WO2012149919A1 - Procédé et dispositif pour élargir des pièces tubulaires cylindriques - Google Patents

Procédé et dispositif pour élargir des pièces tubulaires cylindriques Download PDF

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Publication number
WO2012149919A1
WO2012149919A1 PCT/DE2012/000315 DE2012000315W WO2012149919A1 WO 2012149919 A1 WO2012149919 A1 WO 2012149919A1 DE 2012000315 W DE2012000315 W DE 2012000315W WO 2012149919 A1 WO2012149919 A1 WO 2012149919A1
Authority
WO
WIPO (PCT)
Prior art keywords
spreading
mold
cylinder tube
blades
tube piece
Prior art date
Application number
PCT/DE2012/000315
Other languages
German (de)
English (en)
Inventor
Steffen RÖTZ
Norbert Lentz
Original Assignee
Cantec Gmbh & Co. Kg
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 Cantec Gmbh & Co. Kg filed Critical Cantec Gmbh & Co. Kg
Publication of WO2012149919A1 publication Critical patent/WO2012149919A1/fr

Links

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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2646—Of particular non cylindrical shape, e.g. conical, rectangular, polygonal, bulged
    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/02—Making hollow objects characterised by the structure of the objects
    • B21D51/10—Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects

Definitions

  • the invention relates to a method for expanding cylinder tube pieces, in particular can blanks, by means of a spreading device and a number of mold blades, which are moved radially by means of the spreading device.
  • the invention further relates to a device for expanding cylindrical pipe sections, in particular can blanks with a spreading device, by means of a number of a plurality of mold blades is radially movable and with which the clamped in a holder pipe section is widened.
  • beverage or tin cans is used, for example, to achieve a shapely design.
  • the can shape adapts to the outer contour of the mold lamellae used, so that shapes deviating from the cylindrical shape but rotationally symmetrical in cross-section can also be created.
  • bead or wave profiles or the like can be incorporated.
  • the present invention also covers such expansion machines, with which several can blanks can be expanded.
  • Such an expanding machine is described in WO 96/20798.
  • the Expandierautomat has a continuously rotating turret with a variety of expanding tools on which segments (mold blades) are provided, which are guided radially. For this serve groove-like depressions in which guide feet of the segments can run fit. Further, a spring bolt is provided on a guide foot, which presses the segment radially inwardly.
  • CONFIRMATION COPY tion of the segments spiral springs are provided, which are arranged in the guide holder perpendicular to the longitudinal axis of the device.
  • a disadvantage of the prior art known from the two latter documents is that the device has a relatively large diameter, based on the diameter of the cylinder to be flared, due to the necessary length of the linear guide of the segments, which is particularly appropriate in a multiple arrangement in rotary machines large and therefore expensive machine leads.
  • the system is overdetermined, since the vertical position of the form lamellae is determined on the one hand by the linear guide and on the other hand by the Koni conical rod in abutment. Such overdetermined systems must always be made very accurately, since only small deviations from the optimal shape lead to a stiffness or even jamming of the mold blades and thus to greater wear.
  • DE 10 2008 064 320 A1 describes a device of the type mentioned, in which the form lamellae are rotatably mounted on rockers, which are in turn arranged at least indirectly rotatably on a posture.
  • the spreading device used is a conical rod which is guided longitudinally axially and is arranged coaxially with respect to the form lamellae. This results in a device of my a radially very space-saving design without the disadvantages described above.
  • the device according to DE 10 2008 064 320 A1 can work with a high clock rate, is also wear and operate with a low energy consumption.
  • the device has the disadvantage that when widening on the molded cylinder tube piece only the areas corresponding to the formation of the mold blade are molded true to form, which rest against the mold blades until the end of the expansion process.
  • cylinder tube pieces In between, however, cylinder tube pieces have a linear or substantially linear (flat) contour.
  • the method and the device should be easy to handle, enable high cycle rates and in particular ensure the production of can blanks which are circular in cross-section.
  • the object is achieved by the method according to claim 1 and the device according to claim 4.
  • the basic idea of the present invention is that, first of all, in a first expansion passage, the form blades are moved radially outward, the cylinder tube piece being widened to the desired dimension. Subsequently, the mold blades are moved back again, wherein it only matters that the mold blades are no longer in contact with the cylinder tube piece inner wall. Thereafter, the cylinder tube piece or the device with the mold blades are rotated by an angle of rotation of 360 (2 n) about its longitudinal axis, before the mold blades are moved again in a second expansion gear to the same extent as in the first expansion gear radially outward.
  • the number of mold lamellae used is designated by "n.” If it is preferable to use twelve mold lamellae for spreading, the relative movement between the cylinder tube piece and the device with the mold lamellae results in a rotation angle of 15 °. Of course, with twelve mold lamellae rotations of 45 °, 75 °, 105 °, etc. It is essential that in a second expansion process the mold blades subsequently form the areas of the cylinder tube piece which had no direct contact with the mold laminations at the end of the first expansion passage.
  • the preferred expansion dimensions are approximately 20% (based on the initial dimension), since, moreover, the flow limits of the blanks are exceeded and cracking is imminent.
  • can blanks with a diameter of 65 mm can be expanded by means of twelve segments to a diameter of 78 mm. With larger can diameters can also more than twelve
  • Mold segments are used.
  • the expansion of the can is carried out successively in several double spreading processes, i. H. that the spreading process described in claim 1 is used for a first expansion to a level which is below the desired final dimension, after which already during the first spreading process (as an intermediate step) a circular shape results, which then expands in a second step to a final dimension and rounded accordingly.
  • the spreading process described in claim 1 is used for a first expansion to a level which is below the desired final dimension, after which already during the first spreading process (as an intermediate step) a circular shape results, which then expands in a second step to a final dimension and rounded accordingly.
  • the inventive device not only has a holder for the pipe sections and a spreader and a number of multiple mold blades, but in addition a rotating device with which either the holder for the pipe section or the spreading of the mold blades and spreading tool are rotatable, so that the desired rotations of 3607 (2 n) are adjustable.
  • the rotational movement can be forced mechanically or using the necessary control devices for motion synchronization by means of electrical, pneumatic or hydraulic actuators.
  • FIG. 2 is a plan view of an inserted into a cylinder tube piece spreading device
  • Fig. 4 is a plan view of the cylinder tube piece and the closed again
  • FIG. 5 shows the same view as FIG. 4 after relative rotation of the spreading device to the expanded cylinder tube piece
  • Fig. 6 is a plan view of the arrangement of FIG. 5 after renewed second
  • Fig. 7 is a plan view of the spreader and the expanded
  • the spreading device shown in Fig. 1 is in principle from the
  • spreading devices can also be used in the context of the present invention, which have a different structure known from the prior art, as described for example in WO 96/20798 A1 or WO 96/40457 A1.
  • the device shown in Fig. 1 for expanding pipe sections consists essentially of the form of slats 2, 2 ', which in the case shown coaxial with the Axis A are stored, as well as the centrally arranged thereon cone 3, the longitudinal axial to the axis A in the direction of arrow 4 can be guided.
  • the cone 3 has two cone-shaped areas 5, 5 ', which bear against the mold blades 2, 2'.
  • the lower end of the mold blades is connected via a rotary joint 6, 6 'with a rocker 7, T, which in turn is arranged on a holder 9 via a rotary joint 8, 8'.
  • Each end of the form of slats spring rings 1 1, 1 1 ', 1 1 are provided, which ensure the cohesion of the form of slats.
  • a cylinder tube piece 16 is slipped over the twelve forming blades having spreading tool.
  • the mold blade has a cross-sectional shape with respective planar side walls 21, 22, which come into contact with corresponding side walls of the adjacent slat 2 when the expansion tool is closed.
  • each lamella has a contour 23 that is part-circular in cross-section, or, in a spatial view, a partially cylindrical contour.
  • the inner wall 24 is adapted to the shape of the spreading device (see FIG.
  • At least two splay operations are required, wherein each time the mold segments are contracted, ie, moved radially inwardly, relative rotation must be made between the tool and the cylinder tube piece, such that the mold segments after the rotation are always aligned to the areas 17, which were not acted upon in the first spreading operation with a radial force.
  • This process can also be repeated several times in succession, so that an optimum in technical terms round shape of the cylinder tube piece can be created.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne un procédé et un dispositif d'élargissement de pièces tubulaires cylindriques au moyen d'un dispositif écarteur et d'un certain nombre de lamelles de moulage qui sont déplacées radialement au moyen du dispositif écarteur. Selon l'invention, on exécute deux opérations d'écartement à la même dimension finale pour l'élargissement de la pièce tubulaire cylindrique, la pièce tubulaire cylindrique étant tournée d'un certain angle par rapport à l'outil écarteur entre ces deux opérations.
PCT/DE2012/000315 2011-05-04 2012-03-26 Procédé et dispositif pour élargir des pièces tubulaires cylindriques WO2012149919A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011100506A DE102011100506A1 (de) 2011-05-04 2011-05-04 Verfahren und Vorrichtung zum Aufweiten von Zylinderrohrstücken
DE102011100506.8 2011-05-04

Publications (1)

Publication Number Publication Date
WO2012149919A1 true WO2012149919A1 (fr) 2012-11-08

Family

ID=46026591

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2012/000315 WO2012149919A1 (fr) 2011-05-04 2012-03-26 Procédé et dispositif pour élargir des pièces tubulaires cylindriques

Country Status (2)

Country Link
DE (1) DE102011100506A1 (fr)
WO (1) WO2012149919A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014049035A1 (fr) * 2012-09-28 2014-04-03 Gustav Klauke Gmbh Outil de travail à main, outil élargisseur à main, système piston/cylindre hydraulique et procédé pour faire fonctionner un outil de travail à main

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996020798A1 (fr) 1995-01-04 1996-07-11 Oberburg Engineering Ag Tourelle pivotante a outils d'expansion
WO1996040457A2 (fr) 1995-06-07 1996-12-19 American National Can Company Recipient mis en forme et procede et appareil de mise en forme d'un recipient
EP0852972B1 (fr) 1996-10-21 2003-05-07 Daiwa Can Company Procédé de fabrication des boítes métalliques déformées ayant une paroi de boíte mise en forme
DE10350748A1 (de) * 2003-10-30 2005-06-16 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur Herstellung profilierter Hohlkörper
JP2009125759A (ja) * 2007-11-21 2009-06-11 Panasonic Corp 円筒体の製造方法
DE102008064320A1 (de) 2008-12-20 2010-06-24 Cantec Gmbh & Co. Kg Vorrichtung zum Aufweiten von Rohrstücken

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967488A (en) * 1974-03-11 1976-07-06 The Stolle Corporation Neckerflanger for metal cans

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996020798A1 (fr) 1995-01-04 1996-07-11 Oberburg Engineering Ag Tourelle pivotante a outils d'expansion
WO1996040457A2 (fr) 1995-06-07 1996-12-19 American National Can Company Recipient mis en forme et procede et appareil de mise en forme d'un recipient
EP0852972B1 (fr) 1996-10-21 2003-05-07 Daiwa Can Company Procédé de fabrication des boítes métalliques déformées ayant une paroi de boíte mise en forme
DE10350748A1 (de) * 2003-10-30 2005-06-16 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur Herstellung profilierter Hohlkörper
JP2009125759A (ja) * 2007-11-21 2009-06-11 Panasonic Corp 円筒体の製造方法
DE102008064320A1 (de) 2008-12-20 2010-06-24 Cantec Gmbh & Co. Kg Vorrichtung zum Aufweiten von Rohrstücken

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014049035A1 (fr) * 2012-09-28 2014-04-03 Gustav Klauke Gmbh Outil de travail à main, outil élargisseur à main, système piston/cylindre hydraulique et procédé pour faire fonctionner un outil de travail à main
US10406586B2 (en) 2012-09-28 2019-09-10 Gustav Klauke Gmbh Portable tool and method of operating same

Also Published As

Publication number Publication date
DE102011100506A1 (de) 2012-11-08

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