JPS6334057A - Control system for continuous work in a plurality of working equipment - Google Patents

Abstract

PURPOSE:To permit the efficient work by calculating the necessary working time for a work carried into a plurality of working machines according to the detection values of the determining elements and comparing said time with the rest working time before the next member arrives a selecting device and carrying the work into the working machine corresponding to the min. rest working time. CONSTITUTION:Each signal for the position and size of a flaw detected by a flaw detecting device 5 is input into a calculating device 7B, and the necessary working time is calculated and memorized into a data memory 7D, and it is judged through an input/output port 7C if each of flaw removing machines 4A-4C is in operation or not, and if a machine is in no-operation, a work is transported into the flaw removing machines 4A-4C on the basis of the memorized set order. If all the machines are in operation, the data of rest working time is compared, and one flaw removing machine corresponding to the min. rest working time is taken out, and an assortment operation signal is input into a steel member assorting device 2 so that the next work is carried in. Similarly, since the transported steel members are always supplied into the flaw removing machine corresponding to the min. rest working time, the flaw removing work can be executed with the max. efficiency as a whole.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention detects flaws caused by slag mixing during casting on the inside and outside of a steel material (billet) obtained by continuous casting, for example, and This is a control system for equipment that automatically removes defects by conveying a group of steel materials with defects one after another to multiple automatic eaves removal devices installed in parallel. The present invention relates to a continuous work control system in a multi-work facility in which people and work machines of the same type are arranged on a plurality of branch conveyor lines that are branch-connected via line switching devices.

(Prior art) In the multi-work equipment as described in 1-1, production is generally achieved by using a number of similar work machines that exhibit a processing capacity commensurate with the work production capacity or approximately commensurate with the workpiece production capacity and operating these at the same time. It is configured so that efficient continuous work can be carried out in a state where the capacity and work processing capacity are balanced or almost balanced. For example, if we take the steel materials mentioned above as an example, the size of flaws in each steel material and the The position is not constant and varies widely, and therefore the time required for the flaw removal work on each of the plurality of work machines, that is, the time required to work on the workpiece, varies greatly. Furthermore, the time required for such workpieces varies depending on the shape and size of each workpiece, as well as errors and differences in size.

Therefore, in conventional general equipment of this type, the above-mentioned variation in the required time for workpiece work on each work machine (
, a control means for switching the line switching device based on a specified set order to distribute and supply workpieces that are successively conveyed to a plurality of work machines in the set order; had been adopted.

(Problem to be Solved by the Invention) However, when using such conventional control means, regardless of the size of the remaining work time of each work machine,
The next workpieces are supplied to the work machines one after another in a set order, so even if one work machine has finished its work and is empty, another work machine that is still working will be supplied with the next work machine. The problem is that many workpieces are supplied and then put on standby, resulting in very inefficient work as a whole even though multiple working machines are used.

In view of the above circumstances, it is an object of the present invention to provide a continuous work control system for multiple work equipment that allows work to be performed with maximum efficiency through control adapted to variations in the required work time for each work.

(Means for Solving the Problems) In order to achieve the object described above, the continuous work control system according to the present invention has a plurality of branches connected to a 1-item workpiece conveyance line via line switching devices. People and work machines of the same type are placed on the conveyance line, and a device is installed on the conveyance line to determine the required work time for each workpiece.Based on the detection signal from this device, each workpiece is Means for calculating the required time for work, determining whether each of the plurality of work machines is in actual operation or not, and if there is one in the non-operating state, the work is transferred to the work machine in the non-operating state in a set order. Also, if all the work machines are in actual operation, the remaining work time of these work machines is compared and the next material work is carried into the one work machine corresponding to the minimum remaining work time. A means for switching the line switching device, and a state in which the total value of the remaining working time of the working machine into which the next material work is carried and the required calculation work time for the next material work is the remaining working time of the working machine. The feature r1'' is that a control device is provided with a means for measuring and storing the remaining working time of the working machine.

(Function) According to the control system according to the present invention having such a characteristic configuration, the switching operation of the line switching device allows 11. - Calculate the safe working time for workpieces that are transported from the transport line to multiple work machines via each branch transport line, and the remaining work on each work machine that decreases as each work machine is in actual operation. The line switching device is set so that the next material work is transported to the one work machine corresponding to the minimum remaining working time by comparing the times when the next material work has been transported to the front L of the line switching device. Operate the switching,
+li The above-mentioned next material workpiece can always be sent to the working machine side with the minimum remaining working time. At this time, the total value of the remaining working time of the working machine into which the preceding workpiece is being fed and the required working time of the next workpiece is stored as the required working time of the working machine from then on, so that The selection of branch lines is also performed in the same manner as described above.

(Example) An example of the present invention will now be described in detail based on the drawings.

Figure 1 is a schematic diagram of the overall configuration when applied to a flaw removing equipment that automatically and continuously removes flaws that occur during casting of continuously cast steel materials (an example of a workpiece), and (1) ,
This is a middle conveyance line for conveying steel materials (W) with a rectangular cross section placed on a charging table (3) one after another and conveying them along the longitudinal direction. The conveyor is comprised of a V-shaped roller conveyor consisting of a large number of V-rollers (1a) of a forced rotation type.(5) is used to remove surface rust from the steel material (W) in the middle of the single conveyance line (1). and a system PI that assigns a registration number to the steel material (W).
a first surface flaw detection device (5A) arranged sequentially along the conveyance direction on the conveyance side of the blasting device (I4);
The flaw detection device consists of a second surface flaw detection device (5B) and an ultrasonic flaw detection device (5C) for internal flaw detection, and the first surface flaw detection device (5A) has a V roller conveyor as shown in FIG. The second surface flaw detection device (5B) performs flaw detection on one side of the steel material (W) placed on the conveyor line (1) in the first direction, and the second surface flaw detection device (5B) is connected to the inverter (10).
The remaining two sides of the steel material (II1) after being rotated 180 degrees up and down are tested for flaws, and the ultrasonic flaw detection device (5C) is used to perform flaw detection on the steel material (ml) Yamada to determine whether or not there are any flaws as a whole. If there is a flaw, the position, size, length, and depth are the determining factors for the time required for removing the flaw), and the detection results are automatically registered for each steel material (stomach). The device (7) is configured to be manually operated. (I1) and (12) are 1-transport line (1) as described above.
) Flaw detection and adulterous product extraction tables are placed on both sides of the transport end.
and steel materials (W) without flaws and requiring flaw removal 1-
The conveyance force direction in the conveyance line (1) is a first transfer device that conveys in parallel in the lateral direction. (2) is an example of a line switching device, which is installed adjacent to the first transfer device (second), and is a device for distributing steel materials, which transfers the steel material from the first transfer device (12). The incoming steel material (stomach) is received one by one, and transferred to N number of branch conveyor lines (3A, 3B, 3C). =I<) and the switching operation is performed so as to selectively feed and supply the non-working branch conveyance line (3X) exclusively for conveying only the non-flaw-free steel materials.

(4A, 4B, 4C) are the branch conveyor lines (3A, 4C).
, 3B, and 3C) are the same type of automatic paper-taking machines (an example of a factory-made machine). Reference numeral (8) denotes a second transfer device connected to the transport end portion of each of the branch transport lines (3A, 3B, 3C) and the non-working branch transport line (3X); 3A, 3B, 3
C:) and (3x) receive the steel material (W) after flaw removal, and after conveying it in parallel in the direction of right angle lateral force, it is conveyed to the next stage 11 visual inspection section (13). .

In the continuous automatic paper removal equipment having the above configuration, the control device (7) executes the following control operations as a control means for continuous eaves removal work for steel materials (W) that are sent in one after another. It is something.

FIG. 3 shows an outline of control in the control device (7), in which signals indicating the position and size of flaws detected by the flaw detection device (5) are transmitted to the arithmetic processing device (7B) through the interface (7A). (hereinafter referred to as the CPU), calculates the required time for removing defects on each workpiece using a predetermined calculation formula, and stores it in the data memory (
7D), and the N number of scratch removal machines (4A, 4
B, 4C) The input/output board (7C) determines whether or not the defect removal work is in progress, and if any work is not in operation, the work is stored in the program memory (7E). If all the defect removal machines (4A, 4B, 4C) are in actual operation, the The remaining working time data (At, Bt, C:t) in the scratch removing machine (4A, 4B, 4C) is inputted from the data memory (7D) to the CPU (7B) and the data (At, Bt, Ct ), one defect removal machine (41, 4B, or 4C) corresponding to the minimum remaining working time is selected, and the next material work is transferred to the selected one defect removal machine (4A, 4B, or 4C). The steel material distribution, which is a line switching device, instructs and transmits an operation signal ° (line switching signal) to the device (2) via the input/output capo (7F) so as to carry in the steel material. On the other hand, the data memory (7D) in +1ii stores the remaining working time of the flaw removing machine (4A, 4B, or 4C) into which the next material work is carried in and the required work time calculated for the next material work. All the scratch removal machines (4A, 4B, 4C) with the total value as the remaining working time on the paper removal machine (4A, 4B, or 4C)
The remaining work time is always stored in di/1lll format, and each time a work is sent one after another, the remaining work time data (At, Bt, at) stored in the data memory (7D) is is read out to the CPU (7B), and the data is compared as described above and the paper taking machine for carrying in the next workpiece (4
A, 4B, or 4C) data complement IF 11'-
It is uno. However, if the steel material is free of defects, +FJ recording will be performed by the device (2) on the non-working branch conveyance line (3X) (
It is directly sent to the second transfer device (8) without being subjected to any flaw removal work.

Continuous paper-taking work under such a control mode ensures that the steel materials (W) that are brought in one after another are always kept within the minimum remaining work time (
Of course, if it is empty, the remaining time is zero). ), and the defect removal work can be carried out with maximum efficiency as a whole. FIG. It functions as a buffer.

In addition, in the embodiment 1-, a plurality of work machines (4A, 4B, 4
C) is applied to a flaw removing machine for continuous tin-made steel materials, but it may also be applied to a control mode for continuous flaw detection work by arranging multiple flaw detection devices (5) in parallel. It is suitable for use in any control system for multiple work equipment where work times vary.

(Effects of the Invention) As is clear from the detailed description above, when the present invention is used, when a plurality of similar work machines are operated simultaneously to perform the desired work continuously, the Even if there are variations in the required work time and the work completion timings for each work of the plurality of work machines are uneven, the next work to be sent is selectively supplied to the work machine that can work or finish the work the fastest. As a result, there is no time loss due to unforeseen idleness of work equipment, and all work equipment can be used to its full potential to perform work with maximum overall efficiency. be.

[Brief explanation of the drawing]

Figures 1 to 4 show one embodiment of the present invention, Figure 1 is a schematic diagram of the entire applicable equipment, Figure 2 is an enlarged view of the main parts showing the workpiece conveyance posture, and Figure 3 is Control II Anzu, No. 4
The figure is a flowchart. (1)...Single work transfer line, (2)...Line switching device, (3A, 3B, 3C)...Branch transfer line, (3x)...Non-work branch transfer line, (4A ,
4B, 4C)...Work machine, (7)...Control device, (
8)...Transfer device.

Claims (4)

[Claims] (1) Multiple branch transfer lines (
3A, 3B, 3C...) are equipped with the same type of work equipment (4A, 3C...), respectively.
4B, 4C...), and the single conveyance line (1)
A device (
5), and a means for calculating the required working time for each work based on the detection signal from this device (5), and whether each of the plurality of working machines (4A, 4B, 4C, etc.) is in actual operation. If there are workpieces that are not in operation, the workpieces should be carried into the inoperable machines in the set order, and all the work machines (4A, 4B, 4C, etc.)
) are in actual operation, those working machines (4A, 4B, 4C)
), the remaining work time is compared and one work machine (4A, 4B, or 4C...) corresponding to the minimum remaining work time is determined.
), the line switching device (2) is operated to switch the line switching device (2) so as to carry in the next workpiece to All working machines (4A, 4B, 4C...) are set in such a state that the total value of the required calculation work time for the material work is the remaining working time of the working machine (4A, 4B, or 4C...).
A continuous work control system in a multi-work facility, characterized in that a control device (7) is provided with means for measuring and storing the remaining work time of C..). (2) Each branch conveyance line (3A, 3B, 3C...)
2. The continuous work control system in a multi-work facility according to claim 1, wherein the continuous work control system has a buffer function. (3) Each branch conveyance line (3A, 3B, 3C...)
transfer device (8) at the end of their conveyance.
A continuous work control system in a multi-work facility according to claim 1, which is collectively connected to a plurality of work facilities. (4) The line switching device (2) is connected to the plurality of work machines (
Branch conveyance line (3A, 4B, 4C...) equipped with
, 3B, 3C, . . . ) and a non-working branch conveyance line (3X) arranged in parallel.