A split type core making mold tool for variable speed sand shooting

Abstract

The application discloses a split type core making mold tool for variable-speed sand shooting, which comprises a lower mold assembly and an upper mold assembly which are connected in a butt joint mode, and a forming assembly which is arranged between the lower mold assembly and the upper mold assembly and has a consistent shape; the sand shooting assembly comprises a sand shooting nozzle which is provided with a flow adjusting mechanism; the flow adjusting mechanism comprises a micro strong torque motor which is arranged on the outer side of the sand shooting nozzle, and the motor shaft of the motor extends into the channel of the sand shooting nozzle; the motor shaft is connected with semicircular baffles on both sides in the channel of the sand shooting nozzle; and the radius of the semicircular baffles is smaller than the channel radius of the sand shooting nozzle. The beneficial effects of the scheme can be known according to the description of the scheme, the structure is simple and reasonable, the sand shooting flow and speed are adjusted, the uniformity of the overall density of the sand core is ensured, and the solidification process is ensured; when the sand core for a brake disc is changed, only the forming assembly needs to be replaced, and only the bolts need to be assembled and disassembled, so that the replacement is convenient; and a new production line does not need to be purchased.

Description

Technical Field

[0001] This invention relates to the field of brake disc core processing, and more particularly to a split-type core-making mold tooling for variable speed sand injection. Background Technology

[0002] Brake disc cores play a crucial role in brake disc production, making the stability and efficiency of core production paramount. The core production process can be divided into several steps, including mold changing, sand injection, air-curing (triethylamine curing), and core ejection. While core-making processes have largely achieved automation, two problems currently exist: First, the constant sand injection flow rate, due to the mold's contraction from bottom to top, results in a higher density at the core's center compared to the bottom, slowing down the curing gas flow and causing some cores to remain uncured, impacting production. Second, the mold fixture is an integrated unit, limiting production to cores of the same specification only, making it unsuitable for producing multiple specifications in small quantities, leading to mold waste.

[0003] Therefore, a special core-making mold tooling needs to be designed to effectively solve the above problems and realize the production of high-performance sand cores. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a simple and rationally designed variable-speed sand-shooting split-type core-making mold tooling. It utilizes the adjustment of sand-shooting flow rate and velocity to ensure the uniformity of the overall density of the sand core, thus guaranteeing the curing process. When changing the production of brake disc sand cores, only the molding components need to be replaced, and only the bolts need to be installed and removed, making replacement convenient. It also eliminates the need to purchase a new production line.

[0005] To achieve the above objectives, the present invention provides a split core-making mold tooling for variable speed sand shooting, including a lower mold assembly and an upper mold assembly that are connected vertically, and a molding component with the same shape is provided between the lower mold assembly and the upper mold assembly.

[0006] It also includes a sand-shooting assembly, which includes a sand-shooting nozzle and the sand-shooting nozzle is provided with a flow regulating mechanism;

[0007] It also includes an air blowing component;

[0008] The molding assembly includes a lower molding mold and an upper molding mold, and a mold cavity for a brake disc sand core is provided between the lower molding mold and the upper molding mold;

[0009] The upper forming mold is flush with the lower surface of the upper mold assembly;

[0010] The lower forming mold is flush with the upper surface of the lower mold assembly;

[0011] The flow regulation mechanism includes a miniature high-torque motor disposed outside the sand-shooting nozzle, the motor shaft of which extends into the sand-shooting nozzle channel;

[0012] Semi-circular baffles are connected to both sides of the motor shaft located in the sand-shooting nozzle channel;

[0013] The radius of the semi-circular baffle is smaller than the channel radius of the sand-shooting nozzle.

[0014] Furthermore, the lower mold assembly includes a lower mold base plate, and a lower mold base is connected above the lower mold base plate;

[0015] A support slide bar is provided between the lower mold base plate and the lower mold base;

[0016] Four lower mold base positioning pins are provided between the lower mold base plate and the lower mold base;

[0017] The support slide rod is slidably connected to the lifting template, and the lower surface of the lifting template is connected to the lifting rod, which passes through the lower mold base plate and is connected to a cylinder;

[0018] The lower mold base has a lower mold base pressure block connected to the center of its upper surface.

[0019] Furthermore, a top core slide rod is provided on the lower surface of the lower forming mold, and a top core plate is slidably connected to the top core slide rod. A top core is provided on the upper surface of the top core plate, and the top core passes through the lower forming mold to the bottom of the mold cavity of the brake disc sand core.

[0020] A mold-lifting block is provided on the lower surface of the top core plate;

[0021] When the mold plate moves upward to contact the mold release top block and continues to move upward, the top core can pass through the lower forming mold and push upward.

[0022] Furthermore, the upper mold assembly includes an upper template, and an upper mold base pressure block is connected to the center of the lower surface of the upper template;

[0023] The upper template, upper mold base pressure block and lower mold base pressure block are tightly assembled by a diamond-shaped positioning hole process;

[0024] The upper template is provided with a sand injection port aligned with the model cavity.

[0025] Furthermore, the sand-shooting assembly includes a sand-shooting mounting plate, on which the sand-shooting nozzle is mounted, and the sand-shooting nozzle is aligned with the sand-shooting port.

[0026] Furthermore, the air blowing assembly includes an air blowing mounting plate, the air blowing mounting plate is provided with an air blowing nozzle, and the air blowing nozzle is aligned with the sand injection port.

[0027] Furthermore, a mold base positioning pin is provided on the upper surface of the lower mold base, and the upper end of the mold base positioning pin is positioned and connected to the upper mold plate.

[0028] Furthermore, a limit block is provided at the lower end of the top core slide rod.

[0029] The upper mold assembly, the forming assembly, the sand injection assembly, and the air blowing assembly are all connected to the lifting and moving device;

[0030] The lifting and moving device includes two parallel tracks, lifting cylinders respectively set at both ends of the tracks, a moving car one and a moving car two horizontally moving on the two tracks, and a vertical moving structure connected to the bottom of the two tracks.

[0031] The sand-shooting assembly is fixedly connected to the lower part of the first mobile vehicle, and the air-blowing assembly is fixedly connected to the lower part of the second mobile vehicle. The up-and-down moving structure is connected to the upper mold assembly and the forming assembly.

[0032] The mobile vehicle includes a vehicle platform and two drive wheels respectively disposed on both sides of the vehicle platform. The drive wheels are slidably disposed in the track, and the lower end face of the vehicle platform is connected to the sand-shooting mounting plate.

[0033] The mobile vehicle 2 includes a vehicle platform 2 and two power wheels 2 respectively disposed on both sides of the vehicle platform 2. The power wheels 2 are slidably disposed in the track, and the lower end face of the vehicle platform 2 is connected to the air blowing mounting plate.

[0034] The vertical moving structure includes fixed side plates fixedly installed on the outer sides of the two tracks, a guide post vertically connected to the bottom of the fixed side plate, a cylinder one vertically fixed above the fixed side plate, and a lifting plate one and a lifting plate two arranged horizontally in sequence. The bottom end of the guide post vertically passes through the lifting plate one and the lifting plate two. The retractable free end of the cylinder one is vertically fixedly connected to the lifting plate one. The lifting plate one is vertically fixed with cylinder two, and the retractable free end of the cylinder two is vertically fixedly connected to the lifting plate two.

[0035] An upper fixing plate is fixed between the two lifting plates 1 by upper bolts. The upper fixing plate is connected to the upper template and the upper template is connected to the upper forming mold. A lower fixing plate is fixed between the two lifting plates 2 by lower bolts and the lower fixing plate is connected to the lower forming mold.

[0036] The specific steps involved in this application are as follows:

[0037] S1: The worker installs the lower mold assembly on the work platform of the production line and tightens it with threads to align the center of the production line cylinder with the center of the lower mold assembly.

[0038] S2: Install the four molding components according to the specific production situation. The mold cavities inside the molding components can be the same or different.

[0039] S3: Adjust the upper mold assembly, air blowing assembly and sand shooting assembly to the working state;

[0040] S4: Start the production line;

[0041] S5: The sand-shooting component moves to the center of the upper mold component under the action of the production line slide rail;

[0042] S6: The sand-shooting nozzle starts spraying sand. In the first 5 seconds, the micro flow adjustment device does not work. At this time, the two semi-circular baffles on the motor shaft are in a vertical position, and the sand is sprayed out at the maximum speed.

[0043] S7: In 5-10 seconds, the motor shaft rotates 90°, the two semi-circular baffles on the motor shaft are in a horizontal state, the sand injection flow rate and velocity are reduced until the sand injection is completed, forming the brake disc sand core.

[0044] S7: The sand-shooting component moves out of the upper mold component and returns to its initial position;

[0045] S8: The air blowing component moves to the center of the upper mold component under the action of the production line slide rail and descends to the lowest position;

[0046] S9: The air blowing assembly injects triethylamine gas to solidify the brake disc sand core until the air blowing is completed;

[0047] S10: At this time, the lifting and moving device on the production line clamps the upper mold assembly, causing the upper mold assembly to move upward until the air-blowing mounting plate contacts the upper template.

[0048] During the upward movement of the upper mold assembly, the air nozzle presses against the upper end of the brake disc sand core, causing the sand core and the upper molding part to be demolded.

[0049] S11: The cylinder below the lower mold base plate moves upward, causing the mold lifting rod to move upward, which in turn pushes the mold lifting plate upward;

[0050] The mold plate moves upward until it contacts the mold release block, which drives the core plate to move upward. The core moves upward at the same time, pushing the bottom of the brake disc core and separating the brake disc core from the lower forming mold.

[0051] S12: The robotic arm picks up the brake disc sand core for the next impregnation process, and the work of this application is completed.

[0052] The beneficial effects of this scheme can be seen from the description above. It has a simple structure, reasonable design, and the following advantages:

[0053] (1) By adjusting the sand injection flow rate and velocity, the overall density of the sand core is made uniform, thus ensuring the curing process.

[0054] (2) The appearance of the molding components is consistent, and the inner cavity is adjusted according to different brake disc sand cores. When changing the brake disc sand core for production, only the molding components need to be replaced, without the need to replace the overall tooling, which reduces the tooling configuration cost.

[0055] (3) The molding components have the same appearance. The upper mold component and the lower mold component can naturally form a positioning with the molding component. Therefore, the installation and disassembly of the molding component only requires the removal and installation of bolts, which is convenient for replacement.

[0056] (4) The lower mold assembly and the forming assembly are linked in the demolding action to adapt to different core positions and meet the demolding needs of different brake disc sand cores;

[0057] (5) This application is compatible with the original production line and there is no need to purchase a new production line.

[0058] (6) The present application includes a lifting and moving device, which has the following technical advantages:

[0059] First, the upper mold assembly, molding assembly, sand injection assembly, and air blowing assembly are integrated into one unit. Under the control of the controller, the sand injection assembly and air blowing assembly can be adjusted left and right and up and down according to the actual operation procedure, and can be matched with the upper mold assembly respectively. This is efficient and convenient, and greatly improves production efficiency.

[0060] Secondly, by adjusting the upper mold assembly and the forming assembly up and down using cylinder one and cylinder two, they slide up and down on the guide post. This not only facilitates the installation, disassembly, and replacement of the upper mold assembly and the forming assembly, but also helps to adjust the contact and fastening strength of the upper and lower components, ensuring good airtightness. Attached Figure Description

[0061] Figure 1 This is a schematic diagram of the split-type core-making mold tooling in Embodiment 1 of the present invention.

[0062] Figure 2 This is a schematic diagram of the lower mold assembly in Embodiment 1 of the present invention.

[0063] Figure 3 This is a schematic diagram of the molding component in Embodiment 1 of the present invention.

[0064] Figure 4 This is a schematic diagram of the upper mold assembly in Embodiment 1 of the present invention.

[0065] Figure 5 This is a schematic diagram of the sand-shooting assembly in Embodiment 1 of the present invention.

[0066] Figure 6This is a schematic diagram of the air blowing assembly in Embodiment 1 of the present invention.

[0067] Figure 7 This is a schematic diagram of the lifting and moving device in Embodiment 2 of the present invention.

[0068] Figure 8 This is a schematic diagram of the vertically movable structure in Embodiment 2 of the present invention.

[0069] In the diagram, 1. Lower mold assembly; 2. Upper mold assembly; 3. Molding assembly; 4. Sand injection assembly; 5. Air blowing assembly; 6. Lower molding mold; 7. Upper molding mold; 8. Mold cavity; 9. Sand injection nozzle; 10. Flow adjustment mechanism; 11. Lower mold base plate; 12. Lower mold base; 13. Support slide bar; 14. Lifting plate; 15. Lifting rod; 16. Cylinder; 17. Lower mold base pressure block; 18. Top core slide rod; 19. Top core plate; 20. Top core; 21. Mold lifting top block; 22. Upper template; 23. Upper mold base pressure block; 24. Sand injection nozzle; 25. Sand injection mounting plate; 26. Air blowing mounting plate; 27. Air blowing nozzle; 28. Mold base positioning pin; 29. ​​Lifting cylinder; 30. Track; 31. Moving cart one; 32. Power wheel one; 33. Lower fixed plate; 331. Lower bolt; 34. Upper fixed plate; 341. Upper bolt; 35. Moving cart two; 36. Power wheel two; 38. Cylinder one; 39. Fixed side plate; 40. Guide pillar; 41. Cylinder two; 42. Lifting plate one; 43. Lifting plate two; 44. Connecting block one; 45. Connecting block two. Detailed Implementation

[0070] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0071] Example 1

[0072] like Figures 1-6 As shown, this embodiment is a split core-making mold tooling for variable speed sand shooting, including a lower mold assembly 1 and an upper mold assembly 2 that are connected to each other, and a molding assembly 3 with the same shape is provided between the lower mold assembly 1 and the upper mold assembly 2.

[0073] It also includes a sand-shooting assembly 4, which includes a sand-shooting nozzle 9 and a flow regulating mechanism 10.

[0074] It also includes the air blowing component 5;

[0075] The molding component 3 includes a lower molding mold 6 and an upper molding mold 7, and a mold cavity 8 for a brake disc sand core is provided between the lower molding mold 6 and the upper molding mold 7.

[0076] The upper forming mold 7 is flush with the lower surface of the upper mold assembly 2;

[0077] The lower forming mold 6 is flush with the upper surface of the lower mold assembly 1;

[0078] The flow regulation mechanism 10 includes a miniature high-torque motor disposed outside the sand-shooting nozzle 9, with the motor shaft extending into the channel of the sand-shooting nozzle 9;

[0079] Semi-circular baffles are connected to both sides of the motor shaft located in channel 9 of the sand-shooting nozzle;

[0080] The radius of the semi-circular baffle is smaller than the channel radius of the sand-shooting nozzle 9.

[0081] Furthermore, the lower mold assembly 1 includes a lower mold base plate 11, and a lower mold base 12 is connected above the lower mold base plate 11;

[0082] A support slide bar 13 is provided between the lower mold base plate 11 and the lower mold base 12;

[0083] Four lower mold base positioning pins are provided between the lower mold base plate 11 and the lower mold base 12;

[0084] The support slide bar 13 is slidably connected to the lifting template 14, and the lower surface of the lifting template 14 is connected to the lifting rod 15. The lifting rod 15 passes through the lower mold base plate 11 and is connected to the cylinder 16.

[0085] The lower mold base 12 has a lower mold base pressure block 17 connected to the center of its upper surface.

[0086] Furthermore, a top core slide rod 18 is provided on the lower surface of the lower forming mold 6, and a top core plate 19 is slidably connected to the top core slide rod 18. A top core 20 is provided on the upper surface of the top core plate 19, and the top core 20 passes through the lower forming mold 6 to the bottom of the mold cavity 8 of the brake disc sand core.

[0087] A mold release block 21 is provided on the lower surface of the core plate 19;

[0088] When the mold plate 14 moves upward and contacts the mold release block 21, and continues to move upward, the core 20 can pass through the lower forming mold 6 and push upward.

[0089] Furthermore, the upper mold assembly 2 includes an upper template 22, and an upper mold base pressure block 23 is connected to the center of the lower surface of the upper template 22;

[0090] The upper template 22, the upper mold base pressure block 23, and the lower mold base pressure block 17 are tightly assembled using a diamond-shaped positioning hole process;

[0091] The upper template 22 is equipped with a sand injection port 24 that aligns with the model cavity 8.

[0092] Furthermore, the sand-shooting assembly 4 includes a sand-shooting mounting plate 25, on which a sand-shooting nozzle 9 is mounted, the sand-shooting nozzle 9 being aligned with the sand-shooting port 24.

[0093] Furthermore, the air blowing assembly 5 includes an air blowing mounting plate 26, which is provided with an air blowing nozzle 27, which is aligned with the orthogonal sand inlet 24.

[0094] Furthermore, a mold base positioning pin 28 is provided on the upper surface of the lower mold base 12, and the upper end of the mold base positioning pin 28 is positioned and connected to the upper template 22.

[0095] Furthermore, a limit block is provided at the lower end of the top core slide rod 18.

[0096] The specific steps involved in this application are as follows:

[0097] S1: The worker installs the lower mold assembly 1 on the work platform of the production line and tightens it with threads so that the center of the production line cylinder 16 is aligned with the center of the lower mold assembly 1.

[0098] S2: Install the four molding components 3 according to the specific production situation. The mold cavities 8 inside the molding components 3 can be the same or different.

[0099] S3: Adjust the upper mold assembly 2, the air blowing assembly 5 and the sand shooting assembly 4 to the working state;

[0100] S4: Start the production line;

[0101] S5: The sand-shooting component 4 moves to the center of the upper mold component 2 under the action of the production line slide rail;

[0102] S6: The sand-shooting nozzle 9 starts to spray sand. In the first 5 seconds, the micro flow adjustment device does not work. At this time, the two semi-circular baffles on the motor shaft are in a vertical position, and the sand is sprayed out at the maximum speed.

[0103] S7: In 5-10 seconds, the motor shaft rotates 90°, the two semi-circular baffles on the motor shaft are in a horizontal state, the sand injection flow rate and velocity are reduced until the sand injection is completed, forming the brake disc sand core.

[0104] S7: The sand-shooting component 4 moves out of the upper mold component 2 and returns to its initial position;

[0105] S8: The air blowing component 5 moves to the center of the upper mold component 2 under the action of the production line slide rail and descends to the lowest position;

[0106] S9: The air blowing assembly 5 ejects triethylamine gas to solidify the brake disc sand core until the air blowing is completed;

[0107] S10: At this time, the lifting and moving device on the production line clamps the upper mold assembly 2, causing the upper mold assembly 2 to be lifted upward until the air blowing mounting plate 26 contacts the upper template 22.

[0108] During the upward movement of the upper mold assembly 2, the air nozzle 27 presses against the upper end of the brake disc sand core, causing the sand core and the upper molding mold 7 to be demolded.

[0109] S11: The cylinder 16 below the lower mold base plate 11 moves upward, causing the mold lifting rod 15 to move upward, which in turn pushes the mold lifting plate 14 upward;

[0110] The mold plate 14 moves upward to contact the mold release block 21, which drives the core plate 19 to move upward. At the same time, the core 20 moves upward, pushing the bottom of the brake disc sand core and separating the brake disc sand core from the lower forming mold 6.

[0111] S12: The robotic arm picks up the brake disc sand core for the next impregnation process, and the work of this application is completed.

[0112] Example 2

[0113] Based on Example 1, this Example 2 involves the following structural arrangement and operation.

[0114] See Figures 7-8 The upper mold assembly 2, molding assembly 3, sand injection assembly 4, and air blowing assembly 5 are all connected to the lifting and moving device;

[0115] The lifting and moving device includes two parallel tracks 30, lifting cylinders 29 respectively set at both ends of the tracks 30, a moving car 31 and a moving car 35 horizontally moved on the two tracks 30, and a vertical moving structure connected to the bottom of the two tracks 30.

[0116] The lower part of the moving carriage 1 31 is fixedly connected to the sand shooting component 4, and the lower part of the moving carriage 2 35 is fixedly connected to the air blowing component 5. The up-and-down moving structure is connected to the upper mold component 2 and the forming component 3.

[0117] The mobile vehicle 31 includes a vehicle plate and two drive wheels 32 respectively disposed on both sides of the vehicle plate. The drive wheels 32 are slidably disposed in the track 30. The lower end face of the vehicle plate is connected to the sand-shooting mounting plate 25.

[0118] The second mobile vehicle 35 includes a second vehicle plate and two power wheels 36 respectively disposed on both sides of the second vehicle plate. The power wheels 36 are slidably disposed in the track 30. The lower end face of the second vehicle plate is connected to the air blowing mounting plate 26.

[0119] It should be noted that the connection between vehicle plate one and sand-shooting mounting plate 25, and the connection between vehicle plate two and air-blowing mounting plate 26, can be made by bolts, which also facilitates installation and disassembly.

[0120] The vertical moving structure includes fixed side plates 39 fixedly installed on the outside of the two tracks 30, a guide post 40 with one end vertically connected to the bottom of the fixed side plate 39, a cylinder 38 vertically fixed above the fixed side plate 39, and lifting plates 42 and 43 arranged horizontally in sequence. The bottom end of the guide post 40 vertically passes through the lifting plates 42 and 43. The retractable free end of the cylinder 38 is vertically fixedly connected to the lifting plate 42. A cylinder 41 is vertically fixed on the lifting plate 42. The retractable free end of the cylinder 41 is vertically fixedly connected to the lifting plate 43.

[0121] An upper fixing plate 34 is fixed between the two lifting plates 42 by an upper bolt 341. The upper fixing plate 34 is connected to the upper template 22, and the upper template 22 is connected to the upper forming mold 7. A lower fixing plate 33 is fixed between the two lifting plates 43 by a lower bolt 331. The lower fixing plate 33 is connected to the lower forming mold 6.

[0122] Cylinder 38 drives lifting plate 42 and cylinder 41 to move up and down for adjustment, while cylinder 41 can in turn drive lifting plate 43 to move up and down for adjustment. The bottom end of the guide post 40 is a free end without a partition structure, so lifting plate 42 and lifting plate 43 can be freely detached from the guide post 40, making installation and disassembly convenient and easy.

[0123] More preferably, a docking block 44 is provided on the outer side of the moving vehicle 31 and the moving vehicle 35, and a docking block 45 is provided at the fixed side plate 39. Only when the outer surfaces of the docking block 44 and the docking block 45 are flush can the sandblasting and air blowing directions be aligned with the sandblasting nozzle and the model cavity, thus avoiding deviation during operation and control.

[0124] In actual operation, the lifting cylinder 29 controls the up and down movement of the two tracks 30. The two tracks 30 are set above the lower mold assembly 1. The operation of cylinder 1 38 and cylinder 2 41 is controlled to adjust the engagement and positioning of the upper forming mold 7 and the lower forming mold 6, forming a mold cavity 8 above the lower mold assembly 1. At this time, the upper template 22 moves to the top of the guide post 40, that is, it contacts the bottom surface of the track 30, which facilitates docking and positioning with the sand shooting mounting plate 25 or the air blowing mounting plate 26.

[0125] Subsequently, control the mobile cart 31 to move above the upper template 22 for sandblasting; after sandblasting is completed, move the mobile cart 31 away and drive the mobile cart 35 to work, move above the upper template 22 for air blowing.

[0126] More preferably, the power systems in this application are all connected to a PLC controller, which is easy for those skilled in the art to implement and will not be described in detail here.

[0127] The technical features of this invention not described can be implemented by or using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this invention, and this invention is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention should also be within the protection scope of this invention.

Claims

1. A split-type core-making mold fixture for variable-speed sand shooting, characterized in that, It includes a lower mold assembly (1) and an upper mold assembly (2) that are connected vertically, and a molding assembly (3) with the same shape is provided between the lower mold assembly (1) and the upper mold assembly (2). It also includes a sand-shooting assembly (4), which includes a sand-shooting nozzle (9) and the sand-shooting nozzle (9) is provided with a flow regulating mechanism (10). It also includes an air blowing component (5); The molding component (3) includes a lower molding mold (6) and an upper molding mold (7), and a mold cavity (8) for a brake disc sand core is provided between the lower molding mold (6) and the upper molding mold (7). The upper molding part (7) is flush with the lower surface of the upper mold assembly (2); The lower forming mold (6) is flush with the upper surface of the lower mold assembly (1); The flow regulation mechanism (10) includes a miniature high-torque motor disposed outside the sand-shooting nozzle (9), and the motor shaft of the motor extends into the channel of the sand-shooting nozzle (9). Semi-circular baffles are connected to both sides of the motor shaft located in the channel of the sand-shooting nozzle (9); The radius of the semi-circular baffle is smaller than the channel radius of the sand-shooting nozzle (9); The upper mold assembly (2), the forming assembly (3), the sand injection assembly (4), and the air blowing assembly (5) are all connected to the lifting and moving device; The lifting and moving device includes two parallel tracks (30), lifting cylinders (29) respectively set at both ends of the tracks (30), a moving car one (31) and a moving car two (35) set horizontally on the two tracks (30), and a vertical moving structure connected to the bottom of the two tracks (30). The sand-shooting assembly (4) is fixedly connected to the lower part of the first mobile vehicle (31), and the air-blowing assembly (5) is fixedly connected to the lower part of the second mobile vehicle (35). The up-and-down moving structure is connected to the upper mold assembly (2) and the molding assembly (3). The vertical moving structure includes fixed side plates (39) fixedly installed on the outside of the two tracks (30), a guide post (40) with one end vertically connected to the bottom of the fixed side plate (39), a cylinder (38) vertically fixed above the fixed side plate (39), and a lifting plate (42) and a lifting plate (43) arranged horizontally in sequence. The bottom end of the guide post (40) vertically passes through the lifting plate (42) and the lifting plate (43). The retractable free end of the cylinder (38) is vertically fixedly connected to the lifting plate (42). A cylinder (41) is vertically fixed on the lifting plate (42). The retractable free end of the cylinder (41) is vertically fixedly connected to the lifting plate (43).

2. The split-type core-making mold tooling for variable-speed sand shooting according to claim 1, characterized in that, The lower mold assembly (1) includes a lower mold base plate (11), and a lower mold base (12) is connected above the lower mold base plate (11). A support slide rod (13) is provided between the lower mold base plate (11) and the lower mold base (12). Four positioning pins for the lower mold base (12) are provided between the lower mold base plate (11) and the lower mold base (12); The support slide bar (13) is slidably connected to the lifting template (14), and the lower surface of the lifting template (14) is connected to the lifting rod (15). The lifting rod (15) passes through the lower mold base plate (11) and is connected to the cylinder (16). The lower mold base (12) has a lower mold base pressure block (17) connected to the center of its upper surface.

3. The split-type core-making mold tooling for variable-speed sand shooting according to claim 2, characterized in that, The lower surface of the lower molding mold (6) is provided with a top core slide rod (18), the top core slide rod (18) is slidably connected to a top core plate (19), the upper surface of the top core plate (19) is provided with a top core (20), the top core (20) passes through the lower molding mold (6) to the bottom of the mold cavity (8) of the brake disc sand core, and a limit block is provided at the lower end of the top core slide rod (18); The lower surface of the top core plate (19) is provided with a mold release block (21). When the mold plate (14) moves upward to contact the mold plate top block (21) and continues to move upward, the top core (20) can pass through the lower forming mold (6) and push upward.

4. The split-type core-making mold tooling for variable-speed sand shooting according to claim 2, characterized in that, The upper mold assembly (2) includes an upper template (22), and an upper mold base pressure block (23) is connected to the center of the lower surface of the upper template (22). The upper template (22), the upper mold base pressure block (23), and the lower mold base pressure block (17) are tightly assembled using a diamond-shaped positioning hole process; The upper template (22) is provided with a sand-shooting port (24) aligned with the model cavity (8).

5. The split-type core-making mold tooling for variable-speed sand shooting according to claim 4, characterized in that, The sand-shooting assembly (4) includes a sand-shooting mounting plate (25), on which the sand-shooting nozzle (9) is mounted, and the sand-shooting nozzle (9) is aligned with the sand-shooting port (24).

6. The split-type core-making mold tooling for variable-speed sand shooting according to claim 4, characterized in that, The air blowing assembly (5) includes an air blowing mounting plate (26), which is provided with an air blowing nozzle (27) aligned with the sand injection port (24).

7. The split-type core-making mold tooling for variable-speed sand shooting according to claim 4, characterized in that, The upper surface of the lower mold base (12) is provided with a mold base positioning pin (28), and the upper end of the mold base positioning pin (28) is positioned and connected to the upper mold plate (22).

8. The split-type core-making mold tooling for variable-speed sand shooting according to claim 1, characterized in that, The mobile vehicle (31) includes a vehicle plate and power wheels (32) respectively disposed on both sides of the vehicle plate. The power wheels (32) are slidably disposed in the track (30). The lower end face of the vehicle plate is connected to the sand-shooting mounting plate (25). The second mobile vehicle (35) includes a second vehicle plate and two power wheels (36) respectively disposed on both sides of the second vehicle plate. The second power wheels (36) are slidably disposed in the track (30). The lower end face of the second vehicle plate is connected to the air blowing mounting plate (26).

9. The split-type core-making mold tooling for variable-speed sand shooting according to claim 4, characterized in that, An upper fixing plate (34) is fixed between the two lifting plates (42) by an upper bolt (341). The upper fixing plate (34) is connected to the upper template (22). The upper template (22) is connected to the upper forming mold (7). A lower fixing plate (33) is fixed between the two lifting plates (43) by a lower bolt (331). The lower fixing plate (33) is connected to the lower forming mold (6).

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