JPH0639837U - Nursery equipment - Google Patents

Abstract

(57) [Summary] [Purpose] In a device for stacking seedling raising boxes after sowing,
The point is to simplify the sensor structure. [Structure] A stop device 35 for receiving the seedling raising box 1 is provided at a site where the seedling raising trays 1 are stacked, and a swinging arm 29A type that is pushed down and swung by the seedling raising tray 1 stopped by the stop device 35 protruding from the transport surface. Detection sensor 2
9 is also used as a carry-out detection sensor that swings by carrying out the carry-out operation of the seedling raising box group 1A stacked in 30 stages and detects the carry-out state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention provides a transport device for transporting a seedling raising box, a stop device for switching the seedling raising seedling to a working state for stopping the seedling raising seedling in a stacking position, and a non-acting state for allowing movement of the seedling raising box, and the stop device for stopping And a stacking device for stacking the grown nursery boxes.

[0002]

[Prior art]

 After seeding in the nursery box, the nursery box is transported to the stacking position, the nursery box is stacked at that transport position for a certain amount, and after stacking, it is carried out from the stacking position and carried to the stacking position of the next nursery box. In order to perform a series of operations for preparing, the following proposals made by the applicant have been made. In other words, in Japanese Patent Application No. 4-104388, a stop detection sensor is provided to detect that the seedling raising box has been carried into the stacking position and is located at the stacking position. A sensor is provided, and the control device sets the stop device to the operating state so that the next seedling raising box is carried in to the stacking position based on the detection result of this carry-out detection sensor.

[0003]

[Problems to be solved by the device]

 In the case of the above configuration, the stop detection sensor and the carry-out detection sensor are provided separately, but there is still room for improvement in the configuration of these detection sensors. An object of the present invention is to provide a seedling raising apparatus that can simplify the device configuration by rational arrangement of detection sensors.

[0004]

[Means for Solving the Problems]

 The characteristic configuration according to the present invention is a stop device in the operating state, a stop detection sensor for detecting a state where the nursery box is stopped at the stacking position, and a predetermined amount of stacking when the stop device is in the non-operating state. This is because the seedling raising box group is also used as a carry-out detection sensor that detects a state where the seedling-raising box group is carried out from the stacking position toward the germination step. Its action and effect are as follows.

[0005]

[Action]

 In both of the two states, this detection sensor detects the nursery box stopped at the stacking position and the state where the stop device is inactive, the nursery box is the detection target of the sensor. Therefore, by providing a single sensor for detecting whether or not the nursery box is present at the stacking position, the sensor can detect the carry-in state and the carry-out state of the nursery box.

[0006]

[Effect of device]

 Therefore, the stop detection sensor and the carry-out detection sensor can be combined, and the control structure of the seedling raising device can be simplified accordingly.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a seedling raising box stacking device for stacking a predetermined number (30) of seedling raising boxes 1 after being seeded in a seedling raising plant is arranged, and 2 is a conveyer conveyor as a conveying device for the seedling raising boxes 1, 3 is a stacking device that pushes up the seedling raising boxes 1 and sequentially stacks them from below, and 4 is a trolley for carrying the stacked seedling raising box groups 1A and carrying them to a subsequent process such as a germination room. As shown in FIGS. 1 and 7, the transport conveyor 2 is composed of the first to fourth transport sections 2a, 2b, 2c, 2d from the upper side in the nursery box transport direction, and each has a dedicated power source. It is composed of a moving motor 5 and a large number of rotating rollers 6 so as to be independently driven. The transport conveyor 2 adopts the same drive structure for the first to third transport units 2a, 2b, 2c. The structure of the second transport unit 2b will be described. As shown in FIG. 7, two or three transport conveyors are used. Roller units 6 each having a roller 6a attached to a support shaft 7 are interlocked by a chain interlocking mechanism 8, and one of the support shafts 7 has a chain interlocking mechanism 8 in which an input sprocket 9 and an electric motor 5 are chained. It is linked. As shown in FIG. 1, the fourth transport unit 2d has the same structure as the first to third transport units including the electric motor 5 and the roller unit 6 on the slide base 16 movable in the direction orthogonal to the transport direction. It is configured to have a driving part, and functions to load the seedling raising group 1A on the carriage 4 by moving the slide base back and forth and moving the roller unit 6 left and right. The trolley 4 is for carrying a total of 4 groups of seedling raising box groups 1A stacked in 30 stages in the front, rear, left and right, and transporting them. Pack 1A of boxes and then carry it to the germination room. As shown in FIG. 12, the nursery box 1 is a resin molded product, and the bottom surface 1a is a transfer surface on which the roller unit 6 of the conveyor 2 is mounted, and a plurality of reinforcing ribs 1b are provided on the carrying section for carrying. 1c is formed on each of the front and rear ends of the side wall. Due to the structure in which the lower end edge of the side wall reinforcing rib 1b is located slightly above the bottom surface 1a, the seedling raising box 1 is formed in a stackable shape with upper and lower overlapping portions.

Next, the structure of the stacking device 3 will be described. As shown in FIGS. 3 to 5, the stacking device 3 includes a lift mechanism 10 that pushes the seedling-raising box 1 that has been transported to a predetermined position upward by a certain amount, and the seedling-raising box 1 that has been pushed up by the lift mechanism 10. It is composed of a support mechanism 11 that holds the lifted position. As shown in FIGS. 4 and 5, the support mechanism 11 is a pair of long-shaped members that can be simultaneously moved in and out of the mounting portions 1c on the left and right sidewalls of the nursery box 1 by horizontal sliding movement by the solenoid 13. It is composed of a joint piece 12 (see FIG. 12) (it may be an engagement piece 12 that can be moved back and forth by swinging movement), and the engagement piece 12 has a receiving posture (state of FIG. 5) protruding toward the nursery box 1 side. If there is, the seedling box 1 can be mounted and supported by mounting the mounting portion 1c on these protruding engagement pieces 12, and the engagement pieces 12 move outward and are in a retracted non-operating posture. In this case, the moving amount of the engaging piece 12 is set so as to allow the seedling raising box 1 to move in the vertical direction. The engagement piece 12 is supported by the slide movement guide 14 and driven by the solenoid 13 to move in and out integrally with the moving body 14A of the slide movement guide 14.

The lift mechanism 10 is composed of a flat plate-shaped lifting table 18, a rotary cam 19 for vertically moving the lifting table 18, and a geared motor 20. The lift table 18 is arranged between the roller units 6 and has a hole 18a for avoiding interference with the roller 6a located in the middle, and the arm frame 17 extends downward from the central portion of the lift table 18. At the lower end of the arm frame 17, a cam follower 21 that follows and contacts the rotating cam 19 is supported, and a guide mechanism 22 for determining the ascending / descending movement trajectory is provided before and after the ascending / descending table 18. As shown in FIG. 8, the guide mechanism 22 has a cylindrical shaft 24 supported by a conveyor frame 23 in which a guide shaft 25 attached to the lifting table 18 is fitted, and a receiving plate 25a at the lower end of the guide shaft 25 and a conveyor frame. A compression spring 26 is interposed between the No. 23 side and the No. 23 side. That is, the lift table 18 is biased downward by the front and rear springs 26, 26 so that the cam follower 21 follows the rotary cam 19. A plurality of detection pieces K _{1 to} K ₅ are bolted to the rotary cam 19, and a sensor (optical sensor or the like) 27 that operates by the passage of the detection pieces K _{1 to} K ₅ is provided on the conveyor frame 23. The detection sensor 27, the geared motor 20, the first to third conveyance units 2a, 2b, and 2c, a total of three electric motors 5, a pair of solenoids 13, a sensing sensor 29, which will be described later, and a contact switch 33 are attached. The automatic stacking control circuit A shown in FIG. 2 is configured by being connected to the control device 28. Further, as shown in FIG. 13, when the detection sensor 27 exists between the second detection piece K ₂ and the third detection piece K ₃ , the radius of the rotating cam 19 becomes equal to the rotation center X. The radius R ₁ and the second equal radius R in which the radius of the rotating cam 19 is equal to the rotation center X when the detection sensor 27 exists between the fourth detection piece K ₄ and the fifth detection piece K _{5. And 2} are formed on the rotary cam 19.

Next, the structure of the conveyor frame 23 will be described. As shown in FIGS. 3 and 5, the upper ends of the channel-shaped vertically oriented frames 30 are connected by the channel-shaped horizontally oriented frames 31, and the rectangular tubular members 32 and 32 are erected at the left and right ends of the horizontally oriented frames 31. In addition, the support shaft 7 for the rotating roller 6 is provided over the right and left rectangular tubular members 32, 32. The cover plate 34 is stretched over the upper surface of each of the lateral frames 31, and the cover plate 34 is stretched not only between the square tubular members 32 and 32 but also on the outside of the square tubular members 32 and 32. I am doing it. The cover plate 34 receives the soil protruding from the seedling raising box 1 moving on the rotating roller 6 and suppresses the influence on the control devices such as the electric motor 5 located below the cover plate 34. A through hole 34A is formed at a portion of the cover plate 34 where the arm frame 17 is inserted, and a cylindrical flange portion 34a is provided upright from the peripheral edge of the through hole 34A. On the other hand, the tubular member 18A is extended downward from the lift table 18, and the tubular member 18A is externally fitted and arranged so as to surround the flange portion 34a. By thus surrounding the collar portion 34a with the tubular member 18A, there is a merit that water does not enter even when washing with water. Such a structure of the collar portion 34a and the tubular member 18A is also provided in the portion forming the guide mechanism 22. Next, the stop device 35 for the nursery box 1 will be described. As shown in FIGS. 3 and 6, a stop device 35 is installed on the transport lower side of the stacking portion by the lift mechanism 10. This stopping device 35 is composed of a solenoid 36 for moving the spool vertically and a contact portion 37 attached to the end of the spool 36A of the solenoid 36. The receiving state is switched to the non-operating state, which is located below the elevating table 18 and allows the seedling raising box 1 to be carried out. The stop device 35 is located at the center of the carrying width direction of the carrying conveyor 2, and is equipped with sensing sensors 29, 29 at both left and right ends thereof. The detection sensor 29 includes a swing arm 29A pivotally supported by a square tube member 32 and a limit switch (not shown) that senses swing of the swing arm 29A. The swing arm 29A is located above the transport surface. It is possible to swing between a state of protruding to the rear and a state of coming into contact with the seedling raising box 1 to be carried out and retracting from the transport surface. From such a configuration, when the stopping device 35 receives the seedling raising box 1 in the operating state and during the stacking work, the swing arm 29A of the sensing sensor 29 is pushed down by the seedling raising box 1 which has reached the stacking position. The sensor 29 gives a signal to stop the electric motor 5 and operate the stacking device 3. Next, when the seedling raising boxes 1 are stacked in 30 layers and the stop device 35 is retracted to the non-acting state to carry out the seedling raising boxes 1, the swinging arm 29A is pushed down by the seedling raising boxes 1 at the time of carrying out and the detection sensor 29 sends a signal. It is possible to detect the carrying out of the nursery box group 1A. Therefore, when the swing arm 29A swings, the sensor 29 functions as a stop detection sensor for detecting the stop state of the seedling raising box 1 by the stop device 35, and the stop device 35 is in the non-acting state. It functions as a carry-out detection sensor that detects the carry-out state of the box 1. Therefore, the detection sensor 29 is configured to serve as both the stop detection sensor and the carry-out detection sensor.

Next, the operation of the stacking device 3 will be described. As shown in FIG. 8, the nursery box 1 is transported to the stacking position, and when the nursery box 1 reaches the stacking position, it is stopped by the stop device 35 and the swinging arm 29A is swung to move the electric motor 5. And the geared motor 20 is activated and the rotary cam 19 starts to rotate. Then, as shown in FIGS. 14 and 15, it takes 0.14 seconds for the nursery box 1 to move to the first predetermined height (14.5 mm) position H.₁The second detection piece K₂Causes the detection sensor 27 to operate (the state shown in FIG. 9), which causes the solenoid 13 to operate and the left and right engaging pieces 12 to move from the receiving posture to the non-operating posture in 0.12 seconds, and the second detection. Piece K₂From the detection of the third detection piece K₃The cam follower 21 keeps the contact radius of the rotating cam 19 constant for 0.17 seconds until it detects R.₁The seedling box 1 is located above the first predetermined height position H₁It will be maintained for a while. The first predetermined height is set slightly higher than the height (12.5 mm) at which the raising seedling raising box 1 contacts the lower end of the upper raising seedling raising box 1. Third detection piece K₃When the detection sensor 27 is actuated by, the electric cylinder 13 is stopped and the raising / lowering base 18 starts to rise again by the rotating cam 19 as shown in FIGS._Four10 reaches the detection sensor 27 (state of FIG. 10), the lift 18 moves up and reaches the upper limit of the second predetermined height (50 mm) position H.₂As the solenoid 13 is activated, the engaging piece 12 moves from the non-acting position to the receiving position in 0.12 seconds, and the fifth detecting piece K_FiveThe cam follower 21 keeps the contact radius of the rotating cam 19 constant for 0.16 seconds until it detects the second equal radius R ₂ It is on the upper side and the nursery box 1 is at the second predetermined height position H.₂It will be maintained for a while. As shown in FIG. 11, the fifth detection piece K_FiveWhen the detection sensor 27 is actuated by, the solenoid 13 is stopped and the rotating cam 19 causes the elevating table 18 to start descending. Then, it takes 0.71 seconds and the first detection piece K₁When it returns to the original state (state of FIG. 8) where it reaches the 27th detection sensor, the lift 18 also descends to its original height, and the geared motor 20 stops, and is detected by the nursery box 1 coming next. The stopped state of the geared motor 20 is maintained until the sensor 29 operates. In addition, the electric motor 5 of the second transport section 2b operates after the detection sensor 29 is activated, and then the fifth detection piece K_FiveIs stopped until it reaches the detection sensor 27 portion, and is driven during other times.

When 30 stages are stacked by repeating the stacking operation of 1.60 seconds for one cycle as described above, the contact switch 33 (see FIG. 3) mounted on the laminated frame is operated by the uppermost seedling raising box 1 to operate the geared motor 20. Then, the lifting table 18 is raised to the first predetermined height, the engaging piece 12 is operated to the non-acting posture, and the solenoid 36 is contracted and moved, and the stop device 35 is moved downward, so that the nursery box group 1A is temporarily moved. Is placed on the lift table 18, then the lift table 18 descends and the nursery box group 1A is transported to the carriage 4 by the second to fourth transport sections 2b, 2c, 2d. When the nursery box group 1A is carried out, the swing arm 29A is swung to detect the carry-out of the nursery box group 1A. By the detection operation of the sensing sensor 29, the sorenoid 30 is extended and the stopping device 35 is returned to the state in which the feeding of the nursery box 1 is blocked. For reference, the above-mentioned 1-cycle operation sequence system graph is shown in FIG. 14, and the lift trajectory graph of the lift mechanism 10 is shown in FIG. As described above, the upper surface of the raised seedling raising box 1 pushed up by the lift mechanism 10 is brought into contact with the lower surface of the placed seedling raising box 1 mounted and supported by the engaging pieces 12, and the placed seedling raising box 1 is slightly weighed. When the height corresponding to raising is reached, the lifting operation of the lift mechanism 10 is stopped and the engaging piece 12 is retracted, and after the engaging piece 12 is retracted, the lift mechanism 10 is re-activated to raise the raising seedling box 1. When a certain amount is pushed up, the engaging piece 12 in the retracted position is projected and moved to detect the height position of the raised seedling raising box 1 in a state where the raised seedling raising box 1 is mounted and supported by the support mechanism 11. (Detection sensor 27 and first to fifth detection pieces K₁~ K _Five And the lift mechanism 10 are linked to a control device 28 which is a control means.

[Other Embodiments] As the detection sensor 29, a rotation sensor such as a potentiometer may be provided at the axial center position of the swing arm 29A to detect the swing of the swing arm 29A. As the sensor 29, an optical sensor or the like for detecting the nursery box 1 in a non-contact manner may be provided. That is, this optical sensor detects the nursery box 1 stopped by the stop device 35, stops the electric motor 5, and activates the lifting device 3. When 30 stages are stacked by the lifting device 3, the seedling raising box group 1A is carried out. Then, the output of the optical sensor switches from the state in which the nursery box 1 is detected to the state in which it is not detected, and it can be detected that the nursery box group 1A has been carried out.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a plan view showing the overall structure of a seedling raising device.

FIG. 2 is a system diagram showing an automatic stacking control circuit.

FIG. 3 is a side view showing the stacking device.

FIG. 4 is a plan view showing a stacking device.

FIG. 5 is a rear view showing the stacking device.

FIG. 6 is a front view showing a stop device.

FIG. 7 is a plan view showing first to third conveyance units.

FIG. 8 is an operation diagram showing a lifting operation state in the stacking device.

FIG. 9 is an operation diagram showing a lifting operation state in the stacking device.

FIG. 10 is an operation diagram showing a lifting operation state in the stacking device.

FIG. 11 is an operation diagram showing a lifting operation state in the stacking device.

FIG. 12: Perspective view of nursery box

FIG. 13 is an enlarged view showing the relationship between the shape of the rotating cam and the detection piece.

FIG. 14 is a diagram showing an operating system graph of the stacking device.

FIG. 15 is a diagram showing a lift trajectory graph of the lift mechanism.

[Explanation of symbols]

 1 Nursery box 1A Nursery box group 2 Conveyor device 3 Stacking device 35 Stopping device

Claims (1)

[Scope of utility model registration request] 1. A transport device (2) for transporting a nursery box (1).
And a stop device (35) for switching between an operating state in which the seedling raising box (1) after sowing is stopped at the stacking position and a non-operating state in which the seedling raising box (1) is allowed to move, and the stop device (35) stops the operation. A seedling raising apparatus comprising a stacking device (3) for stacking the raised seedling raising box (1), wherein the seedling raising box (1) is stopped at the stacking position by the stop device (35) in the operating state. Detection sensor for detecting the state of being stopped, and a state in which the stopping device (35) is in a non-acting state, and the seedling raising box group (1A) stacked by a predetermined amount is carried out from the stacking position toward the germination step. Seedling raising device that is also used as a carry-out detection sensor for detecting.