Preparation device of microporous film

Abstract

The utility model discloses a device for preparing a microporous film, which relates to the technical field of film preparation and comprises two machine bodies, the bottoms of the two machine bodies are jointly connected with a support, a plurality of fixing rods are arranged on the support at equal intervals, a controller is arranged at the top of each machine body, and a stretching mechanism is arranged between the two machine bodies. Through the carrier roller and the compression roller, an extruded polymer film can be stretched, molecular chains in the film are oriented and arranged to form micropores, meanwhile, the auxiliary roller arranged on the untreated side is matched, and the extension direction of the film in the stretching process can be adjusted through angle transformation between the auxiliary roller and the compression roller; and meanwhile, it is ensured that the film stretching position is stably conveyed at a constant speed, the situation that the film is stacked, so that the stretching thickness is inconsistent is avoided, the dimensional stability of the film is ensured, and the production quality of the microporous film is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to thin film preparation technical field especially relates to a preparation device of microporous film. BACKGROUND

[0002] The microporous film is formed by using polytetrafluoroethylene as raw material and through expansion and stretching, and has micropores with a pore size of 5nm to 1mm.

[0003] The microporous film has a large porosity, can filter all dust particles including bacteria while keeping air circulation, and achieves the purposes of purification and ventilation.

[0004] A common method for manufacturing microporous film is to heat raw material to a proper temperature to make it in a high-elastic state, and then to make the molecular chains in the material orient and arrange through mechanical stretching to form small pores between the molecular chains. However, in the preparation process, the thickness of the film changes with the change of the molecular structure of the material, the film continuously accumulates on the side contacting the stretching mechanism, and the film after forming is prone to wrinkles, the pore distribution is not uniform, the mechanical strength of the film is affected, and the production quality of the microporous film is reduced. In view of this, the application provides a preparation device of microporous film. SUMMARY

[0005] The utility model discloses a preparation device of microporous film, which solves the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A preparation device of microporous film, comprising two machine bodies, the bottom of the two machine bodies is connected with a support, a plurality of fixing rods are equidistantly arranged on the support, a controller is arranged on the top of the machine body, and a stretching mechanism is arranged between the two machine bodies.

[0008] The stretching mechanism comprises a supporting roller and a compression roller, the supporting roller is arranged below the compression roller, a first transmission rod is arranged through the supporting roller, the end of the first transmission rod is rotatably connected with a movable plate, a second transmission rod is arranged through the compression roller, the end of the second transmission rod is rotatably connected with an assembly seat, an extension seat is fixedly connected to the side wall of the assembly seat, an auxiliary roller is arranged on one side of the supporting roller and the compression roller, a third transmission rod is arranged through the auxiliary roller, the end of the third transmission rod is rotatably connected with the extension seat, and a driving mechanism is arranged on the side of the extension seat away from the third transmission rod.

[0009] As a further preferred of the technical solution, the opposite side walls of the two bodies are respectively provided with grooves, and hydraulic cylinders are respectively arranged in the two grooves, and the telescopic end of the hydraulic cylinder is fixedly connected with a connecting seat, and the connecting seat is connected with a connecting rod.

[0010] As a further preferred of the technical solution, the connecting seat is arranged in the arc-shaped groove at the top of the groove, one end of the connecting rod is in contact with the inner wall of the groove, and the other end of the connecting rod extends to the outside of the groove and is fixedly connected with the side wall of the movable plate.

[0011] As a further preferred of the technical solution, the diameter of the auxiliary roller is smaller than that of the supporting roller and the compression roller, and the outer wall of the auxiliary roller is in contact with the outer wall of the compression roller.

[0012] As a further preferred of the technical solution, the driving mechanism comprises a motor, the output shaft of the motor is connected with an adjusting rod through a shaft coupling, and the adjusting rod is sleeved with a bracket.

[0013] As a further preferred of the technical solution, the body is provided with a mounting groove, and the motor is arranged in the mounting groove corresponding in position.

[0014] The adjusting rod is rotatably connected with the bracket, and one end of the adjusting rod away from the motor is fixedly connected with the side wall of the assembly seat.

[0015] The utility model has the following beneficial effects:

[0016] 1. The supporting roller and the compression roller can be used for stretching the extruded polymer film, so that the molecular chains in the film are arranged to form micropores, and the auxiliary roller arranged on the untreated side is used for adjusting the extension direction of the film during stretching, so as to eliminate the internal stress generated during stretching, ensure that the film is stably and uniformly conveyed at the stretching position, avoid the film accumulation causing the inconsistent stretching thickness, ensure the dimensional stability of the film, and improve the production quality of the microporous film.

[0017] 2. The connecting seat and the connecting rod are arranged, the telescopic end of the hydraulic cylinder can drive the movable plate to move synchronously, so as to change the position of the supporting roller and adjust the gap between the supporting roller and the compression roller, the film of different thicknesses can be stretched, the motor drives the assembly seat and the extension seat to rotate, so that the auxiliary roller can always guide the film, avoid the film fluctuation during stretching, reduce the anisotropy of the molecular structure in the stretching direction, and improve the uniformity of the pore size distribution. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1The utility model provides a kind of main view structural schematic drawing of the preparation device of microporous membrane.

[0019] Figure 2 The utility model provides a kind of structure schematic drawing of the body of the preparation device of microporous membrane.

[0020] Figure 3 The utility model provides a kind of structure schematic drawing of the stretching mechanism of the preparation device of microporous membrane.

[0021] Figure 4 The utility model provides a kind of structure schematic drawing of the driving mechanism of the preparation device of microporous membrane.

[0022] Figure 5 The utility model provides a kind of connection structure schematic drawing of hydraulic oil cylinder and first transmission rod of the preparation device of microporous membrane.

[0023] In the drawing: 1, body;11, support;12, fixed rod;13, controller;14, recess;2, stretching mechanism;21, carrier roller;22, first transmission rod;23, compression roller;24, second transmission rod;25, auxiliary roller;26, third transmission rod;3, movable plate;31, link seat;32, connecting rod;4, assembly seat;41, extension seat;5, hydraulic oil cylinder;6, driving mechanism;61, motor;62, adjusting rod;63, bracket. Specific embodiments

[0024] The technical scheme in the embodiments of the utility model will be described below in connection with the drawings in the embodiments of the utility model, apparently, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments.

[0025] The utility model provides technical scheme: as Figure 1 As shown in a kind of preparation device of microporous membrane, including two bodies 1, the bottom of two bodies 1 is commonly connected with support 11, multiple fixed rods 12 are equidistantly arranged on support 11, the top of body 1 is provided with controller 13, stretching mechanism 2 is arranged between two bodies 1, controller 13 is electrically connected with the solenoid valve of hydraulic oil cylinder 5, motor 61 respectively, for controlling the movement of hydraulic oil cylinder 5 telescopic end and the rotation of motor 61 output shaft.

[0026] As Figure 2 With Figure 3As shown, the stretching mechanism 2 includes a supporting roller 21 and a pressing roller 23, and the supporting roller 21 is arranged below the pressing roller 23, a first transmission rod 22 is arranged through the supporting roller 21, and the end of the first transmission rod 22 is rotatably connected with the movable plate 3, a second transmission rod 24 is arranged through the pressing roller 23, and the end of the second transmission rod 24 is rotatably connected with the assembling seat 4, the side wall of the assembling seat 4 is fixedly connected with an extension seat 41, one side of the supporting roller 21 and the pressing roller 23 is provided with an auxiliary roller 25, the diameter of the auxiliary roller 25 is smaller than the diameter of the supporting roller 21 and the pressing roller 23, and the outer wall of the auxiliary roller 25 is in contact with the outer wall of the pressing roller 23, a third transmission rod 26 is arranged through the auxiliary roller 25, and the end of the third transmission rod 26 is rotatably connected with the extension seat 41, and it should be noted that when the film is stretched, the film enters between the supporting roller 21 and the pressing roller 23 from the side provided with the auxiliary roller 25, and is stretched in the conveying direction through the common conveying and extrusion of the supporting roller 21 and the pressing roller 23, so that the molecular chains in the material are oriented and arranged, and small pores are formed between the molecular chains, and further, when the film contacts the auxiliary roller 25, the auxiliary roller 25 maintains the same linear speed as the surfaces of the supporting roller 21 and the pressing roller 23, so as to ensure the stable conveying of the film on the side without stretching, and further, the auxiliary roller 25 can arrange the film to a certain extent, so that the thickness of the film remains uniform, the performance difference of the film in different directions is reduced, and at the same time, the film is guided through the gap between the auxiliary roller 25 and the pressing roller 23, so that the internal stress in the vertical direction of the film is released, and the mechanical strength of the microporous film is improved.

[0027] As shown in Figure 4 the extension seat 41 away from the third transmission rod 26 is provided with a driving mechanism 6, the driving mechanism 6 includes a motor 61, the output shaft of the motor 61 is connected with an adjusting rod 62 through a shaft coupling, a bracket 63 is sleeved on the adjusting rod 62, a mounting groove is formed in the machine body 1, and the motor 61 is arranged in the mounting groove corresponding in position, the adjusting rod 62 is rotatably connected with the bracket 63, and the end of the adjusting rod 62 away from the motor 61 is fixedly connected with the side wall of the assembling seat 4, and it should be noted that the motor 61 is started to operate, the output shaft of the motor 61 drives the adjusting rod 62 to rotate synchronously, the assembling seat 4 on one side of the pressing roller 23 is driven to rotate stably under the support of the bracket 63, the position of the extension seat 41 on the side wall of the assembling seat 4 is adjusted, and the angle between the auxiliary roller 25 and the pressing roller 23 is changed.

[0028] As shown in Figure 5As shown, two relative side walls of the two bodies 1 are respectively provided with grooves 14, and the two grooves 14 are respectively provided with hydraulic oil cylinders 5, the telescopic ends of the hydraulic oil cylinders 5 are fixedly connected with connecting seats 31, the connecting seats 31 are connected with connecting rods 32 in penetration, the connecting seats 31 are arranged in the arc-shaped grooves at the top of the grooves 14, one end of the connecting rods 32 is in contact with the inner wall of the grooves 14, and the other end of the connecting rods 32 extends to the outside of the grooves 14 and is fixedly connected with the side wall of the movable plate 3, and it should be noted that when the telescopic ends of the hydraulic oil cylinders 5 move, the connecting seats 31 will move synchronously in the grooves 14, since one end of the connecting rods 32 is in contact with the inner wall of the grooves 14 and the side wall of the movable plate 3 is in contact with the side wall of the body 1, the connecting rods 32 can play a certain limiting role in the sliding process, so that the both ends of the supporting roller 21 can move stably, and the fluctuation caused by the film stretching process can be avoided, and further, by adjusting the gap between the supporting roller 21 and the compression roller 23, the stretching thickness of the film can be strictly controlled and adjusted according to different application scenes and performance requirements, so that the demand of large-scale production can be met.

[0029] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An apparatus for preparing microporous thin films, comprising two bodies (1), characterized in that, The bottom of the two bodies (1) is connected to a bracket (11), and multiple fixing rods (12) are equidistantly arranged on the bracket (11). A controller (13) is provided on the top of the body (1), and a tensioning mechanism (2) is provided between the two bodies (1). The stretching mechanism (2) includes a support roller (21) and a pressure roller (23), and the support roller (21) is located below the pressure roller (23). A first transmission rod (22) is provided through the support roller (21), and a movable plate (3) is rotatably connected to the end of the first transmission rod (22). A second transmission rod (24) is provided through the pressure roller (23), and a mounting base (4) is rotatably connected to the end of the second transmission rod (24). An extension seat (41) is fixedly connected to the side wall of the mounting base (4). An auxiliary roller (25) is provided on one side of the support roller (21) and the pressure roller (23). A third transmission rod (26) is provided through the auxiliary roller (25), and the end of the third transmission rod (26) is rotatably connected to the extension seat (41). A drive mechanism (6) is provided on the side of the extension seat (41) away from the third transmission rod (26).

2. The apparatus for preparing a microporous thin film according to claim 1, characterized in that, The two machine bodies (1) have grooves (14) on their opposite side walls respectively. A hydraulic cylinder (5) is installed in each of the two grooves (14). A connecting seat (31) is fixedly connected to the telescopic end of the hydraulic cylinder (5). A connecting rod (32) is connected through the connecting seat (31).

3. The apparatus for preparing a microporous thin film according to claim 2, characterized in that, The connecting seat (31) is set in the arc-shaped groove at the top of the groove (14), one end of the connecting rod (32) is in contact with the inner wall of the groove (14), and the other end of the connecting rod (32) extends to the outside of the groove (14) and is fixedly connected to the side wall of the movable plate (3).

4. The apparatus for preparing a microporous thin film according to claim 1, characterized in that, The diameter of the auxiliary roller (25) is smaller than the diameter of the support roller (21) and the pressure roller (23), and the outer wall of the auxiliary roller (25) is in contact with the outer wall of the pressure roller (23).

5. The apparatus for preparing a microporous thin film according to claim 1, characterized in that, The drive mechanism (6) includes a motor (61), the output shaft of which is connected to an adjusting rod (62) via a coupling, and a bracket (63) is sleeved on the adjusting rod (62).

6. The apparatus for preparing a microporous thin film according to claim 5, characterized in that, The body (1) is provided with a mounting slot, and the motor (61) is installed in the mounting slot corresponding to the position; The adjusting rod (62) is rotatably connected to the bracket (63), and the end of the adjusting rod (62) away from the motor (61) is fixedly connected to the side wall of the mounting base (4).

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