CN201922023U - Low-pressure casting mold for aluminum alloy wheel - Google Patents
Low-pressure casting mold for aluminum alloy wheel Download PDFInfo
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- CN201922023U CN201922023U CN2010206654711U CN201020665471U CN201922023U CN 201922023 U CN201922023 U CN 201922023U CN 2010206654711 U CN2010206654711 U CN 2010206654711U CN 201020665471 U CN201020665471 U CN 201020665471U CN 201922023 U CN201922023 U CN 201922023U
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- alloy wheel
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Abstract
The utility model discloses a low-pressure casting mold for an aluminum alloy wheel. The low-pressure casting mold comprising a top mold (1), a bottom mold (2) and a side mold (3), wherein, a plurality of sprues (4) are formed on the bottom mold (1), a central riser (6) which plays the role of feeding is formed at the center of the top mold, a sprue spreader (7) for the formation of wheel disc center is arranged at the center of the bottom mold, and the plurality of sprues are formed on the outer side of the lower wheel lip of the bottom mold or in the position of the window of the bottom mold. The casting method comprises the steps of molding, exhausting, pressurizing, cooling, feeding and aluminum liquid backflow, etc., due the adoption of the low-pressure casting mold, the casting quality is improved, and the rib and the wheel center of the produced wheel are excellent in mechanical performance. The product is not vulnerable to needle holes. The low-pressure casting mold can meet high product quality requirements, facilitates the weight reduction of the product, increases production efficiency, and reduces mold corrosion.
Description
Technical field:
The utility model relates to the aluminium alloy casting field, specifically is a kind of aluminum-alloy wheel low pressure casting die.
Background technology:
At present, aluminum-alloy wheel blank manufacture method has forging, casting back spinning, extrusion casint (liquid forging), counter-pressure casting, low pressure casting and gravitational casting both at home and abroad.Owing to reasons such as cost of investment and technical maturity degree, domestic most employing low pressure casting and gravitational casting.The low-pressure casting process process is: in the holding furnace of sealing, the compressed air that feeds certain drying makes aluminium liquid under the effect of gas pressure, rise along stalk, enter mold cavity reposefully by cast gate, and the gas pressure on the liquid level in the maintenance holding furnace, till foundry goods solidifies fully; Remove the gas pressure on the liquid level then, make the following not solidified aluminium liquid of cast gate be back to holding furnace, again by the oil cylinder open form and take out foundry goods with the effect of gravity.The low pressure casting die of the aluminium alloy wheel hub of prior art comprises backform, bed die and Bian Mo, described bed die is provided with trumpet assembly, aluminium liquid fills the type feeding through trumpet assembly to mold cavity, adopt above-mentioned casting mould, die cavity fills the required aluminium liquid of type can only be provided by trumpet assembly, so casting objectively requires mold temperature higher when beginning; Simultaneously, aluminium liquid relies on trumpet assembly (serving as center riser this moment) feeding in the process of cooled and solidified, if mold temperature is lower, high strength is cooled off or cooling too early, defectives such as wheel hub muscle portion shrinkage porosite appear easily, in order to prevent these defectives, and should not be strong excessively, too early to the cooling of casting mould, the promptly general little type of cooling of intensity of cooling that adopts, as to adopt air-cooled be main, and what have is cold in conjunction with mist, and what have has a small amount of low intensive water-cooled.But, adopt Gao Mowen casting, low-intensity cooling or postpone the quality that cooling tends to influence foundry goods opportunity, as: the wheel rib and the core wheel mechanical performance index of production are poor, and pin hole appears in product easily; The product of producing is difficult to be applicable to the demanding occasion of product quality, is unfavorable for realizing the product lightweight, and has reduced production efficiency, has accelerated the corrosion of mould.
The utility model content:
The technical problems to be solved in the utility model is, a kind of aluminum-alloy wheel low pressure casting die is provided, and improved the quality of foundry goods, and the wheel rib and the core wheel mechanical performance index of production are good; Product is not prone to pin hole; Can be applicable to the demanding occasion of product quality, be beneficial to and realize the product lightweight, improve production efficiency, reduce the corrosion of mould.
Technical solution of the present utility model is, the aluminum-alloy wheel low pressure casting die of following structure is provided, comprise backform, bed die and Bian Mo, described bed die is provided with a plurality of cast gates, described backform center has been provided with the center riser of feeding effect, and described bed die center is provided with the branch flow cone that is used to take turns disk center's moulding.
Adopt after the above structure compared with prior art, the utlity model has following advantage: adopt the utility model structure, changed the cast gate that only is arranged on the bed die center originally, aluminium liquid enters die cavity from a plurality of cast gates during cast, a plurality of cast gates of the center riser of backform and bed die (serving as rising head this moment) can be preferably to the feeding of foundry goods different parts specific aim, the wheel rim upper limb is to the cast gate consecutive solidification, rib is to the center riser consecutive solidification simultaneously, the consecutive solidification that is this both direction can independently realize, thereby it is low to cast when initial the temperature of mould, mold cools down can be stronger more early, both improve the castability of product, improved production efficiency again.The utility model improves casting quality and is embodied in: the wheel rib and the wheel disc mechanical performance index of production are good, product is not prone to pin hole, the wheel of producing can be applicable to the demanding occasion of product quality, be beneficial to and realize that product lightweight, while have also improved production efficiency, reduced the corrosion of mould.
As improvement, described a plurality of cast gates are arranged on the bed die lower whorl lip outside or bed die window place, so more help the quick feeding of cast gate to muscle portion thermal center place.
As improvement, be provided with cooling-water duct in the described mould.Like this, establish water cooling passageway at backform, bed die and Bian Monei as required, because product of the present utility model adopts many cast gate cast and many riser feedings, so can be aided with strong cooling, be water cooling, not only improved the castability of product, and can also enhance productivity etc.
As improvement, above the center riser of backform, be provided with the pressurization blast pipe that communicates with center riser.Like this, when type was filled in cast, aluminium liquid entered die cavity, the air in the die cavity can be discharged by the pressurization blast pipe, in order to avoid air influences the product castability in the die cavity; Simultaneously, after filling that type is finished and muscle portion solidifies, feed the compressed air of certain pressure in the pressurization blast pipe, can quicken the feeding of center riser like this, improve the product castability.
As improvement, described bed die below is fixed with aluminium liquid flow dividing structure, described aluminium liquid flow dividing structure comprises top cover and pedestal, described top cover is fixed on the pedestal, be provided with cavity in the described pedestal, described cavity is communicated with a plurality of cast gates in the bed die lower whorl lip outside, and the bottom of pedestal is provided with the stalk interface.Like this, during cast, aluminium liquid enters cavity through stalk, and shunting enters a plurality of cast gates again; Type is finished when filling, behind foundry goods muscle portion and the gate solidification, will be to the burner hearth release of aluminium liquid voltage supply, aluminium liquid remaining in a plurality of cast gates is back in the cavity, and in stalk was got back to low pressure machine holding furnace, aluminium liquid flow dividing structure played shunting to aluminium liquid and refluxes.
As improvement, described cavity is a conical cavity, is convenient to the shunting and the backflow of aluminium liquid like this.
As improvement, be provided with water-cooling ring between described bed die and the Bian Mo, described water-cooling ring is meant the structure of the water circulation channel that has ring-type, because in the process of cast, aluminium liquid oozes out from bed die and Bian Mo intersection possibly, but under the effect of water-cooling ring, can solidify, thereby prevent that effectively aluminium liquid from leaking even there is aluminium liquid to ooze out also.
As improvement, the junction of described pressurization blast pipe and center riser is provided with breathable material layer, and described breathable material layer is meant that air can pass through, and the intransitable separation layer of aluminium liquid, for example air brick like this, can prevent that the middle aluminium liquid of center riser from blocking the pressurization blast pipe.
Description of drawings:
Fig. 1 is the structural representation (many cast gates are arranged on the bed die lower whorl lip outside) of the low pressure casting die of aluminium alloy wheel hub of the present utility model.
Fig. 2 is the structural representation (many cast gates are arranged on bed die window place) of the low pressure casting die of aluminium alloy wheel hub of the present utility model.
Shown in the figure 1, backform, 2, bed die, 3, the limit mould, 4, cast gate, 5, the lower whorl lip, 6, center riser, 7, divide flow cone, 8, cooling-water duct, 9, the pressurization blast pipe, 10, breathable material layer, 11, top cover, 12, pedestal, 13, cavity, 14, the stalk interface, 15, water-cooling ring.
The specific embodiment:
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
As shown in Figure 1, the low pressure casting die of aluminum-alloy wheel of the present utility model, comprise backform 1, bed die 2 and Bian Mo 3, described bed die 1 lower whorl lip 5 outsides are provided with a plurality of cast gates 4, described backform center has been provided with the center riser 6 of feeding effect, and described bed die center is provided with the branch flow cone 7 that is used to take turns disk center's moulding; Described lower whorl lip 5 is meant the lower whorl lip of die cavity inner wheel hub foundry goods; Described wheel disc is meant the wheel disc of wheel; Described cast gate is generally 2-4, establishes a cast gate for wheel disc mechanical performance index and every muscle of the demanding product needed of flaw detection.Rib and muscle portion are a notion in fact, all are meant the spoke of wheel.
Be provided with different cooling-water duct 8 in the described mould, described cooling-water duct is provided with in the mold wall, and as have a plurality of passages at die surface, the passage of the aperture of described every group of water-cooling channel in mould connects mutually; Accompanying drawing has just shown the approximate location of cooling-water duct.
Above the center riser 6 of backform 1, be provided with the pressurization blast pipe 9 that communicates with center riser 6; Described pressurization blast pipe 9 is provided with breathable material layer 10 with the junction of center riser 6, and described breathable material layer 10 is meant that air can pass through, and the intransitable separation layer of aluminium liquid is promptly nonwetting with aluminium liquid, for example air brick.
Described bed die below is fixed with aluminium liquid flow dividing structure, described aluminium liquid flow dividing structure comprises top cover 11 and pedestal 12, described top cover 11 is fixed on the pedestal 12, be provided with cavity 13 in the described pedestal 12, described cavity 13 is communicated with a plurality of cast gates 4 in the bed die 2 lower whorl lips outside, and the bottom of pedestal 12 is provided with stalk interface 14.
Described cavity 13 is a conical cavity, is convenient to the shunting and the backflow of aluminium liquid like this; In fact the cavity that has certain inclined plane can be suitable for.
Be provided with water-cooling ring 15 between described bed die 2 and the Bian Mo 3, described water-cooling ring 15 is meant the structure of the water circulation channel that has ring-type.
The far-end of pressurization blast pipe is threeway, and is provided with exhaust solenoid valve and boost electromagnetic valve; The gas of this pipeline need be reduced to suitable pressure by pressure-reducing valve, by solenoid control air inlet and exhaust.Exhaust solenoid valve is opened automatically when filling type, and boost electromagnetic valve is closed; Boost electromagnetic valve is opened during pressurization, and exhaust solenoid valve is closed.
As shown in Figure 2, described many cast gates are arranged on bed die window place, and described bed die window place is meant the position between two ribs of die cavity; This structure also can play the same effect of structure of being located at the bed die lower whorl lip outside with many cast gates.Certainly also be not limited to above-mentioned two kinds of structures.
Aluminium alloy wheel hub low-pressure casting process of the present utility model, described low-pressure casting process are based on the aluminium alloy wheel hub low pressure casting die, and described low pressure casting die comprises backform, bed die and Bian Mo, and described low-pressure casting method may further comprise the steps:
(1), the cast aluminum liquid in the die cavity of a plurality of cast gates by being arranged on the bed die lower whorl lip outside, in the cavity filling process, the pressurization blast pipe of air in the wheel disc die cavity through being positioned at backform discharged (this moment center riser pressurized control closed electromagnetic valve, exhaust control magnetic valve is opened);
(2), fill type and finish, treat that wheel hub muscle portion solidifies after, again through pressurization blast pipe and center riser to the pressurization of the aluminium liquid in the wheel disc die cavity (feed 0～800 milli compressed air, this moment, center riser pressurized control magnetic valve was opened, exhaust control closed electromagnetic valve);
(3), in different water cooling passageways, feed cooling water in good time, cooling water flows in water cooling passageway reducing mold temperature, thereby quickens the solidifying of aluminium liquid in the die cavity;
(4), when just being full of type, a plurality of cast gates on the center riser of backform and the bed die are simultaneously to the feeding a casting in the die cavity; After muscle portion solidified, center riser was to the wheel disc feeding, and cast gate is to the feeding of rib thermal center;
(5), after the aluminium liquid of the muscle portion in the die cavity and cast gate solidifies, with the holding furnace release, aluminium liquid residual in the cast gate is back under the gravity effect in the low pressure machine holding furnace.
(6) after wheel disk center solidifies, the pressurized control closed electromagnetic valve of pressurization blast pipe, exhaust control magnetic valve is opened.
In step (1), aluminium liquid enters a plurality of cast gates respectively through aluminium liquid flow dividing structure and fill type in die cavity.
Below only be described, but can not be interpreted as it is restriction claim with regard to the utility model preferred embodiment.The utility model not only is confined to above embodiment, and its concrete steps allow variation, as: aluminium liquid flow dividing structure can not wanted, and directly adopts stalk to communicate with a plurality of cast gates; Described many cast gates can also be arranged on other positions of bed die, and (as the cast gate that is located at bed die window position is opened cross gate again and is communicated with muscle portion thermal center place; also can realize the utility model function); in a word, all various variations of being done in the protection domain of the utility model independent claims are all in protection domain of the present utility model.
Claims (8)
1. aluminum-alloy wheel low pressure casting die, comprise backform (1), bed die (2) and limit mould (3), it is characterized in that: described bed die (1) is provided with a plurality of cast gates (4), described backform center has been provided with the center riser (6) of feeding effect, and described bed die center is provided with the branch flow cone (7) that is used to take turns disk center's moulding.
2. aluminum-alloy wheel low pressure casting die according to claim 1 is characterized in that: described a plurality of cast gates (4) are arranged on bed die (1) the lower whorl lip outside or bed die window place.
3. aluminum-alloy wheel low pressure casting die according to claim 1 is characterized in that: be provided with cooling-water duct (8) in the described mould.
4. aluminum-alloy wheel low pressure casting die according to claim 1 is characterized in that: center riser (6) top in backform (1) is provided with the pressurization blast pipe (9) that communicates with center riser (6).
5. aluminum-alloy wheel low pressure casting die according to claim 1, it is characterized in that: described bed die below is fixed with aluminium liquid flow dividing structure, described aluminium liquid flow dividing structure comprises top cover (11) and pedestal (12), described top cover (11) is fixed on the pedestal (12), be provided with cavity (13) in the described pedestal (12), described cavity (13) is communicated with a plurality of cast gates (4) in bed die (2) the lower whorl lip outside, and the bottom of pedestal (12) is provided with stalk interface (14).
6. aluminium alloy wheel hub low pressure casting die according to claim 5 is characterized in that: described cavity (13) is a conical cavity.
7. aluminum-alloy wheel low pressure casting die according to claim 1 is characterized in that: be provided with water-cooling ring (15) between described bed die (2) and the limit mould (3), described water-cooling ring (15) is meant the structure of the water circulation channel that has ring-type.
8. aluminium alloy wheel hub low pressure casting die according to claim 1 is characterized in that: described pressurization blast pipe (9) is provided with breathable material layer (10) with the junction of center riser (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206654711U CN201922023U (en) | 2010-12-08 | 2010-12-08 | Low-pressure casting mold for aluminum alloy wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206654711U CN201922023U (en) | 2010-12-08 | 2010-12-08 | Low-pressure casting mold for aluminum alloy wheel |
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| Publication Number | Publication Date |
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| CN201922023U true CN201922023U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206654711U Expired - Fee Related CN201922023U (en) | 2010-12-08 | 2010-12-08 | Low-pressure casting mold for aluminum alloy wheel |
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| CN (1) | CN201922023U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029377A (en) * | 2010-12-08 | 2011-04-27 | 何丙军 | Low-pressure casting die of aluminium alloy wheel and casting method thereof |
| CN102615268A (en) * | 2012-04-17 | 2012-08-01 | 江苏大学 | Antigravity squeeze casting device of aluminum alloy connecting rod and manufacture method |
| CN103801675A (en) * | 2014-02-25 | 2014-05-21 | 昆山众异特机械工业有限公司 | Low-pressure casting die for automobile aluminum wheel hub |
| CN104325109A (en) * | 2014-10-10 | 2015-02-04 | 镁联科技（芜湖）有限公司 | Die-cast formation die and die-cast formation method |
| CN104353807A (en) * | 2014-12-05 | 2015-02-18 | 重庆戴卡捷力轮毂制造有限公司 | Top die for water-cooled die casting mold for manufacturing aluminum alloy wheel hub |
| CN108543915A (en) * | 2018-06-07 | 2018-09-18 | 贵州华煜丰车轮制造有限公司 | A kind of wheel hub casting mould and its casting method |
| US10654097B2 (en) | 2016-06-08 | 2020-05-19 | Nissan Motor Co., Ltd. | Low-pressure casting mold |
| CN111940702A (en) * | 2020-08-31 | 2020-11-17 | 中信戴卡股份有限公司 | Casting mold, counter-pressure casting method and low-pressure casting method |
-
2010
- 2010-12-08 CN CN2010206654711U patent/CN201922023U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029377A (en) * | 2010-12-08 | 2011-04-27 | 何丙军 | Low-pressure casting die of aluminium alloy wheel and casting method thereof |
| CN102029377B (en) * | 2010-12-08 | 2013-10-30 | 何丙军 | Low-pressure casting die of aluminium alloy wheel and casting method thereof |
| CN102615268A (en) * | 2012-04-17 | 2012-08-01 | 江苏大学 | Antigravity squeeze casting device of aluminum alloy connecting rod and manufacture method |
| CN102615268B (en) * | 2012-04-17 | 2014-05-28 | 江苏大学 | Antigravity squeeze casting device of aluminum alloy connecting rod and manufacture method |
| CN103801675A (en) * | 2014-02-25 | 2014-05-21 | 昆山众异特机械工业有限公司 | Low-pressure casting die for automobile aluminum wheel hub |
| CN104325109A (en) * | 2014-10-10 | 2015-02-04 | 镁联科技（芜湖）有限公司 | Die-cast formation die and die-cast formation method |
| CN104325109B (en) * | 2014-10-10 | 2018-02-09 | 深圳市建升科技股份有限公司 | Die-casting forming die and method of squeeze forming |
| CN104353807A (en) * | 2014-12-05 | 2015-02-18 | 重庆戴卡捷力轮毂制造有限公司 | Top die for water-cooled die casting mold for manufacturing aluminum alloy wheel hub |
| US10654097B2 (en) | 2016-06-08 | 2020-05-19 | Nissan Motor Co., Ltd. | Low-pressure casting mold |
| CN108543915A (en) * | 2018-06-07 | 2018-09-18 | 贵州华煜丰车轮制造有限公司 | A kind of wheel hub casting mould and its casting method |
| CN108543915B (en) * | 2018-06-07 | 2024-02-13 | 田平康 | Hub casting mold and casting method thereof |
| CN111940702A (en) * | 2020-08-31 | 2020-11-17 | 中信戴卡股份有限公司 | Casting mold, counter-pressure casting method and low-pressure casting method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20141208 |
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| EXPY | Termination of patent right or utility model |