KR101520956B1

KR101520956B1 - Pipe bending Method

Info

Publication number: KR101520956B1
Application number: KR1020140043858A
Authority: KR
Inventors: 정순오
Original assignee: 정순오
Priority date: 2014-04-11
Filing date: 2014-04-11
Publication date: 2015-05-15

Abstract

The present invention relates to a pipe bending method with high productivity by continuously forming bends in a zigzag shape on a small diameter pipe. For the purpose mentioned above, the invention comprises: a rotatory body with a first rotating axis and a second rotating axis; a top body located on the top part of the above first and second rotating axis; and a bending device comprising a guide body, which guides a first auxiliary axis and a second auxiliary axis, which lifts and descends in a direction of the above rotatory body. The invention comprises: a step of a pipe leading-in such that the pipe is safely arrived through the guide body between the first rotatory axis and the second rotatory axis; a step of bending the pipe to one direction to descend the first auxiliary axis, and to rotate the above rotatory body counterclockwise, centering the second rotating axis; a one-direction returning step of returning the rotatory body to one direction by lifting the first auxiliary axis, and rotating the rotatory body clockwise, centering the second rotating axis; a pipe for a first transfer stage, transferring the pipe by a certain distance; a step of bending the pipe to the other direction to descend the second auxiliary axis, and to rotate the rotatory body clockwise, centering the first rotating axis; an other-direction returning stage of returning the rotatory body to lift up the secondary auxiliary axis, and to rotate the rotatory body counterclockwise, centering the first rotating axis; and a pipe for a second transfer step, transferring the pipe by a regular distance.

Description

Pipe bending method [0001]

The present invention relates to a pipe bending method, and more particularly, to a pipe bending method for continuously bending a pipe.

Pipes are widely used in the industry as a representative example. In the case of a thermal machine, a fluid moving inside is used for heat exchange with a substance located in the outside. It is widely used.

In the case of a large pipe, a pipe is disposed through a separate connecting port. However, a small diameter pipe having a diameter of about 3 to 8 mm, which is used for a relatively small machine such as a refrigerator or an air conditioner, The pipe is used by bending in a cold state.

The bending of the pipe may be directly performed by a person using a tool, but is generally performed through a dedicated machine.

For example, Japanese Patent Application Laid-Open Publication No. 1999-008111 discloses a bending base body having a molding portion formed by pressing a circular pipe on one side of the bending base body to form a groove on both sides of the pipe, and a bending portion for bending the pipe into a semi- Since the pipe can be formed and bent by a single bending machine, the bending machine can be easily and flexibly set to a desired diameter. .

In addition, the registered utility model 0236024 includes a rotating vise having a fixed vise fixed to one side of a rotating guide body positioned at the front end side of the main body, and a rotating vise rotating at the other side along the rotating guide body, An articulation portion configured to be interlocked with a rotation axis of the upper side rotation roller of the rotation guide body; A first sprocket is formed on the upper and lower sides of the rotating shaft inside the rotation guide body and a second sprocket connected to the first sprocket by a chain is formed on the inside of the body, A driving unit in which a cylinder connected to the chain is formed; And an angle control unit having a position sensing sensor for sensing a position of the moving rod on a slide bar formed along the chain driving direction, the outer rod body being protruded outward from a predetermined position on the chain of the driving unit, .

The above-mentioned prior arts can mechanically perform the bending work which is performed through manual work, and it is advantageous in that the efficiency of the pipe bending process and the quality of the pipe bending portion are kept constant. However, And a new method of efficiently bending a zigzag shape of a small diameter pipe is required in the case of bending a pipe continuously in a zigzag form.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of bending a pipe with high productivity by continuously forming a zigzag bent portion in a small diameter pipe.

In order to achieve the above object, the present invention provides a rotating body including a first rotating shaft, a rotating body including a second rotating shaft, an upper body positioned at an upper end of the first rotating shaft and a second rotating shaft, And a guide member guiding the first auxiliary shaft, the second auxiliary shaft, and the pipe, the method comprising the steps of: passing a pipe through the guide body to seat the pipe between the first rotary shaft and the second rotary shaft A pipe entry step; A one-way pipe bending step of lowering the first sub-shaft and rotating the rotating body in a counter-clockwise direction with respect to the second rotating shaft; A one-way returning step of raising the first auxiliary shaft and rotating the rotating body in a clockwise direction with respect to the second rotating shaft; A first pipe feeding step of feeding the pipe at a constant feed distance; Bending the second auxiliary shaft and rotating the rotating body in a clockwise direction with respect to the first rotating shaft; A second returning step of raising the second auxiliary shaft and rotating the rotating body in a counterclockwise direction with respect to the first rotating shaft to return; And a pipe second feeding step of feeding the pipe at a constant feeding distance.

Preferably, the rotation angle of the rotating body is 180 degrees.

More preferably, the guide body is characterized in that two identical plates are arranged at regular intervals, and a plurality of the pipes are stacked and positioned between the plates.

More preferably, in order to further form the bending of the pipe, a one-directional pipe bending step, a one-direction returning step, a first pipe conveying step, another-direction pipe bending step, another direction returning step, And is repeatedly performed.

More preferably, the transport distance in the pipe first transport step and the pipe second transport step are the same.

The pipe bending method according to the present invention has a relatively simple structure in which a bending portion can be formed precisely when a small diameter pipe is supplied. In particular, a zigzag bent portion in which bending portions are continuously and alternately formed can be easily formed Therefore, there is an effect that a pipe used in a heat exchanger having many zig-zag bent portions can be produced quickly and easily by a single device.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram of a bending apparatus for performing a pipe bending method according to the present invention,
2 is an operational state view of the bending device shown in Fig. 1,
3 is a procedure diagram of a pipe bending method according to the present invention,
Figure 4 is an operational view of some of the procedures in Figure 3,
Figure 5 is an operational view of another of the procedure diagrams of Figure 3,
Figure 6 is an operational view of yet another of the procedure diagrams of Figure 3,
Figure 7 is an operational view of yet another of the procedure diagrams of Figure 3,
Figure 8 is an operational view of yet another of the procedure diagrams of Figure 3,
Figure 9 is an operational view of yet another of the procedure diagrams of Figure 3,
10 is an operational view of still another of the procedure diagrams of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The method for bending a pipe according to the present invention is a method for bending a pipe having a zigzag shape by using two rotation shafts and two auxiliary shafts. As shown in Fig. 1, the rotating body 10, A first rotating shaft 11 vertically formed on an upper surface of the rotating body 10 and a second rotating body 12 vertically formed on the rotating body 10; A first auxiliary shaft 21 and a second auxiliary shaft 22 which are transported in a downward direction of the upper body 20 and are brought into contact with or separated from the support body 10, And a guiding body (30) which is fixed to prevent movement of the guide (1).

The rotating body 10 is selectively rotated about the first rotation axis 11 or the second rotation axis 12 and the first and second auxiliary axes 21 and 22 are selectively rotated Moves downward, completely contacts the upper surface of the rotating body (10), moves completely upward, and operates so that its end is located inside the upper body (20).

The guide body (30) is fixed to the ground, and two plates are arranged to face each other. A pipe (1) is positioned between the plates, and the thickness of the plate is determined by the first rotation axis 2 is equal to or smaller than the diameter of the rotary shaft 12.

The rotating body 10 is rotated at 180 degrees to form a zigzag bent part in the pipe 1, and the rotating shaft is selected and rotated by the first rotating shaft 11 or the second rotating shaft 12.

The operation of the bending device 100 can be described as shown in FIG. 2. In the case where the first or second rotation axis 11 or 12 has a '+' mark, When the first auxiliary shaft 21 or the second auxiliary shaft 22 has a bold mark, the corresponding shaft moves downward so that the upper body 20 and the rotating body 10 correspond to each other Axis. 2 shows that the first sub-shaft 21 is in contact with the upper surface of the rotating body 10 and rotates through the second rotation shaft 12.

Hereinafter, a pipe bending method according to the present invention will be described in detail using the bending device.

3, the pipe bending method according to the present invention includes a pipe pulling step S1, a one-way pipe bending step S2, a one-way returning step S3, a pipe first feeding step S4, Direction pipe bending step S5, another direction returning step S6, and a pipe second transfer step S7.

The above steps represent one cycle in which the zigzag bent portions are formed in both directions, and the additional bending may be performed in S2 to S7 sequentially.

Hereinafter, the above steps will be described in detail.

The pipe entry step (S1)

As shown in FIG. 4, the pipe pull-in step S1 is a step of pulling the pipe 1 after positioning the auxiliary shafts 21 and 22 to the forward direction in the rotating body 10, The shafts 21 and 22 are positioned upwards.

The unidirectional pipe bending step (S2)

After the pipe 1 is drawn in, unidirectional pipe bending step S2 for bending the pipe 1 is performed. The one-direction can be performed by selecting either the counterclockwise direction or the clockwise direction, but it is explained that the counterclockwise direction is rotated first in this step.

In this step S2, as shown in Fig. 5 (a), after the first sub-shaft 21 is transferred downward, it is rotated 180 degrees counterclockwise about the second rotation shaft 12 5 (b).

At this time, since the first auxiliary shaft 21 presses and rotates the pipe 1 at one side, the pipe 1 is bent.

In the one-direction returning step S3,

6 (a), the first subordinate shaft 21 is lowered and rotated 180 degrees in the clockwise direction about the second rotation axis 12, (b). At this time, since the first auxiliary shaft 21 is in an elevated state, no interference with the pipe 1 occurs, and the bent pipe 1 is maintained in a bent state, and the rest of the components are returned to their original state.

In the pipe first transfer step S4,

After the step S3 is completed, a pipe first transfer step S4 for transferring the pipe 1 is performed.

7 (b), the transfer of the pipe 1 is carried out by a separate transferring device, and the transferring distance is changed by the zigzag Set the distance between the bends.

The other-direction pipe bending step (S5)

8 (a), the second sub-shaft 22 is lowered and rotated 180 degrees clockwise about the first rotation shaft 11 to form the second sub- The pipe 1 is further bent in the state of b).

Since the second sub shaft 22 is lowered, the pipe 1 is further bent by being rotated by contacting with one side of the pipe 1.

In the other direction returning step (S6)

As shown in Fig. 9 (a), the first ice-returning step S6 raises the lowered second sub-shaft 22 and rotates 180 degrees counterclockwise about the first rotating shaft 11 9 (b). At this time, since the second auxiliary shaft 22 is in an elevated state, no interference with the pipe 1 occurs, and the zigzag-bent pipe 1 is maintained in a bent state, and the rest of the components are returned to the initial state .

The pipe second transferring step (S7)

The pipe second transfer step S7 transfers the pipe 1 in the state of FIG. 10 (a), is also performed by a separate transfer device, and the transfer distance is set in the same manner as the pipe first transfer step S5 do.

Thereafter, the above steps S2 to S7 are repeated in order to obtain the pipe 1 having the bent portions continuously.

The rotation of the rotating body 10 has been described with reference to 180 degrees. However, in the case of some pipes 1, there are cases where the pipe 1 is initially bent at 90 degrees (other angles are possible) Since the final bending angle may be bent at 90 degrees, the angle may be changed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, And all of the various forms of embodiments that can be practiced without departing from the technical spirit.

1: pipe 10: rotating body
11: first rotating shaft 12: second rotating shaft
20: Phase group 21: 1st auxiliary axis
22: second auxiliary shaft 30: guide body
100: Bending device
S1: Pipe entry step S2: Unidirectional pipe bending step
S3: one direction return step S4: pipe first transfer step
S5: Bending the pipe in the other direction S6: Returning to the other direction
S7: pipe second transfer step

Claims

A rotating body including a first rotating shaft and a second rotating shaft, an upper body positioned at an upper end of the first rotating shaft and a second rotating shaft, a first lower shaft moving up and down in the rotating body direction from the upper body, A pipe bending method using a bending device including a guide body for guiding a pipe,
A pipe drawing step of passing a pipe through the guide body and between the first rotation axis and the second rotation axis;
A one-way pipe bending step of lowering the first sub-shaft and rotating the rotating body in a counter-clockwise direction with respect to the second rotating shaft;
A one-way returning step of raising the first auxiliary shaft and rotating the rotating body in a clockwise direction with respect to the second rotating shaft;
A first pipe feeding step of feeding the pipe at a constant feed distance;
Bending the second auxiliary shaft and rotating the rotating body in a clockwise direction with respect to the first rotating shaft;
A second returning step of raising the second auxiliary shaft and rotating the rotating body in a counterclockwise direction with respect to the first rotating shaft to return; And
And a second conveying step of conveying the pipe at a predetermined conveying distance.

The pipe bending method according to claim 1, wherein the rotation angle of the rotating body is 180 degrees.

The pipe bending method according to claim 2, wherein the guide body has two identical plates arranged at regular intervals, and a plurality of the pipes are stacked and positioned between the plates.

[4] The method of claim 3, further comprising the steps of: a one-direction pipe bending step, a one-direction returning step, a first pipe conveying step, a second direction pipe bending step, another direction returning step, Wherein said step (b) is performed repeatedly.

5. The method of claim 4, wherein the transport distance is the same in the first pipe transport step and the second pipe transport step.