EP1336445A1 - Machine à couler sous pression et procédé de lubrification du piston d'injection - Google Patents

Machine à couler sous pression et procédé de lubrification du piston d'injection Download PDF

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Publication number
EP1336445A1
EP1336445A1 EP02405125A EP02405125A EP1336445A1 EP 1336445 A1 EP1336445 A1 EP 1336445A1 EP 02405125 A EP02405125 A EP 02405125A EP 02405125 A EP02405125 A EP 02405125A EP 1336445 A1 EP1336445 A1 EP 1336445A1
Authority
EP
European Patent Office
Prior art keywords
filling chamber
piston
casting machine
release agent
nozzle
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.)
Withdrawn
Application number
EP02405125A
Other languages
German (de)
English (en)
Inventor
Georg Plötz
Johann Fakler
Elizabeth Wenzel
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management 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 Alcan Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP02405125A priority Critical patent/EP1336445A1/fr
Priority to PCT/EP2003/001001 priority patent/WO2003070400A1/fr
Priority to JP2003569347A priority patent/JP4163627B2/ja
Priority to EP03706409A priority patent/EP1478480B1/fr
Priority to AU2003208363A priority patent/AU2003208363A1/en
Priority to US10/504,904 priority patent/US7040375B2/en
Priority to DE50301263T priority patent/DE50301263D1/de
Priority to CA002473049A priority patent/CA2473049C/fr
Priority to AT03706409T priority patent/ATE305350T1/de
Publication of EP1336445A1 publication Critical patent/EP1336445A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2038—Heating, cooling or lubricating the injection unit

Definitions

  • the invention relates to a die casting machine with a movable and a fixed mold half, which in the closed position delimit a mold cavity, a filling chamber for holding liquid metal, one in the Filling chamber slidable piston on a piston rod for ejecting the liquid metal from the filling chamber and shooting in in the mold cavity, and a device for supplying lubricant for the piston into the filling chamber.
  • the invention further relates to a method for lubricating the piston in the filling chamber of a die casting machine.
  • liquid metal is dosed into the filling chamber, with the piston ejected from the filling chamber and into the mold cavity injected.
  • the hot cylindrical ones The inner wall of the filling chamber has sliding pistons or their piston rings high Exposed to stress. Lubrication of the piston is therefore essential.
  • Today's pistons are made of a Cu-Be alloy or steel. Piston greases and oils as well as granules or pellets are used as lubricants for use. Graphite-free or graphite-containing piston oils are dripped or Spray lubrication applied. The application occurs with drip lubrication the piston while it is at the beginning of its stroke. In the Spray lubrication is also at the beginning of the stroke of the piston, and spraying takes place through the metal filler opening, i.e. in front of the piston.
  • the invention is based on a first object, a die casting machine type mentioned in such a way that a piston lubricant is optimally applied to the piston and the inner wall of the filling chamber.
  • a second object of the invention is to provide an improved one Lubrication process in a die casting machine of the type mentioned with an environmentally friendly lubricant.
  • the procedure should at least achieve the lubricating properties of mineral oil-based lubricants.
  • the solution according to the invention is provided by Task that with at least one pipe or nozzle on the stamp rod an opening directed against the piston is defined, and the pipe or the nozzle via a supply line with a reservoir for the lubricant connected is.
  • the lubricant can be easily applied to the piston and the inner wall be applied to the filling chamber.
  • the pipe or nozzle is therefore preferred made of thin metal tube or plastic.
  • the pipe or the nozzle With a small distance between the stamp rod and the inner wall of the Filling chamber can prove to be useful, the pipe or the nozzle and if necessary to arrange part of the supply line in a longitudinal groove in the stamp rod.
  • the pipe or the nozzle can be fastened to the stamp rod by means of at least one fastening element, which should also have the lowest possible mass.
  • Possible fastening elements are, for example, plastic straps such as, for example, cable ties, or pipe clips made of plastic or metal.
  • the mold release agent is preferably a polyethylene primary dispersion anionic and nonionic emulsifiers, known under the trade name HORDAMER PE 34.
  • the mold release agent waxes like Contain polyethylene wax and / or oils such as silicone oil.
  • composition of the mold release agent is expediently so chosen so that a foam forms in the filling chamber when sprayed. This leads to optimal wetting of the piston, possibly the piston rings and the Inner wall of the filling chamber. The excess water / release agent mixture is removed from the filling chamber when the piston moves back.
  • the mold release agent sprayed into the filling chamber advantageously contains 0.5 to 5% by weight solids, preferably 1 to 2% by weight solids, and water as the rest.
  • a die casting machine 10 shown in FIG. 1 for die casting for example Aluminum alloys each have one on a solid machine plate 12a and fixed on a movable machine plate 12b Mold half 14 and movable mold half 16, which in the closed position define a mold cavity 18. Extends into the fixed mold half 14 a filling chamber 20 in which a piston 22 is slidably disposed.
  • the Filling chamber 20 is an opening 24 by hand or automatically with liquid metal fillable.
  • the mold cavity 18 is on the side of the filling chamber 20 from a mold gate 28 and on the opposite side from a vacuum run or Mold exit channel 26 limited.
  • the mold cavity 18 is above the mold exit channel 26 with a vacuum valve 30 in connection, which in turn via a suction channel 32 and via one connected to the suction channel 32 Lock valve 33 is connected to a vacuum container 34.
  • the vacuum container 34 is evacuated by means of a vacuum pump 36.
  • the piston 22 sits on a plunger rod 38 which is operated by means of a hydraulic cylinder 40 is actuated axially in both directions.
  • the piston 22 consists, for example, of a Cu-Be alloy and can also be used Piston rings 42 can be fitted.
  • the filling chamber 20 usually consists of Steel.
  • a piece of pipe 44 is on the plunger rod 38, for example in in the form of a thin metal tube or made of plastic.
  • the attachment takes place via plastic tapes 46, for example in the form of cable ties, or via pipe clamps.
  • a flexible line 48 for example a Plastic tubing or a flexible metal tube connects tube 44 to one Storage vessel 52 for a release agent 54.
  • a Pressure booster 50 switched.
  • Fig. 2 shows the position of the piston at its stroke end in the area of the shaped gate 28, i.e. after the liquid metal has been shot into the Mold cavity 18.
  • the release agent / water mixture 54 from the opening 45 directed against the piston 22 of the pipe section 44 inside of the space between the punch rod 38 and the inner wall of the Filling chamber 20 sprayed against the piston 22.
  • the stamp rod 38 with the spray device and the piston 22 fastened thereon retracted in preparation for the next shot until the plunger 22 comes on stands at the beginning of its stroke.
  • there is excess Release agent / water mixture by means of the piston 22 through the open Ejected end of the filling chamber 20.
  • On the inside wall of the filling chamber 20 thus remains a thinner after the remaining water has evaporated Release agent film.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Lubricants (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Actuator (AREA)
  • Casting Devices For Molds (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Mold Materials And Core Materials (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
EP02405125A 2002-02-19 2002-02-19 Machine à couler sous pression et procédé de lubrification du piston d'injection Withdrawn EP1336445A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP02405125A EP1336445A1 (fr) 2002-02-19 2002-02-19 Machine à couler sous pression et procédé de lubrification du piston d'injection
PCT/EP2003/001001 WO2003070400A1 (fr) 2002-02-19 2003-02-01 Machine a coulee sous pression et procede de lubrification de piston
JP2003569347A JP4163627B2 (ja) 2002-02-19 2003-02-01 ダイキャスティング装置及びピストン潤滑方法
EP03706409A EP1478480B1 (fr) 2002-02-19 2003-02-01 Procede de lubrification de piston d'une machine a coulee sous pression
AU2003208363A AU2003208363A1 (en) 2002-02-19 2003-02-01 Diecasting machine and plunger lubricating method
US10/504,904 US7040375B2 (en) 2002-02-19 2003-02-01 Diecasting machine and plunger lubricating method
DE50301263T DE50301263D1 (de) 2002-02-19 2003-02-01 Verfahren zur kolbenschmierung einer druckgiessmaschine
CA002473049A CA2473049C (fr) 2002-02-19 2003-02-01 Machine a coulee sous pression et procede de lubrification de piston
AT03706409T ATE305350T1 (de) 2002-02-19 2003-02-01 Verfahren zur kolbenschmierung einer druckgiessmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02405125A EP1336445A1 (fr) 2002-02-19 2002-02-19 Machine à couler sous pression et procédé de lubrification du piston d'injection

Publications (1)

Publication Number Publication Date
EP1336445A1 true EP1336445A1 (fr) 2003-08-20

Family

ID=27619208

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02405125A Withdrawn EP1336445A1 (fr) 2002-02-19 2002-02-19 Machine à couler sous pression et procédé de lubrification du piston d'injection
EP03706409A Expired - Lifetime EP1478480B1 (fr) 2002-02-19 2003-02-01 Procede de lubrification de piston d'une machine a coulee sous pression

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03706409A Expired - Lifetime EP1478480B1 (fr) 2002-02-19 2003-02-01 Procede de lubrification de piston d'une machine a coulee sous pression

Country Status (8)

Country Link
US (1) US7040375B2 (fr)
EP (2) EP1336445A1 (fr)
JP (1) JP4163627B2 (fr)
AT (1) ATE305350T1 (fr)
AU (1) AU2003208363A1 (fr)
CA (1) CA2473049C (fr)
DE (1) DE50301263D1 (fr)
WO (1) WO2003070400A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2628504C (fr) 2007-04-06 2015-05-26 Ashley Stone Dispositif de coulage
JP5045203B2 (ja) * 2007-04-23 2012-10-10 宇部興産機械株式会社 ダイカストマシン
US8167490B2 (en) 2009-04-22 2012-05-01 Reynolds Consumer Products Inc. Multilayer stretchy drawstring
KR101693645B1 (ko) * 2015-02-23 2017-01-06 서용석 인서터형 다이케스팅용 슬리브

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61103642A (ja) * 1984-10-29 1986-05-22 Yushiro Do Brazil Ind Chem Ltd 水溶性ダイカスト用離型剤
US5154839A (en) * 1991-01-17 1992-10-13 Hanano Commercial Co., Ltd Powder lubricant for plunger device
JPH06142877A (ja) * 1992-11-12 1994-05-24 Toshiba Mach Co Ltd ダイカストマシンのプランジャ潤滑方法
US5370171A (en) * 1989-03-07 1994-12-06 Aluminum Company Of America Die-casting process and equipment
JP2001071092A (ja) * 1999-09-02 2001-03-21 Hanano Shoji Kk 水溶性離型剤
EP1134278A1 (fr) * 2000-03-17 2001-09-19 Nicca Chemical Co., Ltd. Agents de démoulage aqueux pour le moulage par injection à vitesse reduite

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683060A (en) * 1953-04-24 1954-07-06 Sprayers & Nozzles Inc Sprayer and sprayer pump
US4257902A (en) * 1976-08-04 1981-03-24 Singer & Hersch Industrial Development (Pty.) Ltd. Water-based industrial fluids
US5028366A (en) * 1988-01-12 1991-07-02 Air Products And Chemicals, Inc. Water based mold release compositions for making molded polyurethane foam
JP2972824B2 (ja) * 1990-11-16 1999-11-08 株式会社ネオス 水性離型剤
US6237672B1 (en) * 1998-12-30 2001-05-29 Dbm Industries, Ltd. Self lubricating and cleaning injection piston for cold chamber injection unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61103642A (ja) * 1984-10-29 1986-05-22 Yushiro Do Brazil Ind Chem Ltd 水溶性ダイカスト用離型剤
US5370171A (en) * 1989-03-07 1994-12-06 Aluminum Company Of America Die-casting process and equipment
US5154839A (en) * 1991-01-17 1992-10-13 Hanano Commercial Co., Ltd Powder lubricant for plunger device
JPH06142877A (ja) * 1992-11-12 1994-05-24 Toshiba Mach Co Ltd ダイカストマシンのプランジャ潤滑方法
JP2001071092A (ja) * 1999-09-02 2001-03-21 Hanano Shoji Kk 水溶性離型剤
EP1134278A1 (fr) * 2000-03-17 2001-09-19 Nicca Chemical Co., Ltd. Agents de démoulage aqueux pour le moulage par injection à vitesse reduite

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 198627, Derwent World Patents Index; Class A82, AN 1986-172109, XP002204507 *
DATABASE WPI Section Ch Week 200133, Derwent World Patents Index; Class M22, AN 2001-310849, XP002204506 *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 449 (M - 1660) 22 August 1994 (1994-08-22) *

Also Published As

Publication number Publication date
CA2473049C (fr) 2008-06-17
EP1478480B1 (fr) 2005-09-28
JP4163627B2 (ja) 2008-10-08
ATE305350T1 (de) 2005-10-15
DE50301263D1 (de) 2005-11-03
CA2473049A1 (fr) 2003-08-28
US7040375B2 (en) 2006-05-09
EP1478480A1 (fr) 2004-11-24
JP2006503708A (ja) 2006-02-02
WO2003070400A1 (fr) 2003-08-28
US20050167070A1 (en) 2005-08-04
AU2003208363A1 (en) 2003-09-09

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