US3410125A - Tubular stock bending machine - Google Patents

Tubular stock bending machine Download PDF

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Publication number
US3410125A
US3410125A US613563A US61356367A US3410125A US 3410125 A US3410125 A US 3410125A US 613563 A US613563 A US 613563A US 61356367 A US61356367 A US 61356367A US 3410125 A US3410125 A US 3410125A
Authority
US
United States
Prior art keywords
die
bending
wiper
bending machine
stock
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.)
Expired - Lifetime
Application number
US613563A
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English (en)
Inventor
Schmidt Hans
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.)
Pines Engineering Co Inc
Original Assignee
Pines Engineering Co Inc
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 Pines Engineering Co Inc filed Critical Pines Engineering Co Inc
Priority to US613563A priority Critical patent/US3410125A/en
Priority to GB22587/67A priority patent/GB1131173A/en
Priority to DE1627585A priority patent/DE1627585C3/de
Application granted granted Critical
Publication of US3410125A publication Critical patent/US3410125A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
    • B21D9/07—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only
    • B21D9/073—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only with one swinging forming member

Definitions

  • the invention relates to improvements in machines for bending tubular stock and the like. Itincludes a bending die and clamp die and a ram assembly of conventional construction. A wiper die is associated with and is formed to nest at one end in the bending die to insure a smooth undulated bend.
  • This wiper die is mounted that, when the clamp die moves into open position, the wiper die is rotated about the axis of the bending die to such an extent that clearance is afforded to the ram assembly to enable it to more closely approach the bending die than has heretofore been possible with bending machine assemblies of known construction.
  • Another object is to provide a bending machine having a bending die therein, with a wiper die assembly of novel construction.
  • Another object of the invention is to provide a wiper die of novel construction for a bending machine.
  • Another object is to provide apparatus of the character referred to which is not expensive or difficult to manufacture and maintain in serviceable condition, and one that is very efficient in use.
  • FIG. 1 is a plan view of a bending machine embodying the features of the invention, showing the wiper and clamp dies in tube clamping positions;
  • FIG. 2 is a plan view similar to FIG. 1, showing the wiper dieand clamp die in open positions and the ram advanced;
  • FIG. 3 is an enlarged sectional plan view of the bending die showing the wiper die, in section, associated therewith;
  • FIG. 4 is a plan view of the Wiper die
  • FIG. 5 is a front elevational view of the wiper die
  • FIG. 6 is a rear view of the wiper die
  • FIG. 7 is an end view of the wiper die.
  • the machine includes a frame structure 11, only partially illustrated, having a nose portion on which a bending die 12 is mounted for rotation in a horizontal plane.
  • the bending die has associated with it a wiper die 13 of novel construction, and a clamp die 14. These dies cooperate to embrace the tail end of a length of stock, such as the tubular stock 15 illustrated in broken lines.
  • machines of this character operate to cause partial rotation, counterclockwise, of the bending die and an associated clamp 16, so as to cause the tubular stock to be bent into a required curvature.
  • the wiper die 13 and associated clamp die 14 function to 3,410,125 Patented Nov. 12, 1968 hold the tail portion of the tubular stock during the bending operation.
  • said stock is fed, in measured amounts, forwardly into the clamp and die ram 17 of any conventional constructionis advanced assemblies following each successive bend. To this end a along guide 18 against the tail end of the stock.
  • the clamp die 14 is withdrawn from its clamp position.
  • the bending machine herein disclosed obviates such material waste and extra labor by affording means whereby the ram can closely approach the bending die and thus permit the performance of a bend in the extreme tail portion of the stock.
  • the wiper die 13 is carried on a movable element so as to be moved out of the way of the ram.
  • the wiper die 13 is mounted firmly on a table 19 that is freely rotatable about the axis of the bending die, independently of rotation of said bending die.
  • the table 19 includes an annulus 19a that is suitably journalled for free rotation in a horizontal plane on the machine housing nose.
  • the wiper die 13 is suitably secured to the table as by a mounting block 20 and it is formed, in a manner to be described presently, so as to have one end nest snugly in the tube receiving groove 21 of the bending die.
  • Rotational movement of the table and wiper die may 'be effected by a piston-cylinder assembly 22 connected thereto, as at 23.
  • This piston-cylinder assembly may be hydraulically operated.
  • the wiper die 13 is in clamp position whereas in FIG. 2 it is shown in open position.
  • the clamp die 14 When in clamp position it bears against one side of the tubular stock and the clamp die 14 bears against the opposed side of said stock, thus clamping the stock firmly between them.
  • the clamp die 14 is movable also into an open position as shown in FIG. 2.
  • the ram 17 may advance closely to the bending die between said wiper die and clamp die, as shown in FIG. 2, so as to thrust the tail portion of the stock 15 forwardly a maximum distance thus leaving no waste tail portion. In fact, a bend may be accomplished in the extreme tail end portion of the tubular stock.
  • the wiper die 13 is formed to fit snugly into and merge with the bending die. This is best illustrated in FIGS. 3 to 7.
  • the wiper die comprises a semi-cylindrical length of solid stock having its forward or bending die meeting-end suitably formed to nest into the bending die groove 24. Accordingly, the effective end of the body of the wiper die is cut away, as at 25, to conform substantially to the greatest diameter of the bending die.
  • a nose portion 26 is formed thereon which is contoured to nest in a semi-circular groove 21 of the bending die.
  • This information generates a knife-like terminal edge 27 that merges into the surface of the semi-circular groove 21.
  • a knife-like terminal edge 27 that merges into the surface of the semi-circular groove 21.
  • I 1 In a bending machine including a bending die, a clamp die and a wiper die, wherein theimprovement comprises, a mountingtor the wiper die which is rotatable about the axis of the bending die, and means operable to rotate" said mounting and wiper die thereon about said 8X18... t i -2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US613563A 1967-02-02 1967-02-02 Tubular stock bending machine Expired - Lifetime US3410125A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US613563A US3410125A (en) 1967-02-02 1967-02-02 Tubular stock bending machine
GB22587/67A GB1131173A (en) 1967-02-02 1967-05-16 Bending machine
DE1627585A DE1627585C3 (de) 1967-02-02 1967-05-20 Rohrbiegemaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US613563A US3410125A (en) 1967-02-02 1967-02-02 Tubular stock bending machine

Publications (1)

Publication Number Publication Date
US3410125A true US3410125A (en) 1968-11-12

Family

ID=24457790

Family Applications (1)

Application Number Title Priority Date Filing Date
US613563A Expired - Lifetime US3410125A (en) 1967-02-02 1967-02-02 Tubular stock bending machine

Country Status (3)

Country Link
US (1) US3410125A (de)
DE (1) DE1627585C3 (de)
GB (1) GB1131173A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126030A (en) * 1977-10-03 1978-11-21 Eaton-Leonard Corporation Retractable pressure die
US4325244A (en) * 1980-09-02 1982-04-20 Stowe Robert L Self-repairing wiper die
US4355528A (en) * 1979-02-09 1982-10-26 Rothenberger Gmbh & Co. Device for bending metal pipe
US4380920A (en) * 1980-10-14 1983-04-26 Coop Jeffrey W Sr Adjustable wiper die for bending tubular members
US4938048A (en) * 1987-12-02 1990-07-03 Picot, S.A. Guide strip control device of pipe bending machine
EP1683589A1 (de) * 2005-01-25 2006-07-26 CML International S.p.A. Biegevorrichtung für Biegemaschine
EP1700647A1 (de) * 2005-03-08 2006-09-13 WAFIOS Aktiengesellschaft Biegevorrichtung für stab- und rohrförmige Werkstücke
US20070234775A1 (en) * 2006-04-07 2007-10-11 Norbert Speck Bending machine for rod-shaped workpieces made from wire, tubular material or the like
CN101096041B (zh) * 2006-06-28 2010-06-23 浙江金马逊机械有限公司 一种用于弯管机上的抗皱模组
CN104907371A (zh) * 2015-05-07 2015-09-16 浙江利帆家具有限公司 一种圆管折弯装置的改进结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008031276A1 (de) * 2008-07-02 2010-01-07 Benteler Automobiltechnik Gmbh Biegewerkzeug und Faltenglätter für ein Biegewerkzeug

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873786A (en) * 1954-02-26 1959-02-17 Western Electric Co Apparatus for making zero-radius bends in rectangular tubing
US2906316A (en) * 1957-08-13 1959-09-29 Stephen G Gerlach Bending machine wiper die supporting means
US3156287A (en) * 1961-12-12 1964-11-10 Pines Engineering Co Inc Control means for metal forming apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873786A (en) * 1954-02-26 1959-02-17 Western Electric Co Apparatus for making zero-radius bends in rectangular tubing
US2906316A (en) * 1957-08-13 1959-09-29 Stephen G Gerlach Bending machine wiper die supporting means
US3156287A (en) * 1961-12-12 1964-11-10 Pines Engineering Co Inc Control means for metal forming apparatus

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126030A (en) * 1977-10-03 1978-11-21 Eaton-Leonard Corporation Retractable pressure die
US4355528A (en) * 1979-02-09 1982-10-26 Rothenberger Gmbh & Co. Device for bending metal pipe
US4325244A (en) * 1980-09-02 1982-04-20 Stowe Robert L Self-repairing wiper die
US4380920A (en) * 1980-10-14 1983-04-26 Coop Jeffrey W Sr Adjustable wiper die for bending tubular members
US4938048A (en) * 1987-12-02 1990-07-03 Picot, S.A. Guide strip control device of pipe bending machine
US7299671B2 (en) 2005-01-25 2007-11-27 Cml International S.P.A. Bending device for bending machine
US20060174671A1 (en) * 2005-01-25 2006-08-10 Cml International S.P.A. Bending device for bending machine
KR100710438B1 (ko) 2005-01-25 2007-04-23 씨엠엘 인터내셔널 에스. 피. 에이. 벤딩 머신용 벤딩장치
EP1683589A1 (de) * 2005-01-25 2006-07-26 CML International S.p.A. Biegevorrichtung für Biegemaschine
AU2006200331B2 (en) * 2005-01-25 2008-05-29 Cml International S.P.A. Bending device for bending machine
EP1700647A1 (de) * 2005-03-08 2006-09-13 WAFIOS Aktiengesellschaft Biegevorrichtung für stab- und rohrförmige Werkstücke
US20060201219A1 (en) * 2005-03-08 2006-09-14 Frank Hacker Bending apparatus for rod-shaped and tubular workpieces
US7293444B2 (en) 2005-03-08 2007-11-13 Wafios Aktiengesellschaft Bending apparatus for rod-shaped and tubular workpieces
US20070234775A1 (en) * 2006-04-07 2007-10-11 Norbert Speck Bending machine for rod-shaped workpieces made from wire, tubular material or the like
US7721582B2 (en) 2006-04-07 2010-05-25 Wafios Aktiengesellschaft Bending machine for rod-shaped workpieces made from wire, tubular material or the like
CN101096041B (zh) * 2006-06-28 2010-06-23 浙江金马逊机械有限公司 一种用于弯管机上的抗皱模组
CN104907371A (zh) * 2015-05-07 2015-09-16 浙江利帆家具有限公司 一种圆管折弯装置的改进结构

Also Published As

Publication number Publication date
GB1131173A (en) 1968-10-23
DE1627585B2 (de) 1977-10-20
DE1627585C3 (de) 1978-05-24
DE1627585A1 (de) 1970-05-06

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