JP3097158B2 - Conveyor for transferring seedling boxes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling box conveyor for use in a seedling box seeding machine or the like.

[0002]

2. Description of the Related Art In a plant-type seedling box sowing machine that seeds a seedling box while transferring the seedling box in a predetermined direction by a conveyor, a detector for detecting the seedling box is provided at an appropriate position on the seedling box transfer conveyor. Based on the detection result of the detector, a floor soil supply device, a watering device, a seeding device, a covering soil supply device, and the like are operated and stopped.

[0003]

When a mechanical sensor is used as the detector, a malfunction or a failure tends to occur due to adhesion of mud or the like. In addition, a photoelectric sensor having a light-emitting unit and a light-receiving unit sandwiching the passage of the seedling box has a large number of parts,
Adjustment of the mounting position was troublesome.

[0004]

In order to solve the above problems, the present invention has the following arrangement. That is, the seedling box transport conveyor according to the present invention is located
The seedling box guide member for preventing deviation of direction provided positionable in the direction orthogonal to the transport path of the seedling box, reflected on seedling box while moving the irradiated transport path light to the transport path side A photoelectric switch for receiving the light and detecting the seedling box.
It is characterized by being attached to a guide .

[0005]

[Function] Generally, a guide for moving the seedling box is provided on the conveyor for transferring the seedling box, and the guide is provided in accordance with the width of the seedling box to be used. The position is adjusted by moving in a direction orthogonal to the transport path. For this reason, by attaching the reflective photoelectric switch to the guide, the position of the photoelectric switch is automatically adjusted simultaneously with the adjustment of the position of the guide.

[0006]

FIG. 1 shows an embodiment of the present invention. This seedling box sowing machine 1 comprises a floor soil supply device 5, a watering device 6, and a soil filling / irrigation conveyor 2 and a sowing / covering soil conveyor 3. A sowing device 7 and a soil covering device 8 are provided in order. Seedling box supply device (not shown) at the beginning of the filling and irrigation conveyor 2
Seedling box chute 10 is connected and the seeding / covering conveyor 3
Is connected to an auxiliary conveyor 11.

[0009] The filling and irrigating conveyor 2 comprises a belt conveyor section 2a and a roller conveyor section 2b.
The soil covering conveyor 3 is constituted solely by a roller conveyor, and the seedling box 12 supplied to the starting end of the soil filling and watering conveyor 2 by the seedling box chute 10 is conveyed from right to left in FIG. The presence or absence of the seedling box 12 is detected at an appropriate position of the seedling box conveying conveyors 2 and 3, specifically, near the conveying direction upstream of the floor soil supply device 5, the seeding device 7, and the soil covering supply device 8. Switch S for turning on and off the switch
W (1-3) are provided. This photoelectric switch SW
Is a reflection-type sensor in which the light-emitting unit and the light-receiving unit are integrated, irradiates search light in the direction of the transport path 13, and receives light reflected on the side surface of the seedling box passing through the transport path. Thus, the seedling box is detected. FIG. 2 is a plan view of a main part of the conveyor, and FIG. 3 is a view taken in the direction of arrow X in FIG. 2. The photoelectric switch SW is integrally mounted on one seedling box guide 15. Seedling box guide 1
5 (15 ') is a screw 17,
17 and nuts 18 and 18, but the holes 19 and 19 through which the screws are inserted are long holes in the width direction of the conveyor, and the fixing positions of the two seedling box guides 15 and 15 'are transferred along the transport path. By shifting the guide plates 15a and 15a 'in a direction orthogonal to the direction of 13, the distance between the guide plates 15a and 15a' can be adjusted.

The floor soil supply device 5 includes a hopper 20 for storing soil for floor soil, a belt conveyor type feeding device 21 for feeding an appropriate amount of soil in the hopper, and a floor soil fed into a seedling box. And a floor soil leveling device 22 for leveling. As shown in FIG. 4, the floor soil leveling device 22 is a leveling brush 2 in which bundles of hairs 24b are planted at a plurality of locations on the outer periphery of a rotating body 24a.
, And a box press roller 26 rotatably supported by a roller support arm 25, and upper surfaces of the left and right edges 12a, 12a of the seedling box 12 by the box press roller 26 urged downward by a spring 27. While pressing, leveling brush 2
4 rotates in the direction opposite to the moving direction of the seedling box to brush the floor soil surface. A scraper 28 is attached to the roller support arm 25 near the box holding roller 26, and the scraper scrapes off the soil attached to the surface of the box holding roller 26, so that the seedling box 12 moves smoothly. And the floor soil is leveled well. Instead of providing the scraper, as shown in FIG. 5, a box holding roller 26 may be provided in contact with the leveling brush 24, and the surface of the box holding roller 26 may be cleaned with the leveling brush 24. Further, both the scraper 28 and the leveling brush 24 use the box holding roller 26.
The soil adhering to the surface may be removed. The mounting height of the leveling brush 24 is the brush height adjustment handle 30.
The mounting height of the box holding roller 26 is adjusted by a roller height adjusting bolt 31, and the tension of the spring 27 is adjusted by a spring adjusting bolt 32.

The watering device 6 is provided with a watering pipe 34 extending above the transport path of the seedling box, and sprays water on the floor soil in the seedling box 12.

The seeding device 7 comprises a seed hopper 35 for storing seeds (or paddy) and a rotary seed feeding device 36 for feeding the seeds in the hopper downward. Apply.

[0011] soil cover feeder 8 includes a hopper 38 for storing the soil for soil covering, consisting behenate Rutokonbeya type feeding device 39. to supply soil within the hopper feeding an appropriate amount at a time in the seedling box.

While the seedling box 12 is being conveyed by the earth filling / irrigation conveyor 2 and the seeding / covering conveyor 3, the above-mentioned devices sequentially supply flooring, watering, sowing, and covering soil. By being guided to the plural sets of seedling box guides 15 and 15 ′, the seedling box 12 is prevented from shifting laterally with respect to the transport path 13. When using seedling boxes having different widths, the pair of seedling box guides 15, 15 'is used according to the width.
Adjust the spacing of Since the photoelectric switch SW used in the seedling box transport conveyors 2 and 3 is of a reflection type, it is necessary to keep the distance from the photoelectric switch to the seedling box constant in order to increase the detection accuracy. Seedling box guide 15,
Since the position of the photoelectric switch SW is automatically adjusted by adjusting the interval of 15 ', it is not necessary to adjust the position of the photoelectric switch separately.

In some cases, a nursery mat made of urethane or the like is used as a substitute for the floor soil. In this case, the seedling raising mat may be manually loaded into the seedling box.
It is efficient to use the seedling mat supply device 40 as shown in FIG. In the nursery mat supply device 40, a nursery mat storage frame 41 having an open bottom surface is installed above the conveyor 2, and a pair of mat feeding rolls 42, 42 are provided on both sides of the transport path 13 below. It is provided along the transport direction of the box. The mat feeding roll 42 includes a rotating shaft 42a.
Are attached around the periphery of the mat, and have a cross shape in cross section. The length of the mat holding plate 42b is preferably set to be approximately the same as the thickness of the seedling raising mat 43. Rotating shaft 42 of a pair of mat feeding rolls
The interval between a and 42a is slightly wider than the width of the seedling mat 43. These mat feeding rolls 42, 42 are rotated by a motor 44 attached to the outer side of the seedling mat storage frame 41. In addition, below both mat feeding rolls 42, 42,
Flat mat pressing plates 46, 46 are mounted on mounting shafts 46a, 46a supported in parallel with the transport direction. A swash plate 47 is attached to the mounting shaft 46a integrally with the mat pressing plate 46. When the swash plate 47 is pushed up by the mat pressing cylinder 48, the mat pressing plate 46 rotates inward. As a control switch of the seedling mat supply device 40, a photoelectric switch SW1 'for detecting that the seedling box has reached a predetermined position is provided. In addition, the stopper cylinder 50 can protrude and retreat into the transport path.
Scan stopper plate 51 is provided.

Next, the operation of the nursery mat supply device will be described with reference to the time chart of FIG. When starting the operation, the seedling mat 4
3, ... are stored in a stack. Raising seedling mat 43 at the bottom
Are held on mat holding plates 42 b , 42 b located inside the mat feeding rolls 42, 42. In this state, the conveyor 2 is operated, and the photoelectric switch SW1 'is set to the seedling box 12
Is detected and turned on, the stopper cylinder 50 is extended, the stopper plate 51 protrudes above the conveyor, and the seedling box 12 is stopped at a predetermined position. Next, the motor 44 is started and the motor is stopped after a predetermined time, so that the mat feeding rolls 42, 1/4 turn in the direction of the arrow in FIG.
By the rotation of the mat feeding rolls 42 and 42, together with the seedling mat 43 of the lowermost is supplied unwound in the seedling box 12 downwardly, the remaining seedling mat 43, ... may fall one stage following the mat holding plate It is held in the 42 b, 42 b. Subsequently, as shown by a chain line in FIG. 7, the mat pressing cylinders 48, 48 protrude, and the mat pressing plates 46, 46 rotate inward to press the seedling mat 43 in the seedling box downward, thereby raising seedlings. The mat 43 is securely loaded in the seedling box 12. When the loading of the seedling raising mat is completed, the mat pressing cylinders 48, 48 contract, and the mat pressing plates 46, 46 return to the original positions. Next, the stopper cylinder 50 is also contracted, and the stopper plate 51 is lowered, whereby the seedling box 1 is moved.
2 resumes movement. Seedling box 12 is photoelectric switch SW1 '
, The photoelectric switch is turned off.

The seedling box sowed as described above
The shelves are fully loaded on shelves and stored in the dark for several days. After budding, transfer the seedling boxes of the trolley to every other trolley. That is, one seedling box is divided into two carts, and the vertical distance between the seedling boxes is doubled. The transfer device 60 for transferring the seedling boxes is as follows.

FIG. 9 shows a transfer device, in which a rail 62 is erected horizontally on a machine frame 61, and a mounting frame 64 to which box pushing bars 63,... It is slidably mounted on the rail 62. Note that the bogie 66 in the illustrated example is configured so that two rows of seedling boxes are loaded on each stage in front, rear, left, and right, so that the box pushing bar 63 is moved forward and backward by two rows.
Rows are provided. The mounting frame 64 can be moved in the left-right direction along the rail 62 by expanding and contracting the box pushing cylinder 67. On the side of the machine frame 61,
A platform 69 for stopping a trolley 66 (A) packed with seedling boxes and an empty trolley (B) 66.
An elevating table-mounted table 70 on which (B) is placed is provided.

An irrigation pump 72 and an electromagnetic valve 73 are installed on the upper part of the machine casing 61, and water sent from the irrigation pump is supplied to two watering pipe groups 74,..., 75,. The first watering pipe group 74,...
Are provided in the vicinity of the lower end portions of the end portions of the mounting frame 64 so as to move integrally with the mounting frame 64. The second watering pipe group 75,... Is composed of an A truck 66 (A) and a B truck 66 (B).
Are provided at the intervals. These two groups of watering pipes are located alternately with each other in accordance with the height of the shelf of the carriage 66. The pipe 77 on the electromagnetic valve side
The hose 79 connecting the pipe 78 on the mounting frame side to the mounting frame 6
4 so that it can be rolled freely.

At the start of the operation, the mounting frame 64 is retracted as shown by a chain line in FIG.
Set the cart in place. When the box pushing cylinder 67 is extended and the mounting frame 64 is moved forward, the seedling boxes 12,... Of every other stage of the A truck are pushed out of the shelf by the box pushing rods 63,. Solenoid valve at the same time
73 is opened and the seedling boxes 12,... Remaining in the A-cart are irrigated from the nozzles of the first watering pipe group 74,..., And are transferred from the nozzles of the second watering pipe group 75,. The replacement seedling boxes 12 are watered. In this way, by performing irrigation at the time of shifting from the budding process to the greening process, the cover soil that the buds have lifted can be washed off, and the growth of the seedlings thereafter can be improved. After the transfer of the seedling boxes, both the A truck 66 (A) and the B truck 66 (B) are carried to the greening house 81.

The interior of the greenhouse 81 is shown in FIGS.
As shown in FIG. That is, rails 82 made of I-shaped steel are provided along the upper portions of the inner walls on both sides,
A crane gutter 84 that hangs a large number of watering pipes 83 on the rail is movably suspended. Crane girder 84 has been in by joining a rectangular steel tube 2, is itself a main pipe for water supply. Each main pipe 8
4 a and 84 a are supplied with water by a water supply pump 87 via a hose reel 86. Hose reel 86 and main piping 84
A solenoid valve 88 is provided at the connection point a. The watering pipes 83 are attached to the crane gutter 84 in pairs. The pair of watering pumps 83, 83 are provided with nozzles 83a,... In opposite directions to each other, and are respectively connected to separate main pipes 84a, 84a. A stop valve 89 is attached to each watering pipe 83. In addition, the suspension portion of the crane gutter is provided with two pairs of rotating wheels 9 on a crane saddle 91 integrated with the crane gutter 84.
Are mounted, and the rotating wheel rides on the lower horizontal portion of the rail 82. Rotation in the motor wheel 9
2, the crane girder 84 moves the rail 82,
Move along 82. Thus, when the crane girder itself is configured as the main pipe for water supply, there are advantages such as easy installation work, reduced weight, and cost reduction.

The trolleys 66 are stored on trolley rails 95 laid on the ground. On the basis of the command inputted to the operation panel , the creators 84 reciprocate along the rails 82, 82 while the nozzles 83a of the watering pipes 83,.
The seedling boxes 12,... Loaded on the carts 66,.

[0021]

As described above, according to the present invention, seedling box transporting conveyor belt according to the present invention, fitted with a photoelectric switch of the reflection type in seedling box proposed in device provided movably in a direction perpendicular to the conveying path Therefore, the position of the guide and the photoelectric switch
Relationship is stable, since the position adjustment of the photoelectric switch is also automatically performed when performing position adjustment of the seedling box guide tool, the photoelectric
Switch enables to detect seedling box with high accuracy
Was. For this reason, the adjustment operation when switching the seedling box type is simplified. Furthermore, since the reflection type photoelectric switch is used as the seedling box detector, malfunctions and failures are reduced, and adjustment during assembly is easy.

[Brief description of the drawings]

FIG. 1 is an overall view of a seedling box sowing machine.

FIG. 2 is a plan view of a main part of a seedling box transport conveyor.

FIG. 3 is a sectional view taken along line XX in FIG. 2;

FIG. 4 is a sectional view of the floor soil leveling device.

FIG. 5 is a cross-sectional view of a different floor soil leveling device.

FIG. 6 is a front view of the seedling raising mat supply device.

FIG. 7 is a side view of the seedling raising mat supply device.

FIG. 8 is a time chart of the operation of the nursery mat supply device.

FIG. 9 is a front view of the transfer device.

FIG. 10 is an indoor view of a greening house.

11 is a view as viewed in the direction of the arrow Y in FIG. 10;

[Explanation of symbols]

REFERENCE SIGNS LIST 1 seedling box seeding machine 2 earth filling / irrigation conveyor (seedling box transport conveyor) 3 seeding / cover soil conveyor (seedling box transport conveyor) 5 floor soil supply device 6 watering device 7 seeding device 8 soil cover supply device 12 seedling box 13 Seedling box transport path 15, 15 ' Seedling box guide SW SW Photoelectric switch

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A01C 7/08 320

Claims (1)

(57) [Claims] (1) To prevent a lateral shift of a seedling box to be transported.
That the seedling box guide tool provided adjustably positioned in the direction orthogonal to the transport path of the seedling box, by irradiating the transport path of the light receiving light reflected by the seedling box during movement to the transport path side Attach a photoelectric switch that detects the seedling box to the seedling box guide
A conveyor for transferring seedling boxes, wherein