JP2011133309A - Combination metering apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combination metering apparatus which performs various kinds of processings relating to defective articles. <P>SOLUTION: A determination unit 6 recognizes the weight value of an unloaded article, by subtraction of the total weight of a plurality of articles when a worker unloads the plurality of articles placed on one metering unit 2, in a plurality of metering units 2 from each metering unit 2. Then, the determination unit 6 determines a separate metering unit 2 for placing an unloaded article (non-defective article) to sort the articles to each rank, based on the recognized weight value. Even when an article is one which should be sorted as a non-defective article, the determination unit 6 determines a separate metering unit 2 for placing the article (defective article). A grouping unit 7 groups each of the plurality of metering units 2 into a plurality of groups, based on the ranks (L-size, M-size, S-size, and defective article). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention performs a combination calculation based on the weight of each article obtained by a plurality of weighing units, selects a combination of weighing units so that the obtained combined weight is close to the target weight, and identifies each combination. The present invention relates to a combination weighing device to be displayed.

  Conventionally, combination weighing has been publicly known. For example, Patent Document 1 discloses a weighing device. In the weighing device, the rank of the item having an error weight outside the allowable error, the item having an error weight within the plus-thick tolerance, and the item having an error weight within the minus-thick tolerance is measured. So that the weight or the error weight of the product having the error weight within the allowable error is distributed and stored in the shift register, the combination of the stored values is performed, and the predetermined weight or the weight closest to the predetermined weight is obtained. To do.

  Patent Document 2 discloses a combination weighing device. In the combination weighing device, the weight of the taken-out article is measured by the article weight measurement unit, and the number of articles stored in the article storage unit is less than the combination number n set in advance by the work instruction unit. A storage position is determined by selecting from a small number of article storage units.

  Then, the storage position / weight management unit associates the article weight information with the position information, and manages the article weight information and the weight of the article that has been taken out and is not yet stored. In the calculation unit, the combination of the article storage unit and the article in the non-contained state is set to a preset combination weight m including the total article weight for each article storage unit and the weight of the article in the non-contained state. To decide.

  Furthermore, Patent Document 3 discloses a quantitative weighing method by combination and an apparatus therefor. In the quantitative weighing method and the apparatus based on the combination, the total weight of the container in which the object to be weighed placed on the weighing unit is stored is stored, and the weight value is obtained by taking out one object from there. Calculated. In addition, each weight value in a plurality of containers previously placed in each storage location is combined and calculated by the calculation control unit, and compared with a predetermined quantitative range, the container instruction provided in each storage location By putting the above-mentioned one object to be measured into the container designated by the lamp, the quantitative weighing closest to the target value is performed within the quantitative range by the combination.

Japanese Patent Laid-Open No. 50-50066 JP-A-2005-249406 JP-A-8-240474

  In each of the conventional apparatuses described above, the processing when the article is defective is not disclosed. That is, when an article is a defective product, it is impossible to know the number of articles as the defective product or a ratio to the total number. Thus, each conventional apparatus cannot perform various processes relating to defective products.

  An object of the present invention is to provide a combination weighing device capable of performing various processes relating to defective products.

(1) A combination weighing device according to one aspect is a combination weighing device for manually loading and unloading an article on a weighing pan, and a plurality of weighing units each weighing the weight of an article on a plurality of weighing pans, When a plurality of articles placed on at least one weighing section among a plurality of weighing sections are respectively unloaded from the weighing section, the lowered articles are obtained by subtracting the total weight value of the plurality of articles. And a determination unit that determines another weighing unit on which the dropped article is to be placed as a defective product based on the weight value.

  In the combination weighing device according to one aspect, the weights of the articles on the plurality of weighing dishes are respectively weighed by the plurality of weighing units. When a plurality of articles placed on at least one weighing unit among the plurality of weighing units are each unloaded from the weighing unit by an operator, the total weight value of the plurality of articles is subtracted. The weight value of the article thus received is recognized by the determination unit, and another weighing unit on which the lowered article is to be placed as a defective product is determined based on the weight value.

  In this case, when the article is unloaded from the weighing unit by the operator, the weight value of the article can be recognized by subtracting the total weight value of the weighing unit. In addition, since these articles are placed on at least one weighing unit, for example, when placed on two or more weighing units, the weight values of many articles can be recognized by a simple method.

  In addition, when the weight value of the article is recognized as described above, another measuring unit on which the lowered article is to be placed as a defective product is determined, whereby the defective product can be sorted out from the plurality of articles. Thereby, inferior goods can be reliably excluded in the stage before goods shipment.

(2) The determining unit may determine still another measuring unit on which the lowered article is to be placed as a non-defective product.

  In this case, the dropped article is classified into ranks such as L size, M size, and S size, which should be placed based on the weight value of the article, more specifically, another weighing unit that should be placed as a non-defective product. One of the measuring units is determined by the determining unit. Thereby, a plurality of articles can be sorted based on the size rank.

  In addition, the weight value of the dropped article is recognized by the determination unit, but by placing the article on another weighing unit, the appropriateness of the weight value recognized by the determination unit, that is, weight inspection is performed. be able to.

(3) The combination weighing device calculates the ratio of each measurement result and the ratio between the non-defective product and the defective product with respect to the total weight based on the measurement result of the other measurement unit and the other measurement unit determined by the determination unit. You may further provide a calculation part.

  In this case, for example, the ratio of the weight of articles belonging to each rank to the total weight and the ratio of non-defective products and defective products can be calculated by the combination weighing device, and various processes can be performed in one combination weighing device. it can. In addition, by feeding back information on the ratio between the non-defective product and the defective product to the producer, the producer can pay attention to the selection of the non-defective product and the defective product in the harvesting operation, for example.

(4) The combination weighing device further includes a sorting unit for sorting each of the plurality of weighing units into a plurality of groups in order to sort the articles by size based on the weight value, and the determining unit is based on the weight value Thus, it may be determined on which weighing unit divided into a plurality of groups by the sorting unit.

  In this case, in order to sort the articles by size based on the weight value, each of the plurality of weighing units is divided into a plurality of groups by the dividing unit. In addition, based on the weight value, the determining unit determines which weighing unit divided into a plurality of groups by the sorting unit should be placed with the article. Thereby, for example, the article can be easily sorted for each size rank by placing the article on each weighing unit classified based on the size rank.

(5) When the weight value of the article dropped from the weighing unit is recognized by the determining unit, the combination weighing device visually indicates to which weighing unit belonging to which group the article should be placed or You may further provide the alerting | reporting part alert | reported audibly.

  In this case, when the weight value of the article taken down from the weighing unit is recognized by the determining unit, it is informed about which group the weighing unit belongs to, so that the operator can make a work mistake. Can be suppressed or prevented.

(6) The notification unit may include a plurality of identification display units that are associated with the respective weighing units and are provided in the vicinity of the respective weighing units.

  In this case, the operator can visually recognize clearly on which weighing unit the article should be placed by the identification display unit provided in the vicinity of the weighing unit on which the article is to be placed. Makes it difficult to make mistakes.

It is a perspective view showing a schematic structure of a combination weighing device concerning this embodiment. It is a block diagram which shows the structure of a combination weighing device. It is an upper view of the principal part in a combination weighing device. It is a figure for demonstrating an example of the calculation data produced | generated by the calculation part. It is a flowchart shown about the sorting process of the articles | goods by a control part.

  Hereinafter, a combination weighing device according to an embodiment of the present invention will be described with reference to the drawings.

  1 is a perspective view showing a schematic configuration of a combination weighing device 100 according to the present embodiment, FIG. 2 is a block diagram showing a configuration of the combination weighing device 100, and FIG. FIG.

  As shown in FIG. 1, the combination weighing device 100 manually places and lowers (removes) articles, and includes a main body 1, a plurality of weighing units 2 for weighing articles, and a weighing unit 2. When the weight value of the lowered article is recognized by the determination unit 6 described later, a plurality of identification display units 3 that perform identification display as to which other weighing unit 2 should place the lowered article. And a touch panel 4 that displays various data and is operated by an operator, and a control unit 5 that controls each component.

  Each article is placed on each dish 2a provided on the upper part of each weighing unit 2, so that the weight of each article can be measured by a weight detector (not shown) such as a load cell. .

  The touch panel 4 is a liquid crystal panel, and is configured to display various information on the screen according to control by the control unit 5 and to input predetermined information when an operator touches a predetermined position on the screen. Yes.

  As shown in FIG. 2, the control unit 5 includes a determination unit 6, a sorting unit 7, a calculation unit 8, and a determination unit 9. The control unit 5 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like (not shown). When the CPU executes a program stored in the RAM or ROM, the determination unit 6, the classification unit 7, the calculation unit 8, and the determination unit 9 are functionally realized. Such a program can be installed from a portable recording medium including a recording medium such as a CD-ROM or DVD-ROM in which the program is recorded and a recording medium such as a semiconductor memory.

  The control unit 5 performs processing for controlling each component, for example, processing for displaying the identification display unit 3, processing for outputting various information to the touch panel 4, and the like.

  As shown in FIG. 3, the plurality of weighing units 2 include weighing units 2-1 to 2-12 and are provided on the main body 1 in a form of 2 rows and 6 columns. The weight data of the article W weighed by each weighing unit 2 is transmitted to the control unit 5 via an interface (not shown).

  The identification display unit 3 includes a light emitting unit such as an LED capable of displaying a plurality of types of colors, and is provided in the main body 1 so as to correspond to each of the measuring units 2-1 to 2-12. Further, the touch panel 4 displays, for example, the total weight value of each weighing unit 2 belonging to the groups G1 to G4 described later.

  Here, in this embodiment, a plurality of articles W are placed in the tray C, and the tray C is placed on the weighing unit 2-7. In the tray C, for example, an article W1 distributed to any rank of L size, M size, and S size based on the weight value and an article W2 distributed as a defective product are mixed. The tray C may not be mixed with a defective article W2. Hereinafter, the term “article W” includes the article W1 and the article W2.

  When the plurality of articles W placed on the weighing unit 2-7, which is one weighing unit among the plurality of weighing units 2, are respectively unloaded from the weighing unit 2-7 by the operator, the determining unit 6 The weight value of the lowered article W is recognized by subtracting the total weight value of the plurality of articles W.

  The determination unit 6 determines another weighing unit 2 on which the lowered article W (article W1) is to be placed in order to distribute the articles W to ranks based on the recognized weight value. Even when the article W is to be sorted as a defective product, the determination unit 6 determines another weighing unit 2 on which the article W (article W2) is to be placed.

  Based on the rank (in this embodiment, L size, M size, S size, defective product), the sorting unit 7 includes a plurality (four in this embodiment) of groups G1 to G4. Divide into

  The group G1 is a group for sorting, for example, L-sized articles W1, and is configured by weighing units 2-1, 2-2, and 2-8. The group G2 is a group for sorting, for example, an M-size article W1, and is configured by weighing units 2-3, 2-4, 2-9, and 2-10. The group G3 is a group for sorting, for example, S-sized articles W1, and is configured by weighing units 2-5, 2-11, and 2-12. The group G4 is a group for separating the defective article W2, and is configured by the weighing unit 2-6. In FIG. 3, each group G <b> 1 to G <b> 4 is illustrated in the corresponding identification display unit 3 in order to make the drawing easy to see.

  The identification display unit 3 performs identification display indicating to which group the associated measuring unit 2 belongs. The identification display is performed by a single color or the same color.

  For example, the calculation unit 8 calculates the ratio of the weight of the article W belonging to each rank to the total weight, the ratio of the non-defective product (L size, M size, S size) and the defective product, and the like. Details will be described later.

  The determination unit 9 determines a change in measurement result by each of the plurality of measurement units 2 over time, and the measurement result by the measurement unit 2 belonging to a group different from the group on which the article W is to be placed or removed has changed. If it is determined to be abnormal. In this case, the identification display unit 3 and the audio output device 11 perform display and audio output for notifying the abnormality, respectively. As a result, the operator can reliably recognize a work mistake.

  The height adjusting device 10 can adjust the height of the dish 2a as follows. For example, the height adjusting device 10 unifies the heights of the dishes 2 a in the group for each group divided by the sorting unit 7. Thereby, the worker can clearly recognize the weighing unit 2 belonging to the group on which the article W is to be placed, and can further reduce work mistakes.

  As described above, the audio output device 11 informs the user of the abnormality when an abnormality has occurred, and also provides an audio as to which group W belonging to the weighing unit 2-7 should be placed on the weighing unit 2-7. To inform. In this case, the voice output device 11 outputs, for example, “L size” by voice when the article W dropped from the weighing unit 2-7 is L size. In addition, along with such audio output, identification display by each identification display unit 3 associated with each of the weighing units 2-1, 2-2 and 2-8 belonging to the L size is also performed.

  The combination weighing device 100 according to the present embodiment also has the following functions. The control unit 5 performs a combination calculation based on the weight of each article W obtained by each weighing unit 2, and selects a combination of the weighing unit 2 so that the obtained combination weight is close to the target weight. .

  For example, consider a Mentaiko product with 3 packs. Mentaiko is placed on the plate 2a of each weighing unit 2, respectively. The target weight is 240 g for 3 packs.

  If the total value (combination weight) of each measurement result by the three weighing units 2 selected by the control unit 5 is 240 g, the combination of these three weighing units 2 is a combination equal to the target weight. Moreover, if the total value (combination weight) of each measurement result by the three measurement parts 2 selected by the control part 5 is 235g-245g, for example, the combination of these three measurement parts 2 will be a combination close to a target weight. . In this case, the identification display unit 3 is associated with each weighing unit 2 selected by the control unit 5 as a combination close to the target weight, and performs an identification display indicating that.

  FIG. 4 is a diagram for explaining an example of the calculation data SD generated by the calculation unit 8. As shown in FIG. 4, the calculation unit 8 (FIG. 2) generates calculation data SD based on the measurement result of each measurement unit 2. The calculated data SD is displayed on the touch panel 4.

  The calculation data SD includes, for example, the total number of measured items, the number of each rank such as L size, M size, and S size, the number of defective products, and the ratio of each rank and the number of defective products to the total number (rank ratio). As well as the ratio of non-defective products to defective products (good / bad ratio).

  FIG. 5 is a flowchart showing the sorting process of the articles W by the control unit 5.

  As shown in FIG. 5, the control unit 5 first assigns the weighing units 2 belonging to each group (step S1). In this case, as described above, the control unit 5 causes the weighing units 2-1, 2-2, 2-8 to belong to the group G1 corresponding to the L size, and the weighing units 2-3, 2-4, 2- 9, 2-10 belong to group G2 corresponding to M size, weighing units 2-5, 2-11, 2-12 belong to group G3 corresponding to S size, and weighing unit 2-6 is defective To belong to the group G4 corresponding to. A tray (not shown) for storing the article W1 or the article W2 is provided on each weighing unit 2 belonging to the groups G1 to G4.

  Subsequently, when the operator drops one article W placed on the weighing unit 2-7, the control unit 5 performs the lowering based on the subtraction from the total weight value of the weighing unit 2-7. The weight of the article W thus recognized is recognized (step S2). In this case, if the initial weight total value of the article W placed on the weighing unit 2-7 is, for example, 1000 g, the total weight value when the operator drops one article W is, for example, 980 g. The weight of the lowered article W is 20 g.

  Next, since the weight of the dropped article W is 20 g, the control unit 5 determines that the article W (article W1) is a weighing unit 2-1, 2-2 belonging to the group G1 corresponding to the L size, for example. Each identification display unit 3 associated with 2-8 is turned on (step S3). Along with this, predetermined audio output by the audio output device 11 is also performed. In this case, the worker may place the article W1 unloaded from the weighing unit 2-7 on any of the weighing units 2-1, 2-2, 2-8.

  Next, the control unit 5 recognizes a measurement result by any of the weighing units 2-1, 2-2, and 2-8 on which the operator places the article W1 (step S4). In addition, the measurement result in step S4 is accumulated.

  Next, the control unit 5 determines whether or not the total measurement value of each measurement unit 2 belonging to the groups G1, G2, and G3 has reached a predetermined weight (step S5). Among the measuring units 2 belonging to the groups G1, G2, and G3, if there is the measuring unit 2 whose total measurement value has reached the predetermined weight (Yes in step S5), the control unit 5 determines that the measuring unit 2 has reached the predetermined weight. Are displayed on the identification display unit 3 associated with the (step S6). As a result, the worker visually recognizes the illuminated identification display unit 3, drops the article W <b> 1 from the weighing unit 2 corresponding to the identification display unit 3, and transfers it to the next process. In addition, said predetermined weight is 300 g in the case of L size, for example.

  On the other hand, if there is no measuring unit 2 in which the total measurement value has reached the predetermined weight among the measuring units 2 belonging to the groups G1, G2, and G3 (No in step S5), the control unit 5 performs the above step. The processes from S2 to S5 are repeated.

  A tray (not shown) for storing the article W1 on the weighing unit 2 whose total weight value has reached a predetermined weight is then transferred to a labeling device or the like, and a label is pasted thereon. Note that the article W2 as a defective product placed on the weighing unit 2-6 is disposed of by being transferred to a predetermined position by the operator.

<Effect in this embodiment>
In the combination weighing device 100 according to the present embodiment, a plurality of articles W placed on at least one weighing unit 2 (in the present embodiment, the weighing unit 2-7) among the plurality of weighing units 2 are respectively connected to the weighing unit. When the operator lowers the weight from 2-7, the weight value of the lowered article W is recognized by the determining unit 6 by subtracting the total weight value of the plurality of articles W, and based on the weight value. Thus, another weighing unit 2 on which the dropped article W is to be placed as a defective product is determined.

  As described above, when the weight value of the article W is recognized, the other weighing units 2 that should place the lowered article W as a defective product are determined, so that the defective products are separated from the plurality of articles W. it can. Thereby, inferior goods can be reliably excluded in the stage before goods shipment. Furthermore, in the present embodiment, since these articles W are placed on at least one weighing unit 2, for example, when placed on two or more weighing units 2, the weight values of many articles W can be easily reduced. Can be recognized in a simple way.

  Moreover, in this embodiment, the other measurement part 2 which should mount the articles | goods W dropped from the measurement part 2-7 as a good article is determined by the determination part. Specifically, the determination unit 6 determines which weighing unit 2 is classified into ranks such as L size, M size, and S size, which should be placed based on the weight value of the article W that has been lowered. Thereby, the plurality of articles W can be easily sorted based on the size rank.

  Furthermore, although the weight value of the article W dropped is recognized by the determination unit 6, the appropriateness of the weight value recognized by the determination unit 6 by placing the article W on the other weighing unit 2, that is, Gravimetric inspection can be performed.

  Moreover, in this embodiment, based on the measurement result of the other measurement part 2 determined by the determination part 6, the ratio (rank ratio) of each rank result with respect to the whole weight, and the ratio (good / bad ratio) of a non-defective product and a defective product. Calculation data SD including such information is generated by the calculation unit 8. Thereby, various processes can be performed in one combination weighing device 100. Further, by feeding back the information on the pass / fail ratio to the producer, the producer can pay attention to selection of non-defective / defective products, for example, in the harvesting operation.

  Further, in the present embodiment, each weighing unit 2 is associated with each other, and a plurality of identification display units 3 are provided in the vicinity of each weighing unit 2. Whether the article W should be placed can be clearly recognized by the lighting operation of the identification display unit 3 provided in the vicinity of the weighing unit 2 on which the article W is to be placed. This makes it difficult for the operator to make a mistake.

  Furthermore, in this embodiment, when the measurement result by the measurement unit 2 belonging to a group different from the group where the article W is to be placed or removed is changed, the determination unit 9 determines that an abnormality has occurred. Accordingly, it is possible to reliably detect a case where the operator misidentifies the weighing unit 2 on which the article W is to be placed or the weighing unit 2 on which the article W is to be removed.

<Correspondence between each component of claim and each component of this embodiment>
In the above embodiment, the weighing units 2, 2-1 to 2-12 correspond to the weighing unit, the plate 2a corresponds to the weighing plate, the determination unit 6 corresponds to the determination unit, and the articles W, W1, and W2 It corresponds to an article, the sorting unit 7 corresponds to a sorting unit, the identification display unit 3 corresponds to an identification display unit, the identification display unit 3 and the audio output device 11 correspond to a notification unit, and the combination weighing device 100 performs combination weighing. It corresponds to a device.

<Modification>
In the above embodiment, the article W is placed on one weighing unit 2-7 of the plurality of weighing units 2. However, the present invention is not limited to this, and the article W is placed on the plurality of weighing units 2. May be placed. In this case, if there are a plurality of workers, it is possible to efficiently weigh many articles W by sharing the work of unloading the articles W from each weighing unit 2 on which the articles W are placed.

  Moreover, in the said embodiment, although the structure part which mounts the goods W1 as good goods was made into the measurement part 2, it is not limited to this, For example, articles W1 are attached to the simple container etc. which attached | subjected the number and identified. It is good also as mounting.

  Further, in the above embodiment, the weighing units 2 belonging to the groups G1, G2, and G3 are plural, and the weighing unit 2 belonging to the group G4 is singular. However, the present invention is not limited to this, and the groups G1, G2, The metric unit 2 belonging to G3 may be singular, or the metric unit 2 belonging to group G4 may be plural.

  Moreover, although the said embodiment demonstrated the structure which classify | categorizes the goods W for every rank, such as L size, M size, and S size, it is not limited to this, In the combination weighing | measuring apparatus 100 which concerns on the said embodiment, articles | goods For example, W may be classified for each grade such as A grade and B grade. In this case, the grade of the article W can be grasped by performing image recognition processing as a nondestructive inspection.

  Moreover, the identification display part 3 may be comprised by light emission parts, such as LED which can display multiple types of color as mentioned above, and a predetermined color display is made by allowing the light from a light emission part to permeate | transmit a film etc. It is good also as performing.

  Moreover, the display of the identification display part 3 may be performed by lighting like the said embodiment, and may be performed by blinking, if an operator does not misidentify.

  Furthermore, although one preferable embodiment of the present invention is as described above, the present invention is not limited thereto. It will be understood that various other embodiments may be made without departing from the spirit and scope of the invention. Furthermore, in this embodiment, although the effect | action and effect by the structure of this invention are described, these effect | actions and effects are examples and do not limit this invention.

DESCRIPTION OF SYMBOLS 1 Main body 2, 2-1 to 2-12 Weighing part 2a Dish 3 Identification display part 4 Touch panel 5 Control part 6 Determination part 7 Classification part 8 Calculation part 9 Judgment part 11 Audio | voice output apparatus 100 Combination weighing apparatus G1-G4 Group SD calculation Data W, W1, W2 Goods

Claims (6)

A combination weighing device for manually loading and unloading articles on a weighing pan,
A plurality of weighing units that respectively weigh the weight of articles on the plurality of weighing pans;
When the plurality of articles placed on at least one weighing unit among the plurality of weighing units are respectively dropped from the weighing unit, the total weight value of the plurality of articles is subtracted. A combination weighing device comprising: a determination unit that recognizes a weight value of the article and determines another weighing unit on which the lowered article is to be placed as a defective product based on the weight value.   The combination weighing device according to claim 1, wherein the determination unit determines the further other measurement unit on which the dropped article is to be placed as a non-defective product.   Based on the weighing results of the other weighing units and the other weighing units determined by the determining unit, the calculation unit further includes a calculation unit that calculates a ratio of each measurement result to a total weight and a ratio of non-defective products and defective products. The combination weighing device according to claim 1 or 2. In order to sort the articles by size based on the weight value, further comprising a sorting unit that divides each of the plurality of weighing units into a plurality of groups,
4. The method according to claim 1, wherein the determination unit determines, based on the weight value, which of the weighing units divided into the plurality of groups by the sorting unit should be placed with the article. A combination weighing device according to claim 1.   When a weight value of an article dropped from the weighing unit is recognized by the determining unit, a visual or audible notification as to which group the weighing unit belongs to which the article should be placed The combination weighing device according to claim 4, further comprising a notifying unit.   The combination weighing device according to claim 5, wherein the notification unit includes a plurality of identification display units respectively associated with the weighing units and provided in the vicinity of the weighing units.