JPH0752103Y2 - Powder quantitative supply device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a device used for quantitatively supplying powder, a device for supplying a spacer in an LCD,
The present invention relates to a powder quantitative supply device used for a constant amount chemical supply device and the like.

[0002]

2. Description of the Related Art A conventional method for quantitatively supplying powder a is shown in FIG.
As shown in FIG. 6, firstly, one using a spiral b rotating in the arrow direction (see FIG. 5), secondly using a vibrating feeder c (see FIG. 6), and thirdly a stocker d.
Slide f with powder e stored in
There are various methods such as a cut-off method (see FIG. 4).

From the viewpoint of preventing the quantitative supply error of the powder a, it is better to use the third volume control, and FIG. 4 shows its general structure.

[0004]

However, in the above-mentioned conventional technique, due to the nature of the powder, it becomes hollow (bridge) in an extreme case, and the inside of the powder does not have a constant density.
Therefore, for continuous quantitative supply of powder, there is no choice but to cut out a certain amount while measuring with a balance or the like in the conventional method described above, but a measuring unit such as a balance is separately added to the conventional device. In this case, there is a problem that the device becomes large and expensive.

Further, there is a problem that hollows (bridges) are likely to be formed inside the powder, and further, the conventional method cannot structurally continuously supply the powder for a long time.

Therefore, the present invention was devised in view of the problems of the above-mentioned conventional techniques, and an object thereof is to provide a powder quantitative supply device capable of quantitatively supplying powder.

[0007]

In order to achieve the above object, in the powder quantitative supply device of the present invention, in a device for taking out a predetermined amount of powder stored in a stocker,

A horizontally movable slide having a fixed amount hole corresponding to the amount of powder in a guide hole provided substantially in the middle of the stocker, and a slide having a hole corresponding to the fixed amount hole and movable along the slide. Shutters are arranged on both sides of the slide, and a suction device for sucking the inside of the stocker is connected below the stocker.

[0009]

As shown in FIGS. 1 to 3, in the first step, the holes of the shutter and the fixed holes of the slide are moved so as to coincide with each other, and the powder is stored in the upper part of the stocker chamber. At this time, suction is performed from below the filter so that the powder flows from the upper part of the stocker to the lower part without interruption. Then, the powder is stored in the fixed amount hole of the slide (see FIG. 1).

In the second stage, only the shutter is moved laterally, and the hole of the shutter is moved to a position where the powder is dropped. At this time, the powder is separated into the upper part and the fixed amount hole of the slide in the stocker (see FIG. 2).

In the third step, only the slide is moved in the lateral direction, the fixed amount hole of the slide is aligned with the hole of the shutter, and the powder is dropped downward to obtain a fixed amount of powder (see FIG. 3).

[0012]

EXAMPLES Examples will be described with reference to the drawings. 1 to 3, a guide hole 22 is provided at a substantially intermediate position of the stocker 2 provided with a chamber 21 for storing the powder 1.
A slide 4 that is movable in the horizontal direction is arranged in the guide hole 22.

On the slide 4, a fixed volume hole 41 having a predetermined volume is provided.
Is provided, and the amount of the powder 1 is determined by adjusting the volume of the metering hole 41.

The chamber 21 has a wide upper part and a slightly narrower position at the guide hole 22 so that the powder 1 can easily fall.

Further, in the guide hole 22, a shutter 3 having a hole 31 having substantially the same diameter as that of the fixed quantity hole 41 is arranged so as to sandwich the slide 4 from the upper and lower sides so as to be horizontally movable via the rubber bush 5. ing.

Further, a filter 6 is arranged in the chamber 21 of the stocker 2 below the guide hole 22, and a suction device (not shown) is used so that the powder 1 may flow from the upper part to the lower part of the chamber 21 without interruption. It is configured to perform suction.

[0017]

Since the present invention is constructed as described above, it has the following effects. It becomes possible to supply a fixed amount of spacers, which is problematic because the dry method is used for the spraying of the spacers in the LCD instead of the wet method using CFCs.

Since this device has a simple fixed-quantity supply structure that does not require a measuring section, it can be made compact and can be manufactured at low cost.

Furthermore, a fixed amount of powder can be continuously supplied for a long time without performing measurement.

Further, by sucking from the lower part of the stocker, the powder can be uniformly filled in the fixed amount holes of the slide. Further, the suction can break the hollow state of the powder generated in the storage chamber, and the powder in the stocker can be used until the end.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a first stage of the present invention.

FIG. 2 is a partial cross-sectional view of the second stage of the present invention.

FIG. 3 is a partial cross-sectional view of a third stage of the present invention.

FIG. 4 is a cross-sectional view of a conventional method of scraping.

FIG. 5 is an explanatory diagram of a conventional spiral method.

FIG. 6 is a perspective view of a conventional vibration feeder system.

[Explanation of sign]

 1 powder 2 stocker 21 chamber 3 shutter 31 hole 4 slide 41 metering hole 5 rubber bush 6 filter

Claims (1)

[Scope of utility model registration request] 1. A device which takes out a predetermined amount of powder stored in a stocker by a predetermined amount, and a horizontally movable slide having a fixed hole corresponding to the amount of powder in a guide hole provided substantially in the middle of the stocker. And a shutter having a hole corresponding to the fixed amount hole and movable along a slide is arranged on both sides of the slide, and a suction device for sucking the inside of the stocker is connected below the stocker. A fixed amount powder supply device.