CN114977693A - Unfolding type stator pulling and rolling type rounding device and application - Google Patents

Abstract

The invention provides a pulling and rolling type rounding device of an unfolded stator and application thereof. The pull-rolling type rounding device comprises a rolling mechanism, a first limiting piece and a driving mechanism; the coiling mechanism is used for mounting a stator, the coiling mechanism is mounted on the first limiting piece, a driving mechanism is connected onto the coiling mechanism, and the driving mechanism drives the coiling mechanism to switch between a feeding position and a rolling position; the crimping mechanism encloses a near circular shape in the crimped position. The pull-coiling rounding device provided by the invention is used for rolling the unfolded stator after winding into a round shape.

Description

Unfolding type stator pulling and rolling type rounding device and application

Technical Field

The invention belongs to a stator production device, and particularly relates to a stretching and rolling type rounding device of an unfolded stator and application thereof.

Background

Patent document CN201710791051.4 discloses an unfolded single machine winding machine structure adapted to a method of winding enamelled wire on an unfolded stator, which winding method is particularly suitable for the production of high slot fill rate stators. After the winding of the method is finished, the unwound stator needs to be rolled into a circular stator, and the process is generally called rounding.

Disclosure of Invention

The invention provides a pulling and rolling type rounding device of an unfolded stator and application thereof, which can roll the unfolded stator into a round shape.

In order to achieve the above object, the technical solution provided by the present invention comprises:

the invention provides a pulling and rolling type rounding device of an unfolded stator, which comprises a rolling mechanism, a first limiting piece and a driving mechanism, wherein the first limiting piece is arranged on the rolling mechanism; the coiling mechanism is used for mounting a stator, the coiling mechanism is mounted on the first limiting piece, a driving mechanism is connected onto the coiling mechanism, and the driving mechanism drives the coiling mechanism to switch between a feeding position and a rolling position; the crimping mechanism encloses a near circular shape in the crimped position.

As another preferred scheme, the crimping mechanism is a set of articulated tooling blocks, one of which is a fixed block, and the fixed block is fixed on the first limiting member. The tool blocks are in a linear shape, the feeding position is used for fixing the unfolded stator on the crimping mechanism, and the tool blocks are hinged to each other and can rotate relatively under the driving of the driving mechanism, so that the tool blocks with the mounted stator can be round or nearly round, and the switching between the feeding position and the crimping position is realized.

Furthermore, a second limiting block is arranged on the tooling block and can clamp a back groove of the stator; the second limiting block is used for fixing the stator.

As another preferred scheme, the driving mechanism includes a first push rod and a second push rod, the first push rod is rotatably connected with the curling mechanism, the first push rod is rotatably connected with the second push rod, and the second push rod can perform linear motion. The first push rod and the second push rod are used for transmission, mutual rotation is achieved through the driving force of a driving element such as a motor or an air cylinder, movement steering is achieved, and arc movement of two ends of the curling mechanism is achieved.

As another preferable scheme, the roll pulling and rounding device is further provided with a mandrel, and the mandrel can move along the axial direction of the stator. The peripheral side of the mandrel provides a motion direction limiting function for a stator fixed on the crimping mechanism.

Furthermore, a fixed core piece is arranged outside the mandrel and can support and limit the tooth part of the stator. The core fixing piece can limit the mandrel; the outer side is used for contacting the inner side of the lower part of the curling mechanism when in the curling position, and the limiting effect on the curled stator is achieved.

As another preferable scheme, the rolling device further comprises a jacking mechanism, and the jacking mechanism is positioned at the outer side of the rolling mechanism in the rolling position. The jacking mechanism can push the outer side of the curling mechanism along the radial direction of the rounded stator, so that the curling mechanism is further tightened to form a perfect circle.

Furthermore, the jacking mechanism is a group of first air cylinders, and the first air cylinders correspond to the outer sides of the tool blocks in the rolling positions.

As another preferred scheme, the motor stator further comprises a slot paper pushing mechanism, wherein the slot paper pushing mechanism comprises a slot paper pushing knife, and the slot paper pushing knife can be close to or far away from the stator. The slot paper pushing mechanism can push slot paper at two ends of the unfolded stator into a stator tooth slot to form a slot wedge with an insulating effect between wire packets.

The invention also provides application of the uncoiling type stator coiling device in a production line system for producing the stator, and the uncoiling type coiling device is positioned at the discharge end of a stator coiling machine.

Compared with the prior art, the invention has the advantages and beneficial effects that: the pull-rolling type rounding device provided by the invention can realize expanded stator rounding. The tooling block is hinged so that the coiling is not influenced by the connection mode between the stators and can be used for coiling of the sectional type stators. The rolling position is provided with a jacking mechanism which can further tighten up the arrangement of the blocked stators, the stators after rolling are kept circular by uniform force application, and the external diameter of the stators can be ensured to be within the standard and can be directly welded.

Drawings

FIG. 1 is a schematic top view of an embodiment in a loading position;

FIG. 2 is a schematic top view of the structure of the embodiment in a rolled position;

FIG. 3 is a partial schematic structural view of the structure of the embodiment;

FIG. 4 is a schematic structural view of a tooling block;

FIG. 5 is a partial schematic view of the coil-drawing rounding device of the unfolded stator;

FIG. 6 is a schematic sectional view of the structure of FIG. 5 mounted on a work bench;

FIG. 7 is a schematic structural view of a slot paper pushing mechanism;

FIG. 8 is a schematic diagram of an application structure of a uncoiled stator coil rounding device on a production line;

10. a crimping mechanism; 11. a first limit piece; 12. a stator; 13. a tooling block; 14. a fixed block; 15. a movable block; 16. a second limiting block; 17. a work table; 20. a drive mechanism; 21. a first push rod; 22. a second push rod; 23. a first mounting plate; 24. a first motor; 30. a mandrel; 31. a first guide bar; 32. a first cylinder; 33. a first support frame; 34. fixing the core piece; 35. a second mounting plate; 40. a jacking mechanism; 41. a second cylinder; 42. a pushing block; 43. a third mounting plate; 44. a second guide bar; 45. a third cylinder; 50. a slot paper pushing mechanism; 51. a fourth cylinder; 52. a second support frame; 53. a slot paper push broach; 60. a feeding mechanism;

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 7 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," "tail," and the like, indicate orientations or positional relationships that are based on the orientations or positional relationships illustrated in the drawings, are used for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the invention.

Structure of one-time drawing and rolling type rounding device

The structure of the coil-pulling rounding device of the expanded stator of the invention is shown in fig. 1-7, and comprises a coiling mechanism 10, a first limiting piece 11 and a driving mechanism 20; the curling mechanism 10 is used for installing a stator 12, the curling mechanism 10 is installed on the first limiting piece 11, the curling mechanism 10 is connected with a driving mechanism 20, and the driving mechanism 20 drives the curling mechanism 10 to switch between a feeding position and a rolling position; the curling mechanism 10 is linear when in the loading position, and the curling position is nearly circular when in the curling position.

In the embodiment of the present invention, the first limiting member 11 is a rectangular parallelepiped, and the bottom end thereof is fixed on the worktable 17 through a positioning column for limiting the curling mechanism 10.

As shown in fig. 1 to 3, the crimping mechanism 10 is a hinge structure formed by sequentially hinging a plurality of tool blocks 13 with the same structure, a rotating shaft is perpendicular to a workbench 17, and the tool blocks are linear during feeding so as to be conveniently matched with a stator 12; the tooling blocks 13 are hinged to enable the crimping mechanism 10 to be able to enclose a near circular or even circular shape by crimping, thereby rounding the stator 12. One tooling block 13 of the crimping mechanism 10 is fixed on the first limiting member 11, and the first limiting member 11 is fixed on the workbench 17. Specifically, the front side of the tooling blocks 13 is used for fixing the stator 12, one tooling block 13 in the middle is a fixed block 14, the back of the fixed block 14 is fixed in the middle of the front side of the first limiting part 11, and the other tooling blocks 13 are movable blocks 15 which are uniformly distributed on two sides of the fixed block 14 and can move relative to the first limiting part 11. Further as shown in fig. 4, a vertical groove is formed in the front side of the tooling block 13, a second limiting block 16 which can be detached is fixedly installed in the groove, the shape of the front end of the second limiting block 16 is matched with the dovetail-shaped groove in the back of the iron core of the stator 12, the back groove of the iron core of the stator 12 is clamped through the second limiting block 16, and the stator 12 after winding is fixed on the tooling block 13.

As shown in fig. 3, the crimping mechanism 10 is partially hinged to the drive mechanism 20; the driving mechanism 20 drives the curling mechanism 10 to switch between the feeding position and the curling position. Specifically, the driving mechanism 20 includes a first push rod 21, a second push rod 22, a first mounting plate 23, and a first motor 24. Two first push rods 21 are respectively hinged to the back parts of the movable blocks 15 at the left end and the right end of the curling mechanism 10, and the rotating shafts of the first push rods 21 and the movable blocks 15 are parallel to the rotating shaft hinged to the tool block 13; the rear ends of the two first push rods 21 are hinged to the front end of a second push rod 22 of the driving mechanism 20, and the hinged rotating shafts are parallel to the rotating shafts of the movable block 15 and the first push rods 21; the bottom surface of the second push rod 22 is fixed on the first mounting plate 23; the first mounting plate 23 is slidably connected to the working table 17 in a direction perpendicular to the first limiting member 11. A first motor 24 is fixed on the workbench 17, and the first motor 24 is connected with the bottom of the first mounting plate 23 through a screw rod; the first motor 24 drives the first mounting plate 23 to slide back and forth on the working table 17, thereby driving the second push rod 22 to move back and forth.

As shown in fig. 5 and 6, a mandrel 30 capable of ascending and descending is slidably mounted on the worktable 17 in front of the curling mechanism 10, the mandrel 30 is located inside the stator 12 in the curling position, and the outer diameter of the mandrel 30 is smaller than the inner diameter of the stator 12; for positioning the stator 12 in the rolled position. The bottom of the mandrel 30 is fixed on a first guide rod 31, the first guide rod 31 vertically penetrates through the workbench 17 and is connected to the output end of a first air cylinder 32, the first air cylinder 32 is fixed on a first support frame 33, and the first support frame 33 is fixed at the bottom of the workbench 17. The first cylinder 32 drives the mandrel 30 up and down in a direction parallel to the axial direction of the stator 12 in the rolled position. In the embodiment of the present invention, the table 17 is provided with a bearing corresponding to the position of the first guide rod 31, and the first guide rod 31 passes through the bearing, so that the friction coefficient between the first guide rod 31 and the table 17 can be reduced, and meanwhile, the mandrel 30 plays a stabilizing role in the lifting process. A fixed core piece 34 fixed on a second mounting plate 35 is arranged outside the mandrel 30, and the fixed core piece 34 and the axis of the mandrel 30 are on the same straight line; the inner side of the core fixing piece 34 is connected with the bottom end of the mandrel 30, and the mandrel 30 can be limited; the top of the stator core member 34 can support the teeth of the stator 12, and the outer side of the stator core member is used for contacting the inner side of the lower part of the tooling block 13 in the rolling position, so that the rolled stator 12 is limited. The bottom of the core member 34 is fixed to a second mounting plate 35, and the second mounting plate 35 is fixed to the table 17 for providing a certain height to the core member 34. In addition, the upper surface of the second mounting plate 35 can be used for receiving the bottom of the tooling block 13, so that the crimping mechanism 10 is more stable in the position switching process.

The roll-pulling rounding device further comprises a jacking mechanism 40, and as shown in fig. 5, the jacking mechanism 40 comprises a second air cylinder 41, a pushing block 42, a third mounting plate 43, a second guide rod 44 and a third air cylinder 45. The number of the second cylinders 41 is the same as that of the tooling blocks 13; the second cylinders 41 are distributed outside the stator 12 in the rounding position, arranged in the radial direction of the stator 12; the output end of the second cylinder 41 is connected with a pushing block 42, the pushing block 42 corresponds to the tooling block 13, and the tooling block 13 can be pushed along the stator 12 after rounding, so that the tooling blocks 13 are further tightened to form a perfect circle. The top surface of the pushing block 42 connected to the second cylinder 41 behind the first limiting member 11 is lower than the bottom of the first limiting member 11, so as not to hinder the pushing action of the second cylinder 41. The bottom of the second cylinder 41 is fixed to a third mounting plate 43, and the third mounting plate 43 is parallel to the table 17 and below the table 17 for supporting the second cylinder 41. The third mounting plate 43 can be close to or far away from the workbench 17, so that the second air cylinder 41 can be lifted and lowered, and the stator can be mounted and dismounted cooperatively. The specific implementation mode is as follows: four second guide rods 44 are fixed at the four corners of the bottom of the workbench 17; the second guide rod 44 is perpendicular to the workbench 17, penetrates through the third mounting plate 43 and is in sliding connection with the third mounting plate 43 through a bearing; two third air cylinders 45 are fixed below the third mounting plate 43, and the output ends of the third air cylinders 45 are fixed at the bottom of the workbench 17; the third cylinder 45 is oriented parallel to the second guide bar 44. The third cylinder 45 drives the third mounting plate 43 to move up and down along the second guide bar 44, thereby achieving the lifting of the second cylinder 41.

In the embodiment of the invention, the tooling blocks 13 of the edge rolling device are nine. According to the requirement of the product, when the required tooling blocks 13 are in other numbers, any one tooling block 13 in the middle can be used as the fixed block 14, the rest are the movable blocks 15, the shape and the stroke of the first push rods 21 are structurally designed, and the other two first push rods 21 can be driven synchronously by one motor or can be driven by two motors or cylinders in the embodiment of the invention.

In the embodiment of the present invention, the roll pulling and rounding device further includes a slot paper pushing mechanism 50 as shown in fig. 7, for pushing the slot paper at both ends into the stator 12 tooth slot to form a slot wedge with insulation function between wire packets. The fluted paper pushing mechanism 50 comprises a fourth air cylinder 51, the fourth air cylinder 51 is fixed on a second support frame 52, and the second support frame 52 is fixed on the workbench 17. The output end of the fourth cylinder 51 is connected with a slot paper push broach 53, the bottom of the slot paper push broach 53 is connected to the second support frame 52 in a sliding manner, the sliding direction is along the radial direction of the stator 12 when the circle rolling position is reached, and the position of the slot paper push broach 53 is just opposite to the position between the movable blocks 15 at the two ends of the circle rolling position; the fourth cylinder 51 pushes the slot paper push knife 53 to approach between the tool blocks 13 or to be far away from the tool blocks 13. The fluted paper pushing mechanism 50 is used for aiming at the following production processes: before the expanded stator 12 is wound, slot paper is inserted into the tooth slot of the stator 12 to realize insulation between the iron core of the stator 12 and the coil, wherein the slot paper at two ends is pushed into the space between the two stators 12 of the interface by the slot paper pushing mechanism 50 to be used for coil insulation at the edge of the edge winding.

In another embodiment as shown in fig. 8, the roll-pulling rounding device is used in a production line system for producing stators, the roll-pulling rounding device is located beside the discharge end of a stator winding machine, and a feeding mechanism 60 is arranged beside the production line to realize that the wound stators are picked up from the production line and placed after being aligned downwards with the second limiting block 16. The feeding mechanism 60 can be used for clamping and placing by the prior art, and the description thereof is omitted.

Working method of roll-pulling type rounding device

Feeding: the unfolded stator 12 is placed after being aligned downwards with the second limiting block 16;

rolling: the material loading position is switched to a rolling position, and the mandrel 30 moves to the height of the stator 12 under the driving of the first air cylinder 32; the first motor 24 drives the second push rod 22 to move forward, so as to drive the movable blocks 15 at the two ends of the tooling block 13 to move forward; under the action of the hinged fixed block 14, the front end of the first push rod 21 is pulled to move towards the middle; the tooling block 13 is close to the core fixing piece 34, the stator 12 on the tooling block 13 is close to the mandrel 30, the first push rods 21 on the left side and the right side rotate inwards relative to the second push rods 22 in the process, meanwhile, the first push rods 21 rotate relative to the movable block 15 hinged with the first push rods 21, the tooling block 13 reaches the rounding position under the action of the core fixing piece 34 or the mandrel 30, and the tooling block 13 is encircled into a circle when the tooling block is in the rounding position.

And (4) paper ejection: before reaching the rolling position, the fourth cylinder 51 of the slot paper pushing mechanism 50 pushes the slot paper pushing knives 53 to move towards the inside of the stator 12, and the slot paper pushing knives 53 push the insulation slot paper on the two ends of the curling mechanism 10 into the tooth grooves of the stator 12.

And (3) jacking: after the tightening mechanism 40 moves to the height of the tooling block 13 under the driving of the third air cylinder 45, the second air cylinder 41 pushes the tooling block 13 to be tightly attached to the mandrel 30 and the core fixing piece 34.

Taking down: the mandrel 30 descends to take the stator 12 after being rolled up from the tooling block 13, and the rolling position is switched to the loading position

The action when returning the frock piece 13 includes: the first position limiting member 11 is not moved, the second push rod 22 moves backward to drive the first push rod 21 to push backward, so as to drive the movable blocks 15 at two sides of the fixed block 14 to approach the first position limiting member 11, and the first push rod 21 rotates outward relative to the second push rod 22 in the process that the movable blocks 15 sequentially abut against the first position limiting member 11 until the movable blocks 15 all abut against the first position limiting member 11, and then the feeding position is returned.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A roll drawing and rounding device of an unfolded stator is characterized in that: comprises a curling mechanism (10), a first limiting piece (11) and a driving mechanism (20); the winding mechanism (10) is used for mounting a stator (12), the winding mechanism (10) is mounted on the first limiting piece (11), the winding mechanism (10) is connected with a driving mechanism (20), and the driving mechanism (20) drives the winding mechanism (10) to be switched between a feeding position and a rolling position; in the curling position, the curling mechanism (10) is encircled to be approximately round.

2. The unrolling and rounding device for an unrolled stator according to claim 1, characterized in that the crimping mechanism (10) is a set of hinged tooling blocks (13), one of the tooling blocks (13) being a fixed block (14), and the fixed block (14) is fixed to the first limiting piece (11).

3. The uncoiling type rounding device for the expanded stator according to claim 2, wherein a second limiting block (16) is arranged on the tooling block (13), and the second limiting block (16) can clamp a back groove of the stator (12).

4. The unrolling stator according to claim 1, characterised in that the driving mechanism (20) comprises a first push rod (21) and a second push rod (22), the first push rod (21) is connected with the rolling mechanism (10) in a rotating way, the first push rod (21) is connected with the second push rod (22) in a rotating way, and the second push rod (22) can move in a straight line.

5. Unrolling rounding device according to claim 1, characterized in that it is also provided with a mandrel (30), which mandrel (30) is movable in the axial direction of the stator (12).

6. The unrolling rounding device according to claim 5, characterised in that the mandrel (30) is externally provided with a core retainer (34), the core retainer (34) being able to support and retain the teeth of the stator (12).

7. The unrolling stator according to claim 1 or 2, characterised in that it further comprises a tightening mechanism (40), the tightening mechanism (40) being located outside the crimping mechanism (10) in the crimping position.

8. The unrolling stator according to claim 7, characterised in that the jacking mechanism (40) is a set of second cylinders (41), the second cylinders (41) corresponding to the outside of the tooling blocks (13) in the rolling position.

9. The unrolling rounding device for an unfolded stator according to claim 1 characterized in that it further comprises a fluted paper pushing mechanism (50), said fluted paper pushing mechanism (50) comprising a fluted paper push knife (53), said fluted paper push knife (53) being able to approach or move away from the stator (12).

10. Use of the uncoiled stator rounding device according to any of claims 1 to 9 in a production line system for producing stators.

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