JP4863401B2 - Huller - Google Patents

Description

  The present invention relates to a hulling machine in which a second roll supported by a movable shaft can be brought into and out of contact with a first roll supported by a fixed shaft.

  A fixed shaft that is rotationally driven around the axis at a first rotational speed by rotational power from the electric motor, and a movable shaft that can be moved to and away from the fixed shaft in a state substantially parallel to the fixed shaft. And a movable shaft that is rotationally driven at a second rotational speed different from the first rotational speed around an axis by rotational power from the electric motor, a first roll supported by the fixed shaft, and the movable A hulling machine including a second roll supported by a shaft and a pushing mechanism that pushes the movable shaft so that the second roll is pressed against the first roll with a predetermined pressure is widely used. It's being used.

Since the hulling machine performs hulling using a difference in peripheral speed between the first roll and the second roll, the first and second rolls wear with the passage of time of hulling work.
Accordingly, every time a predetermined time elapses, the first roll and / or the second roll is replaced with a new roll, or the first roll supported by the fixed shaft and the movable shaft. Replacing the second roll requires roll maintenance work such as replacing the high-speed rotation side roll and the low-speed rotation side roll that are severely worn.

By the way, the first roll and the second roll are fastened via attachment screws that are screwed in along the axial direction of the axis corresponding to the fixed shaft and the movable shaft, respectively.
Therefore, when loosening and / or tightening the mounting screw to detach the roll from the corresponding shaft, the corresponding shaft rotates together with the roll, and the workability of the maintenance work is impaired. .

A roll detent tool has been proposed as a tool for preventing this co-rotation and facilitating the demounting work of the roll (see Patent Document 1 below), but is separate from the hulling machine. It is a dedicated tool, and handling such as storage is complicated.
JP 2007-313431 A

  The present invention has been made in view of the prior art, and an object of the present invention is to provide a huller with a simple structure capable of preventing the shaft supporting the roll from rotating together when the roll is detached without requiring a dedicated tool. And

  The hulling machine according to the present invention can be contacted and separated from the fixed shaft in a state substantially parallel to the fixed shaft, and a fixed shaft that is rotationally driven around the axis by the rotational power from the electric motor. A movable shaft that can be repositioned at a second rotational speed different from the first rotational speed around the axis by rotational power from the electric motor; and A first roll fixed via a mounting screw threaded in the axial direction of the fixed shaft; a second roll fixed to the movable shaft via a mounting screw threaded in the axial direction of the movable shaft; A push mechanism that pushes the movable shaft so that the second roll is pressed against the first roll at a predetermined pressure, and a work switch that performs ON / OFF switching of the hulling work by the first and second rolls. And the operation signal from the work switch And a control device for driving the electric motor and operating the push mechanism, wherein the control device has a maintenance mode activated based on an external operation, In the maintenance mode, the drive mechanism is operated such that the second roll is pressed against the first roll in a state where the driving of the electric motor is stopped.

According to the hulling machine configured as described above, the first roll that is driven to rotate about the fixed axis and the second roll that is driven to rotate about the movable axis are changed by switching the work switch from the OFF state to the ON state. The two rolls are rotated at different rotational speeds by the rotational power from the electric motor in a state where the two rolls are pressed against the first roll by the pressing mechanism with a predetermined pressure.
The first roll is fixed to the fixed shaft via a mounting screw screwed in the axial direction of the fixed shaft, and the second roll is fixed via an mounting screw screwed in the axial direction of the movable shaft. Are fixed to the movable shaft.
Here, the control device that controls the electric motor and the pushing mechanism activates the maintenance mode based on an external operation. In the maintenance mode, the second roll is pressed against the first roll by the pushing mechanism in a state where the rotational drive of the first and second rolls by the electric motor is stopped.

Thus, by starting the maintenance mode, the rotation of the first and second rolls is stopped and the first and second rolls are in pressure contact with each other. When the first and second rolls are in pressure contact with each other, the first and second rolls are pressed against each other even when the mounting screw screwed in the axial direction of the fixed shaft or the movable shaft is loosened or tightened. It is possible to prevent the fixed shaft or the movable shaft that supports the two rolls from rotating together.
And since the pushing mechanism used at the time of a hulling work is used for fixation of a 1st and 2nd roll, a dedicated tool or a dedicated structure can be made unnecessary.

  Preferably, the control device operates the push mechanism so that the second roll is pressed against the first roll at the predetermined pressure in the maintenance mode.

In this case, the pressure between the first and second rolls does not change during the hulling operation (when the first and second rolls are driven to rotate) and when the maintenance mode is activated.
Therefore, the control structure can be simplified by making the control of the pushing mechanism in the maintenance mode the same as that during the hulling operation.

According to the hulling machine according to the present invention, when the maintenance mode is activated, the rotation of the first and second rolls is stopped and the first and second rolls are brought into pressure contact with each other. Alternatively, when the second roll is exchanged, the first and second rolls are in pressure contact with each other even if the mounting screw screwed in the axial direction of the fixed shaft or the movable shaft is loosened or tightened. Thus, it is possible to prevent the fixed shaft or the movable shaft that supports the first or second roll from rotating together.
And since the pushing mechanism used at the time of a hulling work is used for fixation of a 1st and 2nd roll, a dedicated tool or a dedicated structure can be made unnecessary.

Hereinafter, preferred embodiments of a hulling machine according to the present invention will be described with reference to the accompanying drawings.
1 and 2 are front views of the huller according to an embodiment of the present invention, and FIGS. 3 and 4 are rear views of the huller of FIGS. 1 and 2. 1 and 3 show the state before the second roll movement (before the roll wear), and FIGS. 2 and 4 show the state after the second roll movement (after the roll wear). FIG. 5 is a configuration block diagram of a control system of the hulling machine in the present embodiment, and FIG. 6 is a diagram showing a roll driving mechanism of the hulling machine in the present embodiment.

As shown in FIGS. 1 to 4, the huller 1 according to the present embodiment includes a machine casing 2 having an upper and lower opening, an upper machine casing 3 provided in the upper opening 2 a, and the upper machine casing. 3 and a raw material tank 4 for storing grains.
As shown in FIG. 1 and FIG. 2, the upper machine casing 3 is provided inside the upper machine casing 3 and at the lower end opening of the raw material tank 4, and introduces grains into the hulling portion 20 in the machine casing 2. A supply port 31, a supply shutter 32 provided in the supply port 31, an opening / closing drive unit 33 provided outside the upper machine casing 3 to drive the supply shutter 32 to open and close, and the upper machine casing 3, a guide plate 34 that aligns the grains introduced from the supply port 31, and a direction along the inclination of the guide plate 34 inside the upper machine casing 3 and below the guide plate 34. An impeller-like lead roller 35 that is rotatably supported and that quantitatively introduces grains sequentially into the hulling portion 20, and an upper end in a state where the guide plate 34 is opposed to the guide roller 34 in a funnel shape. Turns around the upstream pivot shaft 37 It is supported by the ability, and adjustable upstream supply plate 36 the gap between the lead roller 35 is provided by rotating to the upstream pivot shaft 37 around, and functions as a supply unit 30. The lead roller 35 is configured to be able to adjust the amount of raw material waste fed from the upstream supply plate 36 to a supply plate 27 described later in cooperation with the upstream supply plate 36.

  In the present embodiment, an electric motor is used as the opening / closing drive unit 33, the shaft extending from the opening / closing drive unit 33 is rotated around the motor axis, and the supply shutter 31 is rotated, thereby supplying the supply port 31. Is opened and closed.

Further, as shown in FIGS. 1 to 5, the machine frame 2 includes a fixed shaft 21 that is rotationally driven at a first rotational speed around an axis by rotational power from an electric motor 6 that is a drive source, and the fixed shaft. 21 is a movable shaft 23 that can be moved to and away from the fixed shaft 21 in a state of being substantially parallel to the fixed shaft 21, and is the first rotational speed around the axis by the rotational power from the electric motor 6. A movable shaft 23 that is rotationally driven at a different second rotational speed, a first roll 22 that is fixed to the fixed shaft 21 via an attachment screw 55 that is screwed in the axial direction of the fixed shaft 21, and the movable shaft The second roll 24 is fixed to the second roll 24 with an attachment screw 55 screwed in the axial direction of the movable shaft, and the second roll 24 is pressed against the first roll 22 with a predetermined pressure. A pushing mechanism 25 for pushing the shaft 23 and the fixed shaft; 1 and the pivot shaft 26 arranged in parallel with the two shafts above the movable shaft 23 and the raw material sent from the top toward the contact portion A1 of the first roll 22 and the second roll 24. A supply plate 27 supported by the pivot shaft 26 so as not to rotate relative to the pivot shaft 26 is provided so as to be dropped. The supply plate 27 is supported by the pivot shaft 26 so as not to be relatively rotatable so that the inclination direction is opposite to the inclination direction of the upstream supply plate 36.
Further, as shown in FIG. 5, the hulling machine 1 includes a work switch 71 that performs ON / OFF switching of the hulling work by the first roll 22 and the second roll 24, and an operation signal from the work switch 71. And a control device 70 for driving the electric motor 6 and operating the push mechanism 25.
The control device 70 includes a calculation unit and a storage unit (both not shown), and is configured to control the hulling machine 1 based on a program stored in the storage unit. It is realized by a microcomputer mounted on an electric circuit in the sliding machine 1 or an external computer electrically connected to the hulling machine 1.

As shown in FIG. 6, the first roll 22 and the second roll 24 are connected via a driving belt in which the driving force of the electric motor 6 provided outside the machine frame 2 is wound around the electric motor 6. By being transmitted, they are rotationally driven in opposite directions and at different rotational speeds.
That is, belt pulleys 611, 211, and 231 are fixed to the output shaft 61, the fixed shaft 21, and the movable shaft 23 of the electric motor 6 so as not to be relatively rotatable, and the belt pulley 611 and the belt pulley 211 The drive belts 621 and 623 are wound around the belt pulley 211 and the belt pulley 231. In the present embodiment, in the belt pulley 211, the diameter of the pulley around which the driving belt 621 is wound is different from the diameter of the pulley around which the driving belt 623 is wound, so that the fixed shaft 21 and the pulley The rotational speed of the movable shaft 23 is different.
Note that the lead roller 35 is also rotated in the direction in which the grain is introduced into the hulling portion 20 by the driving force from the same electric motor 6 via the driving belt.

  In the present embodiment, the hulling machine 1 has a tension roller 612 that applies / releases tension to the drive belt 621, and the control device 70 responds to the operation of the work switch 71 with the tension roller 612. A roller 612 is configured to transmit / block the driving force of the electric motor 6 to the first roll 22 and the second roll 24 by applying / releasing tension to the driving belt 621.

In the present embodiment, as shown in FIG. 3, the huller 1 includes a fixed shaft support member 51 that supports the fixed shaft 21 so as to be rotatable around an axis via a bearing, and the fixed shaft support member 51. Is fixed to the machine casing 2.
In FIG. 7, the internal perspective view of the roll vicinity in the hulling machine of this embodiment is shown.
As shown in FIGS. 3 and 7, the hulling machine 1 includes a movable shaft support member 53 that supports the movable shaft 23 so as to be rotatable about an axis via a bearing, and the movable shaft support member 53 includes: A base end portion 53a supported so as to be rotatable about a rotation shaft 52 disposed in parallel with the movable shaft 23, and radially outward from the base end portion 53a with respect to the axis of the rotation shaft 52. An extending arm portion 53b; a bearing portion 53c provided on the arm portion 53b so as to rotatably support the movable shaft 23 about an axis; and a connecting portion 53d operatively connected to the pushing mechanism 25. Yes. That is, when the bearing portion 53 c rotates around the rotation shaft 52, the second roll 24 also rotates around the rotation shaft 52.
The first roll 22 and the second roll 24 are fixed to the fixed shaft support member 51 and the movable shaft support member 53 by a plurality of mounting screws 54, respectively.

In the present embodiment, the pushing mechanism 25 is configured such that one end is connected to the machine casing 2 and the other end is connected to the connecting portion 53d and the second roll 24 is brought close to the first roll 22. Thus, both rolls 22 and 24 are pressed against each other. Here, one end of the pushing mechanism 25 is fixed to the side surface of the machine casing 2 on the second roll 24 side.
In the present embodiment, an air cylinder is used as the push mechanism 25, but the invention is not limited to this. For example, an electric pressure by an electric motor may be used.
The base end portion 53a and the connecting portion 53d are arranged on the opposite sides in the radial direction with respect to the movable shaft 23. Accordingly, the second roll 24 is supported from both sides with the movable shaft 23 interposed therebetween, and the rigidity can be increased.

  The supply plate 27 has a base end substantially parallel to the fixed shaft 21 and the movable shaft 23 above the first roll 22 and the second roll 24, more specifically, above the fixed shaft 21. It is supported by the pivot shaft 26 so as not to be relatively rotatable, and is configured such that the raw material basket slides down on the surface of the supply plate 27 on the second roll 24 side.

In the present embodiment, the huller 1 includes a fulcrum shaft 41 disposed above the fixed shaft 21 and the movable shaft 23 in parallel with the two shafts, and a lower end side of the fixed shaft 21 and the movable shaft 23. A link arm 42 supported by the fulcrum shaft 41 so as not to rotate relative to the fulcrum shaft 41 in a state of being interposed therebetween, and the link arm in conjunction with a movement in which the movable shaft support member 53 contacts and separates from the fixed shaft 21. The link arm 42 is operatively operated so that the lower end side of the link arm 42 is pressed toward the side of the movable shaft support member 53 facing the fixed shaft 21 so that the pivot 42 pivots around the fulcrum shaft 41. The fulcrum shaft 41 and the pivot shaft 2 are arranged so that the pivot shaft 26 rotates about the axis in response to the biasing member 43 for biasing and the rotation of the fulcrum shaft 41 about the axis by the link arm 42. And a link mechanism 44 that operates connecting.
In the hulling machine 1, the inclination angle of the supply plate 27 is such that the movable shaft support member 53 is moved through the link arm 42, the fulcrum shaft 41, the link mechanism 44, and the pivot shaft 26. It is configured to change following the movement toward and away from the fixed shaft 21.

In the present embodiment, the link mechanism 44 includes a first link 441 that is supported so as not to rotate relative to the fulcrum shaft 41, a second link 442 that is supported so as not to rotate relative to the pivot shaft 26, and one end portion. The intermediate link 443 is connected to the free end side of the first link 441 so as to be relatively rotatable, and the other end portion is connected to the free end side of the second link 442 so as to be relatively rotatable.
The bearing portion 53 c has a substantially arc-shaped outer peripheral surface centered on the axis of the movable shaft 23, and the lower end side of the link arm 42 is an outer peripheral surface of the bearing portion 53 c by the biasing member 43. It is comprised so that it may be pressed by the side facing the said fixed axis | shaft 21 among these.

Here, the flow of the hulling work in the hulling machine 1 having the above configuration will be described.
First, by operating the work switch 71 from the OFF state to the ON state, the control device 70 operates the electric motor 6 to rotate the first roll 22, the second roll 24, and the lead roller 35. At the same time, the open / close drive unit 33 is driven to open the supply shutter 32, thereby dropping the raw material cake stored in the raw material tank 4 into the supply unit 30. The dropped raw material soot slides down the flow path formed by the guide plate 34 and the upstream supply plate 36 located below, and is supplied to the lead roller 35.
According to the size of the gap between the lead roller 35 and the upstream supply plate 36, the raw material rice cake supplied to the lead roller 35 is sequentially turned into a uniform layer state according to the size of the gap between the lead roller 35 and the upstream supply plate 36. It supplies to the inner hulling part 20.

In the huller 1 having the above-described configuration, when the work switch 71 is operated to the ON state, the control device 70 further operates the push mechanism 25 to move the second roll 24 to the rotation shaft 52. It rotates around and moves in the direction approaching the first roll 22.
In the present embodiment, the movable shaft support member 53 rotates around the rotation shaft 52 of the proximal end portion 53a in accordance with the push mechanism 25 that is operatively connected to the connecting portion 53d, whereby the proximal end portion 53a. The movable shaft 23 supported by the bearing portion 53c provided on the arm portion 53b extending outward in the radial direction with respect to the axis line of the rotating shaft 52 moves in the direction approaching the fixed shaft 21. To do.
Thus, a contact portion A1 is formed between the first roll 22 and the second roll 24, where the first roll 22 and the second roll are pressed against each other with a predetermined pressure.

  The raw material supplied from the supply unit 30 slides down the surface of the supply plate 27 (the surface on the second roll 24 side), and the first roll 22 and the second roll to which the front end of the supply plate 27 is directed. It is supplied to the contact portion A1 between the rolls 24. The first roll 22 driven to rotate about the fixed shaft 21 and the second roll 24 driven to rotate about the movable shaft 23 are fixed so that the second roll 24 can rotate the movable shaft 23 about the axis. It is different depending on the rotational power from the electric motor 6 while being pressed against the first roll 22 with a predetermined pressure by the pushing mechanism 25 via the movable shaft support member 53 supported so as to be detachable from the shaft 21. Since it rotates at a rotational speed, the raw material rice cake supplied to the contact portion A1 by the supply plate 27 is subjected to a hulling process and discharged from the lower opening 2b. In the lower opening 2b, a wind sorting device or the like (not shown) is arranged, and the crushed grain and rice husk are sorted.

  Here, from the state of FIG. 1 and FIG. 3, the diameter of the first roll 22 and / or the second roll 24 is worn away and becomes smaller (in FIG. 2 and FIG. 4, the first roll in FIG. 1 and FIG. 3). 22 and the second roll 24 are indicated by broken lines), and the urging force of the pushing mechanism 25 causes the second roll 24 to rotate about the rotation shaft 52 and move in the direction approaching the first roll 22 (see FIG. 2 and FIG. 4), the pressure contact state (contact portion A1) is maintained.

At this time, the supply plate 27 is operatively connected to a fulcrum shaft 41 disposed above the fixed shaft 21 and the movable shaft 23 in parallel with the two shafts via the pivot shaft 26 and the link mechanism 44. Since the link arm 42 is supported on the fulcrum shaft 41 in such a manner that the lower end side is inserted between the fixed shaft and the movable shaft so as not to be relatively rotatable, the lower end side of the link arm 42 is the urging member. 43 is pressed to the side of the movable shaft support member 53 that faces the fixed shaft 21.
In the present embodiment, the outer peripheral surface of the bearing portion 53 c of the movable shaft support member 53 has a substantially arc shape centered on the axis of the movable shaft 23, and faces the fixed shaft 21 in the outer peripheral surface. The lower end side of the link arm 42 is pressed to the side by the urging force of the urging member 43. That is, the link arm 42 is in point contact with the outer peripheral surface of the bearing portion 53c having a substantially arc shape.

Therefore, when the movable shaft 23 is moved toward the fixed shaft 21 by the pushing mechanism 25, the link arm 42 is biased by the biasing member 43 as the movable shaft support member 53 moves. The fulcrum shaft 41 is swung around the fulcrum shaft 41 and the fulcrum shaft 41 is rotated by the rocking of the link arm 42, whereby the inclination angle of the supply plate 27 is changed via the link mechanism 44.
That is, in response to the swing of the link arm 42 about the fulcrum shaft 41, the first link 441 of the link mechanism 44 supported by the fulcrum shaft 41 so as not to rotate relative to the fulcrum rotates about the fulcrum shaft 41. By rotating the second link 442 supported by the pivot shaft 26 so as not to rotate relative to the pivot shaft 26 via the intermediate link 443 coupled to the free end of the first link 441 so as to be relatively rotatable, The supply plate 27 swings around the pivot shaft 26 and the inclination angle changes.

As described above, the second roll 24 is pressed toward the first roll 22, so that the link arm 42 and the supply that move according to the movement of the second roll 24 while always having an optimal and constant contact portion are supplied. When the plate 27 is operatively connected with the link mechanism 44, the supply plate 27 rotates and automatically adjusts so that the tip of the supply plate 27 faces the contact portion A1 in accordance with the movement of the second roll 24. Is possible.
Thereby, even if the position of the contact portion A1 between the two rolls changes according to the wear of the first roll 22 and / or the second roll 24, the posture of the supply plate 27 is changed to the position change of the contact portion A1. It can be made to follow reliably. Therefore, the automatic adjustment of the supply plate 27 accompanying the movement of the second roll 24 can be stably performed with a simpler configuration without providing a separate sensor for detecting the roll diameter and a control device operated based on the sensor. The hulling efficiency by the first roll 22 and the second roll 24 can be maintained well.

Further, the outer peripheral surface of the bearing portion 53c of the movable shaft support member 53 is formed in a substantially arc shape centering on the axis of the movable shaft 23, and the link arm 42 is disposed on the side of the outer peripheral surface facing the fixed shaft 21. By pressing the lower end side with the urging force of the urging member 43, the movable shaft support member 53 that rotates about the rotation shaft 52 according to the wear of the first roll 22 and / or the second roll 24. The movement can be smoothly and accurately transmitted to the fulcrum shaft 41 via the link arm 42. Thereby, the attitude | position of the said supply board 27 can be made to follow the position change of the contact part A1 of both rolls produced according to abrasion of the said 1st roll 22 and / or the said 2nd roll 24 stably.
Further, the first link 441 and the second link 442 supported by the fulcrum shaft 41 and the pivot shaft 26 so as not to rotate relative to each other are connected by an intermediate link 443, whereby the fulcrum shaft 41 and the pivot shaft 26 are connected. Therefore, the design freedom of the link arm 42 and the supply plate 27 can be improved, and the operation of the supply plate 27 accompanying the movement of the movable shaft 23 can be performed more smoothly. it can.

In the present embodiment, the intermediate link 443 can be adjusted in length in the longitudinal direction.
For example, the intermediate link 443 is configured such that one end and the other end are formed of different members, and the one end and the other end are provided at both ends along the longitudinal direction. The structure joined through the adjustment member which has the thread part screwed in each of these can be employ | adopted.

In this case, the swing angle of the supply plate 27 with respect to the swing angle of the link arm 42 can be adjusted by adjusting the length of the intermediate link 443 in the longitudinal direction.
Therefore, even after the link mechanism 44 is assembled, the position of the supply plate 27 can be adjusted with higher accuracy by finely adjusting the length of the intermediate link 443 in the longitudinal direction.

In the present embodiment, the huller 1 is configured such that the gap between the upstream supply plate 36 and the lead roller 35 can be adjusted electrically.
FIG. 8 is a perspective view of the vicinity of the tilt angle adjusting mechanism of the upstream supply plate in the hulling machine of the present embodiment.
As shown in FIGS. 5 and 8, the huller 1 includes an electric motor (an adjustment motor 8) that has an output shaft 81 that extends in a direction orthogonal to the upstream pivot shaft 37 and is driven to rotate about an axis. And a drive side member 82 having a screwed hole 82a into which a screw 81a provided on the outer peripheral surface of the output shaft 81 is screwed, and extending in parallel with the upstream pivot shaft 37. And a driven side member 83 provided with an opening 83a in which the base end side is supported on the upstream pivot shaft 37 so as not to be relatively rotatable and the driving side member 82 is engaged on the free end side, and can be manually operated. The control device 70 is configured to drive and control the adjusting motor 8 to operate by an amount corresponding to an operation signal from the tilt angle operating member 72.
The opening 83 a of the driven side member 83 has a shape that prevents the drive side member 82 from rotating around the axis of the output shaft 81 when the electric motor 8 is driven. More specifically, the opening 83 a has an elongated hole shape along the radial direction of the upstream pivot shaft 37.
The upstream supply plate 36 is biased in a direction approaching the lead roller 35 by a biasing member 38 attached to the driven member 83.

In this case, by manually operating the tilt angle operation member 72, the control device 70 operates the adjustment motor 8 by an amount corresponding to the operation signal from the tilt angle operation member 72. When the adjusting motor 8 is driven to rotate the output shaft 81 extending in the direction orthogonal to the upstream pivot shaft 37 around the axis, a screw 81a provided on the outer peripheral surface of the output shaft 81 is moved to the upstream pivot. The drive side member 82 tries to rotate around the axis of the output shaft 81 by being screwed into the screwed hole 82 a of the drive side member extending parallel to the support shaft 37. However, the drive side member 82 is engaged with the opening 83a of the driven side member 83 whose base end portion is supported by the upstream side pivot shaft 37 so as not to be relatively rotatable, and the opening 83a of the driven side member 83 is engaged. Has a shape that prevents the drive-side member 82 from rotating about the axis of the output shaft 81, the drive-side member 82 is driven by the adjustment motor 8 to drive the output shaft 81. It moves forward and backward along the axial direction.
When the drive side member 82 moves back and forth along the axial direction of the output shaft 81, the driven side member 83 is urged by the elongated hole shape of the opening 83a abutted against the drive side member 82. It swings around the upstream pivot shaft 37 against the biasing force of the member 38.

As described above, the drive side member 82 moves back and forth in the axial direction of the output shaft 81 in accordance with the drive of the adjustment motor 8, so that the driven side member 83 rotates around the upstream pivot shaft 37. Turn to. In this way, the inclination angle of the upstream supply plate 36 changes.
Therefore, the inclination angle of the upstream supply plate 36 can be accurately controlled by the operation control of the adjustment motor 8. In other words, the distance between the upstream supply plate 36 and the lead roller 35 can be accurately adjusted according to the amount of raw material sent from the raw material tank 4 to the upstream supply plate 36. The raw material soot can be supplied from the upstream supply plate 36 to the supply plate 27 in a fixed layer state.

  In this embodiment, it further includes a rotary encoder 84 that detects the rotation angle of the output shaft 81, and the control device 70 controls the operation of the adjustment motor 8 based on the detection amount of the rotary encoder 84. Yes. In place of the rotary encoder 84, the control device 70 stores rotation speed data (relationship between the operation time and the rotation angle) of the adjustment motor 8 in advance, and drives the rotation for a predetermined time, thereby tilting the angle. The adjustment motor 8 may be operated by an amount corresponding to the operation signal from the operation member 71.

In FIG. 9, the schematic block diagram of the hulling system to which the hulling machine in this embodiment was applied is shown.
In the present embodiment, as shown in FIG. 9, the hulling machine 1 constitutes a hulling system together with a subsequent sorter (swinging sorter) 10, and the hulling machine 1 performs hulling work and wind. The result of the sorting operation is configured to continuously perform the sorting operation in the sorting machine 10. More specifically, a sorter charging elevator 13 for interposing the resultant product is interposed between the lower opening 1b of the huller 1 and the upper opening 10a of the tank of the sorter 10.

  In the hulling machine 1 of the present embodiment, the control device 70 includes a manual mode for controlling the adjustment motor 8 based on an operation signal from the tilt angle operation member 72 and an automatic mode for automatically controlling the adjustment motor 8. In the automatic mode, the control device 70 is based on the signals from the upper limit sensor 11 and the lower limit sensor 12 of the tank 14 in the sorter 10 following the hulling machine 1, and the upstream supply plate 36. The adjustment motor 8 is controlled so as to increase or decrease the gap between the lead rollers 35 by a predetermined amount.

In this case, by manually operating the tilt angle operation member 72, the control device 70 activates the manual mode and controls the adjustment motor 8 based on the operation signal from the tilt angle operation member 72.
Further, based on the signals from the upper limit sensor 11 and the lower limit sensor 12 provided in the tank 14 of the sorter 10 subsequent to the huller 1, the control device 70 activates the automatic mode and the upstream supply plate 36. The adjustment motor 8 is controlled so as to increase or decrease the gap between the lead rollers 35 by a predetermined amount.
More specifically, for example, when only the lower limit sensor 12 detects the accumulation of cereal, it is set as a normal supply amount, and when both the upper limit sensor 11 and the lower limit sensor 12 detect the accumulation of cereal, When the upper limit sensor 11 and the lower limit sensor 12 no longer detect grain accumulation, the supply amount is increased from the normal supply amount. Take control.
Thus, by feeding back the supply status to the process following the hulling machine 1, the flow of the raw material hull in the whole hulling system including the hulling machine 1 can be improved, and the efficiency of the hulling work can be improved. .

In the present embodiment, the control device 70 has a maintenance mode that is activated based on an external operation, and the control device 70 stops the driving of the electric motor 6 in the maintenance mode. The pushing mechanism 25 is operated so that the roll 24 is pressed against the first roll 22.
In the present embodiment, as shown in FIG. 5, a maintenance switch 73 for starting the maintenance mode is provided. The maintenance switch 73 is provided, for example, outside the machine casing 2.
FIG. 10 shows a control flowchart of the maintenance mode in the present embodiment.

As described above, according to the hulling machine 1 configured as described above, the first roll 22 is fixed to the fixed shaft 21 via the mounting screw 54 screwed in the axial direction of the fixed shaft 21, and The two rolls 24 are fixed to the movable shaft 23 via mounting screws 54 that are screwed in the axial direction of the movable shaft 23.
Then, by switching the work switch 71 from the OFF state to the ON state, the control device 70 operates the electric motor 6 to rotationally drive the fixed shaft 21 and the movable shaft 23, as well as the first roll 22 and the first roll. A hulling operation mode for controlling the operation of the pushing mechanism 25 so that the pressure between the two rolls 24 becomes a predetermined value is executed.
As a result, the first roll 22 rotated around the fixed shaft 22 and the second roll 24 rotated around the movable shaft 23 are moved from the second roll 24 to the first roll 22 by the pushing mechanism 25. In a state where it is pressed at a predetermined pressure, it rotates at different rotational speeds depending on the rotational power from the electric motor 6.

  Here, as shown in FIG. 10, when the maintenance switch 73 is operated (Yes in Step S <b> 1), the control device 70 is in a state where the first roll 22 and the second roll 24 are in a rotation drive stopped state. Only in (Yes in step S2), the maintenance mode is activated (step S3). In the maintenance mode, the second roll 24 is pressed against the first roll 22 by the pushing mechanism 25 in a state where the rotational drive of the first roll 22 and the second roll 24 by the electric motor 6 is stopped. After the replacement work of the first roll 22 and / or the second roll 24 is completed, the maintenance switch 73 is operated again (Yes in step S4), so that the first mechanism 22 between the first roll 22 and the second roll 24 by the push mechanism 25 is obtained. The pressing is released (step S5).

Thus, by starting the maintenance mode, the rotation of the first roll 22 and the second roll 24 is stopped and the first roll 22 and the second roll 24 are brought into pressure contact with each other, so that the first roll Even when the mounting screw 54 screwed in the axial direction of the fixed shaft 21 or the movable shaft 23 is loosened or tightened when the replacement work of the 22 or the second roll 24 is performed, the first roll 22 and the second roll Since the 24 is in pressure contact with each other, it is possible to prevent the fixed shaft 21 or the movable shaft 23 that supports the first roll 22 or the second roll 24 from rotating together.
Moreover, since the pushing mechanism 25 used during the hulling operation is used to fix the first roll 22 and the second roll 24, a dedicated tool or a dedicated structure can be dispensed with.

  In the present embodiment, in the maintenance mode, the control device 70 controls the push mechanism 25 so that the second roll 24 is pressed against the first roll 22 at the same pressure as the predetermined pressure during the hulling operation. Operate.

That is, the pressure between the first roll 22 and the second roll 24 does not change during the hulling operation (that is, when the first roll 22 and the second roll 24 are driven to rotate) and when the maintenance mode is activated.
In particular, in a configuration using an air cylinder such as the pushing mechanism 25 of the present embodiment, the second roll 24 is at the same pressure as the set pressure during the hulling operation with respect to the first roll 22 in the maintenance mode. It can be configured to be pressed.
Therefore, the control structure can be simplified by making the control of the push mechanism 25 in the maintenance mode the same as that during the hulling operation.

  In the configuration using an electric motor as the pushing mechanism 25, the pressure between the first roll 22 and the second roll 24 is controlled by current value control. At this time, for example, the current value when the gap between the first roll 22 and the second roll 24 becomes 0 can be adopted as the set current value in the maintenance mode.

Further, as described above, the control device 70 does not shift to the maintenance mode when the first roll 22 and the second roll 24 are rotationally driven. That is, during the hulling operation, the control device 70 does not activate the maintenance mode even if the maintenance switch 73 is operated.
Accordingly, even if the maintenance switch 73 is erroneously operated during the hulling operation, the rotation drive of the first roll 22 and the second roll 24 is not stopped, and thus it is possible to prevent a hulling failure due to an erroneous operation. Can do.
Alternatively, the maintenance switch 73 may be configured to be inoperable by a regulating member or the like during the hulling operation.

When the first roll 22 and the second roll 24 are rotationally driven during the operation of the maintenance switch 73 (No in step S2), it is preferable to report an error by sound or a lamp (step S6). .
In addition to the above control mode, it is preferable not to shift to the hulling operation mode when the maintenance mode is executed. In this case, in the maintenance mode, even if the work switch 71 is operated to the ON state, the control device 70 does not start the hulling work mode.

As mentioned above, although embodiment which concerns on this invention was described, this invention is not limited to the said embodiment, A various improvement, change, and correction are possible within the range which does not deviate from the meaning.
For example, in the present embodiment, the adjustment of the inclination angle of the upstream supply plate 36 is performed using the adjustment motor 8, but is not limited to this, and instead of or in addition to this, the upstream supply plate It is also possible to adopt a configuration in which a screw member that can be advanced and retracted toward the back surface of 36 is provided, and the inclination angle of the upstream supply plate 36 can be manually adjusted by moving the screw member forward and backward.

It is a front view before the 2nd roll movement of the hulling machine in one Embodiment of this invention. It is a front view after the 2nd roll movement of the hulling machine in one Embodiment of this invention. It is a rear view before the 2nd roll movement of the hulling machine of FIG. It is a rear view after the 2nd roll movement of the hulling machine of FIG. It is a block diagram of the control system of the hulling machine in the present embodiment. It is a figure which shows the roll drive mechanism of the hulling machine in this embodiment. It is an internal perspective view of the roll vicinity in the hulling machine of this embodiment. It is a perspective view of the inclination angle adjustment mechanism vicinity of the upstream supply plate in the hulling machine of this embodiment. It is a schematic block diagram of the hulling system to which the hulling machine in this embodiment was applied. It is a control flowchart of the maintenance mode in this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Peeler 6 Electric motor 21 Fixed shaft 22 1st roll 23 Movable shaft 24 2nd roll 25 Pushing mechanism 70 Control apparatus 71 Work switch

Claims (2)

A fixed shaft that is rotationally driven around the axis at a first rotational speed by rotational power from the electric motor, and a movable shaft that can be moved to and away from the fixed shaft in a state substantially parallel to the fixed shaft. And a movable shaft that is rotationally driven around the axis at a second rotational speed different from the first rotational speed by rotational power from the electric motor, and is screwed into the fixed shaft in the axial direction of the fixed shaft. A first roll fixed via a mounting screw, a second roll fixed via a mounting screw screwed into the movable shaft in the axial direction of the movable shaft, and the second roll A push mechanism that pushes the movable shaft so as to be pressed against the roll at a predetermined pressure; a work switch that performs ON / OFF switching of the hulling work by the first and second rolls; and an operation signal from the work switch The electric motor based on A hulling machine provided with a control device which causes and actuating the pressing mechanism movement,
The control device has a maintenance mode activated based on an external operation,
The control device operates the pushing mechanism so that the second roll is pressed against the first roll in a state where the driving of the electric motor is stopped in the maintenance mode. Machine.   2. The huller according to claim 1, wherein the control device operates the pushing mechanism so that the second roll is pressed against the first roll at the predetermined pressure in the maintenance mode. .

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