A length cutting machine for a protective film

Abstract

This utility model belongs to the field of protective film processing, specifically relating to a fixed-length slitting machine for protective films. It includes a frame, with a winding shaft rotatably connected to the inner wall of the frame. A movable component and a cutting component are mounted on the frame. The movable component includes a slide rail, which is fixedly connected to the outer wall of the frame. A C-shaped carriage is fixedly connected to the top of the slide rail, and an extension plate is fixedly connected to the top of the C-shaped carriage. A positioning rod is slidably connected to the inner wall of the extension plate. This fixed-length slitting machine allows adjustment of the slider's position on the convex seat by loosening the abutment screw, causing the support slider and the force-bearing wheel to move synchronously, thereby changing the slitting length. It can adapt to different fixed-length requirements without replacing parts. A limiting sleeve can fix film tubes of different widths, and the guide rollers and cutting platform work together to adapt to protective films of various thicknesses, significantly improving the device's adaptability to slitting different specifications of protective films and reducing adjustment time.

Description

Technical Field

[0001] This utility model relates to the field of protective film processing technology, specifically a fixed-length slitting machine for protective films. Background Technology

[0002] Protective films are widely used in electronics, home appliances, building materials, and other fields. Different application scenarios have different requirements for the length, width, and thickness of the protective film, which needs to be cut into finished products of specified lengths using a fixed-length slitting machine. With the diversification of protective film application needs, higher requirements are placed on the fixed-length flexibility, specification adaptability, and slitting accuracy of the slitting machine.

[0003] Currently, traditional protective film fixed-length slitting machines have a fixed fixed-length structure, requiring the replacement of positioning components of different specifications to adjust the slitting length, which is cumbersome and has poor adaptability. Some devices lack linkage slitting function, requiring manual control of the cutting timing, which easily leads to large errors in the slitting length and makes it difficult to meet the fixed-length slitting needs of diverse protective films. In view of this, we propose a fixed-length slitting machine for protective films. Utility Model Content

[0004] The main objective of this invention is to provide a fixed-length slitting machine for protective films, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention proposes a fixed-length slitting machine for protective films, comprising a frame, a winding shaft rotatably connected to the inner wall of the frame, a movable component mounted on the frame, and a cutting component mounted on the frame, the movable component comprising: Slide rail one, the outer wall of the frame is fixedly connected to slide rail one, and the top of slide rail one is fixedly connected to C-shaped slide bracket; An extension plate is fixedly connected to the top of the C-shaped carriage, and a positioning rod is slidably connected to the inner wall of the extension plate; A toggle plate is fixedly connected to the top of the positioning rod, and a positioning hole is provided on the frame.

[0006] Preferably, the outer wall of the C-shaped carriage is fixedly connected to a second slide rail, and the outer wall of the second slide rail is slidably connected to a supporting slider.

[0007] Preferably, a support rod is fixedly connected to the inner wall of the support slider, and a force-bearing wheel is rotatably connected to the outer wall of the support rod.

[0008] Preferably, the cutting assembly includes a fixing plate, a guide rod is slidably connected to the inner wall of the fixing plate, a convex seat is fixedly connected to the top of the guide rod, and a guide groove is formed on the convex seat.

[0009] Preferably, the inner wall of the guide groove is slidably connected to a guide slider, the outer wall of the guide slider is fixedly connected to an adjusting slider, the inner wall of the adjusting slider is threadedly connected to an abutment screw, and the outer wall of the adjusting slider is fixedly connected to a connecting rod. The connecting rod has an insertion slot, into which the supporting slider can be inserted.

[0010] Preferably, a mounting base is fixedly connected to the top of the convex seat, a blade holder is fixedly connected to the top of the mounting base, and a cutting blade is detachably connected to the inner wall of the blade holder, with the cutting blade and the blade holder being detachably connected by screws.

[0011] Preferably, a cutting platform is fixedly connected to the outer wall of the frame, a guide roller is fixedly connected to the top of the cutting platform, and a roller is rotatably connected to the inner wall of the frame. The cutting platform is located below the cutting blade, and two sets of guide rollers are provided and distributed on both sides of the cutting platform. The guide rollers guide the protective film to avoid contact between the protective film and the cutting blade.

[0012] Preferably, the inner wall of the frame is rotatably connected to an unwinding shaft, and the outer wall of the rewinding shaft is fitted with a limiting sleeve. The limiting sleeve is provided with a threaded through hole and a fixing screw is threadedly connected to it. Both the unwinding shaft and the rewinding shaft are provided with notched planes to facilitate the contact between the fixing screw and the notched planes.

[0013] This invention provides a fixed-length slitting machine for protective films. It has the following advantages: (1) The protective film can be adjusted by loosening the abutment screw to adjust the position of the slider on the convex seat, which drives the support slider and the force wheel to move synchronously, thereby changing the cutting length. It can adapt to different fixed length requirements without replacing parts; the limit sleeve can fix film tubes of different widths, and the guide roller and the cutting platform can adapt to protective films of various thicknesses, greatly improving the adaptability of the device to cutting protective films of different specifications and reducing adjustment time.

[0014] (2) The movable components and cutting components of the protective film fixed-length slitting machine are linked by the insertion of the support slider and the connecting rod. After the force wheel contacts the winding film, it can automatically drive the cutting blade to descend, realizing the synchronous linkage of "winding-slitting" and avoiding manual operation errors. The positioning rod locks the position of the C-shaped slide and the abutment screw fixes the adjusting slider. With the help of the guide rod, slide rail and other structures, the movement of each component is stable, so that the cutting blade can cut accurately and ensure that the cut of the protective film is flat and of consistent length after slitting. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a cross-sectional view of the cutting platform and C-shaped carriage of this utility model; Figure 3 This is a cross-sectional view of the convex seat and the knife holder of this utility model. Figure 4 This is a cross-sectional view of the extension plate and connecting rod of this utility model.

[0017] Explanation of reference numerals: 1. Frame; 2. Rewind shaft; 3. Movable component; 31. Slide rail one; 32. C-shaped slide; 33. Outer extension plate; 34. Positioning rod; 35. Actuating plate; 36. Positioning hole; 37. Slide rail two; 38. Support slider; 39. Support rod; 310. Force-bearing wheel; 4. Cutting component; 41. Fixing plate; 42. Guide rod; 43. Convex seat; 44. Guide groove; 45. Guide slider; 46. Adjusting slider; 47. Abutment screw; 48. Connecting rod; 49. Mounting seat; 410. Knife holder; 411. Cutting knife; 5. Cutting platform; 6. Guide roller; 7. Passing roller; 8. Unwind shaft; 9. Limiting sleeve.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0020] Please see Figures 1-4This utility model proposes a fixed-length slitting machine for protective film, including a frame 1, a winding shaft 2 rotatably connected to the inner wall of the frame 1, a movable component 3 and a cutting component 4 on the frame 1, the movable component 3 including a slide rail 31, the slide rail 31 fixedly connected to the outer wall of the frame 1, a C-shaped carriage 32 fixedly connected to the top of the slide rail 31, an extension plate 33 fixedly connected to the top of the C-shaped carriage 32, a positioning rod 34 slidably connected to the inner wall of the extension plate 33, a toggle plate 35 fixedly connected to the top of the positioning rod 34, and a positioning hole 36 opened on the frame 1.

[0021] In this utility model, a slide rail 37 is fixedly connected to the outer wall of the C-shaped slide 32, a support slider 38 is slidably connected to the outer wall of the slide rail 37, a support rod 39 is fixedly connected to the inner wall of the support slider 38, and a force-receiving wheel 310 is rotatably connected to the outer wall of the support rod 39.

[0022] Furthermore, the cutting assembly 4 includes a fixed plate 41, with a guide rod 42 slidably connected to the inner wall of the fixed plate 41. The sliding engagement with the fixed plate 41 ensures the vertical lifting and lowering of the convex seat 43, preventing the cutting blade 411 from shifting. The top of the guide rod 42 is fixedly connected to the convex seat 43, which has a guide groove 44. A guide slider 45 is slidably connected to the inner wall of the guide groove 44. An adjusting slider 46 is fixedly connected to the outer wall of the guide slider 45, and a locking screw 47 is threaded onto the inner wall of the adjusting slider 46. A connecting rod 48 is fixedly connected to the outer wall of block 46. The connecting rod 48 has an insertion slot. The supporting slider 38 can be inserted into the insertion slot. By loosening the abutment screw 47, the fixed state of the adjusting slider 46 can be released, making it easy to change its position on the convex seat 43. A mounting base 49 is fixedly connected to the top of the convex seat 43. A knife holder 410 is fixedly connected to the top of the mounting base 49. A cutting blade 411 is detachably connected to the inner wall of the knife holder 410. The detachable connection between the cutting blade 411 and the knife holder 410 is completed by screws.

[0023] Furthermore, a cutting platform 5 is fixedly connected to the outer wall of the frame 1, and a guide roller 6 is fixedly connected to the top of the cutting platform 5. A roller 7 is rotatably connected to the inner wall of the frame 1. The cutting platform 5 is located below the cutting blade 411. Two sets of guide rollers 6 are provided and distributed on both sides of the cutting platform 5. The guide rollers 6 guide the protective film to avoid contact between the protective film and the cutting blade 411. A wear-resistant rubber pad is pasted on the surface of the cutting platform 5, which can buffer the impact of the cutting blade 411 and prevent the platform from scratching the protective film. An unwinding shaft 8 is rotatably connected to the inner wall of the frame 1. A limiting sleeve 9 is sleeved on the outer wall of the take-up shaft 2. The limiting sleeve 9 is provided with a threaded through hole and a fixing screw is threadedly connected. Both the unwinding shaft 8 and the take-up shaft 2 have notched planes to facilitate the contact between the fixing screw and the notched plane. By tightening the notched plane of the take-up shaft 2 with the fixing screw, film tubes of different widths can be firmly fixed to prevent slippage during winding.

[0024] It should be noted that the above electrical components are all existing technology products. Those skilled in the art should select, install and complete the circuit debugging work according to the needs of use to ensure that all electrical appliances can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be known by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here.

[0025] In use, the C-shaped carriage 32 is fixed by inserting the positioning rod 34 into the positioning hole 36, thereby moving the support slider 38 directly below the winding shaft 2. At the same time, the design of the insertion slot makes it easy for the support slider 38 to be inserted into the insertion slot. The movement of the support slider 38 is guided by the slide rail 37 to prevent the support slider 38 from separating from the connecting rod 48 at this time. When the protective film wound on the take-up shaft 2 comes into contact with the force wheel 310, the force wheel 310 is moved downward, which in turn causes the support slider 38 to move downward. This, in conjunction with the connecting rod 48, drives the adjusting slider 46 to move, which in turn causes the convex seat 43 to move downward, so that the cutting blade 411 works with the cutting platform 5 to cut the protective film. By loosening the abutment screw 47, we can easily change the position of the adjusting slider 46 on the convex seat 43, so that the position of the connecting rod 48 changes synchronously, which in turn makes it easy to make the supporting slider 38 change synchronously, and the position of the force wheel 310 change, so that the device can perform cutting work of different lengths.

[0026] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A fixed-length slitting machine for protective films, comprising a frame (1), characterized in that: A winding shaft (2) is rotatably connected to the inner wall of the frame (1). A movable component (3) is provided on the frame (1). A cutting component (4) is provided on the frame (1). The movable component (3) includes: Slide rail 1 (31), the outer wall of the frame (1) is fixedly connected to slide rail 1 (31), and the top of slide rail 1 (31) is fixedly connected to C-shaped slide (32). An extension plate (33) is fixedly connected to the top of the C-shaped carriage (32), and a positioning rod (34) is slidably connected to the inner wall of the extension plate (33). A toggle plate (35) is fixedly connected to the top of the positioning rod (34), and a positioning hole (36) is provided on the frame (1).

2. The protective film fixed-length slitting machine according to claim 1, characterized in that: The outer wall of the C-shaped carriage (32) is fixedly connected to a slide rail two (37), and the outer wall of the slide rail two (37) is slidably connected to a support slider (38).

3. The protective film fixed-length slitting machine according to claim 2, characterized in that: The inner wall of the support slider (38) is fixedly connected to a support rod (39), and the outer wall of the support rod (39) is rotatably connected to a force-bearing wheel (310).

4. The protective film fixed-length slitting machine according to claim 1, characterized in that: The cutting assembly (4) includes a fixing plate (41), a guide rod (42) is slidably connected to the inner wall of the fixing plate (41), a convex seat (43) is fixedly connected to the top of the guide rod (42), and a guide groove (44) is provided on the convex seat (43).

5. A fixed-length slitting machine for protective films according to claim 4, characterized in that: The inner wall of the guide groove (44) is slidably connected to a guide slider (45), the outer wall of the guide slider (45) is fixedly connected to an adjusting slider (46), the inner wall of the adjusting slider (46) is threadedly connected to an abutment screw (47), and the outer wall of the adjusting slider (46) is fixedly connected to a connecting rod (48).

6. A fixed-length slitting machine for protective films according to claim 5, characterized in that: The top of the convex seat (43) is fixedly connected to the mounting seat (49), the top of the mounting seat (49) is fixedly connected to the blade holder (410), and the inner wall of the blade holder (410) is detachably connected to the cutting blade (411).

7. A fixed-length slitting machine for protective films according to claim 1, characterized in that: A cutting platform (5) is fixedly connected to the outer wall of the frame (1), a guide roller (6) is fixedly connected to the top of the cutting platform (5), and an over roller (7) is rotatably connected to the inner wall of the frame (1).

8. A fixed-length slitting machine for protective films according to claim 1, characterized in that: The inner wall of the frame (1) is rotatably connected to the unwinding shaft (8), and the outer wall of the winding shaft (2) is fitted with a limiting sleeve (9).

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