KR101235827B1 - Pipe expanding tool - Google Patents
Pipe expanding tool Download PDFInfo
- Publication number
- KR101235827B1 KR101235827B1 KR1020100107004A KR20100107004A KR101235827B1 KR 101235827 B1 KR101235827 B1 KR 101235827B1 KR 1020100107004 A KR1020100107004 A KR 1020100107004A KR 20100107004 A KR20100107004 A KR 20100107004A KR 101235827 B1 KR101235827 B1 KR 101235827B1
- Authority
- KR
- South Korea
- Prior art keywords
- mandrel
- tube
- jaw
- frame
- collar member
- Prior art date
Links
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
An object of the present invention is to provide an expansion pipe tool capable of preventing rotation of the member to be expanded and diameter expansion. An expander frame 30 which holds the roller 20 and is rotatably inserted into the tube TU (the tube member); A mandrel 40 inserted into the expander frame 30 and having a tapered portion 41 having a small diameter in the front thereof; The expansion pipe tool 1 provided with the rotation prevention mechanism 50 of the tube TU, The rotation prevention mechanism 50 includes the collar member 51 into which the tube TU is inserted; A jaw 52 disposed in the collar member 51 and advancing in association with the mandrel 40; a tapered portion 51b having a small diameter in the front is formed on the inner circumferential surface of the collar member 51, By advancing the mandrel 40, the jaw 52 is pushed inward in the radial direction by the tapered portion 51 of the collar member 51, and the rollers 41 are tapered by the tapered portion 41 of the mandrel 40. 20) is pushed outward in the radial direction.
Description
The present invention relates to an expansion tool for expanding the diameter of a member to be expanded from the inside.
Generally in the manufacturing process of heat exchangers, such as a boiler, a capacitor | condenser, and a radiator, as an expansion tool for joining a tube (expansion pipe member) to a tube plate, a tube is press-welded to a tube plate by expanding a tube from inside in the hole part of a tube plate. (For example, refer patent document 1).
In such an expansion tool, a plurality of rollers are rotatably held on a concentric circle, and each roller is pushed outward by advancing the mandrel. Then, the tube is expanded by rolling while each roller presses the inner circumferential surface of the tube.
In the above-mentioned conventional expansion pipe tool, when each roller rolls the inner peripheral surface of a tube, there exists a possibility that a tube may rotate together with each roller. Therefore, there is a problem that the operator operating the expansion tool and the operator holding the tube so as not to rotate need to work jointly and the expansion work becomes complicated.
An object of this invention is to provide the expansion tool which can solve the above-mentioned problem, and can prevent rotation of a to-be-expanded member and enlarge a diameter by one.
In order to solve the above problems, the present invention is a cylindrical expander frame rotatably holding a plurality of rollers on a concentric circle, rotatably inserted into the member to be piped; A mandrel slidably and rotatably inserted into the expander frame and having a tapered portion whose front side is a small diameter; An expansion pipe tool comprising: a cylindrical collar member into which the piped member is inserted; A jaw disposed between an inner circumferential surface of the collar member and an outer circumferential surface of the to-be-expanded member, and having a jaw moving forward in conjunction with the mandrel, wherein the inner circumferential surface of the collar member has a tapered portion having a small diameter in front of the collar member. And the mandrel is advanced relative to the collar member and the expander frame such that the jaws are pushed inwards in the radial direction of the collar member by a tapered portion of the collar member, and the jaws contact the outer circumferential surface of the pipe member. In addition, the taper portion of the mandrel is characterized in that the rollers are pushed outward in the radial direction of the expander frame.
In this configuration, by advancing the mandrel, the jaws are in contact with the outer circumferential surface of the member to be piped, the member to be fixed is fixed to the collar member of the fixed system, and each roller is pressed against the inner circumferential surface of the member to be piped. Therefore, it is possible to prevent rotation of the member to be expanded and increase in diameter with one tool, and workability can be improved because there is no need to arrange an operator to hold the member to be rotated so as not to rotate.
In the expansion tool, the rotation preventing mechanism, the clamp frame in contact with the jaw; A cylindrical stopper rotatably holding a rear portion of the mandrel; A first elastic member provided between the collar member and the clamp frame; When it has a 2nd elastic member provided between the said clamp frame and the said stopper; It is preferable to make the elastic force of the said 1st elastic member smaller than the elastic force of the said 2nd elastic member.
In this configuration, when the mandrel and the stopper are advanced, the first elastic member first contracts to move the jaw forward together with the clamp frame, and the member to be piped is fixed by the jaw. Thereafter, the second elastic member contracts and the mandrel is further advanced, whereby each roller can be pressed against the inner peripheral surface of the member to be piped. In this way, since the rotation of the member to be piped is prevented in advance, the rotation of the member to be piped can be reliably prevented.
In the expansion tool, when the first elastic member is provided between the collar member and the rear portion of the clamp frame, and the first elastic member is arranged to surround the outer periphery of the front portion of the expander frame, The space can be effectively used, and the entire tool can be compactly formed.
In the expansion tool of the present invention, since the member to be piped is fixed to the collar member of the fixed system by advancing the mandrel, and each roller is pressed against the inner circumferential surface of the member to be piped, one tool prevents rotation and diameter of the piped member. The workability can be improved.
BRIEF DESCRIPTION OF THE DRAWINGS It is a side sectional view which shows the expansion tool of this embodiment.
It is a figure which shows the expansion tool of this embodiment, (a) is AA sectional drawing of FIG. 1, (b) is the figure explaining the feed angle of a roller.
3 is a view showing a state in which the jaw does not contact the tube in the rotation preventing mechanism of the present embodiment, where (a) is a side cross-sectional view and (b) is an axial cross-sectional view.
4 is a view showing a state in which the jaw is in contact with the tube in the rotation preventing mechanism of the present embodiment, (a) is a side cross-sectional view, and (b) is an axial cross-sectional view.
Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
The
The
In this embodiment, the front end side (left side of FIG. 1) of the
The
In addition, the front surface of the
The
The
The number and arrangement of the
As shown in (b) of FIG. 2, the
As shown in FIG. 1, the
In the front part of the
In addition, a
In the state where the
Then, as shown in (a) of FIG. 2, when the
When the
Moreover, when the
In this way, the front part of the
As shown in FIG. 1, the
The
The
The inner diameter of the
In addition, the
A plurality of
In the embodiment, as shown in Fig. 3A, three
In addition, although three
The inner surface of the
As shown in FIG. 3A, when the
The area where the
As shown in FIG. 1, the
Further, at the center of the front end face of the clamp frame 53 (
Thus, when the
A first
The 1st
A
The rear portion of the
The
In the rear end opening portion of the
When the
In the rear part of the
The
A
The collar
The
In addition, behind the collar
Then, by rotating the collar
In this way, the collar
The stopper 54 is a cylindrical member having a rear portion of the
The second elastic member 57 is provided between the rear end surface of the
In this embodiment, the elastic force (spring constant) of the 1st
Next, the diameter reduction operation of the tube TU using the
First, the
As shown in FIG. 3A, the front part of the
When the power tool is driven in this state and the power tool is moved forward while the
At this time, since the elastic force (spring constant) of the first
As shown in FIG. 4A, when the
When the front end surface of the
As shown in FIG. 2A, the
In this way, the
In addition, when the
In the
Further, when the
Further, by arranging the first
As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, A change is possible suitably in the range which does not deviate from the meaning.
For example, in the present embodiment, as shown in Fig. 4A, the
In addition, although the 1st
1 expansion tool
20 rollers
21 Taper part of roller
30 expander frames
40 mandrel
41 taper of mandrel
50 anti-rotation mechanism
51 color parts
51a inner circumference of the collar member
Tapered part of 51b collar member
52 Ja
52a chibu
52b Jaw Taper
53 clamp frame
53a small diameter
53b large diameter
53d recess
53e protrusion
54 stopper
55 collar rear wheels
55d lock nut
56 first elastic member
57 second elastic member
60 covers
70 spring cover
P tube sheet
P1 hole
TU tube (without pipe)
Inner circumference of the TU1 tube
Circumferential surface of TU2 tube
Claims (3)
A mandrel slidably and rotatably inserted into the expander frame and having a tapered portion whose front side is a small diameter;
An expansion pipe tool, comprising: an anti-rotation mechanism of the pipe member
The rotation prevention mechanism,
A cylindrical collar member into which the member to be piped is inserted;
A jaw disposed between an inner circumferential surface of the collar member and an outer circumferential surface of the member to be piped;
A clamp frame contacting the rear end surface of the jaw;
And a cylindrical stopper rotatably holding a rear portion of the mandrel,
When the mandrel and the stopper are advanced, the stopper pushes the clamp frame so that the jaw advances in conjunction with the mandrel,
On the inner circumferential surface of the collar member, a tapered portion having a small diameter in front is formed,
By advancing the mandrel and the stopper relative to the collar member and the expander frame,
By the taper of the collar member, the jaw is pushed inward in the radial direction of the collar member, and the jaw is in contact with the outer circumferential surface of the member to be piped,
And the taper portion of the mandrel pushes each roller outward in the radial direction of the expander frame.
The rotation prevention mechanism,
A first elastic member provided between the collar member and the clamp frame;
A second elastic member provided between the clamp frame and the stopper;
An expansion force of the first elastic member is smaller than an elastic force of the second elastic member.
And the first elastic member is provided between the collar member and the rear portion of the clamp frame and surrounds the outer circumference of the front portion of the expander frame.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPJP-P-2010-107257 | 2010-05-07 | ||
JP2010107257A JP5113878B2 (en) | 2010-05-07 | 2010-05-07 | Tube expansion tool |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20110123647A KR20110123647A (en) | 2011-11-15 |
KR101235827B1 true KR101235827B1 (en) | 2013-02-21 |
Family
ID=44884787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020100107004A KR101235827B1 (en) | 2010-05-07 | 2010-10-29 | Pipe expanding tool |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP5113878B2 (en) |
KR (1) | KR101235827B1 (en) |
CN (1) | CN102233388B (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101423081B1 (en) | 2013-07-08 | 2014-07-24 | 주식회사 하이스텐 | pipe expanding zig |
TWI572423B (en) * | 2014-05-08 | 2017-03-01 | Zhen-Ci Lin | The structure of the pipe expander |
EP3338880A1 (en) * | 2016-12-23 | 2018-06-27 | Gedore-Werkzeugfabrik GmbH & Co. KG | Method and tool for dismantling a filter element from a conduit |
KR101978478B1 (en) * | 2017-06-14 | 2019-05-14 | 주식회사 상봉코포레이션 | Apparstus for manufacturing composite hose and composite hose manufactured by the apparatus |
CN108941341B (en) * | 2018-08-28 | 2024-01-16 | 航珍航空技术(上海)有限公司 | Non-flaring catheter internal rotation extrusion molding machine |
CN108941342B (en) * | 2018-08-28 | 2024-08-09 | 航珍航空技术(上海)有限公司 | Internal rotation extrusion forming machine |
JP7174649B2 (en) * | 2019-02-27 | 2022-11-17 | 株式会社スギノマシン | Automatic tube expansion device, automatic tube expansion method and expander exchange method |
KR102144120B1 (en) * | 2020-07-08 | 2020-08-12 | 주식회사 이앤아이비 | Fluororesin tube flaring tool |
KR102686088B1 (en) * | 2022-01-21 | 2024-07-19 | 주식회사 오성테크 | Expanding apparatus of hemispherical cooling bush for die-casting mold |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5046745U (en) | 1973-08-27 | 1975-05-09 | ||
JP2000218414A (en) * | 1999-02-02 | 2000-08-08 | Shisutekku Kk | Collet chuck joint device |
JP2007061889A (en) | 2005-09-02 | 2007-03-15 | Sugino Mach Ltd | Tube expansion tool |
JP2007229766A (en) * | 2006-03-01 | 2007-09-13 | Sugino Mach Ltd | Tube expanding apparatus |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3854314A (en) * | 1973-07-25 | 1974-12-17 | Dresser Ind | Step controlled tube expander |
JPS50146745U (en) * | 1974-05-21 | 1975-12-05 | ||
CN2353464Y (en) * | 1998-12-02 | 1999-12-15 | 叶岳瑞 | Ball-type tube expander for metal racket frame |
CN1110383C (en) * | 1999-03-18 | 2003-06-04 | 武湘川 | Tube expanding machine and process |
US8746028B2 (en) * | 2002-07-11 | 2014-06-10 | Weatherford/Lamb, Inc. | Tubing expansion |
-
2010
- 2010-05-07 JP JP2010107257A patent/JP5113878B2/en not_active Expired - Fee Related
- 2010-10-29 KR KR1020100107004A patent/KR101235827B1/en not_active IP Right Cessation
- 2010-12-01 CN CN 201010568466 patent/CN102233388B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5046745U (en) | 1973-08-27 | 1975-05-09 | ||
JP2000218414A (en) * | 1999-02-02 | 2000-08-08 | Shisutekku Kk | Collet chuck joint device |
JP2007061889A (en) | 2005-09-02 | 2007-03-15 | Sugino Mach Ltd | Tube expansion tool |
JP2007229766A (en) * | 2006-03-01 | 2007-09-13 | Sugino Mach Ltd | Tube expanding apparatus |
Also Published As
Publication number | Publication date |
---|---|
KR20110123647A (en) | 2011-11-15 |
JP2011235298A (en) | 2011-11-24 |
JP5113878B2 (en) | 2013-01-09 |
CN102233388B (en) | 2013-09-25 |
CN102233388A (en) | 2011-11-09 |
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