JPH08119453A - Seedling box delivery device - Google Patents

Abstract

PURPOSE: To make smooth delivery of seedling boxes without giving any damage to them in the delivery of the seedling boxes which are delivered one by one by inserting separating pieces between stacked seedling boxes. CONSTITUTION: Seedling boxes 1 are delivered by inserting separating pieces 2 and 3 for separation which are moved in and out by the telescoping of a pair of air cylinders C1 and C2 opposed to each other on the upper and lower sides of the seedling boxes 1 to be loaded. Also a position detector switch S2 which can change an air pressure difference between both air cylinders C1 and C2 and outputs a delivery motion by detecting the telescoping position of the air cylinder C1 of which air pressure is larger is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling box feeding device, which can be used in a feeding section for raising seedling boxes or empty seedling boxes in a seedling raising facility. When feeding each seedling box to the conveyor while separating each seedling box from the loaded seedling boxes, the seedling boxes are accurately separated without being damaged, and smooth feeding is performed.

[0002]

2. Description of the Related Art For example, in a multi-tiered seedling box, when feeding the seedlings one by one from the lowermost stage, the lowermost box and the uppermost box are separated from each other. A partition was inserted between them, and the weight of the upper box was received by the partition, and the lowermost box was dropped or separated.
In such a seedling box feeding configuration, when inserting the partition, in the configuration using an air cylinder to operate the partition,
The air cylinder may push the seedling box excessively or pinch it by the pressing force, which may result in an inaccurate partitioning action, or may distort or damage the seedling box.

[0003]

According to the present invention, a pair of air cylinders C1 and C facing each other vertically between the seedling boxes 1 to be loaded.
It is provided so as to feed the seedling box 1 while inserting and partitioning the partition pieces 2 and 3 that are advanced and retracted by the expansion and contraction of 2, and the air pressure difference between these air cylinders C1 and C2 can be changed.
A position switch S that outputs the feed interlock by detecting the expansion / contraction position of the air cylinder C1 on the side where the air pressure is high
The seedling box feeding device is provided with 2.

[0004]

[Effects and Effects of the Invention] When the seedling boxes 1 are loaded one by one, a pair of front and rear or left and right are provided between the seedling box 1 at the lowermost stage and the seedling box 1 at the upper stage directly superposed on it. The partition sections 2 and 3 are inserted by the expansion and contraction of the air cylinders C1 and C2 to support the upper loading seedling box 1. The partition pieces 2 and 3 inserted by the air cylinders C1 and C2 advance from both ends of the seedling box 1 toward the seedling box 1 side so that one air cylinder C1 reaches a certain position. ,
The position switch S2 is turned on, the advance of these air cylinders C1 and C2 is stopped, and the seedling box 1 at the lowermost stage is separated and fed out.

In such an operation, when the partition pieces 2 and 3 contact the end surfaces of the seedling box 1 and the air cylinders C1 and C2 expand and contract to push the seedling box 1 from both end surfaces,
The air cylinder C on the high air pressure side is expanded / contracted by a certain amount to turn on the position switch S2, but the expansion / contraction amount of the air cylinder C2 on the smaller side of the air cylinder C1 is small, and the seedling box is small. The excessive clamping pressure by the two partition pieces 2 and 3 of 1 will be relieved.

As described above, even if the pair of partition sections 2 and 3 for partitioning the seedling box 1 sandwich the seedling box 1, there is a difference in air pressure between the air cylinders C1 and C2. Since the position switch S2 is actuated by the expansion and contraction of the air cylinder C1 on the high air pressure side, the feeding interlocking of the seedling box 1 by the position switch S2 can be accurately output, and the partition 2 , 3 can prevent damage to the seedling box 1.

[0007]

EXAMPLES FIGS. 1 to 5 show an empty seedling box 1 for a seeding conveyor 4 of a seeding device provided as a seeding plant facility.
It shows a case where it is configured as a seedling box supply device that continuously supplies each of the boxes. The seedling box 1 conveyed in a stacked state on the second floor conveyors 5, 6, 7 is lowered to the first floor by the elevator 8 and the seedling box feeding device 9 feeds the seedling boxes onto the seeding conveyor 4 one by one, and the seeding is performed. It is sent to a sowing device provided along the conveyor 4 to be subjected to each process such as floor soil supply, seeding, covering soil, and watering.

On the conveyor 5, the empty seedling boxes 1 are piled up in an appropriate number of stages and transferred, and then passed through a corner conveyor 6 and a conveyor 7.
Can be sent to the end of the. The upper end of the elevator 8 can be seen on the front side of the conveyor 7, and the seedling box 1 extruded from the conveyor 7 can be received and lowered by the lugs 11 facing each other between the pair of left and right chains 10. The starting end portion of the seeding conveyor 4 is provided between the pair of left and right chains 10 and the seedling box 1 is fed from the feeding device 9 one by one.
It receives and conveys to the front seeding device side. Reference numeral 12 denotes an extruding plate for extruding the seedling box 1 on the conveyor 7 to the elevator 8 side, and 13 denotes this extruding cylinder. Further, the height interval between the upper and lower lugs 11 of the chain 10 is set to be larger than the loading height of the seedling box 1 and the feeding height corresponding to the feeding and dropping interval of each seedling box 1 by the seedling box feeding device 9. It is set.

With respect to the seedling box feeding device 9, the elevator 8 is temporarily stopped when each lug 11 descends slightly below the upper surface of the seeding conveyor 4. At this time, the bottom end surface of the stacked seedling box 1 is received by the stoppers 14 and 15 which are projected from the left and right directions into the descending area of the seedling box 1 by the air cylinders C3 and C4 (FIG. 2-A). Only the lug 11 will be further lowered. The partitions 2 and 3 by the air cylinders C1 and C2 are the stoppers 1
The height is set to be higher than that of Nos. 4 and 15 by an interval corresponding to the height of one box, and is set at a position retracted outward from both left and right ends of the seedling box 1. Further, the air cylinders C1, C3 on one side have position switches S1, S2, S3, S4 for detecting the expansion and contraction operation positions of the pistons at both ends, and the partition 2 or the stopper 14 comes out. Detect retreat position.

Of the air cylinders C1 and C2, the air circuit 16 of the air cylinder C2 on the side where the position switches S1 and S2 are not provided is provided with a throttle 17 capable of adjusting the aperture, and the air cylinder C1. It is set lower than the air pressure of. 18 is an air supply port of each air circuit 16,
It is connected to the pressure tank of the compressor. Instead of the throttle 17, the pipe diameter of the air circuit 16 between the air cylinders C1 and C2 may be changed.

The seedling box 1 is formed by projecting a box edge of a flat rectangular shape to the outer periphery, and the left and right partition sections 2 and 3 of the upper step section receive the box edge section by locking it. Also, the stoppers 14, 1 on the lower stage
5 receives the bottom of the box below the edge of the box. In the state where these seedling boxes 1 are superposed, a space is formed between the box edges, so that the partition pieces 2 and 3 are inserted and locked in the space between the box edges. .

As described above, in the seedling box 1 supported by the stoppers 14 and 15 in the lower part of the elevator 8, the partitions 2 and 3 come out from the left and right by the extrusion of the air cylinders C1 and C2, and as described above. Is inserted between the bottom edges of the seedling box 1 at the bottom and the second seedling box 1 at the upper side (FIG. 2-B). At this time, the seedling box 1 is large,
When the position of the seedling box 1 is deviated to the left and right and the partitions 2 and 3 by the air cylinders C1 and C2 press the seedling box 1, the partition 2 by the air cylinder C1 is
Since the air pressure is high, the air is pushed out to a certain position and the seedling box 1 is pressed toward the air cylinder C2 side on the opposite side, and the pressing force of the partition 3 by the air cylinder C2 having the low air pressure is overcome, and this partition 3 is already used. When the extended position due to is reaching a fixed position, it is pushed back by pressing the partition 2 by the air cylinder C1, and when the partition 2 reaches the constant extended position, the position switch S2 is turned on. As a result, the stoppers 14 and 15 in the next stroke are caused to retreat.

Therefore, even if the left and right partitions 2 and 3 come to sandwich the seedling box 1, the sandwiching pressure is small, and the seedling box 1 is not distorted or damaged, and is accurate. By performing the partitioning operation of the seedling box 1 and turning on the position switch S2, it is possible to perform the seedling box reeling operation in the next step. In this way, when the extended positions of the partitions 2 and 3 by the air cylinders C1 and C2 are detected by turning on the position switch S2, the stoppers 14 and 15 by the lower air cylinders C3 and C4 retreat to the left and right outer sides. Then, the engagement support at the bottom of the seedling box 1 at the bottom is removed. Therefore, the seedling box 1 at the lowermost stage is dropped, and the seedling box 1 at the upper stage side engages and supports the edge portion of the box by the partitions 2 and 3 (FIG. 2-C).
The lowermost seedling box 1 fed downward is received by the lower seeding conveyor 4 and conveyed to the front seedling device side.

When the position sensor S3 is turned on by retracting the stoppers 14 and 15 by the air cylinders C3 and C4, the air cylinders C3 and C4 are extended again, and the stoppers 14 and 15 are subsequently dropped from the upper side. It becomes the position to receive the bottom of the seedling box 1 at the bottom (Fig. 2-D). At this time, when the stoppers 14 and 15 are extended, the position switch S4 of the air cylinder C3 is turned on to return to the same operation process as in FIG. 2-A, and the air cylinders C1 and C2 move the partitions 2 and 3 together. Retreat from the seedling box 1 support position, drop the stacked seedling boxes 1 and use the lower stopper 14,
15 to support.

In FIGS. 6 to 11, the seedling boxes 1 seeded by the seeding device are stacked on the germination cart while being stacked in multiple stages. The elevator 1 conveys the seedling boxes 1 one by one upward.
9, a seedling box drawing device 21 for drawing the seedling box 1 raised by the elevator 19 toward the stacking device 20, a stacking device 20 for stacking the drawn seedling boxes 1 in multiple stages, and a stacked seedling. A transshipping device 23 for transposing the box 1 to the germination cart 22 is provided.

Seedling box 1 seeded on the seeding conveyor 4
Is sent to the lower end of the elevator 19 by the conveyor 24. In this elevator 19, lugs 26 are arranged on a chain 25 that rotates opposite to each other on the left and right sides at intervals larger than the height of the seedling box 1, and the bottom portions on both the left and right sides of the seedling box 1 are spread across the lugs 26 on the left and right. In response, the parallel state is maintained and the structure is raised.

The lower front surface of the elevator 19 receives the front edge of the seedling box 1 conveyed by the conveyor 24 so that the seedling box 1 raised by the intermittent drive of the elevator 19 is slightly pushed back. A pair of right and left seedling box guide rods 27, which are round rods to be aligned, are provided in parallel with each other (FIG.
(Fig. 7). This seedling box guide rod 27 has an elevator 1 at the upper end.
9 is fixed to the frame 28, and the lower end is inclined toward the transfer end side of the conveyor 24 at an appropriate angle α. The seedling box guide rod 27 may be guided by receiving the upper edge of the seedling box 1 at a point, and the contact surface of the seedling box 1 may have a round cross section, or may have a semicircular cross section configuration.

Seedling box 1 raised by elevator 19
Has its front edge guided by the seedling box guide rods 27 and moved on the upper surfaces of the left and right lugs 26, so that the seedling box guide rods 2
The front edge is aligned at the position where the position is raised above 7. The resistance due to the seedling box guide rod 27 can be reduced. In this way, the seedling box 1 raised by the elevator 19 is pushed by the seedling pushing plate 29 of the seedling box pulling-out device 21 and the seedling box 1 pushed by the seedling box pushing plate 29 to receive the stacking device 20. Pull-out belt 3 that pulls out to the side
0 transfers the seedling box 1 in upper and lower boxes.
The seedling box push-out plate 29 is formed by the expansion and contraction of the air cylinder 31, and the rear end surfaces of the upper and lower two seedling boxes 1 are engaged with each other to move forward V.
It can be extruded at a rate of 1.

The pull-out belt 30 is used for these two boxes of seedling boxes 1.
It is provided at a front position of a height for receiving the bottom surface of the lower side part, and is transmitted by the motor M to the same or a higher speed V2 than the extrusion speed V1 of the seedling box extrusion plate 29 through the wine way clutch 32. Reference numeral 33 is a guide plate that guides both left and right sides of the seedling box 1. The stacking device 20 holds the seedling box 1 fed from the seedling box drawing device 21 between the loading belts 34, which are a pair of flat belts on the left and right sides, and transfers the seedling boxes 1 to the elevated position by the lifting device 35. The seedling box 1 is opened and dropped and stacked on the upper surface of the pallet 36 which is intermittently lowered from the pallet 36. By the transfer device 37 including an air cylinder provided, the pallet 36 and the pallet 36 are extruded and replaced on the upper surface of the germination cart 22 prepared on one side. The stacking device 20 as described above is provided in two rows in front and rear, and the seedling box 1 by the loading belt 34 is used.
When the stacking operation of the front stacking apparatus 20 is finished, the stacking operation of (1) works alternately so as to stack the stacking apparatus 20 on the rear side so that continuous stacking is performed. Along with this, the transshipment device 37 is also alternately operated.

The front and rear pallets 36 sandwiching the seedling box 1
The loading belt 34 to be placed on is set to the same speed V3 as the pulling belt 30. In this way, the relationship between the pushing speed V1 by the pushing plate 29, the pulling speed V2 by the pulling belt 30, and the speed V3 of the loading belt 34 is V1 ≦ V2 = V3.
By setting the following, the transfer impact is not given to the seedling box 1 after sowing, and the bias due to the impact force of the bed soil, seeds or the like in the seedling box 1 is reduced.

[Brief description of drawings]

FIG. 1 is a partial front view of a seedling box feeding device.

FIG. 2 is a front view showing the operation of the seedling box feeding device.

FIG. 3 is a plan view.

FIG. 4 is a rear view showing a partially developed side view.

FIG. 5 is an enlarged rear view of a part thereof.

FIG. 6 is a side view of a nursery box elevator section.

FIG. 7 is a front view thereof.

FIG. 8 is a side view of the seedling box withdrawing device section.

FIG. 9 is a plan view thereof.

FIG. 10 is a side view of a seedling box stacking device section.

FIG. 11 is a front view thereof.

[Explanation of symbols]

 1 Seedling box 2 Sorting pieces 3 Sorting pieces C1 Air cylinder C2 Air cylinder S2 Position switch

Claims (1)

[Claims] 1. A seedling box 1 is delivered while inserting and partitioning partition pieces 2 and 3 which are advanced and retracted by a pair of air cylinders C1 and C2 facing each other between the upper and lower sides of a seedling box 1 to be loaded. And a position switch S2 that can change the air pressure difference between the two air cylinders C1 and C2 and that outputs the interlocking movement by detecting the expansion / contraction position of the air cylinder C1 on the side with the higher air pressure. Box feeding device.