EP3271125B1 - An end panel group of a press for ceramic products and the like - Google Patents

An end panel group of a press for ceramic products and the like Download PDF

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Publication number
EP3271125B1
EP3271125B1 EP16723155.4A EP16723155A EP3271125B1 EP 3271125 B1 EP3271125 B1 EP 3271125B1 EP 16723155 A EP16723155 A EP 16723155A EP 3271125 B1 EP3271125 B1 EP 3271125B1
Authority
EP
European Patent Office
Prior art keywords
end panel
panel group
terminal element
support
group according
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.)
Active
Application number
EP16723155.4A
Other languages
German (de)
English (en)
French (fr)
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EP3271125A1 (en
Inventor
Antonio D' AULERIO
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
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Siti B&T Group SpA
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Publication of EP3271125A1 publication Critical patent/EP3271125A1/en
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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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
    • B28B7/366—Replaceable lining plates for press mould

Definitions

  • the present invention refers to an end panel group of a press for ceramic products and the like.
  • the present invention refers to an end panel group of an industrial press for ceramic products such as tiles, plates or the like.
  • some of the aforesaid presses are specifically designed and equipped for making large-size ceramic products, even up to several square meter surface area.
  • a press for large-size products has a structure with a portal shape, provided with at least two lateral uprights connected by transverse portions; between the aforesaid uprights, a free opening is delimited which defines the inlet mouth for the material to be formed, such opening accessible from two opposite sides of the press, an inlet side and an outlet side.
  • the press is normally associated with means for the supply of the material to be pressed, for example in the form of a conveyor belt movable through the free opening of the structure; the press also comprises power members adapted to exert the pressing force on the material to be formed, which generally is in powder form.
  • presses have been recently designed which comprise perimeter containment members, for example provided with respective end panels or the like, which suitably delimit the pressing cavity, in a manner so as to precisely define the shape and edges of the product produced: thus, further processing in order to confer the final shape and size to the product itself is thus not necessary.
  • the aforesaid perimeter containment members are installed on respective actuation means between respective inactive positions and respective operating positions in which they delimit the pressing cavity.
  • Document DE 2915161 discloses a ceramic mold including an intermediate plate with a plurality of openings, each defining a molding cavity having the shape of the tiles to be produced. The inner or working surfaces of these openings are lined by four strips.
  • the support plate includes a sawtooth shoulder which, in turn, houses the respective strip.
  • the strip is held in position by an upper rod, fixed to the support plate by a series of screws.
  • the rod has lower slanted portions corresponding to respective upper slanted portions of the strip, and of the upper edge of the support plate.
  • Document EP 1595665 discloses a device for manufacturing green bricks including a plurality of mold containers, wherein each mold container defines a number of upright walls and is provided with a bottom movable between the walls.
  • Each mold container includes support elements for respective lateral upright walls, which comprise respective strips which delimit the molding cavity.
  • the lateral upright walls are connected to the respective support elements by means of side plates and screws.
  • the technical task of the present invention is to improve the state of the art.
  • one object of the present invention is to implement an end panel group of a press for ceramic products and the like which allows overcoming the above mentioned drawbacks.
  • Another object of the present invention is to provide an end panel group of a press for ceramic products and the like which allows speeding up and facilitating the maintenance and/or size change operations to be conducted on the press.
  • Another object of the present invention is to provide an end panel group of a press for ceramic products and the like which allows considerably reducing the production stop times of the press due to operations of maintenance/replacement of parts of the end panel group itself.
  • a further object is to implement an end panel group of a press for ceramic products and the like which allows reducing the number of workers involved in the operations of maintenance/replacement of parts of the end panel group itself.
  • the end panel group comprises at least one support associable with fixed or movable parts of the press and at least one terminal element associated with the support and adapted to delimit at least one side, or at least one portion of a side, of a pressing cavity provided in the press.
  • the end panel group comprises means for the removable connection of the terminal element to the support.
  • the removable connection means are of clamping type.
  • an end panel group of a press for ceramic products and the like according to the present invention is generally indicated with reference number 1.
  • the end panel group 1 is installable on a press for the pressing of a powder material, in order to make ceramic products such as tiles, plates or the like.
  • the end panel group 1 can be installed on a press for large-size ceramic products, such as for example tiles or plates having surface area that even reaches several square meters.
  • the ceramic material to be pressed for obtaining the aforesaid products can be selected between the ceramic powders in general, without any particular limitation; the aforesaid material can be, if necessary, mixed with further substances as a function of specific embodiment needs.
  • the end panel group 1 comprises at least one support 2.
  • the support 2 is associable with fixed or movable parts of the press.
  • the end panel group 1 also comprises at least one terminal element 3, associated with the support 2.
  • the terminal element 3 is adapted to delimit at least one side, or at least one portion of a side, of a pressing cavity provided in the press, for making ceramic products.
  • the pressing cavity of the press can have quadrilateral shape - typically a square or a rectangle - and the end panel group 1 according to the invention can be installed in order to delimit one of the sides of the quadrilateral or a portion of one of such sides.
  • the pressing cavity could have any other shape suitable for the application.
  • the support 2 of the end panel group 1 is thus connected with fixed or movable parts of the press according to the modes most suitable for the application, and particularly such that the terminal element 3 is arranged along one of the sides, or along a portion of one of the sides, of the pressing cavity.
  • the end panel group 1 comprises removable connection means 4 of the terminal element 3 to the support 2.
  • the terminal element 3 can be easily and quickly removed from the support 2 that connects it to the press, for any need: for example, the terminal element 3 can be removed from the support 2 for periodic or special maintenance reasons, or for size change reasons, i.e. variation of the size and/or shape of the product to produce.
  • the support 2 of the end panel group 1 according to the present embodiment of the invention is illustrated in detail in figure 4 .
  • the support 2 comprises, at one of the sides thereof, at least one extension 5 intended to be in contact with the terminal element 3.
  • the support 2 comprises, at one of the sides thereof, a plurality of extensions 5 side-by-side each other in lengthwise sense.
  • the extensions 5, if more than two, are intended to be in contact with the terminal element 3.
  • the extensions 5 are associated with the support 2 by means of respective screws 5a and alignment keys 5b, see for example figure 6 .
  • Each of the extensions 5 respectively defines a first upper zone 6 (or supper surface portion) and a second lower zone 7 (or lower surface portion) on which, as is better described hereinbelow, the removable connection means 4 act.
  • each of the extensions 5 comprises a respective front surface, intended for coupling with the terminal element 3.
  • the removable connection means 4 are of clamping type.
  • the removable connection means 4 comprise means for locking 8, 9, 18 the terminal element 3 with respect to the support 2.
  • the locking means 8, 9, 18 comprise at least one first member 8 and at least one second member 9 opposite each other.
  • the first member 8 and the second member 9 can be fastened on respective first coupling seats 10 and second coupling seats 11 opposite each other, provided in the support 2 and in the terminal element 3.
  • the locking means 8, 9, 18 comprise a plurality of first members 8 and second members 9 which can be fastened on a respective plurality of first coupling seats 10 and second coupling seats 11, that are distributed, aligned with each other, substantially over the entire length of the support 2 and of the terminal element 3.
  • the number of such pairs of first, second members 8, 9 and of first, second coupling seats 10, 11 can be obviously any, in relation to the specific application needs, e.g. in relation to the length and shape of the terminal element 3, to the specific zone in which the end panel group 1 is fixed to the press, and still other needs.
  • the support 2 and the terminal element 3 are associable with each other at at least one connection plane P, indicated for example in figure 9 .
  • first coupling seats 10 comprise respective first proximal portions 10a and first distal portions 10b, provided on opposite sides with respect to such connection plane P.
  • first proximal portions 10a are provided in the first zones 6 of the extensions 5 of the support 2, while the first distal portions 10b are provided in the terminal element 3.
  • first proximal portions 10a of the first coupling seats 10 are constituted by recesses made in the surface of the first zones 6 of the extensions 5 (as shown in figure 4 ).
  • second coupling seats 11 comprise respective second proximal portions 11a and second distal portions 11b provided on opposite sides with respect to the connection plane P.
  • the second proximal portions 11a are provided in the second zones 7 of the extensions 5 of the support 2, while the second distal portions 11b are provided in the terminal element 3.
  • the second proximal portions 11a of the second coupling seats 11 are constituted by recesses made in the surface of the second zones 7 of the extensions 5.
  • the terminal element 3 is illustrated in detail in figure 5 .
  • the terminal element 3 comprises at least one bar 12 associable with the support 2 by means of the aforesaid removable connection means 4.
  • the terminal element 3 also comprises at least one strip of wear-resistant material 13.
  • the strip of wear-resistant material 13 is fixed to the bar 12; in one embodiment of the present invention, the strip of wear-resistant material 13 is removably fixed to the bar 12.
  • fixing screws 14 are provided - visible for example in figure 6 - arranged with respective axes orthogonal to the connection plane P.
  • the strip of wear-resistant material 13 is, as stated, intended to laterally and sealingly close the pressing cavity of the press, and hence this is continuously and directly situated in contact with the material to be pressed: consequently, its surface characteristics must be naturally suitable for resisting the stresses - mechanical, thermal, etc. - that are developed inside the pressing cavity itself.
  • the end panel group 1 comprises means for centering 15, 17 the terminal element 3 with respect to the support 2.
  • centering means 15, 17 comprise at least one longitudinal rib 15 provided in the terminal element 3.
  • centering means 15, 17 comprise a longitudinal recess 17.
  • the longitudinal rib 15 is adapted to be engaged in the aforesaid longitudinal recess 17.
  • the longitudinal rib 15 is provided in the bar 12.
  • the holes 16 are provided for the insertion of the fixing screws 14 of the strip of wear-resistant material 13.
  • the longitudinal recess 17 is provided, correspondingly, in the extensions 5 of the support 2.
  • the longitudinal recess 17 is provided along the front surface of each of the extensions 5, and is comprised between the first upper zone 6 and the second lower zone 7.
  • each of the extensions 5 has a longitudinal length extension such to comprise - in the specific illustrated embodiment - three pairs of first, second proximal portions 10a, 11a, equidistant from each other in longitudinal direction.
  • the extensions 5 are mutually separated in longitudinal direction by suitable equidistant interruptions.
  • the longitudinal rib 15 of the terminal element 3 is intended to be engaged when the latter is connected to the support 2: thus, an effective reference and centering for the assembly of the parts is obtained.
  • the locking means 8, 9, 18 are of self-aligning type.
  • the locking means 8, 9, 18 are therefore capable of being adapted to possible misalignments between the first coupling seats 10 and the second coupling seats 11, and between the latter and the centering means 15, 17.
  • first proximal portions 10a and the first distal portions 10b which constitute the first coupling seats 10, as well as the second proximal portions 11a and the second distal portions 11b which constitute the second coupling seats 11 are in fact tilted, with respect to the connection plane P, respective preset angles ⁇ less than 90° (see for example figure 9 ).
  • first member 8 and the second member 9 respectively define a first concave portion 8a and a second concave portion 9a.
  • the first concave portion 8a and the second concave portion 9a have respective shapes and geometries complementary to those of the first coupling seats 10 second coupling seats 11.
  • first concave portion 8a and the second concave portion 9a each define two tilted surfaces arranged according to incident planes: such planes form an angle between them that is double the preset angle ⁇ .
  • respective zones are defined - corresponding to the first and proximal and distal second portions 10a, 11a, 10b, 11b - substantially dovetail shaped, with vertices directed according to opposite senses, i.e. in use one is directed upward and the other downward.
  • the first and the second member 8, 9 are respectively engaged, so as to make a connection, or a shape coupling, between the parts that is simple and quick, while simultaneously safe and effective.
  • connection plane P (see for example figure 9 ) between the extensions 5 of the support 2 and the terminal element 3 passes through the vertices of the aforesaid substantially dovetail shaped zones.
  • the locking means 8, 9, 18 also comprise screw clamping means 18 for each pair of first, second members 8, 9 on the respective first, second coupling seats 10, 11.
  • such screw clamping means 18 comprise, for each pair of first and second members 8, 9, a bolt comprising a screw 19 having axis substantially lying on the connection plane P between the terminal element 3 and the support 2.
  • the screw clamping means 18 also comprise, for each screw 19, a respective through hole 20 in which the screw 19 itself is engaged.
  • each through hole 20 comprises two respective half-holes 20a, 20b.
  • the two half-holes 20a, 20b, for each pair of first and second members 8,9, are respectively provided in the terminal element 3 and in the extensions 5 of the support 2 at the first, second proximal portions 10a, 11a and first, second distal portions 10b, 11b, see in particular the figures 4 and 5 .
  • first members 8 and second members 9 respective first, second embedded seats 21, 22 are provided respectively for the heads 19a of the screws 19 and for the respective nuts 19b; see in particular the enlargement of figure 10 .
  • the locking means 8, 9, 18 of self-aligning type are designed such that they can autonomously and automatically adapt to possible misalignments (due for example to errors of positioning and/or errors or imprecisions in the mechanical processing, and/or the like) which possibly affect the coupling between the support 2 and the terminal element 3.
  • first member 8 and the second member 9 are designed in a manner so as to provide for a mechanical clearance between the same and the screw clamping means 18.
  • each screw 19 is consequently free, after suitable clamping, to arrange according to any axis, also different from that of the respective through hole 20, so as to reach a stable locking configuration of the various parts, in which it is mainly, if not exclusively and correctly, tensile-stressed.
  • the first and second members 8, 9 are able to effectively connect together the terminal element 3 and the support 2, even in the presence of possible misalignments between the first and second, proximal and distal, portions 10a, 11a, 10b, 11b, and between these and the coupling surfaces between the longitudinal rib 15 and the longitudinal recess 17, which actually constitute the primary coupling zone between the support 2 and the terminal element 3.
  • the screw clamping means 18 have a certain possibility to transversely move and automatically align with respect to the first and to the second members 8, 9, and hence also with respect to the support 2 and to the terminal element 3, in a manner so as to ensure an effective grasping action on the first and second, proximal and distal, portions 10a, 11a, 10b, 11b.
  • the grasping action of the screw clamping means 18 hence also occurs in the presence of possible misalignments between these and the coupling surfaces provided in the longitudinal rib 15 and in the longitudinal recess 17.
  • the locking means 8, 9, 18 could have shape different from that described above.
  • the bar 12 of the terminal element 3 comprises a plurality of bushes 23, fixed with respective screws 23a, whose lateral surfaces partially project with respect to the connection plane P.
  • Such bushes 23 also partially project with respect to the junction plane between the bar 12 and the strip of wear-resistant material 13.
  • the bushes 23 facilitate the correct alignment, in longitudinal sense, of the strip of wear-resistant material 13 with respect to the bar 12.
  • the end panel group 1 comprises actuation means 24 associated with the support 2.
  • the actuation means 24 are adapted to selectively move the terminal element 3 between an inactive position and an operating position in which it is suitable for delimiting the pressing cavity of the press, as described above.
  • the actuation means 24 allow selectively translating the terminal element 3, together with the support 2, with a motion trajectory having a component orthogonal to the connection plane P.
  • the actuation means 24 can be of any type suitable for the application.
  • the actuation means 24 comprise a plurality of first tilted profiles 25 provided in the rear face of the support 2, i.e., during use, the face opposite that where the extensions 5 are provided.
  • the actuation means 24 also comprise a plurality of second tilted profiles 26, associated with an element 27 movable in longitudinal sense.
  • the movable element 27 is housed inside a box-like structure 28, which also encloses the support 2, as illustrated for example in figures 7, 8 and 9 .
  • the second tilted profiles 26 are coupled to the first tilted profiles 25 in the manner illustrated in figure 6 .
  • a longitudinal translation of the movable element 27 causes a movement of the support 2 - which is instead longitudinally constrained - according to a direction orthogonal to the connection plane P: in this manner, the actuation of the movable element 27 selectively causes the movement of the support 2, and hence of the terminal element 3, from the inactive position to the operating position and vice versa.
  • the actuation of the movable element 27 can for example occur with oil-pressure, pneumatic, electric means or means of any other type suitable for this specific use.
  • the actuation means 24 could be absent: in other words, the terminal element 3 of the end panel group 1 could be situated permanently mounted in the relative operating position of sealing closure of the pressing cavity.
  • the terminal element 3 could be moved in the operating position by means of manual actuation means.
  • the terminal element 3 of the end panel group 1 is brought into the respective operating position in the manner described above, if the actuation means 24 are actually present.
  • the respective terminal elements 3 are situated in mutual contact, and hence realize a seal along the perimeter of the pressing cavity.
  • the realized shape of the pressing cavity substantially corresponds with the final shape of the ceramic product, such as a tile, a plate or the like, that one intends to make.
  • the pressure element of the press the laterally provided end panel groups 1, if more than one of these are present, and a suitable lower support provided in the press - opposite the pressure element, e.g. a conveyor belt for the material to be pressed - form a mold with movable walls for making products such as tiles, plates or the like.
  • the pressing cavity thus delimited, being sealed, effectively prevents the leak of powder material; in such a manner, optimal pressing conditions are achieved, along with regular and repeatable shapes of the products.
  • the pressed product thus obtained does not require further mechanical processing adapted to eliminate, for example, scraps or parts of the perimeter portion of the obtained tile or plate.
  • the reassembly of the same terminal element 3, or the assembly of another terminal element 3 with different features and/or different sizes, is easily obtained by repeating the above-described operations in reverse manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Connection Of Plates (AREA)
EP16723155.4A 2015-03-20 2016-03-21 An end panel group of a press for ceramic products and the like Active EP3271125B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB20150563 2015-03-20
PCT/IB2016/051583 WO2016151474A1 (en) 2015-03-20 2016-03-21 An end panel group of a press for ceramic products and the like

Publications (2)

Publication Number Publication Date
EP3271125A1 EP3271125A1 (en) 2018-01-24
EP3271125B1 true EP3271125B1 (en) 2023-11-08

Family

ID=53284449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16723155.4A Active EP3271125B1 (en) 2015-03-20 2016-03-21 An end panel group of a press for ceramic products and the like

Country Status (4)

Country Link
EP (1) EP3271125B1 (zh)
CN (1) CN107567373B (zh)
ES (1) ES2971161T3 (zh)
WO (1) WO2016151474A1 (zh)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447205A (en) * 1966-11-29 1969-06-03 Wehr Corp Press mold box assembly
US4035128A (en) * 1974-09-30 1977-07-12 Frede Hilmar Drostholm Brick press and associated equipment for making bricks
DE2915161A1 (de) * 1979-04-12 1980-10-30 Ta Ro Di Tagliati Rodolfo Sass Keramikform
DE4108342C2 (de) * 1991-03-14 1994-01-13 Kema Keramikmaschbau Gmbh Vakuumpresse, insbesondere für keramische Massen
NL1026193C2 (nl) * 2004-05-13 2005-11-15 Beheermij De Boer Nijmegen Bv Inrichting voor het vervaardigen van vormelingen.
IT1402937B1 (it) * 2010-10-28 2013-09-27 System Spa Struttura per presse in particolare per la formatura di prodotti ceramici.

Also Published As

Publication number Publication date
CN107567373B (zh) 2020-03-24
ES2971161T3 (es) 2024-06-03
WO2016151474A1 (en) 2016-09-29
CN107567373A (zh) 2018-01-09
EP3271125A1 (en) 2018-01-24

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