EP2164691A2 - Appareil - Google Patents

Appareil

Info

Publication number
EP2164691A2
EP2164691A2 EP08750955A EP08750955A EP2164691A2 EP 2164691 A2 EP2164691 A2 EP 2164691A2 EP 08750955 A EP08750955 A EP 08750955A EP 08750955 A EP08750955 A EP 08750955A EP 2164691 A2 EP2164691 A2 EP 2164691A2
Authority
EP
European Patent Office
Prior art keywords
mould
extracting
forming
moving
appendage
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.)
Withdrawn
Application number
EP08750955A
Other languages
German (de)
English (en)
Inventor
Stefano Elmi
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.)
Sacmi Imola SC
Original Assignee
Sacmi Imola SC
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 Sacmi Imola SC filed Critical Sacmi Imola SC
Publication of EP2164691A2 publication Critical patent/EP2164691A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0081—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor of objects with parts connected by a thin section, e.g. hinge, tear line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers

Definitions

  • the invention relates to apparatuses for forming objects, in particular objects made of plastics.
  • the invention further relates to extracting devices associated with apparatuses for forming objects and devices for extracting objects formed with said apparatuses.
  • the objects can be formed by compression-moulding, or by injection-moulding, or by any other suitable moulding technique .
  • the formed objects may comprise objects provided with a body and an appendage connected, by an elastic hinge made of plastics, to the body, and movable with respect to the body.
  • Such objects may further comprise caps, for example caps in two parts, comprising a base body and a lid connected to the base body by an elastic hinge made of plastics .
  • the base body is associated, in use, for example by screwing, to a desired container.
  • the lid is moved, owing to the elastic hinge, with respect to the base body, between a closing position in which the lid is superimposed on the base body to close the cap, and an opening position in which the lid is moved away from the base body and it is possible to access the substance contained in the container.
  • Such caps are usually identified as “flip-top” caps.
  • Known apparatuses for producing "flip-top” caps comprise a forming mould provided with a first cavity for forming the base body of the cap and a second cavity for forming the lid of the cap, the first cavity and the second cavity being connected together and shaped so that an elastic connecting hinge is formed between the base body and the lid.
  • the first cavity and the second cavity are positioned so that the base body and the lid are alongside one another.
  • the caps are formed by a desired moulding technique, for example injection-moulding.
  • Known moulds for "flip-top" caps comprise two rows of forming moulds .
  • the mould is opened, so as to disengage from the undercut portions of the formed cap, and an extracting system is subsequently driven for extracting the caps from the mould.
  • an extracting system is known comprising an internal extracting device inside the mould, and an external closing device outside the mould.
  • the internal extracting device comprises a first extracting plate that is vertically movable with respect to the forming mould and is positioned inside the body of the forming mould.
  • the external closing device comprises a comb device mounted on a plane outside the forming mould and fixed to a moving plate, that is movable in a direction that is transverse to the forming mould.
  • the first extracting plate In order to extract a flip-top cap, the first extracting plate is moved by lifting the first extracting plate so as to lift consequently the extracting rod fixed to the first extracting plate, the extracting rod sliding along the longitudinal axis thereof.
  • an upper end of the extracting rod comes progressively to abut on a surface of the lid.
  • the upper end of the extracting rod pushes against the lid, rotating it around the hinge by about 90° with respect to the forming position.
  • the lid is taken from the forming position in which it is alongside the base body, to an intermediate position in which the lid is positioned in a plane that is perpendicular to that of the base body.
  • the moving plate of the comb device is driven so as to move the comb device towards the forming mould.
  • the comb device is brought from a rest position in which the comb device is moved away from the forming mould to a working position in which the comb device interacts with the lid.
  • an active end of the comb device positioned on the forming mould side, is pushed progressively to abut 5 on the surface of the lid.
  • the active end of the comb device pushes the lid, rotating the lid around the hinge by a further 90° with respect to the intermediate position to which it had been taken by the internalo extracting device.
  • the lid is superimposed on the base body of the cap.
  • the cap is then taken to the closing configuration thereof.
  • This extracting system is provided with two distincts actuating mechanisms, in fact, the internal extracting device and the external closing device are driven independently of one another.
  • first actuating mechanism arranged for driving the first extracting plate
  • second actuating0 mechanism arranged for driving the moving plate of the comb device.
  • a second extracting plate which is provided inside the forming mould and is verticallys movable with respect to the forming mould, to extract the cap closed by the forming mould.
  • An annular extracting element is fixed to the second extracting plate shaped so as to be coupled with the section of the base body of the cap. o By lifting the second extracting plate, the annular extracting element comes progressively to abut against a base zone of the base body and progressively pushes the cap outside the forming cavity.
  • the extracting system disclosed above is complex as it comprises an internal extracting device and an external closing device.
  • this extracting system limits the number of forming moulds that can be provided in the same forming apparatus . This consequently limits the number of caps that can be moulded during a stroke of the mould.
  • each forming mould has to be accessible at least on one side to enable the comb device to approach and interact with the lid.
  • the extracting system is particularly bulky.
  • a space has to be provided for housing the comb device in a position thereof distanced from the forming mould and the driving devices of the comb device.
  • a "flip-top" caps extracting system comprising a first annular extractor and a second annular extractor positioned outside the first annular extractor.
  • the first and the second annular extractor are positioned inside a first mould portion of the forming mould, so as to be associated with a forming cavity portion in which the cap bodies are formed and are fixed to respective moving plates.
  • the cap extracting system further comprises a closing device for closing, on the respective cap bodies, the formed lids.
  • the closing device is fixed to a supporting plate connected to linear actuators for driving the closing device.
  • each rod being provided with a respective conducting rod that is hinged on a free end of the rod, i.e. the end opposite the supporting plate.
  • constrained rollers that are free to rotate, i.e. idle rollers.
  • Each idle roller is movable between a rest position, in which the roller is housed in a seat provided on an upper s surface of the first mould portion of the forming mould, at the side of the forming cavities, and an end stroke position in which the rollers close the lids on the respective cap bodies .
  • the mould is opened, by moving the second mould portion away from the first mould portion, the first and the second annular extractor are moved so as to partially extract the cap bodies and the lids from the respective forming cavities by acting on thes respective moving plates.
  • the lids can rotate and are laterally accessible to the closing device.
  • the linear actuator is driven that controls the supporting plate to move the rods axially, and,0 consequently, by means of the connecting rods, to push the idle rollers to the lids along a trajectory defined by guiding grooves in which opposite ends of the idle rollers are received.
  • the idle rollers5 move towards the lids and rotate the lids around the hinge to close the lids on the cap bodies.
  • the supporting plate is further moved that in turn moves the second plate to which the second annular extractor is connected.
  • the second annularo extractor acts on the respective cap bodies, ejecting the cap bodies from the respective forming cavities to make the cap bodies fall onto collecting devices.
  • the closing device in the rest position is positioned laterally with respect to each row of forming cavities, on the lids side.
  • each row of lids has to be laterally accessible too the closing device.
  • EP 1 386 712 there is provided a plurality of moving devices, one for the first annular extractor, one for the second annular extractor, and one for the closingo device .
  • An object of the invention is to improve extracting devices for extracting objects in two parts. o A further object of the invention is to improve extracting devices for extracting "flip-top" caps.
  • a still further object is to provide extracting devices for extracting "flip-top” caps having a compact and simplified structure . 5 A still further object is to provide extracting devices for extracting "flip-top” caps that have simplified operation. Another object of the invention, is to improve the forming apparatuses for forming "flip-top” caps.
  • a still further object is to provide forming apparatuses for forming "flip-top” caps having high productivity.
  • a still further object is to provide forming apparatuses for forming "flip-top” caps having limited overall dimensions.
  • an apparatus comprising a mould body from which formed objects have to be extracted, said formed objects having a base body and an appendage connected to said base body, an extracting device for extracting said appendage from said mould body and for coupling said appendage to said base body, said extracting device comprising pushing means that is movable along a linear path to move away said appendage from said mould body, characterised in that said pushing means is further movable along a curvilinear path for rotating said appendage onto said base body.
  • the extracting device according " to the invention can be housed inside the body and/or a supporting structure of the forming apparatus, further reducing the overall dimensions of the apparatus .
  • the extracting device further comprises a moving device to which the pushing means is fixed and which is substantially movable inside the body of the apparatus.
  • the mould body of an apparatus according to the invention can be shaped so as to provide a considerable number of forming cavities for forming a considerable number of objects .
  • the mould body of an apparatus according to the invention can be shaped so as to form a number of forming cavities that is greater than what is provided in the prior art.
  • Such forming cavities can be positioned so as to form a desired number of rows and/or lines.
  • the forming cavities of known apparatuses have to be accessible in two directions that are transverse to one another to enable both the internal extracting device and the external closing device to interact with the appendages.
  • the extracting device according to the invention it is sufficient for the formed objects to be accessible in a single direction to enable the extracting device to interact with the appendages .
  • the extracting device further comprises further pushing means configured like, the pushing means and arranged for interacting with a further appendage of a further object, which is formed with said apparatus.
  • the further pushing means is positioned ino a symmetrical manner with respect to the pushing means, so as to be movable . along a further linear path that is substantially parallel to said linear path, and along a further curvilinear path that is substantially coplanar and in an opposite direction to said curvilinear path.
  • a driving mechanism arranged for driving said extracting device comprising a linear driving mechanism, for example a5 pneumatic piston.
  • said pushing means comprises a plurality of pushing elements shaped so as to interact with a plurality of appendages of a plurality of objects formed in said apparatus . o Each pushing element of said plurality of pushing elements is shaped so as to interact with a corresponding appendage of said plurality of appendages.
  • Each appendage of said plurality of appendages belongs to an object of said plurality of objects. In this manner, it is possible to interact simultaneously with a high number of caps, possibly with all the caps formed in an apparatus .
  • a method comprising extracting formed objects from a mould body, said formed objects having a base body and an appendage connected to said base body, coupling said appendage with said base body, said extracting comprising linearly moving an extracting device to move away said appendage from said mould body, characterised in that said driving further comprises rotationally moving said extracting device to rotate said appendage onto said base body.
  • said extracting comprises driving a driving device of said extracting device.
  • said driving comprises driving a linear driving device .
  • Figure 1 is a side view of a flip-top cap in a closed position
  • Figure 2 is a side view of the cap in Figure 1 in an open position
  • Figure 3 is a plan view of an apparatus for forming "flip- top” caps
  • Figure 4 is a section taken along the plane IV-IV in Figure 3 that shows two forming cavities of the apparatus in Figure 3 in a first operating position
  • Figure 5 is a view like the one in Figure 4 that shows the apparatus in a second operating position
  • Figure 6 is a view like the one in Figure 4 that shows the apparatus in a third operating position
  • Figure 7 is a view like the one in Figure 4 that shows the apparatus in a fourth operating position
  • Figure 8 is a view like the one in Figure 4 that shows the apparatus in a fifth operating position.
  • a cap 100 of the flip-top type comprising a base body 101 and a lid
  • the elastic hinge 103 is shaped so that the lid 102 can be rotated, with respect to the base body 101, in the direction indicated by the arrow F, between a closing position X, shown in Figure 1, in which the lid 102 is positioned above the base body 101, and an opening position Y, shown in
  • the base body 101 comprises a skirt 104 arranged for being coupled with a neck portion of a container, and a spout 106 that projects from the skirt 104.
  • the spout 106 is used to dispense the substance contained in the container with which the cap 100 is associated, and comprises a nozzle 110 for the exiting of the substance.
  • the spout 106 is positioned directly in the mouth of a user so that through the nozzle 110 the user receives the fluid contained in the container easily and directly from the container.
  • the skirt 104 has an almost annular shape with a preferably circular base section defining a diameter D and being bounded by an edge 113.
  • opening indicating means On the skirt 104 there is provided opening indicating means
  • the skirt 104 is further internally provided with a thread 105 that enables the cap 100 to be screwed onto/unscrewed from a desired container.
  • the lid 102 is shapingly coupled with the base body 101, so as to enable the spout 106 to be correctly housed and the cap 100 to be sealingly closed.
  • the lid 102 comprises a bottom surface 114 from which protrusions 107 project internally that engage, in the closing position X, with respective recesses 108 of the spout 106 so that between two successive protrusions 107 of the lid 102 there is interposed a further protrusion 112 of the spout 106.
  • the shapingly coupling between the lid 102 and the base body 101 is improved in the closing position X of the cap 100.
  • the lid 102 further comprises a grip portion 109, provided on an external surface of the lid 102, and arranged for facilitating the lifting of the -lid 102 from the base body 101 to open the cap 100.
  • the cap 100 can be sealed externally by sealing means that are not shown, for example film made of plastics to preserve the integrity of a package.
  • the cap 100 can be obtained from any suitable forming apparatus, for example with the apparatus 1 shown in Figures 3-8.
  • a forming apparatus 1 comprising a supporting structure 10 in which there is obtained a plurality of forming moulds 2, each suitable for moulding a cap in two parts, for example the cap 100.
  • the apparatus 1 is suitable for forming objects made of plastics in two parts, comprising a base body and an appendage connected to the base body by an elastic hinge, such as, for example, the cap 100.
  • the apparatus 1 can use a compression-moulding forming process, or also an injection-moulding process, or any other suitable technique for forming objects made of plastics in two parts .
  • Each forming mould 20 of the plurality of forming moulds 2 5 comprises a first half mould 21 and a second half mould, not shown in the figures, and arranged for shapingly coupling with the first half mould 21 to define a forming cavity having the shape of a cap 100.
  • the first half mould 21 and the second half mould compriseo protruding and recessed portions positioned so that between the first half mould 21 and the second half mould the cap 100 is formed having the shape disclosed above.
  • the first half mould 21 comprises a first mould portion.22 and a second mould portion 23 that are movable in thes direction of the arrow Fl between a forming position K, shown in Figures 23 and 4, and a detachment position J shown in Figures 5-8.
  • the first mould portion 22 and the second mould portion 23 are connected to a driving device, which is not shown,o a.rranged for moving the first mould portion 22 and the second mould portion 23 between the forming position K and the detachment portion J.
  • the first mould portion 22 and the second mould portion 23 are close and positioned so as5 to define a portion of mould cavities 24 for forming the cap 100.
  • the first mould portion 22 and the second mould portion 23 are spaced apart from one another, so that the undercut portions of the cap 100 can beo freed.
  • the first mould portion 22 and the second mould portion 23 are further shaped so that the portion of mould cavities 24 defined thereby comprises a first mould cavity 26 arranged for forming the base body 101 of the cap 100, a second mould cavity 27 arranged for forming the lid 102, and a cavity 28 defined between the first and the second mould cavities 26, 27 for forming the hinge 103.
  • the second half mould comprises mould portions that are suitably shaped so as to be coupled respectively with the first and the second mould cavities 26, 27 for forming the base body 101 and the lid 102 of the cap 100.
  • the second half mould and/or the first half mould 21 are mutually movable in the direction of the further arrow F2, shown in Figure 4, to enable the forming of the cap 100, between a moulding position that is not shown, in which the second half mould and the first half mould 21 are close to one another to form the cap 100, and a distanced position, shown in Figures 3-8, in which the second half mould and the first half mould 21 are moved away from one another and it is possible to access the formed cap 100.
  • the first half mould 21 is fixed and cooperates to form a cap 100 with a second half mould that is movable with respect to the first half mould 21.
  • the first mould cavity 26 is shaped so as to form the base body 101 and in particular the skirt 104.
  • An internal surface of the first mould cavity 26 is shaped so as to form the thread 105.
  • the first mould cavity 26 further comprises a first bottom surface 29 shaped so as to form the edge 113 of the base body 101, in this manner, the base body 101 of the cap 100 is shaped with the spout 106 that projects from the first bottom surface 29 of the first mould cavity 26.
  • the second mould cavity 27 is shaped so as to form the lid 102 of the cap 100, and comprises a second bottom surface 30 shaped so as to form the surface 114 of the lid 102 and the protrusions 107 of the lid 102.
  • Each forming mould 20, further, is connected to a cooling device 31 for cooling the portion of mould cavities 24, and in particular the first mould cavity 26.
  • the cooling device 31 may comprise a supplying conduit for conveying a desired cooling fluid to the portion of mould cavities 24, and a return conduit to move away the fluid that is heated by cooling the portion of mould cavities 24.
  • the return conduit can convey the cooling fluid to a coolingo unit to be cooled again, or to a discharging unit by which the fluid can be discharged to the exterior.
  • the apparatus 1 can be provided with a desired number of forming moulds 20.
  • twenty-four forming moulds 20 ares provided arranged on six rows .
  • each row there are provided four forming moulds 20, i.e. four lines are provided each containing six forming moulds 20. In other embodiments- any number of forming moulds can beo provided.
  • the various forming moulds provided can be positioned in various manners in the forming or moulding apparatus so as to define a desired number of lines and/or of rows of moulds having a desired number of moulds. 5
  • the forming moulds 20 provided in the apparatus 1 are associated together, in the manner disclosed below to form a plurality of pairs 3 of forming moulds.
  • Figures 4-8 there is shown a pair of forming moulds 4 of the plurality of pairs 3 provided in the apparatus 1, ino various operating positions, as disclosed better below.
  • Each pair of forming moulds 4 of the plurality of pairs 3 comprises a first forming mould 5 and a second forming mould 6 that are positioned in a specular manner to one another, as shown in Figure 3, and explained below.
  • the first forming mould 5 and the second forming mould 6 comprise first portions of forming moulds shown in Figures 4-8 cooperating with respective second mould portions, which are not shown, for generating forming cavities shaped so as to form the caps 100.
  • the first mould portion of the first forming mould 5 5 comprises a first and a second half mould that are mutually movable and cooperating to form a first portion of mould cavities 50.
  • the first portion of mould cavities 50 comprises a first forming cavity 7 for forming the base body 101 of the capo 100, a second forming cavity 8 for forming the lid 102, a third forming cavity 12 for forming the hinge 103.
  • the second forming mould 6 is shaped like the first forming mould 5 and comprises respective half moulds cooperating to . shape a second portion of mould cavities 60. s
  • the second mould cavities 60 comprises a further first forming cavity 9 for forming a further base body 101a, a further second forming cavity 11 for forming a further lid
  • the first forming mould portions and the second mould portions of the first and of the second forming mould 5, 6 are further shaped so as to form the cap 100 and the further cap 100a in the opening position Y.
  • the first and the second forming mould 5, 6 of a same pair5 of forming moulds 4 are configured so that the second forming cavity 8 and the further second forming cavity 11 are alongside one another and are interposed between the first forming cavity 7 and the further first forming cavity
  • the lid 102 and the further lid 102a formed with each pair of forming moulds 4 are alongside one another and interposed between the base body 101 and the further base body 101a.
  • Each pair of forming moulds 4 is provided with an extracting5 device 15 for extracting the base body 101 of the cap 100 from the first forming cavity 7 and the further base body J. /
  • the extracting device 15 comprises a first extracting plate 14 housed inside the supporting structure 10 of the apparatus 1 and a driving device, to move the first extracting plate 14 in the direction of the further arrow F2, between a rest position W shown in Figures 4-7 in which the extracting device 15 does not interact with the caps formed and the caps are housed in the respective forming cavities, and an ejecting position Z shown in Figure 8, in which the extracting device 15 has interacted with the formed caps and the caps are ejected from the respective forming cavities.
  • the driving device comprises, preferably a linear driving device, for example a pneumatic piston, or also a worm screw.
  • the extracting device 15 further comprises a first tubular body 17 and a second tubular body 18 fixed to the first extracting plate 14, by a respective base end 17a, 18a.
  • the first and the second tubular body 17, 18 comprise- respectively an end 17b, and a further end 18b opposite the respective base ends 17a, 18a and arranged for interacting respectively with the edge 113 of the base body 101 formed in the first forming cavity 7 and with the further edge 113a of the further base body 101a formed in the further first forming cavity 9.
  • the first tubular body 17 and the second tubular body 18 are shaped so that the end 17b and the further end 18b are shapingly coupled with the edge 113 and with the further edge 113a.
  • the first tubular body 17 and the second tubular body 18 are housed inside the supporting structure 10, and the end 17b and the further end 18b are spaced apart respectively from the edge 113 and from the further edge 113a.
  • the first mould portions of the first forming mould 5 and of the second forming mould 6 are interposed, in this position, respectively between the end 17b and the edge 113 and between the further end 18b and the further edge 113a.
  • a single extracting device comprising a plurality of tubular bodies connected to a single extracting plate.
  • the number of tubular bodies corresponds to the number of base bodies 101, and/or of caps 100, formed in the same row of moulds, and therefore of the forming cavities provided in each row.
  • a single moving device arranged for moving the extracting plate and simultaneously moving the tubular bodies fixed to the extracting plate.
  • the extracting plates of the different lines of forming moulds can be driven by the same driving mechanism that enables all the plates to be driven simultaneously to eject, possibly simultaneously, all the base bodies and/or the caps formed in the apparatus .
  • a single extracting plate for all the apparatus 1, to which a plurality of tubular bodies is connected that are provided in a number corresponding to the number of the base bodies 101 and/or of the caps 100 formed in the apparatus 1, and thus to the forming cavities provided in the apparatus .
  • the first and the second forming moulds 5, 6 are further provided with, respectively, a first supporting member 32 and a second supporting member 33 housed inside the supporting structure 10.
  • the first supporting member 32 and the second supporting ⁇ g are identical to each other.
  • the first and the second supporting member 32, 33 are positioned, respectively, at least partially internally to the first tubular body 17 and to the second tubular body 18 and are concentric with the first tubular body 17 and the second tubular body 18.
  • the first and the second supporting member 32, 33 are shaped so as to form the first forming cavity 7 and the further first forming cavity 9 for forming the cap body 101 and the further cap body 101a.
  • the first and the second supporting member 32, 33 are provided with shaped portions arranged for forming the thread 105 of the cap 100 and of the further cap 100a.
  • first and the second supporting member 32, 33 are configured so that the cooling device 31 extends at least partially inside the first and the second supporting member 32, 33.
  • the first and the second supporting member 32, 33 are further fixed to a plate 34, by respective fixing ends 32a, 33a. • Possibly, the plate 34 can be connected to driving devices to be moved as disclosed better below.
  • Each pair of forming moulds 4 is further provided with a second extracting plate 41 housed inside the supporting structure 10 of the apparatus 1, and movable in the direction of the further arrow F2, between a rest configuration A shown in the Figure 4, various active positions, described better below, and comprising a first active configuration B shown in the Figure 5, and a second active configuration C shown in the Figure 6, and a further rest configuration E shown in Figures 7 and 8.
  • the second extracting plate 41 can be moved from the rest configuration A after the first mould portion 22 and the second mould portion 23, defining the portion of mould cavities 24, have been distanced.
  • the second extracting plate 41 is moved by a moving device, which is not shown, suitable for moving the second extracting plate 41 between the rest configuration A, the first active configuration B, the second active configuration C and the further rest configuration E, and vice versa.
  • the moving device comprises a preferably linear moving device, for example a pneumatic piston or, also, a worm screw.
  • a further extracting device 40 positioned inside the supporting structure 10 so as to be interposed between the first forming mould 5 and the second forming mould 6 of each pair of forming moulds 4 , in order to be able to interact with both the forming moulds 5, 6, of the same pair of forming moulds 4.
  • the apparatus 1 is provided with a plurality of rows of pairs of forming moulds 4, for each row of moulds there can be provided a single second extracting plate to which there is fixed a number of further extracting devices equal to the number of rows of pairs of forming moulds provided in the apparatus .
  • the second extracting plates of the different lines of forming moulds can be driven by the same moving mechanism that simultaneously enables all the plates to be driven for ejecting, possibly simultaneously, all the lids formed in the apparatus .
  • a single second extracting plate can further be provided for all the apparatus 1, to which a plurality of further extracting devices is connected in a number corresponding to the number of pairs of forming moulds 4 provided in the apparatus .
  • the further extracting device 40 comprises a bush 44, fixed to the second extracting plate 41, an extracting element 45 arranged for extracting the lids 102 from the corresponding mould cavity, and a supporting device 46 that is interposed between the bush 44 and the extracting element 45 and 5 enables the bush 44 and the extracting element 45 to be mutually connected.
  • the bush 44 comprises a base portion 47 fixed to the second extracting plate 41 and a body 48 that is internally hollow and shaped so as to define a housing 49.
  • the supporting device 46 comprises an internally hollow supporting body 55 inserted in a sliding manner inside the housing 49 and a fork element 56 comprising a pivot 59 that extends between two opposite walls of the fork element 56.
  • the fork element 56 has an external dimension Dl, measureds in a direction that is transverse to the direction of the further arrow F2, and a surface 57 positioned on the side of the first forming mould 5 and/or of the second forming mould 6.
  • the extracting element 45 comprises a first hammer extractor0 63 and a second hammer extractor 64.
  • the first hammer extractor 63 comprises a foot 65 provided with a hole for enabling the foot 65 to be inserted into the pivot 59, a body 67, and a head 68 positioned on the opposite side to the foot 65 and arranged for interacting5 with the lid 102 formed in the second cavity 8.
  • the foot 65 and the head 68 are shaped so as to protrude from the same part with respect to the body 67, giving the first hammer extractor 63 a "C" shape.
  • the second hammer extractor 64 comprises ao further foot 69 provided with a further hole to enable the further foot 69 to be inserted into the pivot 59, a further body 71 and a further head 72 positioned on the opposite side to the further foot 69 and arranged for interacting with the further lid 102a formed in the further second5 cavity 11.
  • the further foot 69 and the further head 72 protrude from the same side with respect to the further body 71, giving on the second hammer extractor 64 a "C" shape.
  • the first hammer extractor 63 and the second hammer extractor 64 can rotate around the pivot 59, as indicated by the rotation arrow F3 , and as disclosed better below.
  • the first hammer extractor 63 and the second hammero extractor 64 are positioned in the fork element 56 in a specular manner with respect to one another, i.e. so that the head 68 and the further head 72, and the foot 65 and the further foot 69 protrude from opposite sides to one another. In this manner, the head 68 of the first hammer extractor 63s faces the first forming mould 5, whilst the further head 72 of the second hammer extractor 64 faces the second forming mould 6.
  • the extracting element 45 has total overall dimensions D3 , measured as the distance between opposite0 ends of the foot 65 and of the further foot 69, that is greater than the external dimension Dl of the fork element 56.
  • the foot 65 and the further foot 69 are positioned in the fork element 56 so as to protrude from the external5 dimension Dl of the fork element 56 each by a portion "d".
  • the total overall dimensions D3 of the extracting element 45, in the further rest position A is equal to the sum of the portion "d” relating to the foot 65, of the external dimension Dl of the fork element 56, and ofo the portion "d” relating to the further foot 69.
  • the foot 65 and the further foot 69 are further positioned almost flush with the surface 57 of the fork element 56.
  • a pair of guiding surfaces 70 having a step profile, shaped so5 as to define a further housing 73 to enable and to guide the sliding of the further extracting device 40.
  • the further housing 73 comprises a seat 74 having a first internal dimension D2 almost corresponding to the total overall dimensions D3 of the extracting element 45, and a further seat 75 having a second internal dimension D4 almost corresponding to the external dimension Dl of the fork element 56, and a connecting surface 76 interposed between the seat 74 and the further seat 75.
  • the fork element 56 can be, therefore, received both inside the seat 74 and inside the further seat 75.
  • the extracting element 45 can be received inside the seat 74, but not inside the further seat 75.
  • the connecting surface 76 acts as an arresting surface for the extracting element 45, and in particular for the foot 65 and for the further foot 69 hinged on the fork element 56.
  • the further seat 75 is positioned in a zone of the further housing 73 facing the first and/or the second forming mould 5, 6 and comprises a closed bottom surface 77 that bounds the further seat 75 on the side of the first and/or of the second forming mould 5 , 6.
  • the seat 74 further has a longitudinal dimension L comprising a first longitudinal dimension Ll, measured as a distance between the surface 57 of the fork element 56 and the connecting surface 76 in the further rest position A and a second longitudinal dimension L3.
  • the first longitudinal dimension Ll corresponds to the extent of the movement that the fork element 56 can perform inside the seat 74 between the rest configuration A and the first active configuration B.
  • the further seat 75 has a further longitudinal dimension L2, considered in the direction of the further arrow F2, and measured as a distance between the connecting surface 76 and the bottom surface 77.
  • the further longitudinal dimension L2 is the same as the extent of the further movement that the fork element 56 can perform inside the further seat 75, as far as the bottom surface 77, between the first active configuration B and the second active configuration C.
  • the further longitudinal dimension L2 substantially corresponds to the overall longitudinal extent of the further seat 75.
  • the fork element 56 is positioned in a lowered position inside the further housing 73, so that the surface 57 thereof is spaced apart from the connecting surface 76 by a distance equal to the first longitudinal dimension Ll, and the extracting element 45 io extends almost completely inside the further housing 73.
  • the fork element 56 is made to slide in the further housing 73, and in particular, first inside the seat 74 and, subsequently, the further seat 75.
  • first active configuration B shown in Figure 5, in the direction of the further arrow F2 , is almost the same as the first longitudinal dimension Ll, i.e. equal to the distance between the surface 57 of the fork element 56 and the connecting surface 76 in the further rest position A.
  • the linear movement of the extracting element 45 from the rest configuration A to the first active configuration B comprises a first movement portion between the rest configuration A and a contact position, which is not shown, 5 and a second movement portion between the contact position and the first active configuration B.
  • the head 68 of the first hammer extractor 63 and the further head 72 of the second hammer extractor 64 are brought progressively closero respectively to the lid 102 formed in the second forming cavity 8, and to the further lid 102a formed in the further second forming cavity 11, until a contact position is reached in which the head 68 and the further head 72 are respectively in contact with the surface 114 of the lid 102s and with the further surface 114a of the further lid 102a.
  • each subsequent movement of the second extracting plate 41 causes an interaction between the head 68 and the further head 72 and, respectively, the surface 114 and the further surfaceo 114a.
  • the movement of the second extracting plate 41 in the second movement portion means that the head 68 and the further head 72 exert a thrust force respectively on the surface 114 and on the further surface 114a, causing rotation of the lid 1025 and of the further lid 102a respectively around the hinge 103 and the further hinge 103a, as indicated respectively by the rotation arrows F4 and F5.
  • the contact zone between the head 68 and the further head 72 and,o respectively, the surface 114 and the further surface 114a moves from the hinge 103 and from the further hinge 103a towards the grip portion 109 and the further grip portion 109a.
  • the5 lid 102 and the further lid 102a are positioned in an intermediate position Q with respect to the opening position Y, in which they were formed, and the closing position X.
  • the lid 102 and the further lid 102a are rotated by about 90°, with respect to the opening position Y and lie on a plane that is transverse to a plane on which lie respectively the base body 101 and the further base body 101a.
  • the foot 65 and the further foot 69 abut on the connecting surface 76. Subsequently, the second extracting plate 41 can be further driven, in the direction of the further arrow F2, to be moved from the first active configuration B to the second active configuration C, shown in Figure 6.
  • the further movement of the second extracting plate 41 from the first active configuration B to the second active configuration C, in the direction of the further arrow F2, is almost equal to the further longitudinal dimension L2, i.e. almost equal to the distance between the connecting surface 16 and the bottom surface 77 of the further seat 75.
  • the further movement of the second extracting plate 41 from the first active configuration B to the second active configuration C causes a corresponding further movement of the fork element 56 that is made to slide inside the further seat 75, and a corresponding rotation movement of the first hammer extractor 63 and of the second hammer extractor 64 of the extracting element 45, respectively in the direction of the arrow F4 and F5, as disclosed better below.
  • the further movement of the second extracting plate 41 causes a corresponding further linear movement of the fork element 56 and thus of the pivot 59 to which the first hammer extractor 63 and the second hammer extractor 64, that move in the further seat 75, are hinged.
  • the foot 65 and the further foot 69 are locked by the connecting surface 76 to perform any further movement in the direction of the further arrow F2.
  • the head 68 and the further head 72 push on suitable contact zones respectively of theo surface 114 and of the further surface 114a, causing a further rotation respectively of the lid 102 and of the further lid 102a respectively around the hinge 103 and the further hinge 103a.
  • the contact zone between the5 surface 114 and the further surface 114a and, respectively, the head 68 and the further head 72 moves further from the hinge 103 and from the further hinge 103a to the grip portion 109 and the further grip portion 109a.
  • theo lid 102 and the further lid 102a are coupled respectively with the base body 101 and with the further base body 101a, i.e.
  • the cap 100 and the further cap 100a are positioned in the closing position X.
  • the5 lid 102 and the further lid 102a are, further, rotated by about 90°, in the direction of the arrow F4 and F5 respectively, with respect to the intermediate position Q that the lid 102 and the further lid 102a had assumed in the first active configuration B.
  • This longitudinal movement has to be such as to ensure that, in the second active configuration C, the cap 100 and the further cap 100a are positioned in the closing position X.
  • the fork element 56 is partially positioned inside the further seat 75, so that the surface 57 of the fork element 56 is spaced apart from the bottom surface 77 of the further seat 75.
  • the fork element 56 is positioned inside the further seat 75 so that the surface 57 of the fork element 56 abuts on the bottom surface 77 of the further seat 75.
  • the second extracting plate 40 can still further be moved in the direction of the further arrow F2 to be taken to the further rest configuration E, shown in Figures 7 and 8.
  • This still further movement means that the first hammer extractor 63 and the second hammer extractor 64 disengage respectively from the lid 102 and from the further lid 102a, and are returned progressively inside the supporting structure 10.
  • the cap 100 and the further cap 100a are in the closing position X with the lid 102 and the further lid 102a coupled, respectively, to the base body 101 and to the further base body 101a, and the second forming cavity 8 and the further second forming cavity 11 are thus empty.
  • the first extracting device 15 for extracting the cap 100 and the further cap 100a, respectively from the first forming cavity 7 and from the further first forming cavity 9.
  • the ejecting position Z of the first extracting plate 14 is shown.
  • the first extracting plate 14 is taken, by driving the corresponding driving device, to the ejecting position Z for ejecting the cap 100 and the further cap 100a respectively from the first forming cavity 7 and from the further first forming cavity 9.
  • the first mould portion 22 and the second mould portion 23 are positioned in the detachment position J, so as to free the undercut portions of the cap 100 and of the further cap 100a and thus to be able to move the first extracting plate 14 from the rest position W to the ejecting position Z.
  • the cap 100 and the further cap 100a have been ejected respectively from the first forming cavity 7 and from the further first forming cavity 9.
  • theo plate 34 can be moved and thus also the first supporting element 32 and the second supporting element 33 connected to the plate 34, in the direction of the arrow F2, opposite the movement of the first extracting plate 14.
  • the plate 34 can be moved to move away respectively thes first supporting element 32 and the second supporting element 33 from the cap body 101 and from the further cap body 101a.
  • the cap body 101 and the further cap body 101a are disengaged respectively from the first supportingo element 32 and from the second supporting element 33, both through the effect of the movement of the first tubular body 17 and of the second tubular body 18, and through the effect of the further movement of the first supporting element 32 and of the second supporting element 33. s
  • This enables the ejection step from the apparatus 1 of the cap 100 and of the further cap 100a to be further facilitated.
  • first mould portion 22 and the second mould portion 23 of the first half mould 21 are in the forming position K, i.e. they are moved near to one another to form the portions of mould cavities 24, and the5 second half moulds cooperate with the first half mould 21 to form a forming cavity shaped so as to form objects even having a complex shape .
  • the second half moulds are moved away from the first half moulds 21, and the formed caps 100, 100a are left in respective portions of mould cavities 24 for a time that s is sufficient to ensure suitable cooling of the caps 100, 100a, Figure 3, 4.
  • first mould portion 22 and the second mould portion 23 are moved away from one another in the direction of the arrow Fl, i.e. taken to the detachmento position J, defining a gap between the first mould portion 22 and the second mould portion 23, freeing the undercut portions of the caps 100, and enabling the extracting device and the further extracting device to be driven and the extracting device and the further extracting device tos access the caps 100.
  • an extracting step in which the further extracting device 40 is moved so as to cause a linear movement of the extracting element 45 that in turn generates a rotation of the lid 102 and of the further lid0 102a from the opening position Y to the intermediate position Q, Figure 5, as disclosed previously.
  • the further extracting device 40 is subjected to a further movement that causes a rotational movement of the extracting element 45 that in turn generates a further5 rotation of the lid 102 and of the further lid 102a from the intermediate position Q to the closing position X, Figure 6.
  • the further extracting device 40 is subjected to a still further movement suitable for returning the further extracting device 40 inside the supporting structureo 10, preventing interaction of the further extracting device 40 with the cap 100 and the further cap 100a, Figure 7.
  • an ejection step in which the extracting device 15 is driven for ejecting the cap 100 and the further cap 100a respectively from the first forming5 cavity 7 and from the further first forming cavity 9, Figure 8. In this step there can be further provided moving the plate
  • the cap 100 and the further cap 100a after being ejected from the respective forming cavities, are collected by collecting devices and are possibly conveyed to further zones of the apparatus, for example to further treatment zones, or packaging zones, o
  • the extracting device 15 is then returned to the rest position in which it does not interact with the base bodies
  • first supporting element 32 and the second supporting element 33 are returned to the forming position,s in which they cooperate with the further moulding parts to form respectively the first forming cavity 7 and the further first forming cavity 9.
  • the apparatus 1 is ready for restarting a new cycle of forming and ejecting caps. o
  • the first mould portion 22 and the second mould portion 23 are again enclosed, forming position K, so as to form the portion of mould cavities 24.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Prostheses (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

La présente invention concerne un appareil comportant un corps de moule (5, 6, 21, 22, 23) à partir duquel des objets formés (100, 100a) comprenant un corps de base (101, 101a) et un appendice (102, 102a) relié audit corps de base (101, 101a) doivent être extraits, un dispositif d'extraction (40, 41, 45, 44, 46, 48, 49, 55, 56, 57, 59, 63, 64) permettant d'extraire ledit appendice (102, 102a) depuis ledit corps de moule (5, 6, 21, 22, 23) et de relier ledit appendice (102, 102a) audit corps de base (101, 101a). Ledit dispositif d'extraction comporte un moyen de poussée (63, 64) qui est mobile selon un trajet linéaire (P2) pour éloigner ledit appendice (102, 102a) du corps de moule (5, 6, 21, 22, 23). L'invention se caractérise en ce que ledit moyen de poussée (63, 64) est également mobile selon un trajet curviligne (F4, F5) pour entraîner ledit appendice (102, 102a) sur ledit corps de base (101, 101a).
EP08750955A 2007-05-17 2008-05-15 Appareil Withdrawn EP2164691A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO20070165 ITMO20070165A1 (it) 2007-05-17 2007-05-17 Apparato
PCT/IB2008/001214 WO2008142518A2 (fr) 2007-05-17 2008-05-15 Appareil

Publications (1)

Publication Number Publication Date
EP2164691A2 true EP2164691A2 (fr) 2010-03-24

Family

ID=39745438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08750955A Withdrawn EP2164691A2 (fr) 2007-05-17 2008-05-15 Appareil

Country Status (4)

Country Link
EP (1) EP2164691A2 (fr)
CN (1) CN101711198A (fr)
IT (1) ITMO20070165A1 (fr)
WO (1) WO2008142518A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016124749A1 (fr) * 2015-02-06 2016-08-11 Schöttli AG Moule pour capuchon de fermeture à sommet basculant

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4351630A (en) * 1980-12-31 1982-09-28 Global Precision Inc. Pivoting hinge exercising mechanism
JPH0611508B2 (ja) * 1985-05-08 1994-02-16 株式会社吉野工業所 合成樹脂製キヤツプの離型方法と金型装置
ITBO20020509A1 (it) * 2002-08-02 2004-02-03 Bva Srl Stampa per la produzione di tappi provvisti di coperchio articolato.
CA2505962C (fr) * 2005-05-02 2012-02-21 Stackteck Systems Limited Dispositif de fermeture de moule

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008142518A3 *

Also Published As

Publication number Publication date
WO2008142518A2 (fr) 2008-11-27
WO2008142518A3 (fr) 2009-01-29
ITMO20070165A1 (it) 2008-11-18
CN101711198A (zh) 2010-05-19

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