JPS59144583A - Nonconsumable electrode type semiautomatic welding device - Google Patents

Abstract

PURPOSE:To improve feeding property of a filler wire and to permit easy welding operation in nonconsumable electrode type welding using the filler wire by providing adjustably a wire reel and a feed mechanism thereof to a holder for gripping a nonconsumable electrode. CONSTITUTION:A wire 57 drawn out from a filler wire reel 56 housed in a cover 58 is fed by a feed roller, pressing piece, etc. and is brought through pipes 14, 13, 15, 16, 21 to a prescribed position. The sealing gas and feed and waste cooling water entering the insulating part 35 of a member 50 for supporting a nonconsumable electrode through a hose 52 or the like is supplied through slits 28, 33 (34) and through respective pipes 27 and 30, 32 to an electrode head 51. A wire guiding tube 21 is directionally changed and is extended corontracted by means of a nut 22 and a ring 162. A cable 53 and hoses are supported in the lower part of a torch holder so as to cross the feed line for the wire 57 in this device and therefore the workability in semiautomatic welding in all attitudes is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a so-called general-purpose welding process in which a worker holds a torch holder and simultaneously and arbitrarily moves the tip part 14 of a non-consumable electrode and a filler wire. The present invention relates to a non-consumable ``crystalline semi-automatic welding device'' that has a high level of performance.

Prior Art Conventionally, as this type of apparatus, one shown in FIG. 1 has been used. That is, cables and hoses 52 and 53 such as a control cable for a torch switch, a power cable for power supply, and a hose for supplying shielding gas are connected to the grip part 3' of a torch body 1' equipped with a non-consumable electrode, and the torch body The attachment member 102 supported at the tip of the torch body 1' and the exit side of the wire feeding device 100 are connected by a flexible conduit 101, and an operator can attach the clamp part 3 of the torch body 1'
Welding was performed by holding the torch body 1' and arbitrarily moving the torch body 1' while feeding the filler wire 57 wound around the wire reel 56 by the feeding device 100.

By the way, in this type of semi-automatic welding device, welding of various weld joints is carried out in all welding positions while the operator holds the grip 3' of the torch body 1', but the conventional device described above As the bending state of the flexible conduit 101 changes as the welding position changes, the frictional force applied to the filler wire within the flexible conduit changes, and as a result, the filler wire is fed unevenly. This caused welding defects. Also, in order to widen the working range, it is possible to lengthen the flexible conduit, but since frictional force acts on the filler wire within the flexible conduit, if it is made too long, the filler wire may buckle and feed. supply becomes impossible. For this reason, the flexible conduit is limited to an appropriate length, which has the disadvantage that the working range is also limited. In addition, wire buckling due to the frictional force between the flexible conduit and the filler wire becomes a problem, so it is not possible to automatically feed the filler wire for thin wires or materials with low mechanical strength such as aluminum. Therefore, there was a problem in that the filler wire had to be manually operated and supplied.

Furthermore, since the flexible conduit 101 supported by the conventional throat member 102 at the tip of the torch main body 1' is greatly curved, the flexible conduit 101 becomes an obstacle and the workability is not good.

Purpose of the Invention The present invention has been made in view of the above problems, and it is possible to feed the filler wire uniformly even if the mechanical strength of the filler wire is small, and the work range is wide and the workability is high. The purpose is to provide a non-consumable, semi-automatic welding device with so-called versatility.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to illustrated embodiments.

2 to 9, 1 is a torch body made of an electrically insulating member, 2 is a pedestal integrally supported by the torch body 1, 3 is a torch holder connected to the torch body 1, and 4 is a torch body made of an electrically insulating member.
is a wire feeding drive machine included in the torch holder 3,
For example, an electric motor or a pressure fluid-operated rotary machine, 5 is a wire feed roll suitably connected to the drive machine 4, and 6 is an L-shaped bar rotatably supported on the base 2 by the wire feed roll 5 pin. A pressure roll 6 is pivotally supported at one end of L
The pressure roll 6 is biased toward the feed roll 5 by a compression spring 11 disposed between the threaded rod 9 screwed to the other end of the shaping bar 8 and the base 2.

A wire guide 12 is detachably connected to the torch main body l via the base 2, and is supported by, for example, a split clamp mechanism disposed on the base 2. 13 is a first cylindrical body supported on the pedestal 2; 14 is a cap that is detachably supported on the end of the first cylindrical body 13 in the X2 direction; for example, a screwed base; 15 is a first cylindrical body A second cylindrical body is detachably supported at the end of the cylindrical body 13 in the It is firmly fastened. This second cylindrical body 15
0) A hole 151 is formed over a predetermined section in the X2 direction from the end in the Xi direction, and is slightly shorter than the hole 151 S4
Four slits 152 passing through in the radial direction are formed.

Reference numeral 16 denotes a movable cylindrical body having a protrusion 161 that is enclosed in the hole 151 of the second cylindrical body 15 and retracts into the slit 152.
The protrusion 161 is formed to be slightly thicker than the outer diameter of the portion where the protrusion 161 is formed, and a screw 162 is formed on the outside of the protrusion 161 . Further, a tapered portion 163 protruding outward is formed at the end of the movable cylindrical body 16 in the X1 direction, and the hole 1 extends from the end in the X1 direction to a predetermined section in the X2 direction.
64 is formed and is close to the tapered portion 163
A screw 165 is threaded on the outside of the direction. moreover,
A slit 166 is formed that radially penetrates from the end of the movable cylindrical body 16 in the X1 direction over a predetermined section in the X2 direction.

Reference numeral 17 denotes a sleeve having a screw 171 therein, and this sleeve 17 is rotatably inserted into a predetermined position in the X1 direction of the second cylindrical body 15 and positioned in the axial direction. In the illustrated case, the sleeve 17 is positioned in the axial direction by a spacer 18 and a nut 19. Of course, the nut 19 can also be replaced with a snap ring. 21 is a curved cylindrical body, and the end of this cylindrical body 21 is movable.
The screw 16 of the movable cylindrical body 16 is inserted into the hole 164 of 6.
By rotating the nut 22 screwed into the nut 22 in the X2 direction, the diameter of the slit 166 is reduced, and the movable cylindrical body 16, the nut 22, and the cylindrical body 21 are fastened together. 13 above
22 constitute the wire guide 12. In the wire guide 12, when the sleeve 17 is rotated appropriately, the movable cylindrical body 16 is Move in the X1 direction or the X2 direction. For this reason, the exit position of the filler wire 57 is
The direction can be adjusted as appropriate. Reference numeral 23 denotes a cylindrical body having a flange 231 made of an electrically insulating member disposed in the middle part of the wire guide 12. For example, a radial groove 232 is formed in the flange 231 of this cylindrical body 23, and a groove 232 is formed in the flange 231. A notch 234 substantially perpendicular to the long axis is formed in the small diameter step 233 disposed in the X2 direction. Reference numeral 24 denotes an arm-shaped body that is electrically insulated from the outside. For example, this arm-shaped body 24 includes a cylindrical body 25 made of a material with good electrical conductivity such as copper or copper alloy, and a pipe 26 for supplying shielding gas. .27, an annular space 28 communicating these tubes, tubes 29.30 for cooling fluid supply, tubes 31.32 for cooling fluid outflow, and tubes 29.30 and 3, respectively.
1.32, and an electrically insulating member 35 electrically covering these as appropriate.

In the illustrated case, the arm-shaped body 24 is formed by molding. In this case, in the electrically insulating member 35 to be molded, a part of the round hole 351 is formed in a flat surface 352, as shown in FIG.
The arm-like body 24 and the cylindrical body 23 are positioned by fitting with them.

Note that a notch 153 is formed on the outside of the approximately intermediate portion of the second cylindrical body 15 and is approximately perpendicular to the long axis.
53 and the groove 232 of the cylindrical body 23, positioning of the second cylindrical body 15 and the cylindrical body 23 is performed. Reference numeral 36 denotes a spacer made of an electrically insulating member, and the spacer 36, the cylindrical body 23, and the arm-shaped body 24 constitute a support member 50. It is positioned and fixed in the axial direction outside the cylindrical body 15 of No. 2. Of course, the support member 50 can be made integral by molding. Second cylindrical body 1
A so-called known non-consumable electrode holding member 51 is supported by the supporting member 50 disposed at the wire guide 12 so as to be oriented toward the distal end of the wire guide 12 .

Reference numeral 52 denotes flexible hoses including hoses for shielding gas and cooling fluid, and the hoses also include flexible cables for supplying power to the non-consumable electrodes. Power is supplied by this cable as appropriate through shield gas pipes 26, 27, cooling fluid pipes 29 to 32, and the like. The hoses 52 are connected to the support member 50 in a direction that intersects the wire feed path in the Supported. Reference numeral 53 indicates a lever at the bottom of the torch holder 3 for operating the edge device 54, and reference numeral 56 indicates a welding wire 57.
It is a wire reel wound with a wire reel, and is supported by the torch main body 1 in a detachable and rotatable manner. These wire reels 56
．． The feed roll 5, pressure roll 6, etc. are included in the torch body 1.
It is covered with a protective cover 58 that can be opened and closed.

Of course, the other ends of the hoses 52 and the control cable 53 are connected to a shielding gas supply source, a cooling fluid supply source, a cooling fluid outlet, and an electrical control device as appropriate.

Reference numeral 59 denotes an erroneous activation prevention switch involved in generating and stopping high frequency waves related to the non-consumable electrode, which is disposed in the torch body 1 and can be switched to two stages: a welding side and an adjustment side. When the filler wire tinging switch 60 is operated, only the filler wire 57 is appropriately fed with the high frequency stopped.

The erroneous activation prevention switch 59 is normally switched to the welding side during welding work.

The above embodiment takes into consideration that most of the workers in Japan are right-handed, and when the lever 55 is operated appropriately while holding the torch holder 3 with the right hand, the non-consumable electrode is applied to the base material. is melted, and a filler wire 57 is continuously or intermittently supplied to this molten pool to perform welding using a non-consumable electrode.

In the above, since the wire guide 12 does not have flexibility, the filler wire 57 fed by the wire feeding driver 4 is in a steady state of contact within the wire guide 12. The feed is uniform, thus ensuring uniform welding results. In addition, the wire reel is installed in the torch body and does not use the conventional flexible conduit, so it can be used even with materials with low mechanical strength such as small diameter wire or aluminum wire. The working range was limited by the length, but since this type of flexible conduit is not used, the working range is extremely wide. In addition to simplifying the structure near the welding position, various cables and hoses are supported at the bottom of the torch holder so as to intersect with the feed path of the filler wire, making it easier to pull the cables during welding. The rotational load acts on the worker's grip, but from an ergonomic perspective, the worker is more durable against the forces acting in the vertical direction than the forces acting in the front-back and left-right directions that act on the hand. , easy to operate,
Therefore, in this kind of versatile welding work that can be applied to all welding positions, the fatigue level of the operator is lower than in the past, and the welding workability is extremely good.

In the above embodiment, the wire guide 12 and the non-consumable electrode holding member 51 are such that the plane including the axis of the wire guide 12 and the axis of the non-consumable electrode is the axis of the wire feeding drive 4, Although the positions are set to be orthogonal,
By shifting the position settings in this way, the operator can carry out welding by simply moving the torch body in the Y1 direction or Y2 direction while holding the torch holder 3 without displacing it in the Z direction, thereby simplifying the welding operation. It's easy. Despite this, depending on the shape of the object to be welded, the welding work conditions, etc., the connection between the torch main body 1 and the wire guide 12 may be loosened and the wire guide 12 may be moved by a small amount around the axis of the wire guide 12. The position of the wire guide can also be set while the wire guide is rotated. In the above example,
Since the wire guide 12, the support member 50, and the non-consumable electrode holding member 51 are integrally supported, welding can be performed immediately with the wire guide 12 set to rotate within a small range relative to the torch body l. can.

10 to 12 are views showing other embodiments of the present invention, in which a wire guide 12 and a non-consumable electrode holding member 5 are shown.
The support member 5o that connects the wire guide 1 with the wire guide 12 is composed of a first support member that is fixed to the wire guide 12 and a second support member that is rotatable. That is, the arm-shaped body 24
are cylindrical bodies 2 formed with annular spaces 28, 33 and 34, respectively.
5 and an insulating member 35 are integrally molded, and the arm-shaped body 24 is fitted into the cylindrical body 23 made of an electrically insulating member so as to be integral with the cylindrical body 23 in the direction of rotation.

The arm-shaped body 24 and the cylindrical body 23 constitute a first support member 501. Reference numeral 37 denotes a cylindrical body that rotationally covers the outer circumference of the cylindrical body 25 in the x2 direction.
31, 341 are formed, and tubes 26, 29, 31 communicating with the respective annular spaces are fixed. The respective annular spaces 281, 331, 34.
The structure is such that fluid does not flow out from 1. Further, the outside of the cylindrical body 37 is covered with an electrically insulating member 38, and the cylindrical body 37, the electrically insulating member 38, and the spacer 36
A second support member 502 is configured. 1st above
Support member 5o1. and the second support member 502 constitute a support member 5o.

Note that by operating the fastener 39, the first and second
The support members 501 and 502 are maintained in a one rotation state or an integral state with respect to each other. In the illustrated case, slits are formed in the x2 direction end of the cylindrical body 37 in the circumferential direction and the radial direction, and a fastener 39 is provided to tighten the slit. Of course, the first and second support members 50.1, 50
2 can be integrated by molding.

In the apparatus shown in FIGS. 10-12, the fasteners 39 are loosened and the first and second support members 501,502
After loosening the connection between the wire guide 12 and the torch main body l and arbitrarily rotating the wire guide 12 around the axis of the wire guide 12 in a state where they can freely rotate relative to each other,
When the wire guide 12 and the torch main body 1 are connected, the wire guide 12 and the first support member 501 are integrally supported, so the tip of the wire guide 12 and the non-consumable electrode are in the same position as each other. This means that they were rotated at the same time while maintaining their relationship. Note that the wire guide 12 and the second support member 5
02 is rotatable, so after the wire guide 12 and the like are rotated, the second support member 502 to which the cables 52 are connected is moved to a position similar to the initial state with respect to the torch body 1 by the fastener 39. Positioned via. Figure 13 Oh,
14 are views showing still another embodiment of the present invention, which has substantially the same structure as that shown in FIGS. 10 to 12, and is of an air-cooled type. That is, the cylindrical body 37 in which the annular space 281 is formed, the shielding gas supply pipe 26 fixed to the cylindrical body 37 so as to communicate with the annular space, and the outer circumference of approximately half of the cylindrical body 37 in the X2 direction. The first wire guide 12 is fixed to the wire guide 12 by an electrically insulating member 38 that covers the spacer 36 and a cylindrical body 23 made of an insulating member that supports the spacer 36 and the cylindrical body 37 integrally in the rotational direction. A support member 501 is configured. As shown in FIG. 15, a notch 372 perpendicular to the long axis is formed at the end of the cylindrical body 37 in the Xt force direction.
The annular space 2 is connected to the annular space 2 through a cylindrical body 25 that rotationally covers the outer circumference of the cylindrical body 7 in the X1 direction, and an annular space 28 provided in the cylindrical body 25.
a tube 27 fixed to the cylindrical body 25 so as to communicate with the tube 81;
The arm-shaped body 24 is constituted by the electrically insulating member 35,
This arm-shaped body 24 forms a second support member 502 that is rotatable with respect to the wire guide 12 .

In the above, when the fastener p9 is loosened, the second support member 5'o2 that supports the non-consumable electrode holding member 51 becomes rotatable with respect to the wire guide 12, and the second support member 502 is rotated as appropriate. In the moved state, the first and second support members 5o1°502 are integrally fastened by the fasteners 39. In this case, after appropriately rotating the non-consumable electrode, the position is adjusted so that the tip of the wire guide 12 faces the direction of the non-consumable electrode.

FIG. 16 is a diagram showing still another embodiment of the present invention, in which the X of the wire guide 12 of the apparatus shown in FIG.
Appropriate portions in two directions are curved in at least one direction, for example, in the Z2 direction. This configuration may be advantageous depending on the shape of the object to be welded. Of course, workability may be improved by appropriately setting the rotational position of the wire guide at the connecting portion between the wire guide and the torch body. In this case, as shown in FIGS. 10 to 12 or 13 and 14, the support member supporting the non-consumable electrode is fixed to the wire guide, and the first support member is rotatable. It is advantageous if the non-consumable electrode is configured with a second supporting member, since the position of the non-consumable electrode can be arbitrarily selected.

In the above-mentioned embodiments, if the position of the non-consumable electrode is rotatably selectable with respect to the torch body, it can be used regardless of the handedness of the operator. In this case, by rotating the position of the non-consumable electrode around the feed path of the filler wire, the device can be realized compactly by simply considering the exchange of shielding gas, cooling fluid, power supply, etc. It can be used as a device.

As described above, the second cylindrical body 1 is attached to the wire guide 12.
5 and a movable cylindrical body 16, and a sleeve 17 that is screwed onto the cylindrical body 16, the wire can be moved easily, resulting in good workability. In spite of this, the exit position of the filler wire can be adjusted by a double nut method, a split clamp method, a radial set screw method, or the like.

Furthermore, the first cylindrical body 13 and the second cylindrical body 15 of the wire guide 12 can be integrally formed as appropriate.

Of course, it is preferable to use a cooling fluid, but an air-cooled system is also possible. Furthermore, the wire guide may include a power supply means, and the filler wire may be heated by the power supply means. Furthermore, the structure can be simplified by positioning the second cylindrical body 15 and the fixed side of the support member 5o with respect to the rotational direction by mechanically securing the second cylindrical body 15 and the fixed side of the support member 5o. It can also be supported on the second cylindrical body 15 using a split clamp, a set screw, or the like. Further, a removable liner can also be provided on the shaft core of the wire guide.

Although various preferred embodiments of the present invention have been shown above, the present invention is not limited to these embodiments.
Various modifications can be made by appropriately combining the parts of the above embodiments or replacing each part with an equivalent member.

FIGS. 17(a) and 17(b) are diagrams for explaining different implementation outlines of the present invention, and the advantages and disadvantages of the two will be explained.

In general, if the heat receiving efficiency of the workpiece due to the arc generated between the non-consumable electrode and the workpiece deteriorates, the preheating effect of the workpiece becomes insufficient, resulting in fusion between the workpiece and the molten metal. A defect occurs. Therefore, the angle θl formed by the non-consumable electrode with respect to the object to be welded is appropriately selected to be large. Furthermore, if the filler wire is directly exposed to the arc, it becomes particles and drops, resulting in uneven welding results, which is undesirable.For this reason, it is desirable to feed the filler wire to the molten pool with as little exposure to the arc as possible. ing. For this reason, the supply angle of the filler wire to the workpiece: 02 is selected to be appropriately small. Figure 17 (a) and (b) considering these
Similar welding results are obtained in both cases, but in the case shown in Fig. 17(a), the filler wire is fed while unwinding from the wire reel, and is fed in a straight line through a straight wire guide. However, there is a problem in that the various parts of the wire guide get in the way and make it difficult to observe the welded part. However, Fig. 17(b)
The wire guide shown in Figure 1 uses a wire guide whose tip is curved toward the non-consumable electrode, making it easier to observe the weld, and requiring less space in the Y direction for the device. Moreover, since the angle formed between the torch holder and the non-consumable electrode does not become extremely large, workability is good.

In addition, in this type of non-consumable electrode type semi-automatic welding device, by operating the lever of the torch holder, a high frequency is applied between the non-consumable electrode and the workpiece or the auxiliary electrode, and an arc is generated. After the object to be welded is suitably melted by this arc, the welding wire is electrically controlled to be fed. By the way, in addition to the above-mentioned welding operation, in order to check the feeding state of the filler wire, it is usually carried out to feed only the filler wire by an inching operation. If a high frequency similar to that during welding is generated during this wire inching operation, there is a risk of personal injury.

As in this second invention, there are two parts on the welding side and the adjustment side.
Accidents can be prevented by providing a switch on the torch body to prevent accidental activation. In other words, when the false start prevention switch is switched to the adjustment side, it is electrically controlled so that the crystal frequency is not generated, and only the filler wire is fed by operating the lever or the separately installed inching switch. It can be done.

In addition to the effects of the invention, in the first invention, since the wire guide does not have flexibility, the filler wire fed by the wire feeding drive machine is in a steady state of contact within the wire guide. Therefore, the feed of the filler wire becomes uniform, and therefore uniform welding results can be reliably obtained. In addition, the wire reel is installed in the torch body and does not use the conventional flexible conduit, so it can be used even with materials with low mechanical strength such as small diameter wire or aluminum wire. The working range was limited by the length, but since this type of flexible conduit is not used, the working range is extremely wide. In addition to simplifying the structure near the welding position, various cables and hoses are supported at the bottom of the torch holder so as to intersect with the filler wire feed path, making it easier to operate. Therefore, in this kind of versatile welding work that can be applied to all welding positions, the degree of fatigue of the operator is weaker than in the past, and the welding workability is extremely good.

Furthermore, in addition to the effects of the invention of Sui Tei 1, Sui Tei 2's invention also has an accidental activation prevention switch that is involved in generating and stopping the high frequency associated with the non-consumable electrode, which is disposed in the torch body. If the start-up prevention switch is switched to the adjustment side, no high frequency is generated, and therefore only the filler wire can be fed as appropriate without inducing personal injury. Moreover, in this case, since the erroneous activation prevention switch is disposed on the torch body, the switch can be easily switched. In addition, when only feeding the filler wire, it is possible to electrically control the feed of the filler wire by operating the lever 55 by switching the erroneous activation prevention switch. It is more advantageous to arrange the inching switch on the torch body, and in the vicinity of the erroneous start prevention switch, because the erroneous start prevention switch and the inching switch can be easily operated.

[Brief explanation of drawings]

3 is a partially cutaway front view showing the embodiment; FIG. 3 is a plan view of FIG. 2 with the cover removed; FIG. 4 is a partially cutaway view of the main part of FIG. 3; and FIG. , sectional views shown by the harbor line in FIGS. 12 and 14, respectively, and FIG.
2 and 14, respectively, are cross-sectional views shown by the harbor line,
FIG. 7 is shown by the harbor line in FIG. 4 and FIG. 12, respectively,
8 is a sectional view taken along the line 2-2 in FIG. 4, FIG. 9 is a sectional view taken along the Hoch line in FIG. 4, and FIGS. 11 is a partially cutaway plan view of FIG. 10, which corresponds to FIG. 3;
Fig. 12 is a partially expanded view of the main part of Fig. 11, and Fig. 14 is a partially developed view of the main part of Fig. 13,
Fig. 15 is a sectional view taken along the line H--H in Fig. 14,
FIGS. 7(a) and 7(b) are diagrams for explaining different implementation outlines of the present invention. 1...Torch body, 3...Torch holder, 4...
・Wire feeding drive machine, 12...Wire guide, 50
...Supporting member, 51...Non-consumable electricity holding member, 5
2...Hoses, 53...Control cable, 59...
- Erroneous alarm 111 prevention switch, 60... Inching switch. Agent: Patent Attorney Hiroshi Nakai Spontaneous writing of procedural amendment March 4, 1980 Commissioner of the Japan Patent Office 1. Indication of the case 1988 Patent Application No. 19100 2. Name of the invention Non-consumable electrode type semi-automatic welding device 3 , Person making amendment, case and relationship Patent applicant: 2-1-11 Tayo, Yodoyo-ku, Osaka City (02G) Osaka Transformer Co., Ltd. Ne1-4 Address of agent: 1 Yodoyo-ku, Osaka City, 532 Ko 112-chome 1
No. 11 479-

Claims (1)

[Claims] 1. A non-consumable electrode type semi-automatic welding device using a non-consumable electrode and a filler wire, which includes a wire reel, a torch holder containing a wire feeding drive, and a flexible welding device. A non-consumable electrode holding member is connected to the torch main body I, and a non-consumable electrode holding member is connected to the middle part of the wire guide in the direction of the distal end of the wire guide via a support member disposed in a commercially insulated manner with respect to the wire guide. A non-consumable electrode type % type % type % type % type % type % type % type of non-consumable electrode which is tilted and supports a shield gas supply cable and a power supply cable to the non-consumable electrode holding member in a direction intersecting the wire feeding path on the support member. 2. The semi-automatic welding device according to claim 1, wherein the member is configured to be rotatable within a small range around the axis of the wire guide. 3. The wire guide and non-consumable electrode holding member are:
The semi-automatic device according to claim 1 or 2, wherein a plane including the axes of the wire guide and the non-consumable electrode is positioned substantially perpendicular to the axis of the wire feeding drive machine. Welding equipment. 4. The support member includes a first support member fixed to the wire guide and a rotatable second support member, and a non-consumable electrode holding member supported via the support member. The semi-automatic welding device according to claim 1, wherein the semi-automatic welding device can freely set the rotational position about the axis of the wire guide. 5. The wire guide and the non-consumable electrode have their respective distal ends inclined in two directions with respect to the wire path immediately after the wire feeding drive device.
Semi-automatic welding equipment as described in Section 2 or Section 4 @. 6. The semi-automatic welding apparatus according to any one of claims 1 to 5, wherein the wire guide includes a power supply means, and the filler wire is heated by the power supply means. 7. 7. The semi-automatic welding apparatus according to claim 1, wherein the wire guide has a tip end curved toward the non-consumable electrode. 8. A non-consumable electrode type semi-automatic welding device using a non-consumable electrode and a filler wire, which includes a wire reel, a torch holder containing a wire feeding drive, and a non-flexible wire guide. A non-consumable electrode holding member is connected to the torch body and is disposed in the middle of the wire guide in an electrically insulating manner with respect to the wire guide, and the non-consumable electrode holding member is inclined toward the distal end of the wire guide. The torch body carries the shielding gas supply cable and power supply cable to the non-consumable electrode holding member in the direction intersecting the wire feed path, and also includes an accidental activation prevention switch involved in generating and stopping the high frequency related to the non-consumable electrode. A non-consumable electrode type semi-automatic welding device equipped with 9. The semi-automatic welding device according to claim 8, wherein the support member is configured to be rotatable within a small range around the axis of the wire guide. 10. The wire guide and the non-consumable electrode holding member are positioned so that a plane including the axes of the wire guide and the non-consumable electrode is substantially perpendicular to the axis of the wire feeding drive machine. A semi-automatic welding device according to claim 8 or 9. 11. The support member includes a first support member fixed to the wire guide and a rotatable second support member, and a non-consumable electrode holding member supported via the support member. The semi-automatic welding device according to claim 8, wherein the semi-automatic welding device can freely set the rotational position about the axis of the wire guide. 12. The wire guide and the non-consumable electrode are semi-automatic welding devices, with their respective tip ends located immediately after the wire feeding drive. 13. The semi-automatic welding apparatus according to any one of claims 8 to 12, wherein the wire guide includes a power supply means, and the filler wire is heated by the power supply means. 14. The semi-automatic welding apparatus according to any one of claims 8 to 13, wherein the wire guide has a tip end curved toward the non-consumable electrode.