EP1958744A1 - Machine de coulage sous pression - Google Patents

Machine de coulage sous pression Download PDF

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Publication number
EP1958744A1
EP1958744A1 EP07425085A EP07425085A EP1958744A1 EP 1958744 A1 EP1958744 A1 EP 1958744A1 EP 07425085 A EP07425085 A EP 07425085A EP 07425085 A EP07425085 A EP 07425085A EP 1958744 A1 EP1958744 A1 EP 1958744A1
Authority
EP
European Patent Office
Prior art keywords
mould
machine according
slide
support means
crosspiece
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Withdrawn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
EP07425085A
Other languages
German (de)
English (en)
Inventor
Pietro Vianello
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.)
Garoll Srl
Original Assignee
Garoll Srl
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 Garoll Srl filed Critical Garoll Srl
Priority to EP07425085A priority Critical patent/EP1958744A1/fr
Publication of EP1958744A1 publication Critical patent/EP1958744A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/08—Moulds provided with means for tilting or inverting

Definitions

  • the present invention relates to pressure die casting machines, in particular for manufacturing ceramic products, such as sanitary articles.
  • pressure die casting machines comprise at least two half moulds which, placed in contact, define a cavity wherein a casting material is injected, for example a ceramic mixture, called "barbotine" by the men skilled in the art.
  • a casting material for example a ceramic mixture, called "barbotine" by the men skilled in the art.
  • Each half mould is fixed to a relative mould holder, in turn connected to an element supporting the machine.
  • At least one of the support elements of the mould holders is movable at least in the approach/removal direction relative to the other mould holder so as to close the mould for forming the article and open the mould for the demoulding and drawing thereof.
  • the ceramic articles that have internal cavities are obtained thanks to the drying of the ceramic mixture in contact with the mould cavity walls, whereas the mixture that does not contact said walls, and that therefore does not solidify, must be quickly made to outflow from the mould so as to obtain the cavity, before it solidifies. It is therefore preferable, especially in the case of articles that exhibit a prevailing extension in a plane, to arrange the mould, and thus the mould holders, so that such plane is vertically oriented, to convey the liquid mixture as quickly as possible to a point of the mould wherefrom it is made to outflow outside through a special duct.
  • the sanitary articles are drawn from the open half mould still in the "green" state, that is, in a state wherein they are only slightly hardened and exhibit poor mechanical resistance as they are barely capable of self-supporting.
  • any stresses exceeding their resistance may irreparably damage the article just moulded, which must therefore be discarded.
  • this applies in the case of sanitary articles having a thin structure at least in one dimension.
  • EP 1403022 A1 discloses a pressure die casting machine with single mould wherein a mould holder is fixed in vertical position to a support capable of shifting horizontally, whereas the other mould holder is fixed to a support crosspiece suitable for being placed in rotation about an axis substantially horizontal and perpendicular to the shifting direction of the other mould holder.
  • the article forming therefore takes place with the mould in substantially horizontal position, whereas the drawing of the article from a half mould can be carried out after having rotated the relevant mould holder in horizontal position.
  • This machine does not allow in any way to carry out the casting in horizontal position, since it is only one of the two mould holders that after the casting and emptying rotates to carry out the demoulding and drawing of the part.
  • the other mould holder on the other hand, always remains fixed in substantially vertical position.
  • the object of the present invention is to propose a single pressure die casting machine having a real and complete usage flexibility, that is, which should meet all of the aforementioned requirements, while maintaining a particularly simple and compact structure.
  • the object of the present invention is to provide a single machine wherein each of the operating steps of the pressure die casting process, that is, the injection of the casting material, the emptying of the mould, the demoulding and drawing of the pieces, can be carried out in the most suitable position, for example based on the type of mould or article to be manufactured.
  • figure 1 shows a schematic perspective view of a pressure die casting machine according to the invention, in a configuration of vertical mould filling or emptying;
  • figure 2 shows a side view of the machine of figure 1 ;
  • figure 3 shows the machine in a horizontal demoulding configuration
  • figure 4 shows a side view of the machine of figure 3 ;
  • figure 5 shows a perspective view of the machine in a horizontal mould filling configuration
  • figure 6 shows a front view of the machine in a vertical demoulding configuration
  • figure 7 shows the machine in the position of figure 1 , shown with some construction details
  • figure 8 shows a longitudinal section view of the machine of figure 7 ;
  • figure 9 shows the machine of figure 7 , in an intermediate position
  • figure 10 shows a front perspective view of the crosspiece and relevant moving slides of the mould holders
  • figure 11 shows the crosspiece as seen from the back, that is, from the side of connection to the machine support upright;
  • figure 12 shows a cutaway view of the crosspiece at the level of the slide moving means
  • figure 13 shows an enlarged view of the means for locking a mould holder to the slide
  • figure 14 shows a section view of the slide and of the mould holder at the level of said locking means.
  • reference numeral 10 globally indicates a pressure die casting machine according to the invention, in particular for manufacturing ceramic products, such as sanitary articles.
  • the machine is shown for higher clarity in its essential elements, leaving aside some construction details shown in the following figures.
  • Machine 10 comprises a base 12 from which a support upright 14 extends in substantially vertical direction.
  • upright 14 In the proximity of the upper end thereof, upright 14 carries a crosspiece 16.
  • the latter is capable of rotating about a substantially horizontal axis X.
  • crosspiece 16 is connected to upright 14 through a fifth wheel 18 ( figures 8 , 11 ).
  • Fifth wheel 18 is actuable in rotation by a motor 181 associated to upright 14.
  • crosspiece 16 is capable of rotating by at least 90° between a substantially horizontal position and a substantially vertical position.
  • Crosspiece 16 in turn supports a pair of slides 20, arranged in parallel and facing each other.
  • the slides overhang from crosspiece 16, substantially in a direction parallel to the axis of rotation X of the crosspiece.
  • Each slide 20 is fixed to a mould holder 22.
  • Each mould holder 22 serves as support for at least one respective half mould (not shown) which, placed in contact with the other half mould, as a whole forms a mould for the ware.
  • At least one slide 20 can shift along crosspiece 16 along an axis Y substantially orthogonal to the axis of rotation X of the crosspiece, so that the two half moulds are mobile between a relative removal position, suitable for the shakeout and drawing of the cast piece, and a relative contact position, wherein the machine is closed for casting and emptying the mould.
  • both slides 20 are mobile for reciprocally approaching and separating along axis Y.
  • slides 20 are connected to a common movement system 24 which allows the concurrent shifting of the slides.
  • said movement system 24 comprises a worm screw 241 actuable in rotation by a motor 242.
  • a half 241' of said worm screw 241 exhibits a thread in one direction; the other half 241" exhibits a thread with an opposite direction.
  • a slide 20 is associated to a half of screw 241; the other slide to the other half of the screw. Therefore, actuating the worm screw in one direction causes the shifting of slides 20 in directions opposite to each other.
  • Slides 20 slide on roller recirculation runner system 243.
  • each mould holder 22 is fixed to the respective slide 20 in adjustable manner.
  • means 26 for locking the mould holders 22 to the respective slides 20 suitable for allowing a locking of the mould holder 22 in an angular position about axis Y particularly useful for facilitating the mould emptying (see for example Figure 2 ).
  • said locking means comprise a plurality of holes 261 obtained in each slide along at least two opposite circumference arcs.
  • Each mould holder 22 can therefore be fixed to the slide by fixing screws that screw in at least two holes 261 diametrically opposite and selectable on the basis of the angular position or inclination to be imparted to mould holders 22.
  • each mould holder 22 is further supported by the respective slide 20 through an axial pin 262.
  • the latter comprises a head 263 that engages the mould holder 22 in the direction of coupling with slide 20, and a distal end 264 that inserts in a through axial opening 265 obtained in slide 20.
  • Said distal end 264 protrudes from the external side of slide 20 and is engaged by a sector locking member 266.
  • sector locking member 266 also constitutes a safety device that constrains mould holder 22 to the respective slide 20, in any inclination they are, even if the locking screws have not been screwed yet.
  • Figures 7 to 12 show the casting machine enriched with some construction details thereof.
  • said figures show containment and conveying members of the ducts for feeding/discharging the casting material and of the auxiliary circuits, such as for compressed air, water, vacuum, etc.
  • auxiliary circuits such as for compressed air, water, vacuum, etc.
  • such ducts rise through the support upright 14, pass in crosspiece 16 through an axial opening 183 of fifth wheel 18, and come out at the top from said crosspiece 16 through openings 162.
  • the slave ducts of a half mould are conveyed to the respective mould holder 22 through a respective chain 30 mounted on crosspiece 16 and a respective raceway 32 that connects the end of such chain to slide 20.
  • mould holders 22 may be of the type suitable for receiving equipment 34 for quick mould change according to the disclosure of a previous European patent application no. 05425722.5 .
  • the pressure die casting machine according to the invention has such versatility as to be usable in different ways according, for example, to the article to be cast.
  • crosspiece 16 in a substantially horizontal position so as to position the mould in vertical position ( figures 1 and 2 ).
  • Vertical mould means that the two half moulds close to form the mould along a substantially vertical contact plane. As explained before, this facilitates the filling and emptying of the mould for this type of articles.
  • the mould filling in horizontal position ( figure 5 ), that is, with the crosspiece in vertical position.
  • the contact plane between the two half moulds is a horizontal plane.
  • the mould emptying can bet carried out, according to the needs, keeping the mould in horizontal position (or with a slight inclination) or rotating it by 90° in vertical position ( figure 1 ).
  • the mould when the mould holders are open and in horizontal position ( figure 3 ), the mould can be carried in the proximity of the lower mould holder, for example by a lift truck, and easily mounted on such mould holder.
  • base 12 of the machine can be advantageously suitable for being buried in the floor so as to facilitate the approach of the lift truck to the lower mould holder as much as possible.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
EP07425085A 2007-02-15 2007-02-15 Machine de coulage sous pression Withdrawn EP1958744A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07425085A EP1958744A1 (fr) 2007-02-15 2007-02-15 Machine de coulage sous pression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07425085A EP1958744A1 (fr) 2007-02-15 2007-02-15 Machine de coulage sous pression

Publications (1)

Publication Number Publication Date
EP1958744A1 true EP1958744A1 (fr) 2008-08-20

Family

ID=38323884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07425085A Withdrawn EP1958744A1 (fr) 2007-02-15 2007-02-15 Machine de coulage sous pression

Country Status (1)

Country Link
EP (1) EP1958744A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014118499A1 (fr) * 2013-01-29 2014-08-07 Pcl Ceramics Limited Appareil et procédé de coulée sous pression
GB2543532A (en) * 2015-10-20 2017-04-26 Pcl Ceram Ltd Portable casting apparatus
WO2019035795A3 (fr) * 2017-04-14 2019-04-11 Unimak Makina Sanayii Ve Ticaret A.S. Machine et procédé de coulage de produit vitrifié
WO2021086278A1 (fr) * 2019-11-01 2021-05-06 U.K.Cast Serami̇k Kalip Döküm Teknoloji̇si̇ Araştirma Geli̇şti̇rme Maki̇ne İmalat Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ Unité de rotation verticale
WO2023048678A1 (fr) * 2021-09-22 2023-03-30 Unimak Makina Sanayi Ve Ticaret Anonim Sirketi Machine de coulée pour moulage d'évier

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB388267A (en) 1932-05-31 1933-02-23 Christian Bossau Pivoted clamping device for moulds for casting ceramic articles
GB1231146A (fr) 1969-01-22 1971-05-12
US3799729A (en) * 1972-04-03 1974-03-26 Metzeler Ag Rotational casting or molding machine
US3856452A (en) 1973-11-05 1974-12-24 J Amado Apparatus for centrifugally casting hollow spheres

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB388267A (en) 1932-05-31 1933-02-23 Christian Bossau Pivoted clamping device for moulds for casting ceramic articles
GB1231146A (fr) 1969-01-22 1971-05-12
US3799729A (en) * 1972-04-03 1974-03-26 Metzeler Ag Rotational casting or molding machine
US3856452A (en) 1973-11-05 1974-12-24 J Amado Apparatus for centrifugally casting hollow spheres

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014118499A1 (fr) * 2013-01-29 2014-08-07 Pcl Ceramics Limited Appareil et procédé de coulée sous pression
GB2543532A (en) * 2015-10-20 2017-04-26 Pcl Ceram Ltd Portable casting apparatus
WO2017068323A1 (fr) * 2015-10-20 2017-04-27 Pcl Ceramics Limited Appareil de coulée portable
WO2019035795A3 (fr) * 2017-04-14 2019-04-11 Unimak Makina Sanayii Ve Ticaret A.S. Machine et procédé de coulage de produit vitrifié
WO2021086278A1 (fr) * 2019-11-01 2021-05-06 U.K.Cast Serami̇k Kalip Döküm Teknoloji̇si̇ Araştirma Geli̇şti̇rme Maki̇ne İmalat Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ Unité de rotation verticale
WO2023048678A1 (fr) * 2021-09-22 2023-03-30 Unimak Makina Sanayi Ve Ticaret Anonim Sirketi Machine de coulée pour moulage d'évier

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