CN105234369B - Die core of pressure casting die and pressure casting die - Google Patents

Die core of pressure casting die and pressure casting die Download PDF

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Publication number
CN105234369B
CN105234369B CN201510707975.2A CN201510707975A CN105234369B CN 105234369 B CN105234369 B CN 105234369B CN 201510707975 A CN201510707975 A CN 201510707975A CN 105234369 B CN105234369 B CN 105234369B
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CN
China
Prior art keywords
die
cavity
wire
cast gate
heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201510707975.2A
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Chinese (zh)
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CN105234369A (en
Inventor
孙侥鲜
王长明
谢守德
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Janus Intelligent Group Corp Ltd
Original Assignee
Dongguan Huacheng Metal Technology Co Ltd
Janus Dongguan Precision Components Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Dongguan Huacheng Metal Technology Co Ltd, Janus Dongguan Precision Components Co Ltd filed Critical Dongguan Huacheng Metal Technology Co Ltd
Priority to CN201510707975.2A priority Critical patent/CN105234369B/en
Publication of CN105234369A publication Critical patent/CN105234369A/en
Application granted granted Critical
Publication of CN105234369B publication Critical patent/CN105234369B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a die core of a pressure casting die and the pressure casting die. The die core comprises a front die core body, a rear die core body matched with the front die core body, and a product cavity formed between the bottom of the front die core body and the top of the rear die core body after die assembly. The top of the rear die core body is further provided with a pouring inlet and a pouring outlet. The top face of the front die core body is provided with a heating part. The whole product cavity can be covered with the heating part due to the area of the heating part so that the temperature difference between the pouring inlet and the pouring outlet can be reduced. The pressure casting die comprises the die core. An aluminum alloy product formed through the pressure casting die can have high quality and be directly subjected to anodic oxidation treatment.

Description

A kind of die and die casting of die casting
Technical field
The present invention relates to the die-casting technique of metal, the die and die casting of more particularly to a kind of die casting.
Background technology
Aluminium alloy compression casting be molded due to the chemical composition of material itself, impurity and its content, the institutional framework of alloy with into Type conditional decision product has the bad orders such as pore, shrinkage cavity, flow liner, watermark, and this causes aluminium alloy compression casting shaped article not Anodized can be directly done, if having done anodized, the product of high-quality, existing processing mode cannot be also obtained Usually aluminium alloy compression casting shaped article is done after outward appearance is processed using spraying and does anodized again, but can so increase place Science and engineering sequence, wastes time and energy, or into after the shape wanted again is done Product processing at anode by the technique of full CNC machinings Reason, but CNC processing charges is expensive, and cost is very high.
The content of the invention
In order to make up above-mentioned the deficiencies in the prior art, the present invention proposes a kind of die and die casting of die casting, especially It is the die and die casting of the die casting for aluminium alloy.
The technical problem of the present invention is solved by following technical scheme:
A kind of die of die casting, including front cavity and the front mould after rear cavity, matched moulds that the front cavity is matched The product die cavity formed between the top of the bottom of benevolence and the rear cavity, is additionally provided with into cast gate in the rear on the top of die With go out cast gate, be provided with heating part on the top surface of the front cavity, the area of the heating part be enough to cover the whole product Die cavity, with reduce it is described enter cast gate and the temperature difference that goes out between cast gate.
Preferably, the heating part is that, by the coil formed after wire coiling, the wire is connected to the front cavity On top surface, the two ends of the coil are used to be connected with external power source respectively as positive pole, negative pole.
Preferably, the position of corresponding lead is additionally provided with wire casing on the top surface of the front cavity, and the wire is placed in described It is connected with the top surface of the front cavity in wire casing.
Preferably, the die also includes front mould backing plate, and the front mould backing plate is connected to cover with the top surface of the front cavity The heating part is covered, the positive pole and negative pole are connected through the front mould backing plate with the external power source.
Preferably, after the coil electricity formed magnetic field active area more than the product type cavity area 1/6~ 1/3。
Preferably, the two ends of the coil connect respectively a contact post, and the positive pole and negative pole are touched respectively by described Headpin is connected with external power source.
Preferably, the coil is formed by the uniform coiling of the wire and positioned at the surface of the product die cavity, institute The wire for stating the outmost turns of coil surrounds the product die cavity.
Preferably, the material of the wire is copper.
Preferably, the heat that the heating part provides enters cast gate and the temperature difference≤50 gone out between cast gate described in being sufficient so that ℃。
A kind of die casting, including described die.
The beneficial effect that the present invention is compared with the prior art includes:The present invention on the top surface of front cavity arrange heating part with For reducing into cast gate and the temperature difference gone out between cast gate, because the temperature difference is little, cast gate can be avoided out because material flow speed is slow The product trace for causing;The heat energy that simultaneously heating part produces can reduce the wetability of raw material and die contact surface, suppress to fill Heterogeneous forming core during type, reduces viscosity, and then improves mobility, improves mold-filling capacity so that combine more when raw material solidifies Closely, the compactness and mechanical property of product are improved, it is to avoid pore, shrinkage cavity, flow liner, watermark that raw material is produced in flowing etc. lacks Fall into, there can be higher quality using the Al-alloy products of the die casting shaping of the present invention, can directly carry out anodic oxidation Process.
Description of the drawings
Fig. 1 is the structural representation of the die of the die casting in the preferred embodiment of the present invention;
Fig. 2 is that the front cavity in the die of the die casting in the preferred embodiment of the present invention removes the structural representation after coil Figure;
Fig. 3 is the structural representation of the rear cavity in the die of the die casting in the preferred embodiment of the present invention;
Fig. 4 is the structural representation of the die of the die casting in another preferred embodiment of the invention;
Fig. 5 is the cross-sectional schematic of Fig. 4.
Specific embodiment
Below against accompanying drawing and with reference to preferred embodiment the invention will be further described.
The present invention provides a kind of die of die casting, and in a specific embodiment, the die includes front cavity and described The product type formed between the bottom of the front cavity and the top of the rear cavity after rear cavity, the matched moulds of front cavity matching Chamber, in the rear the top of die be provided with into cast gate and cast gate is gone out, heating part is provided with the top surface of the front cavity, it is described The area of heating part be enough to cover the whole product die cavity, with reduce it is described enter cast gate and the temperature difference that goes out between cast gate.
In a preferred embodiment, as shown in Figure 1,2 and 3, die includes the rear cavity that front cavity 1 is matched with front cavity 1 2nd, the product die cavity 3 (as shown in Figure 5) formed between the top of the bottom of front cavity 1 and rear cavity 2 after matched moulds, in rear cavity 2 Top be provided with into cast gate 21 and cast gate 22 is gone out, be provided with heating part on the top surface of front cavity 1, the heating part is by wire 4 The coil formed after coiling, the position of corresponding lead 4 is additionally provided with wire casing 5 on the top surface of front cavity 1, wire 4 be placed in wire casing 5 with (wire casing 5 is preferable, if without wire casing 5, directly wire 4 can be connected to into front cavity 1 for the top surface connection of front cavity 1 Top surface on), all wires 4 are located in approximately the same plane, and the two ends of coil are used for and external power source respectively as positive pole, negative pole Connection.Coil is to form a loop by the uniform coiling of wire 4 and be located at the surface of product die cavity, the outmost turns of coil Wire encirclement product die cavity (that is, area of the area of coil more than product die cavity, in this example, near the outmost turns for entering cast gate Wire and the spacing near the side of the product die cavity for entering cast gate be 20mm, the same wire near the outmost turns for going out cast gate with lean on The spacing for closely going out the side of the product die cavity of cast gate is 20mm), the area of such heating part be enough to cover whole product die cavity, to subtract It is little enter cast gate 21 and the temperature difference that goes out between cast gate 22, in this example, the material of wire is copper, and the heat that heating part provides is sufficient so that Enter cast gate and the temperature difference≤50 DEG C gone out between cast gate.
In this example, the two ends of coil connect respectively a contact post 6, positive pole and negative pole respectively by contact post 6 with it is outer Portion's power supply connection, in other embodiments, it is also possible to without contact post, draws after wire is bent.
Preferably, in another preferred embodiment, as shown in Figures 4 and 5, die also includes front mould backing plate 7, front mould backing plate 7 It is connected with the top surface of front cavity 1 to cover whole coil, so as to protect coil, positive pole and negative pole are through front mould backing plate 7 and outside Power supply connects.
The present invention also provides a kind of die casting, and it includes the die in above preferred embodiment, certainly the die casting Also include the conventional miscellaneous part in this area, such as mould bases, cooling system, locating dowel, screw.Need before aluminium alloy compression casting shaping First coil to be connected to form a magnetic field, the active area in magnetic field is preferably greater than the 1/6~1/3 of product type cavity area, by magnetic Field energy is converted to heat energy, die is heated to can carry out to pour after the temperature of die casting raw material and keeps constant temperature as far as possible (if because pressure The temperature of casting mould is too low, then cast-internal short texture, and air is discharged difficult, it is difficult to be molded;If mold temperature is too high, cast Part internal structure is excessively fine and close, and in causing foundry goods easy " weldering " to invest die cavity, sticking to mould is difficult to draw off foundry goods.Simultaneously too high temperature meeting Die itself is expanded, casting dimension accuracy is affected.Therefore, by enter cast gate and go out cast gate the temperature difference control within 50 DEG C compared with It is good), because Distribution of Magnetic Field is uniform, actual induction active area is big, homogeneous heating, and the efficiency of heating surface is high, when aluminium alloy compression casting shaping Raw material pour into after the product die cavity of die, it is temperature difference very little in a balanced way to enter cast gate, go out cast gate, the temperature of product cavity portion, Die-cast product is set to have compared with quality product matter;The heat energy changed using coil can improve the interfacial tension of raw material, vary without raw material into Point, do not pollute to filling section bar material, it is also possible to simplify Design of Dies, without specially changing position and depth into cast gate, can With flexible design;The Al-alloy products being molded by the die casting do not have the bad orders such as pore, shrinkage cavity, flow liner, watermark, energy Anodized is directly done, therefore, the invention provides improving the effective way of aluminium alloy castings surface anodization quality.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert The present invention be embodied as be confined to these explanations.For those skilled in the art, do not taking off On the premise of present inventive concept, some equivalent substitutes or obvious modification can also be made, and performance or purposes are identical, all should When being considered as belonging to protection scope of the present invention.

Claims (10)

1. a kind of die of die casting, including front cavity and the front cavity after rear cavity, matched moulds that the front cavity is matched Bottom and the top of the rear cavity between the product die cavity that formed, be additionally provided with the top of die in the rear into cast gate and Go out cast gate, it is characterised in that:Heating part is provided with the top surface of the front cavity, the area of the heating part be enough to cover whole The product die cavity, with reduce it is described enter cast gate and the temperature difference that goes out between cast gate.
2. the die of die casting as claimed in claim 1, it is characterised in that:The heating part is by being formed after wire coiling Coil, the wire is connected on the top surface of the front cavity, the two ends of the coil respectively as positive pole, negative pole be used for External power source connects.
3. the die of die casting as claimed in claim 2, it is characterised in that:The corresponding lead on the top surface of the front cavity Position be additionally provided with wire casing, the wire is placed in the wire casing and is connected with the top surface of the front cavity.
4. the die of die casting as claimed in claim 2, it is characterised in that:The die also includes front mould backing plate, described Front mould backing plate is connected to cover the heating part with the top surface of the front cavity, and the positive pole and negative pole pass through the front mould backing plate It is connected with the external power source.
5. the die of die casting as claimed in claim 2, it is characterised in that:The work in the magnetic field formed after the coil electricity With area more than the 1/6~1/3 of the product type cavity area.
6. the die of the die casting as described in any one of claim 2-5, it is characterised in that:The two ends of the coil connect respectively A contact post is connect, the positive pole and negative pole are connected respectively by the contact post with external power source.
7. the die of die casting as claimed in claim 2, it is characterised in that:The coil is by the uniform coiling of the wire Formed and positioned at the surface of the product die cavity, the wire of the outmost turns of the coil surrounds the product die cavity.
8. the die of die casting as claimed in claim 2, it is characterised in that:The material of the wire is copper.
9. the die of die casting as claimed in claim 1, it is characterised in that:The heat that the heating part provides is sufficient so that It is described enter cast gate and the temperature difference≤50 DEG C that go out between cast gate.
10. a kind of die casting, it is characterised in that:Including the die described in claim 1-9 any one.
CN201510707975.2A 2015-10-26 2015-10-26 Die core of pressure casting die and pressure casting die Expired - Fee Related CN105234369B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510707975.2A CN105234369B (en) 2015-10-26 2015-10-26 Die core of pressure casting die and pressure casting die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510707975.2A CN105234369B (en) 2015-10-26 2015-10-26 Die core of pressure casting die and pressure casting die

Publications (2)

Publication Number Publication Date
CN105234369A CN105234369A (en) 2016-01-13
CN105234369B true CN105234369B (en) 2017-05-10

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI600521B (en) * 2016-12-19 2017-10-01 中原大學 Molding structure and heating method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2585745Y (en) * 2002-12-21 2003-11-12 久达汽车零部件制造(上海)有限公司 Novel mould
CN201070663Y (en) * 2007-06-19 2008-06-11 苏州汉扬精密电子有限公司 Mold structure with heating function
KR20100010063U (en) * 2009-04-06 2010-10-14 정태중 Cooling device of mold
CN203344277U (en) * 2012-12-28 2013-12-18 深圳市银和投资发展有限公司 Planar induction heating device capable of bearing high mechanical pressure and resisting to high temperature
CN203973894U (en) * 2014-07-04 2014-12-03 福州巨昂精密模具科技有限公司 A kind of compression molding die
CN205147279U (en) * 2015-10-26 2016-04-13 东莞华程金属科技有限公司 Die casting die's mould benevolence and die casting die

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2585745Y (en) * 2002-12-21 2003-11-12 久达汽车零部件制造(上海)有限公司 Novel mould
CN201070663Y (en) * 2007-06-19 2008-06-11 苏州汉扬精密电子有限公司 Mold structure with heating function
KR20100010063U (en) * 2009-04-06 2010-10-14 정태중 Cooling device of mold
CN203344277U (en) * 2012-12-28 2013-12-18 深圳市银和投资发展有限公司 Planar induction heating device capable of bearing high mechanical pressure and resisting to high temperature
CN203973894U (en) * 2014-07-04 2014-12-03 福州巨昂精密模具科技有限公司 A kind of compression molding die
CN205147279U (en) * 2015-10-26 2016-04-13 东莞华程金属科技有限公司 Die casting die's mould benevolence and die casting die

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Address after: 523843 Guangdong Province, Dongguan city Changan town Kam Ha Jin Road No. 1 Community

Co-patentee after: Guangdong wins smart group Limited by Share Ltd

Patentee after: DONGGUAN HUACHENG METAL TECHNOLOGY CO., LTD.

Address before: 523843 Guangdong Province, Dongguan city Changan town Kam Ha Jin Road No. 1 Community

Co-patentee before: Dongguan Janus Precision Components Co., Ltd.

Patentee before: DONGGUAN HUACHENG METAL TECHNOLOGY CO., LTD.

CP01 Change in the name or title of a patent holder
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170510

Termination date: 20201026

CF01 Termination of patent right due to non-payment of annual fee