Automatic roll dividing machine for vacuum freshness protection bags
By designing the support frame and motor drive structure of the automatic slitting machine, the problem of cumbersome paper roll feeding in vacuum preservation bag slitting machines has been solved, achieving a fast and stable slitting process and improving overall efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-04-03
AI Technical Summary
Existing slitting machines are not convenient for quickly feeding paper rolls when slitting vacuum food storage bags, resulting in cumbersome operation and affecting overall efficiency.
An automatic vacuum preservation bag rewinding machine was designed, comprising a support frame, unwinding roller, turntable, transmission rod, cutting slide, cutting blade, and storage box. Through the cooperation of a shift motor, a power motor, and a transmission motor, the machine achieves automatic feeding and rapid rewinding of paper rolls. The design of a limit push rod and a torsion spring ensures tight rewinding, and the cutting blade enables automatic cutting.
It enables automatic feeding and rapid rewinding of paper rolls, improving operational convenience and overall work efficiency, reducing manual intervention, and ensuring the continuity and stability of the rewinding process.
Smart Images

Figure CN224076708U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rewinding machine technology, specifically an automatic rewinding machine for vacuum preservation bags. Background Technology
[0002] Food storage bags, primarily made of food-grade plastic wrap, are widely used for preserving vegetables, fruits, grains, cooked food, and other foods. They are categorized by material, including polyethylene (PE), polyvinyl chloride (PVC), and polyvinyl chloride (PVDC). With the development of food storage bags, products such as vacuum-sealed and self-sealing bags have also emerged. Vacuum-sealed bags require unpacking during production, necessitating the use of automatic rewinding machines. However, existing rewinding machines still have some issues.
[0003] However, existing slitting machines are not convenient for quickly feeding paper rolls when slitting vacuum food storage bags, requiring manual operation, which is relatively cumbersome and affects the overall slitting efficiency.
[0004] Therefore, we proposed an automatic vacuum preservation bag rewinding machine to solve the problems mentioned above. Utility Model Content
[0005] The purpose of this invention is to provide an automatic vacuum preservation bag rewinding machine to solve the problems mentioned in the background art, such as the inconvenience of quickly feeding paper rolls and the cumbersome operation affecting the rewinding efficiency of existing rewinding machines.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic vacuum preservation bag rewinding machine, comprising a support frame and an unwinding roller rotatably mounted at the upper end, wherein a labeling module is provided at the upper front side of the support frame, the labeling module being used to attach labels and position the preservation bags:
[0007] A turntable is provided on the left side of the support frame, and a transmission rod is connected to the right side of the turntable. A cutting slide is connected to the middle of the support frame, and a cutting blade is connected to the side of the cutting slide.
[0008] A storage box is fixed on the right side of the support frame, and a limit tube is connected to the lower end of the storage box. A feeding roller is installed inside the limit tube. A feeding slide is installed at the lower rear end of the support frame, and a feeding lever is connected to the upper end of the feeding slide.
[0009] The upper front end of the support frame is fixed with a first slide, and the upper end of the first slide is connected to a second slide, the upper end of the second slide being connected to the labeling module.
[0010] Preferably, the turntable is rotatably connected to the support frame, a shifting motor is fixed on the left side of the support frame, and the right shaft end of the shifting motor passes through the support frame and is connected to the turntable.
[0011] Using the above technical solution, the rotating turntable can be driven by the shifting motor to cut the positions of multiple sets of transmission rods.
[0012] Preferably, the turntable is rotatably connected to the transmission rod, and the transmission rod is arranged in a ring array with the center of the turntable as the axis, and the outer wall of the middle part of the transmission rod is provided with strip-shaped protrusions.
[0013] By adopting the above technical solution, the protrusions on the outer wall of the transmission rod can increase the friction and improve the installation stability of the paper roll.
[0014] Preferably, a power motor is fixed to the inner wall of the left side of the support frame, and a rubber roller is connected to the right side of the power motor, with the rubber roller in contact with the outer wall of the transmission rod.
[0015] Using the above technical solution, through the cooperation of the power motor and the rubber roller, the transmission rod can be driven to rotate and rewind after contacting the rubber roller.
[0016] Preferably, a limiting rod is fixed to the upper front side of the support frame, and a positioning plate is rotatably connected to the middle of the limiting rod. A limiting push rod is fixed to the front end of the positioning plate, and the lower end of the limiting push rod is connected to the limiting plate. Torsion springs are sleeved on both sides of the limiting rod, and the two ends of the torsion springs are respectively connected to the limiting rod and the positioning plate.
[0017] Using the above technical solution, the limiting push rod can push the limiting plate to contact the outer wall of the paper roll, keeping the food storage bag tightly rolled up. In addition, the design of the torsion spring allows the limiting plate to move with the change in the diameter of the food storage bag roll during the rolling process.
[0018] Preferably, the cutting slide is located below the unwinding roller, and the cutting slide is slidably connected to the cutting blade.
[0019] By adopting the above technical solution, the cutting blade and the cutting slide can be used to facilitate the cutting and severing of the food preservation bag after it has been rolled up.
[0020] Preferably, the upper rear end of the limiting tube has a notch and the upper rear end of the limiting tube is connected to the storage box. The feeding roller is rotatably connected to the outer wall of the support frame. A drive motor is fixed on the inner right side of the support frame and the right shaft end of the drive motor is connected to the feeding roller. The feeding roller has a limiting groove in an annular array on its outer wall.
[0021] The support frame has a hole on the right side, and the feeding slide passes through the hole. The feeding slide is slidably connected to a feeding block on its side. The lower end of the limiting tube has a sliding groove, and the upper end of the feeding block extends into the limiting groove. The upper end of the feeding block has a ring-shaped design.
[0022] Using the above technical solution, the drive motor can drive the feeding roller to rotate and continuously transfer the paper roll inside the storage box to the limiting tube. The feeding slide and feeding lever can be used to push the paper roll to move and achieve rapid feeding.
[0023] Preferably, a feeding slide is fixed at the bottom of the support frame, and a feeding lever is slidably connected to the upper end of the feeding slide. The feeding lever is slidably connected to the feeding slide, and the upper end of the feeding lever is arc-shaped. A feeding hole is opened at the lower right end of the support frame, and the feeding hole corresponds to the position of the feeding slide. A collection box is fixed on the right side of the support frame.
[0024] By adopting the above technical solution, through the cooperation of the feeding slide and the feeding lever, the paper roll can be transferred to the lower end after the safety belt is split and then fed by the movement of the feeding lever.
[0025] Compared with the prior art, the beneficial effects of this utility model are: the automatic vacuum preservation bag rewinding machine; by setting a fast feeding structure for paper rolls, it can actively and continuously feed paper rolls when performing rewinding operations on preservation bags, without manual operation, and in conjunction with the unloading structure of the preservation bag roll after winding, it can improve the convenience of operation and the efficiency of the overall operation. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0027] Figure 2 This is a schematic diagram of the support frame and labeling module structure of this utility model;
[0028] Figure 3 This is a schematic diagram of the positioning block and limiting push rod structure of this utility model;
[0029] Figure 4 This is a schematic diagram of the feeding roller and limiting groove of this utility model;
[0030] Figure 5 This is a schematic diagram of the turntable and transmission rod structure of this utility model.
[0031] In the diagram: 1. Support frame; 2. Unwinding roller; 3. Turntable; 4. Positioning motor; 5. Transmission rod; 6. Cutting slide; 7. Cutting blade; 8. Storage box; 9. Feeding roller; 10. Limiting tube; 11. Limiting groove; 12. Transmission motor; 13. Feeding slide; 14. Feeding lever; 15. Unloading slide; 16. Unloading lever; 17. Collection box; 18. Limiting rod; 19. Positioning plate; 20. Limiting push rod; 21. Limiting plate; 22. Torsion spring; 23. Power motor; 24. First slide; 25. Second slide; 26. Labeling module. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Please see Figure 1-5 This utility model provides a technical solution: an automatic vacuum preservation bag rewinding machine, including a support frame 1 and a rewinding roller 2 rotatably mounted on the upper end. A labeling module 26 is provided on the upper front side of the support frame 1. The labeling module 26 is used to attach labels and position the preservation bags. A turntable 3 is provided on the left side of the support frame 1, and a transmission rod 5 is connected to the right side of the turntable 3. A first slide 24 is fixed on the upper front side of the support frame 1, and a second slide 25 is connected to the upper end of the first slide 24. The upper end of the second slide 25 is connected to the labeling module 26. The transmission rod 5 is positioned and installed by the turntable 3. When rewinding, the paper roll can be placed outside the transmission rod 5. First, the labeling module 26 is adjusted to a suitable position using the first slide 24 and the second slide 25. Before rewinding, the labeling module 26 is controlled to move backward to attach the label to the end of the preservation bag and the outer wall of the paper roll, positioning the preservation bag and the paper roll. Then, the transmission rod 5 is controlled to rotate to achieve winding. After winding, the label can be reattached to prevent the preservation bag from loosening.
[0034] Turntable 3 is rotatably connected to support frame 1. A shift motor 4 is fixed on the left side of support frame 1, and the right shaft end of shift motor 4 passes through support frame 1 and connects to turntable 3. Turntable 3 is rotatably connected to transmission rod 5, and transmission rod 5 is distributed in a ring array around the center of turntable 3. A strip-shaped protrusion is provided on the outer wall of the middle part of transmission rod 5. A power motor 23 is fixed on the inner wall of the left side of support frame 1, and a rubber roller is connected to the right side of power motor 23. The rubber roller is in contact with the outer wall of transmission rod 5. Shift motor 4 can drive turntable 3 to rotate and change the position of multiple sets of transmission rod 5, which can realize continuous winding operation. When the plastic bag and paper roll are positioned, the power motor 23 can drive the rubber roller to rotate, and the transmission power is released from the transmission rod 5 through the rubber roller, providing a power source for the rotation and winding of transmission rod 5. After the transmission rod 5 rotates, another set of transmission rod 5 is switched to contact the rubber roller.
[0035] A cutting slide 6 is connected to the middle of the support frame 1, and a cutting blade 7 is connected to the side of the cutting slide 6; a limit rod 18 is fixed to the upper front side of the support frame 1, and a positioning plate 19 is rotatably connected to the middle of the limit rod 18, and a limit push rod 20 is fixed to the front end of the positioning plate 19, and a limit plate 21 is connected to the lower end of the limit push rod 20; torsion springs 22 are sleeved on both sides of the limit rod 18, and the two ends of the torsion springs 22 are respectively connected to the limit rod 18 and the positioning plate 19; the cutting slide 6 is located below the unwinding roller 2, and the cutting slide 6 and the cutting blade 7 are connected to each other. Sliding connection; when rewinding, the limiting push rod 20 can be used to push the limiting plate 21 downward and contact the outside of the paper roll, thereby maintaining contact with the rolled-up food storage bag, maintaining a certain squeezing force, ensuring the tightness of the food storage bag roll, and using the design of the torsion spring 22, the limiting plate 21, the positioning plate 19 and the limiting push rod 20 can rotate, avoiding motion interference caused by the change in diameter of the food storage bag during roll-up, and after the rewinding is completed, the cutting slide 6 drives the cutting blade 7 to move horizontally to cut the food storage bag.
[0036] A storage box 8 is fixed on the right side of the support frame 1, and a limiting tube 10 is connected to the lower end of the storage box 8. A feeding roller 9 is installed inside the limiting tube 10. A feeding slide 13 is installed at the lower rear side of the support frame 1, and a feeding lever 14 is connected to the upper end of the feeding slide 13. A notch is opened at the upper rear side of the limiting tube 10, and the upper rear side of the limiting tube 10 is connected to the storage box 8. The feeding roller 9 is rotatably connected to the outer wall of the support frame 1. A drive motor 12 is fixed on the inner right side of the support frame 1, and the right shaft end of the drive motor 12 is connected to the feeding roller 9. A limiting groove 11 is opened in a ring array on the outer wall of the feeding roller 9. A hole is opened on the right side of the support frame 1, and the feeding slide 13 passes through the hole. The feeding lever 14 is slidably connected to the side of the feeding slide 13. A groove is opened at the lower end of the limiting tube 10, and the upper end of the feeding lever 14 extends into the limiting groove 11. The upper end of the feeding lever 14 is designed in a ring shape. The bottom of the support frame 1 is fixed with a feeding slide 15, and the upper end of the feeding slide 15 is slidably connected with a feeding lever 16. The feeding lever 16 is slidably connected with the feeding slide 15, and the upper end of the feeding lever 16 is arc-shaped. A feeding hole is opened at the lower right end of the support frame 1, and the feeding hole corresponds to the position of the feeding slide 15. A collection box 17 is fixed on the right side of the support frame 1. The storage box 8 can be used to collect paper rolls. When the drive motor 12 drives the feeding roller 9 to rotate, it can continuously drive the paper roll to move into the limiting tube 10. When it moves to the bottom of the limiting tube 10, the feeding slide 13 can drive the feeding block 14 to move and push the paper roll to the left and fit it on the outside of the transmission rod 5 at a designated position. The protrusion on the outer wall of the transmission rod 5 can increase the friction when connected with the paper roll and maintain stable transmission. When the paper roll is finished winding, it moves to the lower end of the transmission rod 5. The feeding slide 15 controls the feeding block 16 to move and push the split-wound food storage bag from the feeding hole into the collection box 17.
[0037] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0038] 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A vacuum preservation bag automatic winding machine, comprising a support frame (1) and an unwinding roller (2) rotatably installed at the upper end of the support frame (1), and a labeling module (26) is arranged at the upper end of the front side of the support frame (1), and the labeling module (26) is used for attaching labels to position the preservation bags, characterized in that: a rotating disc (3) is arranged on the left side of the support frame (1), and a transmission rod (5) is connected to the right side of the rotating disc (3); a cutting sliding table (6) is connected to the middle of the support frame (1), and a cutting knife (7) is connected to the side of the cutting sliding table (6); a storage box (8) is fixed to the right side of the support frame (1), a limiting tube (10) is connected to the lower end of the storage box (8), and an upper feeding roller (9) is arranged in the limiting tube (10); an upper feeding sliding table (13) is installed at the lower end of the rear side of the support frame (1), and an upper feeding block (14) is connected to the upper end of the upper feeding sliding table (13); a first sliding table (24) is fixed to the upper end of the front side of the support frame (1), a second sliding table (25) is connected to the upper end of the first sliding table (24), and the second sliding table (25) is connected to the labeling module (26) at the upper end; the rotating disc (3) is rotatably connected to the support frame (1), a transposition motor (4) is fixed to the left side of the support frame (1), and the right shaft end of the transposition motor (4) penetrates the support frame (1) and is connected to the rotating disc (3); the rotating disc (3) is rotatably connected to the transmission rod (5), the transmission rod (5) is arranged in an annular array around the center of the rotating disc (3), and a strip-shaped protrusion is arranged on the outer wall of the middle of the transmission rod (5); a power motor (23) is fixed to the inner wall of the left side of the support frame (1), a rubber roller is connected to the right side of the power motor (23), and the rubber roller is in contact with the outer wall of the transmission rod (5); a limiting rod (18) is fixed to the upper end of the front side of the support frame (1), a positioning plate (19) is rotatably connected to the middle of the limiting rod (18), a limiting push rod (20) is fixed to the front end of the positioning plate (19), a limiting plate (21) is connected to the lower end of the limiting push rod (20), torsion springs (22) are arranged on both sides of the limiting rod (18), and the two ends of each torsion spring (22) are connected to the limiting rod (18) and the positioning plate (19), respectively; the cutting sliding table (6) is arranged below the unwinding roller (2), and the cutting sliding table (6) is slidably connected to the cutting knife (7); a notch is formed in the upper end of the rear side of the limiting tube (10), the upper end of the rear side of the limiting tube (10) is in communication with the storage box (8), the upper feeding roller (9) is rotatably connected to the outer wall of the support frame (1), a transmission motor (12) is fixed to the inner wall of the right side of the support frame (1), the right shaft end of the transmission motor (12) is connected to the upper feeding roller (9), and a limiting groove (11) is formed in an annular array on the outer wall of the upper feeding roller (9); a hole is formed in the right side of the support frame (1), the upper feeding sliding table (13) penetrates the inside of the hole, the upper feeding sliding table (13) is slidably connected to the upper feeding block (14), a sliding groove is formed in the lower end of the limiting tube (10), the upper end of the upper feeding block (14) extends into the inside of the limiting groove (11), and the upper end of the upper feeding block (14) is designed in a ring shape. 2. The automatic roll machine for vacuum preservation bags according to claim 1, characterized in that: 3. The automatic roll machine for vacuum preservation bags according to claim 2, characterized in that: 4. The automatic roll machine for vacuum fresh-keeping bags according to claim 1, characterized in that: 5. The automatic roll machine for vacuum fresh-keeping bags according to claim 4, characterized in that: 6. The automatic roll machine for vacuum fresh-keeping bags according to claim 1, characterized in that: 7. The automatic roll machine for vacuum fresh-keeping bags according to claim 1, characterized in that: 8. The automatic roll machine for vacuum fresh-keeping bags according to claim 1, characterized in that: The bottom of the support frame (1) is fixed with a blanking sliding table (15), and the upper end of the blanking sliding table (15) is slidably connected with a blanking block (16). The blanking block (16) is slidably connected with the blanking sliding table (15), and the upper end of the blanking block (16) is designed in an arc shape. A blanking hole is formed in the right lower end of the support frame (1), and the blanking hole corresponds in position to the blanking sliding table (15). The right side of the support frame (1) is fixed with a collecting box (17).