Weighing apparatus and combination weighing apparatus

Patent metadata

Field	Value
Publication number	US-11274959-B2
Application number	US-202016894963-A
Country	US
Kind code	B2
Filing date	Jun 8, 2020
Priority date	Jun 25, 2019
Publication date	Mar 15, 2022
Grant date	Mar 15, 2022

Abstract

A weighing apparatus includes a load cell, a fixing portion to which one end of the load cell is fixed, a hopper configured to store articles, a connecting portion configured to connect the other end of the load cell and the hopper to each other, a first support portion facing a first portion provided to the load cell or the connecting portion via a first gap and configured to support the first portion along a first direction when a first limit load acts on the hopper, and a second support portion facing a second portion provided to the load cell or the connecting portion via a second gap and configured to support the second portion along a second direction intersecting the first direction while the first support portion supports the first portion when a second limit load larger than the first limit load acts on the hopper.

First claim

What is claimed is:

1. A weighing apparatus comprising:
a load cell;
a fixing portion to which one end of the load cell is fixed;
a hopper configured to store articles;
a connecting portion configured to connect the other end of the load cell and the hopper to each other;
a first support portion facing a first portion provided to the load cell or the connecting portion via a first gap and configured to support the first portion along a first direction when a first limit load acts on the hopper; and
a second support portion facing a second portion provided to the load cell or the connecting portion via a second gap and configured to support the second portion along a second direction intersecting the first direction while the first support portion supports the first portion when a second limit load larger than the first limit load acts on the hopper.

2. The weighing apparatus according to claim 1 ,
wherein the first direction is a vertical direction,
the second direction is a direction in which the one end of the load cell and the other end of the load cell face each other,
the first support portion is provided to a first extending portion configured to extend from the fixing portion to a side of the load cell, and
the second support portion is provided to a second extending portion configured to extend above the load cell from the fixing portion.

3. The weighing apparatus according to claim 2 ,
wherein the first portion is provided to the connecting portion to face the first support portion from above in the first direction, and
the second portion is provided to the connecting portion to face the second support portion from an opposite side from the hopper in the second direction.

4. A combination weighing apparatus comprising:
a plurality of weighing apparatuses according to claim 1 ;
a conveyance portion configured to convey the articles to the hopper; and
a controller configured to select a combination of weighing values so that a total value becomes a target weighing value based on weighing values of the articles output from the weighing apparatuses, and discharge the articles to the hopper corresponding to the combination.

Assignees

• Ishida Seisakusho

Inventors

• Oda Kazuteru

Classifications

• G01G23/005

  Means for preventing overload · CPC title

• G01G3/14

  measuring variations of electrical resistance (G01G3/13 takes precedence) · CPC title

• G01G19/393 Primary

  using two or more weighing units · CPC title

• G01G19/387 Primary

  for combinatorial weighing, i.e. selecting a combination of articles whose total weight or number is closest to a desired value · CPC title