EP0847849A2 - Presse pour le moulage d'articles fabriqués en argile - Google Patents

Presse pour le moulage d'articles fabriqués en argile Download PDF

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Publication number
EP0847849A2
EP0847849A2 EP97121283A EP97121283A EP0847849A2 EP 0847849 A2 EP0847849 A2 EP 0847849A2 EP 97121283 A EP97121283 A EP 97121283A EP 97121283 A EP97121283 A EP 97121283A EP 0847849 A2 EP0847849 A2 EP 0847849A2
Authority
EP
European Patent Office
Prior art keywords
press
shaft
mould
electric motor
moulding
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
EP97121283A
Other languages
German (de)
English (en)
Other versions
EP0847849A3 (fr
EP0847849B1 (fr
EP0847849B2 (fr
Inventor
Giorgio Bertola
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.)
BONGIOANNI MACCHINE S.R.L.
Original Assignee
FOMB Officine Meccaniche Bongioanni 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
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Application filed by FOMB Officine Meccaniche Bongioanni Srl filed Critical FOMB Officine Meccaniche Bongioanni Srl
Publication of EP0847849A2 publication Critical patent/EP0847849A2/fr
Publication of EP0847849A3 publication Critical patent/EP0847849A3/fr
Publication of EP0847849B1 publication Critical patent/EP0847849B1/fr
Application granted granted Critical
Publication of EP0847849B2 publication Critical patent/EP0847849B2/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/261—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks by cams
    • 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
    • B30B11/005—Control arrangements
    • 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
    • B30B11/12—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 co-operating with moulds on the circumference of a rotating drum

Definitions

  • the present invention refers to improved presses for clay manufactured articles, such as tiles and the like, and particularly to so-called barrel presses. Presses of this kind include both presses actuated by a cam and presses actuated by an eccentric-shaft (gear crank).
  • Such barrel presses are driven by an A.C. electric motor, a D.C. or "brushless” electric motor, and have a well defined production rate (rotation per minute) which is dictated by the requirements of the article to be moulded, with an angular speed that is substantially constant, both during the proper moulding step and during the approaching and withdrawing paths.
  • An object of the present invention is to overcome the above mentioned drawbacks and limitations, and particularly to increase the press productivity without altering the article quality.
  • the rotation speed of the cam is changed by means acting on the rotation speed of the motor driving such member, the motor being preferably a D.C. motor or a "brushless" motor.
  • the rotation speed is kept substantially low and anyhow adapted to the moulding of the article, e.g. a tile, along the rotation arc when the moulds are in contact with the clay, and is then increased to a maximum during the lifting of the upper mould, and then decreased when the upper mould is lowered so as to reach the point at which the moulding starts with an optimum speed for moulding the article.
  • the means for controlling the motor rotation speed employs positional references of the encoder type, fitted to the cam shaft, that supplies suitable information to the control and command unit of the motor (an A.C. or "brushless” motor) in accordance with the press type, in order to modify the moulding cam timing in a predetermined optimum way.
  • said encoder supplies the angular position of the eccentric-shaft to allow a change of the sinusoidal moulding curve, typical of an eccentric-shaft press, into a predetermined optimum curve, similar to that of a cam press.
  • a press 1 of the cam-actuated type for moulding clay articles, such as tiles and the likes comprises a structure on which an electric motor 2 is mounted and through a kinematic chain 4 such motor drives with a reciprocating motion the upper half-mould 5 of a mould 3.
  • the motor drives a pulley or barrel 12 and the press is also known as a barrel press.
  • the kinematic chain further comprises a suitably shaped cam 9 rotatable about a shaft 8.
  • At least an encoder 7 is mounted to the shaft 8, and is adapted to detect the shaft angular position and supply such information to a unit 13 (Fig. 7) controlling the speed of the motor 2.
  • Fig.s 2 and 4 illustrate a press 1 ⁇ for producing clay articles in which the kinematic chain 14 comprises an eccentric shaft 19 rotatably mounted on a shaft 18.
  • the other components of the press 1 ⁇ substantially correspond to the components of the press 1 and are indicated by the same numeral references.
  • At least an encoder 7 is mounted to the shaft 18, and is adapted to measure the angular position of such shaft and supply such information to unit 13 for controlling the speed of the motor 2.
  • Fig. 7 is a block diagram illustrating the arrangement of the invention.
  • the motor 2 applies a reciprocating motion to the upper half-mould of the mould 3.
  • the rotation of the motor 2 is controlled by the device 13 that receives information about the angular position of the shaft and through known control devices, typically a programmed microprocessor, accelerates the shaft rotation when the half-mould starts to be lifted, and decelerates the shaft rotation at a properly selected point during the lowering step, tiyically in the first portion of the downward path, so that the upper half-mould reaches the position at which the moulding starts with an optimum speed for moulding the article.
  • known control devices typically a programmed microprocessor
  • the electric motor of the press will turn at a greater speed during the inactive step, will decelerare when approaching to the working step, will mould the article at a desired speed, and will be again accelerated to the greater speed during the next inactive step.
  • the motor speed during the inactive step is about 23 r.p.m., and during the working step is of about 17 rpm.
  • the present invention accomplished a remarkable increase in the production rate, without altering the quality of the moulded article.
  • Figure 6 shows two curves illustrating the stroke or displacement s of the half-mould as a function of the time in an eccentric-shaft press.
  • the solid line corresponds to a constant speed of the motor, while the dash and point line depicts a mould displacement in accordance with the present invention. It is evident the longer duration of the mould closing when the half-mould moves at a low speed for a much longer time than in a conventional eccentric-shaft press.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Presses (AREA)
  • Press Drives And Press Lines (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
EP19970121283 1996-12-10 1997-12-04 Presse pour le moulage d'articles fabriqués en argile Expired - Lifetime EP0847849B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO960998 1996-12-10
IT96TO000998A IT1289725B1 (it) 1996-12-10 1996-12-10 Presse a tamburo, in particolare per manufatti in argilla, perfezionate

Publications (4)

Publication Number Publication Date
EP0847849A2 true EP0847849A2 (fr) 1998-06-17
EP0847849A3 EP0847849A3 (fr) 1999-03-31
EP0847849B1 EP0847849B1 (fr) 2003-05-14
EP0847849B2 EP0847849B2 (fr) 2006-04-12

Family

ID=11415088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970121283 Expired - Lifetime EP0847849B2 (fr) 1996-12-10 1997-12-04 Presse pour le moulage d'articles fabriqués en argile

Country Status (4)

Country Link
EP (1) EP0847849B2 (fr)
DE (1) DE69721949T3 (fr)
ES (1) ES2198524T5 (fr)
IT (1) IT1289725B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1213134A1 (fr) * 2000-12-08 2002-06-12 Bureau d'Etudes Techniques et de Realisations Industrielles Presse
FR2817794A1 (fr) * 2000-12-07 2002-06-14 Bongioanni Macchine Srl Presse mecanique pour la production de tuiles
EP1961537A2 (fr) 2007-02-21 2008-08-27 Bongioanni Stampi S.r.l. Moule pour la fabrication de carreaux en céramique et procédé de fabrication de ce moule
CN104960231A (zh) * 2015-06-26 2015-10-07 姚旺东 一种冲压制棒机
CN105946265A (zh) * 2016-06-14 2016-09-21 芜湖同创模具机械有限公司 一种高效紧凑式自动压型装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106424288A (zh) * 2016-10-20 2017-02-22 宁波博信机械制造有限公司 一种采用凸轮传动且具有死点保压功能的冲床

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR967519A (fr) * 1947-06-14 1950-11-06 Perfectionnements apportés aux cames excentrées des presses tournantes, notamment de celles servant à la fabrication de tuiles nervurées
EP0404350A2 (fr) * 1989-06-23 1990-12-27 The Whitaker Corporation Presse ayant un dispositif de circuit de commande
EP0536804A2 (fr) * 1986-12-29 1993-04-14 Ishii Tool & Engineering Corporation Procédé de commande d'une presse
DE4401499A1 (de) * 1994-01-20 1995-08-03 Haendle Gmbh & Co Kg Presse zum Verpressen keramischer Massen, insbesondere zum Herstellen von Dachziegeln
DE19548439A1 (de) * 1994-12-28 1996-07-11 Yazaki Corp Verfahren zum Crimpen eines Kontaktelementes und Vorrichtung für das Verfahren
US5588344A (en) * 1994-06-13 1996-12-31 Murata Machinery, Ltd. Electric servo motor punch press ram drive

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR967519A (fr) * 1947-06-14 1950-11-06 Perfectionnements apportés aux cames excentrées des presses tournantes, notamment de celles servant à la fabrication de tuiles nervurées
EP0536804A2 (fr) * 1986-12-29 1993-04-14 Ishii Tool & Engineering Corporation Procédé de commande d'une presse
EP0404350A2 (fr) * 1989-06-23 1990-12-27 The Whitaker Corporation Presse ayant un dispositif de circuit de commande
DE4401499A1 (de) * 1994-01-20 1995-08-03 Haendle Gmbh & Co Kg Presse zum Verpressen keramischer Massen, insbesondere zum Herstellen von Dachziegeln
US5588344A (en) * 1994-06-13 1996-12-31 Murata Machinery, Ltd. Electric servo motor punch press ram drive
DE19548439A1 (de) * 1994-12-28 1996-07-11 Yazaki Corp Verfahren zum Crimpen eines Kontaktelementes und Vorrichtung für das Verfahren

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2817794A1 (fr) * 2000-12-07 2002-06-14 Bongioanni Macchine Srl Presse mecanique pour la production de tuiles
EP1213134A1 (fr) * 2000-12-08 2002-06-12 Bureau d'Etudes Techniques et de Realisations Industrielles Presse
FR2817795A1 (fr) * 2000-12-08 2002-06-14 Bureau Etu Tech Et De Real Ind Presse
EP1961537A2 (fr) 2007-02-21 2008-08-27 Bongioanni Stampi S.r.l. Moule pour la fabrication de carreaux en céramique et procédé de fabrication de ce moule
CN104960231A (zh) * 2015-06-26 2015-10-07 姚旺东 一种冲压制棒机
CN105946265A (zh) * 2016-06-14 2016-09-21 芜湖同创模具机械有限公司 一种高效紧凑式自动压型装置
CN105946265B (zh) * 2016-06-14 2017-12-05 芜湖同创模具机械有限公司 一种高效紧凑式自动压型装置

Also Published As

Publication number Publication date
EP0847849A3 (fr) 1999-03-31
ES2198524T5 (es) 2006-11-16
ES2198524T3 (es) 2004-02-01
ITTO960998A1 (it) 1998-06-10
EP0847849B1 (fr) 2003-05-14
EP0847849B2 (fr) 2006-04-12
DE69721949T3 (de) 2006-11-23
DE69721949D1 (de) 2003-06-18
DE69721949T2 (de) 2004-03-11
IT1289725B1 (it) 1998-10-16

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