JPH0427870Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention provides a seedling box carrier that constitutes a seeding device.
This invention relates to an improved seedling box feeding device that automatically and continuously supplies empty seedling boxes to be accommodated in a seedling box storage frame in sequence starting from the lowest one.

[Prior art]

As a device targeted for improvement of this invention,
There is a seedling box feeding device shown in FIG. 5 of Japanese Patent No. 50-13770. This device has a seedling box storage frame erected above the starting end of the seedling box carrier that constitutes the seeding device, or on top of a separate carrier that is connected to the upper side of the seedling box carrier. At the lower part of the opposite sides of the storage frame, horizontally enter and exit under the side edge of the lowest seedling box stored in this seedling box storage frame and the side edge area of the next seedling box, and A pair of upper and lower holders are provided which alternately interlock and engage with the lower surfaces of the side edges of the upper and lower seedling boxes. In the center between the outer ends of the upper and lower holders, a rotating shaft that rotates in response to the seedling box supply enable signal is installed, and the central portion of a straight rod-shaped lever is fixed to this rotating shaft. In the upper and lower portions of the receiver, elongated guide holes are formed in the longitudinal direction of the lever, and pins provided on both of the holders are inserted into and engaged with the elongated guide holes.

[Problem that the invention attempts to solve]

(a) There is no problem if one of the holders moves out of the seedling box due to the reciprocating rotational movement of the lever, but if the stroke of the holder moving toward the box is due to the interaction between the guide slot and the pin, there is no problem. Since it is set by an engagement relationship, if the width or length of the seedling box changes, the seedling box may not be able to be supported due to the setting stroke of the holder that enters, or
If the stroke is larger than the gap between the inner surface of the storage frame and the side of the seedling box, the side wall of the seedling box will be pressed too hard, resulting in damage to the seedling box, or
This may overload the operating mechanism that is rigidly connected to the holder, causing damage to it.

(b) When the tips of the upper and lower holders are on the same vertical line, the tips of both holders are not engaged with the side edges of the seedling box, so the seedling box cannot be held or released accurately.

(c) Since the seedling box storage frame has a one-piece structure, it cannot accommodate changes in the size of the seedling box, and can only handle seedling boxes with limited dimensions.

(d) Since the device is designed to hold the longitudinal side walls of the seedling box, it is necessary to provide many holding devices on one side, which complicates the structure.

In order to solve these problems, the applicant of the present invention proposed a seedling box feeding device having a mechanism as shown in FIG. According to this device, the problems of the prior art can be solved, but when the seedling box storage frame 40 is set in a seedling box whose length is slightly short in the transport direction of the seedling box, as shown in FIG. If a seedling box 41 with a slightly long length is set, or if such seedling boxes are mixed together, the upper seedling box receiving plate 42a provided on the upper side may be separated from the side edge 41a of the seedling box 41. Before it comes out, lower seedling box receiving plate 4
As a result, the tip of the seedling box 2b supports the bottom surface of the seedling box 41, making it impossible to drop and supply the seedling box 41. For this reason, in the prior art, it is necessary to configure the seedling box storage frame 40 on the upper side to be movable and adjustable with respect to the machine frame.
Furthermore, this adjustment operation also affects other mechanisms, making it relatively complicated.

[Means for solving problems]

The present invention was developed in view of the above circumstances, and it solves the problems of the conventional technology by simple and rational means, and provides a pair of upper and lower retainers that alternately interlock and engage with the lower surface of the side edge of the seedling box. Not only can the lowermost seedling box be fed onto the seedling box carrier intermittently by the tool, but also when one of the holders moves out from under the side edge area of the seedling box, the rotation plate When the other holder enters the side edge area of the seedling box by engaging with the end of the guide slot provided in the seedling box, it is forced out by the biasing force of the elastic body regardless of the guide slot. This ensures that the seedling box and the operating mechanism are not damaged at all, and that one of the holders is always under the side edge area of the seedling box, ensuring reliable seedlings. Boxes can be fed continuously, and even if the length of the seedling box changes slightly, there is no need to move the seedling box storage frame.
The present invention aims to provide a device that can be solved by adjusting only the adjusting screw, and the structure of the present invention that solves the problems of the conventional technology is to A seedling box storage frame is erected on the upper part of the conveying body which is connected and placed separately on the upper side of the transport body, and this seedling box storage frame is placed on the upper side of the transporting upper side of the seedling box storage frame and at the lower part of the lower side of the seedling box storage frame. It enters and leaves horizontally under the side edge of the lowest seedling box stored in the seedling box storage frame and the side edge area of the next seedling box, and alternately touches the lower surface of the side edge of the upper and lower seedling boxes. In the seedling box feeding device, which is provided with a pair of upper and lower holders that interlock and engage with each other, and intermittently supplies seedling boxes from the lowest one onto the seedling box carrier or a separate carrier, A rotating plate is provided between the outer ends of the upper and lower holders to rotate back and forth by a rotating shaft provided in the center between the holders. A guide elongated hole is formed, and the outer ends of the upper and lower holders are movably engaged with the guide elongated hole, and elasticity is applied to the upper and lower holders to constantly urge the holder toward the seedling box. A holder is provided at right angles to the outer surface of the upper side storage frame 3b constituting the seedling box storage frame 3 on a holder that engages with the lower surface of the side edge of the lowermost seedling box provided on the upper side of the seedling box to be transported. Abutting adjustment screws are screwed so that when the tips of both holders are on the same vertical line, the tips of both holders are engaged with the side edge of the seedling box. It is something.

〔Example〕

The details of the embodiments will be explained with reference to the drawings.

Figure 1 is a plan view, Figure 2 is a partially cutaway front view of the lowermost seedling box supported, Figure 3 is a partial front view of the lowermost seedling box released, and Figure 4 is the lower side of the seedling box being transported. Partially cutaway front view of the main part of the lowermost seedling box in the supported state,
Figure 5 is a partially cutaway front view of the main part with the ends of the upper and lower holders aligned in the vertical direction, and Figure 6 is a front view of the main part of the lowermost seedling box supported on the upper side of the transport of the seedling box. FIG. 7 is a partially cutaway front view of the upper and lower holders aligned in the vertical direction.

Reference numeral 1 denotes a seedling box carrier that constitutes a seeding device (not shown), and a machine frame 2 that horizontally supports the seedling box carrier 1.
A seedling box storage frame 3 is erected at the upper part of the upper side of the seedling box, and is constituted by two storage frames 3a and 3b that face each other and have a U-shaped planar shape. The storage frame 3a on the lower side is fixed to the machine frame 2, and the storage frame 3b on the upper side is fixed in the front-rear direction, that is, in the left-right direction in the paper of FIG. The seedling box storage frame 3 is configured so that its movement can be adjusted and can accommodate large variations in the length of the seedling boxes 6 used. Further, on the inner surface of one side wall of the lower side storage frame 3a, as shown in FIG.
In addition, seedling box guides 8b, 8c, which have the same structure,
8d are attached to the inner surface of one side wall and the inner surface of the upper side wall of the upper side storage frame 3b, respectively, so that the gap between the seedling box storage frame 3 and the seedling box 6 accommodated therein can be finely adjusted. This is what I did.

Horizontally long slit-shaped guide holes 9a, 9b are formed in the lower center portions of the side walls 3a, 3b of the storage frames 3a, 3b, more specifically, the side walls 3c, 3d corresponding to the short sides of the seedling box 6, at the upper and lower sides with a required interval. The guide holes 9a and 9b are provided in two stages, and guide pieces 10a and 10b that protrude horizontally outward are formed at the lower sides of each of the guide holes 9a and 9b, respectively. As is clear from FIGS. 1 and 2, each of the guide holes 9a and 9b has an opening from the bottom of the seedling box 6 housed in multiple stages in the seedling box storage frame 3 to the upper guide hole 9a. A holder, that is, a seedling box receiving plate 11a that engages with the lower surface of the side edge 6a of the second seedling box 6, and a lower guide hole 9b that engages with the lower surface of the side edge 6a of the lowest seedling box 6. The matching holder, that is, the seedling box receiving plate 11b is inserted so that it can be moved in and out.

Further, at the center of the outer edge of each seedling box receiving plate 11a, 11b, L-shaped engaging portions 12a, 12 are provided at the tips.
A continuous rod 12 having a shape b is provided. On the other hand, on the outside of the side walls 3c and 3d of both storage frames 3a and 3b,
As shown in FIG. 1, the seedling box receiving plates 11a, 1
Support frames 13 are attached to both sides of 1b. This support frame 13 is provided with a space between the upper and lower seedling box receiving plates 11a and 11b, and the storage frame 3.
A rotation axis 14 parallel to the side walls 3c and 3d of surfaces a and 3b
axially span as a bridge. A semicircular rotating plate 15 is concentrically fixed to this rotating shaft 14 so that the arcuate surface faces outward and the plate surface is perpendicular to the axis of the rotating shaft 14. The rotary plate 15 is formed with an arcuate long guide hole 16 whose radius is the distance between the center of the rotary shaft 14 and the center of the connecting rod 12, and the upper and lower ends of the long guide hole 16 are Knock pins 17 are attached to the ends of the engaging portions 12a and 12b of the connecting rod 12, respectively, to provide a locking structure. 18 is the rotation axis 1
4 is attached to the torsion coil spring 18, and both ends of the spring are locked to the engaging portions 12a, 12b of the connecting rod 12. Box storage frame 3
The seedling box is biased toward the inner seedling box.

The lower end of the upward lever 19 is attached to the rotation shaft 14 attached to the storage frame 3b on the upper side, and the upper end of the downward lever 20 is attached to the rotation shaft 14 attached to the storage frame 3a on the lower side. The upper end of the lever 19 and the lower end of the lever 20 are connected by an interlocking rod 22 having a turnbuckle mechanism 21 in the middle. The reason for providing the turnbuckle mechanism 21 is that when the upper storage frame 3b is moved back and forth due to a change in the length of the seedling box 6, the length of the interlocking rod 22 can be adjusted accordingly. be.

Reference numeral 23 denotes a mounting plate erected on the machine frame 2 on the lower side by means of a rotary plate 15 provided on the lower storage frame 3a. A shaft 24 facing the upper side of the seedling box 6 is fixed, and a lower end of this shaft 24 intervenes in the seedling box 6 that is conveyed in the downward direction by the seedling box carrier 1, and the seedling box 6 The upper end of the seedling box sensing lever 25, which rotates within a certain angular range, is rotatably pivoted by the edge of the lever. A torsion coil spring 26 is wound around the shaft 24, and the upper end of the torsion coil spring 26 is attached to the mounting plate 24.
In addition, the lower end is engaged with the lower side edge of the seedling box sensing lever 25, and this seedling box sensing lever 25
The rotational bias in the upper direction is applied to the upper side. In addition, 27 in the figure is the seedling box sensing lever 25.
This is a stopper that limits the biasing rotation of the. The seedling box sensing lever 25 has a two-piece structure, and its length can be adjusted by a long hole 28 and a tightening bolt 29, which is formed on the seedling box 6. It is adapted to suit the length of the side edge 6a. The middle part of the seedling box sensing lever 25 and the downward lever 20 are connected by an interlocking rod 30, so that the lever movement of the seedling box sensing lever 25 is transmitted to the downward lever 20 via the interlocking rod 30, Further, when the seedling box sensing lever 25 is in contact with the stopper 27, the seedling box sensing lever 25 maintains a substantially vertical posture, and at this time, the lower seedling box receiving plate 11a is moved as shown in FIG. As shown, it engages with the side edge 6a of the lowermost seedling box 6.

Furthermore, as shown in FIG. 5, when the tips of the upper and lower seedling box receiving plates 11a and 11b are on the same vertical line, the tips of the seedling box receiving plates 11a and 11b are both on the side edge 6a of the seedling box 6. The lengths of the seedling box receiving plates 11a and 11b are determined so that they are in an engaged state.

In addition, the distance between the rear end of the storage frame 3a on the lower side and the mounting position of the seedling box sensing lever 25 is made shorter than the length of the seedling box 6, and the fast forwarding roll 1, which will be described later, is By providing it below, the front part of the seedling box 6 to be released rides on the rear of the preceding seedling box 6, so that the seedling boxes 6 can be operated while maintaining a contact relationship without separating from each other. This is what I did.

In the figure, reference numeral 31 denotes a rapid feed roll for increasing the initial speed of the seedling box 6, which is provided below the seedling box storage frame 3. Further, 32 is a guide roll of the conveyor belt 33;
is a forced feed roller for the seedling box provided slightly above the seedling box sensing lever 25. Also, the first
As shown in the figure, a plurality of recesses are formed at the tip of each seedling box receiving plate 11a, 11b, but some seedling boxes have ribs, so the ribs can intervene in the recesses. This is what I did.

The front end of the lower seedling box receiving plate 11b constituting the upper side holder is bent downward at a right angle as shown in the figure to form a mounting piece 11c, and the seedling box receiving plate 11b is attached to the mounting piece 11c. Adjustment screw parallel to the surface 3
5 are screwed together so that they can move forward and backward, and the tip of the adjusting screw 35 is made to abut perpendicularly to the outer surface of the side wall 3d of the upper storage frame 3b. Furthermore, in the above embodiment, the seedling box carrier 1 is shown having a seeding device, but this device may be provided on a carrier (not shown) that is connected to the upper side of the seedling box carrier 1. It is not specific to the example.

[Effect]

Next, the operation of the above embodiment will be explained.

In the state shown in FIG. 2, when the empty seedling box 6 is manually placed on the conveyor belt 33 at the beginning of the work, the seedling box 6 is rapidly conveyed to the lower side by the action of the fast-forwarding roll 31. Ru. This seedling box 6, being sandwiched between the forced feed roller 34 and the guide roll 32, hits the seedling box sensing lever 25 which maintains a vertical posture, and moves this lever in the downward direction, that is, in the third position.
Rotate as shown in the figure. This movement is the interlocking rod 3
0, a semicircular rotating plate 1 that is transmitted to the front and rear rotating shafts 14 via a downward lever 20, an interlocking rod 22, and an upward lever 19, and is fixed to this rotating shaft 14.
5 rotates as shown in the figure.

By this rotation of the rotating plate 15, the lower end of the arc-shaped guide hole 16 allows the lower seedling box receiving plate 1 to be moved forward and backward.
1b outward to the side edge 6a of the lowest seedling box 6.
At the same time, the upper seedling box receiving plate 11a is pressed by the torsion coil spring 18, regardless of the guide slot 16, and the tip of the seedling box receiving plate 11a is moved in the direction of the seedling box 6. and engage the side edge 6a of this. With this operation, the seedling box 6 in the lowermost row is released onto the conveyor belt 33 as shown in FIG. When the lower side edge of the preceding seedling box 6 passes the seedling box sensing lever 25, the seedling box sensing lever 25 returns to the state shown in FIG. Board 11b
In this case, the tip of the adjusting screw 35 is connected to the side wall 3d of the storage frame 3b.
The other mechanisms are also in the state shown in FIG. 2, and this operation is repeated.

Further, in the present invention, when the tips of the upper and lower seedling box receiving plates 11a and 11b are on the same vertical line, as shown in FIG. Since the seedling box 6 is configured to be engaged with the edge 6a, even in this neutral state, the seedling box 6 is always engaged with the seedling box receiving plates 11a and 11b, and the stacking inside the seedling box storage frame 3 is prevented. There is no problem with seedling boxes falling all at once.

〔effect〕

As described above, the configuration of the present invention provides the following effects.

(a) It goes without saying that the seedling boxes stacked and stored in the seedling box storage frame can be released onto the conveyor in sequence starting from the lowest one; When the holder is removed, the holder is forcibly moved by the end of the guide slot provided in the rotating plate, and when the holder is engaged with the side edge of the seedling box, the guide slot is Regardless, it is performed only by the pressing force of the elastic body and the rotation of the rotating plate, so even if the rotation of the rotating plate becomes larger than necessary, the elasticity of the elastic body will only act greatly, and the conventional Mechanical force does not work as it does. Therefore, the seedling box and the operating mechanism will not be damaged.

(c) When the tips of the upper and lower holders are on the same vertical line, the tips of both holders are always engaged with the side edge of the seedling box. The side edge of the seedling box can be engaged with any of the holders, and unlike the conventional technology, the group of seedling boxes stacked in the seedling box storage frame does not fall all at once, It is possible to reliably supply the material onto the carrier.

(d) When a seedling box with a larger longitudinal dimension is stored in a seedling box storage frame adapted to a seedling box with a slightly smaller longitudinal dimension, or when seedling boxes with larger longitudinal dimensions are mixed, Without adjusting the length of the seedling box storage frame, the tip of the adjusting screw should touch the side wall of the storage frame at the position where the tip of the lower seedling box receiving plate provided on the upper side touches the side wall of the large seedling box. By simply adjusting this adjustment screw so that it hits the right position, it is possible to prevent the lower seedling box receiving plate from engaging with the bottom plate of the seedling box, as shown in Figure 8, and improve the feeding efficiency of the seedling box. Improvement can be measured.

[Brief explanation of the drawing]

Figure 1 is a plan view, Figure 2 is a partially cutaway front view of the lowermost seedling box supported, Figure 3 is a partial front view of the lowermost seedling box released, and Figure 4 is the lower side of the seedling box being transported. Partially cutaway front view of the main part of the lowermost seedling box in the supported state,
Figure 5 is a partially cutaway front view of the main part with the ends of the upper and lower holders aligned in the vertical direction, and Figure 6 is a front view of the main part of the lowermost seedling box supported on the upper side of the transport of the seedling box. Fig. 7 is a partially cutaway front view with the upper and lower holders aligned vertically, and Fig. 8 is a state in which the lowermost seedling box is supported on the upper side of the transport of the seedling box in the prior art. FIG. 1... Seedling box carrier, 2... Machine frame, 3... Seedling box storage frame, 3a, 3b... Storage frame, 6... Seedling box, 9
a, 9b... Guide hole, 10a, 10b... Guide piece, 11a, 11b... Seedling box receiving plate, 11c...
Mounting piece, 12a, 12b...engaging portion, 13...support frame, 14...rotation shaft, 15...rotation plate, 16...
...Guide slot, 18...Torsion coil spring, 19...
...Upward lever, 20...Downward lever, 21...
...Turnbuckle mechanism, 22... Interlocking rod, 23...
... Mounting plate, 24 ... Shaft, 25 ... Seedling box sensing lever, 26 ... Torsion coil spring, 27 ... Stopper, 30 ... Interlocking rod, 31 ... Rapid feed roll,
32... Guide roll, 33... Conveyor belt, 34
... Forced feed roller, 35 ... Adjustment screw.

Claims (1)

[Scope of Claim for Utility Model Registration] A seedling box storage frame is erected above the starting end of a seedling box carrier constituting a seeding device, or on top of a separate carrier that is connected to the upper side of this seedling box carrier. , the side edge of the lowest seedling box stored in this seedling box storage frame and the side edge of the next seedling box are placed at the bottom of the upper and lower sides of the seedling box that are opposite to each other when transporting the seedling box. A pair of upper and lower holders are provided that enter and exit horizontally under the side edge area and alternately interlock and engage with the lower surface of the side edge of the upper and lower seedling boxes,
In a seedling box feeding device that intermittently supplies seedling boxes from the lowest stage onto the seedling box carrier or a separate carrier, a holder is provided between the outer ends of the upper and lower holders. A rotating plate that reciprocates around a rotating shaft provided in the center of the space is provided, and an arc-shaped guide hole centered on the rotating shaft is formed in this rotating plate. The outer ends of the upper and lower holders are movably engaged with each other, and the upper and lower holders are provided with elastic bodies that always urge the holders toward the seedling box, and the upper and lower sides of the seedling box are provided with elastic bodies that always urge the holders toward the seedling box. An adjustment screw that abuts orthogonally to the outer surface of the upper side storage frame 3b constituting the seedling box storage frame 3 is screwed onto a holder that engages with the lower surface of the side edge of the seedling box at the lowest stage provided, and both of the above-mentioned holders are screwed. A seedling box feeding device characterized in that when the tips of the tools are on the same vertical line, the tips of both the holders are engaged with the side edges of the seedling box.