JPS5772811A - Weight control method for molded article in powder compression molding machine - Google Patents

Weight control method for molded article in powder compression molding machine

Info

Publication number
JPS5772811A
JPS5772811A JP14870580A JP14870580A JPS5772811A JP S5772811 A JPS5772811 A JP S5772811A JP 14870580 A JP14870580 A JP 14870580A JP 14870580 A JP14870580 A JP 14870580A JP S5772811 A JPS5772811 A JP S5772811A
Authority
JP
Japan
Prior art keywords
weight
correction signal
compression molding
time
control mechanism
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.)
Pending
Application number
JP14870580A
Other languages
Japanese (ja)
Inventor
Hiroshi Kokuryo
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.)
Hata Tekkosho Co Ltd
Original Assignee
Hata Tekkosho Co Ltd
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 Hata Tekkosho Co Ltd filed Critical Hata Tekkosho Co Ltd
Priority to JP14870580A priority Critical patent/JPS5772811A/en
Publication of JPS5772811A publication Critical patent/JPS5772811A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To prevent hunting phenomena of a weight controlling operation and enhance the accuracy of weight control by a method wheein the inputting of a weight correction signal into a weight control mechanism is interrupted during the period from the time of outputting the correction signal for the control mechanism to the time of compression molding a weight-controlled powder.
CONSTITUTION: At the time of compression molding, changes of the load exerted on a lower pestle 5 are converted into electrical quantities by a load-electric converter 9, and the electrical quantities are fed into a weight discriminator 10. Then, it is discriminated whether or not the electrical quantities passed through an amplifier 10a and an intergrator 10b are within the range between upper and lower weight limits preset on a setter 10c. When the electricalquantities have a tendency to deviate from the preset range, the weight correction signal A and a starting signal B are outputted from the setter 10c. The correction signal A functions to operate the weight control mechanism 11 to control the amount of the powder charged into each of mortars 2. On the other hand, the starting signal B functions to operate a gate controller 13 to close a gate 12 over the period from the time of outputting the correction signal A to the time of conducting the compression molding at the mortar 2 which is charged with the weight-controlled powder, whereby interrupting the inputting of the correction signal into the control mechanism 11 during said period.
COPYRIGHT: (C)1982,JPO&Japio
JP14870580A 1980-10-23 1980-10-23 Weight control method for molded article in powder compression molding machine Pending JPS5772811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14870580A JPS5772811A (en) 1980-10-23 1980-10-23 Weight control method for molded article in powder compression molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14870580A JPS5772811A (en) 1980-10-23 1980-10-23 Weight control method for molded article in powder compression molding machine

Publications (1)

Publication Number Publication Date
JPS5772811A true JPS5772811A (en) 1982-05-07

Family

ID=15458746

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14870580A Pending JPS5772811A (en) 1980-10-23 1980-10-23 Weight control method for molded article in powder compression molding machine

Country Status (1)

Country Link
JP (1) JPS5772811A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484879A (en) * 1982-03-05 1984-11-27 Basf Aktiengesellschaft Roller press for the production of granules or moldings
US4999151A (en) * 1986-08-23 1991-03-12 Firma Wilhelm Fette Gmbh Method of quality assurance in the manufacture of tablets
JP2008126636A (en) * 2006-11-24 2008-06-05 Dainippon Printing Co Ltd Preform compression molding method and preform compression molding apparatus
JP2008143041A (en) * 2006-12-11 2008-06-26 Sumitomo Heavy Ind Ltd Resin weighing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484879A (en) * 1982-03-05 1984-11-27 Basf Aktiengesellschaft Roller press for the production of granules or moldings
US4999151A (en) * 1986-08-23 1991-03-12 Firma Wilhelm Fette Gmbh Method of quality assurance in the manufacture of tablets
JP2008126636A (en) * 2006-11-24 2008-06-05 Dainippon Printing Co Ltd Preform compression molding method and preform compression molding apparatus
JP2008143041A (en) * 2006-12-11 2008-06-26 Sumitomo Heavy Ind Ltd Resin weighing device

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