Rotating mandrel device for limited motion mandrel mill

A technology of rotating device and restraining mandrel, applied in metal rolling, metal rolling, metal processing equipment and other directions, can solve the problems of difficulty in stripping the restraining mandrel in a continuous pipe rolling mill, and achieve longer length and extended use. Longevity, effect of reducing thermal load

Inactive Publication Date: 2011-12-21
SHANXI CHUANGQI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, to provide a rotating mandrel device for a limited mandrel continuous pipe rolling mill, and to solve the problem of difficult stripping of the existing limited mandrel continuous pipe rolling mill

Method used

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  • Rotating mandrel device for limited motion mandrel mill
  • Rotating mandrel device for limited motion mandrel mill
  • Rotating mandrel device for limited motion mandrel mill

Examples

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Embodiment Construction

[0013] Such as image 3 As shown, a rotating mandrel device for a mandrel-limiting continuous rolling mill, including: a mandrel-limiting trolley 2, a support rod 5 connected to the mandrel-limiting trolley 2 through a flange, and a support rod 5 Threaded connection with the mandrel 6; the main shaft 2-1 of the mandrel stop trolley 2 is connected with the active rotation device 1 through a flange, and the main shaft 2-1 is installed between the shell of the mandrel stop trolley 2 There are bearings 2-2.

[0014] The active rotating device 1 is a hydraulic motor, or a motor-belt, motor-sprocket drive, or a servo motor direct drive.

[0015] Working process of the present invention:

[0016] The wheel 4 of the mandrel stop trolley 2 runs along the guide rail 3 under the constraint of the stop cylinder. Under the rotation of the roll 7, the pipe 8 enters the rolling section for longitudinal rolling, and the mandrel 6 moves forward or backward according to the process requiremen...

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Abstract

The utility model relates to a rotating mandrel device for a limited-movement mandrel type continuous rolling pipe mill, relating to a steel rolling machine. The invention solves the problem of difficulty in removing rods in existing limited-moving mandrel continuous rolling mills. The invention comprises: a mandrel limiter trolley, a support rod connected with the mandrel limiter trolley through a flange, and a support rod and the mandrel threaded connection, and is characterized in that: the main shaft of the mandrel limiter trolley and the active rotation device pass The flange is connected, and a bearing is installed between the main shaft and the shell of the mandrel stop trolley. The invention is used in a limited-movement mandrel type continuous pipe rolling mill, and because of the rotation of the mandrel, it solves the problem of the mandrel being wrapped by the pipe material, and at the same time prolongs the service life of the mandrel.

Description

technical field [0001] The invention relates to a steel rolling machine, in particular to a limited-movement mandrel type continuous rolling pipe mill. Background technique [0002] There are two ways to roll the continuous pipe mill: one is that the mandrel floats freely with the pipe, which is called a full-floating mandrel continuous pipe mill (as attached figure 1 ); the other is that the mandrel speed can be controlled, which is called limited mandrel rolling mill (as attached figure 2 ). In the continuous pipe rolling mill of the prior art, the mandrel advances in a straight line during the rolling process, and the pipe also advances in a straight line. [0003] During rolling, the mandrel and the pipe move in a straight line or relative to each other. When the pipe is rolled by the roll and the mandrel, the gap between the mandrel and the pipe is very small, especially when the rolling temperature is lowered, the pipe will wrap the mandrel, making it impossible to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B25/02
Inventor 张培庆贾海军李超将郭玉萍
Owner SHANXI CHUANGQI IND
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