Welding apparatus

Abstract

To provide a welding device capable of reducing a work burden on a worker and easily inserting a wire into a wire supply part.SOLUTION: The wire reel includes a winding drum 11 that winds the wire 2 around the first rotational axis CL1, the wire feeding unit 200 includes a wire insertion port 200h into which the wire 2 is inserted, and the wire insertion port 200h is provided with a wire guide member 100 that guides a tip of the wire 2 to the wire insertion port 200h, the wire guide member 100 includes a tubular main body portion 101, and when the main body portion 101 is viewed from a direction in which the first rotational axis CL1 extends, a distance between a first sidewall S1 located on a side closer to the wire reel 10 and a second sidewall S2 located on a side farther from the wire reel 10 gradually decreases toward a wire insertion port 200h.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to the configuration of a welding device. [Background technology]

[0002] In a welding machine for automatic submerged arc welding, the wire is wound on a wire roll. When the welding wire is attached to the welding machine, the worker straightens out the curl of the wire and inserts it into the wire supply section (strainer) of the welding machine.

[0003] Wire guiding devices are disclosed in Japanese Utility Model Publication No. 52-111724 (Patent Document 1), Japanese Utility Model Publication No. 53-26321 (Patent Document 2), Japanese Patent Publication No. 3-297568 (Patent Document 3), and Japanese Patent Publication No. 2015-424 (Patent Document 4), etc. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 52-111724 [Patent Document 2] Japanese Utility Model Application Publication No. 53-26321 [Patent Document 3] Japanese Patent Application Publication No. 3-297568 [Patent Document 4] Japanese Patent Application Laid-Open No. 2015-424 Summary of the Invention [Problem to be solved by the invention]

[0005] Because the wire insertion opening of the wire supply unit is small, it is difficult for an operator to insert the wire into the wire supply unit of the welding device while straightening out the arc-shaped curl of the wire.

[0006] This disclosure has been made to solve the above-mentioned problems, and aims to provide a welding device that reduces the workload on the operator and allows the wire to be easily inserted into the wire supply section. [Means for solving the problem]

[0007] [1] The welding apparatus of the present disclosure includes a wire reel wound with wire, a wire supply unit that supplies the wire to a location to be welded, and a nozzle that extends from the wire supply unit downward from the location to be welded and guides the wire supplied from the wire supply unit to the location to be welded, wherein the wire reel includes a winding drum that winds the wire around a first rotational axis, the wire supply unit includes a wire insertion port through which the wire is inserted, and the wire insertion port is provided with a wire guide member that guides the tip of the wire to the wire insertion port, and the wire guide member includes a cylindrical main body, and when the main body is viewed from the direction in which the first rotational axis extends, the distance between a first side wall located closer to the wire reel and a second side wall located farther from the wire reel gradually narrows toward the wire insertion port.

[0008] [2]: In the welding device described in [1], the main body has a second width along a direction perpendicular to the first rotation axis that is longer than a first width along the first rotation axis.

[0009] [3]: In the welding device according to [1] or [2], the first inclination angle of the first side wall is larger than the second inclination angle of the second side wall with respect to a perpendicular line extending in the vertical direction.

[0010] [4]: In the welding device described in any one of [1] to [3], a plurality of guide rollers having a second rotation center axis extending in the same direction as the first rotation center axis are arranged on at least one of the first side wall and the second side wall along the wire insertion direction. [Effects of the Invention]

[0011] The welding device of the present disclosure can reduce the workload on the worker and allow the wire to be easily inserted into the strainer. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram showing a configuration of a welding device according to a first embodiment. [Figure 2] 1 is a side view showing the configuration of a wire guide member according to a first embodiment. FIG. [Figure 3] FIG. 2 is a perspective view of the wire guide member of the first embodiment. [Figure 4] FIG. 10 is a perspective view of a wire guide member according to a second embodiment. [Figure 5] FIG. 11 is a front view of a wire guide member according to a third embodiment. [Figure 6] FIG. 11 is a side view of a wire guide member according to a third embodiment. [Figure 7] FIG. 10 is a longitudinal sectional view of a wire guide member according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] The configuration of the welding device according to the present embodiment will be described below with reference to the drawings. In the embodiments described below, when numbers, quantities, etc. are mentioned, the scope of the present invention is not necessarily limited to those numbers, quantities, etc., unless otherwise specified. The same reference numerals are used for the same or equivalent parts, and redundant descriptions may not be repeated. It is intended from the beginning that the configurations in the embodiments may be used in appropriate combinations.

[0014] <First Embodiment> (welding equipment 1) The configuration of a welding device 1 according to the present embodiment will be described with reference to Fig. 1. Fig. 1 is a diagram showing the configuration of a welding device 1 according to the present embodiment. This welding device 1 is a device for performing automatic submerged arc welding.

[0015] The welding device 1 includes a wire reel 10, a wire supply unit 200, a torch unit 30, a nozzle 40, a hopper 60, and a carriage unit 70.

[0016] The wire reel 10 is a part that holds the wire 2. The wire reel 10 includes a winding drum 11. The winding drum 11 has a first rotation center axis CL1 and supports the wire 2 that is wound around the circumferential surface of the winding drum 11. One end of the wire 2 is pulled out to the wire supply unit 200 while rotating in the circumferential direction relative to the winding drum 11. The wire 2 is covered by a wire reel cover 20.

[0017] One end of the wire 2 unwound from the wire reel 10 passes through the inside of the wire supply unit 200. The wire supply unit 200 supplies the wire 2 to the torch unit 30. The wire 2 may be protected by being covered with a conduit between being unwound from the wire reel 10 and being supplied to the wire supply unit 200. The wire 2 is fed from the torch unit 30 to the nozzle 40.

[0018] The wire 2 protrudes toward the areas to be welded at the tip of the nozzle 40. By passing a current through the wire 2 and the areas to be welded, an arc is generated between the wire 2 and the areas to be welded, and the areas to be welded are welded.

[0019] The wire supply unit 200 has a wire insertion port 200h into which the tip of the wire 2 is inserted and through which the wire 2 is sequentially fed. The wire insertion port 200h is provided with a wire guide member 100 that guides the tip of the wire 2 into the wire insertion port 200h and further guides the wire 2 that is sequentially fed out. The detailed structure of the wire guide member 100 will be described later.

[0020] Hopper 60 contains flux, which is supplied to the wire 2 and the area to be welded via hose 61. The flux covers the arc and molten metal, preventing air from entering the area to be welded.

[0021] The carriage unit 70 is located below the welding device 1. The carriage unit 70 is placed, for example, on a rail (not shown). The welding device 1 travels on the rail during welding as the carriage unit 70 is driven.

[0022] The carriage unit 70 includes an arm 71. The arm 71 supports other components such as the wire reel 10. The arm 71 can rotate on the carriage unit 70 around a rotation axis provided on the carriage unit 70. The rotation of the arm 71 allows the orientation of the wire reel 10 and other components to be changed. In this embodiment, for example, the orientation of the wire reel 10 and other components can be changed by gripping the handle 12 attached to the wire reel cover 20 and rotating the wire reel 10.

[0023] (Wire guide member 100) The configuration of the wire guide member 100 will be described with reference to Figures 2 and 3. Figure 2 is a side view showing the configuration of the wire guide member 100, and Figure 3 is a perspective view of the wire guide member.

[0024] The wire guide member 100 includes a cylindrical main body 101. The main body 101 has a conical shape and has an upper opening 102 at its upper end for receiving a large-diameter wire 2, and a lower opening 103 at its lower end for guiding the wire 2 to the wire insertion port 200h. The lower opening 103 is provided with a wire guide tube 104 that is inserted into the wire insertion port 200h.

[0025] The central axis L2 of the main body 101 is preferably inclined toward the wire reel 10 with respect to a perpendicular line L1 extending vertically. As a result, when the main body 101 is viewed from the direction in which the first central axis of rotation CL1 of the wire reel 10 extends, the distance between the first side wall S1 located closer to the wire reel 10 and the second side wall S2 located farther from the wire reel 10 gradually narrows toward the wire insertion opening 200h. With this configuration, the upper opening 102 faces the wire reel 10, making it easier to receive the wire 2.

[0026] Furthermore, even if the cylindrical main body 101 is not conical, for example, a square pyramid, an ellipse, or some other shape, if the cylindrical shape is such that the first inclination angle α1 of the first side wall S1 is greater than the second inclination angle α2 of the second side wall S2, the upper opening 102 will face the wire reel 10 side, making it easier to receive the wire 2.

[0027] As described above, by using the wire guide member 100 in this embodiment, the workload on the worker can be reduced and the wire 2 can be easily inserted into the wire supply part 200.

[0028] (Embodiment 2) A wire guide member 110 in the second embodiment will be described with reference to Fig. 4. The configuration of the welding device 1 is the same as that of the first embodiment. The configuration of the wire guide member is different. Fig. 4 is a perspective view of the wire guide member 110.

[0029] The wire guide member 110 in this embodiment has a quadrangular pyramid shape. The main body 101 has a quadrangular pyramid shape with an upper opening 102 at its upper side for receiving a large-diameter wire 2 and a smaller-diameter lower opening 103 at its lower side for guiding the wire 2 to the wire insertion port 200h. The lower opening 103 is provided with a wire guide tube 104 that is inserted into the wire insertion port 200h.

[0030] The central axis L2 of the main body 101 is preferably inclined toward the wire reel 10 with respect to a perpendicular line L1 extending vertically. As a result, when the main body 101 is viewed from the direction in which the first central axis of rotation CL1 of the wire reel 10 extends, the distance between the first side wall S1 located closer to the wire reel 10 and the second side wall S2 located farther from the wire reel 10 gradually narrows toward the wire insertion opening 200h. With this configuration, the upper opening 102 faces the wire reel 10, making it easier to receive the wire 2.

[0031] Furthermore, the square pyramidal main body 101 has a second width W2 along a direction perpendicular to the first rotation center axis CL1 that is longer than a first width W1 along the first rotation center axis CL1. This is because, since the wire 2 tends to curl in the direction perpendicular to the first rotation center axis CL1, making W2 longer makes it easier to accommodate the wire 2. On the other hand, since the wire 2 does not tend to curl around the first rotation center axis CL1, making the first width W1 shorter than the second width W2 enables the wire guide member 110 to be made more compact.

[0032] As described above, the wire guide member 110 in this embodiment also reduces the workload on the operator and allows the wire 2 to be easily inserted into the wire supply part 200.

[0033] (Embodiment 3) A wire guide member 120 according to the third embodiment will be described with reference to Fig. 5 to Fig. 7. The configuration of the welding apparatus 1 is the same as that of the first embodiment. The configuration of the wire guide member is different. Fig. 5 is a front view of the wire guide member 120, Fig. 6 is a side view of the wire guide member 120, and Fig. 7 is a longitudinal cross-sectional view of the wire guide member.

[0034] The basic configuration of this wire guide member 120 is similar to that of the wire guide member 110 in the second embodiment described above, but the first side wall S1 and the second side wall S2 have curved shapes. Furthermore, a plurality of guide rollers 124 having a second rotation center axis CL2 extending in the same direction as the first rotation center axis CL1 are arranged on the first side wall S1 and the second side wall S2 along the insertion direction of the wire 2 (the direction of arrow Y in FIG. 7). Note that this embodiment employs a configuration in which the guide rollers 124 are provided on both the first side wall S1 and the second side wall S2, but it is preferable to provide the guide roller 124 on at least one of the first side wall S1 and the second side wall S2.

[0035] As described above, the wire guide member 120 of the present embodiment has a configuration that easily receives the wire 2, similar to the wire guide member 110 of the above-described second embodiment. Furthermore, the first side wall S1 and the second side wall S2 are provided with guide rollers 124 that rotate along the insertion direction of the wire 2, and therefore the wire 2 can be easily fed into the wire supply unit 200 while reducing contact resistance with the wire 2.

[0036] As described above, the wire guide member 120 in this embodiment also reduces the workload on the operator and allows the wire 2 to be easily inserted into the wire supply part 200.

[0037] While the welding torch body has been described above in the embodiments, the embodiments disclosed herein are illustrative in all respects and are not limiting. The scope of the present invention is defined by the claims, and includes all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0038] 1 welding device, 2 wire, 10 wire reel, 11 winding drum, 20 wire reel cover, 30 torch section, 40 nozzle, 60 hopper, 61 hose, 70 carriage section, 71 arm, 100, 110, 120 wire guide member, 101 main body section, 102 upper opening, 103 lower opening, 104 wire guide tube, 124 guide roller, 200 wire supply section, 200h wire insertion port, S1 first side wall, S2 second side wall, CL1 first rotation center axis, CL2 second rotation center axis.

Claims

1. a wire reel on which a wire is wound; a wire supply unit that supplies the wire to a welding target portion; a nozzle extending from the wire supply unit toward a position below the welding target area and guiding the wire supplied from the wire supply unit to the welding target area; Equipped with the wire reel includes a winding drum that winds the wire around a first rotation central shaft, the wire supply unit includes a wire insertion port into which the wire is inserted, a wire guide member that guides a tip of the wire into the wire insertion port is provided at the wire insertion port; The wire guide member a cylindrical body portion; When the main body is viewed from a direction in which the first rotation central axis extends, a distance between a first side wall located closer to the wire reel and a second side wall located farther from the wire reel gradually narrows toward the wire insertion opening; Welding equipment.

2. The main body has a second width along a direction perpendicular to the first rotation central axis that is longer than a first width along the first rotation central axis.

10. The welding device of claim 1.

3. a first inclination angle of the first side wall relative to a perpendicular line extending in the vertical direction is larger than a second inclination angle of the second side wall; 10. The welding device of claim 1.

4. At least one of the first side wall and the second side wall has a plurality of guide rollers each having a second rotation axis extending in the same direction as the first rotation axis are arranged along the wire insertion direction; 10. The welding device of claim 1.

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