EP3800023A1 - Herstellungsanlage für sanitärartikel - Google Patents

Herstellungsanlage für sanitärartikel Download PDF

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Publication number
EP3800023A1
EP3800023A1 EP20196731.2A EP20196731A EP3800023A1 EP 3800023 A1 EP3800023 A1 EP 3800023A1 EP 20196731 A EP20196731 A EP 20196731A EP 3800023 A1 EP3800023 A1 EP 3800023A1
Authority
EP
European Patent Office
Prior art keywords
containment
equipment
fact
forming
forming portions
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Withdrawn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
EP20196731.2A
Other languages
English (en)
French (fr)
Inventor
Fabio TAROZZI
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.)
Siti B&T Group SpA
Original Assignee
Siti B&T Group SpA
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 Siti B&T Group SpA filed Critical Siti B&T Group SpA
Publication of EP3800023A1 publication Critical patent/EP3800023A1/de
Withdrawn legal-status Critical Current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
    • B28B1/265—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 pressure being applied on the slip in the filled mould or on the moulded article in the mould, e.g. pneumatically, by compressing slip in a closed mould
    • B28B1/266—Means for counteracting the pressure being applied on the slip or on the moulded article in the mould, e.g. means for clamping the moulds parts together in a frame-like structure
    • 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
    • B28B7/0002—Auxiliary parts or elements of the mould
    • B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
    • B28B7/002—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps using magnets

Definitions

  • the present invention relates to a piece of equipment for the production of sanitary ware.
  • the present invention relates to a piece of equipment for the production of sanitary ware, such as e.g. washbasins, bidets, WCs, etc., by means of high pressure casting.
  • High pressure casting consists in the introduction, inside a special mold, of slip, a fluid ceramic mixture which, once shaped, is made to dry and then fired to obtain the desired manufactured product.
  • the molds are usually formed by a plurality of forming portions, brought close to each other to form a forming cavity of the ceramic product.
  • high pressure casting is more efficient but requires greater resistance of the molds to the stresses given by the pressing force.
  • the forming portions have to remain correctly in place during the casting operation to avoid aesthetic and functional defects in the finished manufactured product.
  • a machine is known from patent EP 2366517 for the production of sanitary ware in which the forming portions are associated with the supporting means which, after the forming portions themselves have been moved close to each other to define the forming cavity, are introduced inside a tubular clamping member adapted to contain them during the casting phase.
  • the machine comprises inflatable elements, associated with the clamping member, which are filled during the casting phase to exert pressure on the supporting means, and consequently on the forming portions, to keep them in position.
  • the pressure exerted by the inflatable elements is not precisely controllable and does not ensure an optimal contrast to the pressure exerted by the casting of the slip.
  • the portions of the mold may be subject to misalignment and displacement that can jeopardize the proper success of the product.
  • the inflatable elements which are positioned at the moving mechanical parts, are subject to rapid wear and tear with a consequent increase in maintenance costs.
  • the main aim of the present invention is to devise a piece of equipment for the production of sanitary ware that allows effectively counteracting the pressure exerted by the slip during the casting phase.
  • one object of the present invention is to devise a piece of equipment that allows exerting an adequate counteracting force on each portion of the mold, during the casting phase, regardless of their mutual position.
  • the outer surfaces of the forming portions may not be perfectly aligned with each other and therefore may have different inclinations.
  • Another object of the present invention is to keep the forming portions in the correct mutual position during the casting phase.
  • Another object of the present invention is to devise a piece of equipment for the production of sanitary ware that allows reducing the costs related to the maintenance operations compared to the machines of known type.
  • Another object of the present invention is to devise a piece of equipment for the production of sanitary ware that allows overcoming the above mentioned drawbacks of the prior art within a simple, rational, easy, effective to use and low cost solution.
  • reference numeral 1 globally indicates a piece of equipment for the production of sanitary ware.
  • the equipment 1 for the production of sanitary ware comprises a load-bearing structure 2, at least one forming mold 3 associated with the load-bearing structure 2 and comprising a plurality of forming portions 3a,3b,3c movable in mutual approach/spacing apart between at least one open configuration, wherein they are spaced apart from each other, and one closed configuration, wherein they approach each other so as to define at least one forming cavity 4 of a sanitary ware item.
  • the forming mold 3 may comprise a number of forming portions 3a,3b,3c variable from two to six depending on the type of sanitary ware to be produced.
  • the forming mold 3 comprises four distinct and separate forming portions 3a,3b,3c, of which a lower portion 3a associated with a resting base 5 associated with the load-bearing structure 2, two lateral portions 3b and an upper portion 3c.
  • the equipment 1 comprises gripping means 6 of the removable type of at least some of the forming portions 3a,3b,3c, which are movable relative to the load-bearing structure 2 to displace the forming portions themselves in mutual approach/spacing apart.
  • gripping means 6 therefore, allow locking and releasing the forming portions 3a,3b,3c, so that they can be quickly and easily positioned and replaced.
  • At least one of the forming portions 3a,3b,3c comprises at least one supporting element 7 of the ferromagnetic type and the gripping means 6 comprises at least one gripping element 6b,6c of the magnetic type adapted to operate in conjunction with the supporting element 7.
  • each of the lateral portions 3b and the upper portion 3c are provided with a corresponding supporting element 7 and the gripping means 6 comprise a lateral gripping element 6b for each of the lateral portions 3b and an upper gripping element 6c for the upper portion 3c.
  • the gripping means 6 also comprise control means, not shown in detail in the figures, which can be operated to activate/deactivate the magnetic field of the gripping element 6b,6c.
  • control means which can be operated to activate/deactivate the magnetic field of the gripping element 6b,6c.
  • the lateral gripping elements 6b are associated movable in a sliding manner with the load-bearing structure 2 along a first substantially horizontal direction 26.
  • the displacement of the lateral gripping elements 6b along the first direction 26 is therefore adapted to allow the lateral portions 3b to be mutually approached/spaced apart.
  • the equipment 1 comprises first displacement means 27 of the lateral gripping elements 6b along the first direction 26.
  • the first displacement means 27 may comprise e.g. at least one first actuator 28 operating on at least one of the lateral gripping elements 6b.
  • the first displacement means 27 may comprise a first actuator 28 for each lateral gripping element 6b or, alternatively, they may comprise a single first actuator 28 and connecting means 29 shifting along the first direction 26 of the lateral gripping elements 6b as shown in the embodiment represented in the figures.
  • the connecting means 29 comprise at least one toothed belt kinematically connected to the lateral gripping elements 6b to allow them to be displaced in the mutual approach/spacing apart direction along the first direction 26.
  • the corresponding lateral gripping element 6b moves along the first direction 26, thus also dragging the other lateral gripping element 6b in its displacement by means of the toothed belt 29 with which both the lateral gripping elements 6b are associated.
  • the upper gripping element 6c is also movable sliding relative to the load-bearing structure 2 along a second, substantially vertical, direction 30.
  • the upper gripping element 6c is therefore movable approaching/spacing apart from the resting base 5.
  • the equipment 1 comprises second displacement means 31 of the upper gripping element 6c along the second direction 30.
  • the second displacement means 31 are e.g. of the type of a second actuator 32.
  • the equipment 1 also comprises positioning means 33 of at least one of the gripping elements 6b,6c between an operating position, wherein it is arranged at an assembly area 25 of the forming mold 3, and a maintenance position, wherein it is spaced apart from the assembly area 25 and is accessible from the outside.
  • the gripping elements 6b,6c are movable between the closed configuration and the open configuration, so that their mutual orientation is the final one, that is the one that allows the definition of the forming cavity 4 in the closed configuration as a result of their mutual approach.
  • the gripping elements 6b,6c are moved away from the assembly area 25 and, in particular, are displaced towards the outside of the load-bearing structure 2 in order to be easily accessible by an operator.
  • the positioning means 33 comprise rotation means 34 for rotating at least one of the lateral gripping elements 6b around a relevant axis 35.
  • the lateral gripping elements 6b are therefore able to rotate around a relevant axis 35 to displace from the operating position to the maintenance position and vice versa.
  • Figure 8 shows one of the lateral gripping elements 6b in the maintenance position. As can be easily seen, in this position the corresponding lateral portion 3b can be easily inspected by an operator.
  • the positioning means 33 also comprise a shifting assembly 36 of the upper gripping element 6c along a third direction 37 transverse to said second direction 30.
  • the equipment 1 then, comprises at least one containment device 8 of the forming portions 3a,3b,3c in the closed configuration, associated with the load-bearing structure 2, where the forming mold 3 and the containment device 8 are mutually movable between a release configuration, wherein the forming mold 3 and the containment device 8 are spaced apart from each other, and a containment configuration wherein the forming mold 3 is inserted inside the containment device 8.
  • the containment device 8 is adapted to contain the forming mold 3 during the casting phase so as to counteract the thrust exerted by the pressure inside the forming cavity 4 and which tends to move the corresponding forming portions 3a,3b,3c away from each other.
  • movement means 9 are therefore interposed which are adapted to allow their corresponding displacement between the release configuration and the containment configuration.
  • the movement means 9 comprise a pair of straight guides 10, e.g. consisting of elongated crossbars that extend horizontally, associated with the load-bearing structure 2 and a pair of sliding elements 11, each provided with a plurality of rolling elements 12, associated with the containment device 8 and which engage with a corresponding straight guide 10.
  • the sliding elements 11 are therefore able to move relative to the load-bearing structure 2 along the direction defined by the longitudinal extension of the straight guides 10.
  • the gripping elements 6b, 6c are contained inside the containment device 8 in the containment configuration, wherein the gripping elements 6b, 6c are therefore kept engaged with the corresponding forming portion 3b, 3c.
  • the gripping elements 6b, 6c therefore remain associated with the corresponding forming portion 3b, 3c during the entire casting phase.
  • the gripping elements 6b, 6c are deactivated, so that the corresponding forming portions 3b, 3c are released, substantially at the same time as the forming mold 3 is inserted into the containment device 8 to achieve the containment configuration.
  • the gripping elements 6b, 6c are disengaged from the corresponding forming portions 3b, 3c in the containment configuration, and the forming portions 3b, 3c interact directly with the pressing bodies 15.
  • the containment device 8 comprises at least one containment frame 13, containment means 14 associated with the containment frame 13 and comprising in turn a plurality of pressing bodies 15 adapted to contact the forming portions 3a,3b,3c.
  • each of the pressing bodies 15 defines at least one relevant stop surface 15a adapted to contact a corresponding outer surface 16 of the forming portions 3a,3b,3c.
  • the stop surfaces 15a of some pressing bodies 15 may also contact the outer surfaces 16 of the same forming portion 3a,3b,3c.
  • each of the stop surfaces 15a is adapted to interact with the outer surface 16 of a corresponding forming portion 3a,3b,3c.
  • the outer surface 16 of the forming portions 3b,3c is defined by the corresponding supporting element 7.
  • the pressing bodies 15 are positioned on the containment frame 13 so as to enclose the forming mold 3.
  • the pressing bodies 15 are positioned in such a way that their stop surfaces 15a are oriented substantially at right angle relative to the stop surfaces 15a of the adjacent pressing bodies 15.
  • the containment means 14 then comprise at least one tensioning element 17 associated by wrapping with the pressing bodies 15 and the containment device 8 is provided with traction means 18 operable to move the tensioning element 17 so as to approach the pressing bodies 15 to the forming portions 3a,3b,3c.
  • the tensioning element 17 is of the type of an inextensible rope or cable that, when brought into traction by the traction means 18, exerts such a force on the pressing bodies 15 so as to cause their displacement when approaching the forming portions 3a,3b,3c.
  • each of the pressing bodies 15 comprises at least one guide element 19 of the tensioning element 17, the latter being associated sliding with the guide element itself.
  • the containment means 14 comprise a plurality of tensioning elements 17 each of which is associated with a respective guide element 19.
  • the traction means 18 comprise at least one traction element 18a associated movable with the containment frame 13 shifting along a direction of sliding, identified in the figures with the double arrow 20, approaching/spacing apart from the forming mold 3 with the latter in the containment configuration.
  • the traction element 18a displaces the ends of the tensioning element 17 so as to bring the pressing bodies 15 closer to the forming mold 3.
  • the traction element 18a is associated with one of the pressing bodies 15.
  • the traction means 18 comprise an actuating element 18b, e.g. of the type of a fluid-operated cylinder, associated with the traction element 18a to move it along the direction of sliding 20.
  • an actuating element 18b e.g. of the type of a fluid-operated cylinder
  • the containment device 8 comprises oscillation means 21 placed between the containment frame 13 and the containment means 14, where such oscillation means 21 are adapted to move in rotation at least one of the pressing bodies 15 relative to the containment frame 13 around at least a first axis X.
  • the oscillation means 21 are positioned between the containment frame 13 and each of the pressing bodies 15, with the exception of the pressing body 15 associated with the traction element 18a.
  • the oscillation means 21 are adapted to allow the pressing bodies 15 and, in particular, the corresponding stop surfaces 15a, to follow the inclination of the outer surface 16 of the corresponding forming portion 3a,3b,3c.
  • the forming mold 3 is composed of a plurality of forming portions 3a,3b,3c separate from each other, it follows that, in the closed configuration, the corresponding outer surfaces 16 can be misaligned with each other or have different inclinations.
  • the oscillation means 21 thus allow the stop surfaces 15a of the pressing bodies 15 to follow the inclination of the corresponding outer surface 16 with which they operate in conjunction, so that they can optimally counteract the pressure that is exerted on the forming portions 3a,3b,3c during the casting phase.
  • the first axis X is arranged substantially parallel to the stop surface 15a of the corresponding pressing body 15.
  • the oscillation means 21 comprise at least one pair of oscillation elements 22, adapted to allow the rotation around the first axis X, positioned on opposite sides with respect to a first median plane Xa incident to the relevant stop surface 15a and containing the first axis itself.
  • the oscillation means 21 are adapted to allow the rotation of the corresponding pressing body 15 around at least one second axis Y transverse to the first axis X, wherein both the first axis X and the second axis Y are substantially parallel to the corresponding stop surface 15a.
  • the oscillation means 21 comprise at least a first group 23 of oscillation elements 22 and at least a second group 24 of oscillation elements 22 positioned on opposite sides relative to a second median plane Ya transverse to the first median plane Xa and containing the second axis Y, wherein each of the oscillation groups 23 and 24 comprises at least one of these pairs of oscillation elements 22 positioned on opposite sides relative to the first median plane Xa.
  • the first group 23 and the second group 24 of oscillation elements 22 allow the rotation of the corresponding pressing body 15 around the second axis Y, while the oscillation elements 22 of each of these groups 23 and 24 positioned on opposite sides of the first median plane Xa allow the rotation around the first axis X.
  • the oscillation elements 22 are made of elastically yielding material, so as to allow the rotation of the corresponding pressing body 15 around the corresponding axis and to allow its return to a neutral position the instant when the force that caused the rotation thereof is no longer present.
  • Alternative embodiments to those described and represented here and of a type known to the technician of the sector, such as, e.g., a spherical joint or the like cannot however be ruled out.
  • the forming portions 3a,3b,3c are positioned on the load-bearing structure 2, they are moved from the open configuration to the closed configuration in order to define the forming cavity for the manufacture of a corresponding sanitary ware item.
  • the forming portions 3a,3b,3c can be displaced in the closed configuration using the gripping means 6, which, as described above, are movable relative to the load-bearing structure 2.
  • the containment device 8 is made to slide relative to the forming mold 3, using the movement means 9, in order to bring it from the release configuration to the containment configuration.
  • the traction means 18 are activated to tension the tensioning element 17 in order to bring the pressing bodies 15 closer to the forming mold 3.
  • the stop surfaces 15a contact the respective outer surfaces 16 of the forming portions 3a,3b,3c.
  • the stop surface 15a of the pressing body 15 associated with the traction element 18a serves as a reference surface.
  • the stop surfaces 15a of the other pressing bodies 15, as a result of their progressive approach to the respective outer surfaces 16 take, by means of the oscillation means 21, the same inclination as the outer surfaces themselves.
  • the oscillation means 21 allow the respective stop surfaces 15a to rotate around the first and the second axis X and Y in such a way as to align with the outer surfaces 16 with which they come into contact.
  • the oscillation elements 22 may then be compressed or extended depending on their position relative to the median plane Xa,Ya containing the axis of rotation X,Y.
  • the traction means 18 interrupt their action on the tensioning element 17, so that the pressing bodies 15 are moved away from the forming mold 3.
  • the traction element 18a is moved along the direction of sliding 20 in the approaching direction to the forming mold 3, so that the tensioning element 17 is loosened.
  • the containment device 8 can be moved again to the release configuration, so that the forming portions 3a,3b,3c can be moved to the open configuration to allow the extraction of the sanitary ware item.
  • the stop surfaces of the pressing bodies are able to modify the inclination thereof so that they are coplanar to the outer surfaces of the forming portions.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Seasonings (AREA)
EP20196731.2A 2019-09-17 2020-09-17 Herstellungsanlage für sanitärartikel Withdrawn EP3800023A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102019000016460A IT201900016460A1 (it) 2019-09-17 2019-09-17 Attrezzatura per la produzione di articoli sanitari

Publications (1)

Publication Number Publication Date
EP3800023A1 true EP3800023A1 (de) 2021-04-07

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ID=69468974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20196731.2A Withdrawn EP3800023A1 (de) 2019-09-17 2020-09-17 Herstellungsanlage für sanitärartikel

Country Status (2)

Country Link
EP (1) EP3800023A1 (de)
IT (1) IT201900016460A1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2366517A1 (de) 2010-03-18 2011-09-21 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Maschine zur Herstellung keramischer Produkte.
WO2019025999A1 (en) * 2017-08-01 2019-02-07 Siti-B&T Group S.P.A. FORMING GROUP FOR THE PRODUCTION OF SANITARY ARTICLES

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2366517A1 (de) 2010-03-18 2011-09-21 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Maschine zur Herstellung keramischer Produkte.
WO2019025999A1 (en) * 2017-08-01 2019-02-07 Siti-B&T Group S.P.A. FORMING GROUP FOR THE PRODUCTION OF SANITARY ARTICLES

Also Published As

Publication number Publication date
IT201900016460A1 (it) 2021-03-17

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