JPH06335770A - Simplified automatic welding equipment - Google Patents

Abstract

PURPOSE:To automate the welding work of a short-sized welded joint in the simplified automatic welding equipment. CONSTITUTION:The simplified automatic welding equipment is provided with an equipment main body 2 on which a welding torch 6 is mounted and an attaching and detaching means 3 which fits the equipment main body 2 on members A to be welded, the equipment main body 2 is provided with a rectilinear moving mechanism 7 which moves a slider 11 along a weld line L and a torch position adjusting means 8 which adjusts the position of the welding torch 6 and the attaching and detaching means 3 is provided with a presetter member 4 fitted on the member A to be welded in a separated state from the equipment main body 2 and a clamping means 26 which fits the presetter member 4 on the members A to be welded in a positioning state. A coupling means 28 which couples both in a positioning state is provided between the equipment main body 2 and the presetter member 4, after only the presetter member 4 is fitted on the members A to be welded in a positioning state, the equipment main body 2 is coupled with the presetter member 4 and the welding torch 6 is moved along the weld line L by operation of the rectilinear moving mechanism 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple automatic welding apparatus which is attached to a member to be welded at a welding site and welds the member to be welded.

[0002]

2. Description of the Related Art In a welded structure having a plate-frame structure formed by welding metal plate materials and the like, the welded joints often employ welding methods such as butt welding and fillet welding. This kind of welding method is easy to automate because the welding torch is placed at the welding point to be welded, and once the welding conditions are adjusted, it is only necessary to move the welding torch at a constant speed. It is thought that this can be achieved.

[0003]

However, many welded structures having a plate-frame structure use a large amount of members to be welded, such as standardized section steels.
Welded joints are often short. In such a case, since the welding work is not performed continuously, the ratio of the time required for the preparatory work, that is, the positioning work of the automatic welding device, the welding condition setting work, etc., to the welding time increases, and Is difficult to achieve. In particular, the automatic welding device having a mechanism for linearly moving the welding torch has to be heavy in weight, which requires a great deal of labor for movement and positioning work.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a simple automatic welding apparatus capable of automating the welding work of a short weld joint.

[0005]

In order to achieve the above object, the present invention comprises a device main body on which a welding torch is mounted, and an attaching / detaching means for attaching the device main body to a member to be welded,
The apparatus main body comprises a linear movement mechanism for moving the slider carrying the welding torch along a welding line, and a torch position adjusting means arranged between the slider and the welding torch for adjusting the position of the welding torch. And a detaching means comprising a presetter member attached to the member to be welded in a state of being separated from the apparatus body, and a clamp means for attaching the presetter member to the member to be welded in a positioning state, the presetter member of the apparatus body and the attaching / detaching means. A simple automatic welding device is proposed, in which a connecting means for connecting the two in a positioned state is provided between and.

[0006]

According to the simple automatic welding apparatus of the present invention, the attaching / detaching means is installed by mounting the presetter member on the member to be welded by the clamp means in a positioned state, and the apparatus body is connected to the attaching / detaching means by the connecting means. As a result, the apparatus main body is attached to the member to be welded in a positioned state. In this case, since the positioning work for the member to be welded of the apparatus main body itself, which has a mechanical portion and is heavy, is not performed, the installation work can be easily performed. After that, the torch position adjusting means sets the position of the welding torch, the proximity distance to the welding line, etc., and then the linear movement mechanism is operated to perform automatic welding.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a simple automatic welding apparatus according to the present invention will be described below with reference to FIGS.
In each of these drawings, reference numeral 1 is an automatic welding device (simple automatic welding device), 2 is an apparatus main body, 3 is an attaching / detaching means, 4 is a presetter member, 5 is a base, 6 is a welding torch, 7 is a linear movement mechanism, and 8 Is a torch position adjusting means, 9 is a fitting member, 10
Is a guide rail, 11 is a slider, 12 is a rack gear,
13 is a pinion gear, 14 is a servomotor, 15 is a guide roller, 24 is a clamping means, and 28 is a connecting means.

As shown in FIG. 1, the automatic welding apparatus 1 of this embodiment comprises an apparatus main body 2 which is in a separated state and an attaching / detaching means 3 for attaching the apparatus main body 2 to a member to be welded. The apparatus main body 2 is, for example, a strip plate-shaped base 5 made of an aluminum alloy, a welding torch 6 mounted on the base 5, and a linear movement mechanism for linearly moving the welding torch 6 along the longitudinal direction of the base 5. 7 and torch position adjusting means 8 for adjusting the position of the welding torch 6. L-shaped fitting members 9 are attached to the bottom surface of the base 5 at intervals in the longitudinal direction, so that the apparatus main body 2 can be attached to a presetter member 4 described later in a positioned state. ing.

The welding torch 6 is, for example, a welding torch 6 for MIG welding. In this embodiment, the manual welding torch 6 is diverted, and a welding wire supply means and an inert gas supply means (not shown) are used. It is connected to the.

As shown in FIGS. 1 and 2, the linear moving mechanism 7 has a guide rail 10 arranged along the longitudinal direction of the base 5, a slider 11 attached to the guide rail 10, and one side. On the upper surface of the guide rail 10, a rack gear 12 mounted along the longitudinal direction of the guide rail 10, a pinion gear 13 mounted on a slider 11 and meshed with the rack gear 12, and a servomotor 14 for rotating the pinion gear 13. It is equipped with. The slider 11 includes four guide rollers 15
The guide rail 10 is sandwiched by the
The guide rail 10 cannot be removed from the guide rail 10.
It is mounted so that it can move in a straight line.

As shown in FIG. 4, the torch position adjusting means 8 moves the first block 17 in the spacing direction of the guide rail 10 with respect to the first bracket 16 attached to the slider 11. One shaft 18 and a second shaft 20 for finely moving the second bracket 10 with respect to the first block 17 in a direction orthogonal to the first shaft 18.
And the third shaft 2 for finely moving the second block 21 in the same direction as the first shaft 18 with respect to the second bracket 19.
2 and the fourth shaft 2 for moving the plate 23 largely in the same direction as the third shaft 22 with respect to the second block 21.
4 and has a fitting 25 for attaching the welding torch 6 to the tip of the plate 23. The first shaft 18 is provided with a handle 18b having a screw 18a screwed into the first block 17, and the second shaft 20 and the third shaft 22 are respectively screwed into the first block 17 and the second block 21. The handles 20b and 22b having the screws 20a and 22a to be fitted together, and the fourth shaft 24 are
A screw member 23b arranged in a penetrating state in a long hole 23a provided in the plate 23 and screwed into the second block 21.
Each member can be moved by operating. As a result, the mounting member 25 can be moved with respect to the slider 11 and the tip position of the welding torch 6 can be arranged at an arbitrary position.

The attaching / detaching means 3 comprises a presetter member 4 and a clamp means 26 for attaching the presetter member 4 to a member to be welded. As shown in FIG. 3, the presetter member 4 is a member that is placed in close contact with the member A to be welded and is positioned by the clamp means 26 on the portion A to be welded and held in the attached state. It has become.
Fitting holes 27 into which one end of the fitting member 9 of the base 5 is fitted are arranged in the presetter member 4 at intervals in the longitudinal direction, and the fitting hole 27 and the fitting member 9 are provided.
The presetter member 4 and the apparatus main body 2 are connected to each other in a positioned state by the connecting means 28 constituted by. The presetter member 4 is also made of a light metal such as an aluminum alloy and is lightweight.

The clamp means 26 is arranged on one side in the width direction of the member A to be welded and the presetter member 4 and the member A to be welded A.
And a pressing means 30 arranged on the other side of the welded portion A. The clamper 2
9 is configured by combining a plurality of links 29a, and the presetter member 4 is operated by operating the handle 29b.
And the member to be welded A are sandwiched and locked, and the presetter member 4 can be held in the attached state to the member to be welded A. Clamper 2
A bolt 29c that is advanced and retracted toward the bottom surface of the presetter member 4 is attached to the tip of the presetter member 9, so that the presetter member 4 can be set in accordance with the plate thickness dimension of the welded member A to be attached. Has become.

Further, the pressing means 30 is the presetter member 4
A block 30a attached to the bottom surface of the block and a pressing bolt 30b screwed into a screw hole provided in the block 30a. The pressing bolt 30b is adapted to be advanced and retracted at an angle of 15 to 20 with its tip facing the bottom surface of the presetter member 4. By pressing the end of the member A to be welded with the pressing bolt 30b, the presetter member 4 and the member A to be welded are kept in close contact with each other, and the member A to be welded is sandwiched between the clamper 29 and the welder A. , The presetter member 4 and the member A to be welded can be held so that relative displacement does not occur.

In order to carry out short butt welding, fillet welding, etc. using the automatic welding apparatus 1 constructed as described above, first, the members to be welded A to be joined are tack-welded or optionally. Secure with a clamp member. Next, the clamper 29 is opened and the pressing bolt 3 of the pressing means 30 is opened.
With the 0b retracted, the presetter member 4 is arranged on the surface of one member A to be welded. Then, the presetter member 4 is arranged such that its longitudinal direction is parallel to the welding line L, and the clamper 29 and the pressing bolt 30b are operated to attach the presetter member 4 to the welded member A in a close contact state. As a result, the presetter member 4 is arranged in the welded portion A in a positioned state.

Then, by fitting the fitting member 9 provided on the base 5 of the apparatus main body 2 into the fitting hole 27 of the presetter member 4, the two are connected in a positioned state.
That is, by being positioned on the presetter member 4 positioned along the welding line L, the guide rail 10 provided on the base 5 is positioned along the welding line L. After this, the torch position adjusting means 8
By operating, the tip position of the welding torch 6 is adjusted to a state in which optimum welding conditions can be realized.

In this state, the linear moving mechanism 7 is operated to linearly move the welding torch 6 along the welding line L, and the welding torch 6 is operated during the movement to move the welding line L. The members A to be welded are joined over the entire length.

Therefore, according to the automatic welding apparatus 1 of the present embodiment, only the lightweight presetter member 4 is positioned on the member A to be welded, and the simple connecting means 28 moves the apparatus main body 2 to the presetter member 4. Since they are connected, the positioning work is easy, the burden on the operator can be reduced, and the work man-hours required for the preparatory work before welding can be reduced to achieve the effect of automatic welding. Also,
The welding torch 6 is moved linearly by the linear movement mechanism 7,
Since the welding is performed during the movement, the welding condition can be kept uniform over the entire length of the welding line L, and a good welded joint can be obtained.

The simple automatic welding device 1 of the present invention can employ the following techniques. Although the linear movement mechanism 7 including the rack gear 12 and the pinion gear 13 is used, other arbitrary linear movement mechanism 7 may be used instead. We decided to apply it to MIG welding, but instead of this,
Applicable to any other welding work.

[0020]

As described above in detail, the simple automatic welding apparatus according to the present invention comprises the apparatus main body on which the welding torch is mounted and the attaching / detaching means for attaching the apparatus main body to the member to be welded. Includes a linear movement mechanism for moving the slider along the welding line and a torch position adjusting means for adjusting the position of the welding torch, and the attaching / detaching means is attached to the member to be welded in a state separated from the apparatus main body. When,
Clamping means for mounting the presetter member on the member to be welded in a positioning state is provided, and the connecting means for connecting the presetter member and the presetter member in a positioning state is provided between the main body of the apparatus and the presetter member. By attaching a lightweight presetter member to the member to be welded in a positioned state, the movement path of the welding torch of the apparatus main body connected to the presetter member is determined, so positioning work is easy and the burden on the operator is reduced. be able to. Also, by reducing the number of man-hours required for positioning work,
Even if the welded portion is short, automatic welding can be effectively performed. Since the optimum welding conditions are set by the torch position adjusting means and the welding torch is moved by the linear movement mechanism, the optimum welding conditions can be maintained over the entire length of the welding line and a good welded joint can be obtained.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a simplified automatic welding device according to the present invention.

FIG. 2 is a side view showing the automatic welding device of FIG.

3 is a plan view showing the presetter member of FIG. 1. FIG.

4 is a perspective view showing a torch position adjusting means of FIG. 1. FIG.

[Explanation of symbols]

 A Welded member L Welding line 1 Automatic welding device (simple automatic welding device) 2 Device body 3 Attaching / detaching means 4 Presetter member 6 Welding torch 7 Linear moving mechanism 8 Torch position adjusting means 11 Slider 26 Clamping means 28 Connecting means

Claims (1)

[Claims] 1. A straight line which comprises a device main body on which a welding torch is mounted and attachment / detachment means for attaching the device main body to a member to be welded, wherein the device main body moves a slider on which the welding torch is mounted along a welding line. A moving mechanism, and a torch position adjusting means arranged between the slider and the welding torch for adjusting the position of the welding torch, wherein the attaching / detaching means is a presetter member attached to the member to be welded in a state separated from the apparatus main body; Clamping means for attaching the presetter member to the member to be welded in a positioned state, and connecting means for connecting the presetter member in a positioned state between the apparatus body and the presetter member of the attaching / detaching means. Simple automatic welding equipment characterized by.