Double-stator motor iron core progressive die laminating and riveting locking device

Abstract

The utility model relates to a double-stator motor iron core progressive die laminating and riveting locking device, and belongs to the technical field of dies, the double-stator motor iron core progressive die laminating and riveting locking device comprises a blanking female die, a female die fixing plate and a lower die holder used for supporting the female die fixing plate, a locking device is arranged in the lower die holder, and the locking device comprises a locking seat and a locking strip. The locking strips are distributed on the periphery of the motor iron core product, the section of each locking strip is in a dovetail shape, the locking strips are in interference fit with the locking seat, and a precise filler gauge is arranged between each locking strip and the locking seat and used for adjusting the interference value between the locking strip and the side face of the motor iron core product. According to the die, in the stamping process, the locking force can be rapidly adjusted when motor iron core products with different raw materials and different shapes of laminated riveting points are switched, the die maintaining and adjusting efficiency is improved, the consistency of the formed products can be guaranteed, and the product quality and the production efficiency are further improved.

Description

Technical Field

[0001] This application relates to the field of mold technology, and in particular to a stacking and locking device for a progressive die for a dual-stator motor core. Background Technology

[0002] Currently, in the production of motor cores, an automatic riveting process is typically used to assemble multiple laminations into a single unit. This process primarily involves physically riveting by punching protrusions on each lamination and applying a locking force to the sides. However, when faced with variations in raw materials and riveting point shapes, it is difficult to precisely control the locking force. This results in the product's stacking ratio and pull-out force failing to meet production requirements, leading to poor adaptability and difficulty in meeting diverse production needs. Utility Model Content

[0003] To address the aforementioned issues, this application provides a progressive die stacking and locking device for a dual-stator motor core.

[0004] The technical solution of the progressive die stacking and locking device for a dual-stator motor core provided in this application is as follows:

[0005] A progressive die stacking and locking device for a dual-stator motor core includes a blanking die, a die fixing plate, and a lower die base for supporting the die fixing plate. The lower die base is characterized by a locking device comprising a locking seat and a locking bar. The locking bar is distributed around the perimeter of the motor core product, and its cross-section is dovetail-shaped. The locking bar and the locking seat are interference-fitted. A precision feeler gauge is provided between the locking bar and the locking seat, and the precision feeler gauge is used to adjust the interference value between the locking bar and the side of the motor core product.

[0006] By adopting the above technical solution, according to the riveting requirements of motor cores with different materials and riveting point shapes, a precision feeler gauge is used to adjust the tightness of the fit between the locking strip and the locking seat, thereby realizing the adjustment of different locking forces on the side of the motor core product during the stamping process, making the application more flexible; and when the locking force of the locking device on the motor core product changes during the use of the mold, it can also be quickly adjusted, improving the efficiency of mold maintenance.

[0007] Preferably, the interference fit between the locking bar and the locking seat is ±0.001mm.

[0008] By adopting the above technical solution, a precision feeler gauge can be set between the locking bar and the locking seat to adjust the locking bar to different degrees of locking the motor core, so as to adapt to the locking of different types of motor cores.

[0009] Preferably, the locking device further includes a locking seat pad, the lower mold base has a groove, the bottom of the groove has a material discharge through hole, the locking seat and the locking seat pad are arranged in the groove in sequence, and the two are detachably connected.

[0010] By adopting the above technical solution, the locking seat and the locking seat pad are supported by the lower mold base, ensuring the stability and reliability of the locking device. The locking seat and the locking seat pad are detachably connected, which makes it easy to replace locking seat pads of different thicknesses to adapt to the production of different types of motor cores and enhance the versatility of the mold.

[0011] Preferably, the blanking die is pressed into the die fixing plate, and the two are interference-fitted, with an interference range of 0.002 to 0.005 mm.

[0012] By adopting the above technical solution, the blanking die is tightly fitted into the die fixing plate to form a tight connection, which effectively resists the high impact and shear force during the stamping process, avoids relative displacement or loosening between the die and the fixing plate, and thus improves the rigidity and stability of the overall structure.

[0013] Preferably, the blanking die is fixed to the locking seat by a positioning pin.

[0014] By adopting the above technical solution, the accuracy of the relative position between the locking seat and the blanking die can be improved, thereby increasing the stamping precision of motor core products.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. The "dovetail" fit between the locking bar and the locking seat improves the fitting accuracy between them;

[0017] 2. By adjusting the tightness of the locking strip and the locking seat using a precision feeler gauge, the locking force can be adjusted according to the different product models, materials, and riveting shapes required. Furthermore, when the locking force changes during production, it can be quickly adjusted, improving the efficiency of mold maintenance. Attached Figure Description

[0018] Figure 1 This is a top view used in the embodiments of this application to illustrate the overall structure of the locking device.

[0019] Figure 2 This is a cross-sectional view used in the embodiments of this application to illustrate the overall structure of the locking device.

[0020] Figure 3 This is a schematic diagram illustrating the locking seat structure in the embodiments of this application.

[0021] Figure 4This is a schematic diagram illustrating the blanking die structure in the embodiments of this application.

[0022] Figure 5 This is a schematic diagram illustrating the structure of the locking seat pad in the embodiments of this application.

[0023] Explanation of reference numerals in the attached drawings: 1. Blanking die; 2. Locking seat; 3. Locking strip; 4. Pad block; 5. Lower die base; 6. Die fixing plate; 7. Precision feeler gauge; 8. Blanking through hole. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0025] This application discloses a progressive die stacking and locking device for a dual-stator motor core, referring to... Figure 1-5 The device includes a blanking die 1, a die fixing plate 6, and a lower die base 5 for supporting the die fixing plate 6. The lower die base 5 is equipped with a locking device, which includes a locking seat 2, a locking strip 3, and a pad 4. The locking strip 3 is distributed around the perimeter of the motor core product. The locking strip 3 has a dovetail-shaped cross-section and is interference-fitted with the locking seat 2. The interference value between the locking strip 3 and the locking seat 2 is ±0.001mm. A precision feeler gauge 7 is provided between the locking strip 3 and the locking seat 2, and the thickness of the precision feeler gauge 7 is preferably 0.005mm. The precision feeler gauge 7 can be used to adjust the interference value between the locking strip 3 and the side of the motor core product. By adding the precision feeler gauge 7 between the locking strip 3 and the locking seat 2 to adjust the interference value between the locking strip 3 and the side of the motor core product, the locking force can be adjusted during the stamping process of motor core products made of different raw materials and with different riveting point shapes.

[0026] Reference Figure 1 and 2 The lower mold base 5 has a groove, and the bottom of the groove has a material discharge through hole 8. A pad 4 is also provided in the groove. The locking seat 2 and the pad 4 are arranged in the groove in sequence and are connected by bolts. This allows for easy replacement of pads 4 of different thicknesses, thereby adapting to the production needs of different types of motor cores and further enhancing the versatility of the mold.

[0027] Reference Figure 1 and 2 The blanking die 1 and the die fixing plate 6 are interference fit. The blanking die 1 is gently tapped into the die fixing plate 6 by tapping rod. The interference range between the blanking die 1 and the die fixing plate 6 is 0.002 to 0.005 mm, which can facilitate the assembly of the blanking die 1 and also play a role in tight fixing.

[0028] Reference Figure 1 and 2The locking seat 2 and the blanking die 1 are connected and positioned using precision-grade locating pins, making the relative position between the locking seat 2 and the blanking die 1 more accurate. The blanking die 1 is fixed to the locking seat 2 and the locking pad by bolts. The locking device, the blanking die 1, and the die fixing plate 6 are all supported by the lower die base 5, further ensuring the stability and reliability of the locking device.

[0029] The implementation principle of the progressive die stacking and locking device for a dual-stator motor core according to an embodiment of this application is as follows:

[0030] Use a tapping rod to knock out the pad 4 and the locking seat 2, remove the bolts between the blanking die 1 and the locking seat 2, and by placing a precision feeler gauge 7 between the locking strip 3 and the locking seat 2, the interference fit between the locking strip 3 and the side of the motor core product changes, thereby adjusting the locking force.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stacking and locking device for a progressive die for a dual-stator motor core, comprising a blanking die (1), a die fixing plate (6), and a lower die base (5) for supporting the die fixing plate (6), characterized in that: The lower mold base (5) is provided with a locking device, which includes a locking seat (2) and a locking bar (3). The locking bar (3) is distributed around the motor core product. The locking bar (3) has a dovetail-shaped cross section. The locking bar (3) and the locking seat (2) are interference fit. A precision feeler gauge (7) is provided between the locking bar (3) and the locking seat (2). The precision feeler gauge (7) is used to adjust the interference value between the locking bar (3) and the side of the motor core product.

2. The progressive die stacking and riveting locking device for a dual-stator motor core according to claim 1, characterized in that: The interference range between the locking bar (3) and the locking seat (2) is ±0.001mm.

3. The progressive die stacking and locking device for a dual-stator motor core according to claim 1, characterized in that: The locking device also includes a pad (4), and the lower mold base (5) has a groove, the bottom of which has a material discharge through hole (8). The locking seat (2) and the pad (4) are arranged in the groove in sequence, and the two are detachably connected.

4. The progressive die stacking and riveting locking device for a dual-stator motor core according to claim 1, characterized in that: The blanking die (1) is pressed into the die fixing plate (6), and the two are interference fit, with an interference range of 0.002 to 0.005 mm.

5. The progressive die stacking and riveting locking device for a dual-stator motor core according to claim 1, characterized in that: The blanking die (1) is fixed to the locking seat (2) by a positioning pin.

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