JPH01133810A - Sorting device for goods - Google Patents

Abstract

PURPOSE:To make a thrust constant by arranging reaction plates on each truck, dividing linear motor coils into groups and always actuating a set of linear motor coil and a reaction plate, in a linear motor type device in the title. CONSTITUTION:An installation pitch between adjacent reaction plates 7 is represented by l and a mutual gap between them is represented by l2. A linear motor coil 6 is divided to two groups 6A, 6B and when the center line, XA-XA of the linear motor coil of the first group 6A is positioned in the center of the entire length l1 of the reaction plate 7 the center line XB-XB of the linear motor coil of the second group 6B is arranged to in stay the position l/2 far from the center of a gap l2 of the reaction plate 7. Thus, the resultant thrust of both groups can be flattened and the thrust can be made constant.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an article sorting device driven by a linear motor.

BACKGROUND ART The applicant of the present application has disclosed a linear motor-driven article sorting apparatus in Japanese Patent Application No. 311462/1988 entitled "Article Sorting Apparatus."

0 Problems to be Solved by the Present Invention In the linear motor drive system, there is a break in the driving force given to the traveling truck, and the thrust changes depending on the position of the traveling truck, so that the thrust is always constant regardless of the position of the traveling truck. Giving is difficult.

○ Means for Solving the Problems The present invention aims to eliminate the above-mentioned drawbacks of the prior art, and aims at eliminating the above-mentioned drawbacks of the prior art. Divide the linear motor coils into multiple groups, and
Set group number 2 The linear motor coils are arranged so that when the a motor coil is located between adjacent reaction plates, the linear motor coils of other groups are located at the position of the reaction plate.

○Embodiment Referring to FIGS. 3 to 5, an article sorting device using a glue near motor drive method will be described.

In FIGS. 3 to 5, reference numeral 1 denotes a loop-shaped running path, which is supported by frames 16 disposed at required intervals at the lower part of the running rail 1a, and at both ends of the running rail 1a. It is bent and inclined at part IX, and the other parts are horizontal straight paths IY and IZ, and this straight path I
Y and IZ are arranged vertically in parallel, and the running rail 1a forms a loop shape as a whole. A large number of sorting chutes 2a, 2b, .

In a part of IZ or on curved path IX, one or more transfer conveyors 4a, 4b, etc. are arranged at the position where the articles to be sorted are transferred onto the pan of the traveling trolley, and
This loop-shaped running path 1 includes a plurality of running carts 3, 3...
・is provided. The traveling carriage 3 is driven by a linear motor comprising a linear motor coil 6 disposed on the traveling path 1 at appropriate intervals and a reaction plate 7 mounted on the traveling carriage 3.

Note that the traveling speed and braking of the traveling truck are controlled by each linear motor. In addition, in order to more efficiently drive the traveling vehicle with the second linear motor, a reaction plate 7 is vertically provided on the lower surface of the traveling vehicle 3, as shown in FIG. 6 are placed opposite to each other on both sides of this reaction plate 7.

As shown in FIG. 5, a tiltable pan 3a is provided on the upper part of the traveling cart 3 by applying the conventional technology, and is tilted at a fixed position on the transfer conveyor 4 or the sorting chute 2.
Loading and unloading of goods can be done quickly and reliably.

In the above configuration, the running path is of the upper and lower two stages, but it goes without saying that the present invention can also be applied to a planar loop-shaped running path 11 that is commonly used in the past, as shown in FIG. It is.

Next, the present invention will be explained in detail with reference to FIGS. 1 and 2.

The traveling carts 3 are connected and arranged endlessly on a loop-shaped traveling path 1. Let β be the mounting pitch between adjacent reaction plates 7, and let β be the gap between them. In addition, i
This is the total length of the lL beam angion plate.

The linear motor coil 6 is divided into two groups 6A and 6B, and when the center line (Xpt-Xs) of the linear motor coil of the first group 6A is located at the center of the total length β1 of the reaction plate 7, the second group The center line (xm xm) of the linear motor coil 6B is the center of the gap β2 of the reaction plate 7 (i.e., the center line X?-X).

A second group of linear motor coils 6B is disposed at a position where a phase shift difference of β/2 is generated.

Due to the above-mentioned division into two groups, a composite thrust is generated by combining the thrust generated by the linear motor coil and reaction plate 7 of the first group 6A and the thrust generated by the linear motor coil and reaction plate 7 of the second group 6B. is smoothed, and the thrust acts on the traveling bogie 3 in a more averaged manner.

In the above embodiment, the first group of linear motor coils 6A and the second group of linear motor coils 6B are
Although the left and right pairs are provided with the reaction plate 7 in between, it goes without saying that two or more pairs may be provided.

Furthermore, as shown in FIG. 2, there are multiple (N) groups of linear motor coils such as 6A, 6B, 6C', 6D, etc., and the center line x of the linear motor coil of each group is
-x,,xc-xe,x,-x.

..., for the center line X, -X of the first group, 1
The object of the present invention can also be achieved even if the arrangement is such that a phase difference of /N, 2/Nβ, 37Nβ, . . . N-1/H is generated.

QEffects of the Invention The present invention has the advantage that there is no discontinuity in the driving force applied to each bogie, and the thrust by the linear motors is averaged, so that a substantially constant thrust can be provided no matter where the traveling bogie is located.

[Brief explanation of the drawing]

FIG. 1 is a partial plan view of a linear motor which is a main part of an article sorting device showing an embodiment of the present invention, and FIG.
FIG. 2 is a partial plan view of a linear motor showing an example. 6--FIG. 3 is a schematic plan view of a two-tiered article sorting device, FIG. 4 is a front view thereof, and FIG. 5 is a longitudinal sectional side view. FIG. 6 is a schematic plan view of a flat type article sorting device. 1... Travel path 2... Sorting chute 3... Traveling trolley 6... Linear motor coil 6A... First group 6B... ...Second group 7...Reaction plate λ, ...Reaction plate center 12...
... Center of mutual gap between reaction plates Patent applicant Hitachi Kiden Kogyo Co., Ltd. 71 Figure 1 Xs B Figure 2 n

Claims (1)

[Claims] Each of a large number of traveling bogies is equipped with a reaction plate and connected endlessly, a plurality of linear motor coils are divided into a plurality of groups, and one group of linear motor coils is located between adjacent reaction plates. An article sorting device characterized in that the linear motor coils are arranged so that the linear motor coils of other groups are located at the position of the reaction plate.