JP3068907B2 - Supply shutter of soil supply device for nursery box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supply shutter for a soil supply device for a nursery box.

[0002]

2. Description of the Related Art Conventionally, a soil feeding apparatus for a seedling box, comprising an upper feed hopper, a feed belt provided below the feed hopper, and a feed shutter provided at a feed port between the feed belt and the feed hopper. In the above, the supply shutter has a rotation center shaft having a square shaft portion supported on the left and right side walls of the supply hopper, an on-off valve fitted to the square shaft portion with a square shaft, and a manual rotation fixed to the rotation center shaft. A supply shutter for a seedling box soil supply device including a lever is known.

[0003]

The above-mentioned known apparatus has a problem that the backlash remains in the engagement between the square shaft and the on-off valve. That is,
The opening and closing valve is formed with a square hole to be fitted into the square shaft part by press punching, etc., but it is possible to process the square hole into a size that can be in close contact with the square shaft part by precision press. Since the cost is high, the processing is performed to the extent that some backlash is left.

[0004]

An object of the present invention is to enable the on-off valve to be fixed to the square shaft portion without play even if the square hole of the on-off valve is formed without performing high-precision pressing.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides an upper supply hopper 2, a supply belt 4 provided below the supply hopper 2, the supply hopper 2 and the supply belt 4.
And a supply shutter 6 attached to the supply port 5, the left and right side walls 28, 29 of the supply hopper 2 are provided with an intermediate portion as a square shaft portion 10. Pivot shaft 9 with manual rotation lever 37 fixed to its part
Are formed in the left and right side plates 14 and 15 of the opening / closing valve 13 of the supply shutter 6 and slightly larger than the square shaft portion 10. The square shaft portion 10 is loosely inserted and rotated with respect to the square shaft portion 10 until there is no looseness in any one direction. The square shaft portion 10 has a corner having substantially the same size as the square holes 16 and 17. The square hole 22 of at least one auxiliary plate 20 in which the hole 22 is formed is provided so as to be inserted through the square shaft portion 10, and the auxiliary plate 20
The seedling raising box soil in which the rotating portion of the auxiliary plate 20 is fixed to one of the left and right side plates 14 and 15 by a screw 26 after rotating with respect to the square shaft portion 10 until there is no looseness in any other direction. This is a configuration of a supply shutter of the supply device.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a seedling box soil supply device, which is provided above a transfer table 7 having transfer rollers for transferring a known seedling box,
A supply hopper 2 is provided at an upper portion, and a supply belt 4 wound around a pair of rollers 3 provided at a predetermined interval in a transfer direction of the seedling raising box is provided at a lower position of the supply hopper 2. A supply port 5 is formed between the supply hopper 2 and the feeding belt 4, and a supply shutter 6 for adjusting a supply amount is provided in the supply port 5. Reference numeral 8 denotes a space formed between the transfer table 7 and the feeding belt 4.

FIG. 2 is an exploded perspective view of the supply shutter 6, wherein 9 is a pivot shaft composed of a central square shaft portion 10 and left and right round bar portions 11, 12 on both sides thereof, and 13 is an on-off valve. ,
Right and left side walls 14 bent at right angles on both sides of the on-off valve 13,
15 are formed. The left and right side walls 14 and 15 have the pivot shaft 9 thereon.
Square holes 16 and 17 through which the square shaft portions 10 are inserted. The square holes 16 and 17 are punched out to be larger than the diameter of the square shaft portion 10, and the square shaft portion 10 and the square holes 16 and 17 have a relationship of a size that fits with play but does not rotate. To form a square shaft fitting. Reference numerals 18 and 19 are screw holes.

Reference numerals 20 and 21 denote a pair of left and right auxiliary plates which, like the left and right side walls 14 and 15, form square holes 22 and 23 punched out to be larger than the diameter of the square shaft portion 10. 23 is squarely fitted to the square shaft portion 10 with play. 24 and 25 are elongated holes formed in the auxiliary plates 20 and 21;
Reference numerals 6 and 27 are screws to be screwed into the screw holes 18 and 19 via the long holes 24 and 25.

Thus, as described above, the left and right side walls 14,
Each of the auxiliary plates 15 and the auxiliary plates 20 and 21 independently fits into the square shaft portion 10 of the pivot shaft 9 with play, but the left and right side walls 14 and 15 and the auxiliary plates 20 and 21 After being twisted to the opposite sides respectively, the screws 26 and 27 are fixed to each other, so that square shaft fitting without play can be achieved. That is, first, the right round bar portion 12 of the pivot shaft 9 is
Of the right side wall 15 after passing through the square hole 22 of the auxiliary plate 20 and the square hole 23 of the auxiliary plate 21.
Through the other side. Next, the on-off valve 13 which is loosely engaged with the square shaft portion 10 is twisted counterclockwise with respect to the square shaft portion 10 so that play is left in the right rotation direction but play is left in the left rotation direction. Not to remain. Next, in this state, the auxiliary plate 20 and the auxiliary plate 21 are twisted rightward in the clockwise direction with respect to the square shaft portion 10, so that play is left in the leftward rotation direction, but play is left in the rightward rotation direction. Not to remain. Thus, the left and right side walls 14, 15 and the auxiliary plates 20, 2
1 is set in a state where play is left in only one direction with respect to the square shaft portion 10, and both are fixed with screws 26 and 27. Thereby, as a whole, the left and right side walls 14, 15 and the auxiliary plate 2
0 and 21 can be a square shaft fitting with no play to the square shaft portion 10.

The left and right round bar portions 11 and 12 of the pivot shaft 9 are provided with through holes 30 and 3 in the left and right side walls 28 and 29 of the supply hopper 2.
Projecting outward through 1. Of the right and left side walls 28 and 29, the through hole 31 of one right side wall 29 is formed to have the same diameter as the right round bar portion 12 and acts as a shaft hole for supporting the right round bar portion 12 while the other hole is formed. The through hole 30 in the left side wall 28 may be formed to be larger than the diameter of the left round bar portion 11 to adjust the height of the open / close valve 13 to be described later on the left and right, and may function as a simple insertion hole.

Reference numeral 32 denotes a height adjusting link having a shaft hole 33 formed at one end thereof for inserting the left round bar portion 11, and a through hole 34 at the other end.
Is screwed into the screw hole 36 of the left side wall 28 and fixed to the left side wall 28. By adjusting the shaft hole 33 of the height adjustment link 32 up and down around the screw 35, it is possible to correct the fine balance between the left and right of the open / close valve 13. 3
Reference numeral 7 denotes a manual rotary lever, and the left round bar 1
After passing through 1, it is fixed to the left and right round bar portions 11 by screws 40 screwed into the screw holes 39.

[0012]

According to the present invention, the right round bar portion 12 of the pivot shaft 9 is inserted into the through hole 30 of the left side wall 28 and the square hole 1 of the left side wall 14.
6. Through hole 3 of right side wall 29 through square hole 22 of auxiliary plate 20, square hole 23 of auxiliary plate 21, and square hole 17 of right side wall 15.
1, the opening / closing valve 13 which is loosely engaged with the angular shaft portion 10 of the pivot shaft 9 is twisted counterclockwise with respect to the angular shaft portion 10 so that the rattle remains in the clockwise direction. In a state where no backlash is left in the left rotation direction, the auxiliary plate 20 and the auxiliary plate 21 are twisted clockwise with respect to the square shaft portion 10 so that backlash remains in the left rotation direction but right rotation. In the state where no play remains in the direction, screws 26 and 27 are
The auxiliary plates 20 and 21 are fixed to the on-off valve 13 by inserting the auxiliary plates 20 and 21 into the screw holes 18 and 19. Thereby, as a whole, the left and right side walls 14 and 15 and the auxiliary plates 20 and 21
Can be fitted to the square shaft portion 10 without play (there is only one auxiliary plate).

Next, the shaft hole 33 of the height adjusting link 32 is inserted through the left round bar portion 11 of the pivot shaft 9 so that the height adjusting link 32
The screw 35 inserted through the through hole 34 is temporarily fixed to the screw hole 36, and in this state, the height position of the shaft hole 33 is adjusted, so that the distance between the lower side of the on-off valve 13 and the feeding belt 4 is uniform left and right. The left and right heights of the on-off valve 13 are adjusted so that the height adjustment link 32 is adjusted.
Fixed to.

Next, after the through hole 38 of the manual rotary lever 37 is inserted into the left round bar portion 11, the screw 40 is screwed into the screw hole 39, and the manual rotary lever 37 is fixed to the left round bar portion 11.
Thereby, the supply shutter 6 is assembled.

[0015]

As described above, according to the present invention, the upper supply hopper 2, the supply belt 4 provided below the supply hopper 2, and the supply hopper 2 and the supply belt 4 are formed. The supply hopper 2 includes a supply port 5 and a supply shutter 6 attached to the supply port 5. The both ends of the pivot shaft 9 to which is fixed are supported, and square holes 16 and 17 slightly larger than the square shaft portion 10 are formed in the left and right side plates 14 and 15 of the open / close valve 13 of the supply shutter 6. The square shaft 10 is loosely inserted through the square holes 16 and 17 and rotated with respect to the square shaft 10 until there is no looseness in any one direction.
The square hole 22 of at least one auxiliary plate 20 having a square hole 22 of substantially the same size as the square holes 16 and 17 is provided so as to pass through the square shaft portion 10. Or the rotation part of the auxiliary plate 20 is fixed to one of the left and right side plates 14 and 15 by screws 26 after rotating the square shaft portion 10 until the slack is eliminated in the other direction. The opening and closing valve 13 can be fixed to the square shaft portion 10 without play even if the square holes 16 and 17 of the opening and closing valve 13 are formed without performing high-precision press working. Thereby, the opening degree of the supply port 5 can be accurately adjusted, and soil having a desired thickness can be supplied to the seedling raising box.

[Brief description of the drawings]

FIG. 1 is an overall side view.

FIG. 2 is an exploded perspective view of a supply shutter.

FIG. 3 is a sectional view of a supply shutter.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Soil supply device for seedling raising box, 2 ... Supply hopper, 3 ... Roller, 4 ... Sending belt, 5 ... Supply port, 6 ... Supply shutter, 7 ... Placement table, 8 ... Space, 9 ... Pivot shaft, 10 ... Square Shaft, 11: Left round bar, 12: Right round bar, 13: On-off valve,
14 left wall, 15 right wall, 16 square hole, 17 square hole, 18 screw hole, 19 screw hole, 20 auxiliary plate, 21
... auxiliary plate, 22 ... square hole, 23 ... square hole, 24 ... long hole, 25
... Elongated hole, 26 ... Screw, 27 ... Screw, 28 ... Left wall, 29
... right side wall, 30 ... through hole, 31 ... through hole, 32 ... height adjustment link, 33 ... shaft hole, 34 ... through hole, 35 ... screw, 36 ... screw hole, 37 ... manual rotation lever, 38 ... through hole , 39 ... screw holes, 40 ... screws.

Claims (1)

(57) [Claims] An upper supply hopper, a supply belt provided at a lower portion of the supply hopper, a supply port formed between the supply hopper and the supply belt;
A supply shutter 6 attached to the supply port 5;
9 has a square shaft part 10 at the middle part and a manual rotary lever 3 at the end part.
Both ends of the pivot shaft 9 to which the fixing shaft 7 is fixed are supported, and square holes 16 and 17 slightly larger than the square shaft portion 10 are formed in the left and right side plates 14 and 15 of the open / close valve 13 of the supply shutter 6. The square shaft 10 is loosely inserted through the square holes 16 and 17 and rotated with respect to the square shaft 10 until there is no looseness in any one direction. The square hole 22 of at least one auxiliary plate 20 having a square hole 22 of substantially the same size as that of the auxiliary plate 20 is provided so as to be inserted into the square shaft portion 10 until the auxiliary plate 20 is not loosened in any other direction. After rotating with respect to the square shaft portion 10, the auxiliary plate 2
A supply shutter of a seedling box soil supply device in which a rotating portion of 0 is fixed to one of the left and right side plates 14 and 15 with a screw 26.