JPH0622692B2 - Remover Roll gap control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a derolling gap control device for a hulling device, a hulling rice polishing device, and the like.

[Problems to be Solved by Prior Art and Invention]

For example, an unmanned hulled rice polishing device has become popular in recent years, and in this form, a user brings in predetermined rice and inserts a predetermined amount of coins into a coin insertion slot to be incorporated in the device, whereby each part of the rice polishing rice is polished for a certain time. Is automatically started and stopped when the operation is continued for a time commensurate with the amount of money.

By the way, one of the pair of derollers is configured to be movable in the distance with respect to the other roll, and the gap between the two is controlled to secure a set current value while detecting the load current of the drive motor (so-called load). Control), and a configuration capable of automatically ensuring an optimum roll gap state based on the detection result of the removal rate detector (so-called removal rate control).

However, in the mode in which the operating time is determined in advance as described above, it is not preferable to automatically control the entire operating time range due to the relationship between the amount of treated paddy and the operating time set by the input amount. That is, if the raw rice grain to be treated is interrupted in the middle of the operation time, the motor load current is reduced to work to narrow the derolling gap, and finally the two derolling parts come into contact with each other to cause unexpected wear. In the removal rate control as well, since there is no sample grain to detect the removal rate, it is regarded as a low removal state and the removal roll gap is controlled to be narrow, and the removal rolls contact each other.

[Means for Solving the Problems]

The present invention, in an attempt to eliminate the above-mentioned drawbacks, is provided with an operating time setting mechanism that sets the operating time T in advance, and in the removing mechanism that performs the removing process while rotationally driving the operating time pair of removing rolls 24 and 25, A roll gap control means for interlocking the derolling gap l in a wide and narrow manner is provided, and a control execution time setting means for performing this derolling gap control only for a short time t set within the range of the operating time is provided. The operation time is the constitution of the derolling clearance control device provided with a maintaining means for maintaining the derolling clearance set during the execution of this control and continuing the operation.

[Operation and effect of the invention]

When the hulling operation time T is set in advance by inserting a coin or the like in relation to the raw material paddy to be processed, the drive motor 34 is activated and the removal work is started. For example, if the amount of paddy in the paddy tank 20 is equal to or larger than a predetermined value, or if the number of inserted coins, that is, the amount of money is equal to or larger than a predetermined value, load control by detecting the load current of the drive motor 34, or paddy rice / rice for extruded rice is performed. With the removal rate control based on the determination, the removal roll clearance control 1 is controlled to be wide and narrow so as to approach a preset appropriate value for a predetermined short time t.

When the clearance control operation for a short period of time is completed, an appropriate value is maintained during the clearance control operation, and the operation is continued with the derolling clearance fixed for the remaining operation time.

Therefore, even when the supply of the raw paddy is interrupted earlier than the preset operating time, the derolling gap control has already been completed, and unexpected derolling contact due to the control operation does not occur and roll wear does not occur. .

In the form of confirming that the amount of unhulled rice in the unhulled tank is equal to or larger than a predetermined value as the condition for starting the derolling control, lack of unhulled rice in a short time t can be resolved, and a roll contact accident can be further prevented.

Further, when the operation time is set according to the number of coins inserted, when the roll gap control is performed under the condition of a predetermined number or more, it is possible to indirectly predict that the amount of paddy is a predetermined amount or more. Moreover, the lack of paddy within the control short time t can be eliminated.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

Reference numeral 1 is a building in which an unmanned hulled rice polishing facility is installed, and the inside is partitioned by a partition wall 2 into an operation room 3 and a machine room 4. Of these, the operation room 3 side has a raw material paddying section 5, an operation panel 6, a white rice unloading section 7, etc., and the machine room 4 side has a loading hopper 8, a paddy hull elevator 9, a paddy huller 10, a rice mill elevator. 11, a rice polishing machine 12, a bran processing unit 13, and the like.

The raw rice paddy section 5 has a construction in which the raw material stand 15 is located on the operation chamber 3 side and the loading hopper 8 is located on the machine room 4 side before and after the opening 14 of the partition wall 2. At the lower part of 8, there is provided a supply gutter 17 which houses a supply spiral 16, and the axis of the spiral 16 is rotatably linked by a drive motor 18 on one end side. 19 is a sieve screen.

The transfer end side of the supply gutter 17 is looked into the hopper part of the hull lifting machine 9, and the upper part of the hull lifting machine 9 is connected to the paddy tank 20 of the hulling machine 10. At the lower part of the paddy tank 20, a switching shutter 21 is configured to switch between a left tilted posture a and a right tilted posture b around a central horizontal axis 22. In the tilted posture a, the switching shutter 21 is directly connected to the rice milling elevator 11 through the communication port 23. Raw materials can be supplied. In addition, when switching to the tilted posture B, the huller 10
The raw material can be supplied to the derolling rolls 24 and 25 parts. These derolling rolls 24 and 25 rotate at different peripheral speeds, and one of the rolls 24 is movable to and from the other roll 25, and the derolling roll 24 is supported by a swing member 26. The configuration is such that the adjusting screw rod 27 screwed to the tip end side of the moving member 26 is moved forward and backward with respect to the fixed-side roll 25 by the forward and reverse rotation of the control motor 28, and the gap 1 between the adjusting rod 27 and the fixed-side roll 25 can be changed widely. 29 is a wind-selecting unit for performing a wind-selection process on the extruded rice, 30 is a transfer spiral for collecting light rice grains and the like separated from the extruded mixed rice and transferring them to one side, 31 is leaking and removing small rice in the mixed rice While flowing down the gutter, 32 is Kara, 3
3 is a dust cylinder. Derolling rolls 24, 25 and transfer spiral 3
The drive unit such as 0 is rotationally interlocked by the drive motor 34. The end of the transfer spiral 30 on the discharge side is the rice hull elevator 9.
Can communicate with. Further, the mixed rice from the downflow gutter 31 can be communicated with the hopper of the rice-polishing elevator 11 via a transfer unit as appropriate.

The brown rice tank 55 of the rice polishing machine 12 is seen near the tank above the rice polishing elevator 11.

This rice milling machine 12 has a known form in which a whitening roll (not shown) is housed in a whitening chamber 35, and a separating bran from a bran removing screen (not shown) is fed by a bran conveying fan (not shown). It is conveyed to the bran processing unit 13. The outlet side of the whitening chamber 35 leads to a white rice tank 36 as the white rice unloading section 7. The bran processing unit 13 includes a cyclone 36 'and the cyclone 3'.
A bran transfer spiral 37 gutter 38 for horizontally transferring the bran dropped into the lower part of 6 ', and bran bags 39, 39 for receiving the fallen bran from a discharge part opened at an intermediate portion and a terminal side of the spiral gutter 37.

The operation panel 3 side operation panel 6 has, on its panel surface, a raw material ready lamp 40, a coin number display lamp 41, a coin mech 42,
Fir / comb selection buttons 43a / 43b, whiteness selection (in the example shown, white / standard / three-eighth steps can be selected) buttons 44, 45, 46, charge table 47 (for example, "fir 12 kg
200 yen "," 100 yen for 10 kg of rice "...) and the like are provided, and the coin mech 42 is provided with a coin coin identification unit, a coin sensor 48 that operates for each coin inserted, and the like. Further, inside the operation panel 6, there is provided a microcomputer for controlling the drive of each part drive motor.

Operation control unit (CPU) 49 of the microcomputer
The detection information from the coin sensor 48, the whiteness selection information, the fir / comb selection information, the detection signal of the load current detector 50 of the drive motor 34 of the huller 10, the clock signal, and the like are input to the. On the other hand, the output information includes a supply spiral drive motor 18 control signal, a switching shutter 21 control signal, and a huller 1.
0 drive motor 34, elevator 9, 11 drive motor 51, rice mill 12 drive motor 52, bran transfer spiral motor 53, etc. drive system control signal, whiteness adjustment motor 54 control signal, roll gap control motor 28 forward / reverse command There are signals, etc.

The CPU 49 mainly has the following functions. That is, the number of coins (100-yen coins) inserted into the coin mech 42 is read, the operating time is calculated, and a drive signal is output to the supply spiral drive motor 18, the huller 10 drive motor 34, etc. over the calculated time T. The detected load current of the huller drive motor 34 is fetched and compared with a preset standard load current. Based on the result of the comparison, the control motor 28 outputs each signal of the forward rotation output and the reverse rotation output, that is, when the detected load current is larger than the standard load current, control is performed to enlarge the derolling gap l. When the detected load current is smaller than the standard, the motor 28 is rotated in the reverse direction, and conversely, a signal for rotating the control motor 28 in the forward direction to reduce the gap 1 is output (derolling gap control means). The control is performed by receiving a confirmation signal from the coin sensor 48 that the number of coins inserted into the coin mech 42 is equal to or larger than a predetermined number (for example, two coins), and is executed only during a predetermined short time t. Is output (control execution time control means). When the control execution time elapses, a control cutoff signal and a gap fixing maintenance signal are output to maintain the roll gap 1 obtained at the time when the control time t has elapsed. Etc.

The operation of the above example will be described.

When the raw material is paddy, insert enough coins into the insertion slot of the coin mech 42 to secure an operating time commensurate with the amount, then press the "fir" selection button 43a, and finally select the whiteness selection button. Set. After completing these setting preparations, the paddy is fed into the feeding hopper 8.
The operation of each part of the apparatus starts at the same time when the coin is inserted, and the paddy from the input hopper 8 is transferred by the supply spiral 16 and supplied into the paddy lifter 9. The discharged paddy from the elevator 9 is supplied from the paddy tank 20 onto the rolls 24 and 25 of the paddy huller 10 by the switching shutter 21 which is set in the inclined posture B in advance in accordance with the above-mentioned “fir” setting. The raw paddy is detreated by rotation of the derolling rolls 24 and 25, and light rice husks and rice porridge are removed while passing through the lower wind selecting section 29. Is supplied to.

In the rice-polishing machine 12, the unpolished brown rice grains, which are partially supplied, are sequentially fed by rotating a whitening roll (not shown), and the surface bran layer or the rice husk is peeled from the bran screen to obtain white rice. This white rice is appropriately collected in the operation room 3 via the white rice removing section 7.

It is assumed that the driving motors 18 of the supply spiral 16 are stopped first when the time T set by the input amount of money has elapsed in each of the operating parts, and the hulling machine 10, the rice milling machine 12, etc. are stopped after a predetermined time delay.
Grains remaining in the elevators 9 and 11 and the whitening chamber can be reduced.

When the number of inserted coins is 2 or more in the work process by the above-mentioned hulling machine 10, the derolling gap control by the load current is performed for a short time after a certain time has elapsed after the start of the work. That is, the load current of the drive motor 34 is read by the detector 50, compared with a preset standard load current, and when the detected load current is larger than the standard load current, excessive pressure is applied to easily cause damaged rice. The control motor 28 is rotated in the reverse direction to bring the derolling roll 24 closer to the opposing derolling roll 25 side, and conversely, when the detected load current becomes smaller than the standard load current, a predetermined delaminating rate cannot be obtained. The motor 28 is normally rotated to separate the derolling roller 24. By performing such derolling clearance control for a short time t,
During the subsequent operation time, the work is continued while maintaining the load control gap at the time t, and when the operation time T elapses, the work is stopped at the same gap.

Therefore, even if the raw material is cut off before the operation time set according to the number of inserted coins elapses and the idle operation state occurs, the derolling clearance control operation by the load current has already been completed, and the load is unexpectedly low. Less contact with derolling due to detection.

If the number of coins inserted is one, as in the case where a new unprocessed grain remains and a new coin is inserted even after the operation time has been set once and the work is completed, the above-mentioned removal is performed. Roll gap control is not performed, and hulling work is performed according to the previous gap. This is because the interruption of the raw material can be predicted in such an additional operation.

When the raw material is brown rice grain, the "rice" selection button 43
Although the work is started by pressing b, the switching shutter 21 in the paddy tank 20 is switched like an inclined posture a,
The raw material brown rice is directly supplied to the rice polishing machine 12 through the rice polishing elevator 11. Therefore, the surface bran layer is peeled off in the polishing room.

The bran or crushed rice husks discharged through the bran-removing screen are conveyed to the bran treatment section 13 by air and transferred to the bran trough 28 through the cyclone 36 and collected in the bran bags 39 and 39.

In the above embodiment, the so-called derolling gap is controlled by so-called load control. However, the dewetting ratio is calculated while sampling a part of the ejected rice to discriminate between the paddy rice and the rice. It is also possible to adopt a mode in which an appropriate roll gap is obtained while making a comparison. Further, in the above embodiment, the condition for the derolling clearance control is set by the number of inserted coins. However, the paddy hopper 20 is provided with a paddy amount detection sensor, and the paddy amount in the tank 20 is on the condition that the sensor is in the detection state. It may be in the form of control.

[Brief description of drawings]

FIG. 1 shows an embodiment of this explanation. FIG. 1 is an overall plan view, FIG. 2 is a schematic flow chart of the apparatus, FIG. 3 is a front sectional view of a part of a huller, and FIG. A front view of the board and FIG. 5 are control block diagrams. In the figure, 3 is an operation room, 4 is a machine room, 5 is a raw material feeding section, 6 is an operation panel, 7 is a white rice removing section, 10 is a rice huller, 12 is a rice polishing machine, 24 and 25 are derolling rollers, 28 is Control motor, 34
Is a drive motor, 42 is a coin mech, and 43a is "fir tree"
A select button, 43b is a "come" select button, 49 is an arithmetic control unit (CPU), and 50 is a load current detector.

Claims (1)

[Claims] 1. A de-mechanism that is provided with an operating-time setting mechanism that sets an operating time T in advance and de-processes while rotating the pair of de-rolling rolls 24 and 25 while rotating the pair of de-rolling gaps 1. A roll gap control means for interlocking control is provided, and a control execution time setting means for performing the derolling gap control only for a short time t set within the range of the above operation time is provided. A derolling clearance control device provided with a maintaining means for maintaining the derolling clearance set in step 1 and continuing the operation.