Title:
CONVEYANCE METHOD AND CONVEYANCE DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/096732
Kind Code:
A1
Abstract:
One aspect of the present invention relates to a conveyance method in which an object to be conveyed is mounted on a slider and conveyed, the slider being connected to a ball nut threaded onto a ball screw shaft. The conveyance method comprises the following steps: a step for rotating, by an electric motor, the ball screw shaft; a step for imparting, by a non-electric resistance varying unit, a braking force, which is a rotational resistance, to the ball screw shaft; and a step for setting a drive torque of the electric motor and/or a braking force of the resistance varying unit such that the slider stops when a predetermined external force acts on the slider during conveyance and causes the slider to become overloaded, regardless of the presence/absence of an object to be conveyed mounted on the slider and regardless of the weight of the object to be conveyed.
Inventors:
MATSUMOTO BUNGO (JP)
Application Number:
PCT/JP2017/028340
Publication Date:
May 31, 2018
Filing Date:
August 04, 2017
Export Citation:
Assignee:
HIRATA SPINNING (JP)
International Classes:
B65G25/06; B65G17/12; F16H25/22
Foreign References:
| JPH02309046A | 1990-12-25 | |||
| JP2001227537A | 2001-08-24 | |||
| JP2010042911A | 2010-02-25 | |||
| JPH07206088A | 1995-08-08 | |||
| JPH07131970A | 1995-05-19 | |||
| JP2000186477A | 2000-07-04 | |||
| JP2002316791A | 2002-10-31 | |||
| JP2002266972A | 2002-09-18 | |||
| JP2006327733A | 2006-12-07 | |||
| JP2015067405A | 2015-04-13 |
Other References:
See also references of EP 3546396A4
Attorney, Agent or Firm:
OHTSUKA, Yasunori et al. (JP)
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