Falling and assembling tool of stator silicon steel sheet for motor, assembling system and using method

Abstract

The invention relates to the technical field of motor assembling, in particular to a motor stator silicon steel sheet falling and assembling tool, an assembling system and a using method. A motor stator silicon steel sheet falling tool comprises a limiting assembly suitable for being in contact with the inner side wall of a wire groove of a silicon steel sheet, and the limiting assembly is used for limiting the silicon steel sheet to move at will. The invention provides a motor stator silicon steel sheet falling tool, an assembling system and a using method, and aims to solve the problem that in the falling process of silicon steel sheets, the silicon steel sheets cannot be aligned during stacking, so that the efficiency of the motor is affected due to the fact that the silicon steel sheets mounted in the motor cannot be aligned.

Description

Technical Field

[0001] The present invention relates to the technical field of motor assembly, and in particular to a mounting tool, an assembly system and a use method of a stator silicon steel sheet for a motor. Background Art

[0002] At present, the application of silicon steel sheets in motors is mainly to utilize their low hysteresis, low iron loss and high magnetic permeability. These characteristics enable silicon steel sheets to significantly reduce the hysteresis loss, iron loss and eddy current loss of the motor, thereby improving the efficiency and output torque of the motor. The importance of silicon steel sheet alignment is mainly reflected in reducing eddy current loss, improving motor efficiency and output torque, etc.

[0003] During the installation process of the silicon steel sheets of the existing motor, the silicon steel sheets cannot be aligned when stacked, so there is a situation where the silicon steel sheets installed in the motor cannot be aligned, thereby affecting the efficiency of the motor. Summary of the invention

[0004] In view of this, the present invention provides a mounting tool, an assembly system and a method for using stator silicon steel sheets for a motor, so as to solve the problem that during the mounting process of the silicon steel sheets, the silicon steel sheets cannot be aligned when stacked, resulting in the silicon steel sheets installed in the motor affecting the efficiency of the motor due to the inability to align.

[0005] In a first aspect, the present invention provides a tool for mounting stator silicon steel sheets for a motor, comprising:

[0006] A limit assembly is provided, wherein the limit assembly is adapted to contact the inner side wall of the wire slot of the silicon steel sheet, and the limit assembly is used to limit the silicon steel sheet from moving arbitrarily.

[0007] The wire grooves of the silicon steel sheets are limited by the limiting components to prevent the silicon steel sheets from moving arbitrarily, to achieve alignment between different silicon steel sheets, to avoid the situation where stacked silicon steel sheets cannot be aligned, to ensure the alignment of the silicon steel sheets during installation, and to improve the efficiency of the motor after installation.

[0008] In an optional embodiment, the limiting assembly includes a limiting sleeve, and the limiting sleeve is suitable for contacting the first inner side wall, the second inner side wall and the third inner side wall of the wire groove respectively.

[0009] In an optional embodiment, there is a clearance fit or a transition fit between the limiting sleeve and the inner wall of the wire groove.

[0010] In an optional implementation, the cross-section of the limiting sleeve is circular or trapezoidal.

[0011] In an optional embodiment, the limiting assembly further includes a core shaft, the limiting sleeve has a hollow through hole, and the outer circumferential surface of the core shaft is fitted with the inner circumferential wall of the limiting sleeve.

[0012] In an optional embodiment, the length of the core shaft is greater than the length of the limiting sleeve, and the core shaft is provided with a first connecting end and a second connecting end.

[0013] In an optional embodiment, it also includes a clamping assembly, which includes a first clamping plate, a second clamping plate and a fastener, the first clamping plate and the second clamping plate are used to clamp the stacked silicon steel sheets, the first clamping plate and the second clamping plate are respectively provided with through holes, the first connecting end passes through the through hole of the first clamping plate and is rotatably connected to the fastener, and the second connecting end passes through the through hole of the second clamping plate and is rotatably connected to the fastener.

[0014] In an optional embodiment, the first outer diameter of the first clamping plate is smaller than the third outer diameter of the silicon steel sheet, the first inner diameter of the first clamping plate is greater than or equal to the third inner diameter of the silicon steel sheet, the second outer diameter of the second clamping plate is smaller than the third outer diameter of the silicon steel sheet, and the second inner diameter of the second clamping plate is greater than or equal to the third inner diameter of the silicon steel sheet.

[0015] In a second aspect, the present invention further provides an assembly system, including the above-mentioned assembly tool for stator silicon steel sheets for motors.

[0016] In the third aspect, the present invention also provides a method for using a drop-in tool for stator silicon steel sheets for a motor, wherein a limit assembly is placed vertically, and the limit assembly is inserted into a wire slot of a silicon steel sheet. After the silicon steel sheet falls stably along the length direction of the limit assembly, the limit assembly is then inserted into a wire slot of another silicon steel sheet to make the silicon steel sheet fall, until several silicon steel sheets are stacked along the height direction to a preset height. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of a limit assembly, a clamping assembly and stacked silicon steel sheets according to an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of a limit assembly and stacked silicon steel sheets according to an embodiment of the present invention;

[0020] Figure 3 It is a half-section schematic diagram of the core shaft and the limiting sleeve according to an embodiment of the present invention.

[0021] Explanation of the accompanying drawings: 1. Limiting assembly; 101. Core shaft; 1011. First connecting end; 1012. Second connecting end; 102. Limiting sleeve; 2. Silicon steel sheet; 201. Wire groove; 2011. First inner wall; 2012. Second inner wall; 2013. Third inner wall; 202. Third inner diameter; 203. Third outer diameter; 3. Clamping assembly; 301. First clamping plate; 302. Second clamping plate; 3021. Through hole; 3022. Second inner diameter; 3023. Second outer diameter; 303. Fastener. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0023] Combine the following Figures 1 to 3 , describing an embodiment of the present invention.

[0024] According to an embodiment of the present invention, on the one hand, a drop-in tool for stator silicon steel sheets 2 for motors is provided, comprising: a limit assembly 1, the limit assembly 1 is suitable for contacting the inner wall of the wire slot 201 of the silicon steel sheet 2, and the limit assembly 1 is used to limit the silicon steel sheet 2 from any movement.

[0025] The wire groove 201 of the silicon steel sheet 2 is limited by the limiting component 1 to prevent the silicon steel sheet 2 from moving arbitrarily, to achieve alignment between different silicon steel sheets 2, to avoid the situation where the stacked silicon steel sheets 2 cannot be aligned, to ensure the alignment of the silicon steel sheets 2 during the installation process, and to improve the efficiency of the motor after installation.

[0026] In one embodiment, Figure 1 , Figure 2As shown, the limiting assembly 1 includes a limiting sleeve 102, and the limiting sleeve 102 is suitable for contacting the first inner side wall 2011, the second inner side wall 2012 and the third inner side wall 2013 of the wire slot 201 respectively. It should be noted that the wire slot 201 has a total of three inner side walls, namely, the first inner side wall 2011, the second inner side wall 2012 and the third inner side wall 2013. The limiting sleeve 102 contacts the three inner side walls respectively to limit the wire slot 201, and then limit the arbitrary movement of the silicon steel sheet 2 by limiting the wire slot 201. A limiting sleeve 102 limits the three inner side walls of the wire slot 201, limits the wire slot 201 in three directions, and a surface is determined by the limiting points in the three directions, thereby limiting the arbitrary movement of the wire slot 201, and then limiting the arbitrary movement of the entire silicon steel sheet 2. It should be noted that the silicon steel sheet 2 in this embodiment is annular.

[0027] In one embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the limiting sleeve 102 and the inner wall of the wire groove 201 are transitionally matched, and the transitionally matched can make the limiting sleeve 102 and the wire groove 201 have either a clearance fit or an interference fit, and when the limiting sleeve 102 and the inner wall of the wire groove 201 are in close contact, the two can also be easily installed and removed quickly. In addition, the transitional fit can also avoid scratches between the limiting sleeve 102 and the wire groove 201, and avoid assembly defects such as warping of the silicon steel sheet 2.

[0028] In one embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the cross section of the limiting sleeve 102 is circular. The circular limiting sleeve 102 is in point contact with the first inner side wall 2011, the second inner side wall 2012 and the third inner side wall 2013 of the wire groove 201, respectively, and there is a contact point with each inner side wall. Compared with surface contact, point contact can greatly reduce the scratch between the limiting sleeve 102 and the wire groove 201, thereby greatly reducing the probability of warping of the silicon steel sheet 2 during the assembly process, and ensuring the stability of the silicon steel sheet 2 after installation.

[0029] In one embodiment, Figure 1 , Figure 2As shown, the limiting assembly 1 also includes a mandrel 101, a limiting sleeve 102 having a hollow through hole, and the outer circumferential surface of the mandrel 101 is fitted with the inner circumferential wall of the limiting sleeve 102. The hollow through hole is circular, the outer circumferential surface of the mandrel 101 is circular, and the outer circumferential surface of the mandrel 101 is fitted with the inner circumferential wall of the limiting sleeve 102 to support the limiting sleeve 102. It should be noted that the number of limiting sleeves 102 of the limiting assembly 1 in this embodiment is several, and the inner diameter of the limiting sleeve 102 remains unchanged, while the outer diameter can be different, so as to adapt to the different sizes of wire grooves 201 of silicon steel sheets 2 of different specifications. When facing wire grooves 201 of different sizes, it is only necessary to replace the limiting sleeve 102 of the corresponding size without replacing the mandrel 101, so as to realize the connection between the two, so as to adapt different limiting sleeves 102 through the same mandrel 101, thereby reducing the use cost.

[0030] In one embodiment, Figure 1 , Figure 2 As shown, the length of the core shaft 101 is greater than the length of the limiting sleeve 102 , and the core shaft 101 is provided with a first connecting end 1011 and a second connecting end 1012 , so as to facilitate the connection of the core shaft 101 .

[0031] In one embodiment, Figure 3As shown, it also includes a clamping assembly 3, which includes a first clamping plate 301, a second clamping plate 302 and a fastener 303. The first clamping plate 301 and the second clamping plate 302 are used to clamp the stacked silicon steel sheets 2. The first clamping plate 301 and the second clamping plate 302 are respectively provided with through holes 3021. The first connecting end 1011 passes through the through hole 3021 of the first clamping plate 301 and is rotatably connected to the fastener 303. The second connecting end 1012 passes through the through hole 3021 of the second clamping plate 302 and is rotatably connected to the fastener 303. Specifically, the first connecting end 1011 and the second connecting end 1012 are both provided with external threads, the fastener 303 is a nut, and the size of the first connecting section and the second connecting end 1012 is smaller than the through hole 3021. After the stacking is completed, the stacked silicon steel sheets 2 are clamped between the first clamping plate 301 and the second clamping plate 302, and the iron core is formed by adjusting the fasteners 303 to achieve compression, and the clamped stacked silicon steel sheets 2 can also be assembled into the housing of the motor. It is important to note that the first clamping plate 301 and the second clamping plate 302 of this embodiment are both annular, and the first clamping plate 301 and the second clamping plate 302 have the same size, and the first clamping plate 301 and the second clamping plate 302 are respectively provided with at least three through holes 3021 with equal arcs, and the number and size of the through holes 3021 of the first clamping plate 301 and the second clamping plate 302 are the same. In this embodiment, the number of through holes 3021 is six, and the shape of the through hole 3021 is a slot with an opening, and the size of the slot is adapted to the size of the wire slot 201 (that is, the size is the same). In addition, if the silicon steel sheet 2 is not circular, the first clamping plate 301 and the second clamping plate 302 are also not circular, and the first clamping plate 301 and the second clamping plate 302 have the same shape as the silicon steel sheet 2 .

[0032] In one embodiment, Figure 3As shown, the first outer diameter of the first clamping plate 301 is smaller than the third outer diameter 203 of the silicon steel sheet 2, the first inner diameter of the first clamping plate 301 is larger than the third inner diameter 202 of the silicon steel sheet 2, the second outer diameter 3023 of the second clamping plate 302 is smaller than the third outer diameter 203 of the silicon steel sheet 2, and the second inner diameter 3022 of the second clamping plate 302 is larger than the third inner diameter 202 of the silicon steel sheet 2. When the first outer diameter of the first clamping plate 301 is smaller than the third outer diameter 203 of the silicon steel sheet 2 and the first inner diameter of the first clamping plate 301 is larger than the third inner diameter 202 of the silicon steel sheet 2, it is convenient for the silicon steel sheet 2 after stacking and assembling to be installed into the generator housing. Since the first outer diameter of the first clamping plate 301 is smaller than the third outer diameter 203 of the silicon steel sheet 2, the first clamping plate 301 will not contact the motor housing, and the first inner diameter of the first clamping plate 301 is larger than the third inner diameter 202 of the silicon steel sheet 2, thereby avoiding contact and collision between the first clamping plate 301 and the rotor in the silicon steel sheet 2; the second outer diameter 3023 of the second clamping plate 302 is smaller than the third outer diameter 203 of the silicon steel sheet 2, thereby avoiding contact and collision between the second clamping plate 302 and the rotor in the silicon steel sheet 2, and the second inner diameter 3022 of the second clamping plate 302 is larger than the third inner diameter 202 of the silicon steel sheet 2, thereby avoiding contact and collision between the second clamping plate 302 and the rotor in the silicon steel sheet 2. In this embodiment, Figure 2 As shown, the third inner diameter 202 of the silicon steel sheet 2 refers to the diameter corresponding to the arc at the opening of the wire slot 201.

[0033] According to an embodiment of the present invention, on the other hand, an assembly system is also provided, including the above-mentioned drop-in tooling for the stator silicon steel sheets 2 for the motor, and also including a robotic arm, which is used to move the stacked and assembled silicon steel sheets 2 into the casing of the generator for further assembly.

[0034] A method for using a drop-in tool for a stator silicon steel sheet 2 for a motor comprises the following steps:

[0035] (1) First, place the first clamping plate 301 on the mounting seat, and the first connecting end 1011 of the mandrel 101 passes through the through hole 3021 and cooperates with the fastener 303 to keep the mandrel 101 in an upright state. Select a limiting sleeve 102 that is compatible with the wire groove 201 of the silicon steel sheet 2 to be laminated, and sleeve the limiting sleeve 102 on the outer circumferential surface of the mandrel 101 to keep the limiting sleeve 102 in an upright state;

[0036] (2) Arrange two groups of matching mandrels 101 and limiting sleeves 102 of equal arc on the first clamping plate 301, and match the wire groove 201 to be limited of the silicon steel sheet 2 with the limiting sleeve 102, so that the silicon steel sheet 2 slowly slides along the limiting sleeve 102, and stacks the silicon steel sheets 2 one by one until a preset height is reached to complete the assembly. The limiting sleeve 102 and the three inner side walls of the wire groove 201 are all in point contact.

[0037] (3) After the assembly is completed, the second clamping plate 302 is placed on the stacked silicon steel sheets 2 and locked with the second connecting end 1012 by the fastener 303 to complete the drop-in step. Then, it is installed into the housing of the generator by the robot arm, and the first clamping plate 301 and the second clamping plate 302 are removed. Since the limiting sleeve 102 and the inner wall of the wire groove 201 are transitionally matched, the limiting sleeve 102 and the wire groove 201 are separated by other tooling to finally complete the assembly of the silicon steel sheets 2.

[0038] It should be noted that during the assembly process, the limit sleeve 102 can enter the through hole 3021 (but the part of the limit sleeve 102 entering the through hole 3021 cannot exceed the thickness of the clamping plate), or it may not enter the through hole 3021. In this way, the adaptation range of the limit sleeve 102 to the thickness of the stacked silicon steel sheet 2 can be expanded to a certain extent.

[0039] The mounting fixture for stator silicon steel sheets 2 for motors provided by the present invention has the following advantages: (1) the limiting sleeve 102 is designed to be circular, which reduces the processing difficulty and saves processing time and cost compared with other irregular shapes; (2) the limiting sleeve 102 and the three inner walls of the wire slot 201 are all in point contact. Compared with the warping easily caused by the surface contact of the sleeve with an irregular shape, the point contact can effectively reduce the probability of the silicon steel sheet 2 warping during the stacking process; (3) limiting sleeves 102 of different sizes and heights are designed, and different limiting sleeves 102 can be matched with one core shaft 101, which can reduce the processing cost and improve the adaptability of the limiting component 1. There is no need to process new mounting fixtures for different silicon steel sheets 2; (4) the wire slot 201 of the silicon steel sheet 2 is limited by the limiting component 1 to prevent the silicon steel sheet 2 from moving arbitrarily, so as to achieve alignment between different silicon steel sheets 2 and avoid confusion.

[0040] As an alternative embodiment, the limiting sleeve 102 and the inner wall of the wire groove 201 are clearance fit. It should be noted that the clearance of the clearance fit is particularly small, ranging from 0.005 to 0.04 mm, to achieve position limitation. The selection of the matching mode (transition fit and clearance fit) between the limiting sleeve 102 and the inner wall of the wire groove 201 depends on the application and specific process assembly requirements.

[0041] As an alternative embodiment, the cross-section of the limiting sleeve 102 is a trapezoid, and the two oblique sides of the trapezoid are respectively fitted with the first inner wall 2011 and the second inner wall 2012, and the bottom surface of the trapezoid is fitted with the third inner wall 2013 to conform to the shape of the wire groove 201, thereby playing the role of positioning and limiting the wire groove 201.

[0042] As an alternative implementation, the first inner diameter of the first clamping plate 301 is equal to the third inner diameter 202 of the silicon steel sheet 2 , and the second inner diameter 3022 of the second clamping plate 302 is equal to the third inner diameter 202 of the silicon steel sheet 2 .

[0043] As an alternative implementation, the shape of the via hole 3021 may also be a round hole.

[0044] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A tool for mounting stator silicon steel sheets for motors, characterized in that: include: A limiting component (1), wherein the limiting component (1) is suitable for contacting the inner side wall of the wire groove (201) of the silicon steel sheet (2), and the limiting component (1) is used to limit the silicon steel sheet (2) from moving arbitrarily.

2. The assembly tool for stator silicon steel sheets for motors according to claim 1, characterized in that: The limiting assembly (1) comprises a limiting sleeve (102), and the limiting sleeve (102) is suitable for contacting the first inner side wall (2011), the second inner side wall (2012) and the third inner side wall (2013) of the wire groove (201), respectively.

3. The assembly tool for stator silicon steel sheets for motors according to claim 2, characterized in that: The limiting shaft sleeve (102) and the inner wall of the wire groove (201) are clearance-fitted or transition-fitted.

4. The assembly tool for stator silicon steel sheets for motors according to claim 2, characterized in that: The cross section of the limiting shaft sleeve (102) is circular or trapezoidal.

5. The assembly tool for stator silicon steel sheets for motors according to claim 4, characterized in that: The limiting assembly (1) further comprises a core shaft (101), the limiting sleeve (102) having a hollow through hole, and the outer peripheral surface of the core shaft (101) is arranged in close contact with the inner peripheral wall of the limiting sleeve (102).

6. The assembly tool for stator silicon steel sheets for motors according to claim 5, characterized in that: The length of the core shaft (101) is greater than the length of the limiting sleeve (102), and the core shaft (101) is provided with a first connecting end (1011) and a second connecting end (1012).

7. The tooling for mounting stator silicon steel sheets for motors according to claim 6, characterized in that: The invention also comprises a clamping assembly (3), wherein the clamping assembly (3) comprises a first clamping plate (301), a second clamping plate (302) and a fastener (303); the first clamping plate (301) and the second clamping plate (302) are used to clamp the stacked silicon steel sheets (2); the first clamping plate (301) and the second clamping plate (302) are respectively provided with through holes (3021); the first connecting end (1011) passes through the through hole (3021) of the first clamping plate (301) and is rotatably connected to the fastener (303); the second connecting end (1012) passes through the through hole (3021) of the second clamping plate (302) and is rotatably connected to the fastener (303).

8. The assembly tool for stator silicon steel sheets for motors according to claim 7, characterized in that: The first outer diameter of the first clamping plate (301) is smaller than the third outer diameter (203) of the silicon steel sheet (2), the first inner diameter of the first clamping plate (301) is greater than or equal to the third inner diameter (202) of the silicon steel sheet (2), the second outer diameter (3023) of the second clamping plate (302) is smaller than the third outer diameter (203) of the silicon steel sheet (2), and the second inner diameter (3022) of the second clamping plate (302) is greater than or equal to the third inner diameter (202) of the silicon steel sheet (2).

9. An assembly system, characterized in that: A tool for mounting a stator silicon steel sheet (2) for a motor comprising the tool described in any one of claims 1 to 8.

10. A method for using a fixture for mounting stator silicon steel sheets for a motor, used for using the fixture for mounting stator silicon steel sheets for a motor according to claim 1, characterized in that: The limiting assembly (1) is placed vertically, and the limiting assembly (1) is inserted into the wire groove (201) of a silicon steel sheet (2). After the silicon steel sheet (2) falls stably along the length direction of the limiting assembly (1), the limiting assembly (1) is then inserted into the wire groove (201) of another silicon steel sheet (2) to make the silicon steel sheet (2) fall, until a plurality of silicon steel sheets (2) are stacked in the height direction to a preset height.

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