JPH0227906Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field This invention relates to a device for distributing powder to a flat article with a uniform thickness or uniformity.

(2) Prior art For example, in the process of scattering glass powder in the pre-process of manufacturing a reflector, a synthetic resin plate is run on a conveyance path such as a turntable or a chain conveyor, and during this run, a glass powder is spread. The glass powder stored in the hopper of the quantitative feeder was supplied by a screw to the high end of the chute, and then dropped from the low end of the chute to be scattered onto the plate.

(3) Problems to be solved by the invention The glass powder supplied by the screw is
The glass powder falls and flows down the center between both side edges of the chute, and it is not possible to drop the glass powder uniformly from the entire width of the lower end of the chute, so the density of the powder spread between the center and both sides of the plate is Differences occur.

For this reason, there was a problem that variations occurred in the powder dispersion, making it impossible to obtain a uniform reflective surface.

(4) Means for solving the problem In this invention, an oscillating chute that reciprocates between both side edges of the stationary chute is provided between the quantitative feeder and the stationary chute.

(5) Effect This device supplies powder from a metering feeder to an oscillating chute, drops the powder uniformly from the oscillating chute over the entire width of the stationary chute, and then spreads the powder over the entire surface of the traveling plate. This is to ensure uniform spraying.

(6) Example In the figure, reference numeral 1 indicates a conveyance path on which a flat article A travels.

Although the conveyance path 1 described above uses a chain or a net conveyor in the illustrated case, it may be made to run using something other than the above.

B is a powder metering device provided directly above the conveyance path 1.

The above quantitative feeder B includes a hopper 2, a spout 3 provided on one end wall of the hopper 2 so as to communicate with the bottom inside the hopper 2, and a spout 3 whose end is fitted into the spout 3. It consists of a screw 4 with a drive function built into the bottom.

C is a stationary chute with its lower end located directly above the article A passing through.

As shown in the figure, the high end of the stationary chute C is rotatably supported via a horizontal pin 5, and the low end of the stationary chute C is connected to and supported by an elevation adjustment bolt 6, so that the stationary chute C can be moved freely. The falling speed of powder can be freely adjusted by changing the inclination angle.

D is an oscillating chute that uniformly supplies the powder supplied from the spout 3 to the entire width of the high end of the stationary chute C.

The above swing chute D is the mouthpiece 3 in the case shown.
An arm 8 is provided, which supports the high end so as to be rotatable, and moves forward and backward by a crank mechanism 7. support freely,
Swing shot D as the arm 8 moves forward and backward.
Although the lower end of the stationary chute C is moved back and forth alternately from one side to the other side and from the other side to one side, other methods may be used.

Note that E in the figure is a dispersion device such as a wire mesh that is disposed between the stationary chute C and the article A to disperse the powder.

The dispersing device according to this invention has the above-mentioned structure, and its operation will be explained next.The powder a stored in the hopper 2 is fed into the spout 3 by the screw 4, and is quantified from the spout 3. Supplied.

The powder supplied from the spout 3 passes through the oscillating chute D and falls to the high end of the stationary chute C.

At this time, the oscillating chute D distributes the powder a uniformly over the entire width between both side edges of the stationary chute C, and the powder a is evenly spread from the stationary chute C onto the upper surface of the article A that is traveling.

In addition, as shown in the figure, by collecting the powder a that fell during scattering on the article A into the receiving hopper 9, and sending the powder from the receiving hopper 9 to the screw conveyor 10 to the hopper 2,
The fallen powder can be collected and used.

(7) Effects As described above, according to the dispersion device according to this invention, the powder supplied from the quantitative feeder is made to fall uniformly over the entire width between both side edges of the stationary chute through the oscillating chute. Therefore, the powder can be uniformly spread over the entire surface of the article.

[Brief explanation of the drawing]

FIG. 1 is a side view of the dispersing device according to the invention, and FIG. 2 is an enlarged plan view showing the main parts of the same. B...Quantitative feeder, C...Stationary chute, D...
... Swing chute, E... Dispersion device, 1... Conveyance path, 7... Crank mechanism, 8... Arm.

Claims (1)

[Scope of utility model registration request] In this scattering device, a fixed quantity feeder B for powder is provided above the conveyance path 1 of the article A, and the powder supplied from the fixed quantity feeder B is sprinkled onto the upper surface of the traveling article A from a stationary chute C. A dispersion device characterized in that a dispersion swinging chute D that reciprocates between both side edges of the stationary chute C is provided between the quantitative feeder B and the stationary chute C.