RU2630404C2 - Mechanism for additional wire pulsed feed - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: mechanism contains a housing inside which two electromagnetic coils are located with cores and armatures having axial holes for placing the welding wire and two clamps for the welding wire, one of which is located between the armatures with the possibility of reciprocating motion. In this case, the mechanism is provided with a bar, one end of which is connected to a clamp located between the armatures, and on the other end the roller is arranged to interact with a second clamp mounted on a hinge spring-loaded relative to the housing with the possibility of movement relative to the axis of the welding wire.

EFFECT: simplified design.

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Description

The invention relates to technological welding equipment, providing a pulsed supply of a welding wire to the arc burning zone during mechanized arc welding in a protective gas environment with alternating current of industrial frequency when welding metal structures in various spatial positions.

A known mechanism for the pulsed feed of a welding wire, comprising a housing in which two electromagnetic coils with anchors and two wire clips (SU 154273 A1, MPK5 V23K 9/12, publ. 02.15.1990).

A disadvantage of the known mechanism is the large overall dimensions and low efficiency.

The known mechanism of the pulsed feed of the welding wire, comprising a housing in which one electromagnetic coil with an anchor and two clamps for the wire, and the return elastic element is made in the form of a pushing and damping compression springs (RU 2198080 C2, MPK7 V23K 9/12, publ. 10.02. 2003).

The disadvantage of the mechanism is the inability to synchronize the beginning and end of the pulse with arc processes.

The known mechanism of the pulsed feed of the welding wire, comprising a housing, two electromagnetic coils with anchors and two wire clamps, one of which is fixed motionless, and the second is located between the anchors and makes a reciprocating motion. The mechanism is equipped with two damping inserts and two cores, one of which is fixed motionless, the other with the possibility of reciprocating movement (RU 2104134 C1, MPK6 V23K 9/12, publ. 02/10/1998).

The main disadvantage of the prototype is the lack of the ability to ensure welding with alternating current of industrial frequency.

The objective of the invention is to develop a pulsed mechanism for the supply of welding wire for welding with alternating current of industrial frequency.

In the pulse feed mechanism of the welding wire, comprising a housing, inside of which are two electromagnetic coils with anchors and two wire clamps. One clamp is located between the anchors with the possibility of reciprocating motion. The second clamp is mounted on a spring-loaded hinge mounted on the housing, with the possibility of pivoting movement relative to the axis of movement of the wire. The fixed grip is mounted on a spring-loaded hinge mounted on the housing, with the possibility of its pivoting movement. The mechanism is equipped with a bar and roller with the ability to rotate the clamp.

In FIG. 1 shows a pulse feed mechanism of a welding wire.

The pulse feed mechanism of the welding wire comprises a housing 1, inside of which there are two electromagnetic coils 2 and 3 with cores 4 and 5 and with anchors 6 and 7, between which a wire clip 8 is installed, a rod 9 is installed on it, connecting the wire clip 8 roller 10. Anchors 6 and 7 and cores 4 and 5 have an axial hole for the welding wire 11.

Clips 8 and 12 ball type. Between the housing 1 and the clamp 12, a compression spring 13 is installed.

The pulse feed mechanism of the welding wire operates as follows.

When power is supplied to the coil of electromagnet 3, the armature 7 is drawn into it and pulls the armature 6. The clamp 8 wedges and pulls the wire 11, which slides freely through the clamp 12. After switching the power to the coil 2, the reverse process occurs, i.e. the armature 6 is pulled into the coil 2 and pulls the armature 7. In this case, the clamp 12 is jammed, and the clamp 7 freely slides along the wire 11, while the armature 6 is returned through the bar 9, the roller 10 moves, which moves and raises the front clamping edge 12 fixed to the hinge 14. Rotating clamp 12 causes rearward movement of the wire 11 from the welding zone which leads to the forced breakage of the liquid bridge between the wire and the weld pool. Spring 13 fixes the clamp 12 relative to the roller 10.

Thus, the alternate switching on of the coils ensures the movement of the wire 11 into the welding zone (shown in Fig. 1 by the arrow), while the clamp 12 relative to the axis 13 performs the oscillating movements shown by the arrow and breaks off the liquid jumper between the wire and the welding wire during the return movement of the armature 7 a bathtub.

Claims (1)

A mechanism for pulsed feeding of a welding wire, comprising a housing, inside of which there are two electromagnetic coils with cores and anchors having axial holes for accommodating the welding wire, and two clamps for the welding wire, one of which is located between the anchors with the possibility of reciprocating movement, characterized the fact that it is equipped with a rod, one of the ends of which is connected with the said clamp located between the anchors, and on the other there is a roller with the possibility of interaction with the second clamp IOM mounted on spring-loaded hinge relative to the housing rotatably about the axis of the welding wire.

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