Cutting device and printer

Patent metadata

Field	Value
Publication number	US-11485153-B2
Application number	US-202117162260-A
Country	US
Kind code	B2
Filing date	Jan 29, 2021
Priority date	Jan 30, 2020
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

A cutting device, having a full-cutting assembly, a half-cutting assembly, and a cam, is provided. The full-cutting assembly includes a first cutting blade and a facing part to cut a tape fully through in a direction of thickness of the tape by rotating a first arm about a first shaft. The half-cutting assembly includes a second cutting blade and a supporting base to cut the tape partly in the direction of thickness by rotating a second arm about a second shaft. The cam is rotatable bidirectionally about a third shaft and has a cam face, on which a first pressing part to press the first arm and a second pressing part to press the second arm are arranged. A distance between the cam face and the second arm is smaller than or equal to a distance between the cam face and the first arm.

First claim

What is claimed is:

1. A cutting device, comprising:
a full-cutting assembly, including a first cutting blade and a facing part that face each other in a first direction, the first cutting blade and the facing part extending in a second direction, the second direction intersecting with the first direction, the first cutting blade being coupled with a first arm, the first arm being rotatable about a first shaft extending in a third direction, the third direction intersecting with the first direction and the second direction, the full-cutting assembly being configured to cut a tape between the first cutting blade and the facing part fully through in a direction of thickness of the tape by moving the first arm to rotate about the first shaft;
a half-cutting assembly, including a second cutting blade and a supporting base that face each other in the first direction, the second cutting blade and the supporting base extending in the second direction, the second cutting blade being coupled with a second arm, the second arm being rotatable about a second shaft extending in the third direction, the half-cutting assembly being configured to cut the tape between the second cutting blade and the supporting base partly in the direction of thickness by moving the second arm to rotate about the second shaft; and
a cam configured to rotate bidirectionally normally and reversely in directions opposite to each other about a third shaft, the third shaft extending in a third direction, the cam having a cam face, on which a first pressing part configured to press the first arm to rotate about the first shaft when the cam rotates normally and a second pressing part configured to press the second arm to rotate about the second shaft when the cam rotates reversely are arranged,
wherein a distance between the cam face and the second arm in the third direction is smaller than or equal to a distance between the cam face and the first arm in the third direction.

2. The cutting device according to claim 1 ,
wherein the facing part includes a blade, and
wherein the full-cutting assembly is configured to cut the tape fully through in the direction of thickness by moving the first arm to rotate about the first shaft and causing the first cutting blade and the facing part to overlap each other in the third direction.

3. The cutting device according to claim 1 , further comprising a motor configured to cause the cam to rotate normally and reversely.

4. The cutting device according to claim 3 , further comprising a controller configured to control operations of the motor according to an amount of a current flowing through the motor.

5. The cutting device according to claim 3 , wherein the motor includes a rotation shaft extending in the first direction.

6. The cutting device according to claim 3 , wherein the motor is located at a position to overlap the third shaft in the second direction.

7. The cutting device according to claim 1 , comprising:
a fixing part extending in the first direction; and
a frame, to which the fixing part is fixed,
wherein the facing part extends on one side of the fixing part in the second direction from a position different from either end of the facing part in the first direction.

8. The cutting device according to claim 1 , wherein the second pressing part is configured to contact the second arm.

9. The cutting device according to claim 8 ,
wherein the second pressing part includes a groove formed on the cam face; and
wherein the second arm is provided with a pin extending in the third direction, the pin being inserted in the groove.

10. A printer, comprising:
a printing device configured to print an image on a tape;
a conveyer configured to convey the tape with the image printed thereon; and
a cutting device, comprising:
a full-cutting assembly, including a first cutting blade and a facing part, the first cutting blade and the facing part being configured to face each other in a first direction across the tape conveyed to a position between the first cutting blade and the facing part by the conveyer, the first cutting blade and the facing part extending in a second direction, the second direction intersecting with the first direction, the first cutting blade being coupled with a first arm, the first arm being rotatable about a first shaft extending in a third direction, the third direction intersecting with the first direction and the second direction, the full-cutting assembly being configured to cut the tape at the position between the first cutting blade and the facing part fully through in a direction of thickness of the tape by moving the first arm to rotate about the first shaft;
a half-cutting assembly, including a second cutting blade and a supporting base, the second cutting blade and the supporting base being configured to face each other in the first direction across the tape conveyed to a position between the second cutting blade and the supporting base by the conveyer, the second cutting blade and the supporting base extending in the second direction, the second cutting blade being coupled with a second arm, the second arm being rotatable about a second shaft extending in the third direction, the half-cutting assembly being configured to cut the tape at the position between the second cutting blade and the supporting base partly in the direction of thickness by moving the second arm to rotate about the second shaft; and
a cam configured to rotate bidirectionally normally and reversely in directions opposite to each other about a third shaft, the third shaft extending in a third direction, the cam having a cam face, on which a first pressing part configured to press the first arm to rotate about the first shaft when the cam rotates normally and a second pressing part configured to press the second arm to rotate about the second shaft when the cam rotates reversely are arranged,

wherein a distance between the cam face and the second arm in the third direction is smaller than or equal to a distance between the cam face and the first arm in the third direction.

Assignees

• Brother Ind Ltd

Inventors

• Nakamura Yuya
• Iwamoto Masashi
• Kanda Ryuichi
• Tanizaki Masashi

Classifications

• B41J2/32

  using thermal heads · CPC title

• B41J11/666

  Cutting partly, e.g. cutting only the uppermost layer of a multiple-layer printing material · CPC title

• B41J11/703 Primary

  Cutting of tape · CPC title

• B41J3/4075

  Tape printers; Label printers · CPC title