Stretching device for purifying film production

Abstract

The utility model discloses a stretching device for purifying film production, relates to the technical field of purifying film production, and solves the problems that the film penetrating efficiency is relatively low and the purifying film stretching efficiency is influenced because a plurality of tensioning rollers are alternately arranged up and down and are relatively inconvenient to penetrate through the tensioning rollers in sequence before the film is stretched. Comprising a machine cabinet, a plurality of stretching rollers and a plurality of tensioning rollers are distributed and installed in the machine cabinet, and the outer side of a stretching roller shaft rod is fixedly sleeved with two symmetrically-distributed electric push rods; the clamping structure is installed, the movable groove is formed in the machine cabinet, the membrane penetrating efficiency of the purification membrane is effectively improved, the purification membrane can be effectively prevented from being separated from the clamping structure, the rubber strip is fixedly embedded in the lower clamping plate, when the clamping structure is moved from the initial portion of the movable groove to the bent moving portion, the clamping structure can be bent, and therefore the purification membrane can be effectively prevented from being separated from the clamping structure. And the purification film can be effectively prevented from being separated from the clamping structure, so that single-person operation is relatively convenient.

Description

Technical Field

[0001] This utility model relates to the field of purification membrane production technology, specifically a stretching device for purification membrane production. Background Technology

[0002] Air purification membranes are microporous films made from polytetrafluoroethylene (PTFE) through expansion, calendering, and biaxial stretching. During the preparation of PTFE microporous membranes, the degreased substrate needs to be stretched longitudinally, requiring the use of appropriate membrane stretching equipment.

[0003] Existing air purification membrane production stretching machines heat the air purification membrane and use high temperature for flexible stretching. The relative positions of the upper and lower stretching rollers are adjusted by an adjustment mechanism. Installing multiple alternating upper and lower tensioning rollers helps to extend the membrane's travel, increase cooling time, and ensure cooling effect.

[0004] The tension rollers in the above-mentioned device are arranged alternately up and down and there are many of them. Before stretching the film, the personnel need to pass the film through each stretching roller and each tension roller in sequence. However, because the stretching rollers and each tension roller are arranged alternately up and down, it takes a long time to pass the film through each tension roller in sequence. In addition, due to obstructed vision, narrow gaps, and insufficient hand length, the film passing efficiency is low, which affects the stretching efficiency of the purification film. Utility Model Content

[0005] The purpose of this invention is to provide a stretching device for the production of clean membranes that facilitates the threading of thin films onto rollers, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stretching device for producing a purification membrane, comprising a cabinet, wherein multiple stretching rollers and multiple tensioning rollers are distributed and installed inside the cabinet, and two symmetrically distributed electric push rods are fixedly sleeved on the outer side of the stretching roller shafts, and the electric push rods are fixedly connected to the inner wall of the cabinet; the device also includes a clamping structure for clamping the end of the purification membrane, the clamping structure being installed inside the cabinet and close to the feed end of the cabinet; movable slots for supporting the movement of the clamping structure inside the cabinet, the two symmetrically distributed movable slots being opened on the side wall of the cabinet; and a heating wire for cutting the purification membrane, the heating wire being installed inside the cabinet and close to the discharge end of the cabinet.

[0007] Preferably, the movable groove includes a bending moving part, the left end of which is connected to an initial part, the clamping structure can be opened within the initial part, and the right end of the bending moving part is connected to a rotating part.

[0008] Preferably, the clamping structure includes a mounting rod that can move inside the cabinet via the movable slot, and both ends of the mounting rod are fixedly sleeved with grips on the outside of the cabinet, which facilitates the movement of the clamping structure.

[0009] Preferably, an upper clamping plate and a lower clamping plate are hinged to the mounting rod, and a plurality of arc-shaped springs distributed at equal distances are installed between the upper clamping plate and the lower clamping plate. The arc-shaped springs can drive the upper clamping plate and the lower clamping plate to rotate and open.

[0010] Preferably, the two ends of the arc spring are fixedly connected to the upper clamping plate and the lower clamping plate respectively, and two symmetrically distributed push rods are fixedly installed on the opposite side of the upper clamping plate and the lower clamping plate, and the cross-sectional shape of the push rods is circular.

[0011] Preferably, the two top rods are located inside the two movable slots respectively, and the top rods can abut against the side wall of the cabinet through the movable slots. The end of the top rod near the side wall of the cabinet is provided with a hemispherical part.

[0012] Preferably, the top rod slides in contact with the side wall of the cabinet through the hemispherical part, the mounting rod is cut from a cylindrical rod, and the diameter of the mounting rod is equal to the width of the bending and moving part.

[0013] Preferably, two symmetrically distributed positioning seats are fixedly installed on the outer side of the cabinet corresponding to the upper side of the initial part. A pin is movably inserted into the positioning seat, and the cross-sectional shape of the pin is circular.

[0014] Preferably, both grips are provided with insertion holes, the diameter of which is equal to the diameter of the pin, and the pin is plugged into and pulled into the grips through the insertion holes.

[0015] Preferably, a reusable adhesive strip is fixedly embedded at the upper end of the lower clamping plate. The adhesive strip can adhere to the purification membrane, and the adhesive strip is located at the point where the upper clamping plate and the lower clamping plate are in contact with each other.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention utilizes a clamping structure and a movable slot on the cabinet. The upper and lower clamping plates in the clamping structure automatically open at the initial part of the movable slot and automatically close via a push rod within the bending and rotating parts of the movable slot. This not only allows the clamping structure to quickly pass the purification membrane through multiple stretching and tensioning rollers via the movable slot, effectively improving the membrane passing efficiency, but also automatically clamps the purification membrane when the clamping structure moves within the bending and moving part, effectively preventing the purification membrane from detaching from the clamping structure.

[0018] This invention uses an adhesive strip fixedly embedded in the lower clamping plate to adhere the purification membrane to the lower clamping plate. This effectively prevents the purification membrane from detaching from the clamping structure when the clamping structure is moved from the initial part of the movable groove to the bending moving part, making it more convenient for single-person operation.

[0019] This invention, by setting a rotating part and an electric heating wire, allows the clamping structure to pull one end of the purification membrane into the rotating part. The purification membrane then contacts the electric heating wire while in a taut state, enabling the electric heating wire to directly cut the end of the purification membrane. This avoids deformation of the purification membrane due to pulling when tearing it off the adhesive strip. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0021] Figure 2 This is a side sectional view of the present invention;

[0022] Figure 3 This utility model Figure 2 Enlarged diagram of A in the middle;

[0023] Figure 4 This is a three-dimensional side sectional view of the cabinet of this utility model;

[0024] Figure 5 This is a schematic diagram showing the disassembled clamping structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the closed state of the upper and lower clamping plates in the clamping structure of this utility model.

[0026] In the diagram: 1. Cabinet; 2. Tensioning roller; 3. Tensioning roller; 4. Electric push rod; 5. Clamping structure; 501. Mounting rod; 502. Holding rod; 503. Upper clamping plate; 504. Lower clamping plate; 505. Arc spring; 506. Top rod; 507. Rubber strip; 6. Movable groove; 601. Bending and moving part; 602. Initial part; 603. Rotating part; 7. Heating wire; 8. Insertion hole; 9. Positioning seat; 10. Pin rod. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0028] Please see Figure 1 , Figure 4The figure shows a stretching device for producing a purification membrane, including a cabinet 1. Multiple stretching rollers 2 and multiple tensioning rollers 3 are installed inside the cabinet 1. Two symmetrically distributed electric push rods 4 are fixedly sleeved on the outer side of the shafts of the stretching rollers 2, and the electric push rods 4 are fixedly connected to the inner wall of the cabinet 1. The device also includes a clamping structure 5 for clamping the end of the purification membrane. The clamping structure 5 is installed inside the cabinet 1 and close to the feed end of the cabinet 1. Movable slots 6 are used to support the movement of the clamping structure 5 inside the cabinet 1. Two symmetrically distributed movable slots 6 are formed on the side wall of the cabinet 1.

[0029] Please see Figure 2 , Figure 3 The movable slot 6 includes a bending and moving part 601. The left end of the bending and moving part 601 is connected to the initial part 602. The clamping structure 5 can be opened in the initial part 602. The right end of the bending and moving part 601 is connected to the rotating part 603. The clamping structure 5 includes a mounting rod 501 that can move inside the cabinet 1 through the movable slot 6. Both ends of the mounting rod 501 are fixedly sleeved with a grip 502 on the outside of the cabinet 1. The grip 502 facilitates the movement of the clamping structure 5.

[0030] Please see Figure 5 An upper clamping plate 503 and a lower clamping plate 504 are hinged to the mounting rod 501. Multiple arc-shaped springs 505 are installed between the upper clamping plate 503 and the lower clamping plate 504 at equal intervals. The arc-shaped springs 505 can drive the upper clamping plate 503 and the lower clamping plate 504 to rotate and open. The two ends of the arc-shaped springs 505 are fixedly connected to the upper clamping plate 503 and the lower clamping plate 504 respectively. Two symmetrically distributed top rods 506 are fixedly installed on the side of the upper clamping plate 503 and the lower clamping plate 504 that are far apart from each other. The cross-sectional shape of the top rods 506 is circular.

[0031] Please see Figure 6 Two push rods 506 are located inside the two movable slots 6 respectively. The push rods 506 can abut against the side wall of the cabinet 1 through the movable slots 6. A hemispherical part is provided at the end of the push rod 506 near the side wall of the cabinet 1. The push rod 506 slides in contact with the side wall of the cabinet 1 through the hemispherical part. The mounting rod 501 is cut from a cylindrical rod, and the diameter of the mounting rod 501 is equal to the width of the bending and moving part 601.

[0032] Please see Figure 1 Two symmetrically distributed positioning seats 9 are fixedly installed on the outer side of the cabinet 1, corresponding to the upper side of the initial part 602. Pins 10 are movably inserted into the positioning seats 9. The cross-sectional shape of the pins 10 is circular. Both handles 502 are provided with insertion holes 8. The diameter of the insertion holes 8 is equal to the diameter of the pins 10, and the pins 10 are plugged and pulled into the handles 502 through the insertion holes 8.

[0033] The working principle of the film-passing rollers is as follows: When the purification film passes through each stretching roller 2 and each tensioning roller 3, the pin 10 is inserted into the gripping rod 502, positioning the clamping structure 5 in the initial part 602 of the movable groove 6. When the clamping structure 5 is in the initial part 602, the upper clamping plate 503 and the lower clamping plate 504 are in the open state. The operator first places one end of the purification film between the upper clamping plate 503 and the lower clamping plate 504, and then moves the clamping structure 5 from the initial part 602 to the bending moving part 601 by using the gripping rod 502. During the movement, the upper clamping plate 503 and the lower clamping plate 504... The two push rods 506 on the lower clamping plate 504 contact the side wall of the cabinet 1 through the hemispherical part, so that the upper clamping plate 503 and the lower clamping plate 504 can automatically close when they move from the initial part 602 to the bending moving part 601, clamping the purification membrane. The clamping structure 5 clamps the end of the purification membrane and moves in the movable groove 6, which can quickly pass the purification membrane through each stretching roller 2 and each tensioning roller 3, effectively improving the membrane passing efficiency. In addition, the clamping structure 5 can automatically clamp the purification membrane during the membrane passing process, which can effectively prevent the purification membrane from falling off the clamping structure 5. Example

[0034] Please see Figure 4 This embodiment further illustrates Example 1: a reusable adhesive strip 507 is fixedly embedded at the upper end of the lower clamping plate 504. The adhesive strip 507 can adhere to the purification membrane, and the adhesive strip 507 is located at the point where the upper clamping plate 503 and the lower clamping plate 504 are in contact with each other.

[0035] In this embodiment: when the purification membrane is placed between the upper clamping plate 503 and the lower clamping plate 504, the personnel use the adhesive strip 507 to stick the end of the purification membrane to the lower clamping plate 504. At this time, the end of the purification membrane will not fall off when the personnel leave. This effectively prevents the purification membrane from falling off the clamping structure 5 when the personnel move the clamping structure 5 from the initial part 602 of the movable groove 6 to the bending moving part 601 by using the handle 502, making it more convenient for single-person operation. Example

[0036] Please see Figure 2 This embodiment further illustrates other embodiments. The heating wire 7 is used to cut the purification membrane. The heating wire 7 is installed inside the cabinet 1 and is close to the discharge end of the cabinet 1.

[0037] In this embodiment: After the clamping structure 5 passes the purification film through each stretching roller 2 and each tensioning roller 3 in sequence via the bending and moving part 601 of the movable groove 6, the clamping structure 5 drives the purification film to the rotating part 603 of the movable groove 6. At this time, the purification film will pass over the heating wire 7. When the taut purification film comes into contact with the heating wire 7, the heating wire 7 can cut the end of the purification film to avoid deformation of the purification film due to pulling when tearing it off the adhesive strip 507. Then, the operator connects the cut end of the purification film to the winding roller. The clamping structure 5 is located in the rotating part 603 and will not affect the purification film. When passing the next purification film, the clamping structure 5 can be moved back.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stretching device for producing a clean membrane, comprising a cabinet (1), wherein a plurality of stretching rollers (2) and a plurality of tensioning rollers (3) are distributed and installed inside the cabinet (1), and two symmetrically distributed electric push rods (4) are fixedly sleeved on the outer side of the shaft of the stretching rollers (2), and the electric push rods (4) are fixedly connected to the inner wall of the cabinet (1), characterized in that, Also includes: A clamping structure (5) is used to clamp the end of the purification membrane. The clamping structure (5) is installed inside the cabinet (1) and close to the feed end of the cabinet (1). The movable slot (6) is used to support the clamping structure (5) to move inside the cabinet (1). Two movable slots (6) are symmetrically distributed and are opened on the side wall of the cabinet (1). The heating wire (7) is used to cut the purification membrane. The heating wire (7) is installed inside the cabinet (1) and close to the discharge end of the cabinet (1).

2. The stretching device for producing a purification membrane according to claim 1, characterized in that: The movable groove (6) includes a bending moving part (601), the left end of which is connected to an initial part (602), and the right end of which is connected to a rotating part (603).

3. The stretching device for producing a purification membrane according to claim 2, characterized in that: The clamping structure (5) includes a mounting rod (501) that can move inside the cabinet (1) through the movable slot (6), and both ends of the mounting rod (501) are fixedly sleeved with grips (502) on the outside of the cabinet (1).

4. The stretching device for producing a purification membrane according to claim 3, characterized in that: An upper clamping plate (503) and a lower clamping plate (504) are respectively hinged on the mounting rod (501), and a plurality of arc-shaped springs (505) are installed between the upper clamping plate (503) and the lower clamping plate (504) at equal distances.

5. The stretching device for producing a purification membrane according to claim 4, characterized in that: The two ends of the arc spring (505) are fixedly connected to the upper clamping plate (503) and the lower clamping plate (504) respectively. Two symmetrically distributed top rods (506) are fixedly installed on the opposite side of the upper clamping plate (503) and the lower clamping plate (504).

6. The stretching device for producing a purification membrane according to claim 5, characterized in that: The two top rods (506) are located inside the two movable slots (6) respectively, and the top rods (506) have a hemispherical part at one end near the side wall of the cabinet (1).

7. The stretching device for producing a purification membrane according to claim 6, characterized in that: The top rod (506) slides in contact with the side wall of the cabinet (1) through the hemispherical part. The mounting rod (501) is cut from a cylindrical rod, and the diameter of the mounting rod (501) is equal to the width of the bending and moving part (601).

8. The stretching device for producing a purification membrane according to claim 2, characterized in that: Two symmetrically distributed positioning seats (9) are fixedly installed on the outer side of the cabinet (1) corresponding to the upper side of the initial part (602), and pins (10) are movably inserted into the positioning seats (9).

9. The stretching device for producing a purification membrane according to claim 8, characterized in that: Both grips (502) are provided with insertion holes (8), and the pin (10) is plugged into and connected to the grips (502) through the insertion holes (8).

10. A stretching device for producing a purification membrane according to claim 4, characterized in that: The upper end of the lower clamping plate (504) is fixedly embedded with a reusable adhesive strip (507), and the adhesive strip (507) is located at the point where the upper clamping plate (503) and the lower clamping plate (504) fit together.

Images