JPS6050424A - Combination scale - Google Patents

Abstract

PURPOSE:To obtain a highly accurate combination scale, whose operating time is short, by providing a plurality of units each comprising two measuring hoppers, which alternately measure materials to be measured, and forming combinations, wherein one measured value is used from each unit of memory hoppers, into which the materials to be measured are conveyed from two measuring hoppers of each unit. CONSTITUTION:A plurality of units S1-S12 each comprising two measuring hoppers, which alternately measure materials to be measured, are provided. Memory hopper units M1-M18 each comprising three hoppers are provided under the measuring hoppers. The materials to be measured can be supplied to the central hopper M2 from either measuring hopper S1 or S2. One measured value is used to form a combination from each unit of the hopper units M1-M18. The combination, whose measured value of the weight is close to a preset weight value, is selected among the obtained combinations. Thus the combination scale whose operating time is short is obtained.

Description

[Detailed description of the invention] The present invention relates to improvements in combination weighers.

A so-called combination scale is equipped with a plurality of weighing hoppers for weighing supplied objects to be weighed, and selects a set weight or a combination close to the set weight by combining the weighing values of each weighing hopper.

In such a combination scale, efficiency is poor because the combination operation is stopped during the weighing time from when a combination is selected to when the next supplied object to be weighed is weighed.

In addition, as shown in Fig. 9, each weighing hopper (Sl)...
There are memory hoppers (Ml)... (M211) for storing weighed objects under (Sn) to increase the number of combinations, but even in such combination scales, the number of combinations is increased. Memory Hopper (Ml)...
(M2 n ) The assembling operation is stopped during the measurement time of the objects to be measured. Furthermore, if the memory hoppers do not stop, empty memory hoppers (Ml)...(M2 n ) are combined, so the combination accuracy decreases.

The present invention has been made in view of the above-mentioned conventional circumstances, and its purpose is to provide a combination weigher that has no dead time in combination work due to weighing time, short calculation time, and excellent combination accuracy. .

Such a combination weigher of the present invention is provided with a plurality of sets of two weighing hoppers that alternately weigh the supplied objects to be weighed, and the objects to be weighed are brought in from both weighing hoppers of each set. At the same time, a memory hopper is arranged for each group, and each group participates in 961 weighing values to create combinations.
The method is characterized in that a combination of measurement values that reaches a set amount of liters or a weight close to the set weight is selected from among the yield combinations.

An example of the implementation of the present invention will be explained with reference to FIGS. 1 and 4. In the figures, (Sl)...(812) is a weighing hopper, and each weighing hopper (Sl)...(S12) is a weighing hopper. Each weighing device weighs the supplied objects to be weighed, and two weighing devices are not provided as a set, and the weighing operation is, in principle, performed alternately.

3 below the weighing hopper (Sl)...(S12)
One set of memory hoppers (Ml)...CM, 8) is installed, and one set of memory hoppers (A'li) is installed.
)(Mz)(Ml) The structure is such that the object to be weighed can be supplied to the hopper (Mz) in the middle of the weighing hopper (SIXS2).

Memory hopper (Mt)...(MH+) is the weighing hopper (Sl)...(S12)! This is a hopper that stores the weighed object.

In the combination in the above combination weigher, (Ml) (Mz
) or (Ms ) or (Ms ) where the same set of memory hoppers are combined. This is because one of the weighing hoppers (SIXS2) of the same set is always stocked with already weighed objects, but the other is in storage, so the memory hopper (Ml) of the same set is always stocked with weighed objects. This is because if (Mz) becomes empty at the same time, the object to be weighed cannot be directly supplied.

A set weight or a combination of N amount close to the set weight is selected from among the combinations of the memory hoppers (Ml)...(Ml2) in which items of the same group do not participate at the same time, and the object to be weighed in the selected memory hopper is selected. Collect them to obtain a combination.

The operation of the above-mentioned combination scale will be explained. In the figure, the ○ of the weighing hopper (Sl)...(S12) indicates that the weighing is in progress, and the O of the memory hopper (Ml)...(Ml2) indicates the empty state. show.

First, objects to be weighed are supplied into all weighing hoppers (Sl)...(S12), and after weighing, the corresponding memory hoppers (Ml) (Ml)...(Ms6) (Mls)
The weighed object is transferred to the machine, a new object is supplied, and the weighing process begins (Fig. 1).

After weighing, odd numbered weighing hopper (Sl)...(Su
) to be weighed in the empty memory hopper (Mz)...(
When transferred to Ml7), the odd numbered weighing hopper (Sl)
... (So) is supplied with a new object to be weighed and is being weighed, and the even-numbered weighing hopper (S2) ... (S12
) is stocked with weighed objects (Fig. 2).

Memory hopper (Mz) (Ml), (M5) (M
A), .

The selected memory hopper is immediately supplied with the already weighed object from the even-numbered weighing hoppers (S2)...(S12), and a new object is supplied to the weighing hopper that supplied the 1ith object. is being weighed.

During the above-mentioned combining operation, the odd numbered weighing hopper (Sl)
... (SIX) is already weighed, and all or part of the even numbered KI quantity hoppers (S2) ... (812) are being weighed (Fig. 4). The following combinations are memory hoppers (Ml) (lJz ), (M4) (M5), ..., (
Mza) (IVII7) is selected from among the combinations in which one metric value participates from each set.

The above steps are repeated nine times.

Next, we will consider the total number of combinations of the above combination scales and the combination accuracy.

With conventional combination scales, the number of hots to be combined (-10 pieces 75;
It is common and the total number of combinations is 1o C1+10C2+ 5ac3+ 10C4+ t
oCs + 10C6+ 10C7+ 10C8+ I
OCe + toc 1° = 10 +45 +120 + 210 + 252
+ 210 + 120 + 45 + 10 +1
= 1023, and it is rare to combine more than that. This is because each time the number of hoppers increases, the number of combinations increases slightly and the combination calculation time increases. For example, when the number of combination hoppers increases to 11, the number of combinations becomes 2047.

In this embodiment, since there are no combinations taken from the same set, the number of weighing hoppers is set to 12 to increase the number of combinations. The total number of combinations in this example is 6CIX21+6C2X22+6C3X2"+6C4X
2'+6C5X250aCaX26 = 12 + 60 + 480 +240 + 19
2 + 64 = 1048.

Although there are two more weighing hoppers in this embodiment, the accuracy is superior to that of the conventional method, and the weighed objects are supplied to the empty memory hopper without waiting time, improving efficiency. good. Furthermore, since the combination is always made from 12 memory blocks, there is no loss of precision.

For example, in order to obtain a combination efficiency equal to that of this embodiment in the conventional example, if a combination is obtained from the remaining selected combinations, if there are 99 remaining, 9c 1+9 C2+9Ca+ec 4+9C5+9
C6+oC7+9C8+(Ic e= 9 +36 +
84 +126-1-126 +84 +36
+9+1=511, which results in a significant decrease in the combination accuracy.

Similarly, the arrangement structure of the hoppers in the above embodiment may be arbitrary, and may be arranged in two parallel rows or in a circumferential manner.

The second embodiment will be explained with reference to FIGS. 5 and 6. The weighing hoppers (Sl) to (S12) are the same as those in the first embodiment, and are arranged in a circumferential manner. and odd-numbered weighing hoppers (S1)...(S12) are arranged to carry out weighing operations alternately.

A memory hopper (Ml) is provided between the weighing hopper = (81) and (N2), and a detour (N2) is provided between the d1 amount hopper (N2) and (N3), so that the memory hopper <-(
Ml )...(Ma) and detour (N1)...(N6
) are arranged in a circle alternately.

Each weighing hopper (Sl)...(S12) is provided with a gate (G1)...(G12), respectively. ).

The memory hopper (Ml)... (Ma) is the same as in the first embodiment, for example, the memory hopper (Ml).
) is also supplied with the object to be subjected to H quantity when the weighing hopper (SIXS2) falls down.

The detour (N1)...(N6) is the hfN hopper (Sl
)...When the objects to be weighed in (812) are selected as a combination, the memory hopper (Ml)...(Ml2
), and for example, the detour (N1) passes through either the weighing hopper (S12) or (Sl).

When an odd numbered IT weighing hopper (Sl)...(Su) is weighing, weighing hopper = (N2) and memory hopper (Ml), (N4) and (M2), (N6) and (M3) )
, (N8) and CM4), (Sto) and (IvIs)
, (S12) and (b) 6) are combined (FIG. 5).

When the even numbered weighing hopper (N2)...(S12) is weighing, the weighing hopper (Sl) and memory hopper (Ml), (N3) and (M2), (N5) and (Ma)
, (S7) and (M4), (N9) and (M5), (So)
One metric value from each set of and <S,> is joined and combined.

To explain the combined operation example of the above embodiment with reference to the drawing, a combination is selected from even-numbered weighing hoppers (N2)...(812) and memory hoppers (Ml)...(Ma), and the memory If hopper (Ml) (Ml) and metering hopper (812) are selected (FIG. 7), then the hopper (Ml) (M3XS12) is discharged and emptied as a combination.

Next, switch the gears (Gx)... (G12) as shown in Figure 8, feed the weighing hopper (S12) with the object to be weighed, and also feed the object to be weighed into the memory hopper (Ml) 9. supplies the already weighed object in the weighing hopper (82XS6), and supplies a new object to be weighed to the weighing hopper (82XS6).

Weighing hopper (82X86XS12) is in total 1,
The weighing hopper (84 x 88 x 810) is stocked with weighed objects that are in the order of weighing.

Next is the odd numbered hopper (Sl)...(Stt)
and the memory hopper (Ml)...(M,+) to select a combination, and the above operation is repeated.

Incidentally, the combination accuracy of this embodiment is the same as that of the first embodiment, and the explanation thereof will be omitted.

In this embodiment, the same accuracy can be obtained with a smaller number of memory hoppers than in the first embodiment.

As described above, the present invention provides a plurality of sets of two weighing hoppers that alternately weigh supplied objects to be weighed, and the weighed objects are carried in from both weighing hoppers of each set. Memory Horapara will be allocated to one Tsukuda for each group, and
The combination scale is constructed so that one weighing value from each group is entered to create a combination, and a combination of weighing values that reaches a set weight or a weight close to the set weight is selected from among the combined yields.
There is no dead time in the combination time due to measurement time, and the combination speed is quick and efficient.

Furthermore, since combinations are always obtained from a fixed number of hoppers, the degree of sheathing is stable.

Thus, the desired goal is achieved.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the first embodiment of the uA of the present invention, Figs. 2 to 4 are explanatory diagrams of the same operation, Fig. 5 is a block diagram of the second embodiment, and Figs. 6 to 8 are the same. The operation explanatory diagram, FIG. 9, is a configuration diagram of a conventional example. In the figure, (81)...(812)...Weighing hopper QV
I) -(Mlll) ・-- It is a memory hopper. Patent applicant: Teraoka Seiko Co., Ltd. ( ) Peng Procedural Amendment September 88, 1988 2. Invention name combination scale 3: Relationship with the case of the person making the amendment Patent applicant Name (name) Teraoka Seiko Co., Ltd. Showa year time

Claims (1)

[Claims] A plurality of sets of two weighing hoppers are provided to alternately weigh the supplied objects to be weighed, and one memory hopper is assigned to each group into which the weighed objects are carried in from both weighing hoppers of each set. At the same time, each group participates in 961 measured values to create a combination, and from the combined yields, a set weight or a weight close to the set weight is reached! A combination scale that selects combinations of i quantity values.