JP2582616Y2 - Sorting device for weight sorter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sorting device of an automatic weight sorter for weighing articles conveyed on a belt conveyor and sorting the articles according to each weight rank.

[0002]

2. Description of the Related Art In an air jet sorter of a weight sorter, an article 5 conventionally weighed by a weighing conveyor 1 and an attached weight sensor 2 as shown in FIGS. When transported to the arranged distribution conveyor 3, the weight is transmitted from the weight sensor 2 and sorted by rank such as excess, appropriate amount, light weight, etc. set in advance according to the weight range. The distribution is performed by the air-jet device 6 arranged in a direction substantially perpendicular to the conveying direction of the above-mentioned distribution conveyor 3. For example, when the air-jet device 6 has an appropriate amount, the air-jet device 6 is not operated and the operation proceeds to the next-stage delivery conveyor 4 as it is. On the other hand, when the weight is light, the air jet device 6 is actuated to remove the article 5 to the position 5A.

[0003]

However, in the conventional method as described above, when an article is blown off by an air jet, a part of the air that has bounced off the article as shown in FIG. , And adversely affect the articles 5 that are subsequently weighed, causing a weighing error. In order to prevent this cause, the distribution position on the distribution conveyor should be far away from the weighing conveyor. However, as shown in FIG. 4, the articles 5 determined by the weighing conveyor 1 and the weight sensor 2 are located at the distribution position of the air-jet device. Since some pieces are weighed during the transfer to 6, the memory shift function is required to perform accurate sorting at the sorting position, and the apparatus becomes large and expensive, and for some reason, the measuring conveyor 1 and the There is a drawback in that when the order of the articles is exchanged with the sorting position or when the articles are dropped out, incorrect weighing is performed. In view of the above, an object of the present invention is to provide a distributing device having a length similar to that of the related art and in which the rebound direction of the air jet does not affect the measurement.

[0004]

SUMMARY OF THE INVENTION In the present invention, in an automatic weight sorter, a sorting conveyor disposed downstream of a weighing conveyor is inclined downward from the middle in the conveying direction, and ranks are determined based on the weighing result of the weighing conveyor. An air jet device as a separate sorting means is disposed at a substantially inclined angle with respect to the conveying direction of the conveyor on the descending inclined portion of the sorting conveyor, so that the air jetted from the air jet device during the sorting operation does not affect the weighing conveyor. It is characterized by the following.

[0005]

[Function] The distribution conveyor is inclined downward from the middle of the distribution conveyor toward the conveyance direction, and the distribution operation by the air jet is performed at the inclined portion, so that the direction in which the injection air hits the article and rebounds affects the weighing conveyor. Can not be given.

[0006]

1A and 1B show an embodiment of the present invention. FIG.
In FIGS. 3A and 3B, a weight sensor 2 is attached to a weighing conveyor 1 that weighs an article 5 while transporting the article 5, and an air jet device 6 is operated by a weight rank discriminating device (not shown) based on a weighing signal generated from the weight sensor. In operation, the articles 5 are sorted by rank. The air jet device 6
As shown in the figure, the sorting conveyor 3 is arranged at a right angle to the conveying direction on a descending inclined portion of the sorting conveyor 3 which is arranged at a subsequent stage of the weighing conveyor 1 and is inclined downward from the middle toward the conveying direction. The article of the rank determined by the control signal of the apparatus is carried out to the position of 5A by the air jet. In FIG. 1, the upper surface of the front part of the sorting conveyor 3 is flush with the upper surface of the weighing conveyor 1, but may be inclined upward in the transport direction as shown in FIG.
A delivery conveyor 4 for transporting the articles 5 in a straight line is provided downstream of the distribution conveyor 3. With the above configuration, the rebound of the jet air when the article 5 is discharged to 5A is in the a direction and does not affect the weighing conveyor.

[0007]

According to the present invention, the sorting conveyor arranged at the latter stage of the weighing conveyor is inclined downward in the conveying direction from the middle, so that the rebound of the injection air emitted from the air jet device at the time of sorting the articles is transferred to the weighing conveyor. There is an effect that an automatic weight sorter having a simple structure which can be prevented from being affected and which does not need the memory shift function can be realized.

[Brief description of the drawings]

FIG. 1 is a plan view A and a side view B of an automatic weight sorter according to an embodiment of the present invention.

FIG. 2 is a side view of an automatic weight sorter according to another embodiment of the present invention.

FIG. 3 is a plan view A and a side view B of an automatic weight sorter according to a conventional example.

FIG. 4 is a side view of another conventional automatic weight sorter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Weighing conveyor 2 Weight sensor 3 Distribution conveyor 4 Sending conveyor 5 Article 6 Air jet device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G01G 11/00 B07C 5/16 G01G 15/00

Claims (1)

(57) [Scope of request for utility model registration] 1. Weighing the weight of an article on a weighing conveyor,
In an automatic weight sorter that sorts articles according to preset weight ranks, the sorting conveyor is disposed at the latter stage of the weighing conveyor and is inclined downward in the conveying direction from the middle of the conveyor, and is conveyed at the descending inclined portion. A sorting device for a weight sorter, wherein articles are sorted according to each weight rank by an air jet device substantially perpendicular to the direction.