EP2181780A1 - Pipe-bending machine having an improved movement transmission to a bending die - Google Patents

Pipe-bending machine having an improved movement transmission to a bending die Download PDF

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Publication number
EP2181780A1
EP2181780A1 EP09425420A EP09425420A EP2181780A1 EP 2181780 A1 EP2181780 A1 EP 2181780A1 EP 09425420 A EP09425420 A EP 09425420A EP 09425420 A EP09425420 A EP 09425420A EP 2181780 A1 EP2181780 A1 EP 2181780A1
Authority
EP
European Patent Office
Prior art keywords
machine
gear wheel
pipe
bending die
bending
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP09425420A
Other languages
German (de)
French (fr)
Other versions
EP2181780B1 (en
Inventor
Alessandro Caporusso
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CML International SpA
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CML International SpA
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Publication date
Application filed by CML International SpA filed Critical CML International SpA
Publication of EP2181780A1 publication Critical patent/EP2181780A1/en
Application granted granted Critical
Publication of EP2181780B1 publication Critical patent/EP2181780B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/04—Bending rods, profiles, or tubes over a movably-arranged forming menber
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment

Definitions

  • the present invention relates to a pipe bending machine having an improved movement transmission to a bending die.
  • the machine comprises a body and a head. Housed in the body is a motor, whose output shaft supports a driving gear wheel in the machine head. The driving gear wheel engages a driven gear wheel that is rigidly connected to a pipe bending die. It is evident that greater is the diameter of the pipes to be bent, higher is the required motor power, and also the transmission gear wheels must be suitable to the required torque. Increased required torque needs increased sizes of the machine, and as a result also the cost of the machine rises.
  • the technical problem at the basis of the present invention is to provide a pipe bending machine having an improved movement transmission to a bending die in order to overcome above cited drawbacks relating to the encumbrance and low transmitted power in the state of art.
  • an object of the present invention is to provide a pipe bending machine having an improved movement transmission to a bending die, the pipe bending machine having reduced-size gear wheels maintaining the same power transmitted from the driving gear wheel to the driven gear wheel.
  • a pipe bending machine having an improved movement transmission to a bending die, the machine comprising a body and a head, a motor being housed in the machine body and having an output shaft supporting a driving gear wheel, which is located in the machine head, and a driven gear wheel, which is connected to a pipe bending die, being located in the same machine head, wherein a couple of intermediate gear wheels engage both the driving gear wheel and the driven gear wheel.
  • the Applicant developed a so called translation invention, transposing a device from a technical field, where said device is already known, to another one in which the device is not yet employed.
  • a machine body is indicated as 1 and a machine head as 2.
  • a motor 3 generally an electric motor.
  • a driving gear wheel 5 is keyed to the output shaft 4 of the motor 3.
  • Located on the machine head 2 is also a bending die 6 (only partially shown) that allows pipes to be bent in a known way.
  • the bending die 6 is rotated by a shaft 7 to which a driven gear wheel 8 is keyed.
  • intermediate gear wheels 9 and 10 are interposed between the driving gear wheel 5 and the driven gear wheel 8.
  • the intermediate gear wheels 9 and 10 engage at the same time both the driving gear wheel 5 and the driven gear wheel 8. In such a way the intermediate gear wheels 9 and 10 both transmit a movement of rotation from the driving gear wheel 5. If the driving gear wheel rotates in a direction, also the driven gear wheel 8 rotates in the same direction.
  • the power transmitted from the motor 3 to the bending die 6 being equal, the size of the gear wheels of the transmission and then of the machine head 2, and generally of all pipe bending machine, can be reduced.
  • FIG. 3 shown therein is a general axonometric view of the pipe bending machine in which the present invention is embodied.
  • the sizes of the machine being equal to those of the precedent machines having a reduced performance, to develop improved bending performance, up to the double of the present one, is made easier.

Abstract

A pipe bending machine having an improved movement transmission to a bending die comprises a body (1) and a head (2). Housed in the body (1) is a motor (3) having an output shaft (4) supporting a driving gear wheel (5), which is located in the machine head (2). Located in the same machine head (2) is a driven gear wheel (8), which is connected to a pipe bending die (6). A couple of intermediate gear wheels (9, 10) engage both the driving gear wheel (5) and the driven gear wheel (8).

Description

  • The present invention relates to a pipe bending machine having an improved movement transmission to a bending die.
  • In the existing pipe bending machines the machine comprises a body and a head. Housed in the body is a motor, whose output shaft supports a driving gear wheel in the machine head. The driving gear wheel engages a driven gear wheel that is rigidly connected to a pipe bending die. It is evident that greater is the diameter of the pipes to be bent, higher is the required motor power, and also the transmission gear wheels must be suitable to the required torque. Increased required torque needs increased sizes of the machine, and as a result also the cost of the machine rises.
  • U.S. Patents Nos. 3,302,505 and 5,709,144 in the name of Shiokawa both relate to a machine press characterised by being small in size but producing a high pressure. Among the solutions chosen by that inventor for achieving his objects, provision is made that the power is transmitted from a driving gear wheel to a driven gear wheel by interposing a couple of idle pinion gears between said gear wheels. Whereby, as said in those patents, "the force conveyed by the rotation is doubled, so that the diameter of the gear wheel can be reduced by half. As the result, it becomes possible to reduce the measurements of the machine by placing all the gears in the frame and also to reduce the wear and noise of each part".
  • According to the present invention, what is taught with reference to a machine press is thought to be transferred to another kind of machine, such as a pipe bender, taking the same solution with the purpose of obtaining either reduced sizes or, alternatively, an improved performance of the pipe bending machine.
  • In this context, the technical problem at the basis of the present invention is to provide a pipe bending machine having an improved movement transmission to a bending die in order to overcome above cited drawbacks relating to the encumbrance and low transmitted power in the state of art.
  • In particular, an object of the present invention is to provide a pipe bending machine having an improved movement transmission to a bending die, the pipe bending machine having reduced-size gear wheels maintaining the same power transmitted from the driving gear wheel to the driven gear wheel.
  • The object is generally achieved by a pipe bending machine having an improved movement transmission to a bending die, the machine comprising a body and a head, a motor being housed in the machine body and having an output shaft supporting a driving gear wheel, which is located in the machine head, and a driven gear wheel, which is connected to a pipe bending die, being located in the same machine head, wherein a couple of intermediate gear wheels engage both the driving gear wheel and the driven gear wheel.
  • As one can see, the Applicant developed a so called translation invention, transposing a device from a technical field, where said device is already known, to another one in which the device is not yet employed.
  • Further features and advantages of the present invention will be more evident by a schematic and therefore not limiting description of an embodiment of a pipe bending machine having an improved movement transmission to a bending die as shown in the accompanying drawings in which:
    • figure 1 is a cut axonometric view, with some parts being removed, of a pipe bending machine according to the invention;
    • figure 2 is a partially cut top plan view of the pipe bending machine in figure 1, with the bending die being removed; and
    • figure 3 is a general axonometric view of the pipe bending machine according to the invention, with a pipe ready to be bent.
  • First referring to the axonometric view in figure 1, therein a machine body is indicated as 1 and a machine head as 2. Conventionally, situated inside the machine body is a motor 3, generally an electric motor. A driving gear wheel 5 is keyed to the output shaft 4 of the motor 3. Located on the machine head 2 is also a bending die 6 (only partially shown) that allows pipes to be bent in a known way. The bending die 6 is rotated by a shaft 7 to which a driven gear wheel 8 is keyed. According to the present invention, as best shown in the top plan view of the pipe bending machine in figure 2 (with the bending die being removed), intermediate gear wheels 9 and 10 are interposed between the driving gear wheel 5 and the driven gear wheel 8. The intermediate gear wheels 9 and 10 engage at the same time both the driving gear wheel 5 and the driven gear wheel 8. In such a way the intermediate gear wheels 9 and 10 both transmit a movement of rotation from the driving gear wheel 5. If the driving gear wheel rotates in a direction, also the driven gear wheel 8 rotates in the same direction.
  • Thanks to the present invention, the power transmitted from the motor 3 to the bending die 6 being equal, the size of the gear wheels of the transmission and then of the machine head 2, and generally of all pipe bending machine, can be reduced.
  • With reference to figure 3 shown therein is a general axonometric view of the pipe bending machine in which the present invention is embodied. A pipe T that is positioned between the bending die 6 and the counter bending die 11, ready to be bent, is therein shown.
  • Thanks to the present invention, the sizes of the machine being equal to those of the precedent machines having a reduced performance, to develop improved bending performance, up to the double of the present one, is made easier.

Claims (1)

  1. A pipe bending machine having an improved movement transmission to a bending die, said machine comprising a body (1) and a head (2), a motor (3) being housed in the machine body (1) and having an output shaft (4) supporting a driving gear wheel (5), which is located in the machine head (2), and a driven gear wheel (8), which is connected to a pipe bending die (6), being located in the same machine head (2), characterised in that a couple of intermediate gear wheels (9, 10) engage both the driving gear wheel (5) and the driven gear wheel (8).
EP09425420A 2008-10-28 2009-10-23 Pipe-bending machine having an improved movement transmission to a bending die Active EP2181780B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM2008A000574A IT1391476B1 (en) 2008-10-28 2008-10-28 CURVATURI MACHINE WITH PERFECT TRANSMISSION OF THE MOTORCYCLE TO THE MATRIX

Publications (2)

Publication Number Publication Date
EP2181780A1 true EP2181780A1 (en) 2010-05-05
EP2181780B1 EP2181780B1 (en) 2011-06-15

Family

ID=41137356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09425420A Active EP2181780B1 (en) 2008-10-28 2009-10-23 Pipe-bending machine having an improved movement transmission to a bending die

Country Status (10)

Country Link
US (1) US20100101299A1 (en)
EP (1) EP2181780B1 (en)
JP (1) JP2010105047A (en)
KR (1) KR20100047144A (en)
CN (1) CN101722216A (en)
AT (1) ATE512732T1 (en)
BR (1) BRPI0904398A2 (en)
ES (1) ES2368196T3 (en)
IT (1) IT1391476B1 (en)
RU (1) RU2431534C2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102343384A (en) * 2011-10-16 2012-02-08 上海国青机械有限公司 Dual-power-driven digital control pipe bender
CN103406406A (en) * 2013-07-16 2013-11-27 和和机械（张家港）有限公司 Rotary mould structure of pipe bending machine
CN103567262A (en) * 2012-08-07 2014-02-12 浙江摩多巴克斯汽配有限公司 Machine head of pipe bending machine
ITRM20120618A1 (en) * 2012-12-06 2014-06-07 Libero Angelo Massaro MODULAR MACHINE, FOR BENDING METAL TUBES.
EP2995393A1 (en) 2014-09-11 2016-03-16 Melchor Gabilondo, S.A. Bending machine
CN111842574A (en) * 2020-07-23 2020-10-30 临海市金源工艺品有限公司 A equipment of buckling for producing rattan chair skeleton

Families Citing this family (14)

* Cited by examiner, † Cited by third party
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KR101165531B1 (en) * 2010-08-27 2012-07-16 하나로테크 주식회사 Swing ring plate manufacturing device and method using it
KR20120033035A (en) * 2010-09-29 2012-04-06 하나로테크 주식회사 Bending device for swing ring plate
CN102553988B (en) * 2010-12-29 2014-12-31 东莞市蓝冠环保节能科技有限公司 Pipe bending machine
CN102716952A (en) * 2012-06-28 2012-10-10 常熟市电力机具有限公司 Pipe bending machine
CN103801602B (en) * 2012-11-06 2016-11-02 浙江摩多巴克斯科技股份有限公司 Bending machine with pipe end molding function
ITRM20130259A1 (en) * 2013-05-02 2014-11-03 Cml Int Spa BENDING MACHINE OF THE MATRIX AND COUNTERMATCHING TYPE TO TURN RIGHT AND LEFT A PIECE STRETCHED
CN104162565A (en) * 2013-05-17 2014-11-26 何志强 Novel pipe bender
CN104475509B (en) * 2014-11-05 2016-07-13 太仓新宝谊钢管制造有限公司 A kind of steel pipe bender and moulding process thereof
US20180078984A1 (en) * 2015-04-02 2018-03-22 Libero Angelo MASSARO Multipurpose machine for bending metal tubes, both small and large
CN107570562A (en) * 2017-09-26 2018-01-12 张家港市立业机械有限公司 Full-automatic tube bending machine based on servo-drive
CN111163874A (en) * 2017-10-06 2020-05-15 米沃奇电动工具公司 Gear-driven catheter bender
IT201800003532A1 (en) * 2018-03-14 2019-09-14 Massaro Libero Angelo ULTRA-COMPACT TUBE BENDING MACHINE
CN108687188A (en) * 2018-07-18 2018-10-23 重庆双龙机械配件有限公司 Motorcycle exhaust pipe process equipment
IT201800010409A1 (en) * 2018-11-16 2020-05-16 Cml Int S P A Machine for bending an elongated piece without creasing

Citations (6)

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Publication number Priority date Publication date Assignee Title
US3147792A (en) * 1961-09-25 1964-09-08 Charles F Hautau Tube and bar bending machinery
JPS60231527A (en) * 1984-04-27 1985-11-18 Sumitomo Metal Ind Ltd Bending method of pipe
EP0350457A2 (en) * 1988-06-17 1990-01-10 C.M.L. COSTRUZIONI MECCANICHE LIRI S.r.l. A portable manually-controlled three-speed pipe-bending machine
EP0445081A2 (en) * 1990-03-02 1991-09-04 C.M.L. COSTRUZIONI MECCANICHE LIRI S.r.l. Pipe bending machine with cantilevered bending head, with interchangeable multifunction tool, and being programmable by means of a computerized unit
EP0463132B1 (en) * 1990-01-12 1994-12-14 EVG Entwicklungs- u. Verwertungs- Gesellschaft m.b.H. Machine for bending rod-shaped material
US5709144A (en) * 1995-09-04 1998-01-20 Shiokawa; Hiroyasu Lever press machine having a reduced size based on the setting of an ascent/descent stroke of a ram

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JPS512309B2 (en) * 1972-09-08 1976-01-24
JPS5481574A (en) * 1977-12-10 1979-06-29 Hiroyasu Shiokawa Machine press
JPS61255721A (en) * 1985-05-08 1986-11-13 Ishikawajima Harima Heavy Ind Co Ltd Tube bending device
JPH089063B2 (en) * 1985-10-21 1996-01-31 臼井国際産業株式会社 Bending unit device in automatic pipe bender
US5327758A (en) * 1993-06-28 1994-07-12 Galan Jose M J Pipe bending machines
JP3846740B2 (en) * 1994-02-25 2006-11-15 臼井国際産業株式会社 Pipe bending machine
US6755093B2 (en) * 2002-01-29 2004-06-29 Meritor Heavy Vehicle Technology, Llc Planetary drive assembly with idlers for low floor vehicle
US20070295136A1 (en) * 2006-05-05 2007-12-27 The Regents Of The University Of California Anti-backlash gear system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147792A (en) * 1961-09-25 1964-09-08 Charles F Hautau Tube and bar bending machinery
JPS60231527A (en) * 1984-04-27 1985-11-18 Sumitomo Metal Ind Ltd Bending method of pipe
EP0350457A2 (en) * 1988-06-17 1990-01-10 C.M.L. COSTRUZIONI MECCANICHE LIRI S.r.l. A portable manually-controlled three-speed pipe-bending machine
EP0463132B1 (en) * 1990-01-12 1994-12-14 EVG Entwicklungs- u. Verwertungs- Gesellschaft m.b.H. Machine for bending rod-shaped material
EP0445081A2 (en) * 1990-03-02 1991-09-04 C.M.L. COSTRUZIONI MECCANICHE LIRI S.r.l. Pipe bending machine with cantilevered bending head, with interchangeable multifunction tool, and being programmable by means of a computerized unit
US5709144A (en) * 1995-09-04 1998-01-20 Shiokawa; Hiroyasu Lever press machine having a reduced size based on the setting of an ascent/descent stroke of a ram

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102343384A (en) * 2011-10-16 2012-02-08 上海国青机械有限公司 Dual-power-driven digital control pipe bender
CN102343384B (en) * 2011-10-16 2013-06-19 上海国青机械有限公司 Dual-power-driven digital control pipe bender
CN103567262A (en) * 2012-08-07 2014-02-12 浙江摩多巴克斯汽配有限公司 Machine head of pipe bending machine
CN103567262B (en) * 2012-08-07 2015-08-05 浙江摩多巴克斯汽配有限公司 The head of bending machine
ITRM20120618A1 (en) * 2012-12-06 2014-06-07 Libero Angelo Massaro MODULAR MACHINE, FOR BENDING METAL TUBES.
WO2014087327A1 (en) * 2012-12-06 2014-06-12 Massaro Libero Angelo Modular machine, for bending metal pipes
CN103406406A (en) * 2013-07-16 2013-11-27 和和机械（张家港）有限公司 Rotary mould structure of pipe bending machine
CN103406406B (en) * 2013-07-16 2015-06-10 和和机械（张家港）有限公司 Rotary mould structure of pipe bending machine
EP2995393A1 (en) 2014-09-11 2016-03-16 Melchor Gabilondo, S.A. Bending machine
CN111842574A (en) * 2020-07-23 2020-10-30 临海市金源工艺品有限公司 A equipment of buckling for producing rattan chair skeleton
CN111842574B (en) * 2020-07-23 2022-04-22 临海市金源工艺品有限公司 A equipment of buckling for producing rattan chair skeleton

Also Published As

Publication number Publication date
IT1391476B1 (en) 2011-12-23
KR20100047144A (en) 2010-05-07
ITRM20080574A1 (en) 2010-04-28
ATE512732T1 (en) 2011-07-15
US20100101299A1 (en) 2010-04-29
EP2181780B1 (en) 2011-06-15
RU2431534C2 (en) 2011-10-20
CN101722216A (en) 2010-06-09
RU2009139671A (en) 2011-05-10
BRPI0904398A2 (en) 2011-04-19
JP2010105047A (en) 2010-05-13
ES2368196T3 (en) 2011-11-15

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