JPS624178B2 - - Google Patents

Description

[Detailed description of the invention] According to the standards, the rubber roll for hulling used in rice hulling machines has a roll width of 63.7 mm (2.5 inches), 76 mm (3 inches), 102 mm (4 inches), and 165 mm (6.5 inches). inch), and as the roll width increases, the hulling capacity also increases, and when the rubber roll wears out, it must be replaced.

Therefore, if the roll width is the same for different brands of hullers, there is no difference in the hulling capacity.

An object of the present invention is to improve the hulling ability even when the roll width is the same.

To explain the embodiment shown in the drawings, soft rubber layers 2 and hard rubber layers 3 having a width slightly smaller than the width of rice are alternately formed on the outer periphery of a metal cylindrical body 1 such as an iron plate.

When a pair of rubber rolls of the present invention are arranged opposite each other in the conventional manner, and one of them is rotated faster than the other to supply paddy between both rubber rolls, the paddy is rubbed and the chaff is peeled off, resulting in brown rice.

However, the soft rubber layer 2 in the rubber roll of the present invention wears out and becomes dented more quickly than the hard rubber layer 3, creating uneven portions on the surface of the rubber roll and increasing its surface area. increases. Furthermore, since the width of the soft rubber layer 2 of the present invention is slightly smaller than the width of the paddy, even if the soft rubber layer 2 is worn out and dented, there is no fear that the paddy will fall into the dent and not come out.

In the embodiment shown in FIG. 1, disks of a soft rubber layer 2 having a width slightly smaller than the width of the paddy and disks of a hard rubber layer 3 having the same width are alternately fitted around the outer periphery of a cylindrical body 1 made of an iron plate. It was then baked.

In the embodiment shown in Fig. 2, soft rubber plates 2 slightly thinner than the width of a paddy, which are bent into similar shapes, are alternately superposed on the inside of hard rubber plates 3, which are bent wider toward the outside of both legs. , in the center is a hard rubber plate 3
A group of rubber bodies A into which a is inserted are connected to a metal cylindrical body 1
They are printed in a radial arrangement around the outer periphery of the

In the embodiment shown in FIG. 3, a strip of hard rubber layer 3 is superposed on a strip of soft rubber layer 2 having a thickness slightly smaller than the width of rice, and this is spirally formed into a metal cylinder 1. It is wrapped around the outer circumference of the paper and baked.

Reference numeral 4 denotes a boss fixed to the center of the interior of the cylindrical body 1. A rotating shaft is inserted into the central hole 5 of the boss 4, and the boss 4 is detachably fixed to the rotating shaft by an appropriate means.

The thickness of the hard rubber layer 3 is made equal to or thicker than the thickness of the soft rubber layer 2.

[Brief explanation of the drawing]

The drawings show different embodiments of the invention.
The figure is a vertical side view, and FIG. 2 is a vertical front view, with some parts omitted. FIG. 3 is a perspective view, and the omitted end face of the strip is shown in cross section. 1 is a metal cylinder, 2 is a soft rubber layer, and 3 is a hard rubber layer.

Claims (1)

[Claims] 1. A rubber roll for hulling rice, which is formed by alternately forming soft rubber layers and hard rubber layers with a width slightly smaller than the width of rice on the outer periphery of a metal cylindrical body.