JPH0395023A - Stacker for seedling breeding box - Google Patents

Abstract

PURPOSE:To increase the number of pieces placed in the stacking process with reduced operating quantity at the time of stacking manually and without increasing the feed speed at the time of using a device by lifting and holding a seedling breeding box upon detecting its arrival into the specified position and letting it fall upon detecting the arrival of the following seedling breeding box under the lifted seedling bleeding box, thus performing stacking. CONSTITUTION:Prior to a seedling breeding box 1 reaching a lifted position, a first air cylinder 21 is expanded as well as second air cylinders 24, 24 are contracted, and upon detecting the seedling breeding box 1 by a first sensor 25, the cylinder 21 is contracted. The seedling breeding box 1 is thereby lifted and held in the state of being locked at the engaging pieces 23a, 23a. When the following seedling breeding box 1 is then detected by a second sensor 26 to have reached approximately under the seedling breeding box 11 in the lifted state, the cylinders 24, 24 are expanded to let the seedling breeding box 1 in the held state fall, thus performing two-stage stacking. A third sensor 27 is for discriminating whether the seedling breeding box 1 detected by the sensor 25 is the final one so as not to have the final seedling breeding box 1 held in the lifted state at the time of terminating the work and the like.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a device for stacking seedling boxes, and more particularly, to a device for stacking seedling boxes after sowing in order to perform stacking and growing seedlings.

[Conventional technology]

Conventionally, there has been a device for stacking seedling boxes after sowing in order to perform stacking of seedlings, as shown in Japanese Patent Application Laid-open No. 63-71025. The seedling boxes are held in a horizontal position like a shelf and lifted, and the seedling boxes that have reached a predetermined level by being lifted in this way are sent laterally in the horizontal position and stacked continuously at a predetermined position. There is.

[Problem to be solved by the invention]

Furthermore, when carrying out stacked seedling raising, the seedling growing boxes after sowing may be stacked manually without using the device of the above-mentioned reference.

However, when stacking seedling boxes by hand, the work requires picking up the seedling boxes sent out from the sowing line via a conveyor or the like one by one and placing them successively on a trolley, etc. Workers must move their bodies frequently, making the work cumbersome.

In addition, when carrying out stacked seedling raising, the number of stacked seedling raising boxes placed on a trolley or the like is about 30.

Furthermore, when stacking seedling boxes using the device cited in the above reference, since this device has a structure that lifts the seedling boxes in a horizontal position like a shelf, the feeding of the seedling boxes fed into the device must be stopped. It will then be lifted up.

This means that after a seedling box is sent in, it is impossible to send in the next seedling box until this box is lifted, and this device has a structure that makes it difficult to perform high-speed stacking. ing.

Incidentally, if the seedling box is fed into this device at a high altitude in order to increase throughput, when the feed is stopped, the seedling box will be uneven on the floor, causing seedlings that are unsuitable for planting. Become.

The purpose of the present invention is to reduce the amount of movement required by the operator when performing manual stacking work, and to reduce the amount of movement required by the operator when stacking the seedling boxes by hand, and to stack the seedling boxes without increasing the feeding speed when using a stacking device such as the one in the reference. The point is to rationally configure an apparatus that can increase the number of sheets processed.

[Means to solve the problem]

The features of the present invention include a conveying device that places the seedlings after sowing and continuously conveys them in the horizontal direction, and detects when the seedling growing box sent by this conveying device has reached a predetermined position and moves the seedling growing box upward. a lifting means for lifting and holding the seedling-raising box; and a lifting means for lifting and holding the seedling-raising box by the lifting means; detecting that the next seedling-growing box has been sent to a position substantially below the seedling-raising box; and lifting the raised seedling-growing box; The lowering means constitutes a stacking system of seedling boxes, and when the seedling boxes are lowered, the seedling box on the side that receives the seedling boxes slides toward the upper side in the conveying direction relative to the conveying device. The above-mentioned conveying device is constructed so as to be able to perform the following operations, and its functions and effects are as follows.

[For production]

When the above-mentioned characteristics are configured as shown in FIGS. 1 to 5, for example, the seedling growing box (1) sent to the conveying device (17) is lifted by the lifting means (E) and then lowered by the lowering means (F).
As a result, the seedling box (1) is stacked on top of the next seedling box (1), and when it descends, the seedling box (1), which has stopped moving horizontally, overlaps the top of the moving seedling box (1), so it moves. Seedling raising box (l) in condition (seedling raising box (l) on the receiving side
)) A force acts on the transport device (17>) toward the upper side in the transport direction, but because the transport device (1) allows the seedling growing box (1) to slide, in other words, it allows a delay in movement. When a force toward the upper side in the transport direction is applied, the impact acting on each of the seedling growing boxes (1), (1) is softened.

In other words, this device stacks the seedling boxes that are sent continuously in two tiers and sends them out, so when stacking is done manually, the operator can simply install this device in the conveyance system after the sowing line. This means that two seedling boxes (1) and (1) can be handled at once, and even when using a stacking device as shown in the reference, just by installing the device in the transport system, two seedling growing boxes (1) and (1) can be handled at once. This means that the boxes (1) and (1) can be lifted up on a shelf at once, and in addition, with this device, it is possible to lift the boxes (1) and (1) in a shelf-like manner.
Even though the structure is such that the seedling box (1) is stacked on top of the seedling box (1), continuous work can be carried out without shifting the floor.

〔Effect of the invention〕

Therefore, when performing manual stacking work, the amount of movement performed by the worker is reduced, and when using a stacking device that lifts the seedling boxes into a shelf, the speed at which the seedling boxes are fed is not increased. A device that can increase the number of stacked sheets has been rationally constructed.

〔Example〕 Embodiments of the present invention will be described below based on the drawings.

Figure 4 shows a plant that consistently performs everything from seeding to stacking. , this elevator unit (2)
A feeding device (3) that separates and sends out seedling growing boxes (1) one by one from a group of seedling growing boxes (1g); and this feeding device (3).
A seeding processing mechanism (A) performs seeding processing on seedling growing boxes (1) that are continuously sent out from ) is stacked up and down in two stages and sent out (E
) and a chain conveyor (5) from this stacking device (E).
) are sent via two-tiered seedling boxes (1), (1
) and a stacking mechanism (C) that stacks 30 sheets on a transport cart (6).

In addition, the seedling boxes (1) stacked in this plant are allowed to germinate in an environment of appropriate temperature and humidity, then transferred to a greening shelf (not shown), and grown by supplying moisture and sunlight. It is designed to let you do so.

Further, the seeding processing mechanism (A) includes a belt conveyor (7).
, floor feeding device (8), irrigation device (9), seeding device (I
O), a soil covering device (11), and a rake-type conveyor (12) and two conveyors (13) for each of the floor supply device (8) and the soil covering device (1l),
(13), and the stacking mechanism (C) is fed with two stacked seedling boxes (1),
(1) Lifting device (
14) and the seedling box (which has reached the top of the lift device (l4)).
1), (1) to the stacking position in a horizontal position, and a transport trolley (6) at the stacking position.
) and an elevator (l6) that supports the stacking apparatus (16) in a level-adjustable manner.The stacking apparatus (E) is constructed as follows.

In other words, as shown in FIGS. 1 to 3 and 5, this stacking device (E) uses metal rollers (17a) to place seedling boxes (1) and continuously transport them in the horizontal direction. A transport device (17) comprising a plurality of ... and a main frame (l
8), an elevating frame (20) configured to be movable up and down while being guided by guide rods (19), and a double-acting first air cylinder that moves the elevating frame (20) up and down. (21) and lifting frame (20)
On the other hand, the guide rods (22), (22) guide the guide rods (22), (22) so that they can slide freely in opposing horizontal directions, and are moved in the direction in which they approach each other. A pair of slide members (23) having engaging pieces (23a) that reach a position overlapping with the bottom wall (1a) of the seedling raising box (1). (23) and a pair of slide members (
23), a pair of double-acting second air cylinders (24), (24) that slide simultaneously;
A first sensor (25) detects that the seedling growing box (1) has reached the lifted position, and detects that the next seedling growing box (1) has reached the position where the lifted seedling growing box (1) should be lowered. a second sensor (26) that detects that the seedling boxes (1) are being sent in succession, a third sensor (27) that detects that the seedling boxes (1) are being sent in succession, and a control device (28) that receives signals from these three sensors.
), first and second air cylinders (21). (24)
, (24) Air supply device (D) that supplies air to
In this device, before the seedling box (1) reaches the lifting position, the first air cylinder (2l) is
and extend the second air cylinder (24), (
24) is contracted, and when the first sensor (25) detects the seedling raising box (1), the first air cylinder (2l) is contracted to lock it to the retaining pieces (23a), (23a). Lift and hold the seedling box (1) with the
When the second sensor (26) detects that the next seedling raising box (1) has reached the lower level of the raised seedling raising box (1), the second
By extending the air cylinders (24), (24), the seedling growing boxes (1) held in the holding state are allowed to fall and are stacked in two tiers.

In this device, when the seedling growing box (1) is dropped, a force is applied to the moving seedling growing box (l) (lower seedling growing box (l)) to suppress its movement. Since the device (17) is composed of metal rollers (17a), the lower seedling growing box 0) slides on the rollers to soften the impact.

In addition, in order to perform the above-mentioned operation, the air supply device (D)
is a compressor (29) and two solenoid valves (30),
(30) and a pressure regulating valve (31) that reduces the operating speed of the air cylinder to prevent the occurrence of shock. (31), and each solenoid valve (30), (30) is operated by a signal from the control device (2nd).

Also, the I1 second and third sensors (25). (26),
(27) are each constructed of a light-sensitive type having a light emitting part (L) and a light receiving part (S), and as shown in FIG. 2, the l1 second sensor (25). (26) The directions of the light beams are set non-parallel so as not to interfere with each other, and this device (E)
Now, the detection position of the first sensor (25) is changed to the second sensor (26).
) is slightly deviated to the upper side of the transport side than the detection position.

In addition, the third sensor (27) is configured to move the seedling box (1) detected by the first sensor (25) so that the final seedling box (1) is not held in the lifted state as described above when finishing the work.
) is the final one, and in this device (E), the first sensor (25) and the third sensor (27)
The first air cylinder (2l) is allowed to contract at the timing when the seedling boxes (1) and (1) are detected at the same time (if the third sensor (27) does not detect the seedling box (1), the first air cylinder (2l) is lifted). Furthermore, this third sensor (27) is arranged at an appropriate position with reference to the raised seedling box (1) in order to eliminate false detection.

Further, in the present invention, the first sensor (25) and the control device (28)
, and the operating system for lifting the seedling box (1) are collectively referred to as lifting means (E), and the second sensor (26),
The control device (28) and the operating system for dropping the seedling box (1) are collectively referred to as a lowering means (P).

In addition, when lifting with this device (E), the conveyance speed of the roller conveyor (4) is made higher than the conveyance speed of the conveyor belt (7) of the seeding processing mechanism (A) so as not to cause interference between the seedling boxes. Yes, there is a seedling box (1) in this device (8).
) is supplied, appropriate spacing is applied to each seedling raising box (1), (1).

[Another example]

In addition to the above-mentioned embodiments, the present invention allows the conveying device to be constructed of a chain or a resin belt with a low coefficient of friction, and the lifting means and lowering means can be driven by other than a hydraulic cylinder. In addition, various operating modes and structures of the movable parts can be implemented, such as using an electric motor, and furthermore, the apparatus of the present invention can be used to improve the efficiency of manual stacking work.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the device for stacking seedling boxes according to the present invention, FIG. 1 is a partially cutaway side view of the device, FIG. 2 is a schematic plan view of the device, and FIG. 3 is a longitudinal cross-section of the device. 4 is a side view of the seeding plant, and FIG. 5 is a block diagram of the control system. (1)... Seedling raising box, (17)... Transfer device, (E)... Lifting means, (F)...
...means of descent. Figure 3

Claims (1)

[Claims] A conveyance device (17) on which raised seedlings (1) after sowing treatment are placed and continuously conveyed in the horizontal direction, and a seedling raising box (1) sent by this conveyance device (17) are detected to have reached a predetermined position. Lifting means (E) for lifting and holding the seedling raising box (1) upward with a lever; and in a state in which the seedling raising box (1) is lifted and held by the lifting means (E), approximately below the seedling raising box (1); Lowering means (for lowering the lifted seedling box (1) by detecting that the next seedling box (1) has been sent to the position)
F) constitutes a stacking system of seedling raising boxes (1), and when the seedling raising boxes (1) are lowered, the seedling raising box (1) on the side that receives the seedling raising boxes (1) is placed against the transport device (17). A stacking device for seedling growing boxes, comprising the transport device (17) so that the boxes can be slid relatively upward in the transport direction.