JPS6027582Y2 - weaving equipment for welding - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a weaving device for an automatic welding torch, and more particularly to a weaving device that can easily and automatically adjust the weaving width.

In order to butt weld steel materials such as steel materials and steel pipes, the groove surface width must be tack welded to an appropriate size without excess or deficiency, and then the final welding must be performed.

Automatic welding methods such as electrogas arc welding involve a weaving operation, so it is desirable that the groove surface width is always exactly constant. However, the developed surface width tacked on site is often uneven, and It is necessary to weld while adjusting the weaving width each time.

Conventionally, it has been impossible to respond quickly to changes in the groove surface width, resulting in welding defects.

An example of a conventional weaving width adjusting device will be described with reference to FIG.

The torch 1 is held by the torch holder 2, and the torch holder 2
is connected to the connecting culm 3.

As shown in the figure, the torch 1 is weaved by moving the connecting culm 3 left and right.

The weaving width changes depending on the horizontal movement width of the connected culm 3.

The connecting culm 3 is connected to the adjustment box 50 via the pillow ball 4.
It is connected to the piece 51.

The adjustment box 50 is attached to a rotation shaft 61 of an electric motor 60, and is rotated around the rotation shaft 61, that is, the rotation axis C of the adjustment box 50, by driving the electric motor 60.

Inside the adjustment box 50, there is a direction perpendicular to the rotation axis C (a direction parallel to the connecting culm 3).

) is provided with a screw shaft 52 having handles 53 at both ends, and the piece 51 has a female thread and meshes with the screw shaft 52.

Therefore, by manually rotating the handle 53, the piece 5
1 is moved, and therefore the distance between the piece 51 and the rotation axis C of the adjustment box changes.

When the adjustment box 50 is rotated, the piece 51 makes a radial circular movement, which is converted into a left-right movement of the connecting culm 3 by the pillow ball 4, and the torch 1 is weaved.

The weaving width is determined by adjusting the radius of rotation of the piece 51 using the handle 53.

However, it is not easy to catch the handle 53 rotating together with the adjustment box 50 and manually rotate it, and the operation is difficult, so the weaving width cannot be adjusted quickly and accurately.

An object of the present invention is to provide a welding weaving device that can perform weaving width adjustment with good responsiveness in a simple manner.

The welding weaving device according to the present invention converts the circular motion of a piece located off the axis of rotation of an adjustment box rotated by a motor into a left-right motion, transmits this to the torch, and weaves the torch. This device is characterized by having the following configurations (a) to (f).

(a) Mutually insulated first and second energizing collars are integrally attached to the motor shaft via an insulator.

(b) The motor is attached to a power transmission box, and the power transmission box rotatably supports an integral motor shaft-long power-carrying collar via an insulator.

(c) The integral motor shaft and current-carrying collar are insulated and fixed to the adjustment box, with the motor shaft aligned with the rotational axis of the adjustment box.

b) A DC power supply is introduced into the power transmission box which is connected to the two energizing collars by brush connections.

(e) A DC motor for rotating the screw shaft for moving the pieces is attached to the adjustment box, and its terminals are connected to the energizing collar.

(f) The DC motor is rotated forward or backward depending on the width of the groove surface, so that the welding torch weaves.

The main feature of the welding weaving device of the present invention is that a DC motor capable of forward and reverse rotation is attached to the adjustment box, and the screw shaft of the adjustment box, which was conventionally rotated manually by a handle, is rotated by the motor. , and the electric path to the DC motor rotating together with the adjustment box is connected to a current-carrying collar integrated with the output shaft by brush contact from a support means (power transmission box) that rotatably supports the output shaft of the motor that rotates the adjustment box. It is to be connected through the DC motor without interfering with the rotation of the adjustment box and the DC motor itself.

The present invention will be described in detail below based on drawings of embodiments.

2 is a schematic plan view of one embodiment of the device of the present invention, FIG. 3 is a sectional view of the main part, and FIG. 4 is a sectional view taken along the line AA' in FIG. 3.

The connecting culm 3 is connected to the torch 1, the torch holder 2 holding the torch 1, the connecting culm 3 connected to the torch holder 2, and the piece 51 of the adjustment box 50 via the pillow ball 4,
The circular movement of the piece 51 is converted into a left-right movement of the connecting culm 3, and the weaving of the torch is performed by a mechanism similar to that of the conventional method shown in FIG. 1, so a repeated explanation will be omitted.

Furthermore, the female thread of the piece 51 is engaged with the threaded shaft 52,
Similarly, it is moved by the rotation of the screw shaft 52, and the adjustment box 50 is rotated by the motor 60.

In the device of this invention, the adjustment box 5o is equipped with a DC motor (
A deceleration motor 54 is attached, and the screw shaft 52 is rotated by the motor 54.

Further, a first current-carrying collar 63 and a second current-carrying collar 63 and a second current-carrying collar, which are mutually insulated by an insulator 62B, are connected to the motor shaft 61 via an insulator 62A.
A current-carrying collar 64 is attached integrally with the motor shaft 61.

In the illustrated embodiment, the motor shaft 61 has a short length, and the tip of the first energizing collar 63 attached to the motor shaft is shaped like a rod.
This is an example in which this serves as an output shaft.

In addition, the first energizing collar 63 has a joint 63A and a rod-shaped body 63B.
The two are connected by a parallel pin 63C.

Reference numeral 65 denotes a screw that is inserted and tightened with an insulating piece in order to fix the first energizing collar 63 to the motor shaft 61.

70 is a power transmission box, and the motor 60 is the power transmission box 70.
It is attached to.

The power transmission hook 7° connects to the integrated motor shaft 61 via an insulator.
and energizing collars 63 and 64 are rotatably supported.

That is, an insulator 62C and a bearing receiver 66 are fitted into the integral body of the motor shaft 61 and the current-carrying collars 63 and 64, and the integral body is rotatably connected to the power transmission box 70 via the bearing 67 at the bearing receiver 66. It is supported.

The motor shaft 61 and the current-carrying collars 63 and 64 are integrated at the tip of the bearing holder 66 and are connected to the holder 55 of the adjustment box 50.
It is bolted and fixed.

When attaching the motor shaft 61 and the energizing collars 63 and 64 to the adjustment box 50 as a single unit, the motor shaft 61 is attached to the adjustment box 5.
It is made to coincide with the rotation axis C of 0.

As described above, the first energizing collar 63 and the second energizing collar 63
The energizing collar 64 is completely insulated from each other and from the outside, and rotates together with the adjustment box 50 having the motor shaft 61 and the DC motor 54.

The external DC power source is connected to a terminal plate 71 of the power transmission box 70, and from the terminal plate 71 to brushes 72, 73 which are slid into pressure contact with the respective energizing collars 63, 64.

Each energizing collar 63, 64 is also connected to the DC motor 54 terminal by conductive wires 56A, 56B.

Since the device according to the present invention is constructed as described above, the adjustment hook 5 is driven by the motor 60 as in the prior art.
Due to the circular movement of the piece 51, the connecting frame 3 is moved left and right, the torch 1 is weaved, and the DC current in the desired direction is applied to the terminal plate 71 of the power transmission box 70 in response to changes in the groove surface width. This is smoothly transmitted to the DC motor 54 of the adjustment box 50, which drives the motor to adjust the rotation radius of the piece 51 to obtain a desired weaving width.

Therefore, it is possible to eliminate the difficulty of manually adjusting the weaving width by catching the rotating handle together with the adjustment box as in the past, and the weaving width can be easily adjusted, which significantly improves work efficiency and helps improve quality. .

Furthermore, by using a conventional groove sensor to control the current of the DC motor for moving the pieces, it is easy to fully automate welding, and the effect is great.

Note that the adjustment box must have a window so that the pieces connected to the connection frame can be moved.

However, there is a risk that dust such as spatter may enter through the window and adhere to the screw shaft, impeding smooth movement of the piece, so special consideration has been taken in the illustrated embodiment.

That is, the adjustment box 50 has double lids 57 and 58.

Lids 57 and 58 are shown in plan and side views, respectively, in FIGS. 5 and 6.

The lid 57 has a long hole 57A through which the neck of the piece 51 can freely slide, and is fixed to the adjustment box 50 with a flat bolt 57B.

The lid 58 has a hole 58A in the center through which the piece 51 passes, and elongated holes 58B, 58B, which are tapered on both sides and whose upper surfaces are widened.

The lid 58 is placed on the lid 57 with the piece 51 passing through the hole 58A, and is attached with a flat bolt (not shown).

) in the holes 57C and 5 of the lid 57 through the long holes 58B and 58B.
Screw it onto 7C.

To tighten this flat bolt, the oblique neck of the flat bolt has a long hole 58B.
, 58B so as to be able to slide along the inclined parts.

This makes it possible to almost prevent dust from entering the adjustment box.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of an example of a conventional welding weaving device, FIG. 2 is a schematic plan view of an example of the device of the present invention,
Figure 3 is a sectional view of the main part, Figure 4 is a sectional view taken along the line A-A' in Figure 3, and Figures 5 and 6 are a plan view and a side view of the two lids of the adjustment box. be. In the drawings, 1 is a torch, 2 is a torch holder, 3 is a connecting frame, 4 is a pillow pole, 50 is an i-alignment box, 51 is a piece, 52 is a screw shaft, 54 is a DC motor, 60 is a motor,
61 is the motor shaft, 62A, 62B, 62C are insulators, 6
3.64 is a current-carrying collar, 67 is a bearing, 70 is a power transmission box, 71 is a terminal board, and 72.73 is a brush.

Claims (1)

[Scope of Claim for Utility Model Registration] In a welding device for welding that converts the circular motion of a piece located off the axis of rotation of an adjustment box rotated by a motor into a left-right motion, transmits this to a torch, and performs weaving of the torch. (a) first and second energizing collars that are mutually insulated are integrally attached to the motor shaft via an insulator, and (b) the motor is attached to a power transmission box, and the power transmission box is attached to the edge of the motor shaft. (c) The integrated motor shaft and current-carrying collar are insulated by the adjustment box, and the motor shaft is aligned with the rotational axis of the adjustment box. (d) The power transmission box is equipped with a DC power supply connected to the two energizing collars through brush connections, and (e) The adjustment box is equipped with a DC motor to rotate the screw shaft for moving the pieces. A welding device for welding, the terminal of which is connected to a current-carrying collar, and (f) a DC motor is rotated forward or backward depending on the width of the developed surface so that the welding torch weaves.