JP2006029927A - Metering system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a metering system surely and efficiently selecting in rank, combination articles on the basis of the number of articles for a combination article (for example, bag packs) and the weight of the combination article. <P>SOLUTION: The metering system 100 comprises a combinatorial measuring system 1 for carrying out a combination article K within a preset weight range by combining a plurality of articles, and a selection system 22 for selecting in ranks, the combination articles on the basis of the weight of the combination article K and the number of articles P constituting the combination article K. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a weighing system, and more particularly, to a weighing system that can reliably and efficiently rank-sort a combination article based on the weight of the combination article and the number of articles in the combination article.

  2. Description of the Related Art Conventionally, a combination weighing device that collects articles whose weight varies individually within a preset weight range is well known.

  Further, a combination weighing device has been proposed in which an imaging function is added to the combination weighing device, and in addition to the existing weight sorting, an article exceeding a predetermined number range is prevented from being carried out (as conventional example 1). Patent Document 1).

A combination weighing device configured to be able to convert the weight of an object to be measured based on a weight average value of a single article and its standard deviation, and for each target weight range based on the weight of the object to be measured and its converted number. There is also a combination weighing device that sorts objects to be weighed for each target number range (see Patent Document 2 as Conventional Example 2).
JP-A-6-144542 Japanese Patent Laid-Open No. 2003-247883

  By the way, there are some agricultural products that are packed in a mass-market store such as a supermarket that are sorted and sold based on the number and weight of the agricultural products packed there (a typical example of such agricultural products is peppers). In the following, this section will be described using pepper as an example.)

  The size and shape of individual peppers vary, and the weight variation of each pepper is large. For this reason, if the combination weighing apparatus with an imaging function described in the above-mentioned conventional example 1 is applied and the allowable range of the target number of bell peppers in the bell pepper bag pack is narrowed and selected, the target weight of the bell pepper bag pack is inevitably reduced. It is necessary to widen the tolerance, and such weight variations are undesirable for consumers.

  On the other hand, the number of bell peppers per selected pack fluctuates with respect to the packed green pepper pack in which the allowable range of the target weight is appropriately narrowed down by the combination weighing device described in the conventional example 1. And since the product value differs depending on the number of bell peppers present in the bell pepper bag pack, after the sorting operation is performed by manually determining the number of bell peppers in the bag, the bell pepper pack is displayed at the storefront. Will be.

  Here, it seems that it is possible to automatically sort the packed green pepper packs according to the weight of the packed green pepper packs and the converted number of the green pepper packed packs by adopting the method of obtaining the converted number with respect to the weight described in the conventional example 2 above. However, this method only provides an estimated number of converted peppers. For the selection of packed green peppers that pack up to about 10 peppers, which vary in weight, the number of green peppers per packed package of peppers is determined using these converted numbers. It is unfamiliar and difficult to specify.

  The present invention has been made in view of such circumstances, and ranks combination articles reliably and efficiently based on the number of articles and the weight of the combination articles with respect to the combination articles (for example, bag packs). An object is to provide a weighing system that enables sorting.

  In order to solve the above problems, a weighing system according to the present invention includes a combination weighing device that carries out a combination article within a preset weight range by combining a plurality of articles, the weight of the combination article, And a sorting device that rank-sorts each combination article based on the number of articles constituting the combination article.

  Thus, a weighing system that makes it possible to rank-sort the combined articles reliably and efficiently based on the number of articles constituting the combined articles and the weight of the combined articles is obtained. For this reason, it becomes possible to abolish the sorting work of combination articles that has been conventionally relied on manually, thereby eliminating the sorting work mistake and reducing the sorting work cost.

  Here, the weighing system is suitable for sorting bag-packs packed with articles, and this includes a packaging device for carrying out the packs packed with articles constituting the combination article to the outside. The bag pack is ranked by the sorting device based on the weight of the bag pack and the number of articles in the bag pack. In detail, an example thereof includes a weight measuring unit that measures the weight of the bag pack, and a number measuring unit that measures the number of articles in the bag pack, and is obtained by the weight measuring unit. Based on the weight of the packed pack and the number of articles obtained by the number counting means, the packed pack is rank-sorted by the sorting device.

  Further, the combination weighing device includes a weighing hopper that measures the weight of the article when the plurality of articles are combined, and the number of articles in the bag pack is stored in the weighing hopper as the number measuring unit. The weight of the article may be measured based on the number obtained by dividing the weight of the article by the single body weight.

  Another example of the number measuring means is an image processing apparatus that is installed in a transport path of the packaged pack and measures the number of articles by photographing the articles in the packaged pack.

  In addition, an example of the weight measuring means is configured by a weighing conveyor on which the packed pack is placed and a load cell connected to the weighing conveyor.

  A shift memory for storing the number of articles obtained by the number measuring means in association with each of the packed packs, a photoelectric sensor for detecting a position of the packed pack carried into the weighing conveyor, and a control And the control device acquires the weight of the packed pack from the weight measuring means based on the position detection signal of the packed pack output by the photoelectric sensor, and associates it with the packed pack It is also possible to read the number of articles stored in the shift memory from the shift memory and control the rank sorting of the packaged pack by the sorting device based on the weight and the number of the articles.

  Here, when a combination article that is out of a preset weight range by combining a plurality of articles is carried out by the combination weighing device, the package constituting the combination article is packed. Information indicating that the weight of the pack is out of the weight range may be stored in the shift memory. And when the said control apparatus reads the said information from the said shift memory, the presence or absence of the conveyance shift | offset | difference of the packing pack mounted on the said conveyance conveyor based on the weight of the said packing pack measured by the said weight measurement means May be used.

  ADVANTAGE OF THE INVENTION According to this invention, the weighing | measuring system which enables rank selection of a combination article reliably and efficiently based on the number of articles | goods and the weight of a combination article with respect to a combination article (for example, bagging pack) is obtained.

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

  FIG. 1 is a block diagram showing a configuration of a weighing system according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining an example of a multistage sorting apparatus in the weighing system.

  The weighing system 100 mainly includes a combination weighing device 1 that carries out a combination article within a preset weight range by combining a plurality of articles, and a package that packs the combination articles weighed by the combination weighing device 1. A transport conveyor 3 that transports the apparatus 2 and the combined article K (packed pack of articles P constituting the combined article, hereinafter simply referred to as the packed pack K) that has been packed and carried out by the packaging apparatus 2 The weight checker 4 that measures the weight of the packaged pack K conveyed by the conveyor 3 (precisely, the total weight of the articles P in the packaged pack K, and the weight of the packed bag is tared). (Weight measuring means) and an inspection device 20 with an image processing device (a count meter) that inspects the state of the bag pack K and measures the number of the articles P by photographing the item P in the bag pack K Means), and the weight of the bag pack K measured by the weight checker 4 and the number of articles P in the bag pack K measured by the inspection apparatus 20 with the image processing device. And a multistage sorting device 22 (sorting device) for sorting the ranks.

Here, the combination weighing device 1 has n weighing hoppers H ₁ , H ₂ ... H _n . Each weighing hopper H _1, H ₂ ··· H _n is the load cell LC _1, LC ₂ ··· LC each metered by _n hoppers H _1, H ₂ ··· H _n allows measuring the weight of articles P inherent In this way, it is supported by the load cells LC ₁ , LC ₂ ... LC _n .

The output side of each load cell LC ₁ , LC ₂ ... LC _{n is connected to} the input side of the corresponding operational amplifier AMPd ₁ , AMPd ₂ ... AMPd _n via the measurement signal lines a 1, a 2. operational amplifier AMPd _1, AMPd ₂ ··· AMPd _n respectively output side to the input side of the corresponding analog-digital converter _{a / Dd 1, a / Dd} 2 ··· a / Dd n of the analog-to-digital converter the output side of the _{a / Dd 1, a / Dd} 2 ··· a / Dd n to the control device via the I / O circuit 5 (CPU 6), are connected.

  An operation display unit 12 including a screen unit for displaying various display modes and an input unit such as an operation / stop switch and a function key is connected to the CPU 6 via the I / O circuit 5. Note that a storage unit (memory element) 7 such as a ROM or a RAM is connected to the CPU 6 via a bus line (not shown).

Thus, the load cell LC _1, LC ₂ ··· LC _{after n} analog weighing signal generated is amplified by the operational amplifier, an analog-to-digital converter _{A / Dd 1, A / Dd} 2 ··· A / Dd n Is converted into a digital weighing signal and input to the CPU 6 through the I / O circuit 5, whereby the CPU 6 selects the optimum combination of articles P so as to be within a preset weight range. Execute.

  The weight checker 4 is a load cell LCC that measures the weight of the bag pack K that has been carried out of the conveyor 3 and a weighing that places the bag pack K so that the load cell LCC can measure the weight of the bag pack K. And a conveyor V.

  The photoelectric sensor PH is installed in the vicinity of the carry-in side of the weighing conveyor V, and thereby a position detection signal for detecting that the bag pack K carried into the weighing conveyor V has reached its weight-measurable position is photoelectrically detected. The sensor PH outputs to the control device (CPU) 9 via the I / O circuit 8.

  The output side of the load cell LCC is the input side of the operational amplifier AMPC, the output side of the operational amplifier AMPC is the input side of the analog / digital converter A / DC, and the output side of the analog / digital converter A / DC is the I / O circuit. 8 is connected to the CPU 9 via 8.

  An operation display unit 13 including a screen unit for displaying various display modes and an input unit such as an operation / stop switch or a function key is connected to the CPU 9 via the I / O circuit 8.

  Note that a storage unit (memory element) 10 such as a ROM or a RAM is connected to the CPU 9 via a bus line (not shown).

  Thus, the packaged pack K composed of a plurality of packed products is transported by the transport conveyor 3 and sent to the weighing conveyor V of the weight checker 4. Based on the detected output signal, the weight of the bag pack K is measured by the load cell LCC. The analog weighing signal of the bag pack K generated by the load cell LCC is amplified by the operational amplifier AMPC, converted into a digital weighing signal by the analog / digital converter A / DC, and passed through the I / O circuit 8 to the CPU 9. Is input.

Further, the inspection apparatus with an image processing apparatus 20 images an image of the inside of the bag pack K by a metal inspection apparatus or an X-ray foreign substance inspection apparatus that can inspect a foreign object such as a metal piece mixed in the bag of the bag pack K. A processing function is added to enable measurement of the number of articles P in the bag pack K and is connected to the CPU 9 via the I / O circuit 8. Of course, the image processing apparatus and the foreign substance inspection apparatus may be separate apparatuses. In this case, instead of measuring the number of articles P by photographing with the image processing apparatus, the combination weighing apparatus 1 has a number measuring function for measuring the number of articles P when combining a plurality of articles P. It is also possible to provide it. More specifically, immediately before combining a plurality of articles P, divided by the weight of monomer a preset articles weight housed in each of the weighing hoppers H _1, H ₂ · · · H _n, each corresponding weighing hopper H ₁ , the number of articles P stored in H ₂ ... H _n can be calculated. That is, the weighing hoppers H ₁ , H ₂ ... H _n function as the number measuring means.

And among the weighing hoppers H ₁ , H ₂ ... H _n , if the number of articles P in the weighing hopper including the articles P constituting the combination of the packaged pack K is added up, The number of articles P is obtained. The single weight of the article P is an estimated weight per article P, is obtained in advance by appropriate statistical processing corresponding to the weight variation of the article P, and is stored in the storage unit 7. .

According to the combination measuring device 1 capable of calculating the number of such articles P, the weight data of the article P by dividing the weight of the articles P inherent in each weighing hopper H _1, H ₂ ··· H _n at that the weight of monomer There is converted into the number of articles P data, based on the combination calculation of the converted number of the weighing hoppers _{H 1, H 2 ··· H n} , the nearest optimal bag or equal to the target number set in advance It is also possible to obtain the number of combinations of stuffed packs K.

  Further, the CPU 6 and the CPU 9 are connected via serial communication I / O circuits 23 and 24 and the serial communication line 11, and various data can be transmitted and received between them.

Thus, the combination weighing device 1 of the weighing hopper H _1, H ₂ · · · metric weight data and said article P constituting the combination article obtained by H _n hopper H _1, the H ₂ · · · H _n The obtained number data of the articles P is transmitted from the CPU 6 that controls the combination weighing device 1 to the CPU 9 that controls the weight checker 4 via the serial communication line 11, so that the CPU 9 can control the weight data and the number data. It is also possible to perform the rank selection of the packed pack K based on the above.

  Further, the multi-stage sorting apparatus 22 is connected to the CPU 9 via the I / O circuit 21 so that the CPU 9 is based on the weight of the bag pack K and the number of articles P in the bag pack K. The multi-stage sorting device 22 is operated to control rank selection of the packaged pack K.

  More specifically, as shown in FIG. 2, an example of the multi-stage sorting device 22 includes a plurality (six) of swing type sorting devices 22a for rank-selecting the packed pack K, and each swing type sorting device. A plurality of cartons 25 that are disposed below and correspond to the dispensing device 22a and store the packed pack K for each rank are configured.

  The swing plate 22b of the swing type sorting apparatus 22a is supported so as to be swingable by cantilever, and the swing plate 22b on the carton 25 corresponding to the weight of the bag pack K and the number of articles P is packed in the bag. When the pack K arrives, the swing plate 22b is driven to swing by an appropriate drive device (not shown) based on the control signal output from the CPU 9 (the swing plate is at the position indicated by the dotted line in FIG. 2). 22b). As a result, the packed pack K is placed in the carton 25 corresponding to the weight of the packed pack K and the number of articles P, and rank-sorted based on the weight and the number.

  For example, if the bag pack K is a bell pepper pack, as shown in FIG. 2, as an example of the carton 25, rank 1: weight is 150 to 159 g, and the number of articles P is nine. Carton that contains K; Rank 2: Carton that contains a packed pack K having a weight of 150 to 159 g and 10 articles P; Rank 3: The number of articles P having a weight of 150 to 159 g Carton that accommodates 11 packs of packs K; Rank 4: Carton that contains packs of packs K with a weight of 160 to 169 g and 9 articles P; Rank 5: 160 tons of weight 169 g, a carton that houses a packed pack K having 10 articles P; Rank 6: a packed pack K having a weight of 160 g to 169 g and 11 articles P Accommodating carton; Prepare seven carton other than these defined external carton (not shown), the peppers bagging pack can be rank sorted based on this weight and number.

  Next, a configuration of a shift memory that is built in the storage unit 10 and stores the number data of the articles P in the bag pack K will be described.

  FIG. 3 is a diagram illustrating a schematic configuration of a shift memory for storing number data.

The number of articles P in the bag pack K is measured by the weighing hoppers H ₁ , H ₂ ... H _n provided in the inspection device 20 with the image processing device or the combination weighing device 1, and this number data is the weight checker. 4 is sequentially transmitted to the CPU 9 that controls 4, but between the measurement of the number of articles P in the packed pack K and the weight measurement of the packed pack K, the weight checker 4 of the packed pack K is sent. A time shift corresponding to the transport time of inevitably occurs.

  Therefore, after the number of articles P in the packaged pack K is measured and before the weight of the packaged pack K is measured by the weight checker 4, the number of subsequent packaged packs K is measured.

  For this reason, the storage unit 10 connected to the CPU 9 incorporates a shift memory as shown in FIG. 3, and the number data of the articles P in the bag pack K is associated with the measurement order for each memory block. Will be remembered.

  For example, in the shift memory shown in FIG. 3A, when the number data (An + 1) stored in the memory block (1) is read by the CPU 9 and the rank selection process of the corresponding packed pack K is executed. The CPU 9 erases the number data (An + 1) stored in the memory block (1) and shifts the number data (An + 2 to An + 5) stored in the memory blocks (2) to (5). Transition to the state of the shift memory as shown in FIG.

  Next, when the number of articles P in the subsequent bag pack K is measured by the inspection apparatus 20 with an image processing device and the number data (An + 6) is transmitted to the CPU 9, the CPU 9 is shown in FIG. As shown, control is performed to store this number data (An + 6) in the memory block (5) of the shift memory.

  In this way, it becomes possible to cope with a time lag corresponding to the transport time of the packed pack K to the weight checker 4 which occurs between the measurement of the number of articles P in the packed pack K and the weight measurement of the packed pack K. Thus, the number data of the articles P of the packaged pack K can be accurately read from the shift memory.

  According to the weighing system 100 described above, the rank selection of the packaged pack K can be performed reliably and efficiently based on the number of articles P in the packaged pack K and the weight of the packaged pack K. For this reason, it becomes possible to abolish the sorting work of the packaged pack K that has been conventionally relied on manually, thereby eliminating the sorting work mistake and reducing the sorting work cost.

  Next, an operation example of such a weighing system will be described with reference to the drawings.

  When the operation start switch of the operation display unit 13 connected to the CPU 9 is pressed, a plurality of measurement menus are displayed on the display screen, and the rank selection mode of the packed pack K can be started by operating the operation display unit 13. it can.

  When executing this mode as follows, instructions for various input procedures performed by the operator are displayed as messages on the display screen. Further, a rank selection execution program is read from the storage unit 10 into the CPU 9, and this program executes the following series of processes in the CPU 9, thereby causing the weighing system 100 to be executed while being controlled.

  FIG. 4 is a flowchart showing a main processing routine by the weighing system.

  First, the CPU 9 determines whether or not there is a bag pack K on the weighing conveyor V based on the presence or absence of the output signal of the photoelectric sensor PH (step S401).

  If there is no bag pack K on the weighing conveyor V (step S401: No), the CPU 9 determines whether there is a bag pack K in step S401 until the bag pack K is conveyed to the weighing conveyor V. Continue.

  If there is a bag pack K on the weighing conveyor V (step S401: Yes), the process proceeds to the next step, and the CPU 9 obtains the number data of the articles P in the bag pack K from the memory block (1) of the shift memory. Read (step S402).

  Here, the weight of the combination article P combined by the combination weighing device 1 is out of specification (outside the weight range set in advance in the combination weighing device 1, for example, an excessive amount with respect to the target weight range of the combination weighing device 1 If the weight is assumed), a predetermined numerical value (a numerical value that is not normally assumed as the number data, for example, a value of “99” in the case of a green bag) is used so that the CPU 9 can recognize this. Information indicating that it is out of specification is transmitted from the combination weighing device 1 to the shift memory and stored therein.

  Therefore, the CPU 9 determines whether or not the numerical value read from the shift memory is outside the specified range (step S403).

  If the numerical value is a numerical value indicating that the weight is not specified (step S403: Yes), the CPU 9 executes an operation for determining whether or not there is a conveyance deviation of the bag pack K in the conveyance path, as will be described in detail later.

  If the numerical value is not a numerical value indicating that the weight is not specified (step S403: No), the CPU 9 reads the weight data of the packaged pack K output from the weight checker 4 (step S404).

  Thereafter, the CPU 9 executes a rank selection routine for performing rank selection based on the number of articles P in the bag pack K and the weight of the bag pack K (step S405), and then returns to step S401 to continue to the subsequent bag. The same process is repeated for the stuffed pack K.

  Here, the communication operation to the CPU 9 and the writing operation to the shift memory of the number data of the articles P in the bag pack K obtained by the inspection device 20 with the image processing device are shown in the flowchart of the communication processing routine in FIG. Based on the procedure shown, it is repeatedly executed at time intervals (about 5 ms to 10 ms) corresponding to the system clock.

  That is, the CPU 9 attempts to read the number data of the articles P in the packaged pack K via a communication line (for example, a line connecting the inspection apparatus with an image processing apparatus 20 and the I / O circuit 8) (step S501). ).

  Then, the CPU 9 checks the presence / absence of the number data (step S502). If the number data does not exist (step S502: No), the CPU 9 returns to the reading step shown in step S501 and the number data reading operation is performed. Repeat for each time interval above.

  If there is the number data (step S502: Yes), the CPU 9 writes the data in the shift memory built in the storage unit 10 and then returns to the reading step shown in step S501 to read the number data. Repeated every interval.

  On the other hand, the rank selection operation shown in step S405 of FIG. 4 is executed in detail according to the procedure shown in the flowchart of the rank selection processing routine based on weight and number in FIG.

  In the flowchart of FIG. 6, the weight data of the bag pack K obtained by the weight checker 4 is represented by W, and the number of articles P in the bag pack K obtained by the inspection apparatus with an image processing device 20 is represented by C. M1, M2 and M3 (where M1 <M2 <M3) represent the weight thresholds for rank-selecting the packed pack K according to the weight of the packed pack K, and the article P in the packed pack K N1, N2 and N3 (where N1 <N2 <N3) represent the numbers for sorting to classify the packed pack K according to the number.

  First, the CPU 9 determines whether or not the weight of the bag pack K obtained by the weight checker 4 is in the weight range of M1 or more and less than M2 (step S601).

  Here, if the weight is in the weight range of M1 or more and less than M2 (step S601: Yes), the process proceeds to the next number determination step, and whether or not the number of articles P in the packaged pack K is N1. The CPU 9 determines whether or not (step S602).

  If the number is N1 (step S602: Yes), the packaged pack K is set to distribution 1 (step S603), and is accommodated in the corresponding carton 25 by the multistage distribution device 22. .

  On the other hand, if the number is not N1 (step S602: No), the process proceeds to the next number determination step, and it is determined whether or not the number of articles P in the bag pack K is N2 (step). S604).

  If the number is N2 (step S604: Yes), this packaged pack K is set to distribution 2 (step S605), and is accommodated in the corresponding carton 25 by the multistage distribution device 22. .

  On the other hand, if the number is not N2 (step S604: No), the process proceeds to the next number determination step and it is determined whether or not the number of articles P in the bag pack K is N3 (step). S606).

  If the number is N3 (step S606: Yes), the packaged pack K is set in the distribution 3 (step S607) and is accommodated in the carton 25 corresponding thereto by the multistage distribution device 22. .

  On the other hand, if the number is not N3 (step S606: No), the packaged pack K is set to the rank out-of-rank distribution (out-of-standard distribution) (step S608), and the multistage distribution device 22 The carton 25 is accommodated.

  Next, in step S601, if the weight of the bag pack K is not in the weight range of M1 or more and less than M2 (step S601: No), the process proceeds to the next weight determination step, and the weight of the bag pack K is M2 or more. It is determined whether the weight is less than M3 (step S609).

  Here, if the weight is in the weight range of M2 or more and less than M3 (step S609: Yes), the process proceeds to the next number determination step, and whether or not the number of articles P in the packaged pack K is N1. Is determined (step S610).

  And if the number is N1 (step S610: Yes), this bagging pack K is set to the distribution 4 (step S611), and is accommodated in the carton 25 corresponding to it by the multistage distribution apparatus 22. .

  On the other hand, if the number is not N1 (step S610: No), the process proceeds to the next number determination step and it is determined whether or not the number of articles P in the bag pack K is N2 (step). S612).

  If the number is N2 (step S612: Yes), the packaged pack K is set in the distribution 5 (step S613) and is accommodated in the corresponding carton 25 by the multistage distribution device 22. .

  On the other hand, if the number is not N2 (step S612: No), the process proceeds to the next number determination step to determine whether the number of articles P in the bag pack K is N3 (step). S614).

  If the number is N3 (step S614: Yes), the packaged pack K is set in the sorting 6 (step S615), and is accommodated in the corresponding carton 25 by the multistage sorting device 22. .

  On the other hand, if the number is not N3 (step S614: No), this packaged pack K is set to the rank out-of-rank distribution (non-standard distribution) (step S616). The carton 25 is accommodated.

  Next, in step S609, if the weight of the packaged pack K is not in the weight range of M2 or more and less than M3 (step S609: No), the packaged pack K is set to the extra-rank distribution (non-standard distribution). (Step S617), and the multi-stage sorting device 22 accommodates the carton 25 corresponding thereto.

  In this way, the package pack K can be ranked in seven ranks including the distribution sets 1 to 6 and the off-rank distribution.

  Next, when the numerical value corresponding to the number of articles P in the bag pack K is a value outside the weight regulation (step S403: Yes), it is determined whether or not there is a transport deviation of the bag pack K transporting the transport conveyor 3. An example of the operation will be described.

  In order to improve the efficiency of the manufacture of the packed pack K and its rank selection operation, a plurality of packed packs K placed on the transport conveyor 3 shown in FIG. 1 are simultaneously transported at an appropriate distance.

  While such a packaged pack K is being conveyed by the conveyor 3, the packaged pack K is conveyed due to some malfunction of the packaged pack K (for example, a defective seal attached by the packaging device 4). It may be removed from the conveyance path of the conveyor 3. As a result, a deviation (conveyance deviation of the packed pack K) occurs between the packed pack K existing in the transfer path and the corresponding number data stored in the shift memory.

  Therefore, when the weight of the combination article K that is accidentally combined by the combination weighing device 1 is out of the specified range (out of the weight range set in advance in the combination weighing device 1), the procedure of the flowchart shown in FIG. It is possible to determine whether or not there is a deviation in the conveyance of the above-described packaged pack K along S403, Step S406, and Step S407). Of course, the combination weighing device 1 may be controlled by the CPU 9 so that the combination weighing device 1 intentionally has a weight that is outside the specified range with respect to the combination weighing device 1 at an appropriate timing.

  First, if the numerical value read from the shift memory in step S402 is a numerical value indicating that the weight is not defined (step S403: Yes), after the weight data obtained by the weight checker 4 is read (step S406), the next Proceed to the step of determining whether there is a conveyance deviation.

  Here, it is determined whether or not the weight data read in step S406 is out of regulation (step S407).

  If the weight data is not specified (step S407: Yes), it is determined that there is no conveyance deviation of the bag pack K, the process returns to step S401, and the subsequent bag pack K is continuously displayed. The procedure shown in the main processing routine shown in FIG. 4 is executed.

  Although not shown in the figure, the non-weight-specified bag pack K is set in the rank extraordinary distribution (nonstandard distribution), and the corresponding carton 25 is set by the multistage distribution device 22. Will be housed.

  On the other hand, if the weight data is within the specified range (step S407: No), it is determined that there is a transport deviation of the package pack K, and a transport deviation alarm for the package pack K is issued (step S508). Then, a system stop process is executed (step S409).

  After this system stop process, the operation shown in the flowchart of the line abnormality process routine in FIG. 7 is executed.

  First, an operator who has detected a conveyance deviation alarm inputs an appropriate command from the outside, for example, via the operation display unit 13 (step S701).

  Here, the presence or absence of a reset instruction for the shift memory (this reset instruction may be included in the input in step S701) is confirmed (step S702), and if there is this reset instruction (step S872: Yes), The data in the shift memory is reset and erased.

  If this reset command does not exist (step S702: No), this process ends without resetting and erasing the data in the shift memory.

  According to the operation of the weighing system 100 described above, the rank of the bag pack K can be reliably and efficiently selected based on the number of articles P constituting the bag pack K and the weight of the bag pack K.

  According to the weighing system according to the present invention, for example, a rank can be selected for a packaged pack based on the weight of the package pack packed with a plurality of articles and the number of articles packed therein, and rank selection for various combination articles. Useful for functional weighing systems.

It is the block diagram which showed the structure of the measurement system which concerns on embodiment of this invention. It is a figure explaining an example of the multistage sorting device in the measurement system concerning an embodiment of the invention. It is a figure explaining schematic structure of the shift memory for number data storage. It is the flowchart which showed the main process routine by a measurement system. It is the flowchart which showed the communication processing routine by a measurement system. It is the flowchart which showed the rank selection processing routine by the weight and the number by a measurement system. It is the flowchart which showed the line abnormality process routine by a measurement system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combination measuring apparatus 2 Packaging apparatus 3 Conveyor 4 Weight checker 5, 8, 21, 23, 24 I / O circuit 6, 9 Control apparatus (CPU)
7,10 storage unit 11 serial communication line 12 and 13 the operation display unit 20 an image processing apparatus with the inspection device 22 multistage sorter 25 cartons K bagged pack P article V measuring conveyor PH photoelectric sensor H ₁ · · · H _n Weighing Hopper LC ₁ ... LC _n , LCC load cell

Claims (9)

A combination weighing device for carrying out a combination article within a preset weight range by combining a plurality of articles;
A sorting device that rank-sorts each combination article based on the weight of the combination article and the number of articles constituting the combination article;
With weighing system.   A packaging device for carrying out a bag pack packed with articles constituting the combination article to the outside, and the bag by the sorting device based on the weight of the bag pack and the number of articles in the bag pack The weighing system according to claim 1, wherein the pack is ranked. A weight measuring means for measuring the weight of the packaged pack;
A number measuring means for measuring the number of articles in the bag pack,
With
3. The weighing system according to claim 2, wherein the bag pack is ranked by the sorting device based on the weight of the bag pack obtained by the weight measuring unit and the number of articles obtained by the number measuring unit.   The combination weighing device includes a weighing hopper that measures the weight of the article when the plurality of articles are combined, and the number of articles in the packaged pack is stored in the weighing hopper as the number measuring unit. The weighing system according to claim 3, wherein the weighing system is measured based on a number obtained by dividing the weight of the article by the weight of the single unit.   The weighing system according to claim 3, wherein the number measuring unit is an image processing device that is installed in a conveyance path of the bagging pack and measures the number of the articles by photographing the articles in the bagging pack.   The weighing system according to claim 3, wherein the weight measuring unit includes a weighing conveyor on which the bag pack is placed and a load cell connected to the weighing conveyor. A shift memory for storing the number of articles obtained by the number measuring means in association with each of the bagging packs, a photoelectric sensor for detecting the position of the bagging pack carried into the weighing conveyor, a control device, With
The control device acquires the weight of the packed pack from the weight measuring unit based on the position detection signal of the packed pack output by the photoelectric sensor, and stores it in the shift memory in association with the packed pack. The weighing system according to claim 6, wherein the number of the articles is read from the shift memory, and the sorting device performs control so as to perform rank sorting of the bag pack based on the weight and the number of the articles.   When a combination article that is out of a preset weight range by combining a plurality of articles is transported to the outside by the combination weighing device, the weight of the bag pack that packs the articles constituting the combination article is The weighing system according to claim 7, wherein information indicating that the weight is out of the weight range is stored in the shift memory.   When the control device reads the information from the shift memory, the control device determines whether or not there is a shift in the transport of the packed pack placed on the transport conveyor based on the weight of the packed pack measured by the weight measuring unit. The weighing system according to claim 8.

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