Precoated sand motor shell inner container sand mold and casting mold
By using an integrated cylindrical inner liner and casting mold design, the problem of molten iron leakage caused by the segmented splicing of the motor housing inner liner was solved, enabling high-quality and low-cost motor housing production.
Patent Information
- Application Number
- CN202520218434.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-11
AI Technical Summary
The existing motor housing inner liner sand mold, pouring cup and sprue adopt a segmented splicing structure, which leads to a high risk of molten iron leakage, affects product quality and is inconvenient to assemble.
Design an integrally molded cylindrical inner liner, with the pouring cup and sprue integrally connected to the cylindrical inner liner, and equipped with a casting mold including an upper module, a lower module, a cylindrical core-pulling block, a sprue core-pulling block, and a pouring cup core-pulling block, to achieve simultaneous molding of the inner liner, pouring cup, and sprue.
It reduces seams, prevents molten iron leakage, improves the processing quality and yield of motor housing products, saves labor time, reduces material costs, and simplifies the process.
Smart Images
Figure CN223642733U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of coated sand mold technology, specifically relating to a coated sand motor housing inner liner sand mold and casting mold. Background Technology
[0002] Currently, the coated sand molds used to prepare motor housings include an inner liner, a pouring cup, a runner, and a side plate mold located outside the inner liner. The inner liner mold, pouring cup, and runner are usually formed by splicing multiple sand mold shells, which increases the number of seams, easily causes molten iron leakage, affects product quality, and makes assembly inconvenient. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a coated sand motor housing inner liner sand mold and casting mold, which solves the technical problems such as the impact on product quality caused by the segmented splicing structure of the inner liner sand mold, pouring cup and sprue in the current preparation of motor housing products.
[0004] To solve the above problems, the technical solution of this utility model is as follows: a coated sand motor housing inner liner sand mold, including a cylindrical inner liner, with openings at both axial ends of the cylindrical inner liner, and an integrally formed pouring cup and runner at one end of the cylindrical inner liner opening, the pouring cup, runner and cylindrical inner liner being integrally formed and connected; there are several runners, the inlets of the several runners are all connected to the outlets of the pouring cups, and several through flow holes are opened on the side wall of the cylindrical inner liner, the flow holes being connected to the outlets of the runners one by one.
[0005] Furthermore, the cylindrical inner liner has several inner liner units with the same outer contour distributed along its axial direction, and each inner liner unit is used as an inner liner sand mold for manufacturing a motor housing.
[0006] Furthermore, the cylindrical inner liner has a partition section between two adjacent inner liner units, and several protrusions are integrally formed on the outer peripheral wall of the partition section.
[0007] Another objective of this utility model is to provide a sand casting mold for a coated sand motor housing inner liner, which is used to manufacture the aforementioned coated sand motor housing inner liner sand mold, and the casting mold includes:
[0008] The upper module has an upper mold cavity that conforms to the outline of a portion of the outer peripheral wall of the cylindrical inner liner;
[0009] The lower module has a lower mold cavity that matches the outer periphery of another part of the cylindrical inner liner; the upper module and the lower module are fastened together to form a cavity for manufacturing the cylindrical inner liner; the joint between the upper module and the lower module has several feeding channels.
[0010] A cylindrical core-pulling block is detachably and fixedly installed in the cavity. A cavity is formed between the cylindrical core-pulling block and the inner wall of the cavity to manufacture a cylindrical inner liner. A slot is opened at the upper end of the cylindrical core-pulling block, and the slot penetrates the side wall of the cylindrical core-pulling block.
[0011] The sprue core-pulling block has one part suspended in the slot and the other part extending into the cavity, and one end of the other part of the sprue core-pulling block is matched and inserted into the relief groove opened on the surface of the mold cavity of the opposite module.
[0012] The lower part of the pouring cup core-pulling block is fixedly connected to one end of the pouring channel core-pulling block located in the slot; the pouring cup core-pulling block is suspended in the pouring cup cavity formed by the upper module and the lower module being fastened together;
[0013] Heating device, installed in the upper module and / or lower module.
[0014] Furthermore, the core-pulling block of the pouring cup has a locking part, which abuts against the outer wall of the upper module and the lower module.
[0015] Furthermore, the joint between the upper and lower modules has a temperature measuring hole for installing thermocouples.
[0016] Furthermore, a sprue core-pulling block is installed at the joint between the upper and lower modules. The sprue core-pulling block is connected to the outer end of the sprue core-pulling block. Mounting holes are opened on the sprue core-pulling block for installing heating devices.
[0017] Furthermore, after the upper and lower modules are engaged, they form a first positioning port and a second positioning port. A portion of the cylindrical core-pulling block is positioned in the first positioning port, and a portion of the pouring cup core-pulling block is positioned in the second positioning port.
[0018] Furthermore, the opening size of the feed channel gradually increases from the outside to the inside.
[0019] Furthermore, there are four core-pulling blocks for the gating system, which are connected together in a cross shape. The slots are matching cross slots, and the lower end of the core-pulling block for the pouring cup is fixedly connected to the middle of the cross-shaped core-pulling block for the gating system.
[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0021] This utility model discloses a coated sand mold for the inner liner of a motor housing. It comprises an integrally connected cylindrical inner liner, pouring cup, and sprue, reducing the number of parts, minimizing seams, preventing molten iron leakage, and improving the processing quality of the motor housing product. The cylindrical inner liner contains several inner liner units, allowing multiple motor housing products to be manufactured at once using a single pouring cup, reducing excess processing and saving time. The integrally formed inner liner sand mold is prepared using an upper module, lower module, cylindrical core-pulling block, sprue core-pulling block, and pouring cup core-pulling block. This simple structure improves the quality of the sand mold and the manufacturing yield. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of the inner liner sand mold of the coated sand motor housing in Example 1;
[0023] Figure 2 This is a schematic diagram of the casting mold in Example 2;
[0024] Figure 3 This is a first-view exploded view of the casting mold in Example 2;
[0025] Figure 4 This is a second-view exploded view of the casting mold in Example 2;
[0026] Figure 5 This is a cross-sectional schematic diagram of the casting mold in Example 2.
[0027] Reference numerals: 1. Cylindrical inner liner; 11. Flow hole; 12. Inner liner unit; 13. Divider section; 131. Protrusion; 2. Pour cup; 3. Sprue; 4. Upper module; 41. Upper mold cavity; 42. Feed channel; 43. Temperature measuring hole; 44. Sprue core-pulling block; 441. Mounting hole; 45. First positioning port; 46. Second positioning port; 47. Relief groove; 5. Lower module; 51. Lower mold cavity; 6. Cylindrical core-pulling block; 61. Slot; 7. Sprue core-pulling block; 8. Pour cup core-pulling block; 81. Locking part; 9. Embedded block. Detailed Implementation
[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.
[0029] Example 1: As Figure 1 As shown, this embodiment provides a coated sand motor housing inner liner sand mold, including a cylindrical inner liner 1. The cylindrical inner liner 1 has openings at both axial ends. One end of the cylindrical inner liner 1 has an integrally formed pouring cup 2 and a runner 3. The pouring cup 2, the runner 3, and the cylindrical inner liner 1 are all integrally formed and connected. There are several runners 3. The inlets of the several runners 3 are all connected to the outlets of the pouring cup 2. Several through flow holes 11 are opened on the side wall of the cylindrical inner liner 1. The flow holes 11 are connected to the outlets of the runners 3 one by one.
[0030] With the above settings, the use of an integrally molded cylindrical inner liner 1 prevents molten iron from leaking from one side of the cylindrical inner liner 1 during the manufacturing of the motor housing. This results in a more uniform wall thickness, better roundness, better dimensional consistency, saving time and facilitating assembly.
[0031] In this embodiment, a coated sand mold for an inner liner of a motor housing has several inner liner units 12 with the same outer contour distributed along its axial direction. Each inner liner unit 12 serves as the inner liner mold for manufacturing one motor housing. This arrangement allows multiple motor housing products to be manufactured at once using a single pouring cup 2, saving material costs and reducing excess processing.
[0032] In this embodiment, a coated sand mold for a motor housing inner liner includes a partition section 13 on the cylindrical inner liner 1 between two adjacent inner liner units 12. Several protrusions 131 are integrally formed on the outer peripheral wall of the partition section 13. The partition section 13 works in conjunction with the motor housing side plate sand mold on the outer periphery of the cylindrical inner liner 1 to integrally form a connecting section to connect two adjacent motor housings. By cutting the connecting section, it is easier to separate adjacent motor housings later, improving the yield rate and preventing two motor housings from being directly connected. In this embodiment, there are two inner liner units 12, allowing for the manufacture of two motor housing products at once.
[0033] In this embodiment, a coated sand mold for an inner liner of a motor housing has several gating channels 3 evenly distributed within a cylindrical inner liner 1, and several flow holes 11 circumferentially distributed on the outer wall of the cylindrical inner liner 1. In this embodiment, there are four gating channels 3 and four flow holes 11, with the four gating channels 3 forming a cross-shaped structure. This arrangement facilitates the even distribution and rapid filling of molten iron on the outer circumference of the cylindrical inner liner 1, improving processing efficiency and product quality.
[0034] Example 2: Figures 1-5As shown, this embodiment provides a sand casting mold for a coated sand motor housing liner. This casting mold is used to manufacture a coated sand motor housing liner sand mold as described in Embodiment 1. The casting mold includes an upper module 4, a lower module 5, a cylindrical core-pulling block 6, a sprue core-pulling block 7, a pouring cup core-pulling block 8, and a heating device. The upper module 4 has an upper mold cavity 41 that matches the outline of a portion of the outer peripheral wall of the cylindrical liner 1; the lower module 5 has a lower mold cavity 51 that matches the outline of another portion of the outer peripheral wall of the cylindrical liner 1; the upper module 4 and the lower module 5 are fastened together to form a cavity for manufacturing the cylindrical liner 1; the joint between the upper module 4 and the lower module 5 has several feeding channels 42 that communicate with the cavity; the cylindrical core-pulling block 6 is detachably and fixedly installed in the cavity, and an annular cavity is formed between the cylindrical core-pulling block 6 and the inner wall of the cavity to manufacture the cylindrical liner 1; a slot 61 is opened at the upper end of the cylindrical core-pulling block 6, and the slot 61 penetrates the cylindrical core-pulling block. The side wall of 6; one part of the sprue core-pulling block 7 is suspended in the slot 61, the other part of the sprue core-pulling block 7 extends into the cavity, and one end of the other part of the sprue core-pulling block 7 is matched and inserted into the relief groove 47 opened in the inner wall of the mold cavity of the opposite module, thereby forming a flow hole 11; the lower part of the pouring cup core-pulling block 8 is fixedly connected to one end of the sprue core-pulling block 7 located in the slot 61, thereby making the pouring cup 2 and the sprue 3 integrally connected; the pouring cup core-pulling block 8 is suspended in the cavity of the pouring cup 2 formed by the upper module 4 and the lower module 5; the heating device is installed at the upper module 4 and / or the lower module 5.
[0035] Through the above setup, the simultaneous manufacturing of the integrally formed cylindrical inner liner 1, pouring cup 2, and sprue 3 is achieved through the cooperation of the upper module 4, lower module 5, cylindrical core-pulling block 6, sprue core-pulling block 7, pouring cup core-pulling block 8, and heating device. This saves on processes, improves the quality of the coated sand motor housing inner liner sand mold, and uses the motor housing inner liner sand mold prepared by this casting mold to produce motor housing products, thereby improving the quality of motor housing products and reducing the scrap rate. The slot 61 of the upper module 4, lower module 5, cylindrical core-pulling block 6, and sprue core-pulling block 7 cooperate to form the sprue 3, while the upper module 4, lower module 5, and pouring cup core-pulling block 8 cooperate to form the pouring cup 2.
[0036] In this embodiment of a coated sand motor housing inner liner sand casting mold, the pouring cup core-pulling block 8 has a locking part 81. The locking block is located outside the upper module 4 and the lower module 5, and the locking part 81 abuts against the outer walls of the upper module 4 and the lower module 5. This arrangement facilitates the suspension of the pouring cup core-pulling block 8 in the cavity formed by the upper module 4 and the lower module 5, resulting in a simple structure.
[0037] In a sand casting mold for an inner liner of a coated sand motor housing according to this embodiment, a temperature measuring hole 43 is provided at the joint between the upper module 4 and the lower module 5. The temperature measuring hole 43 is used to install a thermocouple.
[0038] In a sand casting mold for an inner liner of a coated sand motor housing according to this embodiment, a sprue core-pulling block 44 is installed at the joint between the upper module 4 and the lower module 5. The sprue core-pulling block 44 is connected to the outer end of the gating core-pulling block 7. An installation hole 441 is provided on the sprue core-pulling block 44, and a heating device is installed in the installation hole 441. The heating device can be a heating rod.
[0039] In this embodiment of a coated sand motor housing inner liner sand casting mold, the upper module 4 and the lower module 5 are engaged to form a first positioning port 45 and a second positioning port 46. A portion of the cylindrical core-pulling block 6 is positioned in the first positioning port 45, and a portion of the pouring cup core-pulling block 8 is positioned in the second positioning port 46. This arrangement improves the installation stability of the cylindrical core-pulling block 6 and the pouring cup core-pulling block 8, thereby increasing the yield.
[0040] In a coated sand motor housing inner liner sand casting mold of this embodiment, the opening size of the feed channel 42 gradually increases from the outside to the inside.
[0041] In this embodiment of a coated sand motor housing inner liner sand casting mold, there are four sprue core-pulling blocks 7, which are connected together in a cross shape. The slots 61 are matching cross slots 61. The lower end of the pouring cup core-pulling block 8 is fixedly connected to the middle of the cross-shaped sprue core-pulling block 7, and the locking part 81 is located at the upper end of the pouring cup core-pulling block 8. Four clearance grooves 47 are opened on the inner wall of the cavity for the four ends of the sprue core-pulling blocks 7 to extend into. Feed channels 42, temperature measuring holes 43 and sprue core-pulling blocks 44 are provided at the joints on both sides of the upper module 4 and the lower module 5. Each side has several feed channels 42 to improve feeding efficiency and make the material evenly distributed in the cavity. On the cross-shaped sprue core-pulling block 7, one set of two opposite ends is integrally connected to two sprue core-pulling blocks 44. The other set of two opposite ends has an integrally formed embedded block 9. The cross-sectional size of the embedded block 9 is larger than the opening size of the sprue 3 after molding.
Claims
1. A coated sand motor housing inner liner sand mold, characterized in that, The cylindrical inner liner (1) has openings at both ends of its axial direction. One end of the cylindrical inner liner (1) has an integrally formed pouring cup (2) and a runner (3). The pouring cup (2), the runner (3) and the cylindrical inner liner (1) are integrally formed and connected. There are several runners (3). The inlets of the several runners (3) are connected to the outlets of the pouring cup (2). Several through flow holes (11) are opened on the side wall of the cylindrical inner liner (1). The flow holes (11) are connected to the outlets of the runners (3) one by one.
2. The coated sand motor housing inner liner sand mold according to claim 1, characterized in that, The cylindrical inner liner (1) has several inner liner units (12) with the same outer contour distributed along its axial direction. Each inner liner unit (12) is used as an inner liner sand mold for manufacturing a motor housing.
3. The coated sand motor housing inner liner sand mold according to claim 2, characterized in that, The cylindrical inner liner (1) has a partition section (13) between two adjacent inner liner units (12), and several protrusions (131) are integrally provided on the outer peripheral wall of the partition section (13).
4. A sand casting mold for the inner liner of a coated sand motor housing, characterized in that, The casting mold is used to manufacture a coated sand motor housing inner liner sand mold according to any one of claims 1-3, and the casting mold comprises: The upper module (4) has an upper mold cavity (41) that conforms to the outline of a portion of the outer peripheral wall of the cylindrical inner liner (1); The lower module (5) has a lower mold cavity (51) that is consistent with the outer periphery contour of another part of the cylindrical inner liner (1); the upper module (4) and the lower module (5) are fastened together to form a cavity for manufacturing the cylindrical inner liner (1); the joint between the upper module (4) and the lower module (5) has several feeding channels (42); A cylindrical core-pulling block (6) is detachably and fixedly installed in the cavity. A cavity is formed between the cylindrical core-pulling block (6) and the inner wall of the cavity to manufacture a cylindrical inner liner (1). A slot (61) is opened at the upper end of the cylindrical core-pulling block (6), and the slot (61) penetrates the side wall of the cylindrical core-pulling block (6). The sprue core-pulling block (7) has a portion suspended in the slot (61) and another portion extending into the cavity. One end of the other portion of the sprue core-pulling block (7) is matched and inserted into the relief groove (47) opened on the surface of the mold cavity of the opposite module. The lower part of the pouring cup core-pulling block (8) is fixedly connected to one end of the pouring channel core-pulling block (7) located in the slot (61); the pouring cup core-pulling block (8) is suspended in the pouring cup cavity formed by the upper module (4) and the lower module (5) being fastened together; A heating device is installed in the upper module (4) and / or the lower module (5).
5. The coated sand motor housing inner liner sand casting mold according to claim 4, characterized in that, The core-pulling block (8) of the pouring cup has a locking part (81), which abuts against the outer walls of the upper module (4) and the lower module (5).
6. The coated sand motor housing inner liner sand casting mold according to claim 4, characterized in that, The joint between the upper module (4) and the lower module (5) has a temperature measuring hole (43), which is used to install a thermocouple.
7. The coated sand motor housing inner liner sand casting mold according to claim 4, characterized in that, A sprue core-pulling block (44) is installed at the joint between the upper module (4) and the lower module (5). The sprue core-pulling block (44) is connected to the outer end of the gating core-pulling block (7). An installation hole (441) is opened on the sprue core-pulling block (44), and a heating device is installed in the installation hole (441).
8. The coated sand motor housing inner liner sand casting mold according to claim 4, characterized in that, After the upper module (4) and the lower module (5) are engaged, a first positioning port (45) and a second positioning port (46) are formed. A part of the cylindrical core-pulling block (6) is positioned in the first positioning port (45), and a part of the pouring cup core-pulling block (8) is positioned in the second positioning port (46).
9. The coated sand motor housing inner liner sand casting mold according to claim 4, characterized in that, The opening size of the feed channel (42) gradually increases from the outside to the inside.
10. A sand casting mold for an inner liner of a coated sand motor housing according to claim 4, characterized in that, There are four sprue core-pulling blocks (7), which are connected together in a cross shape. The slot (61) is a matching cross slot (61). The lower end of the pouring cup core-pulling block (8) is fixedly connected to the middle of the cross-shaped sprue core-pulling block (7).