JPH07203717A - Vacuum seeder to pot - Google Patents

Abstract

PURPOSE:To provide a vacuum seeder to a pot capable of continuing seeding without making a large change even when a space between pot rows differs and the depth of a pot differs and preventing lowering of the accuracy of an optical sensor by dust. CONSTITUTION:This machine is so assembled that an optical sensor B for detecting a pot row projecting from a pot seedling tray is installed, the arrival of a conveyed pot is detected by a light irradiated from a light source of the optical sensor B and reflected from the pot, and seeds adsorbed to an adsorbing nozzle begin to drop. Here, in an assembling where the pot seedling tray is carried on an endless conveying body V, a tray guide 76 is arranged ion the endless conveying body V, the optical sensor B is fixed on a part of the tray guide 76 and the optical sensor B is positioned so as to be able to adjust over the conveying endless body V. Further, an air outlet is arranged on a side of the optical sensor B to prevent light projecting and receiving units from becoming dirt.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to adsorbing fine seeds to each pot by an adsorbing nozzle when growing seedlings before transplantation in the cultivation of flowers and vegetables. The present invention relates to a pot vacuum seeding machine for sowing.

[0002]

2. Description of the Related Art Conventionally, a technique relating to a pot sowing machine has been known. For example, JP-A-58-67
It is the same as the technique described in Japanese Patent Laid-Open No. 104, Japanese Utility Model Laid-Open No. 1-155714, and Japanese Utility Model Laid-Open No. 1-168118.

[0003]

The problems to be solved by the present invention are as follows. That is, in the vacuum sowing machine for pots, the timing of dropping the seeds adsorbed by the adsorption nozzle N is determined by confirming the movement of the pot by the optical sensor. However, conventionally, the seed was dropped by stopping the pot after the pot reached the seed dropping position. In the conventional method, the seeds are awaited to be dropped, and the time required for the sowing cycle for one grain is prolonged. In the present invention, from the time when the pot reaches a certain position, the seed is dropped at the same time while the transport of the pot is continued. Therefore, it is necessary to detect that the tip of the pot P has reached a certain position, and in the present invention, the light beam projected from the optical sensor is reached and blocked by the pot to obtain a received light beam, It is configured to detect that the tip of the pot P has reached a certain position and start dropping the seed from the suction nozzle. Further, the optical sensor B needs to be changed in position when the shapes of the pot seedling tray 37 and the pot P are different, and this change is easily made. Further, in the optical sensor B, the light projecting portion and the light receiving portion are contaminated by the adhesion of dust,
The sensor accuracy is reduced. The present invention solves these problems.

[0004]

The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be described. In claim 1, an optical sensor B for detecting a row of pots P protruding from the pot seedling tray 37.
And a light beam emitted from the light source of the optical sensor B is reflected by the pot P and returned to the pot P to be conveyed.
Is configured to detect the arrival of the seed, and the fall of the seed adsorbed by the adsorption nozzle N is started.

In claim 2, the pot seedling tray 37
Is placed on the transporting endless body V and is transported, a tray guide 76 is disposed on the transporting endless body V so that the width of the tray guide 76 can be adjusted, and the optical sensor B is provided at a part of the tray guide 76.
Is fixed so that the position of the optical sensor B can be adjusted on the transporting endless body V.

In the third aspect, the air discharge port K is arranged on the side of the optical sensor B to prevent the light projecting / receiving unit from being contaminated.

[0007]

[Operation] Next, the operation will be described. According to claim 1, even when the sizes of the pot seedling tray 37 and the pot P are changed, the time when the pot P reaches a certain position is detected by blocking the light beam at the tip of the pot P, Since it is possible to start dropping seeds from this point, sowing can be continued without making a great change even if the interval between the pot rows is different or the depth of the pot P is different.

In the second aspect, when the pot seedling tray 37 is conveyed on the conveying endless body V in an oblique state, the pot row becomes oblique, and even if the seeds are sown at the timing detected by the optical sensor B, the seeds are sown. Although it may not enter in the center of P, by providing the tray guides 75 and 76 as in the present invention, the pot row and the suction nozzle row are sown in a state where the pot seedling tray 37 is always straightened. You can do it. Further, by providing the tray guides 75 and 76, the problem that the light beam from the optical sensor B is blocked can be eliminated by mounting the optical sensor B in the opening 90 of the tray guide 76, and The optical sensor B can always be arranged at a position close to the pot P. By adjusting the tray guides 76 and 75 at the same time, the position of the optical sensor B can be finely adjusted in the transport direction.

In the third aspect, since the air discharge port K is arranged on the side of the optical sensor B, the dust in the light projecting / receiving portion of the optical sensor B can be constantly blown off by the compressed air. This can prevent the accuracy of the optical sensor B from decreasing.

[0010]

EXAMPLES Next, examples will be described. 1 is an overall side view of the pot seeder of the present invention, FIG. 2 is a side view of a side support plate 30, FIG. 3 is a side view of the adjustment side plates 8L and 8R, and FIG. 4 is a seed dish 1 and a suction nozzle. FIG. 5 is an exploded perspective view of N and the seed guide pipe 3, FIG.
6 and the optical sensor B mounted on the tray guide 76, FIG. 6 is an enlarged perspective view of the pot P and the optical sensor B, FIG. 7 is a side view when the pot P is large, and FIG. It is a side view when is small.

The overall construction of the pot sowing machine will be described with reference to FIGS. 1 and 2. The support frame 34 is placed on the support legs 41 with casters, the pulleys 39 and 42 are bearing-supported at both front and rear ends of the support frame 34, and the endless transporting body V is wound around the pulleys 39 and 42. Drive motor 40
It is driven intermittently by. A pot seedling tray 37 having a large number of rows of pots P is placed on the belt and is moved intermittently.

The side support plate 3 is attached to the support frame 34.
0,30 are supported. The side support plates 30 and 30 are pivotally supported on the support frame 34 by an angle adjusting pivot fulcrum 31, and the rear vertical rotation fixing bolt 33 is provided in the elongated hole 3.
By moving up and down in 2, the angle of the side support plates 30, 30 can be adjusted with respect to the support frame 34. Further, between the left and right side surface support plates 30, 30, the seeding device supported on the adjusting side plates 8L, 8R is suspended by the left and right adjusting screws 29, 29 so as to be vertically adjustable.

An adjusting handle 28 at the upper end of the adjusting screws 29, 29 is projected above the side supporting plates 30, 30. By rotating the left and right adjusting handles 28, the adjusting side plates 8L, 8R are moved up and down, The support scale body 26 fixed to the adjustment side plates 8L and 8R moves up and down. The portions of the erection bolts 23a, 23b for fixing the support scale 26 move up and down in the long holes 35, 36 opened in the side support plates 30, 30.
The tip of the support scale 26 points out the position of the scale of the scale 27, and the scale 27 is used to display the distance H between the lower end of the seed guide pipe 3 and the upper surface of the pot seedling tray 37.

Next, referring to FIGS. 3 and 4, the structure of the seed tray 1, the suction nozzle N, the seed guide pipe 3 and the like supported by the left and right adjusting side plates 8L and 8R will be described. Left and right adjustment side plates 8
The seed tray 1 is swingably movable back and forth between L and 8R by swing parallel links 10R, 11R, 10L and 11L. The four swinging parallel links have their lower ends pivotally supported,
The support shafts 15 and 14 at the lower part of the seed dish 1 are pivotally supported at the upper end position. The upper ends of the swinging parallel links 10L and 10R pivotally support both ends of the support shaft 15 of the seed dish 1, and the upper ends of the swinging parallel links 11L and 11R pivotally support both ends of the support shaft 14. The support shaft 15 rotates inside the arcuate elongated holes 8c of the adjusting side plates 8L and 8R. In addition, the swing parallel link 11L,
A lower end of 11R is supported by a pivot shaft 13, and lower ends of the swing parallel links 10L and 10R are pivotally supported by a pivot shaft 12. Then, the distance X between the pivot shaft 12 and the pivot shaft 13 is set to be larger than the distance Y between the support shaft 15 and the support shaft 14, and when the seed dish 1 swings, when the suction nozzle N sucks it. When the seed placement surface 1b is close to the suction nozzle N and the drop guide port 2 is below the suction nozzle N, the seed dish 1 is separated.

The bracket 10 is attached to the swinging parallel link 10R.
a is provided, and the tip of the piston of the seed dish swinging cylinder 5 is pivotally connected. The other end of the seed dish swinging cylinder 5 is pivotally supported by a bracket 8a provided on the adjusting side plate 8R. Further, the support shafts 14 and 15 pass through and support the seed dish supports 19 and 20, and the seed dish 1 is mounted on the seed dish supports 19 and 20.
And the drop guide port 2 that is integrated is fixed. In addition, bolt holes 1a, 1a are formed on the lower surface of the seed dish 1,
A bifurcated diaphragm 4 bifurcated into the bolt holes 1a, 1a.
3 is fixed. The branch vibrating plate 43 vibrates the lower surface of the seed dish 1 by the vibrating device 7 so that the seeds are not biased.

On the seed dish 1, a suction nozzle N is supported between the adjusting side plates 8L and 8R. The suction nozzle N is composed of a nozzle body 9 and a plurality of nozzle openings 9a. There is one air passage inside the nozzle body 9, and only the tip is branched into a plurality of nozzle openings 9a. A compressed air pipe 38 is connected to the center of the nozzle body 9. The nozzle body 9 is fixed to the suction nozzle support rod 22, and both ends of the suction nozzle support rod 22 are fixed to the adjustment side plate 8.
It is possible to move up and down inside the locking elongated holes 25 formed in L and 8R. A locking step portion 25 'is provided at a position above the locking elongated hole 25, and the suction nozzle N is placed by placing a portion of the suction nozzle support rod 22 on the locking step portion 25'. The seed dish 1 can be removed by placing the seed plate 1 in the released state.

A position adjusting screw 24 for regulating the position of the lower end of the suction nozzle support rod 22 is provided to regulate the position of the lowermost end of the suction nozzle N. A downward urging spring 18 is urged on both sides of the suction nozzle support rod 22 so that the suction nozzle N is urged to be positioned at a position regulated by the position adjusting screw 24. Seed dish 1
By rotating the seed dish swinging cylinder 5 back and forth, the position between the inheritance guide port 4 and the nozzle port 9a is moved back and forth. Then, since the forward and backward movement of the seed dish 1 by the seed dish swinging cylinder 5 makes an arc motion, the seed placing surface 1b of the seed dish 1 rises below the nozzle opening 9a and approaches, and in this state, the compressed air pipe 38 Suction air from the nozzle port 9a
By making the tip of the negative pressure negative, the seed inside the seed dish 1 is adsorbed.

When the seed dish rocking cylinder 5 is contracted from the state where the seeds are adsorbed by the nozzle port 9a, the nozzle port 9a
Then, the seed placing surface 1b of the seed dish 1 is rotated so as to be farther away.
The portion of the drop guide port 2 integrally formed with the front end portion of the seed dish 1 is located below the nozzle body 9. A part of the funnel portion of the drop guide port 2 is an opening, and the nozzle body 9 moves into the funnel part of the drop guide port 2 through the opening. A seed drop port is provided in the lower part of the funnel part, and the seed drops from the seed drop port to the long-hole funnel part of the inheritance guide port 4. A seed drop opening is opened in the lower part of the elongated funnel portion. A seed guide pipe 3 is communicated with the seed drop port.

The seed guide pipe 3 is made of an elastic body such as synthetic resin or rubber. And seed guide pipe 3
The lower end of is fixed to the lower end drop port 21. The lower end drop port 21 is supported by the holder 6. The holder 6
Is supported by the adjustment side plates 8L and 8R by a suspension rod 17 and a support rod 16. Therefore, by turning the adjusting handle 28 to adjust the adjusting screws 29, 29, the seed guide pipe 3
Since the holder 6 and the lower end drop port 21 also move up and down, the distance H between the lower end of the seed guide pipe 3 and the upper surface of the pot seedling tray 37 can be adjusted.

Next, referring to FIG. 3, the position of the seed dish 1 and the procedure for sowing will be described. In FIG. 3, the seed dish swinging cylinder 5 is in an extended state, and the seed dish 1 is swinging to the left side of the drawing. Therefore, the seed dish 1 is at the highest position, and the nozzle mouth 9
The tip of a and the surface of the seed mounting surface 1b are close to each other, and the seed is easily adsorbed to the nozzle port 9a. Next, the seed dish rocking cylinder 5 is slightly contracted, and the seed dish 1 starts moving to the right side of the drawing. In this state, seeds are adsorbed on the tip of the nozzle port 9a. When the seed dish swinging cylinder 5 is further contracted, the nozzle body 9 is moved inside the drop guide port 2 at the end of the seed dish 1, and at this position, the suction negative pressure is released, and the compressed air is compressed. Nozzle mouth 9a
When the seeds are pushed out from the
From the bottom to the elongated funnel portion of the inheritance guide port 4, and through the seed guide pipe 3 to the bottom drop port 21 into each pot P of the pot seedling tray 37.

As shown in FIGS. 7 and 8, pot seedling tray 3
The shapes of 7 and pot P differ depending on the types of flowers and vegetables to be grown, and it is not possible to determine the position for each pot P of each deformation and start dropping the seeds. Therefore, the present invention is configured to detect the moment when the tip of the pot P blocks the light beam of the optical sensor B with the velocity of the transporting endless body V being constant, and start dropping the seed from this moment. Therefore, as shown in FIGS. 7 and 8, even when the shapes of the pot seedling tray 37 and the pot P are different, the distance L between the upper surface of the transporting endless body V and the position of the optical sensor B is not changed.

When the pot seedling tray 37 passes obliquely on the transporting endless body V due to the difference in the width of the pot seedling tray 37, the detection position of the optical sensor B and the pot seedling formed obliquely. When the row of pots on the tray 37 is slanted and seeds fall from the lower end drop port 21, the pot P
May not be located, so the tray guides 76, 75
Is provided, and the pot seedling tray 37 is configured to advance straight during this period. In this way the tray guide 7
When 6 is provided, the tray guide 76 blocks the construction of the optical sensor B. In the present invention, in order to solve this problem, the tray guide 76 itself is provided with an opening 90, a bracket 81 is provided at the opening 90, and the optical sensor B fixed to the bracket 87 is attached to the bracket 81. It is configured accordingly. Brackets 87 and 8
1 is fixed by the bolt 70.

Further, the tray guide 76 has a pivotally supporting portion 83,
84 is provided, and pivot pins 71 and 72 are attached to the pivot portions 83 and 84.
Are provided, and the pivot pins 71 and 72 are connected to parallel links 73 and 74.
Is pivoted to. The other ends of the parallel links 73, 74 are inserted into the insertion holes 77, 78 provided in the support leg 41, and the pivot rods 85, 86 are provided.
It is screwed by. Similarly, a tray guide 75 is provided on the side opposite to the tray guide 76, and the width can be freely adjusted by parallel links 79 and 80.

Further, as shown in FIG. 6, an air discharge port K for blowing air from the compression pump is arranged beside the optical sensor B. The air discharge port K blows air to the light projecting / light receiving portion of the optical sensor B to prevent contamination.

[0025]

Since the present invention is configured as described above, it has the following effects. According to claim 1, an optical sensor B for detecting the row of the pots P protruding from the pot seedling tray 37 is provided, and the light beam emitted from the light source of the optical sensor B is reflected by the pot P and returned to be conveyed. Is configured to detect the arrival of the pot P, and the seeds adsorbed by the adsorption nozzle N start to fall.
Even when the size of the pot P changes, the time point when the pot P reaches a certain position is detected by the tip of the pot P blocking the light beam, and the seed starts to drop from this time point. Therefore, even if the interval between the pot rows is different or the depth of the pot P is different, sowing can be continued without making a large change.

According to a second aspect, the pot seedling tray 37 is
In a configuration in which the sheet is placed on the transporting endless body V and is transported, a tray guide 76 is arranged on the transporting endless body V so that the width can be adjusted, and the optical sensor B is fixed to a part of the tray guide 76. Since the position of the optical sensor B can be adjusted on the transporting endless body V, when the pot seedling tray 37 is transported in an oblique state on the transporting endless body V, the pot row becomes slanted and detected by the optical sensor B. Even if the seeds are sown at the timing, the seeds may not enter the center of the pot P in some cases. However, by providing the tray guides 75 and 76 as in the present invention, the pot seedling tray 37 is always straightened in the pot row. It is possible to sow in a state where the suction nozzle row is straight.
Further, by providing the tray guides 75 and 76, the problem that the light beam from the optical sensor B is blocked can be eliminated by mounting the optical sensor B in the opening 90 of the tray guide 76, and The optical sensor B can always be arranged at a position close to the pot P. Further, by adjusting the tray guides 76 and 75 at the same time, the position of the optical sensor B can be finely adjusted in the carrying direction.

Since the air discharge port K is arranged on the side of the optical sensor B as described in claim 3, it is possible to constantly blow off the dust in the light projecting / receiving portion of the optical sensor B by the compressed air. This makes it possible to prevent the accuracy of the optical sensor B from decreasing.

[Brief description of drawings]

FIG. 1 is an overall side view of a pot seeder of the present invention.

FIG. 2 is a side view of a side support plate 30.

FIG. 3 is a side view of the adjustment side plates 8L and 8R.

FIG. 4 is an exploded perspective view of a portion of a seed dish 1, a suction nozzle N, and a seed guide pipe 3.

FIG. 5 is a perspective view of a tray guide whose width is adjustable and an optical sensor B mounted on the tray guide.

FIG. 6 is an enlarged perspective view of a pot P and an optical sensor B.

FIG. 7 is a side view when the pot P is large.

FIG. 8 is a side view when the pot P is small.

[Explanation of symbols]

 B Optical sensor N Adsorption nozzle 1 Seed dish 3 Seed guide pipe 5 Seed dish swing cylinder 8L, 8R Adjusting side plate 9 Nozzle body 9a Nozzle mouth 76 Tray guide

Claims (3)

[Claims] 1. An optical sensor B for detecting a row of pots P protruding from a pot seedling tray 37 is provided.
The light emitted from the light source is reflected to the pot P and returned to the pot P to detect the arrival of the pot P being conveyed, and the seed adsorbed to the adsorption nozzle N is started to fall. Vacuum seeding machine. 2. The pot seedling tray 37 according to claim 1,
In a configuration in which the sheet is placed on the transporting endless body V and is transported, a tray guide 76 is arranged on the transporting endless body V so that the width can be adjusted, and the optical sensor B is fixed to a part of the tray guide 76. A vacuum seeder for pots, characterized in that the position of the optical sensor B can be adjusted on the transporting endless body V. 3. A vacuum seeder for pots, characterized in that an air discharge port K is arranged on the side of the optical sensor B according to claim 1 to prevent contamination of the light projecting / receiving unit.