KR960010349Y1 - Cooling apparatus for roller of pipe manufacturing - Google Patents

Abstract

None.

Description

Roller chiller of pipe making machine

1 is a front schematic view of the present invention.

2 is a longitudinal sectional view of the present invention.

3 is an enlarged sectional view taken along the line A-A in FIG.

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

5 is a cross-sectional view taken along the line C-C in FIG.

Fig. 6 is an enlarged sectional view taken along the line D-D in Fig. 2;

* Explanation of symbols for main parts of the drawings

1: pipe mill 2: pipe

3: roller 4: roller shaft

5: Jangyo groove 6, 7, 15, 17: water channel

8: rotary joint 9: water supply pipe

10: cooling water inlet port 11: cooling water outlet port

12: water hole 13: water supply pipe

14: sealing material

Currently, one of the various methods of manufacturing steel pipes is to cut the iron plate, which is a pipe material, by long cutting the iron plate sequentially as a circular roller and a concave roller, and finally form a pipe with a circular cross section, and heat the end portion thereof. Weld and complete the pipe. At this time, the rollers bending the iron plate in a circular shape were subjected to tremendous heat generated during electrothermal welding, and because of the continuous high temperature, the rollers had a short durability and had a long time and cost. Therefore, in manufacturing conventional pipes, in order to maintain the life and the precision of the rollers, the cold water flows to the outer surface of the rollers in a primitive way when the rollers are operated. It is difficult to produce high-quality pipes by reacting with water and oxidizing them, and even though the outer surface of the roller is cooled, it cannot cool the heat inherent in the thick roller. In order to solve the above drawback, the present invention is designed to remove the phenomenon that the roller is heated more than necessary by continuously cooling the water from the inside of the roller by allowing the coolant to pass through several branches on the inner surface of the roller. When described in detail based on the accompanying drawings as follows.

Usually, in a pair of rollers 3 mounted on the tube making machine 1 for manufacturing the pipe 2, the groove grooves are formed in the shaft in the center of the upper end of the roller shaft 4 which is built up through the rollers 3. 5) a plurality of coolant channels 6 and 7 are radially drilled on the top and bottom of the recess groove 5, and a rotary joint having a coolant inlet 10 and a shaft 11 formed integrally at the axial end thereof. 8) The water supply pipe (9), which is addressed, is placed in the water supply pipe (9) at the bottom of the water supply hole (12) so that the water flow through the cooling water passage (6). In addition, the sealant 14 is sealed between the end of the inlet pipe 13 directly connected to the inlet 10 of the rotary joint and the long recess 5 of the shaft 4 so that the coolant is not flowed back toward the long recess 5. Do not let it.

In the roller 3, the coolant connected to the water passages 6 and 7 forms the water passages 15, 16 and 17 radially in the transverse direction and the longitudinal direction so that the coolant flows in the direction of the arrow in FIG. It should be proceeded, but in order to actually manufacture the water channel (15) (16) (17) to the roller, the work must be drilled so that the end of the drill channel can be sealed to prevent the coolant from leaking to the sealing material (14) such as bolt Of course.

According to the present invention configured as described above, the cooling water is continuously introduced and cooled along the cooling water channel 15, 16 and 17 installed inside the roller 3 to produce high heat due to welding at the time of manufacturing the pipe 2. It prevents the high heat that rises above a certain temperature and keeps the processing precision to extend the life of the roller.

Claims (2)

In the shaft 4 in which the pipe forming roller 3 and the roller 3 of the steel-making machine 1 which manufacture steel pipe 1 are built, the water flow path (upper and lower part of the roller 2 and the shaft 4) is formed. 6) (7) (15) (16) (17) The roller chiller of the pipe canister which allows the roller (3) to cool by allowing the coolant to flow through. The roller chiller of claim 1, wherein the roller can cool the roller using a rotary joint (8) to allow the coolant to flow in and out of one line.