JP3637588B2 - Rice mill resistance adjuster - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a resistance adjusting device for a rice mill.
[0002]
[Prior art]
As a means for adjusting the pressing force of the resistance plate of the rice mill, there is one that uses a coiled spring to pressurize, for example, Japanese Patent Publication No. 57-45617, but the spring is contracted when a high pressure is applied to the resistance plate. And the clearance of the spring that should absorb the fluctuation of the milled rice discharge pressure becomes small, and the responsiveness of the resistance plate decreases. As a result, there is a risk of causing unevenness and clogging.
[0003]
In order to solve the above problems, a U-shaped spring is used as a pressing force adjusting means for a resistance plate of a rice mill that responds well to discharged milled rice and energizes a constant pressure, for example, JP-A-55. -165148. However, in the pressing force adjusting means using the U-shaped spring, the adjustment knob and the cam are shifted from the front of the milled rice discharge port, that is, on the axis of the milled rice roll. The complexity of the structure is unavoidable and the cost is high.
[0004]
[Problems to be solved by the invention]
In view of the above problems, the present invention provides a resistance adjusting device for a rice mill that improves the responsiveness to the milled rice to be discharged and keeps the pressing force of the resistance plate constant, and is more compact and simple. Technical issue.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the means of the present invention is a resistance adjusting device for adjusting the degree of whitening by adjusting the pressing force of a resistance plate provided opposite to the polished rice discharge port, the resistance adjusting device Has one end rotatably supported by a support shaft and holds a resistance plate, and one side is fixed to the other end of the resistance plate holding body and arranged in the milled rice discharge direction. A spring member, a cam plate abutting on the spring member and having a rotation shaft arranged substantially on the axis of the milling roll, and an adjustment knob for rotating the cam plate are provided.
[0006]
Therefore, the present invention has the following effects. By rotating the adjustment knob in a predetermined direction and rotating the cam plate, the spring member in contact with the cam plate is moved. The movement of the spring member becomes the rotation of the resistance plate holder around the support shaft as it is, and the resistance plate is pressed toward the milled rice discharge port side. The response of the resistance plate during operation of the rice mill is absorbed by the bending of the spring member, that is, the elasticity of the spring member. Accordingly, the pressing force of the resistance plate at the milled rice discharge port is adjusted by the rotation of the cam plate, and the response of the resistance plate during operation can be handled by the elasticity of the spring member.
[0007]
The elasticity of the spring member can be changed by changing the length, thickness or cross-sectional shape. Therefore, the length can be shortened by changing the material and shape. Therefore, unlike the conventional coil spring, the resistance adjusting device can be made sufficiently compact even if the spring member is arranged in the milled rice discharge direction and the adjustment knob is arranged in front of the milled rice discharge port as in the present invention. it can.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS.
[0009]
In FIG. 1, a rice milling machine 1 has a box-shaped outer frame 2 with a dehulled white cylinder 3 mounted horizontally, and a rotating horizontal shaft 4 is inserted into the dehulled white cylinder 3. A motor 5 as a drive unit is directly connected to the rotating horizontal shaft 4. Further, a whitening trochanter 6 and a spiral trochanter 7 are respectively mounted on the rotating horizontal shaft 4, and a whitening chamber 8 is formed between these and the pulverized whitening cylinder 3. A hopper 9 that stores raw grain before milling is provided above the milling and whitening cylinder 3, and a discharge port 10 of the hopper 9 is connected to a rice feed port 11 provided on the rice feed side of the milling chamber 8. On the other hand, a milled rice discharge trough 12 and a milled rice discharge port 14 provided with a resistance adjusting device 13 are provided on the side of the milled rice 8 in the milled rice.
[0010]
The resistance adjusting device 13 is configured to adjust a pressing force of a resistance plate 15 provided so as to be press-contacted facing the milled rice discharge port 14 with an adjusting knob 16 to obtain a predetermined milling pressure. As shown in FIG. 2, the resistance plate 15 is pivotally attached by a holding plate 18 having a U-shaped cross section via a holding pin 17. The upper end portion of the holding plate 18 is fixed to the hollow shaft 19, and the support shafts 20 horizontally mounted on both side walls of the polished rice discharge basket 12 are loosely fitted into the hollow shaft 19.
[0011]
On the discharge side of the polished rice discharge port 14, an inverted L-shaped cover 21 is provided in both side walls of the polished rice discharge trough 12 and covers the holding plate 18, and both upper side surfaces of the inverted L-shaped cover 21 are disposed. In between, the hollow shaft 19 is positioned. Thus, the holding plate 18 and the inverted L-shaped cover 21 are rotatably provided around the support shaft 20. In addition, a nut (not shown) is welded to the inner side of the lower side of the inverted L-shaped cover 21, and knob bolts 22 are screwed in from the outer sides of both sides of the polished rice discharge trough 12, so Is fixed to the milled rice discharge trough 12.
[0012]
Further, a cam shaft 24 with a cam plate 23 attached to one end is inserted into the front (anti-milled rice discharge port side) wall of the inverted L-shaped cover 21, and the adjustment knob 16 is attached to the front side end of the cam shaft 24. Axis.
[0013]
One end of a leaf spring 26 is fastened to the lower end of the holding plate 18 with a bolt 25. The free end of the leaf spring 26 is in contact with the cam plate 23, and when the cam plate 23 rotates, the leaf spring 26 is pushed down (in the direction of arrow a), thereby holding the holding plate about the support shaft 20. 18 rotates, and the resistance plate 15 is pressed toward the polished rice discharge port 14 side (arrow b direction).
[0014]
An engaging plate 27 corresponding to the upper end portion of the holding plate 18 is provided at the lower end of the upper side surface of the inverted L-shaped cover 21. The engaging plate 27 engages with the upper end portion of the holding plate 18 fixed to the hollow shaft 19 when the inverted L-shaped cover 21 is rotated upward about the support shaft 20, and the holding plate 18 is inverted L A gap 28 is provided for delaying and interlocking with the movement of the letter-shaped cover 21.
[0015]
Next, the operation of the rice mill configured as described above will be described. When the motor 5 is driven and the rotary horizontal shaft 4 rotates, the brown rice stored in the hopper 9 passes through the discharge port 10 and flows down from the supply port 11 to the whitening chamber 8. The brown rice is crushed by the spiral trochanter 7 and the milled trochanter 26, and then discharged from the milled rice discharge port 14, flows down the milled rice discharge basket 12, and is discharged out of the milling machine 1. In the milled rice discharge port 14, the flow of rice in the milling chamber 8 is restricted by the resistance adjusting device 13 that presses the resistance plate 15 to the milled rice discharge port 14 side by the leaf spring 26. Brown rice is refined by rubbing each other.
[0016]
The operation of the resistance adjusting device 13 will be described in detail. By rotating the adjustment knob 16 in a predetermined direction and rotating the cam plate 23, the leaf spring 26 that comes into contact with the cam plate 23 is pushed downward (in the direction of arrow a). As a result, the holding plate 18 rotates around the support shaft 20, and the resistance plate 15 is pressed toward the milled rice discharge port 14 (in the direction of arrow b). Further, during operation, the resistance plate 15 responds to the milled rice to be discharged by the elasticity of the leaf spring 26 (see FIG. 3). Therefore, the pressing force of the resistance plate 15 is adjusted by the rotation of the cam plate 23, and the response during operation can be handled by the elasticity of the leaf spring 26.
[0017]
In the embodiment described above, the pressing force adjusting means using a plate-like member as the spring member has been described. However, the shape of the spring member is not limited to the above. For example, as shown in FIG. 4, (b) not only a plate shape but also (b) a rod shape or (c) a cross section having a square shape can be implemented. In addition, the material of the spring member can be freely selected as long as it is elastic, such as metal, hard rubber, and plastic, that tends to return when bent. Furthermore, it is possible to shorten the length of the spring member by changing the material and shape of the spring member. Therefore, even if the adjustment knob is arranged in front of the milled rice discharge port, the spring member is shortened and the resistance is reduced. The adjusting device can be made compact.
[0018]
【The invention's effect】
The resistance adjusting device for a rice mill according to the present invention has a simple configuration including only a resistance plate, a support shaft, a resistance plate holder, a spring member, a cam plate, and an adjustment knob. The response pressure of the plate can be kept constant and the apparatus can be made compact.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a rice mill in one embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view of a main part in FIG.
FIG. 3 is an explanatory diagram of the operation.
FIG. 4 is an enlarged sectional view of a spring member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rice milling machine 2 Box-type outer frame 3 Dehulling white cylinder 4 Rotating horizontal axis 5 Motor 6 Whitening trochanter 7 Spiral trochanter 8 Polishing chamber 9 Hopper 10 Discharge port 11 Rice feed port 12 Polished rice discharge rod 13 Resistance adjustment device White rice discharge port 15 Resistance plate 16 Adjustment knob 17 Holding pin 18 Holding plate 19 Hollow shaft 20 Support shaft 21 Reverse L-shaped cover 22 Knob bolt 23 Cam plate 24 Cam shaft 25 Bolt 26 Leaf spring 27 Engaging plate 28 Gap

Claims (1)

A resistance adjusting device that adjusts the degree of whitening by adjusting the pressing force of a resistance plate provided opposite to the milled rice discharge port, the resistance adjusting device having one end rotatably supported by a support shaft, and A resistance plate holding body that holds the resistance plate, a spring member that is fixed in one end to the other end of the resistance plate holding body and arranged in the milled rice discharge direction, and abuts against the spring member and rotates A resistance adjusting device for a rice mill, comprising: a cam plate having a shaft arranged substantially on the axis of the rice mill roll; and an adjustment knob for rotating the cam plate.

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