CN216966235U - Vacuum die-casting forming device - Google Patents
Vacuum die-casting forming device Download PDFInfo
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- CN216966235U CN216966235U CN202120670078.XU CN202120670078U CN216966235U CN 216966235 U CN216966235 U CN 216966235U CN 202120670078 U CN202120670078 U CN 202120670078U CN 216966235 U CN216966235 U CN 216966235U
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- 238000004512 die casting Methods 0.000 title claims abstract description 41
- 238000002347 injection Methods 0.000 claims abstract description 35
- 239000007924 injection Substances 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000006698 induction Effects 0.000 claims abstract description 11
- 238000005086 pumping Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
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- 229910000808 amorphous metal alloy Inorganic materials 0.000 abstract description 14
- 238000005266 casting Methods 0.000 abstract description 13
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- 230000008018 melting Effects 0.000 description 4
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Abstract
The utility model discloses a vacuum die-casting forming device, comprising: the die forming mechanism comprises a movable die insert connected with the movable die plate and a fixed die insert connected with the fixed die plate; the die closing mechanism is used for driving the movable die plate to move horizontally so that the movable die insert and the fixed die insert are closed to form a die cavity; a smelt-shot system comprising: the two ends of the vertical charging barrel are opened, the vertical charging barrel is fixed below a parting surface formed by closing the movable die insert and the fixed die insert, and the upper end of the vertical charging barrel is communicated with the die cavity; the injection punch is vertically inserted into the vertical charging barrel; and the induction coil surrounds the periphery of the vertical charging barrel. The utility model improves the vacuum pumping efficiency of the existing horizontal amorphous alloy vacuum die casting machine, reduces the casting stroke, reduces the impurity content of the melt, improves the real solidification pressure of the casting and improves the compactness. The utility model also overcomes the defect of the exhaust capacity of the existing vertical vacuum die casting machine, reduces the occurrence of turbulence and entrainment in the casting and improves the amorphous forming capacity and the mechanical property of the casting.
Description
Technical Field
The utility model relates to the technical field of novel die casting, in particular to a vacuum die-casting forming device.
Background
The amorphous alloy is a novel metal material without crystal grains and crystal boundaries, which is obtained by disorderly arranging and crystallizing atoms of a metal melt in the process of super-quenching solidification and is also called as metal glass or liquid metal. Due to the disordered atomic structure, the amorphous alloy generally has high strength, high hardness, high surface smoothness, excellent corrosion resistance and the like, is considered to be one of the revolutionary new materials with application prospects in the 21 st century, and has wide application prospects in the fields of military aerospace, consumer electronics, sports equipment, biomedical science and the like. Research has shown that amorphous alloys have market capacities in the consumer electronics field only, which exceed the billion element level. At present, the preparation methods of the amorphous alloy mainly comprise suction casting, water quenching, 3D printing and the like, but the methods are difficult to realize the batch preparation of parts with complex structures and cannot meet the requirements of industrial production. The die casting process is a process for quickly injecting molten metal into a die cavity and solidifying the molten metal under high pressure, has the characteristics of high cooling rate, near net shape and the like, and is widely applied to the forming of traditional aluminum and magnesium alloy parts with complex structures. In recent years, through improvement of traditional die casting equipment, the die casting process successfully realizes the forming and application of large-size amorphous alloy parts with complex structures, and the die casting process is highly concerned by academia and industry.
At present, the die-casting forming equipment for amorphous alloy mainly has two forms. One is a horizontal vacuum die casting machine disclosed in patent nos. US6805758B2, CN201110421420.3, CN201510118673.1, CN201320785547.8, and CN 201320783965.3. This type of vacuum die casting machine is on the basis of the horizontal die casting machine of traditional standard, utilizes the response to melt the cup and replaces the soup ladle and carry out the alloy and smelt the feed to will smelt and press the system seal of penetrating in a closed environment, realize a full flow vacuum casting's equipment. The die casting machine is characterized in that the horizontal liquid feeding and the horizontal die closing are the largest in structural layout. However, this type of die casting device still has technical shortcomings: (1) when molten metal liquid enters the vertical die cavity from the horizontal charging barrel, turbulence and entrainment are easy to occur near the inner sprue; (2) because the flow direction of the molten metal liquid is changed from horizontal to vertical, the stamping stress of the horizontal injection plunger is difficult to be completely transferred into the casting; (3) because the molten metal liquid can flow into the vertical die cavity only after flowing stably after entering the horizontal charging barrel from the melt inlet, the horizontal charging barrel cannot be too short, and the distance for the molten metal liquid to flow in the horizontal charging barrel is long, so that the molten metal liquid is easy to pollute.
Another amorphous alloy die-casting equipment is a vertical injection-vertical matched die vacuum die-casting machine as disclosed in patent No. CN 201310714994.9. The die casting machine is characterized in that the vertical injection feeding and the vertical die assembly are adopted in the structural layout. However, the vertical amorphous alloy die casting machine has the same disadvantages that the metal liquid level direction is not perpendicular to the moving direction, so that the vertical die closing mode is not beneficial to exhaust after the melt enters the die cavity, and instability of fluid filling dynamics is easy to occur in the casting. The introduction of entrainment, turbulence, impurities and the like can cause the instability of the supercooled liquid of the amorphous alloy, induce crystallization, reduce the amorphous forming capability and reduce the performance of products.
With the progress of amorphous alloy industrialization and the expansion of market demands, the complexity and the forming difficulty of products are gradually increased, and the die-casting forming equipment which has higher vacuum-pumping efficiency, can effectively reduce turbulent air entrainment and improve the compactness and the amorphous forming capability of the products is of great significance for promoting the large-scale industrial application of amorphous alloys.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides a horizontal die-closing-vertical injection vacuum die-casting device, which is designed to overcome the shortcomings of the prior art, so as to achieve high-efficiency and low-oxygen alloy melting, improve the dynamic instability of the die-casting filling process, reduce turbulence, entrainment and impurity content, and improve the compactness, amorphous forming ability and mechanical properties of the product. Moreover, the method can be used for preparing the amorphous alloy, and can also be used for realizing the molding of metal materials which are easy to oxidize or difficult to oxidize, such as copper alloy, titanium alloy, high-entropy alloy and the like.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a vacuum die-casting molding apparatus comprising:
the die forming mechanism comprises a movable die insert connected with the movable die plate and a fixed die insert connected with the fixed die plate;
the die assembly mechanism is used for driving the movable die plate to horizontally move so that the movable die insert and the fixed die insert are closed to form a die cavity;
a smelt-shot system comprising:
the two ends of the vertical charging barrel are provided with openings and are fixed below a parting surface formed by closing the movable die insert and the fixed die insert, and the upper end of the vertical charging barrel is communicated with the die cavity;
the injection punch is vertically inserted into the vertical material barrel;
and the induction coil surrounds the periphery of the vertical charging barrel.
Optionally, the clamping mechanism comprises:
the guide columns penetrate through the movable template from four corners of the movable template, one ends of the guide columns are connected with the fixed template, and the other ends of the guide columns penetrate through the tail plate;
the mould closing cylinder comprises a cylinder body and an expansion link, the expansion link is connected with the tail plate,
the movable template is in driving connection with the tail plate, so that the movable template is driven to move through a telescopic rod of the die closing cylinder.
Optionally, the lower end of the shot punch is connected to a telescoping shot rod of a vertical shot sleeve.
Optionally, the induction coil is disposed at the constriction of the cartridge.
Optionally, an ejection mechanism is further provided, and the ejection mechanism includes an ejection cylinder, and a telescopic rod of the ejection cylinder penetrates through the movable die plate and the movable die insert.
Optionally, a pressurized accumulator is also included, the pressurized accumulator being in communication with the rodless cavity of the shot sleeve.
Optionally, the shot punch is machined from tungsten, molybdenum, titanium alloy, or a ceramic material.
Optionally, the mold further comprises a vacuum system for evacuating the mold cavity.
Optionally, an ejection mechanism is further provided, and the ejection mechanism includes a fixed member and a top rod extending from the fixed member through the movable die plate and the movable die insert.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
(1) compared with an amorphous alloy horizontal vacuum die casting machine, the utility model can avoid unstable fluid dynamics when molten metal liquid enters the horizontal charging barrel from a sprue through a horizontal die assembly-vertical injection molding method, and can also reduce unstable fluid dynamics near an inner sprue when the molten metal liquid enters the vertical die cavity from the horizontal charging barrel, thereby reducing turbulence and air entrainment;
(2) Because the die cavity of the horizontal die assembly is vertical and the injection direction of the vertical injection is vertical, the transmission of pressure to a casting in the solidification process can be facilitated, the compactness of a product is improved, and the porosity is reduced;
(3) the charging barrel is directly arranged as the smelting chamber, so that the volume of the smelting chamber can be greatly reduced, the vacuumizing efficiency is improved, the pouring stroke is reduced, and the heat flow loss and the melt pollution in the injection process are reduced.
(4) Compared with an amorphous alloy vertical vacuum die casting machine, the device has the advantages that turbulence and gas entrainment are reduced, so that molten metal liquid can be filled in the vertical die cavity more stably, the exhaust is facilitated, and the amorphous forming capability and the mechanical property are improved.
Drawings
The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic structural diagram of a horizontal die assembly-vertical injection amorphous alloy die casting machine;
FIG. 2 is a partial schematic structural view of the melt-shot system and die forming structure;
1. a base; 2. a melting-injection system; 3. a mold forming mechanism; 4. a vacuum pumping system; 5. fixing a template; 6, moving the template; 7. a guide post; 8. a mold clamping cylinder; 9. a tail plate; 10. a movable die insert; 11. a fixed die insert; 12. a top rod; a top plate; 14. a base plate; 15. a support plate; 16. a mold cavity; 17. an injection cylinder; 18. an injection rod; 19. injecting a punch; 20. a vertical charging barrel; 21. a boost accumulator; 22. shrinking the neck part; 23. an induction coil; 24. a metal raw material.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive on the scope of the claims. Furthermore, in the present description, the drawings are not drawn to scale and like reference numerals designate like parts.
The utility model is described in detail below with reference to the drawings and the detailed description. As shown in fig. 1 and 2, the vacuum die-casting molding apparatus includes a base 1, a melting-injection system 2, a mold clamping mechanism, a mold molding mechanism 3, and a vacuum pumping system 4. The base 1 is in a horizontal structure layout, and the die clamping mechanism comprises a fixed die plate 5, a movable die plate 6, a guide pillar 7, a die clamping cylinder 8 and a tail plate 9 and is used for installing, opening, closing and locking a die and ejecting a casting. The fixed die plate 5 and the movable die plate 6 with vertical surfaces are installed on the base 1, guide pillars 7 are respectively penetrated through four corners of the movable die plate 6, each guide pillar 7 is horizontally arranged, one end of each guide pillar 7 is connected with the fixed die plate 5, the other end of each guide pillar penetrates through the tail plate 9, a telescopic rod of the die closing cylinder 8 is connected with the tail plate 9, and the tail plate 9 is in driving connection with the movable die plate 6, for example, is connected through a toggle rod mechanism. The movable die plate 6 is driven to move towards or away from the fixed die plate 7 along the guide post 7 by the expansion and contraction of the expansion rod of the clamping cylinder 8.
The die forming mechanism 3 is arranged between the fixed die plate 5 and the movable die plate 6, and comprises a movable die insert 10 connected with the movable die plate 6 and a fixed die insert 11 connected with the fixed die plate, wherein the movable die insert 10 and the fixed die insert 11 form a die cavity 16 after being closed.
A smelting-injection system 2 is vertically arranged below the parting surfaces of a movable die insert 10 and a fixed die insert 11 of the die forming mechanism 3, and the central line of the vertical charging barrel is arranged in the parting surface of the die forming mechanism. The melting-injection system 2 comprises an injection cylinder 17, an injection rod 18, an injection punch 19, a vertical barrel 20, a pressurized energy accumulator 21 and an induction coil 23. The upper end of the injection rod 18 is connected with an injection punch 19, the lower end of the injection rod is inserted into the injection cylinder 17, and the injection punch 19 is inserted into the vertical cylinder 20 and is in sliding seal with the vertical cylinder. The lower section of the vertical charging barrel is provided with a necking part 22, a heat induction coil 23 is arranged on the outer side of the necking part 22 and is connected with a power supply, and the power supply regulates and controls the melting temperature by controlling parameters such as current, voltage and the like. The accumulator 21 is connected to the shot sleeve 17, and more specifically, is in communication with the rodless cavity of the shot sleeve 17 to provide energy for the movement of the shot sleeve.
Further, the vacuum-pumping system 4 is further provided and comprises a vacuum pump, a vacuum pipeline and a control valve on the vacuum pipeline, the vacuum-pumping system 4 is connected with the mold forming mechanism 3, specifically, is communicated with the mold cavity 16 and is used for vacuumizing the mold cavity 16, and the whole process from smelting to forming is realized.
Further, an ejection mechanism is further provided, which may be hydraulic, and includes an ejection cylinder 31, and an expansion rod of the ejection cylinder 314 passes through the movable die plate 6 and the movable die insert 10. Specifically, as shown in fig. 2, the movable die plate 6 may be inserted through the ejector holes 32 and abut against one side of the shim plate 14, the shim plate 14 is connected to the ejector rods 12, and the top plate 13 is connected to the movable die plate 6 through the support plate 15. The ejector rod 12 penetrates through the top plate 13 and the movable die insert 10 embedded on the top plate 13. The top plate 13 and the movable die insert 10 move along with the movement of the movable die plate 6, and the ejector rod 12 ejects the casting when the movable die plate leaves the fixed die plate 5 leftwards, so that the ejection force can be adjusted through the ejector cylinder 31.
Alternatively, the ejection mechanism may be mechanical, and includes a fixed member and a ram 12 extending from the fixed member through the movable die plate 6 and the movable die insert 10.
The injection punch head can realize melting of metal raw materials but avoid overheating and failure of the punch head through material selection and temperature control. For example, the shot punch may be machined from tungsten, molybdenum, titanium alloy, or a ceramic material.
The following describes the specific operation of the vacuum die-casting device: the clamping cylinder 8 drives the movable mould plate 6 to move leftwards along the four guide posts 7 and separate from the fixed mould plate 5. The shot rod 18 pushes the shot punch 19 up to the lower end of the necked portion 22 of the vertical barrel 20 in which the induction coil 23 is mounted. Next, the metal raw material 24 is put into the vertical barrel 20, placed at the upper surface of the injection punch 19; the mold clamping cylinder 8 drives the movable mold plate 6 to be clamped with the fixed mold 5 along the four guide posts 7, so that the movable mold insert 10 and the fixed mold insert 11 form a mold cavity 16 after being closed, and the mold forming mechanism 3 is locked, wherein the locking can be realized by utilizing a toggle rod mechanism 30 connected between the tail plate and the movable mold plate, and the specific structure of the toggle rod mechanism is not detailed here.
The vacuum system 4 is then activated to evacuate the mold cavity 16 and the vertical barrel of the smelt-shot system 2 in communication therewith. When the vacuum degree reaches a set value, starting the induction coil 23, and rapidly heating the metal block material 24 in the vertical charging barrel 20 to raise the temperature so as to smelt the metal block material into molten metal; when the temperature of the molten metal reaches a predetermined value, the injection plunger 18 drives the injection punch 19 upward to push the molten metal into the die cavity 16, thereby performing die-casting and applying a continuous pressure to the cast product. When the casting is cooled to be below a set temperature range, air is conveyed into the die cavity from an air suction opening on the die cavity 16 to release pressure, then the die clamping cylinder 8 drives the movable die plate 6 to move leftwards and separate from the fixed die plate 5, and the casting is ejected out by the push plate 13 through the push rod 12; further, the injection plunger 18 drives the injection plunger 19 to move downward to the lower end of the constricted portion 22 provided with the induction coil 23, and the next vacuum melting die-casting cycle is performed after the metal material 24 is put.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A vacuum die-casting molding apparatus, comprising:
the die forming mechanism comprises a movable die insert connected with the movable die plate and a fixed die insert connected with the fixed die plate;
the die assembly mechanism is used for driving the movable die plate to horizontally move so that the movable die insert and the fixed die insert are closed to form a die cavity;
a smelt-shot system comprising:
the two ends of the vertical charging barrel are opened, the vertical charging barrel is fixed below a parting surface formed by closing the movable die insert and the fixed die insert, and the upper end of the vertical charging barrel is communicated with the die cavity;
the injection punch is vertically inserted into the vertical material barrel;
and the induction coil surrounds the periphery of the vertical charging barrel.
2. The vacuum die-casting molding apparatus according to claim 1,
the clamping mechanism comprises:
the guide columns penetrate through the movable template from four corners of the movable template, one ends of the guide columns are connected with the fixed template, and the other ends of the guide columns penetrate through the tail plate;
the die-closing cylinder comprises a cylinder body and an expansion link, the expansion link is connected with the tail plate,
the movable template is in driving connection with the tail plate, so that the movable template is driven to move through a telescopic rod of the die closing cylinder.
3. The vacuum die-casting molding apparatus according to claim 1,
the lower end of the injection punch head is connected with a telescopic injection rod of the vertical injection cylinder.
4. The vacuum die-casting molding apparatus according to claim 1,
the induction coil is arranged at the necking position of the vertical charging barrel.
5. The vacuum die-casting molding apparatus according to claim 1,
the ejection mechanism comprises an ejection cylinder, and a telescopic rod of the ejection cylinder penetrates through the movable template and the movable mold insert.
6. The vacuum die-casting molding apparatus according to claim 3,
the injection cylinder is characterized by further comprising a pressurized energy accumulator, and the pressurized energy accumulator is communicated with the rodless cavity of the injection cylinder.
7. The vacuum die casting apparatus of claim 1 wherein said shot punch is machined from tungsten, molybdenum, titanium alloy or a ceramic material.
8. The vacuum die-casting apparatus according to claim 1, further comprising a vacuum-pumping system that evacuates the mold cavity.
9. The vacuum die-casting molding apparatus according to claim 1,
The ejection mechanism comprises a fixed piece and an ejector rod extending from the fixed piece through the movable die plate and the movable die insert.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120670078.XU CN216966235U (en) | 2021-04-01 | 2021-04-01 | Vacuum die-casting forming device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120670078.XU CN216966235U (en) | 2021-04-01 | 2021-04-01 | Vacuum die-casting forming device |
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| CN216966235U true CN216966235U (en) | 2022-07-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118218559A (en) * | 2024-04-11 | 2024-06-21 | 苏州瑞泰克散热科技有限公司 | Cold water plate die casting device and method for new energy vehicles |
| CN120286674A (en) * | 2025-06-12 | 2025-07-11 | 山西机电职业技术学院 | Aluminum profile integrated die-casting equipment |
| CN120480140A (en) * | 2025-06-18 | 2025-08-15 | 东莞市锐准精密金属有限公司 | Continuous feeding sectional die casting equipment |
-
2021
- 2021-04-01 CN CN202120670078.XU patent/CN216966235U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118218559A (en) * | 2024-04-11 | 2024-06-21 | 苏州瑞泰克散热科技有限公司 | Cold water plate die casting device and method for new energy vehicles |
| CN120286674A (en) * | 2025-06-12 | 2025-07-11 | 山西机电职业技术学院 | Aluminum profile integrated die-casting equipment |
| CN120480140A (en) * | 2025-06-18 | 2025-08-15 | 东莞市锐准精密金属有限公司 | Continuous feeding sectional die casting equipment |
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