EP4327961A1 - Vorrichtung zum aufbringen von kraft auf ein metallbauteil in einer gussform, verfahren und verwendung einer vorrichtung - Google Patents

Vorrichtung zum aufbringen von kraft auf ein metallbauteil in einer gussform, verfahren und verwendung einer vorrichtung Download PDF

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Publication number
EP4327961A1
EP4327961A1 EP22191411.2A EP22191411A EP4327961A1 EP 4327961 A1 EP4327961 A1 EP 4327961A1 EP 22191411 A EP22191411 A EP 22191411A EP 4327961 A1 EP4327961 A1 EP 4327961A1
Authority
EP
European Patent Office
Prior art keywords
squeeze
cooling
arrangement
metal component
casting mold
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.)
Pending
Application number
EP22191411.2A
Other languages
English (en)
French (fr)
Inventor
Ahmet Hakan Nacar
Ferhat Güzelirmak
Dogan Yalçin
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.)
Nemak SAB de CV
Original Assignee
Nemak SAB de CV
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 Nemak SAB de CV filed Critical Nemak SAB de CV
Priority to EP22191411.2A priority Critical patent/EP4327961A1/de
Publication of EP4327961A1 publication Critical patent/EP4327961A1/de
Pending 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
    • B22D17/2069—Exerting after-pressure on the moulding material
    • 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
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • 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
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2218—Cooling or heating equipment for dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
    • B22D27/11—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of mechanical pressing devices

Definitions

  • the present invention relates to an apparatus for applying a force to a metal component in a casting mold.
  • the present invention also relates to a use of such an apparatus and a method for applying force to a metal component in a casting mold.
  • squeeze pins regularly may cause several problems during high pressure die casting, which is why a sufficient prevention of air-inclusions in certain areas of the melt and/or the cast metal component sometimes may not be reliably provided.
  • the squeeze pins may overheat due to friction and get jammed due to the high temperature of the melt and/or the cast metal component.
  • the tolerance area of the squeeze pins may increase due to such high temperatures, wherein air-inclusions may not be reliably prevented anymore. High temperatures may also cause a deformation of guiding sleeves of the squeeze pins and the overall maintenance time of the apparatus may be increased.
  • the present invention is faced with the problem of suggesting an apparatus which allows for improving the mechanical properties of a metal component, in particular of a metal component cast with high pressure die casting. Further, a corresponding method and an advantageous use shall be suggested.
  • an apparatus for applying a force to a metal component, in particular to a melt, in a casting mold comprising a squeeze arrangement comprising at least one squeeze pin; a cooling arrangement for at least partly cooling the squeeze arrangement and/or the metal component; wherein the at least one squeeze pin is at least in part movable in a squeeze direction for applying the force to the metal component in the casting mold.
  • a method for applying a force to a metal component in a casting mold comprising: at least in part moving a squeeze arrangement in a squeeze direction for applying the force to the metal component; and at least in part circulating cooling fluid through cooling means of a cooling arrangement for at least partly cooling the at least one squeeze pin and/or the metal component; wherein the cooling fluid is, preferably, circulated through the cooling means via jet cooling and/or fountain cooling.
  • an apparatus according to the invention for applying force to a metal component, in particular an engine cylinder block in a casting mold, in particular for squeezing a bearing area of the engine cylinder block, while at least partly cooling a squeeze arrangement and or at least one area of the engine cylinder block.
  • a cooling arrangement for at least partly cooling the squeeze arrangement may allow for a reduction of overheating and jamming of the at least one squeeze pin and therefore may stabilize the tolerance area of the at least one squeeze pin.
  • the creation of air-inclusions during solidification of the metal may at least partly be sufficiently prevented.
  • the deformation of at least one guiding sleeve of the at least one squeeze pin may be at least partly prevented and the overall maintenance time of the apparatus may be decreased.
  • an indirect cooling of the cast metal component may be provided which may lead to an increased quality of the cast metal component and may reduce the shrinkage porosity due to the additional prevention of air-inclusions.
  • the lifetime of the cast mold may be increased so that less spare parts are needed for the apparatus.
  • the casting method used may in particular be pressure casting or high pressure die casting (HPDC).
  • the apparatus may be a high pressure die casting apparatus or a part thereof and the casting mold used may be a die-cast suitable for high pressure die casting.
  • the force is in particular applied to the metal component at least for a certain time during solidification of the metal.
  • the force may be kept applied until the solidification of the metal is completed.
  • the cooling is applied to the squeeze arrangement via the cooling arrangement at least for a certain time during solidification of the metal.
  • the cooling may be kept applied until the solidification of the metal is completed.
  • the term metal component is understood to cover the state from molten metal to completely solidified metal in the casting mold.
  • the metal may be aluminum or an aluminum alloy.
  • the metal component may in particular be an engine cylinder block.
  • the force applied to the metal component may in that case in particular be applied to a bearing area of the engine cylinder block.
  • the squeeze arrangement may be exclusively movable in the squeeze direction.
  • the respective movement may be a translational or linear movement.
  • the movement may be an axial movement along an axis of the respective arrangement (such as a piston rod axis or a pin axis). That an arrangement may only in part be movable in a respective direction is understood to mean that the respective arrangement may comprise parts which are fixed or not movable.
  • the squeeze arrangement comprises parts, such as e.g. one or more squeeze pins moving in the squeeze direction, but may also comprise parts, such as e.g. guides or sleeves, which may not necessarily move in the squeeze direction.
  • the exemplary method may further comprise steps before and after the application of a squeeze force to the metal component and a cooling of the squeeze arrangement.
  • the exemplary method may further comprise the action of pressure injecting metal into the casting mold.
  • the exemplary method may further comprise the action of removing the metal component from the casting mold after solidification of the metal.
  • the method may in particular be performed by an apparatus according to the invention.
  • the cooling arrangement comprises cooling means for at least partly cooling the at least one squeeze pin of the squeeze arrangement. Via the at least one cooling means a substantially sufficient cooling of the at least one squeeze pin of the squeeze arrangement may be supplied. Additionally, the cooling means are preferably arranged in such a way that they may also cool the metal component in the casting mold, whereby the porosity of the metal component may be further decreased.
  • the cooling means are arranged at least partly integrally and/or at least partly inside the at least one squeeze pin. This may allow for an efficient cooling of the at least one squeeze pin. Additionally, since the at least one squeeze pin is at least in part movable in the squeeze direction, an arrangement at least partly integrally and/or at least partly inside the at least one squeeze pin may be beneficial from a constructive perspective. Preferably, the cooling means at least in part also are movable in the squeeze direction. The cooling means may also be part of the squeeze arrangement and/or a drive arrangement.
  • the cooling means comprises at least one substantially longitudinal cooling channel, wherein, preferably, the at least one substantially longitudinal cooling channel is coupled with at least one connection means, preferably at least one inlet connection and at least one outlet connection, for supplying the at least one cooling channel with a cooling fluid.
  • a cooling channel may be provided which enables an effective cooling over substantially the whole length of the at least one squeeze pin.
  • the at least one substantially longitudinal cooling channel extends substantially in the longitudinal direction of the at least one squeeze pin. It is preferred that the at least one substantially longitudinal cooling channel and the at least one squeeze pin extend substantially in the squeeze direction.
  • the at least one inlet connection and the at least one outlet connection are substantially bordering each other and are arranged at the distal end of the tip of the at least one squeeze pin.
  • the cooling means comprises at least one inlet channel and at least one outlet channel. This allows for an effective circulation of a cooling fluid supplied to the at least one inlet channel towards the at least one outlet channel.
  • an effective cooling over the substantially whole length of the at least one squeeze pin may be provided.
  • the at least one inlet channel and the at least one outlet channel are fluidly connected to each other.
  • advantageous cooling may be provided when the cooling means comprises at least one inlet channel and at least two outlet channels fluidly connected to the at least one inlet channel.
  • the inner diameter of the at least one inlet channel and/or the at least one outlet channel may vary over the longitudinal extension of the respective channels and/or the squeeze pin in the squeeze direction.
  • the at least one inlet channel and the at least one outlet channel are separated from each other by at least one separating member, wherein the at least one separating member comprises at least one opening or at least one gap for fluidly connecting the at least one inlet channel to the at least one outlet channel.
  • the at least one inlet channel and the at least one outlet channel may be separated from each other over substantially the whole length of the at least one squeeze pin in a constructively convenient manner.
  • the cooling means comprises at least one inlet channel and at least two outlet channels, wherein the two outlet channels are separated by one separating member respectively.
  • the separating member(s) may comprise(s) at least one gap or at least one opening. This allows for a sufficient circulation of a cooling fluid inside the cooling means and therefore providing a preferable cooling performance.
  • the at least one separating member may be formed integrally with the at least one squeeze pin.
  • the at least one opening or the at least one gap is arranged in a tip area of the at least one squeeze pin.
  • This allows for an efficient cooling of the at least one squeeze pin over substantially the whole length of the squeeze pin.
  • an advantageous circulation of the cooling fluid may be enabled.
  • at least two opening or at least two gaps are arranged in at least two separating member, i.e. at least one opening or at least one gap in one separating member respectively.
  • the tip area of the at least one squeeze pin preferably is an area located at the end of the squeeze pin which applies a force to the metal component in the casting mold.
  • the tip area is arranged on substantially opposite ends of the at least one squeeze pin with regard to the at least one inlet connection and the at least one outlet connection.
  • the at least one inlet channel and the at least one outlet channel are substantially longitudinal, and preferably, the at least one inlet channel and the at least one outlet channel substantially extend in the squeeze direction, which allows for an advantageous circulation of a cooling fluid circulating inside the at least one inlet channel and the at least one outlet channel.
  • the cooling means comprises at least one inlet channel and at least two outlet channels, wherein the at least two outlet channels are bordering the at least one inlet channel.
  • the at least one inlet channel and the at least two outlet channels are at least substantially longitudinal and substantially parallel to each other.
  • the at least two outlet channels may be separated from the at least one inlet channel via a separating member respectively.
  • the squeeze arrangement comprises at least one sealing means for preventing the metal component in the casting mold from flowing into the squeeze arrangement and/or the drive arrangement.
  • the sealing means may comprise at least one sleeve which in particular seals the tip area of the at least one squeeze pin with regard to the metal component.
  • the at least one sealing means does not move into the squeeze direction and is connected to a main body of the apparatus.
  • the apparatus further comprises a drive arrangement for mechanically transferring a force to the squeeze arrangement; wherein the drive arrangement comprises a cylinder, in particular a hydraulic cylinder; and wherein the cooling arrangement is preferably arranged at least partly integrally and/or at least partly inside the cylinder.
  • the drive arrangement may further comprise a piston and/or a piston rod.
  • the cylinder may move in a drive direction.
  • the cylinder may not move in the drive direction, but may also serves for driving a piston or piston rod in the drive direction.
  • the drive direction may be parallel or transverse with regard to the squeeze direction.
  • the drive assembly may comprise at least one mover, wherein the at least one mover may be connected via at least one connection means with the at least one squeeze pin. Via the at least one mover and the at least one connection means, the force may be mechanically transferred from the drive assembly towards the at least one squeeze pin.
  • the at least one mover may be moved into the drive direction and hereby transfer said movement via the at least one connection means to the at least one squeeze pin, so that the squeeze pin moves into the squeeze direction.
  • the at least one connection means may be positively connected with the at least one squeeze pin and the at least one mover in order to transfer the force from the drive arrangement to the squeeze arrangement.
  • the mover may alternatively be used as limiting means in order to restrict the movement of the at least one squeeze pin.
  • the squeeze arrangement and/or the drive arrangement comprises at least one limiting means for limiting the movement of the at least one squeeze pin in the squeeze direction.
  • the maximum insertion depth of the at least one squeeze pin into the casting mold may be regulated.
  • the limiting means may comprise at least one mover and at least one connection means for connecting the mover to the at least one squeeze pin.
  • the apparatus further comprises the casting mold.
  • the casting mold may in particular be a casting mold for high pressure die casting (HPDC).
  • HPDC high pressure die casting
  • the casting mold may comprise two or more casting mold parts, which define the geometry of the metal component.
  • the at least one squeeze pin may comprise at least parts and/or be part of the squeeze arrangement, the cooling arrangement and/or the drive arrangement.
  • cooling fluids for example oil and/or water may be used.
  • exemplary embodiments described in this description are also intended to be disclosed with respect to every aspect and in all combinations with one another.
  • a method step is intended to also disclose respective means for performing the method step.
  • means for performing a certain method step are also intended to disclose the respective method step.
  • Fig. 1 and 2 are cross-sectional views of an apparatus 2 for applying a force to a metal component in a casting mold 4.
  • the apparatus 2 comprises a squeeze arrangement 6 with one squeeze pin 8. Further, the apparatus 2 comprises a cooling arrangement 10 for cooling the squeeze pin 8.
  • the squeeze pin 8 is movable in a squeeze direction S for applying a force to the casting mold 4.
  • the squeeze pin 8 In Fig. 1 the squeeze pin 8 is in a retracted position which for example is the position, the squeeze pin 8 is in during filling of the casting mold 4 with a meld.
  • the squeeze pin In order to press molten material from a sleeve inlet area 12 back into the casting mold 4 the squeeze pin may be moved via a drive arrangement 14 along the squeeze direction S into a second extracted position as illustrated in Fig. 2 .
  • the mold may be moved from the sleeve inlet area 12 back into the casting mold 4 in order to prevent the formation of air-inclusions in the metal components.
  • the squeeze pin 8 comprises cooling means 16 which are arranged at least partly inside the squeeze pin 8.
  • the cooling means 16 may comprise one inlet connection 18 and one outlet connection 20 for circulating a cooling fluid.
  • the cooling means 16 comprises one inlet channel 22, wherein the inlet channel 22 extends substantially longitudinally in the squeeze direction S inside the center of the squeeze pin 8 and two outlet channels 24 which border the inlet channel 22.
  • the two outlet channels 24 also extend substantially longitudinally along the squeeze direction S. The diameter of the two outlet channels 24 varies over their total length and increases in direction of the outlet connection 20.
  • the outlet channels 24 are separated from the inlet channel 22 via two separating member 26 which substantially extend along the squeeze pin 8 in the squeeze direction S.
  • the separating member 26 comprise one opening 30 respectively in order to fluidly connect the inlet channel 22 to the outlet channels 24.
  • the depicted arrows illustrate a possible circulation of a cooling fluid.
  • the squeeze arrangement 6 comprises sealing means 32 in form of sleeve blockers 34 and sleeve members 36 in order to prevent the metal component in the casting mold 4 from flowing into the squeeze arrangement 6.
  • the sleeve blockers 34 may be connected with the apparatus 2 via a screw connection 37.
  • the sleeve blockers 34 may serve as limiting means 34 for limiting the movement of the squeeze pin 8 in the squeeze direction S.
  • the drive arrangement 14 may comprise a hydraulic cylinder 38, wherein the cylinder 38 also comprises parts of the cooling arrangement 10, i.e. parts of the cooling inlet channel 22 and parts of the two cooling outlet channels 24.
  • the hydraulic cylinder 38 may be used in order to move the squeeze pin 8 into the squeeze direction S.
  • the hydraulic cylinder 38 is further connected with adapter means 39 for connecting the inlet channel 22 and the two outlet channels 24 to the inlet connection 18 and the outlet connection 20.
  • the squeeze pin 8 is positively connected with a connection means 40 which is itself connected with a mover 42.
  • the mover 42 may be or comprise limiting means 44 and 46 in order to restrict the movement of the squeeze pin 8 into the direction of the casting mold 4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP22191411.2A 2022-08-22 2022-08-22 Vorrichtung zum aufbringen von kraft auf ein metallbauteil in einer gussform, verfahren und verwendung einer vorrichtung Pending EP4327961A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22191411.2A EP4327961A1 (de) 2022-08-22 2022-08-22 Vorrichtung zum aufbringen von kraft auf ein metallbauteil in einer gussform, verfahren und verwendung einer vorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22191411.2A EP4327961A1 (de) 2022-08-22 2022-08-22 Vorrichtung zum aufbringen von kraft auf ein metallbauteil in einer gussform, verfahren und verwendung einer vorrichtung

Publications (1)

Publication Number Publication Date
EP4327961A1 true EP4327961A1 (de) 2024-02-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22191411.2A Pending EP4327961A1 (de) 2022-08-22 2022-08-22 Vorrichtung zum aufbringen von kraft auf ein metallbauteil in einer gussform, verfahren und verwendung einer vorrichtung

Country Status (1)

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EP (1) EP4327961A1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5178202A (en) * 1990-06-28 1993-01-12 Ube Industries, Ltd. Method and apparatus for casting engine block
JPH0539745U (ja) * 1991-09-06 1993-05-28 宇部興産株式会社 加圧ピンの冷却装置
US20050205231A1 (en) * 2004-03-18 2005-09-22 Toshihara Kanagata Kogyo Co., Ltd. Molding device
CN201906813U (zh) * 2011-01-11 2011-07-27 东莞市东升压铸模具有限公司 一种用于制造头盖的二次增压压铸模具
JP4759801B2 (ja) * 2000-11-27 2011-08-31 アイシン精機株式会社 ダイカストのスクイズ装置
JP2016107286A (ja) * 2014-12-03 2016-06-20 旭工精株式会社 摺動ピン冷却装置
CN212469690U (zh) * 2020-04-15 2021-02-05 湖州安达汽车配件有限公司 一种挤压销水冷机构
CN213496395U (zh) * 2020-10-20 2021-06-22 爱柯迪股份有限公司 挤压油缸和铝压铸模具

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5178202A (en) * 1990-06-28 1993-01-12 Ube Industries, Ltd. Method and apparatus for casting engine block
JPH0539745U (ja) * 1991-09-06 1993-05-28 宇部興産株式会社 加圧ピンの冷却装置
JP4759801B2 (ja) * 2000-11-27 2011-08-31 アイシン精機株式会社 ダイカストのスクイズ装置
US20050205231A1 (en) * 2004-03-18 2005-09-22 Toshihara Kanagata Kogyo Co., Ltd. Molding device
CN201906813U (zh) * 2011-01-11 2011-07-27 东莞市东升压铸模具有限公司 一种用于制造头盖的二次增压压铸模具
JP2016107286A (ja) * 2014-12-03 2016-06-20 旭工精株式会社 摺動ピン冷却装置
CN212469690U (zh) * 2020-04-15 2021-02-05 湖州安达汽车配件有限公司 一种挤压销水冷机构
CN213496395U (zh) * 2020-10-20 2021-06-22 爱柯迪股份有限公司 挤压油缸和铝压铸模具

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