JPH11300658A - Marking tool for pipe cutting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and accurately draw a straight line by extending receiving and inserting grips for attaching/detaching a ring-shaped main body from a pipe to the cut face of the ring-shaped main body cut in one place and cutting an optional one side of the ring-shaped main body obliquely on a full surface to form a ruler face. SOLUTION: One optional side of a main body 1 formed in a ring shape 9 is cut obliquely on a full surface to form a ruler face 4, and accordingly the contact of the pen tip of a marker pen is made easy. Also, in the face of a receiving grip 2 contacted by an inserting grip 3, two holes 5 are put through and, on the other hand, in the contact surface of the inserting grip 3, two projections 6 are provided so as to be inserted into the holes 5 freely detachably. During use, the receiving and inserting grips 2 and 3 are separated to open the ring, and the ruler face 4 of the main body 1 is aligned in the cutting position of the pipe. Then, the receiving and inserting grips 2 and 3 are joined and fixed to the pipe. Marking on the pipe is carried out by moving the marker pen on the circumference of the pipe along the ruler face 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for marking a cutting position when cutting a synthetic resin or steel pipe.

[0002]

2. Description of the Related Art Conventionally, when a pipe used for water supply / drainage / hot water supply is to be constructed on site, the pipe must be positioned by matching the actual object.
The cutting position was marked with a marker pen or the like and cut.

[0003]

However, when marking the entire circumference of the pipe with a marker pen or the like at the construction site, it is a free hand operation, so that the pipe is perpendicular to the pipe axis. And it was very difficult to draw a linear trajectory, and therefore, a meandering line was drawn. On the basis of this, since the pipe was cut by using a grinder or the like while rotating the pipe appropriately, the cut surface became coarse and not only required reworking but also the quality was not sufficient.

[0004]

In order to solve the above-mentioned problems, according to the present invention, a receiving handle for attaching and detaching a ring main body to and from a pipe is inserted into a cut surface of a ring-shaped main body cut at one place. A handle is extended, and an arbitrary side of the ring-shaped main body is cut obliquely over the entire circumference to form a ruler surface. Further, a cut is made in the axial direction inside the intermediate point of the ring-shaped main body while leaving a slight thickness, and the cut portion is used as a fulcrum to open outward. In addition, the upper ring and the lower ring are composed of an upper ring provided with insertion pieces at both ends of a semicircular ring portion and a lower ring provided with receiving pieces at both ends of the semicircular ring portion. Is cut obliquely over the entire circumference to form a ruler surface. Further, a bolt is erected near an arbitrary end of the main body formed in a belt shape and a nut is screwed, and a slide hole is provided from near the other end to near the center, and an arbitrary one of the main body is formed. The sides are cut obliquely over all sides to form a ruler surface.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pipe cutting marking tool according to the present invention is formed in a ring shape with one portion cut, and a receiving side handle and an insertion handle provided at both ends of the ring are attached and detached. It can be wound at a predetermined position on the circumference.

An arbitrary side of the ring-shaped main body is
Cut obliquely over the entire circumference to form a ruler surface,
The pen tip of the pen is easily contacted.

In the second embodiment, a cut is made in the axial direction on the inside of the middle point of the ring (the side in contact with the pipe).
The notch is used as a fulcrum to open outward.

In the third embodiment, a semicircular upper ring and a lower ring are provided, and substantially L-shaped inserts are provided at both ends of the upper ring, and rectangular ends are formed at both ends of the lower ring. The receiving piece is extended.

In the fourth embodiment, the main body is formed in a belt shape, an embedded bolt is erected near an arbitrary end of the main body, and a wing nut is screwed to the embedded bolt. From the other end of the main body to near the center, the pipe
A long hole is provided so that it can be used for a king.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a first embodiment of the present invention.
FIG. 2 is an enlarged sectional view of the attaching / detaching portion. In the figure, the main body 1
Is formed in a ring shape 9 by cutting a single place using a flexible synthetic resin plate or a metal plate. At both ends of the ring, a substantially L-shaped receiving handle 2 and insertion handle 3 are erected perpendicularly to the circumferential surface of the ring. Any one side of the main body 1 formed in a ring shape 9 is cut obliquely over the entire circumference to form the ruler surface 4 so that the pen tip of the marker pen can be easily contacted. The receiving handle 2 is the insertion handle 3
Two holes 5 penetrate through the surface of the handle 3, while the contact surface of the insertion handle 3 is provided with two projections 6 which are removably inserted into the holes 5.

FIG. 3 is a front view showing the second embodiment, and FIG. 4 is an enlarged view of the intermediate point 7 portion. In the figure, a cut 8 is made in the axial direction inside the intermediate point 7 of the main body 1 formed in a ring shape 9 (on the side in contact with the pipe 25) while leaving a slight thickness, and the cut 8 is used as a fulcrum to make a cut. It opens in the direction. Note that the structure is the same as that of the first embodiment except that a cut 8 is provided.

FIG. 5 is a perspective view showing a third embodiment, and FIG. 6 is a partially enlarged perspective view in which a detachable portion is separated. In the figure, an upper ring 10 and a lower ring 13 are used by using a flexible synthetic resin plate or a metal plate. The upper ring 10 has insertion pieces 1 at both ends of a ring portion formed in a semicircular shape.
1 is provided. The insertion piece 11 is formed in a substantially L-shape, and the horizontal portion is formed by cutting out a part of both sides into a concave shape 12 and bending the tip to the receiving piece 14 side. The lower ring 13 has receiving pieces 14 at both ends of a ring portion formed in a semicircular shape.
The receiving piece 14 extends in the horizontal direction, and the concave 12
The boss 15 is erected at a position opposite to. Upper ring 10
One side of the lower ring 13 is cut obliquely over the entire circumference to form a ruler surface 4 so that the pen tip of the marker pen can be easily contacted.

FIG. 7 is an exploded plan view showing a fourth embodiment, and FIG. 8 is an explanatory view showing a state where the pipe 25 is mounted. In the figure, a main body 21 is formed in a belt shape using a flexible synthetic resin plate or a metal plate. Body 21
An embedding bolt 22 is erected near any one end of the above, and a wing nut 23 is screwed into the embedding bolt 22. From the vicinity of the other end of the main body 21 to the vicinity of the center thereof, a slide hole 24 is provided so as to be used for marking pipes of various diameters. Any one side of the main body 21 is cut obliquely over all sides to form the ruler surface 4 so that the pen tip of the marker pen can be easily contacted.

The present invention is formed as described above, and is used as follows. In the first and second embodiments, after the position of the pipe 25 to be cut is determined, the receiving handle 2 and the insertion handle 3 are separated to open a ring, and the ring is inserted into the pipe 25 and the ruler of the main body 1 is positioned at the position. After the surfaces 4 are aligned, the receiving handle 2 and the insertion handle 3 are joined and fixed to the pipe 25.
In the third embodiment, the upper ring 10 is covered with the ruler surface 4 of the lower ring 13 aligned with the position of the pipe 25 to be cut, and the insertion piece 11 is attached to the receiving piece 14 so that the pipe 25 is cut. Fixed to. In the fourth embodiment,
The ruler surface 4 of the main body 21 from which the wing nut 23 has been removed is wound around the pipe 25 at the position where the pipe 25 is to be cut.
2 is inserted into the slide hole 24, wound around the outer diameter of the pipe 25, and tightened with the wing nut 23. The marking on the pipe 25 can be easily made by moving the marker pen along the ruler surface 4 to the circumferential surface of the pipe 4.

[0015]

The marking tool for cutting a pipe according to the present invention is constituted as described above, and has the following effects.

The ruler surface of the pipe-cutting marking tool is wound around the pipe in a direction perpendicular to the axis of the pipe and over the entire circumference, and the marker is drawn along the ruler surface with a marker pen.
By king, anyone can draw straightforward and accurate straight lines.

If the marking tool according to the fourth embodiment is used, it can be used for marking pipes of various diameters, which is very convenient.

[Brief description of the drawings]

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

FIG. 2 is an enlarged sectional view of a detachable part.

FIG. 3 is a front view showing a second embodiment of the present invention.

FIG. 4 is an enlarged view of an intermediate point portion.

FIG. 5 is a perspective view showing a third embodiment of the present invention.

FIG. 6 is a partially enlarged perspective view in which a detachable portion is separated.

FIG. 7 is a developed plan view showing a fourth embodiment of the present invention.

FIG. 8 is an explanatory view showing a state where the apparatus is mounted on a pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Receiving handle 3 Inserting handle 4 Ruler surface 7 Intermediate point 8 Cut 10 Upper ring 11 Inserting piece 13 Lower ring 14 Receiving piece 21 Main body 22 Stud bolt 23 Wing nut 24 Slide hole 25 Pipe

Claims (4)

[Claims] A receiving handle (2) and an insertion handle (3) for attaching and detaching the main body (1) to and from a pipe (25) are provided on a cut surface of a ring-shaped (9) main body (1) cut at one place. )
An arbitrary side of the main body (1) formed in a ring shape (9) is
A marking tool for cutting pipes, characterized in that a ruler surface (4) is formed by cutting off obliquely over the entire circumference. 2. An incision (8) is made in the axial direction inside the intermediate point (7) of the main body (1) formed in a ring shape (9) while leaving a slight thickness, and the incision (8) is made. 2. The marking tool for cutting a pipe according to claim 1, wherein the marking tool is opened outward with the fulcrum as a fulcrum. 3. An upper ring (10) provided with insertion pieces (11) at both ends of a semicircular ring portion, and a receiving piece (14) provided at both ends of the semicircular ring portion. For cutting a pipe, wherein one side of the upper ring (10) and the lower ring (13) is cut obliquely over the entire circumference to form a ruler surface (4). Marking tool. 4. A stud bolt (22) is erected near an arbitrary end of a main body (21) formed in a belt shape, and a wing nut (23) is screwed into the main body (21). A slide hole (24) is provided near the center, and the main body (2) is provided.
An arbitrary one side of 1) is cut obliquely over all sides to form a ruler surface (4), and a pipe cutting marker is provided.
King tool.