KR102280447B1 - Apparatus for winding coil on stator - Google Patents

Abstract

A stator coil winding device capable of easily winding a coil on a stator core constituting a stator employed in a BLDC motor is presented. The proposed device includes a stator transfer unit that transports a linear stator in the X-axis and Y-axis directions, a winding guide unit that guides coil winding for the transferred stator, a winding unit that winds a coil on the stator, and a coil wound on the stator. It includes a tension control unit for adjusting the tension, and a control unit for controlling the operations of the stator transfer unit, the winding guide unit, and the winding unit so that the coil is wound on the stator based on a preset winding sequence.

Description

Apparatus for winding coil on stator

The present invention relates to a stator coil winding apparatus, and more particularly, to an apparatus for winding a coil on a stator of a BLDC motor.

Conventional DC motors have economic efficiency, ease of speed control, and simple structure despite problems such as vibration and noise due to mechanical contact between commutator and brush, dust generation due to brush abrasion, and limited service life of the brush. It has been widely used due to its advantages such as ease of design.

In recent years, as the technology related to the BLDC (Brushless DC) motor has been developed, the problems associated with the manufacturing of the control device and the manufacturing of the core have been reduced, enabling smooth speed control of the BLDC motor and having excellent efficiency over a wide variable speed range. production became possible.

Accordingly, BLDC motors have replaced DC motors in various fields such as compressor motors of air conditioners such as refrigerators and air conditioners, driving motors of drum washing machines, and mobile phones.

In particular, since a simple structure, long lifespan, low noise, and high reliability are required for wireless information devices such as mobile phones, the current BLDC motor with an inner rotor drives the automatic folder of the mobile phone. , is widely used for automatic functions such as driving a camera.

However, the conventional BLDC motor has a problem in that it is difficult to wind a coil on the annular stator core, and there is a problem in that it is difficult and complicated to manufacture a jig for winding a coil. Accordingly, the efficiency of space utilization in the BLDC motor is not high, so that the winding amount of the coil is not sufficient, and there is a problem in that excellent motor characteristics cannot be obtained.

Prior art 1: Republic of Korea Patent Registration No. 10-0669955 (Stator core winding method for brushless motor) Prior art 2: Republic of Korea Patent Registration No. 10-0592713 (a multi-core continuous winding device using a general-purpose winding machine with a single spindle structure and a winding method thereof) Prior art 3: Republic of Korea Patent Publication No. 10-2006-0093863 (Stator winding device)

An object of the present invention is to provide a stator coil winding device that enables the coil to be easily wound on a stator core constituting a stator employed in a BLDC motor.

In order to achieve the above object, a stator coil winding device according to a preferred embodiment of the present invention includes: a stator transfer unit for transferring a linear stator including a plurality of stator cores in an X-axis direction and a Y-axis direction; a winding guide unit for guiding the coil winding of the transferred stator; a winding unit for winding a coil around the stator; a tension adjusting unit for adjusting the tension of the coil wound around the stator; and a control unit for controlling operations of the stator transfer unit, the winding guide unit, and the winding unit so that the three-phase Y-connection type coil winding is made in the stator based on a preset winding sequence. A rotating shaft installed in the X-axis direction to be spaced apart from a rotating arm fixed to the rotating shaft and having a nozzle from which a coil emerges at an end thereof, a moving shaft moving in the X-axis direction inside the rotating shaft, and the moving axis in the X-axis direction A moving screw for moving, a third motor generating a force for rotating the rotating shaft, a fourth motor generating a force for moving the moving shaft, a rotating force transmitting unit transmitting a rotating force to the rotating shaft, and transmitting a moving force to the moving axis It includes a moving force transmitting unit, and a winding induction unit for inducing the coil to be wound on the stator.

The coil may be introduced into the rotating shaft and the moving shaft, and the introduced coil may be discharged through a hole formed in the rotating shaft and introduced into the rotating arm.

A coil guide groove may be formed in the rotary arm, and the coil introduced into the rotary arm may penetrate the inside of the nozzle through the coil guide groove.

An idler may be installed at a portion of the coil guide groove where the coil is first introduced.

An idler may be installed at an end of the nozzle.

The rotational force transmitting unit may include a fifth pulley installed on the motor shaft of the third motor, a sixth pulley installed on the rotation shaft, a rubber belt wound around the fifth pulley and the sixth pulley, and the sixth pulley to be spaced apart from the rotation shaft. A seventh pulley installed in the , an eighth pulley installed on the rotary shaft to be spaced apart from the seventh pulley, a pulley connector installed to be fixed to the rotary shaft between the seventh pulley and the eighth pulley, and both ends of the pulley connector installed respectively It may include ninth and tenth pulleys, a rubber belt wound around the seventh pulley and the ninth pulley, and a rubber belt wound around the eighth pulley 350 and the tenth pulley.

The moving force transmitting unit is connected to a pulley installed on the motor shaft of the fourth motor through a rubber belt, an eleventh pulley installed at one end of the moving screw, a moving mesh mesh meshing with the moving screw, and spaced apart from the moving screw A sliding guide fixedly installed in the X-axis direction, and a moving shaft moving member fixed to one side of the moving shaft and the moving meshing sphere and slidably connected to the sliding guide to move in the X-axis direction along the sliding guide. can

The winding guide unit includes a sliding guide installed in a non-rotating fixed portion of one side of the rotation shaft via a support, a sliding unit moving in the X-axis direction along the sliding guide, but having one end connected to the end of the moving shaft, and the It may include an induction part installed at the other end of the sliding part so that the coil from the nozzle is wound around the stator.

The distal end of the moving shaft may move in the X-axis direction through the fixing part inside the rotating shaft as the moving shaft moves in the X-axis direction.

The induction part, but facing the stator, the length of the side close to the stator is shorter than the length of the side far from the stator, the upper side and the lower side may be rounded.

An insertion groove into which the stator core can be inserted may be formed on a side of the guide part close to the stator.

According to the present invention having such a configuration, since a plurality of (eg, about 12) stator cores are arranged in a straight line, a coil having a diameter of 1 mm or more (eg, 1.1 mm) can be easily wound on the stator.

Depending on the desired speed and torque, you can easily change the number of turns of the coil or the thickness of the coil, so that you can easily change the performance of the motor.

Since only the stator fixing part needs to be changed according to the stator type, various stators can be wound.

1 is a block diagram of a stator coil winding apparatus according to an embodiment of the present invention.
2 is a diagram illustrating a stator employed in an embodiment of the present invention.
3 is a perspective view showing the overall configuration of a stator coil winding device according to an embodiment of the present invention.
4 and 5 are views for explaining the configuration of the stator transfer unit in the stator coil winding apparatus according to an embodiment of the present invention.
6 and 7 are views illustrating a state in which the stator is mounted on the stator transfer unit and transferred in the X-axis direction.
8 and 9 are views illustrating a state in which the stator is mounted on the stator transfer unit and transferred in the Y-axis direction.
10 is a view for explaining the configuration and operation of the stator fixing unit in the stator transfer unit.
11 to 13 are views for explaining the configuration and operation of the winding guide unit in the stator coil winding apparatus according to the embodiment of the present invention.
14 to 17 are views for explaining the configuration and operation of the winding unit in the stator coil winding apparatus according to an embodiment of the present invention.
18 is a view for explaining the configuration and operation of the tension adjusting unit in the stator coil winding apparatus according to the embodiment of the present invention.
19 is a connection diagram of a stator by a stator coil winding device according to an embodiment of the present invention.
20 is a diagram illustrating a winding sequence in a stator coil winding apparatus according to an embodiment of the present invention.
21 is a view for explaining a winding sequence configuration principle employed in the stator coil winding apparatus according to an embodiment of the present invention.
22 is a view for explaining that tension is maintained when winding according to a winding sequence according to an embodiment of the present invention is performed.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail.

However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In describing the present invention, in order to facilitate the overall understanding, the same reference numerals are used for the same components in the drawings, and duplicate descriptions of the same components are omitted.

1 is a block diagram of a stator coil winding apparatus according to an embodiment of the present invention, FIG. 2 is a view illustrating a stator employed in an embodiment of the present invention, and FIG. 3 is a stator coil according to an embodiment of the present invention It is a perspective view showing the overall configuration of the winding device.

The stator coil winding device according to an embodiment of the present invention can be said to be a winding device for the production of a BLDC motor (a three-phase Y connection method is adopted) used in a cooperative robot developed by the present applicant.

The stator coil winding apparatus according to an embodiment of the present invention includes a stator transfer unit 100 , a winding guide unit 200 , a winding unit 300 , a tension control unit 400 , and a control unit 500 .

The stator transfer unit 100 transfers the stator 10 in which a plurality of (12 in the embodiment of the present invention) stator cores 11 are formed in series in the X-axis direction and the Y-axis direction.

The stator transfer unit 100 transfers the stator 10 to the coil winding area or separates the stator 10 from the coil winding area.

Here, the stator core 11 is configured in an H-shape, and includes an inner frame portion 11a, a coil winding portion 11b, and an outer frame portion 11c. The inner frame portion 11a and the outer frame portion 11c are parallel with the coil winding portion 11b interposed therebetween, and the width of the inner frame portion 11a is shorter than the width of the outer frame portion 11c. A coil (eg, enamel-coated copper wire) is wound around the coil winding unit 11b, and the coil is wound around the coil winding unit 11b by the winding unit 300 guiding the coil introduced from the outside.

After all the coils are wound on the 12 stator cores 11 , the straight stator 10 may be made into an annular shape using a separate jig (not shown) or the like. The stator 10 made in an annular shape as described above will be used in a BLDC motor adopting a three-phase Y-connection method.

The conventional annular (or circular) stator cannot be wound with a thick copper wire having a diameter of about 1 mm or more, but when using the straight-shaped stator 10 as in the embodiment of the present invention, it has a diameter of about 0.6 mm. It can be easily wound with copper wire, a copper wire with a diameter of about 1.1mm.

In the embodiment of the present invention, each stator core 11 may have three layers of coil windings, and seven coil windings may be formed in each of the first and second layers, and one coil winding may be formed in the third layer. there is. Here, the winding sequence of the stator 10 is preset in the control unit 500 . A description of the winding sequence of the stator 10 will be described later.

Meanwhile, the number of windings of the coil or the thickness of the coil may be changed according to a desired speed and torque.

The winding guide unit 200 guides the coil winding of the stator 10 transferred to the coil winding area by the stator transfer unit 100 more smoothly.

The winding unit 300 winds the coil on the stator 10 transferred to the coil winding area by the stator transfer unit 100 . Here, the coil winding will be made according to a predetermined winding sequence of the stator 10 .

The tension adjusting unit 400 adjusts the tension of the coil wound around the stator 10 .

The control unit 500 performs various operations of the stator transfer unit 100, the winding guide unit 200, and the winding unit 300 so that the three-phase Y-connection type coil winding is made on the stator 10 based on a preset winding sequence. to control

That is, the control unit 500 operates the stator transfer unit 100 to transfer the stator 10 (including a plurality of stator cores 11) to the coil winding area, and guide operation of the winding guide unit 200 and the winding unit 300 ) of the three-phase Y-connection type coil winding for all stator cores 11 is controlled to be made smoothly.

On the other hand, after coil winding for the stator 10 is finished, the controller 500 returns the stator 10 to the initial position, the stator transfer unit 100, the winding guide unit 200, and the winding unit 300. control

4 and 5 are views for explaining the configuration of the stator transfer unit in the stator coil winding apparatus according to an embodiment of the present invention, and FIGS. 6 and 7 are views for mounting the stator on the stator transfer unit and transferring the stator in the X-axis direction. 8 and 9 are views illustrating a state in which the stator is mounted on the stator transfer unit and transferred in the Y-axis direction.

The stator transfer unit 100 is installed on the fixed frame 20 in the longitudinal direction (X-axis direction) on the fixed frame 20 at a predetermined distance from the X-axis responsible screw 22 and the X-axis responsible screw 22 . X-axis in charge guide 24 installed in the direction (X-axis direction), is installed on the bottom of the plate-shaped moving frame 26 disposed on the upper surface of the fixed frame 20 to be spaced apart from the fixed frame 20, the X-axis It moves in the longitudinal direction along the in charge guide 24 and the X-axis in charge screw 22 is rotatably engaged and penetrates the X-axis moving part 28 and the upper surface of the moving frame 26 with the X-axis in charge screw 22 The Y-axis in charge screw 42 installed in the other direction (that is, the Y-axis direction), the Y-axis in charge guide 56 fixedly installed on the moving frame 26 at a predetermined distance from the Y-axis in charge screw 42, The Y-axis moving part 58 that is rotatably engaged and penetrates through the in charge screw 42 and moves in the Y-axis direction along the Y-axis in charge guide 56, and the stator 10, and the Y-axis moving part 58 It includes a stator fixing unit 40 coupled to the upper surface of the. It can be seen that the bottom surface of the fixing part plate 60 of the stator fixing part 40 and the upper surface of the Y-axis moving part 58 are coupled.

One end of the X-axis responsible screw 22 is rotatably press-fitted into the first support 30 installed on the fixed frame 20 , and the other end of the X-axis responsible screw 22 is attached to the X-axis moving part 28 . It is press-fitted but rotatably press-fitted through it.

In addition, the first pulley 36 is connected to one end of the X-axis responsible screw 22 , and the first pulley 36 is connected to the second pulley 34 via the rubber belt 38 . The second pulley 34 is connected to the motor shaft of the first motor 32 . The first motor 32 rotates the X-axis responsible screw 22 . The X-axis responsible guide 24 is a guide for holding load and torsion, and holds the movement direction when the X-axis responsible screw 22 rotates.

One end of the Y-axis in charge screw 42 is rotatably press-fitted into the second support member 44 on the moving frame 26 , and the other end of the Y-axis in charge screw 42 has a third support on the moving frame 26 . It is rotatably press-fitted to (46).

In addition, the third pulley 52 is connected to one end of the Y-axis responsible screw 42 , and the third pulley 52 is connected to the fourth pulley 50 via the rubber belt 54 . The fourth pulley 50 is connected to the motor shaft of the second motor 48 . The second motor 48 rotates the Y-axis responsible screw 42 . The Y-axis in charge guide 56 is a guide for holding load and torsion, and holds the direction of movement when the Y-axis responsible screw 42 rotates.

4 to 9, unexplained reference numerals 380 and 382 are coil fixing members for fixing the coil, and the coil fixing member 380 is installed on the rear surface of the fixing part plate 60 of the stator fixing part 40, The coil fixing member 382 is installed on the bottom surface of the fixing part plate 60 of the stator fixing part 40 . If necessary, any one of the two coil fixing members 380 and 382 may be used. The roles of the coil fixing members 380 and 382 will be described in more detail in the detailed description of the winding unit 300 .

The stator transfer unit 100 configured as described above operates when the stator 10 is fixed to the stator fixing unit 40 . When the stator transfer unit 100 is operated, the stator 10 is transferred to the coil winding area by moving the X and Y axes. In the present specification, the coil winding region means a region in which a coil can be wound around the stator core 11 of the stator 10 . Initially, the stator 10 and the winding unit 300 are spaced apart from each other to the extent that the coil cannot be wound. In order to wind the coil around the stator core 11 , the distance between the stator 10 and the winding unit 300 should be close. Accordingly, in order to start winding the coil, first, the stator transfer unit 100 operates to move the stator 10 in the X-axis and Y-axis directions to reduce the distance from the winding unit 300 .

That is, in the case of X-axis movement (transfer) during the transfer to the coil winding area, the X of the stator 10 through the X-axis charge screw 22 , the X-axis charge guide 24 , and the X-axis movement unit 28 . Axial movement is performed. 6 shows a state before the stator 10 is moved in the X-axis direction as being in the initial position, and FIG. 7 shows a state in which the stator 10 moves by a predetermined value in the X-axis direction.

On the other hand, in the case of Y-axis movement (transfer) during the transfer to the coil winding area, the Y of the stator 10 through the Y-axis charge screw 42 , the Y-axis charge guide 56 , and the Y-axis movement unit 528 . Axial movement is performed. 8 shows a state before the stator 10 moves in the Y-axis direction, and FIG. 9 shows a state in which the stator 10 moves by a predetermined value in the Y-axis direction.

In the embodiment of the present invention, the Y-axis movement is performed after the X-axis movement. However, if necessary, the X-axis movement may be performed after the Y-axis movement, or the X-axis movement and the Y-axis movement may be performed simultaneously.

And, since the coil winding is not made on the 12 stator cores 11 at the same time, but the coil winding is made on the stator core 11 according to the sequence according to a preset winding sequence, the stator 10 by the stator transfer unit 100 After reaching the coil winding area, the stator 10 will move (transfer) along the Y-axis until the coil winding is completed.

Thereafter, when all coil windings for the stator 10 are completed, the stator transfer unit 100 operates in the opposite direction to return to the initial position (ie, the initial position).

10 is a view for explaining the configuration and operation of the stator fixing unit in the stator transfer unit.

The stator fixing unit 40 employs a magnetic base operation method, and may fix the stator 10 with a magnet.

The stator fixing part 40 is installed in series (ie, installed in the Y-axis direction) on the fixing part plate 60 coupled to the upper surface of the Y-axis moving part 58, so that the stator locking state and the stator fixing for fixing the stator A plurality of magnet module parts 41a operable in a stator unlocked state for release, and a handle 41b installed on top of each magnet module part 41a to rotate the corresponding magnet module part 41a at intervals of 90 degrees ) is included.

The magnet module part 41a contains a magnet (not shown) for fixing the stator 10 .

That is, when the corresponding magnet module part 41a is rotated by about 90 degrees by manipulating the handle 41b, the magnet pole inside the base is rotated, so that the magnetic force of the base side can be turned on/off.

After all, when the magnetic force of the side (that is, the surface opposite to the stator 10) of the corresponding magnet module part 41a is turned on by rotating the handle 41b in one direction, the stator 10 and the magnet module part ( The opposing surfaces between 41a) are coupled to each other by magnetic force, which is referred to as the stator lock state (see FIG. 10 ). Conversely, by rotating the handle 41b in the other direction (ie, the direction opposite to 90 degrees from one direction), the magnetic force of the side (ie, the side opposite to the stator 10) of the corresponding magnet module part 41a is turned OFF ), the stator 10 is separated from the magnet module part 41a, which is referred to as a stator release state.

In other words, if the handle 41b of the magnet module part 41a is in the same position as in FIG. 3 , the stator fixing part 40 cannot fix the stator because the stator is in the unlocked state. When the handle 41b is rotated in the opposite direction in the state shown in FIG. 3 as shown in FIG. 10, the magnetic force of the side (that is, the side opposite to the stator 10) of the corresponding magnet module part 41a is ON. Thus, the stator 10 and the magnet module part 41a are coupled to each other by magnetic force.

11 to 13 are views for explaining the configuration and operation of the winding guide unit in the stator coil winding apparatus according to an embodiment of the present invention.

The winding guide part 200 is a guide installed on the support 210 fixedly installed on the fixing part plate 60 so that the moving shaft 214 faces downward (that is, toward the lower stator 10). The driving unit 212, the winding unit 300 is connected to the guide members 218 and 220, guide members 218 and 220 for guiding the coil not to be caught in the other stator core when winding the coil for one stator core. It is installed at the lower end of the guide member rotating shafts 222 and 224, and the moving shaft 214 responsible for the rotation of the guide members 218 and 220, and ascends and descends according to the lifting motion of the moving shaft 214, and the guide member 218, and a guide lock 216 responsible for maintaining the open state and maintaining the closed state of the 220 .

Here, the guide driving unit 212 is installed on the stator transfer unit 100 to be spaced apart from the stator 10 at the upper portion of the stator 10 , and the moving shaft 214 is installed to face downward. For example, the guide driving unit 212 is preferably composed of a pneumatic cylinder. The guide driving unit 212 moves the guide locking unit 216 to open/close the guide members 218 and 220 .

The guide member 218 is connected to the guide member rotation shaft 222 , and the guide member 220 is connected to the guide member rotation shaft 224 . The guide members 218 and 220 preferably have a predetermined radius of curvature (eg, about R15 mm) to guide the coil so that the coil is wound around the stator core without being damaged when the coil is wound around the stator core.

The guide lock 216 includes stoppers 226 and 228 for maintaining the open state of the guide members 218 and 220 in the open state and maintaining the closed state when the guide members 218 and 220 are closed. .

In addition, movement space portions 216a and 216b having a predetermined shape through which the stoppers 226 and 228 move are formed in the guide locking portion 216 .

The central portions of the moving spaces 216a and 216b are formed in a curved shape, and the uppermost and lowermost portions of the moving spaces 216a and 216b are formed with different radii of curvature from the radii of curvature of the central portions. That is, the stopper 226 moves along the moving space 216a, and the stopper 228 moves along the moving space 216b.

12, when the stoppers 226 and 228 are positioned at the lowermost portions of the moving space portions 216a and 216b, the guide members 218 and 220 are in an open state, so that the guide members 218 and 220 are moved at a certain angle or more. It can prevent further rise. In the open state of the guide members 218 and 220 , the stator 10 may be moved in the X-axis direction and/or the Y-axis direction.

On the other hand, as shown in FIG. 13, when the stoppers 226 and 228 are positioned at the top of the moving space portions 216a and 216b, the guide members 218 and 220 are in a closed state, so the opening of the guide members 218 and 220 is controlled. can be prevented In the closed state of the guide members 218 and 220 , a coil may be wound (winded) on the stator core 11 .

The lowermost and uppermost portions of the above-described moving space portions 216a and 216b serve as locking grooves, and when external pressure weaker than the pneumatic pressure of the guide driving unit 212 (pneumatic cylinder) is applied to the stoppers 226 and 228, the stoppers 226, 228 prevents it from escaping from the top or bottom of the moving spaces 216a, 216b.

14 to 17 are views for explaining the configuration and operation of the winding unit in the stator coil winding apparatus according to an embodiment of the present invention.

The winding unit 300 passes through the supports 310 and 312 spaced apart from each other on the fixed frame 20 and is installed in the longitudinal direction (X-axis direction) of the fixed frame 20. The rotating shaft 314 and the rotating shaft 314 are provided. In the longitudinal direction (X-axis) of the fixed frame 20 through the rotating arm 316, the rotating arm 316 in which the nozzle 318 from which the coil 328 finally comes out is formed, and the rotating shaft 314 is fixedly installed on the direction), a moving screw 364 for moving the moving shaft 322 in the X-axis direction, a third motor 324 for generating a force for rotating the rotating shaft 314, the moving shaft ( A fourth motor 326 generating a force to move 322 , a rotational force transmitting unit transmitting a rotational force to the rotating shaft 314 , a moving force transmitting unit transmitting a moving force to the moving shaft 322 , and a rotating shaft 314 ) It is installed on the fixing part 330 installed on one side of the stator 10 and includes a winding induction part for inducing the coil 328 to be wound.

Here, the rotating shaft 314 is installed on the fixed frame 20 and is installed in the X-axis direction to be spaced apart from the stator 10 .

The fixing part 330 supports the winding induction part while being fixed without rotation.

The coil 328 is introduced into the rotating shaft 314 and the moving shaft 322 , and the introduced coil 328 exits through the hole 314a formed in the rotating shaft 314 and flows into the rotating arm 316 . do.

A coil guide groove 316a is formed in the rotary arm 316 , and the coil 328 guided through the coil guide groove 316a passes through the inside of the nozzle 318 . At this time, an idler 316b for allowing the coil 328 to pass through without interference is installed at a portion where the coil 328 is first introduced in the coil guide groove 316a. The coil 328 introduced into the rotary arm 316 may move toward the nozzle 318 without being damaged by the idler 316b. In addition, an idler 318a is installed at the end of the nozzle 318 to allow the coil 328 to pass without interference.

The rotational force transmission unit is wound around the fifth pulley 338 installed on the motor shaft of the third motor 324 , the sixth pulley 340 installed on the rotating shaft 314 , the fifth pulley 338 and the sixth pulley 340 . Jean rubber belt 342, the sixth pulley 340 and the seventh pulley 344 installed on the rotating shaft 314 spaced apart, the eighth pulley 350 installed on the rotating shaft 314 and spaced apart from the seventh pulley 344 , the 7th pulley 344 and the 8th pulley 350, the tee-shaped (T)-shaped pulley connector 356 fixedly installed on the rotation shaft 314 between the pulley 350, the ninth and the ninth and respectively installed at both ends of the pulley connector 356 The tenth pulleys 346 and 352 , the rubber belt 348 wound around the seventh pulley 344 and the ninth pulley 346 , and the rubber belt wound around the eighth pulley 350 and the tenth pulley 352 . (354).

The moving force transmitting unit is connected through a pulley (not shown) installed on the motor shaft of the fourth motor 326 and a rubber belt 370 , and a moving screw 364 passing through the support 366 fixed to the pedestal 374 . ), the 11th pulley 368 installed at one end of the pedestal 374, the moving meshing hole 372 meshed with the moving screw 364, and the pedestal 374 spaced apart from the moving screw 34. The sliding guide 362 fixedly installed in the longitudinal direction (X-axis direction), and one side of the moving shaft 322 and the moving meshing hole 372 are fixed to the sliding guide 362 and slidably connected to the sliding guide 362 ) along the longitudinal direction (X-axis direction) includes a moving shaft moving member 358.

The winding guide unit moves in the longitudinal direction (X-axis direction) along the support 332 installed in the fixing unit 330 , the sliding guide 334 fixed to one side of the support 332 , and the sliding guide 334 , but One end of the sliding portion 336 connected to the end portion 332a of the moving shaft 322 is installed at the other end of the sliding portion 336 , so that the coil 328 from the nozzle 318 is wound on the stator 10 . It includes an induction part 320 that does.

Here, as the moving shaft 322 moves in the X-axis direction, the distal end 322a of the moving shaft 322 passes through the fixed part 330 inside the rotating shaft 314 to move in the X-axis direction.

The induction part 320 faces the stator 10 , but the length (length) of the side close to the stator 10 is shorter than the length (length) of the side farther from the stator 10 . And, the upper and lower surfaces of the induction part 320 are rounded. The reason for doing this is to ensure good coil winding.

In addition, an insertion groove 320a into which the stator core 11 can be inserted is formed on the side close to the stator 10 in the induction part 320 as shown in FIG. 16 .

The induction part 320 is spaced apart from the nozzle 318 .

The winding unit 300 configured as described above operates as follows.

When the stator 10 is moved in the X-axis and Y-axis directions by the stator transfer unit 100 and transferred to the coil winding area, the moving screw 364 is rotated through the fourth motor 326 and the moving force transmitting unit to rotate the moving shaft ( 322) is moved in the X-axis direction. Accordingly, the induction part 320 is moved in the X-axis direction so as to be close to the stator core 11 to be coil wound.

By the movement of the induction part 320 in the X-axis direction, the stator core 11 of the order to be coil wound is inserted into the insertion groove 320a of the induction part 320 as shown in FIG. 17 .

Then, after the operator winds the coil 328 on the coil fixing member 380 or 382 , the operator further fixes the coil 328 with the tool 384 so that it does not loosen. In FIG. 17 , the coil 328 is wound around the coil fixing member 380 , and the coil 328 extends over the coil fixing member 382 . Coil winding for the stator 10 can be made only when the coil 328 is wound to some extent in advance on the coil fixing member 380 or 382 .

Next, the third motor 324 operates to provide a rotational force to the rotational shaft 314 through the rotational force transmitting unit. Accordingly, the rotating shaft 314 is rotated, and the rotating arm 316 fixed to the rotating shaft 314 is rotated along with this.

As the rotary arm 316 rotates, the coil 328 coming out of the nozzle 318 is wound around the stator core 11 while contacting the outer surface of the induction part 320 .

At this time, the rotation direction of the rotary arm 316 may be clockwise (CW) or counterclockwise (CCW) with respect to the stator core 11, which is determined according to the winding sequence.

18 is a view for explaining the configuration and operation of the tension adjusting unit in the stator coil winding apparatus according to the embodiment of the present invention.

The tension adjusting unit 400 adjusts the tension of the coil 328 provided to the winding unit 300 from the bobbin 412, and it is understood that the tension of the coil 328 wound on the stator 10 is adjusted. Do it.

Here, the bobbin 412 is rotatably supported by the support 410 at the rearmost end of the fixed frame 20 .

The tension control unit 400 is installed on the fixed frame 20 from the front of the bobbin 412 and continuously applies friction to the coil 328 coming out of the bobbin 412 to apply a predetermined tension to the coil 328 during winding. It includes a friction part 414 that applies, and a tension maintaining part which is installed on the fixed frame 20 in front of the friction part 414 and pulls the tension of the coil 328 that is momentarily released during winding to maintain the tension.

The friction part 414 is respectively installed on one side of the two cylindrical rubbers 414a and 414b and the two cylindrical rubbers 414a and 414b that are in surface contact with each other and are installed in close contact with each other and the coil 328 passes between them. It includes two plastic plates 414c and 414d, and an adjustment member 414e for adjusting the tension value of the coil 328.

Here, the adjusting member 414e may be formed of a bolt. The thicker the coil 328, the stronger the tension is so that the coil 328 does not twist during winding.

The tension maintaining part is installed at both ends of the torsion spring 420 installed on the fixed frame 20 to be spaced apart from the friction part 414 by a predetermined distance, the lever 423 of a predetermined length connected to the torsion spring 420, and the lever 423. It includes first and second idlers 422 , 424 .

The tension maintaining unit having the above-described configuration is installed at one end of the support 418 having a predetermined length fixedly installed on the fixing frame 20 by the support 416 . At the other end of the support 418 , a third idler 426 for guiding the coil 328 maintained in tension in the tension maintaining unit to the winding unit 300 is installed.

Eventually, the coil 328 exiting the bobbin 412 passes between the two plastic plates 414c, 414d of the friction portion 414, through the first and second idlers 422, 424, and then through the third idler 426. It enters the winding unit 300 through the.

19 is a connection diagram of a stator by the stator coil winding apparatus according to an embodiment of the present invention, and FIG. 20 is a view showing a winding sequence in the stator coil winding apparatus according to an embodiment of the present invention.

An embodiment of the present invention is to wind a coil on a stator used in a BLDC motor adopting a three-phase Y connection method. In the embodiment of the present invention, the winding condition of the stator is that the coil tension must not be released during winding, and the coil must not be cut at once without cutting the coil. It should be possible to wind all 12 stator cores 10 in the order of coil winding. In addition, the passing line, three-phase line, and neutral line should be located on one side, and U-V-W should come from adjacent places.

Accordingly, let U(1, 2, 7, 8)-V(3, 4, 9, 10)-W(5, 6, 11, 12) be used.

Accordingly, the connection state of the stator according to the embodiment of the present invention may be as shown in FIG. 19 .

Here, the stator cores 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 while going from left to right, the 12 stator cores 11 of the stator 10 (see FIG. 2 ) , the winding sequence including the coil winding order and the coil winding direction for each stator core is the same as in FIG. 20 .

That is, the coil winding order of the stator core No. 1 is 2, and the coil winding direction is counterclockwise (CCW). The coil winding order of stator core #2 is 1, and the winding direction is clockwise (CW). The winding order of the 3 stator core is 12, and the winding direction is counterclockwise (CCW). The winding order of the 4th stator core is 11, and the winding direction is clockwise (CW). The winding order of the 5th stator core is 7, and the winding direction is clockwise (CW). The winding order of the 6th stator core is 8, and the winding direction is counterclockwise (CCW). The winding order of the 7th stator core is 4, and the winding direction is clockwise (CW). The coil winding order of the 8th stator core is 3, and the winding direction is counterclockwise (CCW). The winding order of the 9th stator core is 10, and the winding direction is clockwise (CW). The winding order of the 10th stator core is 9, and the winding direction is counterclockwise (CCW). The winding order of the 11th stator core is 5, and the winding direction is counterclockwise (CCW). The winding order of the 12th stator core is 6, and the winding direction is clockwise (CW).

The winding sequence as described above is stored in advance in the control unit 500 .

On the other hand, looking at the polarities of the stator cores after the coils are wound around the 12 stator cores by the above-described winding sequence, it may be shown in Table 1 below.

UV

N
S
N
S
-
-
S
N
S
N
-
-
UW

N
S
-
-
S
N
S
N
-
-
N
S
WV

-
-
N
S
N
S
-
-
S
N
S
N

Of course, if necessary, it may be considered to reverse the winding direction of the coils of each of the above-described stator cores. That is, the winding direction of the coil of the No. 1 stator core is clockwise (CW), the winding direction of the coil of the No. 2 stator core is counterclockwise (CCW), and the winding direction of the coil of the No. 3 stator core is clockwise (CW). ), the winding direction of the stator core 4 is counterclockwise (CCW), the winding direction of the stator core 5 is counterclockwise (CCW), and the winding direction of the stator core 6 is clockwise. direction (CW), the winding direction of the stator core 7 is counterclockwise (CCW), the winding direction of the stator core 8 is clockwise (CW), and the winding direction of the stator core 9 is the coil winding direction. is counterclockwise (CCW), the winding direction of the stator core 10 is clockwise (CW), the winding direction of the stator core 11 is clockwise (CW), and the coil of the stator core 12 is The winding direction can be made counterclockwise (CCW). In this case, it should be considered so that the tension is not released even for the winding order of the coils of each stator core.

21 is a view for explaining a winding sequence configuration principle employed in the stator coil winding apparatus according to an embodiment of the present invention.

If, as shown in the figure on the left in FIG. 21, it is assumed that stator core 4 should be wound after winding stator 2 after winding stator core 1 and then stator core 4 with the coil in direct contact with stator core 3 will go to

That is, even though the winding order of the coil is not turned, since the coil passes while touching the stator core No. 3, the winding shape may be different from other stator cores.

Therefore, in the embodiment of the present invention, the winding starts from the second stator core as shown in the right figure of FIG. If the winding starts from the second stator core, when the fourth stator core is wound after winding the first stator core, the coil does not come into contact with the third stator core.

22 is a view for explaining that tension is maintained when winding according to a winding sequence according to an embodiment of the present invention is performed.

As shown in (a) of FIG. 22 , after winding the stator core No. 2 and then winding the stator core No. 7, when the No. 7 stator core is wound in the clockwise direction (CW), the tension is released.

Alternatively, it can be seen that the tension is maintained when the No. 8 stator core is wound counterclockwise (CCW) after winding the No. 1 stator core after winding the No. 2 stator core as shown in (b) of FIG. 22 .

Therefore, in the case of U-phase, if the winding is performed in the order of No. 2 stator core (CW) -> No. 1 stator core (CCW) -> No. 8 stator core (CCW) -> No. 7 stator core (CW), the tension is maintained while winding be able to do

Accordingly, in the case of the other V phases (3, 4, 9, 10) and W phases (5, 6, 11, 12), if the above-described winding sequence is followed, the coil can be wound while maintaining the tension. That is, if the V phase is wound in the order of No. 10 stator core (CCW) -> No. 9 stator core (CW) -> No. 4 stator core (CW) -> No. 3 stator core (CCW), the tension is maintained while winding be able to do For W phase, if you wind in the order of stator core 11 -> stator core 12 (CW) -> stator core 5 (CW) -> stator core 6 (CCW), you can wind while maintaining the tension. there will be

As described above, the best embodiment has been disclosed in the drawings and the specification. Although specific terms are used herein, they are only used for the purpose of describing the present invention, and are not used to limit the meaning or the scope of the present invention described in the claims. Therefore, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

100: stator transfer unit
200: winding guide unit
300: winding part
400: tension control unit
500: control unit

Claims (11)

a stator transfer unit for transferring a linear stator including a plurality of stator cores in the X-axis direction and the Y-axis direction;
a winding guide part for guiding the coil winding of the transferred stator;
a winding unit for winding a coil around the stator;
a tension adjusting unit for adjusting the tension of the coil wound around the stator; and
A control unit for controlling the operations of the stator transfer unit, the winding guide unit, and the winding unit so that the three-phase Y-connection type coil winding is made in the stator based on a preset winding sequence;
The winding part includes a rotation shaft installed in the X-axis direction to be spaced apart from the stator, a rotation arm fixed to the rotation shaft and having a nozzle from which a coil emerges at an end, a first moving shaft moving in the X-axis direction inside the rotation shaft , a moving screw for moving the first moving shaft in the X-axis direction, a third motor generating a force for rotating the rotating shaft, a fourth motor generating a force for moving the first moving axis, and transmitting a rotational force to the rotating shaft a rotational force transmitting unit, a moving force transmitting unit transmitting a moving force to the first moving shaft, and a winding inducing unit inducing a coil to be wound around the stator,
The winding guide part is installed in the stator transfer part to be spaced apart from the stator in the upper part of the stator, and a guide driving part installed so that a second moving axis faces downward, a coil for any one stator coil of the stator in the winding part A guide member for guiding the coil not to be caught in other stator cores during winding, and a guide member installed at the lower end of the second moving shaft to ascend and descend according to the lifting motion of the second moving shaft to maintain the open state and the closed state of the guide member Includes a guide lock in charge,
The guide locking unit includes a stopper that maintains an open state in an open state of the guide member and maintains a closed state in a closed state of the guide member, wherein the guide lock includes a moving space in which the stopper moves The stator coil winding device, characterized in that the central portion of the moving space is formed in a curved shape, and the uppermost and lowermost portions of the moving space are formed with a radius of curvature different from the radius of curvature of the central portion. The method according to claim 1,
The coil is introduced into the rotating shaft and the first moving shaft, and the introduced coil exits through a hole formed in the rotating shaft and flows into the rotating arm. 3. The method according to claim 2,
A coil guide groove is formed in the rotary arm, and the coil introduced into the rotary arm passes through the inside of the nozzle through the coil guide groove. 4. The method according to claim 3,
A stator coil winding device, characterized in that an idler is installed at a portion where the coil is first introduced in the coil guide groove. 5. The method according to claim 4,
Stator coil winding device, characterized in that the idler is installed at the end of the nozzle. The method according to claim 1,
The rotational force transmission unit,
A fifth pulley installed on the motor shaft of the third motor, a sixth pulley installed on the rotation shaft, a rubber belt wound around the fifth pulley and the sixth pulley, and a seventh pulley installed on the rotation shaft to be spaced apart from the sixth pulley , an eighth pulley installed on the rotation shaft to be spaced apart from the seventh pulley, a pulley connector installed to be fixed to the rotation shaft between the seventh pulley and the eighth pulley, ninth and tenth respectively installed at both ends of the pulley connector A stator coil winding device comprising: a pulley; a rubber belt wound around the seventh pulley and the ninth pulley; and a rubber belt wound around the eighth pulley (350) and the tenth pulley. The method according to claim 1,
The moving force transmitting unit,
An eleventh pulley connected to a pulley installed on the motor shaft of the fourth motor through a rubber belt and installed at one end of the moving screw, a moving meshing mesh meshed with the moving screw, and fixed in the X-axis direction to be spaced apart from the moving screw It characterized in that it comprises a sliding guide installed, and a moving shaft moving member fixed to one side of the first moving shaft and the moving meshing sphere and slidably connected to the sliding guide to move in the X-axis direction along the sliding guide. Stator coil winding device. The method according to claim 1,
The winding induction unit,
A sliding guide installed in a non-rotating fixed part of one side of the rotation shaft via a support, a sliding part moving in the X-axis direction along the sliding guide but having one end connected to the end of the first moving shaft, and the other end of the sliding part The stator coil winding device installed in the stator coil, characterized in that it comprises an induction part for causing the coil from the nozzle to be wound on the stator. 9. The method of claim 8,
The end of the first moving shaft,
The stator coil winding device, characterized in that as the first moving shaft moves in the X-axis direction, it passes through the fixing part inside the rotating shaft and moves in the X-axis direction. 9. The method of claim 8,
The induction part,
The stator coil winding device, characterized in that the side facing the stator, the length of the side closer to the stator is shorter than the length of the side farther from the stator, and the upper and lower surfaces are rounded. 11. The method of claim 10,
The stator coil winding device, characterized in that an insertion groove into which the stator core can be inserted is formed on a side of the induction part close to the stator.

Images