JP2842776B2 - Taping unit for coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a taping unit for winding a tape on a coil bobbin or a winding of a coil.

[0002]

2. Description of the Related Art Some automatic winding machines for automatically winding a coil include a taping unit for winding an insulating tape on a coil bobbin before winding or on a coil after winding. .

[0003] Such a taping unit is, for example,
The leading end of the insulating tape is gripped by a movable chuck, the tape is pulled out from the tape reel, and the drawn tape is brought into contact with the winding portion of the bobbin to rotate the bobbin, thereby winding the tape around the winding portion. When the tape is wound over a predetermined length, the tape is cut by a cutter, and the end of the cut tape is stroked on the winding by a movable stroke mechanism.

[0004]

By the way, depending on the specification of the coil, there is a coil which is wound only at the center of the bobbin and not wound on both sides. In the case of such a coil, for example, a barrier tape having a predetermined thickness is wound around each end of the coil bobbin before winding, thereby defining a winding boundary.

However, when tapes having different widths are used in a conventional taping unit, the winding position of the tape around the coil is likely to shift in the axial direction of the coil, and a plurality of types of taping operations can be performed using the same taping unit. It was difficult to perform it with high accuracy.

The present invention has been made to solve the above problems, and has as its object to provide a taping unit capable of performing a taping operation using various tapes having different widths and thicknesses.

[0007]

SUMMARY OF THE INVENTION The present invention provides a guide for guiding a tape supplied from a tape reel, a chuck for gripping and moving the leading end of the tape guided through the guide, and a guide and a chuck. Coil taping with a mechanism for adhering a part of the tape to the coil, a cutter for cutting the tape adhered to the coil between the guide, and a mechanism for stroking the end of the cut tape to the coil In the unit, the guide includes a plurality of guide members for guiding a plurality of tapes, and a mechanism for moving the guide members between a tape supply position and a non-supply position on the front of the chuck.

Further, each guide member is constituted by a groove-shaped member for guiding the tape, and these grooves are arranged horizontally in a row facing the chuck, while the moving mechanism moves the guide member in the horizontal direction. It is configured to be.

Alternatively, each guide member is formed of a groove-shaped member for guiding the tape, and these grooves are arranged vertically above and below the chuck, while the moving mechanism moves the guide member in the vertical direction. It is configured to be.

The stroke mechanism comprises, for example, a plurality of parallel stroke members which are elastically biased toward the coil, and an actuator which moves the stroke member between a contact position with the coil and a separation position. Be composed.

The chuck is constituted by, for example, the same number of parallel gripping members as the stroking member.

[0012]

By constituting the guide with a plurality of guide members and a moving mechanism thereof, it is possible to supply a plurality of different tapes via a dedicated guide member, and to accurately determine the taping position regardless of the tape used. Control becomes possible.

Each guide member is constituted by a groove-like member for guiding the tape, and the moving mechanism moves these groove-like members arranged horizontally or vertically facing the chuck horizontally or vertically. In addition, a plurality of guide members can be arranged without taking up space.

[0014] In addition, by configuring the stroke mechanism with a plurality of parallel stroke members, even when tapes having different thicknesses are wound around the bobbin in parallel, each tape can be uniformly wound using a separate stroke member. Can be stroked with pressure.

Further, by forming the chuck with the same number of the parallel gripping members as the stroking members, it is possible to simultaneously and individually grip the tapes at the parallel positions having different thicknesses.

[0016]

1 to 6 show an embodiment of the present invention.

FIG. 1 shows an automatic coil winding machine having a taping unit 23.

This automatic winding machine is constructed on a base 1,
The coil bobbin 3 conveyed by the bobbin conveying jig 2B on the conveyor 2 provided on the base 1 is received and winding work is performed, and after the winding is completed, the bobbin 3 is again transferred to the bobbin conveying jig 2B on the conveyor 2. Hand over to The bobbin 3 includes a body 3E for winding and flanges 3D fixed to both ends of the body 3E. A plurality of terminals 3B as shown in FIG. 3 for tying a wire to one of the flanges 3D are provided.

The winding machine has a spindle 4 on which the bobbin 3 is mounted for winding operation. The spindle 4 is connected to a motor (not shown) built in a support 5 fixed to the base 1. An axial through hole is formed in the bobbin 3, and the bobbin 3 is mounted on the spindle 4 via a bobbin insertion jig 3C inserted into the through hole. The bobbin insertion jig 3C is
A member having a shaft protruding axially from both ends of a cylinder having substantially the same diameter as E. One end of the shaft is inserted into the through hole of the bobbin 3, and the other end is inserted into the spindle 4 or the bobbin conveying jig 2B. An annular groove 3A is formed in the cylindrical portion of the bobbin insertion jig 3C.

The taping unit 23 is attached to the support 5 below the spindle 4.

The taping unit 23 is a device as shown in FIG. 2 for winding a tape on the bobbin 3 mounted on the spindle 4 or the winding of the bobbin 3, and can be moved up and down on the support portion 5 via the vertical cylinder 24. It is configured around a supported base member 25. The upper and lower cylinders 24 constitute a mechanism for bonding a part of the tape to the coil.

A guide 27 is supported on the base member 25 via a moving mechanism 37 in the X-axis direction. The guide 27 has a guide member 27A for guiding the insulating tape 26 and a guide member 27B for guiding the two barrier tapes 38A and 38B fixed in parallel, and the guide members 27A and 27B are respectively inverted L. After guiding the insulating tape 26 and the barrier tapes 38A and 38B respectively sent out from a tape reel (not shown) built in the base 1 to the upper side, the bending section is bent at 90 degrees at the bending portion and horizontally. Guide in the direction. The moving mechanism 37 moves the guide 27 in the X-axis direction, and causes the guide member 27A or the guide member 27B to face the front surface of the tape chuck 29 described below according to the moved position.

The base member 25 has a chuck cylinder 28
A tape chuck 29 is supported via A and 28B.
The tape chuck 29 is composed of gripping members 29A and 29B arranged in parallel to the guide 27, and the gripping members 29A are arranged in accordance with expansion and contraction of the chuck cylinders 28A and 28B.
And open and close 29B. Chuck cylinders 28A and 28B
Is supported via a bracket 35 on a horizontal cylinder (not shown) attached to the base member 25, is guided by a rail 34 fixed to the base member 25 in accordance with expansion and contraction of the horizontal cylinder, and is integrated with the tape chuck 29 in the Y-axis direction in the drawing. To move horizontally.

A cutter 30 is provided facing the end of the horizontal portion of the guide members 27A and 27B. The cutter 30 is supported by a base member 25 via a cutter cylinder 31, is displaced in the Z-axis direction in accordance with the expansion and contraction of the cutter cylinder 31, and is moved between a guide 27 and a tape chuck 29 by a tape 26 (3).
8A, 38B).

The base member 25 is located between the tape chuck 29 and the cutter 30 and has the stroke members 32A and 32A.
2B is supported by the stroke cylinder 33. The stroking members 32A and 32B are arranged side by side in the axial direction of the bobbin 3 directly below the bobbin 3 mounted on the spindle 4. The stroking members 32A and 32B are formed of rectangular parallelepiped members, and are supported by the stroking cylinder 33 via springs 36, respectively. The stroke cylinder 33 expands and contracts in the Z-axis direction in the figure, and the stroke members 32A and 32B
And presses against the body 3E of the bobbin 3 with the elastic force of the spring 36. For this reason, the distance between the outward facing end faces of the parallel stroke members 32A and 32B is set smaller than the distance between the flange portions 3D.

The nipper vertical cylinder 17, the vertical cylinder 24, the chuck cylinders 28A and 28B, the cutter cylinder 31 and the stroke cylinder 33 are all constituted by pneumatic actuators operated by compressed air. It is also possible to use. The driving of each actuator is controlled by a controller supplied by another unit.

On both sides of the support part 5, arms 6 and 7 provided with a three-axis moving device are provided. The moving device of the arm 6 includes an X-axis motor 8, a Y-axis motor 9 and a Z-axis motor 10. The moving device arbitrarily moves the arm 6 with respect to the base 1 in the three-dimensional direction. The arm 7 is also arbitrarily moved in a three-dimensional direction by the same X-axis motor 11, Y-axis motor and Z-axis motor 12 not shown.

As shown in FIG. 4, a nozzle 13 is supported at the tip of the arm 7 via a nozzle reversing cylinder 14 and a bracket 15. The nozzle reversing cylinder 14 is a rotary actuator operated by air pressure, has a rotation axis parallel to the Y axis in FIG. 1, and rotates the nozzle 13 in a direction shown by an arrow in FIG.

The nozzle 13 feeds a wire supplied from a wire feeder (not shown) with a predetermined tension toward the bobbin 3 from the tip. The bobbin 3 rotates integrally with the spindle 4 so that the wire is fed to the bobbin 3. Wrap.

A bracket 15 is provided with a nipper cutter 16 for cutting a wire rod, and a nipper vertical cylinder 1
7 is attached.

As shown in FIG. 5, a wire holder 18 and a discard pin 19 are fixed to the arm 6 as auxiliary tools near the base end. The wire pressing member 18 is an arm-shaped member that projects in the horizontal direction toward the bobbin 3. Discarded binding pin 1
Reference numeral 9 denotes a columnar member projecting upward, and has a V-shaped notch at the upper end for binding a wire. In addition, in order to remove a piece of wire rod captured by this notch,
A ring-shaped wire discharging mechanism 22 fits around the outer periphery of the waste binding pin 19. The wire discharging mechanism 22 is driven by an air cylinder (not shown) and slides up and down along the discarding tie pin 19.

Further, a bobbin transfer jig 20 is supported at the tip of the arm 6 as an auxiliary tool via a jig reversing cylinder 21.

The jig reversing cylinder 21 is a rotary actuator operated by air pressure, has a rotation axis parallel to the Y-axis in FIG. 1, and moves the bobbin transfer jig 20 in a direction of approximately 90 degrees in the direction shown by the arrow in FIG. Rotate with.

The bobbin transfer jig 20 has a substantially L-shaped cross section as shown in FIG.
The bobbin 3 is held by fitting the leading end of the bobbin 3 into an annular groove 3A formed in the insertion jig 3C of the bobbin 3. Is rotated between a vertical position and a horizontal position shown in FIG.

Next, the operation will be described.

The operation of the winding machine is roughly classified into three types: movement between the spindle 4 of the bobbin 3 and the bobbin conveying jig 2B, winding on the bobbin 3, and taping on the bobbin 3.

The movement of the bobbin 3 from the bobbin transport jig 2B to the spindle 4 is performed by the arm 6 and the bobbin transfer jig 20 on the arm 6. That is, the arm 6 is moved toward the bobbin conveying jig 2B on the conveyor 2, the leading end of the bobbin transfer jig 20 is fitted into the annular groove 3A of the bobbin inserting jig 3C, and the bobbin 3 and the bobbin conveying jig are moved together. Scoop from 2B. Then, the arm 6 is moved in the direction of the support portion 5, and the jig 20 is rotated by 90 degrees as shown in FIG.
The bobbin 3 is mounted on the spindle 4 via the bobbin insertion jig 3C, and the bobbin delivery jig 20 is moved to the bobbin insertion jig 3C.
Let go.

The movement of the bobbin from the spindle 4 to the bobbin conveying jig 2B is performed in the reverse order. The bobbin transport jig 2B reciprocates by the conveyor 2 between the base 1 and the stock location of the bobbin 3 provided at another location.

The winding operation on the bobbin 3 is performed with the bobbin 3 mounted on the spindle 4. First, the nozzle 13 is rotated to a horizontal position by driving the nozzle reversing cylinder 14, and the arm 7 is moved to bind the wire to the terminal 3 </ b> B of the bobbin 3. At this time, the end of the wire is entangled with the throw-away pin 19, and the wire is entangled between the throw-away pin 19 and the nozzle 13 to the terminal 3B.

Then, the nozzle 13 is turned to the vertical position,
The wire rod from the binding pin 19 to the terminal 3B is cut by the nipper cutter 16 near the terminal 3B. Discard Tying Pin 19
The scraps of the remaining wire are removed by driving the wire discharging mechanism 22.

Next, the arm 7 is moved to move the nozzle 13 to a position where the winding of the wire of the bobbin 3 is started.
The arm 6 is moved in the axial direction of the bobbin 3, the arm 6 is moved, and the wire is pressed against the outer periphery of the bobbin 3 by the wire presser 18. Further, the nozzle 13 is moved down to the horizontal position, and the bobbin 3 is caused to make a full circle by moving the arm 6. As a result, a bent portion of the wire is formed at the position of the wire presser 18. When the bent portion is held on the outer periphery of the bobbin 3 by the wire that has made one round of the bobbin 3, the wire presser 18 is separated from the bobbin 3, and the nozzle 13 is turned to the vertical position again.

When the spindle 4 is rotated from this state, the wire is wound around the bobbin 3. Rotating bobbin 3
By moving the nozzle 13 little by little in the Y-axis direction by moving the arm 7, the wire fed from the nozzle 13 is evenly wound around the outer periphery of the bobbin 3.

The wound wire is bobbin 3 with the wire presser 18.
And the nozzle 13 is moved to bind the wire to the terminal 3B. Further, the wire is entangled with the scraping bin 19 of the arm 6 and the terminal 3 of the bobbin 3 is cut by the nipper cutter 16.
The wire rod from B to the tying pin 19 is cut near the terminal 3B.

When performing a winding operation over a plurality of layers, the above operation is repeated.

On the other hand, the taping operation is performed by the taping unit 23 in a state where the bobbin 3 is mounted on the spindle 4 via the bobbin insertion jig 3C as in the winding operation.

When the insulating tape 26 is wound around the winding, the guide member 27A is arranged in front of the tape chuck 29 by driving the moving mechanism 37.

The end of the insulating tape 26 is gripped by the gripping member 29A by the reciprocating movement and opening and closing of the tape chuck 29 in the Y-axis direction.
And 29B, and is pulled out horizontally from the guide member 27A.
And affix the tip of the insulating tape 26 to the lower surface of the bobbin 3. For this purpose, the insulating tape 26 is set on the guide member 27A with the adhesive surface facing upward in advance.

In this manner, the tape chuck 29 is released while the tip of the insulating tape 26 is stuck on the winding of the bobbin 3, and the spindle 4 is rotated to wind the tape 26 on the winding of the bobbin 3. . Next, the rotation of the spindle 4 is stopped, the cutter 30 is raised by the extension of the cutter cylinder 31, and the insulating tape 26 is cut. The stroke member 3 is extended by the stroke of the stroke cylinder 33.
Raise 2A and 32B and rotate spindle 4 again. As a result, the bobbin 3 rotates while the insulating tape 26 is elastically pressed against the bobbin 3 by the stroke members 32A and 32B, and the end of the insulating tape 26 adheres to the winding.

When the stroke members 32A and 32B are made of, for example, rollers, the diameter of the rollers must be increased in order to avoid interference between the roller bearing and the flange 3D. By forming 32A and 32B in such a rectangular parallelepiped shape, there is no portion that protrudes to the side like a bearing, and there is no fear of interference with the flange portion 3D. For this reason, the stroke member 32
A and 32B can be reduced in the vertical dimension,
The size of the entire taping unit 23 can be reduced as compared with the case where a roller-shaped stroking member is used. The shapes of the stroke members 32A and 32B do not necessarily have to be rectangular parallelepiped. For example, the upper surface may be formed in a curved shape with a raised central portion.

By the way, depending on the specification of the coil, the coil is wound only at the center of the bobbin 3. In such a case, barrier tapes 38A and 38B are wound around the body 3E inside the flange 3D in advance, and a step is provided between the barrier tapes 38A and 38B.

The work of winding the barrier tapes 38A and 38B is also performed by the taping unit 23.

In this case, first, the guide 27 is moved in the X-axis walking direction by the driving of the moving mechanism 37 to move the guide member 27B.
Is disposed in front of the chuck 29, and is guided by the guide member 27B by reciprocating movement and opening and closing of the chuck 29 in the Y-axis direction.
The leading ends of the barrier tapes 38A and 38B are
A and 29B respectively grip. And the base member 2
5, the two barrier tapes 38A and 38B are adhered to predetermined positions of the body 3E of the bobbin 3, and the spindle 4
To rotate.

After the barrier tapes 38A and 38B are wound around the body 3E, the spindle 4 is stopped and the cutter 30 is driven to cut the barrier tapes 38A and 38B. Thereafter, if the stroke members 32A and 32B are raised and the spindle 4 is rotated again while elastically pressing the two barrier tapes 38A and 38B against the body 3E, the barrier tapes 38A and 38B are completely removed to the end. To the body 3E. Barrier tapes 38A and 38B are insulating tapes 26.
Is supplied via a dedicated guide 27B which is different from the above, and the tip is gripped by the individual gripping members 29A and 29B, so that there is no possibility that the winding position around the bobbin 3 is shifted in the axial direction, and accurate taping can be performed.

In some coils, the barrier tape 38 may be used.
A and 38B having different thicknesses may be used. In this taping unit 23, since the gripping members 29A and 29B and the stroke members 32A and 32B are independent of each other, the barrier tapes 38A and 38B
Even if the thicknesses of the strokes are different, the stroking operation and the end gripping operation are performed under appropriate stroking and gripping forces regardless of the thickness.

As described above, by switching the guide members 27A and 27B by driving the moving mechanism 37,
The taping work of the insulating tape 26 and the barrier tapes 38A and 38B can be performed by the same taping unit 23.

FIG. 6 shows another embodiment of the present invention. Here, the guide members 27A and 27B of the guide 27 are arranged side by side in the vertical direction, and the moving mechanism 37 is configured to drive the guide 27 in the Z-axis direction. The guide 27 can be configured in this manner depending on the arrangement of other mechanisms of the winding machine.

If it is not necessary to simultaneously wind the two tapes as in the case of the barrier tapes 38A and 38B, it is sufficient to provide one stroke member and one gripper for the chuck 29.

The chuck 29 has a plurality of gripping members 29.
A and 29B, of course, can be driven by a single chuck cylinder.

[0059]

As described above, the present invention provides a plurality of guide members for guiding a plurality of tapes, and a mechanism for moving these guide members between a tape supply position and a non-supply position on the front of the chuck. , It is possible to supply a plurality of different tapes via dedicated guide members, and it is possible to accurately control the taping position regardless of the tape used.

Each guide member is constituted by a groove-shaped member for guiding the tape, and the moving mechanism moves these groove-shaped members arranged horizontally or vertically facing the chuck horizontally or vertically. Thereby, a plurality of guide members can be arranged without taking up space.

Furthermore, the stroke mechanism is constituted by a plurality of parallel stroke members, or the chuck is constituted by the same number of parallel grasp members as the stroke members, so that a plurality of tapes having different thicknesses and widths can be simultaneously coiled. Can be wound around.

Therefore, according to the present invention, various taping operations required in the coil manufacturing process can be performed by a single taping unit.

[Brief description of the drawings]

FIG. 1 is a perspective view of an automatic winding machine using a taping unit according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a taping unit.

FIG. 3 is an enlarged view of a nozzle portion of FIG.

FIG. 4 is an enlarged perspective view of an arm supporting a nozzle.

FIG. 5 is an enlarged perspective view of an arm that supports a wire holding tool and a delivery jig.

FIG. 6 is an enlarged perspective view of a taping unit showing another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 24 Vertically moving cylinder 26 Insulating tape 27 Guide 27A, 27B Guide member 29 Chuck 29A, 29B Gripping member 30 Cutter 32A, 32B Stroking member 33 Stroking cylinder 37 Moving mechanism 38A, 38B Barrier tape

Claims (5)

(57) [Claims] 1. A guide for guiding a tape supplied from a tape reel, a chuck for gripping and moving the leading end of the tape guided through the guide, and a part of the tape being coiled between the guide and the chuck. In a coil taping unit equipped with a mechanism for bonding to a coil, a cutter for cutting the tape adhered to the coil between the guide, and a mechanism for stroking the end of the cut tape to the coil,
A coil taping unit comprising: a plurality of guide members for guiding the plurality of tapes; and a mechanism for moving the guide members between a tape supply position and a non-supply position on the front of the chuck. 2. Each of the guide members is constituted by a groove-shaped member for guiding the tape, and these grooves are arranged horizontally in a row facing the chuck, while the moving mechanism moves the guide member in the horizontal direction. The coil taping unit according to claim 1. 3. Each of the guide members is formed of a groove-shaped member for guiding the tape, and these grooves are arranged vertically above and below the chuck, while the moving mechanism moves the guide member in the vertical direction. The coil taping unit according to claim 1. 4. A plurality of parallel stroke members that elastically urge the stroke mechanism toward the coil, and an actuator that moves the stroke member between a contact position with the coil and a separation position. The coil taping unit according to claim 1, wherein 5. The taping unit for a coil according to claim 1, wherein the chuck is constituted by the same number of parallel gripping members as the stroking member.