JPH0324328Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a tapered hood that is used by being connected to a dust collector.

[Background of the idea]

With a conventional tapered hood, as shown in Figure 3, if the taper angle of the flare part is large, the suction force will be extremely low at both ends of the tapered hood, and the chips discharged from the woodworking machine will be sucked in. The disadvantage was that the chips did not reach the mouth and accumulated at both ends, causing chips to become clogged.

[Purpose of invention]

The purpose of the present invention is to eliminate the drawbacks of the prior art described above, improve dust collection efficiency, and prevent chip clogging.

[Summary of the idea]

This invention focuses on the fact that the pressure inside the tapered hood is negative compared to the atmospheric pressure, and has been devised to prevent chips from clogging by providing an auxiliary hole in the flare part of the tapered hood. be.

[Embodiment of the invention] An embodiment of the invention will be described with reference to FIGS. 1 and 2. The tapered hood 1 has a flared portion 2 formed in a symmetrical shape from the opening 5 to the suction port 4, and auxiliary holes 3 are provided at appropriate positions in the flared portion 2 at symmetrical positions. .

The tapered hood 1 is attached to the chip discharge port 6 of the woodworking machine using mounting screws 9, and one side of the duct hose 10 is connected to the suction port 4 of the tapered hood 1.
It is used by connecting the other end to a dust collector.

In the above configuration, a dust collector is attached to the suction port 4 of the tapered hood 1 of the present invention via a duct hose 10, and when this dust collector is started, the tapered hood The air inside the hood 1 is sucked into a state where the pressure is lower than atmospheric pressure, and the suction force is strongest in the center of the hood 1 near the duct hose 10, and gradually weakens in the flared portion 2 away from the center. For this reason, by providing auxiliary holes 3 at appropriate locations in the flare part 2,
Due to the pressure difference between the atmospheric pressure outside the tapered hood 1 and the negative pressure inside the tapered hood 1, air 7 flows into the tapered hood 1 from the auxiliary hole 3 to suck in chips discharged from the woodworking machine. Sufficient suction power can be obtained.

[Effect of idea]

According to the present invention, by providing the auxiliary hole in the flared portion, the dust collection efficiency is increased without the accumulation of chips at the end of the tapered hood, and the clogging of chips in the flared portion can be prevented.

[Brief explanation of the drawing]

Figure 1 is a plan view showing one embodiment of the present invention, Figure 2 is a plan view showing one embodiment of the present invention;
The figure is a right side view of FIG. 1, and FIG. 3 is a plan view showing a conventional tapered hood. In the figure, 1 is a tapered hood, 2 is a flared portion, and 3 is an auxiliary hole.

Claims (1)

[Scope of utility model registration request] A tapered hood that is attached to a chip discharge port of a woodworking machine, etc. and connected to a dust collector to collect discharged chips, characterized by having a plurality of auxiliary holes in the flare part. Tapered hood.