JPH0574637U - Gate opening and closing mechanism of Waiki Seiki - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a gate opening / closing mechanism of a Luo Seiki, which can automatically adjust the resistance applied to the discharge gate to obtain a constant Luo Se load. [Structure] A resistance arm 9 is attached to a discharge gate 8 provided at a discharge port of the polishing chamber 2, and the resistance arm 9 is connected to the discharge gate 8.
To open and close the discharge gate 8 by connecting to the drive arm 12 provided to the step motor 11 installed independently of the step motor 11, and to automatically control the step motor 11 by detecting the load current of the drive motor 3 of the polishing means. Is characterized by. [Effect] Since this device is configured as described above, a resistance arm is attached to the discharge gate provided at the discharge port of the lumbar sperm,
Since this resistance arm is connected to the drive arm provided on the step motor installed independently of the discharge gate to open and close the discharge gate, there is no restriction on the opening and closing degree of the discharge gate. It is possible to promptly respond even when it is desired to discharge the whole amount of the grains of the plant or when adjustment other than stabilization is required.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gate opening / closing mechanism of a polishing machine capable of automatically adjusting the resistance applied to the discharge gate to obtain a constant polishing load.

[0002]

[Prior Art]

 Conventionally, the polishing machine used in rice milling and milling drives a polishing motor such as a polishing roll installed in the polishing chamber with a drive motor or the like to polish the grains supplied to the polishing chamber. At that time, in order to slow down the rotation as the polishing work progresses, to keep the load in the polishing chamber constant during the polishing work, and to stabilize it, change the load caused by the above deceleration or flow rate change. I had to adjust. As shown in FIG. 3, a discharging gate 24 is provided at the discharging port 23 of the polishing chamber 22 that rotatably holds the polishing roll 21, and the opening / closing degree of the discharging gate 24 is adjusted.

Generally, the degree of opening / closing of the discharge gate 24 is adjusted by attaching an adjusting arm 25 to the rotation shaft of the discharging gate 24 and manually operating a weight 26 fitted in the adjusting arm 25. I'm doing it. However, it is difficult to adjust the position of the weight 26, and there is a drawback that a skilled engineer needs to make fine adjustments in order to obtain a desired lapping accuracy.

Therefore, as disclosed in Japanese Patent Laid-Open No. 59-39350, a step motor is used instead of the above weight, and the step motor is fitted into the adjustment arm and the pinion provided on the step motor and the adjustment are used. By engaging with the rack provided on the arm and inputting the pulse generated according to the increase and decrease of the load in the sperm chamber to the drive circuit of the step motor, the weight is driven to generate the sperm pressure corresponding to the opening and closing degree of the discharge gate. There is something I tried to get.

[0005]

However, in the above-mentioned conventional example, the weight to be driven by the motor is simply provided at the position of the conventional weight instead of the weight to be manually operated. There are difficulties in the design of the discharge gate, such as restrictions on the degree of opening and closing of the discharge gate, and difficulty in checking the accuracy of the hammer during operation.

This invention is intended to solve the above-mentioned drawbacks of the conventional example. A resistance arm is attached to the discharge gate, and the resistance arm is connected to a drive arm provided on a step motor installed independently of the discharge gate. Since the discharge gate is operated to be opened and closed, there is no restriction on the degree of opening and closing of the discharge gate, and it is possible to obtain the gate opening / closing mechanism of the Luh Seiki, which makes it easy to check the accuracy of grinding during operation.

[0007]

[Means for Solving the Problems]

 In other words, the gate opening / closing mechanism of this invention has a resistance arm attached to the discharge gate provided at the discharge port of the Seisei room, and this resistance arm is connected to a drive arm provided on a step motor installed independently of the discharge gate. In addition to opening and closing the discharge gate, the step motor is automatically controlled by detecting the load current of the drive motor of the polishing device.

[0008]

[Action]

 Since this invention is constructed as described above, a resistance arm is attached to the discharge gate provided at the discharge port of the sperm chamber, and the resistance arm is connected to the drive arm provided at the step motor installed independently of the discharge gate. Since the gate is opened and closed, there is no restriction on the opening and closing degree of the discharge gate. Can correspond to.

Further, it is possible to easily confirm the accuracy of grinding the discharged grains during the operation of the grinding machine, and it is possible to carry out accurate grinding.

[0010]

【Example】

 An embodiment of a gate opening / closing mechanism of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a columnar polishing roll made of a polishing material, which is rotatably held in a cylindrical polishing chamber 2. Then, it is driven by a drive motor 3 attached to the polishing chamber 2 via a V-belt (driving belt) 4 and a pulley 5. An ammeter (not shown) is attached to the drive motor 3.

The grains supplied into the polishing chamber 2 from the supply tank 6 installed on the polishing chamber 2 pass between the wall surface of the polishing chamber 2 and the peripheral surface of the polishing roll 1, and the lower part of the polishing chamber 2 It is discharged from the discharge outlet 7 provided at. In the meantime, a predetermined amount is stored in the polishing chamber 2 by the discharge gate 8 provided in the discharge port 7, and is subjected to a load between the wall surface of the polishing chamber 2 and the peripheral surface of the polishing roll 1 to be purified. It

As shown in FIG. 2, a resistance arm 9 is coaxially attached to the discharge gate 8 at a predetermined angle, and the resistance arm 9 is used to rotate the discharge gate 8. A step motor 11 is installed on the outer wall of the polishing chamber 2 irrespective of the discharge gate 8, and the step motor 11 rotates the drive arm 12 at a predetermined angle by a pulse from the control means. The drive arm 12 is connected to the resistance arm 9 by a connecting rod 13 to open / close the discharge gate 8.

At that time, the load in the polishing chamber 2 which changes with the progress of the polishing process is detected by the ammeter as a change in the current of the drive motor 3 of FIG. 1 for driving the polishing roll 1. The predetermined control is performed. That is, the polishing current of the polishing wheel 1 detected by the ammeter is input to the control means including a device such as a microprocessor including a CPU, and the step motor 11 is set so that the current value becomes a set current value. Control.

The rotation of the step motor 11 is transmitted to the discharge gate 8 by the drive arm 12 via the connecting rod 13 and the resistance arm 9, and the discharge gate 8 is opened and closed. In this way, the discharge gate 8 is automatically controlled by the step motor 11 to adjust the discharge amount of grain.

By adjusting the discharge amount of the grain, the resistance that the grain receives between the wall surface of the milling chamber 2 and the peripheral surface of the milling roll 1 also changes. In response to this, the load current value (smooth current value) of the drive motor 3 changes, and a new current value is obtained. By feeding this back to the control means and automatically repeating the above operation, the polishing current value approaches the set current value, and stable polishing work is performed.

In FIG. 1, reference numeral 14 is a level sensor attached to the supply tank 6, and even if the supply tank 6 becomes empty, the level sensor 14 keeps the opening / closing degree of the discharge gate 8 at that time by a signal from the level sensor 14. By doing so, it is possible to immediately respond to the input of the next lot of grains.

Further, even if the power is turned off due to a power failure or the like, if the degree of opening / closing of the discharge gate 8 at that time is stored in the CPU or the like, it is possible to immediately cope with the power being turned on again.

Further, when it is urgent to replace the grain put into the polishing chamber 2 with another lot, and when the grains need to be discharged from the polishing chamber 2 at one time, the discharge gate 8 causes the step motor 11 to move. It is quickly opened by the operation of. At this time, if the opening / closing degree of the discharge gate 8 is stored, the opening / closing degree can be immediately restored to the original opening / closing degree even when the patient is rehabilitated.

Further, by the control means, when the snoring current value becomes high during scouring, the scouring current value can be dealt with at high speed, and when the scouring current value becomes low, it follows at low speed, so that the overload in the scouring chamber 2 can be prevented. Of course, the opening / closing speed of the discharge gate 8 can be set arbitrarily.

Further, the mechanism described above can quickly respond to changes in the value of the smelting current, and therefore, if the load on the grain exceeds the expected value, the load can be immediately released (escaped).

[0022]

[Effect of the device]

 Since this invention is constructed as described above, a resistance arm is attached to the discharge gate provided at the discharge port of the sperm chamber, and the resistance arm is connected to the drive arm provided at the step motor installed independently of the discharge gate. Since the gate is opened and closed, there is no restriction on the opening and closing degree of the discharge gate, and it is quick even when it is urgent to discharge all the grains in the semen chamber or when adjustments other than stabilization are required. Can correspond to.

In addition, it is easy to confirm the grinding accuracy of the discharged grains during operation of the grinding machine, and accurate grinding can be performed.

[Brief description of drawings]

FIG. 1 is a schematic view showing one embodiment of a gate opening / closing mechanism of a Lu Seiki of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a schematic view of a conventional example.

[Explanation of Codes] 1 Sakusei Roll 2 Sakusei Chamber 3 Drive Motor 4 V Belt (Drive Belt) 5 Pulley 6 Supply Tank 7 Discharge Port 8 Discharge Gate 9 Resistance Arm 11 Step Motor 12 Drive Arm 13 Connecting Rod 14 Level Sensor

Claims (1)

[Scope of utility model registration request] 1. A resistance arm is attached to a discharge gate provided at a discharge port of a spermatozoon, and the resistance arm is connected to a drive arm provided to a step motor installed independently of the discharge gate to open and close the discharge gate. A gate opening / closing mechanism of a polishing machine, wherein the step motor is automatically controlled by detecting a load current of a driving motor of the polishing machine.