Stator coil winding apparatus for vehicle motor

Abstract

Disclosed is a stator coil winding apparatus for a vehicle motor, comprising a coil supply unit (110), a first coil feeding unit (120), a coil tension unit (130) operating based on a tension feedback signal, a first tension buffer unit (140), a second coil feeding unit (150), a nozzle unit (160), a coil winding unit (170), and a forming unit (180), wherein a flat stator coil bobbin (20) is rotated without a vertical load imbalance so as to align and wind a flat coil (10) without twisting.

Description

Stator coil winding device for vehicle motor

[0001] The present invention relates to a stator coil winding device for a vehicle motor, which rotates a flat stator coil bobbin without vertical bias through a synchronous built-in spindle motor, thereby precisely aligning the flat coil without distortion and winding it in multiple layers.

[0002] Recently, methods of using flat coils with a square cross-section have been actively explored, and such flat coils can reduce the empty space between coils and increase the space factor compared to annular coils due to their square cross-section shape, and are thus being used as stator coils for drive motors of eco-friendly vehicles requiring high-speed rotation, such as electric vehicles, thereby increasing motor efficiency.

[0003] Meanwhile, as illustrated in FIG. 10, a conventional stator coil winding device includes a flat stator coil bobbin (32) clamped to upper and lower bobbin chucks (31) on which a flat coil is wound, an upper winding rotation part (33) and a lower winding rotation part (34) that rotate the flat stator coil bobbin (32), a winding drive part (35) composed of a servo motor, a coupling (36) extended from the winding drive part (35), and a timing belt (37) respectively connected to the pulleys at the upper and lower ends of the coupling (36), so that the rotational force of a single-configuration servo motor is transmitted to the upper winding rotation part (33) and the lower winding rotation part (34) through the coupling (36), which may cause an upper and lower biased load, causing a problem in that the flat coil is twisted and wound, thereby deteriorating the winding quality. there is.

[0004] Accordingly, a technology is required to precisely align the flat coil without distortion by rotating the stator coil bobbin in conjunction without vertical bias.

[0005] Patent Document 1: Korean Patent Publication No. 10-2511276 (Square coil and core for axial flux motor, March 20, 2023)

[0006] Patent Document 2: (Patent Document 2) Korean Patent Publication No. 10-2023-0170382 (Flat-shaped coil flattening system and method thereof, December 19, 2023)

[0007] The technical problem to be achieved by the present invention is to provide a stator coil winding device for a vehicle motor, which can precisely align the flat coils without distortion and wind them in multiple layers by rotating the flat stator coil bobbin in conjunction with a synchronous built-in spindle motor without any upper or lower bias load.

[0008] In order to achieve the above-described object, an embodiment of the present invention comprises: a coil supply unit for supplying a flat coil wound on a supply bobbin; a first coil feeding unit for switching the rolling direction of the flat coil supplied from the coil supply unit and supplying it; a coil tension unit for controlling the tension of the flat coil supplied from the first coil feeding unit through a tension feedback signal to maintain it at a constant level; a first tension buffer unit formed at a rear end of the coil tension unit for buffering the tension of the flat coil according to the supply speed of the coil supply unit; a second coil feeding unit formed at a rear end of the first tension buffer unit for measuring the tension of the flat coil, generating the tension feedback signal, and feeding it back to the coil tension unit; a nozzle unit for controlling the supply position of the flat coil supplied from the second coil feeding unit; The present invention provides a stator coil winding device for a vehicle motor, comprising: a coil winding unit that winds the flat coil supplied from the nozzle unit onto a flat stator coil bobbin, and rotates the flat stator coil bobbin by providing the same rotational force to the upper and lower ends thereof through a synchronous built-in spindle motor, thereby winding the flat coil without an upper or lower uneven load; and a forming unit that forms the end of the flat coil wound on the flat stator coil bobbin into a specific shape.

[0009] Here, the coil supply unit may be composed of a supply bobbin on which the flat coil is wound, a supply motor that rotates the supply bobbin, and a coupling that connects the supply bobbin and the supply motor.

[0010] In addition, the first coil feeding section is configured with a first feeding roller that winds the flat portion of the flat coil in a lying state, and a second feeding roller that is formed at the rear end of the first feeding roller and rotates in a direction orthogonal to the rotational direction of the first feeding roller so that the blade portion of the flat coil is wound in a straight state, so that the rolling direction of the flat coil can be switched and supplied.

[0011] In addition, the device may further include a second tension buffer unit formed between the coil supply unit and the first coil feeding unit to buffer the tension of the flat coil according to the supply speed of the coil supply unit.

[0012] In addition, the second coil feeding unit may be configured with a pair of third and fourth feeding rollers at the front and rear, through which the flat coil is supplied in close contact with the upper surface, and a load cell roller formed between the third and fourth feeding rollers, through which the evaluation coil is supplied in close contact with the lower surface, and which measures the tension amount of the flat coil between the third and fourth feeding rollers, and the coil tension unit may be configured with a load cell indicator that displays the tension amount, a powder brake controller that receives the tension amount from the load cell indicator, and a powder brake roller that rotates or stops according to the tension amount transmitted from the powder brake controller.

[0013] In addition, the coil winding part may be configured with a lower chuck on which the lower end of the flat stator coil bobbin is fixed, an upper chuck that slides up and down to pressurize and fix the upper end of the flat stator coil bobbin, a lower cross roller bearing that guides the rotation of the lower chuck, a lower frame on which the lower cross roller bearing is formed, a lower pulley coupled to the rotational axis of the lower chuck, an upper cross roller bearing that guides the rotation of the upper chuck, an upper frame on which the upper cross roller bearing is formed, an upper pulley coupled to the rotational axis of the upper chuck, a synchronous built-in spindle motor that is connected to the lower pulley and the upper pulley by a timing belt to provide a rotational force synchronized at both ends, and an encoder that detects the rotational speed of the synchronous built-in spindle motor.

[0014] In addition, the coil winding section further includes a pair of first guide vanes that move up and down in conjunction with each other while facing the long sides of the flat stator coil bobbin, and a pair of second guide vanes that move up and down in conjunction with each other while facing the short side of the flat stator coil bobbin, and the pair of first guide vanes and the pair of second guide vanes maintain a gap equal to the blade width of the flat coil so as to repeatedly guide the flat coil up and down on the flat stator coil bobbin to wind it in multiple layers.

[0015] Additionally, the nozzle unit may include a winding detection sensor that detects the presence and length of the flat coil.

[0016] According to the present invention, a flat stator coil bobbin is rotated in conjunction with a synchronous built-in spindle motor without an upper or lower bias load, thereby precisely aligning the flat coils without distortion and winding them in multiple layers, maintaining the coaxial rigidity of the spindle shaft of the synchronous built-in spindle motor in a balanced manner to increase durability, and making the synchronous built-in spindle motor easy to detach, thereby making the replacement and maintenance of the synchronous built-in spindle motor easier.

[0017] Fig. 1 is a schematic diagram showing a stator coil winding device of a vehicle motor according to an embodiment of the present invention.

[0018] Fig. 2 is a front view of the stator coil winding device of the vehicle motor of Fig. 1.

[0019] Fig. 3 is a side view of the stator coil winding device of the vehicle motor of Fig. 1.

[0020] Fig. 4 is an exploded view of the coil winding part of the stator coil winding device of the vehicle motor of Fig. 1.

[0021] Fig. 5 is an exploded view of the coil winding part of the stator coil winding device of the vehicle motor of Fig. 1.

[0022] Fig. 6 illustrates a flat stator coil bobbin of a stator coil winding device of a vehicle motor of Fig. 1.

[0023] Fig. 7 illustrates a synchronous built-in spindle motor of a stator coil winding device of a vehicle motor of Fig. 1.

[0024] Fig. 8 illustrates a nozzle section of a stator coil winding device of a vehicle motor of Fig. 1.

[0025] Fig. 9 illustrates a coil winding section of a stator coil winding device of a vehicle motor of Fig. 1.

[0026] Fig. 10 illustrates a stator coil winding device of a vehicle motor according to the prior art.

[0027] <Explanation of symbols>

[0028] 10: Flat coil 11: Flat part

[0029] 12: Blade 20: Square stator coil bobbin

[0030] 21: First side 22: Second side

[0031] 23: Corner 24: Bottom cover

[0032] 25: Top cover 110: Coil supply section

[0033] 111: Supply bobbin 112: Supply motor

[0034] 113: Coupling 120: First coil feeding part

[0035] 121: First feeding roller 122: Second feeding roller

[0036] 130: Coil tension section 131: Powder brake roller

[0037] 140: First tension buffer section 141: Tension buffer roller

[0038] 142: Guide block 143: Guide bar

[0039] 150: Second coil feeding section 151: Third feeding roller

[0040] 152: 4th feeding roller 153: Load cell roller

[0041] 160: Nozzle section 170: Coil winding section

[0042] 171: Lower jaw 172: Upper jaw

[0043] 173: Lower cross roller bearing 174: Lower frame

[0044] 175: Lower pulley 176: Upper cross roller bearing

[0045] 177: Top frame 178: Top pulley

[0046] 179: Synchronous built-in spindle motor 180: Forming part

[0047] 190: Second tension buffer section 191: Tension buffer roller

[0048] 192: Guide block 193: Guide bar

[0049] Hereinafter, an embodiment of the present invention having the above-described features will be described in more detail with reference to the attached drawings.

[0050] A stator coil winding device of a vehicle motor according to an embodiment of the present invention comprises: a coil supply unit (110) for supplying a flat coil (10) wound on a supply bobbin (111); a first coil feeding unit (120) for switching the rolling direction of the flat coil (10) supplied from the coil supply unit (110) and supplying it; a coil tension unit (130) for controlling the tension of the flat coil (10) supplied from the first coil feeding unit (120) through a tension feedback signal to maintain it at a constant level; a first tension buffer unit (140) formed at the rear end of the coil tension unit (130) for buffering the tension of the flat coil (10) according to the supply speed of the coil supply unit (110); and a first tension buffer unit (140) formed at the rear end of the first tension buffer unit (140) for measuring the tension of the flat coil (10) and generating a tension feedback signal to thereby measure the tension of the flat coil (10). The main point is to include a second coil feeding unit (150) that feeds back to a tension unit (130), a nozzle unit (160) that controls the supply position of a flat coil (10) supplied from the second coil feeding unit (150), a coil winding unit (170) that winds the flat coil (10) supplied from the nozzle unit (160) on a flat stator coil bobbin (20) by providing the same rotational force to the upper and lower ends of the flat stator coil bobbin (20) through a synchronous built-in spindle motor (179) to rotate it without an upper and lower uneven load, and a forming unit (180) that forms the end of the flat coil (10) wound on the flat stator coil bobbin (20) into a specific shape, thereby rotating the flat stator coil bobbin (20) without an upper and lower uneven load and winding the flat coil (10) in an aligned manner without distortion. Do it.

[0051] Hereinafter, with reference to FIGS. 1 to 9, the stator coil winding device of the vehicle motor having the above-described configuration will be specifically described as follows.

[0052] First, the coil supply unit (110) supplies a flat coil (10) wound on a supply bobbin (111) to the first coil feeding unit (120), that is, precisely controls the amount of release of the supply bobbin (111) in accordance with the winding speed of the flat coil (10) by the coil winding unit (170), and through a detection sensor (not shown), the remaining amount of the flat coil (10) can be checked and the replacement time can be identified.

[0053] Here, the flat coil (10) has a rectangular cross-sectional structure consisting of a flat portion (11) and a blade portion (12), as illustrated in FIG. 2, and can be wound on a supply bobbin (111) in the rolling direction of the flat portion (11) and supplied to the first coil feeding portion (120).

[0054] For example, referring to FIG. 2, the coil supply unit (110) may be composed of a supply bobbin (111) on which a flat coil (10) is wound, a supply motor (112) that rotates the supply bobbin (111), i.e., a servo motor and a reducer, and a coupling (113) that connects the supply bobbin (111) and the supply motor (112).

[0055] Next, the first coil feeding unit (120) changes the rolling direction of the flat coil (10) supplied from the coil supply unit (110) so that it is aligned without being twisted and supplied to the coil tension unit (130).

[0056] Specifically, referring to FIGS. 2 and 3, the first coil feeding unit (120) is composed of a first feeding roller that winds the flat portion (11) of the flat coil (10) in a lying state, and a second feeding roller that is formed at the rear end of the first feeding roller and rotates in a direction orthogonal to the rotational direction of the first feeding roller so that the blade portion (12) of the flat coil (10) is wound in a straight state, thereby enabling the flat coil (10) to be supplied by switching the rolling direction.

[0057] Next, the coil tension unit (130) controls the tension of the flat coil (10) supplied from the first coil feeding unit (120) through a tension feedback signal generated and fed back by the second coil feeding unit (150) to maintain it at a certain level, for example, 6 kgf to 12 kgf, thereby enabling the flat coil (10) to be wound with a uniform thickness on the coil winding unit (170) and preventing an overload from being applied to the synchronous built-in spindle motor (179) of the coil winding unit (170).

[0058] Specifically, the coil tension unit (130) may be composed of a load cell indicator (not shown) that displays the amount of tension, a powder brake controller (not shown) that receives the amount of tension from the load cell indicator, and a powder brake roller (131) that rotates or stops according to the amount of tension transmitted from the powder brake controller to supply or temporarily stop the flat coil (10).

[0059] That is, according to the tension feedback signal, the powder brake roller (131) can be rotated or stopped to control the tension of the flat coil (10) and maintain it at a certain level.

[0060] Next, the first tension buffer unit (140) is formed at the rear end of the coil tension unit (130) and buffers the tension of the flat coil (10) according to the supply speed of the flat coil (10) by the coil supply unit (110), so that the tension of the flat coil (10) can be maintained at a constant level in response to a relatively fast supply speed or a relatively slow supply speed that is outside a preset range.

[0061] Accordingly, when winding a flat coil (10) by rotation of a flat stator coil bobbin (20) as in FIG. 6, the tension of the flat coil (10) may be different depending on each winding for the first side (21) corresponding to the long side and the second side (22) and the corner (23) corresponding to the cross-section, and the different tensions can be maintained at a constant level through the coil tension unit (130) and the first tension buffer unit (140), so that the flat coil (10) can be wound on the flat stator coil bobbin (20) with a constant tension.

[0062] Meanwhile, referring to FIG. 3, a second tension buffer unit (190) is further included, which is formed between the coil supply unit (110) and the first coil feeding unit (120) and buffers the tension of the flat coil (10) according to the supply speed of the coil supply unit (110), so that the second tension buffer unit (190) buffers the tension of the flat coil (10) according to the supply speed of the flat coil (10) by the coil supply unit (110), so that the tension of the flat coil (10) can be maintained at a constant level in response to a relatively fast supply speed or a relatively slow supply speed that is outside a preset range.

[0063] Specifically, as illustrated in FIGS. 2 and 3, the first tension buffer unit (140) and the second tension buffer unit (190) each include a tension buffer roller (141, 191) having a flat coil (10) wound thereon, a guide block (142, 192) coupled to a fixed shaft of the tension buffer roller (141, 191), a guide bar (143, 193) guiding the forward and backward sliding of the guide block (142, 192), a first sensor (not shown) detecting the first end sliding position of the guide block (142, 192), a second sensor (not shown) detecting the second end sliding position of the guide block (142, 192), and a pneumatic cylinder (not shown) pressurizing the guide block (142, 192) with a constant air pressure from the first end sliding position to the second end sliding position. It is composed of a regulator (not shown) that applies a constant pneumatic pressure to the pneumatic cylinder, and when the guide block (142, 192) is detected by the first sensor, the supply speed of the coil supply unit (110) is relatively increased, and when the guide block (142, 192) is detected by the second sensor, the speed of the coil supply unit (110) is relatively decreased, thereby buffering the tension of the flat coil (10).

[0064] Next, the second coil feeding unit (150) is formed at the rear end of the first tension buffer unit (140) to measure the tension of the passing flat coil (10) and generate a tension feedback signal to feed it back to the coil tension unit (130) in real time.

[0065] Specifically, as illustrated in FIG. 2, the second coil feeding section (150) may be configured with a pair of third feeding rollers (151) and fourth feeding rollers (152) formed in the front and rear, through which the flat coil (10) is supplied in close contact with the upper surface, and a load cell roller (153) formed between the third feeding roller (151) and the fourth feeding roller (152), through which the flat coil (10) is supplied in close contact with the lower surface, and which measures the tension amount of the flat coil (10) between the third feeding roller (151) and the fourth feeding roller (152).

[0066] Accordingly, the load cell roller (153) can be raised and lowered according to the tension of the flat coil (10) passing between the third feeding roller (151) and the fourth feeding roller (152) to generate a tension feedback signal.

[0067] Next, the nozzle unit (160) is configured to ascend and descend to control the supply position of the flat coil (10). For example, referring to FIGS. 1 and 8, the upper and lower supply positions of the coil winding unit (170) of the flat coil (10) supplied from the second coil feeding unit (150) to the flat stator coil bobbin (20) are controlled, and when winding is completed, the flat coil (10) is wound on the flat stator coil bobbin (20) to ascend or descend, thereby allowing the flat coil (10) to be wound in multiple layers.

[0068] That is, the nozzle section (160) can supply the flat section (11) of the flat coil (10) whose rolling direction has been changed by the first coil feeding section (120) to the coil winding section (170) so that it is wound in close contact with the flat stator coil bobbin (20).

[0069] Meanwhile, although not shown, the nozzle unit (160) includes a winding detection sensor that detects the presence and length of the flat coil (10), so that when the flat coil (10) is not detected or the winding of the flat coil (10) of a preset length for the flat stator coil bobbin (20) is completed, the operation of the coil supply unit (110) and the coil winding unit (170) can be stopped and the flat stator coil bobbin (20) can be replaced.

[0070] Next, the coil winding unit (170) winds the flat coil (10) supplied from the nozzle unit (160) onto the flat stator coil bobbin (20) at a speed of 300 rpm, and provides the same rotational force to the upper and lower ends of the flat stator coil bobbin (20) through a synchronous built-in spindle motor (179), thereby rotating the flat stator coil bobbin (20) without an upper and lower uneven load, thereby winding the flat coil (10).

[0071] Specifically, as illustrated in FIGS. 4 to 6, the coil winding part (170) includes a lower chuck (171) that clamps the lower part of the flat stator coil bobbin (20), i.e., the lower cover (24), so that it is seated and fixed, an upper chuck (172) that slides up and down to clamp the upper part of the flat stator coil bobbin (20), i.e., the upper cover (25), so that it is pressurized and fixed, a lower cross roller bearing (173) that guides the rotation of the rotation shaft coupled to the lower chuck (171), a lower frame (174) on which the lower cross roller bearing (173) is formed, a lower pulley (175) that is coupled to the rotation shaft of the lower chuck (171), an upper cross roller bearing (176) that guides the rotation of the rotation shaft coupled to the upper chuck (172), and an upper frame (177) on which the upper cross roller bearing (176) is formed. It may be composed of an upper pulley (178) coupled to the rotation axis of the upper chuck (172), a synchronous built-in spindle motor (179) connected to the lower pulley (175) and the upper pulley (178) by a timing belt (T) to provide a synchronous rotational force to both ends, and an encoder (not shown) that detects the rotational speed of the synchronous built-in spindle motor (179).

[0072] Through this structure, referring to FIG. 5, the lower cover (24) of the stator coil bobbin (20) is fixed by being placed on the lower chuck (171) (a), the upper chuck (172) is lowered to pressurize and fix the upper cover (25), and the starting end of the flat coil (10) is placed at the winding start position of the stator coil bobbin (20), and then the flat coil (10) can be wound by the rotational force transmitted from the synchronous built-in spindle motor (179).

[0073] Accordingly, a synchronous built-in spindle motor (179) is vertically arranged between the lower frame (174) and the upper frame (177), and the same rotational force is transmitted through a timing belt (T) via a pulley (179b) coupled to a spindle shaft (179a) extended at each end, thereby synchronizing the rotation of the lower chuck (171) and the upper chuck (172), thereby precisely aligning and winding a flat coil (10) on the stator coil bobbin (20) without an eccentric load between the upper and lower ends, and maintaining the coaxial rigidity of the spindle shaft (179a) in a balanced manner, and making it easy to separate the synchronous built-in spindle motor (179) from the lower frame (174) and the upper frame (177), thereby making it easier to replace and maintain the synchronous built-in spindle motor (179).

[0074] In addition, by applying a lower cross roller bearing (173) and an upper cross roller bearing (176) consisting of a rotatable inner ring and a fixed outer ring, the rotation of the lower chuck (171) and the upper chuck (172) can be stably guided, while the durability and rigidity can be increased in opposition to the high-speed rotation of the lower chuck (171) and the upper chuck (172).

[0075] Meanwhile, as illustrated in FIG. 7, the synchronous built-in spindle motor (179) is composed of a spindle shaft (179a), a housing (179c), a bearing (179d) that guides the rotation of the spindle shaft (179a), a built-in motor (179e), an encoder (not shown) that measures the rotation of the spindle shaft (179a), and an encoder cable (179f) connected to the encoder, so that the spindle shaft (179a) can be rotated at a maximum of 8,000 rpm through the built-in motor (179e) to synchronize the rotation of the lower chuck (171) and the upper chuck (172).

[0076] Meanwhile, as illustrated in FIGS. 5, 6 and 9, the coil winding section (170) further includes a pair of first guide vanes (171a) that move up and down in conjunction with each other on the first side (21) corresponding to the long sides of the flat stator coil bobbin (20), and a pair of second guide vanes (171b) that move up and down in conjunction with each other on the second side (22) corresponding to the short side of the flat stator coil bobbin (20), and the pair of first guide vanes (171a) and the pair of second guide vanes (171b) maintain a gap (G) equal to the blade width of the flat coil (10) so as to sequentially align the flat coil (10) without warping and wind it in multiple layers.

[0077] Next, the forming part (180) forms the end of the flat coil (10) wound on the flat stator coil bobbin (20) into a specific shape.

[0078] Meanwhile, another embodiment of the present invention provides a flat stator coil wound by the stator coil winding device of the aforementioned vehicle motor.

[0079] Therefore, by the configuration of the stator coil winding device of the vehicle motor as described above, the synchronous built-in spindle motor can be used to rotate the flat stator coil bobbin without any upper and lower uneven load, thereby precisely aligning the flat coils without distortion and winding them in multiple layers, and the coaxial rigidity of the spindle shaft of the synchronous built-in spindle motor can be maintained in a balanced manner to increase durability, and the synchronous built-in spindle motor can be easily detached, thereby making replacement and maintenance of the synchronous built-in spindle motor easier.

[0080] The embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

Claims

1. A coil supply section that supplies a flat coil wound on a supply bobbin; A first coil feeding unit that changes the rolling direction of the flat coil supplied from the coil supply unit and supplies it; A coil tension unit that controls the tension of the flat coil supplied from the first coil feeding unit through a tension feedback signal to maintain it at a certain level; A first tension buffer unit formed at the rear end of the coil tension unit and buffering the tension of the flat coil according to the supply speed of the coil supply unit; A second coil feeding unit formed at the rear end of the first tension buffer unit, which measures the tension of the flat coil, generates the tension feedback signal, and feeds it back to the coil tension unit; A nozzle unit that controls the supply position of the flat coil supplied from the second coil feeding unit; A coil winding unit that winds the flat coil supplied from the nozzle unit onto a flat stator coil bobbin, and rotates the flat stator coil bobbin by providing the same rotational force to the upper and lower ends of the flat stator coil bobbin through a synchronous built-in spindle motor, thereby winding without an upper and lower uneven load; and A forming part for forming the end of the flat coil wound on the flat stator coil bobbin into a specific shape; Stator coil winding device for a vehicle motor.

2. In paragraph 1, The coil supply unit is characterized in that it is composed of a supply bobbin on which the flat coil is wound, a supply motor that rotates the supply bobbin, and a coupling that connects the supply bobbin and the supply motor. Stator coil winding device for a vehicle motor.

3. In paragraph 1, The first coil feeding section is characterized in that it is composed of a first feeding roller that winds the flat portion of the flat coil in a lying state, and a second feeding roller that is formed at the rear end of the first feeding roller and rotates in a direction orthogonal to the rotational direction of the first feeding roller so that the blade portion of the flat coil is wound in a straight state, thereby switching the rolling direction of the flat coil and supplying it. Stator coil winding device for a vehicle motor.

4. In paragraph 1, It is characterized in that it further includes a second tension buffer unit formed between the coil supply unit and the first coil feeding unit, and buffering the tension of the flat coil according to the supply speed of the coil supply unit. Stator coil winding device for a vehicle motor.

5. In paragraph 1, The second coil feeding section is composed of a pair of third and fourth feeding rollers, which are formed between the third feeding roller and the fourth feeding roller, through which the flat coil is supplied in close contact with the upper surface, and a load cell roller which measures the tension amount of the flat coil between the third feeding roller and the fourth feeding roller, through which the evaluation coil is supplied in close contact with the lower surface. The coil tension unit is characterized in that it is composed of a load cell indicator that displays the tension amount, a powder brake controller that receives the tension amount from the load cell indicator, and a powder brake roller that rotates or stops according to the tension amount transmitted from the powder brake controller. Stator coil winding device for a vehicle motor.

6. In paragraph 1, The above coil winding part, A lower chuck on which the lower end of the flat stator coil bobbin is fixed, an upper chuck that slides up and down to pressurize and fix the upper end of the flat stator coil bobbin, a lower cross roller bearing that guides the rotation of the lower chuck, a lower frame on which the lower cross roller bearing is formed, a lower pulley coupled to the rotational axis of the lower chuck, an upper cross roller bearing that guides the rotation of the upper chuck, an upper frame on which the upper cross roller bearing is formed, an upper pulley coupled to the rotational axis of the upper chuck, a synchronous built-in spindle motor that is connected to the lower pulley and the upper pulley by a timing belt to provide a rotational force synchronized at both ends, and an encoder that detects the rotational speed of the synchronous built-in spindle motor. Stator coil winding device for a vehicle motor.

7. In paragraph 6, The above coil winding part, The above-mentioned flat stator coil bobbin further includes a pair of first guide vanes that move up and down while facing each other on both long sides, and a pair of second guide vanes that move up and down while facing each other on one short side of the flat stator coil bobbin, wherein the pair of first guide vanes and the pair of second guide vanes maintain a gap equal to the blade width of the flat coil so as to repeatedly guide the flat coil up and down on the flat stator coil bobbin to wind it in multiple layers. Stator coil winding device for a vehicle motor.

8. In paragraph 1, The nozzle part is characterized in that it includes a winding detection sensor that detects the presence and length of the flat coil. Stator coil winding device for a vehicle motor.

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