JP2003059745A - Taping method and apparatus of coil winding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a taping method and a taping apparatus of a coil winding machine that gives the tension of a tape nearly fixedly. SOLUTION: The taping apparatus of a coil winding machine is equipped with an air tensioner 120 that is extended by an air pressure for giving tension to a tape 7, a first chuck (tape supply stop means) 140 for stopping the supply of the tape 7 from the tape reel 110, an air cylinder (air tensioner driving means) for extending the air tensioner 120 forcedly, a tape drawer that supplies the tape 7 from the tape reel 110 for extending the air tensioner 120 forcedly, and a controller 4 (controlling means) that stops the supply of the tape 7 from the tape reel 110 and carries out tape winding for contracting the air tensioner 120 against the air pressure alternately.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in a taping method and a taping device provided in a coil winding machine.

[0002]

2. Description of the Related Art For example, a coil used for a transformer has a taping process as an insulating layer between a primary winding and a secondary winding. Is done in a regular manner.

[0003]

However, in the case where the taping is automatically performed using such a conventional coil winding machine, the tape tension is constantly applied when the tape is wound around the coil. There was a problem that it was difficult.

Further, as shown in FIGS. 10 (a) to 10 (d), a taping device for pasting a tape on a conventional coil is shown in FIGS. 10 (a) to 10 (d). Was pressed against the coil 3 via the tape 7 and rotated to attach the tape 7 to the coil 3. Therefore, when the tape 7 is cut by the cutter 7, the tape 7 is easily lifted from the coil 3, and the tape 7 cannot be reliably attached.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a taping method and apparatus for a coil winding machine which applies a substantially constant tape tension.

[0006]

The first invention is applied to a taping method of a coil winding machine for supplying a tape wound around a coil.

An air tensioner that expands by air pressure to apply tension to the tape, a tape supply stopping means that stops the supply of the tape from the tape supply source, and an air tensioner driving means that forcibly expands the air tensioner. Tape pulling process to supply the tape from the tape supply source and forcibly extend the air tensioner, and tape winding process to stop the tape supply from the tape supply source and shrink the air tensioner against the air pressure. It is characterized by performing and alternately.

The second invention is applied to a taping device of a coil winding machine which supplies a tape wound around a coil.

An air tensioner that expands by air pressure to apply tension to the tape, a tape supply stopping means that stops the supply of the tape from the tape supply source, and an air tensioner driving means that forcibly expands the air tensioner. Alternately, tape is supplied from the tape supply source, the air tensioner is forcibly expanded to pull out the tape, and tape winding is performed to stop the tape supply from the tape supply source and shrink the air tensioner against the air pressure. And a control means for performing the control.

The third invention is applied to a taping device of a coil winding machine for attaching a tape to a coil.

A cutter for cutting the tape extending to the coil and a tape holder facing the coil via the tape when the tape is cut are provided, and the tape holder is pressed against the coil via the tape after the tape is cut. It is characterized in that the tape is attached to the coil by rotating.

[0012]

According to the first and second inventions,
Each time the winding of the tape is completed, the air tensioner is forcibly extended to pull out the tape, and when the tape is wound, the supply of tape from the tape supply source is stopped and the air tensioner is contracted. The tape can be wound around the coil in a state in which is applied substantially uniformly by the air pressure of the air tensioner.

According to the third aspect of the invention, since the tape retainer faces the coil via the tape from the time of cutting the tape, the end portion of the tape is securely attached without rising from the coil.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 is a batch carrier winding machine for automatically manufacturing coils used in transformers and the like. Here, description will be made assuming that three axes of X, Y, and Z orthogonal to each other are set, the X axis extends in the horizontal front-rear direction, the Y axis extends in the horizontal lateral direction, and the Z axis extends in the vertical direction.

In the batch transport winding machine 1, four spindles 11 for rotating bobbins (cores) of coils and two spindles 21 for the platform 2 are mounted on the spindle transport table 21 in the Y direction.
The spindle transfer mechanism 20 that moves in parallel in the axial direction, the spindle transfer mechanism 10 that moves the spindle 11 with respect to the spindle transfer table 21, and the bobbin transfer to and from each spindle 11 via the jig 92 by the movement of each spindle 11. Bobbin insertion / ejection unit 91 that is automatically performed
A first winding unit 41 and a second winding unit 42 that supply a wire to the bobbin to form a coil, and a first winding unit 41 and a second winding unit 4 for the gantry 2.
2, a winding unit moving mechanism 40 for moving the tape 2, a taping unit (taping device) 71 for taping the coil, a processing unit moving mechanism 70 for moving the taping unit 71 with respect to the gantry 2, and each mechanism 20, And a controller 4 for controlling the operation of each of the servomotors and the like that compose 40 and 70.

The winding unit moving mechanism 40 moves the winding unit 41 with respect to the gantry 2 in three axial directions of X, Y and Z. The winding unit moving mechanism 40 is a left-right moving table 7 that moves in the Y-axis direction with respect to the gantry 2 via a servo motor 72 or the like.
3, a front-rear moving table 75 that moves in the X-axis direction with respect to the left-right moving table 73 via a servo motor 74, and a Z-axis direction with respect to the front-rear moving table 75 through a servo motor 76. And a lift 77.

Since the batch transport winding machine 1 moves between the units 41, 71 and 42 while the bobbin is mounted on the spindle 11, the winding work and taping work are performed in order.
There is no work to transfer bobbins between the pallet and each of the units 41, 71, 42, which reduces the cause of work instability and improves product yield.

Next, the taping unit 71 for taping the coil will be described. Note that, although FIG. 1 shows a device provided with four tapes 7 for convenience, in the present embodiment, a device provided with six tapes 7 is shown in FIG.
It will be described with reference to FIG.

The taping unit 71 is a tape clamp 13 for holding the tip of the tape 7 with respect to the moving table 82.
0, a second chuck 150 for gripping the middle of the tape 7 with respect to the tape mount 101, and six cutters 160 for cutting the tape 7 respectively. 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.

Each tape clamp 130 is supported by a moving table 82, and the moving table 82 is moved by a moving mechanism 83 in X, Y, Z directions.
Move in the 3 axis directions.

The taping unit 71 includes a cutter 160 that cuts the tape 7 by retracting the tape 7 in the path extending to the coil 3, and a tape retainer 162 that faces the coil 3 through the tape 7 when the tape 7 is cut. The tape 7 is attached to the coil 3 by rotating the tape retainer 162 while pressing it against the coil 3 via the tape 7 after cutting the tape 7.

In the present embodiment, the cutter 160 projects from the gap between the tape retainer 161 and the tape retainer 162 so as to be retractable, and the tape retainer 162 extends from the tape retainer 161.
The tape 7 extending across the tape is cut in the middle.

The six cutters 160 are attached to an elevating table 163 so that they can be simultaneously moved up and down. Lift 1
63 is supported on the tape mount 101 via a rail 164 so as to be movable up and down in the Z-axis direction. The lift table 163 is driven by a pair of air cylinders 166 so as to move down against the spring 165.

In the taping unit 71, taping for winding the tape 7 around the coil 3 is performed in the following procedure. 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. The spindle 11 is rotated and the tape 7 is attached to the outer circumference 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. As shown in FIG. 9A, the spindle 11 is moved in the Y-axis direction to extend the tape 7 from the tape retainer 161 to the tape retainer 162. At this time, the tape retainer 162 faces the coil 3 via the tape 7. As shown in FIG. 9B, the second chuck 150 is closed and the tape 7 is gripped halfway. Then, the cutter 16
0 is projected from the gap between the tape holders 161 and 162,
Cut the tape 7. Also at this time, the tape retainer 162
Faces the coil 3 via the tape 7, and thus the end 7a of the tape 7 cut by the tape retainer 162
Is prevented from rising from the outer circumference of the coil 3. The spindle 7 is rotated while pressing the tape 7 wound around the coil 3 against the tape retainer 162, and the tape 7 is attached to the coil 3.

Thus, since the tape retainer 162 faces the coil 3 via 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 floating.

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. Taping device 100
Is a tape reel 110 around which the tape 7 is wound, which is provided as a tape supply source, a first chuck 140 that holds the middle of the tape 7 as a tape supply stopping means, and an air tensioner 120 that applies tension to the tape 7 by air pressure.
6 and 6 each, and an air cylinder 127 (see FIG. 6) for forcibly expanding the air tensioner 120 by air pressure. Each tape reel 11
The tape 7 fed from 0 is pulleys 171 to 175.
And extends to the pulley 176.

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 12
2 is supported via a rail 123 so as to be movable in parallel in the X-axis direction.

The air tensioner 120 is a cylinder 123.
The rod 121 is biased in the extension direction by the pressure of the gas enclosed therein, and a predetermined tension is applied to the tape 7 via the air tensioner pulley 173.

As an air tensioner driving means for forcibly extending each air tensioner 120, as shown in FIGS. 6 and 7, a crossbar supported by two rails 125 so as to be movable in parallel in the X-axis direction. 124, a pusher 126 attached to the crossbar 124 and in contact with each slider 122, and an air cylinder 127 that reciprocates the crossbar 124. Air cylinder 1
When the extension operation of 27 is performed, the respective air tensioners 120 are aligned and extended through the crossbar 124, the pusher 126, the slider 122, and the like.

The first chuck 140 provided as a tape supply stopping means for stopping the supply of the tape 7 is arranged in front of the air tensioner pulley 173 so as to grip the middle of the tape 7. The first chuck 140 is opened and closed by an air cylinder 141.

Controller 4 provided as control means
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.

In the tape drawing process, the second chuck 1
The operation is performed with 50 closed. Open the first chuck 140. The air cylinder 127 is extended. The air cylinder 127 is contracted. As a result, a predetermined amount of tape 7 is pulled out and each air tensioner 120 is expanded.

In the tape winding process, the first chuck 1
40 is closed and the supply of the tape 7 from the tape reel 110 is stopped. As a result, as the tape 7 is wound, the air tensioners 120 contract and apply substantially constant tension to the tape 7.

With the above construction, the tape tensioner 120 is forcibly extended every time the winding of the tape 7 is completed to pull out the tape 7, and the tape 7 is supplied from the tape reel 110 when the tape 7 is wound. Since the air tensioner 120 is stopped and 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.

In the above embodiment, one tape 7 is wound around the entire width of the coil 3, but the present invention is not limited to this, and two tapes 7 are wound around both ends of the coil 3. May be In that case, the number of tape reels 110 is doubled, but the tape reels 110 may be arranged on both sides of the tape rack 101 correspondingly.

It is obvious that the present invention is not limited to the above-mentioned embodiments and various modifications can be made within the scope of the technical idea.

[Brief description of drawings]

FIG. 1 is a perspective view of a batch carrier 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.

FIG. 6 is a sectional view taken along line EE of FIG.

FIG. 7 is a sectional view taken along line D-D of FIG.

FIG. 8 is a front view of the taping device.

FIG. 9 is a front view showing the operation of taping as another embodiment.

FIG. 10 is a front view showing a taping operation as a conventional example.

[Explanation of symbols]

1 Batch transport winding machine 3 coils 4 Controller (control means) 7 tapes 10 Spindle moving mechanism 11 spindles 20 Spindle transfer mechanism 21 Spindle carrier 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 stopping means) 160 cutter 162 tape holder

Claims (3)

[Claims] 1. A taping method of a coil winding machine for supplying a tape wound around a coil, comprising: an air tensioner for expanding by air pressure to apply tension to the tape; and a tape supply for stopping the supply of the tape from a tape supply source. Using the stopping means and the air tensioner driving means that forcibly extends the air tensioner, the tape pulling process that supplies the tape from the tape supply source and forcibly extends the air tensioner, and the tape supply from the tape supply source. And a tape winding step of stopping the air tensioner to shrink the air tensioner against the air pressure are alternately performed. 2. In a taping device of a coil winding machine for supplying a tape wound around a coil, an air tensioner for expanding by a pneumatic pressure to give a tension to the tape, and a tape supply for stopping the supply of the tape from a tape supply source. Stopping means, air tensioner drive means that forcibly extends the air tensioner, tape puller that feeds the tape from the tape supply source and forcibly extends the air tensioner, and stops the tape supply from the tape supply source. A taping device for a coil winding machine, comprising: a control device that alternately performs tape winding to shrink the air tensioner against air pressure. 3. A taping device for a coil winding machine for attaching a tape to a coil, comprising: a cutter for cutting the tape extending to the coil; and a tape retainer that faces the coil via the tape when the tape is cut, A taping device for a coil winding machine, characterized in that after the tape is cut, the tape retainer is pressed against the coil via the tape and rotated to attach the tape to the coil.