EP0108193B2 - Rohrbiegemaschine - Google Patents

Rohrbiegemaschine Download PDF

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Publication number
EP0108193B2
EP0108193B2 EP83106429A EP83106429A EP0108193B2 EP 0108193 B2 EP0108193 B2 EP 0108193B2 EP 83106429 A EP83106429 A EP 83106429A EP 83106429 A EP83106429 A EP 83106429A EP 0108193 B2 EP0108193 B2 EP 0108193B2
Authority
EP
European Patent Office
Prior art keywords
bending
machine according
pipe
template
drive
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
EP83106429A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0108193A2 (de
EP0108193B1 (de
EP0108193A3 (en
Inventor
Rigobert Dipl.-Ing. Schwarze
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
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Application filed by Individual filed Critical Individual
Publication of EP0108193A2 publication Critical patent/EP0108193A2/de
Publication of EP0108193A3 publication Critical patent/EP0108193A3/de
Application granted granted Critical
Publication of EP0108193B1 publication Critical patent/EP0108193B1/de
Publication of EP0108193B2 publication Critical patent/EP0108193B2/de
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
    • B21D7/12—Bending rods, profiles, or tubes with programme control
    • 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 a pipe bending machine with an elongated machine frame according to the preamble of claim 1, which is based on a company document "invitation 4th EMO Hannover 15-24 IX 1981” from Cantu (CO), Italy.
  • a machine that is referred to in this document as "Type B4X” is referred to below as a standard machine.
  • Pipe bending machines with the features described above are known for the call bending of pipes.
  • a bending mandrel present in the interior of the pipe to be bent can also be arranged.
  • Bending machines of the above-described training are extremely suitable for bending pipes with a larger diameter. Pipes of larger diameter are often bent with larger or larger bending radii. As a result, the freedom of bending that a pipe bending machine should have is not essential. This is also the reason, because with numerically controlled pipe bending machines the question of the freedom of bending, so that parts of the pipe that are bent when the pipe is bent, do not hit components of the bending machine, are checked and entered into the program. Pipes with a smaller diameter are usually bent with smaller bending radii. This means that during bending there is a risk that bent pipe parts will strike components of the pipe bending machine. Therefore, the question of freedom from bending is of great importance.
  • EP-A1-0 029 694 describes how great freedom of bending can be created on a pipe bending machine.
  • the invention is not based on this, but rather on a standard machine of the type mentioned above.
  • a beam-shaped support is arranged on the machine frame which carries the bending table at one end, the center of rotation of the bending table being in the longitudinal center of the beam.
  • the support offers ground clearance so that the already bent area of the tube can also get under the bending table, the side clearance and the back clearance are limited by the beam-shaped support and also by the feed carriage which can be moved along the support.
  • the invention has for its object to provide a pipe bending machine of the type mentioned, which gives great freedom in terms of space and also in its structural design with regard to the tube configuration after bending.
  • T hrough the inventive solution, which can also be expressed in such a manner that the bending table is mounted on an outwardly beyond the vertical side wall above cultivation, there is provided a comparatively exposed bending assembly, which gives an improved flexural freedom.
  • the drive of the bending template is transverse to the longitudinal extension of the machine frame or of the one carrying the bending template Support beam is on the side of the feed carriage or the slide rail.
  • the structural unit have a further drive for the movement of the slide rail in the longitudinal direction of the carrier or tangential to the bending template.
  • the structural unit is screwed onto the support beam.
  • the drive of the bending template and the drive of the slide rail for their movement in the radial direction of the bending template run parallel to one another.
  • the drive of the bending template consists of a hydraulic motor, on the outgoing shaft of which a worm shaft is fastened with a worm wheel is this drives the bending table via a worm gear set surrounding the bending table.
  • the drive of the slide rail in the radial direction of the bending template consists of a hydraulic piston-cylinder arrangement which is arranged above and laterally offset from the hydraulic motor drive of the bending table.
  • the drive of the slide rail in the longitudinal direction of the machine frame consists of a hydraulic piston-cylinder arrangement, which is arranged above the hydraulic motor and extending transversely thereto.
  • the bending table be rotationally symmetrical. As a result, it occupies only a small space.
  • the bending table is arranged in a housing which carries the drive worm and which is screwed onto the side wall of the supporting caliber. This measure not only ensures that the axis of rotation of the bending table is arranged laterally in front of the support beam, but also simple manufacture and assembly is achieved.
  • the bending table is provided at half height with a rotating worm wheel and consists of an outer casing and an inner sleeve, the worm wheel being arranged on the sleeve in the space between the casing and the sleeve.
  • measures are also provided according to the present invention to simplify the components or to arrange them in the most spatially advantageous manner.
  • the sleeve of the bending table is designed in its interior as a cylinder in which a piston which can be acted on from both sides is arranged so as to be axially movable, the piston being provided with a piston rod which projects upward from the cylinder.
  • the bending template is divided in the middle of its circumferential groove in a horizontal plane into a lower bending template part and an upper bending template part, the lower bending template part being connected to the sleeve and the upper bending template part being connected to the piston rod which can be moved out of the sleeve.
  • the axially acting clamping is particularly advantageously achieved by the proviso that the upper part of the bending template has a collar which projects beyond this circumference and which has a semicircular groove serving as a clamping jaw.
  • This collar particularly advantageously has an extension projecting downward beyond the lower half of the bending template.
  • the bending table in its upper region above the level of the beam supporting it be tapered strongly and preferably the lower bending template part also has an adapted cone.
  • a conical ring is present on the bending table, which overlaps the conical lower region of the lower bending template part and the upper conical region of the bending table and is held on it by fastening elements.
  • FIG. 1 shows a pipe bending machine with the feed carriage 10, which can be moved back and forth on one or more guide rails 11 on the upper side of the machine frame 12.
  • the Feed carriage 10 has a tubular cylinder 13 with an adapter sleeve 14, in which the tube 15 to be bent is clamped.
  • the tube 15 is guided around a pivotally mounted bending template 16, which has a recess 17 corresponding to the tube radius.
  • the tube is pressed against the bending template via a clamping jaw 18, the clamping jaw being actuated on a clamping device 19 via a hydraulic cylinder 20.
  • These components are arranged on the swivel arm 21 of the bending table, while the template 16 is arranged axially to the axis of rotation. The rotation takes place in the direction of arrow 22.
  • a slide rail is designated by 23.
  • the machine frame 27 has a protruding stem 28. With 29 the chain case of a template reverse rotation is designated, which also affects the freedom from bending.
  • the bending table 21 is driven by a chain accommodated in the stem 28, which is actuated by two piston-cylinder arrangements 30 and 31 in the machine frame.
  • Figure 2 shows the Rohrbeigermaschine of the inventive design. Although these have the same basic elements as the machine according to FIG. 1, such as feed carriage, clamping sleeve, bending table, bending template, slide rail and clamping jaw, other reference symbols should be selected in the following description for the components of FIGS. 2 to 12.
  • the machine frame 31 carries a supporting beam 33 which projects far on both sides 32, 32a and has a running rail 34 for the feed carriage 35, which carries the clamping sleeve 36.
  • the clamping sleeve is actuated by a hydraulic motor 37 which is arranged above the clamping sleeve.
  • the bending table 43 which, as will be described in detail later, is of a rotationally symmetrical design and is therefore not provided with a swivel arm, is arranged on the supporting beam part projecting forward.
  • the axis of rotation 44 which may be the center of the physical axis of rotation or the geometric axis of rotation, is present, as can be seen in particular in FIG. 3, in the vicinity of the vertical plane of the vertical side wall 45 of the machine frame or the support beam 33. According to FIG. 3, it stands in front of its vertical plane 45. It can also be shown that the bending table is mounted on an extension 46 projecting beyond the vertical side wall 45.
  • the beam-shaped support 33 is arranged in such a way that there is a free space below this support up to the base of the machine frame.
  • the tube 47 can be bent in such a way that parts of the bent tube can reach under the bending table and also the support beam 33 of the bending table.
  • the slide rail is designated. This is moved in the indicated double arrow direction 49 in the radial direction of the bending template 50 arranged on the bending table 43 by a hydraulic cylinder arrangement 51.
  • a component 52 is provided, which consists of the leg 52a and the leg 52b .
  • Transversely to the drive 51 there is a piston-cylinder arrangement 53 which serves to move the slide rail in the indicated arrow direction 53 'and thus in the longitudinal direction of the support beam or tangentially to the bending template, so that the slide rail moves along when the tube is bent.
  • the bending table 43 and thus the bending template 50 is rotated by the hydraulic motor 54 with a worm shaft 55 and the drive worm 56, likewise shown in FIG. 3 and shown in broken lines.
  • the hydraulic drives 51, 53 and 54 are shown essentially schematically in FIG. 3 and in their spatial arrangement with respect to one another. They form a structural unit 57, 58, which is described in detail below in connection with FIGS. 4 to 7.
  • Figure 4 shows that the bending table 43 is mounted on a structure 46 which is screwed to the side wall 45 of the beam-like support 33 by means of screws 59 and 60, with the result that the axis of rotation, here the center of the axis of rotation 44, projects beyond the side wall 45 .
  • the worm wheel is designated, which is provided with an assigned shaft 55, which starts from a hydraulic motor 54 which cannot be seen in FIG.
  • Running laterally and in parallel is the piston-cylinder arrangement 51, consisting of the cylinder 51a, the piston 51 and the piston rod 51c, which is fastened to a carrier 52 which, with regard to FIG. 3, has a different spatial arrangement, but the same It has functions because it moves the slide rail (not shown in FIG. 4) in the indicated double arrow direction 49, so that the slide rail comes into contact with the pipe to be bent or is removed from it.
  • FIG. 4 shows a rotary encoder 61 which is provided at its lower end with a chain wheel 62 so that the respective rotation of the bending table, the respective rotation of the bending table, is detected via a chain 63, connected to a chain wheel 64 on the rotationally symmetrical bending table.
  • FIG. 5 shows the hydraulic motor 54, which cannot be seen in detail from FIG. 4, with its outgoing shaft 55, which is connected via a bushing 65 and associated wedges 66, 66a is connected to the worm shaft 56a of the worm 56.
  • the worm shaft 56a is supported in the aforementioned housing 46 which supports the bending table.
  • Figure 5 shows the slide rail 48 which is mounted on the carrier 52b. As can be seen in principle from FIG. 3, this is displaced radially to the bending template 50 in the indicated double arrow direction 49 by the cylinder 51a, the piston rod 51c of which is fixed to a fastening 52. Since the piston can be hit on both sides, the cylinder wall 51a, which is connected to the slide rail, is displaced.
  • Figure 4 shows the position in which the slide rail has moved up to the pipe to be bent. The movement takes place on a rail 67 shown in FIG. 5.
  • FIG. 6 shows, in the same way as FIG. 4, the rotary encoder 61 with its sprocket 62 arranged below the carrier 45, furthermore the chain 63 and the sprocket 64 present on the bending table.
  • FIG. 7 shows particularly clearly that the bending table 43 is designed as a rotating body. It is mounted in the structure 46 with its end face 46a in two spaced-apart tapered roller bearings 68 and 69.
  • the bending table consists of the sleeve 70, which is closed at the top by a cover 71 via screws 72 and at the bottom by a bushing 73 via screws 74 . Between the aforementioned tapered roller bearings 68 and 69, the rotating worm wheel 75 is fixed to the sleeve 70, in which the worm 56 of the hydraulic motor 54 engages.
  • the sleeve 70 is designed as a cylinder. It has a piston 76 in its interior which is effective on both sides.
  • the piston has a downwardly projecting piston rod 77, which serves as a guide, and an upwardly projecting piston rod 78, which in its upper region has a step 79 formed by a stepwise reduction in the diameter.
  • the bending template 82 consists of the upper bending template part 82a and the lower bending template part 82b, with a dividing line in the middle of the groove 83.
  • the upper bending template part 82a also has a step so that the upper bending template part is firmly connected to the piston rod 78 via the screw 85.
  • the lower bending template part 82 is provided with an extension 86, which is conical in its lower region 86a and which widens outwards, so that in connection with the likewise conical ring 87 in connection with a wedge 88 and fastening screws 89, it is secure against rotation Connection between the bending table and bending template 82 takes place.
  • the ring 82 consists of two halves.
  • Figure 11 shows the support beam 33 as a tube with a rectangular cross-section to which the rail 34 is welded. This carries, via a welded-on intermediate rail 93, the welded-on toothed rack 94, in which the drive of the feed cheek engages.
  • Figure 12 shows that the body 46 is screwed to the side of the support beam, which is provided with an angled part 46a and with the bending table 43 and the drives 54, 51, 53 is a structural unit.
  • the support beam 2 has a length of the support beam of 3 to 4 meters and a height of 1 meter.
  • the support beam according to FIGS. 11 and 12 has a width of 15 cm and a height of 10 cm.
  • the running rail 34 is 12 cm wide.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP83106429A 1982-11-04 1983-07-01 Rohrbiegemaschine Expired - Lifetime EP0108193B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3240799 1982-11-04
DE19823240799 DE3240799A1 (de) 1982-11-04 1982-11-04 Rohrbiegemaschine

Publications (4)

Publication Number Publication Date
EP0108193A2 EP0108193A2 (de) 1984-05-16
EP0108193A3 EP0108193A3 (en) 1984-07-25
EP0108193B1 EP0108193B1 (de) 1986-12-30
EP0108193B2 true EP0108193B2 (de) 1990-08-16

Family

ID=6177313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106429A Expired - Lifetime EP0108193B2 (de) 1982-11-04 1983-07-01 Rohrbiegemaschine

Country Status (5)

Country Link
US (1) US4563891A (ja)
EP (1) EP0108193B2 (ja)
JP (1) JPS5987929A (ja)
CA (1) CA1206082A (ja)
DE (2) DE3240799A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104858269A (zh) * 2015-04-22 2015-08-26 罗瑞运动用品（昆山）有限公司 一种滑板车圆管弯管机

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61255721A (ja) * 1985-05-08 1986-11-13 Ishikawajima Harima Heavy Ind Co Ltd 管の曲げ加工装置
DE3619643C2 (de) * 1985-06-22 1996-01-11 Schwarze Rigobert Rohrbiegemaschine
DE3627502C2 (de) * 1986-08-13 1995-06-14 Schwarze Rigobert Rohrbiegemaschine
IT210698Z2 (it) * 1987-05-11 1989-01-11 Oscam Spa Macchina per la piegatura di tondini o simili elementi metallici
AT390215B (de) * 1988-09-09 1990-04-10 Vaillant Gmbh Vorrichtung zum biegen von rohren
DE4129478A1 (de) * 1991-09-05 1993-03-11 Schwarze Rigobert Verfahren zur steuerung einer rohrbiegemaschine
US6192728B1 (en) * 2000-05-30 2001-02-27 Yin Lin Machine Industrial Co., Ltd Pipe bending machine accurately controlling bent angles of pipes
FR2826889B1 (fr) * 2001-07-06 2003-10-03 Silfax Chariot pour machine a cintrer les tubes
US7171834B2 (en) * 2004-04-22 2007-02-06 Robinson Ross G External sleeve assisted tube bending
DE102006054119C5 (de) * 2006-11-15 2009-12-10 Benteler Automobiltechnik Gmbh Biegevorrichtung für Rohre
FR2922127B1 (fr) 2007-10-15 2010-03-05 Jaubjaub Consulting Machine a cintrer un profile et outillage de cintrage pour une telle machine
CN103272899A (zh) * 2013-06-20 2013-09-04 张家港市明华机械制造有限公司 一种弯管机
CN103978073A (zh) * 2014-05-23 2014-08-13 浙江国华家具有限公司 快速制作休闲椅椅腿的折弯机
JP1525574S (ja) * 2014-11-26 2017-05-22
JP1525571S (ja) * 2014-11-26 2017-05-22
JP1527322S (ja) * 2014-11-26 2017-06-05
JP1525573S (ja) * 2014-11-26 2017-05-22
JP1525570S (ja) * 2014-11-26 2017-05-22
CN105170737A (zh) * 2015-09-14 2015-12-23 苏州市宝玛数控设备有限公司 一种管路用的数控弯管机
CN105170741A (zh) * 2015-09-23 2015-12-23 苏州华冲精密机械有限公司 一种圆盘式铝型材弯曲机
CN107900168B (zh) * 2017-11-06 2019-12-06 佛山市顺德区莱雄机械设备有限公司 左右向共享的一体式数控弯管机
CN110936164A (zh) * 2019-11-07 2020-03-31 苏州嘉翔展示道具有限公司 一种新型金属管体折弯机及其管体折弯加工工艺
CN112045088A (zh) * 2020-08-01 2020-12-08 李昌全 灯框自动成型加工装置及灯框加工方法
CN114798847B (zh) * 2022-06-29 2022-09-06 江苏元贞智能科技有限公司 一种工程施工用金属管材折弯装置
CN115318893B (zh) * 2022-10-13 2022-12-23 南通腾中机械有限公司 一种数控折弯加工生产装置
CN117019944B (zh) * 2023-10-10 2023-12-08 江苏苏锐制管有限公司 一种不锈钢管加工设备

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US3017917A (en) * 1959-12-10 1962-01-23 Pines Engineering Co Inc Tube bending machine
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DE1527394A1 (de) * 1963-06-14 1969-12-18 Claude Ragache Universalbiegemaschine
US3276235A (en) * 1963-07-02 1966-10-04 Parker Hannifin Corp Hydraulic tube bending machine
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DE1552984C3 (de) 1966-07-13 1975-01-09 H. Schwarze Soehne, Gebr. Schwarze, Peter Wirtz Kg, 5000 Koeln Rohrbiegemaschine mit einem an einer Vertikalachse schwenkbaren Biegetisch
US3475938A (en) * 1967-05-02 1969-11-04 Foster Wheeler Corp Apparatus for bending
DE1627620C3 (de) * 1967-08-03 1975-01-02 H. Schwarze Soehne, Gebr. Schwarze, Peter Wirtz Kg, 5000 Koeln Rohrbiegemaschine
DE2001827A1 (de) * 1970-01-16 1971-07-22 Harten Herbert Van Rohrbiegemaschine
FR2117745A1 (en) * 1970-12-14 1972-07-28 Alsthom Tube bending - by internally heating a small square section of the tube as it is bent
DE2133359B2 (de) 1971-07-05 1973-08-30 Rohrbiegemaschine
US4063441A (en) * 1975-09-19 1977-12-20 Eaton-Leonard Corporation Apparatus for bending tubes
DE2709201A1 (de) 1976-06-03 1977-12-15 Homer L Eaton Verfahren und maschine zum kaltbiegen von insbesondere metallrohren
US4126030A (en) * 1977-10-03 1978-11-21 Eaton-Leonard Corporation Retractable pressure die
DE3033950C2 (de) * 1980-09-10 1985-06-27 Thomas Peter Dipl.-Wirtsch.-Ing. 6120 Michelstadt Lang Rohrbiegemaschine
JPS57193237A (en) * 1981-05-22 1982-11-27 Chiyoda Kogyo Kk Both right and left bending type bender

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104858269A (zh) * 2015-04-22 2015-08-26 罗瑞运动用品（昆山）有限公司 一种滑板车圆管弯管机

Also Published As

Publication number Publication date
EP0108193A2 (de) 1984-05-16
DE3240799C2 (ja) 1988-11-17
EP0108193B1 (de) 1986-12-30
JPH0431765B2 (ja) 1992-05-27
DE3240799A1 (de) 1984-05-17
CA1206082A (en) 1986-06-17
JPS5987929A (ja) 1984-05-21
DE3368539D1 (en) 1987-02-05
US4563891A (en) 1986-01-14
EP0108193A3 (en) 1984-07-25

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