JP2020168656A - Wire feeding device - Google Patents

Abstract

To provide a wire feeding device suitable for improving durability.SOLUTION: A wire feeding device A1 includes a wire feeding mechanism which feeds out a welding wire wound around a wire reel in a predetermined feeding direction X and a box-like case 1 storing the wire feeding mechanism, in which the case 1 includes a bottom wall composed of a metal material, first and second front struts erected from one Y1 side in the width direction of the bottom wall and other Y2 side in the width direction that are in front X1 side in the feeding direction of the bottom wall, first and second rear struts erected from one Y1 side in the width direction of the bottom wall and other Y2 side in the width direction that are in rear X2 side in the feeding direction of the bottom wall, and a ceiling wall 12 which is supported by the first and second front struts and the first and second rear struts and faces the bottom wall, and further includes a front panel 3 and a rear panel 4 which surround the front X1 end in the feeding direction of the case 1 and the rear X2 in the feeding direction, are formed of a resin material and have rectangular annular shapes.SELECTED DRAWING: Figure 1

Description

The present invention relates to a wire feeding device.

In the consumable electrode type gas shielded arc welding, automatic welding using a welding robot or a traveling carriage and semi-automatic welding operated by an operator are adopted. During welding work such as automatic welding, the welding wire is sent out toward the welding torch by the wire feeding device, and electric power and shield gas are supplied to the welding torch.

For example, the wire feeding device used in semi-automatic welding may have a relatively wide work area depending on the site where the welding work is performed. When working inside a large structure, the work area is relatively large. At such a welding work site, the floor surface of the work place has many dents and cables, and it is not suitable to attach wheels to the wire feeding device for transportation. Therefore, it is necessary for the operator to manually carry the welding torch and the wire feeding device according to the welding location. A portable wire feeding device suitable for being carried by an operator is disclosed in, for example, Patent Document 1.

The wire feeding device described in Patent Document 1 includes a box-shaped case and a wire feeding mechanism housed in the case. The case is made of, for example, a steel plate (made of steel) and has a rectangular parallelepiped shape. The wire feeding mechanism feeds the welded wire wound around the wire reel in the feeding direction along the longitudinal horizontal direction of the case. The ceiling wall of the case is provided with a handle for carrying by hand. In a welding work site where it is necessary to carry the wire feeder as described above, the wire feeder may be dragged around, for example, through a cable of a welding torch and used relatively messily. The conventional steel box-shaped case is easily deformed by an impact in such a usage environment. The conventional wire feeding device has room for improvement in terms of durability depending on the environment of the welding work site.

Japanese Unexamined Patent Publication No. 2006-7264

The present invention has been conceived under such circumstances, and a main object of the present invention is to provide a wire feeding device suitable for improving durability.

In order to solve the above problems, the following technical means are adopted in the present invention.

The wire feeding device provided by the present invention includes a wire feeding mechanism that feeds a welded wire wound around a wire reel in a predetermined feeding direction, and a box-shaped case that houses the wire feeding mechanism. In the wire feeding device, each of the cases is made of a metal material, and the bottom wall and the bottom wall which is the front side of the bottom wall in the feeding direction and perpendicular to the feeding direction. The first and second front columns that stand up from one end side and the other end side in the width direction of, and the one end side and the other end side of the bottom wall in the width direction that are the rear side in the feeding direction of the bottom wall. Includes first and second rear columns that stand up from the side, the first and second front columns, and a ceiling wall that is supported by the first and second rear columns and faces the bottom wall. A rectangular annular front panel made of a resin material surrounding the front end of the case in the feeding direction and a rectangular annular rear panel made of a resin material surrounding the rear end of the case in the feeding direction. , Are further provided.

In a preferred embodiment, the front panel encloses the front end of each of the bottom wall and the ceiling wall in the feeding direction and the first and second front columns, and the rear panel is the bottom wall and the bottom wall. Enclose the rear end of each of the ceiling walls in the feeding direction and the first and second rear columns.

In a preferred embodiment, the case comprises a first side wall covering a first opening surrounded by a bottom wall, a ceiling wall, a first front strut and a first rear strut, and a bottom wall. , The ceiling wall, the second side wall covering the second opening surrounded by the second front support and the second rear support, and the peripheral edge of the ceiling wall has a rectangular shape in a plan view. A groove for the seal member is formed, and an annular ceiling seal member is mounted on the groove for the seal member, and the upper part of the first and second side walls, the upper part of the front panel, and the rear panel. The upper part of the ceiling seal member is pressed against the ceiling seal member.

In a preferred embodiment, the first and second front seal members arranged in a range from the ceiling wall to the bottom wall via the first and second front columns, and the first and second front seal members from the ceiling wall to the first. It has a first and second rear sealing member arranged in a range extending to the bottom wall through the first and second rear columns, respectively, and the first side wall is the first front sealing member and the first side wall. The first rear seal member is pressed against the entire surface, and the second side wall is pressed against the entire second front seal member and the second rear seal member.

In a preferred embodiment, at least one of the first and second side walls is openable and closable.

In a preferred embodiment, the case has a front beam portion in which both ends are connected to the first and second front columns and the ceiling wall is fixed, and both ends are the first and second rear columns. Includes a rear beam portion that is connected to and to which the ceiling wall is fixed.

In a preferred embodiment, the case includes the bottom wall, the ceiling wall and the front wall arranged in an area surrounded by the first and second front struts when viewed in the feeding direction. The front wall is provided with a torch connecting portion for connecting the welding torch and a guard portion protruding forward from the torch connecting portion in the feeding direction.

In a preferred embodiment, an insulating sheet is arranged on the inner surface of the case at a portion facing the wire reel and a portion facing the welding wire wound around the wire reel.

The wire feeding device according to the present invention has a housing structure in which resin panels (front panel and rear panel) as strength members are incorporated at both ends of a skeleton structure made of a metal case. According to such a configuration, for example, by using a relatively thin steel plate or the like for the case, it is possible to reduce the weight and increase the strength of the entire housing. Further, both ends of the case in the feeding direction are made of resin and surrounded by a rectangular annular front panel and a rear panel. This causes the front and rear panels to come into contact with the work floor when using the wire feeder. According to such a configuration, the wire feeding device can be easily dragged and moved by sliding the resin front panel and the rear panel on the floor surface of the work place. Therefore, it is suitable for use in a welding work site having a wide work area, and the durability of the wire feeding device can be improved.

Other features and advantages of the present invention will become more apparent with the detailed description given below with reference to the accompanying drawings.

It is a perspective view which shows an example of the wire feeding device which concerns on this invention. It is a perspective view of the wire feeding device shown in FIG. 1 as seen from the rear side. It is a top view of the wire feeding device shown in FIG. It is a figure which looked at the wire feeding device shown in FIG. 1 from diagonally lower side on the rear side in the feeding direction. FIG. 3 is a perspective view showing a state in which the first and second side walls, the front wall, the rear wall, the front panel, and the rear panel are removed from the wire feeding device shown in FIG. It is a perspective view which further omitted the internal structure from FIG. FIG. 6 is a view of the configuration shown in FIG. 6 as viewed from the front side in the feeding direction. It is a perspective view which looked at the structure shown in FIG. 6 from the back side. FIG. 6 is a view of the configuration shown in FIG. 6 as viewed from the rear side in the feeding direction. It is an enlarged sectional view of the main part along XX of FIG. It is an enlarged cross-sectional view of a main part along XI-XI of FIG. 3 which omitted the internal structure. It is an enlarged cross-sectional view of the main part along XII-XII of FIG. 3 which omitted the internal structure. It is an enlarged cross-sectional view of the main part along XIII-XIII of FIG. 3 which omitted the internal structure.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

1 to 9 show an example of a wire feeding device according to the present invention. The wire feeding device A1 of the present embodiment feeds the welding wire to a welding torch (not shown). The wire feeding device A1 includes a case 1, a front panel 3, a rear panel 4, and a wire feeding mechanism 6.

Case 1 has a substantially rectangular parallelepiped box shape. The longitudinal horizontal direction of the case 1 is parallel to the feeding direction X of the welding wire. In FIGS. 1 to 9, the front side (hereinafter, appropriately referred to as “feeding direction front X1”) and the rear side (hereinafter, appropriately referred to as “feeding direction rearward X2”) of the welding wire in the X feeding direction are appropriately distinguished. Represent. In the illustrated wire feeding device A1, the vertical direction is defined with reference to the normally used posture.

As shown in FIGS. 1 to 4, the case 1 includes a bottom wall 11, a ceiling wall 12, a first side wall 13, a second side wall 14, a front wall 15, and a rear wall 17. As shown in FIGS. 5 to 9, the case 1 also includes a first front strut 21, a second front strut 22, a first rear strut 23, a second rear strut 24, a front beam portion 25 and a rear beam. A unit 26 is provided. These elements constituting the case 1 are made of a metal material, for example, a steel plate.

The bottom wall 11 is the lowest portion of the case 1. The bottom wall 11 has an elongated shape with the feeding direction X as the longitudinal direction. The peripheral edge of the bottom wall 11 is an extending portion 111 that bends and hangs down.

The first front strut 21 and the second front strut 22 are arranged at the front X1 end of the bottom wall 11 in the feeding direction. The first front strut 21 and the second front strut 22 are separated from each other in the width direction Y of the bottom wall 11 (horizontal direction perpendicular to the feeding direction X). The first front support column 21 stands up from one end of the bottom wall 11 in the width direction Y (hereinafter, appropriately referred to as “width direction one Y1”) and extends upward. The second front support column 22 stands up from the other end of the bottom wall 11 in the width direction Y (hereinafter, appropriately referred to as “the other Y2 in the width direction”) and extends upward. The lower ends of the first front strut 21 and the second front strut 22 are fixed to the bottom wall 11 by appropriate means such as bolting.

The first rear strut 23 and the second rear strut 24 are arranged at the rear X2 end of the bottom wall 11 in the feeding direction. The first rear strut 23 and the second rear strut 24 are separated in the width direction Y of the bottom wall 11. The first rear support column 23 stands up from the end of Y1 in the width direction of the bottom wall 11 and extends upward. The second rear support column 24 stands up from the end of the other Y2 in the width direction of the bottom wall 11 and extends upward. The lower ends of the first rear strut 23 and the second rear strut 24 are fixed to the bottom wall 11 by appropriate means such as bolting.

The ceiling wall 12 is supported by the first front strut 21, the second front strut 22, the first rear strut 23, and the second rear strut 24, and faces the bottom wall 11. In the present embodiment, as shown in FIGS. 7 and 11, both ends of the front beam portion 25 are connected to the upper ends of the first front strut 21 and the second front strut 22. Further, as shown in FIGS. 9 and 13, both ends of the rear beam portion 26 are connected to the upper ends of the first rear strut 23 and the second rear strut 24. Then, the ceiling wall 12 is fixed to the front beam portion 25 and the rear beam portion 26.

A handle 121 is provided at the center of the upper surface of the ceiling wall 12. A groove 124 for a sealing member is formed on the peripheral edge of the ceiling wall 12. The groove 124 for the seal member has a rectangular shape in a plan view. The seal member groove 124 is formed by appropriately bending various peripheral edges of the ceiling wall 12, and has a U-shaped cross section. A pair of hinge portions 122 and 123 are attached to the vicinity of the peripheral edge of the ceiling wall 12. The pair of hinge portions 122 are located at one end of Y1 in the width direction and are arranged apart from each other in the feeding direction X. The pair of hinge portions 123 are located at the ends of the other Y2 in the width direction, and are arranged apart from each other in the feeding direction X.

The first side wall 13 is arranged at the end of Y1 in the width direction of the bottom wall 11. The first side wall 13 covers the first opening 101 surrounded by the bottom wall 11, the ceiling wall 12, the first front support column 21, and the first rear support column 23. The upper 131 of the first side wall 13 is connected to a pair of hinge portions 122. The first side wall 13 is rotatable around an axis along the feeding direction X at the upper portion 131, and can be opened and closed. A locking portion 132 is provided near the lower end of the first side wall 13. The locking portion 132 can be switched from a state in which the opening operation of the closed first side wall 13 is prevented to a state in which the closing operation is permitted by an operation from the outside.

The second side wall 14 is arranged at the end of Y2 on the other side in the width direction of the bottom wall 11. The second side wall 14 covers the second opening 102 surrounded by the bottom wall 11, the ceiling wall 12, the second front column 22, and the second rear column 24. The upper 141 of the second side wall 14 is connected to a pair of hinge portions 123. The second side wall 14 is rotatable around an axis along the feeding direction X at the upper portion 141, and can be opened and closed. A locking portion 142 is provided near the lower end of the second side wall 14. The locking portion 142 can be switched from a state in which the opening operation of the closed second side wall 14 is prevented to a state in which the closing operation is permitted by an operation from the outside.

As shown in FIG. 1, the front wall 15 is arranged on the front X1 side of the bottom wall 11 in the feeding direction. The front wall 15 is arranged in an area surrounded by a bottom wall 11, a ceiling wall 12, a first front support column 21, and a second front support column 22 when viewed in the feeding direction X. The front wall 15 is provided with a torch connection portion 161 and a guard portion 162.

The torch connection portion 161 is a portion for connecting a welding torch (not shown). The torch connection portion 161 is configured to include a connector that projects from the front wall 15 to the front X1 in the feeding direction, and the end of the cable of the welding torch is connected to the connector. The guard portion 162 projects from the front wall 15 to the front X1 in the feeding direction. As shown in FIG. 3, the guard portion 162 projects from the torch connection portion 161 toward the front X1 side in the feeding direction. In the present embodiment, the guard portions 162 are provided in pairs separated from each other in the width direction Y of the bottom wall 11. The torch connection portion 161 is located between the pair of guard portions 162 in the width direction Y of the bottom wall 11. Each guard portion 162 is formed of a U-shaped bar, and both ends of the wire are attached to the front wall 15 to form an annular shape.

As shown in FIG. 2, the rear wall 17 is arranged on the rear X2 side of the bottom wall 11 in the feeding direction. The rear wall 17 is arranged in an area surrounded by a bottom wall 11, a ceiling wall 12, a first rear strut 23, and a second rear strut 24 when viewed in the feeding direction X. Through holes 171 are formed at appropriate positions on the rear wall 17. The cable bundle C1 is pulled into the case 1 through the through hole 171. The cable bundle C1 is a cable assembly in which, for example, a power cable, a gas hose, and a control cable (none of which are shown) are inserted.

In the present embodiment, as shown in FIGS. 6 to 9, the case 1 includes a ceiling seal member 50, a first front seal member 51, a second front seal member 52, a first rear seal member 53, and a first rear seal member 53. The rear seal member 54 of 2 is attached. As shown in FIGS. 10 to 13, the ceiling seal member 50 is mounted in the seal member groove 124 of the ceiling wall 12. The ceiling seal member 50 has an annular shape and a rectangular cross section.

As shown in FIGS. 6, 7, and 11, the first front seal member 51 is arranged in a range from the ceiling wall 12 to the bottom wall 11 via the first front support column 21. As shown in FIGS. 7, 8 and 11, the second front seal member 52 is arranged in a range from the ceiling wall 12 to the bottom wall 11 via the second front support column 22. Further, as shown in FIGS. 6, 8, 9, and 13, the first rear seal member 53 and the second rear seal member 54 are the first rear support column 23 and the second rear from the ceiling wall 12. They are arranged in a range extending to the bottom wall 11 via the support columns 24.

As shown in FIGS. 11 and 13, in a state where the first side wall 13 is closed, the upper 131 of the first side wall 13 is pressed against a part of the ceiling seal member 50. Further, with the first side wall 13 closed, the first side wall 13 is pressed against the entire first front seal member 51 and the first rear seal member 53.

In the state where the second side wall 14 is closed, the upper portion 141 of the second side wall 14 is pressed against a part of the ceiling seal member 50. Further, with the second side wall 14 closed, the second side wall 14 is pressed against the entire second front seal member 52 and the second rear seal member 54.

The front panel 3 is attached to the front X1 side of the case 1 in the feeding direction. The front panel 3 is made of a resin material. The front panel 3 has a rectangular ring shape and surrounds the front X1 end of the case 1 in the feeding direction. The front panel 3 includes a front bottom portion 31, a front first side portion 32, a front first side portion 32, and an upper portion 34.

The front bottom portion 31 surrounds the front X1 end of the bottom wall 11 in the feeding direction, and projects below the bottom wall 11. As shown in FIGS. 4 and 10, the front bottom 31 has a bottom base 311 and a plurality of ribs 312.

The bottom base portion 311 is separated downward from the bottom wall 11 and extends in the width direction Y. The bottom base 311 has a plurality of bottom protrusions 313. The plurality of bottom protrusions 313 are arranged at intervals in the width direction Y. The bottom protruding portion 313 projects downward from other parts.

The plurality of ribs 312 extend upward from the bottom base 311 and may abut on the bottom wall 11. The plurality of ribs 312 are arranged at intervals in the width direction Y. Each rib 312 has a plate shape along a plane formed by the feeding direction X and the vertical direction. Here, "the rib 312 may abut on the bottom wall 11" includes a state in which the rib 312 abuts on the bottom wall 11 and a state in which a slight gap is provided between the rib 312 and the bottom wall 11. .. In a state where there is a gap between the rib 312 and the bottom wall 11, the rib 312 may come into contact with the bottom wall 11 due to elastic deformation due to a pressing load from the bottom base portion 311 side. The same applies to the rib 412 in the rear panel 4, which will be described later, in that it can abut on the bottom wall 11.

As shown in FIGS. 1, 3, and 10, the front first side portion 32 surrounds the first front support column 21. The front first side portion 32 has a plurality of first side protrusions 321. The plurality of first side protrusions 321 are arranged at intervals in the vertical direction. Each first side projecting portion 321 projects toward the Y1 side in the width direction with respect to the other portion. Further, each of the first side protrusions 321 protrudes from the first side wall 13 in the width direction on the Y1 side.

As shown in FIGS. 2, 3 and 10, the front second side portion 33 surrounds the second front support column 22. The front second side portion 33 has a plurality of second side portion protrusions 331. The plurality of second side protrusions 331 are arranged at intervals in the vertical direction. Each second side projecting portion 331 projects from the other portion to the other Y2 side in the width direction. Further, each second side projecting portion 331 projects from the second side wall 14 toward the other Y2 side in the width direction.

The upper portion 34 surrounds the front X1 end of the ceiling wall 12 in the feeding direction, and projects upward from the ceiling wall 12. The upper portion 34 covers a part of the ceiling seal member 50. Specifically, the upper portion 34 is pressed against the portion of the ceiling seal member 50 that is not covered by the first side wall 13 and the second side wall 14 on the front X1 side in the feeding direction.

The rear panel 4 is attached to the rear X2 side of the case 1 in the feeding direction. The rear panel 4 is made of a resin material. The rear panel 4 has a rectangular annular shape and surrounds the rear X2 end of the case 1 in the feeding direction. The rear panel 4 includes a rear bottom portion 41, a rear first side portion 42, a rear second side portion 43, and an upper portion 44.

The rear bottom portion 41 surrounds the rear X2 end of the bottom wall 11 in the feeding direction, and projects below the bottom wall 11. As shown in FIGS. 4 and 12, the rear bottom 41 has a bottom base 411 and a plurality of ribs 412.

The bottom base 411 is separated downward from the bottom wall 11 and extends in the width direction Y. The bottom base 411 has a plurality of bottom protrusions 413. The plurality of bottom protrusions 413 are arranged at intervals in the width direction Y. The bottom protruding portion 413 projects downward from other parts.

The plurality of ribs 412 extend upward from the bottom base 411 and may abut on the bottom wall 11. The plurality of ribs 412 are arranged at intervals in the width direction Y. Each rib 412 has a plate shape along a plane formed by the feeding direction X and the vertical direction.

As shown in FIGS. 1, 3, and 12, the rear first side portion 42 surrounds the first rear strut 23. The rear first side portion 42 has a plurality of first side protrusions 421. The plurality of first side protrusions 421 are arranged at intervals in the vertical direction. Each first side projecting portion 421 projects toward the Y1 side in the width direction with respect to the other portion. Each of the first side projecting portions 421 protrudes from the first side wall 13 toward the Y1 side in the width direction.

As shown in FIGS. 2, 3 and 12, the rear second side portion 43 surrounds the second rear strut 24. The rear second side portion 43 has a plurality of second side protrusions 431. The plurality of second side protrusions 431 are arranged at intervals in the vertical direction. Each second side projecting portion 431 projects from the other portion to the other Y2 side in the width direction. Each second side projecting portion 431 projects from the second side wall 14 toward the other Y2 side in the width direction.

The upper portion 44 surrounds the rear X2 end of the ceiling wall 12 in the feeding direction, and projects upward from the ceiling wall 12. The upper portion 44 covers a part of the ceiling seal member 50. Specifically, the upper portion 44 is pressed against the portion of the ceiling seal member 50 that is not covered by the first side wall 13 and the second side wall 14 on the rear X2 side in the feeding direction.

The rear panel 4 has the same configuration as the front panel 3. The front bottom 31, the front first side 32, the front first side 32, and the top 34 in the front panel 3 are the rear bottom 41, the rear second side 43, the rear first side 42, and the rear first side 42 in the rear panel 4. Corresponds to each of the upper 44.

When the front panel 3 and the rear panel 4 having the above configuration are attached to the case 1, the front X1 end in the feeding direction and the rear X2 end in the feeding direction of the case 1 are brought close to the case 1 along the feeding direction X. Attach to. The front panel 3 (rear panel 4) is fixed to the case 1 by using, for example, a mounting hole 301 (mounting hole 401) formed at an appropriate position on the front panel 3 (rear panel 4) along the feeding direction X. This is done by fastening or the like (see FIGS. 10 and 12). Further, the front panel 3 and the rear panel 4 are formed with gaps at appropriate positions, but are shaped so that the mold can be opened in the feeding direction X during resin molding. As a result, the front panel 3 and the rear panel 4 have a shape that does not require undercutting, and resin molding is easy.

The wire feeding mechanism 6 shown in FIG. 5 feeds the welded wire W1 wound around the wire reel 70 in the feeding direction X along the longitudinal horizontal direction of the case 1. Although not shown, the wire feeding mechanism 6 includes, for example, a feeding roller and a pressure roller that sandwich the welding wire W1 and a feeding motor that rotationally drives the feeding roller.

The wire reel 70 is supported by the reel shaft 71 shown in FIG. The reel shaft 71 is fixed to the reel shaft mounting member 72. The reel shaft mounting member 72 is made of, for example, a steel plate. The reel shaft mounting member 72 has a posture in which the mounting portion of the reel shaft 71 is along a vertical surface, and both upper and lower ends are bent and fixed to the ceiling wall 12 and the bottom wall 11.

In the present embodiment, the wire reel cover 73 is arranged outside the wire reel 70 in the radial direction. The wire reel cover 73 covers most of the outer circumference of the wire reel 70 except for a part below the wire reel 70. The wire reel cover 73 is made of an insulating material such as resin.

As shown in FIGS. 1, 5, and 6, in the present embodiment, the insulating sheets 81 and 82 are arranged on the inner surface of the case 1. The insulating sheet 81 is arranged on the inner surface of the bottom wall 11 and is located below the wire reel 70. The insulating sheet 81 faces the welding wire W1 wound around the wire reel 70. The insulating sheet 82 is arranged on the inner surface of the first side wall 13. With the first side wall 13 closed, the insulating sheet 82 faces the side surface of the wire reel 70. In addition, in FIGS. 1 and 6, the insulating sheet 81 or the insulating sheet 82 is hatched.

Next, the operation of this embodiment will be described.

The wire feeding device A1 is used, for example, for welding work inside a large structure. Welding work inside a large structure has a relatively large work area. At a welding work site where the work area is wide, the wire feeder A1 is often carried. Further, the wire feeding device A1 may be dragged around, for example, via a cable of a welding torch, and may be used relatively randomly.

In the present embodiment, the case 1 accommodating the wire feeding mechanism 6 includes a bottom wall 11, a first front strut 21, a second front strut 22, a first rear strut 23, a second rear strut 24, and It is provided with a ceiling wall 12 and has a box shape. Each of these elements constituting Case 1 is made of a metallic material. The front X1 end in the feeding direction and the rear X2 end in the feeding direction of the case 1 are surrounded by a rectangular annular front panel 3 and a rear panel 4 made of a resin material.

As described above, the wire feeding device A1 of the present embodiment has a housing structure in which resin panels (front panel 3 and rear panel 4) as strength members are incorporated at both ends of the skeleton structure of the metal case 1. ing. According to such a configuration, for example, the case 1 can be made lighter by using a relatively thin steel plate or the like, and the strength of the entire housing by the case 1, the front panel 3 and the rear panel 4 can be increased. it can.

Further, both ends of the case 1 in the feeding direction X are made of resin and are surrounded by a rectangular annular front panel 3 and a rear panel 4. As a result, when the wire feeding device A1 is used, the front panel 3 and the rear panel 4 come into contact with the floor surface of the work place. According to such a configuration, by sliding the resin front panel 3 and the rear panel 4 on the floor surface of the work place, the wire feeding device A1 can be easily moved by dragging. Therefore, it is suitable for use in a welding work site having a wide work area, and the durability of the wire feeding device A1 can be improved.

Even if the front panel 3 or the rear panel 4 that comes into contact with the floor surface of the work place is damaged, the damaged front panel 3 or the rear panel 4 may be replaced. Therefore, the durability of the case 1 made of a metal material can be enhanced.

A groove 124 for a sealing member having a rectangular shape in a plan view is formed on the peripheral edge of the ceiling wall 12. An annular ceiling seal member 50 is mounted in the seal member groove 124. The upper 131 of the first side wall 13, the upper 141 of the second side wall 14, the upper 34 of the front panel 3, and the upper 44 of the rear panel 4 are pressed against the ceiling seal member 50. According to such a configuration, the outer peripheral edge of the ceiling wall 12 is appropriately sealed by the cooperation of the first side wall 13, the second side wall 14, the front panel 3 and the rear panel 4, and the wire feeding device A1. It is possible to prevent the intrusion of moisture from the upper part.

In the present embodiment, the wire feeding device A1 includes a first front seal member 51, a second front seal member 52, a first rear seal member 53, and a second rear seal member 54. The first front seal member 51 is arranged in a range from the ceiling wall 12 to the bottom wall 11 via the first front support column 21. The second front seal member 52 is arranged in a range from the ceiling wall 12 to the bottom wall 11 via the second front support column 22. The first rear seal member 53 and the second rear seal member 54 are arranged in a range from the ceiling wall 12, through the first rear column 23 and the second rear column 24, to the bottom wall 11, respectively. Further, the first side wall 13 is pressed against the entire first front seal member 51 and the first rear seal member 53, and the second side wall 14 is the second front seal member 52 and the second rear seal. It is pressed against the entire member 54. According to such a configuration, it is possible to prevent the intrusion of moisture from the peripheral edge of the first side wall 13 and the peripheral edge of the second side wall 14.

The first side wall 13 and the second side wall 14 are openable and closable. According to such a configuration, the maintenance of the wire feeding device A1 can be easily performed by opening the first side wall 13 or the second side wall 14 as appropriate. Further, the first side wall 13 in the closed state is pressed against the first front seal member 51 and the first rear seal member 53, and the second side wall 14 in the closed state, the second front seal member 52 and the second. Press-contact with the rear seal member 54 of the. As a result, the waterproofness of the peripheral edges of the first side wall 13 and the second side wall 14 that can be opened and closed is maintained.

Case 1 includes a front beam portion 25 and a rear beam portion 26. Both ends of the front beam portion 25 are connected to the first front strut 21 and the second front strut 22. Both ends of the rear beam portion 26 are connected to the first rear strut 23 and the second rear strut 24. The ceiling wall 12 is connected to the front beam portion 25 and the front beam portion 25. According to such a configuration, the strength of the case 1 can be efficiently increased.

Case 1 includes a front wall 15. The front wall 15 is provided with a torch connecting portion 161 for connecting the welding torch and a guard portion 162. The guard portion 162 projects from the torch connecting portion 161 toward the front X1 side in the feeding direction. According to the configuration including the guard portion 162, it is possible to prevent the torch connection portion 161 from being damaged. In the present embodiment, the guard portions 162 are provided in pairs separated from each other in the width direction Y of the bottom wall 11, and the torch connection portions 161 are provided between the pair of guard portions 162 in the width direction Y of the bottom wall 11. To position. According to such a configuration, the torch connection portion 161 can be more appropriately protected. Further, during the welding operation, it is convenient to drag and move the wire feeding device A1 by grasping the pair of guard portions 162.

In the present embodiment, the insulating sheet 81 and the insulating sheet 82 are arranged on the inner surface of the case 1. The insulating sheet 82 is arranged at a portion facing the wire reel 70, and the insulating sheet 81 is arranged at a portion facing the welding wire W1 wound around the wire reel 70. According to such a configuration, it is possible to prevent the welding wire W1 in the case 1 from coming into direct contact with the metal case 1. Therefore, the insulating property between the metal case 1 and the welding wire W1 inside the case 1 can be improved.

Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to the above-described embodiments, and any modification within the scope of the matters described in each claim is the scope of the present invention. Is included in.

A1: Wire feeding device, W1: Welding wire, X: Feeding direction, Y: Width direction, 1: Case, 101: 1st opening, 102: 2nd opening, 11: Bottom wall, 12: Ceiling wall, 124 : Seal member groove, 13: First side wall, 131: Upper part (of first side wall), 14: Second side wall, 141: Upper part (of second side wall), 15: Front wall, 161: Torch Connection part, 162: Guard part, 21: First front strut, 22: Second front strut, 23: First rear strut, 24: Second rear strut, 25: Front beam part, 26: Rear beam Part 3: Front panel, 34: Upper part (of front panel) 4: Rear panel, 44: Upper part (of rear panel), 50: Ceiling seal member, 51: First front seal member, 52: Second Front seal member, 53: 1st rear seal member, 54: 2nd rear seal member, 6: wire feeding mechanism, 70: wire reel, 81, 82: insulating sheet

Claims (7)

A wire feeding device including a wire feeding mechanism that feeds a welded wire wound on a wire reel in a predetermined feeding direction, and a box-shaped case that houses the wire feeding mechanism.
The case has a bottom wall made of a metal material, and one end side and the other end in the width direction of the bottom wall, which is the front side of the bottom wall in the feeding direction and perpendicular to the feeding direction. The first and second front columns that stand up from the side, and the first and second columns that stand behind the bottom wall in the feeding direction and stand up from one end side and the other end side of the bottom wall in the width direction. Includes the first and second front struts and the ceiling wall supported by the first and second rear struts and facing the bottom wall.
A rectangular annular front panel made of a resin material, which surrounds the front end of the case in the feeding direction,
A wire feeding device that surrounds the rear end of the case in the feeding direction and further comprises a rectangular annular rear panel made of a resin material. In the case, the bottom wall, the ceiling wall, the first side wall covering the first opening surrounded by the first front support and the first rear support, the bottom wall, the ceiling wall, and the first. Includes a second side wall covering a second opening surrounded by two front struts and the second rear stanchion.
A groove for a sealing member having a rectangular shape in a plan view is formed on the peripheral edge of the ceiling wall.
An annular ceiling seal member is mounted in the groove for the seal member.
The wire feeding device according to claim 1, wherein the upper part of the first and second side walls, the upper part of the front panel, and the upper part of the rear panel are pressed against the ceiling seal member. The first and second front seal members arranged in the range from the ceiling wall to the bottom wall via the first and second front columns, respectively.
It has first and second rear seal members arranged in a range from the ceiling wall to the bottom wall via the first and second rear columns, respectively.
The first side wall is pressed against the entire first front seal member and the first rear seal member.
The wire feeding device according to claim 2, wherein the second side wall is pressed against the entire second front seal member and the second rear seal member. The wire feeding device according to claim 2 or 3, wherein at least one of the first and second side walls is openable and closable. In the case, both ends are connected to the first and second front columns and the ceiling wall is fixed to the front beam portion, and both ends are connected to the first and second rear columns and the ceiling is fixed. The wire feeding device according to any one of claims 1 to 4, further comprising a rear beam portion to which a wall is fixed. The case includes the bottom wall, the ceiling wall, and the front wall arranged in the area surrounded by the first and second front columns when viewed in the feeding direction.
The front wall is provided with a torch connecting portion for connecting a welding torch and a guard portion protruding forward from the torch connecting portion in the feeding direction, according to claims 1 to 5. The wire feeding device according to any one. The invention according to any one of claims 1 to 6, wherein an insulating sheet is arranged on the inner surface of the case at a portion facing the wire reel and a portion facing the welding wire wound around the wire reel. Wire feeder.

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