JP5968832B2 - Operation support system for work-in-process storage equipment - Google Patents

Description

  The present invention relates to an operation support system that supports work in a work-in-process storage facility that temporarily stores rolled material (work-in-process material) after rolling.

  Rolled materials rolled in a rolling facility after combining multiple orders are sent to the cutting facility to divide into multiple products included in the rolling equipment, and then the maintenance process is a lower process according to the product specifications (Heat treatment process, inspection process, etc.). Further, the rolled material discharged from the rolling equipment is temporarily stored in a storage place before being cut by the cutting equipment. Rolled material stored in the storage location is a “work in progress material” waiting for the next processing. Among these work in progress materials, which work in progress material is cut and sent to the lower process mainly depends on delivery date, productivity, etc. It is necessary to decide in consideration.

Specifically, the work-in-process material has a delivery date that should be completed in the lower process (care process), and the work-in-process material is properly selected and cut so that the processing is completed within this delivery date. Transport to process. Further, in order to process the work in progress quickly in the lower process, it is preferable to improve the overall productivity, that is, the throughput by determining the cutting process and the order of sending the work in progress to the lower process.
On the other hand, a plurality of storage locations (mounting locations) are set as the storage locations, and work-in-process materials are piled up at each mounting location.

  If it is necessary to preferentially transport the work-in-process material (priority work-in-process material) located on the lower side among the work-in-process materials in the piled state, other work in progress stacked on the priority work-in-process material by a crane or the like “Replacement work” is performed in which the material (ordinary work-in-process material) is moved to another place. Then, the priority work-in-process material is taken out with a crane and sent to the cutting processing place for the replacement work, and sent to the lower process after cutting. In addition, as another method of taking out the priority work in progress, all work in progress stacked in the place where the priority work in progress is placed is prioritized over the work in progress at other places without performing the replacement work. In some cases, a “priority picking work” is performed in which cutting is sequentially performed and the priority work-in-process material is picked up as soon as possible.

In the replacement work, it is above because it is efficient to move the work-in-process materials to where the work in progress, and the surrounding situation must be taken into consideration, as well as the time of the replacement work itself. Compared with the “priority picking work” in which work-in-progress materials are processed in order, the setup time increases.
On the other hand, in the “priority pick-up work”, the setup time can be shortened compared to the “replacement work”, but when the transport work is concentrated on one placement place (first placement place), New work-in-process materials are stacked at a different mounting location (second mounting location), and the work-in-process materials coming later are stacked on the work-in-process materials that have arrived first at the second mounting location. The That is, while the work-in-process material at the first loading place is being processed, a new work-in-process material is stacked at the second loading place, so that the work-in-process material that has previously arrived at the second loading place is positioned on the lower side. May end up.

  As described above, in order to transport the work in progress from the storage location constituted by a plurality of placement locations to the lower process, it is necessary to consider various situations as described above, and from the rolling equipment to the storage location. It is very difficult to accept the work in progress and to cut and transport the work in progress from the storage location to the lower process, and the actual situation is that these operations are left to the judgment of the operator who operates the transport crane that transports the work in progress. It is.

As techniques for managing complicated processes at production sites, there are techniques shown in Patent Documents 1 to 3.
Patent Document 1 is a technology related to the display of process information (in-process, progress, delivery date), and updates the current status according to the results input by the worker, and at the same time, predicts future progress and displays the information for production. The administrator easily grasps where and how much delay / advance has occurred in the initial production plan.

  In Patent Document 2, when there are variations in the process pattern to be passed due to the characteristics and process capability of the product, the process schedule is calculated after predicting which process will be passed, and a production plan that minimizes it is calculated. To create. Patent Document 3 is a technique for leveling the overall load from steelmaking to refining.

Japanese Patent Laid-Open No. 04-347769 JP 2010-219441 A JP 2012-146124 A

In the actual operation, the delivery date of the work-in-process material may be earlier than the predetermined delivery date due to various circumstances. Even in such a case, the “replacement work” described above or the “priority extraction work” is performed. Alternatively, due to a delay in the rolling process, even if the delivery date is the same, the substantial work time margin may be reduced, leading to the same situation as when the delivery date is accelerated.
However, since the rolled material that has finished rolling arrives at the storage location anew during the replacement work and the priority transport operation as described above, the various conditions of the entire storage location are considered. If work procedures for storage work, transfer work, priority pick-up work, and transport work are not properly determined, the number of work-in-process materials that have no delivery time will increase at the storage location.

  For example, throughput decreases due to an increase in setup time due to relocation work, work is unsuccessful, and as a result, work-in-process materials with insufficient delivery time increase, and urgent materials (work-in-process materials whose delivery time has become shorter than planned) This leads to an increase in the number of jobs and an increase in replacement work, and may lead to a vicious circle in which the throughput further decreases. In addition, when the priority work-in-progress material with short delivery time increases, it is necessary to stop the previous process (rolling equipment, etc.) and “clean up the work-in-process material.” This clean-up operation greatly reduces the overall productivity. was there.

  Patent Document 1 uses such a technique because it does not provide information for determining the priority of work-in-progress rather than quickly grasping the overall pile status and delivery date of work-in-process materials at a storage location. However, the fact is that the above-mentioned problems cannot be solved. In addition, Patent Documents 2 and 3 do not indicate the actual operation status only by making a production plan, and in particular, it is impossible to solve the above-described problems such as when the delivery date is changed.

  In view of the above problems, the present invention has an object to provide an operation support system for a work-in-process storage facility that can quickly determine an efficient work procedure by providing information on work-in-process materials at a storage location. And

In order to achieve the above-described object, the present invention takes the following technical means.
The operation support system of the work in progress material storage facility according to the present invention temporarily stores the work in progress material after rolling in a storage place, and takes out the work in progress material from the storage place and transports it to a lower process after cutting processing. An operation support system for supporting the operation of storage equipment, the operation support system having an indicator that can be confirmed by an operator, and the indicator indicates a loading state of work-in-process materials stored in the storage location. It is configured to display the delivery date for each work-in-process material in an identifiable manner.

Preferably, the display device displays the delivery date of the work-in-process material in different colors.
Preferably, the indicator may display a work-in-process material that performs the same operation in a lower process among work-in-process materials stored in the storage location so as to be identifiable.
Preferably, the display device displays a delivery status of the work-in-process material with the passage of time.

  According to the operation support system for a work in progress storage facility of the present invention, it is possible to quickly determine an efficient work procedure by providing information on work in progress at a storage location.

The conceptual diagram of the operation support system of a work-in-process storage facility is shown. It is the figure which showed an example of the status display screen of a support monitor. It is the figure which showed an example of the search screen displayed on a support monitor. It is the figure which showed an example of the delivery date situation screen displayed on a support monitor.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of an operation support system for work-in-process storage facilities according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram showing the operation support system of the present embodiment.
As shown in FIG. 1, the work-in-process storage facility 1 is arranged on the downstream side of the rolling facility 2 that rolls the rolled material W. For example, the rolling equipment 2 rolls the rolled material W charged in a heating furnace with a roughing mill, a finish rolling mill, or the like. The rolled material (work-in-process material) W after rolling is cooled by passing through a cooling bed (not shown), and the work-in-process material W after cooling is placed in the storage place 5 of the work-in-process storage facility 1. Become.

The work-in-process storage facility 1 stores the work-in-process material W after being cooled in the cooling floor, cuts the work-in-process material W and transports it to the lower process, and stores the work-in-process material W in the storage place 5 and the work-in-process material W. A transport crane 3 for transporting and a gas cutting device 4 for cutting the work-in-process material W into a predetermined length are provided.
The transport crane 3 takes out the work-in-process material W of the cooling floor and transports the work-in-process material W to a predetermined storage place 5 and also transports the work-in-process material W in the storage place 5 toward the gas cutting device 4. The gas cutting device 4 cuts the work-in-process material W according to the dimensions of the product to be delivered. The storage place 5 is provided at a predetermined position between the cooling floor and the gas cutting device 4, and the transport crane 3 moves on the storage place 5. In this storage place 5, a plurality of placement places 5A, 5B,... Are set. In each mounting place 5A, 5B,..., The work-in-process material W can be stacked in order from the lower side to the upper side.

  In such a work-in-process storage facility 1, when the operator operates the transport crane 3, the work-in-process W cooled through the cooling floor is lifted by the transport crane 3, and the work-in-process W W is stored in the storage place 5. It moves, and the storage operation | work which takes down the work-in-process material W to each mounting place 5A, 5B, ... in the storage place 5 is performed. In the storage operation, the placement location 5A, 5B,... On which the work-in-process material W is placed is determined by the operator unless otherwise specified. On the other hand, the work-in-process material W stored in the storage place 5 is taken out from the storage place 5 based on the delivery date of the work-in-process material W, sent to the gas cutting device 4 and cut, and then in a lower process according to each product specification. It is sent to a certain care process (polishing, surface care, heat treatment, UT inspection, etc.).

In the present invention, the storage status of the work-in-process material W from the rolling facility 2 to the storage location 5 and the transfer work of transferring the work-in-process material to the lower process are smoothly advanced by displaying the piled-up status and the delivery date of the work-in-process material W. It is a thing.
Hereinafter, details of the operation support system for the work-in-process storage facility according to this embodiment will be described. Further, in order to make the description easy to understand, the description will be made assuming that there are four work material placement places in the storage place 5. 1 and 2, in order from the left side, a first mounting location 5A, a second mounting location 5B, a third mounting location 5C, and a fourth mounting location 5D.

The operation support system 1 for the work-in-process storage facility 1 displays a stacking state of the work-in-process materials W stored in the mounting places 5A, 5B, 5C, and 5D, and an indicator (support monitor) that displays the delivery date of each work-in-process material W. ) 10.
As shown in FIG. 2, the support monitor 10 includes a liquid crystal monitor and a CRT monitor. The support monitor 10 is installed in an operation room for operating the transport crane 3, and the operator M can always view the support monitor 11. Further, the support monitor 10 is installed not only in the operation room of the transport crane 3 but also in a control room that collectively manages various processes, and can be viewed by a manager or the like who manages the processes.

Specifically, the support monitor 10 displays a status display screen Q1 that displays a stacking status of work-in-process materials stored in the storage location 5. On the lower side of the status display screen Q1, there is shown a storage location display unit 11 for displaying each storage location with letters, numbers, symbols, and the like.
In the storage location display section 11 of the status display screen Q1, “5A” indicating “first mounting location 5A”, “5B” indicating “second mounting location 5B”, “third mounting location” in order from the left side. “5C” indicating “location 5C” and “5D” indicating “fourth placement location 5D” are shown.

  On the status display screen Q1, on the upper side of the storage location display unit 11, there is shown an in-process material status display unit 12 that displays the work-in-process material W stored in each placement location by a figure (bar graph) or the like. The work-in-progress status display unit 12 includes a first area 12a that displays the work-in-process material W at the first placement location 5A, a second area 12b that displays the work-in-process material W at the second placement location 5B, and a third placement. It is divided into a third area 12b for displaying the work-in-process material W at the place 5C and a fourth area 12d for displaying the work-in-process material W at the fourth placement place 5D.

  Specifically, in the first area 12a, graphics imitating the seven work-in-process materials W stacked in the first mounting place 5A are displayed in the stacked order, and in the second area 12b, the second mounting is performed. Figures indicating the 10 work-in-process materials W stacked in the place 5B are displayed in the order in which they are stacked, and in the third area 12c, the figure indicating the three work-in-process materials W stacked in the third placement place 5C. Are displayed in the order in which they are stacked, and in the fourth area 12d, graphics indicating the two work materials W stacked in the fourth placement place 5D are displayed in the order in which they are stacked. That is, the status display screen Q1 displays the distribution of the piled-up state of the work-in-process materials W stored in the respective placement places 5A to 5D.

  Now, the support monitor 10 displays the delivery date of each work-in-process material W on the status display screen Q1. Specifically, in the work-in-progress material status display unit 12, each figure indicating the work-in-process material W is colored with a predetermined color according to the margin for delivery (allowance for completing the work). The delivery date of the work-in-process material W exists in a computer that manages the lower processes (heat treatment process, inspection process, etc.), and the delivery date information is instantly transferred to the computer that controls the support monitor 10.

  The figure 13a indicating the work-in-process material W with the shortest delivery date (the figure 13a indicating the work-in-progress material W requiring urgentness) is, for example, “red”. The figure 13c indicating the work-in-process material W that is “pink” and has no change in delivery date (the figure 13c showing the work-in-process material W as scheduled) is, for example, “gray”. Further, the figure 13d indicating the work-in-process material W (dead material) that cannot be delivered due to out of specification or the like is, for example, “black”. Regarding the coloring of graphics, it is desirable to use “warm color” for those with high urgency and “cold color” for those with low urgency, but coloring is not limited to those described above.

  In this way, the work-in-process materials stacked in the storage location 5 are displayed in different colors according to the process delivery date (the margin until the date when the work should be completed), so that the distribution of the work-in-progress material according to the delivery date margin can be easily grasped. can do. That is, by looking at the status display screen Q1 displayed on the support monitor 10, the distribution of the work in progress according to the margin of delivery delay can be seen at a glance (what kind of work place is packed in which place of installation). It is easy to visually check), and it is possible to simplify the determination as to which work-in-process material (mountains) existing at which mounting place should be processed with priority.

The support monitor 10 displays the work-in-process material W that performs the same work in the lower process among the work-in-process materials W stored in the storage location 5. Specifically, as shown in FIG. 3, the support monitor 10 displays a search screen Q2 for searching for a work-in-process material W that matches various conditions among a plurality of work-in-process materials W stored in the storage location 5. Yes.
The search screen Q2 displays an input window for inputting the thickness range of the work-in-process material W, the width of the work-in-process material W, the length of the work-in-process material W, and the work content (process code) in the lower process. When an arbitrary condition is input in the input window and “narrow down” is clicked, the work-in-process material that matches this condition is displayed on the work-in-process material status display unit 12 (status display screen Q1). In the search screen Q2, the work-in-process code indicates the content of work performed in the lower process.

  When searching for a work-in-process material having the same condition, for example, the same work content, on the search screen Q2, the work-in-progress status display unit 12 displays a work among the displayed work-in-progress materials W as shown in FIG. Work in process materials with the same contents are displayed separately from other work in progress materials. For example, the work-in-process material W having the same work content is indicated by a thick frame 14. Thereby, it is possible to easily grasp where the work-in-process material W having the same work content is located. In other words, it is possible to specify conditions such as work contents and dimensions capable of simultaneous processing (assortment), and to highlight the work-in-process material that matches the conditions on the status display screen Q1. It can be easily confirmed visually.

Furthermore, the support monitor 10 displays the delivery date of the work-in-process material W.
Specifically, as shown in FIG. 4, the support monitor 10 displays a delivery date situation screen Q3 that displays a delivery delay situation (delayed sheet ratio). The delivery date status screen Q3 includes, for example, a time axis (horizontal axis) that divides a day's work every 8 hours, and a ratio of the number of delays to all work-in-process materials W stored in the storage location 5 (number of late delivery dates / all work in progress). A trend graph having a vertical axis indicating the number of materials) is displayed. The ratio of delivery delay is displayed for each work (every 8 hours).

  As a result, it is possible to grasp the status of delivery delay, which is one of the delivery statuses, and to determine whether the work by the operator is appropriate. For example, it is possible to know how the work in progress with less delivery time has changed, how much has been processed, and how much has flowed in every day or every operator change time. The number of work-in-process materials can be suppressed to a predetermined amount or less. It is possible to prevent the balance between the inflow of a new work-in-process material to the storage location and the transport amount (process amount) of the work-in-process material to the lower process.

  Also, for example, if materials with delayed delivery are spread over multiple piles, and the ratio of delayed sheets is not reduced or has increased, it is necessary to process materials that are delayed in delivery even if they are replaced. It can be determined that there is. Even in such a case, it is possible to easily check the piled-up state of work-in-process materials, so it is possible to easily estimate how much replacement work is necessary, and it is possible to make an appropriate work plan such as securing personnel. .

  As described above, according to the operation support system 1 of the work-in-process storage facility of the present invention, the operator can check the pile state of the work-in-process W at the storage location 5 displayed on the status display screen Q1 of the support monitor 10, and the work-in-process material. The transport crane 3 can be operated while looking at the delivery date of W, that is, while looking at the delivery date of all work-in-process materials W stored in the storage place 5 and the distribution of work-in-process materials W. Therefore, it is possible to quickly guide how it is optimal to move the carrying crane 3 and carry the work in progress of the work in progress W. In particular, the work-in-process material W can be sent to the lower process by the most suitable method even when the delivery date is suddenly changed according to the user's request or physical distribution.

  When the delivery date of work-in-process materials becomes short, the signs of insufficient processing capacity can be grasped by looking at the support monitor 10 due to urgent materials, setup time, increase, etc. In this case, in the previous process (rolling It is possible to adjust the overall production plan including the process. It is possible to grasp the trend of the delivery date situation on the delivery date situation screen Q3, and to evaluate the state of the processing capability.

In the operation support system for the work-in-process storage facility of the present invention, the information shown to the operator is not limited to the information described above, and various information may be displayed.
For example, in the operation support system 1 for the work-in-process storage facility, the delivery date may be digitized for each of the placement locations 5A to 5D, and the digitized index may be displayed on the support monitor 10 as guidance.

  For example, the margin index W1 shown in Expression (1) may be calculated for each of the placement locations 5A to 5D, and the calculated margin index W1 may be displayed. As shown in Expression (2), the number index may be displayed. W2 may be calculated for each storage location, and the calculated number index W2 may be displayed.

  In the margin index W1, the index value increases for each placement location as the number of margin days decreases (in the case of a delay, the index value is a negative number and is greater than α). However, those with a margin of α days or more are not counted. For example, if there is a large delivery delay, W1 will be a large value. On the other hand, the number index W2 does not consider the margin for delivery, but considers only the number of work in progress. Usually, when there is a margin in processing capacity, it is sufficient to sequentially process a large peak of the number index W2, but when there is a storage place where the margin index W1 is larger than a predetermined value, the work-in-process material with a short delivery date on the lower side It is necessary to preferentially process a certain place.

  As described above, the margin index W1 and the number index W2 are calculated for each placement location, and by looking at the transition, it can be used as a guideline from which placement location to process. As a result, it is possible to prevent a production stoppage due to an excessive increase in work in advance. In addition, if the delay in the delivery date distribution in the work-in-process material is within a predetermined range, priority is given to “mountain priority” (priority transport work), and if the delay in delivery date has increased, priority is given to “board priority” (replacement work). be able to.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. In particular, in the embodiment disclosed this time, matters that are not explicitly disclosed, for example, operating conditions and operating conditions, various parameters, dimensions, weights, volumes, and the like of a component deviate from a range that a person skilled in the art normally performs. Instead, values that can be easily assumed by those skilled in the art are employed.

DESCRIPTION OF SYMBOLS 1 Work-in-process material storage facility 2 Rolling facility 3 Transport crane 4 Gas cutting device 5 Storage location 5A 1st mounting location 5B 2nd mounting location 5C 3rd mounting location 5D 4th mounting location 10 Indicator (support monitor)
DESCRIPTION OF SYMBOLS 11 Storage location display part 12 Work-in-progress status display part 12a 1st area 12b 2nd area 12c 3rd area 12d 4th area 13 Graphic

Claims (4)

An operation support system that temporarily supports the work-in-process material after rolling in a storage location, supports the operation of the work-in-process storage facility that takes out the work-in-process material from the storage location and transports it to a lower process after the cutting process,
The operation support system has a display that can be confirmed by an operator,
The indicator is configured to display a loading state of the work in progress stored in the storage location and to display a delivery date for each work in progress in an identifiable manner. Operation support system.   The operation support system for a work-in-process storage facility according to claim 1, wherein the display unit displays the delivery date of the work-in-process material in different colors.   The said indicator displays the work-in-process material which performs the same operation | work in a lower process among the work-in-process materials stored in the said storage place so that identification is possible, The work-in-process storage equipment of Claim 1 or 2 characterized by the above-mentioned. Operation support system.   The operation support system for a work-in-process storage facility according to any one of claims 1 to 3, wherein the display device displays a delivery date status of the work-in-process material over time.

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