JP2557511Y2 - Abnormality detection control device of nursery box accumulation device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accumulating device in a transport system for automatically accumulating and packing a nursery box after performing cleaning, disinfection and the like.

[0002]

2. Description of the Related Art A seedling box to be mounted on a seedling rack of a rotary seedling raising machine needs to be subjected to a treatment such as washing and disinfection, and packed and managed so as to be suitable for mounting on the seedling rack. For this purpose, it is desirable to have a transport system that transports the nursery boxes on a belt conveyor, automatically performs processing such as washing and disinfection, and stacks and packs them. However, in order to obtain a transport system by such automatic control, the applicant automatically closes the seedling boxes that have already been transported one after another on the belt conveyor, and after stacking a certain number of them, sends them out to the packing device in the next step. A patent has been filed for an automatic integration device having such a structure. The method of stacking in this automatic stacking device is to raise and lower a seedling box that stops at a fixed position in the device by raising and lowering a lot with a stacking claw attached to the upper part by raising and lowering an air cylinder, and loading a certain number of seedling boxes. And
The operation of the air cylinder is linked with a box home position detection sensor that inputs when the nursery box reaches the home position.

[0003]

In the stacking method as described above, when raising the rod of the air cylinder, the seedling raising box may come off from the stacking claws and a stacking error may occur.
If such a situation occurs, unless the subsequent transportation of the nursery box is stopped, the nursery box will be clogged, which may result in the inability to accumulate or cause damage to the nursery box. It is desirable to have an integrated device having a structure that automatically detects an accumulation error, issues an alarm, and stops driving of the device and the belt conveyor in the preceding process so as to take an immediate action immediately afterward.

[0004]

According to the present invention, the following means are used in order to achieve the above objects. The nursery box 2 is located at the box fixed position of the stacking device D and is closed.
By pressing against the gate 4 and stopping, it accumulates from the top
Lowering the lift 5 for the collecting nail 6 to the lower part of the seedling box 2
Lower the seedling box 2 again with the collecting nail 6.
Raise the seedling box 2 above the fixed position while supporting the edge of
And then transported on the belt conveyor 1 until it reaches the home position.
On the next nursery box 2, the nursery box 2
Is placed by lowering the stacking lift 5,
After lowering the stacking lift 5 again, raise it again,
The seedling raising that corresponds to the lowermost stage of the seedling box 2 collected by the collecting nail 6
Support the edge of box 2 and raise it further to collect it in place
The whole nursery box 2 is lifted above the home position , and this operation is performed.
Number of nursery boxes 2 at the fixed position is one less than the specified number
Repeat until the stacking is completed.
When the barrel nursery box 2 reaches the home position, lift the stacking lift 5
Lower the seedling box 2 that has been accumulated and raised.
Lower the seedling box 2 and open the gate 4 and carry it to the next step
In nursery box integrated device for output, the box in place of the nursery box 2
When the fixed position detection sensor LS2 is arranged and the box fixed position detection sensor LS2 is ON for a certain period of time during integration,
The alarm device is operated to stop the accumulating device and the previous process.

[0005]

When the nursery box stops at a fixed position in the stacking device, the box fixed position detection sensor is turned on, the air solenoid valve that drives the air cylinder is de-energized, the rod is lowered, and the rod is raised again to raise the rod. When the seedling box is lifted by the stacking claws of FIG.
FF is performed to prepare for the accumulation of the non-accumulated seedling boxes to be transported next. However, if the seedling box is displaced from the collecting claw when the rod is raised, the seedling box remains at the fixed position, the box fixed position detection sensor remains ON, and the ON state when the sample is normally collected. When the set time elapses, an alarm device such as an alarm buzzer or a lamp is activated, and the motor for driving the belt conveyor of the stacking device and the motor for driving the belt conveyor in the previous process are stopped.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention; FIG. 1 is a block diagram illustrating a process of the entire nursery box transport system, FIG. 2 is a plan view illustrating a configuration of an accumulation device D,
3 is a side view of the same, FIG. 4 is a front view of the gate 4 side, FIG. 5 is a partial plan view showing the structure of the stacking claw 6 in the stacking lift 5, FIG. 6 is also a partial front view, and FIG. FIG. 9 is a layout diagram of abnormality detection control in the integrated device D.

Referring to FIG. 1, the structure of the entire nursery box transport system will be described. The transport system transports the seedling boxes sequentially on the belt conveyor at regular intervals.First, the seedling boxes are lowered onto the belt conveyor driven by the seedling box supply device A, and the seedling boxes are washed by the washing device B. Next, in the draining / disinfecting device C, water droplets of the cleaning liquid remaining in the box in all the steps are removed, and a disinfectant is sprayed. Then, a certain number of seedling boxes that have been subjected to such processing are accumulated in the accumulation device D, and are conveyed to the packaging device E in the next step.

FIGS. 2 to 4 show the configuration of the integrated device D.
It will be explained in. The seedling raising box 2 is conveyed on the belt conveyor 1, and an accumulating device D is installed in the middle of the belt conveyor 1. The accumulating device D is a machine frame 3 for forming and supporting the seedling raising box during accumulating. From the gate 4 for opening and sending out the next process after the completion of accumulation, the stacking lift 5 for stacking a fixed number of the seedling boxes 2 closed, and the alarm device 13 for notifying the occurrence of an abnormality when the accumulation is abnormal. It is configured.

The belt conveyor 1 is driven by a motor M, and the front and rear of the belt conveyor 1 are connected to a belt conveyor of a draining / disinfecting device C and a packing device E, respectively. A driving motor is installed. S is a switch of the motor M, and a box fixed position detection sensor LS2
Is automatically controlled by a timer T which is linked to the control.

The alarm device 13 has an alarm buzzer BZ and an alarm lamp PL. When an abnormality occurs in the integrated device D, the alarm device 13 is turned on by automatic control, the alarm buzzer BZ sounds, and the alarm lamp PL blinks. And issue an alarm. Abnormalities related to transport or abnormalities related to stacking include the seedling box coming off the stacking nails during stacking (stacking mistake), or the stacking of the seedling boxes that are stacked incorrectly (horizontally) ( In this embodiment, the automatic control of the alarm device in the case of an accumulation error and abnormal loading will be described later.

The machine frame 3 has column members 3a erected at four corners, left and right column members 3a are erected at an upper portion, upper horizontal members 3b are erected, and each column member 3a is supported at a lower portion below the belt conveyor 1. It is connected and supported by the member 3c. A guide member 3d is provided at the entrance side of the stacking device D so as to fix the left and right positions of the seedling raising box 2 entering the device at a fixed position.

An actuator for opening and closing the gate 4 is operated by driving a gate opening and closing air cylinder SV1.
An actuator for raising and lowering the stacking lift 5 is driven by driving a lift lifting and lowering air cylinder SV2. Further, a box accumulation completion detection sensor LS1 which is turned on when a certain number of the seedling boxes 2 conveyed on the belt conveyor 1 are accumulated, and a box fixed position detection sensor LS2 which is turned on when the box reaches a fixed position. Are used to drive both cylinders.

The gate 4 is turned around a gate shaft 4a, which is provided in parallel with the column members 3a outside two right and left column members 3a that stand upright in the transport direction, of the column members 3a. It is movably mounted. A gate opening / closing air cylinder SV1 is disposed in the center of the upper horizontal member 3b on the front side in the transport direction of the machine frame 3 in parallel with the transport direction, and the gate links 4b Is connected to the end of the piston rod of the gate opening / closing air cylinder SV1. And the gate opening and closing air cylinder SV
In 1, the gate 4 is closed in a normal state, and the rod is driven in the retracting direction when energizing a solenoid valve provided in the middle of the air supply, and the gate 4 is opened as shown by a chain line in FIG. 2.

The stacking lift 5 is provided on the lower support member 3 of the machine frame 3.
c is connected to a lift lifting / lowering air cylinder SV2 fixed vertically at the center of the cylinder. The tip of the piston rod of the lift lifting / lowering air cylinder SV2 is connected to the bottom lift support member 5b, and rods 5a are attached to both sides thereof. The rod 5a is inserted into a pipe-shaped guide 9 fixed to a support member of the belt conveyor 1, and is in a position where the piston rod is lowered when the lift lifting / lowering air cylinder SV2 is normal. Figure 3
The lift 5 is moved up and down as shown in FIG.

At the upper end of each rod 5a, as shown in FIGS. 5 and 6, a pivot shaft 7 is laid so as to extend in parallel with the side surface of the seedling raising box 2. The two lowering edges of the seedling box 2 are supported by two collecting claws 6 pivotally connected to each other in the front-rear direction of the transporting direction. Are simultaneously pivotably supported above the horizontal. Thus, the stacking claws 6 connecting the front and rear two are arranged on both the left and right sides of the seedling raising box 2 to which the belt conveyor 1 is conveyed. As shown in FIG.
a, the stacking claws 6 press against the edge of the seedling box 2 on the belt conveyor 1 and rotate upward. When the rod 5a rises, on the other hand, when the rod 5a rises, the collecting claw 6 does not rotate downward, so that it rises while supporting the seedling raising box 2.

A method of stacking the seedling raising boxes 2 by raising and lowering the stacking lift 5 will be described. When the nursery box 2 reaches the box fixed position of the stacking device D and presses against the closed gate 4 and stops,
The stacking claw 6 is lowered to the lower part of the seedling box 2 by lowering the stacking lift 5 from the upper part, and is raised again to support the edge of the seedling box 2 with the stacking claw 6. Up above the home position. Next, the seedling box 2 pulled up earlier is placed on the next seedling box 2 that has been conveyed on the belt conveyor 1 and reached the home position by lowering the stacking lift 5. Further, after lowering the stacking lift 5, the stacking lift 5 is raised again, and the stacking nursery box 2 is
Of the seedling raising box 2 which corresponds to the lowermost stage of the above, is further raised, and the whole seedling raising box 2 accumulated at the fixed position is pulled up above the fixed position. This operation is repeated until the seedling boxes 2 are collected at the fixed position by one less than the specified number of accumulations, and when the seedling box 2 corresponding to the last one of the specified number of accumulation reaches the home position, the stacking lift 5 is reached. Is lowered, the seedling box 2 that has been accumulated and raised is lowered onto the seedling box 2 in a fixed position, the gate 4 is opened, and the seedling box is carried out in the next step.

Next, the arrangement and configuration of the box integration completion detection sensor LS1 and the box fixed position detection sensor LS2 will be described. First, the box integration completion detection sensor LS1 detects the seedling box 2 corresponding to the uppermost portion of the column member 3a of the machine frame 3 which is forward in the unloading direction when the number of the accumulated seedling boxes 2 reaches a certain number.
Attach to the position where it is pressed against the side of the rim. Further, the box fixed position detection sensor LS2 is configured such that, in the stacking device D, the side of the edge of the conveyed seedling raising box 2 of the column member 3a of the machine frame 3 corresponding to the front end of the fixed position where the seedling raising box 2 is collected. It is attached to a position where it can be pressed.

The box integration completion detection sensor LS1 is
When the number of seedling boxes 2 to be raised reaches a specified number (one less than the specified number of accumulations), the topmost seedling box 2 that has been accumulated is pressed and turned ON. The solenoid valve of the lifting / lowering air cylinder SV2 is de-energized, and the raised accumulated seedling boxes 2 are stored in the last one of the specified number of accumulations.
It is placed on a seedling box 2 at a fixed position corresponding to a sheet, the solenoid valve of the gate opening / closing air cylinder SV1 is energized to open the gate 4 for a certain period of time, and the accumulated seedling box 2 'is carried out.

On the other hand, the box fixed position detecting sensor LS2
During the accumulation (when the gate 4 is closed), when the unraised nursery box 2 is transported to a fixed position,
Is pressed and turned on, and in conjunction with this, the solenoid valve of the lift lifting / lowering air cylinder SV2 is de-energized, and the collecting lift 5 descends, and the seedling box 2 that has been accumulated and raised is moved to the fixed position. The raising / lowering air cylinder SV2 is placed on the seedling raising box 2 at the position, and the lift raising / lowering air cylinder SV2 is energized to raise and support the seedling raising box 2 collected at the fixed position by the stacking lift 5, so that it is lifted. When the raised seedling box 2 is out of the detection range of the box fixed position detection sensor LS2, the sensor is turned off. Therefore, if the seedling box 2 is detached from the collecting claw 6 while the lift is rising, the seedling box 2 remains at the fixed position, and the box fixed position sensor LS2 remains in the ON state, so that a stacking error can be detected. It is.

FIG. 7 shows that the box fixed position detection sensor LS2
The structure of the integration error abnormality detection control according to the first embodiment will be described.
In the present invention, the O of the box fixed position detection sensor LS2 is
A timer T in which the N state is set is provided. That is, the set time is set to an ON state that will be maintained in the case where the integration is performed normally. If the sensor is turned on for more than the set time, the above-described setting is performed. It is probable that an accumulation error occurred.
Therefore, when the set time is exceeded, the alarm buzzer BZ in the alarm device 13 sounds and the alarm lamp P
L flashes, and the belt conveyor 1 of the stacking device D
Then, the switch S of the motor M for driving is turned off, the driving of the belt conveyor 1 is stopped, and the conveyance of the subsequent seedling raising box 2 is stopped. In order to stop the seedling box 2 conveyed from the previous step, the switch S of the motor M for driving the belt conveyor of the draining / disinfecting apparatus C is turned off in the previous step, that is, in the conveying system of FIG. If necessary, the belt conveyor drive of the cleaning device B and the box supply device A in the previous process is also stopped.

Finally, an abnormality detection control for detecting an abnormal stacking of stacked seedling boxes 2 '(boxes are not stacked horizontally) will be described with reference to FIG. A packing device E is provided as a next process of the accumulating device D (the last process of the transport system), and is used for packing a specified number of the accumulated seedling raising boxes 2 'carried out from the accumulating device D. However, if the accumulated seedling raising boxes 2 'are not properly loaded, accurate packing work cannot be performed. Until the accumulated seedling raising boxes 2' reach the packing device E, abnormal loading is detected. Therefore, it is necessary to give an alarm and take measures to stop the transportation of the nursery box. Therefore, as shown in FIG. 7, the box height detection sensor LS3 is arranged at a position slightly higher than the upper end position when the stacked seedling raising boxes 2 'are normally loaded. If the accumulated seedling raising boxes 2 'are abnormally loaded, the seedling raising boxes are stacked diagonally, and a part thereof exceeds the normal upper end height. In this case, the box height detection sensor LS3 detects the portion, activates the alarm device 13, and stops the packing device E, the accumulating device D, and the motor for driving the belt conveyor in the preceding process. Note that the alarm device for notifying the abnormal loading may be configured differently from the alarm device 13 for notifying the accumulation error.

[0022]

[Effects of the Invention] The present invention has the following effects by being configured as described above. First, integration
The nursery box 2 is located at the box position of the device D, and the closed gate 4
To the stacking lift from above.
5 to lower the collecting nail 6 to the lower part of the seedling box 2;
The seedling raising box 2 is supported by the collecting claws 6 again.
While holding, raise the nursery box 2 above the home position,
The next time it is transported on the belt conveyor 1 and reaches the home position
On the nursery box 2, put the nursery box 2 raised earlier
The loading is performed by lowering the loading lift 5 and further collecting.
After lowering the loading lift 5, raise it again, and
At 6, the seedling raising box 2 corresponding to the bottom of the accumulated seedling raising box 2
Support the rim, raise it further, and accumulate in place
Raise the seedling box 2 above the fixed position and perform this operation.
The number of nursery boxes 2 to be collected is less than the specified number.
Until the last sheet of the specified number of accumulations
When the seedling box 2 reaches the home position, the stacking lift 5 is lowered.
The seedling box 2 that has been accumulated and raised
Lower the box 2, open the gate 4, and carry out the next step
By using the seedling box accumulation device , the seedling boxes 2 are accumulated in order from the bottom, so that the space for accumulating the seedling boxes 2 can be arranged above the belt conveyor 1, so that the operator can monitor the space. The integrated device was easy to operate and easy to operate. Conversely, when stacking the seedling boxes 2 from above, since the stacking device D can be located below the belt conveyor 1, it is necessary to finally lift the stacked seedling boxes 2; Lifting the nursery box is no longer necessary. Secondly, in a stacking device in a transport system that automatically cleans, disinfects, accumulates, and packs a nursery box, if the nursery box is detached from the accumulation claws during accumulation and a misaccumulation occurs, the box is detected. Automatic detection of alarms and stoppage of transport by sensor error detection enables quick detection of abnormalities in the event of a stacking error, eliminating jamming or damage to the nursery box and ensuring reliable stacking. It becomes.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the steps of the entire nursery box transport system.

FIG. 2 is a plan view illustrating a configuration of an integrated device D.

FIG. 3 is a side view of the same.

FIG. 4 is a front view of the same gate 4 side.

FIG. 5 is a partial plan view showing a configuration of a stacking claw 6 in the stacking lift 5;

FIG. 6 is a partial front view of the same.

FIG. 7 is a layout diagram of abnormality detection control of the integrated device D;

[Description of Signs] D Stacking Device E Packing Device M Belt Conveyor Drive Motor LS2 Box Fixed Position Detection Sensor 1 Belt Conveyor 2 Seedling Raising Box 2 'Integrated Seedling Raising Box 4 Gate 13 Alarm Device

Claims (1)

(57) [Scope of request for utility model registration] 1. A nursery box 2 is located at a fixed position of a stacking device D.
Then, by pressing against the closed gate 4 and stopping,
The stacking claw 6 is lowered by lowering the stacking lift 5 from the section.
2 and lower it again.
Hold the seedling box 2 in place while supporting the edge of the seedling box 2
And then transported on the belt conveyor 1 and set
On the next nursery box 2 that has reached the position, pull it up first
The seedling box 2 is lowered by lowering the stacking lift 5.
And after lowering the stacking lift 5 again,
And raise it to the bottom of the seedling box 2
Support the edge of the nursery box 2 that hits it, raise it further,
Pull up all the nursery boxes 2 collected at
Operation, the seedling raising box 2 is collected at the fixed position, and the number of
Repeat until a small number has been collected, and
When the nursery box 2 which corresponds to one of the pieces reaches the home position,
Nursery box that has been lifted by lowering the lift 5
2 is dropped on the nursery box 2 in the fixed position, the gate 4 is opened,
In the nursery box stacking device to be carried out in the next step, the box fixed position detection sensor LS2 is arranged at the fixed position of the seedling box 2, and the alarm device is activated when the box fixed position detection sensor LS2 is ON for a certain period of time during accumulation. An abnormality detection control device for the seedling box accumulating device, wherein the accumulating device and the previous process are stopped.