JPS5965744A - Quality checking method for container filled with high temperature liquid - Google Patents

Abstract

PURPOSE:To detect a defect sealing state of a container filled with a high temperature liquid, by detecting the deformation of said container due to a reduction of the pressure inside the container which is generated by cooling. CONSTITUTION:If a sealed part 1 is adhered completely, a barrel part is depressed as shown dotted lines owing to cooling of the air within a head space. In such a case, a detection terminal 7 of a detector 5 has no contact with the part 6 of a container C. Therefore the detector 5 has no actuation, and the container C is conveyed as it is to the next process. If the adhesion is incomplete at the part 1 of the container C, the open air (atmospheric pressure) goes into the container C through the defective area of adhesion. Thus the part 6 swells out, and therefore the terminal 7 touches the part 6. Then a coupling rod 8 is pushed toward an arrow mark, and an L-shaped lever 9 connected to the rod 8 at a point 10 is turned toward an arrow mark. Thus the contact is detached from a switch S, and the circuits of a lamp, buzzer, etc. conduct to inform the presence of a defective product.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for inspecting the trade of containers, and particularly relates to a method for inspecting the trade of containers, especially those that are filled with a large amount of gies, alcoholic beverages, etc. and sealed. The first feature is that the deformation of the container due to the low internal pressure of the container is used to detect the presence or absence of a sealing failure.

Hereinafter, a detailed explanation will be given based on a large example shown in the drawings.

Conventionally, in this case, after filling and sealing the container, there is a process in which the entire valley "a" is rapidly cooled using a blower or the like. The air in the space between the liquid content level and the top of the container (height space) is also cooled.As a result, the air pressure in this head space becomes lower than the air pressure outside the container (atmospheric pressure). If the container wall is pushed inward and dented due to the pressure difference (the Ugo family lives), however, in this case, for example, if there is a defective adhesive spot in the M of the container where it is glued. , outside air (atmospheric pressure) enters the container through the defective adhesion, causing the container to swell even after it has cooled. Conventionally, this bulge in the container has been removed by a device near the container filling/sealing machine. If a worker or a child discovers the container, remove it on the spot (or leave the container for at least one day after filling and have a worker inspect all containers to check for poor adhesion (poor sealing). The method of discovery was adopted.

The invention is a method that improves such conventional methods and mechanically checks the bulge of the container to check for sealing defects without requiring human labor.More details, 1.111 Explain.

First, a container according to the present invention [(J) is a liquid container having a gable top that is assembled from a laminated material such as pre-assembled, aluminum, thermoplastic resin, etc., as shown in FIG. 1. However, the present invention is not limited to this, and a lid may be attached to the cup-shaped container body and the size may be 21 inches or 14 inches.

After filling the container (C1) with the contents such as Takako (approximately 90 degrees Celsius) sake, G-su, etc. as shown in Fig. 1, the opening is sealed by means such as heat sealing. , as shown in Fig. 2 of the filling and sealing machine.
+21'131 f3i' is supported and transported (B
) As soon as you reach the point, guide (2) or (2)
'Detector 1 installed above and on the conveyor (4) frame,
5), the bulge of the body (6) of the container (C1) after cooling is detected.

Here, a further explanation of the detector (5) will be given based on FIGS. Ba,
Due to the cooling of the air in the head space, the trunk (6)
It is recessed as shown by the dotted line in the figure. Therefore, in this case, the force on the detection opening terminal (detector 15) does not come into contact with the body (6) of the container (C1) and the detector (5) does not operate, so the container (C1) is left as is and is not used in the next process. In addition, if the sealing part (1) of the container (C1) approaching the BJ point is incompletely bonded, outside air (atmospheric pressure) may enter the container through the defective bonding point and cause damage to the container body. (6) expands.

Therefore, when the force contacts the barrel (6), the connecting rod (8) is pushed in the direction of the arrow, and the approximately L-shaped lever connected with said connecting rod (8) at the point (10) (9)
rotates in the direction of the arrow, the contact with the switch 181 is separated, and a circuit such as a lamp, buzzer, etc. (not shown) is connected to notify the worker of the presence of a defective product. After that, all you have to do is remove the defective container.

Since the present invention has the above-described structure, it is possible to use a conventional container filling and sealing machine with a simple device added, so there is almost no equipment cost, and the machine and the filling and sealing machine can be used easily. Since the inspection can be carried out immediately on the production line, there may be delays in product shipment.

Furthermore, by appropriately selecting the switch of the detector and selecting the installation position (distance from the conveyor), it is possible to obtain a vague transverse strain with an accuracy of approximately 21+Imσ], which is felt as the torso swells.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a container according to the present invention, FIG. 2 is a plan view showing the main parts of a container filling and sealing machine according to the present invention, and FIGS. 6 and 4 respectively show the state of implementation of the present invention. '1-Drink Ming diagram. (11...Sealing part +21 +2dot3] +3)
'...Guide (4)...Conveyor (5)...
・Detector (6)...Body (7)...Detection terminal (8)...Connecting rod (9)...Reno < -(
A)...Cooling stand V (Bl...+9 mitenro Viμ
(C1-° Container patent applicant Toppan Printing Co., Ltd. Representative Aio Suzuki

Claims (1)

[Claims] Mouth] Consists of a tung tree that prays for sex;
A container having a body with an opening at the other end is filled with 7% liquid from the opening, and the opening is closed and sealed;
Due to the decrease in the internal pressure of the container due to the subsequent cooling process, 7. )
This is a method of inspecting for defects in the container by detecting the presence or absence of dents in the container, and detects contact between the detection terminal and the body of the container, which is installed on the side of the feeding path of the container after it has been sealed and cooled. High r = c
A method for inspecting the quality of T-type containers.