Foreign object removal system and foreign object 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 extended 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 an extended blade portion between segment coils, foreign matter such as burrs may be generated due to rubbing between the extended 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 extended blade portion, leading to poor forming accuracy or damage to the film 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 extended 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 that forms the tip of the segment coil by inserting the tip of a cylindrical extended blade portion between the segment coils, and a transport unit that transports the extended blade portion of the processing station to a foreign matter removal station. A blade stand on which the extended blade section conveyed by the transport section is placed, The blade base includes a base rotation unit that rotates the blade base around the axis of the extended blade section, An air blow unit is provided on the side of the blade base and blows air onto the rear end of the extended blade portion on the blade base, An air blow suction unit is provided at a position opposite to the aforementioned air blow unit and sucks air from the air blow unit, A rotating brush section that presses the brush section against the tip of the extended blade section on the blade base and rotates the brush section, A brush suction unit is provided on the rotating brush section for sucking up foreign matter adhering to the brush section, Having, The aforementioned foreign matter removal station, Equipped with, Foreign object removal system That is the case. On this flight, The extension blade portion comprises a cylindrical first extension blade and a cylindrical second extension blade positioned outside the first extension blade, or comprises the first extension blade, the second extension blade, and a cylindrical third extension blade positioned outside the second extension blade. The rear ends of the first to third extension blades may each have a flange portion that protrudes outward. In this embodiment, the blade base may be provided with an adjustment mechanism that adjusts the axial position of the first to third extension blades by pressing the flange portions of the first to third extension blades in the axial direction of the first to third extension blades, respectively. In one embodiment, the air blow section may have first to third air blow sections that blow air onto the flanges of the first to third extension blades, which are respectively adjusted by the adjustment mechanism to the axial positions of the first to third extension blades. One aspect of this disclosure for achieving the above objectives is: In the processing station, the tip of the cylindrical expansion blade is inserted between the segment coils to form the tip of the segment coil. The steps include transporting the extended blade portion of the processing station to the foreign matter removal station, The transported extended blade section is placed on the blade stand, the stand rotation section rotates the blade stand, the air blow section blows air onto the rear end of the extended blade section on the blade stand, the air blow suction section, positioned opposite the air blow section, sucks up the air from the air blow section, the rotating brush section presses the brush section against the tip of the extended blade section on the blade stand and rotates the brush section, and the brush suction section sucks up any foreign matter attached to the brush section. Foreign matter removal method That is the case. [Effects of the Invention]

[0007] According to this disclosure, a foreign matter removal system and a foreign matter removal method can be provided that can remove foreign matter generated when an expansion blade portion is inserted between segment coils. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view showing the schematic configuration of the foreign object removal system according to this embodiment. [Figure 2] This diagram shows the extension blade's cutting edge inserted between the segment coils. [Figure 3] This is a perspective view showing the general configuration of the foreign object removal station. [Figure 4] This diagram shows the tip of the extension blade exposed to the outside. [Figure 5] This is a diagram showing the rotating brush section. [Modes 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 the 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 conveyance unit 3, and a foreign matter removal station 4.

[0010] Here, when aiming to miniaturize and increase the output of motors and rotary electric machines, 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. As a result, 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 this embodiment, as shown in Figure 1, the transport unit 3 transports the expanded blade section 21, which has undergone the molding process at the processing station 2, to the foreign matter removal station 4. The foreign matter removal station 4 removes foreign matter from the expanded blade section 21 transported by the transport unit 3.

[0015] Figure 3 is a perspective view showing the schematic configuration of the foreign object removal station. The foreign object removal station 4 comprises a blade base 41, a base rotation 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 extended blade section 21, which has been transported by the transport section 3, is placed on the blade base 41. As shown in Figure 4, the extended blade section 21 has a cylindrical first extended blade 211, a cylindrical second extended blade 212 positioned outside the first extended blade, and a cylindrical third extended blade 213 positioned outside the second extended blade. The rear ends of the first to third extended blades 211, 212, and 213 are each formed with flanges 214, 215, and 216 that protrude outward.

[0017] The extension blade section 21 may, for example, have a configuration comprising a first extension blade 211 and a second extension blade 212, or it may have only the first extension blade 211, or it may have a configuration comprising four or more extension blades.

[0018] The blade base 41 is provided with an adjustment mechanism 411 that supports the flange portions 215 and 216 of the second and third extension blades 212 and 213 in the axial direction (up and down direction) of the extension blade portion 21, while adjusting the axial position (height position) of the second and third extension blades 212 and 213.

[0019] The adjustment mechanism 411 includes, for example, a support roller 412, a holding part 413, a lifting actuator 414, and a guide part 415. The support roller 412 rotatably supports the flanges 215 and 216 of the second and third extension blades 212 and 213 around their axes.

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

[0021] The adjustment mechanism 411, from the state shown in Figure 4(a), moves the holding portion 413 and support roller 412 downward along the guide portion 415 using the lifting actuator 414, thereby allowing the tips of the first and second extension blades 211 and 212 to be fully exposed to the outside, as shown in Figure 4(b). This allows the brush portion 451 to be pressed against the exposed tips of the first and second extension blades 211 and 212 and rotated, as described later, to reliably remove any foreign matter adhering to them.

[0022] The base rotation unit 42 rotates the blade base 41 around the axis of the extended blade unit 21. The base rotation unit 42 includes, for example, 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] The air blow unit 43 is located to the side of the blade base 41, as shown in Figure 3. The air blow unit 43 blows air onto the flanges 214, 215, and 216 at the rear end of the extended blade portion 21 on the blade base 41, which is rotated by the base rotation unit 42.

[0024] The air blow section 43 has first to third air blow sections 431, 432, and 433 that blow air onto the flanges 214, 215, and 216 of the first to third extension blades 211, 212, and 213, which are respectively adjusted to predetermined axial positions by the adjustment mechanism 411.

[0025] Air is supplied to the first to third air blow sections 431, 432, and 433 from a pump, for example, via piping. This ensures that foreign matter adhering to the flanges 214, 215, and 216 of the first to third extension blades 211, 212, and 213 is reliably blown away and removed.

[0026] The air blow suction unit 44 is positioned opposite the air blow unit 43 and sucks air from the air blow unit 43. A suction device is connected to the air blow suction unit 44, for example, via piping. The air blow suction unit 44 reliably sucks air from the air blow unit 43 and collects foreign matter contained in that air, thereby suppressing its scattering.

[0027] As shown in Figure 2, the rotating brush section 45 is located to the side of the blade base 41. The rotating brush section 45 presses the brush section 451 against the tip 217 of the extended blade section 21 on the blade base 41, which is rotated by the base rotation section 42, and rotates the brush section 451.

[0028] As described above, the rotating brush section 45 presses the brush section 451 against the tip 217 of the extended blade section 21, which is exposed by the adjustment mechanism 411 of the blade base 41, and rotates the brush section 451. This ensures that foreign matter adhering to the tip 217 of the extended blade section 21 is reliably removed.

[0029] The rotating brush section 45 includes, for example, a brush section 451, a holding section 452, a swivel actuator 453, a rotation transmission section 454, and an air nozzle section 458, as shown in Figure 5.

[0030] The holding part 452 rotatably holds the brush part 451. The swivel actuator 453 rotates the holding part 452, thereby pressing the brush part 451 held by the holding part 452 against the tip 217 of the extended blade part 21.

[0031] The rotation transmission unit 454 transmits the rotational force from the blade rotation actuator 421 as rotational force to 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 stretched between the first pulley 455 and the second pulley 456.

[0032] In this way, the brush section 451 can be rotated by utilizing the rotational force of the blade rotation actuator 421 that rotates the extended blade section 21. Therefore, there is no need to provide a separate actuator to rotate the brush section 451, which leads to miniaturization of the system and cost reduction.

[0033] The air nozzle section 458 is provided at the upper end of the holding section 452. The air nozzle section 458 blows air onto the tip 217 of the extension blade section 21, which is on the blade base 41 rotated by the base rotation section 42. This blows away and removes foreign matter adhering to the tip 217 of the extension blade section 21. Air is supplied to the air nozzle section 458 from a pump, for example, via piping.

[0034] As shown in Figure 3, the brush suction unit 46 is located to the side of the rotating brush unit 45 and sucks up foreign matter adhering to the brush unit 451. A suction device is connected to the brush suction unit 46, for example, via piping. This allows foreign matter removed by the brush unit 451 from the tip 217 of the extension blade unit 21 to be sucked up and collected by the brush suction unit 46, preventing the scattering of the foreign matter.

[0035] In the foreign matter removal method according to the embodiment described above, the processing station 2 forms the tip portion 102 of the segment coil 101 by inserting the tip portion 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 matter removal station 4. The transported expansion blade portion 21 is placed on the blade base 41. The base rotation unit 42 rotates the blade base 41, while the air blow unit 43 blows air onto the rear end of the expansion blade portion 21 on the blade base 41, and the air blow suction unit 44 sucks up 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 portion 217 of the expansion blade portion 21 on the blade base 41, and rotates the brush portion 451, while the brush suction unit 46 sucks up foreign matter attached to the brush portion 451.

[0036] According to the foreign matter removal method of the above embodiment, foreign matter generated when inserting the extension blade portion 21 between the segment coils 101 can be reliably removed.

[0037] While several embodiments of this disclosure have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents. [Explanation of Symbols]

[0038] 1 Foreign object removal system, 2 Processing station, 3 Conveying section, 4 Foreign object removal station, 21 Extended blade section, 41 Blade stand, 42 Rotating stand 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 section, 211 First extended blade, 212 Second extended blade, 213 Third extended blade, 214 Flange section, 215 Flange section, 216 Flange section, 217 Tip section, 411 Adjustment mechanism, 412 Support roller, 413 Holding section, 414 Lifting actuator, 415 Guide section, 421 Blade rotation actuator, 422 First transmission gear, 423 Second transmission gear, 424 Stand gear, 431 Air blow section, 451 Brush section, 452 Holding part, 453 Swivel actuator, 454 Rotation transmission part, 455 First pulley, 456 Second pulley, 457 Belt

Claims

1. A processing station that shapes the tip of a segment coil by inserting the tip of a cylindrical expansion blade between the segment coils, A conveying unit that transports the extended blade portion of the processing station to the foreign matter removal station, A blade stand on which the extended blade section conveyed by the transport section is placed, The blade base includes a base rotation unit that rotates the blade base around the axis of the extended blade section, An air blow unit is provided on the side of the blade base and blows air onto the rear end of the extended blade portion on the blade base, An air blow suction unit is provided at a position opposite to the aforementioned air blow unit and sucks air from the air blow unit, A rotating brush section that presses the brush section against the tip of the extended blade section on the blade base and rotates the brush section, A brush suction unit is provided on the rotating brush section for sucking up foreign matter adhering to the brush section, Having, The aforementioned foreign matter removal station, Equipped with, Foreign object removal system.

2. A foreign matter removal system according to claim 1, The extension blade section comprises a cylindrical first extension blade and a cylindrical second extension blade positioned outside the first extension blade, or comprises the first extension blade, the second extension blade, and a cylindrical third extension blade positioned outside the second extension blade. Each of the first to third extension blades has a flange portion that protrudes outward formed at its rear end. Foreign object removal system.

3. A foreign matter removal system according to claim 2, The blade base is provided with an adjustment mechanism that adjusts the axial position of the first to third extension blades by pushing the flange portions of the first to third extension blades in the axial direction of the first to third extension blades. Foreign object removal system.

4. A foreign matter removal system according to claim 3, The air blow section has first to third air blow sections that blow air onto the flanges of the first to third extension blades, which are respectively adjusted to the axial positions of the first to third extension blades by the adjustment mechanism. Foreign object removal system.

5. In the processing station, the tip of the cylindrical expansion blade is inserted between the segment coils to form the tip of the segment coil. The steps include transporting the extended blade portion of the processing station to the foreign matter removal station, The transported extended blade section is placed on the blade stand, the stand rotation section rotates the blade stand, the air blow section blows air onto the rear end of the extended blade section on the blade stand, the air blow suction section, positioned opposite the air blow section, sucks up the air from the air blow section, the rotating brush section presses the brush section against the tip of the extended blade section on the blade stand and rotates the brush section, and the brush suction section sucks up any foreign matter attached to the brush section. Foreign body removal method.

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