EP0332801B1 - Appareil pour changer la forme de coupe d'ébauches de boites - Google Patents

Appareil pour changer la forme de coupe d'ébauches de boites Download PDF

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Publication number
EP0332801B1
EP0332801B1 EP89100226A EP89100226A EP0332801B1 EP 0332801 B1 EP0332801 B1 EP 0332801B1 EP 89100226 A EP89100226 A EP 89100226A EP 89100226 A EP89100226 A EP 89100226A EP 0332801 B1 EP0332801 B1 EP 0332801B1
Authority
EP
European Patent Office
Prior art keywords
expanding
turret
axis
blanks
segmental bars
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
EP89100226A
Other languages
German (de)
English (en)
Other versions
EP0332801A2 (fr
EP0332801A3 (en
Inventor
Felix Kramer
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.)
Elpatronic AG
Original Assignee
Elpatronic AG
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 Elpatronic AG filed Critical Elpatronic AG
Publication of EP0332801A2 publication Critical patent/EP0332801A2/fr
Publication of EP0332801A3 publication Critical patent/EP0332801A3/de
Application granted granted Critical
Publication of EP0332801B1 publication Critical patent/EP0332801B1/fr
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
    • 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
    • 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
    • B21D51/2669—Transforming the shape of formed can bodies; Forming can bodies from flattened tubular blanks; Flattening can bodies
    • 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
    • B21D15/00—Corrugating tubes
    • B21D15/02—Corrugating tubes longitudinally
    • 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

Definitions

  • Such a device is the subject of the older German patent application P 3725186.4-14 and the corresponding EP-A-298230, which belongs to the prior art within the meaning of Article 54 (3) EPC.
  • there is a need to change the cross-sectional shape of can blanks for example when can bodies made of cylindrical truncated pyramids are to be produced from cylindrical can blanks.
  • the axes of all expanding mandrels extend parallel to the central axis of the revolver.
  • a piston-cylinder unit is provided, with which all expanding mandrels are brought into alignment one after the other during one revolution of the revolver, and which is extended more or less abruptly in order to actuate the expanding mandrel aligned with it.
  • a device is known by means of which the welding zone of can blanks is covered with a synthetic resin strip.
  • four adhesive devices with mandrels for the can blanks are arranged on a rotating plate, the adhesive devices each being actuated via radially displaceable plungers.
  • To control the tappets there is a central control disk, with elevations and depressions and connecting, step-like transitions, which the tappets are moved past on the rotating plate in cycles. The displacement of all plungers takes place simultaneously and practically suddenly, ie during a small fraction of the rotary movement of the rotating plate.
  • the invention is therefore based on the object of designing a device for changing the cross-sectional shape of can bodies in such a way that it can continuously deform a larger number of can blanks per unit of time.
  • the object is achieved according to the invention with a device of the type described in the introduction, in which the actuating member is a central cam body, on which each of the wedges is supported at least during a part of each revolution of the revolver corresponding to the distance between two adjacent expanding mandrels.
  • the device according to the invention can have a central shaft which connects the turret to a drive. Proceeding from this, the invention can be further developed in that the cam body is mounted on the shaft and can be fixed in a selectable rotational angle position with an adjusting device. This gives the user of the device according to the invention the possibility, given the design of the cam body, to determine when the cam body acts on the individual expansion bodies in the course of each revolution of the revolver.
  • the expanding mandrels are arranged in a star shape and the cam body has a radial curve, by the action of which the wedges can be displaced radially away from the central axis.
  • the device shown and described in the aforementioned older patent application can be further developed according to the invention in that expanding mandrels arranged parallel to the central axis can be actuated by means of a central axial curve.
  • each wedge is supported by a shaft which is guided in the associated support body and which can be rolled on the cam body.
  • each wedge is biased by at least one spring against the direction in which it can be displaced by the action of the cam body in order to spread the associated segment rods apart.
  • the rollers are preferably kept in constant contact with the cam body by the springs.
  • a smooth running of the device according to the invention can also be promoted in that each of the segment rods is guided for their movements transversely to the associated expanding mandrel axis between a foot part and a head part of the associated supporting body by means of rolling element guides.
  • rolling element guides absorb the force components that inevitably occur when the segment rods are spread apart and act in the direction of the expanding mandrel axis and make the segment rods move smoothly.
  • a smooth running of the device can also be promoted in that each of the segment rods is supported on the associated wedge via a rolling element guide.
  • the two rolling element guides described can also be advantageous regardless of the feature of the invention that the wedges are actuated by a central cam body.
  • the gentle actuation of the wedges by the cam body which can extend over a large part of each revolution of the revolver, is particularly facilitated by the roller bearings according to the invention.
  • the device shown has a drive 10, which is formed, for example, by an electric motor, a continuously variable transmission and a stepping mechanism and drives a shaft 12.
  • the shaft 12 is horizontal in the example shown and is mounted in a manner not shown in the drive 10 and additionally at its free end in a bearing block 14.
  • a cam body 18 is mounted on the shaft 12 by means of a pair of roller bearings 16, on which a radial curve 20 is formed.
  • a bearing housing 24 or 26 is mounted on the cam body 18 on both sides of the radial curve 20 by means of a further roller bearing 22.
  • the bearing housing 24, which is adjacent to the drive 10, is welded to an end wall 28 of a turret 30 and is by means of a fitting 32 with the Shaft 12 connected to rotate together.
  • the other bearing housing 26 is screwed to a second end wall 28 of the turret 30.
  • the turret 30 can thus be rotated together with the shaft 12 about a central axis A defined by it.
  • An adjusting device 34 in the form of a lever which is radial with respect to the central axis A is fastened to an annular end face of the cam body 18 facing away from the drive 10.
  • the latter At its end remote from the shaft 12, the latter has an arcuate slot 36 which is concentric with the shaft 12 and through which a screw 38 fixed to the bearing block 14 extends.
  • the screw 38 By tightening the screw 38, the cam body 18 is fixed in an angular position that can be selected in a range determined by the length of the elongated hole 36.
  • the curve body 18 is set so that the largest radius of the radial curve 20 according to FIG. 2 points vertically upwards.
  • the setting device 34 is normally coupled to a drive, not shown here, which moves the setting device 34 back and forth in cycles.
  • the turret 30 has the formula of a polygon with eight flat frames 40 in the example shown, which extend parallel to the central axis A and at right angles to the end walls 28 and are welded to them.
  • Each of the frames 40 carries an expanding mandrel 42 with an expanding mandrel axis B intersecting the central axis A at a right angle. According to FIG 30 to be deformed by 270 ° into an oval or polygon in the example shown.
  • Each of the total of eight expanding mandrels 42 has a multi-part support body 44 with a foot part 46 which is screwed to the associated frame 40, a head part 48 and a pair of prismatic supports 50 which firmly connect the head part 48 to the foot part 46 and leave gaps between them , in which two pairs of segment rods 52 are arranged.
  • the supports 50 and segment rods 52 extend parallel to the expanding mandrel axis B.
  • Each of the segment rods 52 is guided on the foot part 46 and on the head part 48 by a roller guide 54 which is radial with respect to the expanding mandrel axis B such that the four segment rods in total can be spread apart radially.
  • Each of the rolling element guides 54 consists essentially of a pair of radial grooves 56, one of which is formed in the foot part 46 or head part 48 and the other at the adjacent end of the relevant segment rod 52, as well as two cylindrical rolling elements 58 and a cage plate 60 holding them radial grooves 56 are prism-shaped with two flanks arranged at right angles to one another, on each of which one of the two associated rolling elements 58 can be rolled.
  • Each of the segment rods 52 has a radial stepped bore 62 near its two ends, which receives a screw 64 fastened to the foot part 46 or head part 48 and a compression spring 66.
  • the compression spring 66 is clamped between the head of the screw 64 and the step formed in the associated stepped bore in such a way that it tends to move the segment rod 52 radially inward toward the expanding mandrel axis B.
  • an inclined surface 68 is formed such that it converges with the corresponding inclined surface 68 of the opposite segment rod 52 in the direction of the free end of the expanding mandrel 42 in question.
  • a wedge 70 which has inclined surfaces 72 parallel to the inclined surfaces 68, belongs to each expanding mandrel 42. Between respective inclined surfaces 68 and 72, a roller guide 74 is arranged, which is formed by cylindrical rollers 76 and a ladder-like cage plate 78. The movement of each cage plate 78 in the direction of the free end of the associated expanding mandrel 42 is limited by a stop 80, which in the example shown is formed by a threaded bolt screwed into the associated inclined surface 68.
  • a guide tube 82 is fastened in each foot part 46, to which a flange 84 is clamped in an adjustable manner in the direction of the expansion body axis B.
  • Each wedge 70 has a cylindrical shaft 86 which extends through the associated guide tube 82 and is guided in it with ball guides 88.
  • a roller 90 is mounted by means of a fork-shaped roller holder 92 such that the axis of the roller 90 extends parallel to the central axis A.
  • a pair of springs 94 are clamped, which endeavor to hold the roller holder 92, and thus also the wedge 70 firmly connected to it, in a radially inner position in which the wedge 70 is the associated one Segment rods 52 make it possible, under the action of the compression springs 66, to assume a radially inner position with respect to the expanding mandrel axis B.
  • the springs 94 ensure that the associated roller 90 rolls continuously on the radial curve 20.
  • each of the expanding mandrels 42 passes through a position in which its expanding mandrel axis B is aligned with a horizontal feed axis D.
  • a circular cylindrical can blank C is pushed onto the respective expanding mandrel 42 of this feed axis D.
  • a pair of spars 96 are arranged in a fixed manner parallel to the feed axis D, between which the expanding mandrels 42 can be moved, and on each of which a driver 98 for conveying a can blank C can be moved.
  • the drivers 98 are, for example, with magnets, suction cups, or the like. equipped so that they each capture a can blank C at a takeover point (not shown) and take it to the expanding mandrel 42 that is currently between the two spars 96.
  • the can blank C is pushed onto an expanding mandrel 42 while the turret 30 is at a standstill.
  • the locking device 34 is rotated slightly in time with the movement of the drivers 98 by the drive, not shown.
  • the can blank C is clamped by the expanding mandrel 42, and the drivers 98 can be withdrawn without problems without pushing the can blank C back again.
  • Each can blank C placed in this way on one of the expanding mandrels 42 is gradually deformed as the revolver 30 continues to rotate, by spreading the segment rods 52 apart.
  • the segment rods 52 then return to their rest position, so that the deformed can blank C can be pulled off the expanding mandrel 42.
  • this is the case after rotating the turret 30 by 270 °; the deformed can blanks are pulled vertically downwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Soil Working Implements (AREA)
  • Basic Packing Technique (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Wire Processing (AREA)
  • Specific Conveyance Elements (AREA)
  • Making Paper Articles (AREA)

Claims (4)

  1. Dispositif pour changer la section droite transversale d'ébauches de boîtes,comprenant
    - un barillet (30) pouvant être entraîné en rotation autour d'un axe central (A),
    - plusieurs mandrins (42) d'expansion disposés sur le barillet (30) autour de l'axe central (A) et se composant chacun essentiellement
    - d'un corps (44) de support fixé sur le barillet (30), définissant un axe (B) de mandrin d'expansion, de plusieurs segments-barres (52) disposés autour de l'axe (B) du mandrin d'expansion et guidés de façon réglable radialement sur le corps (44) de support, ainsi que d'un coin (70) pouvant être déplacé le long de l'axe (B) du mandrin d'expansion afin d'écarter les segments-barres (52), et comprenant
    - un élément d'actionnement commun, à l'aide duquel les coins (70) peuvent être déplacés, les uns après les autres, par l'intermédiaire de tiges (86), pendant la rotation du barillet (30),
    l'élément d'actionnement comportant une came radiale sous forme d'une came (20) en forme d'arc présentant des flancs courbes, les segments-barres (52) étant progressivement écartés les uns des autres pendant le parcours d'un angle de rotation du barillet (30), qui correspond à un multiple de l'angle compris entre deux mandrins contigus (42) d'expansion, lorsque les tiges (86) sont guidées le long de l'un des flancs, et les segments-barres (52) retournant progressivement à leur position de repos lorsque les tiges (86) sont guidées le long de l'autre flanc.
  2. Dispositif selon la revendication 1, comprenant un arbre central (2) reliant le barillet (30) à un dispositif d'entraînement (10), caractérise en ce que l'élément d'actionnement est placé sur l'arbre (12) et est réglable selon une position angulaire de rotation au choix par un dispositif (34) de réglage.
  3. Dispositif selon la revendication 1, caractérisé en ce que chacun des segments-barres (52) est guidé, pour son mouvement effectué transversalement par rapport à l'axe (B) de mandrin d'expansion correspondant, entre une pièce (46) de pied et une pièce (48) de tête du corps (44) de support associé, au moyen de guidages (54) à corps de roulement.
  4. Dispositif selon la revendication 1, caractérisé en ce que chacun des segments-barres (52) s'appuie par l'intermédiaire d'un guidage (74) à corps de roulement sur le coin (70) associé.
EP89100226A 1988-03-15 1989-01-07 Appareil pour changer la forme de coupe d'ébauches de boites Expired - Lifetime EP0332801B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH973/88A CH674165A5 (fr) 1988-03-15 1988-03-15
CH973/88 1988-03-15

Publications (3)

Publication Number Publication Date
EP0332801A2 EP0332801A2 (fr) 1989-09-20
EP0332801A3 EP0332801A3 (en) 1990-10-03
EP0332801B1 true EP0332801B1 (fr) 1992-11-11

Family

ID=4199511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100226A Expired - Lifetime EP0332801B1 (fr) 1988-03-15 1989-01-07 Appareil pour changer la forme de coupe d'ébauches de boites

Country Status (17)

Country Link
US (1) US4936130A (fr)
EP (1) EP0332801B1 (fr)
JP (1) JPH0780019B2 (fr)
KR (1) KR920004665B1 (fr)
CN (1) CN1024398C (fr)
AU (1) AU605078B2 (fr)
BR (1) BR8901191A (fr)
CA (1) CA1333974C (fr)
CH (1) CH674165A5 (fr)
DE (2) DE3811995A1 (fr)
DK (1) DK164774C (fr)
ES (1) ES2035956T3 (fr)
FI (1) FI891214A (fr)
GR (1) GR3006880T3 (fr)
NO (1) NO172218C (fr)
SU (1) SU1722215A3 (fr)
ZA (1) ZA89827B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2811317C1 (ru) * 2023-04-19 2024-01-11 Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" Способ обработки призмы топливного насоса высокого давления

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH676210A5 (fr) * 1988-07-19 1990-12-28 Elpatronic Ag
BR9905474B1 (pt) * 1999-10-27 2009-01-13 dispositivo para expansço e conformaÇço de corpos de lata.
US6233992B1 (en) * 2000-04-03 2001-05-22 Lomar Machine & Tool Co. Multi-station rotary endform machine
DE102008053825A1 (de) * 2008-10-27 2010-04-29 Cmc Kuhnke Gmbh Positioniereinrichtung für die Untersuchung eines Dosenfalzquerschnittes und der Dosenfalzfaltenbildung mittels Röntgenstrahlen
CN103831318B (zh) * 2014-03-20 2015-08-12 蚌埠通达汽车零部件有限公司 一种提高整形稳定性的油箱整形机
JP6482332B2 (ja) * 2015-03-10 2019-03-13 昭和アルミニウム缶株式会社 缶体搬送装置および印刷装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US996122A (en) * 1908-01-20 1911-06-27 Francis C Osborn Container-body-forming machine.
US983278A (en) * 1909-09-24 1911-02-07 Emory F Hartlove Device for re-forming can ends.
US2175746A (en) * 1936-12-16 1939-10-10 Crown Can Company Apparatus for forming can bodies
US2161963A (en) * 1938-07-23 1939-06-13 Bliss E W Co Apparatus for shaping tubes, shells, or the like
US2872887A (en) * 1953-03-06 1959-02-10 Praturlon Joseph Rotary press comprising a plurality of tool groups
US3222910A (en) * 1962-02-23 1965-12-14 Wallace Expanding Machines Method of forming metallic sheet members
GB1060316A (en) * 1963-03-05 1967-03-01 Smith Olof Ab Device for production of sheet metal objects of truncated cone shape
FR1455019A (fr) * 1963-05-02 1966-04-01 Machine pour l'encochage et le pliage de corps de boîtes
DE2738863C3 (de) * 1977-08-29 1981-07-23 Kurt G. 7332 Eislingen Hinterkopf Vorrichtung zum konischen Aufweiten von Tuben
KR900001958B1 (ko) * 1984-01-25 1990-03-27 도요세이깡 가부시끼가이샤 용접부가 보정된 용접관동의 제조방법과 장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2811317C1 (ru) * 2023-04-19 2024-01-11 Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" Способ обработки призмы топливного насоса высокого давления

Also Published As

Publication number Publication date
CA1333974C (fr) 1995-01-17
JPH01273633A (ja) 1989-11-01
FI891214A0 (fi) 1989-03-15
DK164774B (da) 1992-08-17
SU1722215A3 (ru) 1992-03-23
ES2035956T3 (es) 1993-05-01
DK164774C (da) 1992-12-28
BR8901191A (pt) 1989-10-31
GR3006880T3 (fr) 1993-06-30
ZA89827B (en) 1989-10-25
JPH0780019B2 (ja) 1995-08-30
AU2855689A (en) 1989-09-21
DE3811995A1 (de) 1989-09-28
FI891214A (fi) 1989-09-16
NO172218C (no) 1993-06-23
DK64589D0 (da) 1989-02-10
CN1024398C (zh) 1994-05-04
DE58902635D1 (de) 1992-12-17
NO891103D0 (no) 1989-03-14
KR920004665B1 (ko) 1992-06-13
US4936130A (en) 1990-06-26
EP0332801A2 (fr) 1989-09-20
DE3811995C2 (fr) 1990-06-07
KR890014184A (ko) 1989-10-23
NO891103L (no) 1989-09-18
NO172218B (no) 1993-03-15
CH674165A5 (fr) 1990-05-15
AU605078B2 (en) 1991-01-03
CN1037853A (zh) 1989-12-13
DK64589A (da) 1989-09-16
EP0332801A3 (en) 1990-10-03

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