CN112139474A - Die changing method and device for large vertical high-pressure casting machine - Google Patents
Die changing method and device for large vertical high-pressure casting machine Download PDFInfo
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- CN112139474A CN112139474A CN202011135306.XA CN202011135306A CN112139474A CN 112139474 A CN112139474 A CN 112139474A CN 202011135306 A CN202011135306 A CN 202011135306A CN 112139474 A CN112139474 A CN 112139474A
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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
- B22D17/26—Mechanisms or devices for locking or opening dies
- B22D17/266—Mechanisms or devices for locking or opening dies hydraulically
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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
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Abstract
The invention discloses a die changing method and a die changing device for a large vertical high-pressure casting machine, which are used for solving the problems that the whole height of a locking and opening die mechanism of the existing vertical high-pressure casting machine is too high, the exhaust of a forming die is not clean, air holes and shrinkage cavities exist in a formed part, the production beat is slow, and the single-machine yield is not high. The invention divides the mold opening function of the traditional machine lock into two parts; the mold locking is mainly carried out on the host machine, the mold opening is mainly carried out on the mold opening machine, and the mold changing system switches the mold back and forth between the host machine and the mold opening machine; the executing device of the main machine mode locking action adopts a short-stroke oil cylinder, so that the height of the whole machine is obviously reduced, and the main machine mechanism is simplified. The technology of the invention realizes that the process of spraying the liquid such as the release agent, the lubricating oil and the like on the surface of the die is far away from the main machine, so that the main machine is cleaner and cleaner compared with the traditional machine, and the operating environment of workers is obviously improved; in the process of transferring the mold, mechanical vibration with specific frequency is artificially generated to assist the mold to discharge residual gas in the cavity, and meanwhile, the generation of shrinkage cavities and shrinkage porosity is reduced.
Description
Technical Field
The invention relates to a die changing method and a die changing device for a large vertical high-pressure casting machine, and belongs to the field of mechanical manufacturing equipment.
Background
In the process of die-casting production, a die-casting die needs to frequently switch a mode locking state and a mode opening state; under the mode locking state, liquid metal is injected into a mold cavity to realize the mold filling and phase change solidification processes of the casting mold; and taking out the die-cast product in a die opening state, and performing necessary machining to obtain a finished product. Die casting die mode locking and die sinking state's switching is realized by locking die sinking mechanism, and smooth-going, the continuity that mode locking and die sinking state switch are at first need be ensured to this mechanism, and secondly guarantee mode locking pressure and reach the default, avoid because mode locking pressure is not enough, the molten metal that leads to splashes, causes the product precision to descend, casualties even.
The mold locking and opening mechanism for vertical high pressure casting machine includes mainly hinged rod mechanism similar to that of traditional casting machine, oil cylinder mechanism similar to that of oil press and mold locking and opening mechanism similar to that of two plate machines. The common problems of the mechanisms are that the structure is complex, and the movement stroke of the mechanism is long; on one hand, the mechanism is easy to damage in long-time service, on the other hand, the whole machine height of the vertical high-pressure casting machine is very high, and the difficulty of logistics transportation, factory building and later maintenance is increased. It is worth mentioning that, along with the improvement of the pressure and the tonnage of the vertical high-pressure casting machine, the complexity of the mold locking and opening mechanism is higher and higher in order to generate higher mold locking pressure; the traditional mold locking and unlocking mechanism is very difficult to further increase the mold locking pressure.
In order to solve the above problems, there have been developed some new lock and unlock mechanisms, as described in cited patent 1 to cited patent 4.
Patent 3 is cited. Chinese patent, CN201922421985.6, a die casting machine clamping mechanism discloses a die casting machine clamping mechanism, becomes slip transmission through with original gear and screw connecting rod transmission, has reduced drive assembly, has avoided transmission in-process transmission power consumption too much, makes die casting machine clamping mechanism reach simple structure's purpose, improves die casting machine clamping mechanism's transmission efficiency.
Patent 4 is cited. Chinese patent, CN201610274231.0, the quick die sinking device of die casting machine discloses a quick die sinking device of die casting machine, and this quick die sinking device includes the mode locking hydro-cylinder, opens the mode locking direction valve, back pressure valve, cartridge valve, is used for controlling the closed solenoid valve with opening of cartridge valve, the oil inlet of cartridge valve is connected to the rodless chamber, and the oil inlet of back pressure valve is connected to the oil-out of this cartridge valve, and this design has increased the latus rectum that the rodless chamber returned oil way, and during the die sinking state, the speed that the rodless chamber went out oil increased, makes the die sinking speed accelerate, has shortened system cycle time, improves the production efficiency of die casting product.
In order to improve the quality of the cast shapes, mechanical vibration assisted forming processes have been developed, as described in the cited patent 5.
Patent 5 is cited. Chinese patent, CN201810057498.3, a casting vibration device, discloses a casting vibration device, which adopts a variable frequency vibration motor and an ultrasonic generator to simultaneously tap the liquid metal in the inner cavity of the worktable, so that the liquid being excited continuously washes out the solidified and solidifying crystals, thereby improving the comprehensive performance of the alloy, and having good tapping effect and high tapping speed.
Patents 1-4 are cited to optimize a mold locking mechanism of a forming machine, and have the beneficial effects of quickly opening the mold, simplifying the structure and reducing the occupied area, but the technology is not suitable for a large vertical high-pressure casting machine, and the beneficial effects do not include reducing the height of the whole machine; the scheme that the mold opening machine is arranged independently from the host does not appear in the disclosed technology.
Patent 5 cited in the introduction adopts a variable frequency vibration motor and an ultrasonic generator to simultaneously tap the liquid metal in the inner cavity of the worktable; the technical scheme can improve the quality of the formed piece, but has the defects of high implementation cost and low vibration source amplitude.
The invention provides a die changing method and a die changing device for a large vertical high-pressure casting machine, wherein a die is switched back and forth between a main machine and a die sinking machine by the system; the short-stroke oil cylinder is adopted for the mode locking of the host machine, and the long-stroke oil cylinder is adopted for the mold opening of the mold opening machine; the arrangement reduces the overall height of the host, simplifies the structure and reduces the failure rate; the independently arranged mold opening machine enables maintenance to be simpler and more convenient, and meanwhile, the process of spraying liquid such as a release agent, lubricating oil and the like on the surface of the mold is far away from the main machine, so that the main machine is cleaner and tidier compared with the traditional machine, and the operating environment of workers is obviously improved; in the process of switching and transferring the die back and forth between the host and the die sinking machine, mechanical vibration with specific frequency is artificially generated to assist the die to discharge residual gas in the cavity and reduce the generation of shrinkage cavity and shrinkage porosity.
Disclosure of Invention
In order to manufacture large-size cast products, the tonnage of a casting machine needs to be increased, and the casting process needs to be improved. The large vertical high-pressure casting machine is heavy casting equipment facing large-scale formed parts. Generally, the relative position of the die and the host is fixed unless the die is replaced or overhauled, and the locking and opening actions of the die are realized through a die locking and opening mechanism on the host. The mold opening action of the mold is realized by applying a long-stroke oil cylinder, so that the height of the whole machine is very high, and the difficulties of logistics transportation, factory building and later maintenance are increased.
The technical problem solved by the invention is as follows: 1) the whole machine height of the large vertical high-pressure casting machine is very high; 2) air holes are reserved in the high-pressure casting forming part and are often accompanied by shrinkage cavity and shrinkage porosity; 3) the production rhythm is slow, and the single machine output is not high.
Aiming at the problems, the technical scheme adopted by the invention is as follows: a die opening machine is independently arranged on one side of a main machine of the large-scale vertical high-pressure casting machine, and the die is switched back and forth between the main machine and the die opening machine; the mold opening machine comprises a mold changing system and a mold locking and opening mechanism; the execution device of the mode locking action of the host adopts a short-stroke oil cylinder, so that the height of the whole machine is obviously reduced; the actuating device of the mold opening action of the mold opening machine adopts a small-cylinder-diameter and long-stroke oil cylinder.
The die opening and closing oil cylinder on the vertical high-pressure casting machine has very short stroke, but has large cylinder diameter and large thrust, and is mainly used for die locking. The height of the whole vertical high-pressure casting machine can be reduced, and the mold locking and opening mechanism is simplified; the independently arranged mold opening machine enables maintenance to be simpler and more convenient, and meanwhile, the host is far away from the process of spraying the mold release agent, the lubricating oil and other liquid on the surface of the mold, so that the host is cleaner and tidier compared with the traditional machine, and the operating environment of workers is obviously improved.
The innovation of the technical scheme is as follows: 1) the die sinking mechanism is independently arranged, so that the over-high height of the whole machine caused by the die sinking mechanism is avoided; 2) the independently arranged mold opening machine enables the structure of the main machine to be simpler, and is convenient for subsequent maintenance; 3) the pollution to a host machine in the process of spraying the mold surface with the release agent, the lubricating oil and the like is reduced, and compared with the traditional equipment scheme, the operating environment of workers is obviously improved; 4) in the mould transportation process, through specific frequency's mechanical vibration, assist the mould with the inside residual gas of die cavity discharge, reduce the production of shrinkage cavity shrinkage porosity simultaneously, promote the quality of casting the product.
The invention relates to a die changing method for a large vertical high-pressure casting machine, which is characterized by comprising the following specific technical characteristics: a mold opening machine is independently arranged beside a main machine of the large vertical high-pressure casting machine, and the mold locking and opening functions of the mold are separated; the motion actuating mechanism with the mold locking function is positioned on the large vertical high-pressure casting machine host, and the motion actuating mechanism with the mold opening function is positioned on the mold opening machine; the mold opening machine comprises a mold changing system and a mold locking and opening mechanism; in the continuous die-casting process, the die changing system alternately connects the die with the large vertical high-pressure casting machine and the die sinking machine, and when the die is connected with the large vertical high-pressure casting machine, the die is in a locking state to complete the processes of filling the molten metal and phase-changing solidification; when the mould is connected with a mould opening machine, the cast finished part is separated from the mould, and then a surface coating in a liquid or powder state, such as a release agent, lubricating oil, a coolant and the like, is manually or automatically sprayed on the surface of the mould.
After the mould is connected with a large vertical high-pressure casting machine, liquid metal is injected into a mould pouring gate, when the mould filling stage is completed, the mould is placed still for a time interval T, and then a mould changing system starts to work to connect the mould with a mould opening machine; after said time interval T, the liquid metal in the runner has solidified, but the liquid metal in the cavity has not yet completely solidified; the time interval T is calculated by the size of the formed part and the high-pressure casting process;
in the process of transferring the die by the die changing system, mechanical vibration with frequency F is artificially generated, the mechanical vibration is conducted to liquid metal which is not completely solidified in the die cavity, and residual gas in the die cavity is discharged;
a large vertical high-pressure casting machine is provided with two or more mold opening machines, and two or more molds participate in the alternate connection with the vertical high-pressure casting machine and the mold opening machines.
The invention relates to a die changing device for a large vertical high-pressure casting machine, which is characterized by comprising the following specific technical characteristics: the large-scale vertical high-pressure casting machine comprises a main machine and a die sinking machine; the mold opening machine comprises a mold trolley, a mold moving oil cylinder and a mold clamping device component;
the implementation steps of the device comprise steps a) to N):
A) the mold is located at an initial position, the initial position is located on the mold opening machine, and the initial state of the mold opening machine is mold opening;
B) spraying operation on the surface of the mould;
C) closing the mold by a mold opening machine;
D) releasing the mold by the mold clamping device;
E) the piston rods of the lifting cylinders of the main machine and the die opening machine extend out, and the die trolley rises;
F) a piston rod of the mold moving oil cylinder extends out to drive the mold trolley to move to the host along the guide rail;
G) when the mould trolley reaches the position of the positioning ring of the host machine, the piston rod of the lifting oil cylinder of the host machine descends to drive the mould trolley to descend;
H) locking the mode of the host;
I) injecting by a host;
J) a piston rod of a lifting oil cylinder of the main machine extends out, and a mould trolley rises;
l) retracting a piston rod of the mold moving oil cylinder to drive the mold trolley to move to the mold opening machine along the guide rail;
m) the mould trolley reaches the position of the mould opening machine positioning ring, and the piston rod of the lifting oil cylinder of the host machine descends to drive the mould trolley to descend;
and N) clamping the die by the die clamper, returning the die to the initial state of die opening, and taking out the formed die casting.
Drawings
FIG. 1 is the overall layout of a die change device facing a large vertical high-pressure casting machine.
FIG. 2 is a side view of the overall layout of the die change apparatus facing a large vertical high-pressure casting machine.
Fig. 3 is a schematic structural view of the mold opening machine.
Fig. 4 is a schematic view of the structure of the mold cart.
FIG. 5 is a schematic sectional view of the mold cart A-A.
In the figure, 1, host; 2, opening the die machine; 21, a mold; 22, a mold trolley; 25, moving a mold oil cylinder; 26, a die clamper; 31, a wheel; 32, a wheel axle; 33, connecting the mould moving oil cylinder with a flange; 34, a mould trolley main body; 35, clamped block; 36, positioning ring.
Detailed Description
The following examples further describe embodiments of the process of the present invention. It should be noted that the present invention is not limited to the matters shown in the specific embodiments. Variations and adaptations of the present invention that occur to those skilled in the art based on the description herein and well known in the art are acceptable and encompassed within the scope of the present invention as claimed.
An embodiment is a method embodiment.
The mold locking and mold opening functions of the large vertical high-pressure casting machine mold are separated, and the specific implementation mode is as follows: a die sinking machine 2 is independently arranged beside a main machine 1 of the large vertical high-pressure casting machine; the motion actuating mechanism of the mold locking action of the mold 21 is positioned on the host 1, and the motion actuating mechanism of the mold opening action of the mold 21 is positioned on the mold opening machine 2; the mold opening machine 2 comprises a mold changing system and a mold opening mechanism;
in the continuous die-casting process, the die changing system alternately connects the die 21 with the main machine 1 and the die sinking machine 2; when the mould 21 is connected with the large vertical high-pressure casting main machine 1, the main machine 1 provides locking force to complete the processes of filling the molten metal and phase-change solidification; when the mold 21 is connected with the mold opening machine 2, the mold opening mechanism performs mold opening action on the mold 21, then separates the cast finished product from the mold 21, and manually or automatically sprays a surface coating in a liquid or powder state, such as a release agent, lubricating oil, a coolant and the like, on the surface of the mold;
preferably, the execution device of the main machine mode locking action adopts a short-stroke oil cylinder, so that the height of the whole machine is obviously reduced; the actuating device of the mold opening action of the mold opening machine adopts a small-cylinder-diameter and long-stroke oil cylinder.
After the mould 21 is connected with the large vertical high-pressure casting machine main machine 1, liquid metal is injected along a pouring gate of a cavity of the mould 21, when the mould filling stage is completed, the mould is kept still for a time interval T, then a mould changing system starts to work, and the mould is connected with a mould opening machine; after said time interval T, the liquid metal in the runner has solidified, but the liquid metal in the cavity has not yet completely solidified; the time interval T is derived from the dimensions of the shaped part and the high-pressure casting process.
In the transfer process of the die changing system, mechanical vibration with frequency of F is artificially generated, the mechanical vibration is conducted to liquid metal which is not completely solidified in the die cavity, and residual gas in the die cavity is discharged.
The second embodiment is an improved method embodiment of the first embodiment.
The difference between the second embodiment and the first embodiment is that: a large vertical high-pressure casting machine is provided with two or more mold opening machines, and two or more molds participate in the alternate connection with the vertical high-pressure casting machine and the mold opening machines. The method has the advantages that the metal liquid phase change solidification process is completed on the die transferring process and the die opening machine, and the host machine does not need to wait for the complete phase change solidification of the metal liquid, so the frequency of mode locking and filling of the host machine can be obviously improved, and the yield is improved;
preferably, the casting product object of the second embodiment is a large-format metal die-cast product.
The third embodiment is an apparatus embodiment.
In the embodiment, the device generally comprises a large vertical high-pressure casting machine main machine 1 and a die sinking machine 2, wherein the die sinking machine comprises a die changing system and a die sinking mechanism; the motion executing device of the die changing system comprises a die moving oil cylinder 25 and a die trolley 22;
the mould trolley 22 is characterized by comprising a mould trolley main body 34, wheels 31, a wheel shaft 32, a mould clamping device 26, a mould moving oil cylinder connecting flange 33, a clamped block 35 and a positioning ring 36;
the die-shifting cylinder connecting flange 33 is used for connecting the die-shifting cylinder 25 and the die trolley 22;
the function of the clamped block 35 is to provide a firm clamping position for the die clamper 26;
the positioning ring 36 is used for providing a positioning reference for the mold 21;
the implementation steps of the device comprise steps a) to N):
A) the mold 21 is located at an initial position, the initial position is located on the mold opening machine 2, and the initial state of the mold opening machine 2 is mold opening;
B) spraying operation on the surface of the mold 21;
C) opening the die machine 2 and closing the die;
D) the die clamper 26 releases the die;
E) piston rods of lifting cylinders of the main machine 1 and the die sinking machine 2 extend out, and the die trolley 22 rises;
F) the piston rod of the mould moving oil cylinder extends out to drive the mould trolley 22 to move to the host machine along the guide rail;
G) when the mould trolley 22 reaches the position of the positioning ring of the main machine 1, the main machine 1 lifts the piston rod of the oil cylinder to descend, and the mould trolley 22 is driven to descend;
H) the host machine 1 is locked;
I) injecting by the host machine 1;
J) a piston rod of a lifting oil cylinder of the host 1 extends out, and the mould trolley 22 rises;
l) retracting a piston rod of the mold moving oil cylinder 25 to drive the mold trolley 22 to move to the mold opening machine 2 along the guide rail;
m) the mould trolley 22 reaches the position of the positioning ring 36 of the mould opening machine, and the piston rod of the lifting oil cylinder of the host machine descends to drive the mould trolley 22 to descend;
n) the clamp 26 clamps the clamped block 35 of the mold 21, returns the mold 21 to the initial state of opening the mold, and takes out the molded die-cast article.
In the process that the mould trolley 22 moves from the main machine to the mould opening machine 2 along the guide rail, mechanical vibration with the frequency of F is artificially generated, the mechanical vibration is conducted to liquid metal which is not completely solidified in the cavity, and residual gas in the cavity is discharged;
the present embodiment provides three proven methods for artificially generating mechanical vibration, and it should be noted that methods other than these three methods should also fall within the scope of the present invention if they produce the same technical effects as the technical features of the present invention;
the method comprises the following steps: processing pits, grooves or lug bosses with specific intervals on the surface of the guide rail, and generating mechanical vibration with specific frequency when the mold trolley passes through the surface features at a specific speed;
the second method comprises the following steps: the outer circular surface of the wheel 31 of the mold trolley 22 is provided with pits, grooves or bosses with specific intervals, and when the mold trolley 22 moves on the surface of the guide rail at a specific speed, the surface features generate mechanical vibration with specific frequency.
The third method comprises the following steps: at a fixed position on the mold trolley 22, a mechanical vibration generating device is mounted, including one of an ultrasonic transducer, a motor, and a buzzer.
Claims (9)
1. A die change method for a large vertical high-pressure casting machine is characterized by comprising the following steps: a mold opening machine (2) is independently arranged beside a main machine (1) of the large vertical high-pressure casting machine, and the mold locking and opening functions of a mold (21) are separated; the motion actuating mechanism with the mold locking function of the mold (21) is positioned on the host (1), and the motion actuating mechanism with the mold opening function of the mold (21) is positioned on the mold opening machine (2); the mold opening machine (2) comprises a mold changing system and a mold opening mechanism; in the continuous die-casting process, the die changing system alternately connects the die (21) with the large vertical high-pressure casting machine main machine (1) and the die sinking machine (2); when the die (21) is connected with the main machine (1), the main machine (1) provides locking force to complete the processes of filling the molten metal and phase-changing solidification; when the mould (21) is connected with the mould opening machine (2), the cast finished piece is separated from the mould (21), and then the surface coating in a liquid or powder state, such as a release agent, lubricating oil, a coolant and the like, is manually or automatically sprayed on the surface of the mould (21).
2. The die change method for the large vertical high-pressure casting machine according to claim 1, wherein the die change method comprises the following steps: after the mould (21) is connected with the large vertical high-pressure casting machine main machine (1), liquid metal is injected along a pouring gate of a cavity of the mould (21), when the mould filling stage is completed, the mould (21) is kept still for a time interval T, then a mould changing system starts to work, and the mould (21) is connected with the mould opening machine (2); after said time interval T, the liquid metal in the runner has solidified, but the liquid metal in the cavity has not yet completely solidified; the time interval T is derived from the dimensions of the shaped part and the high-pressure casting process.
3. A die-changing method for a large vertical high-pressure casting machine according to claims 1 and 2, characterized in that: in the transferring process of the die changing system for the die (21), mechanical vibration with frequency of F is artificially generated, the mechanical vibration is conducted to liquid metal which is not completely solidified in the die cavity, and residual gas in the die cavity is discharged.
4. A die-changing method facing a large vertical high-pressure casting machine according to claims 1, 2 and 3, characterized in that: a main machine (1) of a large-scale vertical high-pressure casting machine is provided with two or more mold opening machines (2), and two or more molds (21) participate in the alternate connection of the main machine (1) and the mold opening machines (2).
5. The utility model provides a die change device towards large-scale vertical high pressure casting machine which characterized in that: the device comprises a large vertical high-pressure casting machine main machine (1) and a die sinking machine (2); the mold opening machine comprises a mold changing system and a mold opening mechanism; the motion execution device of the die changing system comprises a die moving oil cylinder (25) and a die trolley (22); the die trolley (22) is characterized by comprising a die trolley main body (34), wheels (31), a wheel shaft (32), a die clamper (26), a die moving oil cylinder connecting flange (33), a clamped block (35) and a positioning ring (36);
the die-shifting oil cylinder connecting flange (33) is used for connecting the die-shifting oil cylinder (25) and the die trolley (22);
the clamped block (35) has the function of providing a stable clamping position for the mold clamp (26);
the function of the locating ring (36) is to provide a locating reference for the mould (21).
6. The die-changing device facing a large vertical high-pressure casting machine according to claim 5, wherein: the mould (21) reciprocates between the mould opening machine (2) and the main machine (1) and is divided into steps A) to N);
A) the mold (21) is located at an initial position, the initial position is located on the mold opening machine (2), and the initial state of the mold opening machine (2) is mold opening;
B) spraying operation on the surface of the die (21);
C) the mold opening machine (2) closes the mold;
D) the mold clamp (26) releases the mold (21);
E) piston rods of lifting cylinders of the main machine (1) and the die sinking machine (2) extend out, and the die trolley (22) rises;
F) the piston rod of the mould moving oil cylinder extends out to drive the mould trolley (22) to move to the main machine (1) along the guide rail;
G) the mould trolley (22) reaches the position of the positioning ring of the host (1), and the host (1) lifts the piston rod of the oil cylinder to descend so as to drive the mould trolley (22) to descend;
H) the host machine (1) locks the mold;
I) injecting by the host (1);
J) a piston rod of a lifting oil cylinder of the main machine (1) extends out, and a mould trolley (22) rises;
l) the piston rod of the mould moving oil cylinder (25) retracts to drive the mould trolley (22) to move to the mould opening machine (2) along the guide rail;
m) and the mould trolley (22) reach the position of a positioning ring (36) of the mould opening machine, and a piston rod of a lifting oil cylinder of the host machine descends to drive the mould trolley (22) to descend;
n) and a die clamper (26) clamp a clamped block (35) of the die (21), so that the die (21) returns to the initial state of die opening, and the die casting is taken out and molded.
7. A die-changing device facing a large vertical high-pressure casting machine according to claims 5 and 6, characterized in that: in the process that the mould trolley moves from the main machine to the mould opening machine along the guide rail, mechanical vibration with frequency F is artificially generated, the mechanical vibration is conducted to liquid metal which is not completely solidified in the cavity, and residual gas in the cavity is discharged; the mechanical vibration is generated by machining specific spaced-apart pits, grooves or lands on the surface of the rail, and generating mechanical vibration at a specific frequency as the mold car (22) passes over the lands at a specific speed.
8. A die-changing device facing a large vertical high-pressure casting machine according to claims 5 and 6, characterized in that: in the process that the mould trolley moves from the main machine to the mould opening machine along the guide rail, mechanical vibration with frequency F is artificially generated, the mechanical vibration is conducted to liquid metal which is not completely solidified in the cavity, and residual gas in the cavity is discharged; the mechanical vibration is generated by processing pits, grooves or lug boss shapes at specific intervals on the outer circular surface of the wheel (31) of the die trolley, and when the die trolley moves on the surface of the guide rail at a specific speed, the surface shapes generate mechanical vibration at a specific frequency.
9. A die-changing device facing a large vertical high-pressure casting machine according to claims 5 and 6, characterized in that: in the process that the mould trolley moves from the main machine to the mould opening machine along the guide rail, mechanical vibration with frequency F is artificially generated, the mechanical vibration is conducted to liquid metal which is not completely solidified in the cavity, and residual gas in the cavity is discharged; the mechanical vibration is generated by a mechanical vibration generating device fixed on the mould trolley (22), such as an ultrasonic transducer, a motor, a buzzer and the like.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011135306.XA CN112139474A (en) | 2020-10-21 | 2020-10-21 | Die changing method and device for large vertical high-pressure casting machine |
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| CN202011135306.XA CN112139474A (en) | 2020-10-21 | 2020-10-21 | Die changing method and device for large vertical high-pressure casting machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921814A (en) * | 2022-12-29 | 2023-04-07 | 广州和德轻量化成型技术有限公司 | Die casting machine and die casting method |
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2020
- 2020-10-21 CN CN202011135306.XA patent/CN112139474A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921814A (en) * | 2022-12-29 | 2023-04-07 | 广州和德轻量化成型技术有限公司 | Die casting machine and die casting method |
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