JPS6283047A - Drive for rice-cleaning machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive device for a rice milling machine, particularly a circulating private rice milling machine, and includes a protrusion provided on the side surface of a pulley rotatably attached to a drive shaft directly connected to a stirring blade; This is a drive device for rice milling machines consisting of a ram fixed to the drive shaft, which utilizes the reaction force when the belt stretched between the pulley and the motor/pulley stops, and when in operation, the protrusion hits the ram. Press down to rotate the drive shaft, and when stopped, the reaction force creates a gap between the protrusion and the ram, and when restarting, the centrifugal acceleration due to the rotation of the pulley is concentrated on the protrusion, driving its fulcrum. By colliding with the lever that acts as the core of the shaft, the impact moment can easily rotate the stirring blades, thereby eliminating and reducing the excessive load that is applied when starting the remoter.

In particular, if the rice milling machine is stopped with the grain still in the milling chamber, a larger torque than normal is required to restart it, which may overload the motor and make it impossible to start. It is often seen that. If this happens frequently, the motor may burn out, and in order to deal with this situation, it is usually necessary to remove the grains from the milling chamber each time, or rotate the pulley in the opposite direction by hand to some extent. By doing so, the above-mentioned overload is removed,
Alternatively, it was customary to think that restarting the grain could be facilitated by loosening some of the grains that were tightly packed inside the milling chamber. In particular, today's small home rice milling machines require a small and compact configuration due to the power supply (usually single-phase 100V) and power consumption, especially in relation to the living space. Since the configuration to further enhance the maximum pumping effect with a large motor is a major technical issue, the above-mentioned problems tend to occur more frequently, and it became an urgent task to find a way to eliminate these problems.

A notable invention that has recently tackled this problem (Special Publications 51
-22, JP-A-54-66255, JP-A-58-494
41, Japanese Unexamined Patent Publication No. 59-120254, etc.)
-130064, Utility Model 55-58237, Utility Model 55
-25132, Utility Model 55-163042, Utility Model 57
-86637, Utility Model No. 59-13003, etc.), but all of them were concerned with the relationship between the grains remaining in the milling chamber and the stirring blade, and the stirring blade was moved slightly in the opposite direction. By rotating the grain, it is possible to reduce the density of the grains and reduce the excessive load at startup, and the reaction force of the coil spring is mainly used to rotate the drive shaft more or less in the opposite direction. The components were designed to move, or they were designed to do this electrically. This resulted in a complex configuration, and the ease of assembly had to be taken into consideration.

As described above, the present invention consists only of a protrusion provided on the side surface of a pulley that is rotatably attached to a drive shaft directly connected to a stirring blade, and a ram that is fixed to the drive shaft. The above purpose is achieved only by the reaction force of the belt. In other words, as the density of grains in the milling chamber increases during milling, the pulley and motor
The belt stretched between the pulleys is extremely tensioned on the side that enters the motor pulley, and the opposite side rotates with that much slack, and when the motor stops, the tension side goes from the slack side until the tension on both sides is balanced. When the belt is rotated, the belt is shifted, but if the grains remain in the working state in the milling chamber, the belt is shifted to the tension side by rotating the motor pulley, and the bias is driven by the drive. It was confirmed through experiments that the mating pulley, which is rotatably attached to the shaft, is given kinetic inertia to rotate in the opposite direction, and this reaction force is used in the configuration described above to effectively and easily eliminate the above-mentioned hindrance. This is what I did.

To explain the embodiment, A is a casing of the main body of the rice milling machine, B is a milling tube, C is a space formed by the milling roll 3 and the milling tube B, that is, a milling chamber, and I4 is a stirring blade. 1
is a hopper into which brown rice is placed, and the brown rice is sent to the milling chamber C through the supply port at the bottom of the hopper. Reference numeral 2 denotes a drive shaft, which is directly connected to a milling roll 3 equipped with stirring blades 4. Reference numeral 5 denotes a drive pulley, which is attached to a bearing 11 fixed on the drive shaft 2 and is rotatable. 7 is a protrusion fixed to the side surface of the pulley, and 8 is a ram fixed to the drive shaft 2, the upper part of which comes into contact with the protrusion 7. 9 is a belt stretched between the drive pulley 5 and the motor pulley 6, 10 is a bearing fixed to the drive shaft, and 11 is a motor.

12 is the supply port for brown rice. 13 is an elastic body.

To explain the operation, when brown rice is loaded into the hopper 1 and the motor 11 is started, the brown rice is fed into the milling chamber from the supply port.
rotates, and the protrusion 7 provided on the side of the pulley contacts and pushes the ram 8, applying rotational moment to the drive shaft whose fulcrum is the same window as the fulcrum of the ram 8, causing it to rotate, and the projection 7 contacts the ram 8. The rice mill continues milling by transmitting the driving force of the motor.

If the rice milling machine suddenly stops in the middle of milling, the density of grains in the milling chamber is high, so as explained above, the belt 9 has to reverse the pulley in order to restore the uneven tension state to equilibrium. The protrusion 7 on the pulley 5 is separated from the ram 8 fixed to the drive shaft in the opposite direction. At the time of restart, this distance helps to rapidly increase the starting torque of the motor, and the impact on the rammer 8 caused by the protrusion 7 described above creates a large rotational moment against the drive shaft 2, causing an increase in the starting torque of the motor. This assists in eliminating and reducing overload when starting the motor, and easily eliminates the inability to start due to overload when restarting the motor. In addition, if the rotating moment of the stirring blade is required to be larger depending on the model of the rice milling machine, as shown in Figure 4, fix an appropriate elastic body to the rammer at one end and leave the other end open. By further applying the reaction force of the elastic body to the pulley 8, which contacts the protrusion 7 at its released end and prevents it from rotating in the opposite direction when stopped, the distance is further increased and the effect is further increased. The accompanying drawings are illustrations of embodiments of the present invention. FIG. 1 is a side sectional view of the device, FIG. 2 is a front configuration diagram of the main parts, FIG. 3 is a sectional view of the same side, and FIG. be.

A...Body casing B... Pounding tube C... Semen chamber Tohoppa 2... Drive shaft 3...Bukisei roll 4. Stirring blade 5... Drive pulley 6. Motor pulley 7.Protrusion 8...Kaiko 9--Belt 10...Bearing 11...Motor 12... Supply port 13...Elastic body

Claims (2)

[Claims] (1) A drive device for a rice polishing machine consisting of a protrusion provided on the side of a pulley rotatably attached to a drive shaft directly connected to a stirring blade, and a ram fixed to the drive shaft. (2) In the drive device of a rice milling machine, which consists of a protrusion provided on the side of a pulley rotatably attached to a drive shaft directly connected to the stirring blade, and a ram that is fixed to the drive shaft, the ram is made of an elastic material. A drive device characterized in that one end is fixed and the other end is open.