JPH0635106U - Bad bag detection device for packaging machine - Google Patents

Abstract

(57) [Summary] [Purpose] Detect foreign substances such as fillers adhering to the bag mouth before sealing the mouth, collect the bag before sealing and eliminate defective bags to prevent device contamination. The purpose is to prevent. [Structure] In a packaging machine configured to load and pack a bag gripped by a bag gripping device while intermittently rotating around a table, the loaded packing material or foreign matter adheres to a bag mouth. To prepare for the process before sealing the adhering matter detector that detects whether or not the bag is held, and the grip release device that releases the bag grip by the bag grip device based on the detection signal of the detector. Characterize.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device that detects whether or not a filling material is attached to a bag mouth before sealing a mouthpiece with an automatic packaging machine and prevents a defective bag from occurring.

[0002]

[Prior art]

 The bag in which the filling is stored is heat-sealed by temporarily sandwiching it from outside both sides of the opening with a heat-sealing device. However, if the filling material adheres to the opening at the time of loading, the filling material in the bag overflows at the time of feeding and adheres to the opening, or foreign matter adheres to the opening due to other causes, it remains as it is. When heat-sealed, the seal part becomes dirty and charred, which lowers the product value and also results in poor sealing. In addition, unevenness is created on the hot plate pressure-bonding surface of the sealing device due to burning of foreign matter, which causes pressure-bonding unevenness in the opening of the subsequent bag, which causes a seal failure.

Therefore, conventionally, when foreign matter such as a filler is found in the opening of the bag by visual inspection or an automatic detection method, the bag is rotated without performing the heat-sealing process and discharged in the discharging process, or In order to eliminate the cause of defects, the entire equipment was once stopped and cleaning and other measures were taken.

[0004]

[Problems to be solved by the device]

 As described above, if foreign substances such as fillers are detected in the opening of the bag and discharged in the discharge process without heat sealing, the stored fillers are discharged / scattered on the discharge conveyor and peripheral equipment. However, there is a problem that the surrounding environment is contaminated, and the method of once stopping the entire device to eliminate the cause of the defect has a drawback that the production efficiency is remarkably reduced.

[0005]

[Means for Solving the Problems]

 The present invention is intended to solve the above-mentioned problems, and is characterized in that a bag held by a bag holding device is intermittently rotated around a table and a filling material is put therein for packaging. In the packaging machine, an adhering matter detector that detects whether or not the introduced filling material or foreign matter is adhering to the bag mouth, and the bag grasping device grasps the bag based on the detection signal of the detector. This is in preparation for the process before the mouth-sealing of the grip release device to be released.

[0006]

[Action]

 The adhering matter detection device detects whether or not the filling or the foreign matter is attached to the bag mouth, and if it is detected that the filling or the foreign matter is adhering to the bag, the grasp release device is detected based on the detection signal. Is operated, the grip of the bag is released, and the bag is separately discharged through the discharging means.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall view of a packaging machine to which the defective bag detecting device of the present invention is applied. As shown in the figure, the bag (1) supplied by the bag supply device (not shown) in the step (1) is intermittently rotated in association with the table (T), and the manufacturing year in the step (2). The date is stamped, the bag mouth is opened in the process (3), and the separately charged filling or filling and filling liquid are added in the steps (4) and (5), After the bag mouth is primary-sealed and secondary-sealed in (6) and (7), it is discharged to the outside through the discharge conveyor (5) in step (8). There is.

Then, at the opening of the bag (1) between the steps (4) and (5) of this packaging system, or between the steps (4) and (5) and the following steps (6) and (7). Based on the adhered filler (eg raw udon, raw buckwheat, curry, confectionery) or other foreign matter, the adherent detector (3) and the detection signal of the detector (3) A grip release device (4) for releasing the grip of the chuck (2a) of the bag gripping device (2) for gripping the bag (1) is installed.

As shown in FIGS. 2 and 3, a non-contact sensor such as a photoelectric tube is adopted as the adhering matter detector (3), which is installed at a predetermined distance from the opening of the bag (1) to be detected. It detects the foreign matter (6) such as the filler adhered to the opening at the time of charging or during feeding. Further, the grip release device (4) employs, for example, a cylinder drive mechanism or the like which is usually installed in the discharging step (8), operates in response to a detection signal from the adhering matter detector (3), and grips the bag. The grip of the bag (1) by the chuck (2a) of the device (2) is released, and the bag (1) is discharged.

Thus, for the bag (1) which is intermittently rotated together with the table (T), the presence or absence of the adhered matter at the opening is constantly detected by the adhered matter detector (3). Is detected as “absent”, no operation signal is sent to the grip release device (4), and the bag (1) is heat-sealed at the bag mouth according to the normal packaging process, and then the discharging process (8) is performed. It is discharged to the outside via the discharge conveyor (5).

On the other hand, the filling material or other foreign matter overflowing from the bag mouth at the time of charging or during the feeding is adhered to the opening of the bag (1) and the adhered matter detector (3) detects the adhered matter. When the presence signal is detected, the detection signal is immediately sent to the grip release device (4) and the device (4) is operated to release the grip of the bag (1) by the chuck (23). Thus, the bag (1) is released from the grip before being heat-sealed, and is separately collected and processed by the discharging means.

[0012]

[Effect of device]

 As described above, according to the defective bag detecting apparatus of the present invention, the foreign matter such as the filling material adhering to the bag mouth is detected by the adhering matter detector, and the grip releasing device is operated based on the detection signal to detect the bag Since the grip is released and the waste bag is separately collected and processed through the discharging means, the defective bag is not detected in advance and is not heat-sealed. There is no trouble such as the bag becoming poorly sealed.

Further, since the defective bag which is not heat-sealed is separately collected, the discharge conveyor is not contaminated with the filling material. Further, since it is not necessary to suspend the device for removing the cause of the defect, there is an excellent effect that productivity is not reduced.

[Brief description of drawings]

FIG. 1 is an overall view of a packaging machine to which a defective bag detection device of the present invention is applied.

FIG. 2 is an operation explanatory view of the defective bag detecting device of the present invention.

FIG. 3 is the above plan view.

[Explanation of symbols]

 1 bag 2 bag gripping device 2a chuck 3 adhering matter detector 4 gripping release device 5 discharge conveyor

Claims (1)

[Scope of utility model registration request] 1. In a packaging machine adapted to load and pack a bag gripped by a bag gripping device while intermittently rotating around a table. Adhesion detector (3) for detecting whether or not it is attached to
And a defective bag detection device for a packaging machine, which is equipped with a grip release device (4) for releasing the grip of the bag by the bag grip device based on a detection signal of the detector in a process before sealing the mouth. apparatus.