Motor rear cover mold stable in machining and easy to adjust
By introducing structures such as limit plates, ball bearings, limit sliders, and electromagnetic brakes into the motor rear cover mold, the problem of insufficient matching accuracy between the moving mold and the fixed mold was solved, enabling rapid and stable mold adjustment and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-03
AI Technical Summary
The existing motor back cover mold has insufficient fitting precision between the movable mold and the fixed mold during installation, requiring frequent disassembly and adjustment, which is time-consuming and labor-intensive, and affects the stability of processing.
A mold comprising a mold body, a limiting plate, ball bearings, a limiting slider, and an electromagnetic brake was designed. By adjusting the combination of the lead screw and the electromagnetic brake, the mold can be precisely adjusted and stably fixed.
This improved the installation accuracy and processing stability of the motor rear cover mold, reduced adjustment time, and increased production efficiency.
Smart Images

Figure CN224073152U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor rear cover mold technology, specifically a motor rear cover mold that is stable to process and easy to adjust. Background Technology
[0002] Motor back cover molds are key tools for mass production of motor back covers. Their function is to ensure the dimensional accuracy, structural strength, and functional integrity of the back cover through precise structural design and molding process, so as to meet the needs of protecting internal motor components (such as coils, bearings, etc.), isolating the external environment (dustproof, waterproof, insulation), and providing heat dissipation or installation interfaces. The high efficiency and consistency of the mold can significantly improve production efficiency and reduce manufacturing costs. At the same time, it can adapt to the molding requirements of different materials (such as plastics and metals), ensuring the reliability and durability of the motor back cover under complex working conditions.
[0003] Chinese Patent Publication No. CN213378833U discloses a stamping die for a motor rear cover, including a lower die base and an upper die base capable of moving up and down along the lower die base. A motor rear cover punch is mounted on the lower die base, and a motor rear cover die cavity adapted to the punch is mounted on the upper die base. Several scrap ring cutting devices are mounted on the lower die base, distributed circumferentially around the motor rear cover punch. This technical solution features a novel structure and ingenious design. When the upper die base descends and the motor rear cover is stamped, the scrap ring cutting devices simultaneously cut the scrap ring of the motor rear cover into several small segments. These segments naturally scatter outwards without the need for material removal, solving the problem of slow and unsafe scrap ring removal in existing dies and improving the stamping efficiency of the motor rear cover.
[0004] Existing motor back cover molds have insufficient fitting accuracy between the movable and fixed molds during installation, requiring frequent disassembly and adjustment. This is not only time-consuming and labor-intensive, but also affects the fitting accuracy between the movable and fixed molds and the processing stability. Therefore, we propose a motor back cover mold that is stable in processing and easy to adjust. Utility Model Content
[0005] The purpose of this utility model is to provide a motor back cover mold that is stable in processing and easy to adjust, so as to solve the problem mentioned in the background art that the existing motor back cover molds have insufficient matching accuracy between the movable mold and the fixed mold during installation, requiring frequent disassembly and adjustment, which is not only time-consuming and labor-intensive, but also affects the matching accuracy between the movable mold and the fixed mold and affects the processing stability.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a stable and easily adjustable motor back cover mold, comprising:
[0007] The mold body has a mold base mounted on its lower part. The mold base has a connecting cavity inside, and a limit plate is installed inside the connecting cavity. A fixed cylinder is fixedly mounted above the limit plate, and a ball bearing is movably mounted inside the fixed cylinder. A first connecting block is fixedly mounted on the right side of the mold body. A limit groove is formed inside the first connecting block, and a limit slider is movably mounted inside the limit groove. A connecting plate is fixedly mounted on the right side of the limit slider, and an electromagnetic brake is mounted on the right side of the connecting plate. A first fixed block is fixedly mounted on the right side of the mold base, and a first adjusting screw passes through the first fixed block. A connecting bearing is mounted on the left side of the first adjusting screw. A second connecting block is fixedly mounted on the front end of the mold body.
[0008] As a preferred embodiment of the present invention, which provides a stable and easily adjustable motor back cover mold, the shape and size of the limiting plate are smaller than the shape and size of the connecting cavity. The limiting plate is fixedly connected to the mold body, the ball bearings are in contact with the inner wall of the connecting cavity, and the mold body is movably connected to the mold body through the connecting cavity and the limiting plate.
[0009] As a preferred embodiment of the present invention, which provides a stable and easily adjustable motor back cover mold, the limiting slider has a T-shaped structure, and the shape and size of the limiting slider partially match the shape and size of the inside of the limiting groove. The connecting plate is movably connected to the first connecting block through the limiting slider and the limiting groove.
[0010] As a preferred embodiment of the present invention, which provides a stable and easily adjustable motor rear cover mold, the first adjusting screw is threadedly connected to the first fixing block, and the first adjusting screw is movably connected to the connecting plate through the connecting bearing.
[0011] As a preferred embodiment of the present invention, which provides a stable and easily adjustable motor rear cover mold, the first adjusting screw passes through the interior of the electromagnetic brake.
[0012] As a preferred embodiment of this utility model of a motor rear cover mold that is stable in processing and easy to adjust, the mold base is further provided with:
[0013] The second fixing block is fixedly installed at the front end of the mold base, and the second fixing block is provided with a second adjusting screw.
[0014] Compared with the prior art, this utility model provides a motor rear cover mold that is stable in processing and easy to adjust, and has the following beneficial effects:
[0015] 1. This utility model, by setting a movable mold body, allows the first adjusting screw to adjust the position of the mold body, thereby making the upper and lower motor rear cover molds more precise and improving the production efficiency of the motor rear cover mold;
[0016] 2. This utility model uses an electromagnetic brake to restrict the adjustment of the first adjusting screw, preventing the first adjusting screw from rotating due to external forces such as vibration, which would affect the processing stability of the motor back cover mold. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the connection structure between the first adjusting screw and the connecting plate of this utility model;
[0019] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;
[0020] Figure 4 This is a schematic diagram of the connection structure between the mold body and the mold base of this utility model;
[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the fixed cylinder of this utility model.
[0022] In the figure: 1. Mold body; 2. Limiting slider; 3. Limiting groove; 4. Mold base; 5. First connecting block; 6. First fixing block; 7. First adjusting screw; 8. Electromagnetic brake; 9. Connecting plate; 10. Connecting bearing; 11. Connecting cavity; 12. Limiting plate; 13. Fixing cylinder; 14. Ball bearing; 15. Second adjusting screw; 16. Second fixing block; 17. Second connecting block. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-5A stable and easily adjustable motor back cover mold includes a mold body 1, a mold base 4 mounted below the mold body 1, a connecting cavity 11 inside the mold base 4, a limiting plate 12 installed inside the connecting cavity 11, a fixing cylinder 13 fixedly mounted above the limiting plate 12, and ball bearings 14 movably mounted inside the fixing cylinder 13. The shape and size of the limiting plate 12 are smaller than the shape and size of the connecting cavity 11. The limiting plate 12 is fixedly connected to the mold body 1, and the ball bearings 14 fit against the inner wall of the connecting cavity 11. The mold body 1 passes through the connecting cavity... 11 and the limiting plate 12 are movably connected to the mold body 1. A first connecting block 5 is fixedly installed on the right side of the mold body 1. A limiting groove 3 is formed inside the first connecting block 5. A limiting slider 2 is movably installed inside the limiting groove 3. A connecting plate 9 is fixedly installed on the right side of the limiting slider 2. The limiting slider 2 has a T-shaped structure. The shape and size of the limiting slider 2 partially match the shape and size inside the limiting groove 3. The connecting plate 9 is movably connected to the first connecting block 5 through the limiting slider 2 and the limiting groove 3. An electromagnetic brake 8 is installed on the right side of the connecting plate 9. A first fixing block 6 is fixedly installed on the right side of the mold base 4, and a first adjusting screw 7 is inserted inside the first fixing block 6. The first adjusting screw 7 passes through the interior of the electromagnetic brake 8, and a connecting bearing 10 is installed on the left side of the first adjusting screw 7. The first adjusting screw 7 is threadedly connected to the first fixing block 6, and the first adjusting screw 7 is movably connected to the connecting plate 9 through the connecting bearing 10. A second connecting block 17 and a second fixing block 16 are fixedly installed at the front end of the mold body 1. The second fixing block 16 is fixedly installed at the front end of the mold base 4, and a second adjusting screw 15 is inserted inside the second fixing block 16. By setting a movable mold body 1, the position of the mold body 1 can be adjusted by rotating the first adjusting screw 7, thereby making the upper and lower motor back cover molds more precise and improving the production effect of the motor back cover mold. At the same time, the electromagnetic brake 8 restricts the adjusted first adjusting screw 7 to prevent the first adjusting screw 7 from rotating due to vibration or other external forces, which would affect the processing stability of the motor back cover mold. The second fixing block 16 is fixedly installed at the front end of the mold base 4, and the second adjusting screw 15 is inserted inside the second fixing block 16.
[0025] Working principle: When using this stable and easily adjustable motor back cover mold, firstly, install two motor back cover molds onto the production equipment. Then, when the upper and lower motor back cover molds are not aligned, turn the first adjusting screw 7 inside the first fixing block 6 to push the mold body 1. This allows the mold body 1 to move laterally on the mold base 4 through the cooperation between the connecting cavity 11, the limiting plate 12, the fixing cylinder 13, and the ball bearing 14, thus pushing the mold body 1 to the appropriate position. Next, the electromagnetic brake 8 is energized to limit and fix the adjusted first adjusting screw 7. The electromagnetic brake 8 (model: FDB26N) is existing technology and will not be described in detail here. Similarly, rotate the second adjusting screw 15 to push the mold body 1 longitudinally, thereby adjusting the mold body 1 to the position opposite to the other motor back cover mold. This is the working principle of this stable and easily adjustable motor back cover mold.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A motor back cover mold that is easy to adjust and is stable in processing, characterized in that, Include: The mold body (1), the lower part of the mold body (1) is installed with the mold base (4), the inside of the mold base (4) is provided with a connecting cavity (11), the inside of the connecting cavity (11) is installed with a limiting plate (12), the upper part of the limiting plate (12) is fixedly installed with a fixed cylinder (13), the inside of the fixed cylinder (13) is movably installed with a ball (14), the right side of the mold body (1) is fixedly installed with a first connecting block (5), the inside of the first connecting block (5) is provided with a limiting sliding groove (3), the inside of the limiting sliding groove (3) is movably installed with a limiting sliding block (2), the right side of the limiting sliding block (2) is fixedly installed with a connecting plate (9), the right side of the connecting plate (9) is installed with an electromagnetic brake (8), the right side of the mold base (4) is fixedly installed with a first fixed block (6), the inside of the first fixed block (6) is provided with a first adjusting screw (7), the left side of the first adjusting screw (7) is installed with a connecting bearing (10), the front end of the mold body (1) is fixedly installed with a second connecting block (17).
2. A process stable easily adjustable motor back cover mold as claimed in claim 1 wherein, The shape and size of the limiting plate (12) is smaller than the shape and size of the connecting cavity (11), the limiting plate (12) is fixedly connected with the mold body (1), the ball (14) is in close contact with the inner wall of the connecting cavity (11), the mold body (1) is movably connected with the mold body (1) through the connecting cavity (11) and the limiting plate (12).
3. A process stable easily adjustable motor back cover mold as claimed in claim 1 wherein, The limiting sliding block (2) is T-shaped structure, the shape and size of the limiting sliding block (2) is partially matched with the shape and size of the limiting sliding groove (3), the connecting plate (9) is movably connected with the first connecting block (5) through the limiting sliding block (2) and the limiting sliding groove (3).
4. A process stable easily adjustable motor back cover mold as claimed in claim 1 wherein, The first adjusting screw (7) is threadedly connected with the first fixed block (6), the first adjusting screw (7) is movably connected with the connecting plate (9) through the connecting bearing (10).
5. A process stable easily adjustable motor back cover mold as claimed in claim 1 wherein, The first adjusting screw (7) penetrates the inside of the electromagnetic brake (8).
6. A process stable easily adjustable motor rear cover mold as claimed in claim 1 wherein, The mold base (4) is further provided with: The second fixed block (16) is fixedly installed at the front end of the mold base (4), the second fixed block (16) is provided with a second adjusting screw (15) penetrating through the inside.
Citation Information
Patent Citations
Motor rear cover stamping die
CN213378833U