Transport device and transport system

Patent metadata

Field	Value
Publication number	US-11964825-B2
Application number	US-201916977047-A
Country	US
Kind code	B2
Filing date	Jan 30, 2019
Priority date	Mar 1, 2018
Publication date	Apr 23, 2024
Grant date	Apr 23, 2024

Abstract

A transport device includes a carriage that travels along a traveling path that is predetermined; a transfer mechanism provided on the carriage and transfers an article in a transfer space set in the traveling path; a first movable element that is a rod shaped component attached to the carriage, extends in a traveling direction of the carriage, and operates by magnetism to drive the transfer mechanism; and a first stator fixedly disposed with respect to the traveling path, has a partially cutout ring shape, and causes the first movable element to operate by magnetism when part of the carriage is positioned outside the transfer space.

First claim

The invention claimed is:

1. A transport device comprising:
a carriage that travels along a traveling path that is predetermined;
a transfer mechanism provided on the carriage and transfers an article in a transfer space set in the traveling path;
a first movable element that is a rod shaped component attached to the carriage, extends in a traveling direction of the carriage, and operates by magnetism to drive the transfer mechanism; and
a first stator fixedly disposed with respect to the traveling path, has a partially cutout ring shape, and causes the first movable element to operate by magnetism when part of the carriage is positioned outside the transfer space, wherein
at a timing when the first movable element provided on the carriage is inserted into the first stator that is positioned nearer the carriage, magnetic force is generated by the first stator to rotate the first movable element and accelerate the transfer mechanism, and at a timing when the carriage stops within the transfer space, magnetic force is generated by the first stator to rotate the first movable element to match a speed of the transfer mechanism with a speed of a loading device, and the speed of the loading device is a speed of loading the article into the transfer space in a direction intersecting the traveling path.

2. The transport device according to claim 1 , wherein when the carriage is entirely positioned within the transfer space, the first stator causes the first movable element to operate by magnetism.

3. The transport device according to claim 1 , wherein the first stator is disposed in at least one of one end in the transfer space or an other end in the transfer space in the traveling direction.

4. The transport device according to claim 1 , further comprising:
an additional first stator fixedly disposed with respect to the traveling path in the transfer space, has a partially cutout ring shape, and causes the first movable element to operate by magnetism, wherein
the additional first stator is disposed in at least one of a location outside the transfer space and near one end of the transfer space in the traveling direction or a location outside the transfer space and near an other end of the transfer space in the traveling direction.

5. The transport device according to claim 1 , further comprising:
a second stator disposed continuously or discretely along the traveling path, and
a second movable element attached to the carriage, operates by magnetism from the second stator, and causes the carriage to travel along the traveling path.

6. The transport device according to claim 1 , wherein an absolute value of acceleration of the transfer mechanism before the transfer mechanism receives the article in the transfer space is greater than an absolute value of deceleration of the transfer mechanism after the transfer mechanism receives the article, the acceleration being performed by the first movable element that operates by magnetism from the first stator.

7. A transport system comprising:
the transport device according to claim 1 , and
a loading device that loads an article into the transfer space in a direction intersecting the traveling path.

8. The transport system according to claim 7 , wherein
the loading device is disposed to load the article in a loading direction perpendicular to the traveling path, and
the transfer mechanism is a conveyor that moves the article in a direction perpendicular to a traveling direction of the carriage.

Assignees

• Murata Machinery Ltd

Inventors

• Kadoguchi Kenji

Classifications

• B65G41/02 Primary

  Frames mounted on wheels for movement on rail tracks · CPC title

• B65G13/08

  of curved form; with branch-offs · CPC title

• B65G13/12

  adjustable · CPC title

• B65G47/52

  Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices (loading or unloading by means not incorporated in, or not operatively associated with, conveyors B65G65/00; transfer of workpieces during metal rolling B21B41/00) · CPC title

• B65G47/96 Primary

  Devices for tilting links or platform {(releasing load-carriers B65G47/38)} · CPC title