EP0644819B1 - Werkzeug zum isostatischen pressen von henkelgefässen - Google Patents

Werkzeug zum isostatischen pressen von henkelgefässen Download PDF

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Publication number
EP0644819B1
EP0644819B1 EP94913538A EP94913538A EP0644819B1 EP 0644819 B1 EP0644819 B1 EP 0644819B1 EP 94913538 A EP94913538 A EP 94913538A EP 94913538 A EP94913538 A EP 94913538A EP 0644819 B1 EP0644819 B1 EP 0644819B1
Authority
EP
European Patent Office
Prior art keywords
tool
handle
projections
adjusting device
membrane
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 - Lifetime
Application number
EP94913538A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0644819A1 (de
Inventor
Oliver Glanz
Harald Sponsel
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.)
THURINGIA NETZSCH FEINKERAMIK GMBH & CO. KG
Original Assignee
Thuringia Netzsch Feinkeramik & Co KG GmbH
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 Thuringia Netzsch Feinkeramik & Co KG GmbH filed Critical Thuringia Netzsch Feinkeramik & Co KG GmbH
Publication of EP0644819A1 publication Critical patent/EP0644819A1/de
Application granted granted Critical
Publication of EP0644819B1 publication Critical patent/EP0644819B1/de
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/003—Pressing by means acting upon the material via flexible mould wall parts, e.g. by means of inflatable cores, isostatic presses

Definitions

  • the invention relates to a tool for isostatic pressing handle vessels made of powdered or granular material, with one female and one male and one in between one-piece membrane that is complementary to the outside of the vessel and with a radial bulge for each handle has two opposite side parts which projections for forming a grip hole in the handle are.
  • the invention has for its object a tool for isostatic pressing of handle vessels made of powdered or granular, in particular to design ceramic material that those pressed in such a tool, with one or multiple handles with no risk of damage removed and then cleaned with little effort can, which is not significantly greater than the effort that for cleaning the vessels around their mouth in general is required anyway.
  • the task is based on a tool the genus described in the introduction solved in that the side parts the or each radial bulge of the membrane Actuator is assigned, which can be actuated so that the projections formed on the side parts before insertion of the material to be pressed into the tool and during the Pressing process are closely adjacent to each other and after the pressing process are arranged at a distance from each other that is at least is as large as the largest width of the pressed handle.
  • the actuator prevents that between the projections such a large space remains that it is filled of the tool a significant amount of powder or granular Material would penetrate. As a result, remains in the grip hole the or each handle of the pressed vessel in general just a hint of a ridge, in the worst case a thin skin back, which when cleaning the vessel with little Effort can be eliminated.
  • the tool shown in Fig. 1 to 4 has a cup-shaped Lower tool part 10 with fluid channels 12 for introducing a Fluids that are used in isostatic pressing of ceramic Powder or granules usual pressure of for example 280 bar can be set.
  • a die 14 used, one connected to the fluid channels 12 Has cavity 16.
  • the cavity 16 is essentially rotationally symmetrical with respect to an axis A, the corresponds to the opening and closing direction of the tool.
  • a clamping ring extends around the die 14 18, which in the usual way, e.g. with screws on the lower part of the tool 10 is attached and a radially outer edge region a lower membrane 20 made of elastic, rubber-like plastic holds fluid tight.
  • the lower membrane 20 has a rotational symmetry with respect to the axis A.
  • the two radial bulges 24 are symmetrical with respect to a common axis A containing Plane of symmetry B and each have two essentially radial Side parts 26, each with a projection 28 with a flat end face exhibit.
  • the two projections 28 determine together the shape and size of a finger hole of the one in question radial bulge 24 handle to be pressed.
  • a U-shaped is in each of the two radial bulges 24 Stiffening body 30 embedded, a pair to the plane of symmetry B substantially parallel resilient legs 32 and a connecting these legs together, essentially has rigid base part 34.
  • the base part 34 is shown in FIG. 1 to 4 arranged below the radial bulge 24, that is not embedded in the rubbery material from which the Diaphragm 20 and its radial bulges 24 are made in one piece are.
  • Can in any of the radial bulges 24 also a lower stiffener 36 and an outer one Stiffening body 38 may be embedded. All stiffeners 30, 36 and 38 are preferably made of spring steel.
  • the stiffeners 30, 36 and 38 on each of the two in 1 to 4 shown radial bulges 24 of the membrane 20 are components of an actuator 40 that are capable is, the two face each other with their flat faces opposite projections 28 optionally at a distance keep from each other, the larger than the width of a pressed Henkels, or to compress the projections 28 so far, that their end faces lie together seamlessly.
  • 1 to 4 belongs to each actuator 40 a pair of piston-cylinder units 42, which are built into the die 14 and one each Have piston rod 44. Each of these piston rods has 44 a relatively large end face on the outside of the adjacent side part 26 abuts and preferably approximately is as large as the end face of the corresponding projection 28.
  • the piston-cylinder units 42 can each feed a channel 46 with a fluid, the pressure of which is sufficient, around the piston rods 44 lying opposite one another in pairs to be extended until the associated projections 28 lie close together.
  • a pressure chamber 48 is arranged around the piston rods 44, which is independent of the piston-cylinder units 42, however, preferably simultaneously with the cavity 16 below the membrane 20, optionally with a fluid under one for the isostatic presses can set normal pressure or evacuate.
  • the tool shown in FIGS. 1 to 4 also includes Tool upper part 50, which is also fluid channels 52 for a Has suitable Fuid isostatic presses and a male 54 contains, which is covered with an upper membrane 56.
  • the Male 54 has one with respect to axis A. rotationally symmetrical main part on which the upper membrane 56th permanently attached, for example glued or is vulcanized. Radial outside of this body are on the bottom of the upper membrane 56 two diametrically opposite each other opposite support body 58 integrally formed, which at closed tool, as shown especially in Fig. 4, in one of the two radial bulges 24 of the lower one Intervene membrane.
  • the two membranes 20 and 56 delimit a baling chamber 60 which through radial filling channels 62 with ceramic granules can fill. These fill channels 62 - or two of them, if there are more than two - each lead to one of the radial ones Bulges 24.
  • the tool is closed State shown, the membranes 20 and 56 still are not loaded with fluid pressure. In this state they are Filling channels 62 still open to the extent that ceramic Suck granules into the pressing chamber 60 and / or under elevated pressure Let in pressure. Before this happens, the piston-cylinder units 42 of the actuating devices 40 actuated so that the mutually opposite projections 28 are placed firmly against one another will. For this purpose, in the in Fig. 1 to 4 illustrated embodiment, the piston rods 24 extended. Instead or in addition, an appropriate one Effect can be achieved in that the pressure spaces 48 under a moderate one, but not yet for isostatic pressing sufficient pressure.
  • the ceramic granules become as usual compressed in a ratio of approximately 1: 2, so that a handle vessel with one sufficient for removal and further processing Strength arises.
  • the stiffening bodies 30 and, if present, the stiffening body 36 and 38 may be shaped so that in the absence of any hydraulic pressure the protrusions 28 press firmly against each other.
  • the piston-cylinder units 42 arranged so that after pressing the projections 28 in the manner shown in FIGS. 3 and 4 move apart.
  • the piston-cylinder units 42 can also be double acting so that they have both functions of squeezing and pulling apart the protrusions 28.
  • the section of a second shown in FIGS. 5, 5a and 5b Embodiment differs from FIGS. 1 to 4 in that that the actuator 40 radially outside of the illustrated Bulge 24 has an additional cavity 64, which is incorporated into the die 14 and connected to a fluid channel 66 connected.
  • a throttle 68 is installed in the cavity 64, through which is fed to isostatic pressing 5a into a on the radially outer side of the Bulge 24 adjoining room 70 arrives.
  • the one there pressing built-up hydraulic pressure remains after pressing Fig. 5b still partially received for a short time because the fluid can flow out only slowly through the throttle 68.
  • this Time moves the adjusting device 40, as with reference to FIGS. 1 to 4, the projections 28 away from each other so that they detach from the just pressed handle while it is still below that in space 70 radially inwards onto bulge 24 hydraulic residual pressure. It turned out that damage to the handle is particularly effective can be prevented.
  • a corresponding effect can, as shown in FIGS. 6, 6a and 6b, can also be achieved with a hydraulic piston 71, which can be controlled via the fluid channel 66 so that a force acting radially inward on the bulge 24 still acts when the side parts 26 apart be moved.
  • FIGS. 7, 8 and 8a has the peculiarity that the matrix 14 in the plane of symmetry B is divided and the die parts thus formed by means of piston-cylinder units 42 belonging to the adjusting device 40 are movable away from each other transversely to this plane.
  • the bulge 24 of the membrane 20 is extended radially outwards through sections 72 into the outer stiffening body 38 are embedded.
  • the sections 72 lie when pressing one Henkels radially outside of this close to each other, they are connected by a fold 74 so that they are special move easily and far apart, if necessary a hydraulic one acting on the fold Residual pressure the pressed handle radially inwards, towards the body of the handle vessel, loaded. This also makes it easier the handle together with the vessel body with which it is pressed has been removed without damage.
  • the exemplary embodiment according to FIGS. 9 and 10 differs of that shown in Fig. 1 to 4 in that the stiffening body 36 and 38 combined into a common component are, which is adapted to the contour of the handle to be pressed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Press Drives And Press Lines (AREA)
  • Food-Manufacturing Devices (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP94913538A 1993-04-08 1994-04-06 Werkzeug zum isostatischen pressen von henkelgefässen Expired - Lifetime EP0644819B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4311771 1993-04-08
DE4311771A DE4311771A1 (de) 1993-04-08 1993-04-08 Werkzeug zum isostatischen Pressen von Henkelgefäßen
PCT/EP1994/001064 WO1994023917A1 (de) 1993-04-08 1994-04-06 Werkzeug zum isostatischen pressen von henkelgefässen

Publications (2)

Publication Number Publication Date
EP0644819A1 EP0644819A1 (de) 1995-03-29
EP0644819B1 true EP0644819B1 (de) 1998-02-25

Family

ID=6485184

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94913538A Expired - Lifetime EP0644819B1 (de) 1993-04-08 1994-04-06 Werkzeug zum isostatischen pressen von henkelgefässen

Country Status (5)

Country Link
EP (1) EP0644819B1 (ja)
JP (1) JPH08504140A (ja)
CN (1) CN1039393C (ja)
DE (2) DE4311771A1 (ja)
WO (1) WO1994023917A1 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7563403B2 (en) 2004-07-02 2009-07-21 Graham Packaging Pet Technologies, Inc. Method of reheat blow molding a container
US7972129B2 (en) * 2005-09-16 2011-07-05 O'donoghue Joseph Compound tooling system for molding applications
DE102005045976A1 (de) 2005-09-27 2007-03-29 Dorst Technologies Gmbh & Co. Kg Pressenvorrichtung bzw. Pressverfahren zum isostatischen Pressen eines Körpers
FR2980469B1 (fr) * 2011-09-27 2017-12-29 Arc Int France Procede et dispositif de fabrication d'un article en verre pourvu d'une anse
JP6511608B2 (ja) * 2015-05-15 2019-05-15 株式会社神戸製鋼所 等方圧加圧装置、およびそれを用いた加圧処理方法
CN106142641B (zh) * 2016-07-12 2017-12-19 董中天 等静压薄膜袋无应力模具

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3304576A1 (de) * 1983-02-10 1984-08-16 Laeis-Werke Ag, 5500 Trier Verfahren und vorrichtung zum herstellen von tiefen kegeligen oder zylindrischen keramischen hohlkoerpern aus pulverfoermiger oder granulatartiger pressmasse durch isostatisches pressen
DE3626365A1 (de) * 1986-08-04 1988-02-11 Dorst Masch & Anlagen Vorrichtung sowie verfahren zur herstellung von mit einem seitlichen fortsatz versehenen tiefenzylindrischen oder kegeligen formkoerpern, insbesondere henkeltassen
DE4032316C1 (ja) * 1990-10-11 1992-02-13 Erich Netzsch Gmbh & Co Holding Kg, 8672 Selb, De

Also Published As

Publication number Publication date
CN1104409A (zh) 1995-06-28
WO1994023917A1 (de) 1994-10-27
DE4311771A1 (de) 1994-10-13
EP0644819A1 (de) 1995-03-29
CN1039393C (zh) 1998-08-05
JPH08504140A (ja) 1996-05-07
DE59405294D1 (de) 1998-04-02

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