Hairpin alignment device for a hairpin winding motor and a hairpin alignment method using the same

Abstract

A hairpin alignment device for a hairpin winding motor and a hairpin alignment method using the same are disclosed. A hairpin alignment device for a hairpin winding motor according to one embodiment of the present invention is a hairpin alignment device for a hairpin winding motor that pre-aligns a plurality of hairpins inserted into a hairpin winding motor into at least one layer in a slot of a dummy core, and comprises: a rotation unit in which the dummy core is mounted in the center and the dummy core is rotated at a certain angle corresponding to the shape of the slot; an alignment unit disposed on the upper surface of the rotation unit and having a plurality of push bars disposed along the upper circumference of the dummy core that reciprocate radially with respect to the hairpin; a guide unit disposed on the side of the rotation unit and selectively operates on the hairpins that overlap in each layer when the hairpins are pre-aligned in the slot, and moves the overlapping hairpins radially outward to secure an insertion space for the hairpins; and a handling gripper disposed adjacent to the rotation unit and supplying the hairpins to the slot.

Description

Technology Field

[0001] The present invention relates to a hairpin alignment device for a hairpin winding motor and a hairpin alignment method using the same, and more specifically, to a hairpin alignment device for a hairpin winding motor capable of supporting various types of hairpin winding motors and an alignment method using the same. Background Technology

[0002] In the automotive industry, research, development, and commercialization of eco-friendly vehicle components are actively underway in response to the implementation of greenhouse gas reduction regulations and international demands for improved fuel efficiency.

[0003] Conventionally, a technology has been proposed that applies a drive motor with higher efficiency than the internal combustion engine to shoulder part or all of the internal combustion engine's output.

[0004] To operate the above-mentioned drive motor, many auxiliary devices such as an inverter, battery, and LDC are required.

[0005] These additional devices not only have a significant weight but also have the problem of occupying a large volume.

[0006] Therefore, automakers and eco-friendly parts manufacturers are applying hairpins to drive motors as part of technological developments to reduce weight and volume.

[0007] Generally, it is known that the output of a drive motor is proportional to the number of turns of the coil wound on the stator core.

[0008] However, increasing the number of turns of the coil increases the size of the stator core or the drive motor, which makes it difficult to miniaturize the drive motor.

[0009] Accordingly, in order to improve output without increasing the size of the drive motor, a method of increasing the packing density of the coil wound on the stator core may be considered.

[0010] In other words, the dead space between the stator core and the wound coil, or the dead space between each coil, is minimized to increase the coil packing efficiency.

[0011] In this context, a method is proposed to use a flat coil with a square cross-section instead of a ring coil with a circular cross-section in the coil winding.

[0012] Due to its cross-sectional shape, the above-mentioned square coil can reduce dead space and improve the packing efficiency compared to annular coils.

[0013] Meanwhile, in the case of the above-mentioned square coil, the winding process is relatively more difficult compared to the annular coil.

[0014] This is because the aforementioned rectangular coil is manufactured with a wider cross-sectional area compared to the annular coil to maximize the packing density, and consequently, its increased rigidity makes it difficult to use with winding machines.

[0015] A method has been proposed to facilitate the coil winding of the above-mentioned rectangular coil, wherein a plurality of separate hairpins are each inserted and fastened into a stator core, and then each hairpin is sequentially welded and joined to form a coil winding.

[0016] These hairpins are made in a U-shape or V-shape.

[0017] The above hairpin includes a pair of straight conductor sections formed at both ends, a turn section formed between the pair of straight conductor sections, and a hairpin end formed by peeling off the insulating coating of a certain section of the end of the pair of straight conductor sections.

[0018] The above hairpin is mounted by inserting and fixing a pair of straight conductor parts into the slots of the core, with the upper part exposed to the upper axial direction of the stator core and the turn part exposed to the lower axial direction of the stator core.

[0019] However, hairpins according to conventional technology must be inserted one by one into designated slots according to a preset pattern inside the stator core, so there is a problem that inserting the hairpin takes a long time.

[0020] The conventional method of inserting hairpins has the problem of not only delaying the overall work process time but also reducing the accuracy of the work process.

[0021] Therefore, research and development are needed on a method to accurately and quickly insert the aforementioned hairpin into the stator core.

[0022] The matters described in this background technology section are written to enhance understanding of the background of the invention and may include matters that are not prior art already known to those skilled in the art to which this technology belongs. The problem to be solved

[0023] An embodiment of the present invention aims to provide a hairpin alignment device for a hairpin winding motor capable of accommodating regardless of the type of stator core and hairpin, and a hairpin alignment method using the same. means of solving the problem

[0024] In one or more embodiments of the present invention, a hairpin alignment device for a hairpin winding motor may be provided, wherein a plurality of hairpins inserted into the hairpin winding motor are pre-aligned in at least one layer in the slot of a dummy core, the device comprising: a rotating unit in which the dummy core is mounted in the center and the dummy core is rotated at a certain angle corresponding to the shape of the slot; an alignment unit disposed on the upper surface of the rotating unit and having a plurality of push bars disposed along the upper circumference of the dummy core that reciprocate radially with respect to the hairpins; a guide unit disposed on the side of the rotating unit and selectively operates on the hairpins that overlap in each layer when the hairpins are pre-aligned in the slot, and moves the overlapping hairpins radially outward to secure an insertion space for the hairpins; and a handling gripper disposed adjacent to the rotating unit and supplying the hairpins to the slot.

[0025] Additionally, the rotation unit may include a rotation jig that clamps at least one mounting block mounted along the side perimeter of the dummy core and rotates the dummy core at a certain angle, and a lower plate disposed at the bottom of the dummy core and pushes a hairpin aligned in the slot upward from the dummy core.

[0026] In addition, the alignment unit rotates at a certain angle together with the dummy core by the rotation unit, and the plurality of push bars can press the hairpins aligned in the slots in the radial direction to position them correctly.

[0027] In addition, the contact surface of the plurality of push bars that contact the hairpin may be formed in a round shape.

[0028] In addition, the plurality of push bars may be arranged radially at the center of a ring-shaped guide plate mounted on the upper part of the rotation unit, and may be arranged so that their vertical positions intersect in a zigzag pattern.

[0029] Additionally, the guide unit may include a guide bar positioned on the upper part of the dummy core, with one end bent and positioned radially inward of the hairpin, and the other end connected to the rotation unit by a connecting bracket, and a first driving unit mounted on the connecting bracket to reciprocate the guide bar radially.

[0030] In addition, when the rotation unit rotates by a set angle, the guide bar can move outward in the radial direction and move the corresponding hairpin attached to one end to secure an insertion space within the slot.

[0031] In addition, it may further include a pressure unit positioned on the upper part of the alignment unit and pressing the hairpin aligned in the slot downward to position it correctly.

[0032] Additionally, the pressure unit may comprise a frame positioned adjacent to the rotation unit and a ring-shaped plate, and may include a pressure plate that is slidably mounted on the frame by a second drive unit and positioned at the upper center of the dummy core, and reciprocates in the up-and-down direction by a third drive unit mounted on the second drive unit to apply pressure to a hairpin aligned in the slot. Effects of the invention

[0033] The hairpin alignment device for a hairpin winding motor and the hairpin alignment method using the same according to an embodiment of the present invention can accommodate various types of stator cores and hairpins, thereby having the effect of reducing initial design costs.

[0034] In addition, the hairpin alignment device for a hairpin winding motor and the hairpin alignment method using the same according to an embodiment of the present invention enable hairpin alignment without interference by applying a guide unit to provide an insertion space within the slot of a dummy core.

[0035] Furthermore, other effects that can be obtained or predicted by the embodiments of the present invention will be disclosed directly or implicitly in the detailed description of the embodiments of the present invention. That is, various effects predicted according to the embodiments of the present invention will be disclosed within the detailed description to be set forth below. Brief explanation of the drawing

[0036] FIG. 1 is a schematic diagram illustrating the stator structure of a hairpin winding motor applied to an embodiment of the present invention. FIG. 2 is an overall perspective view of a hairpin alignment device for a hairpin winding motor according to an embodiment of the present invention. FIG. 3 is a configuration diagram for explaining a rotation unit applied to a hairpin alignment device for a hairpin winding motor according to an embodiment of the present invention. FIG. 4 is a configuration diagram for explaining an alignment unit applied to a hairpin alignment device for a hairpin winding motor according to an embodiment of the present invention. FIG. 5 is a configuration diagram for explaining a guide unit applied to a hairpin alignment device for a hairpin winding motor according to an embodiment of the present invention. FIG. 6 is a configuration diagram for explaining a pressure unit applied to a hairpin alignment device for a hairpin winding motor according to an embodiment of the present invention. FIGS. 7 to 12 are drawings sequentially illustrating a hairpin alignment method for a hairpin winding motor according to an embodiment of the present invention. Specific details for implementing the invention

[0037] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0038] To clearly explain the present invention, parts unrelated to the explanation have been omitted, and the same reference numerals are used for identical or similar components throughout the specification.

[0039] The size and thickness of each component shown in the drawings are depicted arbitrarily for the convenience of explanation, and thus the present invention is not necessarily limited to what is shown in the drawings; furthermore, the thickness has been enlarged to clearly represent various parts and regions.

[0040] Furthermore, in the detailed description below, the designation of components as "1st," "2nd," etc., is intended to distinguish them due to their identical nature, and is not strictly limited to that order in the description below.

[0041] Throughout the specification, when a part is described as including a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0042] FIG. 1 is a schematic diagram illustrating the stator structure of a hairpin winding motor applied to an embodiment of the present invention.

[0043] Referring to FIG. 1, the stator (1) of the hairpin winding motor applied in the embodiment of the present invention can be applied to a drive motor for a hybrid vehicle or an electric vehicle that obtains driving force with electric energy as an eco-friendly vehicle.

[0044] The above-described drive motor includes a rotor (not shown) positioned with a certain air gap from the stator (1), and includes a plurality of permanent magnets (not shown) installed on the rotor.

[0045] The above stator (1) includes a stator core (3) in which multiple electrical steel sheets are laminated.

[0046] Hairpins (10) are wound through a plurality of slots (5) in the stator core (3).

[0047] The above hairpin (10) is made of a square coil and includes a pair of leg portions (13) on both sides based on the head portion (11).

[0048] The above hairpin (10) is configured in a U-shape or V-shape overall and can be formed as a square coil with a square cross-section.

[0049] These hairpins (10) are inserted into a set layer of slots (5) in the stator core (3) (indicated by dashed lines in the drawing).

[0050] The above hairpins (10) are inserted into the stator core (3), and the decoating portion (15) formed at the end of a pair of leg portions (13) protrudes outside the slot (5).

[0051] The above hairpins (10) can form a winding that is electrically connected by the welding joint of the above decoating part (15).

[0052] As described above, although the embodiment of the present invention is described as being applied to the stator (1) of a hairpin winding motor used in an eco-friendly vehicle, the scope of protection of the present invention should not be understood as necessarily being limited thereto, and the technical concept of the present invention can be applied to any motor having hairpins (10) of various types and uses.

[0053] A hairpin alignment device for a hairpin winding motor according to an embodiment of the present invention can be applied to pre-align the hairpin (10) as described above into a slot (21) of a separate dummy core before inserting it into a slot (5) of a stator core of the hairpin winding motor.

[0054] That is, the hairpin alignment device for the hairpin winding motor can be applied to pre-align hairpins (10) in at least one layer in the slot (21) of the dummy core, and then clamp the pre-aligned hairpins (10) at once to insert them into the slot (5) of the stator core.

[0055] FIG. 2 is an overall perspective view of a hairpin alignment device for a hairpin winding motor according to an embodiment of the present invention, and FIG. 3 is a configuration diagram for explaining a rotation unit applied to a hairpin alignment device for a hairpin winding motor according to an embodiment of the present invention.

[0056] Referring to FIG. 2, the hairpin alignment device for the hairpin winding motor includes a rotation unit (30), an alignment unit (40), a guide unit (50), a pressure unit (60), and a handling gripper (70).

[0057] The hairpin alignment device for the hairpin winding motor described above has the rotation unit (30), alignment unit (40), and guide unit (50) interconnected and arranged to overlap.

[0058] Additionally, the pressurizing unit (60) is positioned to operate above the rotating unit (30), the alignment unit (40), and the guide unit (50).

[0059] The handling gripper (70) is positioned adjacent to the rotation unit (30), alignment unit (40), and guide unit (50) and can operate with respect to the rotation unit (30), alignment unit (40), and guide unit (50).

[0060] Referring to FIG. 3, in an embodiment of the present invention, the rotating unit (30) has the dummy core (20) mounted in the center.

[0061] The above-mentioned rotation unit (30) rotates the dummy core (20) at a certain angle corresponding to the shape of the slot (21) of the dummy core.

[0062] That is, a certain angle for rotating the dummy core (20) can be set according to the size of the slot (21) of the dummy core.

[0063] This rotating unit (30) includes a rotating jig (31) and a lower plate (35).

[0064] The above-mentioned rotating jig (31) is connected to the dummy core (20) by clamping at least one mounting block (33) mounted along the side perimeter of the dummy core (20).

[0065] That is, at least one mounting block (33) is configured between the rotating jig (31) and the dummy core (20), and the dummy core (20) is mounted on the rotating jig (31) via the mounting block (33).

[0066] At this time, the dummy core (20) has a structure consisting of radial partitions.

[0067] The slots (21) of the above dummy core are made up of the same number as the slots (5) of the stator core.

[0068] Accordingly, the specifications of the dummy core (20) can be set according to the specifications of the stator core (3) of the hairpin winding motor.

[0069] In addition, it is preferable to design the slot (21) of the dummy core to be larger than the size of the slot (5) of the corresponding stator core.

[0070] The lower plate (35) is placed at the bottom of the dummy core (20).

[0071] The lower plate (35) pushes the hairpin (10), which is aligned in the slot (21) of the dummy core, upward from the dummy core (20).

[0072] This lower plate (35) includes an upper contact portion (37) that contacts the dummy core (20).

[0073] The lower plate (35) is formed with a step downward from the upper contact end (37) and includes a lower contact end (39) that contacts a hairpin (10) inserted into the slot (21) of the dummy core.

[0074] The lower plate (35) operates in the vertical direction and pushes the hairpin (10) upward from the dummy core (20) by the lower contact end (39).

[0075] Accordingly, it is advantageous for the step difference between the upper contact end (37) and the lower contact end (39) to be formed in correspondence with the downward protrusion length of the hairpin (10) inserted into the slot (21) of the dummy core.

[0076] The lower plate (35) is configured to operate only when necessary.

[0077] FIG. 4 is a configuration diagram for explaining an alignment unit applied to a hairpin alignment device for a hairpin winding motor according to an embodiment of the present invention.

[0078] Referring to FIG. 4, in an embodiment of the present invention, the alignment unit (40) is placed on the upper surface of the rotation unit (30) described above.

[0079] The alignment unit (40) is rotated at a certain angle together with the dummy core (20) by the rotation unit (30).

[0080] The alignment unit (40) includes a plurality of push bars (41) arranged along the upper circumference of the dummy core (20).

[0081] These multiple push bars (41) are configured to reciprocate radially with respect to the hairpin (10).

[0082] That is, the plurality of push bars (41) align the hairpin (10) inserted into the slot (21) of the dummy core by pressing it radially inward.

[0083] At this time, it is advantageous for the contact surface (43) that contacts the hairpin (10) of the plurality of push bars (41) to be formed in a round shape.

[0084] The plurality of push bars (41) are arranged radially in the center of a ring-shaped guide plate (45) mounted on the upper part of the rotation unit (30).

[0085] It is advantageous for these multiple push bars (41) to be arranged so that their vertical positions intersect.

[0086] Since the above push bars (41) are gathered inward in the radial direction at the same time, their vertical positions are arranged to intersect in a zigzag pattern, so interference between them can be avoided.

[0087] FIG. 5 is a configuration diagram for explaining a guide unit applied to a hairpin alignment device for a hairpin winding motor according to an embodiment of the present invention.

[0088] Referring to FIG. 5, in an embodiment of the present invention, the guide unit (50) is positioned on the side of the rotation unit (30).

[0089] The guide unit (50) can selectively operate on the hairpins (10) that overlap in each layer when the hairpins (10) are aligned in the slot (21) of the dummy core.

[0090] Within the slot (21) of the dummy core, the first layer is defined as the innermost radially aligned along the circumference of the dummy core (20), the second layer is defined as the outermost radially aligned one more time, and the third layer is defined as the outermost radially aligned one more time.

[0091] At this time, when forming each layer, the hairpin (10) inevitably overlaps with the slot (21) of the dummy core, and when the hairpin (10) begins to overlap, the guide unit (50) operates.

[0092] These guide units (50) are intended to move the overlapping hairpins (10) outward in a radial direction to secure an insertion space for each hairpin (10).

[0093] Accordingly, the guide unit (50) includes a guide bar (51).

[0094] The guide bar (51) is positioned on the upper part of the dummy core (20).

[0095] In addition, one end of the guide bar (51) is bent and positioned on the radial inner side of the hairpin (10).

[0096] The other end of the guide bar (51) is connected to the rotation unit (30) by a connecting bracket (53).

[0097] The guide bar (51) can operate to move outward in the radial direction when the rotation unit (30) rotates by a set angle, thereby moving the corresponding hairpin (10) attached to one end to secure an insertion space within the slot (21) of the dummy core.

[0098] Here, the above setting angle refers to the angle at which the dummy core (20) rotates until the hairpin (10) begins to overlap when each layer is formed.

[0099] The above guide bar (51) can reciprocate radially by means of a first driving unit (55) mounted on a connecting bracket (53).

[0100] FIG. 6 is a configuration diagram for explaining a pressure unit applied to a hairpin alignment device for a hairpin winding motor according to an embodiment of the present invention.

[0101] Referring to FIG. 6, in an embodiment of the present invention, the pressurizing unit (60) is positioned on top of the alignment unit (40).

[0102] This pressurizing unit (60) can press the hairpin (10) aligned in the slot (21) of the dummy core downward to position it correctly.

[0103] The above-mentioned pressure unit (60) includes a frame (61) positioned adjacent to the above-mentioned rotation unit (30) and a pressure plate (62) mounted on the frame (61).

[0104] The above pressure plate (62) is made of a ring-shaped plate.

[0105] The above pressure plate (62) is mounted to the frame (61) so as to be slidably moved by the second driving unit (64).

[0106] The above pressure plate (62) is mounted to the second drive unit (64) through the connecting plate (63).

[0107] The second drive unit (64) includes a horizontal rail (65) into which the connecting plate (63) is fitted, and a servo motor (M1) that slides the connecting plate (63) along the horizontal rail (65).

[0108] The above pressure plate (62) is positioned at the center upper part of the slot (21) of the dummy core by the operation of the second drive unit (64).

[0109] The above pressure plate (62) is configured to reciprocate in the up and down direction by the third drive unit (66) mounted on the second drive unit (64).

[0110] The third drive unit (66) includes a vertical rail (67) mounted on the connecting plate (63) and a servo motor (M2) that slides the pressure plate (62) along the vertical rail (67).

[0111] This pressure plate (62) is intended to press the hairpin (10) inserted into the slot (21) of the dummy core downwards to position it correctly.

[0112] And an embodiment of the present invention may further include a handling gripper (70) disposed adjacent to the rotation unit (30) and inserting the hairpin (10) into the slot (21) of the dummy core (see FIG. 2).

[0113] The above handling gripper (70) may include a multi-joint robot.

[0114] FIGS. 7 to 12 are drawings sequentially illustrating a hairpin alignment method for a hairpin winding motor according to an embodiment of the present invention.

[0115] Referring to FIG. 7, a hairpin alignment method for a hairpin winding motor according to an embodiment of the present invention performs a first step of supplying a hairpin (10) to a slot (21) of a dummy core through a handling gripper (70) (7(a)).

[0116] At this time, the handling gripper (70) supplies the hairpin (10) so that it is inserted into the slot (21) of the dummy core from top to bottom by its own weight.

[0117] Next, a second step is performed in which the alignment unit (40) operates radially inward to press the hairpin (10) into the slot (21) of the dummy core towards the center of the slot (21) of the dummy core (7(b)).

[0118] At this time, a plurality of push bars (41) of the alignment unit (40) simultaneously operate inward in the radial direction and press the hairpin (10).

[0119] Referring to FIG. 8, a pressure plate (62) is then positioned at the upper center of the dummy core (20) (8(a)).

[0120] The above pressure plate (62) is positioned on the upper part of the dummy core (20) corresponding to the center of the dummy core (20) by the second driving unit (64).

[0121] The above pressure plate (62) lowers to press the hairpin (10) downward, proceeding to the third step (8(b)).

[0122] The above pressure plate (62) is lowered by the third driving unit (66) and presses the upper part of the hairpin (10) downward to position the hairpin (10).

[0123] At this time, the end of the decoating part (15) of the hairpin (10) contacts the lower contact end (39) of the lower plate (35).

[0124] Next, the rotation unit (30) rotates the dummy core (20) at a certain angle according to the shape of the slot (21) of the dummy core.

[0125] Then, the above steps 1 through 3 are repeated.

[0126] Referring to FIG. 9, the rotation unit (30) rotates by a set angle, and the lower plate (35) raises the hairpin (10) from the dummy core (20).

[0127] Referring to FIG. 10, the hairpin (10) is then moved outward in the radial direction by the guide unit (50) to secure an insertion space for the hairpin (10), and then a fourth step is performed to insert the next hairpin (10).

[0128] More specifically, in the fourth step, the alignment unit (40), guide unit (50), and dummy core (20) are rotated at a certain angle according to the shape of the slot (21) of the dummy core by the rotation jig (31) of the rotation unit (30).

[0129] Referring to FIG. 11, the setting angle is defined as the rotation angle up to the section where the hairpin (10) overlaps when the hairpin (10) is inserted into the slot (21) of the dummy core along the circumference of the dummy core (20).

[0130] That is, a series of processes is repeated in which a first hairpin (10) is inserted into the slot (21) of the dummy core, the dummy core (20) is rotated by a rotation unit (30) at a certain angle, and then a second hairpin (10) is inserted into the slot (21) of the dummy core.

[0131] The hairpins (10) are inserted sequentially into the slots (21) of the dummy core along the circumference of the dummy core (20), and when the hairpins (10) are inserted while the dummy core (20) rotates by a certain amount (non-interference section), a section where the hairpins (10) overlap is inevitably created (interference section).

[0132] The above setting angle is defined as the angle at which the dummy core (20) is rotated until the section where the hairpin (10) overlaps begins.

[0133] And the guide bar (51) can pull the upper part of the raised hairpin (10) outward in a radial direction to secure an insertion space between adjacent hairpins (10) and hairpins (10).

[0134] With the insertion space formed in this way, the hairpins (10) can be aligned in the required number of layers without interference between the hairpins (10).

[0135] Referring to FIG. 12, finally, the pressure plate (62) is lowered to press the hairpin (10) downward, and the lower plate (35) is also returned to its initial state.

[0136] In addition, after aligning the hairpins (10) on the dummy core (20), the process of clamping the hairpins (10) aligned on the dummy core (20) at once and inserting them into the stator core (3) of the hairpin winding motor is carried out.

[0137] Accordingly, the hairpin alignment device for a hairpin winding motor and the hairpin alignment method using the same according to the embodiment of the present invention can be adapted regardless of the type of stator core (3) and hairpin (10), thereby reducing the initial design cost.

[0138] In addition, the hairpin alignment device for a hairpin winding motor and the hairpin alignment method using the same according to an embodiment of the present invention can align the hairpin (10) without interference by providing an insertion space within the slot (21) of the dummy core by the guide unit (50).

[0139] Accordingly, the hairpin alignment device for the hairpin winding motor and the hairpin alignment method using the same can reduce the overall cycle time and increase accuracy.

[0140] Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the invention without departing from the spirit and scope of the invention as described in the following claims. Explanation of the symbols

[0141] 1: Stator 3: Stator core 5: Stator core slot 10: Hairpin 11: Head section 13: Leg section 15: Decoding section 20: Dummy core 21: Dummy core slot 30: Rotating unit 31: Rotating jig 33: Mounting block 35: Lower plate 37: Upper contact terminal 39: Lower contact terminal 40: Alignment unit 41: Push bar 43: Contact surface 45: Guide plate 50: Guide unit 51: Guide bar 53: Connecting bracket 55: First driving unit 60: Pressurizing unit 61: Frame 62: Pressure plate 63: Connecting plate 64: Second driving unit 65: Horizontal rail 66: Third drive unit 67: Vertical rail 70: Handling gripper

Claims

Claim 1 A hairpin alignment device for a hairpin winding motor that pre-aligns a plurality of hairpins inserted into the hairpin winding motor into at least one layer in the slot of a dummy core, comprising: a rotation unit in which the dummy core is mounted in the center and which rotates the dummy core at a certain angle corresponding to the shape of the slot; an alignment unit disposed on the upper surface of the rotation unit and in which a plurality of push bars disposed along the upper circumference of the dummy core reciprocate radially with respect to the hairpins; and a guide unit disposed on the side of the rotation unit and which, when the hairpins are pre-aligned in the slot, selectively acts on the hairpins overlapping in each layer and moves the overlapping hairpins radially outward to secure an insertion space for the hairpins. A hairpin alignment device for a hairpin winding motor, comprising: a handling gripper disposed adjacent to the rotation unit and supplying the hairpin to the slot; wherein the guide unit comprises a guide bar disposed on the upper part of the dummy core, having one end bent and disposed radially inside the hairpin, and the other end connected to the rotation unit by a connecting bracket, and a first driving unit mounted on the connecting bracket and reciprocating the guide bar in the radial direction. Claim 2 A hairpin alignment device for a winding motor according to claim 1, comprising: a rotating unit clamping at least one mounting block mounted along the side circumference of the dummy core and a rotating jig that rotates the dummy core at a certain angle; and a lower plate disposed at the bottom of the dummy core and pushing a hairpin aligned in the slot upward from the dummy core. Claim 3 A hairpin alignment device for a winding motor according to claim 1, wherein the alignment unit rotates at a certain angle together with the dummy core by the rotation unit, and the plurality of push bars press the hairpins aligned in the slots in the radial direction to position them correctly. Claim 4 In claim 1, the plurality of push bars is a hairpin alignment device for a winding motor, wherein the contact surface in contact with the hairpin is formed in a round shape. Claim 5 A hairpin alignment device for a winding motor according to claim 1, wherein the plurality of push bars are radially arranged in the center of a ring-shaped guide plate mounted on the upper part of the rotating unit and are arranged so as to intersect in a zigzag pattern. Claim 6 delete Claim 7 A hairpin alignment device for a winding motor according to claim 1, wherein the guide bar moves outward in the radial direction when the rotation unit rotates by a set angle, and moves the corresponding hairpin attached to one end to secure an insertion space within the slot. Claim 8 A hairpin alignment device for a hairpin winding motor that pre-aligns a plurality of hairpins inserted into the hairpin winding motor into at least one layer in a slot of a dummy core, comprising: a rotating unit in which the dummy core is mounted in the center and the dummy core is rotated at a certain angle corresponding to the shape of the slot; an alignment unit disposed on the upper surface of the rotating unit and having a plurality of push bars disposed along the upper circumference of the dummy core that reciprocate radially with respect to the hairpins; a guide unit disposed on the side of the rotating unit and selectively operates on the hairpins overlapping in each layer when the hairpins are pre-aligned in the slot, and moves the overlapping hairpins radially outward to secure an insertion space for the hairpins; a handling gripper disposed adjacent to the rotating unit and supplying the hairpins to the slot; and a pressurizing unit disposed on the upper part of the alignment unit and pressing the hairpins pre-aligned in the slot downward to position them correctly. Claim 9 A hairpin alignment device for a winding motor according to claim 8, wherein the pressure unit comprises: a frame disposed adjacent to the rotation unit; and a pressure plate formed of a ring-shaped plate, slidably mounted on the frame by a second drive unit and disposed above the center of the dummy core, and reciprocatingly operating in the up-and-down direction by a third drive unit mounted on the second drive unit to press a hairpin aligned in the slot. Claim 10 A hairpin alignment method for a hairpin winding motor, wherein a plurality of hairpins inserted into a hairpin winding motor are aligned in at least one layer in a slot of a dummy core using a hairpin alignment device for a hairpin winding motor, comprising: a first step of supplying hairpins to the slot by means of a handling gripper; a second step in which an alignment unit operates radially inwardly to press the hairpins within the slot toward the center of the dummy core; and a third step in which a pressure plate descends to press the hairpins downward. A hairpin alignment method for a hairpin winding motor, comprising: a fourth step in which a rotating unit rotates the dummy core at a certain angle according to the shape of the slot of the dummy core, sequentially repeats the first to third steps, and when the rotating unit rotates by a set angle, moves the corresponding hairpin outward in the radial direction with a guide unit to secure an insertion space, and then inserts the next hairpin; wherein the third step is a step in which the pressure plate is positioned in a correct position corresponding to the center of the dummy core by a second driving unit, and the upper part of the hairpin is pressed downward while descending by a third driving unit. Claim 11 A hairpin alignment method for a winding motor according to claim 10, wherein the first step is a step in which the handling gripper supplies the hairpin so that it is inserted into the slot of the dummy core from top to bottom by its own weight. Claim 12 A hairpin alignment method for a winding motor according to claim 10, wherein the second step is a step in which a plurality of push bars of the alignment unit simultaneously operate inwardly in the radial direction to press the hairpin. Claim 13 delete Claim 14 In claim 10, the above-mentioned fourth step is a step of rotating the alignment unit, guide unit, and dummy core by a rotating jig at a certain angle according to the shape of the slot; a hairpin alignment method for a winding motor. Claim 15 A hairpin alignment method for a winding motor, wherein the setting angle of the fourth step is the angle at which the hairpin rotates to the overlapping section when the hairpin is inserted into the slot along the circumference of the dummy core. Claim 16 A hairpin alignment method for a winding motor according to claim 15, wherein the fourth step comprises: a step of raising the hairpin from the dummy core by a set angle when the dummy core is rotated by the rotation unit; and a step of securing an insertion space between adjacent hairpins by pulling the upper part of the raised hairpin radially outward with a guide bar. Claim 17 A hairpin alignment method for a winding motor according to claim 15, further comprising a fifth step of clamping the hairpins pre-aligned in the dummy core at once and inserting them into the hairpin winding motor after the fourth step.

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