JPH09108840A - Welding wire reel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a welding wire reel to be mounted on a movable welding head capable of smoothly feeding the wire and achieving the excellent welding by preventing the wire from being loosened. SOLUTION: A protective cover made of transparent or translucent resin in which a welding wire reel 1 around which a welding wire 4 is wound can be stored and which has cylindrical shape is provided. In the protective cover, an upper lid 12 and a body 13 surround the welding wire reel 1 and a wire opening part 19 feeding the welding wire 4 and arranged on the side of the body 13, and a pressing plate 15 at a different position from that of the wire opening part 19, a pressing plate cover 14, a coil spring 17, and a pressing plate holding lid 16 are provided to press the welding wire 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding wire reel used in welding, and more particularly to a welding wire reel mounted on a movable welding head.

[0002]

2. Description of the Related Art Welding wire reels generally used for welding often do not have an enclosure for the reel, but may have a special enclosure. For example, JP-A-4-253570 discloses an automatic welding apparatus in which a reel is surrounded by a cylindrical side wall. It is presumed that the side wall is designed to reduce the occupied space by improving the aesthetic viewpoint by integrating the reel with the arm structure. It does not describe the phenomenon of wire loosening or the material of the protective cover.

Further, a welding wire reel covered with a protective cover was applied to "Hyundai Welding Technology Series 6 Melt Welding Equipment Chapter 5 Section 5.4.4 All Position Welding Equipment 201-206P" of the Welding Complete Book Editing Committee. It describes the installed welding equipment (Issued by: Industry Bulletin January 23, 1980). The features and application examples of each commercially available welding equipment are introduced here. The welding wire reel and its protective cover are not specifically described. Moreover, no special mechanism for preventing the wires from coming apart is recognized.

[0004]

A commonly used welding wire, for example, a solid wire is wound around a large reel of 10 to 20 kg and cannot be attached to a small welding head such as an all-position welding robot. . When the wire is wound on a small reel of 1 to 2 kg, the phenomenon of separation occurs. In particular, stainless steel has high rigidity and remarkable dispersal, and if the wires disengage, they will come off the reel, or the wires will be entangled with each other, making the wire feeding unstable and finally unable to feed it. There is. As one example of measures against this problem, there is a case where a stranded wire formed by braiding fine wires having low rigidity is used. However, this stranded wire has the drawback of being extremely expensive compared to conventional solid wires.

On the other hand, the automatic welding apparatus disclosed in Japanese Unexamined Patent Publication No. 4-253570 is provided with a cover for enclosing the welding wire reel, but the problem of the welding wire coming apart or coming off from the wire reel is completely described. Not not. In addition, since the welding wire reel is large enough to be mounted on a stationary welding robot, it is difficult from the viewpoint of weight and size to directly apply this wire reel to a small moving welding head. .

An object of the present invention is to provide a welding wire reel capable of preventing the wires from coming loose and improving the feeding of the wires.

[0007]

In order to achieve the above-mentioned object, the present invention is capable of accommodating a wire reel on which a welding wire is wound, in a welding wire reel mounted on a portable welding head. A protective cover having a size and a cylindrical shape is provided, and an opening through which a welding wire is fed and a pressing mechanism for pressing the wire at a position different from the opening are provided on a side surface of the protective cover. . The material of the protective cover is transparent or translucent resin.

By disposing a cylindrical protective cover capable of accommodating the welding wire reel and by providing a pressing mechanism for pressing the wire on the side surface of the protective cover, it is possible to prevent the wires from coming loose. In addition, since the side surface is made of a transparent or semi-transparent resin, whether the winding state of the wire in the wire reel or the entangled state can be easily seen. Furthermore, by providing a wire opening at a position different from the pressing mechanism,
Smooth wire feeding. Of course, by enclosing the reel with a protective cover, it is possible to prevent dust and dirt from entering.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The contents of the present invention will be described below with reference to embodiments. FIG. 1 shows an explanatory view of an automatic welding apparatus of the present invention, in which a rail 8 installed on a welding work 7 of a fixed pipe, a welding control head 5 traveling on the rail 8, and a welding control head thereof. The welding control device 9 controls the driving of the welding power source 5 and the output of the welding power source 10, and the operation pendant 11 controls the operation of the welding head 5 via the welding control device 9. The welding control head 5 includes a welding torch 6 for performing a welding operation, a welding wire reel 1 around which a welding wire 4 is wound, and a wire feeding device 2 for feeding the welding wire 4 to the tip of the welding torch 6. Further, the welding wire 4 is fed from the welding wire reel 1 through the wire guide cable 3 to the tip of the welding torch 6 by the wire feeding device 2. In this automatic welding device, the welding head 5 travels on the rail 8 to perform circumferential welding of a fixed pipe.

The welding wire reel of the present invention will be described with reference to FIGS. 2 to 7. FIG. 2 shows an exploded perspective view of the welding wire reel of the present invention. 3 and 4 are a top view and a side view when the welding wire reel is assembled. To explain the configuration, the welding wire reel 1 is surrounded by the protective cover main body 13 and the protective cover upper lid 12, and a wire opening 19 for feeding the welding wire 4 to the side surface of the protective cover main body 13 and a position different from the opening 19. The pressing plate 15 for pressing the welding wire 4 is provided on the above. Here, the pressing plate 15 includes a pressing plate cover 14 that surrounds the pressing plate 15, a coil spring 17 that serves as power for pressing the pressing plate 15, and the coil spring 1 thereof.
The pressing plate pressing lid 16 receives the force of 7. When actually setting the welding wire reel, the pressing plate cover 14 is attached to the welding wire protection cover body 13 in advance, the welding wire reel 1 is set from there, and the coil spring 17 is inserted in the pressing plate 15. Then, insert it into the pressing plate cover 14 and cover with the pressing plate pressing lid 16. Rotation adjustment screw 1
Opening the welding wire 4 while adjusting 8
Pull out from 9 to the specified length. Finally, the lid 12 for the welding wire protective cover is simply covered from above.

Here, if the inner diameter of the side surface of the protective cover body 13 is too smaller than the outer diameter of the welding wire reel 1, the welding wire reel 1 cannot be accommodated. There is a risk of protruding. Therefore, the proper inner diameter D of the side surface of the protective cover body 13
Is the outer diameter of the welding wire reel, and the welding wire diameter is dw.
Then, it is desirable to set the range to satisfy the formula 1.

[0012]

## EQU00001 ## (Dr + dw / 4) .ltoreq.D.ltoreq. (Dr + 4dw) (Equation 1) As shown in FIGS. 3 and 4, when the welding wire 4 is pulled by the drive rotation of the wire feeding device 2, its tension is increased. The welding wire 4 is sent out from the wire opening while the welding wire reel 1 rotates clockwise. The protective cover body 13 is fixed to the welding control head 5. It is the rotation adjusting screw 18 that adjusts the movement in the rotation direction at this time. Since the frictional resistance in the rotation direction can be changed by adjusting the tightening degree of the screw, the movement of the welding wire reel 1 is adjusted. it can. Also,
The pressing plate 15 provided on the side surface of the protective cover body 13 is
The welding wire 4 is generated by the force of the coil spring 17 contained therein.
Since it is pressed against, the wires can be prevented from loosening and entanglement. The pressing force at this position may be at least smaller than the wire pulling force of the wire feeding device 2 and may be larger than the reaction force of the wire which is trying to spread in the outer diameter direction of the wire reel, and the welding wire reel 1 The frictional resistance in the direction of rotation must be less than the wire pulling force.

FIGS. 5 and 6 show the opening of the protective cover of the welding wire reel of the present invention, and are a top view and a side view, respectively. Here, from FIG. 5, the wire opening width L is about 45 from the position perpendicular to the wire feeding direction.
The wire guide cable 3 is located not only at the center 3b but also at the upper 3a and the lower 3c as shown in FIG. However, since the wire opening 19 of the protective cover does not interfere with the welding wire 4, the wire feeding is not hindered. Therefore, the welding wire 4 sent out from the wire opening 19 is guided to the tip of the predetermined welding torch 6 via the inside of the wire guide cable 3, so that welding can be favorably continued.

FIGS. 7 (a) and 7 (b) show the movement of the pressing plate 15 when the welding wire 4 is reduced by using the welding wire reel of the present invention. Assuming that the state of (a) before use is changed to the state of (b) after being used for welding, when the welding wire 4 is reduced by a certain length b, the pressing plate 15 is always pressed while pressing the welding wire 4. Also moves only b. That is, since the coil spring 17 in the pressing plate 15 extends as the welding wire 4 decreases, the pressing plate 15 also moves accordingly, and the welding wire 4
By constantly pressing, the welding wire 4 can be prevented from coming loose, smooth wire feeding can be ensured, and welding quality can be improved.

Here, the pressing plate 15 is connected to the welding wire 4
Although the coil spring 17 is used to press the plate against, it may be pressed by other means or other methods. Also, the number of pressing plates 15 may be increased.

[0016]

As described above, according to the present invention, the cylindrical protective cover capable of accommodating the welding wire reel is provided, and the pressing mechanism for pressing the wire is provided on the side surface of the protective cover. It is possible to stabilize and improve welding quality. In addition, the side of the protective cover is made of transparent or translucent resin, so you can see at a glance how much wire is decreasing in the wire reel and whether kinking has occurred, and you can prevent problems related to wire feeding. . Further, the wire opening is provided at a position different from that of the pressing mechanism, so that the wire can be fed without applying excessive force to the wire. As a matter of course, by enclosing the wire reel with the protective cover, it is possible to prevent dust and dust from adhering to the wire and prevent welding defects from occurring.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a welding device according to the present invention.

FIG. 2 is an explanatory view of the assembly of the welding wire reel of the present invention.

FIG. 3 is a side view of the welding wire reel of the present invention.

FIG. 4 is an exploded perspective view of the welding wire reel of the present invention.

FIG. 5 is a top view showing the opening of the welding wire reel of the present invention.

FIG. 6 is a side view showing the opening of the welding wire reel of the present invention.

FIG. 7 is a side view showing the movement of the pressing plate and the spring before and after using the wire of the welding wire reel of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Welding wire reel, 4 ... Welding wire, 12 ... Protective cover upper lid, 13 ... Protective cover main body, 14 ... Pressing plate cover, 15 ... Pressing plate, 16 ... Pressing plate pressing lid,
17 ... Coil spring.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuaki Haneda 502 Jinritsu-cho, Tsuchiura-shi, Ibaraki Hiritsu Seisakusho Co., Ltd. (72) Inventor Nobuo Shibata 502 Jinritsu-cho, Tsuchiura-shi, Ibaraki Hiritsu Seisakusho Co., Ltd. Inside the Mechanical Research Laboratory (72) Inventor Yoshio Nakajima 502 Jinritsu-cho, Tsuchiura-shi, Ibaraki Hiritsu Seisakusho Co., Ltd. (72) Inventor Hironari Kikuchi 502 Jinrachi-cho, Tsuchiura-shi, Ibaraki Hi-Ritsu Seisakusho Co., Ltd. 72) Inventor, Koichiro Furusawa, 502 Jinritsucho, Tsuchiura, Ibaraki Prefecture

Claims (2)

[Claims] Claim: What is claimed is: 1. A welding wire reel mounted on a transportable welding head, wherein a protection cover having a cylindrical shape and a size capable of accommodating the wire reel around which the welding wire is wound is provided, and a side surface of the protection cover. A welding wire reel, wherein the welding wire reel is provided with an opening through which the welding wire is sent out and a pressing mechanism for pressing the welding wire at a position different from the opening. 2. The welding wire reel according to claim 1, wherein a material of a side surface of the protective cover is made of a transparent or translucent resin.