JPS6145930A - Measuring instrument - Google Patents

Abstract

PURPOSE:To improve measuring efficiency by inputting weights from a master measuring machine which measures a specific amount and slave measuring machines which measure its deficiency to a control part, shifting the stored data on whether the weight of measured bodies in a bucket is a conditioned weight or not by the control part, and supplying only conditioned weight measured bodies to a packing machine. CONSTITUTION:Measured bodies are supplied from a master supply device A' to the master measuring machine 1 through a master pool hopper 3, and plural, e.g. five slave supply devices B' are arranged at the downstream side of the device A' to supply measured bodies to two slave measuring machines each for a device B', i.e. 10 sets in total through a slave pool hopper 4. In this case, the weight of an approximately specific amount of measured bodies for a set target weight is measured by the measuring machine 2 and its deficiency is measured by a combination among 10 measuring machines 2 to discharge measured bodies from measuring machines 2 in the best combination to a timing hopper 6. When the measuring machines 2 are in defective combination, measured bodies are neither discharged from measuring machines 2 nor supplied to the packing machine 10, and they are discarded as nonconforming articles.

Description

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

(Prior Art) A weighing device as shown in FIG. 5 has conventionally been used to package and take out dried noodles such as Soumen and Hiyamugi in predetermined weights. In the figure, about 90% of the target weight of a long object to be weighed, such as dried noodles, is supplied to the weighing hopper C by the mass supply section A, and the remainder is supplied to the weighing hopper C from the small quantity supply section B.
When the sum of both weights becomes equal to the target weight, weighing hopper C
A longer object to be weighed was sent to packaging machine d, where packaging processing was performed. However, since such a measuring device has a two-stage feeding system including a large quantity supply section and a small quantity supply section, there arises a problem that the time required for measurement becomes long and the processing capacity cannot be increased. Furthermore, in order to supply about 90% of the target weight from the mass supply section, a certain amount of objects must be taken out at the cutting section a, which requires a long alignment trough b, making the device larger.

For this reason, the current system is equipped with one master weighing machine that weighs approximately a predetermined amount of the object to be weighed relative to the set target weight, and multiple slave weighing machines that perform combined weighing to weigh the shortfall from the set target weight. A weighing device has been developed that uses a weighing machine and a sub-weighing machine to supply a weighing machine with the correct amount of material for a target weight.

(Problems with the prior art) As described above, in devices that perform combination weighing using sub-weighers, when a poor combination occurs, the sub-weighing hopper of the sub-weigher is not opened to eject the weighed object, and The drive of the bucket conveyor, which collects the weighed items discharged from the weighing machine together with the weighed items discharged from the current counting machine and transfers them to the packaging machine, is also stopped, and the weighed items are transferred to the designated sub-weighing machine. supply additionally,
The combination calculation was performed again. If the optimum combination cannot be obtained in one time, this additional supply may be necessary two or more times, resulting in a decrease in measuring efficiency. Moreover, if additional supply is carried out two or more times, the probability that overscaling will occur in the weighing machine increases, and if overscaling occurs, the operation of the weighing device will be stopped and the weighing object in the weighing hopper will be stopped. There was a problem that the metering efficiency had to be discharged manually, further reducing the measuring efficiency.

(Purpose of the Invention) The weighing device of the present invention is a weighing device that uses a current counting planting machine and a plurality of slave weighing machines that perform combined weighing, and is capable of handling a case where a combination failure occurs in the slave weighing machine.

The bucket is moved one pitch without discharging the weighing material from the slave weighing machine or supplying any additional material, and as a result, the bucket containing only the weighing material discharged from the current planting machine is transferred to the packaging machine. The purpose of this is to improve the weighing efficiency without stopping the operation of the weighing device by preventing objects to be weighed from being thrown into the weighing device.

(Summary of the Invention) The weighing device of the present invention includes a weighing device that weighs a predetermined amount of material to be weighed based on a set target weight, and a plurality of weighing machines that perform combined weighing to weigh the shortfall from the set target weight. It is equipped with a weighing machine and a calculation control unit into which the weights from the current counting transplanter and the slave weighing machine are input, and the weighing object weighed by the current counting transplanter and the slave weighing machine is stored in a bucket and transferred, This is a weighing device that supplies the correct amount of weighed items to the packaging machine based on the set target weight using a sorting hopper, and if a mismatch occurs in the sub-weighing machine, the discharging of the weighed items from the sub-weighing machine is stopped. A flag indicating whether the object to be weighed stored in the bucket is correct or defective is stored in the correct quantity/defective flag memory built into the arithmetic control unit. The distribution hopper is controlled by the arithmetic control unit to eliminate defective weighed items from being supplied to the packaging machine, and to ensure that only the correct amount of weighed items are supplied to the packaging machine. It is something.

(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 the figure, the parent supply device A' has a parent shutter Aα and a parent shutter Aβ, moves up and down in the direction of the arrow, and supplies the long object to be weighed to the parent pool hopper 3. Then, either the gate 3a or 3b of this parent pool hopper 3 is opened, and the parent weighing hopper l
A long object to be measured is supplied to either a or lb. As will be described later, this parent shutter Aα can also be moved in the horizontal direction of the arrow in order to change the shutter width. The weighing machine 1 is composed of one main weighing hopper and one weight sensor (not shown), and the weighing machine 1 has a weighing hopper 1a, and the weighing machine 1 has a main weighing hopper lb. Or mb is discharged into a bucket 7 and transported by a bucket conveyor 8. Five child feeding devices B' are arranged downstream of the parent feeding device A' in the direction of arrow movement of the bucket conveyor. Each child feeding device B' has secondary shutters α and β that move up and down, and supplies a long object to be weighed to the secondary pool hopper 4. Child Pool Hopper 4 is a game) 4
A or 4b is opened and the object to be weighed is supplied to a sub-weighing machine 2 consisting of one sub-weighing hopper 5 and one weight sensor (not shown). The current counting machine 1 detects the weight of the object to be weighed, which is supplied in a predetermined amount relative to the set target weight, and the shortfall from the set target weight is weighed in combination by 10 sub-weighers 2 to find the optimum weight. Secondary weighing hopper 5 of combined secondary weighing machine
The object to be weighed is discharged to the timing hopper 6, and when the object to be weighed, for example, the object to be weighed ma, which has been weighed by the counting planter l and discharged to the bucket 7, is transferred to the position of the timing hopper 6, the object to be weighed is discharged to the timing hopper 6. is opened to discharge the weighed items from the weighing machine 2 into the bucket 7. The objects to be weighed are further transferred to the sorting hopper 9 by the bucket conveyor 8, and when the objects to be weighed in the bucket 7 are the correct amount for the set target weight, the correct amount gate 9a is opened and the objects are fed to the packaging machine IO. ,
A predetermined packaging process is performed. When the object is defective, the defective gate 9b is opened and the object to be weighed in the bucket 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. For example, a signal from an arithmetic control section 16 composed of a microcomputer or the like activates the parent shutter drive section 11 that drives the parent shutters Aβ and Aα, and the object to be weighed is supplied to the parent pool hopper 3. Next, the group gate drive section 3' is energized by a signal from the arithmetic control section 16, and either one of the gates 3a and 3b of the parent pool hopper 3 is opened to supply the object to be weighed to the parent weighing hopper. When the object to be weighed is weighed and a timing signal from the packaging machine 10 is sent to the arithmetic control unit 16, the weight from the counting machine 1 is transferred to the multiplexer 1.
4. The signal is input to the arithmetic control unit 16 through the A/D converter 15 and stored in a predetermined area of the memory. Further, a switching signal is output from the arithmetic control section 16 to the multiplexer 14, and the weights from the slave 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 stored in a predetermined area of the memory. be remembered. Arithmetic control unit 1
In step 6, a combined target weight of the slave weighing machine 2 is calculated using the set target weight set in the target weight setting unit 18 and the weight from the current counting machine 1, and the combination calculation is executed using the weight from the slave weighing machine 2. do. 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. There are 5
Set g. The -L limit weight deviation is input in advance to the arithmetic control section 16 from the upper limit weight setting section 17, and when the combination weight is equal to or greater than the combination target weight, the deviation from this target weight is within the upper limit weight deviation and reaches the combination target weight. A set of combinations that are equal or closest to this are selected as positive combinations.

When selecting the correct combination at this time, in the previous weighing, the two four-quantity machines 2, which form a pair where the weighing material is supplied from the same child pool hopper 4, were both selected as the positive combination. If there is a slave weighing machine in the pair, exclude it from the combination calculation, and also in the remaining slave weighing machines, make sure that the two slave weighing machines 2 in the pair do not participate in the combination. In other words, there is no duplication. In addition, in the previous weighing, if there is no slave weighing machine for which both of the two slave weighing machines 2 in a pair were selected as a positive weight combination, in the current combination calculation, each pair of slave weighing machines 2 will be Two slave weighing machines 2
and 1, both of which do not participate in combinatorial operations.
Only two sub-weighing machines in a pair participate in the combination calculation, forming an l-pair double. This is because the zero point adjustment is performed on one of the secondary weighing machines for double discharge, so that the zero point adjustment can be performed on the average of all the Kaneko weighing machines, rather than being concentrated only on a specific weighing machine.

When a correct quantity combination is determined, the weighing machine 2 selected for that combination discharges the weighing material, puts it into the timing hopper 6, weighs it with the counting machine, and transfers it to the bucket conveyor 8.
The arithmetic control unit 16 determines that the position of the bucket 7 that has been transferred has reached the bottom of the timing hopper 6, sends a signal to the timing hopper drive unit 6', and transfers the weighed object from the timing hopper 6 to the bucket 7. to be discharged.

The objects to be weighed in the bucket 7 are put into the sorting hopper 9, and if the objects to be weighed in the bucket 7 are the correct amount, a signal to open the correct amount gate 9a is sent from the calculation 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 weighing gate 9a are subjected to predetermined packaging processing by the packaging machine 10, and the objects to be weighed discharged from the defective gate 9b are returned to the parent weighing and feeding device A' or the child feeding device B'. Note that the conveyor drive section 8' intermittently transports the bucket conveyor 8 at a predetermined speed in response to a signal from the calculation control section 16. The shutter width change drive unit 13 is activated by a command from the calculation control unit 16 when changing the width of the parent shutter or 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 weight from the current counting transplanter l, and the parent weighing hopper la or lb.
Area PM that stores the weight of the weighing object to be discharged this time from
I and 2M2 for storing the weight of the weighed object discharged last time are provided. FIG. 3 (b) shows a correct/incorrect flag memory FM that stores whether a correct amount of combination is obtained for the target weight of the combination or whether the combination is defective by the combination calculation by the slave weighing machine 2. timing hopper 6
Area F that stores the correct amount and defective amount of weighed items discharged from
M1, and an area FM2 for storing whether the objects to be weighed in each bucket 7 transferred by the bucket conveyor 8- are correct or defective. FM5 . . . and an area FMm for storing the correct amount and defective amount of the object to be weighed that is put into the weighter 9. 3(c) and 3(d) show the counter memory for the number of discharges from the slave weighing machine 2, and FIG.
) is the parent measurement 4! ! 1 supply amount change flag, which will be described in detail later.

FIG. 4 is a flowchart of the weighing cycle of the weighing device of the present invention. Next, the operation of the present invention will be explained using this flowchart.

(1) When it is confirmed that there is a timing signal from the packaging machine IO (step P1), the parent weight memory PM is shifted by one (step P2). For example, in the previous weighing, when the weighing object was discharged from the parent weighing hopper la, if its weight was stored in the area of memory PM, then the weight is stored in the area of 2M2 from the area of memory PM. Means to shift its memorized weight.

Next, the weight of the parent weighing machine Ia, 1 which has not discharged the previous time, in the above example, the parent weighing machine Ia, l which has the current total weight b is inputted and stored in the area of the memory PMl (step P5).

(2) Next, the weights from each slave weighing machine 2 are sequentially input and stored in a memory area (not shown) (step P4
). The arithmetic control unit 16 determines the combined target weight of the slave weighing device 2 from the set target weight set by the target weight setting unit 18.
It is calculated by subtracting the weight stored in the parent weighing memory PM2, that is, the weight discharged from the previous counting machine l (step P
5). Next, it is checked whether or not there was a duplicate discharge in the previous time, that is, whether objects to be weighed were discharged from both of the paired slave weighing machines 2 of the slave weighing machines (step P6).

If there is no duplicate discharge from the previous time, in all early weighings, two weighing machines 2 in each pair will not both participate in the combination calculation, and there will be no duplication, and only one pair of slave weighing machines 2 will both participate in the combination calculation. A combination calculation is performed for one pair of duplicates, and a combination (correct amount combination) that is equal to or closest to the combination target weight is found that is equal to or greater than the combination target weight and within the upper limit weight deviation (step P7). If there was double discharge last time, calculate the combination without double on slave weighing machines 2 other than the pair with double discharge last time, and calculate the one pair that is equal to or closest to the combined target weight within the upper limit weight deviation and more than the combined target weight. (step 2nd day). Next, check whether the current salary change flag is 1°H (
Step P9): At this stage, the current amount of income has not been changed yet, so the process proceeds to step PJO, and it is checked whether a positive amount combination has been obtained (step Pro).

If it cannot be determined, that is, if the combination is defective, the process moves to step P23, which will be described later.

(3) When the positive quantity combination is determined, the number of selected slave weighing machines 2 is added to and stored in the cumulative memory DM (step P11). Subsequently, the discharge number counter memory C1 is incremented by 1 (step P12). Next, it is checked whether the value of the counter C1 has reached a predetermined number of times, for example, six times (step P1g), and the process described below can be repeated until the predetermined number of times is reached. When the value of counter C1 reaches a predetermined number, the next calculation is performed (step P+
4), that is, DM/, which is the value of the cumulative number of discharger weighing machines DM divided by the count number of the counter memory CI.
It is determined whether the value of C1 is within a predetermined range, for example, 3.2 to 3.8. Here, the reason why the value of DM/C is selected to be 3.2 to 3.8 is that, for example, when there are 10 slave weighing machines 2 and a combination calculation is performed with no overlap and 1 pair overlap, discharge is possible. This is because it is known from experience that the maximum number of devices is 5 to 6, and that the best combination accuracy is when 3 to 4 devices, which is approximately 1/2 of that number, are ejected. Therefore, in step PI4, the average number of discharge (selected) weighing machines for a predetermined number of times, for example, six times, is 3.2 to 3.
This means checking whether it is within the range of 8 units. If the value of DM/C is within the range of 3.2 to 3.8, the counter C1 and cumulative memory DM are cleared to zero (step PI5), and the process proceeds to the beginning. If the value of DM/C is less than 3°2, the average number of slave weighing machines 2 selected is small, so it is the parent scale of the current feeding device A'.

A signal for narrowing the width is output to the shutter width changing drive unit 13 (step PI 7), and the distance between the parent shutters Aα and Aβ is narrowed by l pitch to reduce the supply amount and increase the number of selected slave weighing machines 2. In this way, the world salary change flag BM is r
HJ and clear the discharge number counter memory C2 to zero. Here, the discharge counter memory C2 is a memory for counting the number of discharges until the weighed object in the parent pool hopper or the parent weighing hopper in front of the shutter width change is discharged. If the value of DM/C is 3.8 or more, output a signal to widen the parent shutter width (step P16), set the change flag BM to rHJ, and clear the counter C2 to zero (step P16).
Step P] day). (4) In step P9, the change flag BM is rHJ, that is, step PI
When it is confirmed that the process in step 8 has been completed, the value of the counter memory C2 is incremented by 1 in step PI9).
It is checked whether the counter memory C2 has reached 3 (step P20). This means that until the objects to be weighed in the parent pool hopper, parent weighing hopper la, and lb that have already been supplied and loaded with the shutter width before the change are completely discharged (that is, up to 3 times of weighing), the cumulative memory DM is stored. This is to avoid addition and memorization. When the value of the counter memory C2 reaches 3, the counter C1 and cumulative memory DM are cleared to zero (step P21), and the change flag BM is set to rLJ (step P22).

(5) In the weighing process, first check whether there is double discharge from the previous time (step P25), and if there is double discharge from the previous time, send it to the slave weighing machine 2 on the non-feeding side of the pair (in one weighing cycle, Of the two secondary weighing machines with double discharge, the object to be weighed is only put into the weighing hopper of one of the secondary weighing machines 2, and the weighing hopper of the other secondary weighing machine 2 is empty.) Zero point adjustment (Step P24). next,
Shift the entire correct/incorrect flag memory FM by one step P25), and transfer the correct/incorrect result of the combination operation to the memory area F.
M, (step P26). That is, if the combination is correct, "H" is stored in the memory area FM, and if the combination is defective, rLJ is stored in the memory area FM.

Next, it is determined whether the flag memory FMm is "H", that is, whether the object to be weighed in the sorting hopper is correct or defective (step P27). If FMm is rHJ, the correct amount gate of the sorting hopper is checked. Please output the open signal (step 7712), FMm
If it is not rHJ, output the defective gate open signal of the sorting hopper (step P29). (6) Next, output the timing hopper open signal.
), output the master weighing hopper open signal of the current planting machine l that was memorized in step P5 (*I) (step P
g t ), and discharge the weighed items into each bucket 7. Next, an operation signal for the parent shutter Aβ is output (step P
32) Operate the parent shutter Aβ down to L and release the shutter 2A.
The object to be measured is supplied between β and Aα, and it is checked whether the flag memory FM is rHJ (step P33). F
If M is "L", it means that the combination is defective, and in this case, the early weighing hopper is not opened, and the bucket 7 containing only the weighing material discharged from the current counting planter is moved to the compare drive unit 8.
’ every time a shift signal is input to the sorting hopper 9.
will be transferred to. When FM□ is "H", a correct amount combination has been obtained, so a sub-weighing hopper open signal is outputted according to the correct amount combination (step Pg4), and the object to be weighed is discharged from the sub-weighing hopper to the timing hopper. Next, step Pg5 outputs an opening signal for the gate 3a or 3b of the parent pool hopper on the side corresponding to the new planting machine 1 that has discharged the weighed object.
), parent pool hopper 3 to parent weighing hopper 1a or 1b
Insert the object to be weighed. Next, move bucket conveyor 8 to 1.
Output a signal to shift (step Px6), output a signal to open the gate 4a or gate 4b of the child pool hopper 4 on the side corresponding to the quick weighing pump that discharged the weighed object (step P57), Load the object to be weighed into the secondary weighing hopper. Furthermore, an operation signal for the child shutter β of the child feeder B' corresponding to the child pool hopper with the open gate is outputted (777723), and the child shutter β is moved up and down to place the object to be weighed between the shutters β and α. is supplied, and an operation signal for the child shutter α corresponding to the operated child shutter β is outputted (step P59). supply things. Finally, an operation signal for the parent shutter Aα is output, and the object to be weighed between the parent shutters Aβ and Aα is supplied from the current feeding device A' to the parent pool hopper 3. Step P4
θ), return to A.

If a combination failure occurs, the items to be weighed in each slave weighing machine 2 are left as they are and the next combination weighing is performed.

That is, steps P1 to P4 are executed, a new combined target weight is calculated in step P5, and a combined calculation is performed on this new combined target weight using each child weighing machine 2 that still contains the previous weighing object. .

(Effects of the Invention) As explained above, in the present invention, a new typesetting machine,
In a weighing device that uses multiple sub-weighers for combined weighing, if an incorrect combination occurs in the sub-weighers, the correct/incorrect flag that stores the correct and incorrect combinations of the sub-weighers is set to is shifted according to the movement of the bucket in which it is stored, and prohibits the discharge of the weighed items from the secondary weighing machine, and does not supply the R1 vinegared vinegar in the bucket containing only the weighed items discharged from the current weighing machine to the packaging machine. Since the weighing device is continuously operated without stopping, the weighing efficiency can be improved.

[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 invention, Fig. 3 is an explanatory diagram of the memory, Fig. 4 is a flowchart, and Fig. 5 is a layout diagram of a conventional example. . l... Newly revised planting machine, 2... Child weighing machine, 3... Main pool hopper, 3'... Main gate drive section, 4... Child pool hopper, 4'... Child gate Drive unit, 5... Child weighing hopper, 6... Timing hopper, 6'... Timing hopper drive unit, 7... Bucket, 8... Bucket conveyor, 8'... Conveyor drive unit, 9...
Sorting hopper, 9'... Sorting hopper drive unit, lO...
Packaging machine, 11... Parent jitter drive section, 12... Child shutter drive section, 13... Shutter width changing drive section, 14.
...Multiplexer, 15...A/D converter, 16.
... Arithmetic control section, 17... Upper limit weight setting section, 18...
-Target weight setting section. Patent Applicant: Ishida Koki Seisakusho Co., Ltd. Representative: Patent Attorney: Minoru Tsuji (1 other person) I4 Figure 3

Claims (1)

[Claims] A master weighing machine that weighs almost a predetermined amount of the object to be weighed against the set target weight, multiple slave weighing machines that perform combined weighing to weigh the shortfall from the set target weight, and a Equipped with an arithmetic control unit into which the weight is input, the object to be weighed by the master weighing machine and the slave weighing machine is stored in a bucket and transferred to the packaging machine, and the object to be weighed stored in the bucket is confirmed to be the correct amount. A weighing device characterized by supplying only a positive 1 weighed object to a packaging machine with respect to a set target weight by shifting the memory of whether it is present or defective by a calculation control unit according to the transfer of the bucket. .