JP3211047B2 - Strip disposal equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for discarding strips such as magnetic tapes after cutting them.

[0002]

2. Description of the Related Art In a pancake in which a band such as a magnetic tape is wound in a coil shape, the band at the beginning and end of the pancake is not used. After cutting, the band is sucked by a suction machine through a duct and discarded. You.

[0003]

However, the strip to be discarded is long, and as shown in FIG. 6, the air flow (velocity V) in the duct a caused 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, a part of the strip that is being discarded by suction adheres to the inner wall surface of the duct a due to the flow of static electricity or air, and the strip that has been sucked thereafter clings to the attached strip. Then, there is a possibility that the inside of the duct a is clogged with the band-shaped material. Therefore, in the conventional strip disposal apparatus, it is necessary to frequently clean the inside of the duct a to remove the strip entangled in the duct a.

The present invention has been made in consideration of the above circumstances, and provides a strip disposal apparatus capable of preventing a strip from being clogged in a duct and performing a strip disposal operation without delay. The purpose is to:

[0005]

According to a first aspect of the present invention, there is provided a strip disposal apparatus for sucking and discarding a strip through a duct, wherein a small-diameter portion is formed in the duct, and the small-diameter portion is formed in the duct. A cutter is arranged on the inner peripheral edge so that the strip can be cut by the 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 disposed on an 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 provided at a boundary between the small-diameter duct and the duct.

[0008]

Therefore, according to the strip disposal device according to the first, second and third aspects, when the strip to be discarded is sucked and flows through the duct, the flow velocity at the small diameter portion (orifice, small diameter duct) is increased. Since it increases, the strip is cut short in contact with the cutter on the inner peripheral edge of the small diameter portion. For this reason, it is possible to avoid a situation in which a long band-shaped object adheres to the inner wall surface of the duct in the duct, and another long band-shaped object clings to the attached band-shaped object, and the inside of 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 strip can be performed without delay.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view, partially cut away, of a tape leading end device to which a tape disposal device according to a first embodiment of the strip disposal device according to the present invention is applied. FIG. 2 is a front view showing the tape leading end pulling 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. FIG. 4 is an operation diagram showing a collection operation of the waste tape by the tape leading edge pull-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 a metal powder as a solid powder to a base material such as polyethylene, polyethylene terephthalate, or polyamide, and is easily cut just by contacting a cutter 26 described later. . The hub 2 of the pancake 3 is detachably mounted on the delivery shaft 4.

The tape leading-out device 10 includes a suction unit 11 and a tape discarding device 12 as a strip-shaped material discarding device.

Suction unit 1 of tape leading end device 10
When the pancake 3 is mounted on the delivery shaft 4, the gripper 1 pulls out 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 a tape cutting and joining device 5, and unnecessary magnetic tapes 1 of the pulled out magnetic tape 1 are separated by a cutter ( When the tape is cut by a not shown), the tape discarding device 12 of the tape leading end extracting device 10 collects and discards the unnecessary magnetic tape 1.

In the tape cutting and joining apparatus 5, the suction unit 11 of the tape tip pulling-out device 10 pinches and pulls out the tip of the magnetic tape 1 from the pancake 3 mounted on the delivery shaft 4, and reaches the tape suction block 6. When conveyed, the magnetic tape 1 is attracted to the tape suction block 6, and the magnetic tape 1 is cut by the cutter (not shown). The magnetic tape is joined by a splicer 7. Thereby, the tip of the magnetic tape 1 of the pancake 3 attached to the delivery shaft 4 is connected to the other magnetic tape 1. Reference numeral 8 in FIG. 2 indicates a guide roller.

The suction unit 11 has a unit housing 13, and is configured to be able to move forward and backward in the direction of arrow A in FIG. As shown in FIG. 1, two suction holes 14A and 14B are formed in the unit housing 13 in parallel, and a suction hole 14C communicating the 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 for guiding the magnetic tape 1 into the suction hole 14A is fitted into the suction hole 14A.

The rubber cushion 16 is accommodated 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
Is 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 (the direction of arrow B) of the suction hole 14A via the piston rod 18. The rubber cushion 16 reaches the position indicated by the two-dot chain line by the forward movement,
The magnetic tape 1 sucked (described later) from the inside of 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 discarding device 12 includes an air tube 21 as a duct, an air filter 22 and a solenoid valve 23.
Further, 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 vacuum pump 24 and solenoid valve 23
Of the suction unit 11 by the opening operation of
The inside of 4B and 14C is set to a negative pressure. Due to this negative pressure, the leading end of the magnetic tape 1 hanging from the pancake 3 is pulled through the suction pipe 15 into the suction holes 14A, 14C and 1C.
It is sucked into 4B. Further, when the magnetic tape 1 sucked and held 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. 4B), the tape discarding device 12 The cut and discarded magnetic tape 1 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 short by an orifice 25. That is, the orifice 25 is
And a cutter 26 is provided on the inner peripheral edge thereof as shown in FIG. The flow of the air sucked by the vacuum pump 24 and flowing through 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 and becomes turbulent. . Therefore, when the discarded magnetic tape 1 tries to adhere to the inner wall surface of the air tube 21 by riding on the flow of the air, it 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 (2), when the pancake 3 is mounted on 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 disposal device 12 is turned ON, and the electromagnetic valve 23
Is opened, the suction holes 14A, 1
The inside of 4B and 14C is set to a negative pressure. Suction unit 1
When the suction unit 1 approaches the pancake 3, the suction unit 11 stops moving forward, and during this time, the suction hole 14
The leading end of the magnetic tape 1 in the pancake 3 is sucked into A, 14B and 14C.

At the stage when the magnetic tape 1 is sucked up to the suction hole 14C of the suction unit 11, as shown in FIGS. 1 and 4 (A), the air cylinder device 17 operates to move the rubber cushion 16 forward. The rubber cushion 16 clamps the magnetic tape 1 between the rubber cushion 16 and the wall surface of the suction hole 14A. At this time, the vacuum pump 24 is simultaneously turned off, the solenoid valve 23 is closed, and the negative pressure action by the tape disposal device 12 is released.

After the magnetic tape 1 is sandwiched by the rubber cushion 16 as described above, the suction unit 11 retreats away from the pancake 3, and the magnetic tape 1 is pulled out from the pancake 3. Suction unit 11
Retreats to a position below the tape cutting and joining device 5 shown in FIG. 2, at which position the magnetic tape 1 of the pancake 3 sandwiched by the suction unit 11 is attracted to the tape suction block 6 of the tape cutting and joining device 5. The tape is cut by a cutter (not shown) of a tape cutting and joining device 5 and joined to another magnetic tape 1 by a splicing tape by a splicer 7.

The magnetic tape 1 to be discarded as described above is supplied to the vacuum pump 24 in the tape discarding device 12.
4 and the opening operation of the solenoid valve 23, FIG.
Suction is performed as in (B) and (C). The magnetic tape 1 to be discarded sucked by the tape discarding device 12 flows through the air tube 21 while the cutter 26 of the orifice 25
And is collected in the air filter 22.

According to the above embodiment, when the discarded magnetic tape 1 is sucked and flows through the duct 21, the flow velocity of the air sucked by the orifice 25 increases. Inner peripheral cutter 26
And is cut short. For this reason, the long magnetic tape 1 adheres to the inner wall surface of the duct in the duct 22, and another long magnetic tape 1 sticks to the attached magnetic tape 1, and the inside of the duct 22 gradually becomes clogged. Things can be avoided. As a result, there is no need to frequently clean the duct in order to remove the clogging in the duct 22, and the magnetic tape 1 can be discarded without delay.

FIG. 5 is a schematic sectional view showing an air tube of a tape disposal device in a second embodiment of the strip disposal device according to the present invention. In the second embodiment, the first
The same parts as in the embodiment are denoted by the same reference numerals, and the description is omitted.

In the tape discarding apparatus according to the second embodiment, a small-diameter duct 30 as a small-diameter portion is connected to an air tube 21 as a duct instead of the orifice 25 in the first embodiment. A cutter 32 is provided 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 (d <D) than the inner diameter D of the air tube.

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

In both of the above embodiments, the case where the magnetic tape 1 at the start end of the pancake 3 is discarded has been described, but the magnetic tape 1 at the end side may be discarded.
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, but only needs to be present independently.

[0028]

As described above, according to the strip disposal apparatus according to the present invention, the waste strip can be prevented from being clogged in the duct, and the strip can be discarded without delay.

[Brief description of the drawings]

FIG. 1 is a front view, partially cut away, of a tape leading end device to which a tape disposal device according to a first embodiment of the strip disposal device according to the present invention is applied.

FIG. 2 is a front view showing the tape leading end pulling 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 collection operation of the waste tape by the tape leading-edge extracting device of FIG. 1;

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic tape 3 Pancake 10 Tape drawer 12 Tape discarding device 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

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65H 19/20 G11B 5/84

Claims (3)

(57) [Claims] An apparatus for discarding a strip by sucking the strip through a duct, forming a small-diameter portion in the duct, disposing a cutter on the inner peripheral edge of the small-diameter portion, and A strip disposal device, wherein the strip can be cut. 2. The apparatus according to claim 1, wherein the small diameter portion is an orifice, and a cutter is provided on an inner peripheral edge of the orifice. 3. The strip-shaped waste disposal apparatus according to claim 1, wherein the small-diameter portion is a small-diameter duct, and a cutter is provided at a boundary between the small-diameter duct and the duct.