Composite plastic film cutting device

Abstract

The invention discloses a composite plastic film cutting device, and relates to the technical field of cutting equipment. The cutting device comprises a machine body, a first cutting assembly, a second cutting assembly and a driving assembly, the first cutting assembly comprises a first cutter mechanism and a pair of conveying rollers, the second cutting assembly comprises a cutting platform, a second cutter mechanism, a first sliding mechanism and a second sliding mechanism, and the driving assembly comprises a driving motor. The driving motor is matched with the synchronous belt through the synchronous belt wheel to drive the first cutter mechanism, the conveying roller and the cutting platform to move synchronously. The driving assembly drives the first cutter mechanism, the conveying roller and the cutting platform to move synchronously, and the cutting platform can cut materials through the second cutter mechanism in the moving process, so that the non-production time can be shortened by realizing continuous cutting; and the problems of non-uniform tension, reduction of cutting precision and the like possibly caused by frequent start and stop can be avoided.

Description

Technical Field

[0001] This invention relates to the field of cutting equipment technology, and in particular to a composite plastic film cutting device. Background Technology

[0002] In the field of composite plastic film processing, it is necessary to cut continuously produced composite plastic films into segments of specific lengths and widths to meet the requirements of subsequent packaging, finishing, or further processing. However, the core contradiction in cutting equipment used for composite plastic film cutting lies in the conflict between the intermittent cutting operation of traditional processes and the demands of continuous production. Existing technologies generally adopt a stop-and-go cutting mode, where the composite plastic film is conveyed to a designated position, its movement is paused, and the cutting mechanism completes the cutting before resuming conveying. While this mechanical pause ensures the cutting accuracy of the composite plastic film, it significantly shortens the effective operating time of the cutting equipment, reducing the production efficiency of composite plastic film. More seriously, the frequent start-and-stop of the conveyor system exacerbates mechanical wear and reduces the service life of the cutting equipment. Summary of the Invention

[0003] To address the issues of low production efficiency and reduced lifespan due to repeated start-stop operations in current cutting equipment, this invention provides a composite plastic film cutting device.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A composite plastic film cutting device includes a body, a first cutting assembly, a second cutting assembly, and a drive assembly. The first cutting assembly is located on one side of the body, and the second cutting assembly is located on the other side of the body. The first cutting assembly includes a first cutting mechanism and a pair of conveying rollers. The second cutting assembly includes a cutting platform, a second cutting mechanism, a first sliding mechanism, and a second sliding mechanism. The cutting platform moves relative to the body via the first sliding mechanism, and the second cutting mechanism moves relative to the cutting platform via the second sliding mechanism. The drive assembly includes a drive motor, which drives the first cutting mechanism, the conveying rollers, and the cutting platform to move synchronously via a synchronous pulley and a synchronous belt. The cutting platform is equipped with several thin-belt guide rod cylinders. When the thin-belt guide rod cylinders are in an extended state, they clamp the synchronous belt, thereby achieving synchronous movement. A moving cylinder is located at the bottom of the body. The moving cylinder is connected to the cutting platform and drives the cutting platform to reset when the thin-belt guide rod cylinders are in a retracted state.

[0005] Furthermore, the first cutting mechanism includes an upper rotating shaft and a lower rotating shaft, which are arranged in the vertical direction and are driven by gear meshing. Both the upper rotating shaft and the lower rotating shaft are provided with a plurality of cutting blades.

[0006] Furthermore, an upper horizontal shaft is provided above the upper rotating shaft, and a plurality of Y-shaped upper support arms are provided on the upper horizontal shaft. Both ends of each upper support arm are rotatably connected to upper support wheels. The upper rotating shaft is located between two of the upper support wheels and is in contact with them. A lower horizontal shaft is provided below the lower rotating shaft, and a plurality of Y-shaped lower support arms are provided on the lower horizontal shaft. Both ends of each lower support arm are rotatably connected to lower support wheels. The lower rotating shaft is located between two of the lower support wheels and is in contact with them.

[0007] Furthermore, it also includes a waste collection assembly, which includes an upper crossbeam, an upper fixed seat, a suction pipe, and a waste bin. The upper crossbeam is located above the machine body, and the two upper fixed seats are disposed on the upper crossbeam. The suction pipe is connected to the upper fixed seat, and the end of the suction pipe is located between the conveying roller and the first cutting mechanism, and faces the first cutting mechanism. The waste bin is connected to the suction pipe, and the waste bin has negative pressure.

[0008] Furthermore, the waste collection assembly includes a lower crossbeam and a lower fixed base. The top of the machine body has a movable opening, the lower crossbeam is located below the movable opening, the bottom of the lower fixed base is connected to the lower crossbeam, and the top of the fixed base is disposed in the movable opening. The end of the suction pipe is connected to the lower fixed base.

[0009] Furthermore, both the first sliding mechanism and the second sliding mechanism include a guide rail and a slider. The cutting platform includes an upper platform and a lower platform. The second cutting blade structure is disposed on the upper platform. The lower platform is connected to the machine body through the first sliding mechanism. The second cutting blade mechanism is connected to the upper platform through the second sliding mechanism. A rodless cylinder is provided on the upper platform.

[0010] Furthermore, the second cutting mechanism includes a moving frame, a cutting motor, and a blade. The cutting motor is mounted on the moving frame, the moving platform is connected to the slide connecting seat on the rodless cylinder, and the blade is drivenly connected to the cutting motor.

[0011] Furthermore, a cutting opening is provided on the lower platform, and the lower part of the blade is adapted to extend into the cutting opening.

[0012] Furthermore, the upper platform is provided with several buffers, each buffer including a cylinder, a telescopic rod, and a buffer head. The cylinder is fixed to the upper platform by a buffer seat, the telescopic rod is disposed in the cylinder, the buffer head is fixed to the end of the telescopic rod, and a spring is sleeved on the telescopic rod.

[0013] Furthermore, the cutting platform also includes a clamping mechanism, which comprises a support beam, a pressure rod, two first rocker arms, two second rocker arms, and a clamping cylinder. The support beam is located on the upper platform. The two first rocker arms are located on the left and right sides of the front end face of the support beam, respectively, and the two second rocker arms are located on the left and right sides of the rear end face of the support beam, respectively. A rotating shaft connects the first rocker arms and the second rocker arms. A connecting rod is provided between the two first rocker arms. The cylinder of the clamping cylinder is rotatably connected to the support beam, and the telescopic rod is rotatably connected to the first rocker arms. The ends of the two second rocker arms are rotatably connected to the pressure rod.

[0014] The beneficial effects of this invention are as follows: This invention drives the first cutting mechanism, the conveying roller, and the cutting platform to move synchronously through the driving component. During the movement of the cutting platform, the material can be cut simultaneously by the second cutting mechanism without stopping the machine. This not only reduces non-production time by achieving continuous cutting and avoids production capacity loss caused by downtime, effectively improving production efficiency, but also avoids problems such as uneven tension, decreased cutting accuracy, and reduced equipment lifespan caused by frequent start-stop. This maintains cutting stability and reduces the defect rate. Attached Figure Description

[0015] Figure 1 The diagram shown is a schematic representation of the structural principle of one embodiment of the present invention.

[0016] Figure 2 As shown Figure 1 The left view.

[0017] Figure 3 As shown Figure 1 Rear view.

[0018] Figure 4 As shown Figure 1 The partial structural diagram shows the structure of the cutting platform.

[0019] Figure 5 As shown Figure 4 A side view.

[0020] Figure 6 As shown Figure 4 The partial structural diagram shows the structure of the clamping mechanism.

[0021] Figure 7 As shown Figure 6 The front view.

[0022] Explanation of reference numerals in the attached drawings: 1. Upper rotating shaft; 2. Lower rotating shaft; 3. Cutter; 4. Upper horizontal shaft; 5. Upper support arm; 6. Lower horizontal shaft; 7. Suction pipe; 8. Upper fixed seat; 9. Lower fixed seat; 10. Upper crossbeam; 11. Upper conveyor roller; 12. Screw elevator; 13. Lower platform; 14. Upper platform; 15. Rodless cylinder; 16. Moving frame; 17. Cutting motor; 18. Buffer; 19. Lower support arm; 20. Drive motor; 21. New thin-type cylinder with guide rod; 22. Moving cylinder; 23. Slide table connecting seat; 24. Support beam; 25. Clamping cylinder; 26. First rocker arm; 27. Second rocker arm; 28. Connecting rod; 29. ​​Pressure rod. Detailed Implementation

[0023] This invention discloses a composite plastic film cutting device. The following describes one embodiment of the invention in detail with reference to the accompanying drawings.

[0024] Combination Figure 1 and Figure 2 As shown, a composite plastic film cutting device includes a machine body, a first cutting assembly, a second cutting assembly, a waste collection assembly, and a drive assembly. The first cutting assembly is located at the front of the machine body. The first cutting assembly includes a first cutting mechanism and a pair of conveying rollers. The first cutting mechanism includes an upper rotating shaft 1 and a lower rotating shaft 2, which are arranged vertically, with the upper rotating shaft 1 located above the lower rotating shaft 2. Gears are provided on one side of both the upper rotating shaft 1 and the lower rotating shaft 2. The gear on the upper rotating shaft 1 meshes with the gear on the lower rotating shaft 2, and a synchronous pulley is provided on the right side of the lower rotating shaft 2. Several annular cutters 3 are fixed on both the upper rotating shaft 1 and the lower rotating shaft 2, and the cutters 3 on the upper rotating shaft 1 and the cutters 3 on the lower rotating shaft 2 are in contact with each other to achieve cutting.

[0025] Above the upper rotating shaft 1 is an upper horizontal shaft 4, on which are mounted several Y-shaped upper support arms 5. The upper ends of the upper support arms 5 are fitted onto and fixed to the upper horizontal shaft 4. Both ends of the upper support arms 5 are rotatably connected to upper support wheels. The upper rotating shaft 1 is located between two upper support wheels and in contact with their surfaces. The upper horizontal shaft 4, upper support arms 5, and upper support wheels work together to support the upper rotating shaft 1, improving the stability of material cutting. Below the lower horizontal shaft 6 is a lower horizontal shaft 6, on which are mounted several Y-shaped lower support arms 19. The lower ends of the lower support arms 19 are fitted onto and fixed to the lower horizontal shaft 6. Both ends of the lower support arms 19 are rotatably connected to lower support wheels. The lower rotating shaft 2 is located between two lower support wheels and in contact with their surfaces. The lower horizontal shaft 6, lower support arms 19, and lower support wheels work together to support the lower rotating shaft 2, improving the stability of material cutting.

[0026] The waste collection assembly includes an upper crossbeam 10, an upper fixed seat 8, a lower crossbeam, a lower fixed seat 9, a suction pipe 7, and a waste bin. The upper crossbeam 10 is located above the machine body and is fixedly connected to the machine body. There are two upper fixed seats 8, located on the left and right sides of the upper crossbeam 10, respectively. The upper crossbeam 10 has an upper sliding groove, and each upper fixed seat 8 is equipped with an upper slider, which is disposed within the upper sliding groove and moves along the upper sliding groove. A moving opening is provided on the top of the machine body between the conveying roller and the first cutting mechanism, and the lower crossbeam is located below the moving opening and is fixedly connected to the machine body. There are two lower fixed seats 9, located on the left and right sides of the lower crossbeam, respectively. The lower crossbeam has a lower sliding groove, and each lower fixed seat 9 is equipped with a lower slider, which is disposed within the lower sliding groove and moves along the lower sliding groove. There are two suction pipes 7, located on the left and right sides of the top of the machine body, respectively. The end of the suction pipe is located between the conveying roller and the first cutting mechanism and faces the first cutting mechanism. The upper side wall of the suction pipe 7 is fixedly connected to the upper fixed seat 8, and the lower end is fixedly connected to the lower fixed seat 9.

[0027] The conveyor rollers include an upper conveyor roller 11 and a lower conveyor roller, with the upper conveyor roller 11 located above the lower conveyor roller. Screw lifters 12 are installed on both sides of the upper conveyor roller 11 to adjust the gap between the upper and lower conveyor rollers.

[0028] Combination Figure 4 and Figure 5 As shown, the second cutting assembly includes a cutting platform, a second cutting mechanism, a first sliding mechanism, and a second sliding mechanism. The cutting platform includes an upper platform 14, a lower platform 13, and a clamping mechanism. The upper platform 14 is located below the lower platform 13 and is fixedly connected to it. Both the first and second sliding mechanisms include guide rails and sliders. The left and right sides of the bottom of the lower platform 13 are connected to the machine body through the first sliding mechanism, allowing it to move back and forth along the machine body. The second cutting mechanism is located on the upper platform 14 and includes a moving frame 16, a cutting motor 17, and a blade. The front and rear sides of the moving frame 16 are connected to the upper platform 14 through the second sliding mechanism. A rodless cylinder 15 is installed on the upper platform 14. The moving frame 16 is fixedly connected to the slide table connecting seat 23 on the rodless cylinder 15. The rodless cylinder 15 is used to drive the moving frame 16 to move left and right along the upper platform 14. The cutting motor 17 is fixed on the moving frame 16, and the blade is drivenly connected to the cutting motor 17. A cutting opening is provided on the lower platform 13, and the lower part of the blade is adapted to extend into the cutting opening.

[0029] Buffers 18 are provided on both the left and right sides of the upper platform 14. Each buffer 18 includes a cylinder, a telescopic rod, and a buffer head. The cylinder is fixedly connected to the upper platform 14 via a buffer seat. The telescopic rod is disposed inside the cylinder and can move along the cylinder. The buffer head is fixed to the end of the telescopic rod, and a spring is sleeved on the telescopic rod. In this embodiment, the buffer head is made of rubber, which can cushion the moving frame 16 and improve the stability of operation.

[0030] Combination Figure 6 and Figure 7 As shown, the clamping mechanism includes a support beam 24, a pressure rod 29, two first rocker arms 26, two second rocker arms 27, and a clamping cylinder 25. The support beam 24 is located on the upper platform 14 and is fixedly connected to it. The two first rocker arms 26 are located on the left and right sides of the front end face of the support beam 24, respectively, and the two second rocker arms 27 are located on the left and right sides of the rear end face of the support beam 24, respectively. A rotating shaft connects the first rocker arms 26 and the second rocker arms 27, and the first rocker arms 26 have an included angle with respect to the second rocker arms 27. A connecting rod 28 is provided between the two first rocker arms 26. The cylinder of the clamping cylinder 25 is rotatably connected to the support beam 24, and the telescopic rod is rotatably connected to the first rocker arms 26. Two joint bearings are provided on the pressure rod 29. A sliding groove is opened at the top of the pressure rod 29, and a slider is fixed at the bottom of each joint bearing. The slider is disposed in the sliding groove and moves along the sliding groove. The lower end of the second rocker arm 27 is rotatably connected to the joint bearing.

[0031] like Figure 3As shown, the drive assembly includes a drive motor 20, several synchronous pulleys, and several synchronous belts. The drive motor 20 is fixed inside the machine body and is connected to a drive shaft. A synchronous pulley is provided at the end of the drive shaft. Synchronous pulleys are connected to the left ends of the upper conveyor roller 11 and the lower conveyor roller. The drive shaft, the upper conveyor roller 11, and the lower conveyor roller are connected by synchronous belts to achieve synchronous rotation. A synchronous pulley is provided at the right end of the lower conveyor roller and at the right end of the lower rotating shaft 2. The lower conveyor roller and the lower rotating shaft 2 are connected by synchronous belts to achieve synchronous rotation. Several tensioning pulleys are also provided on the machine body between the lower conveyor roller and the lower rotating shaft 2 to tension the synchronous belt between the lower conveyor roller and the lower rotating shaft 2. A pair of left-side synchronous pulleys and a pair of right-side synchronous pulleys are located on the left side below the cutting platform. Both the left and right synchronous pulleys are rotatably connected to the machine body. The two left-side synchronous pulleys are connected by a synchronous belt, and the two right-side synchronous pulleys are also connected by a synchronous belt. A connecting shaft connects the left-side synchronous pulleys to their respective right-side synchronous pulleys, and a synchronous pulley is also mounted on the connecting shaft. The drive shaft of the drive motor 20 is connected to the connecting shaft via a synchronous belt to achieve synchronous rotation. Several tensioning pulleys are also installed between the connecting shaft and the drive shaft. New thin-type guide rod cylinders 21 are installed on both sides of the bottom of the cutting platform to clamp the synchronous belts located between the two left-side synchronous pulleys and between the two right-side synchronous pulleys, thereby achieving synchronous movement. A movable cylinder 22 is installed inside the machine body. The cylinder barrel of the pneumatic cylinder is rotatably connected to the machine body, and the telescopic rod is rotatably connected to the top of the cutting platform.

[0032] In use, the material is placed between the upper rotating shaft 1 and the lower rotating shaft 2. The operator can adjust the spacing of the cutters 3 on the upper rotating shaft 1 and the lower rotating shaft 2 as needed. The cutters 3 on the upper rotating shaft 1 and the lower rotating shaft 2 fit together to cut the material to a preset width. The suction pipe 7 moves along the upper crossbeam 10 using the upper fixed seat 8 and the lower fixed seat 9 moves along the lower crossbeam, so that the opening of the suction pipe 7 is located behind the cutters 3, allowing waste material generated at the cutting edge to enter the suction pipe 7. The waste bin has negative pressure, which can suck the edge waste material into the waste bin for storage. The cut material moves backward to between the upper conveyor roller 11 and the lower conveyor roller, which work together to clamp and convey the material. The top surface of the lower platform 13 and the symmetrical plane between the upper and lower conveyor rollers are approximately on the same plane, facilitating smooth material conveying and preventing wrinkles during cutting. Several length sensors are installed on the upper platform 14 to measure the length of the material on the lower platform 13. When the length of the material on the lower platform 13 reaches the preset standard, several new thin-type guide rod cylinders 21 at the bottom of the lower platform 13 extend downward and cooperate with the L-shaped plate to clamp the synchronous belt between the left synchronous pulley and the synchronous belt between the right synchronous pulley, thereby achieving synchronous movement with the conveyor roller. At the same time, the pressing cylinder 25 retracts, driving the first rocker arm 26 and the second rocker arm 27 to rotate to the right. After rotation, the two second rocker arms 27 press the material onto the lower platform 13 through the pressure rod 29. Then, the rodless cylinder 15 drives the moving frame 16 to move from the left to the right through the slide table connecting seat 23. During the movement of the moving frame 16, the cutting motor 17 drives the blade to cut the material. After the material is cut, several new thin-type guide rod cylinders 21 located at the bottom of the lower platform 13 disengage from the synchronous belts located between the left and right synchronous pulleys; at the same time, the pressing cylinder 25 extends, driving the first rocker arm 26 and the second rocker arm 27 to rotate to the left. After the two second rocker arms 27 rotate, they lift the pressure rod 29. Then the moving cylinder 22 extends and drives the cutting platform forward to reset the cutting platform, and then the subsequent cutting process is repeated.

[0033] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A composite plastic film cutting device, characterized in that: The system includes a body, a first cutting assembly, a second cutting assembly, and a drive assembly. The first cutting assembly is located on one side of the body, and the second cutting assembly is located on the other side of the body. The first cutting assembly includes a first cutting mechanism and a pair of conveying rollers. The second cutting assembly includes a cutting platform, a second cutting mechanism, a first sliding mechanism, and a second sliding mechanism. The cutting platform moves relative to the body via the first sliding mechanism, and the second cutting mechanism moves relative to the cutting platform via the second sliding mechanism. The drive assembly includes a drive motor (20), which drives the first cutting mechanism, the conveying rollers, and the cutting platform to move synchronously via a synchronous pulley and a synchronous belt. The cutting platform is equipped with several new thin-belt guide rod cylinders (21). When the new thin-belt guide rod cylinders (21) are in an extended state, they clamp the synchronous belt to achieve synchronous movement. A moving cylinder (22) is provided at the bottom of the body. The moving cylinder (22) is connected to the cutting platform and drives the cutting platform to reset when the new thin-belt guide rod cylinders (21) are in a retracted state.

2. The composite plastic film cutting device according to claim 1, characterized in that: The first cutting mechanism includes an upper rotating shaft (1) and a lower rotating shaft (2). The upper rotating shaft (1) and the lower rotating shaft (2) are arranged in the vertical direction and are driven by gear meshing. Both the upper rotating shaft (1) and the lower rotating shaft (2) are provided with a plurality of cutting blades (3).

3. The composite plastic film cutting device according to claim 2, characterized in that: An upper horizontal shaft (4) is provided above the upper rotating shaft (1). Several Y-shaped upper support arms (5) are provided on the upper horizontal shaft (4). Both ends of the upper support arms (5) are rotatably connected to upper support wheels. The upper rotating shaft (1) is located between the two upper support wheels and is in contact with the two upper support wheels. Below the lower rotating shaft (2) is a lower horizontal shaft (6), and a plurality of Y-shaped lower support arms (19) are provided on the lower horizontal shaft (6). Both ends of the lower support arms (19) are rotatably connected to lower support wheels. The lower rotating shaft (2) is located between the two lower support wheels and is in contact with the two lower support wheels.

4. The composite plastic film cutting device according to claim 1, characterized in that: It also includes a waste collection assembly, which includes an upper crossbeam (10), an upper fixed seat (8), a suction pipe (7), and a waste bin. The upper crossbeam (10) is located above the machine body, and the two upper fixed seats (8) are arranged on the upper crossbeam (10). The suction pipe (7) is connected to the upper fixed seat (8), and the end of the suction pipe (7) is located between the conveying roller and the first cutting mechanism and faces the first cutting mechanism. The waste bin is connected to the suction pipe (7), and the waste bin has negative pressure.

5. The composite plastic film cutting device according to claim 4, characterized in that: The waste collection assembly includes a lower crossbeam and a lower fixed seat (9). The top of the machine body has a movable opening. The lower crossbeam is located below the movable opening. The bottom of the lower fixed seat (9) is connected to the lower crossbeam, and the top is disposed in the movable opening. The end of the suction pipe (7) is connected to the lower fixed seat (9).

6. The composite plastic film cutting device according to claim 1, characterized in that: The first sliding mechanism and the second sliding mechanism both include a guide rail and a slider. The cutting platform includes an upper platform (14) and a lower platform (13). The second cutting blade structure is disposed on the upper platform (14). The lower platform (13) is connected to the machine body through the first sliding mechanism. The second cutting blade mechanism is connected to the upper platform (14) through the second sliding mechanism. A rodless cylinder (15) is provided on the upper platform (14).

7. The composite plastic film cutting device according to claim 6, characterized in that: The second cutting mechanism includes a moving frame (16), a cutting motor (17) and a blade. The cutting motor (17) is mounted on the moving frame (16). The moving platform is connected to the slide connecting seat (23) on the rodless cylinder (15). The blade is connected to the cutting motor (17) in a transmission connection.

8. The composite plastic film cutting device according to claim 7, characterized in that: The lower platform (13) has a cutting opening, and the lower part of the blade extends into the cutting opening.

9. A composite plastic film cutting device according to claim 6, characterized in that: The upper platform (14) is provided with several buffers (18). Each buffer (18) includes a cylinder, a telescopic rod and a buffer head. The cylinder is fixed on the upper platform (14) by a buffer seat. The telescopic rod is disposed in the cylinder. The buffer head is fixed at the end of the telescopic rod and a spring is sleeved on the telescopic rod.

10. A composite plastic film cutting device according to claim 6, characterized in that: The cutting platform also includes a clamping mechanism, which includes a support beam (24), a pressure rod (29), two first rocker arms (26), two second rocker arms (27), and a clamping cylinder (25). The support beam (24) is located on the upper platform (14). The two first rocker arms (26) are located on the left and right sides of the front end face of the support beam (24), and the two second rocker arms (27) are located on the left and right sides of the rear end face of the support beam (24). A rotating shaft is connected between the first rocker arms (26) and the second rocker arms (27). A connecting rod (28) is provided between the two first rocker arms (26), the cylinder of the pressing cylinder (25) is rotatably connected to the support beam (24), the telescopic rod is rotatably connected to the first rocker arm (26), and the ends of the two second rocker arms (27) are rotatably connected to the pressure rod (29).

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