JPH0281819A - Sorting equipment - Google Patents

Abstract

PURPOSE:To improve conveying capacity in a correcting tact feeder control means by changing the speed of the correcting tact feeder based on the detected load interval pitch, correcting the load interval pitch to be constant, and reducing the starting/stoppage of the tact feeder. CONSTITUTION:A load detecting device 22 is provided on the side portion of a conveying line 1 on the upper course side of a correcting tact feeder 21 and further, a load detecting device 23 is provided on the side portion on the upper course side of the conveying line 1. A correcting tact feeder controller 24 receives the load detecting signal R of the load detecting device 22 and the load detecting signal S of the load detecting device 23 and outputs a driving signal T to the correcting tact feeder 21 and controls the correcting tact feeder 21. This controller 24 measures the load interval pitch of loads 2 conveyed by the load detecting signal S and changes the speed of the feeder 21 each time the load detecting signal R is inputted. Hence, the load interval pitch is corrected to the constant and the load 2 is conveyed into a tact feeder 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to sorting equipment, and in particular to a means for adjusting the pitch between transported loads, that is, the pitch between loads.

BACKGROUND OF THE INVENTION It is necessary to guarantee the above-mentioned pitch between loads in accordance with the sorting capacity, and a duct feeder has conventionally been used as a means for adjusting the pitch between loads.

Conventional sorting will be explained based on the configuration diagram of the duct feeder t in the equipment shown in FIG.

In Fig. 6, reference numeral 1 denotes a conveyance line consisting of a belt conveyor that conveys 2 tons of goods, and a part of the conveyance path of conveyance line 1 consists of a short conveyor belt, which corrects the pitch between goods 2 to a constant value. Duct feeder 3 transporting 2 tons of cargo
is provided. A load detection device (hereinafter referred to as PH
A PH55 is provided on the side of the duct feeder 3 upstream of the line.
The loading of the load 2 into the duct feeder 3 is detected by the load detection signal A of PH54, and a drive signal is sent to the duct feeder 3 so that the pitch between the loads 2 carried out from the duct feeder 3 is constant based on the load detection signal B of PH54. Ct-output.

A duct feeder controller 6 is provided to start and stop the duct feeder 3'.

In Fig. 6, 7 is a host computer that supervises the sorting equipment, and when the load detection signal Dt is input manually from the PH38 installed on the downstream side of the line of the duct feeder 3, the twin downstream side of the PH38 is output. A drive signal E'5c is output to the label μ reader (hereinafter referred to as BCR) 9 which reads the barcode of the label μ of 1 load 3 installed in the section, and the drive signal E'5c is operated for a certain period of time. Based on the data signal F of 2, the previous chute is assigned to load 2 based on the data of load 2 and the previous chute for sorting, and the sorter is actually driven to sort load 2 into the chute. outputs an optical signal f(l) for sorting to the controller 10, and outputs a duct feeder control start signal Hfe to the duct feeder controller 6. The sorting of cargo 2 detected by the detected PHS 11 (cargo detection signal J) identifies the previous chute, and
Load 2 is sorted into the desired chute.

With the above configuration, the pitch between the loads 2 is guaranteed by the duct feeder 3, and the sorting output from the host computer 7 is determined by the optical signal G, and the sorting by the load detection signal J of PH5II is determined by the tying input into the controller 10. This prevents the product from going awry, and the controller 10 performs sorting on the load 2.
This prevents the cargo 2 from being erroneously sorted due to erroneous identification.

Problems to be Solved by the Invention However, in the conventional duct feeder 3, there is an error in stopping accuracy due to the length and weight of the load 2 when the duct feeder 3 is stopped, and an error in the stopping accuracy when the duct feeder 3 is started from a stop. Since errors may occur due to length and weight, there is a limit to correcting the inter-load pitch to keep it accurate using only the duct feeder 3, so it is recommended to set the inter-load pitch as wide as necessary. , the psyche μ for starting and stopping the duct feeder 3 increases, and the conveyance capacity becomes low.The invention solves the above problem, and the inter-load pitch is guaranteed, and the sorting equipment with improved conveyance capacity is used. The purpose is to provide the following.

Means for Solving the Problems To solve all of the above problems, the present invention provides a duct feeder that is provided in a part of the transport route of a transport line that transports loads, and that transports the loads by correcting the pitch between the loads to a constant value. a modified duct feeder provided in a part of the transport path upstream of the transport line from the duct feeder and capable of varying the transport speed of the load; and a modified duct feeder provided on a side part of the transport line upstream of the transport line from the modified duct feeder. a first load detection device provided; a second load detection device provided on a side of the conveyance line further upstream of the first load detection device;
The pitch between the loads is measured and stored each time the load detection signal of the second load detection device is input, and the first load detection is performed each time the load detection signal of the first load detection device is input. The apparatus is equipped with a correction duct feeder control means for changing the speed of the correction duct feeder according to the stored inter-load pitch between the load passing through the apparatus, the load in front of the load, and the load behind the load.

Operation With the above configuration, in the modified duct feeder control means, the pitch between the loads to be transported is measured based on the load detection signal of the second load detection device, and every time the load detection signal of the first load detection device is input. Then, the speed of the correcting duct feeder is changed based on this inter-load pitch, the correcting duct feeder corrects the inter-load pitch to be constant, and the loads are carried into the duct feeder. Therefore, the number of cycles of starting and stopping the duct feeder is reduced, and the conveyance capacity is increased.

EXAMPLE Hereinafter, an example of the present invention will be described based on the drawings. Note that the same components as those in FIG. 6 of the conventional example are given the same reference numerals, and the explanation thereof will be omitted.

FIG. 1 is a diagram illustrating a main part of a sorting facility showing an embodiment of the present invention. In FIG. 1, 21 is a modified duct feeder provided in a part of the line upstream conveyance path of the duct feeder 3. Conveyance line 1 further upstream of PHS 22
Pus 23 is provided on the side of the PH3.
A modified duct feeder controller 24 is provided which inputs the load detection signal R of 22 and the load detection signal S of PH323, outputs a drive signal T to the modified duct feeder 21, and controls the modified duct feeder 21t.

As shown in the modified duct feeder controller 24H, 1219, an inter-load pitch/load interval/chief measuring section (hereinafter abbreviated as measuring section) 25. Memory section 26 Machining speed setting output section 2
It consists of 7. Every time the measuring unit 25 receives the load detection signal S of the PH523, the measuring unit 25 calculates the inter-load pitch Pn, the load interval ln, and the cylinder length Xnt? of the load 2, as shown in the third factor. It is measured and sent to the memory section 26, which passes all the way over the corrected duct feeder 21 and records the load detection signal R of PH522 with the inter-load pitch t-Po of the load 2, the load interval lo, and the cylinder length Xo. By sequentially rewriting (Po, to.

Xo), CP+ lit mXs), (PI
* A'l e Xt) "" (Pus 4,
x,) is memorized. The speed setting output section 27 outputs (Pi, io, Xa) and (R-1) from the memory section 26.
+ -Xt )Oy'-J' and transfer line 1
Let the moving speed of be vl.

Speed Vt of modified duct feeder 21? Fi(V=
W+α, ), at medium speed (V=v+), at low speed f u (V
= Vt Us ), that is, Fig. 4 (
As shown in a) to (C), at medium speed, the load pitch P of load 2 does not change, at high speed, the pitch P between the load 2 and the preceding load 2 is maximum L0 (m) lat '), and at low speed, The inter-load pitch P with respect to the preceding load 2 is set and outputted so as to be widened by a maximum of Lx (lIj).

Hereinafter, the speed setting of the speed setting output section 27 will be explained according to the flowcharts shown in FIGS. 5fa) and 5(b).

The speed setting output unit 27 changes the speed setting each time the load detection signal R of the PH522 is input, and when the load detection signal R is input (step 31), the speed setting output unit 27 changes the speed setting on the corrected duct feeder 21 at the current speed V. Pass through L*m 2 (7) Correct the inter-load pitch po and the load interval 10 to determine the distance to the load 2 sent by the primary VcM. In step 32.33, it is determined whether the current speed is high speed, medium speed, or low speed depending on whether the current speed ■ is 71 or more or less. (n) @PafI: (Po+L+), l because the pitch between the loads and the next load 2 increases
t'' (to + L+) and correct step 34.
゜35), if the speed is low, Lx (!DI), the pitch between the loads and the following load 2 will be reduced, so Pok (Pi Ls),
lo'kclo L-correction (step 36.3
7). Next, depending on the pitch b between the controlled load 2 and the preceding load 2, and the load interval 1, the speed V can be set to a high speed.
In step 38, it is determined whether the speed should be increased based on whether the distance between the loads is further reduced or whether lo is not shorter than the specified load interval l.
〜41), Next, how many pitches B between the primary controlled load 2 and the following load 2, and how low the speed can be set by the load interval 11?
In other words, in the case of low-speed binding, it is determined whether P is less than the specified inter-load pitch P or l+ is less than the specified inter-load pitch jL (step 42).
~45). Then, the speed vt- is set based on the inter-load pitch Po with respect to the preceding load 2. That is, Po is (P+L+)
In the case of higher speed permission, the speed V is set to higher speed (Vs+
αI) is set to step 46-48), P is set to (P-
L is smaller than L, and in the case of low speed permission, the speed V is set to the low speed (v
Steps 49 to 51) to set the speed to l−α; otherwise, set the speed to V7, which is a medium speed, step 52);
It is set and outputted to the modified duct feeder 21 as a constant speed vt-drive signal T (step 53).

Is this work due to the modified duct feeder controller 24? ) (In order to control the IJi positive duct feeder 21, the pitch between the loads with the preceding load 2 is reduced by L1 (m) at high speeds, and the pitch between the loads with the following load 2 is increased by l, (m). At low speeds, the inter-load pitch of the preceding load 2 can be increased by Lx (m), and the inter-load pitch between the following load 2 and the following load 2 can be reduced by Lx (m). Therefore, when the load 2 is transported in an extremely packed state.

In other words, except in cases where low speed and high speed are not permitted in steps 38 to 45, the inter-load pitch is corrected to the specified inter-load pitch P, and the number of times the duct feeder 3 is stopped to take the inter-load pitch is reduced. It is possible to increase the conveyance capacity. If low speed or high speed is not permitted in steps 38 to 45 above, the duct feeder 3
Therefore, the pitch between the loads will be corrected.

In addition, in this embodiment, the speed setting of the correction tact 21 is set to high speed,
There are three stages of medium speed and low speed, but it is possible to make more detailed settings by using the linear formula for the interload pitch and speed setting, or by further converting the speed setting by the cylinder length Xt to 7t#7. This makes it possible to improve the cleanliness of the pitch between loads.

Effects of the Invention As described above, according to the present invention, the modified duct feeder control means measures the inter-load pitch of the loads conveyed on the conveyance line 1 based on the load detection signal of the second load detection device,
By changing the speed of the correction duct feeder based on the inter-load pitch each time the load detection signal of the WIJl load detection device is input, the inter-load pitch can be corrected to a constant value. It is possible to reduce the number of times the machine must stop and correct the pitch between loads, and the conveyance capacity of the sorting equipment can be increased.

[Brief explanation of the drawing]

Figures 10 to #IIs are -5i! of the present invention! Example 7 is shown, the first factor is the main part configuration diagram of the equipment for sorting, Figure 2 is a block diagram of the modified duct feeder controller for sorting equipment, and the third
Figures 4(a) to 4(cl) are respectively the tth schematic diagram explaining the operation of the corrected duct feeder of the equipment, and Figures 5(a) and 4 are the speed setting output section of the corrected duct feeder controller. Flowchart diagram showing the operation, No. 6
The figure shows the main parts of conventional sorting equipment ■. DESCRIPTION OF SYMBOLS 1... Conveyance line, 2... Load, 3... Duct feeder, 21... Corrected duct feeder, 22... (First) load detection device (PH5), 23... (First) 2) load detection device (PH5), 24... corrected duct feeder controller (corrected duct feeder control means), R,
S...Load detection signal. Figure 3 Figure 5 (b) ¥5 [21 (a) Jsu

Claims (1)

[Claims] 1. A duct feeder that is installed in a part of the transport path of the transport line that transports loads and that corrects the pitch between the loads to a constant value, and a duct feeder that is installed in a part of the transport route upstream of the transport line from the duct feeder. a modified duct feeder which is provided and is capable of varying the conveyance speed of the load; a first load detection device provided on a side of the conveyance line upstream of the conveyance line from the modified duct feeder; and the first load detection device. A second load detecting device provided on a side of the conveying line further upstream from the device, and measuring the inter-load pitch of the loads each time a load detection signal of the second load detecting device is input. The stored load gap between the load passing through the first load detection device and the load in front of and the load behind this load is stored each time the load detection signal of the first load detection device is input. and a modified duct feeder control means that changes the speed of the modified duct feeder according to the pitch.