CN113245531A - High-performance aluminum casting vacuum casting forming device and casting method - Google Patents

Abstract

The invention discloses a high-performance cast aluminum piece vacuum casting forming device which comprises a base, a forming box, a cover plate and a cover plate driving device, wherein a liquid storage cavity is arranged in the base, the forming box is arranged on the base, the forming cavity is arranged in the forming box, a feeding hole is formed in the upper end of the forming cavity, a liquid inlet hole is formed in the upper surface of the base, and the cover plate driving device drives the cover plate to be close to or far away from the forming box; the shaping case includes four shaping piece drive arrangement and the mould split mechanism of splicing each other, has the arc wall on the lateral wall that the shaping piece was laminated each other, and the arc wall intercommunication on the adjacent shaping piece forms the through-hole, and the mould split mechanism includes the dwang, and inside the dwang stretched into the shaping case by the through-hole, the front end of dwang was equipped with oval lug. Compared with the prior art, the automatic forming device can automatically form the gypsum mould, controls the gypsum mould to automatically open and close, realizes continuous vacuum casting of the aluminum casting, improves the casting efficiency and reduces the labor cost.

Description

High-performance aluminum casting vacuum casting forming device and casting method

Technical Field

The invention relates to the technical field of vacuum casting, in particular to a high-performance aluminum casting vacuum casting forming device and a casting method.

Background

The aluminum casting is a device made of pure aluminum or aluminum alloy obtained by a casting processing method. Aluminum or aluminum alloy parts of various shapes and sizes, which are generally obtained by pouring aluminum or aluminum alloy heated to a liquid state into a cavity using a plaster mold, are generally called aluminum die castings. The existing casting process needs to firstly adopt gypsum to manufacture a mould, then manually take out the gypsum mould, then inject metal aluminum liquid into the gypsum mould, open the gypsum mould after the aluminum liquid is cooled, and take out a casting. The casting mode needs to move the gypsum mould for many times, so that the gypsum mould is easy to collide and damage, and the service life of the gypsum mould is shortened; and the existing casting process needs to be completed by a large amount of manpower, so that the labor cost is high. In addition, the casting process is not continuous, so that the casting efficiency is low.

In view of the above, the applicant has made an intensive study to solve the above problems and has made the present invention.

Disclosure of Invention

The invention mainly aims to provide a high-performance aluminum casting vacuum casting forming device and a casting method, which can automatically form a gypsum mould, control the gypsum mould to automatically open and close, realize continuous vacuum casting of aluminum castings, improve casting efficiency and reduce labor cost.

In order to achieve the above purpose, the solution of the invention is:

a high-performance vacuum casting forming device for cast aluminum parts comprises a base, a forming box, a cover plate and a cover plate driving device, wherein a liquid storage cavity is formed in the base, the forming box is arranged on the base, the forming cavity is formed in the forming box, a feed inlet is formed in the upper end of the forming box, a liquid inlet hole is formed in the upper surface of the base, the cover plate is arranged on the upper surface of the forming box in a covering mode, an air exhaust hole is formed in the cover plate, and the cover plate driving device drives the cover plate to be close to or far away from the forming box; the shaping case includes the shaping piece of four mutual concatenations, and shaping piece drive arrangement and the mould split mechanism that the drive shaping piece removed, the arc wall has on the lateral wall that the shaping piece was laminated each other, and the arc wall intercommunication on the adjacent shaping piece forms the through-hole, the mould split mechanism includes the dwang, the dwang stretches into the shaping incasement portion by the through-hole, the front end of dwang is equipped with oval lug.

Preferably, the mould split structure is still including splitting frame and synchronous drive mechanism, the even subsection setting of vertical direction is followed to the dwang, the rear end and the splitting frame of dwang rotate to be connected, synchronous drive mechanism establishes and drives the dwang and rotate simultaneously at the side of splitting frame.

Preferably, synchronous driving mechanism includes the tooth row, gear and first motor, the vertical setting of tooth row and with split frame sliding connection, the gear sleeve is established at the rear end of each dwang to the gear is connected with the tooth row meshing, first motor is established on the base, the power take off end of first motor is connected with the dwang that is in the below.

Preferably, the upper surface of shaping piece is equipped with the bellied fixed column that makes progress, the apron includes first apron and second apron, the both ends of first apron are equipped with first fixed orifices, the second apron includes connecting plate and the symmetry sets up the fixed plate at the connecting plate lower extreme, the fixed slot that supplies first apron embedding has between the fixed plate, be equipped with the second fixed orifices on the fixed plate.

Preferably, the cover plate driving device comprises a first cover plate driving mechanism and a second cover plate driving mechanism, the first cover plate driving mechanism comprises a first stand column, a second motor, a first swing arm and a first driving cylinder body, the first stand column is arranged on the side of the forming box, the second motor is arranged on the first stand column, one end of the first swing arm is connected with the power output end of the second motor, the other end of the first swing arm is provided with the first driving cylinder body, and a piston rod of the first driving cylinder body is connected with the upper end of the first cover plate.

Preferably, the second cover plate driving mechanism comprises a second upright post, a third motor, a second swing arm and a second driving cylinder body, one end of the second swing arm is connected with the second upright post in a rotating mode, the second driving cylinder body is installed at the other end of the second swing arm, the third motor is arranged on the second upright post and drives the second swing arm to swing, and a piston rod of the second driving cylinder body is connected with the connecting plate.

Preferably, the forming block driving device comprises a third driving cylinder, the third driving cylinder is arranged on the base, and a piston rod of the third driving cylinder is connected with the side wall of the forming block.

The casting method of the high-performance aluminum casting vacuum casting forming device comprises the following steps:

(1) splicing the forming blocks together;

(2) introducing liquid gypsum into a liquid storage cavity;

(3) placing the casting sample piece into a forming cavity and covering a cover plate;

(4) pumping the molding cavity to make the molding cavity in a vacuum state;

(5) injecting liquid gypsum into the molding cavity, and forming a gypsum mold after the liquid gypsum is solidified;

(6) the cover plate is separated from the forming blocks, the forming blocks are relatively separated by a small distance, and the gypsum mould is uniformly divided into a plurality of mould components by the mould splitting mechanism;

(7) taking out the casting sample;

(8) fitting the molding blocks again so as to splice the mold components together;

(9) and covering the cover plate, discharging the liquid gypsum in the liquid storage cavity, and injecting the molten metal aluminum into the liquid storage cavity.

(10) Pumping the molding cavity to make the molding cavity in a vacuum state, and injecting molten metal aluminum into the gypsum mold;

(11) after the molten metal is cooled and solidified, the forming blocks are relatively separated by a small distance, and the gypsum mold is separated by a mold splitting mechanism.

(12) And taking out the casting.

Compared with the prior art, beneficial effect lies in:

firstly, after the gypsum mould is formed, the gypsum mould does not need to be moved and taken out, and the metal liquid can be directly injected into the gypsum mould for casting, so that the phenomenon of collision and damage when the gypsum mould moves is avoided, the damage of the gypsum mould is reduced, and the quality of a cast product is improved.

Secondly, the invention can repeatedly and continuously utilize the plaster mold, thereby reducing the cost, realizing automatic vacuum casting and effectively improving the casting efficiency.

Thirdly, the invention is provided with the die splitting mechanism, which can equally divide the die into a plurality of mutually separated die components, thus realizing the automatic die opening and separation of the gypsum die, facilitating the taking out of the casting from the gypsum die and further improving the casting efficiency.

Drawings

Fig. 1 is a perspective view of the external structure of the present invention.

Fig. 2 is a perspective view of another external structure of the present invention.

Fig. 3 is a schematic cross-sectional structure of the present invention.

Fig. 4 is a partially enlarged view of the area a in fig. 2.

Fig. 5 is a partially enlarged view of the region B in fig. 3.

In the figure:

a base-1; a liquid storage cavity-11; a liquid inlet hole-12; a forming box-2; a molding cavity-21;

feed port-22; a forming block-23; a first molding block-231; a second molding block-232;

a third molding block-233; a fourth forming block-234; a forming block driving device-24;

an arc-shaped groove-25; a fixed column-26; a cover plate-3; a first cover plate-31; a first fixing hole-311;

a second cover plate-32; a connecting plate-321; a fixed plate-322; a second fixing hole-323;

a cover plate driving device-4; a first cover plate drive mechanism-41; a first upright-411;

a second motor-412; a first swing arm-413; a first drive cylinder-414;

a second cover plate drive mechanism-42; a second upright-421; a third motor-422;

a second swing arm-423; a second drive cylinder-424; a second swing arm-423;

a mold splitting mechanism-5; a rotating rod-51; an elliptical bump-52; synchronous drive-mechanism-53;

tooth row-531; gear-532; a first motor-533; splitting the frame-54.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

As shown in fig. 1-5, a high-performance vacuum casting forming device for cast aluminum parts comprises a base 1, a forming box 2, a cover plate 3 and a cover plate driving device 4, wherein a liquid storage cavity 11 is arranged in the base 1, the forming box 2 is arranged on the base 1 and is in sliding connection, a sealing ring is arranged on the lower surface of the forming box 2, and the sliding surface between the forming box 2 and the base 1 is sealed to avoid leakage of liquid gypsum or metal aluminum liquid. The inside shaping chamber 21 that is equipped with of shaping case 2 and the upper end is equipped with feed inlet 22, and the upper surface of base 1 is equipped with feed liquor hole 12, can set up in the liquid storage chamber 11 pump or other power device with the liquid in the liquid storage chamber 11 through feed liquor hole 12 input into in the shaping chamber 21. The cover plate 3 is covered on the upper surface of the forming box 2, the cover plate 3 is provided with an air exhaust hole, the air exhaust hole can be connected with air exhaust equipment through a pipeline so as to carry out vacuum air exhaust on the forming cavity 21, and the cover plate driving device 4 drives the cover plate 3 to be close to or far away from the forming box 2; the shaping case 2 includes four shaping pieces 23 of mutual concatenation, and shaping piece drive arrangement 24 and the mould split structure 5 that the drive shaping piece 23 removed have the arc wall 25 on the lateral wall that shaping piece 23 laminated each other, and the arc wall 25 intercommunication on the adjacent shaping piece 23 forms the through-hole, and mould split structure 5 includes dwang 51, and inside dwang 51 stretched into shaping case 2 by the through-hole, the front end of dwang 51 was equipped with oval lug 52.

After adopting above-mentioned structure, during operation, earlier let in liquid gypsum in stock solution chamber 11, shaping piece drive arrangement 24 drive shaping piece 23 is sealed tightly each other, places the appearance piece of foundry goods in shaping chamber 21 and covers apron 3, and the upper surface of appearance piece needs to support with the lower surface of apron 3, and the below joinable of appearance piece inlays the pole and makes and inlay the pole and can stretch into in the feed liquor hole 12 to form the runner mouth. Then the air extractor extracts air through the extraction hole on the cover plate 3, the molding cavity 21 is extracted to be in a vacuum state, then liquid gypsum in the liquid storage cavity 11 enters from the liquid inlet hole 12 and fills the molding cavity 21, a gypsum mold is formed after the liquid gypsum is solidified, the cover plate driving device 4 drives the cover plate 3 to open the feeding hole 22, and a sample piece in the mold is taken out. Afterwards liquid gypsum in the stock solution chamber 11 discharges and with in the metal liquid input stock solution chamber 11, apron 3 seals feed inlet 22 once more and extracts the vacuum, in the metal liquid gets into the gypsum mould by feed liquor hole 12, after the metal liquid solidifies into the foundry goods, the vice shaping piece 23 of shaping piece drive arrangement 24 drive relatively separate, mould split structure 5 equallys divide into four mould subassemblies with the gypsum mould to every mould subassembly relatively separates, makes things convenient for the foundry goods to take out from the gypsum. When casting again, the mould components can be pushed to be combined with each other only by enabling the forming blocks 23 to be close to each other, then the metal liquid is injected into the gypsum mould from the liquid inlet hole 12, and the steps are repeated, so that the continuous casting of the casting can be realized.

Preferably, the mold splitting mechanism 5 further includes a splitting frame 54 and a synchronous driving mechanism 53, the rotating rods 51 are uniformly distributed along the vertical direction, the rear ends of the rotating rods 51 are rotatably connected with the splitting frame 54, and the synchronous driving mechanism 53 is disposed at the side of the splitting frame 54 and drives the rotating rods 51 to rotate simultaneously. After adopting the above structure, since the front end of the rotating rod 51 is provided with the elliptical projection 52, the length of the elliptical projection 52 can be selected according to the thickness dimension of the plaster mold. Before the gypsum mold is manufactured, the forming blocks 23 are combined with each other, the rotating rod 51 drives the elliptical convex blocks 52 to extend into the forming cavity 21 from the through holes, the elliptical convex blocks 52 are positioned on the side wall of the forming cavity 21, the cross sections of the elliptical convex blocks 52 are elliptical, and the long axes of the elliptical convex blocks 52 extend in the vertical direction and are positioned on a uniform straight line. When the gypsum mould solidification shaping, oval lug 52 imbeds in the lateral wall of gypsum mould, during the split gypsum mould, each dwang 51 of synchronous drive mechanism 53 drive rotates simultaneously, make the major axis of oval lug 52 cross-section rotate to the horizontal direction, thereby make oval lug 52's transverse distance grow and strut the gypsum mould, the lateral wall of gypsum mould is cracked along the vertical direction that oval lug 52 set up, thereby split into a plurality of mould subassemblies with the gypsum mould, because the gypsum mould fracture, make the casting cavity volume grow in the gypsum mould, the foundry goods takes place to become flexible in the casting cavity, make things convenient for the foundry goods to take out. When the gypsum mold needs to be cast again, the synchronous driving mechanism 53 drives the rotating rods 51 to rotate simultaneously, so that the long axis of the section of the elliptical bump 52 rotates to the vertical direction to reset, and the gypsum components can be conveniently overlapped and tightly attached together again.

Preferably, the synchronous driving mechanism 53 includes a gear row 531, a gear 532 and a first motor 533, the gear row 531 is vertically disposed and slidably connected to the splitting frame 54, the gear 532 is sleeved on the rear end of each rotating rod 51, the gear 532 is engaged with the gear row 531, the first motor 533 is disposed on the base 1, and the power output end of the first motor 533 is connected to the rotating rod 51 located at the lowest position. After the structure is adopted, the first motor 533 drives the lowermost rotating rod 51 to rotate, the gear 532 on the rear end of the lowermost rotating rod 51 is driven to rotate, the gear 532 is meshed with the gear row 531 to drive the gear row 531 to vertically ascend or descend, and the gear row 531 simultaneously drives the remaining gear row 531 to simultaneously rotate in the ascending and descending process, so that synchronous deflection of the rotating rods 51 is realized, and the oval convex blocks 52 can more easily expand the side wall of the gypsum mold.

Preferably, the upper surface of the forming block 23 is provided with fixing posts 26 protruding upwards, the cover plate 3 includes a first cover plate 31 and a second cover plate 32, two ends of the first cover plate 31 are provided with first fixing holes 311, the second cover plate 32 includes a connecting plate 321 and fixing plates 322 symmetrically disposed at the lower end of the connecting plate 321, fixing slots for the first cover plate 31 to be embedded in are disposed between the fixing plates 322, and the fixing plates 322 are provided with second fixing holes 323. After the above structure is adopted, in the present embodiment, the molding block 23 includes the first molding block 231, the second molding block 232, the third molding block 233 and the fourth molding block 234 which are connected in sequence, when the cover plate 3 seals the molding cavity 21, the first cover plate 31 extends along the direction of the first molding block 231 toward the third molding block 233, and the first fixing holes 311 at two ends of the first cover plate 31 are respectively sleeved on the fixing posts 26 at the upper ends of the first molding block 231 and the third molding block 233, so as to limit the first molding block 231 and the third molding block 233 from moving horizontally; the second cover plate 32 is covered above the first cover plate 31, and the first cover plate 31 is embedded in the fixing groove. The fixed plate 322 is the same as the thickness of the first cover plate 31, so that the connecting plate 321 can press the upper end surface of the first cover plate 31, the first cover plate 31 is sealed more tightly, the second fixing holes 323 on the fixed plates 322 on two sides are respectively sleeved on the fixing columns 26 at the upper ends of the second forming block 232 and the fourth forming block 234, and therefore the first cover plate 31 and the second cover plate 32 are prevented from sliding mutually, meanwhile, horizontal deviation of the forming blocks 23 can be prevented, and the forming blocks 23 are attached to each other more tightly.

Preferably, the cover driving device 4 includes a first cover driving mechanism 41 and a second cover driving mechanism 42, the first cover driving mechanism 41 includes a first upright column 411, a second motor 412, a first swing arm 413 and a first driving cylinder 414, the first upright column 411 is disposed at a side of the forming box 2, the second motor 412 is disposed on the first upright column 411, one end of the first swing arm 413 is connected to a power output end of the second motor 412, the other end of the first swing arm is mounted with the first driving cylinder 414, and a piston rod of the first driving cylinder 414 is connected to an upper end of the first cover 31. After adopting above-mentioned structure, the first swing arm 413 of second motor 412 drive is turned about, and first drive cylinder body 414 drives first apron 31 and is close to or keeps away from shaping case 2, and in this implementation, first drive cylinder body 414 can adopt pneumatic cylinder body, and simple structure and cost are lower, convenient maintenance and change.

Preferably, the second cover driving mechanism 42 includes a second upright column 421, a third motor 422, a second swing arm 423 and a second driving cylinder 424, one end of the second swing arm 423 is rotatably connected to the second upright column 421, the other end of the second swing arm 423 is mounted on the second driving cylinder 424, the third motor 422 is disposed on the second upright column 421 and drives the second swing arm 423 to swing, and a piston rod of the second driving cylinder 424 is connected to the connecting plate 321. After adopting above-mentioned structure, third motor 422 drive second swing arm 423 carries out the luffing motion, and second drive cylinder body 424 drive second apron 32 is close to or keeps away from shaping case 2, and in this embodiment, second drive cylinder body 424 can adopt pneumatic cylinder body, and simple structure and cost are lower, convenient maintenance and change.

Preferably, the forming block driving device 24 includes a third driving cylinder, the third driving cylinder is disposed on the base 1, and a piston rod of the third driving cylinder is connected with a side wall of the forming block 23. After adopting above-mentioned structure, each third drive cylinder body corresponds respectively and connects a shaping piece 23, makes shaping piece 23 independently carry out horizontal migration respectively to drive shaping piece 23 and laminate or separate each other, in this embodiment, the third drive cylinder body can adopt hydraulic cylinder body, makes shaping piece 23 remove more steadily.

The casting method of the high-performance aluminum casting vacuum casting forming device comprises the following steps:

(1) splicing the forming blocks 23 together;

(2) introducing liquid gypsum into the liquid storage cavity 11;

(3) placing the casting sample piece into the forming cavity 21 and covering the cover plate 3;

(4) pumping the molding cavity 21 to make the molding cavity 21 in a vacuum state;

(5) injecting liquid gypsum into the molding cavity 21, and forming a gypsum mold after the liquid gypsum is solidified;

(6) the cover plate 3 is separated from the forming blocks 23, the forming blocks 23 are relatively separated by a small distance, and the gypsum mold is uniformly divided into a plurality of mold components by the mold splitting mechanism 5;

(7) taking out the casting sample;

(8) fitting the forming blocks 23 again so as to splice the mould components together;

(9) the cover plate 3 is covered, the liquid gypsum in the liquid storage cavity 11 is discharged, and the metal aluminum liquid is injected into the liquid storage cavity 11.

(10) Pumping the molding cavity 21 to make the molding cavity 21 in a vacuum state, and injecting molten metal aluminum into the gypsum mold;

(11) after the molten metal is cooled and solidified, the forming blocks 23 are relatively separated by a small distance, and the gypsum mold is separated by the mold splitting mechanism 5.

(12) And taking out the casting.

Compared with the prior art, beneficial effect lies in:

firstly, after the gypsum mould is formed, the gypsum mould does not need to be moved and taken out, and the metal liquid can be directly injected into the gypsum mould for casting, so that the phenomenon of collision and damage when the gypsum mould moves is avoided, the damage of the gypsum mould is reduced, and the quality of a cast product is improved.

Secondly, the invention can repeatedly and continuously utilize the plaster mold, thereby reducing the cost, realizing automatic vacuum casting and effectively improving the casting efficiency.

Thirdly, the invention is provided with the mold splitting mechanism 5, which can equally divide the mold into a plurality of mold components separated from each other, thus realizing the automatic mold opening and separation of the gypsum mold, facilitating the taking out of the casting from the gypsum mold and further improving the casting efficiency.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims (8)

1. A high-performance vacuum casting forming device for aluminum castings is characterized by comprising a base, a forming box, a cover plate and a cover plate driving device, wherein a liquid storage cavity is formed in the base, the forming box is arranged on the base, the forming cavity is formed in the forming box, a feeding hole is formed in the upper end of the forming box, a liquid inlet hole is formed in the upper surface of the base, the cover plate is covered on the upper surface of the forming box, an air exhaust hole is formed in the cover plate, and the cover plate driving device drives the cover plate to be close to or far away from the forming box; the shaping case includes the shaping piece of four mutual concatenations, and shaping piece drive arrangement and the mould split mechanism that the drive shaping piece removed, the arc wall has on the lateral wall that the shaping piece was laminated each other, and the arc wall intercommunication on the adjacent shaping piece forms the through-hole, the mould split mechanism includes the dwang, the dwang stretches into the shaping incasement portion by the through-hole, the front end of dwang is equipped with oval lug.

2. The vacuum casting and forming device for the high-performance aluminum castings according to claim 1, wherein the mold splitting mechanism further comprises a splitting frame and a synchronous driving mechanism, the rotating rods are evenly and separately arranged along the vertical direction, the rear ends of the rotating rods are rotatably connected with the splitting frame, and the synchronous driving mechanism is arranged at the side of the splitting frame and drives the rotating rods to rotate simultaneously.

3. The vacuum casting and forming device for the high-performance aluminum castings according to claim 2, wherein the synchronous driving mechanism comprises a gear row vertically arranged and slidably connected with the splitting frame, a gear sleeve arranged at the rear end of each rotating rod, and the gear is in meshed connection with the gear row, a first motor arranged on the base, and a power output end of the first motor is connected with the rotating rod positioned at the lowest position.

4. The vacuum casting forming device for the high-performance cast aluminum parts as claimed in claim 1, wherein the forming block is provided with fixing posts protruding upwards on the upper surface thereof, the cover plate comprises a first cover plate and a second cover plate, the first cover plate is provided with first fixing holes at two ends thereof, the second cover plate comprises a connecting plate and fixing plates symmetrically arranged at the lower end of the connecting plate, fixing slots for the first cover plate to be embedded in are formed between the fixing plates, and the fixing plates are provided with second fixing holes.

5. The vacuum casting and forming device for the high-performance cast aluminum parts as claimed in claim 4, wherein the cover plate driving device comprises a first cover plate driving mechanism and a second cover plate driving mechanism, the first cover plate driving mechanism comprises a first upright post, a second motor, a first swing arm and a first driving cylinder, the first upright post is arranged at the side of the forming box, the second motor is arranged on the first upright post, one end of the first swing arm is connected with the power output end of the second motor, the other end of the first swing arm is provided with the first driving cylinder, and the piston rod of the first driving cylinder is connected with the upper end of the first cover plate.

6. The vacuum casting and forming device for the high-performance aluminum castings according to claim 5, wherein the second cover plate driving mechanism comprises a second upright, a third motor, a second swing arm and a second driving cylinder, one end of the second swing arm is rotatably connected with the second upright, the second driving cylinder is mounted at the other end of the second swing arm, the third motor is arranged on the second upright and drives the second swing arm to swing, and a piston rod of the second driving cylinder is connected with the connecting plate.

7. The vacuum casting and forming device for the high-performance aluminum castings according to claim 1, wherein the forming block driving device comprises a third driving cylinder, the third driving cylinder is disposed on the base, and a piston rod of the third driving cylinder is connected with a side wall of the forming block.

8. A casting method based on the high-performance cast aluminum vacuum casting molding device of any one of claims 1 to 7, characterized by comprising the steps of:

(1) splicing the forming blocks together;

(2) introducing liquid gypsum into a liquid storage cavity;

(3) placing the casting sample piece into a forming cavity and covering a cover plate;

(4) pumping the molding cavity to make the molding cavity in a vacuum state;

(5) injecting liquid gypsum into the molding cavity, and forming a gypsum mold after the liquid gypsum is solidified;

(6) the cover plate is separated from the forming blocks, the forming blocks are relatively separated by a small distance, and the gypsum mould is uniformly divided into a plurality of mould components by the mould splitting mechanism;

(7) taking out the casting sample;

(8) fitting the molding blocks again so as to splice the mold components together;

(9) and covering the cover plate, discharging the liquid gypsum in the liquid storage cavity, and injecting the molten metal aluminum into the liquid storage cavity.

(10) Pumping the molding cavity to make the molding cavity in a vacuum state, and injecting molten metal aluminum into the gypsum mold;

(11) after the molten metal is cooled and solidified, the forming blocks are relatively separated by a small distance, and the gypsum mold is separated by a mold splitting mechanism.

(12) And taking out the casting.

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