1. The utility model provides a cable covering defect autonomous detection equipment with bradyseism function for detect cable, its characterized in that: the device comprises a defect detection device, a cable transmission device, a flaw detector (10) and an industrial personal computer (9); the defect detection device and the flaw detector (10) are respectively in signal connection with the industrial personal computer (9);

the defect detection device comprises a first camera array group and a second camera array group which are sequentially arranged; the flaw detector (10) is arranged at the rear side of the second camera array group;

the cable conveying device comprises a guide wheel frame group and at least two groups of buffering conveying devices, the guide wheel frame group is arranged in front of the first camera array group, one group of buffering conveying devices is arranged between the first camera array group and the second camera array group, and one group of buffering conveying devices is arranged on the rear side of the flaw detector (10);

the cable (8) to be tested is conveyed and guided into the first camera array group by the guide wheel frame group, is conveyed to the second camera array group and the flaw detector (10) by the cushioning conveying device for detection, and is conveyed and guided out by the other cushioning conveying device.

2. The apparatus for autonomously detecting a defect in a cladding of a cable having a cushioning function as claimed in claim 1, wherein: the first camera array group comprises a first industrial camera (2-1) and a second industrial camera (2-2), wherein the lenses of the first industrial camera (2-1) and the second industrial camera (2-2) face to the opposite direction and simultaneously point to a cable (8) to be tested;

the second camera array group comprises a third industrial camera (4-1) and a fourth industrial camera (4-2), wherein the lens of the third industrial camera (4-1) is opposite to the lens of the fourth industrial camera (4-2) in the direction, and the third industrial camera and the fourth industrial camera are simultaneously pointed to the cable (8) to be measured;

the connecting line of the first industrial camera (2-1) and the second industrial camera (2-2) is perpendicular to the connecting line of the third industrial camera (4-1) and the fourth industrial camera (4-2).

3. The apparatus for autonomously detecting a defect in a cladding of a cable having a cushioning function as claimed in claim 2, wherein: the first camera array group further comprises a first light source (2-3), and the first light source (2-3) comprises four independent light source modules which are respectively arranged at the upper side and the lower side of the first industrial camera (2-1) and the second industrial camera (2-2).

4. The apparatus for autonomously detecting a defect in a cladding of a cable having a cushioning function as claimed in claim 2, wherein: the second camera array group comprises a second light source (4-3), and the second light source (4-3) comprises four independent light source modules which are respectively arranged at the left side and the right side of a third industrial camera (4-1) and a fourth industrial camera (4-2).

5. The apparatus for autonomously detecting a defect in a cladding of a cable having a cushioning function as claimed in claim 1, wherein: bradyseism conveyer belt A-frame (3-1) and conveying subassembly include bradyseism conveyer belt A-frame (3-1), bradyseism conveyer belt A-frame (3-1) radial cross-section be triangle-shaped, conveying subassembly quantity corresponds the setting on triangle-shaped edge for three respectively, wherein await measuring cable (8) axial runs through the setting in bradyseism conveyer belt A-frame (3-1), three groups of conveying subassemblies extrude the cable from triangle-shaped's trilateral direction respectively.

6. The apparatus for autonomously detecting a defect in a cladding of a cable having a cushioning function as set forth in claim 5, wherein: the conveying assembly comprises a conveying wheel set and a conveying belt arranged on the conveying wheel set, and three conveying wheels are arranged in the conveying wheel set; the conveying wheels of each group of conveying wheel sets are correspondingly and rotatably connected to the brackets on the corresponding side surfaces of the shock absorption conveying belt triangular brackets (3-1), and motors for driving the conveying wheels of each group of conveying wheel sets to synchronously drive are further arranged in the brackets.

7. The apparatus for autonomously detecting a defect in a cladding of a cable having a cushioning function as set forth in claim 6, wherein: the radial section of the three-corner bracket (3-1) of the cushioning conveying belt is an equilateral triangle, the central axis of the cable (8) to be tested is overlapped with the central axis of the three-corner bracket (3-1) of the cushioning conveying belt, and the conveying belts of the three groups of conveying assemblies form an included angle of 120 degrees.

8. The apparatus for autonomously detecting a defect in a cladding of a cable having a cushioning function as claimed in claim 7, wherein: the shock absorption conveyor belt triangular support (3-1) consists of three-surface herringbone prisms, wherein two vertical prisms in each surface of the herringbone prism are overlapped with vertical prisms of the adjacent side herringbone prisms; the conveying wheels of each group of conveying assemblies are respectively and rotatably connected to the transverse prisms of the reversed-Y-shaped prisms on the corresponding sides.

9. The apparatus for autonomously detecting a defect in a cladding of a cable having a cushioning function as claimed in claim 1, wherein: the flaw detector (10) comprises a first flaw detection probe (5-1) and a second flaw detection probe (5-2), the flaw detection directions of the first flaw detection probe (5-1) and the second flaw detection probe (5-2) are opposite and all point to a cable (8) to be detected, and the first flaw detection probe (5-1) and the second flaw detection probe (5-2) are respectively connected with an industrial personal computer (9) through signals.

10. The apparatus for autonomously detecting a defect in a cladding of a cable having a cushioning function as claimed in claim 1, wherein: the guide wheel frame group comprises a guide wheel support (1) and guide wheels (1-1), the guide wheels (1-1) are rotatably connected to the guide wheel support (1), and the height of the guide wheels (1-1) is consistent with that of a cable (8) to be tested.

Background

China is a large country in manufacturing industry, and the demand of the manufacturing industry for cables is large. As a common industrial product, the quality of the cable has a great influence on economic benefits. In order to ensure the working performance of the metal conductor in the production process of the cable, a smooth and undamaged rubber cladding is generally covered outside the conductor to isolate the inner conductor. However, in the production process, the transportation process and the packaging process of the cable, the inner layer and the outer layer of the cladding are inevitably damaged, the inner conductor is influenced, and economic loss is caused.

Because the cable is long and the cladding has the circularity, no effective cladding defect detection method exists at present. The conventional inspection method is to first photograph the cable surface by a camera and then to determine the defect location and defect type by an inspector examining the photographed picture. The detection mode is highly dependent on the inspector, so that defect omission and defect judgment errors are easy to occur in actual operation, and the working efficiency is low.

The CN107703148A discloses a cable strand quality detection system and a detection method thereof based on machine vision, and discloses a cable strand quality detection system and a detection method thereof based on machine vision, which comprises an image acquisition module, an image processing and identification module and a marking and positioning module, wherein the signal receiving end of the image processing and identification module is connected with the image acquisition module, the control end is connected with the marking and positioning module, the image processing and identification module is used for processing, identifying and detecting the size of the acquired image, the image acquisition module is used for acquiring the cable strand image on line, and the marking and positioning module is used for positioning and marking the unqualified cable strands.

By adopting the mode, the cable cladding defects can be relatively accurately detected, but in the detection process, the defect of the edge of the cable to be detected or the fusion of the edge of the cable and a complex background still exists, so that the defect detection is invalid. Meanwhile, the cable is easy to shake in detection, and the accuracy of detecting the defects on the inner side and the outer side of the cable is influenced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the invention provides the cable cladding defect autonomous detection equipment with the cushioning function, which can accurately probe the cable cladding defect through a visual imaging means, simultaneously lighten the shaking condition of the cable when the cable passes through the detection equipment and effectively improve the detection precision.

The technical scheme adopted by the invention for solving the technical problems is as follows: a cable cladding defect autonomous detection device with a cushioning function is used for detecting a cable and comprises a defect detection device, a cable transmission device, a flaw detector and an industrial personal computer; the defect detection device and the flaw detector are respectively in signal connection with the industrial personal computer; the defect detection device comprises a first camera array group and a second camera array group which are sequentially arranged; the flaw detector is arranged on the rear side of the second camera array group; the cable conveying device comprises a guide wheel frame group and at least two groups of buffering conveying devices, the guide wheel frame group is arranged in front of the first camera array group, one group of buffering conveying devices is arranged between the first camera array group and the second camera array group, and one group of buffering conveying devices is arranged on the rear side of the flaw detector; the cable to be tested is conveyed and guided into the first camera array group by the guide wheel frame group, is conveyed to the second camera array group and the flaw detector by the cushioning conveying device, and is conveyed and guided out by the other cushioning conveying device.

In the above scheme, cable conveyer will await measuring the cable transport and pass through defect detecting device and flaw detector, can effectively guarantee the stability of cable in the motion process through the bradyseism conveyer in the cable conveyer, and the defect detecting device and the flaw detector of being convenient for can steadily detect, have improved the precision that detects.

In order to further image the surface defects of the cables from multiple visual angles, the first camera array group comprises a first industrial camera and a second industrial camera, wherein the lenses of the first industrial camera and the second industrial camera face opposite directions and simultaneously point to the cables to be tested; the second camera array group comprises a third industrial camera and a fourth industrial camera, wherein the lens of the third industrial camera is opposite to the lens of the fourth industrial camera in the direction, and the third industrial camera and the fourth industrial camera point to the cable to be tested at the same time; and the connecting line of the first industrial camera and the second industrial camera is vertical to the connecting line of the third industrial camera and the fourth industrial camera.

Preferably, in order to make the imaging of the first camera array group more clear and reliable and avoid the edge defect of the cable to be detected or the fusion of the cable edge and the complex background, the first camera array group further comprises a first light source, wherein the first light source comprises four independent light source modules which are respectively arranged at the upper side and the lower side of the first industrial camera and the second industrial camera.

Preferably, in order to make the imaging of the first camera array group more clear and reliable and avoid the edge defect of the cable to be detected or the fusion of the cable edge and the complex background, the second camera array group comprises a second light source, and the second light source comprises four independent light source modules which are respectively arranged at the left side and the right side of the third industrial camera and the fourth industrial camera.

Further, bradyseism conveyer include bradyseism conveyer belt A-frame and conveying subassembly, the radial cross-section of bradyseism conveyer belt A-frame be triangle-shaped, conveying subassembly quantity corresponds the setting on triangle-shaped edge for the three respectively, wherein the cable shaft that awaits measuring runs through the setting in bradyseism conveyer belt A-frame, three conveying subassemblies of group are respectively from triangle-shaped trilateral direction extrusion cable. The cable is extruded and conveyed in three directions, so that the cable can be straightened relatively, the surface can be determined at three points, the cable is more stable in conveying, and shaking is not easy to occur.

Preferably, the conveying assembly comprises a conveying wheel set and a conveying belt arranged on the conveying wheel set, and three conveying wheels are arranged in the conveying wheel set; the conveying wheels of each group of conveying wheel sets are correspondingly and rotatably connected to the brackets on the corresponding side faces of the triangular brackets of the cushioning conveying belts, and the brackets are internally provided with motors for driving the conveying wheels of each group of conveying wheel sets to synchronously drive.

Preferably, the radial cross section of the triangular support of the cushioning conveying belt is an equilateral triangle, the central axis of the cable to be tested is overlapped with the central axis of the triangular support of the cushioning conveying belt, and the conveying belts of the three groups of conveying assemblies form an included angle of 120 degrees with each other.

Preferably, the triangular support of the cushioning conveyor belt consists of three-sided rectangular prisms, wherein two vertical prisms in each sided rectangular prism are overlapped with vertical prisms of the adjacent sided rectangular prisms; the conveying wheels of each group of conveying assemblies are respectively and rotatably connected to the transverse prisms of the reversed-Y-shaped prisms on the corresponding sides.

Preferably, the flaw detector comprises a first flaw detection probe and a second flaw detection probe, the flaw detection directions of the first flaw detection probe and the second flaw detection probe are opposite and point to the cable to be detected, and the first flaw detection probe and the second flaw detection probe are respectively connected with signals of an industrial personal computer.

Preferably, in order to facilitate the cable to be tested to be taken down from the winder and correspondingly conveyed into the defect detection device, the guide wheel frame set comprises a guide wheel bracket and a guide wheel, the guide wheel is rotatably connected to the guide wheel bracket, and the height of the guide wheel is consistent with that of the cable to be tested.

The cable cladding defect autonomous detection equipment with the cushioning function has the advantages that:

(1) the detection speed is high, the inner surface and the outer surface of the cable can be rapidly scanned through visual detection and ray detection, and the defect position and the defect type can be determined;

(2) the detection efficiency is high, the scanning integrity of the inner surface and the outer surface of the cable cladding layer can be ensured by four industrial cameras with different angles and two flaw detector probes with different angles, any defect on the surface of the cable can be ensured to be scanned, and the detection efficiency is improved;

(3) the conveying is stable, the stability of the cable to be detected in the conveying process can be ensured through a cushioning conveying device consisting of a cushioning conveying belt triangular support, a conveying wheel set and a conveying belt, and the detection precision loss caused by the shaking of the cable to be detected is avoided;

(4) the detection cost is low, the detection speed of the cable defects can be greatly improved by a production line type detection mode, manual operation is reduced, the production efficiency of an enterprise is improved, and meanwhile the cost of the enterprise is reduced.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of the preferred embodiment of the present invention.

FIG. 2 is a perspective view of a flaw detection device, flaw detector, and idler frame assembly in accordance with a preferred embodiment of the present invention.

Fig. 3 is a top view of fig. 2.

FIG. 4 is a perspective view of the shock absorbing conveyor in the preferred embodiment of the present invention.

Fig. 5 is a control structure diagram of the preferred embodiment of the present invention.

Fig. 6 is a control flow diagram of the preferred embodiment of the present invention.

In the figure, 1, a guide wheel bracket 1-1, a guide wheel 2, a first camera array bracket 2-1, a first industrial camera 2-2, a second industrial camera 2-3, a first light source 3, a first cushioning transmission device 3-1, a cushioning transmission belt triangular bracket 3-2, a first transmission belt 3-3, a second transmission belt 3-4, a third transmission belt 3-5, a first transmission wheel group 3-6, a second transmission wheel group 3-7, a third transmission wheel group 4, a second camera array bracket 4-1, a third industrial camera 4-2, a fourth industrial camera 4-3, a second light source 5, a flaw detection bracket 5-1, a first flaw detection probe 5-2, a second flaw detection probe 6, a second cushioning transmission device 7, The device comprises a detection base 8, a cable to be detected 9, an industrial personal computer 10 and a flaw detector.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

The autonomous detection equipment for the defects of the cable cladding with the shock absorption function, as shown in fig. 1 to 4, is a preferred embodiment of the invention, and comprises a detection base 7, a defect detection device, a cable transmission device, a flaw detector 10 and an industrial personal computer 9.

The detection base 7 is fixed with a guide wheel bracket 1, a first camera array bracket 2, a second camera array bracket 4 and a flaw detection bracket 5.

The guide wheel support 1 is provided with a guide wheel 1-1, and the height of the guide wheel 1-1 is consistent with that of the cable 8 to be tested. The cable 8 to be detected is taken down from the winder, and the direction of the cable is changed by the guide wheel 1-1 to enter the defect detection device for detection.

The first camera array support 2 is provided with a first industrial camera 2-1, a second industrial camera 2-2 and a first light source 2-3, the shooting directions of the first industrial camera 2-1 and the second industrial camera 2-2 are horizontal directions, namely the first industrial camera 2-1 and the second industrial camera 2-2 are responsible for detecting defects of the cable 8 to be detected in the horizontal direction. The first industrial camera 2-1 and the second industrial camera 2-2 are installed in opposite directions to shoot and scan the outer surface of the cable 8 to be measured. The first light source 2-3 is divided into four independent light source modules which are respectively arranged at the upper side and the lower side of the first industrial camera 2-1 and the second industrial camera 2-2. The first light source 2-3 illuminates the whole outer surface of the cable 8 to be measured through four angles, and shooting brightness averaging are guaranteed. Meanwhile, the position of the first light source 2-3 is located in the opposite direction of the shooting angles of the first industrial camera 2-1 and the second industrial camera 2-2, and the first light source can be used as a background white board to prevent the defect detection failure caused by the fusion of the edge defect and the complex background of the cable 8 to be detected.

The second camera array support 4 is provided with a third industrial camera 4-1, a fourth industrial camera 4-2 and a second light source 4-3, the shooting direction of the third industrial camera 4-1 and the shooting direction of the fourth industrial camera 4-2 are vertical, namely the third industrial camera 4-1 and the fourth industrial camera 4-2 are responsible for detecting defects of the cable 8 to be detected in the vertical direction. The third industrial camera 4-1 and the fourth industrial camera 4-2 are installed in opposite directions to shoot and scan the outer surface of the cable 8 to be measured. The second light source 4-3 is divided into four independent light source modules which are respectively arranged at the left side and the right side of the third industrial camera 4-1 and the fourth industrial camera 4-2. The second light source 4-3 illuminates the whole outer surface of the cable 8 to be measured through four angles, and shooting brightness averaging are guaranteed. Meanwhile, the position of the second light source 4-3 is opposite to the shooting angles of the third industrial camera 4-1 and the fourth industrial camera 4-2, and the second light source can be used as a background white board to prevent the defect detection failure caused by the edge defect and the complex background fusion of the cable 8 to be detected.

The first industrial camera 2-1, the second industrial camera 2-2, the third industrial camera 4-1 and the fourth industrial camera 4-2 respectively carry out external defect detection on the cable 8 to be detected from four angles in pairs, the high-density detection range can reduce the malformation degree of a shot image, and the scanning precision and the defect detection precision are improved.

The flaw detector 10 comprises a flaw detection support 5, and a first flaw detection probe 5-1 and a second flaw detection probe 5-2 which are arranged on the flaw detection support 5. The first flaw detection probe 5-1 and the second flaw detection probe 5-2 are oppositely arranged to detect internal defects of cladding layers on two sides of the cable 8 to be detected. The first flaw detection probe 5-1 and the second flaw detection probe 5-2 are connected with the flaw detector 10, and obtained flaw detection signals are transmitted to the flaw detector 10 in real time for checking.

Each cushioning conveying device comprises a cushioning conveying belt triangular support 3-1, a first conveying belt 3-2, a second conveying belt 3-3, a third conveying belt 3-4, a first conveying wheel set 3-5, a second conveying wheel set 3-6 and a third conveying wheel set 3-7. The shock absorption conveyor belt triangular support 3-1 consists of three-surface B-shaped prisms, wherein two vertical prisms in each surface B-shaped prism are overlapped with vertical prisms of adjacent side B-shaped prisms; the conveying wheels of each group of conveying assemblies are respectively and rotatably connected to the transverse prisms of the reversed-Y-shaped prisms on the corresponding sides.

And each group of conveying wheel sets drives the conveying wheels by a motor arranged in the shock absorption conveying belt triangular support 3-1 so as to drive the first conveying belt 3-2, the second conveying belt 3-3 and the third conveying belt 3-4 to rotate. The conveying belt is made of a high-elasticity and high-friction elastic belt, and the cross section of the elastic belt can be preferably in a circular arc shape, so that the conveying belt is ensured to be in full contact with the conveying wheel and the cable 8 to be tested. The three conveyor belts mutually form an angle of 120 degrees to tightly extrude the cable 8 to be tested into the middle conveying gap, and the motor drives the conveyor belts to transmit so as to drive the cable to transversely move.

The outer surface of the cable 8 to be detected is tightly extruded by the conveying belts, and one surface can be determined by three points, so that the directional stable movement of the cable 8 to be detected can be effectively and stably maintained in the process of conveying the cable 8 to be detected through the cooperation of the three conveying belts, the shaking of the cable 8 to be detected in the transmission process is effectively reduced, and the precision of detecting the defects on the inner side and the outer side is facilitated. Meanwhile, the inner side and the outer side of the covering layer of the cable 8 to be detected can be straightened, and a certain straightening effect is achieved.

The industrial personal computer 9 is connected with the first industrial camera 2-1, the second industrial camera 2-2, the third industrial camera 4-1, the fourth industrial camera 4-2 and the flaw detector 10, the industrial cameras and the flaw detector 10 transmit transmitted digital information to the industrial personal computer 9 in real time, the industrial personal computer 9 processes and analyzes signals in real time, and the industrial personal computer 9 sorts and stores processed data of defects on the inner side and the outer side of a cladding of the cable 8 to be detected and sends out warning. After the industrial camera finishes shooting the cable 8 to be detected, the obtained digital image is transmitted to an industrial personal computer 9 connected with the industrial personal computer in real time, the industrial personal computer 9 performs image processing and defect detection on the obtained image, and the defect image is sorted and stored in a database; after the flaw detection probe detects flaws of the cable 8 to be detected, the obtained digital signals are transmitted to a flaw detector 10 connected with the flaw detection probe in real time, the industrial personal computer 9 reads signals on the flaw detector 10 to obtain specific information of internal flaws, and the flaw information is sorted and stored in a database.

When the autonomous detection equipment starts to work, a worker only needs to wind one side of a detected cable around the guide wheel 1-1 and then sequentially passes through the first camera array bracket 2, the first cushioning transmission device 3, the second camera array bracket 4, the flaw detector 10, the probe bracket and the second cushioning transmission device 6; then, an industrial personal computer 9, a first light source 2-3, a second light source 4-3, a first industrial camera 2-1, a second industrial camera 2-2, a third industrial camera 4-1, a fourth industrial camera 4-2 and a flaw detector 10 are turned on, angles are adjusted to ensure that the cameras can shoot clear and continuous cable surface images, and a probe of the flaw detector 10 can scan complete and continuous internal information; then manually adjusting the tested cable to straighten the cable on the station, especially straightening the cable in the cushioning conveying device; and finally, a motor of the cushioning conveying device is started to drive the first conveying belt 3-2, the second conveying belt 3-3 and the third conveying belt 3-4 to rotate, and the defects of the inner surface and the outer surface of the cable are detected. In the working process of the equipment, the fastest detection speed of the cable is 1.5 m/s, and the average error detection rate is less than 7%. The equipment can replace the original mode of detecting the cable defects, detect and record the defects of the inner side and the outer side of a cable covering layer at high speed and stably by using the modes of image processing and automatic transmission, greatly save the cost of human resources, realize the automation of cable detection and improve the economic benefit of enterprises.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.