Combined sand core mold for casting aerospace cabin shell through aluminum alloy

Abstract

The utility model relates to the technical field of sand core molds, in particular to a combined sand core mold of an aluminum alloy casting spaceflight cabin shell, which is characterized in that a mold groove is arranged in a bottom mold, a liftable base is arranged at the bottom of the mold groove, a bottom plate is fixedly arranged below the bottom mold, a guide block and a moving block are symmetrically arranged at the bottom of the base, and the bottom of the bottom plate is provided with a movable block. Guide rods and screw rods are symmetrically arranged at the lower end of the bottom die, the guide rods penetrate through the guide blocks, the screw rods penetrate through the moving blocks, the top ends of the screw rods are rotationally connected with the bottom die, after material shaping is completed, the top die ascends, then the motor is started, the screw rods can rotate, and the moving blocks can ascend along the screw rods at the moment; and therefore, the base can ascend in the die cavity, the shaped aluminum alloy workpiece can be ejected out of the die cavity, and the workpiece can be very convenient to take.

Description

Technical Field

[0001] The utility model relates to the technical field of sand core moulds, in particular to a combined sand core mould for casting a space capsule shell with aluminium alloy. Background Art

[0002] As we all know, aluminum alloys are widely used in aerospace engineering, especially in the material selection of spacecraft shells. The light weight and high strength of aluminum alloys, as well as their good thermal conductivity and corrosion resistance, make them an ideal choice for manufacturing spacecraft shells. In the production process of aluminum alloy casting spacecraft shells, combined sand core molds are required. Combined sand core molds are usually composed of top molds and bottom molds.

[0003] When the existing sand core mold is in use, the workpiece is easily adhered to the mold groove on the bottom mold, and it is difficult to remove the workpiece from the mold groove, which makes it very inconvenient to remove the workpiece. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides a combined sand core mold for casting an aerospace capsule shell with an aluminum alloy.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined sand core mold for casting a space capsule shell with an aluminum alloy, comprising a bottom mold and a top mold, wherein the top mold is located above the bottom mold, a lifter is fixedly arranged at the rear end of the bottom mold, and an output end of the lifter is provided with a lift rod connected to the top mold, a mold groove is arranged inside the bottom mold, and a liftable base is arranged at the bottom of the mold groove, a bottom plate is fixedly arranged below the bottom mold, a guide block and a moving block are symmetrically arranged at the bottom of the base, a guide rod and a screw are symmetrically arranged at the lower end of the bottom mold, the guide rod passes through the guide block, the screw passes through the moving block, and the top end of the screw is rotatably connected to the bottom mold, the screw is threadedly connected to the moving block, and a motor is arranged at the upper end of the bottom plate, and the output end of the motor is connected to the bottom end of the screw.

[0008] Furthermore, the present invention is improved in that the motor is a servo motor.

[0009] Furthermore, the present invention is improved in that a sealing ring is provided on the peripheral side of the base.

[0010] In order to facilitate fixing the position of the base, the utility model has the following improvements: a fixing seat is fixedly arranged at the upper end of the bottom plate, a spring is provided inside the fixing seat, a fixing plate is fixedly arranged at the lower end of the base, and a buffer rod is provided at the lower end of the fixing plate which is inserted into the fixing seat and connected to the top end of the spring.

[0011] Furthermore, the utility model is improved in that a limit seat is fixedly provided on the top end of the fixing seat, and a plurality of supporting rods are provided on the lower end of the fixing plate.

[0012] Furthermore, the improvement of the utility model is that the fixing plate is fixed to the lower end of the base by screws.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a combined sand core mold for casting an aerospace capsule shell with an aluminum alloy, which has the following beneficial effects:

[0015] The combined sand core mold for casting the outer shell of the aluminum alloy space capsule can raise the top mold after the material is shaped, and then start the motor to rotate the screw. At this time, the moving block will rise along the screw, and then the base can rise in the mold groove, and the shaped aluminum alloy workpiece can be ejected in the mold groove, avoiding the shaped workpiece from sticking to the inside of the mold groove, which makes it very convenient to take the workpiece out. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model Figure 3 ;

[0019] Figure 4 This is a schematic diagram of the internal structure of the fixing seat in the utility model;

[0020] In the figure: 1. bottom mold; 2. top mold; 3. mold groove; 4. base; 5. lifter; 6. lifting rod; 7. bottom plate; 8. fixed seat; 9. buffer rod; 10. fixed plate; 11. support rod; 12. guide block; 13. guide rod; 14. moving block; 15. screw; 16. motor; 17. limit seat. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4The utility model discloses a combined sand core mold for casting a space capsule shell of an aluminum alloy, comprising a bottom mold 1 and a top mold 2, wherein the top mold 2 is located above the bottom mold 1, a lifter 5 is fixedly arranged at the rear end of the bottom mold 1, and a lifter 6 connected to the top mold 2 is arranged at the output end of the lifter 5, a mold groove 3 is arranged inside the bottom mold 1, and a liftable base 4 is arranged at the bottom of the mold groove 3, a bottom plate 7 is fixedly arranged below the bottom mold 1, a guide block 12 and a moving block 14 are symmetrically arranged at the bottom of the base 4, a guide rod 13 and a screw 15 are symmetrically arranged at the lower end of the bottom mold 1, the guide rod 13 passes through the guide block 12, the screw 15 passes through the moving block 14, and the The top end of the screw 15 is rotatably connected to the bottom mold 1, and the screw 15 is threadedly connected to the moving block 14. A motor 16 is provided at the upper end of the bottom plate 7, and the output end of the motor 16 is connected to the bottom end of the screw 15. In this structure, starting the lifter 5 can make the top mold 2 rise and fall on the bottom mold 1, and the material can be cooled and shaped in the mold groove 3. When the material is shaped, the top mold 2 is raised, and then the motor 16 is started to rotate the screw 15. At this time, the moving block 14 will rise along the screw 15, and then the base 4 can rise in the mold groove 3, and the shaped aluminum alloy workpiece can be ejected in the mold groove 3, avoiding the shaped workpiece from sticking to the inside of the mold groove 3, which can make the workpiece very convenient when taking out the material.

[0023] Furthermore, the motor 16 can be a servo motor 16 .

[0024] Furthermore, a sealing ring is provided on the circumference of the base 4 . When the base 4 rises, the sealing ring will be squeezed to ensure the sealing of the base 4 .

[0025] After the base 4 is reset, it is inconvenient to fix the position of the base 4 due to the lack of a limiting structure. A fixing seat 8 is fixedly arranged at the upper end of the bottom plate 7, and a spring is arranged inside the fixing seat 8. A fixing plate 10 is fixedly arranged at the lower end of the base 4. A buffer rod 9 is arranged at the lower end of the fixing plate 10, which is inserted into the fixing seat 8 and connected to the top of the spring. A limiting seat 17 is fixedly arranged at the top of the fixing seat 8, and a plurality of support rods 11 are arranged at the lower end of the fixing plate 10. When the base 4 is in the process of descending, the buffer rod 9 will compress the spring in the fixing seat 8, which can provide a buffering effect for the base 4 in the process of descending. As the base 4 is lowered, the support rod 11 will finally contact the limiting seat 17, which can provide a limiting structure for the base 4 in the process of resetting, and can make the position of the base 4 more accurate after resetting.

[0026] Furthermore, the fixing plate 10 is fixed to the lower end of the base 4 by screws, and the screw fixing method can make the fixing plate 10 easy to assemble.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite sand core mold for casting a space capsule shell of an aluminum alloy, comprising a bottom mold (1) and a top mold (2), wherein the top mold (2) is located above the bottom mold (1), a lifter (5) is fixedly arranged at the rear end of the bottom mold (1), and a lifter (6) connected to the top mold (2) is arranged at the output end of the lifter (5), wherein the lifter (6) is characterized in that: The bottom mold (1) is provided with a mold groove (3) inside, and a base (4) capable of being raised and lowered is provided at the bottom of the mold groove (3). A bottom plate (7) is fixedly provided below the bottom mold (1), and a guide block (12) and a moving block (14) are symmetrically provided at the bottom of the base (4). A guide rod (13) and a screw rod (15) are symmetrically provided at the lower end of the bottom mold (1), and the guide rod (13) passes through the guide block (12), and the screw rod (15) passes through the moving block (14), and the top end of the screw rod (15) is rotatably connected to the bottom mold (1), and the screw rod (15) is threadedly connected to the moving block (14). A motor (16) is provided at the upper end of the bottom plate (7), and the output end of the motor (16) is connected to the bottom end of the screw rod (15).

2. The combined sand core mold for casting an aerospace capsule shell of an aluminum alloy according to claim 1, characterized in that: The motor (16) is a servo motor (16).

3. The combined sand core mold for casting the outer shell of an aluminum alloy spacecraft according to claim 2, characterized in that: A sealing ring is provided on the peripheral side of the base (4).

4. The combined sand core mold for casting an aerospace capsule shell of an aluminum alloy according to claim 3, characterized in that: A fixing seat (8) is fixedly arranged at the upper end of the bottom plate (7), a spring is arranged inside the fixing seat (8), a fixing plate (10) is fixedly arranged at the lower end of the base (4), and a buffer rod (9) is arranged at the lower end of the fixing plate (10) which is inserted into the fixing seat (8) and connected to the top end of the spring.

5. The combined sand core mold for casting the outer shell of an aerospace capsule according to claim 4, characterized in that: A limiting seat (17) is fixedly arranged at the top end of the fixing seat (8), and a plurality of supporting rods (11) are arranged at the lower end of the fixing plate (10).

6. The combined sand core mold for casting the outer shell of an aerospace capsule according to claim 5, characterized in that: The fixing plate (10) is fixed to the lower end of the base (4) by means of screws.

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