Feeding and discharging device for forming trays

Abstract

The utility model provides a feeding and discharging device for forming a tray, which comprises a device body, a rack is arranged in the device body, a manipulator is mounted on the rack, a first lifting mechanism for lifting the tray and a second lifting mechanism with the same structure as the first lifting mechanism are respectively mounted on two sides of the bottom of the rack, and the first lifting mechanism is connected with the second lifting mechanism. A transfer mechanism for transferring the tray from the first lifting mechanism to the second lifting mechanism is further mounted on the rack; the transfer mechanism comprises a driving module and a transmission module; the driving module is connected with the transmission module through a connecting rod; according to the feeding and discharging device, the processes of tray feeding, tray transferring and tray discharging can be achieved, and the tray feeding and discharging efficiency can be improved; the transfer mechanism composed of the driving module and the transmission module can quickly transfer the loaded tray from the first lifting mechanism to the second lifting mechanism, other auxiliary structures are not needed, and the manufacturing cost of the device can be saved.

Description

Technical Field

[0001] This utility model relates to the field of loading and unloading technology, and in particular to a loading and unloading structure for forming pallets. Background Technology

[0002] During the product manufacturing process, materials are loaded onto or removed from pallets between different processes or procedures. Traditionally, manual or robotic methods are used for material handling. Manual methods are not only labor-intensive but also inefficient. Although robotic methods are more efficient than manual methods, they also have the drawback of not being able to completely remove materials. For example, robotic arms cannot move pallets to the edge, which also affects work efficiency.

[0003] Therefore, a loading and unloading device is needed that can unload materials onto a pallet and transfer the loaded pallet to the next process. Utility Model Content

[0004] The main objective of this invention is to provide a loading and unloading device for forming pallets, addressing the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A loading and unloading device for forming pallets includes a hollow device body with a hollow frame inside. A robotic arm with a vacuum nozzle for loading is mounted on the frame. A first lifting mechanism and a second lifting mechanism with the same structure as the first lifting mechanism are respectively mounted on the bottom sides of the frame. A transfer mechanism for transferring the pallet from the first lifting mechanism to the second lifting mechanism is also mounted on the frame. The transfer mechanism includes a drive module and a transmission module opposite to the drive module. The drive module includes a first lifting cylinder and a first translation cylinder fixedly connected to the first lifting cylinder. A first limiting block that can abut against the bottom of the pallet is mounted at the end of the first lifting cylinder. A first fixing plate fixedly connected to the bottom of the first translation cylinder is mounted on the bottom of the first fixing plate. The system includes a first slide rail for the drive module to move along the surface of the frame, and a semi-enclosed inner-opening cable chain for driving the drive module to move along the first slide rail is fixedly installed on the outer side of the first fixed plate. The transmission module includes a second lifting cylinder and a second translation cylinder fixedly connected to the second lifting cylinder. A second limiting block that can abut against the bottom of the tray is installed at the end of the second lifting cylinder. A second fixed plate fixedly connected to the bottom of the second translation cylinder is installed thereto. A second slide rail for the transmission module to move along the surface of the frame is fixedly installed at the bottom of the second fixed plate. A propulsion assembly for driving the transmission module to move along the second slide rail is fixedly installed on the inner side of the second fixed plate. The ends of the first fixed plate and the ends of the second fixed plate on the same side are connected by a connecting rod to connect the drive module and the transmission module.

[0007] As a preferred embodiment of the loading and unloading device for forming pallets described in this utility model, the frame surface is further equipped with two fixing members for fixing the two sides of the pallet respectively. The fixing members include a drive cylinder and a third limiting block disposed at the end of the drive cylinder.

[0008] As a preferred embodiment of the loading and unloading device for forming pallets described in this utility model, the propulsion assembly includes a coupling rodless cylinder disposed at the bottom of the frame and a connecting plate fixedly installed on the inner side of the second fixed plate. The coupling rodless cylinder is fixedly connected to the connecting plate, and the connecting plate moves along a slide groove disposed on the surface of the frame and drives the transmission module to move along the second slide rail.

[0009] As a preferred embodiment of the loading and unloading device for forming pallets described in this utility model, a first position sensor for sensing the position movement of the drive module is provided next to the first lifting cylinder, and a second position sensor for sensing the position movement of the transmission module is provided next to the second lifting cylinder.

[0010] As a preferred embodiment of the loading and unloading device for forming pallets described in this utility model, the tops of the first limiting block, the second limiting block, and the third limiting block are all equipped with abutments.

[0011] As a preferred embodiment of the loading and unloading device for forming pallets described in this utility model, the distance between the connecting rod and the abutment on the third limiting block is greater than the height of the pallet.

[0012] As a preferred embodiment of the loading and unloading device for forming pallets described in this utility model, the first lifting mechanism includes a lifting platform installed at the bottom of the frame. The lifting platform is fixedly connected to a flat plate for placing the pallet. A third position sensor for sensing the position of the lifting platform is installed on the surface wall of the lifting platform. A fourth position sensor for sensing the position of the flat plate is installed at the bottom of the flat plate. L-shaped baffles are installed on both the front and rear sides of the flat plate.

[0013] As a preferred embodiment of the loading and unloading device for forming pallets described in this utility model, conveyor belts are installed on both sides of the lifting platform, and the rear ends of the two conveyor belts are connected by a rotating shaft. The back of the lifting platform is connected to a drive motor that can drive the two conveyor belts to rotate, and the drive motor is connected to the rotating shaft through a transmission belt.

[0014] As a preferred embodiment of the loading and unloading device for forming pallets described in this utility model, a protective plate to prevent the pallet from tipping over is installed on the side of the conveyor belt.

[0015] As a preferred embodiment of the loading and unloading device for forming pallets described in this utility model, the width of the flat plate is smaller than the distance between the conveyor belts on both sides.

[0016] Compared with the prior art, the present invention will have at least the following beneficial effects:

[0017] ① This utility model device can achieve the purpose of pallet loading, pallet transfer, and pallet unloading; ② The transfer mechanism composed of the drive module and the transmission module can quickly transfer the loaded pallet from the first lifting mechanism to the second lifting mechanism without the need for other auxiliary devices, thus saving device costs; ③ The abutment setting of the first limiting block, the second limiting block, and the third limiting block with the corresponding grooves on the side of the pallet can keep the pallet in a fixed state during the transfer process, preventing the pallet from tipping over; ④ The cooperation between the first lifting mechanism, the second lifting mechanism, and the conveyor belt is beneficial to the pallet transport. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort, wherein:

[0019] Figure 1 This is a schematic diagram of the loading and unloading device for forming pallets according to the present invention.

[0020] Figure 2 This is a schematic diagram of the transfer mechanism structure of the loading and unloading device for forming pallets according to this utility model;

[0021] Figure 3 for Figure 2 A cross-sectional view of the drive module side;

[0022] Figure 4 for Figure 2 A cross-sectional view of one side of the transmission module;

[0023] Figure 5 for Figure 2 A schematic diagram of the structure from an upward-looking perspective;

[0024] Figure 6 This is a schematic diagram of the first lifting mechanism of the loading and unloading device for forming pallets according to the present invention.

[0025] Figure 7 for Figure 6 The front view;

[0026] Figure 8 for Figure 6 A schematic diagram of the back structure.

[0027] The reference numerals in the figures include:

[0028] 1. Device body; 2. Frame; 3. Robotic arm; 300. Vacuum nozzle; 4. First lifting mechanism; 400. Lifting platform; 401. Flat plate; 402. Third position sensor; 403. Fourth position sensor; 404. L-shaped baffle; 5. Second lifting mechanism; 6. Tray; 600. Slot; 7. First lifting cylinder; 8. First translation cylinder; 9. First limit block; 10. First fixing plate; 11. First slide rail; 12. Semi-enclosed internally opening cable chain; 13. Second lifting cylinder; 14. Second translation cylinder; 5. Second limiting block; 16. Second fixing plate; 17. Second slide rail; 18. Coupled rodless cylinder; 19. Connecting plate; 20. Slide groove; 21. Connecting rod; 22. Drive cylinder; 23. Third limiting block; 24. Abutment block; 25. First position sensor; 26. Second position sensor; 27. Conveyor belt; 28. Rotating shaft; 29. ​​Drive motor; 30. Transmission belt; 31. Guard plate; 32. Sliding door; 33. Control panel; 34. Fan dust cover; 35. Alarm; 36. Casters; 37. Fixed feet. Detailed Implementation

[0029] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely exemplary embodiments of this utility model, and not the only embodiments.

[0030] See Figures 1 to 8 A loading and unloading device for forming pallets includes a device body 1 with a hollow interior, a hollow frame 2 inside the device body 1, the surface of the frame 2 being divided into two hollow sections, a robotic arm 3 with a vacuum nozzle 300 for loading is mounted on the frame 2, and a first lifting mechanism 4 for lifting pallets 6 and a second lifting mechanism 5 with the same structure as the first lifting mechanism 4 are respectively mounted on the bottom sides of the frame 2, wherein the first lifting mechanism 4 lifts and moves in one of the hollow sections, and the second lifting mechanism 5 lifts and moves in the other hollow section;

[0031] The first lifting mechanism 4 includes a lifting platform 400 installed at the bottom of the frame 2. The lifting platform 400 is fixedly connected to a flat plate 401 for placing a square pallet 6. A third position sensor 402 for sensing the position of the lifting platform 400 is installed on the surface wall of the lifting platform 400. A fourth position sensor 403 for sensing the position of the flat plate 401 is installed at the bottom of the flat plate 401. L-shaped baffles 404 for strengthening the fixing of the pallet 6 are installed on both the front and rear sides of the flat plate 401. In addition, the L-shaped baffles 404 can also prevent the pallet 6 from tilting forward and tipping over. The first lifting mechanism 4 lifts the empty pallet 6 to the surface of the frame 2. The robot arm 3 uses a vacuum nozzle 300 to load the material into the empty pallet 6, thus completing the loading operation into the empty pallet 6. After the pallet 6 is loaded, it needs to be transferred from the flat plate 401 of the first lifting mechanism 4 to the flat plate 401 of the second lifting mechanism. Therefore, the frame 2 is also equipped with a transfer mechanism to transfer the pallet 6 from the first lifting mechanism 4 to the second lifting mechanism 5.

[0032] The transfer mechanism includes a drive module and a transmission module opposite to the drive module. Specifically, the drive module includes a first lifting cylinder 7 and a first translation cylinder 8 fixedly connected to the first lifting cylinder 7. A first limiting block 9 is installed at the end of the first lifting cylinder 7, which can abut against the bottom of the tray 6. The first limiting block 9 abuts against the corresponding slot 600 of the tray 6 to fix the tray 6. To strengthen the fixing effect of the first limiting block 9, a stop block 24 is installed on the top of the first limiting block 9 to abut against the tray 6. In this process, another function of the first lifting cylinder 7 is to adjust the position of the tray 6 using the first limiting block 9. In actual operation, after the first limiting block 9 contacts the tray 6... The first lifting cylinder 7 rises a certain distance, and then, driven by the first translation cylinder 8, it extends along the tray 6 until the first limiting block 9 can firmly abut against the corresponding slot 600 of the tray 6. A first fixing plate 10 is fixedly connected to the bottom of the first translation cylinder 8. A first slide rail 11, allowing the drive module to move along the surface of the frame 2, is fixedly installed on the bottom of the first fixing plate 10. A semi-enclosed inner-opening drag chain 12, allowing the drive module to move along the first slide rail 11, is fixedly installed on the outer side of the first fixing plate 10. The transmission module includes a second lifting cylinder 13 and a second translation cylinder 14 fixedly connected to the second lifting cylinder 13. The end of the second lifting cylinder 13... A second limiting block 15 is installed that abuts against the bottom of the tray 6. The second limiting block 15 abuts against the corresponding slot 600 of the tray 6 to fix the tray 6. To strengthen the fixing effect of the second limiting block 15, a stop block 24 that abuts against the tray 6 is installed on the top of the second limiting block 15. During this process, the second lifting cylinder 13 has the same function as the first lifting cylinder 7, namely, to adjust the position of the tray 6 by the second limiting block 15. In actual operation, after the second limiting block 15 contacts the tray 6, the second lifting cylinder 13 will rise a certain distance. Then, driven by the second translation cylinder 14, the second lifting cylinder 13 will extend along the tray 6 until the second limiting block 15 can be securely fixed. The second translation cylinder 14 is fixedly connected to the bottom of a second fixed plate 16. The bottom of the second fixed plate 16 is fixedly installed with a second slide rail 17 that allows the transmission module to move along the surface of the frame 2. The inner side of the second fixed plate 16 is fixedly installed with a propulsion assembly that can drive the transmission module to move along the second slide rail 17. The propulsion assembly includes a coupling rodless cylinder 18 set at the bottom of the frame 2 and a connecting plate 19 fixedly installed with the inner side of the second fixed plate 16. The coupling rodless cylinder 18 is fixedly connected to the connecting plate 19. The connecting plate 19 moves along the slide groove 20 set on the surface of the frame 2 and drives the transmission module to move along the second slide rail 17.

[0033] The end of the first fixing plate 10 and the end of the second fixing plate 16 on the same side are connected by a connecting rod 21 to connect the drive module and the transmission module. After the connecting rod 21 connects the drive module and the transmission module, when the drive module moves, it will drive the transmission module to move in the same direction. Specifically, after the pallet 6 is loaded, the first translation cylinder 8 pushes the first lifting cylinder 7 and makes the first limiting block 9 at the end of the first lifting cylinder 7 abut against the corresponding slot 600 of the pallet 6. The second translation cylinder 14 pushes the second lifting cylinder 13 and makes the second limiting block 15 at the end of the second lifting cylinder 13 abut against the corresponding slot 600 of the pallet 6. The first limiting block 9 and the second limiting block 15 abut against each other. The pallet 6 is then fixed in place. After the pallet 6 is fixed, the drive module moves along the first slide rail 11 under the action of the semi-enclosed inner-opening drag chain 12. At the same time, the transmission module moves along the second slide rail 17 under the action of the propulsion component. It should be noted that before this, the second lifting mechanism 5 rises and the plate 401 on the second lifting mechanism 5 can receive the loaded pallet 6. Therefore, the drive module and the transmission module move in the same direction, that is, along the direction close to the hollow position of the second lifting mechanism 5. At this time, the pallet 6 held by the first lifting cylinder 7 and the second lifting clamp is moved to the plate 401 on the second lifting mechanism 5. Subsequently, the lifting platform 400 of the second lifting mechanism 5 descends to complete the unloading of the pallet 6.

[0034] The workflow of the loading and unloading device in this embodiment is as follows:

[0035] An empty pallet 6 is placed on the flat plate 401 of the first lifting mechanism 4. The first lifting mechanism 4 then rises to the first hollow position of the frame 2. Simultaneously, the second lifting mechanism 5 rises to the second hollow position on the flat plate 401. The vacuum nozzle 300 of the robotic arm 3 absorbs material and transfers it into the empty pallet 6. After the pallet 6 is loaded, the first translation cylinder 8 of the drive module drives the first lifting cylinder 7 to approach the corresponding side of the pallet 6, where the first limiting block 9 abuts against the slot 600 on the side of the corresponding pallet 6, and the abutment block 24 on the first limiting block 9 abuts against the side of the corresponding pallet 6. Simultaneously, the second translation cylinder 14 of the transmission module drives the second lifting cylinder 13 to approach the corresponding side of the pallet 6, where the second limiting block 15 abuts against the slot 600 on the side of the corresponding pallet 6, and the abutment block 24 on the second limiting block 15 abuts against the side of the corresponding pallet 6. Thus, the drive module and transmission module work together to fix the pallet 6. After the loading pallet 6 is fixed, the drive module starts, and the half-loaded pallet 6 is loaded. The inner-opening drag chain 12 rotates and drives the drive module to move along the first slide rail 11 to the second hollow position. At the same time, the transmission module moves along the second slide rail 17 to the second hollow position under the drive module. The loaded pallet 6 is transferred as a whole to the plate 401 of the first lifting mechanism 4 in the second hollow position. The first lifting cylinder 7 descends to disengage the first limiting block 9 from the groove 600 on the side of the corresponding pallet 6. The first translation cylinder 8 moves back to disengage the first lifting cylinder 7 from the pallet 6. At the same time, the second lifting cylinder 13 descends to disengage the second limiting block 15 from the groove 600 on the side of the corresponding pallet 6. The second translation cylinder 14 moves back to disengage the second lifting cylinder 13 from the pallet 6. Thus, the loaded pallet 6 is separated from the transfer mechanism and falls onto the plate 401 on the second lifting mechanism 5, completing the unloading process of the loaded pallet 6. As the second lifting mechanism 5 descends, the transfer mechanism moves back to its original position to complete the transfer process of the next pallet 6.

[0036] Furthermore, to enhance the fixation of pallet 6 during transfer, two fixing components are installed on the surface of the frame 2 to fix both sides of pallet 6 respectively. These fixing components include a drive cylinder 22 and a third limiting block 23 located at the end of the drive cylinder 22. Similar to the first limiting block 9 and the second limiting block 15, the third limiting block 23 also abuts against the corresponding groove 600 on the side of the pallet, thus strengthening the fixation of pallet 6. To further enhance the fixing effect of the third limiting block 23, an abutment block 24 is installed on the top of the third limiting block 23 to abut against pallet 6. In actual operation, after pallet 6 is loaded, the first limiting block 9... The second limiting block 15 simultaneously fixes the pallet 6, and the third limiting blocks 23 on the other two sides of the pallet 6 simultaneously fix the pallet 6, thus fixing the four sides of the pallet 6. Furthermore, in order to allow the pallet 6 to pass smoothly through the abutment 24 on the top of the third limiting block 23 during the transfer process, the distance between the connecting rod 21 and the abutment 24 on the third limiting block 23 should be greater than the height of the pallet 6. This setting allows the pallet 6, after being fixed and loaded, to pass between the connecting rod 21 and the abutment 24 on the third limiting block 23 without having to remove the drive cylinder 22 and the third limiting block 23, saving time and costs.

[0037] Furthermore, a first position sensor 25 for sensing the movement of the drive module is provided on the side of the first lifting cylinder 7, and a second position sensor 26 for sensing the movement of the transmission module is provided on the side of the second lifting cylinder 13.

[0038] Furthermore, conveyor belts 27 are installed on both sides of the lifting platform 400. When loading the pallet 6, the empty pallet 6 can be placed on the conveyor belt 27. The first lifting mechanism 4 rises, and after the plate 401 contacts the bottom of the pallet 6, the pallet 6 can be transferred to the plate 401. When the loaded pallet 6 descends with the second lifting mechanism 5, it needs to be unloaded. When the pallet 6 is lowered to a position parallel to the conveyor belt 27, it can fall directly onto the conveyor belt 27 and enter the subsequent unloading process, improving the unloading efficiency. To ensure that the pallet 6 can be smoothly transferred from the conveyor belt 27 to the plate 401 or from the plate 401 to the conveyor belt 27, the width of the plate 401 should be less than the distance between the two conveyor belts 27. At the same time, the width of the pallet 6 should be greater than the width of the plate 401, and the pallet 6... The width should be adapted to the spacing between the two conveyor belts 27. Specifically, the width of the pallet 6 should be greater than the width between the inner sides of the two conveyor belts 27, and the width of the pallet 6 should be less than or equal to the width between the outer sides of the two conveyor belts 27. To further ensure that the pallet 6 lands stably on the conveyor belt 27, a side-tipping guard plate 31 is installed on the side of the conveyor belt 27. In addition, the rear ends of the two conveyor belts 27 are connected by a rotating shaft 28. The back of the lifting platform 400 is connected to a drive motor 29 that can drive the two conveyor belts 27 to rotate. The drive motor 29 is connected to the rotating shaft 28 through a transmission belt 30. After the drive motor 29 is turned on, the transmission belt 30 rotates and drives the rotating shaft 28 to rotate. After the rotating shaft 28 rotates, it can drive the two conveyor belts 27 to rotate, thereby realizing the purpose of the two conveyor belts 27 conveying the pallet 6 to the discharge point.

[0039] Furthermore, the device body 1 may also be provided with a sliding door 32 for observing the inside of the device body 1 and a control panel 33 for controlling the operation of the device. The device body 1 is also provided with a fan dust cover 34, an alarm 35 is installed on the top of the device body 1, and universal wheels 36 for easy movement of the device body 1 and fixed feet 37 for fixing the position of the device body 1 after it is fixed are also installed at the four corners of the bottom of the device body 1.

[0040] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A feeding and discharging device for forming trays, comprising a device body (1) provided with a hollow inside, a rack (2) provided with a hollow inside is arranged in the device body (1), a mechanical hand (3) for feeding and provided with a vacuum nozzle (300) is arranged on the rack (2), a first lifting mechanism (4) for lifting a tray (6) and a second lifting mechanism (5) identical in structure with the first lifting mechanism (4) are arranged on the bottom of the rack (2) on both sides respectively, characterized in that, a transfer mechanism for transferring the tray (6) from the first lifting mechanism (4) to the second lifting mechanism (5) is further arranged on the rack (2), the transfer mechanism comprises a driving module and a transmission module arranged opposite to the driving module; the driving module comprises a first lifting cylinder (7) and a first translation cylinder (8) fixedly connected with the first lifting cylinder (7), a first limiting block (9) abutting against the bottom of the tray (6) is arranged on the end of the first lifting cylinder (7), a first fixed plate (10) fixedly connected with the first translation cylinder (8) is arranged on the bottom of the first translation cylinder (8), a first sliding rail (11) for moving the driving module along the surface of the rack (2) is fixedly arranged on the bottom of the first fixed plate (10), and a half-enclosed inner opening drag chain (12) for driving the driving module to move along the first sliding rail (11) is fixedly arranged on the outer side of the first fixed plate (10); the transmission module comprises a second lifting cylinder (13) and a second translation cylinder (14) fixedly connected with the second lifting cylinder (13), a second limiting block (15) abutting against the bottom of the tray (6) is arranged on the end of the second lifting cylinder (13), a second fixed plate (16) fixedly connected with the second translation cylinder (14) is arranged on the bottom of the second translation cylinder (14), a second sliding rail (17) for moving the transmission module along the surface of the rack (2) is fixedly arranged on the bottom of the second fixed plate (16), and a propulsion assembly for driving the transmission module to move along the second sliding rail (17) is fixedly arranged on the inner side of the second fixed plate (16); wherein the end of the first fixed plate (10) and the end of the second fixed plate (16) on the same side are connected by a connecting rod (21) to connect the driving module and the transmission module.

2. The loading and unloading device for the forming tray according to claim 1, characterized in that, two fixing members for fixing the tray (6) on both sides respectively are further arranged on the surface of the rack (2), the fixing member comprises a driving cylinder (22) and a third limiting block (23) arranged on the end of the driving cylinder (22).

3. The loading and unloading device for the forming tray according to claim 2, characterized in that, the propulsion assembly comprises a coupling rodless cylinder (18) arranged on the bottom of the rack (2) and a connecting plate (19) fixedly arranged on the inner side of the second fixed plate (16), the coupling rodless cylinder (18) is fixedly connected with the connecting plate (19), the connecting plate (19) moves along a sliding groove (20) arranged on the surface of the rack (2) and drives the transmission module to move along the second sliding rail (17).

4. The loading and unloading device for the forming tray according to claim 3, characterized in that, The first lifting cylinder (7) is provided with a first position sensor (25) for sensing the position of the driving module.

5. The loading and unloading device for the forming tray according to claim 2, characterized in that, The top of the first limiting block (9), the second limiting block (15) and the third limiting block (23) is provided with a resisting block (24).

6. The loading and unloading device for the forming tray according to claim 5, characterized in that, The distance between the connecting rod (21) and the resisting block (24) on the third limiting block (23) is greater than the height of the tray (6).

7. The loading and unloading device for molding trays according to claim 1, characterized in that, The first lifting mechanism (4) comprises a lifting table (400) installed at the bottom of the frame (2), the lifting table (400) is fixedly connected with a flat plate (401) for placing the tray (6), the surface wall of the lifting table (400) is provided with a third position sensor (402) for sensing the position of the lifting table (400), the bottom of the flat plate (401) is provided with a fourth position sensor (403) for sensing the position of the flat plate (401), and the front end and the rear end of the flat plate (401) are provided with L-shaped baffles (404).

8. The loading and unloading device for the forming tray according to claim 7, characterized in that, The lifting table (400) is provided with a conveying belt (27) on both sides, the rear ends of the conveying belts (27) on both sides are connected through a rotating shaft (28), the back of the lifting table (400) is connected with a driving motor (29) capable of driving the conveying belts (27) on both sides to rotate, and the driving motor (29) is connected with the rotating shaft (28) through a transmission belt (30).

9. The loading and unloading device for forming trays according to claim 8, characterized in that, The conveying belt (27) is provided with a guard plate (31) for preventing the tray (6) from tilting on the side.

10. The loading and unloading device for shaped trays (6) according to claim 8, characterized in that, The width of the flat plate (401) is less than the distance between the conveying belts (27) on both sides.

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