SU902887A2 - Apparatus for welding thin-walled longitudinal-seam tubes - Google Patents

Description

(54) DEVICE FOR WELDING TONKOSTENNB1KH OF LONGITUDINAL PIPE

one

The invention relates to devices used in pipe welding production in the manufacture of thin-walled pipes.

According to the main author. St. No. 205798, a device for welding thin-walled longitudinal seam pipes is known, which includes a rod, pulling rollers, forming rings and provided with knives in front of the welding zone for simultaneous trimming of the billet of both edges and right rollers 1.

This device provides equidistant edges and tight junction.

The aim of the invention is to provide high quality processes for trimming the edges of the tape and welding thin-walled pipes.

This is achieved by supplying the known device with support rollers, one of which is fixed on the shank with the possibility of interaction through the wall of the manufactured tube in a plane perpendicular to the plane of cutting with another support roller mounted on the device body;

The support rollers hold the bar from the plane of cutting edges.

FIG. 1 shows the proposed device; in fig. 2 shows section A-A in FIG. one.

The device includes a rod I, fastened at one end by bolts 2, at the other end held by rollers 3 and 4. Rollers 3 are fastened in the shank and rotate freely. The rollers 4 are attached to the housing of the device and are driven (not shown). Forming rings 5 and 6 serve for the final rolling of the tape into the tube. The ring 5 is attached to the housing of the device, the ring 6 is attached to the rod, forming a slit die.

ten

In front of the rings there is a lock of 7 tape edges, which keeps the pipe from turning and from overlapping edges. Round knives 8 and 9 are installed behind the forming rings.

, 5 ka edges of the tape. The knife 8 is attached to the boom 1, the knife 9 is attached to the body.

Calibration die 10 serves to align the edges for welding. Welding is carried out with an argon arc burner P. For removing tape waste when cutting edges.

20 on the machine installed coils 12 and 13

having a drive (not shown)

Forming rollers 14 and 15 serve for

rolling the ribbon into a pipe that is fixed

Claims (1)

Claim A device for welding thin-walled longitudinal-seam pipes according to ed. St. No. 205798, characterized in that, in order to improve the quality of the process of trimming the edges, the device is equipped with support rollers, one of which is mounted on the rod with the possibility of interaction through the wall of the manufactured pipe in a plane perpendicular to the cutting plane with another support roller mounted on the device body.