1. The tire defect detection device is characterized by comprising a detection table (1), wherein a camera assembly (2) and a cylinder (3) are arranged on the detection table (1), the camera assembly (2) comprises a camera (25) and a light source (26), the upper end face of the cylinder (3) is connected with the lower end face of an outer tooth type turntable bearing (4), the side wall of the outer tooth type turntable bearing (4) is meshed with a driving assembly (5), the upper end face of the outer tooth type turntable bearing is connected with a turntable (6) capable of fixing a tire (9), a vertically telescopic compression roller assembly (8) is arranged above the turntable (6), a compression roller (89) with an adjustable inclination angle is arranged on the compression roller assembly (8), the compression roller (89) can freely rotate around a self rotating shaft, the camera assembly (2), the driving assembly (5) and the compression roller assembly (8) are both connected with a PLC, the PLC controller is connected with the HMI.

2. The tire defect detecting device according to claim 1, wherein the cylinder (3) is hollow, a first fixing seat (31) is provided, the camera assembly (2) is fixed on the first fixing seat (31), a through hole (61) is provided at the center of the rotating disc (6), and the camera assembly (2) can shoot the detection state of the tire (9) through the through hole (61).

3. The tire defect detecting device according to claim 2, wherein the camera assembly (2) comprises a first lead screw (21) vertically arranged inside the cylinder (3), the first lead screw (21) is connected with a first servo motor (22), a first nut seat (23) is arranged on the first lead screw (21), the first nut seat (23) is hinged with a camera rod (24), a hinged shaft hinged with the first nut seat (23) is arranged at the lower end of the camera rod (24), the camera (25) and the light source (26) are arranged at the upper end face of the camera rod (24), and the hinged shaft of the camera rod (24) is connected with a sixth servo motor.

4. A tyre defect detecting device according to claim 3, characterized in that said driving assembly (5) comprises a second servo motor (51) fixed on said detecting table (1), the output end of said second servo motor (51) is connected with a first gear (52), said first gear (52) is engaged with said external toothed turntable bearing (4).

5. A tire defect detecting device according to claim 4, wherein said turn table (6) includes a turn table body (62) provided with said through hole (61) at the center, the upper end surface of the turntable body (62) is provided with a curved surface groove (63) which is matched with the sidewall (92) of the tire (9), the outer circumference is provided with an axially convex edge (64), a plurality of springs (65) are arranged on the circumference of the inner side surface of the edge (64) at equal intervals, one end of each spring (65) is fixed on the inner side surface of the edge (64), the other end of each spring is connected with a locking piece (66), the locking piece (66) comprises a locking part (661), the locking part (661) is provided with an arc-shaped inner curved surface which is adapted to the crown (91) of the tyre (9), the upper end face integrated into one piece of locking portion (661) has guide portion (662), guide portion (662) are equipped with to the lower inclined plane that the arc inner curved surface of locking portion (661) extends.

6. The tire defect detecting device according to claim 5, wherein two clamping assemblies (7) are symmetrically arranged on the detecting table (1), the clamping assemblies (7) comprise a first sliding rail (71) arranged on the detecting table (1), a first sliding block (72) is arranged on the first sliding rail (71), the upper end surface of the first sliding block (72) is connected with a first air cylinder (73), the output end of the first air cylinder (73) is connected with a first lifting seat (74), the upper end surface of the first lifting seat (74) is provided with a first upright post (75), one side of the first upright post (75) facing the turntable (6) is provided with a clamping portion (76), one side of the clamping portion (76) is provided with a rotating shaft (761) connected with the first upright post (75), and the other side is provided with an arc-shaped curved surface corresponding to the crown (91) of the tire (9), a rolling piece (77) is arranged in the arc-shaped curved surface, the rotating axis of the rolling piece (77) is parallel to the rotating axis of the turntable (6), and the rotating shaft (761) is connected with the output end of a third servo motor (762); the other side parallel of first stand (75) is equipped with second stand (78), be equipped with second cylinder (79) on second stand (78), the output of second cylinder (79) is connected first stand (75), first cylinder (73) with PLC controller is all connected to second cylinder (79).

7. The tire defect detecting device of claim 6, wherein the rolling member (77) comprises a roller core (771) and an elastomer surface layer (772) sleeved on the outer peripheral surface of the roller core (771), shoulders are arranged at two ends of the roller core (771), the shoulders of the roller core (771) are covered by two ends of the elastomer surface layer (772), a fixing ring (773) is covered on the end of the elastomer surface layer (772), a screw (774) is sequentially connected and fixed with the fixing ring (773), the end of the elastomer surface layer (772) and the roller core (771), and an annular protrusion (775) coaxial with the roller core (771) is arranged on the outer peripheral surface of the elastomer surface layer (772).

8. The tire defect detecting device according to claim 6, wherein the press roller assembly (8) comprises a fixing frame (81), a second sliding rail (82) and a second screw rod (83) are arranged on the fixing frame (81) in parallel, a second sliding block (821) is arranged on the second sliding rail (82), a nut seat (831) connected with the second sliding block (821) is arranged on the second screw rod (83), an output end of a fourth servo motor (84) is connected with the second screw rod (83), the second sliding block (821) is connected with a second fixing seat (85), the second fixing seat (85) is connected with a third air cylinder (86), an output end of the third air cylinder (86) is connected with a second lifting seat (87), two mounting plates (871) are arranged on the lower end face of the second lifting seat (87) in parallel, a second gear (872) and a third gear (873) which are meshed with each other are arranged between the two mounting plates (871), the rotating shaft of the second gear (872) is connected with a fifth servo motor (874), the third gear (873) is fixedly connected with a pressing roller frame (88), a pressing roller (89) is rotatably connected onto the pressing roller frame (88), and the rotating shaft of the pressing roller (89) is perpendicular to the rotating shaft of the third gear (873).

9. The tire defect detecting device according to claim 8, wherein the upper end surface of the first sliding block (72) is further provided with a first guide rod (721), and the lower end surface of the first lifting seat (74) is provided with a first guide sleeve (741) corresponding to the first guide rod (721); a second guide rod (781) is arranged on the second upright post (78), and a second guide sleeve (751) corresponding to the second guide rod (781) is arranged on the first upright post (75); and a third guide rod (851) is arranged on the second fixed seat (85), and a third guide sleeve (875) corresponding to the third guide rod (851) is arranged on the second lifting seat (87).

10. The use method of the tire defect detecting device according to claim 9, comprising the steps of:

s100, setting operation parameters through the HMI, and controlling detection by the PLC according to the operation parameters;

s200, placing the tire (9) into the turntable (6), pressing down and fixing, extending piston rods of second air cylinders (79) on the two clamping assemblies (7), and enabling the two clamping parts (76) to approach the tire (9) until the rolling member (77) is tightly abutted to the tire crown (91);

s300, adjusting the position of a press roller (89) on the press roller assembly (8) to align the press roller with a to-be-detected position of the tire (9), extending the output end of a third air cylinder (86), and pressing the tire (9) by the press roller (89) to deform the to-be-detected position of the tire (9);

s400, adjusting the positions of a camera (25) and a light source (26) on the camera assembly (2) to enable the camera assembly to shoot the deformation position of the tire (9);

s500, a second servo motor (51) on the driving assembly (5) is started, an outer tooth type turntable bearing (4) meshed with the second servo motor is driven to rotate through a first gear (52), the outer tooth type turntable bearing (4) drives a turntable (6) connected with the outer tooth type turntable bearing to rotate, and a tire (9) fixed on the turntable (6) rotates along with the outer tooth type turntable bearing;

step S600, the HMI receives data information from the camera (25) and analyzes and detects possible defects;

s700, one side of a tire (9) is detected, a PLC controls a camera shooting assembly (2) to be stored in a cylinder (3), a compression roller assembly (8) is reset, a rotary disc (6) stops rotating, a piston rod of a first air cylinder (73) on a clamping assembly (7) extends, the tire (9) is separated from the rotary disc (6) and lifted under the clamping of a clamping part (76), after the tire (9) is lifted to a height capable of being turned, a third servo motor (762) is started to rotate, the clamping part (76) drives the tire (9) to rotate 180 degrees, and the tire (9) is turned;

step S800, after the overturning is finished, repeating the operations from the step S200 to the step S600;

and S900, completing all detection of the tire (9), resetting the second air cylinder (79), enabling the clamping part (76) to be far away from the tire (9), taking down the tire (9) from the turntable (6), and entering the next detection cycle.

Background

The tire mainly comprises a tire tread, a tire shoulder, a tire side and a bead, wherein the tire tread sequentially comprises a tire crown, a tire crown protective layer, a belt ply and a corresponding tire body structure part from outside to inside. The method comprises the steps of preparing corresponding rubber sheets for each part of the tire in advance according to different raw material formulas, then preparing a green tire blank through rubberizing molding, and finally obtaining a finished tire after vulcanizing molding the green tire blank. The finished tire needs to be subjected to quality inspection, so that the defective tire can be prevented from being put on the market, and the production process can be improved and optimized.

The tires may have various defects, such as structural non-uniformity or the presence of foreign objects on the surface. In structural non-uniformity, "shift in the carcass" is particularly critical, a rare but very dangerous defect that is produced in the joining zone between two portions of the tyre having different chemical-physical characteristics. These defects present themselves as very small incisions which, in the natural state of tyre placement, assume a completely closed state, making them difficult to identify. The defect can be continuously torn and expanded along with the rolling and pressing of the tire in the using process, and serious potential safety hazards exist. It is therefore desirable to provide an effective inspection method for timely troubleshooting tires having the above-mentioned drawbacks.

Disclosure of Invention

In order to solve the technical problems, the invention provides a tire defect detection device which comprises a detection table, wherein a camera assembly and a cylinder are arranged on the detection table, the camera assembly comprises a camera and a light source, the upper end surface of the cylinder is connected with the lower end surface of an outer tooth type turntable bearing, the side wall of the outer tooth type turntable bearing is meshed with a driving assembly, the upper end surface of the outer tooth type turntable bearing is connected with a turntable capable of fixing a tire, a compression roller assembly capable of vertically stretching is arranged above the turntable, a compression roller with an adjustable inclination angle is arranged on the compression roller assembly, the compression roller can freely rotate around a rotating shaft of the compression roller assembly, the camera assembly, the driving assembly and the compression roller assembly are all connected with a PLC, and the PLC is connected with an HMI.

Preferably, the cylinder is hollow, and is provided with a first fixing seat, the camera shooting component is fixed on the first fixing seat, a through hole is formed in the center of the turntable, and the camera shooting component can penetrate through the through hole to shoot the detection state of the tire.

Preferably, the camera shooting assembly comprises a first lead screw vertically arranged inside the cylinder, the first lead screw is connected with a first servo motor, a first nut seat is arranged on the first lead screw, the first nut seat is hinged with a camera shooting rod, the lower end of the camera shooting rod is provided with a hinged shaft hinged with the first nut seat, the upper end face of the camera shooting rod is provided with the camera and the light source, and the hinged shaft of the camera shooting rod is connected with a sixth servo motor.

Preferably, the driving assembly comprises a second servo motor fixed on the detection table, an output end of the second servo motor is connected with a first gear, and the first gear is meshed with the outer tooth type turntable bearing.

Preferably, the carousel includes that center department is equipped with the carousel body of through-hole, the up end of carousel body is equipped with the curved surface recess that suits with the side wall of tire, and outer circumference department is equipped with the bellied edge of axial, the medial surface circumference equidistance at edge is equipped with a plurality of springs, spring one end is fixed in the medial surface at edge, retaining member are connected to the other end, the retaining member includes locking portion, locking portion has the arc inner curved surface that suits with the child hat of tire, locking portion's up end integrated into one piece has the guide portion, the guide portion be equipped with to the decline inclined plane that the arc inner curved surface of locking portion extends.

Preferably, the detection table is further symmetrically provided with two clamping assemblies, each clamping assembly comprises a first sliding rail arranged on the detection table, a first sliding block is arranged on each first sliding rail, the upper end face of each first sliding block is connected with a first air cylinder, the output end of each first air cylinder is connected with a first lifting seat, the upper end face of each first lifting seat is provided with a first upright column, one side, facing the turntable, of each first upright column is provided with a clamping portion, one side of each clamping portion is provided with a rotating shaft connected with the corresponding first upright column, the other side of each clamping portion is provided with an arc-shaped curved surface corresponding to the tire crown of the tire, a rolling piece is arranged in each arc-shaped curved surface, the rotating shaft center of each rolling piece is parallel to the rotating shaft center of the turntable, and the rotating shaft is connected with the output end of a third servo motor; the other side parallel of first stand is equipped with the second stand, be equipped with the second cylinder on the second stand, the output of second cylinder is connected first stand, first cylinder with the second cylinder all connects the PLC controller.

Preferably, the rolling member includes that roller core and cover are located the elastomer top layer of roller core outer peripheral face, the both ends of roller core all are provided with the shoulder, two tip covers on elastomer top layer the shoulder of roller core, solid fixed ring cover in on the tip on elastomer top layer, the screw connects gradually fixedly gu fixed ring the tip on elastomer top layer with the roller core, the outer peripheral face on elastomer top layer be equipped with the coaxial annular of roller core is protruding.

Preferably, the compression roller assembly comprises a fixed frame, a second sliding track and a second screw rod are arranged on the fixed frame in parallel, a second sliding block is arranged on the second sliding track, a nut seat connected with the second sliding block is arranged on the second screw rod, the output end of a fourth servo motor is connected with the second screw rod, the second sliding block is connected with a second fixed seat, the second fixed seat is connected with a third air cylinder, the output end of the third air cylinder is connected with a second lifting seat, two mounting plates are arranged on the lower end face of the second lifting seat in parallel, a second gear and a third gear which are meshed with each other are arranged between the two mounting plates, the rotating shaft of the second gear is connected with a fifth servo motor, the third gear is fixedly connected with a compression roller frame, the compression roller frame is rotatably connected with a compression roller, and the rotating shaft of the compression roller is perpendicular to the rotating shaft of the third gear.

Preferably, the upper end surface of the first sliding block is further provided with a first guide rod, and the lower end surface of the first lifting seat is provided with a first guide sleeve corresponding to the first guide rod; a second guide rod is arranged on the second upright post, and a second guide sleeve corresponding to the second guide rod is arranged on the first upright post; and a third guide rod is arranged on the second fixed seat, and a third guide sleeve corresponding to the third guide rod is arranged on the second lifting seat.

The invention provides a use method of a tire defect detection device, which specifically comprises the following steps:

s100, setting operation parameters through the HMI, and controlling detection by the PLC according to the operation parameters;

s200, placing the tire into a turntable, pressing down and fixing, extending piston rods of second cylinders on the two clamping assemblies, and enabling the two clamping parts to approach the tire until the rolling part is tightly abutted to the tire crown;

s300, adjusting the position of a compression roller on the compression roller assembly to enable the compression roller to be aligned to the position to be detected of the tire, extending the output end of a third cylinder, and applying pressure to the tire by the compression roller to enable the position to be detected of the tire to be deformed;

s400, adjusting the positions of a camera and a light source on the camera assembly to enable the camera to shoot the deformation part of the tire;

step S500, a second servo motor on the driving assembly is started, an outer tooth type turntable bearing meshed with the second servo motor is driven to rotate through a first gear, the outer tooth type turntable bearing drives a turntable connected with the outer tooth type turntable bearing to rotate, and a tire fixed on the turntable rotates along with the outer tooth type turntable bearing;

step S600, the HMI receives data information from the camera and analyzes and detects possible defects;

s700, after one side of the tire is detected, the PLC controls the camera shooting assembly to be stored in the cylinder, the compression roller assembly resets, the turntable stops rotating, a piston rod of a first air cylinder on the clamping assembly extends, the tire is separated from the turntable and rises under the clamping of the clamping part, and after the tire rises to a height capable of being turned, a third servo motor starts to rotate, so that the clamping part drives the tire to rotate 180 degrees, and the tire is turned;

step S800, after the overturning is finished, repeating the operations from the step S200 to the step S600;

and S900, completing all detection of the tire, resetting the second air cylinder, keeping the clamping part away from the tire, taking down the tire from the turntable, and entering the next detection cycle.

Compared with the prior art, the invention has the following beneficial technical effects:

1. the invention is provided with the compression roller assembly, the parts with smaller curvature radius, such as the tire side, the tire shoulder or the seam allowance of the tire, are pressed by the compression roller, so that the curvature radius of the parts is increased, and the small cuts in the tight abutting state in the positions are opened, so that the defects are easier to detect and identify, and the detection accuracy is improved;

2. the camera shooting assembly is accommodated in the cylinder on the detection table, so that the structure of the whole detection device is more compact;

3. the turntable is provided with the curved surface groove and the locking piece, so that the tire can be positioned, the axis of the tire is completely overlapped with the axis of the turntable, and the tire can be locked better under the synergistic effect; the locking piece is provided with a guide part, so that the tire can be more easily placed in the curved groove;

4. the clamping assembly can play a role in turning the tire, and can reduce the deformation of the tire crown of the tire when the compression roller presses through clamping of the clamping portion of the locking mechanism and the locking portion of the turntable on the tire crown, so that the detection efficiency and accuracy are improved;

5. the rolling part on the clamping assembly adopts a roller form with an elastomer surface layer, the elastomer surface layer can enable the rolling part to be in flexible contact with the tire crown, the surface condition (such as patterns and the like) of the tire crown can be better adapted, the contact area can be increased, the axial friction force of the tire can be improved, and the tire can be firmly held when the tire is turned over;

6. the compression roller assembly realizes accurate control of displacement and angle of the compression roller through the screw rod, the gear, the cylinder and other structures, guarantees consistency of detection conditions, and improves detection stability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view showing a state in which a pressing roller presses a tire;

FIG. 4 is a partial cross-sectional view of FIG. 1;

FIG. 5 is a schematic view of the tire and turntable of FIG. 1;

FIG. 6 is a schematic structural view of the clamping mechanism of FIG. 1;

FIG. 7 is a schematic view of the rolling elements of FIG. 6;

fig. 8 is a schematic structural view of the press roll assembly of fig. 1.

Description of reference numerals:

1. a detection table 2, a camera shooting component 3, a cylinder 4, an external tooth type turntable bearing 5, a driving component 6, a turntable 7, a clamping component 8, a compression roller component 9 and a tire,

21. a first screw rod 22, a first servo motor 23, a first nut seat 24, a camera shooting rod 25, a camera 26 and a light source,

31. a first fixed seat is arranged on the base body,

51. a second servo motor, 52, a first gear,

61. through holes 62, a turntable body 63, grooves 64, edges 65, springs 66, locking members 661, locking portions 662, guide portions,

71. a first sliding track, 72, a first sliding block, 721, a first guide rod, 73, a first air cylinder, 74, a first lifting seat, 741, a first guide sleeve, 75, a first upright post, 751, a second guide sleeve, 76, a clamping part, 761, a rotating shaft, 762, a third servo motor, 77, a rolling piece, 771, a roller core, 772, an elastomer surface layer, 773, a fixing ring, 774, a screw, 775, an annular bulge, 78, a second upright post, 781, a second guide rod, 79 and a second air cylinder,

81. a fixed frame 82, a second sliding track 821, a second slide block 83, a second screw rod 831, a nut seat 84, a fourth servo motor 85, a second fixed seat 851, a third guide rod 86, a third air cylinder 87, a second lifting seat 871, a mounting plate 872, a second gear 873, a third gear 874, a fifth servo motor 875, a third guide sleeve 88, a compression roller frame 89 and a compression roller,

91. crown, 92, sidewalls, 93, shoulders, 94, bead.

Detailed Description

The following description of the embodiments of the present invention refers to the accompanying drawings and examples:

it should be noted that the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are only for the purpose of understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined by the following claims, and all modifications of the structures, changes in the proportions and adjustments of the sizes and other dimensions which are within the scope of the disclosure should be understood and encompassed by the present disclosure without affecting the efficacy and attainment of the same.

In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Combine accompanying 1-3, this embodiment provides a tire defect detection device, including examining test table 1, it makes a video recording subassembly 2 and cylinder 3 to examine to be equipped with on test table 1, it includes camera 25 and light source 26 to make a video recording subassembly 2, the lower terminal surface of outer tooth formula carousel bearing 4 is connected to the up end of cylinder 3, the lateral wall meshing drive assembly 5 of outer tooth formula carousel bearing 4, carousel 6 that can fix tire 9 is connected to the up end, 6 tops of carousel are equipped with compression roller assembly 8 that can stretch out and draw back perpendicularly, be equipped with inclination adjustable compression roller 89 on compression roller assembly 8, compression roller 89 can be around its self pivot free rotation, make a video recording subassembly 2 drive assembly 5 with compression roller assembly 8 all connects the PLC controller, the HMI is connected to the PLC controller.

In operation, as shown in fig. 3, the tire 9 is horizontally fixed on the turntable 6, and then the angle of the press roller 89 on the press roller assembly 8 is adjusted so that the press roller 89 presses the portion with a small curvature radius, such as the sidewall 92, the shoulder 93, or the bead 94, of the tire 9. The positions with smaller curvature radius have large outward convex radians, and the small notches at the positions are in a tight abutting state, so that the defects are difficult to judge. The pressure roller 89 is used for pressing the part to increase the curvature radius (reduce the convex radian), so that the incision can be effectively opened and can be observed more easily. During detection, the pressing roller 89 is pressed and fixed at the position to be detected, the position of the camera assembly 2 is adjusted, the light source 26 irradiates the position to be detected, and the camera 25 is aimed at the inner surface or the outer surface of the pressed position for shooting, the light source 26 is preferably incoherent white light, the camera assembly 2 can adopt the conventional configuration in the prior art, for example, the length-adjustable rod part and the angle-adjustable camera 25 mounting part are included, and the light source 26 is preferably mounted at the position close to the camera 25. The driving assembly 5 drives the tire 9 on the turntable 6 to rotate, and the pressing roller 89 rolls relatively along with the rotation of the tire 9 to continuously press the tire 9. The HMI acquires and analyzes data information captured by the camera 25, and determines a quality-qualified level. Among the above-mentioned technical scheme, the position of examining test table 1 is not restricted, but the preferred end of placing in tire 9 transfer chain snatchs tire 9 through the manipulator and puts into carousel 6, and the back is accomplished to the detection according to the quality testing result of difference, and the manipulator is put qualified product to packing storage production line, and unqualified product is carried to reinspection and is restoreed the production line. The installation position of the compression roller assembly 8 is not limited, and the compression roller assembly can be installed on the table top of the detection table 1 through a support and also can be hung above the detection table 1.

In a specific embodiment, the camera module 2 is configured as follows, as shown in fig. 4, the cylinder 3 is hollow, the first fixing seat 31 is provided, the camera module 2 is fixed on the first fixing seat 31, a through hole 61 is provided at the center of the turntable 6, and the camera module 2 can shoot the detection state of the tire 9 through the through hole 61.

The camera shooting assembly 2 comprises a first lead screw 21 vertically arranged inside the cylinder 3, the first lead screw 21 is connected with a first servo motor 22, a first nut seat 23 is arranged on the first lead screw 21, the first nut seat 23 is hinged with a camera shooting rod 24, the lower end of the camera shooting rod 24 is provided with a hinged shaft hinged with the first nut seat 23, the upper end face of the camera shooting rod 24 is provided with the camera 25 and the light source 26, and the hinged shaft of the camera shooting rod 24 is connected with a sixth servo motor (not shown in the figure).

In the above technical solution, the camera module 2 is accommodated inside the cylinder 3, so that the structure of the whole detection device is more compact, as mentioned above, the camera rod 24 may be a conventional arrangement in the prior art, for example, the camera rod 24 has a retractable and freely rotatable structure, the camera rod 24 is disposed on the first nut seat 23 of the first lead screw 21, the length of the camera rod 24 can be adjusted by the rotation of the first lead screw 21, so that the camera rod can be accommodated inside the cylinder 3 more conveniently, the hinge shaft of the camera rod 24 is hinged to the first nut seat 23, and the inclination angle of the camera rod 24 can be adjusted by the sixth servo motor, so as to assist in adjusting the position of the camera 25.

In a specific embodiment, the driving assembly 5 is implemented as follows, as shown in fig. 4, the driving assembly 5 includes a second servo motor 51 fixed on the detection table 1, an output end of the second servo motor 51 is connected to a first gear 52, and the first gear 52 is engaged with the external toothed turntable bearing 4.

Among the above-mentioned technical scheme, drive assembly 5 simple structure easily installs. The second servo motor 51 drives the first gear 52 to rotate, and drives the outer gear-type turntable bearing 4 to rotate, thereby rotating the turntable 6 connected to the outer gear-type turntable bearing 4.

In a specific embodiment, the technical solution of the turntable 6 is as follows, as shown in fig. 5, the turntable 6 includes a turntable body 62 having the through hole 61 at a center, a curved groove 63 adapted to a sidewall 92 of the tire 9 is provided on an upper end surface of the turntable body 62, an axially convex edge 64 is provided at an outer circumference, a plurality of springs 65 are provided at equal intervals on a circumference of an inner side surface of the edge 64, one end of each spring 65 is fixed on the inner side surface of the edge 64, the other end of each spring is connected to a locking member 66, the locking member 66 includes a locking portion 661, the locking portion 661 has an arc inner curved surface adapted to a crown 91 of the tire 9, a guiding portion 662 is integrally formed on the upper end surface of the locking portion 661, and the guiding portion 662 is provided with a lower inclined surface extending towards the arc inner curved surface of the locking portion 661.

Among the above-mentioned technical scheme, can place tire 9's side wall 92 part in the curved surface recess 63 on carousel body 62, both can play the effect to tire 9 location, make the axis of tire 9 and the axis of carousel 6 coincide completely, can play the effect of locking in coordination with retaining member 66 again, make tire 9's fixed more firm. The locking piece 66 adopts a structure that the locking part 661 is matched with the spring 65, and has a simple structure and a good locking effect. In the spring 65, in the naturally expanded and contracted state, the diameter of a virtual circle surrounded by the locking portions 661 is smaller than the diameter of the crown 91 of the tire 9, and the diameter of a virtual circle surrounded by the guide portions 662 is larger than the diameter of the crown 91 of the tire 9. The structure can enable the tire 9 to be placed into the curved groove 63 more easily, after the tire 9 is placed, the spring 65 is compressed, and the locking part 661 generates radial thrust to the crown 91 of the tire 9 to fully lock the tire 9 on the turntable 6.

In a specific embodiment, two clamping assemblies 7 are further symmetrically arranged on the inspection table 1, the technical scheme of the clamping assemblies 7 is as follows, as shown in fig. 6, the clamping assemblies 7 include a first sliding rail 71 arranged on the inspection table 1, a first slider 72 is arranged on the first sliding rail 71, an upper end surface of the first slider 72 is connected with a first cylinder 73, an output end of the first cylinder 73 is connected with a first lifting seat 74, an upper end surface of the first lifting seat 74 is provided with a first upright post 75, one side of the first upright post 75 facing the turntable 6 is provided with a clamping portion 76, one side of the clamping portion 76 is provided with a rotating shaft 761 connected with the first upright post 75, the other side of the clamping portion is provided with an arc-shaped curved surface corresponding to the tire crown 91 of the tire 9, a rolling member 77 is arranged in the arc-shaped curved surface, a rotation axis of the rolling member 77 is parallel to a rotation axis of the turntable 6, the rotating shaft 761 is connected to an output end of the third servo motor 762; the other side parallel of first stand 75 is equipped with second stand 78, be equipped with second cylinder 79 on the second stand 78, the output of second cylinder 79 is connected first stand 75, first cylinder 73 with second cylinder 79 all connects the PLC controller.

Among the above-mentioned technical scheme, clamping component 7 can play the effect of carrying out the turn-over to tire 9 on the one hand, and on the other hand, through the centre gripping of clamping part 76 of locking mechanism 7 and the locking part 661 of carousel 6 to child hat 91 position, when can reducing compression roller 89 and press, the deformation that tire 9 child hat 91 department produced improves detection efficiency and accuracy nature. The rolling members 77 are disposed on the inner surface of the clamping portion 76 contacting the tire crown 91, and the rolling members 77 may be any element having a rolling function in the prior art, such as rollers or balls, which can sufficiently reduce the rolling resistance of the clamping portion 76 to the tire 9. Before clamping the tire 9, the two clamping assemblies 7 are located at the initial position, and the diameter of the virtual circle enclosed by the rolling members 77 is larger than the maximum diameter of the tire crown 91 of the tire 9, after the tire 9 is fixed on the turntable 6, the piston rod of the second air cylinder 79 extends, and the two clamping portions 76 approach the tire 9 until the rolling members 77 are tightly abutted to the tire crown 91. When the tire 9 rotates, the rolling member 77 rotates relative to the tire 9. After one side of the tire 9 is detected, the pressure roller assembly 8 is far away from the tire 9, the rotating disc 6 stops rotating, a piston rod of the first air cylinder 73 in the clamping assembly 7 extends, the tire 9 is separated from the rotating disc 6 and lifted under the clamping of the clamping portion 76, after the height of the tire 9 is raised to the height capable of being turned, the third servo motor 762 starts to rotate, the clamping portion 76 drives the tire 9 to rotate 180 degrees, and the turn-over operation of the tire 9 is completed. After the inversion is completed, the piston rod of the first cylinder 73 is reset, the clamping portion 76 carries the tire 9 and is pressed and fixed on the turntable 6 again, and the detection on the other side of the tire 9 is started. When the tire 9 is completely tested, the second cylinder 79 is reset, the clamping portion 76 is away from the tire 9, and the tire 9 is removed from the turntable 6 by a manipulator or other means.

In a specific embodiment, the rolling member 77 is implemented as follows, as shown in fig. 7, the rolling member 77 includes a roll core 771 and an elastic surface layer 772 sleeved on the outer peripheral surface of the roll core 771, shoulders are disposed at both ends of the roll core 771, the shoulders of the roll core 771 are covered by both ends of the elastic surface layer 772, a fixing ring 773 is covered on the end of the elastic surface layer 772, a screw 774 is sequentially connected and fixed with the fixing ring 773, the end of the elastic surface layer 772 and the roll core 771, and an annular protrusion 775 coaxial with the roll core 771 is disposed on the outer peripheral surface of the elastic surface layer 772.

Among the above-mentioned technical scheme, rolling member 77 has adopted the form of the roller that has elastomer skin 772, and elastomer skin 772 can make rolling member 77 and child cap 91 carry out the flexible contact, better adaptation child cap 91's surface condition (for example, decorative pattern etc.), can also increase area of contact and improve its axial frictional force, make it hold tightly more firm when carrying out the turn-over to tire 9. The clasping effect is further enhanced by the provision of annular projection 775 on elastomeric skin 772. The structure of the fixing ring 773 in combination with the screws 774 can improve the bonding stability of the elastomer surface layer 772 and the roll core 771, and prevent the elastomer surface layer 772 from sliding along the circumference of the roll core 771.

In a specific embodiment, the technical solution of the platen roller assembly 8 is as follows, as shown in fig. 8, the platen roller assembly 8 includes a fixed frame 81, a second sliding rail 82 and a second screw rod 83 are arranged on the fixed frame 81 in parallel, a second sliding block 821 is arranged on the second sliding rail 82, a nut seat 831 connected to the second sliding block 821 is arranged on the second screw rod 83, an output end of a fourth servo motor 84 is connected to the second screw rod 83, the second sliding block 821 is connected to a second fixed seat 85, the second fixed seat 85 is connected to a third air cylinder 86, an output end of the third air cylinder 86 is connected to a second lifting seat 87, two mounting plates 871 are arranged in parallel on a lower end surface of the second lifting seat 87, a second gear 872 and a third gear 873 which are engaged with each other are arranged between the two mounting plates 871, a rotating shaft of the second gear 872 is connected to a fifth servo motor 874, the third gear 873 is fixedly connected with a pressing roller frame 88, the pressing roller frame 88 is rotatably connected with a pressing roller 89, and the rotating shaft of the pressing roller 89 is perpendicular to the rotating shaft of the third gear 873.

In the above technical solution, the fourth servo motor 84 drives the second lead screw 83 to rotate, so that the nut seat 831 drives the second slider 821 to move on the second sliding track 82, the moving distance is accurately controlled, and the accurate adjustment of the radial position of the pressing roller 89 relative to the tire 9 is realized. The fifth servo motor 874 drives the second gear 872 to rotate, and the third gear 873 engaged with the second gear 872 drives the pressing roller 89 to rotate, so that the accurate adjustment of the inclination angle of the pressing roller 89 is realized. The third cylinder 86 realizes the pressing operation of the pressing roller 89 on the tire 9 through the extension of the piston rod, and can ensure the consistency of pressure conditions during detection and improve the detection stability by controlling the extension length of the piston rod.

In a specific embodiment, the upper end surface of the first sliding block 72 is further provided with a first guide rod 721, and the lower end surface of the first lifting seat 74 is provided with a first guide sleeve 741 corresponding to the first guide rod 721; a second guide rod 781 is arranged on the second upright post 78, and a second guide sleeve 751 corresponding to the second guide rod 781 is arranged on the first upright post 75; a third guide rod 851 is arranged on the second fixing seat 85, and a third guide sleeve 875 corresponding to the third guide rod 851 is arranged on the second lifting seat 87.

Among the above-mentioned technical scheme, guide arm guide pin bushing structure can make the lifting operation at each position more steady, accuracy and security when improving the operation.

The embodiment provides a use method of a tire defect detection device, which specifically comprises the following steps:

s100, setting operation parameters through the HMI, and controlling detection by the PLC according to the operation parameters;

step S200, placing the tire 9 into the turntable 6, pressing down and fixing, extending piston rods of second air cylinders 79 on the two clamping assemblies 7, and enabling the two clamping parts 76 to approach the tire 9 until the rolling members 77 are tightly abutted to the tire crown 91;

step S300, adjusting the position of a press roller 89 on the press roller assembly 8 to enable the press roller to be aligned with the position to be detected of the tire 9, extending the output end of a third air cylinder 86, and applying pressure to the tire 9 by the press roller 89 to enable the position to be detected of the tire 9 to be deformed;

step S400, adjusting the positions of the camera 25 and the light source 26 on the camera assembly 2 to enable the camera assembly to shoot the deformation position of the tire 9;

step S500, a second servo motor 51 on the driving assembly 5 is started, the first gear 52 drives the outer tooth type turntable bearing 4 meshed with the second servo motor to rotate, the outer tooth type turntable bearing 4 drives the turntable 6 connected with the outer tooth type turntable bearing 4 to rotate, and the tire 9 fixed on the turntable 6 rotates along with the outer tooth type turntable bearing;

step S600, the HMI receives data information from the camera 25 and analyzes and detects possible defects;

step S700, after one side of the tire 9 is detected, the PLC controls the camera shooting assembly 2 to be stored in the cylinder 3, the compression roller assembly 8 is reset, the rotary table 6 stops rotating, a piston rod of a first air cylinder 73 on the clamping assembly 7 extends, the tire 9 is separated from the rotary table 6 and lifted under the clamping of the clamping part 76, and after the tire 9 is lifted to the height capable of being turned, the third servo motor 762 is started to rotate, so that the clamping part 76 drives the tire 9 to rotate 180 degrees, and the tire 9 is turned;

step S800, after the overturning is finished, repeating the operations from the step S200 to the step S600;

step S900, the tire 9 is completely detected, the second air cylinder 79 is reset, the holding portion 76 is away from the tire 9, and the tire 9 is removed from the turntable 6 and enters the next detection cycle.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.