JP5475515B2 - Combination weighing device - Google Patents

Description

  The present invention relates to a combination weighing device that collects and discharges a combination of objects to be weighed that are put into a plurality of hoppers and weighed and are combined so as to be within a target weight range.

  For example, as disclosed in Patent Literature 1 and Patent Literature 2 below, the combination weighing device measures and distributes to-be-measured objects having variations in individual weights to a plurality of weighing units, and measures each weighing unit. In this configuration, a combination in which the total weight is within the target weight range is selected from the combinations of the objects to be weighed, and the objects to be weighed selected in the combination are collectively discharged.

  FIG. 9 shows a schematic configuration of this type of general combination weighing device. The combination weighing device 50 of FIG. 9 includes a dispersion supply unit 51 that supplies a target object and disperses it radially, a plurality of stock hoppers 52 arranged in a circumferential shape, and a plurality of weighing hoppers provided below the stock hopper 52. 53 and a funnel-shaped collecting chute 54 provided at the lower part of the weighing hopper 53.

  In the combination weighing device 50, when the objects to be weighed are put into the dispersion supply unit 51, the objects to be weighed are radially dispersed by the central dispersion unit 51a and conveyed to the stock hopper 52 part by the vibration of the conveyance unit 51b. Thereafter, the same amount is dropped into each weighing hopper 53 via the stock hopper 52, and the respective masses are measured. The weighing values in the plurality of weighing hoppers 53 usually have a certain degree of variation. Therefore, the weighing hopper 53 that satisfies a desired mass value (target weight) by appropriately combining a plurality of weighing values obtained by the plurality of weighing hoppers 53. Are selectively operated to drop the objects to be weighed onto the collecting chute 54. A discharge hopper (not shown) is provided at the lowest part of the collecting chute 54, and the objects to be weighed that have dropped from the plurality of weighing hoppers 53 are collected here. On the other hand, for the weighing hopper 53 that is selectively activated and empty, a new object to be weighed is supplied to the weighing hopper 53 from the corresponding conveying unit via the stock hopper 52 and another weighing hopper 53 is provided. The combination by 53 is selected and it prepares for the discharge request signal from a packaging apparatus. Then, when the discharge request signal from the packaging device is dropped onto the packaging device from the discharge hopper, the object to be weighed can be packed in the unit of the target weight, and the above series of operations is repeated each time the discharge request signal is input. Then, the objects to be weighed with the target weight are sequentially discharged.

  Here, the operation timing of each hopper in the combination weighing device 50 described above will be described with reference to FIG. As shown in FIG. 10A, the operation timing of the combination weighing device 50 is synchronized with an activation signal input at an interval of an operation cycle T corresponding to an object to be weighed. As shown in FIG. 5B, the stock hopper 52 has a delay time T1 from the previous opening / closing of the weighing hopper 53 (the stock hopper 52 starts to open after the weighing hopper 53 starts to close and the object to be weighed becomes the weighing hopper 52). Opening and closing at the opening and closing time Ta from the timing delayed by the time until it reaches () until the next object to be weighed is supplied. Further, as shown in FIG. 6C, the time from when the stock hopper 52 starts to open until the object to be weighed is completely discharged to the weighing hopper 53 and measurement is started by the weighing hopper 53 is defined as the charging stable time Tc. . The weighing hopper 53 measures the object to be weighed from the stock hopper 52 at the weighing measurement time Td and then opens and closes at the opening and closing time Tb, as shown in FIG. Discharge.

  Further, as shown in (d) of the figure, the discharge hopper has a delay time T2 from the input of the activation signal (when the top of the object to be weighed reaches the discharge hopper in the shortest time after the weighing hopper 53 starts to open). The discharge hopper is delayed by the maximum delay time until the discharge hopper is completely closed). Immediately after the discharge hopper is opened / closed by the opening / closing time Te, the weighing object is moved to the arrival time width Wa of the measurement object (the weighing object is discharged by the discharge hopper). (The difference between the longest arrival time and the shortest arrival time) and the opening / closing time Tb of the weighing hopper 53, and the next opening / closing operation is started. Thereafter, the same operation is repeated, and a target amount of the object to be weighed is discharged every operation cycle T.

  By the way, when operating this kind of combination weighing device, operation parameters such as opening / closing time, delay time, charging stabilization time, weighing measurement time, arrival time width of each hopper in the operation cycle T depend on the mass of the object to be weighed. The series of operations cannot be simply shortened.

  Therefore, in the past, a test run was performed before starting the weighing operation, and the operation parameters necessary for the weighing operation were manually adjusted while checking the actual discharge operation so that the object to be weighed could be discharged quickly and stably. .

JP 05-099732 A JP 2001-317989 A

  However, in the method of manually adjusting the operation parameters while checking the actual discharging operation during the trial operation described above, individual differences are caused by the adjuster, and accordingly, speed and stability are also varied, and the object to be weighed It was difficult to make settings that make the best use of the ability of the combination weighing device.

  For example, if adjustment is made with emphasis only on high speed, when the weighing hopper or the discharge hopper is not completely closed, the object to be weighed from the intermediate hopper or the weighing hopper arrives, and the object to be weighed or scattered Problems occur. On the other hand, if the adjustment is made with an emphasis only on stability, there arises a problem that the operation speed does not increase. For this reason, the manual adjustment of the operation parameters described above has a problem that a skilled adjustment technique by a knowledgeable person who has sufficiently grasped the capability of the apparatus is required.

  Therefore, the present invention has been made in view of the above problems, and an object thereof is to provide a combination weighing device and a method capable of simplifying the setting work.

In order to achieve the above object, a combination weighing device according to claim 1 of the present invention distributes and supplies the objects to be weighed W having variations in individual weights to a plurality of hoppers 5, A combination of weighing values obtained by weighing the objects to be weighed distributed by the weighing unit 11 is selected to obtain a combination target weight value within a target weight range, and the selected objects to be weighed are collected and discharged. In the combination weighing device 1
An input unit 12 for inputting at least the weighing item information including the mass per one object to be weighed and the combination target weight value;
A setting table in which operation parameters for normally measuring the object to be weighed are associated with the object information of the object to be weighed and the combination target weight value is stored, and input by the input unit The operation parameter associated with the weighing item information of the measured object and the combination target weight value is read from the setting table and determined , and the weighing item information of the weighing object input at the input unit And a control unit 13 for determining an upper limit value of the ability indicated by the number of times the objects are weighed per minute based on the combination target weight value ;
A display unit that displays any one of a plurality of locations on the capability accuracy curve indicating the relationship between the capability and accuracy centered on the determined upper limit value of the capability so as to be selectively set on condition that the upper limit value of the capability is not more than 14 .

The combination weighing device according to claim 2 is the combination weighing device according to claim 1,
The control unit 13 calculates an upper limit value of the allowable combination weight from the combination target weight value input by the input unit 12, and determines the weighing product information of the object to be weighed, the combination target weight value, and the combination weight. Determine the upper limit of the ability based on the upper limit,
The display unit 14, the upper limit value before Symbol sets combined weight and said variable settable displayed to Turkey.

The combination weighing device according to claim 3 is the combination weighing device according to claim 1 or 2,
The control unit 13 displays on the display unit 14 whether or not the combination distribution of the objects to be weighed W exists in the range from the combination target weight value input by the input unit 12 to the upper limit value of the combination weight. It is characterized by displaying the identification.

  According to the present invention, it is possible to perform a weighing operation without performing complicated parameter setting accompanied by a skilled adjustment technique by a knowledgeable person who has sufficiently grasped the capability of a conventional apparatus, and the setting operation can be performed as compared with the conventional one. Simplification can be achieved.

  In addition, if the weighing object information and the combination target weight value of the object to be weighed are input and set, the upper limit value of the allowable combination weight is calculated from the combination target weight value, and the calculated upper limit value of the combination weight is the initial set value. Is displayed. Thereby, the user can variably set the combination target weight upper limit value after confirming the initial set value.

  Furthermore, since whether or not the combination distribution of the objects to be weighed is within the allowable range is displayed, it can be recognized from the display contents whether or not the setting is correctly performed.

  In addition, the ability is selected by selecting any one of a plurality of locations on the ability accuracy curve indicating the relationship between the ability and accuracy centered on the upper limit value of the determined ability on the condition that the upper limit value is less than or equal to the determined upper limit value. The accuracy can be adjusted automatically.

It is a figure showing a schematic structure of a combination weighing device concerning the present invention. 1 is a block diagram showing a system configuration of a combination weighing device according to the present invention. It is a figure which shows an example of the input setting screen of the combination weighing | measuring apparatus which concerns on this invention. It is a figure which shows an example of the input setting screen containing the combination recommendation upper limit of the combination weighing device which concerns on this invention. It is a figure which shows an example of the setting content confirmation screen of the combination weighing | measuring apparatus which concerns on this invention. It is a figure which shows another example of the setting content confirmation screen of the combination weighing apparatus which concerns on this invention. It is a figure which shows an example of the measurement priority adjustment setting screen of the combination weighing device concerning the present invention. It is a figure which shows an example of the setting table used with the combination measuring device which concerns on this invention. It is a figure which shows schematic structure of a combination weighing device. It is a timing diagram which shows the operation state of each hopper of a combination weighing device.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be specifically described with reference to the drawings. 1 is a diagram illustrating a schematic configuration of a combination weighing device according to the present invention, FIG. 2 is a block diagram illustrating a system configuration of the combination weighing device, and FIG. 3 is a diagram illustrating an example of an input setting screen of the combination weighing device. 4 is a diagram showing an example of an input setting screen including the recommended combination upper limit value of the combination weighing device, FIG. 5 is a diagram showing an example of a setting content confirmation screen of the combination weighing device, and FIG. 6 is a diagram of the combination weighing device. FIG. 7 is a diagram showing another example of the setting content confirmation screen, FIG. 7 is a diagram showing an example of the measurement priority adjustment setting screen of the combination weighing device, and FIG. 8 is an example of a setting table used in the combination weighing device. FIG.

  The combination weighing device according to the present invention measures the objects to be weighed with individual weights with a plurality of weighing hoppers, and selects a combination in the target weight range from the combinations of objects to be weighed with the respective weighing hoppers. The selected objects to be weighed are collected and discharged as objects to be weighed within a desired weight range.

(Apparatus schematic configuration)
A schematic configuration of a combination weighing device according to the present invention will be described with reference to FIG. In FIG. 1, the flow of the to-be-measured object W in one certain system is shown among the several systems of hoppers which perform combination weighing.

  As shown in FIG. 1, in the combination weighing device 1 of this example, a dispersion supply unit 2 is provided at a position directly below the dropping position of an object W that is conveyed by a conveying means 8 such as a conveyor in the upper center. The dispersion supply unit 2 includes a dispersion unit 2a that rotates or vibrates, and when the object to be weighed W is supplied, the object to be weighed W is constantly stacked on the dispersion unit 2a with a predetermined angle of repose, The object to be weighed W is supplied while being uniformly distributed around the periphery by the rotation or vibration of the dispersing unit 2a.

  A trough 3 having a driving unit that reciprocates in the transport direction is provided around the dispersion unit 2a. A plurality of troughs 3 are arranged radially at equal angular intervals in the circumferential direction around the dispersion supply unit 2. A stock hopper 4 is arranged below the outer end portion of each trough 3, and the objects to be weighed W are dispersed in each stock hopper 4 when the items to be weighed W drop from the outer end portion of each trough 3. Supplied.

  Below each stock hopper 4, a weighing hopper 5 is arranged, and the stock hopper 4 and the weighing hopper 5 arranged vertically constitute a pair. The objects to be weighed W distributed and supplied to the stock hoppers 4 are supplied to the weighing hoppers 5 that make a pair. The objects W to be weighed supplied to each weighing hopper 5 are weighed by the weighing unit 11 described later for each weighing hopper 5, and the weighing hopper 5 having a combination close to the target weight value based on the weighing signal from this weighing unit is provided. Selected. Then, the objects to be weighed W of the weighing hopper 5 selected for the combination are discharged all at once from the weighing hopper 5 to the funnel type collecting chute 6 and once collected in the discharge hopper 7, then the lower discharge door is opened. The door is discharged to a lower apparatus (for example, a packaging machine).

(System configuration)
FIG. 2 is a block diagram showing a system configuration of the combination weighing device 1. As shown in FIG. 2, the combination weighing device 1 of this example includes a weighing unit 11, an input unit 12, a control unit 13, and a display unit 14.

  The weighing unit 11 is composed of a weight detector such as a load cell, for example, and is provided in each weighing hopper 5. The weighing unit 11 outputs the detected measured value of the object W to the control unit 13 as a weighing signal.

  The input unit 12 includes various keys such as a soft key and a numeric keypad on the display unit 14, for example. The input unit 12 weighs the object W by instructing display of a menu screen (product type registration wizard, ability adjustment setting) on a display screen 14a of the display unit 14 to be described later, and answering questions in an interactive form on the menu screen. Items such as product information, combination target weight value that is the weight of the product, combination target weight upper limit value setting, measurement priority selection setting, and the like are input.

  In addition, as the weighing item information of the objects to be weighed W, for example, the mass of the objects to be weighed W (hereinafter also referred to as single weight), the shape (size / length) of the object to be weighed W, and the properties (cracking) / Flow). In this example, as shown in the contents of “Setting” in FIG. 3, the weight of the weighing item and the ease of rolling the weighing item are described as the weighing item information. Further, the combination target weight value is an ideal weight when the object to be weighed W is finally combined into a product. Furthermore, the combination target weight upper limit value is an upper limit value of the combination weight allowed from the combination target weight value, and can be variably set by the input unit 12.

  The control unit 13 includes a CPU, a ROM, a RAM, and the like, and an operation control program that performs overall control of the entire apparatus so as to execute a predetermined weighing operation in accordance with input settings of the input unit 12. As shown in FIG. 2, the control unit 13 has an internal combination recommended upper limit value calculation unit 13a, a capability determination unit 13b, a parameter determination unit 13c, a measurement priority adjustment unit 13d, a combination calculation unit 13e, and a hopper control unit 13f. The display control means 13g is provided.

  The recommended combination upper limit calculation means 13a calculates the upper limit value of the combination weight allowed from the combination target weight value as the recommended combination upper limit value. Specifically, if the combination target weight value input and set by the input unit 12 is equal to or less than a predetermined reference value, 10% of the combination target weight value or the larger unit weight × 2 is set as the combination target weight value. Add the value and calculate that value as the recommended combination upper limit. On the other hand, if the combination target weight value input and set by the input unit 12 is larger than a predetermined reference value, 5% of the combination target weight value or the larger unit weight × 2 is added to the combination target weight value. The value is calculated as the recommended combination upper limit value.

  The recommended combination upper limit calculated by the recommended combination upper limit calculation means 13a is displayed together with the target combination weight upper limit as an initial set value on an input setting screen of the display unit 14 described later. Further, the combination target weight upper limit value can be variably set at the input unit 12 as an arbitrary value with the combination recommended upper limit value as the center.

  The capability determination means 13b calculates only the weighing item information and combination target weight value of the object W input and set by the input unit 12, or calculates the weighing item information of the item W and the combination target weight value and the recommended combination upper limit value. Based on the recommended combination upper limit value calculated by the means 13a or the combination target weight upper limit value variably set by the user, the specific volume of the object W with respect to one hopper (the weight of the object W to be weighed into one hopper) is obtained. The number of hoppers used in one measurement measurement is obtained from the specific volume, and the upper limit value of the capacity indicated by the number of times the objects W are collected per minute is determined from the obtained results.

  The parameter determination means 13c is a setting table in which operation parameters for normally measuring the object to be weighed W are associated with each range of the weighing object information of the object to be weighed W and the combination target weight value (the object to be weighed). Stored in the weighing item information of the object W and the combination target weight value as keys, and the input unit 12 inputs and sets the weighing item information of the object W and the combination target weight value. Then, the operation parameters corresponding to the weighing product information range and the combination target value range including the input settings are read from the setting table, and the operation parameters to be used are determined.

Note that the operation parameters correspond to the respective times described with reference to FIG. 10, such as the opening / closing time of each hopper in the operation cycle T, the delay time, the charging stability time of the object W, the measurement measurement time, the arrival time width, and the like. is there. Setting table, as shown in FIG. 8, the unit weight _{(w 1 <w 2 <...} <w n) a combination target weight value which is a weighing product information of the objects to be weighed W (weighing products) (W ₁ <W ₂ <... <W _N ) are divided into a plurality of ranges, and the operation parameters S (1,1), S (1,2),..., S (n, N) are associated with each of the divided ranges. And memorized. The unit weight w _m-1 ~w _m combination target weight value W _k-1 ~W _k of the range of combinations operating parameter S of the objects to be weighed W (m, k) is the ability accuracy curve of FIG. 7 Corresponds to the standard setting “Standard”. In addition, regarding the operation parameter giving priority to the ability, the operation parameter S (m + 1, w _{m + 1)} of the range of the combination of the unit weight w _{m to} w _{m + 1 of the} object to be weighed W and the combination target weight value W _{k−2 to} W _k− 1. k-1) corresponds with the operating parameter settings of little ability oriented relative to the standard settings on ability accuracy curve of FIG. 7, "Middle", single of the objects to be weighed W weight w _{m + 1} ~w _{m +} The operation parameter S (m + 2, k−2) in the range of ₂ and the combination target weight values W _{k−3 to} W _k−2 corresponds to the capability-oriented setting “Hi” on the capability accuracy curve of FIG. Furthermore, with regard to the operation parameter giving priority to accuracy, the operation parameter S (m−) in the range of the combination of the single weight w _{m−2 to} w _{m−1 of the} object W to be measured and the combination target weight value W _{k to} W _{k + 1.} 1, k + 1) corresponds to the setting “Middle” with a little emphasis on accuracy compared to the standard setting on the performance accuracy curve of FIG. 7, and is combined with the weights w _{m−3 to} w _{m−2 of the} object W to be weighed. The operation parameter S (m−2, k + 2) in the range of the combination of the target weight values W _{k + 1 to} W _{k + 2} corresponds to the accuracy-oriented setting “Hi” on the performance accuracy curve of FIG.

  In the setting table, generally, if the unit weight of the objects to be weighed W is the same, the larger the combination target weight value, the larger the bulk. Therefore, the stabilization time that is an operation parameter is set longer. Therefore, if the set target value is made larger than the actual combination target weight value, the stabilization time is sufficient, and the accuracy is improved. Further, if the combination target weight value is the same, the larger the unit weight of the workpiece W, the smaller the bulk, so that the hopper operation that is an operation parameter is set earlier. Accordingly, if the set unit weight is made larger than the actual unit weight, the hopper operation becomes faster, and the performance is improved. Since accuracy and ability are limited, it is desirable to change the conditions in the adjacent range of the setting table. The setting table may store the weight of the object W and the combined target weight value in association with each other in the minimum unit.

  The measurement priority adjustment means 13d is a measurement priority of five levels of ability accuracy on the ability adjustment setting screen shown in FIG. When the capability accuracy based on any one of the measurement priorities is selected and set by the input unit 12, the operation parameter (conveying speed of the object W to be measured) is set based on the setting contents of the input unit 12 and the setting table. , Input stabilization time, weighing measurement time) are variable, and the accuracy of the performance is adjusted so that the selected measurement priority can be obtained.

  When the measurement value of the object to be weighed W is input from each weighing unit 11, the combination calculation unit 13 e has a preset range of combinations of the measurement values (range from the combination target weight value to the combination target weight upper limit value). A combination of the weighing hoppers 5 that fits in is selected, and hopper selection information indicating the selected weighing hoppers 5 is output to the hopper control unit 13f.

  When hopper selection information is input from the combination calculation means 13e, the hopper control means 13f controls to open the discharge door of the target weighing hopper 5 selected by the hopper selection information.

  The display control unit 13g controls the display of the display unit 14 to display a menu screen (for example, FIGS. 3 to 7) such as various setting contents and measurement results in accordance with an instruction from the input unit 12. In addition, regarding the capacity adjustment setting screen of FIG. 7, the capacity (the number of times the set of the objects W to be weighed per minute) and accuracy (acceptable as a measurement result) centered on the upper limit value of the capacity determined by the capacity determination means 13b. A plurality of locations (5 locations on the capability adjustment setting screen in FIG. 7) on the capability accuracy curve indicating the relationship with the capability accuracy curve are selectably displayed.

  The display unit 14 is composed of, for example, a display device such as a CRT (Cathode Ray Tube) display or an LCD (Liquid Crystal Display), and is controlled by display control means 13g based on an instruction from the input unit 12 as a menu screen. 3 to 7 as well as an input setting screen, a setting content confirmation screen, a measurement priority adjustment setting screen, and a measurement result screen as shown in FIG.

(Operation parameter setting)
In operating the combination weighing device 1 having the above-described configuration, in accordance with an instruction from the input unit 12, the weighing item information and the combination target weight value are displayed in a state where the input setting screen of FIG. 3 is displayed on the display screen 14a of the display unit 14. Set the input.

  FIG. 3 is an example of the input setting screen, and shows a state in which a setting screen for a single unit of weighing product is displayed. In the setting screen shown in FIG. 3, a guide prompting the user to set the weight of the weighing item (“Enter the mass value per weighing item.”) Is displayed at the top of the display screen 14a, and a series of settings is displayed. It is displayed on the right side of the screen 14a, and an input screen for a single weighing item is displayed on the left side of the display screen 14a. In this state, the input unit 12 inputs a numerical value of the unit weight of the workpiece W on the input screen for the unit weight of the weighing item. When the input of the unit weight of the object to be weighed W is completed, the screen is switched by pressing “Next” on the input setting screen, and the ease of rolling the object to be weighed, the combination target weight value, and the conveyance speed of the object to be weighed W Similarly, an input setting is made at the input unit 12.

  When the weighing product information and the combination target weight value are input and set in the input unit 12, the combination recommended upper limit value calculation means 13a calculates the upper limit value of the combination weight allowed from the combination target weight value as the recommended combination upper limit value. . For example, when the unit weight of the object to be weighed W is input as 1.0 g and the combination target weight value is input as 100 g, 10% of the combination target weight value = 10 g or the unit weight of the object W to be measured × 2 = 2.0 g, that is, 110 g obtained by adding 10 g to 100 g of the combination target weight value is calculated as the recommended combination upper limit value. The calculated combination recommended upper limit value is displayed as an initial setting value on the input setting screen of FIG.

  FIG. 4 shows a state in which the setting screen for the combination target weight upper limit value is displayed as an example of the input setting screen including the recommended combination upper limit value. In the setting screen of FIG. 4, guidance for prompting the setting of the combination target weight upper limit value (“Please enter the product upper limit value”) is displayed at the upper part of the display screen 14a, and a series of setting flow is on the right side of the display screen 14a. The recommended combination upper limit calculated by the recommended combination upper limit calculation means 13a is displayed on the left side of the display screen 14a, and the input screen for the target combination weight upper limit is displayed in parallel with the recommended combination upper limit. . In this state, the combination target weight upper limit value is numerically input at the input unit 12. At this time, as the combination target weight upper limit value, the calculated recommended combination upper limit value is used as it is, or an arbitrary value is input and set based on the recommended combination upper limit value.

  The capability determining means 13b is configured to input only the weighing item information and the combination target weight value of the workpiece W input and set by the input unit 12, or the weighing item information of the workpiece W and the combination target weight value and the combination recommended upper limit. The upper limit value of the capacity is determined based on the recommended combination upper limit value calculated by the value calculating means 13a or the combination target weight upper limit value variably set by the user. Moreover, the ability determination means 13b calculates | requires the ability accuracy curve which shows the relationship between an ability and precision as shown in FIG. 7 centering on the upper limit of the determined ability.

  Further, the parameter determination means 13c is an operation parameter associated with the weighing product information range and the combination target value range including the weighing product information and the combination target weight value of the workpiece W input and set by the input unit 12. S (m, k) is read from the setting table, and the operation parameter to be used is determined. The operation parameter S (m, k) at this time corresponds to the standard setting “Standard” on the performance accuracy curve of FIG. When the upper limit value of the capability and the operation parameter to be used are determined by the above processing, the setting content confirmation screen of FIG. 5 is displayed under the control of the display control means 13g based on the instruction of the input unit 12.

  FIG. 5 shows an example of the setting content confirmation screen. In the setting content confirmation screen of FIG. 5, guidance for confirming the setting content (“Please confirm the setting content”) is displayed at the top of the display screen 14a. Also, the setting contents are displayed at the bottom of the guidance display. In FIG. 5, product name: snack, weighing product single weight: 1.0 g, weighing product rolling ease: difficult to roll, target value (combined target weight value): 100.0 g, upper limit value (combined target weight upper limit value): 105 0.0 g, speed: 80 p / m is displayed as the setting content. Further, the allowable range of the combination distribution of the weighing items (range from the combination target weight value to the combination target weight upper limit value) is displayed at the bottom of the display of the setting content. In FIG. 5, the allowable range of the combination distribution of the weighing items is displayed for the bar graph in which one scale is 1 g.

  FIG. 6 shows another example of the setting content confirmation screen. In the setting content confirmation screen of FIG. 6, as the setting content, product name: snack, weighing product weight: 9.0 g, weighing product rolling ease: difficult to roll, target value (combined target weight value): 100.0 g, upper limit value (Combination target weight upper limit value): 105.0 g, speed: 80 p / m is displayed.

  In addition, on the setting content confirmation screens shown in FIGS. 5 and 6, whether or not the combination distribution of the measurement items is within the allowable range is identified and displayed (for example, green: good, yellow: caution, red: warning). Specifically, when the combination distribution of the measurement items exists in the allowable range, the allowable range is displayed in green indicating good. When the combination distribution of measured items is partly out of the allowable range, the allowable range is displayed in yellow to call attention. If the combination distribution of the weighing product is out of the allowable range, the allowable range is displayed in red for warning.

  In FIG. 5, since the combination distribution of the weighing product having a unit weight of 1.0 g exists in the allowable range (100.0 g to 105.0 g), the allowable range is displayed in green to indicate goodness. On the other hand, in FIG. 6, since the combination distribution of the weighing product having a unit weight of 9.0 g does not exist in the allowable range (100.0 g to 105.0 g), the allowable range is displayed in red to prompt a warning.

  Then, in a state where the combination distribution of the measurement items exists within the allowable range, when “Next” on the setting content confirmation screen of FIG. 5 is pressed to adjust the measurement priority of the final capability accuracy, the input unit 12 The measurement priority adjustment setting screen of FIG. 7 is displayed under the control of the display control means 13g based on the instruction.

  The measurement priority adjustment unit 13d displays the measurement priority adjustment setting screen of FIG. 7 on the capability accuracy curve of the capability adjustment setting screen on condition that the upper limit value of the capability determined by the capability determination unit 13b is below. When the input unit 12 selects and sets the capability accuracy of any one of the five measurement priorities, the setting content of the input unit 12 is used, and the selected measurement priority The performance parameters corresponding to the performance accuracy are read from the setting table of FIG. 8 and used to adjust the performance accuracy so that the selected measurement priority can be obtained.

  FIG. 7 shows an example of the measurement priority adjustment setting screen. In the measurement priority adjustment setting screen of FIG. 7, the measurement priority of the ability accuracy, which gives priority to the ability or the priority on the measurement, can be selected step by step. More specifically, the measurement priority can be selected from a standard setting (Standard), an ability emphasis setting, and an accuracy emphasis setting (both are expressed as Hi in FIG. 7) as to which of ability and accuracy is prioritized. In the example of FIG. 7, multi-level selection is possible, such as a setting with a little emphasis on ability with respect to a standard setting and a setting with a little emphasis on accuracy (both are expressed in Middle). . In addition, the buttons for selecting each setting are displayed on the graph together with an ability accuracy curve that visually indicates that ability and accuracy are in a trade-off relationship (increasing ability decreases accuracy and decreases accuracy ability). It is arranged to display an explanatory note about the selected setting. Specifically, in the example of FIG. 7, the measurement accuracy priority of capability accuracy can be selected and set in five stages on the capability accuracy curve, and shows a state where “Hi” focusing on accuracy is selected and set. . In addition, on the right side of the selection screen, a description of the measurement priority of the selected ability accuracy (“the ability is reduced, but this is a setting that emphasizes accuracy”) is displayed as a guide. In the initial state where the unit weight and combination target weight value of the weighing product are set by the input unit 12 and the upper limit value of the capacity is calculated by the capacity determining means 13b, the standard setting “Standard” is set as the measurement priority. Is selected.

  The adjustment of the capability accuracy by the selection setting of the measurement priority described above is performed as necessary on the condition that the capability determination unit 13b determines the upper limit of the capability or less. Then, when “decision” → “registration” on the measurement priority adjustment setting screen of FIG. 7 is pressed, operation parameters based on the ability accuracy selected and set are registered.

  As described above, in the combination weighing device of this example, the operation parameters (for example, the hopper opening and closing time, the stable weighing time of the weighing object W) are obtained by a simple operation of inputting and setting the weighing object information of the weighing object W and the combination target weight value. , Weighing time, movement time between hoppers, etc.) are automatically set. Accordingly, the weighing operation can be performed without performing complicated operation parameter setting with a skilled adjustment technique by a knowledgeable person as in the past, and the setting operation can be simplified as compared with the conventional case.

  If the weighing object information and the combination target weight value of the object W are input and set, the upper limit value of the combination weight allowed from the combination target weight value is calculated as the recommended combination upper limit value. The value is displayed on the input setting screen together with the input screen for the combined target weight upper limit value as an initial set value. Thereby, the user can variably set the combination target weight upper limit value after confirming the initial set value.

  Furthermore, since it is identified on the setting content confirmation screen whether or not the combination distribution of the measurement items is within the allowable range, it can be recognized from the display content whether or not the setting is correctly performed.

  In addition, at a plurality of locations on the capability accuracy curve indicating the relationship between the capability and accuracy on the measurement priority adjustment setting screen, any one on the capability accuracy curve on condition that the upper limit value of the capability determined by the capability determining means 13b is not exceeded. The ability accuracy can be automatically adjusted by selecting and varying the ability accuracy at the point.

  In the above-described embodiment, the combination weighing device 1 configured to directly discharge the objects to be weighed by the weighing hopper 6 to the collecting chute 7 has been described as an example. However, the objects to be weighed W measured by the weighing hopper 6 are described. The configuration of the present invention can also be applied to a combination weighing device of a type in which is immediately discharged to a memory hopper and prepared for the next weighing.

  Further, in the above-described embodiment, the example in which the operation parameter associated with the measurement item weight and the combination target weight value is stored in the setting table as the measurement item information is not limited to this. . As the weighing product information, in addition to the weighing item weight and the ease of rolling the weighing item, for example, the specific volume, shape (size / length), easiness of flow, etc. of the object to be weighed can be further input and set to combine targets When combined with the weight value, it is possible to perform measurement with higher capacity or higher accuracy. In this case, the contents of the weighing product information for which the measurement measurement is normally performed and the operation parameters associated with the combination target weight value are stored in the setting table.

DESCRIPTION OF SYMBOLS 1 Combination measuring device 2 Dispersing supply part 2a Dispersing part 3 Trough 4 Stock hopper 5 Weighing hopper 6 Collecting chute 7 Discharge hopper 8 Conveyance means 11 Weighing part 12 Input part 13 Control part 13a Combination recommendation upper limit calculation means 13b Capacity determination means 13c Parameter Determination means 13d Measurement priority adjustment means 13e Combination calculation means 13f Hopper control means 13g Display control means 14 Display unit 14a Display screen W Object to be weighed

Claims (3)

The objects to be weighed (W) having variations in individual weight are distributedly supplied to a plurality of hoppers (5), and the objects to be weighed distributedly supplied to the plurality of hoppers are weighed by a weighing unit (11). In the combination weighing device (1) for combining the obtained measurement values and selecting a combination that becomes a combination target weight value in the target weight range, and collecting and discharging the selected objects to be weighed, (1)
An input unit (12) for inputting at least the weighing product information including the mass per one object to be weighed and the combination target weight value;
A setting table in which operation parameters for normally measuring the object to be weighed are associated with the object information of the object to be weighed and the combination target weight value is stored, and input by the input unit The operation parameter associated with the weighing item information of the measured object and the combination target weight value is read from the setting table and determined , and the weighing item information of the weighing object input at the input unit And a control unit (13) for determining an upper limit value of the capacity indicated by the number of times the objects are weighed per minute based on the combination target weight value ;
A display unit that displays any one of a plurality of locations on the capability accuracy curve indicating the relationship between the capability and accuracy centered on the determined upper limit value of the capability so as to be selectively set on condition that the upper limit value of the capability is not more than (14) and a combination weighing device. The control unit (13) calculates an upper limit value of the allowable combination weight from the combination target weight value input by the input unit (12), and determines the weighing object information of the object to be measured, the combination target weight value, and Determining the upper limit of the capacity based on the upper limit of the combined weight;
Wherein the display unit (14) is pre-Symbol sets combined weight of the upper limit combination weighing apparatus according to claim 1, wherein the benzalkonium be variably settable displayed. The control unit (13) determines whether or not a combination distribution of the objects to be weighed (W) exists in a range from the combination target weight value input by the input unit (12) to the upper limit value of the combination weight. The combination weighing device according to claim 1 or 2, characterized in that the display unit (14) displays the identification information.

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