JPS5868478A - Bevel copying device for welding equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] In particular, the welding wire outlet can be moved along the welding line formed along the longitudinal direction in the central part of the groove, and proper automatic tracing welding can be performed. The present invention relates to a groove tracing device for a welding device that can carry out the following.

A submerged arc welding device is known as an automatic welding device. As shown in FIGS. 1 and 2, this welding device has a carriage 2 that is self-propelled along a track 1. A torch 5 is provided. A welding wire 7 is supplied to this torch 5 from a wire reel 6 also provided on the carriage 2, and this wire 7 is supplied to the torch 5.
The material is sequentially led out into the bevel groove 4 from an outlet 8 formed at the tip thereof and is melted by an arc. 9
is a hopper containing sandy flux covering the arc, 10
is the control device. Therefore, if the track 1 is arranged along the welding line 11 formed along the longitudinal direction within the groove 4, the torch 5 can be moved along the welding line 11.

However, in conventional welding equipment, although the position of the torch 5 can be adjusted, it is fixedly attached to the carriage 2, so that due to an error in the placement of the track 1, etc. The problem was that it could come off the top, making it difficult to weld accurately.

Therefore, the present invention has been devised in order to eliminate such drawbacks, and is a welding device that can move the torch accurately along the welding line and perform proper automatic tracing welding. The object of the present invention is to provide a copying device.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 3 showing the first embodiment, reference numeral 12 denotes a vertical support shaft which is attached to the mounting portion 13 of the carriage 2 as shown in FIG. A base end portion of a support arm 14 extending in the horizontal direction is rotatably supported on the support shaft 12 via a bearing 15 . A bearing portion 16 is provided at the free end of the support arm 14.
is provided in the shape of a vertical shaft, and an upper end 17a of a wire guide shaft 17 is rotatably supported by this bearing portion 16. A wire guide shaft 17 rotatably suspended from the bearing portion 16
has a guide hole 19 penetrating in the axial direction so as to guide the welding wire 7 to a welding wire outlet 18 to be described later,
Its upper end 17. serves as a welding wire inlet 20. A torch member 21 is provided at the lower end 17b of the seven-wire guide shaft 17. This torch member 21
As shown in FIGS. 4 and 5, the shape enters the bevel groove 4 formed between the base materials 3 and 3 that are butted against each other, and is movable along the longitudinal direction of the bevel groove 4. It has become.

In particular, the torch member 21 has a welding wire outlet 18 formed at the center of the tip, and which outlet 18) the bevel groove 4.
The vehicle has guide portions 22 and 23 extending along the longitudinal direction in the running direction and the reverse direction. The welding wire outlet 18 communicates with the guide hole 19 of the wire guide shaft 17, and the welding wire 11 is formed along the longitudinal direction of the welding wire 7 in the center of the groove 4, which is sequentially supplied. It is designed so that it can be drawn out sequentially downward.

On the other hand, the running direction guide part 22 of the torch member 21 is brought into contact with one side wall surface 4a of the bevel groove 4 as shown in FIG. 4, and the backward direction guide part 23 is brought into contact with the opposite side wall surface 4b. Torch biasing means 24 is provided on the bearing portion 16 of the support arm 14 as a means for biasing the torch.

This torch biasing means 24 is composed of a spiral spring 25, and one end thereof is connected to the bearing portion 1 of the support arm 14 as shown in FIG.
6, and the other end is fixed to the upper end 17.6 of the wire guide shaft 17.
wire guide shaft 1 due to elastic restoring force.
The torch member 21 is configured to be biased by applying a rotational force to the torch member 7 as described above. Note that the torch biasing means may not only be a spiral spring but also any other device having elastic restoring force. Therefore, the torch member 21 is always in the state shown in FIG. 4, that is, in a state where the running direction guide part 22 is in contact with one side wall surface 4a of the groove 4, and the backward direction guide part 23f is in contact with the other side wall surface. Since the welding wire outlet 18 is formed at the center of the torch member 21, the welding wire outlet 18 is always moved along the groove 4b.
In other words, it moves along the welding line 11 accurately.

In addition, each guide portion 22.23 has a groove side wall surface 4a,
In order to facilitate the movement on 4b, sliding members 26, 27 are provided, and in this embodiment, these sliding members 26, 27 are constituted by abacus-shaped wheels made of electrically insulating material.

On the other hand, a power supply inlet 28 connected to a power source is provided at the lower end of the support shaft 12, and the power supply inlet 28 and the wire guide shaft 17 are connected by a flexible conductive member 29. Note that 30 in FIG. 3 is a guide provided to guide the welding wire 7 led out from the wire reel to the welding wire introduction port 20 of the wire guide shaft 17.

Next, the operation of the present invention configured as described above will be described.

First, the torch member 2 is attached to the mounting portion 13 of the carriage 2.
The support shaft 12 is positioned so that the support shaft 1 is located within the groove 4. In this case, the support arm 14 is made to face the opposite side to the direction of movement of the carriage 2, so that the torch member 21 is pulled.

Note that the trajectory 1 of the carriage 2 is arranged in advance along the welding line. Then, when the arc reservoir is powered on and the carriage 2 is run, the torch member 21 is urged to rotate by the spiral spring 25, so the running direction guide part 22 is attached to one side wall surface 4a of the bevel groove. , and moves along the groove 4 with the backward guide portion 23 in contact with the other side wall surface 4b of the groove. In this case, since the side walls 4a and 4b of the groove 40 are parallel, the welding wire outlet 18 formed in the center of the torch member 21 is always located in the center of the groove 4. Therefore, even if the groove 4 is undulating or curved, the pivoting action of the support arm 14 allows the welding wire outlet 18 to be accurately guided along the welding line 11 in the center of the groove 4. can be moved to Thereby, the welding wire T can be sequentially and accurately supplied onto the welding line 11 from the welding wire outlet 18 of the torch member 21, and proper automatic tracing welding can be performed.

FIG. 7 shows a second embodiment of the present invention, and this embodiment shows a so-called tandem type welding device that can perform arc welding while simultaneously leading out two welding wires. That is, a mounting frame 31 is rotatably supported on the bearing portion 16 of the support arm 14, and wire guide pieces 32 and 33 are attached to the mounting frame 31 in a parallel hanging state and the distance between them can be adjusted. ing. Welding wire outlet ports 18', 1 are provided at the lower ends of the wire guide pieces 32 and 33.
8'.

are formed close to each other, and these outlet ports 18'.

18' Guiding parts 22', 23 are provided in the parts further apart from each other.
' is formed as a conceptual torch member 21'.
It consists of And the guide section 22'.

Spherical bodies serving as sliding members 26' and 27' are rotatably fitted into 23'. Wire guide piece 3
2.33 has a welding wire inlet 20' at the upper end,
20', and these inlets 20's.

20', outlet 18', 18', melt guide hole 1
9'r.

It is connected through 19'2. In addition, the wire guide piece 32
．． 33 are connected to conductive members 29' and 29't, respectively. Note that the bearing portion 16 of the support arm 14 is provided with torch biasing means (not shown) similar to the first embodiment. According to this embodiment, the torch member 21 is brought into contact with the running direction guide part 22' and the reverse direction guide part 23' with the one side wall surface 4a of the bevel groove 4 and the opposite side wall surface 4b, respectively. By moving ' along the groove groove 4, proper arc welding can be performed while simultaneously leading out two welding wires along the welding line 11 in the center of the groove groove 4. Welding work can be made more efficient. Note that the sliding members 26' and 27' may be fixed bodies instead of being rotatable.

In summary, the present invention exhibits the following excellent effects.

(1) The torch for leading out the welding wire can be accurately moved along the welding line, and proper automatic tracing welding can be carried out without unevenness.

(2) It can be used in existing welding machines and is highly versatile.

[Brief explanation of drawings]

Fig. 1 is a side view showing the entire submerged arc welding device, Fig. 2 is a view taken along the line ■-■ in Fig. 1, and Fig. 3 is a partially sectional side view of essential parts showing the first embodiment of the present invention. , Figure 4 is Figure 3 I
FIG. 5 is an enlarged cross-sectional view taken along the line V-IV, FIG. 6 is an enlarged cross-sectional view taken along the line V-V of FIG.
The figure is a side view of a main part, partially in section, showing a second embodiment of the present invention. In the figure, 3 is the base metal, 4 is the groove, 11 is the weld line, 18.1
8', 18' are welding wire outlet ports, 21.21'
22 and 22' are the torch members, 22 and 22' are the running direction guide parts, and 23
, 23' is a backward guide section, 24 is a torch biasing means,
26, 27, 26', 27' are sliding members. Patent Applicant Ishikawajima Harima Heavy Industries Co., Ltd. Representative Patent Attorney Nobuo Kinutani Figure 1 I Figure 2 1F Figure 3

Claims (1)

[Claims] In a welding device that welds by running a torch along a welding line in a groove formed between base materials, a welding wire outlet inserted into the groove and formed at the center of the tip; a torch member having a guide portion extending from the outlet in the running direction and the backward direction along the longitudinal direction of the groove; and the running direction guide portion on one side wall surface of the groove;
a torch biasing means that brings the backward direction guide portion into contact with the side wall surface on the opposite side thereof and exposes the welding wire outlet to the welding line at the center of the groove; 1. A groove tracing device for a welding apparatus, comprising: a sliding member that slides on a side wall surface of a groove.