JP2000318933A - Tape winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow highly precise tension control by detecting the tension of a tape with a highly sensitive dancer roll of a rotational type. SOLUTION: A tape winding device includes a tape wound flyer 3 formed into a disc fixed to one end of a hollow shaft 8 for inserting and moving a core 1 and having a cutout portion 32 in a portion of the peripheral edge thereof and a winding roll 73 protruded at another portion, a tape pad 21 coaxially held on the tape wound flyer 3 via a slip brake 5, a dancer disc 6 provided on the tape wound flyer 3 in a coaxiaily rotatable manner and having a dancer roller 71 protruded at the peripheral edge thereof, a hollow shaft 9 provided in parallel to the hollow shaft 8, containing a slip clutch 10 and a driving source 11 operatively connected to the dancer disc 6 and transmitted so as to rotate the tape wound flyer 3 and the dancer disc 6 at the same speed in the same direction when the driving source 11 is at rest and the slip clutch 10 is fixed at a zero slipping factor, and a potentiometer 12 provided in the hollow shaft 9 for detecting a relative rotating angle to the tape wound flyer 3 and the dancer disc 6 so that the driving source 11 may be controlled, accordingly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a center type tape winding device.

[0002]

2. Description of the Related Art A tape pad is arranged coaxially with a running line of a striated body while running a striated body such as a core to be wrapped with a tape. A tape winding device that winds a tape drawn from a wire around the striatum is called a center-type tape winding device, and various types have been developed.

[0003]

The problem to be solved in the tape winding device is to be able to accurately follow the change in tape tension proportional to the outer diameter of the tape pad, which changes as the winding operation progresses, and to determine in the process of unwinding the tape. The ability to follow sudden tape tension fluctuations that may occur, and thus to be able to keep the tape tension constant, especially at the start and stop of the operation of the tape winding device. An object of the present invention is to provide a novel tape winding device that can achieve such a task.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the invention according to the first aspect of the present invention is fixed to one end of a hollow shaft through which a core is inserted and run. In the shape of a disc, a notch is provided in a part of the peripheral edge, and a tape winding flyer in which a winding roll is protrudingly provided in another part, and the tape winding flyer is coaxial with the tape winding flyer via a slip brake. And a pad mounting cylinder carrying a tape pad, and a dancer roll provided coaxially rotatably with the tape winding flyer, and a dancer roll protruding from a peripheral edge thereof is provided on the outer surface of the tape winding flyer from the cutout portion. A dancer disk adapted to protrude, another hollow shaft provided in parallel with the hollow shaft and including a slip clutch and a drive source operatively connected to the dancer disk; A transmission means set to rotate the tape winding flyer and the dancer disk at the same speed in the same direction when the power source is stationary and the slip ratio of the slip clutch is zero, and provided on the hollow shaft. And
A tape winding device having a potentiometer for detecting a relative rotation angle between the tape winding flyer and the dancer disk and controlling the driving source in accordance with the rotation angle.

[0005]

1 and 2, an embodiment of the present invention will be described. Reference numeral 8 denotes a hollow shaft through which the core 1 on which the tape 2 is to be wound passes. At one end of the hollow shaft 8, a disk-shaped tape-wrapped flyer 3 having a boss at the center is fixed.

A notch portion 32 is provided at a peripheral position corresponding to both ends of one diameter of the tape winding flyer 3, and at a position appropriately distant from the notch portion 32 in the circumferential direction,
A guide roll 72 and a wrap roll 73 are provided so as to be rotatable around their own axes, respectively, so as to stand upright on a disk.

A pulley 81 is fixed to the other end of the hollow shaft 8 and is driven to rotate from the outside. A hollow pad mounting cylinder 4 is coaxially mounted on the boss recess 31 of the tape winding flyer 3 via a slip brake 5, and a tape pad 21 is mounted thereon.

A disk-shaped dancer disk 6 is provided coaxially with the tape winding flyer 3 so as to be rotatable in a plane parallel with the tape winding flyer 3 and is driven to rotate by a fixed pulley 61.
A dancer roll 71 is rotatable around its own axis at the periphery of the dancer disk 6, and a balance weight roll 74 stands upright on the disk surface at a symmetrical position 180 degrees apart from the dancer roll 71 to cut the tape wound flyer. It is provided so that a face comes out from the notch 32.

The winding procedure of the tape 2 will now be described with reference to FIG. 2. The tape 2 fed from the tape pad 21 is wound around the dancer roll 71 in a clockwise direction to guide the guide roll 72. After that, it is wound around the core 1 traveling from the winding roll 73 at the center axis position.

[0010] Another hollow shaft 9 extending parallel to the hollow shaft 8 is prepared, and is rotatably driven from a pulley 82 of the hollow shaft 8 via a pulley 91 attached to one end.

A drive source 11, such as an induction motor, is provided inside the hollow shaft 9. A drive shaft coaxially connected to the main shaft extends along the axis of the hollow shaft 9, and a slip clutch 10 is provided on the way. Through a pulley 92.
The pulley 92 drives the pulley 31 to rotate.

Here, the rotation speed of the dancer disk 6 that is driven to rotate from the hollow shaft 8 via the hollow shaft 9 will be described.
In a state where the drive source 11 is stationary and the slip clutch 10 is fixed, the hollow shaft 8, that is, the tape wound flyer 3 and the dancer disk 6 are rotated in the same direction and at the same rotation speed. Each pulley 82, 91, 92,
A drive ratio of 61 (a gear ratio in the case of a gear) is selected.

A hollow shaft type potentiometer 12 is provided between the pulley 92 of the hollow shaft 9 and the slip clutch 10. The potentiometer 12 has a function of detecting an angular deviation between the tape winding flyer 3 and the dancer disk 6, that is, the dancer roll 71, and transmitting the signal to the slip clutch 10.

A slip ring SR1 is fitted into the hollow shaft 8, and the slip brake 5 is energized. A slip ring SR2 is inserted into one end of the hollow shaft 9, and the drive source 1
1. Energize the slip clutch 10 and the potentiometer 12.

Next, the operation of the tape winding device of the present invention will be described. First, a tape winding operation is started by applying a brake force of an appropriate initial set value to the slip brake 5. The initial set value corresponds to a torque of a magnitude DT / 2 where D is the outer diameter of the tape pad 21 and T is the required tape tension.

Now, as the tape winding progresses, the outer diameter D
Therefore, if the torque by the slip brake 5 is kept constant, the tape tension T naturally has to be increased. Otherwise, the tape pad 21 cannot be unraveled. When this occurs, the dancer roll 71 is drawn counterclockwise in FIG.

On the other hand, the drive source 11 starts rotating at the same time as the tape winding is started, which keeps rotating during the tape winding operation. As can be seen from FIG. 2, if a torque corresponding to the set tension T is not applied to the dancer disk 6, the dancer roll 7
Since 1 is biased and pressed against the edge of the notch 32, this gives the dancer disk 6 a torque large enough to maintain a neutral position in the notch 32.

Since the dancer roll 71 is turned counterclockwise as the outer diameter of the tape pad 21 decreases, this can be detected by the potentiometer 12 as the relative rotation angle between the tape winding flyer 3 and the dancer disk 6.
Based on this detection data, the braking force of the slip brake 5 is adjusted so as to gradually decrease.

The fluctuation of the tape tension T during the tape winding operation is caused by the fluctuation of the dancer roll 71, that is, the tape winding flyer 3
Is detected by the potentiometer 12 based on the relative angular displacement between the slip clutch 10 and the dancer disk 6, a signal from the potentiometer 12 is also sent to the slip clutch 10, the slip ratio of the slip clutch 10 is changed, and the dancer roll 71 returns to the original state. It will be constantly adjusted to return to the neutral position.

[0020]

According to the present invention, since the detection of the tape tension is performed by a high-sensitivity rotary dancer roll, the tension can be adjusted with high accuracy, and a potentiometer, a slip brake, and a slip clutch for controlling the detection and adjustment are provided. Since the electric current is controlled from the outside by using a slip ring, the tape tension can be controlled with high accuracy.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an apparatus according to an embodiment of the present invention.

2 is a front view, and FIG. 1 corresponds to a cross-sectional view taken along line AA in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core 2 Tape 21 Tape pad 3 Tape winding flyer 31 Boss concave part 32 Notch part 4 Pad mounting cylinder 5 Slip brake 6 Dancer disk 61, 81, 91, 92 Pulley 71 Dancer roll 72 Guide roll 73 Winding roll 74 Balance weight 8, 9 Hollow shaft 10 Slip clutch 11 Drive source 12 Potentiometer SR1, SR2 Slip ring

Claims (1)

[Claims] 1. A disk-like shape fixed to one end of a hollow shaft (8) through which a core (1) is inserted and run, a notch (32) is provided in a part of a peripheral edge, and another part is provided. Tape winding flyer (3) provided with winding roll (73)
And a pad mounting cylinder (4) that is coaxially mounted on the tape-wound flyer (3) via a slip brake (5) and carries a tape pad (21); and a coaxial with the tape-wound flyer (3). Is provided rotatably on the
A dancer disc (6) having a dancer roll (71) projecting from the notch (32) projecting to the outer surface of the tape winding flyer (3); 6) another hollow shaft (9) provided in parallel with the hollow shaft (8), including a slip clutch (10) and a drive source (11) operatively connected to the drive source (11). Is stationary and the slip clutch (1)
0) The transmission means (82, 91, 90) set to rotate the tape winding flyer (3) and the dancer disk (6) in the same direction and at the same speed when the slip ratio is fixed to zero.
92, 61) and a potentiometer provided on the hollow shaft (9) for detecting a relative rotation angle between the tape winding flyer (3) and the dancer disk (6) and controlling the drive source (11) accordingly. (12) A tape winding device comprising: