1. A pallet conveying apparatus, comprising:

the conveying and positioning mechanism (1) comprises a mounting seat (11), a conveying assembly (12) and a positioning assembly (13), wherein the conveying assembly (12) and the positioning assembly (13) are arranged on the mounting seat (11), and the positioning assembly (13) is abutted against the side edge of the material tray along the conveying direction perpendicular to the material tray;

retrieve transport mechanism (2), with transmission positioning mechanism (1) butt joint, retrieve transport mechanism (2) including base (21), snatch subassembly (25) and transfer module (26), snatch subassembly (25) with transfer module (26) are all located on base (21), snatch subassembly (25) can with the charging tray snatch place in on transfer module (26).

2. Tray transport device according to claim 1, characterized in that the transport assembly (12) comprises:

the transmission motor (121) is arranged on the mounting seat (11);

the transmission shaft (122) is in transmission connection with the transmission motor (121), the transmission shaft (122) is perpendicular to the conveying direction of the material tray, two ends of the transmission shaft (122) are in transmission connection with a driving belt pulley (124) respectively, and a driven belt pulley (125) is arranged on the same side of each driving belt pulley (124);

the transmission band (123), be equipped with two, every transmission band (123) all overlap and are located the homonymy drive pulley (124) with on driven pulley (125), the charging tray is in transmission on transmission band (123).

3. The tray conveying device according to claim 1, wherein the positioning assembly (13) comprises a datum positioning assembly (131) and a flexible positioning assembly (132), and the datum positioning assembly (131) and the flexible positioning assembly (132) are respectively arranged on two sides of the tray in a direction perpendicular to the conveying direction of the tray.

4. The tray transport apparatus according to claim 3, wherein the datum positioning assembly (131) comprises:

a reference positioning cylinder (1311) arranged on the mounting base (11);

the connecting base (1312) is connected with the output end of the reference positioning cylinder (1311), a plurality of reference positioning blocks are arranged on the connecting base (1312), and the reference positioning blocks are abutted to the first side of the tray;

and the reference positioning guide rail (1313) is arranged on the mounting seat (11), and the connecting seat (1312) is arranged on the reference positioning guide rail (1313) in a sliding mode.

5. The tray transport apparatus of claim 3, wherein the flexible positioning assembly (132) comprises:

the flexible positioning air cylinder (1321) is arranged on the mounting seat (11);

the fixed seat (1322) is connected with the output end of the reference positioning cylinder (1311), a plurality of flexible positioning blocks are arranged on the fixed seat (1322), the flexible positioning blocks are abutted against the second side of the tray, and the second side is opposite to the first side;

and the flexible positioning guide rail (1323) is arranged on the mounting seat (11), and the fixed seat (1322) is arranged on the flexible positioning guide rail (1323) in a sliding manner.

6. Tray transport apparatus according to any of claims 1-5, characterized in that the recovery transport mechanism (2) further comprises:

an adjusting motor (22) arranged on the base (21);

the lead screw (23), the lead screw (23) is in transmission connection with the adjusting motor (22), the grabbing assembly (25) is in threaded connection with the lead screw (23), and the lead screw (23) is arranged along the height direction of the base (21);

the sliding rail (24), the sliding rail (24) is arranged on the base (21), and the grabbing component (25) is arranged on the sliding rail (24) in a sliding mode.

7. Tray transport device according to claim 6, characterized in that the gripper assembly (25) comprises:

the base (251) is in threaded connection with the lead screw (23), and the base (251) is connected to the sliding rail (24) in a sliding mode;

a grabbing cylinder (252) arranged on the base (251);

and the vacuum chuck (253) is connected with the output end of the grabbing cylinder (252), and the vacuum chuck (253) is used for adsorbing and fixing the material plate.

8. Tray transport device according to claim 7, characterized in that the gripper assembly (25) further comprises telescopic guides (254), the telescopic guides (254) being connected to both the base (251) and the vacuum chuck (253).

9. Tray transport device according to claim 7, characterized in that the transfer assembly (26) comprises:

the speed regulating motor (261) is arranged on the base (21);

the conveying shaft (262) is in transmission connection with the speed regulating motor (261), the conveying shaft (262) is perpendicular to the conveying direction of the material tray, driving wheels (264) are arranged at two ends of the conveying shaft (262), a driven wheel (265) is arranged on the same side of each driving wheel (264), and the driving wheels (264) and the driven wheels (265) are rotatably arranged on the base (21);

conveyer belt (263), be equipped with two, every conveyer belt (263) all overlap and are located the homonymy on action wheel (264) with from driving wheel (265), conveyer belt (263) be used for with on vacuum chuck (253) the charging tray output.

10. The tray conveying device according to claim 9, wherein the conveying assembly (26) further comprises a second position sensor, and the second position sensor is arranged on the base (21) and used for detecting the position of the tray so as to control the on/off of the speed regulating motor (261).

Background

The charging tray is used for holding the material, and when the material need take out, need take out the charging tray layer by layer, retrieve the charging tray through conveyor after the material takes out. In current charging tray conveyor, only realize the transmission of charging tray through motor and lead screw cooperation, but this charging tray conveyor can't fix a position the charging tray, leads to the charging tray unstable in transmission process.

Accordingly, there is a need for a tray conveying device to solve the above problems.

Disclosure of Invention

The invention aims to provide a tray conveying device which is high in conveying efficiency and good in stability.

In order to achieve the purpose, the invention adopts the following technical scheme:

a tray conveying apparatus, comprising:

the conveying positioning mechanism comprises a mounting seat, a conveying assembly and a positioning assembly, wherein the conveying assembly and the positioning assembly are arranged on the mounting seat, and the positioning assembly is abutted against the side edge of the material tray along the conveying direction perpendicular to the material tray;

the recovery conveying mechanism is in butt joint with the transmission positioning mechanism and comprises a base, a grabbing component and a conveying component, the grabbing component and the conveying component are arranged on the base, and the grabbing component can grab and place the charging tray on the conveying component.

As a preferable technical solution of the tray conveying device, the conveying assembly includes:

the transmission motor is arranged on the mounting seat;

the transmission shaft is in transmission connection with the transmission motor, is perpendicular to the conveying direction of the material tray, is in transmission connection with a driving belt wheel at two ends respectively, and is provided with a driven belt wheel at the same side of each driving belt wheel;

the transmission band is equipped with two, every the homonymy is all located to the transmission band the driving pulley with from the driven pulleys is last, the charging tray is in the transmission is gone up to the transmission band and is transmitted.

As an optimal technical scheme of the material tray conveying device, the positioning assembly comprises a reference positioning assembly and a flexible positioning assembly, and the reference positioning assembly and the flexible positioning assembly are respectively arranged on two sides of the material tray along the direction perpendicular to the conveying direction of the material tray.

As a preferable technical solution of the tray conveying device, the reference positioning assembly includes:

the datum positioning cylinder is arranged on the mounting seat;

the connecting seat is connected with the output end of the reference positioning cylinder, a plurality of reference positioning blocks are arranged on the connecting seat, and the plurality of reference positioning blocks are abutted to the first side of the material tray;

and the reference positioning guide rail is arranged on the mounting seat, and the connecting seat is slidably arranged on the reference positioning guide rail.

As a preferable technical solution of the tray conveying device, the flexible positioning assembly includes:

the flexible positioning cylinder is arranged on the mounting seat;

the fixed seat is connected with the output end of the reference positioning cylinder, a plurality of flexible positioning blocks are arranged on the fixed seat, the flexible positioning blocks are abutted against the second side of the material tray, and the second side is opposite to the first side;

the flexible positioning guide rail is arranged on the mounting seat, and the fixing seat is slidably arranged on the flexible positioning guide rail.

As a preferable technical solution of the tray conveying device, the recovery conveying mechanism further includes:

the adjusting motor is arranged on the base;

the lead screw is in transmission connection with the adjusting motor, the grabbing assembly is in threaded connection with the lead screw, and the lead screw is arranged along the height direction of the base;

the slide rail set up in on the base, it sets up to snatch the subassembly slidable on the slide rail.

As a preferable technical solution of the tray conveying device, the gripping assembly includes:

the base is in threaded connection with the lead screw and can be connected to the sliding rail in a sliding manner;

the grabbing cylinder is arranged on the base;

and the vacuum chuck is connected with the output end of the grabbing cylinder and is used for adsorbing and fixing the material tray.

As an optimal technical scheme of the material tray conveying device, the grabbing assembly further comprises a telescopic guide rod, and the telescopic guide rod is connected with the base and the vacuum chuck.

As a preferable technical solution of the tray conveying device, the conveying assembly includes:

the speed regulating motor is arranged on the base;

the conveying shaft is in transmission connection with the speed regulating motor, the conveying shaft is perpendicular to the conveying direction of the material tray, driving wheels are arranged at two ends of the conveying shaft, a driven wheel is arranged on the same side of each driving wheel, and the driving wheels and the driven wheels are rotatably arranged on the base;

the conveyer belt is equipped with two, every the conveyer belt all overlaps and locates the homonymy the action wheel with from the driving wheel on, the conveyer belt be used for with on the vacuum chuck the charging tray output.

As an optimal technical scheme of the material tray conveying device, the conveying assembly further comprises a second position sensor, and the second position sensor is arranged on the base and used for detecting the position of the material tray so as to control the opening and closing of the speed regulating motor.

The invention has the beneficial effects that:

1. the automatic conveying of the material tray is realized by arranging the conveying assembly and the conveying assembly, so that the conveying efficiency is improved;

2. the positioning assembly is arranged, and is abutted against the side edge of the material tray along the direction perpendicular to the conveying direction of the material tray to position the material tray, so that the conveying stability of the material tray is improved;

3. the setting snatchs the subassembly and snatchs the charging tray automatically, accomplishes the butt joint of charging tray between transmission positioning mechanism and recovery transport mechanism, reduces artifical the participation, has further improved transmission efficiency.

Drawings

FIG. 1 is a front view of a transport positioning mechanism in a tray transport apparatus provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a part of a conveying positioning mechanism in a tray conveying device provided by an embodiment of the invention;

FIG. 3 is a rear view of the transport positioning mechanism in the tray transport apparatus provided by the embodiment of the invention;

FIG. 4 is a schematic diagram of the overall structure of the recovery conveying mechanism in the tray conveying device according to the embodiment of the invention;

FIG. 5 is a first partial schematic structural diagram of a recycling conveying mechanism in the tray conveying device according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a part of the recovery conveying mechanism in the tray conveying device according to the embodiment of the present invention.

In the figure:

1. a transmission positioning mechanism; 11. a mounting seat; 111. a left frame; 112. a right frame; 113. a feeding gap;

12. a transmission assembly; 121. a transmission motor; 122. a transmission shaft; 123. a conveyor belt; 124. a driving pulley; 125. a driven pulley; 126. a driving gear; 127. a driven gear; 128. a transmission gear; 129. a support block;

13. a positioning assembly; 131. a reference positioning assembly; 1311. a reference positioning cylinder; 1312. a connecting seat; 1313. a reference positioning guide rail; 132. a flexible positioning assembly; 1321. a flexible positioning cylinder; 1322. a fixed seat; 1323. a flexible positioning guide rail;

2. a recovery conveying mechanism; 21. a base; 211. a vertical mounting base; 212. a horizontal mounting base; 22. adjusting the motor; 23. a lead screw; 24. a slide rail;

25. a grasping assembly; 251. a base; 252. a grabbing cylinder; 253. a vacuum chuck; 254. a telescopic guide rod;

26. a transfer assembly; 261. a speed-regulating motor; 262. a transfer shaft; 263. a conveyor belt; 264. a driving wheel; 265. a driven wheel; 266. a power transmission belt; 267. a power transmission wheel.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The embodiment of the invention discloses a tray conveying device, which comprises a conveying positioning mechanism 1 and a recovery conveying mechanism 2, wherein the conveying positioning mechanism 1 and the recovery conveying mechanism 2 are oppositely arranged, as shown in figures 1-6. Optionally, the conveying and positioning mechanism 1 includes a mounting seat 11, a conveying assembly 12 and a positioning assembly 13, the conveying assembly 12 and the positioning assembly 13 are both disposed on the mounting seat 11, and the positioning assembly 13 abuts against the side edge of the tray. Retrieve transport mechanism 2 and the butt joint of transmission positioning mechanism 1, retrieve transport mechanism 2 and include base 21, snatch subassembly 25 and transfer module 26 and all locate on base 21, snatch subassembly 25 and can snatch the charging tray and place on transfer module 26.

The automatic conveying device realizes the automatic conveying of the material trays by arranging the conveying component 12 and the conveying component 26, and improves the conveying efficiency; the positioning component 13 is arranged along the direction vertical to the conveying direction of the material tray and is abutted against the side edge of the material tray to position the material tray, so that the conveying stability of the material tray is improved; the grabbing component 25 is arranged to automatically grab the material tray, so that the material tray is butted between the transmission positioning mechanism 1 and the recovery conveying mechanism 2, the manual participation is reduced, and the transmission efficiency is further improved.

The structure of the transmission positioning mechanism 1 will be described in detail below with reference to the accompanying drawings.

Optionally, the mounting base 11 is a frame structure, and includes a left frame 111 and a right frame 112 that are relatively fixedly disposed, and a feeding gap 113 is formed between the left frame 111 and the right frame 112, so as to facilitate feeding of the tray.

Further, the conveying assembly 12 includes a conveying motor 121, a conveying shaft 122, and a conveying belt 123. Wherein, the transmission motor 121 is disposed on the mounting base 11. The transmission shaft 122 is in transmission connection with the transmission motor 121, the transmission shaft 122 is perpendicular to the conveying direction of the material tray, two ends of the transmission shaft 122 are in transmission connection with a driving belt wheel 124 respectively, and a driven belt wheel 125 is arranged on the same side of each driving belt wheel 124. Two conveying belts 123 are provided, each conveying belt 123 is sleeved on the driving pulley 124 and the driven pulley 125 on the same side, and the trays are conveyed on the conveying belts 123. Specifically, the two ends of the transmission shaft 122 are respectively rotatably disposed on the left frame and the right frame, and the left frame and the right frame are both provided with the driving pulley 124 and the driven pulley 125, so that the material tray is transmitted in the material conveying gap 1113.

According to the design, the transmission motor 121 rotates to drive the transmission shaft 122 to rotate, so as to drive the driving belt wheel 124 and the driven belt wheel 125 to rotate, thereby driving the transmission belt 123 to move, and realizing the transmission of the material tray in the material conveying gap 113. Of course, in other embodiments, the tray may also be transported by a transport chain, and is not limited to the structure of the transport belt 123 in this embodiment.

In order to improve the stability of power transmission, the transmission assembly 12 further includes a driving gear 126, two driven gears 127 and a transmission gear 128, wherein the driving gear 126 is fixed on the output shaft of the transmission motor 121, the transmission gear 128 is provided with two gears and is arranged corresponding to the two driving pulleys 124 one by one, the driven gears 127 are provided with two gears and are respectively meshed with the two transmission gears 128, each driven gear 127 is coaxially arranged with one driving pulley 124, and the driving gear 126 is selectively meshed with one driven gear 127.

According to the arrangement, the driving gear 126 is driven to rotate through the rotation of the transmission motor 121, the driven gear 127 and the transmission gear 128 are driven to rotate, so that the transmission belts 123 on two sides are driven to move synchronously, the transmission of a material tray in the material conveying gap 113 is realized, and the stability is good.

Secondly, in order to facilitate the detection of the position of the material tray, the transmission positioning mechanism 1 further comprises a first position sensor, and the first position sensor is mounted on the mounting seat 11 to control the transmission motor 121 to stop rotating when the material tray moves to a preset position, so that the material tray is transmitted to a specific position. In this embodiment, the first position sensor is a photoelectric sensor, and the preset position is the middle position of the feeding gap 113. In other embodiments, the type and the preset position of the first position sensor can be adjusted according to the requirement, and are not limited to this embodiment.

Further, in order to prevent the tray from generating an excessive pressure on the conveying belt 123 due to the excessive weight, so as to affect the normal movement of the conveying belt 123, the conveying assembly 12 in this embodiment further includes a supporting block 129 fixed on the mounting seat 11, and the supporting block 129 is located in a gap surrounded by the conveying belt 123 and contacts with the top of the conveying belt 123, so as to support the tray on the conveying belt 123, improve the supporting strength of the conveying belt 123, and ensure the normal conveying function of the conveying belt 123. Correspondingly, there are two supporting blocks 129, and two supporting blocks 129 are disposed in one-to-one correspondence with the two conveying belts 123 to support both the two conveying belts 123.

As a preferable technical solution of the tray conveying device in this embodiment, the positioning component 13 includes a reference positioning component 131 and a flexible positioning component 132, and the reference positioning component 131 and the flexible positioning component 132 are respectively disposed on two sides of the tray along a direction perpendicular to a conveying direction of the tray, so as to realize simultaneous positioning of two sides of the tray and reduce wear to the tray.

Specifically, the reference positioning assembly 131 is disposed on the right frame 112, and includes a reference positioning cylinder 1311, a connection seat 1312, and a reference positioning rail 1313. Wherein, the reference positioning cylinder 1311 is arranged on the mounting seat 11. The connecting base 1312 is connected with the output end of the reference positioning cylinder 1311, a plurality of reference positioning blocks are arranged on the connecting base 1312, and the plurality of reference positioning blocks are all abutted to the first side of the tray. A reference positioning rail 1313 is provided on the right frame 112, and a coupling seat 1312 is slidably provided on the reference positioning rail 1313.

According to the arrangement, after the tray is driven by the conveying belt 123 to enter the middle of the conveying gap 113, the reference positioning cylinder 1311 is started, the connecting seat 1312 is driven to slide close to the tray along the reference positioning guide rail 1313 until the reference positioning block abuts against the first side of the tray, and then the first side of the tray can be positioned.

Further, the flexible positioning assembly 132 includes a flexible positioning cylinder 1321, a fixing seat 1322, and a flexible positioning rail 1323. Wherein, flexible positioning cylinder 1321 is arranged on the mounting seat 11. The fixing seat 1322 is connected with an output end of the reference positioning cylinder 1311, a plurality of flexible positioning blocks are arranged on the fixing seat 1322, the flexible positioning blocks are abutted to the second side of the material tray, and the second side is opposite to the first side. The flexible positioning rail 1323 is disposed on the mounting seat 11, and the fixing seat 1322 is slidably disposed on the flexible positioning rail 1323.

According to the arrangement, after the tray is driven by the conveyor belt 123 to enter the middle of the material conveying gap 113, the flexible positioning cylinder 1321 is started while the reference positioning cylinder 1311 is started, the fixing seat 1322 is driven to slide close to the tray along the flexible positioning guide rail 1323 until the flexible positioning block abuts against the second side of the tray, and then the second side of the tray can be positioned. Consequently, this embodiment realizes the accurate location to the charging tray through flexible locating piece and the butt in the time of benchmark locating piece to the charging tray both sides, has avoided the damage to the charging tray simultaneously.

For example, the flexible positioning block may be made of a material with elasticity, such as rubber, or may be elastically connected to the fixing seat 1322 through an elastic member, which may be specifically arranged as required, and this embodiment is not particularly limited.

The recovery conveying mechanism 2 is used for grabbing and conveying the material tray to realize the recovery of the material tray, and the structure of the recovery conveying mechanism 2 is described in detail below with reference to the accompanying drawings. The base 21 includes a vertical mount 211 and a horizontal mount 212 fixedly connected such that the entire base 21 is T-shaped. Further, the grabbing component 25 is slidably disposed on the vertical mounting seat 211, the conveying component 26 is disposed on the horizontal mounting seat 212, and the grabbing component 25 can grab and place the tray positioned on the conveying belt 123 on the conveying component 26.

In order to realize the sliding of the grabbing component 25, the recycling conveying mechanism 2 further comprises an adjusting motor 22, a lead screw 23 and a slide rail 24, wherein the adjusting motor 22 is arranged on the base 21, the lead screw 23 is in transmission connection with the adjusting motor 22, the grabbing component 25 is in threaded connection with the lead screw 23, the lead screw 23 is arranged along the height direction of the base 21, the slide rail 24 is arranged on the base 21, and the grabbing component 25 is arranged on the slide rail 24 in a sliding manner. According to the arrangement, when the grabbing component 25 needs to move, the adjusting motor 22 is started to drive the screw rod 23 to rotate, so that the grabbing component 25 moves axially along the screw rod 23 on the slide rail 24, and adjustment of different heights is achieved. Wherein, slide rail 24 not only restricts grabbing subassembly 25 along the rotation of the circumference of lead screw 23, but also can promote the stability of grabbing subassembly 25 motion.

Specifically, the grabbing assembly 25 comprises a base 251, a grabbing cylinder 252 and a vacuum chuck 253, wherein the base 251 is in threaded connection with the lead screw 23, the base 251 is slidably connected to the slide rail 24, the grabbing cylinder 252 is disposed on the base 251, the vacuum chuck 253 is connected to an output end of the grabbing cylinder 252, and the vacuum chuck 253 is used for adsorbing and fixing the tray. Therefore, the grabbing component 25 is moved to a proper height, the grabbing cylinder 252 is started to drive the vacuum chuck 253 to move close to the material tray until the vacuum chuck 253 is contacted with the material tray, the vacuum chuck 253 is started to adsorb and fix the material tray, the grabbing cylinder 252 is controlled to drive the vacuum chuck 253 carrying the material tray to retract, and the vacuum chuck 253 is closed until the material tray is placed on the conveying component 26, so that the material tray is unloaded.

The moving direction of the vacuum chuck 253 is the axial direction of the lead screw 23, and the structure of the vacuum chuck 253 is the prior art and is not described herein again.

Further, the gripping assembly 25 further includes a telescopic guide rod 254, and the telescopic guide rod 254 is connected to both the base 251 and the vacuum chuck 253, so as to improve the supporting force for the vacuum chuck 253. In this embodiment, four telescopic guide rods 254 are provided, and the four telescopic guide rods 254 are distributed at intervals along the circumferential direction of the output end of the gripping cylinder 252 to uniformly support the vacuum chuck 253.

Secondly, conveying assembly 26 is used for going out the charging tray conveying, conveying assembly 26 includes buncher 261, conveying axle 262 and conveyer belt 263, wherein, buncher 261 sets up on base 21, conveying axle 262 is connected with buncher 261 transmission, conveying axle 262 perpendicular to charging tray direction of transfer sets up, the both ends of conveying axle 262 are equipped with action wheel 264, the homonymy of every action wheel 264 all is equipped with one and follows driving wheel 265, action wheel 264 and follow driving wheel 265 all rotationally set up on base 21, conveyer belt 263 is equipped with two, every conveyer belt 263 all overlaps on action wheel 264 and the follow driving wheel 265 of homonymy, conveyer belt 263 is used for exporting the charging tray on the vacuum chuck 253.

According to the design, the transmission shaft 262 is driven to rotate by the rotation of the speed regulating motor 261, the driving wheel 264 and the driven wheel 265 are driven to rotate, and the conveying belt 263 is driven to move, so that the conveying of the material tray on the base 21 is realized. Of course, in other embodiments, the tray can be transported by a transport chain, and is not limited to the structure of the conveyor belt 263 in this embodiment.

Specifically, the transmission assembly 26 further includes a power transmission belt 266 and two power transmission wheels 267, wherein one power transmission wheel 267 is fixed on the output shaft of the speed-regulating motor 261, the other power transmission wheel 267 is fixed on the transmission shaft 262, and the power transmission belt 266 is sleeved on the two power transmission wheels 267. According to the arrangement, the rotation of the speed regulating motor 261 drives the power transmission wheel 267 and the power transmission belt 266 to rotate, so as to drive the driving wheel 264 and the driven wheel 265 to rotate, thereby driving the transmission belt 263 to rotate, and realizing the transmission of the material tray.

Further, the conveying assembly 26 further includes a second position sensor disposed on the base 21 for detecting the position of the tray to control the on/off of the speed regulating motor 261, so as to convey the tray to a specific position. In this embodiment, the second position sensor is a photoelectric sensor, and the specific position is the transfer end of the transfer belt 263. In other embodiments, the type and specific position of the second position sensor can be adjusted according to the requirement, and the present embodiment is not limited thereto.

In this embodiment, the transmission shaft 262, the transmission belt 263 and the second position sensor are all disposed on the horizontal mounting base 212, and the speed regulating motor 261 is disposed on the vertical mounting base 211 to reduce the bearing force of the horizontal mounting base 212.

To facilitate understanding of the tray conveying device of the present invention, the conveying process of the tray conveying device is described as follows:

1. the conveying assembly 12 conveys the stacked material trays to the middle part of the conveying gap 113, and at the moment, the first displacement sensor signals to control the conveying motor 121 to stop;

2. starting the positioning assembly 13, moving the reference positioning assembly 131 and the flexible positioning assembly 132 on the two sides close to the material tray until the reference positioning block and the flexible positioning block are respectively abutted against the two sides of the material tray, and closing the positioning assembly 13;

3. starting the grabbing assembly 25, enabling the vacuum chuck 253 to move close to the material tray under the driving of the grabbing cylinder 252 until the vacuum chuck 253 is contacted with the material tray, and starting the vacuum chuck 253 to adsorb and fix the material tray;

4. controlling the grabbing cylinder 252 to transfer the vacuum chuck 253 carrying the material tray onto the conveying assembly 26, and closing the vacuum chuck 253 to unload the material tray; 5. and when the conveying assembly 26 is started, the speed regulating motor 261 drives the conveying shaft 262 to rotate, so that the conveying belt 263 is driven to move, the material tray is conveyed to a specific position, and at the moment, the second displacement sensor signals to control the speed regulating motor 261 to stop rotating, so that the material tray is conveyed completely.

In summary, the present invention provides a tray conveying device, which has the following advantages:

(1) the automatic conveying of the material trays is realized by arranging the conveying component 12 and the conveying component 26, so that the conveying efficiency is improved;

(2) the positioning assembly 13 is arranged, the positioning assembly 13 is abutted against the side edge of the material tray to position the material tray, and the transmission stability of the material tray is improved;

(3) the grabbing component 25 is arranged to automatically grab the material tray, so that the material tray is butted between the transmission positioning mechanism 1 and the recovery conveying mechanism 2, the manual participation is reduced, and the transmission efficiency is further improved.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.