Measuring value-attached device and control program for measuring value-attached device

Abstract

To prevent erroneous weighing even when the weight of a product to be weighed changes significantly.SOLUTION: A measured weight labeling device 1 is provided, comprising: weighing means 30, 30a for measuring the weight of a product or a sample; and display means 12a configured to display a product weight upper limit computed on the basis of a uniformly set weight upper limit proportion and weight of the sample weighed by the weighing means.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a weighing value attaching device and a control program for the weighing value attaching device.

Background Art

[0002] When issuing a label to be attached to a weighed product (also referred to as an "indeterminate weight product") whose price is determined according to its weight, there is known a weighing value attaching device that values a product based on the weight value of the product and price data per unit weight, and prints it on the label.

[0003] Therefore, there is a need for a technique to reliably prevent valuation based on an incorrect weighing result (for example, Prior Art Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Patent Document 1 discloses a weighing management system in which upper and lower limit values of the weight of a product to be packed are set.

[0006] In the system of Patent Document 1, upper and lower limit values of weight are set for each type of product. However, even for products of the same type, the packed amount per pack may vary depending on the working day, the worker, or the production volume of the day, etc., and may not be uniform.

[0007] Therefore, one object of the present invention is to be able to prevent incorrect weighing even when the weight of a product to be weighed changes significantly.

Means for Solving the Problems

[0008] To achieve the above object, a weighing value-adding device according to one aspect of the present invention includes weighing means for weighing the weight of a product or a sample, an upper limit ratio of the weight set uniformly, and display means for displaying an upper limit value of the weight of the product calculated based on the weight of the sample weighed by the weighing means.

Brief Description of Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0010] Hereinafter, a weighing value-adding device according to an embodiment of the present invention will be described with reference to the drawings. ● Outline of the weighing value-adding device FIG. 1 is a schematic diagram of a metering value attaching device (which is also a metering value attaching label issuing device and a label issuing device) 1 according to a first embodiment of the present invention. This metering value attaching device 1 is installed, for example, in the backyard of a store and is a device for metering various products. A product is, for example, an item in which the contents such as food are placed on a tray and enclosed in a plastic film or a plastic case or the like.

[0011] In addition, the metering value attaching device 1 performs a value attaching process for determining the price of a product based on the metering result, and an issuing process for issuing a label on which this price is printed. The issued label is attached to various products or product containers. The value attaching process and the issuing process may each be included in one hardware configuration together with the functional unit that performs the metering process, or a part or all of them may be realized by different hardware configurations. In this case, the metering value attaching device 1 has a communication processing unit that transmits data for the value attaching process including at least the metering result to an external device such as another terminal or server. The other terminal or server performs the value attaching process based on the data.

[0012] As shown in the figure, the metering value attaching device 1 includes a conveyor 11, a display 12, a sensor 13, a labeler 14, a power cylinder 15, a labeler lift adjustment switch 16, a labeler front - rear adjustment switch 17, a switch group 18, and a control unit 20.

[0013] The conveyor 11 is a device for conveying products. The conveyor 11 conveys products from left to right in the figure. The conveyor 11 is composed of an in - feed conveyor 11a, a scale conveyor 11b, and a labeler conveyor 11c arranged in this order in the conveying direction. The in - feed conveyor 11a is a conveyor on which products are placed. The scale conveyor 11b is a conveyor disposed above the load cell 30a and conveys the products on the load cell 30a. Also, the weight of the products is measured on the conveyor 11b. The labeler conveyor 11c is a conveyor disposed below the labeler 14, and labels are attached to the products on this conveyor. The conveyor 11 is an example of a conveying means.

[0014] The display 12 has a structure in which a touch panel 12b is laminated on a liquid crystal display 12a, enabling data display and input on the same surface. The liquid crystal display 12a is an example of a display means. The sensor 13 is a sensor that detects products on the conveyor 11. The sensor 13 has, for example, a first sensor 13a and a second sensor 13b disposed downstream of the first sensor 13a. In this embodiment, the first sensor 13a is disposed on the side of the infeed conveyor 11a and detects products on the infeed conveyor 11a. The second sensor 13b is disposed on the side of the scale conveyor 11b and detects products on the scale conveyor 11b.

[0015] The labeler 14 is a mechanism that prints a label to be attached to a product and attaches the printed label to the product. The labeler 14 is suspended and supported by a power cylinder 15. The labeler lift adjustment switch 16 and the labeler front-back adjustment switch 17 can operate the power cylinder 15 in response to being pressed, and adjust the height of the labeler 14 with respect to the labeler conveyor 11c and the position in the front-back direction of the conveyance direction. Also, when a product is conveyed onto the labeler conveyor 11c, the labeler 14 has an appropriate suction unit that supports the printed label move up and down, and attaches the label to the upper surface of the product.

[0016] Note that the metering device 1 may have a plurality of labelers 14. For example, the metering device 1 may have three labelers 14, with two disposed above the conveyor 11 and one disposed below. In this case, the upper labeler 14 attaches a label to the upper surface of the product, and the lower labeler 14 attaches a label to the lower surface of the product.

[0017] The switch group 18 mainly has a main power switch 18a, an operation lamp 18b, an emergency stop switch 18c, a conveyor operation switch 18d, and a conveyor stop switch 18e of the metering device 1. Note that the switch group 18 is not limited to this, and may have switches capable of inputting various commands. The switch group 18 may have, for example, a zero reset key.

[0018] FIG. 2 is a schematic diagram showing an example of a label E issued by the metering device 1. In addition to the product name, the label E displays the price per unit quantity such as 100 g, the weight of the contents in the product, and the price of the product obtained by multiplying the price per unit quantity by the weight of the contents. Further, on the label E, a barcode readable by a reading device, an expiration date or a consumption date, information about the producer, information about the seller, etc. are printed together.

[0019] FIG. 3 is a block diagram showing the configuration of the metering device 1. The metering device 1 includes a control unit 20, a metering unit 30, a printing unit 40, an attaching unit 50, and an input / output unit 60. The metering unit 30 includes a load cell 30a and measures the weight of the product on the scale conveyor 11b. That is, the area on the scale conveyor 11b is the metering area of the metering unit 30. The metering unit 30 and the load cell 30a are examples of metering means. The printing unit 40 has a label issuing unit 40a. The label issuing unit 40a prints a label. The printing control unit 23, the printing unit 40, and the label issuing unit 40a are examples of label issuing means. The attaching unit 50 has an attaching mechanism unit 50a. The attaching mechanism unit 50a attaches the printed label to the product on the labeler conveyor 11c. The label issuing unit 40a and the attaching mechanism unit 50a are included in the labeler 14.

[0020] The input / output unit 60 includes a display 12 and a switch group 18. The display 12 has a structure in which a touch panel 12b is laminated on a liquid crystal display 12a, and the liquid crystal display 12a is an example of display means for displaying various data. When the finger of the operator touches the touch panel 12b, the touched position is detected and an input corresponding to the detected position is received.

[0021] The control unit 20 includes a CPU 21, a load cell control unit 22, a printing control unit 23, an attaching control unit 24, an operation control unit 25, a ROM 26, and a RAM 27. The CPU 21 is interconnected with each part included in the control unit 20 via a bus.

[0022] The CPU 21 reads out the control program stored in the ROM 26 and various information stored in the RAM 27, and controls each part based on the read control program and various information. Also, the CPU 21 stores necessary information in the RAM 27. The ROM 26 stores various information such as various programs executed in the CPU 21. The load cell control unit 22 controls the load cell 30a provided in the weighing unit 30. The printing control unit 23 controls the printing unit 40. The pasting control unit 24 controls the pasting unit 50. The operation control unit 25 controls the touch panel 12b and the switch group 18. The display control unit 28 controls the liquid crystal display 12a. The RAM 27 is a temporary storage area that stores information used by the CPU 21. Also, the RAM 27 is a storage means for storing various files.

[0023] Note that the CPU 21 is also an input control unit that acquires information input to the touch panel 12b or the switch group 18 via the operation control unit 25.

[0024] Also, the CPU 21 is also an output control unit that changes the display content of the weighing issuance screen G1 described below to be displayed on the touch panel 12b. The output control unit is configured to output various information to be transmitted to the operator. Instead of or in addition to the configuration of controlling the liquid crystal display 12a to display information as described above, other methods such as sound may be used.

[0025] ● Functional units Here, the configuration of the software resources of the weighing value attaching device 1 will be described together with an example of a screen displayed by the operation of the software resources. The metering value-added device 1 shown in FIG. 3 includes, in the control unit 20, an arithmetic device such as a CPU 21 for executing information processing, and storage devices such as a RAM 27 and a ROM 26, and thereby includes at least an information acquisition unit, an allowable value calculation unit, a metering unit, and a determination unit as software resources. The control unit 20 executes a computer program for controlling the metering value-added device 1. The computer program can be provided by downloading via a network such as the Internet, or can be provided by recording on various computer-readable recording media such as a CD-ROM.

[0026] The information acquisition unit is a functional unit that acquires information from an external device such as a server connected through a network. The information acquisition unit acquires the allowable range of the product weight, the product master including information about the product, and the previous value of the tare weight. Note that the acquired information is an example.

[0027] The product master is information that stores product information, price information, etc. in association with the identification information (PLU code) of the product. In addition, the product master stores the tare weight defined for each product, that is, the defined weight of the tare.

[0028] The allowable range of the product weight is information indicated by a ratio to the reference value of the product weight. The allowable range is composed of, for example, information indicating the upper limit and the lower limit of the product weight. The ratio to the reference value is specifically defined as a percentage. For example, it is stored that the upper limit ratio of the weight is 140% of the reference value. Also, it is stored that the lower limit ratio of the weight is 50% of the reference value. The upper limit ratio and the lower limit ratio can be changed by the input of an operator. In this embodiment, the upper limit ratio and the lower limit ratio are stored with respect to the reference value, but may be set evenly in a manner such as "±40% with respect to the reference value".

[0029] Regardless of the type of product, the allowable range of the product weight is uniformly stored as a ratio to the weight. According to this configuration, it is not necessary to store the allowable value for each product, and the configuration is simple. The allowable range is, for example, the upper limit is 140% of the reference value and the lower limit is 50% of the reference value.

[0030] Note that the allowable range of the product weight may be stored for each product. In the case of foods with high price data per unit weight, if the allowable range is large, the price variation for each product will be large. In such products, it is possible to make adjustments such as making the allowable range narrower than that of other products to make the price variation for each product more uniform.

[0031] The previous value of the tare weight is the tare weight set immediately before the zero reset is performed.

[0032] Note that in this embodiment, the information acquired by the information acquisition unit is stored in the storage unit of an external device such as a server. However, in addition to or instead of this configuration, the metering device 1 may have a storage unit that stores some or all of the percentage of the upper and lower limit values of the weight, the product master, the allowable range of the product weight, and the previous value of the tare weight. In this case, the information acquisition unit may acquire information from the storage unit of the metering device 1.

[0033] The allowable value calculation unit is a functional unit that calculates the allowable value of the weight of the product based on the reference value of the product weight and the allowable range of the product weight indicated as a ratio to the reference value. The reference value of the product weight is, for example, the weight of a sample product measured by the scale conveyor 11b before the production of the product. The sample product is, for example, a product produced by actually placing the product on a tray. According to this configuration, the reference value can be set by the sample product assembled by the operator scheduled to work. That is, it is possible to set the reference value considering the variation in assembly for each operator. Also, by producing a sample product in consideration of the assembly quantity on the working day, it is possible to set the reference value considering the variation for each working day. Furthermore, the weight of the sample product may be adjusted according to the production quantity on the day, the destination store, etc. Note that the sample product may be an article whose weight is known in advance instead of the same tray and contents as the actual product.

[0034] The allowable value calculation unit calculates the allowable value of the product weight based on the weight of the sample product measured by the weighing unit 30 and the allowable range of the product weight indicated as a ratio to the reference value. For example, when the weight of the sample product is 300 g, the upper limit ratio of the weight is 140% of the reference value, and the lower limit ratio of the weight is 50% of the reference value, the allowable value calculation unit calculates that the upper limit value of the product weight is 420 g and the lower limit value is 150 g.

[0035] The weighing unit is a functional unit that weighs the object to be weighed placed on the scale conveyor 11b. The weighing unit refers to the tare weight, performs tare removal processing from the weighing result, and calculates the weight of the contents on the liquid crystal display 12a. The data of the weight of the contents is referred to by the determination unit and the label issuing unit 40a.

[0036] The determination unit is a functional unit that determines whether the label issuing unit 40a issues a label based on the weight of the product and the upper limit value or the lower limit value. The determination unit refers to the allowable value and determines whether the product weight measured by the weighing unit 30 is within the allowable range. Further, when the product weight exceeds the allowable range, the determination unit prohibits the issuance of the label to be attached to the product. In other words, when the product weight exceeds the upper limit value, the label issuing unit 40a does not issue the label to be attached to the product. Also, when the product weight is below the lower limit value, the label issuing unit 40a does not issue the label to be attached to the product. At this time, the operation of the conveyor 11 does not stop. As a result, since no label is attached to the product whose weight is measured outside the allowable range, the operator can visually discriminate it downstream of the weighing value attaching device 1. Further, according to this configuration, compared with the configuration that stops the conveyor 11, it is not necessary to stop the production line of the product, so the production efficiency can be maintained.

[0037] Further, the determination unit may be connected to the weighing value attaching device 1 and transmit a signal to the sorting device disposed downstream in the conveyance direction of the conveyor 11 to convey the product along a path different from that of the product whose product weight is within the allowable range. Furthermore, the determination unit may display an error screen on the liquid crystal display 12a via the display control unit 28, and may notify the operator by an appropriate configuration such as a beep sound, a sound such as voice, or light that can be sensed by the operator.

[0038] Note that the product to which no label is attached due to mismeasurement is collected by the operator and placed again on the infeed conveyor 11a of the weighing value attaching device 1. At this time, the operator may place the products one by one on the infeed conveyor 11a so that they are surely conveyed one by one on the scale conveyor 11b. At this time, the operator may place the product after changing the setting on the allowable value setting screen G2 described later so that the determination unit does not make a determination.

[0039] According to such a configuration, since at least the upper limit of the product weight is defined as a percentage instead of a weight value, the upper limit value can be automatically set based on the weight of the sample product. Therefore, compared with a configuration in which an allowable range is set for each product, even in a usage mode where the reference value of the product to be measured varies greatly depending on the destination store, working day, or worker, the upper limit value can be easily set simply by passing the sample product before the operation. For example, when two products are accidentally conveyed onto the scale conveyor 11b, a value approximately twice the reference value is measured. According to the present invention, such an incorrect measurement can be reliably prevented. When preventing incorrect measurement of two products, the upper limit ratio may be set to be smaller than twice the reference value.

[0040] Further, according to a configuration in which the lower limit of the product weight is defined as a percentage and the lower limit value is automatically set based on the weight of the sample product, it can be reliably detected when only the tray is accidentally conveyed.

[0041] ● Screen example FIG. 4 is an example of a weighing and issuing screen G1 displayed on the liquid crystal display 12a. As shown in the figure, on the weighing and issuing screen G1, a weighed value column G11, a product information column G12, an issuing operation column G13, a status display column G14, etc. are displayed. Further, in the lower left part of the weighing and issuing screen G1, information such as the total number of issued labels, the number of issued labels, the issuing method, the identification information of the container, the specified content volume, the upper and lower limits of the weight of the content volume, etc. are displayed, and a setting column G15 for accepting changes to these settings is provided.

[0042] The weighed value column G11 has a tare weight column G11a, a weighed value column G11b, a unit price column G11c, and a price column G11d.

[0043] The tare weight column G11a displays the value of the tare weight referred to in the tare removal process. The weighed value column G11b displays the value obtained by removing the tare from the value measured by the scale conveyor 11b. Further, when the weighed value after tare removal is displayed in the weighed value column G11b, a display indicating that tare removal has been performed is made in the weighed value column G11b.

[0044] In addition, when a zero reset process is input by the touch panel 12b or the switch group 18, "0" is displayed in the tare weight column G11a and the measured value column G11b.

[0045] The unit price column G11c is a column in which the unit price of the called product, that is, the price per unit weight, is displayed. Here, the price per 100 g is displayed. The price column G11d displays the price of the product calculated based on the unit price of the product and the measured value.

[0046] The product information column G12 displays product information such as the product name, delivery method, product number, store number, expiration date, and manufacturing date.

[0047] For products that are weighed, the product information can be input in the following ways: directly inputting the product number to call it, selecting it by referring to a pre-stored product list, calling the product numbers before and after the currently displayed product, calling it with a preset key, etc. Also, the classification of the product is stored together, and it may be called from the classification or sub-classification of the product. Furthermore, by selecting a group (also referred to as a "line") registered in advance according to various sales periods, etc., it may be possible to call the products belonging to the line.

[0048] Furthermore, the product information may also be called from the history of products for which value attachment and label issuance have been performed. Here, by selecting a date from the date selection screen, it may be configured to extract the product name for which the selected date is the final value attachment date. At this time, separately from the date selection screen, by pressing an icon for "Today's work", it may be possible to display the history of products for which labels were issued on the current day. Furthermore, it may also be called by a search using keywords. Furthermore, products with a large number of label issuance times or product information call times may be displayed in descending order of the number of times, and a product may be selectable from the display. Furthermore, by scanning the barcode of the product, it may be possible to call the information of the product.

[0049] The weighing and issuing screen G1 in FIG. 4 indicates a state where label issuing is stopped and key operations are acceptable. When each area of the setting column G15 is pressed, the screen transitions to a setting screen corresponding to the content displayed in the area. In the setting column G15, a "weight upper limit" column G15a and a "weight lower limit" column G15b are displayed on the same screen. Further, in the "weight upper limit" column G15a, it is indicated that the upper limit relative to the reference value is "140%" in percentage, and in the "weight lower limit" column G15b, it is indicated that the upper limit relative to the reference value is "50%" in percentage. When the "weight upper limit" column G15a or the "weight lower limit" column G15b is pressed, the screen transitions to FIG. 5(a).

[0050] FIGS. 5(a) and (b) are diagrams showing examples of the allowable value setting screen G2 displayed on the weighing and metering device 1. As shown in the figure, on the allowable value setting screen G2, mainly, a setting button G2a, a weight value display area G2b, a change selection area G2c, an OK button G2d, a clear button G2e, and a cancel button G2f are displayed. When the weight of the sample product is acquired, the liquid crystal display 12a displays the upper limit value and the lower limit value of the allowable value on the same screen, that is, in the weight value display area G2b. According to this configuration, compared with the mode in which the allowable range is set for each product, even when the filling quantity of the same product varies depending on the work content, work date, or worker, the allowable range can be easily set, and incorrect weighing can be prevented. Note that the upper limit value and the lower limit value displayed in the weight value display area G2b are automatically displayed as values calculated from the weight of the sample product and the ratio, but it is also possible to arbitrarily change the upper limit value and the lower limit value by a touch operation on the touch panel 12b or an operation of a physical numeric keypad or the like.

[0051] Note that FIG. 9 is a diagram showing another example of the tolerance value setting screen G102. In this figure, a ratio display area G2g for displaying the allowable range of the product weight as a ratio to the reference value of the product weight is displayed beside the weight value display area G2b. According to this configuration, since the numerical values referred to for calculating the tolerance value are clearly shown, it is easy for the operator to understand. Note that the ratio display area G2g may display a ratio set uniformly instead of for each product for reference, and may be configured such that the ratio cannot be changed on the tolerance value setting screen G102, or the ratio may be changeable on the tolerance value setting screen G102 and an arbitrary ratio may be set for the displayed product (here, the harusame salad).

[0052] The setting button G2a is an operator that accepts a selection as to whether or not the determination unit determines the product weight via an input to the touch panel 12b. The setting button G2a is an example of an input means. The setting button G2a is composed of two lamp displays arranged in parallel from left to right. For example, a green lamp is displayed on the left side and a red lamp is displayed on the right side. FIG. 5(a) is a screen where it is selected that the determination unit makes a determination, the green lamp of the setting button G2a is lit, and "Checked" is displayed above it. FIG. 5(b) is a screen where it is selected that the determination unit does not make a determination, the red lamp of the setting button G2a is lit, and "Not Checked" is displayed above it. As shown in FIG. 6, when it is selected in the setting button G2a that the determination unit does not determine the product weight, on the weighing issuance screen G1, the upper limit value and the lower limit value of the weight are displayed as "Not Checked".

[0053] The change selection area G2c shown in FIG. 5 is an area that accepts a selection as to whether to make the changes displayed in the setting button G2a and the weight value display area G2b only for this time or to make all the changes in subsequent operations.

[0054] ● Procedure for weighing a sample product An example of the process of weighing a sample product to obtain the reference value of the product weight and the allowable value of the product weight will be described. For example, when a product is called on the weighing issuance screen G1, the weighing value attachment device 1 causes a message prompting the weighing of the sample product to be displayed on the liquid crystal display 12a. Also, operations other than product calling, such as operating buttons for setting the allowable range, may be used as a trigger. The product calling and button operations on the weighing issuance screen G1 are each examples of predetermined operations, but both are just examples. Specifically, characters such as "Set the weight range. Please place one product of average weight" are displayed on the liquid crystal display 12a. Also, the conveyor 11 may start operating at this time. When the operator places the sample product on the infeed conveyor 11a, the sample product is conveyed to the scale conveyor 11b and weighed by the weighing unit 30. Note that the operator may place the sample product directly on the scale conveyor 11b. When the sample product is weighed, at least the upper limit value of the product weight is displayed on the liquid crystal display 12a. A message such as "The weight of the product is 300 g. Set the upper limit to 420 g and the lower limit to 150 g." is displayed on the liquid crystal display 12a. Also, a ledger label to be pasted on the work ledger for recording the work content is issued. According to this configuration, since the sample product is weighed when issuing the ledger label required for work management, it is efficient.

[0055] The ledger label has, for example, part or all of the content of the product label pasted on the product printed thereon, and a display indicating that it is for the ledger is printed. Also, the sample product weight as the reference value of the product weight, as well as the upper limit value and lower limit value of the product weight, may be printed on the ledger label. According to this configuration, the allowable range of the product weight, that is, the allowable upper limit value and lower limit value, can be easily recorded in the work ledger.

[0056] ● Operations during tare setting Here, the operation when performing the zero reset process on the measured value measured by the scale conveyor 11b will be described. The metering device 1 periodically checks the zero point state during the label issuance process, and when there is a deviation of a predetermined value or more, it issues a warning prompting the operator to interrupt the label issuance process and perform a zero reset process command.

[0057] When the metering device 1 receives a zero reset process command via the switch group 18 or the touch panel 12b, it stops the operation of the conveyor 11. The liquid crystal display 12a displays a message "Clear the tare for zero reset and stop the conveyor". After the above message is displayed for a predetermined time, the metering unit 30 performs the zero reset process with the conveyor 11, at least the scale conveyor 11b stopped. Note that the liquid crystal display 12a may display a message prompting a zero reset process command again when the metering unit 30 fails in the zero reset process. Also, when the conveyor operation switch 18d is pressed in a state where the zero reset process fails and the tare is not reset, a warning may be displayed on the liquid crystal display 12a.

[0058] FIG. 7 is an example of a pop-up screen G3 displayed together with the zero reset process. As shown in the figure, on the pop-up screen G3, it is displayed that the tare has been cleared because the zero reset has been performed, and that the tare is to be reset. Also, when the tare is reset, it is displayed that the conveyor 11 operates. Further, on the pop-up screen G3, the previous value of the tare weight ( "7" in the figure) is displayed. And when using the previous value as the tare weight for subsequent metering, guidance is displayed to press the "Confirm" button. When the metering device 1, for example, resets the tare weight by pressing the "Confirm" button, it resumes the operation of the conveyor 11.

[0059] As another aspect, instead of configuring to input the tare weight or refer to the previous value, it may be configured to measure the actual weight of the tare. In this case, a message "The conveyor will stop for tare setting." is displayed for a predetermined time, and the conveyor 11 stops after or simultaneously with the display. Next, a message "Place a tray on the scale and press the confirm button." is displayed. When a tray is placed on the scale conveyor 11b and the weighing is successful, a message "The tare setting is complete. Start the conveyor. Please remove the items on the scale." is displayed. When the operator removes the tray and presses the confirm button, the tare weight is reset and the operation of the conveyor 11 is started. Also, when the weighing of the tray fails, a message prompting the operator to place the tray again and press the confirm button is displayed.

[0060] In a state where the conveyor 11, particularly the scale conveyor 11b that conveys goods on the load cell 30a, is operating, it has been difficult to perform accurate zero reset processing because the load cell 30a is unstable. Therefore, it was necessary to stop the conveyor 11 before the zero reset processing and restart the operation of the conveyor 11 after the zero reset processing, but this operation was cumbersome for the operator. On the other hand, according to this configuration, since the conveyor 11 is automatically stopped in conjunction with the zero reset operation, the zero reset processing can be easily performed.

[0061] Note that when the liquid crystal display 12a receives an input to perform zero reset and the conveyor 11 is stopped, it displays a message "Clear the tare for zero reset." Also, in this case, after the tare is reset, the conveyor 11 is not operated.

[0062] Here, when the operator presses the "Confirm" button via the switch group 18 or the touch panel 12b, the input control unit receives this input and determines the reference value of the tare weight. According to such a configuration, the tare weight can be easily set even after the tare is cleared by zero reset. This reference value is displayed in the tare weight column G11a on the weighing issuance screen G1.

[0063] ●Processing Flow Using FIG. 8(a), the processing flow for calculating the allowable range of the product weight will be described. As shown in the figure, first, the weight of the sample product is measured (step S11). Also, the ratio of the allowable weight is obtained (step S12). Steps S11 and S12 can be in any order and may be performed simultaneously. Next, based on the weight of the sample product and the ratio of the allowable weight, the upper limit value and the lower limit value of the product weight are calculated (step S13).

[0064] More specifically, in step S12, the ratio with respect to the upper limit value or the lower limit value of the product weight is obtained, and in step S13, based on the weight of the sample product and the ratio of the upper limit value or the lower limit value, the upper limit value or the lower limit value of the product weight is calculated. Next, the upper limit value and the lower limit value are displayed on the same screen (step S14).

[0065] Next, using FIG. 8(b), the processing flow for determining the pass / fail of the product based on the allowable range of the product weight will be described. As shown in the figure, first, the weight of the product is measured (step S21). It is determined whether the product weight is within the allowable range, that is, smaller than the upper limit value and larger than the lower limit value (step S22). If it is within the allowable range, a label is issued (step S23) and attached to the product (step S24). In step S22, if the product weight exceeds the allowable range, the issuance of the label is prohibited (step S25).

[0066] According to the metering device according to the present embodiment described above, since the weight of the sample product is used as a reference value and the upper limit value and the lower limit value of the product are determined by the ratio with respect to the reference value, even when the reference value changes significantly depending on the working day or the operator in the same product, incorrect metering can be prevented.

[0067] ●Summary of Embodiment The present invention relates to a metering device and a control program for the metering device.

[0068] When issuing a label to be attached to a weighed commodity (also referred to as an "indeterminate weight commodity") whose price is determined according to its weight, a weighing and pricing device is known that prices the commodity based on the weight value of the commodity and the price data per unit weight, and prints the weighed value on the label.

[0069] Therefore, there is a need for a technique to reliably prevent pricing based on incorrect weighing results (for example, Japanese Patent Application Laid-Open No. 2009-036554).

[0070] The above-mentioned document discloses a weighing management system in which an upper limit value and a lower limit value of the weight of a commodity to be packed are set.

[0071] In the above-mentioned system, an upper limit value and a lower limit value of the weight are set for each type of commodity. However, even for the same type of commodity, the amount packed per pack may vary depending on the working day, the worker, or the production volume of the day, etc., and may not be uniform.

[0072] Therefore, one object of the present invention is to be able to prevent incorrect weighing even when the weight of the commodity to be weighed changes significantly.

[0073] To achieve the above object, a weighing and pricing device according to one aspect of the present invention includes weighing means for weighing the weight of a commodity or a sample, an upper limit ratio of the weight set uniformly, and display means for displaying an upper limit value of the weight of the commodity calculated based on the weight of the sample weighed by the weighing means.

[0074] The display means may display a message prompting to weigh the sample in response to a predetermined operation, and display an upper limit value of the weight of the commodity calculated based on the weight of the sample weighed when the message is displayed.

[0075] Further comprising label issuing means for issuing a label printed with the price of the commodity calculated based on the weight of the commodity and the price data per unit weight of the commodity, wherein the label issuing means may not issue the label when the weight of the commodity measured by the weighing means exceeds the upper limit value.

[0076] It may further comprise determination means for determining whether or not the label issuing means issues the label based on the weight of the commodity and the upper limit value, and input means for receiving a selection as to whether or not the determination means makes the determination.

[0077] The display means may display, as the lower limit value of the weight, a numerical value calculated based on the weight of the sample and the lower limit ratio to the weight of the commodity.

[0078] The display means may display the upper limit value and the lower limit value on the same screen.

[0079] It may further comprise conveying means for conveying the commodity on the weighing means, and when receiving a zero reset processing command for the weighing means, the conveying means may stop operating.

[0080] To achieve the above object, a control program for a weighing value-adding device according to another aspect of the present invention causes a computer to execute a weighing command for weighing the weight of a commodity or a sample, a uniformly set upper limit ratio of the weight, and a display command for displaying an upper limit value of the weight of the commodity calculated based on the weight of the sample weighed by the weighing command.

[0081] According to the weighing value-adding device of the present invention, even when the weight of the commodity to be weighed changes greatly, misweighing can be prevented.

Explanation of Signs

[0082] 1 Weighing value-adding device 11 Conveyor 11b Scale conveyor 12 Display means 15 Labeler G1 Measurement and issuance screen G2 Tolerance setting screen

Claims

1. Measuring means for measuring the object to be measured, An upper limit ratio of weights set uniformly, and display means for displaying an upper limit value of the weight of the object to be measured, calculated based on the weight measured by the measuring means, Conveying means for conveying the object to be measured, comprising When the measuring means receives a zero reset processing command, it clears the set tare weight, and when it receives an input to set the cleared tare weight as the tare weight, it resets the cleared tare weight again, When the conveying means receives the zero reset processing command, it stops the conveyance, and when the tare weight is set, it resumes the conveyance, A weighing device with weighing value.

2. The display means is configured to be able to display, in response to the reception of the zero reset processing command by the measuring means, whether to set the cleared tare weight as the tare weight or to newly set the tare weight. The weighing device with weighing value according to Claim 1.

3. When the display means receives an operation instruction for the conveying means in a state where the tare weight is not set, it displays a warning. The weighing device with weighing value according to Claim 1 or 2.

4. A weighing command for weighing the object to be measured, An upper limit ratio of weights set uniformly, and a display command for displaying an upper limit value of the weight of the object to be measured, calculated based on the weight measured by the weighing command, A conveyance command for controlling the conveyance means to convey the object to be measured, A command to clear the set tare weight when receiving a zero reset processing command, A command to reset the cleared tare weight again when receiving an input to set the cleared tare weight as the tare weight, A command to stop the conveyance by the conveyance means when receiving the zero reset processing command, and to resume the conveyance by the conveyance means when the tare weight is set. A control program for a metering device that causes a computer to execute it.

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