CN116274933A - High-performance structural system of large-tonnage die-casting vacuum machine - Google Patents
High-performance structural system of large-tonnage die-casting vacuum machine Download PDFInfo
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- CN116274933A CN116274933A CN202211718108.5A CN202211718108A CN116274933A CN 116274933 A CN116274933 A CN 116274933A CN 202211718108 A CN202211718108 A CN 202211718108A CN 116274933 A CN116274933 A CN 116274933A
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- vacuum
- die
- electromagnetic valve
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- vacuum tank
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/32—Controlling equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to the technical field of die casting, in particular to a high-performance structural system of a large-tonnage die casting vacuum machine. The device comprises a die, a pressing chamber matched with the die to be connected, a vacuum balancing system device connected with the die, and a vacuum machine control system for controlling the vacuum balancing system device and the pressing chamber. The invention has the advantages that: the technical scheme solves the defects of poor molding, loose inside, gas entanglement and the like of the large-tonnage structural member caused by gas, and greatly reduces the manual maintenance cost and the consumable use cost while improving the product.
Description
Technical Field
The invention relates to the technical field of die casting, in particular to a high-performance structural system of a large-tonnage die casting vacuum machine.
Background
The large-tonnage die casting has the advantages of large product structure, long flow, thin wall thickness, short filling time, and needs to finish rapid filling under 60ms, high-temperature molten aluminum can form rapid cooling after entering a die cavity, air in the die cavity can not be completely discharged, and the internal structure of the product is loose, not compact and has poor mechanical properties, and the condition that the die environment can not have back pressure and resistance before filling is needed.
Referring to fig. 2, after the die 1 is clamped in the prior art, the control system receives a clamping signal given by the die casting machine, the vacuum pump is started, the vacuum valve is opened, the vacuum valve 10 is in a closed state, the die casting machine waits for pushing the injection rod 23 to move forwards, the die casting machine gives an IO signal to the control system 3 of the vacuum machine when reaching a vacuum starting set position, the electromagnetic valve 6 is opened, the air in the die 1 carries out differential pressure interaction through the negative pressure environment of the vacuum tank 4, when the injection rod 23 moves forwards to reach a vacuum ending position, the vacuum valve 10 and the electromagnetic valve 6 are closed, the sensor 9 displays the vacuum value of the injection rod in the moving process, if the large-tonnage die forms a relatively high vacuum environment before being filled with aluminum liquid, the structural design of the large-tonnage vacuum machine is critical, the structural design of the common vacuum machine only considers that the die port is additionally provided with the vacuum valve, the vacuum exhaust from a single vacuum valve port cannot meet the requirements because the product wall thickness is thin, the flow is long, the gas flow down flows down to form a tail end pressure loss is large, and the vacuum requirement of the large-tonnage casting cannot meet.
Disclosure of Invention
The invention aims to provide a high-performance structural system of a large-tonnage die-casting vacuum machine, which overcomes the defects in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the high-performance structural system comprises a die, a pressing chamber matched with the die to be connected, a vacuum balance system device connected with the die, a vacuum machine control system used for controlling the vacuum balance system device and the pressing chamber, wherein the vacuum balance system device comprises a first vacuum tank communicated with the die, a second vacuum tank communicated with the pressing chamber, a first electromagnetic valve and a second electromagnetic valve respectively connected with the first vacuum tank and the second vacuum tank through pipelines, a vacuum pump communicated with the first electromagnetic valve and the second electromagnetic valve through the electromagnetic valves, a pressing chamber vacuum device connected with the pressing chamber, a pressing chamber electromagnetic valve connected between the pressing chamber vacuum device and the second vacuum tank, a third electromagnetic valve connected between the die and the first vacuum tank, and a plurality of aluminum water vacuum valves arranged on the die.
Preferably, an injection rod is movably arranged in the compression chamber.
Preferably, a cavity is arranged in the die.
Preferably, the first vacuum tank is communicated with the die through two pipelines, and a third electromagnetic valve is arranged on each pipeline.
Preferably, three pipelines are connected between the second vacuum tank and the pressure chamber, and pressure chamber electromagnetic valves are arranged on the three pipelines.
The beneficial effects of the invention are as follows: the technical scheme solves the defects of poor molding, loose inside, gas entrainment and the like of the large-tonnage structural member caused by gas. The maximum aluminum casting die is applied to a 12000T die casting machine, the maximum aluminum casting can be produced to be 120KG, the product elongation can be more than 18%, and the manual maintenance cost and the consumable use cost are greatly reduced while the product is improved.
Drawings
FIG. 1 is a schematic diagram of a high performance structural system of a large tonnage die casting vacuum machine according to the present invention;
FIG. 2 is a schematic diagram of a prior art structure;
in the figure: 1. a mold; 11. a cavity; 12. a molten aluminum vacuum valve; 2. a pressing chamber; 21. a plenum vacuum device; 22. a pressure chamber electromagnetic valve; 23. a shot rod; 3. a vacuum machine control system; 4. a first vacuum tank; 41. a first electromagnetic valve; 42. a third electromagnetic valve; 5. a second vacuum tank; 51. a second electromagnetic valve; 6. an electromagnetic valve; 7. a vacuum pump; 9. a pressure sensor; 10. and a vacuum valve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1, a high-performance structural system of a large-tonnage die casting vacuum machine comprises a die 1, a pressing chamber 2 connected with the die 1 in a matching way, a vacuum balancing system device connected with the die 1, a vacuum machine control system 3 for controlling the vacuum balancing system device and the pressing chamber,
the vacuum balance system device comprises a first vacuum tank 4 communicated with the die 1, a second vacuum tank 5 communicated with the pressure chamber, a first electromagnetic valve 41 and a second electromagnetic valve 51 respectively connected with the first vacuum tank 4 and the second vacuum tank 5 through pipelines, a vacuum pump 7 communicated with the first electromagnetic valve 41 and the second electromagnetic valve 51 through an electromagnetic valve 6, a pressure chamber vacuum device 21 connected with the pressure chamber 2, a pressure chamber electromagnetic valve 22 connected between the pressure chamber vacuum device 21 and the second vacuum tank 5, a third electromagnetic valve 42 connected between the die 1 and the first vacuum tank 4, and a plurality of aluminum water vacuum valves 12 arranged on the die 1.
An injection rod 23 movably disposed in the compression chamber 2.
A cavity 11 is provided in the mold 1.
In the embodiment, 4 groups of aluminum water vacuum valves 12 are arranged on the left side of the die 1, 3 groups of aluminum water vacuum valves 12 are arranged on the right side of the die, a group of aluminum water vacuum valves 12 are arranged on the top of the die, and the die is arranged according to the shape of a die cavity, so that uniform feeding is ensured;
the two ends of the first vacuum tank 4 are connected with pipelines, a first electromagnetic valve 41 is arranged on one pipeline, the other end of the pipeline is communicated with the die 1 in two pipelines, and a third electromagnetic valve 42 is arranged on each pipeline;
the left end and the right end of the second vacuum tank 5 are respectively connected with pipelines, a third electromagnetic valve 51 is arranged on one pipeline of one end of the second vacuum tank 5, the pipelines of the other end are respectively connected with a pressing chamber vacuum device 21, the pressing chamber vacuum device 21 is matched with the pressing chamber 2 to be installed, and the pressing chamber electromagnetic valves 22 are arranged on the three pipelines;
three groups of vacuum pumps 7 are respectively connected with three groups of pipelines and connected with the first electromagnetic valve 4 and the third electromagnetic valve 51 in parallel, and electromagnetic valves 6 are arranged on three paths of pipelines;
after the vacuum machine control system 3 receives a die casting machine starting signal, the vacuum pump 7 is started, the electromagnetic valve 6, the first electromagnetic valve 41 and the second electromagnetic valve 51 are opened, after the pressures in the first vacuum tank 4 and the second vacuum tank 5 reach set values, the electromagnetic valve 6, the first electromagnetic valve 41 and the second electromagnetic valve 51 are closed, after the die 1 is closed in place, the third electromagnetic valve 42 on one side pipeline is opened, the die thimble box is in a negative pressure environment, molten metal is added through a charging hole, the die casting machine sends out a starting signal, after the vacuum machine control system 3 receives the die casting machine signal, the injection rod 23 moves forwards, after the punching head completely closes the charging hole, the third electromagnetic valve 42 and the pressure chamber electromagnetic valve 22 on the other side are moved for 50mm, and simultaneously, the molten aluminum vacuum valve 12 is opened. The injection rod 23 moves to the position of the pressure chamber vacuum port device 21, the pressure chamber electromagnetic valve 22 is sequentially closed, at the moment, the third electromagnetic valve 42 on the two pipelines and the aluminum water vacuum valve 12 are still in an open state, after the injection rod 23 moves to the ending set position, the third electromagnetic valve 42 and the aluminum water vacuum valve 12 are simultaneously closed, the rectification vacuumizing process is ended, and the next cycle is waited; the high-performance structural system of the large-tonnage die-casting vacuum machine reduces the conductance factors of gas wind speed and viscous flow from the aspects of aerodynamics and hydrodynamics, adopts a multi-path vacuum system structure, enables a large-tonnage die-casting die to form a relative vacuum environment, adopts a multi-point vacuum valve in the die, maximally distributes 11 paths, and improves 10 times on the basis of the original 400mbar by measuring the maximum distribution of the 11 paths at different points of the product through a sensor. The outside of the die utilizes the vacuum negative pressure balance principle to prevent large leakage caused by pressure difference, the pressure difference is measured to be below 20mbar.L/S at different points of the product through the sensor, and the leakage rate is improved by 12.5 times on the basis of the original 250 mbar.L/S. The large-tonnage die casting product has large projection area and multiple leakage points, and by utilizing the structural design of the high-vacuum system, the high-vacuum environment in the cavity is achieved, and meanwhile, the external influence factors are reduced, so that the stability of the product is fully ensured.
According to the technical scheme, on an original scheme, the external vacuum balance system device of the die is added, the multi-way vacuum valve device in the die and the multi-way vacuum device in the pressure chamber are completed together, so that the viscous flow conductance of the die gas is increased, the air speed of the pressure chamber gas is reduced, the leakage of the inside and the outside of the die caused by pressure difference is reduced, namely, the die cavity can quickly reach a high vacuum environment in effective time, and the influence caused by the pressure difference with the outside is avoided.
The invention has the advantages that the technical scheme solves the defects of poor molding, loose inside, gas entrainment and the like of the large-tonnage structural member caused by gas. The maximum aluminum casting die is applied to a 12000T die casting machine, the maximum aluminum casting can be produced to be 120KG, the product elongation can be more than 18%, and the manual maintenance cost and the consumable use cost are greatly reduced while the product is improved.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. The utility model provides a large-tonnage die-casting vacuum machine high performance structural system, its includes mould, cooperation the pressure chamber that the mould is connected, with the vacuum balance system device that the mould is connected, be used for controlling vacuum balance system device with the vacuum machine control system of pressure chamber, its characterized in that: the vacuum balance system device comprises a first vacuum tank communicated with the die, a second vacuum tank communicated with the pressing chamber, a first electromagnetic valve and a second electromagnetic valve which are respectively connected with the first vacuum tank and the second vacuum tank through pipelines, a vacuum pump communicated with the first electromagnetic valve and the second electromagnetic valve through the electromagnetic valves, a pressing chamber vacuum device connected with the pressing chamber, a pressing chamber electromagnetic valve connected between the pressing chamber vacuum device and the second vacuum tank, a third electromagnetic valve connected between the die and the first vacuum tank, and a plurality of aluminum water vacuum valves arranged on the die.
2. A high performance structural system of a large tonnage die casting vacuum machine according to claim 1, wherein: an injection rod is movably arranged in the compression chamber.
3. A high performance structural system of a large tonnage die casting vacuum machine according to claim 1, wherein: and a cavity is arranged in the die.
4. A high performance structural system of a large tonnage die casting vacuum machine according to claim 1, wherein: the first vacuum tank is communicated with the die through two pipelines, and a third electromagnetic valve is arranged on each pipeline.
5. A high performance structural system of a large tonnage die casting vacuum machine according to claim 1, wherein: the second vacuum tank is communicated with the pressure chamber through three pipelines, and the pressure chamber electromagnetic valves are arranged on the three pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211718108.5A CN116274933A (en) | 2022-12-29 | 2022-12-29 | High-performance structural system of large-tonnage die-casting vacuum machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211718108.5A CN116274933A (en) | 2022-12-29 | 2022-12-29 | High-performance structural system of large-tonnage die-casting vacuum machine |
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| Publication Number | Publication Date |
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| CN116274933A true CN116274933A (en) | 2023-06-23 |
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| CN202211718108.5A Pending CN116274933A (en) | 2022-12-29 | 2022-12-29 | High-performance structural system of large-tonnage die-casting vacuum machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116833388A (en) * | 2023-09-04 | 2023-10-03 | 宁波吉烨汽配模具有限公司 | Die casting equipment for metal plates |
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2022
- 2022-12-29 CN CN202211718108.5A patent/CN116274933A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116833388A (en) * | 2023-09-04 | 2023-10-03 | 宁波吉烨汽配模具有限公司 | Die casting equipment for metal plates |
| CN116833388B (en) * | 2023-09-04 | 2023-12-15 | 宁波吉烨汽配模具有限公司 | Die casting equipment for metal plates |
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