JPH037591B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement of a tape cut detection device for a tape winding machine.

(Prior Art) A tape winding machine includes a winding head that rotates around the traveling axis of a material to be wound with a tape such as a cable, and a winding head that is rotatably supported via a brake means. It consists of a pad disk to which a tape pad is attached and a driving means for rotationally driving a winding head, and the tape fed out from the tape pad is wound onto the material to be wound through a dropper pin on the winding head. . In the conventional tape cut detection device, an insulation detection rod is disposed close to a dropper pin, and the dropper pin is biased by a spring to push the insulation detection rod. The tape fed out from the tape pad is wound onto the material to be wound via the dropper pin so as to separate from the insulated detection rod against the action of the spring. If the tape is cut, the dropper pin pushes the insulation detection rod by the action of the spring, so that the cut of the tape is detected. However, with this prior art device, the dropper pin bearing becomes heavy due to debris such as tape scum and dust from the tape pad and becomes ineffective, and when the tape is cut, the tape gets tangled with the dropper pin and insulation is detected. In some cases, the rod could not be contacted and the device malfunctioned. This can be avoided by ensuring that the equipment is maintained, but if this is not done,
Since the above-mentioned equipment malfunctions, it is necessary to constantly maintain the equipment, which has the disadvantage of poor workability. In addition, especially when the rotational speed of the winding head becomes high, the centrifugal force applied to the dropper pin exceeds the force of the spring action, causing the dropper pin to come into contact with the insulation detection rod, which may cause erroneous detection of tape cutting, which may result in high-speed operation. This conventional technique was inappropriate.

(Object of the Invention) An object of the present invention is to provide a tape cutting detection device for a tape winding machine that does not cause malfunctions or false detections.

(Structure of the Invention) A tape winding machine to which the tape cut detection device according to the present invention is applied includes a winding head that rotates around the traveling axis of a material to be wound with a tape, and It consists of a pad disk rotatably supported via a brake means and to which a tape pad is attached, and a drive means for rotationally driving a winding head, so that the tape fed out from the tape pad is wound onto the material to be wound. There is. The tape cut detection device according to the present invention includes a rotation difference detection means for detecting a rotation difference between the winding head and the tape pad disk, and a tape cut detector that determines whether the tape has been cut when this rotation difference disappears. It is characterized by being attached.

With this structure, the presence or absence of the tape is detected without contact, so that malfunctions do not occur, and even if the number of rotations of the winding head increases, erroneous detection does not occur. Although the device of the present invention does not require a dropper pin, it may of course be used in conjunction with the device during low speed operation.

(Embodiment) An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a tape winding machine 12 to which a tape cut detection device 10 according to the present invention is applied. Reference numeral 12 includes a winding head 18 that rotates around the running axis of a material 16 to be wound, such as a cable, around which the tape 14 is to be wound, and a braking means 20 such as an electromagnetic brake that allows the winding head 18 to rotate freely. Tape pad disk 22 supported and to which tape pad 15 is attached and winding head 18
and a driving means 24 for rotationally driving the.
The tape 12 unwound from the tape pad 15 is wound onto the material 16 via the tape guide 26 on the winding head 18.

The tape cutting detection device 10 according to the present invention has a first
As shown in FIG. 1 and FIG. 2, a rotation difference detection means 28 detects the rotation difference between the winding head 18 and the tape pad disk 22, and a tape cutting detector determines whether the tape has been cut when this rotation difference disappears. 30 (second
(see figure).

In the illustrated embodiment, the rotational difference detection means 28 is composed of a proximity switch 32 attached to the winding head 18 and a magnetic body 34 attached to the back surface of the tape pad disc 22 so as to face the proximity switch 32. It's on. One magnetic body 34 or a plurality of magnetic bodies 34 are installed at equal intervals on the circumference. Therefore, the tape pad disk 22 is rotated while the winding head 18 is rotated.
When the tape is fed from the upper tape pad 15 onto the material 16 to be wound through the tape guide 26 on this winding head 18, the tape is fed onto the material 16 on the winding head 18.
The material to be wound 16 is wound at a pitch corresponding to the number of rotations of the tape 14, but in this case, while the tape 14 is present, there is a difference in the number of rotations between the winding head 18 and the tape pad disc 22, and therefore this The proximity switch 32 generates pulses every time it faces the magnetic body 34 at intervals corresponding to the difference in rotational speed. The winding head 18 is rotated at a constant number of rotations, and the feeding speed of the tape 14 is also constant, but the tape pad disk 22 is rotated at a constant speed.
As the diameter of 5 becomes smaller, the number of rotations increases, so the difference in the number of rotations between the two changes. However, as long as there is a difference between the two rotational speeds, it means that the tape 14 is being fed out without being cut.

The tape cut detector 30, as shown in FIG. 2, comprises a timer means 36 which generates a cut signal when a pulse from the proximity switch 32 is not input or continues to be input for a predetermined period of time.
In the illustrated embodiment, the timer means 36 consists of two timers 36A, 36B connected to the power supply via relay contacts 38a, 38b respectively, the relay contacts 38a, 38b being connected to the proximity switch 32 and the drive switch 40 of the winding head. is closed by a relay 38 which is energized via. Timer 36A, 3
6B are set to different time intervals, for example, the timer 36A is set to generate a cut signal when the proximity switch 32 is removed from the magnetic body 34 after the tape 14 is cut and no pulse is received for more than 3 seconds; Further, the timer 36B is set to generate a cut signal when the proximity switch 32 remains opposed to the magnetic body 34 and the pulse continues to be applied for 12 seconds or more after the tape 14 is cut.

Therefore, while the tape winding machine 12 is operating, the tape 14
is cut and the tape pad 22 becomes the brake means 2.
When rotating together with the winding head 18 through 0, the difference in rotational speed between the two disappears, so the proximity switch 32 remains separated from or facing the magnetic body 34. Therefore, the proximity switch 32 does not emit a pulse or remains emitted, and the timers 36A and 3
6B operates to generate a disconnection signal.

(Effects of the Invention) According to the present invention, as described above, the presence or absence of tape is detected without contact based on the presence or absence of a difference in the rotational speed between the winding head and the tape pad disk, thereby preventing malfunctions. Furthermore, even if the rotational speed of the winding head becomes high, false detection does not occur, and the presence or absence of the tape can be effectively detected.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of a tape winding machine equipped with a tape cut detection device according to the present invention, and FIG. 2 is a schematic system diagram of the tape cut detector. 10...Tape cutting detection device of tape winding machine,
12... Tape winding machine, 14... Tape, 15...
... Tape pad, 16 ... Wound material, 18 ...
Winding head, 20... Brake means, 22... Tape pad disk, 24... Drive means, 26... Tape guide, 28... Rotation difference detection means, 30...
Tape cutting detector, 32... Proximity switch, 34
...Magnetic material.

Claims (1)

[Scope of Claims] 1. A winding head that rotates around the running axis of a material to be wound with a tape, and a pad circle that is rotatably supported by the winding head via a brake means and to which a tape pad is attached. In a tape winding machine comprising a plate and a driving means for rotationally driving the winding head, the tape fed out from the tape pad is wound onto the material to be wound. A tape cutting detection device for a tape winding machine, comprising a rotational difference detection means for detecting a rotational difference between the rotational speed and the tape winding machine, and a tape cutting detector for determining whether the tape is cut when the rotational difference disappears. . 2. The tape according to claim 1, wherein the rotational difference detection means comprises a proximity switch attached to the winding head and a magnetic body attached to the tape pad so as to face the proximity switch. Tape cut detection device for winding machine. 3. The tape winding device according to claim 2, wherein the tape cutting detector comprises a timer means for generating a cutting signal when a pulse from the proximity switch is not input for a predetermined period of time or when no pulse is input. Tape cutting detection device for attaching machine.