Automatic tray loading and unloading push-pull device

Abstract

The utility model provides a kind of tray automatic loading and unloading push-pull device, comprising: guide wheel set, push-pull assembly and push-pull head.The guide wheel set includes: unhook guide rail and the reverse guide rail rotationally connected with unhook guide rail.The unhook guide rail includes the main movement guide rail being set along tray movement direction, and the main movement guide is equipped with arc convex guide rail.The reverse guide rail includes: the first support plate rotationally connected with the side wall of main movement guide rail, and the first support plate top is equipped with first guide plate and second section.The push-pull head includes: the sleeve seat of being set in sleeve shaft outside, and the sleeve seat is equipped with limit board.The sleeve shaft is fixedly connected with push-pull plate, and the push-pull plate one end is push end, and the other end is pull end.The movement end of push-pull assembly is fixed with sleeve seat.The utility model can complete two actions of feeding and discharging by using a set of device, structure is simple, can significantly reduce manufacturing cost, and hardly involves modification to tray structure.

Description

Technical Field

[0001] This utility model belongs to the field of material filling technology, specifically relating to an automatic loading and unloading push-pull device for material trays. Background Technology

[0002] In existing technologies, materials are often transferred using a material tray. During the transfer process, since the tray typically moves laterally and both the tray and the material are relatively large, at least two mechanisms are required when using a traditional hydraulic system to push and pull the material, thereby achieving feeding and discharging. Using traditional screw or lead screw reciprocating mechanisms, where the screw or lead screw relies on threaded force to push or pull the tray, is prone to damage, resulting in a short service life and failing to meet the requirements of industrial production.

[0003] Other mechanisms, such as adding drive units and guide rails outside the material tray, require significant modifications to the material tray. Since the material tray is often highly compatible with the feeding device, adding a drive unit may cause incompatibility, leading to feeding problems. This is especially true for some feeding devices, such as industrial furnaces, which cannot have in-furnace feeding mechanisms, thus making it impossible to install a drive mechanism on the material tray.

[0004] Therefore, two separate mechanisms are generally needed to push and pull the material, thereby achieving feeding and discharging by pushing and pulling the material tray.

[0005] This method requires two separate mechanisms and drive systems to perform push and pull actions to complete the feeding and discharging, resulting in a long cycle and high manufacturing costs. This mechanism, however, can complete both feeding and discharging actions with a single unit, simplifying the structure and reducing manufacturing costs. In special cases, such as industrial furnaces, where an in-furnace mechanism is not feasible and external mechanisms are required for feeding and discharging, this automatic loading and unloading push-pull mechanism allows for loading and unloading of material trays outside the furnace. Utility Model Content

[0006] This utility model addresses the shortcomings of existing technologies by providing an automatic loading and unloading push-pull device for material trays, comprising: a guide rail wheel assembly, a push-pull assembly, and a push-pull head.

[0007] The guide rail wheel assembly includes a disengagement guide rail and a reversing guide rail rotatably connected to the disengagement guide rail. The disengagement guide rail includes a main motion guide rail arranged along the material tray's movement direction. The main motion guide rail has an arc-shaped surface at a position in front of the material tray's loading position along the material tray's pull-out direction. The reversing guide rail includes a first support plate rotatably connected to the side wall of the main motion guide rail. The first support plate has a first guide plate at its top. The first guide plate is arranged along the top surface of the main motion guide rail, and in the corresponding section of the material tray's movement, it is a horizontal section parallel to the main motion guide rail. This horizontal section connects to a second section behind the material tray's loading position and terminates at a predetermined position behind the material tray's feeding position. The second section slopes downwards to contact the main motion guide rail. The rotatable connection mechanism between the support plate and the main motion guide rail is located away from the second section.

[0008] The push-pull head includes: a sleeve seat fitted around the outside of the rotating shaft, the sleeve seat being rotatable along the rotating shaft, and a limiting plate provided on the sleeve seat. The rotating shaft is fixedly connected to a push-pull plate, one end of which is a pushing end and the other end is a pulling end, with the pushing end having a greater mass than the pulling end. A roller is rotatably connected at the bottom corner of the pushing end, and a corresponding first limiting baffle is provided on the side near the limiting plate, while a pushing plate corresponding to the sidewall of the material tray is provided on the side opposite to the limiting plate. A corresponding second limiting baffle is provided on the side of the pulling end near the limiting plate, and a pulling head corresponding to the bottom pulling groove of the material tray is provided on the side opposite to the limiting plate. The top surface of the pulling head is an arc-shaped surface that fits into the bottom pulling groove of the material tray.

[0009] The moving end of the push-pull assembly is fixed to the sleeve seat, and passes through the sleeve seat to drive the push-pull head to move along the guide rail wheel set.

[0010] Furthermore, the push-pull assembly includes a roller chain and a drive mechanism. The drive output end of the drive mechanism is fixedly connected to a sprocket, and the teeth of the sprocket engage with the gaps between the rollers of the roller chain, forming a toothed connection. The end of the roller chain near the sleeve seat is fixedly connected to the sleeve seat via a chain connecting plate.

[0011] Furthermore, the roller chain includes: several rollers, the roller shafts of adjacent rollers are rotatably connected to alternating inner and outer connecting plates; the inner connecting plate is provided with an outwardly protruding limiting post, and the bottom of the outer connecting plate is fixed with a rotation limiting plate. When the roller chain is in a straight state, adjacent rotation limiting plates press against each other and press against the bottom of the limiting post.

[0012] A second guide plate is fixed to the outer side of the roller near the sleeve seat. The second guide plate is fixedly connected to the chain connecting plate. When the roller chain is in a straight state, the corresponding position of the second guide plate abuts against the adjacent rotation limit plate.

[0013] Furthermore, the sleeve seat is fixedly connected to the chain connecting plate, and the chain connecting plate is detachably fixedly connected to the second guide plate.

[0014] Furthermore, the roller has a concave surface that matches the roller chain guide rail of the chain box. The roller chain guide rail extends from the side of the sprocket facing away from the material tray into the interior of the chain box, and the portion inside the chain box is designed in a disc or disc-like shape along the rotation direction of the roller chain. The end of the roller chain facing away from the material tray is housed inside the chain box.

[0015] Furthermore, the transmission chain is meshed with at least two sets of transmission rollers.

[0016] Furthermore, the rotating shaft is fixedly connected by a positioning sleeve push-pull plate.

[0017] Furthermore, the main motion guide rail sidewall is provided with a second rotating shaft at a preset position, and the first support plate is provided with a guide sleeve at a position corresponding to the rotating shaft. The second rotating shaft is inserted into the guide sleeve and rotatably connected to the guide sleeve.

[0018] Furthermore, the main motion guide rail is fixedly connected to the unhooking assembly via a positioning plate near the material tray feeding position. The unhooking assembly includes a second support plate fixed to the side wall of the main motion guide rail, and a pressure plate is connected to the top of the second support plate. The bottom surface of the pressure plate is located 1-10mm above the top surface of the limiting plate when the push-pull head is in the horizontal section.

[0019] Furthermore, the pressure plate at least covers the entire section of the horizontal segment near the feed position of the material tray.

[0020] Furthermore, the portion of the sleeve shaft located outside the push-pull plate is fixed to the inner ring of the first bearing, and the top surface of the outer ring of the first bearing matches the bottom surface of the pressure plate.

[0021] This utility model has at least one of the following advantages: 1. This utility model can complete both feeding and discharging actions with only one set of equipment. It has a simple structure and can significantly reduce manufacturing costs.

[0022] 2. This utility model involves almost no modification to the structure of the material tray. It only requires that the bottom of the material tray has a groove that can be pulled, or if necessary, a pulling groove can be added at the corresponding position at the bottom of the material tray. This does not affect the material tray entering and exiting the industrial furnace. Attached Figure Description

[0023] Figure 1 The figure shown is a side view of the overall structure of this utility model; Figure 2 The figure shown is a top view of the overall structure of this utility model; Figure 3The diagram shown is a schematic of the chain box and drive mechanism of this utility model. Figure 4 The figure shown is a side view of the roller chain structure of this utility model; Figure 5 The diagram shown is a top view of the roller chain structure of this utility model. Figure 6 The diagram shown is a schematic of the push-pull head of this utility model in the pulled state. Figure 7 The diagram shown is a schematic diagram of the push-pull head of this utility model in the pushing state. Figure 8 The figure shown is a side view of the unhooking assembly of this utility model. Figure 9 The diagram shown is a schematic of the unhooking guide rail structure of this utility model; Figure 10 The diagram shown is a schematic of the reversing guide rail structure of this utility model; Figure 11 The diagram shown illustrates the movement changes of the push-pull head of this utility model.

[0024] In the diagram: 1. Material tray; 2. Guide rail wheel assembly; 3. Push-pull assembly; 4. Push-pull head; 401. Push-pull plate; 402. Pushing end; 403. Pulling end; 404. Push plate; 405. First limit baffle; 406. Second limit baffle; 407. Pulling head; 5. Roller; 6. Limiting plate; 7. Chain connecting plate; 8. Sleeve seat; 9. Sleeve shaft; 10. First bearing; 11. Positioning sleeve; 12. Second guide plate; 13. Transmission chain; 130 1. Roller; 1302. Inner connecting plate; 1303. Outer connecting plate; 1304. Rotation limit plate; 1305. Limiting post; 14. Positioning plate; 15. Second rotating shaft; 16. Unhooking guide rail; 1601. Main motion guide rail; 1602. Arc surface; 17. Pressure plate; 18. Second support plate; 19. First support plate; 20. First guide plate; 21. Guide sleeve; 22. Drive mechanism; 2201. Sprocket; 23. Chain box; 24. Unhooking assembly. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0026] This utility model provides an example of an automatic loading and unloading push-pull device for material trays, such as... Figure 1 As shown, it includes: guide rail wheel assembly 2, push-pull assembly 3, and push-pull head 4.

[0027] like Figure 1 , Figure 2 , Figure 10 As shown, the guide rail wheel assembly 2 includes: a disengagement guide rail 16 and a reversing guide rail rotatably connected to the disengagement guide rail 16. The disengagement guide rail 16 includes a main motion guide rail 1601 arranged along the movement direction of the material tray 1. The main motion guide rail 1601 has an arc-shaped surface 1602 at a position in front of the material tray 1 loading position along the pull-out direction of the material tray 1. The reversing guide rail includes: a first support plate 19 rotatably connected to the side wall of the main motion guide rail 1601. The top of the first support plate 19 has a first guide plate 20. The first guide plate 20 is arranged along the top surface direction of the main motion guide rail 1601, and in the corresponding section of the material tray 1 movement, it is a horizontal section 2001 parallel to the main motion guide rail 1601. The horizontal section 2001 connects to a second section 2002 behind the material tray 1 loading position and ends at a preset position behind the material tray 1 feeding position. The second section 2002 is inclined downward to contact the main motion guide rail 1601. The rotational connection mechanism between the support plate 19 and the main motion guide rail 1601 is located at a position away from the second section 2002.

[0028] like Figure 2 and Figure 6 As shown, the push-pull head 4 includes: a sleeve seat 8 sleeved outside the sleeve shaft 9, the sleeve seat 8 being rotatably disposed along the sleeve shaft 9, and a limiting plate 6 provided on the sleeve seat 8. The sleeve shaft 9 is fixedly connected to the push-pull plate 401, one end of the push-pull plate 401 being a pushing end 402 and the other end being a pulling end 403, and the mass of the pushing end 402 being greater than that of the pulling end 403. A roller 5 is rotatably connected at the bottom corner of the pushing end 402, and a corresponding first limiting baffle 405 is provided on the side near the limiting plate 6, and a pushing plate 404 corresponding to the side wall of the material tray 1 is provided on the side opposite to the limiting plate 6. A corresponding second limiting baffle 406 is provided on the side of the pulling end 403 near the limiting plate 6, and a pulling head 407 corresponding to the bottom pulling groove of the material tray 1 is provided on the side opposite to the limiting plate 6. The top surface of the pulling head 407 is an arc-shaped surface that fits into the bottom pulling groove of the material tray 1.

[0029] The moving end of the push-pull assembly 3 is fixed to the sleeve seat 8, and passes through the sleeve seat 8 to drive the push-pull head 4 to move along the guide wheel set 2.

[0030] Combination Figure 11 The process of using this device is as follows: After material tray 1 is loaded or replaced with a new material tray 1, the material tray 1 is pushed to feed material. At this time, the push-pull assembly 3 moves towards... Figure 1 The left side pushes the sleeve seat 8 to move, thereby driving the sleeve shaft 9 to move to the left, which in turn pushes the push-pull plate 401 to move to the left. During the leftward movement of the push-pull plate 401, the roller 5 first moves along the top surface of the main motion guide rail 1601, as shown. Figure 11At position C, as shown, the push-pull plate 401 tends to flatten, with the pushing end 402 at the bottom and the pulling end 403 at the top. Then, the roller 5 gradually moves upward along the second section 2002, thereby lifting the pushing end 402 and lowering the pulling end 403. When the roller 5 is on the horizontal section 2001, the pushing end 402 is raised to the top, at which point the pushing plate 404 faces the side wall of the tray 1, and the first limiting baffle 405 presses against the limiting plate 6. Figure 11 Position D is shown. On one hand, the limiting plate 6 restricts the push end 402 from continuing to rise and rotate; on the other hand, it also provides force after the push plate 404 presses against the side wall of the material tray 1. Then, as... Figure 7 As shown, the push-pull assembly 3 continues to push the push-pull head 4 to the left. At this time, the push plate 404 presses against the side wall of the tray 1 and applies a force to the tray 1 to the left through the limitation of the limiting plate 6, thereby pushing the tray 1 to the left and realizing the feeding action. During the movement, the push end 402 is continuously subjected to force, so it can maintain the lifted and pushed state.

[0031] When the material tray 1 reaches the feeding position, the push-pull component 3 is pulled back to the right appropriately, so that the push end 402 is no longer subject to the friction force from the side wall of the material tray 1, and thus it undergoes a downward action under its own weight. The push end 402 gradually moves down to the natural state. Since the mass of the push end 402 is greater than that of the pull end 403, the push end 402 sinks while the pull end 403 rises in the natural state.

[0032] When the tray 1 needs to be pushed out, the push-pull assembly 3 pushes the push-pull head 4 to the left. At this time, because the pushing end 402 sinks and the pulling end 403 rises, the pushing end 402 no longer contacts the side wall of the tray 1, so the pushing action will not occur again. During the pushing process of the push-pull assembly 3, the raised pulling end 403's pulling head 407... Figure 6 As shown, it gradually engages with the bottom pull groove of the material tray 1. At this time, the pull head 407, engaged with the bottom pull groove of the material tray 1, can pull the material tray to the right, and the second limit baffle 406 presses against the limit plate 6, as shown. Figure 11 Position A is shown. On one hand, the limiting plate 6 restricts the pulling end 403 from continuing to rise and rotate; on the other hand, it also provides force after the pulling head 407 is engaged in the bottom pulling groove of the material tray 1. Then, the push-pull assembly 3 pulls the push-pull head 4 to the right, thereby pulling the material tray 1 out of the industrial furnace. Afterwards, when the roller 5 moves to the position of the arc surface 1602, it moves upward along the arc surface 1602 to the top surface of the main motion guide rail 1601, thereby forcing the pulling end 403 to press down, thereby forcing the pulling head 407 to disengage from the bottom pulling groove of the material tray. The material tray stops at the feeding position or is replaced by a feeding or replacement action, such as... Figure 11Position B is shown. Roller 5 continues to move to the right, until it reaches the arched second section 2002, then moves to the right side of the reversing guide rail. After roller 5 reaches the right side of the reversing guide rail, the arched second section 2002 falls back to contact the main motion guide rail 1601, as shown. Figure 11 Position C is shown.

[0033] By repeating the above actions of pushing and pulling the material tray 1, the feeding and discharging actions can be completed with only one set of devices. Moreover, the structure of this utility model is simple, and compared with the prior art which requires two sets of pushing mechanisms to achieve the pushing and pulling action of the material tray 1, the manufacturing cost can be significantly reduced.

[0034] Please note that the above left and right movements are based on Figure 1 In the example state, moving to the left mainly indicates pushing the material tray 1 towards the feeding device, while moving to the right mainly indicates pulling the material tray 1 out of the feeding device.

[0035] Furthermore, this utility model involves almost no modification to the structure of the material tray 1. It only requires that the bottom of the material tray 1 has a groove that can be pulled, or if necessary, a pulling groove can be added at the corresponding position at the bottom of the material tray 1, which does not affect the material tray entering and exiting the industrial furnace.

[0036] This utility model provides an exemplary push-pull component 3, such as... Figures 2 to 5 As shown, it includes: a roller chain 13 and a drive mechanism 22; the drive output end of the drive mechanism 22 is fixedly connected to a sprocket 2201, and the teeth of the sprocket 2201 are engaged in the gap between the rollers of the roller chain 13 to form a toothed relationship; the end of the roller chain 13 near the sleeve seat 8 is fixedly connected to the sleeve seat 8 through a chain connecting plate 7.

[0037] The device drives the gear teeth to rotate through the drive unit, thereby driving the roller chain 13 to move. At this time, by controlling the direction of the drive unit, the push-pull head 4 can be driven to move back and forth.

[0038] This utility model provides an exemplary embodiment of the roller chain 13, such as... Figures 2 to 5 As shown, it includes: several rollers 1301, the roller shafts of adjacent rollers 1301 are rotatably connected to alternating inner connecting plates 1302 and outer connecting plates 1303; the inner connecting plate 1302 is provided with an outwardly protruding limiting post 1305, and the bottom of the outer connecting plate 1303 is fixed with a rotation limiting plate 1304. When the roller chain 13 is in a straight state, adjacent rotation limiting plates 1304 press against each other and press against the bottom of the limiting post 1305.

[0039] A second guide plate 12 is fixed to the outer side of the roller 1301 near the sleeve seat 8. The second guide plate 12 is fixedly connected to the chain connecting plate 7. When the roller chain 13 is in a straight state, the second guide plate 12 presses against the adjacent rotation limit plate 1304 at the corresponding position.

[0040] Compared to the traditional roller chain 13, this invention features an outwardly protruding limiting post 1305 on the inner connecting plate 1302 and a rotating limiting plate 1304 fixed at the bottom of the outer connecting plate 1303. This design prevents the roller chain 13 from bending upwards when it is in a straight state due to the mutual pressure of the rotating limiting plates 1304 and the limiting effect of the limiting post 1305. During leftward movement, the rotating limiting plates 1304 exert mutual pressure, preventing the roller chain 13 from bending downwards even when suspended. This effectively transforms the rotational force provided by the drive mechanism 22 into a stable linear reciprocating motion. Furthermore, the roller chain 13 remains suspended and straight within a certain distance, even without a guide rail. During rightward movement, the roller chain 13 is straightened by the tension at both ends, effectively transmitting force.

[0041] Since it is not easy to install the rotation limiting plate 1304 at the connection position with the sleeve seat 8, the present invention adds a second guide plate 12, so that the part of the roller chain 13 connected to the sleeve seat 8 is in an unbendable state, and can form a pressure limiting structure with the adjacent rotation limiting plate 1304.

[0042] This utility model provides an exemplary roller 1301, such as... Figures 3 to 5 As shown, the roller 1301 has a concave surface, which matches the roller chain guide rail of the chain box 23. The roller chain guide rail extends from the side of the sprocket 2201 facing away from the material tray 1 to the inside of the chain box 23, and the part inside the chain box 23 is designed in a disc or disc-like shape along the rotation direction of the roller chain 13. The end of the roller chain 13 facing away from the material tray 1 is stored inside the chain box 23.

[0043] This arrangement allows the roller chain 13 to be effectively housed inside the chain box 23 along the roller chain guide, saving space in the device.

[0044] This utility model provides an exemplary connection method between the sleeve base 8 and the second guide plate 12: the sleeve base 8 is fixedly connected to the chain connecting plate 7, and the chain connecting plate 7 is detachably fixedly connected to the second guide plate 12. This method allows for the replacement of the push-pull head 4 corresponding to the material tray 1 or facilitates maintenance as needed, through the detachable fixed connection between the chain connecting plate 7 and the second guide plate 12 (such as bolt fixing, slot engagement with screws or pins, etc.).

[0045] This utility model provides an exemplary method for fixing the rotating shaft 9, such as... Figure 2 As shown, the rotating shaft 9 is fixedly connected to the push-pull plate 401 via a positioning sleeve 11. The positioning sleeve 11 serves to position and distribute stress, thereby reducing the possibility of the rotating shaft 9 breaking under load and improving the system's stability and durability.

[0046] This utility model provides an exemplary method for rotating the first support plate 19 and the main motion guide rail 1601, such as... Figure 9 and Figure 10 As shown, the main motion guide rail 1601 has a second rotating shaft 15 at a preset position on its side wall, and the first support plate 19 has a guide sleeve 21 at a position corresponding to the rotating shaft 15. The second rotating shaft 15 is inserted into the guide sleeve 21 and is rotatably connected to the guide sleeve 21.

[0047] This utility model provides an example of an auxiliary unhooking device, such as... Figure 1 , Figure 8 , Figure 9 As shown, the main motion guide rail 1601 is fixedly connected to the unhooking assembly 24 via a positioning plate 14 near the feeding position of the material tray 1. The unhooking assembly 24 includes a second support plate 18 fixed to the side wall of the main motion guide rail 1601. A pressure plate 17 is connected to the top of the second support plate 18. The bottom surface of the pressure plate 17 is located 1-10mm above the top surface of the limiting plate 6 when the push-pull head 4 is located on the horizontal section 2001.

[0048] When the pusher head 1 moves, due to its large weight and the relatively low position of the sleeve seat 8 relative to the pusher plate 404, when the pusher head 4 is subjected to a leftward force, another movement may occur: when the weight of the pusher head 1 makes it difficult to push, the pusher head 4 may be forced to move upward. This movement not only fails to achieve the purpose of pushing the pusher head 1 but also easily damages the components. After installing the release assembly 24, when the pusher head 4 pushes the pusher head 1 to move, when the pusher head 4 is forced to move upward, the limit plate 6 will press against the bottom surface of the pressure plate 17, thus preventing it from continuing to move upward. This forces the pusher head 4 to only push the pusher head 1 to the left, avoiding the upward tilting action.

[0049] Similarly, during the process of the push-pull head 4 being pulled back and moving along the arc surface 1602 to disengage from the bottom pull groove of the material tray 1, the pressure plate 17, through its limiting effect on the limiting plate 6, prevents the sleeve seat 8 from tilting upwards under force, thereby avoiding the problem of component damage caused by the tilting action.

[0050] This utility model provides an exemplary pressure plate 17, such as... Figure 1As shown, the pressure plate 17 at least covers the entire section of the horizontal section 2001 near the feeding position of the material tray 1. This arrangement ensures that the push-pull head 4 is protected by the pressure plate 17 when it performs a pushing action.

[0051] This utility model provides an exemplary rotating shaft 9, such as... Figure 2 As shown, the portion of the rotating shaft 9 located outside the push-pull plate 401 is fixed to the inner ring of the first bearing 10, and the top surface of the outer ring of the first bearing 10 matches the bottom surface of the pressure plate 17. This arrangement, by pressing the outer ring of the first bearing 10 against the bottom surface of the pressure plate 17, changes the original friction limit to a rolling limit, greatly protecting the pressure plate 17 and the limiting plate 6.

[0052] It should be noted and understood that various modifications and improvements can be made to the present invention as described in the above description without departing from the spirit and scope of the claims. Therefore, the scope of the claimed technical solutions is not limited to any specific exemplary teachings given.

Claims

1. An automatic loading and unloading push-pull device for material trays, characterized in that, include: Guide rail wheel assembly (2), push-pull assembly (3) and push-pull head (4); The guide rail wheel assembly (2) includes: a disengagement guide rail (16) and a reversing guide rail rotatably connected to the disengagement guide rail (16); the disengagement guide rail (16) includes a main motion guide rail (1601) arranged along the movement direction of the material tray (1), and the main motion guide rail (1601) is provided with an arc-shaped surface (1602) at the position in front of the material tray (1) loading position along the pull-out direction of the material tray (1); the reversing guide rail includes: a first support plate (19) rotatably connected to the side wall of the main motion guide rail (1601), and a first guide plate (20) is provided on the top of the first support plate (19); the first guide plate (20) 0) It is set along the top surface of the main motion guide rail (1601), and the corresponding section of the material tray (1) is a horizontal section (2001) parallel to the main motion guide rail (1601). The horizontal section (2001) is connected to the second section (2002) behind the material loading position of the material tray (1) and ends at a preset position behind the material feeding position of the material tray (1). The second section (2002) is inclined downward to contact the main motion guide rail (1601). The rotational connection mechanism between the support plate (19) and the main motion guide rail (1601) is set at a position away from the second section (2002). The push-pull head (4) includes: a sleeve seat (8) sleeved on the outside of the sleeve shaft (9), the sleeve seat (8) being rotatably disposed along the sleeve shaft (9), and a limiting plate (6) provided on the sleeve seat (8); the sleeve shaft (9) being fixedly connected to the push-pull plate (401), one end of the push-pull plate (401) being a pushing end (402), and the other end being a pulling end (403), and the mass of the pushing end (402) being greater than that of the pulling end (403); a roller (5) is rotatably connected at the bottom corner of the pushing end (402). Furthermore, a first limiting baffle (405) is provided on the side near the limiting plate (6), and a push plate (404) corresponding to the side wall of the tray (1) is provided on the side opposite to the limiting plate (6); a second limiting baffle (406) is provided on the side near the limiting plate (6), and a pull head (407) corresponding to the bottom pull groove of the tray (1) is provided on the side opposite to the limiting plate (6); the top surface of the pull head (407) is an arc-shaped surface that fits into the bottom pull groove of the tray (1); The moving end of the push-pull assembly (3) is fixed to the sleeve seat (8), and the push-pull head (4) moves along the guide wheel set (2) by passing through the sleeve seat (8).

2. The automatic loading and unloading push-pull device for material trays according to claim 1, characterized in that, The push-pull assembly (3) includes a roller chain (13) and a drive mechanism (22); the drive output end of the drive mechanism (22) is fixedly connected to the sprocket (2201), and the teeth of the sprocket (2201) are engaged in the gap between the rollers of the roller chain (13) to form a toothed relationship; the end of the roller chain (13) near the sleeve seat (8) is fixedly connected to the sleeve seat (8) through the chain connecting plate (7).

3. The automatic loading and unloading push-pull device for material trays according to claim 2, characterized in that, The roller chain (13) includes: several rollers (1301), the rollers of adjacent rollers (1301) are rotatably connected to alternating inner connecting plates (1302) and outer connecting plates (1303); the inner connecting plate (1302) is provided with an outwardly protruding limiting post (1305), and the bottom of the outer connecting plate (1303) is fixed with a rotation limiting plate (1304). When the roller chain (13) is in a straight state, adjacent rotation limiting plates (1304) press against each other and press against the bottom of the limiting post (1305); A second guide plate (12) is fixed on the outside of the roller (1301) near the sleeve seat (8). The second guide plate (12) is fixedly connected to the chain connecting plate (7). When the roller chain (13) is in a straight state, the second guide plate (12) presses against the adjacent rotation limit plate (1304) at the corresponding position.

4. The automatic loading and unloading push-pull device for material trays according to claim 3, characterized in that, The sleeve seat (8) is fixedly connected to the chain connecting plate (7), and the chain connecting plate (7) is detachably fixedly connected to the second guide plate (12).

5. The automatic loading and unloading push-pull device for material trays according to claim 3, characterized in that, The roller (1301) has a concave surface, and the concave surface of the roller (1301) matches the roller chain guide rail of the chain box (23). The roller chain guide rail extends from the side of the sprocket (2201) facing away from the material tray (1) to the inside of the chain box (23), and the part inside the chain box (23) is designed in a disc or disc-like shape along the rotation direction of the roller chain (13). The end of the roller chain (13) facing away from the material tray (1) is stored inside the chain box (23).

6. The automatic loading and unloading push-pull device for material trays according to claim 1, characterized in that, The rotating shaft (9) is fixedly connected to the push-pull plate (401) through the positioning sleeve (11).

7. The automatic loading and unloading push-pull device for material trays according to claim 1, characterized in that, The main motion guide rail (1601) has a second rotating shaft (15) at a preset position on its side wall, and the first support plate (19) has a guide sleeve (21) at a position corresponding to the rotating shaft (15); the second rotating shaft (15) is inserted into the guide sleeve (21) and is rotatably connected to the guide sleeve (21).

8. The automatic loading and unloading push-pull device for material trays according to claim 1, characterized in that, The main motion guide rail (1601) is fixedly connected to the unhooking assembly (24) via a positioning plate (14) near the feeding position of the material tray (1); the unhooking assembly (24) includes a second support plate (18) fixed to the side wall of the main motion guide rail (1601), and a pressure plate (17) is connected to the top of the second support plate (18). The bottom surface of the pressure plate (17) is located 1-10mm above the top surface of the limiting plate (6) when the push-pull head (4) is located on the horizontal section (2001).

9. The automatic loading and unloading push-pull device for material trays according to claim 8, characterized in that, The pressure plate (17) covers at least the entire section of the horizontal section (2001) near the feeding position of the feed tray (1).

10. The automatic loading and unloading push-pull device for material trays according to claim 8, characterized in that, The portion of the rotating shaft (9) located outside the push-pull plate (401) is fixed to the inner ring of the first bearing (10), and the top surface of the outer ring of the first bearing (10) matches the bottom surface of the pressure plate (17).

Images