CN108941500A - Vacuum head for high-pressure casting mold - Google Patents
Vacuum head for high-pressure casting mold Download PDFInfo
- Publication number
- CN108941500A CN108941500A CN201810728495.8A CN201810728495A CN108941500A CN 108941500 A CN108941500 A CN 108941500A CN 201810728495 A CN201810728495 A CN 201810728495A CN 108941500 A CN108941500 A CN 108941500A
- Authority
- CN
- China
- Prior art keywords
- vacuum head
- plug
- pressure casting
- casting mold
- gas
- 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
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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
- B22D17/145—Venting means therefor
Abstract
This case is related to a kind of vacuum head for high-pressure casting mold, comprising: vacuum head ontology, to be cylindric, inside offer top be it is coniform, lower part is columned cavity, is equipped with escape pipe at the top of the cavity；Plug, shape and cavity are adapted, top be it is coniform, lower part be it is cylindric, outlet passageway is offered in plug；Vacuum head for high-pressure casting mold of the invention, ventilatory capacity is big, pumped vacuum systems can be made to be rapidly completed to vacuumize, simultaneously, when high pressure fills melt, the closing to gas passage in vacuum head can be rapidly completed in plug under the impact of melt, prevent melt from overflowing, avoiding closing gas passage in advance leads to be evacuated insufficient or gas passage and close occur the problem of melt enters pumped vacuum systems not in time.
Description
Technical field
The invention belongs to high-pressure casting fields, and in particular to a kind of vacuum head for high-pressure casting mold.
Background technique
High-pressure casting is so that liquid or semi-liquid metal is filled die casting type with higher speed under high pressure effect
Chamber, and form under stress and solidify and the method that obtains casting.
Usually will be to type chamber forvacuum when high-pressure casting, the pumped vacuum systems of existing popular high-pressure casting, by being arranged in
Type chamber finally fills the dentation exhaust duct and the subsequent vacuum system composition of exhaust duct at type position.When evacuated die-casting process, casting complete, pressure
After head closing cast gate, the vacuum valve after dentation exhaust duct is opened, and is vacuumized by dentation exhaust duct to type chamber；This is vacuumized
The cut-off of movement is realized by " filling type melt flow to enter dentation exhaust duct, be quenched quick frozen plug evacuation passageway ".For
It effectively prevent swiftly flowing melt and enters pumped vacuum systems because of that cannot solidify in the dentation exhaust duct, the dentation of use
The thinner thickness of exhaust duct, overflow section product are narrow, and exhaust speed is slow, it is difficult to make type chamber within the extremely short die-castingmold filling time
Reach ideal vacuum degree.
Another conventional vacuum pumping method is that finally to fill the single that position installation is controlled by ram position in type chamber true
Empty valve, opens up thereafter straight-through exhaust duct, and exhaust duct of the type cavity gas through single vacuum valve and thereafter enters negative-pressure cup.To prevent from melting
Body enters single vacuum valve and results in blockage, and to close vacuum valve in advance, causes to be evacuated insufficient, and the intracavitary residual gas of type is more；
Extend pumpdown time if high vacuum is obtained, vacuum valve closing occurs melt not in time and easily and enters spool, and damage single is true
Empty valve.
Summary of the invention
The object of the present invention is to provide a kind of vacuum heads that Quick air-discharge can be realized in high-pressure casting.
It is a further object to provide the vacuum heads that one kind can be closed in time after the completion of melt filling.
In order to solve the above-mentioned technical problem, the invention discloses a kind of vacuum heads for high-pressure casting mold, comprising:
Vacuum head ontology, to be cylindric, inside offer top be it is coniform, lower part is columned cavity, institute
It states and is equipped with escape pipe at the top of cavity；
Vacuum-pumping tube is shaped in vacuum head ontology top, is connected with escape pipe；
Plug, shape and cavity are adapted, top be it is coniform, lower part be it is cylindric, it is logical that outlet is offered in plug
Road, the air inlet of the outlet passageway are set to plug bottom, and in coniform, air inlet top is connected with the first gas off-take, the
One gas off-take top is connected with the second gas off-take, and the second gas off-take lower part is connected with third gas off-take, and third gas off-take is
It is equipped with the curved channel of 1-2 U-bend folding, perforation to the upper part of the plug in the horizontal direction.First, second and third gas off-take can provide
Quick airflow channel, coniform air inlet increase the forced area impacted when high-pressure casting filling to plug, curved shape
Third gas off-take increase the time and resistance that melt passes through in plug, so that the kinetic energy of melt is more dispersed in plug
On.
Preferably, the vacuum head body bottom portion offers the circular through hole to match with air inlet port size.
Preferably, the third gas off-take has symmetrically arranged 2.Two or more pieces third gas off-take can not only increase
Add ventilatory capacity, can also make melt uniform to the impact force of plug.
Preferably, second gas off-take is round or cone.Melt directly impacts after through the first gas off-take
On the second gas off-take inner wall, plug is made to obtain enough kinetic energy.
Preferably, compared with minister 5-10mm under plug, making plug in the cavity has the activity of 5-10mm for the cavity lower part
Space.It vacuumizes constantly, plug is since own wt is in cavity lower part, and mould type intracavity gas is successively via air inlet,
One, two, three gas off-takes, escape pipe and vacuum-pumping tube are extracted；When melt is filled, melt high speed enters air inlet after being full of type chamber
Mouthful, when passing through the first, second and third gas off-take, plug is caused to impact, assign the enough upward power of plug, plug is fast upwards
Speed movement, closes third gas off-take and escape pipe, and melt is prevented to overflow.
Preferably, the vacuum head ontology is divided into the movable part and fixed part being connected through a screw thread.It dismantles movable part,
It can be taken off plug to be cleared up.
Preferably, the plug is two halves along plane cutting where third gas off-take, and two cutting planes are mutually matched
Zigzag.Zigzag section can increase the air-tightness of cutting plane after two demifacet plug splits.It, will with tool after taking out plug
Its dimidiation is cleared up the melt residue in the first, second and third gas off-take, is reinstalled after spraying, and investment makes again
With.
Preferably, the arc convex that diameter and escape pipe match is equipped at the top of the plug.Arc convex can be closed
Escape pipe.
Preferably, the arc convex height is 3-4mm.The entirety that excessively high arc convex will affect vacuum head is logical
Gas efficiency.
The utility model has the advantages that
Vacuum head for high-pressure casting mold of the invention, ventilatory capacity is big, can make pumped vacuum systems that pumping be rapidly completed
Vacuum, meanwhile, when high pressure fills melt, plug can be rapidly completed to gas passage in vacuum head under the impact of melt
Closing, prevents melt from overflowing, and avoids to close gas passage in advance and lead to be evacuated the closing of insufficient or gas passage and goes out not in time
The problem of existing melt enters pumped vacuum systems.
Detailed description of the invention
Fig. 1 is the vacuum head structural schematic diagram for high-pressure casting mold.
Fig. 2 is plug cutting plane schematic diagram.
Specific embodiment
Below by embodiment, the present invention is described in further detail, to enable those skilled in the art referring to specification
Text can be implemented accordingly.
Such as " have " it should be appreciated that used herein, "comprising" and " comprising " term are not precluded one or more
The presence or addition of a other elements or combinations thereof.
Embodiment 1
As shown in Figure 1, 2, a kind of vacuum head for high-pressure casting mold, comprising:
Vacuum head ontology 1, to be cylindric, inside offer top be it is coniform, lower part is columned cavity 2,
Escape pipe 201 is equipped at the top of the cavity；
Vacuum-pumping tube 3 is shaped in vacuum head ontology top, is connected with escape pipe 201；
Plug 4, shape and cavity are adapted, top be it is coniform, lower part be it is cylindric, it is logical that outlet is offered in plug
Road, the air inlet 401 of the outlet passageway are set to plug bottom, and in coniform, air inlet top is connected with the first gas off-take 402
Logical, 402 top of the first gas off-take is connected with the second gas off-take 403,403 lower part of the second gas off-take and 404 phase of third gas off-take
Connection, third gas off-take 404 are the curved channel for being equipped with 1 U-bend folding 405 in the horizontal direction, perforation to 4 top of plug.
The vacuum head body bottom portion offers the circular through hole 5 to match with air inlet port size.
The third gas off-take 404 has symmetrically arranged 2.
Second gas off-take 403 is circle.
2 lower part of cavity minister 8mm lower compared with plug 4, makes plug 4 have certain activity space in cavity 2.
The vacuum head ontology is divided into the movable part 101 and fixed part 102 being connected through a screw thread.
The plug 4 is two halves along the 404 place plane cutting of third gas off-take, and two cutting planes 406 are the saw being mutually matched
Tooth form.
The arc convex 407 that diameter and escape pipe match is equipped at the top of the plug 4.
407 height of arc convex is 4mm.
Embodiment 2
The vacuum head of embodiment 1 is mounted on high-pressure casting mold top, vacuum-pumping tube 3 is connected with pumped vacuum systems
It is logical, after forvacuum, melt is injected under high pressure, melt enters vacuum head after filling up mold cavity, and moving up plug 4 will take out very
The air flue of bear blocks.
Since melt filling is completed in high-pressure casting usually in 0.1-0.2s, the present invention can effectively block gas in a short time
Road prevents melt excessive or enters pumped vacuum systems.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and embodiment shown and described herein.
Claims (9)
1. a kind of vacuum head for high-pressure casting mold characterized by comprising
Vacuum head ontology, to be cylindric, inside offer top be it is coniform, lower part is columned cavity, the chamber
Escape pipe is equipped at the top of body；
Vacuum-pumping tube is shaped in vacuum head ontology top, is connected with escape pipe；
Plug, shape and cavity are adapted, top be it is coniform, lower part be it is cylindric, outlet passageway is offered in plug, institute
The air inlet for stating outlet passageway is set to plug bottom, and in coniform, air inlet top is connected with the first gas off-take, the first outlet
Road top is connected with the second gas off-take, and the second gas off-take lower part is connected with third gas off-take, and third gas off-take is in level
Direction is equipped with the curved channel of 1-2 U-bend folding, perforation to the upper part of the plug.
2. being used for the vacuum head of high-pressure casting mold as described in claim 1, which is characterized in that the vacuum head ontology
Bottom offers the circular through hole to match with air inlet port size.
3. being used for the vacuum head of high-pressure casting mold as described in claim 1, which is characterized in that the third gas off-take has
Symmetrically arranged 2.
4. being used for the vacuum head of high-pressure casting mold as described in claim 1, which is characterized in that second gas off-take is
Round or cone.
5. being used for the vacuum head of high-pressure casting mold as described in claim 1, which is characterized in that the cavity lower part is relatively stifled
The lower minister 5-10mm of head, making plug in the cavity has the activity space of 5-10mm.
6. being used for the vacuum head of high-pressure casting mold as described in claim 1, which is characterized in that the vacuum head ontology
It is divided into the movable part and fixed part being connected through a screw thread.
7. being used for the vacuum head of high-pressure casting mold as described in claim 1, which is characterized in that the plug goes out along third
Plane cutting is two halves where air flue, and two cutting planes are the zigzag being mutually matched.
8. being used for the vacuum head of high-pressure casting mold as described in claim 1, which is characterized in that be equipped at the top of the plug
The arc convex that diameter and escape pipe match.
9. being used for the vacuum head of high-pressure casting mold as described in claim 1, which is characterized in that the arc convex height
For 3-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728495.8A CN108941500B (en) | 2018-07-05 | 2018-07-05 | Vacuum-pumping head for high-pressure casting die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728495.8A CN108941500B (en) | 2018-07-05 | 2018-07-05 | Vacuum-pumping head for high-pressure casting die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108941500A true CN108941500A (en) | 2018-12-07 |
| CN108941500B CN108941500B (en) | 2020-07-14 |
Family
ID=64485768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810728495.8A Active CN108941500B (en) | 2018-07-05 | 2018-07-05 | Vacuum-pumping head for high-pressure casting die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108941500B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60115662U (en) * | 1984-01-11 | 1985-08-05 | 東芝機械株式会社 | Vacuum shut off valve for die casting machine |
| JPS6234657A (en) * | 1985-08-07 | 1987-02-14 | Toyota Motor Corp | Device for venting gas in metallic mold |
| JPH02209214A (en) * | 1989-02-10 | 1990-08-20 | Teijin Ltd | Venting device of rim metal mold |
| JPH06218515A (en) * | 1993-01-25 | 1994-08-09 | Mitsubishi Electric Corp | Structure of metallic mold for casting |
| JPH07112459A (en) * | 1993-10-18 | 1995-05-02 | Jidosha Buhin Eiwa Kyodo Kumiai | Degassing structure of mold for injection molding |
| JPH1158458A (en) * | 1997-08-26 | 1999-03-02 | Canon Inc | Injection mold, device and method for injection molding |
| JPH11254117A (en) * | 1998-03-16 | 1999-09-21 | Toshiba Mach Co Ltd | Device for adjusting degree of vacuum |
| KR20020091667A (en) * | 2001-05-31 | 2002-12-06 | 현대자동차주식회사 | Gas vnet plug structure for pressure diecasting |
| DE60008637T2 (en) * | 1999-07-02 | 2005-02-03 | Bresciani, Edoardo, Sabbia Chiese | Suction valve for removing air and gas from molds during pressure casting |
| CN204052844U (en) * | 2014-08-11 | 2014-12-31 | 浙江拓卡斯机械科技有限公司 | A kind of anti-clogging dustproof aluminum alloying metal casting mould |
| CN205032688U (en) * | 2015-09-16 | 2016-02-17 | 宁波力利模具机械有限公司 | Mould with air bleeding valve |
-
2018
- 2018-07-05 CN CN201810728495.8A patent/CN108941500B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60115662U (en) * | 1984-01-11 | 1985-08-05 | 東芝機械株式会社 | Vacuum shut off valve for die casting machine |
| JPS6234657A (en) * | 1985-08-07 | 1987-02-14 | Toyota Motor Corp | Device for venting gas in metallic mold |
| JPH02209214A (en) * | 1989-02-10 | 1990-08-20 | Teijin Ltd | Venting device of rim metal mold |
| JPH06218515A (en) * | 1993-01-25 | 1994-08-09 | Mitsubishi Electric Corp | Structure of metallic mold for casting |
| JPH07112459A (en) * | 1993-10-18 | 1995-05-02 | Jidosha Buhin Eiwa Kyodo Kumiai | Degassing structure of mold for injection molding |
| JPH1158458A (en) * | 1997-08-26 | 1999-03-02 | Canon Inc | Injection mold, device and method for injection molding |
| JPH11254117A (en) * | 1998-03-16 | 1999-09-21 | Toshiba Mach Co Ltd | Device for adjusting degree of vacuum |
| DE60008637T2 (en) * | 1999-07-02 | 2005-02-03 | Bresciani, Edoardo, Sabbia Chiese | Suction valve for removing air and gas from molds during pressure casting |
| KR20020091667A (en) * | 2001-05-31 | 2002-12-06 | 현대자동차주식회사 | Gas vnet plug structure for pressure diecasting |
| CN204052844U (en) * | 2014-08-11 | 2014-12-31 | 浙江拓卡斯机械科技有限公司 | A kind of anti-clogging dustproof aluminum alloying metal casting mould |
| CN205032688U (en) * | 2015-09-16 | 2016-02-17 | 宁波力利模具机械有限公司 | Mould with air bleeding valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108941500B (en) | 2020-07-14 |
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