RU2311997C1 - Welding wire pulse feed mechanism - Google Patents

Abstract

FIELD: manufacturing welding equipment, namely attachments for pulse feed of welding wire to welding zone.

SUBSTANCE: mechanism includes housing where stationary clamp for wire and movable clamp made with possibility of motion along wire by means of reciprocation motion unit. The last includes bracket, roller, disc, electric motor, shaft and return spring. Disc is mounted in shaft of electric motor by inclination angle and it engages with roller secured to bracket rigidly mounted on movable clamp. Return spring is made with possibility of spring -loading of movable clamp to side of stationary clamp.

EFFECT: simplified design of mechanism with the same operational efficiency.

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Description

The invention relates to technological welding equipment, and in particular to devices for pulsed feeding of the welding wire into the welding zone.

A known mechanism for the pulsed feed of a welding wire containing two electromagnetic coils with anchors having shanks located inside the housing and two wire clamps (see the description of the patent of the Russian Federation No. 2104134, class B23K 9/12, 02/10/98).

The known mechanism is complex in design, and therefore unreliable in operation.

The known mechanism of the pulsed feed of the welding wire, containing two clamps, with a rod drive with a reciprocating device in the axial direction with a return spring (see the description of the patent of the Russian Federation No. 2154560, class B23K 9/12, 08/20/2000).

A known mechanism for the pulsed feed of a welding wire comprising a housing in which a fixed wire clip and a movable clip are mounted, arranged to move along the wire with a reciprocating device (see the description of patent RU No. 2136463 C1, class B23K 9/12, 09/10/1999).

The described mechanism, like the one above, is complex in design.

The task is to simplify the design.

The problem is achieved in that in the pulse feed mechanism of the welding wire, containing two clamps with a drive in the form of a rod with a reciprocating device in the axial direction with a return spring, one of the clamps is mounted with the ability to move along the wire and spring-loaded towards the fixed clamp, and the drive moving the movable clamp is made in the form of a rod attached to the latter, and is equipped with a roller interacting with a disk mounted at an angle on the axis of the electric motor.

The inventive device is characterized by the presence of the following distinctive features:

a) one of the clamps is mounted for movement along the wire;

b) the movable clamp is spring-loaded towards the fixed clamp;

c) the drive for moving the movable clamp is made in the form of a rod;

d) the rod is attached to the movable clamp;

d) the rod is equipped with a roller;

e) the rod roller interacts with the disk;

g) the disk is mounted at an angle on the axis (shaft) of the electric motor.

Conducted patent research has allowed to conclude that the claimed device meets the criteria for the protection of inventions.

The essence of the claimed is illustrated by the drawing, which schematically shows a General view of the mechanism of the pulsed feed of the welding wire.

The mechanism includes a housing 1, in which two clamps 2 and 3 for the wire 4 are installed. The clamp 2 is mounted for movement along the wire 4 and is spring loaded with a spring 5 in the direction of the fixed clamp 3. A bracket 6 is fixed on the clamp 2, which carries the roller 7, which interacts with a disk 8 mounted at an angle on the axis 9 of the electric motor 10. The electric motor 10 has the ability to move in height - along arrow B, followed by fixing in a certain place.

The mechanism works as follows.

The welding wire 4 is inserted into the mechanism through the clamp 3 and output through the clamp 2. The motor 10 is turned on. The shaft 9 starts to rotate along arrow A along with the disc 8. The disc 8, in turn, rotates along the arrow A, acts on the roller 7 of the bracket 6. And since the disk 8 is installed at an angle to the shaft 9, when the disk 8 is rotated, it acts on the bracket 6 through the roller 7, moving the bracket 6 together with the clamp 2 to the left (according to the drawing) along arrow B, and the bracket is returned to the right extreme position spring 5. During the described movements of the bracket 6, the movable clamp 2 moves along the arrow B. When the clamp 2 goes to the right, the wire 4 is jammed in the clamp 3, and when to the left, the wire 4 is jammed in the clamp 2, but slides along the clamp 3, as a result of which the wire 4 is pushed through the mechanism in the direction of arrow G with pitch t feed. The pitch t of the wire 4 is controlled by the distance L from the center of the shaft 9 to the middle of the roller 7: the smaller it is, the smaller the pitch t, and vice versa.

The described mechanism is simple in design, efficient and can be widely used in the field of welding.

Claims (1)

A pulse feed mechanism of a welding wire comprising a housing in which a fixed wire clip and a movable clip are mounted, arranged to move along the wire by a reciprocating device, characterized in that the reciprocating device of the movable clip along the wire is made in the form of a bracket, a roller, a disk, an electric motor, a shaft and a return spring, while the disk is mounted on an electric motor shaft at an angle and interacts with the roller, secured nnym bracket fixedly mounted on the movable jaw, and a return spring adapted to biasing the movable clamp toward fixed.