JPS60247472A - Automatic arc welding equipment - Google Patents

Abstract

PURPOSE:To obtain a good bead in accordance with numerous welding postures by fitting two magnets on the bottom face of the main body of a welder and by travlling the main body of a welder with applying a magnetic force to the travelling surface of the material to be welded. CONSTITUTION:At least two magnets 23, 24 are fitted to the back surface of the main body of welder, which is travelled by driving travelling wheels 21, 22 with applying a magnetic force by the magnets 23, 24 thereof under the condition that the prescribed intervals remain for the surface of the material to be welded of a horizontal member 1. The welder is travelled with the tip part thereof pointing always in the direction of a welding line 3 by inclining the direction of three travelling wheels so as to point to the direction of the welding line 3, and a wire 5 is welded always in a proper position.

Description

[Detailed Description of the Invention] <Object of the Invention> The present invention relates to an automatic arc welding device, and more specifically, it is very easy to adapt to many welding positions, and in particular, it is possible to adapt to many welding positions when the angle of the vertical plate changes during fillet welding. The present invention relates to an automatic arc welding device that can perform good welding even when it is used, and can stably obtain a good build.

Although the apparatus of the present invention will be described below with a focus on carbon dioxide arc welding, it can be applied to any case where arc welding is performed by moving the welding machine main body along a welding line.

Generally, among arc welding methods, blown acid gas arc welding is a consumable electrode welding method that uses inexpensive carbon dioxide gas as a shielding gas and melts and welds a core wire that is continuously fed in this carbon dioxide atmosphere. Because of this, its popularity has been remarkable in recent years. Automation is being promoted using this welding method in terms of labor saving, but there is still no automatic welding machine that is easy to use and functional, and there is a strong need for development in this area. Although automatic welding machines for this type of welding method have been proposed and implemented in the past, the standard is that none of them satisfy both portability and functionality. In other words, a device that integrates the oscillation Ia411I, which rives the welding toe, into a main body such as a carriage that runs along the welding line, weighs 17 to 18 lag/unit, and the device size is also large (4J), so the functionality is satisfactory. However, it is less portable.

In addition, miniaturized devices do not have an oscillation mechanism, which limits their range of use from a functional standpoint. Furthermore, even if the equipment is downsized, the cabtire cables and conduit cables attached to the VZaW welding torch must be pulled, so if one truck is made lighter, the pulling force will be reduced, so the weight of the equipment will be reduced. Due to restrictions on weight reduction, even without the oscillation mechanism, the weight is over 10 kg/unit.

In view of this situation, the present invention provides an automatic welding machine that has the same performance as conventional functional devices, has a weight of less than 90%, is small in size, and has portability. It's true.

The present invention aims to solve the above-mentioned drawbacks. Specifically, the present invention aims to solve the above-mentioned drawbacks. We propose an apparatus that performs arc welding by driving the running wheels and moving the welding machine body while applying magnetic force to the running surface of the material.

<Structure of the Invention> The device of the present invention is guided by at least one set of guide rollers on one side of the welding machine main body, drives at least two running wheels on the bottom surface, and is mounted on the welding machine main body. Welding: In an automatic arc welding device that performs arc welding by ~--, at least two magnets 1- are attached to the bottom of the welding machine body with a predetermined gap from the surface of the material to be welded, and It is characterized by welding by moving the welding machine body while applying magnetic force to the welding machine.

Therefore, this configuration and its effects will be explained in more detail with reference to the drawings.

Note that Fig. 1 is an explanatory view of an example of horizontal fill welding using the apparatus of the present invention, Fig. 2 is a side view taken from the 8-direction in Fig. 1, and Fig. FIG. 4 is a perspective view of an example of an automatic welding machine used in the present invention, and FIG. 4 is a bottom view of the welding machine main body of the automatic welding machine.

First, in FIG. 1 and FIG.
is indicated by a dotted line. Also, among these materials to be welded 1.2, material to be welded 1 is placed horizontally as a horizontal member, and material to be welded 2 is placed horizontally as a horizontal member.
are placed vertically as 11 materials, these welded materials 1.2 are joined on each side, and a horizontal fillet weld line 3 is formed between them, and this weld I! A welding torch 4 advances along line 3, carbon dioxide gas is ejected from the tip of the torch 4, and a welding wire 5 is continuously fed to perform arc welding.

In Fig. 3, the welds 1 and 4 are turned by the adjustment knob 8 in the B-8 direction, moved by the adjustment knob 9 in the J:C-G direction, and moved in the low 0 direction by the adjustment knob 1o. has been done. These adjustment knobs 8.9.10 therefore allow the welding torch 4 to be adjusted to match the target position of the welding wire 5. Further, these adjustment mechanisms are attached to an adjustment arm 11, and one end of the adjustment arm 11 is connected to a pivot point 1.
It is configured so that it can be rotated between F and E in the second position.

The pivot point 12 is fixed to the variable angle plate 13, and in particular, the fixed position of the pivot point 12 can be adjusted along the guide groove 13a of the variable angle plate 13. In addition, the adjustment arm 11
The other end is connected to the oscillation mechanism 14, and the rotation shaft 14a of the oscillation mechanism 140 is connected to the oscillation mechanism 140 as described below.
This rotation causes the adjustment arm 11 to pivot between E and E around the pivot point 12 at one end, and this pivot causes the welding torch 4 to pivot between 11 and 8.
A predetermined riving movement is supported in the welds 1-4.

As described above, the oscillation i mechanism 4 for riving the welds 1 to 1 is attached to the welding machine main body, and the motor 15 is mounted on the welding machine main body, and the rotating shaft 14a is rotationally driven by the motor 15. In addition to the driving motor 15, a traveling motor 17 is mounted on the base 1G of the welding machine main body. Guide rollers 18, 19 are provided on one side of the base 16, and during welding, these guide rollers 18, 19 run in contact with the material to be welded 2,
Furthermore, below the base 16 is an oscillation 14flll14.
is installed. Further, as shown in FIG. 4, there are running wheels 20.
21.22 is attached, and when the running motor 17 is driven, the running wheel 20.21.22 rotates, and during welding, the welding machine main body is run by the running wheel 20.21.22,
Automatically arc welded.

Next, in the welding machine having the following second configuration, as shown in FIG. For example, the running wheels 20, 21, and 22 are driven while applying a magnetic force to the surface of the cross member to be welded 1 with a predetermined gap left between them (see FIG. 2). (Run the welding machine.

When operating the welding machine automatically during welding, it is necessary to always position it at the appropriate position relative to the welding line.
This position is maintained by guide rollers 18 and 19. The two magnets 23 and 24 are designed to reduce the weight of the device (one of the purposes is to reduce the gravitational force of the magnets, and their magnetic force compensates for the small size of the mouth, but they are not very magnetic). The two magnets are moved in the welding direction (mold direction) by the cab tire etc.
When a reaction occurs at right angles to or at a certain angle, the cart rotates in the horizontal direction, causing it to deviate from the weld line. For this reason, two magnets were placed to suppress this rotation.

From this point of view, in the arrangement of the present invention, the two magnets 23 and 24 act on the surface of the material to be welded 1 with a gap remaining between them to cause the material to travel. At this time, the 7-gun I. is placed on the 1-- side of the welding machine. l'', from the center to the rear (preferably to act. For this reason, the magnet 23 is installed in the center along the direction of movement of the welding machine and horizontally, and the magnet 24 is installed in the rear along the IJ direction of the welding machine. Attach t.Pull up the installation.If you run the magnetic saw from the center and rear except for the 1 and 2 parts, the two magnets will come off due to spatter from the welds 1 to 2 located at the toe parts. It has the advantage of not being contaminated.If the three running wheels 20, 21, and 22 are tilted so that they point in the direction of the weld line 3 (see Figure 1), the tips always point in the direction of the weld line 3. While the welding machine is running, the welding wire 5 (see Fig. 1 and Fig. 2) can always be welded at the proper target position.Furthermore, the magnet 23 in the center is surrounded by three running wheels 20, 21, 22. Similarly, it is preferable to surround the rear magnet 24 with rollers 25.26.In this case, both [l-ra 25.26]
6 is configured so that it can rotate without necessarily being used as a drive shaft, and it is preferable that its direction be oriented in the direction of the weld line, similarly to the running wheels 20, 21, and 22. Furthermore, the spacing between the two magnets can be adjusted by 127 (not shown in FIG. 3).

In addition, when welding by running the welding machine while holding the proper position by magnetic force, in addition to running the welding machine over the horizontal workpiece 1 and performing horizontal welding as described above, the welding machine shown in Figs. 5 and 6 Good and smooth welding can also be achieved in the cases shown in the figures and in Fig. 7.

In other words, Fig. 5 shows the case where the material to be welded 1 is the ceiling surface, and even in this case, the weld line 3 is welded smoothly because the holding force due to magnetic force acts on the surface of the material to be welded 1. can. Furthermore, Fig. 6 shows the case where a holding force due to magnetic force is applied to the surface of the welded material 2 as a vertical member, and Fig. 7 shows the case where the welded material 2 as a longitudinal member is applied, unlike the case in Fig. 2. This is a case where the angle of is changed, and in this case as well, smooth welding can be achieved by exerting a magnetic holding force on the surface of the horizontal workpiece 10. 6th
As shown in Fig. 7, if the vertical members are the running surfaces, the horizontal members (
Compared to the case where the lower plate is used as the running surface, the frequency of troubles such as spatter generated during welding adhering to the running surface and the running roller riding on the spatter can be significantly reduced, making the welding work even smoother. It has the advantage of improving.

In an embodiment of the automatic arc welding device of the present invention, two welding machines having a suction force of 80 kg (l) are attached to the bottom of the welding machine body, which is small and lightweight and has a wheel load of 8.5 kq and incorporates an oscillation mechanism for riving the welding torch. In several cases, the permanent magnets were arranged as described above (see Fig. 4), with a gap of 0.3 mm from the surface of the workpiece to be welded.
There was no influence from the conduit cable, and welding could be performed accurately following the self-welding line.

In addition, the magnetic adsorption force is approximately 30 kg with a gap of O and J mm.
It is. Further, although a permanent magnet was used as the magnet, an electromagnetic magnet may be used.

<Effects of the Invention> As explained in detail above, the device of the present invention guides one side of the welding machine body via the guide roller and moves the material to be welded using at least two magnets while being slightly spaced from the bottom surface. This is an automatic arc welding device that performs arc welding by moving the welding machine by acting on the surface and driving the running wheels on the bottom. Therefore, the welding machine can perform riving welding by keeping the welding wire in the proper position without using any guide track, and can smoothly pull down cab tires, etc., improving work efficiency. A small welding machine can be used to cut small pumice C.

In addition, since the holding of the welding machine depends on magnetic force, it can accommodate many welding positions such as downward, horizontal J-fill and vertical, even if the angle of the vertical plate of the J-fill is changed. Using the vertical plate as a running surface, the bogie can run smoothly and weld without being affected by spatter.

[Brief explanation of the drawing]

Fig. tjR1 is an explanatory diagram of an example of horizontal fillet welding using the method of the present invention, Fig. 2 is a side view taken from the arrow A-Yari direction in Fig. 1, and Fig. 3 is an illustration of the method of the present invention in practice. FIG. 4 is a bottom view of the welding machine main body of the welding machine, and FIGS. 5, 6, and 7 are second views of each embodiment of the method of the present invention. FIG. 4 is a side view taken from the same direction as the figure. Codes 1, 2... Material to be welded 3... Welding line 4... Torch 5... Welding wire 1
4...A oscillation control mechanism 15...7 to 16 for oscillation...
・・Base 17・・・・Running data 18.19・
...Guide roller 20.21.22 ...Travelling wheel 23.24 ...Magnet 27 ... Knob for adjusting spacing Patent applicant Kawasaki Steel Co., Ltd. Company Mitsubishi Manufacturing Co., Ltd. Agent Patent Attorney Yoshikatsu Matsushita Lawyer Fumi Soe Shima w2 Figure 113 Figure Ia @ 4 Figure 1F5 Figure 6 Figure 1 continued 0 Inventor Kaname Nishio @ Inventor Masaru Meiki Gobe, 1 Niihama-cho, Chiba City, Kawasaki Steel Co., Ltd. Welding rod and iron powder factory

Claims (1)

[Claims] In an automatic arc welding device that performs arc welding with a welding torch attached to the welding machine main body, the welding machine main body is guided by at least one set of guide rollers on one side of the welding machine main body, and is moved by driving at least two running widths on the bottom surface, and performs arc welding with a welding torch attached to the welding machine main body. Attach two magnets to the bottom of the welding machine body with a predetermined gap from the surface of the material to be welded, and run the welding machine body while applying magnetic force to the running surface of the material to be welded. An automatic arc welding device that performs welding.