Stator core press-fitting die tool

Abstract

The invention discloses a stator core press-fitting die tool, which comprises an outer ring pressing tire (1), a stator core (2), an inner ring pressing tire (3) and an iron core pressing ring (4), and is characterized in that the stator core comprises limiting bosses (21) and welding parts (22), a plurality of limiting bosses are uniformly distributed along the circumferential direction, and a plurality of welding parts are uniformly distributed along the circumferential direction; the motor is characterized in that the stator iron core is installed between the outer ring pressing tire and the inner ring pressing tire, and the upper end face of the stator iron core is connected with an iron core pressing ring in an abutting mode; the outer ring pressing tire comprises a limiting boss positioning groove (11) and a welding window (12); the inner ring pressing tire comprises a first flange (31), a welding space (32) and a key groove (33); a second welding space (41) is arranged on the end face of one end of the iron core pressing ring. The device is convenient to mount and dismount, simple in structure, simple to process and manufacture, and reliable in press mounting and fixing; and the height position of the welding window can be adjusted so as to adapt to welding of stator iron cores with various axial height sizes.

Description

Technical Field

[0001] The invention relates to the technical field of production and manufacturing tooling for motors, and in particular to a stator core press-fitting die tooling. Background Art

[0002] In the production and manufacturing of motors, the stator core of the motor needs to be manufactured by stacking with tooling dies. Different tooling dies are needed for drop-pressing manufacturing for different stator cores. The tooling dies are specific. The tooling dies used for stacking the stator core of traditional motors are usually positioned on one side, either with the inner ring or the outer ring. For cores with inclined slots, slot positioning is used as an auxiliary method.

[0003] The existing stator core generally does not specifically limit the circumferential rotation, but relies on the tight fit between the core outer ring and the base inner ring to limit it. However, for high-magnetic permanent magnet motors, the stator core needs to be limited in circumferential rotation, otherwise, the high-speed rotation of the rotor will drive the stator to rotate, causing operating accidents. For the core with a boss on the outside of the stator core punching sheet for limiting and a welding position on the outer ring, a separate press-fitting die tooling needs to be designed. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a stator core press-fitting die tooling, which is easy to install and disassemble, has a simple structure, is simple to process and manufacture, and has reliable press-fitting and fixing; and can adjust the height position of the welding window to adapt to the welding of stator cores with various axial height sizes.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A stator core pressing die tooling, comprising an outer ring pressing tire (1), a stator core (2), an inner ring pressing tire (3), and a core pressing ring (4), wherein the stator core comprises a limiting boss (21) and a welding portion (22), wherein a plurality of limiting bosses are evenly distributed along the circumferential direction, and a plurality of welding portions are evenly distributed along the circumferential direction; the characteristic is that the stator core is installed between the outer ring pressing tire and the inner ring pressing tire, and the upper end surface of the stator core is pressed and connected with the core pressing ring; the outer ring pressing tire comprises a limiting boss positioning groove (11) and a welding window (12), wherein a plurality of limiting boss positioning grooves are arranged on the inner circumferential surface of the outer ring pressing tire and are evenly distributed along the circumferential direction, and the limiting boss positioning grooves correspond to and match the limiting bosses, and a plurality of welding windows penetrate through the limiting boss positioning grooves. The inner and outer surfaces of the outer ring pressing tire are evenly distributed along the circumferential direction, and the welding window corresponds to the position of the welding part; the inner ring pressing tire includes a first flange (31), a welding space (32), and a keyway (33); one end of the inner ring pressing tire is provided with a first flange, and the first flange is provided with a first welding space and a keyway; a plurality of first welding spaces are evenly distributed along the circumferential direction, and the first welding spaces correspond to the position of the welding part; a plurality of keyways are evenly distributed along the circumferential direction, and the keyways correspond to the positioning grooves of the limiting bosses and are positioned by keys; a second welding space (41) is provided on the end surface of one end of the core pressing ring; a plurality of second welding spaces are evenly distributed along the circumferential direction, and the second welding spaces correspond to the position of the welding part.

[0007] Furthermore, the upper end surface of the stator core (2) abuts against the lower end surface of the core pressing ring, and the lower end surface of the stator core abuts against the upper end surface of the first flange, and the axial height of the first flange is higher than the bottom window edge of the welding window (12) of the outer ring pressing tire on the outer periphery of the stator core; the size of the welding window is larger than the height of the stator core so that the welding groove of the stator core is completely exposed without affecting the welding of the stator core.

[0008] Furthermore, the core pressing ring (4) is gap-matched with the outer ring pressing tire and the inner ring pressing tire, and a second welding space or welding groove (41) is provided at a position on the lower end surface of the core pressing ring that contacts the stator core.

[0009] Furthermore, the outer ring mold (1) and the inner ring mold are positioned by means of a positioning key, a keyway (33), and a limiting boss positioning groove (11); a small gap is formed between the outer circumferential surface of the inner ring mold and the inner circumferential surface of the stator core, and is used for positioning the inner circle of the stator core; a limiting boss positioning groove (11) is provided on the inner circumferential surface of the outer ring mold, and is used for positioning the limiting boss (21) on the outer circumferential surface of the stator core; a relatively large gap is left between the inner circumferential surface of the outer ring mold and the outer circumferential surface of the stator core; after the stator core is installed in position, it is pressed tightly with a core pressing ring.

[0010] Furthermore, a welding window is provided on the outer peripheral side of the outer ring pressing tire (1). After the stator core is pressed, the stator core is welded through the welding window of the outer ring pressing tire on the outer periphery of the stator core; a first welding space (32) is provided on the outer peripheral surface of the first flange (31) of the inner ring pressing tire at a position in contact with one end of the stator core, and a second welding space (41) is provided on the bottom end surface of one end of the core pressing ring (4) at a position in contact with the other end of the stator core for welding, so as to avoid welding the mold and the stator core together during welding.

[0011] Furthermore, the inner ring mold (3) also includes a second flange (34), which is arranged on the outer peripheral surface of the first flange (31), and one or more adjustment plates / adjustment rings (35) are arranged between the lower end surface of the outer ring mold and the second flange. The axial height of the second flange is less than the axial height of the first flange. The adjustment plates / adjustment rings are used to adjust the axial height position of the welding window (12) to adapt to the welding of stator cores with various axial height sizes.

[0012] The stator core press-fitting die tooling of the present invention is convenient to install and disassemble, has a simple structure, is simple to manufacture, and is reliable to press-fit and fix; and can adjust the height position of the welding window to adapt to the welding of stator cores with various axial height sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the stator core structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the structure of the stator core press-fitting die tooling of the present invention;

[0015] Figure 3 This is a schematic diagram of the outer ring tire pressing structure of the present invention;

[0016] Figure 4 This is a schematic diagram of the inner ring tire structure of the present invention;

[0017] Figure 5 It is a schematic diagram of the structure of the iron core pressing ring of the present invention;

[0018] Figure 6 It is a structural schematic diagram of another embodiment of the stator core press-fitting die tooling of the present invention.

[0019] In the figure: outer ring pressing tire 1, stator core 2, inner ring pressing tire 3, core pressing ring 4, limiting boss positioning groove 11, welding window 12, limiting boss 21, welding part / welding position 22, first flange 31, first welding space / welding groove 32, keyway 33, second flange 34, adjustment sheet / ring 35, second welding space / welding groove 41. DETAILED DESCRIPTION

[0020] In order to make the technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described in detail in detail with reference to the accompanying drawings. It can be understood that the specific embodiments described here are only partial embodiments of the present invention, which are only used to explain the present invention, not to limit the present invention. It should be noted that, for the convenience of description, only the parts / structures related to the present invention are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0021] 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. In addition, unless otherwise defined, the technical terms or scientific terms used in the description of the present invention should be the common meanings understood by ordinary technicians in the field to which the present invention belongs.

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1-5 As shown, a stator core pressing mold tooling comprises an outer ring pressing tire 1, a stator core 2, an inner ring pressing tire 3, and a core pressing ring 4. The stator core 2 comprises a limiting boss 21 and a welding part / welding position 22. A plurality of limiting bosses 21 are evenly distributed along the circumferential direction, and a plurality of welding parts 22 are evenly distributed along the circumferential direction. It is characterized in that: the stator core 2 is installed between the outer ring pressing tire 1 and the inner ring pressing tire 3, and the upper end surface of the stator core 2 is pressed and connected with the core pressing ring 4; the outer ring pressing tire 1 comprises a limiting boss positioning groove 11 and a welding window 12. A plurality of limiting boss positioning grooves 11 are arranged on the inner circumferential surface of the outer ring pressing tire 1 and are evenly distributed along the circumferential direction, and the limiting boss positioning grooves 11 correspond to and match the limiting bosses 21, and a plurality of welding windows 12 penetrate through the inner circumference of the outer ring pressing tire 1, The outer surface is evenly distributed along the circumference, and the welding window 12 corresponds to the position of the welding part 22; the inner ring pressing tire 3 includes a first flange 31, a welding space 32, and a key groove 33. A first flange 31 is arranged at one end of the inner ring pressing tire 3, and a first welding space 32 and a key groove 33 are arranged on the first flange 31. Multiple first welding spaces 32 are evenly distributed along the circumference, and the first welding spaces 32 correspond to the position of the welding part 22. Multiple key grooves 33 are evenly distributed along the circumference, and the key grooves 33 correspond to the positioning grooves 11 of the limiting boss and are positioned by keys; a second welding space 41 is arranged on the end face of one end of the core pressing ring 4, and multiple second welding spaces 41 are evenly distributed along the circumference, and the second welding spaces 41 correspond to the position of the welding part 22.

[0024] The upper end surface of the stator core 2 abuts against the lower end surface of the core pressing ring 4, and the lower end surface of the stator core 2 abuts against the upper end surface of the first flange 31. The axial height of the first flange 31 is higher than the bottom window edge of the welding window 12 of the outer ring pressing tire 1 on the outer periphery of the stator core 2.

[0025] The size / space of the welding window 12 is larger than the height of the stator core 2 so as to expose all the welding slots of the stator core without affecting the welding of the stator core.

[0026] The core pressing ring 4 is gap-matched with the outer ring pressing tire 1 and the inner ring pressing tire 3 , and a second welding space / welding groove 41 is provided at a position of the lower end surface of the core pressing ring 4 that contacts the stator core 2 .

[0027] The outer ring tyre 1 and the inner ring tyre 3 are positioned by means of a positioning key (flat key), a keyway 33 and a limiting boss positioning groove 11. A small gap is formed between the outer cylindrical surface of the inner ring tyre 3 and the inner cylindrical surface of the stator core 2 to position the inner circle of the stator core 2. A limiting boss positioning groove 11 is provided on the inner cylindrical surface of the outer ring tyre 1 to position the limiting boss 21 on the outer cylindrical surface of the stator core 2. A large gap is left between the inner cylindrical surface of the outer ring tyre 1 and the outer cylindrical surface of the stator core 2. After the stator core 2 is installed in position, it is tightened with a core pressing ring 4.

[0028] A welding window 12 is provided on the outer peripheral side of the outer ring pressing tire 1. After the stator core 2 is pressed, the stator core 2 is welded through the welding window 12 of the outer ring pressing tire 1 on the outer periphery of the stator core 2; a first welding space 32 (the contact position with both ends of the stator core 2) is provided on the outer peripheral surface of the first flange 31 of the inner ring pressing tire 3, and a second welding space 41 (the contact position with both ends of the stator core 2) is provided on the bottom end surface of one end of the core pressing ring 4 for welding to avoid welding the mold and the stator core together during welding. After welding is completed, the pressure is removed and the tooling mold is removed.

[0029] like Figure 6 As shown, in another embodiment, the inner ring mold 3 also includes a second flange 34, and the second flange 34 is arranged on the outer peripheral surface of the first flange 31. One or more adjustment plates / rings 35 are arranged between the lower end surface of the outer ring mold 1 and the second flange 34. The axial height of the second flange 34 is less than the axial height of the first flange 31. The adjustment plates / rings 35 are used to adjust the height position of the welding window 12 (installing different numbers of adjustment plates / rings 35) to adapt to the welding of stator cores 2 with various axial height sizes.

[0030] The stator core press-fitting die tooling of the present invention is convenient to install and disassemble, has a simple structure, is simple to manufacture, and is reliable to press-fit and fix; and can adjust the height position of the welding window to adapt to the welding of stator cores with various axial height sizes.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The "connection" mentioned above can be a direct connection or an indirect connection, and the "setting", "setting at" and "setting at" can be directly set at or indirectly set at.

[0032] The above-mentioned implementation modes are for explanation of the present invention rather than limitation of the present invention. It can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A stator core pressing die tooling, comprising an outer ring pressing tire (1), a stator core (2), an inner ring pressing tire (3), and a core pressing ring (4), wherein the stator core comprises a limiting boss (21) and a welding portion (22), wherein a plurality of limiting bosses are evenly distributed along the circumferential direction, and a plurality of welding portions are evenly distributed along the circumferential direction; characterized in that: The stator core is installed between the outer ring mold and the inner ring mold, and the upper end surface of the stator core is pressed and connected with the core ring; the outer ring mold comprises a limiting boss positioning groove (11) and a welding window (12), a plurality of limiting boss positioning grooves are arranged on the inner circumferential surface of the outer ring mold and are evenly distributed along the circumferential direction, and the limiting boss positioning grooves correspond to the limiting bosses, a plurality of welding windows penetrate the inner and outer surfaces of the outer ring mold and are evenly distributed along the circumferential direction, and the welding windows correspond to the positions of the welding parts; the inner ring mold comprises a first flange (31), a welding space (32), keyway (33), a first flange is arranged at one end of the inner ring pressure tire, a first welding space and a keyway are arranged on the first flange, a plurality of first welding spaces are evenly distributed along the circumference, and the first welding space corresponds to the position of the welding part, a plurality of keyways are evenly distributed along the circumference, and the keyways correspond to the positioning grooves of the limiting boss and are positioned by keys; a second welding space (41) is arranged on the end face of one end of the core pressure ring, a plurality of second welding spaces are evenly distributed along the circumference, and the second welding space corresponds to the position of the welding part.

2. A stator core press-fitting die tooling as claimed in claim 1, characterized in that: The upper end surface of the stator core (2) abuts against the lower end surface of the core pressing ring, and the lower end surface of the stator core abuts against the upper end surface of the first flange. The axial height of the first flange is higher than the bottom window edge of the welding window (12) of the outer ring pressing tire on the outer periphery of the stator core. The size of the welding window is larger than the height of the stator core so that the welding groove of the stator core is completely exposed without affecting the welding of the stator core.

3. A stator core press-fitting die tooling as claimed in claim 2, characterized in that: The core pressing ring (4) is clearance-matched with the outer ring pressing tire and the inner ring pressing tire, and a second welding space or welding groove (41) is provided at the position of the lower end surface of the core pressing ring in contact with the stator core.

4. A stator core press-fitting die tooling as claimed in claim 3, characterized in that: The outer ring mold (1) and the inner ring mold are positioned by means of a positioning key, a key slot (33) and a limiting boss positioning slot (11); a small gap is formed between the outer circumference of the inner ring mold and the inner circumference of the stator core to position the inner circle of the stator core; a limiting boss positioning slot (11) is provided on the inner circumference of the outer ring mold to position the limiting boss (21) on the outer circumference of the stator core; a relatively large gap is left between the inner circumference of the outer ring mold and the outer circumference of the stator core; after the stator core is installed in position, it is pressed tightly by a core pressing ring.

5. A stator core press-fitting die tool as claimed in claim 4, characterized in that: The outer ring pressing tire (1) is provided with a welding window on its outer circumference. After the stator core is pressed, the stator core is welded through the welding window of the outer ring pressing tire on the outer circumference of the stator core. A first welding space (32) is provided on the outer circumference of the first flange (31) of the inner ring pressing tire at a position in contact with one end of the stator core. A second welding space (41) is provided on the bottom end surface of one end of the core pressing ring (4) at a position in contact with the other end of the stator core for welding, so as to avoid welding the mold and the stator core together during welding.

6. A stator core press-fitting die tooling as claimed in claim 2 or 5, characterized in that: The inner ring mold (3) further comprises a second flange (34), which is arranged on the outer peripheral surface of the first flange (31), and one or more adjustment plates / adjustment rings (35) are arranged between the lower end surface of the outer ring mold and the second flange, wherein the axial height of the second flange is smaller than the axial height of the first flange, and the adjustment plates / adjustment rings are used to adjust the axial height position of the welding window (12) so as to adapt to the welding of stator cores with various axial height sizes.

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