JPH10265109A - Lengthy sheet article taking-up device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a taking-up device to certainly take up a sheet article to be discharged. SOLUTION: A printed paper 2 discharged from a printer enters a taking-up device, when sagging of more than specified quantity is produced, sagging sensors 20, 21 detect the sagging and a motor 22 is driven. When the motor is driven, the printed paper is carried inside through a driving roller 13, and it is taken up on a taking-up core 11 to be driven by a motor 12. When tension of more than specified quantity is applied on the printed paper to be taken up, the motor 12 is cut off and taking-up is interrupted. In this constitution, when sagging is produced on the printed paper, the printed paper is carried by that quantity and taken up on the taking-up core, and accordingly, it is possible to certainly take up a sheet article by preventing excessive sagging or excessive tension.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long sheet winding device, and more particularly, to a long sheet winding device such as printing paper or film.

[0002]

2. Description of the Related Art Conventionally, when an image or a drawing is printed from a printer or the like, for example, the time required for printing is long, and the discharge speed of the printed paper is slow. When such low-speed printer output is performed,
Workers can monitor the output paper without monitoring it.
At present, they are engaged in other work or leave the workplace for a long time, such as returning home.

[0003] Even if the discharge speed is low, the discharge amount becomes large if the discharge speed is long, and the print paper is accumulated without knowing it. In some cases, the print paper is crumpled and cannot be used. There is. Particularly in digital photography, a color printer has the greatest weakness in that a color shift occurs when the paper is pulled with a small force.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve such problems, and an object of the present invention is to provide a winding device for reliably winding a long sheet discharged. And

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a sheet winding device for winding a long sheet-like material conveyed around a winding center.
First driving means for transporting the sheet material in the direction of the winding center, and second driving means for driving the winding core and winding the sheet material conveyed by the first driving means around the winding core And detecting means for detecting a slack of the sheet-like material conveyed by the first driving means, and when the predetermined amount of slack is detected, the first driving means is operated to take up the sheet-like material. The sheet is conveyed in the direction of the center, and the conveyed sheet is wound around the winding center by the second driving means.

In such a configuration, when a predetermined or more slack occurs in the sheet, the sheet is transported by the first drive system, and the transported sheet is transported by the second drive system. Since the sheet is wound, the sheet can be reliably wound without slack.

[0007] When a predetermined or more tension is applied to the sheet-like material, the winding of the sheet-like material by the second driving means is interrupted, so that it is possible to prevent unreasonable winding.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIGS. 1 and 2 show a winding device 10 according to an embodiment of the present invention. A winding center 11 disposed in the winding device 10 includes a motor 12.
And the like, via a drive mechanism (not shown). The long print paper 2 discharged from the discharge port 1a of the printer 1 passes through guides 10a and 10b, is conveyed through drive rollers 13, guide rollers 14, 15, and 16, and is taken up by a take-up center 11. Can be

A conveyance path for the printing paper 2, for example, a guide 10
The slack sensors 20 and 21 each composed of a feather-touch micro switch are arranged in a and 10b. The slack sensors 20 and 21 are turned on when the print paper 2 slackens by a predetermined amount or more as indicated by a dashed line, and supplies power to a motor 22 that drives the drive roller 13 via a drive mechanism (not shown).

The guide roller 15 is attached to one end of a detection lever 24 which can swing about a fulcrum 24a. A spring 25 having one end fixed to the main body of the winding device is attached to the other end 24b of the detection lever. Can be When the print paper 2 is excessively wound around the take-up center 11 and a predetermined or more tension is applied to the print paper, the detection lever 24 rotates counterclockwise against the urging force of the spring 25 around the fulcrum 24a. The micro switch 26 disposed below the detection lever 24 is turned off, the motor 12 is shut off, and the winding can be interrupted. The tension at which the motor 12 is shut off can be set by adjusting the tension of the spring 25 with the adjusting screw 27.

In this configuration, if the print paper 2 does not sag, the sag sensors 20 and 21 are used.
Is turned off, power is not supplied to the motor 22, and the drive roller 13 does not rotate, so that the printing paper 2 is not conveyed beyond the drive roller 13. In this state, when the print paper 2 is discharged from the printer by a predetermined amount or more, the print paper 2 starts to sag at the guides 10a and 10b at the entrance of the winding device as shown by the dashed line. The slack sensors 20 and 21 detect the slack according to the direction in which the slack occurs. When the slack sensor detects the slack of the printing paper, power is supplied to the motor 22, so that the driving roller 13 is driven by the motor 22, and the printing paper 2 is conveyed in the direction of the winding center along the guide. Become.

When the printing paper 2 is conveyed by the driving roller 13 by a predetermined amount, the slack sensors 20 and 21 do not detect the slack of the printing paper, so that the motor 22 is shut off and the further conveyance by the driving roller 13 is interrupted. Is done.

On the other hand, when the motor 22 operates,
When the print paper is conveyed through the detection lever 24, the detection lever 24
Is rotated clockwise about the fulcrum 24a, so that the micro switch 26 is operated to drive the motor 12, and the rotation of the take-up center 11 causes the printing paper 2 to take up the take-up center 1.
It will be rolled up by one.

When the print paper 2 is wound around the take-up center 11 more than it is sent from the drive roller 13, the detection lever 24 resists the urging force of the spring 25 about the fulcrum 24a. Then, the micro switch is turned off, the motor 12 is turned off, and the winding is stopped.

As described above, when the sagging occurs, the printing paper 2 is conveyed by that amount and wound up by the winding center.

Further, the drive roller 13 supports the weight of the paper, and has an effect of reducing the weight of the paper by half.

In the example described above, the microswitch is used as the slack sensor. However, other sensors such as a proximity switch and an optical sensor can be used. Further, instead of the microswitch 26, a proximity switch, an optical sensor, or the like that can detect the movement of the detection lever may be used.

Although only one slack sensor is provided at the center of each guide, two or more slack sensors may be provided as needed, for example, two at each end of the print paper in the width direction.
You may provide it individually.

[0020]

As described above, according to the present invention, when a long sheet-like object such as a printing paper is slackened, the sheet is conveyed only by that amount and wound around the winding center. It is possible to reliably take up the sheet-like material while preventing slack or excessive tension. In addition, since a pulling force exceeding the weight of the paper is never applied to the printer and is supported by the driving roller, the weight of the paper is reduced by half.

[Brief description of the drawings]

FIG. 1 is a side view of a winding device according to the present invention, partially cut away.

FIG. 2 is a side view of the winding device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printer 2 Printing paper 10 Winding device 11 Winding center 12, 22 Motor 20, 21 Slack sensor 24 Detection lever

Claims (2)

[Claims] 1. A sheet winding device that winds a conveyed long sheet-like material around a take-up center, a first drive unit that conveys the sheet-like material in the direction of the take-up center, and a take-up center. A second driving means for driving the sheet-shaped material conveyed by the first driving means and winding the sheet-shaped material conveyed by the first driving means, and a detecting means for detecting a slack of the sheet-shaped material conveyed by the first driving means. When a predetermined or more slack is detected, the first driving means is operated to convey the sheet-like material in the direction of the take-up center,
A long sheet-like material winding device, wherein the conveyed sheet-like material is wound around a winding center by a second driving means. 2. A device for detecting a tension applied to a sheet-like material wound around a winding center, wherein when a predetermined or more tension is applied to the sheet-like material, the sheet is driven by a second driving unit. The long sheet winding device according to claim 1, wherein the winding is interrupted.