Motor iron core manufacturing equipment

Abstract

The utility model discloses motor iron core manufacturing equipment. The motor iron core manufacturing equipment comprises a feeding device, a punching device, a rotating device and a curing device. The feeding device is used for conveying raw material sheets to the sheet punching device. The sheet punching device comprises an upper die and a lower die which are matched with each other, and the upper die and the lower die are matched to punch an iron core punching sheet from the raw material sheet. The rotating device bears the punched iron core punching sheet and drives the iron core punching sheet to rotate by a first preset angle after each time of punching. Each iron core punching sheet is in a sector ring shape, and a plurality of sector ring-shaped iron core punching sheets are assembled into a complete circular punching sheet in the same plane. The rotating device is further arranged to drive the circular punching sheet to rotate by a second preset angle after a complete circular punching sheet is assembled, so that the vertically stacked sector-shaped iron core punching sheets are arranged in a staggered manner. And the curing device is used for bonding and curing the iron core punching sheets which are stacked up and down. According to the motor iron core manufacturing equipment, the same plate difference can be eliminated, and the material utilization rate and the production efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and in particular to a motor core manufacturing equipment. Background Technology

[0002] With the intensifying competition in the new energy vehicle market, the requirements for automotive drive motors are becoming increasingly stringent. Demands for high efficiency, high power, and high speed are driving the use of thinner and stronger silicon steel sheets in motor manufacturing. To achieve optimal performance, the industry has increased the thickness of silicon steel sheets used in stators and rotors from the original 0.5mm for stamping to 0.35mm. Currently, some manufacturers have achieved stator lamination thicknesses of 0.2mm and rotor laminations of 0.35mm. Generally, thinner stator and rotor core laminations result in less core loss, improving motor efficiency, enhancing heat dissipation, and extending service life, thus enhancing overall motor performance. Because the rotor core carries and transmits current during operation, it typically requires greater strength and density. Therefore, some motors use rotor laminations that are thicker than stator laminations. For these rotors with different thicknesses, stamping is not feasible. To obtain a complete stator and rotor product, separate molds and materials are needed for each, increasing mold costs. Furthermore, the method of stamping stator laminations in their entirety results in significant material waste, especially the waste of the inner circular laminations, which greatly reduces the utilization rate of raw materials such as silicon steel sheets and increases material costs. To address this, the industry has also adopted a fan-shaped lamination method, which involves stamping multiple fan-shaped pieces and then assembling them into a complete ring. However, due to unavoidable variations in the raw materials, these variations are difficult to detect during the subsequent stacking process to form the core. While individual lamination differences are small, when multiple laminations are stacked, they often cause tilting or unevenness in the final core, affecting motor performance and resulting in a poor yield rate.

[0003] Therefore, it is necessary to propose a technical solution to overcome the shortcomings of existing technologies. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model proposes a motor core manufacturing equipment that can eliminate the difference between the same board and improve the material utilization rate and production efficiency.

[0005] This utility model is achieved through the following technical solution: a motor core manufacturing equipment, comprising a feeding device, a stamping device, a rotating device, and a curing device. The feeding device is used to transport raw material sheets to the stamping device. The stamping device includes an upper die and a lower die that cooperate with each other. The upper die and the lower die cooperate to stamp core blanks from the raw material sheets. The rotating device carries the stamped core blanks and drives the core blanks to rotate by a first preset angle after each stamping. Each core blank is a fan-shaped ring. On the rotating device, multiple fan-shaped ring core blanks are assembled into a complete circular ring blank in the same plane. The rotating device is further configured to drive the circular ring blank to rotate by a second preset angle after assembling a complete circular ring blank. The second preset angle is smaller than the first preset angle, so that the stacked fan-shaped ring core blanks are staggered. The curing device bonds and cures the stacked core blanks.

[0006] Furthermore, the slewing device includes an upper slewing component and a lower slewing component, which are segmented in the vertical direction and rotate synchronously.

[0007] Furthermore, the slewing device includes a drive motor and an upper synchronous belt assembly and a lower synchronous belt assembly driven by the drive motor. The upper synchronous belt assembly is connected to the upper slewing assembly to drive the upper slewing assembly to rotate, and the lower synchronous belt assembly is connected to the lower slewing assembly to drive the lower slewing assembly to rotate.

[0008] Furthermore, the curing device includes a heating mechanism.

[0009] Furthermore, the heating mechanism is disposed between the upper rotary assembly and the lower rotary assembly.

[0010] Furthermore, the heating mechanism includes a fixed cylindrical heating cylinder, and the upper rotating assembly, the heating cylinder, and the lower rotating assembly together form a receiving channel for accommodating the core laminations stacked sequentially.

[0011] Furthermore, the lower mold includes a lower mold base and a lower mold base plate, the upper rotary assembly is disposed within the lower mold base, and the heating mechanism and the lower rotary assembly are disposed within the lower mold base plate.

[0012] Furthermore, the upper rotary assembly is provided with a positioning mandrel, and a complete annular lamination includes multiple fan-shaped rings arranged around the positioning mandrel.

[0013] Furthermore, the first preset angle is 60°, and the second preset angle is 30°.

[0014] Furthermore, the motor core is a stator core.

[0015] The motor core manufacturing equipment provided by this utility model includes a rotary device and a curing device. The rotary device carries the stamped core laminations and drives the core laminations to rotate by a first preset angle after each stamping. On the rotary device, multiple fan-shaped core laminations are assembled into a complete circular core lamination in the same plane. The rotary device is also configured to drive the circular core lamination to rotate by a second preset angle after assembling a complete circular core lamination. The second preset angle is smaller than the first preset angle, so that the stacked fan-shaped core laminations are staggered. The curing device bonds and cures the stacked core laminations. This application uses fan-shaped core laminations to be assembled into a complete circular core lamination through a rotary device, and the rotary device makes the splicing seams of the stacked laminations staggered, which improves material utilization, eliminates the difference between the same plate, and completes self-bonding curing in the mold, thereby improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a top view of the motor core manufacturing equipment of this utility model.

[0017] Figure 2 This is a side view of the motor core manufacturing equipment of this utility model.

[0018] Figure 3 This is a schematic diagram of the laminations produced by the motor core manufacturing equipment of this utility model.

[0019] The reference numerals in the attached drawings are as follows: 20, lower die; 21, lower die fixing plate; 22, lower die base; 23, die base pad; 24, lower die base plate; 25, positioning mandrel; 3, rotary device; 31, drive motor; 311, mounting bracket; 312, synchronous belt mechanism; 3121, upper synchronous belt assembly; 3122, lower synchronous belt assembly; 313, tensioning wheel; 32, upper rotary assembly; 33, lower rotary assembly; 4, heating mechanism; 5, motor core; 51, core lamination. Detailed Implementation

[0020] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 3As shown, this application provides a motor core manufacturing equipment, which includes a feeding device (not shown), a lamination device, a rotary device 3, and a curing device. The feeding device is used to transport raw material sheets to the lamination device. The lamination device includes a cooperating upper die and a lower die 20, which cooperate to stamp core laminations 51 from the raw material sheets. The rotary device 3 carries the stamped core laminations 51 and rotates the core laminations 51 by a first preset angle after each stamping. Each core lamination 51 is a fan-shaped ring, and multiple fan-shaped core laminations 51 are assembled into a complete circular ring lamination on the rotary device 3 in the same plane. The rotary device 3 is further configured to rotate the circular ring lamination by a second preset angle after assembling a complete circular ring lamination, the second preset angle being smaller than the first preset angle, so that the stacked fan-shaped core laminations 51 are staggered. The curing device bonds and cures the stacked core laminations 51.

[0023] This application uses fan-shaped ring-shaped stampings, which are spliced ​​into complete circular ring-shaped stampings by a rotating device 3. The rotating device 3 also makes the splicing seams of the stacked stampings staggered, which improves material utilization, eliminates the difference between the same plate, and completes self-adhesion and curing in the mold, thereby improving production efficiency.

[0024] In this embodiment, the feeding device is used to unroll and flatten the rolled sheet and convey it to the stamping device. The feeding direction is generally perpendicular to the stamping direction. The specific structure of the feeding device is well-known in the art. To clearly illustrate the improvements of this application, the structure of the conventional feeding device is not illustrated in the accompanying drawings, and this application does not impose any limitations on it. Please refer to... Figure 1 and Figure 2 As shown, the stamping device includes an upper die and a lower die 20 that cooperate with each other. The upper die and the lower die 20 cooperate to stamp out a core lamination 51 from the raw material sheet. In this embodiment, the upper die is a punch, and the lower die 20 is a die. The punch and the die cooperate to form a mold cavity for stamping out the core lamination 51. In this embodiment, the lower die 20 includes a lower die fixing plate 21, a lower die base 22, a lower die base plate 24, a die base pad 23, and a positioning mandrel 25. The lower die fixing plate 21, the lower die base 22, the lower die base plate 24, and the die base pad 23 are arranged sequentially from top to bottom, and the positioning mandrel 25 is disposed within the lower die fixing plate 21 and the lower die base 22. A complete annular lamination includes multiple fan-shaped rings arranged around the positioning mandrel 25. The upper die only needs to be able to cooperate with the lower die 20 to stamp out the core lamination 51. Its specific structure is technology known in the art, and this application does not limit it.

[0025] Please continue reading. Figure 1 and Figure 2As shown, the rotary device 3 is disposed in the lower mold 20. The rotary device 3 includes an upper rotary assembly 32 and a lower rotary assembly 33. The upper rotary assembly 32 and the lower rotary assembly 33 are segmented in the vertical direction, and the upper rotary assembly 32 and the lower rotary assembly 33 rotate synchronously. Although the upper rotary assembly 32 and the lower rotary assembly 33 are segmented in the vertical direction, because they rotate synchronously, the stack of core laminations 51 stacked and housed between the upper rotary assembly 32 and the lower rotary assembly 33 remain relatively fixed, and relative rotation will not cause misalignment between the stacked core laminations 51.

[0026] In this embodiment, the rotary device 3 further includes a drive motor 31 and a synchronous belt mechanism 312. The upper rotary assembly 32 and the lower rotary assembly 33 achieve synchronous rotational movement through the drive motor 31 and the synchronous belt mechanism 312. Specifically, the drive motor 31 is a servo motor, which is fixed on the mounting bracket 311. The synchronous belt mechanism 312 includes an upper synchronous belt assembly 3121 and a lower synchronous belt assembly 3122. Both the synchronous belt assembly 3121 and the lower synchronous belt assembly 3122 are also equipped with tensioning pulleys 313 to tension the synchronous belt. The rotary device 3 includes a drive motor 31 and an upper synchronous belt assembly 3121 and a lower synchronous belt assembly 3122 driven by the drive motor 31. The upper synchronous belt assembly 3121 is connected to the upper rotary assembly 32 to drive the upper rotary assembly 32 to rotate, and the lower synchronous belt assembly 3122 is connected to the lower rotary assembly 33 to drive the lower rotary assembly 33 to rotate.

[0027] In this embodiment, the curing device includes a heating mechanism 4. In this embodiment, adhesive is applied to the core laminations 51. After each fan-shaped core lamination 51 is stamped, it is adhered to the core laminations 51 below it using adhesive. In this embodiment, the heating mechanism 4 is located between the upper rotating assembly 32 and the lower rotating assembly 33. The heating mechanism 4 includes a fixed cylindrical heating cylinder. The upper rotating assembly 32, the heating cylinder, and the lower rotating assembly 33 together form a receiving channel for accommodating the core laminations 51 stacked sequentially. The heating mechanism 4 is used to heat and cure the adhesive to improve the curing rate and bonding effect. The heating mechanism 4 requires power via a cable to generate heat. Its fixed configuration facilitates cable connection and avoids the structural complexity caused by using movable electrical connection devices. Stacked core laminations 51 are housed within a receiving channel formed by the upper rotating assembly 32, the heating cylinder, and the lower rotating assembly 33. The upper portion of the core laminations 51 within the upper rotating assembly 32 is driven to rotate by the upper rotating assembly 32, while the lower portion within the upper rotating assembly 32 is driven to rotate by the lower rotating assembly 33. The middle portion within the heating cylinder also rotates synchronously with the upper and lower portions due to adhesive force and friction between adjacent core laminations 51. In this embodiment, the upper rotating assembly 32 is disposed within the lower die base 22, and the heating mechanism 4 and the lower rotating assembly 33 are disposed within the lower die base plate 24. This facilitates independent installation of each component, simplifying assembly and maintenance.

[0028] In one embodiment, the first preset angle is 60° and the second preset angle is 30°. That is, during the stamping process, after each fan-shaped annular core lamination 51 is stamped, the rotary device 3 is controlled to rotate 60°, and this stamping is repeated 6 times to stamp and assemble a complete annular lamination. After one annular lamination is completed, the rotary device 3 is controlled to rotate 30°, and the next fan-shaped annular core lamination 51 stamped at this time is stacked above the seam of the previous annular lamination, thus ensuring high stacking strength and preventing the stacked core laminations 51 from easily falling apart. Then, after each fan-shaped annular core lamination 51 is stamped, the rotary device 3 is controlled to rotate 60°, and this stamping is repeated 6 times to complete the stamping of the second complete annular lamination. This process can be repeated. In other embodiments, the first preset angle and the second preset angle can also be other angle ranges.

[0029] Please see Figure 3As shown, multiple fan-shaped core laminations 51 are spliced ​​together in the same plane to form a circular lamination. These circular laminations are then stacked, bonded, and cured in the vertical direction to form the motor core 5. The fan-shaped lamination is the portion of the circular core formed by fan-shaped cutting. In this embodiment, the motor core 5 manufactured by the electronic core manufacturing equipment is a stator core.

[0030] As can be seen from the above description of the specific embodiments, the motor core manufacturing equipment provided by this utility model includes a rotary device 3 and a curing device. The rotary device 3 carries the stamped core laminations 51 and drives the core laminations 51 to rotate by a first preset angle after each stamping. On the rotary device 3, multiple fan-shaped core laminations 51 are assembled into a complete circular lamination in the same plane. The rotary device 3 is also configured to drive the circular lamination to rotate by a second preset angle after assembling a complete circular lamination. The second preset angle is smaller than the first preset angle, so that the stacked fan-shaped core laminations 51 are staggered. The curing device bonds and cures the stacked core laminations 51. This application uses fan-shaped core laminations to be assembled into a complete circular lamination by the rotary device 3, and the rotary device 3 makes the splicing seams of the stacked laminations staggered, which improves material utilization, eliminates the difference between the same plate, and completes self-bonding curing in the mold, thereby improving production efficiency.

[0031] This utility model has been described through several specific embodiments. Those skilled in the art should understand that various modifications and equivalent substitutions can be made to this utility model without departing from its scope. Furthermore, various modifications can be made to this utility model for specific situations or circumstances without departing from its scope. Therefore, this utility model is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this utility model.

Claims

1. A motor core manufacturing equipment, characterized in that, The device includes a feeding device, a stamping device, a rotating device (3), and a curing device. The feeding device is used to transport the raw material sheet to the stamping device. The stamping device includes an upper die and a lower die (20) that cooperate with each other. The upper die and the lower die (20) cooperate to stamp out iron core blanks (51) from the raw material sheet. The rotating device (3) carries the stamped iron core blanks (51) and drives the iron core blanks (51) to rotate by a first preset angle after each stamping. Each iron core blank (51) 1) For fan ring, on the rotary device (3), multiple fan ring core laminations (51) are assembled into a complete circular ring lamination in the same plane. The rotary device (3) is also configured to drive the circular ring lamination to rotate by a second preset angle after assembling a complete circular ring lamination. The second preset angle is smaller than the first preset angle, so that the stacked fan ring core laminations (51) are staggered. The curing device bonds and cures the stacked core laminations (51).

2. The motor core manufacturing equipment as described in claim 1, characterized in that, The rotary device (3) includes an upper rotary assembly (32) and a lower rotary assembly (33). The upper rotary assembly (32) and the lower rotary assembly (33) are segmented in the vertical direction and rotate synchronously.

3. The motor core manufacturing equipment as described in claim 2, characterized in that, The slewing device (3) includes a drive motor (31) and an upper synchronous belt assembly (3121) and a lower synchronous belt assembly (3122) driven by the drive motor (31). The upper synchronous belt assembly (3121) is connected to the upper slewing assembly (32) to drive the upper slewing assembly (32) to rotate, and the lower synchronous belt assembly (3122) is connected to the lower slewing assembly (33) to drive the lower slewing assembly (33) to rotate.

4. The motor core manufacturing equipment as described in claim 2 or 3, characterized in that, The curing device includes a heating mechanism (4).

5. The motor core manufacturing equipment as described in claim 4, characterized in that, The heating mechanism (4) is disposed between the upper rotary assembly (32) and the lower rotary assembly (33).

6. The motor core manufacturing equipment as described in claim 5, characterized in that, The heating mechanism (4) includes a fixed cylindrical heating cylinder. The upper rotating assembly (32), the heating cylinder and the lower rotating assembly (33) together form a receiving channel for accommodating the iron core laminations (51) stacked sequentially.

7. The motor core manufacturing equipment as described in claim 6, characterized in that, The lower mold (20) includes a lower mold base (22) and a lower mold base plate (24). The upper rotary assembly (32) is disposed in the lower mold base (22), and the heating mechanism (4) and the lower rotary assembly (33) are disposed in the lower mold base plate (24).

8. The motor core manufacturing equipment as described in claim 2 or 3, characterized in that, The upper rotary assembly (32) is provided with a positioning mandrel (25), and a complete annular stamping includes multiple fan-shaped rings arranged around the positioning mandrel (25).

9. The motor core manufacturing equipment as described in claim 1, characterized in that, The first preset angle is 60°, and the second preset angle is 30°.

10. The motor core manufacturing equipment as described in claim 1, characterized in that, The motor core is a stator core.

Images