US 10,987,914 B2Granted

Gripper of a robot for gravure plate-making roll

AssigneeThink Laboratory Co., Ltd.

InventorsTatsuo Shigeta, Kaku Shigeta

Life of this patent

Estimating the term…

Loading patent…

Abstract

Provided is a gripping portion structure of a gravure plate-making robot in which the accurate gripping of an unprocessed plate-making roll and the positioning accuracy during transfer of the unprocessed plate-making roll to each processing device can be improved by causing a gravure plate-making robot to exhibit a high gripping force when gripping the unprocessed plate-making roll. The gripping portion structure of a gravure plate-making robot to be used in a fully automatic gravure plate-making processing system for manufacturing a gravure plate-making roll by gripping and transferring an unprocessed plate-making roll to each processing device includes: a pair of gripping plates to be mounted on an arm distal end of the gravure plate-making robot, the pair of gripping plates being freely spaced widely or narrowly from each other, and being configured to grip both end portions of the unprocessed plate-making roll; and a gripping surface forming member provided on each of the pair of gripping plates, the gripping surface forming member having a gripping surface that is curved so as to be recessed toward a center of the end portion of the unprocessed plate-making roll to be gripped and having a non-slip function.

Claims5

Dependent claims

A gripper of a robot for gripping and transferring a gravure plate-making roll, the roll being cylindrical and having axial end portion, the gripper comprising:

a frame portion having a longitudinal axis, and opposite first and second longitudinal ends;
a first gripping plate movably mounted on said first longitudinal end of said frame portion along said longitudinal axis;
a second gripping plate movably mounted on said second longitudinal end of said frame portion along said longitudinal axis, said first and second gripping plates being movable toward and away from each other on said frame portion;
a first gripping surface on said first gripping plate, said first gripping surface being configured to face said second gripping plate, said first gripping plate and said first gripping surface defining a cutout portion opened in a direction away from said frame portion;
a second gripping surface on said second gripping plate, said second gripping surface being configured to face said first gripping surface, said second gripping plate and said second gripping surface defining a cutout portion opened in said direction away from said frame portion, said first and second gripping surfaces having a curve, said curve being curved over a dimension greater than a diameter of the gravure plate-making roll, said curve being configured to cause said first and second gripping surfaces to contact the gravure plate-making roll predominantly at an outer circumferential edge of a respective one of the axial end portions of the gravure plate-making roll.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/765,784Filed 22 Nov 2018
Priority: JP JP2017-23706011 Dec 2017
Published: US 2020/0353744 A112 Nov 2020
Granted: 27 Apr 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

B25J 15/0293
Comprising parallel grippers: having fingers directly connected to actuator
B41F 9/18
Details: auxiliary devices for exchanging forme cylinders
B05C 1/0808
Using a roller or other rotating member which contacts the work along a generating line: details thereof, e.g. surface characteristics
B25J 15/0033
Gripping heads and other end effectors: with gripping surfaces having special shapes