SU36978A1 - Device for riveting pipes and similar hollow bodies - Google Patents

Description

The main patent No. 7022 describes a riveting device for pipes in which a cylindrical body introduced into the cavity, intended to serve as a stop for the formation of a head, can move along the pipe, and this body is located in the pipe with support on another spring-loaded backing body or on springs supported on the pipe wall.

The described device has the disadvantage that the round support bodies for riveting, especially when being pushed along with the help of cables, can be easily rotated. This circumstance causes the possibility of pinched cables. Another disadvantage is that with a variable pipe diameter or with conical pipes it is not always possible to use the same device, since the difference in diameter cannot be compensated for by the springs of the supporting body at all, but it is not enough. undesirable increase

(644)

pressed the body to the pipe. In order to eliminate these drawbacks, an adaptation is proposed in which the riveting stop advances along the rail, which lies motionlessly along the tube to the pipe, and the stop is supported on this rail by a spring arm.

In FIG. 1 shows a longitudinal section of the fixture at the junction of two conical pipes; FIG. 2 is a cross section along line II-II of FIG. L.

Inside the connected conical tubes 1, 2 there is a rail 3 fixed at the ends of the tubes (not shown), with the rail going in the direction of the longitudinal axis of the composite tube and approximately parallel to the enclosing housings along which the rivets 4 are located.

On the rail 3 there is a riveting stop 5, provided with a corresponding outrigger: goy 10 and moved in both directions by means of cables 6, 7, and the rest stop 5 rests on the rail

by means of springs 8, 9. The rivets are inserted from the outside to overcome the resistance of the spring. The blows made on the rivet being constantly pressed inward impart an acceleration to the mass of the stop 5, and its inertia acts in the direction opposite to the blows, due to which the rivet is riveted from the inside of the pipe.

The subject of the patent. The form of making the device for riveting pipes and similar polyethylene bodies according to patent No. 7022, wherein the riveting stop 5 is arranged with the possibility of longitudinal movement on the rail 3 inside the pipe in such a way that the abutment rests against the rail 3 in a spring manner.

KS,

Cfur 1

9 T

S