JPH0815884B2 - Egg constant quantity and constant weight classifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is to measure the egg weight of individual eggs in order to make the total weight as one packaging unit accurate with respect to the eggs which have variations in single weight, Relating to a classifying device.

(Prior Art) When selling eggs, the standards are classified into the following 6 grades based on the Ministry of Agriculture, Forestry and Fisheries Trade Standards. That is, this classification is SS (40g to less than 46g) S (46g to 52g) MS
(52g ~ 58g) M (58g ~ 64g) L (64g ~ 70g) 2L (70g ~ 7
6g) 6 weight categories. At present, a predetermined number of pieces are packed in a pack within the frame of these division bands and packed, but there are many sorting and packing devices of this kind, and the processing capacity thereof is increasing year by year.

However, when sold in packs of 10 in supermarkets, etc., theoretically, there is a difference in total weight of 60g even for packs of the same grade. That is, even a pack of 10 packs of the same size L weighs 700g, while the lighter pack weighs 640g, which means that there is a difference of 1 pack. In order to reduce such adverse effects, some products are currently distributed only by total weight, exceeding the classification of the Ministry of Agriculture, Forestry and Fisheries Trade Standards, but each package is measured manually by a worker. It is the actual situation. Incidentally, there is a method of Japanese Patent Publication No. 57-29651 as a weighing method for sequentially weighing lumpy articles with variations in unit weight and keeping a predetermined number within a certain weight range, but this method is a so-called batch method, It cannot be used for automatic packaging of eggs according to the present invention, which is carried in a row, stopped, and processed in large quantities.

(Problems to be Solved by the Invention) Therefore, in the present invention, instead of the conventional concept of grade selection, in order to keep one pack within a set weight range,
A predetermined number N, which is the target egg weight of each chicken egg in the single-row transportation for distribution after weighing.
For each deficiency, the eggs to be selectively released are designated, and a target predetermined weight and a predetermined number, or in other cases, only a predetermined weight is automatically obtained.

(Means for Solving the Problem) In order to solve this problem, the present invention addresses the shortage of a predetermined number N for each chicken egg that sequentially arrives at a constant weight packaging place by a distribution conveyor. It achieves the purpose by carrying out selective release by adding egg weight restriction,
Eggs out of the above-mentioned selection are intended to automatically obtain a large amount of constant weight packaging of eggs by batching them in a packaging place other than the constant weight packaging place or by distributing according to the conventional Ministry of Agriculture, Forestry and Fisheries trade standard. is there. Another object of the present invention is to easily realize constant weight packaging by only changing the arithmetic control system without changing the mechanical structure of the conventional egg sorting and packaging machine.

(Example) The Example of this invention is described based on drawing. FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a perspective view showing a distribution conveyor of this embodiment, and FIG. 3 is a side view showing a weighing machine of this embodiment.

The present invention, as shown in FIG. Distributor conveyor 2 for distributing weighed egg E to a plurality of packaging places (second
(Illustrated in the figure). A setter 3 for setting a predetermined quantity of one packaging unit corresponding to each constant weight location, a total weight, and an allowable error of the total weight for each constant weight packaging location. A shutter device 4 as a discharging means installed corresponding to each packing place for selectively discharging the chicken eggs E conveyed by the distribution conveyor 2 to each packing place. A pulse generator 5 as a means for generating a speed signal corresponding to the transfer speed of the distribution conveyor 2. Sequentially stores the weight signal from the weighing instrument 1,
An arithmetic unit 20 as a means for receiving the signal from the pulse generator 5 and calculating the current position of the egg E of each weight value. A storage device 21 as a means for storing the number of eggs released by a shutter device 4 provided corresponding to each constant weight packaging place and the total weight for each constant weight packaging place.
The control device 22 outputs a release command to the shutter device 4 based on the data of the storage device 21 and the signal of the calculation device 20 that calculates the current position of the egg E.

As shown in FIG. 3, the apparatus of the present embodiment having the above-mentioned structure is provided with a weighing machine 1 for six rows in order to simultaneously weigh six chicken eggs E conveyed in six rows by the supply conveyor 6. is there. The egg weights of the chicken eggs E measured by the six weighing machines 1 are sequentially stored in the arithmetic unit 20 in the weighing order and the single-row transport order. Once the weighed egg E has been placed with the long axis vertical,
It is gripped by the fingers 8 constituting the distribution conveyor 2 and conveyed in a single row toward the packaging place. Then, the position of this egg E is obtained in synchronization with the movement of the single-row transport conveyor 2, so that a pulse is generated to output the detection signals of the encoder and photosensor attached to the rotary shaft of the conveyor 2. It is input to the arithmetic unit 20 together with the egg egg weight in synchronization with the signal from the container 5. With this, the egg weight and transfer position of each egg is monitored. Then, as shown in FIG. 2, the eggs E being conveyed by the distribution conveyor 2 are shutters corresponding to the individual eggs E of the shutter device 4 corresponding to the corresponding packaging places 7a and 7b as a result of the selection calculation described later. Emitted by. In Fig. 2, two lines are shown as the packing places 7a and 7b for constant quantity and constant weight packing, but other than this, as a packing place for packing unselected eggs E by grade as usual. Lines are omitted. Although FIG. 1 is a block diagram of this embodiment, the shutter device 4 operates according to a release command from the control device 22. Then, in the control device 22, the predetermined quantity and the total weight of each packaging place 7a, 7b inputted from the setting device 3 and the data of the permissible error thereof and each packaging place 7a, 7b.
Comparing the quantity and weight data of one packaging unit released in the above, the shortage quantity and the shortage weight are calculated, and the egg E corresponding to the egg weight of the selected chicken egg calculated as a result of the calculation is to be released in the packaging. When the chicken E is selected from the eggs E located upstream of the location and the selected egg E is delivered to the corresponding shutter device 4, the shutter of the shutter device 4 is controlled by the control device 22. The release command is output to. By the way, whether or not the egg E has been conveyed to the packaging place is grasped by the arithmetic unit 20.

The order in which the chicken eggs E are specifically selected will be described based on the egg weight table in Table 2 that shows the egg weights of the chicken eggs E that are sequentially measured and transported.

Table 1 is a limit table of the weight in the pack when the number in the pack is NP. When obtaining a mixed pack according to this limit table, for example, if the set weight is calculated as 580 g, the number NP in the pack is the first The lower limit is the weight obtained by subtracting the maximum weight 61g of the highest egg weight to be combined in the mixed pack from the two pieces of the average weight 58g of the set weight 580g, that is, 2 × 58-61 = 55g, and the upper limit is the same. The weight obtained by subtracting the minimum weight 55g of the minimum egg weight to be combined in the mixed pack from the average weight of 2 pieces, ie, 2 x 58-55 = 61g, the egg weight of the first egg in Table 2 is 62.5g. Not done. A fifth egg weight of 59.1 g is selected as the first.

In the case of the second piece, the average weight value of 3 pieces to the maximum egg weight
The lower limit is the weight obtained by subtracting 61 g, that is, 3 × 58-61 = 113 g, and the upper limit is the weight obtained by subtracting the minimum egg weight of 55 g from the average weight of 3 eggs, that is, 3 × 58-55 = 119 g. The range is the total weight limit of the two eggs, so the first selected egg weight 59.1
The weight obtained by subtracting g is the second limit weight.

Therefore, the lower limit is 113-59.1 = 53.9g, and the upper limit is 119-59.
1 = 59.9g, the second 62.6g egg in Table 2 is not selected because it is outside this limit weight range.

Then the third 62.7g is not selected for the second combination for the same reason. The 8th egg, 57.4g, is within the limits and is therefore selected as the second a-pack and added to the combination.

The third limit weight is 54.5g when calculated in the same way as above.
It becomes ~ 60.5g, and it is first checked whether the 1st, 2nd, 3rd, 4th, 6th, and 7th egg weights that were not selected in the previous combination are within this limit weight range. In this case, the weight of both eggs is out of the limited weight range, so that the egg is not selected. Therefore, the next 10th egg of 56.9 g is selected and added to the combination as the third a-pack.

If the fourth range is calculated in the same way as above, it will be 55.6g.
In the range of ~ 61.6g, the seventh 61.5g egg not selected in the previous combination is selected and added to the combination as the fourth a-pack. Then, the same calculation is performed and selection is made to obtain a combination. As shown in the combination order of Table 2, the fifth and sixth combinations are similarly not selected in the previous combination, and the sixth combination is selected. The 52.7 g egg is selected as the fifth and the first 62.5 g egg is selected as the sixth. After doing the same calculation and selecting to obtain a combination, as shown in the combination order in Table 2, the 7th combination is the 14th egg, the 8th combination is the 15th egg, and the 9th. The 18th egg is selected as the eye combination and the 20th egg is selected as the 10th combination as a total of 10 eggs as one packaging unit of a pack. And
The second egg 62.3 when 10 pairs are completed
g, 3rd egg 62.7g, 9th egg 64.0g, 11th egg 65.
7g, 12th egg 60.5g, 13th egg 63.2g, 16th egg 6
Since 3.1g, the 17th egg 61.6g, and the 19th egg 66.0g were out of the combination this time, they are put in the packs of the corresponding grades (L) and (M) as unused eggs of the combination, respectively.

In this example, the packaging place of the combination is taken as an example, and the eggs that are out of the combination are devices for allocating the eggs of the egg weight according to the weight division zone of a single hen egg that is separately determined, and the packaging place is for each grade. Is provided in the.

As another embodiment, there is an apparatus in which one packaging unit is an egg contained in a plurality of packaging containers, and a constant amount of a constant weight is used in order to obtain the egg of this packaging unit. Also in this apparatus, the selection method for the combination can be applied as it is. In addition, the eggs of the target of the selective classification, the device of constant weight with a constant amount of eggs added to the constraint conditions of the arbitrary weight width different depending on each packaging place, for example, the range of eggs that can be selected in one packaging place is S, The range of chicken eggs that can be selected at MS and M at other packaging locations is L and 2L, and the selection method for combination can be applied to the embodiment in which the combination is performed under the constraint condition of the weight width.

In addition, the constant amount / constant weight classification device of the present invention can be applied to a combination of chicken eggs in which a certain arbitrary tolerance is separately set for the constant amount condition.

(Effect of the invention) By using the apparatus of the present invention, in order to change the concept of grade selection in the conventional manner so that one pack is within the set weight range, those in the middle of single-row conveyance for distribution after weighing. Egg weight of each of the eggs is selected and released for each deficient number with respect to the target number N, which is one packaging unit, and the target predetermined weight and the predetermined number or only the predetermined weight is automatically determined. By doing so, it is possible to eliminate the work process of manually replacing the eggs that was carried out for each package by the worker, reduce labor costs, and eliminate the loss due to egg breakage that occurs when the eggs are replaced. did it.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment, FIG. 2 is a perspective view showing a distribution conveyor, and FIG. 3 is a side view showing a weighing machine. 1 ... Weighing device, 2 ... Distribution conveyor 3 ... Setting device, 4 ... Shutter device 5 ... Pulse generator, 6 ... Supply conveyor 7a, 7b ... Packing place, 8 ... Finger 20 ... Calculation Device, 21 ... Addition / storage device 22 ... Control device, E ... Egg

Claims (5)

[Claims] 1. A packaging device for packaging chicken eggs in a predetermined quantity and a total weight having a prescribed tolerance as one unit, and means 1 for weighing each chicken egg, and a plurality of packages of the measured chicken eggs. Means of distributing to place 2
And the means 3 for independently setting the predetermined quantity of one packaging unit, the total weight, and the permissible error for each packaging location, and the means 2 for distributing the eggs to the corresponding packaging location. The discharge means 4 and the means 5 for generating a speed signal corresponding to the transfer speed of the distributing means 2 are sequentially stored, and the measurement signals from the means 1 for measuring each egg are sequentially stored to correspond to the transfer speed. The number of the eggs released by the means 20 for receiving the signal from the means 5 for generating the velocity signal and calculating the current position of the eggs of each weight, and the means 4 for selectively releasing the eggs corresponding to each packing place, And means 21 for adding and storing the total weight, the predetermined quantity and the total weight, and predetermined data of the means 3 for independently setting the permissible error thereof for each packaging location, the number of discharged pieces, and the total weight. For adding and storing 21. Comparing with the data in 21, calculating the shortage quantity and the shortage weight, receiving the signal from the means 20 for calculating the current position of the eggs of each weight, and distributing the means 4 in the means 2 for distributing 4 With respect to the eggs located on the more upstream side, while selecting the above-mentioned deficient quantity and hen's eggs that satisfy the deficient weight,
A constant amount and constant weight classification device for chicken eggs, which has a calculation control means 22 for calculating the current position of the selected chicken egg and outputting a discharge command to the discharging means 4 when the corresponding discharging means 4 is reached. . 2. The eggs according to claim 1, which are not selected as the most downstream packaging place, are placed in a plurality of packaging places according to respective egg weights according to a separately defined weight division zone of a single egg. Classification, constant amount of chicken eggs to be released, constant weight classification device. 3. A device for classifying a constant amount of chicken eggs and a constant weight, wherein one packaging unit according to claims 1 and 2 is set as a total of a plurality of containers. 4. Eggs which are subject to selective classification according to claims 1, 2, and 3 and which are subjected to a constraint condition of an arbitrary weight range which is different depending on each packaging place. Constant quantity, constant weight classification device. 5. Claims 1, 2, 3,
A constant amount and constant weight classification device for eggs, which sets a certain arbitrary tolerance separately for the constant amount condition in the fourth item.