JPS5829082Y2 - Winding or unwinding device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a winding or unwinding device for a long object such as a linear object such as a magnetic tape, or a long object such as a band-like object.

Long objects such as filaments or strips, such as narrow magnetic tape, are manufactured by cutting a wide tape coated with magnetic material and wound many times into a predetermined width (extremely thin). Then, the cut narrow tape is wound onto multiple reels fixed to a single rotating shaft at the same time with a tension corresponding to the winding condition, and then wound to a predetermined diameter. The magnetic tape thus removed is removed from the rotating shaft together with the reel and transferred to the next process.

However, due to the extremely narrow width of the magnetic tape mentioned above and the inability to secure space from cutting to winding, the tension of multiple magnetic tapes is limited to a single rotating shaft to which multiple reels are fixed. The reality is that they are under control.

This invention is based on a winding or unwinding device developed in view of the above-mentioned circumstances.

A detailed description will be given below with reference to an embodiment showing a single winding device.

First, in Figures 1 to 3 showing an electromagnetic coupling device with a reel used in this type of device, 1 is a long (several meters) rotating shaft, which is rotated by a drive source such as an electric motor, which will be described later. Driven.

1a is a connecting groove formed on the outer periphery of the rotating shaft 1; 2 is a driving body that is a first connecting body fitted to the rotating shaft 1;
It has a plurality of magnetic pole claws 2a arranged annularly so as to constitute different poles alternately in the circumferential direction, a groove 2b formed in the radial direction at 5 to communicate with the communication groove 1a, and a suppressing part 2c.

Note that the driving body 2 is prevented from rotating by tightening a bolt (not shown) to the pressing portion 2c with respect to the rotating shaft 1.

Reference numeral 3 designates an excitation coil built into the lower part of the magnetic pole pawl 2a of the driver 2, and is wound around the bobbin 4.

Reference numeral 5 designates a lead wire of the excitation coil 3, one of which is guided through the groove 2b of the driver 2 to the communication groove 1a of the rotary shaft 1, led out through the communication groove 1a, and connected to a power supply device to be described later.

The other end is grounded at an appropriate position on the driver 2.

Reference numeral 6 denotes a cylindrical driven body which is a second connecting body rotatably supported on the rotating shaft 1 via a bearing 1, and 8 includes a plurality of magnetic pole claws 2a fixed to the cylindrical portion 6a of the driven body 6. a hysteresis material having a surface facing the surface with a predetermined gap therebetween;
Reference numeral 9 denotes a ring-shaped reel that is removably attached to the outer circumference of the cylindrical portion 6a of the driven body 6, and has an inner diameter of 72 m and an outer diameter of approximately 266 mm.

10 is a key that can be easily inserted or removed between the roll 9 and the cylindrical portion 6a; 11 is a variable resistor attached to the side of the driver 2; It is connected between the device and adjusts the excitation current value within a minute range.

Incidentally, as can be seen from the inner diameter dimensions of the hysteresis clutch beam 9 mentioned above, its radial and axial dimensions are very short, and this clutch has a single rotating shaft 1 as shown in FIG. A plurality of excitation coils (for example, about 20 excitation coils) are arranged in parallel, and each excitation coil 3 is connected in parallel to the power supply device through one bus bar 12 disposed in the communication groove 1a.

FIG. 4 shows a configuration in which a plurality of such hysteresis clutches are used to wind up an extremely narrow magnetic tape.

In the figure, 13 is a wide magnetic tape wound many times, 14 is a cutter for cutting into a predetermined narrow width, 15 is the cut magnetic tape, and 16 is a magnetic tape 15.
The pinch rollers 17, 18, and 19 are the rotating shaft 1
The hysteresis clutches are equipped with excitation coils 3a, 3b, and 3c, respectively.

11a. 11b and 11c are variable resistors for adjusting excitation current, 20 is a tension control power supply device that energizes each excitation coil 3a, 3b, and 3C, and 9a, 9be9c is attached to each clutch 17, 18, and 19. Gere magnetic tape 15
The reel 21 that winds up is an electric motor that rotates the rotating shaft 1 at a predetermined speed.

Now, the operation of the embodiment configured as described above is as follows.

First, from the power supply device 20, the bus bar 12 and the lead wire 5a,
When the excitation coils 3a, 3b, 3CvC excitation current of each clutch 17.1 & 19 is applied and energized through 5b, 5c, different poles of NS occur alternately in the plurality of magnetic pole claws 2a, and Opposing hysteresis material 80
Induction poles also occur on the surface.

At the same time, when the rotating shaft 1 is driven by the electric motor 21 and the driving body 2 of each clutch 17, 18, 19 rotates at a predetermined speed, the driven body is driven by the magnetic attraction force generated between the magnetic pole pawl 2a and the hysteresis material 8. A constant rotational torque is transmitted to the body 6, and the driven body 6 rotates at a predetermined speed.

Therefore, each reel 9a fixed to the outside of this driven body 6,
9b and 9c rotate with a constant rotational torque, and the narrow magnetic tape 15 produced by cutting the wide magnetic tape on the unwinding side is transferred to each reel 9a, 9b, 9c via a pinch roller 16. They are wound up individually.

Here, as is well known, this hysteresis clutch has a so-called constant torque property that shows a constant torque with respect to changes in the relative rotational speed between the driving body 2 and the driven body 6. Therefore, the winding diameter of the reel 90 gradually increases. If the rotational speed of the driven body 6 increases to , the rotational speed of the driven body 6 decreases, and the winding tension of the magnetic tape 150 is always controlled to be constant.

As described above, a plurality of clutches 17 are arranged in parallel.
．． 18. When the magnetic tape 15 is wound up to a predetermined diameter on each reel 9a, 9b, 9c of 19, the reel 9a, 9b, 9c is removed from each driven body 6 and the process moves to the next step.

That is, to remove it, simply remove the key 10, and the reel 9a,
The fixed relationship between 9b, 9c and the driven body 6 can be released, and each reel 9a.

All you have to do is move 9b and 9c in sequence in the direction of the arrow and remove them.

If it is desired to increase or decrease the winding tension depending on the material of the filament or strip, such as weight, amount of elongation, etc., this can be done easily and reliably by operating the variable resistor 11 as described above.

As described above, each driven body 6rtc reel 9a, 9b, 9c of a plurality of clutches 17, 18, 19 arranged in parallel on one rotating shaft 1 is removably fixed, and each reel 9a,
If the winding tension of each of the magnetic tapes 14 to be wound onto the reels 9b and 9c is controlled (2), each reel 9a will be affected by variations in the material of the magnetic tape 14.

Even if the winding tension on the reels 9b and 9c tries to change, that is, even if the reel 9a side loosens and the other reel 9b side tries to tighten significantly, the clutch to which each reel 9a, 9b, 9c is attached All reels 9a, 9b by sliding action of 17,18°19.

The winding tension of each of the magnetic tapes 14 wound around the magnetic tape 9c can be controlled to be approximately constant, and the winding operation can be carried out smoothly.

This becomes more noticeable as the number of clutches attached to one rotating shaft increases.

Note that this invention is not limited to the embodiments and can be modified in various ways.

As described above, this invention involves arranging a plurality of electromagnetic clutch devices with reels in parallel on a single rotating shaft, and simultaneously operating these electromagnetic clutch devices to wind a long object onto a reel or unwind it from a reel. By arranging a bus bar connected to the power supply device in the communication path formed on the rotating shaft and connecting the excitation coils of each electromagnetic clutch device to this bus bar, wiring becomes extremely simple and centralized wiring is possible. Moreover, by using a non-contact type clutch such as a hysteresis clutch as an electromagnetic clutch device with a reel, the winding tension on each reel tends to change due to variations in the material of the long object being wound onto each reel. However, by the sliding operation of each electromagnetic clutch device, the winding tension can be controlled to be substantially constant, and the winding operation can be carried out smoothly.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the reel-equipped electromagnetic coupling device used in this invention, Fig. 2 is its left side view, Fig. 3 is its right side view, and Fig. 4 is a configuration showing an embodiment of this invention. It is a diagram. In the figure, 1 is a rotating shaft, 1a is a communication groove, 2 is a driving body, 2
b is a groove, 3 is an excitation coil, 5 is a lead wire, 6 is a driven body, 8 is a hysteresis material, 9 is a reel, 10 is a key, 1
1 is a variable resistor, 12 is a bus bar, 13 is a wide magnetic tape, 14 is a cutter, 15 is a narrow magnetic tape, 16 is a pinch roller, 17, 18, 19 is a hysteresis clutch, 20 is a power supply device, 21 is an electric motor. Note that the same reference numerals in each figure indicate the same parts.

Claims (1)

[Scope of utility model registration request] A single rotating shaft that is rotationally driven by a drive source and has a communication path that communicates with the outside, a first connecting body fixed to the outer periphery of the rotating shaft, and a first connecting body that is always connected to the first connecting body through a gap. and a second connecting body whose connected state with the first connecting body is controlled by the biasing of the excitation coil facing each other,
A plurality of non-contact electromagnetic clutch devices arranged in parallel in the axial direction of the rotating shaft, a plurality of leats attached to each second connecting body of these electromagnetic clutch devices, and the electromagnetic clutch device A winding or unwinding device comprising a connection wire led out to the outside through a communication path of the rotating shaft to connect each excitation coil and a power supply device.