JP3225726U - Auxiliary equipment - Google Patents

Abstract

An assisting device is provided that can suppress the influence of shaking of an operator's hand when operating a torch. An assisting device (1) is attached to a torch (T) having a nozzle portion (N) and a projecting portion (P) protruding from the nozzle portion (N), and assists the operation of the torch (T) when welding an iron plate with the torch (T). The auxiliary device 1 includes a fixing portion 2 fixed to the nozzle portion N, an extending portion 3 extending from the fixing portion 2 along the nozzle portion N in a protruding direction of the protruding portion P, and a protruding direction from the extending portion 3. And a contact portion 4 extending at least partially to the iron plate during welding. The auxiliary device 1 suppresses shaking of the operator's hand of the torch T by the contact portion 4 contacting the iron plate during welding. [Selection diagram] FIG.

Description

  The present invention relates to an auxiliary device attached to a torch used for welding an object to be welded and assisting operation of the torch at the time of welding.

  For example, Patent Document 1 discloses a torch in which a magnet is attached so as to be slightly away from a plate (workpiece) to be welded or cut. When the magnet of the torch attracts the plate (object to be processed) by magnetic force, the torch is indirectly supported by the plate (object to be processed) by the magnetic force, and the burden on the operator of the torch is reduced.

Japanese Utility Model Publication No. 51-18327

  In the device of Patent Document 1, the torch is supported by the magnetic force of the magnet, but the tip of the torch is not supported at all. Therefore, if the operator's hand trembles during operation of the torch, the tip of the torch also trembles, which may adversely affect the torch operation during processing.

  An object of the present invention is to provide an auxiliary device that can suppress the influence of shaking of an operator's hand when operating a torch.

Means for solving the problems and effects of the invention

The auxiliary device of the present invention is
Nozzle portion, and a protrusion projecting from the nozzle portion, attached to a torch having a torch, when assisting the operation of the torch when welding the welding target with the torch,
A fixing part fixed to the nozzle part,
An extending portion extending from the fixed portion along the nozzle portion in the protruding direction of the protruding portion,
A contact portion extending in the protruding direction from the extension portion and at least partially contacting a welding target at the time of welding;
With
When the contact portion comes into contact with the welding target at the time of welding, the vibration of the hand of the torch operator is suppressed.

  The auxiliary device of the present invention can suppress the influence of shaking of the hand of the operator of the torch by contacting the contact portion with the welding target at the time of welding.

In the embodiment of the present invention,
The extension has a rod-shaped member extending along the axial direction,
The fixing unit has a holding unit that can hold the rod-shaped member at an arbitrary position in the axial direction, and an adjustment mechanism that can adjust the position where the rod-shaped member is held.

  According to this, by adjusting the position at which the rod-shaped member (extended portion) is held by the adjusting mechanism, the position at which the contact portion extending from the extended portion comes into contact with the welding target can be adjusted.

In the embodiment of the present invention,
The extension is a first extension,
The contact portion is a first contact portion,
A second extending portion extending from the fixed portion in the protruding direction along the nozzle portion;
A second contact portion extending from the second extension portion in the protruding direction and at least partially contacting a welding target at the time of welding;
Is provided.

  According to this, since the second contact portion contacts the welding target together with the first contact portion, it is possible to further suppress the influence of the shaking of the hand of the operator of the torch.

In the embodiment of the present invention,
The second contact portion is
It is slidable on the surface of the welding target, comprising a bearing portion having an axis in a direction orthogonal or substantially orthogonal to the direction in which the welding target is welded,
At the time of welding, at least a part of the first contact portion comes into contact with the welding target, and the torch moves along a direction in which the bearing slides on the surface of the welding target and welds the welding target.

  According to this, the torch can be smoothly moved at the time of welding by the bearing portion. In this specification, “substantially perpendicular” means that they intersect with a deviation of ± 5 degrees from the perpendicular.

In the embodiment of the present invention,
The second contact portion is
A part of the surface of the welding target is slidable on the surface of the convex portion extending in the direction of welding the welding target by projecting, and includes a bearing portion having an axis in a direction orthogonal or substantially orthogonal to the direction in which the welding target is welded. ,
At the time of welding, at least a part of the first contact portion contacts the object to be welded, and the torch moves along the direction in which the bearing slides on the surface of the projection to weld the object to be welded.

  According to this, the torch can be smoothly moved at the time of welding by the bearing portion even in the case of the welding target having a part of the surface protruding. In this specification, the “welding target” may be the welding target itself, or may be a welding target to which a member for assisting welding is attached (a welding target + a member for assisting welding).

In the embodiment of the present invention,
The second contact portion is
A shaft portion that serves as a shaft of the bearing portion,
A plate-shaped member that fixes the shaft portion so that the shaft portion protrudes,
The plate-shaped member has a projecting piece projecting from the diameter of the bearing portion toward the welding target,
At the time of welding, the torch moves so that the projecting piece is guided by the side surface of the projection.

  According to this, when welding the welding target having a part of the surface projecting, the protruding piece of the second contact portion is guided on the side surface of the projecting convex portion of the welding target, and the torch can be easily moved.

In the embodiment of the present invention,
The first contact portion is
On the way extending from the extension part in the protruding direction, it is formed into a single-stroke shape extending in the protruding direction after being curved so that the distance to the protruding portion is small or large, and a single-stroke tip portion is welded during welding. Contacting the welding object.

  According to this, the first contact portion comes into contact with the welding target at one point of the tip portion. Therefore, the contact point between the first contact portion and the welding target is one, and the first contact portion easily slides on the surface of the welding target when moving the torch.

In the embodiment of the present invention,
The first contact portion is
A bifurcated part that branches into two branches on the way from the extension part toward the protruding direction, a curved part that extends from the bifurcated part in the protruding direction and then curves in a direction that intersects the protruding direction, and intersects from the curved part. And a third extension portion extending in the direction, and is formed in a substantially Y-shape, and the third extension portion having a substantially Y-shape comes into contact with a welding target during welding.

  According to this, the third extension portion that is divided by the forked portion comes into contact with the welding target. As a result, the torch is hardly blurred when the torch is operated, because the torch is in contact with the welding object at two separate places.

In the embodiment of the present invention,
The first contact portion is
On the way from the extension part to the protruding direction, it is formed in a spiral shape or a U-shape on the same plane with the protruding direction as the traveling direction, and at least a part of the U-shape comes into contact with a welding target at the time of welding.

  According to this, the first contact portion and the welding target easily come into contact with each other at a plurality of U-shaped portions. Therefore, when operating the torch, the torch is less likely to be blurred.

FIG. 2 is a schematic perspective view showing Example 1 of the auxiliary device of the present invention. FIG. 2 is a schematic front view of the auxiliary device of FIG. 1. FIG. 2 is a schematic perspective view of a welding torch to which the auxiliary device of FIG. 1 is attached. FIG. 4 is a partially enlarged view of FIG. 3. FIG. 5 is a schematic perspective view showing a use state of the torch of FIG. 4. FIG. 2 is a schematic perspective view showing Example 1 of the auxiliary device of the present invention. FIG. 7 is a schematic partial perspective view showing a use state of a welding torch to which the auxiliary device of FIG. 6 is attached. FIG. 4 is a schematic perspective view showing Example 2 of the auxiliary device of the present invention. FIG. 9 is a schematic partial perspective view showing a use state of the torch for welding to which the auxiliary device of FIG. 8 is attached. FIG. 4 is a schematic perspective view showing Example 3 of the auxiliary device of the present invention. FIG. 11 is a schematic partial side view showing a use state of the torch for welding to which the auxiliary device of FIG. 10 is attached. FIG. 6 is a schematic perspective view showing Example 4 of the auxiliary device of the present invention. FIG. 13 is a schematic partial side view showing a use state of the torch for welding to which the auxiliary device of FIG. 12 is attached. FIG. 7 is a schematic perspective view showing Example 5 of the auxiliary device of the present invention. FIG. 15 is a schematic partial side view showing a use state of the torch for welding to which the auxiliary device of FIG. 14 is attached. FIG. 9 is a schematic partial side view showing a use state of the welding torch to which the auxiliary device of Example 6 of the present invention is attached.

  1 and 2 show an auxiliary device 1 according to an embodiment of the present invention. The auxiliary device 1 is attached to, for example, a torch T (FIGS. 3 and 4) for welding a thin plate (welding target) such as an iron plate. As shown in FIG. 4, the torch T has, for example, a cylindrical nozzle portion N and a projection portion P that projects from the center of the nozzle portion N and serves as a welding wire for generating an arc between the nozzle portion N and an object to be welded. . The auxiliary device 1 assists the operation of the torch T when welding using the torch T. The auxiliary device 1 includes a fixing portion 2 for fixing the auxiliary device 1 to the torch T, an extending portion 3 extending from the fixing portion 2, and a contact portion 4 extending from the extending portion 3 and contacting a welding target at the time of welding. And.

  Returning to FIGS. 1 and 2, the fixing portion 2 includes a substantially C-shaped plate-shaped main body 5, a pair of projecting plates 6 protruding laterally from both ends of the plate-shaped main body 5, A fixing member 7 for fixing the protruding plate 6 and a protruding plate 8 protruding laterally from a part of the outer periphery of the main body 5 are provided.

  The main body portion 5 is formed in a substantially C-shaped plate shape in which a part of the side surface of the hollow cylinder is cut out along the height direction of the hollow cylinder. The main body part 5 is attached to the outer surface of the cylindrical nozzle part N of the torch T as shown in FIG.

  Each of the pair of projecting plates 6 projecting from the main body 5 is formed in a rectangular plate shape. Each of the pair of projecting plates 6 has a through hole H1 (FIG. 2) penetrating the projecting plate 6 in the thickness direction. A screw may be cut on the inner surface of each through hole H1 (FIG. 2).

  The fixing member 7 for fixing the pair of protruding plates 6 is configured, for example, as a bolt 7a and a nut 7b. A bolt 7a is inserted so as to pass through a pair of through holes H1 (FIG. 2), and a nut 7b is attached from the lower end side of the bolt 7a. By fixing the pair of protruding plates 6 from both sides in the thickness direction of the pair of protruding plates 6 with bolts 7a and nuts 7b, the main body 5 is attached to the nozzle N of the torch T as shown in FIG. Can be

  Returning to FIG. 1, the protruding plate 8 protruding laterally from a part of the outer periphery of the main body 5 is formed in a rectangular plate shape. The projecting plate 8 has a through hole H2 (FIG. 2) penetrating the projecting plate 8 in the thickness direction. A screw is cut on the inner surface of the through hole H2 (FIG. 2).

  The extension 3 is attached to the through hole H2. As shown in FIG. 1, the extending portion 3 has, for example, a linear rod-shaped member 9 extending along the axis O direction. The rod-shaped member 9 is formed so as to be inserted into the through hole H2 (FIG. 2). The rod-shaped member 9 has a screw portion S1 on one end side. The rod-shaped member 9 can be screwed into the through hole H2 (FIG. 2) by the screw portion S1. The rod-shaped member 9 shown in FIG. 1 can be attached to the through hole H2 (FIG. 2) at an arbitrary position in the direction of the axis O by the screw portion S1. The extension part 3 may have a nut which is a fixing member for fixing the position of the rod-shaped member 9 attached to the through hole H2 (FIG. 2).

  The contact part 4 is connected to the tip of the rod-shaped member 9. The contact portion 4 is configured as, for example, a bar-shaped member 10 which extends from the bar-shaped member 9 (extending portion 3). The rod-shaped member 10 has one end connected to the distal end of the rod-shaped member 9, and extends from one end (start end) to the other end (end) of the rod-shaped member 10, as shown in FIG. Are formed so as to become smaller, and then are drawn in a one-stroke shape extending in the protruding direction of the protruding portion P. The other end of the rod-shaped member 10 is formed in a hemispherical shape, and is slightly withdrawn or protruded from the tip of the protruding portion P in the protruding direction in which the protruding portion P protrudes. In addition, the shape of the rod-shaped member 10 may be formed in a single-stroke shape that extends in the direction in which the protrusion P projects after being curved so as to increase the distance from the protrusion P.

  The auxiliary device 1 having the above configuration is attached to the torch T. The auxiliary device 1 assists the operation of the torch T when welding using the torch T. The auxiliary device 1 is attached to the torch T by mounting the main body 5 on the outer surface of the nozzle N and fixing the main body 5 to the nozzle N with bolts 7a and nuts 7b. The auxiliary device 1 may adjust the position of the rod-shaped members 9 and 10 by rotating the rod-shaped members 9 (and the rod-shaped members 10) around the axis O while being attached to the torch T.

  Next, a series of flows for assisting the welding operation by the auxiliary tool 1 when welding is performed by the torch T to which the auxiliary tool 1 is attached will be described. Here, a case where two iron plates S are welded as a welding target as shown in FIG. 5 will be described as an example. First, two iron plates S to be welded to the torch T to which the auxiliary device 1 is attached are prepared, and are arranged so that portions to be welded of the two iron plates S to be welded abut each other. Next, after the projecting portion P of the torch T and the iron plate S are brought into contact with each other and energized, the two are separated to generate an arc. The welding is performed while melting the protruding portion P together with the iron plate S by the arc. The torch T is operated so that the tip of the protrusion P moves along a line L (a portion to be welded) formed by abutting the two iron plates S. When the torch T is operated, the tip of the rod-shaped member 10 comes into contact with the surface of the iron plate S, and the tip slides on the surface of the iron plate S to weld the iron plate S (the direction in which the line L extends). And moves together with the protrusion P. The welding ends when the protruding portion P moves from one end to the other end of the portion (line L) to be welded.

  As described above, the assisting device 1 suppresses the shaking of the operator who operates the torch T by bringing the tip of the rod-shaped member 10 into contact with the surface of the iron plate S at the time of welding. ) And the iron plate S can be stabilized. As a result, the finish (quality) of welding can be improved. The rod-shaped member 10 comes into contact with the iron plate S at one location at the tip end. Therefore, the contact point between the bar-shaped member 10 and the iron plate S is one, and the bar-shaped member 10 easily slides on the surface of the iron plate S when the torch T is moved. Further, since the tip of the rod-shaped member 10 that contacts the surface of the iron plate S is hemispherical, the tip smoothly slides on the surface of the iron plate S. Therefore, even if the rod-shaped member 10 is in contact with the iron plate S, the torch T can be relatively easily moved.

  In the above, the auxiliary device 1 having the rod-shaped member 10 as the contact portion 4 has been described, but may be the auxiliary device 101 shown in FIG. In the following, the same components as those described above are denoted by the same reference numerals, and description thereof will be omitted. The auxiliary device 101 has a rod-shaped member 102 as the contact portion 4. The rod-shaped member 102 has one end connected to the distal end of the rod-shaped member 9, and a bifurcated portion 103 that splits into two branches while extending from one end (start end) to the other end (end) of the rod-shaped member 102, as shown in FIG. 7. As described above, the protruding portion P extends from the forked portion 103 in the protruding direction in which the protruding portion P protrudes, and then bends in the direction intersecting the protruding direction. And an extension portion 105 extending in the direction of movement. The bar-shaped member 102 is formed in a round bar shape. The extension portion 105 is located on the protruding direction side where the protruding portion P protrudes from the tip of the protruding portion P.

  When welding is performed with the torch T to which the auxiliary tool 101 having the rod-shaped member 102 is attached, for example, as shown in FIG. 7 (a part of the torch T is omitted), the two iron plates S are at right angles, and (Line L) is arranged vertically. Then, the extending portion 105 of the substantially Y-shaped bar-shaped member 102 is brought into contact with the surface of each iron plate S, and welding is performed along the longitudinal direction.

  When the bar-shaped member 102 is used, the extending portion 105 divided by the forked portion 103 comes into contact with the iron plate S. Therefore, the torch T is hardly blurred when the torch T is operated, because the iron plate S comes into contact with the iron plate S at the two places where the fork is split. Further, since the extending portion 105 that comes into contact with the surface of the iron plate S has a round bar shape, the extending portion 105 smoothly slides on the surface of the iron plate S. Therefore, even if the rod-shaped member 102 is in contact with the iron plate S, the torch T can be relatively easily moved.

  Instead of the auxiliary device 101 having the rod member 102, an auxiliary device 201 having a rod member 202 shown in FIGS. 8 and 9 (a part of the torch T is omitted) may be used. The rod-shaped member 202 has one end connected to the distal end of the rod-shaped member 9, and extends from one end (start end) to the other end (end) of the rod-shaped member 202, as shown in FIG. (Upper to lower in the drawing) as an axis, while rotating around the axis, a spiral U-shaped shape that advances in the protruding direction (from the upper to lower in the drawing), or U that is located (drawn) on the same plane It is formed in a character shape. The rod-shaped member 202 is formed in a round bar shape, and is retracted from the tip of the protruding portion P (away from the iron plate S) or protrudes from the tip of the protruding portion P (located on the iron plate S side).

  When welding is performed by the torch T to which the auxiliary tool 201 attached to the rod-shaped member 202 is attached, for example, as shown in FIG. 9, two iron plates S are arranged so as to abut on the same plane. Then, the substantially U-shaped rod-shaped member 202 is brought into contact with the surface of the iron plate S to perform welding.

  When the bar-shaped member 202 is used, the bar-shaped member 202 comes into contact with the iron plate S at a plurality of substantially U-shaped portions. Therefore, when operating the torch T, the torch T is hardly blurred. Further, since the rod-shaped member 202 that comes into contact with the surface of the iron plate S has a round rod shape, the rod-shaped member 202 smoothly slides on the surface of the iron plate S. Therefore, even if the rod-shaped member 202 is in contact with the iron plate S, the torch T can be relatively easily moved.

  The auxiliary devices 1, 101, 201 described above are only one embodiment, and various modifications are possible. In the above, an example was shown in which a non-movable member such as the rod-shaped members 10, 102, 202 slides on the surface of the iron plate S. A movable member (bearing part 302) may slide on the surface of the iron plate S like an auxiliary device 301 shown in FIGS. 10 and 11 (a part of the torch T is omitted). In FIG. 10, two protruding plates 8 are positioned so as to face the main body 5. A movable mechanism is attached to each protruding plate 8. The movable mechanism includes a plate-like member 303 extending from the protruding plate 8 along the nozzle portion N in the protruding direction of the protruding portion P, as shown in FIG. And an extending portion 304 extending.

  The plate-shaped member 303 is formed in a substantially L-shaped plate shape, and has a plate-shaped one piece portion 303 a overlapping the protruding plate 8 and a plate-shaped piece connected to the one piece portion 303 a and extending along the thickness direction of the protruding plate 8. It has another piece 303b. A through hole H3 (FIG. 11) is formed in one piece 303a. A screw is cut on the inner surface of the through hole H3 (FIG. 11). The plate-like member 303 is positioned such that the through hole H3 (FIG. 11) and the through hole H2 (FIG. 11) of the protruding plate 8 are coaxial, and the bolts B serving as fixing members are provided in the through holes H2 and H3 (FIG. 11). As a result, the plate member 303 is attached to the protruding plate 8.

  The extension part 304 is connected to one end of the other piece part 303b and extends in the direction in which the projection part P projects. The extension portion 304 includes a plate-shaped main body portion 305, a shaft member 306 extending from the main body portion 305 toward the protruding portion P, a bearing portion 302 into which the shaft member 306 is inserted, and a shaft member 306 and the bearing portion 302. And a mounting member 307 to be attached to the portion 305. When the bearing portion 302 is attached to the main body portion 305, at least a part of the bearing portion 302 is positioned so as to protrude from the distal end portion T1 of the main body portion 305.

  The main body portion 305 is a plate-like member that is curved in a convex shape from one end (start end) to the other end (end end), and has a through hole H4 (FIG. 11) formed at the tip end portion T1. The shaft member 306 is inserted into the through hole H4 (FIG. 11). The bearing portion 302 is attached to the shaft member 306, and the shaft member 306 and the bearing portion 302 are attached to the main body portion 305 by the attachment member 307.

  When welding is performed with the torch T to which the auxiliary device 301 having the plate-shaped member 303 and the extension portion 304 is attached, for example, as shown in FIG. It is arranged so that it becomes. Then, the one bearing part 302 and the other bearing part 302 are brought into contact with the surface of each iron plate S, and the bearing part 302 is positioned so that the shaft member 306 is positioned in a direction orthogonal to the welding direction (direction along the line L). Place. In this state, the torch T is moved along the line L to perform welding.

  Since the shaft member 306 is positioned orthogonal to the welding direction (direction along the line L), the torch T can be smoothly moved by the bearing portion 302 during welding. Further, since the bearing portion 302 contacts each iron plate S, it is possible to further suppress the shaking of the operator's hand operating the torch T.

  Further, instead of the one extension 304, the extension 402 of the auxiliary device 401 shown in FIG. 12 may be used. The extending portion 402 includes a plate-shaped main body portion 403, a bolt 404 that is a shaft member extending in a protruding direction in which the protruding portion P protrudes from the main body portion 403 as shown in FIG. And a fixing member 405 for fixing the fixing member.

  The main body 403 is a rectangular plate-like member, and has a through hole H5 formed therein. The bolt 404 is inserted into the through hole H5. The fixing member 405 is attached to the bolt 404, and the bolt 404 is attached to the main body 403.

  When welding is performed with the torch T to which the auxiliary device 401 is attached, for example, as shown in FIG. 13, two iron plates S are arranged at right angles, and a portion to be welded (line L) is arranged horizontally. You. Then, the planar head portion of the bolt 404 and the bearing portion 302 are brought into contact with the surface of the iron plate S, and the bearing portion 302 is arranged so that the shaft member 306 is positioned in a direction orthogonal or substantially orthogonal to the welding direction. In this state, welding is performed by moving the torch T in the lateral direction (the direction along the line L).

  Since the shaft member 306 is positioned orthogonal to the welding direction (direction along the line L), the torch T can be smoothly moved by the bearing portion 302 during welding. Furthermore, since the movement of the torch T is restricted by the flat head of the bolt 404, the straight operation of the torch T is assisted, and the welding quality can be improved.

  In the above, the example which assisted the torch T operation at the time of welding by contacting at least one part of the auxiliary tools 1, 101, 201, 301, and 401 on the surface of the flat iron plate S was demonstrated. The iron plate S is not limited to a flat iron plate, but may be a flat iron plate S to which a rectangular plate member C (FIG. 15) for guiding the operation of the torch T is attached at the time of welding. In this case, a part of the surface of the iron plate S to be welded protrudes, so to speak, for example, a convex portion (rectangular plate member C) extending along the welding direction is formed on the surface of the iron plate S. The operation of the torch T may be assisted by sliding the surface of the projection (the rectangular plate-shaped member C) with the bearing 505 of the assisting device 501 shown in FIG.

  In FIG. 14, a movable mechanism is attached to the protruding plate 8. The movable mechanism includes a plate-like member 303 extending from the protruding plate 8 along the nozzle portion N in the protruding direction of the protruding portion P, as shown in FIG. And an extending portion 502 that extends.

  The extension 502 is connected to one end of the other piece 309b and extends in the direction in which the projection P projects. The extension portion 502 includes a plate-shaped main body portion 503, a shaft member 504 extending from the main body portion 503 toward the protrusion P, a bearing portion 505 attached to the shaft member 504, and the shaft member 504 and the bearing portion 505. And a mounting member 506 attached to the portion 503. With the bearing portion 505 attached to the main body portion 503, the main body portion 503 protrudes outside the diameter of the bearing portion 505 (the main body portion 503 is located closer to the iron plate S than the bearing portion 505).

  When welding is performed with the torch T to which the auxiliary device 501 having the plate-shaped member 309 and the extension 502 is attached, for example, as shown in FIG. Then, the bearing member 505 is brought into contact with the surface of the convex portion (rectangular plate-shaped member C) of one iron plate S, and the shaft member 504 is positioned in a direction orthogonal to the welding direction (direction along the line L). The bearing part 505 is arranged. In this state, the torch T is moved in the lateral direction, and welding is performed in the lateral direction.

  Since the main body portion 503 protrudes toward the iron plate S from the diameter of the bearing portion 505, a part of the distal end of the main body portion 503 becomes a protruding piece P1, and the protruding piece P1 Is guided, the torch T can be smoothly moved by the bearing portion 505, and the vibration of the hand of the operator operating the torch T can be further suppressed.

  As described above, the embodiments of the present invention have been described. However, the present invention is not limited to the specific description, and it is also possible to appropriately combine the exemplified configurations and the like within a technically consistent range. In addition, some elements and processing may be replaced with a known form and executed.

  For example, as shown in FIG. 16, an auxiliary device 601 combining the rod-shaped member 202 of FIG. 8 and the bearing portion 302 of FIG. 10 may be used, and other embodiments may be used in combination as appropriate.

  In the above description, a welding wire for supplying a current to a welding target is illustrated as an example of the protruding portion P. However, for supplying a current to the welding target protruding from the center of the nozzle portion N (for performing TIG welding). A tungsten electrode may be used as the protrusion P. Also, when welding is performed using a welding rod, the auxiliary tools 1, 101, 201, 301, 401, 501, and 601 can be used. Similarly, the auxiliary tool of the present invention can be used for a torch T used for various welding methods such as arc welding and TIG welding.

  Here, a part of the correspondence between the present embodiment and the wording described in the claims for utility model registration will be described. The auxiliary devices 1, 101, 201, 301, 401, 501, and 601 of the present embodiment correspond to the auxiliary devices. Similarly, the nozzle portion N is a nozzle portion, the protruding portion P is a protruding portion, the torch T is a torch, the iron plate S is a welding target, the fixing portion 2 is a fixing portion, the extension portion 3 is an extension portion, the contact portion 4 is a contact portion, The axis O corresponds to the axis, the bar-shaped member 9 corresponds to a bar-shaped member, the through-hole H2 corresponds to a holding portion, and the screw of the through-hole H2 corresponds to an adjusting mechanism.

DESCRIPTION OF SYMBOLS 1 Auxiliary instrument 2 Fixed part 3 Extension part 4 Contact part 5 Main part 6 Projection plate 7 Fixing member 8 Projection plate 9 Bar-shaped member 10 Bar-shaped member 11 Projection T Torch N Nozzle part P Projection H1-H5 Through-hole

Claims (9)

A nozzle, and an auxiliary tool attached to a torch having a protrusion protruding from the nozzle, for assisting operation of the torch when welding a welding target with the torch,
A fixing portion fixed to the nozzle portion,
An extending portion extending from the fixing portion along the nozzle portion in the direction in which the projecting portion projects,
A contact portion that extends from the extension portion in the protruding direction and at least partially contacts the welding target during welding;
With
An auxiliary device that suppresses shaking of a hand of the operator of the torch when the contact portion comes into contact with the welding target during the welding. The extension has a rod-shaped member extending along the axial direction,
The auxiliary device according to claim 1, wherein the fixing unit has a holding unit that can hold the rod-shaped member at an arbitrary position in the axial direction and an adjustment mechanism that can adjust a position where the rod-shaped member is held. . The extension is a first extension,
The contact portion is a first contact portion,
A second extending portion extending from the fixing portion in the protruding direction along the nozzle portion;
A second contact portion extending from the second extension portion in the protruding direction and at least partially contacting the welding target during the welding;
The auxiliary device according to claim 1, comprising: The second contact portion,
The surface of the welding target is slidable, comprising a bearing portion having an axis in a direction orthogonal or substantially orthogonal to the direction in which the welding target is welded,
At the time of the welding, at least a part of the first contact portion comes into contact with the welding target, and the torch moves along a direction in which the bearing slides on the surface of the welding target to weld the welding target. The auxiliary device according to claim 3, which performs the operation. The second contact portion,
A bearing in which a part of the surface of the welding target projects and is slidable on a surface of a convex portion extending in a direction in which the welding target is welded, and has an axis in a direction perpendicular or substantially perpendicular to a direction in which the welding target is welded. Part,
At the time of the welding, at least a part of the first contact portion comes into contact with the welding target, and the torch moves along a direction in which the bearing slides on the surface of the projection to weld the welding target. The auxiliary device according to claim 3, which performs the operation. The second contact portion,
A shaft portion serving as a shaft of the bearing portion;
A plate-shaped member that fixes the shaft portion so that the shaft portion protrudes,
The plate-shaped member has a projecting piece projecting from a diameter of the bearing portion toward the welding target,
The assisting device according to claim 5, wherein the torch moves such that the projecting piece is guided by a side surface of the protrusion during the welding. The first contact portion is
In the middle of extending from the extending portion in the protruding direction, it is formed into a one-stroke shape extending in the protruding direction after being curved so that the distance to the protruding portion becomes smaller or larger, and the one-stroke shape is formed at the time of the welding. The auxiliary tool according to any one of claims 3 to 6, wherein a writing-like tip portion contacts the welding target. The first contact portion is
A bifurcated portion that branches into two branches on the way extending from the extending portion in the protruding direction, and a curved portion that curves in a direction intersecting the protruding direction after extending in the protruding direction from the bifurcated portion, And a third extension portion extending from the curved portion in the direction of the crossing. The third extension portion is formed in a substantially Y-shape, and the third extension portion having a substantially Y-shape is formed at the time of the welding. The auxiliary device according to any one of claims 3 to 6, which is in contact with the auxiliary device. The first contact portion is
In the middle of extending from the extending portion toward the protruding direction, a spiral or a U-shape is formed on the same plane with the protruding direction as a traveling direction, and at least a part of the U-shape is formed at the time of the welding. The auxiliary device according to any one of claims 3 to 6, which comes into contact with an object to be welded.

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