JPH04134918U - Method and device for applying coating material on the outer peripheral surface of the roller - Google Patents

Abstract

(57) [Summary] [Purpose] To uniformly apply the coating material supplied onto the coating blade to the outer circumferential surface of the roller, and to efficiently obtain a coating film without uneven thickness without causing separation of the coating blade. [Structure] By rotating the coating blade 7 by a rotation mechanism 12 about the tip 13 of the coating blade 7, the excess coating material 8 is allowed to fall naturally from the coating surface and removed. [Effect] There is no need to move the coating blade backward or turn, so there is no need to timely remove excess coating material from the coating surface. Therefore, a high-quality coating film can be obtained without occurrence of uneven thickness portions.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a coating method and device for coating a high viscosity liquid on the outer circumference of a roller. In particular, methods for manufacturing rubber-coated rollers used as fixing rollers in electronic copying machines, etc. and its manufacturing equipment.

0002

[Prior art]

Conventionally, in the toner fixing section of electronic copying machines, etc., there is a gap between the fixing roller and the pressure roller. The paper is passed through and fixed. The rollers used in such fusing parts have elasticity. As required, silicone rubber, fluororesin, etc. are applied to the primer-treated core metal. A solid layer is formed, and the upper layer has a thickness of several μm to several 100 μm that has good releasability from the toner. An offset layer such as silicone rubber is provided. These elastic layers, offset The uniformity of the layer directly affects the image quality, so it must be formed to a uniform thickness. Various methods have been adopted for forming the offset layer, but the offset layer is formed by applying a coating material on the elastic layer. It is manufactured by coating, drying, and vulcanizing. The coating material can be applied to the surface using a relatively simple device. A blade coating method is used that provides a coating film with excellent smoothness and is easy to process after vulcanization. ing. The blade application method uses a roller with a horizontal axis to apply the coat at intervals. Place the rolling blades facing each other, supply a certain amount of coating material between the roller and the blade, and apply the coating material between the roller and the blade. After rotating the coating blade and applying the coating material to the outer periphery, move the coating blade back or Rotate the roller to prevent excess coating material from remaining on the roller surface and causing uneven thickness. there was. However, the timing of retracting or rotating the coating blade is difficult. Unfortunately, thick parts were formed in the coating film. Therefore, this thick part does not occur. If the coating material is supplied without excess material, defects will occur in the coating film, resulting in a uniform film thickness. was not obtained.

0003

[Problems that the idea should solve]

Therefore, the applicant of the present invention has developed the first blade and the part that holds the coating material. Then, the first blade is fitted and the blade is used to evenly spread and apply the coating material on the outer periphery of the roller. Using a split coating blade on the second blade of the section, the first blade After applying the coating material supplied above to the outer peripheral surface of the rotating roller, the first blade is Remove it from the second blade and use the tip of the second blade to smooth and level the surface. Apply the material while storing the excess material in the recess where the first blade was fitted. An application was filed for an invention capable of performing the following (Japanese Patent Application No. 2-37948).

0004 However, the two-part coating blade has a complicated shape and is difficult to process. There were drawbacks such as reduced accuracy, difficulty in maintenance, and poor efficiency. The present invention was made to eliminate the above-mentioned drawbacks, and the coating Finish applying the coating material without forcibly separating the blade from the roller periphery. This allows for high-quality products with no separation of coating blades. It can be manufactured with high yield, and its simple structure allows for good processing accuracy and maintenance. Method and equipment for applying coating material on the outer circumferential surface of a roller that allows for easy maintenance The purpose is to provide a

[0005]

[Means to solve the problem]

In order to achieve the above-mentioned purpose, the present invention provides a method for applying the coating material on the outer peripheral surface of the roller of the present invention. In this method, the shaft is arranged horizontally and the roller is rotated at a constant speed, with a predetermined interval on the outer circumferential surface. A coating material is supplied onto a coating blade arranged as a coating material, and the coating material is applied to the outer circumferential surface. When applying the cloth material by smoothing the surface with the tip of the coating blade, After rotating the roller and applying the coating material to the outer peripheral surface, the coating material is applied to the outer peripheral surface. Place the coating blade around the tip of the blade so that the tip is at the top. Rotate the blade and remove the excess coating material remaining on the coating blade. It is made to fall in the opposite direction.

[0006] In addition, the applicator for applying the coating material on the outer circumferential surface of the roller moves the roller with its axis horizontally at a constant speed. a drive mechanism that rotates the roller at a predetermined distance, and a predetermined interval between the outer circumferential surface of the roller to be rotated; The upper surface arranged to hold the coating material and the outer peripheral surface of the roller Application with a coating blade equipped with a tip to smooth and level the surface of the application material In the apparatus, the coating blade rotates the coating with the tip as an axis. It is equipped with a rotation mechanism that rotates the blade.

[0007]

[Effect]

Coating blades are arranged at predetermined intervals on the outer circumferential surface of a horizontally arranged roller. place The rotating roller holds the coating material fed onto the coating blade. While applying the coating material to the outer circumferential surface of the roller, The tip of the coating blade makes the coating surface smooth and finishes coating the outer circumferential surface of the roller. After that, rotate the coating blade around the tip so that the tip is at the top. Do it like this. By doing so, the excess coating material on the coating blade can be The coating blade will fall towards the side and naturally separate from the coating surface, and the coating blade will be moved at the right time. However, a smooth thin film can be obtained without moving back or turning.

[0008]

【Example】

An example in which the method and device for applying coating material on the outer peripheral surface of a roller of the present invention is applied. This will be explained with reference to the drawings. The coating device 1 shown in FIG. 1 is driven by a motor etc. that is arranged horizontally and rotates at a constant speed. A shaft 3 connected to the mechanism 2 is provided. Shaft 3 has a primer-treated core metal. A roller 4 provided with an elastic layer made of fluororesin or the like is fitted therein. this A coating blade 7 is provided on the outer peripheral surface 5 of the roller 4 with a gap 6 therebetween. The width of the gap 6 can be adjusted depending on the thickness of the coating film applied. During this time A supply body 9 for supplying the coating material 8 to be supplied to the gap 6 is provided, and the supply body 9 supplies the coating material 8 to the gap 6. Lube 10 is activated automatically or manually to apply a desired amount of coating material 8 to the coating brake. A nozzle 11 is provided for supplying water onto the board 7 .

[0009] The rotation mechanism 12 that rotates the coating blade 7 of such a coating device 1 is As shown in FIG. A support 16 that supports the opposite end 15 of the tip 13 of the coating blade 7 is provided. It is connected to the vertical drive mechanism 17 and provided. Applying the coating material 8 to the outer circumferential surface 5 of the roller 4 using the coating device 1 configured as described above. The coating method for this will be explained.

0010 Apply a predetermined amount by manually or automatically opening and closing the valve 10 from the supply body 9 of the coating material 8. A cloth material 8 is fed from a nozzle 11 onto the coating blade. At this time nozzle 11 is moved in the axial direction by a horizontal movable mechanism (not shown), and the coating material 8 is moved onto the coating block. It is evenly supplied onto the radar 7. The coating blade 7 coats the outer peripheral surface 5 of the roller 4. and a predetermined interval 6 (coating thickness), as shown in FIG. The coating material 8 on the blade 7 flows downward toward the gap 6. Shaft fitted with roller 4 3 is rotated clockwise by the drive mechanism 2, and the coating material 8 is applied to the outer circumferential surface 5 of the roller 4. outside When the coating material 8 is applied to the entire surface 5, the vertical drive mechanism 17 is lowered as shown in FIG. By lowering the support 16, the coating blade 7 is rotated around the tip 13. Rotate it so that the tip 13 is at the top. The excess coating material 8a is coated. It naturally falls down the blade 7 surface and is removed from the outer peripheral surface. Therefore, coating The coating is smooth and thick even without backing up or turning the blade 7 at the right time. A uniform coating film can be obtained.

[0011] The above description is an explanation of one embodiment of the present invention, and the present invention is not limited thereto. As shown in FIG. 5, the shape of the coating blade 7a is not a flat cross-section, but a bent portion 7b. After applying the coating material 8 to the roller outer peripheral surface 5, the coating material 8 may be coated. Rotate the blade 7a around the tip so that the tip is above the bent part 7b. In addition, the excess coating material 8a may be stored in the bent portion 7b (FIG. 6).

0012

[Effect of the idea]

As is clear from the above explanation, the method of applying the coating material on the outer peripheral surface of the roller of the present invention and the coating device rotates around the tip of the coating blade. Therefore, after applying the coating material to the outer circumferential surface of the roller, the excess coating material is absorbed by the coating brake. The timing when the coating blade is released from the roller by falling naturally along the surface of the coating blade. There is no need to aim for this, and roller coating films can be manufactured with good yield. Moreover, it is painted A roller with a high-quality coating film with a constant coating thickness and no uneven thickness or defects can be obtained. .

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention applying the coating material coating device for the outer circumferential surface of a roller.

[Fig. 2] A diagram showing the main parts of one embodiment shown in Fig. 1.

[Figure 3] Diagram explaining the method of applying the coating material to the outer peripheral surface of the roller

[Fig. 4] Diagram explaining the method of applying the coating material to the outer peripheral surface of the roller

FIG. 5 is a diagram showing the main parts of another embodiment of the coating device for coating material on the outer circumferential surface of a roller according to the present invention.

FIG. 6 is a diagram illustrating a coating method according to another embodiment shown in FIG.

[Explanation of symbols]

1...Coating device 2... Drive mechanism 3...Axis 4... Laura 5...Outer surface 6... Gap 7, 7a・・・Coating blade 8... Coating material 12...Rotation mechanism 13...Tip

Claims (2)

[Scope of utility model registration request] 1. A coating material is supplied onto coating blades arranged at a predetermined interval on the outer peripheral surface of a roller whose axis is arranged horizontally and rotated at a constant speed, and the coating material is applied to the outer peripheral surface of the roller. When coating the surface by smoothing and leveling it with the tip of the coating blade, after rotating the roller and applying the coating material to the outer circumferential surface, the tip is moved to the uppermost position with the tip of the coating blade as an axis. A method for applying a coating material to an outer circumferential surface of a roller, the method comprising: rotating the coating blade so that the coating material remains on the coating blade and dropping the excess coating material remaining on the coating blade downward. 2. A drive mechanism for rotating a roller having a horizontally arranged shaft at a constant speed; A coating device including a coating blade having a tip that smoothes and smoothes the surface of the coating material supplied to the outer peripheral surface, wherein the coating blade has a rotation mechanism that rotates the coating blade around the tip. A coating device characterized in that: