JPH0260451B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for cutting the above-mentioned pipe having an appendage inward from the inner end of the pipe.
In particular, the present invention relates to a method and apparatus for cutting a tube so that dimensions from the tube end to an accessory inside the tube are made uniform.

[Conventional technology]

Conventionally, a scale and an ordinary cutter are used to cut the above-mentioned pipes that have attachments inward from the inner pipe end, and the scale is inserted from the pipe end into each pipe, and the pipe is cut from the pipe end. The cutting position was determined by measuring the distance to the fixture inside the pipe, and the pipe was cut one by one using the above-mentioned ordinary cutting machine.

[Problem that the invention seeks to solve]

In such conventional cutting methods and equipment, a scale and a normal cutting machine are used to cut pipes with internal fittings one by one, with the cutting position determined by the scale for each pipe as described above. As a result, there was a problem in that the length accuracy from the tube end to the fittings inside the tube deteriorated.

In addition, since each piece is cut one by one, there is a problem that the workability of cutting is poor.

[Means for solving problems]

In order to eliminate the above-mentioned problems in the conventional method, the present invention inserts a plurality of rod-shaped stoppers 4 from the tube ends 3 of a plurality of tubes 2 having internal pipe fittings 1, as shown in FIGS. 1 and 2. Cutting is performed by bringing the tip into contact with and pressing the pipe 2, moving the pipe 2 in the tube axis direction, and aligning the abutting positions of the pipe pipe 1 and the light ends of the plurality of rod-shaped stoppers 4. The position is set, and then the tube 2 is extracted from the tube using the fixture 5 and cut at the set cutting position.

It also includes a rod-shaped stopper 4 that is inserted from the tube end 3 of a tube 2 having an internal pipe fitting 1 and presses against the pipe internal fitting 1 by bringing its tip into contact with the pipe internal fitting 1, and a fixture 5 for the pipe 2. It is.

[Effect]

According to the above-mentioned means of the present invention, the length from the tube end 3 to the attachment 1 inside the tube 2 can be set by pressing with a rod-shaped stopper, so the accuracy of the cutting length is improved.

Furthermore, since multiple tubes can be cut at the same time, the cutting work efficiency is improved.

〔Example〕

The present invention will be explained below with reference to embodiments shown in the drawings. FIG. 2 shows a pipe 2 having an internal fitting 1 inward from the pipe end 3. In FIG. The plurality of rod-shaped stoppers 4 are advanced and inserted, their tips are brought into contact with the pipe-internal attachment 1, and further pressed, the pipe 2 is moved in the pipe axial direction, and the pipe-inner fitting 1 and the rod-shaped The cutting position is set by aligning the contact positions with the tip of the stopper 4. Next, the fixture 5 is lowered to tighten and fix the pipe 2, and then the rod-shaped stopper 4 is extracted from the pipe 2 and cut at the set cutting position.

〔Effect of the invention〕

As explained above, the method and device for cutting a pipe according to the present invention can be achieved by simply inserting a rod-shaped stopper from the end of the pipe having an internal fitting, and pressing the tip with the tip abutting against the internal fitting. Since the cutting position is set, the work becomes faster and the accuracy of the cutting length is improved. Furthermore, since multiple tubes can be cut at the same time, the cutting work efficiency is improved.

It can also be used to measure the length from the end of a processed pipe with holes.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view showing a method and apparatus for cutting a pipe, and FIG. 2 is a longitudinal sectional view of a pipe having internal fittings. 1: In-pipe fittings, 2: Pipe, 3: Pipe end, 4: Stopper, 5: Fixing tool.

Claims (1)

[Claims] 1. A rod-shaped stopper is inserted from the end of a pipe having an internal fitting, the tip is brought into contact with and pressed against the internal fitting, and the pipe is moved in the axial direction to remove the internal fitting. Set the cutting position by aligning the abutting position between the object and the tip of the rod-shaped stopper,
Next, the tube is fixed with a fixture, the rod-shaped stopper is extracted from the tube, and the tube is cut at the set cutting position. 2. A pipe cutting device characterized by comprising: a rod-shaped stopper that is inserted from the end of a pipe having an internal fitting, and whose tip abuts and presses against the internal fitting; and a fixture for the pipe. .