Transverse stretching device for polyimide film

Abstract

The utility model belongs to the technical field of polyimide film stretching, and particularly relates to a transverse stretching device for a polyimide film, which comprises an operation panel, a heating area and a stretching area are sequentially arranged at the top of the operation panel, and a stretching table and a stretching piece are sequentially arranged in the stretching area from bottom to top. The stretching part comprises a rolling shaft of a V-shaped structure and pressing rollers rotationally installed at the two ends of the rolling shaft, the two pressing rollers are obliquely and outwards installed at the top of the stretching table in a rolling mode, the pressing rollers enable the polyimide film to be stretched outwards based on rolling, and an air groove for preventing the polyimide film from shrinking is further formed in the stretching table. According to the automatic stretching device, the stretching table, the two pressing rollers and the V-shaped rolling shaft are additionally arranged, when a polyimide film passes through the stretching table, the pressing rollers are driven to roll, and therefore the polyimide film is stretched outwards under the action of the V-shaped rolling shaft, and the automatic stretching function of the device is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to polyimide film stretching technical field, concretely relates to a kind of polyimide film is used transverse stretching device. BACKGROUND

[0002] Polyimide film is used to manufacture high-definition optical film and coating in optical field, and needs to be stretched during production, so stretching device is needed.

[0003] During transverse stretching of polyimide film by stretching device, polyimide film will shrink in longitudinal direction due to its own characteristics, which affects the quality of polyimide film, so a transverse stretching device for polyimide film is needed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of transverse stretching device for polyimide film to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of transverse stretching device for polyimide film, comprising: top is equipped with heating zone and stretching zone in sequence operation plate, the stretching zone from below to above is equipped with stretching table and stretching piece in sequence, the stretching piece includes the rolling shaft of V-shaped structure and the compression roller rotatably installed at the both ends of rolling shaft, two the compression roller is respectively obliquely outwardly rolling installed at the top of stretching table, the compression roller based on rolling makes polyimide film stretch outward.

[0006] Preferably, the stretching table is also provided with air slot to avoid polyimide film shrinkage, the outer portion of the stretching table is provided with air pipe in communication with the air slot, the air pipe is installed with air blower, the air slot is opened on the side of the stretching table close to the two compression rollers.

[0007] Preferably, the top of the air slot is inlaid with filter plate for supporting polyimide film, and the filter plate is provided with air holes for air permeability.

[0008] Preferably, the top of the stretching table is also provided with top plate, and the four corners between the top plate and the stretching table are provided with stand for support, the V-shaped connection of the rolling shaft is provided with connecting seat above, the top of the connecting seat is provided with lifting rod penetrating through the top plate longitudinally, the spring is provided between the top plate and the connecting seat and sleeved on the lifting rod, and the spring makes the two compression rollers elastically press on the stretching table based on compression.

[0009] Preferably, two supporting members for supporting the polyimide film are arranged in the heating area in sequence, and a heating plate for heating the polyimide film is arranged below the two supporting members, and a supporting rod for supporting is arranged between the heating plate and the operating plate.

[0010] Preferably, each of the supporting members comprises a supporting frame and two positioning rollers rotatably arranged on the supporting frame, and the polyimide film is arranged between the two positioning rollers.

[0011] Compared with the prior art, the polyimide film stretching device has the following beneficial effects:

[0012] (1) The stretching table, the two pressing rollers and the V-shaped roller are arranged, when the polyimide film passes through the stretching table, the pressing rollers are driven to roll, so that the polyimide film is stretched outward under the action of the V-shaped roller, and the function of automatic stretching of the device is realized.

[0013] (2) The air groove, the air pipe and the air blower are arranged, so that a cooling area for cooling the polyimide film is formed at the discharge end of the two pressing rollers, so that the polyimide film is directly cooled during the stretching process, and shrinkage of the polyimide film is avoided.

[0014] (3) The lifting rod, the connecting seat and the spring are arranged, so that the pressing force of the pressing rollers on the polyimide film can be automatically adjusted, and the polyimide film is prevented from being pressed excessively. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a side view of the utility model;

[0016] Figure 2 is a top view of the pressing roller, the roller and the air groove of the utility model;

[0017] Figure 3 is a sectional view of the filter plate and the air groove of the utility model;

[0018] In the drawing: 1, operating plate; 2, heating plate; 3, supporting rod; 4, positioning roller; 5, supporting frame; 6, connecting seat; 7, spring; 8, lifting rod; 9, top plate; 10, roller; 11, pressing roller; 12, stand; 13, air pipe; 14, air blower; 15, stretching table; 16, filter plate; 17, air groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0020] Reference Figures 1-2 As shown in the utility model provides a kind of transverse stretching device for polyimide film, it include: the operating plate 1 of heating zone and stretching zone are sequentially provided with top, stretching zone is sequentially provided with stretching table 15 and stretching piece from below to top, stretching piece includes the rolling shaft 10 of V-shaped structure and the compression roller 11 of rotation installation at the both ends of rolling shaft 10, two compression roller 11 are respectively obliquely outwardly rolling installation at the top of stretching table 15, compression roller 11 makes polyimide film stretch outward based on rolling.

[0021] Combined Figure 1 As shown in the utility model, two support pieces for supporting polyimide film are sequentially provided in the heating zone, a heating plate 2 for heating polyimide film is provided below the two support pieces, and a support rod 3 for supporting is provided between the heating plate 2 and the operating plate 1.

[0022] As described above, the operating plate 1, stretching table 15 and stretching piece provided by the utility model are used, the mounting position is provided for the stretching table 15, support piece and heating plate 2 by operation table, polyimide film is conveyed through the above of support piece, heating plate 2 and stretching table 15, heating plate 2 is suspendedly installed below polyimide film by support rod 3, when polyimide film passes through stretching table 15, heated polyimide film passes through two compression roller 11, at this time, compression roller 11 rolls, thereby driving polyimide film to tilt and stretch to both sides, realizing that the equipment automatically stretches polyimide film.

[0023] Further, in order to conveniently suspend polyimide film above the heating plate 2, as shown in the utility model, Figure 1 Each support piece includes a support frame 5 and two positioning rollers 4 rotatably installed on the support frame 5, and polyimide film is disposed between the two positioning rollers 4. The two positioning rollers 4 on both sides suspend and support polyimide film, which facilitates heating of the heating plate 2 below the polyimide film and stretching of the polyimide film.

[0024] In the utility model, combined Figures 1-3As shown, the stretching table 15 of the embodiment is further provided with an air groove 17 for avoiding the shrinkage of the polyimide film, the outer part of the stretching table 15 is provided with an air pipe 13 in communication with the air groove 17, the air pipe 13 is provided with a blower 14, and the air groove 17 is arranged on the side of the stretching table 15 close to the two compression rollers 11.

[0025] As mentioned above, the air groove 17 provided by the utility model is used to pass the external air into the air groove 17 through the blower 14 and the air pipe 13, so that the polyimide film passing through the air groove 17 is air-cooled, and the polyimide film is pressed by the compression roller 11 during the cooling process, thereby avoiding the shrinkage of the polyimide film.

[0026] Further, in order to avoid the polyimide film from collapsing into the air groove 17, reference Figures 2-3 As shown, the top of the air groove 17 is embedded with a filter plate 16 for supporting the polyimide film, and the filter plate 16 is provided with air holes for air permeability. The filter plate 16 supports the polyimide film on the top of the air groove 17, and the air holes facilitate the external air to be directly blown onto the polyimide film, so that the polyimide film is directly cooled during the stretching process. At this time, the polyimide film is pressed on the stretching table 15 by the compression roller 11, thereby avoiding the shrinkage of the polyimide film.

[0027] In the utility model, in combination Figure 1 As shown, the top of the stretching table 15 of the embodiment is further provided with a top plate 9, the four corners between the top plate 9 and the stretching table 15 are provided with stand columns 12 for supporting, the V-shaped connection part of the roller 10 is provided with a connecting seat 6, the top of the connecting seat 6 is provided with a lifting rod 8 vertically penetrating the top plate 9, the spring 7 is arranged on the lifting rod 8 between the top plate 9 and the connecting seat 6, and the spring 7 is compressed to elastically press the two compression rollers 11 on the stretching table 15.

[0028] As mentioned above, the top plate 9, the stand column 12, the connecting seat 6, the lifting rod 8 and the spring 7 provided by the utility model are used to suspend the top plate 9 on the top of the stretching table 15 through the four stand columns 12, to provide the installation position of the lifting rod 8 and the spring 7 through the top plate 9, to automatically lift the lifting rod 8 and install it on the top plate 9 through the spring 7, and to install the lifting rod 8 on the roller 10 through the connecting seat 6, thereby pressing the polyimide film passing through on the stretching table 15.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A transverse stretching device for polyimide films, characterized in that, include: The top is provided with an operation plate (1) with a heating zone and a stretching zone in sequence. The stretching zone is provided with a stretching table (15) and a stretching member in sequence from bottom to top. The stretching member includes a roller (10) with a V-shaped structure and a pressure roller (11) rotatably installed at both ends of the roller (10). The two pressure rollers (11) are respectively inclined and rolled outward on the top of the stretching table (15). The pressure rollers (11) stretch the polyimide film outward based on rolling.

2. The transverse stretching device for polyimide film according to claim 1, characterized in that: The stretching table (15) is also provided with an air duct (17) to prevent the polyimide film from shrinking. The outside of the stretching table (15) is provided with an air duct (13) that communicates with the air duct (17). A blower (14) is installed on the air duct (13). The air duct (17) is opened on the side of the stretching table (15) near the two pressure rollers (11).

3. The transverse stretching device for polyimide film according to claim 2, characterized in that: The top of the air duct (17) is fitted with a filter plate (16) that supports the polyimide film, and the filter plate (16) has air vents for ventilation.

4. The transverse stretching device for polyimide film according to claim 1, characterized in that: A top plate (9) is provided above the stretching table (15). There are four corners between the top plate (9) and the stretching table (15) with columns (12) for support. A connecting seat (6) is provided above the V-shaped connection of the roller (10). A lifting rod (8) that runs longitudinally through the top plate (9) is provided on the top of the connecting seat (6).

5. The transverse stretching device for polyimide film according to claim 4, characterized in that: A spring (7) fitted on the lifting rod (8) is provided between the top plate (9) and the connecting seat (6).

6. The transverse stretching device for polyimide film according to claim 5, characterized in that: The spring (7) compresses the two pressing rollers (11) to elastically press them onto the stretching table (15).

7. The transverse stretching device for polyimide film according to claim 1, characterized in that: The heating zone is provided with two support members that support the polyimide film in sequence, and a heating plate (2) for heating the polyimide film is provided below the two support members.

8. The transverse stretching device for polyimide film according to claim 7, characterized in that: A support rod (3) is provided between the heating plate (2) and the operating plate (1) for support.

9. The transverse stretching device for polyimide film according to claim 7, characterized in that: Each of the supports includes a support frame (5) and two positioning rollers (4) rotatably mounted on the support frame (5), with the polyimide film disposed through the space between the two positioning rollers (4).

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