JP3857088B2 - Taping method and apparatus for coil winding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a taping method and a taping device provided in a coil winding machine.
[0002]
[Prior art]
For example, a coil used in a transformer is subjected to processing such as taping as an insulating layer between a primary winding and a secondary winding, and this taping is automatically performed using a coil winding machine.
[0003]
[Problems to be solved by the invention]
However, in the case where taping is automatically performed using such a conventional coil winding machine, there is a problem that it is difficult to apply a constant tape tension when the tape is wound around the coil. .
[0004]
Further, as shown in FIGS. 10A to 10D, the taping device for attaching a tape to a conventional coil has a taper roller (tape presser) 202 attached to the tape 7 after the tape 7 is cut by the cutter 201. The tape 7 is affixed to the coil 3 by being rotated while being pressed against the coil 3 through the coil 3. For this reason, when the tape 7 is cut by the cutter 7, the tape 7 tends to be lifted from the coil 3, and the tape 7 is not reliably attached.
[0005]
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a taping method and apparatus for a coil winding machine that applies a tape tension substantially constant.
[0006]
[Means for Solving the Problems]
1st invention is applied to the taping method of the coil winding machine which supplies the tape wound around a coil.
[0007]
Then, forced an air tensioner pulley that applies tension to the tape, and the tape supply stopping means for stopping the supply of the tape towards the air tensioner pulley from the tape supply, the rod rod is expanded by air pressure which is sealed in the cylinder The air tensioner driving means that automatically stretches the tape, pulls the tape from the tape supply source to forcibly stretch the rod , and stops supplying the tape from the tape supply source to the air tensioner pulley. The tape winding step of contracting the rod against the air pressure sealed in the cylinder is alternately performed.
[0008]
The second invention is applied to a taping device of a coil winding machine that supplies a tape wound around a coil.
[0009]
Then, forced an air tensioner pulley that applies tension to the tape, and the tape supply stopping means for stopping the supply of the tape towards the air tensioner pulley from the tape supply, the rod rod is expanded by air pressure which is sealed in the cylinder The air tensioner drive means that stretches automatically, the tape drawer that forcibly stretches the rod by supplying tape from the tape supply source, and the tape supply from the tape supply source to the air tensioner pulley is stopped to cylinder the rod And a control means for alternately winding the tape to contract against the air pressure sealed in the air.
[0010]
3rd invention is applied to the taping apparatus of the coil winding machine which affixes a tape on a coil.
[0011]
And a cutter that cuts the tape extending to the coil and a tape press that faces the coil through the tape when the tape is cut, and is rotated while pressing the tape press against the coil through the tape after cutting the tape. The tape is attached to the coil.
[0012]
Operation and effect of the invention
According to the first and second inventions, the air tensioner is forcibly extended to pull out the tape every time the winding of the tape is finished, and the tape supply from the tape supply source is stopped when the tape is wound to stop the air tensioner. Therefore, the tape can be wound around the coil in a state in which the tension of the tape is applied substantially constant by the air pressure of the air tensioner.
[0013]
According to the third invention, since the tape presser faces the coil through the tape from the time of cutting the tape, the end of the tape can be securely attached without being lifted from the coil.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0015]
In FIG. 1, reference numeral 1 denotes a batch transfer winding machine that automatically manufactures a coil used in a transformer or the like. Here, it is assumed that three axes X, Y, and Z that are orthogonal to each other are set, the X axis extends in the horizontal front-rear direction, the Y axis extends in the horizontal horizontal direction, and the Z axis extends in the vertical direction.
[0016]
The batch transfer winding machine 1 includes four spindles 11 that rotate a bobbin (core) of a coil, and a spindle that moves the spindle transfer table 21 in parallel in the Y-axis direction via two rails 22 with respect to the frame 2. A bobbin insertion in which the bobbin is automatically transferred to each spindle 11 through the jig 92 by the movement of each spindle 11 by the transfer mechanism 20, the spindle moving mechanism 10 that moves the spindle 11 with respect to the spindle transfer table 21. The discharge unit 91, the first winding unit 41 and the second winding unit 42 that form a coil by supplying a wire to the bobbin, and the first winding unit 41 and the second winding unit 42 with respect to the gantry 2 The winding unit moving mechanism 40 that moves respectively, the taping unit (taping device) 71 that taps the coil, and the mount 2 And it includes a processing unit moving mechanism 70 for moving the taping unit 71, and a controller 4 for controlling the operation of such servomotors constituting the respective mechanisms 20, 40, and 70 in.
[0017]
The winding unit moving mechanism 40 moves the winding unit 41 with respect to the gantry 2 in the three-axis directions of X, Y, and Z. The winding unit moving mechanism 40 has a left / right moving base 73 that moves in the Y-axis direction with respect to the gantry 2 via a servo motor 72 and the like, and a left / right moving base 73 in the X-axis direction through a servo motor 74 and the like A back-and-forth moving base 75 that moves, and a lifting and lowering base 77 that moves in the Z-axis direction via a servo motor 76 with respect to the front-and-back moving base 75 are provided.
[0018]
The batch transfer winding machine 1 moves between the units 41, 71, and 42 while the bobbin is mounted on the spindle 11, and the winding work and taping work are sequentially performed. There is no work to deliver bobbins, reducing the cause of work instability and improving product yield.
[0019]
Next, the taping unit 71 that taps the coil will be described. In FIG. 1, for convenience, one having four tapes 7 is shown, but in the present embodiment, one having six tapes 7 will be described with reference to FIGS. 2 and 3.
[0020]
The taping unit 71 includes a tape clamp 130 that grips the leading end of the tape 7 with respect to the moving base 82, a second chuck 150 that grips the middle of the tape 7 with respect to the tape mount 101, and a cutter 160 that cuts the tape 7. And 6 each. Each tape 7 is guided by each pulley 176 and extends to each second chuck 150. The second chuck 150 is driven to open and close by an air cylinder 151.
[0021]
Each tape clamp 130 is supported by a moving table 82, and the moving table 82 moves in three axial directions of X, Y, and Z via a moving mechanism 83.
[0022]
The taping unit 71 includes a cutter 160 that appears and cuts in a path extending to the coil 3 and cuts the tape 7, and a tape press 162 that faces the coil 3 through the tape 7 when the tape 7 is cut. After cutting 7, the tape press 162 is pressed against the coil 3 through the tape 7, and the coil 3 is rotated to attach the tape 7 to the coil 3.
[0023]
In the present embodiment, the cutter 160 protrudes from the gap between the tape presser 161 and the tape presser 162 so as to be able to project and retract, and cuts the middle of the tape 7 extending from the tape presser 161 to the tape presser 162.
[0024]
The six cutters 160 are attached to the lifting platform 163 so as to move up and down all at once. The lifting platform 163 is supported by the tape mount 101 via a rail 164 so as to be movable up and down in the Z-axis direction. The lifting platform 163 is driven by a pair of air cylinders 166 to descend against the spring 165.
[0025]
In the taping unit 71, taping is performed by winding the tape 7 around the coil 3 in the following procedure.
(1) With the tip of the tape 7 supplied through the pulley 176 held by the tape clamp 130, the spindle 11 is moved and the tape 7 is attached to the coil 3.
(2) The spindle 11 is rotated, and the tape 7 is attached to the outer periphery of the coil 3 over the entire circumference. At this time, the end surface 131 of the clamp 130 is pressed against the tape 7.
(3) As shown in FIG. 9A, the spindle 11 is moved in the Y-axis direction to extend the tape 7 from the tape press 161 to the tape press 162. At this time, the tape presser 162 is opposed to the coil 3 via the tape 7.
(4) As shown in FIG. 9B, the second chuck 150 is closed and the tape 7 is gripped in the middle. Subsequently, the cutter 160 is protruded from the gap between the tape pressers 161 and 162, and the tape 7 is cut. Also at this time, since the tape presser 162 faces the coil 3 through the tape 7, the end 7 a of the tape 7 cut by the tape presser 162 is prevented from being lifted from the outer periphery of the coil 3.
(5) The spindle 11 is rotated while pressing the tape 7 wound around the coil 3 on the tape presser 162, and the tape 7 is attached to the coil 3.
[0026]
Thus, since the tape presser 162 is opposed to the coil 3 through the tape 7 from the time of cutting the tape 7, the end 7a of the tape 7 is securely attached to the coil 3 without being lifted.
[0027]
As shown in FIG. 4, a taping device 100 for supplying the tape 7 attached to the coil 3 is provided on the tape mount 101. The taping device 100 includes a tape reel 110 around which a tape 7 provided as a tape supply source is wound, a first chuck 140 that grips the middle of the tape 7 as a tape supply stop unit, and an air that applies tension to the tape 7 by air pressure. Six tensioners 120 are provided, and an air cylinder 127 (see FIG. 6) for forcibly expanding the air tensioner 120 by air pressure is provided. The tape 7 fed out from each tape reel 110 is guided by pulleys 171 to 175 and extends to the pulley 176.
[0028]
As shown in FIG. 4, the air tensioner pulley 173 is connected to the tip of the rod 121 of the air tensioner 120 via a slider 122, and the slider 122 is supported via a rail 123 so as to be movable in the X-axis direction.
[0029]
In the air tensioner 120, the rod 121 is urged in the extending direction by the pressure of the gas sealed in the cylinder 128 , and a predetermined tension is applied to the tape 7 via the air tensioner pulley 173.
[0030]
As an air tensioner driving means for forcibly extending each air tensioner 120, as shown in FIGS. 6 and 7, a cross bar 124 supported so as to be movable in parallel in the X-axis direction via two rails 125; A pusher 126 attached to the cross bar 124 and in contact with each slider 122 and an air cylinder 127 for reciprocating the cross bar 124 are provided. When the air cylinder 127 is extended, the air tensioners 120 are extended together via the cross bar 124, the pusher 126, the slider 122, and the like.
[0031]
The first chuck 140 provided as a tape supply stopping means for stopping the supply of the tape 7 is arranged so as to grip the middle of the tape 7 before the air tensioner pulley 173. The first chuck 140 is opened and closed by an air cylinder 141.
[0032]
The controller 4 provided as a control unit controls the operation of the air cylinder 141 and the air cylinder 127, and the tape drawing process and the tape winding process are alternately performed.
[0033]
In the tape drawing process, the operations (1), (2), and (3) are performed with the second chuck 150 closed.
(1) Open the first chuck 140.
(2) The air cylinder 127 is extended.
(3) The air cylinder 127 is contracted.
Thereby, a predetermined amount of the tape 7 is pulled out, and each air tensioner 120 is extended.
[0034]
In the tape winding process, the first chuck 140 is closed and the supply of the tape 7 from the tape reel 110 is stopped. Thus, as the tape 7 is wound, each air tensioner 120 applies a substantially constant tension to the tape 7 while contracting.
[0035]
As described above, each time the winding of the tape 7 is completed, the air tensioner 120 is forcibly extended to pull out the tape 7, and when the tape 7 is wound, the supply of the tape 7 from the tape reel 110 is stopped. Since the air tensioner 120 is contracted, the tape 7 can be wound around the coil 3 in a state where the tension of the tape 7 is applied substantially constant by the air pressure of the air tensioner 120. As a result, the quality of the insulating layer formed by winding the tape 7 is ensured.
[0036]
In the above-described embodiment, one tape 7 is wound over the entire width of the coil 3, but the present invention is not limited to this, and two tapes 7 may be wound around both ends of the coil 3. . In that case, the number of tape reels 110 doubles, but the tape reels 110 may be arranged on both sides of the tape mount 101 correspondingly.
[0037]
The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.
[Brief description of the drawings]
FIG. 1 is a perspective view of a batch transfer winding machine showing an embodiment of the present invention.
FIG. 2 is a front view of the taping unit.
FIG. 3 is a side view of the taping unit.
FIG. 4 is a plan view of the taping device.
FIG. 5 is a side view of the taping device.
6 is a cross-sectional view taken along line EE of FIG.
7 is a cross-sectional view taken along the line DD of FIG.
FIG. 8 is a front view of the taping device.
FIG. 9 is a front view showing a taping operation as another embodiment;
FIG. 10 is a front view showing a taping operation as a conventional example.
[Explanation of symbols]
1 Batch transfer winding machine 3 Coil 4 Controller (control means)
7 Tape 10 Spindle moving mechanism 11 Spindle 20 Spindle transport mechanism 21 Spindle transport base 71 Taping unit 100 Taping device 110 Tape reel (tape supply source)
120 air tensioner 127 air cylinder (air tensioner drive means)
141 First chuck (tape supply stop means)
160 Cutter 162 Tape retainer

Claims (3)

In a taping method of a coil winding machine for supplying a tape wound around a coil, an air tensioner pulley that stretches a rod by air pressure enclosed in a cylinder and applies tension to the tape, and a tape supply source heads to the air tensioner pulley. a tape supply stopping means for stopping the supply of the tape, using the air tensioner drive means for forcibly stretch the rod, and a tape pull-out step for forcibly stretch the rod by supplying the tape from the tape supply, the tape supply A tape winding method for a coil winding machine, wherein a tape winding step of stopping supply of a tape from a power source to an air tensioner pulley and contracting a rod against an air pressure enclosed in a cylinder is alternately performed. In a taping device of a coil winding machine that supplies a tape wound around a coil, an air tensioner pulley that stretches a rod by air pressure enclosed in a cylinder and applies tension to the tape, and a tape supply source heads to the air tensioner pulley. a tape supply stopping means for stopping the supply of the tape, an air tensioner drive means for forcibly stretch the rod, and a tape pull-out to forcibly stretch the rod by supplying the tape from the tape supply source, air from the tape supply source And a control means for alternately performing tape winding for stopping the supply of the tape toward the tensioner pulley and contracting the rod against the air pressure enclosed in the cylinder . Taping device. A cutter for cutting the tape extending into the coils, through the tape during cutting of said tape and a tape presser that faces the coil, the coil tape presser after cutting of the tape through the tape taping unit coil winding machine according to claim 2, wherein is rotated, characterized in that a structure to paste the tape to the coil of the coil while pressing the.

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