JPH06106350A - Positioning device for automatic welding machine - Google Patents

Abstract

PURPOSE:To position workpieces in all directions for the welding machine by moving a weld line in the vertical direction and the second direction to orthogonally cross this to position the workpieces and moving the workpieces by a positioning mechanism in the third direction. CONSTITUTION:The workpieces W are placed on rollers 23 of a welding table 17, a motor 31 for a moving body is driven by an operation button, the moving body 19 is moved to the left to move the workpieces W to the left along with the moving body 19, a welding torch 9 is positioned in the X-axis direction, an elevating table 3 is lowered, a torch mount 7 is moved in the Y-axis direction and the welding torch 9 is positioned for the workpieces W. When the weld line of the workpieces W is long, this weld line is coincident with the X-axis direction and placed on the rollers 23, the moving body 19 is moved to move the workpieces W to the left along with the moving body 19 and the welding torch 9 is positioned in the X-axis direction, by which desired welding is made possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning device of an automatic welding machine for moving and positioning a workpiece with respect to a welding machine.

[0002]

2. Description of the Related Art Generally, in an automatic welding machine, the welding machine is moved to position the workpiece, and in the manual welding, the welding machine is moved while holding it by hand. It is positioned.

[0003]

However, when the welding line of the work piece is long, the moving distance of the welding machine becomes long and the welding machine itself becomes large in size in order to perform this by automatic welding. .

On the other hand, when the welding operation is performed manually, the welding condition is kept proper during the welding work of a long welding line, such as keeping the welding line straight and keeping the welding speed constant. It's not easy.

The object of the present invention was proposed in view of the above problems of the prior art, and it is not necessary to use a large welding machine itself, and a workpiece can be positioned with respect to the welding machine. To provide a positioning device for the automatic welding machine.

[0006]

In order to solve the above-mentioned problems, the present invention is directed to a welding machine formed so as to be movable in the vertical direction and a second direction perpendicular to the vertical direction so as to be positioned.
It is characterized in that a positioning mechanism for moving and positioning the workpiece in a third direction substantially orthogonal to the second direction is provided.

The positioning mechanism includes a welding table on which a work piece is placed, a moving body that abuts the work piece on the welding table to move the work piece, and moves the moving body in a third direction. And a moving body moving mechanism.

[0008]

With respect to the vertical direction and the second direction orthogonal to this, the welding machine is moved and positioned with respect to the workpiece,
With respect to the direction of, the workpiece is positioned in all directions with respect to the welding machine by moving the workpiece by the positioning mechanism. When the welding line of the work piece is long, by using this positioning mechanism, the movement distance of the welding machine itself does not become long, and the welding machine itself can be kept small.

The positioning mechanism includes a welding table on which the work piece is placed, a moving body that abuts the work piece on the welding table to move the work piece, and the moving body is moved in the third direction. Since it is configured with the moving body moving mechanism, for example, a positioning mechanism may be added to the automatic welding machine,
It has a simple structure.

[0010]

Embodiments of the present invention will be described in detail below with reference to the drawings. The automatic welding machine illustrated in the perspective view of FIG.
The vertically movable table 3 and the rails 5 are installed on the vertically installed column 1.
Is provided so as to be movable in the vertical direction (Z-axis direction) by being guided by, and the lifting table lifting mechanism (not shown) can move the lifting table 3 in the vertical direction for positioning.
The torch mount 7 is movably engaged with the lifting table 3 in the front-rear direction (Y-axis direction) which is the second direction orthogonal to the vertical direction, and the torch mount 7 is moved by the torch mount moving mechanism (not shown). 3 is moved and positioned in the Y-axis direction, and a welding torch 9 is attached to the torch attachment base 7.

The welding machine control unit 1 controls the vertical movement of the lifting table 3, the positioning operation, the Y-axis movement of the torch mount 7, the positioning operation, the welding operation of the welding torch 9, and the like.
The welding machine control device 11 is operated by depressing a foot-operated operation switch 13, for example.

The elevating table elevating mechanism and the torch mount moving mechanism described above rotate, for example, a ball screw, a nut member screwed to the ball screw and fixed to the elevating table 3 and the torch mount 7, and the ball screw. A known structure including a driving motor can be used. A well-known welding torch 9 is also used.

A positioning mechanism 15 is provided on the side of the column 1 for moving and positioning the workpiece W in the left-right direction (X-axis direction) which is a third direction orthogonal to the Y-axis direction. The illustrated positioning mechanism 15 is disposed below the welding torch 9 and has a long welding table 17 in the X-axis direction, and a moving body (X-axis positioning stopper) that abuts the workpiece W on the welding table 17. 19 and a moving body moving mechanism 21 that moves the moving body 19 in the X-axis direction.

On the upper part of the welding table 17, a large number of rollers 23 having a rotation axis orthogonal to the X-axis direction are arranged in the X-axis direction, and a movable body guide rail 25 long in the X-axis direction.
However, the movable body 19 is engaged with the movable body guide rail 25 upward in the vicinity of the roller 23 so as to be movable in the X-axis direction.

In the illustrated moving body moving mechanism 21, the axis is X-axis.
A ball screw 27 axially supported on the welding table 17 so as to be in the axial direction, a nut member 29 screwed onto the ball screw 27 and fixed to the welding table 17, and a ball screw 2
A motor 31 for a moving body attached to the welding table 17 for driving the rotating body 7, a moving body control device 33 for controlling the rotation of the moving body motor 31, and an operation box for operating the moving body control device 33. And 35.

With the above-described structure of the positioning mechanism 15, when the moving body motor 31 is driven, the ball screw 27 rotates and the ball screw 27 and the nut member 29 screwed to this.
The moving body 19 moves in the X-axis direction along the moving body guide rail 25. The workpiece W placed on the roller 23 of the welding table 17 is moved to the left in FIG.
When 9 moves, it is pushed to the left by the left end of the moving body 19 and moves leftward on the roller 23 together with the moving body 19, and is positioned in the X-axis direction with respect to the welding torch 9.

Next, the operation of the above embodiment will be described. For the welding operation, the workpiece W is placed on the roller 23 of the welding table 17.
1 and operates the operation button of the operation box 35 to drive the moving body motor 31 to move the moving body 19 to the left in FIG. 1 to move the workpiece W together with the moving body 19 to the left. ,
While positioning the welding torch 9 in the X-axis direction,
Depress the operation switch 13 to operate the lifting table 3
And the torch mount 7 is moved in the Y-axis direction to position the welding torch 9 with respect to the workpiece W.

When the welding line of the workpiece W is long, the welding line is aligned with the X-axis direction and placed on the roller 23, and the movable body 19 is moved to move the workpiece W together with the movable body 19 to the left. By moving and positioning the welding torch 9 in the X-axis direction, desired welding can be performed.
As described above, by using the positioning mechanism 15 even when the welding line of the workpiece W is long, it is not necessary to form a long moving distance of the welding machine itself, and the welding machine remains small. Good.

That is, the Z-axis and Y-axis welding processes are performed by moving the welding machine, and the X-axis welding processes are performed by moving the workpiece W. Further, the Z-axis welding process is performed by moving the axis of the welding machine, and the X-axis welding process is performed by moving the workpiece W.

The positioning mechanism 15 has a welding table 17 on which the workpiece W is placed, a movable body 19 which moves by contacting the workpiece W on the welding table 17, and the movable body 19.
Is constituted by a simple structure such as a moving body moving mechanism 21 that moves in the X-axis direction, and the above-mentioned function can be obtained by adding the positioning mechanism 15 to an automatic welding machine.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes. For example, the moving body moving mechanism extends in the X-axis direction and locks the moving body on a cord-like body such as a chain or a belt, and the cord-like body is sprocket wheel,
The structure may be such that it moves in the X-axis direction by a pulley and a motor.

[0022]

As described above, according to the present invention, the welding machine is moved and positioned with respect to the workpiece in the vertical direction and the second direction orthogonal thereto, and in the third direction, By moving the work piece with the positioning mechanism, the work piece is positioned in all directions with respect to the welder, and this positioning mechanism is used even when the welding line of the work piece is long. By doing so, it is not necessary for the welding machine itself to be formed with a long moving distance, and the welding machine may remain small.

The positioning mechanism includes a welding table on which the work piece is placed, a moving body that moves the work piece by contacting the work piece on the welding table, and the moving body is moved in the third direction. Since it is configured by the moving body moving mechanism, it has a simple structure. For example, by adding this positioning mechanism to the automatic welding machine, a desired function can be obtained at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

[Explanation of symbols]

 15 Positioning mechanism 17 Welding table 19 Moving body 21 Moving body moving mechanism W Workpiece

Claims (2)

[Claims] 1. A welding machine formed so as to be movable in the vertical direction and a second direction orthogonal to the vertical direction so as to be positioned, and a workpiece to be processed in a third direction substantially orthogonal to the second direction. A positioning device for an automatic welding machine, comprising a positioning mechanism capable of moving and positioning. 2. The positioning mechanism comprises: a welding table on which a workpiece is placed; a movable body that abuts the workpiece on the welding table to move the workpiece; and the moving body in a third direction. The positioning device in an automatic welding machine according to claim 1, wherein the positioning device comprises a moving body moving mechanism that moves.