Pick-up device

Patent metadata

Field	Value
Publication number	US-12043936-B2
Application number	US-202117539307-A
Country	US
Kind code	B2
Filing date	Dec 1, 2021
Priority date	Dec 10, 2020
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

A pick-up device picking up stacked sheet-shaped workpieces from the top, the device includes a nozzle mechanism that includes a pick-up nozzle pulling up a first workpiece from the top of the stacked workpieces by air blowing, and a holding mechanism that holds the first workpiece from the top. The pick-up nozzle includes a ventilation groove provided on a bottom surface opposite to an upper surface of the first workpiece from the top and passing through to an air blowing side end part of the bottom surface, and a nozzle port blowing air toward the air blowing side end part of the bottom surface along the inside of the ventilation groove, and the air blowing side end part of a groove inner bottom surface of the ventilation groove is formed in a shape directed in a direction of being separated from the workpiece.

First claim

What is claimed is:

1. A pick-up device picking up stacked sheet-shaped workpieces from the top, the device comprising:
a nozzle mechanism that includes a pick-up nozzle pulling up a first workpiece from the top of the stacked workpieces by air blowing; and
a holding mechanism that holds the first workpiece from the top, the holding mechanism includes a gripping member that is lowered relative to a claw member on an upper side of the claw member to grip the first workpiece, and a gripping drive unit that gives the gripping member a movement operation for allowing the gripping member to move along a relatively downward direction with respect to the claw member,
wherein the pick-up nozzle includes a ventilation groove provided on a bottom surface opposite to an upper surface of the first workpiece from the top and passing through to an air blowing side end part of the bottom surface, and a nozzle port blowing air toward the air blowing side end part of the bottom surface along the inside of the ventilation groove,
the air blowing side end part of a groove inner bottom surface of the ventilation groove is formed in a shape directed in a direction of being separated from the workpiece, and
the air blowing side end part of the bottom surface of the pick-up nozzle is separated from the first workpiece further than other portions of the bottom surface by a step.

2. The pick-up device according to claim 1 ,
wherein the air blowing side end part of the groove inner bottom surface of the ventilation groove is formed with a curved surface of which undulation angle gradually increases from a state parallel to the bottom surface of the pick-up nozzle.

3. The pick-up device according to claim 1 ,
wherein the air blowing side end part of the groove inner bottom surface of the ventilation groove is formed with an inclined surface inclined at a constant undulation angle with respect to the bottom surface of the pick-up nozzle.

4. The pick-up device according to claim 1 , further comprising:
a separation mechanism that includes the claw member being inserted into a lower side of the first workpiece from the top with respect to the stacked workpieces, and a forward and backward drive unit causing a tip part of the claw member to move forward and backward.

5. The pick-up device according to claim 4 ,
wherein the pick-up nozzle is disposed on a downstream side in an advancing direction with respect to the claw member.

6. The pick-up device according to claim 4 , further comprising:
a suction mechanism that includes a non-absorption type suction pad pulling up the first workpiece from the top of the stacked workpieces.

7. The pick-up device according to claim 4 , further comprising:
a thickness detecting unit that detects a thickness of the workpiece on the claw member; and
a determination unit that determines whether or not one sheet of the workpiece is held by the holding mechanism based on the detection of the thickness detecting unit.

8. The pick-up device according to claim 7 ,
wherein the thickness detecting unit detects the thickness of the workpiece on the claw member from a height of the gripping member with respect to the claw member.

Assignees

• Juki Kk

Inventors

• Uehara Yuuki
• Maruyama Takeshi

Classifications

• B65H3/14

  Air blasts producing partial vacuum · CPC title

• B65H3/0833

  and acting on the front part of the articles relatively to the final separating direction · CPC title

• D05D2207/04

  Suction or blowing devices · CPC title

• B65H2406/343

  Details of sucking member · CPC title

• B65H2301/42324

  from top of the pile · CPC title