A longitudinal hole cutting device for the edge of a sheet protective film

Abstract

The present invention discloses a longitudinal hole-cutting device for the edge of a sheet protective film, which relates to the technical field of sheet protective films. The present invention includes a film laminating machine and a protective film. Hole-cutting devices are symmetrically arranged on both sides of the film laminating machine; the protective film is arranged on the film laminating machine. A bracket is fixedly installed on the film laminating machine, and a follow-up fitting structure is installed on the bracket. A cutting mechanism is installed on the bearing mounting seat of the follow-up fitting structure. The present invention realizes that during the film laminating process, the hole-cutting position changes with the reduction of the thickness of the protective film through the follow-up fitting structure, and realizes the hole-cutting of the protective film through the cutting mechanism.

Description

Technical Field

[0001] The present invention belongs to the technical field of sheet protective films, and relates to a longitudinal hole cutting device for the edges of a sheet protective film. Background Art

[0002] Currently, in the sheet industry with protective films, when there is a need for caulking, puttying, plastering, etc. during the construction process of sheets, it is necessary to remove the protective film on the edges of the sheets to expose the sheets.

[0003] Traditional protective films are integrated. During the process of removing the protective film, if sharp objects such as utility knives are used to cut the film, it is very easy to scratch the sheets, resulting in the scrapping of the sheets and wasting resources. At the same time, re-purchasing sheets will also cause delays in the construction period, and even cause work stoppage, which also increases the production cost. Moreover, the efficiency of tearing off the protective film on the edges of the sheets is very low. Long-term tearing operations will make the hands and fingernails of the staff very painful, which makes the operation time-consuming and laborious, and workers are prone to discomfort during this operation. And the average length of the sheets is more than 3 meters. By tearing them off manually bit by bit, there are often more or less tears on the edges during long-distance operations, which is very uneven and affects the overall neatness. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art, the present invention provides a longitudinal hole cutting device for the edges of a sheet protective film, which realizes cutting holes on both sides of the protective film and facilitates tearing off the protective film on the sheet. The present invention is realized through the following technical solutions: The present invention provides a longitudinal hole cutting device for the edges of a sheet protective film.

[0005] Preferably, the follow-up fitting structure includes a three-axis cylinder fixedly installed on the bracket, the other end of the three-axis cylinder is connected to a connecting plate, bearing mounting seats are symmetrically installed on both sides of the connecting plate, and follow-up wheels are arranged in the middle of the bearing mounting seats.

[0006] Preferably, a shaft passes through the middle of the follow-up wheel, and the shaft is fixedly fitted with the follow-up wheel through a bearing installed on the bearing mounting seat.

[0007] Preferably, the follow-up wheel fits the protective film at the outer diameter of the protective film roller.

[0008] Preferably, the cutting mechanism includes a connecting bracket fixedly installed on the bearing mounting seat, a folding structure is arranged on the connecting bracket, a follow-up roller one is fixedly installed on one side of the folding structure fixed to the connecting bracket, and a follow-up roller two is fixedly installed on the other movable surface of the folding structure.

[0009] Preferably, the follow-up roller one and the follow-up roller two have the same specifications. The end of the follow-up roller one is connected to a blade through a non-powered roller, and the end of the follow-up roller two is connected to a rubber-coated bearing through a non-powered roller.

[0010] Preferably, the folding structure is provided with an elongated hole, and the follower roller is fixed to the elongated hole by bolts.

[0011] Preferably, the blade has a thickness of 0.8 mm, and has serrations evenly and discontinuously arranged around the blade.

[0012] Preferably, the bracket is a right-angle bracket, and the bracket is fixed to the laminating machine by bolts.

[0013] The beneficial effects of the present invention are:

[0014] The present invention provides a hole cutting device with simple structure, convenient operation and high cost performance, which can realize longitudinal cutting of holes on both sides of the protective film before the laminating machine coats the plate, so that discontinuous holes connected to each other are cut on both sides of the protective film covering the plate, similar to a dotted line, to form a tear strip.

[0015] When the edge protective film needs to be torn off during board construction, you only need to gently pull one end to easily peel off the tear strip on the edge of the protective film. The action is simple and does not require any tools. The fractures on both sides of the protective film are neat, which improves the overall aesthetics.

[0016] This invention greatly reduces the difficulty of work, improves the working comfort of workers, reduces the probability of scratching the board, greatly improves work efficiency and reduces construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 The three-dimensional Figure 1 .

[0019] Figure 2 The three-dimensional Figure 2 .

[0020] Figure 3 It is a schematic diagram of the follow-up sticker and structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the cutting mechanism of the present invention.

[0022] Figure 5 It is a partial enlarged schematic diagram of the present invention.

[0023] Figure 6 The three-dimensional Figure 3 .

[0024] In the figure, 1 is a laminating machine, 2 is a set screw, 3 is a mounting bracket, 4 is a follower wheel, 5 is a shaft, 6 is a bearing, 7 is a bearing mounting seat, 8 is a connecting plate, 9 is a three-axis cylinder, 10 is a connecting bracket, 11 is a blade, 12 is a folding structure, 13 is a second follower roller, 14 is a rubber-coated bearing, 15 is a protective film, 16 is a first follower roller, 17 is a long slot, 18 is a tear notch. Detailed implementation manners

[0025] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0026] The accompanying drawings are specific embodiments of a longitudinal hole-cutting device for the edge of a sheet protective film of the present invention. This embodiment includes a laminating machine and a protective film. Cutting devices are symmetrically arranged on both sides of the laminating machine; since the structure of the sheet is a 0.5-mm color steel plate on both sides with a core material added in the middle, scratches are not allowed on the surface of the sheet, and no dirt is allowed to remain on the surface of the sheet. This requires that the protective film be pre-punched before being attached to the color steel plate. Therefore, a cutting device is provided to cut the protective film before the laminating machine laminates the sheet onto the plate. As shown in the Figure 6 accompanying drawings, cutting devices are symmetrically arranged on both sides of the laminating machine.

[0027] The protective film 15 is arranged on the laminating machine 1. The mounting bracket 3 is fixedly installed on the laminating machine 1. The bracket is a right-angle bracket, and the bracket 3 is fixed to the laminating machine 1 through the bolt 2. A cutting mechanism is installed on the bearing mounting seat 7 of the follower fitting structure. Since the protective film is in a drum shape, the outer diameter of the unused protective film is between ∮310 mm and ∮160 mm, and as the protective film is used, its outer diameter gradually decreases until ∮86 mm. Therefore, a follower fitting structure is installed on the bracket 3.

[0028] The follower fitting structure includes a three-axis cylinder 9 fixedly installed on the bracket. The use of a three-axis cylinder here increases the stability of the force exerted by the cylinder on the connecting plate. The other end of the three-axis cylinder is connected to the connecting plate 8. Bearing mounting seats 7 are symmetrically installed on both sides of the connecting plate 8. A follower wheel is arranged in the middle of the bearing mounting seat 7; the shaft 5 passes through the middle of the follower wheel 4, and the shaft 5 is cooperated with the bearing 6 installed on the bearing mounting seat 7 to fix the follower wheel 4. The follower wheel 4 contacts the protective film at the outer diameter of the protective film roller. When the three-axis cylinder works, its piston rod pushes the connecting plate towards the protective film, and the follower wheel will advance forward in real time as the thickness of the protective film decreases, ensuring that the follower wheel always contacts the protective film and achieving consistent hole-cutting positions.

[0029] Since the protective film has a large elasticity and is not easily cut through, in view of this characteristic, a cutting mechanism for cutting holes in the protective film is designed and installed. This cutting mechanism realizes the hole-cutting form of the unpowered idler roller, avoids scratching the protective film, and effectively protects the overall structure of the protective film. In this embodiment, the cutting mechanism includes a connecting bracket 10 fixedly installed on the bearing mounting seat 7. The connecting bracket 10 is fixed to the bearing mounting seat by screws and the position of the connecting bracket can be adjusted according to the specific position of the protective film on site; as shown in the appendix Figure 4 As shown, a folding structure 12 is provided on the connecting bracket 10. The folding structure is a 180-degree self-locking folding hinge. The folding structure includes a fixed part and a folding part. The fixed part is installed on the connecting bracket, and the folding part is connected to the fixed part. Manually control the self-locking switch of the folding structure to realize the rotation of the folding part from 90 degrees to 180 degrees, and then hold the self-locking switch to fold the folding part back to its original state. And the folding structure will automatically lock at 90 degrees and 180 degrees. There is a long hole 17 on the fixed part of the folding structure 12 fixed to the connecting bracket. The first follower roller 16 is fixed to the long hole 17 by bolts, and the position of the first follower roller on the long hole can be adjusted according to the position of the protective film; the second follower roller 13 is fixedly installed on the other folding part of the folding structure 12. During the working process, the fixed part and the folding part of the folding structure are on the same horizontal line. When the protective film needs to be replaced, manually fold the folding part outwards by 90 degrees, and then turn the folding part back after the protective film is replaced. In this embodiment, the first follower roller 16 and the second follower roller 13 have the same specifications. The end of the first follower roller is movably connected to the blade 11. The blade is installed on the first follower roller through an unpowered roller. The thickness of the blade is 0.8 mm. The blade is evenly and intermittently serrated around, and can cut out intermittent holes similar to dotted lines; the end of the second follower roller is connected to the rubber-coated bearing 14 through an unpowered roller, realizing the simultaneous rolling of the blade and the rubber-coated bearing during the cutting process. After many experiments, the holes cut by the blade with a thickness of 0.8 mm have better effects, which can cut out appropriate holes in the protective film without damaging the protective film. During the hole-cutting process, the protective film 15 is always between the blade 11 and the rubber-coated bearing 14. The rubber-coated bearing is made of rubber material, which can effectively protect the protective film during the hole-cutting process, avoid the protective film from deforming due to excessive pressure, and affect the normal use of the subsequent processes.

[0030] In this embodiment, the hole-cutting position is 5 cm from both sides of the plate of the protective film, and intermittent holes that are cut one after another are cut out, similar to dotted lines, to form a tear strip. In the actual application process, the installation position of the bracket on the laminator can be adjusted according to the width of the tear strip.

[0031] During use, place the protective film 15 at the relevant position of the laminating machine, and let the folding structure extend from the folded position, so that the folded part and the fixed part are on the same horizontal line, and the protective film is located between the blade and the rubber-coated bearing; ventilate the three-axis cylinder 9, the push rod of the three-axis cylinder extends, pushing the connecting plate forward, and then the connecting plate drives the follower wheel 4 to move forward, and makes the follower wheel 4 always fit the protective film at the outer diameter of the protective film roller; through the power provided by the three-axis cylinder, the displacement of the follower wheel is consistent with the reduction of the protective film, achieving the purpose that the follower wheel is always tangent to the protective film, and at the same time ensuring that the cutting depth of the blade 11 on the protective film is relatively consistent. While the three-axis cylinder pushes the connecting plate, it also keeps the cutting mechanism fixed on the bearing mounting seat in a relative position with the protective film, and drives the blade to roll as the protective film moves, completing the hole cutting.

[0032] The protective film after hole cutting is laminated on the board through the laminating machine, and during construction, the staff only needs to tear off the easy-to-tear strips on both sides of the protective film along the cutting line, which greatly improves the work efficiency.

[0033] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A longitudinal hole cutting device for the edge of a sheet protective film, comprising a film laminating machine (1) and a protective film (15), characterized in that: Hole cutting devices are symmetrically arranged on both sides of a laminating machine (1); a protective film (15) is arranged on the laminating machine (1), a fixing bracket (3) is fixedly installed on the laminating machine (1), a follow-up fitting structure is installed on the bracket (3), and a cutting mechanism is installed on a bearing mounting seat (7) of the follow-up fitting structure; The cutting mechanism includes a connecting bracket (10) fixedly installed on the bearing mounting seat (7), a folding structure (12) is arranged on the connecting bracket, a follow-up roller one (16) is fixedly installed on one side of the folding structure (12) fixed to the connecting bracket (10), and a follow-up roller two (13) is fixedly installed on the other movable surface of the folding structure; The follow-up roller one (16) and the follow-up roller two (13) have the same specifications. The end of the follow-up roller one is connected to a blade (11) through a non-powered roller one, and the end of the follow-up roller two is connected to a rubber-coated bearing (14) through a non-powered roller two; The folding structure is a 180-degree self-locking folding hinge. The folding structure includes a fixed part and a folding part. The fixed part is installed on the connecting bracket, and the folding part is connected to the fixed part. Manually control the self-locking switch of the folding structure to rotate the folding part from 90 degrees to 180 degrees, and then hold down the self-locking switch to fold the folding part back to its original state. Moreover, the folding structure will automatically lock at 90 degrees and 180 degrees. There are long slots on the fixed part of the folding structure fixed to the connecting bracket, and the follow-up roller one is fixed on the long slots through bolts. Adjust the position of the follow-up roller one on the long slots according to the position of the protective film; the follow-up roller two is fixedly installed on the other folding part of the folding structure.

2. The longitudinal hole-cutting device for the edge of the sheet protective film according to claim 1, wherein: The follow-up fitting structure includes a three-axis cylinder (9) fixedly installed on the bracket (3), the other end of the three-axis cylinder (9) is connected to a connecting plate (8), bearing mounting seats (7) are symmetrically installed on both sides of the connecting plate (8), and a follow-up wheel (4) is arranged in the middle of the bearing mounting seats (7).

3. The longitudinal hole cutting device for the edge of the sheet protective film according to claim 2, wherein: A shaft (5) passes through the middle of the follow-up wheel (4), and the shaft is cooperatively fixed with a bearing (6) installed on the bearing mounting seat to fix the follow-up wheel (5).

4. The longitudinal hole cutting device for the edge of the sheet protective film according to claim 1, wherein: The follow-up wheel (4) fits the protective film (15) at the outer diameter of the protective film roller.

5. The longitudinal hole cutting device for the edge of the sheet protective film according to claim 1, wherein: The folding structure (12) is provided with long slots (17), and the follow-up roller one (16) is fixed on the long slots through bolts.

6. The longitudinal hole cutting device for the edge of the sheet protective film according to claim 1, characterized in that: The thickness of the blade (11) is 0.8 mm, and the circumference of the blade (11) is provided with evenly spaced serrations.

7. The longitudinal hole cutting device for the edge of the sheet protective film according to claim 1, wherein: The bracket (3) is a right-angle bracket, and the bracket (3) is fixed to the laminating machine (1) through bolts (2).

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