Stacking tool for motor stator core

Abstract

The utility model discloses a press -fitting frock for motor stator core, include: mandrel, including two core shaft parts of symmetrical interval arrangement, the core shaft part includes lower end plate, upper end plate, connect in a plurality of longitudinal muscle between upper end plate and lower end plate, and connect a plurality of longitudinal muscle and along vertical direction interval arrangement a plurality of reinforcing rib subassembly, the reinforcing rib subassembly includes the circumferential muscle of connecting adjacent two longitudinal muscle and is arranged in the connecting rib of two core shaft parts, the connecting rib of two core shaft parts is detachably connected through connecting component, bottom plate, with lower end plate detachable connection and the outer diameter is greater than the outer diameter of core shaft, top plate, with upper end plate detachable connection and the outer diameter is consistent with the outer diameter of core shaft. The utility model provides a press -fitting frock for motor stator core, and the stator core is pressed and disassembled conveniently, and the damage to stator core is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, and specifically relates to a stacking tool for motor stator cores. Background Technology

[0002] In motor manufacturing, the stator core is positioned using the keyway on the inner circle of the laminations during stacking. A guide key is made on the stacking mandrel to cooperate with this keyway, ensuring that the stator core slots are vertical and neat. However, with the development of the motor manufacturing industry, the diameter of stator laminations in large motors is larger, and the stator core is easily scratched during disassembly after stacking, which conventional stacking tools cannot handle. Utility Model Content

[0003] The purpose of this invention is to provide a stacking fixture for motor stator cores, which facilitates disassembly after stacking and is less likely to damage the stator cores.

[0004] Based on the above problems, the technical solution provided by this utility model is as follows:

[0005] Stacking fixtures for motor stator cores include:

[0006] A mandrel includes two mandrel portions arranged symmetrically at intervals. Each mandrel portion includes a lower end plate, an upper end plate, a plurality of longitudinal ribs connecting the upper end plate and the lower end plate, and a plurality of reinforcing rib assemblies connecting the plurality of longitudinal ribs and arranged at intervals in the vertical direction. Each reinforcing rib assembly includes a circumferential rib connecting two adjacent longitudinal ribs and a connecting rib arranged between the two mandrel portions. The connecting ribs of the two mandrel portions are detachably connected via a connecting assembly.

[0007] A base plate, which is detachably connected to the lower end plate and has an outer diameter larger than the outer diameter of the mandrel;

[0008] The top plate is detachably connected to the upper end plate and its outer diameter is the same as that of the mandrel.

[0009] In some embodiments, the connecting assembly includes a connecting plate abutting against two opposing connecting ribs and two first connecting members connecting the connecting plate to the two connecting ribs.

[0010] In some embodiments, the first connector includes a bolt and a nut that mates with the bolt.

[0011] In some embodiments, both the upper and lower end plates are fan-shaped plates.

[0012] In some embodiments, the base plate is connected to the lower end plate via a plurality of second connectors, and the top plate is connected to the upper end plate via a plurality of third connectors.

[0013] In some embodiments, the second and third connectors are screws.

[0014] In some embodiments, a plurality of first positioning elements are provided between the base plate and the lower end plate, and a plurality of second positioning elements are provided between the top plate and the upper end plate.

[0015] In some of these embodiments, the first positioning element and the second positioning element are pins.

[0016] In some embodiments, the top plate is provided with a lifting assembly, which includes a plurality of lifting screws disposed on the top plate.

[0017] In some embodiments, a guide key is also included, which extends from the lower end plate through one of the longitudinal ribs to the top plate.

[0018] Compared with the prior art, the advantages of this utility model are:

[0019] 1. The mandrel is designed in two halves. By combining the two mandrel halves that are symmetrically spaced apart, a complete mandrel that matches the inner diameter of the stator core can be obtained to meet the press-fit requirements. After the press-fit process is completed, the outer diameter of the mandrel can be reduced by disassembling the top plate and the upper connecting components, which facilitates the disassembly of the stator core and avoids damage to the stator core.

[0020] 2. The connecting assembly uses a connecting plate and bolts and nuts, which can stably connect the two mandrel parts and improve the stability of the mandrel structure. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is one of the structural schematic diagrams of an embodiment of the stacking tooling for motor stator cores according to this utility model;

[0023] Figure 2 This is a second structural schematic diagram of an embodiment of the present utility model;

[0024] Figure 3 This is the third structural schematic diagram of an embodiment of the present utility model;

[0025] Figure 4 This is the fourth structural schematic diagram of an embodiment of the present utility model;

[0026] Figure 5This is one of the structural schematic diagrams of the mandrel portion in an embodiment of this utility model;

[0027] Figure 6 This is the second schematic diagram of the mandrel portion in an embodiment of this utility model;

[0028] Figure 7 This is one of the schematic diagrams showing the usage state of this utility model embodiment;

[0029] Figure 8 This is the second schematic diagram of the usage state of this utility model embodiment;

[0030] Figure 9 This is the third schematic diagram of the usage state of this utility model embodiment;

[0031] in:

[0032] 1. Base plate;

[0033] 2. Mandrel section; 2-1. Lower end plate; 2-2. Upper end plate; 2-3. Longitudinal rib; 2-4. Circumferential rib; 2-5. Connecting rib;

[0034] 3. Top slab;

[0035] 4. Connecting components; 4-1. Connecting plate; 4-2. First connecting piece;

[0036] 5. Second connector;

[0037] 6. First positioning component;

[0038] 7. Third connector;

[0039] 8. Second positioning component;

[0040] 9. Lifting bolts;

[0041] 10. Guide keys;

[0042] 11. Stator laminations. Detailed Implementation

[0043] The above solution will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrating the present invention and are not intended to limit the scope of the present invention. The implementation conditions used in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0044] like Figures 1 to 4The diagram shown is a structural schematic of an embodiment of the present invention, which provides a stacking fixture for a motor stator core, including a base plate 1, a mandrel detachably mounted on the base plate 1 at its lower end, and a top plate 3 detachably mounted on the upper end of the mandrel. The outer diameter of the base plate 1 is larger than the outer diameter of the mandrel to facilitate the placement of the stator laminations 11, and the outer diameter of the top plate 3 is the same as the outer diameter of the mandrel.

[0045] The mandrel includes two mandrel portions 2 arranged symmetrically at intervals, such as Figure 5 and Figure 6 As shown, the mandrel portion 2 includes a lower end plate 2-1, an upper end plate 2-2, multiple longitudinal ribs 2-3 connecting the upper end plate 2-1 and the lower end plate 2-2, and multiple reinforcing rib assemblies connecting the multiple longitudinal ribs 2-3 and spaced apart in the vertical direction. Each reinforcing rib assembly includes a circumferential rib 2-4 connecting two adjacent longitudinal ribs 2-3 and a connecting rib 2-5 arranged between the two mandrel portions 2. The connecting ribs 2-5 of the two mandrel portions 2 are detachably connected via connecting assemblies 4. In this example, there are five longitudinal ribs 2-3 evenly spaced along the circumference of the mandrel portion 2, two reinforcing rib assemblies, and correspondingly, four connecting assemblies 4.

[0046] Both the upper end plate 2-1 and the lower end plate 2-2 are fan-shaped plates, and the central angle of the fan-shaped plates is less than 180 degrees. After the two mandrel parts 2 are connected, the outer diameter of the entire mandrel matches the stator lamination 11, which meets the requirements of press fitting. When the top plate 3 and the connecting assembly 4 located at the top are removed, the outer diameter of the two mandrel parts 2 can be reduced by bringing them closer together, which facilitates the removal of the stator core.

[0047] The connecting assembly 4 includes a connecting plate 4-1 that is attached to two opposing connecting ribs 2-5 and two first connecting members 4-2 that connect the connecting plate 4-1 to the two connecting ribs 2-5. Preferably, the first connecting member 4-2 includes a bolt and a nut that mates with the bolt.

[0048] The base plate 1 is connected to the lower end plate 2-1 by a plurality of second connecting pieces 5, and the top plate 3 is connected to the upper end plate 2-2 by a plurality of third connecting pieces 7. Preferably, the second connecting pieces 5 and the third connecting pieces 7 are screws. The base plate 1 and the lower end plate 2-1 are provided with a plurality of screw holes for the second connecting pieces 5 to pass through, and the top plate 3 and the upper end plate 2-2 are provided with a plurality of screw holes for the third connecting pieces 7 to pass through.

[0049] To ensure the tightness between the base plate 1 and the lower end plate 2-1, and between the top plate 3 and the upper end plate 2-2, a plurality of first positioning elements 6 are provided between the base plate 1 and the lower end plate 2-1, and a plurality of second positioning elements 8 are provided between the top plate 3 and the upper end plate 2-2. Preferably, the first positioning elements 6 and the second positioning elements 8 are pins.

[0050] To facilitate the movement of the stator core, a hoisting assembly is provided on the top plate 3, which includes multiple hoisting screws 9 installed on the top plate 3.

[0051] To facilitate the pressing of the stator core, a guide key 10 is also provided, such as... Figures 7 to 9 As shown, the guide key 10 extends from the lower end plate 2-1 through one of the longitudinal ribs 2-3 to the top plate 3. The guide key 10 cooperates with the lamination slot on the stator lamination 11. Through the cooperation between the lamination slot and the guide key 10, the stator lamination 11 is stacked on the mandrel. Keyways are provided on the lower end plate 2-1, the longitudinal rib 2-3, the upper end plate 2-1 and the top plate 3 to fix the guide key 10.

[0052] The working principle of this utility model is as follows:

[0053] During installation, positioning pins that mate with the inner diameter of the mandrel are used to position the two mandrel parts 2. Then, the two mandrel parts 2 are connected to each other via the connecting assembly 4. The base plate 1 and top plate 3 are then installed at both ends of the mandrel. The stator core is stacked by the engagement of the guide key 10 with the lamination slots on the stator lamination 11. When the stator core needs to be disassembled, the top plate 3 and the upper connecting assembly 4 are first removed. Because there is a gap between the two mandrel parts 2, the outer diameter of the mandrel can be reduced by bringing the two mandrel parts 2 closer together, thus facilitating the removal of the stator core and avoiding damage to it.

[0054] In summary, this stacking fixture facilitates the disassembly of the stator core and avoids damage to the stator core.

[0055] The above examples are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A stacking fixture for motor stator cores, characterized in that, include: A mandrel includes two mandrel portions arranged symmetrically at intervals. Each mandrel portion includes a lower end plate, an upper end plate, a plurality of longitudinal ribs connecting the upper end plate and the lower end plate, and a plurality of reinforcing rib assemblies connecting the plurality of longitudinal ribs and arranged at intervals in the vertical direction. Each reinforcing rib assembly includes a circumferential rib connecting two adjacent longitudinal ribs and a connecting rib arranged between the two mandrel portions. The connecting ribs of the two mandrel portions are detachably connected via a connecting assembly. A base plate, which is detachably connected to the lower end plate and has an outer diameter larger than the outer diameter of the mandrel; The top plate is detachably connected to the upper end plate and its outer diameter is the same as that of the mandrel.

2. The stacking fixture for motor stator cores according to claim 1, characterized in that: The connecting assembly includes a connecting plate that is attached to two opposing connecting ribs and two first connecting pieces that connect the connecting plate to the two connecting ribs.

3. The stacking fixture for motor stator cores according to claim 2, characterized in that: The first connector includes a bolt and a nut that mates with the bolt.

4. The stacking fixture for motor stator cores according to claim 1, characterized in that: Both the upper and lower end plates are fan-shaped plates.

5. The stacking fixture for motor stator cores according to claim 1, characterized in that: The bottom plate is connected to the lower end plate via multiple second connectors, and the top plate is connected to the upper end plate via multiple third connectors.

6. The stacking fixture for motor stator cores according to claim 5, characterized in that: The second and third connecting parts are screws.

7. The stacking fixture for motor stator cores according to claim 1, characterized in that: A plurality of first positioning elements are provided between the bottom plate and the lower end plate, and a plurality of second positioning elements are provided between the top plate and the upper end plate.

8. The stacking fixture for motor stator cores according to claim 7, characterized in that: The first positioning element and the second positioning element are pins.

9. The stacking fixture for motor stator cores according to claim 1, characterized in that: The top plate is provided with a hoisting assembly, which includes a plurality of hoisting screws disposed on the top plate.

10. The stacking fixture for motor stator cores according to claim 1, characterized in that: It also includes a guide key that extends from the lower end plate through one of the longitudinal ribs to the top plate.

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