Die core structure of buckled water-cooled motor casing extrusion die
By designing the core structure of the buckle-in water-cooled motor case extrusion die, the problems of low roundness accuracy and serious eccentricity caused by traditional mold structures are solved, and higher molding accuracy and quality are achieved, reducing production costs.
Patent Information
- Application Number
- CN202422150271.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-03
AI Technical Summary
Traditional mold structures lead to low roundness and serious eccentricity of the inner holes of extruded aluminum profiles, which affects product size, noise, failure rate and strength, increases production costs, and restricts domestic production and promotion.
A die core structure of a buckle-in water-cooled motor case extrusion die is designed, including an upper die, a lower die, a large die core, a boss cylinder, a buckle-in die core and a small die core. By opening a U-shaped groove on the boss cylinder and designing the lugs of the buckle-in die core to cooperate with the U-shaped groove, the contact area and accuracy are increased, and the buckle-in die core is fixed through a stop on the large die core to improve stability and reliability.
It improves the matching accuracy and stability of the core structure, simplifies the assembly and disassembly of the mold core, reduces production costs, and improves the forming accuracy and quality of the motor case.
Smart Images
Figure CN222985288U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of extrusion dies, in particular to a core structure of a snap-in water-cooled motor shell extrusion die. Background Art
[0002] At present, the shells of water-cooled motors of new energy electric vehicles in China adopt extruded aluminum profiles, which have obvious advantages compared with traditional cast shells. However, there are two prominent problems: one is that the inner holes of the profiles are prone to large ovality, that is, the roundness accuracy is low, resulting in out-of-tolerance product dimensions or scrapping, as well as high noise and high failure rate during motor operation; the other is that there is a large eccentricity in the inner holes of the profiles, resulting in serious uneven wall thickness of the profiles, affecting the strength of the products and the safety during use. The root cause of these problems is the die structure. The traditional die structure form leads to complex and difficult die processing, low accuracy that can be achieved after processing, especially poor symmetry and large cumulative errors, affecting the uneven metal flow velocity in each part during extrusion forming and resulting in product quality problems. At the same time, the die has a long manufacturing cycle, poor interchangeability and low service life, resulting in high production costs of the profiles, restricting the localization and popularization of water-cooled motor shell profiles.
[0003] Therefore, it is necessary to provide a new core structure of a snap-in water-cooled motor shell extrusion die to solve the above technical problems. Summary of the Utility Model
[0004] In order to overcome the defects of the prior art, the utility model provides a core structure of a snap-in water-cooled motor shell extrusion die to solve the above problems.
[0005] The core structure of the snap-in water-cooled motor shell extrusion die provided by the utility model includes: an upper die; a lower die is connected to one side of the upper die; wherein, a large core is arranged in the upper die, and a boss cylinder is connected to the side of the large core close to the lower die, and a snap-in core matching with the boss cylinder is arranged in the lower die; a plurality of shunt openings are equidistantly arranged along the axis on the upper die, and the shunt openings are located on the circumferential side of the boss cylinder.
[0006] Preferably, one end of the boss cylinder close to the lower die extends to the outside of the upper die, and a U-shaped groove is arranged on the outer side of the boss cylinder.
[0007] Preferably, the U-shaped groove is located at one end of the boss cylinder close to the lower die.
[0008] Preferably, two convex ears are arranged on the side of the snap-in core close to the upper die, and the two convex ears are arranged oppositely.
[0009] Preferably, a sliding groove for the convex ears to pass through is arranged through the boss cylinder, and the sliding groove is communicated with the U-shaped groove.
[0010] Preferably, a stopper is connected to one side of the large die core close to the boss cylinder by screws.
[0011] Preferably, a small die core is connected to the outside of the large die core in the upper die, and the inner side of one end of the small die core close to the boss cylinder is attached to the outside of the snap-in die core.
[0012] Compared with the related art, the die core structure of the snap-in water-cooled motor housing extrusion die provided by the present utility model has the following beneficial effects:
[0013] By opening a U-shaped groove on the boss cylinder and designing the lug of the snap-in die core to cooperate with the U-shaped groove, the present utility model increases the contact area between the boss cylinder and the snap-in die core, improves the fitting accuracy. At the same time, by connecting a stopper to the large die core, the fixation and constraint of the snap-in die core are realized, and the stability and reliability of the die core structure are improved.
[0014] Due to the adoption of the snap-in structure, the present utility model makes the assembly and disassembly of the die core more convenient, can be quickly replaced and maintained, improves the production efficiency, and by attaching the small die core to the outside of the snap-in die core, it ensures that a tight fit is formed between the small die core and the snap-in die core during the extrusion molding process, improving the molding accuracy and quality of the motor housing. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of a preferred embodiment of the die core structure of the snap-in water-cooled motor housing extrusion die provided by the present utility model;
[0016] Figure 2 is Figure 1 a schematic structural diagram of the boss cylinder shown;
[0017] Figure 3 is Figure 1 a schematic structural diagram of the upper die shown;
[0018] Figure 4 is Figure 1 a schematic structural diagram of the lower die shown.
[0019] Reference numerals in the figures: 1, upper die; 2, lower die; 3, boss cylinder; 4, snap-in die core; 5, diversion port; 6, large die core; 7, stopper; 8, small die core; 31, U-shaped groove; 41, lug. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0021] The following describes the specific implementation of the present utility model in detail in conjunction with specific embodiments.
[0022] A core structure of a snap-in water-cooled motor housing extrusion die provided by an embodiment of the present utility model. The core structure of the snap-in water-cooled motor housing extrusion die includes: an upper die 1; a lower die 2 is connected to one side of the upper die 1; wherein, a large core 6 is arranged in the upper die 1, and a boss cylinder 3 is connected to the side of the large core 6 close to the lower die 2. A snap-in core 4 matching the boss cylinder 3 is arranged in the lower die 2; a plurality of shunt ports 5 are equidistantly arranged along the axis on the upper die 1, and the shunt ports 5 are located on the circumferential side of the boss cylinder 3.
[0023] It should be noted that: The upper die 1, as a part of the core structure, is used to cooperate with the lower die 2 to form an extrusion molding space for the motor housing. The large core 6 is located in the upper die and is used to form the main part of the motor housing. The boss cylinder 3 is connected to the side of the large core 6 close to the lower die 2 and is used to cooperate with the snap-in core 4. The shunt ports 5 are a plurality of ports equidistantly arranged along the axis on the upper die 1 and are located on the circumferential side of the boss cylinder 3, and are used to evenly introduce the extrusion material into the core structure to ensure the uniform molding of the motor housing.
[0024] In an embodiment of the present utility model, one end of the boss cylinder 3 close to the lower die 2 extends to the outside of the upper die 1, and a U-shaped groove 31 is opened on the outer side of the boss cylinder 3. The U-shaped groove 31 is located at one end of the boss cylinder 3 close to the lower die 2. Two convex ears 41 are arranged on the side of the snap-in core 4 close to the upper die 1, and the two convex ears 41 are arranged oppositely. A chute for the convex ears 41 to pass through is penetrated on the boss cylinder 3, and the chute is communicated with the U-shaped groove 31.
[0025] It should be noted that: One end of the boss cylinder 3 close to the lower die 2 extends to the outside of the upper die 1, and a part of the structure of the boss cylinder 3 protrudes outside the upper die 1. It can ensure that the boss cylinder 3 can fully cooperate with the snap-in core 4 during the extrusion molding process. A U-shaped groove 31 is opened on the outer side of the boss cylinder 3, which is located at one end of the boss cylinder 3 close to the lower die 2. The design of the U-shaped groove 31 can increase the contact area between the boss cylinder 3 and the snap-in core 4 and improve the cooperation accuracy. A chute for the convex ears 41 to pass through is penetrated on the boss cylinder 3, and the chute is communicated with the U-shaped groove 31. The design of the chute is used to accommodate and guide the convex ears 41 on the snap-in core 4 to ensure that the snap-in core 4 can smoothly cooperate with the boss cylinder 3.
[0026] In an embodiment of the present utility model, a stop block 7 is connected to the side of the large core 6 close to the boss cylinder 3 by screws.
[0027] It should be noted that: The connection mode between the large die core 6 and the stop block 7 is screw connection. A connection hole is designed on one side of the large die core 6 close to the boss cylinder 3 for screw connection with the stop block 7. The stop block 7 is used to prevent the snap-in die core 4 from being taken out of the upper die during the extrusion process. The screw connection between the large die core 6 and the stop block 7 realizes the fixation and constraint of the snap-in die core 4, improves the stability and reliability of the die core structure, and further improves the forming quality and production efficiency of the motor housing.
[0028] In the embodiment of the present invention, a small die core 8 is connected to the outside of the large die core 6 inside the upper die 1, and the inner side of one end of the small die core 8 close to the boss cylinder 3 is in contact with the outer side of the snap-in die core 4.
[0029] It should be noted that: The small die core 8 is connected inside the upper die 1, located outside the large die core 6, and the inner side of one end of the small die core 8 close to the boss cylinder 3 is in contact with the outer side of the snap-in die core 4. The contact design can ensure that a tight fit is formed between the small die core 8 and the snap-in die core 4 during the extrusion forming process, thereby improving the forming accuracy and quality of the motor housing.
[0030] The working principle of the die core structure of the snap-in water-cooled motor housing extrusion die provided by the present invention is as follows: The snap-in die core is placed into the upper die 1 through the lug 41 of the snap-in die core 4 and the U-shaped groove 31, and rotated by a certain angle so that the snap-in die core 4 completely enters the U-shaped groove 31 of the upper die 1. In this way, the snap-in die core 4 can be firmly hooked in the U-shaped groove 31 of the upper die 1 to form a complete upper die. Finally, the stop block 7 is installed in the U-shaped groove 31 of the upper die to prevent the snap-in die core 4 from being taken out of the upper die 1 during the extrusion process.
[0031] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.
Claims
1. A core structure of a buckle-in water-cooled motor housing extrusion die, characterized in that: include: Upper mold(1); A lower mold (2) is connected to one side of the upper mold (1); Wherein, a large mold core (6) is arranged in the upper mold (1), and a boss cylinder (3) is connected to the side of the large mold core (6) close to the lower mold (2), and a snap-in mold core (4) matching the boss cylinder (3) is arranged in the lower mold (2); The upper mold (1) is provided with a plurality of diversion openings (5) equidistantly along the axis, and the diversion openings (5) are located on the circumferential side of the boss cylinder (3).
2. The core structure of the buckle-in water-cooled motor housing extrusion die according to claim 1 is characterized in that: One end of the boss cylinder (3) close to the lower mold (2) extends to the outside of the upper mold (1), and a U-shaped groove (31) is provided on the outside of the boss cylinder (3).
3. The core structure of the buckle-in water-cooled motor housing extrusion die according to claim 2 is characterized in that: The U-shaped groove (31) is located on one end of the boss cylinder (3) close to the lower die (2).
4. The core structure of the buckle-in water-cooled motor housing extrusion die according to claim 3 is characterized in that: The snap-in mold core (4) is provided with two lugs (41) on one side close to the upper mold (1), and the two lugs (41) are arranged opposite to each other.
5. The core structure of the buckle-in water-cooled motor housing extrusion die according to claim 4 is characterized in that: The boss cylinder (3) is provided with a sliding groove through which the lug (41) passes, and the sliding groove is connected to the U-shaped groove (31).
6. The core structure of the buckle-in type water-cooled motor housing extrusion die according to claim 5, characterized in that: A stopper (7) is connected to one side of the large mold core (6) close to the boss cylinder (3) via screws.
7. The core structure of the buckle-in water-cooled motor housing extrusion die according to claim 6, characterized in that: A small mold core (8) is connected to the outer side of the large mold core (6) in the upper mold (1), and the inner side of the small mold core (8) close to one end of the boss cylinder (3) fits with the outer side of the snap-in mold core (4).