SU1472197A1 - Device for pulsed feed of welding wire electrode - Google Patents

Abstract

The invention relates to welding technology, in particular, to welding semiautomatic machines of the mounting type. The purpose of the invention is to simplify the design and reduce the size and weight. A device for pulsing the welding wire consists of a magnetic circuit 1 of an electromagnetic drive having a winding 2 with a core 3 inside it with a central hole. Anchor 3 is rigidly connected to the return elastic element 4. In the case 5 of the grip mechanism, a pressure element 6 is mounted, pressed against the body 5 by a spring 7, the gripping elements 8 and the pressure element 9 passing through a central hole in the magnetic circuit 10 of an additional electromagnet containing a winding 11 The movable part 12 of the electromagnet is screwed onto the end of the pressure element 9 and fixed in the desired position by the lock nut 13. The design of the device improves the stability and reliability of the grip of the wire by applying no hard elastic element and an additional electromagnet independent action. 1 il.

Description

The invention relates to welding equipment, in particular to welding semiautomatic machines of the mounting type.

The purpose of the invention is to simplify the design and reduce size and weight.

The drawing shows a device for pulsed welding wire, the cut.

The device consists of a magnetic actuator 1 of the electromagnetic drive, having a winding 2 with core 3 inside it with a central opening for wire passage, which is rigidly connected with the return elastic element 4. The capture mechanism body 5 with internal inclined surfaces is attached to the core 3 , between the upper end of which and the shoulder of the clamping element 6 with the central opening is placed a spring 7, the gripping elements 8 are in contact with the shoulder of the pressing element 9 having a central opening and abutting nitoprovod additional electromagnet 10 provided with a coil 11 having also podvizh-- hydrochloric portion 12 mounted on 1ptoke pressing member 9 with a clearance from the upper end of the L in relative magnetoconductance water 10 and clamp pin; 5gaykoy 13 numeral 14 denotes the fed wire.

The device works as follows.

When the winding 2 is connected to an alternating current source (not shown), the electromagnetic drive of the device begins to create longitudinal mechanical vibrations at the near-resonant frequency of the core 3 and the gripping mechanism rigidly connected with it, consisting of the housing 5, the pressing element 6, the spring 7, the gripping elements 8, the clamping element 9, as well as an additional electromagnet mounted on the housing.e 5 comprising a magnetic core 10, a winding 11 and a movable part 12 with a lock nut 13.

When moving down the core 3 with a gripping mechanism and an additional electromagnet, the pushing elements 6, 9 remain stationary relative to the nuclear reactor cell of the housing 5, and the gripping elements 8 freely pass the wire 14. After reaching the lowermost position by the rim 3 and following its upward movement through the winding 11

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An additional electromagnet transmits a current pulse from the control unit (not shown). During the current flow, an additional electromagnet operates, i.e. The moving part 12 is moved to the magnetic conductor 10. At the same time, the pushing member 9, which is rigidly connected with the movable part 12, moves down and presses the gripping elements 8, moving them along inclined surfaces of the housing 5 to the jamming state and with the wire 14. After this, the current through the winding 11 is terminated. However, before it was switched off, measles 3 had already begun its upward movement, at which, at the points of contact of the gripping elements 8 with the wire 14, friction forces had arisen and the wire had been gripped 14.

Simultaneously with the movement along the inclined surfaces of the housing 5, the gripping elements 8 move down the pressure element 6, while compressing the spring 7, which remains in a stressed state until the end of the upward movement of the core 3 with a gripping mechanism, an additional electromagnet and a clamped wire 14 .

At the moment of the beginning of the movement of the box 3 downward, the spring 7 opens and pushes upward the pressure element 6, which presses on the gripping elements 8 and removes them from the state of holding the wire 14. Throughout the further movement of the box. 3 downward, the gripping elements 8 freely pass wire 14. Next, the cycle repeats.

The movement of the wire 14 to a predetermined pitch depends on the moment of the current pulse sending through the winding 11, as well as on the amplitude of oscillations of the core 3. The gap size c is set according to the diameter of the fed wire from the calculation of preventing the bottom surface of the moving part 12 from hitting the upper end of the magnetic conductor 10 during operation devices.

The use of the device in comparison with the prototype allows to simplify the design, as well as reduce its dimensions and weight, which is especially important for portable welding equipment, in particular for semi-automatic

Claims (1)

mounting type. Invention Formula. A device for pulsed feeding of welding wire containing Elak314721974 a magnetic actuator, a mechanism for gripping the body, an extra tactile, consisting of a body, push, an additional electromagnet of elements in contact with the element consists of two parts, a moving and a gripper, a returnable elastic element, and An additional electromagnet, an additional electromagnet, is rigidly characterized in that it is fixed on the housing, and is movable in order to simplify the design and reduce the size of the additional electromagnet of its dimensions and weight, On the pressure element, the locking mechanism elements are made in JQ, the second is placed in the cavity in addition to the sleeves with collars facing the electromagnet, and the second pressure is placed next to each other, between which the fixed element is spring loaded an electromagnetic actuator that is in contact with the inner surface is bound to an elastic element.