JP2001213577A - Delivery jig for drum core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a delivery jig for a drum core having a center axis offset from that of a collar base portion located at both sides across a winding barrel portion for preventing damage to the drum core during delivery. SOLUTION: The delivery jig for the drum core 2 for delivering the drum core 2 to a chuck 20 at the end of a spindle comprises a receiving portion 3 on which the winding barrel portion 6 for storing a wire rod on the drum core 2 is placed and a magnet 4 fixed to the receiving portion 3 of the drum core 2 with magnetic force, whereby damage to the drum core 2 is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum core transfer jig for winding a wire around its body.

[0002]

2. Description of the Related Art In a conventional process of winding a wire on a drum core, when a drum core is transferred from a drum core holding jig chucking a base portion of the drum core to a collet chuck provided on a spindle portion for rotating the drum core. In the state where the base portion is chucked by the drum core holding jig, the delivery is performed by chucking the flange portion of the drum core portion with the collet chuck.

[0003]

However, in such a case, a state occurs in which the drum core is temporarily held by both the drum core holding jig and the collet chuck at the time of delivery. The held member (that is, the drum core) held by the drum core holding jig and the collet chuck are coaxially arranged. However, the center portion of the base portion and the flange portion of the drum core may be decentered during the manufacturing process. is there.
If the eccentric drum core is simultaneously chucked by the drum core holding jig and the collet chuck, there is a problem that the eccentricity of the drum core causes an external force to be generated on the drum core and the flange portion is cracked.

An object of the present invention is to provide a drum core delivery jig which solves such a problem.

[0005]

According to a first aspect of the present invention, there is provided a jig for transferring a drum core having a winding drum for accommodating a wire and a terminal for connecting the wire to a chuck at the tip of a rotating spindle. A receiving portion on which the winding drum portion of the drum core is placed, and a magnet fixed to the receiving portion by the magnetic force.

According to a second aspect of the present invention, in the first aspect, a convex portion is provided on an end surface of a receiving portion facing the flange portion provided on the spindle side of the drum core winding portion, and the flange portion is closely attached to the chuck by the convex portion. As I pushed the collar part to make it
Correct the perpendicularity of the flange to the center axis of the chuck.

[0007]

According to the first aspect of the present invention, the drum core is not only placed on the receiving portion of the transfer jig but also fixed by the magnet, so that the drum core is transferred to the spindle when the drum core is transferred to the spindle. Detachment can be prevented. Also, when the drum core is gripped by the chuck at the tip of the spindle, even if the center axis of the flange of the drum core and the center axis of the winding drum are misaligned, the terminals are fixed only by the magnetic force of the magnet. It is possible to remove the jig and transfer it to the spindle without damaging the drum core.

In the second invention, a convex portion is provided on an end surface of a receiving portion facing a flange provided on a spindle side of the winding drum portion,
Since the flange is pressed to correct the perpendicularity of the flange with respect to the center axis of the chuck, even if the flange is inclined with respect to the direction perpendicular to the axis of the center axis of the chuck, it is corrected and gripped by the spindle chuck. Therefore, the holding posture is stabilized.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an outline of a jig for transferring a drum core according to an embodiment of the present invention.

The delivery jig according to the present invention comprises: a receiving portion 3 on which the drum core 2 sent from the previous process is placed;
And a magnet 4 for fixing the drum core 2 placed on the holding jig 1. Drum core 2 placed in receiver 3
Is transferred to the spindle unit 27 having the collet chuck 20, and the transfer of the drum core 2 is completed.

Next, a holding jig 1 for holding the drum core 2 will be described in detail with reference to FIGS.

The drum core 2 has a cylindrical winding drum 6 around which a wire is wound, and a flange 9 having a large diameter concentric with the winding drum 6 is provided on the spindle side (left side in FIG. 2) of the winding drum 6. It is provided with a predetermined thickness. A base 7 is formed on the right side of the winding drum 6 with a diameter larger than that of the winding drum 6. A plurality of terminals 8 (three on the upper side and two on the lower side in this embodiment, a total of five) are provided in parallel from the base portion 7 toward the inside in the axial direction (the direction opposite to the spindle). Magnets 4 are respectively provided on the holding jigs 1 below the lower terminals 8 so as to hold the terminals 8, and when the drum core 2 is placed, the magnets 4 are in close contact with the terminals 8, and the drum core 2 is held by the magnetic force. keeping.

The winding drum 6 of the drum core 2 is placed on the receiving portion 3 of the holding device 1 in which a concave portion 10 is formed so as to correspond to the outer shape of the cylindrical winding drum 6.

Accordingly, the drum core 2 is supported on the holding jig 1 by the receiving portion 3 and the magnet 4 at three points, and the center line thereof is set so as to be on the same line as the center line of the collet chuck 20.

In this embodiment, the winding drum 6 has a cylindrical shape. However, the present invention is not limited to this. For example, the winding drum 6 may have a polygonal shape such as a quadrangle. The terminal 8 of the drum core 2 is connected to the magnet 4
The drum core 2 is fixed to the holding jig 1, but the present invention is not limited to this. For example, by providing the magnet 4 in the receiving portion 3, the centering of the drum core and the fixing can be performed by the receiving portion 3.

Next, the spindle 27 for transferring the drum core 2 from the holding jig 1 will be described. As shown in FIG. 1, the spindle 27 is installed so as to face the flange 9 of the drum core 2,
Of the drum core 2 is coaxial with the center axis of the drum core 2. Recess 24 of collet chuck 20
The diameter of the flange 9 is changed by the movement of the claw 22 of the spindle portion 27, is larger than the outer diameter of the flange 9 when it is opened, and has a dimension to grip the outer periphery of the flange 9 when it is closed.

The collet chuck 20 has its claw 22 shown in FIG.
The concave portion 24 of the collet chuck 20 is opened along the slope 26 by being pulled by the arm 34 of the air cylinder shown in FIG. In this state, the concave portion 24 covers the outer periphery of the flange portion 9 and the collet chuck 20 is returned to the initial position by the spring 25, whereby the concave portion 24 is closed and the flange portion 9 is gripped from the outer peripheral side.

In FIG. 1, the holding jig 1 and the spindle 2
7 is separated in the axial direction, but the flange 9 is in contact with the receiving surface 21 of the collect chuck during gripping.
The spindle unit 27 moves in the axial direction. Furthermore, since the drum core 2 cannot move in the axial direction in the gripping state (a flange 9 having a diameter larger than the diameter of the winding drum 6 and a base at both ends of the winding drum 6 where the drum core 2 is placed on the receiving portion 3). Therefore, the delivery of the drum core 2 to the spindle unit 27 is completed by moving the spindle unit 27 in the up-down direction and moving the drum core 2 in the axial direction.

Also, as shown in FIGS. 2 to 4, a convex portion 5 is provided on the spindle-side end surface 3a of the receiving portion 3 so as to be in contact with the end surface 9a of the flange portion 9 of the drum core 2. The protrusions 5 are provided horizontally at two places with the center of the winding drum 6 of the drum core 2 interposed therebetween.

The contact surface 5a of the convex portion 5 with the end surface 9a of the flange 9
Are formed at right angles to the center axis of the drum core 2 and are provided on the same plane. Therefore, the protrusion 5 of the receiving part 3 pushes the end face 9 a of the flange 9 of the drum core 2 and inserts it into the recess 24 of the collet chuck 20. To the receiving surface 21.

Next, the operation will be described.

The drum core 2 sent from the previous process is:
The terminal 8 is placed on the receiving portion 3 of the holding jig 1 and the terminal 8 is held by the magnet 4 provided on the holding jig 1. Therefore, when it is sent to the next step, the collet chuck 20
Even if the center axis of the flange 9 of the drum core 2 held by the drum core 2 and the center axis of, for example, the winding drum section 6 are deviated, the drum core 2 held by the collet chuck 20 can hold the holding jig 1 with the magnetic force of the magnet 4. Can be easily detached from the magnet 4. Therefore, the drum core 2 is simultaneously held by the collet chuck 20 and the holding jig 1.
Can be prevented from being damaged.

When the end surface 9b of the flange 9 is pressed against the receiving surface 21 of the collet chuck 20, the spindle-side end surface 3a of the receiving portion 3 of the holding jig 1 is entirely covered with the end surface 9a of the flange 9 of the drum core 2. When pressing, the collar 9
If the angle of the end face 9a is slightly inclined with respect to the axis perpendicular, the opposite end face 9b may contact the receiving surface 21 of the collet chuck 20 while being inclined, and may be attached while being inclined.

However, in the present invention, the convex portion 5 is provided on the spindle-side end surface 3 a of the receiving portion 3 of the holding jig 1, and the end surface 5 a of the flange portion 9 is formed on the receiving surface 21 of the collet chuck 20 by the end surface 5 a of the convex portion 5. 9b so that the flange 9
Is pressed on the end face 9a. Therefore, the end face 9b of the flange 9
Can be absorbed, and the end surface 9b of the flange portion 9 can be brought into close contact with the receiving surface 21 of the collet chuck 20, and the drum core 2 can be gripped. Therefore, the holding posture of the drum core 2 can be stabilized.

FIG. 5 shows the overall structure of the transfer process of the drum core, which will be described.

First, the spindle section 27 provided with the collet chuck 20 is fixed to a table 30 movable in three axial directions by respective drive motors (40, 41, etc.) via a winding head 28. The collet chuck 20 is connected to a spindle 31 and a spindle motor 32
Can be rotated.

An opening / closing cylinder 33 for opening and closing the collet chuck 20 is provided on the winding head 28. The opening / closing chuck cylinder 33 is provided with the telescopic arm 3
4, the pawl 22 of the collet chuck 20 is pulled toward the spindle, and the collet chuck 20 is opened. To close the collet chuck 20,
The arm 34 is removed from the claw 22, and the spring 25 built into the collet chuck 20 is biased toward the drum core by the spring 25.
When the collet chuck 20 returns to the initial position, the collet chuck 20 closes.

On the other hand, the drum core 2 is placed on a pallet 35 while being fixed to the holding jig 1, and is carried to a predetermined position by a belt 37 of a conveyor 36. The predetermined position is defined by a stopper 38 provided on the side of the belt 37. By stopping at the predetermined position, the central axis of the drum core 2 and the central axis of the collet chuck 20 are controlled to be on the same axis. .

From this state, the table 30 moves in the direction of the drum head 2 to move the collet chuck 20 to a predetermined position where the drum head 2 can be gripped, and the collet chuck 20 is opened. Thereafter, as described above, the collet chuck 20 holds the drum core 2 and the table 3
0 returns to the initial position, and the delivery of the drum core 2 is completed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention.

FIG. 2 is a plan view of the holding jig of the present invention.

FIG. 3 is a side view of the holding jig of the present invention.

FIG. 4 is a front view of the holding jig of the present invention.

FIG. 5 is an overall view of a drum core delivery process of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Holding jig 2 Drum core 3 Receiving part 4 Magnet 5 Convex part 6 Roll body 7 Base part 8 Terminal 9 Flange part

Claims (2)

[Claims] 1. A drum core transfer jig for transferring a drum core having a winding body for accommodating a wire and a terminal for connecting the wire to a chuck at the tip of a rotating spindle, wherein a jig for mounting the drum of the drum core is provided. A jig for delivering a drum core, comprising: a part; and a magnet that is fixed to the receiving part by a magnetic force. 2. A projection provided on an end surface of a receiving portion facing a flange provided on a spindle side of a drum core winding portion, and pressing the flange to correct the perpendicularity of the flange with respect to a central axis of the chuck. The jig for transferring a drum core according to claim 1, wherein: