A stacking device for a biodegradable and environmentally friendly lunch box production line

Abstract

The present invention discloses a stacking device for a production line of biodegradable and environmentally friendly lunch boxes, comprising four center plates, which are divided into two groups. A top plate is fixedly connected between the center plates in each group. A first hydraulic rod is fixedly connected to the lower side of the top plate. The output end of the first hydraulic rod is fixedly connected to a center box. A movable groove is provided on the front side of the center box. A movable plate is provided in the movable groove. The movable plate passes through the movable groove. A circular groove is provided on both sides of the movable groove. The movable rod is located in the movable groove and fixedly sleeved with a square rod. The present invention moves the entire device to the lower side of the environmentally friendly lunch box transportation line, so that the environmentally friendly lunch boxes can be perfectly moved between the two center boxes. Then, under the action of the movable rod and the movable plate, when the environmentally friendly lunch boxes fall freely between the center boxes, they fall on the upper side of the movable plate and move along with the movable plate, thereby completing the stacking operation of the environmentally friendly lunch boxes.

Description

Technical Field

[0001] The present invention relates to the technical field of environmentally friendly lunch box production, and in particular to a stacking device for a production line of degradable environmentally friendly lunch boxes. Background Art

[0002] Environmentally friendly lunch boxes are food containers made of materials that are harmless to the human body, whose production process does not pollute the environment, whose product quality fully meets national food hygiene requirements, and which are easy to recycle, dispose of, or consume after use. Degradable environmentally friendly lunch boxes refer to those that can undergo biochemical reactions under the action of microorganisms (bacteria, mold, algae) and enzymes in the natural environment, causing changes in appearance from mold to internal quality, ultimately forming carbon dioxide and water.

[0003] In the production process of degradable and environmentally friendly lunch boxes, especially on the production line of degradable and environmentally friendly lunch boxes, the produced degradable and environmentally friendly lunch boxes are often stacked manually to facilitate subsequent mobile transportation operations. However, the manual stacking operation is time-consuming and labor-intensive, and has low work efficiency. It requires the cooperation of multiple people to keep up with machine production, and long-term work is very likely to cause fatigue, which in turn makes it impossible to remove the environmentally friendly lunch boxes with average production quality, thereby reducing the production qualification rate of the degradable and environmentally friendly lunch boxes. Therefore, a stacking device for a degradable and environmentally friendly lunch box production line is provided. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a stacking device for a production line of degradable and environmentally friendly lunch boxes.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A stacking device for a production line of degradable and environmentally friendly lunch boxes comprises four center plates, which are divided into two groups. The center plates in each group are fixedly connected to the same top plate, the lower side of the top plate is fixedly connected to a first hydraulic rod, the output end of the first hydraulic rod is fixedly connected to a center box, the front side of the center box is provided with a movable groove, the movable groove is provided with a movable rod, the movable rod passes through the movable groove, and both sides of the movable groove are provided with a circular groove, the movable rod is located in the movable groove and is fixedly sleeved with a square rod, the square rod and the circular groove are slidably connected, a positioning rod is fixedly connected in the movable groove, the outer rotating sleeve of the positioning rod is provided with two sleeves, the outer rotating sleeve of the square rod is provided with two rotating cylinders, the two rotating cylinders are connected by a second spring and a sleeve, the side of the movable rod away from the center box is fixedly connected to the movable plate, and a power device for the movable rod is provided in the center box.

[0007] Preferably, the power device includes two fixed plates symmetrically fixedly connected on the outside of the center box, the two fixed plates are rotated with a same power rod, both ends of the power rod are fixedly connected with a first gear, the side of the four center plates close to the center box is fixedly connected with a first rack, the first gear and the first rack are meshed with each other, a driven rod is rotatably connected in the center box, the driven rod is connected to the power rod through a first belt, the outer fixed sleeve of the driven rod is provided with a rotating plate, the outer side of the rotating plate is provided with a contact groove, the sliding sleeve in the contact groove is provided with a contact rod, the contact rod and the moving rod are arranged opposite to each other, the contact rod is connected to the bottom of the moving groove through a first spring, and a clamping device is provided on the upper side of the moving plate.

[0008] Preferably, the inner sides of the four central plates are each provided with a slide groove, a slider is slidably connected in the slide groove, and the slider is fixedly connected to the central box.

[0009] The two gears are connected with each other by a spring, and the two gears are connected with each other by a spring, and the two gears are connected with each other by a spring.

[0010] Preferably, the rejection device includes a square cylinder arranged between two center boxes, two sliding rods are provided in the sliding sleeve inside the square cylinder, the two sliding rods are respectively fixedly connected to the center boxes, the same third spring is fixedly connected between the two sliding rods, a second hydraulic rod is fixedly connected to the outer side of the square cylinder, the output end of the second hydraulic rod is fixedly connected to a rejection plate, the rejection plate is arranged between the movable plates, and a control device of the second hydraulic rod is provided on the upper side of the movable plate.

[0011] Preferably, the control device includes a plurality of control grooves evenly arranged on the upper side of the movable plate, a control rod is provided in a sliding sleeve in the plurality of control grooves, the control rod is connected to the bottom of the control groove through a fourth spring, the end of the control rod away from the control groove is fixedly connected to the control plate, the control plates are abutted against each other, a switch groove is provided on the lower side of the control plate, a switch rod is provided in a threaded sleeve in the switch groove, two conductive plates are provided in the plurality of control grooves, one of the conductive plates is located at the bottom of the control groove and fixedly connected to the control groove, the other conductive plate is fixedly connected to the control rod, the two conductive plates, the switch rod and the second hydraulic rod are arranged relatively to each other.

[0012] Preferably, outer sides of the control plate and the stabilizing roller are both smooth.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. First, move the entire device to the lower side of the environmentally friendly lunch box transport line so that the environmentally friendly lunch boxes can be perfectly moved between the two center boxes. Then, under the action of the moving rod and the moving plate, when the environmentally friendly lunch boxes fall freely between the center boxes, they fall on the upper side of the moving plate and move with the moving plate, thereby completing the stacking operation of the environmentally friendly lunch boxes.

[0015] 2. During the movement of the movable plate, the upward movement speed of the center box is adjusted by adjusting the first hydraulic rod, thereby adjusting the stacking distance of the environmentally friendly lunch boxes. The spacing between all environmentally friendly lunch boxes is adjusted to a specific value as much as possible to ensure the tightness between the environmentally friendly lunch boxes and improve the stacking quality.

[0016] 3. During the stacking process, the clamping device ensures that the environmentally friendly lunch boxes and the movable plate are in close contact and connected together, further ensuring the stacking quality;

[0017] 4. During the stacking process, corresponding inspection operations can be performed on both sides of the environmentally friendly lunch boxes, and the environmentally friendly lunch boxes with poor quality can be automatically removed based on the quality of the inspection. The degree of automation and intelligence is high, which further ensures the stacking quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a stacking device for a biodegradable and environmentally friendly lunch box production line proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the connection between the center plate and the center box in a stacking device of a biodegradable and environmentally friendly lunch box production line proposed by the present invention;

[0020] Figure 3 This is a cross-sectional connection diagram of the center plate and center box in a stacking device of a biodegradable and environmentally friendly lunch box production line proposed by the present invention;

[0021] Figure 4 This is a partial cross-sectional connection diagram of a rotating plate in a stacking device of a biodegradable and environmentally friendly lunch box production line proposed by the present invention;

[0022] Figure 5 This is a schematic diagram of the internal connection of the moving trough in the stacking device of the biodegradable and environmentally friendly lunch box production line proposed by the present invention;

[0023] Figure 6 This is a schematic structural diagram of the zigzag groove in the stacking device of the biodegradable and environmentally friendly lunch box production line proposed by the present invention;

[0024] Figure 7 This is a schematic structural diagram of a clamping device in a stacking device of a biodegradable and environmentally friendly lunch box production line proposed by the present invention;

[0025] Figure 8 for Figure 7 A magnified view of the structure at point A;

[0026] Figure 9 for Figure 7 A magnified view of the structure at B in the middle;

[0027] Figure 10 This is a schematic diagram of the connection of the clamping device in the stacking device of the biodegradable and environmentally friendly lunch box production line proposed by the present invention from another angle;

[0028] Figure 11 This is a schematic structural diagram of a rejecting device in a stacking device of a biodegradable and environmentally friendly lunch box production line proposed by the present invention;

[0029] Figure 12 This is a schematic structural diagram of a control device in a stacking device of a biodegradable and environmentally friendly lunch box production line proposed by the present invention;

[0030] Figure 13 This is a cross-sectional connection diagram of a control slot in a stacking device of a biodegradable and environmentally friendly lunch box production line proposed by the present invention;

[0031] Figure 14 This is a schematic diagram of the circuit connections in the stacking device of a biodegradable and environmentally friendly lunch box production line proposed by the present invention.

[0032] In the figure: 1 center plate, 11 top plate, 12 first hydraulic rod, 13 center box, 14 fixed plate, 15 power rod, 16 first gear, 17 first rack, 18 slide, 19 first belt, 191 driven rod, 192 rotating plate, 193 slider, 194 contact rod, 195 contact groove, 196 first spring, 197 moving groove, 198 moving plate, 199 moving rod, 1991 circular groove, 1992 rotating cylinder, 1993 positioning rod, 1994 sleeve, 1995 square rod, 1996 second spring, 2 clamping device, 21 Clamping rod, 22 stabilizing rod, 23 stabilizing roller, 24 intermediate rod, 25 second belt, 26 clamping block, 27 fixing ring, 28 torsion spring, 29 extension rod, 291 right-angle plate, 292 second rack, 293 second gear, 294 third gear, 295 transmission rod, 296 fourth gear, 3 rejection device, 31 square cylinder, 32 third spring, 33 sliding rod, 34 second hydraulic rod, 35 rejection plate, 4 control device, 41 control slot, 42 control rod, 43 control plate, 44 switch rod, 45 switch slot, 46 fourth spring, 47 conductive plate. DETAILED DESCRIPTION

[0033] Reference Figures 1-14 A stacking device for a biodegradable and environmentally friendly lunch box production line includes four center plates 1, which are divided into two groups. A top plate 11 is fixedly connected between each group of center plates 1. A first hydraulic rod 12 is fixedly connected to the lower side of the top plate 11. The output end of the first hydraulic rod 12 is fixedly connected to a center box 13. A movable groove 197 is provided on the front side of the center box 13. Figure 5 、 Figure 6 , a moving plate 198 is provided in the moving groove 197, and the moving plate 198 runs through the moving groove 197. A circular groove 1991 is provided on both sides of the moving groove 197. The moving rod 199 is located in the moving groove 197 and is fixedly sleeved with a square rod 1995. The square rod 1995 is slidably connected to the circular groove 1991. A positioning rod 1993 is fixedly connected in the moving groove 197. The outer side of the positioning rod 1993 is rotatably sleeved with two sleeves 1994. The outer side of the square rod 1995 is rotatably sleeved with two rotating cylinders 1992. The two rotating cylinders 1992 are connected to the sleeve 1994 through a second spring 1996. The side of the moving rod 199 away from the center box 13 is fixedly connected with a moving plate 198, and a power device for the moving rod 199 is provided in the center box 13.

[0034] First, when the environmentally friendly lunch boxes need to be stacked, the first hydraulic rod 12 is started, and the first hydraulic rod 12 slowly drives the central box 13 to move upward, and the central box 13 drives the movable plate 198 to move through the movable rod 199, and finally completes the stacking operation of the environmentally friendly lunch boxes. Secondly, under the action of the circular groove 1991 and the square rod 1995, the movable rod 199 can only move along the range of the circular groove 1991. Then, under the action of the second spring 1996, when the movable rod 199 is not affected by any external force, the square rod 1995 is located on the upper side of the circular groove 1991, the distance between the sleeve 1994 and the rotating cylinder 1992 is minimized, and the second spring 1996 is always in a stretched state;

[0035] like Figure 2 、 Figure 3 、 Figure 4 The power device includes two fixed plates 14 symmetrically fixedly connected on the outside of the center box 13. The two fixed plates 14 are rotatably sleeved with the same power rod 15. Both ends of the power rod 15 are fixedly connected to a first gear 16. The side of the four center plates 1 close to the center box 13 is fixedly connected to a first rack 17. The first gear 16 and the first rack 17 are meshed with each other. A driven rod 191 is rotatably connected in the center box 13. The driven rod 191 is connected to the power rod 15 through a first belt 19. A rotating plate 192 is fixedly sleeved on the outside of the driven rod 191. The outside of the rotating plate 192 is provided with Contact groove 195, contact groove 195 is provided with a contact rod 194 sliding sleeve, contact rod 194 and movable plate 198 are arranged oppositely, contact rod 194 is connected to the bottom of movable groove 197 by first spring 196, and the upper side of movable plate 198 is provided with clamping device 2; the inner side of each of the four center plates 1 is provided with a slide groove 18, and the slide groove 18 is slidably connected with a slider 193, and the slider 193 is fixedly connected to the center box 13. Under the restriction of the slide groove 18 and the slider 193, the center box 13 can only slide up and down relative to the center plate 1, and cannot slide or rotate in other directions;

[0036] During the upward movement of the center box 13, since the center plate 1 is in a stationary state as a whole, the first rack 17 remains stationary. When the center box 13 moves upward, since the first rack 17 and the first gear 16 are in a meshing state, at this time, the first gear 16 rotates clockwise, and the first gear 16 drives the power rod 15 to rotate clockwise. The power rod 15 drives the driven rod 191 to rotate clockwise through the first belt 19, and the driven rod 191 drives the rotating plate 192 and the contact rod 194 to rotate clockwise with the driven rod 191 as the center. When the contact rod 194 and the moving plate 198 are connected, under the restriction of the circular groove 1991, the moving plate 198 will be driven to move away from the center box 13 first, and then move downward relative to the center box 13, and then to It moves in the direction close to the center box 13. In the process of moving in the direction close to the center box 13, the contact rod 194 and the moving rod 199 are disconnected. At this time, under the action of the circular groove 1991 and the second spring 1996, the moving rod 199 gradually returns to its original position until the contact rod 194 contacts the moving rod 199 again. In the process of moving the moving rod 199, the moving plate 198 moves following the moving rod 199. In the process of the moving plate 198 moving downward, its moving speed is less than the free fall speed of the environmentally friendly lunch box. The environmentally friendly lunch box falls on the upper side of the moving plate 198 and then moves with the moving plate 198. In the process of the moving plate 198 moving toward the center box 13, the connection between the moving plate 198 and the environmentally friendly lunch box is disconnected, thereby completing the stacking operation;

[0037] like Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 The clamping device 2 includes two clamping blocks 26 symmetrically fixedly connected on the upper side of the movable plate 198, and a clamping rod 21 is rotatably connected between the two clamping blocks 26. The outer fixed sleeve of the clamping rod 21 is provided with two fixing rings 27. The two fixing rings 27 are connected to the clamping blocks 26 through a torsion spring 28. The outer side of the clamping rod 21 is fixedly connected to two extension rods 29. The upper side of the two extension rods 29 is fixedly connected to the same stabilizing rod 22. The outer fixed sleeve of the stabilizing rod 22 is provided with a stabilizing roller 23. The outer side of the movable rod 199 is rotatably connected to two intermediate rods 24. The ends of the two intermediate rods 24 are fixedly connected to the third gear 29. 4. The outer sides of the two intermediate rods 24 are fixedly sleeved with a second gear 293. The outer side of the movable rod 199 is also rotatably connected to two transmission rods 295. The two transmission rods 295 are connected to the clamping rod 21 through a second belt 25. Both ends of the two transmission rods 295 are fixedly connected to a fourth gear 296. The fourth gear 296 and the second gear 293 are meshed with each other. Two right-angle plates 291 are symmetrically fixedly connected to the inner side of the center box 13. The inner sides of the two right-angle plates 291 are fixedly connected to a second rack 292. The second gear 293 and the third gear 294 are arranged opposite to each other. A rejection device 3 is provided between the center boxes 13.

[0038] In the process of moving rod 199 and moving plate 198 moving away from center box 13, moving rod 199 drives intermediate rod 24 and transmission rod 295 to move away from center box 13 at the same time, and then when moving rod 199 and moving plate 198 move downward relative to center box 13, moving rod 199 drives intermediate rod 24 and transmission rod 295 to move downward at the same time, when third gear 294 is engaged with second rack 292, due to the difference between second rack 292 and stationary, third gear 294 rotates counterclockwise at this time, and third gear 294 passes through center box 13. The intermediate rod 24 drives the second gear 293 to rotate counterclockwise, the second gear 296 drives the fourth gear 296 to rotate clockwise, the fourth gear 296 drives the transmission rod 295 to rotate clockwise, and the fourth gear 296 drives the clamping rod 21 to rotate clockwise through the second belt 25. The clamping rod 21 drives the stabilizing roller 23 to rotate around the clamping rod 21 through the extension rod 29 and the stabilizing rod 22. During this process, the environmentally friendly lunch box has already fallen on the upper side of the movable plate 198. At this time, the stabilizing roller 23 and the environmentally friendly lunch box are in close contact and connected together, completing the clamping and fixing operation of the environmentally friendly lunch box.

[0039] like Figure 11 The rejecting device 3 includes a square cylinder 31 arranged between the two center boxes 13, two slide rods 33 are slidably sleeved in the square cylinder 31, the two slide rods 33 are respectively fixedly connected to the center box 13, and the same third spring 32 is fixedly connected between the two slide rods 33. A second hydraulic rod 34 is fixedly connected to the outer side of the square cylinder 31, and a rejecting plate 35 is fixedly connected to the output end of the second hydraulic rod 34. The rejecting plate 35 is arranged between the movable plates 198, and a control device 4 of the second hydraulic rod 34 is provided on the upper side of the movable plate 198;

[0040] When a large gap is detected on the outside of the environmentally friendly lunch box or the environmentally friendly lunch box is severely damaged, the second hydraulic rod 34 is activated, thereby driving the rejection plate 35 to move, and the environmentally friendly lunch box on the upper side of the movable plate 198 is rejected, and the corresponding separation operation is automatically completed;

[0041] like Figure 12 、 Figure 13 、 Figure 14The control device 4 includes a plurality of control slots 41 evenly arranged on the upper side of the movable plate 198, a control rod 42 is slidably sleeved in the plurality of control slots 41, and the control rod 42 is connected to the bottom of the control slot 41 through a fourth spring 46, and the end of the control rod 42 away from the control slot 41 is fixedly connected to the control plate 43, and the control plates 43 are abutted against each other. A switch slot 45 is provided on the lower side of the control plate 43, and a switch rod 44 is provided on the inner thread sleeve of the switch slot 45. Two conductive plates 47 are provided in the plurality of control slots 41, one of which is located at the bottom of the control slot 41 and fixedly connected to the control slot 41, and the other conductive plate 47 is fixedly connected to the control rod 42. The two conductive plates 47, the switch rod 44 and the second hydraulic rod 34 are arranged opposite to each other; the outer sides of the control plate 43 and the stabilizing roller 23 are both smooth, which facilitates the subsequent removal of environmentally friendly lunch boxes;

[0042] First, the switch rod 44 is connected to the second hydraulic rod 34 through a wire. Secondly, one of the conductive plates 47 in the adjacent control slot 41 is connected to the adjacent control slot 41 through a wire, and the other conductive plate 47 is connected to its own control slot 41 through a wire. The control slot 41 in the control rod 42 is connected. Before the stacking operation, the switch rod 44 is screwed into the corresponding control slot 41 according to the actual size of the environmentally friendly lunch box. During the stacking operation, when the stabilizing roller 23 rotates, when the stabilizing roller 23, the environmentally friendly lunch box, and the control plate 43 come into contact, the control plate 43 will be driven to move downward relative to the movable plate 198. When the switch rod 44 and the movable plate 198 are in contact, the control power of the second hydraulic rod 34 is turned on, and the control circuit of the second hydraulic rod 34 is started. At the same time, the control plate 43 will also drive the control rod 42 to move downward, and the two conductive plates 47 are in contact. When all the conductive plates 47 are in contact, it means that the environmentally friendly lunch box has high integrity and good quality, and the second hydraulic rod 34 will not be started. Only when there is no contact between the conductive plates 47 inside one control slot 41, it means that there is a large gap on the outside of the environmentally friendly lunch box and the environmentally friendly lunch box is severely damaged, and the environmentally friendly lunch box can be removed.

[0043] In the present invention, when it is necessary to stack the environmentally friendly lunch boxes, the specific operation is as follows: the device is moved as a whole to the lower side of the environmentally friendly lunch box transportation line, so that the environmentally friendly lunch boxes can be perfectly moved between the two center boxes 13. Before the stacking operation, the switch rod 44 is screwed into the corresponding control groove 41 according to the actual size of the environmentally friendly lunch boxes, and the first hydraulic rod 12 is started. The first hydraulic rod 12 slowly drives the center box 13 to move upward. In the process of the center box 13 moving upward, since the center plate 1 is in a stationary state as a whole, the first rack 17 remains stationary. When the center box 13 moves upward, since the first rack 17 and the first gear 16 are in a meshing state, at this time, the first gear 16 rotates clockwise, and the first gear 16 drives the power rod 15 to rotate clockwise. When the contact rod 194 and the movable plate 198 are connected, the movable plate 198 will be driven to move away from the center box 13 under the restriction of the circular groove 1991, and then move downward relative to the center box 13, and then move toward the center box 13. In the process of moving toward the center box 13, the contact rod 194 and the movable rod 199 are disconnected. At this time, under the action of the circular groove 1991 and the second spring 1996, the movable rod 199 gradually returns to its original position until the contact rod 194 and the movable rod 199 are connected again. In the process of moving the moving rod 199 moving, the moving plate 198 moves with the moving rod 199. In the process of moving the moving plate 198 moving downward, its moving speed is less than the free-fall speed of the environmentally friendly lunch box. The environmentally friendly lunch box falls on the upper side of the moving plate 198 and then moves with the moving plate 198. In the process of moving the moving plate 198 moving toward the center box 13, the connection between the moving plate 198 and the environmentally friendly lunch box is disconnected, thereby completing the stacking operation. In the process of moving the moving rod 199 and the moving plate 198 moving away from the center box 13, the moving rod 199 drives the intermediate rod 24 and the transmission rod 295 to move away from the center box 13 at the same time, and then when the moving rod 199 and the moving plate 198 move downward relative to the center box 13, the moving rod 19 9 drives the middle rod 24 and the transmission rod 295 to move downward at the same time. When the third gear 294 is engaged with the second rack 292, since the second rack 292 is stationary, the third gear 294 rotates counterclockwise at this time, and the third gear 294 drives the second rack 292 to rotate counterclockwise through the middle rod 24. The second gear 293 drives the fourth gear 296 to rotate clockwise. The fourth gear 296 drives the transmission rod 295 to rotate clockwise. The fourth gear 296 drives the clamping rod 21 to rotate clockwise through the second belt 25. The clamping rod 21 drives the stabilizing roller 23 to rotate around the clamping rod 21 through the extension rod 29 and the stabilizing rod 22. During this process, the environmentally friendly lunch box has already fallen on the upper side of the movable plate 198. At this time, the stabilizing roller 23 and the environmentally friendly lunch box are in close contact and connected together.The clamping and fixing operation of the environmentally friendly lunch box is completed. When the stabilizing roller 23 rotates, when the stabilizing roller 23, the environmentally friendly lunch box, and the control plate 43 come into contact, the control plate 43 will be driven to move downward relative to the movable plate 198. When the switch rod 44 and the movable plate 198 come into contact, the control power of the second hydraulic rod 34 is turned on, and the control circuit of the second hydraulic rod 34 is activated. At the same time, the control plate 43 will also drive the control rod 42 to move downward, and the two conductive plates 47 will come into contact. When all the conductive plates 47 are in contact, it means that the environmentally friendly lunch box has high integrity and good quality, and the second hydraulic rod 34 will not be activated. Only when the conductive plates 47 inside one control groove 41 do not contact each other, it means that there is a large gap on the outside of the environmentally friendly lunch box and the environmentally friendly lunch box has been severely damaged. At this time, the second hydraulic rod 34 is activated, which in turn drives the rejection plate 35 to move, and the environmentally friendly lunch box on the upper side of the movable plate 198 is rejected, automatically completing the corresponding separation operation.

Claims

1. A stacking device for a biodegradable and environmentally friendly lunch box production line, comprising four center plates (1), characterized in that: The four center plates (1) are divided into two groups. The center plates (1) in each group are fixedly connected to a top plate (11). The lower side of the top plate (11) is fixedly connected to a first hydraulic rod (12). The output end of the first hydraulic rod (12) is fixedly connected to a center box (13). The front side of the center box (13) is provided with a moving groove (197). A moving rod (199) is provided in the moving groove (197). The moving rod (199) passes through the moving groove (197). Both sides of the moving groove (197) are provided with a circular groove (1991). The moving rod (199) is located in the moving groove (197) and is fixedly sleeved with a square rod (1995). The square rod (1995) and the circular groove (1991) slide The movable groove (197) is fixedly connected with a positioning rod (1993), the outer side of the positioning rod (1993) is provided with two sleeves (1994) for rotation, the outer side of the square rod (1995) is provided with two rotating cylinders (1992), the two rotating cylinders (1992) are connected to the sleeves (1994) through a second spring (1996), and the movable rod (199) is fixedly connected with a movable plate (198) on the side away from the center box (13). The center box (13) is provided with a power device for the movable rod (199), and the power device includes two fixed plates (14) symmetrically fixedly connected on the outer side of the center box (13), and the two fixed plates (14) are rotatably provided with the same power rod. (15), both ends of the power rod (15) are fixedly connected to a first gear (16), one side of the four center plates (1) close to the center box (13) is fixedly connected to a first rack (17), the first gear (16) and the first rack (17) are meshed with each other, a driven rod (191) is rotatably connected in the center box (13), the driven rod (191) is connected to the power rod (15) through a first belt (19), the outer fixed sleeve of the driven rod (191) is provided with a rotating plate (192), the outer side of the rotating plate (192) is provided with a contact groove (195), the sliding sleeve in the contact groove (195) is provided with a contact rod (194), the contact rod (194) and the moving rod (199) are arranged relative to each other The contact rod (194) is connected to the bottom of the movable groove (197) through a first spring (196), a clamping device (2) is provided on the upper side of the movable plate (198), and a rejection device (3) is provided between the center boxes (13). The rejection device (3) includes a square tube (31) provided between the two center boxes (13), and two sliding rods (33) are provided in a sliding sleeve in the square tube (31). The two sliding rods (33) are fixedly connected to the center boxes (13) respectively, and the same third spring (32) is fixedly connected between the two sliding rods (33). The outer side of the square tube (31) is fixedly connected to a second hydraulic rod (34), and the output end of the second hydraulic rod (34) is fixedly connected to a rejection plate (35).The rejecting plate (35) is located between the movable plates (198), and a control device (4) for the second hydraulic rod (34) is provided on the upper side of the movable plates (198).

2. The stacking device of the biodegradable environmentally friendly lunch box production line according to claim 1, characterized in that: The inner sides of the four center plates (1) are each provided with a slide groove (18), a slider (193) is slidably connected in the slide groove (18), and the slider (193) is fixedly connected to the center box (13).

3. The stacking device of the biodegradable environmentally friendly lunch box production line according to claim 1, characterized in that: The clamping device (2) includes two clamping blocks (26) symmetrically fixedly connected on the upper side of the movable plate (198), a clamping rod (21) is rotatably connected between the two clamping blocks (26), an outer fixed sleeve of the clamping rod (21) is provided with two fixing rings (27), the two fixing rings (27) are connected to the clamping blocks (26) through a torsion spring (28), the outer side of the clamping rod (21) is fixedly connected to two extension rods (29), the upper side of the two extension rods (29) is fixedly connected to the same stabilizing rod (22), the outer fixed sleeve of the stabilizing rod (22) is provided with a stabilizing roller (23), the outer side of the movable rod (199) is rotatably connected to two intermediate rods (24), the ends of the two intermediate rods (24) are fixed A third gear (294) is connected, and the outer fixed sleeves of the two intermediate rods (24) are provided with a second gear (293). The outer side of the movable rod (199) is also rotatably connected to two transmission rods (295), and the two transmission rods (295) are connected through a second belt (25) and a clamping rod (21). Both ends of the two transmission rods (295) are fixedly connected to a fourth gear (296), and the fourth gear (296) and the second gear (293) are meshed with each other. The inner side of the central box (13) is symmetrically fixedly connected to two right-angle plates (291), and the inner sides of the two right-angle plates (291) are fixedly connected to a second rack (292). The second gear (293) and the third gear (294) are arranged relative to each other.

4. The stacking device of the biodegradable environmentally friendly lunch box production line according to claim 1, characterized in that: The control device (4) includes a plurality of control slots (41) uniformly arranged on the upper side of the movable plate (198), a control rod (42) is provided in a sliding sleeve in the plurality of control slots (41), the control rod (42) is connected to the bottom of the control slot (41) through a fourth spring (46), the end of the control rod (42) away from the control slot (41) is fixedly connected to a control plate (43), the control plates (43) are abutted against each other, a switch slot (45) is provided on the lower side of the control plate (43), a switch rod (44) is provided in the inner thread sleeve of the switch slot (45), two conductive plates (47) are provided in the plurality of control slots (41), one of the conductive plates (47) is located at the bottom of the control slot (41) and is fixedly connected to the control slot (41), and the other conductive plate (47) is fixedly connected to the control rod (42), and the two conductive plates (47), the switch rod (44) and the second hydraulic rod (34) are arranged relative to each other.

5. The stacking device of the biodegradable environmentally friendly lunch box production line according to claim 4, characterized in that: The outer sides of the control plate (43) and the stabilizing roller (23) are both smooth.

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