CN211508860U

CN211508860U - Stator coil tightening device of motor

Info

Publication number: CN211508860U
Application number: CN202020072238.6U
Authority: CN
Inventors: 史传根; 乔俊伟; 徐年丰; 钱志超
Original assignee: Shanghai Huatai Information Technology Co ltd
Current assignee: Shanghai Huatai Information Technology Co ltd
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2020-09-15
Anticipated expiration: 2030-01-14

Abstract

The utility model provides a stator coil tightening means of motor, tightening means including: the inner ring of the upper surface of the guide disc is provided with a circle of insertion pipes for inserting first bottom feet of the U-shaped coil, and the guide disc is provided with a plurality of first guide sliding chutes; the driving turntable is arranged below the guide disc, and a plurality of second guide sliding chutes are formed in the driving turntable; the pushing mechanism is provided with a plurality of push rods, each push rod respectively penetrates through a first guide sliding groove and a second guide sliding groove at the same time, and each push rod can move in the first guide sliding groove and the second guide sliding groove; the driving turntable rotates relative to the guide disc to drive the push rods in the first guide chute and the second guide chute to move from outside to inside so as to push the second bottom foot of the outer ring to rotate towards the inner ring. This device adopts mechanized mode to tighten up the coil section of thick bamboo, has greatly improved and has tightened up efficiency, can effectively avoid the coil to warp simultaneously.

Description

Stator coil tightening device of motor

Technical Field

The utility model relates to a stator winding processing of hairpin machine, concretely relates to stator coil tightening means of motor.

Background

A stator core of an existing hairpin motor is of a hollow structure, a plurality of layers of annular coil units formed by U-shaped hairpin coils are inserted into the stator core, and fig. 1 shows a current U-shaped hairpin coil. At present, the domestic mode is that one hairpin coil is inserted into a ring shape and then transferred into a stator core. During this operation we found a number of problems:

(1) when each hairpin coil is inserted and a circle of annular coil units is to be finished, the last hairpin coils are difficult to insert due to mutual extrusion of the coils, so that workers need to expend great energy and physical force to insert the last hairpin coils in place;

(2) because the last hair-pin coils are difficult to insert in place, the hair-pin coils are likely to be bent by improper force applied by workers in the operation, so that the product quality is influenced;

(3) the manual operation mode is inefficient, and the product quality is not guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses under the background to inserting coil inefficiency and easy going out the problem to current manual, provide the stator coil tightening means of motor, utilize mechanized mode to tighten up in advance the U type coil in the stator winding, greatly improved production efficiency, stability is good simultaneously. The specific scheme is as follows:

a stator coil tightening device of a motor, a plurality of U-shaped coils are mutually combined and sleeved to form a cylindrical coil cylinder, two feet are arranged on the U-shaped coils, and the stator coil tightening device of the motor comprises:

the guide plate is in a circular ring shape or a disc shape, the guide plate is horizontally configured, a circle of insertion pipes for inserting first bottom feet of the U-shaped coil are arranged on the inner ring of the upper surface of the guide plate, and a plurality of first guide sliding chutes distributed in the anticlockwise or anticlockwise direction are formed in the guide plate;

the driving turntable is coaxially and horizontally arranged below the guide plate, a plurality of second guide sliding chutes are formed in the driving turntable, and the distribution direction of the second guide sliding chutes is opposite to that of the first guide sliding chutes;

the pushing mechanism is provided with a plurality of push rods, the number of the first guide sliding chutes and the number of the second guide sliding chutes are the same, each push rod simultaneously penetrates through one first guide sliding chute and one second guide sliding chute respectively, each push rod can move in the first guide sliding chute and the second guide sliding chute, and each push rod is provided with a supporting mechanism positioned between the guide disc and the driving rotary disc;

the driving turntable rotates relative to the guide disc to drive the push rods in the first guide chute and the second guide chute to move from outside to inside so as to push the second bottom foot of the outer ring to rotate towards the inner ring.

Further, the support mechanism includes:

the sliding block is arranged between the guide disc and the driving turntable, and the push rod penetrates through the sliding block up and down;

the first rollers are arranged on the upper surface of the sliding block and are respectively arranged on two sides of the push rod, and the peripheral surface of each first roller is in frictional contact with the inner wall of the corresponding first guide sliding groove;

and the second rollers are arranged on the lower surface of the sliding block and are respectively arranged on two sides of the push rod, and the push rod slides in the first guide sliding groove and the second guide sliding groove, so that the lower edge of the second roller is in friction contact with the upper surfaces of the driving turnplates on two sides of the second guide sliding groove.

Further, a cone or a ball is arranged on the lower surface of the second roller, and the bottom end of the cone or the ball abuts against the upper surface of the driving turntable;

the lower end of the push rod is rotatably provided with a third roller, and the peripheral surface of the third roller is in frictional contact with the inner wall of the second guide sliding groove.

Further, the first guide chute and the second guide chute are arc chutes radially arranged on the guide disc and the drive turntable.

Furthermore, a guide fixing plate is coaxially arranged above the guide disc, a plurality of third guide grooves are arranged on the guide fixing plate, the distribution direction of the third guide grooves is the same as that of the first guide sliding grooves, the first bottom foot of each U-shaped coil penetrates through one of the third guide grooves to be inserted into the insertion tube, and the second bottom foot penetrates through the other corresponding third guide groove.

Furthermore, an elastic tightening device is arranged on the upper surface of the guide fixing plate between the outer diameter of the guide fixing plate and the third guide groove, and an elastic thimble is arranged on one side, facing the third guide groove, of the elastic tightening device.

Further, the insertion pipe is arranged between the inner ring side of the first guide chute and the axis of the guide disc, or the insertion pipe is located in the first guide chute and is arranged close to the inner ring side.

Furthermore, a push block is arranged at the top end of the push rod.

Furthermore, the bottom of the driving turntable is connected with a driving device through a connecting shaft sleeve.

The utility model has the advantages that:

(1) the device tightens each U-shaped coil in the coil cylinder, greatly improves the tightening efficiency, and meanwhile, the stress in each direction of the coil is uniform in the tightening process, so that the coil deformation is avoided;

(2) the coil cylinder is tightened in a mechanical mode, so that the production efficiency is greatly improved, and meanwhile, the production cost is reduced through mechanical production;

(3) the push rod of the pushing mechanism is designed with a targeted reinforcement (a supporting structure and a plurality of rollers), so that the pushing mechanism runs more stably and reliably, and the service life of the pushing mechanism is prolonged;

(4) the elastic tightening device is used for elastically limiting the outer side bottom foot of the first inserted coil, so that the coil is prevented from rotating by itself before the coil is tightened.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

FIG. 1 is a schematic view of a current U-shaped hairpin coil;

fig. 2 is an overall schematic view of a stator coil tightening device of a motor according to the present invention;

FIGS. 3-4 are perspective views of the stator coil take-up device with the upper guide fixing plate removed;

FIG. 5 is an assembly view of the drive turret with the pushing mechanism and the support mechanism;

FIG. 6 is a schematic view of a guide fixing plate, a guide disc and a drive turntable;

FIG. 7 is an assembly view of the pushing mechanism and the support mechanism;

FIG. 8 is a schematic view of an elastic tightening device disposed on the guide fixing plate;

fig. 9 is a perspective view of the elastic tightening device.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

In order to thoroughly understand the present invention, detailed steps and detailed structures will be provided in the following description so as to explain the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.

The utility model provides a stator coil tightening means of motor, a plurality of U type coil 10 intercombination cover are put into the bobbin of cylinder, and U type coil 10 is provided with two footing (as shown in fig. 1), as shown in fig. 2-7, this stator coil tightening means of motor including:

a circular or disc-shaped guide disc 100, the guide disc 100 being horizontally disposed, a circle of insertion tubes 102 for inserting the first feet 11 of the U-shaped coil 10 being disposed around an upper surface of the guide disc 100, and a plurality of first guide chutes 101 (as shown in fig. 2-6) disposed on the guide disc 100 in a counterclockwise or counterclockwise direction;

a circular or disc-shaped driving turntable 200, wherein the driving turntable 200 is coaxially and horizontally arranged below the guide disc 100, a plurality of second guide chutes 201 are formed in the driving turntable 200, and the distribution direction of the second guide chutes 201 is opposite to that of the first guide chutes 101 (as shown in fig. 2, 3, 4 and 6);

the pushing mechanism 300 is provided with a plurality of push rods 310, the number of the push rods 310 is the same as that of the first guide sliding chute 101 and that of the second guide sliding chute 201, each push rod 310 respectively penetrates through the first guide sliding chute 101 and the second guide sliding chute 201 at the same time, each push rod 310 can move in the first guide sliding chute 101 and the second guide sliding chute 201, and each push rod 310 is provided with a supporting mechanism 320 located between the guide disc 100 and the driving turntable 200;

the driving turntable 200 rotates relative to the guide disc 100, and the push rod 310 in the first guide chute 101 and the second guide chute 201 is driven to move from outside to inside to push the second bottom leg 12 of the outer ring to rotate towards the inner ring.

In an alternative embodiment, the support mechanism 320 includes a slider 321, a first roller 322, and a second roller 323. The slider 321 is installed between the guide plate 100 and the driving turntable 200, and the push rod 310 vertically penetrates the slider 321 and is rotatably disposed on the slider 321. The first rollers 322 are disposed on the upper surface of the sliding block 321 and are respectively arranged on two sides of the push rod 310, and the outer circumferential surface of the first rollers 322 is in frictional contact with the inner wall of the first guide chute 101. The second rollers 323 are disposed on the lower surface of the sliding block 321 and are respectively arranged on two sides of the push rod 310, and the push rod 310 moves on the first guide sliding groove 101 and the second guide sliding groove 201, so that the lower edges of the second rollers 323 are in frictional contact with the upper surfaces of the driving dials 200 on two sides of the second guide sliding groove 201.

In an alternative embodiment, as shown in fig. 7, the lower surface of the second roller 323 is provided with a cone or a ball, and the bottom end of the cone or the ball abuts against the upper surface of the driving turntable 200; the lower end of the push rod 310 is rotatably provided with a third roller 324, and the outer circumferential surface of the third roller 324 is in frictional contact with the inner wall of the second guide chute 201.

The stability of the push rod 310 is decisive, since the push rod 310 passes through the first guide runner 101 of the guide disc 100 and the second guide runner 201 of the driving turntable 200 simultaneously, and is subjected to a large lateral force during the rotation, and the normal operation of the push rod 310 determines whether the coils can be tightened inwards normally. Without necessarily ensuring its strength, we improve the stability of the operation of the push rod 310 by:

1) the bottom of the push rod 310 is provided with a third roller 324 arranged in the second guide sliding chute 201, the diameter of the third roller 324 is equivalent to the width of the second guide sliding chute 201, and the third roller 324 and the second guide sliding chute 201 are in friction decryption contact, when the push rod 310 rotates relative to the drive turntable 200, the lateral force applied from the inner wall of the second guide sliding chute 201 is born by the side wall surface of the third roller 324, and in addition, as the third roller 324 is rotatably arranged at the bottom of the push rod 310, the influence of the drive turntable 200 on the force of the third roller 324 can be reduced in a rolling friction mode in the rotating process.

2) Each push rod 310 is provided with a supporting mechanism 320 between the guide disc 100 and the driving turntable 200, two second rollers 323 are arranged on two sides of the push rod 310 on the lower surface of a sliding block 321 of the supporting mechanism 320, two first rollers 322 are arranged on two sides of the push rod 310 on the upper surface of the sliding block 321, the push rod 310 is forced to move along the first guide sliding groove direction when the guide disc 100 and the driving turntable 200 rotate relatively, in the moving process of the push rod 310, the two first rollers 322 bear the transverse force exerted from the inner wall of the first guide sliding groove 101, and the sliding block 321 and the second rollers 323 can bear the longitudinal force, so that the force directly borne by the push rod 310 in the rotating process of the guide disc 100 and the driving turntable 200 is reduced as much as possible, and the running stability of the push rod 310 can be well ensured.

The utility model discloses a two second gyro wheels 323 of positioning disk 100, drive carousel 200 and slider 321 lower surface are through experimental demonstration, can not fall into second direction spout 201 in the slip in-process, no matter how positioning disk 100, drive carousel 200 and push rod move promptly, the bottom of second gyro wheel 323 all the time with the regional upper surface friction contact of non-spout of drive carousel 200.

In an alternative embodiment, as shown in fig. 7, the top end of the push rod 310 is provided with a push block 311. The push block 311 can increase the force application area on the coil to better push the coil to move radially from outside to inside. It should be noted that, after the coils are fully inserted, because the coils are immediately adjacent to each other, when the push rod 310 pushes the coils to tighten, even if a part of the coils is not directly acted by the push rod 310, the rest of the coils will drive the part of the coils to slide inwards together when rotating, thereby realizing the tightening of all the coils.

In an alternative embodiment, the first guide runner 101 and the second guide runner 201 are arc runners radially disposed on the guide plate 100 and the drive turret 200. The diameter of the third roller 324 is equivalent to the width of the second guide chute 201, and the diameter of the first roller 322 is equivalent to the width of the first guide chute 101, so as to prevent the third roller 324 and the first roller 322 from generating unnecessary radial movement in the second guide chute 201 and the first guide chute 101.

In an alternative embodiment, referring to fig. 2, 6 and 8, a guide fixing plate 400 is coaxially disposed above the guide plate 100, a plurality of third guide grooves 401 are disposed on the guide fixing plate 400 in the same direction as the first guide sliding grooves 101, the first foot 11 of each U-shaped coil 10 passes through one of the third guide grooves 401 to be inserted into the insertion tube 102, and the second foot 12 passes through the other corresponding third guide groove 401. The guide fixing plate 400 plays a role in guiding the coil in the longitudinal direction, and since the U-shaped coil 10 has a high height, deformation may occur in any process, which may affect the final quality of the coil, and in this case, the guide fixing plate 400 is additionally coaxially disposed above the guide disc 100, so that the guide fixing plate 400 restricts the sliding of the coil to prevent the top coils from being lapped together, and the guide fixing plate 400 also provides lateral support for the upper ends of the coils.

When a first U-shaped coil 10 is inserted, because the left and right sides of the first U-shaped coil are not supported by other coils, the inserted first U-shaped coil 10 easily rotates by itself, which may affect the insertion of the subsequent other coils and also cause unstable factors for the tightening of the coils. Therefore, elastic tightening device 500 is disposed on the upper surface of guide fixing plate 400 between the outer diameter of guide fixing plate 400 and third guide slot 401, and elastic ejector pin 501 is disposed on the side of elastic tightening device 500 facing third guide slot 401, as shown in fig. 8-9. When inserting first U type coil 10 extremely the utility model discloses a when on the device, second footing 12 in the U type coil 10 outside can the butt in the one end of elasticity thimble 501, and both ends receive elasticity thimble 501 and third guide way 401 about second footing 12 and keep away from the restriction of elasticity thimble 501 one side inner wall and make it unable proper motion rotation. When the coil tightening process is started, the driving turntable 200 rotates relative to the guide disc 100 and the guide fixing plate 400, the second bottom foot 12 starts to slide from outside to inside in the radial direction, the front side of the elastic thimble 501 is forced to recede outwards, so that the second bottom foot 12 cannot be blocked in the sliding process, when the second bottom foot 12 slides to the rear side of the elastic thimble 501, the elastic thimble 501 loses the acting force of the second bottom foot 12 and automatically pops forwards, and the first coil of the next round is conveniently fixed after being inserted.

In an alternative embodiment, as shown in fig. 3 to 4, the insertion tube 102 is disposed between the inner ring side of the first guide runner 101 and the axial center of the guide disc 100, or the insertion tube 102 is located in the first guide runner 101 and disposed near the inner ring side. After the first foot 11 of the U-shaped coil 10 is inserted into the insertion tube 102, the insertion tube 102 can rotate synchronously with the first foot 11; or the cannula 102 is stationary, the first foot 11 is free to rotate within the cannula 102.

In an alternative embodiment, the bottom of the driving turntable 200 is connected to the driving device 600 through the connecting sleeve 210.

The utility model also provides a method that adopts the stator coil tightening means of foretell motor to tighten up the U type coil in the stator winding, including following step:

providing a stator coil tightening device of the motor, and arranging the push rod 310 close to the outer ring end of the first guide chute 101;

inserting a first foot 11 of each U-shaped coil 10 into the insertion tube 102, and a second foot 12 between the push rod 310 and the inner ring end of the first guiding chute 101;

the driving device 600 drives the driving turntable 200 to rotate, the third roller 324 at the bottom of the push rod 310 in the second guiding chute 201 receives a lateral force applied from the inner wall of the second guiding chute 201, and the first roller 322 at the bottom of the slider 321 in the first guiding chute 101 receives a lateral force applied from the inner wall of the first guiding chute 101, so as to drive the push rod 310 to move in the first guiding chute 101 and the second guiding chute 201 simultaneously, and the sliding track is from outside to inside, the push block 311 at the upper end of the push rod 310 pushes the U-shaped coil 10 to use the first footing 11 as a rotation center, and the second footing 12 rotates from the outer ring to the inner ring to be folded to one end close to the center of the guiding disc 100.

After the tightening is completed, the tightened coil bobbin is taken away by using the manipulator, and then the turntable 200 is driven to rotate reversely, so that the push rod slides radially from inside to outside and returns to the original position.

The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.

Claims

1. A stator coil tightening device of a motor, a plurality of U-shaped coils (10) are mutually combined and sleeved to form a cylindrical coil cylinder, each U-shaped coil (10) is provided with two bottom feet, and the stator coil tightening device of the motor is characterized by comprising:

the coil inserting device comprises a guide disc (100) in a circular ring or disc shape, wherein the guide disc (100) is horizontally arranged, a circle of inserting pipes (102) for inserting first feet (11) of a U-shaped coil (10) are arranged on the inner circle of the upper surface of the guide disc (100), and a plurality of first guide sliding grooves (101) distributed in the anticlockwise or anticlockwise direction are formed in the guide disc (100);

the driving turntable (200) is in a circular ring shape or a disc shape, the driving turntable (200) is coaxially and horizontally arranged below the guide disc (100), a plurality of second guide sliding chutes (201) are formed in the driving turntable (200), and the distribution direction of the second guide sliding chutes (201) is opposite to the distribution direction of the first guide sliding chutes (101);

the pushing mechanism (300) is provided with a plurality of push rods (310), the number of the first guide sliding chutes (101) is the same as that of the second guide sliding chutes (201), each push rod (310) simultaneously penetrates through one first guide sliding chute (101) and one second guide sliding chute (201) and can move in the first guide sliding chute (101) and the second guide sliding chute (201), and each push rod (310) is provided with a supporting mechanism (320) positioned between the guide disc (100) and the driving turntable (200);

the driving turntable (200) rotates relative to the guide disc (100) to drive the push rods (310) in the first guide sliding groove (101) and the second guide sliding groove (201) to move from outside to inside so as to push the second bottom foot (12) of the outer ring to rotate towards the inner ring.

2. The stator coil take-up device of a motor as claimed in claim 1, wherein said support mechanism (320) comprises:

a slider (321) mounted between the guide disc (100) and the drive turntable (200), wherein the push rod (310) is vertically arranged on the slider (321) in a penetrating manner;

the first rollers (322) are arranged on the upper surface of the sliding block (321) and are respectively arranged on two sides of the push rod (310), and the peripheral surface of each first roller (322) is in frictional contact with the inner wall of the first guide sliding groove (101);

and the second rollers (323) are arranged on the lower surface of the sliding block (321) and are respectively arranged on two sides of the push rod (310), and the push rod (310) moves in the first guide sliding groove (101) and the second guide sliding groove (201), so that the lower edges of the second rollers (323) are in friction contact with the upper surfaces of the driving turntables (200) on two sides of the second guide sliding groove (201).

3. The stator coil take-up device of a motor as claimed in claim 2, wherein the lower surface of the second roller (323) is provided with a cone or a ball, and the bottom end of the cone or the ball abuts against the upper surface of the drive turntable (200);

the lower end of the push rod (310) is rotatably provided with a third roller (324), and the peripheral surface of the third roller (324) is in frictional contact with the inner wall of the second guide chute (201).

4. The stator coil tightener for a motor according to claim 1, characterized in that each of said first guide runners (101) and each of said second guide runners (201) is an arc runner radially disposed on the guide disc (100) and the drive turntable (200).

5. The stator coil take-up device for motor as claimed in claim 1, wherein a guide fixing plate (400) is coaxially disposed above said guide disc (100), a plurality of third guide grooves (401) are disposed on said guide fixing plate (400) in the same direction as the direction of distribution of said first guide sliding grooves (101), the first leg (11) of each U-shaped coil (10) passes through one of the third guide grooves (401) to be inserted into the insertion tube (102), and the second leg (12) passes through the other corresponding third guide groove (401).

6. The stator coil take-up device for motor as claimed in claim 5, wherein an elastic take-up means (500) is provided on the upper surface of the guide fixing plate (400) between the outer diameter of the guide fixing plate (400) and the third guide groove (401), and an elastic push pin (501) is provided on the side of the elastic take-up means (500) facing the third guide groove (401).

7. The stator coil tightener for a motor according to claim 1, characterized in that the insertion tube (102) is disposed between the inner ring side of the first guide runner (101) and the axial center of the pilot disc (100), or the insertion tube (102) is located in the first guide runner (101) and disposed near the inner ring side.

8. The stator coil take-up device of a motor as claimed in claim 1, wherein a top end of said push rod (310) is provided with a push block (311).

9. The stator coil take-up device of a motor as claimed in claim 1, wherein the bottom of the driving turntable (200) is connected to the driving unit (600) through a connecting boss (210).