Continuous punching device for plastic film production

Abstract

The utility model relates to the technical field of punching devices, in particular to a continuous punching device for plastic film production, which comprises a worktable and two groups of transmission mechanisms arranged at the top of the worktable, and two groups of mounting frames capable of getting close to or getting away from each other are symmetrically arranged at the tops and the bottoms of the two groups of transmission mechanisms. A first tool apron is longitudinally fixed on one side of one group of mounting frames, and a punching knife for punching a plastic film is longitudinally fixed on one side of the first tool apron; two sets of fixing pieces capable of fixing the punching cutter are longitudinally fixed to one side of the first cutter holder. A top block used for positioning the plastic film is installed in the fixing piece. Wherein a mounting seat is longitudinally fixed on one side of the other group of mounting racks, and a second tool apron is longitudinally mounted on one side of the mounting seat. According to the continuous punching device, the problem that when a continuous punching device punches a plastic film, the plastic film is bent, and the punching quality is affected is solved.

Description

Technical Field

[0001] This utility model relates to the field of punching device technology, specifically to a continuous punching device for plastic film production. Background Technology

[0002] Plastic film punching equipment is a processing machine specifically designed for plastic film materials. Through its precise mechanical structure and efficient punching technology, it can quickly and accurately punch holes of various shapes and sizes into plastic films. This equipment is widely used in packaging, agriculture, construction, and other industries to improve the air permeability and drainage of plastic films or to facilitate installation and fixation. It is easy to operate, has high punching efficiency, and ensures the accuracy of the punching position and the overall strength of the plastic film, making it an indispensable tool in modern plastic film processing.

[0003] Chinese patent CN221697177U discloses a punching machine for a plastic film production line. The machine is fixedly mounted on a base via a punching seat. The punching seat has a round hole and a through groove that communicates with the round hole. A bracket is fixedly mounted on the base, a traction roller is rotatably mounted on the bracket, and a suction device is mounted on the base. A mounting frame is fixedly mounted on the base and located on the side of the base closest to the round hole. A sliding frame is fixedly mounted on the mounting frame, and a sliding plate is slidably mounted on the sliding frame via a drive assembly. A punching needle is fixedly mounted on the sliding plate. Through the cooperation of the drive assembly and the sliding plate, the sliding plate drives the punching needle to move up and down, punching holes in the plastic film. This achieves vertical punching of the plastic film and avoids the punching needle pulling on the plastic film.

[0004] The punching machine described in the aforementioned patent document uses a sliding plate that moves longitudinally back and forth to drive the punching needle at the bottom to punch holes in the plastic film on the upper surface of the punching seat when punching plastic film. However, while existing punching machines can perform the punching operation, they cannot fix the plastic film in place during punching, causing the plastic film to easily deform due to the impact of the punching needle, or even shift. Therefore, a continuous punching device for plastic film production is proposed. Utility Model Content

[0005] To address the aforementioned problems, a continuous punching device for plastic film production is provided. By moving two sets of mounting brackets closer together or further apart, the first cutter holder and the mounting base are driven together, causing a top block installed inside a fixing member on one side of the first cutter holder to insert into a limiting groove to fix the plastic film. Simultaneously, the first cutter holder, through the fixing member, drives the punching blade to penetrate the plastic film until the punching blade completely pierces through the film. This solves the problem of plastic film bending during punching, which affects the punching quality.

[0006] To address the existing technical problems, this application provides a continuous punching device for plastic film production, including a worktable and two sets of transmission mechanisms disposed on the top of the worktable. The top and bottom of the two sets of transmission mechanisms are symmetrically provided with two sets of mounting frames that can move closer to or further away from each other. A first knife holder is longitudinally fixed on one side of one set of mounting frames, and a punching knife for punching plastic film is longitudinally fixed on one side of the first knife holder.

[0007] Two sets of fixing members that can fix the punching tool are longitudinally fixed on one side of the first tool holder;

[0008] The fastener has a top block installed inside for positioning the plastic film;

[0009] One of the mounting brackets has a mounting base fixed longitudinally on one side, and a second tool holder is mounted longitudinally on one side of the mounting base. The second tool holder has a tool groove on one side that can be adapted to the punching tool.

[0010] The second tool holder has a limiting groove on one side that can be adapted to the top block.

[0011] As one technical solution of this application, a first mounting groove is provided on one side of the first tool holder; a second mounting groove is provided on the side of the fixing member near the first tool holder, which can be adapted to the first mounting groove and is equal in number, and the top block is movably installed inside the second mounting groove.

[0012] As one technical solution of this application, a number of spring limiting rods corresponding to the number of first mounting slots are fixed on one side of the top block. A reset spring for pushing the top block to extend out of the fixing member is installed inside the first mounting slot. One end of the reset spring is installed outside the spring limiting rod.

[0013] As one technical solution of this application, the transmission mechanism includes two crankshafts that can rotate synchronously, and the mounting bracket is installed on the top and bottom ends of the crankshafts.

[0014] As one technical solution of this application, the two sets of transmission mechanisms are symmetrically arranged with two rotatable active rotating shafts inside, one of which can be connected to an external motor at its bottom end; and the bottom ends of the two active rotating shafts are respectively equipped with third gears that can mesh with each other.

[0015] As one technical solution of this application, a rotatable driven rotating shaft is provided inside the two sets of transmission mechanisms on the side near the crankshaft, and a fourth gear for transmission is installed at the top of the driven rotating shaft.

[0016] As one technical solution of this application, a first gear is also installed on the outside of the crankshaft, and the first gear can mesh with a fourth gear.

[0017] As one technical solution of this application, a second gear for driving the fourth gear is also installed on the outside of the active rotating shaft, and the second gear can mesh with the fourth gear.

[0018] The advantages of this utility model compared to the prior art are:

[0019] This application utilizes the mutual approach or distance of two sets of mounting brackets to drive the first cutter holder and the mounting base, causing the top block installed inside the fixing member on one side of the first cutter holder to insert into the limiting groove and fix the plastic film. Simultaneously, the first cutter holder, through the fixing member, drives the punching blade to penetrate the plastic film until the punching blade completely pierces through the plastic film. This solves the problem of plastic film bending and affecting punching quality when punching plastic film in continuous punching devices. Attached Figure Description

[0020] Figure 1 This is a perspective view of a continuous perforation device used in the production of plastic film.

[0021] Figure 2 A three-dimensional structural diagram of the transmission mechanism in a continuous punching device for plastic film production. Figure 1 .

[0022] Figure 3 A three-dimensional structural diagram of the transmission mechanism in a continuous punching device for plastic film production. Figure 2 .

[0023] Figure 4 This is a top view of the transmission mechanism in a continuous punching device used in plastic film production.

[0024] Figure 5 yes Figure 4 Sectional view at point AA.

[0025] Figure 6 This is a partial sectional view of the transmission mechanism in a continuous punching device used in plastic film production.

[0026] Figure 7 This is a perspective view of the first cutter holder in a continuous punching device used for plastic film production.

[0027] Figure 8 This is a perspective view of a punching blade in a continuous punching device used in plastic film production.

[0028] Figure 9 This is a perspective view of the second cutter holder in a continuous punching device used for plastic film production.

[0029] Figure 10 yes Figure 6 Enlarged view of point B in the image.

[0030] The following are the labels in the diagram: 1. Worktable; 20. Transmission mechanism; 21. Crankshaft; 211. First gear; 22. Driven rotating shaft; 221. Second gear; 222. Third gear; 23. Driven rotating shaft; 231. Fourth gear; 24. First tool holder; 241. Fixing component; 242. First mounting slot; 243. Return spring; 244. Second mounting slot; 25. Drilling tool; 26. Top block; 261. Spring limit rod; 27. Mounting base; 28. Second tool holder; 281. Limiting slot; 282. Tool groove; 29. ​​Mounting bracket. Detailed Implementation

[0031] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments.

[0032] See Figures 1-10 As shown, a continuous punching device for plastic film production includes a worktable 1 and two sets of transmission mechanisms 20 disposed on the top of the worktable 1. The top and bottom of the two sets of transmission mechanisms 20 are symmetrically provided with two sets of mounting brackets 29 that can approach or move away from each other. A first knife holder 24 is longitudinally fixed on one side of one set of mounting brackets 29, and a punching knife 25 for punching plastic film is longitudinally fixed on one side of the first knife holder 24.

[0033] Two sets of fasteners 241 that can fix the punching tool 25 are longitudinally fixed on one side of the first tool holder 24.

[0034] The fastener 241 has a top block 26 installed inside for positioning the plastic film;

[0035] One of the mounting brackets 29 has a mounting base 27 fixed longitudinally on one side, and a second tool holder 28 is mounted longitudinally on one side of the mounting base 27. The second tool holder 28 has a tool groove 282 on one side that can be adapted to the punching tool 25.

[0036] The second tool holder 28 has a limiting groove 281 on one side that can be adapted to the top block 26.

[0037] When the two sets of mounting brackets 29 approach each other, the first cutter holder 24 mounted on one set of mounting brackets 29 and the mounting base 27 mounted on the other set approach each other. When the first cutter holder 24 and the mounting base 27 approach each other, firstly, the first cutter holder 24 will drive the top block 26 to contact the plastic film and press the plastic film into the limiting groove 281, so that the plastic film is in a taut state. Then, the first cutter holder 24 drives the punch 25 through the fixing member 241, so that the punch 25 gradually approaches the plastic film until the punch 25 penetrates the plastic film. In order to avoid the blade from colliding during punching, a blade groove 282 is opened on one side of the second cutter holder 28. When the punch 25 punches the plastic film, the working end of the punch 25 will be inserted into the blade groove 282, thereby avoiding collision damage to the punch 25. When the two sets of mounting brackets 29 move away from each other, the two sets of mounting brackets 29 respectively drive the first cutter holder 24 and the mounting base 27 away from each other. At this time, the punching knife 25 installed on one side of the first knife holder 24 separates from the knife groove 282 so that the plastic film can continue to be fed.

[0038] See Figure 10 As shown, a first mounting groove 242 is provided on one side of the first tool holder 24; a second mounting groove 244 is provided on the side of the fastener 241 near the first tool holder 24, which can be adapted to the first mounting groove 242 and is equal in number, and the top block 26 is movably installed inside the second mounting groove 244.

[0039] The fixing member 241 has a second mounting groove 244 on the side near the first tool holder 24. The number of second mounting grooves 244 is equal to the number of first mounting grooves 242 and their shapes are compatible. Then, the top block 26 is installed inside the second mounting groove 244, so that the top block 26 can move horizontally along the inside of the second mounting groove 244, providing sufficient space for the movement of the top block 26.

[0040] See Figure 10 As shown, a number of spring limiting rods 261 corresponding to the number of first mounting slots 242 are fixed on one side of the top block 26. A reset spring 243 for pushing the top block 26 out of the fixing member 241 is installed inside the first mounting slot 242. One end of the reset spring 243 is installed outside the spring limiting rod 261.

[0041] To enable the top block 26 to quickly reset, a reset spring 243 is installed inside the first mounting groove 242, and the end of the reset spring 243 away from the first mounting groove 242 is installed outside the spring limiting rod 261. When the top block 26 separates from the limiting groove 281, the reset spring 243 can push the top block 26 to extend into the fixing member 241.

[0042] See Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the transmission mechanism 20 includes two crankshafts 21 that can rotate synchronously, and the mounting bracket 29 is mounted on the top and bottom ends of the crankshafts 21.

[0043] By mounting the mounting bracket 29 on the top and bottom of the crankshaft 21, the crankshaft 21 can drive the mounting bracket 29 to reciprocate as it rotates.

[0044] See Figure 2 , Figure 3 and Figure 5 As shown, two sets of transmission mechanisms 20 have two symmetrically arranged active rotating shafts 22 inside, one of which can be connected to an external motor at its bottom end; the bottom ends of the two active rotating shafts 22 are respectively equipped with third gears 222 that can mesh with each other.

[0045] By installing meshing third gears 222 at the bottom ends of the two drive rotating shafts 22, and then connecting one end of the drive rotating shafts 22 to an external motor, when the motor starts, it can drive one of the drive rotating shafts 22 to rotate synchronously. Simultaneously, as one drive rotating shaft 22 rotates, the meshing third gears 222 drive the other drive rotating shaft 22 to rotate synchronously. This effectively ensures that the two drive rotating shafts 22 can rotate synchronously.

[0046] See Figure 2 , Figure 3 and Figure 5 As shown, a driven rotating shaft 23 capable of rotation is provided inside the two sets of transmission mechanisms 20 on the side near the crankshaft 21, and a fourth gear 231 for transmission is installed at the top of the driven rotating shaft 23.

[0047] Inside the two sets of transmission mechanisms 20, a rotatable driven rotating shaft 23 is arranged on one side near the crankshaft 21. A fourth gear 231 is fixed at the top of the driven rotating shaft 23 to drive the crankshaft 21 to rotate, so that the crankshaft 21 and the driven rotating shaft 23 rotate synchronously.

[0048] See Figure 2 , Figure 3 and Figure 5 As shown, a first gear 211 is also mounted on the outside of the crankshaft 21, and the first gear 211 can mesh with the fourth gear 231.

[0049] A first gear 211 is fixed to the outside of the crankshaft 21, and the first gear 211 can mesh with a fourth gear 231. Specifically, the first gear 211 is firmly mounted on the crankshaft 21 and can mesh with the fourth gear 231. This allows the fourth gear 231 to drive the crankshaft 21 to rotate synchronously by driving the first gear 211, thereby effectively transmitting the rotational power of the fourth gear 231 to the crankshaft 21 through the first gear 211.

[0050] See Figure 2 , Figure 3 and Figure 5 As shown, a second gear 221 for driving the fourth gear 231 is also installed on the outside of the active rotating shaft 22. The second gear 221 can mesh with the fourth gear 231.

[0051] When an external motor drives the active rotating shaft 22 to rotate, the active rotating shaft 22 drives the second gear 221 to rotate synchronously. At this time, the second gear 221 drives the fourth gear 231, which meshes with it, to rotate. When the active rotating shaft 22 is driven by an external motor, the second gear 221 rotates accordingly and, through its meshing with the fourth gear 231, effectively transmits rotational power to the fourth gear 231.

[0052] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A continuous punching device for plastic film production, comprising a worktable (1) and two sets of transmission mechanisms (20) disposed on the top of the worktable (1), characterized in that, The top and bottom of the two sets of transmission mechanisms (20) are symmetrically provided with two sets of mounting brackets (29) that can approach or move away from each other. One set of mounting brackets (29) has a first knife holder (24) longitudinally fixed on one side, and a punching knife (25) for punching holes in the plastic film is longitudinally fixed on one side of the first knife holder (24). Two sets of fasteners (241) that can fix the punching tool (25) are longitudinally fixed on one side of the first tool holder (24); The fastener (241) has a top block (26) installed inside for positioning the plastic film; One of the other mounting brackets (29) has a mounting base (27) fixed longitudinally on one side, and a second tool holder (28) is mounted longitudinally on one side of the mounting base (27). The second tool holder (28) has a tool groove (282) on one side that can be adapted to the punching tool (25). The second tool holder (28) has a limiting groove (281) on one side that can be adapted to the top block (26).

2. The continuous punching device for plastic film production according to claim 1, characterized in that, The first tool holder (24) has a first mounting groove (242) on one side; the fixing member (241) has a second mounting groove (244) on the side near the first tool holder (24) that can be adapted to the first mounting groove (242) and is equal in number, and the top block (26) is movably installed inside the second mounting groove (244).

3. The continuous punching device for plastic film production according to claim 1, characterized in that, One side of the top block (26) is fixed with a number of spring limiting rods (261) corresponding to the first mounting groove (242). The first mounting groove (242) is equipped with a return spring (243) for pushing the top block (26) to extend out of the fixing member (241). One end of the return spring (243) is installed outside the spring limiting rod (261).

4. The continuous punching device for plastic film production according to claim 1, characterized in that, The transmission mechanism (20) includes two crankshafts (21) that can rotate synchronously, and a mounting bracket (29) is mounted on the top and bottom of the crankshafts (21).

5. A continuous punching device for plastic film production according to claim 1, characterized in that, The two sets of transmission mechanisms (20) are symmetrically arranged with two rotatable active rotating shafts (22), one of which has its bottom end connected to an external motor; the bottom ends of the two active rotating shafts (22) are respectively equipped with a third gear (222) that can mesh with each other.

6. A continuous punching device for plastic film production according to claim 1, characterized in that, The two sets of transmission mechanisms (20) have a driven rotating shaft (23) that can rotate on the side near the crankshaft (21) inside, and a fourth gear (231) for transmission is installed at the top of the driven rotating shaft (23).

7. A continuous punching device for plastic film production according to claim 4, characterized in that, The crankshaft (21) is also equipped with a first gear (211), which can mesh with a fourth gear (231).

8. A continuous punching device for plastic film production according to claim 5, characterized in that, The active rotating shaft (22) is also equipped with a second gear (221) for driving the fourth gear (231), and the second gear (221) can mesh with the fourth gear (231).

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