CN2206693Y - Large-current single-chain continuous transmission gun - Google Patents

Abstract

The utility model relates to a high-current single-chain transmission gun special for continuous long welding rods. A machine core of the high-current single-chain transmission gun comprises a set of single chain nipping transmitting mechanisms. The continuous long welding rods are transmitted along an axle wire. The nipping transmitting mechanism comprises a driving chain and a pair of chain wheels. A pair of metal electrodes is installed on the driving chain at every definite pitch. The metal electrode is provided with a groove shape suiting the width of the conducting groove of a welding rod. The welding rods are nipped and transmitted to go forward by the metal electrodes, and meanwhile, the metal electrodes slide to rub to feed electricity for the welding rods on an electric brush board which is parallel to the axle wire.

Description

Large-current single-chain continuous transmission gun

The utility model is applicable to a kind of big electric current strand continuous transmission gun that is exclusively used in continuous covered electrode.

The existing long commercial Application history of at present general manual covered electrode has advantages such as the weld metal inherent quality is good, the appearance Forming Quality is good, cost is low, equipment is simple, energy all-position welding, applied range.But covered electrode also exists critical defects such as poor continuity, welding efficiency are low, needs the frequent welding rod of changing in the welding process, causes joint many, influences weldquality.Its power transmission mode is the static transmission of electricity of tail end clamping, and welding current is by the whole length of welding rod, and welding rod is long more, and core wire resistance is big more, the easy more rubescent cracking of electrode coating.Caloric value is big in the welding process, is subjected to the restriction of radiating condition, and the factor of energising length, allows the current density passed through limited, has limited speed of welding.Using gases protection at present weldering has automatically solved the problem of continuous welding; but welding wire surface does not have coating, has lost the protective effect and the Welding Metallurgy effect of slag, and it is of poor quality to exist weld metal; forming quality and penetration etc. be all not as good as covered electrode, and only can weld limited several metals.Add bad adaptability, cost height, the complicated heaviness of equipment, to shortcomings such as working condition requirement height.In addition, owing to lack the stabilising arc effect of coating, splash phenomena is serious.Not only influence workpiece surface quality, and welding material waste rate reaches 10～15%.

In decades, people are seeking the novel welding material and the equipment of the comprehensive above-mentioned two kinds of welding method advantages of a kind of energy always.

The purpose of this utility model provides a kind of continuous wire feed of Long Welding rod that is, the big electric current strand transmission gun of continuous transmission of electricity is to realize the continuous welding of continuous covered electrode.

The Long Welding rod that the utility model was suitable for is the unrestricted covered electrode of a kind of joint length, opens the pair of conductive groove every a fixing pitch on the welding rod, makes core wire exposed, forms electric contact, is convenient to transmission of electricity.

The utility model comprises the front end of housing, electric current lead-in wire, housing and outlet, the import that the rear end is provided with welding rod, and movement is housed in the housing, and welding rod passes housing and carries along the axis of movement.Described movement comprises a driving-belt, a pair of belt wheel and deceleration motor.On the driving-belt on Long Welding rod the affixed metal electrode seat of the point of a pitch length, in electrode tip holder, be provided with a pair of slidable electrode, the axis of electrode pair is vertical mutually with the movement axis, and the end width that two electrodes are relative is suitable mutually with the conductive trough width of Long Welding rod.Electrode pair snaps in the welding rod conductive trough under the driving-belt effect, pinch welding rod and advance; Simultaneously, metal electrode is to by importing core wire with electrically connecting of welding current lead-in wire with electric current.

Realize that preferred mode of the present utility model is that described driving-belt adopts chain, belt wheel adopts sprocket wheel.

Realize that further preferred mode of the present utility model is a described metal electrode pair and the electrically connecting of welding current lead-in wire, and adopts friction slip feed.In movement, be equipped with metal electrode to offseting, two brush plates parallel with the movement axis, brush plate and described electric current lead-in wire be affixed.Like this, the right sliding friction transmission of electricity of metal electrode from both ends and brush plate formation electric brush type.

The utility model has the advantages that to continuous Long Welding rod carry out dynamically, continuously, the multiple spot transmission of electricity, each metal electrode gyroscope wheel stream on driving-belt send, arbitrary moment always have many to metal electrode to the welding rod feed, keep the continuity of transmission of electricity, multiple spot send electricity also to help increasing current density simultaneously.With regard to single electrode, turning to conveyer belt v-belt contact angle district, just break away from conductive trough and stop transmission of electricity, thereby can obtain sufficient cool time, its transmission of electricity time is of short duration and intermittently, do not resemble the power transmission mode of manual electrode holders continuous static; Simultaneously, the electric contact of electrode has adopted the contact alloy combined shaping, thereby allows just can increase welding current density on the whole by bigger electric current, has accelerated speed of welding.

Further set forth the utility model below in conjunction with accompanying drawing by embodiment:

Fig. 1 is a positive view of the present utility model.

Fig. 2 is the cutaway view of bowing of the present utility model.

With reference to accompanying drawing

The utility model comprises housing 1, and the related handle of housing bottom is equipped with gauge tap 5 electric current lead-in wires 7 and penetrates housing from the handle bottom outlet on the handle, and housing front end and rear end are provided with outlet, inlet, and the welding rod outlet is provided with wire guiding nipple 2.The installing movement comprises a driving-chain 4, pair of sprocket 3 and deceleration motor 13 in the housing.On the driving-chain on Long Welding rod the point of a pitch length, an affixed metal electrode seat 8, be provided with a pair of slidable electrode 9 in electrode tip holder, the axis of electrode pair is vertical mutually with the axis of movement, and the end width that two electrodes are relative is suitable mutually with the conductive trough width of Long Welding rod 10.Electrode pair snaps in conductive trough under the driving-chain effect, pinch welding rod and advance.Electrode pair both sides in movement inside are equipped with the electrode pair outer end and are offseted, and two brush plates 11 parallel with the movement axis, and electroplax and movement connect firmly, and movement and electric current lead-in wire are affixed.Therefore, metal electrode right from both ends and the brush plate sliding friction transmission of electricity that forms electric brush type.Simultaneously, electrode cooperates with " V " shape with the brush plate contact position, and electrode is played the positioning and guiding effect.Regulate the connection screw 12 between brush plate, make electrode pair moderate the contact of welding rod conductive trough.Driving mechanism comprises an adjustable speed motor 13 and one group of worm couple 14, drives described driving-chain then, and the gauge tap of motor is contained in the handle part of housing.Other is furnished with motor power automatic speed regulation control circuit and apparatus for protecting power supply 6.In use, metal electrode pinches welding rod to one side with chain and advances, and one side is slided on brush plate, and electric current is imported welding rod.At any time, always have many metal electrode to be clipped on the welding rod simultaneously, can increase and present current density, thus realize continuous Long Welding rod desired dynamically, continuously, the transmission of electricity requirement of big electric current.

From principle of the present utility model, with shell remodeling, and increase necessary annex, can make all kinds of automatic welding apparatus that the electric welding of all kinds of rifle type is used easily.In the present embodiment, shell has handle, and gauge tap is installed on the handle.

, can also power to metal electrode by driving-chain except that above-mentioned described to the power delivery mode of metal electrode with brush with the brush plate sliding friction.

Claims (3)

1, a kind of big electric current strand transmission gun that is exclusively used in continuous Long Welding rod welding, it is characterized in that comprising housing, the electric current lead-in wire, the front end of housing and rear end are provided with the outlet of welding rod, import, movement is housed in the housing, welding rod passes housing and carries along the axis of movement, described movement, comprise a driving-belt, a pair of belt wheel, on the driving-belt on Long Welding rod the affixed pair of electrodes in the position of a pitch length, the end width that two electrodes are relative is suitable mutually with the conductive trough width of continuous Long Welding rod, electrode pair is under the driving-belt effect, snap in the welding rod conductive trough, pinch welding rod and advance, simultaneously, metal electrode is to by importing core wire with electrically connecting of welding current lead-in wire with electric current; Driving mechanism comprises an adjustable speed motor, drives described pinch mechanism by a reducing gear.

2, big electric current strand continuous transmission gun as claimed in claim 1 is characterized in that the driving-belt of described pinch mechanism adopts chain, and a pair of belt wheel adopts sprocket wheel.

3, big electric current strand continuous transmission gun as claimed in claim 1 is characterized in that the electrode both sides of described movement are provided with the brush plate that is parallel to described axis, and brush plate and electric current lead-in wire electrically connect; Described brush plate and metal electrode are to becoming the assembly relation of sliding friction, and metal electrode simultaneously pinches welding rod and advances, the one side feed that slides on brush plate.

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