JP5036458B2 - Winding end clamping device - Google Patents

Description

  The present invention provides a winding for winding a conductive wire around a pole portion extending radially inward from an arc-shaped yoke portion constituting a core, and then sandwiching a winding end end portion of the winding. The present invention relates to a wire end clamping apparatus.

  Generally, a stator core of a rotating electrical machine includes a core having an arc-shaped yoke portion and a pole portion extending radially inward from the yoke portion, and a conductor (coil) is wound around the pole portion. Winding is applied.

  This type of stator core needs to be manufactured quickly and efficiently. For this reason, for example, it is desired to divide the winding process of winding a conducting wire around the pole portion into various end processing processes for processing the end of the wound conducting wire, and to process each process in parallel. ing.

  As an apparatus for performing this type of processing, for example, a terminal processing apparatus for coil winding disclosed in Patent Document 1 is known. In Patent Document 1, as shown in FIG. 18, a flyer 1 a is provided, and the flyer 1 a is provided with a nozzle 3 a for sequentially feeding the wire 2 a at the tip of the long arm. The core 4a is held by a collet chuck (not shown), and the wire 2a starts to be wound around the core 4a from the flange portion 5a side through the flyer 1a.

  The flyer 1a winds the wire 2a around the core 4a by performing the rotating operation and the retreating operation, and the rotation and the retreating movement are stopped when the predetermined number of turns is reached. Next, the wire 2a is guided to one electrode 7a in the flange portion 6a and is bent to the electrode 7a side.

  Moreover, in the automatic manufacturing apparatus of the multipolar flat type coil currently disclosed by patent document 2, the terminal holding tool is provided in the winding-type holder holding a some winding form. In the winding mold holder, after winding the winding mold with a flyer, the wire rod at the end of the winding is pulled out and held by a terminal holding tool provided at a position one step lower than the position of the winding mold. ing.

JP 2001-230144 A JP 58-186355 A

  In Patent Document 1, after winding the core 4a with the wire 2a, the terminal wire of the wire 2a is bent toward the electrode 7a. However, the winding process of the wire 2a by the flyer 1a is the process that takes the most work time as compared with other end processing processes and the like. Therefore, in the winding process, since the work of forming the terminal wire of the wire 2a after winding is performed, there is a problem that the working time becomes considerably long.

  Moreover, in said patent document 2, after winding a winding form with a flyer, the bending (molding) process for moving the wire of the terminal part of this winding to a terminal holding fixture is required. For this reason, similarly to the above-mentioned Patent Document 1, since the terminal wire is formed in the winding process, there is a problem that the working time of the entire winding process becomes long.

  The present invention solves this type of problem, and immediately after forming a winding by winding a conducting wire around the pole portion of the core, the end of the winding is quickly and reliably gripped. An object of the present invention is to provide a winding end clamping device capable of efficiently performing the entire process.

  The present invention provides a winding for winding a conductive wire around a pole portion extending radially inward from an arc-shaped yoke portion constituting a core, and then sandwiching a winding end end portion of the winding. The present invention relates to a wire end clamping apparatus.

  The winding end clamping device includes a clamp mechanism that clamps a winding end end that extends linearly in a winding posture with a pair of swinging claw members that are adjacent from both sides, and the pair of swinging claw members. And an opening / closing mechanism for positioning and holding at a holding position for holding the winding end end and an open position spaced apart from the winding end end and retracted to the outside of the winding work area.

  The clamp mechanism is provided with a base plate and a first clamping portion for clamping the winding end portion at one end portion, and a guide inserted into a guide groove portion formed in the base plate at the other end portion. A first swinging claw member provided with a pin is connected to a substantially central portion of the first swinging claw member via a first support shaft, and the winding end portion is sandwiched between one end portions. It is preferable that a second sandwiching portion is provided, and a second swinging claw member that is swingably supported by the base plate via a second support shaft is provided at the other end.

  Furthermore, the opening / closing mechanism is provided on a swing member whose one end is swingable to the base plate via the third support shaft, a lever provided on the other end of the swing member, and a second swing claw member. A first stopper member that holds the first swinging claw member and the second swinging claw member at the clamping position when the lever is engaged, and the second swinging claw member. It is preferable that the first rocking claw member and the second rocking claw member be held in an open position when the lever is engaged.

  Furthermore, it is preferable that the guide groove portion into which the guide pin is inserted is set to have a shape that restricts the first swinging claw member so as to be movable from the clamping position to the opening position.

  The winding end clamping device includes a first regulating member that regulates the second swinging claw member to the clamping position and a second regulating member that regulates the second swinging claw member to the open position. It is preferable.

  According to the present invention, the winding end portion extending linearly in the winding posture is sandwiched between the pair of swinging claw members. Therefore, immediately after the winding is applied to the pole portion constituting the core, the winding end end portion of the winding can be quickly and reliably gripped via the clamping mechanism, and the entire winding process is efficiently performed. It becomes possible to do.

  Further, the opening / closing mechanism can position and hold the pair of swinging claw members at an open position where the pair of swinging claw members are separated from the winding end end and retracted to the outside of the winding work area. Therefore, it is possible to prevent the clamp mechanism from interfering with the winding operation, and to perform the entire winding process efficiently and smoothly with a simple configuration.

  FIG. 1 is a schematic explanatory view of a stator core manufacturing apparatus 10 incorporating a winding end clamping apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic plan explanatory view of the stator core manufacturing apparatus 10.

  A plurality of stator cores 12 manufactured by the stator core manufacturing apparatus 10 are arranged in an annular shape to constitute a stator. As shown in FIGS. 3 and 4, the stator core 12 includes a laminated steel plate (core) 14 obtained by caulking and integrating a plurality of substantially T-shaped steel plates punched by a press, and an insulator 16 that insulates the laminated steel plate 14. 18, a conductive wire (coil) 20 wound around the laminated steel plate 14 via the insulators 16, 18, and metal terminals (electrodes) 22, 24.

  The laminated steel sheet 14 includes an arc-shaped yoke portion 26 and a pole portion 28 that extends radially inward from the yoke portion 26. The yoke portion 26 includes an arc-shaped outer wall surface 26a radially outward, and a groove portion 30 is formed on the outer wall surface 26a so as to extend in the stacking direction. A substantially semicircular convex portion 32 is formed at one circumferential end of the yoke portion 26, and the convex portion 32 of the adjacent yoke portion 26 is fitted to the other circumferential end of the yoke portion 26. A concavity 34 is formed.

  The insulators 16 and 18 are made of, for example, PPS (polyphenylene sulfide), and have coil winding portions 36 and 38 around which the conductive wire 20 is wound. The insulators 16 and 18 are partially overlapped and joined, and the laminated steel plate 14 and the conductive wire 20 are electrically insulated.

  As shown in FIG. 4, the winding start end portion 20 a of the conducting wire 20 is crimped and cut to the terminal 22 and fixed to the terminal 22, and the winding end end portion 20 b of the conducting wire 20 is crimped to the terminal 24. It is cut and fixed to this terminal 24.

  As shown in FIGS. 1 and 2, the stator core manufacturing apparatus 10 causes an assembly part (hereinafter also simply referred to as a laminated steel plate 14) of a laminated steel plate 14 and insulators 16 and 18 to be gripped by a core gripping jig 44 described later. An attachment / detachment station ST1 for removing the wound stator core 12 from the core holding jig 44, a winding station ST2 for forming a winding by winding a conductive wire 20 around the pole portion 28 of the laminated steel sheet 14, and the laminated steel sheet 14, an end forming station ST3 for moving the winding start end 20a and the winding end 20b of the conducting wire 20 corresponding to the terminals 22, 24, the winding start end 20a and the winding An end connection station for connecting the end end 20b to the terminals 22 and 24 by caulking and heating and cutting. And a T4.

  In the stator core manufacturing apparatus 10, the attaching / detaching station ST1, the winding station ST2, the end forming station ST3, and the end connecting station ST4 are concentrically spaced apart by a predetermined angular interval, for example, by equiangular intervals (90 ° intervals). Provided.

  As shown in FIG. 5, the stator core manufacturing apparatus 10 includes a core placement section 40 that places the laminated steel plates 14 corresponding to the attachment / detachment station ST1, the winding station ST2, the end forming station ST3, and the end connection station ST4. A table 42 is provided.

  The core placement portions 40 are provided at intervals of 90 °, and each core placement portion 40 is provided with a core gripping jig 44 on which the laminated steel plate 14 can be freely attached and detached. On the table 42, index means 46 for sequentially disposing each core gripping jig 44 corresponding to the attaching / detaching station ST1, the winding station ST2, the end forming station ST3 and the end connecting station ST4, and the table 42 are moved up and down. A table elevating means 48 is provided. The index means 46 includes a motor that rotates the table 42 by 90 ° in the direction of arrow A, while the table elevating means 48 includes a cylinder that moves the table 42 back and forth (up and down) in the direction of arrow B.

  As shown in FIGS. 6 to 9, the core gripping jig 44 includes a jig main body 50, and on one end (upper end) side of the jig main body 50, the yoke portion 26 constituting the laminated steel plate 14 is provided. A core receiving portion 52 that receives the outer wall surface 26a is formed. A seating surface 52 a having the same arc shape as the outer wall surface 26 a is formed on the end surface of the core receiving portion 52.

  In the core receiving portion 52, a groove portion 54 is formed corresponding to the center position of the seating surface 52a, that is, corresponding to the groove portion 30 of the yoke portion 26. As for the regulation wall 56 provided in this groove part 54, the center shaft 58 is arrange | positioned via a pair of rod-shaped elastic member 60 (refer FIG. 7).

  The jig body 50 is provided with a flange 62 protruding outward, and a locking pin 66 constituting the positioning means 64 is fixed in the vicinity of the flange 62. A spindle shaft 68 is provided at the other end (lower end) of the jig body 50.

  Near the lower part of the core receiving part 52, the joint plate 70 is disposed in a free state with respect to the jig body 50. The joint plate 70 has a substantially U shape with a part cut away, and a chuck 72 is provided on the joint plate 70. The chuck 72 includes a first claw portion 74 and a second claw portion 76 that are disposed diagonally to each other, and a third claw portion 78 that is disposed in a direction orthogonal to the first and second claw portions 74 and 76. And a fixing member 80 fixed to the jig main body 50 so as to face the third claw portion 78.

  The first claw portion 74, the second claw portion 76, and the third claw portion 78 are swingably attached to the joint plate 70 via a support shaft 82, and a cam roller 84 is provided at each lower end portion. A concave portion 86 corresponding to the convex portion 32 of the yoke portion 26 is formed at the upper end edge portion of the first claw portion 74, and a concave portion of the yoke portion 26 is formed at the upper end edge portion of the second claw portion 76. 34 is formed.

  Four holes 89 are formed in the jig body 50 at positions separated from the center by a predetermined distance. A guide bar 90 is inserted into each hole 89, and each guide bar 90 is inserted into a cam 92 having a tapered surface 92 a on the outer periphery and extends to the vicinity of the core receiving portion 52. A spring 94 is provided between the cam 92 and the core receiving portion 52 so as to be externally inserted into the guide bar 90. A cam roller 84 provided on the first claw portion 74 to the third claw portion 78 is in sliding contact with the tapered surface 92 a of the cam 92. The cam 92 is urged downward through the elastic force of the spring 94, thereby swinging the upper end sides of the first claw portion 74 to the third claw portion 78 inward through the tapered surface 92a. .

  As shown in FIGS. 8 and 9, each core arrangement portion 40 is provided with a hole 96 corresponding to the core gripping jig 44, and the lower surface of the table 42 corresponds to the hole 96. The support plate 98 is fixed. The support plate 98 is provided with a recessed portion 100 in which a locking pin 66 provided on the jig body 50 is disposed to restrict the rotation of the jig body 50, and the locking pin 66 and the recessed portion 100 are formed. Thus, the positioning means 64 is configured.

  Each core placement portion 40 is provided with a core gripping jig holding means 102 for pressing and holding the core gripping jig 44 on the core placement portion 40 when the core gripping jig 44 is indexed. As shown in FIGS. 6, 8, and 9, the pressing unit 102 includes a pressing plate 104 that engages with the flange portion 62 of the jig main body 50. The pressing plate 104 is fixed to the guide bar 106, and the pressing plate 108 is connected to the lower end of the guide bar 106. The pressing plate 108 is biased downward via a spring 109, and the pressing plate 104 presses and holds the flange portion 62 downward, so that the locking pin 66 of the jig main body 50 is attached to the support plate 98. It is inserted into the recess 100.

  As shown in FIGS. 7 and 10, each core gripping jig 44 grips the winding end 20b of the conductor 20, and guides the winding end 20b to the end forming station ST3. Such a winding end clamping apparatus 110 is provided.

  The winding end clamping apparatus 110 includes a base plate 118 that is fixed to the fixing member 80 via the attachment plate 116 and is disposed on the second claw portion 76 side. As shown in FIGS. 7 and 10 to 12, the base plate 118 includes a first swinging claw member 120 and a second swinging claw member 122, and the first swinging claw member 120 and the second swinging claw member 120. The swinging claw member 122 clamps the winding end end portion 20b extending linearly in the winding posture from both sides, the first swinging claw member 120, and the second swinging claw member 122. An opening / closing mechanism 126 is provided that positions and holds the winding end position at a position where the winding end end portion 20b is clamped and an open position where the winding end position is separated from the winding end end portion 20b and retracts outward from the winding work area. The winding work area is shown schematically in FIGS.

  One end portion of the first swinging claw member 120 is provided with a holding portion 127 for holding the winding end portion 20b, and a guide pin 128 is provided at the other end portion of the first swinging claw member 120. Provided. The guide pins 128 are inserted into guide groove portions 130 formed in the base plate 118. The guide groove 130 is set to a shape that restricts the first swinging claw member 120 so as to be movable in a range from the clamping position to the opening position.

  The substantially central portion of the first swing claw member 120 is connected to the second swing claw member 122 via the first support shaft 132. At one end portion of the second swinging claw member 122, a holding portion 134 for holding the winding end portion 20b together with the holding portion 127 of the first swinging claw member 120 is provided. The other end edge portion of the second swing claw member 122 is swingably supported by the base plate 118 via the second support shaft 136. The other end edge of the second swinging claw member 122 is provided with a locking end 138 that is bent by approximately 90 ° from the second support shaft 136 side.

  In the base plate 118, when the second swinging claw member 122 is disposed at the clamping position of the winding end portion 20b, the second swinging claw is provided such that a predetermined gap is provided between the clamping portions 127 and 134. When the second rocking claw member 122 is opened, the locking portion 138 comes into contact with the second rocking claw member 122 when the regulating part (first regulating member) 140 that regulates the position of the member 122 and the second rocking claw member 122 are opened. And a regulating pin (second regulating member) 142 that regulates the opening position of the.

  A first stopper member 144 that constitutes an opening / closing mechanism 126 and holds the clamp mechanism 124 in the clamping position, and a second stopper member 146 that holds the clamp mechanism 124 in the open position are fixed to the second swinging claw member 122. Is done. The first stopper member 144 and the second stopper member 146 have an L shape, and have L-shaped locking surfaces 144a and 146a, respectively. The opening / closing mechanism 126 includes a swing member 150 that can swing on the base plate 118 via a third support shaft 148. The swing member 150 is formed of a long square member. The third support shaft 148 is engaged at one end, and a lever 152 is provided at the other end via a bearing 154.

  The bearing 154 is fixed to a corner portion of the locking surface 144a of the first stopper member 144, thereby holding the winding end portion 20b between the holding portions 127 and 134, while the locking surface of the second stopper member 146 is held. The clamp mechanism 124 is held in the open position by being fixed to the corner portion of 146a. The base plate 118 is provided with a regulation pin 156 that regulates further movement of the rocking member 150 from the clamping position of the clamp mechanism 124 when the rocking member 150 comes into contact therewith.

  As shown in FIG. 13, the core holding jig 44 is fixed to the attachment / detachment station ST1 at the lowered position of the table 42, while the core holding jig 44 is released from being fixed at the raised position of the table 42. And a chuck opening / closing means 162 for releasing the gripping of the stator core 12 by the chuck 72 and holding the new laminated steel sheet 14 by the chuck 72.

  As shown in FIGS. 13 and 14, the fixing means 160 includes a cam member 166 that rotates through a cylinder 164 within a predetermined angle range. The cam member 166 has a function of fixing the spindle shaft 68 constituting the core gripping jig 44 at one stop position so that the spindle shaft 68 cannot rotate, and releasing the holding action of the spindle shaft 68 at the other stop position. The fixing means 160 is also provided at least in the winding station ST2, the end forming station ST3, and the end connecting station ST4 (see FIG. 5).

  As shown in FIG. 13, the chuck opening / closing means 162 includes a cylinder 168, and a mounting plate 170 is fixed to a rod 168 a extending upward from the cylinder 168. The mounting plate 170 is held at one end of, for example, three push-up pins 172. The push-up pin 172 penetrates the fixing means 160 and penetrates the hole 95 of the jig body 50 constituting the core gripping jig 44, and can press the cam 92 upward (see FIG. 7).

  The push-up pin 172 is positioned in the fixing means 160 when the rod 168a is disposed in the cylinder 168, while the push-up pin 172 is positioned in the hole of the jig body 50 when the rod 168a protrudes upward from the cylinder 168. The cam 92 is pushed upward through the portion 95, and the tapered surface 92 a is separated from the cam roller 84.

  As shown in FIG. 14, the winding station ST <b> 2 contacts the pressing plate 108 constituting the pressing unit 102 when the fixing unit 160 and the table 42 are lowered, and the pressing plate 104 is integrated with the pressing plate 108. Is lifted relative to the table 42, and the press release means 174 for releasing the pressing and holding action of the core holding jig 44 by the holding means 102 and the spindle shaft 68 of the core holding jig 44 are connected to the core. A rotating means 176 for rotating the gripping jig 44 is provided. The rotating means 176 includes a motor 178, and a rotating shaft 178 a of the motor 178 is connected to a shaft body 180 constituting the fixing means 160.

  As shown in FIG. 1, a nozzle device 190 that winds the conducting wire 20 around the laminated steel sheet 14 is disposed at the winding station ST <b> 2, and the conducting wire 20 is fed from the tension device 192 to the nozzle device 190. The nozzle device 190 includes a nozzle 194 configured to be movable (movable up and down) along the axis of the spindle shaft 68.

  A terminal molding device 196 is disposed at the end molding station ST3. The terminal forming device 196 has a function of moving (forming) the winding start end portion 20a and the winding end end portion 20b of the conducting wire 20 wound around the laminated steel sheet 14 in correspondence with the terminals 22 and 24, respectively.

  A caulking / cutting device 198 is disposed at the end connection station ST4. The caulking / cutting device 198 includes first caulking means 200a that performs automatic caulking processing (caulking and heating) on the winding start end portion 20a of the conducting wire 20, and a first cutter 202a that automatically cuts the winding start end portion 20a that has been caulked. And a second caulking means 200b for performing an automatic caulking process on the winding end portion 20a of the conducting wire 20, and a second cutter 202b for automatically cutting the caulking processed end end portion 20b.

  The first caulking means 200a, the first cutter 202a, the second caulking means 200b, and the second cutter 202b are arranged vertically and can be advanced and retracted individually in the front-rear direction and the left-right direction, respectively.

  The operation of the stator core manufacturing apparatus 10 configured as described above will be described below.

  First, as shown in FIG. 2, the laminated steel sheet 14 is gripped by the core gripping jig 44 integrally with the insulators 16, 18 in the core placement portion 40 of the table 42 placed corresponding to the attachment / detachment station ST <b> 1. Specifically, as shown in FIG. 13, a fixing means 160 and a chuck opening / closing means 162 are arranged at the attachment / detachment station ST1, and the spindle shaft 68 of the core gripping jig 44 is positioned via the fixing means 160. Is retained.

  Then, the cylinder 168 constituting the chuck opening / closing means 162 is driven and the rod 168a protrudes upward, so that the three push-up pins 172 are raised via the mounting plate 170. The push-up pin 172 passes through the fixing means 160 and is inserted into the hole 95 of the jig main body 50 constituting the core gripping jig 44, and presses the cam 92 upward through the hole 95.

  Therefore, as shown in FIG. 15, the cam 92 rises against the elastic force of the spring 94 mounted on the guide bar 90, and the cam roller 84 is detached from the tapered surface 92 a of the cam 92. Accordingly, the first claw portion 74, the second claw portion 76, and the third claw portion 78 constituting the chuck 72 are opened. In this state, the laminated steel plate 14 is disposed on the core receiving portion 52 of the jig body 50.

  Next, when the rod 168a moves downward through the cylinder 168 constituting the chuck opening / closing means 162, the push-up pin 172 is lowered. The cam 92 moves downward via the elastic force of the spring 94, and the tapered surface 92a of the cam 92 slides against each cam roller 84 and presses the cam roller 84 outward. For this reason, the upper end side of each of the first claw portion 74, the second claw portion 76, and the third claw portion 78 is pivotally displaced inward with the support shaft 82 as a fulcrum. At that time, the convex portion 32 formed in the yoke portion 26 of the laminated steel sheet 14 is engaged with the concave portion 86 provided in the first claw portion 74, and the convex portion 88 provided in the second claw portion 76 The yoke portion 26 is engaged with the concave portion 34.

  Further, the center shaft 58 is engaged with the groove portion 30 formed in the outer wall surface 26 a of the yoke portion 26, and the elastic member 60 is deformed under the tightening action by the chuck 72, so that the arc-shaped outer wall surface of the yoke portion 26 is deformed. 26 a is in sliding contact with the arc-shaped seating surface 52 a of the core receiving portion 52. Thereby, the laminated steel sheet 14 is positioned and held in a state where it is accurately centered with respect to the core receiving portion 52.

  The third claw portion 78 presses one end side of the laminated steel plate 14, and the fixing member 80 supports the insulators 16 and 18.

  As described above, after the laminated steel sheet 14 is gripped by the core gripping jig 44 disposed in the detaching station ST1, the table 42 is moved at a predetermined angle, for example, under the action of the motor constituting the index means 46. It is rotated in the direction of arrow A by 90 °. For this reason, the core gripping jig 44 that grips the laminated steel sheet 14 is disposed corresponding to the winding station ST2. The table 42 is lowered to a predetermined height position under the action of a cylinder constituting the table elevating means 48.

  The winding station ST2 is provided with a fixing means 160 and a press release means 174 (see FIG. 14). Therefore, when the table 42 is lowered, the spindle shaft 68 constituting the core gripping jig 44 is inserted into the fixing means 160, and the cam member 166 is rotated by driving the cylinder 164 constituting the fixing means 160. Then, the spindle shaft 68 is connected to the shaft body 180.

  On the other hand, when the table 42 is lowered, the pressing plate 108 constituting the pressing unit 102 comes into contact with the pressing release unit 174, and the pressing plate 108 is prevented from descending. Therefore, as shown in FIG. 9, the table 42 is lowered while the pressing plate 108 is held at a predetermined height position, so that the pressing plate 104 connected to the pressing plate 108 via the guide bar 106. Is detached from the flange portion 62 of the jig main body 50 constituting the core holding jig 44, and the pressing and holding of the core holding jig 44 is released.

  Further, when the table 42 is lowered, the locking pin 66 of the core holding jig 44 is detached from the concave portion 100 of the support plate 98 fixed to the table 42. As a result, the core holding jig 44 is rotatable with respect to the core placement portion 40.

  Then, the conductive wire 20 is fed out from the nozzle 194 constituting the nozzle device 190, and the laminated steel sheet 14 rotates integrally with the core gripping jig 44 under the rotating action of the motor 178 constituting the rotating means 176. For this reason, the conducting wire 20 is wound around the laminated steel sheet 14 via the coil winding portions 36 and 38 of the insulators 16 and 18 to perform winding.

  As shown in FIG. 2, the winding end 20b of the conducting wire 20 extends linearly in a winding posture, and the winding end 20b is a winding end clamping device 110 according to this embodiment. Is gripped through.

  As shown in FIG. 16, in the winding end clamping device 110, the swinging member 150 constituting the opening / closing mechanism 126 is disposed on the second stopper member 146 side, and the bearing 154 is connected to the second stopper member 146. It is held at the corner of the locking surface 146a. Therefore, the clamp mechanism 124 is fixed at an open position where the first swinging claw member 120 and the second swinging claw member 122 are spaced apart from each other and retract outward from the winding work area.

  Therefore, immediately after the winding process of the conducting wire 20 is completed, the operation rod 155 moves in the direction of arrow C in FIG. The operation rod 155 abuts on a lever 152 provided on the swing member 150 and swings the lever 152 in the direction of arrow D with the third support shaft 148 as a fulcrum.

  The bearing 154 provided on the swinging tip side of the swinging member 150 is detached from the locking surface 146a of the second stopper member 146 and then comes into contact with the locking surface 144a of the first stopper member 144. Therefore, the second swinging claw member 122 swings vertically upward (in the arrow direction) with the second support shaft 136 as a fulcrum, and the first swinging claw member 120 has the first support shaft 132 upward. When the guide pin 128 and the guide groove 130 are guided, the guide member 128 swings and is displaced in the direction of the arrow.

  As a result, the pinching portion 127 of the first swinging claw member 120 and the pinching portion 134 of the second swinging claw member 122 swing upward in a direction close to each other, and the lead wire 20 of the conductor 20 is within the winding work area. The winding end 20b is clamped (see FIG. 17). In this state, the winding end portion 20b is cut.

  At this time, as shown in FIG. 17, the bearing 154 provided on the swing member 150 swings in the direction of arrow D with the third support shaft 148 as a fulcrum, while the locking surface 144a with which the bearing 154 is slidably contacted. Is configured in a straight line. Therefore, when the swing member 150 swings in the direction of arrow D, the maximum resistance force is generated when the bearing 154 is brought into sliding contact with the linear portion of the locking surface 144a. At the corners, that is, in contact with two orthogonal surfaces.

  As described above, a retaining function is generated between the bearing 154 and the straight portion of the locking surface 144a, and the bearing 154 disposed at the corner of the locking surface 144a is unnecessarily disposed in the direction of the arrow E. It is possible to prevent the swinging and detachment from the first stopper member 144.

  Next, in the winding station ST <b> 2, the cylinder 164 constituting the fixing unit 160 is driven to release the connection between the spindle shaft 68 and the shaft body 180 of the core holding jig 44, and then the table is moved via the table lifting / lowering unit 48. 42 rises. The table 42 is provided with pressing means 102 corresponding to the core arrangement portion 40, and the pressing plate 108 is supported by the pressing release means 174 when the table 42 is raised.

  For this reason, the pressing plate 104 is lowered relative to the table 42 by the elastic force of the spring 109, abuts against the flange 62 of the core gripping jig 44, and presses the flange 62 toward the support plate 98. . Therefore, when the pressing plate 108 is detached from the press release means 174, the core holding jig 44 is pressed toward the support plate 98 by the press plate 104 while the locking pin 66 is fitted in the recess 100. That is, the core gripping jig 44 is pressed and held on the core placement portion 40 by the pressing means 102.

  After reaching the raised position, the table 42 is rotated by a predetermined angle, for example, 90 ° via the index means 46. The core gripping jig 44 that has been subjected to the winding process is disposed corresponding to the end molding station ST3. In this state, since the table 42 is lowered via the table elevating means 48, the spindle grip 68 is fixed to the fixing means 160 in the core gripping jig 44 arranged corresponding to the end molding station ST3. .

  Then, under the action of the terminal forming device 196, the winding start end 20a of the conducting wire 20 is moved to the terminal 22 side, and the winding end end 20b of the conducting wire 20 is moved to the terminal 24 side. At that time, at the winding end portion 20b, the gripping action by the winding end clamping device 110 is released, and it is delivered to the terminal molding device 196.

  Specifically, as shown in FIG. 17, the swing member 150 is held by the first stopper member 144, and the operation rod 155 moves in the direction of arrow F to press the lever 152 of the swing member 150. To do. For this reason, the bearing 154 slides on the straight portion from the corner of the locking surface 144a of the first stopper member 144, that is, the lock portion, and is detached from the first stopper member 144, and then the second stopper member 146 Engages with the locking surface 146a.

  Accordingly, the second swinging claw member 122 swings the holding portion 134 side downward with the second support shaft 136 as a fulcrum. At that time, the first support shaft 132 swings downward integrally with the second swinging claw member 122, and the first swinging claw member 120 connected to the first support shaft 132 is connected to the holding portion 127 side. Is swung in a direction away from the holding part 134.

  As a result, the clamping portions 127 and 134 swing (release) in directions away from the winding end portion 20b, respectively, and the clamping action of the winding end portion 20b is released. When the swinging member 150 swings in the direction of arrow E, the bearing 154 slides on the straight portion of the locking surface 146a of the second stopper member 146 and receives the maximum resistance, and then the locking member 150 It is accommodated in a corner of the surface 146a (see FIG. 16). Therefore, the bearing 154 does not unnecessarily leave the second stopper member 146, and the clamp mechanism 124 can be reliably and firmly held in the open posture.

  As described above, after the winding start end portion 20a and the winding end end portion 20b of the conducting wire 20 are formed at the end forming station ST3, the fixing of the spindle shaft 68 by the fixing means 160 is released, and the table 42 rises and the spindle shaft 68 is detached from the fixing means 160.

  Next, the table 42 is rotated by a predetermined angle, for example, 90 °, through the index means 46, so that the stator core 12 subjected to the end molding process is disposed corresponding to the end connection station ST4. Is done. At the end connection station ST4, the table 42 is lowered to drive the caulking / cutting device 198 while the spindle shaft 68 of the core gripping jig 44 is fixed to the fixing means 160.

  In the caulking / cutting device 198, first, the first caulking means 200a and the second caulking means 200b are driven simultaneously (or separately), and the winding start end portion 20a and the winding end end portion 20b are connected to the terminals 22, 24, respectively. It is caulked. Further, the first cutter 202a and the second cutter 202b are driven to cut the winding start end 20a and the winding end 20b.

  After the above operation is completed, the fixing of the spindle shaft 68 by the fixing means 160 is released, the table 42 is raised, and the table 42 is rotated by a predetermined angle, for example, 90 ° via the index means 46. The stator core 12 is disposed corresponding to the attachment / detachment station ST1. At the attachment / detachment station ST1, when the table 42 is lowered, the pressing and holding of the core gripping jig 44 by the pressing means 102 is released, and the chuck opening / closing means 162 is driven. For this reason, the cam 92 rises under the pressing action of the push-up pin 172 to release the holding action of the stator core 12 by the chuck 72, and the stator core 12 is taken out from the core gripping jig 44.

  In this case, in this embodiment, after the conducting wire 20 is wound around the laminated steel sheet 14 and the winding is performed at the winding station ST2, the winding end end of the conducting wire 20 that extends linearly in a winding posture. The portion 20 b is sandwiched between the first swinging claw member 120 and the second swinging claw member 122 that constitute the clamp mechanism 124. For this reason, immediately after the winding by the conducting wire 20 is performed on the laminated steel plate 14, the winding end portion 20b of the conducting wire 20 can be quickly and reliably gripped.

  As a result, for example, there is no need to temporarily form the winding end 20b at the winding station ST2, and the entire winding process can be efficiently performed.

  In particular, the winding work for winding the conductive wire 20 around the laminated steel sheet 14 is a time-consuming work compared to other processes. Therefore, immediately after the end of the winding work, the winding end end portion 20b is gripped by the clamp mechanism 124, so that the processing time in the winding station ST2 can be shortened, and the manufacturing time of the stator core 12 is effectively increased. There is an advantage that it can be shortened.

  Further, the opening / closing mechanism 126 can position and hold the first swinging claw member 120 and the second swinging claw member 122 at an open position where they are retracted to the outside of the winding work area (see FIG. 16). Therefore, it is possible to prevent the clamp mechanism 124 from interfering with the winding work by the nozzle device 190, and to perform the entire winding process efficiently and smoothly with a simple configuration.

It is a schematic explanatory drawing of the stator core manufacturing apparatus incorporating the winding edge part clamping device which concerns on embodiment of this invention. It is a schematic plan view of the stator core manufacturing apparatus. It is a disassembled perspective explanatory drawing of a stator core. It is a perspective explanatory view of the stator core. It is explanatory drawing of the table which comprises the said stator core manufacturing apparatus. It is a perspective view of the core holding jig which comprises the said stator core manufacturing apparatus. It is a disassembled perspective explanatory drawing of the said core holding jig. It is a partial cross section explanatory view of the core grasping jig. It is other partial cross-section explanatory drawing of the said core holding jig. It is a perspective view of the state where the above-mentioned coil end clamping device was attached to the above-mentioned core grasping jig. It is a disassembled perspective explanatory drawing of the said winding edge part clamping device. It is a perspective view of the said winding edge part clamping device. It is explanatory drawing of an attachment / detachment station. It is explanatory drawing of a winding station. It is operation | movement explanatory drawing of the said core holding jig. It is operation | movement explanatory drawing of the said coil | winding edge part clamping apparatus. It is operation | movement explanatory drawing of the said coil | winding edge part clamping apparatus. It is explanatory drawing of the terminal processing apparatus currently disclosed by patent document 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Stator core manufacturing apparatus 12 ... Stator core 14 ... Laminated steel plate 20 ... Conductor 20a ... Winding end part 20b ... Winding end part 22, 24 ... Terminal 26 ... York part 26a ... Outer wall surface 28 ... Pole part 30, 54 ... Groove part 32 ... convex part 34 ... concave part 40 ... core arrangement part 42 ... table 44 ... core gripping jig 46 ... index means 48 ... table lifting means 50 ... jig body 52 ... core receiving part 52a ... seating surface 58 ... center shaft 60 ... elastic member 62 ... collar 64 ... positioning means 66 ... locking pin 68 ... spindle shaft 70 ... joint plate 72 ... chuck 74, 76, 78 ... claw part 80 ... fixing member 84 ... cam rollers 86, 100 ... concave part 88 ... convex Portion 92 ... Cam 92a ... Tapered surface 94 ... Spring 102 ... Pressing means 104 ... Pressing plate 108 ... Pressing plate 1 DESCRIPTION OF SYMBOLS 0 ... Winding edge part clamping device 112 ... End part latching member 118 ... Base board 120, 122 ... Swing claw member 124 ... Clamp mechanism 126 ... Opening / closing mechanism 128 ... Guide pin 130 ... Guide groove part 132, 136, 148 ... Support Shaft 140 ... Regulator 142 ... Regulator pin 144, 146 ... Stopper member 144a, 146a ... Locking surface 150 ... Oscillating member 152 ... Lever 154 ... Bearing 160 ... Fixing means 162 ... Chuck opening / closing means 168 ... Cylinder 172 ... Push-up pin 174 ... Presser release means 176 ... Rotating means 190 ... Nozzle device 196 ... Terminal molding device 198 ... Caulking / cutting device

Claims (4)

Winding end pinching for pinching the winding end end of the winding after winding a conducting wire on a pole portion extending radially inward from the arcuate yoke portion constituting the core A device,
A clamping mechanism for clamping the winding end portion extending linearly in a winding posture with a pair of swinging claw members adjacent from both sides;
An opening / closing mechanism for positioning and holding the pair of swinging claw members at a clamping position for clamping the winding end end and an open position spaced apart from the winding end end and retracting outward from the winding work area; ,
Equipped with a,
The clamp mechanism includes a base plate,
A first pinching portion is provided at one end portion for pinching the winding end portion, and a guide pin inserted into a guide groove portion formed on the base plate is provided at the other end portion. A moving claw member;
The first swinging claw member is connected to a substantially central portion via a first support shaft, and a second clamping portion is provided at one end portion for clamping the winding end portion. A second rocking claw member that is pivotably supported by the base plate via a second support shaft at a portion;
Winding end clamping device, characterized in Rukoto equipped with. The winding end clamping apparatus according to claim 1 , wherein the opening / closing mechanism includes a swinging member whose one end is swingable to the base plate via a third support shaft;
A lever provided at the other end of the swing member;
A first stopper member provided on the second swinging claw member and holding the first swinging claw member and the second swinging claw member at the clamping position when the lever is engaged; ,
A second stopper member provided on the second swinging claw member and holding the first swinging claw member and the second swinging claw member in the open position when the lever is engaged; ,
A winding end clamping apparatus comprising: The winding end clamping apparatus according to claim 1 or 2, wherein the guide groove into which the guide pin is inserted is capable of moving the first swinging claw member from the clamping position to the open position. A winding end clamping apparatus, wherein the winding end clamping apparatus is set in a shape to be regulated. The winding end clamping apparatus according to claim 1 or 2 , wherein the first regulating member that regulates the second swing claw member to the clamping position;
A second restricting member for restricting the second swinging claw member to the open position;
A winding end clamping apparatus characterized by comprising:

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