Online edge cutting device of PTFE air purification membrane calender

Abstract

This utility model discloses an online edge-cutting device for a PTFE air purification membrane calender, comprising: a calender body with several calendering shafts and edge-cutting components inside; a winding shaft rotatably connected to the calender body; a first motor passing through the calender body and connected to the winding shaft; and several tensioning components installed on the inner walls of both sides of the calender body, located between the winding shaft and the edge-cutting components. This utility model, by setting adjustable tensioning components between the calendering shaft and the winding shaft, allows a second motor to drive a tensioning cam to rotate when the winding shaft winds the air purification membrane to a certain thickness. The tensioning cam abuts and stretches the air purification membrane, increasing the tensile force between the air purification membrane and the winding shaft. Then, a cutter is used to cut the membrane, increasing the friction coefficient between the cutter and the membrane material, preventing blade slippage, and improving the uniformity of the cut edge of the air purification membrane.

Description

Technical Field

[0001] This utility model belongs to the field of air purification membrane production technology, and in particular relates to an online edge trimming device for a PTFE air purification membrane calender. Background Technology

[0002] Air purification membranes are high-porosity microporous films made from polytetrafluoroethylene (PTFE) or ultrapure quartz cellulose through a special process. They have the characteristics of high-efficiency filtration, corrosion resistance, and high temperature resistance, and are widely used in industrial dust removal, medical protection, environmental monitoring and other fields.

[0003] Currently, air purification membranes need to be cut during winding after calendering. However, the air purification membranes currently wound up have an ultra-fine lattice structure formed after biaxial stretching, resulting in a friction coefficient of less than 0.1 when the cutting tool comes into contact with the membrane material. This low surface energy characteristic makes it easy for the cutting tool to slip during the cutting process, making it difficult for the cutting tool to cut into the membrane layer. It is necessary to apply 3-5 times the conventional pressure to achieve effective cutting. However, excessive pressure will cause a calendering deformation zone of 0.2-0.5mm to be generated at the edge of the membrane material, which will destroy the uniformity of the pore structure. Utility Model Content

[0004] The purpose of this invention is to address the problem that the air purification membrane currently being rolled up forms an ultra-fine lattice structure after biaxial stretching, resulting in a friction coefficient of less than 0.1 when the cutting tool contacts the membrane material. This low surface energy characteristic makes it easy for the cutting tool to slip during the cutting process, making it difficult for the cutting tool to cut into the membrane layer. It is necessary to apply 3-5 times the conventional pressure to achieve effective cutting, but excessive pressure will cause a 0.2-0.5mm calendering deformation zone at the edge of the membrane material, which will destroy the uniformity of the pore structure. Therefore, an online edge cutting device for a PTFE air purification membrane calendering machine is proposed.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an online edge-cutting device for a PTFE air-purifying membrane calendering machine.

[0006] include:

[0007] The rolling body contains several rolling shafts and trimming parts;

[0008] A take-up shaft is rotatably connected to the calendering body, and a first motor passes through the calendering body and is connected to the take-up shaft.

[0009] And several tensioning members, which are installed on the inner walls of both sides of the calender body and located between the winding shaft and the trimming member.

[0010] As a further description of the above technical solution:

[0011] The calendering body is provided with a connecting plate, and a linear motor module is provided on the connecting plate. The trimming part is connected to the linear motor module through a slide rail.

[0012] As a further description of the above technical solution:

[0013] The trimming component includes a telescopic cylinder and a cutter, with the cutter connected to the telescopic cylinder.

[0014] As a further description of the above technical solution:

[0015] The tensioning element includes a second motor and a tensioning cam, with the second motor passing through the calendering body and connected to the tensioning cam.

[0016] As a further description of the above technical solution:

[0017] A third motor passes through the calendering body and is connected to the calendering shaft.

[0018] As a further description of the above technical solution:

[0019] A limiting plate is provided on the take-up shaft, and the limiting plate is screwed onto the take-up shaft.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0021] 1. In this utility model, an adjustable tensioning element is set between the calendering shaft and the winding shaft. The tensioning element includes a second motor and a tensioning cam. When the winding shaft winds the air purification film to a certain thickness, the second motor drives the tensioning cam to rotate. The tensioning cam abuts and stretches the air purification film, increasing the tensile force of the air purification film between the winding shaft and the calendering shaft. Then, a cutter is used to cut it, increasing the friction coefficient between the cutter and the film material, avoiding the slippage phenomenon, and improving the uniformity of the edge of the air purification film after cutting.

[0022] 2. In this utility model, by setting two tensioning members, which are respectively located on both sides of the inner wall of the calendering body, it is ensured that the air purification membrane maintains uniform tension when the cam abuts and is tensioned.

[0023] 3. In this utility model, by setting a limiting plate on the winding shaft and screwing the limiting plate onto the winding shaft, the limiting plate can be adjusted according to the width of the winding film. At the same time, it can also ensure that the tensioning cam will not shift when it abuts and stretches the air purification film, and ensure that the air purification film maintains uniform tension when it is cut. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A three-dimensional online edge-cutting device for a PTFE air purification film calendering machine Figure One .

[0026] Figure 2 A three-dimensional online edge-cutting device for a PTFE air purification film calendering machine Figure Two .

[0027] Figure 3 A three-dimensional online edge-cutting device for a PTFE air purification film calendering machine Figure Three .

[0028] Legend:

[0029] 1-Caulking body; 2-Caulking shaft; 3-Trimming part; 31-Telescopic cylinder; 32-Cutter; 4-Rewinding shaft; 5-First motor; 6-Tensioning part; 61-Second motor; 62-Tensioning cam; 7-Connecting plate; 8-Linear motor module; 9-Slide rail; 10-Third motor; 11-Limiting plate. Detailed Implementation

[0030] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] 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 merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of the embodiments of this utility model, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Please see Figures 1-3 This utility model provides a technical solution: an online edge trimming device for a PTFE air purification membrane calender, comprising a calender body 1, which has several calender shafts 2 and edge trimming parts 3 inside;

[0037] A take-up shaft 4 is rotatably connected to the calendering body 1, and a first motor 5 passes through the calendering body 1 and is connected to the take-up shaft 4.

[0038] And several tensioning members 6, which are installed on the inner walls of both sides of the calendering body 1 and located between the winding shaft 4 and the trimming member 3.

[0039] A connecting plate 7 is provided on the calendering body 1, and a linear motor module 8 is provided on the connecting plate 7. The cutting edge 3 is connected to the linear motor module 8 via a slide rail 9. The linear motor module drives the cutter to move left and right.

[0040] The trimming component 3 includes a telescopic cylinder 31 and a cutter 32, with the cutter 32 connected to the telescopic cylinder 31.

[0041] The tensioning element 6 includes a second motor 61 and a tensioning cam 62, with the second motor 61 passing through the calendering body 1 and connected to the tensioning cam 62. The motor shaft of the second motor is connected to the tensioning cam.

[0042] The third motor 10 passes through the calendering body 1 and is connected to the calendering shaft 2.

[0043] A limiting plate 11 is provided on the take-up shaft 4, and the limiting plate 11 is screwed onto the take-up shaft 4.

[0044] Working principle: An adjustable tensioning element is set between the calendering shaft and the winding shaft. The tensioning element includes a second motor and a tensioning cam. When the winding shaft winds the air purification film to a certain thickness, the second motor drives the tensioning cam to rotate. The tensioning cam abuts and stretches the air purification film, increasing the tensile force between the air purification film and the winding shaft. Then, a cutter is used to cut it, increasing the friction coefficient between the cutter and the film material, avoiding blade slippage, and improving the uniformity of the air purification film edge after cutting.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An online edge-cutting device for a PTFE air-purifying membrane calendering machine, characterized in that, include: The rolling body contains several rolling shafts and trimming parts; A take-up shaft is rotatably connected to the calendering body, and a first motor passes through the calendering body and is connected to the take-up shaft. And several tensioning members, which are installed on the inner walls of both sides of the calender body and located between the winding shaft and the trimming member.

2. The online edge trimming device for a PTFE air purification membrane calender according to claim 1, characterized in that, The calendering body is provided with a connecting plate, and a linear motor module is provided on the connecting plate. The trimming part is connected to the linear motor module through a slide rail.

3. The online edge trimming device for a PTFE air purification membrane calender according to claim 1, characterized in that, The trimming component includes a telescopic cylinder and a cutter, with the cutter connected to the telescopic cylinder.

4. The online edge trimming device for a PTFE air purification membrane calender according to claim 1, characterized in that, The tensioning element includes a second motor and a tensioning cam, with the second motor passing through the calendering body and connected to the tensioning cam.

5. The online edge trimming device for a PTFE air purification membrane calender according to claim 4, characterized in that, A third motor passes through the calendering body and is connected to the calendering shaft.

6. The online edge trimming device for a PTFE air purification membrane calender according to claim 5, characterized in that, A limiting plate is provided on the take-up shaft, and the limiting plate is screwed onto the take-up shaft.

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