JP4447480B2 - Coil winding method and apparatus - Google Patents

Description

  The present invention provides a single air-core coil that is used as a set of a plurality (for example, four), such as a tracking coil used in an optical pickup for reading an electrical signal of an optical information recording disk. The present invention relates to a coil winding method and apparatus that can be manufactured without using a continuous wire.

Conventionally, for example, a tracking coil that uses the four air-core coils as a set is wound by a double air-core coil winding machine that winds two coils with one continuous wire. In addition, the dual air core coils are electrically connected to each other to produce a four air core coil.
Apart from this, a plurality of (for example, four) air-core coils can be formed using a single continuous wire rod. A coil winding apparatus has been proposed (Patent Document 1). This spindle rotation type plural air core coil winding device includes a housing having a plurality of winding cores forming a coil and a slide mechanism on a rotating spindle, and each winding core position is set to the spindle. It is characterized in that a winding turret mechanism that can be moved and set sequentially or arbitrarily is provided at the rotation center.

JP2003-77750A

However, the former two-unit air-core coil winding machine has a structure limited to two-unit winding, for example, for producing a plurality of coils (for example, four coils). Is difficult to apply.
The latter spindle rotation type multiple coil winding device
(A) Since the turret mechanism is adopted, an expensive core for a plurality of stations is required in a plurality of stations, so that costs for initial and specification changes are incurred.
(B) Centering with the tail side spindle and setting of the crossover line length must be performed for a plurality of consecutive pieces, which makes it difficult to mount and adjust jig parts.
(C) In addition, there are concerns about the effects of center runout caused by the alignment of a plurality of cores, and when trying to ensure the alignment required for the coil, the number of rotations does not increase and it is an important factor in the unit price of the coil This also has an adverse effect on the production tact.
And so on.
Accordingly, the present invention provides a coil winding method and apparatus capable of winding a plurality of (for example, four) air-core coils using a single continuous wire, thereby providing the above-described conventional technique. The purpose is to solve the problems.

For this reason, the technical solution means adopted by the present invention is:
A coil winding method for forming a plurality of coils using a single continuous wire, wherein a plurality of intermediate guides are held by an external chuck between a tail shaft guide and a main shaft guide, and then held by an external chuck. After supporting the intermediate guide by penetrating the winding core from one side of the tail shaft guide or the main shaft guide to the other side in the through hole formed in the guide, the external chuck holding the intermediate guide is retracted, and then The intermediate guide on the winding core is positioned by the tail shaft side chuck provided on the tail shaft, the wire is wound around the winding core at the first coil winding position positioned by the intermediate guide, and then the tail shaft side again. The intermediate guide is positioned by the chuck and the chuck on the main shaft side to determine the next coil winding position, and the wire is placed on the core where the next coil winding position is positioned. And winding a coil winding method for winding a coil group including a plurality of sets by repeating multiple times the winding operations as described above.
Also, a coil winding method in which a plurality of coils are formed using a single continuous wire, and (a) a step of holding a plurality of intermediate guides by an external chuck between the tail shaft guide and the main shaft guide. (B) A step of supporting the intermediate guide by penetrating the winding core from one side of the tail shaft guide or the main shaft guide to the other side in a through hole formed in the shaft center portion of the intermediate guide held by the external chuck. (C) A step of retracting the external chuck holding the intermediate guide. (D) A step of positioning an intermediate guide on the winding core by a tail shaft side chuck provided on the tail shaft to determine an initial coil winding position. (E) A step of winding a wire around a core of a coil winding position positioned by the intermediate guide. (F) A step of determining the next coil winding position by positioning the intermediate guide again by the tail shaft side chuck and the main shaft side chuck after the end of the winding. (G) A step of winding a wire around a core whose next coil winding position is positioned by the intermediate guide. (H) A step of winding a coil group consisting of a plurality of sets by repeating the winding operation as described above a plurality of times. (I) A step of holding the intermediate guide by an external chuck after the winding of the coil group is completed. (J) A step of storing the winding core in one of the tail shaft and the main shaft while the intermediate guide is held by the external chuck. (K) A step of retracting the external chuck while the intermediate guide is held by the external chuck, and retracting the intermediate guide from the winding. (L) A coil winding method comprising a step of taking out a plurality of air core coils without cutting off the connecting wire between the coils while the intermediate guide is retracted.
Coil windings characterized in that when holding the intermediate guide by the external chuck, fork-like spacers are inserted between the intermediate guides and at the end portions of the intermediate guides so that the interval between the intermediate guides can be automatically adjusted. Is the method.
The external chuck is composed of two opposing chucks, each of the external chucks is configured to be able to hold the corresponding intermediate guide from the opposing side, and the intermediate chuck held by the respective chucks. Coils wound in opposite directions are formed on the winding core between the guides. After the coil winding is completed, the external chuck is retracted in the opposite direction, and the coils in which the winding direction of the wire is reversed are wound on the winding core. The coil winding method is characterized in that a plurality of air-core coils are formed without being cut off between the coils.
Further, a coil winding apparatus used for the above-described coil winding method, the apparatus being rotatably held by one main frame among a pair of main frames standing on a base member, and A tail shaft that is rotated by a driving device, a main shaft that is rotatable on the other main frame and held opposite to the tail shaft, and is further rotated by the driving device in synchronization with the tail shaft; A winding core housed in any one of the main shafts so as to be able to advance and retreat, a plurality of intermediate guides arranged between the tail shaft guide and the main shaft guide and having a through hole in the winding core, the tail shaft and the main shaft And a tail shaft side chuck and a main shaft side chuck for holding and releasing the intermediate guide, and a freely movable holding chuck and intermediate guide positioning for holding the intermediate guide. And an external chuck composed of a fork-like spacer that can be moved forward and backward, and an intermediate guide is used for a winding core that is provided through a plurality of intermediate guides arranged between the tail shaft guide and the main shaft guide. Then, the coil winding machine is characterized in that a plurality of coils can be wound without cutting the connecting wire between the coils, and the plurality of coils can be taken out after the winding.
Further, a coil winding apparatus used for the above-described coil winding method, the apparatus being rotatably held by one main frame among a pair of main frames standing on a base member, and A tail shaft that is rotated by a driving device, a tail shaft guide frame that controls the amount of advance and retreat of the tail shaft in the axial direction, and a main shaft that can be rotated and held facing the tail shaft, and further driven A main shaft that is rotated by the device in synchronization with the tail shaft, a winding core that is housed in either the tail shaft or the main shaft so as to be able to advance and retreat, and the tail shaft side guide and the main shaft side guide. And a plurality of intermediate guides having through-holes in the winding core, and a tail shaft side chuck and a main shaft side provided in the tail shaft and the main shaft, and capable of holding and releasing the intermediate guide. A plurality of chucks, and an external chuck composed of a movable chuck for holding the intermediate guide and a fork-like spacer for positioning the intermediate guide, and is arranged between the tail shaft guide and the main shaft guide. A plurality of coils can be wound around a winding core provided through the intermediate guide without using the intermediate guide to cut the connecting wire between the coils, and the plurality of coils can be taken out after winding. It is a coil winding machine characterized by this.
In addition, the tail shaft side chuck and the main shaft side chuck are coil winding machines characterized in that they can be moved forward and backward in the axial direction and can be opened and closed in the centrifugal direction.
The external chuck is a coil winding machine configured as two external chucks facing each other.

According to the coil winding method and the apparatus of the present invention, a plurality of (for example, four) air-core coils can be wound using a single continuous wire, thereby improving coil manufacturing efficiency. be able to.
Moreover, this coil winding machine can manufacture a highly accurate coil at a low cost by providing means for performing realignment of the intermediate guide by automatic alignment.
Further, when the tail shaft side chuck or the main shaft side chuck is opened and moved, each of the intermediate guides is free on the winding core in the axial direction. Therefore, when the chuck on the tail shaft side and the chuck on the main shaft side are opened and moved, a fork-like spacer is used between the intermediate guides by using an external chuck between each intermediate guide leaving a slight margin with respect to the actual winding width. This makes it easier to re-grip.
In addition, the fork-like spacer is moved to the side surface of the wound coil when the wound coil is taken out after the end of the series of windings, thereby maintaining the fixed position of the coil when the intermediate guide is removed. At this time, the holding chuck of the external chuck is structured so as to be nested with the fork-like spacer, and is located close to the tail shaft side and the main shaft side chuck. In this state, the tail shaft side chuck and the main shaft side are located. The chuck is opened, the intermediate guide is released, and it is stored in the tail shaft or the main shaft. Next, the external chuck moves to the position where the intermediate guide is taken out, grips the intermediate guide leaving a slight gap, then pulls out the winding core, and moves and positions the holding chuck with the fork spacer on the side of the coil. Remove the intermediate guide in the state. Further, when the fork-like spacer is moved back to a predetermined position in this state, the wound coil is left behind between the tail shaft guide and the main shaft guide, and the wound coil can be easily taken out. .
Also, the external chuck holding chuck is in the position of the intermediate guide so that the external chuck can be moved to the core insertion position and the core can be smoothly inserted by the external chuck arranged outside the rotation axis of the main shaft and tail shaft. Hold the intermediate guide with a slight margin so that it can be held.
In addition, the winding width between the main shaft guide and the tail shaft guide in the winding of a plurality of continuous coils is set by a total obtained by adding a subtotal for each intermediate guide to a subtotal for each coil winding width. For this reason, in the conventional mechanical type (for example, bolt and nut) positioning, it is very troublesome to adjust each time the winding width setting is changed, and the entire tail shaft side guide frame is moved and positioned by a feed screw or the like. Although the mechanism is complicated and expensive, in the present invention, it is easy to input numerical values to a stopper mechanism that is configured by connecting an electric motor to a trapezoidal screw or precision screw and nut that is generally commercially available or processable. The winding width can be adjusted.

  When forming a plurality of coils using one continuous wire rod, a plurality of intermediate guides are held by an external chuck between the tail shaft guide and the main shaft guide, and then a through hole formed in the intermediate guide held by the external chuck After supporting the intermediate guide through the winding core from one side of the tail shaft guide or the main shaft guide to the other side, the external chuck holding the intermediate guide is retracted, and then the tail provided on the tail shaft The intermediate guide on the winding core is positioned by the chuck on the spindle side and the chuck on the spindle side provided on the spindle, and the wire is wound around the winding core at the first coil winding position positioned by the intermediate guide. Position the next coil winding position by positioning the intermediate guide by the chuck on the tail shaft side and the chuck on the main shaft side to determine the next coil winding position. And winding the wire to a winding core which is fit to the windings of the coil group including a plurality of sets by repeating multiple times the winding operations as described above.

The configuration of the coil winding machine according to the present invention will be described below with reference to the drawings.
First, the overall structure of the coil winding machine will be described with reference to FIGS. 1, 2 and 3, and then the detailed structure will be described with reference to the drawings corresponding to each member.

  FIG. 1 is a schematic diagram (partially sectional view) of the entire front view of the coil winding machine according to this embodiment capable of manufacturing four coils at the same time, and FIG. 2 is a plan view of the coil winding machine. 3 is a view in the direction of arrow A in FIG. 1, 2, and 3 are not all the members shown in the drawings as illustrated in the design drawings, but are drawn mainly on members necessary for explaining the present invention. Moreover, in the following description, left and right are left and right in the front view.

  In the front view of FIG. 1, reference numerals 100L and 100R denote left and right main frames constituting the coil winding machine, which are fixed to a base member 100B and are configured as a pair of left and right as shown in the figure. The main shaft 1 is rotatably supported on the left main frame 100L, and the tail shaft 2 is rotatably supported on the right main frame 100R so as to be rotatable and movable in the axial direction. The right frame 3 is disposed on the left side of the right main frame 100R in the drawing, the tail shaft side guide frame 4 is disposed on the right side of the right main frame 100R, and two connecting shafts are provided on the tail shaft side guide frame 4. 5 (to be described later) are combined by appropriate means. On the other hand, the left frame 6 is arranged on the right side of the left main frame 100L in the figure.

  The two connecting shafts 5 are constituted by parallel shafts, and the connecting shaft 5 passes through the right main frame 100R, the right frame 3, the left frame 6, and the left main frame 100L, and is rotatably supported in the axial direction. ing. A connecting member 7 is coupled to the left ends of the two connecting shafts 5, and an output shaft 9 of a cylinder 8 fixed to the left main frame 100L is attached to the connecting member 7 by an appropriate means. With this configuration, when the cylinder 8 is driven, the two connecting shafts 5 move in the axial direction, and a tail shaft side guide frame 4 (described later) fixed to the right end of the two connecting shafts 5 is shown in the figure. It can be moved in the left-right direction.

  The tail shaft side guide frame 4 holds the tail shaft 2 above the tail shaft side guide frame 4 in a state in which the tail shaft 2 is rotatable and prohibited from moving in the axial direction (this state will be described in detail later). Further, four support members 10 (see the plan view in FIG. 2) are fixed to the tail shaft side guide frame 4, and a core moving cylinder 11 is attached to an end portion of the support member 10. Further, an absorption mechanism 12 is disposed between the tail shaft side guide frame 4 and the core moving cylinder 11 as shown in FIGS.

4A and 4B are a plan sectional view and a front sectional view of the main shaft 1 and the tail shaft 2 portion.
In FIG. 4, the absorption mechanism 12 includes a spring 13, and has a function of absorbing the amount of axial movement of a winding core 14 (described later) disposed through the center of the tail shaft 2 by the spring 13. Have. The winding core 14 is connected to the output shaft 11a of the winding core moving cylinder 11 via a spring 13 arranged in the absorbing mechanism 12, and the absorbing mechanism 12 is operated by operating the winding core moving cylinder 11. The core 14 can be moved back and forth in the axial direction.
The tail shaft side guide frame 4, the absorption mechanism 12, and the core moving cylinder 11 are integrally assembled by a support member 10, and the tail shaft 2 is rotatable to the tail shaft side guide frame 4 by a bearing 15. It is supported in a state where movement in the direction is prohibited.

  With the above configuration, when the cylinder 8 fixed to the left main frame 100L described above is driven in FIG. 1, the tail shaft side guide frame 4 is shown in the drawing via the output shaft 9, the connecting material 7, and the two connecting shafts 5. Move left and right. As the tail shaft side guide frame 4 moves, the support member 10, the absorption mechanism 12, and the core moving cylinder 11 move together with the tail shaft side guide frame 4, and the tail shaft 2 is directed in the axial direction toward the main shaft 1. Can be advanced or retreated. When the winding core moving cylinder 11 is further operated, the winding core 14 penetrating through the center portion of the tail shaft 2 via the absorption mechanism 12 moves forward and backward in the axial direction toward the main shaft 1.

  In FIG. 1, a guide distance setting motor 16 is fixed to the tail shaft side guide frame 4, and a distance setting stopper 17 is provided on the motor 16. Further, a right feed motor 18 is fixed to the tail shaft side guide frame 4. A screw shaft 19 is coupled to the output shaft of the right feed motor 18, and the right frame 3 is screwed to the screw shaft 19 via a nut (not shown). Therefore, when the right feed motor 18 is driven, the screw shaft 19 rotates, and the right frame 3 screwed to the screw shaft 19 moves in the left-right direction in FIG. A tail shaft side chuck 20 (described later) for holding the intermediate guide coupled to the right frame 3 is also configured to advance and retract in the axial direction together with the right frame 3. Thus, the right feed motor 18 has a function for moving the chuck 20 (details will be described later) for holding the intermediate guide in the axial direction via the right frame 3.

  When the cylinder 8 is driven, the tail shaft side guide frame 4 is separated from and connected to the right main frame 100R via the two connecting shafts 5. At this time, the tail shaft 2 is integrally formed with the tail shaft side guide frame 4. The guide distance setting motor 16 and the right feed motor 18 also move together. With this configuration, when the projection amount of the distance setting stopper 17 is set by the guide distance setting motor 16, the movement distance of the tail shaft side guide frame 4 when the cylinder 8 is operated, that is, the axis of the tail shaft 2 is set. The moving distance in the direction (main axis direction) can be set. At this time, the right feed motor 18 coupled to the tail shaft side guide frame 4 and the right frame 3 screwed to the screw shaft 19 of the right feed motor 18 are also integrally formed by the operation of the cylinder 8. Will move in the direction.

For details of the tail shaft 2 pivotally supported by the right main frame 100R, the right frame 3, and the tail shaft side guide frame 4, (a) a plan sectional view of FIG. 4, (b) a front sectional view, and FIGS. This will be described with reference to an enlarged view of the main part.
The tail shaft 2 is formed as a hollow shaft as shown in FIGS. 4A and 4B, and a pulley 21 is fixed to the right end of the tail shaft 2, and this pulley 21 is shown in FIG. 2 (plan view). As shown, the pulley 22 is connected to the spline shaft 24 via the belt 22. The spline shaft 24 is coupled to a drive motor 25 that is supported and fixed to the left main frame 100L by appropriate means. When the drive motor 25 is driven with this configuration, the tail shaft 2 rotates via the spline shaft 24, the pulley 23, the belt 22, and the pulley 21. The drive motor 25 is also a motor for rotating the main shaft 1 (details will be described later). As a result, the tail shaft 2 rotates in synchronization with the main shaft 1.

FIG. 5 is an enlarged view of part A in FIG.
In FIG. 5, a conical tail shaft guide 2 a is formed at the left end portion of the tail shaft 2. A sleeve 26 is fitted on the outer periphery of the tail shaft 2 with a key 27 so as to be slidable and non-rotatable. The right frame 3 described above is disposed on the outer periphery of the sleeve 26 via a bearing 28.
In addition, a tapered sleeve 30 is attached to the outer periphery of the sleeve 26 by a key 29 so that the sleeves 26 cannot rotate relative to each other and can move in the axial direction. Further, a spring 31 is disposed between the tapered sleeve 30 and the sleeve 26, and the tapered sleeve 30 is always urged to the left in the drawing by the spring 31.

FIG. 6 is an enlarged view of portion B in FIG.
In FIG. 6, a right chuck opening / closing cylinder 32 is fixed to the right frame 3, and a right chuck opening / closing device 33 is attached to the cylinder 32. The right chuck opening / closing device 33 includes a locking member 34, and the locking member 34 is fitted in a groove 35 formed on the outer periphery of the tapered sleeve 30.
A long hole 36 (see the cross section of FIG. 5A-A) is formed in the diameter direction along the axial direction in the tail shaft 2, and a long hole 37 is also formed corresponding to the core 14. As shown in FIG. 5, the core 14 is formed with a large outer diameter at the long hole 37 portion. Further, the winding core 14 is coupled by the tail shaft 2 and the key 14a so as not to be mutually rotatable and movable in the axial direction. A pair of chucks 20 are disposed in the respective long holes 36 and 37 so as to face each other in the radial direction, and the chucks 20 are held in the long holes so as to be movable outward from the center. Yes. The chuck 20 is urged to the outer peripheral side by a compression spring 39 so that the tapered surface 40 (see FIG. 6) formed on the chuck 20 abuts on the tapered surface 41 (see FIG. 5) of the tapered sleeve 30. It has become. Further, a chuck guide member 42 fixed to the tail shaft 2 is disposed at a position corresponding to the right end portion of the chuck 20 in FIG. 5, and the chuck 20 is guided by the guide member 42 and moves in the chuck opening / closing direction. It is like that. Further, a plurality of intermediate guide holding grooves 43 (see FIG. 6) are formed on the inner peripheral side of the front end portion of the chuck 20 facing each other, and the intermediate guide described later can be held by the grooves 43. ing.

  The operation of the tail shaft 2 having the above configuration will be described. When the cylinder 8 is driven, the tail shaft side guide frame 4 is separated from and connected to the right main frame 100R via the two connecting shafts 5. The tail shaft 2, the guide distance setting motor 16, and the right feed motor 18 also move together with the movement of the tail shaft side guide frame 4. For this reason, if the protrusion distance of the distance setting stopper 17 is set by the guide distance setting motor 16, the movement distance of the tail shaft side guide frame 4 when the cylinder 8 is operated, that is, the axial direction of the tail shaft 2 is set. The moving distance can be set. Further, by actuating the winding core moving cylinder 11, the winding core 14 advances and retreats in the axial direction via a spring 13 disposed in the absorption mechanism 12. At this time, the contact state between the core 14 and the main shaft 1 guide (described later) is adjusted by the action of the spring 13 in the absorption mechanism 12.

  When the right feed motor 18 is driven, the screw shaft 19 of the right feed motor 18 also rotates, and the right frame 3 screwed with the screw shaft 19 moves in the axial direction on the tail shaft 2. By moving the right frame 3, the right chuck opening / closing cylinder 32, the right chuck opening / closing device 33, and the locking member 34 fixed to the right frame 3 also move together, and are further locked to the locking member 34. The tapered sleeve 30 that is in contact with the tapered sleeve 40 and the tapered surfaces 40 and 41 also moves in the axial direction. With this configuration, the chuck 20 can be moved back and forth in the axial direction by driving the right feed motor 18. Further, when the right chuck opening / closing cylinder 32 is operated, the tapered sleeve 30 moves in the axial direction via the locking member 34 of the right chuck opening / closing device 33. By the movement of the tapered sleeve 30 in the axial direction, the chuck 20 can move forward and backward from the center of the tail shaft 2 by the action of the tapered surface 41 of the tapered sleeve 30 and the compression spring 39. . That is, when the right chuck opening / closing cylinder 32 is operated and the tapered sleeve 30 is moved to the right in the drawing via the locking member 34 of the right chuck opening / closing device 33, the chuck 20 is compressed with the tapered surface 41 of the tapered sleeve 30 and the compression. The spring 39 is opened by the urging force to maintain a preparatory stage for holding an intermediate guide (described later). On the other hand, when the tapered sleeve 30 is moved to the left in the drawing via the locking member 34 of the right chuck opening / closing device 33 (the state shown in FIG. 6), the chuck 20 has the tapered surface 41 of the tapered sleeve 30 and It moves in the closing direction against the urging force of the compression spring 39, and the intermediate guide described later can be held by this movement.

Next, the configuration related to the left main frame 100L will be described with reference to FIG. 1, FIG. 4, FIG. 7, FIG.
A left feed motor 45 is fixed to the left main frame 100L as shown in FIG. 1, and the left frame 6 is screwed onto a feed screw shaft 46 coupled to the output shaft of the left feed motor 45 via a nut member. Match. For this reason, when the left feed motor 45 is driven, the left frame 6 can be separated from and connected to the left main frame 100L. Further, a wire supply means 47 for supplying a wire is attached to the upper side of the left main frame 100L in the figure, and the wire 48 can be supplied toward the core 14 by the wire supply means 47. The wire supply means 47 is configured to be movable in the X, Y, and Z directions, employs a conventionally known structure, and is not a feature of the present invention, and therefore will not be described in further detail.

About the main shaft 1 that is axially supported by the left main frame 100L, a plan cross-sectional view, a front cross-sectional view, and an enlarged cross-sectional view of FIG. 7 (part C in FIG. The configuration will be described with reference to FIG.
In FIG. 4, the left main frame 100 </ b> L holds the main shaft 1 rotatably via a bearing 51.
A pulley 52 is fixed to the left end of the main shaft 1, and the pulley 52 outputs the output of the drive motor 25 described above via the belt 53 as shown in FIGS. 4 (a) and 2 (plan view). The main shaft 1 is coupled to a pulley 54 provided on the shaft so that when the drive motor 25 is driven, the main shaft 1 rotates. A conical main shaft guide 1 a is formed at the right end of the main shaft 1. In FIG. 7, a sleeve 55 is slidably fitted to the outer periphery of the main shaft 1, and the aforementioned left frame 6 is coupled to the outer periphery of the sleeve 55 via a bearing 56. For this reason, when the left frame 6 moves in the axial direction, the sleeve 55 can also move integrally on the main shaft 1 in the axial direction.

  As with the tail shaft 2, a tapered sleeve 57 is attached to the outer periphery of the sleeve 55 with a key so that the sleeve 55 cannot rotate and can move in the axial direction. A spring 58 is disposed between the tapered sleeve 57 and the sleeve 55, and the tapered sleeve 57 is always urged rightward in the drawing by the spring 58. A left chuck opening / closing cylinder 59 (see FIG. 4B) on the main shaft 1 side is fixed to the left frame 6, and a left chuck opening / closing device 60 is attached to the cylinder 59. The left chuck opening / closing device 60 includes a locking member 61, and the locking member 61 is fitted in a groove 62 formed on the outer periphery of the tapered sleeve 57.

  A long hole (not shown) is formed in the diameter direction in the main shaft 1 as in the tail shaft 2 side, and a pair of chucks 63 are arranged in the long hole so as to face each other in the radial direction. 63 is held movably from the center toward the outside in the long hole. The chuck 63 is urged toward the outer peripheral side by a compression spring 67, and a tapered surface 64 formed on the chuck 63 comes into contact with the tapered surface 65 of the tapered sleeve 57. A plurality of intermediate guide holding grooves 66 are formed on the inner peripheral side of the chuck 63, and the intermediate guides described later can be held by the grooves 66. The left chuck opening / closing mechanism on the main shaft 1 side adopts the same mechanism as the right chuck opening / closing mechanism on the tail shaft 2 side, and a detailed description thereof will be omitted here.

Next, the wire holding clamp attached to the tip of the main shaft 1 guide of the main shaft 1 will be described with reference to FIGS.
A wire rod holding clamp 70 is provided at the tip of the main shaft 1. The wire rod holding clamp 70 includes a holding member 71 that is movable in the axial direction on the main shaft 1, a spring 72 that biases the holding member 71 rightward in the drawing, and two engaging members that engage with the holding member 71. 73, a Japanese operating member 74 that supports the engaging member 73, and a wire clamp cylinder 75 (see FIG. 4 (a)) connected to the operating member 74. The holding member 71 is formed with a flange 71 a for holding a wire, and a fixing member 76 is disposed on the main shaft side so as to face the holding member 71. When the wire clamp cylinder 74 is actuated, the wire clamping portion between the flange 71a and the fixing member 76 is opened as shown in FIG. 9, and then the wire is placed and then the wire clamp cylinder 75 is opened to hold the state shown in FIG. The wire can be held between the member 71 and the fixing member 76 by the action of the spring 72. That is, the wire clamp cylinder 75 is operated, the holding member 71 is moved to the left in the figure against the urging force of the spring 72, the wire holding clamp 70 is opened, and the entangled portion of the holding member 71 is moved from the nozzle that feeds the wire. When the wire is clamped to the wire holding portion in the wire holding clamp and the wire clamp cylinder 75 is opened in this state, the wire can be held on the core 14 by the spring 72. When the wire is wound, the wire can be cut with a wire cutter pin. The detailed configuration of the wire rod holding clamp 70 is not a feature of the present invention, and various conventionally known means can be employed instead of the above example, and further description is omitted.

With the above configuration, when the left frame 6 screwed to the screw shaft 46 is moved in the axial direction on the main shaft 1 by driving the left feed motor 45, the left chuck opening / closing cylinder 59 fixed to the left frame 6. The chuck opening / closing device 60 and the locking member 61 also move together, and the tapered sleeve 57 that is locked to the locking member 61, and the chuck 63 that is in contact with the tapered sleeve and the tapered surfaces 64 and 65. Also move in the axial direction. Thus, by driving the left feed motor 45, the chuck 63 can be advanced and retracted in the axial direction.
When the left chuck opening / closing cylinder 59 is actuated, the tapered sleeve 57 moves in the axial direction via the locking member 61 of the left chuck opening / closing device 60. Due to the movement of the tapered sleeve 57 in the axial direction, the chuck 63 can advance and retract from the center of the main shaft 1 outward (centrifugal direction) by the action of the tapered surface 65 of the tapered sleeve 57 and the compression spring 67. That is, in FIG. 4B, when the left chuck opening / closing cylinder 59 is operated and the tapered sleeve 57 is moved to the left in the drawing via the locking member 61 of the left chuck opening / closing device 60, the chuck 63 becomes a tapered sleeve. It opens by the action of the tapered surface 65 and the compression spring 67 and maintains the preparatory stage for holding the intermediate guide. On the contrary, when the tapered sleeve 57 is moved rightward in the drawing via the locking member 61 of the left chuck opening / closing device 60, the chuck 63 is attached to the compression spring 67 by the action of the tapered surface 65 of the tapered sleeve. It moves in the closing direction against the force, and the intermediate guide described later can be held by this movement.

Next, the configuration of the external chuck 80 for holding the intermediate guide (described later) will be described with reference to FIG. 2 (plan view) and FIG. 3 (A arrow view).
The external chuck 80 is appropriately supported by the base member by support means, and the main shaft guide 1a and the tail shaft guide 2a are disposed corresponding to the opposed portions as shown in FIGS. 2 and 3 show two external chucks 80, one of the external chucks can be omitted. 2 and 3 have the same configuration, the configuration and operation of one external chuck will be described.

  In FIG. 3, the external chuck 80 includes an opposing holding chuck 81 for holding the intermediate guide. The holding chuck 81 is connected to a holding chuck opening / closing cylinder 82, and the holding chuck 81 can be opened / closed by operating the holding chuck opening / closing cylinder 82. Further, a fork-like spacer 83 is disposed between the holding chucks 81, and by operating the spacer cylinder 84, the fork-like spacer 83 can be moved back and forth in the direction of the core 14 between the holding chucks. Further, the holding chuck 81 and the fork-shaped spacer 83 are integrated by the operation of the chuck moving cylinder 85 so that the main shaft guide 1a and the tail shaft guide 2a can move forward and backward. Further, the holding chuck opening / closing cylinder 82, the spacer cylinder 84, and the chuck moving cylinder 85 are configured to automatically operate in a coil winding process in response to a command from a control device (computer or the like) (not shown).

Next, the configuration of the intermediate guide will be described.
As shown in FIG. 10, the intermediate guide 90 has a shape in which both sides of the central portion protrude in a conical shape 91, a flange 92 protrudes on the outer periphery, and a hole 93 through which the core 14 passes is formed in the central portion. Has been. The overall shape is very similar to an abacus ball. The intermediate guide 90 can be held by the holding chuck 81 of the external chuck 80 described above, and an appropriate number of intermediate guides 90 can be held between the main shaft guide 1a and the tail shaft guide 2a. Note that the number of coils to be manufactured can be determined by the number of intermediate guides 90.

A coil manufacturing process by the coil winding machine having the above configuration will be described. In FIG. 1, the guide distance setting motor 16 is driven to determine the projection amount of the distance setting stopper 17 in order to set the distance between the main shaft 1 guide and the tail shaft 2 guide.
The wire from the wire supply means is held by the holding member 71 and the fixing member 76 by operating the wire clamp cylinder 75.
When the cylinder 8 is driven, the tail shaft side guide frame 4 moves with respect to the right main frame 100R via the two connecting shafts 5. At this time, the guide distance setting motor 16 protrudes the distance setting stopper 17. By setting the amount, only by operating the cylinder 8, the movement distance of the tail shaft side guide frame 4, that is, the movement distance of the tail shaft 2 in the axial direction, specifically, the tail shaft guide and the main shaft Gait spacing is set.
Next, the winding process after the interval between the tail shaft guide and the main shaft guide is set will be described with reference to FIG.
0 The holding chuck opening / closing cylinder 82 of the external chuck 80 is operated and the holding chuck 81 holds the appropriate number of intermediate guides 90 (three intermediate guides in FIG. 11). When two external chucks 80 are arranged as shown in FIG. 3, each holds an appropriate number of intermediate guides.

  Next, the holding chuck opening / closing cylinder 82 of the external chuck 80 is actuated so that the holding chuck 81 is advanced to a portion where the main shaft guide 1a and the tail shaft guide 2a face each other as shown in FIG. It arrange | positions so that it may come between the main axis | shaft guide 1a and the tail axis | shaft guide 2a. At this time, the intermediate guide 90 is set so that the hole 93 formed in the intermediate guide 90 and the axes of the main shaft guide 1a and the tail shaft guide 2a are on the same axis.

Next, the core moving cylinder 11 is operated to advance the core 14 toward the main shaft guide 1a (FIG. 11B). The core 14 advances through the hole 93 of the intermediate guide 90 until it comes into contact with the spindle guide 1a. In this state, the intermediate guide 90 is supported by the winding core 14. In this state, the tip of the winding core 14 is in contact with the central portion of the spindle guide 1a with an appropriate pressing force by the action of the spring 13 disposed in the absorption mechanism 12.
The holding chuck 81 holding the intermediate guide 90 is retracted, and in this state, the spacer cylinder 84 is operated to dispose the fork-shaped spacer 83 between the intermediate guides 90, thereby positioning the interval between the intermediate guides 90.

  Next, the right chuck opening / closing cylinder 32 provided on the right frame 3 is operated to open the tail shaft side chuck 20. As shown in FIG. 11 (c), the winding of the coil is usually started from the main shaft side. In this state (that is, with the chuck opened), the right feed motor 18 is operated to move the right frame 3 in the main shaft direction. Move to. As the right frame 3 moves, the tail shaft side chuck 20 integrated with the right frame 3 advances toward the intermediate guide 90. Then, the groove of the chuck 20 is positioned together with the flange 92 of the intermediate guide 90 (see FIGS. 11C and 12). The operation of holding the intermediate guide 90 when changing the coil winding position is performed by operating the left feed motor 45 and the right feed motor 18 to hold the main shaft side chuck 66 and the tail shaft side chuck 20 respectively. Advancing together with the intermediate guide 90 to be performed.

The right chuck opening / closing cylinder 32 is operated to hold the intermediate guide 90 by the chuck 20 on the tail shaft side (see FIG. 13). As shown in FIG. 11 (d), a winding core 14 is formed between the intermediate guide 90 and the main shaft guide 1a, and the wire is positioned in this portion to perform the first coil winding. .
When the first coil winding is completed, the right chuck opening / closing cylinder 32 is operated to open the tail shaft side chuck 20, and the spacer cylinder 84 of the external chuck 80 is operated to place the fork spacer 83 between the intermediate guide 90. The intermediate guide 90 is positioned by positioning (FIG. 11E). With the intermediate guide 90 positioned, the left and right chuck opening and closing cylinders 56 and 32 on the main shaft 1 side and tail shaft 2 side are operated to open the chuck 63 on the main shaft 1 side and the chuck 20 on the tail shaft 2 side, and then The feed motors 45 and 18 are actuated to advance the left frame 6 toward the tail shaft 2, and the right frame 3 is retracted toward the tail shaft 2 to set the next coil winding portion. Then, the grooves 66 and 43 of both chucks 63 and 20 are positioned together with the flange 92 of the intermediate guide 90. The left and right chuck opening / closing cylinders 56 and 32 on the main shaft 1 side and the tail shaft 2 side are operated to hold the corresponding intermediate guide 90 by the chucks 63 and 20 (FIG. 11 (f)).

  A wire is wound around the core 14 at the coil winding position positioned by the intermediate guide 90. The winding operation as described above is repeated a plurality of times to complete the winding of the coil group including a plurality of sets. After the winding of the series of coil groups is completed, the fork-like spacer 83 is disposed between the intermediate guides 90 (FIG. 11G), and then the intermediate guide 90 is held by the holding chuck 81 of the external chuck 80 (FIG. 11 (h)). With the intermediate guide 90 held by the holding chuck 81, the core moving cylinder 11 is driven to store the core 14 in the tail shaft 2. Next, the holding chuck 81 is retracted while holding the intermediate guide 90. In this state, the coil is positioned by the fork-shaped spacer (FIG. 11 (i)). Next, in a state where the external chuck is retracted and the intermediate guide 90 is retracted, a plurality of continuous air core coils are formed without cutting the connecting wire between the coils (FIG. 11 (j)). When the coil thus formed is cut by a wire cutter pin provided on the main shaft side, a plurality of air core coils are completed.

The state of the coil produced by the above manufacturing process is shown in FIG.
By the way, even if it is a plurality of air core coils, there are cases where a plurality of reversely wound coils are provided as shown in FIG. A coil manufacturing method in this case will be described. In the case of such a coil, two external chucks are used as shown in FIG. In the case shown in FIG. 15, the fork-shaped spacer is provided with spacers only on both sides, and two intermediate guides 90 are held by one holding chuck of one external chuck. The two intermediate guides 90 that are skipped by one are held by the holding chuck of the other external chuck. When the coil has been wound by the same process as described above, each external chuck holds the corresponding intermediate guide 90 and retracts so that a plurality of continuous coils each having a reverse coil without entangled with the external chuck. Individual air-core coils can be manufactured.

In the above embodiment, the cylinder and motor are used for the chuck advance / retreat mechanism, chuck opening / closing mechanism, intermediate guide 90 holding mechanism, etc., but other actuators (linear motor, screw shaft mechanism, etc.) are used. You can also Further, the moving mechanism in the axial direction of the left frame and the right frame is not limited to the above-described example, and various currently known moving mechanisms can be used. In addition, various assembling methods can be adopted for the assembling of the members as long as the assembling mechanism does not hinder the operation. Timing control such as holding of the intermediate guide, opening / closing of the chuck, and advance / retreat can be performed using a computer or the like.
The wire described in the embodiment is not limited to a round copper wire, and can be applied to various forms of wire. In addition, the present invention can be implemented in various other forms without departing from the spirit or main features thereof. Moreover, the above-mentioned Example is only an illustration in all the points, and must not be interpreted limitedly.

  The present invention is used for manufacturing a coil in which a plurality (for example, four) are used as a set, such as a tracking coil used in an optical pickup for reading an electrical signal of an optical information recording disk. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall schematic configuration diagram of a front surface of a coil winding machine according to an embodiment capable of simultaneously manufacturing a plurality of continuous coils. It is a top view of the coil winding machine. It is a figure of the AA arrow direction in FIG. 1, and is a figure which abbreviate | omitted the main axis | shaft 1 guide. (A) Plan sectional view of the main shaft and tail shaft, (B) is a front sectional view of the same. It is the A section enlarged view in FIG. It is the B section enlarged view in Drawing 4 (b). It is the C section enlarged view in FIG.4 (b). It is a detailed block diagram of the wire holding clamp provided in the main shaft. It is a block diagram of the state in which the wire clamp part was opened in FIG. It is a block diagram of an intermediate guide. It is a winding process figure which winds a wire. It is state explanatory drawing of the chuck | zipper before intermediate | middle guide holding | grip. It is state explanatory drawing of the chuck | zipper after intermediate | middle guide holding | grip. It is explanatory drawing of a winding state, and the enlarged view of the wound coil. It is explanatory drawing of the winding state of a reverse state, and the enlarged view of the wound coil.

Explanation of symbols

100L Left main frame 100R Right main frame 1 Main shaft 1a Main shaft guide 2 Tail shaft 2a Tail shaft guide 3 Right frame 4 Tail shaft side guide frame 5 Connection shaft 6 Left frame 7 Connection material 8 Cylinder 9 Output shaft 10 Support member 11 Core movement Cylinder 12 absorption mechanism 13 spring 14 core 14a key 15 bearing 16 guide distance setting motor 17 distance setting stopper 18 right feed motor 19 screw shaft 20 chuck on the tail shaft side pulley 22 belt 23 pulley 24 spline shaft 25 drive motor 26 sleeve 27 Key 28 Bearing 29 Key 30 Tapered sleeve 31 Spring 32 Right chuck opening / closing cylinder 33 Right chuck opening / closing device 34 Locking member 35 Groove 36, 37 Long hole 39 Compression spring 40, 41 Tapered surface 42 Guide member 43 Groove 4 Left feed motor 46 Left frame 47 Wire supply means 48 Wire 51 Bearing 52 Pulley 53 Belt 54 Pulley 55 Sleeve 56 Bearing 57 Tapered sleeve 58 Spring 59 Left chuck opening / closing cylinder 60 Left chuck opening / closing device 61 Locking member 62 Groove 63 Main shaft side Chuck 64, 65 Tapered surface 66 Groove 70 Wire holding clamp 71 Holding member 72 Spring 73 Engaging member 74 Actuating member 75 Wire clamp cylinder 76 Fixing member 80 External chuck 81 Holding chuck 82 Holding chuck opening / closing cylinder 83 Fork spacer 84 Spacer cylinder 85 Chuck moving cylinder 90 Intermediate guide 91 Conical portion 92 Flange 93 Hole

Claims (8)

A coil winding method for forming a plurality of coils using a single continuous wire, wherein a plurality of intermediate guides are held by an external chuck between a tail shaft guide and a main shaft guide, and then held by an external chuck. After supporting the intermediate guide by penetrating the winding core from one side of the tail shaft guide or the main shaft guide to the other side in the through hole formed in the guide, the external chuck holding the intermediate guide is retracted, and then The intermediate guide on the winding core is positioned by the tail shaft side chuck provided on the tail shaft and the main shaft side chuck provided on the main shaft, and the wire is wound around the core at the first coil winding position positioned by the intermediate guide. After that, the intermediate guide is positioned again by the chuck on the tail shaft side and the chuck on the main shaft side to determine the next coil winding position. Coil winding method and winding the wire in the positioned core winding position, the winding of the coil group including a plurality of sets by repeating multiple times the winding operations as described above. A coil winding method for forming a plurality of coils by using a single continuous wire, which comprises the following steps (a) to (k).
(A) A step of holding a plurality of intermediate guides by an external chuck between the tail shaft guide and the main shaft guide.
(B) A step of supporting the intermediate guide by penetrating the winding core from one side of the tail shaft guide or the main shaft guide to the other side in a through hole formed in the shaft center portion of the intermediate guide held by the external chuck.
(C) A step of retracting the external chuck holding the intermediate guide.
(D) A step of positioning an intermediate guide on the winding core by a tail shaft side chuck provided on the tail shaft to determine an initial coil winding position.
(E) A step of winding a wire around a core of a coil winding position positioned by the intermediate guide.
(F) A step of determining the next coil winding position by positioning the intermediate guide again by the tail shaft side chuck and the main shaft side chuck provided on the main shaft after the end of the winding.
(G) A step of winding a wire around a core whose next coil winding position is positioned by the intermediate guide.
(H) A step of winding a coil group consisting of a plurality of sets by repeating the winding operation as described above a plurality of times.
(I) A step of holding the intermediate guide by an external chuck after the winding of the coil group is completed.
(J) A step of storing the winding core in one of the tail shaft and the main shaft while the intermediate guide is held by the external chuck.
(K) A step of retracting the external chuck while the intermediate guide is held by the external chuck, and retracting the intermediate guide from the winding.
(L) A step of taking out a plurality of air core coils in a state where the intermediate guide is retracted without cutting the connecting wire between the coils.   3. When holding the intermediate guide by the external chuck, a fork-like spacer is inserted between the intermediate guides and at the end of the intermediate guide so that the interval between the intermediate guides can be automatically adjusted. The coil winding method described in 1. The external chuck is composed of two opposed chucks, each of the external chucks is configured to be able to hold the corresponding intermediate guide from the opposite side, and between the intermediate guides held by the respective chucks. Coils wound in opposite directions are formed on the winding core, and after the coil winding is completed, the external chuck is retracted in the opposite direction, and the coils in which the winding direction of the wire is reversed are wound between the coils. The coil winding method according to any one of claims 1 to 3, wherein winding of a plurality of air-core coils formed without cutting the crossover wire is performed. A coil winding apparatus used in the coil winding method according to any one of claims 1 to 4, wherein the apparatus is
A tail shaft that is rotatably held by one main frame of the pair of main frames erected on the base member and is rotated by a driving device;
A main shaft that is rotatable on the other main frame, is held opposite to the tail shaft, and is rotated in synchronization with the tail shaft by a driving device;
A winding core that is housed in either the tail shaft or the main shaft so as to freely advance and retract;
A plurality of intermediate guides disposed between the tail shaft guide and the main shaft guide and having a through hole in the winding core, and a tail shaft side chuck that is provided in the tail shaft and the main shaft and holds and releases the intermediate guide And the chuck on the spindle side,
An external chuck composed of a freely movable holding chuck for holding the intermediate guide, and a freely movable fork-like spacer for positioning the intermediate guide;
And
A plurality of coils are wound around the core provided through the plurality of intermediate guides disposed between the tail shaft guide and the main shaft guide without cutting the connecting wires between the coils. A coil winding machine characterized in that the plurality of coils can be taken out after winding. A coil winding apparatus used in the coil winding method according to any one of claims 1 to 4, wherein the apparatus is
A tail shaft that is rotatably held by one main frame of the pair of main frames erected on the base member and is rotated by a driving device;
A tail shaft guide frame for controlling the amount of advance and retreat of the tail shaft in the axial direction;
A main shaft that is rotatable on the other main frame, is held opposite to the tail shaft, and is rotated in synchronization with the tail shaft by a driving device;
A winding core that is housed in either the tail shaft or the main shaft so as to freely advance and retract;
A plurality of intermediate guides disposed between the tail shaft side guide and the main shaft side guide and having a through-hole of the winding core, and provided in the tail shaft and the main shaft, are capable of moving forward and backward to hold and release the intermediate guide. A tail shaft side chuck and a main shaft side chuck;
An external chuck composed of a freely movable holding chuck for holding the intermediate guide, and a freely movable fork-like spacer for positioning the intermediate guide;
And
A plurality of coils are wound around the core provided through the plurality of intermediate guides disposed between the tail shaft guide and the main shaft guide without cutting the connecting wires between the coils. A coil winding machine characterized in that the plurality of coils can be taken out after winding.   7. The coil winding machine according to claim 6, wherein the tail shaft side chuck and the main shaft side chuck are configured to be movable forward and backward in the axial direction and openable and closable in the centrifugal direction. The coil winding machine according to any one of claims 5 to 7, wherein the external chuck is configured as two external chucks facing each other.

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