Production management device

Abstract

To enable analysis of a true cause easily, to enable reduction in downtime of a production line.SOLUTION: A production management device 10 includes: an acquisition unit 11 for acquiring information from an inspection machine; a display unit 12; and a control unit 13 for controlling the display in the display unit 12 based on the above information. The acquisition unit 11 acquires information regarding the inspection of an article in the inspection machine as the above information. The control unit 13, based on the above information, causes the display unit 12 to display the number of inspections in the inspection machine per unit time and the number of cycle operations of an article processing device per unit time simultaneously and in a time series manner. The number of cycle operations of the article processing device shows the sum of the number of cycle operations in which articles are actually discharged in the article processing device and the number of cycle operations in which articles are not discharged in the article processing device.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a production management device. [Background technology]

[0002] 2. Description of the Related Art Conventionally, techniques for detecting abnormalities on a production line, such as the presence of foreign matter, weight defects, or broken bags, are known using various inspection machines. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication 2018-17538 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned production line, the production volume of non-defective products on the entire production line can be grasped from the number of inspections performed by each inspection machine alone, but there is a problem in that it is not possible to analyze the true cause when the production volume does not reach the target.

[0005] Therefore, the present invention has been made in consideration of the above problems, and has an object to provide a production management device that enables easy analysis of the root cause and reduces downtime of the production line. [Means for solving the problem]

[0006] The production management device of one embodiment is a production management device connected to an inspection machine that inspects items discharged from an item processing device that processes and discharges items, and comprises an acquisition unit that acquires information from the inspection machine, a display unit, and a control unit that controls the display on the display unit based on the information, wherein the acquisition unit acquires information related to the inspection of the items in the inspection machine as the information, and the control unit, based on the information, causes the display unit to simultaneously display in chronological order the number of inspections by the inspection machine per unit time and the number of cycle operations of the item processing device per unit time, and the number of cycle operations of the item processing device indicates the sum of the number of cycle operations in which the item processing device actually discharged the items and the number of cycle operations in which the item processing device did not discharge items. Effect of the Invention

[0007] According to the present invention, it is possible to provide a production management device that enables easy analysis of the root cause and reduction of downtime of the production line. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram illustrating an example of the overall configuration of a production line 1 according to a first embodiment. [Diagram 2] FIG. 2 is a diagram showing an example of functional blocks of the production management device 10 according to the first embodiment. [Diagram 3] FIG. 3 is a diagram showing an example of a display by the display unit 12 of the production management device 10 according to the first embodiment. [Figure 4] FIG. 4 is a diagram for explaining an example of a method in which the control unit 13 of the production management apparatus 10 according to the first embodiment calculates the number of cycle operations of the article processing apparatus in a predetermined period. [Diagram 5] FIG. 5 is a diagram showing an example of the availability rate of the entire production line 1 estimated by the control unit 13 of the production management device 10 according to the first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In the following description of the drawings, the same or similar parts are given the same or similar reference numerals. However, it should be noted that the drawings are schematic and the ratios of the dimensions are different from the actual ones. Therefore, the specific dimensions should be determined with reference to the following description. In addition, the drawings may include parts with different dimensional relationships and ratios. In this specification and the drawings, elements having substantially the same functions and configurations are given the same reference numerals to avoid repeated explanations, and elements not directly related to the present invention are not illustrated.

[0010] (First embodiment) Hereinafter, a production line 1 according to a first embodiment of the present invention will be described with reference to Fig. 1 to Fig. 5. Fig. 1 is a diagram for explaining an example of the overall configuration of the production line 1 according to the first embodiment, Fig. 2 is a diagram showing an example of functional blocks of the production management device 10 according to the first embodiment, Fig. 3 is a diagram showing an example of a display by the display unit 12 of the production management device 10 according to the first embodiment, Fig. 4 is a diagram for explaining an example of a method by which the control unit 13 of the production management device 10 according to the first embodiment calculates the number of cycle operations of the item processing device in a predetermined period, and Fig. 5 is a diagram showing an example of the operation rate of the entire production line 1 estimated by the control unit 13 of the production management device 10 according to the first embodiment.

[0011] As shown in FIG. 1, the production line 1 of this embodiment includes a combination weighing device 2, a packaging machine 3, a seal checker 4, a metal inspection machine 5, an X-ray inspection device 6, a weight checker 7, a packing device 8, and a production management device 10.

[0012] The combination weighing device 2 is a device that calculates the weight of the objects supplied from the transport conveyor arranged upstream so as to reach a target weight value, and supplies the objects to a downstream device (in this embodiment, a packaging machine 3). The packaging machine 3 is a device that packages the objects supplied from the combination weighing device 2.

[0013] The seal checker 4 is a device that inspects whether the seal of the bag containing the article is completely sealed. The metal inspection machine 5 is a device that inspects whether any metallic foreign matter has been mixed into the above-mentioned bag. The X-ray inspection device 6 is a device that inspects whether any foreign matter has been mixed into the above-mentioned bag by detecting the X-rays that have passed through the bag. The weight checker 7 is a device that weighs the article (bag) transported on the belt conveyor while it is being transported, and verifies that the weight is between a preset upper and lower limit.

[0014] The boxing device 8 is a device that packs the articles (bags) that have passed through the weight checker 7 into boxes such as cardboard boxes.

[0015] In this embodiment, a case has been illustrated in which the combination weighing device 2, packaging machine 3, seal checker 4, metal inspection machine 5, X-ray inspection machine 6, weight checker 7, and case packing machine 8 are arranged from upstream to downstream in the production line 1, but the present invention is not limited to such a case, and other devices may be included, or one or more of the above-mentioned devices may not be included. Also, the order in which the seal checker 4, metal inspection machine 5, and X-ray inspection machine 6 are arranged may be different from that in this embodiment.

[0016] In this embodiment, the production management device 10 is connected to each of the combination weighing device 2, the packaging machine 3, the seal checker 4, the metal inspection machine 5, the X-ray inspection device 6, the weight checker 7 and the boxing device 8.

[0017] Here, in this embodiment, the combination weighing device 2 is taken as an example of such an article processing device, but the present invention is not limited to this. Similarly, in this embodiment, the weight checker 7 is taken as an example of an inspection device that inspects articles discharged from an article processing device that processes and discharges articles, but the present invention is not limited to this.

[0018] As shown in FIG. 2, the production management device 10 includes an acquisition unit 11, a display unit 12, and a control unit 13.

[0019] The acquiring unit 11 acquires information from the weight checker 7 (inspection machine). Specifically, the acquiring unit 11 acquires, as such information, information related to the inspection of an item in the weight checker 7 (inspection machine).

[0020] The acquiring unit 11 may acquire information from the combination weighing device 2. The acquiring unit 11 may also acquire information from the seal checker 4, the metal inspection machine 5, or the X-ray inspection device 6.

[0021] The display unit 12 displays various information in response to instructions from the control unit 13, which will be described later. For example, the display unit 12 displays a screen shown in FIG.

[0022] The control unit 13 controls the display on the display unit 12 based on the information acquired from the weight checker 7.

[0023] Specifically, based on the information obtained from the weight checker 7, the control unit 13 causes the display unit 12 to simultaneously display in chronological order the number of inspections performed by the weight checker 7 per unit time and the number of cycle operations of the combination weighing device 2 per unit time.

[0024] Here, the number of cycle operations of the combination weighing device 2 refers to the sum of the number of cycle operations in which the combination weighing device 2 actually discharged an article and the number of miss cycle operations in the combination weighing device 2. Note that the number of miss cycle operations of the combination weighing device 2 refers to the number of cycle operations in which the combination weighing device 2 did not discharge an article.

[0025] For example, in response to instructions from the control unit 13, the display unit 12 simultaneously displays in chronological order the number of inspections performed by the weight checker 7 per unit time ("number of inspections") and the number of cycle operations performed by the combination weighing device 2 per unit time ("number of cycles"), as shown in Figure 3(b).

[0026] The display unit 12 may also simultaneously display the number of articles detected as abnormal by the weight checker 7 (inspection machine) per unit time ("NG") in chronological order, as shown in Fig. 3(b). The vertical axis of Fig. 3(b) is expressed in number per minute.

[0027] Here, in Fig. 3(a), "number of inspections" indicates the number of inspections (total number) by the weight checker 7 in the previous unit time, and "number of cycles" indicates the number of cycle operations of the combination weighing device 2 in the previous unit time. In the example of Fig. 3(a), the "number of inspections" is 41294, and the "number of cycles" is 52460. The guideline for the "number of cycles" per unit time is 50 to 150 / min or 3000 to 10000 / hour.

[0028] Furthermore, as shown in FIG. 3(a), the display unit 12 may display the number of articles normally inspected by the weight checker 7 in the previous unit time ("normal number of articles"=40043).

[0029] Furthermore, the display unit 12 may display a breakdown of the number of articles for which an abnormality has been detected by the weight checker 7 per unit time, as shown in Figs. 3(c) and 3(d).

[0030] Here, "2 on" indicates the number of items that could not be weighed accurately because adjacent items (bags) were close to each other on the conveyor belt. "2 consecutive bags" indicates the number of items that could not be weighed accurately because adjacent items (bags) were transported connected to each other on the conveyor belt due to reasons such as poor cutting in the packaging machine 3. "Overweight" indicates the number of bags with a weight exceeding the upper limit that were transported to the weight checker 7 within a certain period of time. "Lightweight" indicates the number of bags with a weight below the lower limit that were transported to the weight checker 7 within a certain period of time. "External 1" indicates the number of error signals received from a first inspection machine (e.g., a metal inspection machine) connected to the weight checker 7. "External 2" indicates the number of error signals received from a second inspection machine (e.g., an X-ray inspection device) connected to the weight checker 7.

[0031] In addition, based on the information obtained from the weight checker 7, the control unit 13 may cause the display unit 12 to simultaneously display in chronological order the number of inspections by the weight checker 7 per unit time, the number of cycle operations of the combination weighing device 2 per unit time, and the number of miscycle operations of the combination weighing device 2 per unit time.

[0032] The weight checker 7 may be connected to the combination weighing device 2. In this case, the acquisition unit 11 acquires, from the combination weighing device 2, the number of cycle operations of the combination weighing device 2 per unit time as the above-mentioned information.

[0033] According to this configuration, it is possible to display an accurate number of cycle operations of the combination weighing device 2 per unit time.

[0034] On the other hand, when the weight checker 7 is not connected to the combination weighing device 2, the control unit 13 calculates the number of cycle operations of the combination weighing device 2 in a specified period shorter than the unit time by analyzing the number of inspections in the weight checker 7.

[0035] Specifically, as shown in FIG. 4, first, the control unit 13 divides one hour into 360 intervals (predetermined period=10 seconds), and obtains the number of inspections by the weight checker 7 for each predetermined period.

[0036] Secondly, the control unit 13 calculates the number of cycle operations of the combination weighing device 2 per unit time by multiplying the number of sections in which the number of inspections within the specified period is one or more by the set number of cycle operations of the combination weighing device per specified period.

[0037] Then, the control unit 13 causes the display unit 13 to display the number of cycle operations of the combination weighing device 2 per unit time based on the calculation result (see FIG. 3(b)).

[0038] According to this configuration, even if the weight checker 7 is not connected to the combination weighing device 2, it is possible to display the number of cycle operations of the combination weighing device 2 per unit time.

[0039] Additionally, control unit 13 may cause display unit 12 to display the number of bags produced per unit time.

[0040] Fig. 5 shows an example of the availability rate of the entire production line 1 estimated by the control unit 13. In the example of Fig. 5, the bar graph shows the actual value of the number of cycle operations in which articles were actually discharged by the combination weighing device 2 per hour ("number of non-defective items") and the actual value of the number of miscycle operations of the combination weighing device 2 per hour ("number of defective cycles"), and the line graph shows the estimated value of the availability rate of each of production lines A to C per hour.

[0041] Here, the number of articles normally inspected by the weight checker 7 (inspection machine) per unit time is the number of bags produced per unit time.

[0042] Specifically, the control unit 13 calculates the number of bags produced per unit time by (the number of set cycle operations of the combination weighing device 2 per unit time) x (the operation rate of the combination weighing device 2) x (the quality rate of the combination weighing device 2).

[0043] The control unit 13 may calculate the quality rate of the combination weighing device 2 by dividing the number of cycles in which the combination weighing device 2 actually discharged articles by the number of cycles of the combination weighing device 2.

[0044] For example, in production line C shown in Figure 5, the availability rate drops at 10:00 and 13:00, and it can be seen that the availability rate is high in the morning but the quality rate is low, whereas both the availability rate and the quality rate are high in the morning. From this, it is possible to identify the problem areas of the production line with a single graph.

[0045] Furthermore, the control unit 13 may cause the display unit 12 to display an ideal value for at least one of the number of inspections by the weight checker 7 per unit time and the number of cycle operations in which articles are actually discharged by the combination weighing device 2 per unit time. Here, such ideal value is a value that is obtained when the entire production line 1 operates as set.

[0046] According to this configuration, the number of inspections by the weight checker 7 per unit time and the number of cycle operations in which articles are actually discharged by the combination weighing device 2 per unit time can be easily compared with ideal values.

[0047] According to the production management device 10 of this embodiment, bottlenecks in the production line 1 can be identified at a glance, making it easier to consider measures to improve productivity and contributing to reducing downtime on the production line 1.

[0048] Furthermore, the production management device 10 according to the present embodiment displays the transition for each unit time, making it possible to confirm the effect of any action taken on a graph.

[0049] Although the present invention has been described in detail using the above-mentioned embodiment, it is clear to those skilled in the art that the present invention is not limited to the embodiment described in the present specification. The present invention can be implemented in modified and altered forms without departing from the spirit and scope of the present invention defined by the description of the claims. Therefore, the description in this specification is intended to be illustrative and does not have any limiting meaning on the present invention. [Explanation of symbols]

[0050] 1. Production line 2...Combination weighing device (item processing device) 3...Wrapping machine 4…Seal checker 5…Metal inspection machine 6…X-ray inspection equipment 7. Weight checker 8...Boxing device 10...Production control device 11…Acquisition part 12...Display section 13...Control section

Claims

1. A production management device connected to an inspection machine that inspects an item discharged from an item processing device that processes and discharges the item, An acquisition unit that acquires information from the inspection machine; A display unit; a control unit that controls a display on the display unit based on the information, The acquisition unit acquires, as the information, information regarding the inspection of the item by the inspection machine, the control unit causes the display unit to simultaneously display, in chronological order, the number of inspections performed by the inspection machine per unit time and the number of cycle operations of the article processing device per unit time based on the information; A production management device, wherein the number of cycle operations of the item processing device indicates the sum of the number of cycle operations in which the item processing device actually discharged the item and the number of cycle operations in which the item processing device did not discharge the item.

2. the control unit causes the display unit to simultaneously display in chronological order the number of inspections by the inspection machine per unit time, the number of cycle operations of the article processing device per unit time, and the number of miscycle operations of the article processing device per unit time, based on the information; 2. The production management device according to claim 1, wherein the number of missed cycle operations of the article processing device indicates the number of cycle operations in which the article processing device did not discharge the article.

3. connected to the article processing device; The production management device according to claim 1 , wherein the acquisition unit acquires, from the item processing device, a number of cycle operations of the item processing device as the information.

4. The control unit is calculating a number of cycle operations of the article processing device in a predetermined period shorter than the unit time by analyzing the number of inspections in the inspection machine; 2. The production management device according to claim 1, further comprising: a display unit that displays the number of cycle operations of the article processing device per unit time based on the calculation result.

5. The production management device according to claim 1 , wherein the control unit causes the display unit to display the number of bags produced per unit time.

6. 2. The production management device according to claim 1, wherein the control unit causes the display unit to display an ideal value of at least one of the number of inspections by the inspection machine per unit time and the number of cycle operations of the article processing device per unit time.

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