JP2007051887A - Combination weighing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combination weighing apparatus capable of improving the operating efficiency. <P>SOLUTION: The apparatus comprises the article weight measurement apparatus 5 for obtaining the weight of the article taken out of the weighing machine 2, based on the variation of weighing data from the weighing machine 2 for weighing the overall weight of a plurality of articles; the storage part 10 for storing the articles; the storage position/weight management part 6 for managing the weight of the article relating to the storage part 10; the combination calculating part 7 for calculating the overall combinations within the prescribed weight range, by calculating the combinations based on the weight of articles stored in each storage part 10, and repeating the processes that the process for determine respective proper combinations, the process for determine one combination among ejection combinations, and in the case, if an article in the ejection combination is not included in the proper amount of combination, one combination from among the proper amount combinations is determined as the ejection combination; and the display 3 for informing the storage part 10 stored with the article of each ejection combination. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a combination weighing device for weighing vegetables, fruits, fish and the like so as to have a predetermined weight for bagging.

  2. Description of the Related Art Conventionally, there is a combination weighing device that weighs a predetermined weight when selling vegetables, fruits, fish, and the like in a bag (for example, see Patent Documents 1 and 2).

Such a combination weighing device includes a plurality of storage units and a weighing scale that collectively measures the total weight of articles to be weighed. Then, when the operator takes out the article from the weight scale and stores it in the storage section, the weight of the article stored in the storage section is obtained based on the amount of change in the total weight before and after storing the article. When the articles are stored in all the storage units, a combination calculation is performed, one combination within a predetermined weight range is obtained, and the storage unit of the combination is notified. The operator repeats the work of taking out articles from the storage unit of the notified combination, performing bagging, etc., and storing the articles into the taken out storage part.
JP-A-63-95234 Japanese Patent No. 3561160

  In the above-described conventional combination weighing device, one combination is obtained by one combination calculation, and each time an operator takes out an article from the storage section of the one combination and performs packaging or the like, the operator enters the storage section of the taken out article. The work efficiency was poor because the following items were stored.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a combination weighing device capable of improving work efficiency.

  In order to solve the above-described problems, a combination weighing device according to the present invention includes a plurality of storage units each storing articles, an article weight measuring unit for obtaining the weight of an article stored in each storage unit, and the article A storage position / weight management unit that associates and manages the weight of the storage unit and the storage unit in which the article is stored, and performs a combination calculation based on the weight of the article stored in each storage unit. A first process for determining all combinations of articles having a weight within a predetermined weight range, and determining each of the combinations as an appropriate combination, and a second process of determining one of all the appropriate combinations as a discharge combination A combination of a process and a third process of repeatedly determining, when there is an appropriate amount combination that does not include an article included in the discharge combination, one of the appropriate amount combinations as a discharge combination It includes a so calculating unit, and a notification unit article of each of the discharge combination determined in the combination calculation unit notifies the receiving unit is housed.

  According to this configuration, a plurality of discharge combinations can be obtained from the result of one combination operation, and the operator stores all the discharge combinations obtained after storing the articles in the storage unit in which the articles are not stored. The operation of taking out the article from the storage unit and carrying out processing such as packaging is repeated. That is, it is possible to continuously store articles in a plurality of storage units in which articles are not stored after continuously repeating a process such as packaging by taking out a plurality of articles of each discharge combination from the storage unit. It becomes possible. Therefore, each time an article of an appropriate amount is taken out and packaging or the like is performed, the work efficiency is greatly improved as compared with the case where the next article is stored in the storage unit for the extracted article.

  Further, the notification means may be configured to sequentially notify the storage units of the articles of the respective discharge combinations. Thereby, the worker may take out the articles of the discharge combination from the storage unit in the order in which they are notified, and perform processing such as packaging.

  In this case, a number is assigned in advance to each of the plurality of storage units, and the notification unit has a smallest number assigned to the storage unit of the articles included in each of the discharge combinations. In order, the storage unit for the articles of the discharge combination may be notified. Thereby, the operator can expect one of the storage units of the articles of the respective discharge combinations that are sequentially notified, and can easily perform the operation of taking out the articles from the storage unit.

  Further, the combination calculation unit may be configured to perform the second and third processes so that the number of the appropriate amount combinations is maximized. Accordingly, more discharge combinations can be obtained from the result of one combination calculation, and the work efficiency can be further improved.

  The present invention has the configuration described above, and has an effect that the working efficiency can be improved in the combination weighing device.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a combination weighing device according to an embodiment of the present invention. This combination weighing device includes a table 1 having a plurality of storage units 10, a weight scale 2, a display 3, and a control device 4.

  In the table 1, a storage position number is assigned to each storage unit 10. FIG. 2 is a diagram showing the storage position number of the table 1. As shown in FIG. 2, the table 1 is divided into, for example, 20 storage units 10 in a matrix, and each storage unit 10 includes “01”, “02”, “03”,. The storage position number is assigned. Each storage unit 10 includes an article detection unit 11 configured by a photoelectric or pressure-sensitive detector. Each article detection unit 11 outputs information indicating the unstored state to the control unit 9 when the article S is not stored in the storage unit 10, and is stored when the article S is stored in the storage unit 10. Is output to the control unit 9.

  A plurality of articles S placed in a container, a transport box, a packing box or the like is placed on the weighing scale 2. The weigh scale 2 measures the total weight of a plurality of articles and outputs weighing data 2a. The control device 4 includes an article weight measurement unit 5, a storage position / weight management unit 6, a combination calculation unit 7, a combination condition setting unit 8, and a control unit 9.

  The article weight measuring unit 5 detects the removal of the article S placed on the weighing scale 2 based on the change amount of the weighing data 2a supplied from the weighing scale 2, and also determines the weight of the removed article S. Ask. The article weight measuring unit 5 determines that 100 grams of the article S has been taken out when the previous weighing data 2a has changed from, for example, 5000 grams to 4900 grams, for example. The article weight measuring unit 5 determines that the article has been removed when the decrease value of the weighing data 2a exceeds the preset article removal determination value. Further, the article weight measuring unit 5 determines that a new article has been replenished on the weighing scale 2 when the weighing data 2a is increased. When the weighing data 2a increases, it is determined that the article S has been taken out when the weight exceeding the article take-out determination value decreases from the increased weight. When the article weight measuring unit 5 detects that the article S has been taken out based on a change in the weighing data 2a, the article weight measuring unit 5 outputs article taking information 5a to the control unit 9 and stores the weight data 5b of the taken out article S in the storage position. -Output to the weight management unit 6.

  The operator who has taken out the article S stores (loads) the taken-out article S in the storage section 10 having the smallest storage position number among the storage sections 10 in which the article S is not stored.

  The control unit 9 determines that the storage of the taken-out article S in the storage unit 10 is completed when the take-out information 5a of the article S is supplied from the article weight measuring unit 5. The storage position / weight management unit 6 temporarily stores the storage position of the article S and its weight in association with each other. Here, in the present embodiment, when the article S is stored in the storage unit 10, the articles S are stored in order from the storage unit 10 having the smallest storage position number among the storage units 10 in which no articles are stored. The storage position / weight management unit 6 determines the storage position number of the storage unit 10 in which the article is not stored from the control unit 9 before the article S placed on the weighing scale 2 is taken out. Is provided, and the storage position of the article S and the weight thereof can be associated with each other.

  In this way, when the articles S are sequentially stored in the uncontained storage units 10 and the articles S are stored in all the storage units 10, the control unit 9 outputs a combination calculation start command to the combination calculation unit 7. Then, the combination calculation is started. Here, the control unit 9 indicates that the articles S have been stored in all the storage units 10, and the number of the storage units 10 that have not been stored first and information on the removal of the articles S from the item weight measurement unit 5. 5a may be recognized by coincidence with the given number of times, or may be recognized when information indicating the storage state is given from all the article detection units 11.

  The combination condition setting unit 8 includes a keyboard for setting the number of combinations of articles S and a combination weight range (predetermined weight range). The operator or the like uses the combination condition setting unit 8 to set the number of combinations and the combination weight range in advance. For example, when a fish fillet is 200 grams in two combinations and sold in a bag, the number of combinations is set to 2, the lower limit of the combined weight range is set to 204 grams, for example, and the upper limit of the combined weight range is set. Set the value to, for example, 196 grams. The set number of combinations, the lower limit value of the combination weight range, and the upper limit value of the combination weight range are temporarily stored in the combination condition setting unit 8 and given to the combination calculation unit 7.

  Note that the setting of the number of combinations can be omitted. When the number of combinations is not set, the combination calculation unit 7 obtains a combination that falls within the combination weight range. Further, by setting a target value of the combination weight, the lower limit value of the combination weight range and the upper limit value of the combination weight range may be automatically set based on a pre-registered calculation formula or the like.

  When the combination calculation start command is input from the control unit 9, the combination calculation unit 7 performs combination calculation based on the storage position / weight data group temporarily stored in the storage position / weight management unit 6, and sets the combination condition All the combinations satisfying the conditions of the number of combinations and the combination weight range set in the section 8 are obtained, the obtained combinations are set as appropriate combinations, and the discharge combination is determined from the appropriate combinations. For example, the storage positions of three appropriate amount combinations are (01, 02), that is, “01” and “02”, (01, 12), that is, “01” and “12”, and (02, 08), that is, “02”. In the case of “08”, if the appropriate combination with the storage position (01, 02) is selected as the discharge combination, only one discharge combination is obtained from the three appropriate combinations, but the storage position is (01, 12). When the appropriate combination of (02,08) is selected as the discharge combination, two discharge combinations are obtained from the three appropriate combination. Here, it is assumed that a discharge combination is selected from among appropriate combinations so that the number of discharge combinations increases. However, the discharge combination is selected in order from the combination weight target value or the lower limit value of the combination weight range. You may make it go. When setting the number of combinations, it is more preferable from the viewpoint of work efficiency described later to select a discharge combination from an appropriate amount combination so that the number of discharge combinations is increased.

  The combination calculation unit 7 outputs the storage position information of all the determined discharge combinations to the control unit 9.

  The control unit 9 causes the display 3 to sequentially display the storage positions of the respective discharge combinations based on the storage position information of the respective discharge combinations. In this case, for example, if the storage positions of the discharge combinations are displayed one by one in order from the smallest storage position number among a plurality of storage positions in each discharge combination, the operator One of the storage units 10 of the articles of each discharge combination sequentially displayed in 3 can be predicted, and the work of taking out the articles from the storage unit 10 can be easily performed, thereby improving workability.

  Examples of display by the display 3 are shown in FIGS. 3 (a), 3 (b), and 3 (c). For example, first, as shown in FIG. 3A, the display 3 displays that an article whose storage position is (01, 12) is selected as the discharge combination. The operator takes out the articles S in the storage unit 10 whose storage position is (01, 12), and wraps them using these articles as commodities. When the article S in the storage unit 10 whose storage position is (01, 12) is taken out, information indicating the non-storage state is output from the corresponding article detection unit 11 to the control unit 9. The control unit 9 recognizes that the article S has been taken out from the storage unit 10 whose storage position is (01, 12) based on the information indicating the non-storage state output from the article detection unit 11 described above.

  Next, the control unit 9 determines whether or not there is an undisplayed discharge combination on the display unit 3. If it exists, the storage position of one discharge combination among the undisplayed discharge combinations is displayed in the same manner. Displayed on vessel 3. For example, as shown in FIG. 3B, the display 3 displays that an article whose storage position is (02,08) is selected as the discharge combination. Similarly to the above, when the article S in the storage unit 10 having the storage position (02,08) selected by the discharge combination is taken out by the operator, information indicating the uncontained state is received from the corresponding article detection unit 11. This is output to the control unit 9, and the control unit 9 recognizes that the article S has been taken out from the storage unit 10 whose storage position is (02,08). Hereinafter, similarly, the control unit 9 sequentially displays the storage positions of all the discharge combinations on the display 3, and recognizes that the article S has been taken out from the storage unit 10 corresponding to the last displayed discharge combination. Then, for example, as shown in FIG. 3C, the display 3 displays a display indicating that the articles S of all the discharge combinations have been taken out. Further, the control unit 9 outputs to the storage position / weight management unit 6 information on the storage positions of all the above-described discharge combinations, that is, the storage position of the storage unit 10 in which the article is not stored.

  When the operator sees the display shown in FIG. 3C and confirms that the articles S corresponding to all the discharge combinations have been taken out, the article S placed on the weighing scale 2 is again displayed. The articles S are taken out and stored in the storage unit 10 in which the articles S are not stored in the order of the storage position number. At this time, as described above, the storage position / weight management unit 6 temporarily stores the storage position of the article S and its weight in association with each other. When the articles S are stored in all the storage units 10, the control unit 9 outputs a combination calculation start command to the combination calculation unit 7 as described above to start the combination calculation. The subsequent operation is also as described above.

  As described above, in the present embodiment, the operator stores the articles S in the storage unit 10 in which the articles S are not stored on the table 1, and then the articles S of all the discharge combinations obtained by the combination calculation unit 7. The operation of packaging and other processing is repeated. That is, after continuously repeating the process of packaging and the like by taking out a plurality of articles S of each discharge combination from the storage unit 10, the articles S are continuously supplied to the plurality of storage units 10 in which the articles S are not stored. Compared with the case where the next article is stored in the storage section of the extracted article each time an appropriate combination of articles is taken out and processed for packaging, etc. Efficiency is improved.

  In the above description, after the articles S are stored in all the storage units 10, the combination calculation unit 7 performs the combination calculation to obtain the discharge combination. However, the articles S are stored in all the storage units 10. Even if not, the combination calculation may be performed to obtain the discharge combination. For example, when the number of the storage units 10 in which the articles S are stored reaches a predetermined combination start number (a plurality less than the total number of the storage units 10), a combination calculation is performed to obtain a discharge combination. May be. In this case, for example, the combination start number is set by the combination condition setting unit 8 and the combination start number is given to the control unit 9. The control unit 9 stores the first storage unit 10 stored first. A combination calculation start command may be output to the combination calculation unit 7 when the sum of the number and the number of times the article S take-out information 5a is given from the article weight measurement unit 5 matches the combination start number. Alternatively, the combination calculation start command may be output to the combination calculation unit 7 when the number of the article detection units 11 to which the information indicating the storage state is output matches the combination start number. Or you may make it output the combination calculation start instruction | command from the control part 9 to the combination calculation part 7 by operation of an operator. For example, a combination start button including a push button switch that outputs a combination start signal to the control unit 9 when the button is pressed is provided near the table 1 and the like, and is output when the operator presses the combination start button. In response to the combination start signal, the control unit 9 may output a combination calculation start command to the combination calculation unit 7.

  In addition, the storage position of each discharge combination is displayed in order on the display 3 to notify the operator, but other methods may be used. For example, a light emitting unit composed of a lamp or LED may be provided in each storage unit 10 so that the light emitting units of the storage unit 10 corresponding to the discharge combination are sequentially turned on. In addition, first, the storage positions of all the discharge combinations are displayed on the display 3, and the display of the recognition of the article S being taken out from the storage unit 10 corresponding to each discharge combination is erased. Good.

  Further, although the articles S are stored in the storage unit 10 in which the articles are not stored in the order of the storage position numbers, the storage order may not be determined. In this case, when the information from the article detection unit 11 is changed from the information indicating the non-storage state to the information indicating the storage state, the control unit 9 stores the article S in the storage unit 10 including the article detection unit 11. The storage position / weight management unit 6 can associate the storage position of the article S with the weight thereof by recognizing the fact that the storage position / weight management unit 6 outputs the storage position information to the storage position / weight management unit 6. is there.

  Moreover, it can also comprise so that the goods detection part 11 may not be provided in each storage part 10. FIG. In this case, for example, a take-out button such as a push button switch that outputs a take-out signal to the control unit 9 when pressed is provided in the vicinity of the table 1 and the storage selected as the discharge combination as shown in FIG. When the positions are displayed in order, the storage position of (01, 12), for example, is shown on the display 3, and the operator takes out the article S in the storage section 10 at the storage position and presses the take-out button. . In response to the take-out signal output when the take-out button is pressed, the control unit 9 may recognize that the article S has been taken out from the storage unit 10 whose storage position is (01, 12). .

  In the present embodiment, a plurality of articles are placed on the weighing scale 2 and their total weight is weighed, and the article weight measuring unit 5 is based on the amount of change in the weighing data 2a from the weighing scale 2. Although it is configured to detect the removal of an article placed on the weighing scale 2 and obtain the weight of the removed article, the weight of the article stored in each storage unit 10 is not limited to this configuration. As long as the configuration is required, other configurations may be used. For example, a configuration in which articles are weighed and taken out one by one by the weighing scale 2 and stored in the storage unit 10 may be used. In this case, assuming that the weighing data 2a output from the weighing scale 2 when one article is placed is the weight of one article, the article weight measuring unit 5 uses the value of the weighing data 2a ( When the value increased from 0 gram) exceeds a preset judgment value, it is determined that the article is placed and is in a weighing state, and the weighing data 2a at that time is stored as the weight data 5b of the article S as it is. What is necessary is just to make it output to the position / weight management part 6 and to output the article removal information 5a to the control part 9.

  INDUSTRIAL APPLICABILITY The present invention is useful as a combination weighing device or the like used when bagging or the like with a predetermined weight of vegetables, fruits, fish and the like.

It is a block diagram which shows the structure of the combination weighing | measuring apparatus of embodiment of this invention. It is a figure which shows the number of the storage position of the table of the combination weighing | measuring apparatus of embodiment of this invention. It is a figure which shows the example of a display of the indicator of the combination weighing | measuring apparatus of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Table 2 Weigh scale 3 Indicator 4 Control apparatus 5 Article weight measurement part 6 Storage position and weight management part 7 Combination calculating part 8 Combination condition setting part 9 Control part 10 Storage part 11 Article detection part

Claims (4)

A plurality of storage units each storing articles;
An article weight measuring unit for determining the weight of an article stored in each of the storage units;
A storage position / weight management unit that associates and manages the weight of the article and the storage unit in which the article is stored;
First, all combinations of articles whose total weight falls within a predetermined weight range are obtained by performing combination calculation based on the weights of articles stored in the storage units, and the combinations are determined as appropriate combinations. A second process for determining one of all the appropriate amount combinations as a discharge combination, and when there is the proper amount combination that does not include an article included in the discharge combination, A combination calculation unit that performs a third process of repeatedly determining one of the discharge combinations as a discharge combination;
A combination weighing device comprising: an informing means for informing the storage unit in which articles of the respective discharge combinations determined by the combination calculation unit are stored.   The combination weighing device according to claim 1, wherein the notification unit is configured to sequentially notify the storage units of the articles of the respective discharge combinations.   Each of the plurality of storage units is preliminarily numbered in order, and the notification means sequentially starts from the smallest number assigned to the storage unit of the articles included in each of the discharge combinations. The combination weighing device according to claim 2, wherein the combination weighing device is configured to notify the storage unit of the article of the discharge combination.   The combination weighing device according to any one of claims 1 to 3, wherein the combination calculation unit is configured to perform the second and third processes so that the number of the appropriate amount combinations is maximized.

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