KR101642245B1 - Forming apparatus for pipe flare - Google Patents

Forming apparatus for pipe flare Download PDF

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Publication number
KR101642245B1
KR101642245B1 KR1020160005259A KR20160005259A KR101642245B1 KR 101642245 B1 KR101642245 B1 KR 101642245B1 KR 1020160005259 A KR1020160005259 A KR 1020160005259A KR 20160005259 A KR20160005259 A KR 20160005259A KR 101642245 B1 KR101642245 B1 KR 101642245B1
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KR
South Korea
Prior art keywords
pipe
moving
jig
stopper
forming
Prior art date
Application number
KR1020160005259A
Other languages
Korean (ko)
Inventor
천성민
이덕희
Original Assignee
두성산업 (주)
천성민
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 두성산업 (주), 천성민 filed Critical 두성산업 (주)
Priority to KR1020160005259A priority Critical patent/KR101642245B1/en
Application granted granted Critical
Publication of KR101642245B1 publication Critical patent/KR101642245B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B21D19/082—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles
    • B21D19/086—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles with rotary cams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging
    • B21D41/026—Enlarging by means of mandrels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

The present invention relates to a pipe flare forming apparatus, and more particularly, to a pipe flare forming apparatus for forming a flange integrally by expanding an end of a pipe, wherein the forming apparatus includes a fixing jig provided on the base frame for clamping and fixing the pipe, Jig; A moving block movably provided on the base frame and moved toward the jig; A rotating shaft rotatably provided in the moving block; A rotating motor provided in the moving block for rotationally driving the rotating shaft; A pin bushing fixedly coupled to an end of the rotary shaft; And a forming pin which is inserted and fixed in the pin bushing and has a cone portion inserted into an end portion of the pipe at an end thereof to eccentrically rotate and expand the end portion of the pipe to integrally form the flange.

Description

[0001] FORMING APPARATUS FOR PIPE FLARE [0002]

The present invention relates to a pipe flare forming apparatus, and more particularly, to a pipe flare forming apparatus for integrally forming a flange projecting outward at an end of a pipe by expanding an end of the pipe.

In general, pipes are hollow, elongated tubes, mainly used for the transport of fluids (gases, liquids) and powders. That is, the pipe is usually used as a metal pipe file used as a building material, or as a traveling path for supplying fuel to an engine such as a ship.

Such a pipe is generally used by connecting a plurality of pipes. In this case, the connection between the pipes is usually carried out through a disc-shaped flange having a constant thickness.

Such a conventional flange is formed of a circular plate having a predetermined thickness and is formed with a coupling hole for fitting a pipe at the center and a plurality of fastening holes are formed at the edges of the coupling hole so that the flanges are mutually fastened when the pipe is connected. The pipe and the flange are fixedly coupled with each other by welding through the fitting hole, and the fixed flange is interlocked with the flange of the other pipe to connect the pipe and the pipe.

However, since the flange of this conventional flange is coupled to the one end of the pipe only by welding, the rigidity of the welded portion is weak, and damage such as cracks is caused by external impact or pressure.

In order to overcome such disadvantages, in the past, "Flaring Expansion Period" was proposed in Korean Patent Laid-Open No. 10-2009-0118214 (hereinafter referred to as "Prior Art Document 1").

The flare expanding unit of the proposed prior art document 1 includes a flare bar, a fixed handle, a body, a handle, a feed bar, and an expanded cone, the flare bar is divided into two, and a plurality of holes Respectively. The body holds the conveyor belt, and the fixing handle of the body fixes the copper tube to the flare bar. The handle allows the transfer table to move in the vertical direction. Further, the conveying table is formed with threads around the body, and the cone cone is connected to the lower portion of the conveying table.

In the flare ringing operation using the flare ring expanding machine, a copper tube to be flared is inserted into an appropriate hole in the flare bar, a copper tube is fixed to the flare bar using a fixing handle of the body, and then the handle is rotated When the feed bar is transported downward, the expansion cone connected to the lower part of the feed bar squeezes the end of the pipe to perform the flare operation.

However, in the conventional flaring expansion unit disclosed in the prior art document 1, in the case of a flexible pipe such as a copper pipe, the expanded cone can be pressed to the end of the pipe to form the outwardly protruding flange. However, It is very difficult to form the flange only by the squeezing of the expanding cone and there is a problem that when the expanding cone is squeezed with excessive force, the end of the pipe is torn and broken.

The flaring expansion unit as described above and the technology therefor are described in detail in the following prior art documents, and a detailed description thereof will be omitted.

Korean Patent Laid-Open No. 10-2009-0118214

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method of manufacturing a pipe having a flange extending outwardly from an end of a pipe by eccentrically rotating a forming pin, It is an object of the present invention to provide a pipe flare forming apparatus that can be integrally formed.

In order to achieve the above object, a pipe flare forming apparatus according to the present invention is a pipe flare forming apparatus for forming a flange integrally by expanding an end of a pipe, wherein the forming apparatus is provided on a base frame, A fixed jig and a moving jig; A moving block movably provided on the base frame and moved toward the jig; A rotating shaft rotatably provided in the moving block; A rotating motor provided in the moving block for rotationally driving the rotating shaft; A pin bushing fixedly coupled to an end of the rotary shaft; And a forming pin which is inserted and fixed in the pin bushing and has a cone portion inserted into an end portion of the pipe at an end thereof to eccentrically rotate and expand the end portion of the pipe to integrally form the flange.

An eccentric hole eccentric to the axis of the rotating shaft is formed inside the pin bushing. The forming pin is inserted into the pin bushing, and the eccentric hole and the axis of the pin bushing coincide with each other. Or the like.

The base frame is provided with a stopper stopping the pipe inserted between the stationary jig and the moving jig, and the stopper can be movably provided on the base frame and moved by the moving block.

The movable block is provided with a movable bar for moving the stopper while moving along with the movable block. The stopper is rotatably provided with a roller to which the moving bar of the moving block is rotatable. The movable bar contacting the roller of the stopper includes a roller A curved portion for moving the stopper may be formed.

According to the pipe flare forming apparatus of the present invention, when the cone portion of the forming pin is inserted into the end portion of the pipe fixed by the fixing and moving jig, the forming pin is eccentrically rotated so that the flange, There is an advantage that the expanded flange can be formed quickly and precisely at the end of the pipe irrespective of the material of the pipe.

According to the present invention, since the end of the pipe inserted between the fixing jig and the moving jig is held by the stopper, the pipe is always fixed by the jig at a fixed position and is subjected to flare processing, So that the quality of the product can be improved.

1 is a front view of a pipe flare forming apparatus according to the present invention.
2 is a plan structural view of a pipe flare forming apparatus according to the present invention.
Fig. 3 is a view showing a combined structure of a driving unit for driving a forming pin according to the present invention.
4 is an exploded view of a driving unit according to the present invention.
Fig. 5 is an enlarged view of the main part showing the coupling structure of the forming pin according to the present invention.
6 is a view showing a flange of a pipe which is expanded and formed by driving a forming pin according to the present invention.
7 to 10 are process drawings showing an operation process of the pipe flare forming apparatus according to the present invention.

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

The terms used in the present invention are defined in consideration of the functions of the present invention and may vary depending on the intention or custom of the user or the operator. Therefore, the definitions of these terms are meant to be in accordance with the technical aspects of the present invention As well as the other.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention and are incorporated in and constitute a part of this specification. Embodiments that include components replaceable as equivalents in the components may be included within the scope of the present invention.

In addition, optional terms in the following embodiments are used to distinguish one element from another element, and the element is not limited by the terms. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.

1 to 10 are views showing a pipe flare forming apparatus according to the present invention.

1 and 2, a pipe flare forming apparatus 100 according to the present invention includes jigs 190 and 191 provided on a base frame 110 to clamp and fix a pipe 1, And a moving block 150 movably provided on the base frame 110 facing the jigs 190 and 191 to expand the end of the pipe 1 to integrally mold the flange 2.

The base frame 110 includes a plurality of vertical frames and a horizontal frame interconnected to each other, and a flat workbench 120 is provided on the upper surface thereof.

The lower end of the base frame 110 is provided with a caster 111 which facilitates the movement of the base frame 110. The lower end of the base frame 110 adjacent to the caster 111 has a height And a base plate 112 for fixing the base frame 110 to the floor surface while being adjusted.

A pair of guide rails 130 for guiding a moving block 150 to be described later to the jigs 190 and 191 are provided on the upper surface of the workbench 120. The workbenches 120 Is provided with a pair of guide rails 131 positioned in a direction perpendicular to the guide rail 130 and guiding a stopper 193 to be described later.

A movable block 150 is provided at one end of the upper surface of the work table 120 so as to be movable toward the jigs 190 and 191 to be described later by a guide rail 130, A transfer cylinder 140 for reciprocating the block 150 is provided.

A rod 141 is provided at the distal end of the transfer cylinder 140 so as to be able to move in and out and a distal end of the rod 141 is fixedly coupled to the rear end of the movable block 150.

Accordingly, as the rod 141 is moved in and out of the transfer cylinder 140, the moving block 150 reciprocally moves forward or backward on the work table 120 toward the jig 190 or 191 side.

3 and 4, a rotating shaft 160 is rotatably mounted on the moving block 150 and a rotating motor 160 for rotating the rotating shaft 160 is mounted on the upper surface of the moving block 150 The pulley 152 of the rotary motor 151 driven by the rotary motor 151 and the rear end of the rotary shaft 160 are connected to each other as a belt 153 and interlocked with each other. The front end of the rotary shaft 160 is disposed outside the front surface of the moving block 150.

A hollow pin bushing 170 is fixedly coupled to the tip of the rotary shaft 160 and the pin bushing 170 is formed with an eccentric hole 171 whose inside is eccentric. The pin bushing 170 is coupled to the distal end of the rotary shaft 160 in a state where the center line of the pin bushing 170 coincides with the axial line of the pin bushing 170 so that the eccentric hole 171 is disengaged from the axis of the rotary shaft 160, do.

The forming pin 180 is inserted into the eccentric hole 171 of the pin bushing 170 through the thrust bearing 172 and the forming pin 180 is inserted into the eccentric hole 171 of the pin bushing 170, A cone portion 181 for forming the expanded flange 2 is formed.

5 and 6, the forming pin 180 is inserted into the eccentric hole 171 of the pin bushing 170 in a state where the axes thereof are aligned with each other, And is provided in an eccentric state off-axis.

6, when the rotary shaft 160 rotates, the pin bushing 170 rotates in the same direction as the rotary shaft 160, but the forming pin 180 provided in the eccentric hole 171 of the pin bushing 170 is rotated The end of the pipe 1 is enlarged while being rotated eccentrically as much as the Shenyang.

Particularly, the amount of eccentricity of the forming pin 180, which is eccentrically rotated as described above, can be adjusted by replacing the pin bushing 170 coupled to the rotating shaft 160. Thus, 1 can be formed by differently forming the flange 2,

A moving bar 150a further protruding from the forming pin 180 is provided at the distal end of the moving block 150 and a roller 194 of a stopper 193 described later is provided at the distal end of the moving bar 150a. A curved portion 150b which is gradually inclined inward from one side of the movement bar 150a is formed to move the stopper 193 in contact with the movable bar 150a.

The moving bar 150a moves forward as the moving block 150 and the curved portion 150b of the leading end of the moving bar 150a contacts the roller 194 of the stopper 193 so that the roller 194 is in contact with the shape of the curved portion 150b And is moved to one side of the work table 120 along the guide rail 131 like the stopper 193.

The stationary jig 190 and the moving jig 191 are provided at the other end of the worktable 120 facing the rotary shaft 160 for clamping and fixing the pipe 1 for flare processing. The fixing jig 190 is fixed on the work table 120 and the moving jig 191 facing the fixing jig 190 is reciprocally moved toward the fixing jig 190 by the cylinder 192 .

The pipe 1 is fixed to the stationary jig 190 and the movable jig 191 in the work station 120 between the jigs 190 and 191 and the moving block 150, A stopper 193 is provided. The stopper 193 is provided on the same line as the clamping portion of the fixing jig 190 to which the pipe 1 is clamped so that the end of the pipe 1 is hooked so that the pipe 1 is always provided in the correct position.

The stopper 193 is movably provided on the work table 120 and is moved along the guide rail 131 of the work table 120.

A rotatable roller 194 is provided on one side of the stopper 193. The roller 194 contacts the one side of the moving bar 150a and moves the stopper 193 while rolling. That is, the roller 194 moves in contact with the curved portion 150b of the moving bar 150a, which is moved, and is pushed toward one side while being in contact with the moving bar 150a having a larger diameter than the curved portion 150b. At this time, the resistance of the stopper 193 can be minimized by rotating the roller 194 in contact with the moving bar 150a.

When the movable block 150 is moved toward the pipe 1 clamped to the stationary jig 190 and the movable jig 191, the curved portion 150b of the movable bar 150a is moved more than the forming pin 180, The forming pin 180 is brought into contact with the end of the pipe 1 after the roller 194 and the stopper 193 are moved while being in contact with the stopper 194, Interference can be avoided.

Meanwhile, the overall operation of the molding apparatus 100 is controlled by the control unit 200 provided on the work table 120.

The operation of the pipe flare forming apparatus according to the present invention will now be described.

When the pipe 1 to be flared is inserted into the fixing jig 190 as shown in FIG. 7, the end of the pipe 1 is hooked on the stopper 193 as shown in FIG. 8, As shown in FIG.

The movable jig 191 is moved to the fixed jig 190 side by the cylinder 192 to clamp and fix the pipe 1 between the two jigs 190 and 191 as shown in Fig.

The transfer block 140 is moved forward along the guide rail 130 on the work table 120 to the side of the pipe 1 clamped to both jigs 190 and 191 by the transfer cylinder 140.

Since the movable bar 150a protrudes longer than the forming pin 180 provided on the movable block 150, the curved portion 150b of the movable bar 150a first contacts the roller 194 of the stopper 193 And the roller 194 is rolled on the curved portion 150b while being rotated.

The roller 194 is rotated by the forward movement bar 150a to move over the movement bar 150a and the movement bar 150a having a larger diameter than the curved portion 150b. The roller 194 and the stopper 193 are pushed toward the one side of the workbench 120 along the guide rail 131. [

After the stopper 193 is released from the pipe 1, the cone portion 181 of the forming pin 180, which is provided at the distal end of the moving block 150 and rotates, is clamped between the jigs 190 and 191 To the end of the pipe (1).

At this time, the forming pin 180 is eccentrically provided by the pin bushing 170 fixed to the rotating shaft 160 of the moving block 150, and is rotated in an eccentric state so that the end of the pipe 1 So that the flange 2 is integrally formed.

After the flare process, the movable block 150 is moved backward, and the stopper 193 is also returned to its original state and is provided adjacent to the stationary jig 190.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

1: Pipe 2: Flange
100: forming device 110: base frame
111: Caster 112:
120: work table 130, 131: guide rail
140: transfer cylinder 141: rod
150: Moving block 150a: Moving bar
150b: a curved portion 151: a rotary motor
152: pulley 153: belt
160: rotating shaft 170: pin bushing
171: eccentric ball 172: bearing
180: forming pin 181:
190: Fixing jig 191: Moving jig
192: cylinder 193: stopper
194: roller 200:

Claims (6)

A pipe flare forming apparatus for integrally forming a flange by expanding an end of a pipe,
The molding apparatus comprises: a fixing jig and a moving jig provided on the base frame for clamping and fixing the pipe;
A moving block movably provided on the base frame and moved toward the jig;
A rotating shaft rotatably provided in the moving block;
A rotating motor provided in the moving block for rotationally driving the rotating shaft;
A pin bushing fixedly coupled to an end of the rotary shaft; And
And a forming pin integrally formed with the flange, wherein the flange is integrally formed by eccentrically rotating the end portion of the pipe while forming a cone portion to be inserted into the end portion of the pipe,
The base frame is provided with a stopper stopping the pipe inserted between the stationary jig and the moving jig. The stopper is provided to be moved on the base frame according to the movement of the movable block,
And a movement bar for moving the stopper while being moved together with the movement block is protruded from the movement block.
The method according to claim 1,
The pin bushing is fixedly coupled to the end portion of the rotary shaft in a state where the axial lines thereof are aligned with each other. An eccentric hole eccentric to the axis of the rotary shaft is formed therein,
Wherein the forming pin is inserted into the pin bushing so that the eccentric hole and the axis of the pin bushing are aligned with each other. delete delete The method according to claim 1,
Wherein a stopper is rotatably provided with a roller to which the moving bar of the moving block is contacted. The method of claim 5,
And a bending portion for moving the stopper is formed in the movement bar in contact with the roller of the stopper.
KR1020160005259A 2016-01-15 2016-01-15 Forming apparatus for pipe flare KR101642245B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160005259A KR101642245B1 (en) 2016-01-15 2016-01-15 Forming apparatus for pipe flare

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Application Number Priority Date Filing Date Title
KR1020160005259A KR101642245B1 (en) 2016-01-15 2016-01-15 Forming apparatus for pipe flare

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109500180A (en) * 2018-12-28 2019-03-22 湖南腾远智能设备有限公司 A kind of tube body end processing equipment
KR102084375B1 (en) * 2019-11-04 2020-03-03 박종철 Apparatus for forming pipe flare

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3793414B2 (en) * 2000-11-24 2006-07-05 本田技研工業株式会社 Caulking method and workpiece dimension measuring device
KR100920953B1 (en) * 2007-07-30 2009-10-09 (주)삼원산업사 expander of bronze pipe
KR20090118214A (en) 2008-05-13 2009-11-18 충주대학교 산학협력단 Flaring expander
KR101126045B1 (en) * 2011-12-09 2012-03-29 (주) 대진유압기계 Flare flange machine
KR101494648B1 (en) * 2013-04-18 2015-02-23 주식회사 위닉스 Pipe expanding device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3793414B2 (en) * 2000-11-24 2006-07-05 本田技研工業株式会社 Caulking method and workpiece dimension measuring device
KR100920953B1 (en) * 2007-07-30 2009-10-09 (주)삼원산업사 expander of bronze pipe
KR20090118214A (en) 2008-05-13 2009-11-18 충주대학교 산학협력단 Flaring expander
KR101126045B1 (en) * 2011-12-09 2012-03-29 (주) 대진유압기계 Flare flange machine
KR101494648B1 (en) * 2013-04-18 2015-02-23 주식회사 위닉스 Pipe expanding device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109500180A (en) * 2018-12-28 2019-03-22 湖南腾远智能设备有限公司 A kind of tube body end processing equipment
CN109500180B (en) * 2018-12-28 2023-09-22 湖南腾远智能设备有限公司 Pipe end treatment equipment
KR102084375B1 (en) * 2019-11-04 2020-03-03 박종철 Apparatus for forming pipe flare

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