JP4297231B2 - Abnormality detection device for bagging and packaging machines - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an abnormality detection device that detects an abnormality that occurs during operation of a bagging and packaging machine and displays the abnormality.
[0002]
[Prior art]
In a bag filling and packaging machine, sucker for bag supply and opening of bag mouth, rubber provided on bag gripping claw, heater wire for sealing, tape provided on the front surface, type and ink for date stamp, sponge provided on press deaeration plate If parts (consumables) such as degassing filters, cam followers, vacuum chamber packing, etc. gradually deteriorate over time, they will not function properly. In addition, defects such as a bag opening failure, a gripping position defect, and a seal defect occur.
An abnormality detection device that detects such a defect and displays the date and time of occurrence of the defect, a specific content of the defect, a countermeasure, and the like on the display, or stores these and displays them on the display as necessary is known. (For example, JP-A-2-180130, JP-A-3-226446, JP-A-5-147625, and Japanese Patent No. 2867926).
[0003]
[Problems to be solved by the invention]
However, in spite of the fact that the corresponding part has not deteriorated, a failure may occur accidentally and be detected. If all such things are displayed on the display and warned, the number of operator confirmation operations will increase, resulting in an increase in the burden on the operator's work and, at the same time, depending on the type of defect, the operation of the bagging and packaging machine will be increased. There is a need to stop, significantly reducing productivity.
In addition, many defects are detected as the parts deteriorate. At this time, if the parts are replaced early, the detection of defects is reduced and the productivity is improved. On the other hand, the production cost increases due to the cost of the parts. To do. The operator decides the optimum replacement time for each part in consideration of the balance between the productivity and the production cost. Conventionally, this determination is left to each operator, so the replacement time is uneven.
[0004]
The present invention has been made in view of the above-mentioned problems of the conventional abnormality detection device in the bag-packing and packaging machine, and is not confused by accidental defects, and reliably determines abnormality in response to defects caused by deterioration of parts. The purpose is to display the type of the defect so as to prevent unevenness in the replacement timing of the corresponding part.
[0005]
[Means for Solving the Problems]
The abnormality detection device for a bag-packing and packaging machine according to the present invention (Claim 1) is the same as a detection unit that detects a defect in the packaging process, and a defect detected by the detection unit under a preset count condition. A control device that determines an abnormality when the count number of types of defects reaches a preset value and a display device that displays the types of defects determined to be abnormal are provided. Here, the count condition is a population serving as a reference when counting the number of defects, and corresponds to, for example, the production number (the number of supplied bags) or the production time. Therefore, in the present invention, when the number of defects reaches the set value within the production number or production time set as appropriate, it is determined that there is an abnormality.
[0006]
In addition, as a specific form of the counting condition, if this is the production number, for example, it is divided into groups of 100 pieces in order from the first bag supply, and the number of defects in each group is counted, or always updated In the same way, if the production time is, for example, the time is divided every hour from the start of operation on the day, and each hour The number of defects can be counted, or the latest one hour can always be used as a population, and the number of defects can be counted. Further, it is desirable that the count number serving as a count condition or / and an abnormality determination standard can be set for each type of defect.
[0007]
The abnormality detection device for a bag-packing and packaging machine according to the present invention (Claim 2) has a detection means for detecting a defect in the packaging process and a continuous count of the same type of defect detected by the detection means at a preset value. It is characterized by comprising a control device that determines that an abnormality has occurred when it reaches, and a display device that displays the type of failure determined to be abnormal. In this case, it is desirable that the continuous count number serving as an abnormality determination criterion can be set for each type of defect.
[0008]
An abnormality detection device for a bag-packing and packaging machine according to the present invention (Claim 3) detects a defect in a packaging process, and counts the defect detected by the detector under a preset count condition. A failure rate is continuously calculated for each type, and a control device that determines an abnormality when the failure rate reaches a preset value and a display device that displays the type of failure determined to be abnormal are provided. It is characterized by. The present invention is different from the invention of claim 1 in that the criterion for determining abnormality is the defect rate. It is desirable that the defect rate serving as a count condition or / and an abnormality determination criterion can be set for each type of defect.
[0009]
Further, as a specific form of the abnormality detection device, the control device stops the bagging and packaging machine at the same time as or instead of outputting the type of defect determined to be abnormal to the display device (claim). Item 4), storage means for storing data related to the contents of abnormality determination, such as date and time when it is determined as abnormal, type of defect, count condition, count number, continuous count number, defect rate, and the like It is possible to include an operation means for outputting to the display device (claim 6).
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the abnormality detection apparatus according to the present invention will be described more specifically with reference to FIGS.
FIG. 1 is a diagram showing a flow of detection in an abnormality detection device applied to, for example, a well-known rotary bagging and packaging machine, and the detection means corresponds to the process according to the process such as defective bag supply, defective bag supply position, defective opening, etc. Are detected, and control based on the count number of defects and control based on the continuous count number are performed. This will be described in order.
[0011]
(1) Detection of the number of bags supplied and defective bag supply Here, detection means (for example, piping connected to a suction cup for vacuum suction of empty bags) is taken out to a delivery device that takes out empty bags from an empty bag stocker and delivers them to a gripper of a packaging machine. The vacuum switch is installed), and the control device counts the removal failure in response to the removal error detection signal from this detection means (6), and it is abnormal when the count reaches the set value under the set count conditions. And display on the display (7). At the same time, if the takeout failure continues, it is counted (8), and when the continuous count reaches the set value, it is determined to be abnormal, displayed on the display and the packaging machine is stopped (9). When the take-out error is interrupted (when normal take-out is possible after the take-out error), the continuous count is stopped, and the continuous count is reset to zero. At the same time, the control device counts the actual number of empty bags taken out (total number of bags supplied) by the signal from the detection means (4) and displays it on the display (5).
If a bag supply defect is detected, the subsequent packaging process for the corresponding bag (the bag is not actually supplied to the gripper) is not performed, and naturally, the defect detection is not performed in the subsequent process. It has become.
[0012]
(2) Detection of bag supply position Here, each detection means (for example, a phototube) detects whether or not the four corners of the bag held by the gripper of the packaging machine at the bag supply position are in predetermined positions. When the position failure signal is output from the control device, the control device counts it, and when the count number reaches the set value under the set count condition, it determines that it is abnormal and displays it on the display (10 to 17). At the same time, the control device counts the position defect detected by the detecting means (any detecting means may be continued) and counts it (18). When the continuous count reaches the set value, it is determined as abnormal and displayed on the display. And the packaging machine is stopped (19).
If a bag feeding position defect is detected, the subsequent packaging process for the corresponding bag is not performed (conveyed without being subjected to the packaging process and discharged at the end) as in the previous case, and the subsequent process is defective. Detection is not performed. This point is the same in all cases. When a defect is detected on the upstream side of the process, the packaging process is not performed on the downstream side of the corresponding bag, and the defect is not detected.
[0013]
(3) Opening detection Here, detection means (for example, a vacuum switch installed in a pipe connected to the suction cup that opens the bag surface by vacuum suction from both sides) is installed in the opening device that opens the bag mouth of the bag held by the gripper. In response to the opening defect detection signal from the detection means, the control device counts the opening defect (20), and when the count reaches the set value under the set count condition, it is determined as abnormal and displayed on the display. (21). At the same time, if there are consecutive opening defects, it is counted (22), and when the continuous count reaches the set value, it is determined to be abnormal, and displayed on the display and the packaging machine is stopped (23).
Note that the same defect detection is performed in the subsequent steps, but the description thereof is omitted.
[0014]
FIG. 2 is a diagram showing the flow of control. This will be described in order.
(31) Detection by detection means If a defect is detected by a detection means in a certain step (33), if it continues, it is continuously counted (34), and when the continuous count number reaches a set value, it is determined to be abnormal. (35) It is displayed on the display and the packaging machine is stopped (36), and maintenance such as replacement of parts is performed (37). The continuous count of defect detection is reset to zero when a non-defective product is detected next to the defect (40). At the same time as the continuous count, a failure is counted under the set count condition (38), and when the count reaches the set value, it is determined to be abnormal (39) and displayed on the display (36). If necessary, maintenance such as stopping the packaging machine and replacing parts is performed (37).
It should be noted that the defect rate may be calculated from the defect count (41), thereby determining the abnormality (42).
[0015]
(32) For a bag in which no defect is detected in the detection destination process by the detection means in the next process, a predetermined packaging process is performed in the next process, and at the same time, defect detection in the process is performed. The control flow after detection (43 to 52) is the same as described above, and this is repeated in the subsequent steps.
[0016]
FIG. 3 is a configuration diagram of an abnormality detection apparatus that performs the detection and control. This abnormality detection device includes a detection means 61 for detecting a defect corresponding to each packaging process, a defect count condition setting means 63, a defect count value setting means 64, a defect continuous count value setting means 65, an abnormality content display operation means 67, The storage device 68 includes a display device 70 and a control device 62. Instead of or in addition to the defect count value setting means 64, a defect rate setting means 66 may be provided.
It is desirable that the defect count condition setting unit 63, the defect count value setting unit 64, the defect continuous count value setting unit 65, and the defect rate setting unit 66 can be set for each type of defect. However, a common setting may be made for some or all of the defects.
[0017]
In the above abnormality detection device, the storage device 68 stores and accumulates data related to the content of the abnormality determination, such as the date / time when the abnormality is determined, the type of defect, the count condition, the count value, the continuous count value, and the defect rate. This can be appropriately displayed on the display device 70 by operating the abnormality content display operation means 67. For example, regarding a defect in a certain process, when it is decided to stop the packaging machine when the set continuous count number is reached and replace a specified part, the productivity and production will be the highest when the continuous count value is set to any number. It is possible to know whether the cost balance was excellent by displaying the accumulated past data and comparing it.
[0018]
【The invention's effect】
According to the present invention, the occurrence of abnormality is automatically determined based on a preset number of defects, continuous count or defect rate, and displayed together with the type of defect. There are no indications of abnormalities or / and no stopping of packaging machines for accidental defects that are not based, and when abnormalities occur, it is possible not only to immediately know which part is abnormal, In the case of an abnormality that involves parts replacement, the replacement time can be set numerically in advance, so that it is possible to set the balance between productivity and production cost without unevenness in replacement time. In particular, if the count condition, the count number, the continuous count number, the defect rate, etc. can be set for each type of defect, it is possible to set the balance between productivity and production cost for each part.
[Brief description of the drawings]
FIG. 1 is a diagram showing a detection flow in an abnormality detection apparatus according to the present invention.
FIG. 2 is a diagram similarly showing the flow of control.
FIG. 3 is a diagram similarly showing the configuration.

Claims (9)

The detection means for detecting defects in the packaging process, and the defects detected by the detection means are counted under a preset count condition, and determined as abnormal when the count number of defects of the same type reaches a preset value. A bag packing and packaging machine comprising: a control device that performs a display; a display device that displays a type of defect determined to be abnormal; and a defect count value setting unit that sets a count value serving as a determination criterion for abnormality . Anomaly detection device. The abnormality detection device for a bagging and packaging machine according to claim 1, wherein the defect count value setting means is configured to set the count value for each type of defect. A detecting means for detecting defects in the packaging process, a control device for determining an abnormality when a continuous count number of defects of the same type detected by the detecting means reaches a preset value, and a defect determined to be abnormal An abnormality detection device for a bagging and packaging machine, comprising: a display device for displaying a type; and a defective continuous count value setting means for setting a continuous count value serving as a criterion for abnormality determination . 4. The abnormality detecting device for a bagging and packaging machine according to claim 3, wherein the continuous continuous count value setting means is configured to set the continuous count value for each type of failure. The detecting means for detecting defects in the packaging process, and the defects detected by the detecting means are counted under preset count conditions, and the defect rate is continuously calculated for each type of defect, and the defect rate is preset. A control device that determines that an abnormality has occurred when the value is reached, a display device that displays the type of failure determined to be abnormal, and a failure rate setting means that sets a failure rate value that serves as a criterion for abnormality. An abnormality detection device for a bagging and packaging machine. 6. The abnormality detection device for a bagging and packaging machine according to claim 5, wherein the defect rate setting means can set the value of the defect rate for each type of defect. The said control apparatus stops a bag-packing packaging machine simultaneously with displaying simultaneously with the display of the kind of defect determined to be abnormal on a display apparatus, It was described in any one of Claims 1-6 characterized by the above-mentioned. Abnormality detection device for bagging and packaging machines. The abnormality detection device for a bagging and packaging machine according to any one of claims 1, 2, 5 to 7 , wherein the count condition can be set for each type of defect.   Storage means for storing data related to the contents of abnormality determination, such as date and time when it is determined as abnormal, type of defect, count condition, count number, continuous count number, defect rate, etc., and output the stored contents to the display device An abnormality detecting device for a bagging and packaging machine according to any one of claims 1 to 8, further comprising an operating means for causing the bagging and packaging machine to operate.

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