EP3231567B1 - Moulding apparatus for manufacturing agglomerated cork stoppers - Google Patents

Moulding apparatus for manufacturing agglomerated cork stoppers Download PDF

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Publication number
EP3231567B1
EP3231567B1 EP17165014.6A EP17165014A EP3231567B1 EP 3231567 B1 EP3231567 B1 EP 3231567B1 EP 17165014 A EP17165014 A EP 17165014A EP 3231567 B1 EP3231567 B1 EP 3231567B1
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EP
European Patent Office
Prior art keywords
plate
shutter
central plate
closure
actuator
Prior art date
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Active
Application number
EP17165014.6A
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German (de)
English (en)
French (fr)
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EP3231567A1 (en
Inventor
Riccardo Cavallini
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.)
MEACCI Srl
Original Assignee
Meacci Srl
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Publication date
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Publication of EP3231567A1 publication Critical patent/EP3231567A1/en
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Publication of EP3231567B1 publication Critical patent/EP3231567B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N5/00—Manufacture of non-flat articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
    • B27J5/00—Mechanical working of cork

Definitions

  • the present invention concerns the field of machines for manufacturing stoppers formed from agglomerated cork, and more specifically its object is a moulding apparatus for manufacturing agglomerated cork stoppers in two different heights.
  • cork stoppers are manufactured according to different methods, dependent on the quality of the raw material available. High quality productions foresee that stoppers be manufactured in a single piece from a compact cork matrix coming directly from the tree bark, whereas lower quality products foresee the use of agglomerated cork granules coming from the machining waste of high quality stoppers or from batches of quality not suitable for single-piece stoppers; such granules are bound by a matrix of non-toxic glue.
  • agglomerated cork stoppers There are different techniques for manufacturing agglomerated cork stoppers.
  • doses of agglomerated cork granules mixed with glue are fed inside moulds comprising moulding bushes.
  • the agglomerated cork with glue is then pressed and subsequently transferred in a furnace for the time necessary for solidification.
  • the stopper is extracted from the moulding bush by thrusting of a rod-shaped extraction body.
  • the preparation of the correct dose of granules to be introduced into the corresponding mould takes place through dosing machines.
  • the moulding system for stoppers comprises transportation means consisting of chains to which the moulds are fixed in series. Such means move the moulds according to a cycle that comprises the passage through the dosing machine, the passage in the furnace and finally in the extraction area.
  • a known mould for manufacturing agglomerated cork stoppers comprises a framework formed from two elongated plates and a series of moulding bushes aligned and juxtaposed between such plates. On the latter there are holes, each hole corresponding to a single bush.
  • the bushes are fixed to a common displacement actuator that allows the movement thereof along a line from a configuration in which the bushes are arranged in a corresponding manner to the holes of at least one fixed plate, to allow the loading of the doses of cork granules, to a translated configuration in which the bushes are closed by the inner faces of the plates, to allow the moulding step.
  • a mould for manufacturing agglomerated cork stoppers comprising a pair of fixed plates that are parallel and spaced apart, distributions of holes formed on the plates and mutually corresponding from plate to plate, and a plurality of cylindrical moulding bushes defining respective seats, in a number corresponding to that of the holes and arranged between the fixed plates, fixedly connected to each other by means of an actuation member adapted for moving them between an opening position, in which the correspondence between the holes of the fixed plates and the seats of the bushes is obtained, and a closure position in which the seats of the bushes are shut by the solid part of the fixed plates.
  • the mould also comprises an adjustment plate in contact with one of the fixed plates and in turn carrying a distribution of holes corresponding to that of the fixed plates, whereby the bushes abut at an axial end on the adjustment plate and at the opposite end on a fixed plate.
  • a releasable locking system is adapted to lock the adjustment plate to the adjacent fixed plate when the respective holes are mutually aligned.
  • the pulling element is slidable in a direction orthogonal to the plane of the actuation motion along a guide structure fixedly connected to the actuation member, between a first configuration, spaced and disengaged from the adjustment plate, corresponding to a configuration for obtaining stoppers having a lower height, and a second configuration in which it engages with the adjustment plate, corresponding to a configuration for obtaining stoppers of greater height, the two configurations being reversibly locked by a stop ring operating in abutment on the pulling ring.
  • This adjustment system makes it possible to convert a single mould to the production of two different stopper sizes, with an acceptable constructive complication and with a relatively simple manoeuvre. Nevertheless, it is still necessary for a staff operator to personally act on each active mould, modifying the configuration, tampering with the releasable locking system between the adjustment plate and the adjacent fixed plate and also the (numerous, as many as the number of holes) lifting heads or rods that have a different configuration depending on whether the stopper to be made is of one height or the other. Such a size change manoeuvre therefore takes indeed a certain time, especially if, as frequently occurs in common installation environments, it is obstructed by the need to work in restricted spaces.
  • IT1218538B discloses an automatic fabricator for agglomerated cork bark rolls and consists of dies carrying cork and agglutinant mix in polymerisation chamber with roll coolers.
  • the object of the present invention is therefore that of providing a double height moulding system for manufacturing in agglomerated cork, which allows even easier and in any case quicker conversion from the configuration for manufacturing so-called “tall” stoppers to that for manufacturing so-called “short” stoppers, and vice-versa.
  • the moulding apparatus provides the use of an actual mould, a frame 1 of which is formed from a pair of fixed plates 11, 12 elongated according to a longitudinal direction X.
  • the plates 11 and 12 are kept integrally parallel and spaced (according to a height direction Z) by support columns 13 arranged along the longitudinal sides and comprise respective distributions of holes 14, 15 in mutually corresponding (centered) positions between the two plates.
  • the holes 14, 15 are representative of the number of cork stoppers that can be obtained with the mould and are adapted to correspond with cylindrical stopper moulding bushes, indicated with 2 and arranged between the two plates with the respective central axes rising in the height direction Z.
  • the bushes 2 are fixedly connected to a central movable plate 21 for opening/closing the mould inside which the bushes themselves are mounted and that is arranged parallel to the two fixed plates 11, 12, roughly at half the height of the space defined between them.
  • the central plate is intended to move alternately along a direction of actuation in the longitudinal direction X, driving the bushes, between a closure position and an opening position, which will be discussed further hereinafter.
  • the movement is controlled by drive means that in turn will be described shortly, and is guided/controlled with respect to the fixed plates by peg structures 22, fixedly connected to the central plate 21 one on each longitudinal end of the mould and that slidably engage in slots 16, 17 formed in the fixed plates.
  • a further volumetric or adjustment plate 3 having a profile that in turn copies that of the previous plates, is arranged between the two fixed plates but in this case in direct contact and juxtaposition with one of them, for example and in particular the upper one 12 (the reference being to the configuration of use in which the plates are horizontal and indeed at different heights).
  • the adjustment plate 3 in turn carries a distribution of holes 31 substantially corresponding, in number, size and position, to the distributions of holes on the fixed plates (and to the seats defined by the bushes).
  • the bushes 2 are therefore positioned in axial abutment between the lower fixed plate 11 and the adjustment plate 3.
  • the latter is in turn movable along the direction of actuation X from a first to a second position with a run corresponding to the relative run between the central plate 21 and the fixed plates, thanks to slots 32 like the slots 16, 17 that slidably engage with the pegs 22.
  • the first position is displaced leftwards (spatial reference as in figures 3 to 6 ) or more generally speaking in correspondence to the opening position of the central plate 21, while the second position is displaced rightwards as per the closing position of the central plate 21.
  • the assembly described above which as stated represents the actual mould, is intended to cooperate, in a moulding station of the apparatus, with an overlying known loading drawer, not shown overall.
  • the drawer from which the agglomerated cork intended for forming the stoppers is indeed supplied to the mould, has a bottom determined by a shutter 5 in turn plate-shaped and with which the upper plate 12 is adapted for being arranged in contact.
  • the shutter 5 is in turn movable in an alternate manner according to the longitudinal or actuation direction X, between a closure position and open position, in which it respectively blocks the flow of agglomerated cork and allows it to flow towards the holes and consequently the underlying bushes if they are in turn in the suitable position.
  • the mould is supported towards and in the station by a transportation system that allows it to be lifted, said system in turn not being represented being it known per se and in any case of an obvious nature to the skilled person, adapted for moving the assembly of the mould between a lowered transit, or inactive configuration, and a lifted or loading configuration in which the upper plate 12 makes contact with the shutter 5.
  • the mould also cooperates with an actuation system that according to the preferred solution foresees four linear actuators, typically in the form of respective oil-hydraulic cylinders, arranged in pairs at respective longitudinal ends of the frame 1 to act by thrust on the corresponding ends of the central plate 21, on the shutter 5 and if necessary on the volumetric plate 3, when the mould is in the raised/lifted configuration.
  • four linear actuators typically in the form of respective oil-hydraulic cylinders, arranged in pairs at respective longitudinal ends of the frame 1 to act by thrust on the corresponding ends of the central plate 21, on the shutter 5 and if necessary on the volumetric plate 3, when the mould is in the raised/lifted configuration.
  • the thrust member 8a of the cylinder 8 for opening the central plate 21 is a block of reduced thickness in height, adapted for abutting on the end of the plate itself and only on it;
  • the thrust member 9a of the cylinder 9 for opening the shutter 5 on the other hand is preferably C-shaped, whereby the abutment on the end of the same shutter is entrusted to a top arm, while a lower arm is intended for actuating the adjustment plate 3 below.
  • the two arms are spaced by a slit that is adapted for receiving the upper fixed plate 12 in some actuation conditions, as will be seen in detail when describing how the mould works.
  • the thrust member 6a of the cylinder 6 for closing the central plate 21 has, in a first configuration for obtaining "tall" stoppers ( figure 3 ) an extension in the height direction Z such as to abut not only on the end of the aforementioned plate, but also on the volumetric plate 3.
  • the thrust member 7a' with respect to the thrust member 7a, can therefore have a part projecting at the bottom, in any case spaced from the "short" thrust member 6a'.
  • the thrust member 7a or 7a' can comprise a rear portion that rests for reference and guiding purposes on the stem of the actuator 6.
  • the thrust members are in general configured so that the forwards displaced actuation configuration of a thrust member at one end takes the actuated element in abutment on a thrust member at the opposite end.
  • Figure 5d shows the next step, in which by means of the movement of the cylinder 9 and through the relative thrust member 9a (more precisely the top arm thereof) the shutter 5 opens, going into abutment on the thrust member 7a of the cylinder 7 at the opposite end.
  • the shutter 5 opens, going into abutment on the thrust member 7a of the cylinder 7 at the opposite end.
  • Such movement is permitted thanks to the slit of the thrust member 9a, said slit housing the fixed upper plate 12 not allowing it to cause mechanical hindrance.
  • the thrust member 9a through its lower arm ensures with certainty that the volumetric plate 3 is also in an opening (or first) position, in this case abutting on the thrust member 6a (which in this configuration for this purpose is indeed of increased height) of the cylinder 6.
  • the mould is opened, with the holes of the volumetric or adjustment plate 3 centered with those of the bushes, and can thus be loaded for the formation of "tall" stoppers.
  • the holes of the volumetric plate 3 determine an elongation of the volume of the respective bushes, and by moving the two parts in a coordinated manner such a volume is shut in the closure position, in this case, by the upper fixed plate 12.
  • the rearwards movement of the cylinder 9 that by carrying the thrust member 9a in the rearwards position helps the rightwards (as seen in the figures) movement of the volumetric plate, eventually determining, again with its lower arm, a stop abutment thereof. With this movement, the slit of the thrust member 9a frees itself from the engagement with the upper fixed plate 12. The mould is thus loaded and closed.
  • the cylinder 6 now makes its thrust member 6a move back to free the mould ( figure 5g ), which can be lowered to the final configuration of the cycle ( figure 5h ).
  • the cylinder 7 moves forward to close the shutter ( figure 5i ) and with the subsequent movement back of the same cylinder ( figure 5l ) the cycle ends, arranging the station for the start of the next cycle.
  • stoppers of lower height (which corresponds to the net height of the bush) are thus made because the bushes indeed slide, in their actuation motion driven via the central plate 21 by the thrust member 6a', with respect to the adjustment plate 3 that remains stationary, and it is the latter, with its solid part, that shuts the opening of the bushes in the closure position.
  • the mould, closed and loaded, must be freed by making the cylinder 6 move rearwards ( figure 6f ), and then it is lowered ( figure 6g ).
  • the cylinder 7 for closing the shutter operates with the thrust member 7a' making the shutter itself move forward until it abuts on the top arm of the thrust member 9 ( figure 6h ) and finally with the withdrawal of the same cylinder 7 the end of cycle is reached according to figure 6i .
  • the two heights of stoppers that can be made are typically 39 mm and 45 mm, by means of an adjustment plate having a height of 6 mm, these being the most common standards in the field, but obviously, based on the same principle, different sizes can be obtained.
  • the moulding apparatus suitable for making two different sizes of stoppers with a very fast and easy conversion is obtained; such conversion between the two arrangements consisting only in the replacement of two thrust members of the actuation cylinders and a minimal variation of the operative sequence that can easily and obviously be set on the control means of the apparatus.
  • the mould does not undergo any intrinsic change of configuration, remaining the same (of simplified structure with respect to the system known previously and with the volumetric plate always remaining mechanically independent) for the two options, the different functionality of which being handled by the actuation system.
  • the adjustment plate 3 arranged in the upper part of the mould also makes it possible to avoid the replacement of the lifting heads, a simple adjustment of the pressing rods being sufficient.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Basic Packing Technique (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP17165014.6A 2016-04-11 2017-04-05 Moulding apparatus for manufacturing agglomerated cork stoppers Active EP3231567B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUA2016A002476A ITUA20162476A1 (it) 2016-04-11 2016-04-11 Apparecchiatura di stampaggio per la realizzazione di tappi in agglomerato di sughero

Publications (2)

Publication Number Publication Date
EP3231567A1 EP3231567A1 (en) 2017-10-18
EP3231567B1 true EP3231567B1 (en) 2018-10-24

Family

ID=56413786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17165014.6A Active EP3231567B1 (en) 2016-04-11 2017-04-05 Moulding apparatus for manufacturing agglomerated cork stoppers

Country Status (4)

Country Link
EP (1) EP3231567B1 (it)
ES (1) ES2704927T3 (it)
IT (1) ITUA20162476A1 (it)
PT (1) PT3231567T (it)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1218538B (it) * 1987-03-19 1990-04-19 Meacci Srl Apparecchiatura per la produzione automatica di tappi di sughero agglomerato
DE602007008059D1 (de) * 2007-04-04 2010-09-09 Meacci S R L Dosiermaschine für Korkgranulat zur Herstellung agglomerierter Pfropfen
PT2177331E (pt) * 2008-10-20 2013-05-06 Meacci S R L Molde para fabrico de rolhas de cortiça aglomerada
IT1391079B1 (it) 2008-10-20 2011-11-18 Meacci S R L Stampo per la realizzazione di tappi in agglomerato di sughero
IT1401080B1 (it) * 2010-07-21 2013-07-12 Meacci S R L Dispositivo orientatore di tappi per bottiglie

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ITUA20162476A1 (it) 2017-10-11
EP3231567A1 (en) 2017-10-18
ES2704927T3 (es) 2019-03-20
PT3231567T (pt) 2018-12-18

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