WO2019111502A1

WO2019111502A1 - Wire coating stripping method, wire coating stripping device, and rotary electric machine production device

Info

Publication number: WO2019111502A1
Application number: PCT/JP2018/035883
Authority: WO
Inventors: 裕治宮崎; 宮脇　伸郎
Original assignee: 株式会社小田原エンジニアリング
Priority date: 2017-12-07
Filing date: 2018-09-27
Publication date: 2019-06-13
Also published as: JP7054171B2; JP2019103360A

Abstract

In order to prevent coating residue or over-stripping and to suppress reduction in output from a rotary electric machine caused by reduction in conductivity of a connection section, when stripping an insulated coating off a wire having the outer circumference thereof coated in the coating: a first stripping member (17) pivots in the direction of an arrow (R1) intersecting the longitudinal direction of the wire (6); a blade tip (17a) of the first stripping member moves in parallel to a horizontal flat surface (6a) of the wire (6); and part of the coating (16) and a conductor (15) are stripped at that location. Once the stripping of the horizontal flat surface (6a) has been completed: a second stripping member (18) pivots in the direction of an arrow (R2) intersecting the longitudinal direction of the wire (6); the blade tip (17a) thereof moves parallel to the horizontal flat surface (6b) of the wire (6); and part of the coating (16) and the conductor (15) are stripped at that location.

Description

Method of peeling coating of wire, coating peeling device of wire, and manufacturing apparatus of rotary electric machine

The present invention relates to a method of peeling a coating of a wire partially removing a coating of a wire whose outer periphery is covered with an insulating coating, a coating peeling apparatus of a wire and a manufacturing apparatus of a rotating electrical machine, in particular, a motor or a generator. Film stripping method for wire rod suitable for forming coil segments used for forming a coil of a stator or rotor in a rotating electrical machine (rotating machine) such as a machine, etc. About.

A plurality of coil segments formed by processing linear wires of a predetermined length into a U shape in a plurality of slots arranged along the circumferential direction of the stator or rotor as coils of a stator or rotor in a rotating electrical machine Hereinafter, so-called segment-type coils are known, in which each of the segments is simply inserted, the free end side (the tip end side in the insertion direction) is twist-processed, and electrically connected to each other by welding or the like. This type of coil segment is also referred to as a hairpin and the U-shape is also referred to as a pine leaf shape.

The U-shaped segment of such a segment coil takes out a flat wire as a wire wound around a drum and corrects the distortion in the longitudinal direction, and then both ends of a predetermined length corresponding to the target segment shape The insulating film in (1) is peeled off in a straight line, and the central portion of the peeled portion is cut and bent into a U shape.

As a method of peeling the insulating film, there is a method of peeling with a laser, a method of simultaneously peeling both surfaces with a rotary grindstone whose rotation axis is orthogonal to the longitudinal direction of the coated conductor wire, as described in Patent Document 1 Are known.

Patent No. 3855247 gazette

In the laser peeling method, the peeling device is expensive, and not only the peeling device but also the coil segment forming device becomes expensive, which leads to the price increase of the manufacturing device of the rotary electric machine. The mechanical peeling system disclosed in Patent Document 1 can solve the problem of price increase as compared with the laser peeling method.
However, in the peeling method by the rotary grinding wheel described in Patent Document 1, when the bond between the film and the conductor is strong, the film remains on the conductor surface after peeling, the surface is roughened by abrasive grinding, or the film remains. If the contact pressure of the grinding wheel against the wire is increased to eliminate it, the cross-sectional area of the conductor is reduced due to excessive cutting. As a result, there is a problem that the conductivity of the connection portion is reduced, and the output of the rotating electrical machine is reduced.

The present invention has been made in view of such a present situation, and when peeling the film of the wire covered with the insulating film on the outer periphery, the film residue is prevented from being left over or scraped off, and the conductivity of the connection portion An object of the present invention is to suppress a decrease in output of a rotating electrical machine due to a decrease.

The film peeling method of a wire according to the present invention is a film peeling method of a wire which partially peels off the film of a linear wire covered with an insulating film on the outer periphery, in order to achieve the above object, The cutting member is pivotally moved in a direction intersecting with the longitudinal direction of the wire at a portion of the wire to be peeled to peel the coating.

When the wire has a rectangular cross-section, the cutting edge of the cutting member may be moved parallel to at least one of four planes of the wire having a rectangular cross-section.

In that case, one of the four flat surfaces of the wire is peeled off with a first cutting member, the flat surface facing the one flat surface is peeled off with a second cutting member, and the first cutting member and It is preferable to shift the timing of the peeling operation of the second cutting member.

The turning movement direction of the first cutting member and the second cutting member is opposite to each other, and one of the first cutting member and the second cutting member is moved to perform the peeling operation. At the same time, the other may be used as a pressing member for pressing at least a part of planes other than the plane to be peeled out of the four planes of the wire.

The film stripping apparatus for a wire according to the present invention is a film stripping apparatus for a wire for partially stripping a film of a linear wire covered with an insulating coating on its outer periphery, and in order to achieve the above object, the wire A cutting member disposed so as to peel at least the coating on the portion to be peeled, and a drive mechanism for pivoting the cutting member in a direction intersecting the longitudinal direction of the wire. Do.

When the wire has a rectangular cross-section, the cutting member may have a cutting edge moving parallel to at least one of four planes of the wire having a rectangular cross-section.

The driving mechanism includes a first cutting member for peeling one of four flat surfaces of the wire and a second cutting member for peeling a flat surface opposite to the one flat, Preferably, the mechanism has a mechanism for pivoting the first cutting member and the second cutting member separately.

The drive mechanism reverses the rotational movement direction of the first cutting member and the second cutting member with respect to the wire, and the timing of the peeling operation of the first cutting member and the second cutting member You should shift the

When one of the first cutting member and the second cutting member is moved to perform a peeling operation, the other is at least a part of a plane other than the peeled plane of the four flat surfaces of the wire rod It is good to function as a pressing member which holds down.

The apparatus for manufacturing a rotating electrical machine according to the present invention comprises a wire supply portion for supplying a linear wire covered at its outer periphery with an insulating film, and a bending process for bending a wire having a predetermined length supplied from the wire supply portion. And a coil assembly device that assembles a coil segment bent by the bending portion in correspondence with a slot of the rotating electric machine, and the wire feeding portion is provided with a coating at both ends of the wire of the predetermined length. It is characterized by having a film peeling apparatus of the above-mentioned any wire as a film peeling apparatus of the wire which peels.

According to the present invention, when peeling the coating of the wire covered with the insulating coating on the outer periphery, it is possible to prevent the remaining coating or excessive shaving and to suppress the output decrease of the rotary electric machine due to the decrease of the conductivity of the connection portion. Can.

It is a figure which shows roughly a partial structure of the manufacturing apparatus of the rotary electric machine which concerns on one Embodiment of this invention, (a) is a top view, (b) is a side view. It is a perspective view which shows the arrangement | positioning relationship and the movement direction of the 1st cutting member and the 2nd cutting member with respect to the wire in the film peeling apparatus of the wire provided in the manufacturing apparatus of the rotary electric machine shown in FIG. It is a top view which shows the change of the turning movement of the 1st, 2nd cutting member with respect to the wire shown in FIG. 2, (a) is a figure about a 1st cutting member, (b) is about a 2nd cutting member FIG. It is a general | schematic side view for demonstrating the peeling operation by the 1st cutting member shown in FIG. 2, and a 2nd cutting member, (a) shows the state before starting the peeling operation by a 1st cutting member FIG. 7B is a view showing a state in which the peeling operation by the first cutting member is completed, and FIG. 7C is a view showing a state in which the peeling operation by the second cutting member is completed. It is a schematic perspective view which shows the whole structure of the film peeling apparatus of the wire in FIG. It is a schematic side view which similarly shows the whole structure of the film peeling apparatus of the wire. It is a perspective view which shows the fixed structure of the 1st cutting member of the lower cutting member support body shown in FIG.5 and FIG.6. It is the perspective view seen from the lower side which shows the fixed structure of the 2nd cutting member of the upper cutting member support body shown in FIG.5 and FIG.6. It is a schematic plan view which shows the structure of the drive mechanism which carries out the rotational movement of the 1st cutting member shown in FIG.5 and FIG.6. It is a schematic plan view which shows the structure of the drive mechanism which carries out the rotational movement of the 2nd cutting member shown in FIG.5 and FIG.6. It is a principal part side view showing the support composition of the drive source which makes the 2nd cutting member turn and move similarly.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the embodiment described below, a flat wire having a rectangular cross section is described as the wire, but it is a wire having, for example, a round shape, a square shape, a pentagon or more polygonal shape, or any other cross sectional shape The present invention is also applicable.

As shown in FIG. 1, the manufacturing apparatus 100 for a rotating electrical machine such as a motor or generator according to this embodiment includes a coil segment forming apparatus 1 and coil segments formed by the coil segment forming apparatus 1 in the circumferential direction of the rotating electrical machine. And a coil assembly device 2 for assembling in correspondence with the slots arranged annularly. The coil segment forming apparatus 1 includes a wire rod supply unit 3, a primary bending portion 4 and a secondary bending portion 5.

The primary bending portion 4 bends a linear wire having a predetermined length supplied from the wire supply portion 3 into a predetermined shape (e.g., a U-shape) in the same plane (horizontal plane in the present embodiment). The secondary bending portion 5 is formed by bending the coil segment (primary bending formed body) bent at the primary bending portion 4 in a plane (vertical plane in the present embodiment) perpendicular to the axis of the coil segment and the above-mentioned plane At the same time as bending is performed, a shape (crank shape) for giving a slot insertion portion of the coil segment in the radial direction of the core is given to a tip end portion thereof.

The wire supply unit 3 includes a bobbin 7 wound with a wire 6 consisting of a flat wire covered with an insulating layer, a feeding direction changing unit 8 for pulling out the wire 6 from the bobbin 7 and changing the supply direction, and a correction conveyance unit 9 and the peeling part 10 as a film peeling apparatus of a wire, and the cutting part 11 are provided.
The correction conveyance unit 9 includes a plurality of roller pairs 9a which sandwich and convey the wide flatwise surface of the wire 6 and a plurality of roller pairs 9b which sandwich and convey the narrow edgewise surface of the wire 6. , The distortion in the longitudinal direction of the wire 6 is corrected.

The peeling part 10 peels the coating insulation layer (coating) in the both ends corresponding to the predetermined length of the wire 6 by which the distortion was corrected. The cutting unit 11 cuts the wire 6 which has passed through the peeling unit 10 at a predetermined length position.
As will be described later, the peeling section 10 in the present embodiment adopts a mechanical peeling method in which the peeling range (site to be peeled) is scraped and peeled by the cutting member. The peeling range by the peeling part 10 contains the peeling part of the one-side edge part of the following wire material. Therefore, the cutting part 11 is comprised so that the wire 6 may be cut | disconnected in the center part of the peeling range.

The wire 6 bent by the primary bending portion 4, that is, the primary bending molded body 12 bent in a U-shape, is a transfer mechanism 13 disposed between the primary bending portion 4 and the secondary bending portion 5. Is transferred to the secondary bending unit 5. The transfer mechanism 13 is provided with a pair of chucks (not shown) formed by an air cylinder, and the pair of chucks pivots due to bending of both legs (one pair of slot inserting portions) of the primary bending molded body 12 It stands by in the state where the chuck piece is opened to the coming range.

When the chuck portion grips both legs of the primary bending molded body 12, the transfer mechanism 13 ascends to remove the primary bending molded body 12 from the primary bending portion 4 and transfers it to the secondary bending portion 5. The end portions of both legs of the primary bending formed body 12 transferred by the transferring mechanism 13 are held by the holding member 14. The transfer mechanism 13 which has delivered the primary bending formed body 12 to the holding member 14 is retracted, and the coil end portion (crossover portion) side is opened in space, and the secondary bending portion 5 with respect to this coil end portion The bending process including the bending of the step shape (crank shape) due to

The coil assembly device 2 performs secondary bending while rotating (index rotating) a drum provided with a plurality of accommodation grooves on its circumferential surface by a predetermined amount each time a secondary bending product finished to be bent by the secondary bending portion 5 It arrange | positions one by one, pressing by holding members, such as a belt, so that a molded object may not fall off. After placement of a predetermined number of layers of secondary bending molded articles, the segment coil of temporary construction on the drum is pushed out in the axial direction of the drum by the pushing mechanism and inserted into the slot of the stator or rotor previously arranged on the pushing side. Ru.

In the configuration shown in FIG. 1, the supply direction changing unit 8 of the wire supply unit 3, the correction conveyance unit 9, the peeling unit 10 and the cutting unit 11, and the primary bending unit 4 are in the lateral direction in FIG. The secondary bending portion 5 is disposed in a row, and the secondary bending portion 5 is disposed in the vertical direction (perpendicular direction) in FIG. 1A with respect to the primary bending portion 4, and the coil assembly device 2 is disposed relative to the secondary bending portion 5. It is disposed in the lateral direction in FIG. However, the supply direction changing unit 8, the correction conveyance unit 9, the peeling unit 10, the cutting unit 11, the primary bending unit 4, the secondary bending unit 5, and the coil assembling device 2 are in the lateral direction in FIG. It may be arranged in a single row. That is, regarding the arrangement of the coil segment forming portion and the coil assembly portion, there is no limitation on the layout as long as the coil formation is completed in a single manufacturing apparatus.

Next, although the structure of the peeling part 10 as a film peeling apparatus of a wire is demonstrated concretely, the mechanism of the peeling by the peeling part 10 is first demonstrated with reference to FIG.2 and FIG.3.

As shown in FIG. 2, a partially enlarged cross-sectional view taken along the line XX is shown in a circle of a dashed dotted line, the wire 6 has a conductor 15 having a square cross section and a coating 16 covering the outer periphery of the conductor 15. It is a flat wire having a square cross section as a whole. The four corners of the conductor 15 are rounded so as not to damage the coating 16 at the edges thereof and to inhibit the insulation. The material of the conductor 15 here is copper, and the material of the film 16 is made of insulating resin, but it is not limited to these materials.

At the portion W of the wire 6 shown in FIG. 2 to be peeled off, the pair of cutting

members

17 and 18 are disposed in an opposing state. The first cutting member 17 which is one of the cutting members has a cutting edge 17a parallel to the horizontal plane 6a on the lower side (one side) of the wire rod 6, and is responsible for the separation of the horizontal plane 6a. The second cutting member 18, which is the other cutting member, has a cutting edge 18a parallel to the horizontal flat surface 6b on the upper side (the other side) of the wire rod 6, and is responsible for peeling off the horizontal flat surface 6b.
The lower horizontal flat surface 6a of the wire 6 to which the first cutting member 17 corresponds is a wide flatwise surface as one of four rectangular flat surfaces, and the second cutting member 18 corresponds thereto. The upper horizontal plane 6b is a wide flatwise surface as a plane opposite to the one plane.

The first cutting member 17 and the second cutting member 18 are supported by the below-described cutting member support, which is separately rotated, so as to pivot relative to the wire 6 in the opposite direction and at different peeling timings. It has become. In FIG. 2, the thin broken line a indicates the trajectory of the cutting edge 17 a in the turning movement of the first cutting member 17 in the arrow R1 direction (counterclockwise direction), and the thin solid line b indicates the arrow R2 of the second cutting member 18. The locus | trajectory of the blade tip 18a in the turning movement of a direction (clockwise direction) is shown. Here, the turning movement means a movement rotating around a fulcrum (turning center) at a constant radius.

FIG. 3A is a plan view of the posture (solid line) of the first cutting member 17 at the peeling start position (cutting start position) and the posture (two-dot chain line) at the peeling end position (cutting end position). Is shown. As apparent from the figure, the blade edge 17a of the first cutting member 17 is in a non-contact state with the vertical plane 6c which is the side surface (edge-wise surface) of the wire 6 at the peeling start position, and the vertical plane It is located obliquely with an angle to 6c. For this reason, the entire cutting edge 17a does not simultaneously hit the wire 6 at the start of peeling, so that the biting load can be reduced, and fluctuations in the biting depth of the cutting edge 17a with respect to the conductor 15 can be suppressed.

At the peeling end position, the cutting edge 17a is separated beyond the opposite vertical plane 6d. When the first cutting member 17 is based on the left end of the cutting edge 17a in the drawing, the first cutting member 17 pivots with a radius r about a fulcrum (turning center) P and completely peels off the portion W of the wire 6 to be peeled. The displacement angle (direction change angle) θ1 of the attitude of the first cutting member 17 due to this turning movement is approximately 15 °. The turning center P is located on the center line 6 e of the flatwise surface of the wire 6.
By positioning the turning center P on the center line 6 e of the wire 6, it is possible to minimize the amount of turning movement of the first cutting member 17 for completely peeling the portion W to be peeled. On the right end side of the first cutting member 17 in the figure, a relief 17b is formed by chamfering substantially at right angles in order to avoid that the portion other than the cutting edge 17a in the portion W to be peeled hits the wire 6. .

The same applies to the second cutting member 18. That is, FIG. 3B shows the posture (solid line display) of the second cutting member 18 at the peeling start position (cutting start position) and the posture (two-dot chain line display) at the peeling end position (cutting end position). It is shown on a plane. As is apparent from the figure, the cutting edge 18a of the second cutting member 18 is in non-contact with the vertical plane 6d which is the side surface (edge-wise surface) of the wire 6 at the peeling start position, and the vertical plane 6d It is positioned obliquely with an angle to. Therefore, the entire cutting edge 18a does not simultaneously hit the wire 6 at the start of peeling, so that the biting load can be reduced, and the fluctuation of the biting depth of the cutting edge 18a with respect to the conductor 15 can be suppressed.

At the peeling end position, the blade edge 18a is separated beyond the opposite side surface 6c. The second cutting member 18 pivots at a radius r about a fulcrum (pivot center) P when the left end of the cutting edge 18a in the drawing is a reference, and completely peels off the portion W of the wire 6 to be peeled. The displacement angle (direction change angle) θ2 (= θ1) of the attitude of the second cutting member 18 due to this turning movement is approximately 15 °. The turning center P is located on the center line 6 e of the flatwise surface of the wire 6.
By positioning the turning center P on the center line 6 e of the wire 6, it is possible to minimize the amount of turning movement of the second cutting member 18 for completely peeling the portion W to be peeled. On the right end side of the second cutting member 18 in the figure, a relief 18b is formed by chamfering at a substantially right angle in order to avoid that the portion other than the cutting edge 18a hits the wire 6 in the portion W to be peeled off. .

Next, the outline of the configuration of the peeling unit 10 will be described with reference to FIGS. 5 and 6. The peeling part 10 is, as shown in FIG. 5, a base 19, wire rod conveyance guides 20 A and 20 B disposed in a separated state at the center of the base 19 to carry the wire rod 6, and wire rod conveyance guides 20 A in the base 19, The lower cutting member support 21 arranged on the lower side of 20 B and supporting the first cutting member 17 responsible for peeling the lower surface of the wire 6 and the lower cutting member support 21 so that the first cutting member 17 pivots And a lower rotation drive mechanism 22 which is rotationally driven.

The peeling unit 10 further includes an upper base 24 supported and fixed in parallel to the base 19 on the base 19 via a column 23 and the like, a lifting plate 62 provided to be able to move up and down below the upper base 24, An upper and lower driving mechanism 25 for driving the plate 62, an upper cutting member support 26 disposed on the upper side of the wire

rod conveying guides

20A and 20B and supporting the second cutting member 18 responsible for peeling the upper surface of the wire 6; An upper rotation drive mechanism 27 and the like are provided to rotationally drive the support 26 so that the second cutting member 18 swings.

As shown in FIG. 6, bolt screws 28 for height adjustment are provided at the four corners of the base 19 so that the horizontal position of the upper surface of the base 19 can be adjusted.
As shown in FIG. 5, the wire rod conveyance guide 20A has a support base 29 fixed to the base 19, and a guide member 30 having an insertion hole 30a (see FIG. 11) through which the wire rod 6 can be inserted in a sliding manner. doing. Similarly, the wire rod transport guide 20B also has a support base 31 fixed to the base 19, and a guide member 32 having an insertion hole 32a through which the wire rod 6 can be inserted in a sliding manner.

As shown in FIG. 6, the lower cutting member support 21 includes an annular fixing portion 33 fixed to the base 19 and a rotation supporting cylinder 35 rotatably provided on the fixing portion 33 via a bearing 34. ing. As shown in FIG. 7, the first cutting member 17 is partially embedded in the upper surface of the rotation support cylinder 35 and is detachably fixed by means such as a screw. The upper cutting member support 26 is, as shown in FIG. 6, an annular fixing portion 36 fixed to the lower surface of the lift plate 62, and a rotation supporting cylinder 38 rotatably provided on the fixing portion 36 via a bearing 37. And have.
As shown in FIG. 8, a part of each of the second cutting member 18 and the pressing member 39 is accommodated in the embedded state and detachably fixed to the lower surface of the rotation support cylinder 38 by means such as a screw. There is. The code | symbol CL of FIG. 7 has shown the cutting line by the cutting part 11. As shown in FIG.

As shown in FIG. 5, the lower rotation drive mechanism 22 that drives the rotation support cylinder 35 so that the first cutting member 17 pivots moves the bracket 40 fixed to the base 19 and the shaft pin 41 to the bracket 40. The air cylinder 42 as a drive source supported so as to be able to horizontally rotate via an arm 43, and an arm 43 fixed at one end to the rotation support cylinder 35 by a bolt screw or the like. The other end of the arm 43 is horizontally movably connected to the end of the rod of the air cylinder 42 via the shaft pin 44 and the joint 63.

The upper rotary drive mechanism 27 which drives the rotary support cylinder 38 so that the second cutting member 18 (see FIG. 8) pivots, includes an L-shaped bracket 45 fixed to the elevating plate 62 and the bracket 45 It has an air cylinder 47 as a drive source supported so as to be horizontally rotatable via an axial pin 46, and an arm 48 whose one end is fixed to the rotation support cylinder 38 by a bolt screw or the like. The other end of the arm 48 is connected to the end of the rod of the air cylinder 47 via a shaft pin 49 and a joint 64 so as to be horizontally displaceable.

As shown in FIG. 6, the lift drive mechanism 25 for lifting and lowering the lift plate 62 includes an air cylinder 50 as a drive source fixed to the upper surface of the upper base 24 and a linear motion guide (straight line by rolling) supporting the lift plate 62. And a rod 50 a of the air cylinder 50 is connected to the lift plate 62. A restricting member 61 for restricting the lifting position of the lifting plate 62 is fixed to the rod 50a, and the lifting plate 62 moves up and down (vertical movement), in other words, the second cutting member 18 with respect to the upper surface of the wire 6 The approach and separation of the pressing member 39 is performed in the range of the dimension h. FIG. 6 shows a state in which the elevating plate 62 is lowered, that is, a state in which the upper surface of the portion of the wire 6 to be peeled can be peeled off by the second cutting member 18.

The linear motion guide 51 has two rails 53 fixed to a vertical plate 52 supporting the upper base 24, and a slider 54 sliding on the rails 53.
As shown in FIG. 5, the support side end 62 a of the lift plate 62 is formed in a T-shape, and the support side end 62 a is fixed to the slider 54. With this configuration, when the air cylinder 50 operates, the lift plate 62 smoothly moves in the vertical direction.
As shown in FIG. 6, the attachment of the vertical plate 52 to the base 19 is reinforced by the vertical bracket 55, and the support of the upper base 24 to the vertical plate 52 is reinforced by the horizontal bracket 56.

A support base 57 is fixed on the base 19 on the lower end side of the vertical plate 52, and when the lower surface (horizontal plane 6 a) of the wire 6 is peeled off by the first cutting member 17 on the support base 57, A pressing member 58 for pressing the vertical flat surface 6d of the wire 6 positioned on the downstream side of the first cutting member 17 in the turning movement direction is fixed in a cantilever state so as to extend in the horizontal direction.

FIG. 9 is a schematic plan view showing the configuration of a drive mechanism for pivotally moving the first cutting member shown in FIGS. 5 and 6. The peeling operation of the coating 16 of the wire 6 by the first cutting member 17 and the second cutting member 18 is performed between the wire conveyance guides 20A and 20B, that is, the portion where the wire 6 is exposed, as shown in FIG. . In other words, the peeling operation is performed in a state in which both sides in the longitudinal direction of the wire 6 are supported by the wire conveyance guides 20A and 20B. On the upper surface of the rotation support cylinder 35 of the lower cutting member support 21, the wire rod transport guides 20A and 20B and the pressing member 58 are accommodated, and the

recesses

35a and 35b allow rotation of the rotation support cylinder 35 in a state of accommodating these. Is formed.

When the air cylinder 42 operates and the arm 43 rotates from the position shown by the solid line to the position shown by the two-dot chain line, and the rotation support cylinder 35 rotates in the counterclockwise direction (direction R1) in FIG. As described above, the first cutting member 17 is pivoted from the state shown by the solid line and displaced to the position shown by the two-dot chain line. Thus, the lower surface side of the portion W of the wire 6 to be peeled off is peeled off. The turning center P in the turning movement of the first cutting member 17 in this case is the rotation center of the rotation support cylinder 35 and is located at the width direction center (center line 6 e) orthogonal to the longitudinal direction of the wire 6.

FIG. 10 is a schematic plan view showing the configuration of a drive mechanism for pivotally moving the second cutting member shown in FIGS. 5 and 6. As shown in FIG. 10, when the air cylinder 47 operates and the arm 48 rotates from the position shown by the solid line to the position shown by the two-dot chain line, and the rotation support cylinder 38 rotates in the clockwise direction (R2 direction) in the figure. As described in FIG. 3B, the second cutting member 18 is pivoted from the state shown by the solid line and displaced to the position shown by the two-dot chain line. As a result, the upper surface side of the portion W of the wire 6 to be peeled off is peeled off. The turning center P in the turning movement of the second cutting member 18 in this case is the rotation center of the rotation support cylinder 38 and is located at the width direction center (center line 6 e) orthogonal to the longitudinal direction of the wire 6.

FIG. 11 is a main part side view showing a supporting structure of a drive source for turning the second cutting member 18, and a connecting structure of the lift plate 62 and the air cylinder 47 is viewed from the upstream side of the wire 6 in the conveying direction. It is an outline side view.

As shown in FIG. 9, a stopper 59 having an adjustment screw 59 a is disposed in the rotation range of the arm 43 on the base 19. A screw 60 is attached to the side surface of the arm 43, and the head of the screw 60 abuts on the adjusting screw 59a, whereby the rotational position of the rotation support cylinder 35, ie, the downstream position of the pivoting movement of the first cutting member 17 Is regulated.

Here, with reference to FIG. 4, the peeling operation by the first cutting member 17 and the second cutting member 18 will be described.
FIG. 4A shows a state before the lower surface side of the portion of the wire 6 to be peeled off is peeled off by the first cutting member 17. By lowering the lift plate 62 shown in FIGS. 5 and 6, the horizontal flat surface 6 b on the upper side of the portion of the wire 6 to be peeled off is held by the holding member 39. Further, the vertical plane 6 d on the downstream side of the turning movement direction of the first cutting member 17 of the wire 6 is pressed by the tip end portion 58 a of the pressing member 58.

When the first cutting member 17 pivots in the direction of the arrow R1 in this state, as shown in FIG. 4B, one of the coating 16 and the conductor 15 on the lower horizontal plane 6a of the wire 6 (see FIG. 2) Department is scraped off. That is, the lower surface of the portion of the wire 6 to be peeled off is peeled off.
In this case, the upper horizontal plane 6 b is only pressed by the pressing member 39. That is, since cutting is not performed in the opposite horizontal plane 6b as in the double-sided simultaneous cutting method, the pressing force (resistance) from the horizontal plane 6b side to the horizontal plane 6a side is weak, and the depth of cut by the first cutting member 17 Never get deeper than a certain level. Thus, minimal cutting of the conductor 15 is possible for complete stripping of the coating 16 in the horizontal plane 6a.

As shown in FIG. 4B, when the cutting edge 17a of the first cutting member 17 exceeds the vertical flat surface 6d of the wire 6 positioned on the downstream side of the turning movement direction of the first cutting member 17, the first cutting is performed. The vertical surface 17 c of the relief 17 b (see FIG. 3A) of the member 17 abuts on the vertical plane 6 c on the upstream side of the wire 6. The pivoting of the arm 43 shown in FIG. 9 is restricted by the stopper 59 so that the pressing of the vertical surface 17c against the vertical plane 6c is not excessively applied. The contact pressure of the vertical surface 17 c with respect to the vertical flat surface 6 c of the wire 6 can be adjusted by the rotation of the adjustment screw 59 a of the stopper 59. The rotation restriction of the arm 43 by the stopper 59 is also responsible for preventing the blade edge 17 a of the first cutting member 17 from coming into contact with the pressing member 58.

When the separation of the horizontal plane 6a due to the turning movement of the first cutting member 17 is completed, as shown in FIG. 4C, the position of the first cutting member 17 is kept unchanged by the upper rotation driving mechanism 27. The second cutting member 18 pivots with the pressing member 39 in the direction opposite to the first cutting member 17 (in the direction of the arrow R2), and the coating 16 and the conductor 15 in the upper horizontal plane 6b of the wire 6 (see FIG. 2) Some are scraped off. That is, the upper surface of the portion of the wire 6 to be peeled off is peeled off.

In this case, the lower horizontal plane 6a is only pressed by the horizontal surface 17d of the relief portion 17b of the first cutting member 17. That is, since cutting is not performed on the opposite horizontal flat surface 6a as in the double-sided simultaneous cutting method, the pressing force (resistance) from the horizontal flat surface 6a to the horizontal flat surface 6b is weak, and the depth of cut by the second cutting member 18 Never get deeper than a certain level. Thus, minimal cutting of the conductor 15 is possible for complete stripping of the coating 16 in the horizontal plane 6b.

Further, the vertical surface 17c of the relief portion 17b (see FIG. 3A) of the first cutting member 17 is a turning movement of the second cutting member 18 when the second cutting member 18 peels off the horizontal plane 6b. It functions as a pressing member for pressing the vertical flat surface 6c of the wire 6 at the downstream side in the direction.
As described above, if one of the first cutting member 17 and the second cutting member 18 doubles as the pressing member at the time of peeling of the other, the number of necessary pressing members can be reduced, and the configuration is simple. Position of the wire 6 at the time of peeling can be prevented. In the peeling operation by the second cutting member 18, since a problem due to excessive turning movement of the second cutting member 18 does not occur, a member corresponding to the stopper 59 for limiting the rotation of the arm 48 is not provided.

When the peeling by the second cutting member 18 is completed, the elevating plate 62 is raised by the dimension h in FIG. 6, and the second cutting member 18 and the pressing member 39 are separated upward from the upper surface of the wire 6. At an appropriate timing, the air cylinder 47 shown in FIG. 5 operates to rotate the rotation support cylinder 38 of the upper cutting member support 26 and set the second cutting member 18 at the peeling start position. In addition, the air cylinder 42 operates, the rotation support cylinder 35 of the lower cutting member support 21 rotates, and the first cutting member 17 is set at the peeling start position to be separated from the wire 6 in the horizontal direction.

Thereafter, the wire 6 is conveyed toward the primary bending portion 4 shown in FIG. 1 by a predetermined amount (arrow S direction in FIG. 9), and the next portion to be peeled is located between the wire conveyance guides 20A and 20B. Do. Thereafter, the elevating plate 62 is lowered to be in the state shown in FIG. 4A, and the peeling operation described above is repeated. The portion of the wire 6 to be peeled off is then peeled off the coating of the vertical

flat surfaces

6c and 6d by an appropriate means at an appropriate timing, and then the longitudinal central portion of the wire 6 is cut at the cutting portion 11.

As described above, in the present embodiment, the timing of the peeling operation of the first cutting member 17 and the second cutting member 18 is shifted so that one cutting pressure does not affect the other. The difference in the timing of this peeling operation is not only the difference in the timing to start the peeling operation of the other cutting member after the peeling operation by one cutting member is completed but also before the peeling operation of one cutting member is completed, In other words, it also includes the case where the peeling operation of the other cutting member is started at a time not influenced by the cutting pressure of the other cutting member.

In the above embodiment, the first cutting member 17 and the second cutting member 18 are pivoted in the direction crossing the longitudinal direction of the wire 6 in the opposite direction, and the timing of the peeling operation is shifted. The invention is not limited to this. In the case where the single cutting member is pivoted to peel, the first cutting member 17 and the second cutting member 18 are pivoted in the same direction, in which case the timing of the peeling operation is shifted, and the like.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to such specific embodiments, and the gist of the present invention described in the claims unless otherwise specified in the above description. Within the scope of the above, various modifications and changes are possible. The effects described in the embodiments of the present invention only exemplify the most preferable effects resulting from the present invention, and the effects according to the present invention are not limited to those described in the embodiments of the present invention .

DESCRIPTION OF SYMBOLS 1 coil segment forming apparatus 2 coil assembling apparatus 3 wire rod supply part 4 primary bending part 5 secondary bending part 6 wire rod 6 a horizontal plane 6 b horizontal plane 7 bobbin 10 peeling part 11 cutting part 15 conductor 16 film 17 first cutting member 18

Second cutting member

20A, 20B Wire rod conveyance guide 21 Lower cutting member support 22 Lower rotation drive mechanism 26 Upper cutting member support 27 Upper

rotation drive mechanism

39, 58 Holding member 100 Manufacturing device for rotary electric machine W Parts to be peeled off

Claims

It is the film peeling method of the wire which peels partially this film of the linear wire which the outer periphery was coat | covered with the insulating film,
A film peeling method of a wire, wherein the cutting member is pivoted in a direction crossing the longitudinal direction of the wire at a portion of the wire to be peeled to peel the film.
The wire according to claim 1, wherein the wire has a rectangular cross-section, and the cutting edge of the cutting member is moved parallel to at least one of four planes of the wire having a rectangular cross-section. Wire stripping method.
One of four planes of the wire is separated by a first cutting member, and a plane opposite to the one surface is separated by a second cutting member, and the first cutting member and the second cutting member are separated. The film peeling method of the wire according to claim 2, wherein the timing of the peeling operation of the cutting member is shifted.
The turning movement direction of the first cutting member and the second cutting member is opposite to each other, and one of the first cutting member and the second cutting member is moved to perform the peeling operation. 4. The method according to claim 3, wherein the other of the four flat surfaces of the wire is used as a pressing member for pressing at least a part of the flat surface other than the flat surface to be peeled.
A wire stripping apparatus for partially stripping off a coating of a linear wire covered with an insulating coating on its outer periphery, comprising:
Having a cutting member arranged to peel at least the coating of the portion of the wire to be peeled off, and a drive mechanism for pivoting the cutting member in a direction intersecting the longitudinal direction of the wire Film stripping device for wire rod.
The wire has a rectangular cross-section, and the cutting member has a cutting edge moving parallel to at least one of four planes of the wire having a rectangular cross-section. The film peeling apparatus of the wire according to claim 5.
The driving mechanism includes a first cutting member for peeling one of four flat surfaces of the wire and a second cutting member for peeling a flat surface opposite to the one flat, The film stripping device for a wire according to claim 6, wherein the mechanism has a mechanism for pivoting the first cutting member and the second cutting member separately.
The driving mechanism reverses the turning movement direction of the first cutting member and the second cutting member and shifts the timing of the peeling operation of the first cutting member and the second cutting member. The film peeling apparatus of the wire according to claim 7 characterized by the above-mentioned.
When one of the first cutting member and the second cutting member is moved to perform a peeling operation, the other is at least a part of a plane other than the peeled plane of the four flat surfaces of the wire rod 9. The film stripping apparatus for a wire according to claim 8, which functions as a pressing member for pressing.
A wire supplying portion for supplying a linear wire covered with an insulating coating on the outer periphery, a bending portion for bending a wire having a predetermined length supplied from the wire supplying portion, and bending by the bending portion And a coil assembly device for assembling the processed coil segments in correspondence with the slots of the rotary electric machine,
The said wire supply part is characterized by having a film peeling apparatus of the wire of any one of Claim 5 to 9 as a film peeling apparatus of the wire which peels the film in the both ends of the wire of said predetermined length. Manufacturing equipment for rotating electrical machines.