JPH0873092A - Slitter - Google Patents

Abstract

PURPOSE: To suppress the damage to the min. by automatically suspending operation, when slack and breaking of a tape are generated. CONSTITUTION: A sensor 50 for detecting that one among a plurality of tapes 2 which are guided in a parallel arrangement state on the guide rollers 22, 32, 41, and 42 displaces downward from the proper traveling position in the vicinity of each guide roller is arranged, and a control means 60 for suspending the traveling of an original cloth 1 and the tape 2 by receiving the detection signal supplied from the sensor 50 is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter for cutting a roll of tape into the width of a product and winding it up to complete a plurality of hub-wound tapes.

[0002]

2. Description of the Related Art Generally, a tape such as a magnetic tape is intermediately manufactured as a large product corresponding to a plurality of final products (hereinafter referred to as a raw material), and then cut into a predetermined width to finally obtain a final product. Therefore, a so-called slitter (tape cutting device) that automatically cuts and winds the tape is installed in a magnetic tape manufacturing factory or the like. This slitter has an unwinding part for unwinding an original web of tape, a knife part for continuously cutting the original web unwound from the unwinding part and running at a predetermined position in the width direction, and the knife part A winding unit for winding the tape obtained by cutting the original fabric, and usually a guide roller for guiding a plurality of the tapes in parallel between the knife unit and the winding unit.

By the way, in this type of slitter, the tape may sag or cut abnormally depending on the condition of the tape or the condition of the winding hub, guide roller, etc. In that case, the operation is stopped and necessary. It is necessary to carry out recovery work. However, the conventional slitter does not have a function of automatically detecting such slack or cutting of the tape.

[0004]

Therefore, in the conventional slitter, it is necessary for a person to stop the operation when an abnormal sagging or cutting of the tape occurs, and it is difficult for the person to notice and the tape becomes complicated. Therefore, the recovery work sometimes took a lot of time. Also, if you try to minimize the recovery work by surely detecting the slack of the tape early,
People have to constantly monitor the condition of the tape,
In any case, this has led to an increase in human production costs at the tape manufacturing factory.

Therefore, an object of the present invention is to provide a slitter capable of automatically stopping when slackening or cutting of the tape occurs to minimize damage.

[0006]

In order to achieve the above-mentioned object, a slitter according to a first aspect of the present invention comprises an unwinding part for feeding out an original fabric of a tape and the original fabric which is fed out from the unwinding part and runs. A knife portion that continuously cuts at a predetermined position in the width direction, and a winding portion that winds the tape obtained by cutting the original fabric by the knife portion, and is provided between the knife portion and the winding portion. A slitter having a guide roller for guiding a plurality of the tapes in parallel, and a sensor for detecting that any of the plurality of tapes has been displaced from an appropriate traveling position in the vicinity of the guide roller, A slitter comprising control means for stopping the traveling of the original fabric and the tape in response to a detection signal from the sensor.

In the slitter according to a second aspect of the present invention, the sensor is disposed on one side in the vicinity of the guide roller and emits a light beam to a position traversing under the plurality of tapes, and the vicinity of the guide roller. And a light-receiving element that receives light rays emitted by this light-emitting element, and any of the plurality of tapes displaced below the proper traveling position near the guide roller blocks the light rays. The detection signal is output based on a change in the output of the light receiving element.

[0008]

In the present invention, when any one of the plurality of tapes guided in parallel by the guide roller is displaced from the proper running position in the vicinity of the guide roller, the sensor detects this and the detection signal from this sensor is detected. In response to this, the control means stops the traveling of the original fabric and the tape. Therefore, only abnormal slack or cutting of the tape can be detected reliably and early and the operation can be automatically stopped.
This is because even if there is a slight tape slack that is not abnormal, the tape is hardly displaced in the vicinity of the guide roller. It is possible to immediately detect only disconnection.

Further, the sensor is arranged on one side near the guide roller and emits a light beam to a position traversing under the plurality of tapes, and a light receiving element arranged on the other side near the guide roller and receives the light beam. In this case, this sensor can detect the slack of multiple tapes.
The simple stop enables the automatic stop.

[0010]

EXAMPLES The following configuration of the embodiment will be described with reference to an embodiment of the present invention with reference to the drawings. In the slitter of this embodiment, as shown in FIG. 1, an unwinding portion 10 that unwinds a raw material 1 of a magnetic tape and a raw material of a magnetic tape that is unwound from the unwinding portion 10 and travels a predetermined width direction. Knife section 20 for continuously cutting at a position and unwinding section 10
A winding unit 30 that winds the magnetic tape 2 that is unwound from the magnetic tape 2 and cut by the knife unit 20, a knife unit 20, and a winding unit 3.
0, a plurality of sensors 50 for detecting the slack of the magnetic tape 1, and the like.
The control unit 60 controls the operations of the unwinding unit 10 and the winding unit 30 based on the output of 0.

The unwinding section 10 is provided with a unwinding core 11 mounted thereon, and the unwinding core 11 is driven by a motor to rotate the unwinding core 11 as needed, thereby feeding out the original tape 1 of the magnetic tape.
The knife section 20 cuts the raw fabric 1 into a product width by a knife roller 21 to form a plurality of magnetic tapes 2. The plurality of magnetic tapes 2 are shown in FIG. 2 at the exit side of the magnetic tapes 2 after cutting. As shown, there are vertically provided guide rollers 22 for guiding in parallel. The take-up unit 30 is for taking up the take-up hubs 31 for the magnetic tapes 2 up and down, and rotating the take-up hubs 31 by a motor drive to take up each magnetic tape 2, and at the entrance side of the magnetic tapes 2. The upper and lower guide rollers 32 guide the plurality of magnetic tapes 2 in parallel. The guide portion 40 is such that guide rollers 41 and 42 for guiding a plurality of magnetic tapes 2 in parallel are arranged at the inlet side and the outlet side of the magnetic tape 2, respectively.

The sensor 50 includes the guide rollers 22, 3
2, 41, and 42, which are provided in the vicinity of each, respectively, and each include a light emitting element 51 and a light receiving element 52 as shown in FIG. The light emitting element 51 is arranged near the guide rollers in front of the magnetic tape 2 and emits a light beam to a position traversing below the plurality of magnetic tapes 2 guided by the guide rollers. The light rays emitted from the light emitting element 52 are arranged on the opposite side of the magnetic tape 2 in the vicinity of the guide rollers. Then, each sensor 50 outputs a detection signal based on the fact that any one of the plurality of tapes 2 displaced below the proper traveling position near each guide roller blocks the light beam and the output of the light receiving element 52 changes. It is output to the control means 60. The optical axes of the light emitting element 51 and the light receiving element 52 are L (for example, 50 m) from the center of the guide roll in the tape running direction as shown in FIG.
m) at a position apart from the center of the guide roll by H (for example, 20 mm).

The control means 60 is composed of, for example, a relay sequence circuit, and when the light beam of each sensor 50 is blocked during operation and the detection signal is input, a drive motor for the unwinding portion 10 and the winding portion 30 is driven. Shut off the power circuit of the
It also has a function of stopping the running of the magnetic tape 2 and holding the stopped state unless there is a reset operation or the like. In addition,
The mode of stopping the traveling of the original fabric 1 and the magnetic tape 2 is not only to cut off the power supply circuit of the drive motor, but also to provide a brake for forcibly stopping the rotation of the unwinding core 11 and the winding hub 31, It may be the control means 60 that shuts off the power supply circuit of the drive motor and activates this brake.

Operation of the Embodiment Next, the operation of the above-mentioned slitter will be described. In the above-mentioned structure, when the original fabric 1 of the magnetic tape is set in the unwinding unit 10 and the operation is started, the original fabric 1 is unwound by the unwinding unit 1.
It is continuously fed from 0, the raw material is continuously cut into the width of the product by the knife portion 20, and is sequentially wound around the hub by the winding portion 30 via the guide portion 40. In this way, if there is no problem such as cutting of the magnetic tape 1, the magnetic tape 1 of a predetermined length wound on the hub is completed.

By the time the magnetic tape 1 of a predetermined length is completed, the state of the magnetic tape 2 and the winding hub 3
1. When any one of the magnetic tapes 2 sags or cuts due to the condition of each guide roller or the like, the light beam of the sensor 50 near any of the guide rollers at the position where the slackness or the cutting occurs occurs in the magnetic tape 2. Is blocked by the downward displacement of the sheet, and the traveling of the original fabric 1 and the magnetic tape 2 is automatically stopped by the above-mentioned function of the control means 60.

At this time, the fact that the sensor 50 is arranged in the vicinity of each guide roller serves to prevent the automatic stopping operation from being caused by the slack of the magnetic tape 2 which is usually allowed. That is, even if there is a slight slack in the magnetic tape 2 which is not abnormal, the magnetic tape 2 is hardly displaced in the vicinity of each guide roller, so that the downward displacement of the magnetic tape 2 in the vicinity of each guide roller is detected. If so, only the abnormally large tape slack or cutting is immediately detected and the automatic stop is activated.

Therefore, according to the slitter of this embodiment,
Abnormal sagging or cutting of the magnetic tape 2 can be immediately detected automatically and the tape running can be automatically stopped even if no person is monitoring it, and damage and recovery work due to it can be minimized. You can Therefore, it is possible to reduce the human production cost and save labor in the magnetic tape manufacturing plant. Moreover, since each sensor 50 is configured to collectively detect the slack of the plurality of magnetic tapes 2 guided in parallel by the guide roller, for example, a sensor is provided for each magnetic tape 2. In comparison, the configuration is simple and has a small number of parts.

[0018]

According to the present invention, abnormal slack or cutting of a magnetic tape can be immediately detected automatically and the running of the tape can be automatically stopped even if the person is not monitoring it. It is possible to minimize the number of steps for restoration work. Therefore, it is possible to reduce the human production cost and save labor in the magnetic tape manufacturing plant. Moreover, in the case where the sensor is composed of a light emitting element which is arranged on one side in the vicinity of the guide roller and emits a light beam to a position traversing under the plurality of tapes, and a light receiving element which is arranged on the other side of the guide roller and receives the light beam. In addition, since the slack of a plurality of tapes and the like can be detected by this one sensor, the automatic stop can be performed with a simple configuration and the equipment cost of the slitter can be suppressed to a low level.

[Brief description of drawings]

FIG. 1 is a diagram showing an overall configuration of a slitter of the present invention.

FIG. 2 is a perspective view showing a main part of the slitter of the present invention.

FIG. 3 is a view on arrow A in FIG.

[Explanation of symbols]

 1 Tape original (magnetic tape original) 2 Tape (magnetic tape) 10 Unwinding section 20 Knife section 22, 32, 41, 42 Guide roller 30 Winding section 50 Sensor 60 Control means

Claims (2)

[Claims] 1. An unwinding part for unwinding an original fabric of a tape, a knife part for continuously cutting the original fabric unwound from the unwinding part and traveling at a predetermined position in the width direction, and this knife part. A slitter comprising: a winding unit that winds the tape obtained by cutting the original fabric; and a slitter having a guide roller that guides a plurality of the tapes in parallel between the knife unit and the winding unit. A sensor is installed to detect that one of the multiple tapes is displaced from the proper running position near the guide roller, and the running of the original fabric and the tape is stopped in response to a detection signal from this sensor. A slitter comprising a control means for controlling the slitter. 2. The light emitting element, which is arranged on one side near the guide roller and emits a light beam to a position traversing under the plurality of tapes, and the sensor is arranged on the other side near the guide roller. Of the plurality of tapes displaced below the proper running position in the vicinity of the guide roller to block the light beam and change the output of the light receiving device. The slitter according to claim 1, wherein the detection signal is output based on the above.