SU656777A1 - Apparatus for automatic welding of non-rotatable tube joints - Google Patents

Claims (3)

(54) DEVICE FOR AUTOMATIC WELDING OF CURVES PIPE LINKS Directions in amplitude) The signal must be sent to various control elements. Thus, the position of the burners in the vertical (direction and amplitude of the oscillations is regulated by the system A VC (ARND), i.e. the arc length, and in the horizontal direction, the autonomous (not associated with the ARND) control horizontal relay, which reduces the tracking accuracy at the same time by three parameters. In addition, when welding large pieces of Jibi with deep cutting, there is a need to weld one of the cutting edges, while the burner must be bent only from the middle cutting to the edge. At one edge of the section / gk The aim of the invention is to increase the spezheyu accuracy in the welding process simultaneously in three directions. For this, the proposed device is equipped with a collector that extends 1 to 1 in B1 of the rings with the shots mounted on the mechashum shaft for oscillating the burner, while the pullers electrically connected to the slelesh mechanism along the arc and mechanisms for moving the burner across the junction and the vertical movement of the burner, fig. 1. shows the kinematic, cxet.fa device in FIG. 2 prog fil cam mehang-gzm hesitation | on .fig. 3 "- resolution of ayu aa aa figs. 2 | in fig. 4 cutting seam; in fig. 5 "The proposed device, general view1 in FIG. 6, is the same, side view ;, in FIG. 7 is a block diagram of the preposition of the device; On the housing 1 there is a mounted carriage 2 on which the mechanical -1zm 3 oscillations are fixed, on the shaft 4 of which a cam 5 and collector rings are mounted. The rings 6, 7 and 10 have conductive removals 11. The pullers 11 of rings 6 and 7 are connected to the brushes of the movement mechanism 12 across the wall. Pullers 11 gauge 8 and 9 svy zaky with brushes mehshshama 13 vertshsalnogo negeMememisi. The ring 10 is connected to the brushes of the 3 oscillation mechanism, the cam 5 is kinematically connected to the roller 14j and the roller is connected to the burner 15 radius of curvature according to the second corner. These surfaces correspond to the displacement of the VIM weld gap in the 3 52 and Sg cutting sections. The mechanisms 12, 13 and 3 are connected to the mechanism 20 of tracking along the length of the arc through the contacts 21 and 22. The device operates as follows. The start of the start of welding moves roller 14 along the generatrix of cam 5, establish the necessary amplitude of oscillations and the required length of the arc. Then excite the arc. When the shaft 4 is moved, the roller 14 moves along the surface of the cam 5, the profile of which moves the welding torch 15 in the area S, S2 and Sg. When the arc voltage (the distance from the electrode to the product) deviates from the reference error signal, it enters the tracking mechanism 20, in which it is amplified and directed to the collector rings 8 and 9. The ring 8 is electrically connected to the ring 1O. When the welding torch 15 is located at the time of the occurrence of the error signal, for example in zone 5, the puller 11 of the ring 1O closes the circuit of the mechanism 13, which adjusts the position of the welding torch 15 vertically, and depending on the sign of the error signal, the mechanism 13 moves the welding torch 15e up or way down. Upon further oscillation of the bit 15 across the groove due to the rotation of the cam 5, it moves to zones-y, for example .5d. In this case, the ring Yu turns and opens the engine circuit of the mechanism 13. Simultaneously with the ring 1O, the rings 6 and their puller 11 are rotated, the circuit of the mechanism 12 is displaced across the junction, which moves the roller 14 horizontally (left-right) and the puller 11 of the ring 10 closes the circuit of the mechanism 3, which is non-stop, em amplitude of oscillations. Thus, upon the occurrence of a signal that has mismatched, the uenir of the mechanisms 12t 13. And 3 are automatically closed, which work out the disturbance, which leads to an increase in tracking accuracy, hence the quality of the welding connection. When it is necessary to carry out welding on one edge. (Sg or 5h, open by contact 21 the corresponding price of the mechanism 12, which ensures the movement of the direct burner 15 in the section S - S or S - Sj. Thus, one source of information (mechanism 2O) provides for the vertical position of the burner, 15 horizontal and oscillation amplitude adjustment. The device is easy to manufacture, reliable; it provides high precision tracking. Formula of the invention The mechanism for the burner across the joint, the mechanism for the vertical movement of the burner and the tracking mechanism along the arc length, is distinguished by the fact that, in order to improve the tracking accuracy during the welding process simultaneously in three directions provided with a collector made in the form of rings from a puller mounted on the shaft of the mechanism for oscillating the burner, wherein the pullers are electrically connected with the tracking mechanism along the arc length and mechanisms for moving the burner across the butt and vertical movement of the burner and. Sources of information taken into account in the examination 1.Patent of France No. 2211320, cl. In 23K 37 / QO, 1968. 2. Welding production number 1, 1973, p. 45-46 New portable TAM automatic machines for welding of non-rotary joints of pipes with a tungsten electrode with an additive. 3. US patent number 3646309, class. 219-125, 1971. five, . D / .3 Th / y ig.5 /five .6