EP2353745B1 - Outil et procédé destinés à la fabrication de corps de boîtes - Google Patents

Outil et procédé destinés à la fabrication de corps de boîtes Download PDF

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Publication number
EP2353745B1
EP2353745B1 EP11150226.6A EP11150226A EP2353745B1 EP 2353745 B1 EP2353745 B1 EP 2353745B1 EP 11150226 A EP11150226 A EP 11150226A EP 2353745 B1 EP2353745 B1 EP 2353745B1
Authority
EP
European Patent Office
Prior art keywords
drawing punch
punch
tool
cup
controlled
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.)
Not-in-force
Application number
EP11150226.6A
Other languages
German (de)
English (en)
Other versions
EP2353745A3 (fr
EP2353745A2 (fr
Inventor
Gerhard Pick
Martin Gaebges
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.)
L Schuler GmbH
Original Assignee
L Schuler GmbH
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 L Schuler GmbH filed Critical L Schuler GmbH
Publication of EP2353745A2 publication Critical patent/EP2353745A2/fr
Publication of EP2353745A3 publication Critical patent/EP2353745A3/fr
Application granted granted Critical
Publication of EP2353745B1 publication Critical patent/EP2353745B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/22—Deep-drawing with devices for holding the edge of the blanks
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/28—Deep-drawing of cylindrical articles using consecutive dies

Definitions

  • the invention relates to a tool and a method for producing can bodies according to the preamble of claim 1 or 9.
  • a sheet-like sheet metal blank which is formed in several stages to the desired can body.
  • This forming process comprises several Umiormplann, which are usually carried out in a row. Only in this way can the desired high degrees of deformation be achieved.
  • WO 2008/067522 A1 a manufacturing line for the production of beverage cans from circular disc-shaped sheet metal blanks known. These are first passed over in appropriate forming machines in a cup shape. These cup-shaped intermediate moldings are then passed into further forming machines, which produce the desired can body in a so-called ironing-drawing process from the cup-shaped intermediate moldings.
  • the WO 2009/052608 A1 proposes to perform the transformation of a planar board to the can body in two stages in a single tool. This includes two opposites working drawing dies, which are arranged coaxially to each other. The result is a Stülp-drawing process, which places high demands on the formability of the material used.
  • US 4 059 544 A such as DE 23 53 209 A1 is a device with two coaxially arranged punches for forming a can body from a board known.
  • a cup is formed from a board with the hollow cylindrical outer punch.
  • the cup is reshaped by an inner punch, which engages in the cup and forms the can body with can bottom from it.
  • JP 2002-113528 A shows an apparatus for forming a hollow cylindrical body with a bottom having two coaxially arranged stamp.
  • the tool according to the invention combines the transformation of a planar board into a cup and the forming of the cup into a can body in a two-step operation in a tool. This eliminates the one hand, the need to hold for the Napfher too and for subsequent to the Napfher too ironing-pulling process separate special machines. Because in the inventive tool and in the invention In addition, a process is dispensed with a Stülpziehvorgang, a simple and reliable manufacturing process is also obtained.
  • the invention can be implemented particularly advantageously in the production of can bodies from materials which tend to work hardening.
  • the Napfher too and the subsequent ironing-drawing process for producing the can body follow each other so closely in time that the deformation-induced heating of the cup for the post-stretching ironing-drawing process is at least largely retained.
  • Hardening phenomena, as they could occur during transport on the way from a Napfautomaten to Abstreckautomaten are thus excluded or minimized. This contributes to the creation of a robust and reliable manufacturing process.
  • the inventive concept also allows a clear separation between moving and stationary tool parts.
  • the moving drawing dies are both associated with a moving tool part, for example an upper tool.
  • the corresponding countershapes and counterplant surfaces are assigned in the stationary tool part, for example a lower tool.
  • the displacement or force control of the drawing punch can be made as required by components of the press, which reduces the tool costs. If necessary, can be dispensed with expensive possibly controllable springs, hydraulic devices, pneumatic devices, actuators and the like in the tool.
  • These components can be associated with the inventive concept of the press and thus be realized on the press side. Even if a more extensive tool park for different doses is kept, this is no special effort.
  • FIG. 1 a forming machine 1 is illustrated by a tool 2 is added for the production of can bodies.
  • the tool has a stationary in the forming machine 1 arranged lower tool part 3 and on this to and away from this linearly movable upper tool part 4.
  • the tool parts 3, 4 can be arranged vertically above one another, but if necessary also in a different spatial orientation, for example next to one another or one behind the other.
  • the direction of movement of the upper tool part 4 is vertical.
  • the direction of movement can also have any other suitable spatial orientation.
  • the upper tool part 4 is associated with a drive device 5, which moves the individual components of the upper tool part 4 in a suitable manner or applied with force.
  • FIG. 4 illustrates the tool 2 in more detail.
  • the upper tool part 4 comprises a plurality of concentric to a central axis 6 arranged parts, namely a first drawing punch 7, a second drawing punch 8 and a hold-down ring 9.
  • the first drawing punch 7 is tubular. At its lower end face it can be provided, if necessary, with a pressure ring 10, which is particularly wear-resistant and tuned in its sliding properties on the material to be processed.
  • the first drawing punch 7 is connected to that part of the drive device 5 which is suitable for moving the drawing punch 7 in a position-controlled manner in the direction of the central axis 6. Furthermore, the drive device 5 is designed such that that it can switch the operation of the drawing punch 7 of a position-controlled operation on a force-controlled operation.
  • the first die 7 is the hold-down ring 9 associated with the corresponding biasing means, such as a spring assembly 11 and pressure pins 12, 13, 14, 15 (see FIG. 1 ) is connected to the first punch 7 to define a defined, in FIG. 2 To generate indicated by arrows 16 force.
  • biasing means such as a spring assembly 11 and pressure pins 12, 13, 14, 15 (see FIG. 1 ) is connected to the first punch 7 to define a defined, in FIG. 2 To generate indicated by arrows 16 force.
  • the second drawing punch 8 which is also associated with the upper tool 4, is arranged movably in an inner channel of the first drawing punch 7 along the central axis 6. Its lower end face 17 preferably corresponds to the desired inner shape of the can body to be produced.
  • the lower tool 3 includes several parts that are in FIG. 2 for the sake of simplicity, are shown as a single part.
  • the lower tool 3 has, on the side facing the upper tool 4, a preferably flat surface 17 for supporting a printed circuit board 18 preferably designed as a round disk.
  • the surface 17 forms the counter bearing surface for the hold-down.
  • a stepped passage 19 is formed in the lower tool 3.
  • the channel 19 initially has a diameter which is greater than the outer diameter of the first drawing punch 7.
  • the passage 19 passes over a diameter which is smaller than the outer diameter of the first drawing punch 7, but larger than the outer diameter of the second drawing punch 8. If the drawing punch 7 moves into the through-channel 19, it defines with the channel wall an annular gap, the width of which results from the following functional description. If the second drawing punch 8 moves into the narrower, lower part of the through-channel 9, it again defines with the channel wall an annular gap whose width also results from the following functional description. The same applies to the distance between the step 20 and the surface 17.
  • FIG. 4 illustrates the tool 3 after completion of the cup-pulling operation.
  • the hold-down ring 9 is now inoperative.
  • the first drawing punch 7 has moved the resulting cup so far into the passage 19 in that the bottom 24 arrives at the stage 20.
  • the pressure ring 10 presses from the inside to the bottom 24 and thus this against the step 20.
  • the first punch 7 changes from its pulling function to hold-down function.
  • the corresponding drive of the drawing punch 7 is designed so that it can assume different operating modes.
  • the first drawing punch 7 is moved away during the drawing process (eg position-controlled) moves. This can be done by a suitable, dependent on a drive gear or by position-controlled drives.
  • the drive of the drawing punch 7 switches to force-controlled (eg force-controlled) operation.
  • force-controlled eg force-controlled
  • suitable spring means if necessary, be provided in their power controllable or switchable spring means.
  • force sensing and force control can be provided if suitable drives are provided.
  • the pestle in question is moved by a drive (e.g., servo drive) according to a predetermined path-time curve.
  • a drive e.g., servo drive
  • force-controlled operation the plunger is acted upon by a force that is brought into conformity with a predetermined force or a predetermined force curve.
  • the second drawing punch 8 moves in the same direction as before the resting now Drawing punch 7 forward (ie down here).
  • the movement of the second drawing punch 8 may also have started earlier, but the second drawing punch 8 does not come into contact with the bottom 24 during the drawing operation of the bowl.
  • the kraftbeaufschlagte first drawing punch acts as a hold-down, which controls the material of the cup controlled in the annular gap between the second punch 8 and the narrower part of the passage channel 19 can slide. In this second drawing process, the desired can body is produced.
  • the wall thickness of the can body is thereby reduced and adjusted to a desired level.
  • the direction of the working stroke of the first drawing punch 7 coincides with the direction of the working stroke of the second drawing punch 8.
  • the drawing punches 7 and 8 are thus moved in the same direction.
  • the first and the second drawing process thus also take place in the same direction, ie in one and the same tool, one after the other and in the same direction.
  • draw rings 25, 26 which are arranged one above the other in an axial distance in the wall of the passage 19.
  • the annular gap formed between the drawing rings 25 and 26 and the drawing punch 8 determines the wall thickness of the can body to be formed.
  • the draw rings 25, 26 calibrate the outer diameter of the can body. The process is called stripping.
  • the can body production takes place in two stages.
  • the first drawing punch 7 is active while the second drawing punch 8 is inactive, that is not acts on the material of the can body.
  • the first drawing punch 7 acts as a hold-down while the second drawing punch 8 is active and causes the drawing and stripping.
  • the material of the board 18 is zigzagged. From the horizontal orientation, which is predetermined by the surface 17, it first passes in the vertical direction parallel to the central axis 6 to form the cylinder wall. From this, the material flows quasi Z-shaped, i. in a right-left bend over level 20 to form the can wall. Umstülpvor réelle in which the wall material would be bent twice as the diameter decreases in the same direction, are avoided.
  • a special tool 2 is created, which combines both the Napfher too well as the transformation of the cup to the can body in a tool 3. It is assumed that preferably round plates 18, which are first drawn to a well in a Abstreckprocess of the tool 2 in a first step to wells and then in a second drawing process, the washerzug- and sliding-drawing-ironing, are stretched to can bodies. The draw directions are the same in both work stages. This results in simple, robust tools and a simple, robust manufacturing process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Claims (10)

  1. Outillage (2) destiné à la fabrication de corps de boîtes métalliques, notamment pour des boîtes de récipients sous pression ou des canettes à boissons,
    comprenant un premier poinçon d'emboutissage (7), destiné à former un godet à partir d'un flan (18), qui est déplacé par un dispositif d'entraînement (5), et
    comprenant un deuxième poinçon d'emboutissage (8) qui est disposé coaxialement avec le premier poinçon d'emboutissage (7) et est destiné à poursuivre l'emboutissage et à réaliser l'étirage du godet en vue de former le corps de boîte métallique, le premier poinçon d'emboutissage (7) et le deuxième poinçon d'emboutissage (8) étant entraînés dans le même sens,
    caractérisé en ce que
    le dispositif d'entraînement (5) du premier poinçon d'emboutissage (7) est conçu de manière à ce qu'il puisse adopter un mode de fonctionnement à position commandée ou à position régulée et un mode de fonctionnement à puissance commandée ou à puissance régulée, la commutation du mode de fonctionnement à position commandée ou à position régulée au mode de fonctionnement à puissance commandée ou à puissance régulée étant effectuée lorsque le premier poinçon d'emboutissage (7) est commuté de sa fonction d'emboutissage à sa fonction de serre-flan.
  2. Outillage selon la revendication 1, caractérisé en ce que le deuxième poinçon d'emboutissage (8) est disposé coaxialement dans un conduit central du premier poinçon d'emboutissage (7), avec possibilité de déplacement en longueur.
  3. Outillage selon la revendication 1, caractérisé en ce que le premier poinçon d'emboutissage (7) est réalisé sous une forme tubulaire.
  4. Outillage selon la revendication 1, caractérisé en ce qu'il est associé au premier poinçon d'emboutissage (7), un premier serre-flan (9) et une première surface antagoniste de serre-flan (21) fixe.
  5. Outillage selon la revendication 1, caractérisé en ce qu'il est associé au deuxième poinçon d'emboutissage (8), un deuxième serre-flan et une deuxième surface antagoniste de serre-flan fixe.
  6. Outillage selon la revendication 5, caractérisé en ce que le deuxième serre-flan est formé par le premier poinçon d'emboutissage (7).
  7. Outillage selon la revendication 4 et 5, caractérisé en ce que la deuxième surface antagoniste de serre-flan est formée par un épaulement annulaire (20) qui est disposé à une distance fixe par rapport à la première surface de serre-flan (21).
  8. Outillage selon la revendication 1, caractérisé en ce qu'il est associé au deuxième poinçon d'emboutissage (8), un dispositif d'entraînement (5) pouvant être actionné avec régulation de position.
  9. Procédé destiné à la fabrication de corps de boîtes métalliques, notamment pour des boîtes de récipients sous pression ou des canettes à boissons, selon lequel, dans un outillage (2), un premier poinçon d'emboutissage (7), commandé ou régulé en position, enfonce un serre-flan (17) découpé, dans un conduit de passage (19), dans un sens d'emboutissage défini, et emboutit d'abord un godet avec un fond (24) et une paroi (23), le godet (23, 24) étant ensuite soumis à un emboutissage supplémentaire, dans le même sens d'emboutissage, et à un étirage, avec un deuxième poinçon d'emboutissage (8) disposé coaxialement avec le premier poinçon d'emboutissage (7), en vue de former le corps de boîte métallique,
    caractérisé en ce que
    le dispositif d'entraînement (5) du premier poinçon d'emboutissage (7) est commuté du fonctionnement à position commandée ou à position régulée à un fonctionnement à puissance commandée ou à puissance régulée, lorsque le fond (24) du godet arrive à un gradin (20) dans le conduit de passage (19).
  10. Procédé selon la revendication 9, caractérisé en ce que le poinçon d'emboutissage (7) de la première étape d'emboutissage est utilisé comme serre-flan pour la deuxième étape d'emboutissage.
EP11150226.6A 2010-01-15 2011-01-05 Outil et procédé destinés à la fabrication de corps de boîtes Not-in-force EP2353745B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010000094 DE102010000094B4 (de) 2010-01-15 2010-01-15 Werkzeug und Verfahren zur Herstellung von Dosenkörpern

Publications (3)

Publication Number Publication Date
EP2353745A2 EP2353745A2 (fr) 2011-08-10
EP2353745A3 EP2353745A3 (fr) 2014-05-14
EP2353745B1 true EP2353745B1 (fr) 2016-04-20

Family

ID=44085298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11150226.6A Not-in-force EP2353745B1 (fr) 2010-01-15 2011-01-05 Outil et procédé destinés à la fabrication de corps de boîtes

Country Status (4)

Country Link
US (1) US9016101B2 (fr)
EP (1) EP2353745B1 (fr)
JP (1) JP5728236B2 (fr)
DE (1) DE102010000094B4 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011056462B4 (de) 2011-12-15 2014-08-28 Schuler Pressen Gmbh Verfahren zur Herstellung eines Behälterkörpers
DE102012206297A1 (de) 2012-04-17 2013-10-17 Krones Ag Verfahren und Vorrichtung zur Dosenherstellung und Dosenabfüllung
CN106513484B (zh) * 2016-12-23 2019-01-04 佛山市永恒液压机械有限公司 滤清器外壳用拉伸机

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US353439A (en) * 1886-11-30 Half to archibald w
USRE20009E (en) * 1936-06-16 Art of drawing
US1602411A (en) * 1924-02-09 1926-10-12 Marquette Tool & Mfg Co Die and blank holding means
US3855862A (en) * 1973-04-23 1974-12-24 Continental Can Co Draw and wall iron process for metal cans
US4183238A (en) * 1975-01-24 1980-01-15 Agence Nationale De Valorisation De La Recherche (Anvar) Double acting precision deep-stamping press
US4095544A (en) * 1976-10-26 1978-06-20 National Steel Corporation Production of corrosion resistant seam-free can bodies from tinplate
US5357779A (en) * 1990-09-07 1994-10-25 Coors Brewing Company Can body maker with magnetic ram bearing and redraw actuator
JP3758133B2 (ja) * 2000-10-10 2006-03-22 トヨタ自動車株式会社 絞り成形方法
JP5019720B2 (ja) * 2005-05-24 2012-09-05 小島プレス工業株式会社 電池ケースの製造装置
US7797978B2 (en) 2006-11-30 2010-09-21 Rexam Beverage Can Company Method and apparatus for making two-piece beverage can components
TW200827054A (en) * 2006-12-06 2008-07-01 Ihara Science Corp Elbow material and production device and production method thereof
US20090100892A1 (en) 2007-10-22 2009-04-23 Dubravko Nardini Method and apparatus for producing untrimmed container bodies

Also Published As

Publication number Publication date
EP2353745A3 (fr) 2014-05-14
US9016101B2 (en) 2015-04-28
DE102010000094B4 (de) 2012-12-13
EP2353745A2 (fr) 2011-08-10
JP5728236B2 (ja) 2015-06-03
DE102010000094A1 (de) 2011-07-21
JP2011143472A (ja) 2011-07-28
US20110174045A1 (en) 2011-07-21

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