CN204770569U - Totally enclosed hot type vacuum die casting die assembly - Google Patents
Totally enclosed hot type vacuum die casting die assembly Download PDFInfo
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- CN204770569U CN204770569U CN201520407809.6U CN201520407809U CN204770569U CN 204770569 U CN204770569 U CN 204770569U CN 201520407809 U CN201520407809 U CN 201520407809U CN 204770569 U CN204770569 U CN 204770569U
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- mould
- seal box
- sealing
- hole
- type vacuum
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Abstract
The utility model discloses a totally enclosed hot type vacuum die casting die assembly, include the mould of compriseing movable mould and cover half, be equipped with ejecting mechanism, cooling system and the gating system on the mould, be equipped with on the mould rather than the communicating evacuation pore of die cavity, add the seal box outside the mould, the seal box is constituted and makes in the mould is in the airtight space of seal box closing by sealed protecgulum and sealed back lid, is equipped with on the seal box with the communicating aspirating hole in airtight space so that through making after the aspirating hole evacuation during the mould is in vacuum environment, ejecting mechanism, cooling system and the gating system are located outside opening on the mould and all extend to on the seal box and run through. The utility model discloses showing vacuum in the improvement mould cavity, molten metal or the mobility of plastics liquid in mould cavity with higher speed, on die casting machine foundry goods thimble and the movable mould between the centre hole pore wall small space be in the vacuum state, do not have fused metal or plastics liquid in the gas shock mould cavity, oxidation can not take place, improvement product quality.
Description
Technical field
The utility model relates to a kind of vacuum die-casting mould, particularly one hermetically sealed hot type vacuum die-casting mould assembly.
Background technology
Vacuum die casting process is gas by extracting in press casting procedure in die casting die cavity and eliminates or the pore that significantly reduces in die casting and dissolved gas, thus improves the advanced extrusion process of die casting mechanical property and surface quality.
Vacuum die casting process has the following advantages: 1. operation is simple, easy to operate, has the production efficiency about the same with common pressure casting method, is easy to promote in actual production; 2. can eliminate or reduce the pore of inside die-casting part, improve mechanical performance and the surface quality of die casting, improve plating performance; 3. greatly reduce the counter-pressure of die cavity, lower specific pressure and the poor alloy of casting character can be used, likely use foundry goods that small machine die casting is larger etc.
Although vacuum die casting process has above plurality of advantages, in use also there is following defect in it:
(1), after vacuumizing operation to mold cavity, because the gas in mould is discharged not exclusively, vacuum does not reach requirement, makes metal or the poor fluidity of plastic liquid in mold cavity of melting, causes the mass defects such as metal casting shrinkage cavity.
(2) the slight void between die casting machine foundry goods thimble and dynamic model communicates with the external world, and the metal of melting in outer gas stream meeting Impact mould die cavity or plastic liquid, oxidation occurs, thus affects product quality.
(3), after vacuumizing operation to mold cavity, remaining gas constantly overflows, and causes molten metal to overflow, causes the off quality of metal casting.
(4) the mould that sealing is good, after evacuation, mold cavity can keep higher vacuum, but, the sealing of mould is directly related with its material, requires high to its material, and, mold sealing structure is complicated, and manufacture and install more difficult, thus cost is higher.
(5) mold cavity arranges vacuum-pumping tube, metal liquid or the plastic liquid of melting easily block vacuum-pumping tube, when reusing, need to clear up it, use very inconvenient.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, cost is low, can improve the hermetically sealed hot type vacuum die-casting mould assembly of casting quality.
The purpose of this utility model realizes by the following technical solutions: a kind of hermetically sealed hot type vacuum die-casting mould assembly, comprise the mould be made up of dynamic model and cover half, described mould is provided with ejecting mechanism, cooling system and running gate system, mould is also provided with communicate with its die cavity vacuumize duct, it is characterized in that: outside described mould, set up seal box, described seal box is by sealing protecgulum and involutory formation of rear sealing cover and making mould be in the confined space of seal box, described seal box is provided with the aspirating hole communicated with confined space to make mould be in vacuum environment after being vacuumized by aspirating hole, described ejecting mechanism, cooling system and the running gate system outside port be positioned on mould all to extend on seal box and runs through.
The utility model is in common die casting, the outer setting seal box of injection mold forms die assembly, when vacuumizing, because the space between seal box and mould is vacuum space, not only can significantly improve the vacuum in mold cavity, vacuum pressure is made to be reduced to below 2000 handkerchiefs, thus accelerate metal or the mobility of plastic liquid in mold cavity of melting, and, slight void in ejecting mechanism on die casting machine foundry goods thimble and dynamic model between centre hole hole wall is also in vacuum state, therefore, there is no metal or the plastic liquid of melting in gas shock mold cavity, thus oxidation can not be there is, thus improve the quality of product.
Improve as one of the present utility model, described vacuumize in duct be provided with allow air by and the micro-mesh that fused solution flows out can be intercepted, described micro-mesh arranges near die cavity and blocks and vacuumize duct.Micro-mesh can prevent the metal liquid of melting or plastic liquid blocking from vacuumizing duct effectively, easy to use.
As a kind of embodiment of the present utility model, on described micro-mesh, the aperture of micropore is 80 ~ 120 orders.
As further improvement of the utility model, described running gate system comprises the charging aperture be arranged on cover half, is provided with the sealing-plug for shutoff charging aperture in described charging aperture, and the heat-fusible materials that described sealing-plug employing becomes gaseous volatilization through high-temperature heating is made.Sealing-plug shutoff charging aperture, to vacuumize operation to carry out in confined space, afterwards, metal or the plastic liquid of high temperature fused state inject from charging aperture, the sealing-plug of heat-fusible materials is melt into gaseous volatilization rapidly when the metal or plastic contacts with high temperature fused state, and the metal of liquid state or plastics enter casting the mold cavity of ultra-high vacuum state from charging aperture.
The utility model can also do following improvement, the involutory surface of one of described sealing protecgulum and rear sealing cover two lids is provided with lead or fairlead, on the involutory surface of another lid, correspondence is provided with fairlead or lead, and described lead inserts in fairlead to realize the accurately involutory of sealing protecgulum and rear sealing cover.
The outside port of the ejecting mechanism that the utility model is positioned on seal box ejects hole, described ejecting mechanism comprises and is arranged on push-rod hole on dynamic model and ejects rod, the described hole that ejects is positioned on the rear end of described rear sealing cover, described push-rod hole and eject hole and be docked and connected, the described front portion ejecting rod is arranged in push-rod hole, the rear portion ejecting rod is then arranged in and ejects hole, described in eject between the rear portion of rod and the hole wall ejecting hole and do encapsulation process.
Cooling system described in the utility model comprises the cooling water circulation groove be separately positioned on fixed half and moving half, run through the external cooling water source of sealing protecgulum after the cooling water circulation groove be positioned on cover half becomes tubulose to stretch out, and the cooling water circulation groove be positioned on dynamic model runs through the external cooling water source of rear sealing cover after becoming tubulose to stretch out.
As a kind of preferred embodiment of the present utility model, between the sidewall of described seal box and the side of mould, there is space, the outside port being positioned at the running gate system on seal box is sprue, the front inner wall of described seal box contacts with the front end outer wall of cover half and sprue and charging aperture is docked and connected, and the contact surface of the two is positioned at the outer of sprue and is arranged with sealing ring.
The involutory surface of sealing protecgulum described in the utility model and rear sealing cover is provided with hermetically-sealed construction.
As a kind of preferred embodiment of the present utility model, described hermetically-sealed construction comprises annular groove, ring rib and sealing ring, described annular groove or ring rib are positioned on the involutory surface of sealing one of protecgulum and rear sealing cover two lids, on the involutory surface of another lid, correspondence is provided with ring rib or annular groove, described ring rib is fastened in annular groove, described sealing ring is multiple, is separately positioned between ring rib and annular groove and on the sealing protecgulum of annular groove inner side and outer side and the involutory surface of rear sealing cover.
Compared with prior art, the utility model has following significant effect:
(1) the utility model is the outer setting seal box at common die casting, injection mold, when vacuumizing, space between seal box and mould is vacuum space, the vacuum in mold cavity can be significantly improved, vacuum pressure is made to be reduced to below 2000 handkerchiefs, thus accelerate metal or the mobility of plastic liquid in mold cavity of melting, improve the quality of products.
(2) the slight void in ejecting mechanism on die casting machine foundry goods thimble and dynamic model between centre hole hole wall is also in vacuum state, therefore, there is no metal or the plastic liquid of melting in gas shock mold cavity, thus oxidation can not occur, thus improve the quality of product.
(3) after vacuumizing operation, be ultravacuum environment in seal box, substantially there is not remaining gas, therefore, there is no molten metal spillover, ensure product quality.
(4), without the need to adopting material to require mould that is high and good airproof performance, after evacuation, mold cavity can keep higher vacuum to the utility model, manufactures and installs easily, considerably reduce cost.
(5) micro-mesh can prevent metal liquid or the plastic liquid blocking vacuum pipe of melting effectively, easy to use.
(6) the heat-fusible materials that namely sealing-plug employing evaporates into gas through high-temperature heating is made, and make for confined space in seal box, and when charging, sealing-plug heat evaporates into gas not hinder the requirement of normal casting manipulations to meet when vacuumizing.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, it is a kind of hermetically sealed hot type vacuum die-casting mould assembly of the utility model, comprise the mould be made up of dynamic model 17 and cover half 18, mould is provided with ejecting mechanism, cooling system and running gate system, mould is also provided with communicate with its die cavity 4 vacuumize duct, seal box 1 is set up outside mould, seal box 1 makes mould be in the confined space of seal box 1 by sealing protecgulum 11 and involutory formation of rear sealing cover 12, seal box 1 is provided with the aspirating hole 2 vacuumized that communicates with confined space to make mould be in vacuum environment after being vacuumized by aspirating hole, aspirating hole 2 is near vacuumizing duct, ejecting mechanism, cooling system and the running gate system outside port be positioned on mould all to extend on seal box 1 and runs through.Because the space between seal box 1 and mould is vacuum space, not only can significantly improve the vacuum in mould 1 die cavity 4, and the slight void in ejecting mechanism on die casting machine foundry goods thimble 20 and dynamic model 17 between centre hole hole wall is also in vacuum state.
Vacuumize in duct be provided with allow air by and can intercept fused solution flow out micro-mesh 31, on micro-mesh 31, the aperture of micropore is 80 ~ 120 orders, and micro-mesh 31 arranges near die cavity 4 and blocks and vacuumizes duct.Micro-mesh can effectively prevent the metal liquid of melting or plastic liquid blocking from vacuumizing duct, ensures that the air in die cavity is discharged by micro-mesh simultaneously.
Running gate system comprises the charging aperture 5 be arranged on cover half, is provided with the sealing-plug 6 for shutoff charging aperture in charging aperture 5, and sealing-plug 6 adopts the heat-fusible materials becoming gaseous volatilization through high-temperature heating to make.Cover before sealing 11 and the involutory surface of one of two lids of rear sealing cover 12 be provided with lead or fairlead (not shown in FIG.), in the present embodiment, lead is arranged on the involutory surface of rear sealing cover 12, and fairlead is arranged on the involutory surface of sealing protecgulum 11, lead inserts in fairlead to realize the accurately involutory of sealing protecgulum 11 and rear sealing cover 12.
The outside port being positioned at the ejecting mechanism on seal box 1 ejects hole, ejecting mechanism comprises and is arranged on push-rod hole on dynamic model and ejects rod 7, ejecting hole is positioned on the rear end of rear sealing cover 12, push-rod hole and eject hole and be docked and connected, the front portion ejecting rod 7 is arranged in push-rod hole, the rear portion ejecting rod 7 is then arranged in and ejects hole, eject between the rear portion of rod and the hole wall ejecting hole and do encapsulation process, specifically: on the hole wall ejecting hole, offer cannelure, in cannelure, sealing ring is installed, ejects rod and sealing ring close contact.
Cooling system comprises the cooling water circulation groove be separately positioned on fixed half and moving half, run through the external cooling water source of sealing protecgulum 11 after the cooling water circulation groove 8 one-tenth tubuloses be positioned on cover half stretch out, and the cooling water circulation groove 9 one-tenth tubuloses be positioned on dynamic model run through the external cooling water source of rear sealing cover 12 after stretching out.There is between the sidewall of seal box 1 and the side of mould space 13, the outside port being positioned at the running gate system on seal box 1 is sprue 14, the front inner wall of seal box 1 contacts with the front end outer wall of dynamic model and sprue 14 and charging aperture 5 is docked and connected, and the contact surface of the two is positioned at the outer of sprue 14 and is arranged with sealing ring 16.
The involutory surface of sealing protecgulum 11 and rear sealing cover 12 is provided with hermetically-sealed construction.In the present embodiment, hermetically-sealed construction comprises annular groove, ring rib and sealing ring 15, annular groove or ring rib are positioned on the involutory surface of sealing one of protecgulum 11 and rear sealing cover 12 two lids, in the present embodiment, annular groove is positioned on rear sealing cover 12, ring rib is then positioned on sealing protecgulum 11, ring rib is fastened in annular groove, sealing ring is 3, one of them is arranged between ring rib and annular groove, on two other sealing protecgulum 11 being located at annular groove inner side and outer side and rear sealing cover 12 involutory surface.
The course of work of the present utility model is as follows: after sealing protecgulum and rear sealing cover close, start the air that vacuum extractor is found time in seal box and mold cavity, after the pressure of seal box and mould type chamber air is less than the state of 2000 handkerchiefs, close the valve of vacuum extractor, the liquid metal of high-temperature fusion or plastic liquid flow into from charging aperture and first break through sealing-plug, moment of the liquid comes into contact of sealing-plug and high temperature fused state rapidly melting volatilize, the liquid metal of high-temperature fusion or plastics flow in the mold cavity of ultra-high vacuum state smoothly, flowing is accelerated in the mold cavity of ultrahigh vacuum, be full of rapidly die cavity and cast workpiece, when the metal of high-temperature fusion or plastic liquid connect dissatisfied to mold cavity vacuumize duct time, intercepted by micro-mesh, can prevent the metal liquid of melting or plastic liquid blocking from vacuumizing duct.
Embodiment of the present utility model is not limited thereto; according to foregoing of the present utility model; according to ordinary technical knowledge and the customary means of this area; do not departing under the utility model above-mentioned basic fundamental thought prerequisite; the utility model can also make the amendment of other various ways, replacement or change, all drops within the utility model rights protection scope.
Claims (10)
1. a hermetically sealed hot type vacuum die-casting mould assembly, comprise the mould be made up of dynamic model and cover half, described mould is provided with ejecting mechanism, cooling system and running gate system, mould is also provided with communicate with its die cavity vacuumize duct, it is characterized in that: outside described mould, set up seal box, described seal box, by sealing protecgulum and involutory formation of rear sealing cover and making mould be in the confined space of seal box, described seal box is provided with the aspirating hole communicated with confined space to make mould be in vacuum environment after being vacuumized by aspirating hole; Described ejecting mechanism, cooling system and the running gate system outside port be positioned on mould all to extend on seal box and runs through.
2. hermetically sealed hot type vacuum die-casting mould assembly according to claim 1, it is characterized in that: described vacuumize in duct be provided with allow air by and the micro-mesh that fused solution flows out can be intercepted, described micro-mesh arranges near die cavity and blocks and vacuumize duct.
3. hermetically sealed hot type vacuum die-casting mould assembly according to claim 2, is characterized in that: on described micro-mesh, the aperture of micropore is 80 ~ 120 orders.
4. the hermetically sealed hot type vacuum die-casting mould assembly according to any one of claims 1 to 3, it is characterized in that: described running gate system comprises the charging aperture be arranged on cover half, be provided with the sealing-plug for shutoff charging aperture in described charging aperture, the heat-fusible materials that described sealing-plug employing becomes gaseous volatilization through high-temperature heating is made.
5. hermetically sealed hot type vacuum die-casting mould assembly according to claim 4, it is characterized in that: on the involutory surface of one of described sealing protecgulum and rear sealing cover two lids, be provided with lead or fairlead, on the involutory surface of another lid, correspondence is provided with fairlead or lead, and described lead inserts in fairlead to realize the accurately involutory of sealing protecgulum and rear sealing cover.
6. hermetically sealed hot type vacuum die-casting mould assembly according to claim 5, it is characterized in that: the outside port being positioned at the ejecting mechanism on seal box ejects hole, described ejecting mechanism comprises and is arranged on push-rod hole on dynamic model and ejects rod, the described hole that ejects is positioned on the rear end of described rear sealing cover, described push-rod hole and eject hole and be docked and connected, the described front portion ejecting rod is arranged in push-rod hole, the rear portion ejecting rod is then arranged in and ejects hole, described in eject between the rear portion of rod and the hole wall ejecting hole and do encapsulation process.
7. hermetically sealed hot type vacuum die-casting mould assembly according to claim 6, it is characterized in that: described cooling system comprises the cooling water circulation groove be separately positioned on fixed half and moving half, run through the external cooling water source of sealing protecgulum after the cooling water circulation groove be positioned on cover half becomes tubulose to stretch out, and the cooling water circulation groove be positioned on dynamic model runs through the external cooling water source of rear sealing cover after becoming tubulose to stretch out.
8. hermetically sealed hot type vacuum die-casting mould assembly according to claim 7, it is characterized in that: between the sidewall of described seal box and the side of mould, there is space, the outside port being positioned at the running gate system on seal box is sprue, the front inner wall of described seal box contacts with the front end outer wall of cover half and sprue and charging aperture is docked and connected, and the contact surface of the two is positioned at the outer of sprue and is arranged with sealing ring.
9. hermetically sealed hot type vacuum die-casting mould assembly according to claim 8, is characterized in that: the involutory surface of described sealing protecgulum and rear sealing cover is provided with hermetically-sealed construction.
10. hermetically sealed hot type vacuum die-casting mould assembly according to claim 9, it is characterized in that: described hermetically-sealed construction comprises annular groove, ring rib and sealing ring, described annular groove or ring rib are positioned on the involutory surface of sealing one of protecgulum and rear sealing cover two lids, on the involutory surface of another lid, correspondence is provided with ring rib or annular groove, described ring rib is fastened in annular groove, described sealing ring is multiple, be separately positioned between ring rib and annular groove, and on the sealing protecgulum of annular groove inner side and outer side and rear sealing cover involutory surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520407809.6U CN204770569U (en) | 2015-06-15 | 2015-06-15 | Totally enclosed hot type vacuum die casting die assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520407809.6U CN204770569U (en) | 2015-06-15 | 2015-06-15 | Totally enclosed hot type vacuum die casting die assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204770569U true CN204770569U (en) | 2015-11-18 |
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ID=54510695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520407809.6U Expired - Fee Related CN204770569U (en) | 2015-06-15 | 2015-06-15 | Totally enclosed hot type vacuum die casting die assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204770569U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985156A (en) * | 2015-06-15 | 2015-10-21 | 广州城建职业学院 | Full sealing thermal type vacuum die-casting die assembly |
| CN106738620A (en) * | 2016-12-30 | 2017-05-31 | 厦门市通达创智实业有限公司 | A kind of method and mould for producing super thick chopping board |
-
2015
- 2015-06-15 CN CN201520407809.6U patent/CN204770569U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985156A (en) * | 2015-06-15 | 2015-10-21 | 广州城建职业学院 | Full sealing thermal type vacuum die-casting die assembly |
| CN106738620A (en) * | 2016-12-30 | 2017-05-31 | 厦门市通达创智实业有限公司 | A kind of method and mould for producing super thick chopping board |
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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: 20151118 Termination date: 20180615 |