JPS61129044A - Rice huller - 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 (Industrial Application Field) The present invention relates to a rice hulling machine that performs hulling work with a joy roll.

(Prior art) In addition, at the start of unhusking work, if the gap between the rolls to be removed is too wide, the shedding rate will be reduced, and on the other hand, if the rolls are extremely close to each other or in contact with each other, the paddy will be removed between the rolls. This may cause the rice to get stuck, resulting in damaged rice or wear on the rolls. Therefore, as a means to solve this problem,
There is a method, such as Japanese Patent Laid-Open No. 56-91851, in which the motor is reversely rotated for a predetermined period of time after the rolls come into contact with each other to keep the gap opening between the rolls at a constant level.

(Problem to be Solved by the Invention) However, with the structure described above, the operator waits for the roll gap to be automatically adjusted before starting the operation of supplying paddy to the rolls to be removed (for example, the operation of opening the shank). ￥), the operation of hulling operations becomes complicated and efficiency may decrease.

(Means for Solving the Problem) The present invention aims to solve the above technical problem, and has taken the following technical means.

That is, a roll gap adjusting means capable of adjusting the roll gap of the rotatably installed shedding row/roll 1), a switching means capable of switching the state of supplying paddy to the shedding roll (1), and a main motor. a drive current detection means capable of detecting a drive current, and a signal output means for outputting a signal indicating that the roll gap is "open" to the roll gap adjustment means when the drive current detection means detects a contact state of the rolls; When the "open" signal is output, the switching means is switched to the paddy supply state, and the load control is enabled to detect the load of the machine and automatically adjust the roll gap.

(Function) First, when the contact state of the roll (1) to be removed is detected by the drive current detection means, the signal output means outputs a signal indicating that the roll gap is "open" to the roll gap adjustment means. Then, the roll gap of the shedding row/L/(1) is increased by this roll gap adjustment means, but during this time, the switching means switches to the paddy supply side and supplies the paddy to the shedding roll (1). When the hulling operation is started, load control is performed in which the load on the hulling machine is detected and the roll gap is automatically adjusted in relation to the hulling operation.

(Effects) During the roll "open" operation, the paddy is supplied to the rolls (1) that are taken off, so it is possible to prevent damage caused by getting caught between the rolls (1) that are taken off, and when the main motor is started. Can prevent overload. Moreover, since this paddy supply can be automatically performed during the roll "open" operation, the labor of the worker can be reduced and the efficiency of the hulling operation can be improved. Furthermore, since load control is performed following the paddy supply operation during the roll "open" operation, this load control can be stabilized.

(Example) Hereinafter, an example of the present invention will be specifically described with reference to the drawings.

First, to explain its composition, the roll to take off (1)
are arranged side by side on the left and right and are installed rotatably in the two arrow directions inside the casing (2). Among the rolls to be taken off (1), one of the rolls to be taken off (1) is installed in the middle part of a movable plate (3) whose lower part is pivotally connected. Then, the movable plate (
3) The upper end portion is screwed into a threaded portion (5) provided at one end portion of the adjustment shaft (4). Further, a pin (6) is inserted through and fixed to the other end of the adjustment shaft (4).
) are provided so as to be able to fit onto ribs (8) formed on the inner surface of the rotating case (7) in which the ends of the adjustment shaft (4) are housed. At the side end of the rotating case (7), there is an adjustment drive gear α that meshes with a motor gear α0 attached to the shaft end of the geared motor (9) (roll gap adjustment means).
υ is removably fixed with a screw.

(2) is a regulating bolt that regulates the movement of the rotating case (7) in the null direction.

Therefore, when the geared motor (9) rotates, this rotational power is transferred to the adjustment drive gear 01 meshing with the motor gear αO.
) to the rotating case (7), the lip (8) rotates together with the rotating case (7) and connects the pin (6) and the adjustment shaft (4) integrated with this pin (6). Rotate. When the geared motor (9) rotates in the forward direction, the screwed part of the movable plate (3) moves in the direction of the arrow (illustration) around the pivot part, so the pleasure roll (A) also moves in the same direction. direction to widen the gap with the other roll.On the other hand, when the geared motor (9) reverses, the movable plate (3) and the falling row w (A) move in the opposite direction to the arrow (X) direction. The rolls move sideways to narrow the gap between the rolls or come into contact with each other.

Q3 is the casing (
2) It is a funnel stand provided at the upper end and having a paddy supply port α→ on the bottom surface. A paddy feed roller (to) is installed below the paddy supply port α→ to be rotatable in the direction of the arrow, for feeding the falling paddy to the row tv (1) from which it is removed.

In addition, the tip of the funnel stand α has a paddy feed roller α.
A funnel opening/closing plate α0 that can be switched between supplying and stopping the feed to the low TV (1) that removes the paddy supplied into the funnel stand α1 by adjusting the perspective to υ
is rotatably mounted on an axis αη. And the axis (17)
An opening/closing hand/opening/closing hand with one end rotatably attached to the opening of the funnel base α, the other end bent 90 degrees and then bent further 90 degrees to protrude outward from the operation panel α.
7 QLJ is established. And the opening/closing hand /I/
O'e O# On the side end of ear white Q3, the funnel opening/closing plate α
A detachable opening/closing cam (A) is detachably attached to the lower surface of Q, and a handle rotating body (A) having a receiving plate Q1) on the upper surface is detachably attached to the bent side.

On the back side of the operation panel (to), a solenoid base (c), which has a solenoid (c) (switching means) for reciprocating the plunger handle in the direction of the arrow, is attached and detachable with a screw (not shown). It is set up in The tip of the plunger is provided with an opening/closing hand/
L/Q (L) can be rotated in the direction of the arrow (see Figure 4), and the vertical movement is regulated by the arm receiving plate (E) (
) is removably attached.

The wing is a spring whose one end is attached to the stay 4 attached to the back of the spring /I/ (to), and the other end is attached to the shaft end of the opening/closing hand /I/wing. ” operation (movement in the direction of arrow A), or the opening/closing cam is held at position A in connection with the “open” operation of the opening/closing handle α, and the opening/closing cam is opened/closed in connection with the “close” operation of the opening/closing handle α. The cam (A) is configured to be held at position B (see Fig. 1).

Next, to explain the block circuit shown in Fig. 5, the arithmetic control unit (hereinafter referred to as CPU) of the Kanha microcomputer contains necessary data such as control programs, constants (5), and preset reference values. Input ports (7) 01 corresponding to respective inputs and outputs, including a memory (not shown)
)(2) and an output capo -I, and performs arithmetic and logical operations and comparison operations. The input port (1) is connected to the output side of a comparator (b) whose input side is connected to the respective output sides of the analog switch (to) and the D/A converter (to). There is. Still, the D/A converter (to) is connected to the CP.
It is connected to the input port 0η (to) of U@ that can input and output.

The input side of the analog switch (to) is connected to a current transformer that detects the drive current of the main motor (the motor that drives each rotating part of the huller) via an amplifier circuit (to) and a rectifier circuit. (drive current detection means). Therefore, the driving current detected by the current transformer and input from the analog switch (to) to the comparator (b) via each circuit (to) is converted into a digital quantity and input to the CPU. Port (1
).

The drive command signal given from the CPU is sent to the output port (
Relay circuit 0 which can energize the solenoid (c) that opens the funnel opening/closing plate α0 via b)), the forward rotation drive circuit (6) and the reverse rotation drive circuit section ( signal output means). Then, when a signal of "H" level ~ is output to the forward rotation drive circuit (6) side, the geared motor (9) rotates forward to "open" the roll gap, and the reverse rotation drive circuit (foundation) side The geared motor (9) is configured to rotate in reverse when an "H" level signal is output to "close" the roll gap.

The CPU screen has the following functions. In other words, ■When the main motor drive command signal is input, the output port (T)
A drive command signal is output to turn the analog switch (to) 1-ONj. ■Captures the digital amount of drive current of the main motor. ■Memorize the roll slight contact current obtained by adding a preset constant to the main motor drive current when no load is applied. ■Outputs a drive command signal to the reverse drive circuit (goods) via the output port■. ■Compare the drive current of the main motor and the slight contact current. ■Set the timer. ■Output port□
A drive command signal is output to the normal rotation drive circuit (6) via □□.

■Output the drive command signal to the relay circuit 0]) via the output port. (2) Output a drive command signal to the forward rotation drive circuit (6) or reverse rotation drive circuit which adjusts the roll gap by comparing the drive current of the main motor under load with a preset reference value (performs load control).

Next, to explain the operation using the flowchart in Fig. 6, first, when the main motor drive operation is performed, the main motor is driven and rotates each rotating part of the huller, and the CPU fi that inputs this operation outputs an "ON" drive command signal from the output port (to) to the analog switch (to). Then, the drive current of the main motor during this no-load state is measured (step 510), and then converted into a digital quantity and taken into the CPU screen via the input circuit (1). Next, the roll slight contact current obtained by adding a constant (5) to the no-load current (that is, the current is slightly larger than the no-load current) is stored (step 520), and the output port A drive command signal is output to the reverse rotation drive circuit through the reverse drive circuit to narrow the roll gap (step 530). Then, the drive current of the main motor at this time is measured (step 540), and this measured value is compared with the roll slight contact current (step S50), and when the measured value becomes larger than this roll slight contact current, the rotation is reversed. The output of the drive command signal to the drive circuit (goods) is stopped (step 560).

Continuing, after the timer is ticked (step 57)
0), a drive command signal is sent from the CPU via the output circuit (6) to the forward rotation drive circuit (6), and the roll gap is opened.
(step 580). Then, when the time set by the timer has elapsed (step 590), the timer is reset (step 5100), and then the timer is set again (step 5ilo), and a drive command is issued from the CPUH to the relay circuit υ via the output port ■. A signal is output and the solenoid (c) is energized (step 3120). Then, the plunger handle moves in the direction of the arrow (A) and pulls the arm (A) in the same direction, so the catch plate and the handle rotation body handle also move in the same direction (see Figure 4). Arrow (b)
direction) to rotate the opening/closing handle α value.

At this time, the opening/closing handle α9 is further pulled and held by the spring, and the opening/closing cam (A) also rotates from the B position to the A position. (see FIG. 1), the paddy fed into the funnel stand α1 is fed in a predetermined amount by the paddy feed roller αQ to the side of the roll (1), which removes the paddy by a predetermined amount.

In such work, when the set time of the timer has elapsed (step 5130), the drive command signal given from the CPU@) to the relay circuit I/41) is stopped and the solenoid (C) is de-energized ( Step 314.0
), the opening/closing handle (II) does not automatically return to its original position because it is pulled by the spring (in this case it is past the fulcrum) as described above.

Further, the load current of the main motor measured by the current transformer is converted into a dental quantity, which is input to the CPU fi via the input circuit, and compared with a preset reference value. and,
If this measured value is smaller than the reference value, a drive command signal is output from the CPU@ to the reverse rotation drive circuit (incorporated), and conversely, if it is larger, a drive command signal is output from the CPU to the forward rotation drive circuit (6). Then, load control is performed to "close" or "open" the roll gap (step 5150). Thereafter, it is also possible to switch from load control to a semi-control operation in which the shedding is performed based on the shedding rate of paddy and brown rice.

In this way, after bringing the rolls (1) into slight contact, the gap between the rolls is set to ``open.'' At this ``open'' speed, paddy is automatically supplied and removed, and the process shifts to load control. It is possible to save the labor of the operator and to stabilize the load control.

In addition, when stopping the undressing operation, the operator rotates the opening/closing hand/L/4 that protrudes outward from the machine body from the operation panel α mark in the opposite direction of the arrow (b) to a predetermined position. From then on, it is pulled and held by a spring, and
The opening/closing cam (a) also moves from the A position to the B position, rotates the funnel opening/closing plate IJG in the direction opposite to the direction of the arrow (b), that is, upward, and the paddy feed roll Falling can be prevented.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a side sectional view of the device for taking off, Fig. 2 is a top view of the opening/closing plate of the ``lunger'', and Fig. 3 is a ``lunger''. Fig. 4 is a sectional view of the opening/closing handle, Fig. 5 is a block circuit, and Fig. 6 is a flow chart. (1) shows the roll being taken off.

Claims (1)

[Claims] A roll gap adjustment means capable of adjusting the roll gap of the dehulling rolls (1) rotatably installed, a switching means capable of switching the paddy supply state to the dehulling rolls (1), and a drive current of the main motor. a detectable drive current detection means; and a signal output means for outputting a roll gap "open" signal to the roll gap adjustment means when the drive current detection means detects a contact state of the rolls; A rice hulling machine configured to enable load control in which the switching means is switched to a paddy supply state during output, and the load on the machine is detected to automatically adjust the roll gap.