CN104399935A - Cold chamber die casting machine and mould for same - Google Patents
Cold chamber die casting machine and mould for same Download PDFInfo
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- CN104399935A CN104399935A CN201410616839.8A CN201410616839A CN104399935A CN 104399935 A CN104399935 A CN 104399935A CN 201410616839 A CN201410616839 A CN 201410616839A CN 104399935 A CN104399935 A CN 104399935A
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- forming cavity
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Abstract
The invention discloses a cold chamber die casting machine and a mould for the cold chamber die casting machine. The mould comprises a movable mould (1) and a fixed mould (2), wherein a molding cavity (11) is formed in the movable mould (1); the fixed mould (2) comprises a shunt nozzle (21) and a pouring gate (22) communicated between the shunt nozzle (21) and the molding cavity (11) by fluid, wherein the pouring gate (22) has a circular cross section, and the diameter of the pouring gate (22) is gradually reduced along the direction from the shunt nozzle (21) to the molding cavity (11); a circular sprue (23) is formed at an outlet of the pouring gate (22); a gas collection cavity (3) is arranged at the rear of the molding cavity (11); the gas collection cavity (3) is communicated with the molding cavity (11) and the outside by fluid. The magnesium alloy products manufactured by the mould provided by the invention are better in quality and higher in yield; furthermore, the phenomena of sand holes and cold shut emerging in the products can be reduced.
Description
Technical field
The present invention relates to foundry machinery field, particularly, relate to a kind of mould for cold-chamber die casting machine and the cold-chamber die casting machine comprising this mould.
Background technology
In prior art, magnesium-alloy material adopts the mode being similar to injector for medical purpose injected from gate end by magnesium alloy liquation and obtain shaped article by the mode that flat running channel advances to forming cavity usually by cold-chamber die casting machine.Owing to being that magnesium alloy liquation is advanced by the rear wall direction of gate end to forming cavity, and, the mobility of magnesium alloy liquation is larger, its setting rate is fast simultaneously, therefore, in shaping process, be easily mixed into bubble in magnesium alloy liquation and form sand hole, and easily occur that magnesium alloy liquation fills discontented or cold shut phenomenon away from the part of cast gate in forming cavity.Therefore, the product quality obtained by this die cast mode is poor, and qualification rate is lower.
To sum up, there is easy entrained gas when magnesium-alloy material of the prior art is shaping to form sand hole and occur that magnesium alloy liquation fills defect that is discontented or cold shut phenomenon.
Summary of the invention
The object of this invention is to provide a kind of mould for cold-chamber die casting machine and comprise the cold-chamber die casting machine of this mould, the magnesium-alloy material quality made by this mould is better, and qualification rate is higher, and can reduce in product the phenomenon occurring sand hole and cold shut.
To achieve these goals, the invention provides a kind of mould for cold-chamber die casting machine, this mould comprises dynamic model and cover half, and dynamic model is formed with forming cavity, and cover half comprises shunting nozzle and the running channel of fluid connection between shunting nozzle and forming cavity, wherein, running channel has circular cross section, and the diameter of running channel reduces to the direction of forming cavity gradually from shunting nozzle, and running channel forms circular cast gate in exit, the rear of forming cavity is provided with air collecting chamber, and this air collecting chamber fluid is communicated with forming cavity and the external world.
Preferably, air collecting chamber is formed between dynamic model and cover half.
Preferably, air collecting chamber is provided with fluid and is communicated in extraneous exhaust outlet, and this exhaust ports is provided with check valve.
Preferably, air collecting chamber is set to two, and these two air collecting chambers are arranged symmetrically with about the central axis of forming cavity.
Preferably, running channel is communicated with shunting nozzle fluid by entrance, and the span of the difference △ d between the diameter D of entrance and the diameter d of circular cast gate is: 10-86mm.
Preferably, the span of the diameter d of circular cast gate is: 4-30mm.
Preferably, the diameter D of entrance is 90mm; The diameter d of circular cast gate is 9mm.
Preferably, the central axis of circular cast gate and the central axes of forming cavity.
On the basis of such scheme, the present invention also provides a kind of cold-chamber die casting machine, and this cold-chamber die casting machine comprises mould provided by the invention.
Pass through technique scheme, mould for cold-chamber die casting machine disclosed by the invention is in the process of casting, by specially designed running channel, can make to be injected by shunting nozzle and by the molten metal of this running channel, as magnesium alloy liquation etc., spray from circular cast gate, thus magnesium alloy liquation is rearward piled up by front in forming cavity and is full of whole forming cavity and shaping; In this case, gas in forming cavity is rushed to rear by the front of forming cavity, drain in ambient atmosphere by air collecting chamber, this can reduce resistance when magnesium alloy liquation sprays on the one hand further, can also reduce the probability that sand hole appears in product on the other hand.Therefore, because mould provided by the invention changes forming direction in the process shaping for molten metal, therefore, can effectively improve in product the phenomenon occurring sand hole, and can rapid shaping, be reduced to the generation that cavity filling is discontented with magnesium alloy liquation or is occurred cold shut phenomenon, improve quality and the qualification rate of product.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the structural representation of the mould for cold-chamber die casting machine in the preferred embodiment of the present invention.
Description of reference numerals
1 fluid passage; 11 forming cavities;
2 forming cavities; 21 shunting nozzles;
22 running channels; 23 circular cast gates;
24 entrances; 3 air collecting chambers;
4 exhaust outlets.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the term position " front " used refers to the direction at the place, bottom of forming cavity 11, and " rear " specifies the direction at mould 2 place, but above-mentioned term position is not limited to the present invention.
The invention provides a kind of mould for cold-chamber die casting machine, as shown in Figure 1, this mould comprises dynamic model 1 and cover half 2, dynamic model 1 is formed with forming cavity 11, cover half 2 comprises shunting nozzle 21 and the running channel 22 of fluid connection between shunting nozzle 21 and forming cavity 11, wherein, running channel 22 has circular cross section, and the diameter of running channel 22 reduces to the direction of forming cavity 11 gradually from shunting nozzle 21, running channel 22 forms circular cast gate 23 in exit, the rear of forming cavity 11 is provided with air collecting chamber 3, and this air collecting chamber 3 fluid is communicated with forming cavity 11 and the external world.
Pass through technique scheme, mould for cold-chamber die casting machine provided by the invention is in the process of the die cast for molten metal, molten metal enters running channel 22 by shunting nozzle 21, because the diameter of running channel 22 reduces to the direction of forming cavity 11 gradually from shunting nozzle 21, therefore, when flowing out during molten metal is by circular cast gate 23, its speed becomes large to spraying from circular cast gate 23 and the bottom of directive forming cavity 11, the molten metal entering forming cavity 11 from the front (i.e. the bottom of forming cavity) of forming cavity rearward (i.e. the direction at cover half 2 place) pile up shaping.In the process, the gas in forming cavity 11 is transferred to along with the filling of molten metal in air collecting chamber 3 to be discharged outside in air.In whole shaping process, because molten metal has larger speed when circular cast gate 23 sprays, therefore, it is possible to fill up whole forming cavity 11 fast with shaping, make even dispersion Minute pores in shaping product, the sand hole phenomenon occurred in the molding mode that effective improvement is vented in the wings.In addition, the mould for cold-chamber die casting machine provided by the invention can make molten metal rapid shaping, therefore substantially improves the phenomenon that cold shut appears in shaped article.
The detailed description of the invention of the mould for cold-chamber die casting machine provided by the invention is described in detail below in conjunction with Fig. 1.It should be noted that at this, the die-cast metal that mould for cold-chamber die casting machine provided by the invention is suitable for is generally aluminium alloy, fine aluminium, magnadure, copper alloy etc., in the following description, using magnesium alloy as die-cast metal, the specific embodiment of the present invention will be described in detail.
In detailed description of the invention provided by the invention, for the particular location of air collecting chamber 3, there is no particular limitation, can be formed between dynamic model 1 and cover half 2, also can be formed on dynamic model 1, also can be formed on cover half 2.But for the ease of offering air collecting chamber 3 to improve air collecting chamber 3 working (machining) efficiency in this mould, preferably, air collecting chamber 3 is formed between dynamic model 1 and cover half 2.
On the basis of above-mentioned embodiment, can discharge in time to make the air by rushing in air collecting chamber 3, reduce air and with at utmost Shangdi, the phenomenon of dissolving in bubble in magnesium alloy liquation is improved to the impact of magnesium alloy liquation, preferably, air collecting chamber 3 is provided with fluid and is communicated in extraneous exhaust outlet 4, and the air in such air collecting chamber 3 just can be discharged from exhaust outlet 4 after forming cavity 11 and air collecting chamber 3.In order to reduce the impact of air on the magnesium alloy liquation in forming process further, prevent the air in air from entering in air collecting chamber 3, more preferably, exhaust outlet 4 place is provided with check valve.This check valve only allows air discharge from air collecting chamber 3 and do not allow air to enter air collecting chamber 3, therefore, it is possible to reduce the air capacity of dissolving in magnesium alloy liquation further.
Simultaneously, in order to accelerate deflation rate, to be reduced to the air pressure in die cavity 11, raising magnesium alloy liquation enters the speed in forming cavity 11, and preferably, air collecting chamber 3 can be set to two, two air collecting chambers 3 are set and can improve exhaust velocity significantly, and these two air collecting chambers 3 can be arranged about the axisymmetrical of forming cavity 11, make the air in forming cavity 11 discharge symmetrically, be conducive to the shaped article quality improving magnesium alloy.
In addition, running channel 22 is communicated with shunting nozzle 21 fluid by entrance 24, in order to improve jet velocity when magnesium alloy liquation enters forming cavity 11, the span of the difference △ d between the diameter D of entrance 24 and the diameter d of circular cast gate 23 can be: 10-86mm, correspondingly, the span of the diameter d of circular cast gate 23 is: 4-30mm.In this case, can ensure that magnesium alloy liquation has enough large speed when circular cast gate 23 well, thus make magnesium alloy liquation can arrive the front of forming cavity 11 rapidly.In production application, such as, the diameter D of entrance can be 90mm; The diameter d of circular cast gate 23 can be 9mm.
In addition, the particular location about circular cast gate 23 is not particularly limited, and can be arranged on any one position on cover half 2 according to actual needs.But can be distributed in equably in forming cavity 11 after entering forming cavity 11 through circular cast gate 23 to make magnesium alloy liquation, preferably, the circular central axis of cast gate 23 and the central axes of forming cavity 11, with the generation avoiding the magnesium alloy liquation in forming cavity 11 to occur the situation of upper thick and lower thin or upper-thin-lower-thick, improve the Forming Quality of diecast magnesium alloy further.
On the basis of the above, present invention also offers a kind of cold-chamber die casting machine, this cold-chamber die casting machine comprises mould provided by the invention, has higher quality and qualification rate by the metal casting of this cold-chamber die casting machine die casting.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. the mould for cold-chamber die casting machine, this mould comprises dynamic model (1) and cover half (2), described dynamic model (1) is formed with forming cavity (11), described cover half (2) comprises shunting nozzle (21) and the running channel (22) of fluid connection between described shunting nozzle (21) and described forming cavity (11), it is characterized in that, described running channel (22) has circular cross section, and the diameter of described running channel (22) reduces to the direction of described forming cavity (11) gradually from described shunting nozzle (21), described running channel (22) forms circular cast gate (23) in exit, the rear of described forming cavity (11) is provided with air collecting chamber (3), this air collecting chamber (3) fluid is communicated with described forming cavity (11) and the external world.
2. the mould for cold-chamber die casting machine according to claim 1, is characterized in that, described air collecting chamber (3) is formed between described dynamic model (1) and described cover half (2).
3. the mould for cold-chamber die casting machine according to claim 1, is characterized in that, described air collecting chamber (3) is provided with fluid and is communicated in extraneous exhaust outlet (4), and this exhaust outlet (4) place is provided with check valve.
4. the mould for cold-chamber die casting machine according to claim 3, it is characterized in that, described air collecting chamber (3) is set to two, and these two air collecting chambers (3) are arranged symmetrically with about the central axis of described forming cavity (11).
5. the mould for cold-chamber die casting machine according to claim 1, it is characterized in that, described running channel (22) is communicated with described shunting nozzle (21) fluid by entrance (24), and the span of the difference △ d between the diameter D of described entrance (24) and the diameter d of described circular cast gate (23) is: 10-86mm.
6. the mould for cold-chamber die casting machine according to claim 5, is characterized in that, the span of the diameter d of described circular cast gate (23) is: 4-30mm.
7. the mould for cold-chamber die casting machine according to claim 6, is characterized in that, the diameter D of described entrance (24) is 90mm; The diameter d of described circular cast gate (23) is 9mm.
8. the mould for cold-chamber die casting machine according to any one in claim 1-7, is characterized in that, the central axis of described circular cast gate (23) and the central axes of described forming cavity (11).
9. a cold-chamber die casting machine, is characterized in that, described cold-chamber die casting machine comprises according to the mould in claim 1-8 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410616839.8A CN104399935A (en) | 2014-11-05 | 2014-11-05 | Cold chamber die casting machine and mould for same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410616839.8A CN104399935A (en) | 2014-11-05 | 2014-11-05 | Cold chamber die casting machine and mould for same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104399935A true CN104399935A (en) | 2015-03-11 |
Family
ID=52637638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410616839.8A Pending CN104399935A (en) | 2014-11-05 | 2014-11-05 | Cold chamber die casting machine and mould for same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104399935A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014039A (en) * | 2015-08-25 | 2015-11-04 | 东莞市东升压铸模具有限公司 | Die-casting die capable of improving sand hole distribution, die-casting process and sand-hole-free product obtaining method |
| CN116652151A (en) * | 2023-07-28 | 2023-08-29 | 合肥亚明汽车部件有限公司 | Self-adjusting aluminum alloy die casting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386600A (en) * | 2001-05-22 | 2002-12-25 | 鸿富锦精密工业（深圳）有限公司 | Die casting method for casting thin-wall Mg-alloy |
| CN101791685A (en) * | 2009-12-23 | 2010-08-04 | 常州市蓝托金属制品有限公司 | Die casting mould special for ultrathin-wall non-leakage aviation aluminium alloy element |
| CN102836987A (en) * | 2012-08-23 | 2012-12-26 | 霍新杰 | Die casting mould of zinc alloy shell body |
| CN203124675U (en) * | 2013-02-16 | 2013-08-14 | 联宝(合肥)电子科技有限公司 | Horizontal type cold chamber die casting machine |
| CN204308161U (en) * | 2014-11-05 | 2015-05-06 | 镁联科技（芜湖）有限公司 | For mould and the cold-chamber die casting machine of cold-chamber die casting machine |
-
2014
- 2014-11-05 CN CN201410616839.8A patent/CN104399935A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386600A (en) * | 2001-05-22 | 2002-12-25 | 鸿富锦精密工业（深圳）有限公司 | Die casting method for casting thin-wall Mg-alloy |
| CN101791685A (en) * | 2009-12-23 | 2010-08-04 | 常州市蓝托金属制品有限公司 | Die casting mould special for ultrathin-wall non-leakage aviation aluminium alloy element |
| CN102836987A (en) * | 2012-08-23 | 2012-12-26 | 霍新杰 | Die casting mould of zinc alloy shell body |
| CN203124675U (en) * | 2013-02-16 | 2013-08-14 | 联宝(合肥)电子科技有限公司 | Horizontal type cold chamber die casting machine |
| CN204308161U (en) * | 2014-11-05 | 2015-05-06 | 镁联科技（芜湖）有限公司 | For mould and the cold-chamber die casting machine of cold-chamber die casting machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014039A (en) * | 2015-08-25 | 2015-11-04 | 东莞市东升压铸模具有限公司 | Die-casting die capable of improving sand hole distribution, die-casting process and sand-hole-free product obtaining method |
| CN105014039B (en) * | 2015-08-25 | 2017-05-31 | 东莞市东升压铸模具有限公司 | A kind of die casting for improving sand hole distribution, extrusion process and the preparation method without sand hole product |
| CN116652151A (en) * | 2023-07-28 | 2023-08-29 | 合肥亚明汽车部件有限公司 | Self-adjusting aluminum alloy die casting device |
| CN116652151B (en) * | 2023-07-28 | 2023-10-17 | 合肥亚明汽车部件有限公司 | Self-adjusting aluminum alloy die casting device |
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Application publication date: 20150311 |