US20180001374A1 - Central Heat-insulation Hole Structure for Wheel Water-cooling Mold - Google Patents

Central Heat-insulation Hole Structure for Wheel Water-cooling Mold Download PDF

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Publication number
US20180001374A1
US20180001374A1 US15/640,701 US201715640701A US2018001374A1 US 20180001374 A1 US20180001374 A1 US 20180001374A1 US 201715640701 A US201715640701 A US 201715640701A US 2018001374 A1 US2018001374 A1 US 2018001374A1
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United States
Prior art keywords
heat
insulation
mold
insulation hole
central
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Abandoned
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US15/640,701
Inventor
Xu Wang
Guohua Liu
Kaiqing Wang
Junmeng Li
Xianyi Xu
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Citic Dicastal Co Ltd
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Citic Dicastal Co Ltd
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Assigned to CITIC DICASTAL CO., LTD reassignment CITIC DICASTAL CO., LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LI, JUNMENG, LIU, GUOHUA, WANG, KAIQING, WANG, XU, XU, XIANYI
Publication of US20180001374A1 publication Critical patent/US20180001374A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/22—Moulds for peculiarly-shaped castings
    • B22C9/28—Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/06—Permanent moulds for shaped castings
    • B22C9/065—Cooling or heating equipment for moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould

Definitions

  • the present invention relates to a low-pressure casting water-cooling mold structure for a wheel.
  • Low-pressure casting water-cooling molds are further widely applied to wheel manufacturing enterprises in recent years in order to improve the interior quality of wheel products to meet the product requirements of customers and improve the production efficiency of the wheel products to increase the production capacity of the wheel manufacturing enterprises.
  • the water-cooling molds have different cooling modes and structure features from air-cooling molds, and the most difference is the existence of multiple split mold structures for controlling water cooled areas in a casting process, so the manufacturing costs of the water-cooling molds are relatively much higher than those of the air-cooling molds.
  • the more split units of the mold are the higher the possibility of parting surfaces to generate corrosion, flashes and aluminum pickup is; and additionally, the continuity of a casting process and the casting quality are influenced.
  • An object of the present invention is to solve and improve the problem of the prior art, and provide a mold structure capable of reducing manufacturing costs of a water-cording mold, improving the stability of a casting process, and reducing corrosion, flash and aluminum pickup problems.
  • a split unit structure including a top mold and central flange loose pieces is changed into a non-split integrated top mold. Besides, a circle of uniformly distributed heat-insulation holes are formed in a circumferential direction of the position of a mold split unit parting surface of the original top mold and the central flange loose pieces.
  • the diameter of each heat-insulation hole is locked as 8 mm
  • the size of a wheel flange defines the number of the heat-insulation holes and the diameter of a circumference of the heat-insulation holes distributed in the integrated top mold, and in order to ensure the service life and water cooling and heat insulation effects of the mold, the depth of each heat-insulation hole from the surface of a cavity is more than 20 mm.
  • the central heat-insulation hole structure provided by the present invention has the advantages that water cooled areas can be effectively controlled, the sequential solidification of a casting process is guaranteed, the heat insulation effect of a split mold is achieved, a mold deformation problem of the split mold is avoided, and meanwhile, the corrosion, flash and aluminum pickup problems caused by the existence of the split unit parting surface are also completely avoided.
  • the heat-insulation hole structure provided by the present invention is simple and feasible; and by utilizing a machining mode of perforating the integrated top mold, the manufacturing costs and the manufacturing difficulty of the mold are largely reduced, the machining and manufacturing efficiency of the mold is also improved, and the difficulty of later-stage maintenance of the mold is reduced.
  • FIG. 1 is a structure diagram of an original top mold water-cooling split unit in the background art.
  • FIG. 2 is a diagram of a central heat-insulation hole structure for a water-cooling top mold, provided by the present invention.
  • FIG. 3 is a top view of a central heat-insulation hole structure for a water-cooling top mold, provided by the present invention.
  • FIG. 4 is a bottom view of a central heat-insulation hole structure for a water-cooling top mold, provided by the present invention
  • a machining and manufacturing method for a mold provided by the present invention is simple, wherein a split unit structure design including an original split top mold 2 and central flange loose pieces 4 is changed into a non-split integrated top mold 9 . Besides, the position of a mold split unit parting surface 8 of the original top mold 2 and the central flange loose pieces 4 is replaced by a circle of uniformly distributed heat-insulation holes 10 perforated in a circumferential direction.
  • each heat-insulation hole 10 In order to standardize the diameter of each heat-insulation hole 10 for machining, the diameter of each heat-insulation hole is unified to be 8 mm, and the size of a wheel type defines the number of the heat-insulation holes and the diameter of a circumference of the heat-insulation holes 10 distributed in the integrated top mold 9 .
  • the diameter of a flange is 140 mm
  • the diameter of the circumference of the heat-insulation holes distributed in the top mold is 180 mm
  • the number of the uniformly distributed heat-insulation holes is 70
  • the depth of each heat-insulation hole from the surface of the cavity is 20 mm.
  • the diameter of a flange is 165 mm
  • the diameter of the circumference of the heat-insulation holes distributed in the top mold is 210 mm
  • the number of the uniformly distributed heat-insulation holes is 80
  • the depth of each heat-insulation hole from the surface of the cavity is 22 mm.
  • the diameter of a flange is 180 mm
  • the diameter of the circumference of the heat-insulation holes distributed in the top mold is 220 mm
  • the number of the uniformly distributed heat-insulation holes is 90
  • the depth of each heat-insulation hole from the surface of the cavity is 24 mm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

A central heat-insulation hole structure for an aluminum wheel low-pressure water-cooling casting mold. The structure includes a top mold and a central heat-insulation hole. A split unit structure including a top mold and central flange loose pieces is changed into a non-split integrated top mold. Besides, a circle of uniformly distributed heat-insulation holes are thrilled in a circumferential direction of the position of a mold split unit parting surface of the original top mold and the central flange loose pieces. The diameter of each heat-insulation hole is 8 mm, the size of a wheel flange defines the number of the heat-insulation holes and the diameter of circumference of the heat-insulation holes distributed in the integrated top mold, and in order to ensure the service life and water cooling and heat insulation effects of the mold, the depth of each heat-insulation hole from the surface of a cavity is more than 20 mm.

Description

    TECHNICAL FIELD
  • The present invention relates to a low-pressure casting water-cooling mold structure for a wheel.
    • BACKGROUND ART
  • Low-pressure casting water-cooling molds are further widely applied to wheel manufacturing enterprises in recent years in order to improve the interior quality of wheel products to meet the product requirements of customers and improve the production efficiency of the wheel products to increase the production capacity of the wheel manufacturing enterprises. However, the water-cooling molds have different cooling modes and structure features from air-cooling molds, and the most difference is the existence of multiple split mold structures for controlling water cooled areas in a casting process, so the manufacturing costs of the water-cooling molds are relatively much higher than those of the air-cooling molds. Furthermore, from a casting technique perspective, the more split units of the mold are, the higher the possibility of parting surfaces to generate corrosion, flashes and aluminum pickup is; and additionally, the continuity of a casting process and the casting quality are influenced.
  • As the yield of the wheels is increasing and the application of a low-pressure water-cooling casting technique becomes a necessary trend, the enterprises have to face a problem how to effectively and reasonably reduce the manufacturing costs of the water-cooling molds and ensure the stable production of the casting process on the premise of ensuring the smooth implementation of the water-cooling technique during production.
    • SUMMARY OF THE INVENTION
  • An object of the present invention is to solve and improve the problem of the prior art, and provide a mold structure capable of reducing manufacturing costs of a water-cording mold, improving the stability of a casting process, and reducing corrosion, flash and aluminum pickup problems.
  • A technical solution of the present invention is as follows: a central heat-insulation hole structure for an aluminum wheel low-pressure water-cooling casting meld comprises a top mold and a central heat-insulation hole.
  • A split unit structure including a top mold and central flange loose pieces is changed into a non-split integrated top mold. Besides, a circle of uniformly distributed heat-insulation holes are formed in a circumferential direction of the position of a mold split unit parting surface of the original top mold and the central flange loose pieces. The diameter of each heat-insulation hole is locked as 8 mm, the size of a wheel flange defines the number of the heat-insulation holes and the diameter of a circumference of the heat-insulation holes distributed in the integrated top mold, and in order to ensure the service life and water cooling and heat insulation effects of the mold, the depth of each heat-insulation hole from the surface of a cavity is more than 20 mm.
  • The central heat-insulation hole structure provided by the present invention has the advantages that water cooled areas can be effectively controlled, the sequential solidification of a casting process is guaranteed, the heat insulation effect of a split mold is achieved, a mold deformation problem of the split mold is avoided, and meanwhile, the corrosion, flash and aluminum pickup problems caused by the existence of the split unit parting surface are also completely avoided. The heat-insulation hole structure provided by the present invention is simple and feasible; and by utilizing a machining mode of perforating the integrated top mold, the manufacturing costs and the manufacturing difficulty of the mold are largely reduced, the machining and manufacturing efficiency of the mold is also improved, and the difficulty of later-stage maintenance of the mold is reduced.
    • BRIEF DESCRIPTION OF DRAWINGS
  • FIG. 1 is a structure diagram of an original top mold water-cooling split unit in the background art.
  • FIG. 2 is a diagram of a central heat-insulation hole structure for a water-cooling top mold, provided by the present invention.
  • FIG. 3. is a top view of a central heat-insulation hole structure for a water-cooling top mold, provided by the present invention.
  • FIG. 4 is a bottom view of a central heat-insulation hole structure for a water-cooling top mold, provided by the present invention,
    •
  • In the figure, numeric symbols are as follows: 1—cooling pressure plate, 2—split top mold, 3—cooling water channel, 4—central flange loose piece, 5—wheel, 6—sprue spreader, 7—bolt, 8—mold split unit parting surface, 9—integrated top mold, and 10—heat-insulation hole.
    • DETAILED DESCRIPTION OF THE INVENTION
  • The following further describes the present invention in combination with figures and embodiments.
  • A machining and manufacturing method for a mold provided by the present invention is simple, wherein a split unit structure design including an original split top mold 2 and central flange loose pieces 4 is changed into a non-split integrated top mold 9. Besides, the position of a mold split unit parting surface 8 of the original top mold 2 and the central flange loose pieces 4 is replaced by a circle of uniformly distributed heat-insulation holes 10 perforated in a circumferential direction. In order to standardize the diameter of each heat-insulation hole 10 for machining, the diameter of each heat-insulation hole is unified to be 8 mm, and the size of a wheel type defines the number of the heat-insulation holes and the diameter of a circumference of the heat-insulation holes 10 distributed in the integrated top mold 9.
    • Embodiment 1
  • for a wheel, of 16 inches, the diameter of a flange is 140 mm, the diameter of the circumference of the heat-insulation holes distributed in the top mold is 180 mm, the number of the uniformly distributed heat-insulation holes is 70, and the depth of each heat-insulation hole from the surface of the cavity is 20 mm.
  • Embodiment 2
  • car a wheel of 17 inches, the diameter of a flange is 165 mm, the diameter of the circumference of the heat-insulation holes distributed in the top mold is 210 mm, the number of the uniformly distributed heat-insulation holes is 80, and the depth of each heat-insulation hole from the surface of the cavity is 22 mm.
  • Embodiment 3
  • for a wheel of 18 inches, the diameter of a flange is 180 mm, the diameter of the circumference of the heat-insulation holes distributed in the top mold is 220 mm, the number of the uniformly distributed heat-insulation holes is 90, and the depth of each heat-insulation hole from the surface of the cavity is 24 mm.

Claims (4)

1. A central heat-insulation hole structure for an aluminum wheel low-pressure water-cooling casting mold, comprising;
atop mold and a central heat-insulation hole;
wherein a split unit structure including a top mold and central flange loose pieces is changed into a non-split integrated top mold, a circle of uniformly distributed heat-insulation holes are formed in a circumferential direction of the position of a mold split unit parting surface of the original top mold and the central flange loose pieces, the diameter of each heat-insulation hole is 8 mm, and depth of each heat-insulation hole from the surface of a cavity is more than 20 mm.
2. The central heat-insulation hole structure for the aluminum wheel low-pressure water-cooling casting mold according to claim 1, wherein for a wheel of 16 inches, the diameter of a flange is 140 mm, the diameter of the circumference of the heat-insulation holes distributed in the top mold is 180 mm, the number of the uniformly distributed heat-insulation holes is 70, and the depth of each heat insulation hole from the surface of the cavity is 20 mm.
3. The central heat-insulation hole structure for the aluminum wheel low-pressure water-cooling casting mold according to claim 1, wherein for a wheel of 17 inches, the diameter of a flange is 165 mm, the diameter of the circumference of the heat-insulation holes distributed in the top mold is 210 mm, the number of the uniformly distributed heat-insulation holes is 80, and the depth of each heat-insulation hole from the surface of the cavity is 22 mm.
4. The central heat-insulation hole structure for the aluminum wheel low-pressure water-cooling casting mold according to claim 1, wherein for a wheel of 18 inches, the diameter of a flange is 180 mm, the diameter of the circumference of the heat-insulation holes distributed in the top mold is 220 mm, the number of the uniformly distributed heat-insulation holes is 90, and the depth of each heat-insulation hole from the surface of the cavity is 24 mm.
US15/640,701 2016-07-03 2017-07-03 Central Heat-insulation Hole Structure for Wheel Water-cooling Mold Abandoned US20180001374A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610509209.X 2016-07-03
CN201610509209.XA CN106001500A (en) 2016-07-03 2016-07-03 Central heat-insulating hole structure of vehicle wheel water-cooling mold

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108080601A (en) * 2017-12-31 2018-05-29 北京航空航天大学 A kind of low-pressure charging casting machine fills the casting device and casting method of type High Pressure Solidification with low pressure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203565824U (en) * 2013-11-26 2014-04-30 中信戴卡股份有限公司 Improved wheel mould
CN203875309U (en) * 2014-04-11 2014-10-15 滨州盟威戴卡轮毂有限公司 Double-heat-insulation hub die-casting mould
CN104353813A (en) * 2014-09-12 2015-02-18 中信戴卡股份有限公司 Aluminum wheel water cooling low-pressure casting die and technology

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090065170A1 (en) * 2007-09-11 2009-03-12 Honda Motor Co., Ltd. Die cooling apparatus and method thereof
CN103386465A (en) * 2013-08-21 2013-11-13 中信戴卡股份有限公司 Preset temperature field metallic mold
CN205702393U (en) * 2016-07-03 2016-11-23 中信戴卡股份有限公司 A kind of wheel water cooling mold center insulation hole structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203565824U (en) * 2013-11-26 2014-04-30 中信戴卡股份有限公司 Improved wheel mould
CN203875309U (en) * 2014-04-11 2014-10-15 滨州盟威戴卡轮毂有限公司 Double-heat-insulation hub die-casting mould
CN104353813A (en) * 2014-09-12 2015-02-18 中信戴卡股份有限公司 Aluminum wheel water cooling low-pressure casting die and technology

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