KR20010058072A - Apparatus for changing welding wire nozzle - Google Patents

Abstract

PURPOSE: A device for exchanging welding wire nozzles is provided to prevent the sticking of a wire nozzle due to the inferior welding for reducing the manufacturing cost, and observe the welding state by using welding light generated during the welding without wearing a welding mask. CONSTITUTION: A device for exchanging welding wire nozzles includes a circular base(5) mounted at a lower end of a torch frame, a divisional wire nozzle mounted in the circular base to move vertically by a driving motor, and a protection glass(40) and a light shielding lens(42) mounted at a lower end part of the circular base for moving vertically, wherein the wire nozzle is formed with a male screw part at a lower end part, a female screw part at an upper part to be inserted by the male screw part, thereby extending longitudinally, and a hole in the center to which a welding wire is guided.

Description

Welding wire nozzle replacement device {APPARATUS FOR CHANGING WELDING WIRE NOZZLE}

The present invention relates to a mig welding equipment for welding a stainless coil strip, and more particularly, in the case of fusion phenomenon of the wire nozzle due to a poor welding occurring during the welding operation of the stainless hot rolled coil strip, simply by replacing only the tip of the nozzle easily The welding wire nozzle replacement device improves the convenience of use by contributing to the reduction of production cost by working, and eliminating the need for the worker to wear the welding surface to visually observe the feeding direction of the welding wire supplied between the base metal and the base of the welding progress part. It is about.

In general, welding work of stainless hot rolled coil strip is mainly performed by MIG welding machine, which requires the operator to observe the end of the welding wire supplied between the base material and the base material to continuously adjust the direction of the torch.

Conventional welding equipment 100 has a traveling part 105 as shown in FIG. 1, the traveling part 105 is a vertical frame 112 is installed vertically to the lower base 110 forming a welding fixture strip (s) The traveling rail 116 and the square guide 118 which are arrange | positioned at both sides of the (), and cross it between the upper sides are provided, and the rack 120 is formed in the underside of the traveling rail 116. As shown in FIG.

In addition, the torch frame 130 mounted on the driving rail 116 and the square guide 118 to be slidably movable has a plurality of guide rolls 132 mounted thereon, such as the motor 134 and the reducer 136. The torch frame 130 is moved along the traveling rail 116 together with the pinion 138 installed on the shaft passing through the vertical guide roll 140, while the torch frame (118) surrounds the square guide 118. It supports the torch frame 130 when the 130 moves.

The nozzle unit 150 has a wire feeding roll 156 on the rear side of the frame 130 for feeding the welding wire 154 from the wire drum 152 installed on the rear side of the torch frame 130. The welding wire 154 is mounted to the wire nozzle 158 at the bottom of the torch frame 130 through the wire guide line.

However, in the welding operation using the welding facility 100 as described above, the operator should always write the welding surface and observe the welding area, and in particular, welding phenomenon of the welding nozzle 158 caused by mismatch of welding conditions and various other factors When it occurs, the entire wire nozzle 158 is disposed of, which causes problems in production cost and work efficiency.

The present invention is to solve the conventional problems as described above, the production cost by simply changing the end of the nozzle simply when the fusion phenomenon of the wire nozzle caused by the welding failure occurs during welding work of the stainless steel hot rolled coil strip The present invention provides a welding wire nozzle replacement device that contributes to savings and improves the convenience of use by eliminating the need for the operator to wear a welding surface to visually observe the feeding direction of the welding wire supplied between the base metal and the base of the welding progress portion. There is a purpose.

1 is a perspective view showing a stainless strip welding apparatus according to the prior art;

2 is a perspective view of a welding wire nozzle replacement apparatus according to the present invention mounted on a welding facility;

3 is a block diagram of a nozzle provided in the welding wire nozzle replacement apparatus according to the present invention;

4 is a detailed view of the welding wire nozzle replacement device according to the present invention;

5 is a block diagram of a protective glass and a viewing window of the welding wire nozzle replacement apparatus according to the present invention;

6 is a sectional view of the nozzle portion of the welding wire nozzle replacement apparatus according to the present invention.

Explanation of symbols on main parts of drawing

5 ..... round base 10 ..... motor

20 ... screw jack 40 ..... protective glass

42 .. Shading lens 52 ..... Air nozzle

68 .... Cylinder 70 ..... Holder

90 .... Wire Nozzle 100 ... Welding Equipment

The present invention to achieve the above object,

In the mig welding equipment for welding a stainless coil strip,

A circular base is mounted on the lower end of the torch frame, and a split type wire nozzle is mounted on the inner side of the circular base to enable the elevating by a driving motor. By providing a welding wire nozzle replacement device characterized in that the mounting is configured to be welded.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

The welding wire nozzle replacement apparatus of the present invention is mounted in a mig welding facility for welding a stainless coil strip, and mounts a circular base on the lower end of the torch frame which is movable in the width direction of the sprip, and a driving motor inside the circular base. Equipped with a split type wire nozzle so as to be able to move up and down, and the lower end of the circular base has a configuration that is equipped with a protective glass and a light blocking barrier capable of lifting up and down.

As shown in FIG. 2, the motor base 7 is installed on the side of the circular base 5 fixed to the torch frame 130 by the torch engagement hole 3, and the motor is disposed thereon. 10 and the reducer 12 are provided, and the end of the motor shaft 14 which has been coupled is connected to the bevel gear 16. In addition, the screw jack 20 vertically connected to the bevel gear 16 has two bearing blocks 22 installed therein and is fixed to the circular base 5, and the opposite direction of the screw jack 20 is a lifting and lowering guide. (24) is installed side by side up and down.

In addition, three holes are formed in the fixed holder frame 30 fitted to the screw jack 20 and the guide 24, and the frame 30 is formed at one side of the circular base 5 in the center hole 32. ) Extends through the wire nozzle fixing bolt 34.

The bolt 34 is movable on one side long hole 5A of the circular base 5.

In addition, a protective glass 40 and a light blocking lens 42 are positioned at the inner end of the circular base 5, and a light projector 46 and a light receiver 48 are provided inside the protective glass 40. The lower end of the circular base 5 is provided with an air pipe guide 50 and an air pipe 54 and an air hose 56 having a plurality of air injection nozzles 52 installed at the end thereof. The air hose 56 is fixed by the air hose holder 57, the on-off valve 58 is installed at the intermediate point.

In addition, the light shield 60 includes a sensor guide 62 installed at an outer side of the circular base 5, an upper limit detection sensor 64 installed at the sensor guide 62, and a lower limit detection sensor 66. (68) is fixed to both sides of the circular base (5) by the clamp of the cylinder 68, the holder 70 is attached to the end of the cylinder 68 rod, and the touch bar 72 on the side of the holder 70 It is installed.

As shown in FIG. 5, the light blocking part 60 is provided with a bolt insertion hole and a connection part in the holder 70, and the connection part is fixed with a bolt and a nut (not shown) at the rod end of the cylinder 68, and the light blocking lens 42 is provided. The protective glass 40, which is smaller in diameter and overlaps inwardly, is inserted inward with the light blocking lens 42, and is attached to the holder 70 by bolts and nuts (not shown).

On the other hand, as shown in FIG. 3, the wire nozzle 90 is short in a bolt and nut type in the conventional one. That is, a male screw portion 94 is formed at the lower end of the nozzle member 92, and an upper female thread portion 96 is formed at the upper side thereof so that the male screw portion 94 can be inserted therein, and is elongated in a threaded manner. ) Is formed to guide the welding wire 154.

Therefore, when the end of the wire nozzle 90 is fused by the welding defect generated during the welding operation to block the hole 98 where the wire 154 is fed, the small wire at the end is not completely discarded. To separate and discard one of the nozzle members 92, the length compensation of the shortened wire nozzle 90 by operating the motor 10 installed on the upper portion of the circular base 5, as shown in FIG. To make it happen.

The operation of the motor 10 lowers the fixed holder frame 30, and the wire nozzles 90 fixed to the fixed holder frame 30 are lowered together. At this time, the transmitter 46 and the light receiver 48 are The wire nozzle 90 is sensed and serves to stop at a certain position.

Referring to the operation of the present invention configured as described above are as follows.

As shown in FIG. 4, the elevating and descending guide 24 and the screw jack 20 are installed in the circular base 5 attached to the torch frame 130 to insert the fixed holder frame 30.

Fixed holder frame 30 is formed with three holes. A screw thread 30A is formed inside the hole into which the screw jack 20 is inserted, so that when the screw jack 20 rotates, the fixed holder frame 30 also moves together. The wire nozzle 90 is inserted into the center hole 32 of the fixed holder frame 30, and the frame 30 and the wire nozzle 90 are also fixed by the nozzle fixing bolt 34.

Two cylinders 68 are fixed to the lower end of the circular base 5 by a cylinder clap 68A, and the holder 70 at the rod end of the cylinder 68 has a protective glass 40 and a shading lens ( 42).

The movement of the cylinder 68 results in moving the light blocking lens 42 and the protective glass 40 up and down. In order to detect this movement, a sensor guide 62 is installed at the lower end of the circular base 5. The upper limit detection sensor 64 and the lower limit detection sensor 66 are installed in the sensor guide 62, and the positions of the light blocking lens 42 and the protective glass 40 are detected by the touch bar 72.

This is because before the start of the welding operation, the base material and the base material is prepared, and after forming the necessary intervals for welding, the operator should check the end of the welding wire when moving the torch frame 130 to the welding point, in this case The light blocking lens 42 and the protective glass 40 must be raised upwards, and after reaching the welding start point of the torch frame 130, the light blocking lens 42 and the protective glass 40 are lowered downwards. It eliminates the inconvenience of wearing welding surface during welding operation and prevents welding spatter from scattering in all directions.

In addition, since the outer diameter of the protective glass 40 is smaller than the inner diameter of the light blocking lens 42 and inserted into the inner diameter of the light blocking lens 42, the expensive light blocking lens is caused by spatter and heat generated during welding. The 42 is prevented from being broken, and the light emitter 46 and the light receiver 48 inserted in the inner diameter of the protective glass 40 are used to detect the position of the wire nozzle 90.

Then, the air hose 56 located on the side of the circular base 5 is bound to the circular base 5 by an air hose holder, and when the valve 58 is opened in the middle portion of the air hose, the air is injected if necessary. The foreign material on the strip (s) is removed.

According to the present invention as described above, when welding the stainless hot rolled coil strip (s), by reducing the wire nozzle 90 fused by poor welding, it can contribute to a reduction in production cost, the operator does not wear a welding surface Even if the welding state can be observed by blocking the welding beam generated during the welding operation can contribute to the improvement of the work efficiency.

Claims (2)

In the mig welding equipment for welding a stainless coil strip, A circular base is mounted on the lower end of the torch frame, and a split type wire nozzle is mounted on the inner side of the circular base to enable the elevating by a driving motor. The welding wire nozzle replacement apparatus, characterized in that the mounting is configured to be welded. The method of claim 1, wherein the wire nozzle 90 is a bolt and nut type, the lower end of the nozzle member 92 is formed with a male screw portion 94, the upper side of the male screw portion 94 is inserted into the female screw portion ( 96. A welding wire nozzle replacement apparatus according to claim 1, wherein the welding wire 154 is guided by a threaded elongation and a hole 98 is formed in the center thereof.