JPH03285123A - Weight sorting apparatus - Google Patents

Abstract

PURPOSE:To allow even an inexperienced person to easily comprehend all the information including the judging result or the like by displaying a pattern showing the judging result, a bar graph, a cumulative value of judgements and a histogram thereof. CONSTITUTION:The weight of an object W carried onto a measuring conveyor 4 is output through an A/D converter 21 from a measuring instrument 5. A judging means 22 judges whether the measuring value is within a preset allow able range, with outputting a judging signal. Thereafter, a judging pattern corresponding to the judging result is displayed at a predetermined position of a graphic display means 40. The size of the count is indicated by a bar graph display means 26. Moreover, a carry-in conveyor 29, a pass counter 30, an over counter 31 and an under counter 32 accumulate and count the inputting number of times of the judging signals indicating the same judging result when they receive the judging signals. A plurability of cumulative counts are graphycally displayed 40. A histogram of the cumulative count by means 34 every time the same judging result is obtained is indicated at 35. The total of all the display means is indicated on one screen of the display means 40.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of Application of the Present Invention The present invention relates to a heavy sorting device that weighs conveyed articles and performs a sorting judgment on the weight of the articles.

<Prior Art> On the production line, the weight of the products is measured while they are being transported through the line, and the products are sorted based on the weight.

FIG. 6 is a schematic diagram showing the construction of a weight screening device used for this purpose.

In FIG. 6, 1 is a carry-in conveyor that carries the articles W into the weight sorting device 3, and 2 is a sorting conveyor that changes the transport route of the articles W in accordance with a determination signal from the weight sorting device 3.

The weight sorting device 3 uses a scale 5 to measure the weight of the articles carried onto the weighing conveyor 4 and outputs the measured value to the determination section 6.

The determination unit 6 determines whether or not this weighed value is within a preset tolerance range, and sends a determination signal indicating an over, under, or bass determination result to the sorting conveyor 2 and the display 11.
i1JIl] unit 7.

display! ! The IIJII section 7 causes the LED displays 8.9.10 to display the determination results and the measured values, respectively.

The LED display 8 has three LEDs 8a corresponding to the judgment results.
, 8b, and 8C, and it is judged as over (7)! : Kiha LE
D8c is lit, ED8b is lit when a pass is determined, and ED8a is lit when an under is determined.

Further, the LED indicators 9 and 10 are for numerical display and display the upper limit, lower limit, etc. of the allowable range.

When the article W is carried into the weight sorting device 3 configured in this way, its weighing value is determined by the determination section 6, and a determination signal corresponding to the determination result is output to the sorting conveyor 2, and the result is The corresponding LED of the LED display 8 will light up, and I! The sorting determination results for the incoming articles W can be visually recognized from the outside.

However, in this type of weight sorting device, it is desirable that in addition to being able to visually check the judgment results for each weighing, it is also possible to visually check the state of weight bias of produced articles from cumulative information of the judgment results over a certain period of time.

For this reason, conventionally, in order to make this type of display possible with a limited number of display devices, the LE
The displays on the D displays 9 and 10 were switched so that the cumulative value of the judgment results and the like could be displayed.

Problems to be Solved〉 However, with the above-mentioned weight sorting device, it is necessary to switch the display in order to know all the information related to the judgment results, etc., so if you are not an experienced operator, you can read this information once. There was the inconvenience of not being able to grasp the

In addition, as shown in #, LED displays with no display flexibility have limited display capabilities, so when you want to provide a display with higher visibility for the operator or when you want to display three or more types of judgment results, There is a problem in that it cannot be handled without adding a dedicated display, and its versatility is low.

An object of the present invention is to provide a weight sorting device that solves this problem.

Means for Solving the Problems> In order to solve the above problems, the weight sorting device of the present invention includes a graphic display capable of displaying any graphic, and whether or not the weighed value is within a preset tolerance range. a determination means for determining and outputting a determination signal indicating the determination result; a determination result display means for receiving the determination signal and displaying a determination figure in accordance with the determination result at a predetermined display position of a graphic display; a bar graph display for displaying the size as a bar graph at a predetermined display position of a graphic display; a plurality of counting means that receive a judgment signal and cumulatively count the number of inputs of judgment signals indicating the same judgment result; Judgment cumulative value display means for displaying the cumulative count values of each at a predetermined display position of the graphic display; and a histogram display of the cumulative count value for each judgment result by the judgment cumulative display means at a predetermined display position of the graphic display. and histogram display means.

<Operation> Therefore, each time an article is brought in, a judgment figure corresponding to the judgment result based on the weight of the article is displayed at a predetermined display position of the graphic display along with a bar graph indicating the size of the counted value, and the judgment result is displayed. 1/Iel! The four counted values and their histograms are displayed at predetermined display positions on the same display surface of the graph ink display.

<Example of the present invention> An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a weight sorting device 20 according to an embodiment.

In FIG. 1, the weight value of the article W carried into the weighing conveyor 4 of the weight sorting device [20] is outputted from the weighing device 5 via the AD converter 21.

22 is an upper limit value W (U) and a lower limit value W (L) of the allowable weight range set in advance in the upper and lower limit setting means 23 and an AD converter 21
This is a judgment means that compares the input weight value with the input weight value, and outputs a pass signal when the input weight value is within the allowable weight range, an over signal when it is larger than the allowable weight range, and an under signal when it is smaller than the allowable weight range. Output.

25 is a determination result for displaying the figures shown in (a>, (b), and (c)) in FIG. 2, which correspond to these three determination results, respectively, in a predetermined display area A of a graphic display H40, which will be described later, as a size R figure. It is a display means.

26 is a graphic display 40 that displays weight values in the form of a bar graph.
is a bar graph display means that is displayed in a predetermined display area B of the bar graph scale, and its resolution and resolution are automatically set so that the difference between the upper and lower limit values W (IJ) and W (L) becomes a predetermined width at the center of the bar graph scale. Ru.

27 is a performance means for calculating the average value and standard deviation value of the weight values input from the AD converter 21, and these average values Wa, σ are displayed in a predetermined display area C of the graphic display 40 by the statistical value display means 28. Is displayed.

29 is a carry-in counter that counts the number of articles brought in; 30 is a pass counter that counts the number of times a pass signal is output from the determining means 22; 31 is an over counter that also counts the number of times that an over signal is output; and 32 is an under signal counter. This is an under counter that counts the number of outputs.

33 is an external NG counter that counts the number of times a signal indicating a defect is output from another inspection device (for example, a metal detector, etc.) installed on the line together with this weight sorting device @20.

34 is a judgment cumulative value display means for displaying the values of each of the counters 29 to 33 in a predetermined display area E of the graphic display 40.

35 is a histogram display means for displaying the count values of the bus counter 30, over counter 31, and under counter 32 as a histogram in a predetermined display area of the graphic display 40.

The graphic display 40 is an EL type display capable of displaying at a higher speed than a liquid crystal display, and has a display surface large enough to display all the displays by each display means on one screen.

Next, the processing procedure of the determination means and each display means will be explained based on the flowchart of FIG.

First, the Hergraph scale, statistical item names (average and standard deviation), count item names, and histogram item names are displayed in their respective display areas as shown in FIG. 4 (steps 1 to 4).

Next, each counter 29 to 33 is initialized, and the counter value is displayed at the position corresponding to the corresponding count item name, and the average weight value and standard deviation value of the weight values are displayed next to the item name. (Steps 5-7).

Next, the maximum value M of the count values of the bus counter 30, over counter 31, and under counter 32×, Y, and Z is determined, and based on this M, the length of the histogram Hx,
Hy,t-(z is calculated and displayed (step 8.9).

Further, a determination is made as to whether a signal indicating a defect is input from the outside, and if a defect signal is input, the value of N is increased by "'1" (step 10.11).

Here, when an article is brought in and its II value W is output, a comparison judgment is made with respect to the upper and lower limit values Wll) and W(L), and the judgment figure according to the judgment result is shown in Fig. 5 (in this case, pass). will be displayed for a predetermined period of time, and the corresponding count value will be displayed as “
1” (steps 12-20).

Also, the M quasi-weight value W' is subtracted from this weight value W, and the number of bars obtained by dividing the subtraction result S by the weight value P per bar is displayed as a bar graph in order from the left side as shown in Figure 5. (Steps 21 and 22).

When the display of the judgment figure and the bar graph display are completed, T is incremented by "1" and the process returns to step 5, where each count value is updated and displayed (step 23).

Thereafter, similar operations are repeated until the end of the operation is instructed (step 24).

Note that the histogram is plotted in X and Y at the maximum value M so that the length of the maximum judgment result is always the same.

Since it is displayed as a value divided by Z, a long histogram is displayed even when the number of articles brought in is small, and the ratio of each determination result can be clearly seen.

Other Embodiments of the Present Invention It should be noted that the display layout and shape of figures in the above embodiments can be modified in various ways, and are not limited to this embodiment.

Furthermore, in the above embodiment, the case where there are three types of determination results has been explained, but in the case where multiple types of determination results are to be determined within a path and articles are to be more finely sorted, the above processing procedure may be expanded. (Increase the definition of judgment figures, the number of counters, etc.).

Effects of the Present Invention> As described above, the weight sorting device of the present invention is capable of displaying a figure indicating the judgment result, a bar graph, a judgment cumulative value, and its histogram in a predetermined display area on the display surface of the graphic display. Because of this, in addition to the classification results for each item brought in, it is possible to visually check the deviation of the weight of the items within a certain period without switching operations, and even non-experienced users can see most of the information including the classification results. All information can be easily grasped.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
Figure 2 is a diagram explaining the display figures of the main parts of one embodiment;
The figure is a flowchart showing the processing procedure of one embodiment, and FIGS. 4 and 5 are diagrams showing display screens of one embodiment. FIG. 6 is a schematic diagram showing the configuration of a conventional device. 4...Weighing conveyor, 5...Measuring device,
20...Weight sorting device, 21...AD
Converter, 22... Judgment means, 25...
Judgment result display means, 26... Bar graph display means, 30... Bus counter, 31...
Over counter, 32...under counter. 34... Judgment! A value display means, 35...auto...
- Histogram display means, 40...Graphic display means. Figure 4

Claims (1)

[Scope of Claims] A weight sorting device that measures the weight of conveyed articles and performs a sorting judgment on the weight of the articles based on the measured value, comprising: a graphic display capable of displaying an arbitrary figure; determining means for determining whether or not it is within a set tolerance range and outputting a determination signal indicating the determination result; and receiving the determination signal from the determining means and displaying the determined figure according to the determination result graphically. a determination result display means for displaying the magnitude of the measured value in a predetermined display position of the device; a bar graph display means for displaying the magnitude of the measured value in a bar graph at a predetermined display position of the graphic display; receiving a determination signal from the determination means; a plurality of counting means for cumulatively counting the number of inputs of judgment signals indicating the same judgment result; a judgment cumulative value display means for displaying the plurality of cumulative count values at predetermined display positions of the graphic display; and the judgment cumulative value. histogram display means for displaying the cumulative count value for each identical determination result by the display means in a histogram at a predetermined display position of the graphic display, the determination results, bar graphs, cumulative determination values, and histograms being displayed on the same graphic display. A weight sorting device characterized by displaying all information on a display screen.