JPH0520146B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use This invention relates to a so-called hulling rice milling machine for peeling paddy to make brown rice, polishing brown rice to make white rice, or continuously obtaining white rice from paddy. It is something.

BACKGROUND TECHNOLOGY In this type of conventional rice milling machine, the opening/closing device for the paddy shutter installed at the outlet of the paddy tank and the starting device for the dehulling fan for hulling are provided independently from each other. Even if the rotation speed of the dehulling fan does not reach the specified speed after starting, the paddy shutter can be opened, so that the paddy in the paddy tank will fill the dehulling fan through the discharge port. There is a risk that the depuration effect may be disabled.

A malfunction prevention device has been devised to avoid such a phenomenon (see Utility Model Publication No. 60-27455).
The prevention device is cumbersome in its structure and operation, and it is not easy to operate it.

In addition, with conventional rice hulling machines, even after the hulling is finished and the rice in the hulling tank is empty, the hulling switch is left as it is, and if you forget to press the next stop switch. , it will continue to spin idly until you push it. Furthermore, if the rice milling switch is left in the same state when rice milling is finished and you forget to press the stop switch, the same result will occur.

Problems to be Solved by the Invention The purpose of the present invention is to solve the problem of the conventional rice hulling machine mentioned above, namely, when the hulling operation is started, the paddy shutter fails before the number of revolutions of the hulling fan reaches a predetermined speed. By eliminating the need to open the fan inadvertently, it is possible to prevent the paddy fan from filling up with paddy and making its operation impossible, and the operation can be easily achieved by simply pressing a switch. The purpose is to

Another purpose is that during hulling work, when the hulling work is finished and the paddy stuck in the hulling tank is empty, you can hold down the hulling switch and press the next stop switch. Even if you forget to press the button, it will not continue to run idly until you press it, and even if you leave the rice polishing switch in the same position when rice milling is finished and forget to press the stop switch, The goal is to prevent the machine from continuing to run idly.

Means for Solving the Problems The rice hulling machine of the present invention has a belt with a tension pulley wrapped around a drive pulley, a dehulling fan pulley, and a rice husk fan pulley that are interlocked with a rice milling device equipped with a main motor, and a belt with a tension pulley is wound around the rice shredder of the paddy tank and the rice husk fan pulley. , each of the brown rice shutters of the brown rice tank is coupled via a switching lever so as to be interlocked with the swinging arm of the tension pulley, and a swinging delay device is interposed between the switching lever and the paddy shutter; A geared motor is connected to the swing shaft of the switching lever by a worm and a worm wheel, a position detection cam is fixed to the swing shaft, and a pair of limit switches are arranged around the position detection cam at a distance from each other, Furthermore, each of the main motor and the geared motor is electrically connected to a control section which is connected to a power supply section, a time switch, mode switches for hulling, stopping, and rice milling, and each of the aforementioned limit switches.

Function: When hulling with the hulling machine of this invention, the required amount of rice is first loaded into the rice tank, the time required to hull that amount is estimated in advance, and a little extra time is added to that time. The time required for hulling is set as the time required for hulling, and the time switch is set to the time required for hulling, and the power supply current is applied to the control section.

Next, press the rice hulling switch of the mode switch to rotate the main motor and the rice polishing machine linked to it, and determine the rotation direction of the geared motor via the control unit, and press the tension pulley from the neutral position by moving the switching lever. The belt is swung in the direction to tighten the belt and rotate the shedding fan pulley and the rice husk fan pulley.

At this time, the paddy shutter connected to the switching lever is stopped by the action of the swing delay device interposed between them, and therefore does not open. If the switching lever is then continued to swing in the same direction, the action of the delay device reaches its limit, and if the switching lever continues to swing further, the paddy shutter will be opened.

At this time, the paddy in the paddy tank is supplied through the opening to the rotating dehulling fan, which dehulls it and turns it into brown rice, which is then supplied into the unpolished rice tank.
Also, the rice husk generated at that time is sucked by a rice husk fan, discharged from the rice husk outlet to the outside of the machine, and stored in a rice husk bag.

In this way, even if all of the paddy in the paddy tank becomes brown rice and is transferred to the brown rice tank, each part continues to rotate while remaining in the hulling state for the amount of time the time switch previously set. When the extra time has passed and the above-mentioned time required for hulling, which is set in the time switch, becomes zero, the output signal of the time switch at that time starts reversing the geared motor via the control section. At the same time, reverse the switching lever and close the paddy shutter.

When the switching lever is further reversed to the neutral position, the pressure on the tension pulley is loosened, and the rotation of the dehulling fan and rice husk fan is stopped, and the output signal from the limit switch linked to the switching lever causes the control section to be activated. The rotation of the main motor is stopped via the

When performing rice milling work, put brown rice in the brown rice tank, add the extra time to the estimated time required to mill the brown rice, set it as the milling time, and set it on the time switch.
When the rice milling switch is pressed, the main motor starts, and the rice milling machine that is linked to it starts. At the same time, the geared motor is swung in the opposite direction to that for hulling through the control unit, and the rotation of the geared motor causes the neutral position switching lever to be moved in the opposite direction to the swinging direction for hulling. When the machine rotates, the brown rice shutter in the brown rice tank opens and the brown rice in it is supplied to the rice milling device to start milling, and the milled rice is discharged from the milling outlet to the outside of the aircraft.

In this way, even if all of the brown rice in the brown rice tank becomes white rice and is transferred to the white rice container, each portion continues to rotate while remaining in the polished state for the amount of time the time switch previously set. When the margin time has passed and the rice milling time of the time switch becomes zero, the output signal of the time switch starts reversing the geared motor via the control unit, and in conjunction with this, the switching lever is rotated to remove the brown rice. Close the shutter.

When the switching lever continues to be reversed and returned to its original neutral position, the rotation of the main motor is stopped via the control section by an output signal from a limit switch interlocked with the switching lever.

Embodiment An embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. Each of the tank 5, the dehulling fan 6, the rice husk fan 7, and the wind sorting device 8 is attached to the casing 10.
A rice hulling switch 11, a stop switch 12, and a rice polishing switch 13 are installed on the upper surface of the casing 10, and each pilot lamp 11a, 12a, 1 lights up in synchronization with each of these switches.
3a, a rice bran bag 14 is provided on the side of the casing 10, and a cyclone 15 and a rice husk bag 16 connected thereto are provided on the rear side.

In addition, the rice milling device 3 is directly connected to the rotating shaft 9 of the main motor 1, and a driving pulley 17 is fixed thereto, a husking fan pulley 18 is fixed to the rotating shaft 19 of the husking fan 6, and a rice husk is attached to the rotating shaft 20 of the rice husk fan 7. Fix the fan pulley 21.

A belt 22 is wound around these drive pulley 17, dehulling fan pulley 18, and rice husk suction fan pulley 21, a tension pulley 25 is brought into contact with this belt 22, and this tension pulley 25 is swung around the shaft 23. The swing arm 2 is provided at the tip of the swing arm 24 which is freely provided.
4 is provided with one end of a tension pulley wire 27 and a return spring 26, and the wire 27
The switching lever 38, which is connected to the other end via the tension pulley wire terminal 56 with an elongated hole 59 and the pin 63, can swing around its swing shaft 40 in the direction of arrow A38 or in the opposite direction. Depending on the tension pulley 25 and the belt 22,
The rice husk fan pulley 21 and the dehulling fan pulley 18 described above are rotated or stopped.

Also, one end of a paddy shutter wire 32 and a return spring 33 are connected to a paddy shutter 31 provided at the outlet 30 of the paddy tank 5, and the other end of the paddy shutter wire 32 is connected to the tip of a swinging delay lever 34. When the lever 34 is rotated in the direction of arrow A34, the rice shutter 31 is opened, and when it is rotated in the opposite direction, the rice shutter 31 is slid by the elasticity of the return spring 33 and the outlet 30 is closed.

At this time, the swinging delay lever 34 is rotated by moving the switching lever 38 around the swinging shaft 40 as indicated by the arrow A.
The lever 38 rotates in the 38 direction and does not rotate until the engaging portion 28 at the upper end of the lever 38 engages with the engaged portion 34a of the lever 34, and after that engages, the lever 38 rotates.

Next, one end of the brown rice shutter wire 47 and the return spring 37 are connected to the brown rice shutter 36 provided at the outlet 35 of the brown rice tank 2, and the other end of the brown rice shutter wire 47 is connected to the brown rice shutter terminal with the elongated hole 66. 65 and pin 64, and when the lever 38 is rotated in the direction opposite to the direction of arrow A38, the brown rice shutter 36 is opened, and when the lever 38 is rotated in the direction of arrow A38, the return spring 37 is opened. Close it with elastic.

Furthermore, a second pivot shaft 40 of the switching lever 38
As shown in the figure and Fig. 3, the geared motor 4
1 is connected by a worm 42 and a worm wheel 43, and a position detection cam 44 is fixed to the swing shaft 40, and a position detection cam 44 is mounted around the position detection cam 44 at a distance c on the circumference from each other as shown in FIG. A limit switch 45 for hulling and a limit switch 46 for rice milling are arranged, and as shown in FIG.
0, and electrically connects the control section 50 to the power supply section 49, time switch 48, hulling switch 11, stop switch 12, rice milling switch 13, the aforementioned limit switches 45, 46, and changeover switches 51, 52. Furthermore, the power supply section 49 and the control section 50 are connected to each other by a control wiring 67, a gear mode wiring 68, and a common ground wire 6, as shown in FIG.
Connect with 9.

In this invention, when hulling is performed, a power switch (not shown) is turned on in advance to energize the power supply section 49 and the control section 50, and the required amount of paddy 53 is stored in the paddy tank 2.
The time required for hulling that amount is predicted in advance, and a slight margin time is added to that amount to determine the required time for hulling, and the time required for hulling is set on the time switch, and the hulling switch 11 is turned on. By pressing the button, the main motor 1 and the rice polishing device 3 interlocked with the main motor 1 are rotated via the control unit 50, and the rotation direction of the geared motor 41 is determined via the control unit 50 to rotate it. Warm 42,
By rotating the worm wheel 43 and the swing shaft 40, the switching lever 38 is moved around the swing shaft 40.
is rotated in the direction of arrow A38, so that the engaging portion 28 formed on the switching lever 38 is connected to the delay lever 34.
When the fan pulley 18 and the rice husk fan pulley 21 rotate until just before they engage with the engaged portion 34a, the dehulling fan pulley 18 and the rice husk fan pulley 21 start rotating as described above and gradually reach a predetermined rotational speed.

When the switching lever 38 continues to rotate further, the engaging portion 28 is moved to the engaged portion 34a of the delay lever 34.
, the delay lever 34 is rotated in the direction of arrow A34, and moved from the position shown by the solid line in FIG. 2 to the position shown by the chain line.

At the same time, the rotation of the position detection cam 44 fixed to the swing shaft 40 activates the limit switch 45 for detecting the hulling position to stop the geared motor 41.

During this time, the paddy shutter 31 is opened as described above, and the paddy 53 in the paddy tank 5 is supplied to the dehulling fan 6, which is rotating at the predetermined rotational speed, and is dehulled. The husked brown rice and rice husks are sent to the wind sorting device 8 through the flip-up duct 6a, where they are wind-sorted into brown rice and rice husks, and one of the brown rice is put into the brown rice tank 2 through the brown rice outlet 8a. The other rice husk is sucked through the duct 7a by the suction force of the rice husk fan 7 rotated by the above-mentioned rice husk fan pulley 21, and is also sucked through the discharge duct 7.
It reaches a cyclone 15 via b, where it is separated into air and rice husks, and the rice husks are stored in a rice husk bag 16.

In this way, when the hulling is completed and the paddy 53 in the paddy tank 5 is empty, the operation continues in a no-load state, and around that time, the set time of the time switch 48 is reached, and the electricity at that time is The signal automatically reaches the control unit 50 (or when the stop switch 12 is manually pressed when the hulling is finished and the paddy 53 in the paddy tank 5 is empty), the control unit 50 in FIG. As a result of the operation, the geared motor 41 is rotated in the opposite direction to the above-mentioned direction, and the switching lever 38 is moved along the chain line 38b in FIG.
During the first half of the period, the delay lever 34 returns from the chain line 34b position to the solid line position due to the elasticity of the return spring 33, and the paddy shutter is closed. The switching lever 38 is connected to the chain line 38a.
While the tension pulley 25 rotates from the position to the neutral position indicated by the solid line, the tension pulley 25 loosens its pressure against the belt 22 due to the elasticity of its return spring 26, and the shredding fan pulley 18 and the rice husk fan pulley 21 stop their rotation and remove the paddy. This is the end of the printing process. When performing rice milling work, use the brown rice that has been hulled by the above-mentioned huller and stored in the brown rice tank, or separately put brown rice 54 in the brown rice tank 1, and calculate the estimated time required to mill the brown rice. Add the extra time to the rice milling time, set it on time switch 48, and then set rice milling switch 1.
When 3 is pressed, the main motor 1 starts, and the rice milling device 3 that is linked to this starts. At the same time, the control unit 5
0, the geared motor 41 swings in the opposite direction to that for hulling, and the rotation of the geared motor 41 causes the switching lever 38 in the neutral position to swing.
When the brown rice shutter 36 of the brown rice tank 2 is rotated in the opposite direction to the swinging direction A38 during hulling, the brown rice shutter 36 of the brown rice tank 2 is opened and the brown rice therein is supplied to the rice milling device 3 and rice milling starts. The position detection cam 44 fixed to the rice polishing limit switch 46
, the rotation of the geared motor 41 is stopped, and the switching lever 38 is stopped at that position.

During this time, the belt 22 remains loose and is connected to the brown rice shutter 36 via the brown rice shutter wire 47.
is opened, the brown rice 54 in the brown rice tank 2 is fed into the rice milling device 3 which is being rotated by the main motor 1, and the rice is polished. The rice bran is stored in the rice bran bag 14 on the side of the machine using the suction and ejection forces of .

In this way, even if all of the brown rice 54 in the brown rice tank 2 becomes white rice and is discharged from the outlet 55, each portion remains in the polished state and continues to rotate for the margin time of the time switch 48 set earlier. Continuing, when the extra time elapses and the set time of the time switch 48 becomes zero, then the time switch 4
8 starts reversing the geared motor 41 via the control unit 50, rotates the switching lever 38 in the direction of arrow A38 to return to the original neutral state, and closes the brown rice starter 36 accordingly. At the same time, the rotation of the main motor 1 is stopped via the control section 50 by the output signal of the limit switch interlocked with the switching lever, and the rice milling is completed.

When the above-mentioned rice milling is completed, instead of operating the time switch 48, the stop switch 12 is manually pressed, the geared motor 41 is reversed via the control device 50, and the switching lever 38 is moved in the direction of arrow A.
It is also possible to complete rice milling by rotating in 38 directions and returning to the original neutral state.

Although the present invention has been described above with reference to the embodiments shown in FIGS. 1 to 8, the present invention is not limited thereto, and may be implemented by changing to other structures or adding other structures within the scope of the gist. It is also possible to do so.

For example, instead of setting the time by providing a memory indicating the time required for hulling or a scale indicating the amount of polished rice in the time switch 48, the time switch 48 may be set in memory to indicate the completion of hulling, or when milling rice, the time is set in memory to indicate the completion of hulling. By matching the quantity display memory, it is also possible to perform quantitative rice milling in which the desired amount of polished rice is milled and the machine stops.

Effects of the Invention This invention, as described above, solves the problems of the conventional rice hulling machine, namely, when starting the hulling operation, the paddy shutter is inadvertently turned off before the hulling fan reaches a predetermined rotation speed. To open a dehulling fan to prevent paddy from clogging in the fan and making it inoperable, and to easily operate it by simply pressing a time switch and a hulling switch. At the same time, a time switch is connected to the control section of the geared motor, and the geared motor is swung in the opposite direction when the time is over. Even if you keep the huller switch pressed and forget to press the stop switch when the loaded rice is empty, it will not continue to idle until you press it, and the rice milling will continue. Even if you leave the rice milling switch in the same state and forget to press the stop switch when the rice milling switch is finished, the time switch will work and the machine will not continue idling.
So-called hands-off operation can be performed in both hulling and rice milling, and the operation is extremely easy.

[Brief explanation of the drawing]

The accompanying drawings show embodiments of the present invention; FIG. 1 is a side view of the main part of the present invention, FIG. 2 is an enlarged side view of a portion of FIG. 1, and FIG. 3 is a right side view of FIG. Fourth
The figure is a detailed side view of a part of Fig. 1, Fig. 5A is a diagram of the angular displacement of the switching lever or the time after the start of swinging at the opening of the paddy shutter, and Fig. 5B is the time when the tension pulley is crimped. A diagram of the displacement versus time after the angular displacement or swinging of the switching lever starts; Fig. 6 is an electric circuit diagram of the device; Fig. 7 is a slope view of the rice hulling machine of the invention; Fig. 8 is its diagram. It is an enlarged longitudinal cross-sectional view. 1...Main motor, 2...Brown rice tank, 3...Rice polishing device, 4...Rice bran fan, 5...Paddy tank, 6
...Shedding fan, 7...Rice husk fan, 17...Drive pulley, 18...Shedding fan pulley, 19...
Rice husk fan pulley, 22...belt, 24...swing arm, 25...tension pulley, 31...paddy shutter, 34...delay lever, 36...brown rice shutter, 38...switching lever, 41...geared Motor, 45... Limit switch for hulling, 4
6... Limit switch for rice polishing, 48... Time switch, 49... Power supply section, 50... Control section, 6
9...Commercial power supply.

Claims (1)

[Scope of Claims] 1. A belt with a tension pulley is wound around a drive pulley, a dehulling fan pulley, and a rice husk fan pulley that operate in conjunction with a rice milling device equipped with a main motor, and a paddy shutter in a paddy tank and a brown rice shutter in a brown rice tank, respectively. is connected to the swinging arm of the tension pulley via a switching lever so as to be interlocked with the swinging arm of the tension pulley, a swinging delay device is interposed between the switching lever and the paddy shutter, and a swinging shaft of the switching lever is connected to the swinging arm of the tension pulley. A rice huller characterized in that a geared motor is coupled and each of the main motor and geared motor is electrically connected to a control section coupled to a power supply section, a time switch, a mode switch, and a limit switch for detecting the hulling and milling positions. Rice milling machine. 2. A belt with a tension pulley is wound around a drive pulley, a dehulling fan pulley, and a rice husk fan pulley that operate in conjunction with a rice milling device equipped with a main motor, and each of the paddy shutter of the paddy tank and the brown rice shutter of the brown rice tank is connected to the tension pulley. A swing delay device is interposed between the switching lever and the paddy shutter, and a geared motor is connected to the swinging shaft of the switching lever to connect the worm and the worm. connected by a wheel, and a position detection cam is fixed to the swing shaft,
A pair of limit switches are arranged around the position detection cam at a distance from each other, and each of the main motor and geared motor is connected to a power supply section, a time switch, a mode switch, and a limit switch for detecting the hulling and milling positions. A rice hulling rice polishing machine characterized by being electrically connected to a control unit.