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US3923440A - Hydraulic press for the molding of tiles and plates of ceramic or like materials - Google Patents

Hydraulic press for the molding of tiles and plates of ceramic or like materials Download PDF

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Publication number
US3923440A
US3923440A US491150A US49115074A US3923440A US 3923440 A US3923440 A US 3923440A US 491150 A US491150 A US 491150A US 49115074 A US49115074 A US 49115074A US 3923440 A US3923440 A US 3923440A
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United States
Prior art keywords
cross
die
bed
stationary
press
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Expired - Lifetime
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US491150A
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English (en)
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Luigi Bettonica
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    • 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
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/025—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space whereby the material is transferred into the press chamber by relative movement between a ram and the press chamber

Definitions

  • ABSTRACT A hydraulic press for the molding of tiles or like materials, comprising a horizontal base, to which a fore stationary bed and a rear stationary bed are firmly connected; two horizontally extending cylindrical rods or columns, parallel with each other, secured by their both ends to said beds and designed to serve as a support and a guide for a first cross-member, to which punch means are connected, and a second crossmember, carrying the die by which the side edges of the piece to be pressed are defined.
  • the die means includes a body by which the punches are supported.
  • the body is connected with the rear stationary bed and includes the die-carrying cross-member, along with the punch-carrying cross-member.
  • Programmed memory control means actuates the various press elements in proper sequence,
  • Two purposes are essentially to be fulfilled by the compaction of material into the die cavities, i.e. firstly to have all, or nearly all air included in the paste driven out therefrom, ensuring at the same time the required homogeneisation, with consequent increase in the plasticity of compacted paste; and then to confer the due consistenty to the shaped piece, which can be obtained by tightly pressing and compacting the particles by which the piece is composed.
  • the feeding of paste into the die cavities, the precompaction for driving the included air out of the paste, and the final, high-pressure compaction to confer the proper consistency and shape to green piece, are usually performed in at least three subsequent steps, synchronized by suitable electronic equipment and by hydraulic servocontrols. Such operations are rather time-consuming, due to fairly long travels that are to be covered by the different movable components, which results in a material increase in the prime costs.
  • potters wheels are utilized, instead of vertical or horizontal presses, to have the plastic ceramic paste duly shaped.
  • the latter equipment comprises: a cutting machine, by which round pieces are cut from the clay column; a rotary feeder whereon said pieces are manually laid, and by which they are transferred into gypsum molds, previously laid by hand on the throwing heads of the potters wheel.
  • the throwing heads are automatically positioned under the upper rotary head, and the molding operation is performed through its swinging motion.
  • the gypsum mold and the fresh molded plate are manually transferred into a drying oven.
  • the above procedure is time-consuming and requires much labor, which resuit in large increases in the prime costs.
  • the gypsum molds have a short useful life, and are to be discarded and renewed after a given number of molding operations.
  • the main object of this invention consists in the provision of an improved horizontal press, for the making of tiles and plates of ceramic and like materials, and wherein all operations, from the filling of the die to the ejection of the green pressed piece, as well as to bringing of different operating components of the machine back to their starting positions, are automatically performed in a pro-established sequence.
  • the horizontal press for the making of tiles and like material essentially comprises a horizontal base, to which a fore stationary bed, and a rear stationary bed are firmly connected; two horizontally extending, cylindrical guide columns, parallel to the horizontal base, secured by their both ends to said beds and designed to serve as a support and a guide for a first cross-member, to which the operating punch is connected.
  • a second crossmember carrying the die by which the side edges ofthe piece to be pressed are defined.
  • FIGS. 1, 2 and 3 are general views of horizontal press.
  • FIG. 4 is an enlarged longitudinal section, taken on a plane perpendicular to base plane, of horizontal press according to the invention, showing the assembly of operating member by which same press is characterized.
  • FIGS. 5, 6, 7, 8, 9 and 10 show, in a diagrammatic and substantially simplified way, the positions which are taken by the operating components, as shown in the FIG. 4, in the successive working steps of the press ac cording to the invention.
  • the horizontal press according to this invention, and as shown in the FIGS. 1 to 4 inclusive, comprises a horizontal base 1, to which a fore stationary bed 2 and a rear stationary bed 3 are firmly secured two horizontally extending, cylindrical guide columns 4 and 5 (see FIG. 3), parallel with the horizontal base 1.
  • the body 11 Firmly connected with the stationary rear bed is the body 11, ending by the punch 10, designed to form the bottom of die cavity, and that can be inserted thereinto.
  • Fast with the stationary fore bed 2 is a cylinder 15, wherein a double-acting piston 16 is slidingly fitted, such piston operated by a pressure fluid, that can be fed to said cylinder either through the duct 17, or through the duct 18, depending on whether the piston is to be moved forward or backward, along with the first crossmember 6, carrying the operating punch.
  • a double-acting piston 16 is slidingly fitted, such piston operated by a pressure fluid, that can be fed to said cylinder either through the duct 17, or through the duct 18, depending on whether the piston is to be moved forward or backward, along with the first crossmember 6, carrying the operating punch.
  • Inserted into the bottom of cylinder is a single-acting, adjustable hydraulic jack 19, by which the operating punch 7 can be properly positioned for the die filling operation.
  • the die filling volume can be adjusted according to the stroke of jack 19.
  • Two single-acting hydraulic jacks denoted by 24 and 24 respectively having pistons 25-25.
  • the second cross-member 9 is simultaneously acted upon through the piston rods 26-26, that are slidingly guided in the holes as formed in the first punch-carrying first crossmember 6.
  • the fore ends of said rods 26-26 are fitted with screw means 27-27, whereby to accurately adjust the die motions, via said jacks 24,24 designed to position the die for the final pressing operations.
  • Two single-acting hydraulic jacks with controlled stroke denoted by 33 and 33 respectively, have pistons 34-34.
  • the second cross-member 9 (defining the side surfaces of die) is simultaneously acted upon for the abutting of t he die at the beginning of the cycle.
  • the piston heads are fitted with screw means for the accurate adjustment of the die motions.
  • All jacks (20-20, 24-24, 30-30, 33-33, 37-37) are operated by feeding a pressure fluid (usually pressure oil) thereto through suitable ducts, as clearly shown in the FIG. 4.
  • Electromagnetically controlled hydraulic valves that are operated by control pulses (or informations) coming from a pre-setting device (or memory) preferably of the electronic type, already well known and widely utilized on many automatized tool machines, are utilized for the feeding, the flow adjustment and the interception of said hydraulic fluid.
  • FIGS. 5, 6, 7, 8, 9 and 10 wherein the position taken by the different components in the successive operating steps of machine are diagrammatically shown.
  • the inoperative jacks are shown by broken lines, while the operating jacks are shown by solid lines.
  • the operating punch 7 is advanced until the opening of die is closed by it (see FIG. 6). Then the cross-member 9 is advanced bringing the space between the punches 7 and 10 in coincidence with the duct as formed in the cross-member 9 (see FIG. 7). Under such conditions, the paste can flow into said space and can fill it. Then, by keeping both the punch 10 and the die still, the punch 7 is advanced, thus pressing said paste (see FIG. 8).
  • the cross-member 9 is then brought back, keeping the punches 7 and 10 between which the pressed piece is retained at rest, (see FIG. 9), whereupon the operating punch 7 is also moved backwardly, thereby leaving the pressed piece free and allowing it to be collected into a suitable container (see FIG. 10).
  • a press for the making of tiles and like material comprising: a horizontal base to which a fore stationary bed, and a rear stationary bed are firmly secured; first operating punch means, die means and two horizontally extending, cylindrical guide columns parallel with the horizontal base having their both ends fastened to said stationary bed, a first cross-member with which the operating punch means is connected, a second crossmember bearing the die means, vertical duct means through which the material to be pressed is allowed to flow into the die means, a body firmly secured to the stationary rear bed, second punch means by which the bottom of the die means is formed; and programmed memory control means for the press.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
US491150A 1973-08-17 1974-07-23 Hydraulic press for the molding of tiles and plates of ceramic or like materials Expired - Lifetime US3923440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT27946/73A IT992997B (it) 1973-08-17 1973-08-17 Pressa idraulica per la fabbrica zione di piastrelle e piatti di materiale ceramico e simili

Publications (1)

Publication Number Publication Date
US3923440A true US3923440A (en) 1975-12-02

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ID=11222641

Family Applications (1)

Application Number Title Priority Date Filing Date
US491150A Expired - Lifetime US3923440A (en) 1973-08-17 1974-07-23 Hydraulic press for the molding of tiles and plates of ceramic or like materials

Country Status (5)

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US (1) US3923440A (it)
DE (1) DE2437852A1 (it)
ES (1) ES429009A1 (it)
FR (1) FR2240802B3 (it)
IT (1) IT992997B (it)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123210A (en) * 1977-10-03 1978-10-31 Combustion Engineering, Inc. Briquette forming apparatus
US4124338A (en) * 1977-10-03 1978-11-07 Combustion Engineering, Inc. Hot briquette press
US4153404A (en) * 1977-09-14 1979-05-08 Turbo Refrigerating Company Apparatus for producing uniform blocks of ice
US4220442A (en) * 1978-12-04 1980-09-02 Wehr Corporation Press apparatus including plunger adjustment means
US4460326A (en) * 1979-08-30 1984-07-17 Laeis-Werke Ag. Press for moldings
WO2003033230A1 (en) * 2001-10-18 2003-04-24 Henderson James M Apparatus for molding brick and brick paver
US20100136180A1 (en) * 2007-02-01 2010-06-03 Nestec S.A. Method and apparatus for making centre-filled shaped food products

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1054058B (it) * 1976-01-13 1981-11-10 Bettonica L Pressa idraulica particolarmente per la formatura e la pressatura di oggetti ceramici cavi tronco cilindrici o tronco conici o simili
DE2630355C3 (de) * 1976-07-06 1984-10-11 Gebrüder Netzsch, Maschinenfabrik GmbH & Co, 8672 Selb Preßwerkzeug zum Herstellen keramischer Formlinge aus pulverförmiger Masse
DE2833830A1 (de) * 1978-08-02 1980-02-21 Andreas Haessler Verfahren zur herstellung von keramischen formlingen vorzugsweise plattenfoermigen z.b. dachziegel
IT1126525B (it) * 1979-12-07 1986-05-21 Welko Ind Spa Perfezionamenti agli stampi per presse destinate alla fabbricazione di piatti,o simili,di materiale ceramico
DE3024935C2 (de) * 1980-07-01 1986-07-24 Dorst-Keramikmaschinen-Bau Otto Dorst u. Dipl. Ing. Walter Schlegel, 8113 Kochel Preßwerkzeug zur Herstellung von schalenförmigen Preßkörpern, wie Platten, Tellern, Bechern, Schüsseln o.dgl., aus pulverförmigem, keramischem Material
DE3425392A1 (de) * 1984-07-10 1986-02-13 Bühler, Eugen, Dipl.-Ing., 8877 Burtenbach Verfahren zur herstellung von flachformlingen und einrichtung zur durchfuehrung dieses verfahrens
DE3940192A1 (de) * 1989-02-02 1990-08-09 Gottfried Weber Hydraulische presse

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008189A (en) * 1959-05-05 1961-11-14 Wilfred G Harvey Injection molder
US3173974A (en) * 1959-10-01 1965-03-16 Shenango China Inc Method and apparatus for dry-pressing ceramic objects
US3174187A (en) * 1961-02-28 1965-03-23 Schriever Ferdinand Molding apparatus
US3362046A (en) * 1964-01-23 1968-01-09 Netstal Ag Maschf Giesserei Method and apparatus for injection molding
US3554087A (en) * 1967-02-13 1971-01-12 Peter Florjancic Hydraulic closing device particularly for injection molding machines
US3666141A (en) * 1970-05-25 1972-05-30 Cincinnati Milacron Inc Method and apparatus for iterative control of shot size and cushion size
US3804576A (en) * 1971-06-16 1974-04-16 Hehl Karl Apparatus for pivoting a component or a group of components of an injection mold
US3830614A (en) * 1972-12-01 1974-08-20 A Kurtz Injection molding machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008189A (en) * 1959-05-05 1961-11-14 Wilfred G Harvey Injection molder
US3173974A (en) * 1959-10-01 1965-03-16 Shenango China Inc Method and apparatus for dry-pressing ceramic objects
US3174187A (en) * 1961-02-28 1965-03-23 Schriever Ferdinand Molding apparatus
US3362046A (en) * 1964-01-23 1968-01-09 Netstal Ag Maschf Giesserei Method and apparatus for injection molding
US3554087A (en) * 1967-02-13 1971-01-12 Peter Florjancic Hydraulic closing device particularly for injection molding machines
US3666141A (en) * 1970-05-25 1972-05-30 Cincinnati Milacron Inc Method and apparatus for iterative control of shot size and cushion size
US3804576A (en) * 1971-06-16 1974-04-16 Hehl Karl Apparatus for pivoting a component or a group of components of an injection mold
US3830614A (en) * 1972-12-01 1974-08-20 A Kurtz Injection molding machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4153404A (en) * 1977-09-14 1979-05-08 Turbo Refrigerating Company Apparatus for producing uniform blocks of ice
US4123210A (en) * 1977-10-03 1978-10-31 Combustion Engineering, Inc. Briquette forming apparatus
US4124338A (en) * 1977-10-03 1978-11-07 Combustion Engineering, Inc. Hot briquette press
US4220442A (en) * 1978-12-04 1980-09-02 Wehr Corporation Press apparatus including plunger adjustment means
US4460326A (en) * 1979-08-30 1984-07-17 Laeis-Werke Ag. Press for moldings
WO2003033230A1 (en) * 2001-10-18 2003-04-24 Henderson James M Apparatus for molding brick and brick paver
US20100136180A1 (en) * 2007-02-01 2010-06-03 Nestec S.A. Method and apparatus for making centre-filled shaped food products
US8876521B2 (en) * 2007-02-01 2014-11-04 Nestec S.A. Method and apparatus for making centre-filled shaped food products

Also Published As

Publication number Publication date
FR2240802B3 (it) 1976-09-24
DE2437852A1 (de) 1975-02-27
FR2240802A1 (it) 1975-03-14
ES429009A1 (es) 1976-08-16
IT992997B (it) 1975-09-30

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