Cutting device

Patent metadata

Field	Value
Publication number	US-9511604-B2
Application number	US-201615079385-A
Country	US
Kind code	B2
Filing date	Mar 24, 2016
Priority date	Mar 31, 2015
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

A cutting device includes a receiving block configured such that an object to be cut is arranged thereon, a cutting blade that includes a blade portion, the cutting blade being configured to move between a separated position and a contact position via a clamping position, a first rotating member coupled with the cutting blade, the first rotating member being configured to cause the cutting blade to move from the separated position to the contact position via the clamping position, by the first rotating member rotating in a specified direction from a separated rotation position to a contact rotation position via a clamping rotation position, an elastic member provided on the first rotating member, a DC motor, and a second rotating member configured to rotate in accordance with rotation of the DC motor.

First claim

What is claimed is:

1. A cutting device comprising:
a receiving block configured such that an object to be cut is arranged thereon;
a cutting blade that includes a blade portion, the cutting blade being configured to move between a separated position and a contact position via a clamping position, the separated position being a position in which the blade portion is separated from the receiving block, the contact position being a position in which the blade portion is in contact with the receiving block, and the cutting blade being configured, when the cutting blade is in the clamping position, to clamp the object between the blade portion and the receiving block;
a first rotating member coupled with the cutting blade, the first rotating member being configured to cause the cutting blade to move from the separated position to the contact position via the clamping position, by the first rotating member rotating in a specified direction from a separated rotation position to a contact rotation position via a clamping rotation position;
an elastic member provided on the first rotating member;
a DC motor; and
a second rotating member configured to rotate in accordance with rotation of the DC motor, the second rotating member being configured to cause the first rotating member to rotate from the separated rotation position to the clamping rotation position by the second rotating member rotating in a first direction from an initial rotation position to a first intermediate rotation position while being in contact with the elastic member, and the second rotating member being configured to increase an amount of elastic deformation of the elastic member and urge the first rotating member in the specified direction by the second rotating member rotating in the first direction from the first intermediate rotation position while being in contact with the elastic member.

2. The cutting device according to claim 1 , wherein
the DC motor is configured to cause the second rotating member to rotate in the first direction by the DC motor rotating in a forward direction,
the DC motor is configured to cause the second rotating member to rotate in a second direction by the DC motor rotating in a reverse direction, the second direction being a direction opposite to the first direction,
the second rotating member is configured to rotate between a second intermediate rotation position and the initial rotation position, the second intermediate rotation position being positioned on an opposite side to the first intermediate rotation position with respect to the initial rotation position in a rotational direction of the second rotating member,
the second rotating member is configured to cause the first rotating member to rotate from the separated rotation position to the clamping rotation position by the second rotating member rotating in the second direction from the initial rotation position to the second intermediate rotation position in accordance with the rotation of the DC motor in the reverse direction, and
the second rotating member is configured to increase the amount of elastic deformation of the elastic member and urge the first rotating member in the specified direction by the second rotating member rotating in the second direction from the second intermediate rotation position while being in contact with the elastic member.

3. The cutting device according to claim 2 , wherein
the elastic member includes a coil portion, a first arm portion, and a second arm portion, the coil portion being supported by the first rotating member, the first arm portion extending from one end portion of the coil portion, the first arm portion being configured to come into contact with the second rotating member, the second arm portion extending from another end portion of the coil portion, and the second arm portion being configured to come into contact with the first rotating member, and
the second rotating member is configured to come into contact with the first arm portion at a position separated further from the coil portion when the second rotating member rotates in the first direction than when the second rotating member rotates in the second direction.

4. The cutting device according to claim 3 , wherein
when the second rotating member comes into contact with the first arm portion, a tangential direction in a rotation direction of the second rotating member is one of an acute angle and an obtuse angle with respect to an extending direction of the first arm portion.

5. The cutting device according to claim 2 , further comprising:
a detection portion configured to detect whether the second rotating member is in a specific rotation position;
a first determination portion configured to determine whether the second rotating member is in the first intermediate rotation position, based on a detection result of the detection portion;
a second determination portion configured to determine whether the second rotating member is in the second intermediate rotation position, based on a detection result of the detection portion;
a first acquisition portion configured to acquire first information, the first information indicating a degree of urging of the first rotating member by the elastic member when the second rotating member rotates in the first direction from the first intermediate rotation position;
a second acquisition portion configured to acquire second information, the second information indicating a degree of urging of the first rotating member by the elastic member when the second rotating member rotates in the second direction from the second intermediate rotation position;
a first rotation control portion configured to, in response to determining by the first determination portion that the second rotating member is in the first intermediate rotation position, control and drive the DC motor to cause the second rotating member to rotate in the first direction by a movement amount corresponding to the first information acquired by the first acquisition portion; and
a second rotation control portion configured to, in response to determining by the second determination portion that the second rotating member is in the second intermediate rotation position, control and drive the DC motor to cause the second rotating member to rotate in the second direction by a movement amount corresponding to the second information acquired by the second acquisition portion.

6. The cutting device according to claim 5 , further comprising:
an input portion configured to receive an input of object to be cut information, the object to be cut information indicating a type of the object to be cut,
wherein
the first acquisition portion is configured to acquire, from a first storage portion storing the object to be cut information and the first information in association with each other, the first information corresponding to the object to be cut information input via the input portion, and
the second acquisition portion is configured to acquire, from a second storage portion storing the object to be cut information and the second information in association with each other, the second information corresponding to the object to be cut information input via the input portion.

7. The cutting device according to claim 5 , wherein
the first information is a time period over which the second rotating member rotates in the first direction from the first intermediate rotation position,
the second information is a time period over which the second rotating member rotates in the second direction from the second intermediate rotation position,
the first rotation control portion is configured to, in response to determining by the first determination portion that the second rotating member is in the first intermediate rot

Assignees

• Brother Ind Ltd

Inventors

• Osuka Misato
• Kano Yasutoshi
• Takahashi Kohei

Classifications

• B26D1/065

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

• B26D7/025

  acting upon planar surfaces (B26D7/04 takes precedence) · CPC title

• B26D2001/0066

  having shearing means, e.g. shearing blades, abutting blades · CPC title

• B41J11/703

  Cutting of tape · CPC title

• B26D3/08

  Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising · CPC title