WO2008009098A1 - Clapet pour système de moulage - Google Patents

Clapet pour système de moulage Download PDF

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Publication number
WO2008009098A1
WO2008009098A1 PCT/CA2007/001107 CA2007001107W WO2008009098A1 WO 2008009098 A1 WO2008009098 A1 WO 2008009098A1 CA 2007001107 W CA2007001107 W CA 2007001107W WO 2008009098 A1 WO2008009098 A1 WO 2008009098A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal
valve body
molding
valve
melt
Prior art date
Application number
PCT/CA2007/001107
Other languages
English (en)
Inventor
Sean Ian Weir
Original Assignee
Husky Injection Molding Systems 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 Husky Injection Molding Systems Ltd. filed Critical Husky Injection Molding Systems Ltd.
Priority to LU91514A priority Critical patent/LU91514B1/fr
Priority to CA002654023A priority patent/CA2654023A1/fr
Publication of WO2008009098A1 publication Critical patent/WO2008009098A1/fr

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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
    • B22D17/007—Semi-solid pressure die casting
    • 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
    • B22D17/203—Injection pistons
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores

Definitions

  • the present invention generally relates to molding systems, and more specifically the present invention relates to: (i) a metal-molding-system valve, (ii) a metal-molding system having a metal- molding-system valve, and (iii) a method of a metal-molding-system valve.
  • Examples of known molding systems are (amongst others): (i) the HylectricTM Molding System, (ii) the QuadlocTM Molding System, (iii) the HylectricTM Molding System, and (iv) the HyMetTM Molding System, all manufactured by Husky Injection Molding Systems Limited (Location: Bolton, Ontario, Canada; www.husky.ca).
  • U.S. Patent Number 4,908,169 discloses a plasticisation method using a reciprocating screw having a double-flighted screw to keep a solid bed under compression and to transfer melt films from the screw and a barrel-heated surface.
  • U.S. Patent Number 5,040,589 discloses injection molding of metal alloys, such as magnesium alloys, with improved yield, productivity, and mold life.
  • U.S. Patent Number 5,680,894 discloses an injection- molding apparatus for a metal alloy having dendritic properties.
  • the apparatus includes a sub-ring on a non-return valve assembly, which eliminates piston-ring leakage.
  • U.S. Patent Number 5,750,158 discloses an apparatus for preheating and blending material being fed to an extruder.
  • the apparatus uses co- rotating screws and a close-temperature control to allow the preheating of materials containing a high mineral-filler content without localized heating or compacting.
  • U.S. Patent Number 5,843,489 discloses a screw for an extruder.
  • the screw contains a jacket-shaped, spiral channel around a backside of a screw flight linked to inward and outward channels for a dual tube through a centre hole of a screw core.
  • U.S. Patent Application Number 2005/0233020A1 discloses a non-return valve for use in a molding system.
  • the valve has two complementary spigot portions provided on melt-flow surfaces that are engageable in closely spaced, overlapping, and parallel arrangement when valve is in a closed configuration.
  • a metal-molding-system valve including a valve body positionable in a melt-carrying passageway of a metal-molding system, the valve body permitting solidified adherence of a metallic-molding material of melt-carrying passageway to the valve body.
  • a metal-molding system having a metal-molding-system valve, including a valve body positionable in a melt-carrying passageway of the metal-molding system, the valve body permitting solidified adherence of a metallic-molding material of melt-carrying passageway to the valve body.
  • a method of a metal-molding- system valve including positioning a valve body in a melt-carrying passageway of a metal-molding system, and also including permitting solidified adherence of a metallic-molding material of melt- carrying passageway to the valve body.
  • a technical effect, amongst other technical effects, of the aspects of the present invention is the molding-system valve is less prone to wear.
  • FIGS. IA and IB are cross-sectional views of a metal-molding-system valve according to a first exemplary embodiment
  • FIG. 2 is a cross-sectional view of a metal-molding-system valve according to a second exemplary embodiment
  • FIG. 3 is a cross-sectional view of a metal-molding-system valve according to a third exemplary embodiment
  • FIG. 4 is a cross-sectional view of a metal-molding-system valve according to a fourth exemplary embodiment
  • FIGS. 5A to 5C are views of metal-molding-system valves according to a fifth exemplary embodiment
  • FIGS. 6A to 6C are views of metal-molding-system valves according to a sixth exemplary embodiment.
  • FIG. IA is a cross-sectional view of a metal-molding-system valve 100 (hereafter referred to as "the valve 100") according to the first exemplary embodiment.
  • the valve 100 is used in a metal-molding system 102 (hereafter referred to as the "system 102") or in a thixo-molding system.
  • a thixo- molding system is used to process a slurry (part liquid, part solid) of a magnesium alloy.
  • the valve 100 includes a valve body 104 that is positionable in a melt-carrying passageway 108 of the system 102.
  • the valve body 104 permits solidified adherence of a metallic-molding material 110 of (disposed in) melt-carrying passageway 110 to the valve body 104.
  • solidified adherence of the metallic-molding material 108 to the valve body 104 permits repeatable operation of the valve body 104.
  • the metallic-molding material 1 10 is hereafter referred to as the "melt 1 10".
  • a metallic plug 106 is formable between the valve body 104 and the melt-carrying passageway 108.
  • the metallic plug 106 is solidifyable to (formable to, detachably adherable to) and meltable from (deformable from) the valve body 104.
  • the metallic plug 106 (a thixo plug in the case of a thixo-molding system) is formable to the valve body 104.
  • the metallic plug 106 (hereafter referred to as "the plug 106") is formable from a melt 1 10 (a metallic molding material).
  • the melt 1 10 includes an alloy composition of magnesium (such as AZ91D). According to a variant, other alloys or types of metals are used (zinc, aluminum, etc).
  • the valve body 104 defines a cavity 112 in cooperation with a molding-system component 114 (for example: a barrel) of the system 102.
  • a molding-system component 114 for example: a barrel
  • the molding component 114 is hereafter referred to as "the barrel 114"; however, according to other variants, the molding component 1 14 is a component other than "the barrel”.
  • the cavity 1 12 is configured to have the plug 106 formed therein at least in part.
  • the valve body 104 includes or defines an outer surface 126.
  • the valve body 104 is attached (preferably threadably attached) to a processing screw 120 having an outer surface 121 and the processing screw 120 is useable in the barrel 114.
  • the barrel 114 defines an outer barrel wall 129 and also defines a barrel inner wall 128, which faces the outer surface 126 of the valve body 104 and faces the processing screw 120.
  • the outer surface 126 of the valve body 104 is configured to be cooled by a cooling mechanism 1 16.
  • the cooling mechanism 116 is configured to form a plug 106 between the outer surface 126 of the valve body 104 and the barrel inner wall 128. Details of the cooling mechanism 116 will be described below in more detail.
  • the processing screw 120 transports the melt 110 through a melt-carrying passageway 108 which is defined between the barrel inner wall 128 and the outer surface 121 of the processing screw 120.
  • the melt-carrying passageway 108 extends from a hopper (not depicted, but located to the right side of FIG. IA) to a machine nozzle 144 that extends from the barrel 114.
  • the melt 110 is transported past the valve body 104 and toward the machine nozzle 144 upon rotational actuation of the processing screw 120.
  • the melt 110 is accumulated within an accumulation zone 140 defined between the valve body 104 and the machine nozzle 144.
  • a plug in an open condition, it is understood that a plug (not depicted in FIG. IA) will be formed within the nozzle 144 by using the cooling mechanism 138; it is understood that once a plug is formed in the nozzle 144, accumulation of the molding material in the accumulation zone 140 may then begin.
  • the melt 110 is deposited into the accumulation zone 140 where the melt 110 is collected (during a recovery phase) and then injected (during an injection phase) into a mold cavity defined by a mold (not depicted), which is operatively connected to the machine nozzle 144.
  • the processing screw 120 is actuatably rotated via an actuation mechanism (not depicted). Rotation of the processing screw 120 is sufficient to transport the melt 110 into the accumulation zone 140 (this is the recovery phase) and this action builds up an accumulation (or a shot) of melt in the accumulation zone 140.
  • the screw 120 translates away from the machine nozzle 144 during recovery.
  • the actuation assembly then slidably translates the processing screw 120, which injects the shot of melt from the accumulation zone 140 and into the mold cavity (this is the injection phase).
  • the valve body 104 Upon slidable translation of the processing screw 120, the valve body 104 becomes slidable and translatable as well since the valve body 104 is connected to the processing screw 120.
  • the plug 106 is created or formed, within the cavity 1 12, upon actuation of the cooling mechanism 116 after the shot of melt has been accumulated within the accumulation zone 140.
  • the cooling mechanism 116 cooperates with the processing screw 120 and cooperates with the valve body 104.
  • the cooling mechanism 116 defines a cooling circuit 118A that extends within the processing screw 120 (at least in part).
  • the cooling circuit 118A is, preferably, enwrapped by an insulation layer 119 (at least in part) which avoid the cooling circuit 118A from absorbing heat from the processing screw 120.
  • the valve body 104 defines a cooling circuit 118B that is in fluid communication with the cooling circuit 118A.
  • the molding material freezes in the cavity 112 to form the plug 106 and it would be acceptable that some of the molding material was to freeze elsewhere along the surface of the nozzle body 104, which is being generally cooled.
  • the amount of cooling directed to forming the plug 106 should be enough to form the plug and no more to cause adverse cooling of the molding material.
  • the amount of cooling would have to be determined by some experimentation.
  • a layer of frozen molding material may form to and adhere to the front surface of the body 104, but it may be best (preferably) to minimize this condition from occurring.
  • the processing screw 120 cooperates with a manifold 122 A and a manifold 122B.
  • the manifolds 122A, 122B include rotary-fluid couplings.
  • the manifolds 122A, 122B are adapted to permit the screw 120 to be rotatable (by way of using gaskets, bearings, etc as known to those skilled in the art).
  • the manifold 122A receives, within a coolant holding area, a cooling fluid 125 (under pressure), transfers the cooling fluid 125 into the cooling circuit 1 18A.
  • the cooling fluid 125 then flows from the cooling circuit 1 18A, into the cooling circuit 118B of the valve body 104, back into another branch of the cooling circuit 1 18A and then into the manifold 122B, which permits the cooling fluid 125 to exit from the processing screw 120.
  • the cooling fluid 125 removes heat from the valve body 104.
  • the plug 106 is formed adjacent to the valve body 104 and within the cavity 112.
  • the cooling fluid 125 is deposited into the cooling circuits 118A and 118B for a calculated duration and possesses a sufficient cooling effect to form the plug 106.
  • the valve body 104 includes a melt-receiving feature 124 that faces the cavity 112.
  • the plug 106 is formed and eventually, if the cooling process of the cooling mechanism 116 acts with sufficient duration and strength, adheres to the melt-receiving feature 124.
  • the plug 106 forms and adheres to both the melt-receiving feature 124 and detachably adheres to the barrel inner wall 128 so as to provide an efficient barrier that prevents backflow of melt from the accumulation zone 140 backwardly toward the hopper and the manifolds 122 A and 122B upon translation of the processing screw 120 toward the accumulation zone 140.
  • the plug 106 detachably adheres to the body 104 in that the plug 104 may form and temporarily adhere to the body 104 so as to significantly reduce or prevent leakage of molding material (once the plug 106 is formed and adhered to the body 104); however, the formed and adhered plug 106 is sheared off the from the inner surface of the barrel 1 14 once the screw 120 is made to translate (but the plug 106 may continue to adhere to the valve body 104 after the plug 106 has been sheared off the barrel 1 14).
  • the melt-receiving feature 124 acts to facilitate or enhance bonding with the plug 106 so that as the valve body 104 is translated forwardly toward the machine nozzle 144 the plug 106 does not become detached from the valve body 104.
  • the valve body 104 does not include the melt-receiving feature 124 since the plug 106 may be adhered to the valve body 104 with sufficient a bonding strength.
  • the plug 106 is adherable and un-adherable (depending on the ability of the cooling mechanism 1 16) to and from any one of the valve body 104, the barrel 114 and any combination and permutation thereof.
  • the plug 106 although adhered to the barrel 114 and/or to the valve body 104 is shearable from either the valve body 104 and/or the barrel 114 upon actuation of the processing screw 120, which translates the valve body 104 toward the accumulation zone 140.
  • the plug 106 is adhered to the melt-receiving feature 124 so that the plug 106 becomes shearable (as close as possible) from the barrel inner wall 128 of the barrel 1 14 while remaining adhered to the melt-receiving feature 124 of the valve body 106.
  • a small gap (not depicted) is permitted between the formed plug 106 and the inner wall of the barrel, and the small gap is small enough so as to permit creation of a sufficient pressure drop from the front to the back of the valve body 104. After the screw 120 is stroked forwardly, cooling may be shut off and this arrangement permits melting of the plug 106 (if so desired).
  • the plug 106 is no longer required.
  • the plug 106 is preferably melted by actuation of a heater 132A placed accordingly along the barrel outer surface 129.
  • the remaining heaters 132B and 132C may be actuated to melt any solidified melt disposed in the melt-carrying passageway 108, and a thixo plug (not depicted) is formed in the machine nozzle 144.
  • the plug formed in the nozzle 114 may be substituted for a mechanical valve (for example).
  • FIG. IB is a detailed cross-sectional view of the valve 100 of FIG. IA.
  • the valve 100 is shown immediately after the injection phase but before initiation of the recovery phase.
  • the plug 106 may continue to exist (even though the plug 106 has been sheared off the barrel 114).
  • the heater 142 may be actuated so as to add heat to the barrel 1 14 sufficiently enough to melt the plug 106 completely (the melted condition of the plug 106 is depicted in FIG. IB).
  • the processing screw 120 is translated forwardly toward the machine nozzle 144, and the melt 1 10 accumulated in the accumulation zone 140 is then forced through the machine nozzle 144 into the mold cavity of the mold (not depicted).
  • the melt 110 is transported by the processing screw 120 (along the melt-carrying passageway 108) so that the screw 120 deposits the melt 110 into the accumulation zone 140.
  • This accumulation of the melt within the accumulation zone 140 causes the processing screw to translate backwardly toward the manifold 122A (not shown).
  • the plug 106 may be reheated enough to re-melt the plug 106 if so desired.
  • a thixo plug (not depicted) is formed within the machine nozzle 144 by using a nozzle cooling mechanism 138. This thixo plug is blown out from the nozzle 144 during the injection phase to allow the melt 1 10 in the accumulation zone 140 to enter the mold cavity.
  • another shot of the melt 110 must be accumulated. This is accomplished by melting the plug 106 (not shown), which is adhered to the valve body 104 by using the heater 132A. If needed heaters 132B and 132C may be used to melt any potentially solidified melt that may have formed unintentionally (for whatever reason).
  • the recovery phase may be repeated. This is then followed by repetition of the injection phase.
  • the heater 142 is and induction heater that is attached to the barrel 114 to increase effectiveness for melting the plug 106.
  • the induction heater 142 is a fast-acting heating mechanism.
  • a mechanical nozzle is used in place of forming and blowing out a plug from the nozzle 144.
  • FIG. 2 is a cross-sectional view of a metal-molding-system valve 200 (hereafter referred to as "the valve 200") according to the second exemplary embodiment.
  • the valve 200 a metal-molding-system valve 200
  • elements of the second exemplary embodiment that are similar to those of the first exemplary embodiment
  • reference numerals that use a two hundred designation rather than a one hundred designation (as used in the first exemplary embodiment).
  • the valve body of the second exemplary embodiment is labeled 204 rather than being labeled 104, etc.
  • the valve body 204 includes a valve passageway 209, a valve seal 21 1, a cooling circuit
  • the valve passageway 209 is defined within the valve body 204, and allows the plug 206 to be formable therein.
  • the valve passageway 209 extends from the accumulation zone 240 to the melt-carrying passageway 208.
  • the passageway 208 is defined by the processing screw 220 and the barrel 214. The valve passageway 208 receives the melt 210, and then it passes the melt 210 to the accumulation zone 240 during a recovery phase.
  • the valve body 204 which defines a valve body surface 205, accommodates the valve seal 211.
  • the valve seal 211 is located on the valve body surface 205, and the valve seal 211 is adjacent to the barrel 214.
  • the valve seal 211 interacts with the barrel inner wall 228 to substantially prevent a backflow of melt (the metallic molding material) from the accumulation zone 240 along the barrel inner wall 228 and toward the melt-carrying passageway 208 during an injection phase.
  • the valve body 204 defines the cooling circuit 218B.
  • the cooling circuit 218B is connected to the cooling mechanism 216, which is actuated to form the plug 206.
  • the cooling circuit 218B is placed accordingly in the valve body 204 as to not interfere with any mechanisms and/or assemblies defined therein.
  • the valve heater 213 is positionable within the valve body 204 adjacent to the valve passageway 209.
  • the valve heater 213 is electrically connected to a valve-heater connection 215.
  • the valve-heater connection 215 extends from the valve heater 213 into the processing screw 220 and over to an electrical power source (not depicted).
  • the valve heater 213 is placed along the valve passageway 209 to remove the plug 206 prior to commencement of the injection phase.
  • the heater 213 is omitted and the plug is removed by throttling the cooling to the valve body 204 and allowing the valve body 204 to reheat by conduction from the molding material.
  • FIG. 3 is a cross-sectional view of a metal-molding-system valve 300 (hereafter referred to as "the valve 300") according to the third exemplary embodiment.
  • the valve 300 a metal-molding-system valve 300 (hereafter referred to as "the valve 300") according to the third exemplary embodiment.
  • elements of the third exemplary embodiment that are similar to those of the first exemplary embodiment) are identified by reference numerals that use a three hundred designation rather than a one hundred designation (as used in the first exemplary embodiment).
  • the valve body of the third exemplary embodiment is labeled 304 rather than being labeled 104, etc.
  • the valve body 304 is configured to have a plug 306 formable within the cavity 312.
  • the cooling mechanism 316 includes heat pipes 350. Using heat pipes in screws is known to those skilled in the art (reference is made to Japanese Patent JP 61-188125.
  • the valve body 304 and the processing screw 320 are configured to accommodate a set of heat pipes 350 (or a single heat pipe).
  • the heat pipes 350 include a heat conductive material such as aluminum or copper and the heat pipes 350 are filled with a heat-transfer medium (for example: a wick material and/or a coolant medium) that conducts heat from one end of the heat pipes 350 to the other end.
  • the coolant medium or the wick material is chosen from a chemical element or composition that absorbs heat effectively (for example: mercury or sodium).
  • a sufficient number of heat pipes 350 are used to remove heat from the cavity 312 in order to form (at least in part) the plug 306 therein (preferably after the recovery phase).
  • the heat pipes 350 are oriented such that heat is absorbed from the cavity 312 at a receiving end of the heat pipes 350 and then the absorbed heat is transported to a relief end (or an opposite end) of the heat pipes 350.
  • the relief end of the heat pipes 350 is in fluid communication with a manifold 322.
  • the manifold 322 distributes the coolant fluid 325 (under pressure) over the relief end of the heat pipes 350 to remove heat therefrom.
  • This heat removal from the valve body 304 forms (at least in part) the plug 306.
  • the heat pipes 350 may be encapsulated within an insulation layer 31 1.
  • the heat pipe 350 is permitted to deliver heat to the valve body 304 so as to melt the plug 306. Heat pipes and the operation of heat pipes are known to those skilled in the art, and therefore no further description is provided for heat pipes.
  • the heat pipes 350 depicted in FIG. 3 are used along with the valve body 204 of FIG. 2, and this arrangement permits elimination of the heater 213.
  • FIG. 4 is a cross-sectional view of a metal-molding-system valve 400 (hereafter referred to as "the valve 400") according to the fourth exemplary embodiment.
  • the valve 400 a metal-molding-system valve 400 (hereafter referred to as "the valve 400") according to the fourth exemplary embodiment.
  • elements of the fourth exemplary embodiment that are similar to those of the first exemplary embodiment) are identified by reference numerals that use a four hundred designation rather than a one hundred designation (as used in the first exemplary embodiment).
  • the valve body of the fourth exemplary embodiment is labeled 404 rather than being labeled 104, etc.
  • a cooling mechanism 416 is used to form the thixo plug 406.
  • the cooling mechanism 416 cooperates with the barrel 414.
  • the cooling mechanism 416 is positioned adjacent to the valve body 404 along the barrel outer wall 429.
  • the cooling mechanism 416 removes heat from the barrel outer wall 429 adjacent to a region proximate to where the valve body 404 is located.
  • the cooling mechanism 416 delivers a coolant fluid 425 (under pressure) toward the end of the recovery phase to form (at least in part) the plug 406.
  • FIGS. 5A to 5C are cross-sectional views of metal-molding-system valves 500A, 500B and 500C (hereafter referred to as "the valves 500A, 500B, 500C) according to the fifth exemplary embodiment.
  • the valves 500A, 500B, 500C are identified by reference numerals that use a five hundred designation rather than a one hundred designation (as used in the first exemplary embodiment).
  • the mold body of the fifth exemplary embodiment is labeled 504 rather than being labeled 104.
  • the valves 500A, 500B and 500C each include melt-receiving features 524A, 524B, and 524C respectively, and each has a plurality of various types or shapes of grooves.
  • the valve body 504 has a longitudinal axis 562 that extends from the center therethrough.
  • FIG. 5A shows the valve 500A that includes the melt-receiving feature 524A that has a plurality of rectangular-shaped grooves 560A, 560B, and 560C that are aligned (preferably) orthogonal to the longitudinal axis 562.
  • the rectangular-shaped grooves 560A, 560B, 560C are arrayed successively at calculated, offset distances therebetween.
  • the arrangement of the rectangular-shaped grooves 560A, 560B, and 560C is not limited to this configuration (for example: they may be irregularly spaced and/or the rectangular-shaped grooves may be inclined non-orthogonal from the longitudinal axis 562).
  • FIG. 5B shows the valve 500B that includes the melt-receiving feature 524B that has a plurality of v-shaped grooves 564A, 564B, 564C.
  • the v-shaped grooves 564A, 564B, and 564C are arrayed successively at a calculated offset distance between one another.
  • the arrangement of the v-shaped grooves 564A, 564B, and 564C is not limited to this configuration (for example: they may be irregularly spaced apart and/or may be inclined non-orthogonal from the longitudinal axis 562).
  • FIG. 5C shows the valve 500C that includes the melt-receiving feature 524C that has semispherical- shaped grooves 566A, 566B, 566C.
  • the semispherical-shaped grooves 566A, 566B, and 566C are arrayed successively at a calculated offset distance apart from each other.
  • the arrangement of the semispherical-shaped grooves 566A, 566B, and 566C is not limited to this configuration (for example: they can be irregularly spaced apart from one another and/or may be inclined non- orthogonal from the longitudinal axis 562.
  • melt-receiving features 524A, 524B, 524C are not used in the valve body 504.
  • the melt-receiving features 524A, 524B, 524C are not used in the valve body 504, and the side walls of the body 504 are tapered towards a front end of the body 504 (towards the top side of FIG. 5).
  • FIGS. 6A to 6C are cross-sectional views of a metal molding-system valve 600 (hereafter referred to as "the valve 600) according to the sixth embodiment.
  • the valve 600 elements of the sixth exemplary embodiment (that are similar to those of the first exemplary embodiment) are identified by reference numerals that use a six hundred designation rather than a one hundred designation (as used in the first exemplary embodiment).
  • the mold body of the sixth exemplary embodiment is labeled 604 rather than being labeled 104.
  • the valve 600A, 600B and 600C each include melt-receiving features 624A, 624B, and 624C respectively (each having a plurality of recesses).
  • FIG. 6A shows the valve 600 that includes the melt-receiving feature 624A that has a plurality of rectangular-shaped recesses 670 that are aligned (in rows) orthogonal to a surface of the valve body 604.
  • the rectangular-shaped recesses 670 are arrayed successively at calculated offset distances from one another.
  • the arrangement of the rectangular-shaped recesses 670 is not limited to this configuration (for example: they may be irregularly spaced and/or inclined non-orthogonal from a longitudinal axis of the valve body 604 and/or placed in a random pattern onto the valve body 604).
  • FIG. 6B shows the valve 600B that includes the melt-receiving feature 624B includes a plurality of conically shaped recesses 672.
  • the conically shaped recess 672 is arrayed successively at calculated offset distances from one another.
  • the arrangement of the conically shaped recesses 672 is not limited to this configuration (for example: they may be irregularly spaced apart, etc).
  • FIG. 6C shows the valve 600C that includes the melt-receiving feature 624C that has semispherical- shaped recesses 674.
  • the semispherical-shaped recesses 674 are arrayed successively at a calculated offset distance from each other.
  • the arrangement of the semispherical-shaped recesses 674 is not limited to this configuration (for example: they may be irregularly spaced apart, etc).
  • the melt-receiving features 624A, 624B, 624C are not used in the valve body 604.
  • the melt-receiving features 624A, 624B, 624C are not used in the valve body 604, and the side walls of the body 604 are tapered towards a front end of the body 604 (towards the top side of FIG. 6).
  • the melt-receiving feature 624 includes a plurality of divots.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Prostheses (AREA)
  • Valve Housings (AREA)

Abstract

L'invention concerne un système de moulage de métaux qui comprend un clapet dans un passage de transport de coulée, le clapet comprenant un élément de réception de coulée, par exemple une pluralité de rainures. Le matériau métallique moulé se solidifie entre l'élément de réception de coulée et le passage de transport de coulée. Le clapet reste opérationnel après la solidification du matériau.
PCT/CA2007/001107 2006-07-20 2007-06-26 Clapet pour système de moulage WO2008009098A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
LU91514A LU91514B1 (fr) 2006-07-20 2007-06-26 Vanne de système de moulage
CA002654023A CA2654023A1 (fr) 2006-07-20 2007-06-26 Clapet pour systeme de moulage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/489,981 US20080017345A1 (en) 2006-07-20 2006-07-20 Molding-system valve
US11/489,981 2006-07-20

Publications (1)

Publication Number Publication Date
WO2008009098A1 true WO2008009098A1 (fr) 2008-01-24

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DE102012102549A1 (de) * 2011-11-15 2013-05-16 Ferrofacta Gmbh Druckgussdüse und Verfahren zum Betrieb der Druckgussdüse
CN111152451B (zh) * 2018-11-07 2021-08-24 精工爱普生株式会社 塑化装置、三维造型装置以及注塑成型装置
CN110695335A (zh) * 2019-10-24 2020-01-17 上海五腾金属制品有限公司 一种实现镁合金射出成型的装置及方法

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US20080017345A1 (en) 2008-01-24
LU91514B1 (fr) 2009-05-17
CA2654023A1 (fr) 2008-01-24

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