WO2003047835A1 - Dispositif de fixation pour plateaux de fixation et/ou plateaux de bridage d'une machine a mouler des matieres plastiques, et machine a mouler des matieres plastiques equipee de ce dispositif - Google Patents

Dispositif de fixation pour plateaux de fixation et/ou plateaux de bridage d'une machine a mouler des matieres plastiques, et machine a mouler des matieres plastiques equipee de ce dispositif Download PDF

Info

Publication number
WO2003047835A1
WO2003047835A1 PCT/EP2002/013338 EP0213338W WO03047835A1 WO 2003047835 A1 WO2003047835 A1 WO 2003047835A1 EP 0213338 W EP0213338 W EP 0213338W WO 03047835 A1 WO03047835 A1 WO 03047835A1
Authority
WO
WIPO (PCT)
Prior art keywords
molding machine
flange plate
machine frame
plastic molding
torsion element
Prior art date
Application number
PCT/EP2002/013338
Other languages
German (de)
English (en)
Inventor
Klaus Becker
Guido Legewie
David Lequeux
Original Assignee
Billion S.A.
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 Billion S.A. filed Critical Billion S.A.
Priority to AU2002364383A priority Critical patent/AU2002364383A1/en
Priority to EP02799729A priority patent/EP1453650A1/fr
Publication of WO2003047835A1 publication Critical patent/WO2003047835A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/047—C-shaped frames
    • 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
    • B29C45/1761—Means for guiding movable mould supports or injection units on the machine base or frame; Machine bases or frames
    • 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
    • B29C45/1761—Means for guiding movable mould supports or injection units on the machine base or frame; Machine bases or frames
    • B29C2045/1768—Means for guiding movable mould supports or injection units on the machine base or frame; Machine bases or frames constructions of C-shaped frame elements
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/28—Blow-moulding apparatus
    • B29C49/28006—Blow-moulding apparatus having special frame

Definitions

  • the invention relates to a fastening arrangement for mold mounting plates and / or a flange plate of a plastic molding machine, in particular an injection molding machine, according to the preamble of claim 1 and a plastic molding machine, in particular injection molding machine, with the aforementioned fastening arrangement according to the preamble of claim 7
  • a tie bar-less injection molding machine with a machine frame, a fixed and a movable mold mounting plate is known from the European patent EP 0 311 133 B2.
  • the fixed mold mounting plate is fastened to one leg of the essentially U-shaped machine frame.
  • On the opposite leg of the machine frame is a fixed cylinder plate is arranged, on which a piston / cylinder of a hydraulic locking mechanism is attached. The closing force that occurs during the spraying process and the driving force between the cylinder plate and the fixed platen is therefore only derived via the machine frame.
  • the movable platen is attached to the piston / Zyl ⁇ ndere ⁇ nhe ⁇ t mounted tiltable about a horizontal axis, so that when the closing force is applied the be movable platen can incline parallel to the fixed platen.
  • a return spring is arranged in the area of the horizontal axis, which ensures that when the mold is open, the movable platen is returned to the vertical. This is intended to create a tie-bar-less injection molding machine which ensures that the platen parallelism of the mold mounting plates and thus an absolutely tight mold is ensured even when the clamping force is strong.
  • the European patent EP 0 554 068 B2 describes an injection molding machine with an essentially box-shaped machine frame, on which a fixed platen is attached. Opposed to this mold mounting plate is a movable mold mounting plate, which is slidably supported on the machine frame and on the back of which a piston of a hydraulic piston / cylinder unit rigidly engages.
  • the cylinder housing of this piston / cylinder unit is supported on a pressure plate, which, like the movable platen, is supported on the machine frame.
  • the pressure plate is connected via a joint with a horizontal axis oriented transversely to the direction of movement of the piston / cylinder unit with a leg of a U-shaped bracket.
  • the end of the opposite leg of the bracket is connected to the fixed platen via a corresponding joint.
  • the axes of the joints are aligned centrally with respect to the longitudinal axis of the piston / cylinder unit.
  • Two brackets are provided, which are arranged laterally next to the machine frame.
  • a comparable injection molding machine is also known from German patent application DE 44 45 448 A1.
  • the fixed platen and the pressure plate for the piston / cylinder unit are not connected to each other via two but four U-shaped brackets in order to protect the plates from the diverging reaction forces support each other.
  • These U-shaped brackets which act as tension members, are arranged in pairs on both sides of the machine frame, with one bracket per side being articulated to both plates at an end remote from the frame and the other bracket being connected to both plates at an end closer to the frame. It should also be possible to design the brackets attached to the end of the plates closer to the frame in an almost straight line.
  • a different shape of the brackets near and far from the frame means that their deformation properties in the longitudinal direction of the injection molding machine are different.
  • the frame away from the frame is supported by a piston / cylinder unit on the fixed platen.
  • the compressive force of these additional piston / cylinder units is dimensioned such that the parallelism of the
  • a further injection molding machine with an essentially C-shaped machine frame with two frame legs which are also not connected via spars is known from the European patent EP 0 789 648 B1.
  • a stationary platen is mounted on a frame leg; a flange plate of a locking device is attached to the other frame leg.
  • the locking device essentially consists of a hydraulic piston / cylinder unit and moves the movable platen, which is slidably supported on the machine frame.
  • Flange plate and the stationary platen are each attached to the frame legs of the machine frame via so-called holding parts.
  • holding parts During the closing process, the holding parts of the flange plate are subjected to tension and those of the stationary platen to pressure.
  • the holding parts are functionally comparable to springs whose elasticity is less than that of the machine frame.
  • several holding elements are provided, which are distributed over the height of the stationary mold mounting plate and the flange plate and each have a different elasticity, the lower holding parts having a greater elasticity than the upper holding parts.
  • the holding parts are as
  • Bearing axes are at a greater distance from the plates so that elastically deformable compression rods can be arranged between the plates and the bearing axes. This means that the plates can deflect under the injection pressure in the area of the lower bearing axes in order to maintain the plane parallelism of the mold during injection molding.
  • This configuration is intended to offer a solution for reducing the plate deflection by means of asymmetrical internal tool pressures and tearing forces and for automatically compensating for the resulting non-parallelism between the mold halves of the molds.
  • a tie-bar-less injection molding machine is already described in German utility model DE 94 21 871 U1, the stationary platen of which is fixedly arranged on one leg of the c-shaped machine frame.
  • the movable platen is connected via a joint to a hydraulic piston / cylinder unit, which is supported on one leg of the machine frame.
  • the joint is axisless forms and consists of a cuboid body which has incisions from below to create a limited elasticity of the body. The incisions have the shape of right triangles and are in theirs
  • Alignment alternately introduced into the body.
  • the present invention is based on the object of creating a reliable fastening arrangement for mold mounting plates and / or flange plates of a plastic molding machine, in particular an injection molding machine, and a further plastic molding machine, in particular an injection molding machine, with such a fastening arrangement, which, when the clamping force builds up, ensures the parallelism of the mold mounting plates and thus an absolutely tight tool is guaranteed.
  • a fastening arrangement for mold mounting plates and / or flange plates of a plastic molding machine in particular an injection molding machine with an axleless joint
  • this axleless joint as an essentially torsion element ensures that the relative movement between the mold mounting plates and / or the flange plates, which is only a few minutes of angle and a machine frame of a plastic molding machine are possible on the one hand and are better controllable on the other.
  • torsional stresses in the torsion elements according to the invention of the axleless joints according to the known prior art can be calculated more reliably, in particular with regard to their service life.
  • the torsion element is on the one hand on the platen or on the flange plate and on the other hand on one Machine frame of the plastic molding machine attached.
  • the torsion element is rod-shaped, preferably in the form of a round tube, the longitudinal extent of which is oriented transversely to the surface for receiving the mold half of the mold mounting plate or the surface of the flange plate.
  • the longitudinal extension of the torsion element is oriented vertically.
  • the axleless joint is also provided with a tab in addition to the torsion element, which is fastened to the rear of the platen or flange plate and extends at right angles therefrom.
  • the tab has a hole in which the torsion element is fastened in a rotationally fixed manner. The remaining free end of the torsion element is fastened in a rotationally fixed manner to a machine frame of the plastic molding machine at a distance from the tab.
  • two spaced apart tabs are provided on the platen or flange plate, in the
  • the fastening arrangement according to the invention with the torsion element is particularly suitable for use in a plastic molding machine, in particular an injection molding machine, with an essentially U-shaped machine frame, with mold mounting plates and a flange plate.
  • a plastic molding machine in particular an injection molding machine, with an essentially U-shaped machine frame, with mold mounting plates and a flange plate.
  • injection molding machines are also referred to as three-plate machines.
  • at least two axleless joints, which are laterally spaced from one another, are then arranged on the fixed platen and the flange plate for the closing drive, in each case in the region thereof facing away from the machine frame.
  • these joints are preferably located in the corner areas of the plates. It can thus be achieved that the central region of the platen and the flange plate for other components such. B. the locking drive is kept clear.
  • these axless joints arranged on the upper ends of the fixed platen and the flange plate interact with at least one tie rod, which is arranged in the region of the end of the fixed platen and the flange plate facing the machine frame. This creates what is known as a low-profile injection molding machine, which allows largely free access to the mold halves arranged on the mold mounting plates.
  • two tie rods are provided, each of which is arranged in the lower corners of the fixed platen and the flange plate facing the machine frame.
  • the tie rods are each assigned a spring element that is adjustable.
  • the plastic molding machine preferably has a machine frame which essentially consists of two U-shaped side parts, at the upper ends of which the legs engage the axleless joints.
  • FIG. 1 shows a side view of a plastic injection molding machine, shown schematically and partially,
  • Figure 2 is a plan view of Figure 1 and
  • FIG. 3 shows an enlarged detail of FIG. 2 from the area of an axleless joint.
  • FIG. 1 shows a side view of a plastic injection molding machine which is shown schematically and only partially.
  • the clamping unit and the movable platen connected to it which preferably slide on the tie rods
  • the machine frame 2 is essentially formed from two c-shaped brackets 2a with upstanding legs 2b (FIG. 1).
  • an axleless joint 6 is attached, on which the flange plate 4 is suspended on the left side and the fixed platen 3 on the opposite right side.
  • the axleless joint 6 engages the upper or the ends of the fixed platen 3 and the flange plate 4 facing away from the machine frame 2.
  • tie rods 1 are over on one side
  • Spring elements 5 supported on the flange plate 4.
  • the fastening arrangement can also be used for so-called two-plate machines and other plastic molding machines. It can also be seen from FIG. 2 that the stationary platen 3 and the flange plate 4 are each connected to the legs 2b of the machine frame 2 in their lateral edge areas and in their upper corner areas via the axleless joints 6.
  • FIG. 3 shows an enlarged detail from the area of an axleless joint 6.
  • This axleless joint 6 essentially consists of a torsion element 6a and tabs 6b.
  • two laterally spaced tabs are provided, which are screwed to the back of the fixed platen 3 and the flange plate 5, on the opposite of the fixed platen 3 and the flange plate 5
  • a bore 6c is provided in each end, into which the torsion element 6a is inserted and subsequently welded to the brackets 6b in a rotationally fixed manner.
  • a corresponding bore 2c in the leg 2b of the machine frame 2 is provided in order to guide the torsion element 6a, which is preferably designed as a pipe section, through the machine frame 2 and then to weld it together.
  • the longitudinal direction L of the gate Sions institute 6a is thus aligned perpendicular to the tabs 6b and perpendicular to the closing direction S of the injection molding machine.
  • the longitudinal direction L runs horizontally in a horizontal injection molding machine.
  • This alignment of the torsion element 6a compensates for the outward deflection of the legs 2b of the machine frame 2 to the outside by a corresponding yielding of the tie rods 1 as well as the relative movement required between the vertically standing one due to a clamping force applied to the fixed platen 3 and the flange plate 4 fixed mold mounting plate 3 and the flange plate 4 and the leg 2b of the machine frame 2 by appropriate rotation of the torsion element 6a.
  • This relative movement can advantageously be absorbed by this torsion element 6a in a few angular minutes and, compared to a conventional joint with one axis, no lubrication is required.

Abstract

L'invention concerne un dispositif de fixation pour des plateaux de fixation et/ou plateaux de bridage d'une machine à mouler des matières plastiques, notamment d'une presse d'injection, comportant une articulation sans axe. L'invention est caractérisée en ce que cette articulation sans axe (6) comprend essentiellement un élément de torsion (6a). Dans un mode de réalisation préféré de l'invention, cet élément de torsion (6a) se présente sous la forme d'une barre, de préférence sous la forme d'un tube rond, dont l'axe longitudinal (L) est perpendiculaire à la surface du plateau de fixation (3) ou du plateau de bridage (4).
PCT/EP2002/013338 2001-12-01 2002-11-27 Dispositif de fixation pour plateaux de fixation et/ou plateaux de bridage d'une machine a mouler des matieres plastiques, et machine a mouler des matieres plastiques equipee de ce dispositif WO2003047835A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002364383A AU2002364383A1 (en) 2001-12-01 2002-11-27 Fixing device for die platens and/or flange plates of a plastic moulding machine, and plastic moulding machine comprising the same
EP02799729A EP1453650A1 (fr) 2001-12-01 2002-11-27 Dispositif de fixation pour plateaux de fixation et/ou plateaux de bridage d'une machine a mouler des matieres plastiques, et machine a mouler des matieres plastiques equipee de ce dispositif

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10159118A DE10159118A1 (de) 2001-12-01 2001-12-01 Befestigungsanordnung für Formaufspannplatten und/oder Flanschplatten einer Kunststoffformmaschine, sowie Kunststoffformmaschine hiermit
DE10159118.7 2001-12-01

Publications (1)

Publication Number Publication Date
WO2003047835A1 true WO2003047835A1 (fr) 2003-06-12

Family

ID=7707750

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/013338 WO2003047835A1 (fr) 2001-12-01 2002-11-27 Dispositif de fixation pour plateaux de fixation et/ou plateaux de bridage d'une machine a mouler des matieres plastiques, et machine a mouler des matieres plastiques equipee de ce dispositif

Country Status (4)

Country Link
EP (1) EP1453650A1 (fr)
AU (1) AU2002364383A1 (fr)
DE (1) DE10159118A1 (fr)
WO (1) WO2003047835A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420639C1 (de) * 1994-06-14 1995-09-21 Hemscheidt Maschtech Schwerin Holmlose Formschließeinrichtung für Spritzgießmaschinen
US5888560A (en) * 1994-10-14 1999-03-30 Engel Maschinenbau Gesellschaft M.B.H. Injection molding machine with C-shaped frame
US6027329A (en) * 1997-03-15 2000-02-22 Hpm/Stadco, Inc. Platen having internal spring-like characteristics for preventing deformation of mold mounting face during clamping operations

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29724236U1 (de) * 1996-02-09 2000-08-03 Engel Gmbh Maschbau Spritzgiessmaschine
DE29919086U1 (de) * 1999-10-29 2000-06-21 Sayer Richard Lionel Spritzguß- und Druckgußmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420639C1 (de) * 1994-06-14 1995-09-21 Hemscheidt Maschtech Schwerin Holmlose Formschließeinrichtung für Spritzgießmaschinen
US5888560A (en) * 1994-10-14 1999-03-30 Engel Maschinenbau Gesellschaft M.B.H. Injection molding machine with C-shaped frame
US6027329A (en) * 1997-03-15 2000-02-22 Hpm/Stadco, Inc. Platen having internal spring-like characteristics for preventing deformation of mold mounting face during clamping operations

Also Published As

Publication number Publication date
DE10159118A1 (de) 2003-06-18
EP1453650A1 (fr) 2004-09-08
AU2002364383A1 (en) 2003-06-17

Similar Documents

Publication Publication Date Title
DE19501469C2 (de) Holmlose Formschließeinrichtung
DE4434441C2 (de) Vorrichtung zum Herstellen von Hohlkörpern nach dem Innenhochdruckumform-Verfahren
EP0850129B1 (fr) Machine a mouler par injection
EP0687541A1 (fr) Dispositif de fermeture de moule sans colonnes pour presses à injecter
DE102006015855A1 (de) Spannvorrichtung
AT506606B1 (de) Spritzgiesswerkzeug
EP0999926B1 (fr) Presse d'injection sans sommier
DE102006014038B4 (de) Spritzgießmaschine mit einem im Wesentlichen C-förmigen Maschinenrahmen
AT523575B1 (de) Gusswerkzeug-Spannvorrichtung
WO2003047835A1 (fr) Dispositif de fixation pour plateaux de fixation et/ou plateaux de bridage d'une machine a mouler des matieres plastiques, et machine a mouler des matieres plastiques equipee de ce dispositif
EP0585630A1 (fr) Machine à mouler par injection
DE19511808C2 (de) Holmlose Formschließeinrichtung für Spritzgießmaschinen
EP1193090B1 (fr) Tampon de butée
DE102006014039B4 (de) Spritzgießmaschine mit einem im Wesentlichen C-förmigen Maschinenrahmen
EP1291265B1 (fr) Poutre de chassis de véhicule et chassis de véhicule
AT524787B1 (de) Säulenlose Schließeinheit für eine Spritzgießvorrichtung
DE10320820B4 (de) Schwenklagereinrichtung für ein verstellbares Bauteil sowie Verfahren zur Montage einer solchen Schwenklagereinrichtung
DE19962759C1 (de) Zwei-Platten-Spritzgiessmaschine
DE102017112477B3 (de) Spritzgießmaschinen-Schließeinheiten-System
WO2022122661A1 (fr) Système de fixation d'un rail et procédé de réparation
AT403265B (de) Einrichtung zum spritzgiessen von thermoplastischen kunststoffen
EP3024628A1 (fr) Machine de moulage par injection pourvue d'une unité de fermeture
AT408531B (de) Schliesseinheit für eine holmlose spritzgiessmaschine
DE102004038468A1 (de) Spritzgusswerkzeug zur Herstellung von Kunststoffteilen, insbesondere derartiges Werkzeug zum Herstellen von zwei Kunststoffleisten verbindenden Spritzguss-Eckverbindungsteilen
DD143877A1 (de) Verriegelungsvorrichtung fuer randschalungen

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2002799729

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2002799729

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP

WWW Wipo information: withdrawn in national office

Ref document number: 2002799729

Country of ref document: EP