Rounding tool for motor stator

Abstract

A motor stator circle-splicing tool comprises a mounting seat which is provided with a plurality of connecting parts along the circumferential direction; the core shaft is fixedly arranged in the central area of the mounting seat; each inserting rod surrounds the core shaft and is arranged corresponding to the connecting part, and a mounting gap is formed between every two adjacent inserting rods; and the limiting piece is detachably connected with the insertion rod in a sleeving manner so as to adjust and fix the angle of the insertion rod. As the stator is positioned through the mandrel in the circle splicing tool, the circle center and the concentricity of the stator iron core obtained by splicing the stator blocks can be ensured, and the splicing seams of the stator blocks can be directly welded through the gaps between the insertion rods in the circle splicing tool, so that the transfer process is omitted, and the production efficiency is improved. The efficiency is improved, and meanwhile displacement deviation caused in the transferring process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor manufacturing technical field, concretely relates to a motor stator round assembling tool. BACKGROUND

[0002] The motor is usually divided into integral type and block type structure. Among them, the round assembling welding tool technology of the stator is commonly used in the production process of the block type motor. The block type stator core is formed by assembling a plurality of split stator blocks. The single split stator block is wound independently, and then the single split stator block is assembled to form a complete block type stator core. In the related art, the round assembling method of the stator is as follows: sequentially placing the single stator block into the pre-round assembling tool to fit the inner core rod to form a circle, then locking the stator with a hoop and taking it out, and then placing the hoop and the round assembled stator block on the welding tool, aligning the joint of the stator block with the welding joint of the welding tool, pressing the stator block into the welding tool, and then welding. It can be found that in the above-mentioned stator round assembling process, there is a transfer process, and the assembling and welding are carried out on two tools, which makes it difficult to ensure the center and concentricity of the stator during assembling and welding, and the process is complex. SUMMARY

[0003] The utility model mainly solves the problems of high complexity in the stator round assembling welding scheme in the related art and the difficulty in ensuring the center and concentricity of the stator.

[0004] In order to solve the above technical problems, the motor stator round assembling tool provided in the embodiments of the present application comprises:

[0005] The mounting seat is provided with a plurality of connecting portions along the circumferential direction of the outer edge region;

[0006] The mandrel is fixedly arranged in the center region of the mounting seat;

[0007] The at least three insertion rods are arranged around the mandrel, and each insertion rod is arranged corresponding to the connecting portion, and the adjacent insertion rods have an installation gap. The insertion rod has a first end and a second end arranged oppositely, the first end is rotatably connected with the connecting portion, so that the insertion rod can rotate at least along the radial direction of the mounting seat, and the second end can form a space for accommodating the stator core;

[0008] The limiting piece is detachably sleeved with the insertion rod to adjust and fix the angle of the insertion rod.

[0009] In one embodiment, the mounting seat comprises a base and a shaft seat, and the base and the shaft seat are sequentially arranged and fixedly connected along the axial direction. The connecting portion is a assembly groove, which is used for accommodating the first end and allowing the insertion rod to rotate along the radial direction based on the first end.

[0010] In one embodiment, the mandrel and the shaft seat form a detachable connection structure.

[0011] In one embodiment, the limiting member is circular, and the inner wall of the limiting member is in contact with the outer wall of each of the insertion rods.

[0012] In one embodiment, the inner diameter of the limiting member gradually increases in the direction close to the mounting seat.

[0013] In one embodiment, the outer diameter of the second end gradually decreases in the direction away from the first end.

[0014] In one embodiment, the inner wall of the limiting member is formed with a plurality of grooves distributed in the circumferential direction, the number and position of the grooves correspond to the insertion rods, and the grooves extend through the limiting member in the axial direction.

[0015] In one embodiment, the insertion rods are arranged opposite to the limiting grooves of the stator blocks; the limiting grooves are arranged on the outer edge of the stator blocks and extend in the axial direction.

[0016] In one embodiment, the number of insertion rods is consistent with the number of stator blocks to be circularly assembled.

[0017] In one embodiment, the inner diameter of the limiting member is adjustable.

[0018] The motor stator circular assembly tool according to the above embodiment can ensure the center and concentricity of the stator core obtained by assembling the stator blocks, and can directly weld the seams of the stator blocks through the gaps between the insertion rods in the circular assembly tool, thereby avoiding the transfer process, improving the efficiency, and avoiding the displacement deviation caused by the transfer process. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic diagram of a motor stator circular assembly tool assembling a stator core structure according to an embodiment of the present application.

[0020] Figure 2 FIG. 2 is a schematic diagram of a motor stator circular assembly tool assembling a stator core cross section according to an embodiment of the present application.

[0021] Figure 3 FIG. 3 is an exploded schematic diagram of a motor stator circular assembly tool assembling a stator core according to an embodiment of the present application.

[0022] Figure 4 FIG. 4 is a schematic diagram of a motor stator circular assembly tool structure according to an embodiment of the present application.

[0023] Figure 5A schematic view of a stator core structure in the embodiment of the present application.

[0024] Figure 6 A schematic view of a shaft seat structure in the embodiment of the present application.

[0025] Figure 7 A schematic view of a structure before a stator block of a motor stator assembly tool is assembled in the embodiment of the present application.

[0026] Figure 8 A top view of a structure before a stator block of a motor stator assembly tool is assembled in the embodiment of the present application.

[0027] Figure 9 A schematic view of a structure in which a stator block is inserted into a motor stator assembly tool in the embodiment of the present application.

[0028] Figure 10 A schematic view of a structure in which a plug rod is collected in a motor stator assembly tool in the embodiment of the present application.

[0029] Explanation of reference signs:

[0030] 1 - mounting seat; 11 - base; 12 - shaft seat; 13 - connecting part; 131 - assembly groove;

[0031] 2 - mandrel; 21 - assembly space;

[0032] 3 - plug rod; 31 - first end; 32 - second end; 33 - mounting gap;

[0033] 4 - limiting part;

[0034] 5 - stator core; 51 - stator block; 52 - limiting groove; 53 - joint gap. DETAILED DESCRIPTION

[0035] The present application will be further described in detail through specific embodiments in combination with the drawings. In different embodiments, similar elements are associated with similar element signs. In the following embodiments, many details are described in order to make the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different cases, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification in order to avoid the core part of the present application being overwhelmed by too much description, and it is not necessary to describe these related operations in detail for those skilled in the art according to the description in the specification and general technical knowledge in the art.

[0036] In addition, features described in the specification, operations or characteristics can be combined in any appropriate manner to form various embodiments. Meanwhile, the steps or actions in the method description can also be sequentially changed or adjusted in a manner that can be apparent to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment, and do not mean that the sequence is necessary, unless otherwise stated that a certain sequence must be followed.

[0037] The serial numbers of the components in the specification, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "coupling" in the present application include direct and indirect connection (coupling) unless otherwise specified.

[0038] In order to solve the problem that the splicing process of the block type stator core is complex and it is difficult to guarantee the stator center and concentricity in the related art, an electric machine stator circle splicing tool is provided in the embodiments of the present application, please refer to Figures 1 to 10 The electric machine stator circle splicing tool comprises:

[0039] The mounting seat 1 is provided with a plurality of connecting portions 13 in the circumferential direction close to the outer edge area;

[0040] The mandrel 2 is fixedly arranged in the center area of the mounting seat 1;

[0041] At least three insertion rods 3, each insertion rod 3 surrounds the mandrel 2, and each insertion rod 3 is arranged corresponding to the connecting portion 13, and the adjacent insertion rods 3 have an installation gap 33; the insertion rod 3 has a first end 31 and a second end 32 arranged oppositely, the first end 31 is rotatably connected with the connecting portion 13 so that the insertion rod 3 can rotate at least in the radial direction of the mounting seat 1, and the second end 32 can form a space for accommodating the stator core 5 with the mandrel 2;

[0042] The limiting piece 4 is detachably sleeved with the insertion rod 3 to adjust and fix the angle of the insertion rod 3.

[0043] The electric machine stator circle splicing tool provided in the embodiments of the present application is used to splice the stator blocks 51 to form a circular process equipment in the block type stator core 5 structure. The block type stator core 5 refers to the stator blocks 51 connected and fixed in sequence in the circumferential direction to form a ring-shaped stator core 5. The number and shape of the corresponding stator blocks 51 of the entire stator core 5 can be adjusted arbitrarily. Generally, the shape and size of each stator block 51 are the same, and each stator block 51 is spliced to form 360°.

[0044] The fixing mode between the stator blocks 51 is that after the stator blocks 51 are formed by being circularly assembled, the assembly seams of the stator blocks 51 are welded based on the structure of the circular assembly, so that the stator blocks 51 are fixed, and the required stator core 5 is obtained. Therefore, during the circular assembly process, it is necessary to ensure the center and concentricity of the stator core 5, and it is also necessary to ensure the space for welding.

[0045] In order to achieve the above purpose, please refer to Figures 1 to 4 The motor stator circular assembly tool in the embodiment of the application comprises a mounting base 1, a core shaft 2 and a plurality of insertion rods 3. The mounting base 1 serves as a connecting structure of various components, and functions to provide connection for the core shaft 2 and the insertion rods 3. The core shaft 2 can be fixedly connected with the mounting base 1, and the insertion rods 3 are rotatably connected with the mounting base 1.

[0046] The purpose of arranging the core shaft 2 is to provide positioning and guidance for the stator blocks 51. Please refer to Figure 5 The formed stator core 5 is a hollow annular structure, and the core shaft 2 is arranged in the hollow region of the formed stator core 5. Therefore, during the application of the motor stator circular assembly tool in the embodiment of the application, each stator block 51 is placed into the assembly space 21 between the core shaft 2 and the insertion rods 3 based on the surface of the core shaft 2, and the circular assembly operation is formed. For different sizes and shapes of the stator core 5, the size of the core shaft 2, including the length and the outer diameter, can be adjusted to adapt to different stator cores 5. Therefore, the core shaft 2 and the base 11 can be detachably connected, and the disassembly process can be achieved by arranging shafts and holes on the core shaft 2 and the base 11 respectively and fixing them through the cooperation between the shafts and the holes.

[0047] In addition to the core shaft 2 for guiding and positioning the stator blocks 51, in order to perform the circular assembly operation of the stator blocks 51, please refer to Figures 7 to 10 The motor stator circular assembly tool in the embodiment of the application further comprises a plurality of insertion rods 3. Each insertion rod 3 is distributed along the circumference of the mounting base 1, and each insertion rod 3 is rotatably connected with the mounting base 1. Specifically, each insertion rod 3 is arranged around the core shaft 2, and the insertion rod 3 and the core shaft 2 have an assembly space 21 therebetween, which is used to place the stator blocks 51. This means that the insertion rod 3 and the core shaft 2 do not directly contact each other, and the size of the assembly space 21 can be set according to the structure of the stator core 5 to be circularly assembled. Adjacent insertion rods 3 also have an installation gap 33 therebetween. During the circular assembly process, the stator blocks 51 are arranged around the core shaft 2, and the assembly seams 53 between adjacent stator blocks 51 are exposed through the installation gap 33 between adjacent insertion rods 3. Therefore, the assembly seams 53 can be directly welded without the need for transfer operation.

[0048] In order to facilitate the placement of the stator blocks 51, the insertion rods 3 are rotationally connected with the mounting base 1; wherein the insertion rods 3 have a first end 31 and a second end 32 along the length direction thereof, and the first end 31 is rotationally connected with the connecting portion 13 on the mounting base 1, and the rotational connection allows the insertion rods 3 to rotate at least along the radial direction of the mounting base 1, and the second end 32 of the insertion rods 3 can be moved away from the mandrel 2 along the radial direction of the mounting base 1, and the insertion rods 3 are radially arranged, so that the assembly space 21 between the insertion rods 3 and the mandrel 2 is increased in the direction away from the mounting base 1, which can facilitate the placement of the stator blocks 51 into the assembly space 21 before the circle assembling preparation, as shown in Figures 7 to 9 , and can facilitate the removal of the stator core 5 after the circle welding is completed. In addition, the insertion rods 3 rotationally connected with the mounting base 1 can provide adjustment space for different stator blocks 51, and can accommodate stator blocks 51 with different sizes within a certain range.

[0049] After the circle assembling of the stator blocks 51 is completed by the mandrel 2 and the insertion rods 3, the circle assembling result of the stator blocks 51 needs to be fixed; please refer to Figure 6 , in order to fix the circle assembling, the motor stator circle assembling tool in the embodiment of the application further comprises a limiting piece 4, and the limiting piece 4 is used to form a detachable connection with each insertion rod 3; wherein when the limiting piece 4 is not connected with the insertion rod 3, each insertion rod 3 can rotate relative to the mounting base 1; after the circle assembling of the stator blocks 51 is completed by the insertion rods 3 and the mandrel 2, the position of the insertion rods 3 is fixed by the limiting piece 4, and the position of the insertion rods 3 is fixed at the same time, and the position of each stator block 51 is locked, so that the circle assembling state of the stator blocks 51 is fixed. Then, the welding of the circle seam 53 of the stator blocks 51 can be performed based on the installation gap 33 between the insertion rods 3, and the required stator core 5 is obtained. After the welding is fixed, the connection between the limiting piece 4 and the insertion rod 3 can be released, and the insertion rod 3 is rotated to move the second end 32 of the insertion rod 3 away from the mandrel 2, so that the stator core 5 can be removed, and the circle assembling process of the stator core 5 is completed. It can be found that in the whole process, from the assembling to the welding, the stator blocks 51 are located in the motor stator circle assembling tool in the embodiment of the application, and there is no transfer process of the stator core 5, so that the center of the stator core 5 and the concentricity are guaranteed, and the assembly efficiency is improved.

[0050] In some optional embodiments, please refer to Figure 6In order to allow the insertion rod 3 to be rotatably connected with the mounting base 1 through the connecting portion 13 to adjust the local spacing between the insertion rod 3 and the mandrel 2, the mounting base 1 can specifically include a base 11 and a shaft seat 12, which are sequentially arranged along the axial direction and fixedly connected; the connecting portion 13 is a fitting groove 131, which is used to accommodate the first end 31 and allow the insertion rod 3 to rotate along the radial direction based on the first end 31. That is, the shaft seat 12 is formed with a plurality of fitting grooves 131, and the groove holes of the fitting grooves 131 form spaces for accommodating the insertion rod 3; in order to allow the insertion rod 3 to rotate along the radial direction based on the first end 31, the size of the fitting groove 131 along the radial direction of the shaft seat 12 is larger than the size of the first end 31 in the corresponding direction, and when the first end 31 of the insertion rod 3 is inserted into the fitting groove 131, the insertion rod 3 can also move along the active space provided by the fitting groove 131 for the insertion rod 3, thereby forming a rotatable connection between the insertion rod 3 and the shaft seat 12. Since the fitting groove 131 is larger than the insertion rod 3 along the radial direction, the movement direction of the insertion rod 3 is at least along the radial direction, and each insertion rod 3 can move radially relative to the mandrel 2. Among them, if the axial direction of the mandrel 2 is taken as the reference, the rotation angle range of the insertion rod 3 can be between -30° and +60°, wherein 0° refers to the direction of the insertion rod 3 being parallel to the direction of the mandrel 2, the positive angle refers to the included angle between the insertion rod 3 and the mandrel 2 when the second end 32 of the insertion rod 3 is farther away from the mandrel 2 than the first end 31, and the negative angle refers to the included angle between the insertion rod 3 and the mandrel 2 when the second end 32 of the insertion rod 3 is closer to the mandrel 2 than the first end 31. The greater the rotation angle range of the insertion rod 3, the more convenient it is to put in the stator block 51 and take out the stator core 5, and the greater the size adaptation range of the stator core 5. In addition, the connecting portion can also be rotatably connected with the insertion rod through a hinge or the like.

[0051] In some optional embodiments, the mandrel 2 and the shaft seat 12 form a detachable connection structure. This means that the mandrel 2 can be detached from the shaft seat 12, and different models of mandrels 2 can be replaced to adapt to different types of stator cores 5. Different stator cores 5 can have different inner ring sizes, so an appropriate mandrel 2 can be used to ensure that there is no gap between the stator block 51 and the mandrel 2 during splicing, and the center and concentricity are guaranteed.

[0052] In some optional embodiments, in order to simultaneously realize the connection of each insertion rod 3, the shape of the limiting piece 4 can be a circular ring, and the inner wall of the limiting piece 4 is in contact with the outer wall of each insertion rod 3. The limiting piece 4 is set to be a circular ring, and in use, the limiting piece 4 is sleeved on the outer surface of each insertion rod 3 participating in the circle assembly, so that the limiting piece 4 can integrally fix all the insertion rods 3. In addition, of course, each insertion rod 3 can be fixed separately, as long as the position of each insertion rod 3 is locked after the circle assembly process is completed. The circular ring limiting piece 4 in the embodiment of the application can integrally lock all the insertion rods 3, effectively improving the locking efficiency of the insertion rods 3.

[0053] In some optional embodiments, in order to facilitate the sleeving of the limiting piece 4 on each insertion rod 3, the inner diameter of the limiting piece 4 gradually increases in the direction close to the mounting seat 1. That is, the larger the size of the hollow part of the limiting piece 4 is, the easier it is to be sleeved on each insertion rod 3. During the movement of the limiting piece 4 close to the mounting seat 1, the inner diameter of the limiting piece 4 gradually decreases, so that the limiting piece 4 is gradually fixed and sleeved on the insertion rod 3.

[0054] In some optional embodiments, in order to facilitate the placement of the limiting piece 4 into the insertion rod 3 to form a connection between the limiting piece 4 and the insertion rod 3, the outer diameter of the second end 32 gradually decreases in the direction away from the first end 31. In other words, the second end 32 has a relatively reduced end portion, and the limiting piece 4 can slide along the inclined surface of the second end 32 during connection, which can facilitate the sleeving of the limiting piece 4 on the insertion rod 3, thereby ensuring the tightness of the connection between the limiting piece and the insertion rod 3.

[0055] In some optional embodiments, also in order to fix the insertion rod 3, in order to further better limit the position of each insertion rod 3, especially to prevent the insertion rod 3 from swinging, the inner wall of the limiting piece 4 can be formed with a plurality of grooves distributed in the circumferential direction, the number and position of the grooves correspond to the insertion rod 3, and the grooves extend through the limiting piece 4 in the axial direction. The grooves formed in the inner wall of the limiting piece 4 correspond one-to-one to the insertion rod 3, and the position of the insertion rod 3 can be limited through the grooves, so that the position of the insertion rod 3 can be completely locked to prevent the insertion rod 3 from swinging.

[0056] In some optional embodiments, in order to enable the stator block 51 to be arranged more accurately when being placed, a limiting groove 52 can be arranged on the outer edge of the stator block 51, and then the arrangement position of the insertion rod 3 is opposite to the limiting groove 52 of the stator block 51; the limiting groove 52 is arranged on the outer edge of the stator block 51 and extends in the axial direction. In this way, when the stator block 51 is placed, the groove on the stator block 51 matches the insertion rod 3, so that the insertion rod 3 is clamped on the stator block 51, which can play a guiding role and auxiliary fixation for the stator block 51, and improve the circle assembly efficiency of the stator block 51.

[0057] In some optional embodiments, in order to expose the joint gap 53 between each stator block 51 based on the installation gap 33 between adjacent insertion rods 3, the number of insertion rods 3 is consistent with the number of stator blocks 51 to be spliced, so as to facilitate the welding operation of the stator block 51. In this way, as long as the stator block 51 is placed one by one corresponding to the insertion rod 3, the joint gap 53 between adjacent stator blocks 51 will appear exactly at the installation gap 33 between adjacent insertion rods 3, and the operator can directly weld the joint gap 53 of the stator block 51 through the installation gap 33.

[0058] In some optional embodiments, in order to adapt to more different types of stator cores 5, the inner diameter of the limiting piece 4 can be adjustable.

[0059] The motor stator splicing tool provided by the embodiments of the present application can guarantee the center and concentricity of the stator core 5 obtained by splicing the stator blocks 51, and can directly weld the joint gap 53 of the stator block 51 through the gap of the insertion rod 3 in the splicing tool, which eliminates the transfer process, improves the efficiency, and avoids the displacement deviation caused by the transfer process.

[0060] The above application of specific examples to the utility model is described, which is only used to help understand the utility model, and does not limit the utility model. For those skilled in the art to which the utility model belongs, according to the idea of the utility model, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A motor stator circle assembling tool, characterized in that, The application relates to a stator assembly device for a motor, which comprises the following parts: a mounting base, which is provided with a plurality of connecting parts along the circumferential direction close to the edge area; a mandrel, which is fixedly arranged in the central area of the mounting base; at least three insertion rods, each of which surrounds the mandrel, and each of which is arranged corresponding to the connecting parts, and the adjacent insertion rods have an installation gap; the insertion rod has oppositely arranged first and second ends, the first end is rotationally connected with the connecting part, so that the insertion rod can rotate at least along the radial direction of the mounting base, and the second end can form a space for accommodating a stator core; a limiting part, which is detachably sleeved with the insertion rod to adjust and fix the angle of the insertion rod.

2. The motor stator round assembling tooling according to claim 1, characterized in that, The mounting base comprises a base and a shaft base; the connecting part is an assembly groove, which is used for accommodating the first end and allowing the insertion rod to rotate along the radial direction based on the first end.

3. The motor stator round assembling tooling according to claim 2, characterized in that, The mandrel and the shaft base form a detachable connection structure.

4. The motor stator round assembling tooling of claim 1, wherein, The limiting part is circular, and the inner wall of the limiting part is in contact with the outer wall of each insertion rod.

5. The motor stator round assembling tooling of claim 4, wherein, The inner diameter of the limiting part gradually increases along the direction close to the mounting base.

6. The motor stator round assembling tooling of claim 5, wherein, The outer diameter of the second end gradually decreases along the direction away from the first end.

7. The motor stator round assembling tooling of claim 4, wherein, The inner wall of the limiting part is formed with a plurality of grooves distributed along the circumferential direction, the number and position of the grooves correspond to the insertion rods, and the grooves penetrate through the limiting part along the axial direction.

8. The motor stator round assembling tooling according to any one of claims 1-7, characterized in that, The arrangement position of the insertion rod is opposite to the limiting groove of the stator block; the limiting groove is arranged on the outer edge of the stator block and extends along the axial direction.

9. The motor stator round assembling tooling according to any one of claims 1-7, characterized in that, The number of the insertion rods is consistent with the number of the stator blocks to be assembled.

10. The motor stator round assembling tool according to any one of claims 1-7, characterized in that, The inner diameter of the limiting part can be adjusted.

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