JP7345168B2 - Soil supply device for seedling containers - Google Patents

Description

The present invention relates to a soil supply device for seedling growing containers.

Conventionally, a bed soil supply device that supplies bed soil from above into the seedling raising container is installed above a transfer table having a transfer means for horizontally transporting the seedling raising container from the starting end to the terminal end. The supply device includes a soil supply belt below the soil supply hopper, and a soil delivery adjustment shutter that adjusts the opening amount of the soil delivery outlet at the soil delivery outlet of the soil supply belt. A soil supply device for a seedling-raising container configured to be adjusted by a shutter adjustment shaft having an adjustment dial is known (Patent Document 1).

Japanese Patent Application Publication No. 8-196150

The above-mentioned known example has a configuration in which the opening amount of the bed soil delivery adjustment shutter is adjusted by turning an adjustment dial, so if the bed soil delivery outlet is clogged with a clod larger than the opening width, bed soil will not be supplied from the trapped soil clod portion. There are challenges.
In order to remove this clod, it is necessary to turn the adjustment dial and open the bed soil delivery adjustment shutter, which poses a problem in that the removal work is troublesome.
In addition, to remove clods, turn the adjustment dial and open the soil dispensing adjustment shutter, so once the clods are removed, the opening amount of the soil dispensing outlet must be adjusted again using the soil dispensing shutter. In this respect, there is also a problem that the operation is troublesome.
Another problem is that when supplying bedding soil to the seedling-growing container, more bedding soil is dropped than necessary and the bedding soil is wasted.
The present invention has devised the structure of the soil supply device for seedling raising containers to make it easier to adjust the opening amount of the bed soil outlet, to easily remove clods of soil, and to be able to reliably supply bed soil without waste. This is what I did.

The invention of claim 1 provides a method for supplying bed soil into the seedling growing container A from above at a position above a transfer table 1 having a transfer means 2 for transferring the seedling growing container A from the starting end side to the terminal end side in a substantially horizontal state. A bed soil supply device 4 is provided, and the bed soil supply device 4 has an endless bed soil supply belt 15 that rotates and moves in a direction parallel to the transfer direction of the seedling raising container A below the bed soil supply hopper 6 provided at the top. Above the upper surface of the bedding supply belt 15, there is provided a bedding adjustment shutter 21 for adjusting the amount of bedding delivered from the bedding outlet 20, and the bedding adjusting shutter 21 is rotatably mounted on a shaft 24. , the bed soil delivery adjustment shutter 21 is provided with a bed soil delivery amount adjustment mechanism T that rotates the bed soil delivery adjustment shutter 21 to adjust the opening amount of the bed soil delivery outlet 20, and the bed soil delivery amount adjustment mechanism T is It has a shutter adjustment shaft 26 for rotating and fully opening the floor soil payout adjustment shutter 21, and a single adjustment dial 30 for vertically adjusting and upwardly moving the shutter adjustment shaft 26. When the shutter adjustment shaft 26 is screwed onto the upper part of the shutter adjustment shaft 26, which can freely move up relative to the support part 28 provided on the soil supply hopper 6 side, but whose downward movement is restricted and is rotatably supported, and the adjustment dial 30 is rotated. When the shutter adjustment shaft 26 is moved up and down to widen or narrow the opening amount of the bed soil feeding outlet 20 of the bed soil supply device 4, and the adjustment dial 30 is moved up and down integrally with the shutter adjustment shaft 26 without rotating, the bed soil is fed out. This is a soil supply device for a seedling-raising container configured so that the adjustment shutter 21 is fully opened .
According to a second aspect of the invention, the shutter adjustment shaft 26 is rotatably and vertically movably attached to a support part 28 provided on the bed soil supply hopper 6, and a spring 34 is provided between the support part 28 and the bed soil delivery adjustment shutter 21. The seedling raising container is configured such that the bed soil delivery adjustment shutter 21 is always biased in a direction to close the bed soil delivery outlet 20, and the shutter adjustment shaft 26 is provided with a screw groove 32 that is screwed into a screw hole 31 of an adjustment dial 30. It was used as a soil supply device.
In the third aspect of the invention, the upper part of the shutter adjustment shaft 26 is vertically inserted into the support part 28 provided on the upper front plate 8 of the soil supply hopper 6, and adjusted by the screw groove 32 on the upper part of the shutter adjustment shaft 26. A screw hole 31 is screwed into the dial 30, and a spring 34 is inserted between a pair of upper and lower washers 26A which are inserted into the shutter adjustment shaft 26 so as to be vertically movable.
According to the fourth aspect of the invention, the lower end surface 36 of the adjustment dial 30 is brought into contact with the support part 28 by the elasticity of the spring 34 inserted into the outer periphery of the shutter adjustment shaft 26, and the adjustment dial 30 and the shutter adjustment shaft 26 are supported. This is a soil supply device for a seedling-raising container configured to allow upward movement relative to the portion 28.
According to the fifth aspect of the invention, at a position in front of the front end of the bedding soil supply belt 15 at a predetermined distance, there is provided a reflecting plate 40 for guiding the bedding soil that is transported by the bedding soil supply belt 15 and falling into the seedling growing container A. A pair of left and right soil supply width adjustment plates 55 are provided on both left and right sides of the front surface of the reflecting plate 40, and the soil supply width adjustment plates 55 form a fall guide portion 56 by a longitudinal plate member in the front and rear direction. This soil supply device for seedling-growing containers is configured to adjust the supply width of the bed soil by adjusting the left and right widths of the falling guide portions 56 of the left and right bed soil supply width adjustment plates 55 to be wide or narrow.

In the invention of claim 1, when the adjustment dial 30 is rotated, the opening amount of the bed soil delivery outlet 20 can be adjusted, and the bed soil delivery adjustment shutter 21 can be fully opened without rotating the adjustment dial 30. , soil clod removal operations can be performed easily.
In the invention of claim 2, the shutter adjustment shaft 26 is rotatably and vertically movably attached to a support portion 28 provided on the bed soil supply hopper 6, and the bed soil payout adjustment shutter 21 is always biased in the closing direction by the spring 34. Therefore, with a simple configuration, it is possible to adjust the opening amount of the bed soil pay-out outlet 20 and fully open the bed soil pay-out adjustment shutter 21 with a one-touch operation, making it easy to adjust the opening amount and perform soil clod removal operations. .
In the invention according to claim 3, the upper part of the shutter adjustment shaft 26 is vertically inserted into the support part 28 provided on the upper front plate 8 of the soil supply hopper 6, and adjusted by the screw groove 32 on the upper part of the shutter adjustment shaft 26. A screw hole 31 is screwed into the dial 30, and a spring 34 is inserted between a pair of upper and lower washers 26A that are inserted into the shutter adjustment shaft 26 so as to be vertically movable. , and opening and closing of the bed soil payout adjustment shutter 21 by rotating the adjustment dial 30 can be achieved by a single spring 34, resulting in a simple configuration.
In the invention of claim 4, the lower end surface 36 of the adjustment dial 30 is brought into contact with the support part 28 by the elasticity of the spring 34 inserted into the outer periphery of the shutter adjustment shaft 26, and the adjustment dial 30 and the shutter adjustment shaft 26 are supported. Since the construction allows upward movement of the portion 28, the soil delivery adjustment shutter 21 can be operated in a fully open state with a simple construction without rotating the adjustment dial 30.
In the fifth aspect of the invention, the fall guide portion 56 provided on the reflector plate 40 can prevent the floor soil from being unnecessarily drawn out.

A side view of the bed soil supply device. The same front view. The same front view. FIG. 3 is a side view of the bed soil delivery amount adjustment mechanism. A front view of the same and a schematic diagram showing clogged soil. Bottom view of the same. The same plan view. A side view of the bed soil supply device. Same side view. An explanatory diagram of the state of paying out bed soil. Front view of the vicinity of the reflector. Same side view. The same front view. The same enlarged front view.

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a transfer table of a bed soil supply device T, which has a transfer means 2 for transferring a seedling growing container A, and is configured to be placed on the floor by supporting legs 3. (Figure 1).
In order to facilitate understanding of the present invention, directions such as front and back, left and right, and up and down will be shown based on the transfer direction of the seedling growing container A, which is transferred by the transfer table 1 toward the front. However, the configuration of the present invention is not limited.
The bed soil supply device 4 includes a bed soil supply hopper 6 on the top of a bed soil supply frame 5. The bed soil supply hopper 6 is formed into a substantially rectangular shape in plan view, and includes vertical left and right side plates 7, an upper front plate 8, and an upper rear plate 9.

A rear-sloping front inclined plate 10 is connected to the lower end of the upper front plate 8, and a substantially vertical lower front plate 11 is connected to the lower end of the front inclined plate 10. In addition, a rear inclined plate 12 is provided at the lower end of the upper rear plate 9 so as to fall forward.
A bed soil supply belt 15 for supplying bed soil is provided below the bed soil supply hopper 6. The bed soil supply belt 15 rotates in a direction parallel to the transfer direction of the seedling raising container A, and is constituted by an endless belt. 16 is a front roller, and 17 is a rear roller.
A bedding outlet 20 is formed between the lower end of the lower front plate 11 and the upper surface of the bedding supply belt 15, and the bedding outlet 20 is provided with a bedding adjustment shutter 21 for adjusting the amount of bedding delivered. (Figure 1). The soil delivery adjustment shutter 21 constitutes a part of the soil delivery amount adjustment mechanism T, and the soil delivery adjustment shutter 21 has vertical plate-shaped mounting plates 22 on the left and right, and the mounting plates 22 are arranged in a cross section in the left and right direction. The mounting plates 22 are connected to each other by circular arc plates 23 having a circular arc shape, and the mounting plate 22 is rotatably attached to the soil supply frame 5 by a shaft 24.

A protruding attachment part 25 that protrudes forward is provided at a predetermined position between the left and right sides of the arc plate 23, and the lower part of the shutter adjustment shaft 26 that constitutes a part of the floor soil delivery amount adjustment mechanism T is attached to the protrusion attachment part 25. 27 so that it can rotate freely (Figure 3). The upper part of the shutter adjustment shaft 26 is inserted vertically into the support part 28 provided on the upper front plate 8 of the soil supply hopper 6, and a screw hole 31 is provided in the adjustment dial 30 in the screw groove 32 at the upper part of the shutter adjustment shaft 26. The lower end surface 36 of the adjustment dial 30 comes into contact with the support part 28 due to the elasticity of the spring 34 which is screwed together and inserted into the outer periphery of the shutter adjustment shaft 26, and the opening amount of the soil payout adjustment shutter 21 is adjusted (FIG. 4). .

That is, in the soil delivery amount adjustment mechanism T, normally, the lower end surface 36 of the adjustment dial 30 comes into contact with the support part 28 due to the elasticity of the spring 34, and when the adjustment dial 30 is rotated in this state, the adjustment dial 30 rotates. However, since it does not move up and down relative to the support part 28, the thread groove 32 of the shutter adjustment shaft 26 screwed into the screw hole 31 of the adjustment dial 30 acts to move the shutter adjustment shaft 26 relative to the support part 28. The opening amount of the bed soil pay-out outlet 20 is adjusted to be wide or narrow by moving the bed soil paying-out adjusting shutter 21 up and down.

The spring 34 is formed of a compression coil spring, and the spring 34 is inserted around the outer periphery of the shutter adjustment shaft 26. The spring 34 is disposed between a pair of upper and lower washers 26A that are inserted into the shutter adjustment shaft 26 so as to be vertically movable. 26B is a stopper that restricts upward movement of the upper washer 26A, and 28A is a bearing for the shutter adjustment shaft 26 provided on the support portion 28.
The soil delivery amount adjustment mechanism T is provided with an opening mechanism K that immediately rotates the soil delivery adjustment shutter 21 to the open position by one-touch operation without rotating the adjustment dial 30. In the opening mechanism K, when the shutter adjustment shaft 26 is inserted into the insertion hole 35 of the support part 28 so as to be movable upwardly relative to the support part 28, and the adjustment dial 30 is pulled upward against the elasticity of the spring 34, the adjustment dial 30 is opened. Reference numeral 30 is configured to pull the bed soil payout adjustment shutter 21 upward together with the shutter adjustment shaft 26 to open the bed soil payout outlet 20.

That is, in the opening mechanism K, normally, the lower end surface 36 of the adjustment dial 30 comes into contact with the support part 28 due to the elasticity of the spring 34, and operates the bed soil delivery amount adjustment mechanism T, so that the bed soil is removed by the bed soil delivery adjustment shutter 21. The opening amount of the outlet 20 is adjusted. On the other hand, the shutter adjustment shaft 26 is vertically movable with respect to the support part 28, and when the adjustment dial 30 is pulled upward against the elasticity of the spring 34, it is opened. The mechanism K allows the adjustment dial 30 to move upward together with the shutter adjustment shaft 26, thereby pulling the bed soil payout adjustment shutter 21 in the upward rotational direction around the shaft 24, and opening the bed soil payout outlet 20. let

Therefore, as shown in FIG. 5, if a clod G larger than a large clod 47 (described later) gets caught between the bed soil delivery adjustment shutter 21 and the top surface of the bed soil supply belt 15, bed soil cannot be supplied from this location. In such a case, by performing a one-touch operation of pulling the adjustment dial 30 upward, the bed soil payout adjustment shutter 21 can be rotated in the opening direction and the clod G can be discharged.

Therefore, a reflecting plate 40 is provided at a position in front of the front end of the bedding soil supply belt 15 at a predetermined interval to guide and guide the bedding soil that is conveyed by the bedding soil supply belt 15 and falling into the seedling raising container A (see FIG. ). The reflecting plate 40 is formed of a vertical plate-like member extending in the left-right direction, and the left and right sides of the reflecting plate 40 are attached to the side plates 42 of the soil supply frame 5 via attachment members 41 so as to be adjustable in angle and vertical position.
The reflector plate 40 receives the bed soil thrown forward from the bed soil supply belt 15, reflects it backward, and when it reflects and moves it, it divides the grain size of the bed soil into large and small ones while it is passing through. It has the effect of supplying the seedlings to the seedling growing container A.

That is, when the bed soil is simply dropped from the bed soil supply belt 15, the sieved soil 45, which has a light specific gravity, immediately falls downward, and the small grain soil 46, which has a larger particle size than the sieved soil 45, is sieved further away than the sieved soil 45. It is dropped onto soil 45, and large lump soil 47, which has a larger particle size than small grain soil 46, is caused to fall further away.
In the present invention, the large clod soil 47 with a large particle size is blown away by the reaction force of the collision force applied to the reflector 40 and positioned at the bottom of the seedling raising container A, and then the small particle soil 46 is transferred to the large clod soil 47. The bed soil can be supplied in a rough three-layer configuration with sifted soil 45 positioned on top and sieved soil 45 positioned at the top layer position, thereby improving the growth of seeds and seedlings.

Specifically, the mounting member 41 is rotatably attached to the side plate 42 of the soil supply frame 5 by bolts 50, and the inclination angle of the reflection plate 40 is adjusted by rotating the mounting member 41 around the bolts 50.
The tip of the mounting member 41 is attached by inserting a bolt 51 into an insertion hole 52 at the top of the reflection plate 40. The insertion hole 52 is formed into a long hole in the vertical direction, and the reflection plate 40 is moved up and down with respect to the bolt 51. to adjust the vertical position.
A pair of left and right soil supply width adjusting plates 55 are provided on both left and right sides of the front surface of the reflecting plate 40. The bed soil supply width adjustment plate 55 forms a fall guide part 56 by a longitudinal plate member in the front and rear direction, and adjusts the left and right width of the fall guide part 56 of the left and right bed soil supply width adjustment plates 55 to widen or narrow, thereby adjusting the width of the bed soil. The configuration is such that the supply width can be adjusted.

Specifically, the bed soil supply width adjustment plate 55 has a mounting part 57 formed by a vertical plate member in the left and right direction integrally formed on the outside of the fall guide part 56, and the upper and lower middle parts of the mounting part 57 are connected to each other by a shaft 58. It is rotatably attached to the front surface of the reflecting plate 40, and the fall guide part 56 of the bed soil supply width adjusting plate 55 is rotated about a shaft 58 to adjust the inclination angle of the fall guide part 56. A bolt 60 is provided at the top of the mounting part 57, and the bolt 60 is installed by inserting it into an insertion hole 61 formed in an arc shape around the shaft 58 provided at the top of the reflection plate 40. The position of the soil supply width adjusting plate 55 is fixed.

(Action of embodiment)
The present invention has the above-mentioned configuration, and when the seedling growing container A is supplied to the transfer table 1, it is brought to the lower part of the soil supply device 4 by the transfer means 2, and is supplied with soil by the soil supply device 4.
The bed soil supply device 4 includes a bed soil supply hopper 6 on the top of a bed soil supply frame 5, a bed soil supply belt 15 below the bed soil supply hopper 6, and a bed soil supply belt 15 for transporting the seedling raising container A. It rotates from the rear side to the front side in a direction parallel to the direction, drops the bed soil at the front end of the bed soil supply belt 15, and supplies the bed soil to the seedling growing container A that is moving below.

The bed soil delivery amount adjustment mechanism T forms a bed soil delivery outlet 20 between the lower end of the lower front plate 11 of the bed soil supply hopper 6 and the upper surface of the bed soil supply belt 15. A bed soil delivery adjustment shutter 21 is provided to adjust the amount of bed soil delivered, and the bed soil delivery adjustment shutter 21 adjusts the opening amount of the bed soil delivery outlet 20 to widen or narrow it to adjust the amount of bed soil supplied to the seedling raising container A. .

The floor soil delivery adjustment shutter 21 is provided with vertical plate-shaped mounting plates 22 on both left and right sides, and the mounting plates 22 are connected by an arcuate plate 23 having an arc-shaped cross section in the left and right direction. The mechanism T for adjusting the amount of soil dispensing is mounted rotatably on a shaft 24 at is rotatably mounted on a shaft 27, and the upper part of the shutter adjustment shaft 26 is rotatably and vertically movably mounted on a support portion 28 provided on the upper rear plate 9 of the soil supply hopper 6. Since the adjustment dial 30 is screwed onto the upper end, when the adjustment dial 30 is rotated, the shutter adjustment shaft 26 is moved up and down with respect to the bed soil pay-out adjustment shutter 21, and thereby, the bed soil pay-out adjustment shutter 21 The amount of opening for the bed soil outlet 20 is adjusted.

That is, the spring 34 is inserted into the outer periphery of the shutter adjustment shaft 26, and since the spring 34 always biases the soil delivery adjustment shutter 21 in the closing direction, the lower end surface 36 of the adjustment dial 30 is brought into contact with the support part 28. When the adjustment dial 30 is rotated in the state of When the shutter 30 is rotated, the shutter adjustment shaft 26 is moved up and down with respect to the adjustment dial 30, and the opening amount of the soil delivery adjustment shutter 21 can be adjusted.

The mechanism T for adjusting the amount of soil fed out is provided with an opening mechanism K that instantly rotates the soil feeding adjustment shutter 21 to the open position. In the opening mechanism K, the shutter adjustment shaft 26 is inserted into the insertion hole 35 of the support part 28 so as to be movable upwardly relative to the support part 28, and normally the lower end surface 36 of the adjustment dial 30 is in contact with the support part 28, and the shutter is closed. When the adjustment shaft 26 is located at the normal position and the adjustment dial 30 is rotated in this state, the lower end surface 36 of the adjustment dial 30 comes into contact with the support part 28 due to the elasticity of the spring 34, and the adjustment dial 30 is rotated. By moving the shutter adjustment shaft 26 up and down, the opening amount of the soil payout adjustment shutter 21 can be adjusted. When the adjustment dial 30 is pulled upward against the elasticity of the spring 34, the adjustment dial 30 and the shutter adjustment shaft 26 move toward the floor. Since the soil delivery adjustment shutter 21 is pulled upward to open the bed soil delivery outlet 20, if a clod of soil gets caught between the bed soil delivery adjustment shutter 21 and the top surface of the bed soil supply belt 15, it will be removed from the floor from this location. Although soil cannot be supplied, in such a case, by one-touch operation of pulling the adjustment dial 30 upward, the bed soil delivery adjustment shutter 21 can be rotated in the opening direction to discharge the clod.

Then, when the lower end surface 36 of the adjustment dial 30 pulled upward is brought into contact with the upper surface of the support part 28, the bed soil payout adjustment shutter 21 returns to its original position with the opening amount still adjusted.
Therefore, by providing the spring 34 on the shutter adjustment shaft 26, it is possible to provide the soil dispensing amount adjusting mechanism T with an opening mechanism K that instantly rotates the soil dispensing adjustment shutter 21 to the open position. To facilitate the removal of clods by opening the bed soil outlet 20 with a one-touch operation and returning the bed soil pay-out adjustment shutter 21 to its original state in which the opening amount has been adjusted with a one-touch operation. Can be done.

Therefore, a reflector plate 40 is provided at a position in front of the front end of the bedding soil supply belt 15 at a predetermined distance to guide and guide the bedding soil that is conveyed by the bedding soil supply belt 15 and falling into the seedling raising container A. The reflecting plate 40 receives the bed soil thrown forward from the bed soil supply belt 15 and reflects it backward, and when it reflects and moves it, the large lump soil 47 with a large particle size is transferred to the reflector plate 40. The seedlings are blown far away by the reaction force of the collision force applied to the seedlings and placed at the bottom of the seedling raising container A. Next, the small grain soil 46 is placed on the large lump soil 47, and the sifted soil 45 is placed on the top layer. It is possible to supply bed soil to a three-layered structure, which improves the growth of seeds and seedlings.

A pair of left and right soil supply width adjustment plates 55 are provided on both left and right sides of the front surface of the reflector plate 40, and the soil supply width adjustment plates 55 form a fall guide portion 56 by a longitudinal plate member in the front and rear direction, and Since the width of the bed soil is adjusted by adjusting the left and right width of the falling guide portion 56 of the soil supply width adjusting plate 55, it is possible to prevent the bed soil from scattering when supplying the bed soil. .
In other words, since the amount of bed soil that falls on the left and right sides of the bed soil outlet 20 tends to be slightly smaller than the center, the left and right widths of the bed soil supply belt 15 and the bed soil feed outlet 20 are equal to the left and right width of the seedling raising container A. However, if the width of the bed soil supply belt 15 and the bed soil outlet 20 is too wide than the left and right width of the seedling raising container A, the bed soil will be The bed soil may be scattered and wasted during supply, and this depends on various factors such as the width of the seedling raising container A used, the particle size of the bed soil used, and the degree of dryness. In the present invention, a pair of bed soil supply width adjusting plates 55 are provided on both left and right sides of the front surface of the reflector plate 40, so that the supply width when feeding the bed soil is in an optimal state, and there is no shortage in the seedling raising container A. In addition to reliably supplying the bed soil, it is possible to prevent the bed soil from scattering when supplying the bed soil, thereby reducing wasted bed soil consumption and saving energy.

Specifically, the bed soil supply width adjustment plate 55 has a mounting part 57 formed by a vertical plate member in the left and right direction integrally formed on the outside of the fall guide part 56, and the upper and lower middle parts of the mounting part 57 are connected to each other by a shaft 58. Since it is rotatably attached to the front surface of the reflector plate 40, by rotating the fall guide part 56 of the bed soil supply width adjustment plate 55 about the shaft 58, the inclination angle of the fall guide part 56 can be adjusted. In this state, when the bolts 60 on the upper part of the mounting portion 57 are tightened, the position of the bed soil supply width adjusting plate 55 after the horizontal width adjustment is fixed by the bolts 60.

DESCRIPTION OF SYMBOLS 1...Transfer table, 2...Transfer means, 3...Support leg, 4...Bed soil supply device, 5...Bed soil supply frame, 6...Bed soil supply hopper, 7...Left and right side plates, 8...Upper front plate, 9...Upper rear Plate, 10... Front inclined plate, 11... Lower front plate, 12... Rear inclined plate, 15... Floor soil supply belt, 16... Front roller, 17... Rear roller, 20... Floor soil outlet, 21... Floor Soil delivery adjustment shutter, 22...Mounting plate, 23...Circular plate, 24...Shaft, 25...Protruding attachment part, 26...Shutter adjustment shaft, 27...Shaft, 28...Support part, 30...Adjustment dial, 34...Spring, 35...Insertion hole, 40...Reflector, 41...Mounting member, 42...Side plate, 45...Sieved soil, 46...Small soil, 47...Large clod soil, 50...Bolt, 51...Bolt, 52...Insertion hole, 55... Floor soil supply width adjustment plate, 56... Falling guide part, 57... Mounting part, 58... Shaft, 60... Bolt, 61... Insertion hole.

Claims (5)

A bed soil supply device 4 for supplying bed soil from above into the seedling raising container A is provided above the transfer table 1 having a transport means 2 for transporting the seedling raising container A from the starting end to the terminal end in a substantially horizontal state. The bed soil supply device 4 is provided with an endless bed soil supply belt 15 that rotates in a direction parallel to the transfer direction of the seedling raising container A below the bed soil supply hopper 6 provided at the top. A bed soil pay-out adjustment shutter 21 for adjusting the amount of bed soil delivered from the bed soil delivery outlet 20 is provided above the top surface, and the bed soil pay-out adjustment shutter 21 is rotatably mounted on a shaft 24. is provided with a bed soil delivery amount adjustment mechanism T that rotates the bed soil delivery adjustment shutter 21 to adjust the opening amount of the bed soil delivery outlet 20. It has a shutter adjustment shaft 26 that rotates and fully opens the shutter, and a single adjustment dial 30 that allows the shutter adjustment shaft 26 to be adjusted up and down and moved upward, and the adjustment dial 30 is provided on the soil supply hopper 6 side. The shutter adjustment shaft 26 is screwed onto the upper part of the shutter adjustment shaft 26, which can freely move up and down with respect to the supported support part 28, but whose down movement is restricted and is rotatably supported.When the adjustment dial 30 is rotated, the shutter adjustment shaft 26 moves up and down. By adjusting the opening amount of the bedding outlet 20 of the bedding supply device 4 to be wide or narrow, and moving the adjustment dial 30 up integrally with the shutter adjustment shaft 26 without rotating the bedding dial 30, the bedding bedding adjusting shutter 21 is fully opened. A soil supply device for seedling-raising containers configured to In the first aspect, the shutter adjustment shaft 26 is rotatably and vertically movably attached to a support part 28 provided in the bed soil supply hopper 6, and is fixed to the bed by a spring 34 provided between the support part 28 and the bed soil delivery adjustment shutter 21. The soil feeding container for seedlings is provided with a structure in which the soil feeding adjustment shutter 21 is always biased in a direction to close the bed soil feeding outlet 20, and the shutter adjusting shaft 26 is provided with a screw groove 32 that is screwed into a screw hole 31 of an adjustment dial 30. Device. In claim 1 or 2, the upper part of the shutter adjustment shaft 26 is vertically inserted into the support part 28 provided on the upper front plate 8 of the soil supply hopper 6, and the upper part of the shutter adjustment shaft 26 is inserted into the thread groove 32 in the upper part of the shutter adjustment shaft 26. A soil supply device for a seedling-raising container has a screw hole 31 screwed into an adjustment dial 30, and a spring 34 inserted between a pair of upper and lower washers 26A inserted into a shutter adjustment shaft 26 so as to be vertically movable. In claim 1, claim 2, or claim 3, the lower end surface 36 of the adjustment dial 30 is brought into contact with the support part 28 by the elasticity of the spring 34 inserted into the outer periphery of the shutter adjustment shaft 26, and the adjustment dial 30 and A soil supply device for a seedling-raising container configured to allow upward movement of a shutter adjustment shaft 26 with respect to a support portion 28. In any one of claims 1 to 4, at a position in front of the front end of the bedding soil supply belt 15 at a predetermined distance, there is provided a bedding soil that is conveyed by the bedding soil supply belt 15 and falls to the seedling raising container A. A guiding reflecting plate 40 is provided, and a pair of right and left soil supply width adjustment plates 55 are provided on both left and right sides of the front surface of the reflection plate 40, and the soil supply width adjustment plates 55 are configured as vertical plate members in the front and rear directions to form a fall guide section. 56, and the left and right widths of the falling guide portions 56 of the left and right bed soil supply width adjusting plates 55 are adjusted to wide and narrow, thereby adjusting the supply width of the bed soil.

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