JP2004149233A - Winding method and winding device for band body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding method and a winding device for a band body capable of increasing quality and yield. <P>SOLUTION: This winding method for a toroidal core 18 formed by winding a magnetic band sheet 15 comprises the steps of forming a core 17 in a cylindrical shape having a locking recess 17b opening to the outer peripheral surface thereof, inserting a locking bar 16 into the locking recess 17b to lock the tip part of the magnetic band sheet 15, rotating the core 17 and the locking bar 16 in synchronism with each other to wind the magnetic band sheet 15 on the core 17, and after moving the locking bar 16 to the core 17 to relieve the tip part of the magnetic band sheet 15, extracting the locking bar 16 and the core 17 from the toroidal core 18. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement in a winding method and a winding device for winding a band around a core.
[0002]
[Prior art]
For example, a toroidal coil used as an inductor of a power line filter or the like includes a ring-shaped toroidal core and a conductor wound around the toroidal core via an insulating material.
[0003]
Conventionally, for example, there is a toroidal core shown in FIG. 11 which constitutes this type of toroidal coil. The toroidal core 18 is formed in a ring shape by winding a tape-shaped magnetic strip 15 in a dozen times (see Patent Document 1).
[0004]
FIGS. 12A, 12B, and 12C show a conventional winding method for forming the toroidal core 18. FIG. In this winding method, first, as shown in FIG. 12A, the tip of the magnetic strip 15 is arranged between semi-cylindrical winding cores 17 provided in pairs, and as shown in FIG. As shown in FIG. 12 (c), the front end of the magnetic strip 15 is sandwiched between the cores 17, and the respective cores 17 are rotated to wind the magnetic strip 15 in tens of turns as shown in FIG. The toroidal core 18 is formed by extracting the core 17 from the turned magnetic strip 15.
[0005]
[Patent Document 1]
JP 2000-16447 A
[Problems to be solved by the invention]
However, in such a conventional band winding method, after winding the magnetic strip 15 around the core 17, each core 17 is expanded to release the end of the magnetic strip 15. Since the core 17 cannot be removed, the core 17 is not smoothly removed from the wound magnetic strip 15. Therefore, there is a problem that the quality and yield of the toroidal core 18 are deteriorated.
[0007]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a winding method and a winding device for a belt body in which quality and yield can be improved.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention, a winding core is formed in a columnar shape having a locking concave portion opened on an outer peripheral surface thereof, and a locking rod is inserted into the locking concave portion to lock a leading end portion of the band, and the winding core and The locking rod is rotated in synchronization with each other to wind the band around the core, and the locking rod is moved relative to the core to release the leading end of the band, and then the locking rod and the core are wound around the band. It is characterized in that it is extracted from the take-out part.
[0009]
A second invention is characterized in that in the first invention, a magnetic strip made of an amorphous metal is used.
[0010]
According to a third aspect of the present invention, there is provided a columnar core having a locking concave portion opened on the outer peripheral surface thereof, a locking rod inserted into the locking concave portion, and the core and the locking rod rotating in synchronization with each other to form a band. A core rotation driving mechanism and a locking rod rotation driving mechanism for winding the band around the core, and while locking the leading end of the band when the band is wound around the core, the winding part of the band is A locking rod moving mechanism for moving the locking rod with respect to the core so as to release the tip of the band when the core is removed from the core.
[0011]
A fourth invention is characterized in that, in the third invention, the locking rod is eccentric with respect to the rotation axis of the locking rod rotation drive mechanism.
[0012]
Function and Effect of the Invention
According to the first and third aspects of the present invention, the locking rod is inserted into the locking recess to lock the leading end of the band, and the core and the locking rod are rotated synchronously with each other to wind the band around the core. I do.
[0013]
After winding the band around the core, the tip of the band is released from the core by moving the locking rod with respect to the core, and the locking rod and the core are wound around the band. It can be pulled out smoothly from the bezel. Thereby, the front end of the band is not damaged, and the elastic restoring force causes it to be curved in an arc shape along the inner periphery of the winding portion of the band to form a ring-shaped member. The yield can be improved.
[0014]
According to the second invention, after the band made of amorphous metal is wound around the core, the locking rod and the core are pulled out from the winding portion of the band, and the band is resiliently restored by the amorphous metal. And a ring-shaped member is formed by being curved in an arc shape along the inner circumference of the winding portion.
[0015]
According to the fourth aspect, since the locking rod is formed thin, the moving distance of the locking rod in the locking recess can be increased, and the locking rod and the core can be smoothly moved from the winding portion of the band. Can be extracted.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0017]
In FIG. 8, reference numeral 18 denotes a toroidal core (ring-shaped member). The toroidal core 18 forms a closed magnetic circuit of the toroidal coil by winding a conductor (not shown) around the core.
[0018]
The toroidal core 18 is formed by winding the magnetic strip 15 in a dozen times. As the magnetic strip 15, a tape-shaped thin plate made of an amorphous metal is used.
[0019]
In FIG. 1, reference numeral 1 denotes a winding device for automatically winding a toroidal core. Hereinafter, the configuration of the winding device 1 will be described. Here, two axes, X and Y, which are orthogonal to each other, are set, and the description will be made assuming that the X axis extends substantially in the front-rear direction and the Y axis extends in the horizontal direction.
[0020]
The winding device 1 includes four cores 17 for winding the magnetic strip 15, and a core rotation drive mechanism 30 for driving the core 17 to rotate. The number of the cores 17 is not limited to four, and can be arbitrarily increased or decreased according to a required production amount.
[0021]
In the core rotation drive mechanism 30, the rotation of the servomotor 31 is transmitted to the rotation shaft 34 of each core 17 via each pulley 32 and belt 33. Each rotary shaft 34 is supported by the gantry 2 via a bearing base 35 so as to be rotatable around the Y axis.
[0022]
As shown in FIG. 2, the winding core 17 is formed in a columnar shape, and has a locking concave portion 17b which is opened in an outer peripheral surface 17a and concaved in a concave shape. That is, the core 17 is formed in a columnar shape with a horseshoe-shaped cross section. The locking recess 17b has a function of receiving the tip of the magnetic strip 15 inside the locking recess 17b and locking the tip of the magnetic strip 15 via a locking rod 16 inserted into the locking recess 17b.
[0023]
The winding device 1 is provided with four locking rods 16 opposed to the respective winding cores 17, and a locking rod rotation driving mechanism 40 for rotating and driving each locking rod 16, and the locking rod rotation driving mechanism 40 A locking rod moving mechanism 50 that moves in the axial direction and the Y-axis direction.
[0024]
The locking rod 16 is formed in a cylindrical shape, and is formed coaxially with the rotation shaft 44 thereof. As shown in FIG. 3, the locking bar 16 is inserted into the locking recess 17 b of the core 17 via the tip of the magnetic strip 15, so that the tip of the magnetic strip 15 is interposed between the locking recess 17 b and the locking recess 17 b. The part is sandwiched and locked.
[0025]
The rotation of the servo motor 41 is transmitted to the rotation shaft 44 of each locking rod 16 via each pulley 42 and belt 43 in the locking rod rotation drive mechanism 40. Each rotary shaft 44 is supported by the X-axis direction moving table 6 via a bearing table 45 so as to be rotatable around the Y axis.
[0026]
The locking rod moving mechanism 50 includes a Y-axis moving table 5 that moves in the Y-axis direction with respect to the gantry 2, and an X-axis moving table 6 that moves in the X-axis direction with respect to the Y-axis moving table 5. Prepare.
[0027]
The Y-axis direction moving base 5 is supported so as to be able to move in parallel with the gantry 2 in the Y-axis direction via a guide rail 51. A ball screw 53 rotationally driven by a servomotor 52 is attached to the gantry 2, and the Y-axis direction moving base 5 is screwed to the ball screw 53, and moves in parallel in the Y-axis direction with the rotation of the ball screw 53.
[0028]
The X-axis direction movable table 6 is supported by the gantry 2 so as to be able to translate in the X-axis direction via a guide rail 61. A ball screw 63 rotated and driven by the servomotor 62 is attached to the X-axis direction moving base 6. The X-axis direction moving base 6 is screwed to the ball screw 63, and moves in parallel in the X-axis direction with the rotation of the ball screw 63. .
[0029]
The winding device 1 includes a removing tool 19 for removing the toroidal core 18 wound around each of the cores 17 from each of the cores 17 and a removing tool moving mechanism 4 for moving each of the removing tools 19 in the X-axis direction and the Y-axis direction. Prepare.
[0030]
The removal tool 19 is formed in a plate shape having a concave portion through which the rotation shaft 34 of the core 17 is inserted, and is fixed on the moving table 8. When the removal tool 19 abuts on the end surface of the toroidal core 18 wound around the core 17 and moves forward (toward the distal end side of the core 17 in the Y-axis direction), the toroidal core 18 is pushed forward and wound. The core 17 is removed.
[0031]
The removal tool moving mechanism 4 has the same structure as the locking rod rotation driving mechanism 40, and moves the moving table 8 in the X-axis direction and the Y-axis direction by the rotation of the servomotors 12, 13.
[0032]
The winding device 1 includes a controller 10 that controls the operation of each of the servomotors 12, 13, 31, 41, 52, and 62 based on a preset program.
[0033]
The winding device 1 further includes a supply mechanism (not shown) for supplying the magnetic strip 15, a cutter for cutting the magnetic strip 15 in the middle thereof, a welding machine for welding and fixing the end of the cut magnetic strip 15, and the like. Have.
[0034]
Next, an operation in which the winding device 1 winds the magnetic strip 15 to wind the toroidal core 18 will be described.
[0035]
{Circle around (1)} As shown in FIG. 2, the leading end of the magnetic strip 15 supplied from a supply mechanism (not shown) is arranged between the core 17 and the locking rod 16, and the locking rod 16 is indicated by an arrow in FIG. It moves to the left direction shown and is inserted into the locking recess 17b of the core 17. Thereby, as shown in FIG. 3, the front end of the magnetic strip 15 is sandwiched between the locking bar 16 and the locking recess 17b, and locked in a state of being curved in an S-shaped cross section.
[0036]
{Circle around (2)} Subsequently, the core 17 and the locking rod 16 are synchronously rotated in the directions indicated by arrows in FIGS. 4 and 5, and the magnetic strip 15 is wound around the core 17 a predetermined number of times. At this time, the distal end of the magnetic strip 15 is sandwiched between the locking rod 16 and the locking recess 17b, and the locked state is maintained.
[0037]
{Circle over (3)} When the winding of the magnetic strip 15 around the core 17 is completed, the magnetic strip 15 is cut by a cutter (not shown), and as shown in FIG. It is fixed to the winding part of the magnetic strip 15 by welding with a welding machine.
[0038]
(4) Subsequently, the locking bar 16 is moved rightward as indicated by the arrow in FIG. 7, and the leading end of the magnetic strip 15 is sandwiched between the locking bar 16 and the locking recess 17b and locked. Release the state.
[0039]
{Circle around (5)} Subsequently, the locking bar 16 is moved forward to be pulled out from the locking recess 17b. Along with this, the distal end of the magnetic strip 15 that has been curved into an S-shaped cross section is curved in an arc shape along the inner periphery of the toroidal core 18 by its elastic restoring force.
[0040]
{Circle around (6)} Subsequently, the removal tool 19 is moved forward, and the toroidal core 18 is pushed forward to remove it from the core 17.
[0041]
After the magnetic strip 15 is wound around the core 17 as described above, the locking bar 16 is moved relative to the core 17 to release the tip of the magnetic strip 15 with respect to the core 17. The locking rod 16 and the core 17 can be smoothly removed from the toroidal core 18. As a result, the tip of the magnetic strip is bent in an arc shape along the inner periphery of the toroidal core by the elastic restoring force of the amorphous metal without being damaged, so that the quality and yield of the toroidal core are improved. It is.
[0042]
Thus, the toroidal core 18 is formed in a ring shape having a predetermined size as shown in FIG. Thereafter, in another step, the toroidal core 18 is put in a plastic case (not shown), and a conductive wire (not shown) is wound therearound to form a toroidal coil.
[0043]
Next, another embodiment shown in FIGS. 9 and 10 will be described. The same components as those of the above-described embodiment are denoted by the same reference numerals.
[0044]
The locking rod 16 is formed in a columnar shape, and is formed offset with respect to the rotation center O of the rotation shaft 44 of the locking rod rotation drive mechanism 40. The locking rod 16 is inserted into the locking concave portion 17b of the core 17 via the distal end portion of the magnetic band plate 15, so that the distal end portion of the magnetic band plate 15 is sandwiched between the locking concave portion 17b and locked. .
[0045]
In this case, since the locking bar 16 is formed thin by eccentricity of the locking bar 16 with the rotation shaft 44 of the locking bar rotation drive mechanism 40, the moving distance of the locking bar 16 in the locking recess 17b is increased. The locking rod 16 and the core 17 can be smoothly removed from the toroidal core 17. As a result, the toroidal core 17 is formed by being curved in an arc shape along the inner periphery of the toroidal core 17 by its elastic restoring force without damaging the tip end of the magnetic strip 15, so that the quality of the toroidal core 17 is improved. The yield can be improved.
[0046]
The core rotation driving mechanism 30 and the locking rod rotation driving mechanism 40 that rotate the core 17 and the locking rod 16 in synchronization with each other are not limited to the structure including the servo motors 31 and 41 that drive the respective components. However, it is also possible to adopt a configuration in which the servomotor does not include a servomotor and rotates by following the other.
[0047]
In addition, the present invention is not limited to a toroidal core having a magnetic band wound thereon, and can be applied to a band having a resin film wound thereon, for example.
[0048]
It is apparent that the present invention is not limited to the above-described embodiment, and that various changes can be made within the scope of the technical idea.
[Brief description of the drawings]
FIG. 1 is a perspective view of a winding device showing an embodiment of the present invention.
FIG. 2 is a front view showing a step of winding the toroidal core.
FIG. 3 is a front view showing a step of winding the toroidal core.
FIG. 4 is a front view showing a step of winding the toroidal core.
FIG. 5 is a front view showing a step of winding the toroidal core.
FIG. 6 is a front view showing a step of winding the toroidal core.
FIG. 7 is a front view showing a step of winding the toroidal core.
FIG. 8 is a front view showing a completed state of the toroidal core.
FIG. 9 is a front view of a winding device showing another embodiment.
FIG. 10 is a perspective view of the winding device.
FIG. 11 is a cross-sectional view of a toroidal core showing a conventional example.
FIG. 12 is a front view showing a step of winding the toroidal core.
[Explanation of symbols]
DESCRIPTION OF REFERENCE NUMERALS 1 take-up device 4 removal tool moving mechanism 10 controller 15 magnetic strip 17 core 17b locking recess 18 toroidal core 19 removal tool 30 core rotation drive mechanism 40 locking rod rotation drive mechanism 44 rotation shaft 50 locking rod movement mechanism

Claims (4)

The winding core is formed in a columnar shape having a locking concave portion opened on the outer peripheral surface thereof, and a locking rod is inserted into the locking concave portion to lock the leading end of the band body, and the core and the locking rod are synchronized with each other. After rotating, winding the band around the core, moving the locking rod with respect to the core and releasing the leading end of the band, removing the locking rod and the core from the winding portion of the band. Characteristic band winding method. 2. The method according to claim 1, wherein the band made of an amorphous metal is used. A cylindrical core having a locking concave portion opened on its outer peripheral surface, a locking rod inserted into the locking concave portion, and the core and the locking rod are rotated synchronously with each other to wind the band around the core. A core rotation drive mechanism and a locking rod rotation drive mechanism, which lock the leading end of the band when winding the band around the core, and remove the winding portion of the band from the core. An apparatus for winding a band, comprising: a locking rod moving mechanism for moving a locking rod with respect to a core so as to release a leading end of the band. The winding device according to claim 3, wherein the locking rod is eccentric with respect to a rotation axis of the locking rod rotation driving mechanism.

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