Foreign substance removal system and foreign substance removal method

Abstract

To remove a foreign substance which is generated when inserting an expansion blade part between segment coils.SOLUTION: A foreign substance removal system comprises: a processing station which molds a front end of a segment coil; and a foreign substance removal station including a blade table on which an expansion blade part transferred from the processing station by a transfer section is mounted, a table rotation section for rotating the blade table around an axis of the expansion blade part, an air blow section which is provided on a lateral of the blade table and blows air to a rear end of the expansion blade part on the blade table, an air blow suction section which is provided at a position opposite to the air blow section and sucks air from the air blow section, a rotary brush section which rotates a brush part while pressing the brush part to the front end of the expansion blade part on the blade table, and a brush suction section which is provided in the rotary brush section and sucks a foreign substance deposited to the brush part.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a foreign matter removal system and a foreign matter removal method.

Background Art

[0002] A system is known in which the tip of a segment coil is formed with high positional accuracy by inserting an expansion blade portion between the segment coils (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] As described above, when inserting the expansion blade portion between the segment coils, foreign matter such as burrs may be generated due to rubbing between the expansion blade and the tip of the segment coil. For example, there is a risk that such foreign matter may enter between the coil tip and the expansion blade portion, leading to poor forming accuracy or damage to the coating of the copper wire.

[0005] The present disclosure has been made to solve such problems, and a main object thereof is to provide a foreign matter removal system and a foreign matter removal method capable of removing foreign matter generated when inserting an expansion blade portion between segment coils.

Means for Solving the Problems

[0006] One aspect of the present disclosure for achieving the above object is a processing station for forming the tip of the segment coil by inserting the tip of a cylindrical expansion blade portion between the segment coils, and a transport unit for transporting the expansion blade portion of the processing station to a foreign matter removal station A blade stand on which the extended blade part conveyed by the conveying part is placed, A base rotation part that rotates the blade stand around the axis of the extended blade part, An air blow part that is provided on the side of the blade stand and blows air against the rear end part of the extended blade part on the blade stand, An air blow suction part that is provided at a position facing the air blow part and sucks air from the air blow part, A rotating brush part that rotates the brush part while pressing the brush part against the tip part of the extended blade part on the blade stand, A brush suction part that is provided in the rotating brush part and sucks foreign matter attached to the brush part, having, the foreign matter removal station, comprising, a foreign matter removal system is. In this aspect, The extended blade part has a cylindrical first extended blade and a cylindrical second extended blade disposed outside the first extended blade, or has the first extended blade, the second extended blade, and a cylindrical third extended blade disposed outside the second extended blade, A flange part protruding outward may be formed at the rear end part of each of the first to third extended blades. In this aspect, the blade stand may be provided with an adjustment mechanism that adjusts the axial position of each of the first to third extended blades by pushing the flange parts of the first to third extended blades in the axial direction of the first to third extended blades, respectively. In this aspect, the air blow part may have first to third air blow parts that blow air against the flange parts of the first to third extended blades that are respectively adjusted in the axial position of the first to third extended blades by the adjustment mechanism. One aspect of the present disclosure for achieving the above object is, In the processing station, by inserting the tip of the cylindrical extended blade portion between the segment coils, the step of forming the tip of the segment coil; The step of transporting the extended blade portion of the processing station to a foreign matter removal station; Placing the transported extended blade portion on a blade table, the table rotation portion rotating the blade table, the air blow portion blowing air against the rear end portion of the extended blade portion on the blade table, and an air blow suction portion provided at a position facing the air blow portion sucking the air from the air blow portion, the rotary brush portion pressing the brush portion against the tip of the extended blade portion on the blade table while rotating the brush portion, and the brush suction portion sucking foreign matter adhering to the brush portion; Foreign matter removal method is.

Effect of the Invention

[0007] According to the present disclosure, it is possible to provide a foreign matter removal system and a foreign matter removal method capable of removing foreign matter generated when inserting an extended blade portion between segment coils.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0009] Hereinafter, this embodiment will be described with reference to the drawings. FIG. 1 is a perspective view showing a schematic configuration of a foreign matter removal system according to this embodiment. As shown in FIG. 1, the foreign matter removal system 1 according to this embodiment includes a processing station 2, a conveying unit 3, and a foreign matter removal station 4.

[0010] Here, when aiming for miniaturization and high output of a motor and a rotating electric machine, it is conceivable to increase the current value flowing through the coil provided in the stator core. However, for this purpose, it is necessary to secure the cross-sectional area of the coil used for the stator core, and a coil using a rectangular conductor is used. As one method of forming a coil with a rectangular conductor, there is one using a segment coil. It is a method of forming a coil by bending a rectangular conductor into a substantially U shape, inserting it into the slot of the stator core, and then welding the tip of the segment coil protruding from the end face of the stator core.

[0011] As shown in FIG. 2, the processing station 2 forms the tip 102 of the segment coil 101 inserted into the slot of the stator core 100 by means of the cylindrical expansion blade portion 21. Thereby, the tip portions 102 on the lead side of the conductor segment group protruding from the end face of the stator core 100 can be formed at predetermined positions and welded.

[0012] The processing station 2 collectively forms the tip portions 102 of the segment coils 101 by inserting the tip portion 217 of the expansion blade portion 21 between the segment coils 101.

[0013] When inserting the expansion blade between these segment coils 101, as shown in FIG. 2(a), foreign matters such as burrs of about 0.1 to 0.2 mm may be generated due to rubbing between the expansion blade portion 21 and the tip portion 102. For example, there is a risk that such foreign matters may enter between the tip portion 102 and the expansion blade portion 21, leading to poor forming accuracy or damage to the film of the copper wire.

[0014] In contrast, in the present embodiment, as shown in FIG. 1, the conveying unit 3 conveys the expanded blade portion 21 after the above-described shaping process in the processing station 2 to the foreign matter removal station 4. The foreign matter removal station 4 removes foreign matter from the expanded blade portion 21 conveyed by the conveying unit 3.

[0015] FIG. 3 is a perspective view showing a schematic configuration of the foreign matter removal station. The foreign matter removal station 4 includes a blade table 41, a table rotating unit 42, an air blow unit 43, an air blow suction unit 44, a rotating brush unit 45, and a brush suction unit 46.

[0016] The expanded blade portion 21 conveyed by the conveying unit 3 is placed on the blade table 41. As shown in FIG. 4, the expanded blade portion 21 has a cylindrical first expanded blade 211, a cylindrical second expanded blade 212 disposed outside the first expanded blade, and a cylindrical third expanded blade 213 disposed outside the second expanded blade. At the rear ends of the first to third expanded blades 211, 212, 213, flange portions 214, 215, 216 protruding outward are respectively formed.

[0017] Note that the expanded blade portion 21 may have, for example, a configuration having the first expanded blade 211 and the second expanded blade 212, and may further have a configuration having only the first expanded blade 211 or a configuration having four or more expanded blades.

[0018] The blade table 41 is provided with an adjustment mechanism 411 that adjusts the axial positions (height positions) of the second to third expanded blades 212, 213 while supporting the flange portions 215, 216 of the second to third expanded blades 212, 213 in the axial direction (vertical direction) of the expanded blade portion 21.

[0019] The adjustment mechanism 411 includes, for example, a support roller 412, a holding portion 413, a lifting actuator 414, and a guide portion 415. The support roller 412 rotatably supports the flange portions 215, 216 of the second to third expanded blades 212, 213 around the axis.

[0020] The holding part 413 rotatably holds the support roller 412. The lifting actuator 414 axially moves the holding part 413. The guide part 415 is erected on the blade base 41, penetrates through the flange parts 215 and 216, and guides the second to third extension blades 212 and 213 to move axially.

[0021] From the state shown in Fig. 4(a), the adjustment mechanism 411 moves the holding part 413 and the support roller 412 downward along the guide part 415 by the lifting actuator 414, so that, as shown in Fig. 4(b), the tip parts of the first to second extension blades 211 and 212 can be sufficiently exposed to the outside. Thereby, the brush part 451 can be pressed against and rotated with respect to the exposed tip parts of the first to second extension blades 211 and 212, and foreign matters adhering thereto can be surely removed as described later.

[0022] The base rotation part 42 rotates the blade base 41 about the axis of the extension blade part 21. The base rotation part 42 has, for example, as shown in Fig. 5, a blade rotation actuator 421, first and second transmission gears 422 and 423 that mesh with each other and transmit the rotational force of the blade rotation actuator 421, and a base gear 424 that is connected to the blade base 41 and meshes with the second transmission gear 423.

[0023] As shown in Fig. 3, the air blow part 43 is provided on the side of the blade base 41. The air blow part 43 blows air against the flange parts 214, 215, and 216 at the rear end of the extension blade part 21 on the blade base 41 that rotates by the base rotation part 42.

[0024] The air blow part 43 has first to third air blow parts 431, 432, and 433 that blow air against the flange parts 214, 215, and 216 of the first to third extension blades 211, 212, and 213 that are respectively adjusted to predetermined positions in the axial direction by the adjustment mechanism 411.

[0025] To the first to third air blow parts 431, 432, and 433, air is supplied from a pump, for example, via piping or the like. Thereby, foreign matter adhering to the flange parts 214, 215, and 216 of the first to third extended blades 211, 212, and 213 can be surely blown off and removed.

[0026] The air blow suction part 44 is provided at a position facing the air blow part 43 and sucks the air from the air blow part 43. A suction device is connected to the air blow suction part 44, for example, via piping or the like. The air blow suction part 44 can surely suck the air from the air blow part 43 and collect foreign matter contained in the air, thereby suppressing its scattering.

[0027] As shown in FIG. 2, the rotary brush part 45 is provided on the side of the blade base 41. The rotary brush part 45 rotates the brush part 451 while pressing the brush part 451 against the tip part 217 of the extended blade part 21 on the blade base 41 that rotates by the base rotation part 42.

[0028] As described above, the rotary brush part 45 rotates the brush part 451 while pressing the brush part 451 against the tip part 217 of the extended blade part 21 exposed by the adjustment mechanism 411 of the blade base 41. Thereby, foreign matter adhering to the tip part 217 of the extended blade part 21 can be surely removed.

[0029] For example, as shown in FIG. 5, the rotary brush part 45 has a brush part 451, a holding part 452, a turning actuator 453, a rotation transmission part 454, and an air nozzle part 458.

[0030] The holding part 452 rotatably holds the brush part 451. The turning actuator 453 presses the brush part 451 held by the holding part 452 against the tip part 217 of the extended blade part 21 by turning the holding part 452.

[0031] The rotation transmission unit 454 transmits the rotational force from the blade rotation actuator 421 as the rotational force of the brush unit 451. The rotation transmission unit 454 includes, for example, a first pulley 455 connected to the first transmission gear 422 of the base rotation unit 42 via a shaft or the like, a second pulley 456 connected to the rotation shaft of the brush unit 451, and a belt 457 wound between the first pulley 455 and the second pulley 456.

[0032] In this way, the brush unit 451 can be rotated by utilizing the rotational force of the blade rotation actuator 421 that rotates the extended blade unit 21. Therefore, it is not necessary to separately provide an actuator for rotating the brush unit 451, leading to downsizing of the system and cost reduction.

[0033] The air nozzle unit 458 is provided at the upper end of the holding unit 452. The air nozzle unit 458 blows air against the tip 217 of the extended blade unit 21 on the blade base 41 that rotates with the base rotation unit 42. Thereby, foreign matter adhering to the tip 217 of the extended blade unit 21 can be blown off and removed. Air is supplied to the air nozzle unit 458 from a pump via, for example, a pipe or the like.

[0034] As shown in FIG. 3, the brush suction unit 46 is provided on the side of the rotating brush unit 45 and sucks foreign matter adhering to the brush unit 451. A suction device is connected to the brush suction unit 46 via, for example, a pipe or the like. Thereby, the foreign matter removed by the brush unit 451 from the tip 217 of the extended blade unit 21 can be sucked and collected by the brush suction unit 46, preventing the scattering of the foreign matter.

[0035] In the foreign object removal method according to the above embodiment, the processing station 2 forms the tip 102 of the segment coil 101 by inserting the tip 217 of the cylindrical expansion blade portion 21 between the segment coils 101. The transport unit 3 transports the expansion blade portion 21 of the processing station 2 to the foreign object removal station 4. The transported expansion blade portion 21 is placed on the blade table 41. While the table rotation unit 42 rotates the blade table 41, the air blow unit 43 blows air against the rear end portion of the expansion blade portion 21 on the blade table 41, and the air blow suction unit 44 sucks the air from the air blow unit 43. At the same time, the rotating brush unit 45 presses the brush portion 451 against the tip 217 of the expansion blade portion 21 on the blade table 41 while rotating the brush portion 451, and the brush suction unit 46 sucks the foreign objects adhering to the brush portion 451.

[0036] According to the foreign object removal method according to the above embodiment, foreign objects generated when inserting the expansion blade portion 21 between the segment coils 101 can be reliably removed.

[0037] Although several embodiments of the present disclosure have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and its equivalent scope.

Description of Reference Numerals

[0038] 1 Foreign object removal system, 2 Processing station, 3 Conveyor section, 4 Foreign object removal station, 21 Expansion blade section, 41 Blade base, 42 Base rotation section, 43 Air blow section, 44 Air blow suction section, 45 Rotating brush section, 46 Brush suction section, 100 Stator core, 101 Segment coil, 102 Tip portion, 211 First expansion blade, 212 Second expansion blade, 213 Third expansion blade, 214 Flange portion, 215 Flange portion, 216 Flange portion, 217 Tip portion, 411 Adjustment mechanism, 412 Support roller, 413 Holding section, 414 Lifting actuator, 415 Guide section, 421 Actuator for blade rotation, 422 First transmission gear, 423 Second transmission gear, 424 Base gear, 431 Air blow section, 451 Brush section, 452 Holding section, 453 Swivel actuator, 454 Rotation transmission section, 455 First pulley, 456 Second pulley, 457 Belt

Claims

1. A processing station for forming the tip of the segment coil by inserting the tip of the cylindrical expansion blade portion between the segment coils, A transport unit for transporting the expansion blade portion of the processing station to a foreign matter removal station, A blade table on which the expansion blade portion transported by the transport unit is placed, A table rotation unit for rotating the blade table about the axis of the expansion blade portion, An air blow unit provided on the side of the blade table for blowing air against the rear end portion of the expansion blade portion on the blade table, An air blow suction unit provided at a position facing the air blow unit for sucking the air from the air blow unit, A rotary brush unit for rotating the brush portion while pressing the brush portion against the tip of the expansion blade portion on the blade table, A brush suction unit provided in the rotary brush unit for sucking foreign matter adhering to the brush portion, Having The foreign matter removal station, Comprising A foreign matter removal system.

2. The foreign matter removal system according to claim 1, The expansion blade portion has a cylindrical first expansion blade and a cylindrical second expansion blade disposed outside the first expansion blade, or has the first expansion blade, the second expansion blade, and a cylindrical third expansion blade disposed outside the second expansion blade, Flange portions protruding outward are respectively formed at the rear end portions of the first to third expansion blades. A foreign matter removal system.

3. The foreign matter removal system according to claim 2, The blade table is provided with an adjustment mechanism for adjusting the axial positions of the first to third expansion blades by respectively pushing the flange portions of the first to third expansion blades in the axial direction of the first to third expansion blades. A foreign matter removal system.

4. The foreign matter removal system according to claim 3, The air blow unit has first to third air blow units for blowing air against the flange portions of the first to third expansion blades respectively adjusted in the axial positions of the first to third expansion blades by the adjustment mechanism. A foreign matter removal system.

5. In the processing station, a step of forming the tip of the segment coil by inserting the tip of the cylindrical expansion blade portion between the segment coils, A step of transporting the expansion blade portion of the processing station to a foreign matter removal station, Place the transported extended blade portion on the blade table, rotate the blade table by the table rotation unit, blow air onto the rear end portion of the extended blade portion on the blade table by the air blow unit, suck the air from the air blow unit by the air blow suction unit provided at a position facing the air blow unit, press the brush portion against the tip portion of the extended blade portion on the blade table while rotating the brush portion by the rotary brush unit, and suck foreign matter adhering to the brush portion by the brush suction unit. Foreign matter removal method.

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