JP5142005B2 - Electric welding machine torch - Google Patents

Description

According to the present invention, in an electric welding operation having an electrode rod, the welding current can be easily adjusted at a small operating angle with a hand holding the welding torch while monitoring the melting state of the welding beat during the welding operation. Electric welding machine torch that adjusts.

The following patent documents exist as this type of electric welding machine torch.
That is, as shown in the perspective view of FIG. 1, a current adjuster b is provided on the side near the tip of the cylindrical handshake i of the torch, and the current adjusting rotation operation disc C is rotated by the fingertip. .
Thus, the cylindrical handshake is rotated in a line connecting the front end and the rear end, that is, in parallel with the so-called longitudinal direction (front-rear direction).
However, when the rotating operation disc C is actually rotated with the fingertip, the thumb must press the torch switch, so it must be rotated with the other fingertip. It is impossible to rotate the rotating operation disc C with the fingertip while the switch is pressed, and the welding operation is interrupted. Of course, it is also possible to position the current regulator B on the opposite side, that is, on the palm side, but this cannot be touched with the fingertips. It will be rotated.
Since the interruption of the welding operation results in an increase in the seam of the welding beat, a welding defect such as a pinhole is likely to be caused as a defect in the seam of the welding beat.
Furthermore, since the rotary operation disc C is directly attached to the rotary variable resistor inside the current regulator B, the operation angle is about one rotation. Therefore, the finger for operating the rotary operation disc C needs to reciprocate many times in the longitudinal direction.
Registered Utility Model No. 3030953

The present invention uses a welding torch having an electrode rod to hold a welding torch by rotating a rotating operation disk with another finger while pressing a torch switch with a finger holding the welding torch in an electric welding operation. A torch for an electric welding machine that can perform welding current adjustment with a few fingers without interrupting the welding operation with the finger of the hand that has been done.

An electric welding torch according to the present invention made to solve the above-mentioned problems forms a torch head having an electrode rod, a cylindrical handshake equipped with the torch head at the tip, and an outer peripheral surface of the cylindrical handshake. A current regulator provided on the lower side of the cylindrical surface; a torch switch provided on the upper side opposite to the lower side of the cylindrical surface forming the outer peripheral surface of the cylindrical handshake; A rotation operation disk interposed between the cylindrical handshake and the torch head and rotatable in a direction perpendicular to a line connecting the front end and the rear end of the cylindrical handshake; and an outer diameter of the rotation operation disk A rotor that has a smaller diameter and is positioned on the outer periphery of the rotary operation disk and is connected to the current adjuster, to which the rotation of the rotary operation disk is transmitted, and a current adjustment drawn from the rear end of the cylindrical handshake Lead wire and torch switch lead wire An electric welding torch provided, wherein a portion to be pressed with a finger of the torch switch is disposed immediately above the rotating operation disc, and the rotating operation disc is pressed with a forefinger while pressing the torch switch with a thumb. The torch switch and the rotation operation disc are arranged so that they can be operated in both the rotating manner and the manner in which the rotation finger is rotated with the middle finger while pressing the torch switch with the index finger. (Claim 1).
In the above invention, the rotation of the rotation operation disk may be transmitted to the rotor via a belt hung on the outer peripheral surface of the rotation operation disk.
In the above invention, the belt may be provided with a pinch belt guide for preventing the belt from falling off.

(1) According to claim 1, a welding torch is provided by providing a rotating operation disk that rotates in a direction orthogonal to a line connecting the front end and the rear end of the cylindrical handshake between the torch head and the cylindrical handshake. While holding the torch switch with the finger holding the hand, the rotation operation disk can be operated with another finger. In addition, since the part to be pressed with the finger of the torch switch is arranged immediately above the rotation operation disk, the rotation operation disk is rotated with the index finger while pressing the torch switch, and the torch switch is pressed with the index finger. On the other hand, it can be operated in both ways of holding the rotating operation disk with the middle finger.
In addition, a rotor smaller than the rotation operation disk that follows the rotation operation disk is connected to the rotation shaft of the current regulator and arranged on the outer periphery of the rotation operation disk, so that the rotation shaft of the current regulator is directly rotated. Thus, the rotation angle of the rotating operation disk becomes small, and the welding current can be adjusted from the weakest to the strongest without interrupting the welding operation.
(2) According to the second aspect, since the rotation of the rotating operation disk is transmitted to the rotor via the belt, foreign matter is not caught in the gear and the operation failure does not occur.
(3) According to the third aspect, since the belt is equipped with pinching belt guides for preventing the belt from falling off on both sides , the belt can be prevented from falling off.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings showing embodiments.

As shown in FIG. 2, it is a perspective view of the electric welder torch in use, in which a torch head 3 is provided at the tip 2a of a cylindrical handshake 2 provided with a current regulator 1, and a power cable 4 is provided at the rear end thereof. Connected. Thus, the torch head 3 is provided with an electrode rod 6 that can adjust its length depending on wear by tightening or loosening the torch cap 5, and a nozzle 7 is attached to the outside thereof.
In addition, a torch switch 8 is provided near the end of the cylindrical handshake 2a, the lead wire 1a of the current regulator 1 and the lead wire 8a of the torch switch 8 are pulled out from the rear end 2b of the cylindrical handshake, and the power cable 4 and the lead wire. A cable cover 9 is tightened and connected to the rear end 2b of the cylindrical handshake to converge and protect 1a and the lead wire 8a.
Further, a rotating operation disk 10 is rotatably interposed between the cylindrical handshake tip 2a and the torch head 3.
Specifically, it rotates in the direction Y perpendicular to the line XX connecting the cylindrical handshake tip 2a and the rear end 2b,
Further, the rotor 11 connected to the current regulator 1 transmits the rotation of the rotational manipulation disk 10 to the current regulator 1 in accordance with the rotation of the rotational manipulation disk 10.
FIG. 3 is a cross-sectional view of a torch for an electric welding machine as shown in FIG. 3, by fastening a torch cap 5 to a torch head 3, pressing a collet 12 into which an electrode rod 6 is inserted against an inclined portion, fixing the electrode rod 6, and A collet body 13 for mounting the nozzle 7 on the head 3 is screwed into the torch head.
The cylindrical handshake tip 2a is provided with a rotating sliding metal 14 for positioning and reducing frictional resistance during rotation at the inner diameter portion of the rotating operation disk 10 interposed between the torch head 3 and the current regulator 1 A rotary variable resistor 15 is built inside, and a rotor 9 is connected to the rotary shaft 16 to transmit the rotation of the rotary operation disk 10.

As shown in FIG. 5, the torch head 3 is removed, and a perspective view of a part using the rotary operation disk 10 and the rotor 11 as a gear, and a line XX connecting the front end 2a and the rear end 2b of the cylindrical handshake 2 On the other hand, the rotating operation disk 10 rotates in the orthogonal direction Y, and the rotor 11 connected to the current adjuster 1 following the rotation transmits the rotation of the rotating operation disk 10 to the current adjuster 1. .

FIG. 6 is a perspective view of a portion where the torch head 3 is removed and the rotation of the rotary operation disk 10 is transmitted to the rotor 11 via the belt 17, and includes a front end 2a and a rear end 2b of the cylindrical handshake 2. The rotating operation disk 10 rotates in the direction Y orthogonal to the line XX connecting the two, and the rotation of the rotating operation disk 10 is rotated to the rotor 11 connected to the current regulator 1 via the belt 17. The belt guide 18 is provided with the rotation operation disk 10 sandwiched between the rotation operation disk 10 and the rotation of the rotation operation disk 10 to prevent the belt 17 from falling off.

A perspective view of a conventional torch for an electric welding machine The perspective view which shows the use condition of the torch for this invention electric welding machines Cross-sectional view of the above Expanded sectional view Cross-sectional view of the enlarged main part Cross-sectional view of an enlarged main part showing a different embodiment Cross-sectional view of the above Expanded sectional view Perspective view showing the state of use Same as above

Explanation of symbols

1 Current regulator
1a current regulator lead wire
2 Tubular handshake
2a Cylindrical handshake tip
2b Rear end of cylindrical handshake
3 Torch head
6 Electrode rod
10 rotation operation disk
11 rotor
X Line connecting the tip of the cylindrical handshake and the rear end of the cylindrical handshake
Y Rotation direction of rotating disc

Claims (3)

A torch head having an electrode rod; a cylindrical handshake equipped with the torch head at a tip ; a current regulator provided on a lower side of a cylindrical surface forming an outer peripheral surface of the cylindrical handshake; and the cylindrical handshake A torch switch that is provided on the upper side opposite to the lower side of the cylindrical surface forming the outer peripheral surface of the cylinder , is interposed between the cylindrical handshake and the torch head, and is a cylindrical handshake A rotating operation disk that is rotatable in a direction orthogonal to a line connecting the leading end and the rear end of the rotating operation disk, and having a smaller diameter than the outer diameter of the rotating operation disk and positioned on the outer periphery of the rotating operation disk. A torch for electric welding comprising a rotor connected to a machine, to which rotation of the rotary operation disk is transmitted, a lead wire of a current regulator drawn out from a rear end of the cylindrical handshake and a lead wire of a torch switch There,
The part to be pressed with the finger of the torch switch is arranged immediately above the rotating operation disk,
It is possible to operate in both ways: holding the torch switch with your thumb while rotating the rotating disc with your index finger, and pressing the torch switch with your index finger and rotating the rotating disc with your middle finger. A torch for electric welding comprising a torch switch and a rotating operation disk. The electric welding torch according to claim 1, wherein the rotation of the rotating operation disk is transmitted to the rotor via a belt hung on an outer peripheral surface of the rotating operation disk. The electric welding torch according to claim 2, wherein the belt is equipped with pinching belt guides on both sides to prevent the belt from falling off.

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