Telescopic fork feeding and discharging device used on plastic vacuum forming machine

Abstract

The utility model relates to the technical field of feeding and discharging devices, in particular to a telescopic fork feeding and discharging device used on a plastic vacuum forming machine. The telescopic fork feeding and discharging device comprises a telescopic fork taking and placing mechanism, and the telescopic fork taking and placing mechanism comprises a fixing plate, a first-stage telescopic plate slidably mounted on the lower end face of the fixing plate, a second-stage telescopic plate slidably mounted on the lower end face of the first-stage telescopic plate, a suction assembly mounted on the lower end face of the second-stage telescopic plate, a first telescopic driving assembly and a second telescopic driving assembly. The length directions of the fixed plate, the first-stage telescopic plate and the second-stage telescopic plate are arranged along the X axis; the first telescopic driving assembly drives the first-stage telescopic plate to do reciprocating translation relative to the fixed plate in the X-axis direction, and the second telescopic driving assembly drives the second-stage telescopic plate to do reciprocating translation relative to the first-stage telescopic plate in the X-axis direction. The plastic uptake single machine feeding and discharging device can conduct feeding and discharging on two plastic uptake single machines, is simple in structure and high in practicability, and remarkably reduces the occupied space of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of loading and unloading devices, and in particular to a telescopic fork loading and unloading device used in a vacuum forming machine. Background Technology

[0002] A vacuum forming machine, also known as a thermoforming machine, is a machine that uses heated and plasticized thermoplastic sheets such as PC, ABS, PC / ABS, PE, PP, PET, and PETG to form various shapes of high-end packaging boxes, frames, and other products. It utilizes the vacuum suction generated by a vacuum pump to mold heated and softened thermoplastic sheets into various shapes of vacuum covers, blister trays, and other packaging materials.

[0003] Existing loading and unloading mechanisms used in vacuum forming machines generally employ servo electric cylinders, linear modules, cylinders, suction cups, synchronous gears, and synchronous belts to achieve horizontal X-axis and Y-axis movement and vertical lifting of the sheet material and finished product. However, these mechanisms are relatively slow and complex. To address these issues, a telescopic fork loading and unloading device for vacuum forming machines is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a telescopic fork loading and unloading device for use in a vacuum forming machine, so as to solve the problems of low loading and unloading speed and complex structure of the loading and unloading mechanism used in the vacuum forming machine in the prior art.

[0005] The technical solution of this utility model is: a telescopic fork loading and unloading device used in a vacuum forming machine, comprising:

[0006] The telescopic fork loading and unloading mechanism includes a fixed plate, a primary telescopic plate slidably mounted on the lower end face of the fixed plate, a secondary telescopic plate slidably mounted on the lower end face of the primary telescopic plate, a suction component mounted on the lower end face of the secondary telescopic plate, a first telescopic drive component, and a second telescopic drive component. The length directions of the fixed plate, the primary telescopic plate, and the secondary telescopic plate are all arranged along the X-axis. The first telescopic drive component drives the primary telescopic plate to reciprocate relative to the fixed plate along the X-axis direction, and the second telescopic drive component drives the secondary telescopic plate to reciprocate relative to the primary telescopic plate along the X-axis direction.

[0007] The Z-axis drive mechanism drives the telescopic fork pick-and-place mechanism to rise and fall vertically along the Z-axis direction.

[0008] The Y-axis drive mechanism drives the Z-axis drive mechanism to reciprocate and translate along the Y-axis direction.

[0009] Preferably, the fixed plate and the first-stage telescopic plate are slidably assembled via a first linear guide rail module, and the first-stage telescopic plate and the second-stage telescopic plate are slidably assembled via a second linear guide rail module.

[0010] The first telescopic drive assembly includes a driving synchronous pulley, a driven synchronous pulley, multiple tension pulleys, a double-toothed synchronous belt sleeved on the multiple synchronous pulleys and tension pulleys, a first rack fixedly installed on the top surface of the first-stage telescopic plate, and a first drive component that drives the driving synchronous pulley to rotate; the first rack meshes with the double-toothed synchronous belt.

[0011] The second telescopic drive assembly includes a first-side drive module that drives the secondary telescopic plate to move along the X-axis towards a first side, and a second-side drive module that drives the secondary telescopic plate to move along the X-axis towards a second side opposite to the first side. The first-side drive module includes a first synchronous belt and a first synchronous pulley mounted on the first side end of the primary telescopic plate. One end of the first synchronous belt is fixed to the second side end of the bottom surface of the fixed plate, and after passing around the first synchronous pulley, the other end is fixed to the second side end of the top surface of the secondary telescopic plate. The second-side drive module includes a second synchronous belt and a second synchronous pulley mounted on the second side end of the primary telescopic plate. One end of the second synchronous belt is fixed to the first side end of the bottom surface of the fixed plate, and after passing around the second synchronous pulley and engaging, the other end is fixed to the first side end of the top surface of the secondary telescopic plate.

[0012] Preferably, the fixing plate has a notch in the middle for the double-sided toothed synchronous belt to pass through and mesh with the first rack, and the section of the double-sided toothed synchronous belt that rotates to the notch and meshes with the first rack is in a horizontal straight line shape.

[0013] The suction component is a vacuum suction cup component.

[0014] Preferably, the first linear guide module is a first roller linear guide, including multiple first rollers fixed to the lower end face of the fixed plate and a pair of parallel first linear guides fixed to the top surface of the first-stage telescopic plate, wherein the multiple first rollers slide in cooperation with the pair of first linear guides.

[0015] The second linear guide module is a second roller linear guide, including multiple second rollers fixed on the lower end face of the first-stage telescopic plate and a pair of parallel second linear guides fixed on the top surface of the second-stage telescopic plate. The multiple second rollers slide in cooperation with the pair of second linear guides.

[0016] Preferably, the Z-axis drive mechanism includes a Z-axis drive component mounted on a mounting plate and a guide assembly for guiding the lifting and lowering of the telescopic fork pick-up and place mechanism, wherein the telescopic fork pick-up and place mechanism is mounted on the movable part of the Z-axis drive component.

[0017] Preferably, the guide assembly includes a flange-type linear bearing fixed to the mounting plate and a guide rod sleeved in the flange-type linear bearing, with one end of the guide rod fixed to the top surface of the fixed plate;

[0018] The fixing plate is fixedly installed on the movable part of the Z-axis drive component.

[0019] Preferably, the Y-axis drive mechanism includes a third linear guide module and a second rack mounted on the frame and arranged along the Y-axis in the length direction, a gear meshing with the second rack, and a second drive member that drives the gear to rotate. The second drive member is mounted on a mounting plate.

[0020] The third linear guide module includes multiple sliders fixed to the lower end face of the mounting plate and a pair of parallel third linear guides fixed to the frame. The multiple sliders slide in cooperation with the pair of third linear guides.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] This utility model discloses a telescopic fork loading and unloading device for use in a vacuum forming machine, comprising: a telescopic fork picking and placing mechanism, a Z-axis drive mechanism, and a Y-axis drive mechanism. It can load and unload materials from two vacuum forming machines, featuring a simple structure and strong practicality. The telescopic fork picking and placing mechanism enables bidirectional rapid picking and placing, eliminating the need for a separate moving module above each of the two vacuum forming machines to move materials, thus avoiding interference between the moving module and the vacuum forming machines and significantly reducing the space occupied by the equipment. Existing telescopic fork structures have numerous components and complex control; the telescopic fork picking and placing mechanism of this utility model has a simpler structure and lower equipment cost. Furthermore, the second telescopic drive component utilizes the movement of the first-stage telescopic plate to drive the movement of the second-stage telescopic plate, eliminating the need for an additional drive mechanism, resulting in a simple and ingenious structure. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a schematic diagram of the structure of a telescopic fork loading and unloading device used in a vacuum forming machine as described in this embodiment;

[0025] Figure 2 This is a partial enlarged schematic diagram of a telescopic fork loading and unloading device used in a vacuum forming machine as described in this embodiment;

[0026] Figure 3 This is an enlarged schematic diagram of another part of the structure of the telescopic fork loading and unloading device used in a vacuum forming machine as described in this embodiment;

[0027] Figure 4 This is a schematic diagram of the structure of the telescopic fork loading and unloading device used in a vacuum forming machine as described in this embodiment, assembled on the vacuum forming machine.

[0028] Figure 5 In this embodiment, Figure 2 The direction is taken as the reference direction. The structural diagram of the second telescopic drive component is shown from the right to the left.

[0029] Figure 6 In this embodiment, Figure 2 The direction is taken as the reference direction. This is a schematic diagram of the structure of the second telescopic drive component when viewed from left to right.

[0030] The components include: 1. Fixed plate, 2. First-stage telescopic plate, 3. Second-stage telescopic plate, 4. Double-sided toothed synchronous belt, 5. First rack, 6. First motor, 7. Vacuum suction cup assembly, 8. First roller, 9. First linear guide rail, 10. Second linear guide rail, 11. Flange-type linear bearing, 12. Guide rod, 13. Linear servo electric cylinder, 14. Second rack, 15. Gear, 16. Second motor, 17. Slider, 18. Third linear guide rail, 19. First vacuum forming machine, 20. Second vacuum forming machine, 21. First feeding bin, 22. Second feeding bin, 23. Belt conveyor line, 24. Telescopic fork loading and unloading device, 25. Mounting plate, 26. First synchronous belt, 27. First synchronous belt pulley, 28. Second synchronous belt, 29. Second synchronous belt pulley. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to specific embodiments:

[0032] In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0033] like Figures 1-3 As shown, a telescopic fork loading / unloading device 24 used in a vacuum forming machine includes: a telescopic fork picking / placing mechanism, a Z-axis drive mechanism, and a Y-axis drive mechanism. Figure 1As shown, the telescopic fork loading and unloading mechanism includes a fixed plate 1, a primary telescopic plate 2 slidably mounted on the lower end face of the fixed plate 1, a secondary telescopic plate 3 slidably mounted on the lower end face of the primary telescopic plate 2, a suction assembly mounted on the lower end face of the secondary telescopic plate 3, a first telescopic drive assembly, and a second telescopic drive assembly. The length directions of the fixed plate 1, the primary telescopic plate 2, and the secondary telescopic plate 3 are all arranged along the X-axis. The first telescopic drive assembly drives the primary telescopic plate 2 to reciprocate relative to the fixed plate 1 along the X-axis, and the second telescopic drive assembly drives the secondary telescopic plate 3 to reciprocate relative to the primary telescopic plate 2 along the X-axis. The fixed plate 1 and the primary telescopic plate 2 are connected by a first linear guide. The first telescopic plate 2 and the second telescopic plate 3 are slidably assembled via a second linear guide module. The first telescopic drive assembly includes an active synchronous pulley, a driven synchronous pulley, multiple tension pulleys, a double-toothed synchronous belt 4 sleeved on the multiple synchronous pulleys and tension pulleys, a first rack 5 fixedly installed on the top surface of the first telescopic plate 2, and a first drive component that drives the active synchronous pulley to rotate. In this embodiment, the first drive component is a first motor 6. The active synchronous pulley, the driven synchronous pulley, and the multiple tension pulleys are mounted on a receiving plate perpendicular to the fixed plate 1, and the receiving plate is fixedly installed on the fixed plate 1. The first rack 5 meshes with the double-toothed synchronous belt 4.

[0034] like Figure 1 , Figure 3 , Figure 5 , Figure 6 As shown, the second telescopic drive assembly includes a first-side drive module that drives the secondary telescopic plate to move along the X-axis towards the first side, and a second-side drive module that drives the secondary telescopic plate to move along the X-axis towards the second side opposite to the first side. The first-side drive module includes a first synchronous belt 26 and a first synchronous pulley 27 mounted on the first side end of the primary telescopic plate 2. One end of the first synchronous belt 26 is fixed to the second side end of the bottom surface of the fixed plate 1, and after passing around the first synchronous pulley 27, the other end is fixed to the second side end of the top surface of the secondary telescopic plate 3. The second-side drive module includes a second synchronous belt 28 and a second synchronous pulley 29 mounted on the second side end of the primary telescopic plate 2. One end of the second synchronous belt 28 is fixed to the first side end of the bottom surface of the fixed plate 1, and after passing around the second synchronous pulley 29 and engaging, the other end is fixed to the first side end of the top surface of the secondary telescopic plate 3. In this embodiment, please refer to... Figure 4 Taking the direction as a reference, the first side is biased towards the first blister pack 19, and the second side is biased towards the belt conveyor 23; the second telescopic drive assembly uses the movement of the first telescopic plate 2 to drive the movement of the second telescopic plate 3, without the need for an additional drive mechanism, and the structure is simple and ingenious.

[0035] The working principle of the second telescopic drive assembly is as follows: In the initial state, the telescopic fork loading and unloading mechanism is located directly above the first feeding bin 21, and both the first-stage telescopic plate 2 and the second-stage telescopic plate 3 are in a retracted state overlapping with the fixed plate 1. When the first telescopic drive assembly drives the first-stage telescopic plate 2 to extend towards the first blister pack 19, the first synchronous pulley 27 follows the first-stage telescopic plate 2 to extend towards the first blister pack 19. Consequently, the first synchronous pulley 27 pulls the second-stage telescopic plate 3 to extend towards the first blister pack 19. At the same time, when the second-stage telescopic plate 3 extends towards the first blister pack 19... One end of the second synchronous belt 28, fixed to the top surface of the secondary telescopic plate 3, moves towards the side of the first vacuum forming machine 19 along with the secondary telescopic plate 3, providing tension to the second synchronous belt pulley 29, meaning the second synchronous belt 28 is also taut at this time. When the vacuum suction cup assembly 7 is directly above the vacuum-formed product in the first vacuum forming machine 19, the primary telescopic plate 2 and the secondary telescopic plate 3 stop extending. Then, the primary telescopic plate 2 and the secondary telescopic plate 3 retract, and the first telescopic drive assembly drives the primary telescopic plate 2 to move away from the first vacuum forming machine 19 and retract. At this time, the second synchronous belt pulley 29 follows the primary telescopic plate 2... Plate 2 moves away from the first vacuum forming machine 19, causing the second synchronous belt pulley 29 to pull the secondary telescopic plate 3 away from the first vacuum forming machine 19. Simultaneously, as the secondary telescopic plate 3 retracts away from the first vacuum forming machine 19, one end of the first synchronous belt 26 fixed to the top surface of the secondary telescopic plate 3 moves away from the first vacuum forming machine 19 along with the secondary telescopic plate 3, applying tension to the first synchronous belt pulley 27; that is, the first synchronous belt 26 is also in a taut state at this time. Then, both the primary telescopic plate 2 and the secondary telescopic plate 3 retract to a state overlapping with the fixed plate 1. Subsequently, the first telescopic drive... The moving component drives the first-stage telescopic plate 2 to extend closer to the belt conveyor 23. At this time, the second synchronous pulley 29 follows the first-stage telescopic plate 2 to extend closer to the belt conveyor 23. Consequently, the second synchronous pulley 29 pulls the second-stage telescopic plate 3 to extend closer to the belt conveyor 23. Simultaneously, as the second-stage telescopic plate 3 extends closer to the belt conveyor 23, one end of the first synchronous belt 26, which is fixed to the top surface of the second-stage telescopic plate 3, moves closer to the belt conveyor 23 along with the second-stage telescopic plate 3, giving the first synchronous pulley 27 a tension. That is, the first synchronous belt 26 is also in a taut state at this time.When the vacuum suction cup assembly 7 is directly above the belt conveyor 23, the first-stage telescopic plate 2 and the second-stage telescopic plate 3 stop extending and then retract. As the first telescopic drive assembly drives the first-stage telescopic plate 2 to retract away from the belt conveyor 23, the first synchronous pulley 27 follows the first-stage telescopic plate 2, moving away from the belt conveyor 23. This pulley 27 then pulls the second-stage telescopic plate 3 to retract away from the belt conveyor 23. Simultaneously, as the second-stage telescopic plate 3 retracts away from the belt conveyor 23, one end of the second synchronous belt 28, fixed to the top surface of the second-stage telescopic plate 3, follows the second-stage telescopic plate 3, moving away from the belt conveyor 23, thus applying tension to the second synchronous pulley 29. At this point, the second synchronous belt 28 is also in a taut state, returning to its initial state. At this time, the telescopic fork pick-and-place mechanism is directly above the first feeding bin 21, and both the first-stage telescopic plate 2 and the second-stage telescopic plate 3 are retracted, overlapping with the fixed plate 1.

[0036] like Figure 3 As shown, the fixed plate 1 has a notch in the middle for the double-sided toothed synchronous belt 4 to pass through and mesh with the first rack 5. The section of the double-sided toothed synchronous belt 4 that rotates to the notch and meshes with the first rack 5 is horizontally straight. The suction assembly is a vacuum suction cup assembly 7. Through the three-level nested design of the fixed plate 1, the first-level telescopic plate 2, and the second-level telescopic plate 3, combined with the multi-level drive assembly in the X-axis direction (first telescopic drive assembly, second telescopic drive assembly), a longer horizontal telescopic stroke can be achieved in a limited space.

[0037] like Figure 3 As shown, the first linear guide module is a first roller linear guide, including multiple first rollers 8 fixed to the lower end face of the fixed plate 1 and a pair of parallel first linear guides 9 fixed to the top surface of the first-stage telescopic plate 2. The multiple first rollers 8 are slidably engaged with the pair of first linear guides 9. The second linear guide module is a second roller linear guide, including multiple second rollers fixed to the lower end face of the first-stage telescopic plate 2 and a pair of parallel second linear guides 10 fixed to the top surface of the second-stage telescopic plate 3. The multiple second rollers are slidably engaged with the pair of second linear guides 10. The fixed plate 1 and the first-stage telescopic plate 2, and the first-stage telescopic plate 2 and the second-stage telescopic plate 3 are respectively slidably assembled through the first linear guide module and the second linear guide module, which reduces motion friction and ensures that each level of telescopic plate maintains high precision and stability when translating in the X-axis direction, avoiding offset or vibration during product handling.

[0038] like Figure 1 , Figure 2As shown, the Z-axis drive mechanism drives the telescopic fork pick-and-place mechanism to move vertically up and down along the Z-axis. The Z-axis drive mechanism includes a Z-axis drive component mounted on the mounting plate 25 and a guide assembly that guides the lifting and lowering of the telescopic fork pick-and-place mechanism. The telescopic fork pick-and-place mechanism is mounted on the movable part of the Z-axis drive component. The guide assembly includes a flange-type linear bearing 11 fixed on the mounting plate 25 and a guide rod 12 sleeved in the flange-type linear bearing 11. One end of the guide rod 12 is fixed to the top surface of the fixed plate 1. The fixed plate 1 is fixedly mounted on the movable part of the Z-axis drive component. In this embodiment, the Z-axis drive component is a linear servo electric cylinder 13. Using a linear servo electric cylinder 13 as the drive component, in conjunction with the flange-type linear bearing 11 and the rigid guide assembly of the guide rod 12, ensures high-precision positioning of the telescopic fork pick-and-place mechanism in the Z-axis direction, meeting the consistency requirements of the vacuum forming machine for product pick-and-place positions.

[0039] like Figure 2 As shown, the Y-axis drive mechanism drives the Z-axis drive mechanism to reciprocate along the Y-axis direction. The Y-axis drive mechanism includes a third linear guide module mounted on the frame and arranged along the Y-axis in its length direction, a second rack 14, a gear 15 meshing with the second rack 14, and a second drive component that drives the gear 15 to rotate. The second drive component is mounted on the mounting plate 25; in this embodiment, the second drive component is a second motor 16. The third linear guide module includes multiple sliders 17 fixed to the lower end face of the mounting plate 25 and a pair of parallel third linear guides 18 fixed to the frame. The multiple sliders 17 slide in cooperation with the pair of third linear guides 18. Using the gear 15 meshing with the second rack 14 for transmission, combined with the closed-loop control of the second motor 16, repeatable positioning accuracy in the Y-axis direction can be achieved. Furthermore, the rack meshing transmission rigidity is superior to that of belts or chains, making it suitable for the high-precision requirements of the loading and unloading trajectory in thermoforming machines. In this embodiment, multiple limit switches limit the extension stroke of the first-stage telescopic plate 2 and the second-stage telescopic plate 3.

[0040] like Figure 4 As shown, the present invention discloses a telescopic fork loading and unloading device 24 used on a vacuum forming machine, which simultaneously loads and unloads two vacuum forming machines. The vacuum forming machine includes a first vacuum forming machine 19 and a second vacuum forming machine 20 with identical structures. A first feeding bin 21 and a second feeding bin 22 are located directly below the telescopic fork loading and unloading device 24 along the Y-axis direction to supply materials to the first vacuum forming machine 19 and the second vacuum forming machine 20, respectively. A belt conveyor line 23 is located on the side of the first feeding bin 21 and the second feeding bin 22 to transport the vacuum forming products.

[0041] The working principle of the telescopic fork loading and unloading device 24 used in the vacuum forming machine in this utility model is as follows: Initial state: The second vacuum forming machine 20 is vacuum forming the product to be vacuum formed, the first vacuum forming machine 19 has a vacuum formed product that has been vacuum formed, the telescopic fork loading and unloading mechanism is located directly above the first feeding bin 21, and the first telescopic plate 2 and the second telescopic plate 3 are both in the state of overlapping and retracting with the fixed plate 1.

[0042] Then the operation begins. The first-stage telescopic plate 2 and the second-stage telescopic plate 3 extend simultaneously. Specifically, the first motor 6 of the first telescopic drive assembly drives the active synchronous pulley to rotate in the first direction, thereby driving the double-toothed synchronous belt 4, which is sleeved on the active synchronous pulley, the driven synchronous pulley, and the tensioning pulley, to rotate clockwise. The double-toothed synchronous belt 4 drives the first rack 5, which meshes with it, to move towards the first vacuum forming machine 19, thereby causing the first-stage telescopic plate 2 to extend towards the first vacuum forming machine 19. At the same time, the second telescopic drive assembly drives the second-stage telescopic plate 3 to extend towards the first vacuum forming machine 19 (the telescopic principle of the second-stage telescopic plate 3 has been described above and will not be repeated here). When the vacuum suction cup assembly 7 is directly above the vacuum-formed product in the first vacuum forming machine 19, the first-stage telescopic plate 2 and the second-stage telescopic plate 3 stop extending, and the linear servo electric cylinder 13 drives the fixed plate 1 to descend. The vacuum suction cup assembly 7 descends to adsorb the vacuum-formed product. After adsorbing the vacuum-formed product, the linear servo electric cylinder 13 drives the fixed plate 1 to rise, thereby driving the vacuum suction cup assembly 7 and the vacuum-formed product to rise. Then, the first-stage telescopic plate 2 and the second-stage telescopic plate 3 retract simultaneously. Specifically, the first motor 6 of the first telescopic drive assembly drives the active synchronous pulley to rotate in the opposite direction to the first direction, thereby driving the double-toothed synchronous belt 4 sleeved on the active synchronous pulley, the driven synchronous pulley, and the tensioning pulley to rotate counterclockwise. The double-toothed synchronous belt 4 drives the first toothed rack 5 meshing with it to move away from the first vacuum forming machine 19, thereby causing the first-stage telescopic plate 2 to retract. At the same time, the second telescopic drive assembly drives the second-stage telescopic plate 3 to retract away from the first vacuum forming machine 19. Then, both the first-stage telescopic plate 2 and the second-stage telescopic plate 3 retract to a state of overlapping retraction with the fixed plate 1.

[0043] Subsequently, the first motor 6 continues to drive the active synchronous pulley to rotate in the opposite direction to the first direction, and the double-sided toothed synchronous belt 4 continues to rotate counterclockwise, driving the first rack 5 to move towards the belt conveyor 23, thereby causing the first-stage telescopic plate 2 to extend towards the belt conveyor 23; the second telescopic drive assembly drives the second-stage telescopic plate 3 to continue extending towards the belt conveyor 23; when the vacuum suction cup assembly 7 carrying the thermoformed product is directly above the belt conveyor 23, the first-stage telescopic plate 2 and the second-stage telescopic plate 3 stop extending, the linear servo electric cylinder 13 drives the fixed plate 1 to descend, thereby driving the thermoformed product to descend, and then the vacuum suction cup assembly 7 releases, placing the thermoformed product on the belt conveyor 23;

[0044] A linear servo electric cylinder 13 drives the fixed plate 1 to rise, which in turn drives the vacuum suction cup assembly 7 to rise. Then, the first-stage telescopic plate 2 and the second-stage telescopic plate 3 retract simultaneously. Specifically, the first motor 6 of the first telescopic drive assembly drives the active synchronous pulley to rotate in the first direction, which in turn drives the double-toothed synchronous belt 4, which is sleeved on the active synchronous pulley, the driven synchronous pulley, and the tensioning pulley, to rotate clockwise. The double-toothed synchronous belt 4 drives the first rack 5, which meshes with it, to move away from the belt conveyor line 23, thereby causing the first-stage telescopic plate 2 to retract away from the belt conveyor line 23. At the same time, the second telescopic drive assembly drives the second-stage telescopic plate 3 to retract away from the belt conveyor line 23. The retraction stops when both the first-stage telescopic plate 2 and the second-stage telescopic plate 3 have retracted to a state where they overlap with the fixed plate 1.

[0045] The linear servo electric cylinder 13 drives the fixed plate 1 to descend, which in turn drives the vacuum suction cup assembly 7 to descend and pick up the top product to be vacuum-formed in the first feeding bin 21 (the first feeding bin 21 is equipped with a lifting mechanism; after the top product to be vacuum-formed is taken away by the vacuum suction cup assembly 7, the next product to be vacuum-formed will be lifted to the picking position). Then, the linear servo electric cylinder 13 drives the fixed plate 1 to rise, which in turn drives the vacuum suction cup assembly 7 and the product to be vacuum-formed to rise. Following the same working principle as described above, the first-stage telescopic plate 2 and the second-stage telescopic plate 3 extend towards the first vacuum forming machine 19, and then the product to be vacuum-formed is placed on the first vacuum forming machine 19. The first vacuum forming machine 19 vacuum-forms the product, and the first-stage telescopic plate 2 and the second-stage telescopic plate 3 move away from the first vacuum forming machine 19. One thermoforming unit 19 retracts to the side, returning to a state where the first-level telescopic plate 2 and the second-level telescopic plate 3 are both retracted and overlapped with the fixed plate 1. The second motor 16 drives the gear 15 to rotate. Since the second rack 14 is fixed on the frame, it drives the mounting plate 25 to move the Z-axis drive mechanism and the telescopic fork picking and placing mechanism to the top of the second feeding bin 22. Then, following the same working principle as above, the thermoformed products that have been thermoformed in the second thermoforming unit 20 are picked up and placed onto the belt conveyor 23. Then, the top product to be thermoformed in the second feeding bin 22 is picked up and placed onto the second thermoforming unit 20. Finally, the Y-axis drive mechanism drives the Z-axis drive mechanism and the telescopic fork picking and placing mechanism back to the top of the first feeding bin 21, returning to the initial state. This cycle is repeated.

[0046] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A telescopic fork loading and unloading device for use in a vacuum forming machine, characterized in that, include: The telescopic fork loading and unloading mechanism includes a fixed plate, a primary telescopic plate slidably mounted on the lower end face of the fixed plate, a secondary telescopic plate slidably mounted on the lower end face of the primary telescopic plate, a suction component mounted on the lower end face of the secondary telescopic plate, a first telescopic drive component, and a second telescopic drive component. The length directions of the fixed plate, the primary telescopic plate, and the secondary telescopic plate are all arranged along the X-axis. The first telescopic drive component drives the primary telescopic plate to reciprocate relative to the fixed plate along the X-axis direction, and the second telescopic drive component drives the secondary telescopic plate to reciprocate relative to the primary telescopic plate along the X-axis direction. The Z-axis drive mechanism drives the telescopic fork pick-and-place mechanism to rise and fall vertically along the Z-axis direction. The Y-axis drive mechanism drives the Z-axis drive mechanism to reciprocate and translate along the Y-axis direction.

2. The telescopic fork loading and unloading device for use in a vacuum forming machine according to claim 1, characterized in that: The fixed plate and the first-stage telescopic plate are slidably assembled via a first linear guide rail module, and the first-stage telescopic plate and the second-stage telescopic plate are slidably assembled via a second linear guide rail module. The first telescopic drive assembly includes a driving synchronous pulley, a driven synchronous pulley, multiple tension pulleys, a double-toothed synchronous belt sleeved on the multiple synchronous pulleys and tension pulleys, a first rack fixedly installed on the top surface of the first-stage telescopic plate, and a first drive component that drives the driving synchronous pulley to rotate; the first rack meshes with the double-toothed synchronous belt. The second telescopic drive assembly includes a first-side drive module that drives the secondary telescopic plate to move along the X-axis towards a first side, and a second-side drive module that drives the secondary telescopic plate to move along the X-axis towards a second side opposite to the first side. The first-side drive module includes a first synchronous belt and a first synchronous pulley mounted on the first side end of the primary telescopic plate. One end of the first synchronous belt is fixed to the second side end of the bottom surface of the fixed plate, and after passing around the first synchronous pulley, the other end is fixed to the second side end of the top surface of the secondary telescopic plate. The second-side drive module includes a second synchronous belt and a second synchronous pulley mounted on the second side end of the primary telescopic plate. One end of the second synchronous belt is fixed to the first side end of the bottom surface of the fixed plate, and after passing around the second synchronous pulley and engaging, the other end is fixed to the first side end of the top surface of the secondary telescopic plate.

3. The telescopic fork loading and unloading device for use in a vacuum forming machine according to claim 2, characterized in that: The fixing plate has a notch in the middle for the double-sided toothed synchronous belt to pass through and mesh with the first rack. The body of the double-sided toothed synchronous belt that rotates to the notch and meshes with the first rack is in a horizontal straight line. The suction component is a vacuum suction cup component.

4. The telescopic fork loading and unloading device for use in a vacuum forming machine according to claim 2, characterized in that: The first linear guide module is a first roller linear guide, including multiple first rollers fixed to the lower end face of the fixed plate and a pair of parallel first linear guides fixed to the top surface of the first-stage telescopic plate. The multiple first rollers slide in cooperation with the pair of first linear guides. The second linear guide module is a second roller linear guide, including multiple second rollers fixed on the lower end face of the first-stage telescopic plate and a pair of parallel second linear guides fixed on the top surface of the second-stage telescopic plate. The multiple second rollers slide in cooperation with the pair of second linear guides.

5. The telescopic fork loading and unloading device for use in a vacuum forming machine according to claim 1, characterized in that: The Z-axis drive mechanism includes a Z-axis drive component mounted on a mounting plate and a guide assembly for guiding the lifting and lowering of the telescopic fork pick-up and place mechanism. The telescopic fork pick-up and place mechanism is mounted on the movable part of the Z-axis drive component.

6. A telescopic fork loading and unloading device for use in a vacuum forming machine according to claim 5, characterized in that: The guide assembly includes a flange-type linear bearing fixed to the mounting plate and a guide rod sleeved in the flange-type linear bearing, with one end of the guide rod fixed to the top surface of the fixed plate; The fixing plate is fixedly installed on the movable part of the Z-axis drive component.

7. The telescopic fork loading and unloading device for use in a vacuum forming machine according to claim 1, characterized in that: The Y-axis drive mechanism includes a third linear guide module and a second rack mounted on the frame and arranged along the Y-axis in the length direction, a gear meshing with the second rack, and a second drive component that drives the gear to rotate. The second drive component is mounted on the mounting plate. The third linear guide module includes multiple sliders fixed to the lower end face of the mounting plate and a pair of parallel third linear guides fixed to the frame. The multiple sliders slide in cooperation with the pair of third linear guides.

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