Tension swing guide roller device for stretching film

Abstract

The utility model discloses a tension swing guide roller device for stretching a film, and belongs to the technical field of film processing. Comprising two corresponding fixed wallboards, a plurality of corresponding film guide rollers are rotationally arranged between the two fixed wallboards, a rotating shaft is rotationally arranged between the two fixed wallboards, two corresponding swing plates are arranged on the two sides of the rotating shaft, tension swing guide rollers corresponding to the film guide rollers are rotationally arranged between the two swing plates, and air cylinders are hinged to the fixed wallboards; the output end of the cylinder is hinged to the swing plate. According to the device, the tension swing guide roller which can swing back and forth according to the magnitude relation of film tension and cylinder thrust is designed, the defect that a traditional guide roller cannot move and be adjusted is overcome, when the film inlet and outlet speeds are different, the tension swing guide roller can be automatically adjusted, a film path is evenly stressed among the guide rollers, and the film path is more uniform. And the thin film is always in a proper tensioning state, so that the problems of breakage or wrinkling and the like caused by too large or too small stress on the thin film are effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of film processing, and specifically relates to a tension swing guide roller device for a stretch film. BACKGROUND

[0002] In a film production line, in order to avoid the problems of film path breakage, film tightness and edge wrinkling, the movement speed of the film path should be the same between devices. However, in actual processing, due to the selection of motor reducers between devices or device debugging, the actual speed of the film path between devices is slightly different. The traditional film conveying method is fixed guide roller, and the position of each guide roller cannot be adjusted after being fixed. Once the film speed changes, the film tension exceeds the allowable value, leading to film path breakage, or the film cannot be tightened, leading to the risk of film path edge wrinkling.

[0003] Therefore, the tension swing guide roller device is designed and developed, the guide roller is swung through the size relationship between the film path tension and the cylinder thrust, the film path speed is balanced, and the risk of film path breakage or edge wrinkling caused by speed difference when the film is in or out is effectively solved. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a tension swing guide roller device for a stretch film to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A tension swing guide roller device for a stretch film, comprising two corresponding fixed wall plates, a plurality of corresponding film guide rollers rotatably arranged between the two fixed wall plates, a rotating shaft rotatably arranged between the two fixed wall plates, two corresponding swing plates arranged on both sides of the rotating shaft, a tension swing guide roller corresponding to the film guide roller rotatably arranged between the two swing plates, a cylinder hingedly connected to the fixed wall plate, and the output end of the cylinder being hingedly connected to the swing plate.

[0007] As a further preferred embodiment of the utility model, a buffer is arranged on the fixed wall plate and located on both sides of the swing plate, so as to avoid the swing plate from swinging too much.

[0008] Compared with the prior art, the utility model has the following advantages:

[0009] The tension swing guide roller device is scientific and reasonable in design, and the tension swing guide roller can swing back and forth according to the relationship between the film tension and the size of the cylinder thrust force, the disadvantage that the traditional guide roller cannot move and adjust is changed, when the film in and out speed is different, the tension swing guide roller can automatically adjust, the film path is balanced among the guide rollers, and is always in a suitable tension state, and problems, such as film rupture or wrinkling caused by too large or too small stress, are effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a schematic diagram of a three-dimensional structure of the tension swing guide roller device for the stretch film of the utility model;

[0011] Figure 2 It is Figure 1 It is a structure enlarged schematic view of the middle cylinder;

[0012] Figure 3 It is a schematic diagram of actual application state of the tension swing guide roller device for the stretch film of the utility model;

[0013] Figure 4 It is a schematic diagram of film path trend of the tension swing guide roller device for the stretch film of the utility model.

[0014] In the drawing: 1, fixed wallboard; 2, film guide roller; 3, tension swing guide roller; 4, swing plate; 5, cylinder; 6, rotating shaft; 7, film in roller; 8, mounting seat; 9, buffer; 10, film path. DETAILED DESCRIPTION

[0015] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model. Embodiment 1

[0016] Please refer to Figures 1-4The embodiment provides a tension swing guide roller device for stretching a film, which comprises two corresponding fixed wall plates 1, a plurality of corresponding film guide rollers 2 rotatably arranged between the two fixed wall plates 1, a rotating shaft 6 rotatably arranged between the two fixed wall plates 1, two corresponding swing plates 4 arranged on the two sides of the rotating shaft 6, a tension swing guide roller 3 corresponding to the film guide roller 2 rotatably arranged between the two swing plates 4, a cylinder 5 hinged on the fixed wall plate 1, preferably a low-friction cylinder, and an output end of the cylinder 5 being hinged with the swing plate 4. In order to avoid that the swing plate 4 swings too much, a buffer 9 is arranged on the fixed wall plate 1 and located on the two sides of the swing plate 4, the buffer 9 is a mature technology, and an oil pressure buffer is preferably adopted. It should be noted that the installation of the buffer 9 is a routine setting familiar to those skilled in the art, and a mounting seat 8 is preferably arranged on the fixed wall plate 1 to realize the installation of the buffer 9, which is a routine operation and will not be described in detail.

[0017] In actual application, as shown in Figure 3 and Figure 4 , as a routine design, a corresponding film inlet roller 7 is arranged on one side for guiding the film, after the film is guided in, the film path direction of the film path 10 is as shown in Figure 4 , the direction of the film on the tension swing guide roller 3 is opposite to the overall film path direction and the pushing direction of the cylinder 5, when the film inlet speed is different from the film outlet speed, the film tension changes, the tension swing guide roller 3 swings to the corresponding side according to the film tension and the cylinder pushing force, and then adjusts the tension degree of the film, so that the film is always in a suitable tension state.

[0018] It should be noted that the above embodiment is only used for specifically and clearly describing the technical scheme and technical features of the application. For those skilled in the art, the scheme or features belonging to the prior art or common knowledge are not described in detail in the above embodiment.

[0019] In addition, the technical scheme of the application is not limited to the above embodiment, those skilled in the art should regard the specification as a whole, and the technical scheme in each embodiment can be appropriately combined, so that other implementation manners which can be understood by those skilled in the art can be formed.

Claims

1. A tension swing guide roller device for stretching film, comprising two corresponding fixed wall plates (1), a plurality of corresponding film guide rollers (2) are rotatably arranged between the two fixed wall plates (1), characterized in that, The rotation shaft (6) is arranged between the two fixed wall plates (1), and the corresponding two swing plates (4) are arranged on both sides of the rotation shaft (6). The tension swing guide roller (3) corresponding to the film guide roller (2) is arranged between the two swing plates (4). The air cylinder (5) is hinged to the fixed wall plate (1), and the output end of the air cylinder (5) is hinged to the swing plate (4).

2. The tension swing roller apparatus for stretching a film according to claim 1, characterized by, The bumper (9) is arranged on the fixed wall plate (1) and located on both sides of the swing plate (4), so that the swing amplitude of the swing plate (4) is prevented from being too large.

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