A device for twisting the end of a multi-layer flat wire of a motor stator

Abstract

The application discloses a motor stator multi-layer flat wire end portion head twisting device and belongs to the technical field of motor stators. The device comprises a fixing plate (1), a head twisting die (2) is arranged on the fixing plate (1), the head twisting die (2) comprises a cylindrical head twisting die (20), the upper end surface of the head twisting die (20) is provided with a flat wire insertion slot (21) in the circumferential direction, the head twisting die (20) is provided as 1-8, the head twisting dies (20) are sequentially nested in the radial direction, a tooth protection mechanism (5) is arranged above the head twisting die (2), a driving mechanism (3) and a lifting mechanism (4) are arranged below the fixing plate (1), the device can twist the heads of the flat wires in the flat wire insertion slots (21) at the same time, the wire twisting effect is good, the flat wire end portions can be prevented from being separated from the head twisting die during head twisting, and the product quality can be improved.

Description

Technical Field

[0001] This invention belongs to the field of motor stator technology, specifically relating to a multi-layer flat wire end twisting device for motor stators that enables flat wires to twist simultaneously and prevents the flat wire ends from detaching from the twisting mold during twisting. Background Technology

[0002] Chinese utility model patent application No. 202120695426.9, filed on April 6, 2021, discloses a universal flat wire hairpin motor stator automatic twisting machine, a twisting mold, and a twisting mold mechanism. The machine includes a worktable, on which a twisting mold mechanism, a workpiece positioning mechanism, and a workpiece follower mechanism are sequentially installed from left to right. The twisting mold mechanism includes a housing, within which several concentrically arranged twisting molds are axially connected, and each twisting mold is connected to a rotational power device. This invention is compatible with twisting processes where the twisting angles or directions of different layers of 2, 4, 6, or more flat wires are inconsistent. It can complete various multi-layer flat wire twisting functions in the same twisting machine, achieving high-quality requirements while simultaneously achieving one-time twisting to the correct position. Furthermore, the twisting direction of each layer of flat wire can be adjusted as needed, and a flat wire protection structure is provided to effectively prevent damage to the wire outlet during twisting.

[0003] However, in the aforementioned general-purpose flat wire hairpin motor stator automatic twisting machine, twisting mold, and twisting mold mechanism, when the flat wire is twisted by the twisting mold, the longitudinal length of the flat wire becomes shorter, making it easy to detach from the twisting mold, thus affecting the twisting of the flat wire. Summary of the Invention

[0004] The purpose of this invention is to overcome the technical problem that flat wires are prone to detach from the twisting mold during twisting in the prior art, and to provide a multi-layer flat wire end twisting device for motor stators that can prevent the flat wire end from detaching from the twisting mold during twisting, thereby improving product quality.

[0005] To solve the above-mentioned technical problems, the present invention provides a multi-layer flat wire end twisting device for motor stators, including a fixing plate, on which a twisting mold is provided. The twisting mold includes a cylindrical twisting die, and a flat wire slot is provided circumferentially on the upper end surface of the twisting die. There are 1 to 8 twisting dies, which are nested together radially. A tooth protection mechanism for fixing the workpiece is provided above the twisting die. A driving mechanism for driving the twisting die to rotate and a lifting mechanism for driving the twisting die to rise and fall are provided below the fixing plate. The driving mechanism includes a support plate, on which a turntable and a driving component for driving the turntable to rotate are provided. There are 1 to 8 sets of driving mechanisms corresponding to the twisting dies. The flat wire end is inserted into the flat wire slot, and the driving mechanism drives the twisting die to rotate, so that the flat wire end completes the twisting.

[0006] As a further improvement of the present invention, in the above-mentioned multi-layer flat wire end twisting device for motor stator, the support plates are arranged in a corresponding manner of 1-8, the support plates are arranged sequentially below the fixed plate, the driving components are arranged in a corresponding manner of 1-8, and the turntable is arranged in a corresponding manner of 1-8, so that the multi-groove flat wires can be twisted simultaneously.

[0007] As a further improvement of the present invention, in the above-mentioned multi-layer flat wire end twisting device for motor stator, a rotating shaft is provided between the turntable and the twisting mold. One to eight rotating shafts are provided corresponding to the twisting molds. The rotating shafts are nested in a radial direction and are used to connect the turntable and the twisting mold, thereby playing a transmission role.

[0008] As a further improvement of the present invention, the above-mentioned multi-layer flat wire end twisting device for motor stator includes a lifting mechanism comprising a lifting cam mounted on a support plate. The inclined arc surface of the lifting cam is arranged along the circumference of the turntable. A lifting follower wheel is provided on the side wall of the turntable. The lifting follower wheel is mounted on the lifting cam. The lifting mechanism and the drive mechanism are provided with 1-8 sets of corresponding lifting mechanisms. When the drive mechanism drives the twisting mold to rotate, the turntable can rise or fall through the lifting mechanism, thereby causing the twisting mold to rise or fall. This prevents the flat wire from detaching from the flat wire slot during flat wire twisting.

[0009] As a further improvement of the present invention, in the above-mentioned multi-layer flat wire end twisting device for motor stator, 1-8 lifting cams are provided, and 1-8 lifting follower wheels are provided.

[0010] As a further improvement of the present invention, in the above-mentioned multi-layer flat wire end twisting device for motor stator, the inclination of the lifting cam increases sequentially from bottom to top.

[0011] As a further improvement of the present invention, in the above-mentioned multi-layer flat wire end twisting device for motor stator, the tilting directions of the lifting cams in the adjacent lifting mechanisms are opposite.

[0012] As a further improvement of the present invention, in the above-mentioned multi-layer flat wire end twisting device for motor stator, 1-8 limiting cams are correspondingly arranged above the lifting cam, and the lifting follower wheel is arranged between the lifting cam and the limiting cam.

[0013] As a further improvement of the present invention, the above-mentioned multi-layer flat wire end twisting device for motor stator includes a tooth protection mechanism comprising a base, on which a wedge plate and a driving component nine for driving the wedge plate to rotate are provided. The wedge plate is uniformly provided with wedge grooves, and a tooth protection plate is provided above the wedge plate. Sliding grooves are uniformly provided above the wedge grooves on the tooth protection plate. The wedge grooves and sliding grooves are intersected. A tooth protection paddle is provided on the sliding groove, and a wedge block is provided on the tooth protection paddle. The wedge block is provided on the wedge groove. When the wedge plate rotates, it drives the wedge block to move, thereby allowing the tooth protection paddle to extend or retract in the sliding groove.

[0014] As a further improvement of the present invention, in the above-mentioned motor stator multilayer flat wire end twisting device, the width of the inner end of the tooth protection plate is smaller than the width of the outer end, so that the tooth protection plate can be easily inserted into the adjacent flat wire.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting up a lifting mechanism, the present invention can raise the twisting mold while twisting the end of the flat wire, thereby preventing the end of the flat wire from coming off the twisting mold during twisting and bending. This solves the technical problem in the prior art that the flat wire is easy to come off the twisting mold during twisting. The present invention can also make the flat wire in the flat wire slot twist at the same time, resulting in a better twisting effect and improved product quality. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention.

[0017] Figure 2 This is a front view of the drive mechanism and lifting mechanism of the present invention.

[0018] Figure 3 yes Figure 1 Sectional view along the AA direction.

[0019] Figure 4 yes Figure 3 Enlarged view of section I in the middle.

[0020] Figure 5 yes Figure 3 Enlarged view of section H in the middle.

[0021] Figure 6 yes Figure 1 Sectional view along the BB direction.

[0022] Figure 7 This is a perspective view of the present invention.

[0023] Figure 8 This is a perspective view of the present invention omitting the tooth-protecting mechanism.

[0024] Figure 9 This is a top view of the toggle head mold of the present invention.

[0025] Figure 10 This is a perspective view of the toggle head mold of the present invention.

[0026] Figure 11 This is a perspective view of the tooth protection mechanism of the present invention.

[0027] Figure 12 This is a perspective view of the tooth protection mechanism of the present invention without the tooth protection paddle.

[0028] Figure 13 This is a perspective view of the tooth protection mechanism of the present invention, omitting the tooth protection paddle and tooth protection plate.

[0029] Figure 14 This is a bottom view of the tooth-protecting paddle of the present invention without the base.

[0030] Explanation of reference numerals in the attached diagram: 1 - Fixing plate;

[0031] 2-Twisting head mold, 20-Twisting head mold, 201-Twisting head mold one, 202-Twisting head mold two, 203-Twisting head mold three, 204-Twisting head mold four, 205-Twisting head mold five, 206-Twisting head mold six, 207-Twisting head mold seven, 208-Twisting head mold eight, 21-Flat wire slot;

[0032] 3-Drive mechanism, 30-Support plate, 301-Support plate one, 302-Support plate two, 303-Support plate three, 304-Support plate four, 305-Support plate five, 306-Support plate six, 307-Support plate seven, 308-Support plate eight, 31-Turntable, 311-Turntable one, 312-Turntable two, 313-Turntable three, 314-Turntable four, 315-Turntable five, 316-Turntable six, 317-Turntable seven, 318- Turntable 8, 32-Driver, 321-Driver 1, 322-Driver 2, 323-Driver 3, 324-Driver 4, 325-Driver 5, 326-Driver 6, 327-Driver 7, 328-Driver 8, 33-Rotating Shaft, 331-Rotating Shaft 1, 332-Rotating Shaft 2, 333-Rotating Shaft 3, 334-Rotating Shaft 4, 335-Rotating Shaft 5, 336-Rotating Shaft 6, 337-Rotating Shaft 7, 338-Rotating Shaft 8;

[0033] 4-Lifting mechanism, 40-Lifting cam, 401-Lifting cam one, 402-Lifting cam two, 403-Lifting cam three, 404-Lifting cam four, 405-Lifting cam five, 406-Lifting cam six, 407-Lifting cam seven, 408-Lifting cam eight, 41-Lifting follower wheel, 411-Lifting follower wheel one, 412-Lifting follower wheel two, 413-Lifting follower wheel three, 414-Lifting follower wheel four, 415-Lifting follower wheel five, 416-Lifting follower wheel six, 417-Lifting follower wheel seven, 418-Lifting follower wheel eight, 42-Limiting protrusion, 421-Limiting cam one, 422-Limiting cam two, 423-Limiting cam three, 424-Limiting cam four, 425-Limiting cam five, 426-Limiting cam six, 427-Limiting cam seven, 428-Limiting cam eight;

[0034] 5-Tooth protection mechanism, 501-Base, 502-Wedge plate, 503-Drive component nine, 504-Wedge groove, 505-Tooth protection plate, 506-Slide groove, 507-Tooth protection lever, 508-Wedge block. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] Conversely, this invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of the invention as defined in the claims. Furthermore, to provide a better understanding of the invention, certain specific details are described in detail below. However, those skilled in the art will fully understand the invention even without these detailed descriptions.

[0037] like Figure 1 , Figure 3 , Figure 4 , Figure 7 , Figure 9 and Figure 10The device shown is a multi-layer flat wire end twisting device for motor stator, including a fixing plate 1. A twisting mold 2 is provided on the fixing plate 1. The twisting mold 2 includes a cylindrical twisting mold 20. There are 8 twisting molds 20, which are nested in a radial direction. The twisting mold 2 is used to twist the end of the flat wire. The 8 twisting molds 20 are twisting mold one 201, twisting mold two 202, twisting mold three 203, twisting mold four 204, twisting mold five 205, twisting mold six 206, twisting mold seven 207 and twisting mold eight 208, so that the end of the flat wire with 8 slots can be twisted at the same time. The upper end faces of the twisting molds 201, 202, 203, 204, 205, 206, 207, and 208 are provided with flat wire slots 21 along the circumferential direction. The flat wire slots 21 on the twisting molds 201, 203, 205, and 207 are located on the outer side walls, while the flat wire slots 21 on the twisting molds 202, 204, 206, and 208 are located on the inner side walls. The flat wire slots 21 are used to place the ends of the flat wires to be twisted. When the twisting mold 2 rotates, the ends of the flat wires in the flat wire slots 21 can be twisted.

[0038] like Figure 1 , Figure 3 , Figure 7 , Figures 11 to 14 As shown, a tooth protection mechanism 5 is provided above the twisting mold 2. The tooth protection mechanism 5 includes a base 501, a wedge plate 502 and a driving component 503 for driving the wedge plate 502 to rotate on the base 501. The driving component 503 is a servo motor. The wedge plate 502 is uniformly provided with wedge grooves 504. A tooth protection plate 505 is provided above the wedge plate 502. The tooth protection plate 505 is uniformly provided with sliding grooves 506 above the wedge grooves 504. The wedge grooves 504 and sliding grooves 506 are intersected. A tooth protection paddle 507 is provided on the sliding groove 506. The tooth protection paddle 507 can slide on the sliding groove 506. The width of the inner end of the tooth protection paddle 507 is smaller than the width of the outer end, so that the tooth protection paddle can be inserted between the adjacent flat wires of the stator, so that the ends of the flat wires can be fixed during twisting. The tooth protection paddle 507 is provided with a wedge block 508, which is located on the wedge groove 504. The wedge block 508 can cooperate with the wedge groove 504 to extend or retract the tooth protection paddle 507.

[0039] When a stator is placed on the twisting mold 2, the flat wire end of the stator is inserted into the flat wire slot 21. The driving component 9 503 drives the inclined wedge plate 502 to rotate, and the inclined wedge groove 504 drives the inclined wedge block 508 to move. Since the inclined wedge block 508 is set on the tooth protection plate 507, it can drive the tooth protection plate 507 to move on the slide groove 506. Thus, when tooth protection is needed, the driving component 9 503 can drive the tooth protection plate 507 to extend. After the twisting of the flat wire end is completed, the driving component 9 503 can drive the tooth protection plate 507 to retract back to its original position.

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, a drive mechanism 3 for rotating the torsion head mold 2 is provided below the fixed plate 1. The drive mechanism 3 includes a support plate 30, on which a turntable 31 and a drive component 32 for rotating the turntable are provided. Eight sets of drive mechanisms 3 are provided corresponding to the torsion head mold 20, with eight support plates 30, eight drive components 32, and eight turntables 31. The eight support plates 30 are, in sequence, support plate eight 308, support plate seven 307, support plate six 306, support plate five 305, support plate four 304, support plate three 303, support plate two 302, and support plate one 301 below the fixed plate 1. Support plate eight 308 is provided with a turntable eight 318 and a drive component eight 328 for rotating the turntable eight 318. Support plate seven 308... 07 is equipped with a turntable 317 and a drive component 327 for rotating the turntable 317; 606 is equipped with a turntable 316 and a drive component 326 for rotating the turntable 316; 505 is equipped with a turntable 315 and a drive component 325 for rotating the turntable 315; 404 is equipped with a turntable 314 and a drive component 324 for rotating the turntable 314; 303 is equipped with a turntable 313 and a drive component 323 for rotating the turntable 313; 202 is equipped with a turntable 312 and a drive component 322 for rotating the turntable 312; 101 is equipped with a turntable 311 and a drive component 321 for rotating the turntable 311.

[0041] like Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 9 and Figure 10As shown, a rotating shaft 33 is provided between the turntable 31 and the torsion head mold 20. There are eight rotating shafts 33 corresponding to the torsion head mold 20, nested radially. These eight rotating shafts are designated as rotating shaft 1 331, rotating shaft 2 332, rotating shaft 333, rotating shaft 4 334, rotating shaft 5 335, rotating shaft 6 336, rotating shaft 7 337, and rotating shaft 8 338. Rotating shaft 1 331 is located between the torsion head mold 201 and the turntable 311, and rotating shaft 2 332 is located between the torsion head mold 202 and the turntable 311. Between turntable 2 and 312, turnshaft 3 and 333 are located between turn head mold 3 and 203 and turntable 3 and 313, turnshaft 4 and 334 are located between turn head mold 4 and 204 and turntable 4 and 314, turnshaft 5 and 335 are located between turn head mold 5 and 205 and turntable 5 and 315, turnshaft 6 and 336 are located between turn head mold 6 and 206 and turntable 6 and 316, turnshaft 7 and 337 are located between turn head mold 7 and 207 and turntable 7 and 317, and turnshaft 8 and 338 are located between turn head mold 8 and 208 and turntable 8 and 318. When drive components 1 (321), 2 (322), 3 (323), 4 (324), 5 (325), 6 (326), 7 (327), and 8 (328) drive turntables 1 (311), 2 (312), 3 (313), 4 (314), 5 (315), 6 (316), 7 (317), and 8 (318) to rotate independently, they can be driven by shaft 1 (331) and shaft 2 (328) to rotate independently. The transmissions of shaft 2 (332), shaft 3 (333), shaft 4 (334), shaft 5 (335), shaft 6 (336), shaft 7 (337), and shaft 8 (338) drive the independent rotation of the twisting head mold 1 (201), twisting head mold 2 (202), twisting head mold 3 (203), twisting head mold 4 (204), twisting head mold 5 (205), twisting head mold 6 (206), twisting head mold 7 (207), and twisting head mold 8 (208), enabling the end of the flat wire inserted into the flat wire slot 21 to complete the twisting.

[0042] like Figure 1 , Figure 2 , Figure 4 and Figure 7As shown, when the flat wire end is twisted, the vertical length of the flat wire becomes shorter after the flat wire end is bent. When the twisting mold 2 rotates, the bent flat wire end is easy to detach from the flat wire slot 21. Therefore, a lifting mechanism 4 for driving the twisting mold 2 to move longitudinally is provided below the fixing plate 1. The lifting mechanism 4 can raise the twisting mold 2 while the twisting mold 2 is rotating, which can prevent the flat wire end from detaching from the twisting mold 2. The lifting mechanism 4 and the drive mechanism 3 are provided with 8 sets of lifting mechanisms. The lifting mechanism 4 includes a lifting cam 40 provided on the support plate 30. The inclined arc surface of the lifting cam 40 is provided along the circumference of the turntable 31. The side wall of the turntable 31 is provided with a lifting follower wheel 41. The lifting follower wheel 41 is provided on the lifting cam 40. When the turntable 31 rotates, the lifting follower wheel 41 can roll on the lifting cam 40. When the lifting follower wheel 41 rolls from the low point to the high point on the lifting cam 40, the turntable 31 rises and drives the twisting head mold 2 to rise. When the lifting follower wheel 41 rolls from the high point to the low point on the lifting cam 40, the turntable 31 falls and drives the twisting head mold 2 to fall.

[0043] like Figures 1 to 3 , Figure 5 , Figure 6 , Figure 8 As shown, there are eight lifting cams 40. The eight lifting cams 40 are: lifting cam 1 401 on support plate 1 301, lifting cam 2 402 on support plate 2 302, lifting cam 3 403 on support plate 3 303, lifting cam 4 404 on support plate 4 304, lifting cam 5 405 on support plate 5 305, lifting cam 6 406 on support plate 6 306, lifting cam 7 407 on support plate 7 307, and lifting cam 8 408 on support plate 8 308. There are eight lifting follower wheels 41. The eight lifting follower wheels 41 are: lifting follower wheel 1 411 on turntable 1 311, lifting follower wheel 2 412 on turntable 2 312, lifting follower wheel 3 413 on turntable 3 313, lifting follower wheel 414 on turntable 4 314, lifting follower wheel 5 415 on turntable 5 315, lifting follower wheel 6 416 on turntable 6 316, lifting follower wheel 7 417 on turntable 7 317, and lifting follower wheel 8 418 on turntable 8 318. The lifting follower wheel 1 411, lifting follower wheel 2 412, lifting follower wheel 3 413, lifting follower wheel 414, lifting follower wheel 5 415, lifting follower wheel 6 416, lifting follower wheel 7 417 and lifting follower wheel 8 418 are respectively installed on the lifting cam 1 401, lifting cam 2 402, lifting cam 3 403, lifting cam 404, lifting cam 5 405, lifting cam 6 406, lifting cam 7 407 and lifting cam 8 408.

[0044] like Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown, in the initial position, lifting follower wheels 1 (411), 2 (412), 3 (413), 4 (414), 5 (415), 6 (416), 7 (417), and 8 (418) are respectively located at the lowest points of lifting cams 1 (401), 2 (402), 3 (403), 4 (404), 5 (405), 6 (406), 7 (407), and 8 (408). Thus, when turntables 1 (311), 2 (312), 3 (313), 4 (314), 5 (315), 6 (316), and 7 (318) are in their lowest positions... When turntable 7 and turntable 8 318 rotate, the eight twisting molds 20 rotate accordingly. The lifting follower wheels 1 411, 2 412, 3 413, 4 414, 5 415, 6 416, 7 417 and 8 418 roll and rise on the lifting cams 1 401, 2 402, 3 403, 4 404, 5 405, 6 406, 7 407 and 8 408 respectively, thereby driving the eight twisting molds 20 to rise, which can prevent the flat wire end from detaching from the twisting mold 2 when twisting.

[0045] like Figure 1 , Figure 2 , Figure 8 , Figure 9 , Figure 10As shown, when twisting the end of the flat wire, the rotation angles of turntables 1 (311), 2 (312), 3 (313), 4 (314), 5 (315), 6 (316), 7 (317), and 8 (318) are the same. However, since the diameters of twisting molds 1 (201), 2 (202), 3 (203), 4 (204), 5 (205), 6 (206), 7 (207), and 8 (208) increase sequentially, the twisting and bending length of the flat wire end on twisting mold 8 (208) is greater than that on twisting mold 201. If the height of twisting mold 8 (208) is insufficient, the flat wire end is prone to detach from the flat wire slot 21. Therefore, in order to prevent the flat wire end from detaching from the flat wire slot 21 when it twists, the inclination of lifting cam 1 401, lifting cam 2 402, lifting cam 3 403, lifting cam 4 404, lifting cam 5 405, lifting cam 6 406, lifting cam 7 407 and lifting cam 8 408 are increased sequentially. In this way, when the lifting mechanism 4 is working, the height of the twisting mold 1 201, twisting mold 2 202, twisting mold 3 203, twisting mold 4 204, twisting mold 5 205, twisting mold 6 206, twisting mold 7 207 and twisting mold 8 208 can be increased sequentially, thereby preventing the flat wire end from detaching from the twisting mold 2.

[0046] like Figure 2 and Figure 8 As shown, the tilting directions of lifting cam 1 (401), lifting cam 3 (403), lifting cam 5 (405), and lifting cam 7 (407) are opposite to the tilting directions of lifting cam 2 (402), lifting cam 4 (404), lifting cam 6 (406), and lifting cam 8 (408). This means that the rotation directions of turning mold 1 (201), turning mold 3 (203), turning mold 5 (205), and turning mold 7 (207) are opposite to the rotation directions of turning mold 2 (202), turning mold 4 (204), turning mold 6 (206), and turning mold 8 (208), allowing adjacent flat wires to cross and twist. The tilting directions of lifting cam 1 (401), lifting cam 2 (402), lifting cam 3 (403), lifting cam 4 (404), lifting cam 5 (405), lifting cam 6 (406), lifting cam 7 (407), and lifting cam 8 (408) can be changed according to product requirements, thereby altering the direction of the flat wire end twist.

[0047] like Figure 2 and Figure 8As shown, eight limiting cams 42 are correspondingly arranged above the eight lifting cams 40. The eight limiting cams 42 are limiting cam 1 421, limiting cam 2 422, limiting cam 3 423, limiting cam 424, limiting cam 5 425, limiting cam 6 426, limiting cam 7 427 and limiting cam 8 428. Limiting cam 1 421, limiting cam 2 422, limiting cam 3 423, limiting cam 424, limiting cam 5 425, limiting cam 6 426, limiting cam 7 427 and limiting cam 8 428 can respectively play a rolling role in conjunction with lifting follower wheel 1 411, lifting follower wheel 2 412, lifting follower wheel 3 413, lifting follower wheel 414, lifting follower wheel 5 415, lifting follower wheel 6 416, lifting follower wheel 7 417 and lifting follower wheel 8 418.

[0048] like Figures 1 to 14 As shown, when the multi-layer flat wire end twisting device of the motor stator twists the motor stator, the end of the flat wire needs to be inserted into the flat wire slot 21 in the twisting mold 2. If the motor stator has 8 slots of flat wire, the 8 slots of flat wire are respectively inserted into the flat wire slots 21 of twisting mold 1 201, twisting mold 202, twisting mold 3 203, twisting mold 4 204, twisting mold 5 205, twisting mold 6 206, twisting mold 7 207 and twisting mold 8 208. Then, the tooth protection mechanism 5 works to fix the stator. The driving component 9 503 drives the inclined wedge plate 502 to rotate. The inclined wedge plate 502 drives the inclined wedge block 508 to move. The inclined wedge block 508 drives the tooth protection plate 507 to extend radially on the slide groove 504. The inner end of the tooth protection plate 507, which is evenly distributed along the circumference of the stator, extends into the adjacent flat wires to fix and clamp the flat wires, which facilitates the twisting of the flat wire ends.

[0049] Then, drive components 1 (321), 3 (323), 5 (325), and 7 (327) drive turntables 1 (311), 3 (313), 5 (315), and 7 (317) to rotate counterclockwise, causing turn-head molds 1 (201), 3 (203), 5 (205), and 7 (207) to rotate counterclockwise. Drive components 2 (322), 4 (324), 6 (326), and 8 (328) drive turntables 2 (312), 4 (314), 6 (316), and 8 (318) to rotate clockwise, causing turn-head molds 2 (202), 4 (204), 6 (206), and 8 (208) to rotate clockwise, which can cause adjacent flat wires to cross and twist. When the drive mechanism 3 drives the rotating head mold 2 to rotate, turntable 1 311 drives the lifting follower wheel 1 411 to roll on the lifting cam 1 401, and turntable 1 311 rotates counterclockwise and rises. Turntable 2 312 drives the lifting follower wheel 2 412 to roll on the lifting cam 2 402, and turntable 2 312 rotates clockwise and rises. Turntable 3 313 drives the lifting follower wheel 3 413 to roll on the lifting cam 3 403, and turntable 3 313 rotates counterclockwise and rises. Turntable 4 314 drives the lifting follower wheel 414 to roll on the lifting cam 404, and turntable 4 314 rotates clockwise and rises. Turntable 5 315 drives the lifting follower wheel 5 415 to roll on the lifting cam 5 405, and turntable 5 315 rotates counterclockwise and rises. Turntable 6 31 6 drives the lifting follower wheel 416 to roll on the lifting cam 406, and the turntable 316 rotates clockwise and rises. The turntable 317 drives the lifting follower wheel 417 to roll on the lifting cam 407, and the turntable 317 rotates counterclockwise and rises. The turntable 318 drives the lifting follower wheel 418 to roll on the lifting cam 408, and the turntable 318 rotates clockwise and rises. This causes the twisting molds 201, 202, 203, 204, 205, 206, 207, and 208 to rise, completing the twisting of the flat wire end inserted in the flat wire slot 21, and preventing the flat wire end from coming out of the flat wire slot 21 during twisting.

[0050] After the end of the flat wire is twisted, the drive component 9 503 drives the inclined wedge plate 502 to rotate, causing the tooth guard 507 to retract radially back to its original position. The drive components 1 321, 3 323, 5 325, and 7 327 drive the turntables 1 311, 3 313, 5 315, and 7 317 to rotate clockwise to reset. The lifting follower wheels 1 411, 3 413, 5 415, and 7 417 descend and reset on the lifting cams 1 401, 3 403, 5 405, and 7 407, respectively. Drive components 2 (322), 4 (324), 6 (326), and 8 (328) respectively drive turntables 2 (312), 4 (314), 6 (316), and 8 (318) to rotate counterclockwise and reset. Lifting follower wheels 2 (412), 4 (414), 6 (416), and 8 (418) descend and reset on lifting cams 2 (402), 4 (404), 6 (406), and 8 (408), respectively. The flat wire end disengages from the flat wire slot 21, the stator is removed, and the twisting process of the flat wire end is completed.

[0051] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the present invention, and these should also be considered to fall within the protection scope of the present invention.

Claims

1. A multi-layer flat wire end twisting device for a motor stator, comprising a fixing plate (1), characterized in that, The fixed plate (1) is provided with a turning head mold (2), which includes a cylindrical turning head mold (20). The upper end face of the turning head mold (20) is provided with a flat wire slot (21) along the circumferential direction. There are 1-8 turning head molds (20). The turning head molds (20) are nested in the radial direction. A tooth protection mechanism (5) for fixing the workpiece is provided above the turning head mold (2). A drive mechanism (3) for driving the turning head mold (2) to rotate and a lifting mechanism (4) for driving the turning head mold (2) to rise and fall are provided below the fixed plate (1). The drive mechanism (3) includes a support plate (30). A turntable (31) and a drive component (32) for driving the turntable (31) to rotate are provided on the support plate (30). There are 1-8 sets of drive mechanisms (3) corresponding to the turning head molds (20). The lifting mechanism (4) Includes a lifting cam (40) set on a support plate (30). The inclined arc surface of the lifting cam (40) is set along the circumference of the turntable (31). A lifting follower wheel (41) is set on the side wall of the turntable (31). The lifting follower wheel (41) is set on the lifting cam (40). The lifting mechanism (4) and the driving mechanism (3) are respectively set with 1-8 sets. The lifting cam (40) is respectively set with 1-8 sets. The lifting follower wheel (41) is respectively set with 1-8 sets. The inclination of the lifting cam (40) increases from bottom to top. The inclination direction of the lifting cam (40) in the adjacent lifting mechanism is opposite. 1-8 limit cams (42) are respectively set above the lifting cam (40). The lifting follower wheel (41) is set between the lifting cam (40) and the limit cam (42).

2. The motor stator multilayer flat wire end twisting device according to claim 1, characterized in that, The support plates (30) are configured in sets of 1-8, and the support plates (30) are arranged sequentially below the fixed plate (1). The drive components (32) are configured in sets of 1-8, and the turntables (31) are configured in sets of 1-8.

3. The multi-layer flat wire end twisting device for a motor stator according to claim 2, characterized in that, A rotating shaft (33) is provided between the turntable (31) and the twisting mold (2). One to eight rotating shafts (33) are provided corresponding to the twisting mold (20). The rotating shafts (33) are nested in the radial direction.

4. The multi-layer flat wire end twisting device for a motor stator according to claim 1, characterized in that, The tooth protection mechanism (5) includes a base (501), on which a wedge plate (502) and a driving component (503) for driving the wedge plate (502) to rotate are provided. The wedge plate (502) is uniformly provided with wedge grooves (504). A tooth protection plate (505) is provided above the wedge plate (502). A sliding groove (506) is uniformly provided above the wedge grooves (504) on the tooth protection plate (505). The wedge grooves (504) and the sliding grooves (506) are intersected. A tooth protection paddle (507) is provided on the sliding groove (506). A wedge block (508) is provided on the tooth protection paddle (507). The wedge block (508) is provided on the wedge groove (504).

5. A multi-layer flat wire end twisting device for a motor stator according to claim 4, characterized in that, The width of the inner end of the tooth protector (507) is smaller than the width of the outer end.

Images