EP0043750A1 - Vorrichtung zum Formen von Rohren mit kleinem Durchmesser - Google Patents

Vorrichtung zum Formen von Rohren mit kleinem Durchmesser Download PDF

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Publication number
EP0043750A1
EP0043750A1 EP19810401002 EP81401002A EP0043750A1 EP 0043750 A1 EP0043750 A1 EP 0043750A1 EP 19810401002 EP19810401002 EP 19810401002 EP 81401002 A EP81401002 A EP 81401002A EP 0043750 A1 EP0043750 A1 EP 0043750A1
Authority
EP
European Patent Office
Prior art keywords
forming
roller
jaws
jaw
frame
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.)
Ceased
Application number
EP19810401002
Other languages
English (en)
French (fr)
Inventor
Jean-Pierre Loizon
Jean Rousselin
Christian Souvant
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.)
ETS Y JOUANEL SA
Original Assignee
ETS Y JOUANEL SA
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 ETS Y JOUANEL SA filed Critical ETS Y JOUANEL SA
Publication of EP0043750A1 publication Critical patent/EP0043750A1/de
Ceased 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
    • B21D5/143—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers making use of a mandrel

Definitions

  • the present invention relates to a machine for forming small diameter pipes.
  • the invention applies more particularly to the forming of pipes by rolling.
  • the rolling diameter is of the order of three to four times the diameter of the forming roller which, of course, does not may fall below a minimum value of the order of 80 to 100 mm.
  • the minimum rolling diameter is between approximately 250 and 400 mm, which excludes the formation of small diameter pipes, in particular less than 100 mm.
  • the forming is carried out by a forming roller of small diameter strongly applied on a large roller coated with polyurethane. With this machine, tubes of diameter between 100 and 130 mm can be obtained.
  • the forming is carried out by three polyurethane rollers, also distributed in a triangle around a forming roller of small diameter, this machine making it possible to obtain tubes of good cylindricity but whose minimum rolling diameter is determined by the diameter of the polyurethane pressure rollers which come into mutual contact when descending into small diameters.
  • the drive is carried out by the lower rollers, the central roller being simply mounted floating.
  • the upper rollers are mounted on a sliding support and to move the central roller it is advisable act by pressing it by one of the upper rollers.
  • the object of the present invention is to provide a machine making it possible to form pipes of small diameter, in particular less than 100 mm, with perfect cylindricity, said machine having to be robust and of low production cost.
  • the machine for forming pipes of small diameter in particular by rolling, comprises a frame, a forming roller rotatably mounted on the frame, means for driving said roller in rotation, forming jaws arranged around the roller. former and means for moving said jaws relative to the roller, these two jaws being diametrically opposite with respect to the forming roller, one being mounted fixed and the other movable on the frame, the forming roller being pivotally mounted on the frame so as to be able to move away from the fixed jaw.
  • the movable jaw is carried by at least one support provided with actuating means and said support is pivotally mounted on the frame;
  • the movable jaw supports are levers carrying the jaw at one end and the actuation means are jacks connected to the other end of said levers;
  • the machine comprises adjustment slides in which the forming jaws are slidably mounted and means for adjusting the spacing of the jaws are associated with said slides;
  • each forming jaw is formed from a block rigid extending along the forming roller over substantially its entire length and each jaw has a V-groove opening towards the forming roller;
  • the forming roller is provided with means for hooking the edge of a sheet to be formed and these means comprise a longitudinal tangential slot, penetrating into the pressing roller.
  • the machine comprises a frame 1 on which is mounted a rotary forming roller 2 extending over the entire length of said frame and projecting laterally in overhang on one side thereof, said roller being articulated on the frame around a horizontal axis 4 and having its cantilevered end mounted in a fixed bearing 5 fixed at the end of an arm 3 extending in the extension of the roller 2.
  • the forming roller 2 essentially consists, conventionally, of a central forming mandrel 9 which extends along the frame 1 between a removable lateral bearing 10 situated on the right in FIG. 1 and a rotary sleeve 11 on the left in which the corresponding end of the mandrel is fitted and keyed, said sleeve 11 forming the part of the roller located in a cantilever articulated around the axis 4 and mounted in the fixed bearing 5 On this sleeve 11 is keyed a toothed wheel 12 which meshes with a complementary wheel 13 mounted on the output shaft of a geared motor group 14.
  • These toothed wheels 12 and 13 have a sufficient toothing module to allow the mandrel to be raised by more or less deep engagement of the teeth between them.
  • a slide 15 which extends over the entire width of said frame, and in which is slidably mounted upwards a so-called fixed jaw 16 movable vertically and resting horizontally at the end on two lower adjustment screws 17 and 18 crossing perpendicularly the table of the frame 1 and screwed into it.
  • the fixed jaw 16 extends under the forming mandrel 9 and directly above it while above said mandrel, and in a position diametrically opposite to that of the fixed jaw, extends a movable jaw upper 19 slidingly mounted at its two ends in vertical slides 20 and 21 supported vertically above the mandrel 9 by lever-shaped supports 22 articulated around horizontal axes 23 at the upper end of vertical uprights 24 fixed on the frame table 1.
  • the ends of the levers 22 opposite the slides with respect to the articulation axes 23 are articulated by means of horizontal axes 25 and yokes 26 at the upper end of actuator rods 27 and 28 for actuating the movable jaw oriented vertically and articulated at their base on the frame 1.
  • the movable jaw 19 is supported at its two ends, plumb with the mandrel 9, by vertical screws for adjusting the spacing of the jaws 29 and 30 which pass through the bottom of the slides 20 and 21 and are screwed therein.
  • the two fixed 16 and movable jaws 19 both have a longitudinal V-shaped groove, respectively 31 and 32, the inclined sides of which extend parallel to the mandrel which they envelop.
  • the opening angle of the V of the grooves of the two jaws is chosen between 90 and 120 ° but, of course, this choice is not imperative.
  • the mandrel 9 has a tangential slot 33 (FIG. 3) extending parallel to the axis of the mandrel over the entire length of the jaws 16 and 19.
  • a sheet previously cut to the dimensions of the pipe to be rolled is presented along the mandrel 2 of the machine and the front edge of said sheet is engaged in the tangential slot 33 of the mandrel.
  • the latter is then driven in rotation by the geared motor 14 via the two toothed wheels 12 and 13, and the sleeve 11 carrying with it the sheet which is forced to pass between said mandrel and the sides of the grooves in V 31 and 32 of the two jaws 16 and 19.
  • the rolling of the sheet between the mandrel 2 and the sides of the V-grooves of the two jaws 16 and 19 ensures the bending and winding of said sheet around the mandrel.
  • the bearing 10 is disassembled and opened to release the end of the mandrel 2 and the rod of the lateral jack 7 is retracted ensuring the lifting of the mandrel 2 above the fixed jaw 16 thus allowing disengagement by sliding the tube laterally from the side of the machine opposite to the gear motor 14 and to the jack 7.
  • the machine according to the invention makes it possible to produce tubes with a diameter of less than 100 mm with perfect cylindricity and a production rate higher than that obtained on currently known machines.
  • the system according to the invention also makes it possible to form a large number of tube diameters with the same mandrel.
  • a forming machine according to the invention can have a number of jaws greater than two or the groove formed in said jaws can have a section of shape different from a V such as for example a semi-circular shape.
  • actuating cylinders for opening and closing the jaws and the actuator for lifting the mandrel 2 can be replaced by any equivalent means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP19810401002 1980-06-26 1981-06-22 Vorrichtung zum Formen von Rohren mit kleinem Durchmesser Ceased EP0043750A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8014277A FR2485407A1 (fr) 1980-06-26 1980-06-26 Machine a former les tuyaux de faible diametre
FR8014277 1980-06-26

Publications (1)

Publication Number Publication Date
EP0043750A1 true EP0043750A1 (de) 1982-01-13

Family

ID=9243570

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810401002 Ceased EP0043750A1 (de) 1980-06-26 1981-06-22 Vorrichtung zum Formen von Rohren mit kleinem Durchmesser

Country Status (2)

Country Link
EP (1) EP0043750A1 (de)
FR (1) FR2485407A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110711803A (zh) * 2019-10-14 2020-01-21 湖北精工钢结构有限公司 一种垫板卷圆工装
CN110834038A (zh) * 2019-11-19 2020-02-25 雷朋电气集团有限公司 一种母线加工机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1634661A (en) * 1925-03-06 1927-07-05 Sachs Gmbh R Contrivance for rolling zinc and other sheet-metal hollow ware
US1645239A (en) * 1924-08-28 1927-10-11 Hume Walter Reginald Apparatus for the manufacture of pipes and the like from metal sheets or plates
FR711546A (fr) * 1931-02-18 1931-09-11 Pont A Mousson Fond Perfectionnements aux machines pour la fabrication des tubes
DE584593C (de) * 1931-07-18 1933-09-21 E H Hugo Junkers Dr Ing Vorrichtung zur Herstellung zylindrischer Hohlkoerper u. dgl. aus Blechstreifen
US1968455A (en) * 1932-06-30 1934-07-31 Jones Lloyd Method and apparatus for forming pipe
FR2097182A7 (en) * 1970-07-04 1972-03-03 Ferranti Albino Sheet metal cylinders - bending of long lengths
US3738149A (en) * 1971-10-01 1973-06-12 B Archer Pipe forming apparatus and method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1645239A (en) * 1924-08-28 1927-10-11 Hume Walter Reginald Apparatus for the manufacture of pipes and the like from metal sheets or plates
US1634661A (en) * 1925-03-06 1927-07-05 Sachs Gmbh R Contrivance for rolling zinc and other sheet-metal hollow ware
FR711546A (fr) * 1931-02-18 1931-09-11 Pont A Mousson Fond Perfectionnements aux machines pour la fabrication des tubes
DE584593C (de) * 1931-07-18 1933-09-21 E H Hugo Junkers Dr Ing Vorrichtung zur Herstellung zylindrischer Hohlkoerper u. dgl. aus Blechstreifen
US1968455A (en) * 1932-06-30 1934-07-31 Jones Lloyd Method and apparatus for forming pipe
FR2097182A7 (en) * 1970-07-04 1972-03-03 Ferranti Albino Sheet metal cylinders - bending of long lengths
US3738149A (en) * 1971-10-01 1973-06-12 B Archer Pipe forming apparatus and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110711803A (zh) * 2019-10-14 2020-01-21 湖北精工钢结构有限公司 一种垫板卷圆工装
CN110834038A (zh) * 2019-11-19 2020-02-25 雷朋电气集团有限公司 一种母线加工机
CN110834038B (zh) * 2019-11-19 2024-04-16 雷朋电气集团有限公司 一种母线加工机

Also Published As

Publication number Publication date
FR2485407B1 (de) 1983-11-18
FR2485407A1 (fr) 1981-12-31

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LU NL SE

17P Request for examination filed

Effective date: 19820415

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19841119

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SOUVANT, CHRISTIAN

Inventor name: LOIZON, JEAN-PIERRE

Inventor name: ROUSSELIN, JEAN