JP6918292B2 - Welding wire guide member - Google Patents

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, in a welding device capable of performing welding work such as arc welding automatically or semi-automatically, welding wire is usually continuously supplied from a wire storage means, and welding is possible by melting the welding wire together with a base metal. Has been done. A required amount of such a welding wire is unwound from the wire storage means according to welding, and is guided by a welding wire guide member to be fed to the welding apparatus.

Conventional welding wire guide members include, for example, as disclosed in Patent Document 1, a case member having an insertion hole through which a welding wire is inserted, and a plurality of roller members having a roller portion facing the insertion hole. And a tubular member for accommodating the case member, and the roller member is configured to be able to come into contact with and guide the welding wire. A plurality of case members were housed in the tubular member and attached side by side in the extending direction of the tubular member.

Japanese Unexamined Patent Publication No. 2013-248650

However, although the conventional welding wire guide member can suppress the feeding resistance of the welding wire, in recent years, there has been an increasing demand for further reducing the feeding resistance of the welding wire. Therefore, the applicant considers that by flexibly displaces the adjacent case member in the tubular member, the feeding resistance of the welding wire can be effectively reduced even if the tubular member is bent. I arrived.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a welding wire guide member capable of effectively reducing the feeding resistance of the welding wire even if the tubular member is bent. ..

The invention according to claim 1 is a welding wire guide member capable of guiding a welding wire from a wire storage means to a welding device, which extends between the wire storage means and the welding device and bends at an arbitrary portion. A bendable tubular member, a case member housed in the tubular member and a case member having an insertion hole through which the welding wire can be inserted, and a case member attached to the case member and inserted into the insertion hole. A guide member that can come into contact with the welding wire and guide the tubular member in the extending direction is provided, and a plurality of the case members are arranged and adjacent to each other in the extending direction of the tubular member. The case members are configured to be abutting and separating from each other and rotatable from each other, and the guide member is composed of a pair of roller-shaped members or a pair of spherical members arranged so as to face each other with the insertion hole interposed therebetween. The pair of roller-shaped members or the pair of spherical members are arranged at at least three positions in the case member in the extending direction of the insertion holes, and are located on one end surface side of the case member. The roller-shaped member or spherical member and the roller-shaped member or spherical member located on the other end surface side are attached to the insertion hole in the same phase positional relationship with each other, and are located at both ends of the case member. It is characterized in that the roller-shaped member or spherical member and the roller-shaped member or spherical member located between the roller-shaped member or spherical member are attached with a phase different from each other by 90 degrees with respect to the circumferential direction .

The invention according to claim 2 is the welding wire guide member according to claim 1, wherein the case member has a convex portion formed on one end surface and a concave portion into which the convex portion can be fitted is formed on the other end surface. The convex portion of the other case member is fitted into the concave portion of one of the adjacent case members so that the convex portion can be brought into contact with and separated from the concave portion, and the convex portion is guided and rotates in the concave portion. It is characterized in that it is made rotatable with respect to each other.

The invention according to claim 3 is characterized in that, in the welding wire guide member according to claim 2, the convex portion and the concave portion have curved fitting surfaces and can be matched in a fitted state.

The invention according to claim 4 is the welding wire guide member according to any one of claims 1 to 3 , wherein the pair of roller-shaped members or spherical members are directed in the extending direction of the insertion hole in the case member. The roller-shaped members or spherical members located at both ends of the case member and the roller-shaped members or spherical members located at the center of the case member are arranged at three locations so as to be 90 degrees out of phase with respect to the circumferential direction. It is characterized by being attached.

According to a fifth aspect of the present invention, in the welded wire guide member according to the fourth aspect , the insertion hole is tapered by continuously reducing the diameter from the opening to the pair of roller-shaped members or spherical members located at the ends. It is characterized by forming an inner peripheral surface having a shape, and can guide the welding wire between the pair of roller-shaped members or spherical members when the welding wire is inserted through the opening.

According to the invention of claim 1, a plurality of case members are arranged along the extending direction of the tubular member, and adjacent case members are abutting and separating from each other and are rotatable to each other. Therefore, the adjacent case member can be flexibly displaced in the tubular member, and the feeding resistance of the welding wire can be effectively reduced even if the tubular member is bent.
Further, the guide member is composed of a pair of roller-shaped members or spherical members arranged so as to face each other across the insertion hole, and the pair of roller-shaped members or spherical members extend in the extending direction of the insertion hole in the case member. Since it is arranged at at least three positions, it is possible to more reliably guide the welding wire by the guide member.

According to the invention of claim 2, in the case member, a convex portion is formed on one end surface and a concave portion into which the convex portion can be fitted is formed on the other end surface, and the concave portion of one of the case members in the adjacent case member is formed. Since the convex portion of the other case member is fitted into the case member so that it can be brought into contact with and separated from each other, and the convex portion is guided and rotated in the concave portion to be rotatable with each other, the adjacent case members are brought into contact with each other. More reliable guidance can be provided when contacting and separating, or rotating with each other.

According to the invention of claim 3, since the fitting surfaces of the convex portion and the concave portion are curved and can be matched in the fitted state, the adjacent case members are in contact with each other and separated from each other, or rotate with each other. At that time, it can be slid smoothly in a curved shape, and can be guided more smoothly.

According to the invention of claim 4 , the pair of roller-shaped members or spherical members are arranged at three positions along the extending direction of the insertion holes in the case member, and are roller-shaped members located at both ends of the case member. Since the member or spherical member and the roller-shaped member or spherical member located at the center are attached with a phase difference of 90 degrees with respect to the circumferential direction, the welding wire is supported at both ends and the center of the case member, respectively. It is possible to guide the welding wire with the guide member more reliably.

According to the invention of claim 5 , the insertion hole is formed by continuously reducing the diameter from the opening to a pair of roller-shaped members or spherical members located at the ends to form a tapered inner peripheral surface, and is welded. When the wire is inserted through the opening, it can be guided between the pair of roller-shaped members or spherical members, so that the welding wire can be inserted into the insertion hole of the case member more easily and smoothly.

Schematic diagram showing a welding wire guide member according to an embodiment of the present invention, a welding device to which the welded wire guide member is applied, and a wire storage means. Side view showing the welding wire guide member Vertical cross-sectional view showing the welding wire guide member Perspective view of the case member of the welded wire guide member as viewed from one end side. Perspective view of the case member of the welded wire guide member as viewed from the other end surface side. Four views showing a case member in the welded wire guide member FIG. 6 is a cross-sectional view taken along the line VII-VII. FIG. 6 is a cross-sectional view taken along the line VIII-VIII. Front view showing a guide member (roller-shaped member) in the welded wire guide member. Cross-sectional view taken along line XX in FIG. Schematic diagram showing a state in which the convex portion and the concave portion of the adjacent case member of the welded wire guide member are fitted. The whole schematic view which shows the state which the convex part and the concave part of the adjacent case member in the welding wire guide member are fitted, and the welding wire is inserted into the insertion hole of each case 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 the welding wire W for welding from the wire storage container A as the wire storage means to the welding device B. The welding device B applied in the present embodiment is composed of a welding robot capable of performing welding work such as arc welding automatically or semi-automatically, and is configured by providing a welding torch T at the tip of the robot arm. There is. Then, by operating the robot arm by numerical control or the like, a desired base material as a work and a welding wire W are melted, and desired welding is possible.

On the other hand, a feed motor M is disposed at a predetermined portion of the welding device B, and when the feed motor M is driven, the welding wire W is pulled and a predetermined amount of welding is performed from the wire containment vessel A. The wire W is to be fed. The wire storage container A as the wire storage means applied in the present embodiment accommodates the welding wire W, and the welding wire W of a required length is sequentially fed out according to the progress of welding by the welding device B, and the welding is performed. It is supposed that it can be sent to the device B.

Connecting members C1 and C2 (see FIGS. 2 and 3) are attached to both ends of the welding wire guide member 1, and the connecting member C1 is a wire containment vessel A (specifically, a feeding portion of the welding wire W). The connecting member C2 is fixed to the welding device B (specifically, the arrangement portion of the feed motor M). Here, as shown in FIGS. 2 to 8, the welding wire guide member 1 according to the present embodiment is mainly composed of a tubular member 2, a case member 3, and guide members 4 (4a to 4c). There is.

The tubular member 2 is made of a flexible member that extends between the wire containment vessel A and the welding device B and can be bent and bent at an arbitrary portion. For example, a vinyl synthetic resin is formed into a tubular shape. Consists of a cylindrical tube. The tubular member 2 may be made of various materials as long as it accommodates a plurality of case members 3 and can be bent or handled in an arbitrary direction. Reference numeral 5 in the figure indicates caulking.

The case member 3 is housed in the tubular member 2, and an insertion hole 3a through which the welding wire W can be inserted is formed in the central portion thereof. More specifically, as shown in FIGS. 4 to 8, the case member 3 is made of a resin-made cylindrical member, and the insertion hole 3a is formed through the center of the case member 3 and is inserted into the insertion hole 3a. A guide member 4 for guiding the welded wire W is attached.

The guide member 4 is attached to the case member 3 and can come into contact with the welding wire W inserted through the insertion hole 3d to guide the tubular member 2 in the extending direction. In the present embodiment, the insertion hole 3d It is composed of a pair of roller-shaped members (4a to 4c) arranged so as to face each other. As shown in FIGS. 9 and 10, each roller member 4 is composed of, for example, a resin cylindrical part having an insertion hole h through which a metal shaft member L is inserted at the center, and is centered on the shaft member L. It is said to be rotatable.

Further, as shown in FIG. 10, the roller member 4 has an R-shaped chamfered portion ha formed at the opening edge portion of the insertion hole h, and an end surface having a continuous downward slope from the center to the side. Has hb. The chamfered portion ha can reduce the contact area with respect to the shaft member L, and the end face hb can reduce the contact area of the case member 3 with the mounting portion when the roller member 4 rotates.

Further, as shown in FIGS. 7 and 8, the roller member 4 according to the present embodiment is attached to a predetermined position of the case member 3 with the shaft member L inserted through the insertion hole h, and the welding wire W is formed. A pair of roller members 4a, a pair of roller members 4b, and a pair of roller members 4c are respectively arranged so as to be able to rotate while contacting the side surface and guide in the feeding direction, and to face each other at positions sandwiching the insertion hole 3d. ing. In the present embodiment, the guide member is composed of roller-shaped members 4 (4a to 4c), but may be a spherical member made of, for example, a metal or a resin material.

Furthermore, as shown in FIGS. 7 and 8, the pair of roller-shaped members (4a to 4c) according to the present embodiment extend in the extending direction (left-right direction in the figure) of the insertion hole 3d in the case member 3. The roller-shaped members (4a, 4b) located at both ends of the case member 3 and the roller-shaped members (4c) located at the center of the case member 3 are arranged at three locations, and the phases of the roller-shaped members (4c) are different from each other by 90 degrees with respect to the circumferential direction. It is attached.

That is, the roller member 4a located on the one end surface side and the roller member 4b located on the other end surface side of the case member 3 are attached to the insertion hole 3d in the same phase positional relationship with each other, and the roller located in the center. The member 4c is attached in a phase positional relationship rotated by 90 degrees with respect to the insertion hole 3d as compared with the other roller members (4a, 4b) at both ends. As a result, the welding wire W can be supported and guided at the time of feeding at at least three positions of the roller members (4a and 4b) located at both ends of the case member 3 and the roller members 4c located at the center.

On the other hand, the insertion hole 3d of the case member 3 according to the present embodiment is formed by continuously reducing the diameter from the opening 3c to the pair of roller-shaped members 4a located at the ends to form a tapered inner peripheral surface 3da. It is configured so that when the welding wire W is inserted through the opening 3c, it can be guided between the pair of roller-shaped members 4a. In particular, as shown in FIG. 12, a plurality of case members 3 are attached adjacent to each other in the extending direction of the tubular member 2, so that when the welding wire W is inserted from one end surface of each case member 3. , The welding wire W can be smoothly guided by each tapered inner peripheral surface 3da.

Here, a plurality of case members 3 of the welding wire guide member 1 according to the present embodiment are arranged along the extending direction of the tubular member 2, and adjacent case members 3 can be brought into contact with each other and separated from each other. Moreover, they are rotatable with each other. That is, as shown in FIGS. 2, 3 and 12, the case member 3 is in a state of being housed in the tubular member 2, and each of the adjacent case members 3 can be displaced in the α direction, and the case member 3 has a tubular shape. When the members 2 are bent, they can come into contact with each other or separate from each other, and each of the adjacent case members 3 can rotate in the β direction, and when the tubular member 2 is bent, they can rotate with each other. -ing

Further, in the case member 3 according to the present embodiment, as shown in FIGS. 4 to 8, a convex portion 3a is formed on one end surface, and a concave portion 3b into which the convex portion 3a can be fitted is formed on the other end surface. As shown in 11, the convex portion 3a of the other case member 3 is fitted into the concave portion 3b of one case member 3 in the adjacent case member 3 so that the convex portion 3a can be brought into contact with and separated from the concave portion 3b, and is convex in the concave portion 3b. The portions 3a are guided and rotated so that they can rotate with each other.

Further, the convex portion 3a and the concave portion 3b formed on the case member 3 have a convex portion 3a and an end surface having a curved shape (that is, a convex portion 3a that is curved from the peripheral edge of the end surface toward the center). 3b) is a concave portion that is curved from the peripheral edge to the center and has a concave shape so that it can be matched in a fitted state. As a result, the adjacent case members 3 can be reliably positioned, and when the tubular member 2 is bent, the adjacent case members 3 can be satisfactorily guided at the time of contact and separation, and at the time of rotation. Can be done.

Then, when the desired welding is performed by the welding device B 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 (see FIG. 12), the welding proceeds. Correspondingly, the welding wire W is unwound from the wire storage container A. At this time, as shown in FIG. 6, the welding wire W unwound from the wire storage container A comes into contact with the pair of roller-shaped members (4a to 4c) constituting the guide member 4 in each case member 3, respectively. The pair of roller-shaped members (4a to 4c) that are guided and in contact with the welding wire W rotate in the feeding direction of the welding wire W.

Therefore, since the pair of roller-shaped members (4a to 4c) are configured to rotate when the welding wire W passes through in contact with each other, the feeding resistance of the welding wire W can be significantly reduced and the welding wire W can be remarkably reduced. It is possible to suppress the wear of both the W and the pair of roller-shaped members (4a to 4c), and it is possible to stably feed the welding wire W over a long period of time. Further, in the case member 3 according to the present embodiment, when the tubular member 2 is bent, the adjacent case members 3 abut and separate from each other and rotate with each other, so that the feeding resistance of the welding wire W becomes excessive. In that case, the feeding resistance can be released.

According to the above embodiment, a plurality of case members 3 are arranged along the extending direction of the tubular member 2, and the adjacent case members 3 move in the α direction so that they can be brought into contact with each other and separated from each other. Moreover, since they are rotated in the β direction and made rotatable with each other, the adjacent case member 3 can be flexibly displaced in the tubular member 2, and the welding wire W can be bent even if the tubular member 2 is bent. Feeding resistance can be effectively reduced.

Further, in the case member 3 according to the present embodiment, a convex portion 3a is formed on one end surface and a concave portion 3b into which the convex portion 3a can be fitted is formed on the other end surface, and one case member in the adjacent case member 3 is formed. The convex portion 3a of the other case member 3 is fitted into the concave portion 3b of the third so that the convex portion 3a can be brought into contact with and separated from the concave portion 3b, and the convex portion 3a is guided and rotated in the concave portion 3b to be rotatable with respect to each other. Therefore, when the adjacent case members 3 come into contact with each other and separate from each other, or rotate with each other, they can be guided more reliably.

Further, since the fitting surfaces of the convex portion 3a and the concave portion 3b according to the present embodiment are curved and can be matched in the fitted state, the adjacent case members 3 are in contact with each other and separated from each other, or rotate with each other. When doing so, it can be slid smoothly in a curved shape, and guidance can be made more smoothly.

Furthermore, the guide member 4 is composed of a pair of roller-shaped members (4a to 4c) (or spherical members) arranged so as to face each other with the insertion hole 3d interposed therebetween, and the pair of roller-shaped members (4a to 4c). (Or a spherical member) is arranged at at least three positions along the extending direction of the insertion hole 3d in the case member 3, so that the guide member 4 can more reliably guide the welding wire W. can.

In particular, the pair of roller-shaped members (4a to 4c) (or spherical members) according to the present embodiment are arranged at three locations along the extending direction of the insertion hole 3d in the case member 3, and the case member 3 Since the roller-shaped members (4a, 4b) (or spherical members) located at both ends of the above and the roller-shaped members 4c (or spherical members) located at the center are attached with a phase difference of 90 degrees with respect to the circumferential direction. , The welding wire W can be guided while being supported at the positions of both ends and the center of the case member 3, and the welding wire W can be guided more reliably by the guide member 4.

In addition, the insertion hole 3d according to the present embodiment continuously reduces the diameter from the opening 3c to the pair of roller-shaped members 4a (or spherical members) located at the ends to form a tapered inner peripheral surface 3da. Since the welding wire W can be guided between the pair of roller-shaped members 4a (or spherical members) when the welding wire W is inserted through the opening 3c, the welding wire W can be inserted into the insertion hole 3d of the case member 3. It can be done more easily and smoothly.

Although the present embodiment has been described above, the present invention is not limited to this. For example, a pair of roller-shaped members (4a to 4c) is at least in the extending direction of the insertion hole 3d in the case member 3. It suffices if they are arranged at three positions, and may be arranged at four or more positions along the extending direction of the insertion hole 3d in the case member 3. Even in this case, it is preferable that the adjacent guide members 4 (a pair of roller-shaped members or a pair of spherical members) are attached so as to be 90 degrees out of phase with respect to the circumferential direction. The material of the case member 3 is not limited to the resin material as in the present embodiment, and may be made of another material such as metal.

A plurality of case members are arranged along the extending direction of the tubular member, and the adjacent case members are configured to be in contact with each other and separated from each other and are rotatable with respect to each other, and the guide member has an insertion hole. It is composed of a pair of roller-shaped members or a pair of spherical members arranged so as to face each other, and the pair of roller-shaped members or a pair of spherical members are provided at at least three locations in the case member in the extending direction of the insertion holes. The roller-shaped member or spherical member located on one end surface side of the case member and the roller-shaped member or spherical member located on the other end surface side of the case member are positioned in the same phase with respect to the insertion hole. A welding wire guide member that is attached with a 90-degree phase difference with respect to the circumferential direction between the roller-shaped member or spherical member located at both ends of the case member and the roller-shaped member or spherical member located between them. If this is the case, it can be applied to those having a different appearance shape or those to which other functions are added.

1 Welded wire guide member 2 Tube-shaped member 3 Case member 3a Convex part 3b Recessed part 3c Opening 3d Insertion hole 3da Tapered inner peripheral surface 4 Guide member 4a Pair of roller-shaped members (guide member)
4b A pair of roller-shaped members (guide members)
4c A pair of roller-shaped members (guide members)
5 Caulking A Wire containment vessel (wire containment means)
B Welding device C1, C2 Connecting member T Welding torch M Feeding motor W Welding wire

Claims (5)

In a welding wire guide member capable of guiding a welding wire from a wire storage means to a welding device,
A tubular member that extends between the wire storage means and the welding device and can be bent and bent at an arbitrary portion.
A case member housed in the tubular member and formed with an insertion hole through which the welding wire can be inserted.
A guide member attached to the case member and capable of contacting the welding wire inserted through the insertion hole and guiding the tubular member in the extending direction.
The case members are arranged in a plurality in the extending direction of the tubular member, and the adjacent case members are configured to be abutting and separating from each other and to be rotatable with each other.
The guide member is composed of a pair of roller-shaped members or a pair of spherical members arranged so as to face each other with the insertion hole interposed therebetween, and the pair of roller-shaped members or the pair of spherical members form the insertion hole in the case member. The roller-shaped member or spherical member located on one end surface side of the case member and the roller-shaped member or spherical member located on the other end surface side are arranged at at least three positions along the extending direction of the case member. Means the roller-shaped member or spherical member that is attached to the insertion hole in the same phase and is located at both ends of the case member, and the roller-shaped member or spherical member that is located between them. A welded wire guide member, characterized in that the wheels are mounted with a phase difference of 90 degrees with respect to the circumferential direction. The case member has a convex portion formed on one end surface and a concave portion into which the convex portion can be fitted is formed on the other end surface, and the concave portion of one case member in the adjacent case member of the other case member. The welding wire according to claim 1, wherein the convex portion is fitted so that the convex portion can be brought into contact with and separated from each other, and the convex portion is guided and rotated in the concave portion to be rotatable with respect to each other. Guide member. The welding wire guide member according to claim 2, wherein each of the convex portion and the concave portion has a curved shape and can be matched in a fitted state. The pair of roller-shaped members or spherical members are arranged at three locations along the extending direction of the insertion holes in the case member, and the roller-shaped members or spherical members located at both ends of the case member. The welding wire guide member according to any one of claims 1 to 3, wherein a roller-shaped member or a spherical member located at a central portion is attached with a phase difference of 90 degrees with respect to the circumferential direction. The insertion hole is formed by continuously reducing the diameter from the opening to the pair of roller-shaped members or spherical members located at the ends to form a tapered inner peripheral surface, and the welding wire is inserted through the opening. The welding wire guide member according to claim 4 , wherein the weld wire guide member can be guided between the pair of roller-shaped members or spherical members.

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