CN107186194A - A kind of vacuum valve die casting Vacuuming structure in parallel with exhaustion plate - Google Patents
A kind of vacuum valve die casting Vacuuming structure in parallel with exhaustion plate Download PDFInfo
- Publication number
- CN107186194A CN107186194A CN201710596086.2A CN201710596086A CN107186194A CN 107186194 A CN107186194 A CN 107186194A CN 201710596086 A CN201710596086 A CN 201710596086A CN 107186194 A CN107186194 A CN 107186194A
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- Prior art keywords
- valve
- vacuum valve
- die casting
- vacuum
- exhaust
- Prior art date
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- Pending
Links
- 238000004512 die casting Methods 0.000 title claims abstract description 38
- 238000005086 pumping Methods 0.000 claims abstract description 11
- 230000007547 defect Effects 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 23
- 239000004411 aluminium Substances 0.000 claims description 22
- 229910052782 aluminium Inorganic materials 0.000 claims description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 22
- 238000007712 rapid solidification Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/14—Machines with evacuated die cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of vacuum valve die casting Vacuuming structure in parallel with exhaustion plate, including vacuum valve (2), exhaust block (3), vacuumize control machine (4) and vacuum-pumping tube；One end of the vacuum valve (2) is connected with the control machine (4) that vacuumizes, one end of the exhaust block (3) is connected with the control machine (4) that vacuumizes, the die cavity connection of the other end of the vacuum valve (2) and the other end of the exhaust block (3) and mould, the exhaust block (3) includes first exhaust plate (301) and second exhaust plate (305), the tooth top and tooth root of wherein first exhaust plate (301) and second exhaust plate (302) are staggered, so as to form complications and catwalk.The Vacuuming structure of the present invention, by the combination of vacuum valve and exhaustion plate, vacuum pumping valve can be solved very well and closes too early and causes die casting gas hole defect.
Description
Technical field
Embodiments of the invention belong to die casting processing technique field, more particularly, to a kind of vacuum valve and exhaust
Plate die casting Vacuuming structure in parallel.
Background technology
Compression casting is a kind of faster few Special Processes of Metal Castings method without cutting of development in modern age metal working process, and it is
By molten metal in high-voltage high-speed retrofilling casting mold, and the process of crystallization and freezing formation casting under high pressure.High-voltage high-speed is pressure
The principal character of power casting, conventional pressure is tens of MPas, and filling speed (gate velocity) is about 16~80 meter per seconds, gold
The time for belonging to liquid filling mold cavity is extremely short, about 0.01~0.2 second.Due to casting in this way, with production
Efficiency high, process is simple, and Casting tolerance is higher ranked, and surface roughness is good, and mechanical strength is big, and can save substantial amounts of machine
Tool manufacturing procedure and equipment, the advantages of saving material, therefore turned into an important component in China's foundry industry.
At present, Die Casting Industry generally carries out Die Casting with hydraulic vacuum valve and vacuumizes control.Its process：Scoop is to material
Metal aluminium liquid is poured into groove, through being delayed after a while, drift starts to move ahead, to the forward punishment in advance mouth of drift.Now, pressure chamber, stream
Road, die cavity, exhaust duct one confined space of formation, vacuum pumping valve are opened and vacuumized, and aluminium liquid is filled under this condition of negative pressure
Fill out die cavity.When aluminium liquid filling is near completion, in order to avoid aluminium liquid enters vacuum valve, vacuum valve is closed in advance.With extraneous gas
Body is exchanged in the state of isolation, and aluminium liquid continues to fill remaining die cavity and exhaust duct.
By The Ideal-Gas Equation pV=nRT
P --- refer to the pressure of perfect gas；
V --- it is the volume of perfect gas；
N --- represent the amount of gaseous matter；
T --- represent the thermodynamic temperature of perfect gas；
R --- it is ideal gas constant.
It can be seen from equation, with proceeding for filling.The volume V of gas is decreased to zero, and the amount n of gaseous matter,
Thermodynamic temperature T, ideal gas constant R are approximately constant, then gas pressure intensity p progressively becomes big to infinitely great.Again due to metal aluminium liquid
Filling die cavity is carried out in the presence of negative pressure, and aluminium liquid has the trend for being inhaled into vacuum valve, and vacuum valve often needs to close in advance.
With this, it occur frequently that water tail gas hole defect in actual production.In addition, aluminium liquid speed at ingate is 16~80 meter per seconds, although
Aluminium liquid has shock and rubbed in die cavity, but it still has certain movement velocity.Because cast shape is complicated, part tributary fortune
Dynamic very fast (such as along aluminium liquid flow direction rib), part tributary motion is relatively slow (such as perpendicular to aluminium liquid flow direction rib), if
Vacuum valve was closed late, and these move the gap that faster tributary aluminium liquid is introduced between vacuum valve valve pocket and valve element, caused true
Empty valve is blocked.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the present invention provides a kind of vacuum valve the pressure in parallel with exhaustion plate
Casting mould Vacuuming structure, it is intended that by the combination of vacuum valve and exhaustion plate, closing after vacuum valve, therewith simultaneously
The exhaustion plate of connection continues to vacuumize, and continues discharge type intracavitary residual gas, until the close gap that aluminium liquid enters between exhaustion plate,
Aluminium liquid is solidified between exhaustion plate, and now die cavity is hedged off from the outer world, and vacuum pumping valve can be solved very well and closes too early and causes production
Product gas hole defect.
To achieve these goals, the present invention provides a kind of vacuum valve die casting in parallel with exhaustion plate and vacuumizes knot
Structure, including vacuum valve, exhaust block, vacuumize control machine and vacuum-pumping tube；
One end of the vacuum valve is connected with the control machine that vacuumizes, and one end of the exhaust block vacuumizes control with described
Machine connection processed, the die cavity connection of the other end and mould of the other end of the vacuum valve and the exhaust block；
The exhaust block is used to continue to vacuumize the die cavity of the mould after vacuum valve closing, is born so as to form one
Pressure system；
The exhaust block includes first exhaust plate and second exhaust plate, wherein the tooth top and second row of the first exhaust plate
The tooth root of gas plate is staggered, so as to form complications and catwalk, the catwalk is used for aluminium liquid and enters rear rapid solidification,
Realize that die casting completely cuts off with ambient atmos, so as to avoid die casting from producing gas hole defect.
Further, the vacuum valve includes valve pocket, valve element, adapter sleeve, oil cylinder and solenoid controlled directional control valve, wherein, institute
State and through hole is provided with the middle of valve pocket, one end of the valve element passes through the through hole, and the other end is realized by the adapter sleeve and oil cylinder
Connection, the oil cylinder is provided with solenoid controlled directional control valve, and the solenoid controlled directional control valve is used to be controlled according to punch stroke signal
Oil cylinder enters fuel-displaced, so that advance and retrogressing with movable valve plug, valve element advance so as to have gap with valve pocket, bleed-off passage is opened, or
Valve element is retreated so that with valve pocket gapless, bleed-off passage is closed.
Further, the top of the exhaust block is provided with first interface, and the first interface is vacuumized for connecting the external world
Equipment.
Further, the bottom of the exhaust block is provided with second interface, and the second interface is used for the type with the mould
Chamber is connected, and mould is vacuumized so as to realize.
Further, the centre position of the mould is provided with insert, one end of the valve element pass through after the through hole with institute
State insert and realize connection.
Further, the lower end of the insert is provided with hopper, for the feeding-passage as the mould.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
(1) Vacuuming structure of the invention, by the combination of vacuum valve and exhaustion plate, is closed after vacuum valve, therewith
Exhaustion plate in parallel continues to vacuumize, and continues discharge type intracavitary residual gas, until narrow and small that aluminium liquid enters between exhaustion plate
Gap, aluminium liquid is solidified between exhaustion plate, and now die cavity is hedged off from the outer world, and vacuum pumping valve can be solved very well and closes too early and causes
Product air holes defect.
(2) Vacuuming structure of the invention, by the combination of vacuum valve and exhaustion plate, is closed after vacuum valve, therewith
Exhaustion plate in parallel continues to vacuumize, and continues discharge type intracavitary residual gas, can solve very well former vacuum pumping valve closed it is slow
And cause the problem of vacuum valve is fed.
Brief description of the drawings
Fig. 1 is a kind of vacuum valve of embodiment of the present invention die casting Vacuuming structure arrangement principle in parallel with exhaustion plate
Figure；
Fig. 2 is a kind of front view of vacuum valve of embodiment of the present invention die casting Vacuuming structure in parallel with exhaustion plate；
Fig. 3 is a kind of left view of vacuum valve of embodiment of the present invention die casting Vacuuming structure in parallel with exhaustion plate；
Fig. 4 is the vacuum that a kind of vacuum valve of embodiment of the present invention die casting Vacuuming structure in parallel with exhaustion plate is related to
Valve arrangement schematic diagram；
Fig. 5 is that a kind of vacuum valve of embodiment of the present invention die casting Vacuuming structure in parallel with exhaustion plate is related to first row
Gas plate structural front view；
Fig. 6 is second that a kind of vacuum valve of embodiment of the present invention die casting Vacuuming structure in parallel with exhaustion plate is related to
Exhaustion plate structural front view.
In all of the figs, same reference represents identical technical characteristic, is specially：1- moulds, 2- vacuum valves,
3- exhaust blocks, 4- vacuumize control machine, 5- hoppers, 6- inserts, 201- valve pockets, 202- valve elements, 203- adapter sleeves, 204- oil cylinders,
205- solenoid controlled directional control valves, 301- first exhausts plate, 302- first interfaces, 303- second interfaces, 304- second exhaust plates.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below that
Not constituting conflict between this can just be mutually combined.
Fig. 1 is a kind of die casting Vacuuming structure arrangement signal in parallel with exhaustion plate of vacuum valve of the embodiment of the present invention
Figure.As shown in figure 1, the Vacuuming structure includes vacuum valve 2, exhaust block 3 and vacuumizes control machine 4.Wherein, the one of vacuum valve 2
Hold and vacuumize control machine 4 to connect, one end of exhaustion plate 3 is connected with vacuumizing control machine 4, the other end of vacuum valve 2 and exhaust
The other end of plate 3 is connected with mould 1.It is in parallel therewith after vacuum valve 2 is closed by the combination of vacuum valve and exhaustion plate
Exhaustion plate 3 continues to vacuumize, and vacuum pumping valve can be solved very well and closes too early and causes product air holes defect.
Fig. 2 is a kind of front view of vacuum valve of embodiment of the present invention die casting Vacuuming structure in parallel with exhaustion plate；
Fig. 3 is a kind of left view of vacuum valve of embodiment of the present invention die casting Vacuuming structure in parallel with exhaustion plate.Such as Fig. 2 and figure
Shown in 3, in one embodiment of the invention, the insert 6 of die casting is located therein a position, and its lower end is provided with hopper 5, very
Empty valve and exhaust block are all arranged in insert so that vacuum valve 2 and exhaust block 3 realize parallel connection.
Fig. 4 is the vacuum that a kind of vacuum valve of embodiment of the present invention die casting Vacuuming structure in parallel with exhaustion plate is related to
Valve arrangement schematic diagram.As shown in figure 4, the vacuum valve includes valve pocket 201, valve element 202, adapter sleeve 203, oil cylinder 204 and electromagnetism control
Reversal valve 205 processed.It is provided with through hole in the middle of valve pocket 201, one end of valve element 202, which is passed through, to be realized with insert 6 after the through hole and be connected, another
End is realized with oil cylinder 204 by adapter sleeve 203 and is connected, and solenoid controlled directional control valve 205 is provided with oil cylinder 204.Electromagnetic Control is changed
Enter fuel-displaced according to punch stroke signal control cylinder to valve (205), so that advance and retrogressing with movable valve plug (302).Before valve element
When entering, it has gap with valve pocket (201), and bleed-off passage is opened；When valve element is retreated, itself and valve pocket (201) gapless, bleed-off passage
Close.
Fig. 5 is that a kind of vacuum valve of embodiment of the present invention die casting Vacuuming structure in parallel with exhaustion plate is related to first row
Gas plate front view, Fig. 6 is that a kind of vacuum valve of embodiment of the present invention die casting Vacuuming structure in parallel with exhaustion plate is related to
Second exhaust plate structural front view, as shown in Figure 5 and Figure 6, exhaust block structure include first exhaust plate 301, first interface 302,
Second interface 303 and second exhaust plate 304.The tooth top and tooth root staggered row of first exhaust plate (301) and second exhaust plate (302)
Cloth, so as to form complications and catwalk.Aluminium liquid enters this tortuous and rapid solidification after close gap, now die casting with it is outer
Boundary is gas-insulated (now vacuumizing control machine still carrying out vacuumizing action), and vacuum pumping valve can be solved very well and is closed too early
And cause product air holes defect.The vacuum extractor current with Die Casting Industry is compared, after hydraulic vacuum valve is closed, the present apparatus
Auxiliary smoke discharging device-exhaust block, because its shape is tortuous, gap is narrow and small, aluminium liquid area of dissipation big, thus aluminium liquid runs into exhaustion plate
Can rapid solidification, aluminium liquid will not be made to enter vacuum system, can solve very well former vacuum pumping valve closed late and cause vacuum
The problem of valve is fed.
As shown in Figure 5 and Figure 6, first interface 302 is provided with the top of first exhaust plate 301 and second exhaust plate 305,
The bottom of first exhaust plate 301 and second exhaust plate 305 is provided with second interface 303, and first interface 302 is taken out very for connecting the external world
Null device, second interface 303 is used to be connected with mold cavity, and die casting content portion is vacuumized so as to realize.
The die casting vacuum extractor of the present invention, enhances the exhaust of die casting water tail, reduces die casting gas hole defect,
Overcome conventional vacuum valve and frequently feed defect, improve production efficiency.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (6)
1. a kind of vacuum valve die casting Vacuuming structure in parallel with exhaustion plate, it is characterised in that including vacuum valve (2), row
Air parcel (3), vacuumize control machine (4) and vacuum-pumping tube；
One end of the vacuum valve (2) is connected with the control machine (4) that vacuumizes, and one end of the exhaust block (3) is taken out with described
Vacuum control machine (4) is connected, and the die cavity of the other end of the vacuum valve (2) and the other end of the exhaust block (3) and mould connects
Connect；
The exhaust block (3) is used to continue to vacuumize the die cavity of the mould (1) after vacuum valve (2) closing, so as to be formed
One negative pressure system；
The exhaust block (3) includes first exhaust plate (301) and second exhaust plate (305), wherein the first exhaust plate (301)
Tooth top and second exhaust plate (302) tooth root it is staggered, so as to form tortuous and catwalk, the catwalk is used for
Aluminium liquid enters rear rapid solidification, realizes that die casting completely cuts off with ambient atmos, so as to avoid die casting from producing gas hole defect.
2. a kind of vacuum valve according to claim 1 die casting Vacuuming structure in parallel with exhaustion plate, its feature exists
In the vacuum valve (2) includes valve pocket (201), valve element (202), adapter sleeve (203), oil cylinder (204) and solenoid controlled directional control valve
(205), wherein, through hole is provided with the middle of the valve pocket (201), one end of the valve element (202) passes through the through hole, and the other end leads to
Cross the adapter sleeve (203) to be connected with oil cylinder (204) realization, the oil cylinder (204) is provided with solenoid controlled directional control valve (205),
The solenoid controlled directional control valve (205) is used to enter fuel-displaced according to punch stroke signal control cylinder (204), so that with movable valve plug
(302) advance and retrogressing, valve element (302) advance so as to have gap with valve pocket (201), and bleed-off passage is opened, or valve element is retreated
So that with valve pocket (201) gapless, bleed-off passage is closed.
3. a kind of vacuum valve according to claim 1 or 2 die casting Vacuuming structure in parallel with exhaustion plate, its feature
It is, the top of the exhaust block (3) is provided with first interface (302), and the first interface (302) vacuumizes for connecting the external world
Equipment.
4. a kind of vacuum valve according to any one of claim 1-3 die casting in parallel with exhaustion plate vacuumizes knot
Structure, it is characterised in that the bottom of the exhaust block (3) is provided with second interface (303), the second interface (303) is used for and institute
The die cavity connection of mould is stated, mould (1) is vacuumized so as to realize.
5. a kind of vacuum valve according to any one of claim 1-4 die casting in parallel with exhaustion plate vacuumizes knot
Structure, it is characterised in that the centre position of the mould (1) is provided with insert (6), one end of the valve element (202) leads to through described
Insert described in Kong Houyu (6) realizes connection.
6. a kind of vacuum valve according to any one of claim 1-5 die casting in parallel with exhaustion plate vacuumizes knot
Structure, it is characterised in that the lower end of the insert (6) is provided with hopper (5), for the feeding-passage as the mould (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710596086.2A CN107186194A (en) | 2017-07-20 | 2017-07-20 | A kind of vacuum valve die casting Vacuuming structure in parallel with exhaustion plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710596086.2A CN107186194A (en) | 2017-07-20 | 2017-07-20 | A kind of vacuum valve die casting Vacuuming structure in parallel with exhaustion plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107186194A true CN107186194A (en) | 2017-09-22 |
Family
ID=59884500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710596086.2A Pending CN107186194A (en) | 2017-07-20 | 2017-07-20 | A kind of vacuum valve die casting Vacuuming structure in parallel with exhaustion plate |
Country Status (1)
| Country | Link |
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| CN (1) | CN107186194A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052592A (en) * | 2018-01-18 | 2019-07-26 | 小出（台州）模具有限公司 | Thin-wall part vacuum die-casting mould |
| CN110238361A (en) * | 2019-06-24 | 2019-09-17 | 浙江辉旺机械科技股份有限公司 | It is a kind of to vacuumize buffer structure for compression mod |
| CN111097888A (en) * | 2020-02-24 | 2020-05-05 | 江苏睿甲金属科技股份有限公司 | Double-pumping type vacuum die-casting system |
| CN115156500A (en) * | 2022-06-14 | 2022-10-11 | 中国第一汽车股份有限公司 | Development method of integrated die-casting large automobile body die |
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| CN207086872U (en) * | 2017-07-20 | 2018-03-13 | 广东鸿图武汉压铸有限公司 | A kind of vacuum valve die casting Vacuuming structure in parallel with exhaustion plate |
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2017
- 2017-07-20 CN CN201710596086.2A patent/CN107186194A/en active Pending
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| CN1150921A (en) * | 1995-06-08 | 1997-06-04 | 东芝机械株式会社 | Method of controlling vacuum in vacuum die-casting and vacuum control system for carrying out the same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052592A (en) * | 2018-01-18 | 2019-07-26 | 小出（台州）模具有限公司 | Thin-wall part vacuum die-casting mould |
| CN110238361A (en) * | 2019-06-24 | 2019-09-17 | 浙江辉旺机械科技股份有限公司 | It is a kind of to vacuumize buffer structure for compression mod |
| CN111097888A (en) * | 2020-02-24 | 2020-05-05 | 江苏睿甲金属科技股份有限公司 | Double-pumping type vacuum die-casting system |
| CN115156500A (en) * | 2022-06-14 | 2022-10-11 | 中国第一汽车股份有限公司 | Development method of integrated die-casting large automobile body die |
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Application publication date: 20170922 |
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