Cutting device capable of conveniently fixing plastic packaging bag

Abstract

The utility model relates to the technical field of plastic packaging bags, in particular to a cutting device capable of conveniently fixing plastic packaging bags, which comprises a workbench, a support frame is welded on the front side of the workbench, a hydraulic cylinder is mounted at the top of the support frame, and a fixing plate is mounted at the bottom of the hydraulic cylinder. Retainers are welded to the two sides of the top of the fixing plate correspondingly, springs are symmetrically installed at the bottoms of the two retainers correspondingly, fixing frames are installed at the bottoms of the two springs correspondingly, pressing rollers are movably installed on the inner sides of the two fixing frames correspondingly, an upper cutter is installed at the bottom of the fixing plate, and a lower cutter is installed at the position, below the upper cutter, of the top of the workbench. The plastic packaging bag cutting device has the advantages that when the upper cutter is driven to descend, the compression roller is driven to descend to compress and fix a plastic packaging bag, displacement of the plastic packaging bag in the cutting process is avoided, and the plastic packaging bag cutting device is simple in structure and low in use cost.

Description

Technical Field

[0001] This utility model relates to the field of plastic packaging bag technology, specifically a cutting device for conveniently fixing plastic packaging bags. Background Technology

[0002] Plastic packaging bags are a common type of bag used for packaging goods. They are mainly made of plastic film and are typically lightweight, flexible, waterproof, and transparent. They are widely used in food, daily necessities, and electronic products. Plastic packaging bags are made of films of polymer compounds such as polyethylene, polypropylene, and polyvinyl chloride, and are processed through processes such as blow molding and injection molding. They have functions such as protecting goods and facilitating carrying and transportation. A plastic packaging bag cutting device is a device used to cut plastic films or packaging bags.

[0003] When cutting plastic packaging bags, the cutting device needs to use a fixing structure to ensure that the plastic bags remain stable during the cutting process. Currently, the fixing structure of the cutting device is driven by several methods such as cylinders, hydraulic cylinders and motors. Not only is the cost high, but it also requires additional connection structures, which is not conducive to subsequent maintenance. Utility Model Content

[0004] The purpose of this utility model is to provide a cutting device that facilitates the fixing of plastic packaging bags. It has the advantages of driving the upper cutter to descend while driving the pressure roller to descend and press and fix the plastic packaging bag, thus preventing the plastic packaging bag from shifting during the cutting process. It has the advantages of simple structure and low cost of use, and solves the problem of complex structure and poor maintenance of cutting devices for fixing plastic packaging bags.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cutting device for conveniently fixing plastic packaging bags, comprising a workbench, a support frame welded to the front side of the workbench, a hydraulic cylinder mounted on the top of the support frame, a fixing plate mounted on the bottom of the hydraulic cylinder, retainers welded to both sides of the top of the fixing plate, springs symmetrically mounted on the bottom of the two retainers, fixing frames mounted on the bottom of the two sets of springs, pressure rollers movably mounted on the inner sides of the two fixing frames, an upper cutter mounted on the bottom of the fixing plate, and a lower cutter mounted on the top of the workbench below the upper cutter.

[0006] Preferably, a slider is installed on the front side of the fixed plate, the slider is located in the middle of the front side of the fixed plate, and a sliding groove is opened on the rear side of the support frame, the sliding groove is located in the middle of the rear side of the support frame, the slider and the sliding groove are aligned, and the slider and the sliding groove are slidably connected.

[0007] Preferably, each of the two fixed frames is equipped with a movable rod at its top, and each of the two retainers is provided with a movable hole. The two movable rods are located at the center of the two movable holes, and the tops of the two movable rods pass through the two movable holes.

[0008] Preferably, each of the two movable rods is equipped with a baffle at its top, the two baffles are parallel to the two retainers, and the outer diameter of the two baffles is larger than the inner diameter of the two movable holes.

[0009] Preferably, a bearing roller is installed on both sides of the top of the worktable below the two pressure rollers, and the two bearing rollers are located directly below the two pressure rollers.

[0010] Preferably, the upper cutting blade corresponds to the lower cutting blade, and the cutting edges of the upper cutting blade and the lower cutting blade are aligned.

[0011] Preferably, a fixed base is installed at each of the four corners of the bottom of the workbench, and the fixed base is perpendicular to the workbench.

[0012] Preferably, the two pressure rollers extend inside the two fixing frames, and the bottom height of the two pressure rollers is lower than the height of the upper cutting blade.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention utilizes springs and pressure rollers. When cutting is required, the plastic packaging bags on the two support rollers stop moving. A hydraulic cylinder drives the upper cutter downwards via a fixed plate. During the descent, the upper cutter drives two fixed frames downwards via two retainers. The pressure rollers inside the two fixed frames apply pressure to the plastic packaging bags on the two support rollers, pressing and fixing the plastic packaging bags. The springs at the top of the two fixed frames are compressed under pressure. The descent of the upper cutter, in conjunction with the lower cutter, cuts the plastic packaging bags. After cutting, the hydraulic cylinder drives the upper cutter and the two fixed frames upwards, causing the two pressure rollers to leave the plastic packaging bags. This achieves the effect of simultaneously driving the upper cutter downwards and the pressure rollers downwards to press and fix the plastic packaging bags, preventing displacement of the plastic packaging bags during the cutting process. The structure is simple and the operating cost is low. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention from a first angle;

[0016] Figure 2 This is a two-dimensional structural diagram of the present invention from a second angle;

[0017] Figure 3 This is a schematic diagram of the support frame and fixing plate structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the fixing frame and retainer structure of this utility model.

[0019] In the diagram: 1. Workbench; 2. Lower cutter; 3. Upper cutter; 4. Fixing frame; 5. Pressure roller; 6. Holder; 7. Baffle; 8. Hydraulic cylinder; 9. Support frame; 10. Bearing roller; 11. Fixing seat; 12. Fixing plate; 13. Slider; 14. Slide groove; 15. Spring; 16. Movable hole; 17. Movable rod. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-4This utility model provides a technical solution: a cutting device for conveniently fixing plastic packaging bags, including a workbench 1, a support frame 9 welded to the front side of the workbench 1, a hydraulic cylinder 8 installed on the top of the support frame 9, the hydraulic cylinder 8 connected to an external hydraulic mechanism, the hydraulic mechanism driving the hydraulic cylinder 8, a fixing plate 12 installed at the bottom of the hydraulic cylinder 8, a slider 13 installed on the front side of the fixing plate 12, the slider 13 being located in the middle of the front side of the fixing plate 12, a sliding groove 14 opened on the rear side of the support frame 9, the sliding groove 14 being located in the middle of the rear side of the support frame 9, the slider 13 and the sliding groove 14 aligned, the slider 13 and the sliding groove 14 slidably connected, the slider 13 limiting the fixing plate 12, the fixing plate During lifting and lowering, the slider 13 slides within the groove 14 to prevent the fixed plate 12 from shaking. Retainers 6 are welded to both sides of the top of the fixed plate 12. Springs 15 are symmetrically installed at the bottom of each retainer 6. Fixed frames 4 are installed at the bottom of each set of springs 15. Movable rods 17 are installed at the top of each fixed frame 4. Movable holes 16 are provided in both retainers 6. The two movable rods 17 are located at the center of the two movable holes 16, with their tops passing through the holes. When the two fixed frames 4 move up and down, the two movable rods 17 move within the holes 16, restricting the direction of movement of the two fixed frames 4 and maintaining their stability. For stability, baffles 7 are installed on the top of both movable rods 17. The two baffles 7 are parallel to the two retainers 6. The outer diameter of the two baffles 7 is larger than the inner diameter of the two movable holes 16. The two baffles 7 prevent the two movable rods 17 from slipping out of the two movable holes 16. Pressure rollers 5 are movably installed on the inner side of the two fixed frames 4. Carrying rollers 10 are installed on both sides of the top of the worktable 1 below the two pressure rollers 5. The two carrying rollers 10 are located directly below the two pressure rollers 5. The plastic packaging bag to be cut is placed on the two carrying rollers 10. The external drive mechanism drags the plastic packaging bag to move on the two carrying rollers 10. The two carrying rollers 10 move with the plastic packaging bag. The worktable rotates as it moves. An upper cutter 3 is installed at the bottom of the fixed plate 12. Two pressure rollers 5 extend from the inside of the two fixed frames 4. The bottom height of the two pressure rollers 5 is lower than the blade height of the upper cutter 3. The two pressure rollers 5 first contact the plastic packaging bag with the upper cutter 3. A lower cutter 2 is installed on the top of the worktable 1 below the upper cutter 3. The upper cutter 3 and the lower cutter 2 correspond to each other and their blades are aligned. The upper cutter 3 descends and cooperates with the lower cutter 2 to cut the plastic packaging bag. Fixed seats 11 are installed at the four corners of the bottom of the worktable 1. The fixed seats 11 are perpendicular to the worktable 1 and provide support for the worktable 1 to maintain its stability.

[0022] Working principle: The plastic packaging bag to be cut is placed on two carrier rollers 10. An external drive mechanism drags the plastic packaging bag to move on the two carrier rollers 10. The two carrier rollers 10 rotate as the plastic packaging bag moves. When cutting is required, the plastic packaging bag on the two carrier rollers 10 stops moving. The hydraulic cylinder 8 drives the upper cutter 3 to descend through the fixed plate 12. During the descent, the upper cutter 3 drives the two fixed frames 4 to descend through the two retainers 6. The pressure rollers 5 on the inner side of the two fixed frames 4 apply pressure to the plastic packaging bag on the two carrier rollers 10, pressing the plastic packaging bag tightly and fixing it. The springs 15 at the top of the two fixed frames 4 are compressed under the influence of pressure. The upper cutter 3 descends and cooperates with the lower cutter 2 to cut the plastic packaging bag. After cutting, the hydraulic cylinder 8 drives the upper cutter 3 and the two fixed frames 4 to rise, so that the two pressure rollers 5 leave the plastic packaging bag.

[0023] 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 cutting device for conveniently fixing plastic packaging bags, comprising a workbench (1), characterized in that: A support frame (9) is welded to the front side of the workbench (1). A hydraulic cylinder (8) is installed on the top of the support frame (9). A fixing plate (12) is installed at the bottom of the hydraulic cylinder (8). A retainer (6) is welded to both sides of the top of the fixing plate (12). Springs (15) are symmetrically installed at the bottom of the two retainers (6). Fixing frames (4) are installed at the bottom of the two sets of springs (15). Pressure rollers (5) are movably installed on the inner side of the two fixing frames (4). An upper cutter (3) is installed at the bottom of the fixing plate (12). A lower cutter (2) is installed on the top of the workbench (1) below the upper cutter (3).

2. The cutting device for conveniently fixing plastic packaging bags according to claim 1, characterized in that: A slider (13) is installed on the front side of the fixed plate (12). The slider (13) is located in the middle of the front side of the fixed plate (12). A sliding groove (14) is opened on the rear side of the support frame (9). The sliding groove (14) is located in the middle of the rear side of the support frame (9). The slider (13) and the sliding groove (14) are aligned and slidably connected.

3. The cutting device for conveniently fixing plastic packaging bags according to claim 1, characterized in that: Both of the fixed brackets (4) are equipped with movable rods (17) on their tops, and both retainers (6) are provided with movable holes (16). The two movable rods (17) are located at the center of the two movable holes (16), and the tops of the two movable rods (17) pass through the two movable holes (16).

4. The cutting device for conveniently fixing plastic packaging bags according to claim 3, characterized in that: Both of the movable rods (17) are equipped with baffles (7) at their tops. The two baffles (7) are parallel to the two retainers (6). The outer diameter of the two baffles (7) is larger than the inner diameter of the two movable holes (16).

5. The cutting device for conveniently fixing plastic packaging bags according to claim 1, characterized in that: Carrying rollers (10) are installed on both sides of the top of the worktable (1) below the two pressure rollers (5), and the two carrying rollers (10) are located directly below the two pressure rollers (5).

6. The cutting device for conveniently fixing plastic packaging bags according to claim 1, characterized in that: The upper cutter (3) corresponds to the lower cutter (2), and the blades of the upper cutter (3) and the lower cutter (2) are aligned.

7. The cutting device for conveniently fixing plastic packaging bags according to claim 1, characterized in that: The workbench (1) is equipped with a fixed seat (11) at each of the four corners of its bottom, and the fixed seat (11) is perpendicular to the workbench (1).

8. The cutting device for conveniently fixing plastic packaging bags according to claim 1, characterized in that: The two pressure rollers (5) extend inside the two fixed frames (4), and the bottom height of the two pressure rollers (5) is lower than the blade height of the upper cutter (3).

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