JPH10165828A - Controller for husking roll gap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure the exactness of the initial gap setting at the time of starting husking with a pair of husking rolls. SOLUTION: The initial setting of the roll gap is executed without driving the husking rolls 24, 25 at the time of starting husking work. A roll gap control motor 28 is rotated to open and is kept run until the prescribed number (X) of the detecting holes 57 of a detecting plate 58 rotating integrally with an adjusting screw rod 56 are counted. The roll gap control motor 28 is then rotated to close and the time (t) to count the prescribed number (X) of the detecting holes 57 is measured. The reference time (Δt) required for the passage of the one detecting hole 57 is computed. Further, the close rotation is continued and the detection time (Δt1) required for the passage of the one detecting hole 57 and the reference time (Δt) are compared. When the detection time (Δt1) is longer than the reference time (Δt), the fine contact of the husking rolls 24, 25 is decided and the close rotation is stopped. The roll gap control motor 28 is then rotated to open for the time the prescribed number of the detecting holes 57 pass. The roll gap is thus set at the prescribed initial gap.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a control device for a hulling roll gap, and more particularly, to an initial control of a hulling roll gap between a pair of hulling rolls. It concerns the setting of the gap.

[0002]

2. Description of the Related Art In the prior art, in setting an initial gap between a pair of hulling rolls, a load gap adjusting motor is opened and adjusted while driving the hulling roll, so that a load current is controlled. When the load current value is detected by the sensor and the detected load current value does not change, it is determined that the hulling roll is in a non-contact state, and the opening adjustment is stopped. Then, the roll gap is closed and adjusted. When the current sensor detects an increase in the load current value, it is determined that the hulling roll is in slight contact, and the closing adjustment is stopped.
The roll gap is opened and adjusted to set the roll gap to a predetermined initial gap.

[0003]

However, the setting of the initial gap of the conventional hulling roll is performed by detecting the load current value of the motor driving the hulling roll with a load current sensor. Therefore, depending on the power situation depending on the location of the hulling machine,
When setting up the huller, you must adjust the standard values, etc.
Even if the adjustment is made, the power situation changes depending on the time of day, so that it is difficult to properly set the initial roll gap.

[0004] Therefore, the present invention is to solve the drawbacks of the conventional device.

[0005]

The present invention employs the following technical means in order to solve the problems of the prior art. That is, the present invention provides a grain hopper 20
A pair of hulling rolls 24, 25 for hulling the paddy supplied from the hulling hopper 20, and the hulling rolls 24, 25
Roll gap adjusting means for opening and closing the roll gap, a roll gap control motor 28 for driving the adjusting screw rod 27 of the roll gap adjusting means in the forward and reverse directions, and a predetermined setting of the adjusting screw rod 27. The rotation detecting means capable of detecting the rotation state of the angle, and the rotation detection of the rotation detection means and the detection of a change in the rotation speed performed in a non-driven state of the hulling rolls 24 and 25.
And an initial gap setting means for setting an initial gap of the hulling roll gap.

[0006]

At the start of the hulling operation, the initial setting of the roll gap is performed without driving the hulling rolls 24, 25. That is,
First, when the roll gap control motor 28 is rotated to the open side and the number of the detection holes 57 of the detection plate 58 which rotates in association with the adjusting screw bar 27 is counted a predetermined number (X), the opening rotation is started. The motor is stopped, and then the roll gap control motor 28 is rotated to the closing side to measure the time (t) for the detection hole 57 to count the predetermined number (X), and when one detection hole 57 passes. The required reference time (Δt) is calculated. Next, the closing rotation is further continued, and the detection time required to pass through one detection hole 57 (Δt
1) is compared with the reference time (Δt), and the detection time (Δt)
When 1) is longer than the reference time (△ t), the hulling roll 2
It is determined that the contact is small at 4, 25, and the closing rotation is stopped. Then
The roll gap control motor 28 is rotated to the open side by the initial gap rotation for detecting a predetermined number of the detection holes 57, and the roll gap is set to a predetermined gap, and the initial gap setting control ends.

[0007]

According to the conventional apparatus, the load current value of the motor for driving the hulling rolls 24, 25 is detected by the load current sensor while driving the hulling rolls 24, 25. Although it has been difficult to properly set the initial roll gap due to changes in the power situation at the installation site, the present invention reduces the influence on the power situation and changes in the surrounding temperature while reducing the initial roll gap. Since the hulling roll is not driven at the time of setting the gap, the overload of the transmission mechanism at the time of contact between the hulling rolls can be prevented, and the durability can be improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. 1 is a building where an unmanned hulling rice mill is installed.
The interior is partitioned by a partition wall 2 into an operation room 3 and a machine room 4. On the operation room 3 side, there are a raw material padding section 5, an operation panel 6, a white rice extracting section 7, and the like. On the machine room 3 side, a charging hopper 8, a rice hulling elevator 9, a rice hulling machine 10, a rice polishing machine. 11, a rice mill 12, a bran processing unit 13 and the like are provided.

As shown in FIG. 2, the raw material padding section 5 has a raw material placing table 15 on the operation room 3 side and a machine space 4 side before and after the opening 14 of the partition wall 2. The feeding hopper 8 is configured to face each other. A feeding gutter 17 is provided below the feeding hopper 8 in which a feeding spiral 16 is provided. One end of the shaft of the feeding spiral 16 is connected to a feed driving motor 18. , And can be driven to rotate. 19 is a sieve screen.

The feed terminal of the feed gutter 17 is viewed from the lower hopper of the huller 9, and the upper part of the huller 9 communicates with the hulling tank 20 of the huller 10. A grain supply valve 21 is provided below the paddy tank 20. The hulling machine 10 is composed of a pair of hulling rolls 24 and 25. The hulling rolls 24 and 25 rotate at different peripheral speeds, and one hulling roll 24 is rotated by the other. Can be moved to and away from the hulling roll 25 by the roll gap adjusting means. That is, as shown in FIG. 3, the hulling roll 24 is supported by a swinging member 26, and an adjusting screw rod 27 screwed to the tip side of the swinging member 26 is controlled by a roll gap control. By rotating the motor 28 in the normal and reverse directions, the motor 28 is moved far and near with respect to the hulling roll 25 on the fixed side, so that the roll gap can be adjusted to be wide and narrow.

Reference numeral 29 denotes a polished rice wind selection section for wind-selecting the polished rice, 30 a transfer spiral for collecting light pity and the like separated from the polished rice, and 31 a mixed rice. Floating gutter for leaking and removing small rice in the inside.
Reference numeral 3 denotes a dust cylinder. Hulling rolls 24, 25 and transfer spiral 3
The drive unit such as 0 is driven by the drive motor 34 of the huller.

The discharge spiral end of the transfer spiral 30 is
It communicates with the hulling elevator 9. The mixed rice that has flowed down from the downflow gutter 31 is communicated with a lower hopper section of the rice mill 11 via an appropriate transfer section. The frying unit of the rice mill 11 faces the brown rice tank 55 of the rice mill 12. The milling machine 12 is of a known type in which a milling roll (not shown) is provided in a milling chamber 35, and the bran separated from the platinum net (not shown) is separated by a bran transport fan (not shown). It is transported to the rice bran processing unit 13. The outlet side of the refining chamber 35 communicates with the white rice tank 36 of the white rice extraction unit 7.

The bran processing section 13 includes a cyclone 36a, a bran transfer spiral 37 for horizontally transferring the bran that has fallen below the cyclone 36a, a bran transfer trough 38, and the bran transfer trough 3 described above.
8 is composed of a discharge part opened to the middle part and the terminal side, and bran bags 39, 39 for receiving the rice bran from the discharge part. As shown in FIG. 4, the operation panel 6 on the operation room 3 side has a raw material inputtable lamp 40, a coin number display lamp 41, a coin mech 42, a paddy / brown rice selection switch 43, as shown in FIG.
a, 43b, whiteness selection switches 44, 45, 46 (in the example shown, three white / standard / three-eighth levels can be selected), a charge table 47, and the like.

The coin mech 42 is provided with a discriminating portion for inserted coins, a coin sensor 48 operated for each inserted coin, and the like. The operation panel 6 is provided with a control unit (CPU) 49 having a built-in microcomputer for performing drive control of each unit drive motor and the like. The arithmetic control unit (CPU) 49 includes detection information from the coin sensor 48, whiteness selection information from the whiteness selection switches 44, 45, 46, and selection of rice / brown rice from the rice / brown rice selection switches 43a, 43b. Information, a detection signal of the load current detector 50 of the huller motor 34 of the huller 10, a clock signal, and the like are input.

On the other hand, the output information includes a control signal to the supply driving motor 18, a control signal to a grain supply adjusting motor (not shown) for adjusting the grain supply valve 21, and the hulling machine 10.
Control signal to the rice huller motor 34, the control signal to the elevator motor 51 for driving the elevators 9 and 11, the control signal to the rice miller motor 52 for driving the rice mill 12, the bran transfer spiral 37. Control signal to the bran transfer motor 53 for driving, whiteness adjustment motor 5
4 and an open / close command signal to the roll gap control motor 28, and the like.

Next, based on FIG. 6 and FIG.
The roll gap adjusting means 4 and 25 will be described. When the adjusting screw rod 27 is rotated in the normal or reverse direction by the roll gap control motor 28, the roll gap between the hulling rolls 24 and 25 is opened and closed. A detection plate 58 having detection holes 57, 57,... Is attached to the adjusting screw rod 27 at equal intervals on the same circumference, and the rotation state of the detection holes 57, 57,. Is detected, and the detection information is input to the control unit 49.

Next, a hulling machine which is performed at the start of the hulling operation
The control of the initial gap setting of the tools 24 and 25 will be described. The initial gap setting control of the roll gap is executed when the drive motor 34 for driving the hulling machine is stopped and the hulling rolls 24 and 25 are stopped. First, the roll gap control motor 2
8 is rotated to the open side, and the number of the detection holes 57 that have passed during the rotation is counted by the optical sensor 59, and stops when the counted number reaches a predetermined number (X).

Next, the rotation of the roll gap control motor 28 is started to close, and at the same time, a timer (not shown) is operated.
The optical sensor 59 measures a time (t) for counting the predetermined number (X) of the detection holes 57, and then, detects one detection hole 5.
The reference time (Δt) required for passing through 7 is calculated and stored. Further, the detection time (△ t1) required to continue rotation to the closing side and pass through one detection hole 57 and the reference time (△ t1)
When the detection time (△ t1) is longer than the reference time (△ t), it is determined that the hulling rolls 24 and 25 are in slight contact, and the closed side is detected. Stop spinning to.

Next, an initial gap setting command is output to the roll gap control motor 28, and the roll is rotated to the open side until a predetermined number of detection holes 57 having a roll gap of 1 millimeter pass therethrough.
The roll gap is set to, for example, 1 millimeter, and the initial gap setting control ends. However, in the unmanned rice milling facility, since the amount of rice milling per operation is relatively small, a predetermined amount of rice is supplied from the rice tank 20 with the roll gap set in the initial gap fixed. While hulling.

In the above-described embodiment, when the work is started,
Although the configuration is such that the initial gap setting control of the gap is performed, the configuration may be performed after the completion of the milling operation, and the next operation may be such that the hulling machine 10 can hulling immediately from the start of the operation. Also, a predetermined number of detection holes 57 in the final stroke are used.
The rotation of the initial gap through which the number of the detection holes 57 can be adjusted by a switch (not shown) can be set to a desired initial roll gap. In addition, this control may be performed on a commercially available huller.

The initial gap between the conventional hulling rolls 24 and 25 in the hulling machine of the unmanned hulling rice mill is set by a driving motor for driving the hulling rolls 24 and 25 by a load current sensor. This is a configuration in which detection is performed by detecting a load current value. The power situation differs depending on the installation location of the unmanned facility. In the case of setting the initial gap of the roll gap by the load current value, the reference value must be adjusted when the hulling machine 10 is installed. However, since the power situation changes depending on the time of the day, it was difficult to perform the hulling work at an appropriate roll gap.

However, by adopting the above configuration, the influence on the power situation and the ambient temperature change can be reduced, and the hulling roll is not driven when the initial gap of the roll gap is set. -It is possible to prevent the transmission mechanism from being overloaded due to mutual contact between the transmission mechanisms, thereby improving the durability.
The CPU 49 mainly has the following functions.

The coins inserted into the coin mech 42 (10
The number of coins (0 yen coin) is read, and the initial gap setting of the hulling roll is started. Then, first, the roll gap control motor 28 is opened and rotated, and stops when the number of the detection holes 57 is counted a predetermined number (X). Then, the roll gap control motor 2 is stopped.
8 is closed, the time (t) during which the detection hole 57 counts the predetermined number (X) is measured, and then the reference time (Δt) required for one detection hole 57 to pass is calculated. Furthermore,
Comparing the detection time (Δt1) required to pass the one detection hole 57 and continuing the closed rotation and comparing the detection time (Δt1) with the reference time (Δt), the detection time (Δt1) is longer than the reference time (Δt). Then, it is determined that the hulling rolls 24 and 25 are in slight contact, and the rotation to the closing side is stopped.

Next, an initial gap rotation is performed in which the roll is opened while the predetermined number of detection holes 57 pass through the roll gap control motor 28, and the roll gap is set to, for example, 1 millimeter. Then, the initial gap setting control ends. Then, while keeping the roll gap set in the initial gap in a fixed state, the paddy is hulled while supplying a predetermined amount of paddy. When the setting of the initial gap is completed, the operation time T is calculated from the number of inserted coins, and the supply drive motor 18, the huller motor 34 for driving the huller 10 and the like are driven over the calculated time T. Output drive signal.

The above control is performed by detecting that the number of coins inserted into the coin mech 42 is equal to or more than a predetermined number (for example, two) and outputting a control execution signal to be executed only for a predetermined short time t. I do. When the control execution time elapses, the roll gap of the hulling rolls 24 and 25 is set to the initial gap while maintaining the hulling roll gap at the elapse of the control time t or at the end of work. Set and exit. If the roll gap is completed with the initial gap set, the initial gap setting control of the roll gap is omitted at the start of the next operation.
Immediately, the operation time T is calculated from the number of inserted coins, and the supply drive motor 18, the drive motor 34 of the rice huller 10, etc. are driven for a predetermined time to start the operation.

Next, the operation of the above embodiment will be described. In the case where the raw material is paddy, coins enough to secure the operation time corresponding to the amount are inserted into the insertion opening of the coin mech 42, then the "paddy" selection button 43a is pressed, and finally the whiteness selection switches 44 and 45 , 46, and the degree of milling is set. Once you ’re ready for these settings,
Although the paddy is put into the input hopper 8, each unit of the apparatus starts operating at the same time as coin insertion, and the paddy from the input hopper 8 is transferred by the supply spiral 16 and supplied into the hulling elevator 9. The unhulled paddy from the hulling elevator 9 is supplied to the paddy tank 20, and then, through the grain supply valve 21, which is adjusted and set to a predetermined opening degree in advance in accordance with the setting of the “paddy”. It is supplied onto the hulling rolls 24 and 25 which are set at a predetermined initial roll gap. The raw rice is hulled by the rotation of the hulling rolls 24 and 25, and the lower air selection unit 29
During this time, light rice husks and pity are removed, and the mixed rice is supplied from the downflow gutter 31 to the rice mill 12 via the rice mill 11.

In the milling machine 12, a milling roll (not shown) is rotated to separate the brown rice grains, including partially unmilled grains, which are successively supplied, from the surface bran layer or the rice hulls with a platinum net. And white rice. The polished rice passes through the polished rice extraction section 7 and is appropriately operated in the operation room 3.
It is collected inside. When the time T set by the input amount elapses, the operation of each part of the hulling machine 1 is first stopped by the supply driving motor 18 of the supply spiral 16 and delayed by a predetermined time.
0, the rice milling machine 12 etc. is stopped, and the hulling elevator 9,
Grain residue in the rice mill 11 and the whitening room can be reduced.

Next, when the raw material is brown rice grains, the "brown rice" selection button 43b is pressed to start the operation. Then, the grain supply valve 21 in the paddy tank 20 is closed by a grain supply adjusting motor (not shown), and the gap between the hulling rolls 24, 25 is controlled by the roll gap adjusting motor 28. Is adjusted so that the brown rice is not hulled by the two hulling rolls. After the hulling roll gap is adjusted to expand as described above, the grain supply adjusting motor (not shown) is adjusted to open.

Thus, the paddy from the input hopper 8 is transferred by the supply spiral 16 and supplied to the hulling elevator 9 to be hulled.
In addition, the water is supplied to the milling machine 11 through the falling down gutter 31 through the grain supply valve 21 and the hulling rolls 24 and 25 whose gaps are adjusted to expand. In addition, another brown rice channel may be formed in the brown rice tank 20 or the hulling elevator 9 so that brown rice is supplied to the rice mill 11 without passing through the hulling rolls 24 and 25.

Next, a rice mill 12 through a rice mill 11
The rice bran, ground rice hulls, etc., which are supplied and refined and discharged through the refined platinum net, are air-conveyed to the bran processing unit 13 and transferred through the cyclone 36a by the bran transfer gutter 38, while the bran bags 39, 39 Will be collected.

[Brief description of the drawings]

FIG. 1 is an overall plan view

FIG. 2 is a flowchart showing the outline of the apparatus.

FIG. 3 is a side sectional view of the huller.

FIG. 4 is a front view of the operation panel.

FIG. 5 is a block diagram.

FIG. 6 is a cut side view, a front view, and a side view of a main part.

FIG. 7 is a graph showing a detection state of an optical sensor.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Building 2 ... Partition wall 3 ... Operation room 4 ... Machine room 5 ... Raw material input part 6 ... Operation panel 7 ... White rice taking out part 8 ... Input hopper 9 ... Rice hulling elevator 10 ... Rice hulling machine 11 ... Rice milling machine 12 ... Rice polishing machine 13 ... Bran processing unit 14 ... Opening 15 ... Raw material table 16 ... Supply spiral 17 ... Supply gutter 18 ... Supply drive motor 19 ... Sieving net 20 ... Rice tank 21 ... Grain supply valve 24,25 ... Rice Sliding roll 26 ... Swinging member 27 ... Adjustment screw rod 28 ... Roll gap control motor 29 ... Sliding rice wind selection unit 30 ... Transfer spiral 31 ... Downspout gutter 32 ... Karamin 33 ... Dust cylinder 34 ... Driving motor 35 ... Refining room 36 ... White rice tank 37 ... Bran transfer spiral 38 ... Bran transfer trough 39 ... Bran bag 40 ... Raw material charging possible lamp 41 ... Coin number display lamp 42 ... Coin mech 43a ... "Pull" selection switch 43b ... "Brown rice" selection switch 44, 45, 46 ... Whiteness selection Switch 47 ... tariff 48 ... coin sensor 49 ... control unit (CPU) 50 ... load current detector 55 ... brown tank 57 ... detection hole 58 ... detection plate 59 ... optical sensor

Claims (1)

[Claims] 1. A paddy hopper 20 and a pair of paddy rolls 24, 25 for padding paddy supplied from the paddy hopper 20.
A roll gap adjusting means for opening and closing the roll gap between the hulling rolls 24 and 25; and a roll gap control motor for driving the adjusting screw rod 27 of the roll gap adjusting means in the forward and reverse directions. And a rotation detecting means capable of detecting a rotation state of the adjusting screw bar 27 at a predetermined angle, and a rotation detection and rotation speed of the rotation detection means performed in a non-driven state of the hulling rolls 24 and 25. An initial gap setting means for setting an initial gap of the roll gap by detecting a change;