A packaging bag cutting device
By introducing a combination structure of movable rod and rubber roller in the packaging bag cutting device, as well as corrugated rubber sleeves and pressing devices on both sides of the cutter, the problem of lateral wrinkles during packaging bag cutting is solved, and flat cutting of packaging bags is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN TONGYING PAPER BAG CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-29
AI Technical Summary
Existing packaging bag cutting devices are unable to effectively avoid lateral wrinkles during cutting, resulting in poor cutting results.
A packaging bag cutting device was designed. By setting movable rods and rubber rollers on both sides of the lifting plate, and cooperating with the return spring, the packaging bag is horizontally leveled. Corrugated rubber sleeves and compression springs are set on both sides of the cutter to ensure that the packaging bag is compressed before cutting and to avoid stretching.
This effectively ensures that the packaging bag remains flat during cutting, avoids wrinkles, and improves cutting quality.
Smart Images
Figure CN224295944U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of packaging bag processing technology, specifically relating to a packaging bag cutting device. Background Technology
[0002] Packaging bags are bags used to package various products, making it convenient to transport and store goods during production and distribution. Packaging bags are usually made of plastic. During the processing, multiple packaging bags are usually connected together and need to be cut into separate pieces using a cutting device. Currently, most commonly used packaging bags are still made of plastic.
[0003] Currently, most existing packaging bag cutting devices have a function to flatten the packaging bag during use in order to avoid wrinkles during cutting. However, since the flattening structure on most cutting devices is on both sides of the cutter and flattens away from the cutter, it is difficult to achieve a better flattening effect when the packaging bag has horizontal wrinkles. Therefore, we propose a packaging bag cutting device. Utility Model Content
[0004] The purpose of this invention is to provide a packaging bag cutting device to solve the existing problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a packaging bag cutting device, including a cutting table, a pressure plate, and a rubber roller. A mounting frame is fixedly welded to the top of the cutting table. An electric push rod is mounted on the top of the mounting frame. The bottom of the electric push rod extends to the inner top of the mounting frame and is fixedly mounted with a lifting plate. A cutter is fixedly mounted at the bottom center of the lifting plate. Extension plates are fixedly mounted on both sides of the cutter. A movable rod is provided on the side of the extension plate away from the cutter. The top of the movable rod is movably mounted to both ends of the bottom of the lifting plate via a movable connecting seat. A rubber roller is movably mounted at the end of the movable rod via a rotating shaft. A return spring is provided in the middle of the movable rod of the rubber roller. The two ends of the return spring are fixedly connected to the lifting plate and the movable rod, respectively.
[0006] Preferably, a corrugated rubber sleeve is provided on the bottom outer periphery of the extension plate, a pressure plate is provided at the bottom of the corrugated rubber sleeve, the top and bottom of the corrugated rubber sleeve are fixedly connected to the extension plate and the pressure plate respectively by adhesive bonding, and a compression spring is provided inside the corrugated rubber sleeve, with both ends of the compression spring being fixedly connected to the extension plate and the pressure plate respectively.
[0007] Preferably, the lifting plate has limit blocks fixedly welded to both ends, and the inner wall surfaces on both sides of the mounting frame are provided with limit grooves. The limit blocks extend into the interior of the limit grooves and are slidably connected to their inner walls.
[0008] Preferably, guide sleeves are fixedly embedded on both sides of the top of the mounting frame, and guide rods are fixedly welded to the top of the lifting plate. The guide rods pass through the interior of the guide sleeves and are slidably connected to their inner walls.
[0009] Preferably, a cutting groove is provided at the top center of the cutting table, and the cutting groove is located directly below the cutting blade.
[0010] Preferably, the top surface of the cutting table is provided with a plurality of through holes, which are located on both sides of the blade groove.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. By setting movable rods on both sides of the lifting plate and using movable connecting seats to movably connect the top of the movable rods to the lifting plate, and then using rubber rollers, when the movable rods come into contact with the packaging bag, they are pressed and flipped, causing the rubber rollers to roll and move closer to the end of the lifting plate, thereby achieving the leveling of the packaging bag in the lateral direction and ensuring the flatness of the packaging bag during cutting. In addition, a return spring is used to realize its return function, so as to facilitate repeated cutting.
[0013] 2. By setting extension plates on both sides of the cutter and setting corrugated rubber sleeves, compression springs and pressure plates at the bottom, the cutter can press the two sides of the packaging bag to be cut by the compression springs and pressure plates before contacting the packaging bag, thereby ensuring the stability of the packaging bag when it is cut and avoiding stretching of the packaging bag, which would affect the quality of the packaged bag after cutting. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the bottom structure of the lifting plate of this utility model;
[0016] Figure 3 This is a schematic diagram of the internal structure of the corrugated rubber sleeve of this utility model.
[0017] In the diagram: 1. Cutting table; 2. Through hole; 3. Knife groove; 4. Mounting bracket; 5. Electric push rod; 6. Lifting plate; 7. Limiting block; 8. Limiting groove; 9. Guide sleeve; 10. Guide rod; 11. Cutting knife; 12. Extension plate; 13. Corrugated rubber sleeve; 14. Pressure plate; 15. Compression spring; 16. Movable rod; 17. Movable connecting seat; 18. Rubber roller; 19. Return spring. Detailed Implementation
[0018] 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.
[0019] Please see Figure 1-3 This utility model provides a technical solution for a packaging bag cutting device: it includes a cutting table 1, a pressure plate 14, and a rubber roller 18. A mounting frame 4 is fixedly welded to the top of the cutting table 1. An electric push rod 5 is mounted on the top of the mounting frame 4. The bottom of the electric push rod 5 extends to the inner top of the mounting frame 4 and a lifting plate 6 is fixedly installed thereon. A cutter 11 is fixedly installed at the bottom middle of the lifting plate 6. Extension plates 12 are fixedly installed on both sides of the cutter 11. A movable rod 16 is provided on the side of the extension plate 12 away from the cutter 11. The top of the movable rod 16 is movably installed on both sides of the bottom of the lifting plate 6 through a movable connecting seat 17. A rubber roller 18 is movably installed at the end of the movable rod 16 through a rotating shaft. A return spring 19 is provided in the middle of the movable rod 16 of the rubber roller 18. The two ends of the return spring 19 are fixedly connected to the lifting plate 6 and the movable rod 16, respectively.
[0020] Specifically, a corrugated rubber sleeve 13 is provided on the outer periphery of the bottom of the extension plate 12, and a pressure plate 14 is provided at the bottom of the corrugated rubber sleeve 13. The top and bottom of the corrugated rubber sleeve 13 are fixedly connected to the extension plate 12 and the pressure plate 14 respectively by adhesive bonding. A compression spring 15 is provided inside the corrugated rubber sleeve 13, and the two ends of the compression spring 15 are fixedly connected to the extension plate 12 and the pressure plate 14 respectively.
[0021] Specifically, limit blocks 7 are fixedly welded to both ends of the lifting plate 6, and limit grooves 8 are opened on both sides of the inner wall surface of the mounting frame 4. The limit blocks 7 extend into the interior of the limit grooves 8 and slide to connect with their inner walls.
[0022] Specifically, guide sleeves 9 are fixedly embedded on both sides of the top of the mounting frame 4, and guide rods 10 are fixedly welded to the top of the lifting plate 6. The guide rods 10 pass through the interior of the guide sleeves 9 and are slidably connected to their inner walls.
[0023] Specifically, a knife groove 3 is provided at the top center of the cutting table 1, and the knife groove 3 is located directly below the cutter 11.
[0024] Specifically, the top surface of the cutting table 1 is provided with several through holes 2, which are located on both sides of the blade groove 3.
[0025] In this embodiment, during use, the packaging bag to be cut is placed flat on the cutting table 1. Then, the lifting plate 6 is lowered by the electric push rod 5, so that the rubber roller 18 first contacts the packaging bag. As the lifting plate 6 continues to move downward, the movable rod 16 flips and moves closer to the end of the lifting plate 6. At the same time, the rubber roller 18 rolls after contacting the packaging bag, flattening the packaging bag in the lateral direction to ensure flatness. The pressure plate 14 gradually contacts the packaging bag. As the extension plate 12 continues to move downward with the lifting plate 6, the pressure plate 14 compresses the compression spring 15 and deforms. Using the return elasticity of the compression spring 15, the pressure plate 14 presses the two sides of the packaging bag to be cut. Finally, the cutting blade 11 cuts the packaging bag. This design effectively ensures the flatness of the packaging bag in the lateral direction during cutting and avoids wrinkles that may affect the cutting effect.
[0026] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A packaging bag cutting device, comprising a cutting table (1), a pressure plate (14), and a rubber roller (18), characterized in that: A mounting bracket (4) is fixedly welded to the top of the cutting table (1). An electric push rod (5) is mounted on the top of the mounting bracket (4). The bottom of the electric push rod (5) extends to the inner top of the mounting bracket (4) and a lifting plate (6) is fixedly installed thereon. A cutter (11) is fixedly installed at the bottom middle of the lifting plate (6). An extension plate (12) is fixedly installed on both sides of the cutter (11). A movable rod (16) is provided on the side of the extension plate (12) away from the cutter (11). The top of the movable rod (16) is movably installed on both sides of the bottom of the lifting plate (6) through a movable connecting seat (17). A rubber roller (18) is movably installed at the end of the movable rod (16) through a rotating shaft. A return spring (19) is provided in the middle of the movable rod (16) and the rubber roller (18). The two ends of the return spring (19) are fixedly connected to the lifting plate (6) and the movable rod (16) respectively.
2. The packaging bag cutting device according to claim 1, characterized in that: The bottom outer periphery of the extension plate (12) is provided with a corrugated rubber sleeve (13), and the bottom of the corrugated rubber sleeve (13) is provided with a pressure plate (14). The top and bottom of the corrugated rubber sleeve (13) are fixedly connected to the extension plate (12) and the pressure plate (14) respectively by gluing. The inside of the corrugated rubber sleeve (13) is provided with a compression spring (15), and the two ends of the compression spring (15) are fixedly connected to the extension plate (12) and the pressure plate (14) respectively.
3. The packaging bag cutting device according to claim 1, characterized in that: Limiting blocks (7) are fixedly welded to both ends of the lifting plate (6), and limiting grooves (8) are opened on both sides of the inner wall surface of the mounting bracket (4). The limiting blocks (7) extend into the interior of the limiting grooves (8) and slide to connect with their inner walls.
4. The packaging bag cutting device according to claim 1, characterized in that: The top two sides of the mounting bracket (4) are fixedly inlaid with guide sleeves (9), and the top of the lifting plate (6) is fixedly welded with a guide rod (10). The guide rod (10) passes through the inside of the guide sleeve (9) and is slidably connected to its inner wall.
5. The packaging bag cutting device according to claim 1, characterized in that: The cutting table (1) has a knife groove (3) at the top center, and the knife groove (3) is located directly below the cutter (11).
6. The packaging bag cutting device according to claim 1, characterized in that: The top surface of the cutting table (1) is provided with several through holes (2), which are located on both sides of the knife groove (3).