Plastic bag production raw material cutting device

Abstract

According to the technical scheme, the plastic bag production raw material cutting device is characterized by comprising a machining table, a belt conveyor is arranged in the machining table, an installation frame is fixedly installed on the top face of the machining table, an air cylinder is fixedly installed on the top face of the installation frame, a connecting hole is formed in the top face of the installation frame, and the air cylinder is fixedly installed in the connecting hole. A mounting plate is arranged on the inner bottom surface of the mounting frame, and a shaft of the air cylinder penetrates through the connecting hole and is fixedly connected with the mounting plate; the fixing assembly is arranged on the bottom face of the mounting plate and used for fixing when the plastic bag is cut, by arranging a spring, when the shaft of the air cylinder pushes the mounting plate downwards, a fixing block below the mounting plate can make contact with the plastic bag to be cut firstly, and along with continuous descending of the mounting plate, the fixing block bears the counter-acting force of the plastic bag, and the plastic bag is cut. And when the fixing force is applied suddenly, the connecting rod moves upwards in the movable hole and the through hole of the limiting frame, so that the plastic bag has an adaptive process, and the damage caused by suddenly applying large fixing force is reduced.

Description

Technical Field

[0001] This utility model relates to the field of plastic bag production technology, specifically to a plastic bag production raw material cutting device. Background Technology

[0002] Plastic bags are bags made primarily of plastics (common plastics include polypropylene, polyester, nylon, etc.). Plastic bags and plastic bags play a very important role in daily life, and they have multiple functions. The raw materials for plastic bags are mainly plastic granules such as polyethylene (PE) and polypropylene (PP), as well as some additives. In the plastic bag processing process, the raw plastic bags need to be cut after production, which requires a cutting device for rapid cutting.

[0003] For example, Chinese Patent Publication No. CN212827133U discloses a cutting device for raw materials used in plastic bag production, relating to the field of plastic bag manufacturing, aimed at solving the problem of not being able to fix plastic bags during the cutting process in existing technologies. The device's housing contains an electric slide rail, which is fixedly connected to the housing. Two magnetic plates are provided on one side of the electric slide rail, both fixedly connected to the slide rail. Three sliding blocks are provided at the lower end of each magnetic plate, with a magnetic block at the upper end of each block, electromagnetically connected to the magnetic plates. The sliding blocks are fixedly connected to the magnetic blocks. A first cylinder is provided at the lower end of each sliding block, fixedly connected to the block. A first pressing block is provided at the lower end of the first cylinder. A third cylinder is provided on one side of the first pressing block, and a second pressing block is provided at the lower end of the third cylinder.

[0004] Currently, there are still some shortcomings in the raw material cutting device for plastic bag production. For example, when the pressure block is driven by the first and third air pipes to fix the plastic bag on the conveyor belt, improper control of the downward pressure or inaccurate positioning can easily cause a large impact force on the plastic bag, resulting in damage to the plastic bag. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a cutting device for raw materials used in plastic bag production, which solves the problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A cutting device for plastic bag production raw materials includes: a processing table, a belt conveyor installed inside the processing table, a mounting frame fixedly installed on the top surface of the processing table, a cylinder fixedly installed on the top surface of the mounting frame, a connecting hole opened on the top surface of the mounting frame, a mounting plate provided on the inner bottom surface of the mounting frame, the shaft of the cylinder passing through the connecting hole and fixedly connected to the mounting plate, and a cutting blade fixedly installed on the bottom surface of the mounting plate; and a fixing assembly, which is disposed on the bottom surface of the mounting plate and used for fixing the plastic bag during cutting.

[0008] Preferably, the fixing assembly includes: two fixing blocks, both of which are disposed on the bottom surface of the mounting plate; two movable holes are opened on the top surface of the mounting plate; a connecting rod is movably fitted inside the movable holes; two limiting frames are fixedly installed on the top surface of the mounting plate; a through hole is opened on the top surface of the limiting frame; the connecting rod passes through the through hole; a limiting ring is fixedly fitted on the outside of the connecting rod; a spring is provided on the top surface of the limiting ring; and the connecting rod is fixedly connected to the fixing blocks.

[0009] Preferably, a rubber pad is fixedly adhered to the bottom surface of the fixing block.

[0010] Preferably, the top surface of the mounting bracket has two guide holes, the connecting rod passes through the guide holes and extends to the outside, and a limit block is fixedly installed on the top surface of the connecting rod.

[0011] Preferably, the top surface of the processing table has two cutting grooves, and the height of the cutting grooves is higher than the height of the belt of the belt conveyor.

[0012] Preferably, a fixing frame is fixedly installed on the top surface of the processing table, and a smoothing roller is rotatably installed on one side of the inner side of the fixing frame.

[0013] In summary, the present invention has the following main advantages:

[0014] By incorporating a spring, when the cylinder pushes the mounting plate downwards axially, the connecting rod can move linearly in the vertical direction under the constraint of the guide hole, effectively preventing the connecting rod from shifting or wobbling during movement. The fixing block below the mounting plate will first contact the plastic bag to be cut. As the mounting plate continues to descend, the fixing block is subjected to the reaction force of the plastic bag, causing the connecting rod to move upwards within the through holes of the movable hole and the limit bracket. At this time, the limit ring on the connecting rod will compress the spring. The compressed spring generates elastic force, which is transmitted to the fixing block through the connecting rod, causing the fixing block to press tightly against the plastic bag, thereby fixing the plastic bag. The fixing force increases gradually, allowing the plastic bag to adapt and reducing damage caused by suddenly applying a large fixing force. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the mounting bracket structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the mounting plate structure of this utility model;

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

[0019] Reference numerals: 1. Processing table; 2. Belt conveyor; 3. Mounting bracket; 4. Cylinder; 5. Connecting hole; 6. Mounting plate; 7. Cutting blade; 8. Fixing block; 9. Connecting rod; 10. Movable hole; 11. Limiting bracket; 12. Limiting ring; 13. Spring; 14. Through hole; 15. Rubber pad; 16. Guide hole; 17. Limiting block; 18. Cutting groove; 19. Fixing bracket; 20. Smoothing roller. 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] refer to Figures 1-4 A cutting device for plastic bag production raw materials includes: a processing table 1, a belt conveyor 2 inside the processing table 1, a mounting frame 3 fixedly mounted on the top surface of the processing table 1, a cylinder 4 fixedly mounted on the top surface of the mounting frame 3, a connecting hole 5 on the top surface of the mounting frame 3, a mounting plate 6 on the bottom surface inside the mounting frame 3, the shaft of the cylinder 4 passing through the connecting hole 5 and fixedly connected to the mounting plate 6, and a cutting blade 7 fixedly mounted on the bottom surface of the mounting plate 6; and a fixing component, which is disposed on the bottom surface of the mounting plate 6 and used for fixing when cutting plastic bags.

[0022] By setting a fixing component, when the plastic bag tube conveyor belt 2 delivers the plastic bag to the bottom of the mounting frame 3, the cylinder 4 is activated. The cylinder 4 drives the mounting plate 6 to press down, and the cutting blade 7 on the mounting plate 6 cuts and separates the plastic bag. During the cutting process, the fixing component fixes the plastic bag to prevent it from shifting or shaking. This ensures the precision and accuracy of the cutting and improves the quality of the product.

[0023] As a further embodiment of this utility model, the fixing component includes: two fixing blocks 8, both fixing blocks 8 are disposed on the bottom surface of the mounting plate 6, the top surface of the mounting plate 6 has two movable holes 10, the inside of the movable holes 10 is fitted with a connecting rod 9, the top surface of the mounting plate 6 is fixedly mounted with two limiting frames 11, the top surface of the limiting frames 11 has a through hole 14, the connecting rod 9 passes through the through hole 14, the outside of the connecting rod 9 is fixedly fitted with a limiting ring 12, the top surface of the limiting ring 12 is provided with a spring 13, and the connecting rod 9 is fixedly connected to the fixing blocks 8;

[0024] By setting spring 13, when the cylinder 4 pushes the mounting plate 6 axially downward, the fixing block 8 below the mounting plate 6 will first contact the plastic bag to be cut. As the mounting plate 6 continues to descend, the fixing block 8 is subjected to the reaction force of the plastic bag, which causes the connecting rod 9 to move upward within the through hole 14 of the movable hole 10 and the limiting bracket 11. At this time, the limiting ring 12 on the connecting rod 9 will compress the spring 13. The spring 13 generates elastic force after being compressed. This elastic force will be transmitted to the fixing block 8 through the connecting rod 9, so that the fixing block 8 is pressed tightly on the plastic bag, thereby fixing the plastic bag. The fixing force is gradually increased, which allows the plastic bag to have an adaptation process and reduces the damage caused by suddenly applying a large fixing force.

[0025] As a further embodiment of this utility model, a rubber pad 15 is fixedly adhered to the bottom surface of the fixing block 8;

[0026] By setting the rubber pad 15, when the fixing block 8 is pressed down, the rubber pad 15 can disperse the pressure, avoid the pressure being concentrated on a certain point of the plastic bag, and at the same time, avoid the appearance of indentations on the surface when in contact with the plastic bag.

[0027] As a further embodiment of this utility model, the top surface of the mounting bracket 3 has two guide holes 16, the connecting rod 9 passes through the guide holes 16 and extends to the outside, and the top surface of the connecting rod 9 is fixedly installed with a limiting block 17.

[0028] By setting the guide hole 16, when the cylinder 4 drives the mounting plate 6 to descend, the connecting rod 9 can move linearly in the vertical direction under the restriction of the guide hole 16, which effectively avoids the connecting rod 9 from shifting or shaking during the movement. This makes the fixing block 8 more accurately positioned when fixing the plastic bag, which helps to improve the cutting quality.

[0029] As a further embodiment of this utility model, two cutting grooves 18 are provided on the top surface of the processing table 1, and the height of the cutting grooves 18 is higher than the height of the belt of the belt conveyor 2.

[0030] By setting the cutter groove 18, which is higher than the belt of the belt conveyor 2, the cutter will not directly contact the belt when it descends to cut. This can effectively prevent the cutter from accidentally damaging the belt during the cutting process, extend the service life of the belt conveyor 2, and reduce the cost and downtime caused by frequent belt replacement due to belt damage.

[0031] As a further embodiment of this utility model, a fixing frame 19 is fixedly installed on the top surface of the processing table 1, and a smoothing roller 20 is rotatably installed on one side of the inside of the fixing frame 19.

[0032] By setting up the smoothing roller 20, when the plastic bag is conveyed by the belt conveyor 2 on the processing table 1, it passes through the fixed frame 19 and the smoothing roller 20 on the fixed frame 19. During the rotation of the smoothing roller 20, it can apply a certain pressure to the plastic bag passing below it, gradually smoothing out the wrinkles on the surface, which is beneficial for subsequent cutting and improves the processing quality.

[0033] 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 raw materials in plastic bag production, characterized in that, include: A processing table (1) is provided with a belt conveyor (2) inside the processing table (1). A mounting frame (3) is fixedly installed on the top surface of the processing table (1). A cylinder (4) is fixedly installed on the top surface of the mounting frame (3). A connecting hole (5) is opened on the top surface of the mounting frame (3). A mounting plate (6) is provided on the bottom surface of the mounting frame (3). The shaft of the cylinder (4) passes through the connecting hole (5) and is fixedly connected to the mounting plate (6). A cutting blade (7) is fixedly installed on the bottom surface of the mounting plate (6). A fixing component is provided on the bottom surface of the mounting plate (6) for fixing the plastic bag when cutting.

2. The plastic bag production raw material cutting device according to claim 1, characterized in that, The fixing component includes: Two fixing blocks (8) are set on the bottom surface of the mounting plate (6). The top surface of the mounting plate (6) has two movable holes (10). A connecting rod (9) is movably fitted inside the movable holes (10). Two limiting frames (11) are fixedly installed on the top surface of the mounting plate (6). A through hole (14) is opened on the top surface of the limiting frame (11). The connecting rod (9) passes through the through hole (14). A limiting ring (12) is fixedly fitted on the outside of the connecting rod (9). A spring (13) is provided on the top surface of the limiting ring (12). The connecting rod (9) is fixedly connected to the fixing blocks (8).

3. The plastic bag production raw material cutting device according to claim 2, characterized in that, A rubber pad (15) is fixedly adhered to the bottom surface of the fixing block (8).

4. The plastic bag production raw material cutting device according to claim 2, characterized in that, The mounting bracket (3) has two guide holes (16) on its top surface. The connecting rod (9) passes through the guide holes (16) and extends to the outside. A limit block (17) is fixedly installed on the top surface of the connecting rod (9).

5. The plastic bag production raw material cutting device according to claim 1, characterized in that, The top surface of the processing table (1) has two cutting grooves (18), and the height of the cutting grooves (18) is higher than the height of the belt of the belt conveyor (2).

6. The plastic bag production raw material cutting device according to claim 1, characterized in that, A fixing frame (19) is fixedly installed on the top surface of the processing table (1), and a smoothing roller (20) is rotatably installed on one side of the inside of the fixing frame (19).

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