An integrated automatic packaging machine for opening and packing cardboard boxes

Abstract

The present invention discloses a fully automatic packaging machine for integrated unpacking and packing of cartons, which relates to the field of carton packaging. It includes a support base. An unpacking mechanism is arranged on the front side of the support base, and a packing and packaging line is arranged on the right side of the unpacking mechanism for automatic packing and packaging of cartons. Above the support base is used to place folded cartons, and symmetric positioning plates are arranged on the left and right above the support base, and a baffle is arranged on the rear side of the support base. This fully automatic packaging machine for integrated unpacking and packing of cartons provides a squeezing effect for the carton through the first squeezing block, so that it can be stably attached to the suction cup during subsequent unpacking. And a second squeezing block is arranged behind the first squeezing block. When the first squeezing block moves to the most front side, the carton can be placed, and the second squeezing block continues to provide squeezing for the carton to realize continuous feeding of the carton.

Description

Technical Field

[0001] The present invention relates to the technical field of carton packaging, and particularly to a fully automatic packaging machine for integrated unpacking and packing of cartons. Background Art

[0002] When using cartons to package products, a fully automatic packaging machine can be used to replace manual unpacking and packaging to improve packaging efficiency.

[0003] Prior Art 1 (a Chinese patent with application number CN202411975919.2, published on January 28, 2025) is an integrated unpacking and packing machine applicable to cartons of different sizes, related to the field of carton processing, including a frame. A cardboard placement table is installed at the front end of the frame, and an air delivery component is also installed at the left inner position of the frame, and the air delivery component is located below the placement board; a second electric push rod is also installed at the top right position of the frame, and the setting of the flipping mechanism can facilitate the sealing of the upper and lower ends of the carton. This integrated unpacking and packing machine applicable to cartons of different sizes is provided with a flipping mechanism. Through the setting of the flipping mechanism, the tape can fully seal the upper and lower ends of the carton, reducing manual intervention and improving work efficiency. The set carton size adjustment mechanism can also well handle the placement of different cartons. In addition, the set carton limiting mechanism can ensure the adaptive conveying of cartons of different sizes; Prior Art 2 (a Chinese patent with application number CN201810852698.8, published on November 23, 2018) is an automatic packaging machine, including an automatic conveyor line for conveying the scale frame along the conveying direction. The automatic conveyor line sequentially passes through an assembly station, a dust removal station, a plastic packaging station, a foam installation station, a packing station, and a sealing station. The assembly station is used to install the scale pan on the scale frame to assemble an electronic scale. The dust removal station is used to remove dust from the electronic scale. The plastic packaging station is used to package the dust-removed electronic scale and external accessories together into a plastic film. The foam installation station is used to install anti-collision foam on the electronically scaled plastic film package. An unpacking station is provided at the packing station, and the unpacking station is used to turn the folded carton into an open carton. The packing station packs the electronically scaled anti-collision foam-installed electronic scale into the open carton, and the sealing station seals the carton containing the electronic scale. Therefore, the present invention has the advantages of high automation, low labor input, and high production efficiency.

[0004] The current fully automatic packaging machine can realize the automatic unpacking and conveying of cartons. The cartons are loaded in a stacked manner. However, when opening the cartons, generally, the operation is carried out by sucking with a suction cup. The suction cup and the carton release the extrusion on the carton, and a counter-thrust needs to be provided for the carton to keep it stable. Otherwise, the adsorption will be unstable. To provide a counter-thrust for the carton, a push plate and a spring are directly used in cooperation with other structures. As a result, when replenishing the carton later, the thrust on the carton needs to be released first and then the cardboard is replenished. Therefore, the operation of the equipment needs to be paused, and the carton cannot be automatically replenished during packaging, which reduces the automatic packaging efficiency and operation continuity of the device. Summary of the Invention

[0005] The purpose of the present invention is to provide an integrated fully automatic packaging machine for unpacking and packing cartons, so as to solve the problem in the above-mentioned background technology that the current packaging machine directly uses a push plate and a spring in cooperation with other structures to provide a counter-thrust for the carton, resulting in the need to release the thrust on the carton first and then replenish the cardboard when replenishing the carton later. Therefore, the operation of the equipment needs to be paused, and the carton cannot be automatically replenished during packaging.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An integrated fully automatic packaging machine for unpacking and packing cartons includes a support base. An unpacking mechanism is arranged on the front side of the support base, and a packing and packaging line is arranged on the right side of the unpacking mechanism to carry out automatic packing and packaging of cartons. Above the support base is used for placing folded cartons. Symmetric positioning plates are arranged above the support base, and a baffle is arranged at the rear side of the support base. A blocking frame for providing a blocking effect on the carton is arranged on the front side of the positioning plate. A first extrusion block is arranged inside the positioning plate, and the first extrusion block extends out of the inside of the positioning plate to provide an extrusion and pushing effect on the carton. A second extrusion block is arranged at the rear side of the first extrusion block, and movable blocks are connected to the outer sides of the first extrusion block and the second extrusion block. A telescopic control mechanism is arranged on the outer sides of the first extrusion block and the second extrusion block, and a driving mechanism is arranged above the movable block to control the movement of the movable block.

[0007] Further optimizing the technical solution, a first sliding groove and a second sliding groove are opened inside the positioning plate to provide space for the movement of the movable block. The second sliding groove is located outside the first sliding groove, and the ends of the first sliding groove and the second sliding groove are interconnected.

[0008] Further optimizing the technical solution, the telescopic control mechanism includes a first magnet, a first spring, a second magnet, and a pushing mechanism;

[0009] The first magnet is arranged at the outer ends of the first extrusion block and the second extrusion block;

[0010] The first spring is arranged outside the first magnet to provide an outward thrust for the first magnet;

[0011] A second magnet, fixed to the front end of the second sliding groove, with opposite magnetic poles facing each other between the second magnet and the first magnet;

[0012] A pushing mechanism, arranged at the rear end of the second sliding groove, to control the movement of the movable block.

[0013] To further optimize this technical solution, the pushing mechanism includes a third magnet, a connecting rod, a driving plate, and a second spring;

[0014] A third magnet, arranged at the rear end of the second sliding groove, with the same magnetic poles facing each other between the third magnet and the first magnet, and a front-back sliding structure is formed between the third magnet and the positioning plate;

[0015] A connecting rod, fixed to the rear end of the third magnet;

[0016] A driving plate, arranged at the rear end of the connecting rod, and the driving plate is located behind the baffle;

[0017] A second spring, arranged between the driving plate and the baffle to provide a thrust force for the driving plate.

[0018] To further optimize this technical solution, the driving mechanism includes a toothed card, a first conveyor belt, a second conveyor belt, a support roller, a first motor, and a second motor;

[0019] A toothed card, fixed above the movable block;

[0020] A first conveyor belt, arranged above the first sliding groove, and the first conveyor belt is connected to the toothed card to drive the movable block to move;

[0021] A second conveyor belt, arranged above the second sliding groove;

[0022] A support roller, arranged at the ends of the first conveyor belt and the second conveyor belt to provide support for them;

[0023] A first motor, connected to the support roller inside the first conveyor belt;

[0024] A second motor, connected to the support roller inside the second conveyor belt.

[0025] To further optimize this technical solution, a height adjustment mechanism is arranged on the outside of the blocking frame to adjust the height position of the blocking frame. A left-right sliding structure is formed between the positioning plate and the support seat, and a second control rod penetrates through the positioning plate. The second control rod is a bidirectional threaded rod, and a threaded connection is formed between the second control rod and the positioning plate.

[0026] To further optimize this technical solution, a left-right sliding structure is formed between the connecting rod and the driving plate, and a left-right sliding structure is formed between the connecting rod and the baffle.

[0027] To further optimize this technical solution, the height adjustment mechanism includes a connecting plate, a first control rod, and a guiding block;

[0028] The connecting plate is arranged between the outside and the inside of the blocking frame to form a horizontal sliding structure;

[0029] The first control rod penetrates through the end of the blocking frame and forms a threaded connection with the blocking frame;

[0030] The guiding block is fixed to the rear side of the connecting plate, and a vertical sliding structure is formed between the guiding block and the positioning plate.

[0031] To further optimize this technical solution, a synchronous transmission mechanism is arranged on the outer side of the supporting roller to make the supporting rollers in the two groups of positioning plates rotate synchronously.

[0032] To further optimize this technical solution, the synchronous transmission mechanism includes a first transmission shaft, an output shaft, a second transmission shaft, a transmission belt, a docking head, and a docking block;

[0033] The first transmission shaft is fixed to the inner side of the supporting roller at the rear end of the first conveyor belt;

[0034] The output shaft is fixed to the outer side of the supporting roller at the rear end of the second conveyor belt;

[0035] The second transmission shaft is rotatably installed on the outer side of the positioning plate;

[0036] The transmission belt is arranged on the outer side of the second transmission shaft, and the second transmission shaft is connected to the output shaft through the transmission belt;

[0037] The docking head is fixed to the inner ends of the first transmission shaft and the second transmission shaft on one side of the positioning plate;

[0038] The docking block is arranged opposite to the docking head, and a horizontal sliding structure is formed between the docking block and the docking head.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] (1) The first extrusion block provides an extrusion effect for the carton, enabling it to be stably attached to the suction cup during subsequent unpacking. Moreover, a second extrusion block is arranged at the rear side of the first extrusion block. When the first extrusion block moves to the most front side, the carton can be placed, and the second extrusion block continues to provide extrusion for the carton, realizing continuous feeding of the carton.

[0041] (2) The first extrusion block and the second extrusion block can move and switch positions within the positioning plate through the first sliding groove and the second sliding groove, enabling them to move reciprocally and cyclically extrude the carton. Moreover, the first extrusion block and the second extrusion block can perform automatic telescopic movement, improving the automation degree of the device.

[0042] (3) The first conveyor belt and the second conveyor belt can drive the movable block to move in different directions, so as to switch the position of the extrusion block for recycling, and the operation of the equipment does not need to be paused when loading cartons.

[0043] (4) The movable block can be transferred from the first chute to the second chute by the mutual attraction between the first magnet and the second magnet, and the movable block can be transferred from the second chute to the first chute by the mutual repulsion between the first magnet and the third magnet, so that it can continue to provide thrust for the subsequent cartons.

[0044] (5) The positions of the positioning plate and the blocking frame can be adjusted, so that the device can be used for cartons of different sizes, and the conveyor belts in the two groups of positioning plates can move synchronously, so that the application of thrust is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0046] Figure 2 is a side view structural schematic diagram of the support base of the present invention;

[0047] Figure 3 is a top view structural schematic diagram of the support base of the present invention;

[0048] Figure 4 is a three-dimensional structural schematic diagram of the blocking frame of the present invention;

[0049] Figure 5 is a connection structural schematic diagram of the connecting plate and the positioning plate of the present invention;

[0050] Figure 6 is a top view structural schematic diagram of the first extrusion block of the present invention;

[0051] Figure 7 is an internal structural schematic diagram of the first movable block of the present invention;

[0052] Figure 8 is for the present invention Figure 6 enlarged structural schematic diagram at position a;

[0053] Figure 9 is a top sectional structural schematic diagram of the positioning plate of the present invention;

[0054] Figure 10 is a three-dimensional structural schematic diagram of the drive plate of the present invention;

[0055] Figure 11 is a docking structural schematic diagram of the first transmission shaft of the present invention;

[0056] Figure 12 is a side view structural schematic diagram of the first conveyor belt of the present invention.

[0057] In the figure: 1. Support base; 2. Carton opening mechanism; 3. Packing and packaging line; 4. Positioning plate; 5. Baffle; 6. Blocking frame; 7. Connecting plate; 8. First control rod; 9. Guide block; 10. First extrusion block; 11. Movable block; 12. Pressure sensor; 13. First magnet; 14. First spring; 15. Locking tooth; 16. First chute; 17. Second chute; 18. Second magnet; 19. Third magnet; 20. Connecting rod; 21. Driving plate; 22. Second spring; 23. Second extrusion block; 24. First conveyor belt; 25. Second conveyor belt; 26. Support roller; 27. First motor; 28. Second motor; 29. First transmission shaft; 30. Output shaft; 31. Second transmission shaft; 32. Transmission belt; 33. Docking head; 34. Docking block; 35. Second control rod. Detailed implementation mode

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0059] Please refer to Figures 1 - 12 , Embodiment 1: The present invention provides the following technical solutions: An integrated fully automatic packaging machine for opening and packing cartons includes a support base 1. A carton opening mechanism 2 is arranged on the front side of the support base 1, and a packing and packaging line 3 is arranged on the right side of the carton opening mechanism 2 to perform automatic packing and packaging of cartons. The upper part of the support base 1 is used to place folded cartons, and positioning plates 4 symmetrically arranged left and right are arranged above the support base 1. A baffle 5 is arranged at the rear side of the support base 1. A blocking frame 6 for providing a blocking effect for the carton is arranged on the front side of the positioning plate 4. A first extrusion block 10 is arranged inside the positioning plate 4. The first extrusion block 10 extends out of the inside of the positioning plate 4 to provide an extrusion and pushing effect on the carton. A second extrusion block 23 is arranged at the rear side of the first extrusion block 10. Movable blocks 11 are connected to the outer sides of both the first extrusion block 10 and the second extrusion block 23. A telescopic control mechanism is arranged on the outer sides of the first extrusion block 10 and the second extrusion block 23. A driving mechanism is arranged above the movable block 11 to control the movement of the movable block 11.

[0060] Place the carton to be processed on the support base 1, and provide an extrusion effect on it through the first extrusion block 10. A pressure sensor 12 is arranged inside the first extrusion block 10 to detect its extrusion force. The cartons on the support base 1 are sequentially opened through the carton opening mechanism 2 and then transferred to the packing and packaging line 3 for subsequent packing and sealing processing.

[0061] Embodiment 2: On the basis of Embodiment 1, it is disclosed that the inside of the positioning plate 4 is provided with a first sliding groove 16 and a second sliding groove 17 to provide space for the movement of the movable block 11, and the second sliding groove 17 is located outside the first sliding groove 16. The ends of the first sliding groove 16 and the second sliding groove 17 are interconnected. The telescopic control mechanism includes a first magnet 13, a first spring 14, a second magnet 18 and a pushing mechanism. The first magnet 13 is arranged at the outer ends of the first pressing block 10 and the second pressing block 23. The first spring 14 is arranged outside the first magnet 13 to provide an outward thrust for the first magnet 13. The second magnet 18 is fixed at the front end of the second sliding groove 17. The second magnet 18 and the first magnet 13 are arranged with opposite different-named magnetic poles. The pushing mechanism is arranged at the rear end of the second sliding groove 17 to control the movement of the movable block 11. The pushing mechanism includes a third magnet 19, a connecting rod 20, a driving plate 21 and a second spring 22. The third magnet 19 is arranged at the rear end of the second sliding groove 17, and the third magnet 19 and the first magnet 13 are arranged with opposite same-named magnetic poles, and a front-back sliding structure is formed between the third magnet 19 and the positioning plate 4. The connecting rod 20 is fixed at the rear end of the third magnet 19. The driving plate 21 is arranged at the rear end of the connecting rod 20, and the driving plate 21 is located behind the baffle 5. The second spring 22 is arranged between the driving plate 21 and the baffle 5 to provide a thrust for the driving plate 21. The driving mechanism includes a tooth 15, a first conveyor belt 24, a second conveyor belt 25, a support roller 26, a first motor 27 and a second motor 28. The tooth 15 is fixed above the movable block 11. The first conveyor belt 24 is arranged above the first sliding groove 16, and the first conveyor belt 24 is connected to the tooth 15 to drive the movable block 11 to move. The second conveyor belt 25 is arranged above the second sliding groove 17. The support roller 26 is arranged at the ends of the first conveyor belt 24 and the second conveyor belt 25 to provide support for them. The first motor 27 is connected to the support roller 26 inside the first conveyor belt 24. The second motor 28 is connected to the support roller 26 inside the second conveyor belt 25.

[0062] When opening the carton, the movement of the first conveyor belt 24 drives the movable block 11 to move, which in turn drives the first extrusion block 10 to move, providing continuous extrusion for the carton. When the carton needs to be replenished, the drive plate 21 can be pushed to drive the third magnet 19 to move. The third magnet 19 and the first magnet 13 relatively push the second extrusion block 23 and the movable block 11 to move, pushing them from the second chute 17 into the first chute 16, so that the second extrusion block 23 extends out of the positioning plate 4. Placing the carton between the second extrusion block 23 and the first extrusion block 10 can complete the feeding and replenishment. Subsequently, the first extrusion block 10 continues to move. When the first magnet 13 and the second magnet 18 are opposite, the first extrusion block 10 is attracted and moves into the interior of the movable block 11. At the same time, the movable block 11 moves from the first chute 16 into the second chute 17. Subsequently, the first conveyor belt 24 continues to run to drive the second extrusion block 23 to move and extrude the carton after feeding and replenishment, so that it can be continuously opened. The movable block 11 that has moved into the second chute 17 can move backward under the drive of the second conveyor belt 25 until it moves to the rear end of the second chute 17. Subsequently, when the carton needs to be replenished, it can be controlled to extend out, without stopping the operation of the equipment, making the packaging more efficient.

[0063] Embodiment 3: On the basis of Embodiment 2, it is disclosed that a height adjustment mechanism is provided on the outer side of the blocking frame 6 to adjust the height position of the blocking frame 6. A left-right sliding structure is formed between the positioning plate 4 and the support base 1, and a second control rod 35 penetrates through the inside of the positioning plate 4. The second control rod 35 is a bidirectional threaded rod, and a threaded connection is formed between the second control rod 35 and the positioning plate 4. A left-right sliding structure is formed between the connecting rod 20 and the driving plate 21, and a left-right sliding structure is formed between the connecting rod 20 and the baffle 5. The height adjustment mechanism includes a connecting plate 7, a first control rod 8, and a guiding block 9. The connecting plate 7 is provided on the outer side of the blocking frame 6 and forms a horizontal sliding structure with the blocking frame 6. The first control rod 8 penetrates through the end of the blocking frame 6 and forms a threaded connection with the blocking frame 6. The guiding block 9 is fixed to the rear side of the connecting plate 7, and a vertical sliding structure is formed between the guiding block 9 and the positioning plate 4. A synchronous transmission mechanism is provided on the outer side of the support roller 26 to make the support rollers 26 in the two positioning plates 4 rotate synchronously. The synchronous transmission mechanism includes a first transmission shaft 29, an output shaft 30, a second transmission shaft 31, a transmission belt 32, a docking head 33, and a docking block 34. The first transmission shaft 29 is fixed to the inner side of the support roller 26 at the rear end of the first conveyor belt 24. The output shaft 30 is fixed to the outer side of the support roller 26 at the rear end of the second conveyor belt 25. The second transmission shaft 31 is rotatably installed on the outer side of the positioning plate 4. The transmission belt 32 is provided on the outer side of the second transmission shaft 31. The second transmission shaft 31 is connected to the output shaft 30 through the transmission belt 32. The docking head 33 is fixed to the inner ends of the first transmission shaft 29 and the second transmission shaft 31 on one side of the positioning plate 4. The docking block 34 is arranged opposite to the docking head 33, and a horizontal sliding structure is formed between the docking block 34 and the docking head 33.

[0064] The positions of the blocking frame 6 and the positioning plate 4 can be adjusted according to the size of the carton. When adjusting the blocking frame 6, rotate the first control rod 8 to drive the blocking frame 6 and the connecting plate 7 to move vertically, and the guiding block 9 slides in the positioning plate 4. When the positioning plate 4 needs to be adjusted, rotate the second control rod 35 to drive the positioning plate 4 to move. The positioning plate 4 drives the connecting plate 7 to slide on the blocking frame 6. At the same time, the connecting rod 20 slides in the driving plate 21. A horizontal sliding connection is formed between the driving plate 21 and the connecting rod 20. The docking block 34 slides on the outer side of the docking head 33 to realize the adjustment of the positioning distance of the positioning plate 4.

[0065] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0066] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An integrated fully automatic packing machine for opening and packing cardboard boxes, comprising a support base (1). An unpacking mechanism (2) is arranged on the front side of the support base (1), and a packing and packaging line (3) is arranged on the right side of the unpacking mechanism (2) to automatically pack the cardboard boxes; It is characterized in that: Above the support base (1) is used to place folded cardboard boxes. Symmetric positioning plates (4) are arranged above the support base (1), and a baffle (5) is arranged at the rear side of the support base (1). A blocking frame (6) for providing a blocking effect to the cardboard box is arranged on the front side of the positioning plate (4). A first extrusion block (10) is arranged inside the positioning plate (4). The first extrusion block (10) extends out of the inside of the positioning plate (4) to provide an extrusion and pushing effect to the cardboard box. A second extrusion block (23) is arranged at the rear side of the first extrusion block (10). Moving blocks (11) are connected to the outer sides of both the first extrusion block (10) and the second extrusion block (23). A telescopic control mechanism is arranged on the outer sides of the first extrusion block (10) and the second extrusion block (23). A driving mechanism is arranged above the moving block (11) to control the movement of the moving block (11); The telescopic control mechanism includes a first magnet (13), a first spring (14), a second magnet (18) and a pushing mechanism; The first magnet (13) is arranged at the outer ends of the first extrusion block (10) and the second extrusion block (23); The first spring (14) is arranged outside the first magnet (13) to provide an outward thrust to the first magnet (13); The second magnet (18) is fixed at the front end of the second chute (17). The second magnet (18) and the first magnet (13) are arranged with opposite magnetic poles facing each other; The pushing mechanism is arranged at the rear end of the second chute (17) to control the movement of the moving block (11); The pushing mechanism includes a third magnet (19), a connecting rod (20), a driving plate (21) and a second spring (22); The third magnet (19) is arranged at the rear end of the second chute (17). The third magnet (19) and the first magnet (13) are arranged with the same magnetic poles facing each other, and a front-back sliding structure is formed between the third magnet (19) and the positioning plate (4); The connecting rod (20) is fixed to the rear end of the third magnet (19); The driving plate (21) is arranged at the rear end of the connecting rod (20), and the driving plate (21) is located behind the baffle (5); The second spring (22) is arranged between the driving plate (21) and the baffle (5) to provide a thrust to the driving plate (21); The driving mechanism includes a toothed block (15), a first conveyor belt (24), a second conveyor belt (25), a support roller (26), a first motor (27) and a second motor (28); The toothed block (15) is fixed above the moving block (11); The first conveyor belt (24) is arranged above the first chute (16), and the first conveyor belt (24) is connected to the toothed block (15) to drive the moving block (11) to move; The second conveyor belt (25) is arranged above the second chute (17); The supporting roller (26) is arranged at the ends of the first conveyor belt (24) and the second conveyor belt (25) to provide support for them; The first motor (27) is connected to the supporting roller (26) inside the first conveyor belt (24); The second motor (28) is connected to the supporting roller (26) inside the second conveyor belt (25); A height adjusting mechanism is arranged on the outer side of the blocking frame (6) to adjust the height position of the blocking frame (6). A left - right sliding structure is formed between the positioning plate (4) and the support seat (1), and a second control rod (35) passes through the positioning plate (4). The second control rod (35) is a bidirectional threaded rod, and a threaded connection is formed between the second control rod (35) and the positioning plate (4).

2. The fully automatic packaging machine for integrated case opening and packing of a carton according to claim 1, wherein: A first sliding groove (16) and a second sliding groove (17) are formed inside the positioning plate (4) to provide space for the movement of the movable block (11). The second sliding groove (17) is located outside the first sliding groove (16), and the ends of the first sliding groove (16) and the second sliding groove (17) are interconnected.

3. An integrated full-automatic packaging machine for opening and packing cartons according to claim 2, characterized in that: A left - right sliding structure is formed between the connecting rod (20) and the driving plate (21), and a left - right sliding structure is formed between the connecting rod (20) and the baffle (5).

4. An integrated full-automatic packing machine for opening and packing cartons according to claim 2, characterized in that: The height adjusting mechanism includes a connecting plate (7), a first control rod (8) and a guiding block (9); The connecting plate (7) is arranged on the outer side of the blocking frame (6) and forms a horizontal sliding structure with the blocking frame (6); The first control rod (8) passes through the end of the blocking frame (6) and forms a threaded connection with the blocking frame (6); The guiding block (9) is fixed to the rear side of the connecting plate (7), and a up - down sliding structure is formed between the guiding block (9) and the positioning plate (4).

5. An integrated full-automatic packaging machine for opening and packing cartons according to claim 4, characterized in that: A synchronous transmission mechanism is arranged on the outer side of the supporting roller (26) to make the supporting rollers (26) in the two positioning plates (4) rotate synchronously.

6. The full-automatic packaging machine for integrated unpacking and packing of cartons according to claim 5, wherein: The synchronous transmission mechanism includes a first transmission shaft (29), an output shaft (30), a second transmission shaft (31), a transmission belt (32), a docking head (33) and a docking block (34); The first transmission shaft (29) is fixed inside the supporting roller (26) at the rear end of the first conveyor belt (24); The output shaft (30) is fixed outside the supporting roller (26) at the rear end of the second conveyor belt (25); The second transmission shaft (31) is rotatably installed on the outer side of the positioning plate (4); The transmission belt (32) is arranged on the outer side of the second transmission shaft (31), and the second transmission shaft (31) is connected to the output shaft (30) through the transmission belt (32); The docking head (33) is fixed to the inner ends of the first transmission shaft (29) and the second transmission shaft (31) on one side of the positioning plate (4); The docking block (34) is arranged opposite to the docking head (33), and a horizontal sliding structure is formed between the docking block (34) and the docking head (33).

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