JPH0810985A - Device for setting backing material in one side welding - Google Patents

Abstract

PURPOSE:To surely and automatically abut a backing material on the rear of the weld zone of an object to be welded by setting the backing material in a supporting body and extending a cylinder device to the weld zone. CONSTITUTION:A backing material 2 is set on a supporting body 9 with the supporting body 9 retained horizontally. A first positioning device 16 is expanded/contracted up and down and left and right; the tip end of the first positioning device 16 is engaged with a weld zone la on an object 1 to be welded; and a setting is made so that the center of the body 4 (backing material 2) of a setting device is positioned in the lower part of the weld zone 1a by driving a guide roller 5. The setting device body 4 is fixed on a rail R by extending a fixing means downward. A reference mark is detected by moving a position detector, and the backing material 2 is accurately positioned in the lower part of the welding zone 1a by driving a moving device 22. A first cylinder device 6 is extended upward, and the backing material 2 is abutted on the rear of the weld zone 1a and bent. An obliquely inclined second cylinder device 13 is extended, and the backing material 2 is pressurized along the curvature of the weld zone 1a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backing material installation device for installing a backing material on a workpiece during single-sided welding.

[0002]

2. Description of the Related Art Generally, when one-sided welding of objects to be welded (for example, a curved outer plate in a ship), it is necessary to install a backing material on the back side of the welded parts of the objects to be welded.

When the backing material is installed, the worker enters below the object to be welded carried on a work table (also referred to as a surface plate), the worker takes an upward posture, and is fixed to the welding portion. It is fixed with a tool.

[0004]

The lower side of the object to be welded is narrow and the environment is bad. When an operator enters such a place,
Installing the backing material in an unreasonable upward position is a difficult task, and it is difficult to work, especially when the work piece is curved, resulting in reduced work efficiency, which in turn reduces the number of welding operations. Will increase.

Therefore, an object of the present invention is to provide a backing material installation device for single-sided welding that can solve the above problems.

[0006]

Means for solving the problems in the present invention are as follows:
A backing material installation device for installing a backing material on the back side of an object to be welded, wherein the installation device body is installed on a rail arranged below the object to be welded in a direction perpendicular to the welding direction of the object to be welded. A cylinder device, which is movably provided and arranged side by side in the welding direction on the installation device body, and which expands and contracts toward the welded part of the workpiece, is provided for mounting the backing material on each cylinder device. The support body is hung, and the support body is bendable by connecting a plurality of support members with a pin member along the welded portion.

[0007]

In the above means for solving the above problems, each cylinder device is contracted, the backing material is installed on the support in this state, and the installation device body is appropriately moved on the rail so that the installation device body is welded. Installed so that it is located below the welded part of the cylinder, extend each cylinder device upwards, and bring the backing material closer to the welded part, each support member will be pinned even if the work piece is curved. Since it is configured to be bendable by being connected by members, the support body is bent along the welded portion of the workpiece, and the backing material is placed in contact with the curved back surface of the welded portion. be able to.

[0008]

EXAMPLES Examples of the backing material installation device of the present invention will be described below.
Description will be made based on the overall configuration diagram of FIG. 1, the side view of FIG. 2, and a partially enlarged view of the operating state of FIG.

The backing material installation device according to the embodiment of the present invention abuts the backing material 2 on the back side of the object to be welded 1 when the object 1 to be welded such as a curved outer plate of a ship is welded on one side. It is intended for installation.

Welding of the object 1 to be welded is carried out on a base 3 which is arranged below the object 1 to be welded and has a vertically expandable pillar P for supporting the object 1 to be welded on the back surface. A pair of rails R are provided in a direction perpendicular to the direction Y1, and an installation apparatus body 4 having a length substantially the same as the welded portion 1a of the workpiece 1 is provided with a guide roller 5 rolling on the rails R. On the rail R.

Further, the welding portion 1 of the object to be welded 1 is arranged on the installation device body 4 side by side in the welding direction Y1.
A plurality of first cylinder devices (for example, hydraulic cylinder devices are used) 6 that can be expanded and contracted in the vertical direction toward a are provided (seven in the figure), and the base end portion of each first cylinder device 6 is not shown. It is rotatably attached to the installation device body 4 via a support shaft, and a bracket 8 is swingably attached to the tip end portion of each of the first cylinder devices 6 via a support shaft 7, and the upper surface of the bracket 8 is attached. A support body 9 having a U-shaped cross section for mounting the backing material 2 is hung on the support body 9, and the support body 9 supports a plurality of supports so as to follow the shape of the welded portion 1a of the workpiece 1. It is configured to be bendable by connecting the members 10 with pin members 11.

In addition, in the vicinity of each first cylinder device 6 of the first cylinder device 6 except the central first cylinder device 6a, a second cylinder device 13 inclined toward the central first cylinder device 6a is arranged side by side. And each of the second cylinder devices 13 is similar to the first cylinder device 6,
A base end portion is rotatably supported by the installation device body 4 via a support shaft, and a pressing piece 14 for pressing the support body 9 in a direction corresponding to the shape of the welded portion 1a is supported at the tip end portion. It is rotatably attached to the shaft 15.

A pair of rod-shaped L-shaped first positioning devices 16 for substantially positioning the mounting device body 4 below the welding portion 1a are provided on both sides of the mounting device body 4, and the first positioning device is provided. A base end 16 of the base 16 is rotatably attached to the installation apparatus body 4 and is expandable and contractible in the vertical direction Y2 and the horizontal direction Y3. The one to be fitted first.

After positioning the installation device body 4,
A second positioning device 17 is provided for accurately positioning the backing material 2 on the welded portion 1a by moving the first cylinder device 6 and the second cylinder device 13.

The second positioning device 17 is mounted on the bracket 8 of each first cylinder device 6 except the first cylinder devices 6b and 6c at both ends of the first cylinder device 6 in the front-rear direction Y5 via the guide rod 18. A position detector 20 that is provided movably and that detects the position of a reference mark 19 provided in the vicinity of the welded portion 1a, and a signal provided from each position detector 20 that is provided in the installation device body 4 Each movable table 21 to which the first cylinder device 6 is attached
And a moving device 22 for moving the vehicle in the front-back direction Y5.

The moving device 22 has a guide shaft 23 having a shaft center in the front-rear direction Y5, an annular body 24 slidably fitted on the guide shaft 23 and having the moving base 21 attached thereto, and the annular body. It is composed of a driving means (not shown) for moving the 24 in the front-back direction Y5.

The bottom surface of the installation device body 4 is provided with fixing means 25 for expanding and contracting in the vertical direction to fix the installation device body 4 on the rail R. In the above structure, as shown in FIG. 1, first, the first cylinder device 6 and the second cylinder device 13 are contracted to leave the support body 9 in a horizontal posture, and the support body 9 is backed in this state. Install material 2.

Next, the columns P provided on the base 3 are expanded and contracted so as to receive the object 1 to be welded, and the first positioning device 1
6 is expanded and contracted in the up-down direction Y2 and the left-right direction Y3, the tip of the first positioning device 16 is locked to the welded part 1a on the workpiece 1, and the guide roller 5 is driven on the rail R to install the installation device main body. 4 is appropriately moved so that the center of the installation apparatus body 4 (backing material 2) is positioned substantially below the welded portion 1a.

In this way, the installation device main body 4 is almost welded to the welded portion 1.
After being positioned below a, the fixing means 25 is extended downward to fix the installation device body 4 on the rail R. Next, the position detector 20 is moved in the front-rear direction Y5 by the guide rod 18 to detect the position of the reference mark 19. Since the distance from the reference mark 19 to the weld 1a is set in advance, the horizontal distance from the position detector 20 to the center of the backing material 2, that is, the distance from the position detector 20 to the first cylinder device 6 is set. The moving base 21 is moved by driving each moving device 22 so that the distance from the reference mark 19 to the welded portion 1a becomes equal, and the backing material 2 is accurately positioned below the welded portion 1a.

The first cylinder devices 6b and 6c at the ends are also provided.
Although the moving device 22 is not provided at the end, the first cylinder devices 6b and 6c at the ends are near the first positioning device 16, and the end of the backing material 2 is accurately welded by the first positioning device 16. It can be located below 1a.

After this, each first cylinder device 6 is extended upward to bring the backing material 2 close to the welded portion 1a. Even when the end portion of the object to be welded 1 is curved upward as shown in FIG.
Since the first cylinder device 6 closer to the end has a larger extension amount, the support body 9 bends along the welded portion 1a of the workpiece 1, The backing material 2 comes into contact with the back surface of the welded portion 1a and bends.

In this way, the backing material 2 is welded to the welded portion 1a.
When the second cylinder device 13 is extended by abutting from the back side, the pressing piece 14 presses the back surface of the support 9 upward while sliding slightly on the central cylinder device 6a side.
Since the second cylinder device 13 is inclined toward the central first cylinder device 6a side, the backing material 2 is pressed toward the central first cylinder device 6a side along the curvature of the welded portion 1a, and the backing material 2 is pressed. The material 2 can be reliably along the welded portion 1a.

As described above, the backing material 2 is welded to the welded portion 1a.
After the welding work is performed from one side of the welded portion 1a, and the welding work at one place is completed, the first cylinder device 6 and the second cylinder device 13 are contracted and returned to their original postures. The first positioning device 16 is removed from the welding portion 1a, the guide roller 5 is driven, the installation device body 4 is moved on the rail R, the backing material 2 is installed from above the support body 9, and another object to be welded. 1 is supported by the support P of the base 3, and the backing material 2 is brought into contact with the welded portion 1a in the same manner as described above. Also in this case, the operator installs the backing material 2 on the support body 9 in a downward posture.

As described above, according to the embodiment of the present invention, the backing member 2 is accurately positioned by the position detector 20,
By extending the first cylinder device 6 and the second cylinder device 13, the backing material 2 can be surely brought into contact with the back side of the welded portion 1a, so that the worker does not need to put it on the lower side of the work piece as in the conventional case. It is possible to omit the work of going in and fixing the backing material 2 to the welded part with the fixing jig at the welding position by the operator, and the worker places the backing material 2 on the support body 9 in the downward position. The backing material 2 is automatically brought into contact with the back side of the welded portion 1a after that, so that labor saving for installing the backing material 2 can be realized and workability is improved. Therefore, the number of welding operations can be reduced.

In the above embodiment, an example in which only one backing material installation device is provided is shown, but the invention is not limited to this. The backing material 2 is installed on the support 9 of the backing material installation device, and the backing material 2 is brought into contact with the welded portion 1a in each backing material installation device in the same manner as in the above-described embodiment, so that the backing material 2 is placed at a plurality of positions. It can be applied to the object to be welded 1 having the welded portion 1a.

Further, by constructing the apparatus so that it can be pulled out in the welding direction Y1, after the welding work of the welding portion 1a at one place is completed, the apparatus is pulled out and the backing material is placed on the support body 9. 2 is installed and returned to the welded part 1a at another location, and the backing material 2 is attached to the welded part 1 in the same manner as in the above embodiment.
By contacting the back side of a, it is possible to correspond to the work piece 1 having a plurality of welded portions 1a.

[0027]

As is apparent from the above description, according to the present invention, the backing material is installed on the support and the cylinder device is extended to reliably and automatically weld the backing material to the welded part of the workpiece. Since it can contact the back side of the work piece, the worker does not have to enter the lower side of the work piece and take an upward posture to fix the backing material to the welding part using a fixing jig as in the past. Therefore, labor saving for installing the backing material can be realized, workability can be improved, and thus the number of welding operations can be reduced.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a backing material installation device showing an embodiment of the present invention.

FIG. 2 is an enlarged side view of the same.

FIG. 3 is a partially enlarged view of the state where the backing material is brought into contact with the back side of the welded portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Welding object 1a Welding part 2 Backing material 4 Installation device main body 6 First cylinder device 6a First cylinder device 7 Spindle 8 Bracket 9 Support 13 Second cylinder device 16 First positioning device 17 Second positioning device 20 Position Detector 21 Moving stand 22 Moving device R rail

Claims (1)

[Claims] 1. A backing material installation device for installing a backing material on a workpiece during single-sided welding of the workpiece, the direction being perpendicular to the welding direction of the workpiece below the workpiece. The installation device main body is movably provided on the rail arranged in the above, and a cylinder device that is arranged side by side in the welding direction on the installation device main body and expands and contracts toward the welded part of the workpiece is provided. A supporting body for mounting the backing material is hung on the device, and the supporting body is made bendable by connecting a plurality of supporting members with a pin member along the welded portion. A backing material installation device for single-sided welding.