Cutting device capable of appropriately performing cutting operations even when one of first and second detecting portions does not normally operate

Patent metadata

Field	Value
Publication number	US-11673284-B2
Application number	US-202016926443-A
Country	US
Kind code	B2
Filing date	Jul 10, 2020
Priority date	Jul 16, 2019
Publication date	Jun 13, 2023
Grant date	Jun 13, 2023

Abstract

A cutting device includes: a movable blade; a moving mechanism moving the movable blade and having a first mechanism portion movable between a first operating position and a first non-operating position and a second mechanism portion movable between a second operating position and a second non-operating position; a first detecting portion and a second detecting portion detecting positions of the first mechanism portion and the second mechanism portion; and a controller configured to perform: setting, when one of the first detecting portion and the second detecting portion detects abnormally, updated positions of the first operating position and the second operating position or the first non-operating position and the second non-operating position. The updated positions are set based on detection result of another of the first detecting portion and the second detecting portion and are new start points of movement of the first mechanism portion and the second mechanism portion.

First claim

What is claimed is:

1. A cutting device comprising:
a movable blade configured to cut at least a portion of an object;
a moving mechanism configured to move the movable blade, the moving mechanism comprising:
a first mechanism portion reciprocally movable between a first operating position and a first non-operating position; and
a second mechanism portion reciprocally movable between a second operating position and a second non-operating position;

a driver configured to be driven to move the moving mechanism;
a first detecting portion for performing detection of the first operating position of the first mechanism portion and the second operating position of the second mechanism portion;
a second detecting portion for performing detection of the first non-operating position of the first mechanism portion and the second non-operating position of the second mechanism portion;
a storage medium; and
a controller configured to perform processing including:
detecting first data indicative of whether the first detecting portion is operating normally or abnormally;
detecting second data indicative of whether the second detecting portion is operating normally or abnormally;
(a) setting, when one of (i) the first detecting portion is operating abnormally and (ii) the second detecting portion is operating abnormally, an updated position of each of one of (i) the first operating position and the second operating position and (ii) the first non-operating position and the second non-operating position,
the updated position being set based on a detection result of the remaining one of the first detecting portion and the second detecting portion that is operating normally and the updated position being a new start point of reciprocating movement of the first mechanism portion and the second mechanism portion in place of the each of the one of (i) the first operating position and the second operating position and (ii) the first non-operating position and the second non-operating position; and
(b) storing the updated position set in the (a) setting in the storage medium.

2. The cutting device according to claim 1 , wherein the movable blade comprises a first movable blade and a second movable blade,
wherein the first mechanism portion comprises the first movable blade, the first movable blade being configured to be moved forward from the first non-operating position of the first mechanism portion toward the first operating position of the first mechanism portion a first prescribed amount to cut at least a portion of the object, and
wherein the second mechanism portion comprises the second movable blade, the second movable blade being configured to move forward from the second non-operating position of the second mechanism portion toward the second operating position of the second mechanism portion a second prescribed amount to cut at least a portion of the object.

3. The cutting device according to claim 2 , wherein, in the (a) setting, the controller is configured to perform:
when the first detecting portion is operating abnormally,
(a1) setting a position of the first movable blade moved forward from the first non-operating position the first prescribed amount by the driver as a first updated operating position, the first updated operating position being the updated position of the first mechanism portion used in place of the first operating position; and
(a2) setting a position of the second movable blade moved forward from the second non-operating position the second prescribed amount by the driver as a second updated operating position, the second updated operating position being the updated position of the second mechanism portion used in place of the second operating position.

4. The cutting device according to claim 2 , wherein, in the (a) setting, the controller is configured to perform:
when the second detecting portion is operating abnormally,
(a3) setting a position of the first movable blade moved reverse from the first operating position the first prescribed amount as a first updated non-operating position, the first updated non-operating position being the updated position of the first mechanism portion used in place of the first non-operating position; and
(a4) setting a position of the second movable blade moved reverse from the second operating position the second prescribed amount as a second updated non-operating position, the second updated non-operating position being the updated position of the second mechanism portion used in place of the second non-operating position.

5. The cutting device according to claim 2 , wherein the driver comprises a motor rotatable in a forward direction and a reverse direction to move the first mechanism portion and the second mechanism portion, and
wherein, in the (a) setting, the controller uses the first prescribed amount and the second prescribed amount to control a rotation amount or the number of rotations of the motor.

6. The cutting device according to claim 5 , wherein the driver further comprises a rotating member rotatable in association with rotation of the motor, the rotating member being configured to move the first mechanism portion forward in accordance with the rotation of the motor in the forward direction, the rotating member being configured to move the second mechanism portion forward in accordance with the rotation of the motor in the reverse direction,
wherein the first detecting portion is configured to perform detection of the first operating position of the first mechanism portion by detecting that the rotating member is in a preset first angular position and the second operating position of the second mechanism portion by detecting that the rotating member is in a preset second angular position, and
wherein the second detecting portion is configured to perform detection of the first non-operating position of the first mechanism portion by detecting that the rotating member is in a preset third angular position and the second non-operating position of the second mechanism portion by detecting that the rotating member is in a preset fourth angular position.

7. The cutting device according to claim 1 , wherein, in the (a) setting, the controller is configured to perform:
when one of the first detecting portion and the second detecting portion performs detection in an abnormal position,
(a5) calculating an offset amount and an offset direction between a normal position detected by the remaining one of the first detecting portion and the second detecting portion that is operating normally the abnormal position; and
(a6) setting the updated position based on the offset position and the offset direction calculated in the (a5) calculating.

8. The cutting device of claim 1 , wherein:
the first data includes a first flag, and
the second data includes a second flag.

9. The cutting device of claim 8 , wherein:
the first flag includes a first value, of the first flag, to indicate that the first detecting portion is operating normally and a second value, of the first flag, to indicate that the first detecting portion is operating abnormally; and
the second flag includes a first value, of the second flag, to indicate that the second detecting portion is operating normally and a second value, of the second flag, to indicate that the second detecting portion is operating abnormally.

10. The cutting device of claim 1 ,
wherein in response to at least one of a first condition and a second condition being met, the controller determines that the first detecting portion is operating abnormally, the first condition being met when the first detecting portion does not detect the first mechanism portion even though the controller has perfor

Assignees

• Brother Ind Ltd

Inventors

• Mizutani Hiromitsu

Classifications

• B26D2007/005

  cutters, e.g. guillotines, used in a label maker or printer · CPC title

• B41J11/703

  Cutting of tape · CPC title

• B26D1/305 Primary

  for thin material, e.g. for sheets, strips or the like · CPC title

• B41J11/663 Primary

  Controlling cutting, cutting resulting in special shapes of the cutting line, e.g. controlling cutting positions, e.g. for cutting in the immediate vicinity of a printed image · CPC title

• B41J11/706

  using a cutting tool mounted on a reciprocating carrier · CPC title