US Patent No. 10,694,647

TRANSFER UNIT, TRANSFER APPARATUS, AND HOLDING UNIT


Patent No. 10,694,647
Issue Date June 23, 2020
Title Transfer Unit, Transfer Apparatus, And Holding Unit
Inventorship Shinji Yokoyama, Kumamoto (JP)
Keisuke Teramoto, Kumamoto (JP)
Shuichiro Araki, Kumamoto (JP)
Assignee HIRATA CORPORATION, Kumamoto-Shi (JP)

Claim of US Patent No. 10,694,647

1. A transfer unit comprising:a holding unit configured to hold a workpiece; and
a driving unit configured to vertically move the holding unit,
wherein the holding unit includes:
a holding portion configured to hold the workpiece;
a movable portion configured to support the holding portion;
a support portion configured to support the movable portion such that the movable portion is vertically displaceable; and
a biasing portion configured to bias the movable portion downward with respect to the support portion,
the support portion has a first guide surface which guides displacement of the movable portion,
the movable portion has a first abutting surface which abuts against the first guide surface, and
each of the first guide surface and the first abutting surface is a surface which tapers off upward or downward, such that the first guide surface and the first abutting surface abut against each other and are positioned vertically with respect to each other when the movable portion is displaced downward with respect to the support portion.