A new type of motor shell lost foam

Abstract

The utility model provides a novel motor shell lost foam, including template and mould frame, the template is provided with the forming core, the inside of mould frame is provided with the outer core pulling slide, the outside of mould frame is provided with the outer core pulling cylinder, the output of outer core pulling cylinder penetrates mould frame and connects the outer core pulling slide, the forming core includes the core frame of hollow, the side part of core frame is provided with the core pulling ring groove, the core pulling ring groove links with the inner chamber of core frame, the inside of core frame is provided with movable support, the end of core frame is provided with the inner core pulling cylinder, the output of inner core pulling cylinder connects movable support, the core pulling ring groove is apart from and is provided with inner core pulling slide no.

Description

Technical Field

[0001] This utility model relates to a mold for producing motor housings, and more particularly, to a novel lost foam casting method for motor housings. Background Technology

[0002] Currently, Chinese patent CN214557178U discloses a casting mold for a motor housing, comprising an upper template, a mold shell, and a lower template arranged sequentially from top to bottom. Forming blocks are slidably mounted on the four side walls of the inner side of the mold shell. A driving device is provided on the outer side of the mold shell to drive the four forming blocks closer together or further apart. An upper mold core is provided on the upper template, and a lower mold core is provided on the lower template. Forming grooves are formed on the side walls of the four forming blocks near the upper mold core, forming cavities between the four forming blocks and the side walls of the upper and lower mold cores. One of the forming grooves has a junction box forming groove for forming a junction box. A sliding groove is provided on the side wall of the upper mold core opposite to the junction box forming groove, and a junction box forming block is slidably connected within the sliding groove. A driving component is provided inside the upper mold core to drive the junction box forming block into the sliding groove. During the use of the above casting mold, the junction box forming block and the driving component cooperate to pull the junction box portion of the motor housing, making demolding of the motor housing more convenient. However, for motor housings with inverted indentations on the inside, they still cannot be quickly demolded from the aforementioned casting mold after molding. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a new type of lost-wax casting for motor housing, which has the advantage of being able to be quickly demolded and removed after the motor housing with inverted buckles formed on the inside is formed.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a novel lost foam casting method for motor housings, comprising a template and a mold frame. The template is provided with a forming core, which extends into the inner cavity of the mold frame to form a mold cavity for forming the motor housing. An outer core-pulling slider is provided on the inner side of the mold frame, and an outer core-pulling cylinder is provided on the outer side of the mold frame. The output end of the outer core-pulling cylinder passes through the mold frame and is connected to the outer core-pulling slider to drive the outer core-pulling slider closer to or further away from the forming core. The forming core includes a hollow core frame. The side of the core is provided with a core-pulling ring groove, which is connected to the inner cavity of the core frame. A movable bracket is provided on the inner side of the core frame, and an inner core-pulling cylinder is provided at the end of the core frame. The output end of the inner core-pulling cylinder is connected to the movable bracket to drive the movable bracket to move along the axial direction of the core frame. An inner core-pulling slider one and an inner core-pulling slider two are arranged circumferentially in the core-pulling ring groove. The inner core-pulling slider one is connected to the movable bracket through a reversing transmission mechanism one, and the inner core-pulling slider two is connected to the movable bracket through a reversing transmission mechanism two. When the inner core-pulling cylinder drives the movable bracket to move axially along the core frame, the movable bracket will drive the inner core-pulling slider one and the inner core-pulling slider two to move radially along the core-pulling ring groove through the reversing transmission mechanism one and the reversing transmission mechanism two, respectively, and the moving speed of the inner core-pulling slider one is greater than the moving speed of the inner core-pulling slider two.

[0005] With the above technical solution, when the lost foam casting is used to produce the motor housing, the control template is engaged with the mold frame, so that the molded core extends into the inner cavity of the mold frame. The outer core-pulling cylinder drives the outer core-pulling slider to move to one side of the core until the outer core-pulling slider moves to the inner limit position. The inner core-pulling cylinder drives the movable bracket to move along the axial direction of the core frame. The core frame drives the inner core-pulling slider one and the inner core-pulling slider two to move radially outward along the core-pulling ring groove through the reversing transmission mechanism one and the reversing transmission mechanism two, respectively, until the inner core-pulling slider one and the inner core-pulling slider two move to the outer limit position. After the motor housing is formed, the outer core-pulling cylinder drives the outer core-pulling slider away from the core to pull the core out of the undercut formed on the outside of the motor housing. Simultaneously, the inner core-pulling cylinder drives the movable bracket to move in the opposite direction. The movable bracket, through reversing transmission mechanism one and reversing transmission mechanism two, respectively drives inner core-pulling slider one and inner core-pulling slider two to move radially inward along the core-pulling annular groove to pull the core out of the undercut formed inside the motor housing. Then, the external drive element controls the template to move away from the mold frame, allowing the formed motor housing to be removed. The moving speed of inner core-pulling slider one is greater than that of inner core-pulling slider two, thus minimizing interference between them during the core-pulling process of the inner undercut of the motor housing. In summary, the above-mentioned disappearing die has the advantage of allowing for rapid demolding and removal of the motor housing with undercuts formed on the inside after molding.

[0006] Preferably, both sides of the inner core-pulling slider one are provided with guide plane one, and the distance between the two guide planes one gradually decreases from the inside to the outside. Both sides of the inner core-pulling slider two are provided with guide plane two, and the guide plane two is used to fit with the guide plane one.

[0007] Through the above technical solution, the guide plane one and the guide plane two cooperate with each other, which can not only limit the inner core pulling slider one and the inner core pulling slider two to ensure that the inner core pulling slider one and the inner core pulling slider two are not likely to exceed the limit position of outward movement, but also provide a larger range of motion for the movement of the inner core pulling slider two during the core pulling process.

[0008] Preferably, a guide slope is provided on the side of the movable bracket opposite to the inner core-pulling slider, the guide slope facing the template, and a limiting guide groove is provided on the guide slope. The reversing transmission mechanism includes a limiting guide bar disposed on the inner core-pulling slider, the limiting guide bar being slidably disposed in the limiting guide groove. When the inner core-pulling cylinder drives the movable bracket to approach the template, the movable bracket will drive the inner core-pulling slider to move inward toward the core frame through the reversing transmission mechanism.

[0009] With the above technical solution, when the inner core-pulling cylinder drives the movable bracket to approach the template, the movable bracket will drive the inner core-pulling slider to move towards the inside of the core frame through the cooperation of the limiting guide groove and the limiting guide strip.

[0010] Preferably, a guide slope two is provided on the side of the movable bracket opposite to the inner core-pulling slider two. The guide slope two faces the template, and the inclination angle of the guide slope two is smaller than that of the guide slope one. A limit guide groove two is provided on the guide slope two. The reversing transmission mechanism two includes a limit guide bar two disposed on the inner core-pulling slider two. The limit guide bar two is slidably disposed in the limit guide groove two. When the inner core-pulling cylinder drives the movable bracket to approach the template, the movable bracket will drive the inner core-pulling slider two to move inward to the inner side of the core frame through the reversing transmission mechanism two.

[0011] With the above technical solution, when the inner core-pulling cylinder drives the movable bracket to approach the template, the movable bracket will drive the inner core-pulling slider two to move towards the inner side of the core frame through the cooperation of the limiting guide groove two and the limiting guide strip two.

[0012] Preferably, a limiting groove is provided on the inner side of the core-pulling ring groove, and both the inner core-pulling slider one and the inner core-pulling slider two are provided with limiting protrusions. The limiting protrusions are movably disposed in the limiting groove to limit the extreme positions of the movement of the inner core-pulling slider one and the inner core-pulling slider two to the outside of the core frame.

[0013] Through the above technical solution, the limiting groove and the limiting protrusion can be used to control the movement stroke of the inner core-pulling slider one and the inner core-pulling slider two.

[0014] Preferably, the core frame is provided with a control chamber, the control chamber is provided with a control connecting plate, and the control connecting plate is provided with a plurality of connecting rods along the circumference. The inner core-pulling cylinder is connected to the movable bracket through the control connecting plate and the plurality of connecting rods.

[0015] Through the above technical solution, the inner core-pulling cylinder is connected to the movable bracket via a control connecting plate and several connecting rods. Thus, the movement of the movable bracket is restricted by several connecting rods, making it more stable.

[0016] Preferably, the core frame includes an upper frame section, a middle frame section detachably disposed on the upper frame section, and a lower frame section detachably disposed on the middle frame section. The control chamber is formed by the upper frame section and the middle frame section, and the core-pulling ring groove is formed by the middle frame section and the lower frame section.

[0017] Through the above technical solution, the core frame is detachably connected by the upper section, middle section and lower section of the frame, making the assembly and disassembly process of the molded core more convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment; Figure 2 This is a schematic diagram of the mold frame structure; Figure 3 This is a schematic diagram of the molded core structure; Figure 4 A partial schematic diagram of the molded core. Figure 1 ; Figure 5 A partial schematic diagram of the molded core. Figure 2 .

[0019] Reference numerals: 1. Template; 2. Mold frame; 3. Molding core; 31. Core frame; 311. Upper section of frame; 312. Middle section of frame; 313. Lower section of frame; 32. Movable support; 33. Inner core-pulling cylinder; 34. Inner core-pulling slider one; 35. Inner core-pulling slider two; 36. Reversing transmission mechanism one; 37. Reversing transmission mechanism two; 4. Outer core-pulling slider; 5. Outer core-pulling cylinder; 6. Core-pulling ring groove; 7. Guide plane one; 8. Guide plane two; 9. Guide slope one; 10. Limiting guide groove one; 11. Guide slope two; 12. Limiting guide groove two; 13. Limiting groove; 14. Limiting protrusion; 15. Control chamber; 16. Control connecting plate; 17. Connecting support rod. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0021] A novel lost-cast molding process for motor housings, such as... Figures 1 to 5As shown, the system includes a template 1 and a mold frame 2. In this embodiment, there are two templates 1 symmetrically distributed at the upper and lower ends of the mold frame 2. A forming core 3 is provided at the end of the template 1 facing the mold frame 2. The forming core 3 extends into the inner cavity of the mold frame 2, thereby forming a mold cavity for forming the motor housing. The ends of the two forming cores 3 are snapped together. Several external core-pulling sliders 4 are provided on the inner side of the mold frame 2. The inner edges of the external core-pulling sliders 4 are joined together to form a complete outer wall of the motor housing. An external core-pulling cylinder 5 is provided on the outer side of the mold frame 2 opposite to the external core-pulling sliders 4. The output end of the external core-pulling cylinder 5 passes through the mold frame 2 and is connected to the corresponding external core-pulling slider 4 to drive the external core-pulling slider 4 to move closer to or away from the forming core 3.

[0022] The molding core 3 includes a hollow core frame 31. A core-pulling annular groove 6 is formed on the side of the core frame 31, and the groove communicates with the inner cavity of the core frame 31. A movable support 32 is provided inside the core frame 31, and an inner core-pulling cylinder 33 is provided at the end of the core frame 31. The output end of the inner core-pulling cylinder 33 is connected to the movable support 32 to drive the movable support 32 to move axially along the core frame 31. Inner core-pulling slider 1 34 and inner core-pulling slider 2 35 are circumferentially spaced in the core-pulling annular groove 6. Inner core-pulling slider 1 34 is connected to the movable support 32 through a reversing transmission mechanism 1 36, and inner core-pulling slider 2 35 is connected to the movable support 32 through a reversing transmission mechanism 2 37. When the inner core-pulling cylinder 33 drives the movable bracket 32 ​​to move axially along the core frame 31, the movable bracket 32 ​​will drive the inner core-pulling slider 34 and the inner core-pulling slider 35 to move radially along the core-pulling ring groove 6 through the reversing transmission mechanism 1 36 and the reversing transmission mechanism 2 37 respectively, and the moving speed of the inner core-pulling slider 34 is greater than the moving speed of the inner core-pulling slider 35.

[0023] The inner core-pulling slider 34 has guide planes 7 on both sides, and the distance between the two guide planes 7 gradually decreases from the inside to the outside. The inner core-pulling slider 35 has guide planes 8 on both sides, and the guide planes 8 are used to fit with the guide planes 7.

[0024] A guide slope 9 is provided on the side of the movable bracket 32 ​​opposite to the inner core-pulling slider 34. The guide slope 9 faces the template 1 and a limit guide groove 10 is provided on the guide slope 9. The reversing transmission mechanism 36 includes a limit guide bar provided on the inner core-pulling slider 34. The limit guide bar is slidably provided in the limit guide groove 10. When the inner core-pulling cylinder 33 drives the movable bracket 32 ​​to approach the template 1, the movable bracket 32 ​​will drive the inner core-pulling slider 34 to move inward to the core frame 31 through the reversing transmission mechanism 36.

[0025] A guide slope 11 is provided on the side of the movable bracket 32 ​​opposite to the inner core-pulling slider 35. The guide slope 11 faces the template 1, and the inclination angle of the guide slope 11 is less than that of the guide slope 9. A limit guide groove 12 is provided on the guide slope 11. The reversing transmission mechanism 37 includes a limit guide bar 2 provided on the inner core-pulling slider 35. The limit guide bar 2 is slidably provided in the limit guide groove 12. When the inner core-pulling cylinder 33 drives the movable bracket 32 ​​to approach the template 1, the movable bracket 32 ​​will drive the inner core-pulling slider 35 to move inward to the core frame 31 through the reversing transmission mechanism 37.

[0026] A limiting groove 13 is provided on the inner side of the core-pulling ring groove 6. Both the inner core-pulling slider 1 34 and the inner core-pulling slider 2 35 are provided with limiting protrusions 14. The limiting protrusions 14 are movably disposed in the limiting groove 13 to limit the extreme positions of the inner core-pulling slider 1 34 and the inner core-pulling slider 2 35 to move outward of the core frame 31.

[0027] The core frame 31 is provided with a control chamber 15, and the control chamber 15 is provided with a control connecting plate 16. Several connecting rods 17 are provided along the circumferential direction on the control connecting plate 16. The inner core pulling cylinder 33 is connected to the movable bracket 32 ​​through the control connecting plate 16 and the several connecting rods 17.

[0028] The core frame 31 includes an upper frame section 311, a middle frame section 312 detachably disposed in the upper frame section 311, and a lower frame section 313 detachably disposed in the middle frame section 312. The control chamber 15 is formed by the upper frame section 311 and the middle frame section 312. The core-pulling ring groove 6 is formed by the middle frame section 312 and the lower frame section 313.

[0029] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A novel lost foam casting method for motor housing, comprising a template (1) and a mold frame (2), wherein the template (1) is provided with a molding core (3), the molding core (3) extends into the inner cavity of the mold frame (2) to form a mold cavity for molding the motor housing, an outer core-pulling slider (4) is provided on the inner side of the mold frame (2), and an outer core-pulling cylinder (5) is provided on the outer side of the mold frame (2), the output end of the outer core-pulling cylinder (5) passing through the mold frame (2) and connected to the outer core-pulling slider (4) to drive the outer core-pulling slider (4) to move closer to or away from the molding core (3); characterized in that: The molding core (3) includes a hollow core frame (31). The core frame (31) has a core-pulling annular groove (6) on its side. The core-pulling annular groove (6) is connected to the inner cavity of the core frame (31). A movable bracket (32) is provided on the inner side of the core frame (31). An inner core-pulling cylinder (33) is provided at the end of the core frame (31). The output end of the inner core-pulling cylinder (33) is connected to the movable bracket (32) to drive the movable bracket (32) to move along the axial direction of the core frame (31). An inner core-pulling slider one (34) and an inner core-pulling slider two (35) are arranged circumferentially in the core-pulling annular groove (6). The inner core-pulling slider one (34) is connected to the movable bracket (32) through a reversing transmission mechanism one (36). The inner core-pulling slider two (35) is connected to the movable bracket (32) through a reversing transmission mechanism two (37). When the inner core-pulling cylinder (33) drives the movable bracket (32) to move along the axial direction of the core frame (31), the movable bracket (32) will drive the inner core-pulling slider one (34) and the inner core-pulling slider two (35) to move radially along the core-pulling ring groove (6) through the reversing transmission mechanism one (36) and the reversing transmission mechanism two (37), respectively, and the moving speed of the inner core-pulling slider one (34) is greater than the moving speed of the inner core-pulling slider two (35).

2. A new type of motor shell lost foam according to claim 1, characterized in that: The inner core-pulling slider 1 (34) has guide plane 1 (7) on both sides, and the distance between the two guide plane 1 (7) gradually decreases from the inside to the outside. The inner core-pulling slider 2 (35) has guide plane 2 (8) on both sides, and the guide plane 2 (8) is used to fit with the guide plane 1 (7).

3. A new type of motor shell lost foam according to claim 2, characterized in that: A guide slope (9) is provided on the side of the movable bracket (32) opposite to the inner core-pulling slider (34). The guide slope (9) faces the template (1). A limiting guide groove (10) is provided on the guide slope (9). The reversing transmission mechanism (36) includes a limiting guide bar provided on the inner core-pulling slider (34). The limiting guide bar is slidably disposed in the limiting guide groove (10). When the inner core-pulling cylinder (33) drives the movable bracket (32) to approach the template (1), the movable bracket (32) will drive the inner core-pulling slider (34) to move towards the inside of the core frame (31) through the reversing transmission mechanism (36).

4. A novel lost foam motor casing according to claim 3, characterized in that: A guide slope two (11) is provided on the side of the movable bracket (32) opposite to the inner core-pulling slider two (35). The guide slope two (11) faces the template (1), and the inclination angle of the guide slope two (11) is smaller than the inclination angle of the guide slope one (9). A limit guide groove two (12) is provided on the guide slope two (11). The reversing transmission mechanism two (37) includes a limit guide bar two provided on the inner core-pulling slider two (35). The limit guide bar two is slidably disposed in the limit guide groove two (12). When the inner core-pulling cylinder (33) drives the movable bracket (32) to approach the template (1), the movable bracket (32) will drive the inner core-pulling slider two (35) to move towards the inner side of the core frame (31) through the reversing transmission mechanism two (37).

5. A new type of motor shell lost foam according to claim 1, characterized in that: The inner side of the core-pulling ring groove (6) is provided with a limiting groove (13). The inner core-pulling slider one (34) and the inner core-pulling slider two (35) are both provided with limiting protrusions (14). The limiting protrusions (14) are movably disposed in the limiting groove (13) to limit the extreme positions of the inner core-pulling slider one (34) and the inner core-pulling slider two (35) moving outward of the core frame (31).

6. A new type of motor shell lost foam according to claim 1, characterized in that: The core frame (31) is provided with a control chamber (15), and the control chamber (15) is provided with a control connecting plate (16). Several connecting rods (17) are provided on the control connecting plate (16) along the circumferential direction. The inner core-pulling cylinder (33) is connected to the movable bracket (32) through the control connecting plate (16) and the several connecting rods (17).

7. A novel lost foam motor housing according to claim 6 characterized by: The core frame (31) includes an upper frame section (311), a middle frame section (312) detachably disposed on the upper frame section (311), and a lower frame section (313) detachably disposed on the middle frame section (312). The control chamber (15) is formed by the upper frame section (311) and the middle frame section (312). The core-pulling ring groove (6) is formed by the middle frame section (312) and the lower frame section (313).

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