Brake disc casting mold

Abstract

The utility model relates to a brake disc casting mold, and relates to the technical field of casting molds, the brake disc casting mold comprises a mold base, a supporting box is fixedly connected to the top of the mold base, a lower mold is movably connected to the top of the supporting box, and supporting columns are fixedly connected to the four corners of the top of the mold base; a fixed top plate is fixedly connected to the top ends of the supporting columns, a hydraulic pump is fixedly connected to the top of the fixed top plate, a hydraulic rod is fixedly connected to an outlet of the hydraulic pump, a driving box is fixedly connected to the bottom end of the hydraulic rod, and an upper mold is movably connected to the bottom of the driving box; the inner side of the driving box is movably connected with a two-way screw rod, the right end of the two-way screw rod is fixedly connected with a manual rotating handle, the outer side of the two-way screw rod is in threaded connection with two threaded blocks, and the outer sides of the two threaded blocks are fixedly connected with limiting clamping blocks. The brake disc casting mold has the advantages that the casting mold is convenient to disassemble and assemble, and the casting mold can be used for machining a brake disc of a specified model.

Description

Technical Field

[0001] This application relates to the technical field of casting molds, and particularly relates to a brake disc casting mold. Background Art

[0002] A brake disc, simply speaking, is a circular disc that also rotates when the vehicle is moving. The brake caliper clamps the brake disc to generate braking force. When stepping on the brake, it is this that clamps the brake disc to play the role of decelerating or stopping. The brake disc has good braking effect and is easier to maintain than drum brakes.

[0003] During the production and processing of brake discs, casting molds are usually required to perform die-casting forming on the brake discs to ensure the quality of brake disc production. For example, the Chinese patent with the publication number CN214557195U in the related art proposes a brake disc casting mold, which has the advantage that corresponding exhaust grooves can be formed on the casting mold so that the gas in the brake disc can be discharged from the corresponding exhaust grooves to the outside of the sand box, which can effectively improve the formation of pores on the brake disc.

[0004] Regarding the above related technology, the inventor believes that there are the following defects: This design has the disadvantage of being inconvenient for disassembly and assembly, and the casting mold cannot be replaced, resulting in that the casting mold can only process brake discs of a specified model, restricting the use range of the casting mold, bringing certain adverse effects to the use process of the staff, being inconvenient to use, unable to meet the actual use requirements, and reducing the use efficiency and use effect of the casting mold. Utility Model Content

[0005] In order to solve the problem that the casting mold is inconvenient for disassembly and assembly, the casting mold cannot be replaced, resulting in that the casting mold can only process brake discs of a specified model and restricting the use range of the casting mold, this application provides a brake disc casting mold.

[0006] A brake disc casting mold provided by this application adopts the following technical solution:

[0007] A brake disc casting mold includes a mold base. A support box is fixedly connected to the top of the mold base. A lower mold is movably connected to the top of the support box. Support columns are fixedly connected to the four corners of the top of the mold base. The top ends of the support columns are fixedly connected to a fixed top plate. A hydraulic pump is fixedly connected to the top of the fixed top plate. A hydraulic rod is fixedly connected to the outlet of the hydraulic pump. The bottom end of the hydraulic rod is fixedly connected to a drive box. An upper mold is movably connected to the bottom of the drive box;

[0008] A bidirectional screw is movably connected to the inner side of the driving box. The right end of the bidirectional screw is fixedly connected to a manual turning handle. Two threaded blocks are threadedly connected to the outer side of the bidirectional screw, and limiting clamping blocks are fixedly connected to the outer sides of the two threaded blocks.

[0009] Two movable rods are movably connected to the inner side of the support box. Movable pulling handles are fixedly connected to the outer sides of the two movable rods. Mounting clamping blocks are fixedly connected to the outer sides of the two movable rods. Annular springs are fixedly connected to the outer sides of the two mounting clamping blocks, and the two annular springs are fixedly connected to the support box.

[0010] By adopting the above technical solution, the material for making the brake disc is directly poured into the inner side of the lower die, and then the driving box and the upper die are driven to move up and down by the hydraulic pump and the hydraulic rod, so that the upper die can perform casting processing on the brake disc material inside the lower die.

[0011] Technicians only need to rotate the manual turning handle to drive the bidirectional screw to rotate. Through the reaction force of the threaded holes on the inner sides of the two threaded blocks and the external thread rotation of the bidirectional screw, the two threaded blocks and the two limiting clamping blocks can be respectively driven to move in opposite directions, so as to facilitate the limiting fixation or disassembly of the upper die by the two limiting clamping blocks, thereby enabling the replacement of upper dies of different model sizes. At the same time, technicians only need to pull the two movable pulling handles, and through the elastic force of the two annular springs, drive the two movable rods and the two mounting clamping blocks to move in opposite directions, so as to facilitate the limiting fixation or disassembly of the lower die by the two mounting clamping blocks, thereby enabling the replacement of lower dies of different model sizes.

[0012] Optionally, a positioning square block is fixedly connected to the top of the upper die. A positioning square groove is provided at the bottom of the driving box. The positioning square block is located inside the positioning square groove. Limiting clamping grooves are provided on the left and right sides of the positioning square block, and the two limiting clamping blocks are respectively clamped with the two limiting clamping grooves.

[0013] By adopting the above technical solution, the positioning square block and the positioning square groove can accurately position the upper die, saving the time for measurement and alignment during the installation of the upper die. At the same time, two limiting clamping grooves are provided inside the positioning square block, enabling the two limiting clamping blocks to cooperate with the two limiting clamping grooves to accurately limit the positioning square block and the upper die, avoiding the phenomenon of the upper die falling off during use, and ensuring the stability of the upper die during use.

[0014] Optionally, a limiting square block is fixedly connected to the bottom of the lower die. A limiting square groove is provided inside the support box. The limiting square block is located inside the limiting square groove. Mounting clamping grooves are provided on the left and right sides of the limiting square block, and the two mounting clamping blocks are respectively clamped with the two mounting clamping grooves.

[0015] By adopting the above technical solution, the limiting block and the limiting groove can accurately position the lower mold, saving the time for measurement and alignment during the installation of the lower mold. At the same time, two installation clamping grooves are arranged inside the limiting block, so that the two installation clamping blocks can cooperate with the two installation clamping grooves to accurately limit the limiting block and the lower mold, avoiding the phenomenon of shaking or offset of the lower mold during use and ensuring the stability of the lower mold during use.

[0016] Optionally, moving sliders are fixedly connected to the tops of the two threaded blocks. Two moving chutes are formed inside the upper mold. The two moving sliders are respectively slidably connected to the two moving chutes. Threaded holes adapted to the external threads of the bidirectional screw are formed inside the two threaded blocks, and the internal thread directions of the two threaded holes are opposite.

[0017] By adopting the above technical solution, during the process of the manual turning handle and the bidirectional screw driving the two threaded blocks to move left and right, a limiting structure must be set for the two threaded blocks. Otherwise, the two threaded blocks will rotate and move left and right during the rotation of the bidirectional screw. Therefore, the two moving sliders and the two moving chutes can limit the two threaded blocks, restricting the circumferential rotation of the two threaded blocks and ensuring the stability of the left and right movement of the two threaded blocks at the same time.

[0018] Optionally, rolling bearings are fixedly connected to the outside of the bidirectional screw. The number of the rolling bearings is two. The two rolling bearings are both fixedly connected to the driving box. One end of the bidirectional screw away from the manual turning handle sequentially penetrates through the driving box, the rolling bearing and the threaded block and extends to the inside of the rolling bearing.

[0019] By adopting the above technical solution, the bidirectional screw needs to be supported while rotating. Otherwise, it is easy to produce the phenomenon of shaking and offset. The rolling bearing can support the bidirectional screw and ensure the stability of the rotation of the bidirectional screw at the same time. Because the rolling bearing is composed of an inner ring, an outer ring, rolling elements and a cage. The function of the inner ring is to cooperate with the bidirectional screw and rotate together with the bidirectional screw. The function of the outer ring is to cooperate with the driving box and play a supporting role.

[0020] Optionally, movable sliders are fixedly connected to the tops and bottoms of the two installation clamping blocks. Fixed chutes are formed inside the support box. The number of the movable sliders and the fixed chutes is four each. The four movable sliders are respectively slidably connected to the four fixed chutes.

[0021] By adopting the above technical solution, the two mounting clamping blocks move left and right through two annular springs. Because the two mounting clamping blocks are prone to movement instability or deviation during the left and right spring-back process, the stability of the left and right spring-back of the two mounting clamping blocks can be ensured through four movable sliders and four fixed chutes, avoiding the phenomenon of spring-back deviation of the two mounting clamping blocks.

[0022] Optionally, fixed through holes with the same diameter as the movable rods are provided on both the left and right sides of the support box. The two movable rods are respectively slidably connected to the two fixed through holes, and the two annular springs are respectively located outside the two movable rods.

[0023] By adopting the above technical solution, the two fixed through holes can ensure the effect of sliding limit of the two movable rods. At the same time, the two movable rods can be extended to the outside of the support box and respectively connected to the two movable pull handles. In this way, technicians can easily drive the two movable rods, two annular springs and two mounting clamping blocks inside the support box, ensuring the simplicity of operation of the two mounting clamping blocks.

[0024] Optionally, the number of the hydraulic pumps and hydraulic rods is two. The bottom ends of the hydraulic rods penetrate through the fixed top plate and extend to the top of the drive box. The number of the support columns is four, and the upper die is located directly above the lower die.

[0025] By adopting the above technical solution, the two hydraulic pumps and hydraulic rods can ensure the balance of the up and down movement of the drive box and the upper die, avoiding the phenomenon of left and right shaking of the upper die during the casting of the brake disc material inside the lower die, and ensuring the casting effect of the upper die on the brake disc material inside the lower die.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Pour the brake disc material to be cast into the inside of the lower die. Through two hydraulic pumps and two hydraulic rods, the drive box and the upper die can be driven to move downward in sequence. During the downward movement of the upper die, the brake disc material inside the lower die can be cast into shape;

[0028] 2. By pulling the two movable pull handles, the two annular springs can be in a compressed state, so that the two movable rods and the two mounting clamping blocks can be driven to move in opposite directions respectively. During the process of the two mounting clamping blocks moving in opposite directions, they will separate from the limit square block, making the limit square block and the lower die lose the limit, so that the lower die can be disassembled, replaced or repaired, facilitating the replacement of lower dies of different sizes;

[0029] 3. By rotating the manual handle, the bidirectional screw can be driven to rotate, which will respectively drive the two threaded blocks and the two limit clamping blocks to move in opposite directions. During the process of the two limit clamping blocks moving in opposite directions, they will separate from the positioning square block, causing the positioning square block and the upper mold to lose their limits, so that the upper mold can be disassembled, replaced or repaired, facilitating the replacement of upper molds of different sizes, achieving the purpose of easy disassembly and assembly of the casting mold, enabling the replacement of the casting mold, and the casting mold can process brake discs of specified models, improving the application range of the casting mold. Brief Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0031] Figure 2 Cross-sectional view of the connection structure of the support box in the embodiment of the present application;

[0032] Figure 3 Right view of the connection structure of the support box in the embodiment of the present application;

[0033] Figure 4 Top view of the connection structure of the mold base in the embodiment of the present application;

[0034] Figure 5 In the embodiment of the present application Figure 2 Enlarged view of part A;

[0035] Figure 6 In the embodiment of the present application Figure 2 Enlarged view of part B;

[0036] Figure 7 Front view of the connection structure of the support box in the embodiment of the present application.

[0037] Reference numerals: 1, mold base; 2, support box; 3, lower mold; 4, support column; 5, fixed top plate; 6, hydraulic pump; 7, hydraulic rod; 8, drive box; 9, upper mold; 10, bidirectional screw; 11, manual handle; 12, threaded block; 13, limit clamping block; 14, movable rod; 15, movable pull handle; 16, mounting clamping block; 17, annular spring; 18, positioning square block; 19, limit square block; 20, moving slider; 21, rolling bearing; 22, movable slider. Detailed Description of the Embodiment

[0038] The following further describes the present application in detail Figures 1-7 with reference to the attached drawings.

[0039] The embodiment of the present application discloses a brake disc casting mold. Refer to Figure 1 and Figure 2, including a mold base 1, a support box 2 is fixedly connected to the top of the mold base 1, a lower mold 3 is movably connected to the top of the support box 2, support columns 4 are fixedly connected to the four corners of the top of the mold base 1, a fixed top plate 5 is fixedly connected to the top of the support columns 4, a hydraulic pump 6 is fixedly connected to the top of the fixed top plate 5, a hydraulic rod 7 is fixedly connected to the outlet of the hydraulic pump 6, a driving box 8 is fixedly connected to the bottom of the hydraulic rod 7, an upper mold 9 is movably connected to the bottom of the driving box 8, a bidirectional screw 10 is movably connected to the inside of the driving box 8, a manual turning handle 11 is fixedly connected to the right end of the bidirectional screw 10, two threaded blocks 12 are threadedly connected to the outside of the bidirectional screw 10, limiting clamping blocks 13 are fixedly connected to the outside of the two threaded blocks 12, two movable rods 14 are movably connected to the inside of the support box 2, movable pulling handles 15 are fixedly connected to the outside of the two movable rods 14, mounting clamping blocks 16 are fixedly connected to the outside of the two movable rods 14, annular springs 17 are fixedly connected to the outside of the two mounting clamping blocks 16, and the two annular springs 17 are fixedly connected to the support box 2.

[0040] A positioning square block 18 is fixedly connected to the top of the upper mold 9, a positioning square groove is formed at the bottom of the driving box 8, the positioning square block 18 is located inside the positioning square groove, the length of the positioning square block 18 is equal to the length of the positioning square groove, the width of the positioning square block 18 is equal to the width of the positioning square groove, limiting clamping grooves are formed on the left and right sides of the positioning square block 18, and the two limiting clamping blocks 13 are respectively clamped with the two limiting clamping grooves. A limiting square block 19 is fixedly connected to the bottom of the lower mold 3, a limiting square groove is formed inside the support box 2, the limiting square block 19 is located inside the limiting square groove, the length of the limiting square block 19 is equal to the length of the limiting square groove, the width of the limiting square block 19 is equal to the width of the limiting square groove, mounting clamping grooves are formed on the left and right sides of the limiting square block 19, and the two mounting clamping blocks 16 are respectively clamped with the two mounting clamping grooves.

[0041] Moving sliders 20 are fixedly connected to the tops of the two threaded blocks 12, two moving chutes are formed inside the upper mold 9, the two moving sliders 20 are respectively slidably connected to the two moving chutes, the width of the moving slider 20 is equal to the width of the moving chute, threaded holes adapted to the external threads of the bidirectional screw 10 are formed inside the two threaded blocks 12, and the internal thread directions of the two threaded holes are opposite.

[0042] A rolling bearing 21 is fixedly connected to the outside of the bidirectional screw 10. The number of rolling bearings 21 is two, and both of the two rolling bearings 21 are fixedly connected to the drive box 8. One end of the bidirectional screw 10 away from the manual turning handle 11 sequentially penetrates through the drive box 8, the rolling bearing 21, and the threaded block 12 and extends to the inside of the rolling bearing 21. The rolling bearing 21 is composed of four parts: an inner ring, an outer ring, rolling elements, and a cage. The function of the inner ring is to cooperate with the bidirectional screw 10 and rotate together with the bidirectional screw 10. The function of the outer ring is to cooperate with the drive box 8 and play a supporting role. The rolling elements are evenly distributed between the inner ring and the outer ring by means of the cage. The cage can evenly distribute the rolling elements, guide the rolling elements to rotate and play a lubricating role. The inner ring is fixedly connected to the bidirectional screw 10, the outer ring is fixedly connected to the drive box 8, both the inner ring and the outer ring are movably connected to the rolling elements and the cage, and the rolling elements are movably connected to the cage.

[0043] Activity sliders 22 are fixedly connected to the top and bottom of both of the two mounting clamp blocks 16. Fixed sliding grooves are formed inside the support box 2. The number of the activity sliders 22 and the fixed sliding grooves is four each. The four activity sliders 22 are respectively slidably connected to the four fixed sliding grooves. The upper die 9 is located directly above the lower die 3. Base feet are fixedly connected to the four corners of the bottom of the die base 1.

[0044] Fixed through holes with the same diameter as the activity rods 14 are formed on both the left and right sides of the support box 2. The two activity rods 14 are respectively slidably connected to the two fixed through holes. The two annular springs 17 are respectively located on the outside of the two activity rods 14. The two activity pull handles 15 are both movably connected to the support box 2. The number of the hydraulic pumps 6 and the hydraulic rods 7 is two each. The bottom ends of the hydraulic rods 7 penetrate through the fixed top plate 5 and extend to the top of the drive box 8. The number of the support columns 4 is four.

[0045] In addition, by providing the die base 1, the support box 2 can be supported. By providing the support box 2, the lower die 3 can be supported, and at the same time, the two activity rods 14 and the two annular springs 17 can be hidden. By providing the lower die 3, the brake disc material can be stored. By providing the four support columns 4, the fixed top plate 5 can be supported. By providing the fixed top plate 5, the two hydraulic pumps 6 and the two hydraulic rods 7 can be supported. By providing the two hydraulic pumps 6 and the two hydraulic rods 7, the stability of the up and down movement of the drive box 8 and the upper die 9 can be ensured.

[0046] By setting up the drive box 8, the bidirectional screw 10 and the two threaded blocks 12 can be stored and hidden. The upper die 9 cooperates with the lower die 3 to cast and form the brake disc material inside the lower die 3. By setting up the bidirectional screw 10 and the two threaded blocks 12, the two limit clamp blocks 13 can be supported. By setting up the manual turning handle 11, the bidirectional screw 10 can be manually rotated. By setting up the positioning square block 18 and the positioning square groove, the upper die 9 can be installed and positioned. By setting up the two limit clamp blocks 13 and the two limit clamp grooves, the stability of the connection between the upper die 9 and the positioning square block 18 and the drive box 8 can be ensured.

[0047] By setting up the two movable rods 14, the two movable pull handles 15 and the two mounting clamp blocks 16 can be supported. By setting up the two movable pull handles 15, the two movable rods 14 and the two mounting clamp blocks 16 can be pulled. By setting up the two fixed through holes, the sliding effect of the two movable rods 14 can be ensured. By setting up the limit square block 19 and the limit square groove, the lower die 3 can be installed and positioned. By setting up the two mounting clamp blocks 16 and the two mounting clamp grooves, the stability of the connection between the lower die 3 and the limit square block 19 and the support box 2 can be ensured.

[0048] By setting up the two annular springs 17, the two movable rods 14 and the two mounting clamp blocks 16 can have a buffering effect. By setting up the two moving sliders 20 and the two moving chutes, the circumferential rotation of the two threaded blocks 12 can be restricted. By setting up the two rolling bearings 21, the rotational stability of the bidirectional screw 10 can be improved. By setting up the four movable sliders 22 and the four fixed chutes, the left - right movement stability of the two mounting clamp blocks 16 can be ensured. By setting up the four base feet, the mold base 1 can be supported.

[0049] The implementation principle of a brake disc casting mold in an embodiment of this application is as follows:

[0050] Pour the brake disc material to be cast and formed into the inside of the lower die 3. Through the two hydraulic pumps 6, hydraulic oil can be respectively pumped into the inside of the two hydraulic rods 7, so that the two hydraulic rods 7 can be driven. Through the two hydraulic rods 7, the drive box 8 and the upper die 9 can be driven to move downward in sequence. During the downward movement of the upper die 9, it will fit with the lower die 3, so that the brake disc material inside the lower die 3 can be cast and formed;

[0051] When it is necessary to disassemble, replace or repair the lower die 3, by pulling the two movable handles 15, the two annular springs 17 can be compressed, so that the two movable rods 14 and the two mounting clamp blocks 16 can be driven to move away from each other respectively. During the process of the two mounting clamp blocks 16 moving away from each other, they will be separated from the limit square block 19, causing the limit square block 19 and the lower die 3 to lose their limits, so that the lower die 3 can be disassembled, replaced or repaired, so as to facilitate the replacement of the lower die 3 of different sizes;

[0052] Through the above principle, through the cooperation of the limit square block 19, the limit square groove, the two movable rods 14, the two movable handles 15, the two mounting clamp blocks 16, the two mounting clamp grooves, the two annular springs 17 and the two positioning square blocks 18, the lower die 3 can be stably connected to the support box 2, avoiding the phenomenon of the lower die 3 falling off or shifting during the process of processing the brake disc material;

[0053] When it is necessary to disassemble, replace or repair the upper die 9, by rotating the manual turning handle 11, the bidirectional screw 10 can be driven to rotate. Since the two threaded blocks 12 are both threadedly connected to the bidirectional screw 10, during the rotation of the bidirectional screw 10, the two threaded blocks 12 and the two limit clamp blocks 13 will be driven to move away from each other respectively. During the process of the two limit clamp blocks 13 moving away from each other, they will be separated from the positioning square block 18, causing the positioning square block 18 and the upper die 9 to lose their limits, so that the upper die 9 can be disassembled, replaced or repaired, so as to facilitate the replacement of the upper die 9 of different sizes;

[0054] Through the above principle, through the cooperation of the positioning square block 18, the positioning square groove, the bidirectional screw 10, the manual turning handle 11, the two threaded blocks 12, the two limit clamp blocks 13 and the two limit clamp grooves, the upper die 9 can be stably connected to the drive box 8, avoiding the phenomenon of the upper die 9 falling off or shifting during the process of casting and forming the brake disc material.

[0055] Compared with the prior art, the overall structure is simple and convenient to use, realizing the purpose of facilitating the disassembly and assembly of the casting mold. The casting mold can be replaced, and the casting mold can process brake discs of specified models, improving the use range of the casting mold, reducing the trouble for the staff during the use process, meeting the actual use requirements, and improving the use efficiency and use effect of the casting mold.

[0056] The above are all the preferred embodiments of this application. Without limiting the protection scope of this application accordingly, therefore: all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A brake disc casting mold, characterized in that: It includes a mold base (1), a support box (2) is fixedly connected to the top of the mold base (1), a lower mold (3) is movably connected to the top of the support box (2), support columns (4) are fixedly connected to the four corners of the top of the mold base (1), a fixed top plate (5) is fixedly connected to the top of the support column (4), a hydraulic pump (6) is fixedly connected to the top of the fixed top plate (5), a hydraulic rod (7) is fixedly connected to the outlet of the hydraulic pump (6), and a driving box (8) is fixedly connected to the bottom of the hydraulic rod (7), and an upper mold (9) is movably connected to the bottom of the driving box (8); A bidirectional screw rod (10) is movably connected to the inside of the driving box (8), a manual turning handle (11) is fixedly connected to the right end of the bidirectional screw rod (10), two threaded blocks (12) are threadedly connected to the outside of the bidirectional screw rod (10), and limiting clamping blocks (13) are fixedly connected to the outside of the two threaded blocks (12); Two movable rods (14) are movably connected to the inside of the support box (2), movable pulling handles (15) are fixedly connected to the outside of the two movable rods (14), mounting clamping blocks (16) are fixedly connected to the outside of the two movable rods (14), annular springs (17) are fixedly connected to the outside of the two mounting clamping blocks (16), and the two annular springs (17) are both fixedly connected to the support box (2).

2. The casting mold for a brake disc according to claim 1, wherein: A positioning square block (18) is fixedly connected to the top of the upper mold (9), a positioning square groove is provided at the bottom of the driving box (8), the positioning square block (18) is located inside the positioning square groove, limiting clamping grooves are provided on the left and right sides of the positioning square block (18), and the two limiting clamping blocks (13) are respectively clamped with the two limiting clamping grooves.

3. A brake disc casting mold according to claim 1, characterized in that: A limiting square block (19) is fixedly connected to the bottom of the lower mold (3), a limiting square groove is provided inside the support box (2), the limiting square block (19) is located inside the limiting square groove, mounting clamping grooves are provided on the left and right sides of the limiting square block (19), and the two mounting clamping blocks (16) are respectively clamped with the two mounting clamping grooves.

4. A brake disc casting mold according to claim 1, characterized in that: Moving sliders (20) are fixedly connected to the tops of the two threaded blocks (12), two moving chutes are provided inside the upper mold (9), the two moving sliders (20) are respectively slidably connected to the two moving chutes, threaded holes adapted to the external threads of the bidirectional screw rod (10) are provided inside the two threaded blocks (12), and the internal thread directions of the two threaded holes are opposite.

5. The casting die for brake disc according to claim 1, wherein: Rolling bearings (21) are fixedly connected to the outside of the bidirectional screw rod (10), the number of the rolling bearings (21) is two, the two rolling bearings (21) are both fixedly connected to the driving box (8), and the end of the bidirectional screw rod (10) away from the manual turning handle (11) sequentially penetrates through the driving box (8), the rolling bearing (21) and the threaded block (12) and extends to the inside of the rolling bearing (21).

6. The casting mold for a brake disc according to claim 1, wherein: The tops and bottoms of the two mounting clamping blocks (16) are fixedly connected with movable sliders (22). Fixed sliding grooves are formed inside the support box (2). The number of the movable sliders (22) and the fixed sliding grooves is four each. The four movable sliders (22) are respectively slidably connected with the four fixed sliding grooves.

7. A brake disc casting mold according to claim 1, characterized in that: Fixed through holes with the same diameter as the movable rods (14) are formed on the left and right sides of the support box (2). The two movable rods (14) are respectively slidably connected with the two fixed through holes. The two annular springs (17) are respectively located on the outer sides of the two movable rods (14).

8. A brake disc casting mold according to claim 1, characterized in that: The number of the hydraulic pumps (6) and the hydraulic rods (7) is two each. The bottom ends of the hydraulic rods (7) penetrate through the fixed top plate (5) and extend to the tops of the drive boxes (8). The number of the support columns (4) is four. The upper die (9) is located directly above the lower die (3).

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