KR20160101148A - Pressure roller and manufacturing method therefor - Google Patents

Abstract

The present invention discloses a pressure roller and a manufacturing method thereof. The pressure roller includes a center shaft, a barrel, and a flat plate fixing device having a narrow groove connected to both ends of the barrel. On the surface of the central axis, there is a layer of high temperature thermal insulation material, and the barrel is piled up after the annular meta-aramid paper having a hole in the center having the same area is covered in the radial direction of the central axis. Advantageous effects of the present invention are that the aramid paper barrel has excellent abrasion resistance, high temperature resistance, aging resistance and dimensional stability, density is smaller than metal, and inertia mass is reduced during operation, thereby achieving a great improvement in processing accuracy.

Description

[0001] Pressure roller and manufacturing method therefor [0002]

The present invention relates to a pressure roller and a manufacturing method thereof.

With the development of economy and science and technology, various kinds of industries such as liquid crystal display protective film, printed circuit board, paper, and plastic have brought great development. All the materials used in this industry need to realize the flatness of the material surface through the combination of one pressure roller and one heating roller. Conventional pressure rollers are mainly made of alloys such as iron or steel, since such pressure rollers of metallic materials are less resistant to the action of friction machines and therefore less abrasion resistant; The hardness of the alloy such as iron or steel is high and the toughness is not good, which can lead to deformation, surface softening, and even melting; Due to the density of iron or steel, inertia mass is likely to fluctuate in size when operating on highway, which affects machining accuracy.

In order to solve the above problems, CN CN201220340814.6 and CN201020217584.5 disclose a pressure roller in which a wear resistant layer is increased on the surface of a metal roller body. In CN CN201220340814.6, The pressure roller with a composite rubber layer is disclosed, and the problem of weak abrasion resistance and toughness of the surface of a conventional metal pressure roller is solved. However, such a composite rubber layer can not withstand high temperature and can not be used in a film or plastic industry to be heated. CN201020217584.5 discloses a pressure roller composed of a substrate layer, a silica gel layer and a Teflon sprayed on the surface of an aluminum pipe without a gap. The structure of such a pressure roller is complicated and the cost is high. Therefore, when the Teflon coating layer is sprayed, Uniformity is likely to occur. Therefore, it can not be used for the production of a relatively high PET film and an ARM film because of the demand for processing precision. In addition, since the steel main body of iron is used in the above patent, It is easy to deform after receiving heat. It has large inertial mass during operation and has a large swing width, which affects the flatness of the surface of the processed film.

The present invention contemplates the present invention to solve the problems existing in the prior art by providing a new material pressing roller.

It is an object of the present invention to provide a pressure roller in order to overcome the shortcomings present in the prior art. The pressure roller of the present invention is advantageous in that it is simple in structure, light in weight, abrasion resistant, resistant to high temperature, prevented from aging, and excellent in size stability.

The object of the present invention is achieved through the following technical solutions.

A pressure roller comprising a roller body and a central shaft, wherein the pressure roller includes a roller body and a central shaft provided on the roller body, and the roller body includes a metal plate fixing device connected to both ends of the barrel and the barrel, Barrels are formed by overlapping of multiple layers of paper having the same area.

As a further refinement of the present invention, the fastening device is a metal plate fastening device.

The material of the metal plate fixing device is iron or copper.

In addition, the paper may be made of natural wood pulp paper or synthetic fibers such as polyimide paper (PI), poly (p-phenylene benzobisoxazole) (PBO), para aramid paper (PPTA) It is paper. Preferred paper is para-aramid paper (PPTA) and meta-aramid paper (PMIA).

In addition, the aramid paper is in the form of a ring with a hole in the center and the diameter of the center hole is slightly greater than or equal to the outer diameter of the central axis.

In addition, the thickness of the aramid paper is from 0.02 to 0.80 mm and the diameter is from 200 to 1000 mm.

In addition, the thickness of the aramid paper is 0.05 to 0.58 mm and the diameter is 400 to 700 mm.

In addition, on the surface of the central axis, there is a layer of high thermal insulation material.

In addition, the length of the barrel is longer than 0.5 meters.

Additionally, the pressure roller density of the barrel in the aramid paper is 1.3-1.8 g / mm < ³ > and preferably 1.4-1.6 mm < ^{3 &} gt ;.

The above technical solution can be further extended according to the following measures. First, a ring-shaped aramid paper is coated on the central axis one by one. Then, a plate-type electromagnetic heating tablet is pressed on both ends of the central axis, and then a constant pressure of 1.5-2.5t is applied intermittently on the heated tablet. The pressure was stopped and a constant pressure of 0.5-1.5t was applied over 24 hours to allow the aramid paper to be compounded with a clearance barrel, and then the plate-type electromagnetic heating tablet was removed and replaced with a metal plate fixing device, . The preferred intermittent dynamic pressure is 1.8-2.2t and the static pressure is 0.8-1.2t. The diameter of the central axis is 30-450 mm reported in literature and the material is steel and its alloy or copper and iron.

Advantageous effects of the present invention are as follows.

(1) The structure of the pressure roller according to the present invention is simple, has a long service life, and is convenient for transportation.

(2) The barrel of the aramid paper is resistant to aging, has excellent stability in size, has a density smaller than metal, light in weight and reduced in inertia mass during operation, thereby greatly improving the precision of the processed product . It is convenient for transportation and mounting because the structure of the provided pressure roller is simple and the weight is light when it is the same volume. Polyethylene terephthalate (abbreviated as PET) for liquid crystal display of mobile phones, computers and televisions It is suitable for large-scale production of film such as ARM film (film after PET surface treatment) and printed circuit board.

(3) The high-temperature insulation material on the surface of the central shaft reinforced the flame retardancy of the pressure roller and extended the service life.

(4) The length of the barrel is longer than 0.5 meters, and the use efficiency can be secured, and the mechanical performance and stability of the pressure roller are also enhanced.

1 is a structural perspective view of a pressure roller according to the present invention, wherein 1 is a central axis, 2 is a barrel, 3 is a metal plate fixing device, and 4 is a high temperature insulating layer.

The technical solution of the present invention will now be described in more detail with reference to specific examples.

1, the pressure roller of the present invention comprises a central shaft 1 and a roller body 2, and the roller body is composed of a barrel 2 and a fixing device 3 at both ends of the barrel, The preferred aramid paper is a barrel of aramid paper, the preferred aramid paper is a meta-aramid paper, the preferred form of the aramid paper is a ring with a hole in the center, the diameter of the central hole in the form of a ring is greater than or equal to the diameter of the central axis, The apparatus is an annular metal plate having a narrow groove at the center, and the material of the annular metal plate is preferably iron or copper, and preferably one layer of the hot insulating material 4 is disposed on the surface of the central axis of the pressure roller And the length of the barrel is preferably longer than 0.5 m.

Meta-aramid paper was chosen because it has excellent high temperature performance and can maintain its electrical performance and mechanical performance for 10 years or longer without aging even when used at a high temperature of 220 ° C for a long period of time. Also, since the heat shrinkage rate at 250 ° C is just 1%, it can not be shrunk, brittle, softened or melted even when exposed to a high temperature of 300 ° C for a short period of time, and the density of the meta aramid paper is 1/6 In the case of a roller body having the same volume, the mass of the meta-aramid paper is 1/6 of that of iron.

The aramid paper barrel proposed in the present invention refers to a barrel made of the same material as the aramid paper. The aramid paper is a high-performance insulating material, and the material of the barrel is selected from meta-aramid paper as the most preferred embodiment. In the case of other types of paper, for example, the paper is made of natural wood pulp paper or polyimide paper , Poly (p-phenylenebenzobisoxazole), para-aramid paper can be used to achieve the object of the present invention and fall within the scope of the present invention.

Example 1

After plating a layer of high temperature thermal insulation material on the surface of the central axis (the method of achieving the step is well known to those skilled in the art and the thermal insulation material is not further described herein as a prior art) 0.08 mm diameter 500 mm diameter ring-shaped meta-aramid paper on the central axis, pressing a flat-plate electromagnetic heating tablet on both ends of the central axis, connecting the heating tablet to the external heating controller, heating the tablet, A pressure of 2t was applied intermittently intermittently, and after the density of the pressure rollers reached the size required for production, a 1t static pressure was applied to the paper which had already been superimposed for 24 hours, . The manufactured barrel is preferably a barrel of a cylinder having a hole in the center. Next, the plate-type electromagnetic heating tablet is removed and replaced with a metal plate fixing device to fix the ring-shaped meta-aramid paper barrel to the central axis, thereby producing the meta-aramid paper pressure roller. Also, by controlling the size and time of the dynamic pressure and the static pressure, it is possible to manufacture a pressure roller of meta-aramid paper of different density. The density is 1.4-1.6 g / mm ³ .

Example 2

The pressure roller of the present invention comprises a central shaft 1 and a roller body, and the roller body is composed of a barrel 2 of aramid paper and two flat plate fasteners 3. The barrel 2 is formed by mixing a ring-shaped meta-aramid paper having the same diameter and para-aramid paper. Specifically, the barrel 2 is formed of a ring-shaped meta-aramid paper having a diameter of 600 nm and a thickness of 0.13 mm and a ring- After the para-aramid paper was exchanged with each other, the plate was further coated on the central axis. Then, a plate-type electromagnetic heating tablet was pressed on both ends of the central axis, the heating tablet was connected to the external heating controller, the tablet was heated and then intermittently 2.2t of pressure is applied and paper is superimposed on one another, and then 1.2t of static pressure is applied to the paper which is already superimposed for 30 hours so that the paper is compounded with a barrel having no gap. Next, when the flat plate electromagnetic heating tablet is removed and replaced with a metal plate fixing device, a barrel composed of ring-shaped meta-aramid paper and ring-shaped para-aramid paper is fixed on the central axis, .

The aramid paper barrel of the present invention is obtained by further laminating aramid paper in the form of a ring having a hole in the center along the diameter direction of the central axis, and the lamination method of the aramid paper in such a ring form is the most preferable embodiment. The aramid paper may be in the form of a rectangle, a cone, or even a paper pulp. It may also be formed by other methods such as winding, packaging and coating in the longitudinal direction of the central axis. In other words, all of the equally effective modifications that can achieve the objects of the present invention and are carried out in accordance with the present invention are included in the scope of protection of the present invention.

It should be noted that the above embodiments are merely intended to explain the present invention and can not act to limit the technical solution of the present invention. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that modifications and equivalents may be resorted to, All substitutions should be included in the scope of protection of the present invention.

Claims (10)

A pressure roller comprising a roller body and a central shaft, wherein the pressure roller includes a roller body and a central shaft provided on the roller body, and the roller body includes a metal plate fixing device connected to both ends of the barrel and the barrel, Wherein the barrel of the pressure roller has a plurality of layers and the same area of the paper is overlapped. The pressure roller according to claim 1, wherein the material of the metal plate fixing device is iron or copper. The method of claim 1, wherein the paper is a synthetic wood pulp paper or a synthetic fiber paper such as polyimide paper, poly (p-phenylene benzobisoxazole), para-aramid paper, or meta-aramid paper roller. The pressure roller according to claim 1 or 3, wherein the paper is a para-aramid paper or a meta-aramid paper. The pressure roller as claimed in claim 1 or 4, wherein the aramid paper is in the form of a ring with a hole in its center and the diameter of the center hole is slightly larger than or equal to the outer diameter of the central axis. 6. The pressure roller as claimed in claim 5, wherein the thickness of the aramid paper is 0.02 to 0.80 mm and the diameter is 200 to 1000 mm. The pressure roller according to claim 6, wherein the thickness of the aramid paper is 0.05 to 0.58 mm and the diameter is 400 to 700 mm. A method of manufacturing a pressure roller as set forth in claim 1, wherein the aramid paper is further coated on the central axis, and then the flat plate electromagnetic heating tablet is pressed at both ends of the central axis, and the constant pressure pressure is applied intermittently and constantly on the tablet after heating. Wherein the pressure roller is made of aramid paper by replacing the flat plate electromagnetic heating tablet with a metal flat plate fixing device after applying the static pressure smaller than the dynamic pressure so that the paper is combined with the barrel having no gap, Gt; The pressure roller manufacturing method according to claim 8, wherein the intermittently applied dynamic pressure is 1.5t-2.5t and the static pressure is 0.5t-1.5t. The pressure roller as claimed in claim 8, wherein the pressure applied to the pressure roller is 1.8-2.2t, the pressure is 0.8-1.2t, and the pressure of the pressure roller is 1.3-1.8g / m < ^{3 &} Gt;

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