JP2893944B2 - Processing speed control system for canning line - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention controls the processing speed in a can manufacturing line of a can manufacturing factory, particularly a can manufacturing line composed of a series of processing apparatuses having different processing speeds. The present invention relates to a processing speed control system for a can-making line.

<Conventional technology> Conventionally, in a can-making line in a can-making factory, a series of components has continuously processed from punching of a thin metal plate to shipping of a completed can body.

To be more specific, the can-making line includes a cupping press device for punching a cup from a thin metal sheet, a deep drawing device for forming the can body of a predetermined length by deep drawing the cup, and a cleaning device for cleaning the can body. A printing device for printing a predetermined pattern on the outer surface of the cleaned can body, an oven device for fixing the printed pattern, an inner surface processing device for processing the inner surface of the can body, and processing an opening of the can body. The apparatus includes an opening processing device, an inspection device for inspecting whether the can body is defective, and a shipping device for shipping the inspected can body. These devices are connected by a transport line, and the can body is transported by the transport line to a device for performing the next process when the process at the previous stage is completed.

Each component device is provided with a control unit (built-in computer). An operator operates these built-in computers individually to give a target number of processes per unit time. Therefore, these components controlled their own processing speed according to a goal given by the built-in computer.

Further, as described above, the can-making line is composed of a plurality of devices, but the processing speed of the entire can-making line and the relative processing speed between the respective components are determined by the operator while observing the operation conditions. I was adjusting it.

<Problems to be Solved by the Invention> However, in such a conventional apparatus, when an operator sets the target number of processings per unit time of these apparatuses, the processing speed of the entire can making line and the relative speed between the respective constituent apparatuses. Operating the built-in computer while monitoring the target processing speed. For this reason, there is a problem that a large number of operators are required to monitor the processing status of each device, and the production cost is increased.

Also, since the operator manually operated the built-in computer, it took a lot of time to change the settings,
There was a problem that the operation rate of the can-making line was low.

Also, even if the processing speed of some devices is reduced due to, for example, a crash of a can, the operator cannot always adjust the processing speed of each component device optimally. Can't do it. As a result, there is also a problem that it is difficult to accurately deal with the trouble.

Therefore, an object of the present invention is to quickly set a processing speed of each device constituting a can-making line without increasing production costs and without reducing the operation rate of the can-making line. Another object of the present invention is to provide a processing speed control system for a can-making line which can be performed accurately.

<Means for Solving the Problems> As shown in FIG. 1, the present invention is configured such that a plurality of devices are arranged in a line from upstream to downstream, and a semi-finished product is conveyed from upstream to downstream. A processing speed control system for a canning line that controls a processing speed of a canning line in which a finished product is manufactured by being processed by each device. Is selected as the reference device 1, the first device 2 is disposed upstream of the reference device 1, and is assigned a first processing step for making a semi-finished product into a finished product; Device 3 which is arranged on the downstream side of the first device 2 and to which a second processing step for making a semi-finished product a finished product is assigned, and the semi-finished product is temporarily stored immediately before the second device 3. The first accumulator 4 to be placed and the first Monitoring the number of semi-finished products in the accumulator 4 and, if the number of semi-finished products is out of the proper range, a first control means 5 for matching the target processing speed of the first device 2 with the actual processing speed of the second device 3; A third device 6 disposed downstream of the device 1 and to which a third processing step for converting a semi-finished product into a finished product is assigned; and a third device 6 disposed downstream of the reference device 1 and downstream of the third device 6. ,
A fourth device 7 to which a fourth processing step for converting the semi-finished product into a finished product is assigned, a second accumulator 8 for temporarily storing the semi-finished product immediately before the fourth device 7, and a second accumulator 8 in the second accumulator 8. Monitoring the number of stays of the semi-finished product, and if the number of stays is out of the proper range, a second control means 9 for matching the target processing speed of the fourth device 7 to the actual processing speed of the third device 6 It is a processing speed control system.

<Operation> To control the processing speed of a can-making line composed of a plurality of devices using the processing speed control system according to the above configuration, the following is performed.

First, the operator selects one device from among a plurality of devices as a reference device, and supplies target processing speed data to the reference device.

Next, on the upstream side of the reference device, the first control means supplies the data of the target processing speed to each device based on the data of the target processing speed of the reference device. On the other hand, on the downstream side of the reference device, the second control means supplies the data of the target processing speed to each device based on the data of the target processing speed of the reference device, and activates each device.

Then, the first control means monitors the number of stays of the semi-finished product in the first accumulator, and if the number of stays is out of the appropriate range,
The target processing speed of the first device is made to match the actual processing speed of the second device.

Further, the second control means monitors the number of stays of the semi-finished product in the second accumulator, and if the number of stays is out of the appropriate range, matches the target processing speed of the fourth device with the actual processing speed of the third device.

<Effect> As described above, since the first control means and the second control means monitor the processing status of each device, the number of operators can be reduced. As a result, production costs can be reduced.

Further, since the first control means and the second control means perform the setting speed changing operation of each device, the time required for the processing speed setting changing operation can be shortened. As a result, the operation rate of the can manufacturing line can be increased.

Further, since the first control means and the second control means monitor the processing status of each device, and are caused to change the setting of the processing speed, as described above, troubles such as crashes of cans can occur. Thus, even if the processing speed of some devices decreases, it is possible to quickly reset the processing speed of all devices. As a result, accurate processing corresponding to the trouble is easy.

<Example> Hereinafter, an example according to the present invention will be described with reference to the drawings.

2A to 2C are schematic side views illustrating an embodiment of the present invention, wherein FIG. 2B is placed on the right side of FIG. 2A, and FIG. 2C is continued on the further right side of FIG. 2B. The overall configuration of the can making line of this embodiment will be clear.

In FIG. 2A, reference numeral 11 denotes an unwinder. The unwinder 11 unwinds rolls 12 and 13 of a thin aluminum plate (thickness of about 0.3 mm to 0.35 mm) and continuously supplies the rolls to a cupping press 14 as a punching device. .

The cupping press 14 stamps a thin sheet of aluminum to form a cup having a diameter of 7.5 cm to 8.9 cm and a depth of about 3 cm.

The cup continuously formed by the cupping press 14 is drawn and ionized by a simple horizontal transfer device 15.
16 and formed into a can body by deep drawing. The depth of the can body is adjusted by a trimmer 17, and thereafter, the can body is conveyed to a washer 18 as a cleaning device by a simple transport line. In this example, the draw and ioning press was used.
The 16 and the trimmer 17 constitute a deep drawing device.

As shown schematically in FIG. 3, the horizontal transport device 15 moves the can body 19 in the X direction by a jet of air, temporarily holds the can body 19 on the wide accumulator 20, and then discharges the can 21
Are transported one by one. Accumulator above
As shown in FIG. 2A, a drive unit 85 for adjusting the air jet flow rate and a sensor 86 for measuring the number of can bodies stored in the accumulator 20 per unit time are provided in the unit 20. Therefore, the slave computer, which will be described later, can determine the number of can bodies 19 that have passed through the accumulator 20, based on the operation time of the accumulator 20 and the number of can bodies per unit time supplied from the sensor 86.

In the washer 18 (first device), the can body 19 is subjected to pickling and surface treatment for improving corrosion resistance, and then heated and dried. The can body 19 that has undergone the series of processes is supplied from the washer 18 to the base coater 24 via the vertical transport device 22 and the horizontal transport device 23. The horizontal transfer device 23 is provided with an accumulator (not shown), like the horizontal transfer device 15. The accumulator (first accumulator) includes a drive unit 87 and a sensor 88.

In the base coater 24 (second device), the outer surface of the can body 19 is uniformly painted white. Thereafter, these white-painted can bodies 19 are transferred to a base coater oven 25 by a simple transfer line 26.
Carried by. The base coater oven 25 bake and dry the white paint applied to the outer surface of the can body 19. Thereafter, the can body 19 is supplied to the printer 28 by the horizontal transport device 27. The horizontal transfer device 27 is provided with an accumulator (not shown), like the horizontal transfer device 15. The accumulator is provided with a drive unit 89 and a sensor 90.

The printer 28 prints characters and / or figures on the outer surface of the can body 19 painted white. Printed can body 19
Is supplied to the printer oven 30 via a simple transport line 29. Since the printer 28 is designated as the reference device, the data of the target processing speed of each device is calculated and supplied based on the data of the target processing speed of the printer 28.

The printer oven 30 (third device) prints the printed paint, dries it, and fixes a pattern composed of characters, figures, and the like. Therefore, in this embodiment, the base coater 24 and the printer 28 constitute a printing device, and the base coater oven 25 and the printer oven 30 constitute an oven device as a whole.

The can body 19 with the pattern fixed by the printer oven 30 is sent to the vertical transfer device 32 on a simple transfer line 31, and further,
It is carried to the horizontal transfer device 33 as a speed adjustment section. The horizontal transfer device 33 is provided with an accumulator (not shown), like the horizontal transfer device 15. The accumulator (second accumulator) includes a drive unit 91 and a sensor 92.

Then, the horizontal transport device 33 supplies the can body 19 to the inside spray 34 (fourth device), and the inside spray 34
Applies a resin film to the inner surface of the can body 19. The can body 19 having the resin film adhered to the inner surface is supplied to the inside spray oven 36 through a simple transfer line 35, where the resin film is dried and baked. Therefore, in this embodiment, the inside spray 34 and the inside spray oven 36 constitute an inner surface treatment device.

Can body 19 discharged from inside spray oven 36
Is transported by a simple transport line 37 to a necker flanger 38 as an opening processing device, where the opening is subjected to multi-stage drawing. Thereafter, the can body 19 is transferred to a light tester 41 as an inspection device via a simple transfer line 39 and a horizontal transfer device 40. The light tester 41 optically detects a pinhole or the like of the can body 19 and eliminates a defective product.
The horizontal transfer device 40 is provided with an accumulator (not shown), like the horizontal transfer device 15. The accumulator is provided with a drive unit 93 and a sensor 94.

The inspected can body 19 is sent from the light tester 41 to the palletizer 42 as a shipping device, packed in a state sealed with a plastic film, and shipped.

Each device constituting the above-mentioned can making line 11, 14, 16, 18,
24, 25, 28, 30, 34, 36, 38, 41, 42 are built-in computers (built-in computers) 51, 52, 53, 54, 55, 5
6, 57, 58, 59, 60, 61, 62, 63 respectively.

In addition, these built-in computers 51 to 63 have operation panels 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74,
75 and 76.
By operating 76, it is also possible to instruct operating conditions including the processing speed of each device.

The components of the can-making line according to this embodiment are divided into two component devices by a horizontal transfer device 23, and each component device group is automatically operated by slave computers 77 and 78 as information processing devices. Is managed. Also, the slave computer 79 is connected to each horizontal transfer device 1
The number of can bodies 19 held by the accumulators 5, 23, 27, 33 and 40 is grasped and managed.

That is, the slave computer 77 is connected to the built-in computers 51 to 54 via the external bus 80, and
It accepts data indicating the processing status from 1, 14, 16, and 18, and monitors and controls the processing status based on these data.

Further, when any trouble occurs in the device, the slave computer 77 generates an alarm in the device in order to notify an operator of the trouble. For example,
An alarm is generated on the operation panel 64 of the unwinder 11 in order to notify the operator of the replacement of the rolls 12 and 13 of the unwinder 11.

Further, the slave computer 91 creates report data shown in Table 1 below, and supplies the report data to the data memory 103 of the host computer 83 (first control means, second control means) shown below. The CPM indicates the number of can bodies processed per minute.

Note that the host computer 83 requests the slave computer 77 to send a report after a certain period of time by the timer, receives report data from the slave computer 77, and generates operation data indicating the operating conditions of each component as described later. Let it.

The slave computer 77 is a host computer.
An instruction code for the built-in computer is created on the basis of the operation data sent from 83, and an instruction code representing the operating conditions of each device is supplied to the necessary built-in computers 51 to 54.

Similarly, the slave computer 78 is a built-in computer.
55 to 63 are connected via an external bus 81, the device 24,
Data indicating the processing status from 25, 28, 30, 34, 36, 38, 41 is accepted, and the processing status is monitored based on these data. Similarly to the slave computer 77, the slave computer 78 generates an alarm on the operation panel of the device in order to notify an operator of the problem when the device has any trouble. Further, the slave computer 78 creates report data shown in Table 2 below, and supplies the report data to the host computer 83 shown below.

Note that the host computer 83 requests the slave computer 78 to send a report after a predetermined time has elapsed by the timer, and receives report data from the slave computer 78. The host computer 83 creates operation data representing the operating conditions of each component as described in detail below.

The slave computer 78 creates an instruction code for the built-in computer based on the operation data sent from the host computer, and supplies the necessary instruction codes indicating the operating conditions to the necessary built-in computers 55 to 63.

On the other hand, the slave computer 79 has each drive unit 85,
87, 89, 91, 93 and each sensor 86, 88, 90, 92, 94 are connected via an external bus 82, and each horizontal transfer device 15, 2
The data indicating the number of can bodies 19 in the accumulators 3, 27, 33, and 40 are accepted, report data shown in Table 3 below is created, and the report data is supplied to the host computer shown below.

These slave computers 77 to 79 are shown in FIGS.
As shown in FIG.
And is connected via an external bus 84, and is under the control of the host computer 83.

FIG. 4 is a block diagram showing a hardware configuration of a host computer of a control system for a can making line according to one embodiment of the present invention.

The host computer in this figure includes a central processing unit (hereinafter, referred to as a CPU) 101, a program memory 102, a data memory 103, a video memory 104, a graphic controller
105, a DMA controller 106, an interface 107, and the like.

The CPU 101 sequentially fetches instruction codes in the program memory 102 to achieve a given JOB. At the time of starting the system, the CPU 101 determines the standard values of the cupping press 104, the draw and ioning press 16, the washer 18, the base coater 24, the inside spray 34, the necker flanger 38, and the light tester 41 when the target value of the printer 108 is given. . While the system is running, the CPU 101
Creates operation data indicating operating conditions (for example, processing speed) of each device based on report data from each of the slave computers 77 to 79, and stores the operation data in the data memory 103.

The video memory 104 rewritably stores data (message data) representing a message displayed on the display 109. For rewriting, the CPU 101 transfers message data from the data memory 103 to the video memory 104.

The graphic controller 105 sequentially reads out message data from the video memory 104 in response to a request from the CPU 101 and displays the message data on the display 109.

The DMA controller 106 transfers report data, which is periodically sent from the three slave computers 77 to 79 and indicates the processing status of each device, from the interface 107 to the data memory 103 in response to a request from the CPU 101. Also, DM
The A controller 106 transfers operation data to the designated slave computers 77 to 79 via the interface 107 in response to a request from the CPU 101.

The interface 107 has three slave computers 77
After the report data from .about.79 is temporarily stored, the report data is transferred to the data memory 103 in synchronization with the generation of an address by the DMA controller 106. Further, the interface 107 transfers data indicating the processing status of the transfer line transferred from the CPU 101 to the printer 108, and causes the printer 108 to create a report. Further, the interface 107 is connected to the data memory 103
Temporarily stores the operation data sent from
After that, it transmits to the designated slave computers 77 to 79.

Next, the processing procedure in the host computer 83 is described as 5A
This will be described with reference to the flowcharts in FIGS. 5 to 5B and FIGS. 6 to 15.

5A and 5B show a main flowchart of the host computer 83. FIG. In the figure, when the operator starts the system, the host computer 83 executes the initialization of the system, and the host computer 83 and the slave computers 77 to 79 initialize their respective memories. In this initialization, both the IDX flag and the EM flag are initialized (step S1). The IDX flag is a flag for designating any one of the slave computers 77 to 79. When the IDX flag is "0", the slave computer 77 is set. When the IDX flag is "1", the slave computer 78 is set. specify. The EM flag is the printer
28 is a flag for indicating whether or not 28 is an abnormal state “1” or “0”. Specifically, the host computer 83 includes a horizontal transport device located upstream of the printer 28 as a reference device.
If the number of can bodies stored in the accumulator 27 or the accumulator of the horizontal transport device 33 located downstream is outside the appropriate range, it is determined that an abnormal state has occurred in the system, and the EM flag is set to “1”. Is set. On the other hand, when it is determined that the system is in a normal state, "0" is set to the EM flag. The setting of these flags will be described later in detail.

Next, the host computer 83 determines whether or not the operator has supplied the data of the target processing speed to the printer 28 as the reference device (S2). If the determination result is NO, since the operator has not supplied the data of the target processing speed to the printer 28, step S2 is repeatedly executed until the operator supplies the data of the target processing speed to the printer 28.

On the other hand, if the decision result in the step S2 is YES, the CPU 101 of the host computer 83 refers to the data of the target processing speed of the printer 28 given in the step 2 to create a standard processing value of each device described below. (S3). That is, a cupping press 14 (CP _n ), a draw and ioning press 16 (DI _n ), a washer 18 (WS _n ), a base coater
The standard processing values of 24 (BS _n ), inside spray 34 (IN _n ), necker flanger 38 (NF _n ), and light tester 41 (LT _n ) are determined in conjunction with the target processing value of the printer 28.

Then, the CPU 101 sets the standard processing values CP _n , DI _n , WS _n , B
S _n , IN _n , NF _n , and LT _n are stored in the data memory 103 as operation data CP _x , DI _x , WS _x , BS _x , IN _x , NF _x , and LT _x at the time of starting each device (S4). .

Next, CPU 101 is a DMA controller 106 to the operation data _{CP x, DI x, WS x} , BS x, IN x, NF x, it instructs the transfer LT _x to each device (S5).

Then, CPU 101 is executing the update subroutine operations data CP _x to LT _x, the timer interrupt occurs during the execution of these update subroutine, running timer interrupt subroutine to be described later to stop execution of the update subroutine routine The above-described report data indicating the processing status of each device is received. Therefore, the updated operation data is always created based on the latest report data.

CPU101 first executes the update operations data CP _x (S6). That is, as shown in the flowchart of FIG. 7, first, the CPU 101 stores the number of stays Ac1 of the can body in the accumulator of the horizontal transport device 15 from the data memory 103.
And the number of processes per minute of the draw and ioning press 16 CP
Read M _di (S51).

Next, the CPU 101 determines whether or not the stay number Ac1 of the can body is within an appropriate range (S52). If the judgment is YES,
Since residence number Ac1 of the can body is in the proper range, and sets the CPM _di to operation data CP _x (S53). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, if the decision result in the step S52 is NO, since the stay number Ac1 of the can body is outside the appropriate range, it is determined whether or not the stay number Ac1 of the can body is excessive (S54).

If the decision result in the step S54 is YES, the stay number Ac of the can body is Ac
Since 1 is excessive, by subtracting the number X ₁₁ from the operational data CP _x given before running this subroutine in order to reduce the number of processing is set to the value again operational data CP _x (S55). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, if the decision result in the step S54 is NO, the operation data before executing this subroutine in order to increase the number of processes, because the number of stays Ac1 in the can body is too small,
Was added to the CP _x predetermined number X _12, is set to the value again operational data CP _x (S56). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow. As described above, the target number of processes of the cupping press 14 is increased or decreased according to the number of processes of the downstream device (draw and ioning press 16) while referring to the number of stays in the accumulator.

Then, the main flow, CPU 101 instructs the transfer of operational data CP _x, which is the update to the DMA controller 106 (S7).

Next, CPU 101 executes the update subroutine operations data DI _x (S8). That is, as shown in the flowchart of FIG.
From 103, the number of stays Ac2 of the can body in the accumulator of the horizontal transfer device 23 and the number of processes CPM _bs per minute of the base coater 24 located downstream of the horizontal transfer device 23 are read (S61).

Next, the CPU 101 determines whether or not the stay number Ac2 of the can body is within an appropriate range (S62). If the judgment is YES,
Since the number of stays Ac2 in the can body is within an appropriate range, the CPM _bs is set in the operation data DI _x (S63). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, if the decision result in the step S62 is NO, since the stay number Ac2 of the can body is not within the proper range, the CPU 101 determines whether or not the stay number Ac2 of the can body is excessive (S64).

If the decision result in the step S64 is YES, the stay number Ac of the can body is Ac
Because 2 is excessive, drawing and iodide training subtraction to reduce the number of processing of the press 16 from the operational data DI _x before executing this subroutine predetermined number X _21, and sets the value again operational data DI _x (S65). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, if the decision result in the step S64 is NO, since the number of stays Ac2 in the can body is too small, the operation data before executing this subroutine in order to increase the number of the processes is increased.
From DI _x by adding a predetermined number of X _22, is set to the value again operational data DI _x (S66). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow. As described above, the number of processes of the draw and ioning press 16 is increased or decreased according to the number of processes of the base coater 24 while referring to the number of stays in the accumulator Ac2.

Then, the main flow, CPU 101 instructs the transfer of operational data DI _x which is the update to the DMA controller 106 (S9).

Next, the CPU 101 executes an operation data WS _x update subroutine (S10).

That is, as shown in the flowchart of FIG. 9, first, the CPU 101 reads the number of processes CPM _bs per minute of the base coater 24 and the current number of processes CPM _b of the washer 108 from the data memory 103.
_ws and the number of processes CPM _w10 of the washer 18 for 10 minutes to the number of processes CPM _w1 of one minute before are read out (S71).

Next, the CPU 101 calculates the processing number CPM one minute before the washer 18.
The values from _w1 to the processing number CPM _w10 10 minutes before are summed, and the value is set in S1 (S72).

Then, the number of processes 1 minute before the washer 18 CPM _w1 to 9
Number of processes before minute CPM New value up to _w9 , number of processes C two minutes ago
Set the processing number CPM _w10 10 minutes before PM _w2 ,
The value of the current processing number CPM _ws is set to the processing number CPM _w1 one minute ago (S73).

Next, the CPU 101 sets the newly set 1 of the washer 18.
The values from the processing number CPM _w1 minutes ago to the processing number CPM _w10 10 minutes ago are _summed up again and the value is set in S2 (S74).

Then, the CPU 101 subtracts S1 from S2 and sets the value to ΔS
(S75). That is, the CPU 101 is the washer 1
The degree of change is determined with the total number of processes S2 from 1 minute before 10 to 10 minutes and the total number of processes S1 from 2 minutes to 10 minutes before.

Next, the CPU 101 checks whether the value of ΔS does not change (ΔS =
0), increase (ΔS> 0) or decrease (ΔS <0) (S76). If the result of the determination is ΔS = 0, the total number of processes S2 for 10 minutes from 1 minute before the washer 18 and the total number of processes S1 for 10 minutes from 2 minutes before have not changed. Processed number of CPM
_bs is set in the operation data WS _x (S77). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, if the determination result of step S76 is ΔS <0, 1
The total processing number S2 for 10 minutes from the minute before is smaller than the total processing number S1 for 10 minutes from 2 minutes before. Therefore, the CPU 101
In order to increase the processing speed, this subroutine to operation data WS _x before executing a predetermined number X ₃₁ adds, to set its value again operational data WS _x (S78). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

Further, if the determination result of step S76 is ΔS> 0,
The total number of processes S2 from one minute before to 10 minutes is larger than the total number of processes S1 from two minutes before to 10 minutes. Therefore, CPU101
Is a predetermined number X from the operation data WS _x before executing this subroutine in order to reduce the number of processes.
Subtract ₃₂ and return the value again to the operation data WS _x
(S79). And the host computer 83
Ends the execution of this subroutine and returns to the main flow.

As described above, the target number of processes of the washer 18 is increased or decreased according to the number of processes of the downstream device (the base coater 24) while referring to the number of stays in the accumulator.

And in the main flow, CPU 101 is DMA controller 1
06 to indicate the transfer of the updated operational data WS _x (S11).

Then, CPU 101 executes the update subroutine operations data BS _x (S12). That is, as shown in the flowchart of FIG. 10, first, the CPU 101 reads out the number of stays Ac3 of the can body in the accumulator of the horizontal transport device 27 and the number of processes CPM _pr per minute of the printer 28 from the data memory 103 ( S81).

Next, the CPU 101 determines whether or not the stay number Ac3 of the can body is within an appropriate range (S82). If the judgment is YES,
Since residence number Ac3 the can body is in the proper range, and sets the CPM _pr again operational data BS _x (S83). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, if the decision result in the step S82 is NO, since the stay number Ac3 of the can body is out of the proper range, the CPU 101 determines the stay number Ac3 of the can body.
It is determined whether or not is excessive (S84). If the judgment result is YES, since residence number Ac3 of the can body is excessive, only by subtracting the number X ₄₁ from the operational data BS _x given before running this subroutine in order to reduce the number of processing, the value to set the operation data BS _x again (S85).
Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, if the decision result in the step S84 is NO, since the stay number Ac3 of the can body is too small, the operation data before executing this subroutine to increase the number of processes is
Was added to the BS _x predetermined number X _42, is set to the value again operational data BS _x (S86). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

As described above, the target number of processes of the base coater 24 is increased or decreased according to the number of processes of the downstream device (the printer 28) while referring to the number of stays in the accumulator.

Next, in the main flow, the CPU 101
To instruct the transfer of the updated operational data BS _x (S13).

Then, the CPU 101 executes a printer emergency monitoring subroutine (S14). That is, as shown in the flowchart of FIG. 11, first, the CPU 101 reads the number of stays Ac3 of the can body in the accumulator of the horizontal transfer device 27 and the number of stays Ac4 of the can body in the accumulator of the horizontal transfer device 33 from the data memory 103. Is read (S91).

Next, the CPU 101 determines whether or not the stay number Ac3 of the can body is within an appropriate range (S92). If the judgment is YES,
Since the stay number Ac3 of the can body is within the proper range, it is next determined whether the stay number Ac4 of the can body is within the proper range (S93). If the determination result is YES, the number of stays Ac4 in the can body is in the proper range, that is, since the printer 28 operates normally and processes a certain number of can bodies, the printer 28 is in an abnormal state. "0" is set to the flag EM indicating whether or not there is any (S9
Four). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, the judgment result of step S92 or step S93 is
If NO, the printer 28 operates abnormally and does not process a fixed number of can bodies, so the flag EM is set to "1" (S95). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

Thus, the monitoring of the emergency of the printer 28
Number of residences Ac of the can body in the accumulator of the horizontal transfer device 27
The determination is made in accordance with 3 and the number of stays Ac4 of the can body in the accumulator of the horizontal transfer device 33.

Next, in the main flow, the CPU 101 determines whether “1” is set in the flag EM (S15). If the determination result is YES, the printer 28 operates abnormally and does not process a certain number of cans, so that all operation data CP _x , DI _x , WS _x , BS _x , IN _x , NF _x reduces LT _x (S16), CPU101 instructs the transfer of operational data CP _x to LT _x which is the update to the DMA controller 106 (S1
7).

On the other hand, if the decision result in the step S15 is NO, the printer 2
Since step 8 operates normally and processes a certain number of can bodies, step S18 is executed without executing steps S16 and S17.

Next, the CPU 101 executes an operation data IN _x update subroutine (S18). That is, as shown in the flowchart of FIG. 12, first, the CPU 101 reads out the number of stays Ac4 of the can body in the accumulator of the horizontal transport device 33 and the number of processes CPM _pr per minute of the printer 28 from the data memory 103 ( S101).

Next, the CPU 101 determines whether or not the stay number Ac4 of the can body is within an appropriate range (S102). If the judgment result is YES, since the residence number Ac4 the can body is in the proper range, and sets the CPM _pr to the operation data IN _x (S103). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, if the decision result in the step S102 is NO, since the stay number Ac4 of the can body is out of the appropriate range, the CPU 101 determines the stay number Ac4 of the can body.
It is determined whether or not is excessive (S104). The result is YES
If, because residence number Ac4 the can body is excessive, and subtracted from the previous operation data IN _x predetermined number X ₅₁ to execute this subroutine in order to reduce the number of processing, the value again Operational Data IN _x (S10
Five). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, if the decision result in the step S104 is NO, the operation data before executing this subroutine in order to increase the number of processes, because the number of stays Ac4 in the can body is too small,
Adding from IN _x predetermined number X _52, is set to the value again operational data IN _x (S106). Then, the host computer 83 ends the execution of this subroutine,
Return to the main flow.

As described above, the target number of processes of the inside spray 34 is increased or decreased according to the number of processes of the upstream device (the printer 28) while referring to the number of stays in the accumulator.

Next, in the main flow, the CPU 101
To instruct the transfer of the updated operational data IN _x (S19).

Then, CPU 101 executes the update subroutine operations data NF _x (S20).

That is, as shown in the flowchart of FIG. 13, first, the CPU 101 _reads the current processing number CPM _iox of the inside spray oven 36 from the data memory 103 and one minute before the processing number CPM _{io10 of the} inside spray oven 36 minutes before. The processing number CPM _io1 is read out (S121).

Next, the CPU 101 sets the inside spray oven 36 1
The sum of the values of the partial from previous processing speed CPM _io1 to 10 minutes before treatment number CPM _IO10, sets its value to S3 (S122).

Then, inside the spray 1 minute oven 36 from the previous processing speed CPM _io1 9 minutes before the treatment numbers CPM values up _io9 new, 2 minutes before treatment number CPM _io2 from 10 minutes before the treatment Number CPM _IO10
And the value of the current processing number CPM _iox is set to the processing number CPM _io1 one minute ago (S123).

Next, the CPU 101 sets the inside spray oven 36 1
The sum of the values of the partial from previous processing speed CPM _io1 to 10 minutes before treatment number CPM _IO10 again sets its value to S4 (S124).

Then, the CPU 101 subtracts S3 from S4 and sets the value to ΔS
(S125). That is, the CPU 101 calculates the total number of processes S4 for 10 minutes from one minute before the inside spray oven 36.
And the degree of change from the total number of processes S3 for 10 minutes from 2 minutes ago.

Next, the CPU 101 checks whether the value of ΔS does not change (ΔS =
0), increase (ΔS> 0) or decrease (ΔS <0) (S126). As a result of the determination, if ΔS = 0, the total number of treatments S4 from 1 minute before the inside spray oven 36 for 10 minutes and the total number of treatments S3 from 2 minutes before to 10 minutes have not changed. Number of processes
Set CPM _io10 to operation data NF _x (S12
7). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, if ΔS <0 as a result of the determination in step S126, 1
The total processing number S4 for 10 minutes from the minute before is smaller than the total processing number S3 for 10 minutes from 2 minutes before. Therefore, the CPU 101
In order to increase the processing speed, this subroutine to operation data NF _x before executing a predetermined number X ₆₂ adds, to set its value again operational data NF _x (S128). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

Further, if ΔS> 0 as a result of the determination in step S126,
The total number of processes S4 for 10 minutes from one minute ago is greater than the total number of processes S3 for 10 minutes from two minutes ago. Therefore, CPU101
Is a predetermined number X from the operation data NF _x before executing this subroutine in order to reduce the number of processes.
_{61 is} subtracted, and the value is returned to the operation data NF _x
(S129). And the host computer 83
Ends the execution of this subroutine and returns to the main flow.

In this way, the target number of treatments of the Necker flanger 38 is increased or decreased in accordance with the number of treatments of the upstream apparatus (the inside spray oven 36) while referring to the number of accumulations in the accumulator.

And in the main flow, CPU 101 is DMA controller 1
06 to indicate the transfer of the updated operational data NF _x (S21).

Next, the CPU 101 executes an operation data LT _x update subroutine (S22). That is, as shown in the flowchart of FIG. 14, first, the CPU 101 reads the number of stays Ac5 of the can body in the accumulator of the horizontal transfer device 40 and the number of processes CPM per minute of the Neckar flanger 38 from the data memory 103.
_nf is read (S111).

Next, the CPU 101 determines whether or not the stay number Ac5 of the can body is within an appropriate range (S112). If the judgment result is YES, since the residence number Ac5 the can body is in the proper range, and sets the CPM _nf the operation data LT _x (S113). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, if the decision result in the step S112 is NO, the stay number Ac5 of the can body is outside the appropriate range, so the CPU 101 determines the stay number Ac5 of the can body.
It is determined whether or not is excessive (S114). The result is YES
If, because residence number Ac5 the can body is excessive, it subtracts the number X ₇₁ from the operational data LT _x given before running this subroutine in order to reduce the number of processing, the value again Operational Data LT _x Set to (S11
Five). Then, the host computer 83 ends the execution of this subroutine, and returns to the main flow.

On the other hand, if the decision result in the step S114 is NO, since the stay number Ac5 of the can body is too small, the operation data before executing this subroutine in order to increase the number of processes is increased.
Adding from LT _x predetermined number X _72, is set to the value again operational data LT _x (S116). Then, the host computer 83 ends the execution of this subroutine,
Return to the main flow.

As described above, the target number of processes of the light tester 41 is increased or decreased in accordance with the number of processes of the upstream device (the Necker flanger 38) while referring to the number of stays in the accumulator.

Next, in the main flow, the CPU 101
To instruct the transfer of the updated operational data LT _x (S23).

Then, the CPU 101 creates other operation data and transfers it to a predetermined device (S24).

Next, the CPU 101 executes the operation data CP _x , D
I _x , WS _x , BS _x , IN _x , NF _x , LT _x and the above processing number CPM _cp , CPM
_di , CPM _wx , CPM _bs , CPM _pr , CPM _in , CPM _iox , CPM _nf , CPM
_It is determined whether there is a request to output _lt to the printer 108 (S25). If the judgment result is YES, the CPU 101 sets the DM
A The operation data CP _{x to} LT _x
And an instruction to transfer the above processing numbers CPM _{cp to} CPM _lt to the printer 108 (S26).

On the other hand, if the decision result in the step S25 is NO, a step S25 is executed.
26, the CPU 101 sends the operation data CP _{x to} LT _x and the processing number CPM _{cp to the} DMA controller 106.
To CPM _lt to the video memory 103 (S2
7). Then, the CPU 101 executes the operation data CP _x
LTLT _x and the number of processes CPM _{cp to} CPM _lt are displayed on the CRT 109 (S27).

Then, the CPU 101 repeatedly executes the flow of steps S6 to S27.

The CPU 101 implements a timer with known software, and generates an interrupt each time a predetermined time elapses. When the above interrupt occurs, the CPU 101
The operation data CP _x from the slave computers 77 to 79 designated by the IDX flag to the DMA controller 106.
Order ~ LT _x transfer and restart after reporting its end.

Therefore, the CPU 101 executes the main flow, but when a timer interrupt occurs, the CPU 101 interrupts the execution of the main flow and executes the following program.

First, as shown in FIG. 6, the CPU 101 determines whether or not “0” is set in an IDX flag designating a slave computer (S31). If the determination result is YES, the slave computer 77 is specified, and the IDX flag is set to "1" to specify the next slave computer 78 (S32).

Next, the CPU 101 requests report data from the slave computer 77 (S33).

The CPU 101 interfaces the report data sent from the slave computer 77 specified above with the interface.
DMA controller to transfer from 107 to data memory
Instruct 106 (S34).

On the other hand, if the decision result in the step S31 is NO, the process proceeds to a step S35 because the slave computer 77 is not designated.

Next, in step S35, the CPU 101 determines whether or not “1” is set in the IDX flag designating the slave computer (S35). If the determination result is YES, the slave computer 78 is specified, and the IDX flag is set to "2" to specify the next slave computer 79 (S36).

Next, the CPU 101 requests report data from the slave computer 78 (S37).

Then, the CPU 101 instructs the DMA controller 106 to transfer the report data from the interface 107 to the data memory (S38).

On the other hand, if the decision result in the step S35 is NO, the process proceeds to the step S39 because the slave computer 78 is not designated.

Next, in step S39, the CPU 101 determines whether or not “2” is set in the IDX flag designating the slave computer (S39). If the determination result is YES, the slave computer 79 is specified, so the IDX flag is set to "0" to specify the slave computer 77 again (S40).

Next, the CPU 101 requests report data from the slave computer 79 (S41).

Then, the CPU 101 instructs the DMA controller 106 to transfer the report data from the interface 107 to the data memory (S42).

On the other hand, if the decision result in the step S39 is NO, since the slave computer 79 is not designated, another job is executed, and the process returns to the main flow.

As described above, since the host computer 83 monitors the processing status of each device via the slave computer 79, the number of operators can be reduced. as a result,
Production costs can be reduced.

In addition, since the host computer 83 performs the processing of setting the processing speed of each device via the slave computer 77 and the slave computer 78, the time for the processing of changing the setting of the processing speed can be reduced. as a result,
The operating rate of the can line can be increased.

Further, since the host computer 83 monitors the processing status of each device via the slave computer 79, and changes the processing speed setting via the slave computer 77 and the slave computer 78, as described above, Even if the processing speed of some of the devices is reduced due to a trouble such as a crash, all the devices can be quickly reset. As a result, accurate processing corresponding to the trouble is easy.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a control system of a can-making line according to an embodiment of the present invention by means of function realizing means, and FIGS. FIG. 3 is a schematic side view, FIG. 3 is a plan view of a horizontal transfer device, FIG.
5A to 5B are a main flowchart of the host computer, FIG. 6 is a flowchart of a timer interrupt of the host computer, and FIGS. 7 to 14 are flowcharts of subroutines of the host computer. DESCRIPTION OF SYMBOLS 1 ... Reference apparatus, 2 ... 1st apparatus, 3 ... 2nd apparatus, 4 ... 1st accumulator, 5 ... 1st control means, 6 ... 3rd apparatus, 7 ... 4th apparatus, 8 ...... Second accumulator, 9 Second control means, 14 Cupping press, 16 Draw and ioning press, 18 Washer, 24 Base coater, 28 Printer, 34 Inside spray , 36 …… Inside spray oven, 38 …… Neckar flanger, 77-79 …… Slave computer, 83 …… Host computer.

Claims (1)

(57) [Claims] 1. A plurality of devices are arranged in a line from upstream to downstream, and a semi-finished product is processed by each device while being transported from upstream to downstream, so that a finished product is manufactured. In a can line, in a can line processing speed control system for controlling the processing speed of the can line, when one of the plurality of devices is selected as the reference device, A first device to which a first processing step for arranging a semi-finished product as a finished product is arranged; and a first device upstream of the reference device and downstream of the first device,
A second device to which a second processing step for converting the semi-finished product into a finished product is assigned, a first accumulator for temporarily storing the semi-finished product immediately before the second device, and a retention of the semi-finished product in the first accumulator If the number of stays is out of the proper range and the number of stays is out of the proper range, first control means for matching the target processing speed of the first device to the actual processing speed of the second device; and A third device to which a third processing step for making a finished product is assigned; and a downstream device from the reference device and a downstream device from the third device,
A fourth device to which a fourth processing step for converting the semi-finished product into a finished product is allocated, a second accumulator for temporarily storing the semi-finished product immediately before the fourth device, and a retention of the semi-finished product in the second accumulator Monitor the number,
If the number of stays is outside the proper range, the processing speed control system for the can-making line having a second control means for matching the target processing speed of the fourth device to the actual processing speed of the third device.