JP2013248650A - Welding wire guiding member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a welding wire guiding member capable of reducing production cost with a simple constitution, and further capable of securely suppressing the feed resistance of a welding wire even if a tube-shaped member is bent.SOLUTION: A welding wire guiding member 1 capable of guiding a welding wire W from a wire storage vessel A to welding equipment B is provided. The welding wire guiding member 1 includes: a tube-shaped member 2 extensively installed between the wire storage vessel A and the welding equipment B and bendable in an optional direction; a case member 3 stored in the tube-shaped member 2, and in which an insertion hole 3a capable of inserting the welding wire W is formed; and a guiding member 4 composed of a spherical member arranged in the case member 3 freely rotatably while facing on the insertion hole 3a in a part, and capable of guiding the welding wire W inserted into the insertion hole 3a in a contact state.

Description

  The present invention relates to a welding wire guide member capable of guiding a welding wire from a wire storage means to a welding apparatus.

  For example, a welding apparatus capable of automatically or semi-automatically performing a welding operation such as arc welding is normally capable of being welded by continuously supplying a welding wire from a wire storage means and melting the welding wire together with a base material. Has been. Such a welding wire is fed out from the wire storage means according to welding and is guided by a welding wire guide member and fed to a welding apparatus.

  For example, as disclosed in Patent Document 1, a conventional welding wire guide member includes a case member in which an insertion hole for inserting a welding wire is formed, and a plurality of roller members having a roller portion facing the insertion hole. And a tubular member that accommodates the case member, and the roller member can be guided in contact with the welding wire. The roller member is rotatable in a predetermined direction (forward direction or reverse direction) about an axis, and is configured to reduce feeding resistance when the welding wire is fed.

International Publication No. 2011/009468

  However, since the conventional welding wire guide member is configured to guide the welding wire with a roller member that can rotate in the forward rotation direction or the reverse rotation direction about the axis, the configuration becomes complicated and manufactured. There was a problem that the cost increased. In addition, if the welding wire inserted through the insertion hole is also bent in the same direction due to the bending of the tubular member, the rotation direction of the roller member and the feeding direction of the welding wire may differ. There is a concern that the feeding resistance of the welding wire may increase.

  The present invention has been made in view of such circumstances, and it is possible to reduce the manufacturing cost by adopting a simple configuration and to reliably suppress the feeding resistance of the welding wire even if the tubular member is bent. It is an object of the present invention to provide a welding wire guide member that can be used.

  The invention according to claim 1 is a welding wire guide member capable of guiding the welding wire from the wire storage means to the welding apparatus, and is extended between the wire storage means and the welding apparatus and bends in an arbitrary direction. A tube-shaped member that can be accommodated, a case member that is accommodated in the tube-shaped member and has a through-hole through which a welding wire can be inserted, and the case member rotates while facing part of the insertion hole It is composed of a spherical member that is freely arranged, and is provided with a guide member that can be brought into contact with and guided by the welding wire inserted through the insertion hole.

  According to a second aspect of the present invention, in the welding wire guide member according to the first aspect, the guide member is made of a metal material.

  The invention according to claim 3 is the welding wire guide member according to claim 1, wherein the guide member is made of a resin material.

  According to a fourth aspect of the present invention, in the welding wire guide member according to any one of the first to third aspects, the case member has a recess formed from a predetermined portion of the insertion hole toward the outer diameter direction. And the guide member is rotatably accommodated in the recess.

  According to a fifth aspect of the present invention, in the welding wire guide member according to any one of the first to fourth aspects, a plurality of the guide members are disposed in a circumferential direction of the case member, and a welding wire is interposed. In such a state, the guide members interfere with each other and are held at predetermined positions.

  According to the first aspect of the present invention, it is composed of a spherical member that is rotatably disposed on the case member with a part thereof facing the insertion hole, and can be guided in contact with the welding wire inserted through the insertion hole. Since the guide member is provided, the manufacturing cost can be reduced by adopting a simple configuration, and the feeding resistance of the welding wire can be reliably suppressed even when the tubular member is bent.

  According to the invention of claim 2, since the guide member is made of a metal material, it is possible to prevent the guide member from being deformed even when the welding wire becomes high temperature due to welding by the welding apparatus, and more reliable welding. Wire feeding can be enabled.

  According to the invention of claim 3, since the guide member is made of a resin material, it is easy to obtain a spherical member having a desired size, the degree of design freedom can be improved, and the manufacturing cost can be reduced. It can be further reduced.

  According to the invention of claim 4, the case member has a recess formed in a radially outward direction from a predetermined portion of the insertion hole, and the guide member is rotatably accommodated in the recess, so that the case member is simpler. The guide member can be rotatably arranged with a simple structure.

  According to the invention of claim 5, a plurality of guide members are arranged in the circumferential direction of the case member, and the guide members interfere with each other and are held at a predetermined position without a welding wire interposed therebetween. At least the retaining means or the retaining shape on the radially inner side of the guide member can be eliminated, and the configuration can be further simplified.

The schematic diagram which shows the welding apparatus to which the welding wire guide member which concerns on embodiment of this invention, the said welding wire guide member is applied, and a wire storage means Side view showing the welding wire guide member Longitudinal sectional view showing the welding wire guide member The perspective view which shows the case member in the welding wire guide member Side view and front view showing a case member in the welding wire guide member Longitudinal sectional view showing a case member in the welding wire guide member The side view which shows the welding wire guide member which concerns on other embodiment of this invention. Longitudinal sectional view showing the welding wire guide member

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
As shown in FIG. 1, the welding wire guide member according to the present embodiment can guide a welding wire W for welding from a wire storage container A as a wire storage means to a welding apparatus B. The welding apparatus B applied in the present embodiment is composed of a welding robot capable of automatically or semi-automatically performing a welding operation such as arc welding, and includes a welding torch T at the tip of the robot arm. Yes. The robot arm is operated by numerical control or the like, so that the desired base material, which is a workpiece, and the welding wire W are melted and desired welding can be performed.

  On the other hand, a feeding motor M is disposed at a predetermined portion of the welding apparatus B. When the feeding motor M is driven, the welding wire W is pulled, and a predetermined amount of welding is performed from the wire storage container A. The wire W is fed. The wire storage container A as a wire storage means applied in the present embodiment accommodates the welding wire W, and sequentially feeds out the welding wire W of a required length according to the progress of welding by the welding apparatus B, so that the welding is performed. It can be supplied to the device B.

  The welding wire guide member 1 has connecting members C1 and C2 (see FIGS. 2 and 3) attached to both ends thereof, and the connecting member C1 is a wire storage container A (specifically, a feeding portion of the welding wire W). And the connecting member C2 is configured to be fixed to the welding apparatus B (specifically, the portion where the feed motor M is disposed). Here, as shown in FIGS. 2 to 6, the welding wire guide member 1 according to the present embodiment mainly includes a tubular member 2, a case member 3, and a guide member 4.

  The tubular member 2 is formed of a flexible member that extends between the wire storage container A and the welding apparatus B and can bend in any direction. For example, a synthetic resin made of vinyl is formed into a tubular shape. Made of cylindrical tube. The tubular member 2 may be made of various materials as long as the case member 3 is accommodated therein and can be bent or handled in an arbitrary direction.

  The case member 3 is accommodated in the tubular member 2, and an insertion hole 3 a through which the welding wire W can be inserted along the longitudinal direction is formed at the center. More specifically, as shown in FIGS. 4 to 6, the case member 3 is formed of a resin-made cylindrical member, and an insertion hole 3 a is formed through the center thereof, and a predetermined portion of the insertion hole 3 a. And a recess 3b formed in the outer diameter direction, and a guide member 4 is rotatably accommodated in the recess 3b.

  A plurality (four in this embodiment) of the recesses 3b are formed at equal intervals in the circumferential direction of the case member 3, and the guide member 4 is rotatably accommodated in each recess 3b. The concave portion 3b has a small diameter portion 3ba on the outer diameter side and a large diameter portion 3bb on the inner diameter side, and the small diameter portion 3ba is configured so that the guide member 4 accommodated in the concave portion 3b does not come out to the outside. Yes. In the present embodiment, four recesses 3b for rotatably accommodating the guide member 4 are formed in the circumferential direction. However, it is sufficient if at least two recesses 3b are formed in the circumferential direction. For example, the phase is changed. A concave portion may be formed at the position (position shifted in the longitudinal direction), and the guide member 4 may be accommodated at that position.

  The guide member 4 is composed of a spherical member (ball-shaped member) rotatably disposed in the recess 3b of the case member 3 with a part thereof facing the insertion hole 3a of the case member 3, and is inserted into the insertion hole 3a. Can be guided in contact with the welding wire W formed. The guide member 4 according to the present embodiment is made of a metal material such as iron or stainless steel and prevents the guide member 4 from being deformed even when the welding wire W becomes high temperature due to welding by the welding apparatus B. It is possible to feed the welding wire W more reliably.

  The guide member 4 is not limited to a metal material, and may be a resin material, for example. In this way, if the guide member 4 is made of a resin material (resin molded part), it is easy to obtain a spherical shape with a desired size (desired diameter), and the degree of freedom in design is improved. In addition, the manufacturing cost can be further reduced. If the guide member 4 is made of a resin material, the surface thereof can be easily subjected to desired processing such as dimple processing.

  Further, a plurality (four) of the guide members 4 according to the present embodiment are disposed in the circumferential direction of the case member 3 and, as shown in FIG. It is configured to interfere with each other and be held at a predetermined position (that is, the recess 3b in which each is accommodated). As a result, it is possible to eliminate at least the retaining means or the retaining shape on the radially inner side of the guide member 4, and the configuration can be further simplified. However, a gap is formed at the center of a plurality (four in this embodiment) of the guide members 4 arranged in the circumferential direction, and the welding wire W is inserted and guided through the gap. Become.

  A plurality of case members 3 each having the guide member 4 as described above are accommodated inside the tubular member 2 as shown in FIGS. Here, in the present embodiment, the plurality of case members 3 are arranged in series in the longitudinal direction without gaps and are accommodated in the tubular member 2, and the fixing members a inserted at both ends of the tubular member 2. , B are fixed so as not to move in the longitudinal direction. The fixing members a and b are fixed at predetermined positions by caulking rings 5 from the outside of the tubular member 2 while connecting members C1 and C2 are attached to the distal ends thereof.

  Then, in a state where the welding wire W is inserted into the insertion holes 3a in the plurality of case members 3 in the tubular member 2, when desired welding is performed by the welding apparatus B, the wire storage container is accommodated according to the progress of the welding. The welding wire W is drawn out from A. At this time, as shown in FIG. 6, the welding wire W fed out from the wire storage container A is guided by being brought into contact with the guide member 4 in each case member 3, and is also in contact with the welding wire W. The member 4 rotates in the feeding direction.

  Therefore, since the guide member 4 is configured to rotate when the welding wire W passes while contacting, both the welding resistance of the welding wire W and the guide member 4 can be significantly reduced. Thus, the welding wire W can be fed stably over a long period of time. Moreover, since the guide member 4 which concerns on this embodiment consists of a spherical member and can rotate (roll) in various directions, it will be in the state in which the tubular member 2 was bent, and the welding wire was in the bent direction. Even when W is fed, the guide member 4 rotates in the same direction, and a reduction in feeding resistance can be maintained.

  According to the said embodiment, it consists of the spherical member arrange | positioned rotatably in the case member 3 facing a part through the insertion hole 3a, and contacts with the welding wire W inserted in the said insertion hole 3a, and guides it. Since the guide member 4 that can be used is provided, the manufacturing cost can be reduced by adopting a simple configuration as compared with, for example, a roller member that can rotate around an axis, and the tubular member 2 can be bent. The feeding resistance of the welding wire W can be reliably suppressed.

  Although the present embodiment has been described above, the present invention is not limited to this, and the case member 3 is intermittently disposed in the longitudinal direction of the tubular member 2 as shown in FIGS. The welding wire guide member 1 ′ may be fixed from the outside by a caulking ring 5 or the like. According to the welding wire guide member 1 ′, the case member 3 can be disposed only at a necessary portion to reduce the number of parts. In addition, as in the above embodiment, for example, a roller that can rotate around an axis. The manufacturing cost can be reduced by adopting a simple configuration as compared with the member or the like, and the feeding resistance of the welding wire W can be reliably suppressed even when the tubular member 2 is bent.

  Further, in the present embodiment, the case member 3 is accommodated in the tubular member 2 and fixed from the outside of the tubular member 2 with the caulking ring 5 or the like, but the adjacent case members 3 are connected. It is good also as what fixes the connecting means to make or fix the case member 3 in the tubular member 2 by adhesion | attachment with an adhesive agent, etc. Furthermore, a guide member 4 made of a metal material or a resin material may be prepared, and either one may be selected and used according to the hardness of the welding wire W or the like. The shape of the case member 3 is not limited to a cylindrical shape as in the present embodiment, and may be other shapes such as a prismatic shape.

  A tube-shaped member that extends between the wire storage means and the welding apparatus and can be bent in any direction, and an insertion hole that is accommodated in the tube-shaped member and can be inserted through the welding wire are formed. And a guide member that can be guided in contact with a welding wire that is inserted into the insertion hole, and includes a spherical member that is rotatably disposed on the case member with a portion facing the insertion hole. If it is a welding wire guide member provided with, it can be applied to those having different external shapes or those having other functions added.

DESCRIPTION OF SYMBOLS 1 Welding wire guide member 2 Tubular member 3 Case member 4 Guide member 5 Caulking ring A Wire storage container (wire storage means)
B welding equipment

Claims (5)

In a welding wire guide member capable of guiding a welding wire from a wire storage means to a welding device,
A tube-like member that extends between the wire storage means and the welding device and can bend in any direction;
A case member that is accommodated in the tubular member and has an insertion hole through which a welding wire can be inserted; and
A guide member that is formed of a spherical member that is rotatably disposed on the case member with a portion facing the insertion hole, and that can be guided by contact with a welding wire inserted through the insertion hole;
A welding wire guide member characterized by comprising:   The welding wire guide member according to claim 1, wherein the guide member is made of a metal material.   The welding wire guide member according to claim 1, wherein the guide member is made of a resin material.   The said case member has a recessed part formed toward the outer-diameter direction from the predetermined site | part of the said insertion hole, The said guide member is rotatably accommodated in the said recessed part, It is characterized by the above-mentioned. The welding wire guide member as described in any one of these.   The guide members are arranged in a plurality in the circumferential direction of the case member, and the guide members interfere with each other and are held at a predetermined position without a welding wire interposed therebetween. The welding wire guide member according to any one of 4.

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