Film covering device capable of automatically cutting off

Abstract

The utility model provides a film covering device capable of automatically cutting off. The film covering device comprises a mounting shaft, a film pasting main plate, a lifting driving air cylinder, a first film covering roller, a second film covering roller, a film cutting blade and a limiting assembly, during film covering, the lifting driving air cylinder drives the film pasting main plate to descend, the bottom ends of the first film covering roller and the second film covering roller make contact with the top end face of a disc-shaped packaging belt below, a packaging film is conveyed to the surface of the packaging belt through the first film covering roller and the second film covering roller to be wound, and after the number of film covering turns is reached, the lifting driving air cylinder drives the film pasting main plate to ascend; at the moment, the first film covering roller synchronously ascends along with the film pasting main plate, the second film covering roller freely falls downwards along the film pasting main plate in the direction parallel to the cutting direction of the film cutting blade due to the fact that the second film covering roller loses the support of the bottom disc-shaped packaging belt, and the packaging film is automatically cut off through the film cutting blade installed on the front side of the second film covering roller; due to the fact that the packaging film is cut off through the film cutting blade and the gravity of the second film covering roller, the cutting-off work is more stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of film-covering packaging equipment, in particular to a film-covering device capable of automatically cutting off. Background Art

[0002] With the rapid development of packaging and logistics, more and more products are transported and circulated by packaging. During the transportation and turnover of products, they need to be tied and fixed with the help of strapping tape. When strapping, the products are usually packaged with the help of automatic strapping machines, so the quality requirements of the strapping tape reel are high. Therefore, the surface of the strapping tape reel is covered with a protective film to prevent the strapping tape from falling off the reel during transportation.

[0003] The outer surface of the disc-shaped strapping tape is covered with a protective film through a laminating device. For example, the applicant previously applied for an authorization announcement number CN218751714U and the authorization announcement date March 28, 2023. The patent name is "A laminating device for an automatic strapping tape winder". When the laminating device needs to cut the film after the laminating is completed, the laminating roller presses one end of the packaging film onto the strapping tape, and the other end is clamped and pulled upward by two sets of clamping rollers, so that the packaging film contacts and cuts off the toothed cutter, thereby completing the laminating cutting operation.

[0004] The above technical solution mainly has the following defects: 1. The toothed cutter needs to be driven by a separate second cylinder to extend downward to cut the packaging film. Since the cylinder is needed as a power source, the stability of the cutting effect of the packaging film is affected by the stability of the cylinder when it is used; 2. It needs to rely on two sets of film clamping rollers and a separate second cylinder, its structure is relatively complex, and the manufacturing cost is relatively high. Utility Model Content

[0005] In view of the defects existing in the prior art, the purpose of the utility model is to provide a laminating device that can cut automatically, so as to solve the problem that the existing laminating device needs to rely on an additional cylinder to drive when cutting the packaging film, and the film cutting stability is affected by the stability of the cylinder.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] The present application provides a film laminating device that can be cut automatically, the film laminating device comprising an installation shaft for installing a packaging film, the film laminating device also comprising a film laminating main board, a lifting drive cylinder, a first film laminating roller, a second film laminating roller, a film cutting blade and a limiting assembly, the lifting drive cylinder is fixedly connected to the film laminating main board and is used to drive the film laminating main board to lift and move, the first film laminating roller is rotatably installed on the film laminating main board at a position on one side of the installation shaft, the second film laminating roller is rotatably installed on the film laminating main board at a position on the other side of the installation shaft away from the installation shaft, the film cutting blade is fixedly installed on the second film laminating roller at a side of the installation shaft, the second film laminating roller forms a sliding connection with the film laminating main board parallel to the cutting direction of the film cutting blade, and the limiting assembly cooperates with the second film laminating roller to limit the free sliding distance of the second film laminating roller along the film laminating main board.

[0008] Furthermore, the coating device also includes an elastic reset component, which cooperates with the limiting component to control the automatic reset of the limiting component.

[0009] Furthermore, the second film laminating roller is slidably mounted on the film laminating main board through a provided slide rail in parallel to the cutting direction of the film cutting blade.

[0010] Furthermore, a film pressing screw is arranged above the second coating roller, one end of the film pressing screw is fixedly mounted on the slide rail, and the other end of the film pressing screw is fixedly connected to the second coating roller via a connecting piece. The limiting assembly is a film cutting limiting plate, one end of the film cutting limiting plate is rotatably hingedly mounted on the slide rail, and the other end of the film cutting limiting plate is formed with a slide groove, one end of the film pressing screw passes through the slide groove and is fixedly mounted on the slide rail, and the film pressing screw forms a sliding connection with the slide groove.

[0011] Furthermore, the elastic reset component is a spring, one end of the spring is fixedly mounted on the film sticking main board, and the other end of the spring is fixedly mounted on the film cutting limit plate.

[0012] The beneficial effects of the utility model are:

[0013] The first laminating roller and the second laminating roller are installed on the film laminating main board, and the first laminating roller and the second laminating roller are arranged in sequence along the conveying direction of the packaging film, and at the same time, the second laminating roller and the film laminating main board form a sliding connection parallel to the cutting direction of the film cutting blade. In this way, during laminating, the lifting drive cylinder drives the film laminating main board to descend, so that the bottom ends of the first laminating roller and the second laminating roller are in contact with the top end surface of the disc-shaped packaging tape below, and the packaging film is conveyed to the surface of the packaging tape by the first laminating roller and the second laminating roller for winding. After the number of laminating turns is reached, the lifting drive cylinder drives the film laminating main board to rise. At this time, the first laminating roller rises synchronously with the film laminating main board, and the second laminating roller, due to the loss of support from the bottom disc-shaped packaging tape, freely falls downward along the film laminating main board in parallel to the cutting direction of the film cutting blade, so that the packaging film below is automatically cut off by the film cutting blade installed on the front side of the second laminating roller. Since the cutting of the packaging film relies on the film cutting blade and the gravity of the second laminating roller itself, its cutting work is more stable and reliable; in addition, the whole structure is simpler and the manufacturing cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the laminating device that can be automatically cut off according to an embodiment of the present application.

[0015] Figure 2 This is a schematic diagram of the structure of the laminating device that can automatically cut off according to an embodiment of the present application in the main viewing direction.

[0016] Figure 3 for Figure 1 Schematic diagram of the local enlarged structure at A in the figure.

[0017] Figure 4 This is a schematic diagram of the structural state of cutting the packaging film in an embodiment of the present application.

[0018] In the figure:

[0019] 100- laminating device, 1- mounting shaft, 2- first laminating roller, 3- second laminating roller, 4- film pressing screw, 5- film laminating main board, 6- lifting drive cylinder, 7- film cutting blade, 8- film cutting limit plate, 9- slide rail, 10- guide rail, 200- packaging film. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] See attached Figure 1 To Attachment Figure 2 As shown, this embodiment provides a laminating device 100 that can cut automatically, which includes an installation shaft 1 for installing a packaging film, a film pasting main board 5, a lifting drive cylinder 6, a first laminating roller 2, a second laminating roller 3, a film cutting blade 7 and a limiting component.

[0022] The film main board 5 is vertically slidably installed on the strapping winder through a pair of mutually cooperating sliders and guide rails 10 arranged on its back side. The piston rod of the lifting drive cylinder 6 is connected to the film main board 5, which is used to drive the film main board 5 to move vertically up and down relative to the strapping winder.

[0023] The mounting shaft 1 is fixedly mounted on one side of the left side of the film main board 5, and the packaging film is rotatably mounted on the mounting shaft 1. The first laminating roller 2 is rotatably mounted on the film main board 5 at one side of the mounting shaft 1, and the second laminating roller 3 is rotatably mounted on the film main board 5 at the other side away from the mounting shaft 1, and the film cutting blade 7 is fixedly mounted on one side of the second laminating roller 3 near the mounting shaft 1, that is, the first laminating roller 2 and the second laminating roller 3 are arranged in sequence along the conveying direction of the packaging film.

[0024] Continue to refer to the attached Figure 1 and attached Figure 2 As shown, the second coating roller 3 is slidably mounted on the film laminating main board 5 via a slide rail 9 parallel to the cutting direction of the film cutting blade 7, one end of the second coating roller 3 is rotatably mounted on the slide rail 9, and the other end of the second coating roller 3 extends outward horizontally.

[0025] In order to limit the sliding position of the second laminating roller 3 when it slides along the slide rail 9 relative to the film laminating mainboard 5, the second laminating roller 3 cooperates with a limiting component to limit the sliding position of the second laminating roller 3 by the limiting component.

[0026] See attached Figure 1 To Attachment Figure 3 As shown, in the present embodiment, a film pressing screw 4 is arranged above the second coating roller 3, one end of the film pressing screw 4 is fixedly mounted on the slide rail 9, and the other end of the film pressing screw 4 is fixedly connected to the second coating roller 3 via a connecting plate. The limiting component is a film cutting limiting plate 8, one end of the film cutting limiting plate 8 is rotatably hingedly mounted on the slide rail 9, and the other end of the film cutting limiting plate 8 is formed with a slide groove, one end of the film pressing screw 4 passes through the slide groove and is fixedly mounted on the slide rail 9, and the film pressing screw 4 forms a sliding connection with the slide groove.

[0027] In addition, in order to enable the second coating roller 3 to automatically reset after sliding downward along the slide rail 9, an elastic reset component is installed between the film cutting limit plate 8 and the film pasting main board 5. Specifically, the elastic reset component is a spring, one end of the spring is fixedly mounted on the film pasting main board 5, and the other end of the spring is fixedly mounted on the film cutting limit plate 8.

[0028] See attached Figure 4 As shown, in order to better understand the laminating device that can automatically cut off in this embodiment, the working principle thereof is briefly described below:

[0029] During lamination, the lifting drive cylinder 6 drives the film laminating main board 5 to descend, so that the bottom ends of the first laminating roller 2 and the second laminating roller 3 are in contact with the top end surface of the disc-shaped packing tape below. Since the bottom end of the second laminating roller 3 is supported by the disc-shaped packing tape below, the second laminating roller 3 will not slide down along the slide rail 9, and the film cutting blade 7 will not contact the packaging film. The packaging film 200 is transported to the surface of the packaging tape by the first coating roller 2 and the second coating roller 3 for winding. After the number of coating turns is reached, the lifting drive cylinder 6 drives the film main board 5 to rise. At this time, the first coating roller 2 rises synchronously with the film main board 5, and the second coating roller 3 loses the support of the bottom disc-shaped packaging tape, so it falls freely downward along the film main board 5 in a direction parallel to the cutting direction of the film cutting blade 7, thereby automatically cutting the packaging film 200 below with the help of the film cutting blade 7 installed on the front side of the second coating roller 3. Since the cutting of the packaging film 200 relies on the gravity of the film cutting blade 7 and the second coating roller 3 itself, its cutting work is more stable and reliable; in addition, since the cutting of the packaging film in this scheme relies on the dead weight of the film cutting blade 7 to cut, there is no need to set up an additional driving cylinder separately, and there is no need to set a film clamping roller to clamp the packaging film during the cutting process, so the whole structure is simpler and the manufacturing cost is lower.

[0030] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A laminating device capable of automatically cutting off, the laminating device comprising a mounting shaft for mounting a packaging film, characterized in that: The film laminating device also includes a film laminating main board, a lifting drive cylinder, a first film laminating roller, a second film laminating roller, a film cutting blade and a limiting assembly. The lifting drive cylinder is fixedly connected to the film laminating main board and is used to drive the film laminating main board to lift and move. The first film laminating roller is rotatably installed on the film laminating main board at a position on one side adjacent to the mounting axis, and the second film laminating roller is rotatably installed on the film laminating main board at a position on the other side away from the mounting axis. The film cutting blade is fixedly installed on the second film laminating roller at a side adjacent to the mounting axis. The second film laminating roller forms a sliding connection with the film laminating main board parallel to the cutting direction of the film cutting blade. The limiting assembly cooperates with the second film laminating roller to limit the free sliding distance of the second film laminating roller along the film laminating main board.

2. The film-coating device capable of automatic cutting off according to claim 1, characterized in that: The coating device further comprises an elastic reset component, and the elastic reset component cooperates with the limit component to control the limit component to automatically reset.

3. The film-coating device capable of automatic cutting off according to claim 2, characterized in that: The second film laminating roller is slidably mounted on the film laminating main board through a slide rail in parallel to the cutting direction of the film cutting blade.

4. The film-coating device capable of automatic cutting off according to claim 3, characterized in that: A film pressing screw is arranged above the second coating roller, one end of the film pressing screw is fixedly mounted on the slide rail, and the other end of the film pressing screw is fixedly connected to the second coating roller via a connecting piece. The limiting assembly is a film cutting limiting plate, one end of the film cutting limiting plate is rotatably hingedly mounted on the slide rail, and the other end of the film cutting limiting plate is formed with a slide groove, one end of the film pressing screw passes through the slide groove and is fixedly mounted on the slide rail, and the film pressing screw forms a sliding connection with the slide groove.

5. The film-coating device capable of automatic cutting off according to claim 4, characterized in that: The elastic reset component is a spring, one end of which is fixedly mounted on the film sticking main board, and the other end of which is fixedly mounted on the film cutting limit plate.

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