Clamping body casting mold for a jointed sand core

Abstract

The utility model belongs to the automobile brake caliper casting technical field, concretely relates to a kind of caliper body casting mould of conjoined sand core, including the corresponding upper and lower setting positive plate and reverse plate;At least one group of cavity units is equipped between positive plate and reverse plate, each group of cavity units includes two or more than parallelly arranged castings cavities, and each castings cavity is made by positive and reverse plate to form sand mould;A whole conjoined sand core is pressed into the sand mould, and the conjoined sand core is synchronously lowered into corresponding cavity after being integrally cast by sand core mould, and the sand core mould includes core box assembly matched with the structure of the conjoined sand core.The utility model makes the manufacture and maintenance of mould more convenient and fast by adjusting layout and mould design, reduces production cost;And through the accurate cooperation of the core frame and positive and reverse plate, the accurate position and stable shape of the conjoined sand core during pouring process are ensured, the output of single mould is increased, the casting success rate is improved, and the labor intensity is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of automotive brake caliper casting technology, and in particular relates to a caliper casting mold with an integrated sand core. Background Technology

[0002] As is well known, brake calipers are a crucial component of a car's braking system. Problems with them can significantly impact driving safety, potentially causing the vehicle to lose braking function during operation, with potentially severe consequences. Taking disc brakes as an example, passenger car disc brakes are powered by hydraulic pressure, and their main components include the brake disc, hydraulic cylinder, brake caliper, and brake lines. The brake disc is fixed to the wheel and rotates with it, while the hydraulic cylinder, located within the brake caliper, is fixed to the brake's support bracket. Currently, in the casting industry, the conventional design method uses a single sand core to form the entire cavity of the caliper body (see appendix). Figure 3 For some calipers where the casting size is relatively small compared to the mold size, more cavities are arranged to achieve a higher yield. However, more cavities require more sand cores to be inserted into the cavities, which affects the molding cycle time of the equipment, reduces production efficiency, increases the labor intensity of front-line production staff, and increases the probability of accidents during production and maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a casting mold and sand core mold for parts, which has the advantages of integrated sand core, reduced lower core working intensity, increased output of single mold, improved casting success rate, and reduced labor intensity.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A clamp casting mold for an integrated sand core includes a positive pressure plate and a negative pressure plate arranged correspondingly at the top and bottom; at least one set of cavity units is provided between the positive pressure plate and the negative pressure plate, each set of cavity units includes two or more casting cavities arranged in parallel, and each casting cavity is formed into a sand mold by the positive and negative pressure plates; an integral integrated sand core is pressed into the sand mold and formed, and the integrated sand core is cast integrally by the sand core mold and then simultaneously lowered into the corresponding cavity, the sand core mold including a core box assembly that matches the structure of the integrated sand core.

[0005] The core box assembly includes a lower mold located at the bottom; the top surface of the lower mold is provided with an integrated sand core, and a matching upper mold is provided on its top; the front and rear ends of the lower mold are detachably equipped with sand-shooting plates, which are connected to a hydraulic mold opening and closing mechanism to realize automatic demolding and mold closing.

[0006] The lower part of the sand mold is also provided with a lower core frame for positioning the integrated sand core; the lower core frame is located at the bottom of the cavity of the sand mold and is used to fix and support the integrated sand core. By cooperating with the counter pressure plate, it ensures that the sand core is accurately positioned and stable in shape during pouring, and together with the positive and negative pressure plates, it forms a complete forming space for the casting.

[0007] The lower core frame is a rectangular frame with two rows and two columns of positioning grooves on its top surface; each positioning groove has a protruding positioning block on both sides.

[0008] The number of interconnected sand cores positioned by the lower core frame is four.

[0009] The dimensions of the lower core frame are the same as those of the positive pressure plate.

[0010] Compared with existing technologies, the beneficial effects of this utility model are: This invention relates to a casting mold that, through adjustments to its layout and design, achieves integrated sand cores, simplifying the mold structure and making its manufacturing and maintenance more convenient and efficient, thus reducing production costs. Furthermore, the precise cooperation between the lower core frame and the positive and negative pressure plates ensures the accurate position and stable shape of the integrated sand core during the pouring process, providing a strong guarantee for the precise forming of castings. This reduces the workload of core placement, increases the output of a single mold, improves the casting success rate, and reduces labor intensity. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the structure of the sand core mold in this utility model.

[0013] Figure 3 This is a schematic diagram of the existing technology structure.

[0014] In the diagram: 1. Positive pressure plate, 2. Negative pressure plate, 3. Sand mold, 4. Integrated sand core, 5. Lower mold, 6. Upper mold, 7. Sand shooting plate, 8. Lower core frame, 9. Positioning groove, 10. Positioning block. Detailed Implementation

[0015] The present invention will be described in conjunction with the accompanying drawings.

[0016] like Figures 1-3The diagram illustrates a clamp casting mold for an integrated sand core, comprising a positive pressure plate 1 and a negative pressure plate 2 arranged correspondingly at the top and bottom. At least one set of cavity units is provided between the positive pressure plate 1 and the negative pressure plate 2. Each cavity unit includes two or more casting cavities arranged in parallel. Each casting cavity is formed into a sand mold 3 by the positive and negative pressure plates. An integral integrated sand core 4 is pressed into the sand mold 3. After being integrally cast by the sand core mold, the integrated sand core 4 is simultaneously lowered into the corresponding cavity. The sand core mold includes a core box assembly that matches the structure of the integrated sand core 4. The core box assembly includes a lower mold 5 located at the bottom. The upper surface of the lower mold 5 is provided with the integrated sand core 4, and a matching upper mold 6 is provided on its top. The lower mold 5... The upper mold 6 and lower mold 5 are detachably mounted with sand-shooting plates 7 at both ends. The sand-shooting plates 7 are connected to the hydraulic mold opening and closing mechanism to realize automatic demolding and mold closing. After the upper mold 6 and lower mold 5 are closed, a complete cavity corresponding to the integrated sand core structure is formed. During the casting process, the sand material is evenly injected into the cavity through the sand-shooting plates 7 to form the preliminary shape of the integrated sand core. The hydraulic mold opening and closing mechanism can accurately control the opening and closing action of the upper mold 6 and lower mold 5 to ensure that automatic demolding can be smoothly achieved after casting is completed, which greatly improves production efficiency and reduces the difficulty and labor intensity of manual operation. Moreover, the detachable sand-shooting plate 7 design makes it convenient to replace it when wear or damage occurs, reducing the maintenance cost of the mold.

[0017] The lower part of the sand mold 3 is also provided with a lower core frame 8 for positioning the integrated sand core; the lower core frame 8 is located at the bottom of the cavity of the sand mold 3, and is used to fix and support the integrated sand core 4. By cooperating with the counter pressure plate 2, it ensures that the sand core is accurately positioned and stable in shape during pouring, and together with the positive and negative pressure plates, it forms a complete forming space for the casting; by setting at least one set of cavity units, and each set of cavity units contains two or more parallel casting cavities, the mold greatly improves production efficiency and enables batch casting. The design of the integral integrated sand core makes the sand core structure more stable during the casting process, reduces casting defects caused by sand core displacement or deformation, and improves the quality of the casting; the lower core frame 8 is a rectangular frame, and a positioning groove 9 is provided on its top surface in two rows and two columns; each positioning groove 9 has a protruding positioning groove on both sides. Positioning block 10; the positioning groove 9 and positioning block 10 are used to fix the position of the sand core in the mold to prevent the sand core from shifting or deforming during the pouring process; the lower core frame 8 positions four connected sand cores 4; the size of the lower core frame 8 is the same as that of the positive pressure plate 1; the function of the lower core frame 8 is to fix and support the connected sand cores 4, ensuring that the sand core is accurately positioned and stable in shape during pouring, and together with the reverse pressure plate 2, it forms a complete forming space for the casting. Its outer contour is defined by the reverse pressure plate 2, and its internal structure is supported by the sand mold 3 and the lower core frame 8. The setting of the lower core frame 8 further enhances the stability of the connected sand cores 4 in the sand mold 3. It closely cooperates with the reverse pressure plate to ensure that the sand core is accurately positioned and stable in shape during pouring, and together with the positive and reverse pressure plates, it provides a complete forming space for the casting, ensuring the dimensional accuracy and surface quality of the casting.

[0018] In use, this device first forms the preliminary shape of the integrated sand core 4 through the core box assembly. The formed integrated sand core 4 is then fixed on the lower core frame 8. Then, the positive pressure plate 1 and the negative pressure plate 2 work together to form the sand mold 3. The positive pressure plate 1 is then retracted, and the lower core frame 8, carrying the integrated sand core 4, is lowered into the sand mold 3. After the sand mold 3 is lowered, molten metal is poured into it. Under the high temperature of the molten metal, the integrated sand core 4 plays a key role in forming the internal structure of the casting. After the molten metal cools and solidifies, the mold is opened, and the casting is removed. At this point, the lower core frame 8 separates from the integrated sand core 4, completing the entire casting process. This operating procedure can effectively ensure the quality and precision of the casting. Existing molds of the same model use six sand cores per mold, with one sand core producing one product. This new mold uses four sand cores per mold, with one sand core producing two products, reducing the number of sand cores from six to four. Furthermore, the use of integrated sand cores reduces the workload of core placement and increases the output per mold. This improvement not only significantly enhances production efficiency but also reduces production costs. Specifically, due to the reduced number of sand cores, mold preparation time is greatly shortened, and operators do not need to frequently change sand cores, thus reducing the possibility of operational errors and improving the stability and reliability of the production process. At the same time, the integrated sand core mold design simplifies mold maintenance and extends its service life, further reducing long-term production costs.

[0019] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent modifications can be made to the technical solution of the present invention, and all such equivalent modifications fall within the protection scope of the present invention.

Claims

1. A clamp-type casting mold for integrated sand cores, characterized in that: It includes a positive pressure plate (1) and a negative pressure plate (2) arranged correspondingly on the top and bottom; at least one set of cavity units is provided between the positive pressure plate (1) and the negative pressure plate (2), each set of cavity units includes two or more casting cavities arranged in parallel, and each casting cavity is made into a sand mold (3) by the positive and negative pressure plates (2); an integral integrated sand core (4) is pressed into the sand mold (3) to form the sand core (4), and the integrated sand core (4) is integrally cast and then synchronously lowered into the corresponding cavity after being cast by the sand core mold. The sand core mold includes a core box assembly that matches the structure of the integrated sand core (4).

2. The clamp-type casting mold for the integrated sand core according to claim 1, characterized in that: The core box assembly includes a lower mold (5) located below; the top surface of the lower mold (5) is provided with an integrated sand core (4), and a matching upper mold (6) is provided on its top; the front and rear ends of the lower mold (5) are detachably equipped with sand-shooting plates (7), which are connected to a hydraulic mold opening and closing mechanism to achieve automatic demolding and mold closing.

3. The clamp-type casting mold for the integrated sand core according to claim 1, characterized in that: The lower part of the sand mold (3) is also provided with a lower core frame (8) for positioning the integrated sand core (4); the lower core frame (8) is located at the bottom of the cavity of the sand mold (3) and is used to fix and support the integrated sand core (4). By cooperating with the counter pressure plate (2), it ensures that the sand core is accurately positioned and stable in shape during casting, and together with the positive and negative pressure plates (2), it forms the complete forming space of the casting.

4. The clamp-type casting mold for the integrated sand core according to claim 3, characterized in that: The lower core frame (8) is a rectangular frame with two rows and two columns of positioning grooves (9) arranged on its top surface; each positioning groove (9) has a protruding positioning block (10) on both sides.

5. The clamp casting mold for the integrated sand core according to claim 3, characterized in that: The number of interconnected sand cores (4) positioned by the lower core frame (8) is four.

6. The clamp-type casting mold for the integrated sand core according to claim 3, characterized in that: The dimensions of the lower core frame (8) are the same as those of the positive pressure plate (1).

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