Winding device and cutoff detection method

Patent metadata

Field	Value
Publication number	US-10112736-B2
Application number	US-201615384261-A
Country	US
Kind code	B2
Filing date	Dec 19, 2016
Priority date	Jan 28, 2016
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

A winding device includes a first roller that winds label roll paper that is composed with a continues base sheet, a plurality of labels and a marginal portion, a second roller that winds the marginal portion peeled off the label roll paper, a drive part that generates a driving force for the second roller to rotate, a drive transmission control part that is provided between the drive part and the second roller such that the driving force is transmitted to the second roller from the driving part, and stops transmitting the driving force to the second roller if a load placed on the second roller exceeds a prescribed load, a detection part that detects a rotation of the second roller, and a control part that determines a cutoff of the marginal portion based on the rotation of the second roller detected by the detection part.

First claim

What is claimed is:

1. A winding device, comprising:
a first roller that winds label roll paper, the label roll paper being composed with a continues base sheet, a plurality of labels and a marginal portion, the labels and the marginal portion, which surrounds the labels, being peelably attached on one side of the base sheet such that the labels and the marginal portion entirely covers the one side of the base sheet, the label roll paper being carried in a first carry direction by the first roller and wound on the first roller after the marginal portion is peeled off from the base sheet,
a second roller that carries the marginal portion peeled off from the base sheet in a second carry direction and winds the marginal portion,
a drive part that generates a driving force for the second roller to rotate,
a drive transmission control part that is configured to
be between the drive part and the second roller such that the driving force is transmitted to the second roller from the driving part,
stop transmitting the driving force to the second roller if a load placed on the second roller exceeds a prescribed load,
apply a predetermined tension to the marginal portion unless a cutoff the marginal portion occurs,

a detection part that detects a rotation of the second roller, and
a control part that determines the cutoff of the marginal portion based on the rotation of the second roller detected by the detection part, wherein
the control part determines whether or not the cutoff occurs while the drive part generates the driving force.

2. The winding device according to claim 1 , wherein
when the cutoff of the marginal portion is detected by the control part, the control part stops the rotation of the second roller.

3. The winding device according to claim 1 , further comprising:
one of a speaker and a display, wherein
when the cutoff of the marginal portion is detected by the control part, the control part either sounds alarms through the speaker or displays an alarm on the display.

4. The winding device according to claim 1 , wherein
the second roller includes a rotation shaft around which the second roller rotates,
the detection part is a sensor to monitor a rotation of the rotation shaft of the second roller, and
the control part determines the cutoff of the marginal portion when the rotation shaft of the second roller is detected rotating in a state where the first roller is stopped and the second roller is driven by the drive part.

5. The winding device according to claim 1 , wherein
the detection part is a sensor to monitor a rotation speed of the second roller, and
the control part determines the cutoff of the marginal portion if the rotation speed of the second roller monitored by the detection part exceeds a threshold value in a state where the second roller is driven by the drive part and the first roller is driven to wind the base sheet.

6. The winding device according to claim 1 , wherein
the detection part is a sensor to monitor a load current of the second roller, the load current being defined as a current that is applied to the drive part when the drive part rotates the second roller, and
the control part determines the cutoff of the marginal portion if the load current of the second roller monitored by the detection part does not exceed a threshold value in a state where the second roller is driven by the drive part and the first roller is driven to wind the base sheet.

7. The winding device according to claim 4 , wherein
the control part is configured to stop a rotation of the first roller and to measure time since the first roller stops, and initiates to determine the cutoff of the marginal portion after the time measured by the control part exceeds prescribed time.

8. The winding device according to claim 6 , wherein
the control part is configured to stop a rotation of the first roller and to measure time since the first roller stops, and initiates to determine the cutoff of the marginal portion after the time measured by the control part exceeds prescribed time.

9. The winding device according to claim 5 , wherein
the control part is configured to stop a rotation of the first roller and to measure time since the first roller stops, and initiates to determine the cutoff of the marginal portion after the time measured by the control part exceeds prescribed time.

10. The winding device according to claim 1 , wherein
the drive transmission control part is a torque limiter provided on a coupling part between the drive part and the rotation shaft of the second roller, the torque limiter functioning not to transmit the driving force to the second roller when a torque applied to the coupling part exceeds a threshold value.

11. A cutoff detection method for label roll paper using a winding device, the winding device comprising:
a first roller that winds label roll paper, the label roll paper being composed with a continues base sheet, a plurality of labels and a marginal portion, the labels and the marginal portion, which surrounds the labels, being peelably attached on one side of the base sheet such that the labels and the marginal portion entirely covers the one side of the base sheet, the label roll paper being carried in a first carry direction by the first roller and wound on the first roller after the marginal portion is peeled off from the base sheet,
a second roller that carries the marginal portion peeled off from the base sheet in a second carry direction and winds the marginal portion,
a drive part that generates a driving force,
a control part that controls rotations of the first and second rollers, the second roller being driven by the driving force,
a drive transmission control part that is configured to transmit the driving force to the second roller if a load placed on the second roller caused by the driving force is equal to or less than a prescribed load, and to stop transmitting the driving force to the second roller if the load placed on the second roller exceeds the prescribed load, and to apply a predetermined tension to the marginal portion unless a cutoff of the marginal portion occurs, and
a detection part that detects a rotation status of the second roller,
the cutoff detection method, comprising:
rotating the first and second rollers;
stopping a rotation of the first roller when a predetermined tension of the label roll paper is detected;
waiting for a predetermined period;
monitoring the status of the second roller in a state where the driving force is generated by the driving part but the driving force is not transmitted to the second roller due to the drive transmission control part, and determining that there is the cutoff of the marginal portion only if a torque, which is equal to or less than a predetermined load torque preset by the drive transmission control part, is present at the second roller in a direction opposite to the second carry direction; and
causing the drive part not to generate the driving force when the cutoff is determined, or continuing to cause the drive part to generate the driving force when the cutoff is not determined.

12. The cutoff detection method of claim 11 , further comprising
measuring time since the first roller stops, wherein
the monitoring the status of the second roller is initiated after the measured time exceeds prescribed time.

13. The winding device according to claim 1 , further comprising:
a peeling part for peeling the marginal portion off the base sheet, is positioned at an upstream side from the first roller in the first direction and an upstream side from the second roller in the second direction, wherein
the peeling

Assignees

• Oki Data Kk

Inventors

• Kanno shunichi

Classifications

• B65H2701/192

  Labels · CPC title

• B65H18/103

  Reel-to-reel type web winding and unwinding mechanisms · CPC title

• B31D1/02 Primary

  the articles being labels or tags · CPC title

• B65H26/00

  Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms (safety devices in general F16P; investigating chemical or physical properties of materials in general G01N; indicating devices in general G08B) · CPC title

• B65H26/025

  responsive to web breakage · CPC title