CN208303843U - It is a kind of for pressure cast aluminum-alloy wheel when reduce defect mold - Google Patents
It is a kind of for pressure cast aluminum-alloy wheel when reduce defect mold Download PDFInfo
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- CN208303843U CN208303843U CN201820398197.2U CN201820398197U CN208303843U CN 208303843 U CN208303843 U CN 208303843U CN 201820398197 U CN201820398197 U CN 201820398197U CN 208303843 U CN208303843 U CN 208303843U
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Abstract
The utility model provide it is a kind of for pressure cast aluminum-alloy wheel when reduce defect mold, the mold includes backform, side mode and bed die, the backform is disposed over and is set as completing the back chamber of wheel, bed die is arranged in the lower section of backform and is set as completing the front wheel disc moulding of wheel, the side of backform and bed die is arranged in side mode, and backform, side mode and bed die surround out the casting mold cavity of aluminum-alloy wheel jointly；The upper surface of the bed die includes the depressed section for being used to form spoke and the projection section for being used to form window；Described being used to form includes cooling pipe in the projection section of window.The mold of the utility model makes the spot shrinkage defect of wheel casting reduce 40%, and wheel rim stomata problem reduces 30%, greatly improves yield rate, reduces production cost, ensure that the high quality of production of wheel.
Description
Technical field
The present invention relates to casting fields, more particularly to a kind of low-pressure casting die of aluminium alloy wheel structure.
Background technique
In the production of aluminum-alloy wheel low pressure casting, shrinkage porosite and stomata are two kinds of relatively common casting flaws, caused by
Waste product is up to 80% of toatl proportion or more.When high temperature aluminum liquid filling type, entire mold is in open atmospheric environment, type chamber
If interior air cannot smoothly be excluded completely, will assemble at the distal rim of casting, and be finally wrapped in molten aluminum
Portion can not escape in solidification and form gas hole defect；The existing harm of stomata is the effective sectional area for reducing product, is reduced
The security performance of wheel rim；Spoke and the root R Angle Position of wheel rim handover are apparent casting thermal centers, and the spoke of front end acts as
The role of Feeding channel will guarantee have enough heats that can maintain the unimpeded of channel in process of setting, strong to thermal center to be formed
Strong feeding；Spoke position will maintain a relatively high temperature levels, and otherwise R Angle Position is just easy to will appear contracting
The defects of pine, shrinkage cavity；Meanwhile lower solidification rate will cause cast-internal coarse grains, tissue is not fine and close, has damaged casting
Mechanical property, can not meet the strict demand of client.
In actual production, the serious forming quality for affecting wheel casting of the above problem, reduces yield rate,
It is therefore desirable to take certain measure to be optimized and improve, asked with solving bleb, shrinkage porosite, shrinkage cavity, coarse grains etc.
Topic, to realize the high quality of production of wheel.
Summary of the invention
Present invention aim to address the deficiencies in the prior art, propose a kind of improved low pressure casting aluminum alloy
Wheel die structure；By designing gas outlet channels, leaving area is increased, the exhaust effect of type chamber is enhanced, makes casting
Gas hole defect is greatly decreased；The temperature of bed die is improved, strength feeding of the spoke to thermal center is ensure that, eliminates the contracting at thermal center
The casting flaws such as pine, shrinkage cavity, improve yield rate；Meanwhile there has also been largely promoted for the mechanical property of casting.
In one aspect of the invention, provide it is a kind of for pressure cast aluminum-alloy wheel when reduce defect mold,
The mold includes backform, side mode and bed die, and the backform is disposed over and is set as completing the back chamber of wheel, bottom
Mould is arranged in the lower section of backform and is set as completing the front wheel disc moulding of wheel, and the side of backform and bed die is arranged in side mode
Face, backform, side mode and bed die surround out the casting mold cavity of aluminum-alloy wheel jointly；It is characterized in that, the upper table of the bed die
Face includes the depressed section for being used to form spoke and the projection section for being used to form window, and the depth of the backform makes wheel hub
Type chamber is 1-2mm higher than scheduled wheel hub blank；The backform is in the boss portion for being used to form window with bed die upper surface
Part joined together by point includes assembly groove body, and the assembly groove body extends out 2-3mm, and fitting groove on the basis of projection section
There is the gap of 0.2-0.5mm between the top surface and projection section of body；Described being used to form in the projection section of window include
Cooling pipe.
In currently preferred aspect, the bed die back side be turnery processing at revolving body cavity, and bed die
Wall thickness is 20-25mm.
In currently preferred aspect, the cooling pipe is the circular hole through bed die.
In currently preferred aspect, the diameter of the circular hole is 3-5mm, and is spaced each other as 3-6mm.
In currently preferred aspect, the diameter 4mm of the circular hole, and it is spaced each other as 4mm.
Exhaust pipe is welded at the both ends of currently preferred aspect, the circular hole.
Do not justify within the scope of currently preferred aspect, the projection section edge 5mm for being used to form window
Hole.
The configuration of the present invention is simple, the advantage is that: machined profile-followed assembly for the position of window boss in bed die back chamber
Groove body reduces the heat absorption capacity of thick big chill；Thermal insulation material is filled up in slot, further prevents dissipating for mold heat
It loses, has delayed the cooling at spoke position, ensure that thermal center smoothly molten aluminum feeding；Machining small and row has been welded on boss
Feed channel realizes effective connection of type chamber and external environment, increases leaving area, creates one for aluminum liquid filling type solidification
Cleaner mold environment.The application of novel die structure makes the spot shrinkage defect of wheel casting reduce 40%, wheel rim
Stomata problem reduces 30%, greatly improves yield rate, reduces production cost, ensure that the high quality of production of wheel.
Detailed description of the invention
Hereinafter, carrying out the embodiment that the present invention will be described in detail in conjunction with attached drawing, in which:
Fig. 1 is mesolow casting aluminum vehicle wheel mold structure diagram of the present invention.
Fig. 2 is the structural schematic diagram of bed die in the present invention.
In figure: 1-backform；11-assembly groove bodies；2-side modes；3-bed dies；31-projection sections；32-cooling cavities；
33-profile-followed slots；34-exhaust vents；4-heat preservation asbestos；5-sheet irons；6-exhaust pipes.
Specific embodiment
Fig. 1,2 disclose a kind of improved pressure cast aluminum-alloy wheel mould structure in the present invention, including backform (1),
Side mode (2), bed die (3), heat preservation asbestos (4), sheet iron (5), exhaust pipe (6)；
Wherein: backform (1) is disposed over, to shape wheel back chamber and interior wheel rim moulding；Bed die (3) is arranged in top
The downside of mould (1), guarantees the front pose of wheel；And side mode (2) is then intermediate in backform (1) and bed die (3), completes outer rim portion
The forming of position；Three together constitutes the type chamber of wheel casting, it is ensured that product precision smoothly forming.
The front pose of wheel is divided into spoke and window two parts, in order to complete the forming at window position, on bed die (1)
Boss structure (31) are designed, side is consistent with product-forming, and top surface profile line is then higher by back chamber machine ledger line 1-2mm；Top
Assembly assembly groove body (11) is processed on mould (1) accordingly, side extends out 2-3mm on the basis of boss (31), and top surface is wanted
There are the fit clearances of 0.2-0.5mm with boss, cannot contact.
In order to arrange cooling pipe, cavity structure (32) are processed at bed die (3) back side, are processed into back using turning process
Swivel reduces production cost to reduce production working hour；Cavity (32) bottom surface is designed as 20-25mm away from front pose wall thickness,
To guarantee enough mold heat absorption capacities.
Process profile-followed slot (33) in the back side of bed die projection section (31), side wall thickness depending on wide, the narrow moulding of spoke,
Generally take between 15-20mm；To guarantee that uniform wall thickness is consistent, preferentially made of milling process；The top surface of profile-followed slot (33)
Wall thickness is designed as 3-6mm, reduces the heat absorption of mold, guarantees the use intensity of mold；Rounding off between each joint face inside slot,
Chamfering R5-8mm；Fill up asbestos (4) or other thermal insulation materials in the profile-followed slot (33), and with sheet iron (5) welded seal, with
Closed heat-insulated cavity is formed, scattering and disappearing for mold heat is weakened；
In the top surface of bed die boss (31), processing runs through small sircle hole (34), and aperture isIt is uniformly distributed to be spaced 4mm, specifically
Number is depending on the size of top surface；Aperture on the outermost side, it is ensured that away from boss edge > 5mm, to prevent high temperature aluminum
The inflow of liquid and block；Exhaust pipe (6) are welded on aperture, outer diameter is consistent with aperture, and the part of prominent top surface will polish flat,
It avoids influencing to mold, and bottom end will then extend on the outside of iron sheet, to realize the connection with atmosphere, guarantee type chamber air is smoothly
Export.
The configuration of the present invention is simple, the advantage is that: machined profile-followed assembly for the position of window boss in bed die back chamber
Groove body reduces the heat absorption capacity of thick big chill；Thermal insulation material is filled up in slot, further prevents dissipating for mold heat
It loses, has delayed the cooling at spoke position, ensure that thermal center smoothly molten aluminum feeding；Machining small and row has been welded on boss
Feed channel realizes effective connection of type chamber and external environment, increases leaving area, creates one for aluminum liquid filling type solidification
Cleaner mold environment.The application of novel die structure makes the spot shrinkage defect of wheel casting reduce 40%, wheel rim
Stomata problem reduces 30%, greatly improves yield rate, reduces production cost, ensure that the high quality of production of wheel.
Claims (7)
1. it is a kind of for pressure cast aluminum-alloy wheel when reduce defect mold, the mold includes backform, side mode and bottom
Mould, the backform are disposed over and are set as completing the back chamber of wheel, and the lower section of backform and setting is arranged in bed die
For the front wheel disc moulding for completing wheel, the side of backform and bed die is arranged in side mode, and backform, side mode and bed die surround out jointly
The casting mold cavity of aluminum-alloy wheel；It is characterized in that, the upper surface of the bed die includes the depressed section for being used to form spoke
With the projection section for being used to form window, the depth of the backform makes hub type chamber 1- higher than scheduled wheel hub blank
2mm；Backform part joined together by the projection section for being used to form window with bed die upper surface includes assembly groove body,
The assembly groove body extends out 2-3mm on the basis of projection section, and assembles between the top surface of groove body and projection section and have
The gap of 0.2-0.5 mm；Described being used to form includes cooling pipe in the projection section of window.
2. the mold according to claim 1 for being used to reduce defect when pressure cast aluminum-alloy wheel, which is characterized in that institute
The bed die back side stated be turnery processing at revolving body cavity, and the wall thickness of bed die be 20-25 mm.
3. the mold according to claim 1 for being used to reduce defect when pressure cast aluminum-alloy wheel, which is characterized in that institute
The cooling pipe stated is the circular hole through bed die.
4. the mold according to claim 3 for being used to reduce defect when pressure cast aluminum-alloy wheel, which is characterized in that institute
The diameter for the circular hole stated is 3-5 mm, and is spaced each other as 3-6 mm.
5. the mold according to claim 3 for being used to reduce defect when pressure cast aluminum-alloy wheel, which is characterized in that institute
The diameter 4mm for the circular hole stated, and be spaced each other as 4mm.
6. the mold according to claim 3 for being used to reduce defect when pressure cast aluminum-alloy wheel, which is characterized in that institute
The both ends for the circular hole stated are welded with exhaust pipe.
7. the mold according to claim 1 for being used to reduce defect when pressure cast aluminum-alloy wheel, which is characterized in that institute
Without circular hole within the scope of 5 mm of projection section edge for being used to form window stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820398197.2U CN208303843U (en) | 2018-03-23 | 2018-03-23 | It is a kind of for pressure cast aluminum-alloy wheel when reduce defect mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820398197.2U CN208303843U (en) | 2018-03-23 | 2018-03-23 | It is a kind of for pressure cast aluminum-alloy wheel when reduce defect mold |
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| Publication Number | Publication Date |
|---|---|
| CN208303843U true CN208303843U (en) | 2019-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820398197.2U Active CN208303843U (en) | 2018-03-23 | 2018-03-23 | It is a kind of for pressure cast aluminum-alloy wheel when reduce defect mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108555267A (en) * | 2018-03-23 | 2018-09-21 | 中信戴卡股份有限公司 | A kind of mold being used to reduce defect when pressure cast aluminum-alloy wheel |
-
2018
- 2018-03-23 CN CN201820398197.2U patent/CN208303843U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108555267A (en) * | 2018-03-23 | 2018-09-21 | 中信戴卡股份有限公司 | A kind of mold being used to reduce defect when pressure cast aluminum-alloy wheel |
| CN108555267B (en) * | 2018-03-23 | 2020-01-14 | 中信戴卡股份有限公司 | Mold for reducing defects during low-pressure casting of aluminum alloy wheel |
| US10654099B2 (en) | 2018-03-23 | 2020-05-19 | Citic Dicastal Co., Ltd. | Mold for reducing defects in low pressure casting of aluminum alloy wheel |
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