JP2017011893A - Tension imparting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small, lightweight and wiring-free tension imparting device.SOLUTION: A tension imparting device 86 imparts tension to a part, between a work and a pulley 46, of a wire 28 having a part connected with the work (insulator) and other part wound around the pulley 46. The tension imparting device 86 includes a transmission mechanism 114 operating in synchronism with rotation of the pulley 46, and an elastic member 116 for energizing the transmission mechanism 114 elastically. A tension is imparted to the wire 28 by acting a force to the pulley 46 in the rotational direction, based on the elastic energizing force of the elastic member 116.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a tension applying device that applies tension to a wire between a workpiece and a pulley.

  2. Description of the Related Art Conventionally, a wire insertion device for inserting a wire (conductive wire) having a rectangular cross section for forming a stator coil for a rotating electrical machine into a groove portion of an insulator is known (see, for example, Patent Document 1 below). In a conventional wire insertion apparatus, a pulley around which a wire is wound inserts a wire into a groove portion after twisting the wire while winding and unwinding the wire at a high speed. At this time, if the wire is loosened, the wire interferes with the insulator or an appropriate twist is not applied, so that the wire cannot be inserted into the groove. For this reason, it is necessary to always apply tension to the wire so that no slack occurs. In the conventional wire insertion apparatus, the tension is applied to the wire by controlling the winding and feeding of the wire by driving the pulley by a motor.

JP2013-172581A

  However, in the conventional wire insertion device, since the motor for applying tension is heavy, it is difficult to move the pulley at high speed. Further, if the rigidity of other parts is increased in order to move the pulley at high speed, the equipment becomes large and the pulleys cannot be brought close to each other. Furthermore, the motor wiring may interfere with the equipment, and the wiring has limited the range of pulley movement.

  The present invention has been made in consideration of such problems, and provides a tension applying device capable of reducing the weight of the device, reducing the size of the equipment, and eliminating the motor wiring. With the goal.

  In order to achieve the above-described object, the present invention provides a tension application that applies tension to a portion between the workpiece and the pulley of a wire partly connected to the workpiece and the other part wound around a pulley. An apparatus, comprising: a transmission mechanism that operates in synchronization with rotation of the pulley; and an elastic member that elastically biases the transmission mechanism, and rotates on the pulley based on an elastic biasing force of the elastic member A tension is applied to the wire by applying a directional force.

  According to the tension applying device configured as described above, the tension is applied to the wire using the elastic biasing force of the elastic member. Therefore, compared to the conventional device that applies the tension by driving the motor, Weight reduction is possible. For this reason, the pulley can be moved at high speed. Moreover, since the rigidity of the other part of the installation provided with the tension | tensile_strength imparting apparatus can be reduced with weight reduction, an installation can be reduced in size. Therefore, when the facility has a plurality of pulleys, the pulleys can be brought close to each other to save space. Further, since this tension applying device has no motor wiring, the degree of freedom of the pulley movement range is increased. In addition, in the conventional application of tension by driving a motor, it is necessary to always control the length of the wire. However, according to the tension applying device of the present invention, the wire is wound and delivered in the pulley. Appropriate tension can always be applied by the elastic member in response to the change in the length of the wire.

  In the above tension applying device, the transmission mechanism includes a gear member that can rotate in synchronization with the rotation of the pulley, and a rack portion that meshes with the gear member, and moves linearly with the rotation of the gear member. A movable member, and the elastic member may bias the movable member in a movable direction of the movable member.

  With this configuration, the rotational movement of the gear member is converted into the linear movement of the movable member, and the urging force of the elastic member is transmitted to the pulley via the movable member. Therefore, a mechanism that reliably and suitably applies tension to the wire can be constructed with a simple configuration.

In the above tension applying device, the movable member is formed in a hollow cylindrical shape,
The elastic member may be inserted into the movable member.

  With this configuration, the elastic member is inserted inside the movable member, so that the space can be effectively used and the length of the transmission mechanism can be shortened. Therefore, the size of the tension applying device can be further reduced.

  According to the tension applying device of the present invention, the weight of the device can be reduced, the equipment can be downsized, and the motor wiring can be eliminated.

It is a top view of the stator integrated in a rotary electric machine. It is a perspective view of a division | segmentation core part. It is a perspective view which shows the state by which the start end part and termination | terminus part of a wire were wound around the 1st pulley and the 2nd pulley, respectively. 1 is an overall schematic view of a wire insertion device including a tension applying device according to an embodiment of the present invention. It is sectional drawing of a pulley holding | maintenance part (state which the arm closed). It is sectional drawing of a pulley holding | maintenance part (state which the arm opened). FIG. 6 is a cross-sectional view taken along line VII-VII in FIG. 5 (cross-sectional view of a tension applying device in a pulley holding unit). FIG. 8A is an explanatory diagram of a first process performed by the wire insertion device, and FIG. 8B is an explanatory diagram of a second process performed by the wire insertion device. FIG. 9A is a first explanatory diagram of a fourth process performed by the wire insertion device, and FIG. 9B is a second explanatory diagram of a fourth process performed by the wire insertion device.

  Hereinafter, preferred embodiments of the tension applying device according to the present invention will be described with reference to the accompanying drawings.

  In FIG. 1, the stator 10 includes a plurality of divided core portions 12 arranged in the circumferential direction. In the manufacturing process of each divided core portion 12 of the stator 10 as described above, a wire insertion device 14 (see FIG. 4) is used. A tension applying device 86 (see FIGS. 5 to 7) according to the present embodiment is provided in the wire insertion device 14. In FIG. 1, a stator 10 is combined with a rotor (not shown) provided therein to constitute a rotating electric machine, and is used as, for example, an electric motor or a generator.

  The stator 10 is a so-called three-phase Y-connection salient pole wound stator, and forms a neutral point with a hollow holder 16 and three-phase input terminals U, V, and W, as shown in FIG. And a stator core 18 formed by annularly arranging a plurality (18 in FIG. 1) of divided core portions 12 along the inner peripheral surface of the holder 16.

  The stator core 18 shown in FIG. 1 includes 18 divided core portions 12 having coils 20. These coils 20 constitute a U phase (U1 phase to U6 phase), a V phase (V1 phase to V6 phase), and a W phase (W1 phase to W6 phase), respectively. , V1, W1, U2,..., U6, V6, W6 are arranged in this order.

  As shown in FIG. 2, the split core portion 12 electrically insulates the split iron core 24 from a plurality of substantially T-shaped metal plates (steel plates) 22 punched by pressing, and the split iron core 24. And a coil 20 composed of a wire 28 (coil wire) that is a conductive wire wound around the split iron core 24 via the insulator 26. The wire 28 is a rectangular wire having a rectangular cross section.

  The split iron core 24 has a yoke portion 24a extending along an arrow C direction (a circumferential direction of the stator core 18) on the arrow B1 direction (a direction toward the outside of the stator core 18) side, and an arrow B2 direction (the stator core 18) from the yoke portion 24a. And a magnetic pole part 24b extending toward the inner side.

  The insulator 26 is made of an electrically insulating material such as a flexible resin. The insulator 26 includes a hollow winding portion 30 around which an intermediate portion of the wire 28 (a portion constituting between the start end portion 28a and the end end portion 28b) is wound, and a routing that protrudes from the winding portion 30 in the arrow B1 direction. Part 32.

  The routing portion 32 is a portion for routing the end portion (start end portion 28a or termination end portion 28b) of the wire 28 to the locations of the input terminals U, V, W and the neutral terminal N along the circumferential direction of the stator core 18. . The lead-out portion 32 includes a lead wire storage portion 34 in which a plurality of lead wire holding grooves 34a to 34d are formed, and a terminal fixing portion formed behind the lead wire storage portion 34 (location on the arrow C1 direction side on the back in the arrow B2 direction). 36.

  The plurality of conductive wire holding grooves 34 a to 34 d are configured so that the start end portion 28 a or the end end portion 28 b of the wire 28 wound around the winding portion 30 can be stored in the arrow C direction. Each of the conductive wire holding grooves 34a to 34d has a width (length along the arrow A direction) and a depth (depth along the arrow B direction) that can accommodate the start end portion 28a or the end end portion 28b of the flat wire 28. , Extending along the direction of arrow C, and provided at predetermined intervals in the direction of arrow A. In the conducting wire storage portion 34, the starting end portion 28 a or the terminating end portion 28 b of the wire 28 is drawn in the direction of arrow C in a state where the long side of the flat wire is aligned with the arrow A direction, and stored in each of the conducting wire holding grooves 34 a to 34 d. .

  In the deepest lead wire holding groove 34a, the terminal portions 28b of 18 wires 28 in total are drawn from and stored in all phases. The other conductor holding grooves 34b to 34d have a shallower depth than the conductor holding groove 34a. In the conducting wire holding groove 34b, the start end portions 28a of the six wires 28 in total in the U1 phase to the U6 phase are drawn and stored. In the conducting wire holding groove 34c, the start end portions 28a of the six wires 28 in total in the V1 phase to the V6 phase are drawn and stored. In the lead wire holding groove 34d, the start end portions 28a of the six wires 28 in total in the W1 phase to W6 phase are drawn and stored.

  The start end portion 28a of each wire 28 constituting the U1 phase to U6 phase coil 20 is connected to the input terminal U, and the start end portion 28a of each wire 28 constituting the V1 phase to V6 phase coil 20 is connected to the input terminal V. The starting end portion 28a of each wire 28 constituting the W1-phase to W6-phase coil 20 is connected to the input terminal W, and the coils 20 of all phases (U1-U6 phase, V1-V6 phase, W1-W6 phase). Are connected to the neutral terminal N. As shown in FIG.

  The end fixing part 36 is a part for fixing the end part 28 b of the wire 28 wound around the winding part 30. The terminal fixing portion 36 is constituted by a first groove portion 40 extending in the direction of arrow C and a second groove portion 42 extending in the direction of arrow B, and is a substantially L-shaped groove portion 38 in plan view (see FIG. 3). Have The width of the first groove portion 40 (the length along the arrow B direction) is set to be substantially the same as the length of the short side in the flat cross section of the wire 28. The second groove portion 42 communicates with the conductor holding groove 34a.

  With respect to the split core portion 12 configured in this way, the first pulley 46a and the second pulley 46b shown in FIG. 3 and the wire insertion device 14 shown in FIG. 34a to 34d and the groove portion 38), the step of inserting the start end portion 28a and the end portion 28b of the wire 28 (wire insertion step) can be performed. In the wire insertion process, after the terminal end 28b of the wire 28 is temporarily fixed to the terminal fixing portion 36, the terminal end 28b is drawn around and stored in the conductive wire holding groove 34a, while the starting end portion 28a of the wire 28 is connected to the conductive wire holding groove 34b. ~ 34d to be stored.

  As a pre-process of the wire insertion process, as shown in FIG. 3, a start end portion 28 a that is one end portion of the wire 28 extending from the coil 20 wound around the winding portion 30 of the split core portion 12 is temporarily set. The coil 28 is wound around the first pulley 46a as a winding pulley, and the terminal end 28b, which is the other end of the wire 28 extending from the coil 20, is wound around the second pulley 46b as another temporary winding pulley.

  The first pulley 46 a has a groove portion 48 that winds up the starting end portion 28 a of the wire 28. The second pulley 46 b has a groove 50 that winds up the terminal end 28 b of the wire 28. In each of the first pulley 46a and the second pulley 46b, the start end portion 28a and the end end portion 28b of the wire 28 are wound so that the long side of the flat section of the wire 28 is along the bottom surface of the groove portion.

  The wire insertion device 14 shown in FIG. 4 draws and stores the starting end portion 28a of the wire 28 wound around the first pulley 46a into one of the conductor holding grooves 34b to 34d, and is wound around the second pulley 46b. In this device, the end portion 28b of the wire 28 is inserted into the groove portion 38 of the end fixing portion 36, temporarily fixed to the end fixing portion 36, and drawn around the lead wire holding groove 34a.

  The wire insertion device 14 includes a first pulley drive mechanism 50a for causing the first pulley 46a to rotate and move, and a second pulley drive mechanism 50b for causing the second pulley 46b to rotate and move. The wire insertion device 14 is configured substantially symmetrically in the horizontal direction with respect to the position of the divided core portion 12. Note that the split core portion 12 is fixed to a stage or the like (not shown).

  As shown in FIG. 4, the first pulley drive mechanism 50a is supported by the elevating mechanism 52a, the turning mechanism 54a supported by the elevating mechanism 52a, the slide mechanism 56a supported by the turning mechanism 54a, and the slide mechanism 56a. A roll mechanism 58a and a pulley holding portion 60a supported by the roll mechanism 58a.

  The elevating mechanism 52a elevates and lowers the support portion 66 fixed to the upper end of the elevating shaft 64 by advancing and retracting the elevating shaft 64 in the vertical direction by a drive source 62 (for example, a cylinder device or the like). The turning mechanism 54a is fixed to the support portion 66 of the elevating mechanism 52a. The turning mechanism 54 a includes a first arm 68 fixed to the support portion 66, a first rotation drive source 70 provided at one end of the first arm 68, and a power such as a belt provided at the other end of the first arm 68. And a shaft member 74 that is driven to rotate about the vertical axis via the transmission unit 72.

  The slide mechanism 56 a includes a second arm 76 extending in the horizontal direction from the shaft member 74, and a linear actuator 78 built in the second arm 76. Under the driving action of the turning mechanism 54a, the second arm 76 rotates in the horizontal direction with the shaft member 74 as the central axis.

  The roll mechanism 58 a has a shaft portion 80 that can rotate around a horizontal axis, and is supported by the slide mechanism 56 a via a support portion 81. The lower end portion of the support portion 81 is fixed to a slider that is a movable portion of the linear actuator 78. Therefore, the roll mechanism 58 a is movable in the horizontal direction along the second arm 76 under the driving action of the linear actuator 78.

  The pulley holding portion 60a is fixed to the shaft portion 80 of the roll mechanism 58a. The first pulley 46a is detachable and supports the attached first pulley 46a rotatably.

  The first pulley drive mechanism 50a configured as described above three-dimensionally moves the first pulley 46a held by the pulley holding portion 60a under the drive action of the elevating mechanism 52a, the turning mechanism 54a, and the slide mechanism 56a. Thus, the relative position of the first pulley 46a with respect to the divided core portion 12 can be changed.

  Further, under the driving action of the roll mechanism 58a, the pulley holding portion 60a and the first pulley 46a held thereby rotate around the shaft portion 80. Accordingly, the first pulley drive mechanism 50a rotates (rolls) the first pulley 46a around the shaft portion 80 of the roll mechanism 58a, whereby the insulator 26 and the first pulley 46a of the starting end portion 28a of the wire 28 are rotated. The part between can be twisted.

  As shown in FIG. 5, the pulley holding portion 60a is rotatably supported by the holding portion main body 82 constituting a housing fixed to the shaft portion 80 (see FIG. 4) of the roll mechanism 58a, and the holding portion main body 82. In addition, a rotation shaft portion 84 to which the first pulley 46 a can be attached and detached, and a tension applying device 86 that applies tension to a portion of the wire 28 between the first pulley 46 a and the insulator 26 are provided. In the following description, when the first pulley 46a and the second pulley 46b are not particularly distinguished, they are simply referred to as “pulley 46”.

  The rotation shaft portion 84 is rotatably supported by the holding portion main body 82 about the axis line a perpendicular to the rotation axis line of the shaft portion 80 of the roll mechanism 58a via the bearing 88. The rotary shaft portion 84 is displaceable with respect to the shaft body portion 90 along the axis a, and a hollow cylindrical shaft body portion 90, a plurality of arms 92 supported by the shaft body portion 90 so as to be swingable. It has an operation shaft 94 that opens and closes the arm 92 in accordance with the displacement, and a drive shaft 96 connected to the operation shaft 94.

  The plurality of arms 92 are arranged at predetermined intervals in the circumferential direction around the axis a. The number of arms 92 is, for example, 2 to 5. Each arm 92 is swingable around a support shaft 93 provided at an intermediate portion in the longitudinal direction of the arm 92.

  An engaging member 98 that can engage with the shaft portion 47 of the pulley 46 is provided at one end portion (upper end portion in FIG. 5) of each arm 92. Concave and convex portions 99 (tooth portions) are engraved on the inner side of the engaging member 98 (the site on the axis a side). On the other hand, on the outer peripheral portion of the shaft portion 47 of the pulley 46, an uneven portion 49 (tooth portion; see also FIG. 3) that can mesh with the uneven portion 99 of the engaging member 98 is provided.

  When the shaft portion 47 of the pulley 46 is disposed inside the plurality of arms 92 and the plurality of arms 92 are closed, the engaging member 98 and the outer peripheral portion of the pulley 46 are engaged with each other. The engagement between the engaging member 98 and the outer peripheral portion of the shaft portion 47 of the pulley 46 prevents relative rotation between the rotating shaft portion 84 and the pulley 46. Further, when the plurality of arms 92 are closed, the pulley 46 is prevented from being detached from the rotating shaft portion 84 by an inwardly protruding locking protrusion 95 provided at the upper end portion of the arm 92.

  A roller 100 is rotatably provided at the other end (lower end in FIG. 5) of each arm 92. In addition, a spring 104 that elastically biases the arm 92 in the direction in which the arm 92 is opened is disposed between the cylindrical member 102 constituting a part of the shaft body 90 and each arm 92.

  The opening / closing operation of the plurality of arms 92 is driven by the operating shaft 94. In the present embodiment, the operating shaft 94 is disposed inside the shaft body 90 so as to be slidable along the axial direction. The operating shaft 94 is formed in a hollow shape with one end opened, and has a cam portion 106 that pushes the roller 100 of the arm 92 outward (in a direction away from the axis a) as the shaft moves. The outer surface of the cam portion 106 is formed in a tapered shape whose outer diameter increases toward the opening side of the operating shaft 94.

  Further, the operating shaft 94 includes a straight portion 108 provided on the distal end side of the cam portion 106 and a fitting portion 110 provided on the distal end side of the straight portion 108. The straight portion 108 has a smaller diameter than the cam portion 106 and has a constant outer diameter in the axial direction. The fitting part 110 has a smaller diameter than the straight part 108 and is configured to be fitted into the hole 51 of the pulley 46.

  The drive shaft 96 is inserted into the operating shaft 94 configured as described above, and is connected and fixed to the distal end portion of the operating shaft 94 at the distal end portion thereof. Therefore, the drive shaft 96 and the operation shaft 94 can be integrally operated along the axis a. The base end side of the drive shaft 96 passes through the end wall 91 of the shaft body portion 90 and is exposed to the outside of the holding portion main body 82. A spring 112 is disposed between the drive shaft 96 and the shaft body 90 and inside the operating shaft 94 to elastically bias the shaft body 90 in the distal direction.

  When the operating shaft 94 is located at the retracted position shown in FIG. 6, the cam portion 106 of the operating shaft 94 is retracted from the roller 100 and is biased in the direction in which the arm 92 is opened by the elastic biasing force of the spring 104. Therefore, the plurality of arms 92 are open. Accordingly, the pulley 46 can be attached to and detached from the rotating shaft portion 84. The operating shaft 94 is always urged in the distal direction by a spring 112 via a drive shaft 96. For this reason, an appropriate drive device (for example, a cylinder device or the like) (not shown) is provided outside the pulley holding portion 60a, and the operation shaft is resisted against the elastic biasing force of the spring 112 using the drive device. 94 is moved to the retracted position.

  On the other hand, when the operating shaft 94 moves in the distal direction from the retracted position, the roller 100 is displaced outward by the cam portion 106 of the operating shaft 94, while the arm is resisted by the elastic biasing force of the spring 104. The engaging member 98 of 92 is displaced to the axis line a side. Therefore, as the operating shaft 94 moves to the advanced position as shown in FIG. 5, the plurality of arms 92 are closed. Since the operating shaft 94 is always urged in the distal direction by the spring 112 via the drive shaft 96, the operating shaft 94 can move to the advanced position without using the driving force of the driving device.

  Next, the configuration of the tension applying device 86 will be specifically described.

  The tension applying device 86 includes a transmission mechanism 114 that operates in synchronization with the rotation of the pulley 46 and an elastic member 116 that elastically biases the transmission mechanism 114, and the pulley 46 is based on the elastic biasing force of the elastic member 116. By applying a force in the rotational direction to the wire 28, tension is applied to the wire 28 (the portion between the insulator 26 and the pulley 46).

  As shown in FIGS. 5 and 6, in this embodiment, the transmission mechanism 114 includes a gear member 118 that can rotate in synchronization with the rotation of the pulley 46, and a movable member 120 that meshes with the gear member 118. In FIG. 6, illustration of members other than those necessary for the description is omitted. The gear member 118 is concentrically fixed to the shaft body portion 90 of the rotation shaft portion 84 by a plurality of bolts 121. That is, the gear member 118 can rotate integrally with the rotary shaft portion 84 about the axis line a. As shown in FIG. 7, a tooth portion 119 is formed on the entire outer periphery of the gear member 118 along the circumferential direction. The gear member 118 may be formed with a tooth portion 119 only in a necessary range rather than the entire circumference in the circumferential direction.

  The movable member 120 has a rack portion 122 that meshes with the gear member 118 (tooth portion 119), and is a member that moves linearly as the gear member 118 rotates. Specifically, the movable member 120 is a long member disposed so as to be movable along a direction orthogonal to the axis a. The rack portion 122 is formed on one side of the movable member 120 along the longitudinal direction of the movable member 120. In the case of this embodiment, the movable member 120 is formed in a hollow cylindrical shape with one end closed and the other end opened.

  The movable member 120 is housed in a case portion 124 that forms a part of the holding portion main body 82. One end portion in the longitudinal direction of the case portion 124 is closed by a first lid member 126, and the other end portion in the longitudinal direction of the case portion 124 is closed by a second lid member 128. Note that guide sleeves 129 and 130 for smoothly guiding the axial movement of the movable member 120 are provided on the inner peripheral portion of the case portion 124.

  The elastic member 116 elastically biases the movable member 120 in the movable direction. In the present embodiment, the elastic member 116 has a spring shape, and elastically moves the movable member 120 toward the first lid member 126 side. Is energized. The elastic member 116 is disposed between the movable member 120 and the second lid member 128. One end side of the elastic member 116 is inserted into the hollow portion 120a of the movable member 120, and the other end side of the elastic member 116 is the first side. It is inserted into a recess 128 a provided in the two lid member 128. One end and the other end of the elastic member 116 may or may not be fixed to the first lid member 126 and the second lid member 128, respectively. The first lid member 126 is provided with a stopper 132 that stops the movable member 120 by coming into contact with one end of the movable member 120.

  Since the tension applying device 86 is configured as described above, when the pulley 46 attached to the rotation shaft portion 84 rotates around the axis line a, the rotation of the pulley 46 is rotated via the rotation shaft portion 84 to the gear member 118. , The gear member 118 rotates in synchronization with the pulley 46. The rotation of the gear member 118 is converted into a linear motion of the movable member 120 by meshing between the tooth portion 119 of the gear member 118 and the rack portion 122 of the movable member 120. That is, as the gear member 118 rotates, the movable member 120 moves along its longitudinal direction.

  On the other hand, since the movable member 120 is always elastically supported (biased) by the elastic member 116, the movable member 120 has the axis a in FIG. 7 except when the movable member 120 is locked by the stopper 132. A force is applied to the gear member 118 in the clockwise direction centering on. When this force is transmitted to the pulley 46 via the rotation shaft portion 84, a rotational force in the direction of winding the wire 28 acts on the pulley 46. As a result, tension is applied to a portion of the wire 28 between the insulator 26 and the pulley 46.

  A plurality of gear members may be interposed between the rotating shaft portion 84 and the movable member 120.

  In FIG. 4, the second pulley drive mechanism 50b has the same configuration as the first pulley drive mechanism 50a. That is, the second pulley drive mechanism 50b includes a lift mechanism 52b and a swing mechanism configured in the same manner as the lift mechanism 52a, the swing mechanism 54a, the slide mechanism 56a, the roll mechanism 58a, and the pulley holding portion 60a in the first pulley drive mechanism 50a. 54b, a slide mechanism 56b, a roll mechanism 58b, and a pulley holding portion 60b. The pulley holding portion 60 b has a tension applying device 86. Therefore, the second pulley drive mechanism 50b can move the second pulley 46b in a three-dimensional manner and rotate the second pulley 46b (roll operation) around the shaft portion 80 of the roll mechanism 58b. Of the end portion 28b of the wire 28, the portion between the insulator 26 and the second pulley 46b can be twisted.

  Next, the operation of the wire insertion device 14 configured as described above will be described. Here, the end portion 28b of the wire 28 is temporarily fixed to the end fixing portion 36 of the single split core portion 12 in which the coil 20 is formed, and then the start end portion 28a of the wire 28 is connected to any of the conductor holding grooves 34b to 34d. A case will be described in which the end portion 28b is retracted and stored in the conductor holding groove 34a. 8A to 9B, only the positional relationship among the split core portion 12, the first pulley 46a, and the second pulley 46b by the wire insertion device 14 is illustrated, and the illustration of the configuration of the wire insertion device 14 is omitted.

  The wire insertion device 14 performs the following first to fourth steps.

  In the first step, the split core portion 12, the first pulley 46a, and the second pulley 46b are conveyed to the wire insertion device 14, and the top and bottom of the split core portion 12 are reversed and placed on a stage (not shown). Further, the first pulley 46a is held by the pulley holding portion 60a of the first pulley driving mechanism 50a, and the second pulley 46b is held by the pulley holding portion 60b of the second pulley driving mechanism 50b.

  At this time, under the action of the tension applying device 86 provided in each of the pulley holding portions 60a and 60b, tension is applied to a portion between the insulator 26 and the first pulley 46a in the starting end portion 28a of the wire 28, and Tension is applied to a portion between the insulator 26 and the second pulley 46b in the end portion 28b of the wire 28.

  Specifically, the movable member 120 is separated from the first lid member 126 (stopper 132) against the elastic urging force of the elastic member 116 (the movable member 120 is separated from the first lid member 126 and the second lid member 128). The first pulley 46a around which the split core portion 12, the starting end portion 28a of the wire 28 is wound, and the second pulley 46b around which the end portion 28b of the wire 28 is wound, Each is set on the stage, one pulley holding portion 60a and the other pulley holding portion 60b. Accordingly, an elastic member is provided between a portion between the insulator 26 and the first pulley 46a in the start end portion 28a of the wire 28 and a portion between the insulator 26 and the second pulley 46b among the end portion 28b of the wire 28. The tension based on the elastic biasing force 116 is applied.

  In this first step, the portion between the insulator 26 and the second pulley 46b in the end portion 28b of the wire 28 is appropriately inserted into the groove 38 of the insulator 26 in the next step (second step). Further, the second pulley 46b is rotated around the shaft portion 80 by the roll mechanism 58b, thereby twisting the portion as shown in FIG. 8A. In this case, a portion of the terminal portion 28b of the wire 28 between the insulator 26 and the second pulley 46b is given a tension based on the elastic biasing force of the elastic member 116 (see FIG. 7). Therefore, the portion of the wire 28 can be twisted appropriately.

  For the end portion 28b of the wire 28, a correlation between the twist angle at the second pulley 46b and the twist angle at the portion to be inserted into the groove 38 is obtained in advance by a preliminary experiment or the like. The second pulley 46b can be rotated using the correlation.

  In the second step, as shown in FIG. 8B, the end portion 28b of the wire 28 is terminated by inserting the wire portion twisted in the first step into the groove portion 38 (see also FIG. 3) of the end fixing portion 36. Temporarily fixed to the fixing portion 36. Specifically, the second pulley 46b is lowered to a predetermined position under the driving action of the lifting mechanism 52b, then the second pulley 46b is horizontally moved under the driving action of the turning mechanism 54b, and then the lifting mechanism 52b. The second pulley 46b is raised under the driving action of the wire 28, whereby the terminal portion 28b of the wire 28 is inserted into the groove portion 38. Also in this case, since the tension is applied to the portion between the insulator 26 and the second pulley 46b in the terminal portion 28b of the wire 28 under the action of the tension applying device 86, the portion to the groove portion 38 is applied. Insertion can be performed appropriately.

  In the third step, after the wire 28 is inserted into the groove portion 38 in the second step, the second pulley 46b is rotated around the shaft portion 80 in the direction opposite to the rotation direction in the first step. This eliminates the twisting of the portion between the end fixing portion 36 and the second pulley 46b in the end portion 28b of the wire 28. Also in this case, since tension is applied to the wire 28 under the action of the tension applying device 86, twisting of the portion of the wire 28 can be appropriately performed.

  In the fourth step, as shown in FIG. 9A, the first pulley 46a is moved and the starting end portion 28a of the wire 28 is routed to one of the conductor holding grooves 34b to 34d and stored, and as shown in FIG. 9B, 2 The pulley 46b is moved and the terminal portion 28b of the wire 28 is drawn to the conducting wire holding groove 34a and stored.

  Specifically, by moving the first pulley 46a horizontally under the driving action of the turning mechanism 54a (see FIG. 4), as shown in FIG. 9A, the start end portion 28a of the wire 28 is moved to any of the conductor holding grooves 34b to 34d. Pull it to the crabs and store (insert). In this case, a part of the starting end portion 28a of the wire 28 is drawn out from the first pulley 46a, but the portion of the starting end portion 28a between the insulator 26 and the first pulley 46a is under the action of the tension applying device 86. Since tension | tensile_strength is provided, insertion of the start end part 28a to either of the conducting wire holding grooves 34b-34d can be implemented appropriately. When the height of the first pulley 46a is not adjusted to the height corresponding to any position of the target conductor holding grooves 34b to 34d, the lifting mechanism 52a (see FIG. 4) causes the first pulley 46a to Adjust the height.

  In addition, in order to insert the starting end portion 28a of the wire 28 into any of the conductor holding grooves 34b to 34d in an appropriate direction, the first pulley 46a centering on the shaft portion 80 is moved before the first pulley 46a is horizontally moved. It is necessary to twist the starting end portion 28a of the wire 28 by the rotation. The twisting of the starting end portion 28a may be performed before the first step described above or in parallel with the first to third steps.

  Further, by horizontally moving the second pulley 46b under the driving action of the turning mechanism 54b (see FIG. 4), as shown in FIG. 9B, the terminal end 28b of the wire 28 is routed to the conducting wire holding groove 34a and stored (inserted). )can do. In this case, a part of the end portion 28b of the wire 28 is fed out from the second pulley 46b, but the portion of the end portion 28b between the insulator 26 and the second pulley 46b is under the action of the tension applying device 86. Since the tension is applied, the terminal portion 28b of the conductor holding groove 34a can be properly inserted. When the height of the second pulley 46b is not adjusted to the height corresponding to the position of the conductor holding groove 34a, the height of the second pulley 46b is adjusted by the lifting mechanism 52b (see FIG. 4). That's fine.

  As described above, the wire inserting device 14 is provided with the tension applying device 86. According to the tension applying device 86, tension is applied to the wire 28 using the elastic biasing force of the elastic member 116, so that the tension applying device 86 is compared with a conventional device that applies tension by driving the motor. Weight reduction is possible. For this reason, the pulley 46 can be moved at high speed. Moreover, since the rigidity of the other part of the installation (wire insertion apparatus 14) provided with the tension | tensile_strength provision apparatus 86 can be reduced with weight reduction, an installation can be reduced in size. Therefore, in the case where a plurality of pulleys 46 are provided as in the wire insertion device 14, the pulleys 46 can be brought close to each other to save space.

  Further, since the tension applying device 86 has no motor wiring, the degree of freedom of the movement range of the pulley 46 is increased. Moreover, in the conventional application of tension by driving the motor, it is necessary to always control the length of the wire 28, whereas with the tension applying device 86, the winding of the wire 28 on the pulley 46 is performed. Appropriate tension can always be applied by the elastic member 116 in accordance with the change in the length of the wire 28 accompanying the feeding.

  In the present embodiment, the transmission mechanism 114 is provided with a gear member 118 that can rotate in synchronization with the rotation of the pulley 46 and a rack portion 122 that meshes with the gear member 118, and linearly as the gear member 118 rotates. The elastic member 116 urges the movable member 120 in the movable direction of the movable member 120. With this configuration, the rotational movement of the gear member 118 is converted into the linear movement of the movable member 120, and the urging force of the elastic member 116 is transmitted to the pulley 46 via the movable member 120. Therefore, a mechanism that reliably and suitably applies tension to the wire 28 can be constructed with a simple configuration.

  Furthermore, in this embodiment, the movable member 120 is formed in a hollow cylindrical shape, and the elastic member 116 is inserted into the movable member 120. With this configuration, by inserting the elastic member 116 inside the movable member 120, the space can be used effectively, and the length of the transmission mechanism 114 can be shortened. Therefore, the size of the tension applying device 86 can be further reduced.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 12 ... Divided core part 26 ... Insulator 28 ... Wire 28a ... Start-end part 28b ... Termination part 46a ... 1st pulley 46b ... 2nd pulley 86 ... Tension applying device 114 ... Transmission mechanism 116 ... Elastic member 118 ... Gear member 120 ... Movable member

Claims (3)

A tension applying device that applies tension to a portion between the workpiece and the pulley of a wire partly connected to the workpiece and the other part wound around the pulley,
A transmission mechanism that operates in synchronization with the rotation of the pulley;
An elastic member that elastically biases the transmission mechanism,
By applying a force in the rotational direction to the pulley based on the elastic biasing force of the elastic member, tension is applied to the wire.
A tension applying device. The tension applying device according to claim 1, wherein
The transmission mechanism is
A gear member rotatable in synchronization with rotation of the pulley;
A rack portion that meshes with the gear member, and a movable member that moves linearly as the gear member rotates,
The elastic member biases the movable member in a movable direction of the movable member;
A tension applying device. The tension applying device according to claim 2, wherein
The movable member is formed in a hollow cylindrical shape,
The elastic member is inserted into the movable member;
A tension applying device.

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