Stretching device for colorless transparent polyimide film production

Abstract

The utility model discloses a stretching device for producing a colorless transparent polyimide film, and relates to the technical field of film stretching equipment. Comprising a fixed box, one side of the fixed box is open, and a plurality of stretching rollers are arranged in the fixed box; the driving part is arranged on the outer side of the fixed box and used for driving the stretching roller to stretch the film in the length direction; and the adjusting mechanism is arranged on the outer side of the fixing box and used for controlling the stretching width of the film, the adjusting mechanism comprises a supporting piece, a stretching piece and a control piece, and the stretching piece is arranged on the outer side. Through the arrangement of the stretching piece and the control piece, the matching of the mounting plate, the guide block, the connecting shaft, the supporting strip, the extrusion belt, the driving rod, the sliding block and the connecting rod is realized, so that the stretching width of a thin film can be adjusted according to the use requirement, the stretching distance is prevented from being fixed in the stretching process of the thin film, and the production efficiency is improved. Therefore, the width of the thin film cannot be adjusted according to actual use requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of film stretching equipment, in particular to a stretching device for producing colorless and transparent polyimide films. Background Art

[0002] Polyimide film mainly refers to isophthalic polyimide film. Polyimide resin is synthesized with pyromellitic dianhydride and diaminophenyl ether as raw materials. In the production process of polyimide film, it is usually produced by a biaxial stretching device. From the perspective of the process of reaction production of thermosetting polyimide, the polyamic acid resin in the first stage before curing and shaping still has a linear macromolecular structure, and can be dissolved in appropriate solvents and has a certain fluidity. In this way, this stage can be selected for stretching and then cured and formed.

[0003] Existing biaxial stretching equipment for producing polyimide film usually uses chain clips to fix the film when stretching the film horizontally. This method fixes the stretching spacing during the film stretching process, resulting in the inability to adjust the film width according to actual usage requirements. Therefore, a stretching device for the production of colorless and transparent polyimide film is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that when a film is stretched transversely, chain clips are usually used to fix the film. This method fixes the stretching spacing during the film stretching process, resulting in the inability to adjust the film width according to actual usage requirements. The utility model provides a stretching device for the production of colorless and transparent polyimide film.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A stretching device for producing colorless and transparent polyimide film, comprising:

[0007] A fixed box, wherein the fixed box is open on one side and a plurality of stretching rollers are provided inside the fixed box;

[0008] A driving member, disposed outside the fixed box, for driving the stretching roller to stretch the film in the longitudinal direction;

[0009] An adjusting mechanism is arranged on the outside of the fixed box and is used to control the stretching width of the film. The adjusting mechanism includes a supporting member, a stretching member and a controlling member. The stretching member is arranged on the outside and is used to clamp the film. The supporting member is arranged on the outside of the fixed box and is used to provide support for the stretching member. The controlling member is arranged on the outside of the supporting member and is used to control the spacing of the stretching members. The stretching member cooperates with the controlling member to stretch the film in the width direction.

[0010] Furthermore, the driving member includes a fixed cover, which is connected to the fixed box. A plurality of driving gears and connecting gears are provided inside the fixed cover. The driving gears are engaged with the connecting gears, and the driving gears and the connecting gears are staggered. The plurality of driving gears correspond one-to-one to the stretching rollers, and the driving gears are connected to the stretching rollers.

[0011] Furthermore, the support member includes a support plate, the support plate is connected to the fixing box, and a plurality of connection grooves and guide grooves are opened on the outer side of the support plate, and the connection grooves and guide grooves are distributed on both sides of the support plate.

[0012] Furthermore, the stretching member includes a plurality of mounting plates, which are arranged on the outside of the support plate. The mounting plates are respectively provided with a guide block and a connecting shaft on one side relative to the support plate. The connecting shaft rotates inside the connecting groove, and the guide block slides inside the guide groove. A plurality of support bars are provided on one side of the opposite surface of the mounting plate, and tensioning members are provided at both ends of the support bars, and an extrusion belt is installed on the outside of the tensioning member.

[0013] Furthermore, the synchronous wheels correspond to the tensioning members one by one, and the output end of the motor is connected to any synchronous wheel.

[0014] Furthermore, the control member includes a driving rod, which is connected to the support plate. A sliding block is provided on the outside of the driving rod. The sliding block moves relative to the support plate, and the moving direction of the sliding block is parallel to the axis of the driving rod. The sliding block is provided with multiple connecting rods, and the connecting rods connect the mounting plate and the sliding block.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model realizes the coordination of the mounting plate, the guide block, the connecting shaft, the support bar, the extrusion belt, the driving rod, the sliding block and the connecting rod through the arrangement of the stretching member and the control member, so that the stretching width of the film can be adjusted according to the use requirements, thereby avoiding the stretching spacing being fixed during the stretching process of the film, resulting in the inability to adjust the width of the film according to actual use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is the main sectional view of the utility model;

[0019] Figure 3 This is an enlarged view of the drive gear of the utility model;

[0020] Figure 4 This is an enlarged view of the support plate of the utility model;

[0021] Figure 5 This is an enlarged view of the tensile member of the utility model;

[0022] Figure markings: 1. Fixed box; 101. Stretching roller; 2. Driving member; 201. Fixed cover; 203. Driving gear; 204. Connecting gear; 3. Support member; 301. Support plate; 302. Connecting groove; 303. Guide groove; 4. Stretching member; 401. Mounting plate; 402. Guide block; 403. Connecting shaft; 404. Synchronous wheel; 405. Motor; 406. Support bar; 407. Extrusion belt; 408. Tensioning member; 5. Control member; 501. Drive rod; 502. Sliding block; 503. Connecting rod. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0026] The electrical components mentioned in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that performs control such as a computer.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0028] like Figures 1 to 5 As shown, a stretching device for producing colorless and transparent polyimide film includes: a fixed box 1, which is open on one side and has multiple stretching rollers 101 inside the fixed box 1; a driving member 2, which is arranged on the outside of the fixed box 1 and is used to drive the stretching rollers 101 to stretch the film in the length direction; an adjusting mechanism, which is arranged on the outside of the fixed box 1 and is used to control the stretching width of the film, and the adjusting mechanism includes a supporting member 3, a stretching member 4 and a controlling member 5, the stretching member 4 is arranged on the outside and is used to clamp the film, the supporting member 3 is arranged on the outside of the fixed box 1 and is used to provide support for the stretching member 4, the controlling member 5 is arranged on the outside of the supporting member 3 and is used to control the spacing of the stretching members 4, and the stretching members 4 cooperate with the controlling member 5. The film is stretched in the width direction. Specifically, when the film needs to be stretched after production, the film to be stretched is first stretched in the length direction by the cooperation of the fixed box 1 and the stretching roller 101, and then the stretched film is stretched in the width direction by the stretching member 4. In the process of stretching the film in the width direction, the stretching distance of the film in the width direction is controlled by the cooperation of the control member 5 and the stretching member 4, so that the stretching width of the film can be controlled according to actual usage requirements. In the process of stretching the film, the film is stretched in the length direction by the stretching rollers 101 with different rotation speeds. The stretching rollers 101 can be arranged in a straight line or staggered up and down.

[0029] like Figures 1 to 5 As shown, the driving member 2 includes a fixed cover 201, which is connected to the fixed box 1. A plurality of driving gears 203 and connecting gears 204 are provided inside the fixed cover 201. The driving gears 203 are meshed with the connecting gears 204, and the driving gears 203 and the connecting gears 204 are staggered. The plurality of driving gears 203 correspond to the stretching rollers 101 one by one, and the driving gears 203 are connected to the stretching rollers 101. Specifically, when the film is stretched in the longitudinal direction, the stretching rollers 101 are driven to rotate at different speeds by the cooperation of the driving gears 203 and the connecting gears 204. The size of the driving gear 203 gradually decreases from left to right. The connecting gear 204 connects multiple driving gears 203 during use. The connecting gear 204 is an idler gear. The connecting gear 204 transmits power to the driving gears 203 on both sides during use while ensuring that the driving gears 203 rotate in the same direction. The driving gears 203 with gradually decreasing sizes cooperate with the connecting gear 204 to control the rotation speed of the stretching roller 101 to gradually increase. A driving motor is provided on the outside of the fixed cover 201, and the output end of the driving motor is connected to the driving gear 203 with the largest size.

[0030] like Figures 1 to 5As shown, the support member 3 includes a support plate 301, which is connected to the fixed box 1. A plurality of connecting grooves 302 and guide grooves 303 are provided on the outside of the support plate 301. The connecting grooves 302 and guide grooves 303 are distributed on both sides of the support plate 301. Specifically, a plurality of supporting legs are also provided on the outside of the support plate 301 to ensure the stability of the support plate 301 during use. During use, the connecting grooves 302 cooperate with the guide grooves 303 to provide guidance to the stretching member 4 to ensure the stability of the stretching member 4 during use. The guide grooves 303 are arc-shaped, and the center of the guide grooves 303 coincides with the center of the connecting grooves 302.

[0031] like Figures 1 to 5 As shown, the stretching member 4 includes a plurality of mounting plates 401, which are arranged on the outside of the support plate 301, and the mounting plate 401 is respectively provided with a guide block 402 and a connecting shaft 403 on one side relative to the support plate 301, the connecting shaft 403 rotates inside the connecting groove 302, and the guide block 402 slides inside the guide groove 303, and a plurality of support bars 406 are provided on the opposite side of the mounting plate 401, and tensioning members 408 are provided at both ends of the support bars 406, and an extrusion belt 407 is installed on the outside of the tensioning member 408. Specifically, after the stretching roller 101 stretches the film in the length direction, the stretched film is stretched in the width direction through the cooperation of the extrusion belt 407 and the support bar 406, and then the stretching roller 101 is cooperated to perform bidirectional stretching on the film, and the support bar 406 provides position support for the extrusion belt 407 while controlling the extrusion on the same side. The contact surface of the pressing belt 407 is squeezed so that the extrusion belt 407 can stably clamp and fix the film during use. The extrusion belts 407 on the same side rotate in opposite directions during use, and the rotation speeds of the extrusion belts 407 are the same, so as to avoid relative rotation of the extrusion belts 407 in the process of clamping the film, thereby rubbing the film, and ensuring the stability of the film width during stretching. The tensioning member 408 includes a supporting wheel and a fixing frame, and the fixing frame is connected to the support bar 406. The position of the supporting wheel and the fixing frame can be adjusted by a spring or a thread, thereby realizing the adjustment of the tension of the extrusion belt 407, and ensuring that the extrusion belt 407 can stably clamp the film. The material of the extrusion belt 407 can be rubber or silicone, thereby increasing the friction between the extrusion belt 407 and the film, and ensuring the stability of the film clamping.

[0032] like Figures 1 to 5As shown, a synchronous wheel 404 and a motor 405 are further provided on the outside of the mounting plate 401. There are multiple synchronous wheels 404, and the synchronous wheels 404 correspond one-to-one to the tensioning members 408. The output end of the motor 405 is connected to any synchronous wheel 404. Specifically, since the supporting wheel is connected to the synchronous wheel 404, the rotation speed of the multiple supporting wheels is synchronized by multiple mutually meshing synchronous wheels 404. The supporting wheel is a synchronous pulley, and the extrusion belt 407 is a synchronous belt, so as to avoid the support wheel from rotating relative to the synchronous belt when in use, and further ensure that the rotation speed of the extrusion belt 407 is the same.

[0033] like Figures 1 to 5 As shown, the control member 5 includes a driving rod 501, which is connected to the support plate 301. A sliding block 502 is provided on the outside of the driving rod 501. The sliding block 502 moves relative to the support plate 301, and the moving direction of the sliding block 502 is parallel to the axis of the driving rod 501. The sliding block 502 is provided with a plurality of connecting rods 503, and the connecting rods 503 connect the mounting plate 401 and the sliding block 502. Specifically, the driving rod 501 can be a threaded rod or a telescopic rod, so that the sliding block 502 can be pushed linearly during use. Move, while the sliding block 502 moves in a straight line, it pushes the mounting plate 401 to rotate with the connecting shaft 403 as the center, so as to control the width of the film stretching and ensure the accuracy of the film stretching size. While the mounting plate 401 rotates, the guide block 402 guides and connects the guide groove 303 to ensure the stability of the relative position of the mounting plate 401 and the support plate 301 during use. The shape of the guide block 402 can be a T-shaped block or a dovetail block, thereby ensuring the stability of the connection between the mounting plate 401 and the support plate 301.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A stretching device for producing colorless and transparent polyimide film, characterized in that: include: A fixed box (1), the fixed box (1) being open on one side, and a plurality of stretching rollers (101) being provided inside the fixed box (1); A driving member (2) is arranged outside the fixed box (1) and is used to drive the stretching roller (101) to stretch the film in the longitudinal direction; An adjusting mechanism is arranged outside the fixed box (1) and is used to control the stretching width of the film. The adjusting mechanism includes a support member (3), a stretching member (4) and a control member (5). The stretching member (4) is arranged outside and is used to clamp the film. The support member (3) is arranged outside the fixed box (1) and is used to provide support for the stretching member (4). The control member (5) is arranged outside the support member (3) and is used to control the spacing of the stretching member (4). The stretching member (4) cooperates with the control member (5) to stretch the film in the width direction.

2. A stretching device for producing a colorless and transparent polyimide film according to claim 1, characterized in that: The driving member (2) comprises a fixed cover (201), the fixed cover (201) being connected to the fixed box (1), a plurality of driving gears (203) and connecting gears (204) being provided inside the fixed cover (201), the driving gears (203) being meshed with the connecting gears (204), and the driving gears (203) and the connecting gears (204) being staggered, the plurality of driving gears (203) corresponding to the stretching rollers (101) one by one, and the driving gears (203) being connected to the stretching rollers (101).

3. A stretching device for producing a colorless and transparent polyimide film according to claim 1, characterized in that: The support member (3) comprises a support plate (301), the support plate (301) being connected to the fixed box (1), and a plurality of connection grooves (302) and guide grooves (303) being provided on the outside of the support plate (301), the connection grooves (302) and guide grooves (303) being distributed on both sides of the support plate (301).

4. A stretching device for producing a colorless and transparent polyimide film according to claim 3, characterized in that: The stretching member (4) comprises a plurality of mounting plates (401), the mounting plates (401) being arranged outside the support plate (301), the mounting plates (401) being respectively provided with a guide block (402) and a connecting shaft (403) on one side relative to the support plate (301), the connecting shaft (403) rotating inside the connecting groove (302), the guide block (402) sliding inside the guide groove (303), a plurality of support bars (406) being provided on one side opposite to the mounting plate (401), tensioning members (408) being provided at both ends of the support bars (406), and an extrusion belt (407) being installed on the outside of the tensioning member (408).

5. A stretching device for producing a colorless and transparent polyimide film according to claim 4, characterized in that: A synchronous wheel (404) and a motor (405) are further provided on the outside of the mounting plate (401). There are multiple synchronous wheels (404), and the synchronous wheels (404) correspond to the tensioning members (408) one by one. The output end of the motor (405) is connected to any synchronous wheel (404).

6. A stretching device for producing a colorless and transparent polyimide film according to claim 4, characterized in that: The control member (5) includes a driving rod (501), the driving rod (501) is connected to the support plate (301), a sliding block (502) is provided on the outside of the driving rod (501), the sliding block (502) moves relative to the support plate (301), and the moving direction of the sliding block (502) is parallel to the axis of the driving rod (501), the sliding block (502) is provided with a plurality of connecting rods (503), and the connecting rods (503) connect the mounting plate (401) and the sliding block (502).

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