EP0198779A2 - Zieheisenvorrichtung zum Formen von Rohren aus einem Metallband - Google Patents

Zieheisenvorrichtung zum Formen von Rohren aus einem Metallband Download PDF

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Publication number
EP0198779A2
EP0198779A2 EP86430010A EP86430010A EP0198779A2 EP 0198779 A2 EP0198779 A2 EP 0198779A2 EP 86430010 A EP86430010 A EP 86430010A EP 86430010 A EP86430010 A EP 86430010A EP 0198779 A2 EP0198779 A2 EP 0198779A2
Authority
EP
European Patent Office
Prior art keywords
mandrel
die
tube
block
conduit
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
EP86430010A
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English (en)
French (fr)
Other versions
EP0198779A3 (en
EP0198779B1 (de
Inventor
Annie épouse Shahum Ketanedjian
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.)
Shahum Christian
Original Assignee
Shahum Christian
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 Shahum Christian filed Critical Shahum Christian
Priority to AT86430010T priority Critical patent/ATE64701T1/de
Publication of EP0198779A2 publication Critical patent/EP0198779A2/de
Publication of EP0198779A3 publication Critical patent/EP0198779A3/fr
Application granted granted Critical
Publication of EP0198779B1 publication Critical patent/EP0198779B1/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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form

Definitions

  • the present invention relates to a die device for forming a tube from a metal strip.
  • the technical sector of the invention is that of tools used in the manufacture of tubular objects, in particular jewelry or similar articles.
  • the present invention relates to a new technique for using tubes regardless of their section: circular, oval, polygonal or other ...
  • the objective to be achieved is the manufacture of straight or curved tubes, from a metal ribbon or an alloy of common or precious metals, produced in a single pass by pulling said ribbon by means of a tool ensuring the joining of turned edges of the ribbon in a perfectly straight line.
  • Another objective is to produce a tube by mechanical traction of the ribbon being formed in order to obtain tube wound in a circular, oval or other manner ...
  • the die device for forming a tube from a metal strip, which is characterized in that it comprises a long die block, comprising, in the direction of the length and the passing right through, a conduit comprising an inlet orifice of larger section and an outlet orifice of smaller section and whose generatrices converge from the inlet orifice to the outlet orifice and in that the conduit is, in line with the inlet orifice, of a width slightly greater than that of said metal strip.
  • Said block is of a polygonal cross section and the inlet orifice and the outlet orifice of the conduit open on two plane faces parallel to each other and perpendicular to the longitudinal axis of said block.
  • the die block comprises a guide fin extending over all or part of the length of the duct and projecting inside the latter, which fin is parallel to the longitudinal axis of said duct and has the function of guiding the upturned edges of the metal strip during the drawing in order to obtain the joining of said edges in a rectilinear manner.
  • the die block includes a removable guide plate, fixed to the face of the block where the inlet opening of the conduit opens, which plate partially obstructs said orifice and has a straight edge located on the side and close to the longitudinal axis of the duct and on which edge the metal strip rests, this plate having the function of guiding said strip and of opposing its twisting during drawing, in order to obtain the joining of turned edges of the ribbon straight.
  • the die block comprises two removable guide plates fixed to the face of the block where said inlet opening of the duct opens, which plates almost completely obstruct said orifice and have a straight edge so that said edges are located on either side and close to the longitudinal axis of the conduit, which edges are spaced from each other by a distance slightly greater than the thickness of the metal strip, these two plates having the function of guiding said ribbon and of opposing its twisting during the drawing in order to obtain the joining of the turned edges of the ribbon in a rectilinear manner.
  • At least one of the plates comprises, on said rectilinear edge a notch located at the right of the longitudinal axis of the conduit to allow the passage of a metal wire constituting a core around which the metal ribbon is wound during drawing to form the tube.
  • the die block comprises inside the duct, a guide rod constituting a fixed core, coaxial with the duct and carried by a support plate fixed to the part of the block where the orifice opens out.
  • a guide rod constituting a fixed core, coaxial with the duct and carried by a support plate fixed to the part of the block where the orifice opens out.
  • 'inlet of the conduit and whose free end of said core extends slightly outside the outlet of the conduit and is of an outer contour parallel to the inner contour of said orifice, a space substantially equal to the thickness of the metallic strip being reserved between the core and the outlet opening of the conduit.
  • the angle formed by the wall of the conduit and the face where the outlet orifice of the die block opens is softened to avoid any metal tearing during the traction exerted on the strip.
  • said die block is removably mounted on a carriage movable horizontally in front of a horizontal mandrel driven in rotation by motor means and around which the mandrel winds the tube, coming from the die block, substantially perpendicular to the face of the block where the outlet opening of the conduit opens, which carriage is pivotally mounted about a horizontal axis parallel to the mandrel and comprises means for positioning it in inclination, so that the tube from the die block tangent to said mandrel.
  • Said drive means consist of a geared motor or a geared motor-variator fixed to a rectangular base whose output shaft of the reducer extends horizontally and said base comprises, opposite the output shaft, a fixed headstock having a point coaxial with said gearbox output shaft and in that the mandrel is removably placed between said gearbox and said headstock and is locked in rotation by one of its ends on the gearbox output shaft and is supported at its other end by said tip, which is mounted movable along its longitudinal axis in a horizontal housing reserved in said headstock, which comprises means for immobilizing the tip in position.
  • Said carriage is carried by a support mounted adjustable on the base so as to be able to be moved towards or away from the mandrel and comprises means for immobilizing it in position relative to the mandrel.
  • Said support consists of a base plate and two end posts perpendicular to said plate.
  • the carriage is made up of a die-carrying plate comprising two slides which cooperate with a set of two slides which are parallel to one another and anchored in two end pieces, said set of slides being pivotally mounted around two horizontal and coaxial shafts and carried by said amounts of ends of the support.
  • Said set of carriage-carrier slides is mounted adjustable in height on the two uprights of the support, which uprights have holes distributed over their height and capable of receiving said shafts around which said set of slides pivots.
  • the means for positioning the carriage and said set of slides in inclination consist of two abutment screws screwed at the end of two support legs pivotally mounted vertically on one or the other of said support uprights and immobilizable by position, which screw-stops are brought into contact with one or the other of the end pieces in which the slides are anchored and on either side of the pivot axis of said set of slides.
  • Said mandrel comprises, at its periphery, a groove wound in a helix with contiguous turns and over the length of the mandrel, the cross section of the groove of which corresponds to that of the tube coming from the filling.
  • the mandrel comprises a central core on which are attached two half-shells of an external semi-elliptical contour and means for assembling the half-shells and the core, which half-shells in place on said core are spaced from each other by a distance substantially equal to the width of the tube, so that after removal of the core can be released from the mandrel the tube wound in an ellipse.
  • the tube For the attachment of the tube to the mandrel, the latter comprises at one of its ends, a radial mortise opening at its periphery and intended to receive a stopper for driving the tube coming from the die block, which stopper has a hole in which the tube is passed and means for fixing the tube to the cleat.
  • the die device according to the invention thus makes it possible to produce the tube by rolling, without elongation of the metal ribbon or of alloy of common or precious metals, with a line of junction of the turned edges of the ribbon perfectly straight, without twisting or other defect .
  • FIGS. 1 and 2 of the drawing illustrate a die block according to the invention 1 in one embodiment. This is in the form of a parallelepiped of square section.
  • Said block could adopt any other external shape and thus be of any polygonal section or even be cylindrical.
  • Said block 1 comprises, in the direction of its length, a conduit 1 a having an inlet orifice of larger section 1b, for example circular which opens onto a face 1 c of the block and an outlet orifice 1d, of smaller circular section, which opens onto another face 1 e, parallel to said face 1 c.
  • the orifices 1b / 1d are joined by generators 1f which converge from the inlet orifice 1 towards the outlet orifice, so that the duct is of a frustoconical shape.
  • the die block is designed to communicate the most diverse shapes to the metallic ribbon, to generate tubes of all shapes, for example of a circular, rectangular, square, triangular, star, heart-shaped or other cross section.
  • the shape of the tube is given by the outlet port 1d.
  • the inlet of said block is, in one embodiment, of a circular cross section whose diameter is slightly greater than the width of the metal strip 2 which is shown in phantom in Figure 2.
  • the die block 1 comprises on the side of the inlet 1b and applied against the face 1 of the block, two 3/4 rectangular plates, which plates are by example fixed by means of screws 5 screwed into tapped holes reserved in the die block. These plates have rectilinear edges 3a / 4a which are spaced from each other by a distance d substantially equal to the thickness of the metal strip 2.
  • the ribbon 2 is formed as a point, as illustrated in FIG. 3 and is passed between the two plates 3/4.
  • the pointed end 2a which opens out from the outlet orifice 1d is gripped by means of pliers and the ribbon 2 is pulled manually until the die gives the ribbon the shape of the tube.
  • This can be obtained manually by continuing to exert traction on the metal strip or can be mechanically wound around a mandrel as will be explained below.
  • One of the plates may include a notch 3b reserved on the rectilinear edge 3a, which notch adopts for example the shape of a Vee and is located in line with the longitudinal axis 1a. This notch allows the passage of a metal wire (not shown) which constitutes a core around which the metal ribbon is wound.
  • the two 3/4 plates have the function of guiding the ribbon 2 and of opposing its twisting during traction in order to obtain the joining of the turned edges of the ribbon in a perfectly rectilinear manner.
  • the lateral edges 2c / 2d of the tape guided by the duct wall are rolled towards one another to come together by exiting through the outlet orifice 1 d to the desired shape of the tube which is communicated by said orifice 1d.
  • the die block 1 may have only one plate and the ribbon 2 is then guided by the single straight edge 3a of the plate 3.
  • FIG. 4 Another embodiment of the die block according to the invention is given in Figures 4 and 5.
  • the die block 1 is similar to that which has just been described with reference to Figures 1 and 2.
  • the outlet port 1 g which opens onto the face 1e is for example of a circular cross section.
  • the inlet 1h which opens onto the face 1b, is of a generally elliptical section so that the duct 11 is of a generally frustoconical shape.
  • the inlet 1 is such that its major axis 1h 1 is slightly larger than the width of the metal strip.
  • the duct 11 comprises a small 1 m fin, for example 6 / 10ths of a millimeter thick, which fin extends for example over a part of the length of the duct 11 and protrudes inside the latter.
  • Said fin is born at the periphery of the outlet orifice 1g, is of zero height at the level of said orifice and extends inwardly parallel to the axis of the duct, progressing in height so that its longitudinal edge 1 m, is substantially perpendicular to the face 1g of the die block.
  • the purpose of this fin is to guide the upturned edges of the metal strip during the traction exerted on the strip in order to obtain the joining of said edges in a perfectly rectilinear manner.
  • the angle formed by the wall of the conduit 11 and the face 1e where the outlet orifice 1g opens out is softened to avoid tearing of metal during the traction exerted on the strip.
  • the outlet 1g has for this purpose a flat 1g, for example with a width of 8/10 of a millimeter and extending over the internal periphery of the orifice 1g.
  • FIG. 6 and 7 Another embodiment of the die block is illustrated in Figures 6 and 7.
  • the die block 1 is similar to those which have just been described with reference to Figures 1, 2, 4 and 5.
  • the outlet orifice 1n which opens onto the face 1e is for example of a rectangular cross section.
  • the inlet 1p is of a rounded outline so that the duct 1q is of a generally frusto-conical shape.
  • This comprises a fin 1 r in all points identical to the fin lm described with reference to FIG. 4.
  • the block comprises inside the conduit 1q a guide rod 6 which constitutes a fixed core coaxial with the conduit 1q and extending approximately over the half-length of the block, which core 6 extends a rod of greater cross section 6a, fixed to a rectangular support plate 7, fixed by means of screws 8, for example 2 in number, screwed into tapped holes reserved in the block 1.
  • the support plate 7 is applied to the face 1 b where the orifice d opens 'entry 1q.
  • the core 6 / 6a is perpendicular to the plate 7 and is fixed to the latter by means of screws 9.
  • the plate 7 is fixed on the side of the fin 1 r.
  • the core 6 is of a rectangular cross section and has an external contour parallel to the internal contour of the outlet orifice 1 of the conduit.
  • a space e of a value substantially equal to the thickness of the metal strip is reserved between the core 6 and the outlet orifice 1 to allow the passage of the tube at the outlet of the die block.
  • the core 6 extends slightly outside the orifice 1 n. Its function is to perfectly calibrate the tube.
  • the fin 1 r makes it possible to obtain, as has already been explained above, the junction of the edges of the ribbon in a perfectly rectilinear manner.
  • FIGS. 8, 9 and 10 of the drawing illustrate a die device 10 for pulling by winding the tube coming from the die block 1.
  • This die device comprises a rectangular base 11 on which is mounted at one end a motor-reducer or a motor-reducer-variator 12 extending at right angles to the base 11 and projecting therefrom.
  • the variator comprises a control member 13 with a dial 13a which gives indications which make it possible to calibrate the machine as a function of the actual revolutions of the output shaft of the reducer.
  • the motor is connected, by a cable 14, to a control box 15, itself connected to the sector by another cable 16.
  • the output shaft 12a of the gear motor 12 is hollow and extends horizontally and parallel to the longitudinal edges 11a of the base 11.
  • the base 11 Opposite the output shaft 12a of the reduction gear, the base 11 comprises a fixed headstock 17 in which is mounted a point 18 which is coaxial with said shaft 12a of the reduction gear.
  • the tip 18 is mounted adjustable in the headstock 17 in a horizontal cylindrical housing 17a, which crosses the headstock in the longitudinal direction of the base 11.
  • the point 18 extends a cylindrical axis 18a having the same diameter as the cylindrical housing 17a of the headstock 17 , which axis has a flat 18a ,.
  • the adjustment in position of the tip 18 on the headstock 17 is obtained by means of a pressure screw 19 screwed into a tapped hole reserved for the upper part of the headstock 17.
  • a removable mandrel 20 which comprises, at one end, a shaft end 20a which penetrates into the hollow shaft 12a of the reduction gear, the rotation drive being effected by the through a keyway 21.
  • the hollow shaft has a longitudinal groove in which is engaged a key secured to the shaft end 20a of the mandrel.
  • the mandrel has a conical hole 20b into which the tip 18 of the headstock penetrates.
  • the mandrel 20 is of an external shape which is a function of the objects which it is desired to obtain.
  • the mandrel 20 is cylindrical. It is smooth in the case of the manufacture of objects having a square or rectangular cross section.
  • the mandrel 20 comprises, at its periphery and over its almost length, a groove wound in a helix 20c with contiguous turns, the section of which corresponds to the external dimension of the tube. This groove provides a regular winding of the tube from the die block 1.
  • the device comprises a set of two slides 21/22, which are horizontal and parallel to each other and are embedded in two end pieces 23/24.
  • This assembly which adopts the shape of a rectangle, is pivotally mounted around two horizontal and coaxial shafts 25/26, which shafts are engaged in holes 27 reserved in the two uprights 28a / 28b of a support 28, in support on the base 11.
  • This support 28 consists of a rectangular base plate 28c at the ends of which said uprights 28a / 28b are fixed, which are perpendicular to said plate 28c.
  • the support is mounted to be movable so that it can be moved towards or away from the mandrel 20.
  • the base plate 28c has two lumens 28d, located on the side of the uprights 28a / 28b and perpendicular to the longitudinal edges of the plate 28c.
  • the support 28 in position on the base 11 is obtained by two screws 29 passed through the lumens 28d and screwed into tapped holes 11 b, reserved in the base 11.
  • the set of slides 21/22 is adjustable in height so that it can be positioned as a function of the size of the mandrel 20. This adjustment is made possible by several holes 27 distributed over the height of the uprights 28a / 28b and through which the shafts have passed. 26/27.
  • a carriage 30 On the set of slides 21/22 is slidable a carriage 30, which is thus horizontally displaceable in front of said mandrel 20.
  • This carriage consists of a die-carrying plate 30a to which two slides 30b / 30c are fixed to screw means 31.
  • the slides are of the linear rolling type.
  • the die holder plate 30a comprises a square section housing 30a, intended to receive the die block 1 which is of a corresponding cross section.
  • the set of slides 21/22 / carriage 30, is pivotally mounted around of said trees 26/27.
  • the positioning in inclination of the carriage 30 and of all of the slides 21/22 is obtained by two stop screws 32/33 screwed into threads reserved for the end of two support lugs 34/35, pivotally mounted in a plane vertical around two screws 36/37 screwed into the upright 28b of the support 28.
  • the support legs 34/35 are first positioned by pivoting them around the previously loosened screws 36/37 so as to place the stop screws 32 / 33 on either side of the pivot axis of the set of slides 21/22, tighten the screws 36/37 and act on the stop screws 32/33 until stalling at the inclination desired said set of slides 21/22 carrying the carriage 30.
  • the tube first formed by manual traction in the die block 1, is fixed to the mandrel 20 by means of a driving cleat, two embodiments of which are given in FIGS. 13 and 14
  • the mandrel 20 has at its end located on the side of the shaft end 20a, a radial mortise 20d of a rectangular cross section corresponding to that of the cleat.
  • This 38 in the embodiment of Figure 13, is in the form of a small rectangular parallelepiped and has a hole 38a, passing right through, and through which the free end of the tube.
  • the tube is fixed to the cleat 38 by means of a pressure screw 39.
  • the cleat 40 similar to the cleat 38, has a hole 40a passing right through it through which the tube has passed and a second hole 40b, perpendicular and adjacent to the hole 40a and in which hole 40b has passed a clamping screw 41, screwed into a tapped hole 20e made in the bottom of the mortise 20d. Under the effect of the tightening of the screw 41, the cleat is moved in the mortise 20d, which has the effect of blocking the tube between the cleat 40 and the periphery of the mandrel 20.
  • the gear motor is then actuated to drive the mandrel in rotation and the tube, coming from the die 1, is wound around the mandrel with contiguous turns.
  • the free mounting on slide of the carriage 30 allows the winding of the tube over the length of the mandrel 20.
  • the die block 1 is kept engaged in the housing 30a of the carriage under the effect of the traction exerted on the tube.
  • the withdrawal of the tube is obtained by "unscrewing" the tube winding.
  • the mandrel 42 consists of a core, for example cylindrical 42a comprising at one end a shaft end 42b engaged in a bore 42c and pinned to the by means of a mechanical pin 43 engaged in holes 42d / 42e extending diametrically to the core 42a and to the end of the shaft 42b.
  • the core has a coaxial conical housing 42f.
  • the mandrel also comprises two half-shells 42 1/42 2 an outer contour, for example substantially half-elliptical and an inner outline substantially semi-cylindrical, so as to perfectly fit on the cylindrical core 42a. The two half-shells are in opposition so that, as shown in FIG.
  • the mandrel is of an elliptical cross section. They extend over the quasi-length of the core 42a and comprise, at their ends, semi-annular shoulders with a substantially semicircular external contour 42a, / 42, b -42 2 a / 42 2 b.
  • the assembly of the two half-shells 42, / 42 2 on the core 42a is carried out by means of a pin 44, engaged free in a cylindrical conduit 42g, extending diametrically to the core 42a and corresponding with two holes 42h / 42j reserved in the annular shoulders 42, a / 42, a.
  • a ring 45 comprising a first bore 45a, of a diameter slightly greater than the diameter of the core 42a and a second concentric bore 45b slightly greater than the external diameter of the shoulders 42 1 a / 42 2 a, has the function of maintaining both the two half-shells and maintain the pin 44.
  • the depth of the bore 45b is substantially equal to the length of said shoulders.
  • a second ring 46 identical to the ring 45, overlaps the shoulders 42 1 b / 42 2 b.
  • This ring 46 has a atésage 46a of a diameter slightly greater than that of the core 42a and a second concentric bore 46b, slightly larger than the outer diameter of shoulders 42 1b / 42 2 b.
  • the ring 46 is held in position by a pressure screw 47, screwed into a tapped radial hole 46c and coming to bear on the core 42a.
  • the ring 45 is held by a screw 48 screwed into a tapped radial hole 45c and bearing on the core 42a.
  • the two half-shells 42 1/42 2 are spaced from each other by a distance d, substantially equal to the width of the tube, for example a cylindrical tube: its diameter.
  • They include, at their periphery, a helical groove 42 1 c / 42 2 c in which the tube from the die block 1 is wound.
  • the screw 47 is loosened and the ring 46 is slid over the core until the shoulders 42, b / 42, b are released.
  • the screw 48 is then loosened and the other ring 45 is slid to release the shoulders 42 1 a / 42 2 has half-shells and the pin 44 which falls by gravity escapes.
  • the ring 42a is removed by sliding it relative to half-shells 42 1/42 2.
  • the said half-shells are then brought closer until their longitudinal edges 42, d / 42 2 d come into contact with one another and the tube winding is removed.
  • One of the half-shells 42 comprises a radial mortise 42, d for placing therein one of the drive lugs 38/40 described with reference to FIGS. 13 and 14.
EP86430010A 1985-04-17 1986-04-14 Zieheisenvorrichtung zum Formen von Rohren aus einem Metallband Expired - Lifetime EP0198779B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86430010T ATE64701T1 (de) 1985-04-17 1986-04-14 Zieheisenvorrichtung zum formen von rohren aus einem metallband.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8505914A FR2580526A1 (fr) 1985-04-17 1985-04-17 Dispositif de filiere pour rouler par etirage en fer plat et obtenir un element tubulaire
FR8505914 1985-04-17
CA000512049A CA1299925C (en) 1985-04-17 1986-06-20 Die device for forming tube from a metal band

Publications (3)

Publication Number Publication Date
EP0198779A2 true EP0198779A2 (de) 1986-10-22
EP0198779A3 EP0198779A3 (en) 1987-11-25
EP0198779B1 EP0198779B1 (de) 1991-06-26

Family

ID=25671032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86430010A Expired - Lifetime EP0198779B1 (de) 1985-04-17 1986-04-14 Zieheisenvorrichtung zum Formen von Rohren aus einem Metallband

Country Status (10)

Country Link
US (1) US4783981A (de)
EP (1) EP0198779B1 (de)
JP (1) JPS61262422A (de)
AU (1) AU583369B2 (de)
BR (1) BR8601713A (de)
CA (1) CA1299925C (de)
DE (1) DE3679931D1 (de)
ES (1) ES8703096A1 (de)
FR (1) FR2580526A1 (de)
MX (1) MX170508B (de)

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GB2225925B (en) * 1988-11-25 1993-11-17 Acme Jewellery Ltd Jewellery
GB2256576B (en) * 1988-11-25 1993-11-17 Acme Jewellry Ltd Jewellery

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JPH078378B2 (ja) * 1989-05-12 1995-02-01 住友金属工業株式会社 製管方法
US5728015A (en) * 1996-06-12 1998-03-17 Patton; David L. Basketball goal with expanded rim and drain hole
DE10106195A1 (de) * 2001-02-10 2002-08-14 Nexans France S A Verfahren zur Herstellung längsnahtgeschweißter Rohre
US6688513B2 (en) 2000-10-20 2004-02-10 Nexans Process for producing longitudinally welded tubes
CN102873119B (zh) * 2012-10-22 2014-05-14 江苏华程工业制管股份有限公司 矩形扁钢管的拉伸模
RU2547058C1 (ru) * 2013-09-30 2015-04-10 Открытое акционерное общество "Электростальский завод тяжелого машиностроения" Устройство для производства изделий из листового металла
US10322368B2 (en) * 2016-02-23 2019-06-18 The Boeing Company Centrifugal air separator coil manufacturing tools and methods
GB2560689A (en) * 2016-12-16 2018-09-26 Simpson Strong Tie Co Inc Tool and method for forming a strip of material

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DE597120C (de) * 1934-05-17 F W Cremers Vorrichtung zur Herstellung von Rohren aus Blechstreifen
DE670145C (de) * 1936-02-11 1939-01-12 Pforzheim Metallschlauch Vorrichtung zur Herstellung von duennwandigen Rohren mit Laengsnaht
US2229149A (en) * 1939-02-13 1941-01-21 Armbrust Chain Company Ornamental chain machine
US3001569A (en) * 1958-04-29 1961-09-26 Flexonics Corp Tube forming tool
US3225579A (en) * 1961-01-23 1965-12-28 Henry Miller Spring And Mfg Co Squaring spring flat for coiling machine
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FR2507447A1 (fr) * 1981-06-12 1982-12-17 Gori & Zucchi Spa Procede permettant la formation d'un produit semi-ouvre essentiellement filiforme pour la production de chaines d'ornement et autres emplois, equipement pour sa mise en oeuvre et produit semi-ouvre obtenu

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2225925B (en) * 1988-11-25 1993-11-17 Acme Jewellery Ltd Jewellery
GB2256576B (en) * 1988-11-25 1993-11-17 Acme Jewellry Ltd Jewellery

Also Published As

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ES553889A0 (es) 1987-02-16
FR2580526A1 (fr) 1986-10-24
MX170508B (es) 1993-08-07
EP0198779A3 (en) 1987-11-25
ES8703096A1 (es) 1987-02-16
EP0198779B1 (de) 1991-06-26
DE3679931D1 (de) 1991-08-01
JPS61262422A (ja) 1986-11-20
AU5597086A (en) 1986-11-06
US4783981A (en) 1988-11-15
AU583369B2 (en) 1989-04-27
BR8601713A (pt) 1986-12-16
CA1299925C (en) 1992-05-05

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