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EP0576332A1 - Bördelkopf für Konservendosen mit Spielregulierungsmitteln - Google Patents

Bördelkopf für Konservendosen mit Spielregulierungsmitteln Download PDF

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Publication number
EP0576332A1
EP0576332A1 EP93401560A EP93401560A EP0576332A1 EP 0576332 A1 EP0576332 A1 EP 0576332A1 EP 93401560 A EP93401560 A EP 93401560A EP 93401560 A EP93401560 A EP 93401560A EP 0576332 A1 EP0576332 A1 EP 0576332A1
Authority
EP
European Patent Office
Prior art keywords
roller
axis
cam
rollers
cam follower
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
EP93401560A
Other languages
English (en)
French (fr)
Other versions
EP0576332B1 (de
Inventor
Jean-Charles Marchadour
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.)
Hema Technologies SA
Original Assignee
Hema Technologies 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 Hema Technologies SA filed Critical Hema Technologies SA
Publication of EP0576332A1 publication Critical patent/EP0576332A1/de
Application granted granted Critical
Publication of EP0576332B1 publication Critical patent/EP0576332B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on containers
    • B65B7/285—Securing closures on containers by deformation of the closure
    • B65B7/2857—Securing closures on containers by deformation of the closure and the container rim
    • 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
    • B21D51/30—Folding the circumferential seam
    • B21D51/32—Folding the circumferential seam by rolling

Definitions

  • the present invention relates to a crimping head intended to seal the cans by sealing the lid on the can body, comprising at least one crimping wheel mounted on a movable support part which rotates it, in a plane parallel to the work surface on which the crimping box rests, following a path such that it moves exactly along the outline of the box while remaining pressed against it in order to crimp the edge of the cover onto the edge of the box body; the wheel is required, via said support piece, to follow this path thanks to guide means associated with the latter, which comprise a rotary roller of axis perpendicular to said work plane and linked to said support piece, and a cam surface cylindrical, the generators of which, also perpendicular to the work plane, follow one another along an appropriate path extending parallel to the work plane, the roller rolling against the cam surface under the action of means which keep it in contact with the latter .
  • guide means associated with the latter which comprise a rotary roller of axis perpendicular to said work plane and linked to said support piece
  • crimping heads of this kind used in particular for crimping cans with non-circular contours, called "shaped cans"
  • the guide roller associated with each crimping wheel is kept in contact with the surface of cam by a spring. If the operation using such return springs is satisfactory when the crimping head works at a reduced rate, it is not the same when the rate is substantially increased. The inertia effects then become important and cause untimely detachments of the guide rollers.
  • the springs subjected to violent and high frequency stresses, must be replaced periodically.
  • the present invention aims to remedy these drawbacks.
  • the aforementioned return springs are replaced, for each roller, by means for holding said roller in contact with the cam surface, comprising on the one hand a second rotary roller, juxtaposed with this first roller and rotating around the same axis, the second roller offering a curved peripheral surface, its section by a radial plane being a curved line of convexity turned towards the outside, and on the other hand, situated opposite the abovementioned cam surface, a cam follower surface constituting for the second roller a bearing and rolling surface which short parallel to the cam surface, however offering a slight inclination relative to the direction of the common axis of the two rollers; the relative position, along the direction of this axis, of the second roller and the cam follower surface is adjustable in order to allow adjustment of the clearance between the assembly of the two rollers and the cam and cam follower surfaces between which this set is interposed.
  • Such an arrangement provides positive support, without any elastic return member, of the first roller against the cam surface, the two rollers combining their effects to take up the significant radial forces to which the wheel is subjected, while the play can be eliminated by adjustment of the position, in axial direction, of the second roller relative to the cam follower surface. Consequently, the means for guiding each crimping wheel as a function of the layout of the cam surface impose no limit on the working rate of the crimping head, the inertia and wear effects linked to the springs of reminder having disappeared.
  • the second roller has a diameter smaller than that of the first roller and the cam surface has a transverse dimension covering the combined thickness of the two juxtaposed rollers, while the cam follower surface has a transverse dimension lesser, such that it extends only opposite the second roller.
  • the cam and cam follower surfaces are formed by the sides of a groove hollowed out in a plate according to an appropriate layout and with a constant cross section, the second roller being adjacent to the bottom of this groove.
  • the distance between the cam follower surface and the work plane is constant, and the clearance is adjusted by displacement of the second roller, at least, in the direction of its axis relative to said plane.
  • the mutual difference of the two rollers in the direction of their common axis is constant. This means in particular that, when the adjustment is made by axial displacement of the second roller, it is in fact the two rollers which are moved together. Such an arrangement has no effect on the precision of the guidance, since the cam surface is a cylindrical surface of generatrices parallel to said axis.
  • the two rollers are mounted coaxially around the same journal on which they are fixed in the axial direction, and this journal is subject to the support part of the wheel by fixing means allowing the adjustment of its position relative to said plane in the direction of the common axis of the two rollers.
  • the pin may have a threaded end which is screwed into a threaded cavity formed in said support piece in the direction of the common axis of the two rollers, this cavity being opened by a radial slot so that it is located produced between two elastically deformable fork legs, which can be tightened or loosened mutually to block the trunnion between them on the support part or allow its position to be adjusted by progressive screwing or unscrewing.
  • Figure 1 illustrates the kinematics of a crimping head for shaped boxes.
  • Figure 2 shows schematically, in axial section, the main elements associated with a wheel in a crimping head according to the invention.
  • Each wheel 3 is carried by a part 4 comprising a hub 4a pivoting about a vertical axis Y, and two arms 4b, 4c secured to the hub 4a.
  • the thumbwheel is mounted at the end of one of these arms, designated by the reference 4b, to which its axis of rotation V is linked.
  • the pivot axis Y of the hub 4a is required to rotate around the axis X from the crimping head, remaining at a constant distance R from this axis.
  • a roller 10 At the end of the other arm 4c of the support piece 4 is mounted a roller 10 whose axis of rotation Z, vertical, is linked to this arm.
  • the roller 10 is forced to roll against a cam surface 7a whose layout is such that it imposes on the wheel 3, via the part 4 while the hub 4a thereof performs its movement of revolution around the axis X, strictly follow the outline of box 1 to be crimped.
  • This result is illustrated in FIG. 1, where two positions D, D 'of the part 4 and its accessories have been indicated, which, in position D', are designated by the same references as in position D, but assorted of the sign ['].
  • FIG. 1 shows that the hub 4a is mounted between the branches 5a, 5b of a part 5 further comprising a rotary sleeve 5c centered on the axis X, which can rotate around this axis but not move along that -this.
  • the hub 4a can rotate around the axis X, its own axis Y remaining at a constant distance R from the latter, while maintaining a constant spacing with the plane P, that is to say by describing a circle of axis X parallel to the plane P and distant from it by a fixed fixed quantity.
  • the wheel 3 is forced to move while remaining at a constant height above the plane P.
  • the head 4d of the arm 4c located at the end of the latter remote from the hub 4a, which moves while remaining in a mean plane Q parallel to the plane P and located at a fixed fixed distance H from this plane.
  • the head 4d of the arm 4c is equipped with a guide assembly 6 including the aforementioned roller 10, which compels the latter to follow, when the hub 4a rotates around the axis X, the cam surface 7a, produced in a fixed plate 8 known as a "reproduction cam", located at a determined distance J above the plane Q.
  • This surface is a cylindrical surface whose vertical generatrices rest on a line such that the axis Z of the roller 10 follows a trace G designed so that the axis V of wheel 3 moves accordingly along a path T "reproducing", taking into account the radius of the wheel, the outline of box 1.
  • the guide assembly 6 comprises a pin 9 fixed to the head 4d and offering a general shape of revolution around a vertical axis Z; this journal carries, in addition to the roller 10, a second rotating roller 11; these two rollers are mounted one above the other so that they can rotate around the same axis coinciding with the aforementioned Z axis.
  • the lower roller 10, of slightly larger diameter than the upper roller 11, has a cylindrical outer surface of revolution of axis Z and rolls against the cam surface 7a.
  • the upper roller 11 for its part has an outer surface of revolution not cylindrical, but curved, its section through a radial plane, passing through the axis Z, being constituted by an arc slightly convex towards the outside.
  • This roller cooperates with a cam follower surface 7b, produced in the plate 8 facing the cam surface 7a.
  • the surface 7b extends, like the surface 7a, following a path parallel to the line G along which the Z axis must move. It is also a regulated surface, including the generators, instead of being parallel to the Z and X axes , make with them a small angle F of a few degrees.
  • the distance between the cam 7a and cam follower 7b surfaces which form the sides of a groove 7 hollowed out in the plate 8, decreases as one moves away from the head 4d of the piece 4. As for the roller 11, it is adjacent to the bottom 7c of this groove.
  • the cam follower surface 7b does not continue, in the direction of the head 4d, beyond the roller 11, so as not to interfere with the roller 10, of larger diameter, interposed between it ci and said head.
  • the pin 9 is fixed to the head 4d by a threaded part 9a of axis Z which it comprises, which is screwed into a threaded conjugate passage which comprises the head 4d.
  • a threaded part 9a of axis Z which it comprises, which is screwed into a threaded conjugate passage which comprises the head 4d.
  • the convex roller 11 slides along a generatrix of the cam follower surface 7b inclined by the angle F relative to the axis X; it follows that, when one increases, by adjusting the position of the part 9 on the axis Z, the distance K of the roller 11 to the fixed plane Q where the head 4d moves, the clearance which existed between the surfaces 7a, 7b and the rollers 10, 11 of the guide assembly 6 decreases until it cancels, the two rollers 10, 11 then simultaneously pressing each against the surface 7a, 7b with which it cooperates, the roller 10 being in linear contact with the surface 7a and the roller 11 in point contact with the surface 7b.
  • the pin 9 When this setting is reached, the pin 9 is blocked in the head 4d by clamping its threaded part in the threaded passage of the head 4d, the latter being for this purpose open by a slot 13; a screw is engaged in holes 12 drilled in the two corresponding branches, separated by this slot, for tighten elastically these against the threaded part 9a of the pin 9 and lock the latter by pinching.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Pinball Game Machines (AREA)
  • Tyre Moulding (AREA)
EP93401560A 1992-06-22 1993-06-17 Bördelkopf für Konservendosen mit Spielregulierungsmitteln Expired - Lifetime EP0576332B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9207594A FR2692548B1 (fr) 1992-06-22 1992-06-22 Tête de sertissage pour boîte de conserve, dotée de moyens de réglage de jeu.
FR9207594 1992-06-22

Publications (2)

Publication Number Publication Date
EP0576332A1 true EP0576332A1 (de) 1993-12-29
EP0576332B1 EP0576332B1 (de) 1996-04-17

Family

ID=9431021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401560A Expired - Lifetime EP0576332B1 (de) 1992-06-22 1993-06-17 Bördelkopf für Konservendosen mit Spielregulierungsmitteln

Country Status (5)

Country Link
US (1) US5390471A (de)
EP (1) EP0576332B1 (de)
DE (1) DE69302227T2 (de)
ES (1) ES2086902T3 (de)
FR (1) FR2692548B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1892191A1 (de) * 2005-05-17 2008-02-27 Toyo Seikan Kaisha, Ltd. Quadratische dose und verfahren und vorrichtung zum doppeltwalzen derselben

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6163951A (en) * 1999-03-31 2000-12-26 Sealright Co., Inc. Method and apparatus for lifting tabs of a laminate from a substrate
GB9912264D0 (en) * 1999-05-27 1999-07-28 Meltog Ltd Adjustment mechanism

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907293A (en) * 1956-10-09 1959-10-06 Angelus Sanitary Can Machine C Seaming head for non-circular cans
FR1220627A (fr) * 1958-05-30 1960-05-25 Metal Box Co Ltd Perfectionnements aux mécanismes d'agrafage destinés à fixer les fonds aux corps de boîtes métalliques

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1972866A (en) * 1931-07-06 1934-09-11 American Can Co Double seaming head
US2149543A (en) * 1936-12-24 1939-03-07 Peyser Hansen Machine Co Inc Seaming mechanism
US2271152A (en) * 1938-05-28 1942-01-27 Continental Can Co Square can seaming head
US2432815A (en) * 1943-06-28 1947-12-16 Continental Can Co Square can seaming head
US2467154A (en) * 1946-07-26 1949-04-12 Pacific Can Company Noncircular can seaming head

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907293A (en) * 1956-10-09 1959-10-06 Angelus Sanitary Can Machine C Seaming head for non-circular cans
FR1220627A (fr) * 1958-05-30 1960-05-25 Metal Box Co Ltd Perfectionnements aux mécanismes d'agrafage destinés à fixer les fonds aux corps de boîtes métalliques

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1892191A1 (de) * 2005-05-17 2008-02-27 Toyo Seikan Kaisha, Ltd. Quadratische dose und verfahren und vorrichtung zum doppeltwalzen derselben
EP1892191A4 (de) * 2005-05-17 2008-06-04 Toyo Seikan Kaisha Ltd Quadratische dose und verfahren und vorrichtung zum doppeltwalzen derselben

Also Published As

Publication number Publication date
DE69302227D1 (de) 1996-05-23
ES2086902T3 (es) 1996-07-01
US5390471A (en) 1995-02-21
EP0576332B1 (de) 1996-04-17
FR2692548B1 (fr) 1994-10-07
DE69302227T2 (de) 1996-09-12
FR2692548A1 (fr) 1993-12-24

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