KR950002486Y1 - Device for luminous working of roll - Google Patents

Abstract

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Description

Rolling roll discharge roughness processing machine with paper seal device

1 is an external perspective view of a paper sealing apparatus equipped with a rolling roll discharge roughness processing machine according to the present invention.

2 is a cross-sectional view taken along the line AA ′ of FIG. 1.

3 is an external perspective view of a brush seal device provided in a rolling roll discharge roughness processing machine according to the prior art.

4 is a cross-sectional view taken along the line B-B 'of FIG.

5 is a configuration diagram of a rolling roll discharge roughness processing machine to which the present invention is applied.

* Explanation of symbols for main parts of the drawings

10: paper seal 20: brush support

22: protruding jaw portion 30: fixing table

32: groove portion 40a, 40b: graphite bulb

50a, 50b: oil inlet 100: rolling roll discharge roughing machine

110: rolling roll

The present invention relates to a rolling roll discharge roughness processing machine for a cold rolling mill having a paper seal device, and more particularly, to prevent fire from occurring by effectively serving as an oil pocket during discharge processing, The rolling roll discharge roughness processing machine which has the paper sealing apparatus which improved roughness workability is related.

In general, the rolling roll discharge roughness processing machine 100 for a cold rolling mill generates electric arc on the surface of the rolling roll 110 by converting electrical energy into thermal energy, as shown in FIG. Is generated, and the surface of the rolling roll 110 is constantly eroded due to the repeated electric discharge, thereby providing a constant roughness (roughness). The reason for forming the roughness on the surface of the rolling roll 110 as described above is to improve the blownability of the strip (strip) sheet work, to prevent the adhesion of the cold rolled coil during the annealing operation, to improve the painting (painting) and machining of the finished product It is very important to increase. The rolling roll discharge roughness machine 100 is provided with a body portion 130 equipped with a plurality of servo units 120, and the servo unit 120 has a hydraulic cylinder (not shown) therein. The brush seal device 140 as shown in FIGS. 3 and 4 is mounted at the front end of each of the servo units 120, respectively, while each of the brush seal devices 140 has a central portion. A plurality of electrodes 142a and 142b for generating a full discharge are positioned at the center, and oil supply holes 145a and 145b are formed in the centers of the electrodes 142a and 142b. The rolling roll electric discharge roughness processing machine 100 configured as described above moves the electrodes 142a and 142b of the brush seal device 140 to the surface of the rolling roll 110 as close as possible (3-4 μm). The rolling roll 110 is rotated while applying electrical energy to the surface to form roughness (roughness).

In this case, an oil (insulating oil) is supplied to the oil supply holes 145a and 145b formed in the electrodes 142a and 142b, and an elliptical brush 147 provided in the brush sealing device 140. By acting as a pocket for temporarily storing the oil to maintain the insulating oil between the electrodes 142a, 142b and the surface of the rolling roll 110 to prevent fire from the occurrence of electric arc have.

However, the brush seal device 140 equipped with the conventional rolling roll discharge roughness processing machine effectively leaks oil between the brushes because the brush 147 made of nylon performs an oil pocket role. There is a risk of fire due to failure to block the arc, and the brush 147 is squeezed between the electrodes 142a, 142b and the surface of the rolling roll 110, so that a roll mark on the surface of the rolling roll 110 may be used. Roll mark) to cause fatal damage, and since the brush support 150 is simply inserted into the groove 152a of the fixing stand 152, the brush support 150 is separated from the fixing stand 152 and separated. This caused a problem of damaging the surface of the rolling roll (110).

The present invention has been devised to solve the above-mentioned conventional problems, and effectively blocks the leakage of oil to insulate between the electrode and the rolling roll to eliminate the risk of fire accident, and even to generate a roll mark on the surface of the rolling roll. It is an object of the present invention to provide a pressurized roll discharge roughness processing machine having a paper sealing device, which stably forms roughness on the surface of a rolling roll to improve the quality of the rolling roll.

In order to achieve the above object, the present invention provides a paper seal of an oval shape to effectively form an oil pocket, and forms a protruding jaw on the brush support on which the paper seal is fixed, and the brush It is to provide a rolling roll discharge roughness processing machine having a paper sealing device formed in the groove to which the projection jaw portion is fitted in the fixture to which the support is coupled.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

In the paper seal device 1 equipped with the rolling roll discharge roughness processing machine according to the present invention, an oval-shaped paper seal 10 is fixed to the brush support 20, and the brush support 20 is provided at a lower end thereof. Protruding jaw portion 22 is formed in the circumferential direction and is coupled to the recess 32 of the holder 30. The paper seal 10 is made of a material of compression molded paper (Paper), the inner surface (10a) forms a smooth surface and the outer surface (10b) is concave, convex uneven surface. In addition, a plurality of elliptical rings (not shown) made of paper may be attached and reinforced on the outer side surface 10b. In this case, since the inner side surface 10a forms a smooth plane, when the inner surface 10b comes into contact with the surface of the rolling roll 11, It enables smooth rotation operation without extra resistance. In addition, the upper edge portion 10c of the paper seal 10 is reinforced in a state thicker than the side to form an oval ring to prevent the paper seal 10 from being easily torn or broken. Meanwhile, the brush support 20 fixing the paper seal 10 forms a protruding jaw portion 22 in the circumferential direction at a lower end thereof, and the protruding jaw portion 22 is coupled to the groove 32 of the fixing table 30. To be fitted. In this case, since the brush support 20 and the support 30 are made of a material having elastic force, when the brush support 20 is pressed from the upper portion of the support 30, the protruding jaw portion 22 is a recess 32 ) And is elastically fitted. Reference numerals 40a and 40b are graphite electrodes sandwiched between the brush support 20 and the fixed support 30, and 50a and 50b are oil injection holes.

The paper sealing device 1 configured as described above is used to be mounted on the tip of each servo unit 120 equipped with a rolling roll discharge roughness processing machine. In this case, when the graphite electrodes 40a and 40b generate an electric arc in close proximity to the rotating rolling roll 110, the oil inlets 50a and 50b of the graphite electrodes 40a and 40b are generated. The insulating oil to be supplied stays in the paper seal 10 for a predetermined time. At this time, the insulating oil flows between the surfaces of the graphite electrodes 40a and 40b and the surface of the rolling roll 110 to effectively generate a fire by electric arc. Will be prevented. In addition, since the paper seal device 1 equipped with the rolling roll discharge roughness processor of the present invention uses the paper seal 10 to perform an oil pocket role, a brush or the like is made of graphite electrodes ( The problem of damaging the surface of the rolling roll 110 is solved by being fitted to the surfaces of the rolling rolls 40a and 40b and the rolling roll 110.

On the other hand, since the brush support 20 to which the paper seal 10 is mounted is fitted with the protruding jaw portion 22 and the recessed portion 32 to the fixing table 30, the brush can be easily brushed even by the rotation of the rolling roll 110. Since the support 20 is not separated from the fixed support 30, the damage of the rolling roll 110 by the brush support 20 is prevented.

As described above, according to the present invention, since the paper seal 10 is used, the insulating oil stays inside for a long time, thereby effectively preventing the fire caused by the electric arc, and the paper seal 10 as an oil pocket means. Since it does not damage the surface of the rolling roll 110, and the brush support 20 is firmly coupled to the fixing stand 30 is obtained a practical effect such as preventing damage.

Claims (1)

In a rolling mill roughness machine for a cold rolling mill having an oil pocket to prevent a fire caused by electric arc, a paper seal 10 for forming the oil pocket is provided. Protruding jaw portion 22 is formed at the lower end of the brush support 20 to which the paper seal 10 is fixed, and the protruding jaw portion 22 is provided at the fixing base 30 to which the brush support 20 is fitted. Rolling roughness machine for a cold rolling mill, characterized in that it comprises a paper sealing device formed with a groove portion 32 is inserted.