CN203751308U - Vacuum die-casting mold for cover plate - Google Patents
Vacuum die-casting mold for cover plate Download PDFInfo
- Publication number
- CN203751308U CN203751308U CN201420106847.3U CN201420106847U CN203751308U CN 203751308 U CN203751308 U CN 203751308U CN 201420106847 U CN201420106847 U CN 201420106847U CN 203751308 U CN203751308 U CN 203751308U
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- Prior art keywords
- vacuum
- die
- cover
- cover plate
- tight
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Abstract
The utility model discloses a vacuum die-casting mold for a cover plate. The vacuum die-casting mold is used for forming the cover plate. The cover plate is applied to a special device, so that the requirements for the flatness of the surface and the forming accuracy of the cover plate are extremely high. If a common die-casting mold is used, due to the fact that air remains in a mold cavity of the common die-casting die, pores are easily formed in the surface of the formed cover plate and the machining requirement of the cover plate cannot be met. Thus, the vacuum die-casting mold is specially designed for the cover plate. A vacuumizing mechanism is arranged outside a die-casting mold of the prior art and comprises a vacuum cover and a pumping device. The surface of the die-casting mold and an air outlet of an air discharging channel are covered with the vacuum cover, a sealing cavity is formed between the vacuum cover and the surface of the die-casting mold, air discharged out of a mold cavity is pumped into the sealing cavity through the pumping device, and the air in the sealing cavity is pumped out through the pumping device connected to the vacuum cover.
Description
Technical field
The utility model relates to a kind of die casting, particularly relates to a kind of vacuum die-casting mould of cover plate.
Background technology
Die casting is a kind of method of casting liquid forging, a kind of technique completing on special die casting die forging machine.Its basic craft course is: the first low speed of molten metal or high-speed casting fill in the die cavity of type progressive die tool, mould has movable cavity surface, it,, along with the cooling procedure pressurization of molten metal is forged, had both eliminated the shrinkage porosity defect of contraction cavity of blank, also made the interior tissue of blank reach the Broken Crystal of forging state.The comprehensive mechanical performance of blank is significantly improved.
Die casting is exactly a kind of mould that is specifically designed to die casting.It is made up of fixed half and moving half conventionally, and cover half is fixed on compression chamber of die casting machine one side's top clamping plate, is the part that molten metal starts to enter compression mod die cavity, is also one of place part of compression mod die cavity.On cover half, there is sprue to be directly connected with nozzle or the pressure chamber of die casting machine.Dynamic model is fixed on the Bottom clamp plate of die casting machine, separates and closes up to left and right mobile with Bottom clamp plate with cover half, generally looses core and establishes therein with foundry goods ejecting mechanism.
In the prior art, in the Patent Prospectus that is 201280022838.X in the patent No., Xindong Industry Co of applicant Japan discloses a kind of die casting, claims and description by this patent can be learnt, this die casting includes fixed half and moving half, dynamic model can approach and separate with respect to cover half, and the composition surface between them forms die cavity together with cover half; Overflow launder, it is formed at least one in fixed half and moving half in the mode being connected with die cavity by overflow cast gate; The gas permeable member of porous, it is located at least one in fixed half and moving half in the mode being connected with overflow launder, and this gas permeable member can not make motlten metal in overflow launder by making gas permeation; And exhaust channel, its one end is connected with the surface of a side contrary to overflow launder of gas permeable member, and its other end is connected with the outside of cover half or the outside of dynamic model.
In the process of die casting, because entering, the inherent liquid metal of die cavity is full of air before, after liquid metal is spurted into die cavity fast, part air can remain in die cavity, cause forming pore in liquid metal, after metal cooled and solidified, these pores or appear at surface of the work and affect flatness, or affect workpiece compactness at inside workpiece, cause product because these defects are defective.
Therefore,, if die cavity can be evacuated, can greatly improve so the quality of formed product.
In the PCT patent application that is 201180069657.8 in the patent No., a kind of vacuum die casting machine is disclosed, this vacuum die casting machine has the mold with two mould half portions, between mould half portion, form mould cavity, it is communicated with casting cavity, and casting cavity can be supplied with the metal melt from holding furnace.In mould cavity, produce negative pressure via vacuum extractor.In addition, be provided with pressure determining device and at least one adjusting device for determining mould cavity pressure, via its adjustable die cavity pressure.
But, vacuum die casting machine in above-mentioned patent, bleeding point is connected directly the exit at die venting path, owing to being difficult to process screw thread on mould, therefore bleeding point can only be plugged on to the position, gas outlet of mould by its general shape, cannot ensure positive confinement, still can be in die cavity more residual air, cause affecting the quality of formed product.In addition, as a rule, die venting path operated by rotary motion is on the die joint of dynamic model and cover half, improve the tightness between bleeding point and exhaust channel outlet, correct step should be existing bleeding point to be placed into out on vent hole again by mould matched moulds, and this is pressed onto bleeding point just likely can cause matched moulds time and causes damage.
Utility model content
Technical problem to be solved in the utility model is that a kind of vacuum die-casting mould that die cavity can be evacuated and can ensure the cover plate of sealing between bleeding point and exhaust channel outlet is provided for the above-mentioned state of the art.
For achieving the above object, the utility model provides following technical scheme:
A kind of vacuum die-casting mould of cover plate, include fixed half and moving half, described dynamic model can separate or close up with respect to described cover half, in the time that described dynamic model and cover half close up, between is formed with die cavity, on described cover half, be formed with successively overflow launder, gas permeable member and exhaust channel, described overflow launder one end is communicated with described die cavity, the other end is connected with described gas permeable member, on described gas permeable member, be provided with pore, described pore one end is communicated with described overflow launder, the other end is communicated with described exhaust channel, described exhaust channel offers gas outlet on described cover half, wherein, in this Vacuum Die Casting Mould, also include vacuum device, described vacuum device comprises air extractor and vacuum (-tight) housing, described vacuum cover cap be located on described gas outlet and and described dynamic model and cover half between be formed with annular seal space, described air extractor is connected on described vacuum (-tight) housing and with described annular seal space and is communicated with.
Adopt the vacuum die-casting mould of this structure,, at fixed half and moving half, a vacuum device is set outward, this mechanism of finding time includes vacuum (-tight) housing, this vacuum cover cap is located at the surface of fixed half and moving half and has formed an annular seal space, thereby sealing chamber is included in the gas outlet of exhaust channel the inside of vacuum (-tight) housing by its sealing.By this vacuum (-tight) housing is set, during due to the outer surface of fixed half and moving half, can accomplish smoothly, therefore vacuum (-tight) housing can be fitted tightly to the surface at fixed half and moving half, and not need directly bleeding point to be inserted, guarantee sealing.
As of the present utility model preferred, described air extractor includes vacuum valve, vacuum tank and vavuum pump, described vacuum valve one end is connected with described vacuum (-tight) housing by pipeline, the other end is connecting vacuum tank by pipeline, described vacuum tank is connecting vavuum pump by vacuum pipe again, on described vavuum pump, is provided with driving mechanism.
Adopt the vacuum die-casting mould of this structure, its air extractor is a complete extract system, and by driving mechanisms control, the air that can find time in a short period of time in die cavity, has improved the operating efficiency of whole operation.
As improvement of the present utility model, between described vacuum valve and described vacuum (-tight) housing, be provided with filter.
A filter is set between vacuum valve and vacuum (-tight) housing, can prevents that dust and the impurity in die cavity, overflow launder, gas permeable member and exhaust channel is inhaled in vacuum valve, vacuum device is polluted.
As further improvement of the utility model, described driving mechanism is motor.
Employing motor is driving mechanism, than cylinder, more powerful, and commercial common cylinder cannot provide enough power drive air extractors to bleed fast, and if adopt hydraulic cylinder as driving mechanism, can produce greasy dirt, pollute working environment.Adopt motor just can avoid two above-mentioned problems as driving mechanism.
As concrete technical scheme of the present utility model, described vacuum (-tight) housing includes cover body and sealing, described sealing abuts on described dynamic model and described cover half, on described cover body, offer through hole, in described through hole, being plugged with tracheae and described tracheae can be by described through hole sealing, described tracheae one end is connected in described through hole, and the other end is connected with described air extractor.
Adopt this structure, in the time of air extractor forvacuum, under the atmospheric effect in the external world, vacuum (-tight) housing can be adsorbed on firmly to the surface of dynamic model and cover half, the feet of vacuum (-tight) housing can be designed to wider width, can increase like this sealing surface between vacuum (-tight) housing and dynamic model and cover half, realize better sealing.
Preferably at least one support bar is installed on described vacuum (-tight) housing as of the present utility model, described support bar one end is connected on described cover body, and the other end is vertically against on described cover half or described dynamic model.
Support bar is installed on vacuum (-tight) housing, and support bar withstands between mould and cover body, can play a supporting role to cover body, prevents that the pressure of external atmosphere pressure is by cover body crimp.
As of the present utility model further preferred, the junction of described support bar and described cover body is provided with Spring pad.
Between the end of support bar and cover body junction, pad is established a Spring pad, is for the further pressure of buffering external atmosphere pressure to cover body, prevents that cover body is extruded distortion.
Compared with prior art, the utility model has the advantage of: at die casting, a vacuum device is set outward, this mechanism of finding time includes vacuum (-tight) housing, this vacuum cover cap is located at the surface of fixed half and moving half and has formed an annular seal space, thereby sealing chamber is included in the gas outlet of exhaust channel the inside of vacuum (-tight) housing by its sealing.By this vacuum (-tight) housing is set, during due to the outer surface of fixed half and moving half, can accomplish smoothly, therefore vacuum (-tight) housing can be fitted tightly to the surface at fixed half and moving half, and not need directly bleeding point to be inserted, guarantee sealing.
Brief description of the drawings
Fig. 1 is the structural representation of the vacuum die-casting mould of the utility model embodiment cover plate;
Fig. 2 is the structural representation of the vacuum device in Fig. 1 embodiment;
Fig. 3 is the structural representation of die casting in Fig. 1 embodiment;
Fig. 4 is the structural representation of the interior gas permeable member of die casting in Fig. 3 embodiment.
Reference numeral:
1, cover half; 1.1, overflow launder; 1.2, gas permeable member; 1.2.1, pore; 1.3, exhaust channel; 1.4, gas outlet; 2, dynamic model; 3, die cavity; 4, vacuum device; 5, air extractor; 5.1, vacuum valve; 5.2, vacuum tank; 5.3, vavuum pump; 5.4, filter; 6, vacuum (-tight) housing; 6.1, cover body; 6.2, sealing; 6.1.1, annular seal space; 6.1.2, through hole; 6.1.3, support bar; 6.1.4, Spring pad; 7, tracheae; 8, pipeline; 9, vacuum pipe; 10, motor; 11, clamping pressure machine.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, vacuum die-casting mould of the present utility model is described in further detail.
As Figure 1-Figure 4, the present embodiment is a kind of vacuum die-casting mould of cover plate, include cover half 1 and dynamic model 2, described dynamic model 2 can extraneous driving mechanism mechanism as the effect of clamping pressure machine 11 under with respect to as described in cover half 1 separate or close up, in the time that described dynamic model and cover half close up, between is formed with die cavity 3, on described cover half, be formed with successively overflow launder 1.1, gas permeable member 1.2 and exhaust channel 1.3, described overflow launder 1.1 one end are communicated with described die cavity 3, the other end is connected with described gas permeable member 1.2, on described gas permeable member, be provided with pore 1.2.1, described pore one end is communicated with described overflow launder 1.1, the other end is communicated with described exhaust channel 1.3, described exhaust channel offers gas outlet 1.4 on described cover half, wherein, in this Vacuum Die Casting Mould, also include vacuum device 4, described vacuum device comprises air extractor 5 and vacuum (-tight) housing 6, described vacuum (-tight) housing is the cover of a pot cover shape, it includes cover body 6.1 and sealing 6.2, described sealing 6.2 circumferentially arranges along the edge of cover body, and its cross section is an annulus, its thickness is that radial distance between annulus inner circle and cylindrical is greatly about 20cm effect, and that face that sealing 6.2 abuts on mould is processed to smooth plane.Described cover body 6.1 is to cover on described gas outlet 1.4, and between cover body and dynamic model and cover half, form an airtight annular seal space 6.1.1, offer a through hole 6.1.2 on the surface of cover body, in through hole 6.1.2, be plugged with a tracheae 7, tracheae 7 is connected on cover body 6.1 by the good pipe joint screw thread of some sealings.This tracheae 7 is connecting above-mentioned air extractor 5.On cover body, be connected with a support bar 6.1.3, described support bar one end is connected on described cover body 6.1, and the other end is vertically against the side of described cover half.This support bar 6.1.3 is withstood between mould and cover body, can play a supporting role to cover body, prevent that the pressure of external atmosphere pressure is by cover body crimp.
As preferably, be provided with Spring pad 6.1.4 in the junction of described support bar and described cover body, this Spring pad can cushion the direct pressure of external atmosphere pressure to cover body 6.1, prevents that cover body 6.1 is extruded distortion.
Described air extractor includes vacuum valve 5.1, vacuum tank 5.2 and vavuum pump 5.3, and these are all commercial assemblies.These vacuum valve 5.1 one end are connected with described vacuum (-tight) housing 6 by pipeline 8, the other end is connecting vacuum tank 5.2 by pipeline 8, described vacuum tank 5.2 is connecting vavuum pump 5.3 by vacuum pipe 9 again, on described vavuum pump 5.3, be provided with motor 10, provide power to drive whole extract system to bleed by this motor.
In order to prevent that some impurity of mould inside are inhaled into air extractor inside with air and pollute, between the vacuum valve 5.1 of air extractor and vacuum (-tight) housing 6, be also provided with a filter 5.4, on filter, be provided with purifier as screen pack (not shown), thereby prevent that dust and impurity in die cavity, overflow launder, gas permeable member and exhaust channel are inhaled in vacuum valve 5.3.
The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. the vacuum die-casting mould of a cover plate, include fixed half and moving half, described dynamic model can separate or close up with respect to described cover half, in the time that described dynamic model and cover half close up, between is formed with die cavity, on described cover half, be formed with successively overflow launder, gas permeable member and exhaust channel, described overflow launder one end is communicated with described die cavity, the other end is connected with described gas permeable member, on described gas permeable member, be provided with pore, described pore one end is communicated with described overflow launder, the other end is communicated with described exhaust channel, described exhaust channel offers gas outlet on described cover half, it is characterized in that: also include vacuum device, described vacuum device comprises air extractor and vacuum (-tight) housing, described vacuum cover cap be located on described gas outlet and and described dynamic model and cover half between be formed with annular seal space, described air extractor is connected on described vacuum (-tight) housing and with described annular seal space and is communicated with.
2. the vacuum die-casting mould of cover plate according to claim 1, it is characterized in that: described air extractor includes vacuum valve, vacuum tank and vavuum pump, described vacuum valve one end is connected with described vacuum (-tight) housing by pipeline, the other end is connecting vacuum tank by pipeline, described vacuum tank is connecting vavuum pump by vacuum pipe again, on described vavuum pump, is provided with driving mechanism.
3. the vacuum die-casting mould of cover plate according to claim 2, is characterized in that: between described vacuum valve and described vacuum (-tight) housing, be provided with filter.
4. the vacuum die-casting mould of cover plate according to claim 3, is characterized in that: described driving mechanism is motor.
5. the vacuum die-casting mould of cover plate according to claim 1, it is characterized in that: described vacuum (-tight) housing includes cover body and sealing, described sealing abuts on described dynamic model and described cover half, on described cover body, offer through hole, in described through hole, being plugged with tracheae and described tracheae can be by described through hole sealing, described tracheae one end is connected in described through hole, and the other end is connected with described air extractor.
6. the vacuum die-casting mould of cover plate according to claim 5, is characterized in that: at least one support bar is installed on described vacuum (-tight) housing, and described support bar one end is connected on described cover body, and the other end is vertically against on described cover half or described dynamic model.
7. the vacuum die-casting mould of cover plate according to claim 6, is characterized in that: the junction of described support bar and described cover body is provided with Spring pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420106847.3U CN203751308U (en) | 2014-03-10 | 2014-03-10 | Vacuum die-casting mold for cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420106847.3U CN203751308U (en) | 2014-03-10 | 2014-03-10 | Vacuum die-casting mold for cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203751308U true CN203751308U (en) | 2014-08-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420106847.3U Expired - Fee Related CN203751308U (en) | 2014-03-10 | 2014-03-10 | Vacuum die-casting mold for cover plate |
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| Country | Link |
|---|---|
| CN (1) | CN203751308U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117249A (en) * | 2016-11-29 | 2018-06-05 | 盟立自动化股份有限公司 | Chamber mechanism for reducing oxygen concentration in mold |
-
2014
- 2014-03-10 CN CN201420106847.3U patent/CN203751308U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117249A (en) * | 2016-11-29 | 2018-06-05 | 盟立自动化股份有限公司 | Chamber mechanism for reducing oxygen concentration in mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20140806 Termination date: 20160310 |