Cutting equipment for plastic bag production
By introducing an adjustable-spacing upper conveyor roller and gear transmission system, along with the coordination of tension rollers and cutting table, the problem of uneven plastic bag conveying in traditional equipment has been solved, achieving precise cutting and high-quality plastic bag production.
Patent Information
- Application Number
- CN202520357827.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-03-04
AI Technical Summary
Traditional plastic bag cutting equipment cannot flatten the plastic bags during transport, resulting in wrinkles or displacement.
A cutting device was designed, which ensures the adaptive conveying of plastic film by the belt through the adjustable spacing of the upper and lower conveyor rollers and the gear transmission system. During the conveying process, the film is kept flat by the cooperation of the tension roller and the cutting table. Combined with the precise control of the electric push rod and the cutting blade, the positioning and cutting of the plastic bag are realized.
This effectively prevents the plastic bags from slipping or deviating during the conveying process, ensuring the accuracy and quality of the cutting.
Smart Images
Figure CN223777257U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic bag production technology, specifically a cutting device for plastic bag production. Background Technology
[0002] Plastic bags, as a common packaging material, are widely used in daily life and industrial production. The plastic bag production process mainly includes the production, cutting, and shaping of plastic film, with the cutting process being the key step in achieving the shape and size of the plastic bag. Traditional plastic bag cutting equipment often directly conveys the plastic bags, failing to flatten them, resulting in wrinkles or displacement of the plastic bags during transport. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a cutting device for plastic bag production, which solves the problem that current plastic bag cutting devices often directly convey plastic bags without flattening them, resulting in wrinkles or displacement of the plastic bags during conveying.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a cutting device for plastic bag production, comprising a base, a support frame fixedly connected to the center of the upper surface of the base, a cutting assembly mounted on the support frame, fixed seats fixedly connected to both sides of the upper surface of the base, lower conveyor rollers rotatably connected to the lower sides of adjacent surfaces of the fixed seats, upper conveyor rollers mounted on the upper sides of adjacent surfaces of the fixed seats, belts mounted on the outer walls of both the lower and upper conveyor rollers, through grooves formed on the upper sides of the two fixed seats, sliders slidably connected to the inner walls of the through grooves, rotating rods fixedly connected to both ends of the lower conveyor rollers, and one end of each rotating rod rotatably connected to the fixed seat. The lower inner wall of the upper conveyor roller is fixedly connected to both ends of the upper conveyor roller. The outer wall of the connecting rod is rotatably connected to the middle of the slider. The outer wall of the rotating rod and the connecting rod are fixedly connected to the connecting gear. The upper and lower inner walls of the fixed seat are rotatably connected to the fixed rod. The outer wall of the fixed rod is fixedly connected to the driving gear. The two sets of driving gears are meshed. The two sets of connecting gears are meshed with the driving gears respectively. A motor is fixedly connected to one side of the interior of the fixed seat. The output end of the motor is fixedly connected to one end of one of the fixed rods. Electric push rods are fixedly connected to both sides of the upper surface of the fixed seat. The output end of the electric push rods is fixedly connected to the upper surface of the slider.
[0005] As a preferred embodiment of this utility model, the cutting assembly includes an electric push rod, one side of which is fixedly connected to the middle of the upper surface of the support frame. A pressure plate is fixedly connected to the output end of the electric push rod. A cutting blade is slidably connected to the middle of the lower surface of the pressure plate. An electric telescopic rod is fixedly connected to one side of the upper surface of the pressure plate. Slide grooves are provided on both sides of the pressure plate. T-shaped blocks are fixedly connected to both sides of the upper surface of the cutting blade. The outer wall of the T-shaped block is slidably connected to the outer wall of the slide groove. The output end of the electric telescopic rod is fixedly connected to the upper part of one side of one of the T-shaped blocks.
[0006] As a preferred embodiment of this utility model, a cutting table is fixedly connected to the middle of the upper surface of the base, and the cutting table is located below the support frame.
[0007] As a preferred embodiment of this utility model, a fixing frame is fixedly connected to the other side of the upper surface of the base, and an unwinding roller is rotatably connected to the upper part of the fixing frame.
[0008] As a preferred embodiment of this utility model, a connecting frame is fixedly connected to both sides of the middle part of the base, and a tension roller is rotatably connected to the upper part of the connecting frame.
[0009] In a preferred embodiment of this invention, the outer wall of the tension roller is flush with the upper surface of the cutting table.
[0010] Compared with the prior art, this utility model provides a cutting device for plastic bag production, which has the following advantages:
[0011] This cutting equipment for plastic bag production features an upper conveyor roller connected to a slider via a connecting rod. An electric push rod causes the slider to slide within a groove, allowing adjustment of the distance between the upper and lower conveyor rollers to accommodate plastic films of varying thicknesses. A motor drives a fixed rod to rotate, with a drive gear on the outer wall of the fixed rod meshing with a connecting gear, causing the upper and lower conveyor rollers to rotate. This, in turn, causes the belt to transport the plastic film, achieving adaptive conveying and positioning of plastic bags of different thicknesses. This reduces the risk of bag misalignment or displacement due to asynchrony during conveying, ensuring cutting accuracy and quality. Attached Figure Description
[0012] Figure 1 This is a perspective view of the present utility model;
[0013] Figure 2 This is a schematic diagram of the conveying structure of this utility model;
[0014] Figure 3 This is an exploded view of the structure of this utility model;
[0015] Figure 4 This is a schematic diagram of the cutting structure of this utility model.
[0016] In the diagram: 1. Base; 2. Fixing frame; 3. Unwinding roller; 4. Support frame; 5. Cutting assembly; 501. Electric push rod one; 502. Pressure plate; 503. Cutting blade; 504. Slide groove; 505. T-block; 506. Electric telescopic rod; 6. Cutting table; 7. Fixing seat; 8. Lower conveyor roller; 9. Upper conveyor roller; 10. Through groove; 11. Belt; 12. Rotating rod; 13. Connecting gear; 14. Fixing rod; 15. Drive gear; 16. Motor; 17. Connecting rod; 18. Slider; 19. Electric push rod two; 20. Connecting frame; 21. Tensioning roller. Detailed Implementation
[0017] 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. Example 1
[0018] Please see Figure 1-4 In this embodiment: a cutting device for plastic bag production includes a base 1, a support frame 4 fixedly connected to the middle of the upper surface of the base 1, a cutting assembly 5 mounted on the support frame 4, fixed seats 7 fixedly connected to both sides of the upper surface of the base 1, lower conveyor rollers 8 rotatably connected to the lower sides of the adjacent surfaces of the fixed seats 7, upper conveyor rollers 9 mounted on the upper sides of the adjacent surfaces of the fixed seats 7, belts 11 mounted on the outer walls of both the lower and upper conveyor rollers 8, through grooves 10 opened on the upper sides of both fixed seats 7, sliders 18 slidably connected to the inner walls of the through grooves 10, rotating rods 12 fixedly connected to both ends of the lower conveyor rollers 8, one end of each rotating rod 12 rotatably connected to the lower inner wall of the fixed seat 7, and the upper conveyor rollers 9... Both ends are fixedly connected to connecting rods 17. The outer wall of connecting rod 17 is rotatably connected to the middle of slider 18. Connecting gears 13 are fixedly connected to the outer wall of rotating rod 12 and connecting rod 17. Fixed rods 14 are rotatably connected to the upper and lower parts of the inner wall of fixed seat 7. Driving gears 15 are fixedly connected to the outer wall of fixed rod 14. The two sets of driving gears 15 are meshed. The two sets of connecting gears 13 are meshed with driving gears 15 respectively. A motor 16 is fixedly connected to one side of the interior of fixed seat 7. The output end of motor 16 is fixedly connected to one end of one of the fixed rods 14. Electric push rods 19 are fixedly connected to both sides of the upper surface of fixed seat 7. The output end of electric push rod 19 is fixedly connected to the upper surface of slider 18.
[0019] In this embodiment, since the upper conveyor roller 9 is connected to connecting rods 17 at both ends, the slider 18 is driven to slide in the through groove 10 by starting the electric push rod 19, thereby causing the slider 18 to drive the connecting rods 17 to move. This allows the distance between the upper conveyor roller 9 and the lower conveyor roller to be adjusted. Since the lower conveyor roller 8 is connected to rotating rods 12 at both ends, and both the connecting rods 17 and the rotating rods 12 are provided with connecting gears 13 on their outer walls, the motor 16 drives one of the fixed rods 14 to rotate. The fixed rod 14 drives the drive gear 15 to rotate, and the connecting gear 13 meshes with the drive gear 15. This ensures that the upper conveyor roller 9 and the lower conveyor roller 8 rotate, allowing the belt 11 to convey the plastic bag, thereby preventing the film from slipping or deviating during conveying.
[0020] Furthermore, the cutting assembly 5 includes an electric push rod 501, one side of which is fixedly connected to the middle of the upper surface of the support frame 4. The output end of the electric push rod 501 is fixedly connected to a pressure plate 502. A cutting blade 503 is slidably connected to the middle of the lower surface of the pressure plate 502. An electric telescopic rod 506 is fixedly connected to one side of the upper surface of the pressure plate 502. Slide grooves 504 are provided on both sides of the pressure plate 502. T-blocks 505 are fixedly connected to both sides of the upper surface of the cutting blade 503. The outer wall of the T-block 505 is slidably connected to the outer wall of the slide groove 504. The output end of the electric telescopic rod 506 is fixedly connected to the upper part of one side of one of the T-blocks 505. A cutting table 6 is fixedly connected to the middle of the upper surface of the base 1. The cutting table 6 is located below the support frame 4.
[0021] When the belt 11 conveys the plastic bag to the position where it needs to be cut, it stops conveying and then the electric push rod 501 is activated to drive the pressure plate 502 to move downward, so that the two sides of the pressure plate 502 press the two sides of the plastic bag that need to be cut onto the upper surface of the cutting table 6. At the same time, the cutting blade 503 will also press against the plastic bag. Then the electric telescopic rod 506 is activated to control the movement of the T-block 505, so that the cutting blade 503 can move. Through the sliding connection between the T-block 505 and the slide groove 504, the movement of the cutting blade 503 is ensured to be smooth and precise, so that the plastic bag can be cut quickly.
[0022] Furthermore, a fixing frame 2 is fixedly connected to the other side of the upper surface of the base 1, and an unwinding roller 3 is rotatably connected to the upper part of the fixing frame 2; a connecting frame 20 is fixedly connected to both sides of the middle part of the base 1, and a tensioning roller 21 is rotatably connected to the upper part of the connecting frame 20; the outer wall of the tensioning roller 21 is flush with the upper surface of the cutting table 6.
[0023] The plastic bag is unwound by the unwinding roller 3 and then passes through the tensioning rollers 21 on both sides of the base 1. The tensioning rollers 21 are designed to be flush with the cutting table 6, so that the film is subjected to uniform tension during film conveying, ensuring that the film always remains flat and effectively avoiding wrinkles.
[0024] The working principle and usage process of this utility model are as follows: The plastic bag is unwound by the unwinding roller 3, and then passes sequentially through the tensioning rollers 21 on both sides of the base 1. The tensioning rollers 21, designed to be flush with the cutting table 6, apply uniform tension to the surface of the film during transport, ensuring the film remains flat and effectively preventing wrinkles. The film is then delivered to the belt 11. Since the upper conveyor roller 9 has connecting rods 17 at both ends, the electric push rod 19 drives the slider 18 to slide within the through groove 10, thereby causing the slider 18 to move the connecting rods 17. This allows adjustment of the distance between the upper conveyor roller 9 and the lower conveyor roller. Since the lower conveyor roller 8 has rotating rods 12 at both ends, and both the connecting rods 17 and the rotating rods 12 have connecting gears 13 on their outer walls, the motor 16 drives one of the fixed rods 14 to rotate. The fixed rod 14 drives the drive gear 15 to rotate, and the connecting gear 13 meshes with the drive gear 15, thereby ensuring that the upper conveyor roller 9 and the lower conveyor roller 8 rotate, so that the belt 11 conveys the plastic bag, thus avoiding the film from slipping or deviating in position during conveying. When the belt 11 conveys the plastic bag to the position that needs to be cut, the conveying stops, and then the electric push rod 501 is activated to drive the pressure plate 502 to move downward, so that the two sides of the pressure plate 502 press against the two sides of the plastic bag that need to be cut. At the same time, the cutting blade 503 will also press against the plastic bag. Then the electric telescopic rod 506 is activated to control the movement of the T-block 505, so that the cutting blade 503 can move. Through the sliding connection between the T-block 505 and the slide groove 504, the movement of the cutting blade 503 is ensured to be smooth and precise, so that the plastic bag can be cut quickly.
[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.
Claims
1. A cutting device for plastic bag production, comprising a base (1), characterized in that: A support frame (4) is fixedly connected to the middle of the upper surface of the base (1). A cutting component (5) is installed on the support frame (4). Fixed seats (7) are fixedly connected to both sides of the upper surface of the base (1). Lower conveyor rollers (8) are rotatably connected to the lower sides of the adjacent surfaces of the fixed seats (7). Upper conveyor rollers (9) are installed on the upper sides of the adjacent surfaces of the fixed seats (7). Belts (11) are installed on the outer walls of both the lower conveyor rollers (8) and the upper conveyor rollers (9). Through grooves (10) are opened on the upper sides of both fixed seats (7). Slider (18) is slidably connected to the inner walls of the through grooves (10). Rotating rods (12) are fixedly connected to both ends of the lower conveyor rollers (8). One end of the rotating rods (12) is rotatably connected to the lower part of the inner wall of the fixed seat (7). Connecting rods are fixedly connected to both ends of the upper conveyor rollers (9). 17), the outer wall of the connecting rod (17) is rotatably connected to the middle of the slider (18), the outer wall of the rotating rod (12) and the connecting rod (17) are both fixedly connected to the connecting gear (13), the upper and lower parts of the inner wall of the fixed seat (7) are rotatably connected to the fixed rod (14), the outer wall of the fixed rod (14) is fixedly connected to the driving gear (15), the two sets of driving gears (15) are meshed, the two sets of connecting gears (13) are meshed with the driving gear (15) respectively, the inner side of the fixed seat (7) is fixedly connected to the motor (16), the output end of the motor (16) is fixedly connected to one end of one of the fixed rods (14), the upper surface of the fixed seat (7) is fixedly connected to both sides of the electric push rod (19), the output end of the electric push rod (19) is fixedly connected to the upper surface of the slider (18).
2. The cutting equipment for plastic bag production according to claim 1, characterized in that: The cutting assembly (5) includes an electric push rod (501), one side of the outer wall of the electric push rod (501) is fixedly connected to the middle of the upper surface of the support frame (4), the output end of the electric push rod (501) is fixedly connected to a pressure plate (502), the middle of the lower surface of the pressure plate (502) is slidably connected to a cutting blade (503), one side of the upper surface of the pressure plate (502) is fixedly connected to an electric telescopic rod (506), both sides of the pressure plate (502) are provided with sliding grooves (504), both sides of the upper surface of the cutting blade (503) are fixedly connected to T-shaped blocks (505), the outer wall of the T-shaped block (505) is slidably connected to the outer wall of the sliding groove (504), and the output end of the electric telescopic rod (506) is fixedly connected to the upper part of one side of one of the T-shaped blocks (505).
3. The cutting equipment for plastic bag production according to claim 1, characterized in that: A cutting table (6) is fixedly connected to the middle of the upper surface of the base (1), and the cutting table (6) is located below the support frame (4).
4. A cutting device for plastic bag production according to claim 1, characterized in that: A fixing frame (2) is fixedly connected to the other side of the upper surface of the base (1), and an unwinding roller (3) is rotatably connected to the upper part of the fixing frame (2).
5. A cutting device for plastic bag production according to claim 1, characterized in that: The base (1) has a connecting frame (20) fixedly connected to both sides of the middle part, and a tension roller (21) is rotatably connected to the upper part of the connecting frame (20).
6. A cutting device for plastic bag production according to claim 5, characterized in that: The outer wall of the tension roller (21) is flush with the upper surface of the cutting table (6).