KR101533179B1 - Gas shielded arc welding apparatus - Google Patents

Abstract

A gas shielded arc welding apparatus (S) capable of easily adjusting a position of a torch includes electrode torches (10, 20) having electrodes, a torch (30) for a filler wire for supporting a filler wire (31) A torch clamp 45 for supporting the torch 10 and a torch 30 for the filler wire, a base 50 for supporting the torch clamp 45, (100). The welding apparatus S is configured to rotate the electrode torches 10 and 20 and the filler wire torch 30 by a predetermined angle to set the installation angles of the electrode torches 10 and 20 and the filler wire torch 30 respectively The electrode torches 10 and 20 and the filler wire torch 30 are moved in all directions to adjust the angle of the electrode torch 10 and 20 and the angle of the torch 30 for the filler wire And an adjustment mechanism (60) for adjusting the position of each position.

Description

[0001] GAS SHIELDED ARC WELDING APPARATUS [0002]

The present invention relates to a gas shield arc welding apparatus having a torch for an electrode and a torch for a filler wire.

When horizontally fillet welding a long steel material used in shipbuilding, bridges and the like, two electrodes are disposed on both sides of a standing plate and one molten pool is formed by these electrodes 2-electrode type gas-shielded arc welding is known (see, for example, Patent Document 1).

This two-electrode type gas-shielded arc welding has a high welding current and a high welding speed, so that high-speed welding can be performed twice or more as compared with a welding method in which one electrode is disposed on each side of the plate.

However, if the current value of the electrode is made higher than the predetermined value, the arc interference between the two poles is increased due to the influence of the magnetic field caused by the welding current of the leading and trailing poles.

For this reason, in the two-electrode type gas-shielded arc welding, the variation of the shape of the molten pool during welding becomes large, resulting in a problem of welding failure.

To solve such a problem, there has been proposed a gas-shielded arc welding method in which a filler wire for eliminating a magnetic field between the preceding electrode and a trailing electrode is disposed to perform welding (for example, refer to Patent Document 2) . By using such a method, variation in the shape of the dissolution pool can be suppressed to greatly reduce welding defects, thereby realizing welding that requires no modification.

It is preferable to set the welding conditions described in Patent Document 3 when welding the member to be welded more preferably by using the gas shielded arc welding method as in Patent Document 2 above. In order to set such a welding condition, the distance between the electrodes (hereinafter, referred to as " wire ends " hereinafter) fed from the entire torch is set at an extremely narrow distance equivalent to 15 mm to 50 mm, It is necessary to adjust the angle or the angle to an optimum condition in as short a time as possible. Such an adjustment requires extremely complicated adjustment as compared with the case of the two electrodes.

In a production line such as a shipbuilding or a bridge maker, when a welding operation satisfying such a demand is actually performed, the workpiece to be welded is slightly different in size, the workpiece is slightly displaced, And the position of the wire tip is changed each time it is operated by this upper part. For this reason, it is necessary to fine-tune the position of the wire front end of the whole wire every millimeter or less every time the welding operation is started, and the welding conditions change due to wind disturbance or the like, or the target position of the wire tip changes It is necessary to fine-tune the electrode while observing the arc state through the light-shielding glass.

Japanese Patent Application Laid-Open No. 1995-256455 Japanese Patent Laid-Open No. 2004-261839 Japanese Patent Application Laid-Open No. 2010-155281 Japanese Patent Application Laid-Open No. 1991-234367

However, in the automatic welding apparatus as described in Patent Document 4, when the welding conditions described in Patent Document 3 are set, it is preferable that a mechanism for only inserting the filler wire in the middle of the adjacent torch, It is necessary to set the optimum conditions such as the above-mentioned every time, and a great burden is imposed on the operator in order to perform the fine adjustment properly. In addition, in the case of failure, correction must be made, and productivity is greatly reduced. Therefore, there has been a problem that the position of the torch must be adjusted as easily as possible.

In view of the above problems, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a gas welding method and a welding method for welding a gas capable of adjusting the position of the torch with a complicated welding condition comprising filler wires for a plurality of electrodes, A shielded arc welding apparatus is provided.

In order to solve the above problems, a gas shielded arc welding apparatus according to the present invention comprises: a plurality of electrode torches having electrodes to which a current is supplied from a power supply device; A gas shielded arc welding apparatus comprising a torch for a wire, a torch clamp for respectively supporting the torch for the electrode and a torch for the filler wire, and a base for supporting the torch clamp, And an angle adjusting mechanism for adjusting the position of the electrode torch and the filler wire torch by moving the angle adjusting mechanism in the whole direction, And each of the position adjusting mechanisms for adjusting the position is provided.

Here, the overall direction is a direction perpendicular to the welding direction (hereinafter referred to as "abutting direction" or "X direction") and a vertical direction (hereinafter referred to as "Y direction" (Hereinafter referred to as " welding direction " or " Z direction ").

According to this configuration, the gas shielded arc welding apparatus has the angle adjusting mechanism to rotate the torch for the electrode and the torch for the filler wire by a predetermined angle, respectively, so that the torch angles of the torch for the electrode torch and the torch for the filler wire become Can be fine-tuned. Further, since the gas shielded arc welding apparatus is supported by the torch supporting mechanism having the position adjusting mechanism capable of adjusting the position by moving in the whole direction, when changing the leg length (leg length) of the torch in accordance with the portion to be welded of the member to be welded The position of each torch can be freely adjusted in all the directions of the up and down and right and left and front and back directions so that the positions of the electrode and the filler wire at the tip end are adjusted to a predetermined It is possible to easily adjust the position to the target position.

The position adjusting mechanism may further include a vertical positioning mechanism that can adjust the position by moving the respective torch clamps in the vertical direction and a horizontal positioning mechanism that can adjust the position by moving the respective torch clamps in the abutting direction .

According to such a configuration, the position adjustment mechanism of the gas shielded arc welding apparatus can adjust the position of the electrode in the vertical direction by moving the torch support mechanism in the vertical direction by the vertical positioning mechanism, and by the horizontal positioning mechanism The torch support mechanism can be moved in the abutting direction so that the position of the electrode in the abutting direction can be adjusted to match the portion to be welded of the member to be welded. Therefore, the position in the vertical direction and the facing direction can be easily adjusted by the vertical positioning mechanism and the horizontal positioning mechanism, respectively, so that even if the portion to be welded of the object to be welded is changed, it can be coped with immediately.

The vertical positioning mechanism includes a knob for rotating the knob, a feed screw member fixed to the knob, and a support plate portion rotatably inserted and supported by the feed screw member, And a slider to which the torch clamp is connected and slidably moved with respect to the fixing table in accordance with the rotation of the feed screw member, It is preferable that the knob is moved in the vertical direction together with the slider by rotating the knob.

According to such a configuration, the vertical positioning mechanism can continuously move the slider and the torch support mechanism with respect to the fixed table and the base, in accordance with the rotation of the knob, by rotating the knob to rotate the feed screw member interlockingly. Therefore, when it is necessary to finely adjust the position of the electrode in the vertical direction, the position of the electrode and the filler wire can be adjusted by moving the position of the electrode and the filler wire in the vertical direction in accordance with the portion to be welded of the member to be welded.

The horizontal positioning mechanism may include a guide member having a knob for rotatable operation, a feed screw member fixed to the knob, and a support plate portion rotatably inserted and supported by the feed screw member, And a slider to which the torch clamp is connected and which slides with respect to the guide member in accordance with the rotation of the feed screw member and is connected to the male threaded portion, To move in the direction of abutting with the slider.

According to this configuration, the horizontal positioning mechanism can continuously move the slider and the torch support mechanism with respect to the base in accordance with the rotation of the feed screw member by rotating the knob while rotating the knob. Therefore, when it is necessary to finely adjust the position of the electrode in the butting direction, the position of the electrode and the filler wire can be adjusted by moving the position of the electrode and the filler wire in the abutting direction of the welded member.

It is preferable that the base is provided with a long hole for inserting a fastener for fixing the fixing table to the base so as to be movable along the plate surface of the base so as to be movable in the welding direction.

According to this configuration, the position of each torch clamp, the electrode, and the filler wire moving together with the fixing table is adjusted in the welding direction by adjusting the position of the fixing tool inserted into the long hole of the plate surface of the base. Can be adjusted.

The angle adjusting mechanism may further include a torch clamp mounting stay provided adjacent to the torch clamp, a shaft member inserted into a shaft insertion hole formed in the torch clamp mounting stay, and an arc- And a torch clamp support member which is inserted into the torch clamp by inserting a hole therethrough. The torch clamp support member adjusts a vertical angle of the angle adjusting mechanism by loosening the fastening state of the torch clamp support member It is preferable to be provided.

According to such a configuration, the angle adjusting mechanism of the gas shielded arc welding apparatus is configured such that by loosening the fastening state of the torch clamp support member engaged with the torch clamp for holding the torch for the electrode and the torch for the filler wire, The angle of the direction can be adjusted along the long hole of the arc shape. Thereby, the gas shielded arc welding apparatus can freely adjust the angle of the torch for the electrode and the torch for the filler wire in the vertical direction, and finely adjust the direction thereof in an appropriate direction.

The electrode torch mounted on the position adjusting mechanism is composed of a curved torch bent from the supporting portion supported by the torch clamp toward the tip of the electrode torch so that each of the torch clamps is loosened It is preferable that the forward angle and the backward angle with respect to the welded portion can be adjusted by adjusting the rotation around the axis.

According to such a configuration, the electrode torch is made of a curved torch formed by curving from the supporting portion toward the front end, so that when each torch clamp is loosened and rotated around the axis, the center line of the supporting portion held by the torch clamp It is easy to freely adjust the advancing angle and the retracting angle of the electrode torch with respect to the welded portion at an appropriate angle.

Each of the torch clamps of the gas shielded arc welding apparatus includes a retaining hole for rotatably inserting the torch for the electrode and the torch for the filler wire in a rotatable manner, a notch formed in the retaining hole, And a fastening member screwed into the screw hole and adjusting an interval between inner walls of the notched groove, wherein the fastening member loosens the fastening force of the screw hole, It is preferable that the electrode torch and the filler wire torch are respectively held by rotating the torch for the electrode and the torch for the filler wire in the circumferential direction and by strengthening the fastening force of the screw hole.

According to this configuration, when the fastening force of the threaded screw hole is loosened, the inner diameter of the holding hole for holding each torch becomes larger as the inner wall of the notched groove becomes wider, The torch for the filler wire can be rotated in the circumferential direction, respectively. Each torch rotates about the center line of the holding hole, so that the direction of the electrode at the tip of the torch can be adjusted.

In addition, since the fastening force of the screw holes is made stronger in the fastening member, the inner diameter of the holding hole is reduced in diameter as the notch groove interval is narrowed, so that each torch can be strongly and firmly held.

The base includes a lifting and lowering device for lifting the base, an abutting direction moving device for moving the base in the abutting direction, and an electric motor for driving the electrode torch and the filler wire torch, It is preferable that the positioning dog portion for determining the butting position and the vertical position of the positioning dog.

According to this configuration, in the gas shielded arc welding apparatus, the positioning dog portion adjusts the position of the base by the elevating device and the mating direction moving device, so that the abutting position and the vertical position of the torch for the electrode torch and the filler wire, It can be determined imitating in accordance with the position. Therefore, even if the portion to be welded of the workpiece to be welded is changed, it can be easily handled.

In addition, it is preferable that the gas shielded arc welding apparatus welds the base while moving the torch for the electrode and the torch for the filler wire by the moving device.

According to this configuration, the gas shielded arc welding apparatus can perform welding while moving the base along the welding line by the moving device.

It is also preferable that the gas shielded arc welding apparatus welds the workpiece to the base while moving the workpiece by the moving device.

According to this configuration, the gas shielded arc welding apparatus can perform welding while moving the member to be welded by the moving device.

According to the gas shielded arc welding apparatus of the present invention, the electrode torch and the torch for the filler wire are rotated in the entire direction including the welding direction, the vertical direction, the facing direction, and the desired direction, Or a welding apparatus equipped with a filler wire for a plurality of electrodes by appropriately adjusting the torch angle can easily adjust the welding conditions under optimum conditions.

By such a mechanism, it is possible to form a good weld bead by setting the welding conditions to be optimal and fine adjustment at the time of starting welding work and welding work, and at the same time, it is possible to improve the stability of generated arc and suppress the generation of spatter .

In addition, the burden on the operator for performing the fine adjustment of the position of the torch or the like can be extremely reduced.

Further, it is free from the burden of work such as correction of welding defect, and the productivity can be greatly improved.

1 is a schematic perspective view showing Embodiment 1 of a welding apparatus according to the present invention,
Fig. 2 is a schematic perspective view showing the head unit device of Embodiment 1 of the welding apparatus according to the present invention, Fig.
3 is a schematic plan view of a welding head according to Embodiment 1 of the welding apparatus according to the present invention,
4 is a schematic right side view of the welding head portion of Embodiment 1 of the welding apparatus according to the present invention,
5 is a schematic perspective view of a welding head according to Embodiment 1 of the welding apparatus according to the present invention,
6 is a schematic front view showing a vertical positioning mechanism of Embodiment 1 of a welding apparatus according to the present invention,
7 is a schematic front view showing the horizontal positioning mechanism of Embodiment 1 of the welding apparatus according to the present invention,
Fig. 8 is a view showing the angle adjusting mechanism of Embodiment 1 of the welding apparatus according to the present invention, wherein (a) is a schematic perspective view, (b) is a longitudinal cross-
Fig. 9 is a view showing a clamping mechanism for a filler wire torch according to Embodiment 1 of the welding apparatus according to the present invention and a pillar wire torch position adjusting mechanism, wherein (a) is a schematic perspective view seen from the front direction, Fig.
10 is a schematic side view showing a torch supporting mechanism for a filler wire according to Embodiment 1 of a welding apparatus according to the present invention,
Fig. 11 is a plan view showing a positioning dog portion according to the first embodiment of the welding apparatus according to the present invention, Fig. 11 (b)
Fig. 12 is a schematic view showing a main part of a welding apparatus according to a second embodiment of the present invention, showing a state in which welding is performed while moving the workpiece to be welded to a moving device. Fig.

[Embodiment 1]

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

As shown in Figs. 1 and 2, in this embodiment, first, a lower plate 2 horizontally installed as an example of a welding apparatus S, a plate 3 disposed vertically on the upper surface of the lower plate 2, A so-called line welder (not shown) for performing fillet welding while moving the welding head portion 4 (welding machine, see FIG. 2) to the corner portion of the workpiece 1 along the welded portion 1a with the moving device 100 ) Will be described as an example.

Here, the X direction is a horizontal direction vertical direction orthogonal to the welding direction, the Y direction vertical direction vertical direction, and the Z direction welding direction.

≪ Configuration of welding apparatus >

As shown in Figs. 1 and 2, the welding apparatus S includes a lower plate 2 as a member to be welded 1 and a plate 3 as a welding head (welding line) along a welded portion 1a 4) is moved while welding. The welding apparatus S includes a moving device 100, a control panel 400, an operation panel 410, a dust collector 500, a wire receiver 600, a welding power source, a cooling water supplying device, (Not shown), and a welding head 4 (welding machine).

≪ Configuration of Welded Member &

As shown in Fig. 1, the workpieces 1 to be welded are, for example, large structures used for ships, bridges, etc., for example, a lower plate 2 and a plate 3. The workpieces 1 to be welded are welded to each other by welding the portions to be welded so that the lower plate 2 and the plate 3 are perpendicular to each other. A welding head 4 (see FIG. 2) described later is disposed on the welded portion 1a (welding line) to be welded, and the welding head portion 4 is welded to the welded portion (1a).

≪ Configuration of mobile device &

2, the moving apparatus 100 is configured to move the welding head 4 (welding machine) in the welding direction (Z direction), the butting direction (X direction orthogonal to the welding direction) and the vertical direction (Y direction) As shown in Fig. The moving apparatus 100 includes, for example, a welding direction moving apparatus 110 (see FIG. 1), a head unit apparatus 200, a vertical moving cylinder 270, and a welding head moving apparatus 80 .

≪ Configuration of Welding Direction Moving Device >

The welding direction moving device 110 shown in Fig. 1 is a carrying device for moving a plurality of welding head portions 4 (see Fig. 2) of the welding device S arranged on the back side of the welding direction moving device 110 in the welding direction. The welding direction moving device 110 includes a pair of rails 150, a traveling roller 120, a traveling motor 130, and a mount frame 140. The welding direction moving device 110 rotates the traveling motor 130 so that each welding head 4 moves together with the base 50 in the welding direction and welding is performed.

The rail 150 is a pair of left and right running guide rails made of, for example, I-shaped steel, and is provided along a plurality of workpieces 1 laid on the floor surface of the welding facility.

The traveling roller 120 is a wheel that moves the base frame 140 in the welding direction by rolling over each of the rails 150 and is disposed at a plurality of lower ends of the base frame 140.

The traveling motor 130 is a driving source that rotatably drives the traveling rollers 120 and is driven by supplying a current from a power source (not shown) via a control panel 400. The traveling motor 130 is driven by a traveling- (120).

The base frame 140 is composed of, for example, a door frame arranged so as to hang the member 1 to be welded. The base frame 140 includes a pair of left and right vertical legs 141, And an installed deck 142 is provided. A driving roller 120, a traveling motor 130, a head unit device 200, a control panel 400, a dust collector 500, a wire receiver 600, and the like are mounted on the base frame 140.

≪ Configuration of head unit device >

2, the head unit device 200 is an arcuate device for moving the welding head portion 4 in the abutting direction, for example, along the base frame 140 (see Fig. 1) Lt; / RTI > The head unit 200 includes a stanchion 210 (see FIG. 1), a horizontal guide 220, a sliding plate 230, a fixed frame 240, a vertical frame 250, A head unit transverse motion motor 260, an up / down cylinder 270, a right welding head upper / lower cylinder 81, a left welding head upper / lower cylinder 82, and an operation panel 410 .

As shown in Fig. 1, the stance 210 is provided with a wire receiver 600 for holding a welding wire which is to be a leading electrode 11 (see Fig. 2) and a trailing electrode 21, It is an arched topping frame. The stance 210 is provided with a column frame 211, a hypothetical frame 212 and a hanging tool 213.

The column frame 211 is a pair of left and right column members which are installed in the base frame 140 and move together.

The hypothetical frame 212 is a member in which a plurality of water collecting openings 213 are suspended at appropriate intervals and is suspended at the upper end portion between the two column frames 211.

The water outlet 213 is a member for supporting the wire receptacle 600 in a suspended manner, and is supported in a suspended manner in the temporary frame 212.

2, the transverse direction guide 220 is a frame member that is installed on the deck 142 and extends in the left and right direction, and has a pair of travel guide portions 220a extending in the butting direction. This transverse direction guide 220 is hung against the stance 210 toward the abutting direction.

The sliding plate 230 is a member that is guided by the travel guide portion 220a and slidably moves in the mating direction, and has a coupling portion (not shown) coupled to the travel guide portion 220a. The sliding plate 230 is slidably provided in the transverse direction guide 220 in the transverse direction.

The fixed frame 240 is a frame-shaped frame extending in the vertical direction, fixed to the sliding plate 230, and vertically movable by the up / down cylinder 270.

2, the upper and lower frame 250 is a frame for holding the welding head 4 and the operation panel 410, and is vertically movable with respect to the stationary frame 240 by the cylinder 270 for vertical movement Lt; / RTI > Like the fixed frame 240, the vertical frame 250 includes a rectangular frame-shaped frame extending in the vertical direction, and is opposed to the fixed frame 240. A welding head moving device 80 for moving the base 50 in X, Y and Z directions is provided between the upper and lower frame 250 and the welding head 4.

Since two welding heads 4 are arranged symmetrically in each of the upper and lower frames 250, the welding head 4 on the right side will be described below. It is omitted.

The head unit transverse motor 260 is a motor driving device for moving the left and right welding head portions 4 in the lateral direction by running the fixed frame 240 and is provided on the stationary frame 240.

The vertical cylinder 270 is a device for vertically moving the vertical frame 250 along the horizontal guide 220 and the sliding plate 230 to the fixed frame 240 via the vertical direction guides 280. For example, For example, an air cylinder device. The upper and lower cylinder 270 has a cylinder 271 connected to the lower central portion of the upper end of the frame-shaped upper and lower frame 250 and an upper end movable up and down in the cylinder 271. A lower end of the cylinder 271 is connected to the sliding plate 230 And has a fixed piston rod 272.

≪ Configuration of the welding head moving device >

2, the welding head moving device 80 includes the welding direction moving device 110 (see FIG. 1), the head unit device 200 (see FIG. 1), and the vertical moving cylinder 270 The position of the welding head portion 4 is adjusted by moving the welding head portion 4 in the X, Y and Z directions by a short distance. The welding head moving device 80 includes a cylinder 81 for vertically moving the right welding head portion, a cylinder 82 for vertically moving the left welding head portion, and an air cylinder 83 for abutting.

2, the cylinder 81 for vertically moving the welding head of the right side is provided with a device (not shown) for moving the right welding head 4 disposed on the right side of the vertical movement frame 250 in the vertical direction (Y direction) And is fixed to the right frame of the rectangular frame-shaped upper and lower frame 250.

The left and right welding head cylinder for vertical movement 82 is a cylinder device for moving the left welding head 4 disposed in the left side of the vertical frame 250 in the vertical direction (Y direction) And is fixed to the left frame of the vertical frame 250.

The abutting air cylinder 83 (abutting direction moving device) is a device for moving the entire welding head 4 together with the base 50 in the abutting direction (X direction). This abutting air cylinder 83 includes a cylinder 83a which is fixed to the base 50 and moves forward and backward by the compressed air supplied to the inside thereof and a cylinder 83a having one end disposed in the cylinder 83a, A connecting frame 83c connected to the upper and lower frame 250 and a pair of upper and lower pairs of sliders 83d extending in the direction of abutment against the side of the cylinder 83a in the welding direction A guide rail 83e for guiding the movement of the cylinder 83a in the abutting direction and a guide rail 83e for guiding the movement of the cylinder 83a in the right and left welding head upper and lower cylinders 81, And a retaining plate 83f for fixing to the side surface of the support plate 83f.

The operation panel 410 is operated by operating the head unit transverse motor 260, the up / down cylinder 270, the welding head moving device 80, the welding power supply, the cooling water supply device and the shield gas supply device (not shown) And is mounted on the upper and lower frame 250. The upper and lower frames 250 and 250 are mounted on the upper and lower frames 250 and 250, respectively.

The power source (not shown) includes a welding power supply (power supply device) for supplying electric power to each electrode part of the leading electrode 11 and the trailing electrode 21 of the welding apparatus S shown in Fig. 2, And a power source for supplying electric power to the driving source of the head unit transverse motor 260, and is installed at a predetermined position, for example, inside the floor of the welding direction moving device 110 .

The same applies to the cooling water supply device and the shield gas supply device not shown.

≪ Construction of welding head portion &

2, the welding head 4 (welding machine) includes a leading electrode torch 10, a trailing electrode torch 20 and a filler wire torch 30, and torches 10, 20 And a torch clamping mechanism 40 for supporting the torches 10, 20 and 30 and a welding power source (not shown) for supplying current to the torches 10, A base 50 and a welding head moving device 80 for moving the welding head 4 such as the base 50.

The entire welding head 4 can be moved largely in the X, Y and Z directions by the welding direction moving device 110 (see FIG. 1), the head unit device 200 and the vertical moving cylinder 270, The welding head moving device 80 can be moved in the X and Y directions with a small amount and the position adjusting mechanism 60 can move the leading electrode torch 10, the trailing electrode torch 20, So that the filler wire torch 30 can be moved in the X, Y, and Z directions.

The welding head 4 performs gas shield arc welding while traveling to the welding direction moving device 110 and is configured to supply current to the torches 10, 20 and 30, Since the construction of the known gas shield arc welding apparatus is used, detailed description thereof will be omitted.

3 and 4, each of the welding head portions 4 in which the torches 10, 20, and 30 are disposed has the leading electrode 11, the trailing electrode 21, and the filler wire 31 The position and angle in the X, Y, and Z directions can be finely adjusted on the base 50 via the torch clamp mechanism 40 having the angle adjusting mechanism 44 and the position adjusting mechanism 60 Respectively.

5, the electrode torches 10 and 20 are provided with bent portions 10a and 20a extending from the supporting portions supported by the respective torch clamps 45 toward the tips of the electrode torches 10 and 20 The torch clamps 45 are each made of a curved torch formed to be curved so as to be loosened and adjusted to rotate around the axis so as to easily adjust the advancing angle and the retracting angle with respect to the welded portion 1a It is possible.

≪ Configuration of Torch Clamp Mechanism >

The torch clamping mechanism 40 is a supporting mechanism for supporting the leading electrode torch 10, the trailing electrode torch 20 and the pillar wire torch 30 respectively. The torch clamping mechanism 40 includes a leading electrode torch clamping mechanism 40A, A torch clamping mechanism 40B for the trailing electrode supporting the torch 20 for the trailing electrode and a clamping mechanism 40C for the pillar wire torch for supporting the torch 30 for the pillar wire. The torch clamping mechanism 40A for the leading electrode and the torch clamping mechanism 40B for the trailing electrode are symmetrical and therefore the torch clamping mechanism 40A for the leading electrode will be mainly described and the torch clamping mechanism for the trailing electrode 40B, Will be appropriately omitted.

5, the leading electrode torch clamping mechanism 40A is a supporting mechanism for detachably supporting the leading electrode torch 10 and includes a torch clamp 45 to be described later, a torch- A shaft member 47, a torch clamp support member 48, a support bracket 49, a fastening member T1, and an angle adjusting mechanism 44. As shown in Fig.

8 (a) and 8 (b), each torch clamp 45 is a member for supporting the leading electrode torch 10 and the trailing electrode torch 20, respectively. Each of the torch clamps 45 is formed with a holding hole 45a, a notch 45b, a screw hole 45c, a protruding piece 45d, and a fixed female threaded portion 45e.

The holding hole 45a is a hole through which the torches 10 and 20 are rotatably inserted in the circumferential direction via the insulating bushes 9 and the notched groove 45b is formed on the outer periphery. And is formed in a substantially C shape.

The cutout groove 45b is formed by cutting off the outer peripheral portion of the torch clamp 45 from the holding hole 45a and is formed by a pair of projecting pieces 45d arranged at predetermined gap intervals.

The threaded hole 45c is a hole into which a fastening member T1 for fastening state adjustment formed perpendicularly to the cutout groove 45b is screwed. The diameter of the holding hole 45a and the distance between the cutout grooves 45b between the pair of projecting pieces 45d are adjusted by screwing the fastening member T1 into the screw hole 45c, Is formed in the projecting piece 45d so that the fastening force of the holding hole 45a for holding the welding torch 10 is adjusted.

The protruding piece 45d is formed of a pair of thick plate-like pieces having a notch groove 45b and a screw hole 45c. The protruding pieces 45d are formed such that the distance between the protrusions 45d and 45d becomes narrow when the fastening member T1 is strongly screwed to the screw hole 45c, So that the torch clamp 45 is firmly clamped. When the fastening member T1 is loosened, the fastening force for fastening the lead electrode torch 10 with the inner diameter of the retaining hole 45a weakens, and the lead electrode torch 10 is rotated about the center line of the retaining hole 45a And the projecting length of the leading electrode torch 10 from the torch clamp 45 is adjusted or pulled out by rotating it in the circumferential direction (the direction of the arrow (b) It becomes possible.

The fixed female screw portion 45e is a portion where the male screw portion of the tip portion of the torch clamp support 48 to which the torch clamp mounting stay 46 is fixed to the torch clamp 45 is screwed.

The torch clamp mounting stay 46 is a support plate member for rotatably supporting the torch clamp 45 only by the length in the circumferential direction of the arc-shaped long hole 46b about the shaft member insertion hole 46a, And is provided adjacent to the torch clamp 45. The lower end of the torch clamp mounting stay 46 is connected to the slider 67 by the fastening member T2 and is movable in the X and Y directions together.

The shaft member 47 is screwed to the fixed female threaded portion 45e of the torch clamp 45 by inserting the torch clamp support 48 through the long adjustment hole 49a in the vertical direction of the support bracket 49 And a torch clamp 45 which is rotatable around the axis shaft member 47 when the torch clamp 45 is rotatable with respect to the torch clamp mounting stay 46. [ The shaft member 47 is inserted into the shaft member insertion hole 46a formed in the torch clamp mounting stay 46. [

The torch clamp support member 48 is a screw member whose tip is screwed to the fixed female threaded portion 45e via the adjustment hole 49a and the circular long hole 46b and the rotation of the torch clamp 45 is regulated A pair of left and right members. The pair of torch clamp support members 48 are inserted into the arcuate elongated holes 46b formed in the torch clamp mounting stand 46. [

The support bracket 49 is a metal rear plate member having a pair of vertically elongated right and left adjustment holes 49a into which the two torch clamp supports 48 are inserted respectively so as to cover the circular long holes 46b .

The fastening member T1 is an adjusting screw member for adjusting the fastening force of the torch clamp 45 by the holding hole 45a by adjusting the clearance between the cutout grooves 45b and is made of, for example, two screw members.

<Configuration of Angle Adjustment Mechanism>

8 (a) and 8 (b), the angle adjusting mechanism 44 is a mechanism for adjusting the installation angle of the lead electrode torch 10 by rotating the lead electrode torch 10 by a predetermined angle . The angle adjusting mechanism 44 can rotate the lead electrode torch 10 in the vertical direction (Y direction) around the shaft member 47 so as to adjust the direction of the leading electrode 11 in the vertical direction have.

The angle adjusting mechanism 44 includes a torch clamp mounting stay 46 provided adjacent to and connected to the torch clamp 45 and a shaft member inserted into the shaft member insertion hole 46a formed in the torch clamp mounting stay 46 And a torch clamp support member 48 which is inserted into an elongated circular hole 46b formed in the torch clamp mounting stay 46 and is fastened to the torch clamp 45. [

Therefore, the shaft member 47 and the torch clamp support member 48 are provided with an angle adjusting mechanism for adjusting the angle of the leading electrode 11 in the vertical direction by loosening the fastening state of the fastening member to be fastened to the torch clamp 45 (44).

9 (b) and Fig. 10, the angle adjusting mechanism 44 also has an arc-shaped long hole in the clamping mechanism 40C for the filler wire torch of the torch 30 for the filler wire The same angle adjusting mechanism 44 is used. Therefore, the description thereof will be omitted.

&Lt; Configuration of position adjusting mechanism &

As shown in Figs. 3 and 4, the position adjusting mechanism 60 includes a lead electrode 10, a trailing electrode torch 20, and a filler wire torch 30 (see Fig. 9) 20, and 30, respectively, of the torches 10, 20, and 30, respectively. The position adjusting mechanism 60 includes a leading electrode torch position adjusting mechanism 60A for adjusting the position of the leading electrode torch 10 and a trailing electrode torch position adjusting mechanism for adjusting the position of the trailing electrode torch 20 And a filler wire torch position adjusting mechanism 60C for adjusting the position of the torch 30 for the filler wire. The leading electrode torch position adjusting mechanism 60A, the trailing electrode torch position adjusting mechanism 60B and the filler wire torch position adjusting mechanism 60C move the respective torch clamps 45 and 45C in the vertical direction (Y direction) 6 in which the position can be adjusted and a horizontal positioning mechanism 62 (see FIG. 7) in which the position can be adjusted by moving the respective torch clamps 45 in the abutting direction (X direction) , 61C (see Fig. 9).

&Lt; Configuration of Vertical Positioning Mechanism &gt;

3 and 6, the vertical positioning mechanism 61 of the preceding electrode torch position adjusting mechanism 60A (position adjusting mechanism 60) is provided with a knob 64, which will be described later, A fixing table 66, a slider 67 (vertical slider 67Y), and a fastening member T5. The vertical positioning mechanism 61 causes each of the torches 10, 20 and 30 to rotate the knob 64 so that the vertical slider 67Y is moved vertically (in the Y direction The horizontal slider 67X, the torch clamp mounting stay 46 and the torch clamp (not shown) together with the left and right guide portions 69a of the horizontal positioning mechanism 62 connected to the vertical slider 67Y 45 and the respective torches 10, 20, 30 are moved integrally with respect to the vertical direction so that the torches 10, 20, 30 can be moved and adjusted in the vertical direction.

As shown in Fig. 6, the knob 64 is a knob for turning the leading electrode torch 10 in the vertical direction with respect to the base 50.

The feed screw member 65 is a member having a screw thread shape that rotates integrally by rotating the knob 64. The feed screw member 65 has a vertical slider 67Y threadably engaged with the central slider 67Y, 66 supported on the upper and lower guide portions 66a.

The fixing table 66 is a member having a substantially groove-shaped steel shape as viewed from the front with an upper and lower guide portion 66a (supporting plate portion). The fixing table 66 has a fastener T3 inserted into the long hole 50a of the base 50, Is screwed into a female screw portion 66d formed on the lower plate portion of the upper and lower guide portion 66a to fix it on the base 50. [ The fixing table 66 has a pair of right and left guide shafts 66c which are inserted through the vertical slider 67Y to support the vertical slider 67Y in a slidable manner.

The slider 67 has a female screw portion 67Yb which is screwed to the male screw portion 65a formed on the feed screw member 65. The slider 67 is provided between the upper and lower guide portions 66a and 66a As shown in Fig. The slider 67 includes a vertical slider 67Y movable in the vertical direction and a guide member 69 supporting the horizontal slider 67X movable in the mating direction And they move together in a vertical direction with respect to the fixing table 66. [

The fastener T3 is a bolt for adjusting the position of the welding direction positioning mechanism 60D to be described later.

The fastening member T5 is a bolt for fixing the guide member 69 of the horizontal positioning mechanism 62 to the vertical slider portion 67Y of the vertical positioning mechanism 61 as described above.

&Lt; Configuration of Horizontal Positioning Mechanism &gt;

7, the horizontal positioning mechanism 62 of the preceding electrode torch position adjusting mechanism 60A (position adjusting mechanism 60) is provided with a knob 63 to be described later, a feed screw member 68 A horizontal slider 67X of the slider 67, a guide member 69, and a fastening member T2. Each of the torches 10, 20 and 30 is rotated by the horizontal positioning mechanism 62 so that the horizontal slider 67X is moved in the butting direction (X direction) through the feed screw member 68 by rotating the knob 63 The torch clamp 45 and the respective torches 10, 20 and 30 are integrally moved with respect to the abutting direction together with the torch clamp mounting stay 46 connected to the horizontal slider 67X so that the torch clamp 45 and the torches 10, So that it can be moved and adjusted.

The knob 63 is a rotary knob for moving the forward electrode torch 10 in the direction of abutting against the base 50.

The feed screw member 68 is a screw rod member that rotates integrally by rotating the knob 63. The horizontal slide member 67X is screwed so that the horizontal slider 67X is movable forward and backward, And is cantileverably supported on the left and right guide portions 69a of the guide portion 69.

The horizontal slider portion 67X of the slider 67 is provided with a pair of right and left guide portions 69a for rotatably pivotally supporting the feed screw member 68 and a male screw portion 68a formed on the feed screw member 68 And has a female screw portion 67Xb and slides horizontally in the abutting direction (X direction) in accordance with the rotation of the feed screw member 68. [

The guide member 69 is a member having a substantially trough-shaped steel shape in plan view and is inserted into the horizontal slider portion 67X so that the horizontal slider portion 67X can be slidably supported by a pair of upper and lower guide shafts (69c). The outer side surface of the guide member 69 is fixed to four spot holes formed from the inner side wall surface of the guide member 69 toward the vertical slider 67Y side as shown in Fig. Is screwed and bolted in a state of being in contact with the side surface of the vertical slider portion 67Y.

The fastening member T2 is a bolt for screwing the slider 67 from the side surface of the torch clamp mounting stay 46 and connecting the torch clamp mounting stay 46 and the slider 67 to each other.

<Construction of Clamp Mechanism for Filler Wire Torch>

The pillar wire torch 30 shown in Figs. 9 to 10 is provided with a clamping mechanism 40C for a pillar wire torch which is substantially the same as the torch clamping mechanism 40A for a preceding electrode provided in the preceding electrode torch 10, And an angle adjusting mechanism 44 are provided.

<Configuration of Filler Wire Torch Position Adjusting Mechanism>

9 to 10, the filler wire torch position adjusting mechanism 60C includes a filler wire torch 30, like the preceding electrode torch position adjusting mechanism 60A of the preceding electrode torch 10, The vertical positioning mechanism 61 is provided with a mechanism equivalent to the vertical positioning mechanism 61. The vertical positioning mechanism 61 includes a horizontal positioning mechanism 61C for horizontally aligning the torches 30 It is different in that it does not. That is, the filler wire torch position adjusting mechanism 60C slides the slider 67C in the welding direction (Z direction) by rotating the knob 63C, thereby moving the torch clamp 45C in the abutting direction c) direction] to adjust the position.

Like the preceding electrode torch position adjusting mechanism 60A, the filler wire torch position adjusting mechanism 60C includes a knob 63C, a feed screw member 65C, a fixing table 66C and a slider 67C, (50). The height of the pillar wire torch position adjusting mechanism 60C in the vertical direction can be adjusted by interposing a spacer (not shown) having an appropriate thickness between the base 50 and the fixing table 66C.

There is only one knob 63C for moving the torch 30 for the filler wire.

The feed screw member 65C is supported by a support plate portion 66Ca provided on the fixing table 66C and horizontally arranged with respect to the base 50. [

The fixed table 66C includes a support plate 66Ca for holding both ends of a guide shaft 66c extending toward the abutting direction X direction and a side plate 66C having a sliding surface 66Ce for sliding the slider 67C, And is bolted to a predetermined position on the base 50. As shown in Fig.

The slider 67C slides on the horizontal sliding surface 66Ce in the horizontal direction (the direction of the arrow c) in accordance with the rotation of the feed screw member 65C by the turning operation of the knob 63C, And moves the clamp 45C in the abutting direction (X direction).

«Configuration of base»

4, the base 50 is fixed to the fixing legs 66 and 66C of the preceding electrode torch position adjusting mechanism 60A, the trailing electrode torch position adjusting mechanism 60B and the filler wire torch position adjusting mechanism 60C, Respectively, and is made of a thick plate metal. A fastener T3 of a welding direction position adjusting mechanism 60D for fixing the fixing tables 66 and 66C to predetermined positions in the welding direction is inserted into the base 50 so as to be movable along the plate surface of the base 50 A plurality of elongated holes 50a (see Fig. 2) are formed. The base 50 is provided with a cylinder 81 for vertically moving the right welding head portion (elevating device) (see FIG. 2) for raising and lowering the base 50, A positioning dog unit (a moving device) not shown in the drawing and an air cylinder (moving apparatus) not shown in the drawing and an positioning dog unit 70 are bolted together.

&Lt; Configuration of Welding Direction Positioning Mechanism &

11, the welding direction position adjusting mechanism 60D horizontally moves the fixing rods 66 and 66C mounted on the base 50 in the welding direction, thereby moving the torch 10 for the preceding electrode, (20), and the position of the torch (30) for the filler wire are adjusted and fixed to predetermined positions in the respective welding directions. The welding direction position adjustment mechanism 60D includes an internally threaded portion 66d formed on the fixing bases 66 and 66C and an elongated hole 50a formed in the base 50 in the welding direction and welded to the elongated hole 50a (See Fig. 10) of the fixing legs 66 and 66C (see Fig. 10) so as to be finely adjustable in the direction of the fixing screws 66 and 66C and fix the fixing legs 66 and 66C at predetermined positions And a sphere T3.

&Lt; Configuration of positioning dog part &

3 and 4, the positioning dog unit 70 includes an electrode torch 10, 20 mounted on a base 50 and a torch 30 for a filler wire, In the horizontal direction and the vertical direction. The positioning dog unit 70 includes a cylinder 81 for vertically moving the right welding head portion (see FIG. 2) (elevating device), an abutting air cylinder 83 for moving the base 50 in the abutting direction And can adjust its position together with the base 50 by a moving device). Therefore, when the positions of the torches 10, 20, 30 with respect to the workpiece 1 are initially adjusted, the positioning dog unit 70 can determine the distance in the facing direction, The position can be easily determined.

As shown in Figs. 11 (a) and 11 (b), the positioning dog portion 70 is of a substantially rectangular plate shape fixed on the lower surface of the base 50 with a fastening member T4. The positioning dog portion 70 is a long member 71 fixed to the base 50 in a horizontal state. Further, a sensor for detecting the proximity distance of the workpiece 1 may be provided.

«Operation of welding apparatus»

Next, the operation of the welding apparatus S will be described with reference to Figs. 1 to 12. Fig.

1, first, the lower plate 2 of the member to be welded 1 is fastened between the legs 141, 141 of the mounting frame 140 by rails 150 And the plate 3 is mounted at a predetermined position on the lower plate 2 and fixed.

Next, the welding head portion 4 shown in Fig. 2 is transferred to the head unit device 200 up to the vicinity of the welded portion 1a. Then, the welding head portion 4 is transferred to the vicinity of the height of the welded portion 1a by the cylinder 270 for vertical movement.

The fastening member T1 of the torch clamp 45 shown in Figs. 8A and 8B is temporarily loosened and the leading electrode torch 10 (The direction of arrow (a)) and the direction of the axis (direction of arrow (b)) of the trailing electrode torch 20 (the trailing electrode torch 20).

In this case, the leading electrode torch 10 is formed of a curved torch whose bent portion 10a is bent in a curved or curved shape. When the torch is rotated, the leading electrode 11 is held in the holding hole 45a, It is possible to adjust the advancing angle and the retracting angle of the leading electrode 11 with respect to the welded portion 1a with respect to the center line of the leading electrode 11 by rotating in the circumferential direction (the direction of arrow (b)).

Next, the shaft member 47 of the torch clamp 45 and the torch clamp support 48 are temporarily loosened, and the leading electrode torch 10 [ (The forward electrode torch 20) is adjusted to an appropriate angle in the vertical direction (Y direction).

In the same manner, the adjustment of the position of the torch 30 for the filler wire in the axial direction and the axis peripheral direction and the adjustment of the vertical direction Y (Y) of the leading electrode torch 10 to the welded portion 1a of the welded member 1 Direction) at an appropriate angle.

3 and 7, by turning the knob 63 of the horizontal positioning mechanism 62 to rotate the feed screw member 68, the torch clamp 45 and the torch clamp 45 are integrally formed (X direction) of the leading electrode torch 10 is fine-tuned by moving the horizontal slider portion 67X moving to the front electrode torch 10 in the butting direction.

4 to 6, by rotating the knob 64 of the vertical positioning mechanism 61 to rotate the feed screw member 65, the knob 64 of the vertical positioning mechanism 61 is rotated integrally with the torch clamp 45 The moving vertical slider 67Y is moved in the vertical direction (Y direction) to fine-tune the position of the leading electrode torch 10 in the vertical direction.

In the same manner as described above, the positions of the trailing electrode torch 20 in the vertical direction and the facing direction are fine-tuned.

9 and 10, the torch 30 for pillar wire is rotated integrally with the torch clamp 45C by rotating the feed screw member 65C by rotating the knob 63C (In the direction of the arrow c) so as to fine-tune the position of the torch 30 for the filler wire in the horizontal direction.

11, the fastening force of the fastening tool T3 of the welding direction position adjusting mechanism 60D is loosened to adjust the position of each torch 10, 20, 30 in the welding direction, (66, 66C) in the welding direction.

As described above, the welding apparatus S includes the knobs 63 and 64 of the vertical positioning mechanism 61 and the horizontal positioning mechanism 62, the knob 63 of the filler wire torch position adjusting mechanism 60C, By rotating the fastener T3 of the direction position adjusting mechanism 60D, the shaft member 47 of the angle adjusting mechanism 44 and the torch clamp support 48, the torches 10, 20, It can be moved in the entire direction including the welding direction, the vertical direction, and the abutting direction before and after the up and down, left, and right, or it can be rotated in the desired direction. This makes it possible to adjust easily the optimum welding conditions even if the apparatus has the filler wires 31 on a plurality of electrodes by appropriately adjusting the distance between the electrodes of the torches 10, 20 and 30 and the torch angle . In this case, since the knobs 63, 64, and 63C are easy to rotate, the positions of the torches 10, 20, and 30 can be easily adjusted to optimal welding conditions even at the time of starting welding work and welding work . As a result, when welding the member 1 to be welded, a good bead can be formed, and the stability of generated arc can be improved, and the occurrence of spatter can be suppressed.

As described above, the torch 10, 20, and 30 are positioned in appropriate positions, angles, and directions, and the welding head 4 is moved by the welding direction moving device 110 to the pit of the welded member 1 By moving along the welded portion 1a, it is possible to run in a stable state and weld without occurrence of weld defect.

Therefore, the burden on the operator for performing the fine adjustment of the positions of the torches 10, 20, and 30 can be extremely reduced.

In addition, it is free from the burden of work such as correction for welding defect, and productivity can be improved remarkably.

[Embodiment 2]

Next, a second embodiment will be described. In addition, the components already described are denoted by the same reference numerals, and a description thereof will be omitted. Fig. 12 is a schematic perspective view showing a main part of a welding apparatus according to a second embodiment of the present invention, showing a state in which welding is performed while moving the workpiece to be welded to a moving device. Fig.

The welding apparatus S for welding the workpiece 1 while moving the welding head 4 (welding machine) with the moving apparatus 100 has been described in the first embodiment. However, The present invention is not limited to this. 12, the welding apparatus S1 moves the workpiece to be welded 1 to the base 50 of the welding head portion 4 by the moving apparatus 100A while welding Up type which is designed to allow a user to operate the apparatus. At this time, the torch supporting mechanisms 60A, 60B, and 60C may be placed on the base 50 or directly on any portion of the mobile device 100A.

[Modifications]

Although the first and second embodiments of the present invention have been described above, the present invention is not limited to the first and second embodiments described above, and it is possible to appropriately change the scope of the present invention without departing from the spirit of the present invention. In addition, the components already described are denoted by the same reference numerals, and a description thereof will be omitted.

Although the welding apparatus S has been described as an example of the case where the T piece to be welded 1 is welded in the first embodiment, the welding may be performed while moving the welding head 4, The shape, material, and the like of the member 1 to be welded are not particularly limited.

In the first and second embodiments, the torch clamping mechanism 40A for the leading electrode, the torch clamping mechanism 40B for the trailing electrode, and the clamping mechanism 40C for the pillar wire torch are configured as members having the same configuration It does not matter.

The preceding electrode torch position adjusting mechanism 60A, the trailing electrode torch position adjusting mechanism 60B and the pillar wire torch position adjusting mechanism 60C are constituted by members having different shapes, but they may be the same. The leading electrode torch 10 and the trailing electrode torch 20 may be formed by attaching the leading electrode 11 and the trailing electrode 21, respectively.

The filler wire torch 30 may have a plurality of filler wires 31.

The torch for filler wire may or may not be energized.

Furthermore, if fine adjustment is possible, the shape of the torch for the filler wire may be a straight torch of the same specification as the electrode torch.

A loosening preventing member such as a spring washer, a rotation preventing sink gold, a knock pin, and a split pin is provided at a portion of the torch clamps 45 and 45C for supporting the torches 10, 20 and 30, Or may be maintained firmly.

1: Welded member 1a: Welded point
2: lower plate (member to be welded) 3: plate (member to be welded)
4: welding head 10: forward electrode torch
11: leading electrode (electrode) 20: trailing electrode torch
21: trailing electrode (electrode) 30: torch for filler wire
31: filler wire 40: torch clamping mechanism
40A: Torch clamping mechanism for preceding electrode (torch supporting mechanism)
40B: Torch clamping mechanism for a trailing electrode (torch supporting mechanism)
40C: Clamp mechanism for pillar wire torch (torch support mechanism)
44: angle adjusting mechanism 45, 45C: torch clamp
45a: Retaining hole 45b: Notched groove
45c: Screw hole 46: Stay stator with torch clamp
46a: a shaft member insertion hole 46b: an arc-shaped long hole
47: shaft member 48: torch clamp holding region
50: Base 50a: Long hole
60: Position adjusting mechanism
60A: a preceding electrode torch position adjusting mechanism (position adjusting mechanism)
60B: Trailing electrode torch position adjusting mechanism (position adjusting mechanism)
60C: Filler wire torch position adjusting mechanism (position adjusting mechanism)
61: vertical positioning mechanism 62: horizontal positioning mechanism
63, 63C, 64: knob 65, 65C, 68: feed screw member
65a: male thread portion 66, 66C:
66a, 66Ca: Support plate portion 66d: Female thread portion
67, 67C: Slider 69: Guide member
70: positioning dog part 80: welding head part moving device
81: Right welding head cylinder for vertical movement (lifting device)
82: Left side welding head part Up / down cylinder (lifting device)
83: Cylinder for abutting (moving in the opposite direction)
100, 100A: moving device 110: welding direction moving device
120: traveling roller 130: traveling motor
140: frame frame 150: rail
200: head unit device 210: stance
220: lateral guide 230: sliding plate
240: fixed frame 250: vertical and horizontal frame
260: Head unit transverse motor 270: Up / down cylinder
S, S1: Welding device (gas shield arc welding device)
T1: fastening member T3: fastener

Claims (11)

A plurality of electrode torches having electrodes to which a current is supplied from the feeding device,
A torch for a filler wire disposed between the plurality of electrode torches and supporting a filler wire,
A torch clamp for supporting the torch for the electrode and the torch for the filler wire,
A gas shielded arc welding apparatus having a base on which the torch clamps are supported,
Each of the angle adjusting mechanisms for respectively adjusting the installation angles of the plurality of electrode torches and the filler wire torches by rotating the torch clamps by a predetermined angle,
And a position adjusting mechanism for moving the angle adjusting mechanism in all directions to adjust the positions of the plurality of electrode torches and the filler wire torches,
The position adjusting mechanism includes:
A vertical positioning mechanism capable of adjusting the position by moving the torch clamp for electrodes for supporting the plurality of electrode torches, respectively, of the torch clamps in the vertical direction,
And a horizontal positioning mechanism capable of adjusting the position by moving the plurality of electrode torch clamps in the abutting direction,
Wherein the vertical positioning mechanism comprises:
A vertical knob for rotatable operation for moving the plurality of electrode torches in the vertical direction,
A feed screw member fixed to the vertical knob,
A fixing table on which the feed screw member is rotatably inserted and mounted on the base,
And a vertical slider slidably moving with respect to the fixing table in accordance with the rotation of the feed screw member and connected to the torch clamps for the plurality of electrodes,
The plurality of electrode torch clamps move in the vertical direction together with the vertical slider by rotating the vertical knob,
Wherein the horizontal positioning mechanism comprises:
A horizontal knob for rotatable operation for moving the plurality of electrode torches in the abutting direction,
A feed screw member fixed to the horizontal knob,
A guide member into which the feed screw member is rotatably inserted,
And a horizontal slider slidably moving with respect to the guide member in accordance with rotation of the feed screw member and connected to the plurality of electrode torch clamps,
The plurality of electrode torch clamps move in the direction of engagement with the horizontal slider by rotating the horizontal knob,
Wherein the vertical positioning mechanism and the horizontal positioning mechanism are arranged on the base by connecting the vertical slider and a guide member supporting the horizontal slider by a connecting member
Gas shield arc welding equipment. delete delete delete The method according to claim 1,
And an elongated hole is formed in the base so as to insert a fastener for fixing the fixing table to the base so as to be movable in the welding direction along the plate surface of the base
Gas shield arc welding equipment. 6. The method according to claim 1 or 5,
Wherein the angle adjusting mechanism comprises:
A torch clamp mounting stay provided adjacent to the torch clamp,
A shaft member inserted into a shaft member insertion hole formed in the torch clamp mounting stay,
And a torch clamp support member which is inserted into an arc-shaped long hole formed in the torch clamp mounting stay and is fastened to the torch clamp,
The torch clamp support is provided so as to adjust the angle of the angle adjusting mechanism in the vertical direction by loosening the fastening state of the torch clamp support member to be fastened to the torch clamp
Gas shield arc welding equipment. 6. The method according to claim 1 or 5,
Wherein the electrode torch mounted on the position adjusting mechanism is composed of a curved torch bent from a supporting portion supported by the torch clamp toward the tip of the electrode torch so as to loosen the respective torch clamps, So that the forward angle and the backward angle with respect to the welded portion can be adjusted
Gas shield arc welding equipment. 6. The method according to claim 1 or 5,
Each of the torch clamps includes:
A retaining hole for rotatably inserting the electrode torch and the filler wire torch in the circumferential direction,
A cutout groove formed in the holding hole,
A screw hole formed orthogonally to the notched groove,
And a fastening member screwed into the screw hole to adjust an interval of the inner wall of the cutout groove,
The tightening force of the screw hole is loosened so that the electrode torch and the filler wire torch can rotate in the circumferential direction respectively and the fastening force of the screw hole is made strong, A torch, and a torch for the filler wire,
Gas shield arc welding equipment. The method according to claim 6,
The base includes:
A lifting device for lifting and lowering the base;
An abutting direction moving device for moving the base in the abutting direction,
And a positioning dog portion protruding from the base so as to protrude in the abutting direction and for determining an abutting position and a vertical position of the electrode torch and the filler wire torch in a simulated manner.
Gas shield arc welding equipment. 6. The method according to claim 1 or 5,
And the base is welded while being moved together with the electrode torch and the filler wire torch by the moving device
Gas shield arc welding equipment. 6. The method according to claim 1 or 5,
And the welding is performed while moving the workpiece to be welded to the base by the moving device
Gas shield arc welding equipment.

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