JP2583590Y2 - Detecting device for defective bag of packaging machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting whether or not a filler is attached to a bag mouth before sealing with an automatic packaging machine to prevent defective bags.

[0002]

2. Description of the Related Art A bag containing a filling material therein is heat-sealed by means of a heat sealing device by temporarily pressing the outer side of both sides of the opening. However, if the filler adheres to the opening at the time of charging, the filler in the bag overflows during feeding, and adheres to the opening, or if foreign matter or the like adheres to the opening due to other causes, it remains unchanged. Heat sealing causes dirt and burning on the sealing portion, lowering the commercial value and also causing poor sealing. In addition, irregularities due to scorching of foreign matter are formed on the hot plate pressing surface of the sealing device, which causes uneven pressing at the opening of the subsequent bag, which causes poor sealing.

[0003] Conventionally, if foreign matter such as a filling substance is found to adhere to the opening of the bag visually or by an automatic detection method,
The bag is rotated without performing the heat sealing process and is discharged in a discharging step, or in order to remove the cause of the defect, the entire apparatus is temporarily stopped to perform cleaning or other treatment.

[0004]

As described above, if foreign matter such as filler is detected at the opening of the bag and discharged in the discharge step without heat sealing, the stored filler is discharged on the discharge conveyor. However, there is a disadvantage that the apparatus is discharged and scattered, thereby contaminating peripheral devices and the surrounding environment, and a method of once stopping the entire apparatus to remove the cause of the defect has a disadvantage that the production efficiency is significantly reduced.

[0005]

Means for Solving the Problems The present invention is intended to solve the above-mentioned problems, and the feature of the present invention is that a bag held by a bag holding device is intermittently rotated around a table so that a filling material is discharged. In a packaging machine adapted to be charged and packed, an attached substance detector for detecting whether or not the charged substance or foreign matter is attached to the bag mouth, and a detector based on a detection signal of the detector. And a grip release device for releasing the grip of the bag by the bag grip device is provided for the step before the mouth seal.

[0006]

According to the present invention, it is detected whether or not a filler or a foreign matter is attached to the bag mouth by the attached matter detection device. If it is detected that the filler or the foreign matter is attached, the grip is released based on the detection signal. When the device is operated, the grip of the bag is released, and the bag is discharged through a separate discharging means.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is an overall view of a packaging machine to which the defective bag detection device of the present invention is applied. As shown in the figure, the bag (1) supplied by a bag supply device (not shown) in the process (1) is stored in a table (T).
Intermittently rotates in conjunction with the process, the manufacturing date is stamped in step (2), the bag mouth is opened in step (3), and the bag is opened separately in steps (4) and (5). The supplied filling material or the filling material and the filling liquid are charged, and the bag mouth is firstly and secondly sealed in steps (6) and (7), and then discharged in step (8). The paper is discharged to the outside via the conveyor (5).

[0008] Then, steps (4),
(5) During the time, an adhering substance detector (3) for detecting the presence or absence of filler (eg, raw udon, raw buckwheat, curry, confectionery) adhering to the opening of the bag (1), or other foreign matter, etc. A chuck (2a) of a bag holding device (2) which is installed and holds a bag (1) based on a detection signal of the detector (3) in a step (5).
Each of the grip release devices (4) for releasing the grip is provided. Further, as another embodiment, by stopping the operation of the sealing device based on the detection signal of the attached matter detector (3), it is possible to install a grip release device in the sealing step.

The attached matter detector (3) is shown in FIGS.
As shown in (1), for example, a non-contact sensor such as a photoelectric tube or the like is employed, and is installed at a predetermined distance from the opening of the bag (1) to be detected. Foreign matter (6) is detected. 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), and operates in response to a detection signal of the attached matter detector (3) to operate the bag gripping device (4). Release the grip of the bag (1) by the chuck (2a) in 2) and discharge the bag (1).

Thus, for the bag (1) intermittently rotated together with the table (T), the presence or absence of the attached matter at the opening is constantly detected by the attached 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 in accordance with a normal packaging process, and then is discharged (8).
And is discharged outside through a discharge conveyor (5).

On the other hand, the filler or other foreign matter that has overflowed from the bag mouth during the charging or the feeding is attached to the opening of the bag (1), and the attached matter detector (3) detects When "yes" 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 gripping before being heat-sealed, and is separately collected and processed by the discharging means.

[0012]

As described above, according to the defective bag detecting apparatus of the present invention, the foreign matter such as the filler adhering to the bag mouth is detected by the adhering substance detector, and the grip release device is detected based on the detection signal. When activated, the bag is released and the bag is collected and processed via a separate discharging means. Therefore, the defective bag is not detected in advance and is not heat-sealed. The trouble that the hot plate becomes dirty and the bag becomes poorly sealed is eliminated.

Further, since the defective bags which are not heat-sealed are separately collected, the discharge conveyor is not contaminated with the filling material. Furthermore, since there is no need to temporarily stop the apparatus for removing the cause of the defect, there is an excellent effect that the productivity does not decrease.

[Brief description of the 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 a plan view of the above.

[Explanation of symbols]

 Reference Signs List 1 bag 2 bag holding device 2a chuck 3 attached matter detector 4 holding release device 5 discharge conveyor

Claims (1)

(57) [Scope of request for utility model registration] In a packaging machine which inserts and packs a filling material while intermittently rotating a bag held by a bag holding device around a table, the charged filling material or foreign matter is filled in a bag opening. Adhered matter detector that detects whether or not it is attached to the surface (3)
Defective bag detection of a packaging machine provided in a step before a mouth release seal (4) for releasing grip of a bag by a bag gripping device based on a detection signal of the detector. apparatus.