JP2019083752A - Soil-packing device of raising seedling box - Google Patents

Abstract

To prevent the occurrence of inconvenience that culture soil jumps out from a raising seedling box when soil-packing culture soil in a pot at the tip of the raising seedling box.SOLUTION: A soil-packing device 4 is so formed that: culture soil is filled in a large number of aligned pots 51; for a raising seedling box 50 conveyed in one direction along a conveyance passage, the bottom face of the raising seedling box 50 is supported with a feed roller 11 arranged below the conveyance passage; and culture soil filled in the raising seedling box 50 is soil-packed with a soil-packing roller 12 arranged at the upper side of the conveyance passage and just above the feed roller 11. The feed roller 11 is rotatably supported to a feed roller shaft 21 rotatably driven in an opposite direction to the soil-packing roller 12, and is interposed with a ratchet mechanism 22 between itself and the feed roller shaft 21. The ratchet mechanism 22 is formed so as not to invert the feed roller 11 with respect to a rotation drive direction of the feed roller shaft 21.SELECTED DRAWING: Figure 2

Description

  TECHNICAL FIELD The present invention relates to a pressure reducing device for a growing box, which suppresses the culture soil filled in the growing box.

  As a conventional pressure reducing device for a nursery box, one provided in a sowing machine described in Patent Document 1 is exemplified. In this seeding machine 100, as shown in FIG. 5, working steps of putting in soil, mass cutting, earth holding, seeding, soil covering, mass cutting, earth holding in a nursery box 50 (plastic pot tray) conveyed in one direction Are configured to sow seeds S. Each earth holding | maintenance in this sowing machine 100 is performed by the crushing apparatus 101A, 101B. In the pressure reducing devices 101A and 101B, the earthing roller 102 and the guide roller 103 are disposed above and below the conveyance path. Then, the soil C in the pot 51 of the nursery box 50 is squeezed by the earth holding roll 102. At this time, the bottom surface of the growing box 50 is supported by the cylindrical guide roller 103 provided immediately below the soil pressure roll 102, so that the soil C can be stably suppressed.

Japanese Patent Laid-Open No. 9-296170

  However, since it is necessary to form the deep hollow which puts the seed S in the pot 51, it is necessary to suppress the medium C in the pot 51 strongly for the suppression apparatus 101A for holding down before sowing. Therefore, as shown in FIG. 6, in this pressure reducing device 101A, the tip of the nursery box 50 enters (the same figure (a)-(b)), and the moment the bottom of the pot 51 of the tip gets over the guide roller 103 In addition, when the pot at the tip of the inserted earth is pressed by the earth holding roll 102, the tip of the nursery box 50 is bent downward, and the guide roller 103 is momentarily reversed ((c) in the figure). Immediately after that, along with the conveyance of the seedling-growing box 50 in the one direction, the guide roller 103 immediately returns to forward rotation (the same figure (d) to (e)). At the moment of returning to the normal rotation ((d) in the figure), there is a problem that the downward bending of the nursery box 50 is returned at once, and the medium C jumps out of the pot 51 due to the impact.

In order to solve the above-mentioned subject, the pressure control device of the nursery box of the present invention,
The growing soil is filled in a large number of arranged pots, and the bottom surface of the growing box is supported by a feed roller disposed below the conveying path with respect to the growing box which is conveyed in one direction along the conveying path. And a pressure reducing device for the seedling box configured to press the soil that has been filled in the seedling box by a pressure roller disposed on the upper side of the transport path and immediately above the feed roller,
The feed roller is rotatably supported on a feed roller shaft that is rotationally driven in the direction opposite to the pressure reduction roller, and a ratchet mechanism is interposed between the feed roller and the feed roller shaft.
The ratchet mechanism is configured not to reverse the feed roller in the rotational drive direction of the feed roller shaft.

  According to this configuration, since the feed roller is configured not to reverse by the ratchet mechanism, unlike the conventional method, when the soil is reduced in the pot at the tip of the seedling growth box, Does not fly out.

  The feed roller may be provided with a resistance means for resisting the rotation of the feed roller in the rotational driving direction of the feed roller shaft.

  According to this configuration, before the tip end of the seedling-growing box enters between the pressure reducing roller and the feeding roller, the gear can be reliably engaged with the pawl in the ratchet mechanism without loosening by the resistance means. And the reverse rotation of the feed roller can be reliably prevented.

  According to the pressure suppression device of the seedling box according to the present invention, the excellent effect of preventing the occurrence of the problem that the culture soil jumps out from the seedling box at the time of suppressing the soil in the pot at the tip of the seedling box is exhibited.

BRIEF DESCRIPTION OF THE DRAWINGS It is a sectional side view which shows schematic structure of the sowing machine containing the pressure-suppression apparatus of the nursery box concerning one Embodiment which actualized this invention. It is an enlarged side view of the pressure control device. It is a perspective view which shows the structure below the conveyance path in the same pressure control apparatus. It is a side view showing a series of operation examples of the pressure control device. It is a sectional side view which shows schematic structure of the planter which contains the suppression apparatus of the conventional growth box. It is a side view showing a series of operation examples of the pressure control device.

  1 to 4 show a sowing machine including a pressure reducing device for a nursery box according to an embodiment of the present invention. This seeding machine 1 is, as shown in FIG. 1, a nursery box feeding device (not shown), an earthing device 3, a pressure reducing device 4, a seeding device 5, a pressure suppressing device 6, and a soil covering device 7 on a rack. While being arranged in order along the conveyance direction of 50, and carrying the growing box 50 in one direction along the conveying path, the storage box 50 is filled with soil, pressed, seeded, pressed (barbed) and covered with soil. Is configured to perform continuously. In each of the drawings, the arrow F indicates the transport direction of the growing box 50 of the sowing machine 1.

  The nursery box 50 is made of a flexible resin, and the pot 51 forming a seedling chamber is formed in a grid shape along the length direction and the width direction of the outer peripheral shape in a plan view outer peripheral shape formed in a substantially rectangular shape. A large number of feed holes (not shown) for transferring the seedling box are arranged at the side edges extending in the longitudinal direction in accordance with the arrangement of the pots 51 in the longitudinal direction.

  As shown in FIG. 2 and FIG. 3, the pressure reducing device 4 supports the bottom surface of the nursery box 50 by the feed roller 11 disposed on the lower side of the transport path, and It is comprised so that the soil C which is filled with this raising seedling box 50 with the pressure reduction roller 12 arrange | positioned immediately above may be suppressed.

  The pressure reducing roller 12 has protrusions 12a arranged in a row on the outer periphery at a constant interval. It is configured such that the soil C in each pot 51 is suppressed by each projection 12 a and a depression for planting the seed S on the surface of the soil C is formed.

  The feed roller 11 is rotatably supported by a feed roller shaft 21 which is rotationally driven in the opposite direction to the pressure reducing roller 12, and a ratchet mechanism 22 is interposed between the feed roller 11 and the feed roller shaft 21. The ratchet mechanism 22 is configured not to reverse the feed roller 11 in the rotational driving direction of the feed roller shaft 21. Further, the feed roller 11 is provided with resistance means 23 for applying resistance to the rotation of the feed roller 11 in the rotational driving direction of the feed roller shaft 21.

  The ratchet mechanism 22 includes a gear 31 provided at the end of the feed roller 11 and a ratchet shaft 32 provided parallel to the feed roller shaft 21 so as to rotate integrally with the feed roller shaft 21 so as to prevent the reverse rotation. A pawl 33 rotatably supported by the ratchet shaft 32 between a position at which the teeth 31a of the gear 31 are locked and a position at which the teeth 31a are not locked, and the pawl 33 is biased to the locking position. And biasing means 34.

  The resistance means 23 is supported by a rotating shaft 36 extending in parallel to the feed roller shaft 21, a rotating body 37 rotatably supported by the rotating shaft 36, and a tip end of the rotating body 37. A resistance roller shaft 38 extending parallel to the shaft 21, a resistance roller 39 rotatably supported by the resistance roller shaft 38, and a peripheral surface of the resistance roller 39 are pressed against the peripheral surface of the feed roller 11. And a spring 40 as biasing means for biasing. By pressing the circumferential surface of the resistance roller 39 against the circumferential surface of the feed roller 11, resistance to the rotation of the feed roller 11 is added.

  Next, an operation example of the pressure suppression device 4 of this example will be described with reference to FIG. First, the tip of the nursery box 50 enters the pressure suppressing device 4 of the present embodiment (FIGS. 4A and 4B), and the bottom of the pot 51 at the tip comes into the ground at the moment when the bottom surface of the pot 51 rides on the feed roller 11. By pressing the pot 51 at the front end of the seedling roller with the pressure reduction roller 12, the front end of the nursery box 50 tries to curve downward, but unlike the conventional example, the feed roller 11 does not reverse, so the bending is prevented. (FIG. (C)). Even after that, the feed roller 11 continues to rotate in the forward direction along with the conveyance of the nursery box 50 in the one direction ((d) to (e) in the figure).

  As described above, in the pressure reducing device 4 of the growing box according to the present embodiment, the feed roller 11 is rotatably supported by the feed roller shaft 21 that is rotationally driven in the opposite direction to the pressure reduction roller 12. A ratchet mechanism 22 is interposed between the two, and the ratchet mechanism 22 is configured not to reverse the feed roller 11 in the rotational driving direction of the feed roller shaft 21. According to this configuration, since the feed roller 11 is not reversely rotated by the ratchet mechanism 22, the pressure reduction of the soil C in the pot 51 at the front end of the nursery box 50 is different from the conventional case. Culture soil C does not fly out of 50.

  In addition, since the resistance means 23 is provided which resists the rotation of the feed roller 11 in the rotational driving direction of the feed roller shaft 21, before the tip of the seedling raising box 50 enters between the pressure roller 12 and the feed roller 11. By the resistance means 23, the teeth 31a of the gear 31 and the pawl 33 in the ratchet mechanism 22 can be reliably engaged without loosening, and the reverse rotation of the feed roller 11 can be reliably prevented.

The present invention is not limited to the above embodiment, and can be appropriately modified and embodied as follows, for example, without departing from the spirit of the invention.
(1) Contrary to the above embodiment, the gear 31 of the ratchet mechanism 22 is provided on the feed roller shaft 21 side, and the pawl 33 of the mechanism is provided on the feed roller 11 side.
(2) Employing another known resistance means as the resistance means 23. For example, employing a means for pressing the friction resistant member against the surface (circumferential surface or side surface) of the feed roller 11 can be mentioned.

DESCRIPTION OF SYMBOLS 1 seeder 3 soiling device 4 soil pressure device 5 seeding device 6 soil pressure device 7 soil pressure device 11 feed roller 12 pressure roller 12 a protrusion 21 feed roller shaft 22 ratchet mechanism 23 resistance means 31 gear 31 a tooth 32 ratchet shaft 33 pawl 34 biased Means 36: Pivot shaft 37: Pivot 38: Resistance roller shaft 39: Resistance roller 40: Spring 50: Seedling box 51 pot C: Cultivated soil F: Conveying direction S: Seedling box

Claims (2)

A feed roller disposed below the conveyance path supports the bottom surface of the seedling box while conveying the growth box in which a large number of pots are arranged in one direction along the conveyance path, and the upper side of the conveyance path And a pressure reduction device for the nursery box configured to suppress the culture soil filled in the nursery box by a pressure reduction roller disposed immediately above the feed roller,
The feed roller is rotatably supported on a feed roller shaft that is rotationally driven in the direction opposite to the pressure reduction roller, and a ratchet mechanism is interposed between the feed roller and the feed roller shaft.
An apparatus according to the present invention, wherein the ratchet mechanism is configured not to reverse the feed roller in the rotational driving direction of the feed roller shaft.   2. The apparatus according to claim 1, wherein said feed roller is provided with resistance means for resisting the rotation of said feed roller in the direction of rotational drive of said feed roller shaft.

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