KR20170046933A

KR20170046933A - Pipe cutting machine

Info

Publication number: KR20170046933A
Application number: KR1020150147152A
Authority: KR
Inventors: 공영상; 정태영
Original assignee: (주)삼영피팅
Priority date: 2015-10-22
Filing date: 2015-10-22
Publication date: 2017-05-04
Also published as: KR101800720B1

Abstract

A pipe cutter, comprising: a seat portion on which a pipe is seated; A first rotating part for supporting a lower side of the pipe and capable of rotating the pipe; An end fixing portion located at one end of the pipe and capable of fixing the pipe; A cutting section for cutting the pipe; And a second rotary part located at an upper portion of the pipe and capable of supporting the rotation of the pipe, the second rotary part having a concavo-convex shape on an outer surface thereof.

Description

[0001] PIPE CUTTING MACHINE [0002]

The present invention relates to a pipe cutter.

Generally, since the pipe manufacturing process is performed continuously, the pipe is continuously cut out without interruption of the pipe manufacturing process in order to cut the produced pipe by a predetermined length. In this operation, when the pipe is cut, the cutting operation is performed by a cutter such as an automatic cutter or a manual cutter.

However, when the pipe is cut by cutting the pipe by cutting the pipe when cutting the pipe, the operation speed is slow and the continuous operation becomes difficult, and the cutting operation time is delayed if possible.

Korean Patent Registration No. 1996-001345 (May 22, 1996)

One embodiment of the present invention seeks to provide a pipe cutter that stably supports the rotating pipe at the top and bottom during pipe cutting.

One embodiment of the present invention is to provide a pipe cutter including a member for restraining movement and fluctuation of a rotating pipe.

A pipe cutter, comprising: a seat portion on which a pipe is seated; A first rotating part for supporting a lower side of the pipe and capable of rotating the pipe; An end fixing portion located at one end of the pipe and capable of fixing the pipe; A cutting section for cutting the pipe; And a second rotating part which is located at an upper portion of the pipe and can support the rotation of the pipe, and has a concave and a convex shape on the outer surface thereof.

And the second rotating portion can support the pipe to suppress movement and fluctuation of the pipe.

The unevenness of the second rotating portion can provide a thrust to the pipe toward the end fixing portion.

The irregularities of the second rotating part may be formed in a shape in which the thread and the thread are repeated.

And the second rotating portion can be moved back and forth to the pipe side.

The concavity and convexity of the second rotary part may be inclined corresponding to the rotating direction of the pipe.

And a vise coupled to the seat portion and capable of moving the pipe to the cutting position of the cut portion.

The seat portion can be raised and lowered, and the pipe can be positioned at the cutting position of the cut portion by the descent of the seat portion after being seated and conveyed to the raised seat portion.

The pipe cutter according to the embodiment of the present invention can stably support the rotating pipe at the top and bottom.

The pipe cutter according to the embodiments of the present invention can suppress movement and fluctuation of the rotating pipe.

1 is a perspective view of a pipe cutter according to an embodiment of the present invention,
FIG. 2 is a view illustrating a state where a pipe is seated in a seating part according to an embodiment of the present invention;
3 is a view illustrating a pipe cut portion according to an embodiment of the present invention.
4 is a view showing the rotation direction of the pipe, the first rotating part, and the second rotating part except the cutting part according to the embodiment of the present invention,
5 is a view illustrating a spiral direction of a second rotary unit according to an embodiment of the present invention,
6 is a view showing the shape of the irregularities formed on the outer surface of the second rotating part according to the embodiment of the present invention,
7 is a view showing another shape of the concavo-convex formed on the outer surface of the second rotating part according to the embodiment of the present invention;

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is an exemplary embodiment only and the present invention is not limited thereto.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical idea of the present invention is determined by the claims, and the following embodiments are merely a means for efficiently describing the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs.

1 is a perspective view of a pipe cutter 1 according to an embodiment of the present invention. 1, the pipe cutter 1 includes an end fixing part 40 for fixing the pipe 10, a first rotation part 50 for supporting the pipe 10 and rotating the pipe 10, A second rotary part 60 positioned above the pipe 10 and capable of supporting the rotation of the pipe 10 and having concavo-convex structures on the outer surface thereof, a cutting part 70 for cutting the pipe 10, a cutting part 70, A power transmission unit 80 that can rotate the motor 80 in an endless track, and a support unit 90 that can move up and down.

2 is a view showing a state in which a pipe 10 is seated in a seating part 20 of a pipe cutter 1. Fig. The pipe cutter 1 may further comprise a vise 30 movably coupled at the seat 20 and capable of transporting the pipe 10 to the cutting position of the cutout 70. [ The seat 20 can be raised and lowered and the pipe 10 can be positioned at the cutting position of the cutout 70 by the descent of the seat 20 after it has been seated and transported to the raised seat 20 have. Here, 'cutting position' means the position of the pipe 10 where cutting of the pipe 10 of the cut portion 70 can be performed. That is, as shown in FIG. 3, it means the position of the pipe 10 where the cutting portion 70 is located above the position where the pipe 10 should be cut.

The pipe cutter 1 according to the embodiment of the present invention can cut pipes having various diameters. Further, even if the length of the pipe 10 to be cut is long, the seating portion 20 can be formed to be long along the length of the pipe 10 so as to be seated and cut. On the other hand, the seat portion 20 can be provided with the conveying roller 22 so that the pipe 10 can be conveyed. In order for the pipe 10 to be seated in the seating portion 20, the seating portion 20 can be raised and lowered using a cylinder device. After the pipe 10 is seated in the raised seating portion 20, it can be conveyed by the conveying roller 22 and a vise 30 to be described later. The seat portion 20 can support the lower portion of the pipe 10 on which the seat 10 is seated. A plurality of conveying rollers 22 may be included in the seating portion 20 so that the pipe 10 is stably conveyed and supported along the seating portion 20. [

The vise 30 is provided so as to be movable along the seating portion 20 to the seating portion 20 and can grip the pipe 10 from the side portion. The vise 30 may include a compression plate 32 movable toward the pipe 10 to grip the side of the pipe 10. The pressing plate 32 can be adjusted to move toward the pipe 10 depending on the size of the pipe 10. [ The clamping plate 32 can be moved toward the pipe 10 side and can be brought into contact with and pressed against the outer surface of the pipe 10 in order to fix the pipe 10 seated in the seating portion 20. [ The compression plate 32 can be brought into close contact with the pipe 10 to fix the pipe 10 thereto. The fixed pipe 10 can be transferred to the cutting position of the cut portion 70 by the movement of the vise 30. [ That is, the vise 30 is coupled to the seat 20 so as to be movable in the longitudinal direction of the pipe 10, and the pipe 10 can be transported by the vise 30. Thereafter, the compression plate 32 of the vise 30 is separated from the pipe 10, so that the fixing with the side of the pipe 10 can be released. Further, the vise 30 can be returned to its initial position.

1 and 3, when the pipe 10 is positioned at the cutting position of the cut portion 70, one end of the pipe 10 is contact-supported by the end fixing portion 40, and the additional pipe 10 Is limited. On the other hand, the end fixing portion 40 can support one side lower portion of the pipe 10. As a result, the end fixing portion 40 can inhibit one side movement in the longitudinal direction of the rotating pipe 10 during cutting. Here, 'support' means support in the longitudinal direction of the pipe 10, and the end fixing part 40 may include a rotation part 40a which rotates in conjunction with the rotation of the pipe 10 . On the other hand, the end fixing portion 40 can be spaced from the pipe 10 so that the cut pipe 10 is transferred. For this purpose, the end fixing portion 40 may include a cylinder device 40b capable of raising and lowering the rotation portion 40a. Accordingly, the end fixing part 40 supports one side lower part of the pipe 10 when the pipe 10 is cut. When the pipe 10 is cut, the end fixing part 40 can be lowered and separated from the pipe 10.

The pipe 10 can be fed from the seating part 20 and can be seated in the first rotary part 50 at the cutting position. The first rotating part 50 supports the lower part of the pipe 10 and can rotate the pipe 10. [ Here, the first rotating part 50 may include a first receiving part 52 and a second receiving part 54. The first supporting roller 52a can be rotated about the first supporting part rotating shaft 52b and the second supporting roller 54a can rotate about the second supporting part rotating shaft 54b. The first support roller 52a and the second support roller 54a support the lower both sides of the pipe 10 and can be in contact with the pipe 10. [ The pipe 10 can be rotated by interlocking with the rotation of the first receiving portion 52 and the second receiving portion 54. In order to achieve such interlocking more stably, the outer surface may be provided with irregularities for increasing the frictional force between the first support roller 52a and the second support roller 54a and the outer surface of the pipe 10. [

The second rotary part 60 and the cut part 70 may be located on the upper side of the pipe 10. The second rotating portion 60 and the cut portion 70 can be lowered to the pipe 10 side by the supporting portion 90. [ The support portion 90 may include a cylinder device that allows the second rotation portion 60 and the cut portion 70 to be raised and lowered. The supporting portion 90 can move the second rotating portion 60 and the cut portion 70 to match the diameter of the pipe 10 so that the pipe 10 having various diameters can be cut. The second rotating portion 60 and the cut portion 70 can be brought into contact with the outer surface of the pipe 10.

The cutting portion 70 for cutting the pipe 10 may be formed in a strip shape. That is, the cut portion 70 may be formed in a band saw shape. The band saw may be in the form of a band-like unidirectional sawtooth connected at its both ends, and may be wound around the outer circumferential surface of the power transmission portion 80. The power transmitting portion 80 can be rotated so that the cut portion 70 wound on the outer circumferential surface thereof can be linearly moved at the cut portion of the pipe 10. [ Thus, the pipe 10 can be cut with the cutting portion 70 in contact with the pipe 10. On the other hand, during the cutting process, the pipe 10 is rotated by the rotation of the first rotary part 50, so that the cut part 70 can contact and cut the entire outer periphery of the pipe 10. On the other hand, in the portion where the cutting portion 70 comes into contact with the pipe 10 to cut the pipe 10, the moving direction of the cut portion 70 and the rotating direction of the pipe 10 and the second rotating portion 60 are the same It may or may not be. 4, the movement direction of the cut portion 70 may be right or left on the upper side of the pipe 10. Further, in the process of cutting the pipe 10 by the cut portion 70, the cut portion 70 can be moved in the direction of the center of the pipe 10. Since the entire outer periphery of the pipe 10 being rotated passes through the portion where the cut portion 70 and the pipe 10 are in contact with each other, the cut portion 70 is located at the center of the pipe 10, The cutting of the pipe 10 can be completed even if it is lowered to the thickness. Here, the thickness of the pipe 10 itself may correspond to 1/2 of the difference between the inner diameter and the outer diameter of the pipe 10.

The second rotating portion 60 may be located above the pipe 10, away from the cut portion 70. During the process of cutting the pipe 10, the pipe 10 and the second rotating part 60 are rotated together with each other, so that the pipe 10 may be vibrated or shaken. Such vibration or rocking may delay the cutting operation of the pipe 10 or make the cut surface irregular. The cut surface and the cut length of the pipe 10 become uneven, which may degrade the quality and lower the reliability of the product. In order to prevent this, the second rotating portion 60 may be fixed to the pipe 10 by contacting the upper portion of the pipe 10 so as to suppress movement and fluctuation of the pipe 10. To this end, the second rotary part 60 can prevent vibrations or fluctuations of the pipe 10 by contacting the upper side of the pipe 10 before or simultaneously with the cutting of the pipe 10 by the cutting part 70 . The second rotating part 60 may be rotated together with the pipe 10 including the rotating roller 60a and further the second rotating part 60 may be provided to press the pipe 10, The contact between the second rotating portion 60 and the pipe 10 can be further improved. Meanwhile, the second rotating part 60 is lowered when the pipe 10 is cut to support the pipe 10, and when the pipe 10 is cut off, the second rotating part 60 may rise again and be separated from the pipe 10. To this end, the second rotary part 60 may be supported and supported by the supporting part 90 like the cut part 70. Needless to say, the present invention is not limited thereto, and the second rotating part moving part 92 may be provided so that the second rotating part 60 can be moved by a separate supporting part 90.

4 is a view for explaining the rotation directions of the pipe 10, the first rotation part 50 and the second rotation part 60 except for the cut part 70. As shown in Fig. The pipe 10 can be rotated by the rotation of the first rotary part 50. When the first rotary part 50 is rotated in the counterclockwise direction R1R, (PR). Meanwhile, the second rotary part 60 supporting the upper part of the pipe 10 may be rotated in the counterclockwise direction R2R in conjunction with the clockwise (PR) rotation of the pipe 10. The second rotating part 60 can be moved in the vertical direction v and can be provided so that the second rotating part 60 can press the pipe 10 when the pipe 10 is in contact with the second rotating part 60. [ On the other hand, in order to increase the frictional force between the pipe 10 and the rotating roller 60a of the second rotating part 60, a concave-convex shape may be formed on the outer surface of the rotating roller 60a. The irregularities can be formed in a direction in which the pipe 10 and the second rotation part 60 are interlocked and rotated.

In the above description, the first rotation part 50 is rotated in the counterclockwise direction R1R and the pipe 10 is rotated in the clockwise direction. However, the present invention is not limited to this, and the first rotation part 50 And the pipe 10 can be rotated in the counterclockwise direction.

5 to 7, concave and convex portions formed on the outer surface of the rotating roller 60a of the second rotating portion 60 will be described in detail. Referring to FIG. 5, the second rotary part 60 is rotated in the counterclockwise direction (R2R). In this case, threads may be formed in the direction of rotation so as to provide unevenness. By the continuous formation of the threads 66, a threaded bore 68 is formed therebetween, so that the thread 66 and the threaded bore 68 can be formed in a repeated shape. The thread 66 may be formed in the opposite direction on the side of the cut portion of the pipe 10. That is, it may be formed along the outer peripheral surface of the rotary roller 60a from the A side to the B side shown in Fig. Here, the A side is the side where the end fixing portion 40 for restricting the movement of the pipe 10 is located, and the B side can mean the opposite side. For this purpose, the thread 66 may be formed to be inclined from the A side to the B side. By forming the thread 66 in this manner, the pipe 10 can receive the thrust in the A-direction TR during contact rotation between the pipe 10 and the rotating roller 60a. Specifically, when the pipe 10 is rotated in the clockwise direction PR in contact with the thread 66 of the rotating roller 60a, the rotating roller 60a is rotated in the counterclockwise direction R2R.

At this time, the portion where the pipe 10 and the rotating roller 60a come into contact with each other is inclined from the A side to the B side so that the A side direction TR (thrust force) is generated by the component of the frictional force with the rotating roller 60a applied to the pipe 10 . Due to the generation of such thrust, the pipe 10 can be stably positioned in the A-direction TR. Therefore, it is possible to prevent the pipe 10 from being completely fixed in the longitudinal direction by the end fixing portion 40 during the rotation of the pipe 10 due to the rotation of the first rotating portion 50, have. This makes it possible to precisely cut the pipe 10 and increase the process efficiency. However, the present invention is not limited to this, and the spiral direction of the second rotation part 60 may be the same as the rotation direction of the second rotation part 60 Can be changed according to the rotation direction.

Needless to say, the irregularities of the rotary roller 60a may be formed in a shape other than the shape of the thread 66. [ For example, referring to FIGS. 6 and 7, a plurality of protrusions 66 'and 66' 'may be formed on the outer surface of the uneven rotation roller 60a. The protrusions 66 'shown in Fig. 6 can be arranged and arranged along the outer circumferential surface of the rotary roller 60a while moving from the A side to the B side like the screw 66 in Fig. 5, But may be arranged along the shape of the ring on the outer periphery (i.e., not tilted). Each of the projections 66 'is formed so as to be inclined from the A side to the B side so that the pipe 10 in contact with the rotating roller 60a can be provided with a thrust force in the A direction TR have. 6 may be arranged in the same manner as the protrusion 66 'shown in FIG. 6, but unlike the protrusion 66' of FIG. 6, the protrusion 66 ' 'May have a curved shape when it is formed to be inclined from the A side to the B side.

One embodiment of the present invention relates to a pipe cutter (1), which can support the upper and lower portions of the pipe (10) to cut the rotating pipe (10). The lower part of the pipe 10 can support the first rotating part 50 and the upper part of the pipe 10 can rotate and support the second rotating part 60. The end portion in the longitudinal direction of the pipe 10 can be supported by the end fixing portion 40 and the second rotation portion 60 can provide the thrust to the end fixing portion 40 side of the pipe 10 . Therefore, when the pipe 10 is cut by the pipe cutter 1 according to the embodiment of the present invention, the pipe 10 is fixedly supported or rotatably supported both in the axial direction and the radial direction to move and swing the pipe 10 . In addition, since the pipe 10 is rotated during cutting, the time for cutting the pipe 10 can be shortened. In addition, it can be cut accurately and quickly at regular intervals.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

1: pipe cutter
10: pipe
20:
22: Feed roller
30: Vice
32:
40:
40a:
40b: cylinder device
50:
52:
52a: first support roller
52b: first base portion rotation axis
54: second support portion
54a: second support roller
54b: second receiving portion rotating shaft
60:
60a: rotating roller
66: Threaded
68: Screwball
70:
80: Power transmission unit
90: Support
92: second rotating part moving part

Claims

In a pipe cutter,
A seating part on which the pipe is seated;
A first rotating part for supporting a lower side of the pipe and capable of rotating the pipe;
An end fixing part located at one end of the pipe and capable of fixing the pipe;
A cutting portion for cutting the pipe; And
And a second rotating part located at an upper portion of the pipe and capable of supporting the rotation of the pipe, wherein the second rotating part has a concavo-convex shape on an outer surface thereof.

The method according to claim 1,
And the second rotating portion supports to suppress movement and fluctuation of the pipe.

The method according to claim 1,
And the projections and depressions of the second rotating portion provide a thrust to the pipe toward the end fixing portion.

The method according to claim 1,
Wherein the irregularities of the second rotating portion are formed in a shape in which the thread and the thread are repeatedly formed.

The method according to claim 1,
And the second rotating portion is capable of advancing and retracting toward the pipe.

The method according to claim 1,
Wherein the concavity and convexity of the second rotating portion are formed to be inclined corresponding to the rotating direction of the pipe.

The method according to claim 1,
Further comprising a vise coupled to the seating portion and capable of moving the pipe to a cutting position of the cutout.

The method according to claim 1,
Wherein the mounting portion is movable up and down and the pipe is seated and transported to the raised mounting portion and then is positioned at a cutting position of the cutting portion by the descent of the mounting portion.