Motor iron core manufacturing method and motor iron core

Abstract

The invention discloses a motor iron core manufacturing method and a motor iron core, and belongs to the field of motor manufacturing, a plurality of single-layer coiled materials are unwound to form a single-layer plate, and at least one of the plurality of single-layer coiled materials is an amorphous material coiled material; the multiple single-layer plates are subjected to gluing; the multiple single-layer boards coated with glue are stacked to form a multi-layer board, the multi-layer board is solidified through glue, and the multi-layer board comprises at least one amorphous material layer; according to the manufacturing method, the motor iron core is manufactured by adopting part of or all amorphous materials, and the amorphous material layers can be punched by adopting a glue bonding multi-layer fixing mode, so that the manufacturing process of the motor iron core is simple, and the manufactured motor iron core is low in iron loss.

Description

Technical Field

[0001] The present invention relates to the field of motor manufacturing, and more particularly to a method for manufacturing a motor iron core and a motor iron core. Background Art

[0002] The manufacturing process of a motor iron core uses silicon steel strip materials to punch out the structural shape required for the iron core, stacks a certain number of silicon steel sheets together, and connects the sheets with buckles or glue. When the motor is working, due to the inherent magnetic conductivity and electrical conductivity of the silicon steel sheets, the iron core loss generated is relatively large and the working efficiency is relatively low.

[0003] To reduce iron loss, methods such as reducing the core magnetic flux density or using low-loss iron core materials are usually adopted. Compared with silicon steel sheets, amorphous alloys have excellent magnetic properties. Their magnetic permeability is higher than that of silicon steel sheets, and the loss is less than half of that of silicon steel sheets. Due to its excellent performance and simple process, it has become the research and development focus of the domestic and foreign materials science community since the 1980s. Using amorphous alloys to replace silicon steel materials in industrial motors can enable the motor to work at a higher frequency, thereby effectively improving the power density of the motor, reducing the volume of the motor, improving the motor efficiency, and achieving the purpose of high efficiency and energy saving.

[0004] However, amorphous alloy materials also have undeniable disadvantages: they are too hard and brittle, not easy to process and cut, and cannot be stamped with dies. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a method for manufacturing a motor iron core that can reduce iron loss.

[0006] In order to overcome the deficiencies of the prior art, another purpose of the present invention is to provide a motor iron core that can reduce iron loss.

[0007] One of the purposes of the present invention is achieved by adopting the following technical solutions:

[0008] A method for manufacturing a motor iron core includes the following steps:

[0009] Unwinding of single-layer coils: Unwind a plurality of single-layer coils to form single-layer plates, and at least one of the plurality of single-layer coils is an amorphous material coil;

[0010] Gluing of plates: Glue the plurality of single-layer plates;

[0011] Stacking of plates: Stack the glued plurality of single-layer plates to form a multi-layer plate, and the multi-layer plates are cured by glue, and the multi-layer plates contain at least one amorphous material layer;

[0012] Stamping: Stamp the multi-layer plate to form laminations of the motor iron core.

[0013] Further, in the step of unwinding the single-layer coils, the multiple single-layer coils include amorphous material coils and silicon steel coils.

[0014] Further, in the step of unwinding the single-layer coils, all of the multiple single-layer coils are amorphous material coils.

[0015] Further, when two adjacent layers of the multi-layer plates are of the same material, in the step of unwinding the single-layer coils, the installation directions of the corresponding single-layer coils are opposite, so that the two side surfaces of two adjacent layers of the multi-layer plates are turned over and stacked.

[0016] Further, in the step of stacking the plates, before the multi-layer plates are cured by glue, pressure application and exhaust are also required. The pressure application and exhaust are specifically as follows: applying pressure to the multi-layer plates coated with glue and stacked to discharge the air between the single-layer plates.

[0017] Further, the method for manufacturing the motor iron core further includes a winding step, which is located after the step of stacking the plates and before the stamping step. The winding step is specifically as follows: winding the multi-layer plates to form a multi-layer coil.

[0018] The second object of the present invention is achieved by adopting the following technical solution:

[0019] A motor iron core is manufactured by using any one of the above methods for manufacturing a motor iron core. The motor iron core has a multi-layer structure, at least one layer of which is an amorphous material layer, and the multi-layer structures are bonded together by glue.

[0020] Further, the motor iron core includes an amorphous material layer and a silicon steel layer. The number of the amorphous material layer and the silicon steel layer is at least one layer. The amorphous material layer and the silicon steel layer are bonded together by glue. When two adjacent layers are both amorphous material layers, the amorphous material layers are bonded together by glue; when two adjacent layers are both silicon steel layers, the silicon steel layers are bonded together by glue.

[0021] Further, the motor iron core is formed by bonding multiple amorphous material layers together with glue.

[0022] Compared with the prior art, the method for manufacturing the motor iron core of the present invention forms single-layer plates by unwinding multiple single-layer coils, and at least one of the multiple single-layer coils is an amorphous material coil; applies glue to the multiple single-layer plates; stacks the multiple single-layer plates after applying glue to form a multi-layer plate, and the multi-layer plates are cured by glue, and the multi-layer plate contains at least one amorphous material layer; punches the multi-layer plate to form laminations of the motor iron core and other steps. The motor iron core is manufactured using some or all amorphous materials, and through the method of bonding and fixing multiple layers with glue, the amorphous material layer can be punched, making the manufacturing process of the motor iron core simple and the iron loss of the manufactured motor iron core low. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a flowchart of the method for manufacturing the motor iron core of the present invention;

[0024] Figure 2 is Figure 1 the process diagram of the method for manufacturing the motor iron core of

[0025] Figure 3 is a schematic structural diagram of the first embodiment of the motor iron core of the present invention;

[0026] Figure 4 is a schematic structural diagram of the second embodiment of the motor iron core of the present invention;

[0027] In the figure: 1, coil rack; 100, single-layer coil; 2, glue; 3, glue application device; 6, pressing device; 8, heating device; 200, multi-layer plate; 9, winding device; 7, punching device; 201, amorphous material layer; 202, silicon steel layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be another intermediate component for fixing through the intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] The method for manufacturing the motor iron core of the present application is used to manufacture the motor iron core, and the motor iron core is a rotor or a stator. The thickness of the amorphous material is only 0.02 - 0.03 mm, and its strength is weak, so it cannot be stamped. In the prior art, the processing of the amorphous material is in the form of wire cutting, etc. When the amorphous material is applied to the manufacture of the motor iron core, although the iron loss can be reduced, due to the low thickness of the amorphous material, for the motor iron core of the same height, the number of laminated sheets of the amorphous material required is 10 times that of the silicon steel laminated sheets. Using wire cutting to process the amorphous material results in low production efficiency, so the method for manufacturing the motor iron core of the present application is produced.

[0032] Please refer to Figure 1 and Figure 2 , a method for manufacturing a motor iron core, comprising the following steps:

[0033] A method for manufacturing a motor iron core, comprising the following steps:

[0034] Unwinding of the single-layer coil 100: Unwind a plurality of single-layer coils 100 to form single-layer plates, and at least one of the plurality of single-layer coils 100 is an amorphous material coil;

[0035] Gluing of the plates: Glue the plurality of single-layer plates;

[0036] Stacking of the plates: Stack the glued plurality of single-layer plates to form a multi-layer plate 200, and the multi-layer plates 200 are cured by the glue 2, and the multi-layer plate 200 contains at least one amorphous material layer 201;

[0037] Stamping: Stamp the multi-layer plate 200 to form the laminated sheets of the motor iron core.

[0038] Specifically, in the step of unwinding the single-layer coil 100, the plurality of single-layer coils 100 are rotatably installed on the coil rack 1. The plurality of single-layer coils 100 are coils of amorphous material and coils of silicon steel material, or the plurality of single-layer coils 100 are all coils of amorphous material.

[0039] When multiple single-layer coils 100 are coils of amorphous material and coils of silicon steel material, the produced motor core is as shown in Embodiment 1. The coils of amorphous material form an amorphous material layer 201, and the thickness of the amorphous material layer 201 is 0.01 - 0.03 mm. The coils of silicon steel material form a silicon steel layer 202, and the thickness of the silicon steel layer 202 is 0.1 - 0.3 mm.

[0040] Since the coils of the same material are produced in the same batch, there is often a problem that the height difference exists on both sides of the coils in the same batch. The flatness of the surface of the core manufactured in this way does not meet the standard. Therefore, in the unwinding step of the single-layer coil 100, when the number of coils of the same material is multiple and multiple coils of the same material are adjacent to each other in the formed core, the installation methods of the multiple single-layer coils 100 on the coil rack 1 are opposite, so that the single-layer plates formed after subsequent unwinding and stacking have a flipping effect, that is, the two sides of the single-layer plate are the A side and the B side respectively. Along the stacking height direction, the single-layer plates are arranged alternately as the A side, the B side, the A side, and the B side, reducing the influence of the height difference on both sides during the production of the single-layer coil 100 in the same batch on the core manufacturing.

[0041] The specific step of gluing the plate is as follows: The gluing device 3 is filled with glue 2, and the single-layer plate formed after the single-layer coil 100 is unwound is immersed in the glue 2 so that both the upper and lower sides of the single-layer plate are coated with glue.

[0042] The specific step of stacking the plates is as follows: When the single-layer plate is removed from the glue, a stacked structure is formed. The stacked structure enters the pressing device 6, and the pressing device 6 presses against the stacked single-layer coils 100 through rollers to discharge the air between the stacked single-layer coils 100, reducing the air inside the core. After the air is exhausted, the stacked structure enters the heating device 8. Through heating, the glue 2 is cured to form a multi-layer plate 200. The multi-layer plate 200 includes at least one amorphous material layer 201.

[0043] The multi-layer plate 200 is first wound by the winding device 9 and then enters the stamping device 7 for stamping to form core laminations. By setting the winding device 9, the feeding speed of the stamping device 7 can be connected with the discharging speed of the heating device 8, avoiding the problem that the production line production rhythm cannot be controlled due to the inconsistent discharging speed of the heating device 8 and the processing speed of the stamping device 7.

[0044] Please continue to refer to Figure 3 and Figure 4 , this application also discloses a motor core manufactured by the above-mentioned motor core manufacturing method. The motor core is a multi-layer structure, and at least one layer in the multi-layer structure is an amorphous material layer 201, and the multi-layer structures are bonded by glue 2.

[0045] Specifically, the motor core has two structures, corresponding to Figure 3 andFigure 4 。

[0046] Figure 3 This is the first embodiment of the motor iron core. In the first embodiment, the motor iron core includes an amorphous material layer 201 and a silicon steel layer 202. The thickness of the amorphous material layer 201 is 0.01 - 0.03 mm, and the thickness of the silicon steel layer 202 is 0.1 - 0.3 mm. The amorphous material layer 201 and the silicon steel layer 202 are fixed by glue 2. In this embodiment, the number of amorphous material layers 201 can be one layer or multiple layers, and this application does not limit this. Adjacent amorphous material layers 201 are fixed by glue 2. When the number of amorphous material layers 201 is multiple layers, along the height direction, the amorphous material layers 201 are arranged alternately as side A, side B, side A, side B, reducing the influence on the iron core manufacturing due to the height difference between the two sides during the production of single-layer amorphous material coils of the same batch. In this embodiment, the number of silicon steel layers 202 can be one layer or multiple layers, and this application does not limit this. Adjacent silicon steel layers 202 are fixed by glue 2. When the number of silicon steel layers 202 is multiple layers, along the height direction, the silicon steel layers 202 are arranged alternately as side A, side B, side A, side B, reducing the influence on the iron core manufacturing due to the height difference between the two sides during the production of single-layer silicon steel material coils of the same batch.

[0047] Figure 4 This is the second embodiment of the motor iron core. In the second embodiment, the motor iron core only includes multiple amorphous material layers 201, and the multiple amorphous material layers 201 are fixed by glue 2. The thickness of the amorphous material layer 201 is 0.01 - 0.03 mm. Along the height direction, the amorphous material layers 201 are arranged alternately as side A, side B, side A, side B, reducing the influence on the iron core manufacturing due to the height difference between the two sides during the production of single-layer amorphous material coils of the same batch.

[0048] Compared with the prior art, the method for manufacturing the motor iron core of the present invention forms single-layer plates by unrolling multiple single-layer coils 100, and at least one of the multiple single-layer coils 100 is an amorphous material coil; applies glue to the multiple single-layer plates; stacks the glued multiple single-layer plates to form a multi-layer plate 200, and the multi-layer plates 200 are cured by glue 2, and the multi-layer plates 200 contain at least one amorphous material layer 201; punches the multi-layer plate 200 to form the laminations of the motor iron core and other steps. The motor iron core is manufactured using part or all of the amorphous material, and through the method of bonding and fixing multiple layers with glue 2, the amorphous material layer 201 can be punched, making the manufacturing process of the motor iron core simple and the manufactured motor iron core have low iron loss.

[0049] The above embodiments merely illustrate several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made. These are all equivalent modifications and evolutions made to the above embodiments based on the essential technology of the present invention, and all of these fall within the protection scope of the present invention.

Claims

1. A method for manufacturing a motor core, characterized in that: The following steps are involved: Single-layer coil unwinding: unwinding a plurality of single-layer coils to form a single-layer plate, wherein at least one of the plurality of single-layer coils is an amorphous material coil; Gluing the sheet material: gluing the plurality of single-layer sheets; Sheet stacking: a plurality of the single-layer sheets coated with glue are stacked to form a multi-layer sheet, the multi-layer sheets are solidified by glue, and the multi-layer sheet contains at least one amorphous material layer; Stamping: The multi-layer sheet is stamped to form laminations of the motor core.

2. The method for manufacturing a motor core according to claim 1, characterized in that: In the single-layer coil unwinding step, the plurality of single-layer coils include amorphous material coils and silicon steel coils.

3. The method for manufacturing a motor core according to claim 1, characterized in that: In the single-layer coil unwinding step, the plurality of single-layer coils are all amorphous material coils.

4. The method for manufacturing a motor core according to claim 1, characterized in that: When two adjacent layers of the multi-layer sheet are made of the same material, in the step of unwinding the single-layer coil, the corresponding single-layer coils are installed in opposite directions, so that the two side surfaces of the two adjacent layers of the multi-layer sheet are turned over and stacked.

5. The method for manufacturing a motor core according to claim 1, characterized in that: In the sheet stacking step, the multi-layer sheets need to be pressurized and exhausted before being cured by glue. The pressurized exhaust is specifically: pressurizing the multi-layer sheets coated with glue and stacked to discharge the air between the single-layer sheets.

6. The method for manufacturing a motor core according to claim 1, characterized in that: The motor core manufacturing method further includes a winding step, which is located after the plate stacking step and before the stamping step. The winding step specifically includes: winding the multi-layer plates to form a multi-layer coil.

7. A motor core manufactured by the motor core manufacturing method according to any one of claims 1 to 6, characterized in that: The motor core is a multi-layer structure, at least one layer of the multi-layer structure is an amorphous material layer, and the multi-layer structures are bonded together by glue.

8. The motor core according to claim 7, characterized in that: The motor core includes an amorphous material layer and a silicon steel layer, the number of the amorphous material layer and the silicon steel layer are both at least one layer, the amorphous material layer and the silicon steel layer are bonded to each other by glue, when two adjacent layers are both amorphous material layers, the amorphous material layers are bonded to each other by glue; when two adjacent layers are both silicon steel layers, the silicon steel layers are bonded to each other by glue.

9. The motor core according to claim 7, characterized in that: The motor core is formed by bonding a plurality of amorphous material layers to each other through glue.

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