Cleaning device

Patent metadata

Field	Value
Publication number	US-12005697-B2
Application number	US-202018043933-A
Country	US
Kind code	B2
Filing date	Sep 16, 2020
Priority date	Sep 16, 2020
Publication date	Jun 11, 2024
Grant date	Jun 11, 2024

Abstract

A cleaning device cleans a screen mask. The cleaning device includes a cleaning sheet configured to clean the screen mask; a roll-shaped supply section configured to supply the cleaning sheet; a cleaning head configured to press the cleaning sheet supplied from the supply section against a rear surface of the screen mask; a roll-shaped winding section configured to wind a used cleaning sheet; a driving section configured to drive the winding section; a moving mechanism configured to move the supply section, the cleaning head, and the winding section in the same direction as and in an opposite direction to a supply direction of the cleaning sheet; a lifting and lowering mechanism configured to lift and lower the cleaning head; and a brake mechanism configured to allow rotation of the supply section when the cleaning head is lowered by the lifting and lowering mechanism, and to restrict rotation of the supply section when the cleaning head is lifted by the lifting and lowering mechanism.

First claim

The invention claimed is:

1. A cleaning device that cleans a screen mask, comprising:
a cleaning sheet configured to clean the screen mask;
a roll-shaped supply section configured to supply the cleaning sheet;
a cleaning head configured to press the cleaning sheet supplied from the supply section against a rear surface of the screen mask;
a roll-shaped winding section configured to wind a used cleaning sheet;
a driving section configured to drive the winding section;
a main body that rotatably supports the supply section and the winding section, the main body including a bottom interior plate;
a moving mechanism configured to move the supply section, the cleaning head, and the winding section in the same direction as and in an opposite direction to a supply direction of the cleaning sheet;
a lifting and lowering mechanism fixed to the bottom interior plate and configured to lift and lower the cleaning head relative to the bottom interior plate, the lifting and lowering mechanism including a first air cylinder; and
a brake mechanism configured to allow rotation of the supply section when the cleaning head is lowered by the lifting and lowering mechanism, and to restrict rotation of the supply section when the cleaning head is lifted by the lifting and lowering mechanism, the brake mechanism including a second air cylinder fixed to the bottom interior plate and configured to move the brake mechanism relative to the bottom interior plate.

2. The cleaning device according to claim 1 , wherein
the first air cylinder is configured to lift and lower the cleaning head with air,
the brake mechanism includes a contact section configured to contact with the supply section, and the second air cylinder is configured to drive the contact section with air to a contact position where the contact section contacts the supply section and a separation position where the contact section is separated from the supply section, and
air is supplied to the second air cylinder from a second air passage that branches from a first air passage through which air is supplied to the first air cylinder.

3. The clean device according to claim 2 , further comprising:
an air supply section configured to supply the air to the first air passage and to the second air passage, wherein
when the air supply section supplies the air to the first air passage and to the second air passage, the cleaning head is lifted and the contact section is moved to the contact position, and
when the air supply section does not supply the air and the air is exhausted from the first air cylinder and the second air cylinder, the cleaning head is lowered and the contact section is moved to the separation position.

Assignees

• Fuji Corp

Inventors

• Yokoi Yoshimune

Classifications

• B08B1/30

  by movement of cleaning members over a surface · CPC title

• B41P2235/246

  Pressing the cleaning cloth against the cylinder · CPC title

• B41P2235/244

  Rewinding the cleaning cloth · CPC title

• B41P2235/242

  Unwinding the cleaning cloth · CPC title

• B41F15/0881

  for printing on polyhedral articles · CPC title