CN117600403A - Forming device for die production and die static pressure precision pouring method - Google Patents

Abstract

The utility model discloses a forming device for die production and a die static pressure precision pouring method, which comprises a cope flask and a drag flask, wherein a cavity formed between the cope flask and the drag flask is used for placing a die, the die comprises an upper die and a lower die, and a first forming part for forming a diversion trench and a plurality of first moulds for forming a first placing trench are arranged at the bottom of the drag flask; the bottom of the cope flask is placed with two second molding members for forming the connecting grooves, one third molding member for forming the pouring holes, and a plurality of second molds for forming the second placing grooves. According to the utility model, the upper die and the lower die of the die are formed by pouring the precoated sand into the forming die, the volume of the precoated sand is obviously reduced, the strength is increased, the automatic static pressure casting line on the precoated sand box body is molded, the precoated sand is embedded into the black sand, the positioning is accurate, the automatic casting can be performed by using an automatic line casting ladle, and the size precision of the product is favorably controlled because the black sand is tightly pressed and has large pressure, and the precoated sand cannot crack or expand.

Description

Forming device for die production and die static pressure precision pouring method

Technical Field

The utility model relates to the technical field of die processing, in particular to a forming device for die production and a die static pressure precision pouring method.

Background

In the glass mold industry, the production of glass mold copper alloy dies typically uses precoated sand molding. Because the existing precoated sand molding die is large in size, the precoated sand box is easy to crack, multiple byproducts can be cast at the same time, but the dimensional accuracy of products cannot be controlled, and the casting is performed by manual ladle casting, so that time and labor are wasted, the cast products have fleshy phenomena, casting blanks are poor in accuracy, large in allowance and high in rejection rate, the upper part and the lower part of the sand box are difficult to compress due to large size, copper water can flow out from gaps in the sand box inevitably, copper water is wasted, and precious metals such as copper alloy are not high in profit rate and production efficiency.

The utility model patent with the application number of 2018219542246 discloses a molding die of a modular precoated sand shell, which adopts a modular design, wherein a lower box male die and a lower box female die, an upper box male die and an upper box female die are respectively matched, and the production period can be greatly shortened and the die opening cost is reduced by more than 90% through a male die module and a female die module which are matched internally.

Disclosure of Invention

The utility model aims to solve the problems, designs a forming device for die production and a die static pressure precision pouring method, and solves the problems that the die after forming is inaccurate in size, excessive in allowance, required to be increased in machining procedures and the like due to the fact that the size of a precoated sand cavity is too large.

The forming device for producing the die comprises a cope flask and a drag flask, wherein a cavity formed between the cope flask and the drag flask is used for placing a die, the die comprises an upper die and a lower die, a first forming part for forming a diversion trench and a plurality of first moulds for forming first placing grooves are arranged at the bottom of the drag flask, and the first placing grooves are used for placing a lower die of the die;

the bottom of the cope flask is provided with two second forming pieces for forming connecting grooves, a third forming piece for forming pouring holes and a plurality of second moulds for forming second placing grooves, the connecting grooves are used for connecting the diversion grooves and the first placing grooves, and the second placing grooves are used for placing an upper die of a die set;

black sand for fixing the die is filled in the cope flask and the drag flask, and one surface of the cope flask with the second placing groove is buckled with one surface of the drag flask with the first placing groove up and down;

one side of the first die is provided with a forming block for forming a drainage groove, and the middle of the upper part of the second die is provided with a forming cylinder for forming an air outlet hole.

Further, the first molding member is disposed at a middle position of the drag flask, the first molding member includes a main body portion and guide portions extending outward from both sides thereof to form guide grooves, and the guide portions are wedge-shaped.

Further, the third molding member is placed in the middle of the cope flask, and the two second molding members are located on both sides of the third molding member, respectively, and correspond to the positions of the molding blocks on the first mold.

Further, the shape of the upper part of the second die is matched with that of the upper die of the die, and positioning blocks for forming positioning grooves are arranged at two ends of the upper part of the second die.

Further, the bottoms of the cope flask and the drag flask are provided with a bottom plate, and the first mold, the first molding member, the second molding member, and the third molding member are placed on the bottom plate.

The forming die comprises a female die and a male die, wherein the female die is provided with at least two first mounting grooves for placing the dies and at least two second mounting grooves, a bulge for forming an air outlet hole on the upper die is arranged between the two adjacent second mounting grooves, the female die matched with the shape of the lower die is placed in the first mounting groove, and the male die for forming an inner cavity structure of the upper die is placed in the second mounting groove;

the bottom of the male die is provided with a plurality of grooves matched with the female die and the male die, and a cavity matched with the shapes of the upper die and the lower die is formed between the female die and the male die.

Further, the bottom of master model is provided with down the fixed plate, the relevant position on the fixed plate down sets up a plurality of locating pins that alternate to first mounting groove and second mounting groove, the bottom of public mould is provided with and master model matched with reference column.

Further, the top of public mould is provided with the pressure strip, be provided with on the pressure strip a plurality of with the exhaust hole that the position of terrace die and die corresponds, and all be provided with the sprue in every exhaust hole, the top of pressure strip is provided with the fixed plate, the bottom of going up the fixed plate is provided with a plurality of lifters that are used for preventing the sprue roll-off exhaust hole.

Further, at least one pouring hole is formed in the pressing plate, a plurality of support columns are arranged at the bottom of the upper fixing plate, and the length of each support column is larger than that of the ejector pin.

The utility model also provides a static pressure precision casting method of the die, which comprises the following steps:

firstly, pouring precoated sand into a die, and heating to solidify the precoated sand to obtain an upper die and a lower die of the die;

secondly, placing a forming module for forming a positioning groove, a molten copper runner, a pouring hole and an air outlet hole into a cope flask and a drag flask, filling black sand into the flasks and compacting the black sand;

thirdly, placing the lower die into a positioning groove formed in black sand in the lower sand box, then placing the upper die on the lower die in a back-off manner, and then buckling and compacting the upper sand box and the lower sand box up and down, so that the upper die is embedded into the positioning groove formed in the black sand in the upper sand box;

fourthly, respectively placing the upper die and the lower die into positioning grooves formed in black sand in the upper sand box and the lower sand box, and fastening and compacting the upper sand box and the lower sand box up and down;

pouring molten copper into the pouring hole, and enabling the molten copper to enter a cavity formed between the upper die and the lower die through a molten copper flow channel;

and sixthly, demolding after the copper water is cooled and solidified to obtain the die blank.

Compared with the prior art, the beneficial effects are that:

according to the utility model, the upper die and the lower die of the die are formed by pouring the precoated sand into the forming die, the volume of the precoated sand is obviously reduced, the strength is increased, the sizes of all parts basically meet the requirements of finished products, various placing grooves and grooves for copper water to flow through are formed in the black sand in the upper sand box and the lower sand box through the first die, the second die and the three forming parts, then the upper die and the lower die are embedded into the placing grooves in the upper sand box and the lower sand box, the positioning is accurate, the upper die and the lower die are buckled and butted, finally, the copper water enters into a cavity formed between the upper die and the lower die along the diversion groove and the like during pouring, so that the die is formed, the labor intensity of workers is greatly reduced, the phenomenon of cracking or sand expanding and the like can not occur in the precoated sand due to the large tight pressure in the black sand, the dimensional accuracy of the products is favorably controlled, the upper die and the lower die can be also buckled and placed, the copper water flows out along the gaps, the same by 20% copper water can be reduced, the weight of a blank is reduced, the subsequent processing step of the die is realized, and the die is formed, and the purpose of reducing the die is achieved, and the subsequent processing effect is achieved.

Drawings

FIG. 1 is a schematic view of a flask according to embodiment 1 of the present utility model;

FIG. 2 is a schematic structural view of the respective structures formed on the black sand in the flask in example 1;

FIG. 3 is a schematic view of the structure after placement of the upper and lower molds on the basis of FIG. 2;

FIG. 4 is a schematic view showing the structure of example 1 after the cope flask and the drag flask are snapped together;

fig. 5 is a schematic structural view of the first die in embodiment 1.

Fig. 6 is a schematic structural view of the first molded article in embodiment 1;

FIG. 7 is a schematic view of the structure of a second die in example 1;

FIG. 8 is a schematic view of the structure of the upper and lower dies of the die mold;

fig. 9 is an exploded view of the molding die of example 1;

FIG. 10 is a schematic view of the structure of a master mold in a molding die;

FIG. 11 is a schematic view of the structure of a male mold in a molding die;

fig. 12 is a schematic view of the structure of the hold-down plate in the molding die.

In the figure, 1, a drag flask; 2. a cope flask; 3. a first die; 31. molding blocks; 4. a first molding member; 41. a main body portion; 42. a flow guiding part; 5. a second die; 51. forming a cylinder; 52. a positioning block; 6. a third molding member; 7. a second molding member; 8. a bottom plate; 9. black sand; 91. an air outlet hole; 92. pouring holes; 901. a first placement groove; 902. a second placement groove; 903. a diversion trench; 904. drainage grooves; 905. a connecting groove; 10. a master mold; 101. a first mounting groove; 102. a second mounting groove; 103. a protrusion; 104. a special-shaped bulge; 11. a male mold; 111. a profile groove; 112. pouring holes; 12. a lower fixing plate; 13. a compacting plate; 131. an exhaust hole; 14. an upper fixing plate; 15. a female die; 16. a male die; 17. a positioning pin; 18. a support column; 19. a knock pin; 20. blocking; 21. a lower die; 22. and (5) upper die.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 4, 8 and 9, a preferred embodiment of the present utility model provides a molding apparatus for producing a die, which mainly comprises two parts, a molding die and a flask, wherein the molding die is used for producing a die, the die is composed of an upper die 22 and a lower die 21, the upper die 22 and the lower die 21 are folded together, a cavity which is consistent with the shape of the die is formed in the middle, and the die can be obtained by pouring copper water into the inside;

referring to fig. 9, 10 and 11, the molding die mainly comprises a male die 11, a female die 10, a lower fixing plate 12, a compacting plate 13 and an upper fixing plate 14, wherein the male die 11 is positioned above the female die 10, four first placing grooves 901 and four second placing grooves 902 are arranged on the female die 10, a female die 15 is arranged in each first placing groove 901, a male die 16 is arranged in each second placing groove 902, each two female dies 15 is in a group, each two male dies 16 is in a group, two cavities for forming a mouth die are respectively arranged on the upper die 22 and the lower die 21 formed in this way, a plurality of grooves 111 matched with the female dies 15 and the male dies 16 are also arranged at the bottom of the male die 11, a T-shaped bulge 103 is arranged between the two second installing grooves 102 of each group of female dies 15 on the female die 10, the bulge 103 is used for forming an exhaust hole 131 on the upper die 22, the exhaust hole 131 can be outwards exhausted through the exhaust hole 131 during copper water pouring, and simultaneously, the liquid flow front mixed film or oxide liquid on the casting can be collected to reduce the defects;

when the female mold 10 and the male mold 11 are closed, a closed cavity is formed between the female mold 15, the male mold 16 and the mold groove 111 at the bottom of the male mold 11 on the female mold 10, the shape of the cavity is consistent with the shape of the upper mold 22 and the lower mold 21 to be formed, and the cavity is used for forming the upper mold 22 and the lower mold 21, wherein the female mold 15 is matched with the corresponding mold groove 111 to form the lower mold 21, and the male mold 16 is matched with the corresponding mold groove 111 to form the upper mold 22.

Referring to fig. 9, the lower fixing plate 12 is located below the female die 10, a plurality of ejector pins 17 are disposed on the lower fixing plate 12, and the plurality of ejector pins 17 are respectively inserted into the corresponding first mounting groove 101 and second mounting groove 102, when the female die 15 and the male die 16 are placed in the first mounting groove 101 and the second mounting groove 102, the upper ends of the ejector pins 17 penetrate through the female die 15 and the male die 16, and the upper end surfaces of the ejector pins 17 are flush with the surfaces of the female die 15 and the male die 16, so as to play a role in positioning, prevent the female die 15 and the male die 16 from moving randomly, then fix the female die 15 and the male die 16 on the female die 10 through screws, the shapes of the female die 15 and the male die 16 are matched with the shapes of the final formed dies, and different female die 15 and male die 16 can be replaced according to the shapes of the dies, so that the die opening cost is saved; the ejector pin 17 has two functions, namely, the female die 15 and the male die 16 are positioned, and the ejector pin 17 can be driven to move upwards by the upper moving lower fixing plate 12 after the upper die 22 and the lower die 21 are molded, so that the upper die 22 and the lower die 21 are ejected upwards, and demolding is realized.

In order to ensure that the male die 11 and the female die 10 are buckled up and down accurately, positioning columns are respectively arranged at four corners of the bottom of the male die 11, positioning holes are respectively arranged at four corresponding corners of the female die 10, and the male die 11 and the female die 10 are buckled accurately by inserting the positioning columns into the corresponding positioning holes, so that the accuracy of the size of a formed cavity is ensured.

As shown in fig. 9 and 12, the above-mentioned compressing plate 13 is disposed on the male mold 11, the upper fixing plate 14 is disposed above the compressing plate 13, a plurality of filling holes 112 are disposed on the male mold 11, a plurality of air discharging holes 131 corresponding to the filling holes 112 on the male mold 11 are disposed on the compressing plate 13, the positions of the filling holes 112 correspond to the positions of the male mold 16 and the female mold 15, a block 20 is disposed in each air discharging hole 131 on the compressing plate 13, a plurality of supporting columns 18 and a plurality of positioning pins 19 corresponding to the air discharging holes 131 on the compressing plate 13 are disposed at the bottom of the upper fixing plate 14, the length of the positioning pins 19 is smaller than the length of the supporting columns 18, but not too short, so that after the upper fixing plate 14 is disposed on the compressing plate 13, the positioning pins 19 can block the block 20 in the air discharging holes 131, thereby preventing the air discharging holes 131 from being punched out of the block 20, and initially covering the cavity formed between the male mold 11 and the female mold 10 through the plurality of filling holes 112, then pressing the compressing plate 13 on the male mold 11, and curing the air corresponding to the air discharging holes 131 one by one.

A plurality of rubber pads are further arranged at the bottom of the compacting plate 13 to prevent the compacting plate 13 from crushing the male die 11; the female die 10 is provided with cylinders for forming positioning holes at two ends of each group of female dies 15, and round grooves for forming positioning columns are formed at two ends of each group of male dies 16, so that corresponding positioning columns and positioning grooves can be formed at the bottoms of the upper die 22 and the lower die 21 which are finally formed, the upper die 22 and the lower die 21 can be accurately buckled and butted, and a special-shaped protrusion 104 is arranged between four first mounting grooves 101 of the female die 10 and used for forming a small groove for copper water to enter on the lower die 21.

Referring to fig. 1 to 3, the upper mold 22 and the lower mold 21 are formed for the molding of the neck mold, and then the upper mold 22 and the lower mold 21 are respectively fixed by a flask, wherein the flask mainly comprises two parts of a cope flask 2 and a drag flask 1, a bottom plate 8 is respectively provided at the bottoms of the cope flask 2 and the drag flask 1, four second molds 5, two second molding members 7 and one third molding member 6 are placed on the bottom plate 8 of the cope flask 2, the four second molding members 5 are placed in a rectangular shape, the third molding member 6 is positioned in the middle of the four second molds 5, the two second molding members 7 are positioned at both ends of the third molding member 6, and both ends of the second molding members 7 are respectively directed to the two second molds 5, the second molding members 7 are shaped like a "concave" and are used for forming a connecting groove 905, the bottom of the third molding member 6 is shaped like a square, and the upper part is a molding cylinder 51 formed by protruding upward for forming a pouring hole 92;

referring to fig. 7, the shape of the upper portion of the second mold 5 is matched with the shape of the upper mold 22 of the die, and positioning blocks 52 for forming positioning grooves are provided at both ends of the upper portion of the second mold 5, so that the upper mold 22 can be accurately positioned after being placed in the second placement groove 902; a molding cylinder 51 for forming the air outlet hole 91 is provided in the middle of the upper portion of the second die 5.

Referring to fig. 1, 5 and 6, four first molds 3 and one first molding member 4 are placed on the bottom plate 8 of the drag flask 1, the four first molds 3 are also placed in a rectangular shape, the first molding member 4 is located in the middle of the four first molds 3, and a molding block 31 extending outward is provided at one side of the four first molds 3 for forming the drainage groove 904; the first molding member 4 includes a main body 41 and guide portions 42 extending outward from both sides thereof to form guide grooves 903, the guide portions 42 are wedge-shaped, and the remaining spaces of the cope flask 2 and the drag flask 1 are filled with black sand 9, so that various grooves can be formed in the black sand 9, after the cope flask 2 is fastened to the drag flask 1, the guide grooves 903 and the drainage grooves 904 can be connected by the connecting grooves 905 on the cope flask 2, and the copper water enters the guide grooves 903 from the pouring holes 92 on the cope flask 2, flows into the positions of the connecting grooves 905 along both ends of the guide grooves 903, and then flows into the drainage grooves 904.

After the black sand 9 is filled, the compacting plates are needed to be compacted, then the cope flask 2 and the drag flask 1 can be reversely buckled and the bottom plate 8 is removed, meanwhile, various modules are taken out, various grooves are formed, then the lower die 21 is sequentially placed in the first placing groove 901 on the drag flask 1, the cope 22 is sequentially placed in the second placing groove 902 on the cope flask 2, then the cope flask 2 is turned over by 180 degrees and reversely buckled on the drag flask 1, so that the cope 22 and the lower die 21 can be accurately buckled and butted, a cavity is formed between the cope 22 and the lower die 21, and finally molten copper can enter the cavity between the cope 22 and the lower die 21 along the drainage groove 904, and finally a die is formed.

In the prior art, the upper die 22, the lower die 21 and the sand box are all made of precoated sand, the size is larger, deviation is easy to generate after the upper die 22, the lower die 21 and the sand box are buckled together, the molding quality of the die is affected, the die is further required to be processed for multiple times after being molded, time and labor are wasted, the upper die 22 and the lower die 21 are manufactured through separate dies, the size is greatly reduced, the strength is increased, the upper die 22 and the lower die 21 are tightly pressed through the sand box and the black sand 9, the stress of the upper die 22 and the lower die 21 is more uniform, the butt joint is more stable, the phenomena of deviation and the like can not occur, the sizes of all parts basically meet the requirements of finished products, the molded die structure is basically clear, and the subsequent processing procedures are greatly reduced.

Example 2

The utility model also provides a static pressure precision casting method of the die, which comprises the following steps:

the first step, pouring precoated sand into a forming die, heating and solidifying the precoated sand, and processing an upper die 22 and a lower die 21 of an outlet die by using the forming die, wherein the upper die 22 and the lower die 21 are used for final forming of the die, the processed upper die 22 and lower die 21 have smaller volumes and increased strength;

a second step of placing the first molding member 4 and the first pattern mold 3 on the bottom plate 8 in the drag flask 1, placing the second molding member 7, the third molding member 6 and the second pattern mold 5 on the bottom plate 8 in the cope flask 2, and filling the black sand 9 in the cope flask 2 and the drag flask 1, and compacting the black sand 9 in the box body to form various positioning grooves and copper flow passages (including the first placement groove 901, the second placement groove 902, the flow guide groove 903, the connection groove 905, the drainage groove 904, the pouring hole 92, the air outlet hole 91, and the like) in the black sand 9;

turning over the cope flask 2 and the drag flask 1, taking down the bottom plate 8, and taking out the first molding member 4, the second molding member 7, the third molding member 6, the first die 3, the second die 5 and other modules;

fourth, sequentially placing the lower dies 21 of the neck mold dies into four first placing grooves 901 in the drag flask 1, and sequentially reversely buckling the upper dies 22 on the corresponding lower dies 21;

fifthly, turning the cope flask 2 over 180 degrees, reversely buckling the cope flask 2 on the drag flask 1 and compacting the drag flask, so that the upper die 22 and the lower die 21 can be accurately abutted, the upper die can be embedded into four second placing grooves 902 in the cope flask 2, then copper water is poured into a cavity formed between the cope flask 2 and the drag flask 1 through pouring holes 92, the water enters into a diversion groove 903 along the pouring holes 92, then enters into a connecting groove 905 along two ends of the diversion groove 903 and enters into a diversion groove 904 along the connecting groove 905, finally enters into a cavity formed between the upper die 22 and the lower die 21, high-temperature heated and expanded gas in the cavity can be discharged along a gas outlet hole 91, and meanwhile, molten metal with inclusions or oxide films mixed at the front of liquid flow can be collected through the gas outlet hole 91, so that defects on castings are reduced;

and sixthly, after waiting for copper water cooling, the cope flask 2, the drag flask 1, the upper die 22 and the lower die 21 are disassembled to obtain a die blank, and the die ingredients are connected together through two parts of the die, so that the middle connected part is needed to be sawed off, and finally the die is obtained.

The above technical solution only represents the preferred technical solution of the present utility model, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present utility model, and the technical solution falls within the scope of the present utility model.

Claims (10)

1. The forming device for the production of the die comprises a cope flask (2) and a drag flask (1), wherein a cavity formed between the cope flask (2) and the drag flask (1) is used for placing a die, the die comprises an upper die (22) and a lower die (21), and the forming device is characterized in that a first forming part (4) for forming a diversion trench (903) and a plurality of first moulds (3) for forming a first placing groove (901) are arranged at the bottom of the drag flask (1), and the first placing groove (901) is used for placing the lower die (21) of the die;

two second molding pieces (7) for forming connecting grooves (905), one third molding piece (6) for forming pouring holes (92) and a plurality of second molds (5) for forming second placing grooves (902) are arranged at the bottom of the cope flask (2), the connecting grooves (905) are used for connecting the guide grooves (903) and the first placing grooves (901), and the second placing grooves (902) are used for placing an upper mold (22) of a mouth mold;

black sand (9) for fixing the die is filled in the cope flask (2) and the drag flask (1), and one surface of the cope flask (2) with the second placing groove (902) is buckled with one surface of the drag flask (1) with the first placing groove (901) up and down;

wherein one side of the first die (3) is provided with a forming block (31) for forming a drainage groove (904), and the middle of the upper part of the second die (5) is provided with a forming cylinder (51) for forming an air outlet hole (91).

2. The forming device for die production according to claim 1, wherein the first forming member (4) is placed at an intermediate position of the drag flask (1), the first forming member (4) includes a main body portion (41) and guide portions (42) extending outward from both sides thereof for forming the guide groove (903), and the guide portions (42) are wedge-shaped in shape.

3. The forming device for die production according to claim 1, wherein the third forming member (6) is placed in the middle of the cope flask (2), and the two second forming members (7) are located on both sides of the third forming member (6) respectively and correspond to the positions of the forming blocks (31) on the first die (3).

4. The die production molding apparatus as claimed in claim 1, wherein the shape of the upper portion of the second die (5) matches the shape of the upper die (22) of the die, and positioning blocks (52) for forming positioning grooves are provided at both ends of the upper portion of the second die (5).

5. The forming device for die production according to any one of claims 1 to 4, wherein the bottoms of the cope flask (2) and the drag flask (1) are provided with a bottom plate (8), and the first mold (3), the first forming member (4), the second mold (5), the second forming member (7), and the third forming member (6) are placed on the bottom plate (8).

6. The forming device for producing the die according to claim 1, further comprising a forming die for forming an upper die (22) and a lower die (21) of the die, wherein the forming die comprises a female die (10) and a male die (11), wherein at least two first mounting grooves (101) for placing the die and at least two second mounting grooves (102) are arranged on the female die (10), a bulge (103) for forming an air outlet hole (91) on the upper die (22) is arranged between the two adjacent second mounting grooves (102), a female die (15) matched with the shape of the lower die (21) is arranged in the first mounting groove (101), and a male die (16) for forming a cavity structure inside the upper die (22) is arranged in the second mounting groove (102);

the bottom of the male die (11) is provided with a plurality of grooves (111) matched with the female die (15) and the male die (16), and a cavity matched with the shapes of the upper die (22) and the lower die (21) is formed between the female die (10) and the male die (11).

7. The forming device for die production according to claim 6, wherein a lower fixing plate (12) is arranged at the bottom of the female die (10), a plurality of ejector pins (17) penetrating into the first mounting groove (101) and the second mounting groove (102) are arranged at corresponding positions on the lower fixing plate (12), and positioning columns matched with the female die (10) are arranged at the bottom of the male die (11).

8. The forming device for die production according to claim 6, wherein a compacting plate (13) is arranged at the top of the male die (11), a plurality of vent holes (131) corresponding to the positions of the male die (16) and the female die (15) are arranged on the compacting plate (13), a blocking block (20) is arranged in each vent hole (131), an upper fixing plate (14) is arranged above the compacting plate (13), and a plurality of positioning pins (19) for preventing the blocking block (20) from sliding out of the vent holes (131) are arranged at the bottom of the upper fixing plate (14).

9. The die production molding device according to claim 8, wherein the pressing plate (13) is provided with at least one pouring hole (112), the bottom of the upper fixing plate (14) is provided with a plurality of support columns (18), and the length of the support columns (18) is greater than the length of the positioning pins (19).

10. The static pressure precision casting method of the die is characterized by comprising the following steps of:

firstly, pouring precoated sand into a die, and heating to solidify the precoated sand to obtain an upper die (22) and a lower die (21) of the die;

secondly, putting a forming module for forming a positioning groove, a molten copper runner, a pouring hole (92) and an air outlet hole (91) into a cope flask (1) and a drag flask (2), filling black sand (9) into the flasks and compacting the black sand (9);

turning over the cope flask (1) and the drag flask (2) and taking out the forming module, wherein a copper liquid flow channel and a positioning groove for positioning the lower die (21) are formed on the surface of the black sand (9) in the cope flask (1), and a copper liquid flow channel, a pouring hole (92) and an air outlet hole (91) which are vertically communicated and a positioning groove for positioning the upper die (22) are formed on the surface of the black sand (9) in the cope flask (2);

fourthly, placing the lower die (21) into a positioning groove formed in the black sand (9) in the lower sand box (2), then reversely buckling the upper die (22) on the lower die (21), and then buckling and compacting the upper sand box (1) and the lower sand box (2) up and down, so that the upper die (22) is embedded into the positioning groove formed in the black sand (9) in the upper sand box (1);

pouring copper water into the pouring hole (92), and enabling the copper water to enter a cavity formed between the upper die (22) and the lower die (21) through a copper liquid channel;

and sixthly, demolding after the copper water is cooled and solidified to obtain the die blank.