U.S. patent application number 15/640701 was filed with the patent office on 2018-01-04 for central heat-insulation hole structure for wheel water-cooling mold.
This patent application is currently assigned to CITIC Dicastal CO., LTD. The applicant listed for this patent is CITIC Dicastal CO., LTD. Invention is credited to Junmeng Li, Guohua Liu, Kaiqing Wang, Xu Wang, Xianyi Xu.
Application Number | 20180001374 15/640701 |
Document ID | / |
Family ID | 57105687 |
Filed Date | 2018-01-04 |
United States Patent
Application |
20180001374 |
Kind Code |
A1 |
Wang; Xu ; et al. |
January 4, 2018 |
Central Heat-insulation Hole Structure for Wheel Water-cooling
Mold
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.
Inventors: |
Wang; Xu; (Qinhuangdao,
CN) ; Liu; Guohua; (Qinhuangdao, CN) ; Wang;
Kaiqing; (Qinhuangdao, CN) ; Li; Junmeng;
(Qinhuangdao, CN) ; Xu; Xianyi; (Qinhuangdao,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
CITIC Dicastal CO., LTD |
Qinhuangdao |
|
CN |
|
|
Assignee: |
CITIC Dicastal CO., LTD
Qinhuangdao
CN
|
Family ID: |
57105687 |
Appl. No.: |
15/640701 |
Filed: |
July 3, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B22D 18/04 20130101;
B22C 9/065 20130101; B22C 9/28 20130101 |
International
Class: |
B22C 9/28 20060101
B22C009/28; B22D 18/04 20060101 B22D018/04; B22C 9/06 20060101
B22C009/06 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 3, 2016 |
CN |
201610509209.X |
Claims
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.
Description
TECHNICAL FIELD
[0001] The present invention relates to a low-pressure casting
water-cooling mold structure for a wheel.
BACKGROUND ART
[0002] 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.
[0003] 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
[0004] 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.
[0005] 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.
[0006] 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.
[0007] 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
[0008] FIG. 1 is a structure diagram of an original top mold
water-cooling split unit in the background art.
[0009] FIG. 2 is a diagram of a central heat-insulation hole
structure for a water-cooling top mold, provided by the present
invention.
[0010] FIG. 3. is a top view of a central heat-insulation hole
structure for a water-cooling top mold, provided by the present
invention.
[0011] FIG. 4 is a bottom view of a central heat-insulation hole
structure for a water-cooling top mold, provided by the present
invention,
[0012] 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
[0013] The following further describes the present invention in
combination with figures and embodiments.
[0014] 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
[0015] 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.
[0016] Embodiment 2
[0017] 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.
[0018] Embodiment 3
[0019] 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.
* * * * *