JP5634916B2 - Gas shield arc welding equipment - Google Patents

Description

  The present invention relates to a gas shielded arc welding apparatus including an electrode torch and a filler wire torch.

  When welding long fillets used in shipbuilding, bridges, etc. by horizontal fillet welding, two electrodes are arranged on both sides of the standing plate, and these electrodes form a single molten pool for welding. Gas shield arc welding of the type is known (see, for example, Patent Document 1).

This two-electrode type gas shielded arc welding increases the welding current and increases the welding speed, so that it is more than twice as fast as the welding method with one electrode on each side of the vertical plate. Is possible.
However, when the current value of the electrode is made higher than a predetermined value, arc interference between the two poles becomes intense due to the influence of the magnetic field due to the welding current of the leading electrode and the trailing electrode.
For this reason, in the two-electrode type gas shielded arc welding, there has been a problem that the fluctuation of the molten pool shape during welding becomes large, resulting in poor welding.

  For such a problem, a gas shielded arc welding method has been proposed in which a filler wire for canceling the magnetic field between the leading electrode and the trailing electrode is disposed and welding is performed (for example, a patent) Reference 2). By using such a method, it is possible to realize welding that does not require reworking by suppressing fluctuations in the molten pool shape and greatly reducing welding defects.

  When welding a member to be welded better using the gas shielded arc welding method as in Patent Document 2, it is preferable to set the welding conditions as described in Patent Document 3. In order to set this welding condition, the distance between the electrodes described in Patent Document 2, for example, each wire (hereinafter referred to as the wire tip) fed from all torches at a very narrow distance of 15 to 50 mm. It is required to adjust the interval and angle to the optimum conditions in the shortest possible time. Such adjustment requires extremely complicated adjustment as compared with the case of two electrodes.

  When performing welding work that actually satisfies these requirements in production lines such as shipbuilding and bridge manufacturers, the dimensions differ slightly for each target member to be welded, and the feed position is slightly deviated. Since the welding location is different and the target position of the wire tip changes each time the work is performed, it is necessary to finely adjust the positions of all the wire tips in units of millimeters or less each time the welding work is started. In addition, because welding conditions change due to wind disturbance or the like, and the target position of the wire tip changes each time the work is performed, it is necessary to finely adjust the electrode while observing the arc state through the light shielding glass.

JP 7-256455 A JP 2004-261839 A JP 2010-155281 A JP-A-3-234367

  However, in an automatic welding apparatus as described in Patent Document 4, when the welding conditions described in Patent Document 3 are set, only a filler wire is inserted between adjacent torches. The mechanism must be set to the optimum conditions as described above for each member to be welded, and a considerable burden is placed on the operator to perform fine adjustment appropriately. Also, if it fails, it must be reworked and productivity is greatly reduced. For this reason, there has been a problem that the position adjustment of the torch must be made as easy as possible.

  Therefore, the present invention has been made in view of the above-described problems, and is easily optimized even with a complicated welding condition in which filler wires are provided on a plurality of electrodes and a mechanism having a narrow inter-electrode distance. It is an object of the present invention to provide a gas shielded arc welding apparatus capable of adjusting the position of the torch according to welding conditions.

In order to solve the above problems, a gas shielded arc welding apparatus according to the present invention is arranged between a plurality of electrode torches having electrodes to which current is supplied from a power supply device, and the plurality of electrode torches, and a filler wire Gas shield arc welding apparatus comprising: a filler wire torch for supporting a plurality of electrodes; a plurality of electrode torches; a respective torch clamp for supporting each of the filler wire torches; and a base on which each of the torch clamps is supported. Each of the torch clamps is rotated by a predetermined angle to adjust the installation angles of the plurality of electrode torches and the filler wire torches, and the angle adjusting mechanism in all directions. wherein by moving a plurality of electrodes for torch position adjusting respective positions of the torch for the filler wire Includes a position adjusting mechanism respectively, and the position adjusting mechanism, the moving position adjustment electrode torch clamp for supporting each of the plurality of the electrodes torch of the torch clamp the respective vertical A vertical positioning mechanism, and a horizontal positioning mechanism capable of adjusting the position by moving each of the plurality of electrode torch clamps in the butting direction, wherein the vertical positioning mechanism includes the plurality of electrode torches. Each has a vertical knob for rotational operation for moving in the vertical direction, a feed screw member fixed to the vertical knob, and a support plate portion on which the feed screw member is rotatably inserted and supported. A fixing base placed on the base; and a female screw portion that is screwed into a male screw portion formed on the feed screw member, And a vertical slider to which the plurality of electrode torch clamps are respectively coupled, and the plurality of electrode torch clamps rotate the vertical knob. The horizontal positioning mechanism is fixed to the horizontal knob and a horizontal knob for rotating operation for moving the plurality of electrode torches in the abutting direction, respectively. A feed screw member, a guide member having a support plate portion on which the feed screw member is rotatably inserted and supported, and a female screw portion threadably engaged with a male screw portion formed on the feed screw member, The plurality of electrode torch clamps are connected to each other while sliding with respect to the guide member as the feed screw member rotates. A plurality of electrode torch clamps that move in the abutting direction together with the horizontal slider by rotating the horizontal knob, and the vertical positioning mechanism and the horizontal positioning mechanism are The slider and the guide member that supports the horizontal slider portion are connected by a fastening member and are respectively disposed on the base .
Here, all directions are a horizontal direction (hereinafter referred to as “butting direction” or “X direction”) perpendicular to the welding progress direction, and a vertical direction (hereinafter referred to as “Y direction” where appropriate) which is a vertical vertical direction. , A direction including a welding progress direction (hereinafter referred to as “welding direction” or “Z direction”).

  According to such a configuration, the gas shield arc welding apparatus has the angle adjustment mechanism, thereby rotating the electrode torch and the filler wire torch respectively by a predetermined angle to thereby set the torch angles of the electrode torch and the filler wire torch, respectively. It can be fine-tuned to an appropriate angle. In addition, since the gas shield arc welding apparatus is supported by a torch support mechanism having a position adjustment mechanism that can be moved and adjusted in all directions, the leg length of the torch is adjusted according to the position of the member to be welded. When changing, even if it is a complicated and narrow inter-electrode distance mechanism with three or more electrodes, the position of each torch can be freely adjusted in all directions in the vertical and horizontal directions, The position of the tip electrode and filler wire can be easily adjusted to a predetermined target position.

In addition, according to this configuration, the position adjustment mechanism of the gas shield arc welding apparatus can adjust the vertical position of the electrode by moving the torch support mechanism in the vertical direction by the vertical positioning mechanism, and can also perform horizontal positioning. By moving the torch support mechanism in the butting direction by the mechanism, the position of the electrode in the butting direction can be adjusted according to the welded portion of the welded member. For this reason, the vertical positioning mechanism and the horizontal positioning mechanism can easily adjust the positions in the vertical direction and the butting direction, respectively, so that it is possible to cope immediately even if the welding location of the target welded member changes. it can.

Further , according to this configuration, the vertical positioning mechanism continuously rotates the feed screw member by rotating the knob and continuously moves the slider and the torch support mechanism with respect to the fixed base and the base in accordance with the rotation. Can be moved. Therefore, when it is necessary to finely adjust the position of the electrode in the vertical direction, if rotating the knob to adjust by moving vertically align the electrodes on the welding point of the workpiece to be welded be able to.

Further , according to such a configuration, the horizontal positioning mechanism continuously moves the slider and the torch support mechanism with respect to the base in accordance with the rotation by rotating the knob and interlockingly rotating the feed screw member. Can do. Therefore, when it is necessary to finely adjust the position of the electrode in the joining direction, if rotating the knob to adjust the position of the electrodes is moved in the joining direction fit the welding point of the workpiece to be welded be able to.

The vertical positioning mechanism can adjust the position of the filler wire torch clamp that supports the filler wire torch among the torch clamps by moving the filler wire torch clamp in the vertical direction. A vertical knob for rotational operation for moving in the direction, a feed screw member fixed to the vertical knob, and a support plate portion on which the feed screw member is rotatably inserted and supported. A fixed base that is placed, and a female screw part that is threadedly engaged with a male screw part formed on the feed screw member. The filler wire slides with respect to the fixed base as the feed screw member rotates. A vertical slider coupled to the torch clamp for the filler wire, the torch clamp for the filler wire by rotating the vertical knob. In order to move the filler wire torch in the butting direction, the horizontal positioning mechanism can move the filler wire torch clamp in the butting direction and move the filler wire torch in the butting direction. A horizontal knob for rotational operation, a feed screw member fixed to the horizontal knob, a guide member having a support plate portion on which the feed screw member is rotatably inserted and supported, and formed in the feed screw member A horizontal slider having a female screw portion screwed into the male screw portion, sliding with respect to the guide member as the feed screw member rotates, and connected to the filler wire torch clamp. The filler wire torch clamp butt with the horizontal slider by rotating the horizontal knob The vertical positioning mechanism and the horizontal positioning mechanism are mounted on the base by connecting the vertical slider and the guide member supporting the horizontal slider portion by a fastening member. it is preferable to have.

According to such a configuration, the vertical positioning mechanism continuously moves the slider and the torch support mechanism with respect to the fixed base and the base in accordance with the rotation by rotating the knob and interlockingly rotating the feed screw member. be able to. Therefore, when it is necessary to finely adjust the position of the filler wire in the vertical direction, if the knob is rotated, the position of the filler wire is moved in the vertical direction according to the welding location of the member to be welded. can do.
Further, the horizontal positioning mechanism can continuously move the slider and the torch support mechanism with respect to the base in accordance with the rotation by rotating the knob and interlockingly rotating the feed screw member. For this reason, if it is necessary to finely adjust the position of the filler wire in the butting direction, if the knob is rotated , the position of the filler wire is moved in the butting direction according to the welded part of the welded member. can do.

In addition, the angle adjusting mechanism includes a torch clamp mounting stay adjacent to the outside of the welding line direction of each torch clamp, and a support member inserted into a support shaft member insertion hole formed in each torch clamp mounting stay. A shaft member and a torch clamp support that is fastened to the torch clamp through an arc-shaped elongated hole formed in each of the torch clamp mounting stays, and each torch clamp support is attached to the torch clamp By loosening the tightening degree to be fastened, the angle adjusting mechanism is provided so that the angle in the vertical direction can be adjusted, and the horizontal sliders are respectively fastened by fastening members on the outer side in the welding line direction of the torch clamp mounting stays. It is preferable that it is connected .

According to such a configuration, the angle adjustment mechanism of the gas shield arc welding apparatus supports the torch by loosening the tightening degree of the torch clamp support that is fastened to the torch clamp that holds the electrode torch and the filler wire torch. The vertical angle of the mechanism can be adjusted along the arcuate slot. Thereby, the gas shielded arc welding apparatus can freely adjust the vertical angles of the electrode torch and the filler wire torch and finely adjust the direction to an appropriate direction.

In addition, a fastener that fixes the plurality of electrode torches and the filler wire torch to the base can be moved in the welding direction along the plate surface of the base. Long holes to be inserted are respectively formed, and the torch clamps of the filler wire torch are arranged on the rear side of the butting direction in a plan view than the torch clamps of the plurality of electrode torches, and It is preferable that the torch clamps of the plurality of electrode torches are disposed on the lower side when viewed from the front .

  According to this configuration, the base moves and adjusts the position of the fixture inserted in the long hole in the plate surface of the base, thereby adjusting the position of each torch clamp, electrode, and filler wire that moves together with the fixing base. Fine adjustment can be made in the welding direction.

  The electrode torch attached to the position adjusting mechanism is a curved torch formed by bending from a support portion supported by each torch clamp toward the tip of the electrode torch. It is preferable that the advancing angle and the receding angle with respect to the welded part can be adjusted by loosening each of them and adjusting the rotation around the axis.

  According to such a configuration, the electrode torch comprises a curved torch formed by curving from the support portion toward the tip, so that if each torch clamp is loosened and rotated about its axis, the electrode torch Since it rotates about the center line of the support part held by the torch clamp, it becomes easy to freely adjust the advancing angle and the receding angle of the electrode torch with respect to the welding location to an appropriate angle.

  Each torch clamp of the gas shielded arc welding apparatus includes: a curved hole for the electrode; a holding hole for inserting the filler wire torch so as to be rotatable in a circumferential direction; and a notch groove formed in the holding hole. A screw hole formed orthogonal to the notch groove, and a fastening member that is screwed into the screw hole and adjusts an interval between the inner walls of the notch groove, and the fastening member tightens the screw hole. By loosening the force, the curved torch for the electrode and the torch for the filler wire can be rotated in the circumferential direction, respectively, and by tightening the tightening force of the screw hole, the torch for the electrode and the torch for the filler wire are It is preferable to hold each.

According to this configuration, when the fastening member loosens the tightening force of the screwed screw hole, the inner diameter of the holding hole for holding each torch increases as the interval between the inner walls of the notch grooves increases. Therefore, the electrode torch and the filler wire torch can be rotated in the circumferential direction. Each torch can be rotated about the center line of the holding hole to adjust the direction of the electrode at the tip of the torch.
In addition, since the fastening member increases the tightening force of the screw hole, the inner diameter of the holding hole is reduced as the interval between the cutout grooves becomes narrower, so that each torch can be held firmly and firmly. .

  Further, the base is disposed as a lifting device for moving the base up and down, a butting direction moving device for moving the base in the butting direction, and protruding from the base in the butting direction, and the electrode torch and the filler wire torch It is preferable to include a positioning dog portion that determines the butting position and the vertical position.

  According to such a configuration, in the gas shield arc welding apparatus, the positioning dog portion adjusts the position of the base by the lifting device and the butting direction moving device, so that the butting position and the vertical position of the electrode torch and the filler wire torch are set. It is possible to make a copy according to the position of the welded part. For this reason, it can cope easily even if the to-be-welded location of the to-be-welded member used as object changes.

  In the gas shielded arc welding apparatus, it is preferable to perform welding while moving the base together with the electrode torch and the filler wire torch by a 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.

  Moreover, it is preferable that a gas shielded arc welding apparatus welds with respect to the said base, moving a to-be-welded member with a moving apparatus.

  According to this configuration, the gas shield 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 filler wire torch are rotated in all directions including the welding direction, the vertical direction, and the butting direction, and in a desired direction, so that the electrodes of each torch By appropriately adjusting the distance between the electrodes and the torch angle, even a welding apparatus having filler wires on a plurality of electrodes can be easily adjusted to optimum welding conditions.
With this mechanism, it is possible to easily adjust finely at the start of welding work and during welding work to set optimum welding conditions, thereby forming a good weld bead and improving the stability of the generated arc. Generation of spatter can be suppressed.
Further, the burden on the operator for performing fine adjustment of the position of the torch and the like can be greatly reduced.
Furthermore, it is freed from the work burden of reworking poor welding, and productivity can be greatly improved.

It is a schematic perspective view which shows Embodiment 1 of the welding apparatus which concerns on this invention. It is a schematic perspective view which shows the head unit apparatus of Embodiment 1 of the welding apparatus which concerns on this invention. It is a schematic plan view of the welding head part of Embodiment 1 of the welding apparatus which concerns on this invention. It is a schematic right view of the welding head part of Embodiment 1 of the welding apparatus which concerns on this invention. It is a schematic perspective view of the welding head part of Embodiment 1 of the welding apparatus which concerns on this invention. It is a schematic front view which shows the vertical positioning mechanism of Embodiment 1 of the welding apparatus which concerns on this invention. It is a schematic front view which shows the horizontal positioning mechanism of Embodiment 1 of the welding apparatus which concerns on this invention. It is a figure which shows the angle adjustment mechanism of Embodiment 1 of the welding apparatus which concerns on this invention, (a) is a schematic perspective view, (b) is a longitudinal cross-sectional view of a torch clamp. It is a figure which shows the clamp mechanism for filler wire torches and filler wire torch position adjustment mechanism of Embodiment 1 of the welding apparatus which concerns on this invention, (a) The schematic perspective view seen from the front direction, (b) is seen from the back direction. FIG. It is a schematic side view which shows the torch support mechanism for filler wires of Embodiment 1 of the welding apparatus which concerns on this invention. The positioning dog part of Embodiment 1 of the welding apparatus which concerns on this invention is shown, (a) is a top view, (b) is a schematic longitudinal cross-sectional view. It is a figure which shows Embodiment 2 of the welding apparatus which concerns on this invention, and is a schematic principal part perspective view which shows the state when welding, moving a to-be-welded member with a moving apparatus.

[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 the present embodiment, first, as an example of the welding apparatus S, a lower plate 2 that is installed horizontally, and a standing plate 3 that is arranged perpendicularly to the upper surface of the lower plate 2, An example of a so-called line welder in which fillet welding is performed while moving the welding head portion 4 (welder, see FIG. 2) with the moving device 100 along the welded portion 1a at the corner of the member 1 to be welded. explain.
Here, the X direction is a butt direction that is a horizontal direction orthogonal to the welding direction, the Y direction is a vertical direction that is a vertical up and down direction, and the Z direction is a welding direction.

≪Configuration of welding equipment≫
As shown in FIG.1 and FIG.2, the welding apparatus S welds the lower plate 2 and the standing plate 3 which are the members 1 to be welded, moving the welding head part 4 along the to-be-welded location 1a (welding line). This is a gas shielded arc welding apparatus. The welding device S includes a moving device 100, a control panel 400, an operation panel 410, a dust collector 500, a wire container 600, a welding power source, a cooling water supply device, a shield gas supply device (not shown), and welding. A head unit 4 (welder).

≪Configuration of welded parts≫
As shown in FIG. 1, the member to be welded 1 is a large structure or the like used for, for example, a ship or a bridge, and includes a lower plate 2 and a standing plate 3, for example. This member 1 to be welded is welded and joined to the lower plate 2 and the upright plate 3 so as to be orthogonal to each other. A welding head portion 4 (see FIG. 2), which will be described later, is disposed on the welded portion 1a (welding line) to be welded, and the welding head portion 4 is moved along the welded portion 1a by the welding direction moving device 110. Run.

≪Configuration of mobile device≫
As shown in FIG. 2, the moving device 100 travels to move the welding head portion 4 (welder) in the welding direction (Z direction), the butting direction (X direction orthogonal to the welding direction), and the vertical direction (Y direction). Device. The moving device 100 includes, for example, a welding direction moving device 110 (see FIG. 1), a head unit device 200, a vertical movement cylinder 270, and a welding head portion moving device 80.

<Configuration of welding direction moving device>
A welding direction moving device 110 shown in FIG. 1 is a conveying device that moves a number of welding head portions 4 (see FIG. 2) of the welding device S arranged on the back side thereof 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 gantry frame 140. The welding direction moving device 110 rotates the traveling motor 130 so that each welding head unit 4 moves in the welding direction together with the base 50 to perform welding.

The rails 150 are a pair of left and right traveling guide rails made of, for example, I-shaped steel, and are installed along the plurality of welded members 1 laid on the floor surface of the welding facility.
The running roller 120 is a wheel that moves the gantry frame 140 in the welding direction by rolling on each rail 150, and a plurality of the running rollers 120 are arranged at the lower end of the gantry frame 140.
The travel motor 130 is a drive source that rotationally drives each travel roller 120, and is driven by a current supplied from a power source (not shown) via the control panel 400, with a deceleration transmission mechanism (not shown) interposed. The traveling roller 120 is driven to rotate.
The gantry frame 140 includes, for example, a gate-type frame disposed so as to straddle the member 1 to be welded, and includes a pair of left and right vertical leg portions 141 and a deck 142 mounted on the left and right leg portions 141. I have. On the gantry frame 140, a traveling roller 120, a traveling motor 130, a head unit device 200, a control panel 400, a dust collector 500, a wire container 600, and the like are mounted.

<Configuration of head unit device>
As shown in FIG. 2, the head unit device 200 is an arch-shaped device for moving the welding head portion 4 in the butting direction, and is provided along the gantry frame 140 (see FIG. 1), for example. The head unit device 200 includes a stanchion 210 (see FIG. 1), a lateral guide 220, a sliding plate 230, a fixed frame 240, a vertical motion frame 250, a head unit lateral motion motor 260, and a vertical motion cylinder. 270, a right welding head portion vertical movement cylinder 81, a left welding head portion vertical movement cylinder 82, and an operation panel 410 are provided.

As shown in FIG. 1, the stanchion 210 is an arch-shaped column frame that suspends a wire container 600 that accommodates a welding wire serving as a leading electrode 11 (see FIG. 2) and a trailing electrode 21. The stanchion 210 includes a column frame 211, a construction frame 212, and a hanging tool 213.
The column frame 211 is a pair of left and right column members that stand on the gantry frame 140 and move together.
The erection frame 212 is a member on which a large number of suspenders 213 are suspended at an appropriate interval, and is erected at the upper end portion between the two column frames 211.
The hanging tool 213 is a member for hanging the wire container 600 and is suspended by the erection frame 212.

As shown in FIG. 2, the lateral guide 220 is a frame member that extends from the deck 142 in the left-right direction, and has a pair of travel guide portions 220 a that extend in the butting direction. The lateral guide 220 is installed on the stanchion 210 in the abutting direction.
The sliding plate 230 is a member that slides in the abutting direction while being guided by the traveling guide portion 220a, and has an engaging portion (not shown) that engages with the traveling guide portion 220a. The sliding plate 230 is provided on the lateral guide 220 so as to be slidable in the lateral direction.
The fixed frame 240 is a frame-like frame extending in the vertical direction, and is fixed to the sliding plate 230 and provided to move up and down by a vertical movement cylinder 270.

As shown in FIG. 2, the vertical movement frame 250 is a frame for holding the welding head portion 4 and the operation panel 410, and is provided to move up and down with respect to the fixed frame 240 by the vertical movement cylinder 270. . The vertical movement frame 250 is formed of a rectangular frame-like frame extending in the vertical direction like the fixed frame 240, and is disposed opposite to the fixed frame 240. A welding head moving device 80 for moving the base 50 in the X, Y, and Z directions is provided between the vertically moving frame 250 and the welding head 4.
In addition, since two welding head portions 4 are arranged in a symmetrical manner in each vertical movement frame 250, the right-side welding head portion 4 will be described below, and the description on the left side will be omitted as appropriate.

The head unit lateral movement motor 260 is a motor driving device for running the fixed frame 240 and moving the left and right welding head portions 4 in the horizontal direction, and is provided on the fixed frame 240.
The vertically moving cylinder 270 is a device that moves the vertically moving frame 250 up and down with respect to the lateral guide 220 and the sliding plate 230 via the vertical guide 280 on the fixed frame 240, and includes, for example, an air cylinder device. The cylinder 270 for vertical movement is provided with a cylinder 271 connected to the lower center of the upper end of the frame-shaped vertical movement frame 250, an upper end is provided in the cylinder 271 so as to be movable up and down, and a lower end is fixed to the sliding plate 230. A piston rod 272.

<Configuration of welding head moving device>
As shown in FIG. 2, the welding head unit moving device 80 has a welding head unit 4 more than the welding direction moving device 110 (see FIG. 1), the head unit device 200 (see FIG. 1), and the vertical movement cylinder 270. It is an apparatus for adjusting the position of the welding head portion 4 by moving a short distance in the X, Y, and Z directions. The welding head portion moving device 80 includes a right welding head portion vertical movement cylinder 81, a left welding head portion vertical movement cylinder 82, and a butt air cylinder 83.

As shown in FIG. 2, the right welding head portion vertical movement cylinder 81 is a device for moving the right welding head portion 4 disposed on the right side of the vertical movement frame 250 in the vertical direction (Y direction), and is rectangular. The frame is fixed to the right frame of the vertically moving frame 250.
The left welding head part vertical movement cylinder 82 is a cylinder device for moving the left welding head part 4 arranged on the left side of the vertical movement frame 250 in the vertical direction (Y direction). It is fixed to the left frame of the frame 250.

  The butting air cylinder 83 (butting direction moving device) is a device that moves the entire welding head part 4 together with the base 50 in the butting direction (X direction). The abutting air cylinder 83 is fixed to the base 50 and is moved forward and backward by compressed air supplied to the inside, and a piston having one end portion disposed in the cylinder 83a and the other end fixed to the connecting frame 83c. The rod 83b, the connecting frame 83c connected to the vertical movement frame 250, a pair of upper and lower sliders 83d extending in the butting direction on the side surface on the welding direction side of the cylinder 83a, and the slider 83d are slidable. And a guide rail 83e for guiding the movement of the cylinder 83a in the butting direction, and a holding plate 83f for fixing the guide rail 83e to the side surface of the right welding head portion vertical movement cylinder 81.

  The operation panel 410 operates the head unit lateral movement motor 260, the vertical movement cylinder 270, the welding head moving device 80, the welding power source, the cooling water supply device, and the shield gas supply device (not shown) to operate the left and right welding head portions. 4 is a controller for controlling the position and drive of 4, and is attached to the vertically moving frame 250.

A power source (not shown) includes a welding power source (power feeding device) that supplies power to each electrode portion of the leading electrode 11 and the trailing electrode 21 of the welding device S shown in FIG. 2 and a traveling motor 130 (see FIG. 1). And a power source that supplies electric power to the drive source of the head unit lateral movement motor 260, and is installed at a predetermined position, for example, under the floor of the welding direction moving device 110.
The same applies to a cooling water supply device (not shown) and a shield gas supply device.

≪Configuration of welding head≫
As shown in FIG. 2, the welding head 4 (welding machine) supports the leading electrode torch 10, the trailing electrode torch 20, the filler wire torch 30, and these torches (10, 20, 30), respectively. Torch clamp mechanism 40, a welding power source (not shown) for supplying current to those torches (10, 20, 30), a base 50 on which these torches (10, 20, 30) are supported, and a base And a welding head part moving device 80 for moving the welding head part 4 such as 50.
The entire welding head portion 4 can be largely moved 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 movement cylinder 270. The position adjusting mechanism 60 can move the leading electrode torch 10, the trailing electrode torch 20, and the filler wire torch 30 small in the X, Y, and Z directions. It has become.
This welding head part 4 performs gas shielded arc welding while running with the welding direction moving device 110, and supplies a current to the torch (10, 20, 30) or injects an inert gas. Since the configuration of the known gas shielded arc welding apparatus is used, detailed description thereof is omitted.

As shown in FIGS. 3 and 4, each welding head portion 4 in which each torch (10, 20, 30) is arranged is configured such that the leading electrode 11, the trailing electrode 21 and the filler wire 31 are fed. In addition, the position and angle in the X, Y, and Z directions are provided on the base 50 via a torch clamp mechanism 40 having an angle adjustment mechanism 44 and a position adjustment mechanism 60 so as to be finely adjusted.
As shown in FIG. 5, in the electrode torch (10, 20), the bent portions 10a, 20a are curved from the support portion supported by each torch clamp 45 toward the tip of the electrode torch (10, 20). It consists of a curved torch formed, and it is possible to easily adjust the advancing angle and the receding angle with respect to the welded portion 1a (see FIG. 4) by loosening each torch clamp 45 and adjusting the rotation around the axis. is there.

≪Configuration of torch clamp mechanism≫
The torch clamp mechanism 40 is a support mechanism for supporting the leading electrode torch 10, the trailing electrode torch 20, and the filler wire torch 30. The torch clamping mechanism 40 A and the trailing electrode torch 20 It comprises a supporting electrode torch clamp mechanism 40B for supporting and a filler wire torch clamping mechanism 40C for supporting the filler wire torch 30. Since the torch clamp mechanism 40A for the leading electrode and the torch clamp mechanism 40B for the trailing electrode are symmetrical, the leading torch clamp mechanism 40A for the leading electrode is mainly described, and the torch clamping mechanism 40B for the trailing electrode is described. Are omitted as appropriate.

  As shown in FIG. 5, the leading electrode torch clamp mechanism 40 </ b> A is a support mechanism that detachably supports the leading electrode torch 10. Each of the leading electrode torch clamp mechanism 40 </ b> A, a torch clamp 45, a torch clamp mounting stay 46, and a support shaft member described later. 47, a torch clamp support tool 48, an attachment 49, a fastening member T <b> 1, and an angle adjustment mechanism 44.

  As shown in FIGS. 8A and 8B, each torch clamp 45 is a member that supports the leading electrode torch 10 and the trailing electrode torch 20. Each torch clamp 45 is formed with a holding hole 45a, a notch groove 45b, a screw hole 45c, a protruding piece 45d, and a fixed female screw portion 45e.

The holding hole 45a is a hole into which each of the torches (10, 20) is inserted so as to be rotatable in the circumferential direction via the insulating bush 9, and the notch groove 45b is formed on the outer periphery, so that the holding hole 45a is viewed in plan view. It is formed in a substantially C shape.
The notch groove 45b is a part that is notched from the outer periphery of the torch clamp 45 to the holding hole 45a, and is formed by arranging a pair of projecting pieces 45d at a predetermined gap interval.
The screw hole 45c is a hole into which a fastening member T1 for adjusting the tightening condition formed orthogonally to the notch groove 45b is screwed. When the fastening member T1 is screwed into the screw hole 45c, the diameter of the holding hole 45a and the interval between the notch grooves 45b between the pair of projecting pieces 45d are adjusted, and the holding hole 45a that holds the leading electrode torch 10 is held. It is formed on the projecting piece 45d so that the tightening force is adjusted.
The projecting piece 45d is formed of a pair of thick plate-like members in which a notch groove 45b and a screw hole 45c are formed. If the fastening member T1 is strongly screwed into the screw hole 45c, the protrusion 45d has a narrow space between the protrusions 45d and 45d, and the torsion clamp 45 tightens the tightening force for fastening the leading electrode torch 10. The torch clamp 45 is firmly clamped. If the fastening member T1 is loosened, the inner diameter of the holding hole 45a becomes weaker to tighten the leading electrode torch 10, and the leading electrode torch 10 is circumferentially centered on the center line of the holding hole 45a (in the direction of arrow b). ) Or by moving forward and backward in the direction of the center line (in the direction of arrow a), it is possible to adjust the length of protrusion of the leading electrode torch 10 from the torch clamp 45, or to pull it out.
The fixed female screw portion 45e is a portion into which the male screw portion at the tip of the torch clamp support 48 that the torch clamp mounting stay 46 fixes to the torch clamp 45 is screwed.

  The torch clamp mounting stay 46 is a support plate member for supporting the torch clamp 45 so as to be rotatable by the length in the circumferential direction of the arc-shaped long hole 46b centering on the support shaft member insertion hole 46a. Next to the clamp 45. The lower end of the torch clamp mounting stay 46 is connected to the slider 67 by the fastening member T2, and both can move in the X and Y directions.

  The support shaft member 47 is threaded into the fixed female thread portion 45e of the torch clamp 45 by inserting the torch clamp support 48 through the adjustment hole 49a that is long in the vertical direction of the attachment 49, and the torch clamp 45 is attached to the torch clamp mounting stay 46. This is a screw member that allows the torch clamp 45 to rotate about the support shaft member 47 when it is rotatable. The support shaft member 47 is inserted into a support shaft member insertion hole 46 a formed in the torch clamp mounting stay 46.

  The torch clamp support 48 is a screw member whose tip is screwed to the fixed female screw portion 45e via the adjustment hole 49a and the arc-shaped elongated hole 46b, and a pair of left and right for restricting the rotation of the torch clamp 45. It is a member. The pair of torch clamp supports 48 are inserted into arc-shaped elongated holes 46 b formed in the torch clamp mounting stay 46.

The metal plate 49 is a metal thick plate member having a pair of left and right adjustment holes 49a that are long in the vertical direction in which the two torch clamp support tools 48 are inserted, and is arranged so as to cover the arc-shaped long hole 46b.
The fastening member T1 is an adjustment screw member that adjusts the clearance between the cutout grooves 45b and adjusts the tightening force of the torch clamp 45 by the holding hole 45a, and includes, for example, two screw members.

<Configuration of angle adjustment mechanism>
As shown in FIGS. 8A and 8B, the angle adjusting mechanism 44 is a mechanism that adjusts the installation angle of the leading electrode torch 10 by rotating the leading electrode torch 10 by a predetermined angle. The angle adjusting mechanism 44 is capable of adjusting the vertical direction of the leading electrode 11 by pivotally supporting the leading electrode torch 10 so as to be rotatable in the vertical direction (Y direction) about the support shaft member 47.
The angle adjusting mechanism 44 is connected to the torch clamp 45 adjacent to the torch clamp mounting stay 46, the support shaft member 47 inserted into the support shaft member insertion hole 46a formed in the torch clamp mounting stay 46, and the torch clamp mounting stay. And a torch clamp support 48 that is fastened to the torch clamp 45 through an arc-shaped elongated hole 46b formed in the hole 46b.
For this reason, the support shaft member 47 and the torch clamp support 48 constitute an angle adjustment mechanism 44 that adjusts the angle in the vertical direction of the leading electrode 11 by loosening the tightening degree fastened to the torch clamp 45.
As shown in FIGS. 9B and 10, the angle adjusting mechanism 44 is similar to the angle adjusting mechanism 44 using an arc-shaped elongated hole in the filler wire torch clamping mechanism 40 </ b> C of the filler wire torch 30. Is provided. Therefore, the description thereof is omitted.

≪Configuration of position adjustment mechanism≫
As shown in FIGS. 3 and 4, the position adjustment mechanism 60 moves the leading electrode torch 10, the trailing electrode torch 20, and the filler wire torch 30 (see FIG. 9) in the butting direction and the vertical direction, respectively. , A mechanism for adjusting the positions of the torches (10, 20, 30). The position adjusting mechanism 60 includes a leading electrode torch position adjusting mechanism 60A that adjusts the position of the leading electrode torch 10, a trailing electrode torch position adjusting mechanism 60B that adjusts the position of the trailing electrode torch 20, and a filler wire torch. And a filler wire torch position adjusting mechanism 60 </ b> C for adjusting the position of 30. 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 can adjust the position by moving the torch clamps 45 and 45C in the vertical direction (Y direction), respectively. The vertical positioning mechanism 61 shown in FIG. 6 and the horizontal positioning mechanisms 62 and 61C (see FIG. 9) shown in FIG. 7 that can adjust the position by moving each torch clamp 45 in the butting direction (X direction). I have.

<Configuration of vertical positioning mechanism>
As shown in FIGS. 3 and 6, the vertical positioning mechanism 61 of the leading electrode torch position adjusting mechanism 60A (position adjusting mechanism 60) includes a knob 64, a feed screw member 65, a fixed base 66, and a slider 67, which will be described later. (Vertical slider portion 67Y) and a fastening member T5. Each torch (10, 20, 30) is moved by the vertical positioning mechanism 61 by moving the vertical slider portion 67Y in the vertical direction (Y direction) through the feed screw member 65 by rotating the knob 64. The horizontal slider portion 67X, the torch clamp mounting stay 46, the torch clamp 45, and each torch (10, 20, 30) are integrated with the left and right guide portions 69a of the horizontal positioning mechanism 62 connected to the vertical slider portion 67Y in the vertical direction. It can be moved and adjusted in the vertical direction.

As shown in FIG. 6, the knob 64 is a rotary operation knob for finely moving the leading electrode torch 10 in the vertical direction with respect to the base 50.
The feed screw member 65 is a screw rod-like member that rotates integrally by rotating the knob 64, and the vertical slider portion 67 </ b> Y is screwed forward and backward at the center portion, and the base end portion is an upper and lower guide of the fixed base 66. The portion 66a is cantilevered so as to be rotatable.
The fixed base 66 is a member having a substantially grooved steel shape when viewed from the front and having an upper and lower guide portion 66a (support plate portion), and the fastener T3 inserted into the long hole 50a of the base 50 is connected to the upper and lower guide portions 66a. It is fixed on the base 50 by being screwed into a female screw portion 66d formed on the lower plate portion. The fixed base 66 is provided with a pair of left and right guide shafts 66c that are inserted into the vertical slider portion 67Y and slidably support the vertical slider portion 67Y.
The slider 67 has a female screw portion 67Yb that is screwed into a male screw portion 65a formed on the feed screw member 65, and is a member that slides between the upper and lower guide portions 66a and 66a as the feed screw member 65 rotates. The slider 67 is formed by connecting a vertical slider portion 67Y that can move in the vertical direction and a guide member 69 that supports a horizontal slider portion 67X (see FIG. 7) that can move in the butting direction by a fastening member T5. It moves together with the fixed base 66 in the vertical direction.
The fastener T3 is a bolt for position adjustment of a welding direction position adjustment mechanism 60D described later.
As described above, 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.

<Configuration of horizontal positioning mechanism>
As shown in FIG. 7, the horizontal positioning mechanism 62 of the leading electrode torch position adjusting mechanism 60A (position adjusting mechanism 60) includes a knob 63, a feed screw member 68, a horizontal slider portion 67X of the slider 67, and a guide member which will be described later. 69 and the fastening member T2. Each torch (10, 20, 30) is moved by the horizontal positioning mechanism 62 by moving the horizontal slider portion 67X in the butting direction (X direction) via the feed screw member 68 by rotating the knob 63. The torch clamp 45 and the torches (10, 20, 30) together with the torch clamp mounting stay 46 connected to the horizontal slider portion 67X can be moved integrally with respect to the abutting direction, and the movement can be adjusted in the abutting direction. ing.

The knob 63 is a rotary operation knob for finely moving the leading electrode torch 10 in the abutting direction with respect to the base 50.
The feed screw member 68 is a screw rod-like member that rotates integrally when the knob 63 is rotated. The horizontal slider portion 67X is screwed into the central portion so as to be able to advance and retract. The portion 69a is cantilevered so as to be rotatable.
The horizontal slider portion 67X of the slider 67 includes a left and right guide portion 69a that rotatably supports the feed screw member 68, and a female screw portion 67Xb that is screwed into a male screw portion 68a formed on the feed screw member 68. As the feed screw member 68 rotates, it slides horizontally in the butting direction (X direction).
The guide member 69 is a member having a substantially grooved steel shape in plan view, and a pair of upper and lower guide shafts 69c that are inserted through the horizontal slider portion 67X and slidably support the horizontal slider portion 67X are installed. doing. As shown in FIG. 8, on the outer side surface of the guide member 69, the fastening members T5 are screwed into the four counterbore holes formed from the inner inner wall surface of the guide member 69 toward the vertical slider portion 67Y. The bolts are tightened so as to be in contact with the side surfaces of the vertical slider portion 67Y.
The fastening member T <b> 2 is a bolt that is screwed into the slider 67 from the side surface of the torch clamp mounting stay 46 and connects the torch clamp mounting stay 46 and the slider 67.

≪Configuration of clamp mechanism for filler wire torch≫
The filler wire torch 30 shown in FIGS. 9 to 10 includes a filler wire torch clamp mechanism 40C substantially the same as the preceding electrode torch clamp mechanism 40A provided on the preceding electrode torch 10 as described above, and an angle. An adjustment mechanism 44 is provided.

<Configuration of filler wire torch position adjustment mechanism>
As shown in FIGS. 9 to 10, the filler wire torch position adjusting mechanism 60 </ b> C moves the filler wire torch 30 in the horizontal butting direction (arrow c) in the same manner as the preceding electrode torch position adjusting mechanism 60 </ b> A of the preceding electrode torch 10. It has a horizontal positioning mechanism 61C that adjusts the position of the torch (30), but is not provided with a mechanism corresponding to the vertical positioning mechanism 61. That is, the filler wire torch position adjusting mechanism 60C moves the torch clamp 45C in the butting direction (arrow c direction) by sliding the slider 67C in the welding direction (Z direction) by rotating the knob 63C. It has a structure that can be done.
The filler wire torch position adjusting mechanism 60C includes a knob 63C, a feed screw member 65C, a fixing base 66C, and a slider 67C, and is disposed on the base 50, like the preceding electrode torch position adjusting mechanism 60A. The filler wire torch position adjusting mechanism 60C can also adjust the height in the vertical direction by interposing a spacer (not shown) with an appropriate thickness between the base 50 and the fixed base 66C. is there.

The number of knobs 63C for moving the filler wire torch 30 is one.
The feed screw member 65C is supported by a support plate portion 66Ca provided on the fixed base 66C and is disposed horizontally with respect to the base 50.
The fixed base 66C has a support plate portion 66Ca that holds both ends of the guide shaft 66c extending in the butting direction (X direction), and a sliding surface 66Ce on which the slider 67C slides. This is a member having a substantially groove-shaped steel shape, and is bolted to a predetermined position on the base 50.
The slider 67C slides on the horizontal sliding surface 66Ce in the horizontal direction (arrow c direction) in accordance with the rotation of the feed screw member 65C by the turning operation of the knob 63C, and moves the torch clamp 45C in the butting direction (X direction). ).

≪Base configuration≫
As shown in FIG. 4, the base 50 is used to place the fixed bases 66 and 66C of 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 at predetermined positions. Is a table for mounting, and is made of a thick metal plate. A long hole 50a (FIG. 2) into which a fastener T3 of a welding direction position adjusting mechanism 60D for fixing the fixing bases 66 and 66C to a predetermined position in the welding direction is movably inserted along the plate surface of the base 50. A plurality of reference) are formed. Further, the base 50 includes the right welding head portion vertical movement cylinder 81 (lifting device) (see FIG. 2) for moving the base 50 up and down, and a butt air cylinder 83 (moving in the butt direction) for moving the base 50 in the butt direction. Device), a welding direction air cylinder (moving device) (not shown), and a positioning dog portion 70 disposed so as to protrude from the base 50 in the butting direction of the welded member 1 are bolted.

≪Configuration of welding direction position adjustment mechanism≫
As shown in FIG. 11, the welding direction position adjusting mechanism 60D moves the fixed bases 66 and 66C placed on the base 50 horizontally in the welding direction, thereby leading the torch 10 for the leading electrode, the torch 20 for the trailing electrode, and the filler. The position of the wire torch 30 is adjusted and fixed to a predetermined position in each welding direction. The welding direction position adjusting mechanism 60D is configured so that the internal thread portion 66d formed in the fixing bases 66 and 66C, the long hole 50a formed long in the welding direction in the base 50, and the long hole 50a can be finely adjusted in the welding direction. A position adjusting fastener T3 that is movably inserted and screwed into the female thread portions 66d and 66Cd (see FIG. 10) of the fixing bases 66 and 66C to fix the fixing bases 66 and 66C at predetermined positions. It is configured.

≪Configuration of positioning dog≫
As shown in FIGS. 3 and 4, the positioning dog portion 70 has a horizontal position and a vertical position of the electrode torch (10, 20) and the filler wire torch 30 mounted on the base 50 with respect to the welded member 1. This is a device for accurately copying. The positioning dog portion 70 is moved together with the base 50 by a right welding head portion vertical movement cylinder 81 (see FIG. 2) (lifting device) and a butt air cylinder 83 (butting direction moving device) that moves the base 50 in the butting direction. The position can be adjusted. For this reason, since the positioning dog part 70 can judge the distance of a butt | matching direction when initially adjusting the position of each torch (10,20,30) with respect to the to-be-welded member 1, it makes it easy to determine the position of a butt | matching direction. be able to.

  As shown in FIGS. 11A and 11B, the positioning dog portion 70 has a substantially square thick plate shape fixed to the lower surface of the base 50 with a fastening member T <b> 4. The positioning dog part 70 is a long member 71 fixed to the base 50 in a horizontal state. In addition, you may provide the sensor which detects the proximity distance of the to-be-welded member 1.

≪Operation of welding equipment≫
Next, operation | movement of the welding apparatus S is demonstrated with reference to FIGS.
As shown in FIG. 1, when welding with the welding apparatus S, first, the lower plate 2 of the member to be welded 1 is arranged along the rail 150 between the leg portions 141 and 141 of the gantry frame 140, and the lower plate 2 The standing plate 3 is placed and fixed at a predetermined position above.
Next, the welding head part 4 shown in FIG. 2 is sent to the vicinity of the upper part of the welded portion 1a by the head unit device 200. And the welding head part 4 is sent to the height vicinity of the to-be-welded location 1a with the cylinder 270 for a vertical motion.

The fastening member T1 of the torch clamp 45 shown in FIGS. 8A and 8B is once loosened, and the axial direction of the leading electrode torch 10 (the trailing electrode torch 20) with respect to the welded portion 1a of the member 1 to be welded ( The positions in the direction of arrow a) and the direction around the axis (direction of arrow b) are adjusted.
In this case, the leading electrode torch 10 is a curved torch formed by bending or bending the bent portion 10a. Therefore, if the torch is rotated, the leading electrode 11 becomes the center of the holding hole 45a. It is possible to adjust the advancing angle and the receding angle of the preceding electrode 11 with respect to the welded portion 1a by rotating in the direction around the axis (in the direction of arrow b) around the line.

Next, the support shaft member 47 and the torch clamp support 48 of the torch clamp 45 are once loosened, and the vertical direction (Y of the leading electrode torch 10 (the trailing electrode torch 20) with respect to the welded portion 1a of the welded member 1 is determined. (Direction) is adjusted to an appropriate angle.
In the same manner, the position of the filler wire torch 30 in the axial direction and the direction around the axis is adjusted, and the angle in the vertical direction (Y direction) of the leading electrode torch 10 with respect to the welded portion 1a of the welded member 1 is appropriately set. Adjust to the angle.

  Next, as shown in FIGS. 3 and 7, the horizontal slider 67X that moves integrally with the torch clamp 45 is abutted by rotating the knob 63 of the horizontal positioning mechanism 62 to rotate the feed screw member 68. The position of the leading electrode torch 10 in the butting direction (X direction) is finely adjusted.

Further, as shown in FIGS. 4 to 6, by rotating the knob 64 of the vertical positioning mechanism 61 and rotating the feed screw member 65, the vertical slider portion 67Y that moves integrally with the torch clamp 45 is moved in the vertical direction. The position in the vertical direction of the leading electrode torch 10 is finely adjusted by moving in the (Y direction).
In the same manner, the position of the trailing electrode torch 20 in the vertical direction and the butting direction is finely adjusted.

  As shown in FIGS. 9 and 10, the filler wire torch 30 rotates the feed screw member 65C by rotating the knob 63C, thereby causing the slider 67C moving integrally with the torch clamp 45C to abut the direction. The position of the filler wire torch 30 in the horizontal direction is finely adjusted by moving in the direction of arrow c.

  When adjusting the position of each torch (10, 20, 30) in the welding direction, as shown in FIG. 11, the fastening force of the fastener T3 of the welding direction position adjusting mechanism 60D is loosened to fix the fixing bases 66, 66C. Move in the welding direction to make fine adjustments.

  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, the fastener T3 of the welding direction position adjusting mechanism 60D, and the angle adjusting mechanism. By rotating the support shaft member 47 and the torch clamp support 48, each torch (10, 20, 30) can be moved in all directions including the welding direction, the vertical direction, and the butting direction in the vertical and horizontal directions. The device is provided with filler wires 31 on a plurality of electrodes by appropriately adjusting the inter-electrode distance and the torch angle between the electrodes of each torch (10, 20, 30). However, it can be easily adjusted to the optimum welding conditions. In this case, since the knobs 63, 64, and 63C are easy to rotate, the positions of the torches (10, 20, and 30) are easily adjusted to optimum welding conditions even when the welding operation is started and during the welding operation. be able to. As a result, when welding the member 1 to be welded, a good bead can be formed, and the stability of the generated arc can be improved and the occurrence of spatter can be suppressed.

In addition, each torch (10, 20, 30) is positioned at an appropriate position, angle, and orientation as described above, and the welding head portion 4 is welded to the welded portion 1a of the member 1 to be welded by the welding direction moving device 110. It can be made to drive | work in a stable state and can be welded without generating a welding defect by moving along.
From this, the burden on the operator for fine adjustment of the position and the like of each torch (10, 20, 30) can be greatly reduced.
Moreover, it is freed from the work burden of reworking poor welding, and productivity can be greatly improved.

[Embodiment 2]
Next, Embodiment 2 will be described. In addition, the already demonstrated structure attaches | subjects the same code | symbol and abbreviate | omits the description. FIG. 12 is a diagram showing a second embodiment of the welding apparatus according to the present invention, and is a schematic perspective view showing a main part when welding a member to be welded while moving it with a moving device.

  In the first embodiment, as shown in FIG. 2, the welding apparatus S that welds the welded member 1 while moving the welding head portion 4 (welder) with the moving apparatus 100 has been described, but the present invention is limited to this. Is not to be done. For example, as shown in FIG. 12, the welding apparatus S1 is of a built-up type in which welding is performed while moving the member to be welded 1 with respect to the base 50 of the welding head portion 4 by the moving apparatus 100A. It doesn't matter. At this time, the torch support mechanisms 60A, 60B, and 60C do not have to be on the base 50, and may be directly attached to any part of the moving device 100A.

[Modification]
As mentioned above, although Embodiment 1 and 2 which concern on this invention were demonstrated, this invention is not limited to above-described Embodiment 1, 2, and can be suitably changed in the range which does not deviate from the meaning of this invention. . In addition, the already demonstrated structure attaches | subjects the same code | symbol and abbreviate | omits the description.
Moreover, in the said Embodiment 1, although the welding apparatus S was mentioned as an example in the case of welding the to-be-welded member 1 arrange | positioned in T shape, what is necessary is just what can be welded, moving the welding head part 4. FIG. The shape and material of the member 1 to be welded are not particularly limited.

In the first and second embodiments, the leading electrode torch clamp mechanism 40A, the trailing electrode torch clamp mechanism 40B, and the filler wire torch clamp mechanism 40C are configured with members having different shapes. It doesn't matter.
Further, 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 are configured by members having different shapes, but may be the same. The leading electrode torch 10 and the trailing electrode torch 20 may be plural by adding the leading electrode 11 and the trailing electrode 21 respectively. Further, the filler wire torch 30 may have a plurality of filler wires 31.
Further, the filler wire torch may or may not be energized.
Furthermore, as long as fine adjustment is possible, the shape of the filler wire torch may be a straight torch having the same specifications as the electrode torch.

  The parts that support the torches (10, 20, 30) of the torch clamps 45, 45C are provided with anti-loosening members such as spring washers, non-rotating wires, knock pins, split pins, etc., so that they can be held firmly for a long time. Also good.

DESCRIPTION OF SYMBOLS 1 To-be-welded member 1a To-be-welded location 2 Lower board (to-be-welded member)
3 Standing plate (member to be welded)
4 Welding head part 10 Leading electrode torch 11 Leading electrode (electrode)
20 Trailing electrode torch 21 Trailing electrode (electrode)
30 Filler Wire Torch 31 Filler Wire 40 Torch Clamp Mechanism 40A Torch Clamp Mechanism for Leading Electrode (Torch Support Mechanism)
40B Torch clamp mechanism for trailing electrode (torch support mechanism)
Clamp mechanism for 40C filler wire torch (torch support mechanism)
44 Angle adjustment mechanism 45, 45C Torch clamp 45a Holding hole 45b Notch groove 45c Screw hole 46 Torch clamp mounting stay 46a Support shaft member insertion hole 46b Arc-shaped long hole 47 Support shaft member 48 Torch clamp support 50 Base 50a Long hole 60 Position Adjustment mechanism 60A Lead electrode torch position adjustment mechanism (position adjustment mechanism)
60B trailing electrode torch position adjustment mechanism (position adjustment mechanism)
60C Filler wire torch position adjustment mechanism (position adjustment mechanism)
61 Vertical positioning mechanism 62 Horizontal positioning mechanism 63, 63C, 64 Knob 65, 65C, 68 Feed screw member 65a Male thread part 66, 66C Fixing base 66a, 66Ca Support plate part 66d Female thread part 67, 67C Slider 69 Guide member 70 Positioning dog part 80 Welding head movement device 81 Right welding head vertical movement cylinder (lifting device)
82 Cylinder for vertical movement of left welding head (lifting device)
83 Air cylinder for butt (butting direction moving device)
100, 100A moving device 110 welding direction moving device 120 traveling roller 130 traveling motor 140 gantry frame 150 rail 200 head unit device 210 stanchion 220 lateral direction guide 230 sliding plate 240 fixed frame 250 vertical motion frame 260 head unit lateral motion motor 270 vertical motion Moving cylinder S, S1 welding equipment (gas shield arc welding equipment)
T1 fastener T3 fastener

Claims (9)

A plurality of electrode torches having electrodes to which current is supplied from a power supply device;
A filler wire torch that is disposed between the plurality of electrode torches and supports the filler wire;
A plurality of torches for supporting the plurality of electrode torches and the filler wire torches, respectively;
A gas shielded arc welding apparatus comprising a base on which each torch clamp is supported,
And each of the angle adjusting mechanism, wherein the adjusting the installation angles of each torch clamp so each is rotated by a predetermined angle with said plurality of electrode torch and torch the filler wire respectively,
Each of the position adjustment mechanisms for moving the angle adjustment mechanism in all directions to adjust the positions of the plurality of electrode torches and the filler wire torches ,
The position adjustment mechanism is a vertical positioning mechanism that can adjust the position by moving the electrode torch clamps that respectively support the plurality of electrode torches of the torch clamps in the vertical direction;
A horizontal positioning mechanism capable of adjusting the position by moving each of the plurality of electrode torch clamps in the butting direction, and
The vertical positioning mechanism includes a vertical knob for rotating operation for moving the plurality of electrode torches in a vertical direction,
A feed screw member fixed to each of the vertical knobs;
A fixing base placed on the base, each having a support plate portion that is inserted and supported rotatably by the feed screw member;
Each of the plurality of electrode torch clamps has a female screw portion that is screwed into a male screw portion formed on the feed screw member, and slides with respect to the fixed base as the feed screw member rotates. A connected vertical slider;
The plurality of torch clamps for electrodes move in the vertical direction together with the vertical slider by rotating the vertical knob,
The horizontal positioning mechanism includes a horizontal knob for rotating operation for moving the plurality of electrode torches in a butting direction, and
A feed screw member fixed to the horizontal knob;
A guide member having a support plate portion that is inserted and supported rotatably by the feed screw member;
Each of the plurality of electrode torch clamps has a female screw portion that is screwed into a male screw portion formed on the feed screw member, and slides with respect to the guide member as the feed screw member rotates. A connected horizontal slider;
The plurality of electrode torch clamps move together with the horizontal slider in the butting direction by rotating the horizontal knob,
The vertical positioning mechanism and the horizontal positioning mechanism are respectively arranged on the base by connecting the vertical slider and the guide member supporting the horizontal slider portion by a fastening member. Gas shield arc welding equipment. The vertical positioning mechanism can adjust the position by moving the filler wire torch clamp that supports the filler wire torch among the torch clamps in the vertical direction,
A vertical knob for rotating operation for moving the filler wire torch in the vertical direction;
A feed screw member fixed to the vertical knob;
A fixed base that has a support plate portion that is inserted and supported rotatably by the feed screw member, and is placed on the base;
It has a female screw part that is screwed into a male screw part formed on the feed screw member, and slides with respect to the fixed base as the feed screw member rotates, and the filler wire torch clamp is connected. A vertical slider,
The filler wire torch clamp moves in the vertical direction together with the vertical slider by rotating the vertical knob,
The horizontal positioning mechanism can adjust the position by moving the filler wire torch clamp in the butting direction,
A horizontal knob for rotating operation for moving the filler wire torch in the butting direction;
A feed screw member fixed to the horizontal knob;
A guide member having a support plate portion that is inserted and supported rotatably by the feed screw member;
It has a female screw part that is screwed into a male screw part formed on the feed screw member, and slides with respect to the guide member as the feed screw member rotates, and the filler wire torch clamp is connected. A horizontal slider,
The filler wire torch clamp moves in the butting direction together with the horizontal slider by rotating the horizontal knob,
The vertical positioning mechanism and the horizontal positioning mechanism are mounted on the base by connecting the vertical slider and the guide member supporting the horizontal slider portion by a fastening member. The gas shielded arc welding apparatus according to claim 1. The angle adjusting mechanism includes a torch clamp mounting stay provided adjacent to each outside of the welding line direction of each torch clamp,
A spindle member inserted into a spindle member insertion hole formed in each torch clamp mounting stay;
A torch clamp support that is fastened to the torch clamp through an arc-shaped elongated hole formed in each torch clamp mounting stay,
Each of the torch clamp supports is provided so as to be able to adjust the angle in the vertical direction of the angle adjusting mechanism by loosening a tightening degree fastened to the torch clamp .
The gas shielded arc welding apparatus according to claim 2 , wherein the horizontal slider is connected to the outside of each torch clamp mounting stay in the welding line direction by a fastening member . Wherein the base includes a said plurality of electrode torch and the filler wire torch to a fastener for fixing the fixing base to the base respectively and can move the welding direction along the plate surface of the base Long holes to be inserted are formed ,
The torch clamp of the filler wire torch is arranged on the rear side of the butting direction in a plan view than the torch clamps of the plurality of electrode torches,
The gas shielded arc welding device according to claim 3 , wherein the gas shielded arc welding device is disposed below the torch clamps of the plurality of electrode torches when viewed from the front . The electrode torch attached to the position adjusting mechanism is a curved torch formed by curving from a support portion supported by the torch clamp toward the tip of the electrode torch, and each torch clamp is respectively The gas shielded arc welding according to any one of claims 2 to 4 , wherein the advancing angle and the receding angle with respect to the welded part can be adjusted by loosening and rotating around the axis. apparatus. Each torch clamp has a holding hole into which the electrode torch and the filler wire torch are rotatably inserted in the circumferential direction;
A notch groove formed in the holding hole,
A screw hole formed orthogonal to the notch groove;
A fastening member that is screwed into the screw hole and adjusts the interval between the inner walls of the notch groove, and
The fastening member can rotate the electrode torch and the filler wire torch in the circumferential direction by loosening the tightening force of the screw hole, and by increasing the tightening force of the screw hole, electrode torch, gas shielded arc welding apparatus according to any one of claims 2 to 5, characterized in that each hold torch the filler wire. The base is a lifting device that lifts and lowers the base;
A butting direction moving device for moving the base in the butting direction;
Are arranged so as to protrude in a direction abutting from said base, according to claim 3 or claim, characterized in that it comprises a positioning dog unit for determining copying the butt position and vertical position of the electrode torch and torch the filler wire Item 5. A gas shielded arc welding apparatus according to Item 4 . The gas shielded arc welding apparatus according to any one of claims 1 to 7 , wherein the base is welded while being moved together with the electrode torch and the filler wire torch by a moving device. The gas shielded arc welding device according to any one of claims 1 to 7 , wherein welding is performed while moving a member to be welded to the base by a moving device.

Images