EP0916461A1 - Dispositif de pressage - Google Patents

Dispositif de pressage Download PDF

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Publication number
EP0916461A1
EP0916461A1 EP98121804A EP98121804A EP0916461A1 EP 0916461 A1 EP0916461 A1 EP 0916461A1 EP 98121804 A EP98121804 A EP 98121804A EP 98121804 A EP98121804 A EP 98121804A EP 0916461 A1 EP0916461 A1 EP 0916461A1
Authority
EP
European Patent Office
Prior art keywords
press according
pressing
press
pressing means
pressed
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.)
Granted
Application number
EP98121804A
Other languages
German (de)
English (en)
Other versions
EP0916461B1 (fr
Inventor
Sante Montecchi
Maurizio Chiodi
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.)
System SpA
Original Assignee
SAMA SRL
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Filing date
Publication date
Application filed by SAMA SRL filed Critical SAMA SRL
Publication of EP0916461A1 publication Critical patent/EP0916461A1/fr
Application granted granted Critical
Publication of EP0916461B1 publication Critical patent/EP0916461B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
    • B28B5/04—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping in moulds moved in succession past one or more shaping stations
    • 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/04—Discharging the shaped articles
    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/048—Laminated frame structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses

Definitions

  • the invention relates to a pressing system, in particular for shaping powdered ceramic materials of flat shape and, in particular but not solely, of large format.
  • Known presses consist of a welded or assembled structure to which there is coupled a vertically mobile beam bearing a top mould portion, said mould having a respective lower portion coupled to the bench body of the press.
  • Presses of assembled structure consist of a pair of walls connected by a pair of tables assembled in such a way as to define a pressing compartment in which a mobile mould punch is capable of closing onto a die-box containing the powders to be shaped.
  • Known ceramic presses can generate a pressing force of only up to 4,000 or 5,000 tonnes and are therefore unable to press ceramic slabs of surface area greater than 1 sqm.
  • a press with a frame body including vertical walls interconnected by connecting means and provided with respective openings that together define a pressing compartment of adequate size to accommodate upper pressing means and lower pressing means, characterised in that said compartment is capable to accommodate, in an upper portion thereof, an upper block steadily coupled to upper parts of said openings and to which said upper pressing means is fixed, and a lower portion thereof, a lower block steadily coupled to lower parts of said openings and to which said lower pressing means is coupled.
  • This aspect of the invention allows for creation of a press with a modular structure, in other words a press with a longitudinal dimension of the compartment that receives the pressing means having a length that can be freely predetermined according to the surface area of the material to be pressed.
  • the upper block and the lower block serve to distribute the load uniformly on the walls during pressing.
  • each wall is therefore preferable for each wall to be relatively close to the previous and/or subsequent wall.
  • the walls can be a distance apart that is roughly equal to their thickness.
  • a press comprising a frame body to which there is coupled pressing means provided with at least one mobile part actuated by a suitable hydraulic jack actuating means, characterised in that said hydraulic jack actuating means has a pressing surface that extends in such a way as to cover a substantial portion of the surface to be pressed.
  • This aspect of the invention permits optimal pressing even of ceramic products of large surface area, for example slabs of surface area greater than 1 sqm.
  • a press comprising a frame body to which there is coupled upper pressing means which interacts operatively with lower pressing means in a pressing position in order to press a loose material between them in such a way as to form a pressed product, characterised in that said lower pressing means is coupled to actuating means capable of moving the lower pressing means from said pressing position to an auxiliary position in which the lower pressing means can be discharged of pressed product and loaded with further loose material to be pressed.
  • This aspect of the invention permits optimal loading of ceramic powders in the die-box of a mould for ceramic tiles or for large-format ceramic slabs.
  • a press 1 for ceramic slabs or large-format ceramic tiles has a frame body including walls 2, which are interconnected by way of two pairs of tie-rods 4 situated in respective holes in walls 2 below and above an opening 6 in each wall 2.
  • Each wall 2 rests on a base frame 8 relative to which it is positioned by way of a conventional alignment device 10.
  • the set of holes 6 in walls 2 forms a compartment that accommodates the pressing means 12 comprising upper pressing means 14 and lower pressing means 16.
  • the walls 2 all have the same nominal thickness S and are positioned at a conveniently small distance D apart, in particular equal to the nominal thickness S. This way the set of walls 2 is loaded uniformly when it has to withstand pressing loads.
  • the upper pressing means 14 includes an upper block 18 which is fixed to walls 2 on the top edge of openings 6, and is interconnected with a punch body 20 by way of vertical actuating means 22, including jacks 60 with rods 62 engaged in punch body 20 and arranged at the corners of upper block 18.
  • interposed guide columns 30 which slide in holes 32 ( Figure 3) on upper block 18 and are capable of ensuring that the punch body 20 moves downwards and upwards in a vertical plane.
  • the lower pressing means 16 includes a lower block 24 which is fixed to walls 2 on the lower edge of openings 6 and at the top has a pair of horizontal slide guides 26, coupled to respective lifting means 27.
  • a die-box body 28 is slidingly engaged on said sliding guides and is capable of receiving the punch body 20, in particular a lower active surface 44 thereof, in an upper cavity 29 ( Figure 3) on said die-box body 28.
  • the lifting means 27 is able to move the die-box body 28 upwards when, at the end of a pressing stage, said die-box body must be moved to a remote position relative to punch 20 in order to allow pressed product to be removed and further powders for pressing to be introduced into cavity 29; this aspect will be described in greater detail below.
  • the set of walls 2 of the frame body of press 1 form a "sandwich" type structure in which the walls 2 are maintained in pre-established positions relative to each other by spacers 32 interposed between each wall 2 and the wall 2 immediately preceding or following it.
  • a "sandwich" type press structure as defined above can also be fitted with conventional moulds, in particular with moulds that do not have parts that move transversally relative to the direction of movement of the punch.
  • spacers 32 are arranged in an external coaxial fashion on tie-rods 4, which securely tighten walls 2 by way of ring nuts 34 which engage with the ends of each tie-rod 4.
  • the upper block 18 is positioned on the top part of openings 6 by way of upper horizontal pins 35 and is fixed to walls 2 by way of upper fixing screws 36 with interposed anti-friction laminas 38.
  • the punch body 20 serves as the lining of a pressing hydraulic jack, the piston of which is the piston body 40 fixed to walls 2 in the manner described above.
  • the die-box body 28 includes an external frame body 46, which can be raised and lowered by way of further vertical actuating means 50, consisting of hydraulic jacks, solidly fixed to a base body 48 which extends upwards and is surrounded by an external frame body 46 which can slide vertically on the upper portion of the base body in such a way that, when the frame body 46 is completely raised, cavity 29 is formed between the die body and an active upper surface 52 of the base body, whereas when the frame body 46 is fully lowered, cavity 29 disappears and a product that has been formed inside it can be removed.
  • further vertical actuating means 50 consisting of hydraulic jacks
  • the lower block 24 is positioned on and fixed to walls 2 by way of screws 54 and horizontal pins 56 in a similar manner to the upper block 18.
  • the die-box body 28 in particular the lower part of the base body 48, rests on the lower block 24 and can slide relative to it on the slideways 26; the die-box body 28 can be centred in a pressing position below punch 20 by way of centring means 58 consisting of lower conical projections of the base body 48 which can engage with corresponding seats in the lower block 24.
  • the piston body 40 has a substantially rectangular shape with radiused corners, in such a way as to extend substantially over the entire surface of product P to be pressed, as defined by the cavity 29 when the die-box body 28 is in the pressing position.
  • a sheet 64 of anti-friction material is interposed between the piston body 40 and the upper block 18. Furthermore, alignment bushings 31 are interposed between the guide columns 30 and the holes 32 on the upper block 18 in which said guide columns slide.
  • Figure 6 shows a version of the upper pressing means which is similar to the version described in Figures 4 and 5 but in which, instead of a single piston body 40, there is a pair of piston bodies 40a arranged in such a way as to occupy a considerable part of the surface in plan view of product P to be pressed.
  • the piston bodies 40a are received in respective recesses 42a in punch body 20; during pressing, oil is sent into each of the recesses 42a at the same pressure and flow rate, in order to ensure that the active face 44 of punch body 20 exerts a uniform pressure on the powders to be pressed.
  • the "sandwich" structure of the press can also be equipped with a single conventional piston of circular cross-section.
  • closed-loop chain transfer means 72 wound on wheels free to rotate 76, which define a path with a neutral branch passing underneath the base of the press 1.
  • the wheels free to rotate 76 are coupled to geared motors 78 in such a way that the die-box body 28 can be moved along direction X from the pressing position to the waiting position and vice versa, making wheels 80, mounted on the bottom of the die-box body 28, run along the slideways 26 and the sliding tracks 68.
  • Figure 9 shows the dashed outline of auxiliary means 81 which acts on the die-box body 28 as explained below, when said die-box body is in the waiting position.
  • auxiliary stations 66 and 66a located on opposite sides relative to press 1, consisting of analogous parts to those making up auxiliary station 66 and therefore designated with the same reference numbers.
  • Figure 11 shows the dashed outline of auxiliary means 81 which acts on die-box body 28 as explained below, when it is in the waiting position relative to auxiliary station 66a.
  • the auxiliary means 81 includes transversal guide means 82, positioned transversally relative to direction X and on which a suction-cup pick-up means 84 is slidingly engaged. Said suction-cup pick-up means moves vertically on a pair of columns 86 by way of transfer means 88 and is capable of picking up pressed product P from die-box body 28, then raising said pressed product P from said die-box body and transferring it to a conveyor line 90 equipped with a motor-driven roller conveyor.
  • the frame 46 is once again raised in such a way as to form cavity 29, as shown in Figure 13, and hopper means 92 containing powders to be pressed is moved in such a way that a lower discharge outlet 94 controlled by shutter means 96 can introduce the powders to be pressed into cavity 29.
  • the hopper means 92 is moved to a rest position where it receives further powder from a feeder belt 98.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Press Drives And Press Lines (AREA)
EP98121804A 1997-11-17 1998-11-17 Dispositif de pressage Expired - Lifetime EP0916461B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1997MO000207A IT1304947B1 (it) 1997-11-17 1997-11-17 Pressa per la formatura di piastrelle o lastre, ceramiche,particolarmente di rilevanti dimensioni
ITMO970207 1997-11-17

Publications (2)

Publication Number Publication Date
EP0916461A1 true EP0916461A1 (fr) 1999-05-19
EP0916461B1 EP0916461B1 (fr) 2003-08-06

Family

ID=11386460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121804A Expired - Lifetime EP0916461B1 (fr) 1997-11-17 1998-11-17 Dispositif de pressage

Country Status (4)

Country Link
EP (1) EP0916461B1 (fr)
DE (1) DE69816942T2 (fr)
ES (1) ES2202719T3 (fr)
IT (1) IT1304947B1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003039846A1 (fr) * 2001-11-06 2003-05-15 System S.P.A. Structure pour presses, destinee notamment au formage de produits ceramiques
EP1327513A2 (fr) * 2002-01-14 2003-07-16 WELKO INDUSTRIALE S.p.A. Presse pour le moulage de produits en matériaux céramiques
EP2141006A1 (fr) * 2008-07-04 2010-01-06 Presservice Ljungby AB Module de cadre de presse
CN101691069B (zh) * 2009-10-11 2011-08-03 济南巨能液压机电工程有限公司 大台面双缸双框架板框式液压机
CN104385207A (zh) * 2014-07-23 2015-03-04 江西新余国泰特种化工有限责任公司 绸垫转装机
US11192275B2 (en) 2015-05-15 2021-12-07 Usnr, Llc Modular press

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012216603A1 (de) * 2012-09-18 2014-04-10 Siemens Aktiengesellschaft Verfahren zur Herstellung eines Sonotrodensystems, Pressvorrichtung sowie Sonotrodensystem

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR345819A (fr) * 1904-07-12 1904-12-17 Carl Huber Mode de construction des cadres des presses hydrauliques
GB301779A (en) * 1927-06-21 1928-12-13 Frank Humphris Improvements in plate-frames for presses and other machines
FR1065559A (fr) * 1952-09-15 1954-05-26 Procédé de fabrication de briques semi-perforées et machine pour la mise en oeuvre de ce procédé
US3086271A (en) * 1959-04-07 1963-04-23 Longinotti Enrico Machine for moulding tiles, slabs and the like or other objects
FR2152058A5 (fr) * 1971-09-02 1973-04-20 Walchhutter Ulrico
US3969061A (en) * 1972-02-11 1976-07-13 Pennsylvania Engineering Corporation Concrete press with mold clamping means
FR2310869A1 (fr) * 1975-05-13 1976-12-10 Bettonica Luigi Perfectionnements aux presses hydrauliques pour la fabrication de carreaux, assiettes et tasses en matiere ceramique, et autres objets similaires
DE2657704A1 (de) * 1976-01-13 1977-07-14 Bettonica Luigi Hydraulische presse
DE8716854U1 (de) * 1987-12-22 1988-02-11 Laeis GmbH, 5500 Trier Presse zur Herstellung von Formkörpern, insbesondere Preßlingen aus keramischem Werkstoff
US5038669A (en) * 1989-09-12 1991-08-13 Fugaku Koki Co., Ltd. RAM piston with internal reservoir and check valve
US5040967A (en) * 1989-10-05 1991-08-20 Fugaku Koki Co., Ltd. Means for vertically moving a ram in a compression molding machine
EP0523286A1 (fr) * 1991-07-15 1993-01-20 Emilceramica S.P.A. Installation pour le pressage de carreaux de céramique en général, de carreaux pressés émaillés en particulier
DE19534419A1 (de) * 1994-09-19 1996-03-21 Sacmi Presse für Keramikfliesen

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR345819A (fr) * 1904-07-12 1904-12-17 Carl Huber Mode de construction des cadres des presses hydrauliques
GB301779A (en) * 1927-06-21 1928-12-13 Frank Humphris Improvements in plate-frames for presses and other machines
FR1065559A (fr) * 1952-09-15 1954-05-26 Procédé de fabrication de briques semi-perforées et machine pour la mise en oeuvre de ce procédé
US3086271A (en) * 1959-04-07 1963-04-23 Longinotti Enrico Machine for moulding tiles, slabs and the like or other objects
FR2152058A5 (fr) * 1971-09-02 1973-04-20 Walchhutter Ulrico
US3969061A (en) * 1972-02-11 1976-07-13 Pennsylvania Engineering Corporation Concrete press with mold clamping means
FR2310869A1 (fr) * 1975-05-13 1976-12-10 Bettonica Luigi Perfectionnements aux presses hydrauliques pour la fabrication de carreaux, assiettes et tasses en matiere ceramique, et autres objets similaires
DE2657704A1 (de) * 1976-01-13 1977-07-14 Bettonica Luigi Hydraulische presse
DE8716854U1 (de) * 1987-12-22 1988-02-11 Laeis GmbH, 5500 Trier Presse zur Herstellung von Formkörpern, insbesondere Preßlingen aus keramischem Werkstoff
US5038669A (en) * 1989-09-12 1991-08-13 Fugaku Koki Co., Ltd. RAM piston with internal reservoir and check valve
US5040967A (en) * 1989-10-05 1991-08-20 Fugaku Koki Co., Ltd. Means for vertically moving a ram in a compression molding machine
EP0523286A1 (fr) * 1991-07-15 1993-01-20 Emilceramica S.P.A. Installation pour le pressage de carreaux de céramique en général, de carreaux pressés émaillés en particulier
DE19534419A1 (de) * 1994-09-19 1996-03-21 Sacmi Presse für Keramikfliesen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003039846A1 (fr) * 2001-11-06 2003-05-15 System S.P.A. Structure pour presses, destinee notamment au formage de produits ceramiques
US7160092B2 (en) 2001-11-06 2007-01-09 System S.P.A. Structure for presses, inparticular for forming ceramic products
EP1327513A2 (fr) * 2002-01-14 2003-07-16 WELKO INDUSTRIALE S.p.A. Presse pour le moulage de produits en matériaux céramiques
EP1327513A3 (fr) * 2002-01-14 2005-05-25 WELKO INDUSTRIALE S.p.A. Presse pour le moulage de produits en matériaux céramiques
EP2141006A1 (fr) * 2008-07-04 2010-01-06 Presservice Ljungby AB Module de cadre de presse
CN101691069B (zh) * 2009-10-11 2011-08-03 济南巨能液压机电工程有限公司 大台面双缸双框架板框式液压机
CN104385207A (zh) * 2014-07-23 2015-03-04 江西新余国泰特种化工有限责任公司 绸垫转装机
CN104385207B (zh) * 2014-07-23 2017-08-01 江西新余国泰特种化工有限责任公司 绸垫转装机
US11192275B2 (en) 2015-05-15 2021-12-07 Usnr, Llc Modular press

Also Published As

Publication number Publication date
DE69816942T2 (de) 2004-07-15
EP0916461B1 (fr) 2003-08-06
ITMO970207A0 (it) 1997-11-17
DE69816942D1 (de) 2003-09-11
IT1304947B1 (it) 2001-04-05
ES2202719T3 (es) 2004-04-01
ITMO970207A1 (it) 1999-05-17

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