JPH0723142B2 - Egg sorting and packaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is a packaging unit in which eggs of different weight categories are partially selected while utilizing the weight categories of eggs based on the Ministry of Agriculture, Forestry and Fisheries trade standard. The present invention relates to a chicken egg sorting / packaging apparatus capable of mixing and packaging eggs belonging to different weight categories so that a predetermined number of the eggs have a set weight.

(Prior Art) As is well known, when selling eggs, they are classified into the following 6 grades (hereinafter, also referred to as “grades”) based on the trading standards of the Ministry of Agriculture, Forestry and Fisheries.

That is, SS grade (40g to less than 46g), S grade (46g to less than 52g), MS grade (52g to less than 58g), M grade (5
8g to 64g), L grade (64g to 70g), 2L
There are 6 weight categories of grade (70g to less than 76g).

Currently, within the weight categories, a specified number of eggs of the same grade are packed and packed (hereinafter,
A certain number of chicken eggs packed in a container is also called a “pack”. ). As described above, there are many automatic sorting and packaging devices that select and pack a predetermined number of eggs of the same grade, and the processing capacity thereof is increasing year by year.

(Problems to be solved by the invention) By the way, eggs sold in supermarkets are
Most of the M and L grades have a high unit price per kg for M and L grade eggs, and kg for other grades.
Currently, the unit price is low.

Therefore, in order to reduce such a difference in unit price of kg, M
・ L-grade eggs are mixed with other grade eggs as appropriate
The pack is sold so that the weight of the pack is almost constant. In this case, however, it is the current situation that the eggs that have been packaged for each grade are manually removed, mixed, and repackaged. . However, such a method has a problem that it is costly and causes rupture of eggs, and that it is practically impossible to package in large quantities.

In addition, as a weighing method in which a lumpy article with variations in unit weight is sequentially weighed, and a predetermined number is contained within a certain weight range,
There is a method disclosed in JP-B-57-29651, but this method is a so-called batch method and cannot be used for automatic sorting and packaging of chicken eggs for single-row transportation, non-stop, and large-volume processing. It is a thing.

The present invention has been made to solve the above-mentioned problems, and a packaging line for selecting and packaging a predetermined number of eggs of the same grade is used as it is, for example, a grade 4 (MS,
A packaging line (hereinafter referred to as "M, L, 2L) that selects a predetermined number of eggs in a transport order while the eggs are being transported in a single row and wraps them at a predetermined target weight. It is intended to provide a sorting and packaging device capable of sorting and packaging a predetermined number of chicken eggs satisfying the target weight as one packaging unit in this mixing line.

(Means for Solving Problems) A chicken egg sorting and packaging apparatus according to the present invention comprises a weighing device for weighing the weight of an egg, a transport device for sequentially transporting the measured eggs in a single row, and a weighing device for weighing. An arithmetic unit that stores the weight of the chicken eggs and that selects a predetermined number of eggs based on the weight of the eggs while the weighed eggs are being conveyed by the conveying device, and is provided on the conveying path of the conveying device. In a sorting and packaging apparatus for eggs, which comprises a packaging device for packaging a predetermined number of eggs selected by the device as one packaging unit, the computing device is based on a target weight for one package preset in the computing device. Weight setting means for setting the target lower limit weight and the target upper limit weight of the n-th egg based on the calculated average weight of the egg, and the insufficient weight to the target weight from the total weight of the selected n-th eggs And a judgment to determine whether or not the stored weight of the egg satisfies the n-th target lower limit weight and the target upper limit weight and whether or not the deficient weight with respect to the target weight is satisfied. And a means for sorting and packaging a predetermined number of eggs that satisfy the target weight as one packaging unit.

Further, the present invention, in the above egg sorting and packaging apparatus, the average weight of the eggs calculated by the weight setting means is a value obtained by dividing the target weight by a predetermined number, and the target lower limit weight and the target upper limit weight are the average. The allowable range is set to the value obtained by multiplying the weight by n.

Further, in the present invention, in the above egg sorting and packaging apparatus, the deficient weight calculated by the limiting weight setting means is a lower limit value obtained by subtracting the n-th target upper limit weight from the target weight, and the target weight to the target lower limit. The allowable range is set so that the upper limit value is obtained by subtracting the weight.

Further, the present invention, in the above egg sorting and packaging apparatus, the insufficient weight calculated by the limiting weight setting means is set by subtracting the total weight of the already selected eggs from the target weight, and the determining means is A means for continuously accumulating the weight of the chicken eggs in the order of conveyance until a predetermined number is provided is provided.

Further, the present invention comprises a means for judging in the above-mentioned egg sorting and packaging apparatus, which comprises means for continuously accumulating the weight of eggs until a predetermined number is obtained in the order of transportation after a predetermined number of eggs have been selected. Is.

(Operation) In the present invention, the average weight of the selected eggs is calculated, the allowable range is set to this average weight, the target lower limit weight and the upper limit weight of the selected eggs are calculated, and the target lower limit weight and According to the upper limit weight, the arithmetic unit is provided with a means for selecting a predetermined number of eggs, so that the eggs satisfying the target weight with a predetermined number can be collected as one package of eggs, whereby multiple grades of eggs can be obtained. It is possible to obtain a chicken egg pack satisfying the target weight with a predetermined number of mixed eggs.

(Examples) Examples of the present invention will be described below with reference to the drawings.

Example 1 FIG. 1 is a schematic plan explanatory view of an egg sorting and packaging apparatus according to the present invention. In the figure, 21 is a weighing machine (weighing apparatus) for individually weighing eggs 26, and 22 is after weighing. Is a computing device including a micro computer that selects a predetermined number based on the weight of the chicken eggs 26 while the chicken eggs 26 are being transported by the transport conveyor 29. Further, 23 and 25 are packaging devices for packaging the eggs 26, which are selected in a predetermined number by the computing device 22, as one packaging unit, and are provided on the transport path of the transport conveyor 29, 23
Is a mixing line for obtaining a package of chicken eggs 26 satisfying a target weight in a predetermined number, and 25 is a packaging line for packaging a predetermined number of eggs 26 in each grade. Further, 24 is a shutter for discharging the chicken eggs 26 conveyed in a single row into a packaging container (for example, a 10-packed plastic container) 31 waiting in the mixing line 23 or the packaging line 25 in response to a command from the arithmetic unit 22. It is provided for each of the packaging devices 23, 25. 29
Is a transfer conveyor for sequentially transferring the measured eggs 26 in a single row.

Next, the operation of the egg sorting and packaging apparatus according to the present invention will be described with reference to the block diagram shown in FIG.

In the figure, 28 is an encoder attached to the rotary shaft 27 of the conveyor 29. Also, 30 is a mixing line 23
And a driver of a DC motor that moves the belt conveyor of the packaging line 25. In this embodiment, 7 rows (MS, M, L, 2
In addition to the packaging line 25 for L, S, SS, 3L), one line of the mixing line 23 is provided, so that the line of FIG.

Normally, the eggs 26 are transported in 6 rows, so the weighing machine 21 is provided for 6 rows, and the eggs 26 weighed by the weighing machine 21 are provided.
Are transferred from 6 columns to a single column.

The weight of the hen egg 26 (hereinafter, also referred to as “egg weight”) is
In order to synchronize with the position of the egg 26 on the conveyor 29, the rotation detection signal from the encoder 28 attached to the rotation shaft 27 and the photo sensor is input to the arithmetic unit 22.

Further, in the arithmetic unit 22, the packaging location of the egg is calculated according to the flowchart to be described later, based on the calculation result, an operation signal is sent to the shutter 24, and the shutter 24 is operated by the operation signal from the arithmetic unit 22 and conveyed. The chicken eggs (26) are delivered from the conveyor (29) to the packaging container (31) waiting on the packaging line (25) or the mixing line (23). Further, the operation device 22 outputs an operation instruction to the driver 30 of the packaging devices 23 and 25, and the driver 30 operates the DC motor in response to the operation instruction from the operation device 22, and the belt conveyor of the packaging devices 23 and 25. Half step or full step. In the half step instruction, the loading of the eggs 26 in the first row of the packaging container 31 is completed, and the movement of the belt conveyor of about half of the packaging container 31 is executed to deposit the eggs in the second row. In the step command, the loading of the eggs 26 into the second row of the packaging container 31 is completed, and the movement of the belt conveyor about the width of the packaging container 31 is executed in order to deposit the eggs into the next container 31. .

Further, the arithmetic unit 22 stores a calculation program for obtaining the packaging of the mixed pack in the mixing line 23, and this calculation program is a preset program for selecting the nth egg 26. Set the target lower limit weight and target upper limit weight for the nth item by setting the allowable range for selection to a value obtained by dividing the average egg weight obtained by dividing the target weight of the package by the predetermined number of one packaging unit by n times. A weight setting program and an insufficient weight with an allowable range in which the nth target upper limit weight is subtracted from the target weight to obtain the lower limit value, and the nth target lower limit weight is subtracted from the target weight to obtain the upper limit value. The limit weight setting program to be set and whether the egg weight satisfies the target lower limit weight and the target upper limit weight calculated by the weight setting program, and the insufficient weight calculated by the limit weight setting program is satisfied. Consisting of a determines whether the judgment program.

Next, the calculation method of the n-th target lower limit weight and target upper limit weight set by the weight setting program is shown in Table 1 (n
Will be described based on each target weight range of 1 to 9).

In the present embodiment, the predetermined number of 10 pieces is selected as one packaging unit for sorting and packaging. In Table 1, L3 (1 to 10)
Is the target lower limit of egg weight for selecting the 1st to 10th eggs (weight in pack (lower limit)), and H3 (1-10) is the same target upper limit of egg weight (weight in pack (upper limit) )), M1 is the average egg weight obtained by dividing the target weight by the predetermined number (1 / NPg of the set weight), and H1 is the upper limit weight of the egg weight used for the combination (predetermined egg). 1 upper limit weight), L1 is also the lower limit weight (one predetermined lower limit weight of the egg weight), H2 is the upper limit weight of the target weight, and L2 is the lower limit weight of the target weight.

The first target lower limit weight is L3 (1) = 2M1-H1, that is, the value obtained by subtracting the upper limit weight H1 of the egg weights used in the combination from the two average egg weights M1.

Further, the first target upper limit weight is H3 (1) = 2M1-L1, that is, the value obtained by subtracting the lower limit weight L1 of the egg weight used for combination from the two of the average egg weight M1.

Therefore, target lower limit weight L3 (1) and target upper limit weight H3 (1)
An egg weight within the range of and is selected as the first chicken egg.

In addition, the allowable error provided in the value obtained by multiplying the average egg weight by n times in order to obtain the target lower limit weight and the target upper limit weight will be described by using the formula of the first target weight range as an example.

The target lower limit weight is M1−H1 because L3 (1) = 2M1−H1 = M1 + M1−H1 = M1 + (M1−H1). This is the value obtained by subtracting the upper limit weight H1 of the egg weight used for combination from the average egg weight M1.
The target lower limit weight is the value obtained by multiplying the average egg weight M1 by 1 (M1
-H1) is added.

The target lower limit weight is M1−L1 since H3 (1) = 2M1−L1 = M1 + M1−L1 = M1 + (M1−L1). This is the value obtained by subtracting the lower limit weight L1 of the egg weight used for combination from the average egg weight M1.
The target upper limit weight of the first piece is a value obtained by multiplying the average egg weight M1 by 1 (M1
-L1) is added.

Further, the second target lower limit weight is the value obtained by doubling the average egg weight M1 and (M1-H1), and the target upper limit weight is the value obtained by doubling the average egg weight M1 ( M1-L1) is added.

Table 1 shows the target lower limit weight and target upper limit weight of the 2nd to 9th egg weights calculated in the same manner, and the 10th target lower limit weight L3 (10) and target. Maximum weight H3
(10) is the lower limit weight L2 and the upper limit weight of the target weight, respectively
It is equal to H2.

Next, a calculation method for calculating a range for selecting the next egg weight (hereinafter, referred to as “selection range”) each time the egg weight is selected in sequence will be described based on Table 1.

For example, if the egg weight selected as the first egg is n (1), the selection range of the egg weight n (2) selected as the second egg is from the target lower limit weight L3 (2) to n (1). , And the value obtained by subtracting n (1) from the target upper limit weight H3 (2) {L3 (2) -n (1)} ≤ n (2) ≤ {H3 (2) -n (1)} From the table, substitute L3 (2) = 3M1−H1 H3 (2) = 3M1−L1 to obtain {(3M1−H1) −n (1)} ≦ n (2) ≦ {(3M1−L1) −n (1)} ... (a).

Similarly, the selection range of the egg weight n (3) selected as the third egg is [L3 (3)-{n (1) + n (2)}] ≤n (3) ≤ [H3 (3)- From {n (1) + n (2)}], [(4M1-H1)-{n (1) + n (2)}] ≤n (3) ≤ [(4M1-L1)-{n (1) + n (2)}] ... (B)

The selection range of the 4th to 9th egg weights is calculated in the same manner.

Next, n set by the limit weight setting program
A method of calculating the insufficient weight when selecting the egg weight of the first piece will be described.

When the egg weight n (1) is selected as the first egg, the deficient weight corresponding to the nine eggs that will be selected thereafter is calculated from the lower limit weight L2 of the target weight to the first upper target weight of the first egg. H3 (1)
A value {L2- (2M1-L)} and a value {H2- (2M1-H1)} obtained by subtracting the first target lower limit weight L3 (1) from the upper limit weight H2 of the target weight, That is, {L2- (2M1-L1)} ≤ {n (2) + ... + n (10)} ≤ {H2- (2M1-H1)}. Therefore, the range of weight for the second egg weight is
The inequality of the insufficient weight is divided by the insufficient number of 9 to calculate the average weight, and the average weight is set as a selection range, and 1/9 {L2- (2M1-L1)} ≤1 / 9 {n (2) + ... + N (10)} ≤ 1/9 {H2- (2M1-H1)} (C).

Also, the egg weight n (2) is selected as the second, and after this,
The deficient weight corresponding to the 8 chicken eggs that would be selected would be {L2- (3M1-L1)} ≤ {n (3) + ... + n (10)} ≤ {H2- (3M1-H1)} The weight range for the third egg weight is calculated by dividing the above inequality of insufficient weight by the insufficient number of 8 and calculating the average weight, and this average weight is set as the selected range, and 1/8 {L2- (3M1-L1) } ≤ 1/8 {n (3) + ... + n (10)} ≤ 1/8 {H2- (3M1-H1)} (d). The selection range of the 4th to 9th egg weights is calculated in the same manner.

In addition, the insufficient weight when selecting the first egg weight is the case where the lower limit weight L1 and the upper limit weight H1 of the egg weights used in the combination are within that range, and the lower limit weight L2 and the upper limit weight of the target weight.
There are cases where H2 and H2 are each divided by a predetermined number to be within the range, and the former is adopted in this embodiment.

Next, an operation program of the egg egg sorting and packaging apparatus according to the present embodiment will be described based on the flow cheats shown in FIGS. 3 and 4.

When a new chicken egg is calculated by the weighing machine 21, its weight is input to the arithmetic unit 22 as egg weight data, but first, it is determined whether or not the egg weight has been input, and if it has not been input, Wait until input is made, and the loop is exited by inputting egg weight data as egg weight data (step 1). Next, in order to register and store the egg weight, the content of the finger buffer in the arithmetic unit 22 is shifted by 1 (step 2). After weighing the finger buffer,
It is compatible with individual eggs that are sequentially transported, from NO.11 to N.
The egg weight is registered in the area of O.1 and the packing place is set. The shifted and empty finger buffer N
When egg weight is registered in O.1 (step 3), it is judged whether the egg weight registered in finger buffer NO.1 is MS, M, L or 2L grade (step 4). ), MS,
If the egg weight is other than M, L, 2L grades, register the eggs as if they were packaged by grade as usual, that is, set a flag (step 5) and proceed to step 1 to judge the egg weight to be input next. Return.

As a result of the judgment in step 4, if the egg weight is any of MS, M, L, and 2L grades, a flag is set as a combination participating chicken egg for mixed packaging (step 6). Next, it is determined whether or not the combination was established last time, that is, whether or not the egg weight was selected (step 7). This means that if the egg weight was selected as a chicken egg for mixed packaging in the previous combination, a new egg weight selection range must be calculated based on the determination program in order to select the next egg weight. This is because, if not selected, the already calculated selection range will be used again. Therefore, in step 7, if the egg was not selected last time, jump to step 10, and if it is selected,
A selection range is calculated based on the weight setting program (step 8). And as shown in Table 2 below,
A range of egg weights (hereinafter referred to as an egg weight range) that simultaneously satisfies the selection range of the average egg weight calculated based on the above-mentioned weight limit setting program and the selection range calculated in step 8.
Is calculated by the judgment program (step 9). Next, it is judged whether or not the egg weight registered in the finger buffer No. 1 satisfies the above-mentioned egg weight range (step 10), and if it is not satisfied, the same as the judgment in step 7, It is judged whether or not the combination has been established, that is, whether or not the chicken egg has been selected (step 11), and if not selected, the process returns to step 1. Last time, the combination was established, this time, if the selection by a new egg weight range, in order to determine again whether there is an egg weight that can be selected by going back a certain range, for example, in this example, go back 10 To check, enter No. 11 in variable X (step 12). Then, it is judged whether or not the egg weight registered in the X-th finger buffer is a combination participating egg that is still selectable (step 13).
Jump to. It is judged whether the egg weight range is satisfied in the case of combined participating eggs (step 14). As a result of the judgment, if the egg weight input to the variable Xth finger buffer satisfies the egg weight range, step If the result of the determination is that the egg weight range is not satisfied, it is determined whether the variable X is NO.2 (step 15). Then, if X = NO.2, the process returns to step 1. If X ≠ NO.2, the number of the variable X is decremented by 1, and if X = NO.11, then X = NO.10 is set (step 16), jump to step 13. Check the egg weights of finger buffers No.11 to No.2, then step 13 to step 16
Exit the loop up to and return to step 1.

In step 10, if the egg weight registered in the finger buffer NO.1 satisfies the egg weight range, the number of eggs selected as a mixed package and the egg weight are respectively accumulated (step
17), it is judged whether or not 10 egg weights have been selected (step 18). If not already selected, go back to step 1 and select 10 egg weights, which contain the maximum number of chicken eggs selected for the same mixed packaging, and the unselected combinations within that range. The non-selected combination participating eggs between the participating eggs, the previous mixed packaging group, and the current mixed packaging group are flagged as eggs to be packaged according to grade without participating in the combination in the future (step 19). Then set the initial value to select the egg weight for the new mixed packaging (step
20), return to step 1.

Next, the target weight is 590 g, the lower limit weight L2 of the target weight is 585 g,
Upper limit weight H2 of target weight is 595g, combined participation egg 2L,
A specific selection method according to the program shown in the above flow chart will be shown with 4 grades of L, M and MS, the lower limit of egg weight L1 is 52 g and the upper limit of egg weight H1 is 76 g.

As shown in the column of the weight range of the number in the pack of Table 2, the target lower limit weight and the target upper limit weight are sequentially calculated from the first to ninth pieces by the weight setting program.

In addition, in the limit weight setting program, based on the target lower limit weight and target upper limit weight that are sequentially calculated, the insufficient weight (weight shown in the column of the weight range of the insufficient number in the second vote) and the average egg weight at that time are calculated. The selection range (weight shown for eggs in the egg weight range of the next selected egg in Table 2) is calculated.

Explaining the first item, the target lower limit weight of the first item and
L3 (1) and target upper limit weight H3 (1) are L3 (1) = (590/10) x 2-76 = 42g H3 (1) = (590/10) x 2-52 = 66g Since the target weight is 590 g, the lower limit weight is 585 g, and the upper limit weight is 595 g, (585-66) g to (595- 42) g, and the selection range of the average egg weight is (585-66) / 9g to (595-42) / 9g, that is, 57.7g to 61.4g.

The selection range 52 to 76 g of the average egg weight in the first line of the "Egg weight range of the next selected egg" is the lower limit weight and the upper limit weight of the egg weight used in the combination.

The order of sequentially selecting the egg weights shown in the actual egg weight table of Table 3 will be described below based on Table 2.

First, the egg weight range that can be selected as the first egg is the first egg weight in the column of "weight range of number in pack" as shown in Table 2.
The range is 42 to 66 g and 52 to 76 g in the column of "Egg weight range of the next selected egg" at the same time, that is, 52 to 66 g. Since the first egg weight of 62.5 g in Table 3 satisfies the egg weight range of 52 to 66 g, it is selected as the first egg a1 of the mixed pack a group.

The second egg weight range was obtained by subtracting 62.5 g of the egg weight selected as the first egg from this weight range because the target weight up to the second egg was 101 to 125 g from Table 2. Weight range (101-62.5) to (125-62.5) g That is, 38.5 to 62.5g is the second selection range, and this selection range is 38.5 to 62.5g and the average weight selection range is 57.7 to 9 insufficiency. It will be 57.7-61.4g that satisfies 61.4g at the same time. Therefore, the fifth 59.1 g satisfies this egg weight range and is selected as the second chicken egg a2.

By the same method, the weight range of the third egg becomes 57.5 to 61.8 g.
The sixth egg weight of 52.7g does not satisfy the third egg weight range, so we went back up to 10 eggs and had not yet selected,
It is judged whether or not there is one that satisfies the third egg weight range, and even if it is judged retroactively, there is no satisfied egg weight, so it is judged whether or not the 7th egg weight of 61.5 g is satisfied. To do. The 7th egg weight of 61.5g satisfies the egg weight range of 57.5 to 61.8g, so 3
Selected as the third egg a3.

Similarly, as shown in the column of “combination order” in the actual egg weight table of Table 3, group a, group b, group c and group d are each selected as a mixed pack of one packaging unit. Then, it is packaged in the mixing line.

In this way, the eggs for mixed packs are efficiently selected while the eggs after weighing are conveyed in a single row.

The first egg weight range may be a range in which a range from the lower limit weight L1 to the upper limit weight H1 of the egg weights used for combination is selected. In this case, the egg weight range of this embodiment is used from the second egg.

Example 2. The egg egg sorting and packaging apparatus of the present embodiment, the arithmetic unit 22, from the target weight, a limit weight setting program for calculating the shortage weight by reducing the total weight of the already selected eggs,
And a judgment program having a program for continuously accumulating the weights of the combined and participating eggs until a predetermined number is reached.

That is, in the process of selecting a predetermined number N of egg weights, t
When the egg weight is selected, the remaining (Nt) eggs are successively accumulated in weight (Nt) of the eggs sequentially conveyed in a single row on the conveyor 29, and the accumulated weight is It is determined whether or not the insufficient weight is satisfied, and if it is not satisfied, the method according to the above-described embodiment is selected, and if it is satisfied, it is collectively selected.

Next, assuming that the predetermined number N is 10 and the number t of egg weights already selected is 5, a method of calculating the insufficient weight in the limit weight setting program of the present embodiment will be described.

If the total weight of the first to fifth eggs already selected is n (1) + ... + n (5), the insufficient weight n
(6) + ... + n (10) is the total weight n (1) + ... + n (5) from the lower limit weight L2 and the upper limit weight H2 of the target weight, respectively.
[L2- {n (1) + ... + n (5)}] ≤ {n (6) + ... + n (10)} ≤ [H2 + {n (1) + ... + n (5 )}]… (E) Therefore, if the cumulative total of the weight of 6 eggs to be transported satisfies the shortage weight of the formula (e), it is selected at once, and if not satisfied, the 6th egg weight is the same as the previous method. Then, the sixth egg weight is selected, and when selecting the seventh egg weight, the shortage weight is calculated in order to make a collective selection again.

Next, the selection method will be described based on the actual egg weight table shown in Table 4.

The egg weights a1 to a5 in the mixed pack a group are selected by the same method in the above-mentioned embodiment. The total weight of the already selected egg weights is 301g, which is the total weight of eggs from a1 to a5. )
Is (585-301) to (595-301) g, that is, 284 to 294 g. Next, from the 13th 63.2g
The cumulative total of 5 eggs up to the 17th 61.6 g is 304.2 g, but since the weight range 284 to 294 g is not satisfied, the sixth egg weight should be selected by the same method as in the above-mentioned example. Becomes In other words, as a result of judging back 10
A second egg weight of 56.9 g is selected as a6.

Next, the total weight of eggs from a1 to a6 is 357.9 g, so the weight range that can be taken by the weight of four eggs is 22
It will be 7.1-237.1g. Therefore, the total of 4 egg weights from the 13th 63.2g to the 16th 63.1g is 242.5g.
However, since it does not satisfy the weight range 227.1-237.1g,
Only the 7th egg weight will be selected. As shown in Table 4, for group a, the same results are obtained as when the method of the above-described embodiment is selected.

Next, the mixed pack b group will be described.
b1 to b6 are selected by the method of the above embodiment, and the weight in the pack at this time is 352.2 g. Therefore, the weight range that can be taken by the weight of four deficient eggs relative to the predetermined number of 10 is (585-352.2) to (595-352.2) g, that is, 232.
It will be 8-242.8g. Next from the 27th 61.0g to the 30th
The cumulative total of 4 egg weights up to 68.9g is 240.3g, which satisfies the weight range of 232.8-242.8g.
Th, 29th and 30th egg weights are b7, b8,
Selected collectively as b9 and b10.

As shown in Table 4 for the mixed pack c group,
Up to the 8th item is selected by the method of the above-mentioned embodiment,
58.9g of the 4th and 55.6g of the 44th are c9 and c10 of the c group
Are selected as a batch. Eggs that are out of the selection of the mixed pack, that is, eggs that do not have a combination in the combination order column of Table 4, are packaged by grade.

As described above, in the present embodiment, when selecting the egg weights from the sixth egg, the weights of the eggs are continuously accumulated in the order in which they are conveyed, and it is determined whether or not these eggs can be collectively selected. Therefore, chicken eggs for mixed packaging can be selected at a higher speed than in the above-mentioned embodiment.

Example 3 In this example, as a modified example of Example 2, when t = 1, that is, after selecting the first egg, a method of selecting a group of eggs that can be continuously packed is adopted. It was done,
The selection method will be described based on Table 5.

As shown in Table 5, the same results as in Example 1 were obtained for the mixed pack a group. Also, regarding the mixed pack b group, the fourth group of b1 to b4 is not collectively selected, but one by one is sequentially selected by the same method as in the first embodiment. After the fourth egg weight is selected, the predetermined number
In order to determine whether or not 6 deficient eggs for 10 can be selected all at once in a row, the egg weights from b1 to b4 are added up to calculate an in-pack weight of 235.5 g. Therefore, the weight range that can be taken by the weight of the deficiency of 6 eggs for the predetermined number of 10 is (585-235.5) to (595-235.5) g, that is, 34
It will be 9.5-359.5g.

Next, the six egg weights from the 24th 63.9g to the 29th 52.0g are added up to 352g. As a result, the weight range 34
Since it satisfies 9.5-359.5g, 24th, 25th, 2nd
The 6th, 27th, 28th and 29th egg weights are collectively selected as b5, b6, b7, b8, b9, b10 of the b group.

For the mixed pack c group, the 43rd and 44th groups are collectively selected as c9 and c10.

In this embodiment, after selecting the first egg, it is judged whether or not the selected egg weights can be collectively selected. Therefore, the chicken eggs for mixed packaging are faster than those in the second embodiment. Will be obtained.

Example 4 In this example, as a modified example of Example 2, when t = 0, that is, a predetermined number N of egg weights conveyed in a single row are continuously accumulated, and the accumulated weight is satisfied. Whether or not to do so, if satisfied, these egg weights are selected as one group of the mixed pack.

In addition, in the said Examples 2-3, when selecting the egg weight individually, although the selection range of the chicken egg in the said Example 1 was employ | adopted, only the selection range calculated by the weight setting program was employ | adopted and selected. You may do it.

Further, the combination participating eggs are not limited to the 4 grades of MS, M, L and 2L, but may be all grades including SS, S and 3L.

Further, it goes without saying that the probability of combination is increased by appropriately adjusting the set weight range from the distribution state of egg weight. At that time, the average egg weight calculated based on the target weight is the weight obtained by dividing the insufficient weight obtained by subtracting the total weight of the already selected egg weights from the target weight by the insufficient number.

In addition, by increasing the number of mixing lines to two or three, it is possible for the combined participating eggs that are transported in a single row to be combined many times before passing the mixing line, and the probability of obtaining a combination naturally increases. Become.

Furthermore, the target lower limit weight L3 (n) and the target upper limit weight H3
(N) may be L3 (n) = M1 * n-MH3 (n) = M1 * n + M obtained by multiplying the average weight M1 by n times the value ± Mg.

(Effect of the Invention) According to the present invention, means for selecting the target lower limit weight and the upper limit weight by setting an allowable range for the average weight of the selected eggs and selecting a predetermined number of chicken eggs according to the target lower limit weight and the upper limit weight Since it is equipped with a computing device, eggs that satisfy the target weight with a predetermined number can be collected in the packaging device as one package of eggs, which allows the target weight with a predetermined number of eggs of multiple grades to be mixed. It is possible to obtain a chicken egg pack satisfying the above conditions, and by doing so, it is possible to sell chicken eggs in a new mixed pack that is not restricted by the conventional grade-specific packs, and it is possible to suppress fluctuations in kg unit price depending on the size of chicken eggs. It has a great effect on packaging management.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a chicken egg sorting and packaging apparatus according to the present invention, FIG. 2 is a block diagram illustrating the operation of the egg sorting and packaging apparatus according to the present invention, FIG. 3 is a flow chart diagram, and FIG. Is a flow chart diagram. 21 …… Weighing machine, 22 …… Computing device 23 …… Mixing line, 24 …… Shutter 25 …… Grade line, 26 …… Egg 27 …… Rotary axis, 28 …… Encoder 29 …… Single-row conveyor 30… … DC motor driver 31 …… Container, a …… Single-row conveyor Conveyor direction

Claims (5)

[Claims] 1. A weighing device for weighing the weight of eggs, a transporting device for sequentially transporting the weighed eggs in a single row, a storage device for storing the weight of the eggs weighed by the weighing device, and transporting the eggs after weighing. A processing unit that selects a predetermined number of eggs based on the weight of the eggs while being transported by the device, and a predetermined number of eggs selected by the processing unit that are provided along the transfer route of the transfer device and are packaged as one packaging unit. In an egg sorting and packaging apparatus including a packaging device, the arithmetic unit calculates the n-th egg based on the average weight of the eggs calculated based on the target weight of one package preset in the arithmetic unit. Weight setting means for setting the target lower limit weight and the target upper limit weight, a limit weight setting means for calculating the insufficient weight with respect to the target weight from the total weight of the nth selected eggs, and the stored weight of the egg. The quantity is provided with a judging means for judging whether or not the quantity satisfies the n-th target lower limit weight and the target upper limit weight and whether or not the insufficient weight with respect to the target weight is satisfied, and the predetermined number satisfies the target weight. An egg sorting / packaging apparatus, which sorts and packs the eggs into one packaging unit. 2. The average weight of the chicken eggs calculated by the weight setting means is a value obtained by dividing the target weight by a predetermined number, and the target lower limit weight and the target upper limit weight are within an allowable range of n times the average weight. The egg sorting and packaging device according to claim 1, wherein the sorting and packaging device for eggs is provided. 3. The insufficient weight calculated by the limit weight setting means is a lower limit value by subtracting the nth target upper limit weight from the target weight and an upper limit value by subtracting the target lower limit weight from the target weight. The egg sorting and packaging apparatus according to claim 1, wherein an allowable range is provided. 4. The deficient weight calculated by the limit weight setting means is set by subtracting the total weight of the already selected eggs from the target weight, and the determining means determines the weight of the eggs by a predetermined number in the transport order. The egg egg sorting and packaging apparatus according to claim 1, further comprising means for continuously accumulating until. 5. The determination means includes means for continuously accumulating the weight of eggs until a predetermined number is obtained in the order of transportation after a predetermined number of eggs have been selected.
An apparatus for selecting and packaging eggs according to the item.