JPH06127668A - Automatic supply device for raising seedling box - Google Patents

Abstract

PURPOSE:To smoothly transfer each raising seedling box to an elevator and a supplier by reforming the inclination and the twisting of each seeding culture box piled up in multiple stages on a stock conveyor for a seedling box automatic supply device, and thereby reforming the raising seedling boxes into an upright position. CONSTITUTION:Correcting plates 25 which are so devised as to be opened upward by rotatably mounting each lower end of the corrective plates on each base 19 with each hinge 24, are arranged at both the sides of a conveyor 14. Wing plates 27 are rotatably attached to both the sides of the correcting plates 25 in such a way as to be opened/closed by means of hinges, and each correcting plate 25 and each wing plate 27 are energized by springs to an open condition. Short arms 32 for pressing each correcting plate and long arms 33 for pushing each wing plate are installed on driving shafts 16 quantitatively rotated by a geared motor as a drive source. When each raising seedling box 26 is detected by a sensor, a conveyor drive motor is suspended, concurrently the geared motor is quantitatively operated, and each correcting plate and each wing plate are pressed down by the long and short arms 32 and 33, so that the attitude of the raising seedling box is thereby corrected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling raising box automatic feeding device for feeding seedling raising boxes to a sowing plant, and more particularly to a seedling raising device for correcting tilting and twisting of seedling raising boxes stacked on a stock conveyor. The present invention relates to an automatic box feeder.

[0002]

2. Description of the Related Art As a seedling raising box automatic supply device for seedling raising facilities,
Stock conveyor 1 arranged on the upper floor as shown in FIG.
And the elevators 3 that are stacked on the stock conveyor in dozens of stages and that lower the nursery boxes 2 that were transported by the stock conveyor 1 downstairs, and the nursery boxes 2 that were unloaded by the elevator 3 are installed one by one downstairs. A type consisting of a feeder 5 that feeds the conveyor 4 of the seeding plant, a stock conveyor is installed in front of the conveyor of the seeding plant via the feeder, and one seedling raising box carried by the stock conveyor is fed by the feeder. A type that supplies to a conveyor of a single seeding plant is known.

As shown in FIG. 2, the nursery box 2 has a base 2a at the bottom.
When the seedling raising boxes 2 are stacked so as to project, the table 2a is designed to fit in the seedling raising box 2, but since there is considerable play in the fitted state, the boxes shift when stacked, and dozens of stages. If they are overlapped with each other, the displacement may become large and they may be tilted or twisted (see FIG. 9), which may cause trouble in transferring to the elevator 3 or the feeder.

[0004] Therefore, conventionally, the inclination and rubbing of the nursery boxes stacked on the stock conveyor are visually determined, and when it is determined that there is an inclination or twist that interferes with the placement of the raising box, the straightening is performed manually. I was trying to fix it.

[0005]

SUMMARY OF THE INVENTION The present invention is intended to save labor in this kind of work by providing a straightening device capable of straightening and tilting the seedling raising boxes stacked on the stock conveyor.

[0006]

The automatic nursery box feeder of the present invention is provided on both the left and right sides of the stock conveyor in the automatic nursery box feeder provided with a stock conveyor for transporting the nursery boxes in a stacked state. The corrective plate that opens and closes in the direction orthogonal to the direction of travel of the conveyor and sandwiches the nursery boxes stacked in multiple stages on the conveyor from both the left and right sides, and the wing plates that are openably supported on both sides of each corrector plate and the corrective plate that opens and closes. A first actuating device for causing the blades to open and close, and a second actuating device for opening and closing the vane, a straightening device, a sensor for detecting when the nursery box conveyed by the stock conveyor reaches a predetermined position, and a sensor Is provided with a control device for stopping the stock conveyor and operating the first and second actuating devices based on the output signal of.

According to the present apparatus, when the sensor detects the seedling raising box conveyed by the stock conveyor, the control device immediately stops the drive of the stock conveyor after the detection signal, or after a certain time elapses, or At the same time, the first and second actuating devices are operated to close the correction plate, and the nursery box is sandwiched from the left and right to correct the left and right inclinations,
At the same time or before and after this, the wings are closed and the nursery box is sandwiched from the front and back to correct the front and back inclination.

The straightening plate in this apparatus may be slidably supported by the guide rails and move in parallel, but preferably, the lower end is pivotally attached to the base by a hinge so as to be orthogonal to the traveling direction of the conveyor. It can be opened and closed in any direction. Similarly, the wing plate may be supported by the straightening plate so as to be slidable in the traveling direction of the conveyor, but is preferably pivotally attached to the straightening plate by a hinge.

The structure in which the straightening plate and the wing plate are pivotally attached by a hinge is simpler in structure than the slidable support, and the opening / closing operation is smooth, and the straightening plate is pressed from the lower side. There is an advantage that less correction is required. The first and second actuating devices are, respectively,
For example, an air cylinder, a link mechanism that operates using a motor as a drive source, a spring that urges the straightening plate or vane in the opening direction, and a motor that rotates as a driving source to turn the straightening plate or vane against the action of the spring. It is possible to exemplify a thing which consists of a pushing and moving arm, and although each 1st and 2nd actuating device can also be comprised so that each may operate independently independently, Preferably, a drive source, such as a motor, is included. It is desirable to make most of the mechanisms common. For this purpose, for example, a mechanism in which long and short arms having different lengths are fixed to a drive shaft that rotates a certain amount using a motor as a drive source may be adopted. Figure 3
Also, as shown in FIG. 4, the lower end of the straightening plate 6 is hinged to the table by a hinge 7.
The wing plate 8 is hinged to the straightening plate 6 while being pivotally attached by
In the type in which the straightening plate 6 and the vane 8 are closed, the difference between the momentums at the free ends of the long and short arms 11 and 12 that rotate by a certain amount by the drive shaft 10 can be used. become.

In another device, a first straightening plate which is arranged on both left and right sides of the stock conveyor, opens and closes in a direction orthogonal to the traveling direction of the stock conveyor, and sandwiches the nursery boxes stacked in multiple stages on the conveyor from the left and right sides, A second straightening plate, which is arranged on the stock conveyor so as to move up and down and can be opened and closed in the traveling direction of the stocker, and which sandwiches the nursery boxes stacked on the conveyor from the front and back, and the first and second opening and closing first and second straightening plates. 2 operation device, and a sensor that detects when the nursery box conveyed by the stock conveyor reaches a predetermined position,
The control device stops the stock conveyor based on the output signal from the sensor and operates the first and second actuating devices.

INDUSTRIAL APPLICABILITY The present invention is applied to a three-dimensional type automatic nursery box feeder for arranging a stock conveyor on the floor and lowering the nursery boxes conveyed by the stock conveyor to the downstairs by an elevator. It can be applied to an automatic feeder for feeding seedling raising boxes of a type that feeds the seedling raising boxes one by one to the conveyor of the sowing plant.

[0012]

FIG. 5 and FIG. 6 show a straightening device 13 according to the present invention.
In a box-shaped frame 15 installed so as to straddle the stock conveyor 14, a drive shaft 16 is provided at an upper portion and a chain transmission device 17 is provided at a lower portion from the drive shaft 16.
Guide cams 18 composed of eccentric cams that rotate through the shafts are symmetrically supported and axially supported, and are supported slidably in a direction orthogonal to the traveling direction of the conveyor 14.
9 is moved forward and backward in the direction of the arrow in FIG. 5 by the rotation of the guide cam 18.

Each of the left and right drive shafts 16 uses a geared motor 21 installed on the upper side of the frame as a drive source and rotates in opposite directions via a gear transmission 22 and a chain transmission 23. There is. The base 19
The hinge 24 makes it possible to open and close by pivoting the hinge 24, and by closing it upward, the seedling raising boxes 26 stacked on the conveyor 14 are sandwiched while being pressed from below in a direction orthogonal to the traveling direction of the conveyor 14, and by the hinge 24. Straightening plate 25 supported so that it does not open more than a certain amount in the opening direction
Has approximately the same width as the nursery box 26 as shown in FIG.
Blades 27 are pivotally attached to both sides by hinges 28. This wing plate 27 can also be closed only in the direction in which the nursery box 26 is sandwiched, and the hinge 28 prevents it from opening beyond a certain amount. Then, as shown in FIG. 7, each blade 27 is always held in the open state by the spring 29, and the correction plate 25 is also always pulled by the spring 30 in the direction of the arrow in the drawing to the open position shown by the solid line in FIG. It is supposed to be retained.

The drive shaft 16 has a short arm 32 for pressing the correction plate in the center, and long blades 33 for pressing the blades on the same plane at positions corresponding to the blades 27 on both sides thereof. The pair of rollers 34 is pivotally attached to the free end of the short arm, and the free end of the long arm is formed by bending back and forth in the above plane. Reference numeral 36 in FIG.
Is a sensor composed of a light emitting portion and a light receiving portion arranged on both sides of the conveyor 14, and when the light receiving portion is blocked from passing through the nursery box 26, a detection signal is output to a control device (not shown), and the control device When a certain time has elapsed since the detection signal was input, the control circuit of the conveyor drive motor (not shown) is turned off, the motor is stopped for a certain time, and the geared motor with brake 21 is operated by a certain amount. ing.

The present apparatus is constructed as described above, and the inclination or twist of the nursery boxes stacked on the conveyor and conveyed is corrected as follows. When the seedling raising box 26 conveyed by the conveyor 14 blocks the light receiving portion of the sensor 36 and the sensor 36 detects this and outputs it to the control device, the control device stops the conveyor driving motor after a certain period of time.

When the conveyor 14 is stopped, the nursery box 26 reaches the correction device shown in FIG. Then, the geared motor with brake 21 is activated. Geared motor with brake 2
The operation of No. 1 is carried out by a certain amount, which causes the gear transmission 22
The left and right drive shafts 16 rotate in opposite directions by a certain amount via the chain transmission 23, and the long and short arms 32 and 33 are rotated.
Is rotated inward by a certain amount, and the guide cam 18 is also rotated by a certain amount from the drive shaft 16 via the chain transmission device 17 to advance the table 19 inward by a certain amount.

When the long and short arms 32 and 33 rotate inward, the short arm 32 first moves the spring 30 to the upper side of the correction plate.
After aligning the seedling raising box 26 in the left-right direction against the action of, the long arm 33 pushes the blades 27 inward against the action of the spring 29 to align the seedling raising box 26 in the front-rear direction. That is, the rotation of the short arm 32 causes the roller 34 to hit the straightening plate 25 and push the straightening plate 25 inwardly to correct the tilt and twist of the seedling raising box 26 in the left-right direction, and then the long arm 33 is rotated. The curved portion at the end of the long arm hits the vane 27 and pushes the vane 27 inward to correct the tilt and twist in the front-rear direction of the seedling raising box 26 and straighten it.

As the table 19 advances inward by a certain amount, the lower end of the straightening plate also moves inward by a certain amount, but the lift of the guide cam 18 is small and the amount of forward movement of the lower end of the straightening plate is pushed in by the upper end. Small compared to the amount. Therefore, at the time of correction, the seedling raising box 26 is gradually pushed from below by the right and left correction plates 25, and the posture thereof is corrected. The alternate long and short dash line in FIG. 6 shows a state in which the seedling raising boxes 26 stacked on the conveyor are pressed by the correction plate 25 and the blades 27.

After the geared motor 21 is operated by a certain amount to correct the posture of the seedling raising box 26, the correction plate 25 and the wing plate 2 are used.
By the action of the springs 29 and 30, 7 opens while rotating the long and short arms 32 and 33 in the outward direction (the solid line position in FIG. 5) opposite to the above, and returns to the original position. Along with this, the guide cam 18 also rotates and the table 19 is retracted to return the lower end of the straightening plate to the original position.

The above-described operation is performed during the fixed time when the conveyor 14 is stopped, and when the fixed time elapses, the conveyor driving motor is activated again to drive the conveyor 14. FIG. 9 shows a state where the tilted or twisted seedling raising box 26 has its posture corrected by the correction device.

In the above embodiment, the seedling raising boxes 26 stacked on the conveyor are always pushed by the straightening plate and the wing plate of the straightening device regardless of whether or not they are tilted or twisted. It is also possible to perform correction by the correction device only when there is a certain amount of inclination or twist. For that purpose, the above-mentioned sensor 36 may be arranged vertically along the direction orthogonal to the conveyor and the traveling direction of the conveyor. When the deviation of the light shielding at the upper and lower light receiving parts reaches a certain amount or more, it is determined that there is a certain amount of inclination or twist, and the correction device is operated.

[0022]

The present invention is constructed as described above and has the following effects. According to the apparatus according to any one of claims 1 to 4, it is possible to correct the inclination and twist of the seedling raising boxes stacked on the conveyor so as to have a straight posture, and to save the labor of the correction work which is conventionally performed manually. You can

In the apparatus according to the second aspect, the mechanism for opening and closing the straightening plate and the wing plate can be simplified to make the opening and closing operation smooth, and the straightening plate is pressed against the seedling raising box from below. As a result, the force required for correction can be reduced. In the device according to claim 3, the first
Since most of the mechanisms of the second actuating device are common, the structure can be made simpler.

According to the apparatus of claim 5, the sensor can detect the tilt and twist of the nursery boxes stacked on the conveyor, and the correction device is operated only when the tilt or twist of a certain amount or more is detected. The posture of the nursery box can be corrected.

[Brief description of drawings]

FIG. 1 is a schematic view of a three-dimensional type automatic nursery box feeder.

FIG. 2 is a view showing a state in which seedling raising boxes are stacked.

FIG. 3 is a diagram showing a state in which a correction plate and a wing plate are opened.

FIG. 4 is a view showing a state in which the correction plate and the wing plate are closed and the seedling raising box is pressed down.

FIG. 5 is a front view of the correction device according to the present invention.

FIG. 6 is a side view of the device.

FIG. 7 is a plan view showing a state in which a correction plate and a wing plate of the apparatus are opened.

FIG. 8 is a plan view showing the closed state.

FIG. 9 is a schematic view showing a nursery box corrected by the device.

[Explanation of symbols]

14 ... Stock conveyor 15 ... Frame 16 ... Drive shaft 17, 23 ...
・ Chain transmission device 18 ・ ・ ・ Guide cam 19 ・ ・ ・ Table 21 ・ ・ ・ Geared motor with brake 25 ・ ・ ・ Correcting plate 26 ・ ・ ・ Nursing box 27 ・ ・ ・ Wing plate 29, 30 ・ ・ ・ Spring 32 ・..Short arm 33 ... Long arm 34 ... Roller 36 ... Sensor

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Tadashi Tanimoto 739-6 Yamate, Yoshida-cho, Takada-gun, Hiroshima Prefecture Keibunsha Co., Ltd.

Claims (5)

[Claims] 1. An automatic nursery box feeder comprising a stock conveyor for transporting the nursery boxes in a multi-tiered state, wherein the conveyors are arranged on both left and right sides of the stock conveyor and opened and closed in a direction orthogonal to the traveling direction of the conveyor. A straightening board that sandwiches the nursery boxes stacked in multiple stages on the left and right sides,
A vane that is openably and closably supported on both sides of each straightening plate, a first operating device that opens and closes the straightening plate, and a second opening and closing device that opens and closes the vane.
And a sensor for detecting when the nursery box conveyed by the stock conveyor reaches a predetermined position, and the stock conveyor is stopped based on the output signal from the sensor. And a controller for operating the second actuator, which is an automatic feeder for raising seedling boxes. 2. The straightening plate has a lower end pivotally attached by a hinge and can be opened and closed in a direction orthogonal to the traveling direction of the conveyor, and vanes are pivotally attached by hinges on both sides thereof.
Automatic nursery box feeder described. 3. A spring for urging the straightening plate and the vane in the opening direction is attached to the straightening plate and the vane, and a drive shaft which rotates using a motor as a drive source is provided for pushing the straightening plate. 3. The automatic nursery box feeder according to claim 2, wherein the short arm and the long arm for pressing the blade are attached. 4. An automatic nursery box feeder having a stock conveyor for transporting the nursery boxes in a multi-tiered state, wherein the stocker conveyors are arranged on both left and right sides of the stock conveyor and opened and closed in a direction orthogonal to the traveling direction of the conveyor. The first straightening plate that sandwiches the nursery boxes stacked on top of each other from the left and right sides, and the second straighter plate that sandwiches the nursery boxes stacked on the conveyor from the front and the back so that they can be opened and closed on the stock conveyor and opened and closed in the traveling direction of the conveyor. Straightening plate, first and second actuating devices for opening and closing the first and second straightening plates, a sensor for detecting when a nursery box conveyed by a stock conveyor reaches a predetermined position, and a sensor And a control device for activating the first and second actuating devices while stopping the stock conveyor based on an output signal from Automatic box feeder. 5. The automatic nursery box feeder according to claim 1, wherein the sensors are vertically arranged along a direction orthogonal to the conveyor and a traveling direction of the conveyor.