JPH03186520A - Two-tier stacking device for seedling boxes - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a two-tier stacking device for seedling growing boxes, and more specifically, it lifts up a seedling growing box sent laterally after sowing, and stacks the upper surface of the next seedling growing box. This relates to technology for superimposing images on images.

[Conventional technology]

When considering the raising of mat-shaped seedlings used in rice transplanters, there is a method called stacked seedling raising, which is used to grow mat-shaped seedlings. Up to 30 seedling boxes that have been sown are stacked up to 30 and allowed to germinate in an environment of appropriate temperature and humidity. The process involves transshipping the seeds to other plants and growing them further.

In addition, the work of stacking up to 30 seedling boxes after sowing can be done manually or by machines (for example, Japanese Patent Application Laid-Open No. 63-71025
Publication No.).

[Problem to be solved by the invention]

Now, considering the process from seeding to stacking, as shown in the above cited example, the sowing process can be carried out while continuously feeding the seedling boxes on a belt conveyor, etc., so the work efficiency is relatively high. It has become a thing.

However, when stacking the seedling boxes after sowing is done manually, the worker must pick up the boxes one by one and carry them to the stacking position, which is time-consuming. The process becomes cumbersome and requires a large number of personnel due to low work efficiency.

In addition, when this stacking process is performed by a machine as in the above-mentioned reference, not only the stacking device in this reference but also a machine that performs stacking mechanically, stacks the seedling boxes with the lateral movement stopped. Since this operation must be performed, there is a problem that the number of stacking operations cannot be increased.

To explain this inconvenience specifically, the seedling nursery box is filled with soil after sowing, so if the movement of the seedling nursery box is stopped rapidly, the soil will become uneven inside the seedling nursery box. This is because the high-speed movement of the seedling box is obstructed. Therefore, it may be possible to provide a braking device that gradually reduces the moving speed of the seedling nursery box, but this would complicate the structure and increase the cost of the device. The current situation is that the speed at which the materials are sent to the stacking device has been significantly reduced.

Therefore, from the perspective of resolving these inconveniences, it is conceivable to stack the seedling boxes in two layers before stacking the seedling boxes after sowing. It is assumed that the seedling boxes are stacked on top of each other by lifting and holding the seedling box upward and then dropping the upper seedling box at the timing when the next seedling box is sent to the position below this seedling box. In a structure that aligns seedling boxes, deviations to both sides of the feeding direction of the seedling box can be corrected using guides, etc., so the amount of deviation in this direction when stacked can be reduced, but the deviation along the feeding direction of the seedling box Since it is difficult to adjust the position in this direction, it may be difficult to suppress "shift" in this direction.

The purpose of the present invention is to provide a device that can improve the efficiency of the stacking process, whether manually or mechanically stack seedling boxes after seeding, and that can easily improve the stacking accuracy. The point lies in the rational structure.

[Means to solve the problem]

The first aspect of the present invention is characterized by a lifting mechanism that lifts and holds the seedling raising box after being sown, which is being transported horizontally, and a lifting mechanism that transports the next seedling raising box below the raised seedling box. A two-tier stacking system is constructed with a dropping mechanism that drops the lifted seedling-growing boxes at the same timing. It comprises a detection mechanism for detecting the amount of deviation, and a timing setting means for adjusting the lifting timing of the lifting mechanism or the falling timing of the dropping mechanism based on the detection result of the detection mechanism, and The features of the second invention include a lifting mechanism that lifts and holds the seedling raising box after being sown and being transported horizontally, and a mechanism for transporting the next seedling raising box below the raised seedling box by this lifting mechanism. A two-tiered system is constructed with a dropping mechanism that drops the lifted seedling box with the raised seedling box. and a timing setting mechanism that adjusts the lifting timing of the lifting mechanism or the falling timing of the dropping mechanism based on the detection result of the detection mechanism. , its action and effect are as follows.

[For production]

When the features of the first invention are configured as shown in FIGS. 1 to 5, for example, the detection mechanism (G) detects the amount of deviation of the seedling raising boxes (1), (1) after they are set in the overlapping state. After that, the timing setting means (H) adjusts the lifting timing of the lifting mechanism (E) so that this deviation is reduced.
Alternatively, the setting of the falling timing of the falling mechanism (F) is changed (in the embodiment, the falling timing is adjusted).

Moreover, when the feature of the second invention is configured as shown in FIG. 7, for example, the detection mechanism (G) detects the raised seedling box (1).
Based on the weight balance of the raised seedling box (
1) is deviated from the best lifting position, and the timing setting means (H) changes the setting of the fall timing of the raised seedling box (1). This makes it possible to reduce the amount of deviation of the seedling raising boxes (1), (1) after stacking, or to bring the timing of lifting the next raising seedling box (1) closer to the optimal lifting position. Become.

〔Effect of the invention〕

Therefore, there is almost no misalignment in the seedling boxes stacked in two layers.
This makes it possible to improve the efficiency of the stacking process, whether manually or mechanically stacking the seedling boxes after seeding, and also to improve the stacking accuracy relatively easily. The device was constructed rationally.

[First example] A first embodiment of the present invention will be described below with reference to the drawings.

Figure 6 shows a plant that performs everything from seeding to stacking, and the plant includes an elevator unit (2) that moves a group of seedling boxes (1g) stored in a stacked state to the working level. , 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 a two-tier stacking device (
B), two-tiered seedling growing boxes (1) sent from this two-tier stacking device (B) via a chain conveyor (5),
It consists of a stacking mechanism (C) that stacks (1) on a transport cart (6) until 30 sheets are stacked.

The seedling boxes (1) stacked in this plant are germinated 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 (l
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 (11),
(13), and the stacking mechanism (C) is fed with two-tiered seedling growing boxes (1);
(1) Lifting device (
14) and the seedling box that has reached the top of the lift device (14) (
1), (1) is transported to the stacking position in a horizontal position by a cross-feeding device (15), and a transport cart (6) at the stacking position.
) and an elevator (16) that supports the elevator (16) in a level-adjustable manner, and the two-tier stacking device (B) is constructed as follows.

In other words, as shown in FIGS. 1 to 5, this two-tiered stacking device (B) uses metal rollers (17a) to place the seedling box (1) and continuously transport it in the horizontal direction. a transport device (17) consisting of a plurality of main frames, an elevating frame (20) configured to be movable up and down while being guided by guide rods (19>) with respect to the main frame (I8); A double-acting type first air cylinder (21) that raises and lowers the lifting frame (20) and the lifting frame (20),
Guide rod (22).

The bottom wall (22) of the seedling growing box (1) on the transport device can be slid freely in the horizontal direction facing each other while being guided by (22), and moved in the direction approaching each other. The locking piece (23a) reaches the position overlapping with la).
A pair of double-acting second air cylinders that simultaneously slide the pair of slide members (23), (23) and a pair of slide members (23), (23) having
24), (24), a first sensor (25) that detects when the seedling box (1) has reached the lifted position, and a first sensor (25) that detects when the raised seedling box (1) has reached the position where the next seedling box (1) should be dropped.
1), and a second sensor (26) that detects when the seedling box (1), (1) has been set up in two tiers.
), the stacking mechanism (C)
3rd and 4th sensors (27) and (28) arranged vertically inside the air cylinder, a control device (29) into which signals from each sensor are input, and a first and second air cylinder (21). ), (24), and an air supply device (D) that supplies air to (24), and in this device, the first air cylinder (21) is is extended, and the second air cylinders (24) and (24) are contracted, and when the first sensor (25) detects the seedling box (1), the first air cylinder (21) is contracted. Locking piece (23a)・
・Lift and hold the seedling growing box (1) in a state where it is locked to the raised seedling growing box (1).
1) When the second sensor (26) detects that the seedling box (1) has reached the lower part, the second air cylinders (24) and (24) are extended to cause the seedling growing box (1) in the holding state to fall, and to reach the second level. It is designed to be stacked.

As shown in FIGS. 2 and 4, the first and second sensors (
25) and (26) are each configured in a non-contact type with light emitting parts (L), (L) and light receiving parts (S), (S), and the light receiving part (S) of the second sensor (26) is , position adjustment mechanism (30)
The third and fourth sensors (27),
(28) is a contact piece (27a), (28a) that comes into contact with the seedling raising box (1), (1), and this contact piece (27a).

Potentiometer (27b), (28
b).

Moreover, this control device (29) also controls the third and fourth sensors (27
), (28) In accordance with the amount of "shift" between the two stacked seedling boxes (1), (1) detected by the signals from each, the seedling growing boxes (1) are moved in the direction of reducing the amount of deviation. ), and the operation is performed by changing the setting position of the position adjustment mechanism (30).

In addition, in this two-tier stacking device, when the seedling growing box (1) is dropped, the lower seedling growing box (1) is moved by the rollers (17a).
・Third air sill (31) to float from
A wheel (32) that is raised and lowered by (31).

(32), and these wheels (32), (32) rise almost at the same time as the fall of the seedling box (1), so that the lower seedling box (1) can be moved to the upper seedling box (1). ) is designed to allow a temporary deceleration of the transport speed when the receiver stops.

In addition, the first, second, and third air cylinders (21).

(24), (31), the compressed air from the compressor (33) is connected to the pressure regulating valve (34), solenoid valve (35),
- The control device (29) operates the respective solenoid valves (35).

Furthermore, in the first embodiment, the first and second air cylinders (21
), (24) and the slide members (23), (23) are collectively referred to as a lifting mechanism (E), and the second air cylinder (24) and slide members (23), (23) are collectively referred to as a dropping mechanism. (F), the third and fourth sensors (27)
.

(28) is collectively referred to as the detection mechanism (G), and the control device (2
9) is referred to as timing setting means (H).

[Second example] A second embodiment of the present invention will be described below with reference to the drawings.

In the second embodiment, a plant that performs the entire process from seeding to stacking is configured in the same manner as in the first embodiment, and only the two-tier stacking device (B) is configured as shown in Fig. 7. .

In other words, the two-tier stacking device (B) consists of the locking pieces (23a), (23a) arranged at the front and rear positions, and the slide member (23a).
) between the strain gauge type weight sensor (40),
(40) (Example of detection mechanism (G)) By interposing the seedling raising box (1) in the lifted state, it is possible to determine how far the seedling raising box (1) is deviated from the optimal lifting position based on the weight balance of the raised seedling raising box (1). It is now possible to understand whether the

Further, the signals of the weight sensors (40) and (40) are input to the control device (29), and the control device (29) adjusts the position adjustment mechanism (30) of the second sensor (26) based on the signals.
By operating the seedling box (1), the seedling box (1) is dropped at an optimal timing corresponding to the amount of deviation of the lifted seedling box (1).

Components having the same functions as those in the first embodiment are given the same numbers and symbols as those in the first embodiment.

[Another example]

In addition to the first and second embodiments of the present invention, for example, the control system may be configured to adjust the timing of lifting by the lifting mechanism based on the detection result of the detection mechanism.

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]

1 to 6 show a first embodiment of a device for stacking two-tiered seedling boxes according to the present invention, FIG. 1 is a partially cutaway side view of the device, and FIG. 2 is a schematic plan view of the device. Figure 3 is a longitudinal sectional view of the device, Figure 4 is a side view showing the arrangement of the third and fourth sensors, Figure 5 is a block diagram of the control system, and Figure 6 is a side view of the seeding plant. Also, FIG. 7 is a partially cutaway side view of the two-tier stacking device in the second embodiment. (1) Seedling box, (E) Lifting mechanism, (F) Falling mechanism, (G)
...detection mechanism, (H) ...timing setting means.

Claims (1)

[Scope of Claims] 1. A lifting mechanism (E) that lifts and holds the seedling raising box (1) after sowing treatment, which is being transported horizontally, and a lifting mechanism (E) that lifts the seedling raising box (1) that is lifted by this lifting mechanism (E). 1) A two-tiered system is configured with a dropping mechanism (F) that drops the raised seedling-growing box (1) at the timing when the next seedling-growing box (1) is sent below, and is set to be two-tiered. a detection mechanism (G) that detects the amount of deviation in the feeding direction of each of the upper and lower seedling boxes (1) and (1) when A two-tier seedling box stacking device comprising timing setting means (H) for adjusting the lifting timing of a lifting mechanism (E) or the dropping timing of a dropping mechanism (F) based on the results. 2. A lifting mechanism (E) that lifts and holds the seedling raising box (1) after sowing that is being fed horizontally, and a lifting mechanism (E) that lifts and holds the seedling raising box (1) that is being transported horizontally, and a lifting mechanism (E) that lifts the seedling raising box (1) that is lifted by this lifting mechanism (E). A two-tiered system is constructed with a dropping mechanism (F) that drops the raised seedling growing box (1) at the timing when the raised seedling growing box (1) is sent, and a lifting mechanism (E) to drop the raised seedling growing box (1). A detection mechanism (G) that detects the amount of deviation of the seedling raising box (1) in the feeding direction based on the weight balance of the box (1), and a detection mechanism (G) that detects the amount of deviation in the direction along the feeding direction of the seedling raising box (1), based on the detection result of this detection mechanism (G). A two-tier seedling box stacking device comprising a timing setting mechanism (H) that adjusts the lifting timing of a lifting mechanism (E) or the dropping timing of a dropping mechanism (F).