CN215315516U

CN215315516U - Casting structure of silica sol investment casting

Info

Publication number: CN215315516U
Application number: CN202120768402.1U
Authority: CN
Inventors: 任光良
Original assignee: Chengdu Tiecheng Precision Casting Co ltd
Current assignee: Chengdu Tiecheng Precision Casting Co ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-12-28
Anticipated expiration: 2031-04-15

Abstract

The utility model discloses a casting structure of a silica sol investment casting, which belongs to the technical field of investment casting and comprises a bottom plate, a mold, a cold block, a wax mold and a riser, wherein the upper end of the bottom plate is fixedly provided with four supporting columns, the mold is fixed at the end, far away from the bottom plate, of the four supporting columns, the middle part of the mold is provided with a molding cavity, one side of the molding cavity is connected with the wax mold, the other side of the molding cavity is fixedly connected with a metal sheet, the cold block is positioned at the end, far away from the wax mold, of the metal sheet, both sides of the cold block are fixedly provided with width adjusting assemblies, the other end of the cold block is fixedly provided with a height adjusting assembly, and the riser is positioned at the upper end of the molding cavity; this casting structure sets up cold block in the wax mould corresponds the side, to the thick wall position, can give the lower temperature and cool off fast, guarantees that the casting defect does not appear in the thick wall inside.

Description

Casting structure of silica sol investment casting

Technical Field

The utility model belongs to the technical field of investment casting, and particularly relates to a casting structure of a silica sol investment casting.

Background

Investment casting generally refers to a casting scheme in which a pattern is made of a fusible material, a shell is made of a plurality of layers of refractory materials coated on the surface of the pattern, the pattern is melted and discharged from the shell, and a casting mold without a parting surface is obtained, and the casting mold can be cast after high-temperature roasting. Investment casting is often referred to as "lost wax casting" because patterns are widely made from waxy materials. The shapes of investment castings are generally complex, the minimum diameter of a castable hole on the casting can reach 0.5 mm, and the minimum wall thickness of the casting is 0.3 mm. During production, some parts which are originally formed by combining a plurality of parts can be designed into an integral part by changing the structure of the parts and directly cast by investment casting, so that the processing time and the consumption of metal materials are saved, and the structure of the parts is more reasonable. The investment casting process is complex, is not easy to control, and uses and consumes expensive materials, so that the investment casting process is suitable for producing small parts with complex shapes and high precision requirements, or is difficult to carry out other processing, such as blades of turbine engines and the like. Particularly, for parts with large wall thickness difference, the process is more complex, the thin wall part can be completely filled at higher temperature, and the thick wall part can be ensured not to have casting defects in the thick wall part at lower temperature and by rapid cooling, and the contradiction often causes that the cast blank is not under-cast or has loose and shrinkage cavities in the inner part. The silica sol shell is roasted at the temperature of over 1000 ℃, so that the wax piece cannot be bonded with the chilling block.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a casting structure of a silica sol investment casting, and aims to solve the problems.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a casting structure of silica sol investment casting, this casting structure of silica sol investment casting include bottom plate, mould, cold piece, wax mould, rising head, the bottom plate upper end is fixed with the support column, and the support column is equipped with four altogether, and four support columns are kept away from the bottom plate and are fixed with the mould, and the mould middle part is equipped with into die cavity, and become die cavity one side and connect wax mould, opposite side connection are fixed with sheet metal, and the cold piece is located sheet metal and keeps away from wax mould end, and the cold piece both sides are fixed with width adjusting part, and the other end is fixed with altitude mixture control subassembly, and the rising head is located becomes die cavity upper end.

Preferably, the outside of the cold block is provided with a plurality of condensing pipelines, the upper end and the lower end of each condensing pipeline are provided with fixing rods, the condensing pipelines penetrate through the fixing rods, and one ends of the fixing rods are fixed on the side faces of the metal sheets.

Preferably, the height adjusting assembly comprises an adjusting rod fixed at the end of the cold block far away from the metal sheet, an Contraband-shaped rod fixed on the side surface of the die is arranged outside the adjusting rod, the adjusting rod is slidably connected inside a Contraband-shaped rod, a guide rod is fixed between the inner walls of Contraband-shaped rods, and the adjusting rod is slidably connected with the guide rod.

Preferably, a first adjusting screw is fixed at the bottom of the adjusting rod, the end, far away from the adjusting rod, of the first adjusting screw is in threaded connection with an Contraband-type rod, the end, close to the threaded connection end, of the first adjusting screw extends out of the Contraband-type rod, and a first knob is fixed at the extending end of the first adjusting screw.

Preferably, the width adjusting assembly comprises fixing plates fixed on two sides of the adjusting rod, a second adjusting screw is connected to the fixing plates through threads, a second knob is fixed on the second adjusting screw, the end, far away from the second knob, of the second adjusting screw is hinged to a cold block extension plate, and the end, close to the cold block, of the cold block extension plate is hinged to the cold block.

Preferably, when the two cold block extension plates rotate to be parallel to the front ends of the cold blocks, the width of the two cold block extension plates is consistent with the width of the forming cavity.

The utility model has the beneficial effects that: this casting structure of silica sol investment casting sets up cold block in the wax mould corresponds the side, to the thick wall position, can give the lower temperature and cool off fast, guarantees the inside casting defect that does not appear of thick wall, and when needing the lower temperature to different positions simultaneously, the position of cold block is adjusted to accessible altitude mixture control subassembly and width adjustment subassembly, is applicable to the casting of different shapes.

Drawings

FIG. 1 is a schematic perspective view of the casting structure of a silica sol investment casting provided by the present invention;

FIG. 2 is a schematic top view of FIG. 1 of the casting structure of a silica sol investment casting provided by the present invention;

FIG. 3 is a schematic cross-sectional view A-A of FIG. 2 of the casting structure of a silica sol investment casting provided by the present invention;

FIG. 4 is a schematic internal view of a mold of a casting structure of a silica sol investment casting provided by the present invention;

in the figure: 1. a base plate; 2. a mold; 3. cooling the blocks; 4. wax mold; 5. a riser; 6. a support pillar; 7. a molding cavity; 8. a metal thin plate; 9. a width adjustment assembly; 10. a height adjustment assembly; 11. a condensing duct; 12. fixing the rod; 13. adjusting a rod; 14. contraband type rod; 15. a guide bar; 16. a first adjusting screw; 17. a first knob; 18. a fixing plate; 19. a second adjusting screw; 20. a second knob; 21. a cold block extension plate.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 4 together, the casting structure of the silica sol investment casting according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

This casting structure of silica sol investment casting includes bottom plate 1, mould 2, cold piece 3, wax mould 4, rising head 5, 1 upper end of bottom plate is fixed with support column 6, and support column 6 is equipped with four altogether, and four support columns 6 keep away from that 1 end of bottom plate is fixed with mould 2, and 2 middle parts of mould are equipped with into die cavity 7, become die cavity 7 one side and connect wax mould 4, opposite side connection are fixed with sheet metal 8, and cold piece 3 is located sheet metal 8 and keeps away from wax mould 4 end, and 3 both sides of cold piece are fixed with width adjusting part 9, and the other end is fixed with altitude mixture control subassembly 10, and rising head 5 is located into 7 upper ends in die cavity.

Specifically, cold piece 3 outside is equipped with condensation duct 11, and condensation duct 11 is equipped with a plurality ofly, and both ends are equipped with dead lever 12 from top to bottom, and inside condensation duct 11 worn to establish dead lever 12, dead lever 12 one end was fixed 8 sides of sheet metal.

Specifically, the height adjusting assembly 9 comprises an adjusting rod 13 fixed at the end of the cold block 3 far away from the metal sheet 8, an Contraband-shaped rod 14 fixed on the side surface of the die 2 is arranged outside the adjusting rod 13, the adjusting rod 13 is slidably connected inside the Contraband-shaped rod 14, a guide rod 15 is fixed between the inner walls of the Contraband-shaped rods 14, and the adjusting rod 13 is slidably connected with the guide rod 15.

Specifically, a first adjusting screw 16 is fixed at the bottom of the adjusting rod 13, the end of the first adjusting screw 16, which is far away from the adjusting rod 13, is in threaded connection with the Contraband-shaped rod 14, the end, which is close to the threaded connection end, extends out of the Contraband-shaped rod 14, and a first knob 17 is fixed at the extending end.

Specifically, the width adjusting assembly 9 comprises a fixing plate 18 fixed on two sides of the adjusting rod 13, a second adjusting screw 19 is connected to the fixing plate 18 through threads, a second knob 20 is fixed on the second adjusting screw 19, the end, far away from the second knob 20, of the second adjusting screw 19 is hinged to a cold block extension plate 21, and the end, close to the cold block 3, of the cold block extension plate 21 is hinged to the cold block 3.

Specifically, when the two cold block extension plates 21 are rotated to be parallel to the front end of the cold block 3, the width of the two cold block extension plates is consistent with that of the forming cavity 7.

The working principle of the utility model is as follows: when casting, place wax matrix 4 in shaping chamber 7 one side, open condensation duct 11 simultaneously, reduce cold 3 surface temperature of piece, after reducing, the width of cold 3 front ends is adjusted according to the shape of wax matrix 4, through rotating second knob 20, drive second adjusting screw 19 is inside to be rotated at fixed plate 18, drive cold extension plate 21 along rotating with the pin joint of cold piece 3, increase the supercooling region of wax matrix 4 correspondence department, when needing the nonconformity to the not co-altitude simultaneously, adjustable cold piece 3 is to different heights, rotate first knob 17, drive first adjusting screw 16 and rotate, control regulation pole 13 reciprocates to required position, annotate like the raw materials casting along rising head 5.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a casting structure of silica sol investment casting, its characterized in that, this casting structure of silica sol investment casting includes bottom plate (1), mould (2), cold piece (3), wax matrix (4), rising head (5), bottom plate (1) upper end is fixed with support column (6), and support column (6) are equipped with four altogether, and bottom plate (1) end is fixed with mould (2) is kept away from in four support columns (6), and mould (2) middle part is equipped with into die cavity (7), and become die cavity (7) one side and connect wax matrix (4), opposite side connection are fixed with sheet metal (8), and cold piece (3) are located sheet metal (8) and keep away from wax matrix (4) end, and cold piece (3) both sides are fixed with width adjusting part (9), and the other end is fixed with altitude mixture control subassembly (10), and rising head (5) are located into die cavity (7) upper end.

2. The casting structure of the silica sol investment casting according to claim 1, wherein the outside of the cold block (3) is provided with a plurality of condensation pipes (11), the upper end and the lower end of each condensation pipe (11) are provided with fixing rods (12), the condensation pipes (11) are arranged in the fixing rods (12) in a penetrating manner, and one ends of the fixing rods (12) are fixed on the side surface of the metal sheet (8).

3. The casting structure of the silica sol investment casting according to claim 1, wherein the height adjusting assembly (10) comprises an adjusting rod (13) fixed at the end of the cold block (3) far away from the metal sheet (8), an Contraband-type rod (14) fixed at the side of the mold (2) is arranged outside the adjusting rod (13), the adjusting rod (13) is slidably connected inside the Contraband-type rod (14), a guide rod (15) is fixed between the inner walls of the Contraband-type rod (14), and the adjusting rod (13) is slidably connected with the guide rod (15).

4. The casting structure of the silica sol investment casting according to claim 3, wherein a first adjusting screw (16) is fixed at the bottom of the adjusting rod (13), the end of the first adjusting screw (16) far away from the adjusting rod (13) is in threaded connection with the Contraband-type rod (14), the end near the threaded connection end extends out of the Contraband-type rod (14), and the extending end is fixed with a first knob (17).

5. The casting structure of the silica sol investment casting according to claim 3, wherein the width adjusting assembly (9) comprises fixing plates (18) fixed on both sides of the adjusting rod (13), a second adjusting screw (19) is connected to the inner portion of the fixing plates (18) in a threaded manner, a second knob (20) is fixed on the second adjusting screw (19), a cold block extension plate (21) is hinged to the end of the second adjusting screw (19) far away from the second knob (20), and the end of the cold block extension plate (21) close to the cold block (3) is hinged to the cold block (3).

6. Casting structure of silica sol investment castings according to claim 5, characterized in that the two cold block extension plates (21) have a width corresponding to the width of the forming cavity (7) when rotated to be parallel to the front end of the cold block (3).