WO1989000914A1 - Dispositif de fermeture du moule dans une presse d'injection - Google Patents

Dispositif de fermeture du moule dans une presse d'injection Download PDF

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Publication number
WO1989000914A1
WO1989000914A1 PCT/DE1988/000328 DE8800328W WO8900914A1 WO 1989000914 A1 WO1989000914 A1 WO 1989000914A1 DE 8800328 W DE8800328 W DE 8800328W WO 8900914 A1 WO8900914 A1 WO 8900914A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
closing
cylinder unit
mold
mounting plate
Prior art date
Application number
PCT/DE1988/000328
Other languages
German (de)
English (en)
Inventor
Hans Blüml
Original Assignee
Mannesmann 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 Mannesmann Ag filed Critical Mannesmann Ag
Publication of WO1989000914A1 publication Critical patent/WO1989000914A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/7653—Measuring, controlling or regulating mould clamping forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/68—Mould opening, closing or clamping devices hydro-mechanical
    • B29C45/681—Mould opening, closing or clamping devices hydro-mechanical using a toggle mechanism as mould clamping device

Definitions

  • the invention relates to a device for closing the mold on an injection molding machine according to the preamble of patent claim 1.
  • the procedure is such that the toggle lever mechanism first approaches the tool halves to a predetermined distance and then the so-called tool protection area is then traversed with a constant driving force.
  • the kinematic analysis of the toggle lever results in three transmission ratios, namely a path, speed and force transmission ratio, the latter being reciprocal to one another.
  • FIG. 1 shows a purely schematic representation of the mold closing part of an injection molding machine for keeping the forward force constant, from which the arrangement of the toggle lever mechanism and the piston-cylinder arrangement actuating it can be seen, and the electro-hydraulic control.
  • the figure generally shows the principle of a toggle lever mold closing device for an injection molding machine, the other parts of which are not shown, since they are sufficiently known.
  • the toggle lever mechanism designated as a whole by 1, is fastened at one end to a fixed end plate 2 and acts with its other end on a movable platen 3 on which tool plates, not shown, of a mold, which define the mold cavity, can be fastened.
  • the mold mounting plate 3 can be moved on bars 4 of the mold closing device.
  • a piston-cylinder arrangement 5 is flanged, the piston rod 6 of which protrudes through a corresponding opening in the end plate 2 and acts on the toggle mechanism 1.
  • this configuration is widely known and requires no further explanation for the person skilled in the art.
  • the position measuring systems 8 and 9 are fastened to the crosshead 7 and to the platen 3 for determining the position and by further differentiating the speed. Said differentiation of the path at the crosshead and platen is formed in the differentiators 10 and 11 and made available to the computing element 12. In accordance with the kinematic analysis listed, the operations are carried out in the computing element 12 and the result is fed to the proportional pressure valve 14 via the amplifier 13.
  • a higher-level CNC controller 15 communicates with the computing element via a data bus and supplies it with the corresponding data for the force setpoint, linearized area and piston area of the drive unit, in accordance with the machine size.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

Dans une presse d'injection munie d'un mécanisme à genouillère permettant de mouvoir le moule, on obtient à l'aide de transducteurs de position (8, 9) une course d'avancement linéaire et ainsi une force d'avancement constante.
PCT/DE1988/000328 1987-07-27 1988-06-02 Dispositif de fermeture du moule dans une presse d'injection WO1989000914A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3725199.6 1987-07-27
DE19873725199 DE3725199C3 (de) 1987-07-27 1987-07-27 Vorrichtung zum Schließen der Form an einer Spritzgießmaschine

Publications (1)

Publication Number Publication Date
WO1989000914A1 true WO1989000914A1 (fr) 1989-02-09

Family

ID=6332667

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1988/000328 WO1989000914A1 (fr) 1987-07-27 1988-06-02 Dispositif de fermeture du moule dans une presse d'injection

Country Status (2)

Country Link
DE (1) DE3725199C3 (fr)
WO (1) WO1989000914A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0987092A1 (fr) * 1998-03-31 2000-03-22 Sumitomo Heavy Industries, Ltd. Dispositif de commande de serrage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107259A (ja) * 1981-12-18 1983-06-25 Toyo Kikai Kinzoku Kk トグル式型締機構を有する成形機における低圧型締方法
JPS59147766A (ja) * 1983-02-15 1984-08-24 Ube Ind Ltd トツグル式型締装置の型締力検出方法
EP0192484A2 (fr) * 1985-02-20 1986-08-27 The Japan Steel Works, Ltd. Procédé pour contrôler l'ouverture/fermeture d'un moule dans une machine à mouler par injection

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1110534A (en) * 1965-11-22 1968-04-18 Peco Machinery Ltd Improvements in or relating to injection moulding machines and processes
DE1650785B2 (de) * 1968-02-27 1976-10-28 Klöckner-Ferromatic GmbH, 7831 Malterdingen Vorrichtung fuer die antriebsregelung von spritzgiessmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107259A (ja) * 1981-12-18 1983-06-25 Toyo Kikai Kinzoku Kk トグル式型締機構を有する成形機における低圧型締方法
JPS59147766A (ja) * 1983-02-15 1984-08-24 Ube Ind Ltd トツグル式型締装置の型締力検出方法
EP0192484A2 (fr) * 1985-02-20 1986-08-27 The Japan Steel Works, Ltd. Procédé pour contrôler l'ouverture/fermeture d'un moule dans une machine à mouler par injection

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Patent Abstracts of Japan, Band 7, Nr. 211 (M-243)(1356) 17. September 1983; & JP-A-58107259 (TOUYOU KIKAI KINZOKU) 25. Juni 1983 *
Patent Abstracts of Japan, Band 8, Nr. 276 (M-346)(1713) 18. Dezember 1984; & JP-A-59147766 (UBE KOSAN) 24. August 1984 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0987092A1 (fr) * 1998-03-31 2000-03-22 Sumitomo Heavy Industries, Ltd. Dispositif de commande de serrage
EP0987092A4 (fr) * 1998-03-31 2001-05-16 Sumitomo Heavy Industries Dispositif de commande de serrage

Also Published As

Publication number Publication date
DE3725199C2 (fr) 1990-12-06
DE3725199C3 (de) 1995-12-07
DE3725199A1 (de) 1989-02-16

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