JPS5992825A - Control method of induction of tray-type sorter - Google Patents

Abstract

PURPOSE:To supply conveyed matters in an efficient and stable manner by arranging various kinds of conveyor to induction units in specified order and by sending signals from various kinds of photo attached to the various kinds of conveyor to the conveying rate upstream from the induction unit. CONSTITUTION:An induction unit 2 attached to a tray-type sorter is provided, starting from the sorter side, with a loading conveyor 3, a sending conveyor 4, a discharging conveyor 6 with a pulse generator 5, a pressure conveyor 7, and a supplying conveyor 8 that are arranged in this order. An induction photo 9 at the tip of the conveyor 3 detects the arrival of a conveyed matter, while a tail edge photo 10 at the tip of the conveyor 6 detects the completion of discharge of the matter. A present photo 11 behind the photo 10 corrects an error in position of oscillation for the conveyed matter. While both a length detecting interlock photo 12 and an oscillator 5 produce length data consisting of a pair of informations. An updata photo 13 is placed on the starting side of refraction of the sorter.

Description

[Detailed description of the invention] The induct photo is transported from the outgoing part of the induct while taking into account the conveyance amount on the upstream side of the induction, the starting condition of the conveyed object, the length of the conveyed object, the elongation of the sorter tie, and the fluctuation of the sorter speed. This invention relates to a control method for efficiently (and stably) feeding objects to a tray.

Conventionally, the common method of merging conveyed objects from the induct photo exit part is to correlate the conveyed object trajectory distance to the merging point with the conveyor speed and calculate the merging timing by integrating the time it takes for the conveyed objects to pass over each conveyor. It is well known how to remove

However, when simply relying on the above method, it is important to be able to stably account for errors when the transported items move between individual conveyors due to the starting condition of the transported items, the length of the transported items, the elongation of the sorter drive unit, etc. was completed.

The present invention has been invented to eliminate those drawbacks, and to describe an embodiment thereof, a tray koto sorter (1) has a plurality of inductions (2a) (2b) (2C)...
・In addition to installing each induction (2a) (
In 2b) (2c)..., a tray-type sorter (hereinafter referred to as a noter) is connected to a tray-type sorter (hereinafter referred to as a noter), and a loading conveyor (3) and a feeding conveyor (4) are connected to the side in contact with <i>. , a dispensing conveyor (6) with a pulse oscillator (5), a pressure conveyor (7) and a supply conveyor (8)
The conveyed items are arranged in the order of , and the conveyed items started from the discharging conveyor (6) near the tip of the loading conveyor (3) (sorter (1) side) are transferred to the induction (2a) (2': +
) (2c)... A pair of induct photos (9) that detect arrival at the tip of... are placed near the tip of the delivery conveyor (6) (on the feed conveyor (4) side).
In combination with the induct photo (9), a pair of tail edge photos (
10), and a plurality of pairs of present photos aυ that are arranged in series at the rear of the conveyor (6) to correct errors caused by the position of transmitting the conveyed object.
In combination with a pulse oscillator (5) that is synchronized with the delivery conveyor (6) at the rear, and (in combination with only one photo switch), there are two pairs of length detection interfaces that create length data used for conveyance start correction. A lock photo (12+) is arranged between the present photo circle and the length detection interlock photo (12), and the Norms oscillator (
5).

Furthermore, the amplifier date photo (i3) is sorted (1)
(1) Appropriately placed on the starting side of the straight section of the
Configure.

Next, I will explain the operation based on the diagram. When the conveyed object is placed on the supply conveyor (8) of the induction (2), it moves to the sorter (1) side and is transferred to the pressure conveyor (through force, the discharge conveyor (6) ) and the length detection interlock photo (121) and synchronous pulse oscillator (5
), the length of the conveyed object is detected by the length detection interlock photo (12), and at the same time, the number of pulses from the synchronous pulse generator (5) matching the length of the conveyed object is obtained.

Then, from the length detection interlock photo (12+ and synchronous pulse oscillator (5)), the length data creation block circuit (
17) to create data, and also send length data to the length data registration block circuit (181) for registration.

When the conveyed object further advances, the conveyed object is detected by the present photo (1υ), and a signal is sent to the induction conveyed object arrival detection block circuit α■, and the induction upstream side fullness judgment block circuit is detected by the fullness detector appropriately installed on the induction upstream side. ■Send a signal to.

Then, the block circuit μUS sends a signal to the payout reservation registration block circuit (20), and the induction (2) registers the payout reservation for the conveyed object. At that time, if there is no delivery command, the conveyed object stops at the tip of the delivery conveyor (6) and waits.

Next, the sorter (
A synchronous pulse oscillation container is installed in the drive unit of 1), and it is driven by the pulse signal, so the pulse signal is sent to the sorter speed detection block circuit 0υ to detect the sorter speed and calculate the value given from the pulse time interval as ts. The time setting block circuit (27J is sent to set the sorter speed fluctuation error correction time jslSi for each injection)
s2.1s3-... is determined.

At the same time, it is detected whether there is an object on the tray (C) of the sorter (1) using the tray empty detection photo α→ and the update photo (131), and the tray (C) is detected using the amplifier date photo αJ. detects the current position of the tray and sends the "empty 1" and "position 6" signals to the tray loading OK determination block circuit (2).

Separately, the signal registered in the payout reservation registration block circuit (a) is sent to the payout induction setting block circuit (25) to set which induction (2) the payout is to be made from (.Payout induction setting block circuit (25) and the length is determined, and a signal for the time necessary for length correction, a signal for determining which induction (2) to discharge from, and a ts waiting time setting signal are sent to the conveyed object start correction block circuit (5). ) to correct the start time of the conveyed object and send a signal to the conveyed object start confirmation block circuit (28+, present photo) (II) and tail edge photo (IQ).
When both signals are confirmed, the specified induction (2) is sent from
The conveyed items are started from the delivery conveyor (2) to the tray G31 of the sorter (1). At this time, the induction photo (9) confirms that the conveyed object has arrived at the tip of the induction (2).

Therefore, induction (2a) (2b) (2c)...
Even if there are a plurality of empty trays, objects can be accurately loaded onto the tray (23) from the respective inductions (2a), (2b), (2c), and so on.

This works as described above, and therefore each set time is 2tupl... After the traveling wheel of tray (1) passes through annotation date fooj (L31), the induction (
2C) Time to arrive at the cargo loading position.

After the traveling wheel of the 3 tup 2...fist tray) passes the amplifier date photo (131), the induction (2
b) Time to arrive at the conveyed goods loading position.

ko3 tup 3...Time for the traveling wheels of the tray (r) to arrive at the conveyed material loading position of the induction (2a) after passing the amplifier date photo (13).

iIa*... Time t2 when the conveyed object started from the delivery conveyor (6) of the induction (2C) arrives at the induct photo (9) t2 - e The delivery conveyor (6) of the induction (2b) was started Time for the conveyed object to arrive at the induct photo (9).

1j... Time for the conveyed object that started from the delivery conveyor (6) of the induction (2a) to arrive at the induction photo (9).

tw... Transport 3 arrived at Induct Photo (9) Induction with tray ■ (2) Time to arrive at the opposite end of the line.

2 tp...The time interval at which the traveling wheel of the tray (J) passes through the update fo)' f131 is 0. Set the following relationship between each set time shown in Fig. 1, tup, -(t++ tw ) = t+)+≧0 However, tp≧tc+tupz (tz+tw)= ta2≧
0 However, tp≧1e2tup, −(b+tw)=t
G3≧0, but tp≧tG3tel cow tG3 in tc2.

The tel, tG2, and tG3 are each induction (2
This is the delivery error time depending on the length of each conveyed object passing through a), (2b), (2c), and so on. This correction is linked to the delivery conveyor (6). Pulse oscillator (5)
The concept of conveyed object length detection interlock photo length correction is shown above.

At tl, t3, and t3 shown in FIG. 1, the conveyed object passes through the state in which it is being discharged from the conveyor (6), being discharged after a temporary stop, being discharged in the middle of deceleration, or being discharged without being decelerated at all. Time correction is required.

For this correction, a present photo aυ is attached to the tip of the delivery conveyor (6) as shown in FIG. 5 (1), and the present photo is set as shown in FIG. 5 (1). At this time, (4) in Figure 5
The Nth present photo (N) is placed so that a relationship of 11° during tH is established between LH and tr shown in , and the error time due to the state of being delivered is determined by setting the acceleration/deceleration of the delivery conveyor (6). can be corrected.

In addition, when the vehicle is discharged during deceleration, the time is tH≧tM≧
Due to the relationship between tL, it is included in the difference between ta and tL.

In addition, the number of present photos 0υ in (1) of FIG. 5 is determined from the tail edge photo α0) to (2) of FIG. )+3) Install to the deceleration start position shown in (3).

Next, we will discuss the sorter chain and sorter speed fluctuation errors.

The sorter chain exhibits a g-linear elongation rate in the straight section of each sorter (1) shown in FIG.

Therefore, by installing the amplifier date photo 03) at necessary locations on the straight line portion excluding the curved portion in FIG. 2, the influence on the elongation of the sorter chain can be ignored.

The sorter speed fluctuation error is caused by the sorter drive unit (16)
The pulse oscillator (generated by 3) interlocked with If time is tupLiAX, then the relationship tup=tupMAX+ts holds true.

Each induction (2c) (2b) of the above tupMAX
)(2a) * * tupI, t in the relational expression of e - *
up2, tups and each ts is ts5 is2, t
By setting ss, the above relationship becomes tupI −(t++t w)= tGt +tsl≧
0 However, tp≧tGx+tsstupz-(t2+tv)
= tc2+tBz≧0 but tp≧tG2+tsztu
p3-(is+tw)=tGa+tsa≧0, but t
p≧t os+t 8Jtc, +t 02 + in tsl
It can be set as tSzkitc3+ts3.

tupl'' in the above formula tup3, t1~tj, tw
are all fixed values, and tO] to tGs is transfer error correction time depending on the conveyed object length t31-ts3 is sorter speed fluctuation error correction time.

Referring to FIG. 4, an explanation will be given of the induction payout order when each induction (2) portion is adjusted so that the error correction described above is satisfied.

&1 payout reservation and ya2 payout reservation shown in FIG. 4 are reservation tables in which the payout reservation order from induction is entered, and the contents include induction boiling, etc.

The reservation priority is A1, and when B1 is reset, the contents of Raku2 are shifted to YA1.

Induction status table A1 for induction, &
For 2 induction and A3 induction, register the status of each induction: 0 Self-induction reserved, Self-induction upstream full, 40 Self-dispensing conveyor present photo, Incoming object detected, etc. (.

The content search is performed on the location pointed to by the induction pointer (29). Also, the induction pointer (2
In 9), when the contents of the &2 payout reservation table are empty, the induction state tables are sequentially searched, and the induction (2) for which the payout conditions are set is first registered in the Ya2 payout reservation table, and the search is stopped.

In principle, the objects to be conveyed are started from the induction delivery conveyor in accordance with the order in which (each present fo) (11) detects the objects to be conveyed. However, at this time, in order to average out the amount of output from each induction, the same induction grave is not registered in &1 and &2 reservations, so 5 is set.

FIG. 3 shows an induction control plot of the present invention.

Next, we will discuss the case where a full state occurs on the upstream side of the induction.

Depending on the number of inductions in the upstream full state, the level is set in the full priority level table ■ Only one induction upstream side is full ■ Only multiple inductions upstream sides are full ■ All inductions/induction upstream sides are full or all four inductions are full isn't it.

Register separately as follows.

As mentioned earlier, the conveyed objects are started from the delivery conveyor at the ■level, so that they are averaged from each induction, but at the ■ and ■levels, the start of the conveyed goods from the delivery conveyor is performed in accordance with the full priority level for each induction that is in the upstream full state. After continuing the payout priority state for a certain period of time, full registration on the upstream side of the induction is prohibited for a certain period of time. By this method, the upstream side of the induction is not full, and the sorter (1) can be used efficiently.

According to the payout reservation method shown in FIG. 4, the number of payout reservations and the number of tables are given by The part corresponding to can be made to correspond to the induction state table search part.

The conveyed object is started from the induction (2) in accordance with the order and timing described above when the tray travel wheel passes the update photo α rise immediately before the induction.

As is clear from the above description, according to the present invention, it is possible to perform stable discharging from the induction (2), and to operate the sorter (1) efficiently in accordance with the state of each induction.

Furthermore, since the induction arrangement does not need to match the pitch of the trays, there are fewer restrictions on layout compared to conventional systems.

As described above, the present application installs a plurality of inductions in a tray type sorter, and in each induction, from the tray plastic sorter side, a loading conveyor, an infeed conveyor, a discharge conveyor having a pulse oscillator, a pressure conveyor, and a supply conveyor are connected in order. An induct photo is placed near the tip of the loading conveyor, a tail edge photo is placed near the tip of the discharging conveyor, and a present photo and a length detection interlock photo are placed behind it. An update photo is placed in front of the No. 1 noise induction installation location, and updates the conveyance amount on the upstream side of the induction, the starting state of the conveyed object, the length of the conveyed object, the elongation of the sorter chain, and the sorter speed fluctuation. It is characterized by efficiently and stably supplying the conveyed material from the induct photo exit part to the tray while taking into account photo, tail edge photo, present photo, interlock photo, etc., so it can easily achieve the desired purpose. It is something that can be done.

[Brief explanation of drawings]

Fig. 1 is an enlarged plan view of the main parts of the conveyor, Fig. 2 is an overall schematic plan view of the conveyor, Fig. 3 is an induction control block diagram, Fig. 4 is a conceptual diagram of the dispensing reservation, and Fig. 5 (1)
) (2) (3) and (4) are progress explanatory diagrams when the conveyed object passes on the conveyor. Patent applicant: Toyo Kanetsu Co., Ltd. Figure 1 Figure 2 Figure 4 Figure 5 I's Summer Figure 5-2

Claims (1)

[Claims] (1) Install multiple inductions in a tray-type sorter, arrange the loading conveyor and supply conveyor in this order from the tray-type sorter side in each induction, and place the induct photo near the tip of the loading conveyor and the tip of the dispensing conveyor. A tail edge photo is placed near the tail edge photo, a present photo and a length detection interlock photo are placed behind it, and an update photo is placed before the No. 1 induction installation location on the upstream side of the tray type sorter. Before conveying the side, the starting condition of the conveyed object, the length of the conveyed object, the elongation of the sorter chain, and the fluctuation of the sorter speed are taken into consideration using update photos, induct photos, tail edge photos, present photos, interlock photos, etc. An induction control method for a tray type sorter, which is characterized by efficiently and stably supplying conveyed items from the unloading section to the tray.