JPH0116534B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a friction rice milling roll.

Conventional friction rice milling rolls are made of metal casting, have a hollow cylindrical shape, and have a desired number (usually two) of protrusions integrally provided on the outer periphery in the generatrix direction.

Therefore, since the friction roll has a hollow cylindrical shape, this roll cannot be manufactured without casting, and if the height of the protrusion is not sufficient, it can be easily increased. I couldn't do something like that.

In addition, if any part of the friction roll is damaged or worn out, even if the other parts are intact,
It cannot be repaired and the entire friction roll must be replaced.

The purpose of the present invention is to overcome the deficiencies of the known examples described above, and if the height of the protrusion is not sufficient, it is sufficient to replace it with one that is slightly higher. If these are made in advance, special rice polishing can be achieved by combining them.

In the present invention, a plurality of bar-shaped metal friction roll pieces are attached in parallel in the generatrix direction on the outer surface of a rotating body by any means, the friction roll pieces have a semicircular cross-sectional shape, and one side outer surface has a vertical direction. This is a friction type rice milling roll with an integrally bulging elongated ridge.

To explain with reference to the drawings, reference numeral 1 denotes a vertical grain feeding spiral, and double spirals 3 and 3' are integrally formed on the outer circumferential surface of a metal cylindrical portion 2 in a bulging manner. The grain feeding spiral 1 is formed of metal casting, and is formed separately from a mounting portion 4, which will be described later, and the grain feeding spiral 1 and the mounting portion 4 are connected at a joint with a pin or the like.

The cross section of the attachment part 4 has a cylindrical part 5 on the inside,
Several flat mounting surfaces 6 are formed on the outside. The mounting surfaces 6 in the embodiment are formed on both the front and rear surfaces and the left and right surfaces, and have a square bar shape, and the corner portions 7 have square grooves 8 formed toward the center.

The square groove 8 is formed in the shape of a slit over the entire top and bottom of the corner 7 of the mounting portion 4, and a roll presser 9 is provided to fit into the square groove 8. The roll presser 9 has a structure that fits snugly into the square groove 8 from the outside, and its inner surface 10 fits into the groove bottom 11 of the square groove 8 with a slight gap formed therein.

When the roll presser 9 is fitted into the square groove 8, its outer surface side 12 protrudes above the square groove 8, and the outer surface side 1
2 forms a presser portion 13 that opens outward in a tapered manner as it extends outward.

Screw holes 14 are provided at both upper and lower ends of the groove bottom 11 of the square groove 8.
14, and through holes 15, 15 are formed at the upper and lower ends of the roll presser 9 at positions corresponding to the screw holes 14. 16 is a set screw, which passes through the through hole 15 and is screwed into the screw hole 14, and the roll presser 9 is inserted into the square groove 8.
Fixed inside. At this time, the gap between the inner surface 10 and the groove bottom 11 has the effect of reliably tightening the set screw 16.

A communication port 18 communicating with the center portion 17 of the mounting portion 4 is formed at an intermediate position between the screw holes 14, 14 of the square groove 8. The communication port 18 is formed rather toward the bottom.

The roll presser 9 is formed with an air jet port 19 at a position corresponding to the communication port 18. The jet nozzle 19 is the fourth
As shown in the figure, it may be formed at the center of the width of the roll presser 9, but preferably, as shown in FIG. Cut diagonally from the side toward the center in the width direction. Naturally, in this case, the communication port 18 is formed at a position corresponding to the blowhole 19.

A rotating shaft 20 made of a hollow pipe is fitted inside the mounting portion 4 . The inner part of the screw hole 14 becomes a cylindrical part 21 that protrudes inward, and the inner surface 2 of the cylindrical part 21
2 has a structure that tightly contacts the outer surface 23 of the rotating shaft 20 (a slight gap may be formed between the outer surface 23 and the inner surface 22).

A plurality of through holes 24 are formed in the rotating shaft 20, and the inside of the rotating shaft 20 serves as a ventilation passage 25, which is connected to a blower. In other words, the wind passing through the ventilation passage 25 flows through the through hole 24.
After being blown out, the air passes between the rotating shaft 20 and the mounting portion 4, is blown out from the communication port 18, and is further blown out from the blowing port 19.

The roll presser 9 fits into all the square grooves 8, 8, and holds the rod-shaped friction roll piece 26 between the presser portions 13 facing each other.

The friction roll piece 26 may be formed of metal casting, but since the friction roll piece 26 is rod-shaped, it may be formed by forging, which is easy to manufacture. Both left and right sides 2 of the friction roll piece 26
7 is the inner end (bottom surface) so as to be sandwiched between the presser parts 13.
It is formed so that the width increases as it reaches . Of the two ends 27, one end 27 on the opposite rotational direction of the rice polishing roll is formed with a protrusion 28 that integrally projects from the one end 27 and extends to the upper and lower ends of the friction roll piece 26. The friction roll pieces 26 are made in many types with protrusions 28 having different heights. The outer surface 29 of the roll presser 9 that protrudes above the square groove 8 is formed on the same surface as the outer surface 30 of the friction roll piece 26, and except for the protrusion 28, the outer periphery of the assembled rice milling roll is circular. .

The inner surface (bottom surface) 31 of the friction roll piece 26 is structured to be in close contact with the mounting surface 6, and the manufacturing order is to bring the friction roll piece 26 into contact with each mounting surface 6, and then use the roll presser 9 to press it down. It is fitted and fixed with a set screw 16.

Next, we will discuss the effect.

Since the friction type rice milling roll of the present invention has the above-described configuration, first, the attachment part 4 is fitted on the outer periphery of the rotating shaft 20, and the grain feeding spiral 1 is fitted thereon, and the grain feeding spiral 1 and the attachment part 4 are joined together. The friction roll pieces 26 are attached to the mounting surfaces 6 on the front, rear, left and right sides of the mounting part 4.
The roll presser 9 is placed in contact with the inner surface 28 of the
When the roll presser 9 is inserted into the square groove 8, the presser portions 13, 13 on both sides of the roll presser 9 engage with the left and right sides 27 of the friction roll piece 26. In this state, when the through hole 15 and the screw hole 14 are aligned and the set screw 16 is inserted into the through hole 15 and screwed, the friction roll piece 26 is easily secured to the outer periphery of the attachment part 4, and the friction rice polishing roll is attached. Obtainable.

Therefore, when polishing rice, the friction roll piece 2
6 is formed of a single bar-shaped piece and is attached to the mounting part 4, so when it becomes damaged or worn, there is no need to replace the entire mounting part 4. Just loosen the setscrew 16 and replace the friction roll piece in that part. It is only necessary to replace the friction roll piece 26, and there is no need to replace the other friction roll pieces 26.

During rice milling, the air emitted from the blower passes through the ventilation passage 25, passes through the through hole 24 between the outer surface 23 and the cylindrical part 5, and blows through the communication port 18 to the blower port 19. Since the structure is such that wind is blown toward the ridges 28, the bran produced when the rice is polished by the ridges 28 is efficiently blown outward.

The present invention is as described above, and since the friction roll piece 26 is in the shape of a metal rod and not in the hollow cylindrical shape as in the past, it can be easily manufactured. When attaching the friction roll pieces 26 to the outer surface of the mounting surface 6, consider the height of the protrusions 28 formed on the friction roll pieces 26, and combine various combinations to make rice milling rolls to match the product quality. It is possible to perform polished rice.

Also, if a part is damaged, only that part needs to be replaced, which is extremely advantageous.

Moreover, since it is attached to the attachment part 4 by the rod-shaped roll presser 9, attachment is also easy.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the overall appearance, Fig. 2 is an exploded view of the same, Fig. 3 is a sectional view taken along A-A, Fig. 4 is a sectional view taken along B-B, and Fig. 5 shows the blowhole of the second embodiment. A sectional view showing,
FIG. 6 is an exploded view of FIG. 3. Explanation of symbols, grain feeding spiral...1, metal cylindrical part...
2, Double spiral...3, 3', Mounting part...4, Cylindrical part...5, Mounting surface...6, Corner part...7, Square groove...
8. Roll presser... 9. Inner surface... 10. Groove bottom...
11, External side...12, Holding part...13, Screw hole...14, Through hole...15, Set screw...16,
Center area...17, communication port...18, blowhole...1
9, Rotating shaft...20, Cylindrical part...21, Inner surface...2
2. External surface...23, Through hole...24, Ventilation path...2
5, Friction roll piece...26, Both left and right sides...27,
Projections...28, outer surface...29, outer surface...30, bottom surface...31.

Claims (1)

[Claims] 1 A plurality of bar-shaped metal friction roll pieces are attached in parallel in the generatrix direction to the outer surface of the rotating body by any means, and the friction roll pieces have a semicylindrical cross-sectional shape, and one outer surface has a protrusion extending in the vertical direction. A friction rice milling roll with an integrally bulged structure.