Sheet cutting device

Patent metadata

Field	Value
Publication number	US-10173337-B2
Application number	US-201414336314-A
Country	US
Kind code	B2
Filing date	Jul 21, 2014
Priority date	Jul 22, 2013
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

A sheet cutting device includes a stage including a placement surface on which a to-be-cut sheet is placed; a strip-shaped fixed blade that is provided in one end portion of the stage; a movable blade that works together with the fixed blade to cut the sheet placed on the placement surface of the stage gradually from one end portion of the sheet to a different one end portion; and a support section that is located between the one end of the fixed blade and the other end in such a way as to be closer to a vertically downward side than the fixed blade and be closer to a vertically upward side than a bottom surface of a waste box placed closer to the vertically downward side than the fixed blade, to temporarily support part of a remnant generated after cutting by the fixed and movable blades.

First claim

What is claimed is:

1. A sheet cutting device, comprising:
a stage that includes a substantially horizontal and vertically upward placement surface on which a to-be-cut sheet is placed;
a strip-shaped fixed blade that is provided in one end portion of the stage;
a movable blade that approaches the fixed blade gradually from one end of the fixed blade to another end of the fixed blade, and works together with the fixed blade to cut the sheet placed on the placement surface of the stage gradually from the one end of the fixed blade to the another end of the fixed blade while generating a remnant; and
a support section that
is located vertically lower than the fixed blade and vertically upper than a bottom surface of a waste box placed vertically lower than the fixed blade, between the one end of the fixed blade and the another end of the fixed blade,
protrudes in a direction perpendicular to an outer surface of the stage adjacent to the placement surface of the stage, that contains the one end of the fixed blade and the another end of the fixed blade, and
includes a first side portion that is close to the one end of the fixed blade and a second side portion that is close to the another end of the fixed blade, wherein the second side portion is inclined toward the one end of the fixed blade, to temporarily support a portion of the remnant generated after cutting by the fixed and movable blades.

2. The sheet cutting device according to claim 1 , wherein the support section includes a flexible film member that changes posture between a support position where the support section takes a substantially horizontal posture to temporarily support the portion of the remnant, and a falling position where the support section takes a posture of being inclined vertically downwardly by a weight of the remnant to allow the remnant to fall into the waste box.

3. The sheet cutting device according to claim 2 , wherein the support section includes a plurality of film members that are provided substantially horizontally.

4. The sheet cutting device according to claim 1 , wherein
the support section includes: a plate-like member; and an attaching section that elastically holds the plate-like member in such a way that the plate-like member freely moves between a support position where the plate-like member takes a substantially horizontal posture to support part of the remnant, and a falling position where the plate-like member takes a posture of being inclined vertically downward to allow the remnant to fall into the waste box.

5. The sheet cutting device according to claim 1 , comprising:
an auxiliary section that supplementarily supports a portion of the sheet protruding from the stage after the sheet is placed on the placement surface of the stage; and
a scraping-off section that moves from a vertically upward side to a vertically downward side to scrape off a remnant adhering to the auxiliary section after the remnant is generated by cutting by the fixed and movable blades.

6. The sheet cutting device according to claim 5 , wherein the scraping-off section is fixed on a plane where the scraping-off section does not come in contact with the fixed blade of the movable blade.

7. The sheet cutting device according to claim 6 , wherein the scraping-off section includes a plate-like scraping-off member that is provided substantially horizontally.

8. The sheet cutting device according to claim 7 , wherein the scraping-off section is attached to the movable blade in such a way as to be able to swing.

9. The sheet cutting device according to claim 5 , wherein the scraping-off section is conductive.

10. The sheet cutting device according to claim 5 , wherein the scraping-off section is a brush.

11. The sheet cutting device according to claim 5 , wherein the scraping-off section is made of cloth.

12. The sheet cutting device according to claim 5 , wherein:
the auxiliary section has a function of guiding the sheet processed by an image formation device to the placement surface of the stage; and
the scraping-off section is provided at a position where the scraping-off section does not come in contact with the sheet when the auxiliary section guides the sheet to the placement surface of the stage.

13. The sheet cutting device according to claim 9 , wherein:
the auxiliary section has a function of guiding the sheet processed by an image formation device to the placement surface of the stage; and
the scraping-off section is provided at a position where the scraping-off section comes in contact with the sheet when the auxiliary section guides the sheet to the placement surface of the stage.

14. The sheet cutting device according to claim 1 , wherein the outer surface of the stage extends downwardly from the placement surface, and the support section is fixed to the outer surface of the stage and protrudes laterally outwardly from a lower portion of the outer surface of the stage.

15. The sheet cutting device according to claim 1 , wherein the support section includes a flexible film member configured to change posture from a horizontal state to a vertically downward state, and to restore the posture from the vertically downward state to the horizontal state.

16. The sheet cutting device according to claim 15 , wherein the support section has a comb-shape having a plurality of teeth, each of the teeth being arranged not to overlap vertically to each other, and to restore the posture from the vertically downward state to the horizontal state.

17. The sheet cutting device according to claim 1 , further comprising:
a holding section for attaching the support section to the stage,
wherein the support section further includes an attaching section having a hinge and an urging member, and a plate-shaped member that temporarily supports a portion of the remnant and is attached to the holding section through the attaching section such that the plate-shaped member is placed horizontally.

18. The sheet cutting device according to claim 1 , wherein the support section is arranged closer to the one end than the another end of the fixed blade to temporarily support only one end portion of the remnant cut from the sheet until another end portion of the remnant to be cut is cut from the sheet by the fixed and movable blades.

19. The sheet cutting device according to claim 1 , wherein the stage includes the placement surface of the stage, the outer surface of the stage being arranged perpendicular to the placement surface of the stage so that a length of the first side portion of the support section projecting from the outer surface is different from a length of the second side portion of the support section projecting from the outer surface.

Assignees

• Yamada Hiroyuki
• Kobayashi Takuma
• Canon Finetech Nisca Inc

Inventors

• Yamada Hiroyuki
• Kobayashi Takuma

Classifications

• B26D1/085

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

• B26D2007/0018

  Trays, reservoirs for waste, chips or cut products · CPC title

• Y10T83/2198

  Tiltable or withdrawable support · CPC title

• B26D1/08

  of the guillotine type · CPC title

• B26D2007/322

  the cut products being sheets, e.g. sheets of paper · CPC title