JPH0122887B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a combination scale that automatically puts solid items such as processed foods and confectionery into bags or the like in fixed weight portions. Conventional combination scales use weight detectors installed in each weighing tank to obtain weighing signals corresponding to the weight of objects to be weighed stored in multiple weighing tanks, and then combine these signals in various ways to obtain the combined weighing signal. Selecting a combination where the sum is approximately equal to a predetermined weight, discharging the article to be weighed from the weighing tank related to that combination,
There were things to pack in bags etc. In order to increase the accuracy of combinations in such combination scales, the number of combinations that can be obtained must be increased, which requires increasing the number of weighing vessels equipped with weight detectors. However, the price of the weighing tank equipped with a weight detector occupies a large proportion of the price of the combination scale, and there is a problem in increasing the number of such weighing tanks. In addition, only one weighing tank equipped with a weight detector is provided, and after weighing with this weighing tank, the items to be weighed are transferred to multiple auxiliary tanks, and at the same time, the weighing signal is sent to the memory corresponding to each auxiliary tank. There is also a device that performs the combination after storing the information. Although this device solves the above-mentioned cost problem, it takes longer to transfer to each auxiliary tank than it takes to perform the combination, and the entire device is There was a problem that the operating time of the system was getting longer. The purpose of this invention is to provide a combination scale with high combination accuracy, short operating time, and low cost.For this purpose, a plurality of weighing tanks are provided, and an auxiliary tank is provided for each of these weighing tanks. The weighed article is transferred to the auxiliary tank, and its weighing signal is stored in the auxiliary tank memory, and the empty weighing tank is newly supplied with the weighed article, and the weighing signal and the auxiliary tank memory are stored. The configuration is such that combinations are performed based on the stored values of . Hereinafter, the present invention will be explained in detail based on one embodiment shown in the drawings. In FIG. 1, 1 is a supply device;
Reference numeral 2 denotes a dispersion device, in which the articles to be weighed supplied from the supply device 1 to the dispersion device 2 are charged into reservoirs 5 and 6 via the input gates 3 and 4 of the dispersion device 2, and then through the discharge gates of the reservoirs 5 and 6. 7, 8 to the measuring tank 9,
10, where it is weighed by load cells 11 and 12. The articles to be weighed in the weighing tanks 9, 10 are discharged to the switching chutes 15, 16 via the discharge gates 13, 14 of the weighing tanks 9, 10, and by switching the dampers 17, 18 of the switching chutes 15, 16. It is supplied to auxiliary tanks 19, 20 or collection chute 21. The objects to be weighed in the auxiliary tanks 19 and 20 are discharged to the collection chute 21 via discharge gates 22 and 23. Note that when the discharge gates 7 and 8 of the storage tanks 5 and 6 are opened, the articles to be weighed are transferred to the weighing tanks 9 and 6.
10, a new article to be weighed is automatically introduced from the dispersion device 2 through the input gates 3 and 4, and each discharge gate 7,
8, 13, 14, 22, 23 are configured to close automatically after being opened, and the dampers 17, 18 of the switching chutes 15, 16 are normally connected to the auxiliary tank 1.
9, 20 are configured to communicate with the measuring tanks 9, 10, and when a signal is supplied, they communicate with the collection chute 21, and after a predetermined time, communicate with the auxiliary tanks 19, 20 again.
It is configured to communicate with. It is now assumed that articles to be weighed are being supplied to the weighing tanks 9 and 10 and the storage tanks 5 and 6, respectively. When a start signal is supplied in this state, the flip signal is output via OR circuits 24 and 25 as shown in FIG.
It is supplied to the set terminals of flops (hereinafter referred to as FF) 26 and 27, and the outputs of the Q terminals of F and F 26 and 27 become "1" and the output becomes "0", respectively, and gates 27 and 28 is opened and load cell 1
Weighing signals obtained by converting the outputs of 1 and 12 by weight converters 29 and 30 are stored in auxiliary tank memories 31 and 32. At the same time, the start signal is also applied to the discharge gate control circuits 33 and 34 of the measuring tank through OR circuits 33a and 34.
a, the discharge gates 13 and 14 are opened, and the articles to be weighed in the weighing tanks 9 and 10 are discharged to the auxiliary tanks 19 and 20 via the switching chutes 15 and 16. At this time, the input detection devices 35 and 36 provided in the auxiliary tanks 19 and 20 generate an output, and this detection output is supplied to the reset terminals of F and F 26 and 27, and the Q output of F and F 26 is "0", Output is "1"
Therefore, gates 27 and 28 are closed and gates 40 and 41 are opened. Auxiliary tank input detection device 3
The detection outputs 5 and 36 are supplied to the discharge gate control circuits 42 and 43 of the storage tank via OR circuits 42a and 43a, and the discharge gates 7 and 8 are opened and the objects to be weighed are placed in the empty weighing tanks 9 and 10. will be newly supplied. The weighing signal of this newly supplied article to be weighed is passed through the open gates 40 and 41 to the selection circuit 4.
4. The selection circuit 44 is also supplied with the stored values of the auxiliary tank memories 31 and 32. A delay circuit 4 obtained by delaying a start signal when a new article to be weighed is supplied to the weighing tanks 9 and 10.
The output of 5 is provided to the combination generator 46, and the combination generator 46 starts operating. combination generator 46
In this embodiment, is composed of a four-stage binary counter, each stage corresponding to measuring tanks 9 and 10 and auxiliary tanks 19 and 20, respectively, and 15 as shown below.
Generate street combinations.

[Table] Each of these stages is connected to gates 44a, 44b, 44c, and 44d corresponding to the measuring tank 9, auxiliary tank 19, measuring tank 10, and auxiliary tank 20 of the selection circuit 44,
When the output becomes "1" based on the combination described above, the corresponding gates 44a, 44b, 44c, 4
4d is opened to supply the weighing signal to the adder 47 and the memories of the auxiliary tank memories 31 and 32. In addition, the combination generator 4 is also placed in the corresponding stage of the four-stage combination memory 48.
6 output is supplied. Therefore, the adder 47 is
15 types of added values are calculated, and these 15 types of added values are sequentially supplied to a judger 49. The judger 49 compares them with the setting value set in the setting device 50, and when all combinations are completed, the set value is determined. Alternatively, the combination closest to the set value is stored in the combination storage 48. Since the configuration of the determiner 49 is well known, detailed explanation will be omitted. When all the combinations are completed, that is, when the output of each stage of the combination generator 46 becomes "1111", the gate 51a on the output side of the combination storage 48,
51b, 51c, and 51d are opened by the output of the AND circuit 52. At this time, if the stored value of the combination storage 48 is the first combination in the above table, that is, only the stage corresponding to the measuring tank 9 is "1", the output of this stage is the same as that of the stage corresponding to the auxiliary tank 19. Since the output is "0", the gate 5 is opened by the output of the inverter 53.
4. Measuring tank discharge gate control circuit 33 and switching damper control circuit 5 via OR circuits 33a and 55a.
5, the switching damper 17 is switched so that the weighing tank 9 communicates with the collection chute 21, the discharge gate 13 is opened, and the articles to be weighed in the weighing tank 9 are discharged. Thereafter, the charging control device 56 supplies an output to the discharge gate control circuit 42 of the storage tank, the discharge gate 7 is opened, and the article to be weighed is supplied to the weighing tank 9. Also in the fourth combination in the above table, that is, when only the stage corresponding to the measuring tank 10 has an output of "1", the inverter 57, gate circuit 58, OR circuit 59a, switching damper control circuit 59, closing control device 60 Similarly controlled by . The second combination in the above table, i.e. auxiliary tank 1
When only the stage corresponding to 9 is "1", the discharge gate control circuit 61 of the auxiliary tank 19 is controlled by its output.
is activated, the discharge gate 22 is opened, and the auxiliary tank 19 is
The articles to be weighed inside are discharged to a collection chute 21. Thereafter, the discharge gate control circuit 33 of the measuring tank 9 is activated by the charging control device 56, and the discharge gate 1
3 is opened, and the articles to be weighed in the weighing tank 9 are transferred to the auxiliary tank 19. At this time, the output of the loading control device 56 is supplied via the OR circuit 24 to the set input of the F.F. The water is supplied to the dry measuring tank 9. Also in the case of the eighth combination in the above table, the input control device 60 and the auxiliary tank 2
It is similarly controlled by the discharge gate control circuit 62 of 0. In the third combination in the above table, that is, when only the stage corresponding to the measuring tank 9 and the auxiliary tank 19 has an output of "1", the discharge gate control circuit 61 of the auxiliary tank 19 operates first, and the discharge gate 22 opens. Then, the articles to be weighed in the auxiliary tank 19 are discharged into the collection chute 21. Next. The output of the delay circuit 63 which delays the output of the stage corresponding to the measuring tank 9 so as to generate an output after the discharge is completed is connected to the gate 64 which is opened by the output of the stage corresponding to the auxiliary tank 19. It is supplied to the discharge gate control circuit 33 of the weighing tank and the control circuit 55 of the switching damper through the circuits 33a and 55a, and thereafter the articles to be weighed are removed from the weighing tank 9 in the same manner as described in the case of the first combination. It is discharged to the collection chute 21. After that, the input control device 56,
By the discharge gate control circuit 33 of the weighing tank 9 and the discharge gate control circuit 42 of the storage tank 5, articles to be weighed are supplied from the storage tank 5 to the weighing tank 9, and from the weighing tank 9 to the auxiliary tank 19, and stored in the auxiliary tank memory. A weighing signal is supplied to the weighing vessel 31, and the article to be weighed is further supplied from the storage tank 5 to the weighing tank 9. Note that since the output of the inverter 53 is "0", the gate circuit 54 is closed, and the articles to be weighed are not discharged from the weighing tank 9 and the auxiliary tank 19 at the same time. In the case of the 12th combination in the table above, the delay circuit 66 and the gate circuit 6
7, etc., in the same manner as described above. When a combination other than the combinations described so far is selected, these are performed by combining the controls described so far, and detailed explanations will be omitted. These emissions,
After the input is made, the combination generator 46 is activated again and the combination is performed again. In this combination weigher, a plurality of weighing tanks 9 and 10 are provided, and auxiliary tanks 19 and 20 are attached to these tanks, respectively. The weighing signals are stored in the auxiliary tank memories 31 and 32, and the empty weighing tanks 9 and 10 are newly supplied with the article to be weighed.
The configuration is such that these measurement signals and the values stored in the auxiliary tank memories 31 and 32 are combined. Therefore, many combinations can be obtained even if the number of weighing tanks 9 and 10, which account for a large proportion of the price of the combination scale, is small, so that a combination scale that is inexpensive and has high combination accuracy can be obtained. Moreover, since the auxiliary tanks 19 and 20 are attached to the measuring tanks 9 and 10, respectively,
The time required for transfer is shorter than the conventional system in which one measuring tank is used to transfer data to multiple auxiliary tanks, and the operating time can be shortened. In the above embodiment, the number of measuring tanks is two to simplify the explanation, but the number can be increased to any desired number. Further, although one auxiliary tank 19, 20 is provided in each of the measuring tanks 9, 10, a plurality of auxiliary tanks 19, 20 may be provided. Further, from the measuring tanks 9 and 10, the auxiliary tank 19,
20 or collection chute 21 was carried out using switching chutes 15 and 16, but there is also an alternative method in which the weighing tank is tilted to one side and transferred to the auxiliary tank, and the weighing tank is tilted to the other side and transferred to the collection chute. It may also be a configuration. In addition, as shown in FIG.
Two gates 14a and 14b are provided, and when one gate 14a is opened, access to the auxiliary tank 20 is provided, and the other gate 14
It may be configured such that when the bag b is opened, the bag can be transferred to the collection chute 21. Although only the measuring tank 10 side is shown in FIG. 3, the measuring tank 9 side can also be configured in the same way. Furthermore, the measuring tanks 9, 10 are provided with only one discharge gate 13, 14 as in the above embodiment, and the auxiliary tanks 19, 20 are opened only when charging into the auxiliary tanks 19, 20.
It may be configured such that it is slid to the lower side of the measuring tanks 9 and 10. Furthermore, various known configurations can be used for the configuration of the determiner 49. Furthermore, when the articles to be weighed are discharged from both the auxiliary tank and the weighing tank, if it is desired to speed up the combination, the combination may be restarted by simply supplying the objects to be weighed only to the auxiliary tank or only to the weighing tank.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an embodiment of a combination weigher according to the present invention, FIG. 2 is a block diagram of the same embodiment, and FIG. 3 is a partially omitted schematic diagram of another embodiment. 9, 10...Measuring tank, 19,20...Auxiliary tank,
31, 32... Auxiliary tank memory device, 15, 16... Switching chute, {44... Selection circuit, combination device,
46... Combination generator, combination device, 47... Adder, combination device, 48... Combination storage, combination device, 49... Determiner, combination device, 50...
Setting device, }Combination device, 33, 34...Measuring tank discharge gate control path, 55, 59...Switching damper control circuit, 61, 62...Auxiliary tank discharge gate control circuit.

Claims (1)

[Claims] 1. A plurality of weighing devices each having a weighing tank and weighing the articles to be weighed contained therein, an auxiliary tank provided for each of the above-mentioned weighing tanks, and a plurality of weighing devices each having a weighing tank and weighing the objects to be weighed that are discharged from the above-mentioned weighing tank and the auxiliary tank. a collection chute for collecting, a device for distributing the weighed articles from the weighing tank to the auxiliary tank or the collection chute, and a plurality of auxiliary tank memories for storing weighed values when distributed to the auxiliary tank. a combination device that variously combines the measured values of the plurality of measuring devices and the stored values of the auxiliary tank storage device and compares them with a target value to obtain a suitable combination; the measuring tank related to the suitable combination; A combination weigher comprising a device for discharging the article to be weighed from an auxiliary tank.