A pre-shaping device for vacuuming with a moisture-proof bag

Abstract

The utility model provides a kind of pre-shaping device of cooperation with moisture-proof bag evacuation, it is related to packaging equipment field, including tail flattening mechanism and side shaping mechanism, wherein tail flattening mechanism includes translation assembly, lifting assembly and jaw assembly, side shaping mechanism includes rack, locking assembly and side shaping assembly, the utility model is operated automatically by the cooperation of tail flattening mechanism and side shaping mechanism, effectively replace traditional manual smoothing, support and shaping operation of relying on artificial, the device can be seamlessly linked with automatic conveying line body and vacuum heat sealing equipment, realize the continuous automation operation of moisture-proof bag from loading, positioning, pre-shaping to evacuation heat sealing, eliminate the intermittence and speed limit of manual operation, substantially improve the beat and efficiency of overall packaging production line;Tail flattening mechanism and side shaping mechanism modular degree are high, convenient in existing automatic packaging production line is added and integrated.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment, and in particular to a pre-shaping device for vacuuming moisture-proof bags. Background Technology

[0002] In the process of vacuum-sealing products onto pallets or other containers using moisture-proof bags, pre-shaping is a crucial step. Its main purpose is to shape the tail and sides of the moisture-proof bag before vacuuming, preventing irregular and uneven shrinkage and wrinkling caused by air extraction. Inadequate pre-shaping can easily lead to poor shape after heat sealing, or even heat sealing failure or incomplete sealing due to localized material buildup, severely impacting packaging quality and appearance consistency.

[0003] Currently, this pre-shaping process mainly relies on manual operation. The specific procedure is as follows: the operator manually smooths and straightens the area of ​​the moisture-proof bag awaiting heat sealing, then places it under the sealing strip of a semi-automatic heat-sealing machine for vacuuming and heat sealing. While the machine is vacuuming, the operator needs to manually support, pull, and shape the back of the moisture-proof bag to coordinate with the vacuuming process, manually completing the pre-shaping. This method has significant drawbacks: firstly, production efficiency is low, heavily reliant on the operator's experience and skill; secondly, manual operation is highly random, making it difficult to ensure consistency in the shaping force and shape of each moisture-proof bag, resulting in unstable product quality; and thirdly, when combined with high-speed automated production lines, manual operation has become a bottleneck restricting the improvement of overall production efficiency.

[0004] Therefore, there is an urgent need for a device that can replace manual labor and achieve automated pre-shaping, in order to solve the problems of low efficiency, poor consistency, and difficulty in integration with automated production lines in existing technologies. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a pre-shaping device for vacuuming moisture-proof bags. This utility model effectively replaces the traditional manual leveling, supporting and shaping operations that rely on manual labor through the coordinated automatic operation of the tail leveling mechanism and the side shaping mechanism. This device can be seamlessly connected with automated conveyor lines and vacuum heat sealing equipment to realize continuous automated operation of moisture-proof bags from feeding, positioning, pre-shaping to vacuum heat sealing, eliminating the intermittency and speed limitations of manual operation, and greatly improving the cycle time and efficiency of the overall packaging production line.

[0006] This utility model is achieved through the following technical solution: A pre-shaping device for vacuuming moisture-proof bags includes a tail leveling mechanism and a side shaping mechanism. The tail leveling mechanism is disposed on the side of a conveyor line for conveying moisture-proof bags, and the side shaping mechanism is disposed directly above the conveyor line. The tail leveling mechanism includes a translation component, a lifting component, and a gripper component. The translation component drives the lifting component and the gripper component to translate along the direction perpendicular to the conveyor line. The lifting component drives the gripper component to move up and down. The gripper component is used to grip the tail of the moisture-proof bag. The gripper component, translation component, and lifting component work together to level the tail of the moisture-proof bag. The side shaping mechanism includes a frame, a locking component, and a side shaping component. Both the locking component and the side shaping component are arranged on the frame. The locking component is used to vertically lock the moisture-proof bag onto the conveyor line, and the side shaping component is used to shape the sides of the moisture-proof bag.

[0007] According to the above technical solution, preferably, the locking component includes a first vertical cylinder and a pressure plate. The fixed part of the first vertical cylinder is fixedly connected to the frame, and the free end of the first vertical cylinder is fixedly connected to the pressure plate. The first vertical cylinder drives the pressure plate to press against the upper side of the moisture-proof bag.

[0008] According to the above technical solution, preferably, the side shaping component includes a lifting plate, a second vertical cylinder, and two sets of roller shaping units. The second vertical cylinder drives the lifting plate to slide up and down. The two sets of roller shaping units are symmetrically arranged on both sides of the lifting plate. Each roller shaping unit includes a connecting plate, shaping rollers, and a first horizontal cylinder. The upper end of the connecting plate is hinged to the lifting plate, and the shaping rollers are connected to the lower end of the connecting plate. The fixed part of the first horizontal cylinder is fixedly connected to the lifting plate, and the free end of the first horizontal cylinder is connected to the connecting plate.

[0009] According to the above technical solution, preferably, the side shaping component further includes a self-locking unit, which includes a third vertical cylinder, a locking device, and a guide rod. The lower end of the guide rod is fixedly connected to the pressure plate, and the guide rod is slidably connected to the lifting plate, the frame, and the locking device. The fixed part of the third vertical cylinder is fixedly connected to the frame, and the free end of the third vertical cylinder is fixedly connected to the locking device. The locking device is used to lock and limit the guide rod and the pressure plate.

[0010] As can be seen, in the above technical solution, the locking component is first pressed and positioned, and after the shaping is completed, the self-locking unit can lock the position of the pressure plate, allowing the moisture-proof bag to shrink evenly in a limited space during the subsequent vacuuming process, effectively matching the dynamic process requirements of vacuum packaging and avoiding the uncertainty of manual operation.

[0011] According to the above technical solution, preferably, the translation component includes a horizontal slide unit and a second horizontal cylinder, the lower end of the lifting component is fixedly connected to the horizontal sliding part of the horizontal slide unit, and the second horizontal cylinder horizontally pushes and pulls the lifting component and the gripper component.

[0012] According to the above technical solution, preferably, the lifting assembly includes a fourth vertical cylinder and a vertical slide unit, the gripper assembly is fixedly connected to the vertical sliding part of the vertical slide unit, and the fourth vertical cylinder pushes and pulls the gripper assembly vertically.

[0013] According to the above technical solution, preferably, the gripper assembly includes a gripper cylinder and two sets of leveling grippers, wherein the gripper cylinder drives the two sets of leveling grippers to open and close to level the tail of the moisture-proof bag.

[0014] The beneficial effects of this utility model are: (1) This utility model effectively replaces the traditional manual leveling, support and shaping operation that relies on manual labor through the coordinated automatic operation of the tail leveling mechanism and the side shaping mechanism. The device can be seamlessly connected with the automated conveyor line and vacuum heat sealing equipment to realize the continuous automated operation of the moisture-proof package from feeding, positioning, pre-shaping to vacuum heat sealing, eliminating the intermittent and speed limitations of manual operation, and greatly improving the rhythm and efficiency of the overall packaging production line. (2) The gripper assembly, translation assembly and lifting assembly work together precisely according to the preset program to complete the gripping, smoothing and fixing of the tail of the moisture-proof bag; at the same time, the side shaping assembly uses two sets of roller shaping units to symmetrically and evenly roll and smooth the two sides of the moisture-proof bag. The entire pre-shaping process is precisely controlled by the mechanical structure. The force, stroke and timing are constant and reliable, which effectively avoids product differences caused by uneven force and different techniques in manual operation. It ensures that each moisture-proof bag can reach a highly consistent and regular initial shape before vacuuming, thereby ensuring the appearance and quality stability of the final vacuum-packed product. (3) The tail leveling mechanism and side shaping mechanism of this utility model are highly modular, making it easy to install and integrate in existing automated packaging production lines. Attached Figure Description

[0015] Figure 1 A schematic diagram of an isometric structure according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of another isometric structure according to an embodiment of the present invention is shown; Figure 3 A front view structural schematic diagram according to an embodiment of the present invention is shown; Figure 4 A right-side structural schematic diagram according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the left-side structure according to an embodiment of the present invention is shown; Explanation of reference numerals in the attached figures: 1. Tail leveling mechanism; 2. Side shaping mechanism; 3. Translation assembly; 4. Lifting assembly; 5. Gripper assembly; 6. Horizontal slide unit; 7. Second horizontal cylinder; 8. Fourth vertical cylinder; 9. Vertical slide unit; 10. Gripper cylinder; 11. Leveling gripper; 12. Frame; 13. Locking assembly; 14. Side shaping assembly; 15. First vertical cylinder; 16. Pressure plate; 17. Lifting plate; 18. Second vertical cylinder; 19. Connecting plate; 20. Shaping roller; 21. First horizontal cylinder; 22. Third vertical cylinder; 23. Locking device; 24. Guide rod. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and preferred embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] In the description of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0018] As shown in the figure, this utility model provides a pre-shaping device for vacuuming moisture-proof bags, including a tail leveling mechanism 1 and a side shaping mechanism 2. The tail leveling mechanism 1 is arranged on the side of the conveyor line used to transport the moisture-proof bags, and the side shaping mechanism 2 is arranged directly above the conveyor line. The tail leveling mechanism 1 includes a translation component 3, a lifting component 4, and a gripper component 5. The translation component 3 drives the lifting component 4 and the gripper component 5 to move horizontally along the direction perpendicular to the conveyor line. The lifting component 4 drives the gripper component 5 to move up and down. The gripper component 5 is used to grip the tail of the moisture-proof bag. The gripper component 5, the translation component 3, and the lifting component 4 work together to level the tail of the moisture-proof bag. The translation component 3 includes a horizontal slide unit 6 and a second horizontal cylinder 7. The lower end of the lifting component 4 is connected to the horizontal slide unit 6. The horizontal sliding part of the platform unit 6 is fixedly connected, the second horizontal cylinder 7 horizontally pushes and pulls the lifting assembly 4 and the gripper assembly 5, and the lifting assembly 4 includes the fourth vertical cylinder 8 and the vertical slide unit 9. The gripper assembly 5 is fixedly connected to the vertical sliding part of the vertical slide unit 9. The fourth vertical cylinder 8 vertically pushes and pulls the gripper assembly 5. In addition, the gripper assembly 5 includes the gripper cylinder 10 and two sets of smoothing grippers 11. The gripper cylinder 10 drives the two sets of smoothing grippers 11 to open and close to smooth the tail of the moisture-proof bag. The side shaping mechanism 2 includes a frame 12, a locking assembly 13, and a side shaping assembly 14. Both the locking assembly 13 and the side shaping assembly 14 are mounted on the frame 12. The locking assembly 13 vertically locks the moisture-proof bag onto the conveyor line, while the side shaping assembly 14 shapes the sides of the moisture-proof bag. The locking assembly 13 includes a first vertical cylinder 15 and a pressure plate 16. The fixed part of the first vertical cylinder 15 is fixedly connected to the frame 12, and the free end of the first vertical cylinder 15 is fixedly connected to the pressure plate 16. The first vertical cylinder 15 drives the pressure plate 16 to press against the upper side of the moisture-proof bag. The side shaping assembly 14 includes a lifting plate 17, a second vertical cylinder 18, and two sets of roller shaping units. The second vertical cylinder 18 drives the lifting plate 17 to slide up and down, and the two sets of roller shaping units are symmetrically arranged on both sides of the lifting plate 17. The roller shaping unit includes a connecting plate 19, a shaping roller 20, and a first horizontal cylinder 21. The upper end of the connecting plate 19 is hinged to the lifting plate 17, the shaping roller 20 is connected to the lower end of the connecting plate 19, the fixed part of the first horizontal cylinder 21 is fixedly connected to the lifting plate 17, and the free end of the first horizontal cylinder 21 is connected to the connecting plate 19.

[0019] This invention effectively replaces the traditional manual leveling, supporting, and shaping operations by coordinating the automatic operation of the tail leveling mechanism 1 and the side shaping mechanism 2. This device can seamlessly connect with automated conveyor lines and vacuum heat-sealing equipment, realizing continuous automated operation of the moisture-proof package from feeding, positioning, pre-shaping to vacuum heat sealing. It eliminates the intermittent nature and speed limitations of manual operation, significantly improving the cycle time and efficiency of the overall packaging production line. The gripper assembly 5, translation assembly 3, and lifting assembly 4 precisely cooperate according to a preset program to complete the gripping, leveling, and fixing of the tail of the moisture-proof package; simultaneously, the side shaping... Component 14 uses two sets of roller shaping units to symmetrically and evenly roll and flatten both sides of the moisture-proof bag. The entire pre-shaping process is precisely controlled by a mechanical structure, with constant and reliable force, stroke, and timing. This effectively avoids product differences caused by uneven force and inconsistent techniques during manual operation, ensuring that each moisture-proof bag achieves a highly consistent and regular initial shape before vacuuming, thereby guaranteeing the aesthetic appearance and stable quality of the final vacuum-packed product. The tail flattening mechanism 1 and the side shaping mechanism 2 of this utility model are highly modular, making it easy to add and integrate into existing automated packaging production lines. Optionally, in one possible implementation, the side shaping assembly 14 further includes a self-locking unit, which includes a third vertical cylinder 22, a locking device 23, and a guide rod 24. The lower end of the guide rod 24 is fixedly connected to the pressure plate 16, and the guide rod 24 is slidably connected to the lifting plate 17, the frame 12, and the locking device 23. The fixed part of the third vertical cylinder 22 is fixedly connected to the frame 12, and the free end of the third vertical cylinder 22 is fixedly connected to the locking device 23. The locking device 23 is used to lock and limit the guide rod 24 and the pressure plate 16. The locking assembly 13 first presses and positions the package. After the shaping is completed, the self-locking unit can lock the position of the pressure plate 16, allowing the moisture-proof package to shrink evenly within a limited space during the subsequent vacuuming process, effectively matching the dynamic process requirements of vacuum packaging and avoiding the uncertainty of manual operation.

[0020] Work process: Pressing and positioning stage: The first vertical cylinder 15 of the locking component 13 is activated, driving the pressure plate 16 at its lower end to move downward until the top of the moisture-proof bag is stably pressed onto the conveyor line. Tail leveling stage: The gripper cylinder 10 in the gripper assembly 5 of the tail leveling mechanism 1 is activated, driving the two sets of smoothing grippers 11 to close and clamp the tail of the moisture-proof bag; then, the fourth vertical cylinder 8 in the lifting assembly 4 drives the gripper assembly 5 to descend, while the second horizontal cylinder 7 in the translation assembly 3 drives the gripper assembly 5 to retract, thereby smoothing the tail of the moisture-proof bag. This smoothing action is repeated twice; finally, the gripper assembly 5 remains in the clamping state.

[0021] Side shaping stage: The second vertical cylinder 18 drives the lifting plate 17 to descend, which in turn drives the roller shaping units symmetrically arranged on both sides of it to descend; then, the first horizontal cylinder 21 in each roller shaping unit extends and pushes the connecting plate 19 to swing inward around the hinge point, so that the shaping roller 20 presses the moisture-proof bag from both sides; subsequently, the second vertical cylinder 18 drives the lifting plate 17 to rise, and the shaping roller 20 rolls upward to flatten the side of the moisture-proof bag; Position locking and vacuuming stage: After the side shaping is completed, the self-locking unit is activated; the third vertical cylinder 22 drives the locking device 23 to move to the locking position, locking the guide rod 24 fixedly connected to the pressure plate 16; then, the first vertical cylinder 15 drives the pressure plate 16 to rise slightly, and its rising height is limited by the locking device 23; at this time, a space that allows limited shrinkage is formed between the pressure plate 16 and the top of the moisture-proof bag, and the vacuum heat sealer then performs a vacuuming operation, and the moisture-proof bag shrinks evenly in this space.

[0022] Reset and release stage: After heat sealing is completed, the locker 23 is released, the pressure plate 16 rises and resets completely; the gripper cylinder 10 opens, releasing the tail of the moisture-proof bag, and each component resets to its initial position; the shaped moisture-proof bag moves out with the conveyor line.

[0023] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A pre-shaping device for use with a moisture-proof bag for vacuuming, characterized in that, The system includes a tail leveling mechanism and a side shaping mechanism. The tail leveling mechanism is located on the side of the conveyor line used to transport the moisture-proof package, and the side shaping mechanism is located directly above the conveyor line. The tail leveling mechanism includes a translation component, a lifting component, and a gripper component. The translation component drives the lifting component and the gripper component to translate along the direction perpendicular to the conveyor line. The lifting component drives the gripper component to move up and down. The gripper component is used to grip the tail of the moisture-proof bag. The gripper component, translation component, and lifting component work together to level the tail of the moisture-proof bag. The side shaping mechanism includes a frame, a locking component, and a side shaping component. Both the locking component and the side shaping component are arranged on the frame. The locking component is used to vertically lock the moisture-proof bag onto the conveyor line, and the side shaping component is used to shape the sides of the moisture-proof bag.

2. The pre-shaping device for vacuuming a moisture-proof bag according to claim 1, characterized in that, The locking assembly includes a first vertical cylinder and a pressure plate. The fixed part of the first vertical cylinder is fixedly connected to the frame, and the free end of the first vertical cylinder is fixedly connected to the pressure plate. The first vertical cylinder drives the pressure plate to press against the upper side of the moisture-proof bag.

3. The pre-shaping device for vacuuming a moisture-proof bag according to claim 2, characterized in that, The side shaping assembly includes a lifting plate, a second vertical cylinder, and two sets of roller shaping units. The second vertical cylinder drives the lifting plate to slide up and down. The two sets of roller shaping units are symmetrically arranged on both sides of the lifting plate. Each roller shaping unit includes a connecting plate, shaping rollers, and a first horizontal cylinder. The upper end of the connecting plate is hinged to the lifting plate, and the shaping rollers are connected to the lower end of the connecting plate. The fixed part of the first horizontal cylinder is fixedly connected to the lifting plate, and the free end of the first horizontal cylinder is connected to the connecting plate.

4. The pre-shaping device for vacuuming a moisture-proof bag according to claim 3, characterized in that, The side shaping assembly also includes a self-locking unit, which includes a third vertical cylinder, a locking device, and a guide rod. The lower end of the guide rod is fixedly connected to the pressure plate, and the guide rod is slidably connected to the lifting plate, the frame, and the locking device. The fixed part of the third vertical cylinder is fixedly connected to the frame, and the free end of the third vertical cylinder is fixedly connected to the locking device. The locking device is used to lock and limit the guide rod and the pressure plate.

5. The pre-shaping device for vacuuming a moisture-proof bag according to claim 1, characterized in that, The translation component includes a horizontal slide unit and a second horizontal cylinder. The lower end of the lifting component is fixedly connected to the horizontal sliding part of the horizontal slide unit. The second horizontal cylinder horizontally pushes and pulls the lifting component and the gripper component.

6. The pre-shaping device for vacuuming a moisture-proof bag according to claim 5, characterized in that, The lifting assembly includes a fourth vertical cylinder and a vertical slide unit. The gripper assembly is fixedly connected to the vertical sliding part of the vertical slide unit, and the fourth vertical cylinder pushes and pulls the gripper assembly vertically.

7. A pre-shaping device for vacuuming a moisture-proof bag according to claim 6, characterized in that, The gripper assembly includes a gripper cylinder and two sets of leveling grippers. The gripper cylinder drives the two sets of leveling grippers to open and close to level the tail of the moisture-proof bag.

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