A mold structure for producing motor housings
By introducing a movable outer semicircular block and an annular cooling cavity into the motor housing production mold, combined with an electric push rod and a locking assembly, the problem of slow mold cooling was solved, enabling rapid cooling and demolding of the motor housing and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO ZELIN PRECISION MOLD MANUFACTURING CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-30
Smart Images

Figure CN224426191U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of motor housing technology and relates to a mold structure for producing motor housings. Background Technology
[0002] During the production process, the motor housing is mainly formed by casting using a motor housing casting mold.
[0003] Traditional motor housing production molds lack internal cooling structures, hindering the rapid cooling and molding of fluids during production and impacting production efficiency. To address this, we designed a new mold structure for motor housing production to solve these technical problems. Summary of the Invention
[0004] The purpose of this utility model is to provide a mold structure for producing motor housings, so as to solve the problems mentioned in the background art.
[0005] The objective of this utility model can be achieved through the following technical solution: a mold structure for producing motor housing, comprising two bases, each base having a movable outer semicircular block at its top, and concentric semicircular inner blocks fixedly connected to the top of the bases within the two outer semicircular blocks, each semicircular inner block having an annular cooling cavity inside, each base having a water inlet pipe fixedly connected to the annular cooling cavity on one side, and the two water inlet pipes communicating with the annular cooling cavity, and the other end of the two annular cooling cavities having a water outlet pipe fixedly connected to the base.
[0006] In the above-mentioned mold structure for producing a motor housing, a convex groove is provided in the middle of the top of each of the two bases. A convex slider is slidably connected inside the convex groove. The top of the convex slider is fixedly connected to the center of the bottom of the outer semicircular block. An electric push rod is fixedly installed on one side wall of each of the two convex grooves. The telescopic end of the electric push rod is fixedly connected to the side of the convex slider.
[0007] In the above-mentioned mold structure for producing a motor housing, the bottom of each of the two outer semicircular blocks is fixedly provided with a sealing strip that is connected as one piece.
[0008] In the above-mentioned mold structure for producing a motor housing, a first fixing block is fixedly provided on both sides of one of the outer semicircular blocks, and a second fixing block is fixedly provided on both sides of the other outer semicircular block, which is aligned with the position of the first fixing block. A locking component is provided between the first fixing block and the second fixing block.
[0009] In the above-mentioned mold structure for producing a motor housing, the engaging assembly includes two L-shaped locking blocks. The side of the first fixing block has a groove, and two movable and symmetrically arranged L-shaped locking blocks are arranged inside the groove. The side of the second fixing block has a T-shaped groove, and the ends of the two L-shaped locking blocks are inserted into the inside of the T-shaped groove and engaged with the groove wall of the T-shaped groove.
[0010] In the above-mentioned mold structure for producing a motor housing, a bidirectional trapezoidal lead screw is rotatably connected between the top and bottom of the groove. The two ends of the bidirectional trapezoidal lead screw are threadedly connected to the middle of two L-shaped locking blocks. A butterfly rotating rod is fixedly installed at the top of the bidirectional trapezoidal lead screw through the groove.
[0011] In the above-mentioned mold structure for producing a motor housing, a limiting groove is provided on one side wall of the groove, and limiting sliders are fixedly provided at the ends of the two L-shaped blocks, and the two limiting sliders are slidably connected to the limiting groove.
[0012] Compared with the prior art, the advantages of the mold structure for producing motor housings of this utility model are as follows: the production mold for motor housings uses two movable outer semicircular blocks to facilitate the demolding of the formed motor housings. At the same time, the production mold uses an annular cooling cavity set in the semicircular inner insert to achieve water circulation cooling during the casting process, thereby improving the efficiency of motor housing casting. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the mold structure for producing an electric motor housing according to this utility model.
[0014] Figure 2 This is a schematic diagram of the connection structure between the first fixing block and the second fixing block of a mold structure for producing an electric motor housing according to this utility model.
[0015] Figure 3 This is a cross-sectional schematic diagram of the semi-circular inner insert of a mold structure for producing an electric motor housing according to this utility model.
[0016] In the diagram, 1. Base; 2. Outer semicircular block; 3. Sealing strip; 4. Water inlet pipe; 5. First fixing block; 6. Second fixing block; 7. Convex groove; 8. Electric push rod; 9. Convex slider; 10. Semicircular inner insert; 11. Water outlet pipe; 12. Groove; 13. Two-way trapezoidal lead screw; 14. Limiting slider; 15. Limiting groove; 16. T-slot; 17. L-shaped locking block; 18. Annular cooling chamber. Detailed Implementation
[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0018] like Figure 1-3 As shown, the present invention discloses a mold structure for producing a motor housing, comprising two bases 1, each base 1 having a movable outer semicircular block 2 at its top, and concentric semicircular inner inserts 10 fixedly connected to the top of the base 1 inside the two outer semicircular blocks 2, each semicircular inner insert 10 having an annular cooling cavity 18 inside, each base 1 having a water inlet pipe 4 fixedly connected to the annular cooling cavity 18 on one side, and the other end of the two annular cooling cavities 18 having a water outlet pipe 11 fixedly connected to the base 1.
[0019] Specifically, the production mold for the motor housing uses two movable outer semicircular blocks 2 to facilitate demolding of the formed motor housing. At the same time, the production mold uses an annular cooling cavity 18 set in the semicircular inner insert 10 to achieve water circulation cooling during the casting process, thereby improving the efficiency of the motor housing casting process.
[0020] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a mold structure for producing a motor housing. The top center of each of the two bases 1 is provided with a convex groove 7. A convex slider 9 is slidably connected inside the convex groove 7. The top of the convex slider 9 is fixedly connected to the center of the bottom of the outer semicircular block 2. An electric push rod 8 is fixedly installed on one side wall of each of the two convex grooves 7. The telescopic end of the electric push rod 8 is fixedly connected to the side of the convex slider 9.
[0021] Specifically, the electric push rod 8 pushes the convex slider 9 to move, and the movement of the convex slider 9 drives the movement of the outer semicircular block 2, which facilitates the demolding of the outer semicircular block 2.
[0022] Both outer semicircular blocks 2 have a sealing strip 3 fixedly attached to their bottoms.
[0023] Specifically, the sealing strip 3 ensures the airtightness between the outer semicircular block 2 and the base 1.
[0024] One of the outer semicircular blocks 2 has a first fixing block 5 fixed on both sides, and the other outer semicircular block 2 has a second fixing block 6 fixed on both sides, which is aligned with the first fixing block 5. A locking assembly is provided between the first fixing block 5 and the second fixing block 6. The locking assembly includes two L-shaped locking blocks 17. A groove 12 is provided on the side of the first fixing block 5. Two movable and symmetrically arranged L-shaped locking blocks 17 are provided inside the groove 12. A T-shaped groove 16 is provided on the side of the second fixing block 6. The ends of the two L-shaped locking blocks 17 are inserted into the inside of the T-shaped groove 16 and locked with the groove wall of the T-shaped groove 16.
[0025] Specifically, the two outer semicircular blocks 2 are tightly closed by engaging the L-shaped locking block 17 with the groove wall of the T-shaped groove 16.
[0026] A bidirectional trapezoidal lead screw 13 is rotatably connected between the top and bottom of the groove 12. The two ends of the bidirectional trapezoidal lead screw 13 are threadedly connected to the middle of two L-shaped locking blocks 17. A butterfly rotating rod is fixedly installed at the top of the bidirectional trapezoidal lead screw 13 through the groove 12.
[0027] Specifically, the rotation of the butterfly-shaped rotating rod drives the two L-shaped locking blocks 17 to move towards the center or to the sides, facilitating the closure of the two outer semicircular blocks 2.
[0028] A limiting groove 15 is provided on one side of the groove wall of the groove 12, and a limiting slider 14 is fixedly provided at the end of each of the two L-shaped blocks 17. The two limiting sliders 14 are slidably connected to the limiting groove 15.
[0029] Specifically, through the cooperation of the limiting slider 14 and the limiting groove 15, the L-shaped locking block 17 can be limited during the rotation of the bidirectional trapezoidal screw 13.
[0030] In specific implementation, when using the mold structure produced by this motor housing, firstly, the two semi-circular inner inserts 10 are brought into contact. Then, the electric push rod 8 is turned on, and the convex slider 9 is moved by the electric push rod 8. The movement of the convex slider 9 drives the outer semi-circular blocks 2 to move, so that the two outer semi-circular blocks 2 are brought into contact. When the two outer semi-circular blocks 2 are brought into contact, the two L-shaped locking blocks 17 on the side of the first fixing block 5 are inserted into the T-shaped groove 16 opened on the side of the second fixing block 6. Then, the butterfly rotating rod is manually rotated, which drives the bidirectional trapezoidal screw 13 to rotate. The rotation of the bidirectional trapezoidal screw 13 drives the two convex sliders 9 to move to the top and bottom. The movement of the convex sliders 9 drives the movement of the L-shaped locking block 17, so that the top of the L-shaped locking block 17 engages with the groove wall of the T-shaped groove 16, completing the mold locking between the two outer semicircular blocks 2. Then, the motor housing is poured. During the pouring process, the external water pump is turned on, and water flows from the water inlet pipe 4 into the annular cooling chamber 18. The water in the annular cooling chamber 18 flows through the water outlet pipe 11, which can accelerate the rapid cooling and molding of the fluid inside the mold and improve the processing efficiency of the motor housing.
[0031] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.
Claims
1. A mold structure for producing a motor case, comprising two bases (1), characterized in that, Each of the two bases (1) has a movable outer semicircular block (2) at its top. Inside each of the two outer semicircular blocks (2) are concentric semicircular inner blocks (10) that are fixedly connected to the top of the base (1). Each of the two semicircular inner blocks (10) has an annular cooling cavity (18) inside. Each of the two bases (1) has a water inlet pipe (4) fixedly connected to one side. The two water inlet pipes (4) are connected to the annular cooling cavity (18). The other end of each of the two annular cooling cavities (18) is fixedly connected to the base (1) with a water outlet pipe (11).
2. The mold structure for producing a motor case according to claim 1, wherein A convex groove (7) is provided at the middle of the top of each of the two bases (1). A convex slider (9) is slidably connected inside the convex groove (7). The top of the convex slider (9) is fixedly connected to the center of the bottom of the outer semicircular block (2). An electric push rod (8) is fixedly installed on one side of each of the two convex grooves (7). The telescopic end of the electric push rod (8) is fixedly connected to the side of the convex slider (9).
3. The mold structure for producing a motor housing according to claim 2, characterized in that, The bottom of each of the two outer semicircular blocks (2) is fixedly provided with a sealing strip (3) that is connected as one piece.
4. The mold structure for producing a motor housing according to claim 3, characterized in that, One of the outer semicircular blocks (2) is fixedly provided with a first fixing block (5) on both sides, and the other outer semicircular block (2) is fixedly provided with a second fixing block (6) on both sides, which is aligned with the first fixing block (5). A locking component is provided between the first fixing block (5) and the second fixing block (6).
5. The mold structure for producing a motor housing according to claim 4, characterized in that, The engaging assembly includes two L-shaped locking blocks (17). The side of the first fixing block (5) is provided with a groove (12). The inside of the groove (12) is provided with two movable and symmetrically arranged L-shaped locking blocks (17). The side of the second fixing block (6) is provided with a T-shaped groove (16). The ends of the two L-shaped locking blocks (17) are inserted into the inside of the T-shaped groove (16) and engaged with the groove wall of the T-shaped groove (16).
6. The mold structure for producing a motor housing according to claim 5, characterized in that, A bidirectional trapezoidal screw (13) is rotatably connected between the top and bottom of the groove (12). The two ends of the bidirectional trapezoidal screw (13) are threadedly connected to the middle of two L-shaped blocks (17). A butterfly rotating rod is fixedly installed at the top of the bidirectional trapezoidal screw (13) through the groove (12).
7. The mold structure for producing a motor housing according to claim 6, characterized in that, A limiting groove (15) is provided on one side of the groove (12), and a limiting slider (14) is fixedly provided at the ends of the two L-shaped blocks (17), and the two limiting sliders (14) are slidably connected to the limiting groove (15).