A concentrated winding block type motor stator core assembly welding tool

Abstract

The present invention discloses a concentrated winding block type motor stator core assembly welding tool, comprising a forming hoop, a core inner circle positioning core rod and a block stator core, the forming hoop is provided with a positioning boss, the side of the forming hoop is provided with a core welding groove, the side of the forming hoop is provided with two sets of locking plates, the block stator core is provided with a block stator core self-fastening groove, the core inner circle positioning core rod is provided with an end winding placement groove, the core inner circle positioning core rod is provided with a first core outer diameter control flange, and the core inner circle positioning core rod is provided with a hoop end positioning platform. The present invention can lock the stator core without the need for press-fitting equipment and tooling, greatly improving efficiency, and there is no risk of bumping or insulation damage to the winding on the core, ensuring the core assembly welding quality, and greatly improving the stator core welding yield.

Description

Technical Field

[0001] The invention belongs to the technical field of stator core assembly welding, and in particular relates to a concentrated winding block-type motor stator core assembly welding tool. Background Art

[0002] During the design and development process of the motor, the assembly and welding of the stator core in the motor is a very important link. Assembly and welding tooling is required during assembly and welding. The existing assembly and welding tooling uses an outer cylindrical fixing sleeve, an assembly sleeve and a disassembly and ejection sleeve in combination. The outer cylindrical fixing sleeve and the assembly sleeve are used to fix the wound segmented stator core. After the stator core is initially formed by the forming tooling, it is pressed into the outer cylindrical fixing sleeve at an angle through the outer cylindrical fixing sleeve, the stator core is fixed with fixing screws, the stator core is welded through the welding groove, and finally the stator core formed by welding is ejected by disassembling the ejection sleeve. However, before the segmented stator core is welded into a whole circular stator, the stator winding coil is wound on the segmented stator core, and there are many lead wires. It is easy to damage the stator winding insulation during press-fitting, and the press-fitting efficiency is very low; the inner diameter size of the outer circle fixing sleeve is difficult to guarantee, and the concentricity and ovality of the inner and outer diameters of the whole circular stator core after press-fitting are difficult to guarantee, and the inner and outer circle size requirements are difficult to guarantee, which has a great impact on the performance of the motor and the quality of the product is difficult to guarantee; when the welded stator core is ejected with a ejection sleeve, it is easy to cause the stator core to twist, and the verticality of the core is difficult to meet the requirements. At the same time, the winding insulation is easily damaged during ejection, and the product yield is not high. Summary of the invention

[0003] The purpose of the present invention is to provide a concentrated winding block-type motor stator core assembly welding tool, which can lock the stator core without the need for pressing equipment and tooling, thereby greatly improving efficiency and eliminating the risk of bumping or insulation damage to the windings on the core, thereby ensuring the quality of core assembly welding and greatly improving the yield of stator core welding, thereby solving the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A concentrated winding block type motor stator core assembly welding tool comprises a forming hoop, a core inner circle positioning core rod and a block stator core, the forming hoop is provided with a positioning boss, the side of the forming hoop is provided with a core welding groove, the side of the forming hoop is provided with two sets of locking plates, and the two sets of locking plates are fixedly connected by bolts, the block stator core is provided with a block stator core self-fastening groove, the block stator core is provided with a stator core positioning groove, the weld positioning boss is clamped and fixed with the stator core positioning groove, and two opposite sides of the block stator core are respectively provided with An iron core assembly positioning groove and an iron core assembly positioning protrusion are provided, an end winding placement groove is opened on the iron core inner circle positioning core rod, a first iron core outer diameter control flange is provided on the iron core inner circle positioning core rod, a clamp end positioning platform is provided on the iron core inner circle positioning core rod, an iron core axial positioning protrusion is provided on the iron core inner circle positioning core rod, a divided iron core sorting cylinder is provided on the iron core inner circle positioning core rod, the forming clamp is fixedly clamped on the clamp end positioning platform by a locking plate and bolts, and the side wall of the first iron core outer diameter control flange is in conflict with the inner wall of the forming clamp.

[0006] Preferably, the upper surface of the positioning platform at the end of the clamp is set as a horizontal plane.

[0007] Preferably, the segmented stator cores are arranged around the segmented core arranging cylinder on the core axial positioning boss, and two adjacent groups of segmented stator cores are clamped and fixed by means of the core assembly positioning groove and the core assembly positioning boss.

[0008] Preferably, the formed clamp is fixed with an upper end ring for controlling the outer diameter of the core by means of a locking plate and bolts.

[0009] Preferably, the core welding grooves are provided in no less than six groups and are arranged equidistantly on the side wall of the forming hoop.

[0010] Preferably, the core outer diameter control upper end ring is provided with a second core outer diameter control flange, and the side wall of the second core outer diameter control flange is in conflict with the inner wall of the forming hoop.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. Through the forming clamp, the locking plate is locked with bolts, and no pressing equipment and tooling are required, which greatly improves the assembly efficiency. In addition, through the use of the end winding placement groove, the winding on the stator core will not be bumped during the locking process, avoiding the risk of insulation damage;

[0013] 2. By using the core outer diameter control upper end ring and the core inner circle positioning mandrel, the first core outer diameter control flange and the second core outer diameter control flange can limit the locking inner diameter of the forming hoop, effectively controlling the outer diameter of the stator core, and the locking force of the forming hoop can be controlled by the bolt locking torque, ensuring the quality of the stator core forming;

[0014] 3. By using bolts, the formed clamp can be removed simply and conveniently. The inner circle positioning mandrel of the core is matched with the inner circle of the stator core through the clearance. The inner circle positioning mandrel of the core can be gently tapped to remove the formed stator core, which greatly improves the work efficiency and greatly reduces the damage rate of the stator core. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a cross-sectional schematic diagram of a formed clamp of the present invention;

[0017] Figure 3 It is a schematic diagram of the structure of the block stator core of the present invention;

[0018] Figure 4 It is a partial cross-sectional schematic diagram of the formed clamp of the present invention.

[0019] In the figure: 1. forming clamp; 2. core inner circle positioning mandrel; 3. segmented stator core; 4. weld positioning boss; 5. core welding groove; 6. locking plate; 7. bolt; 8. segmented stator core self-fastening groove; 9. core assembly positioning groove; 10. core assembly positioning boss; 11. end winding placement groove; 12. first core outer diameter control flange; 13. clamp end positioning platform; 14. core axial positioning boss; 15. segmented core finishing cylinder; 16. core outer diameter control upper end ring; 17. second core outer diameter control flange; 18. stator core positioning groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-4 , the present invention provides a technical solution:

[0022] A concentrated winding block type motor stator core assembly welding tool, comprising a forming hoop 1, a core inner circle positioning core rod 2 and a block stator core 3, a forming hoop 1 is provided with a weld positioning boss 4, the weld positioning boss 4, the forming hoop 1 and the locking plate 6 are an integrated structure, the weld positioning boss 4 can locate the position of the stator core in the circumferential direction, ensure that the core welding groove 5 is aligned with the stator core weld position, and facilitate the welding of the assembled block stator core 3, the side of the forming hoop 1 is provided with a core welding groove 5, the core welding groove 5 is provided with no less than six groups, and is equidistantly arranged on the side wall of the forming hoop 1, the core welding groove 5 is provided with a plurality of core welding grooves 5, and is equidistantly arranged on the side wall of the forming hoop 1, and the core welding groove 5 is provided with a plurality of core welding grooves 5. When connecting, the outer circle of the stator core can be welded through the core welding groove 5. Two sets of locking plates 6 are arranged on the side of the forming hoop 1, and the two sets of locking plates 6 are fixedly connected by bolts 7. The segmented stator core 3 is provided with a segmented stator core self-fastening groove 8, and the segmented stator core 3 is provided with a stator core positioning groove 18. The weld positioning boss 4 is fixedly connected with the stator core positioning groove 18, which can locate the position of the stator core in the circumferential direction, ensure that the core welding groove 5 is aligned with the stator core weld position, and facilitate the welding of the assembled segmented stator core 3. The two opposite sides of the segmented stator core 3 are respectively provided with a core assembly positioning groove 9 and an iron core assembly positioning groove 18. The core assembly positioning protrusion 10, the block stator core 3, the core assembly positioning groove 9 and the core assembly positioning protrusion 10 are an integrated structure, the core inner circle positioning core rod 2 is provided with an end winding placement groove 11, the end winding placement groove 11 is used to place the stator winding coil, and the insulation outer layer of the winding coil can be protected, the core inner circle positioning core rod 2 is provided with a first core outer diameter control flange 12, the first core outer diameter control flange 12 is used to control the outer diameter size of the entire stator core after forming, the core inner circle positioning core rod 2 is provided with a clamp end positioning platform 13, and the core inner circle positioning core rod 2 is provided with a core An axial positioning boss 14 and a segmented core arranging cylinder 15 are arranged on the core inner circle positioning core rod 2. The segmented core arranging cylinder 15 is used to arrange the segmented stator core 3 in a ring shape around the outer diameter of the segmented core arranging cylinder 15 on the core inner circle positioning core rod 2. The forming hoop 1 is fixedly clamped on the hoop end positioning platform 13 through the locking plate 6 and the bolt 7, and the side wall of the first core outer diameter control flange 12 is in conflict with the inner wall of the forming hoop 1. The first core outer diameter control flange 12, the hoop end positioning platform 13, the core axial positioning boss 14, the segmented core arranging cylinder 15 and the core inner circle positioning core rod 2 are an integrated structure.

[0023] The upper surface of the positioning platform 13 at the end of the clamp is set as a horizontal plane, which can ensure that the outer diameter of the entire circular stator core will not be skewed.

[0024] The segmented stator cores 3 are arranged around the segmented core arranging cylinder 15 on the core axial positioning boss 14 , and two adjacent groups of segmented stator cores 3 are clamped and fixed by the core assembly positioning grooves 9 and the core assembly positioning protrusions 10 .

[0025] The forming hoop 1 is fixed with an upper end ring 16 for controlling the outer diameter of the core by means of a locking plate 6 and bolts 7. The upper end ring 16 for controlling the outer diameter of the core is provided with a second outer diameter control flange 17. The second outer diameter control flange 17 and the upper end ring 16 for controlling the outer diameter of the core are an integrated structure. The second outer diameter control flange 17 controls the outer diameter size of the entire circular stator core after forming. The side wall of the second outer diameter control flange 17 conflicts with the inner wall of the forming hoop 1.

[0026] Structural principle: through the forming hoop 1, the locking plate 6 is locked by the bolt 7, and no pressing equipment and tooling are required, which greatly improves the assembly efficiency. Moreover, through the use of the end winding placement groove 11, the winding on the stator core will not be bumped during the locking process, avoiding the risk of insulation damage. Through the use of the core outer diameter control upper end ring 16 and the core inner circle positioning core rod 2, the first core outer diameter control flange 12 and the second core outer diameter control flange 17 can limit the locking inner diameter of the forming hoop 1, effectively controlling the outer diameter size of the stator core, and the locking force of the forming hoop 1 can be controlled by the locking torque of the bolt 7, ensuring the quality of the stator core forming. Through the use of the bolt 7, the forming hoop 1 can be simply and conveniently removed, and the core inner circle positioning core rod 2 is clearance-matched with the inner circle of the stator core, and the formed stator core can be removed by gently tapping the core inner circle positioning core rod 2, which improves work efficiency and greatly reduces the damage rate of the stator core.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concentrated winding block type motor stator core assembly welding tool, comprising a forming clamp (1), a core inner circle positioning mandrel (2) and a block stator core (3), characterized in that: The forming hoop (1) is provided with a weld positioning boss (4), the side of the forming hoop (1) is provided with an iron core welding groove (5), the side of the forming hoop (1) is provided with two sets of locking plates (6), and the two sets of locking plates (6) are fixedly connected by bolts (7), the segmented stator core (3) is provided with a segmented stator core self-fastening groove (8), the segmented stator core (3) is provided with a stator core positioning groove (18), the weld positioning boss (4) is fixedly connected with the stator core positioning groove (18), the two opposite sides of the segmented stator core (3) are respectively provided with an iron core assembly positioning groove (9) and an iron core assembly positioning protrusion (10), the iron core assembly positioning protrusion (11) is fixedly connected with the stator core positioning groove (18 ... stator core assembly positioning protrusion (11) is fixedly connected with the stator core positioning groove ( The core inner circle positioning mandrel (2) is provided with an end winding placement groove (11), the core inner circle positioning mandrel (2) is provided with a first core outer diameter control flange (12), the core inner circle positioning mandrel (2) is provided with a clamp end positioning platform (13), the core inner circle positioning mandrel (2) is provided with a core axial positioning boss (14), the core inner circle positioning mandrel (2) is provided with a block core sorting cylinder (15), the forming clamp (1) is fixedly clamped on the clamp end positioning platform (13) by a locking plate (6) and a bolt (7), and the side wall of the first core outer diameter control flange (12) is in conflict with the inner wall of the forming clamp (1); The upper surface of the positioning platform (13) at the end of the clamp is set as a horizontal plane; the segmented stator cores (3) are arranged around the segmented core arranging cylinder (15) on the core axial positioning boss (14), and two adjacent groups of segmented stator cores (3) are clamped and fixed by means of a core assembly positioning groove (9) and a core assembly positioning convex block (10); the molded clamp (1) is clamped and fixed with an upper end ring (16) for controlling the outer diameter of the core by means of a locking plate (6) and a bolt (7).

2. The assembly welding tool for the stator core of a block-type motor with concentrated winding according to claim 1 is characterized in that: The iron core welding grooves (5) are provided in no less than six groups and are arranged at equal intervals on the side wall of the forming hoop (1).

3. The assembly welding tool for the stator core of a block-type motor with concentrated winding according to claim 1 is characterized in that: The core outer diameter control upper end ring (16) is provided with a second core outer diameter control flange (17), and the side wall of the second core outer diameter control flange (17) is in conflict with the inner wall of the forming hoop (1).

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