JPH0378632A - Detecting method of finish of powdery-granular body in flexible container - Google Patents

Abstract

PURPOSE:To enable information of finish in a flexible container by a method wherein the flexible container filled up with a powdery-granular body inside is set on a hopper and, after discharge is made from a discharge port in the lower part, it is pulled upward by a hook and detected through the intermediary of a counterweight provided at the end. CONSTITUTION:A flexible container C is set on a hopper 1 and hooks 5 are made to engage with the upper part of the flexible container C. A cable wire 6 is extended upward from the hooks 5 through the intermediary of a suspension ring 5' and a counterweight CW is provided at the terminal of the wire. The counterweight CW is made to be somewhat heavier than the tare weight of the flexible container C, and when resin (a) in the flexible container C drops into a truck 2 and the quantity thereof lessens, the flexible container C is pulled upward, while the counterweight CW lowers. When the resin in the flexible container C finishes, the counterweight C lowers and is detected by a switch SW and an information is made by a sounding buzzer or a flickering lamp.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for detecting that powder/granules contained in a flexible container have been discharged from a discharge port and have reached the amount of holly.

[Conventional technology and its issues]

For containers such as polyethylene and polyvinyl chloride, bags made of several layers of kraft paper are used to handle small quantities, and aluminum containers are used to handle large quantities. Even if the container becomes larger, the size cannot be reduced, so the cost of returning the container cannot be saved.

As a countermeasure against this problem, in recent years, large bag-shaped flexible containers (referred to as flexible containers) made of extremely strong fibers such as aramid fibers have come into widespread use.

This flexible container (hereinafter referred to as a flexible container) is very convenient because its bulk is small when returning it, but it is difficult to see inside the flexible container, and once the resin inside is removed and reduced, It bends in such a way that resin powder particles remain in the bent place (empty space), resulting in a situation where the resin powder particles cannot be completely discharged. If it's a small bag, you can hold it and hold it, but if it's big like a flexible container, you can't do it as you want.

Therefore, the inventors placed the flexible container on the hopper, opened the lower discharge port, and placed the flexible container on the top of the hopper.
Engage the hook with the extended cable wire, pull the cable wire upwards, reverse its direction through the sheep, and turn it downward to attach the weight of the flexible container (not including the weight of contents) to its end. We devised a solution by suspending a slightly heavier counterweight so that the flexible container would always be lifted upward even when the resin was discharged (see examples).

In this way, an upward biasing force is constantly applied to the upper part of the flexible container, and as the resin particles are discharged, the upper part is pulled up. Therefore, the flexible container does not bend and the entire amount of resin is smoothly discharged.

An object of the present invention is to detect the amount of cotton in powder/granules in a flexible container such as a flexible container by utilizing the above solution.

[Means to solve the problem]

In order to solve the above problem, in the present invention, in the above solution, as the powder/granules in the flexible container are discharged,
Focusing on the fact that the wire moves due to the load of the counterweight, the movement of the wire or the movement of the counterweight is detected, and the amount of cotton is detected from the detected value.

The above-mentioned detected value is appropriately determined based on the amount of movement of the wire, etc. when the amount of cotton is measured in actual operations, experiments, etc. For example, when the container is empty, the wire and counterweight usually move a lot, so the time when the wire and counterweight move a lot is considered to be the cotton weight time. Alternatively, when the cotton is weighed, the counterweight is lowered to a substantially constant position, so that position is taken as the time when the cotton is weighed.

As the detection means, various known means such as a proximity switch can be employed, and it is preferable that the detection means is mounted so that it can be moved and fixed in the length direction of the wire depending on the capacity, shape, etc. of the flexible container.

[Effect]

With this configuration, the amount of cotton in the flexible container can be detected, and based on the detection, a buzzer sounds, a lamp flashes, etc., to notify the user.

〔Example〕

This embodiment is adopted for the outer sheathing resin supply part to the outer sheathing extrusion molding machine in the manufacturing process of electric wires and cables.As shown in the figure, a hopper 1 is provided on the frame F, and this hopper 1 A resin truck 2 is located below.

A suction pipe 3 is inserted into this resin cart 2, and this suction pipe 3
Then, the resin a in the truck 2 is conveyed to an extrusion molding machine (not shown) via a flexible tube 4.

A flexible container C is placed on the hopper 1, and a hook 5 is secured to the upper part of the flexible container C.
A cable wire 6 extends upward through a hanging ring 5', the wire 6 is directed downward by a sheep 7, and a counterweight CW is provided at the end thereof. This counterweight CW is slightly heavier than the empty weight of the flexible computer C, and its load causes the upper part of the flexible computer C to be pulled upward as shown by the chain line in the figure.

Therefore, when the resin a is fed into the extrusion molding machine and the resin a in the flexible container C falls into the trolley 2 and its amount decreases, the upper part of the flexible container C gradually drops as shown by the chain line in the figure. The counterweight CW is also lowered by being pulled upward. When the inside of the flexible container C is filled with cotton, the counterweight cw is greatly lowered, passes in front of the proximity switch SWO, and reaches the top of the frame (not shown). At this time, the switch SW detects the counterweight CW, and the detection signal is used to notify the user by ringing a buzzer or flashing a lamp.

With this notification, the worker knows the cotton content of flexible container C.
Replace it with a new, full FIBC C.

〔Effect of the invention〕

Since the present invention is configured as described above, the amount of cotton in the flexible container can be easily detected, and the amount of cotton can be notified by the detection. Therefore, it is possible to eliminate inconveniences such as running out of supply of powder and granules, and increase production efficiency.

[Brief explanation of drawings]

The drawing is a schematic diagram of an embodiment of the method for detecting the amount of powder/granular cotton in a flexible container according to the present invention. 1... Hopper 2... Resin trolley, 3... Suction pipe, 4... Flexible tube, 5...
Hook, 6...Cable wire, 7.
...Sheep, a...Resin, C.
・・・・・・Flexible container, CW・
... Counterweight, SW ... Switch, F ... Frame.

Claims (1)

[Claims] (1) Place a flexible container full of powder/granules on the hopper, open the discharge port at the bottom, hook a hook with a cable wire extending to the top of the flexible container, and pull the cable wire upward. The end of powder/granules in a flexible container is characterized in that the direction is reversed downward through a sheep, a counterweight is hung at the end of the end, and movement of the cable wire or counterweight is detected. Quantity detection method.