KR101938152B1 - Double Tube Cutting Machine - Google Patents

Abstract

The present invention relates to a dual pipe cutting machine which comprises: a cutting machine body having a U-shaped space part to stably mount an object to be cut; a grip unit extended to one side of the cutting machine body and including a cutting blade movably installed therein; a cutting unit coupled to the cutting blade which is installed in the grip unit to be able to move so as to cut the object to be cut; and a rotation adjustment device rotatably coupled to the grip unit to move the cutting unit. According to the present invention, the cutting blade has a size capable of cutting a pipe or tube formed with a dual pipe, and has a large diameter, thereby providing effects of cutting the dual pipe regardless of the thickness of the dual pipe formed by a dual wall, cutting the dual pipe, a thick pipe, and the like, and being used after replacing an idle bearing as necessary.

Description

{Double Tube Cutting Machine}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting machine for cutting a double pipe, and more particularly, to a double pipe cutting machine capable of cutting a double pipe or a tube having a pipe therein.

Generally, a pipe is used for constructing a hydraulic line used in a drainage line of an industrial site, a supply line, or a facility of various mechanical devices.

Since these pipes are mass-produced in a uniform length in the production process, they are cut by the length required for each construction work.

In order to cut the pipe in this way, a conventional method using an oxygen welder or a band saw machine has been used. However, if the pipe is cut by the conventional method as described above, the cutting surface can not be formed well, It is not possible to precisely cut the cutter to an even length.

Pipe cutting uses band saws or circular saws, and pipe cutting using only such cutter blades is mainly applied to small diameter pipes.

On the other hand, the cutting of the pipe is performed by fixing one end of the long pipe to the chuck and supporting the other pipe by the supporting member.

Such a small diameter pipe is useful because it does not take much time to cut using a band saw or a circular saw simply. However, since a pipe having a large diameter or a pipe having a large diameter and a large diameter has a time limit for cutting using only a cutter, It will be drastically lowered

The cutting machine means a cutting tool for cutting a tubular pipe made of copper or a metal material or forming a groove on the outer surface thereof.

1, the cutting machine 10 includes a body 11 having a hook shape as a whole and a blade 12 for cutting or grooving on the outer surface of the pipe 11 below the body 11, So that the pipe can be pressed through the lifting and lowering of the body 11 and the platform 13 so that the blade 12 is rotated by the rotation of the body 10, .

However, in such a conventional cutting machine, a cutting machine equipped with a blade for forming a groove on the outer surface of the pipe and a cutting machine equipped with a blade for cutting the pipe are separately provided, so that the worker must use the cutting machine required for the work one after the other. There is a problem that the working time is prolonged.

Also, since the cutting blade has a very short blade length, it is not possible to cut a pipe or tube having a double pipe structure.

That is, the blade can cut the thickness from the outer surface to the inner surface of the pipe, and can not cut the inner pipe or tube having a small inner diameter.

For example, Patent Document 1 below discloses a "cutting machine for both grooving".

The cutting machine according to Patent Document 1 described below has a body having a hook shape as a whole so that it can be fitted to the outer surface of the pipe and having a roller insertion groove formed on the upper side thereof and a body rotatably provided on the roller insertion groove, A roller is inserted into a through hole formed in a lower portion of the body and has a hollow portion formed therein and has a plurality of locking projections formed on an outer surface thereof in a vertical length direction, And the adjustment pin engaging with the locking protrusion so that the height can be adjusted step by step in the direction perpendicular to the body.

A second adjusting base which is inserted into the hollow portion in the vertical direction and is vertically movable with respect to the first adjusting base by rotation of the rotary knob by screwing a rotary knob at a lower portion thereof, A guide bar protruding in the longitudinal direction of the upper portion of the guide bar, and a guide protrusion formed on the guide bar protruding from the guide bar, Respectively.

A guide groove formed at a lower portion thereof so as to be slidable with respect to the guide protrusion, a through hole formed to extend from the upper surface to a lower surface of the guide groove, 1 guide grooves are formed on the upper surface of the pipe, and a first mounting base on which a groove for forming grooves is rotatably formed on the upper surface of the pipe, and a first major hole is formed so as to extend from one side to the other side.

A second mounting table having a second guide groove formed at a lower portion thereof so as to be slidable with respect to the guide protrusion, a cutting blade for cutting the pipe at an upper portion thereof rotatably and having a second major hole extending from one side to the other, A fixing pin inserted into the fixture hole and inserted into the fixture hole to fix the gap retaining fixture to the fixture base, and a fixing pin inserted through the rotation hole, the first rotation hole, and the second rotation hole, And a rotary shaft provided so that the first mounting base or the second mounting base is rotatable.

The following Patent Document 2 discloses a pipe cutting apparatus.

The pipe cutting apparatus according to Patent Document 2 is provided with rollers so as to be rotatably supported in the longitudinal direction of the base plate so as to be disposed on opposite sides of the base plate, And the upper and lower clamping blocks are slidably moved in opposite directions by rotating the upper and lower clamping blocks by motor driving. And a screw shaft.

A shaft fixed to the base plate for allowing the pipe to be fixed or escaped from the base plate by allowing the lower end of the base plate to move along the rail in an orthogonal direction to the longitudinal direction of the base plate while axially supporting the screw shaft, A pipe loading unit for clamping the outer circumferential surfaces of both sides of the pipe which is made up of blocks and loaded at the upper part of the base plate, a pipe loading unit provided at one end of the base plate so as to be movable in the longitudinal direction of the base plate, And a chucking portion for rotating the fixed pipe while allowing the pipe to be fixed.

A shaft supporting portion for pressing and clamping the outer circumferential surface of the pipe rotatably at the other side of the base plate corresponding to the chucking portion, a pipe supported by the chucking portion and the shaft supporting portion at the other end of the base plate, And a cutter portion.

Korean Patent Registration No. 10-1467521 Korean Patent Registration No. 10-1721693

SUMMARY OF THE INVENTION An object of the present invention is to provide a cutter for cutting a double pipe, such as a double pipe or a double tube, having a large thickness, which can be cut regardless of its thickness.

In order to accomplish the above object, the present invention provides a cutter for cutting a double pipe, comprising: a cutter body having a U-shaped space formed therein for stably holding a cutting object to be cut; A handle portion extending to one side of the cutting machine main body and having a cutting blade movably installed therein; A cutting part movably installed on the inside of the handle part and coupled with a cutting blade for cutting a cutting object; And a rotation control member rotatably coupled to the handle to move the cutting unit, wherein the cutting blade is formed to have a size capable of cutting a pipe or tube made of a double pipe.

Wherein the handle portion includes a blade insertion groove portion in which the cutting blade is movably installed; And a support base insertion groove part formed inside the blade insertion groove part such that a fixed support base to which the cutting blade is fixed is movable.

And the cutting blade is formed to have a length of 0.5 to 0.9 of the entire length of the U-shaped space part.

A cutting blade having a predetermined diameter to cut the object to be cut; A pair of bearings installed on both sides of the cutting blade to smoothly rotate the cutting blade; A fixing support installed on an outer surface of the bearing to support the cutting blade; A fixing shaft installed at the center of the cutting blade; And a snap ring installed on the fixed shaft so that the cutting blade, the pair of bearings, and the fixed support are integrally coupled to each other.

And an idle bearing installed at one side of the U-shaped space part to smoothly rotate the object to be cut.

Wherein the handle has a fixing groove formed on one surface of the cutting machine body; A magnetic body provided in the fixed groove; And a cutting display member coupled with the magnetic force of the magnetic body and the fixing groove portion.

The handle may further include a cover provided on an outer surface of the cutting display member to firmly attach the cutting display member.

As described above, according to the cutting machine for cutting a double pipe according to the present invention, it is possible to cut a double pipe regardless of the thickness of the double pipe formed as a double pipe, cut a double pipe and a pipe having a large thickness, , And an effect that the idle bearing can be used by being replaced if necessary can be obtained.

According to the cutting machine for cutting a double pipe according to the present invention, since the cutting blade has a flat surface in a straight line, the cutting surface can be cut straight, and a cutting display member, which accurately displays the cutting position, The cutting display member can be prevented from being erroneously cut and the like, and the effect that the cutting display member can be firmly attached by the magnetic body and the cover can be obtained.

Fig. 1 is a perspective view showing a conventional cutter for cutting,
FIG. 2 is a perspective view showing a cutter for cutting a double pipe according to a preferred embodiment of the present invention,
3 is a perspective view showing a cutter for cutting a double pipe according to a preferred embodiment of the present invention,
4 is an exploded perspective view showing a cutting portion of a cutting machine for cutting a double pipe according to a preferred embodiment of the present invention,
FIG. 5 is a plan view showing a state in which a cutting portion of a cutting machine for cutting a double pipe according to a preferred embodiment of the present invention is drawn into a handle portion,
FIG. 6 is a plan view showing a state in which a cutting portion of the cutting machine for cutting a double pipe according to a preferred embodiment of the present invention is protruded and retracted,
FIG. 7 is a plan view showing a state in which a double pipe is cut by a double pipe cutting machine according to a preferred embodiment of the present invention,
8 is a plan view showing a state in which a dual pipe is cut by a double pipe cutting machine according to a preferred embodiment of the present invention;
FIG. 9 is a perspective view showing a cutter for cutting a double pipe according to another preferred embodiment of the present invention. FIG.
FIG. 10 is a perspective view of a cutter for cutting a double pipe according to another preferred embodiment of the present invention,
11 is a perspective view of a cutter for cutting a double pipe according to another preferred embodiment of the present invention,
12 is a sectional view showing a cutting blade of a cutting machine for dual pipe cutting according to another preferred embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a cutting apparatus for cutting a double pipe according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The cutter for cutting a double pipe according to a preferred embodiment of the present invention includes a cutting machine body 10 having a U-shaped space portion for stably holding a cutting object to be cut, a cutter body 10 extending to one side of the cutting machine body 10, A handle portion provided movably; A cutting part movably installed on the inside of the handle part and coupled with a cutting blade for cutting a cutting object; And a rotation adjuster rotatably coupled to the handle to move the cutting portion, wherein the cutting blade is sized to cut a pipe or tube made of a double tube.

The double pipe cutting apparatus according to the embodiment of the present invention cuts the double pipe or the double tube integrally formed therein with the cutter at a time, so that the double pipe can be easily cut by the cutting machine.

FIG. 2 is a perspective view showing a cutting machine for cutting a double pipe according to a preferred embodiment of the present invention, FIG. 3 is a perspective view showing a cutting machine for cutting a double pipe according to a preferred embodiment of the present invention, 1 is an exploded perspective view showing a cutting portion of a cutting machine for a double pipe cutting according to a preferred embodiment of the present invention.

2 to 4, the cutting machine includes a cutting machine body 10 configured to receive a cutting object to be cut, a handle 20 integrally extended from the cutting machine body 10, A cutting portion 30 movably installed inside the handle 20 and a rotation adjuster 40 installed on the handle 20 to move the cutting portion 30.

The cutting machine body 10 includes a body 11 formed in a substantially U shape, a space 12 formed in the U shape body 11 to receive the object to be cut, And an idle bearing (13) installed on one side of the body (11) for smooth rotation of the object.

The space portion 12 is formed to have a size capable of accommodating a double pipe of 1 inch size and the space portion 12 is formed to be opened at one side of the U-shaped body 11. A handle 20 is integrally formed on one side of the body 11 and an idle bearing 13 is rotatably installed on the other side of the body 11 so as to smoothly rotate the object to be cut.

The handle 20 is formed to have a predetermined length so that the operator can stably grasp the cutting machine.

The handle 20 includes a blade insertion slot 21 formed so that the cutting blade 31 is movably installed therein and a fixed support base 31 having the cutting blade 31 fixed to the inside of the blade insertion slot 21 And a support base insertion groove portion 22 formed to be movable.

The handle 20 includes a blade insertion slot 21 into which the cutting blade 31 of the cutting unit 30 is inserted and a support slot 22 is integrally formed.

The blade insertion slot 21 is formed such that the cutting blade 31 is opened to enter the inside of the handle 20 and the blade insertion slot 21 is formed to correspond to the cutting blade 31.

The support base insertion groove portion 22 is formed corresponding to the fixed support base 33 for supporting the cutting blade 31. The blade insertion groove portion 21 and the support base insertion groove portion 22 are formed to correspond to the cutting portion 30 .

7 and 8). The cutting portion 30 includes a cutting blade 31 formed to have a predetermined diameter to cut the object to be cut, a cutting blade A pair of bearings 32 provided on both sides of the cutting blade 31 so as to smoothly rotate the cutting blade 31 and a fixing support 33 A fixing shaft 34 installed at a center of the cutting blade 31, a cutting blade 31, a pair of bearings 32, and the fixing support 33 are integrally coupled to each other, And a snap ring 36 mounted on the base plate 34.

The cutting blade 31 is formed as a circular plate so as to cut an object to be cut and a pair of bearings 32 are installed on both sides of the cutting blade 31 to smoothly rotate the cutting blade 31.

The fixed shaft 34 is coupled to the cutting blade 31, the pair of bearings 32, and the fixed support 33. The fixed shaft 34 is fixed to the fixed shaft 33, The shaft 34 is formed with a fixing groove 35 to which the snap ring 36 is coupled.

FIG. 5 is a plan view showing a cutting part of the double pipe cutting machine according to a preferred embodiment of the present invention in a state where the cutting part is pulled into the handle part, FIG. 6 is a cross- Fig.

As shown in FIGS. 5 and 6, the cutting blade 31 may have a length of 0.5 to 0.8 times the entire length of the U-shaped space portion 13. 6, the length of the cutting blade 31 is shorter than the length L1 of the space 12. The length of the cutting blade 31 is equal to the length of the space 12, And is formed to have a length of approximately 0.5 to 0.9 of the length L1.

The knob 20 is provided with a rotation control member 40 for moving the cutting member 30 and the rotation control member 40 is rotatably coupled to the cutting member 30.

Next, a coupling relationship of a cutting machine for cutting a double pipe according to a preferred embodiment of the present invention will be described.

The cutter for cutting a double pipe according to the embodiment of the present invention is characterized in that a body 11 of the cutting machine body 10 is formed in a substantially U shape and a space portion 12 ). The space 12 may be formed to have a length of about 2 inches or less, or may have a length of 1 inch or less if necessary.

An idle bearing 13 is installed on the other side of the body 11 so as to smoothly rotate the object to be cut. The idle bearing 13 is installed so that the object to be cut is smoothly rotated. And are installed in pairs so as to be spaced apart by a predetermined distance so that the objects can be safely seated.

The idle bearing 13 may be replaceably mounted on the body 11. The idle bearing 13 may be divided into three as shown in FIG. 2, but may be divided into two as shown in FIG. This is because the contact area with the double tube 50 is widened so that the double tube 50 can be more stably supported.

A knob 20 is formed at a predetermined length on one side of the body 11 and a blade insertion groove 21 is formed in the knob 20 to move the cutting blade 31 of the cutting portion 30 And a support base insertion groove portion 22 is integrally formed at the center of the blade insertion groove portion 21 so that the fixed support base 33 of the cutting portion 30 is moved.

The cutting portion 30 is provided with a bearing 32 on both sides of a cutting blade 31 for cutting the object to be cut and a fixing support 33 for fixing the cutting blade 31 to the outer surface of the bearing 32 ).

That is, the fixing shaft 34 is inserted in a state in which the cutting blade 31, the bearing 32 and the fixing support 33 are arranged in a straight line, and the fixing groove 35 of the fixing shaft 34 is provided with a snap ring (36).

The cutting portion 30 is provided with a bearing 32 and a fixed support 33 on both sides of the cutting blade 31 as a reference.

Further, a rotation control member 40 is rotatably coupled to the fixed support 33 at the end of the handle 20. The rotation control member 40 moves the fixing support 33 to move the cutting blade 31.

FIG. 9 is a three-dimensional view showing a cutting machine for cutting a double pipe according to another preferred embodiment of the present invention, FIG. 10 is a three-dimensional view showing a cutting machine for cutting a double pipe according to another preferred embodiment of the present invention, Fig. 3 is a perspective view of a cutter for cutting a double pipe according to another preferred embodiment of the present invention.

9, the cutting machine for cutting a double pipe according to another embodiment of the present invention is characterized in that the fixing groove 14 is formed on one side of the cutting machine body 10 so that the cutting display member 16 is installed, And a cover 17 for stably fixing the cutting display member 15. The cut display member 16 is provided with a cut-out portion 16,

A fixing groove 14 is formed on one side of the cutting machine body 10 so that a circular cutting display member 16 can be installed. The fixing groove portion 14 is formed by a first fixing piece 14a having a half-moon shape and a second fixing piece 14b having an arc shape on one surface of the cutting machine body 10.

The fixing groove portion 14 is formed to have a circular cutting display member 16 and a magnetic body 15 for fixing the cutting display member 16 in a stable manner Is installed.

That is, the cutout display member 16 is stably fitted to the fixed groove 14 and is firmly attached by the magnetic force of the magnetic body 15.

In addition, the cutting member 16 can be made to correspond to a precise point to be cut during the cutting operation of the pipe or the pipe. By fitting the cutting member 16 to the pipe or pipe to be cut in advance, Point can be displayed accurately.

The cutout display member 16 is engaged with the fixing groove 14 so that the cutter can be positioned at a point at which the pipe or pipe is cut.

It should be appreciated that the cutting display member 16 can be used not only to display the cut region in advance, but also to display the cut region or point to be cut.

As shown in Figs. 10 and 11, a lid 17 is provided so as to fix the cutting display member 16 more firmly. The lid 17 is tightly fixed to the outer surface of the cutout display member 16 so that the cutout display member 16 is more firmly fixed to the cutter body 10. [

That is, the lid 17 is brought into close contact with the outer surface of the cutout display member 16 by the magnetic force of the magnetic body 15 provided in the fixed cutout 14, thereby preventing the cutout display member 16 from being separated or separated during operation .

12 is a sectional view showing a cutting blade of a cutting machine for dual pipe cutting according to another preferred embodiment of the present invention.

As shown in FIG. 12 (a), the cutting blade 31 is formed so that the cut end face of the pipe or pipe to be cut is at right angles.

One side of the cutting blade 31 is formed as a straight plane and the other side of the cutting blade 31 is formed to be inclined at a predetermined angle.

As shown in Fig. 12 (a), the cutting blade 31 may be formed so that the cutting blade is inclined to both sides in the same manner as the ordinary blade 31. [

2 to 12, a method of operating a cutter for dual pipe cutting according to a preferred embodiment of the present invention will be described.

FIG. 7 is a plan view showing a state in which a double pipe is cut by a double pipe cutting device according to a preferred embodiment of the present invention, FIG. 8 is a view showing a state in which a double pipe is cut by the double pipe cutting device according to a preferred embodiment of the present invention Fig.

7 shows a state in which the double tube 50 is seated in the space 12 of the cutting machine body 10 and FIG. 8 shows a state in which the cutting blade 31 cuts the double tube 50 .

The hollow pipe 50 is supported at one side by a pair of idle bearings 13 and a cutting blade 31 is provided at a symmetrical surface of the hollow pipe 50. [ .

In this state, the operator grips the handle 20 and rotates the cutter in a state in which the double pipe 50 is in close contact. The cutting blade 31 is rotated along the outer surface of the double tube 50 to cut the double tube 50.

Since the cutting blade 31 is formed to have a length of 0.5 to 0.9 times the entire length of the space 12, the cutting blade 31 can cut the double tube 50 regardless of the thickness of the double tube 50 .

On the other hand, since the cutting blade 31 has a flat surface and the other surface is inclined, the cut surface of the double pipe 50 or the pipe and the pipe is cut in a straight line, and the double pipe 50 or pipe is cut at the precise point Since the cutting is performed in a state in which the cutting member 16 is positioned in the cutting position.

In addition, since the cutting unit is positioned at a position to be cut in a state where the cutting unit 16 is coupled to the fixing groove 14 of the cutting machine body 10, cutting is performed at an exact point to be cut.

Further, the cutting marking member 16 is attached by the magnetic force of the magnetic body 15 or is firmly attached by the lid 17 to prevent the double pipe 50 or the pipe or pipe from being cut off.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

10: Cutting machine body 11: Body
12: Space section 13: Idle bearing
20: handle 21: blade insert groove
22: Support base insertion groove
30: cutting portion 31: cutting blade
32: Bearing 33: Fixed support
34: fixed shaft 35: fixed groove portion
36: Retaining ring
40:

Claims (7)

A body 11 on which a U-shaped space part 12 is formed so as to stably hold a cutting object to be cut, and a body 11 formed with a U-shaped space part so as to smoothly rotate the object to be cut And a fixing groove 14 is formed on one surface of the body 11 so as to be inserted into the fixing groove 14 so as to accurately display or cut the position to be cut And a magnetic body 15 is provided on the inner side of the fixing groove 14 so as to stably fix the cutting display member 16 so as not to separate or separate the cutting display member 16, A cover 17 for preventing the cutout display member 16 from being separated or separated from the cutout display member 16 due to the magnetic force of the magnetic body 15 provided in the fixed cutout portion 14 is attached to the outer surface of the cutout display member 16, A non-cutter body 10;
A blade insertion slot 21 is formed to extend to one side of the cutting machine body 10 so that the cutting blade 31 is movably installed and the cutting blade 31 is fixed to the inside of the blade insertion slot 21 A handle 20 having a support table insertion groove 22 formed therein so that the fixed support table 33 can be moved;
A cutting blade 31 is provided at a predetermined diameter so as to cut the object to be cut and is installed inside the handle 20 so that the cutting blade 31 is smoothly rotated, And a fixing support 33 provided on an outer surface of the bearing 32 so as to support the cutting blade 31. The fixing blade 33 is fixed to the center of the cutting blade 31, A shaft 34 is provided and a snap ring 36 is provided on the fixing shaft 34 so that the cutting blade 31, the pair of bearings 32, and the fixing support 33 are integrally coupled, A cutting portion 30 having a fixing groove 35 to which a snap ring 36 is coupled;
And a rotation control member (40) rotatably coupled to the handle (20) to move the cutting unit (30)
A first fixing piece 14a having a half-moon shape on one surface of the cutting machine body 10; And
And a second fixing piece (14b) formed in an arc shape around the first fixing piece (14a)
The fixing groove portion 14 is formed between the first fixing piece 14a and the second fixing piece 14b by the first fixing piece 14a and the second fixing piece 14b,
Wherein the cutter is configured to align the cutting portion (30) at a point of a cutting portion of the cutting object by fitting the cutting display member (16) fitted with the cutting object into the fixing groove portion (14).
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