JP6242254B2 - Meter - Google Patents

Description

  The present invention relates to a measuring instrument used for an operator to perform a work of filling a certain amount of an object to be measured in a bag or a container.

  Conventionally, in production factories, supermarkets, etc. that produce food, etc., for example, a work to pack an object to be weighed, such as potatoes, into a bag or a container so as to be a certain amount (hereinafter referred to as “determining this work”). A measuring instrument is used to carry out the “cutting operation”.

  In the conventional measuring instrument used for this fixed operation, for example, the weight of an object to be weighed placed on the measuring instrument is measured by an operator, and the weight value of the weighed object to be measured is set to an appropriate amount set in advance. An appropriate amount is notified when the weight is within the weight range, a light weight is notified when the weight is lower than the lower limit value of the proper weight range, and an overload is notified when the weight value is larger than the upper limit value of the appropriate weight range. Has been. And an operator takes out the to-be-measured object informed of appropriate quantity from a measuring instrument, and packs it in a bag or a container. By repeatedly performing this operation, the production of products packed with an appropriate amount of objects to be weighed is continuously advanced.

  Patent Document 1 prepares containers (boxes) according to rank containing objects to be weighed according to weight rank, and attaches a display unit connected to the weighing device to each container. A technology that places an object on the weighing device with a small amount relative to the target weight, and indicates that the object to be weighed to reach the target weight is indicated by the weight rank and number of pieces by turning on the lamp of the display unit. It is disclosed.

JP2013-231615A

  In the conventional measuring instrument described above, when the measurement result is light or excessive, the object to be weighed is replaced so that it becomes an appropriate amount. At this time, based on experience and intuition, the operator first replaces one object to be weighed with an unweighed object, but it may not be an appropriate amount and may be repeated many times due to trial and error. There is a problem that it takes a lot of time and effort to make an appropriate amount.

  In addition, in the case of the disclosed technique of Patent Document 1, an object to be weighed according to weight rank must be prepared in advance in a container, and a display unit to be attached to the container other than the weighing device is separately provided. There is a problem that it becomes necessary.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a measuring instrument capable of improving the working speed of the constant drilling operation without requiring additional equipment.

  In order to achieve the above object, a measuring instrument according to an aspect of the present invention is used for a constant operation for producing a product composed of a plurality of objects to be weighed whose weight is a value within an appropriate weight range. A measuring device for measuring a total weight of a plurality of objects to be weighed placed on a placement unit by an operator; and the total weight measured by the measuring device is within the appropriate weight range. When it is a value, it is determined to be an appropriate amount, when it is smaller than the lower limit value of the appropriate amount weight range, it is determined to be lightweight, and when it is larger than the upper limit value of the appropriate amount weight range, it is overdose. The weight determination means for determining the weight and the weight distribution range of the object to be weighed are determined in advance, and when the weight determination means determines that the weight is light and when it is determined that the weight is excessive, the operator Is within the weight distribution range from the mounting portion. When it is assumed that one object to be weighed is taken out and one object to be weighed within the weight distribution range is added to the above-mentioned placement unit, Take-out weight information for calculating the weight of the object to be weighed that the operator takes out from the placement section so that the weight falls within the appropriate weight range, and generating take-out weight information that is information about the weight. A generating means, a first notifying means for notifying an operator of the take-out weight information, and an object to be weighed from the placement unit by the operator after the take-out weight information is notified by the first notifying means. The actually measured weight of the remaining object to be weighed after one is taken out is obtained from the weighing means, and the operator goes to the above-mentioned placement unit based on the appropriate weight range and the actually measured weight of the remaining object to be weighed. Calculate the weight of the unmeasured object to be added And includes the additional weight information generation means for generating additional weight information which is information about the weight, and a second informing means for informing the additional weight information to the operator.

  According to this configuration, when it is determined that the total weight of the objects to be weighed on the placement unit is light, and when it is determined that the weight is excessive, an appropriate amount can be obtained by replacing one object to be weighed. In order to do this, the removal weight information regarding the weight of the weighing object to be taken out is notified to the worker, and after the operator removes one weighing object, the additional weight information regarding the weight of the weighing object to be added is notified to the worker. Is done. In other words, since the operator knows the approximate weight of the object to be taken out and the approximate weight of the object to be added, the operator can replace the object to be weighed without going through trial and error, so that a plurality of objects to be weighed in an appropriate amount can be obtained. It is possible to produce commodities made of weighed goods, and it is possible to improve the work speed, thereby improving productivity. Moreover, facilities other than the measuring instrument (for example, a display unit in the case of Patent Document 1) are unnecessary.

  The taken-out weight information includes information indicating that the object to be weighed is taken out and information indicating the weight value or weight of the object to be weighed (for example, “M size” in FIG. 6D). Further, the additional weight information includes information indicating that the object to be weighed is added and information indicating the weight value or weight of the object to be weighed (for example, “L size” in FIG. 6E). .

  Based on the weight distribution range, the take-out weight information generating means has an additional weight range that is a predicted range of the weight of the unmeasured object to be added, and a lower limit value of the appropriate weight range. The difference between the estimated weight after taking out, which is the predicted value of the weight of the remaining object to be weighed after one object to be weighed out from the mounting section in the above assumption, is within the additional weight range. The predicted weight after removal is calculated based on the total weight and the weight distribution range, and the weight of the object to be taken out is calculated based on the predicted weight after removal and the total weight. The additional weight information generating means is configured to calculate the weight of the unmeasured object to be added based on the difference between the lower limit value of the appropriate weight range and the actually measured weight of the remaining object to be weighed. Has been It may be.

  When it is determined that the weight is light by the weight determination means and when it is determined that the weight is excessive, the operator takes out one object to be weighed within the weight distribution range from the placement unit. When it is assumed that one unmeasured object having a weight within the weight distribution range is added to the placement unit, the weight of the measurement object on the placement unit becomes a value within the appropriate weight range. An appropriate amount propriety predicting means for predicting whether or not the weight is to be predicted that the weight of the object to be weighed on the placement unit is not within the appropriate weight range by the appropriate amount propriety predicting means. And third notification means for notifying the operator that the object to be weighed needs to be exchanged, wherein the take-out information generating means is configured to weight the object to be weighed on the placement unit by the appropriate amount propriety prediction means. Is predicted to be within the appropriate weight range. It may be configured to generate the extraction weight information.

  According to this configuration, when it is determined that the total weight of the objects to be weighed on the placement unit is light and when it is determined that the weight is excessive, an appropriate amount is obtained by replacing one object to be weighed. If it is predicted that it will not be an appropriate amount, the operator is notified that a plurality of objects to be weighed must be replaced. As a result, the operator does not have to perform a useless replacement work such as exchanging only one object to be weighed with an object to be weighed, and the work speed and productivity can be further improved. it can.

  Based on the weight distribution range, the appropriate amount propriety predicting means predicts an extraction weight range which is a prediction range of the weight of the object to be weighed taken out from the placement unit, and a weight of the unmeasured object to be added. An additional weight range, which is a range, is determined in advance, and an object to be weighed corresponding to the minimum weight in the take-out weight range from the mounting portion when the weight determination means determines that the weight is light. Is taken out, and it is assumed that one unmeasured object corresponding to the weight within the additional weight range is added to the placement unit, the weight of the measurement object on the placement unit is It is configured to predict whether or not the value is within an appropriate weight range, and when it is determined by the weight determination means that the amount is excessive, the operator can determine the maximum weight of the removal weight range from the placement unit. Weighing objects corresponding to When it is assumed that an unmeasured object corresponding to the weight within the additional weight range is added to the placement unit, the weight of the measurement object on the placement unit is the appropriate weight. It may be configured to predict whether or not the value is within the range.

  The present invention has the above-described configuration, and provides an effect that it is possible to provide a measuring instrument that can improve the working speed of a constant drilling operation without requiring additional equipment.

FIG. 1A is an external view showing an example of a measuring instrument according to an embodiment of the present invention, and FIG. 1B is a block diagram showing a configuration of the measuring instrument of FIG. FIG. 2 is a flowchart showing an example of the operation of the measuring instrument of the present embodiment. FIG. 3 is a flowchart showing an example of the operation of the measuring instrument of the present embodiment. FIG. 4 is a flowchart showing an example of the operation of the measuring instrument of the present embodiment. FIG. 5 is a flowchart showing an example of the operation of the measuring instrument of the present embodiment. 6 (A) to 6 (E) are diagrams each showing an example of display by the measuring instrument of the present embodiment. FIG. 7A is an external view showing another example of the measuring instrument according to the embodiment of the present invention, and FIG. 7B is a block diagram showing the configuration of the measuring instrument of FIG.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference symbols throughout all the drawings, and redundant description thereof is omitted. Further, the present invention is not limited to the following embodiment.

(Embodiment)
FIG. 1A is an external view showing an example of a measuring instrument according to an embodiment of the present invention, and FIG. 1B is a block diagram showing a configuration of the measuring instrument of FIG.

  This measuring instrument is a digital precision pan automatic weighing machine, and is used for constant work. For example, it is used for producing a product for quantitatively packing an object to be weighed (for example, packing potato or the like). This measuring instrument includes a measuring unit 11, a main body 15, and a controller 20.

  The weighing unit 11 includes a weighing pan (mounting unit) 12 on which an object to be weighed is placed, and a weight sensor 13 such as a load cell that supports the weighing pan 12 and can weigh the object to be weighed on the weighing pan 12. Become. The weight sensor 13 is connected to the controller 20 via a well-known signal processing circuit (not shown) (for example, an amplifier or an A / D converter). Thereby, the weight of the object to be weighed on the weighing pan 12 is sequentially weighed by the weight sensor 13 and input to the controller 20. The weight sensor 13 and the controller 20 are stored in the housing of the main body 15.

  The main body 15 includes an operation unit 16, a display unit 17, and a determination lamp 18 on the front surface thereof. The operation unit 16 functions as means for inputting operations such as operation start and operation stop of the measuring instrument, operation condition (parameter) values and the like of the measuring instrument to the controller 20. That is, by using the operation unit 16, various input signals due to the operation of the operation unit 16 are input to the controller 20 and stored in the storage unit of the controller 20.

  The display unit 17 is configured using, for example, a small liquid crystal display, and displays the weight of the object on the weighing pan 12 calculated by the controller 20, and also functions as first to third notification units. .

  The determination lamp 18 is configured using, for example, a multicolor LED, and can change the lighting color.

  The controller 20 is composed of, for example, a microcontroller and has a calculation unit including a CPU of the microcontroller and a storage unit including a RAM and a ROM of the microcontroller. The controller 20 inputs signals from the weight sensor 13 and the operation unit 16, outputs signals such as data to be displayed on the display unit 17, and controls the determination lamp 18.

  The controller 20 functions as a weighing unit that measures the weight of the object to be weighed on the weighing pan 12 together with the weight sensor 13 and the like, as well as a weight determination unit, a taken-out weight information generation unit, an additional weight information generation unit, and an appropriate amount It functions as a prediction means. The controller 20 may be composed of a single controller that performs centralized control, or may be composed of a plurality of controllers that perform distributed control in cooperation with each other.

  The operation of the measuring instrument configured as described above will be described. The operation of this measuring instrument is controlled by the controller 20, and all the information necessary for operating the measuring instrument is stored in the storage unit of the controller 20. All information stored during operation is stored in the storage unit of the controller 20. In this measuring instrument, for example, the weighing capacity is 3000 g, the scale weight is 1 g, and the minimum measured quantity is 20 g.

  For example, the administrator can operate the operation unit 16 to switch the measuring instrument between the setting mode and the measuring mode. First, for example, before starting work, the administrator selects the setting mode by operating the operation unit 16 and sets values of parameters necessary for performing the operation in the weighing mode in the setting mode. These settings are configured such that information necessary for setting is displayed on the display unit 17 and can be set by operating the operation unit 16 while viewing the information. Further, when the operator or the like switches to the measurement mode, the measuring instrument performs an operation based on the set parameter values.

  The parameters include a lower limit value WD and an upper limit value WU of an appropriate weight range of a product to be produced, and a weight distribution range of an object to be weighed (for example, potato) (hereinafter referred to as “unit weight range of an object to be weighed”). Lower limit value Od and upper limit value Ou, lower limit value WRd and upper limit value WRu of removal instruction range (removal weight range), lower limit value WAd and upper limit value WAu of additional instruction range (additional weight range), and additional weight calculation Margin weight Wm and a threshold value Wt for determining the presence or absence of an object to be weighed on the weighing pan 12 are set. These set values are input from the operation unit 16 and stored (set) in the storage unit of the controller 20. Note that a minimum measurement amount (for example, 20 g) may be automatically set as the threshold value Wt. Further, once the parameter values are set, they are retained (stored) even when the power is turned off, and resetting is unnecessary unless changed.

  As an example, the appropriate amount weight range is set to a range of 300 to 320 g where the lower limit value WD is 300 g and the upper limit value WU is 320 g, for example. The single weight range of the objects to be weighed is set, for example, in a range of 70 to 130 g where the lower limit value Od is 70 g and the upper limit value is 130 g. Further, the take-out instruction range is set as a narrower range within the single weight range of the object to be weighed, for example, a range of 80 to 110 g where the lower limit value WRd is 80 g and the upper limit value WRu is 110 g. . Further, the additional instruction range is set as a narrower range within the single weight range of the object to be weighed, for example, set in a range of 80 to 115 g where the lower limit value WAd is 80 g and the upper limit value WAu is 115 g. . Further, the margin weight Wm at the time of calculating the additional weight is set to 5 g, for example. The threshold value Wt is set to 20 g, for example. In addition, the lower limit value and the upper limit value in the respective ranges of the appropriate weight range, the single weight range of the object to be weighed, the removal instruction range, and the additional instruction range are the minimum weight value and the maximum weight value in the respective ranges.

  In the present embodiment, when the total weight of the objects to be weighed on the weighing pan 12 is not an appropriate amount (not within the appropriate weight range), for example, one object to be weighed on the weighing pan 12 is taken out and an unweighed object to be weighed is taken out. An appropriate amount is added by adding a sample. At this time, the take-out instruction range is set as a range for instructing the operator of the weight of the object to be weighed out from the weighing pan 12, and the additional instruction range is provided as a range for instructing the operator of the weight of the unmeasured object to be added. Is set. These take-out instruction range and additional instruction range may be the same range, but in the above example, it is considered that the number of objects to be weighed is larger than the number of objects to be weighed on the weighing pan 12. Therefore, the additional instruction range is made wider than the extraction instruction range.

  The appropriate weight range may be set such that the target weight and the allowable width are input from the operation unit 16, the lower limit value WD is set to the target weight, and the upper limit value WU is set to (target weight + allowable width). . Further, the lower limit value and the upper limit value of the take-out instruction range and the additional instruction range may be input from the operation unit 16 as ratios (for example, percentages) to the lower limit value and the upper limit value of the single weight range of the object to be weighed.

  When performing a weighing operation (product production operation), the operator operates the operation unit 16 to set the measuring instrument to the measurement mode. Then, the operator places an object to be weighed on the weighing pan 12, and when the determination lamp 18 lights in blue as will be described later, packs the object to be weighed on the weighing pan 12 into a pack and puts one product. Produce. In this way, products are produced sequentially.

  2-5 is a flowchart which shows an example of operation | movement of the measuring device of this embodiment. Moreover, FIG. 6 (A)-FIG.6 (E) are figures which show an example of the display by the measuring device of this embodiment. 2 to 5 are flowcharts in the case of producing one commodity, and a plurality of commodities are continuously produced by repeating the processes in FIGS. The processing in FIGS. 2 to 5 is executed by the controller 20.

  First, a plurality of objects to be weighed that an operator expects to be within a proper weight range (for example, a target weight) are placed on the weighing pan 12. Then, as shown in FIG. 2, the controller 20 calculates the weight W of the object to be weighed on the weighing pan 12 based on the weight signal of the weight sensor 13 acquired sequentially (step S1).

  And it is determined whether the weight W of a to-be-measured object is larger than the threshold value Wt (step S2). If the weight W of the object to be weighed is equal to or less than the threshold value Wt, the determination lamp 18 is turned off (step S5).

  On the other hand, when the weight W of the object to be weighed is larger than the threshold value Wt, the process proceeds to step S3, and it is determined whether or not the weight W of the object to be weighed is not less than the lower limit value WD of the appropriate amount weight range.

  Here, when the weight W of the object to be weighed is less than the lower limit value WD, it is determined that the object to be weighed is light, and the determination lamp 18 is lit in red (step S6).

  On the other hand, when the weight W of the object to be weighed is not less than the lower limit value WD, the process proceeds to step S4, and it is determined whether or not the weight W of the object to be weighed is larger than the upper limit value WU of the appropriate amount weight range.

  Here, when the weight W of the object to be weighed is larger than the upper limit value WU, it is determined that the object to be weighed is excessive, and the determination lamp 18 is lit in yellow (step S7).

  On the other hand, when the weight W of the object to be weighed is not more than the upper limit value WU, it is determined that the object to be weighed is an appropriate amount, and the determination lamp 18 is lit in blue (step S8). The operator packs the objects to be weighed on the weighing pan 12 at this time as a product in a pack. Thereby, one product is produced.

  As described above, when it is determined that the object to be weighed is light (step S6), the process proceeds to step S11 in FIG.

  Steps S11 to S17 in FIG. 3 indicate that if a plurality of objects to be weighed on the weighing pan 12 are not replaced, it is predicted that they will not be in an appropriate weight range, and that a plurality of replacements are necessary. In the case where it is predicted that an appropriate weight range will be obtained by taking out one object to be weighed from the weighing pan 12 and adding one unmeasured object to the processing for displaying on the unit 17, And a process for predicting and displaying the weight of the object to be weighed taken out from the weighing pan 12. Further, the process for predicting and displaying the weight of the object to be added is shown in steps S21 to S25 in FIG.

  In step S11, the predicted weight A of the remaining object to be weighed when one object to be weighed that is expected to be the minimum from the weighing pan 12 is calculated. The predicted weight A is calculated by subtracting the lower limit value WRd of the take-out instruction range from the weight W of the object to be weighed on the weighing pan 12.

  Next, in step S12, it is determined whether or not the value obtained by subtracting the predicted weight A from the lower limit value WD of the appropriate amount weight range is within the additional instruction range. If this determination result does not fall within the additional instruction range, it is assumed that even if the smallest object to be weighed is taken out of the weighing pan 12 and the largest object to be weighed is added, the weight does not fall within the appropriate weight range. Then, information indicating that it is necessary to exchange a plurality of objects to be weighed (for example, “a plurality of objects need to be replaced”) is displayed on the screen of the display unit 17 (step S13). Thereafter, when the operator replaces a plurality of objects to be weighed on the weighing pan 12 with a plurality of objects to be weighed, the process returns to the first step S1.

  If the determination result in step S12 is within the additional instruction range, the process proceeds to step S14. In this step S14, the predicted weight B of the remaining object to be weighed when one object to be weighed is taken out from the weighing pan 12 is calculated. The predicted weight B is calculated as B = W−Oc, where Oc is the center value of the single weight range of the object to be weighed. The center value Oc of the unit weight range of the object to be weighed can be calculated as an average value of the lower limit value Od and the upper limit value Ou of the unit weight range of the object to be weighed, that is, (Od + Ou) / 2.

  Next, in step S15, the predicted weight (WD-B) of the object to be added to make the target weight (the lower limit value WD of the appropriate weight range) based on the predicted weight B of the remaining object to be weighed is added. It is determined whether it is within the range.

  If the determination in step S15 is “NO”, the predicted weight B of the remaining object to be weighed is changed in step S16, and the process returns to step S15. In step S16, specifically, using the upper limit value WAu of the additional instruction range, the value of B + {(WD−B) −WAu} = WD−WAu is changed to become the new predicted weight B. Here, the new predicted weight B is calculated as a value obtained by adding the difference between the additional predicted value (WD-B) and the additional instructionable upper limit (WAu) to the old predicted weight B.

  If the determination in step S15 is “YES”, in step S17, the removal instruction weight is calculated as WB, and the removal instruction weight and the removal instruction are displayed on the screen of the display unit 17. An example of the display screen in this case is shown in FIG. In FIG. 6A, an instruction to take out a 95 g object to be weighed is displayed. The operator sees this instruction and takes out one object to be weighed estimated to be about 95 g from the weighing pan 12.

  In the above steps S11 and S12, the operator takes out one object to be weighed within the single weight range (in the above example, the minimum weight within the take-out instruction range) from the weighing pan 12, and within the single weight range. When it is assumed that one unweighed object to be weighed (weight within the additional instruction range in the above example) is added to the weighing pan 12, the total weight of the weighing objects on the weighing pan 12 is within the appropriate weight range. It is an example of the process which estimates whether it becomes a value. In steps S14 to S17, the operator takes out one object to be weighed within the unit weight range from the weighing pan 12, and the weight within the unit weight range (the weight within the additional instruction range in the above example) is not yet obtained. When it is assumed that one weighing object is added to the weighing pan 12, the operator sets the weighing pan 12 to 1 so that the total weight of the weighing objects on the weighing pan 12 is within the appropriate weight range. It is an example of the process which calculates the weight of the to-be-measured object taken out individually.

  Next, as shown in FIG. 4, the controller 20, based on the weight signal of the weight sensor 13, the remaining amount on the weighing pan 12 when the operator takes out one object to be weighed from the weighing pan 12. The weight Wx of the object to be weighed is calculated (step S21).

  Next, in step S22, it is determined whether or not the value obtained by subtracting the weight Wx of the object to be weighed from the lower limit value WD of the appropriate weight range is within the additional instruction range. If the determination result is not within the additional instruction range, an instruction to replace the object to be taken out (for example, “take out by exchanging with a larger or smaller one”) is displayed on the screen of the display unit 17 (step S23). ).

  In this step S23, the value of WD-Wx is compared with the upper limit value and lower limit value of the additional instruction range. If the value of WD-Wx is larger than the upper limit value of the additional instruction range, the object to be taken out is taken out earlier. An instruction to replace the object to be weighed that is smaller than the object to be weighed is displayed on the screen of the display unit 17, and when the value of WD-Wx is smaller than the lower limit value of the additional instruction range, the object to be taken out is removed. You may make it display on the screen of the display part 17 the instruction | indication which replaces | exchanges for the to-be-measured item larger than a measurement thing.

  And an operator sees the instruction | indication of the display part 17, and replaces | exchanges the to-be-measured object taken out (it replaces). In step S24, the controller 20 calculates the weight of the object to be weighed on the weighing pan 12 after replacement based on the weight signal of the weight sensor 13, and returns the weight to Wx, and returns to step S22.

  If the value of (WD−Wx) is within the additional instruction range in step S22, the process proceeds to step S25. In step S25, the margin weight Wm is added to the value of (WD−Wx) to calculate the additional instruction weight, and the additional instruction weight and the additional instruction are displayed on the screen of the display unit 17. An example of the display screen in this case is shown in FIG. In FIG. 6B, an instruction to add a 115 g object to be weighed is displayed. The operator sees this instruction and adds (loads) the object to be weighed estimated to be about 115 g to the weighing pan 12.

  In addition, the margin weight Wm is added to the value of (WD−Wx) to obtain the additional instruction weight when the weight of the actually added object to be weighed is smaller than (WD−Wx). This is to avoid this because the weight (Wy) is smaller than the lower limit (target weight) WD of the appropriate weight range.

  Next, the controller 20 calculates the weight Wy of the weighing object on the weighing pan 12 after one weighing object is added by the operator based on the weight signal of the weight sensor 13 (step S26). ).

  Next, in step S27, it is determined whether or not the weight Wy of the object to be weighed is equal to or greater than the lower limit value WD of the appropriate weight range. Here, when the weight Wy of the object to be weighed is less than the lower limit value WD, an instruction to replace the object to be weighed previously with a larger object to be weighed (for example, “change to a slightly larger one”) is displayed on the display unit 17. Is displayed on the screen (step S28).

  And an operator sees the instruction | indication of the display part 17, and replaces | exchanges the to-be-measured object to add. In step S29, the controller 20 calculates the weight of the object to be weighed on the weighing pan 12 after replacement based on the weight signal of the weight sensor 13, and returns this weight to Wy as step W27.

  If the weight Wy of the object to be weighed is not less than the lower limit value WD of the appropriate weight range in step S27, the process proceeds to step S30.

  Next, in step S30, it is determined whether or not the weight Wy of the object to be weighed is larger than the upper limit value WU of the appropriate amount weight range. Here, when the weight Wy of the object to be weighed is larger than the upper limit value WU, an instruction to replace the object to be weighed previously with a smaller object to be weighed (for example, “change to a slightly smaller one”) is displayed on the display unit 17. Is displayed on the screen (step S31).

  And an operator sees the instruction | indication of the display part 17, and replaces | exchanges the to-be-measured object to add. In step S32, the controller 20 calculates the weight of the object to be weighed on the weighing pan 12 after replacement based on the weight signal of the weight sensor 13, and returns this weight as Wy to step S27.

  In step S30, when the weight Wy of the object to be weighed is less than the upper limit value WU of the appropriate weight range, it is determined that the object to be weighed is an appropriate amount, and the determination lamp 18 is lit in blue and the display unit 17 is turned on. Is displayed on the screen (step S33). An example of the display screen in this case is shown in FIG. The operator packs the objects to be weighed on the weighing pan 12 at this time as a product in a pack. Thereby, one product is produced.

  A specific example of the above light weight determination process (steps S11 to S17, S21 to S33) will be described. As illustrated above, the appropriate weight range is 300 to 320 g, the single weight range of the object to be weighed is 70 to 130 g (the center value Oc is 100 g), the take-out instruction range is 80 to 110 g, and the additional instruction range is 80. ˜115 g, and margin weight when calculating additional weight is 5 g.

  For example, when the weight W of the first object to be weighed is 280 g and the light weight determination is made, the predicted weight A calculated in step S11 is W-WRd = 280-80 = 200 (g).

  Next, (WD-A) = 300-200 = 100 (g) in step S12, which is within the additional instruction range (80 to 115 g), the process proceeds to step S14.

  The predicted weight B calculated in step S14 is (W−Oc) = (280−100) = 180 (g).

  Next, (WD-B) = 300-180 = 120 (g) in step S15, and this is not within the additional instruction range (80 to 115 g), so the process proceeds to step S16.

  In step S16, WD-WAu = 300-115 = 185 (g) is calculated and set as a new predicted weight B.

  In the next step S15, (WD-B) = 300-185 = 115 (g), which is within the additional instruction range (80 to 115 g), and thus the process proceeds to step S17.

  In step S17, WB = 280-185 = 95 (g) is calculated, and an instruction to take out an object to be weighed (95 g) is displayed (FIG. 6A).

  For example, if the operator takes out 90 g of the object to be weighed, the weight Wx acquired in step S21 is 280−90 = 190 (g).

  In the next step S22, (WD-Wx) = 300-190 = 110 (g), which is within the additional instruction range (80 to 115 g), and thus proceeds to step S25.

  In step S25, a value (115g) obtained by adding a margin weight of 5g to 110g is calculated, and an instruction to add an object to be weighed with this weight (115g) is displayed (FIG. 6B).

  If the operator can add 110 to 130 g of an object to be weighed by looking at the instruction to add the 115 g object to be weighed, the total weight Wy is determined to be an appropriate amount within the appropriate weight range (300 to 320 g). Therefore, it is considered that the processes of steps S28, S29, S31, and S32 are rarely performed.

  Next, the case where it is determined in step S7 in FIG. 2 that the object to be weighed is excessive will be described. In this case, after step S7, the process proceeds to step S41 in FIG.

  Steps S41 to S47 in FIG. 5 indicate that if a plurality of objects to be weighed on the weighing pan 12 are not replaced, it is predicted that they will not be in an appropriate weight range. In the case where it is predicted that an appropriate weight range will be obtained by taking out one object to be weighed from the weighing pan 12 and adding one unmeasured object to the processing for displaying on the unit 17, And a process for predicting and displaying the weight of the object to be weighed taken out from the weighing pan 12. Further, the process for predicting and displaying the weight of the object to be added is shown in steps S21 to S25 in FIG. 4 as in the case where it is determined that the weight is light in step S6.

  In step S41, the predicted weight C of the remaining object to be weighed when one object to be weighed with the maximum weight is taken out from the weighing pan 12 is calculated. The predicted weight C is calculated by subtracting the upper limit value WRu of the take-out instruction range from the weight W of the object to be weighed on the weighing pan 12.

  Next, in step S42, it is determined whether or not the value obtained by subtracting the predicted weight C from the upper limit value WU of the appropriate weight range is within the additional instruction range. If this determination result does not fall within the additional instruction range, it is assumed that even if the largest object to be weighed is taken out of the weighing pan 12 and the smallest object to be weighed is added, the weight does not fall within the appropriate weight range. Then, information indicating that it is necessary to replace a plurality of objects to be weighed (for example, “a plurality of objects need to be replaced”) is displayed on the screen of the display unit 17 (step S43). Thereafter, when the operator replaces a plurality of objects to be weighed on the weighing pan 12 with a plurality of objects to be weighed, the process returns to the first step S1.

  If the determination result in step S42 is within the additional instruction range, the process proceeds to step S44. In this step S44, the predicted weight D of the remaining object to be weighed when one object to be weighed is taken out from the weighing pan 12 is calculated. The predicted weight D is calculated as D = W−Oc, where Oc is the center value of the single weight range of the object to be weighed.

  Next, in step S45, the predicted weight (WD-D) of the object to be added to obtain the target weight (the lower limit value WD of the appropriate weight range) based on the predicted weight D of the remaining object to be weighed is added. It is determined whether it is within the range.

  If the determination in step S45 is “NO”, the predicted weight D of the remaining object to be weighed is changed in step S46, and the process returns to step S45. In step S46, specifically, using the lower limit value WAd of the additional instruction range, the value of D + {(WD−D) −WAd} = WD−WAd is changed to a new predicted weight D. Here, the new predicted weight D is calculated as a value obtained by adding the difference between the additional predicted value (WD-D) and the additional instructionable lower limit (WAd) to the old predicted weight D.

  If the determination in step S45 is “YES”, in step S47, the removal instruction weight is calculated as WD, and the removal instruction weight and the removal instruction are displayed on the screen of the display unit 17.

  In the above steps S41 and S42, the operator takes out one object to be weighed having a weight within the single weight range (in the above example, the maximum weight within the take-out instruction range) from the weighing pan 12, and the weight within the single weight range ( In the above example, when it is assumed that one unmeasured object (weight within the additional instruction range) is added to the weighing pan 12, the total weight of the objects to be weighed on the weighing pan 12 becomes a value within the appropriate weight range. It is an example of the process which estimates whether it becomes. Further, in steps S44 to S47, the operator takes out one object to be weighed within the single weight range from the weighing pan 12, and the weight within the single weight range (the weight within the additional instruction range in the above example) is not yet obtained. When it is assumed that one weighing object is added to the weighing pan 12, the operator sets the weighing pan 12 to 1 so that the total weight of the weighing objects on the weighing pan 12 is within the appropriate weight range. It is an example of the process which calculates the weight of the to-be-measured object taken out individually.

  After step S47, as in the case of the light weight determination described above, the process proceeds to step S21 shown in FIG. 4, and the controller 20 allows the operator to remove one piece from the weighing pan 12 based on the weight signal of the weight sensor 13. The weight Wx of the remaining objects to be weighed on the weighing pan 12 when the objects to be weighed are taken out is calculated. Thereafter, the processing of step S22 to step S33 is subsequently performed, and one product is produced by packing the objects to be weighed on the weighing pan 12 when the operator determines that the amount is appropriate as a product. .

  A specific example of the above-described processing at the time of overdose determination (steps S41 to S47, S21 to S33) will be described. Here, as exemplified above, the appropriate weight range is 300 to 320 g, the single weight range of the object to be weighed is 70 to 130 g (this center value Oc is 100 g), the take-out instruction range is 80 to 110 g, and the additional instruction range is 80 to 115 g, and the margin weight when calculating the additional weight is 5 g.

  For example, when the overweight determination is made when the weight W of the first object to be weighed is 330 g, the predicted weight C calculated in step S41 is W-WRu = 330-110 = 220 (g).

  Next, (WU-C) = 320-220 = 100 (g) in step S42, which is within the additional instruction range (80 to 115 g), the process proceeds to step S44.

  The predicted weight D calculated in step S44 is (W−Oc) = (330−100) = 230 (g).

  Next, (WD-D) = 300-230 = 70 (g) in step S45, and this is not within the additional instruction range (80 to 115 g), so the process proceeds to step S46.

  In step S46, WD-WAd = 300-80 = 220 (g) is calculated and set as a new predicted weight D.

  In the next step S45, (WD-D) = 300-220 = 80 (g), which is within the additional instruction range (80 to 115 g), the process proceeds to step S47.

  In step S47, WD = 330-220 = 110 (g) is calculated, and an instruction to take out an object to be weighed with this weight (110 g) is displayed.

  For example, if the operator takes out 120 g of the object to be weighed, the weight Wx acquired in step S21 is 330−120 = 210 (g).

  In the next step S22, (WD-Wx) = 300-210 = 90 (g), which falls within the additional instruction range (80 to 115 g), and thus proceeds to step S25.

  In step S25, a value (95g) obtained by adding a margin weight 5g to 90g is calculated, and an instruction to add an object to be weighed with this weight (95g) is displayed.

  If the operator can add 90 to 110 g of the object to be weighed by looking at the instruction to add the object to be weighed 95 g, the total weight Wy is determined to be an appropriate amount within the appropriate weight range (300 to 320 g). Therefore, it is considered that the processes of steps S28, S29, S31, and S32 are rarely performed.

  In the above description, the object to be taken out is displayed by weight at the time of light weight determination and overload determination (steps S17 and S47), but the unit weight range (Od to Ou) of the object to be weighed is a plurality of ranges. It is possible to display the range to which the object to be weighed is taken out. For example, when the unit weight of the object to be weighed is 70 to 130 g, the object to be weighed less than 90 g is S size, the object to be weighed 90 g to 110 g is M size, and the object to be weighed more than 100 g is L size. The size of the object to be weighed out may be displayed. An example of the display screen in this case is shown in FIG. In FIG. 6D, an instruction to take out an M-size object (the take-out instruction is indicated by an arrow) is displayed.

  Similarly, in the light weight determination and the overload determination, the added object to be weighed is displayed by weight (step S25), but the unit weight range (Od to Ou) of the object to be weighed is divided into a plurality of ranges. The range to which the objects to be weighed are added may be displayed. For example, as described above, a range of S size, M size, and L size may be determined according to the weight, and the size of an object to be weighed may be displayed. An example of the display screen in this case is shown in FIG. In FIG. 6E, an instruction to add an L-size object (the addition instruction is indicated by an arrow) is displayed.

  In the present embodiment, when determining the weight W of the object to be weighed on the weighing pan 12 and when determining the excess amount, the weight information of the object to be weighed is taken out in order to obtain an appropriate amount by replacing one object to be weighed. (Weight or size) is notified (steps S17 and S47), and after taking out, weight information (weight or size) of the object to be added is notified (step S25). In other words, since the operator knows the approximate weight of the object to be taken out and the approximate weight of the object to be added, replace the object to be weighed without trial and error, and adjust the weight of the object to be weighed. Commodities consisting of collectives can be produced, and the work speed can be improved, thereby improving productivity. Moreover, facilities other than the measuring instrument (for example, a display unit in the case of Patent Document 1) are unnecessary.

  In addition, it is predicted whether or not an appropriate amount will be obtained by exchanging one object to be measured, and if it is predicted that it will not be an appropriate amount, information indicating that replacement of a plurality of objects to be weighed is necessary will be given to the operator. (Steps S13 and S43), it is not necessary to perform a wasteful replacement work such as replacing only one object to be weighed with an unweighed object, improving work speed and improving productivity. Can be further planned.

  In the present embodiment, information to notify the worker is displayed on the display unit 17, but a speaker or the like may be provided and notified by sound or the like from the speaker. That is, information indicating that it is necessary to replace a plurality of objects to be weighed in steps S13 and S43, information on an instruction to take out an object to be weighed in steps S17 and S47, information on an instruction to add an object to be weighed in step S25, Information or the like instructed in steps S23, S28, and S31 may be notified by voice from a speaker.

  Further, in this embodiment, by setting the take-out instruction range and the additional instruction range within the unit weight range of the object to be weighed and narrower than that, the weight of the object to be actually taken out and the In many cases, the weights of the objects to be weighed are within the respective ranges, and it is preferable that the appropriate removal instruction weight and the appropriate additional instruction weight can be calculated. It is good also as the same range as the unit weight range (Od-Ou) of a measurement thing. In other words, the single weight range (Od to Ou) of the object to be weighed can be used instead of the take-out instruction range and the additional instruction range. In this case, in the description of the processing shown in FIGS. 3, 4, and 5, the wording of the extraction instruction range and the additional instruction range may be replaced with the single weight range of the object to be weighed.

  In the present embodiment, a plurality of objects to be weighed that the operator expects to be within an appropriate weight range are first placed on the weighing pan 12, but the objects to be weighed are placed on the weighing pan 12 one by one. At that time, the controller 20 calculates and stores the weight of each object to be loaded one by one, and the weight of one object to be weighed is within the set unit weight range (Od When it is out of the range of (˜Ou), a warning to that effect may be given (for example, that fact may be displayed on the display unit 17). In addition, the controller 20 changes the unit weight range (Od to Ou) so as to include the weight of the object to be weighed out of the range of the unit weight range (Od to Ou). The range (WRd to WRu) and the additional instruction range (WAd to WAu) may be changed. For example, the lower limit value WRd of the removal instruction range and the lower limit value WAd of the additional instruction range are changed to a weight obtained by adding a predetermined value to the lower limit value Od after the change of the single weight range, and the upper limit value WRu and additional instruction of the removal instruction range are changed. The upper limit value WAu of the range may be changed to a weight obtained by subtracting a predetermined value from the upper limit value Ou after the change of the single weight range.

  As described above, when the objects to be weighed are placed on the weighing pan 12 one by one, the controller 20 calculates the weight of each object to be weighed one by one, and each object to be weighed. And the order of placing each object to be weighed are stored in association with each other, and at the time of light weight determination, the object to be weighed closest to (WB) is taken out in step S17 (FIG. 3). In this way, an instruction as to what number to place the object to be weighed out may be displayed. Similarly, at the time of overdose determination, in step S47 (FIG. 5), an instruction on how to take out the object to be weighed so as to take out the object to be weighed closest to (WD) is displayed. It may be. In this case, for example, if the position of the objects to be weighed in order is indicated on the weighing pan 12 by a number or the like, the operator can immediately know which object to be weighed out.

  FIG. 7A is an external view showing another example of the measuring instrument according to the embodiment of the present invention, and FIG. 7B is a block diagram showing the configuration of the measuring instrument of FIG.

  This measuring instrument is a digital platform scale, and is used for a fixed work. For example, the measuring instrument is used to produce a product for quantitative packing (for example, packing) of an object to be weighed. This measuring instrument includes a measuring unit 31, an operation display unit 35, and a controller 40.

  The weighing unit 31 includes a weighing table (mounting unit) 32 on which an object to be weighed is placed, and a weight sensor 33 such as a load cell that supports the weighing table 32 and can measure the weight of the object to be weighed on the weighing table 32. Become. The weight sensor 33 may be composed of a plurality of (for example, four) load cells and the like, and is connected to the controller 40 via a well-known signal processing circuit (for example, an amplifier or an A / D converter) not shown. It is connected. As a result, the weight of the object to be weighed on the weighing platform 32 is sequentially weighed by the weight sensor 33 and input to the controller 40. The controller 40 is stored in the casing of the operation display unit 35.

  The operation display unit 35 includes an operation unit 36, a display unit 37, and a determination lamp 38 on the front surface. The functions of the operation unit 36, display unit 37, determination lamp 38, and controller 40 are the same as the functions of the operation unit 16, display unit 17, determination lamp 18, and controller 20 shown in FIGS. Thus, although the detailed description is omitted, the same effect as the measuring instrument shown in FIG. 1 can be obtained.

  INDUSTRIAL APPLICABILITY The present invention is useful as a measuring instrument or the like that can improve the working speed of a constant drilling operation without requiring additional equipment.

DESCRIPTION OF SYMBOLS 11 Weighing part 12 Weighing pan 13 Weight sensor 15 Main body 16 Operation part 17 Display part 18 Judgment lamp 20 Controller

Claims (3)

A measuring instrument used for a constant operation for producing a product composed of a plurality of objects to be weighed whose weight falls within a proper weight range,
A weighing means for weighing a total weight of a plurality of objects to be weighed placed on a placement unit by an operator;
When the total weight measured by the weighing means is a value within the appropriate weight range, it is determined to be an appropriate amount, and when the total weight is smaller than the lower limit value of the appropriate weight range, it is determined to be lightweight. A weight determination means for determining that the amount is excessive when the value is larger than the upper limit value of the appropriate weight range;
The weight distribution range of the object to be weighed is determined in advance. When it is assumed that one object to be weighed within the distribution range is taken out and one object to be weighed within the weight distribution range is added to the above-mentioned placement unit, Calculates the weight of an object to be taken out by the operator so that the weight of the object to be weighed is a value within the appropriate weight range, and generates an extraction weight information that is information about the weight. Taking out weight information generating means,
First notifying means for notifying an operator of the extracted weight information;
After the take-out weight information is notified by the first notification means, the measured weight of the remaining object to be weighed after one object is taken out from the placement unit by the operator is acquired from the measurement means. Then, based on the appropriate weight range and the actually measured weight of the remaining objects to be measured, the weight of an unmeasured object to be added to the placement unit by the operator is calculated, Additional weight information generating means for generating certain additional weight information;
Second notifying means for notifying an operator of the additional weight information;
When it is determined that the weight is light by the weight determination means and when it is determined that the weight is excessive, the operator takes out one object to be weighed within the weight distribution range from the placement unit. When it is assumed that one unmeasured object having a weight within the weight distribution range is added to the placement unit, the weight of the measurement object on the placement unit becomes a value within the appropriate weight range. An appropriate amount availability predicting means for predicting whether or not
When the weight predicting means predicts that the weight of the object to be weighed on the mounting portion is not within the weight range, the operator needs to replace a plurality of objects to be weighed. Bei example and the third informing means for informing to,
The take-out weight information generating means includes
The extraction weight information is generated only when the weight of the object to be weighed on the placement unit is predicted to be a value within the appropriate amount weight range by the appropriate amount propriety prediction unit .
Weighing device. The appropriate amount propriety predicting means includes
Based on the weight distribution range, an extraction weight range that is a predicted range of the weight of the object to be weighed taken out from the placement unit, and an additional weight range that is a predicted range of the weight of the unmeasured object to be added Is predetermined,
When the weight determination means determines that the weight is light, the operator takes out one object to be weighed corresponding to the minimum weight in the take-out weight range from the placement unit, and sets the weight within the additional weight range. When it is assumed that one corresponding unmeasured object to be measured is added to the above-described placement unit, it is predicted whether or not the weight of the measurement object on the above-mentioned placement unit will be a value within the appropriate weight range. Configured as
When it is determined by the weight determination means that the amount is excessive, the operator takes out one object to be weighed corresponding to the maximum weight in the removal weight range from the placement unit, and sets the weight within the additional weight range. When it is assumed that one corresponding unmeasured object to be measured is added to the above-described placement unit, it is predicted whether or not the weight of the measurement object on the above-mentioned placement unit will be a value within the appropriate weight range. Configured as
The measuring instrument according to claim 1 . The take-out weight information generating means includes
  Based on the weight distribution range, an additional weight range, which is a predicted range of the weight of the unmeasured object to be added, is determined in advance, and the lower limit value of the appropriate weight range and the assumption described above are described above. The total weight so that the difference between the weight of the remaining object to be weighed after taking out one object to be weighed from the placement unit and the predicted weight after removal is within the additional weight range. Calculating the estimated weight after taking out based on the weight distribution range, and calculating the weight of the object to be taken out based on the estimated weight after taking out and the total weight,
  The additional weight information generating means includes
  Based on the difference between the lower limit value of the appropriate weight range and the actually measured weight of the remaining weighing object, the weight of the unmeasured weighing object to be added is calculated.
  The measuring instrument according to claim 1 or 2.

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