GB1127647A - Automatic control system for moulding presses - Google Patents

Automatic control system for moulding presses

Info

Publication number
GB1127647A
GB1127647A GB4998465A GB4998465A GB1127647A GB 1127647 A GB1127647 A GB 1127647A GB 4998465 A GB4998465 A GB 4998465A GB 4998465 A GB4998465 A GB 4998465A GB 1127647 A GB1127647 A GB 1127647A
Authority
GB
United Kingdom
Prior art keywords
brick
moulding
length
piston
potentiometer
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.)
Expired
Application number
GB4998465A
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.)
Laeis Werke AG
Original Assignee
Laeis Werke AG
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 Laeis Werke AG filed Critical Laeis Werke AG
Publication of GB1127647A publication Critical patent/GB1127647A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/0063—Control arrangements
    • B28B17/0081—Process control

Abstract

1,127,647. Automatic control of moulding. LAEIS-WERKE A.G. Nov. 24, 1965 [Nov. 28, 1964], No.49984/65. Heading G3R. [Also in Division B5] In a system for press-moulding a succession of articles, the magnitude of the error in volume, height or ram pressure for each article relative to a desired value is measured and utilized to effect corresponding correction for the next article automatically. In Fig. 1, a brick 4 is formed in a moulding press actuated by a piston 2, travel of which is terminated when the fluid-pressure behind it reaches a value at which a pressureresponsive switch 16 closes a valve 24 to cut off the supply of fluid. The length of the brick so formed is measured by a potentiometer 26 detecting relative movement between the two ends of the press and any deviation of this length from a desired length is effective through an electrical follow-up controller 31 to operate a motor 12 adjusting the position of a back stop 11 for piston 2 so that the volume of material supplied for the next brick results in a brick of the desired size. In a modification, Fig. 2 (not shown), movement of the piston is terminated by a switch which operates when the length of the brick reaches a desired value, and a potentiometer, operated by the fluid-pressure which is then applied, controls the setting of the back stop so that the next brick has the desired density. Use of both length and pressure signals, which are combined electrically by a bridge circuit, or mechanically, to effect correction, is referred to. In order to allow for the compressibility of the moulding material, a potentiometer operated by a roller pressing on a stream of the material is associated with a bridge circuit which is periodically balanced and connected to the main control circuit to modify the control. Use of induction, capacity, magnetic or radiation type detectors in place of potentiometers is referred to. Correction may be effected by varying the weight or rate of feed of the moulding material instead of adjusting the piston back stop. The moulding machine may be of the vibrating type.
GB4998465A 1964-11-28 1965-11-24 Automatic control system for moulding presses Expired GB1127647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964L0049408 DE1584543C3 (en) 1964-11-28 1964-11-28 Control device on presses for the production of moldings of the same density and dimensions

Publications (1)

Publication Number Publication Date
GB1127647A true GB1127647A (en) 1968-09-18

Family

ID=7272956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4998465A Expired GB1127647A (en) 1964-11-28 1965-11-24 Automatic control system for moulding presses

Country Status (2)

Country Link
DE (1) DE1584543C3 (en)
GB (1) GB1127647A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459130A1 (en) * 1979-06-19 1981-01-09 Dorst Keramikmasch INSTALLATION FOR DETERMINING THE HEIGHT OF MOLDED OBJECTS ON A PRESS AND IN PARTICULAR MOLDED OBJECTS FROM A POWDERY MATERIAL
FR2541769A1 (en) * 1983-02-28 1984-08-31 Fischer Ag Georg METHOD AND DEVICE FOR MEASURING PROPERTIES OF A MATERIAL TO BE MOLDED AND USE OF SAID DEVICE
WO1992013692A1 (en) * 1991-02-05 1992-08-20 Robert Bosch Gmbh Process and device for the production of accurately dimensioned mouldings from moulding pastes
EP0566171A1 (en) * 1992-03-03 1993-10-20 MASS S.p.A. Ceramic mold control device
NL1006041C2 (en) * 1997-05-13 1998-11-19 Struyk Verwo Groep B V Press moulding process for making shaped concrete articles

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367859B1 (en) * 1988-11-11 1994-03-02 Hans Ruf Method for making briquets having dimensional stability and briquetting press for carrying out the method
DE3844334C1 (en) * 1988-12-30 1990-06-28 Robert Bosch Gmbh, 7000 Stuttgart, De
DE3930475A1 (en) * 1989-09-12 1991-03-14 Dorst Masch & Anlagen PRESS FOR THE PRODUCTION OF TAILORED PRESSINGS FROM POWDER-SHAPED MATERIAL
DE3937698A1 (en) * 1989-11-13 1991-05-23 Hermann Dipl Ing Willeck Mfg. concrete blocks using vibration telephone - measuring vibration amplitude to terminate vibration amplitude is within defined limits
DE69106876T2 (en) * 1991-11-05 1995-08-31 Ucar Carbon Tech Process for isostatic pressing.
DE10016922B4 (en) * 2000-02-23 2006-09-07 Besser Gmbh Apparatus for producing stones, in particular concrete blocks

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459130A1 (en) * 1979-06-19 1981-01-09 Dorst Keramikmasch INSTALLATION FOR DETERMINING THE HEIGHT OF MOLDED OBJECTS ON A PRESS AND IN PARTICULAR MOLDED OBJECTS FROM A POWDERY MATERIAL
FR2541769A1 (en) * 1983-02-28 1984-08-31 Fischer Ag Georg METHOD AND DEVICE FOR MEASURING PROPERTIES OF A MATERIAL TO BE MOLDED AND USE OF SAID DEVICE
GB2135785A (en) * 1983-02-28 1984-09-05 Fischer Ag Georg Producing moulding compound test pieces
US4616508A (en) * 1983-02-28 1986-10-14 Georg Fischer Aktiengesellschaft Method and apparatus for producing a test piece of molding compound useful in measuring properties thereof
WO1992013692A1 (en) * 1991-02-05 1992-08-20 Robert Bosch Gmbh Process and device for the production of accurately dimensioned mouldings from moulding pastes
EP0566171A1 (en) * 1992-03-03 1993-10-20 MASS S.p.A. Ceramic mold control device
NL1006041C2 (en) * 1997-05-13 1998-11-19 Struyk Verwo Groep B V Press moulding process for making shaped concrete articles

Also Published As

Publication number Publication date
DE1584543C3 (en) 1979-04-05
DE1584543A1 (en) 1970-03-19
DE1584543B2 (en) 1973-11-08

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