JPH0585614A - Speed control system for connected conveyor - Google Patents

Abstract

PURPOSE:To provide a speed control system for a connected conveyor which is so arranged as to enable smoothly shipping/receiving a work such as a bundled newspaper between each appliance and the connected conveyor even when the work is such an easily deformable one. CONSTITUTION:The speed control system for a connected conveyor comprises a memory section 13 for storing respective work-carrying speeds of an upstream conveyor, a wrapping machine, and a binding machine, speed detectors 36, 37 each for detecting the carrying speed of its corresponding connected conveyor, and position detectors 31 to 35 for detecting the position of a work at the upstream conveyer, wrapping machine, binding machine, and connected conveyor. The speed control system further comprises a main control section 11 which makes a control to cause coincidence between the carrying speed of a first connected conveyor 23 and the carrying speed of the upstream conveyor and wrapping machine, and between the carrying speed of a second connected conveyor 25 and the carrying speed of the wrapping machine and binding machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed control system for connecting conveyors in a factory line in which connecting conveyors are installed between the equipments, and more particularly, to a connecting conveyor between the equipments and the connecting conveyors. The present invention relates to a speed control system for a connection conveyor, in which the transfer speeds of the equipment and the connection conveyor are made to match when the work is transferred between the conveyor and the equipment.

[0002]

2. Description of the Related Art In a conventional factory line in which a connection conveyor is installed between devices, the work transfer speed of a device located upstream of the connection conveyor and the work transfer speed of a device located downstream of the connection conveyor are , The work transfer speed of the connecting conveyor was set to an intermediate speed.

For example, when the work transfer speed of the equipment located on the upstream side is 60 m / min and the work transfer speed of the equipment located on the downstream side is 40 m / min, the transfer speed of the connecting conveyor is 50 m / min which is the middle thereof. Was set to minutes.

[0004]

Therefore, when the work is transferred from the upstream device to the connection conveyor or when the work is transferred from the connection conveyor to the downstream device, the speed difference causes an unnecessary load on the work. was there.

In particular, when the work is a newspaper bundle or the like, the load at the time of transfer causes the load to collapse, and the bottom newspaper of the newspaper bundle which is in contact with the conveyor belt is wrinkled. There was a problem such as tearing.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide such a work between each device and a connection conveyor even if the work is a newspaper bundle that easily collapses. An object of the present invention is to provide a speed control system for a connected conveyor, which enables smooth delivery of products.

[0007]

In order to solve the above problems, a speed control system for a connected conveyor according to the present invention includes a storage unit for storing a work transfer speed set for each device, and a connection conveyor. A speed detection unit that detects a transfer speed, a position detection unit that detects the position of the work in each of the devices and the position of the work on the connection conveyor,
When the factory line is in operation, when the position detection unit detects that there is a work in the device located upstream of the connection conveyor, the transport speed of the upstream device read from the storage unit and the speed detection The speed of the connection conveyor is controlled so that the conveyance speed of the connection conveyor detected by the unit matches, and when the presence of the work on the connection conveyor is detected by the position detection unit, it is read from the storage unit. In addition, the control unit controls the speed of the connection conveyor so that the transfer speed of the downstream device and the transfer speed of the connection conveyor detected by the speed detection unit match.

[0008]

In the storage unit, the work transfer speed of each device installed in the factory line is stored. This transfer speed data may be input in advance, but the work transfer speed of each device may be detected when the factory line is operating, and the detected speed may be stored.

Further, each device and the connecting conveyor are provided with a position detecting section for detecting the position of the work carried in. The position detection of the work here means specifically confirming that the work has been carried into each device and the connection conveyor.

The control unit controls the speed of the connected conveyor according to the detection signal from the position detection unit.

That is, when a work is carried into the equipment located upstream of the connection conveyor, the position detection section detects it and sends a position detection signal to the control section. The control unit confirms by the position detection signal that the work is in the upstream device. The control unit then compares the transport speed of the upstream device read from the storage unit with the transport speed of the connection conveyor provided by the speed detection unit, and the transport speed of the connection conveyor is determined by the upstream device. The speed of the connecting conveyor is controlled so as to match the transfer speed. Specifically, when the transport speed of the equipment on the upstream side is 60 m / min and the transport speed of the connection conveyor is 50 m / min, control is performed to increase the transport speed of the connection conveyor from 50 m / min to 60 m / min. To do.

As a result, when the work is transferred from the upstream device to the connection conveyor, both transfer speeds match, so that the work can be transferred smoothly from the upstream device to the connection conveyor without receiving an unnecessary load. become.

On the other hand, when the work is carried into the connection conveyor, the position detecting section detects it and sends a position detection signal to the control section. The control unit confirms that the work has been carried into the connection conveyor by this position detection signal. Then, the control unit compares the transport speed of the downstream device read from the storage unit with the transport speed of the connection conveyor provided from the speed detection unit, and the transport speed of the connection conveyor is determined by the downstream device. The speed of the connecting conveyor is controlled so as to match the transfer speed. Specifically, when the transport speed of the equipment on the downstream side is 40 m / min, the transport speed of the connection conveyor is 60 m / min. Therefore, the transport speed of the connection conveyor is reduced from 60 m / min to 40 m / min. Control.

As a result, when the work is transferred from the connection conveyor to the equipment on the downstream side, the transfer speeds of both are the same, so that the work can be smoothly transferred from the connection conveyor to the equipment on the downstream side without receiving an unnecessary load. become.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 shows an example of a factory line to which the speed control system of the present invention is applied.

This factory line is a line for packaging and binding a predetermined number of newspapers to a shipping site.
That is, an upstream conveyor 22 that conveys works (newspaper bundles) 21 from an upstream device (not shown), a wrapping machine 24 that wraps the works 21, a tying machine 26 that ties the wrapped works 21, a upstream conveyor 22 and a wrapping machine. It is configured by a first connecting conveyor 23 installed between the packaging machine 24 and the bundling machine 26 and a second connecting conveyor 25 installed between the packaging machine 24 and the bundling machine 26.

Then, in the vicinity of the unloading side of the upstream conveyor 22, in the proper place of the first connecting conveyor 23 (in the present embodiment, in the central portion), in the vicinity of the unloading side of the packaging machine 24, and the second connecting conveyor 2.
First to fifth position detectors 31 to 35 for detecting the workpieces 21 flowing on the conveyor are provided near the appropriate positions of 5 (in the present embodiment, the central portion) and near the unloading side of the binding machine 26. ing. Also, the first connecting conveyor 23 and the second
In the vicinity of the connection conveyor 25, first and second speed detectors 36 and 37 for detecting the conveyor transfer speed are provided, respectively.

FIG. 1 is a block diagram showing the electrical construction of the speed control system of the present invention.

In the figure, the main controller 11 for controlling the operation of the entire system includes the outputs of the first to fifth position detectors 31 to 35 and the first and second speed detectors 3 as described above.
Outputs of 6 and 37 are introduced. In addition, the main controller 1
An output of an operation input unit 12 including a keyboard and the like is led to 1, and the main control unit 11 and the storage unit 13 are bidirectionally connected.

The operation input unit 12 is a block for inputting various data such as transport speed data when the upstream conveyor 22 is operating, transport speed data when the packaging machine 24 is operating, and transport speed data when the binding machine 26 is operating. Is. Also, the storage unit 1
Reference numeral 3 is a block for storing each conveyance speed data input from the operation input unit 12. Where the upstream conveyor 2
2. The transport speed during operation of the packaging machine 24 and the binding machine 26 is
When there are a plurality of types depending on the type of the work 21, the plurality of types of transport speed data are stored respectively.

The output of the main control unit 11 is led to the first drive control unit 14 and the second drive control unit 15, and the first drive control unit 14 and the second drive control unit 15 are provided.
The output of the drive control unit 14 is led to a drive unit (not shown) of the first connection conveyor 23, and the output of the second drive control unit 15 is led to a drive unit (not shown) of the second connection conveyor 25.

The main control unit 11 controls the position detectors 31 to 35.
Position detection signal of the work 21 from each and each speed detector 3
Based on the transfer speed data of the connection conveyors 23 and 25 from 6, 37 and the transfer speed data stored in the storage unit 13, the drive control unit 14 outputs speed control signals corresponding to the connection conveyors 23 and 25. , 15 are output. The drive control units 14 and 15 drive the drive units of the connection conveyors 23 and 25 in accordance with the speed control signal.

Next, the operation of the speed control system having the above structure will be described with reference to the flow charts shown in FIGS. However, FIG. 3 is a flowchart illustrating the operation of the first connecting conveyor 23, and FIG. 4 is a flowchart illustrating the operation of the second connecting conveyor 25.

First, the operation input section 12 is operated to input the transport speed data of the upstream conveyor 22, the packaging machine 24 and the binding machine 26. This input data is stored in a predetermined storage area of the storage unit 13 via the main control unit 11 (step S1). In this embodiment, the conveying speed of the upstream conveyor 22 is 20 m / min, and the conveying speed of the packaging machine 24 is 6 m.
It is assumed that the storage unit 13 stores one type of transport speed data of 0 m / min and 40 m / min as the transport speed of the binding machine 26. However, when the upstream conveyor 22, the packaging machine 24, and the bundling machine 26 are controlled at a plurality of transport speeds depending on the type and state of the workpieces 21 to be transported, the storage section 13 stores the upstream conveyor 22, the packaging machine, and the packaging machine. A plurality of types of transport speed data are held in each of the 24 and the binding machine 26.

After inputting the necessary data in this way, the factory line is operated (step S2). The transport speeds of the upstream conveyor 22, the packaging machine 24, and the binding machine 26 at this time are the transport speeds stored in the storage unit 13. Further, at the start of operation of the factory line, the transport speed of the first connecting conveyor 23 is set to 40 m / min which is intermediate between the transport speed of the upstream conveyor 22 of 20 m / min and the transport speed of the packaging machine 24 of 60 m / min. The transport speed of the second connecting conveyor 25 is intermediate between the transport speed of the packaging machine 24 of 60 m / min and the transport speed of the binding machine 26 of 40 m / min.
It shall be set to m / min.

In this state, when the work carried by the upstream conveyor 22 is sent to the vicinity of the carry-out side, the first position detector 31 detects it and sends a position detection signal to the main controller 11. Send (Steps S3, S
4). When the main control unit 11 confirms that the workpiece 21 has been conveyed to the vicinity of the unloading side of the upstream conveyor 22 by this position detection signal, the main control unit 11 obtains the transportation speed data (20 m / min) of the upstream conveyor 22 from the storage unit 13. At the same time as reading, the transport speed data (40 m / m) of the first connection conveyor 23 at that time detected by the first speed detector 36 is read.
Minute) is received (step S5). Then, based on the comparison between the two transfer speed data, a speed control signal for matching the transfer speed of the first connecting conveyor 23 with the transfer speed of the upstream conveyor 22 is output to the first drive controller 14 (step S).
6). In the case of the present embodiment, this speed control signal is an instruction signal for reducing the transfer speed of the first connecting conveyor 23 to 20 m / min.

The first drive controller 14 drives and controls the drive unit of the first connecting conveyor 23 in accordance with this instruction signal, and reduces the conveying speed of the first connecting conveyor 23 from 40 m / min until then to 20 m / min. Then, the conveyance speed of the upstream side conveyor 22 (20 m / min) is matched (step S7).
It should be noted that the installation position of the first position detector 31 indicates the time taken for the work 21 to move from the detection position of the work 21 to the carry-out position of the upstream conveyor 22, so that the first drive controller 14 controls the first connection conveyor 23. The deceleration control may be performed so as to decelerate to 20 m / min within this time.

As a result, when the work 21 is transferred from the upstream conveyor 22 to the first connecting conveyor 23, both transport speeds match (in this case, 20 m / min), so the work 21 moves from the upstream conveyor 22. The first connecting conveyor 23 will be transferred smoothly.

On the other hand, the work 21 is attached to the first connecting conveyor 23.
Is carried in, the second position detector 32 detects it,
A position detection signal is sent to the main controller 11 (step S
8, S9). When the main control unit 11 confirms that the work 21 has been carried into the first connecting conveyor 23 by this position detection signal, the main control unit 11 reads the transport speed data (60 m / min) of the packaging machine 24 from the storage unit 13 and also The current transfer speed data (20 m / min) of the first connection conveyor 23 detected by the speed detector 36 is received (step S10). Then, based on the comparison between the two transfer speed data, a speed control signal for matching the transfer speed of the first connecting conveyor 23 with the transfer speed of the packaging machine 24 is output to the first drive control unit 14 (step S11). In the case of the present embodiment, this speed control signal is an instruction signal for increasing the transport speed of the first connecting conveyor 23 to 60 m / min.

The first drive control unit 14 drives and controls the drive unit of the first connecting conveyor 23 in accordance with this instruction signal to increase the transport speed of the first connecting conveyor 23 from 20 m / min until then to 60 m / min. To match the transport speed (60 m / min) of the packaging machine 24 (step S12). It should be noted that depending on the installation position of the second position detector 32 (in the present embodiment, the central portion), the work 21 can be moved from the detection position of the work 21.
Since the time to move to the carry-out position of the first connection conveyor 23 can be known, if the speedup control of the first connection conveyor 23 by the first drive control unit 14 is performed so that the speed is increased to 60 m / min within this time. Good.

As a result, when the work 21 is transferred from the first connecting conveyor 23 to the packaging machine 24, the two conveying speeds match (60 m / min in this case).
The work 21 is smoothly transferred from the first connecting conveyor 23 to the packaging machine 24.

Next, after the work 21 is packaged by the packaging machine 24, when the packaged work 21 is sent to the vicinity of the unloading side of the packaging machine 24, the third position detector 33.
Detects this and sends a position detection signal to the main controller 11 (steps S31, S32). In the main control unit 11, the work 21 packed by the position detection signal is transferred to the packing machine 2
When confirming that it was transported to the vicinity of the unloading side of 4,
Transport speed data of the packaging machine 24 from the storage unit 13 (60 m /
Min) and also receives the transport speed data (50 m / min) of the second connecting conveyor 25 at that time detected by the second speed detector 37 (step S3).
3). Then, based on the comparison between the two transfer speed data, a speed control signal for matching the transfer speed of the second connection conveyor 25 with the transfer speed of the packaging machine 24 is output to the second drive control unit 15 (step S34). In the case of the present embodiment, this speed control signal changes the transfer speed of the second connecting conveyor 25 to 60 m /
It is an instruction signal to accelerate to the minute.

The second drive controller 15 drives and controls the drive unit of the second connecting conveyor 25 in accordance with this instruction signal to increase the conveying speed of the second connecting conveyor 25 from 50 m / min until then to 60 m / min. To match the transport speed (60 m / min) of the packaging machine 24 (step S35). Depending on the installation position of the third position detector 33, the work 2
Since it is possible to know the time for the work 21 to move from the detection position of 1 to the carry-out position of the packaging machine 24, the speedup control of the second connection conveyor 25 by the second drive control unit 15 is performed within 6 hours within this time.
The speed may be increased to 0 m / min.

As a result, when the work 21 is transferred from the packaging machine 24 to the second connecting conveyor 25, the two conveying speeds match (60 m / min in this case).
The work 21 is smoothly transferred from the packaging machine 24 to the second connection conveyor 25.

Next, the work 21 is transferred to the second connecting conveyor 25.
Is carried in, the fourth position detector 34 detects this,
The position detection signal is sent to the main controller 11 (step S3).
6, S37). When the main control unit 11 confirms that the work 21 has been carried into the second connection conveyor 25 by this position detection signal, the main control unit 11 reads out the transport speed data (40 m / min) of the binding machine 26 from the storage unit 13, and The current transfer speed data (60 m / min) of the second connection conveyor 25 detected by the speed detector 37 is received (step S38). Then, based on the comparison of the two transfer speed data, a speed control signal for matching the transfer speed of the second connecting conveyor 25 with the transfer speed of the binding machine 26 is output to the second drive control unit 15 (step S39). In the case of the present embodiment, this speed control signal is an instruction signal for reducing the transfer speed of the second connecting conveyor 25 to 40 m / min.

The second drive controller 15 drives and controls the drive unit of the second connecting conveyor 25 in accordance with this instruction signal, and reduces the conveying speed of the second connecting conveyor 25 from 60 m / min until then to 40 m / min. The transfer speed of the binding machine 26 (40 m / min) is matched (step S40). It should be noted that depending on the installation position of the fourth position detector 34 (in the present embodiment, the central portion), from the detection position of the work 21 to the work 21.
Since the time to move to the carry-out position of the second connection conveyor 25 is known, the deceleration control of the second connection conveyor 25 by the second drive control unit 15 may be performed so as to decelerate to 40 m / min within this time.

As a result, when the work 21 is transferred from the second connecting conveyor 25 to the binding machine 26, both transport speeds match (40 m / min in this case).
The work 21 is smoothly transferred from the second connection conveyor 25 to the binding machine 26.

Although not shown, the binding machine 26
When the work is transferred from the next to the 3rd connection conveyor,
The work 21 can be transferred smoothly by the control similar to the above. In this case, it goes without saying that the third connecting conveyor is also provided with the position detector and the speed detector.

Further, in the above embodiment, at the start of the operation of the factory line, the transfer speed of the first connecting conveyor 23 is intermediate between the transfer speed of the upstream conveyor 22 and the transfer speed of the packaging machine 24 of 60 m / min. 40m / min which is the second
The transport speed of the connection conveyor 25 is set to 50 m / min which is intermediate between the transport speed of the packaging machine 24 of 60 m / min and the transport speed of the binding machine 26 of 40 m / min. Transport speed 20 of the upstream side conveyor 22 which is
The second connection conveyor 25 is set to the same conveyance speed as m / min.
May be set to the same transport speed as the transport speed of the packing machine 24 on the upstream side of 60 m / min. This way,
The first connecting conveyor 23 is 20 m / min and 60 m / min 2
The speed control may be in stages, the second connecting conveyor 25 may
Since speed control in two stages of m / min and 40 m / min is sufficient, the control becomes simpler.

Further, in the above-mentioned embodiment, the transport speed data of the upstream side conveyor 22, the packaging machine 24 and the binding machine 26 is described as one type, but there are a plurality of transport speed data depending on the type and state of the work 21 to be transported. In the case of controlling by the transport speed, the storage unit 13 holds a plurality of types of transport speed data for each of the upstream conveyor 22, the packaging machine 24, and the binding machine 26. And at this time,
During operation of the factory line, the operator inputs the transport speeds of the upstream conveyor 22, the packaging machine 24, and the binding machine 26 at that time from the operation input unit 12 to instruct the control unit 11, so that the control unit 11 can operate. The transport speeds of the instructed upstream conveyor 22, the packaging machine 24, and the binding machine 26 are recognized, and thereafter, speed control is performed according to the transport speed data.

[0042]

The speed control system for the connection conveyor according to the present invention makes the transfer speeds of the equipment and the connection conveyor match when the work is transferred between the equipment and the connection conveyor and between the equipment and the connection conveyor. Since the control is performed so that the work can be smoothly transferred between the equipment and the connection conveyor and between the connection conveyor and the equipment. Therefore, when the work is like a bundle of newspapers, it is possible to prevent the occurrence of load collapse, wrinkles, tears, etc. when transferring.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a speed control system for a connected conveyor according to the present invention.

FIG. 2 is a diagram showing an example of a factory line to which the speed control system of the present invention is applied.

FIG. 3 is a flow chart for explaining the operation of the first connecting conveyor section according to the speed control system of the present invention.

FIG. 4 is a flow chart for explaining the operation of the second connecting conveyor section according to the speed control system of the present invention.

[Explanation of symbols]

 11 Main Control Section 12 Operation Input Section 13 Storage Section 14 First Drive Control Section 15 Second Drive Control Section 23 First Connection Conveyor 24 Packaging Machine 25 Second Connection Conveyor 26 Bundling Machines 31-35 First to Fifth Position Detectors 36 First Speed Detector 37 Second Speed Detector

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takehiko Masunaga 1-1, Shinmeiwacho, Takarazuka-shi, Hyogo Shinmeiwa Industry Co., Ltd. Industrial Machinery Division

Claims (1)

[Claims] 1. A system for controlling the speed of a connection conveyor in a factory line in which a connection conveyor is installed between devices, the storage storing a work transfer speed set for each device. Part, a speed detection part for detecting the transport speed of the connection conveyor, a position detection part for detecting the position of the work in each device and the position of the work on the connection conveyor, and when the factory line is in operation When the position detection unit detects that there is a work in the device located upstream of the connection conveyor, the transport speed of the upstream device read from the storage unit and the connection detected by the speed detection unit The speed of the connecting conveyor is controlled so that the conveying speed of the conveyor is the same, and the presence of the work on the connecting conveyor is detected by the position detecting unit. When detected, a control unit that controls the speed of the connection conveyor so that the transfer speed of the downstream device read from the storage unit and the transfer speed of the connection conveyor detected by the speed detection unit match. This is a speed control system for connecting conveyors.