JPH0244936Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention relates to an automatic pipe welding machine head, in which an electrode torch equipped with an electrode needle is moved according to the thickness of the welding pipe to be welded by the welding machine. This is an improved device for welding and adjusting welded pipes, and as a result, it has a field of application that allows for easy and accurate welding operations on welded pipes.

(Prior Art) On the upper surface of a pipe holder main body 1, which has a first circular hole 2 with a first pipe insertion opening 3 opened on one side,
The second pipe insertion opening 7 of the second circular hole 8 is connected to the first pipe insertion opening 7.
The small gear 15 matches the pipe insertion port 3 of the
In an automatic pipe welding machine head equipped with a similar ring-shaped welding torch support plate 6 which is rotationally driven by a welding torch and rotates once, the electrode torch having an electrode needle is moved and adjusted according to the thickness of the welding pipe. There is.
However, conventionally, a long hole in the adjustment direction is provided on the welding torch support plate side, a through hole is provided on the electrode torch side, and a threaded rod is passed through the long hole and the through hole and fixed by tightening a nut. In order to do this, the nut must be loosened and moved, and then the nut must be tightened again, so the final fine adjustment is not easy, and furthermore, the adjustment operation is not easy.

(Problems to be solved by the invention) Conventional automatic pipe welding machine heads have the disadvantage of taking time and effort to adjust the movement of the welding torch, as mentioned above, so adjustments are often made, but this method eliminates the troublesome adjustment. Therefore, for example, when indoor piping has thick and thin pipes, a group of pipes of one thickness is welded to weld the joints, and after that is finished, a group of pipes of a different thickness is welded. In many cases, welding may be performed out of order and welding may be forgotten, so it is necessary to make it possible to easily adjust the movement of the electrode torch. The problem of the present invention is to develop an automatic pipe welding machine head equipped with an electrode moving device that allows easy torch movement.

(Means for Solving the Problems) The purpose of the present invention is to solve the problems mentioned in the previous section. A guide piece 21 provided with a square-shaped sliding guide groove 24 oriented toward is attached, and a threaded hole 23 is provided in the constituent piece 22 on one side of the sliding guide groove 24 formed by the guide piece 21. A sliding piece 28 that fits into the sliding guide groove 24 is provided on the electrode torch 25 having the electrode needle 26 pointing toward the center, and a set screw 30 is screwed into the sliding piece into the screw threading hole 23. Retaining groove 2 where the tip of
9 is provided.

(Function) In the present invention, the tip of the set screw 30 is loosened to the extent that it does not escape from the set groove 29, and the sliding piece 28 of the welding torch 25 is free to move within the sliding guide groove 24, and the center of the second groove 8 is always centered. Move the sliding piece 28 to a position where the electrode needle 26, which is directed at Fix the piece 28 and welding torch 25.

(Effects) The present invention has a sliding piece 28 provided on the welding torch 25 equipped with the electrode needle 26 that always points toward the center of the second circular hole 8, and a guide piece 21 provided on the welding torch support plate 6.
By fitting into the sliding guide groove 24 of the electrode needle 26, the electrode needle 26 can be moved very accurately and easily without disturbing the above-mentioned pointing direction, and fine movement after rough movement can be performed without any anxiety. The adjustment position can be fixed with a set screw 30 that is screwed into the threaded hole 23 of the component piece 22 and can be pressed against the set groove 29 of the sliding piece 28, so that the electrode needle 26 can be fixed during the welding operation. Even if the weld moves, it will not hit the weld pipe and break, or move away from the weld pipe and make welding impossible, and it can be adjusted very easily every time the diameter of the weld pipe changes. have.

(Embodiment) Figures 1 to 3 show an embodiment of the present invention, in which 1 is a pipe holder main body, which is provided with a first circular hole 2 with a first pipe insertion opening 3 opened at the hole edge; 1st
A circular fitting concave surface 4 is provided around the circular hole 2, and a concentric protuberance 5 is provided on the concave surface 4. Reference numeral 6 denotes a ring-shaped welding torch support plate which is fitted into the fitting concave surface 4 and placed on the upper surface of the pipe holder main body 1 so that rotation is guided by the protuberances 5. A second circular hole 8 is formed with a second pipe insertion opening 7 that matches the second pipe insertion opening 7, and a large gear 9 with a portion missing is provided on the outer periphery. A handle 10 containing a built-in drive motor is attached to the pipe holder main body 1 on the side opposite to the first pipe insertion port 3, and a bevel gear-shaped gear 11 fixed to the main shaft of the motor is attached to the pipe holder 1.
A small diameter gear 13 protruding upward and concentric with the bevel gear 12 driven by the gear 11, an intermediate gear 14 on both sides of the small gear 13, and small gears 15 on both sides are provided, and the small gear 15 is connected to the welding torch support plate. 6 and controls the drive of the motor to rotate the welding torch support plate 6 once. Reference numeral 16 denotes a cover fixed to the upper surface of the main body 1, covering a part of the welding torch support plate 6 and the gear group described above.

In the automatic pipe welding machine head having the above-mentioned structure, the present invention has a square-shaped sliding guide groove 24 on the upper surface of the welding torch support plate 6, with the second circular hole 8 of the plate pointing toward the center O. The provided guide piece 21 is attached, and a threaded hole 23 is provided in the constituent piece 22 on one side of the sliding guide groove 24 of the guide piece 21. As shown in FIG. 3, the welding torch 25 in which the electrode needle 26 pointing toward the center O is inserted into the center of the cylinder 27 is provided with a sliding piece 28 that is slidably fitted into the sliding guide groove 24. Sliding piece 28
A long retaining groove 29 with an end that matches the screw threading hole 23 described above is provided parallel to the moving direction. A slider 31 that is slidably fitted into the stop groove 29 is screwed onto the tip of the set screw 30 that is screwed into the screw hole 23. The guide piece 21 is provided with a cylinder 33 whose upper side is closed via a horizontal piece 32 on the side of the component piece 22,
A column 34 into which the tube 33 is fitted from above is attached to the welding torch support plate 6, the tube 33 is fitted onto the column 34, the guide piece 21 is slightly raised, and the horizontal piece 32 is attached to the guide column 35.
and further screw the screw 36 into the support column 34 from the top of the tube 33 to fix it.

In the configuration of this embodiment, the set screw 30 is slightly unscrewed to loosen the pressure on the sliding piece 28 by the slider 31, and then the welding torch 25 is attached to the sliding guide piece 28.
Using the sliding guide groove 24 as a guide, move the electrode needle 26 toward or away from the center O to a suitable distance from the weld seam of the welded pipe P, and when the adjustment is completed, tighten the set screw 30. Fix the welding torch 25. Since the stop groove 29 has an end, the welding torch 25 will not come off the sliding guide groove 24.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, FIG. 1 is a partially cutaway plan view, FIG. 2 is a partially cutaway front view showing the main parts of the present invention, and FIG. 3 is a welding torch 25. FIG. 3 is a perspective view of a sliding piece 28; DESCRIPTION OF SYMBOLS 1... Pipe holder body, 2... First circular hole, 3... First pipe insertion port, 6... Welding torch support plate, 7... Second pipe insertion port, 8... Second notch Circular hole, 9...Large gear, 15...Small gear, 21
... Guide piece, 22 ... Component piece, 23 ... Screw threading hole, 24 ... Sliding guide groove, 25 ... Welding torch,
26... Electrode needle, 27... Cylinder, 28... Sliding piece, 29... Set groove, 30... Set screw.

Claims (1)

[Claims for Utility Model Registration] A pipe holder main body having a first circular hole with a first pipe insertion port opened at the hole edge, and a pipe holder main body having a first circular hole with a first pipe insertion port opened on the hole edge; A similar ring-shaped welding torch support plate that matches the pipe insertion port and is rotated once by a small gear, the center of the second circular hole of the plate is directed onto the welding torch support plate. A guide piece provided with a shaped sliding guide groove is attached, a threaded hole is provided in one component of the guide piece, and the sliding guide groove is attached to the electrode torch having the electrode needle pointing toward the center. A sliding piece is provided which fits into the sliding piece, and a retaining groove is provided in the sliding piece to which the tip of the set screw screwed into the screw engagement hole joins at any movement adjustment position of the sliding piece. automatic pipe welding machine head.