JP2011133335A - Weighing system and control device thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weighing system which efficiently attains a production plan as the system as a whole. <P>SOLUTION: In the weighing system, information on production is used in common in a plurality of combinational balances 30, and the production plan is changed so that a difference becomes small, when there is a difference in each progression state for the production plan between a first combinational balance 30X and a second combinational balance 30Y. Namely, an individual target production amount for a combinational balance 30, whose operation is interrupted, is set smaller than a primary individual target produced amount, and an individual target produced amount of a combinational balance 30, whose operation is continued is set larger than the primary individual target production amount, based on the operation interruption of the first combination balance 30X or the second combination balance 30Y. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a weighing system including a combination weigher and a control device thereof.

  As an example of the above-described weighing system, Patent Document 1 describes an apparatus including a feeder, a combination weigher, and a packaging machine.

JP 2006-234395 A

  By the way, in order to increase the production efficiency of the weighing system, it is conceivable to configure the system including a plurality of combination weighers. In such a weighing system, it is expected that the production plan of the entire system can be achieved more efficiently by controlling the production in consideration of the production status of a plurality of combination weighers. However, so far no technology has been proposed to achieve this.

  An object of the present invention is to provide a weighing system that can efficiently achieve a production plan for the entire system.

In the following, means for achieving the above object and its effects are described.
(1) The gist of the invention described in claim 1 is that information relating to production is shared among a plurality of combination weighers.

  In the present invention, since information related to production is shared by a plurality of combination weighers, it is possible to control each combination weigher in consideration of the production status of each of the plurality of combination weighers. Therefore, the production plan for the entire system can be achieved efficiently.

  (2) The gist of the invention described in claim 2 is that, in the control device of the weighing system according to claim 1, at least one production plan of the plurality of combination weighers is changed based on the shared information. Yes.

  In the present invention, since at least one production plan of a plurality of combination weighers is changed based on shared information, for example, there is a difference in progress with respect to the production plan between one combination weigher and another combination weigher. Sometimes it becomes possible to change the production plan to reduce this difference. Therefore, the production plan for the entire system can be achieved more efficiently.

  (3) The invention according to claim 3 changes the production plan based on the fact that at least one operation of the plurality of combination weighers is interrupted in the control device of the weighing system according to claim 2. This is the gist.

  According to the present invention, the production plan is changed based on the fact that at least one operation of the plurality of combination weighers is interrupted, that is, when the progress of the production plan of the entire system is delayed. It becomes possible to compensate for the delay. Therefore, the production plan for the entire system can be achieved more efficiently.

  (4) The invention according to claim 4 is the control device of the weighing system according to claim 3, wherein the target production amount of the combination weigher whose operation has been interrupted is smaller than the initial target production amount. The gist is to change to

  In the present invention, since the target production amount of the combination weigher (interruptible scale) whose operation is interrupted is reduced, that is, the remaining necessary production amount for achieving the production plan of the entire system is assigned to the interrupting scale. Therefore, it is possible to suitably suppress the achievement of the production plan due to the interruption of the operation of the combination weigher.

  (5) In the invention according to claim 5, in the control device of the weighing system according to claim 4, the operation is continued with the difference between the initial target production amount and the target production amount at the time of interruption as the target reduction amount. The gist is to assign the target weight loss to the combination weigher.

  In this invention, since the target weight loss is allocated to the combination weigher that is continuously operated, that is, the target production amount of the entire system is maintained while the target production amount of the combination weigher whose operation is interrupted is reduced. Therefore, it is possible to suppress that the achievement time of the production plan is excessively delayed and that the production plan of the entire system is excessively deviated from the original one.

  (6) The invention according to claim 6 is the target production of the weighing scale control device according to claim 4 or 5, based on the restart of the operation of the combination weigher whose operation has been interrupted. The gist is to change the amount to the target production amount at restart that is larger than the target production amount at interruption.

  In the present invention, since the target production amount of the combination weigher (resuming balance) that has been resumed operation is increased, that is, the remaining necessary production amount for achieving the production plan of the entire system is assigned to the resumption balance. Therefore, it is possible to suitably prevent the achievement of the production plan from being too late due to the interruption of the operation of the combination weigher.

  (7) The invention according to claim 7 is the control device of the weighing system according to any one of claims 1 to 6, wherein at least one production speed of the plurality of combination weighers is based on the shared information. The gist is to change.

  In the present invention, since at least one production speed of a plurality of combination weighers is changed based on shared information, for example, when there is a delay in the production progress of one combination weigher, the other direction is compensated for this delay. It becomes possible to change the production speed of the combination weigher. Therefore, the production plan for the entire system can be achieved more efficiently.

  (8) In the invention according to claim 8, in the control device for the weighing system according to claim 7, it is predicted that the production of the weighing system including the plurality of combination weighers will not be finished by the initial scheduled production end time. The gist of the invention is to change the production speed at the time of production.

  In this invention, since the production speed is changed when it is predicted that the production of the weighing system will not be completed by the original scheduled production end time, the difference between the actual production end time and the initial scheduled production end time is reduced. can do.

  (9) The invention according to claim 9 includes the plurality of combination weighers in the control device of the weighing system according to claim 7 or 8 when operation of at least one of the plurality of combination weighers is interrupted. The gist is to change the production speed so that the production of the weighing system is completed by the scheduled production end time.

  In this invention, when at least one operation of a plurality of combination weighers is interrupted, the production speed is changed so that the production of the weighing system is completed by the scheduled production end time. The production of the weighing system can be completed by the original scheduled production end time even when the production progress is delayed due to the above.

  (10) The invention described in claim 10 includes a plurality of combination weighers that measure the amount of the object to be weighed, and the control device for the weighing system according to any one of claims 1 to 9. It is said.

  ADVANTAGE OF THE INVENTION According to this invention, the measuring system which can achieve the production plan as the whole system efficiently can be provided.

The schematic diagram which shows the structure of the measurement system which consists of a feeder, a combination scale, and a packaging machine about 1st Embodiment which actualized the measurement system of this invention. The schematic diagram which shows the structure about the combination scale of the embodiment. The block diagram which shows the relationship between peripheral devices including a balance main body and a balance control apparatus about the combination scale of the embodiment. The timing chart which shows an example of the measurement operation | movement about the combination scale of the embodiment. The schematic diagram which shows the outline | summary of a combination calculation about the combination scale of the embodiment. The table | surface which shows an example of the measurement cycle table updated by the balance control apparatus of the embodiment. The timing chart which shows the example about the production aspect of the combination weigher of the embodiment. The timing chart which shows the example about the production aspect of the combination weigher of the embodiment. The timing chart which shows the example about the change aspect of the production plan of the combination scale of the embodiment. The timing chart which shows the example about the change aspect of the production plan of the combination scale of the embodiment. The figure which shows the content of the table produced when the change is performed about the production plan of the combination scale of the embodiment. The figure which shows the content of the table produced when the change is performed about the production plan of the combination scale of the embodiment. The flowchart which shows the process sequence about the "basic operation control process" performed by the balance control apparatus of the embodiment. The flowchart which shows the process sequence about the "1st plan change process" performed by the balance control apparatus of the embodiment. The flowchart which shows the process sequence about the "2nd plan change process" performed by the balance control apparatus of the embodiment. The flowchart which shows the process sequence of the "basic operation control process" performed by the balance control apparatus about 2nd Embodiment which actualized the measurement system of this invention. The flowchart which shows the process sequence about the "1st speed change process" performed by the balance control apparatus of the embodiment. The flowchart which shows the process sequence about "the 2nd speed change process" performed by the balance control apparatus of the embodiment. The timing chart which shows the example about the production aspect of the combination weigher of the embodiment. The timing chart which shows the example about the production aspect of the combination weigher of the embodiment.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the weighing system 1 measures the weight of the weighing object 81 supplied from the apparatus 10 and the weighing machine 81 supplied from the feeding machine 10 2. The combination weighing machine 30 includes two packaging machines 20 that fill and seal the bag-like packaging material 82 with the objects to be weighed 81 discharged from the corresponding combination weighing machine 30. Two combination weighers 30 are provided in parallel to the feeder 10. Hereinafter, one of the two combination weighers 30 is referred to as a “first combination weigher 30X”, and the other is referred to as a “second combination weigher 30Y”. Of the two packaging machines 20, the one corresponding to the first combination weigher 30X is referred to as "first packaging machine 20X", and the one corresponding to the second combination weigher 30Y is referred to as "second packaging machine 20Y". In FIG. 1, one-way arrows indicate the flow of the objects to be weighed 81 between the feeder 10, the combination scale 30, and the packaging machine 20, and the two-way arrows indicate the supply machine 10, the combination scale 30, and the packaging machine 20. Shows the flow of information.

  The feeder 10 includes a feeder main body 11 that transports the object 81 to be measured by a conveyor or a feeder, and a supply controller 12 that controls the operation of the feeder main body 11. The feeder main body 11 is provided with a first transport line 11X that transports the object 81 to the first combination balance 30X and a second transport line 11Y that transports the object 81 to the second combination scale 30Y. Yes.

  The packaging machine 20 includes a packaging machine main body 21 that wraps the weighing object 81 with the packaging material 82 and conveys the packaging product 83 that is the weighing object 81 after packaging to the next process, and various types of the packaging machine main body 21. A packaging control device 22 that controls the operation of the device and a packaging operation device 23 as an interface for the operator are included. Hereinafter, with respect to the packaging machine body 21, the packaging control device 22, and the packaging operation device 23, those of the first packaging machine 20X are referred to as “first packaging machine body 21X”, “first packaging control device 22X”, and “first packaging”, respectively. The operation device 23X ”is referred to as the“ second packaging machine body 21Y ”, the“ second packaging control device 22Y ”, and the“ second packaging operation device 23Y ”, respectively.

  The combination weigher 30 includes a main body 40 composed of various devices for weighing and discharging the object 81, a balance control device 50 for controlling the operations of the various devices of the main body 40, and a weighing device as an interface for an operator. 60. Hereinafter, with respect to the balance main body 40, the balance control device 50, and the balance operation device 60, those of the first combination balance 30X are respectively referred to as “first balance body 40X”, “first balance control device 50X”, and “first balance operation device”. 60X ”, and those of the second combination scale 30Y are referred to as“ second scale body 40Y ”,“ second scale control device 50Y ”, and“ second scale operation device 60Y ”, respectively.

With reference to FIG. 2, the detail of a structure of the combination scale 30 is demonstrated.
The scale main body 40 is provided with a main feeder 41 that receives an object 81 to be weighed supplied from the feeder 10. Around the main feeder 41, a plurality of linear feeders 42 for receiving the objects 81 to be weighed supplied from the feeder 41 are provided. A plurality of supply hoppers 43 for receiving the objects to be weighed 81 supplied from the corresponding linear feeders 42 are provided below the outlet side of each linear feeder 42. Below the outlet side of each supply hopper 43, there are provided a plurality of weighing hoppers 44 that receive an object 81 supplied from the corresponding supply hopper 43 and measure its weight. Below each weighing hopper 44, a collecting chute 45 for guiding the objects 81 to be weighed discharged from these hoppers 44 to the packaging machine 20 is provided.

  Further, as a sensor for measuring the amount of the weighing object 81, a strain gauge type first load cell 47 provided below the main feeder 41 and measuring the amount of the weighing object 81 on the feeder 41; A strain gauge type second load cell 48 that is provided corresponding to each weighing hopper 44 and measures the weight of the object 81 on the hopper 44 is provided.

  The main feeder 41 receives a weighing object 81 from the feeder 10 and guides it to the linear feeder 42. The main feeder 41 applies vibrations to the top cone 41A to each weighing object 81 on the cone 41A. The main vibrator 41B is supplied to the linear feeder 42.

  The linear feeder 42 receives a workpiece 81 from the main feeder 41 and guides it to the supply hopper 43. The linear feeder 42 applies vibration to the linear trough 42A and supplies the workpiece 81 on the trough 42A to the supply hopper 43. And a linear vibrator 42B to be supplied.

  The supply hopper 43 and the weighing hopper 44 receive the object 81 and temporarily store the hopper body 43A and the hopper body 44A, respectively, and are provided at the lower part of the body to discharge the object 81 by its own opening operation. It comprises a supply gate 43B and a metering gate 44B. The gates 43B and 44B are opened and closed by actuators 46 provided corresponding to the respective sets of the supply hopper 43 and the weighing hopper 44.

  The collecting chute 45 includes a chute main body 45A that guides the object 81 from the weighing hopper 44 downward, and an collecting funnel 45B that is provided at the outlet of the main body 45A and discharges the object 81 to the packaging machine 20. Has been.

  The scale operating device 60 includes an operation unit 61 for setting operating conditions and the like of the combination scale 30 through an operation by an operator, and a display unit 62 for displaying the production status of the combination scale 30 to the operator. It is configured.

  The scale control device 50 controls the operations of the main vibrator 41B, the linear vibrator 42B, and the actuator 46 based on the signal from the combination scale 30, the signal from the scale operation device 60, the signal from the packaging control device 22, and the like.

With reference to FIG. 3, the configuration of the control system of the weighing system 1 will be described.
The scale control device 50 includes a CPU 51 that executes various arithmetic processes, a ROM 52 that stores various programs and the like, and a RAM 53 that temporarily stores data necessary for the arithmetic processes and the like. . In addition, the following circuits are provided as mediators for signal transmission / reception between the CPU 51 and each instrument of the scale body 40.

  A first vibration control circuit 54 is provided between the CPU 51 and the main vibrator 41B of the main feeder 41 to mediate transmission of signals from the CPU 51 to the main vibrator 41B. Further, a second vibration control circuit 55 that mediates transmission from the CPU 51 to each linear vibrator 42B is provided between the CPU 51 and the linear vibrator 42B of each linear feeder 42. Further, a gate drive circuit 56 that mediates transmission of signals from the CPU 51 to each actuator 46 is provided between the CPU 51 and the actuators 46 corresponding to the supply gates 43B and the measurement gates 44B. A first A / D conversion circuit 57 that mediates reception of signals from the first load cell 47 by the CPU 51 is provided between the CPU 51 and the first load cell 47. Further, a second A / D conversion circuit 58 that mediates reception of signals from the second load cells 48 by the CPU 51 is provided between the CPU 51 and the second load cells 48.

  Between the balance control device 50, the supply control device 12 and the packaging control device 22, transmission of signals from the scale control device 50 to the supply control device 12 and the packaging control device 22, and the supply control device 12 and the packaging control device 22. Is provided with an I / O circuit 71 that mediates transmission of signals to the balance control device 50.

  A communication circuit that mediates transmission of signals from the balance control device 50 to the balance operation device 60 and transmission of signals from the balance operation device 60 to the balance control device 50 between the balance control device 50 and the balance operation device 60. 72 is provided.

  A LAN 73 is provided between the first balance control device 50X and the second balance control device 50Y for sharing data such as production plans and production results between these control devices. That is, the first balance control device 50X and the second balance control device 50Y have the same data as the production plans and production results of the first balance body 40X and the second balance body 40Y, respectively.

  The signals transmitted and received between the scale control device 50 and the packaging control device 22 include a discharge completion signal SA indicating that the object 81 is discharged from the scale body 40 to the packaging machine body 21, and a scale body. 40, a discharge command signal SB indicating that the object to be weighed 81 is requested to be discharged, and the fact that the object to be weighed 81 is bitten into the packaging material 82 when the object to be weighed 81 is packed in the packaging machine body 21. The packaging failure signal SC indicating The discharge completion signal SA is transmitted from the scale control device 50 to the packaging control device 22. The discharge command signal SB and the packaging failure signal SC are transmitted from the packaging control device 22 to the scale control device 50, respectively.

  The scale control device 50 transmits a discharge completion signal SA to the packaging control device 22 at the timing when the opening of the weighing gate 44B is started. The packaging control device 22 completes the packaging of the objects to be weighed 81 discharged from the scale main body 40, and then the discharge command signal SB at the timing when the preparation of the packaging of the objects to be weighed 81 discharged from the scale main body 40 is completed. Is transmitted to the balance controller 50. Further, when the object 81 is bitten into the packaging material 82, a defective packaging signal SC is transmitted to the balance control device 50 when this is detected.

  With reference to FIG. 2, the outline | summary is demonstrated about the control aspect of the balance main body 40 by the balance control apparatus 50. FIG. Hereinafter, a packaging material 82 that has been subjected to a vertical seal and a horizontal seal in a state where the object to be weighed 81 is filled in the packaging machine 20 will be referred to as a packaging product 83.

The scale control device 50 controls the scale body 40 as follows.
(A) When it is detected by the first load cell 47 that the amount of the weighing object 81 on the main feeder 41 is small, a signal for requesting the supply of the weighing object 81 to the feeder 10 is transmitted, The supply machine 10 is caused to supply the weighing object 81 to the top cone 41A.

  (B) When the object 81 is supplied from the linear feeder 42 to the supply hopper 43, the main vibrator 41B is driven to supply the object 81 from the top cone 41A to the linear trough 42A. Then, after driving the main vibrator 41B for a predetermined time, the operation of the vibrator 41B is stopped to prepare for the next supply timing of the object to be weighed 81. In addition, the supply amount of the measurement object 81 from the top cone 41A to the linear trough 42A is changed according to the vibration width and vibration time of the main vibrator 41B.

  (C) When the weighing object 81 is discharged from the supply hopper 43 and the hopper main body 43A is empty, the linear vibrator 42B is driven to supply the weighing object 81 from the linear trough 42A to the hopper main body 43A. Then, after the linear vibrator 42B is driven for a predetermined time, the operation of the vibrator 42B is stopped to prepare for the next supply timing of the object to be weighed 81. The supply amount of the object 81 to be measured from the linear trough 42A to the hopper body 43A is changed according to the vibration width and vibration time of the linear vibrator 42B.

  (D) When the weighing object 81 is discharged from the weighing hopper 44 and the hopper body 44A is empty, the supply gate 43B is opened, and the weighing object 81 is discharged from the hopper body 43A to the hopper body 44A. Then, after the supply gate 43B is opened for a predetermined time, the gate 43B is closed again to prepare for the next discharge timing of the workpiece 81.

  (E) After the time elapsed after the opening operation of the supply gate 43B is started (hereinafter, “elapsed time TP”) reaches a predetermined determination time (hereinafter, “stable time TS”), each second time Based on the measured value of the weight of the weighing object 81 by the load cell 48, combination calculation is performed to determine the combination of the weighing hoppers 44 in which the total weight of the weighing objects 81 of the weighing hoppers 44 is closest to the target weight. .

  (F) The weighing of the corresponding weighing hopper 44 is performed on the condition that the discharge command signal SB from the packaging control device 22 is received after selecting the weighing hopper 44 participating in the discharge of the object 81 by the combination calculation. The gate 44B is opened, and the object 81 is discharged from the hopper body 44A to the chute body 45A. Then, after the weighing gate 44B is opened for a predetermined time, the gate 44B is closed again to prepare for the next discharge timing of the workpiece 81.

With reference to FIG. 4, the weighing cycle of the combination weigher 30 will be described.
The combination weigher 30 uses a unit of weighing cycle (hereinafter referred to as “one weighing cycle”) until the next combination calculation is started on the basis of the time when the combination calculation is started based on the elapsed time TP reaching the stabilization time TS. ). That is, in one weighing cycle, combination calculation, opening / closing operation of the weighing gate 44B, opening / closing operation of the supply gate 43B, vibration operation of the linear vibrator 42B, and vibration operation of the main vibrator 41B are performed. In FIG. 4, “drive” of the supply hopper 43 and the weighing hopper 44 indicates that each hopper is in an open / close operation, and “stop” of the supply hopper 43 and the weighing hopper 44 indicates that each hopper It shows that it is in a closed state.

  At time tA, it is determined that the elapsed time TP from the start of the opening operation of the supply hopper 43 has reached the stable time TS. At this time, the combination calculation is started based on the determination and the calculation is executed for a predetermined time.

  At time tB, the packaging of the object to be weighed 81 discharged in the previous weighing cycle is completed, and the packaging machine 20 prepares for packaging of the next object to be weighed 81. At this time, a discharge command signal SB is transmitted from the packaging control device 22 to the scale control device 50.

  At time tC, the scale control device 50 receives the discharge command signal SB. At this time, an opening operation of the weighing gate 44B of the weighing hopper 44 selected by the combination calculation is started, and a discharge completion signal SA is transmitted from the scale control device 50 to the packaging control device 22. The metering gate 44B is kept closed again after being fully opened.

  At time tD, it is confirmed that a predetermined time has passed since the opening operation of the weighing gate 44B was started. That is, it is determined that the object to be weighed 81 of the weighing hopper 44 is discharged and the hopper main body 44A has an empty space. At this time, the opening operation of the supply gate 43B of the supply hopper 43 is started based on the same determination. The supply gate 43B is kept closed again after being fully opened.

  At time tE, it is confirmed that a predetermined time has passed since the opening operation of the supply gate 43B was started. That is, it is determined that the object to be weighed 81 of the supply hopper 43 is discharged and the hopper body 43A has an empty space. At this time, driving of the corresponding linear feeder 42 is started based on the determination.

  At the next time tA, it is confirmed that a predetermined time has elapsed since the driving of the linear feeder 42 was started. That is, it is determined that a predetermined amount of the measurement object 81 has been supplied to the supply hopper 43. At this time, the driving of the linear feeder 42 is stopped based on the determination. Further, in the balance control device 50, it is determined that the elapsed time TP has reached the stable time TS as the driving of the linear feeder 42 is stopped, and the next combination calculation is started. That is, the previous one weighing cycle is completed and the next one weighing cycle is started.

Details of the combination calculation will be described with reference to FIG. Prior to the description, items related to the configuration and operation of the combination weigher 30 are defined as follows.
A number indicating how many times the current measurement cycle has started since the operation of the measurement system 1 is referred to as “cycle number CN”.
The operation of the combination weigher 30 that discharges the objects to be weighed 81 from the single or plural weighing hoppers 44 based on the result of the combination calculation is referred to as “combined discharge”.
A weighing hopper 44 that participates in combined discharge is referred to as a “discharge weighing hopper”.
The number assigned to each weighing hopper 44 is “weighing hopper number HN”.
The weighing hopper 44 having the weighing hopper number HN “N” is referred to as an “N weighing hopper”.
The weight of the measurement object 81 measured by the second load cell 48 is defined as “measured weight W”.
The measured weight W of the N-th weighing hopper by the second load cell 48 is defined as “measured weight WN”.
The total value of the measured weights W of the objects to be weighed 81 calculated in the combination calculation is “total weight WA”.
The target value of the total weight WA set by the operator through the scale operation device 60 as the target value of the weight of the workpiece 81 to be discharged to the packaging machine main body 21 in one combination discharge is set as “target weight WT”.

  As shown in FIG. 5, when the total number of weighing hoppers 44 provided in the scale body 40 is “10”, the ten weighing hoppers 44 are “1” to “10” as weighing hopper numbers HN, respectively. Number. In this case, the weighing hopper 44 having the weighing hopper number HN “1” is indicated as “No. 1 weighing hopper”, and the measured weight W thereof is indicated as the measured weight W1. In addition, the names of the weighing hopper numbers HN after “2” are also indicated according to this.

In the combination calculation, based on the measured weights W of the weighing hoppers 44, the total weight WA among the combinations of the measured weights W satisfies all the following conditions (selection condition 1) to (selection condition 3). Is calculated.
(Selection condition 1): Total weight WA is equal to or greater than target weight WT.
(Selection condition 2): The difference between the total weight WA and the target weight WT is within an allowable range.
(Selection condition 3): The combination satisfying the above two conditions is closest to the target weight WT.

  For example, the total weight WA of the measured weight W1 of the No. 1 weighing hopper, the measured weight W4 of the No. 4 weighing hopper, the measured weight W7 of the No. 7 weighing hopper, and the measured weight W10 of the No. 10 weighing hopper is (selection condition 1) to When all of (selection condition 3) are satisfied, these four weighing hoppers 44 are selected as the weighing hoppers 44 (discharge weighing hoppers) participating in the combined discharge. On the other hand, when there is no combination that satisfies all of the above (selection condition 1) to (selection condition 3), for example, a new object 81 is put into the weighing hopper 44 from the supply hopper 43, and then the combination calculation is performed again. Etc. are taken.

  The scale control device 50 stores the following data for each weighing cycle in the weighing cycle table shown in FIG. That is, the cycle number CN of the current weighing cycle, the weighing hopper number HN of the discharge weighing hopper in the current weighing cycle, and the total weight WA of the discharge weighing hopper in the current weighing cycle are stored.

  With reference to FIGS. 7 to 15, the control of the balance body 40 (hereinafter, “balance operation control”) performed by the balance control device 50 will be described. Prior to this, each of the items related to the operation and operating conditions of the scale body 40 and the items related to the production plan is defined as follows.

  The number of the objects to be weighed 81, that is, the packaged products 83 discharged from the balance body 40 to the packaging machine main body 21 by the combination discharge and packaged by the main body 21 is defined as “production amount”. This production amount is handled as an increase of “1” every time a discharge completion signal SA is transmitted from the scale control device 50 to the packaging control device 22.

  The production amount of the balance body 40 per unit time is defined as “operation speed VH”. In addition, an initial value of the operation speed VH that is set when the operation of the scale body 40 based on the production plan is set to “initial speed VHS”. The operation speed VH is set by the scale control device 50 based on the production plan set by the operator and the production status at that time.

  The time when the operation of the balance body 40 is scheduled to start is defined as “scheduled start time TMA”. The scheduled start time TMA is set by the scale control device 50 based on the production plan set by the operator.

  The time when the operation of the scale body 40 is to be ended is set as “scheduled end time TMB”. The scheduled end time TMB is set as one element constituting the production plan through the operation of the scale operation device 60 by the operator.

  A period from the scheduled start time TMA to the scheduled end time TMB is defined as “scheduled work time TMC”. In addition, the time at that time is referred to as “real time TMN”. The scheduled work time TMC is calculated by the scale controller 50 based on the scheduled start time TMA and the scheduled end time TMB.

  The elapsed time from the start of the operation of the balance body 40 at the scheduled start time TMA is defined as “production elapsed time TMM”. The elapsed production time TMM is calculated by the scale controller 50 based on the time when production is started (scheduled start time TMA) and the actual time TMN at that time.

  The target value of the production amount for the combination weigher 30 as the whole weighing system 1 is set as “total target production amount PA”. Also, the amount of change in the overall target production amount PA with respect to the scheduled work time TMC is defined as “unit time overall target production amount PAX”. The overall target production amount PA is set as one element constituting the production plan through the operation of the scale operation device 60 by the operator.

  The target value of the production amount for each combination weigher 30 is “individual target production amount PB”. Further, the individual target production amount PB for each of the first combination weigher 30X and the second combination weigher 30Y is defined as “first target production amount PB1” and “second target production amount PB2”. In addition, the amount of change in the individual target production amount PB with respect to the scheduled work time TMC is defined as “unit time individual target production amount PBX”. The individual target production amount PB is set as one element constituting the production plan through the operation of the scale operation device 60 by the operator.

  The actual production amount by the individual combination weigher 30 is defined as “individual actual production amount RB”. Further, the individual actual production amount RB for each of the first combination weigher 30X and the second combination weigher 30Y is defined as “first actual production amount RB1” and “second actual production amount RB2”. The individual actual production amount RB is set to “0” as an initial value, and is incremented by one every time the discharge command signal SB is received by the scale control device 50.

  The actual production amount by the combination weigher 30 as the entire weighing system 1 is referred to as “total actual production amount RA”. The total actual production amount RA is calculated as the total value of the individual actual production amounts RB at that time.

  A value obtained by multiplying the unit time overall target production amount PAX and the production elapsed time TMM is defined as “total target production amount PAY” each time. In addition, the difference between the overall target production amount PAY and the overall actual production amount RA is defined as “total production deviation amount ΔRA”.

  A value obtained by multiplying the unit time individual target production amount PBX and the production elapsed time TMM is set to “individual target production amount PBY each time”. Further, the difference between the individual target production amount PBY and the individual actual production amount RB is referred to as “individual production deviation amount ΔRB” each time.

  The scale control device 50 performs the following processes in the scale operation control. That is, based on the establishment of the production start process for starting the operation of the scale body 40 based on the establishment of the production start condition, the production end process for terminating the operation of the scale body 40 based on the establishment of the production end condition, and the establishment of the production interruption condition. A production interruption process for interrupting the operation of the scale body 40, a production resumption process for resuming the operation of the scale body 40 based on the establishment of the production resumption condition, and an operation speed VH for the scale body 40 set based on the production plan input by the operator The speed setting process to be performed and the plan change process to change the production plan based on the production status of each scale body 40 are performed. The parameters constituting the production plan include the scheduled end time TMB, the overall target production amount PA, and the individual target production amount PB.

  In the production start process, when the actual time TMN reaches the scheduled start time TMA, the production start condition is used, and the operation of the balance body 40 is started based on the establishment of this condition. The determination as to whether or not the production start condition is satisfied and the operation start of the scale body 40 based on the satisfaction of the condition are performed for each combination weigher 30 individually.

  In the production end process, the operation of the balance body 40 is ended based on the fact that this condition is satisfied, with the fact that the individual actual production amount RB has reached the individual target production amount PB. The determination as to whether or not the production end condition is satisfied, and the operation end of the scale body 40 based on the satisfaction of the condition are individually performed for each combination scale 30.

  In the production interruption process, the operation of the balance body 40 is interrupted based on the fact that a preset production interruption condition is satisfied. That is, even when the production end condition is not satisfied, when the production interruption condition is satisfied, the operation of the scale body 40 is stopped based on this. The determination whether or not the production interruption condition is satisfied and the operation interruption of the scale body 40 based on the establishment of the condition are individually performed for each combination scale 30.

  In the production resumption process, the operation of the balance body 40 is resumed based on the fact that a preset production resumption condition is satisfied. That is, when the production resumption condition is established after the operation of the scale body 40 is stopped based on the establishment of the production end condition or the production interruption condition, the operation of the scale body 40 is resumed based on this. The determination as to whether or not the production resumption condition is satisfied and the resumption of the operation of the scale body 40 based on the establishment of the condition are individually performed for each combination weigher 30.

  In the speed setting process, when the scheduled end time TMB and the target production amount PA as the production plan are input through the operation of the scale operation device 60 by the operator, the initial speed VHS is set based on these information. The initial speed VHS based on the production plan is set for each combination weigher 30 individually.

Specifically, in the speed setting process, the scale control device 50 sets the initial speed VHS as follows. That is, the time when the planned end time TMB and the target production amount PA are input is set as a reference time, and the time required to prepare for starting the operation of the scale body 40 is added to the reference time. Set as the scheduled start time TMA. Further, the operation speed VH that satisfies the following (setting condition 1) and (setting condition 2) is set as the initial speed VHS.
(Setting condition 1): After starting the operation of the balance body 40 at the scheduled start time TMA, when the planned end time TMB is reached without changing the operation speed VH and without interrupting the operation of the balance body 40, the actual production The speed is such that the quantity PR is equal to or higher than the target production quantity PA.
(Setting condition 2): It is the slowest speed among the operating speeds VH that satisfy the above conditions.

  In the plan change process, when the operation of one of the first combination weigher 30X and the second combination weigher 30Y is interrupted, that is, between the first combination weigher 30X and the second combination weigher 30Y, there is a deviation in the progress of the production plan. When it occurs, the original production plan entered by the operator is changed.

  Referring to FIGS. 7 and 8, the production mode when the operation of first combination weigher 30X and second combination weigher 30Y is not interrupted until the production end condition is satisfied, and the first combination weigher until the production end condition is satisfied. An example of each of the production modes when the operation of 30X and the second combination weigher 30Y is interrupted will be described.

  In each figure, time TM11 and time TM21 are the scheduled start time TMA, time TM12 time TM22 is the time when a quarter of the scheduled work time TMC has elapsed from the scheduled start time TMA, and time TM13 time TM23 is the scheduled start time. The time when 1/2 of the scheduled work time TMC has elapsed from the time TMA, the time TM14 time TM24 is the time when 3/4 of the scheduled work time TMC has elapsed from the scheduled start time TMA, and the time TM15 time TM25 is scheduled to end Each time TMB is shown. A one-dot chain line LPAY indicates a change in the overall target production amount PAY each time the production elapsed time TMM changes, and a one-dot chain line LPBY indicates a change in the individual target production amount PBY each time the production elapsed time TMM changes.

  First, after the operation of each scale main body 40 is started based on the establishment of the production start condition, the operation of the second scale main body 40Y which is not based on the interruption of the operation of the second scale main body 40Y, that is, the production end condition is satisfied. A production mode when the operation is not stopped will be described. At this time, transitions of the overall actual production amount RA and the individual actual production amount RB are indicated by solid lines LRA1 and LRB1 in FIGS. 7 and 8, respectively.

  Prior to time TM11 or time TM21, that is, the planned end time TMB, the overall target production amount PA, and the individual target production amount PB as a production plan are input through the operation of the first balance operation device 60X and the second balance operation device 60Y by the operator. At that time, the first balance control device 50X and the second balance control device 50Y set the scheduled start time TMA and the initial speed VHS based on these pieces of information. Here, “time TM15” or “time TM25” is set as the scheduled end time TMB, “200” is set as the overall target production quantity PA, and “100” is set as the first target production quantity PB1 and the second target production quantity PB2. Assume that each is set.

  When the time TM11 or the time TM21, that is, the actual time TMN reaches the scheduled start time TMA, the first balance body 40X and the second balance body 40Y are operated by the first balance control device 50X and the second balance control device 50Y, respectively. Be started. Thereafter, each time the discharge command signal SB is received in each scale control device 50, the first actual production amount RB1 and the second actual production amount RB2 are updated to the increasing side.

  When the actual time TMN reaches the scheduled end time TMB without changing the time TM15 or the time TM25, that is, without changing the operation speed VH and the operation interruption of each scale body 40, the total actual production amount RA and the individual actual production amount RB are Each is substantially the same as the overall target production amount PA and the individual target production amount PB. At this time, the operation of the first balance body 40X and the second balance body 40Y is ended by the first balance control device 50X and the second balance control device 50Y, respectively, based on the fact that the production end condition is satisfied.

  As described above, when the production is continued without being interrupted after the operation of each scale body 40 based on the establishment of the production start condition, the total actual production amount RA and the individual actual production amount RB (solid line LRA1 and solid line). LRB1) reaches the overall target production amount PA and the individual target production amount PB without substantially deviating from the individual target production amount PAY and the individual target production amount PBY (the one-dot chain line LPAY and the one-dot chain line LPBY) each time.

  Next, after the operation of each scale body 40 is started based on the satisfaction of the production start condition, the operation of the second balance body 40Y is interrupted, that is, the second balance body 40Y is not based on the satisfaction of the production end condition. A production mode when the operation stop is performed and when the plan change process by each scale control device 50 is not performed will be described. At this time, changes in the overall actual production amount RA, the first actual production amount RB1, and the second actual production amount RB2 are indicated by solid line LRA2, solid line LRB1, and solid line LRB2 in FIGS. 7 and 8, respectively.

  As shown in FIG. 7, when the suspended operation of the second balance body 40Y is resumed after the scheduled end time TMB, the overall actual production amount RA, the first actual production amount RB1, and the second actual production amount RB2 are displayed. Changes as follows.

  Before time TM11, that is, when the scheduled end time TMB, the overall target production amount PA, and the individual target production amount PB as the production plan are input through the operation of the first balance operation device 60X and the second balance operation device 60Y by the operator, In the first balance control device 50X and the second balance control device 50Y, the scheduled start time TMA and the initial speed VHS are set based on these pieces of information. Also here, it is assumed that a production plan similar to the example shown above is input.

  When the time TM11, that is, the actual time TMN reaches the scheduled start time TMA, the operation of the first balance body 40X and the second balance body 40Y is started by the first balance control device 50X and the second balance control device 50Y, respectively. . Thereafter, each time the discharge command signal SB is received in each scale control device 50, the first actual production amount RB1 and the second actual production amount RB2 are updated to the increasing side.

  When the operation of the second balance main body 40Y is interrupted through the operation of the second balance operating device 60Y by the operator at time TM13, the update of the second actual production amount RB2 is also stopped. The second actual production amount RB2 is maintained at a constant value (value “50” at time TM13) until time TM16 when the operation of the second balance body 40Y is resumed.

  When the time TM15, that is, when the actual time TMN reaches the scheduled end time TMB, the first actual production amount RB1 has reached the first target production amount PB1, so that the first balance body 40X is Driving is terminated. On the other hand, the second scale main body 40Y does not end the operation based on the establishment of the production end condition because the second actual production amount RB2 is smaller than the second target production amount PB2. That is, since the second balance body 40Y is in an operation interrupted state at this time, it is treated that the operation is ended because the production end condition is not satisfied although the measurement object 81 is not manufactured. I can't.

  When the operation of the second balance body 40Y is resumed through the operation of the second balance operation device 60Y by the operator at time TM16, the second actual production amount is received each time the discharge command signal SB is received by the second balance control device 50Y. RB2 is updated again to the increasing side.

  At time TM18, that is, when the second actual production amount RB2 reaches the second target production amount PB2, the operation of the second scale body 40Y is terminated based on the establishment of the production end condition. Further, when the overall actual production amount RA as the weighing system 1 has reached the initial overall target production amount PA, the operation of the weighing system 1 is also terminated.

The following is a summary of changes in actual production volume in such cases.
During the period from the time TM11 to the time TM13, the first actual production amount RB1 and the second actual production amount RB2 both increase with the lapse of the operation time without deviating from the individual target production amount PBY every time of the one-dot chain line LPBY. The total actual production amount RA increases with the increase in the first actual production amount RB1 and the second actual production amount RB2 without deviating from the overall target production amount PAY every time of the one-dot chain line LPAY. At this time, the inclination of the overall actual production amount RA is the sum of the inclination of the first actual production amount RB1 and the inclination of the second actual production amount RB2.

  During the period from time TM13 to time TM15, the first actual production amount RB1 increases with the elapse of the operation time without deviating from the individual target production amount PBY every time of the alternate long and short dash line LPBY. Further, the second actual production amount RB2 deviates from the individual target production amount PBY every time of the one-dot chain line LPBY and maintains the value of the time TM13 when the operation is interrupted. Further, the individual production deviation amount ΔRB for the second combination weigher 30Y increases with time. Further, the total actual production amount RA deviates from the total target production amount PAY every time of the one-dot chain line LPAY and increases as the first actual production amount RB1 increases. Further, the total production deviation amount ΔRA for the weighing system 1 increases with the passage of time. At this time, the inclination of the overall actual production amount RA is substantially the same as the inclination of the first actual production amount RB1.

  During the period from time TM15 to time TM16, the first actual production amount RB1 maintains the value of the time TM15 (first target production amount PB1), which is the time when the operation of the first balance body 40X ends. Further, the second actual production amount RB2 maintains the value of the time TM13 when the operation is interrupted. Further, the overall actual production amount RA maintains the value of the time TM15 when the operation of the first balance body 40X ends.

  During the period from time TM16 to time TM18, the first actual production amount RB1 maintains the value at time TM15 (first target production amount PB1), which is the time when the operation of the first balance body 40X is completed. Further, the second actual production amount RB2 increases as the operation time elapses. Further, the overall actual production amount RA increases as the second actual production amount RB2 increases. At this time, the slope of the overall actual production amount RA is substantially the same as the slope of the second actual production amount RB2.

  As described above, when the operation of one scale body 40 is interrupted after the operation of each scale body 40 is started based on the establishment of the production start condition, the first combination scale 30X and the second combination scale 30Y There is a difference in the actual work end time. In the case illustrated here, the time TM15 that is the scheduled end time TMB is the actual work end time of the first combination weigher 30X, and the later time TM18 is the actual work end time of the second combination weigher 30Y, The deviation time ΔTM18, which is the difference between the time TM15 and the time TM18, is the deviation of the work end time of each combination weigher 30. In addition, the actual work end time as the weighing system 1 is time TM18, and the actual work end time of the system 1 is delayed by an amount corresponding to the deviation time ΔTM18 with respect to the scheduled end time TMB.

  As shown in FIG. 8, when the operation of the interrupted second balance body 40Y is resumed before the scheduled end time TMB, the overall actual production amount RA, the first actual production amount RB1, and the second actual production amount RB2 changes as follows. Here, since it is assumed that production from the weighing system 1 is performed in the same manner as the case illustrated in FIG. 7 from time TM21 to time TM23, description of this period is omitted.

  When the operation of the second balance body 40Y is resumed through the operation of the second balance operation device 60Y by the operator at time TM24, the second actual production amount is received each time the discharge command signal SB is received by the second balance control device 50Y. RB2 is updated again to the increasing side.

  When the time TM25, that is, when the actual time TMN has reached the scheduled end time TMB, the first actual production amount RB1 has reached the first target production amount PB1, so that the first balance body 40X is Driving is terminated. On the other hand, the second scale main body 40Y does not end the operation based on the establishment of the production end condition because the second actual production amount RB2 is smaller than the second target production amount PB2.

  At time TM27, that is, when the second actual production amount RB2 reaches the second target production amount PB2, the operation of the second scale body 40Y is terminated based on the establishment of the production end condition. Further, when the overall actual production amount RA as the weighing system 1 has reached the initial overall target production amount PA, the operation of the weighing system 1 is also terminated.

The following is a summary of changes in actual production volume in such cases.
During the period from the time TM21 to the time TM23, the first actual production amount RB1 and the second actual production amount RB2 both increase with the lapse of the operating time without deviating from the individual target production amount PBY every time of the one-dot chain line LPBY. The total actual production amount RA increases with the increase in the first actual production amount RB1 and the second actual production amount RB2 without deviating from the overall target production amount PAY every time of the one-dot chain line LPAY. At this time, the inclination of the overall actual production amount RA is the sum of the inclination of the first actual production amount RB1 and the inclination of the second actual production amount RB2.

  During the period from time TM23 to time TM24, the first actual production amount RB1 increases with the elapse of the operation time without deviating from the individual target production amount PBY every time of the alternate long and short dash line LPBY. Further, the second actual production amount RB2 deviates from the individual target production amount PBY every time of the one-dot chain line LPBY and maintains the value of the time TM23 when the operation is interrupted. Further, the individual production deviation amount ΔRB for the second combination weigher 30Y increases with time. Further, the total actual production amount RA deviates from the total target production amount PAY every time of the one-dot chain line LPAY and increases as the first actual production amount RB1 increases. Further, the total production deviation amount ΔRA for the weighing system 1 increases with the passage of time. At this time, the inclination of the overall actual production amount RA is substantially the same as the inclination of the first actual production amount RB1.

  During the period from time TM24 to time TM25, the first actual production amount RB1 increases with the elapse of the operation time without deviating from the individual target production amount PBY every time of the alternate long and short dash line LPBY. Further, the second actual production amount RB2 increases as the operation time elapses in a state of being deviated from the individual target production amount PBY every time of the one-dot chain line LPBY. In addition, the total actual production amount RA deviates from the total target production amount PAY every time of the alternate long and short dash line LPAY, and increases as the first actual production amount RB1 and the second actual production amount RB2 increase. At this time, the inclination of the overall actual production amount RA is the sum of the inclination of the first actual production amount RB1 and the inclination of the second actual production amount RB2.

  For the period from time TM25 to time TM27, the first actual production amount RB1 maintains the value of the time TM25 (first target production amount PB1) at the end of the operation of the first balance body 40X. Further, the second actual production amount RB2 increases as the operation time elapses. Further, the overall actual production amount RA increases as the second actual production amount RB2 increases. At this time, the slope of the overall actual production amount RA is substantially the same as the slope of the second actual production amount RB2.

  As described above, when the operation of one scale body 40 is interrupted after the operation of each scale body 40 is started based on the establishment of the production start condition, the first combination scale 30X and the second combination scale 30Y There is a difference in the actual work end time. In the case illustrated here, the time TM25 that is the scheduled end time TMB is the actual work end time of the first combination weigher 30X, and the later time TM27 is the actual work end time of the second combination weigher 30Y, The deviation time ΔTM27, which is the difference between the time TM25 and the time TM27, is the deviation of the work end time of each combination weigher 30. Further, the actual work end time as the weighing system 1 is time TM27, and the actual work end time is delayed by an amount corresponding to the deviation time ΔTM27 with respect to the scheduled end time TMB in the system 1 as well.

Examples of cases where the operation of the combination weigher 30 is interrupted include the following.
(A) A case in which when the operator determines that a malfunction has occurred in the combination weigher 30, he himself operates the scale operating device 60 to stop the operation of the combination weigher 30 in order to eliminate this.
(B) A case in which the operation of the combination weigher 30 is stopped when the balance control device 50 determines that a malfunction has occurred in the combination weigher 30.
(C) A case in which the operation of the combination weigher 30 is stopped when the scale control device 50 determines that the type of the packaging material 82 needs to be changed in the packaging machine body 21.

  When the actual work end time is shifted between the first combination weigher 30X and the second combination weigher 30Y as in the above examples shown in FIGS. 7 and 8, the weighing system 1 Although the operation is continued, the first combination weigher 30X has already achieved the production plan and is in a state where the operation has been completed. In such a state, it is difficult to say that the production capacity of the first combination weigher 30X is fully utilized, and this is a decrease from the viewpoint of the production efficiency of the weighing object 81 as the entire weighing system 1. It can be said that there is. Moreover, since the operation time is extended from the initial schedule only for the second combination weigher 30Y for the devices of the next process provided on the downstream side of the feeder 10 and each packaging machine 20, Even in this respect, it can be said that the production efficiency of the entire weighing system 1 is reduced.

  Further, for example, when the following is set as the production plan of the weighing system 1, the production efficiency of the object 81 is also a problem. That is, as the production plan of the weighing system 1, after achieving the first production plan for the weighing object A which is the weighing object 81, the type of the weighing object 81 is changed from the weighing object A to the weighing object B. Thus, a plan for starting the second production plan for the weighing object B may be set.

  In this case, when the work end time shift between the first combination weigher 30X and the second combination weigher 30Y as described above occurs in the production process of the weighing object A, the first combination balance 30Y is finished until the work is finished. Since the second production plan for the combination weigher 30X cannot be started, the production efficiency of the entire weighing system 1 is reduced at this point. The reason why the second production plan for the first combination weigher 30X cannot be started is that the first combination weigher 30X and the second combination weigher 30Y receive the supply of the object 81 from the common feeder 10. .

  In view of this, in the weighing system 1 of the present embodiment, when the operation of the scale main body 40 is interrupted, a plan change process for changing the initial production plan input by the operator is executed, and the work of each combination weigher 30 is completed. The time difference is reduced.

  With reference to FIG.9 and FIG.10, the detail of the change aspect of a production plan is demonstrated. Note that the times TM11 to TM17, the solid line LRB1, the solid line LRB2, the broken line LRB3, and the broken line LRB4 shown in FIG. 9 correspond to those shown in FIG. The solid line LRB2, the broken line LRB3, and the broken line LRB4 correspond to those shown in FIG.

  Here, prior to the description of the change mode of the production plan, each item relating to the production plan and production results in the weighing system 1 is defined as follows. In this embodiment, although the number of combination weighers 30 provided in the weighing system 1 is “2”, the production plan can be changed even when the number of combination weighers 30 is “3” or more. In view of the above, each item is defined assuming that the number of combination weighers 30 is “2” and “3” or more.

  -The value obtained by subtracting the total actual production amount RA at that time from the overall target production amount PA is referred to as the "total remaining production amount DA". The total remaining production amount DA indicates the remaining amount that each combination weigher 30 should produce in order to achieve the production plan of the weighing system 1 as a whole.

  A value obtained by subtracting the individual actual production amount RB from the individual target production amount PB is referred to as an “individual remaining production amount DB”. In particular, the individual remaining production amount DB for the first combination weigher 30X is referred to as “first remaining production amount DB1”, and the individual remaining production amount DB for the second combination weigher 30Y is referred to as “second remaining production amount DB2”. The individual remaining production DB indicates the remaining amount that each combination weigher 30 should produce in order to achieve an individual production plan.

  After the operation of each combination weigher 30 is started based on the establishment of the production start condition, “1” or a plurality of combination weighers 30 in which the operation is interrupted are referred to as “interrupt scales”. Further, “1” or a plurality of combination weighers 30 that are continuously operated when the operation of the combination weigher 30 is interrupted or resumed are referred to as “operating weighers”. Further, “1” or a plurality of combination weighers 30 whose operation has been resumed are referred to as “resume balance”.

  The total number of combination weighers 30 in the weighing system 1 is defined as “total scale NA”. In addition, the total number of balances whose operation is stopped at the time when the operation of “1” or the plurality of combination weighers 30 is interrupted or resumed is referred to as “interrupted balance NB”. Further, the total number of balances that are being operated at the time when the operation of “1” or the plurality of combination weighers 30 is interrupted or resumed is referred to as “operating balance NC”.

  -The total remaining production DA divided by the operating balance NC is defined as “distributed remaining production DC”. The distribution remaining production amount DC indicates the total remaining production amount DA that is equally assigned to “1” or a plurality of operating balances.

  The correction amount of the individual target production amount PB calculated when the operation of the combination weigher 30 is interrupted is referred to as “interruption target correction amount DD”. For the operating balance, the absolute value of the difference between the individual remaining production amount DB and the distribution remaining production amount DC becomes the target correction amount DD at the time of interruption. For the interruption scale, the individual remaining production amount DB becomes the interruption target correction amount DD.

  The correction amount of the individual target production amount PB calculated when the operation of the combination weigher 30 is restarted is referred to as “restart target correction amount DE”. For the operating balance, the absolute value of the difference between the individual remaining production amount DB and the distribution remaining production amount DC becomes the restart target correction amount DE. For the resumption balance, the remaining distribution production amount DC becomes the resumption target correction amount DE.

  The individual target production amount PB input by the operator is set as “initial individual target production amount PC”. Further, the individual target production amount PB corrected based on the remaining distribution production amount DC is referred to as “individual corrected target production amount PD”. In particular, the individual corrected target production amount PD for the first combination weigher 30X is “first corrected target production amount PD1”, and the individual corrected target production amount PD for the second combination weigher 30Y is “second corrected target production amount PD2”. And

  With reference to FIG. 9, a description will be given of how the production plan is changed when the operation of the combination weigher 30 is resumed after the scheduled end time TMB. In the figure, a one-dot chain line LPB1 and a one-dot chain line LPB2 indicate the first target production amount PB1 of the first combination weigher 30X and the second target production amount PB2 of the second combination weigher 30Y, respectively.

When the operation of the second balance main body 40Y is interrupted at the time TM13, the second balance control device 50Y executes the following (Calculation 11) to (Calculation 19) based on this, whereby the first combination balance 30X and The individual target production amount PB of the second combination balance 30Y is changed.
(Calculation 11): The overall remaining production amount DA is calculated by subtracting the overall actual production amount RA from the overall target production amount PA.
(Calculation 12): The first remaining production amount DB1 is calculated by subtracting the first actual production amount RB1 from the first target production amount PB1 (initial individual target production amount PC) for the first balance body 40X.
(Calculation 13): The second remaining production amount DB2 is calculated by subtracting the second actual production amount RB2 from the second target production amount PB2 (initial individual target production amount PC) for the second balance body 40Y.
(Calculation 14): The suspended count NB is subtracted from the total count NA to calculate the operating count NC (“1” in the case shown in FIGS. 7 and 9).
(Calculation 15): The remaining distribution production amount DC is calculated by dividing the total remaining production amount DA by the operating balance NC. If the result of division does not become an integer when the operating balance NC is “2” or more, the fractional part of the distribution remaining production DC after division is rounded up.
(Calculation 16): The absolute value of the difference between the first remaining production amount DB1 and the remaining distribution production amount DC is calculated as the target correction amount DD at the time of interruption of the first combination weigher 30X which is an operating balance.
(Calculation 17): The second remaining production amount DB2 is set as the interruption target correction amount DD of the second combination weigher 30Y which is an interruption balance.
(Calculation 18): The first corrected target production amount PD1 is calculated by adding the interruption target correction amount DD to the first target production amount PB1 of the first combination weigher 30X.
(Calculation 19): The second corrected target production amount PD2 is calculated by subtracting the interruption target correction amount DD from the second target production amount PB2 of the second combination weigher 30Y.

  If each of the above calculations is performed at time TM13, the first target production amount PB1 of the first combination weigher 30X is changed from the initial individual target production amount PC to a first corrected target production amount PD1 larger than this. Further, the second target production amount PB2 of the second combination weigher 30Y is changed from the initial individual target production amount PC to the second corrected target production amount PD2 smaller than this. At the time when this change is made, for the second combination weigher 30Y, since the second actual production amount RB2 and the second corrected target production amount PD2 coincide, the production end condition of the combination weigher 30 is satisfied. Become.

  When the time TM15, that is, when the actual time TMN reaches the scheduled end time TMB, the first actual production amount RB1 has initially reached the individual target production amount PC, but has not reached the first corrected target production amount PD1, Unlike the case indicated by the solid line LRB1 after the time TM15 of 7, the operation of the first combination balance 30X is continued as indicated by the broken line LRB3 in each of FIGS.

When the second balance control device 50Y resumes the operation of the second balance main body 40Y at time TM16, the second balance control device 50Y executes the following (Calculation 21) to (Calculation 29) based on this, whereby the first combination balance 30X and The individual target production amount PB of the second combination balance 30Y is changed. At time TM16, although the production end condition is satisfied for the second combination weigher 30Y, the operation is resumed based on the fact that the production resumption condition is satisfied.
(Calculation 21): The overall remaining production amount DA is calculated by subtracting the overall actual production amount RA from the overall target production amount PA.
(Calculation 22): The first remaining production amount DB1 is calculated by subtracting the first actual production amount RB1 from the first target production amount PB1 (first corrected target production amount PD1) for the first balance body 40X.
(Calculation 23): The suspended count NB is subtracted from the total count NA to calculate the operating count NC (“2” in the case shown in FIGS. 7 and 9).
(Calculation 24): The remaining distribution production amount DC is calculated by dividing the total remaining production amount DA by the operating balance NC. If the result of division does not become an integer when the operating balance NC is “2” or more, the fractional part of the distribution remaining production DC after division is rounded up.
(Calculation 25): The absolute value of the difference between the first remaining production amount DB1 and the distribution remaining production amount DC is calculated as the resuming target correction amount DE of the first combination weigher 30X which is an operating balance.
(Calculation 26): The distribution remaining production amount DC is set as the resuming target correction amount DE of the second combination weigher 30Y that is the resumption balance.
(Calculation 27): The first correction target production amount PD1 is updated by subtracting the restart target correction amount DE from the first target production amount PB1 (first correction target production amount PD1) of the first combination weigher 30X.
(Calculation 28): The second correction target production amount PD2 is updated by adding the restart target correction amount DE to the second target production amount PB2 (second correction target production amount PD2) of the second combination weigher 30Y.

  If each calculation is performed at time TM16, the first target production amount PB1 of the first combination weigher 30X is changed from the first corrected target production amount PD1 before the change to the first corrected target production amount PD1 smaller than this. Is done. Further, the second target production amount PB2 of the second combination weigher 30Y is changed from the second corrected target production amount PD2 before the change to the second corrected target production amount PD2 larger than this. At the time when this change is made, for the second combination weigher 30Y, since the second actual production amount RB2 is lower than the second corrected target production amount PD2, the production end condition of the combination weigher 30 is not satisfied. Become.

  At the time TM18, that is, the first actual production amount RB1 and the second actual production amount RB2 reach the first corrected target production amount PD1 and the second corrected target production amount PD2, respectively, and the first actual production amount RB2 The operation of the balance body 40X and the second balance body 40Y is terminated. Further, when the overall actual production amount RA as the weighing system 1 has reached the initial overall target production amount PA, the operation of the weighing system 1 is also terminated.

  When changing the production plan based on the above procedure when the operation of the second combination balance 30Y is interrupted, the second scale control device 50Y creates a production interruption table shown in FIG. When the production plan is changed based on the above procedure when the operation of the second combination weigher 30Y is resumed, the production resumption table shown in FIG. 11B is created.

  As shown in FIG. 11A, when the operation is interrupted, the total remaining production amount DA is “100”, the first remaining production amount DB1 is “50”, and the second remaining production amount DB2 is “50”. “,” “1” is calculated as the operating balance NC, and “100” is calculated as the remaining distribution production DC. Based on these results, “50” is set as the interruption target correction amount DD for the first combination balance 30X that is the operating balance, and “50” is set as the interruption target correction amount DD for the second combination balance 30Y that is the interruption balance. 50 ”is calculated, whereby the first target production amount PB1 of the first combination weigher 30X is changed from“ 100 ”to“ 150 ”, and the second target production amount PB2 of the second combination weigher 30Y is changed from“ 100 ”to“ 150 ”. 50 ". It should be noted that the interrupted target correction amount DD of the operating balance is used as an addition value for the first target production amount PB1, and the interrupted target correction amount DD of the interrupting balance is used as a subtraction value for the second target production amount PB2. In view of the above, in the figure, positive and negative signs are assigned to the target correction amounts DD at the time of interruption.

  As shown in FIG. 11B, when the operation is resumed, the total remaining production amount DA is “40”, the first remaining production amount DB1 is “40”, and the second remaining production amount DB2 is “0”. ”,“ 2 ”as the operating balance NC, and“ 20 ”as the remaining distribution production DC. Based on these results, “20” is set as the restart target correction amount DE for the first combination weigher 30X that is the operating balance, and “8” is set as the restart target correction amount DE for the second combination balance 30Y that is the interrupting balance. 20 ”is calculated, whereby the first target production amount PB1 of the first combination weigher 30X is changed from“ 150 ”to“ 130 ”, and the second target production amount PB2 of the second combination weigher 30Y is changed from“ 50 ”to“ 70 ". The resumption target correction amount DE of the operating balance is used as a subtraction value for the first target production amount PB1, and the resumption target correction amount DE of the resumption balance is used as an addition value for the second target production amount PB2. In view of the above, in the drawing, each resuming target correction amount DE is given a positive or negative sign.

  As described above in detail, the plan change process is performed, so that the first actual production amount RB1, the second actual production amount RB2, and the overall actual production amount RA after the planned end time TMB (time TM15) are changed. The aspect is different from the case where the plan change process described above based on FIG. 7 is not performed. The following summarizes the differences in the transition modes between the two.

  As shown in FIG. 7, when the plan change process is not performed, after time TM15, the first actual production amount RB1 is in the form of the solid line LRB1, and the second actual production amount RB2 is in the form of the solid line LRB2, In addition, the overall actual production amount RA changes in the form of the solid line LRA2.

  On the other hand, when the plan change process is performed, after time TM15, the first actual production amount RB1 is in the form of a broken line LRB3, the second actual production amount RB2 is in the form of a broken line LRB4, and the overall actual production is performed. The amount RA changes in a manner indicated by a broken line LRA3. In this case, the work end time is substantially the same between the first combination balance 30X and the second combination balance 30Y, and the actual work end time as the weighing system 1 is a time earlier than the time TM18. TM17. That is, the amount of time that the actual work end time of the weighing system 1 is delayed with respect to the scheduled end time TMB is a time ΔTM17 that is shorter than the shift time ΔTM18 when the plan change process is not performed.

  Note that the timing of the weighing operation and the like may not be completely the same between the actual first combination weigher 30X and the second combination weigher 30Y due to individual differences of each weigher and the like (calculation 15 ) And (Calculation 24), the total remaining production amount DA may not be divisible by an integer. Therefore, even when the plan change process is executed, a slight deviation occurs in the work end time of each combination weigher 30. Sometimes. However, even in this case, if the deviation amount of the work end time is within the allowable range, it can be considered that the deviation of the work end time has not substantially occurred.

  With reference to FIG. 10, a description will be given of how the production plan is changed when the operation of the combination weigher 30 is resumed before the scheduled end time TMB. In the figure, a one-dot chain line LPB1 and a one-dot chain line LPB2 indicate the first target production amount PB1 of the first combination weigher 30X and the second target production amount PB2 of the second combination weigher 30Y, respectively.

  When the operation of the second balance main body 40Y is interrupted at the time TM23, the second balance control device 50Y executes the previous (Calculation 11) to (Calculation 19) based on this, whereby the first combination balance 30X and The individual target production amount PB of the second combination balance 30Y is changed.

  If each of the above calculations is performed at time TM23, the first target production amount PB1 of the first combination weigher 30X is changed from the initial individual target production amount PC to a first corrected target production amount PD1 larger than this. Further, the second target production amount PB2 of the second combination weigher 30Y is changed from the initial individual target production amount PC to the second corrected target production amount PD2 smaller than this. At the time when this change is made, for the second combination weigher 30Y, since the second actual production amount RB2 and the second corrected target production amount PD2 coincide, the production end condition of the combination weigher 30 is satisfied. Become.

  When the second balance control device 50Y resumes the operation of the second balance main body 40Y at time TM24, the second balance control device 50Y executes the previous (calculation 21) to (calculation 29) based on this, thereby the first combination balance 30X and The individual target production amount PB of the second combination balance 30Y is changed. At time TM24, although the production end condition is satisfied for the second combination weigher 30Y, the operation is resumed based on the fact that the production resumption condition is satisfied.

  If each calculation is performed at time TM24, the first target production amount PB1 of the first combination weigher 30X is changed from the first corrected target production amount PD1 before the change to the first corrected target production amount PD1 smaller than this. Is done. Further, the second target production amount PB2 of the second combination weigher 30Y is changed from the second corrected target production amount PD2 before the change to the second corrected target production amount PD2 larger than this. At the time when this change is made, for the second combination weigher 30Y, since the second actual production amount RB2 is lower than the second corrected target production amount PD2, the production end condition of the combination weigher 30 is not satisfied. Become.

  When the time TM25, that is, when the actual time TMN reaches the scheduled end time TMB, the first actual production amount RB1 has initially reached the individual target production amount PC, but has not reached the first corrected target production amount PD1. Unlike the case indicated by the solid line LRB1 after the time TM25 of 8, the operation of the first combination balance 30X is continued as indicated by the broken line LRB3 in each of FIGS.

  At the time TM26, that is, the first actual production amount RB1 and the second actual production amount RB2 reach the first corrected target production amount PD1 and the second corrected target production amount PD2, respectively. The operation of the balance body 40X and the second balance body 40Y is terminated. Further, when the overall actual production amount RA as the weighing system 1 has reached the initial overall target production amount PA, the operation of the weighing system 1 is also terminated.

  When changing the production plan based on the above procedure when the operation of the second combination balance 30Y is interrupted, the second balance control device 50Y creates a production interruption table shown in FIG. When the production plan is changed based on the above procedure when the operation of the second combination weigher 30Y is resumed, the production resumption table shown in FIG. 12B is created. The production interruption table shown in FIG. 12 (A) is the same as that shown in FIG. 11 (A), and a description thereof will be omitted.

  As shown in FIG. 12B, when the operation is resumed, “75” is set as the total remaining production amount DA, “75” is set as the first remaining production amount DB1, and “0” is set as the second remaining production amount DB2. “,” “2” is calculated as the operating balance NC, and “38” is calculated as the remaining distribution production amount DC. Based on these results, “38” is set as the resuming target correction amount DE for the first combination weigher 30X which is the operating balance, and “38” is set as the resuming target correction amount DE for the second combination weigher 30Y which is the interrupting balance. 38 ”is calculated, whereby the first target production amount PB1 of the first combination weigher 30X is changed from“ 150 ”to“ 112 ”, and the second target production amount PB2 of the second combination weigher 30Y is changed from“ 50 ”to“ 88 ". The resumption target correction amount DE of the operating balance is used as a subtraction value for the first target production amount PB1, and the resumption target correction amount DE of the resumption balance is used as an addition value for the second target production amount PB2. In view of the above, in the drawing, each resuming target correction amount DE is given a positive or negative sign.

  As described above in detail, the plan change process is performed, so that the first actual production amount RB1, the second actual production amount RB2, and the overall actual production amount RA after the scheduled end time TMB (time TM25) are changed. The aspect is different from the case where the plan change process described above based on FIG. 8 is not performed. The following summarizes the differences in the transition modes between the two.

  As shown in FIG. 8, when the plan change process is not performed, after time TM25, the first actual production amount RB1 is in the form of the solid line LRB1, and the second actual production amount RB2 is in the form of the solid line LRB2. In addition, the overall actual production amount RA changes in the form of the solid line LRA2.

  On the other hand, when the plan change process is performed, after the time TM25, the first actual production amount RB1 is in the form of the broken line LRB3, the second actual production amount RB2 is in the form of the broken line LRB4, and the overall actual production. The amount RA changes in a manner indicated by a broken line LRA3. In this case, the work end time is substantially the same between the first combination balance 30X and the second combination balance 30Y, and the actual work end time as the weighing system 1 is a time earlier than the time TM27. TM26. That is, the amount of time that the actual work end time of the weighing system 1 is delayed with respect to the scheduled end time TMB is a time ΔTM26 that is shorter than the shift time ΔTM27 when the plan change process is not performed.

  With reference to FIGS. 13 to 15, the “basic operation control process”, the “first plan change process”, and the “second process” are defined for the scale operation control including the plan change process described above. Details of the contents of the “plan change process” will be described. These processes are performed in each of the first balance control device 50X and the second balance control device 50Y.

In the “basic operation control process” in FIG. 13, it is determined in step S <b> 110 whether or not a production interruption condition for the scale body 40 is satisfied. As the production interruption conditions, the following (interruption conditions 1) to (interruption conditions 3) are employed. That is, in step S110, based on the fact that at least one of these conditions is satisfied, it is determined that the production interruption condition for the balance body 40 is satisfied.
(Interruption condition 1): The balance control device 50 determines that it is necessary to stop the operation of the balance body 40 through a separate process.
(Interruption condition 2): A signal for requesting the operation stop of the scale body 40 is received from the scale operating device 60.
(Interruption condition 3): A signal for requesting the operation stop of the balance body 40 is received from the packaging control device 22.

  An example of the case where the above (interruption condition 1) is satisfied is when the scale control device 50 determines that an operation failure has occurred in the scale body 40. Moreover, as an example of the case where the above (interruption condition 2) is satisfied, there is a case where an operation of the scale operation device 60 for interrupting the operation of the scale body 40 is performed by an operator. An example of the case where the above (interruption condition 3) is satisfied is when the packaging control device 22 determines that a packaging failure of the packaging machine body 21 has occurred.

  If it is determined in step S110 that the production interruption condition is not satisfied, it is determined in next step S170 whether the production end condition is satisfied. On the other hand, when it is determined that the production interruption condition is satisfied, the operation of the balance main body 40 is interrupted in step S120, and the "first plan change process" in FIG. 14 is executed in step S130, and the process ends. After that, the process of step S140 is performed. The production plan of the other combination weigher 30 changed through the “first plan change process” is reflected in the scale control device 50 corresponding to the other combination weigher 30. That is, when the first balance control device 50X executes the change of the production plan of each combination balance 30, the change contents of the production plan of the second combination balance 30Y are set in the second combination control device 50Y. This is reflected in the 30Y production plan. On the other hand, when the second balance control device 50Y executes the change of the production plan of each combination balance 30, the change content of the production plan of the first combination balance 30X is set to the first combination balance set in the first balance control device 50X. This is reflected in the 30X production plan.

In step S140, it is determined whether a production resumption condition for the scale body 40 is satisfied. As the production resumption conditions, the following (resumption conditions 1) to (resumption conditions 3) are employed. That is, in step S140, based on the fact that at least one of these conditions is satisfied, it is determined that the production resumption condition for the scale body 40 is satisfied.
(Resume condition 1): When the operation of the balance body 40 is suspended based on the above (interruption condition 1), it is determined that the balance control device 50 permits the resumption of the operation of the scale body 40 through a separate process.
(Resume condition 2): When the operation of the balance body 40 is suspended based on the above (interrupt condition 2), a signal requesting the resumption of the operation of the scale body 40 is received from the scale operation device 60.
(Resume condition 3): When the operation of the balance body 40 is suspended based on the above (interrupt condition 3), a signal requesting the resumption of the operation of the scale body 40 is received from the packaging control device 22.

  If it is determined in step S140 that the production resumption condition is not satisfied, it is determined in next step S170 whether the production end condition is satisfied. On the other hand, when it is determined that the resumption condition is satisfied, the “second plan change process” in FIG. 15 is executed in step S150, and after the process is completed, the operation of the scale body 40 is resumed in step S160. . The production plan of the other combination weigher 30 changed through the “second plan change process” is reflected in the scale control device 50 corresponding to the other combination weigher 30.

  In step S170, it is determined whether or not the production end condition is satisfied, that is, whether or not the individual actual production amount RB has reached the individual target production amount PB. In step S180, the operation of the balance body 40 is stopped.

  In step S190, it is determined whether or not the production plan for the entire weighing system 1 has been achieved, that is, whether or not the overall actual production amount RA has reached the overall target production amount PA. When it is determined that the production plan has been achieved, the display unit 62 displays that the production plan has been achieved, and the operation of the scale body 40 is terminated.

In the “first plan change process” in FIG. 14, the following processes are performed.
In step S210, an overall remaining production amount DA is calculated by subtracting the overall actual production amount RA from the overall target production amount PA. In Step S220, the individual remaining production amount DB is calculated by subtracting the individual actual production amount RB from the individual target production amount PB.

  In step S230, the total remaining production amount DA is divided by the operating balance NC to calculate the distribution remaining production amount DC. In step S240, the absolute value of the difference between the individual remaining production amount DB and the distribution remaining production amount DC is calculated as the interruption target correction amount DD for the operating balance. In step S250, the individual remaining production amount DB is set as the interruption target correction amount DD for the interruption scale.

  In step S260, the individual corrected target production amount PD is calculated by adding the interruption target correction amount DD to the individual target production amount PB for the operating balance. In step S270, the individual corrected target production amount PD is calculated by subtracting the interruption target correction amount DD from the individual target production amount PB for the interruption scale.

In the “second plan change process” in FIG. 15, the following processes are performed.
In step S310, an overall remaining production amount DA is calculated by subtracting the overall actual production amount RA from the overall target production amount PA. In step S320, the individual actual production amount RB is subtracted from the individual target production amount PB for the operating balance to calculate the individual remaining production amount DB.

  In step S330, the total remaining production amount DA is divided by the operating balance NC to calculate the distribution remaining production amount DC. In step S340, the absolute value of the difference between the individual remaining production amount DB and the distribution remaining production amount DC is calculated as the restart target correction amount DE for the operating balance. In step S350, the remaining distribution production amount DC is set as the restart target correction amount DE for the resumption balance.

  In step S360, the individual correction target production amount PD is calculated by subtracting the restart target correction amount DE from the individual target production amount PB for the operating balance. In step S370, the resuming target correction amount DE is added to the individual target production amount PB for the resumption balance to calculate the individual corrected target production amount PD.

According to the present embodiment described above, the following effects can be obtained.
(1) In this embodiment, a plurality of combination weighers 30 share information related to production. Thereby, since it becomes possible to control each combination balance 30 in consideration of each production situation of a plurality of combination balances 30, the production plan as the whole weighing system 1 can be achieved efficiently.

  (2) In this embodiment, when there is a difference in progress with respect to the production plan between the first combination balance 30X and the second combination balance 30Y, the production plan is changed to reduce this difference. Thereby, the production plan as the whole weighing system 1 can be achieved more efficiently.

  (3) In the present embodiment, the production plan is changed based on the interruption of the operation of the first combination weigher 30X or the second combination weigher 30Y. That is, the production plan is changed when a delay occurs in the progress status of the entire weighing system 1 with respect to the production plan. Thereby, the delay of such a progress situation can be compensated and the production plan as the whole weighing system 1 can be achieved more efficiently.

  (4) In the present embodiment, the individual target production amount PB of the combination weigher 30 whose operation has been interrupted is made smaller than the initial individual target production amount PC. That is, because the remaining necessary production amount for achieving the production plan of the entire weighing system 1 is reduced in the amount allocated to the interruption scale, the operation of the combination scale 30 is interrupted. It can suppress suitably that the achievement time of a production plan becomes too late.

  (5) In this embodiment, the difference between the initial individual target production amount PC and the individual corrected target production amount PD of the suspended scale is set as the target reduction amount, and the individual target production amount PB of the combination weigher 30 that is continuously operated is The target weight loss is allocated. That is, the overall target production amount PA is maintained while the individual target production amount PB of the interrupting balance is reduced. Accordingly, it is possible to suppress both the achievement of the production plan for the entire weighing system 1 from being excessively delayed and the production plan for the entire weighing system 1 from being excessively deviated from the initial one.

  (6) In this embodiment, when the operation of the combination weigher 30 is resumed, the individual target production amount PB of the weigher 30 is made larger than the value at that time. That is, because the remaining necessary production amount for achieving the production plan of the entire weighing system 1 is increased by the amount allocated to the resumption balance, the operation of the combination weigher 30 is interrupted. It can suppress suitably that the achievement time of a production plan becomes too late.

  (7) In this embodiment, the initial speed VHS is set by the scale control device 50 based on the scheduled end time TMB and the target production amount PA. As a result, it is not necessary for the operator to examine the preferred operating speed VH before the start of production, so the burden on the operator can be reduced.

  (8) In particular, when the operator's proficiency level regarding the operation of the combination weigher 30 is low, it takes time to study the initial speed VHS for achieving the production plan, and there is a concern that the operation start time may be delayed. The In this regard, according to the configuration of the present embodiment, since the initial speed VHS is set by the scale control device 50, the above-mentioned concerns can be solved.

  (9) In the present embodiment, one of the setting conditions for the initial speed VHS (setting condition 2), that is, the slowest speed among the operating speeds VH that can achieve the production plan is adopted. As a result, a longer stabilization time TS is ensured, so that the measurement accuracy of the weight of the object 81 by the second load cell 48 can be improved. In addition, since the operating speed of the packaging machine body 21 is set according to the initial speed VHS, there is a margin in the time for sealing the packaging material 82 in the packaging machine body 21, so that the frequency of defective packaging is reduced. can do.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIGS. In addition, in this embodiment, about the structure which is common in the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The weighing system 1 of the present embodiment is configured by adding the following changes to the weighing system 1 of the first embodiment. That is, in the weighing system 1 of this embodiment, when the operation of the scale body 40 is interrupted, that is, when it is predicted that the production of the weighing system 1 will not be finished by the scheduled end time TMB, the original production plan is changed. In addition to the plan change process of the first embodiment, the speed change process for changing the operating speed VH of the scale body 40 is performed.

  In this speed changing process, the “first speed changing process” (FIG. 17) for changing the operating speed VH of the operating balance when the operation of the weighing scale body 40 is interrupted, and the operation of the weighing scale body 40 is resumed. The “second speed changing process” (FIG. 18) for changing the operating speed VH of the operating scale and the restarting scale is sometimes included. That is, the “basic operation control process” (FIG. 16) of the present embodiment corresponds to the “basic operation control process” (FIG. 13) of the first embodiment added with the speed change process described above.

Here, the items relating to the production plan and the operation speed are defined as follows.
The time obtained by subtracting the production elapsed time TMM from the scheduled work time TMC is defined as “scheduled remaining time TMD”. The scheduled remaining time TMD is calculated by the scale control device 50 based on the time when production is started (scheduled start time TMA) and the production elapsed time TMM at that time.

  The operation speed VH obtained by dividing the individual remaining production volume DB by the scheduled remaining time TMD is set as the “update speed VHR”. The update speed VHR is calculated by the balance control device 50 based on the individual remaining production volume DB and the scheduled remaining time TMD each time the individual correction target production amount PD is newly calculated.

  In the “first speed changing process” and the “second speed changing process”, the operating speed VH of the scale body 40 is basically changed so that the production of the weighing system 1 is completed by the scheduled end time TMB. However, depending on the length of the scheduled remaining time TMD, the operating speed VH at which the production of the weighing system 1 can be finished by the scheduled end time TMB may exceed the upper limit speed VHX of the scale body 40. In this case, priority is given to ensuring weighing accuracy over the completion of production of the weighing system 1 by the scheduled end time TMB, and setting of the update speed VHR as the new operating speed VH of the operating scale is prohibited. The upper limit speed VHX is preset and stored in the balance control device 50 based on the operation performance of the balance body 40 and the weighing accuracy required for the balance body 40.

The balance control device 50 shortens the length of one weighing cycle when the calculated update speed VHR is larger than the operation speed VH set at that time, that is, when the operation speed VH needs to be increased more than before. To do. Here, the stabilization time TS elapses after the timing of starting the combination calculation with the elapse of the stabilization time TS (period from time tD to tA in FIG. 4), that is, after the supply hopper 43 is opened. By shortening the timing at which the determination is made, the length of one weighing cycle is shortened. Specific examples thereof include the following (Abbreviated Aspect 1) to (Abbreviated Aspect 3), of which (Abbreviated Aspect 1) is adopted.
(Shortening mode 1): The length of the stable time TS is shortened from that set in advance.
(Shortening mode 2): The start timing of the opening operation of the supply hopper 43 is accelerated. When this is implemented in the example shown in FIG. 4, the period in which the opening / closing operation of the supply hopper 43 and the opening / closing operation of the weighing hopper 44 overlap is further increased.
(Shortening mode 3): The above shortening modes are combined.

  The details of the “basic operation control process”, “first speed change process”, and “second speed change process” of the present embodiment will be described with reference to FIGS. These processes are performed in each of the first balance control device 50X and the second balance control device 50Y.

  In the “basic operation process” in FIG. 16, the same processes as steps S <b> 110 to S <b> 130 of the “basic operation process” of the first embodiment are executed, and then the “first speed change process” in FIG. 17 is executed in step S <b> 400. To do. After the process is completed, the same processes as steps S140 and S150 of the “basic operation process” of the first embodiment are executed, and then the “second speed changing process” of FIG. 18 is executed in step S500. . After the process is completed, the same processes as steps S160 to S190 of the “basic operation process” of the first embodiment are executed.

In the “first speed change process” in FIG. 17, the following processes are performed.
In step S410, the update rate VHR is calculated by dividing the individual remaining production DB of the operating balance by the scheduled remaining time TMD. As the individual remaining production amount DB here, the individual remaining production amount DB of the operating balance after the individual corrected target production amount PD is calculated in the “first plan change process” is used.

  In step S420, it is determined whether or not the update speed VHR calculated in step S410 is lower than the upper limit speed VHX of the scale body 40. When the update speed VHR is smaller than the upper limit speed VHX, the update speed VHR is set as a new operation speed VH of the operation scale in step S430. When the update speed VHR is the same as or higher than the upper limit speed VHX, the upper limit speed VHX is set as a new operation speed VH of the operating scale in step S440.

In the “second speed changing process” in FIG. 18, the following processes are performed.
In step S510, the update rate VHR is calculated by dividing the individual remaining production DB of the operating balance by the scheduled remaining time TMD. As the individual remaining production amount DB here, the individual remaining production amount DB of the operating balance after the individual corrected target production amount PD is calculated in the “second plan change process” is used.

  In step S520, it is determined whether or not the update speed VHR calculated in step S510 is smaller than the upper limit speed VHX of the scale body 40. When the update speed VHR is smaller than the upper limit speed VHX, the update speed VHR is set as a new operation speed VH of the operation scale in step S530. When the update speed VHR is the same as or higher than the upper limit speed VHX, the upper limit speed VHX is set as a new operation speed VH of the operating scale in step S540.

  In step S550, the renewal speed VHR is calculated by dividing the individual remaining production DB of the resumption balance by the scheduled remaining time TMD. As the individual remaining production DB here, the individual remaining production DB of the resumption scale after the individual corrected target production PD is calculated in the “second plan change process” is used.

  In step S560, it is determined whether or not the update speed VHR calculated in step S550 is smaller than the upper limit speed VHX of the scale body 40. When the update speed VHR is smaller than the upper limit speed VHX, the update speed VHR is set as a new operation speed VH of the resumption scale in step S570. When the update speed VHR is the same as or higher than the upper limit speed VHX, the upper limit speed VHX is set as the new operation speed VH of the resumption scale in step S580.

  With reference to FIG. 19, a production mode when the operation of the second balance body 40Y is interrupted from the middle of production by the weighing system 1 to the end of production will be described. At this time, transitions of the overall actual production amount RA, the first actual production amount RB1, and the second actual production amount RB2 are indicated by the solid line LRA1, the solid line LRB1, and the solid line LRB2 in FIG. 19, respectively.

  Before time TM31, that is, when the scheduled end time TMB, the overall target production amount PA, and the individual target production amount PB as the production plan are input through the operation of the first balance operation device 60X and the second balance operation device 60Y by the operator, In the first balance control device 50X and the second balance control device 50Y, the scheduled start time TMA and the initial speed VHS are set based on these pieces of information.

  When the time TM31, that is, the actual time TMN reaches the scheduled start time TMA, the operation of the first balance body 40X and the second balance body 40Y is started by the first balance control device 50X and the second balance control device 50Y, respectively. .

  At time TM33, that is, when the operation of the second balance main body 40Y is interrupted by the second balance control device 50Y, the update of the second actual production amount RB2 is also stopped. At this time, the operation speed VH of the first balance body 40X as the operation scale is changed from the initial speed VHS set at that time to the update speed VHR larger than this by the “first speed change process” of FIG. The

  The update speed VHR is calculated as a value obtained by dividing “100”, which is the individual remaining production volume DB (first remaining production volume DB1) of the first balance body 40X, by the difference between the time TM35 and the time TM33, which is the scheduled remaining time TMD. Is done.

  When the time TM35, that is, when the actual time TMN reaches the scheduled end time TMB, the first actual production amount RB1 has reached the first target production amount PB1, so that the first balance body 40X is Driving is terminated. Further, when the overall actual production amount RA as the weighing system 1 has reached the initial overall target production amount PA, the operation of the weighing system 1 is also terminated.

  As described above, during the period from time TM31 to time TM33, the operating speed VH of the first scale body 40X and the second scale body 40Y is both the initial speed VHS. In the period from time TM33 to time TM35, the operating speed VH of the first balance body 40X becomes the update speed VHR, and the operation speed VH of the second scale body 40Y becomes “0” due to the stop of the operation.

  In addition, by changing the operation speed VH of the first balance body 40X in this way, the production of the weighing system 1 can be performed even when the operation of the second balance body 40Y is interrupted after the production of the measurement system 1 is started. Can be terminated at the scheduled end time TMB.

  With reference to FIG. 20, the production mode when the operation of the second scale body 40Y is interrupted during the production by the weighing system 1 and the operation of the second scale body 40Y is resumed thereafter will be described. At this time, transitions of the overall actual production amount RA, the first actual production amount RB1, and the second actual production amount RB2 are indicated by the solid line LRA1, the solid line LRB1, and the solid line LRB2 in FIG.

  Before time TM41, that is, when the scheduled end time TMB, the overall target production amount PA, and the individual target production amount PB as the production plan are input through the operation of the first balance operation device 60X and the second balance operation device 60Y by the operator, In the first balance control device 50X and the second balance control device 50Y, the scheduled start time TMA and the initial speed VHS are set based on these pieces of information.

  When the time TM41, that is, the actual time TMN reaches the scheduled start time TMA, the operation of the first balance body 40X and the second balance body 40Y is started by the first balance control device 50X and the second balance control device 50Y, respectively. .

  At time TM43, that is, when the operation of the second balance body 40Y is interrupted by the second balance control device 50Y, the update of the second actual production amount RB2 is also stopped. At this time, the operation speed VH of the first balance body 40X as the operation scale is changed from the initial speed VHS set at that time to the update speed VHR11 higher than this by the “first speed change process” in FIG. The

  The update speed VHR11 is calculated as a value obtained by dividing “100”, which is the individual remaining production volume DB (first remaining production volume DB1) of the first balance body 40X, by the difference between the time TM45 and the time TM43, which are the scheduled remaining time TMD. Is done.

  When the operation of the second scale main body 40Y is resumed through the operation of the second scale operation device 60Y by the operator at time TM44, the update of the second actual production amount RB2 is also resumed. At this time, the operation speed VH of the first balance body 40X as the operation scale is changed from the update speed VHR11 set at that time to the update speed VHR12 smaller than this by the “second speed change process” in FIG. The Further, the operation speed VH of the second balance body 40Y as the resumption scale is updated to the update speed VHR22 by the “second speed change process” in FIG.

  The update speed VHR12 is calculated as a value obtained by dividing “25”, which is the individual remaining production volume DB (first remaining production volume DB1) of the first balance body 40X, by the difference between the time TM45 and the time TM44, which are the scheduled remaining time TMD. Is done. The update speed VHR22 is a value obtained by dividing “25”, which is the individual remaining production volume DB (second remaining production volume DB2) of the second balance body 40Y, by the difference between the time TM45 and the time TM44, which are the scheduled remaining time TMD. Calculated.

  When the time TM45, that is, when the actual time TMN reaches the scheduled end time TMB, the first actual production amount RB1 has reached the first target production amount PB1, so that the first balance body 40X is Driving is terminated. Further, when the second actual production amount RB2 reaches the second target production amount PB2, the operation of the second scale body 40Y is terminated based on the establishment of the production end condition. Further, when the overall actual production amount RA as the weighing system 1 has reached the initial overall target production amount PA, the operation of the weighing system 1 is also terminated.

  As described above, in the period from time TM41 to time TM43, the operating speed VH of the first balance body 40X and the second scale body 40Y is both the initial speed VHS. In the period from time TM43 to time TM44, the operating speed VH of the first balance body 40X becomes the update speed VHR11, and the operating speed VH of the second scale body 40Y becomes “0” due to the stop of the operation. In the period from time TM44 to time TM45, the operating speed VH of the first balance body 40X is the update speed VHR12, and the operation speed VH of the second scale body 40Y is the update speed VHR22.

  Further, when the operation speed VH of the first balance body 40X and the second balance body 40Y is changed in this way, the operation of the second balance body 40Y is interrupted after the production of the weighing system 1 is started. The production of the weighing system 1 can be ended at the scheduled end time TMB.

  According to this embodiment described above, the effect of (1) of the first embodiment, that is, the effect that the production plan as the entire weighing system 1 can be efficiently achieved, and (2) to In addition to the effect (9), the following effects can be achieved.

  (10) In this embodiment, when the operation of the balance body 40 is interrupted, that is, when it is predicted that the production of the weighing system 1 will not be completed by the scheduled end time TMB, the operation speed VH of the operation scale is changed. Do. As a result, the difference between the actual production end time and the scheduled end time TMB can be reduced.

  (11) In this embodiment, when the operation of the balance body 40 is interrupted, the operation speed VH of the operation scale is changed so that the production of the measurement system 1 is completed by the scheduled end time TMB. As a result, the production of the weighing system 1 can be completed by the scheduled end time TMB even when the production progress is delayed due to the interruption of the operation of the scale body 40.

  (12) In this embodiment, when the calculated update speed VHR is the same as or higher than the upper limit speed VHX, it is prohibited to set the calculated update speed VHR as the new operation speed VH of the operating scale. Yes. Thereby, it can suppress that the fall of a measurement precision resulting from the change of the driving speed VH of a driving balance arises.

(Other embodiments)
The embodiment of the present invention is not limited to the contents of the above embodiments, and can be modified as shown below, for example. The following modifications are not applied only to the above embodiments, and different modifications can be combined with each other.

  In the second embodiment, the update speed VHR that can finish the production of the weighing system 1 by the scheduled end time TMB is calculated, and the update speed VHR is calculated when the update speed VHR is smaller than the upper limit speed VHX. Although it is set as a new operating speed VH of the operating balance, the change mode of the operating speed VH of the operating balance can be changed as follows. That is, the update speed VHR at which the production of the weighing system 1 ends beyond the scheduled end time TMB is calculated, and when the update speed VHR is smaller than the upper limit speed VHX, the update speed VHR is used as the new operation speed VH of the operating scale. Can also be set. Also in this case, the operating speed VH of the operating scale is changed by calculating the operating speed VH, which is larger than the operating speed VH set when the operation of the balance body 40 is interrupted, as the update speed VHR. The production of the weighing system 1 can be completed earlier than in the case where there is not.

  In short, the basic idea for changing the operating speed VH of the operating balance in the second embodiment is that the production of the weighing system 1 is performed until the scheduled end time TMB even when the operation of the scale body 40 is interrupted. However, the production plan for the entire weighing system 1 can be efficiently achieved without following this concept. In other words, when there is a delay in the production progress of one balance body 40, the operation of the second embodiment is performed as long as the operation speed VH of the other balance body 40 is changed to compensate for this delay. Even if a change mode different from the change mode of the speed VH is adopted, the production plan for the entire weighing system 1 can be efficiently achieved.

  In the second embodiment, the operation speed VH of the scale body 40 is changed when the operation of the scale body 40 is interrupted or restarted. However, the operation speed VH may be changed at other times. it can. That is, when it is predicted that the production of the weighing system 1 will not be completed by the scheduled end time TMB in a state where the production of each balance body 40 is continued, the operating speed VH of at least one of the balance bodies 40 is changed. You can also. In this case, the update rate VHR is calculated by calculating the mode in which the production of the weighing system 1 is completed by the scheduled end time TMB (second embodiment), or the production of the weighing system 1 is the planned end time TMB. It is possible to employ an aspect (above modified example) that calculates what ends beyond.

  In the second embodiment, when the operation of the balance body 40 is interrupted, the operation speed VH of the operation scale is changed by predicting that the production of the measurement system 1 will not be completed by the scheduled end time TMB. However, the mode of prediction as to whether or not the production of the weighing system 1 will be finished by the scheduled end time TMB is not limited to this. For example, in a state in which each scale body 40 continues production, the time at which the production of the weighing system 1 ends is calculated based on the individual remaining production DB and the operation speed VH of each scale body 40, and this calculation is performed. By comparing the predicted end time and the planned end time TMB, it is predicted whether the production of the weighing system 1 will be completed by the planned end time TMB. Then, when the predicted end time exceeds the scheduled end time TMB, by changing the operating speed VH of at least one of the scale bodies 40, the production of the weighing system 1 can be performed as compared with the case where the operating speed VH is not changed. Can be completed quickly. As a calculation mode of the update rate VHR in this case, the same mode as the second embodiment or the same mode as the above modification can be adopted.

In each of the above embodiments, the length of one metering cycle is shortened by shortening the stabilization time TS from that set in advance, thereby increasing the operating speed VH. However, the operating speed VH is changed. Is not limited to this, and can be changed to, for example, the following (A) or (B).
(A) The start timing of the operation of the supply hopper 43 and the linear feeder 42 is accelerated. When this is performed in the example shown in FIG. 4, the overlap time between the opening / closing operation of the weighing hopper 44 and the opening / closing operation of the supply hopper 43 is further increased.
(B) The above (A) is combined with at least one of the (shortening mode 1) to (shortening mode 3) of the embodiment.

  In each of the above embodiments, the length of one measurement cycle is changed by directly extending or shortening the stabilization time TS, but the change mode of the stabilization time TS is not limited to this. For example, the stabilization time TS can be changed as a result of changing the filtering execution time of data transmitted from the second load cell 48 of the weighing hopper 44 to the CPU 51.

  In each of the above embodiments, the scale control device 50 that has suspended or restarted the operation of the scale body 40 executes the “first plan change process” or the “second plan change process”, and the production plan for the other combination scale 30 However, the change mode of the production plan of each combination weigher 30 is not limited to this. That is, one of the plurality of scale control devices 50 is positioned in advance as a leader of each control device, and when the operation of the scale main body 40 is interrupted or resumed, the scale control device 50 as the leader always has It is also possible to change the production plan.

  In each of the above-described embodiments, it is assumed that the same value is set as the initial individual target production amount PC. However, the initial individual target production amount PC may be set to a different value between the plurality of combination weighers 30. it can.

  In each of the above embodiments, the individual target production amount PB is changed when the operation of the combination weigher 30 is interrupted and thereafter when the operation of the combination weigher 30 is resumed. However, the modification is not limited to this. For example, the individual target production amount PB can be changed only when the operation of the combination weigher 30 is resumed. In addition, the individual target production amount PB can be changed when the actual time TMN reaches the scheduled end time TMB.

  In each of the above embodiments, the production plan is changed based on the operation of the combination weigher 30 being interrupted. However, the production plan change mode is not limited to this. For example, when it is confirmed that there is a deviation in the progress status of each production plan in a state where the operations of both the first combination balance 30X and the second combination balance 30Y are continued, this deviation is determined. It is also possible to change the production plan of at least one of the first combination weigher 30X and the second combination weigher 30Y in the decreasing direction.

In each of the above embodiments, the initial speed VHS is set including (setting condition 2). However, the initial speed VHS can be set by omitting the same condition.
In each of the above embodiments, the number of the objects to be weighed 81 discharged from the scale body 40 to the packaging machine body 21 is sent as a packaged product 83 to the subsequent process as a “production amount”. Although the operation control is performed, the operation control can be performed by changing the definition of the production amount as follows. That is, the weight of the weighing object 81 discharged from the balance body 40 to the packaging machine body 21 by the combined discharge is defined as “production amount”. In this case, the production amount in one metering cycle corresponds to the total weight WA in one combined discharge.

  In each of the above-described embodiments, the scale operation device 60 that allows the operator to input the scheduled end time TMB and the target production amount PA is used as the production plan. However, the configuration of the device 60 is not limited thereto. For example, in addition to the above, a scale operation device 60 in which the operator can input the scheduled start time TMA is adopted, and the scale controller 50 determines the initial speed based on the scheduled start time TMA, the scheduled end time TMB, and the target production amount PA. VHS can also be set.

  In each of the above embodiments, the period from the start timing of the opening operation of the supply hopper 43 (time tD in FIG. 4) to the drive stop timing of the linear feeder 42 (time tA in FIG. 4) is set as the stable time TS. However, the setting mode of the stable time TS is not limited to this. For example, the stable time TS can be set from the start timing of the opening operation of the supply hopper 43 to a predetermined timing (after time tA in FIG. 4) after the driving of the linear feeder 42 is stopped. Alternatively, the stable time TS can be set from the start timing of the opening operation of the supply hopper 43 to the predetermined timing (time tA in FIG. 4) after the supply hopper 43 is closed and before the linear feeder 42 is stopped.

  In each of the above embodiments, the discharge command signal SB is transmitted from the packaging control device 22 to the scale control device 50 at the timing when the production of one packaging product 83 is completed, but the transmission timing of the signal is limited to this. is not. For example, the discharge command signal SB can be transmitted to the balance control device 50 at a timing when a predetermined time has elapsed after the manufacture of the packaged product 83 is completed.

  In each of the above embodiments, by sending the discharge command signal SB from the packaging control device 22 to the balance control device 50, the balance control device 50 recognizes that the production of one packaged product 83 has been completed. The method for causing the scale control device 50 to recognize the completion is not limited to this. For example, in the balance control device 50, an elapsed time from the start of the opening operation of the weighing hopper 44 selected by the combination calculation is measured, and one packaged product is based on the fact that this measured time has reached a predetermined time. By determining that the production of 83 is completed, it can be recognized that the production of one packaged product 83 is completed.

  In each of the above embodiments, the combination of the weighing hoppers 44 that satisfy all of the (selection condition 1) to (selection condition 3) in the combination calculation is selected as the discharge weighing hopper. The conditions are not limited to this. For example, a combination of the weighing hoppers 44 satisfying only (selection condition 2) can be selected as the discharge weighing hopper.

  In each of the above-described embodiments, the weight of the object 81 of the main feeder 41 is measured by the first load cell 47, and the weight of the object 81 of the linear feeder 42 is measured by the second load cell 48. The sensor for measuring the weight of the object 81 is not limited to the load cell. That is, instead of at least one of the first load cell 47 and the second load cell 48, an optical sensor or an ultrasonic sensor may be employed.

  In each of the above embodiments, the combination weigher 30 having the number of weighing hoppers 44 of “10” is assumed. However, the present invention is implemented with an aspect according to the embodiment regardless of the number of weighing hoppers 44. Can do.

  In each of the above embodiments, it is assumed that the number of weighing hoppers 44 participating in one combination discharge is “4”, but the number of weighing hoppers 44 participating in one combination discharging is limited to this. However, the present invention can be implemented with an aspect according to the embodiment in any number of cases.

  In each of the above embodiments, a memory hopper that is provided on the downstream side of the weighing hopper 44 and temporarily holds the workpiece 81 discharged from the hopper 44 and is a candidate for participating in combination discharge at the time of combination calculation. Although the combination weigher 30 not provided is assumed, the present invention can be applied to a combination weigher provided with such a memory hopper in a manner similar to the above embodiment.

  In each of the above embodiments, the balance main body 40 in which the collection gate is not provided at the outlet of the collection chute 45 is assumed, but the balance main body 40 in which the collection gate is provided also has a mode according to the above embodiment. Can be applied. The scale control device 50 in this case sets the start timing of the opening operation of the collecting gate based on the reception of the discharge command signal SB from the packaging control device 22, so that the weighing object from the scale body 40 to the packaging machine body 21 is measured. The discharge timing of the object 81 is appropriately controlled. That is, the scale control device 50 selects the weighing hopper 44 that participates in the discharge of the workpiece 81 by the combination calculation, and then opens the collecting gate based on the reception of the discharge command signal SB from the packaging control device 22. Then, the weighing hopper 44 selected by the combination calculation is opened to discharge the object 81, and this is held by the collective gate until the next discharge command signal SB is received.

  In each of the above embodiments, the hopper number HN (“1” to “10”) is used as the identification information for identifying each of the plurality of weighing hoppers 44. Instead, the alphabet or symbol is identified. It can also be used as information. In short, as long as the identification information can identify each of the plurality of weighing hoppers 44, the content can be appropriately selected.

  In each of the above embodiments, the weighing system 1 including two combination scales 30 is assumed, but the number of combination scales 30 provided in the weighing system 1 is not limited to this. That is, it is possible to apply the present invention to the weighing system 1 including three or more combination scales 30 in a mode according to the above embodiment, and in that case, the effect according to the effect achieved in the embodiment is also possible. Can be played.

  DESCRIPTION OF SYMBOLS 1 ... Metering system, 10 ... Supply machine, 11 ... Supply machine main body, 12 ... Supply control apparatus, 20 ... Packaging machine, 20X ... 1st packaging machine, 20Y ... 2nd packaging machine, 21 ... Packaging machine body, 21X ... 1st DESCRIPTION OF SYMBOLS 1 packaging machine main body, 21Y ... 2nd packaging machine main body, 22 ... packaging control apparatus, 22X ... 1st packaging control apparatus, 22Y ... 2nd packaging control apparatus, 23 ... packaging operation apparatus, 23X ... 1st packaging operation apparatus, 23Y DESCRIPTION OF SYMBOLS 2nd packaging operation apparatus, 30 ... Combination weigher, 30X ... 1st combination weigher, 30Y ... 2nd combination weigher, 40 ... Balance body, 40X ... 1st balance body, 40Y ... 2nd balance body, 41 ... Main feeder, 41A ... Top cone, 41B ... Main vibrator, 42 ... Linear feeder, 42A ... Linear trough, 42B ... Linear vibrator, 43 ... Supply hopper, 43A ... Hopper body, 43B ... Supply gate, 44 ... Weighing hopper 44A ... hopper main body, 44B ... weighing gate, 45 ... collective chute, 45A ... chute main body, 45B ... collective funnel, 46 ... actuator, 47 ... first load cell, 48 ... second load cell, 50 ... balance control device, 50X ... first 1 balance control device, 50Y ... 2nd balance control device, 51 ... CPU, 52 ... ROM, 53 ... RAM, 54 ... 1st vibration control circuit, 55 ... 2nd vibration control circuit, 56 ... gate drive circuit, 57 ... 1st DESCRIPTION OF SYMBOLS 1A / D conversion circuit, 58 ... 2nd A / D conversion circuit, 60 ... Scale operation apparatus, 60X ... 1st scale operation apparatus, 60Y ... 2nd scale operation apparatus, 61 ... Operation part, 62 ... Display part, 71 ... I / O circuit, 72 ... communication circuit, 73 ... LAN, 81 ... object to be measured, 82 ... packaging material, 83 ... packaging product.

Claims (10)

A control device for a weighing system, wherein information relating to production is shared among a plurality of combination weighers. The control device of the weighing system according to claim 1,
A control device for a weighing system, wherein at least one production plan of the plurality of combination weighers is changed based on the shared information. In the control device of the weighing system according to claim 2,
The control device for a weighing system, wherein the production plan is changed based on at least one operation of the plurality of combination weighers being interrupted. In the control device of the weighing system according to claim 3,
A control device for a weighing system, characterized in that the target production volume of the combination weigher whose operation has been interrupted is changed to a target production volume at the time of interruption that is smaller than the initial target production volume. In the control device of the weighing system according to claim 4,
A control device for a weighing system, wherein a difference between the initial target production amount and the target production amount at the time of interruption is set as a target reduction amount, and the target reduction amount is allocated to a combination weigher that is continuously operated. In the control device of the weighing system according to claim 4 or 5,
Control of the weighing system, characterized in that, based on the restart of the operation of the combination weigher whose operation has been interrupted, the target production amount of the balance is changed to a restart target production amount which is larger than the target production amount at the time of suspension. apparatus. In the control device of the weighing system according to any one of claims 1 to 6,
A control apparatus for a weighing system, wherein at least one production speed of the plurality of combination weighers is changed based on the shared information. The control device of the weighing system according to claim 7,
A control apparatus for a weighing system, wherein the production speed is changed when it is predicted that production of a weighing system including the plurality of combination weighers will not be completed by an initial scheduled production end time. The control device of the weighing system according to claim 7 or 8,
When the operation of at least one of the plurality of combination weighers is interrupted, the production speed is changed so that the production of the weighing system including the plurality of combination weighers is completed by the original scheduled production end time. A control device for the weighing system. A weighing system comprising: a plurality of combination weighers that measure the amount of an object to be weighed; and the control device for the weighing system according to any one of claims 1 to 9.

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