JPH0312939B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a roll adjustment device for a hulling device.

(Prior art) Japanese Patent Application Laid-Open No. 57-10344 discloses a fixed roll, a movable roll provided at an intermediate position above and below a swinging arm, and a swinging roll provided above the movable roll of the swinging arm. A through hole in the moving direction, a retractable rod whose tip is screwed into the through hole, a limit switch with non-adjustable timing installed in the middle of the retractable rod, a threaded cylinder loosely fitted to the base of the retractable rod, and a screw. A roll adjustment device for a hulling device is described, which includes a forward/reverse motor that rotates a cylinder and a spring provided on an advancing/retracting rod.

(Problems to be Solved by the Invention) The above-mentioned known example was invented for a roll adjustment device for a hulling device similar to the present application, but there is a problem in that the limit switch cannot adjust the timing. . Without timing adjustment, roll gap adjustment will be inaccurate.

However, if the timing adjustment is performed between the advancing/retracting rod and the swinging arm, it can be easily done as follows.

(Object of the Invention) An object of the present invention is to make it possible to adjust the timing of a limit switch using a simple mechanism.

(Means for Solving the Problem) Therefore, the present invention provides a fixed roll 2 and a swinging arm 1.
A moving roll 12 provided at an intermediate position between the upper and lower sides of 0, a through-hole 13 in the swinging direction provided in a lower part of the swinging arm 10 than the moving roll 12, and a retractable rod 14 whose tip is inserted into the through-hole 13; A limit switch 17 provided at the lower end of the swinging arm 10, a threaded portion 18 formed at the base of the retractable rod 14, a threaded tube 20 that is free to rotate only and is screwed into the threaded portion 18, and the threaded tube 20 is rotated. A forward/reverse motor 24, a collar 26 provided on the forward/backward lever 14, a spring 28 provided between the collar 26 and the swinging arm 10, and a moving body fixed to the protrusion 15 beyond the through hole 13 of the forward/backward lever 14. 30, a contact body 38 for turning on and off the limit switch 17 provided on the movable body 30, and a rotary knob 44 for manually adjusting the mounting position of the contact body 38. .

(Example) To explain with the drawings, reference numeral 1 denotes a fixed shaft attached to a case, and a fixed rubber roll 2 is fixed to the shaft 1 so as to freely rotate only.

Reference numeral 3 denotes a paddy rice hopper, and an on-off valve 31 is provided at the upper part of the outlet 4, a rack 32 is formed on the lower surface of the on-off valve 31, and a pinion gear 33 that engages with the rack 32 is rotated by a motor 34. The motor 34 is fixed to the shaft and is configured to be energized by a switch 35.

A feed roll 5 is mounted on a shaft below the on-off valve 31 . 6 is a sensor that detects the presence or absence of unhulled rice falling from the hopper 3;
This switch is turned on and off, and the switch 7 rotates the forward/reverse motor 24. 8 is a control valve for the amount of feed.

The upper end of a swinging arm 10 is pivotally supported on the shaft 9 of the feeding roll 5, and a moving shaft 11 is attached to the lower part of the arm 10. A moving roll 12 is fixed to the moving shaft 11.

A through hole 13 is formed in the lower part of the swinging arm 10 in the swinging direction of the swinging arm 10, and one end of the retractable rod 14 passes through the throughhole 13. The lower part of the swinging arm 10 is bent into an L shape to form a bent part 16, and a limit switch 17 is attached to the tip of the bent part 16.

The reciprocating rod 14 has a threaded portion 18 formed at its base, into which a threaded cylinder 20 which is rotatably attached to the case 19 is screwed. Reference numeral 21 denotes a gear formed in the threaded cylinder 20, and the gear 21 meshes with a gear 25 to which the rotating shaft 23 of the forward/reverse motor 24 is fixed via an intermediate gear 22. Therefore, when the forward/reverse motor 24 is energized, the threaded portion 18 moves back and forth via the rotating shaft 23, gear 25, intermediate gear 22, gear 21, and threaded cylinder 20, and the advancing/retracting rod 14 moves back and forth as the threaded portion 18 moves back and forth. Then, the moving roll 12 is moved closer to or closer to the fixed roll 2.

26 is a collar fixed to the outer periphery of the advancing/retracting rod 14;
A spring 28 is provided between the bent portion 6 and the bent portion 16.
A protruding part 15 at the tip of the retractable rod 14 protrudes from a through hole 13 provided in a bent part 16, and a boss 2 is attached to the protruding part.
7 and secure with screws 29.

A moving body 30 is attached to the boss 27. Mobile object 3
0 extends parallel to the bent portion 16, and a pointer 37 is attached to the tip thereof via a shaft 36. A contact body 38 is attached to one end of the pointer 37, and the operating piece 39 of the limit switch 17 is brought into contact with the contact body 38.

A screw rod 40 is in contact with the other end of the pointer 37, and the screw rod 4
0 rotates forward, the pointer 37 rotates forward and reverse around the shaft 36. A gear 41 is attached to the screw rod 40, and a shaft 43 of a gear 42 that meshes with the gear 41 protrudes outward from the case 19, and a knob 44 is attached to the tip of the shaft 43 of a gear 42 that meshes with the gear 41.
Install. Therefore, the knob 44 is rotated, the gear 42 is rotated to rotate the gear 41, and the screw rod 4 is rotated.
Rotate 0. When the screw rod 40 rotates, the screw rod 40
goes in and out, so even if the screw rod 40 goes in and out, the gear 41
Either one of the gears 42 and 42 is formed for a long time so that they do not come out of mesh.

The limit switch 17 is for stopping the rotation of the forward/reverse rotation motor 24. When the forward/reverse motor 24 rotates forward, the limit switch 1 is turned on.
7 to stop the rotation. When reversing, the timer 45 automatically stops after a predetermined period of time has elapsed.

(Function) Since the present invention is as described above, the switch 3
When the switch 5 is turned on, the motor 34 is rotated, the rack 32 is moved via the pinion gear 33, and the on-off valve 31 is opened.

Therefore, the unhulled rice in the unhulled rice hopper 3 falls and pushes down the sensor 6, which turns on the switch 7. When the switch 7 is turned on, power is applied to the forward/reverse rotation motor 24, so that the forward/reverse rotation motor 24 rotates in the normal direction and passes through the rotating shaft 23, gear 25, intermediate gear 22, gear 21, and screw cylinder 20 to
8 and the advancement/retraction rod 14 are advanced.

Therefore, the lower end of the swinging arm 10 is pressed by the collar 26 fixed to the advancing/retracting rod 14 via the spring 28, so the swinging arm 10 moves forward around the shaft 9 and is attached to the swinging arm 10. The moving roll 12, which is being moved, comes into contact with the fixed roll 2.

However, since the forward/reverse motor 24 is still energized, the screw portion 18 and the advancing/retracting rod 14 continue to move forward, but the movable roll 12 and the fixed roll 2 are colliding with each other, so the swinging arm 10 does not move.
Therefore, only the advancing/retracting rod 14 moves further forward while compressing the spring 28.

Then, the boss 27 fixed to the protrusion 15 at the tip of the forward/backward lever 14 and the movable body 30 fixed to the boss 27 move together with the forward/backward lever 14, so the limit switch 17 attached to the bending section 16 moves. A relative shift occurs between the actuating piece 39 and the pointer 37 and the contact body 38 attached to the movable body 30, and the actuating piece 39 is caused by the contact body 38.
Since the limit switch 17 is turned off by pressing , the forward/reverse rotation motor 24 is stopped.

The off timing of the limit switch 17 is adjusted by the screw rod 40 that moves in and out as a gear 41 meshes with a rotating gear 42 when a knob 44 outside the case 19 is rotated.

When the limit switch 17 is turned off, the forward/reverse rotation motor 24 stops rotating, so the moving roll 1
2 comes into contact with the fixed roll 2 with a constant pressure, so that hulling is performed between the fixed roll 2 and the moving roll 12.

When the unhulled rice in the huller hopper 3 runs out, the sensor 6
Since the roll 1 moves upward, the switch 7 is activated, and the timer 45 causes the moving roll 1 to rotate for the desired time.
2 is pulled away, so the moving roll 12 returns to its original state.

(Effects) Conventionally known Japanese Patent Application Laid-Open No. 10344/1983 discloses a fixed roll, a movable roll provided at an intermediate position above and below the swinging arm, and a swinging roll provided above the movable roll of the swinging arm. A through hole in the direction, a retractable rod whose tip is screwed into the through hole, a limit switch that cannot adjust the timing provided in the middle of the retractable rod, a threaded cylinder loosely fitted to the base of the retractable rod, and a screw cylinder. This document describes a roll adjustment device for a rice husking device that includes a forward/reverse motor that rotates the husks and a spring provided on an advancing/retracting rod.

However, although the above-mentioned known example was invented for a roll adjustment device for a hulling device similar to the present invention, there is a problem in that the limit switch cannot adjust the timing. Without timing adjustment, roll gap adjustment will be inaccurate.

However, the present invention has a fixed roll 2, a movable roll 12 provided at an intermediate position above and below the swinging arm 10,
A through-hole 13 in the swinging direction provided in the lower part of the swinging arm 10 than the moving roll 12, a reciprocating rod 14 whose tip is inserted into the through-hole 13, and a limit switch 17 provided at the lower end of the swinging arm 10. , a threaded portion 18 formed at the base of the advancing/retracting rod 14 , a threaded tube 20 that can only rotate freely and is screwed into the threaded portion 18 , a forward/reverse motor 24 that rotates the screw tube 20 , and a flange 26 provided on the advancing/retracting rod 14 . , a spring 28 provided between the collar 26 and the swinging arm 10, a movable body 30 fixed to the protrusion 15 beyond the through hole 13 of the advance/retreat rod 14, and a limit switch 17 provided on the movable body 30. This is a roll adjustment device for a hulling device, which is composed of a contact body 38 that turns on and off, and a rotary knob 44 that can manually adjust the mounting position of the contact body 38.
By manually adjusting 4, the timing at which the moving body 30 and the limit switch 17 are turned on and off can be finely adjusted.

Further, since the limit switch 17 is provided on the swinging arm 10 and the movable body 30 is provided on the advancing/retracting rod 14, the difficult timing adjustment mechanism can be simplified.

[Brief explanation of the drawing]

Figure 1 is a longitudinal front view of the main part, Figure 2 is a front view of the roll in an open state, Figure 3 is a sectional view of the supply section,
FIG. 4 is a sectional view of the roll in a closed state, and FIG. 5 is a wiring diagram. Explanation of symbols, 1... Fixed shaft, 2... Fixed roll, 3... Hulling hopper, 4... Feeding port, 5...
Loading roll, 6...sensor, 7...switch,
8... Control valve, 9... Shaft, 10... Rocking arm, 11
...Movement axis, 12...Movement roll, 13...Through hole, 14...Advance/retreat rod, 15...Protrusion, 16...
Bend part, 17... Limit switch, 18...
Threaded part, 19... Case, 20... Threaded tube, 21
... Gear, 22 ... Intermediate gear, 23 ... Rotating shaft,
24... Forward/reverse motor, 25... Gear, 26...
...Brim, 27...Boss, 28...Spring, 29...Screw, 30...Moving body, 31...Opening/closing valve, 32...
Rack, 33... Pinion gear, 34... Motor, 35... Switch, 36... Shaft, 37... Pointer, 38... Contact body, 39... Operating piece, 40...
Screw rod, 41...gear, 42...gear, 43...
Axis, 44...knob, 45...timer.

Claims (1)

[Claims] 1 A fixed roll 2, a movable roll 12 provided at an intermediate position above and below the swinging arm 10, a through-hole 13 in the swinging direction provided below the movable roll 12 of the swinging arm 10, and a tip in the through-hole 13. Retractable rod 1 through which is inserted
4, a limit switch 17 provided at the lower end of the swinging arm 10, and a threaded portion 1 formed at the base of the advancing/retracting rod 14.
8, a threaded cylinder 20 that can only rotate freely and is screwed into the threaded part 18, a forward/reverse motor 24 that rotates the threaded cylinder 20, a flange 26 provided on the advancing/retracting rod 14, and a flange 26 between the flange 26 and the swinging arm 10. The spring 28 provided in the
A movable body 30 fixed to the protrusion 15 beyond the through hole 13 of No. 4, a contact body 38 that turns on and off the limit switch 17 provided on the movable body 30, and a rotary knob that can manually adjust the mounting position of the contact body 38. 44
A roll adjustment device for a rice hulling device consisting of.