WO2016096098A1 - Dispositif de transport de métal fondu dans une unité de pression d'injection - Google Patents

Dispositif de transport de métal fondu dans une unité de pression d'injection Download PDF

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Publication number
WO2016096098A1
WO2016096098A1 PCT/EP2015/002433 EP2015002433W WO2016096098A1 WO 2016096098 A1 WO2016096098 A1 WO 2016096098A1 EP 2015002433 W EP2015002433 W EP 2015002433W WO 2016096098 A1 WO2016096098 A1 WO 2016096098A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
molten metal
cylinder bore
spacers
conveying device
Prior art date
Application number
PCT/EP2015/002433
Other languages
German (de)
English (en)
Inventor
Ingo Brexeler
Original Assignee
Gebr. Krallmann 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 Gebr. Krallmann Gmbh filed Critical Gebr. Krallmann Gmbh
Priority to EP15817065.4A priority Critical patent/EP3233330B1/fr
Publication of WO2016096098A1 publication Critical patent/WO2016096098A1/fr

Links

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
    • B22D17/02—Hot chamber machines, i.e. with heated press chamber in which metal is melted
    • B22D17/04—Plunger machines
    • 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
    • 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
    • B22D17/30—Accessories for supplying molten metal, e.g. in rations
    • 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
    • B22D17/32—Controlling equipment

Definitions

  • the invention relates to a conveying device for a molten metal in an injection pressure unit, with a reservoir for the molten metal and a conveying channel, in which the molten metal a mold cavity
  • the conveying channel comprises a cylinder bore in which a piston axially with a maximum stroke, which is defined between a 1st position and a 2nd position, is arranged adjustable, and wherein in the cylinder bore a collecting chamber for the Molten metal is provided, from which the molten metal due to an axial
  • Displacement of the piston can be introduced through a further line in the mold cavity.
  • a liquid metal which is usually a metal alloy, is introduced into a mold cavity and cures therein, so that a metallic component corresponding to the mold cavity is formed.
  • the introduction of the molten metal takes place under a pressure under which the molten metal is set.
  • a conveying device for a molten metal in which the molten metal from a reservoir in a cylinder bore formed cylinder bore is supplied, whereafter a piston is axially displaced in the cylinder bore, where ⁇ seizedge ⁇ suppressed by the molten metal from the cylinder bore, and reaches a further line in which it is supplied to the mold cavity.
  • the piston can be adjusted between a first position, in which it is pulled out of the cylinder bore as far as possible, and a second position, in which it as far as possible in the cylinder bore.
  • Eintex Between the 1st positino and the 2nd position, the maximum stroke of the piston is thus defined.
  • the piston is arranged vertically, so that the 1st position, the upper position of the piston and the 2nd position, the lower
  • Position of the piston is what is turned off in the following, however, the invention is not limited to the vertical orientation of the piston.
  • the collection chamber When the piston is in its 1st upper position, the collection chamber is filled with the molten metal, whereupon the piston moves to its 2nd lower position, thereby at least partially expelling the molten metal from the collection chamber.
  • the amount of molten metal displaced and delivered with one piston stroke, i. the dosing volume, thus depends on the size of the piston stroke.
  • the invention has for its object to provide a conveying device for a molten metal in an injection pressure unit, wherein the metering volume in
  • a conveying device for a molten metal in a spray pressure unit with the features of claim 1.
  • an adjusting device is provided, by means of which the maximum stroke of the piston is variable.
  • the first upper position of the piston is changed by means of the adjusting device, in which this
  • the piston is preferably located in its first upper position either directly or indirectly via a component attached to it on a stop element and the adjustment device comprises exchangeable spacers which on the stop element facing the end of the piston or the component and / or directly on Stop element can be attached.
  • the spacers are placed in an exchangeable manner on a projection which is formed at the end of the piston remote from the collecting chamber or the component attached to it. The spacers can be held on the approach either positive and / or non-positive, for example by detent.
  • the spacers are configured as U-shaped or horseshoe-shaped discs and laterally placed on the approach. Due to the size and number of spacers, a user can adjust in which axial position the piston is limited by the stop element in a further out of the collection chamber movement. It has been shown that in this way a very fine adjustment or adaptation of the metering volume can be achieved.
  • Fig. 1 is a longitudinal section through an inventive
  • FIG. 4 perspective views of spacers.
  • a conveying device 10 for a molten metal M in an injection-pressure unit shown in FIG. 1 has a housing 11 in which a vertical receiving bore 12 is formed.
  • a reservoir 26 is provided, which is filled with the molten metal M.
  • the molten metal M can be supplied in liquid form to the reservoir 26 or can be produced in it by melting, for example, a metal granulate.
  • the reservoir 26 is airtightly covered by a cover member 45 and formed above the molten metal M in the reservoir 26 space 46 is filled with an inert gas, such as carbon dioxide (C0 2 ) or nitrogen (N 2 ).
  • an inert gas such as carbon dioxide (C0 2 ) or nitrogen (N 2 ).
  • a second heater 43 is integrated in the region of the reservoir 26, which may be an electrical resistance heater, with which the wall of the reservoir 26 and thus the molten metal M are brought to a desired temperature or held on this can.
  • the reservoir 26 is connected via at least one obliquely downward in the flow direction inclined
  • a fitting 28 is inserted with close fit, which has a tubular configuration and is closed at its lower end.
  • the fitting 28 is replaceable in the receiving bore 12th held and has a central axial cylinder bore 27 which is configured in the form of an upwardly opening blind bore.
  • an obliquely extending connecting bore 30 is provided, which is aligned with the inlet channel 18 and this with the
  • Cylinder bore 27 connects.
  • a piston 13 is slidably inserted under close fit.
  • a piston 13 is slidably inserted under close fit.
  • an annular space 17 is formed on the outside of the piston 13.
  • the region of the piston 13 in which the filling bores 16 are formed lies in a sealed manner the inner wall of the
  • the piston rings 31 consist for example of a spring steel.
  • the piston 13 further has a central axial bore 14, in which a valve rod 19 is slidably disposed, which completely penetrates the piston 13 and at its lower end downstream of the end face of the
  • Piston 13 carries a plate-like valve body 20.
  • Valve body 20 can be adjusted by moving the valve rod 19 relative to the piston 13 between a closed position shown in Figure 1, in which the valve body 20 prevents leakage of molten metal from the filling holes 16, and an open position, not shown, in which the molten metal from the filling ⁇ holes in an underlying, formed in the cylinder bore 27 collecting chamber 15 can flow.
  • the cross section of the valve body 20 is smaller than the cross section of the cylinder bore 27, so that the valve body 20 within the cylinder bore 27 has a sealing function and the molten metal M, the valve body 20 can flow freely.
  • the piston 13 is fixedly connected at its upper end with a transverse plate 54, on the upper side of a component 55 is mounted, which protrudes upwards. Above the component 55, a fixed stop element 51 is arranged. The piston 13 is in its 1st upper position via the component 55 connected to it on the underside of the stop element 51 and can be moved axially out of this position.
  • Figure 2 shows a first upper position of the piston 13, in which the component 55 rests with its upper side on the stop member 51. As shown in FIG. 2, the component 55 has on its upper side a stepped shoulder 53 of reduced diameter, which in the position shown in FIG.
  • Stop element 51 is immersed and therefore only shown in dashed lines.
  • a user can slide a spacer 52 laterally if necessary.
  • Corresponding spacers 52 and 52a are shown in FIG.
  • the spacers 52, 52a are configured as U-shaped or horseshoe-shaped discs, which have different heights, so that the user can place a single spacer or a stack of spacers laterally on the projection 53, wherein the spacers 52, 52a on the approach 53 are held positively and / or non-positively.
  • the spacers 52, 52a can be adjusted by the user, in which axial position the piston rests against the stop element 51. In this way, the first upper position of the piston 13 and thereby the maximum stroke as well as the metering volume of the piston can be adjusted and changed, as shown in FIG.
  • the cylinder bore 27 or the collection chamber 15 formed in its lower region is connected at the lower end via a further line 21 to a mold cavity (not shown in greater detail).
  • the continuing line 21 comprises a lower transverse bore 32 in the wall of the fitting 28, which is aligned with a further transverse bore 33 in the housing 21, via which the collecting chamber 15 is connected to a vertical riser 22.
  • the riser 22 passes at its upper end in a filling channel 23, from which the molten metal is supplied to the mold space, as indicated by the arrow F.
  • a check valve 24 is arranged, which has a valve body 25 which is tensioned by a spring 34 against the flow direction against a valve seat 35.
  • the cylinder bore 27 and the fitting piece 28 are surrounded by a first heater 36, which has a plurality of distributed over the circumference of the fitting piece 28 arranged heating elements 37, each formed in a housing
  • FIG. 1 The arrangement of the heating elements 37, which are preferably electrical heating cartridges, is shown in FIG. From this it is clear ⁇ that six heating elements 37 are provided, which are distributed uniformly over the circumference of the fitting piece 28 and preferably in each case individually or can be driven in groups. With the help of the heating device 36, it is possible, the molten metal M in the field of Ver ⁇ binding hole 30, the filling holes 16, the collecting chambers 15 and at least partially in the continuing
  • the return check valve 24 is associated with a third heater 44, with the molten metal, which flows through the check valve 24, in particular within the check valve 24 is tempered.
  • the third heating device 44 may be formed by an electrical resistance heating or heating channels, which are flowed through by a hot fluid and in particular a hot liquid.
  • the collecting chamber 15 facing away from the end of the piston 13 and the valve rod 19 is arranged in a outside of the housing 11 arranged drive and control housing 47, in which an only indicated drive device 38 for the piston 13 and also also only indicated
  • Valve rod driving device 41 are arranged, with those of the piston 13 and the valve rod 19 axially
  • an electronic Steuerervor ⁇ direction 48 is provided in particular for the said drive devices, which is indicated only schematically.
  • the drive and control housing 47 has on its side facing the housing 11 a partition wall 40 which is penetrated by the piston 13 and the valve rod 19 under close fit and which serves as a thermal shield.
  • a cooling device 39 which comprises a plurality of cooling channels 42, which are flowed through by a cooling liquid and extend through both the drive and control housing 47 and through the partition 40.
  • the cooling device 39 it is possible to keep the interior of the drive and control housing 47 and thus the drive device 38 for the piston 13, the valve-rod drive device 41 and the electronic control device 48 to an advantageous operating temperature of preferably ⁇ 80 ° C, since due to Heater 36 there is a risk that the components mentioned otherwise become too hot and damaged.

Landscapes

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

Abstract

L'invention concerne un dispositif de transport d'un métal fondu dans une unité de pression d'injection, par exemple une machine de coulée de métal, qui comporte un réservoir destiné au métal fondu et un conduit de transport dans lequel le métal fondu est amené à une cavité du moule. Le conduit de transport comprend un perçage cylindrique dans lequel un piston, dont la course maximale est définie entre une première position et une seconde position, est disposé de façon déplaçable axialement. Dans le perçage cylindrique est prévue une chambre de collecte du métal fondu à partir de laquelle le métal fondu peut être introduit, à la suite d'un déplacement axial du piston, dans la cavité du moule à travers un autre conduit. Selon l'invention, un dispositif de réglage est prévu au moyen duquel la course maximale du piston peut être modifiée.
PCT/EP2015/002433 2014-12-19 2015-12-03 Dispositif de transport de métal fondu dans une unité de pression d'injection WO2016096098A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15817065.4A EP3233330B1 (fr) 2014-12-19 2015-12-03 Dispositif de transport de métal fondu dans une unité de pression d'injection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014018797.7 2014-12-19
DE102014018797.7A DE102014018797A1 (de) 2014-12-19 2014-12-19 Fördervorrichtung für eine Metallschmelze in einem Spritzdruckaggregat

Publications (1)

Publication Number Publication Date
WO2016096098A1 true WO2016096098A1 (fr) 2016-06-23

Family

ID=55027687

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/002433 WO2016096098A1 (fr) 2014-12-19 2015-12-03 Dispositif de transport de métal fondu dans une unité de pression d'injection

Country Status (3)

Country Link
EP (1) EP3233330B1 (fr)
DE (1) DE102014018797A1 (fr)
WO (1) WO2016096098A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6282159U (fr) * 1985-11-07 1987-05-26
DE19807567A1 (de) * 1997-02-25 1998-08-27 Ykk Corp Druckgußmaschine und Druckgußverfahren
DE102012010923A1 (de) 2012-06-04 2013-12-05 Gebr. Krallmann Gmbh Fördervorrichtung für eine Metallschmelze in einem Spritzdruckaggregat

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632321A (en) * 1996-02-23 1997-05-27 Prince Machine Corporation Die casting machine with compound docking/shot cylinder
WO2002085560A1 (fr) * 2001-04-19 2002-10-31 Alcoa Inc. Injecteur pour systeme d'alimentation en metal en fusion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6282159U (fr) * 1985-11-07 1987-05-26
DE19807567A1 (de) * 1997-02-25 1998-08-27 Ykk Corp Druckgußmaschine und Druckgußverfahren
DE102012010923A1 (de) 2012-06-04 2013-12-05 Gebr. Krallmann Gmbh Fördervorrichtung für eine Metallschmelze in einem Spritzdruckaggregat

Also Published As

Publication number Publication date
EP3233330B1 (fr) 2019-07-31
DE102014018797A1 (de) 2016-06-23
EP3233330A1 (fr) 2017-10-25

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