JPH0818661B2 - Speed control method of loading line in sorting device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a speed control method for loading cargo smoothly in synchronization with a sorting device whose transport speed changes, and particularly to a raw newspaper stack. It is suitable for transportation such as.

[Prior Art] Conventionally, a sorting apparatus operates a tray type sorting machine at a constant speed, and loads and loads the cargo loaded on an introduction conveyor arranged on the tray sorting machine into the tray of the sorting machine to sort and convey the cargo. To do.

[Problems to be Solved by the Invention] However, the amount of baggage carried in for sorting is not always constant and changes fluidly every day. However, the tray sorter is fixed as described above. Since it is driven at high speed, the amount of baggage is stagnant when the amount of baggage is large, and when the amount of baggage is small, the tray sorter operates in an idle state, which is extremely inefficient.

As a remedy for this, it is conceivable to operate the tray type sorting machine by changing the transfer speed of the tray type sorting machine according to the amount of cargo, but the timing of the tray of the sorting machine and the introduction conveyor that transfers and loads luggage into it Is not easy to match,
It is impossible to accurately transfer and transport the parcel to the tray.

Therefore, in view of the above problems, the present invention has been made to solve the above problems, and controls the introduction conveyor speed of a load to be transferred in proportion to the variable speed operation of the tray type sorting machine to achieve an appropriate accuracy. Another object of the present invention is to obtain a speed control method capable of efficiently carrying packages.

[Means for Solving the Problems] A speed control method of a loading line in a sorting apparatus according to the present invention includes a sorting apparatus that is operated at a variable transport speed and a loading line that loads a load on this transportation path. Arranged,
At least one stage of the introduction conveyor and the fine adjustment loading conveyor are installed in the loading line, and the introduction conveyor and the fine adjustment loading conveyor are provided with independent power sources, and the speeds can be changed independently. And the following steps are included.

(I) The detection device arranged on the receiving side of the introducing conveyor detects the load carried on the introducing conveyor to calculate the loading position of the sorting device, and the transfer speed of the introducing conveyor is set to the conveying speed of the sorting device. Adjust.

(Ii) The detection device arranged in the central part of the final introduction conveyor calculates the volume and weight of the load, and the load position of the load is calculated by the detection device arranged on the discharge side of the introduction conveyor for fine adjustment. Controls the speed of the loading conveyor to determine the final loading timing and issues a command to correct it.

(Iii) Transfer the load transferred on the fine-adjustment loading conveyor to the designated tray of the sorting device.

[Embodiment] An embodiment of the present invention shown in the drawings will be described in detail below.

The sorting device 1 has a large number of trays 2 connected to each other,
The transport speed of the tray 2 can be controlled so that it can be changed to a slow speed so that the tray 2 can be efficiently processed according to the amount of material.

In the case of this embodiment, the loading line 3 is connected with four stages of introduction conveyors 4A, 4B, 4C, 4D and a final stage loading conveyor 5, and the discharging side of the final stage loading conveyor 5 is the above-mentioned. It faces the tray 2, which is the transport path of the sorting apparatus 1. Each of the introduction conveyors 4A, 4B, 4C, 4D and the loading conveyor 5 are individually provided with power such as a variable speed motor or the like so that the speed can be changed independently.

The detection devices 6 to 12 are for detecting the presence or absence of luggage, the detection devices 6 and 7 are arranged on the carry-in side and the discharge side of the first introduction conveyor 4A, and the detection devices 8 and 9 are the second introduction conveyor. 4B
Are arranged on the receiving side and the discharging side, and the detecting device 12 is arranged on the receiving side of the fourth introduction conveyor 4D.

The detection device 13 is arranged on the discharge side of the fourth introduction conveyor 4D, calculates the loading position of the load, controls the speed of the loading conveyor 5 and determines the final timing of loading, and issues a command to correct it. Emit.

The detection device 14 is arranged on the discharge side of the loading conveyor 5 and issues a command to return the speed of each of the above-mentioned introduction conveyors 4A to 4D and the standard speed.

The detection device 15 is arranged in the central portion of the fourth introduction conveyor 4D and determines the volume of the package.

In addition, FIG. 3 is a flow chart for detecting the conveying speed of the sorting apparatus 1, FIG. 4 is a flow chart for detecting load and speed control of the introduction conveyor represented by the first introduction conveyor 4A, and FIG. 5 is a fourth introduction conveyor 4D. And loading conveyor 5
3 is a flowchart relating to detection of cargo and speed control in FIG.

With such a configuration, the sorting device 1 operates the tray 2 on the transfer path at a constant speed, and the loading line is also operated at a constant speed to transfer the load and transfer the load to the tray 2. When the transport speed of the sorting apparatus 1 is increased in order to increase the transport processing capacity due to an increase in the load amount, for example, from the constant speed operation state in which the transport speed is increased, the transport speed becomes It is detected and the% with respect to the reference speed is calculated. On the other hand, the loading line 3 is operated at a constant speed, but when the load is carried into the first introduction conveyor 4A, the detection device 6 detects the load, and as a result, as shown in the flowchart of FIG. When the tray 2 of No. 1 is determined, the transfer speed of the first introduction conveyor 4A is increased so as to be synchronized with the conveyance speed of the sorting apparatus 1, and the cargo is sent at a high speed to the discharge side of the first introduction conveyor 4A. Then, the detection device 7 senses the load again, and the transfer speed of the first introduction conveyor 4A is maintained and the transfer speed of the second introduction conveyor 4B is designated. Then, when the load is transferred from the first introduction conveyor 4A to the second introduction conveyor 4B, the detection device is again used in the same manner as above.
8,9 are activated and send the cargo to the 3rd introduction conveyor 4C,
By operating the detection devices 10 and 11 on the third introducing conveyor 4C, the load is received at the fourth introducing conveyor 4D while maintaining the initial transfer speed. On the receiving side detecting device 12 of the fourth introducing conveyer 4D, when the load whose transfer speed of the fourth introducing conveyer 4D continues to the preceding stage reaches the central portion of the fourth introducing conveyer 4D, the detecting device 15 is activated. Volume of cargo,
The weight and the like are calculated, and in combination with the detection by the detection device 13 on the discharge side, the transfer speed of the loading conveyor 5 at the final stage is compared and calculated with the transfer speed of the sorting device 1 for further fine adjustment. (For this, refer to the flowchart of FIG. 5). Then, when the load is sent to the loading conveyor 5 and transferred, the tray 2 designated by the sorting device 1 is conveyed to the discharge end of the loading conveyor 5, so that the loading conveyor 5
The cargo transferred above is surely transferred to the designated tray 2 and conveyed. At the time of this transfer, the detection device 14 arranged on the discharge side of the loading conveyor 5 is activated to confirm that the load has been transferred to the tray 2, and the speed of the loading conveyor 5 is set to the reference speed. Command to return to.

In this way, the load on the loading line can be reliably transferred to the designated tray of the sorting device.

[Effects of the Invention] The effects of the present invention are as follows.

The loading conveyor 5 for fine adjustment is provided at the end of the introduction conveyor of the loading line 3, and the loading conveyor 5 for fine adjustment is provided by the detection device 15 arranged in the central portion and the detection device 14 arranged on the discharge side. Since the speed is controlled, it is possible to accurately transfer the load to the substantially central position of the tray 2 designated by the sorting apparatus 1 regardless of the slower conveying speed of the sorting apparatus 1.

Since the conveying speed of the sorting apparatus 1 can be freely changed at a slow speed according to the amount of parcels, it can contribute to energy saving and is particularly suitable for conveying raw stacks of newspapers.

[Brief description of drawings]

FIG. 1 is a plan view of a sorting line according to the method of the present invention,
FIG. 2 is a side view of the same, FIG. 3 is a flow chart of the sorting apparatus, FIG. 4 is a flow chart of the introduction conveyor, and FIG.
The figure shows the flow chart of the loading conveyor. 1 ... sorting device, 2 ... tray, 3 ... loading line,
4A, 4B, 4C, 4D …… Introduction conveyor, 5 …… Loading conveyor,
6,7,8,9,10,11,12,13,14,15 ...... Detection device.

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-60-112521 (JP, A) JP-A-61-178315 (JP, A) JP-A-55-48119 (JP, A) JP-A-2- 310209 (JP, A) JP 62-153014 (JP, A) JP 50-79088 (JP, A) Actually opened 53-138387 (JP, U) Actually opened 53-106979 (JP, U) JP-B-40-22544 (JP, B1) JP-B-55-42008 (JP, B2) JP-B-58-18297 (JP, B2) JP-B-58-32133 (JP, B2)

Claims (1)

[Claims] 1. A sorting device which is operated at a variable transport speed, and a loading line for loading packages on the transport path, wherein the loading line has at least one stage of an introduction conveyor and for fine adjustment. The loading conveyor is installed, and the loading conveyor and the loading conveyor for fine adjustment are each equipped with an independent power source so that the speed can be changed independently, and the sorting procedure is characterized by including the following procedure. Speed control method of loading line in. (I) The detection device arranged on the receiving side of the introducing conveyor detects the load carried on the introducing conveyor to calculate the loading position of the sorting device, and the transfer speed of the introducing conveyor is set to the conveying speed of the sorting device. Adjust. (Ii) The detection device arranged in the central portion of the final introduction conveyor calculates the volume and weight of the load, and the load position of the load is calculated by the detection device arranged on the discharge side of the introduction conveyor for fine adjustment. Controls the speed of the loading conveyor to determine the final loading timing and issues a command to correct it. (Iii) Transfer the load transferred on the fine adjustment loading conveyor to the designated tray of the sorting device.