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US20020148592A1 - Apparatus for casting scroll member and method of manufacturing scroll member - Google Patents

Apparatus for casting scroll member and method of manufacturing scroll member Download PDF

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Publication number
US20020148592A1
US20020148592A1 US10/124,546 US12454602A US2002148592A1 US 20020148592 A1 US20020148592 A1 US 20020148592A1 US 12454602 A US12454602 A US 12454602A US 2002148592 A1 US2002148592 A1 US 2002148592A1
Authority
US
United States
Prior art keywords
scroll member
die
scroll
casting
molding
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.)
Abandoned
Application number
US10/124,546
Other languages
English (en)
Inventor
Tatsushi Mori
Masao Iguchi
Yoshio Fujita
Yoshiharu Yoshida
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.)
Toyota Industries Corp
Original Assignee
Toyota Industries Corp
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 Toyota Industries Corp filed Critical Toyota Industries Corp
Assigned to KABUSHIKI KAISHA TOYOTA JIDOSHOKI reassignment KABUSHIKI KAISHA TOYOTA JIDOSHOKI ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FUJITA, YOSHIO, IGUCHI, MASAO, MORI, TATSUSHI, YOSHIDA, YOSHIHARU
Publication of US20020148592A1 publication Critical patent/US20020148592A1/en
Abandoned 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
    • B22D17/22—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
    • B22D17/229—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies with exchangeable die part
    • 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
    • B22D17/26—Mechanisms or devices for locking or opening dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D33/00—Equipment for handling moulds
    • B22D33/04—Bringing together or separating moulds

Definitions

  • the present invention relates to an apparatus for casting a scroll member for use in a compressor and a method of manufacturing a scroll member.
  • One of compressors used in a refrigerant circuit of a vehicle is a scroll type.
  • the scroll type compressor generally accommodates a fixed scroll member and a movable scroll member in its housing.
  • the fixed scroll member includes a base plate and a scroll wall
  • the movable scroll member includes a base plate and a scroll wall. The scroll walls of the fixed and movable scroll members are engaged with each other.
  • Compression chambers are defined between the scroll walls.
  • the compression chambers radially inwardly move from the peripheral side of the scroll walls toward the center of the scroll walls by orbiting the movable scroll member with respect to the central axis of the fixed scroll member, thus gradually compressing gas introduced from an outside.
  • the movable and fixed scroll members are manufactured by die-casting, which is one of moldings.
  • a casting apparatus 55 provides a cope 43 and a drag 33 on its center.
  • the cope 43 is a die for casting a scroll wall of a scroll member 50
  • the drag 33 is a die for casting a base plate of the scroll member 50 .
  • the cope 43 and the drag 33 define a cavity 36 for casting by fitting the cope 43 to the drag 33 .
  • a molten metal is filled in the cavity 36 between the cope 43 and the drag 33 , and is cooled.
  • the cast scroll member 50 is taken off out of the cope 43 and the drag 33 after the molten metal solidifies.
  • the scroll member 50 is indicated by hatching in FIGS. 3A and 3B.
  • extruding plungers 45 provided in the cope 43 push the end 50 a of the scroll wall and extrude the scroll wall synchronously with separating the cope 43 from the drag 33 .
  • extruding plungers 35 provided in the drag 33 extrude the base plate of the movable scroll member.
  • the present invention addresses the above-mentioned problems by improving a die for casting a scroll member
  • an apparatus for casting a scroll member of a compressor has a first die and a second die.
  • the first die includes a molding surface for molding a base plate of the scroll member.
  • the second die includes a molding surface for molding a scroll wall of the scroll member.
  • the first and second dies define a cavity for casting the scroll member.
  • the first die also includes a first die-member and a second die-member.
  • the second die-member forms a portion of the scroll member, which extends in a direction substantially perpendicular to a direction in which the first and second dies separate from each other.
  • the present invention also provides a method of manufacturing a scroll member, including a base plate and a scroll wall, by a die having a first part including a molding surface for the scroll wall, a second part including a molding surface for the base plate, and a third part including a molding surface to form a protrusion of the scroll member, which extends in a direction substantially perpendicular to a direction in which the first and second parts separate from each other.
  • the method includes casting the scroll member in the die, separating the first part from the second and third parts while the third part engages with the protrusion, disengaging the third part from the protrusion, and separating the scroll member from the second part.
  • FIG. 1A is a schematic cross-sectional view of an apparatus for casting a scroll member of a compressor in a state of fitting a cope to a drag according to an embodiment of the present invention
  • FIG. 1B is a schematic cross-sectional view of an apparatus for casting a scroll member of a compressor in a state of separating a cope from a drag according to the embodiment of the present invention
  • FIG. 1C is a schematic cross-sectional view of an apparatus for casting a scroll member of a compressor in a state of extruding a scroll member from a cope according to the embodiment of the present invention
  • FIG. 2A is a top plan view of a cope according to the embodiment of the present invention.
  • FIG. 2B is a cross-sectional view taken along the line 1 - 1 in FIG. 2A;
  • FIG. 2C is an enlarged partial cross-sectional view of FIG. 2B;
  • FIG. 3A is a schematic cross-sectional view of an apparatus for casting a scroll member of a compressor in a state of fitting a cope to a drag according to a prior art
  • FIG. 3B is a schematic cross-sectional view of an apparatus for casting a scroll member of a compressor in a state of separating a cope from a drag according to the prior art.
  • FIGS. 1A through 2C A casting apparatus 25 shown in FIG. 1A is used for casting a scroll member 20 for use in a scroll type compressor.
  • the scroll member 20 described in the present embodiment is a movable scroll member.
  • the casting apparatus 25 includes a fixed installation seat 1 at its lower side, and the fixed installation seat 1 provides a drag 3 as a first part including a molding surface for casting a scroll wall of the scroll member 20 and a molding surface for casting the surface of a base plate of the scroll member adjacent to the scroll wall.
  • the casting apparatus 25 also includes a movable installation seat 11 at its upper side, and the movable installation seat 11 connects with a cylinder actuator or another reciprocating actuator as a driving apparatus, which is not shown, for operating the movable installation seat 11 .
  • the movable installation seat 11 provides a cope 13 as a die including a molding surface for casting the base plate of the scroll member 20 through a stay 12 .
  • the movable installation seat 11 operatively moves up and down by the driving apparatus, so that the cope 13 can approach and leave from the drag 3 .
  • the cope 13 forms a plurality of plunger holes 14 , and the lower ends of the plunger holes 14 extend to a cavity 6 , which is defined by the cope 13 and the drag 3 .
  • Extruding plungers 15 each extend through the plunger holes 14 .
  • One ends of the extruding plungers 15 are secured to an extruding plate 16 , which is positioned between the movable installation seat 11 and the cope 13 .
  • the one ends of the extruding plungers 15 recede from and protrude into the cavity 6 by moving the extruding plate 16 up and down, respectively.
  • the extruding plate 16 moves up and down by operating a cylinder actuator 19 or another reciprocating actuator as a driving apparatus
  • the scroll member 20 manufactured by the casting apparatus 25 is constituted of a base plate 21 and a scroll wall 22 .
  • the base plate 21 provides a boss 32 on the side opposite to the scroll wall 22 .
  • the plunger holes 14 are formed in the cope 13 , and the extruding plungers 15 extend the plunger holes 14 through.
  • the plunger holes 14 and the extruding plungers 15 are not shown.
  • the cope 13 which is the die including the molding surface for casting the base plate 21 , includes a first molding surface 31 a for molding the base plate 21 .
  • the first molding surface 31 a forms a disk-shaped cavity, which provides a plurality of recesses 37 a (three recesses in the present embodiment) in equiangular positions on its outer periphery.
  • the recesses 37 a are trapeziform in shape, as seen from the upper side of the cope 13 .
  • the recesses 37 a extend in a direction B, which is perpendicular to a direction in which the cope 13 and the drag 3 separate from each other or perpendicular to a direction A.
  • the direction A is a vertical direction in the present embodiment.
  • the cope 13 also includes a second molding surface 32 a for casting the boss 32 .
  • the second molding surface 32 a forms a cylindrical cavity, which also provides a plurality of trapeziform recesses 38 a (three recesses in the present embodiment) in equiangular positions on its outer periphery, as well as the recesses 37 a .
  • Protrusions 37 , 38 are formed in the recesses 37 a , 38 a by casting, respectively.
  • the cope 13 includes a main die 13 a as a first die-member and a second part and a plurality of sub dies 13 b as a second die-member and a third part (three in the present embodiment).
  • the main die 13 a which does not includes the recesses 37 a , 38 a , operates in the direction A.
  • the sub dies 13 b which includes the recesses 37 a , 38 a , operate in the direction B perpendicular to the direction A and in a radial direction with respect to the central axis of the scroll member 20 .
  • the drag 3 which is the die including the molding surface for casting the scroll wall 22 of the scroll member 20 , includes a third molding surface 22 a for molding the scroll wall 22 .
  • the third molding surface 22 a forms a scroll-shaped cavity.
  • the cavity 6 which forms the scroll member 20 , is defined by fitting the cope 13 to the drag 3 .
  • the cavity 6 provides drafts ⁇ in various portions so as to separate the scroll member 20 from the dies smoothly.
  • the second molding surface 32 a of the cope 13 provides drafts ⁇ on surfaces for casting the inner and outer circumferential walls of the boss 32 .
  • the third molding surface 22 a of the drag 3 provides drafts ⁇ on surfaces for casting the inner and outer circumferential walls of the scroll wall 22 .
  • the recesses 37 a , 38 a of the sub dies 13 b provide drafts ⁇ on its upper and lower surfaces and both sides, respectively. The inclinations of the drafts ⁇ are determined based on difficulty in separating the scroll member 20 from the dies and a required leave for machining after casting.
  • the sub dies 13 b each connect with cylinder actuators or other reciprocating actuators, which are not shown, for operating the sub dies 13 b , and the cylinder actuators or other reciprocating actuators are arranged on the movable installation seat 11 .
  • the cylinder actuators or other reciprocating actuators each reciprocate, the sub dies 13 b each move in the respective directions B.
  • the cylinder actuators or other reciprocating actuators for operating the sub dies 13 b are arranged so as to reciprocate in the respective directions B perpendicular to the direction A.
  • the cope 13 is formed by fitting the sub dies 13 b to the main die 13 a.
  • the cope 13 with the movable installation seat 11 moves downwardly. Thereby, the cope 13 fits onto the drag 3 , thus defining the cavity 6 .
  • Heated molten metal passes through a gate, which is formed through the drag 3 , and the molten metal is forced into the cavity 6 including the recesses 37 a , 38 a by operating a plunger for injecting the molten metal.
  • the gate and the plunger are not shown. Meanwhile, the end of the extruding plungers 15 extend to the bottom openings of the plunger holes 14 , and close the plunger holes 14 to define the cavity 6
  • the cope 13 and the drag 3 are cooled by cooling water flowing through a cooling pipe, which extends in the cope 13 and the drag 3 .
  • a cooling pipe which extends in the cope 13 and the drag 3 .
  • the movable installation seat 11 moves upwardly after the molten metal solidifies, and the cope 13 leaves from the drag 3 , thus starting separating the scroll member 20 from the dies.
  • the cylinder actuators or other reciprocating actuators, which are not shown, for operating the sub dies 13 b are arranged on the movable installation seat 11 and connect with the sub dies 13 b , the sub dies 13 b integrally move upwardly with the movable installation seat 11 .
  • the base plate 21 is lifted up from the drag 3 by moving the cope 13 including the sub dies 13 b upwardly.
  • the base plate 21 is easily separated from the drag 3 due to the drafts ⁇ of the scroll wall 22 .
  • the sub dies 13 b moves in the direction B perpendicular to the direction A and in the radial direction with respect to the central axis of the scroll member 20 , thus separating the sub dies 13 b from the protrusions 37 , 38 .
  • the cylinder actuator 19 or other reciprocating actuator operates, and the extruding plungers 15 protrude.
  • the base plate 21 is force out, and leaves from the main die 13 a.
  • a robot arm 39 extends to a space between the cope 13 and the drag 3 preceded the separation of the base plate 21 from the main die 13 a , the robot arm 39 receives the scroll member 20 , and finally carries the scroll member 20 to a next process.
  • the end 20 a of the scroll wall 22 does not provide any recesses and protrusions as those in the conventional casting apparatus 55 .
  • the base plate 21 provides recesses and protrusions on a surface opposite to the scroll wall 22 .
  • the surface opposite to the scroll wall 22 may be machined, and the recesses and protrusions may disappear. Even if the recesses and protrusions are left as it is, the condition of the surface does not affect the operation of the scroll member 20 in a state that the scroll member 20 is assembled to a compressor.
  • the extruding plungers 15 push the thick flat base plate 21 . Therefore, the scroll member 20 hardly deforms. If the protrusions 37 , 38 are used for assembling the scroll member 20 , or are available in operating the scroll member 20 , the protrusions 37 , 38 may be left. Basically, the protrusions 37 , 38 are removed by machining.
  • the end 20 a of the scroll wall 22 of the scroll member 20 does not provide any recesses, any protrusions and any deformations as those by a plurality of the extruding plungers 45 in the conventional casting apparatus 55 , and the surface of the end 20 a is flat, thereby reducing or cutting a process for machining the end 20 a and the wall surface of the scroll wall 22 of the scroll member 20 . Accordingly, time and process of manufacturing may be reduced as compared with conventional time and process of manufacturing.
  • the scroll member 20 is separated from the dies in order of the scroll wall 22 , protrusions 37 , 38 , and the base plate 21 .
  • the order of the separation is not limited to it.
  • the scroll member 20 which is separated from the dies in order of the scroll wall 22 , the base plate 21 , and protrusions 37 , 38 , is also applied.
  • an additional driving apparatus for moving the sub dies 13 b upwardly is required in addition to the cylinder actuators or other reciprocating actuators for moving the sub dies 13 b in the respective directions B.
  • the number of the divided pieces of the cope 13 and the shape of the cope 13 are not limited to the embodiment described above. Not hindering the main die 13 a and the sub dies 13 b , which constitute the cope 13 , from separating from each other, any structure may be applied.
  • the cope 13 and the drag 3 are vertically disposed.
  • the cope 13 and the drag 3 may be disposed horizontally.
  • the driving apparatus for operating the cope 13 is the cylinder actuator or other reciprocating actuator.
  • the driving apparatus is not limited to it.
  • a robot arm may be substituted for the cylinder actuator or other reciprocating actuator.
  • the scroll member is used in a compressor for an air conditioner of a vehicle.
  • the scroll member may be used in another compressor other than the compressor for the air conditioner of the vehicle as far as the compressor is a scroll type.
  • the end of the scroll wall of the scroll member cast by the casting apparatus ensures a flat end surface, the time and process for machining the end surface of the scroll wall is reduced or cut.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Pumps (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
US10/124,546 2001-04-17 2002-04-16 Apparatus for casting scroll member and method of manufacturing scroll member Abandoned US20020148592A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001-117587 2001-04-17
JP2001117587A JP2002310074A (ja) 2001-04-17 2001-04-17 圧縮機用スクロールの鋳造装置及びスクロール

Publications (1)

Publication Number Publication Date
US20020148592A1 true US20020148592A1 (en) 2002-10-17

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US10/124,546 Abandoned US20020148592A1 (en) 2001-04-17 2002-04-16 Apparatus for casting scroll member and method of manufacturing scroll member

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US (1) US20020148592A1 (de)
JP (1) JP2002310074A (de)
DE (1) DE10216825A1 (de)
FR (1) FR2823456A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100346075C (zh) * 2004-10-21 2007-10-31 恒升精密科技股份有限公司 压缩机的涡卷加工方法
US20110088863A1 (en) * 2008-06-20 2011-04-21 Daikin Industries, Ltd. Mold and molding manufacturing method
US20110100581A1 (en) * 2008-06-27 2011-05-05 Daikin Industries, Ltd. Semimolten or semi solid molding mehtod and molding apparatus
CN102481628A (zh) * 2009-09-03 2012-05-30 大金工业株式会社 半熔融或半凝固成形法
US20170002811A1 (en) * 2015-06-30 2017-01-05 Bitzer Kuehlmaschinenbau Gmbh Cast-in offset fixed scroll intake opening
US10328544B2 (en) 2015-08-14 2019-06-25 Danfoss (Tianjin) Ltd. Scroll machining method and scroll machining apparatus
CN112222374A (zh) * 2020-10-25 2021-01-15 沈阳工业大学 一种半固态流变压铸卡车后处理支架的浇注系统

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4515075B2 (ja) * 2003-11-07 2010-07-28 株式会社デンソー 内燃機関用スロットル装置の射出成形方法
JP4211574B2 (ja) * 2003-11-07 2009-01-21 株式会社デンソー 内燃機関用スロットル装置の成形方法
JP4821526B2 (ja) * 2006-03-02 2011-11-24 ダイキン工業株式会社 圧縮機のスクロール部材およびそれを用いた圧縮機
JP2011058500A (ja) * 2010-10-25 2011-03-24 Daikin Industries Ltd スクロール部材用成形型
JP5798776B2 (ja) * 2011-04-04 2015-10-21 株式会社 寿原テクノス 金型装置
CN102423797A (zh) * 2011-10-25 2012-04-25 苏州三基铸造装备股份有限公司 金属特种成型技术中的金属压铸机合模锁模分模方法及其机构
CN109622913A (zh) * 2017-10-08 2019-04-16 江苏新佳晨精密机械科技有限公司 一种智能全立式冷压室压铸机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05169225A (ja) * 1991-12-25 1993-07-09 Atsugi Unisia Corp 金型成形装置
JPH06210426A (ja) * 1992-03-04 1994-08-02 Mitsubishi Electric Corp 鋳物の製造方法及び製造装置
US5392512A (en) * 1993-11-02 1995-02-28 Industrial Technology Research Institute Method for fabricating two-piece scroll members by diecasting
JP3785646B2 (ja) * 1994-12-02 2006-06-14 株式会社デンソー 圧縮機用スクロール鋳造方法およびその鋳造装置

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100346075C (zh) * 2004-10-21 2007-10-31 恒升精密科技股份有限公司 压缩机的涡卷加工方法
US20110088863A1 (en) * 2008-06-20 2011-04-21 Daikin Industries, Ltd. Mold and molding manufacturing method
EP2305398A4 (de) * 2008-06-20 2017-04-12 Daikin Industries, Ltd. Formwerkzeug und verfahren zur herstellung von gussteilen
US8607846B2 (en) * 2008-06-20 2013-12-17 Daikin Industries, Ltd. Mold and molding manufacturing method
US8708030B2 (en) 2008-06-20 2014-04-29 Daikin Industries, Ltd. Mold
US8622114B2 (en) * 2008-06-27 2014-01-07 Daikin Industries, Ltd. Semimolten or semi solid molding method and molding apparatus
US20110100581A1 (en) * 2008-06-27 2011-05-05 Daikin Industries, Ltd. Semimolten or semi solid molding mehtod and molding apparatus
US8297339B2 (en) 2009-09-03 2012-10-30 Daikin Industries, Ltd. Semi-molten or semi-solid molding method
CN102481628B (zh) * 2009-09-03 2013-12-25 大金工业株式会社 半熔融或半凝固成形法
CN102481628A (zh) * 2009-09-03 2012-05-30 大金工业株式会社 半熔融或半凝固成形法
US20170002811A1 (en) * 2015-06-30 2017-01-05 Bitzer Kuehlmaschinenbau Gmbh Cast-in offset fixed scroll intake opening
US9890784B2 (en) * 2015-06-30 2018-02-13 Bitzer Kuehlmaschinenbau Gmbh Cast-in offset fixed scroll intake opening
EP3317542A4 (de) * 2015-06-30 2019-04-03 Bitzer Kühlmaschinenbau GmbH Ansaugöffnung mit eingegossener versetzt befestigter spiral
EP3699432A1 (de) * 2015-06-30 2020-08-26 BITZER Kühlmaschinenbau GmbH Ansaugöffnung mit eingegossener versetzt befestigter spirale
US10328544B2 (en) 2015-08-14 2019-06-25 Danfoss (Tianjin) Ltd. Scroll machining method and scroll machining apparatus
CN112222374A (zh) * 2020-10-25 2021-01-15 沈阳工业大学 一种半固态流变压铸卡车后处理支架的浇注系统

Also Published As

Publication number Publication date
FR2823456A1 (fr) 2002-10-18
DE10216825A1 (de) 2002-10-31
JP2002310074A (ja) 2002-10-23

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Legal Events

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AS Assignment

Owner name: KABUSHIKI KAISHA TOYOTA JIDOSHOKI, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MORI, TATSUSHI;IGUCHI, MASAO;FUJITA, YOSHIO;AND OTHERS;REEL/FRAME:012825/0694

Effective date: 20020402

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION