Shell and cover integrated casting mold for differential casting

Abstract

The utility model discloses a shell and cover integrated casting mold of a differential mechanism casting, which comprises an upper mold (1) and a lower mold (2), the upper part of the mold closing surface of the upper mold (1) is recessed inwards to form a plurality of upper mold cavities capable of accommodating end cover sand cores (3), and the lower part of the mold closing surface of the upper mold (1) is recessed inwards to form a plurality of lower mold cavities capable of accommodating end cover sand cores (3). The upper part of a mold closing surface of the lower mold (2) is inwards sunken to form a plurality of lower mold cavities capable of accommodating shell sand cores (4), a middle partition plate (5) is formed between the end cover sand core (3) and the shell sand cores (4), and a cavity for accommodating the middle partition plate (5) is formed between the upper mold cavity and the lower mold cavity; wherein the end cover sand core (3), the shell sand core (4) and the middle partition plate (5) are of an integrated structure. According to the shell and cover integrated casting mold for the differential casting, the process yield and production efficiency of the differential casting can be improved, the product development cost is reduced, the product development period is shortened, and the cost during batch production is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a shell-cover integrated casting mold for a differential casting. Background Art

[0002] The existing differential casting housing and cover are made separately. The housing sand core in the traditional casting process is as follows: Figure 1 As shown, the end cap sand core is as follows Figure 2 As shown, the shell and end cap are each produced using a set of molds, and the sand cores are each produced using a set of core box molds. This casting process results in low yield and production efficiency. Furthermore, an additional set of outer molds and core boxes must be developed, resulting in higher development costs, longer development cycles, and higher costs for subsequent mass production. Utility Model Content

[0003] The purpose of the utility model is to provide a differential casting shell cover integrated casting mold, the differential casting shell cover integrated casting mold can improve the differential casting process yield and production efficiency, reduce product development costs and cycle, and reduce the cost of mass production.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an integrated casting mold for the shell and cover of a differential casting, wherein the integrated casting mold for the shell and cover of the differential casting includes an upper mold and a lower mold, wherein the upper mold surface is partially recessed inward to form a plurality of upper mold cavities capable of accommodating end cover sand cores, and the lower mold surface is partially recessed inward to form a plurality of lower mold cavities capable of accommodating shell sand cores, an intermediate partition is formed between the end cover sand core and the shell sand core, and a cavity for accommodating the intermediate partition is formed between the upper mold cavity and the lower mold cavity; wherein the end cover sand core, the shell sand core and the intermediate partition are an integrated structure.

[0005] Preferably, at least one positioning block is provided along the circumferential direction at the edge of the middle partition, and positioning grooves are provided at positions corresponding to the positioning blocks on the upper mold and the lower mold.

[0006] Preferably, a main runner is formed at the center of the upper mold, and a first-level runner is formed on the left and right sides of the main runner. The first-level runner forms a second-level runner in the upper and lower directions, and multiple final runners are formed outwardly on the secondary runner, and each final runner is connected to the upper mold cavity.

[0007] Preferably, a main runner is formed at the center of the lower mold, and a first-level runner is formed on the left and right sides of the main runner. The first-level runner forms a second-level runner in the upper and lower directions, and multiple final runners are formed on the secondary runner, each of which is connected to the lower mold cavity.

[0008] Preferably, each intermediate partition plate is formed with a cut corner for preventing interference.

[0009] Preferably, the multiple final runners are distributed symmetrically in vertical direction and in left-right direction.

[0010] Preferably, the upper mold cavity or the lower mold cavity connected to the multiple final runners is fully distributed on the mold surface.

[0011] According to the above technical solution, the present invention integrates the shell sand core and the end cap sand core by modifying the sand core structure and adding a central partition. This allows the shell and cap castings to be produced simultaneously in the same mold, thereby improving the casting process yield and production efficiency. Furthermore, it eliminates the need for a set of outer molds and sand core boxes, reducing new product development costs and cycle time, and lowering the cost of mass production.

[0012] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a structural diagram of the shell sand core in the prior art;

[0015] Figure 2 It is a structural diagram of the end cover sand core in the prior art;

[0016] Figure 3 This is a structural diagram of an integrated sand core upper shell sand core and a middle partition in a differential casting shell cover integrated casting mold provided by the utility model;

[0017] Figure 4 This is a structural diagram of an integrated sand core upper end cover sand core and a middle partition in a differential casting shell cover integrated casting mold provided by the utility model;

[0018] Figure 5 This is a schematic diagram of the assembly of an upper mold and an integrated sand core in a housing cover integrated casting mold for a differential casting provided by the present invention;

[0019] Figure 6 The utility model is a schematic diagram of the assembly of a lower mold and an integrated sand core in a housing cover integrated casting mold for a differential casting provided by the present invention.

[0020] Description of Reference Numerals

[0021] 1- Upper mold 2- Lower mold

[0022] 3-end cover sand core 4-shell sand core

[0023] 5-middle partition 6-positioning block

[0024] 7- Positioning groove 8- Cutting angle DETAILED DESCRIPTION

[0025] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0026] In the present invention, unless otherwise stated, directional words such as "up, down, left, right" contained in a term merely represent the direction of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0027] See also Figure 5 and Figure 6 The utility model provides an integrated casting mold for a differential casting, which includes an upper mold 1 and a lower mold 2. The upper mold surface of the upper mold 1 is partially recessed to form a plurality of upper mold cavities capable of accommodating end cover sand cores 3. The lower mold surface of the lower mold 2 is partially recessed to form a plurality of lower mold cavities capable of accommodating shell sand cores 4. An intermediate partition 5 is formed between the end cover sand core 3 and the shell sand core 4, and a cavity for accommodating the intermediate partition 5 is formed between the upper mold cavity and the lower mold cavity; wherein the end cover sand core 3, the shell sand core 4 and the intermediate partition 5 are an integrated structure.

[0028] The above technical solution modifies the sand core structure. Specifically, a central partition 5 is added to the sand core, integrating the shell sand core 4 and the end cap sand core 3. This allows the shell and cap to be produced simultaneously in the same mold, thereby improving the casting process yield and production efficiency. Furthermore, the need for a set of outer molds and sand core boxes is eliminated, reducing the cost and cycle of new product development and lowering the cost of mass production.

[0029] In this embodiment, when casting the differential casting, it is necessary to place the integrated sand core into the upper mold 1 or the lower mold 2, and then close the mold for shaping. In order to ensure that the sand core can be accurately placed in the predetermined position on the mold when installing, it is preferably as follows: Figure 3 and Figure 4 As shown, at least one positioning block 6 is circumferentially provided at the edge of the middle partition 5, and positioning grooves 7 are provided on the upper mold 1 and the lower mold 2 at positions corresponding to the positioning blocks 6. Thus, the mutual matching between the positioning blocks 6 and the positioning grooves 7 greatly improves installation accuracy and ensures a long casting cycle.

[0030] In this embodiment, in order to be able to use the same mold to cast the shell and the end cover at the same time, preferably, a main runner is formed at the center position of the upper mold 1, and the main runner forms a first-level runner on the left and right sides. The first-level runner forms a second-level runner in the upper and lower directions, and a plurality of final runners are formed on the secondary runner radiating outward, and each final runner is connected to the upper mold cavity.

[0031] Similarly, a main runner is preferably formed at the center of the lower mold 2, and the main runner forms a first-level runner on the left and right sides. The first-level runner forms a second-level runner in the upper and lower directions, and the second-level runner diverges outward to form multiple final runners, and each final runner is connected to the lower mold cavity.

[0032] The internal flow channels of the mold with the above structure are evenly and reasonably distributed, so that the subsequent molten metal flows smoothly and evenly during casting, and the casting effect of the finished product is further improved. On this basis, it is further preferred that multiple final runners are symmetrically distributed vertically and horizontally.

[0033] Furthermore, to further enhance the casting effect and prevent interference between the castings during the casting process, which could affect the casting's shape, each intermediate partition 5 is preferably formed with a chamfer 8 to prevent interference. Furthermore, the presence of the chamfer 8 complements the vertically and bilaterally symmetrical distribution of multiple final runners, meeting the casting process layout requirements.

[0034] Furthermore, to maximize the number of finished castings produced from the same mold, it is preferable that the upper or lower mold cavities, connected to multiple final runners, be fully distributed across the mold's mating surface. This allows all possible casting conditions to be utilized, maximizing the mold's casting yield and utilization.

[0035] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0036] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0037] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A differential casting housing cover integrated casting mold, characterized in that: The shell cover integrated casting mold of the differential casting comprises an upper mold (1) and a lower mold (2), wherein the upper mold (1) has a partially recessed upper mold surface formed with a plurality of upper mold cavities capable of accommodating end cover sand cores (3), and the lower mold (2) has a partially recessed upper mold surface formed with a plurality of lower mold cavities capable of accommodating shell sand cores (4), an intermediate partition (5) is formed between the end cover sand core (3) and the shell sand core (4), and a cavity for accommodating the intermediate partition (5) is formed between the upper mold cavity and the lower mold cavity; wherein the end cover sand core (3), the shell sand core (4) and the intermediate partition (5) are an integrated structure.

2. The housing cover integrated casting mold for differential casting according to claim 1, characterized in that: At least one positioning block (6) is provided along the circumferential direction at the edge of the middle partition (5), and positioning grooves (7) are provided at positions corresponding to the positioning block (6) on the upper mold (1) and the lower mold (2).

3. The housing cover integrated casting mold for differential casting according to claim 1, characterized in that: A main runner is formed at the center of the upper mold (1), and the main runner forms a first-level runner on the left and right sides, and the first-level runner forms a second-level runner in the upper and lower directions, and the second-level runner diverges outward to form a plurality of final runners, and each final runner is connected to the upper mold cavity.

4. The housing cover integrated casting mold for differential casting according to claim 1, characterized in that: A main runner is formed at the center of the lower mold (2), and the main runner forms a first-level runner on the left and right sides, and the first-level runner forms a second-level runner in the upper and lower directions, and the second-level runner diverges outward to form a plurality of final runners, and each final runner is connected to the lower mold cavity.

5. The housing cover integrated casting mold for a differential casting according to any one of claims 1 to 4, characterized in that: Each of the middle partition plates (5) is formed with a cut corner (8) for preventing interference.

6. The housing cover integrated casting mold for differential casting according to claim 3 or 4, characterized in that: The plurality of final runners are distributed symmetrically in the vertical direction and in the left-right direction.

7. The housing cover integrated casting mold for differential casting according to claim 6, characterized in that: The upper mold cavity or the lower mold cavity connected to the plurality of final runners is fully distributed on the mold mating surface.

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