Modularized core box device for brake disc sand core

Abstract

The invention discloses a modular core box device for a brake disc sand core. The modular core box device comprises a bottom frame assembly; the lower core box bottom plate assembly is arranged above the bottom frame assembly; the lower ejector rod mother plate assembly is arranged at the lower end of the lower core box bottom plate assembly and located in the bottom frame assembly; the at least one lower core box is detachably arranged on the lower core box bottom plate assembly; the lower ejector rod daughter board assembly is arranged at the bottom of the lower core box; the upper core box bottom plate assembly is detachably arranged above the lower core box bottom plate assembly; the at least one upper core box is detachably arranged on the upper core box bottom plate assembly and corresponds to the lower core box; the sand shooting assembly is detachably arranged above the upper core box bottom plate assembly; and the air blowing assembly is detachably arranged above the upper core box bottom plate assembly. According to the modular core box device for the brake disc sand core, modular arrangement is achieved, mounting and dismounting are convenient, and the universality of equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of casting technology, and in particular to a modular core box device for brake disc sand cores. Background Technology

[0002] Traditional brake disc core production typically employs a "dedicated machine + dedicated mold frame" model. Core-making equipment is customized or modified to address the specific characteristics of brake disc cores (such as specific nozzle positions and ejection point requirements). Components on this equipment, such as the injection plate and ejector plate, are fixed and dedicated. A complete core box is designed and manufactured for each specific brake disc product, including upper and lower core box blocks and their fixed connections to the base plate and frame. When producing a particular product, the corresponding dedicated core box is hoisted onto the dedicated equipment, which can only wait for or produce similar products during this period.

[0003] The existing equipment has the following defects:

[0004] (1) High cost and inflexible: Each product requires a dedicated mold and dedicated equipment components, resulting in high design and manufacturing costs. Once the product is discontinued, the corresponding dedicated mold and equipment functions become idle or obsolete.

[0005] (2) Low switching efficiency: The disassembly and assembly of the entire core box involves a large number of screws and takes several hours, which seriously affects the production rhythm of multiple varieties and small batches.

[0006] (3) Core box is prone to deformation: The huge clamping force of the equipment (such as the clamping cylinder) directly acts on the core box body. Traditional design treats the core box as an independent component and installs it on the equipment table. The clamping force may cause elastic deformation of the core box base plate and the mold block, affecting the dimensional accuracy of the sand core, and even causing defects such as burrs and broken cores.

[0007] (4) Poor equipment versatility: The design of specialized equipment (such as the layout of nozzles and push rods) limits the structure that can produce sand cores and restricts the space for process optimization. Summary of the Invention

[0008] The purpose of this invention is to provide a modular core box device for brake disc sand cores, thereby improving the versatility of the equipment.

[0009] Based on the above problems, the technical solution provided by the present invention is as follows:

[0010] Modular core box assembly for brake disc cores includes:

[0011] Base frame component;

[0012] The lower core box base plate assembly is disposed above the bottom frame assembly;

[0013] The lower top rod mother plate assembly is disposed at the lower end of the lower core box bottom plate assembly and located inside the bottom frame assembly;

[0014] At least one lower core box is detachably mounted on the lower core box base plate assembly;

[0015] The lower push rod plate assembly is disposed at the bottom of the lower core box, including a movable lower push rod plate and a plurality of lower push rods disposed on the lower push rod plate. The lower push rod plate is detachably connected to the lower push rod mother plate of the lower push rod mother plate assembly, and the lower push rods can extend into the lower core box.

[0016] The upper core box bottom plate assembly is detachably mounted above the lower core box bottom plate assembly;

[0017] At least one upper core box is detachably mounted on the upper core box base plate assembly and is correspondingly mounted to the lower core box;

[0018] A sand-shooting assembly is detachably mounted above the upper core box bottom plate assembly, including a sand-shooting mother plate and a nozzle module detachably mounted on the sand-shooting mother plate. The nozzle of the nozzle module can extend into the upper core box to perform sand-shooting.

[0019] An air blowing assembly is detachably disposed above the upper core box bottom plate assembly, including an air blowing plate, an upper top plate elastically disposed within the air blowing plate, and an upper top rod module detachably disposed on the upper top plate, wherein the upper top rod of the upper top rod module can extend into the upper core box.

[0020] In some embodiments, the lower core box base plate assembly includes a lower core box base plate, a first positioning component and a plurality of support columns disposed on the lower core box base plate, the plurality of support columns being arranged in the circumferential direction of the lower core box base plate, and the lower end of the lower core box base plate having a vertical column extending in the vertical direction to abut against the machine platform.

[0021] The upper core box bottom plate assembly includes an upper core box bottom plate, a second positioning component disposed on the upper core box bottom plate corresponding to the first positioning component, and a plurality of support parts disposed on the upper core box bottom plate corresponding to the plurality of support columns, wherein the support parts abut against the support columns.

[0022] In some embodiments, the first positioning component includes a plurality of first positioning posts and a plurality of positioning platforms, the upper end of the first positioning post is provided with a first positioning protrusion, and the positioning platform is provided with a positioning groove; the second positioning component includes a plurality of second positioning posts and a plurality of third positioning posts, the second positioning posts are correspondingly arranged with the first positioning posts and are provided with positioning holes that match the first positioning protrusions, and the third positioning posts are correspondingly arranged with the positioning platforms and are provided with second positioning protrusions that match the positioning grooves.

[0023] In some embodiments, the bottom plate of the lower core box is provided with a first mounting groove for mounting the lower core box, and a plurality of first pressure plates are rotatably provided in the circumferential direction of the first mounting groove. The outer wall of the lower core box is provided with a first limiting groove for the first pressure plates to be inserted.

[0024] In some embodiments, the lower push rod mother plate assembly includes a first guide post assembly fixed to the lower end of the lower core box bottom plate and a lower push rod mother plate slidably disposed on the first guide post assembly. A plurality of second pressure plates are rotatably disposed on the lower push rod mother plate, and the second pressure plates abut against the upper part of the lower push rod sub-plate after rotation.

[0025] In some embodiments, the bottom plate of the upper core box is provided with a second mounting groove for mounting the upper core box, and a plurality of third pressure plates are rotatably provided in the second mounting groove. The outer wall of the upper core box is provided with a second limiting groove for the third pressure plates to be inserted.

[0026] In some embodiments, the upper push rod module includes an upper push rod support plate and a plurality of upper push rods mounted on the upper push rod support plate. The upper push rod support plate is provided with a third mounting groove into which the upper push rod support plate is inserted. A plurality of fourth pressure plates are rotatably provided in the circumferential direction of the third mounting groove. The upper push rod support plate is provided with a third limiting groove in the circumferential direction into which the fourth pressure plates are inserted.

[0027] In some embodiments, the upper top plate is provided with a limiting post extending into the positioning hole of the second positioning post at one end near the bottom plate of the upper core box;

[0028] The upper top plate is limited inside the air blowing plate by the second guide post assembly, and multiple elastic elements are provided between the upper top plate and the air blowing plate.

[0029] In some embodiments, the nozzle module includes a nozzle support plate and a plurality of nozzles mounted on the nozzle support plate. The shot mother plate is provided with a fourth mounting groove for the nozzle support plate to be inserted. A plurality of fifth pressure plates are rotatably provided in the fourth mounting groove, and the fifth pressure plates abut against the upper end of the nozzle support plate after rotation.

[0030] In some embodiments, the lower core box is provided with a third guide post assembly at its lower end, and the lower top rod plate is slidably engaged with the third guide post assembly.

[0031] Compared with the prior art, the advantages of the present invention are:

[0032] (1) The lower top rod plate assembly and the lower core box are integrated into a module and can be detachably mounted on the lower core box bottom plate assembly. The upper core box can be detachably mounted on the upper core box bottom plate assembly, the nozzle module can be detachably mounted on the sand shooting plate mother plate, and the upper top rod module can be detachably mounted on the upper top plate. These detachable modules can be replaced according to the needs of the sand core product to improve the versatility of the core box device.

[0033] (2) The rotary locking structure between the replaceable module and the general module adopts a rotatable pressure plate, which is simple in structure, easy to operate, and improves the switching efficiency.

[0034] (3) Multiple support columns are set at the upper end of the bottom plate of the lower core box and multiple support parts are set at the lower end of the bottom plate of the lower core box. At the same time, multiple columns are set at the lower end of the bottom plate of the lower core box. When the upper core box and the lower core box are closed, the force of the mold closing can be distributed to the machine table of the sand shooting machine to avoid core box deformation and improve the service life of the mold. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of an embodiment of the modular core box device for brake disc sand cores of the present invention;

[0037] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of the sand-shooting assembly in use in an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram showing the usage state of the air blowing assembly in an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of the bottom frame assembly in an embodiment of the present invention;

[0041] Figure 6 This is one of the schematic diagrams of the mounting structure of the lower core box in an embodiment of the present invention;

[0042] Figure 7 This is a second schematic diagram of the mounting structure of the lower core box in an embodiment of the present invention;

[0043] Figure 8 This is a schematic diagram of the structure of the lower push rod mother plate assembly in an embodiment of the present invention;

[0044] Figure 9This is one of the structural schematic diagrams of the lower core box and lower top rod sub-plate assembly in an embodiment of the present invention;

[0045] Figure 10 This is a second structural schematic diagram of the lower core box and lower top rod sub-plate assembly in an embodiment of the present invention;

[0046] Figure 11 This is a schematic diagram of the installation structure of the upper core box and the lower core box base plate assembly in an embodiment of the present invention;

[0047] Figure 12 This is a schematic diagram of the air blowing assembly in an embodiment of the present invention;

[0048] Figure 13 This is a schematic diagram of the sand-shooting assembly in an embodiment of the present invention;

[0049] in:

[0050] 100. Base frame assembly; 101. Base frame; 102. Lifting ring;

[0051] 200. Lower core box base plate assembly; 201. Lower core box base plate; 202. Support column; 203. Vertical column; 204. First positioning column; 205. Positioning platform; 206. First pressure plate;

[0052] 300. Lower push rod mother plate assembly; 301. Lower push rod mother plate; 302. First guide post; 303. Second pressure plate;

[0053] 400. Lower core box; 401. First limiting groove;

[0054] 500. Lower push rod plate assembly; 501. Lower push rod plate; 502. Third guide post; 503. Lower push rod;

[0055] 600. Upper core box; 601. Second limiting groove;

[0056] 700. Upper core box bottom plate assembly; 701. Upper core box bottom plate; 702. Support part; 703. Second positioning post; 704. Third positioning post; 705. Third pressure plate;

[0057] 800. Shot-shooting assembly; 801. Shot-shooting base plate; 802. Nozzle support plate; 803. Nozzle; 804. Fifth pressure plate;

[0058] 900, Air blowing assembly; 901, Air blowing plate; 901a, Air blowing base plate; 901b, Air blowing side plate; 902, Top plate; 903, Top rod support plate; 903a, Third limiting groove; 904, Top rod; 905, Fourth pressure plate; 906, Limiting post; 907, Second guide post; 908, Elastic element. Detailed Implementation

[0059] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0060] like Figure 1 and Figure 2 As shown in the illustration, an embodiment of the present invention provides a modular core box device for brake disc cores, including a base frame assembly 100, a lower core box base plate assembly 200, a lower push rod mother plate assembly 300, at least one lower core box 400, a lower push rod sub-plate assembly 500, an upper core box base plate assembly 700, at least one upper core box 600, a sand-shooting assembly 800, and an air-blowing assembly 900. In this example, there are two upper core boxes 600 and two lower core boxes 400. It should be understood that other numbers of core boxes can be used in other embodiments, and the present invention is not limited thereto.

[0061] like Figure 5 As shown, the bottom frame assembly 100 includes a hollow bottom frame 101 that runs vertically through the bottom and a plurality of lifting rings 102 disposed on the outer wall of the bottom frame 101, through which the entire core box assembly can be lifted.

[0062] like Figure 6 and Figure 7 As shown, the lower core box base plate assembly 200 is disposed above the base frame assembly 100. It includes a lower core box base plate 201 fixed to the upper end of the base frame 101, a first positioning component and multiple support columns 202 disposed on the lower core box base plate 201. The multiple support columns 202 are spaced apart circumferentially on the lower core box base plate 201. Simultaneously, multiple vertical columns 203 extending vertically at the lower end of the lower core box base plate 201 to abut against the machine platform are provided. The lower core box base plate 201 and the base frame 101 are positioned by positioning bosses on the base frame 101 and then fastened with screws.

[0063] The upper core box base plate assembly 700 is detachably mounted above the lower core box base plate assembly 200, such as... Figure 11 As shown, the system includes an upper core box base plate 701, a second positioning component corresponding to the first positioning component, and multiple support parts 702 corresponding to multiple support columns 202, all mounted on the upper core box base plate 701. The multiple support parts 702 abut against the multiple support columns 202. Through the cooperation of the multiple support columns 202 and the multiple support parts 702, and the action of the upright column 203, the clamping force of the upper core box 600 and the lower core box 400 is distributed to the sand-shooting machine platform, reducing the bending moment borne by the core box body, reducing the deformation of the core box, and improving the quality of the sand core.

[0064] The first positioning assembly includes multiple first positioning posts 204 and multiple positioning platforms 205. Each first positioning post 204 has a first positioning protrusion, and each positioning platform 205 has a positioning groove. The second positioning assembly includes multiple second positioning posts 703 and multiple third positioning posts 704. Each second positioning post 703 corresponds to a first positioning post 204 and has a positioning hole that matches the first positioning protrusion. Each third positioning post 704 corresponds to a positioning platform 205 and has a second positioning protrusion that matches the positioning groove. Thus, by having the first positioning protrusion of the first positioning post 204 extend into the positioning hole of the second positioning post 703, and the second positioning protrusion of the third positioning post 704 extend into the positioning groove of the positioning platform 205, the assembly of the upper core box base plate 701 and the lower core box base plate 201 can be achieved, thereby realizing the assembly between the upper core box 600 and the lower core box 400.

[0065] To facilitate the installation of the lower core box 400, a first mounting groove for installing the lower core box 400 is provided on the bottom plate 201 of the lower core box. Multiple first pressure plates 206 are rotatably provided in the circumferential direction of the first mounting groove. A first limiting groove 401 for inserting the first pressure plates 206 is provided on the outer wall of the lower core box 400. The first pressure plates 206 are cam-shaped and supported on the bottom plate 201 of the lower core box by a first support column. The first limiting groove 401 has an arc-shaped structure. By rotating the first pressure plates 206 into the first limiting groove 401, the lower core box 400 is locked.

[0066] To improve the stability and durability of the core box assembly, different components in different functional areas are made of different materials. Among them, the upper core box base plate 701 and the lower core box base plate 201, which bear the main clamping force and need to ensure overall flatness, can be made of high-performance cast iron, such as high-strength dense cast iron or alloy cast iron. The upper core box 600 and the lower core box 400, which are in direct contact with the sand core, require high wear resistance, high thermal fatigue strength and dimensional stability, and can be made of reinforced mold steel, such as mold steel that has undergone special heat treatment or has added hard phase.

[0067] like Figure 8 As shown, the lower push rod mother plate assembly 300 is disposed at the lower end of the lower core box bottom plate assembly 200 and located inside the bottom frame assembly 100. It includes a first guide post assembly fixed to the lower 201 end of the lower core box bottom plate and a lower push rod mother plate 301 slidably disposed on the first guide post assembly. The first guide post assembly includes a plurality of first guide posts 302 arranged at intervals. The upper end of the first guide post 302 is fixed to the lower core box bottom plate 201 and the lower end is provided with a limiting part. A plurality of first guide sleeves are provided on the lower push rod mother plate 301 for the plurality of first guide posts 302 to pass through.

[0068] like Figure 9 and Figure 10As shown, the lower push rod plate assembly 500 is installed at the bottom of the lower core box 400, including a lower push rod plate 501 movably disposed at the lower end of the lower core box and a plurality of lower push rods 503 disposed on the lower push rod plate 501.

[0069] To facilitate locking between the lower push rod sub-plate assembly 500 and the lower push rod mother plate 301, multiple second pressure plates 303 are rotatably mounted on the lower push rod mother plate 301. After rotation, the second pressure plates 303 abut against the upper part of the lower push rod sub-plate 501. The second pressure plates 303 have a cam structure, and the lower push rod mother plate 301 has clearance holes for the column 203 to pass through. The lower push rod sub-plate 501 and the lower push rod mother plate 301 are detachably connected via the second pressure plates 303. When the ejection mechanism of the sand-shooting machine is activated, it drives the lower push rod mother plate 301 upwards, thereby moving the lower push rod 503 and extending it into the lower core box 400.

[0070] A third guide post assembly is provided at the lower end of the lower core box 400. The lower top rod plate 501 is slidably engaged with the third guide post assembly. The third guide post assembly includes a plurality of third guide posts 502 arranged at intervals. The upper end of the third guide post 502 is fixed on the lower core box 400 and the lower end is provided with a limiting part. A guide sleeve is provided on the lower top rod plate 501 for the third guide post 502 to pass through.

[0071] like Figure 11 As shown, to facilitate the installation of the upper core box 600, a second mounting groove for installing the upper core box 600 is provided on the bottom plate 701 of the upper core box. Multiple third pressure plates 705 are rotatably arranged around the second mounting groove. Simultaneously, a second limiting groove 601 for inserting the third pressure plates 705 is provided on the outer wall of the upper core box 600. The third pressure plates 705 are cam-shaped and supported by a support member, and the second limiting groove 601 is arc-shaped.

[0072] The air blowing assembly 900 is detachably mounted above the upper core box bottom plate assembly 700, such as... Figure 12 As shown, the assembly includes an air-blowing plate 901, an upper top plate 902 elastically disposed on the air-blowing plate 901, and an upper push rod module detachably disposed on the upper top plate 902. The upper push rod 904 of the upper push rod module can extend into the upper core box 600. The upper push rod module includes an upper push rod support plate 903 and multiple upper push rods 904 mounted on the upper push rod support plate 903. The upper top plate 902 is provided with a third mounting groove for the upper push rod support plate 903 to be inserted. Multiple fourth pressure plates 905 are rotatably disposed in the circumferential direction of the third mounting groove. The upper push rod support plate 903 is provided with a third limiting groove 903a for the fourth pressure plates 905 to be inserted in the circumferential direction of the upper push rod support plate 903. The fourth pressure plates 905 are cam-shaped, and the third limiting groove 903a is arc-shaped.

[0073] The air blowing plate 901 includes an air blowing base plate 901a and air blowing side plates 901b arranged around the air blowing base plate 901a. Air blowing ports are provided on the air blowing base plate 901a. The air blowing side plates 901b abut against the upper end of the upper core box base plate 701 and are sealed with a sealing ring between them. After sand injection is completed, catalyst is blown in through the air blowing ports. The catalyst enters the upper core box 600 through the gap between the upper push rod 904 and the injection hole through which the nozzle passes, thus solidifying the sand core.

[0074] To facilitate the positioning of the air blowing assembly 900, a limiting post 906 extending into the positioning hole of the second positioning post 703 is provided at one end of the upper top plate 902 near the bottom plate 701 of the upper core box. When the air blowing assembly 900 is placed on the upper end of the bottom plate 701 of the upper core box, the limiting post 906 is inserted into the positioning hole of the second positioning post 703 to achieve positioning between the air blowing assembly 900 and the bottom plate assembly 700 of the upper core box.

[0075] The upper top plate 902 is limited inside the air blowing plate 901 by the second guide post assembly. At the same time, multiple elastic elements 908 are provided between the upper top plate 902 and the air blowing plate 901. The second guide post assembly includes multiple second guide posts 907. The upper end of the second guide post 907 is fixed on the air blowing plate 901 and the lower end is provided with a limiting part. The upper top plate 902 is provided with a guide sleeve for the second guide post 907 to pass through. The elastic element 908 is a spring. At the same time, the lower end of the air blowing plate 901 is provided with a positioning part for positioning the elastic element 908. When the air blowing plate 901 is placed on the upper core box bottom plate 701, the upper ejector rod 904 abuts against the sand core in the core box, causing the upper top plate 902 to move upward. The elastic element 908 is in a compressed state. When the mold is opened after blowing is completed, the upper core box bottom plate 701 is separated from the air blowing plate 901. The upper ejector rod 904 still abuts against the sand core, so that the sand core is kept in the lower core box 400, which facilitates demolding.

[0076] The sand-shooting assembly 800 is detachably mounted above the upper core box bottom plate assembly 700, such as... Figure 13 As shown, the device includes a sand-shooting mother plate 801 and a nozzle module detachably mounted on the sand-shooting mother plate 801. The nozzle module includes a nozzle support plate 802 and multiple nozzles 803 mounted on the nozzle support plate 802. A fourth mounting groove is provided on the sand-shooting mother plate 801 for the nozzle support plate 802 to be inserted into. Multiple fifth pressure plates 804 are rotatably mounted in the circumferential direction of the fourth mounting groove. After rotation, the fifth pressure plates 804 abut against the upper end of the nozzle support plate 802. The fifth pressure plates 804 have a circular plate structure with a notch, that is, one side of the fifth pressure plate 804 is arc-shaped and the other side is flat.

[0077] The working principle of this invention is as follows:

[0078] The module consisting of the lower core box 400 and the lower top rod plate assembly 500 is installed on the lower core box base plate 201. Simultaneously, the lower top rod plate 501 is locked onto the lower top rod mother plate 301. Then, the lower core box base plate 201 is installed on the base frame 101. The assembled part is then hoisted onto the sand-shooting machine's platform using lifting equipment. Finally, the upper core box base plate assembly 700 is installed onto the lower core box base plate assembly 200 using the sand-shooting machine. Figure 3 As shown, the sand-shooting assembly 800 is then installed on the upper core box bottom plate assembly 700, and sand is shot into the upper core box 600 through the nozzle 803. After sand shooting is completed, as shown... Figure 4 As shown, the sand-shooting assembly 800 is replaced with the air-blowing assembly 900. The catalyst is blown into the upper core box 600 through the air-blowing plate 901 to complete the curing of the sand core. Finally, the air-blowing assembly 900 and the upper core box bottom plate assembly 700 are removed in sequence, and the ejection mechanism of the sand-shooting machine is activated to complete the demolding.

[0079] In summary, this core box device is modular, and the nozzle module, upper push rod module, upper core box, lower core box, and lower push rod can all be disassembled and replaced, which facilitates the production of brake disc sand cores with different structures and improves the versatility of the equipment.

[0080] The above examples are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A modular core box device for brake disc sand cores, characterized in that, include: Base frame component; The lower core box base plate assembly is disposed above the bottom frame assembly; The lower top rod mother plate assembly is disposed at the lower end of the lower core box bottom plate assembly and located inside the bottom frame assembly; At least one lower core box is detachably mounted on the lower core box base plate assembly; The lower push rod plate assembly is disposed at the bottom of the lower core box, including a movable lower push rod plate and a plurality of lower push rods disposed on the lower push rod plate. The lower push rod plate is detachably connected to the lower push rod mother plate of the lower push rod mother plate assembly, and the lower push rods can extend into the lower core box. The upper core box bottom plate assembly is detachably mounted above the lower core box bottom plate assembly; At least one upper core box is detachably mounted on the upper core box base plate assembly and is correspondingly mounted to the lower core box; A sand-shooting assembly is detachably mounted above the upper core box bottom plate assembly, including a sand-shooting mother plate and a nozzle module detachably mounted on the sand-shooting mother plate. The nozzle of the nozzle module can extend into the upper core box to perform sand-shooting. An air blowing assembly is detachably disposed above the upper core box bottom plate assembly, including an air blowing plate, an upper top plate elastically disposed within the air blowing plate, and an upper top rod module detachably disposed on the upper top plate, wherein the upper top rod of the upper top rod module can extend into the upper core box.

2. The modular core box device for brake disc sand cores according to claim 1, characterized in that: The lower core box bottom plate assembly includes a lower core box bottom plate, a first positioning component and a plurality of support columns disposed on the lower core box bottom plate, the plurality of support columns being arranged in the circumferential direction of the lower core box bottom plate, and the lower end of the lower core box bottom plate having a vertical column extending in the vertical direction to abut against the machine platform. The upper core box bottom plate assembly includes an upper core box bottom plate, a second positioning component disposed on the upper core box bottom plate corresponding to the first positioning component, and a plurality of support parts disposed on the upper core box bottom plate corresponding to the plurality of support columns, wherein the support parts abut against the support columns.

3. The modular core box device for brake disc sand cores according to claim 2, characterized in that: The first positioning component includes multiple first positioning posts and multiple positioning platforms. The upper end of the first positioning post is provided with a first positioning protrusion, and the positioning platform is provided with a positioning groove. The second positioning component includes multiple second positioning posts and multiple third positioning posts. The second positioning posts are correspondingly arranged with the first positioning posts and are provided with positioning holes that match the first positioning protrusions. The third positioning posts are correspondingly arranged with the positioning platforms and are provided with second positioning protrusions that match the positioning grooves.

4. The modular core box device for brake disc sand cores according to claim 2, characterized in that: The bottom plate of the lower core box is provided with a first mounting groove for mounting the lower core box. Multiple first pressure plates are rotatably provided in the circumferential direction of the first mounting groove. The outer wall of the lower core box is provided with a first limiting groove for the first pressure plates to be inserted.

5. The modular core box device for brake disc sand cores according to claim 2, characterized in that: The lower push rod mother plate assembly includes a first guide post assembly fixed to the lower end of the lower core box bottom plate and a lower push rod mother plate slidably disposed on the first guide post assembly. A plurality of second pressure plates are rotatably disposed on the lower push rod mother plate, and the second pressure plates abut against the upper part of the lower push rod sub-plate after rotation.

6. The modular core box device for brake disc sand cores according to claim 2, characterized in that: The bottom plate of the upper core box is provided with a second mounting groove for mounting the upper core box. The second mounting groove is provided with a plurality of third pressure plates that rotate circumferentially. The outer wall of the upper core box is provided with a second limiting groove for the third pressure plates to be inserted.

7. The modular core box device for brake disc sand cores according to claim 3, characterized in that: The upper push rod module includes an upper push rod support plate and multiple upper push rods mounted on the upper push rod support plate. The upper push rod support plate is provided with a third mounting groove for the upper push rod support plate to be inserted. Multiple fourth pressure plates are rotatably provided in the circumferential direction of the third mounting groove. The upper push rod support plate is provided with a third limiting groove in the circumferential direction for the fourth pressure plates to be inserted.

8. The modular core box device for brake disc sand cores according to claim 7, characterized in that: The upper top plate is provided with a limiting post at one end near the bottom plate of the upper core box, which extends into the positioning hole of the second positioning post; The upper top plate is limited inside the air blowing plate by the second guide post assembly, and multiple elastic elements are provided between the upper top plate and the air blowing plate.

9. The modular core box device for brake disc sand cores according to claim 1, characterized in that: The nozzle module includes a nozzle support plate and multiple nozzles mounted on the nozzle support plate. The shot mother plate is provided with a fourth mounting groove for the nozzle support plate to be inserted. Multiple fifth pressure plates are rotatably provided in the fourth mounting groove, and the fifth pressure plates abut against the upper end of the nozzle support plate after rotation.

10. The modular core box device for brake disc sand cores according to claim 1, characterized in that: The lower core box is provided with a third guide post assembly at its lower end, and the lower top rod plate is slidably engaged with the third guide post assembly.

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