High-speed slitting device for plastic film

Abstract

The utility model relates to the technical field of plastic film production and discloses a plastic film high -speed slitting device, including support frame, the inside included angle lower end of support frame installs L support board, and L support board top middle part fixedly connected with reciprocating cylinder, and reciprocating cylinder output fixedly connected with the lifting frame, and the inside end of lifting frame is installed with servo motor, and servo motor output fixedly connected with transmission belt pulley, two symmetrical annular clamps that are provided are slidably connected on both support arms of support frame top, and the top of annular clamp is fixedly connected with rotary seat, and the inside end between both end rotary seat insides is all rotatably connected with the rotating rod, and the rotating rod wall is all fixedly connected with the rotating roller, and the roller wall on two rotating rollers is all embedded with driven wheel, the utility model discloses that the transmission belt can be adapted width automatically with the rotating roller interval change, need not to replace transmission component to satisfy the slitting demand of different width plastic film, avoid the trouble that traditional device needs to replace accessory frequently, improve equipment versatility.

Description

Technical Field

[0001] This utility model relates to the field of plastic film production technology, specifically to a high-speed plastic film slitting device. Background Technology

[0002] Plastic films, with their advantages of being lightweight, weather-resistant, and having strong barrier properties, are widely used in food packaging, electronic component encapsulation, printing substrates, and agricultural mulching. In the food industry, they can be used to make vacuum packaging bags, effectively locking in the freshness of ingredients such as meat and baked goods, and isolating them from external oxygen and microbial contamination. The electronics industry relies on ultra-thin films to precisely isolate circuit components, preventing signal interference or short circuits between components and ensuring the stable operation of electronic devices. The printing industry commonly uses wide-format films as a substrate for advertising inkjet printing, presenting clear and vibrant images, suitable for large outdoor advertisements, shopping mall light boxes, and other scenarios. In the agricultural sector, greenhouse mulching is indispensable. These films effectively maintain soil temperature and humidity, reduce water evaporation, create a suitable environment for crop growth, and also prevent the invasion of pests and diseases, thereby improving the yield and quality of agricultural products.

[0003] Therefore, after production, the wide roll of raw plastic film must be precisely cut into specific widths to meet downstream needs using a high-speed plastic film slitting device. At the same time, it is necessary to ensure that the slitting edges are flat and free of burrs to avoid affecting subsequent processing and use. Only in this way can it be successfully used in subsequent stages such as food packaging sealing, electronic component assembly, and advertising inkjet printing.

[0004] However, traditional high-speed plastic film slitting devices are mostly fixed structures. If films of different widths need to be slitting, it is often necessary to disassemble and replace the rollers and adjust the transmission components. This is not only time-consuming and labor-intensive (each adjustment takes a long time), but also prone to affecting the slitting accuracy due to component disassembly and assembly errors, which greatly affects production efficiency. In response, we propose a high-speed plastic film slitting device. Utility Model Content

[0005] The purpose of this invention is to provide a high-speed plastic film slitting device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-speed plastic film slitting device, comprising a support frame, an mounting bracket fixedly installed on the middle of one side of the support frame, a lifting mechanism provided on the mounting bracket, and a high-speed slitting mechanism provided on the lifting mechanism;

[0007] An L-shaped support plate is installed at the lower end of the included angle of the support frame. A reciprocating cylinder is fixedly connected to the middle of the top of the L-shaped support plate. A lifting frame is fixedly connected to the output end of the reciprocating cylinder. A servo motor is installed at the inner end of the lifting frame. A transmission pulley is fixedly connected to the output end of the servo motor. Two symmetrically arranged annular clamps are slidably engaged on the two support arms at the top of the support frame. A rotating seat is fixedly connected to the top of each annular clamp. A rotating rod is rotatably connected between the inner ends of the two rotating seats. A rotating roller is fixedly connected to the wall of each rotating rod. A driven wheel is embedded in the wall of each of the two rotating rollers. A transmission belt is drivingly connected to each of the two driven wheels and the transmission pulley. A first threaded hole is opened through the outer wall of each annular clamp. Several second threaded holes are opened on the outer walls of the two top support arms of the support frame. Bolts are threaded into both the second threaded holes and the first threaded holes.

[0008] Preferably, the support frame is designed to be hollow.

[0009] Preferably, both ends of the inner sidewall of the L-shaped support plate are fixedly connected to limit rods, and the cut surfaces of the limit rods are all I-shaped.

[0010] Preferably, the bottom edge of the lifting frame is slidably engaged with the outer end of the limiting rod.

[0011] Preferably, each of the first threaded holes slides in correspondence with a plurality of second threaded holes.

[0012] Preferably, the lifting mechanism includes a drive cylinder mounted on a support frame and a limiting guide rod disposed on a mounting bracket, wherein the output end of the drive cylinder is connected to a high-speed cutting mechanism.

[0013] Preferably, the high-speed slitting mechanism includes a slitting seat, a driving device, and a slitting blade.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] Benefit 1: Through the sliding fit between the ring clamp and the top support arm of the support frame, combined with the fixing structure of the first threaded hole, the second threaded hole and the bolt, the distance between the two rollers can be easily adjusted.

[0016] Benefit 2: At the same time, the transmission belt can automatically adapt to the width according to the change of the roller spacing, so as not to replace the transmission components to meet the slitting requirements of plastic films of different widths. This avoids the trouble of frequently replacing parts required by traditional equipment, improves the versatility of the equipment, and greatly improves production efficiency.

[0017] Benefit 3: The support frame adopts a hollow design, which not only reduces the overall weight of the equipment and facilitates handling and installation, but also provides sufficient maintenance space for internal components such as rollers and transmission belts, making it easier for daily maintenance and troubleshooting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0022] In the diagram: 1. Support frame; 101. Second threaded hole; 11. L-shaped support plate; 12. Limiting rod; 13. Mounting bracket; 2. Reciprocating cylinder; 21. Lifting frame; 22. Servo motor; 23. Transmission pulley; 24. Transmission belt; 3. Ring clamp; 301. First threaded hole; 30. Bolt; 31. Rotary seat; 32. Rotating rod; 33. Rotating roller; 34. Driven wheel; 4. Lifting mechanism; 5. High-speed cutting mechanism. Detailed Implementation

[0023] like Figures 1-4 As shown, this utility model provides the following technical solution:

[0024] Example 1: A high-speed plastic film slitting device includes a support frame 1, a mounting frame 13 fixedly installed on the middle of one side of the support frame 1, a lifting mechanism 4 provided on the mounting frame 13, and a high-speed slitting mechanism 5 provided on the lifting mechanism 4. The support frame 1 is hollow in shape. The lifting mechanism 4 includes a drive cylinder installed on the support frame 1 and a limit guide rod provided on the mounting frame 13. The output end of the drive cylinder is connected to the high-speed slitting mechanism 5. The high-speed slitting mechanism 5 includes a slitting seat, a drive device, and a slitting blade.

[0025] Specifically, the support frame 1 is designed with a hollow structure to reduce the overall weight of the device and facilitate installation and handling; at the same time, it provides more space for operation and maintenance of internal components (such as the rotating roller 33 and the transmission belt 24).

[0026] The driving cylinder of the lifting mechanism 4 provides lifting power to the high-speed slitting mechanism 5, realizing the contact / separation control between the slitting blade and the film; the limiting guide rod restricts the movement direction of the high-speed slitting mechanism 5 to prevent deviation and ensure slitting accuracy;

[0027] In the high-speed slitting mechanism 5, the slitting seat serves as a carrier to fix the driving device and the slitting blade; the driving device provides high-speed rotational power to the slitting blade; the slitting blade acts directly on the film to complete the slitting operation.

[0028] In use, the height of the high-speed slitting mechanism 5 is adjusted by the lifting mechanism 4 on the mounting frame 13. The drive cylinder drives the high-speed slitting mechanism 5 to move up or down along the limit guide rod until the slitting blade contacts and matches the film to be slitted. The drive device of the high-speed slitting mechanism 5 is started to drive the slitting blade to rotate at high speed. At the same time, the film is transported to the slitting position through the support structure. The slitting blade continuously cuts the film to complete the slitting operation.

[0029] Example 2: The technical solution of this example, which differs from Example 1, includes: an L-shaped support plate 11 is installed at the lower end of the inner angle of the support frame 1; a reciprocating cylinder 2 is fixedly connected to the middle of the top of the L-shaped support plate 11; a lifting frame 21 is fixedly connected to the output end of the reciprocating cylinder 2; a servo motor 22 is installed at the inner end of the lifting frame 21; a transmission pulley 23 is fixedly connected to the output end of the servo motor 22; two symmetrically arranged annular clamps 3 are slidably engaged on the two support arms at the top of the support frame 1; a rotating seat 31 is fixedly connected to the top of each annular clamp 3; a rotating rod 32 is rotatably connected between the inner ends of the two rotating seats 31; and a rotating roller 33 is fixedly connected to the wall of the rotating rod 32. Each roller 33 has a driven wheel 34 embedded in its wall. Both driven wheels 34 are connected to the transmission belt 24 via a transmission belt 24. The outer wall of the annular clamp 3 has a first threaded hole 301 through it. The outer walls of the two top support arms of the support frame 1 have several second threaded holes 101. Bolts 30 are threaded into the second threaded holes 101 and the first threaded holes 301. Limiting rods 12 are fixedly connected to both ends of the inner side wall of the L support plate 11. The cut surfaces of the limiting rods 12 are all I-shaped. The bottom edge of the lifting frame 21 is slidably locked to the outer end of the limiting rod 12. The first threaded hole 301 corresponds to several second threaded holes 101 in a sliding manner.

[0030] Among them, the two ends of the inner sidewall of the L-support plate 11 are fixed with I-shaped limiting rods 12, which can provide a stable sliding guide track for the lifting frame 21 and limit its lateral displacement.

[0031] The bottom edge of the lifting frame 21 slides and is locked to the outer end of the limit rod 12, ensuring that the lifting frame 21 is accurately raised and lowered along the limit rod 12 under the drive of the reciprocating cylinder 2.

[0032] The first threaded hole 301 slides in correspondence with several second threaded holes 101. The annular clamp 3 can be fixed by inserting the bolt 30 into the corresponding threaded hole, so as to realize the flexible adjustment of the distance between the rollers 33 and adapt to films of different widths.

[0033] In use, first, according to the width of the film to be cut, loosen the bolts 30 on the annular clamp 3, so that the annular clamp 3 slides along the top support arm of the support frame 1, driving the rotating roller 33 to move synchronously to adjust the distance between the two rotating rollers 33; after adjustment, screw the bolts 30 into the corresponding second threaded hole 101 and first threaded hole 301 to fix the annular clamp 3 and the rotating roller 33. At this time, the transmission belt 24 automatically adapts and adjusts the width according to the change of the distance between the rotating rollers 33; start the reciprocating cylinder 2 to drive the lifting frame 21 to move up and down along the limit rod 12 to keep the transmission belt 24 at a suitable tension; start the servo motor 22, which drives the driven wheel 34 and the rotating roller 33 to rotate through the transmission pulley 23 and the transmission belt 24. The film is transported to the bottom of the high-speed slitting mechanism 5 through the two rotating rollers 33, and completes high-speed slitting in conjunction with the high-speed slitting mechanism 5 to meet the slitting requirements of films of different widths.

Claims

1. A high-speed plastic film slitting device, comprising a support frame (1), wherein a mounting frame (13) is fixedly installed in the middle of one side of the support frame (1), a lifting mechanism (4) is provided on the mounting frame (13), and a high-speed slitting mechanism (5) is provided on the lifting mechanism (4). Its features are: An L-shaped support plate (11) is installed at the lower end of the inner angle of the support frame (1). A reciprocating cylinder (2) is fixedly connected to the middle of the top of the L-shaped support plate (11). A lifting frame (21) is fixedly connected to the output end of the reciprocating cylinder (2). A servo motor (22) is installed at the inner end of the lifting frame (21). A transmission pulley (23) is fixedly connected to the output end of the servo motor (22). Two symmetrically arranged annular clamps (3) are slidably engaged on the two support arms at the top of the support frame (1). A rotating seat (31) is fixedly connected to the top of each annular clamp (3). The rotating seats (31) at both ends are connected to the inner... Rotating rods (32) are rotatably connected between the ends. Rotating rollers (33) are fixedly connected to the walls of the rotating rods (32). Driven wheels (34) are embedded on the walls of the two rotating rollers (33). Driven wheels (34) are connected to the two driven wheels (34) and the drive pulleys (23) by a drive belt (24). A first threaded hole (301) is opened through the outer wall of the ring clamp (3). Several second threaded holes (101) are opened on the outer walls of the two top support arms of the support frame (1). Bolts (30) are threaded into the second threaded holes (101) and the first threaded holes (301).

2. The high-speed plastic film slitting device according to claim 1, characterized in that: The support frame (1) is hollowed out as a whole.

3. The high-speed plastic film slitting device according to claim 1, characterized in that: Both ends of the inner sidewall of the L support plate (11) are fixedly connected to limit rods (12), and the cut surfaces of the limit rods (12) are all set in an I-shape.

4. The high-speed plastic film slitting device according to claim 1, characterized in that: The bottom edge of the lifting frame (21) is slidably locked to the outer end of the limiting rod (12).

5. The high-speed plastic film slitting device according to claim 1, characterized in that: The first threaded hole (301) corresponds to several second threaded holes (101) in a sliding manner.

6. The high-speed plastic film slitting device according to claim 1, characterized in that: The lifting mechanism (4) includes a drive cylinder mounted on the support frame (1) and a limiting guide rod set on the mounting bracket (13). The output end of the drive cylinder is connected to the high-speed cutting mechanism (5).

7. The high-speed plastic film slitting device according to claim 1, characterized in that: The high-speed slitting mechanism (5) includes a slitting seat, a drive device, and a slitting blade.

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