US3889508A - Pole bending apparatus - Google Patents

Pole bending apparatus Download PDF

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Publication number
US3889508A
US3889508A US477570A US47757074A US3889508A US 3889508 A US3889508 A US 3889508A US 477570 A US477570 A US 477570A US 47757074 A US47757074 A US 47757074A US 3889508 A US3889508 A US 3889508A
Authority
US
United States
Prior art keywords
truck
pedestal
pole
rail member
rack
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
US477570A
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English (en)
Inventor
Toshio Sugita
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.)
SANYU KOSAN KK
Original Assignee
SANYU KOSAN KK
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 SANYU KOSAN KK filed Critical SANYU KOSAN KK
Application granted granted Critical
Publication of US3889508A publication Critical patent/US3889508A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/022—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment over a stationary forming member only

Definitions

  • ABSTRACT An apparatus for bending under pressure an ending mmm m WO rmm eil twt n r 6. 0 c n. ab .finm Owe 8 m .m.
  • the present invention relates to an apparatus for giving a desirable bend to a pole or a pipe.
  • a disc-like guide and a bending roller have been used.
  • the bending roller moves concen trically around the disclike guide, and bends the pole or pipe into an arc-shape which was inserted between it and the guide.
  • the bending works had to be carried out inefficiently with several difficulties.
  • the present invention has been developed in order to overcome the disadvantages of conventional arts mentioned above, and is to provide a pole bending apparatus for bending a pole held between the grooves of a curved guide and of a bending roller into the shape having a desirable curvature by means of that roller mounted on a truck movable on a curved rail which is provided in parallel or concentric relation with the curved guide having a desirable curvature with a certain space between them.
  • FIG. 1 is a plan view of a pole bending device according to the present invention.
  • FIG. 2 is a side elevational view of the main part of the apparatus as seen from the point A.
  • FIG. 3 is an elevational view of the truck.
  • FIG. 4 is a rear elcvational view of the truck.
  • a curved guide 1 having a desirable curvature is supported firmly by legs 15.
  • a curved rail 2 is supported firmly by legs 16 in parallel or concentric relation with the curved guide 1 with a certain space between the two.
  • a rack 3 is fixed on the internal side of the curved rail 2 in a longitudinal direction, and faces the curved guide.
  • a truck 4 which moves automatically on the curved rail 2 has a pedestal 4a which is mounted on the curved rail 2.
  • the pedestal 4a is provided with a bending roller 5 which is opposed to the curved guide 1, and with a gear 6 engaged with the rack 3 on the curved rail 2.
  • the bending roller 5 comprises a groove along its cylindrical surface in horizontal direction
  • the curved guide 1 is also provided with a groove on the surface opposed to the bending roller in a longitudinal direction, so that the two grooves may form an approximately round opening to hold the pipe to be bent.
  • the pedestal 4a is provided with rollers 7, 8, 9, 10, 11, I2 and 13 in order to hold the curved rail 2 from four directions, i.e.
  • a small gear 14 is engaged with the gear 6 to drive it at a reduced speed when a motor (not shown) mounted on the pedestal 4a of the truck 4 is actuated.
  • the rotation of the gear 6 engaged with the rack 3 at a reduced speed via the small gear 14 which is driven by the motor moves the truck 4 on the curved rail 2 along the curved guide 1, and thereby the pole held between the grooves of the guide 1 and of the bending roller 5 can be bent in the same curvature as the curved guide 1.
  • the truck 4 is subjected to a strong force to push it outwardly, but it is supported so firmly on the curved rail 2 by the upper rollers 7, lower rollers 8, and the rollers 9, 10, 11, 12 and 13 at both sides of it that the truck 4 can be driven safely and smoothly, and the bending operation can be carried out efficiently.
  • the bending work can be carried out efficiently not only for a straight pole or pipe but also for a tapered pipe.
  • poles or pipes having such a curved shape which consists of plural arcs can be produced only if the bending guide 1 and the curved rail 2 are installed with a certain and equal space between them.
  • the curved rail is installed at the outside of the curved guide with a certain and equal space between them, and the bending roller is mounted on the truck movable on the curved rail by means of the gear engaged with the rack which extends on the internal side of the curved rail in a longitudinal direction.
  • a pole or pipe inserted into and held between the grooves of the curved guide and of the bending roller, when the bending roller moves along the bending guide is subjected to a consistent pressure on the overall surface of the pole or pipe, whereby the bending work can be carried out safely without cracks occurring at the seam portion of the pipe to produce a pipe having the same curvature as the curved guide.
  • Pole bending apparatus comprising an inner guide member having a concave groove along its outer face and forming an elongated curve to which a pipe is to be bent, an outer rail member formed into a curve spaced from and paralleling that of the guide member and having a rack extending along its length, a movable truck member mounted on the outer rail member and having gear means engaging the rack on the rail member, a bending roller mounted on the truck and having a concave groove facing the concave groove on the inner guide member and forming therewith an approximately round opening for receiving and clamping the pipe to be bent, and means for driving the truck gear means causing the truck to move along the rail member whereby a pipe insertedinto the round opening is bent into a curve conforming to that of the inner guide member.
  • Pole bending apparatus as claimed in claim 1 wherein the rack extends along an inner face of the outer rail member.
  • Pole bending apparatus as claimed in claim 2 wherein the truck member comprises a pedestal, the bending roller is mounted on the pedestal, the rack engaging gear is mounted on the pedestal, and the truck driving means comprises another gear mounted on the pedestal.
  • Pole bending apparatus as claimed in claim 3 and further comprising plural rotary rollers mounted on said pedestal, said plural rotary rollers being located so as to clamp said rail member in two horizontal and two vertical directions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US477570A 1973-06-25 1974-06-10 Pole bending apparatus Expired - Lifetime US3889508A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48070799A JPS5220023B2 (enrdf_load_stackoverflow) 1973-06-25 1973-06-25

Publications (1)

Publication Number Publication Date
US3889508A true US3889508A (en) 1975-06-17

Family

ID=13441939

Family Applications (1)

Application Number Title Priority Date Filing Date
US477570A Expired - Lifetime US3889508A (en) 1973-06-25 1974-06-10 Pole bending apparatus

Country Status (2)

Country Link
US (1) US3889508A (enrdf_load_stackoverflow)
JP (1) JPS5220023B2 (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118739A3 (en) * 1983-03-02 1984-12-19 W. Eckold Ag Pipe-bending arrangement
DE3915855A1 (de) * 1989-05-16 1990-11-22 Walter E Spaeth Universal-biegewerkzeug
CN102744301A (zh) * 2012-07-31 2012-10-24 宁波乐拓金属科技有限公司 条式材料塑型机
CN106984676A (zh) * 2017-05-12 2017-07-28 张家港亿联金属科技有限公司 一种夹具位置可移动的弯管机
US10150154B2 (en) 2013-11-14 2018-12-11 Robert Kyle Hughes, JR. Tube bending machine with reversible clamp assembly
USD907980S1 (en) * 2019-01-14 2021-01-19 Brochman Innovations, Llc Conduit bender
US10919080B1 (en) 2019-12-27 2021-02-16 Brochman Innovations, Llc Tubing bender
USD926003S1 (en) 2020-05-15 2021-07-27 Brochman Innovations, Llc Tubing bender

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS587671U (ja) * 1981-07-07 1983-01-18 株式会社松井色素化学工業所 転写捺染シ−ト

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US27672A (en) * 1860-03-27 nelson and oscar bostwigk
US921677A (en) * 1906-08-29 1909-05-18 J W York And Sons Company Tube-bender.
US2108271A (en) * 1936-07-15 1938-02-15 Howard H Samuel Channel-iron bending apparatus
US3336779A (en) * 1964-10-08 1967-08-22 Wallace J Schall Portable tube bender

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US27672A (en) * 1860-03-27 nelson and oscar bostwigk
US921677A (en) * 1906-08-29 1909-05-18 J W York And Sons Company Tube-bender.
US2108271A (en) * 1936-07-15 1938-02-15 Howard H Samuel Channel-iron bending apparatus
US3336779A (en) * 1964-10-08 1967-08-22 Wallace J Schall Portable tube bender

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118739A3 (en) * 1983-03-02 1984-12-19 W. Eckold Ag Pipe-bending arrangement
DE3915855A1 (de) * 1989-05-16 1990-11-22 Walter E Spaeth Universal-biegewerkzeug
EP0398280B1 (de) * 1989-05-16 1994-08-17 Walter E. Späth Universal-Biegewerkzeug
CN102744301A (zh) * 2012-07-31 2012-10-24 宁波乐拓金属科技有限公司 条式材料塑型机
CN102744301B (zh) * 2012-07-31 2014-04-30 宁波乐拓金属科技有限公司 条式材料塑型机
US10150154B2 (en) 2013-11-14 2018-12-11 Robert Kyle Hughes, JR. Tube bending machine with reversible clamp assembly
CN106984676A (zh) * 2017-05-12 2017-07-28 张家港亿联金属科技有限公司 一种夹具位置可移动的弯管机
CN106984676B (zh) * 2017-05-12 2019-05-10 苏州华尔普机械有限公司 一种夹具位置可移动的弯管机
USD907980S1 (en) * 2019-01-14 2021-01-19 Brochman Innovations, Llc Conduit bender
US10919080B1 (en) 2019-12-27 2021-02-16 Brochman Innovations, Llc Tubing bender
EP4081356A4 (en) * 2019-12-27 2024-01-10 Brochmann Innovations, LLC Tubing bender
US12343783B2 (en) 2019-12-27 2025-07-01 Brochman Innovations, Llc Tubing bender
USD926003S1 (en) 2020-05-15 2021-07-27 Brochman Innovations, Llc Tubing bender

Also Published As

Publication number Publication date
JPS5220023B2 (enrdf_load_stackoverflow) 1977-06-01
JPS5019670A (enrdf_load_stackoverflow) 1975-03-01

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