Skewed slot rotor iron core stacking device
By staggering the slats and the mandrel rods of the inclined chute rotor core stacking device, the problem of two punching and strict order in the prior art is solved, and the production efficiency and accuracy are improved.
Patent Information
- Application Number
- CN202422372568.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-28
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-28
AI Technical Summary
In the prior art, the punching plate of the chute rotor core requires two punching and a strict placement order, resulting in low production efficiency and prone to errors.
A stacking device for the inclined chute rotor core is adopted, and the inclined chute is formed by rotating the slats and the mandrel rod, thereby eliminating the punching process of the punching plate positioning holes, and fixing the punching sequence with a clamp.
The positioning holes are not required to be punched, which simplifies the stacking process of punching, improves production efficiency and avoids errors in placement order.
Smart Images
Figure CN223246440U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a stacking device for skew slot rotor iron cores. Background Art
[0002] The motor rotor is designed with skewed slots, which can effectively weaken the harmonic electromotive force generated by the tooth harmonic magnetic field, thereby weakening the additional torque caused by these harmonic magnetic fields, improving starting performance, and reducing electromagnetic noise. In order to enable the rotor to stack skewed slots, the rotor core punching sheet 11 is punched out in two steps. First, the guide bar groove 12 is punched out, and then the positioning hole 13 is punched out (such as Figure 4 As shown in the figure, the angles of the positioning holes in a batch of punches are different. Then, a pin is inserted through the positioning holes and the punches are pressed together. This method requires the silicon steel sheet to be punched twice, which is a long process. In addition, the placement of the punches must be in sequence. If the placement order is disordered, it will be very difficult to correct it. Utility Model Content
[0003] In view of the above problems, the present invention proposes a stacking device for a skewed slot rotor core. The stacking device can avoid the problem of incorrect placement order of punching sheets, conveniently form skewed slots, and save the process of punching positioning holes on the punching sheets.
[0004] The technical solution of the present utility model is a stacking device for a skewed slot rotor core, which includes a base 9 and a core rod 7. The lower part of the core rod has a flange 6, the lower end of the core rod 7 is inserted in the base 9, and the flange is placed on the base. The outer diameter of the part above the flange of the core rod matches the axial hole 14 on the punching sheet, and the length of this part is slightly larger than the length of the punching sheet after stacking. It is characterized in that a shaft seat 3 is provided on one side of the base, a rotating shaft 2 is inserted in the shaft seat, the rotating shaft is perpendicular to the core rod, and one end of the rotating shaft is fixedly connected to a slat 5, the length of the slat is greater than the length of the punching sheet after stacking, and the slat can be inserted into the slot 15 of the punching sheet.
[0005] The method of use is to rotate the shaft so that the slats are parallel to the core rod, put the axis hole of the punch on the core rod, and put the guide groove of the punch on the slats. Rotate the shaft so that the slats and the core rod are staggered at a certain angle. In this way, the guide grooves of each punch will be staggered in sequence to form an oblique groove. Then use a clamp to clamp the stacked punches.
[0006] The beneficial effect of the utility model is that the punching sheets can be formed into oblique grooves by rotating the slats, so that there is no need to punch positioning holes on the punching sheets. During the stacking process of the punching sheets, there is no need to worry about the placement order of the punching sheets, which can facilitate the punching of the punching sheets and the stacking of the oblique grooves. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a structural diagram of the present utility model.
[0008] Figure 2 for Figure 1 Top view of .
[0009] Figure 3 for Figure 1 Left side view after the middle slat is rotated to a certain angle. In this figure, the runner is not drawn.
[0010] Figure 4 It is a schematic diagram of punching in the prior art.
[0011] Figure symbols: 1-wheel, 2-rotating shaft, 3-axle seat, 4-rib, 5-slat, 6-flange, 7-core, 8-iron core, 9-base, 10-bracket, 11-punch, 12-guide bar groove, 13-positioning hole, 14-axle hole, 15-slot. DETAILED DESCRIPTION
[0012] A stacking device for skew slot rotor cores, which includes a base 9 and a core rod 7. The lower part of the core rod has a flange 6. The lower end of the core rod 7 is inserted into the base 9, and the flange rests on the base. The outer diameter of the part above the flange of the core rod matches the axial hole 14 on the punching sheet 11, and the length of this part is slightly larger than the length of the punching sheet after stacking. The device is characterized in that a shaft seat 3 is provided on one side of the base, the shaft seat is connected to the bracket 10, and the bracket is fixed to the base by screws. A rotating shaft 2 is inserted into the shaft seat, the rotating shaft is perpendicular to the core rod and points to the midpoint of the length of the core rod. A slat 5 is fixedly connected to one end of the rotating shaft. The length of the slat is greater than the length of the punching sheet after stacking, and the slat can be inserted into the slot 15 of the punching sheet.
[0013] The method of use is to rotate the shaft so that the slats are parallel to the core rod, put the axial hole of the punch on the core rod, and put the guide groove of the punch on the slats. Rotate the shaft to stagger the slats and the core rod at a certain angle. In this way, the guide grooves of each punch will be staggered in sequence to form an oblique groove. Then use a clamp to clamp the stacked punches and finally remove the clamped punches from the stacking device.
[0014] The clamp can be a clip or a structure in which an external thread is provided at the top of the core rod, and a nut is screwed on the external thread to clamp the punching sheet to form an iron core 8, and then a guide strip is cast on the iron core 8. After the casting is completed, the core rod is removed.
[0015] In order to facilitate the rotation of the shaft, a rotating wheel 1 is provided at the other end of the shaft.
[0016] In order to improve the connection strength between the slats and the shaft, a supporting rib 4 is connected between the slats and the shaft. The length of the supporting rib is equal to that of the slats, and the thickness of the supporting rib is 4 times the thickness of the slats.
Claims
1. A stacking device for a skewed slot rotor core, comprising a base (9) and a core rod (7), wherein the lower portion of the core rod has a flange (6), the lower end of the core rod (7) is inserted into the base (9), and the flange rests on the base, the outer diameter of the portion above the flange of the core rod matches the axial hole (14) on the punching sheet, and the length of the portion is slightly larger than the length of the punching sheet after stacking, wherein the device is characterized in that: A shaft seat (3) is provided on one side of the base, a rotating shaft (2) is inserted into the shaft seat, the rotating shaft is perpendicular to the core rod, and a slat (5) is fixedly connected to one end of the rotating shaft. The length of the slat is greater than the length of the stacked punching sheets, and the slat can be inserted into the notch (15) of the punching sheet.
2. The stacking device of skewed slot rotor cores according to claim 1, wherein: An external thread is provided on the top of the core rod.
3. The stacking device of skewed slot rotor cores according to claim 1, wherein: A rotating wheel (1) is provided at the other end of the rotating shaft.
4. The stacking device of the skew slot rotor core according to claim 1, wherein a support rib (4) is connected between the slats and the rotating shaft, the length of the support rib is equal to that of the slats, and the thickness of the support rib is 4 times the thickness of the slats.