CN105234369A - 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
CN105234369A
CN105234369A CN201510707975.2A CN201510707975A CN105234369A CN 105234369 A CN105234369 A CN 105234369A CN 201510707975 A CN201510707975 A CN 201510707975A CN 105234369 A CN105234369 A CN 105234369A
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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.)
Granted
Application number
CN201510707975.2A
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Chinese (zh)
Other versions
CN105234369B (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
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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 of die casting and die casting
Technical field
The present invention relates to the die-casting technique of metal, particularly relate to a kind of die and die casting of die casting.
Background technology
The shaping chemical composition due to material itself of aluminium alloy compression casting, impurity and content thereof, the institutional framework of alloy and condition of molding determine product and have pore, shrinkage cavity, flow liner, the bad orders such as watermark, this makes aluminium alloy compression casting shaped article directly can not do anodized, if done anodized, also the product of high-quality cannot be obtained, existing processing mode is generally do anodized again after adopting spraying to do outward appearance process aluminium alloy compression casting shaped article, but can treatment process be increased like this, waste time and energy, or do anode process again after the shape becoming to want by Product processing by the technique of full CNC machining, but CNC processing charges is expensive, cost is very high.
Summary 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, in particular for die and the die casting of the die casting of aluminium alloy.
Technical problem of the present invention is solved by following technical scheme:
A kind of die of die casting, the product die cavity formed between the bottom of described front cavity and the top of described rear cavity after comprising rear cavity that front cavity mates with described front cavity, matched moulds, the top of die in the rear be also provided with into cast gate and go out cast gate, the end face of described front cavity is provided with heating part, the area of described heating part is enough to cover whole described product die cavity, enters cast gate and goes out the temperature difference between cast gate described in reducing.
Preferably, described heating part is by the coil formed after wire coiling, and described wire is connected on the end face of described front cavity, and the two ends of described coil are used for being connected with external power source respectively as positive pole, negative pole.
Preferably, on the end face of described front cavity, the position of corresponding lead is also provided with wire casing, and described wire is placed in described wire casing and is connected with the end face of described front cavity.
Preferably, described die also comprises front mould backing plate, and described front mould backing plate is connected to cover described heating part with the end face of described front cavity, and described positive pole is connected with described external power source through described front mould backing plate with negative pole.
Preferably, the active area in the magnetic field formed after described coil electricity is greater than 1/6 ~ 1/3 of described product type cavity area.
Preferably, the two ends of described coil connect a contact post respectively, and described positive pole is connected with external power source respectively by described contact post with negative pole.
Preferably, described coil is formed by the even coiling of described wire and is positioned at directly over described product die cavity, and the wire of the outmost turns of described coil surrounds described product die cavity.
Preferably, the material of described wire is copper.
Preferably, enter cast gate and go out the temperature difference≤50 DEG C between cast gate described in the heat that described heating part provides is enough to make.
A kind of die casting, comprises described die.
The beneficial effect that the present invention is compared with the prior art comprises: the present invention arranges heating part for reducing into cast gate and the temperature difference that goes out between cast gate on the end face of front cavity, owing to having a narrow range of temperature, the product trace that cast gate causes because raw material flowing velocity is slow can be avoided out; The heat energy that heating part produces simultaneously can reduce the wetability of raw material and die contact surface, suppress the heterogeneous forming core in cavity filling process, reduce viscosity, and then improve liquidity, improve mold-filling capacity, combine tightr when raw material is solidified, improve compactness and the mechanical property of product, the defect such as pore, shrinkage cavity, flow liner, watermark avoiding raw material to produce when flowing, adopts the shaping Al-alloy products of die casting of the present invention can have higher quality, directly can carry out anodized.
Accompanying drawing explanation
Fig. 1 is the structural representation of the die of die casting in the preferred embodiment of the present invention;
Fig. 2 is the structural representation after front cavity in the die of die casting in the preferred embodiment of the present invention removes coil;
Fig. 3 is the structural representation of the rear cavity in the die of die casting in the preferred embodiment of the present invention;
Fig. 4 is the structural representation of the die of die casting in another preferred embodiment of the present invention;
Fig. 5 is the cross-sectional schematic of Fig. 4.
Detailed description of the invention
Below contrast accompanying drawing and combine preferred embodiment the invention will be further described.
The invention provides a kind of die of die casting, in a specific embodiment, the product die cavity formed between the bottom of described front cavity and the top of described rear cavity after this die comprises rear cavity that front cavity mates with described front cavity, matched moulds, the top of die is provided with into cast gate and goes out cast gate in the rear, the end face of described front cavity is provided with heating part, the area of described heating part is enough to cover whole described product die cavity, enters cast gate and goes out the temperature difference between cast gate described in reducing.
In a preferred embodiment, as Fig. 1, shown in 2 and 3, die comprises front cavity 1, the rear cavity 2 of mating with front cavity 1, the product die cavity 3 (as shown in Figure 5) formed between the bottom of front cavity 1 and the top of rear cavity 2 after matched moulds, the top of rear cavity 2 be provided with into cast gate 21 and go out cast gate 22, the end face of front cavity 1 is provided with heating part, this heating part is by the coil formed after wire 4 coiling, on the end face of front cavity 1, the position of corresponding lead 4 is also provided with wire casing 5, wire 4 is placed in wire casing 5 and is connected with the end face of front cavity 1 that (wire casing 5 is can be preferred, if there is no wire casing 5, then can directly wire 4 be connected on the end face of front cavity 1), all wires 4 are positioned in same plane, the two ends of coil are respectively as positive pole, negative pole is used for being connected with external power source.Coil is formed a loop by the even coiling of wire 4 and is positioned at directly over product die cavity, the wire of the outmost turns of coil surrounds product die cavity and (is also, the area of coil is greater than the area of product die cavity, in this example, be 20mm near the wire of outmost turns entering cast gate with the spacing on limit near the product die cavity entering cast gate, the same wire of outmost turns near going out cast gate is 20mm with the spacing on limit near the product die cavity going out cast gate), the area of such heating part is enough to cover whole product die cavity, to reduce into cast gate 21 and the temperature difference that goes out between cast gate 22, in this example, the material of wire is copper, the heat that heating part provides is enough to make into cast gate and the temperature difference≤50 DEG C that go out between cast gate.
In this example, the two ends of coil connect a contact post 6 respectively, and positive pole is connected with external power source respectively by contact post 6 with negative pole, in other embodiments, also without contact post, can draw after wire bending.
Preferably, in another preferred embodiment, as shown in Figures 4 and 5, die also comprises front mould backing plate 7, and front mould backing plate 7 is connected to cover whole coil with the end face of front cavity 1, thus protection coil, positive pole is connected with external power source through front mould backing plate 7 with negative pole.
The present invention also provides a kind of die casting, and it comprises the die in above preferred embodiment, and this die casting also comprises the miscellaneous part of this area routine certainly, as mould bases, cooling system, locating dowel, screw etc.Need first coil to be connected formation magnetic field before aluminium alloy compression casting is shaping, the active area in magnetic field is preferably greater than 1/6 ~ 1/3 of product type cavity area, heat energy is converted to by magnetic field energy, keep constant temperature (if because the temperature of die casting is too low after being heated to die the temperature can carrying out watering die casting raw material as far as possible, then cast-internal short texture, air discharges difficulty, is difficult to shaping; If mold temperature is too high, then cast-internal structure is too fine and close, and cause foundry goods easy " weldering " to invest in die cavity, sticking to mould not easily draws off foundry goods.Too high temperature can make die itself expand simultaneously, affects casting dimension accuracy.Therefore, control within 50 DEG C better by entering cast gate with the temperature difference going out cast gate), because Distribution of Magnetic Field is even, actual induction active area is large, homogeneous heating, and the efficiency of heating surface is high, after the raw material that aluminium alloy compression casting is shaping pours into the product die cavity of die, enter cast gate, go out cast gate, the temperature of product type cavity segment is balanced, the temperature difference is very little, makes die-cast product have comparatively quality product matter; The heat energy utilizing coil to change can improve the interfacial tension of raw material, does not need feed change composition, does not pollute filling shaped material, and Design of Dies also can be made to simplify, and specially need not change the position into cast gate and the degree of depth, can flexible design; Be there is no the bad orders such as pore, shrinkage cavity, flow liner, watermark by the Al-alloy products that this die casting is shaping, directly can do anodized, therefore, the invention provides the effective way improving aluminium alloy castings surface anodization quality.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, some equivalent to substitute or obvious modification can also be made, and performance or purposes identical, all should be considered as belonging to protection scope of the present invention.

Claims (10)

1. the die of a die casting, the product die cavity formed between the bottom of described front cavity and the top of described rear cavity after comprising rear cavity that front cavity mates with described front cavity, matched moulds, the top of die in the rear be also provided with into cast gate and go out cast gate, it is characterized in that: on the end face of described front cavity, be provided with heating part, the area of described heating part is enough to cover whole described product die cavity, enters cast gate and goes out the temperature difference between cast gate described in reducing.
2. the die of die casting as claimed in claim 1, it is characterized in that: described heating part is by the coil formed after wire coiling, described wire is connected on the end face of described front cavity, and the two ends of described coil are used for being connected with external power source respectively as positive pole, negative pole.
3. the die of die casting as claimed in claim 2, is characterized in that: on the end face of described front cavity, the position of corresponding lead is also provided with wire casing, and described wire is placed in described wire casing and is connected with the end face of described front cavity.
4. the die of die casting as claimed in claim 2, it is characterized in that: described die also comprises front mould backing plate, described front mould backing plate is connected to cover described heating part with the end face of described front cavity, and described positive pole is connected with described external power source through described front mould backing plate with negative pole.
5. the die of die casting as claimed in claim 2, is characterized in that: the active area in the magnetic field formed after described coil electricity is greater than 1/6 ~ 1/3 of described product type cavity area.
6. the die of the die casting as described in any one of claim 2-5, is characterized in that: the two ends of described coil connect a contact post respectively, and described positive pole is connected with external power source respectively by described contact post with negative pole.
7. the die of die casting as claimed in claim 2, is characterized in that: described coil is formed by the even coiling of described wire and is positioned at directly over described product die cavity, and the wire of the outmost turns of described coil surrounds described product die cavity.
8. the die of die casting as claimed in claim 2, is characterized in that: the material of described wire is copper.
9. the die of die casting as claimed in claim 1, is characterized in that: enter cast gate and go out the temperature difference≤50 DEG C between cast gate described in the heat that described heating part provides is enough to make.
10. a die casting, is characterized in that: comprise 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 true CN105234369A (en) 2016-01-13
CN105234369B CN105234369B (en) 2017-05-10

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Cited By (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

Cited By (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

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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.

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

Granted publication date: 20170510

Termination date: 20201026