JPS6242017A - Measuring instrument - Google Patents

Abstract

PURPOSE:To execute the highly accurate measurement rapidly by providing the control means to adjust automatically the shutter width of shutters provided at the upstream side and the downstream of the measured substance supplying device in accordance with the size of the setting target weight. CONSTITUTION:A master shutter driving part 11 to drive master shutters alphaa, alphab and betaa, betab by the signal from an arithmetic control part 16 composed of the microcomputer, etc., is energized, and the measured substance is supplied to master pool hoppers 3a and 3b. Continuously, by the signal from the control part 16, a master gate driving part 3' is energized, either of the pool hoppers 3a and 3b is opened, the measured substance is supplied and measured to a master measuring hopper, the weight from a master measuring instrument 1 is inputted through a multiplexer 14 and an A/D converter 15 to the arithmetic control part 16 and stored into the memory. Next, the weight from a slave measuring instrument 2 is also stored into the memory by the same channel as the above-mentioned. The arithmetic control part 16 calculates the assembling target weight of the slave measuring instrument 2 by the weight by the setting target weight set by a target weight setting part 18 and the weight from the master measuring instrument 1, and executes the assembling calculating by the weight from the slave measuring instrument 2.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a weighing device for weighing a long weighing object such as, for example, dried noodles.

(Prior art) In order to package and take out dried noodles such as soumen and hiyamugi in predetermined units, conventionally there is a main weighing machine that supplies about 9'I3 of the target quantity, and a sub-weigher that supplies the remainder. A weighing device equipped with a weighing machine was used.

In this case, multiple slave weighing machines are arranged, and the weights obtained by the slave weighing machines are combined and calculated to supply the shortfall in the 11 standard weights obtained by the master weighing machine, resulting in a highly accurate weighing machine. The device is configured to perform weighing.

(Problems to be Solved by the Invention) By the way, in the conventional weighing device as described above, a parent feeding device and a child button device that supply a long object to be weighed to the pool hoppers of the current nine weighing machines and the slave weighing machines are used. In addition, shutters are arranged on the upstream side and the downstream side with respect to the supply direction of the object to be weighed, and the supply and stop of the object to be weighed to the pool hopper are controlled by opening and closing the shutters.

The shutter width on the parent feeding device side was automatically adjusted according to the target set weight of the object to be weighed, but the shutter width on the child feeding device side was manually adjusted, which took time to adjust. There was a problem in that the measurement accuracy was not sufficient due to adjustment errors.

Therefore, the present invention attempts to solve the problems of the prior art.

(Means for Solving the Problem) The present invention uses one or more machines that weigh almost a predetermined amount of objects to be weighed relative to a set target weight, and performs a combination weighing to determine if there is a shortage of the set target weight. Either use multiple slave weighing machines that weigh the set target weight in combination, or if the set target weight is small, perform combined weighing and use only the multiple slave weighing machines that weigh the set target weight. A pair of shutters are provided on the upstream and downstream sides of the weighing object supply device for the 9 weighers and slave weighing machines, and each of the above shutters is installed according to the size of the set target weight. A control means for automatically adjusting the shutter width of
Automatically adjusts the shutter width of each shutter provided for the weighing machine and slave weighing machine, and automatically adjusts the shutter width of each shutter provided for the slave weighing machine when the set target weight is small. By providing a metering device equipped with a control means, the above-mentioned problems of conventional devices are solved.

(Function) The present invention automatically adjusts the shutter width of the parent shutter and child shutter provided in the parent supply device and child button device, or the shutter width of only the child shutter provided in the child button device, depending on the size of the set target weight. Adjust accordingly. Therefore, quick and accurate weighing can be performed.

(Example) Hereinafter, an example of the present invention will be described using the drawings.

FIG. 1 is a schematic layout diagram of the present invention. In FIG. 0, the parent supply device A' includes parent shutters αa, αb and parent shutter β.
a and βb, and moves up and down in the direction of the arrow to supply long objects to be weighed to the parent pool hoppers 3a and 3b. For example, when a total of nine machines are used alternately, either the gates 3t, 32 of the parent pool hoppers 3a, 3b are opened, and the long weighing machine is placed in either the coarse weighing hoppers la, lb. supply things. These parent shutters αa, αb and βa, βb
As will be described later, in order to change the shutter width, it can also be moved in the horizontal direction of the arrow.

The total 9 machines 1 are composed of one rough weighing hopper and one weight sensor (not shown), etc., and the total 9 machines 1 have a rough weighing hopper la, and the current 9 machines ff1 have a current weighing hot and ri 1b.
The object ma or mb weighed by the machine 1 is discharged into a packet 7 and transported by a packet conveyor 8. For example, five child button devices B' are arranged downstream of the parent supply device A' in the direction of arrow movement of the packet conveyor. Each child button device B' has child shutters α and β that move up and down, and supplies a long object to be weighed to the child pool hopper 4. The child pool hopper 4 opens the gate 4a or 4b and supplies the object to be weighed to a submeter i*2 consisting of one child weighing hopper 5 and one weight sensor (not shown).
When using alternately, one of the coarse weighing fits detects the weight of the object to be weighed that is supplied by a predetermined amount relative to the set target weight, and the shortfall from the set target weight is, for example, 1.
Combination weighing is performed using 0 sub-weighing machines 2, and the objects to be weighed are discharged from the sub-weighing hoppers 5 of the sub-weighing machines of the optimal combination to the timing hopper 6. When the discharged weighing object, for example, the weighing object ma, has been transferred to the bottom of the timing hopper 6, the timing hopper 6 is opened and the weighing object from the child weighing v12 is discharged into the packet 7. The object to be weighed is further transferred to the sorting hopper 9 by the bucket/conveyor 8, and when the object to be weighed in the packet 7 is positive with respect to the set target weight, the picker 9a is opened and transferred to the packaging machine 10. It is supplied and subjected to predetermined packaging processing. When it is defective, the defective gate 9b is opened and the weighed object in the packet is rejected as a defective item.

FIG. 2 is a schematic block diagram of the present invention.

Next, this block diagram will be explained with reference to FIG.
The parent shutter drive unit 11 that drives a and βb is energized,
The objects to be weighed are supplied to parent pool hoppers 3a and 3b. &
i! The parent gate drive unit 3 receives a signal from the calculation control unit 16.
' is energized and, for example, when the current weighing @1 is used alternately, one of the parent pool hoppers 3a and 3b is opened and the current weighing and the object to be weighed are supplied to the hopper, and the object to be weighed is then weighed. When the timing signal from the packaging 41310 is sent to the calculation control unit 16, the weights from the nine machines are inputted to the calculation control unit 16 through the multiplexer 14 and the A/D converter 15, and are stored in a predetermined location in the memory. Stored in area. Further, a switching signal is output from the arithmetic control section 16 to the multiplexer 14, and the weights from the sub-weighing machine 2 are sequentially taken out from the multiplexer 14, inputted to the arithmetic control section 16 through the A/D converter 15, and placed in a predetermined area of the memory. be remembered. The arithmetic control unit 16 calculates a combined target weight for the slave weighing machine 2 using the set target weight set by the target weight setting unit 18 and the weight from the current weighing Jal, and performs the combined calculation using the weight of the slave weighing machine 2. Execute. Note that the upper limit weight setting section 17 is preset with a deviation of the upper limit weight from the set target weight. For example, if the set target weight is 500 g and you want to set the upper limit weight to 505 g, the upper limit weight setting section 17 is set with that deviation. The upper limit weight μ deviation is input in advance from the upper limit weight setting unit 17 to the arithmetic control unit 16, and when one combination weight is equal to or higher than the combination target weight, the deviation from this target type μ is the upper limit. A combination that is equal to or closest to the target combination weight within the weight deviation is selected as a correct combination. When selecting the positive weight combination at this time, in the previous weighing, two slave weighing machines 2 that were a pair and were supplied with the weighing material from the same child pool hopper 4 were both selected as the positive weight combination. In this case, exclude this paired slave weighing machine from the combination calculation, and also make sure that both of the remaining slave weighing machines 2 in the pair do not participate in the combination calculation. That is,
We make sure that there are no duplicates. In addition, in the previous weighing, if there is no slave weighing machine for which both of the two slave scales ff1Ja2 in a pair were selected as a positive weight combination, in the current combination calculation, the Kaneko weighing machine will The two slave weighing machines 2 are arranged so that there is no duplication in which both do not participate in the combination calculation, and the two slave weighing machines 2 in a pair are arranged so that there is no duplication in which only two slave weighing machines 2 in a pair participate together in the combination calculation. There is. This executes zero point adjustment for one slave weighing machine for double discharge, so the zero point IIM
This is to make it possible to perform the calculation on average for all Kaneko weighing machines, without biasing only to a specific weighing machine. When a correct amount combination is determined, the items to be weighed are discharged from the slave weighing machines 2 selected for that combination and put into the timing hopper 6, and then weighed by a total of nine weighing machines and transported by the packet conveyor 8. The arithmetic control section 16 determines that the position of the packet 7 has reached the bottom of the timing hopper 6, sends a signal to the timing hopper drive section 6', and the timing hopper 6 discharges the object to be weighed into the packet 7.

The objects to be weighed in the packet 7 are put into the sorting hopper 9, and if the objects to be weighed in the packet 7 are the correct amount, a signal to open the correct amount gate 9a is sent from the arithmetic control section 16 to the sorting hopper drive section 9'. If it is defective, a signal to open the defective gate 9b is sent from the arithmetic control section 16 to the sorting hopper drive section 9'. The objects to be weighed discharged from the correct amount gate 9a are subjected to predetermined packaging processing by the packaging machine IO, and the objects to be weighed discharged from the defective gate 9b are returned to the parent feeding device or to the child feeding bag M.
Measures will be taken, such as returning it to B'.

Note that the conveyor drive section 8' intermittently transports the packet conveyor 8 at a predetermined speed based on a signal from the arithmetic control section 16. The main shutter width change drive unit 13 and the child shutter width change drive unit 19 are activated by a command from the calculation control unit 16 when changing the width of the parent shutter or the child shutter.

FIG. 3 is an explanatory diagram of an overview of the memory within the arithmetic control section 16. Figure 3 (a) shows the parent weight memory PM that stores the weights from a total of nine machines 1, and the weight from the current weighing hopper la or 1b.
Area PM that stores the weight of the weighing object to be discharged this time from
A PM2 is provided for storing the weight of the weighed object I and the weight of the weighed object discharged last time. Figure 3 (b) shows a correct/incorrect flag memory FM that stores whether a correct amount of combination has been found for one combination target weight or whether the combination is defective by the combination calculation by a total of 9 machines 2. Area FM that stores the correct amount and defective amount of weighed items discharged from hopper 6
I, and an area FM2.I for storing whether the weighed object in each packet 7 transferred by the packet conveyor 8 is correct or defective. FM5 . . . and an area FMm for storing the correct amount and defective amount of objects to be weighed to be sorted into the hopper 9. Figures 3 (C) and (D) are the counter memory for the number of discharges from 9 machines 2 in total, and 3 @ (E) is the cumulative memory for the total number of 9 machines discharged from 9 machines 2 in total, Figure 3 (to)
is the supply amount change flag for a total of 9 aircraft.

FIG. 4 is a flowchart showing the processing procedure for automatically adjusting the shutter widths of the parent shutter and child shutter.
Next, this flowchart will be explained. Here, the set target weight W7 is (a) W7<100. og (B) 100.0≦W≦150.0g (C) W7>1
The case where it is set as 50.0g will be explained.

(a) W engineering <100. In the case of Og, in this case, only a total of 9 shutters are used and a total of 9 shutters are not used, so only the child shutters are adjusted.

(1) Check the automatic shutter width adjustment set key (not shown) is turned on (step Px), place all the child shutters at the test weighing position, lower the child shutter β, then raise it and set the child shutter Supply the object to be measured between (step P
2) Next, lower the secondary shutter α to place the object to be weighed into the secondary pool hopper, open the gate 4a of the secondary pool hopper 4, input the object to be weighed into the quick weighing hopper 5, and then lower the secondary shutter α again.
, β, and further open the gate 4b of the child pool hopper 4 to load the weighing object into the quick weighing hopper 5. Step P3
), From the weighing data of the Kaneko weighing machines that participated in the weighing at this time, calculate the average weight for each of the 9 machines (step P4), and then calculate the average weight of each of the 9 machines at 1/3 of the set target weight WT. The child shutter width is calculated so that the weight per unit is the same (step P5).

(2) If the calculated result exceeds the maximum value of the child shutter width (step P6), set the child shutter width to the maximum value (step P7), and if the calculated result is smaller than the minimum value (Step Ps), the child shutter width is set to the minimum value (Step P9).

Next, move and adjust the child shutter to the set child shutter width (step Pt o ) m (b) 100.0
In the case of ≦W≦150.0g In this case, 1. Normally, all the preliminary shutters ff14*2 and the current meter a1 are used one by one alternately, so the parent shutter and child shutter are adjusted.

(1) Check whether the set key for automatic shutter width adjustment is turned on (Step Pso), and check whether the control mode is Mode I or IT (Step P5t).
When the control mode is set, the child shutter width is moved and fixed to a position corresponding to the value input using a numeric keypad (not shown). Therefore, the child shutter width is not adjusted, while the parent shutter width is moved to a constant width position (step P52), and each shutter and each pool hopper are operated to transfer the weighing to all the current weighing hoppers and early weighing hoppers. Loading objects (step PSE) 11 Here, the average weight T p w of the nine machines is calculated.

(2) The weight Tp to be measured with the weighing machine is T p = WT
- (3/10) P 55) *μchi, T p > T p
If w, the shutter width is widened, and if TF<Tpw, the shutter width is narrowed.

(3) When control mode II is set, use the numeric keypad to set the weight to be weighed using the 9 weighing machine.

Therefore, the shutter width is controlled so that the weight of each nine aircraft becomes this weight at the average time.

In the process of step P51, when the δ setting of mode II is determined, the child shutter width and the group shutter width are moved to a constant width (step P5s). The objects to be weighed are loaded into all current weighing hoppers and early weighing hoppers, and the average weight Tpw of the nine weighing machines is calculated (step P57).

(4) Weigh with quick fi41 entered using the numeric keypad! ! ffi ft T c and T c w =
According to the value of (3/10)X (total weight of 9 aircraft),
Determine the child shutter width and move the child shutter (Step Ps8) Next, weigh with a total of 9 machines, g weight TP
=(WT-Tc) and the average weight T p w of the current nine aircraft, the family shutter width is calculated and the five parent shutters are moved (step Pss).

(c) When WT>150.0g In this case, the basic processing is too, o≦W≦15
The process is the same as in the case of 0.0g. However, step P
55 and step P5? -1? The difference is that the obtained value of Tpw is the sum of the weights of the nine aircraft in total. This is because, in this case, the target weight WT is set as the sum of the weights of the two current 9 aircraft
Subtract that value and use that value as the target weight for the combination, which is a total of 9
This is because machine 2 performs combinational calculations.

(Effects of the Invention) As explained above, in the present invention, one or more weighing machines weighing almost a predetermined amount of the object to be weighed are used, and a total of nine weighing machines are used to weigh a predetermined amount of objects to be weighed based on the set target weight. Either use multiple weighing machines with a total of 9 weighing machines, or if the set target weight is small, perform a combination weighing and use only the multiple weighing machines that weigh the set target weight with a total of 9 weighing machines, depending on the size of the set target weight. Since the family shutter width and the sub-shutter width, or only the sub-shutter width are automatically adjusted in accordance with the measurement, it is possible to carry out quick and accurate measurement.

[Brief explanation of the drawing]

FIG. 1 is a schematic layout diagram of the present invention, FIG. 2 is a schematic block diagram of the present invention, FIG. 3 is an explanatory diagram of a memory, and FIG. 4 is a flow chart. 1... 9 aircraft in total, 2... 9 aircraft in total, 3a, 3b...
・Group pool hopper, 3'...Group gate drive unit, 4...
- Child pool hopper, 4'... Child gate drive section, 5...
・Quick weighing hopper, 6...Timing hopper, 6'...
・Timing hopper drive unit, 7...Packet, 8...
・Packet conveyor, 8'...Conveyor drive unit, 9・
... Sorting hopper α '38. 11... Shutter drive section, 12... Child shutter drive section, 13... Main shutter width changing drive section, 14... Multiplexer , 15
... A/D converter, 16... Arithmetic control unit, 17...
- Upper limit weight setting section, 18...Target weight setting section, 19.
・・Subshaft 7-tare change drive unit.

Claims (3)

[Claims] (1) One or more master weighing machines that weigh approximately a predetermined amount of objects relative to the set target weight, and multiple slave weighing machines that perform combined weighing to weigh the shortfall from the set target weight. or, if the set target weight is small, perform combined weighing and use only multiple slave weighing machines that weigh the set target weight, and adjust the weighing material supply device to each master weighing machine and slave weighing machine. A control means for automatically adjusting the shutter width of each shutter according to the size of a set target weight, in a device provided with a pair of shutters on the upstream side and the downstream side that supply and stop the object to be weighed by moving up and down. A measuring device characterized by being provided with. (2) When the set target weight is large, the control means:
The weighing device according to claim 1, characterized in that the shutter width of each shutter provided for the master weighing machine and the slave weighing machine is automatically adjusted. (3) When the set target weight is small, the control means:
Claim No. 1, characterized in that the shutter width of each shutter provided for the slave weighing machine is automatically adjusted.
The measuring device described in item 1).