JPH0359765B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a cycle in which materials are moved between conveying devices arranged from upstream to downstream of refining equipment that processes materials in a refining factory; That is, the present invention relates to a transport control method that optimizes the transport cycle time and controls the material transport speed.

[Background of the Invention] In a steel pipe finishing (rolling) factory, etc., a large number of finishing equipment are installed to produce products, and a large amount of processing materials are handled, making the logistics thereof complicated. However, the automation of operations for refining equipment has lagged behind, and many rely on manual movement. For example, in one refining process, when one refining process is completed for the processed material and the material is to be transported to the next process, the storage capacity and processing capacity of the next refining equipment for the processed material (whether there is space to place the material, The operator checks each time that the processing specifications are correct, the operating status of the processing equipment is normal, etc., and when it is determined that transport is possible, the operator issues a transport operation command to the transport control device. For this reason, even if materials are transported normally at one finishing facility, it is impossible to grasp the flow of materials between finishing facilities or throughout the factory, and some finishing facilities have material waiting for the next process. In some cases, equipment was left idle because the next processing material had not arrived, leading to a decline in production efficiency at finishing plants.

[Purpose of the invention]

The present invention aims to improve the above-mentioned problems and provide a transport control method that determines the optimal transport cycle time for materials in each transport device so that the processing materials transported to refining equipment are balanced throughout the factory. be.

[Summary of the invention]

The present invention provides a method for controlling the conveyance of processed material in a refining process in which one or more refining equipment consisting of a refining device and a plurality of conveying devices is arranged, in which input processing material refining information for each lot is used. Therefore, a processing capacity weighting factor corresponding to the evaluation value of processing capacity when the processing material is processed in the refining equipment is calculated for each transport device of the refining equipment, and the processing material is moved between the transport devices. The carrying capacity weighting coefficient corresponding to the evaluation value of the processing material carrying capacity of each conveying device which changes in Using the synergistic value of the processing capacity weighting coefficient and the storage capacity weighting coefficient, calculate the transport cycle time of the processing material between the relevant transport devices after moving the processing material, and use the calculated transport cycle time to determine the processing of the relevant transport device. The feature is that the material conveyance speed is determined.

Furthermore, the present invention is characterized in that the calculated transport cycle time between the transport devices is optimized so as to maintain a balance with the transport cycle time of the entire transport equipment.

The weighting coefficient corresponding to the processing capacity of the finishing equipment is determined by the processing of the lot by the finishing equipment based on the finishing information from the host computer, that is, the product specification information of the finishing lot and the physical information of the material. Calculated as an evaluation value of the ideal material conveyance cycle time.

The elements of the weighting coefficient α for processing capacity are α ₁ : Physical specifications of the material (dimensions, weight, etc.) α ₂ : Product specifications of the material (accuracy, number of pieces, etc.) α ₃ : Material processing speed in the finishing equipment α ₄ : Input/output production volume according to the warehousing plan and warehousing plan α ₅ : Material transportation processing cycle according to the production plan α ₆ : Others α=α ₁ + α ₂ + α ₃ + α ₄ + α ₅ + α ₆ = 1 is the maximum value do.

The weighting coefficient corresponding to the material storage capacity of a transport device is calculated for each transport device at the timing of material movement, because when the processing material moves between transport devices, the storage capacity of the previous and subsequent transport devices changes.

The weighting coefficient β of the carrying capacity has the following elements for each conveying device: β ₁ : Amount of material that can be accommodated depending on the layout of the conveying device β ₂ : Conveying speed (time function) β ₃ : Amount of material staying in the conveying device (time function) function) β ₄ : Operating status of the transport device (operation, stoppage, failure, etc.) β ₅ : Others (time function) β = β ₁ + β ₂ + β ₃ + β ₄ + β ₅ = 1 is the maximum value. Note that β ₄ includes external factors and can be set externally by the operator (this includes Δβ shown in the embodiment).

Here, the weighting coefficient β of the carrying capacity is a time-series value that changes every time the material moves between conveyance devices, and is β (t) = β ₁ + β ₂ (t) + β ₃ (t) + β ₄ + β ₅ (t
) and the timing of material movement.

These two factors determine the transport cycle time: the evaluation value determined for each finishing lot (weighting coefficient of equipment processing capacity) and the evaluation value determined for each transporting device (weighting coefficient of equipment capacity). ) is calculated synergistically at the timing when the material to be processed moves between the conveying devices, and the calculated synergistic value is used to correct the material conveyance cycle time value before the material is conveyed between the conveying devices, and the material conveyance after the material is conveyed. Find the cycle time value.

It is determined whether this corrected transport cycle time is balanced among all transport devices, that is, whether the transport cycle time between downstream transport devices is smaller than that between upstream transport devices, and if the transport cycle time between transport devices is If there is a reversal in the transport cycle time, recalculate to correct it, and determine the optimal transport cycle time so that the transport cycle times of all transport devices are balanced. The optimal solution for the transport cycle time is the maximum production when the transport cycle time between the upstream and downstream transport devices is equal, and the transport cycle time is equal to the ideal value determined from the manufacturing specifications of the finishing lot. The quantity will be satisfied.

Furthermore, when controlling the transport of all transport devices using the transport cycle time obtained in the above calculation, the time at which the material to be processed will arrive at each transport device is calculated based on the transport cycle time, and each transport device on the entry side is and provides guidance to the operator display device installed on each transport device on the most exit side. From the arrival time, the operator determines whether the setup status of each finishing equipment is optimal or not. If there is a transport cycle time that seems inappropriate due to factors external to the finishing equipment, the operator can determine the appropriate setting from the operator setting device. A corrected value for the transfer cycle time of the device is input, and the above calculation is repeated using the corrected value to determine the optimum transfer cycle time.

[Embodiments of the invention]

Embodiments of the present invention will be described with reference to FIGS. 1 to 4.

FIG. 1 is a schematic explanatory diagram showing the entire finishing rolling line and its conveyance control equipment, which is an example of the finishing process in which the present invention is carried out. The material to be rolled 62 (expressed in units of lots) stays in a conveying device 53 having a refining device 41, and the conveying devices 52, 54, and 55 before and after the rolling material 61 and the rolled material 6
3.64 people are staying here. This rolled material 61-6
4 is automatically detected as a sensing signal from a group of material sensing sensors 20 to 27 arranged around the conveying device. Based on these sensing signals, the material movement detection device 1 determines for each material between which transport devices the material was moved. Further, conveying devices 51 to 5 for moving the rolled materials 61 to 64
5 moves the material under the control of transport sequencers 28 to 35 provided corresponding to each transport device.

The main part of the fine rolling conveyance control device is comprised of the process computer 42, which is comprised of the following means. Material movement detecting means 1 receives material sensing signals from the sensor groups 20 to 27 and detects material movement, and detects material movement in each transport zone (V1,...,V4) shown in FIG. 2 in synchronization with the material movement timing signal. A tracking table shift means 2 for shifting the trunking table to be managed; a capacity weighting coefficient calculation for calculating the material capacity weighting coefficient β of each conveying device based on the information in the tracking table by moving the material between the conveying devices; Means 3: Receiving product specifications and physical information (steel pipe length, outer diameter, wall thickness, etc.) for each product lot for the rolled material from the host computer 71, and processing the rolled material in the refining device 41. Processing capacity weighting coefficient calculation means 7 that converts the equipment processing capacity into a weighting coefficient α, and accommodation in which an operator sets a correction value Δβ of the capacity weighting coefficient from a man-machine interface device 72 according to the operating status of the finishing equipment 41. Capacity weighting coefficient correction means 8 adjusts the weighting coefficient of the material at the timing of material movement from the synergistic value of the weighting coefficient β of the transporting device and the weighting coefficient α managed for each lot of rolled material staying in the finishing equipment. Conveyance cycle time calculation means 4 for calculating the conveyance cycle time between the devices, compares the calculated conveyance cycle time between the conveyance devices with the conveyance cycle time between the conveyance devices located downstream thereof, and calculates the congestion of material conveyance. If there is a tendency for congestion, recalculate the transport cycle time of all equipment including between the relevant transport equipment, and also between transport equipment located upstream between the relevant transport equipment. The conveyance cycle time optimization means 5 optimizes the conveyance cycle time among all conveyance apparatuses by applying the process described in FIG. A conveyance speed command signal determining means 6 outputs a conveyance speed command signal for the material according to each conveyance cycle time to the conveyance sequencers 28 to 35, and a fine adjustment device located at the most entry side process based on the optimum value of the conveyance cycle time of all conveyance devices. Means 9 for instructing the operator of the equipment the material carry-in cycle time for the pre-finishing process; means 11 for instructing the operator of the finishing equipment located at the most output process the material carry-out cycle time for the post-finishing process; and the finishing process. The system includes means 10 for instructing the operators of each of the conveying apparatuses of the scheduled arrival time of the next material at the lot. The above instructions to each operator are displayed on the display device 73.
~75 is displayed.

The conveyance control method of this fine rolling conveyance control device will be explained with reference to FIGS. 2 to 4.

Figure 2b shows the _V1 zone of the finishing equipment (conveying device 5
5, the transfer cycle time _t1 from device 54 to 55 is controlled (zone), finishing rod A, lot B in _V2 zone, lot C in _V3 zone, lot D in _V4 zone, and lot D in _V5 zone. The figure shows the state in which Lot D is being prepared. The transport cycle time of the trimmed material from V ₂ zone to V ₁ zone is t ₁ , the transport cycle from V ₃ → V ₂ is t ₂ , the transport cycle from V ₄ → V ₃ is t ₃ , and the transport cycle from V ₅ → V ₄ is t 2 The transport cycle is controlled at _t4 .

In Fig. 2a, the adjusting rods A, B, C, and D are at V ₁ ,
A matrix of weighting coefficients that determines the transport cycle time when moving through each zone of V ₂ , V ₃ , and V ₄ is shown. Each weighting factor is based on the ideal material processing capacity αa ₁ to αa ₄ , ..., αd ₁ to αd ₄ for each lot calculated based on the manufacturing specifications and physical specifications for each finishing lot, and the Equipment capacity βv ₁ (t) ~ which varies for each transport device at the timing of loading and unloading the device
It is a synergistic value with βv ₄ (t). For example, when rod A passes through zones V ₁ , V ₂ , V ₃ , and V ₄ , the transport cycle time weighting coefficients are αa ₁ ×βv ₁ (t), αa ₂ ×βv ₂ (t), αa ₃ × βv ₃ (t), αa ₄ ×βv ₄ (t).

FIG. 3 shows the control file structure and information flow of the transport control device according to the present invention. The tracking table (abbreviated as _F1 ) is used for cleaning lots A, B,
This table manages which transport device C and D are located, and changes over time to follow the movement of the trimming material between the transport devices. In this example, there are six finishing lots A in the _V1 zone (relative positions 1 to 1 in the table).
6) Exist, 6 lot Bs (7 to 12) in V ₂ zone,
There are 6 Lotto Cs (13-18) in the _V3 zone, 6 LottoDs (19-24) in the _V4 zone, and 2 LottoDs (25-26) in the _V5 zone.

The lot management table (abbreviation F ₂ ) manages the processing capacity weighting coefficient α for determining the transport cycle time for each finished lot. In this example, lot A
The evaluation values αa ₁ to αa ₅ of lot B, αb ₁ to αb ₅ of lot B, αc ₁ to αc ₅ of lot C, and αd ₁ to αd ₅ of lot D are managed.

Note that the weighting coefficient α is determined by the calculation means 7 according to each lot.
is set as follows. Assuming that C-lot is twice as large as D-lot (physical specifications) and has twice the finishing accuracy (product specifications), of the above α ₁ to α ₆ , α ₁ to α ₃ of C-lot are D It's twice as much as Lotto's. Therefore, the weighting coefficients are αc=0.2+0.2+0.2+0.2+0.1+0.1=1.0 αd=0.1+0.1+0.1+0.2+0.1+0.1=0.7.

The equipment management table (abbreviation F ₃ ) manages the weighting coefficient β of the capacity for determining the transport cycle time for each transport device (same for each zone). In this example, the evaluation value βv ₁ is a function of time for equipment V ₁ zone.
(t), operator correction value Δβv ₁ , βv ₂ (t) of equipment V ₂ zone, Δβv ₂ , βv ₃ (t) of equipment V ₃ zone
,
Δβv ₃ , βv ₄ (t) of equipment V ₄ zone, Δβv ₄ , equipment V ₅
This file manages zone βv ₅ and Δβv ₅ .

Each of these β is determined by the calculating means 3, and in the example of the C and D lots described above, β ₁ to β ₃ of the C lot are twice as large as those of the D lot. Therefore, as in the tracking table F ₁ , βv ₃ of the V ₃ and V ₄ zones where the C and D lots stay, respectively.
and βv ₄ are as follows.

βv ₃ = 0.2 + 0.2 + 0.2 + 0.2 + 0.2 = 1.0 βv ₄ = 0.1 + 0.1 + 0.1 + 0.2 + 0.2 = 0.7 where Δβv = 0 The transport cycle time table (abbreviated as F ₄ ) is:
The finishing lots A, B, C, and D tracked by the tracking table F ₁ are in zones V ₁ , V ₂ , V ₃ ,
Transport cycle time t ₁ when located at V ₄ and V ₅
~Manage _t4 . In this example, the transport cycle time of lot A located in the _V1 zone is _t1 , the transport cycle time of lot B located in the _V2 zone is _t2 , and the transport cycle time of lot C located in the _V3 zone is
The transport cycle time of lot D located in the _t3 and _V4 zones is controlled by _t4 .

In the conveying devices 51 to 55 shown in FIG.
It is assumed that the final polished material of lot C is arranged from the conveying device 52 to the conveying device 53 below the polishing equipment 41. Sensors 22 and 23 detect this material movement. Material movement detection means 1
creates a material movement timing signal, and the tracking table shift means 2 table-shifts material No. 18 of the tracking table F1 in FIG. 3 using the timing signal. Based on the result of this tracking table shift process, the equipment capacity determining means 3 determines the weighting coefficient βv ₃ of the capacity of zones V ₃ and V ₄ .
(t) and βv ₄ (t) are calculated and registered in the equipment management table F3. In addition, if the steel pipe capacity of the refining equipment changes due to external factors (for example, mechanical failure or changes in the operator's production capacity), the man-machine interface device 72 sets the corrected value. Then, the accommodation capacity weighting coefficient correction means 8 calculates the weighting coefficients Δβv ₁ to Δβv ₅ and stores them in the equipment management table.
Register to F3.

From this point on, after the delivery of C lot to the refining equipment is confirmed, the processing capacity weighting coefficient calculation means 7 receives the refined product specification information and physical information of C lot from the host computer 9, and based on the Then, weighting coefficients αc ₁ to _{αc 5} corresponding to the processing capacity of each zone are determined and registered in the lot management table F2.

As described above, the values βv ₃ (t), βv ₄ (t), Δβv ₃ for evaluating the capacity of the conveying device related to material movement are
,
Based on Δβv ₄ and the values αc ₃ to αd ₄ (αd ₄ is the weighting coefficient in the V ₄ zone of the D lot) evaluated based on the processing capacity of the finishing equipment based on the specifications of the product lot, the conveyance cycle time calculation means 4 calculates the value of the processing capacity of the finishing equipment based on the specifications of the product lot. ₃ , V ₄ (Fig. 2b
Then, the transport cycle times t ₃ and t ₄ of the transport devices 53 and 52 (corresponding to transport devices 53 and 52) are calculated using the following formula.

t ₃ = αc ₃ × (βv ₃ (t) + Δβv ₃ ) × t ₃ ′ t ₄ = αd ₄ × (βv ₄ (t) + Δβv ₄ ) × t ₄ ′ However, t ₃ ′ and t ₄ ′ are zone V ₃ , the reference value for the conveyance cycle time in zone _V4 , which is predetermined based on the standard processing time of the refining equipment existing in zones _V3 and _V4.In the above example, C lot is in zone _V3 . The cycle time t ₃ when the D slot is in _the V ₄ zone is t ₃ = αc × βv ₃ × t ₃ ′ = 1.0 × 1.0 × t ₃ ′ = 1.0t ₃ ′ t ₄ = αd × βv ₄ ×t ₄ ′=0.7×0.7×t ₄ ′ =0.49t ₄ ′. Now, when the D lot enters the V ₃ zone in Figure 2b, αd remains unchanged at 0.7, but βv ₃ becomes 0.7, so t ₃ becomes t ₃ =0.7×0.7t ₃ '. This is 0.49 times the _t3 for C-lot (conveying speed is 2.04 times), and D-lot has half the dimensions and finishing accuracy of C-lot, so the apparent equipment throughput is doubled. .

This calculation result is the transport cycle time table
Registered to F4.

In this way, the conveyance speed is controlled according to the ratio between the previous value and the current value of the conveyance cycle time.

When the transport cycle times t ₃ and t ₄ are determined, the balance of the transport cycle times in the entire finishing equipment is determined and the optimum value is determined. The conveyance cycle time optimization means 5 determines that the conveyance cycle time _t3 is the conveyance cycle time of downstream zones _V2 and _V1 of zone _V3 .
It is determined whether t ₂ , t ₁ and the following conditions are satisfied.

t ₁ ≦t ₂ ≦t ₃ However, t ₂ = αb ₂ × (βv ₂ (t) + Δβv ₂ ) × t ₂ ′ t ₁ = αb ₁ × (βv ₁ (t) + Δβv ₁ ) × t ₁ ′ When the conveyance cycle time of the downstream zone is small or equal, the conveyance of the finishing line has a strong tendency to pull toward the downstream side, and the staying material of each conveying device does not tend to cause congestion. Therefore, the values of the transport cycle times t ₁ , t ₂ , and t ₃ between each zone, that is, each transport device, that satisfy this condition are determined to be optimal values.
In addition, if the balance formula is t ₂ < t ₃ , the number of materials staying in zone V ₃ will eventually increase, leading to transportation congestion in equipment upstream of V ₃ ,
Conversely, the idle rate of equipment increases on the downstream side. Therefore, either increase the transport cycle time t ₃ so that the balance equation for the transport cycle time becomes t ₂ ≦ t ₃ , or
Or make _t2 smaller.

The case of reducing t ₂ is t ₂ × αc ₃ × (βv ₃ (t) + Δβv ₃ ) × t ₃ ′/αb ₂ × (β
By setting v ₂ (t) + Δβv ₂ ) × t ₂ ′ → t ₂ , the balance between zones V ₃ and V ₂ is maintained, but _the recalculated t ₂ is It is necessary to judge whether the storage capacity of the device 54 has been exceeded and whether the balance equation on the downstream side is maintained (for example, t ₁ ≦t ₂ ).

On the other hand, the case where t ₃ is increased is t ₃ × αb ₂ × (βv ₂ (t) + Δβv ₂ ) × t ₂ ′/αc ₃ × (β
By setting v ₃ (t) + Δβv ₃ ) × t ₃ ′ → t ₃ , the same balance t ₂ ≦t ₃ as above is maintained, but in this case, the zone V ₃
It must be a _t3 value that satisfies the constraints on the more upstream side.

In addition, if the optimal solution cannot be found after reviewing the transport cycle time of all the finishing equipment using the method in the above two cases, the overall transport cycle time value of each zone stored in the transport cycle time table F4 can be adjusted. The constants that tend to be lower are added to the F4 table all at once, and the transport cycle times t ₁ to t ₄ are calculated again to find the optimal solution. In addition, a limit value (upper limit value of the transport speed) is set in advance for the transport cycle time so that it does not exceed the capacity of the equipment.
If the cycle time determined as described above exceeds the cycle time, the entire cycle time is multiplied by a certain percentage to correct it.

The optimal solutions for the transport cycle times t ₁ to t ₄ for each zone determined from the above are replaced by speed commands by the unloading speed command means 6, and the transport sequencer 2
8 to 35 to control the material movement speed of each conveyance device 51 to 55.

FIG. 4 shows an embodiment in which a plurality of refining facilities are arranged on a plurality of routes for conveying steel pipes. A steel pipe is carried into the conveying device Z1 corresponding to the most input process of the steel pipe from the pre-finishing process at a conveyance cycle time _t0 ,
A line that passes through conveyance devices Z1 to Z4 in which refining equipment 41 is arranged at a conveyance cycle time of _t11 to _t14 ;
Conveying devices Z12 to Z14 in which the refining equipment 42 is arranged
is branched into a line that passes through the transport cycle time _t21 to _t24 . The steel pipes refined and rolled by the refining equipment 41 and 42 are joined together at the conveyor Z5, and transferred to the transporter Z6 having the next refining equipment 43 according to the transport cycle time.
It passes through at time t ₃ and is carried out from the conveyance device Z7 in the most exiting process at conveyance cycle time _t5 .

In the above finishing rolling process, the stable conditions for transporting the steel pipe in the finishing equipment are determined from the same balance equation as for up rolling: t ₀ ≦ t ₁₁ ≦ t ₁₂ ≦ t ₁₃ ≦ t ₁₄ ≦ t ₃ ≦ t ₄ ≦ t ₅ t ₀ ≦t ₂₂ ≦t ₂₃ ≦t ₂₄ ≦t ₃ ≦t ₄ ≦t ₅ , and at branching and merging points of steel pipe transport, t ₀ ≦t ₁₁ + t ₂₁ (branch) t ₁₄ + t ₂₄ ≦ t ₃ ( A transport cycle time t ₀ , ..., t ₅ that satisfies the following conditions (merging) must be maintained in each transport device.

Therefore, when the cycle time of the pre-movement conveyance device and the post-movement conveyance device is calculated at the timing when the steel pipe moves through the conveyance device of the refining equipment, it is determined whether the above-mentioned conveyance stability conditions are satisfied. If it is not satisfied, repeat the calculation according to the procedure for recalculating the transport cycle time described above until a stable condition is established, and when the optimum transport cycle time for all transport devices is determined, issue a transport speed command, and then issue a transport speed command to the transport sequencer. Speed control of each conveyance device is performed by

Furthermore, once the optimum transport cycle times t ₀ ,..., t ₅ are determined, the steel pipe can be carried into the transport device Z1 in the most entry process at the transport cycle time t ₀ ;
The nearest lot import cycle time indicating means 9 in Fig. 1 continues at t ₀ if the next steel pipe to be delivered is from a lot with the same product specifications, and if it is from a different lot, it depends on the product specifications and dimensional specifications of that lot. Recalculate the carry-in cycle time t ₀ ′ and display the input side operator display panel 73.
Provide guidance.

Similarly, the farthest lot unloading cycle time indicating means ₁₁ in FIG. This makes it possible to predict the arrival time of the steel pipe to the post-finishing process, improving work setup efficiency. moreover,
Each conveyance table cycle time indicating device 10 in FIG. 1 predicts the arrival time of steel pipes to each conveyance device by providing guidance on the conveyance cycle times t ₁ to _{t 4} of each conveyance device on each conveyance device operator display panel 74. This makes it possible to determine the scheduled work setup time for the next material for each refining equipment, and serves as a criterion for determining whether the evaluation value βv of the current refining equipment capacity is an appropriate value. If it is necessary to modify the capacity of the finishing equipment, please use the operator setting panel 72 in Figure 1.
By inputting the corrected value, the optimum transport cycle time is recalculated by the transport cycle time optimization means 5.

〔Effect of the invention〕

In conventional finishing (rolling) factories, such as the pipe manufacturing process, there are many finishing equipments and pipes staying in the factory, and the process to reach the final product takes various routes, making automation slow. There is a lot of manual intervention during cleaning operations. For this reason, since pipes are transported without knowing the operating status of all the refining equipment, mill pacing of the entire refining operation cannot necessarily maintain high efficiency and productivity.

The present invention calculates the cycle time actual value of material transport in refining equipment every time the material moves between transport devices, and determines whether the calculated value satisfies the material transport balance conditions to determine the optimum transport cycle. The time is determined, and the material transfer speed of each conveyance device is automatically controlled based on this time.

For this reason, material transportation throughout the factory is balanced, and there is an effect that local material congestion and idle equipment can be eliminated and productivity of the factory can be significantly improved. moreover,
The arrival time of materials at each piece of equipment is predicted and guided based on the transport cycle time in each process, so operators of each piece of equipment can check whether the setup for finishing work in their own process is in the optimal situation or not. As a result of being able to make decisions from a visual perspective and proactively making corrections, it has the effect of further improving the productivity of the entire factory.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram of the entire finishing rolling line and its control mechanism in which the present invention is implemented, and Fig. 2 a and b are diagrams for explaining an embodiment of the present invention, where the arrangement of materials and conveying equipment is shown. and conveyance cycle time table for each lot and equipment. Figure 3 explains the movement of the computer storage table that follows the flow of materials and the table management method, and Figure 4 explains an example of application to multiple conveyance lines. It is something to do. 1... Material movement detection means, 2... Tracking table shift means, 3... Equipment capacity calculation means, 4... Transport cycle time calculation means, 5...
Conveyance cycle time optimization means, 6... Conveyance speed command means, 7... Material processing capacity calculation means, 8...
Equipment accommodation capacity modification means, 9... Input side lot carry-in cycle time indicating means, 10... Transfer cycle time indicating means for each transfer device, 11... Outgoing lot transfer cycle time indicating means, 20-27...
...sensor, 28-35...conveyance sequencer,
41...Refining equipment, 42...Process calculator, 5
1-55... Conveyance device, 61-64... Rolled material (expressed in lot units), 71... Upper computer, 72
. . . Operator setting panel, 73 . . . Input side operator display panel, 74 . . . Each conveyor device operator display panel, 75 . . .

Claims (1)

[Claims] 1. In a method for controlling the conveyance of processed materials in a refining process in which one or more refining equipment consisting of refining equipment and a plurality of conveyance devices are arranged, input processing material refining information for each product (lot) is Therefore, a processing capacity weighting factor corresponding to the evaluation value of processing capacity when the processing material is processed in the refining equipment is calculated for each transport device of the refining equipment, and the processing material is moved between the transport devices. A capacity weighting coefficient corresponding to the evaluation value of the processing material capacity of each transport device, which changes in The transport cycle time of the processing material between the transport devices after the processing material is moved is calculated using the synergistic value of the processing capacity weighting coefficient and the storage capacity weighting coefficient, and the processing of the transporting device is calculated based on the calculated transport cycle time. A conveyance control method characterized by determining a material conveyance speed.