A stator core pre-circular jig

Abstract

The present invention discloses a stator core pre-circular assembly jig, comprising a cylindrical assembly disk, a hollow cylindrical inner wall within the cylindrical assembly disk, a plurality of first slot-shaped mounting positions and a plurality of second slot-shaped mounting positions arranged along the circumference of the inner wall of the hollow cylindrical inner wall along the axial direction of the hollow cylindrical inner wall. A plurality of core positioning blocks, wherein the core positioning blocks are mounted in the first slot-shaped mounting positions. A plurality of core elastic fixing blocks, wherein the core elastic fixing blocks are mounted in the second slot-shaped mounting positions, each core elastic fixing block comprising a slot-shaped mounting seat, a core fixing block, and a compression spring. The upper end of the core fixing block is hinged to the slot-shaped mounting seat, a compression spring is arranged on the rear side of the lower end of the core fixing block to abut against the slot-shaped mounting seat, and an external protrusion is arranged on the front side of the lower end of the core fixing block. The core positioning block and the core fixing block form a cavity for placing the stator core to complete the pre-rounding. The outer protrusion of the core fixing block abuts the pre-rounded stator core to prevent it from falling, thereby achieving pre-rounding of the stator core.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a stator core pre-circularizing jig for a circular stator of a motor. Background Art

[0002] The circular stator is a process of splicing multiple stator core blocks into a complete circular ring shape through specific processes and technical means. After the blocks are assembled, the gaps between the blocks are laser welded. The design and application of the circular stator bring many advantages. First of all, its design makes the entire assembly process convenient and simple, which not only improves the yield and consistency of the core assembly, but also ensures the stability of the motor performance and the improvement of production efficiency. In addition, this stator design can be flexibly and quickly replaced according to the needs of the number and size changes of the motor core, further improving the yield and production efficiency. These characteristics give the circular stator a significant advantage in the application of servo motors and other fields, especially in improving production efficiency and ensuring product quality. The key to round stator assembly lies in the yield and consistency of the assembled stator core segments. Existing stator round assembly equipment presents technical difficulties in loading two consecutively wound stator segments. This means that coils are wound on one adjacent segment and then on the other. The automated loading system used in existing equipment can easily cause the transition line between the segments to break when grasping the two segments, resulting in defective products. Therefore, the research and development of tooling for loading stator core segments of this type is urgently needed to address this issue. Summary of the Invention

[0003] In response to the above problems, the present invention proposes a stator core pre-circularization jig, into which the core blocks to be circularized are placed. The internal structure of the jig realizes pre-circularization of the core blocks, and is beneficial to protecting the transition wires of the two continuously wound coils from breaking, while also being beneficial to the yield and consistency of the circularization.

[0004] The technical solution disclosed in the present invention is a stator core pre-circularization jig, comprising:

[0005] A cylindrical assembly disk having a hollow cylindrical inner wall, wherein the hollow cylindrical inner wall is provided with a plurality of first groove-shaped mounting positions along the axial direction of the hollow cylindrical inner wall and a plurality of second groove-shaped mounting positions along the axial direction of the hollow cylindrical inner wall, and the first groove-shaped mounting positions and the second groove-shaped mounting positions are arranged alternately, and the plurality of first groove-shaped mounting positions and the plurality of second groove-shaped mounting positions form a circle;

[0006] a plurality of core positioning blocks, wherein the core positioning blocks are installed in the first groove-shaped installation position;

[0007] a plurality of elastic iron core fixing blocks, each of which is installed in the second groove-shaped mounting position, wherein each elastic iron core fixing block comprises a groove-shaped mounting seat, an iron core fixing block, and a compression spring; the upper end of the iron core fixing block is hinged to the groove-shaped mounting seat, the compression spring is provided on the rear side of the lower end of the iron core fixing block to abut against the groove-shaped mounting seat, and the front side of the lower end of the iron core fixing block is provided with an external protrusion;

[0008] Among them, the core positioning block and the rear side wall of the groove-shaped mounting seat are provided with screw connection holes, and the first groove-shaped mounting position and the second groove-shaped mounting position corresponding to the side wall of the cylindrical assembly disk are provided with through holes. The core positioning block and the groove-shaped mounting seat are connected to the cylindrical assembly disk by screws. The core positioning block and the core fixing block form a cavity for placing the stator core to complete the pre-circular assembly. The pre-circularized stator core is abutted by the outer protrusion on the front side of the lower end of the core fixing block to prevent it from falling, thereby realizing the pre-circular assembly of the stator core.

[0009] It further includes a placement seat for placing the stator core pre-circularization jig, the placement seat including a placement plate, a chassis, and a support column. A circular through hole is provided in the placement plate, and the support columns include at least three. The support columns are vertically and evenly supported and connected between the placement plate and the chassis. A base mounting column is provided on the chassis, and the base mounting column passes through the circular through hole and is coaxial with the circular through hole. The aperture of the circular through hole is adapted to the outer diameter of the cylindrical assembly plate, and the base mounting column is provided with an inner diameter base adapted to the inner diameter of the stator core to be pre-circularized.

[0010] Furthermore, the outer wall of the cylindrical assembly disk is provided with a convex portion perpendicular to the outer wall, the lower end of the cylindrical assembly disk is inserted into the circular through hole, and the convex portion abuts against the top of the circular through hole.

[0011] Furthermore, the left and right sides of the convex edge of the cylindrical assembly disk are respectively provided with a centrally symmetrical left straight edge and a right straight edge, and the rear side of the convex edge of the cylindrical assembly disk is provided with a rear straight edge, and the rear straight edge is perpendicular to the left straight edge and the right straight edge. Anti-wear pads are provided on the left straight edge, the right straight edge and the rear straight edge, and a C-shaped groove is provided on the inner side of the anti-wear pad, which is buckled on the left straight edge, the right straight edge and the rear straight edge through the C-shaped groove and fixed by glue or screws.

[0012] Furthermore, the first groove-shaped mounting position is a plurality of evenly distributed convex strips with isosceles trapezoidal cross-sections processed by CNC on the inner wall of the cylindrical assembly disk, and the inner side surfaces of the convex strips are radially toward the axis inside the cylindrical assembly disk, and the first square grooves are processed by CNC on the inner side surfaces of the convex strips. The first square grooves and the convex strips constitute the first groove-shaped mounting position, and a second square groove is formed between adjacent convex strips, and the second square groove is the second groove-shaped mounting position.

[0013] Furthermore, the core positioning block is in the shape of a strip-shaped square block, the rear side of the core positioning block is embedded in the first square groove and fixed by screws, and the front side of the strip-shaped square block is provided with an arc-shaped convex portion in the center along the length direction, and the arc-shaped convex portion is used to adapt and position the arc-shaped groove on the outer wall of the stator core to be pre-rounded.

[0014] Furthermore, the core fixing block is in the shape of a strip-shaped square, and the outer protrusion on the front side of the lower end of the core fixing block is two "teardrop-shaped" protrusions that gradually protrude downward along the two sides of the front side of the core fixing block. The "teardrop-shaped" protrusions on the front side of the lower end of all the core fixing blocks form a circular elastic clamping part, which is used to clamp and fix the stator core to be pre-assembled into a circle.

[0015] Furthermore, a retaining ring is provided at the upper end of the cylindrical assembly disk and the outer position of the core positioning block and the core fixing block. The inner side of the retaining ring and the upper end of the core fixing block reserve space for the core fixing block to realize arc movement of the upper end of the core fixing block through the elasticity of the compression spring.

[0016] Furthermore, a pair of handle bars are provided at symmetrical positions on the outer wall of the cylindrical assembly tray, and the cylindrical assembly tray is lifted by the handle bars.

[0017] Furthermore, a plurality of rollers are evenly arranged at the bottom of the chassis, and the rollers facilitate the movement of the placement seat and the stator core pre-circular jig.

[0018] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that the present solution manually places the stator core to be pre-assembled into the cylindrical assembly disk designed by the present solution. The circular insertion cavity is composed of multiple core positioning blocks and multiple core elastic fixing blocks. Since the core positioning blocks are used to insert the arc grooves on the outer wall of the stator core to be pre-assembled into the arc convex strips of the core positioning blocks, the position can be quickly found. At the same time, the lower end of the core fixing block is provided with an external protrusion, and the external protrusion is formed by a compression spring in a natural state and is contracted toward the axis. In this way, the outer wall of the lower end of the stator core to be pre-assembled is abutted, so that the stator core to be pre-assembled will not fall from the inside of the cylindrical assembly disk. Furthermore, the jig enables the inserted stator core to be pre-circularized, making it easy to place the cylindrical assembly tray containing the pre-circularized stator core onto the stator circular welding equipment. The pre-circularized stator core in the jig is pressed downward by the downward pressure device, allowing the pre-circularized stator core to be quickly and completely and uniformly placed into the corresponding tooling of the circular welding equipment, greatly improving the yield and consistency of the circular welding process of the stator core. Furthermore, the use of the jig satisfies the need for manual loading, improving loading efficiency and smoothness, and avoiding the situation where the transition line between the two blocks is broken during loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structural decomposition of an embodiment of a jig for pre-circling the stator core of the present invention.

[0020] Figure 2 This is a partial schematic diagram of the core positioning block and the core elastic fixing block of the stator core pre-circularization jig of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the core fixing block of the stator core pre-circularization jig of the present invention.

[0022] Figure 4 It is a three-dimensional schematic diagram of the overall structure of the stator core pre-circular assembly jig of the present invention.

[0023] Figure 5 This is a principle effect diagram of the lower end of the circular stator of the present invention being abutted by the elastic fixing block of the iron core.

[0024] Figure 6 The figure is a schematic diagram of a circular stator structure.

[0025] Reference numerals:

[0026] 1. Cylindrical assembly plate; 101. First groove-shaped mounting position; 102. Second groove-shaped mounting position; 2. Core positioning block; 3. Core fixing block; 301. External protrusion; 4. Grooved mounting seat; 5. Compression spring; 6. Placement plate; 61. Round through hole; 7. Chassis; 8. Support column; 9. Base mounting column; 10. Inner diameter base; 11. Anti-wear pad; 12. Handle bar; 13. Retaining ring; 14. Roller mounting hole; 15. Roller; 100. Arc groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present disclosure, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts are also within the scope of protection of the present disclosure.

[0028] Please refer to Figures 1 to 4 , is an embodiment of a stator core pre-circular jig provided by the present technical solution, the stator core pre-circular jig comprises: a cylindrical assembly plate 1, the cylindrical assembly plate 1 has a hollow cylindrical inner wall, the hollow cylindrical inner wall is provided with a plurality of first slot-shaped mounting positions 101 along the axial direction of the hollow cylindrical inner wall, and a plurality of second slot-shaped mounting positions 102 along the axial direction of the hollow cylindrical inner wall, and the first slot-shaped mounting positions 101 and the second slot-shaped mounting positions 102 are arranged alternately, and the plurality of first slot-shaped mounting positions 101 and the plurality of second slot-shaped mounting positions 102 are arranged alternately. 02 is surrounded by a circle; a plurality of core positioning blocks 2, the core positioning block 2 is installed in the first groove-shaped mounting position 101; a plurality of core elastic fixing blocks, the core elastic fixing block is installed in the second groove-shaped mounting position 102, each core elastic fixing block includes a groove-shaped mounting seat 4, a core fixing block 3, and a compression spring 5, the upper end of the core fixing block 3 is hinged to the groove-shaped mounting seat 4, the compression spring 5 is arranged on the rear side of the lower end of the core fixing block 3 to abut against the groove-shaped mounting seat 4, and the front side of the lower end of the core fixing block 3 is provided with an external protrusion 301.

[0029] Among them, the rear side walls of the core positioning block 2 and the grooved mounting seat 4 are provided with screw connection holes, and the first grooved mounting position 101 and the second grooved mounting position 102 corresponding to the side walls of the cylindrical assembly disk 1 are provided with through holes. The core positioning block 2 and the grooved mounting seat 4 are connected to the cylindrical assembly disk 1 by screws, and the core positioning block 2 and the core fixing block 3 form a cavity for placing the stator core to complete the pre-circular assembly. The outer protrusion 301 on the front side of the lower end of the core fixing block 3 abuts the pre-circularized stator core and prevents it from falling, thereby realizing the pre-circular assembly of the stator core.

[0030] In a preferred embodiment, a placement seat for placing the stator core pre-circular jig is also included. The placement seat includes a placement plate 6, a base plate 7, and a support column 8. A circular through hole 61 is provided in the placement plate 6. The support column 8 includes at least three columns. The support column 8 is vertically and evenly supported and connected between the placement plate 6 and the base plate 7. A base mounting column 9 is provided on the base plate 7. The base mounting column 9 passes through the circular through hole 61 and is coaxial with the circular through hole 61. The aperture of the circular through hole 61 is adapted to the outer diameter of the cylindrical assembly plate 1. The base mounting column 9 is provided with an inner diameter base 10 adapted to the inner diameter of the stator core to be pre-circularized. The inner diameter base 10 is a cylinder. The diameter of the cylinder is adapted to the inner diameter of the pre-circularized stator, which is conducive to the pre-circularized stator core being inserted into the inner diameter base 10, so as to better realize the rapid placement of the stator core to be pre-circularized and improve the loading efficiency.

[0031] Furthermore, the outer wall of the cylindrical assembly plate 1 is provided with a convex portion perpendicular to the outer wall, and the lower end of the cylindrical assembly plate 1 is inserted into the circular through hole 61, and the convex portion abuts against the upper part of the circular through hole 61. Preferably, the bottom of the chassis 7 is provided with a plurality of rollers 15 arranged evenly, which facilitate the movement of the placement seat and the stator core pre-circularization jig.

[0032] Reference Figure 1 Furthermore, the left and right sides of the convex edge of the cylindrical assembly disk 1 are respectively provided with a centrally symmetrical left straight edge and a right straight edge. The rear side of the convex edge of the cylindrical assembly disk 1 is provided with a rear straight edge, and the rear straight edge is perpendicular to the left straight edge and the right straight edge. The left straight edge, the right straight edge and the rear straight edge are all provided with anti-wear pads 11. The inner side of the anti-wear pad 11 is provided with a C-shaped groove, which is engaged with the left straight edge, the right straight edge and the rear straight edge through the C-shaped groove and fixed by gluing or screws. The provision of the anti-wear pad 11 is, on the one hand, used to place the cylindrical assembly disk 1 equipped with the pre-assembled stator core on the placement seat, playing a role of buffering and anti-wear. On the other hand, it is used to place the cylindrical assembly disk 1 equipped with the pre-assembled stator core on the workstation of the stator assembly welding equipment for positioning in the subsequent process, and also plays a role of buffering and anti-wear. The anti-wear pad 11 is preferably made of wear-resistant rubber material.

[0033] Furthermore, the first groove-shaped mounting position 101 is a plurality of evenly distributed convex strips with isosceles trapezoidal cross-sections machined on the inner wall of the cylindrical assembly disk 1 by CNC, and the inner side surfaces of the convex strips are radially toward the axis inside the cylindrical assembly disk 1, and the first square grooves are machined on the inner side surfaces of the convex strips by CNC. The first square grooves and the convex strips constitute the first groove-shaped mounting position 101, and a second square groove is formed between adjacent convex strips, and the second square groove is the second groove-shaped mounting position 102.

[0034] Please refer to Figure 2 Furthermore, the core positioning block 2 is in the shape of a strip-shaped square block, the rear side of the core positioning block 2 is embedded in the first square groove and fixed by screws, and the front side of the strip-shaped square block is provided with an arc-shaped convex portion in the center along the length direction, and the arc-shaped convex portion is used to adapt and position the arc-shaped groove 100 on the outer wall of the stator core to be pre-rounded.

[0035] Please refer to Figure 3 Furthermore, the core fixing block 3 is in the shape of a strip-shaped square block. The outer protrusion 301 on the front side of the lower end of the core fixing block 3 is two "teardrop-shaped" protrusions that gradually protrude downward along the two sides of the front side of the core fixing block 3. The "teardrop-shaped" protrusions on the front side of the lower end of all the core fixing blocks 3 form a circular elastic clamping portion for clamping and fixing the stator core to be pre-assembled into a circle. A slot for horizontally inserting the compression spring 5 is provided on the rear side of the core fixing block 3. The rear end of the compression spring 5 abuts against the slotted mounting seat 4 (refer to Figure 5 ).

[0036] Please refer to Figures 1 to 6 A retaining ring 13 is provided at the upper end of the cylindrical assembly plate 1 and around the core positioning block 2 and the core fixing block 3. Space is reserved between the inner side of the retaining ring 13 and the upper end of the core fixing block 3 for the elastic arc movement of the core fixing block 3 achieved by the compression spring 5. Furthermore, a pair of handle bars 12 are provided at symmetrical positions on the outer wall of the cylindrical assembly plate 1, which are used to lift the cylindrical assembly plate 1.

[0037] The working process of this scheme is as follows: manually place the stator core to be pre-assembled into the cylindrical assembly plate 1 designed by this scheme, and the circular insertion cavity is composed of multiple core positioning blocks 2 and multiple core elastic fixing blocks. Since the core positioning block 2 is used to realize the arc groove 100 on the outer wall of the stator core to be pre-assembled (refer to Figure 6 ) corresponding to the arc convex strip of the core positioning block 2 (refer to Figure 2 ), so that the position can be found quickly. At the same time, the lower end of the core fixing block 3 is provided with an outer protrusion 301, and the outer protrusion 301 is in a natural state and is formed by the compression spring 5 to be retracted toward the axis, so that the outer wall of the lower end of the stator core to be pre-rounded is abutted (refer to Figure 5), so that the stator core to be pre-assembled will not fall out of the cylindrical assembly tray 1. Furthermore, the stator core to be inserted is pre-assembled by the jig, making it convenient to place the cylindrical assembly tray 1 containing the pre-assembled stator core on the stator assembly welding equipment. The pre-assembled stator core in the jig is pressed downward by the pressing device, and the outer protrusion 301 of the core fixing block 3 is pressed backward, so that the pre-assembled stator core can be quickly and completely placed into the corresponding tooling of the assembly welding equipment, thereby greatly improving the yield and consistency of the assembly welding process of the stator core.

[0038] The specification of this embodiment is attached Figure 6 The structural diagram of the circular stator shown is only used as an example to illustrate the pre-circularization of the circular stator core according to the technical solution of the present invention, and does not mean that the fixture of this solution is only used for the operation of the circular stator structure.

[0039] While various embodiments of the present disclosure have been described above, the above descriptions are illustrative, non-exhaustive, and not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to existing technologies, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A stator core pre-circular jig, characterized in that: include: A cylindrical assembly disk having a hollow cylindrical inner wall, wherein the hollow cylindrical inner wall is provided with a plurality of first groove-shaped mounting positions along the axial direction of the hollow cylindrical inner wall and a plurality of second groove-shaped mounting positions along the axial direction of the hollow cylindrical inner wall, and the first groove-shaped mounting positions and the second groove-shaped mounting positions are arranged alternately, and the plurality of first groove-shaped mounting positions and the plurality of second groove-shaped mounting positions form a circle; a plurality of core positioning blocks, wherein the core positioning blocks are installed in the first groove-shaped installation position; a plurality of elastic iron core fixing blocks, each of which is installed in the second groove-shaped mounting position, wherein each elastic iron core fixing block comprises a groove-shaped mounting seat, an iron core fixing block, and a compression spring; the upper end of the iron core fixing block is hinged to the groove-shaped mounting seat, the compression spring is provided on the rear side of the lower end of the iron core fixing block to abut against the groove-shaped mounting seat, and the front side of the lower end of the iron core fixing block is provided with an external protrusion; Among them, the core positioning block and the rear side wall of the groove-shaped mounting seat are provided with screw connection holes, and the first groove-shaped mounting position and the second groove-shaped mounting position corresponding to the side wall of the cylindrical assembly disk are provided with through holes. The core positioning block and the groove-shaped mounting seat are connected to the cylindrical assembly disk by screws. The core positioning block and the core fixing block form a cavity for placing the stator core to complete the pre-circular assembly. The pre-circularized stator core is abutted by the outer protrusion on the front side of the lower end of the core fixing block to prevent it from falling, thereby realizing the pre-circular assembly of the stator core.

2. The stator core pre-circular jig according to claim 1, characterized in that: It also includes a placement seat for placing the stator core pre-circularization jig, the placement seat including a placement plate, a chassis, and a support column. A circular through hole is provided in the placement plate, and the support columns include at least three. The support columns are vertically and evenly supported and connected between the placement plate and the chassis. A base mounting column is provided on the chassis, and the base mounting column passes through the circular through hole and is coaxial with the circular through hole. The aperture of the circular through hole is adapted to the outer diameter of the cylindrical assembly plate, and the base mounting column is provided with an inner diameter base adapted to the inner diameter of the stator core to be pre-circularized.

3. The stator core pre-circular jig according to claim 2, characterized in that: The outer wall of the cylindrical assembly plate is provided with a convex portion perpendicular to the outer wall. The lower end of the cylindrical assembly plate is inserted into the circular through hole, and the convex portion abuts against the upper side of the circular through hole.

4. The stator core pre-circular jig according to claim 3, characterized in that: The left and right sides of the convex edge of the cylindrical assembly disk are respectively provided with a centrally symmetrical left straight edge and a right straight edge, and the rear side of the convex edge of the cylindrical assembly disk is provided with a rear straight edge, and the rear straight edge is perpendicular to the left straight edge and the right straight edge. Anti-wear pads are provided on the left straight edge, the right straight edge and the rear straight edge, and a C-shaped groove is provided on the inner side of the anti-wear pad, which is buckled on the left straight edge, the right straight edge and the rear straight edge through the C-shaped groove and fixed by glue or screws.

5. The stator core pre-circular jig according to claim 1, characterized in that: The first groove-shaped mounting position is a plurality of evenly distributed convex strips with isosceles trapezoidal cross-sections that are CNC-machined on the inner wall of the cylindrical assembly disk. The inner side surfaces of the convex strips are radially toward the axis inside the cylindrical assembly disk. The inner side surfaces of the convex strips are all CNC-machined to form a first square groove. The first square groove and the convex strips constitute the first groove-shaped mounting position, and a second square groove is formed between adjacent convex strips. The second square groove is the second groove-shaped mounting position.

6. The stator core pre-circular jig according to claim 5, characterized in that: The core positioning block is in the shape of a strip-shaped square. The rear side of the core positioning block is embedded in the first square groove and fixed by screws. The front side of the strip-shaped square is provided with an arc-shaped convex portion in the center along the length direction. The arc-shaped convex portion is used to adapt and position the arc-shaped groove on the outer wall of the stator core to be pre-rounded.

7. The stator core pre-circular jig according to claim 1, characterized in that: The core fixing block is in the shape of a strip-shaped square block, and the outer protrusion on the front side of the lower end of the core fixing block is two "teardrop-shaped" protrusions that gradually protrude downward along the two sides of the front side of the core fixing block. The "teardrop-shaped" protrusions on the front side of the lower end of all the core fixing blocks form a circular elastic clamping part for clamping and fixing the stator core to be pre-assembled into a circle.

8. The stator core pre-circularization jig according to any one of claims 1 to 7, characterized in that: A retaining ring is provided at the upper end of the cylindrical assembly disk and the outer position of the core positioning block and the core fixing block. Space is reserved between the inner side of the retaining ring and the upper end of the core fixing block for the core fixing block to realize arc movement of the upper end of the core fixing block through the elasticity of the compression spring.

9. The stator core pre-circularization jig according to any one of claims 1 to 7, characterized in that: A pair of handle bars are provided at symmetrical positions on the outer wall of the cylindrical assembly tray, and the cylindrical assembly tray is lifted by the handle bars.

10. The stator core pre-circular jig according to claim 2, characterized in that: A plurality of rollers arranged evenly are provided at the bottom of the chassis, and the rollers facilitate the movement of the placement seat and the stator core pre-circular jig.

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