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Rolling mill for long articles

A technology of rolling mills, articles, applied in the field of rolling mills, which can solve the problems of time-consuming, labor-intensive operation, skill and attention

Active Publication Date: 2014-11-19
SMS INNSEC SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of operation is extremely strenuous and requires great skill and concentration from the operator, and it is also quite time consuming

Method used

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  • Rolling mill for long articles
  • Rolling mill for long articles
  • Rolling mill for long articles

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Experimental program
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Embodiment Construction

[0064] Referring to the drawings, 20 generally indicates a continuous rolling mill for rolling elongated articles 44 .

[0065] The rolling mill 20 defines a rolling axis X and comprises at least two rolling tables 22 arranged in series along the rolling axis X. As shown in FIG. Each rolling station 22 comprises a stationary structure 40, a roll stand shell 24 and three actuators 32.a, 32.b and 32.c.

[0066] The roll stand shell 24 is removably connected to the stationary structure 40 and includes three rolling rolls 26.a, 26.b and 26.c. The three rolls are mounted on a roll stand shell 24 so as to be radially movable with respect to the rolling axis, and the three rolls are rotatable about three respective axes r.a, r.b and r.c arranged at 120° to each other.

[0067]According to a first embodiment of the rolling mill 20 according to the invention, three actuators 32.a, 32.b and 32.c are mounted on a fixed structure 40 and comprise pistons 50.a, 50.b and 50. c, the pistons...

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Abstract

The present invention relates to a rolling mill 20 which defines a rolling axis X and comprises at least two rolling stations 22. At least one rolling station comprises a fixed structure 40, a roll-holder cartridge 24 and three actuators 32. The cartridge is connected removably to the fixed structure and comprises three rolling rolls 26. The rolls are movable radially and rotatable about three respective axes arranged at 120° from each other. The three actuators are mounted on the fixed structure and comprise pistons 50 movable along respective radial axes t arranged at 120° from each other. Each of the actuators is able, during use, to act on one of the rolls so as to impart a radial force suitable for rolling the article 44. The rolling mill 20 according to the invention is characterized in that the three actuators are of the single-stroke type and are arranged so that, when the pistons of two actuators are completely retracted to the end-of-travel stop of the working stroke, a path P is created free from obstacles and parallel to the axis of the third actuator. The path P which is created is such that allows the cartridge to pass out laterally on the opposite side to that where the third actuator is situated.

Description

[0001] This application is a divisional application of the Chinese patent application with the application number 201180019653.9, the application date is March 23, 2011, and the invention title is "rolling machine for long articles". technical field [0002] The present invention relates to continuous rolling mills for rolling elongated hollow and solid articles such as seamless tubes, bars and rods, and in particular to rolling mills comprising a plurality of tables with three adjustable rolls. Background technique [0003] A preferred field of application of the invention is the rolling of seamless pipes, to which the following description will be made with particular reference, without thereby excluding other similar rolling applications. [0004] Continuous roll mills with three adjustable rolls are widely used for the rolling of seamless pipes, hereinafter referred to as Figures 2 to 6 Some main features of the rolling mill are described. A continuous rolling mill (ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B13/10B21B31/10B21B35/04
CPCB21B13/103B21B2203/06B21B17/04B21B17/14B21B13/10B21B35/04B21B1/18B21B35/14B21B31/10
Inventor P·马林M·帕尔凯尔C·帕韦西G·E·扎内拉
Owner SMS INNSEC SPA