JP3039416U - Net weighing scale - Google Patents

Abstract

(57) [Summary] [Purpose] To display or print only the net weight of a load or a storage item in a vehicle equipped with a load or a container or the like in which a storage item is stored. [Structure] Within the range of maximum weighing assumed in advance, the total weight including the object to be weighed and the vehicle or container on which the object to be weighed is loaded or stored, and the weight of the vehicle or the container only (tare) are weighed twice. A platform 1 for storing and a storage unit 2 for storing the measured values twice.
And a calculation unit 3 that calculates the difference between the two measured values to calculate the net weight value of the object to be weighed, and a net weighing display unit that displays only the net weight within a presumed maximum net weighing range. Four
The net weighing display unit 4 is characterized by displaying or printing the difference between the first weighing value and the second weighing value with the first weighing value as a reference point.

Description

[Detailed description of the invention]

[Field of Industrial Application] [0001] The present invention, when weighing a vehicle with a load, or a container or the like containing a stored item, excludes the vehicle or the container (tare). It relates to a net weighing scale that displays only the net weight of a stored item.

2. Description of the Related Art Conventionally, in a vehicle loaded with a load, a container loaded with a stored item, or the like, the net weight of an object to be weighed, such as the loaded item or stored item, is measured by a weighing scale. The weighing method to be weighed is to display from 0, to display or print the total weight of the object to be weighed at the first time, and then to the empty state where the object to be weighed is removed at the second time, that is, Only the container (tare) was weighed and displayed or printed, and then the difference in both weights was calculated to display or print the net weight. Therefore, since the container is also weighed to calculate the net weight, a scale with a heavier weighing (weight) is used more than necessary, and the minimum scale (1 scale) value becomes large and the weighing accuracy becomes large. The sex is declining.

[0003] For example, in a tea factory, when weighing fresh tea leaves loaded on a truck up to 1t, a truck scale of 4t is used, and as shown in FIG. The total weight of raw tea leaves was measured as 3 t as shown in FIG. 7, and the value was displayed on the display unit 11 or printed by the printing unit 5. Next, if the weight of only the truck is weighed 2t in the second weighing, the numerical value is displayed on the display unit 11 or printed by the printing unit 5 as shown in FIG. Calculate the difference value, that is, the net weight 1t of tea leaves by operating both the second and second numerical values, operate the key switch 7 for counting, and display it on the display unit 11 or print it on the printing unit 5. Was there. Therefore, the weighing scale range requires 0 to 4 tons as shown in FIG. 7 because various trucks have different weights and some margin is required, and the minimum scale (1 scale) is 1 kg or 2 kg.

Conventional scales manufactured by conventional measuring instrument manufacturers include electronic digital scales and mechanical scales, but the display method is the same. For example, a 4t weighing scale has a maximum weighing of 4t, a minimum scale (1 scale) is 1kg or 2kg, a 1t weighing scale has a maximum weighing of 1t, a minimum scale of 200g or 500g, and a weighing use range is from 20kg to 1t. . In the digital display, for example, in the case of 0 to 2 kg, the range of 0 to 0.5 kg or less is not normally displayed as shown in FIG. 5, and the range of 0.5 to 1.5 kg is rounded to 1 kg. Therefore, the accurate measured value was not displayed.

In addition, in the calibration, in the case of an electronic digital scale, first, it is confirmed that the used parts are normal, and the minimum scale of the scale is determined depending on how much the net weighing range is relative to the maximum weighing range. Do more than double the precision. At the time of calibration, place nothing on the mounting table 1 and use the weight with the display O displayed. For example, when the maximum weighing range is 4t and the net weighing range is 2t, the minimum scale is 4 times, and when the maximum weighing range is 4t and the net weighing range is 1t, the minimum scale is 8 times. Finally, how many times the accuracy should be measured is calibrated within the range where the net weighing range with respect to the maximum weighing range of the scale does not cause an error. When calibrating, perform with the maximum weighing range displayed.

[Problems to be solved by the invention] [0006] The conventional display of a scale is to display or print by weighing the total weight of a vehicle, a container, or the like in a state where a load or storage of an object to be weighed is loaded and stored. Since it is adapted to do so, the weighing range from 0 to the maximum weighing value becomes large, and the numerical value of the minimum scale (1 scale) becomes large. For example, in the case of a 4t scale, the minimum scale is usually 1kg or 2kg, Weighing accuracy was apt to decrease and become inaccurate. Further, since the digital display is normally rounded off, there is a drawback that the accuracy of measurement is further lowered as shown in FIG. The present invention is a net weighing scale that displays only the net weight, and is printed as needed. Therefore, it is possible to improve the weighing accuracy by reducing the weighing value of the minimum scale (1 scale). .

[Means for Solving the Problems] The present invention is to provide an object to be weighed, a vehicle on which the object to be weighed is loaded or stored, a total weight including a container, and a vehicle within a range of maximum weighing assumed in advance. Alternatively, a weighing unit that weighs the weight of only the container (tare) twice, a storage unit that stores the weighted value of each time twice, and the difference between the weighted values is calculated to calculate the net weight value of the object to be weighed. It is composed of a calculation unit to calculate, a net weighing display unit that displays the weighing value of only the net weight within the presumed maximum net weighing range, and a printing unit 5 that prints together with the display. A net weighing scale that displays or prints the difference between the first and second weighing values, using the first weighing value as a reference point. For example, the difference value is positive (plus) or negative (minus) indication. To do.

[Operation] The operation will be described with reference to one embodiment shown in FIGS. The net scale according to the present invention is a scale used only when weighing twice. Normally, the net weighing display unit 4 displays 0 for the first weighing and before the second weighing. The weighing unit 1 weighs twice. The first time, the weighing unit 1 weighs the total weight including the weight of objects to be weighed such as loads and stored items and the weight of vehicles and containers (tare). When the weighing is completed, press the key switch 6 to store it in the storage unit 2. At the second time, the weight (tare) of the vehicle, container, etc. is weighed, and when the weighing is completed, press the key switch 6 to store it in the storage unit 2 again. , The measured value is not displayed. Next, press the aggregation key switch 7 to calculate the difference value between the first weighing and the second weighing, and use the first weighing value as the reference point (0 point) for the first weighing and the second weighing. The difference, that is, the net weight is displayed or printed on the net weighing display unit 4. The difference value can be displayed as a positive (plus) or negative (mice) value. For example, a case of a net weighing scale having a weighing (net weighing range) of 1 t, a maximum weighing range of 4 t, and a minimum scale of 200 g will be described with reference to FIG. 2. The first weighing value is 3 t and the second weighing value is If it is smaller than the first weighing, the difference value, that is, the net weight value is displayed as negative (minus), and if the second weighing is larger than the first weighing, the net weight value is positive ( Plus) is displayed.

Since the display of the net weighing unit 4 displays only the net weight within the presumed maximum net weight range, only the net weight of the difference value calculated by the calculation unit 2 is displayed as the first weighing value. It is displayed on the positive side (+) or the negative side (-) as a reference point, and is printed by the printing unit 5 as necessary. Therefore, since the net weight is displayed as (+) (-), the order of the first weighing and the second weighing may be either total weight or container weight (tare).

Therefore, since the net weight display unit 4 displays only the net weight, the displayed numerical value and the display scale can be subdivided in comparison with the display of the total weight, and the display of the measured value is accurate and the weighing accuracy is improved. Can be raised. In addition, when calibrating the weight of the weighing display, the calibration device 8 is used with an accuracy of 2 to 8 times the scale (minimum scale) of the net weighing, and during maintenance and inspection, the weight corresponding to the weighing display range is used. However, the present invention requires a heavy weight corresponding to the total weight.However, the present invention is a conventional scale that weighs with a truck or container that is as heavy as or more than net weighing (substantial weighing). Unlike the above, the display is a narrow and light weighing range only for the net weight, so a light weight is sufficient.

[Embodiment] As shown in FIG. 1, the present invention comprises a weighing unit 1, a storage unit 2, a computing unit 3 and a net weighing display unit 4, and a net weighing display unit 4 and a printing unit 5 as required. It is a net weighing scale that is configured by connecting an aggregator 9, an OA device 10 in series, and weighs twice to display a substantial net weighing value. A net weighing scale is a range of presumed maximum load capacity (total weight), and within the presumed maximum net weighing range, two weighings are calculated and the net weight is displayed or printed. Scales, limited to electronic digital scales. The maximum load capacity and the maximum weighing range may be the same, but they are not necessarily the same weight. In order to maintain the safety of the weighing unit 1 (mounting table), the structure is to withstand the maximum weighing range, so the maximum load capacity is usually larger than the maximum weighing range.

The net weighing scale according to the present invention is used when determining the net weight by two weighings. Usually, the first weighing is the total of the object to be weighed and the container containing the object to be weighed. The weight is weighed, and the second weighing weighs only that container and displays or prints the difference between the two weights, that is, only the net weight. In this case, since the first weighing and the second weighing may be opposite, the net weight is displayed as a difference value with the first weighing as the reference point (0 point). The difference value may be displayed as positive (plus) and negative (minus), or only the difference value may be displayed.

A description will be given with reference to the embodiment shown in FIG. The platform 1 weighs the total weight including the object to be weighed and the container containing the object to be weighed at the first time, or the weight of only the container, and at the next second time, only the weight of the container (tare), Alternatively, the total weight of the object to be weighed and its container is weighed, and the storage unit 2 stores the two weighing values by operating the key switch 6 each time. The calculation unit 3 calculates the net weight value of the object to be weighed by calculating the difference value between the two weighing values input from the storage unit 2 by operating the tally key switch 7, and the net weighing display unit 4 assumes this. Only the net weight, which is the difference between the two weighing values within the net weighing range, is displayed with the first weighing value as the reference point (0 point) or the difference value, or positive or negative.

For example, in the case where only the net weight of the objects to be weighed to be loaded or stored is to be weighed, the maximum weighing range 4t, the net weighing range 1t, and the minimum scale (1 scale) 200g are used. As shown in the example, when the total weight of the first weighing is 3t and the second weighing is smaller than the first weighing, the first weighing is used as the reference point (0 point) and the net weight is on the negative (-) side. It is displayed in the 1t range, and when it is larger than the first weighing, it is displayed in the 1t range on the positive (+) side. In this case, the net weighing display unit 4 displays the assumed net weighing range in the range of 3t to 4t on the positive side and 2t to 3t on the negative side, and ± 1t (2t range) is the net weighing range.

Further, as illustrated in FIG. 3, the maximum weighing range is 4t, the net weighing range is 1t, and the minimum scale (1 scale) is 200g. If the first weighing is 1,5t, then 1,5t is calculated. As the reference point (0 point), the net weighing range (+ side) is 1,5t to 2,5t (-side) 0.5t to 1,5t, ± 1t, that is, 0.5t to 2.5t. Is the net weighing range. FIG. 4 shows a net weighing range, a maximum weighing range, and a minimum scale which are similar to those of the embodiment shown in FIG. 3, and is a net weighing scale in consideration of the case where the second weighing is always smaller than the first weighing. The net weighing range is 1t on the (-) side, that is, 2,96t, with the third weighing 3,96t as the reference point (0 point).

[Effects of the Invention] The present invention calculates and displays or prints only the net weight of the object to be weighed within the maximum weighing range. The display method is the first weighing and the second weighing. Since only the net weight of the difference in weighing is displayed as positive and negative (+,-), the scale is expanded and the displayed values are subdivided into smaller pieces compared to the conventional method of weighing and displaying the total weight. Can be displayed. Therefore, when the net weighing scale according to the present invention is used and the net weighing display range is set to 1 t on a scale capable of weighing 4 t, the minimum scale within that range was 1 kg or 2 kg in the past, but 500 g. Or, it becomes 200 g, and more accurate weighing becomes possible. When weighing 40t or 50t trucks, the weight of the truck or container is 2 to 3 times the net weight, so the difference in the minimum scale becomes even larger, and the effect of the present invention is Increase. As described above, the present invention accurately displays the weighing value and enhances the weighing precision, and the weighing efficiency is improved because only the net weight is displayed. In addition, since the weight of the net weight is used during calibration, the weight used is light, maintenance and inspection are easy, and the cost is reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a weighing procedure and operation in one embodiment of the present invention.

FIG. 3 is an explanatory view of a weighing procedure and operation in another embodiment of the present invention.

FIG. 4 is an explanatory view of a weighing procedure and an operation in another embodiment of the present invention.

FIG. 5 is an explanatory diagram of a minimum scale (scale) of a digital weighing scale.

FIG. 6 is a configuration diagram of a conventional weighing display device.

FIG. 7 is an explanatory view of a weighing procedure and operation of a conventional weighing scale.

[Explanation of symbols]

 1 platform 2 storage unit 3 computing unit 4 net weighing display unit 5 printing unit 6 key switch 7 key switch for counting 8 calibration unit 9 counting machine 10 OA device 11 display unit

Claims (1)

[Utility model registration claims] 1. The total weight including an object to be weighed and a vehicle or a container on which the object to be weighed is loaded or stored, and a weight (tare) of only the vehicle or the container, within a range of maximum weighing assumed in advance. A platform 1 that weighs twice, a storage unit 2 that stores the weighed values twice, a calculation unit 3 that calculates the difference between the two measured values to calculate the net weight value of the object to be weighed, and a previously assumed maximum Within the net weighing range, the net weighing display unit 4 displays only the net weight, and the net weighing display unit 4 displays the first weighing value and the second weighing value with the first weighing value as a reference point. A net weighing scale characterized by displaying the difference value between the second weighing values.