CS263488B1 - Apparatus for holding evacuation edges when welding helical tubes - Google Patents

Abstract

The invention relates to the field of welded pipe production. The purpose is to simplify the design of the forming and welding unit when welding helical pipes on devices with a pipe diameter adjustable during the welding process. The device for holding the welded edges when welding helical pipes comprises a pair of inner and outer rollers, located on shafts, kinematically connected to each other in each pair, each of the rollers being mounted on a separate shaft and designed as folded in the direction of the longitudinal axis and provided with spring-loaded bearings arranged between the roller parts, the bearings of one of the rollers being fixedly mounted and the bearings of the corresponding rollers coaxial with them being arranged radially displaceably: the bearings of each of the two rollers arranged on opposite sides of the pipe are equipped with three supports, one of which is designed as a hinged one, and the other two are spring-loaded with coil springs.

Description

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ΦΟΡΜΥΙΙΑ H3OBPETEHHH

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P E Φ E P A T

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Claims (1)

OBJECT OF THE INVENTION An apparatus for holding welded edges in the welding of helical tubes, comprising inner and outer rollers (1, 2, 3, 4) positioned on the shafts (6), kinematic mats connected together in each pair, characterized by that each of the rollers (1, 2, 2, 4) is mounted on a self-assembled shaft (6), on which bearings (7) for bearings (7) of one of the bearings (7) are provided between the individual rollers; the rollers (1, 3), for example of the inner one, and the bearing of the coaxial roller is radially displaceable and each of the two rollers (2, 4) disposed from the opposite side of the tube wall is each provided with three supports, one (9) of which is articulated, and the other two as a coil spring (10) · 263488