CN103769535B - The manufacture method of core mold, core and core - Google Patents
The manufacture method of core mold, core and core Download PDFInfo
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- CN103769535B CN103769535B CN201410028458.8A CN201410028458A CN103769535B CN 103769535 B CN103769535 B CN 103769535B CN 201410028458 A CN201410028458 A CN 201410028458A CN 103769535 B CN103769535 B CN 103769535B
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Abstract
The invention provides a kind of core mold, the manufacture method of core and core, core mold comprises: fixed half and moving half, and dynamic model and cover half close up rear formation die cavity; Die cavity comprises: multiplely take turns raia, centring ring chamber, multiple compensated cavity, boss chamber and water oral cavity, multiple one end of taking turns raia is all connected with centring ring chamber, the other end by boss chamber with water oral cavity and be connected, and multiple raia of taking turns is distributed on centring ring chamber and waters between oral cavity, compensated cavity between adjacent wheels raia, and respectively with centring ring chamber with water oral cavity and be connected.The compensated cavity arranged in core mold provided by the invention adds the quantity of watering passage between oral cavity and centring ring chamber, precoated sand is enable to be full of die cavity in the short period of time, meanwhile, make the precoated sand in centring ring chamber fill type more abundant, thus improve the qualification rate of product; When the core demoulding, compensated cavity forms auxiliary spoke, adds the intensity of core entirety, thus reduces the probability that fracture occurs core in knockout course.
Description
Technical field
The present invention relates to mould applications, in particular to a kind of core mold, the method using this Making mold core and core.
Background technology
Along with modern automotive save energy and reduce the cost and require constantly surging, safety and environmental regulation are increasingly strict, and the light-weighted requirement of motor vehicle is more urgent.As making the light-weighted product of motor vehicle, the lightweight of aluminum-alloy wheel, high strength have become the core of wheel industry competition along with the deep development of motor vehicle industry, light-weighted ultimate technology is all constantly being found by each wheel hub manufacturer, make new product can in market competition position oneself at the forefront.
At present, many wheel hub manufacturers add core in casting hub process, the wheel hub cast out is made to have hollow structure, but because the diameter of automotive hub is larger, in the process manufacturing core, easily occur that precoated sand fills the insufficient problem of type, and spoke is not only thin but also long, easily ruptures in knockout course.
Therefore, developing a core mold simultaneously evading to sum up defect, is technical problem urgently to be resolved hurrily.
Summary of the invention
In order to solve the problems of the technologies described above one of at least, one object of the present invention is to provide a kind of core mold, this core mold reasonable in design, effectively solves precoated sand and fills the insufficient problem of type, and solve core easily occur in knockout course rupture problem.
Another object of the present invention is to provide a kind of method adopting above-mentioned core mold to manufacture core.
Another object of the present invention is to provide a kind of core adopting the manufacture method of above-mentioned core to make.
In view of this, first aspect embodiment of the present invention provides a kind of core mold, comprising: cover half, described cover half is provided with bottoming hole, and dynamic model, described dynamic model and described cover half close up rear formation die cavity, wherein, described die cavity comprises: multiplely take turns raia, centring ring chamber, multiple compensated cavity, boss chamber and water oral cavity, multiple described one end of taking turns raia is all connected with described centring ring chamber, the described other end of taking turns raia is provided with the first branch chamber and the second branch chamber, adjacent described described first branch chamber of taking turns raia is connected with described second branch chamber, and the first branch chamber and described second branch's chamber connectivity part are provided with described boss chamber, described boss chamber is communicated with described oral cavity of watering, multiple described raia of taking turns is distributed on described centring ring chamber and describedly waters between oral cavity, described compensated cavity is describedly taken turns between raia adjacent, and be connected with described oral cavity of watering with described centring ring chamber respectively.
Core mold provided by the invention has multiple compensated cavity, the arranging to increase of compensated cavity waters the quantity of passage between oral cavity and centring ring chamber, precoated sand is enable to be full of die cavity in the short period of time, thus improve production efficiency, simultaneously, make the precoated sand in centring ring chamber fill type more abundant, thus improve the qualification rate of product; When the core demoulding, compensated cavity forms multiple auxiliary spoke, adds the intensity of core entirety, thus reduces the probability that fracture occurs core in knockout course.
In addition, the described core mold in the above embodiment of the present invention can also have following additional technical feature:
According to an embodiment provided by the invention, described die cavity also comprises multiple positioning boss chamber, and multiple described positioning boss chamber is uniform along the outline circumference in described centring ring chamber.
According to an embodiment provided by the invention, described cover half comprises cover half body and cover half pressing plate, described cover half pressing plate is provided with the first half bore, described cover half body is provided with second half bore corresponding with described first half bore, and described first half bore and described second half bore form described bottoming hole.
According to an embodiment provided by the invention, described cover half is arranged the first push rod demolding structure, described first push rod demolding structure is used for the core cast to be separated with described cover half.
According to an embodiment provided by the invention, described dynamic model is arranged the second push rod demolding structure, described second push rod demolding structure is used for the core cast to be separated with described dynamic model.
According to an embodiment provided by the invention, described cover half is provided with steam vent, and is provided with screen pack between described steam vent and described die cavity.
According to an embodiment provided by the invention, described dynamic model is provided with spreader, and described spreader be positioned at described in water oral cavity.
A second aspect of the present invention embodiment provides a kind of manufacture method of core, and adopt the core mold according to any one of above-described embodiment to manufacture described core, this manufacture method comprises:
Step 101, closes up the described core mold forming and have die cavity by cover half and dynamic model;
Step 102, starts heater, heats described core mold;
Step 103, injects precoated sand, until be full of precoated sand in described die cavity in the described die cavity of the described core mold heated;
Step 104, the precoated sand in described die cavity solidify to form core base in a heated condition;
Step 105, described core base solidify good after, open core mold, starting the first mould emptier by described dynamic model is separated with described cover half with core base, and then starts the second mould emptier by core base and be separated with described dynamic model;
Step 106, is undertaken being cooled to room temperature by core base;
Step 107, excises auxiliary spoke shaping by multiple compensated cavity on core base and waters oral cavity, making described core.
A third aspect of the present invention embodiment provides a kind of core, and adopt the manufacture method manufacture of the core described in above-described embodiment to form, described core comprises: centring ring; Multiple spoke, one end of spoke described in each is all fixedly connected with described centring ring, the other end place of spoke described in each is provided with breach, the other end of described spoke is divided into the first branch and the second branch by described breach, described first branch and described second branch of adjacent described spoke are interconnected, and the junction of described first branch and described second branch is provided with boss.
According to an embodiment provided by the invention, described core also comprises multiple positioning boss, and multiple described positioning boss is uniform along the circumference of the outline of described centring ring.
Additional aspect of the present invention and advantage become obvious by description part below, or are recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the sectional structure schematic diagram of core mold one embodiment of the present invention;
Fig. 2 is the structural representation of dynamic model in Fig. 1;
Fig. 3 is the structural representation of cover half in Fig. 1;
Fig. 4 is the schematic flow sheet of core manufacture method one embodiment of the present invention;
Fig. 5 be core one embodiment of the present invention perspective view;
Fig. 6 is the main TV structure schematic diagram of core shown in Fig. 5.
Wherein, the corresponding relation in Fig. 1 to Fig. 6 between Reference numeral and component names is:
1 cover half, 101 cover half bodies, 102 cover half pressing plates, 103 bottoming holes, 2 dynamic models, 3 take turns raia, 301 first branch chambeies, 302 second branch chambeies, 4 centring ring chambeies, 5 compensated cavities, 6 water oral cavity, 7 boss chambeies, 8 positioning boss chambeies, 9 first demoulding push rods, 10 first release links, 11 second demoulding push rods, 12 second release links, 13 steam vents, 14 spreaders, 15 cores, 1501 centring rings, 1502 spokes, 1,503 first branches, 1504 second branches, 1505 boss, 1506 positioning boss, 1507 breach.
Detailed description of the invention
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Referring to Fig. 1 to Fig. 3, core mold described is according to some embodiments of the invention described.
As shown in Figure 1 to Figure 3, core mold comprises: cover half 1 and dynamic model 2; Cover half 1 is provided with bottoming hole 103, dynamic model 2 and cover half 1 close up rear formation die cavity.
In one particular embodiment of the present invention, die cavity comprises: multiplely take turns raia 3, centring ring chamber 4, multiple compensated cavity 5, boss chamber 7 and water oral cavity 6, multiple one end of taking turns raia 3 is all connected with centring ring chamber 4, the other end of wheel raia 3 is provided with the first branch chamber 301 and the second branch chamber 302, first branch chamber 301 of adjacent wheels raia 3 is connected with the second branch chamber 302, and the first branch chamber 301 and the second branch chamber 302 connectivity part are provided with boss chamber 7, boss chamber 7 with water oral cavity 6 and be communicated with, multiple raia 3 of taking turns is distributed on centring ring chamber 4 and waters between oral cavity 6, compensated cavity 5 is between adjacent wheels raia 3, and respectively with centring ring chamber 4 with water oral cavity 6 and be connected.
Core mold provided by the invention has multiple compensated cavity 5, the setting of compensated cavity 5 adds the quantity of watering passage between oral cavity 6 and centring ring chamber 4, precoated sand is enable to be full of die cavity in the short period of time, thus improve production efficiency, simultaneously, make the precoated sand in centring ring chamber 4 fill type more abundant, thus improve the qualification rate of product; When core 15 demoulding, compensated cavity 5 forms multiple auxiliary spoke, adds the intensity of core 15 entirety, thus reduces the probability that fracture occurs core 15 in knockout course.
In one embodiment of the invention, as shown in Figure 3, die cavity also comprises multiple positioning boss chamber 8, and multiple positioning boss chamber 8 is uniform along the outline circumference in centring ring chamber 4.The setting in positioning boss chamber 8 can make the core 15 that casting is good have positioning boss 1506, when casting hub, core 15 is fixed by positioning boss 1506 and casting hub mold, avoid core 15 skew occurs in casting process to cause the situation of wheel hub casting flaw to occur, thus improve the qualification rate of product.
In one embodiment of the invention, as shown in Figure 1, cover half 1 comprises cover half body 101 and cover half pressing plate 102, cover half pressing plate 102 is provided with the first half bore, cover half body 101 is provided with second half bore corresponding with the first half bore, the first half bore and the second half bore form bottoming hole 103.Bottoming hole 103 is made up of two half bore, and such setting reduces the difficulty of processing of bottoming hole 103, thus improves operating efficiency.
In one embodiment of the invention, as shown in Figure 1, cover half 1 is arranged the first push rod demolding structure, the first push rod demolding structure is used for the core 15 cast to be separated with cover half 1; Particularly, the first push rod demolding structure comprises the first demoulding push rod 9 and the core 15 cast can be separated with cover half 1 by the first release link 10, first demoulding push rod 9, and the first release link 10 can make cover half 1 reset.
In one embodiment of the invention, as shown in Figure 1, dynamic model 2 is arranged the second push rod demolding structure, the second push rod demolding structure is used for the core 15 cast to be separated with dynamic model 2; Particularly, the second push rod demolding structure comprises the second demoulding push rod 11 and the core 15 cast can be separated with dynamic model 2 by the second release link 12, second demoulding push rod 11, and the second release link 12 can make dynamic model 2 reset.
Adopt above-described embodiment, make die sinking more laborsaving, automaticity is high, and performance accuracy is high, reduces labor strength, ensures the construction safety of workman.
In one embodiment of the invention, as shown in Figure 1, cover half 1 is provided with steam vent 13, and is provided with screen pack between steam vent 13 and die cavity.When being filled with precoated sand in mould, the setting of steam vent 13 can make the gas in die cavity discharge mould fast, thus makes precoated sand be full of die cavity in the short period of time.
In one embodiment of the invention, as shown in Figure 1, dynamic model 2 is arranged spreader 14, and spreader 14 is positioned at and waters oral cavity 6.Spreader 14 can shunt precoated sand, thus enables precoated sand flow to each cavity uniformly.
The manufacture method of the core according to one embodiment of the invention is described referring to Fig. 4.
As shown in Figure 4, the manufacture method of the core that embodiments of the invention provide, adopt the core mold according to any one of above-described embodiment to manufacture described core 15, this manufacture method comprises:
Step 101, holds together to form the core mold with die cavity with dynamic model is 2-in-1 by cover half 1;
Step 102, starts heater, heats core mold;
Step 103, injects precoated sand, until be full of precoated sand in die cavity in the die cavity of the core mold heated;
Step 104, the precoated sand in die cavity solidify to form core base in a heated condition;
Step 105, core base solidify good after, open core mold, starting the first mould emptier by dynamic model 2 is separated with cover half 1 with core base, and then starts the second mould emptier by core base and be separated with dynamic model 2;
Step 106, is undertaken being cooled to room temperature by core base;
Step 107, excises auxiliary spoke shaping by multiple compensated cavity 5 on core base and waters oral cavity 6, making core 15.
Referring to describing core 15 described according to some embodiments of the invention shown in Fig. 5 and Fig. 6.
As shown in Figure 5 and Figure 6, the core 15 that the embodiment of the present invention provides, the manufacture method manufacture of the core of above-described embodiment is adopted to form, core 15 comprises: centring ring 1501 and multiple spoke 1502, one end of each spoke 1502 is all fixedly connected with centring ring 1501, the other end place of each spoke 1502 is provided with breach 1507, the other end of spoke 1502 is divided into the first branch 1503 and the second branch 1504 by breach 1507, first branch 1503 of adjacent spokes 1502 and the second branch 1504 are interconnected, and the junction of the first branch 1503 and the second branch 1504 is provided with boss 1505.
According to an embodiment provided by the invention, core 15 also comprises multiple positioning boss 1506, and multiple positioning boss 1506 is uniform along the circumference of the outline of centring ring 1501.
The casting process of hollow wheel hub is described according to core 15 provided by the invention below:
Casting hub mold (not shown) comprises patrix, limit mould and counterdie, the positioning boss 1506 of core 15 is coordinated with the confined planes of the counterdie of casting hub mold, outside the location that the lower surface of the centring ring 1501 of core 15 is arranged on casting hub mold counterdie in land, the upper surface of the centring ring 1501 of core 15 closes up with the limit mould of casting hub mold and coordinates, centring ring 1501, spoke 1502 and boss 1505 are maked somebody a mere figurehead in the cavity that formed at the upper die and lower die of casting hub mold, after casting hub mold matched moulds also casting, part within centring ring 1501 internal face of core 15 is all wrapped in hub cast, centring ring 1501 is looped around on hub cast outer wall, the sand export of the spoke 1502 at hub cast and wheel rim junction is exposed after removing centring ring 1501 after foundry goods cooling and demolding, the core 15 of hub cast inside is removed through operations such as quenchings, obtain the wheel hub of hollow, wherein, first branch 1503, the cavity of the second branch 1504 and the corresponding mounting disc of boss 1505, the cavity of the corresponding wheel hub spoke of spoke 1502 of core 15, the reinforcement of breach 1507 corresponding wheel hub spoke 1502 cavity between the first branch 1503 of core 15 and the second branch 1504, to strengthen the mechanical strength of wheel hub wheel spoke, the sand export of the corresponding core 15 in joint portion of centring ring 1501 and spoke 1502.
In the present invention, term " first ", " second " object only for describing, and instruction or hint relative importance can not be interpreted as; Term " multiple " then refers to two or more, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this description, specific features, structure, material or feature that the description of term " embodiment ", " some embodiments ", " specific embodiment " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a core mold, for the manufacture of the core can casting hollow wheel hub, is characterized in that, comprising:
Cover half, described cover half is provided with bottoming hole; With
Dynamic model, described dynamic model and described cover half close up rear formation die cavity;
Wherein, described die cavity comprises: multiplely take turns raia, centring ring chamber, multiple compensated cavity, boss chamber and water oral cavity, multiple described one end of taking turns raia is all connected with described centring ring chamber, the described other end of taking turns raia is provided with the first branch chamber and the second branch chamber, adjacent described described first branch chamber of taking turns raia is connected with described second branch chamber, and the first branch chamber and described second branch's chamber connectivity part are provided with described boss chamber, described boss chamber is communicated with described oral cavity of watering, multiple described raia of taking turns is distributed on described centring ring chamber and describedly waters between oral cavity, described compensated cavity is describedly taken turns between raia adjacent, and be connected with described oral cavity of watering with described centring ring chamber respectively.
2. core mold according to claim 1, is characterized in that, described die cavity also comprises multiple positioning boss chamber, and multiple described positioning boss chamber is uniform along the outline circumference in described centring ring chamber.
3. core mold according to claim 2, it is characterized in that, described cover half comprises cover half body and cover half pressing plate, described cover half pressing plate is provided with the first half bore, described cover half body is provided with second half bore corresponding with described first half bore, and described first half bore and described second half bore form described bottoming hole.
4. core mold according to claim 3, is characterized in that, described cover half is arranged the first push rod demolding structure, and described first push rod demolding structure is used for the core cast to be separated with described cover half.
5. core mold according to claim 4, is characterized in that, described dynamic model is arranged the second push rod demolding structure, and described second push rod demolding structure is used for the core cast to be separated with described dynamic model.
6. core mold according to any one of claim 1 to 5, is characterized in that, described cover half is provided with steam vent, and is provided with screen pack between described steam vent and described die cavity.
7. core mold according to claim 6, is characterized in that, described dynamic model is provided with spreader, and described spreader be positioned at described in water oral cavity.
8. a manufacture method for core, described core is used for cast hollow wheel hub, it is characterized in that, adopt the core mold according to any one of claim 1 to 7 to core as described in manufacturing, this manufacture method comprises:
Step 101, closes up the described core mold forming and have die cavity by cover half and dynamic model;
Step 102, starts heater, heats described core mold;
Step 103, injects precoated sand, until be full of precoated sand in described die cavity in the described die cavity of the described core mold heated;
Step 104, the precoated sand in described die cavity solidify to form core base in a heated condition;
Step 105, described core base solidify good after, open core mold, starting the first mould emptier by described dynamic model is separated with described cover half with core base, and then starts the second mould emptier by core base and be separated with described dynamic model;
Step 106, is undertaken being cooled to room temperature by core base;
Step 107, excises auxiliary spoke shaping by multiple compensated cavity on core base and waters oral cavity, making described core.
9. a core, for cast hollow wheel hub, is characterized in that, adopt the manufacture method manufacture of core as claimed in claim 8 to form, described core comprises:
Centring ring;
Multiple spoke, one end of spoke described in each is all fixedly connected with described centring ring, the other end place of spoke described in each is provided with breach, the other end of described spoke is divided into the first branch and the second branch by described breach, described first branch and described second branch of adjacent described spoke are interconnected, and the junction of described first branch and described second branch is provided with boss.
10. core according to claim 9, is characterized in that, also comprises multiple positioning boss, and multiple described positioning boss is uniform along the circumference of the outline of described centring ring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410028458.8A CN103769535B (en) | 2014-01-21 | 2014-01-21 | The manufacture method of core mold, core and core |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410028458.8A CN103769535B (en) | 2014-01-21 | 2014-01-21 | The manufacture method of core mold, core and core |
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| CN103769535A CN103769535A (en) | 2014-05-07 |
| CN103769535B true CN103769535B (en) | 2015-11-04 |
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| CN201410028458.8A Active CN103769535B (en) | 2014-01-21 | 2014-01-21 | The manufacture method of core mold, core and core |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015106126A1 (en) * | 2015-04-21 | 2016-10-27 | Nemak, S.A.B. De C.V. | Core box for the production of casting cores |
| CN108907084B (en) * | 2018-09-07 | 2024-01-26 | 无锡蠡湖增压技术股份有限公司 | Sand core mould with material returning function |
| CN110280714A (en) * | 2019-08-05 | 2019-09-27 | 莱州新安达汽车零部件有限公司 | A kind of the film covered sand core mold and operating method of the more detour Aluminum Alloy Tubes of abnormal shape |
| CN110773702A (en) * | 2019-11-04 | 2020-02-11 | 金华浩翔汽配有限公司 | Casting die for brake disc blank precoated sand core box and grinding wheel manufacturing process |
| CN111390108A (en) * | 2020-04-22 | 2020-07-10 | 芜湖市金贸流体科技股份有限公司 | Flange rapid forming efficient flange mold structure and casting method |
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| US3302919A (en) * | 1965-11-12 | 1967-02-07 | Abex Corp | Apparatus for casting metal wheels |
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| CN202934079U (en) * | 2012-11-05 | 2013-05-15 | 信阳同合车轮有限公司 | Sand core box for casting of train wheels |
| CN203751237U (en) * | 2014-01-21 | 2014-08-06 | 浙江今飞凯达轮毂股份有限公司 | Sand core mold and sand core |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06170492A (en) * | 1992-12-07 | 1994-06-21 | Mazda Motor Corp | Method for molding sand core |
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| US3302919A (en) * | 1965-11-12 | 1967-02-07 | Abex Corp | Apparatus for casting metal wheels |
| CN101380665A (en) * | 2007-09-03 | 2009-03-11 | 中国国际海运集装箱(集团)股份有限公司 | Wheel hub casting method and die thereof |
| CN202934079U (en) * | 2012-11-05 | 2013-05-15 | 信阳同合车轮有限公司 | Sand core box for casting of train wheels |
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Application publication date: 20140507 Assignee: ZHEJIANG JINTAI AUTO PARTS MANUFACTURING CO.,LTD. Assignor: ZHEJIANG JINFEI KAIDA WHEEL Co.,Ltd. Contract record no.: X2022330000132 Denomination of invention: Sand core mould, manufacturing method of sand core and sand core Granted publication date: 20151104 License type: Common License Record date: 20220530 |
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