A tearable device for printed film test articles

Abstract

The application relates to a kind of easy-to-tear devices for printing film test objects, and to the field of printing film production equipment, comprising an upper roller and a lower roller, the upper roller and the lower roller are arranged in parallel, a sandpaper layer is arranged on the upper roller, the sandpaper layer is formed into a circular ring structure using sandpaper and bending, and the sandpaper layer is sleeved on the upper roller.The application has the effect of setting an easy-to-tear area on the printing film and making the tear opening neat.

Description

Technical Field

[0001] This application relates to the field of printing film production equipment, and in particular to an easy-tear device for inspecting printed film samples. Background Technology

[0002] Printing film is a processing technique that involves covering the surface of paper products with a transparent plastic film, primarily used to enhance the gloss, abrasion resistance, and folding resistance of printed materials. During the production of printing film, performance testing is frequently required, necessitating the tearing or cutting of portions from the printing film to facilitate performance checks by production personnel.

[0003] Existing printed films typically have easy-tear areas formed by using films of different materials. By covering paper products with a film, the film is positioned in the middle with poor tear resistance. The films of different materials are then heat-sealed together and covered on the paper products. Users can tear off the samples through the easy-tear areas for inspection.

[0004] The aforementioned technical solutions have the following defects: after the printing film is produced, the film in the easy-tear area is easily affected by processes such as heat sealing, which makes the film still have good tensile strength, resulting in uneven tear when the product is torn off for inspection. Utility Model Content

[0005] In order to set an easy-tear area on the printed film and make the tear neat, this application provides an easy-tear device for printing film inspection.

[0006] The easy-tear device for inspecting printed film provided in this application adopts the following technical solution: An easy-tear device for inspecting printed film includes an upper roller and a lower roller, which are arranged in parallel. A sandpaper layer is provided on the upper roller. The sandpaper layer is made of sandpaper and bent into a circular structure. The sandpaper layer is sleeved on the upper roller.

[0007] By adopting the above technical solution, a sandpaper layer is set on the upper roller, protruding from the surface of the upper roller, so that the sandpaper is bonded and fixed to the upper roller. When the film is laid flat and passes between the upper roller and the lower roller, the upper roller and the lower roller play a conveying role. When the upper roller rotates, the rotational linear velocity of the sandpaper layer is higher than the linear velocity of the smooth surface of the upper roller, so that the sandpaper layer can contact the film and generate friction. The contact area between the film and the sandpaper layer generates tearing force and destroys the film structure, making the film in the easy-to-tear area easy to tear and making the tear flat.

[0008] Optionally, the lower roller is rotatably connected to fixed shaft seats at both ends, and the fixed shaft seats are fixed on the frame. The upper roller is provided with displacement mechanisms at both ends, which are installed on the frame and are used to drive the upper roller to reciprocate along a straight direction.

[0009] By adopting the above technical solution, the lower roller is rotatably connected to the fixed shaft seat, and the upper roller is connected to the displacement mechanism. The user can drive the upper roller to move back and forth in a straight line through the displacement mechanism, thereby achieving the effect of adjusting the gap between the upper and lower rollers. The sandpaper layer on the upper roller can be moved by the displacement mechanism and pressed onto the film, thereby improving the effect of the sandpaper layer in grinding an easy-to-tear area on the film.

[0010] Optionally, the displacement mechanism includes a cylinder and a connecting shaft seat. One end of the cylinder is connected to the frame, and the other end is connected to the connecting shaft seat. The connecting shaft seat is rotatably connected to the end of the upper roller.

[0011] By adopting the above technical solution, a cylinder is installed on the connecting shaft seat and mounted on the frame. When the cylinder extends or retracts, it drives the upper roller to move back and forth in a straight line, thereby adjusting the distance between the upper roller and the lower roller.

[0012] Optionally, the sandpaper layer is made of 320-grit sandpaper.

[0013] By adopting the above technical solution, using 320-grit sandpaper, the sandpaper can achieve the best destructive effect on the film surface. After being rubbed by the sandpaper, the film can maintain its structural shape, thus ensuring that the inspection sample remains attached to the printing film.

[0014] Optionally, a support ring is provided on the upper roller. The support ring has a circular structure and is sleeved on the upper roller. The sandpaper layer is adhered to the support ring.

[0015] By adopting the above technical solution, a support ring is set on the upper roller, and the user can adjust the position of the sandpaper layer on the upper roller by sliding the support ring on the upper roller, so that the sandpaper layer can press out easy-tear areas at different positions on the printing film.

[0016] Optionally, a plurality of balls are embedded in and rolled on the inner wall of the support ring, and the balls are equidistantly spaced along the circumference of the support ring.

[0017] By adopting the above technical solution, by setting balls on the inner wall of the support ring, the balls can roll on the support ring. When the support ring is sleeved on the upper roller, the balls abut against the outer wall of the upper roller and rotate, thereby reducing the friction between the support ring and the upper roller, allowing the support ring to slide on the upper roller, making the surface of the upper roller smooth and convenient for subsequent use.

[0018] Optionally, the balls are configured in two rows, with the two rows of balls arranged axially along the support ring.

[0019] By adopting the above technical solution, and by setting two rows of balls, the two rows of balls can jointly support the support ring, thereby enabling the support ring to be stably and coaxially set on the upper roller, reducing the probability of the support ring swaying on the upper roller.

[0020] Optionally, structural adhesive is provided between the support ring and the upper roller to fill the gap between the upper roller and the support ring.

[0021] By adopting the above technical solution, structural adhesive is applied between the support ring and the upper roller to bond and fix the support ring. After the structural adhesive solidifies, it plays a supporting role for the support ring, which can reduce the probability of deformation of the support ring after the paper is pressed by the roller.

[0022] In summary, the beneficial technical effects of this application are as follows: 1. By setting a sandpaper layer on the upper roller, the sandpaper layer protrudes from the surface of the upper roller, so that the sandpaper is bonded and fixed to the upper roller. When the film is laid flat and passes between the upper roller and the lower roller, the upper roller and the lower roller play a conveying role. When the upper roller rotates, the rotational linear velocity of the sandpaper layer is higher than the linear velocity of the smooth surface of the upper roller, so that the sandpaper layer can contact the film and generate friction. The contact area between the film and the sandpaper layer generates tearing force and destroys the film structure, making the film in the easy-tear area easy to tear and making the tear flat. 2. By rotating the lower roller to the fixed shaft seat and connecting the upper roller to the displacement mechanism, the user can drive the upper roller to move back and forth in a straight line through the displacement mechanism, thereby adjusting the gap between the upper and lower rollers. The sandpaper layer on the upper roller can be moved and pressed onto the film through the displacement mechanism, thereby improving the effect of the sandpaper layer in creating an easy-to-tear area on the film. 3. By setting a support ring on the upper roller, the user can adjust the position of the sandpaper layer on the upper roller by sliding the support ring on the upper roller, so that the sandpaper layer can press out easy-tear areas at different positions on the printed film. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is a cross-sectional view of the upper roller according to an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the support ring structure according to an embodiment of this application.

[0026] Reference numerals in the attached diagram: 1. Upper roller; 11. Connecting shaft; 2. Sandpaper layer; 3. Lower roller; 4. Support ring; 41. Ball bearing; 5. Structural adhesive; 6. Fixed shaft seat; 7. Displacement mechanism; 71. Cylinder; 72. Connecting shaft seat. Detailed Implementation

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] This application discloses an easy-tear device for inspecting printed film samples, referring to... Figure 1The device includes an upper roller 1, a sandpaper layer 2, and a lower roller 3. The upper roller 1 and the lower roller 3 are arranged in parallel with a gap between them. The sandpaper layer 2 is bonded and fixed to the upper roller 1. The sandpaper layer 2 is formed by wrapping sandpaper around the upper roller 1 and bonding it to the upper roller 1 to form a ring structure. When the film is laid flat and inserted between the upper roller 1 and the lower roller 3, the sandpaper layer 2 contacts the film and forms an easy-tear area on the film surface. The tensile strength of the easy-tear area decreases, and the user can tear the film along the easy-tear area.

[0029] Reference Figure 1 The sandpaper layer 2 can be made of 320-grit sandpaper. When the sandpaper is attached to the upper roller 1, the surface of the sandpaper layer 2 protrudes from the upper roller 1. When the film is conveyed between the upper roller 1 and the lower roller 3, the sandpaper comes into contact with the film through friction. The sandpaper layer 2 can thin the film, thereby reducing the structural strength of the tearable area and keeping the film on both sides of the tearable area intact.

[0030] Reference Figure 1 The lower roller 3 has fixed bearing seats 6 at both ends, which are mounted on the frame. The upper roller 1 has connecting shafts 11 coaxially at both ends, and each connecting shaft 11 is equipped with a displacement mechanism 7. The displacement mechanism 7 is used to drive the upper roller 1 to move back and forth in a straight line, thereby adjusting the gap between the upper roller 1 and the lower roller 3.

[0031] Reference Figure 1 The displacement mechanism 7 includes a cylinder 71 and a connecting shaft seat 72. The connecting shaft seat 72 is rotatably connected to the connecting shaft 11. One end of the cylinder 71 is fixed on the frame, and the other end is connected to the connecting shaft seat 72. The user can control the gap between the upper roller 1 and the lower roller 3 by controlling the extension and retraction of the connecting shaft seat 72.

[0032] Reference Figure 2 and Figure 3 A support ring 4 is detachably connected to the upper roller 1. The support ring 4 is a cylindrical structure and is sleeved on the upper roller 1. The sandpaper layer 2 is fixed to the outer surface of the support ring 4 by adhesive. By sliding the support ring 4 to different positions on the upper roller 1, the user can make different positions of the film contact the sandpaper layer 2, thereby making different positions on the film able to be scratched into easy-tear areas.

[0033] Reference Figure 3 Multiple balls 41 are rotatably connected to the inner wall of the support ring 4. The balls 41 are embedded in the support ring 4 and roll on the support ring 4. When the support ring 4 is fitted onto the upper roller 1, the multiple balls 41 abut against the upper roller 1. When the user slides the support ring 4, the balls 41 roll on the upper roller 1, thereby reducing the friction between the support ring 4 and the upper roller 1 and keeping the surface of the upper roller 1 smooth.

[0034] Reference Figure 3The support ring 4 is provided with two rows of balls 41. The two rows of balls 41 are equally spaced along the circumference of the support ring 4. When the support ring 4 is sleeved on the upper roller 1, the two rows of balls 41 support the support ring 4 together, so that the support ring 4 is kept in a coaxial position with the upper roller 1.

[0035] Reference Figure 2 A structural adhesive 5 is provided between the support ring 4 and the upper roller 1. The structural adhesive 5 can be made of epoxy resin. The epoxy resin fills the gap between the upper roller 1 and the support ring 4. The epoxy resin can bond the support ring 4 to the upper roller 1. By breaking the structural adhesive 5, the user can remove the support ring 4 from the upper roller 1, thus facilitating the use of the upper roller 1 for other processes.

[0036] The implementation principle of this application embodiment is as follows: by setting a sandpaper layer 2 on the upper roller 1, when the film passes between the upper roller 1 and the lower roller 3, the sandpaper layer 2 can rub the surface of the film, thereby reducing the structural strength of the tearable area. When the film is used to make packaging bags, the tearable area is easy to tear. By setting displacement mechanisms 7 on both sides of the upper roller 1, the user can control the movement of the upper roller 1 through the cylinder 71, thereby enabling the upper roller 1 to apply pressure to the film and increase the degree of friction between the sandpaper layer 2 and the film.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An easy-tear device for inspecting printed film samples, characterized in that: It includes an upper roller (1) and a lower roller (3), which are arranged in parallel. A sandpaper layer (2) is provided on the upper roller (1). The sandpaper layer (2) is made of sandpaper and bent to form a circular structure. The sandpaper layer (2) is fitted on the upper roller (1).

2. The easy-tear device for inspecting printed film according to claim 1, characterized in that: The lower roller (3) is rotatably connected to a fixed shaft seat (6) at both ends. The fixed shaft seat (6) is fixed on the frame. The upper roller (1) is provided with a displacement mechanism (7) at both ends. The displacement mechanism (7) is installed on the frame and is used to drive the upper roller (1) to move back and forth in a straight line.

3. The easy-tear device for inspecting printed film according to claim 2, characterized in that: The displacement mechanism (7) includes a cylinder (71) and a connecting shaft seat (72). One end of the cylinder (71) is connected to the frame, and the other end is connected to the connecting shaft seat (72). The connecting shaft seat (72) is rotatably connected to the end of the upper roller (1).

4. The easy-tear device for inspecting printed film according to claim 1, characterized in that: The sandpaper layer (2) is made of 320-grit sandpaper.

5. The easy-tear device for inspecting printed film according to claim 1, characterized in that: The upper roller (1) is provided with a support ring (4), which is a circular ring structure. The support ring (4) is sleeved on the upper roller (1), and the sandpaper layer (2) is bonded to the support ring (4).

6. The easy-tear device for inspecting printed film according to claim 5, characterized in that: Multiple balls (41) are embedded and rolled on the inner wall of the support ring (4), and the balls (41) are equidistantly spaced along the circumference of the support ring (4).

7. The easy-tear device for inspecting printed film according to claim 6, characterized in that: The ball bearings (41) are arranged in two rows, with the two rows of ball bearings (41) arranged axially along the support ring (4).

8. The easy-tear device for inspecting printed film according to claim 7, characterized in that: Structural adhesive (5) is provided between the support ring (4) and the upper roller (1), and the structural adhesive (5) is used to fill the gap between the upper roller (1) and the support ring (4).

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