JP4977496B2 - Weighing device, weighing system, and output method of setting items relating to these - Google Patents

Description

  The present invention relates to a weighing device. More specifically, the present invention relates to a weighing apparatus and a weighing system configured to set and store a large number of operation patterns specified by a plurality of setting items and operate according to the operation patterns, and a method of outputting setting items related to these.

  In a production line for packaged foods and the like, a weighing device such as a combination weighing device or a weight type sorting device is connected to a packaging machine or the like to constitute a series of weighing systems. The objects to be weighed by the combination weighing device are discharged to a packaging machine and packaged. The weight type sorter detects the weight of the packaged object to be weighed and excludes the weight outside the predetermined weight range.

  The weighing device and the weighing system execute a complicated operation pattern according to the type of the object to be weighed and the target weight. Corresponding to complicated operation patterns, a large number of setting items such as motor speed and feeder amplitude are input and stored.

  A weighing device or a weighing system is not always operated with a setting corresponding to only one type of object to be weighed. The target weight of an object to be weighed in one bag is not always constant and is often changed. Weighing and packaging may be performed by switching the type of the object to be weighed and the packaging material in units of several hours. When changing the type or target weight of the object to be weighed, the operation pattern of the weighing device or the weighing system must be changed.

  In order to change the operation pattern, not only the type and target weight of the object to be weighed but also many other setting items must be changed, which is complicated. In order to facilitate the changing work, the high-performance combination weighing device or packaging machine is configured so that a plurality of operation patterns can be set in advance according to the type of the object to be weighed and the target weight. Each operation pattern is given a number (operation pattern number), and a set (program) of setting items is stored in association with each operation pattern number. In such a configuration, the user can change all setting items to appropriate values simply by selecting an operation pattern number. In some systems, the combination weighing device and the packaging machine exchange operation pattern numbers by communication, and if one operation pattern number changes, the other operation pattern number automatically changes.

  A similar technique can be used in the weight sorter. In the weight type sorting device, the operation pattern number data from the combination weighing device, packaging machine, inspection device (metal detector, X-ray foreign matter detector, etc.) installed upstream is received via the communication means. Some automatically switch the operation pattern number.

  For example, Patent Documents 1 to 4 are documents that describe techniques related to setting of a weighing device and a weighing system.

  Japanese Patent Application Laid-Open No. H10-260260 describes a technique for varying the measurement timing, the selection timing, and the like for each type of objects to be weighed in a weight type sorting apparatus that measures many types of objects to be weighed.

  In Patent Document 2, in a weight type sorting apparatus that measures a large number of types of objects to be weighed, batch lengths of objects to be weighed are stored in advance for each type of objects to be weighed, and batches of detected objects to be weighed are stored. A technique is described in which, when the length is longer than the stored batch length, it is determined that the objects to be weighed twice overlap each other, thereby eliminating the objects to be weighed twice.

  In Patent Document 3, in a combination weighing device, setting items are classified into external input parameters and internally generated parameters, and internally generated parameters (corresponding to some of the setting items in FIG. 3) are set based on externally input parameters (corresponding to some of the setting items in FIG. 3). A technique for automatically setting (corresponding to a part of setting items) is described. In such a configuration, it is practically impossible to set all setting items to optimum values by automatically setting internally generated parameters. This is because the characteristics of the objects to be weighed by the high-performance weighing device are extremely diverse, and the optimum values of the setting items differ depending on the characteristics. For example, the input amount to the weighing hopper affects the combination accuracy of the combination weighing device. The amount charged into the weighing hopper is determined by the dispersion feeder strength, the dispersion feeder operation time, the linear feeder strength, and the linear feeder operation time shown in FIG. 3, and their optimum values vary greatly depending on the characteristics of the object to be weighed. Among the characteristics of the objects to be weighed, those having a particularly large influence are specific gravity, adhesion (entanglement between objects to be weighed), and size. If the characteristics of the objects to be weighed are different, the transport amount is different even if the dispersion feeder strength, dispersion feeder operation time, linear feeder strength, and linear feeder operation time are the same. Therefore, it is difficult to calculate the optimum value of each parameter. In general, first, a numerical value that is a certain standard is automatically set, and then an optimum value is obtained by trial and error.

In Patent Document 4, a set item is displayed in a list in the weighing device, and if the set value is the same for the reference type and other types for any set item in the list display, A technique is described in which the arbitrary setting item is not displayed for the product type. In such a configuration, it is possible to easily confirm the set value changed from the standard product type. Therefore, setting errors and omissions can be easily found even if the number of setting items is large. By correcting the setting value, it is possible to prevent final setting errors and omissions.
Japanese Examined Patent Publication No. 62-60948 JP-A-6-198253 Japanese Patent Laid-Open No. 2003-4517 JP 2006-125903 A

  Setting items increase as the weighing device becomes more sophisticated and accurate. Since the setting items influence each other, it is difficult to set all the setting items without contradiction. On the other hand, a user who is a user of a device likes a simple operation. In order to balance high functionality and ease of operation, in a general weighing apparatus, values of setting items are stored in advance for each operation pattern, and a plurality of operation levels are set. By switching the operation level, it is possible to change the range in which the setting of the device can be changed based on the ability or authority of the operator. Switching the operation level is restricted by using a key or a password. Specifically, for example, level 1 to level 3 are set as operation levels. In level 1, the authority to select a specific operation pattern from preset operation patterns and the authority to turn the device on and off are given. At level 2, in addition to the authority at level 1, authority to change the setting value of the setting item in each operation pattern is given. At level 3, in addition to level 2 authority, all authority such as device system change is given. The operator at the end is given only level 1 authority, and can only switch the operation pattern within the range of the operation pattern set in advance and turn the device on and off. If there is no change in the production line after installing the equipment, complicated knowledge and technology are also unnecessary, and therefore it is possible to easily operate with only level 1 authority.

  However, the product market changes from day to day. A user who is a producer must frequently change the value of the setting item of the weighing device, for example, in response to a new type of object to be weighed. In order to meet such needs, level 2 authority is given to engineers who understand the detailed technical contents of the weighing device. An engineer with level 2 authority changes the setting items of the weighing device so as to correspond to, for example, a new type of object to be weighed. However, since the number of setting items usually exceeds several tens to 100, setting errors and omissions are likely to occur, and it is difficult to prevent errors and omissions. As a result of frequent setting errors and omissions, there are problems such as defective products on the market, and production lines being stopped until engineers of weighing device manufacturers correct the setting data.

  The present invention has been made to solve the above-described problems, and is configured so that a large number of operation patterns specified by a plurality of setting items are set and stored and operated according to the operation patterns. It is an object of the present invention to provide a weighing apparatus and a weighing system that can more easily prevent or correct setting errors and leaks, and an output method of setting items related to these.

  The inventor has intensively studied to solve the above problems. As a result, I noticed the following points. Setting items of the weighing device have a certain correlation with specific setting items (for example, combined total weight and speed) if the types of objects to be weighed are the same. Therefore, a table in which other setting items are arranged in ascending order or descending order based on specific setting items is output. In the table, when each set value is not in ascending order or descending order, or when there is a deviation in the interval between the set values, it can be easily found that there is a setting error. If a setting item with an error in setting can be identified, it becomes easy to correct or prevent the error.

  That is, in order to solve the above-described problems, the weighing device of the present invention is a weighing device that can be operated by switching a plurality of operation patterns, and the name of the object to be weighed and the weighing device corresponding to each of the operation patterns. A storage device for storing a plurality of setting items including operation parameters for controlling the operation of the device in association with each other, an output device for outputting a table, and setting items stored in the storage device Based on this, all or some of the setting items corresponding to a plurality of operation patterns having a common object name are included in one row or column per operation pattern, and that row or column is a predetermined operation parameter. And a control device for outputting, via the output device, a table formed so as to be arranged in ascending order or descending order based on the rearrangement operation parameters.

  With such a configuration, it is possible to easily identify a setting item that may have a setting error. Therefore, setting item setting errors and omissions can be more easily prevented or corrected.

  In the weighing device, the rearrangement operation parameter may be a target weight.

  In such a configuration, the operation patterns are arranged in the order of the target weight. There are many operating parameters that have a high correlation with the target weight. By arranging the operation patterns in the order of the target weights, it is possible to more easily prevent or correct setting errors and leaks for various types of operation parameters.

  The weighing device may include a selection device for selecting any one of the plurality of operation parameters as the rearrangement operation parameter.

  In such a configuration, it is possible to arbitrarily set an operation parameter serving as a reference for arranging the operation patterns. By appropriately setting a reference operation parameter, it is possible to change the table in accordance with an operation parameter to be set or prevented from being erroneously set or leaked.

  The weighing device includes a selection device for selecting any one operation parameter excluding the rearrangement operation parameter from a plurality of operation parameters, and the control device includes the row or column via the selection device. The table may be output to include selected operating parameters.

  In such a configuration, the operation parameters included in the table can be arbitrarily changed. Therefore, it is possible to output a table so as to include operation parameters that are desired to prevent or correct setting errors and omissions.

  The weighing device includes an input device, the output device includes a display device, and the control device inputs setting items via the input device in a state in which the table is displayed on the display device. You may be comprised so that acceptance is possible.

  In such a configuration, it is possible to easily prevent setting errors and omissions by adopting a configuration in which the setting items can be corrected while referring to the table.

  In the above weighing device, the storage device mutually includes a plurality of setting items including an object name and an operation parameter so as to correspond to each of the operation patterns and an analysis item for analyzing the operation result of the weighing device. The control device may be configured to output the table so that the row or the column includes at least one analysis item.

  With such a configuration, it is possible to easily identify an operation pattern that is highly likely to have an error in the operation parameter setting value based on the analysis item.

  In the above weighing device, the analysis item may be a parameter selected from the group consisting of operating efficiency, motor step-out error, and zero correction error.

  In such a configuration, it is possible to easily identify an operation pattern that is highly likely to have an error in the setting value of the operation parameter based on the operation efficiency, motor step-out error, or zero correction error.

  The weighing device includes an input device, the output device includes a display device, and the control device inputs setting items via the input device in a state in which the table is displayed on the display device. You may be comprised so that acceptance is possible.

  In such a configuration, setting errors can be easily prevented from being omitted by adopting a configuration in which setting items can be corrected while referring to a table including analysis items.

  The weighing apparatus includes an input device, and the control device receives an input of a setting item corresponding to a new operation pattern via the input device, and an object name corresponding to the new operation pattern; When the operation parameter for sorting is input, a new item is generated based on the setting item corresponding to the already stored operation pattern, the input object name, and the input operation parameter for sorting. Another operation parameter corresponding to the operation pattern may be set automatically.

  In such a configuration, an operation parameter that has not been input is automatically set based on a setting item that has already been input, so that the operation parameter setting operation is simplified. At the same time, since a table including the automatically set operation parameters is output, it is possible to easily determine whether or not the setting value obtained by the automatic setting is an appropriate value.

  The weighing system of the present invention is a weighing system that can be operated by switching a plurality of operation patterns, and controls the name of the object to be weighed and the operation of the weighing device so as to correspond to each of the operation patterns. A storage device for storing a plurality of setting items including the operation parameters in association with each other, an output device for outputting a table, and a name of an object to be measured based on the setting items stored in the storage device Sorting operation parameters such that all or some of the setting items corresponding to a plurality of operation patterns having a common are included in one row or column per operation pattern, and that row or column is a predetermined operation parameter And a control device for outputting a table formed in ascending or descending order based on the output device via the output device.

  With such a configuration, it is possible to easily identify a setting item that may have a setting error. Therefore, setting item setting errors and omissions can be more easily prevented or corrected.

  Also, the output method of the setting item according to the weighing device or the weighing system of the present invention includes a plurality of settings including the name of the object to be measured and the operation parameter for controlling the operation of the weighing device so as to correspond to each of the operation patterns. A step of storing the items in association with each other, and all or a part of the setting items corresponding to a plurality of operation patterns having a common object name based on the stored setting items are stored in one line per operation pattern. Or outputting a table formed so that the rows or columns are arranged in ascending order or descending order based on the sorting operation parameters which are predetermined operation parameters.

  With such a configuration, it is possible to easily identify a setting item that may have a setting error. Therefore, setting item setting errors and omissions can be more easily prevented or corrected.

  The present invention has the above-described configuration and has the following effects. That is, in a weighing apparatus and a weighing system configured to set and store a large number of operation patterns specified by a plurality of setting items and operate according to the operation patterns, it is easier to set errors and omissions of setting items. Can be prevented or corrected.

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

(First embodiment)
The weighing device of the first embodiment is a combination weighing device. FIG. 1 is a schematic diagram showing the configuration of the combination weighing device according to the first embodiment of the present invention.

  In the combination weighing device 100 of the present embodiment, a conical dispersion feeder 11 is provided in the center of the upper portion of the device to disperse the object to be weighed supplied from the external supply device 10 radially by vibration. Around the dispersion feeder 11, linear feeders 12 are provided for feeding the objects to be weighed sent from the dispersion feeder 11 to the respective supply hoppers 13 by vibration. Below the linear feeder 12, a plurality of supply hoppers 13, weighing hoppers 14, and memory hoppers 15 are provided correspondingly and arranged in a circular shape. The supply hopper 13 receives the object to be weighed sent from the linear feeder 12, and when the weighing hopper 14 disposed below it is empty, the gate is opened and the object to be weighed is put into the weighing hopper 14. A weight sensor 19 such as a load cell is attached to the weighing hopper 14, and the weight sensor 19 measures the weight of an object to be weighed in the weighing hopper 14. The weighing hopper 14 is configured so that the objects to be weighed can be selectively discharged to the memory hopper 15 and the collecting chute 16. The memory hopper 15 is disposed obliquely below the weighing hopper 14, and an object to be weighed is inserted from the weighing hopper 14 when empty. A combination of hoppers (hereinafter referred to as discharge hoppers) to be discharged from a plurality of weighing hoppers 14 and memory hoppers 15 is obtained by combination calculation by the control unit 31 (control device), and an object to be weighed from the discharge hopper corresponding to the combination. Is discharged onto the collecting chute 16. The collective chute 16 is provided below the weighing hopper 14 and the memory hopper 15, and a collective funnel 17 is disposed below the collective chute 16. The objects to be weighed discharged from the weighing hopper 14 and the memory hopper 15 are collected on the collecting chute 16 by the collecting funnel 17 and temporarily stored in the collecting hopper 18. In response to a discharge request signal from a packaging machine (not shown), the control unit 31 opens the gate of the collecting hopper 18, and the objects to be weighed are discharged to the packaging machine. Above the dispersion feeder 11, a photoelectric level sensor 20 for detecting the amount of the object to be weighed is provided. The weighing unit 41 (FIG. 2) includes the linear feeder 12 and its vibration control circuit 34 (FIG. 2), the supply hopper 13, the weighing hopper 14, and their gate drive circuit 35 (FIG. 2), the weight sensor 19 and the A / A It has a D conversion circuit 36 (FIG. 2), a memory hopper 15 and its gate drive circuit 37 (FIG. 2). The combination weighing device 100 includes a plurality of weighing units 41.

  The operation setting display 3 is composed of, for example, a touch panel. The operation setting indicator 3 includes an input unit 5 (input device and selection device) for operating the combination weighing device 100 and setting its operation, and a display unit 6 (displaying operation speed, combination measurement value, etc.) on the screen. Output device). The printing unit 4 (output device) is configured by a general printing device such as a printer, and can be operated via the arithmetic control unit 311 by a signal input from an input unit of the operation setting display 3.

  The control unit 31 includes an arithmetic control unit 311 including a CPU and a storage unit 312 including a memory such as a RAM and a ROM. The storage unit 312 stores an operation program, setting items, measurement values, and the like. The calculation control unit 311 executes the operation program stored in the storage unit 312 to perform the above-described control of the supply device 10 and the overall control of the combination weighing device 100 and the combination calculation. In the combination calculation, the weight of the object to be weighed in the weighing hopper 14 is measured by the weight sensor 19, and the obtained weight is used as a measured value of the weighing hopper 14. The weighing value of the weighing hopper 14 is stored in the storage unit 312, and when the object to be weighed in the weighing hopper 14 is put into the corresponding memory hopper 15, the stored weighing value is stored in the weighing hopper 15. Used as a value. One hopper combination is obtained from the plurality of weighing hoppers 14 and the memory hopper 15 so that the total of the weighing values of the objects to be weighed is within the allowable range with respect to the target weight. For example, a plurality of control units 31 may be provided according to the type of control. The control by the control unit 31 may be parallel control.

  FIG. 2 is a block diagram showing an outline of a control system of the combination weighing device according to the first embodiment of the present invention. The control unit 31 of the combination weighing device 100 exchanges signals with the packaging machine 2 (control unit of the packaging machine) via the external I / O circuit 39. The control unit 31 exchanges signals with the operation setting display 3 via the communication circuit 40, receives input via the operation setting display 3, and controls the display contents of the operation setting display 3. The control unit 31 outputs a signal such as data to be printed to the printing unit 4. A signal from the level sensor 20 is input to the control unit 31 via the A / D conversion circuit 33. Based on the input signal, the control unit 31 controls the supply device 10 so that the objects to be weighed on the dispersion feeder 11 are kept at a constant amount. The control unit 31 controls the vibration amplitude and operation time of the dispersion feeder 11 via the vibration control circuit 32. The control unit 31 controls the vibration amplitude and the vibration duration of the linear feeder 12 via the vibration control circuit 34. The control unit 31 controls a stepping motor (not shown) for opening and closing the gates of the supply hopper 13 and the weighing hopper 14 via the gate drive circuit 35. The control unit 31 receives the measurement value of the weight sensor 19 attached to the weighing hopper 14 via the A / D conversion circuit 36. The control unit 31 controls the stepping motor via the gate drive circuit 37 to open and close the gate of the memory hopper 15. The control unit 31 controls the stepping motor via the gate drive circuit 38 to open and close the gate of the collective hopper 18.

  An outline of the operation of the combination weighing device 100 according to the present embodiment configured as described above will be described first. The operation of the combination weighing device 100 is realized by the control of the control unit 31.

  The objects to be weighed are transported above the combination weighing device 100 by the supply device 10 and discharged onto the dispersion feeder 11. The objects to be weighed are further dispersed radially by the vibration of the dispersion feeder 11. The dispersed objects to be weighed are sent to a plurality of supply hoppers 13 arranged in a circle via the linear feeder 12. For each supply hopper 13, when the corresponding weighing hopper 14 is empty, an object to be weighed is supplied from the supply hopper 13 to the corresponding weighing hopper 14. For each weighing hopper 14, when the corresponding memory hopper 15 is empty, an object to be weighed is fed from the weighing hopper 14 to the corresponding memory hopper 15. The control unit 31 determines a discharge hopper from the weighing hopper 14 and the memory hopper 15 by combination calculation, and discharges the objects to be weighed from the discharge hopper to the collecting chute 16. The objects to be weighed slide down on the collecting chute 16, are collected by the collecting funnel 17, and are temporarily stored in the collecting hopper 18. When the discharge request signal is input from the packaging machine 2, the control unit 31 opens the gate of the collecting hopper 18 and discharges the objects to be weighed to the packaging machine 2. At the same time, the control unit 31 outputs a discharge signal to the packaging machine. The packaging machine 2 fills and packs the objects to be weighed discharged from the combination weighing device 100 while manufacturing the bags. The packaging machine 2 seals the upper end of the bag filled with the objects to be weighed and the lower end of the next bag based on the discharge signal input from the combination weighing device 100.

  In the combination weighing device 100, in order to perform the above-described operation, it is necessary to set a large number of setting items including parameters for controlling the operation of the weighing device (hereinafter referred to as operation parameters) and the names of objects to be weighed. is there. In the combination weighing device 100, an operation pattern is set for each difference depending on the type of the object to be weighed and the target weight. Each operation pattern is given a number (operation pattern number). The storage unit 312 stores the setting value of each setting item (which may be numerical data or character data) in association with the operation pattern number. Setting items are set via the input unit 5 of the operation setting display 3 based on the control of the control unit 31.

  FIG. 3 is a table showing an example of main operation parameters and set values related to the combination weighing device according to the first embodiment of the present invention.

  The operation parameters in this embodiment will be briefly described. The target weight is a target weight (combination target weight) of an object to be weighed per time discharged from the combination weighing device 100. The upper limit allowable weight is a value for determining the maximum weight allowed as the total weight of the objects to be weighed per time (combined total weight). The maximum allowable weight is the sum of the target weight and the upper limit allowable weight. The minimum weight allowed is the target weight. The speed is the number of bags (packs) in which the discharged objects to be weighed are packed by a packing machine in one minute (the number of discharges per minute). The automatic zero correction interval is a time interval at which the zero value correction of the measurement value of the weight sensor 19 is performed. The dispersion feeder strength is a value (% with respect to the maximum amplitude) corresponding to the vibration amplitude of the dispersion feeder 11. The linear feeder strength is a value corresponding to the vibration amplitude of the linear feeder 12 (% with respect to the maximum amplitude). The distributed feeder operation time and the linear feeder operation time are vibration times of the dispersion feeder 11 and the linear feeder 12, respectively. The supply hopper motor pattern, the weighing hopper motor pattern, the memory hopper motor pattern, and the collective hopper motor pattern are drive patterns of stepping motors that drive the gates of the respective hoppers. The set value (1, 2, 3) of the motor pattern indicates a drive pattern identification number set in advance for each stepping motor. The operation mode of the opening operation and the closing operation of each hopper gate is determined according to the driving pattern of the stepping motor. The supply hopper opening time, the weighing hopper opening time, the memory hopper opening time, and the collecting hopper opening time are times from when the gates of the respective hoppers are completely opened to when they start to close. The supply hopper open delay time, weighing hopper open delay time, memory hopper open delay time, and collective hopper open delay time are respectively for the supply hopper, weighing hopper, memory hopper, and collective hopper after receiving a discharge request signal from the packaging machine. This is the delay time until the gate opening operation is started. The stabilization time is from the start of the opening operation of the gate of the supply hopper 13 in order to load an object to be weighed into the weighing hopper 14 until the control unit 31 acquires the measured value of the weight sensor 19 as the measured value for the combination calculation. Is the waiting time. The stabilization time is set in order to measure the exact weight of the object to be weighed put into the weighing hopper by the weight sensor 19. The discharge signal ON time is the duration of the discharge signal output each time. The discharge signal transmission delay time is a delay time from the start of opening the gate of the collecting hopper until the start of output of the discharge signal. These setting items are merely examples, and there are actually a large number of setting items such as tens or hundreds.

  Hereinafter, a table of setting items, which is a feature of the combination weighing device 100, will be described. This table is created by referring to the value of the setting item stored in the storage unit 312 by the control unit 31, and is output via the output device.

  FIG. 4 is a diagram illustrating an example of a table of setting items displayed on the operation setting display 3 in the combination weighing device according to the first embodiment of the present invention. As shown in FIG. 4, in the table of setting items displayed on the operation setting display 3, all or a part (display items) of setting items corresponding to a plurality of operation patterns having a common name of the object to be weighed are displayed. Ascending or descending order (figure 4) based on the sorting operation parameter (target weight in FIG. 4) so that the motion pattern is included in one row or column (row in FIG. 4) and the row or column is a predetermined motion parameter. 4 are arranged in ascending order). The output of the table may always be performed automatically, or may be performed due to the operation of the input unit 5 by the user. A plurality of operation patterns can be set (300 pieces in FIG. 4), and operation patterns having a common name of objects to be weighed are grouped and arranged continuously. In FIG. 4, the display items are the name of the object to be weighed, the target weight, and the linear feeder strength.

  In the table of FIG. 4, the first to third rows display display items corresponding to operation patterns when weighing an object to be weighed with a product name (1) (for example, potato chip). Each setting item has a line for each operation pattern, and each line is arranged in ascending order based on the target weight. Hereinafter, a parameter setting method in the combination weighing device 100 will be described with reference to FIG.

  In principle, in the combination weighing device 100, the linear feeder strength is substantially proportional to the amount charged into the supply hopper 13, and the amount charged into the supply hopper 13 is substantially proportional to the target weight. Therefore, the linear feeder strength should be approximately proportional to the target weight. On the other hand, in the table of FIG. 4, although the target weight increases from the first to the third row at equal intervals of 100 g, 200 g, and 300 g, the linear feeder strength is 40, 40, and 50. Feeder strength does not increase at regular intervals. If such a display is seen, the user can easily know that there is a high possibility that the linear feeder strength has a setting error in the operation pattern displayed in the second row. With this configuration, the combination weighing device 100 can more easily prevent or correct setting item setting errors and leaks in a weighing device in which a large number of operation patterns specified by a plurality of setting items are set and functioned. it can. Needless to say, if there is an error in the input of the name of the object to be weighed, the names of the objects to be weighed in the adjacent rows or columns will be different.

  In the combination weighing device 100, even when a new operation pattern is set, the display items are arranged in ascending order or descending order based on the target weight for each operation pattern for the operation patterns having the same name of the object to be weighed. . With this configuration, the combination weighing device 100 allows the user to easily check whether there are any errors or omissions in the setting item settings.

  In the present embodiment, the table is displayed on the operation setting display 3 based on the control of the control unit 31. The table may be printed via the printing unit 4 based on the control of the control unit 31.

  In the above description, the target weight is the sort operation parameter. However, it is arbitrary which sort of operation parameter is used as the sort operation parameter. The rearrangement operation parameter may be selected from the plurality of operation parameters by the user via the input unit 5. Since the rearrangement operation parameter serves as a reference in ascending order or descending order, it is preferably a parameter whose set value is a numerical value.

  Modification of the setting item may be accepted via the input unit 5 in a state where the table is displayed. The configuration may be such that the user can directly write the setting items to the table while checking the table. The configuration may be such that when a user selects a specific setting item while checking the table, a new window opens and the setting item can be corrected. By adopting a configuration in which the user can modify the setting item while referring to the table, setting errors and omissions can be easily prevented.

  FIG. 5 shows each setting item before and after a new operation pattern is set when the order of storage areas in the storage device corresponds to the display order in the combination weighing device according to the first embodiment of the present invention. FIG. 6 is a diagram illustrating an array in the storage device, in which (a) is an array before a new operation pattern is set, and (b) is an array after a new operation pattern is set. The order of the storage areas in the storage device corresponds to the display order. As shown in FIG. 5A, as a new operation pattern, an operation pattern in which the name of the object to be weighed is the product name (1) and the target weight is 200 g, and an object name to be weighed is the product name (2). An operation parameter is input so as to correspond to an operation pattern having a target weight of 100 g. Then, as shown in FIG. 5B, the storage area corresponding to each operation pattern in the storage unit 312 is changed by the control unit 31. Specifically, setting items corresponding to each operation pattern are re-stored in the storage unit 312 in the order of the target weight for each name of the object to be weighed. If the order in the storage device is sequentially updated, there is no need to rearrange the display.

  The order of display in the table does not necessarily correspond to the order of storage areas in the storage device (for example, the address number of the memory address). Each item may be stored in the address space of the memory in the same order as the table. The address at which the setting value is stored may not be changed, and the arrangement may be adjusted based on the setting value of each item at the display stage. Since it is not necessary to update the order in the storage device each time a new operation pattern is set, the operation is simplified.

  In FIG. 4, the table is described so as to include all the operation patterns, but it is not always necessary that all the operation patterns are included in one table. Only some operation patterns may be included in the table. The operation patterns included in the table may be selected via the input unit 5 by the user.

  Which of the setting items is included in the table may be determined in advance. Which setting items are included in the table may be appropriately determined based on the types of operation parameters that need to be adjusted. The display item may be selected via the input unit 5 by the user.

  The weighing device of the present embodiment is not limited to the combination weighing device, and may be another weighing device (for example, a weight sorting device). Any weighing device may be used as long as it can set a plurality of operation patterns specified by a plurality of setting items according to the type, target weight, speed, and the like of the object to be weighed. Needless to say, the present invention is also applicable to a weighing system in which a plurality of devices (for example, a weighing device, a packaging machine, a metal detector, and a weight sorting device) are combined.

[Modification 1]
In this modified example, when a user inputs an object name and a target weight (sorting operation parameter) when inputting a new operation pattern, the object name is changed based on the control of the control unit 31. A table formed so that display items corresponding to a plurality of common operation patterns are included in one row per operation pattern and the rows are arranged in ascending order based on the target weight is displayed on the display unit 6 or the printing unit. 4 is output.

  FIG. 6 is a diagram illustrating an example of a table of setting items displayed on the operation setting display 3 in the combination weighing device according to the first modification of the first embodiment of the present invention. In the figure, as a new operation pattern, the name of the object to be weighed is the product name (1) and the target weight is 250 g. When the two items are input, the table displayed on the operation setting display 3 is automatically updated under the control of the control unit 31.

  In this modification, when an operation parameter other than the sorting operation parameter is input for a new operation pattern, the user refers to the value of the operation pattern before and after in ascending or descending order, and the input operation parameter It is possible to easily determine whether the value of is appropriate. If no operation parameter other than the sorting operation parameter is input for the new operation pattern, the user can easily determine the value of the operation parameter to be entered by referring to the values of the operation pattern before and after in ascending or descending order. Can be determined.

  When a new operation pattern is input, operation parameters that have not yet been input may be displayed as a table together with operation parameters of other operation patterns, and input of the operation parameters may be accepted at the same time. The configuration may be such that the user can directly input operation parameters to the table while checking the table. If the user selects a specific operation parameter while checking the table, a new window may be opened to input the operation parameter. In any configuration, the user can easily input the operation parameters with reference to the operation parameters of the operation patterns before and after in ascending or descending order.

[Modification 2]
In the second modification, the parameters stored in the storage unit 312 include analysis items in addition to setting items. The analysis item is a parameter for analyzing the operation result, and is obtained as a result of operating the weighing device. The analysis item is a standard for, for example, malfunction. Examples of analysis items in the present embodiment include operating efficiency, motor step-out error, and zero correction error.

  “Operating efficiency” refers to the ratio of the speed during actual operation to the set speed (for example, the number of discharges per minute). For example, when the discharge is set to be performed 100 times per minute, if the discharge is performed only 90 times per minute during actual operation, the operation efficiency is 90%. The control unit 31 calculates “driving efficiency” at a predetermined timing and stores it in the storage unit 312. “Operating efficiency” is displayed on the display unit 6 or printed by the printing unit 4 as necessary. As a cause of the operating efficiency being less than 100%, there is a possibility that the set measuring speed itself is incorrect. As another cause, there is a possibility that the supply speed in the main feeder or the linear feeder is insufficient. As another cause, there is a possibility that many motor out-of-step errors (described later) and zero correction errors (described later) occur and normal operation cannot be sufficiently performed. In the combination weighing device 100, it is possible to search for the cause of the low operating efficiency by comparing the operating efficiency obtained in the actual operation with other parameters (setting items and analysis items). . Setting items such as speed can be adjusted so that driving efficiency is improved.

  “Motor step-out error” refers to the following error. In the combination weighing device 100, a stepping motor is used to open and close the hopper gate. Since a stepping motor is operated by open loop control in principle, there may be a difference between the motor position (angle) on control and the actual motor position (angle). Such a state is called a “motor step-out error”. When a motor step-out error occurs, for example, the hopper gate is open when it should be closed, and a serious problem occurs such that the object to be weighed falls unintentionally. In the combination weighing device 100, in order to prevent such a situation, it is confirmed whether the actual motor position has returned to the origin at a predetermined timing. If the motor position has not returned to the origin, the fact that a “motor step-out error” has occurred is recorded in the storage unit 312 and a message to that effect is displayed on the display unit 6. At the same time, the motor is further driven to return the motor position to the origin (step-out detection and return to the origin can be performed by a well-known method, and details are omitted). At a predetermined timing, the number and frequency of occurrence of “motor step-out error” are calculated by the control unit 31 and displayed on the display unit 6 or printed by the printing unit 4 as necessary. The motor step-out error is generally caused by insufficient torque of the stepping motor. “Motor step-out error” is closely related to the type of measurement object and setting items. Specifically, for example, when the weight of an object to be weighed per hopper increases, step-out may occur due to overload. A step-out can also occur if the to-be-measured item is highly sticky and a large resistance occurs when the hopper gate is opened. In the combination weighing device 100, setting items such as the opening / closing time of the hopper gate and the operation pattern can be adjusted so that the motor step-out error is less likely to occur.

  “Zero correction error” refers to the following error. In the combination weighing device 100, the tare weight of each weighing hopper (the weight of the weighing hopper when the object to be weighed is discharged) is detected every predetermined time (for example, 1 to 10 minutes), and this is stored as a zero point. . At the time of the weighing operation, the weight of the object to be weighed is detected, the weight obtained by subtracting the tare weight is set as the weight of the object to be weighed that has been thrown into the weighing hopper, and the combination calculation is performed using this as the measured value. Although the zero point fluctuates depending on the temperature or the like, adhesion of an object to be weighed to the weighing hopper also has a great influence on the zero point. In particular, when weighing an object to be weighed such as a bag or fried food, fragments of the object to be weighed easily adhere to the weighing hopper, and the zero point is likely to fluctuate. When the weighing object adheres to the weighing hopper, the discharge amount from the weighing hopper becomes less than the calculated discharge amount at the discharge at that time. If the object to be weighed that has adhered to the weighing hopper peels off at the time of subsequent discharge, the discharge amount from the weighing hopper also exceeds the calculated discharge amount. The tackiness of an object to be weighed may change from moment to moment depending on the processing state of the object to be weighed upstream of the combination weighing device (such as the state of the production line), ambient humidity, temperature, and the like. In order to maintain a suitable weighing accuracy, it is desirable to check the ease of attachment of the object to be weighed to the weighing hopper as needed during weighing. In the combination weighing device 100, the zero value stored every predetermined time is compared with the tare weight in the initial state (or in the absence of deposits), and the absolute value of the difference exceeds the predetermined value (for example, ± (When out of the range of 2%) is defined as “zero correction error”. When a “zero correction error” occurs, the fact is stored in the storage unit 312. At the same time, that effect is displayed on the display unit 6. At a predetermined timing, the number and frequency of occurrence of “zero correction error” are calculated by the control unit 31, stored in the storage unit 312, displayed on the display unit 6 as necessary, or printed by the printing unit 4. If the user outputs a zero correction error, the user knows that the object to be weighed may be easily attached. As a general countermeasure when a zero correction error occurs, it is possible to check whether an object to be weighed adheres to the weighing hopper or whether there is no problem in the state of the upstream production line. The combination weighing device 100 can further adjust setting items such as the opening / closing time and speed of the hopper gate so that the objects to be weighed are less likely to adhere to the hopper gate.

  In the present modification, the analysis item is calculated by the control unit 31 based on the result of actually operating the combination weighing device 100 according to each operation pattern. The analysis item is recorded in the storage unit 312 in association with the operation pattern number. An operation pattern number, a set of setting items (object name and operation parameter), and a set of analysis items correspond to one operation pattern.

  FIG. 7 is a diagram illustrating an example of a table of setting items displayed on the operation setting display 3 in the combination weighing device according to the second modification of the first embodiment of the present invention. As shown in the figure, unlike the example of FIG. 4, the first to third rows in this modification example have an operation pattern for weighing an object to be weighed with a product name (1) (for example, potato chip). In addition to the corresponding setting items (object name and target weight), analysis items (operation efficiency, zero correction error, motor step-out error) are displayed. For the zero correction error and the motor step-out error, the cumulative error count (times) and the error occurrence rate (%) in all weighing cycles operated in each operation pattern are displayed side by side. The operation patterns are arranged in ascending order based on the target weight.

  As described above, the operation efficiency indicates the difference between the speed when the combination weighing device 100 is actually operated and the set speed. In principle, the operating efficiency is expected to be almost constant regardless of the name of the object to be weighed and the setting items. When there is an operation pattern with extremely low driving efficiency, the user can estimate that there is a high possibility that there is an error in the setting value of the operation parameter for the operation pattern. In the example of FIG. 7, since the operation efficiency is extremely low at 50% in the second row, it can be determined that there is a high possibility that there is an error in the setting value of the operation parameter for the second operation pattern. According to such a configuration, the user can easily specify an operation pattern that is highly likely to have an error in the setting value of the operation parameter based on the analysis item.

  In particular, it may be difficult to determine whether there is an error that causes a practical problem in the set value only by looking at the operation parameter. In this modified example, the analysis item and the setting item are displayed side by side, so that it is possible to easily determine which operation pattern actually has a problem and adjust the operation parameter.

  Furthermore, an operation parameter that is likely to be erroneous may be recallable. For example, if the product name is the same, the linear feeder strength increases as the target weight increases. If the operation efficiency and the linear feeder strength can be compared, it can be easily determined whether or not the operation efficiency is lowered due to an error in setting the linear feeder strength.

  FIG. 8 is an example of a table created by the control unit 31 based on the table shown in FIG. 7 and displayed on the operation setting display 3 in the combination weighing device according to the second modification of the first embodiment of the present invention. is there. In the present modification, when the user selects a specific setting item and analysis item while the table of FIG. 7 is displayed, a new table is created and displayed so as to include the selected item. As shown in FIG. 8, in the operation pattern corresponding to the product name (1), the linear feeder strength is 30 with respect to the operation pattern having an operation efficiency of 50%, and is extremely low in the parameter set of the same product name. I understand that With this configuration, it is possible to easily specify a setting item having a setting error.

  In FIG. 7, a plurality of analysis items are displayed at the same time, but the analysis item included in the table may be one. For example, a table as shown in FIG. 8 may be displayed from the beginning. However, it is preferable to output a table including a plurality of analysis items in order to more easily identify a setting item having a setting error.

[Modification 3]
In this modified example, when the name of the object to be measured and the operation parameter for automatic setting are input when setting a new operation pattern, the operation parameters other than the operation parameter for automatic setting are automatically set. More specifically, in addition to the newly input object name and automatic setting operation parameter, an operation parameter that has not yet been input is automatically set based on the already set setting items.

  The operation parameter for automatic setting is an operation parameter serving as a reference for automatically setting other operation parameters, and can be, for example, a target weight or a speed. The operation parameter for automatic setting may be the same as or different from the operation parameter for rearrangement. The operation parameter for automatic setting may be selected by the user via the input unit 5 from a plurality of operation parameters.

  FIG. 9 is a diagram illustrating an example of a table of setting items displayed on the operation setting display 3 in the combination weighing device according to the third modification of the first embodiment of the present invention. In the table, parentheses indicate setting items that are automatically set. In FIG. 9, the operation parameter for automatic setting is a target weight, which is the same as the operation parameter for rearrangement.

  In the figure, two operation patterns (target weights of 100 g and 200 g) have already been set for the product name (1), and a new operation pattern is set. When the product name (1) is input (or selected) as the name of the object to be weighed and a target weight of 300 g is input for the new operation pattern, other operation parameters (in the figure, linear feeder) Strength and automatic zero correction interval) are set. In the equation, W is the target weight, A is the linear feeder strength, T is the automatic zero correction interval, and the numbers in parentheses for each variable are the operation pattern numbers.

  As shown in Equation 1 and Equation 2, if the objects to be weighed are the same, other operating parameters can be estimated based on the target weight. In the above formula, other operation parameters are automatically set by the method of linear interpolation. The automatic setting method is not limited to linear interpolation, and can be performed using various known methods. Typically, a general missing value complementing method is preferably used. The operation parameter that has not been input is automatically set, so that the setting of the operation parameter is simplified.

  In this modification, the new operation pattern is displayed as a table created in ascending or descending order based on the rearrangement operation parameters so that all or part of the operation parameters automatically set are included. With this configuration, the user can easily determine whether or not the setting value obtained by the automatic setting is an appropriate value by comparing with other setting values arranged in ascending or descending order. .

  Simultaneously with the display of the automatically set operation parameter, the input of the operation parameter may be accepted. With this configuration, the user can easily correct the operation parameter determined to have an inappropriate setting value.

  Regarding the automatically set operation parameter, it is preferable to indicate that the operation parameter is automatically set by some method (such as parentheses or underline) as shown in FIG. With this configuration, the user can easily discriminate the automatically set operation parameters.

[Modification 4]
FIG. 10 is a flowchart illustrating a setting item output method of the weighing device according to the fourth modification of the first embodiment of the present invention.

  As shown in the figure, in the setting item output method of the present modification, in step S1, the control unit 31 controls the operation object name and the operation parameters for controlling the operation of the weighing device so as to correspond to each of the operation patterns. Are stored in the storage unit 312 in association with each other. When the storage of the setting items is completed, in step S2, all or one of the setting items corresponding to the plurality of operation patterns having the same name of the object to be measured is determined based on the setting items stored in the storage unit 312 by the control unit 31. A table that is formed so that a section is included in one row or column for one operation pattern and that the row or column is arranged in ascending or descending order based on a rearrangement operation parameter that is a predetermined operation parameter. 6 or the printing unit 4. The table to be output and the method for checking and correcting the parameter using the table can be the same as the above description using the table as shown in FIG.

  With this configuration, in the weighing apparatus and the weighing system configured to set and store a large number of operation patterns specified by a plurality of setting items and operate according to the operation patterns, it is possible to prevent errors and omissions in setting items. It can be easily prevented or corrected.

  Needless to say, the present modification can be modified corresponding to the first to third modifications.

  The weighing device and the weighing system according to the present invention and the setting item output method according to the present invention are configured so that a large number of operation patterns specified by a plurality of setting items are set and stored and operated according to the operation patterns. It is useful as a weighing apparatus and a weighing system that can more easily prevent or correct an item setting error or leakage, and a method for outputting setting items related to these.

FIG. 1 is a schematic diagram showing the configuration of the combination weighing device according to the first embodiment of the present invention. FIG. 2 is a block diagram showing an outline of a control system of the combination weighing device according to the first embodiment of the present invention. FIG. 3 is a table showing an example of main operation parameters and set values related to the combination weighing device according to the first embodiment of the present invention. FIG. 4 is a diagram illustrating an example of a table of setting items displayed on the operation setting display in the combination weighing device according to the first embodiment of the present invention. FIG. 5 shows each setting item before and after a new operation pattern is set when the order of storage areas in the storage device corresponds to the display order in the combination weighing device according to the first embodiment of the present invention. FIG. 6 is a diagram illustrating an array in the storage device, in which (a) is an array before a new operation pattern is set, and (b) is an array after a new operation pattern is set. FIG. 6 is a diagram illustrating an example of a table of setting items displayed on the operation setting display in the combination weighing device according to the first modification of the first embodiment of the present invention. FIG. 7 is a diagram illustrating an example of a table of setting items displayed on the operation setting display in the combination weighing device according to the second modification of the first embodiment of the present invention. FIG. 8 is an example of a table created by the control unit based on the table shown in FIG. 7 and displayed on the operation setting display in the combination weighing device according to the second modification of the first embodiment of the present invention. FIG. 9 is a diagram illustrating an example of a table of setting items displayed on the operation setting display in the combination weighing device according to the third modification of the first embodiment of the present invention. FIG. 10 is a flowchart illustrating a setting item output method of the weighing device according to the fourth modification of the first embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Packing machine 3 Operation setting display 4 Printing part 5 Input part 6 Display part 10 Supply apparatus 11 Dispersion feeder 12 Linear feeder 13 Supply hopper 14 Weighing hopper 15 Memory hopper 16 Collecting chute 17 Collecting funnel 18 Collecting hopper 19 Weight sensor 20 Level sensor 31 control unit 32 vibration control circuit 33 A / D conversion circuit 34 vibration control circuit 35 gate drive circuit 36 A / D conversion circuit 37 gate drive circuit 38 gate drive circuit 39 external I / O circuit 40 communication circuit 41 weighing unit 100 combination weighing Device 311 Operation control unit 312 Storage unit

Claims (9)

A weighing device that can be operated by switching a plurality of operation patterns,
A plurality of setting items including the name of the object to be weighed and an operation parameter for controlling the operation of the weighing device and the analysis items for analyzing the operation result of the weighing device are associated with each other so as to correspond to each of the operation patterns. A storage device for storing;
An output device for outputting the table;
Based on the setting items stored in the storage device, all or a part of the setting items corresponding to a plurality of operation patterns having a common object name and at least one analysis item are included in one line per operation pattern. Alternatively, the table is formed so that the row or column corresponding to the object name is continuously arranged in ascending or descending order based on the sorting operation parameter which is a predetermined operation parameter so as to be included in the column And a control device for outputting via the device. The weighing device according to claim 1 , wherein the analysis item is a parameter selected from the group consisting of operating efficiency, motor step-out error, and zero correction error. Operating parameters for sorting is the target weight, the metering device according to claim 1 or 2. The weighing device according to claim 1, further comprising a selection device for selecting any one of the plurality of operation parameters as a rearrangement operation parameter. A selection device for selecting any one operation parameter excluding the rearrangement operation parameter from a plurality of operation parameters;
The control device, the row or column is configured to output the table to include operational parameters selected via the selection device, the metering device according to any of claims 1 to 4 . With input device,
The output device includes a display device,
The measurement according to any one of claims 1 to 5, wherein the control device is configured to accept an input of a setting item via the input device in a state where the table is displayed on the display device. apparatus. With input device,
When the control device receives an input of a setting item corresponding to a new operation pattern via the input device, an input of an object name and a rearrangement operation parameter corresponding to the new operation pattern are received. Based on the setting item corresponding to the already stored operation pattern, the input object name and the input operation parameter for sorting, other operation parameters corresponding to the new operation pattern are automatically set. It is configured to set to, measuring device according to any of claims 1 to 6. A weighing system that can be operated by switching a plurality of operation patterns,
A plurality of setting items including the name of the object to be weighed and an operation parameter for controlling the operation of the weighing device and the analysis items for analyzing the operation result of the weighing device are associated with each other so as to correspond to each of the operation patterns. A storage device for storing;
An output device for outputting the table;
Based on the setting items stored in the storage device, all or a part of the setting items corresponding to a plurality of operation patterns having a common object name and at least one analysis item are included in one line per operation pattern. Alternatively, the table is formed so that the row or column corresponding to the object name is continuously arranged in ascending or descending order based on the sorting operation parameter which is a predetermined operation parameter so as to be included in the column And a control device for outputting via the device. A plurality of setting items including an object name and an operation parameter for controlling the operation of the weighing device so as to correspond to each of the operation patterns, and an analysis item for analyzing the operation result of the weighing device or the weighing system. Storing in association with each other;
Based on the stored setting items, all or a part of the setting items corresponding to a plurality of operation patterns having a common object name and at least one analysis item are arranged in one row or column per operation pattern. Outputting a table formed so that the row or column corresponding to the object name is continuously arranged in ascending order or descending order based on the sorting operation parameter that is a predetermined operation parameter. A method for outputting setting items relating to a weighing device or a weighing system.

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