A tray automatic packaging system dedicated to shrimp products

Abstract

This invention relates to the field of deep processing and packaging of aquatic products, and discloses an automatic pallet packaging system specifically for shrimp products. The system includes a first conveyor frame, a second conveyor frame distributed on one side of the first conveyor frame, a base frame fixed to the bottom of the second conveyor frame, a first motor fixed to the center of the bottom end of the base frame, a rotating seat connected to the output end of the first motor, and a bending rod rotatably connected to the top of the rotating seat. Through the designed rotating seat, bending rod, linkage arm, and correction arm, the system facilitates effective correction of the pallets during transport, ensuring that the pallets remain centered on the conveyor frame during lateral transport and preventing positional shifts. This improves the sealing effect during pallet packaging and prevents reduced packaging seal due to pallet positional shifts.

Description

Technical Field

[0001] This invention relates to the field of deep processing and packaging technology for aquatic products, specifically an automated tray packaging system for shrimp products. Background Technology

[0002] With the continuous expansion of my country's aquatic product consumption market and the gradual improvement of the cold chain logistics system, frozen shrimp products, as the core category of deep processing of aquatic products, have maintained stable growth in market size. It is estimated that by 2030, the domestic market size of high-efficiency frozen shrimp trays will exceed 28 billion yuan. The industry's value focus is gradually shifting to deep processing and standardized packaging. At the same time, the rapid development of fresh food e-commerce, supermarket chains, and ready-made meal channels has put forward higher requirements for the standardization of shrimp product packaging, preservation performance, and food safety. PP food-grade trays, due to their stackability, ease of storage and transportation, and compatibility with modified atmosphere / vacuum preservation processes, have become the mainstream packaging carrier for frozen shrimp meat, seasoned shrimp, whole shrimp, and other products.

[0003] Currently, the production of pallet packaging for shrimp products in China is mainly divided into two technical paths: a semi-automatic mode dominated by manual labor and a general-purpose pallet sealing equipment. Small and medium-sized processing enterprises generally adopt a production mode of manual tray placement, manual weighing, and semi-automatic sealing machine sealing. This mode has a low equipment investment threshold, but the manual operation of a single station packaging efficiency is only about 5-15 packs / minute, and long-term operation in a low-temperature and high-humidity workshop is prone to fatigue, and the production capacity fluctuates significantly with the operation time.

[0004] The inventors of this application discovered in their research that the core defect of the aforementioned prior art is that, in the prior art, the pallet loading and placement process is mostly done manually. Due to the randomness and precision limitations of manual operation, the pallets on the transverse conveyor belt are generally difficult to align precisely with the center position of the conveyor line, which easily leads to positioning deviations such as lateral offset and angular skew. This deviation will be directly transmitted to the subsequent sealing and packaging process, resulting in misalignment between the sealing film and the pallet sealing edge, causing uneven sealing edge width, insufficient unilateral pressing strength, and even problems such as heat sealing misalignment and film wrinkles. This not only significantly reduces the reliability of packaging sealing, but also easily causes quality defects such as air leakage and water seepage in shrimp product packaging, directly affecting the product preservation effect and the finished product qualification rate, resulting in poor overall practicality and production stability. Summary of the Invention

[0005] This invention provides an automated pallet packaging system specifically for shrimp products, which solves the problem in the prior art where pallets are prone to positional deviations during transport, affecting the sealing of subsequent packaging, and achieves the effect of automatic correction during pallet transport.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic tray packaging system specifically for shrimp products, comprising a first conveyor frame, a second conveyor frame distributed on one side of the first conveyor frame, a base frame fixed at the bottom of the second conveyor frame, a first motor fixed at the center of the bottom end of the base frame, a rotating seat connected to the output end of the first motor, a bending rod rotatably connected to the top end of the rotating seat, a first linkage arm rotatably connected to the other end of the bending rod, a second linkage arm rotatably connected to the end of the first linkage arm away from the bending rod, a rotating shaft rotatably connected to the top end of the second linkage arm, a correcting arm sleeved on the outer side of the top end of the rotating shaft, a correcting roller rotatably connected to one end surface of the correcting arm, and a vision sensor fixed to one side of the top end of the second conveyor frame.

[0007] By adopting the above technical solution, the structure of rotating seat, bending rod, linkage arm and straightening arm can be set up to facilitate the effective straightening of pallets during transportation. This ensures that the pallet can always be kept in the center position of the conveyor frame during the transverse transportation process, preventing the pallet from shifting in position. This improves the sealing effect when packaging the pallet and eliminates the situation where the packaging seal is reduced due to the pallet's position shift.

[0008] Preferably, a second motor is fixedly mounted on one end surface of the second conveyor frame, and a first transmission roller is connected to the output end of the second motor. A first conveyor belt is fitted on the outer ring surface of the first transmission roller. A first synchronous pulley is fixedly connected to the end of the first transmission roller away from the second motor. An internal toothed belt is fitted on the outer ring surface of the first synchronous pulley. A second synchronous pulley is connected to the inner side of the other end of the internal toothed belt. A driven roller is fixedly connected to the center of one side of the second synchronous pulley.

[0009] Preferably, a third motor is fixed to one end surface of the first conveyor frame, the output end of the third motor is connected to a second transmission roller, and a second conveyor belt is sleeved on the outer ring surface of the second transmission roller.

[0010] Preferably, a top frame is detachably installed on one side of the top of the first conveyor frame, a cylinder is fixedly installed at the middle of the top of the top of the top frame, the output end of the cylinder is connected to a lower pressure seat, a heat sealing mechanism is fixedly installed at the bottom of the lower pressure seat, and a first guide rod is fixedly installed on one side of the top of the lower pressure seat.

[0011] Preferably, a side frame is distributed on one side of the third motor, a fourth motor is fixedly mounted on the end face of the side frame, a bidirectional screw is connected to the output end of the fourth motor, an adjusting seat is sleeved on the outer ring surface of the bidirectional screw, a stop rod is fixedly mounted on one end of the adjusting seat, and a second guide rod is fixedly mounted on the surface of one end of the stop rod.

[0012] Preferably, one end of the bent rod is rotatably connected to the rotating seat via a bearing seat, and the bent rod is distributed in a circular array along the center point of the rotating seat.

[0013] Preferably, one end of the first linkage arm is rotatably connected to the bent rod via a bearing seat, and the other end of the first linkage arm is rotatably connected to the second linkage arm via a bearing seat.

[0014] Preferably, the upper surface of the top frame has holes with a diameter that matches the outer diameter of the first guide rod, and the first guide rod is arranged in a circular array along the top center point of the lower pressure seat.

[0015] Preferably, the inner side of one end of the adjusting seat is provided with a screw hole whose diameter is adapted to the outer diameter of the bidirectional screw, and the adjusting seat is threadedly connected to the bidirectional screw through the screw hole.

[0016] Preferably, the stop bar is slidably connected to the top frame via the second guide rod, and the bottom inner side of the top frame has a hole with a diameter that matches the outer diameter of the second guide rod.

[0017] This invention provides an automated tray packaging system specifically for shrimp products. It offers the following advantages:

[0018] 1. The present invention, through the design of rotating seats, bending rods, linkage arms and straightening arms, can facilitate the effective straightening of pallets during transport, thereby ensuring that the pallets remain in the center of the conveyor frame during transverse transport, preventing the pallets from shifting position, thus improving the sealing effect when packaging the pallets and preventing the reduction of packaging sealing due to pallet position shift.

[0019] 2. The present invention, through the design of a bidirectional screw, adjusting seat, stop bar, and guide bar, can conveniently limit the position of the pallet during subsequent packaging, ensuring the stability of the pallet during the packaging process. This prevents the pallet from shifting due to the downward pressure of the heat sealing mechanism, which could lead to deviations in subsequent packaging and affect the sealing effect. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a side view schematic diagram of the second conveyor frame of the present invention;

[0022] Figure 3 This is a side view of the base frame of the present invention;

[0023] Figure 4This is a side view of the second synchronous pulley of the present invention;

[0024] Figure 5 This is a bottom view of the rotating base of the present invention;

[0025] Figure 6 This is a side view of the first conveyor frame of the present invention;

[0026] Figure 7 This is a side view of the top frame of the present invention;

[0027] Figure 8 This is a side view of the adjustment seat of the present invention.

[0028] The components include: 1. First conveyor frame; 2. Second conveyor frame; 3. Base frame; 4. First motor; 5. Rotary seat; 6. Bending rod; 7. First linkage arm; 8. Second linkage arm; 9. Rotating shaft; 10. Straightening arm; 11. Straightening roller; 12. Second motor; 13. First transmission roller; 14. First conveyor belt; 15. First synchronous pulley; 16. Internal toothed belt; 17. Second synchronous pulley; 18. Driven roller; 19. Vision sensor; 20. Third motor; 21. Second transmission roller; 22. Second conveyor belt; 23. Top frame; 24. Cylinder; 25. Lower pressure seat; 26. Heat sealing mechanism; 27. First guide rod; 28. Side frame; 29. ​​Fourth motor; 30. Bidirectional screw; 31. Adjusting seat; 32. Stop bar; 33. Second guide rod. Detailed Implementation

[0029] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see the appendix Figure 1 -Appendix Figure 8 This invention provides an automated tray packaging system specifically for shrimp products, including a first conveyor frame 1, a second conveyor frame 2 distributed on one side of the first conveyor frame 1, a base frame 3 fixed at the bottom of the second conveyor frame 2, a first motor 4 fixed at the middle of the bottom end of the base frame 3, a rotating seat 5 connected to the output end of the first motor 4, a bending rod 6 rotatably connected to the top end of the rotating seat 5, a first linkage arm 7 rotatably connected to the other end of the bending rod 6, a second linkage arm 8 rotatably connected to the end of the first linkage arm 7 away from the bending rod 6, a rotating shaft 9 rotatably connected to the top end of the second linkage arm 8, a straightening arm 10 sleeved on the outer side of the top end of the rotating shaft 9, a straightening roller 11 rotatably connected to one end surface of the straightening arm 10, and a vision sensor 19 fixed on one side of the top end of the second conveyor frame 2.

[0031] Specifically, in use, the pallet to be processed is placed on the second conveyor frame 2 beforehand. The internal structure of the second conveyor frame 2 is used to achieve the lateral conveying of the pallet. When the second conveyor frame 2 conveys the pallet past the vision sensor 19, the lateral conveying of the pallet stops. At this time, the first motor 4, which is fixed in the middle of the bottom of the base frame 3, starts to work. As the first motor 4 works, the rotating seat 5 connected to its output end also rotates. The rotation of the rotating seat 5 causes the bent rod 6, which is rotatably connected to its top end via a bearing seat, to move as well. The movement of the bent rod 6 pulls the first linkage arm 7, which is then used to facilitate subsequent operation. The movement of the second linkage arm 8 is achieved by the movement of the second linkage arm 8. At this time, the movement of the second linkage arm 8 will drive the rotating shaft 9, which is fixedly connected to it at the other end, to rotate as well. With the rotation of the rotating shaft 9, it is convenient to drive the straightening arm 10 to rotate as well. Finally, the rotation of the straightening arm 10 will cause the straightening roller 11 to move as well. At this time, all four straightening rollers 11 move toward the pallet. Since the four straightening rollers 11 move synchronously, the position of the pallet can be corrected, so that the pallet can always be on the central axis of the second conveyor frame 2, preventing the pallet from shifting during the conveying process and affecting the subsequent normal packaging.

[0032] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 A second motor 12 is fixedly mounted on one end surface of the second conveyor frame 2. The output end of the second motor 12 is connected to a first transmission roller 13. A first conveyor belt 14 is sleeved on the outer ring surface of the first transmission roller 13. A first synchronous pulley 15 is fixedly connected to the end of the first transmission roller 13 away from the second motor 12. An internal toothed belt 16 is sleeved on the outer ring surface of the first synchronous pulley 15. A second synchronous pulley 17 is connected to the inner side of the other end of the internal toothed belt 16. A driven roller 18 is fixedly connected to the center of one side of the second synchronous pulley 17.

[0033] Specifically, when the pallet to be processed is placed on the first conveyor belt 14 located inside the second conveyor frame 2, the second motor 12 operates, causing the first drive roller 13 connected to its output end to rotate. As the first drive roller 13 rotates, the first conveyor belt 14 moves, facilitating the subsequent lateral transport of the pallet using the movement of the first conveyor belt 14. At the same time, the rotation of the first drive roller 13 causes the first synchronous pulley 15 to rotate as well. The rotation of the first synchronous pulley 15 then causes the internal toothed belt 16 to drive the second synchronous pulley 17 to rotate as well. The rotation of the second synchronous pulley 17 then causes the driven roller 18 to rotate as well. The rotation of the driven roller 18 assists the first conveyor belt 14 in lateral transport, ensuring the stability of the first conveyor belt 14 and effectively preventing insufficient friction between the conveyor belt and the first drive roller 13 due to excessive downward pressure.

[0034] Please see the appendix Figure 1 Appendix Figure 6 and attached Figure 7 A third motor 20 is fixedly mounted on one end surface of the first conveyor frame 1. The output end of the third motor 20 is connected to a second transmission roller 21. A second conveyor belt 22 is sleeved on the outer ring surface of the second transmission roller 21.

[0035] Specifically, during use, the operation of the third motor 20 will cause the second transmission roller 21 connected to its output to rotate. At this time, as the second transmission roller 21 rotates, it will drive the second conveyor belt 22 sleeved on its outer ring surface to move as well, thereby using the movement of the second conveyor belt 22 to perform lateral conveying of the pallet.

[0036] Please see the appendix Figure 6 and attached Figure 7 A top frame 23 is detachably installed on one side of the top of the first conveyor frame 1. A cylinder 24 is fixed in the middle of the top of the top of the top frame 23. The output end of the cylinder 24 is connected to a lower pressure seat 25. A heat sealing mechanism 26 is fixed at the bottom of the lower pressure seat 25. A first guide rod 27 is fixed on one side of the top of the lower pressure seat 25.

[0037] Specifically, as the pallet is conveyed to the bottom of the heat sealing mechanism 26, the cylinder 24 pushes the pressure seat 25 fixedly connected to its bottom longitudinally, causing the pressure seat 25 to press down longitudinally. As the pressure seat 25 moves, the heat sealing mechanism 26 also moves longitudinally, thereby using the heat sealing mechanism 26 to heat seal and package the pallet. At the same time, when the pressure seat 25 moves longitudinally, it will drive the first guide rod 27 to slide along the holes opened on the surface of the top frame 23, thereby improving the stability of the pressure seat 25 during the movement.

[0038] The heat sealing mechanism 26 includes a heat sealing mold execution unit, a pressing drive and guiding unit, a heat insulation and auxiliary positioning unit, and an edge sealing and cutting unit.

[0039] Please see the appendix Figure 6 Appendix Figure 7 and attached Figure 8 A side frame 28 is distributed on one side of the third motor 20. A fourth motor 29 is fixed on the end face of the side frame 28. A bidirectional screw 30 is connected to the output end of the fourth motor 29. An adjusting seat 31 is sleeved on the outer ring surface of the bidirectional screw 30. A stop rod 32 is fixed on one end of the adjusting seat 31. A second guide rod 33 is fixed on one end surface of the stop rod 32.

[0040] Specifically, when it is necessary to clamp and limit the pallet conveyed to the heat sealing mechanism 26, the fourth motor 29 works to make the bidirectional screw 30 connected to its output end rotate. Since the bidirectional screw 30 is connected to the adjusting seat 31 through the threaded groove, the rotation of the bidirectional screw 30 can facilitate the opposite movement of the two adjusting seats 31. The movement of the adjusting seats 31 can drive the two side stops 32 to adjust their positions, thereby using the stops 32 to perform simple clamping and limiting of the pallet, ensuring its stability in the subsequent packaging process.

[0041] It is worth noting that as the stop lever 32 moves, it causes the second guide rod 33 to slide along one side of the bottom of the top frame 23, thereby improving the stability of the stop lever 32 during its movement.

[0042] Please see the appendix Figure 5 One end of the bent rod 6 is rotatably connected to the rotating seat 5 through a bearing seat, and the bent rod 6 is distributed in a ring array along the center point of the rotating seat 5;

[0043] Specifically, when the rotating seat 5 rotates, it will cause the bent rods 6 connected to both sides of its top to move as well. At this time, the movement of the bent rods 6 will pull the first linkage arm 7, which will facilitate the subsequent movement of the second linkage arm 8 by the first linkage arm 7.

[0044] Please see the appendix Figure 5 One end of the first linkage arm 7 is rotatably connected to the bent rod 6 through a bearing seat, and the other end of the first linkage arm 7 is rotatably connected to the second linkage arm 8 through a bearing seat.

[0045] Specifically, as the first linkage arm 7 moves, the second linkage arm 8 will also move, which will facilitate the subsequent use of the movement of the second linkage arm 8 to drive the rotating shaft 9 to rotate.

[0046] Please see the appendix Figure 6 and attached Figure 7The upper surface of the top frame 23 has holes with a diameter that matches the outer diameter of the first guide rod 27. The first guide rod 27 is arranged in a ring array along the top center point of the lower pressure seat 25.

[0047] Specifically, when the lower pressure seat 25 moves longitudinally along the inner side of the top frame 23 under the action of the cylinder 24, the movement of the lower pressure seat 25 can drive the multiple first guide rods 27 arranged in a ring array at its top to move accordingly. At this time, the first guide rods 27 slide along the holes opened on the surface of the top frame 23, thereby improving the stability of the lower pressure seat 25 during longitudinal movement.

[0048] Please see the appendix Figure 8 The inner side of one end of the adjusting seat 31 is provided with a screw hole whose diameter is adapted to the outer diameter of the bidirectional screw 30. The adjusting seat 31 and the bidirectional screw 30 are connected by a thread through the screw hole.

[0049] Specifically, since the bidirectional screw 30 is connected to the adjusting seat 31 by a threaded groove, the spacing between the two adjusting seats 31 can be easily adjusted as the bidirectional screw 30 rotates.

[0050] Please see the appendix Figure 6 Appendix Figure 7 and attached Figure 8 The stop bar 32 is slidably connected to the top frame 23 through the second guide bar 33, and the bottom inner side of the top frame 23 is provided with a hole whose diameter is adapted to the outer diameter of the second guide bar 33;

[0051] Specifically, as the stop lever 32 moves, it causes the second guide rod 33 to slide along the hole opened on one side of the bottom of the top frame 23, thereby improving the stability of the stop lever 32 during its movement.

[0052] Workflow: When the pallet to be processed is placed on the first conveyor belt 14 located inside the second conveyor frame 2, the second motor 12 operates, causing the first drive roller 13 connected to its output end to rotate. As the first drive roller 13 rotates, the first conveyor belt 14 moves, facilitating the subsequent lateral transport of the pallet using the movement of the first conveyor belt 14. At the same time, the rotation of the first drive roller 13 causes the first synchronous pulley 15 to rotate as well. The rotation of the first synchronous pulley 15 then causes the internal toothed belt 16 to drive the second synchronous pulley 17 to rotate as well. The rotation of the second synchronous pulley 17 then causes the driven roller 18 to rotate as well. The rotation of the driven roller 18 assists the first conveyor belt 14 in lateral transport, ensuring the stability of the first conveyor belt 14 and effectively preventing insufficient friction between the conveyor belt and the first drive roller 13 due to excessive downward pressure.

[0053] When the pallet passes the vision sensor 19, the pallet stops being transported laterally. At this time, the first motor 4, which is fixed in the middle of the bottom of the base frame 3, starts to work. As the first motor 4 works, the rotating seat 5 connected to its output end also rotates. The rotation of the rotating seat 5 causes the bent rod 6, which is rotatably connected to its top end through the bearing seat, to move as well. The movement of the bent rod 6 pulls the first linkage arm 7, which facilitates the movement of the second linkage arm 8. The movement of the second linkage arm 8 then drives the rotating shaft 9, which is fixedly connected to its other end, to rotate as well. The rotation of the rotating shaft 9 facilitates the rotation of the straightening arm 10. Finally, the rotation of the straightening arm 10 causes the straightening roller 11 to move as well. At this time, all four straightening rollers 11 move toward the pallet. Since the four straightening rollers 11 move synchronously, the position of the pallet can be corrected, ensuring that the pallet is always on the central axis of the second conveyor frame 2, preventing the pallet from shifting during transport and affecting subsequent normal packaging.

[0054] After correction, the pallet is conveyed to the first conveyor frame 1. At this time, the third motor 20 operates, causing the second transmission roller 21 connected to its output to rotate. As the second transmission roller 21 rotates, it drives the second conveyor belt 22, which is sleeved on its outer ring surface, to move as well. The movement of the second conveyor belt 22 is used to laterally convey the pallet. As the pallet is conveyed to the bottom of the heat sealing mechanism 26, the fourth motor 29 operates, causing the bidirectional screw 30 connected to its output end to rotate. Since the bidirectional screw 30 is threadedly connected to the adjusting seat 31 through the threaded groove, the rotation of the bidirectional screw 30 facilitates the subsequent opposite movement of the two adjusting seats 31. The movement of the adjusting seats 31 drives the two side stops 32 to adjust their positions, thereby using the stops 32 to perform simple limiting and clamping of the pallet, ensuring its stability during the subsequent packaging process.

[0055] Finally, the cylinder 24 pushes the lower pressure seat 25 fixedly connected to its bottom longitudinally, causing the lower pressure seat 25 to press down longitudinally. As the lower pressure seat 25 moves, the heat sealing mechanism 26 also moves longitudinally, thereby using the heat sealing mechanism 26 to heat seal the pallet. At the same time, when the lower pressure seat 25 moves longitudinally, it will drive the first guide rod 27 to slide along the hole opened on the surface of the top frame 23, thereby improving the stability of the lower pressure seat 25 during the movement.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automated tray packaging system specifically for shrimp products, comprising a first conveyor frame (1), characterized in that, A second conveyor (2) is distributed on one side of the first conveyor (1). A base frame (3) is fixed at the bottom of the second conveyor (2). A first motor (4) is fixed at the middle of the bottom end of the base frame (3). A rotating seat (5) is connected to the output end of the first motor (4). A bending rod (6) is rotatably connected to the top of the rotating seat (5). A first linkage arm (7) is rotatably connected to the other end of the bending rod (6). A second linkage arm (8) is rotatably connected to the end of the first linkage arm (7) away from the bending rod (6). A rotating shaft (9) is rotatably connected to the top of the second linkage arm (8). A straightening arm (10) is sleeved on the outer side of the top of the rotating shaft (9). A straightening roller (11) is rotatably connected to the surface of one end of the straightening arm (10). A vision sensor (19) is fixed on one side of the top of the second conveyor (2).

2. The automatic tray packaging system for shrimp products according to claim 1, characterized in that, A second motor (12) is fixedly mounted on one end surface of the second conveyor frame (2). The output end of the second motor (12) is connected to a first transmission roller (13). A first conveyor belt (14) is fitted on the outer ring surface of the first transmission roller (13). A first synchronous pulley (15) is fixedly connected to the end of the first transmission roller (13) away from the second motor (12). An internal toothed belt (16) is fitted on the outer ring surface of the first synchronous pulley (15). A second synchronous pulley (17) is connected to the inner side of the other end of the internal toothed belt (16). A driven roller (18) is fixedly connected to the center of one side of the second synchronous pulley (17).

3. The automatic tray packaging system for shrimp products according to claim 1, characterized in that, A third motor (20) is fixedly mounted on one end surface of the first conveyor frame (1), and the output end of the third motor (20) is connected to a second transmission roller (21). A second conveyor belt (22) is sleeved on the outer ring surface of the second transmission roller (21).

4. The automatic tray packaging system for shrimp products according to claim 3, characterized in that, A top frame (23) is detachably installed on one side of the top of the first conveyor frame (1). A cylinder (24) is fixed in the middle of the top of the top of the top frame (23). The output end of the cylinder (24) is connected to a lower pressure seat (25). A heat sealing mechanism (26) is fixed at the bottom of the lower pressure seat (25). A first guide rod (27) is fixed on one side of the top of the lower pressure seat (25).

5. The automatic tray packaging system for shrimp products according to claim 4, characterized in that, A side frame (28) is distributed on one side of the third motor (20). A fourth motor (29) is fixed on the end face of the side frame (28). A bidirectional screw (30) is connected to the output end of the fourth motor (29). An adjusting seat (31) is sleeved on the outer ring surface of the bidirectional screw (30). A stop rod (32) is fixed on one end of the adjusting seat (31). A second guide rod (33) is fixed on one end surface of the stop rod (32).

6. The automatic tray packaging system for shrimp products according to claim 1, characterized in that, One end of the bent rod (6) is rotatably connected to the rotating seat (5) through a bearing seat, and the bent rod (6) is distributed in a ring array along the center point of the rotating seat (5).

7. The automatic tray packaging system for shrimp products according to claim 1, characterized in that, One end of the first linkage arm (7) is rotatably connected to the bent rod (6) through a bearing seat, and the other end of the first linkage arm (7) is rotatably connected to the second linkage arm (8) through a bearing seat.

8. The automatic tray packaging system for shrimp products according to claim 4, characterized in that, The top frame (23) has holes on its upper surface with a diameter that matches the outer diameter of the first guide rod (27). The first guide rod (27) is arranged in a ring array along the top center point of the lower pressure seat (25).

9. The automatic tray packaging system for shrimp products according to claim 5, characterized in that, The adjusting seat (31) has a screw hole on its inner side at one end, the diameter of which is adapted to the outer diameter of the bidirectional screw (30). The adjusting seat (31) and the bidirectional screw (30) are connected by a thread through the screw hole.

10. The automatic tray packaging system for shrimp products according to claim 5, characterized in that, The stop bar (32) is slidably connected to the top frame (23) through the second guide rod (33), and the bottom inner side of the top frame (23) has a hole with a diameter that matches the outer diameter of the second guide rod (33).

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