JPH08113399A - Strip disposal device - Google Patents

Abstract

PURPOSE: To prevent choking of a magnetic tape to be disposed into an air tube, and execute magnetic tape disposal work without troubles. CONSTITUTION: In a tape disposal device 12 for sucking and disposing a magnetic tape 1 through an air tube 21, an orifice 25 is installed inside the air tube 21, and a cutter 26 is provided on an inner circumferential edge of the orifice 25, so the magnetic tape 1 can be cut with this cutter 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt-shaped material discarding device for cutting a belt-shaped material such as a magnetic tape and discarding it.

[0002]

2. Description of the Related Art In a pancake in which a band-shaped material such as a magnetic tape is wound in a coil shape, the band-shaped material at the starting end portion and the end portion is not used, and after cutting, it is sucked by a suction machine through a duct and discarded. It

[0003]

However, the band to be discarded is long, and as shown in FIG. 6, the air flow (speed V) in the duct a generated by the suction device is
The maximum value is at the axial center of the duct a, and the minimum value (V = 0) on the inner wall surface of the duct a. As a result of these, a part of the band that is being aspirated and discarded adheres to the inner wall surface of the duct a due to static electricity or the flow of air, and the band that is sucked afterwards adheres to the adhered band, and Then, the inside of the duct a may be clogged with a band-shaped material. Therefore, in the conventional band-discarding device, it is necessary to clean the inside of the duct a frequently to remove the band-entangled inside the duct a.

The present invention has been made in consideration of the above circumstances, and provides a band-disposing device which can prevent clogging of a waste band in a duct and can smoothly perform a band-disposing operation. The purpose is to

[0005]

According to a first aspect of the present invention, in a belt-shaped material discarding device for sucking and discarding a belt-shaped material through a duct, a small diameter portion is formed in the duct, and the small diameter portion is formed. A cutter is arranged on the inner peripheral edge, and the above-mentioned strip can be cut by this cutter.

According to a second aspect of the present invention, the small-diameter portion of the first aspect is an orifice, and a cutter is arranged on the inner peripheral edge of the orifice.

According to a third aspect of the present invention, the small diameter portion in the first aspect is a small diameter duct, and a cutter is arranged at a boundary step portion between the small diameter duct and the duct.

[0008]

Therefore, according to the belt-shaped material discarding apparatus of the first, second and third aspects, when the belt-shaped material to be discarded is sucked and flows in the duct, the flow velocity in the small diameter portion (orifice, small diameter duct) is increased. Since the number of strips increases, the strip comes into contact with the cutter on the inner peripheral edge of the small diameter portion and is cut short. Therefore, a long strip adheres to the inner wall surface of the duct in the duct, other long strips are entangled with the adhered strip, and it is possible to avoid a situation in which the duct is gradually clogged. Therefore, it is not necessary to frequently clean the duct in order to remove the clogging in the duct, and the work of discarding the band-shaped material can be performed without delay.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway front view showing a tape leading end drawing device to which a tape discarding device which is a first embodiment of a band-shaped substance discarding device according to the present invention is applied. FIG. 2 is a front view showing the tape leading end drawing device of FIG. 1 together with a tape cutting and joining device. FIG. 3 is a perspective view showing the orifice with a cutter of FIG. 1. FIG. 4 is an operation diagram showing a work of collecting a waste tape by the tape leading-out device of FIG.

As shown in FIG. 2, a magnetic tape 1 as a strip is wound around a hub 2 in a coil shape to fix a pancake 3 as a strip coil. Magnetic tape 1
Is formed by fixing metal powder as solid powder to a base material such as polyethylene, polyethylene terephthalate, or polyamide, and is easily cut even by contact with a cutter 26 described later. . The hub 2 of the pancake 3 is removably attached to the delivery shaft 4.

The tape leading-out device 10 comprises a suction unit 11 and a tape discarding device 12 as a band discarding device.

A suction unit 1 of the tape tip drawing device 10
When the pancake 3 is attached to the feed shaft 4, the magnetic tape 1 holds and pulls the tip of the magnetic tape 1 hanging from the pancake 3. Further, the leading end of the pulled-out magnetic tape 1 and another magnetic tape 1 are joined by the tape cutting and joining device 5, and the unnecessary magnetic tape 1 among the pulled out magnetic tapes 1 is a cutter of the tape cutting and joining device 5. When it is cut by a tape (not shown), the tape discarding device 12 of the tape tip pulling device 10 collects and discards the unnecessary magnetic tape 1.

In the tape cutting and joining device 5, the suction unit 11 of the tape tip drawing device 10 holds the tip of the magnetic tape 1 from the pancake 3 mounted on the delivery shaft 4 and pulls it out to the tape suction block 6. When transported, the magnetic tape 1 is attracted to the tape attraction block 6, the magnetic tape 1 is cut by the cutter (not shown), and the magnetic tape is already attracted to the tape attraction block 6. The above magnetic tape is joined by the splicer 7. As a result, the tip of the magnetic tape 1 of the pancake 3 mounted on the delivery shaft 4 and the other magnetic tape 1 are connected. Reference numeral 8 in FIG. 2 indicates a guide roller.

The suction unit 11 has a unit housing 13 and is constructed so as to be able to move forward and backward toward the delivery shaft 4 in the direction of arrow A in FIG. As shown in FIG. 1, two suction holes 14A and 14B are formed in parallel in the unit housing 13, and a suction hole 14C that connects these suction holes 14A and 14B is also formed. The suction hole 14C is formed orthogonal to the axis of the suction holes 14A and 14B. A suction pipe 15 that guides the magnetic tape 1 into the suction hole 14A is fitted in the suction hole 14A.

A rubber cushion 16 is housed in the suction hole 14A of the unit housing 13. The rubber cushion 16 has an outer diameter substantially the same as the inner diameter of the suction hole 14A, and is attached to the piston rod 18 of the air cylinder device 17. Cylinder 19 of air cylinder device 17
Are fitted and fixed to the unit housing 13. The movement of the piston 20 of the air cylinder device 17 causes the rubber cushion 16 to reciprocate in the axial direction of the suction hole 14A (direction of arrow B) via the piston rod 18. The rubber cushion 16 reaches the two-dot chain line position by the forward movement,
The magnetic tape 1 sucked (described later) from the suction hole 14A into the suction hole 14C is sandwiched between the magnetic tape 1 and the wall surface of the suction hole 14A.

The tape disposal device 12 includes an air tube 21 as a duct, an air filter 22, and a solenoid valve 23.
A vacuum pump 24 as a suction device is sequentially arranged, and an orifice 25 as a small diameter portion is installed in the air tube 21.

ON operation of the vacuum pump 24 and the solenoid valve 23
By the opening operation of the suction holes 14A, 1A of the suction unit 11,
Negative pressure is set in 4B and 14C. Due to this negative pressure, the tip of the magnetic tape 1 hanging from the pancake 3 passes through the suction pipe 15 and suction holes 14A, 14C and 1
4B is sucked. Further, when the magnetic tape 1 sucked and sandwiched by the suction unit 11 is cut by the cutter (not shown) of the tape cutting and joining device 5 shown in FIG. 2 (FIG. 4 (B)), the tape discarding device 12 is The magnetic tape 1 that is cut and discarded is sucked by the vacuum pump 24 and collected in the air filter 22.

The waste magnetic tape 1 collected in the air filter 22 is cut into short pieces by the orifice 25. That is, this orifice 25 is used as the air tube 21.
The cutter 26 is installed on the inner peripheral wall of the machine, as shown in FIG. The flow of air sucked by the vacuum pump 24 and flowing in the air tube 21 increases when passing through the orifice 25, and after passing through the orifice 25, flows outward in the diameter direction of the orifice 25 to be in a turbulent state. . Therefore, when the discarded magnetic tape 1 rides on the air flow and tries to adhere to the inner wall surface of the air tube 21, the magnetic tape 1 contacts the cutter 26 of the orifice 25 and is cut short.

Next, the function and effect will be described. 1 and 2
As shown in, when the pancake 3 is attached to the delivery shaft 4, the suction unit 11 advances toward the delivery shaft 4. At this time, the delivery shaft 4 rotates, and at the same time, the vacuum pump 24 of the tape discarding device 12 is turned on, and the solenoid valve 23
Is opened and the suction holes 14A, 1A of the suction unit 11 are opened.
Negative pressure is set in 4B and 14C. Suction unit 1
When 1 approaches the pancake 3, the advancing of the suction unit 11 is stopped, and during this period, the suction hole 14 is moved by the action of the negative pressure.
The tip of the magnetic tape 1 in the pancake 3 is sucked into A, 14B, and 14C.

When the magnetic tape 1 is sucked up to the suction hole 14C of the suction unit 11, as shown in FIGS. 1 and 4A, the air cylinder device 17 operates and the rubber cushion 16 moves forward, The rubber cushion 16 holds the magnetic tape 1 with the wall surface of the suction hole 14A. At this time, at the same time, the vacuum pump 24 is turned off, the electromagnetic valve 23 is closed, and the negative pressure action of the tape discarding device 12 is released.

After the magnetic tape 1 is sandwiched by the rubber cushion 16 as described above, the suction unit 11 retracts away from the pancake 3 and the magnetic tape 1 is pulled out from the pancake 3. Suction unit 11
Moves backward to a position below the tape cutting / bonding device 5 shown in FIG. 2, and at this position, the magnetic tape 1 of the pancake 3 held by the suction unit 11 is adsorbed by the tape suction block 6 of the tape cutting / bonding device 5. The tape is cut by a cutter (not shown) of the tape cutting / bonding device 5, and is spliced to another magnetic tape 1 by a splicer 7.

The magnetic tape 1 to be discarded, which has been cut as described above, uses the vacuum pump 24 in the tape discarding device 12.
4 is turned on and the solenoid valve 23 is opened.
It is sucked like (B) and (C). The magnetic tape 1 to be discarded, which has been sucked by the tape discarding device 12, flows through the air tube 21 and the cutter 26 of the orifice 25.
It is cut into short pieces and collected in the air filter 22.

According to the above-described embodiment, when the discarded magnetic tape 1 is sucked and flows in the duct 21, the flow velocity of the air sucked by the orifice 25 is increased, so that the magnetic tape 1 is replaced by the orifice 25. Cutter 26 on the inner edge
And is cut short. Therefore, the long magnetic tape 1 adheres to the inner wall surface of the duct in the duct 22, the other long magnetic tape 1 is entangled with the adhered magnetic tape 1, and the duct 22 is gradually clogged. You can avoid the situation. As a result, it is not necessary to frequently perform duct cleaning to remove clogging in the duct 22, and the magnetic tape 1 can be discarded without delay.

FIG. 5 is a schematic cross-sectional view showing an air tube of a tape discarding device in a second embodiment of the band-shaped substance discarding device according to the present invention. In the second embodiment, the first
The same parts as those in the embodiment are designated by the same reference numerals and the description thereof will be omitted.

In the tape discarding device of the second embodiment, instead of the orifice 25 of the first embodiment, an air tube 21 as a duct is connected with a small diameter duct 30 as a small diameter portion. A cutter 32 is installed on an inner peripheral edge of a boundary step portion 31 between the small diameter duct 21 and the small diameter duct 30. Here, the inner diameter d of the small diameter duct 30 is formed smaller than the inner diameter D of the air tube (d <D).

In this embodiment, the flow rate of the air sucked by the vacuum pump 24 increases in the small diameter duct 30.
The long magnetic tape 1 to be discarded rides on the air flow, comes into contact with the cutter 32 of the boundary step 31, and is cut short. The waste magnetic tape 1 cut into short pieces is collected in the air filter 22. Therefore, also in the second embodiment, as in the first embodiment, the air tube of the magnetic tape 1 to be discarded can be prevented from clogging, and the magnetic tape 1 can be discarded without delay.

In each of the above embodiments, the case where the magnetic tape 1 on the starting end side of the pancake 3 is discarded is described, but the case where the magnetic tape 1 on the end side is discarded may be used.
When discarding the magnetic tape 1 on the end side, the tape discarding device 12 does not need to be combined with the suction unit 11, and it is sufficient if it exists independently.

[0028]

As described above, according to the band-shaped material discarding apparatus of the present invention, clogging of the waste band-shaped material in the duct can be prevented, and the work of discarding the band-shaped material can be carried out smoothly.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a tape tip pulling device to which a tape discarding device, which is a first embodiment of a band-shaped substance discarding device according to the present invention, is applied.

FIG. 2 is a front view showing the tape leading end drawing device of FIG. 1 together with a tape cutting and joining device.

FIG. 3 is a perspective view showing an orifice with a cutter in FIG. 1.

FIG. 4 is an operation diagram showing a work of collecting a waste tape by the tape tip drawing device of FIG. 1.

FIG. 5 is a schematic cross-sectional view showing an air tube of a tape discarding device in a second embodiment of the strip discarding device according to the present invention.

FIG. 6 is a schematic cross-sectional view showing a flow velocity state of air in a duct in a conventional band disposal device.

[Explanation of symbols]

 1 Magnetic Tape 3 Pancake 10 Tape Drawer 12 Tape Disposer 21 Air Tube 22 Air Filter 23 Solenoid Valve 24 Vacuum Pump 25 Orifice 26 Cutter 30 Small Diameter Duct 31 Boundary Step 32 Cutter

Claims (3)

[Claims] 1. A belt-shaped material discarding device for sucking and discarding a belt-shaped material through a duct, wherein a small diameter portion is formed in the duct, and a cutter is disposed on the inner peripheral edge of the small diameter portion. A band-disposing device which is capable of cutting the band. 2. The strip-shaped material discarding apparatus according to claim 1, wherein the small-diameter portion is an orifice, and a cutter is arranged on the inner peripheral edge of the orifice. 3. The band discarding device according to claim 1, wherein the small-diameter portion is a small-diameter duct, and a cutter is arranged at a boundary step between the small-diameter duct and the duct.