Rotor core lamination device

Abstract

The present invention discloses a rotor core lamination device, which relates to the technical field of rotor core lamination. The first plate is sleeved on the core shaft, and the second plate is detachably mounted on the bottom of the core shaft. The rotor core to be inserted with magnetic steel is placed between the first plate and the second plate. The first plate is provided with a concave hole, and the concave hole corresponds one-to-one to the magnetic steel slots on the rotor core. The second plate is first fixed to the core shaft, and a required number of rotor punchings and the first plate are sequentially sleeved on the core shaft. The first plate laminates the rotor punchings so that the rotor punchings are fixed between the first plate and the second plate. Magnetic steel glue is applied to the magnetic steel slots of the uppermost layer of the rotor punchings through the concave holes on the first plate, and the magnetic steel is inserted into the magnetic steel slots along the concave holes. When the rotor core is cured, the second plate is removed, and then the rotor core is taken out of the device, and then the first plate is taken out of the core shaft. The device is simple to manufacture and has low cost. It is suitable for prototype trial production and small-batch production of rotor cores containing magnetic steel glue.

Description

Technical Field

[0001] The present invention relates to the technical field of rotor core lamination, and in particular to a rotor core lamination device. Background Art

[0002] The rotor core is typically composed of several stacked rotor laminations, and the quality of their assembly plays a crucial role in the motor's overall performance. To reduce rotor core weight and initial rotor imbalance, the method for securing the magnets within the motor rotor core has evolved from potting to coating with specialized magnetic adhesive. This adhesive-coated rotor core requires a stamping machine to press the laminations to a specified height before applying the adhesive and inserting the magnets. This equipment requires high investment, making it unsuitable for small-batch or prototype production verification. Summary of the Invention

[0003] 1. Technical problem to be solved by the invention

[0004] In response to the technical problem that stamping equipment is not suitable for small-batch production of magnetic steel glue rotor cores, the present invention provides a rotor core stacking device, which places the rotor core between a first plate and a second plate. The device is simple to manufacture and low in cost, and is suitable for prototype trial production and small-batch production of magnetic steel glue rotor cores.

[0005] 2. Technical solution

[0006] To solve the above problems, the technical solution provided by the present invention is: a rotor core lamination device, comprising a core shaft, a first plate and a second plate, wherein the first plate is sleeved on the core shaft, and the second plate is detachably mounted on the bottom of the core shaft, and the rotor core to be inserted with magnetic steel is placed between the first plate and the second plate, and the first plate is provided with a concave hole, which corresponds one-to-one to the magnetic steel slots on the rotor core.

[0007] Optionally, a pressure plate is further included, which is provided with a first notch, and an end of the core shaft close to the first plate is provided with a second notch that cooperates with the first notch, one end face of the pressure plate is in contact with the first plate, and the other end face of the pressure plate is in contact with the core shaft.

[0008] Optionally, a screw is further included, the bottom of the core shaft is provided with a first screw hole that cooperates with the screw, and the second plate is provided with a second screw hole that cooperates with the screw.

[0009] Optionally, the end surface of the second plate in contact with the rotor core is coated with grease.

[0010] Optionally, the first plate is made of aluminum alloy.

[0011] Optionally, the outer side wall of the core shaft is provided with a groove, and the inner side wall of the first plate and the rotor core are both provided with a protrusion that cooperates with the groove.

[0012] Optionally, a limiting hole is provided on the end surface of the second plate that contacts the rotor core, and the limiting hole is interference fit with the bottom of the core shaft.

[0013] Optionally, the screw includes a nut and a screw rod vertically connected to the nut, the diameter of the second screw hole is larger than the diameter of the screw rod, and the diameter of the second screw hole is smaller than the diameter of the nut.

[0014] Optionally, a countersunk hole is provided on the end surface of the second plate away from the rotor core, the countersunk hole is connected to the second screw hole, the diameter of the countersunk hole is larger than the diameter of the nut, and the depth of the countersunk hole is greater than the thickness of the nut.

[0015] Optionally, the diameter of the second plate is smaller than or larger than the diameter of the rotor core.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] (1) The rotor core lamination device proposed in the embodiment of the present application is used by first fixing the second plate to the core shaft, and then sequentially sleeve the required number of rotor punchings and the first plate on the core shaft. The first plate is used to laminate the rotor punchings so that the rotor punchings are fixed between the first plate and the second plate. The magnetic steel glue is applied to the magnetic steel slots on the uppermost layer of the rotor punchings through the recessed holes on the first plate, and the magnetic steel is inserted into the magnetic steel slots along the recessed holes. When the rotor core is cured, the second plate is removed, and then the rotor core is taken out of the device, and then the first plate is taken out of the core shaft. The device is simple to manufacture and low in cost, and is suitable for prototype trial production and small-batch production of rotor cores containing magnetic steel glue.

[0019] (2) In the rotor core stacking device proposed in the embodiment of the present application, when the first plate is pressed onto the core, the pressure plate is arranged on the core shaft through the first slot and the second slot. The distance from the upper end surface of the second opening slot of the core shaft to the first plate is slightly smaller than the thickness of the pressure plate, so that the two end surfaces of the pressure plate respectively contact the first plate and the core shaft, thereby fixing the first plate, ensuring the rotor core stacking coefficient, and achieving a better core stacking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the rotor core lamination device proposed in an embodiment of the present invention;

[0021] Figure 2 An exploded view of a rotor core lamination device according to an embodiment of the present invention;

[0022] Figure 3 Schematic diagram of the first screw hole and the second screw hole of the rotor core lamination device proposed in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0024] The present application will be further described below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended solely to illustrate the relevant inventions and are not intended to limit the inventions. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the drawings. Terms such as "first" and "second" in the present application are provided for the convenience of describing the technical solutions of the present invention and do not have a specific limiting effect. They are general references and do not constitute a limitation on the technical solutions of the present invention. It should be noted that the embodiments and features therein in the present application may be combined with each other unless there is a conflict. In the description of the present invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a communication between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts, all of which are within the scope of protection required by the present invention.

[0025] Example 1

[0026] Combined with attachment Figure 1-3The rotor core lamination device of this embodiment includes a core shaft 3, a first plate 1 and a second plate 2. The first plate 1 is sleeved on the core shaft 3, and the second plate 2 is detachably mounted on the bottom of the core shaft 3. The rotor core 5 to be inserted with magnetic steel is placed between the first plate 1 and the second plate 2. The first plate 1 is provided with a concave hole 11, and the concave hole 11 corresponds one-to-one to the magnetic steel slot 51 on the rotor core 5. The rotor core 5 is formed by stacking rotor punchings. When in use, the second plate 2 is first fixed to the core shaft 3, and the required number of rotor punchings and the first plate 1 are sequentially sleeved on the core shaft 3. The first plate 1 stacks the rotor punchings so that the rotor punchings are fixed between the first plate 1 and the second plate 2. The magnetic steel glue is applied to the magnetic steel slot 51 of the uppermost layer of the rotor punching through the recessed hole 11 on the first plate 1, and the magnetic steel is inserted into the magnetic steel slot 51 along the recessed hole 11; when the rotor core 5 is cured, the second plate 2 is removed, and then the rotor core 5 is taken out of the device, and then the first plate 1 is taken out of the core shaft 3. The device is simple to manufacture and low in cost, and is suitable for prototype trial production and small-batch production of rotor cores 5 containing magnetic steel glue.

[0027] Example 2

[0028] Combined with attachment Figure 1-3 Compared with the technical solution of Example 1, the rotor core lamination device of this embodiment can be improved as follows: it also includes a pressure plate 4, the pressure plate 4 is provided with a first notch 41, and the end of the core shaft 3 close to the first plate 1 is provided with a second notch 31 that cooperates with the first notch 41. One end face of the pressure plate 4 contacts the first plate 1, and the other end face of the pressure plate 4 contacts the core shaft 3. When the first plate 1 is pressed onto the core, the pressure plate 4 is arranged on the core shaft 3 through the first notch 41 and the second notch 31. The distance between the upper end face of the second open slot of the core shaft 3 and the first plate 1 is slightly smaller than the thickness of the pressure plate 4, so that the two end faces of the pressure plate 4 contact the first plate 1 and the core shaft 3 respectively, playing the role of fixing the first plate 1, ensuring the lamination coefficient of the rotor core 5, and making the lamination effect of the core better.

[0029] Example 3

[0030] Combined with attachment Figure 1-3 The rotor core lamination device of this embodiment, compared to the technical solutions of Embodiments 1 or 2, can be improved as follows: it further includes a screw 6. The bottom of the core shaft 3 is provided with a first screw hole 32 that engages with the screw 6, and the second plate 2 is provided with a second screw hole 21 that engages with the screw 6. The screw 6 is sequentially inserted through the second screw hole 21 and the first screw hole 32, thereby detachably connecting the second plate 2 and the core shaft 3. After the rotor core 5 is cured, the screw 6 is unscrewed and the second plate 2 is removed, thereby facilitating the removal of the rotor core 5 from the core shaft 3. This operation is simple.

[0031] Example 4

[0032] Combined with attachment Figure 1-3The rotor core lamination device of this embodiment, compared to any of the technical solutions of Examples 1-3, can be improved as follows: the end surface of the second plate 2 that contacts the rotor core 5 is coated with grease. This grease prevents adhesion between the rotor core 5 and the second plate 2, facilitating separation after the rotor core 5 has solidified.

[0033] Example 5

[0034] Combined with attachment Figure 1-3 The rotor core lamination device of this embodiment, compared to any of the technical solutions of Embodiments 1-4, can be improved as follows: the first plate 1 is made of aluminum alloy. In this embodiment, the first plate 1 is made of aluminum alloy, which is non-magnetic and effectively avoids suction when the magnet is inserted. In other embodiments, the first plate 1 can be made of copper alloy or magnesium alloy, but aluminum alloy is relatively inexpensive and is the preferred material.

[0035] Example 6

[0036] Combined with attachment Figure 1-3 Compared to any of the technical solutions in Examples 1-5, the rotor core lamination device of this embodiment features the following improvements: a groove 33 is provided on the outer wall of the core shaft 3, and a protrusion 12 is provided on the inner wall of each of the first plate 1 and the rotor core 5, which engages with the groove 33. When the first plate 1 and the rotor core 5 are sleeved onto the core shaft 3, the engagement of the protrusion 12 and the groove 33 further secures the position of the first plate 1 and the rotor core 5 relative to the core shaft 3, thereby achieving a better lamination effect on the rotor core 5. Furthermore, a slight interference fit is adopted between the core shaft 3 and the rotor core 5, ensuring the concentricity of the rotor core 5 after lamination.

[0037] Example 7

[0038] Combined with attachment Figure 1-3 The rotor core lamination device of this embodiment, compared to any of the technical solutions of Examples 1-6, can be improved as follows: The end surface of the second plate 2 that contacts the rotor core 5 is provided with a stopper hole 22. The stopper hole 22 forms an interference fit with the bottom of the core shaft 3. The diameter of the stopper hole 22 is slightly smaller than the diameter of the bottom of the core shaft 3. This interference fit between the stopper hole 22 and the bottom of the core shaft 3 prevents relative shaking when the core shaft 3 and the second plate 2 are connected by screws 6, providing a more stable connection.

[0039] Example 8

[0040] Combined with attachment Figure 1-3The rotor core lamination device of this embodiment, compared to any of the technical solutions of Embodiments 1-7, can be improved as follows: the screw 6 includes a nut 61 and a screw rod 62 perpendicularly connected to the nut 61. The diameter of the second screw hole 21 is larger than the diameter of the screw rod 62, and the diameter of the second screw hole 21 is smaller than the diameter of the nut 61. The diameter of the second screw hole 21 is larger than the diameter of the screw rod 62 but smaller than the diameter of the nut 61, thereby confining the nut 61 outside the second screw hole 21 and connecting the second plate 2 and the core shaft 3.

[0041] Example 9

[0042] Combined with attachment Figure 1-3 The rotor core lamination device of this embodiment, compared to any of the technical solutions in Examples 1-8, can be improved as follows: a countersunk hole 23 is provided on the end surface of the second plate 2 facing away from the rotor core 5. The countersunk hole 23 communicates with the second screw hole 21. The diameter of the countersunk hole 23 is larger than the diameter of the nut 61, and the depth of the countersunk hole 23 is greater than the thickness of the nut 61. The countersunk hole 23 ensures that the nut 61 can be fully sunk into the hole. When the screw 6 is used to connect the core shaft 3 and the second plate 2, the end surface of the second plate 2 facing away from the rotor core 5 is flat, making it easier to place.

[0043] Example 10

[0044] Combined with attachment Figure 1-3 The rotor core lamination device of this embodiment, compared to any of the technical solutions of Embodiments 1-9, can be improved as follows: the diameter of the second plate 2 can be smaller or larger than the diameter of the rotor core 5. In this embodiment, the diameter of the second plate 2 is smaller than the diameter of the rotor core 5. The diameter of the second plate 2 is different from the diameter of the rotor core 5, making it easier to separate and remove the second plate 2 from the rotor core 5 after lamination of the rotor core 5. In other embodiments, the diameter of the second plate 2 can be larger than the diameter of the rotor core 5.

[0045] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A rotor core lamination device, characterized in that: The rotor core comprises a core shaft, a first plate, and a second plate. The first plate is sleeved on the core shaft, and the second plate is detachably mounted on the bottom of the core shaft. The rotor core to be inserted with magnetic steel is placed between the first plate and the second plate. The first plate is provided with concave holes, which correspond one-to-one to the magnetic steel slots on the rotor core. The pressure plate is provided with a first notch, and the end of the core shaft close to the first plate is provided with a second notch that matches the first notch, one end surface of the pressure plate contacts the first plate, and the other end surface of the pressure plate contacts the core shaft; It also includes a screw, the bottom of the core shaft is provided with a first screw hole that cooperates with the screw, and the second plate is provided with a second screw hole that cooperates with the screw; The first plate is made of a non-magnetic aluminum alloy to avoid suction when the magnet is inserted; the outer wall of the core shaft is provided with a groove, and the inner wall of the first plate and the rotor core are both provided with a protrusion that cooperates with the groove; the end surface of the second plate that contacts the rotor core is provided with a limiting hole, and the limiting hole is interference fit with the bottom of the core shaft; During use, first fix the second plate to the core shaft, and then sleeve the required number of rotor punchings and the first plate on the core shaft in sequence. When the first plate is pressed onto the iron core, the pressure plate is arranged on the core shaft through the first slot and the second slot. The distance from the upper end face of the second slot of the core shaft to the first plate is slightly smaller than the thickness of the pressure plate, so that the two end faces of the pressure plate respectively contact the first plate and the core shaft. The first plate overlaps the rotor punchings to fix the rotor punchings between the first plate and the second plate. Apply the magnetic steel glue to the magnetic steel slot of the uppermost layer of the rotor punchings through the concave hole on the first plate, and insert the magnetic steel into the magnetic steel slot along the concave hole. When the rotor core is cured, remove the second plate, then remove the rotor core from the device, and then remove the first plate from the core shaft.

2. The rotor core lamination device according to claim 1, characterized in that: The end surface of the second plate in contact with the rotor core is coated with grease.

3. The rotor core lamination device according to claim 1, characterized in that: The screw includes a nut and a screw rod vertically connected to the nut, the diameter of the second screw hole is larger than the diameter of the screw rod, and the diameter of the second screw hole is smaller than the diameter of the nut.

4. The rotor core lamination device according to claim 3, characterized in that: A countersunk hole is provided on the end surface of the second plate away from the rotor core. The countersunk hole is connected to the second screw hole. The diameter of the countersunk hole is larger than the diameter of the nut, and the depth of the countersunk hole is larger than the thickness of the nut.

5. The rotor core lamination device according to any one of claims 1 to 4, characterized in that: The diameter of the second plate is smaller than or larger than the diameter of the rotor core.

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