JPH0994009A - Seeding tray feeder for transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the holding of a seedling tray at a proper position without causing the damage to or deformation of the seedling tray or without deteriorating vertical feeding functions by guiding the seedling tray in the vertical feeding direction while hardly producing the sliding friction. SOLUTION: This seedling tray feeder for a transplanter is capable of intermittently driving winding and stretching mechanisms 35 in a state of engaging pins 36 engaged with transverse groove parts (21c) between pot parts (21a) by each pot part (21a) and thereby intermittently and vertically feeding the seedling tray 21. In this case, guide wheels 55 for fitting into longitudinal groove parts (21b) among the pot parts (21a) and guiding the seedling tray 21 in the vertical feeding direction are installed in a driving shaft 31 to which driving wheels 33 of the winding and stretching mechanisms 35 are fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical feeding device for a seedling tray mounted on a vegetable transplanter or the like.

[0002]

2. Description of the Related Art As the above-mentioned vegetable transplanting machine, a seedling tray feeding device for intermittently transferring a seedling tray on which soil block seedlings have been raised vertically and horizontally, a planting device for planting soil block seedlings in a ridge, and a soil tray to soil A seedling extraction device that takes out block seedlings one by one and supplies them to the planting device is mounted on each traveling machine, and the soil block seedlings are automatically planted on the ridges while the traveling machine bodies are run along the ridges. (See, for example, Japanese Utility Model Laid-Open No. 5-4820 and Japanese Utility Model Laid-Open No. 5-13118).

In this transplanter, seedling trays are intermittently fed laterally one pot at a time, and when the soil block seedlings have been taken out from the pots in a horizontal row, the seedling trays are removed. The seedling tray is fed one pitch in the vertical direction, and again the seedling tray is intermittently fed laterally to the opposite side. In this case, the seedling tray feeder has a drive sprocket and a drive sprocket at both left and right ends of the guide frame that intermittently moves in either the left or right direction.
It is configured by providing a winding transmission mechanism composed of a driven sprocket and a carrier chain wound around these, and by projecting an engaging pin inside the carrier chain. In this state, the transport chain is intermittently driven in a state of being hooked to the seedling tray to intermittently feed it vertically.

[0004]

In the transplanter described above, the soil block seedlings can be properly taken out by the take-out claws of the seedling take-out device unless the pot portion is set at an appropriate position at the take-out position of the seedlings. In some cases, the edges of the seedling tray may get caught in the guide frame and hinder the vertical feed motion.

Therefore, conventionally, a large number of guide ribs are provided on the bottom plate of the guide frame so as to project along the vertical feed direction, and the guide ribs are fitted in the vertical groove portions between the pot portions and guided in the vertical feed direction. The posture of the seedling tray at the seedling take-out position is maintained in a proper posture (see the above-mentioned publications). However, since all the conventional guide ribs are fixed to the bottom plate of the guide frame, the seedling tray is vertically fed while sliding on the guide ribs.

For this reason, when the seedling tray is guided by such a large number of guide ribs, the sliding friction of the tray with respect to the guide frame becomes too large, and this sliding friction damages the seedling tray early or stops the seedling tray at a predetermined position. If this is not possible, there is a risk that the vertical feeding function of the feeding device will be adversely affected. Also, if the sliding friction of the seedling tray is too large, the seedling tray is deformed by the vertical force received from the engaging pin of the transport chain, or the deformed seedling tray is caught in the guide frame and cannot be fed vertically. Therefore, it may cause work trouble.

On the other hand, in the seedling tray feeding device,
The horizontal feed pitch of the guide frame and the vertical feed pitch of the transport chain may be changed to enable intermittent feeding of multiple types of seedling trays with different pot sizes and pitches. If it is fixed to the bottom plate of the guide frame, it has the disadvantage that it can handle only one kind of seedling tray.

In view of the above situation, the present invention guides the seedling tray in the vertical feeding direction with almost no sliding friction, so that the seedling tray is damaged or deformed or the vertical feeding function is deteriorated. The first purpose is to enable the seedling tray to be held at an appropriate position without performing the above. Also,
The present invention is a seedling tray feeding device provided with a function of guiding the seedling tray in the longitudinal feeding direction as described above, and a plurality of types of pots having different sizes and pitches are provided in the same device. The second purpose is to be able to handle the seedling tray.

[0009]

In order to achieve the above object,
The present invention has taken the following technical means. That is, the present invention provides a seedling tray in which a large number of pots independent of each other are vertically and horizontally arranged, a guide frame for movably supporting the seedling tray in the vertical feed direction, and a drive wheel located on the front side in the vertical feed direction. The frame includes a winding transmission mechanism provided on both left and right ends of the frame, and a hooking member provided on an endless member of the winding transmission mechanism, and the hooking member is hooked on the seedling tray. In the seedling tray feeder of the transplanter configured to intermittently vertically feed the seedling tray by intermittently driving the winding transmission mechanism for each pot portion, the drive wheel of the winding transmission mechanism is fixed. The drive shaft is provided with a guide wheel fitted in the vertical groove portion between the pot portions and guiding the seedling tray in the vertical feed direction (claim 1).

In the present invention, since the guide wheel is provided on the drive shaft to which the drive wheel of the winding transmission mechanism is fixed, the guide wheel follows the movement of the seedling tray, and the tray is fed in the longitudinal feed direction. Therefore, sliding friction is hardly generated between the guide ring and the seedling tray. In this case, the guide wheel guides the seedling tray in the vertical feed direction, so it must be attached so as to be immovable in the axial direction with respect to the drive shaft, but sliding friction against the seedling tray does not occur during vertical feed. In order to achieve this, it may be attached to the drive shaft so as not to rotate about the axis or to be rotatable (claim 2 or 3).

That is, even if the guide wheel is attached to the drive shaft so as not to rotate about the axis, the guide wheel rotates in synchronization with the drive wheel or the endless member. Almost does not slide against. On the other hand, even when the guide wheel is attached to the drive shaft so as to be rotatable about its axis, the guide wheel rotates while following the vertically fed seedling tray, and therefore hardly slides on the tray.

On the other hand, when the hooking member is an engaging pin that is cantilevered from the endless member to the inside of the guide frame so as to fit in the lateral groove portion between the pot portions, the guide wheel is It is preferable that the outer peripheral edge portion is attached to both ends of the drive shaft in the axial direction so as to be close to the tip of the engagement pin (claim 4). In this case, the guide wheel fits into the vertical groove near the engagement pin and guides the seedling tray, so that the load from the engagement pin can be supported by the guide wheel as much as possible, and the vertical feed can be performed. This prevents deformation of the seedling tray.

If the guide wheel is attached to the drive shaft so that its axial position is adjustable (claim 5), the mounting position of the guide wheel is changed according to the pitch of the seedling tray. This makes it possible to handle seedling trays with different pot sizes and pitches.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show a first embodiment of the present invention. In FIG. 5, the vegetable transplanter 1 is
It is a walking type having a transplanting device 3 and a steering handle 4 behind the traveling machine body 2, and is a plant for planting the soil block seedlings S in the ridge 5 at a predetermined interval while traveling in the longitudinal direction across the ridge 5. is there.

In the following, the direction of movement of the transplanter 1 is called the front-back direction, and the lateral direction orthogonal to the direction of movement is called the left-right direction. The traveling machine body 2 is mainly configured by attaching a gantry 7 to the front part of the mission case 6 in a forwardly protruding shape, mounting an engine 8 and the like on the gantry 7, and providing front wheels 9 and rear wheels 10 on both left and right sides. ing.

The power of the engine 8 is input to the power transmission mechanism in the mission case 6. The power input into the mission case 6 is transmitted to a wheel transmission shaft 11 projecting to the left and right sides via a transmission mechanism (not shown), and projects to the left and right sides provided behind the wheel transmission shaft 11. First PTO
It can be taken out from the shaft 12 and the second PTO shaft 13 protruding upward and rearward.

A transmission case 14 is provided at the outer ends of the left and right wheel transmission shafts 11 so as to be vertically swingable about the axis thereof.
The rear wheel 10 is pivotally supported on the lower portion of the transmission case 14. The power of the wheel transmission shaft 11 is transmitted to the rear wheel 10 via the chain transmission mechanism in the transmission case 14, and thereby the rear wheel 10 is rotationally driven. The transplanting device 3 is provided on a transplanting frame 15 extending to the rear of the traveling body 2, and has a planting cup 16 for planting seedlings in the ridges 5 and a seedling supplying device 17 for supplying seedlings to the planting cup 16. And a soil cover / squeeze roller 18. When the ridges 5 are covered with the mulch film, a punching device (not shown) for forming a hole for planting in the mulch film is provided in front of the planting cup 16.

The transplantation frame 15 comprises a main frame 19 whose front portion is fixed to the upper rear portion of the mission case 6, and a pair of left and right movable frames 20 whose front portion is pivotally attached to the rear portion of the mission case 6. The movable frame 20 has a front end pivotally attached to the left and right first PTO shafts 12 so as to be rotatable about a horizontal axis, and a rear end thereof suspended from the main frame 19 so that the vertical position thereof can be adjusted. The steering handle 4 is fixed to the rear end of the main frame 19, and the movable frame 2
The soil covering / squeezing roller 18 is attached to the rear portion of the 0.

The planting cup 16 is supported by a movable frame 20 through a parallel link mechanism (not shown) so as to be swingable vertically and backward and forward, and is driven by power from the first PTO shaft 12. Moreover, seedlings are dropped and supplied at the upper part of the locus of the planting cup 16, and plunge into the ridges 5 at the lower part of the locus. Further, the planting cup 16 is provided with an opener that can be opened and closed back and forth at the lower part, and this opener opens forward and backward when the planting cup 16 plunges into the ridge 5 at the lower end side of the locus and forms a planting hole in the ridge 5. Simultaneously with the formation, the soil block seedling S held in the planting cup 16 is planted in this planting hole.

The seedling feeding device 17 is arranged above the rear end of the main frame 19, and has a seedling tray feeder 22 for intermittently feeding seedling trays 21 containing a large number of soil block seedlings S vertically and horizontally, The seedling take-out device 23 is provided in front of the seedling tray feeder 22 and takes out the seedlings S from the seedling tray 21 one by one and supplies them to the planting cup 16.

As shown in FIG. 1, the seedling tray 21 in the present embodiment is made of thin plastic and has a large number of pots 21a arranged in a grid pattern at a predetermined pitch in the vertical and horizontal directions. Is independently provided, and the opening edge portions of the pot portion 21a are connected to each other in a planar shape. In this way, since the large number of pot portions 21a project to the back surface side of the seedling tray 21 and are vertically and horizontally independent from each other, they are formed between the pot portions 21a on the back surface side of the seedling tray 21. A vertical groove portion 21b in the vertical direction and a horizontal groove portion 21c in the horizontal direction are formed. In order to grow the soil block seedlings S on the seedling tray 21, all pot portions 21a are filled with bed soil, and then seeded there to raise seedlings.

The seedling take-out device 23 has a seedling take-out claw 24 supported by the main frame 19 via a swinging motion mechanism,
The claw 24 is driven via a universal joint 25 having a front end connected to the second PTO shaft 13 and a power transmission mechanism in a relay box 26 to which a rear end of the joint 25 is connected. The seedling take-out claw 24 has a pot portion 21a.
The block soil in the inside is pierced obliquely from the front, and while moving slightly upward, it moves forward to move the seedling S to the pot portion 21a.
Then, the seedling S is moved downward while changing its posture so as to be in a substantially vertical posture. Then, the seedling take-out nail 24 discharges the seedling S at the lower end position of the movement locus to supply the seedling S to the planting cup 16 which is at the upper end of the cup movement locus, and then returns to the original position. Reciprocate to.

As shown in FIGS. 4 and 5, the seedling tray feeding device 22 is provided with a guide frame 28 supported by a main frame 19 and a guide rail 27 fixed to the handle 4 so as to be movable in the left-right direction. This guide frame 28
Has a bottom plate 29 that supports the bottom of the seedling tray 21 across the pots 21a arranged in a row, and side plates 30 are fixed to the left and right ends of the bottom plate 29.

As shown in FIG. 1, a vertical feed drive shaft 31 is erected in the left-right direction at the lower portion (front portion in the vertical feed direction) of the left and right side plates 30, while the upper portion (vertical length) of the left and right side plates 30 is provided. A vertical feed driven shaft 32 is installed in the left-right direction at the rear of the feed direction). A drive sprocket (drive wheel) 33 is fixed to both ends of the drive shaft 31, and the driven shaft 32
Driven sprockets (driven wheels) 34 are attached to both ends of the
Has been fixed.

Between the drive sprocket 33 and the driven sprocket 34, there is a conveyor chain 35 extending over them.
The engagement pin 36 that is cantilevered around the inside of the frame 35 so as to be fitted to the lateral groove portion 21c formed between the pot portions 21a arranged in the vertical direction on the inside of the chain 35 facing each other. Are attached at predetermined intervals.

On the outer peripheral portions of the left and right side plates 30 facing each other,
A flange portion 47 that covers the transport chain 35 from the outside is provided so as to protrude toward the inside, and a pressing frame 48 that presses the edge portion of the seedling tray 21 from above is provided at the flange portion 47. On the other hand, at the center of the bottom plate 29, a guide plate 49 that fits in the vertical groove 21b at the center of the seedling tray 21 and guides in the vertical feed direction is provided extending in the vertical direction. This guide plate 49 is the bottom plate 2
It also has a function to reinforce the bottom plate 29 as a spine of 9.

Then, as shown in FIG. 2, the holding frame 4
When the tray 21 is inserted from above the guide frame 28 so that the seedling tray 21 is sandwiched between the bottom plate 29 and the bottom plate 29, the engaging pin 36 of the transport chain 35 causes the seedling tray 2 to move.
1 is fitted in the lateral groove portion 21c to hook the pot portion 21a,
In this state, the seedling tray 21 is vertically fed by rotating the drive shaft 31 in the direction of arrow A in FIG.

Further, the lower part of the bottom plate 29 (the front part in the longitudinal feed direction)
Has a curved portion 50 curved inward so as to have the same radius when viewed from the vertical feed drive shaft 31,
Below the left and right side plates 30, a pressing member 51 for pressing the upper surface of the seedling tray 21 from above and bending it along the bending portion 50 is provided. This pressing member 51 is
The tip portion is fixed to a mounting shaft 52 that is erected between the lower portions of the side plates 30 while being biased toward the bottom plate 29.

For this reason, the seedling tray 21 which is sequentially fed vertically
Is curved downward along the curved portion 50 of the bottom plate 29,
Eventually, it returns to the bottom of the steering wheel 4 which is the operator's hand. The transport chain 35
The engaging pins 36 are provided at positions that match the pitches between the pot portions 21a of the seedling trays 21 of several types with different intervals between the pot portions 21a, or their attachment positions can be changed.

Further, as shown in FIG. 3, a chain tightener 53 for displacing the transport chain 35 to the outer peripheral side of the side plate 30 is provided at the center of the side plate 30. The engaging pin 36 that has passed through the sprocket 34 quickly and deeply enters the deep side of the lateral groove portion 21c of the seedling tray 21 so that the seedling tray 21 can be vertically fed more reliably.

On the other hand, as shown in FIGS. 1 and 2, on the vertical feed drive shaft 31 to which the drive sprocket 33 is fixed,
A pair of left and right guide disks (guide wheels) 55 that are fitted in the vertical groove portions 21b between the pot portions 21a of the seedling tray 21 and guide the tray 21 in the vertical feed direction are provided. Each guide disc 55 has a boss portion 56 to which the drive shaft 31 is fitted.
A disk portion 57 is provided so as to project from the outer periphery of the drive shaft, and a set screw 58 penetrating the boss portion 56 radially inward prevents the drive shaft 31 from moving axially in the left and right ends of the drive shaft 31 and rotating around the shaft center. It is installed.

As shown in FIG. 2, the first vertical groove portion 21b at both left and right ends of the curved portion 50 and from the end of the seedling tray 21.
A slit 59 is formed at a position corresponding to, and the disc portion 57 of the guide disk 55 projects into the slit 59 and enters the curved surface 50. Therefore, the outer peripheral edge portion of the disc portion 57 is as close to the engagement pin 3 as possible.
The first vertical groove portion 21b is fitted in the slit 59 so as to come close to the tip of the slit 6.

As shown in FIG. 4, the seedling tray feeder 22 is provided.
The lateral feed mechanism 22A has a pair of left and right support members 37 arranged on both left and right sides of the guide frame 28 and fixed to the handle 4, and a horizontal groove having a spiral groove rotatably installed between the support members 37. And a feed shaft 38. The lateral feed shaft 38 is inserted into the lateral holes 54 formed in the left and right side plates 30, and the power in the right side support member 37, which is composed of a winding transmission mechanism and a transmission case (not shown) from the relay box 26. It is rotationally driven via the transmission mechanism.

A slider 39 having an engaging member that meshes with the spiral groove is externally fitted to the lateral feed shaft 38, and the slider 39 is connected to the guide frame 28. Therefore, when the lateral feed shaft 38 is intermittently driven to rotate by the power transmission mechanism, the slider 39 moves left and right, and the guide frame 28 intermittently reciprocates in either the left or right direction.

Next, the vertical feed mechanism 22B of the seedling tray feeder 22 is provided with a vertical feed cam 40 fixed to the left and right ends of the horizontal feed shaft 38 and a vertical feed operation installed between the side plates 30 of the guide frame 28. It is provided with a shaft 41 and the guide frame 28 on which an endless member composed of a transport chain 35 for intermittently feeding the seedling tray 21 vertically is mounted. At both ends of the vertical feed operating shaft 41, followers 42 that engage with the vertical feed cam 40 when the guide frame 28 moves to the left end or the right end are provided. The left end projects from the left side plate 30. Further, a swinging link 43 is fixed to the left end projecting portion of the vertical feed operating shaft 41, and a pair of left and right drive gears 44 having engaging teeth with which the swinging link 43 engages is provided on the projecting portion of the drive shaft 31. One-way clutch 4 for rotating 45 and the vertical feed operating shaft 41 only in the vertical feed direction of the seedling tray 21.
6 is fixed.

In the above-mentioned feeding device 22, when the guide frame 28 reaches the left or right movement limit, the follower 42 engages with the vertical feed cam 40 to slightly rotate the vertical feed operating shaft 41 to swing the swing link. 43 is rocked. Then
The swing of the swing link 43 causes either one of the drive gears 4 to move.
4, 45 rotate by one engaging tooth to rotationally drive the vertical feed drive shaft 31 by a fixed angle, whereby the transport chain 35 in the guide frame 28 vertically feeds by one pot portion 21a. To be done.

In this way, when the soil block seedlings S have been taken out from all the pot portions 21a arranged in a row, the seedling tray 21 is fed by one pitch in the vertical direction. In this case, according to the seedling tray feeding device 22 according to the present embodiment, the guide disc 55 is fixed to the vertical feeding drive shaft 31, and the seedling tray 21 is guided while rotating in synchronization with the drive sprocket 33 and the transport chain 35. Since the guide disc 55 is vertically fed, the seedling tray 21
In contrast, the tray 21 can be guided in the vertical direction with almost no sliding.

The guide disks 55 are attached to both ends of the drive shaft 31 so that the outer peripheral edge of the disk portion 57 is close to the tip of the engaging pin 36 (see FIG. 2).
The load from the engagement pin 36 is as much as possible to the guide disc 55.
The seed tray 21 is prevented from being deformed or twisted due to the deformation. Note that, as shown in FIG. 6, the guide disc 55 may be attached to the vertical feed drive shaft 31 so as to be rotatable around its axis. That is, the guide disc 55 in this case has the boss portion 56.
Is fitted onto the drive shaft 31 so as to be free to rotate, and the stop ring 60 regulates the axial movement of the boss portion 56.

As described above, even if the guide disk 55 is rotatably attached to the drive shaft 31, the guide disk 55 rotates while following the vertically fed seedling tray 21, so that the guide disk 55 is almost always attached to the tray 21. The seedling tray 21 does not slide, and the seedling tray 21 is not damaged or deformed by the sliding friction with the guide disk 55, and its vertical feeding function is not hindered.

7 and 8 show a second embodiment of the present invention. Hereinafter, members having the same functions as those of the first embodiment will be denoted by the same reference numerals, and the description thereof will be omitted. A configuration different from that of the first embodiment will be mainly described. In this case, the seedling tray feeder 22 includes a rectangular frame-shaped fixed frame 61 fixed to the main frame 19, and a horizontal support rail 62 is provided on the upper surface of the fixed frame 61.
By engaging a roller 63 provided on the lower surface of the guide frame 28 with the support rail 62, the guide frame 2
8 is mounted on the fixed frame 61 so as to be movable in the left-right direction.

A rack 64 extends in the left-right direction on the lower surface side of the central portion of the guide frame 28, and a pinion 65 meshing with the rack 64 is attached to a drive shaft of a transverse feed motor 66 provided in the fixed frame 61. There is. Therefore, when the transverse feed motor 66 is rotated in the forward and reverse directions, the fixed frame 61
On the other hand, the guide frame 28 can be driven to travel in the left-right direction.

Further, the seedling take-out device 23 of this embodiment is
The soil block seedling S in the pot portion 21a is put into the seedling tray 21.
Seedling pushing mechanism 67 for pushing out from the back side of the seedling and relay arm 68 for feeding the pushed seedling S to a planting cup (not shown).
Consists of The seedling pushing mechanism 67 has a pushing motor 69 that makes one rotation each time the guide frame 28 is laterally fed, a crank arm 70 that is driven to rotate by the pushing motor 69, and a rod-shaped rod connected to the tip of the arm 70. The pusher 71 is provided so as to be capable of retracting from the back surface side of the seedling tray 21 toward the inside of the pot portion 21a.

Therefore, a passage hole (not shown) through which the pusher 71 passes is formed at the bottom of each pot portion 21a in this case. Also in the present embodiment, the seedling tray 2 is attached to the vertical feed drive shaft 31 that is installed below the guide frame 28.
A guide disk 55 for guiding 1 in the longitudinal feed direction is provided. As shown in FIG. 9, this guide disk 55
Is driven by a set screw 58 penetrating the boss 56.
The drive shaft 31 is fixed to the outer peripheral surface of the drive shaft 31. Two peripheral grooves 72 are formed on the outer peripheral surface of the drive shaft 31.

However, by fitting the set screw 58 into one of the circumferential grooves 72, the guide disk 5
The position of 5 in the axial direction with respect to the drive shaft 31 can be adjusted. Therefore, by selecting one of the circumferential grooves 72 and changing the mounting position of the guide disk 55, it is possible to handle two types of seedling trays 21 having different pot sizes and pitches.

It should be noted that the above-mentioned respective embodiments are merely illustrative and not restrictive. That is, the scope of the present invention is shown by the above claims, and all the modifications that come within the meaning of the claims are included in the scope of the present invention. For example, although the guide disk 55 is shown as a simple disk-shaped one in the illustrated example, a ring-shaped one such as a bicycle wheel may be adopted instead of this disk. Further, the number of guide disks 55 (guide wheels) is not limited to two. Particularly, in the present invention, the guide wheel guides the seedling tray 21 with almost no friction, so that the effect becomes more remarkable when a large number of guide wheels are provided on the drive shaft 31.

As a winding transmission mechanism for vertically feeding the seedling tray 21, the sprockets 33, 34 are used.
It is possible to employ not only the chain transmission mechanism including the transport chain 35 and the conveyor chain 35, but also a belt transmission mechanism including a pulley and a V-belt, and a pinion and a timing belt. Further, as a locking member for locking the endless member constituting the winding transmission mechanism to the seedling tray 21, a claw-like shape for locking engagement holes formed at regular intervals on the left and right edges of the seedling tray 21. The locking member in this case may be provided so as to project from the outer peripheral surface of the endless member.

Further, the present invention can be applied not only to a walking type transplanter but also to a boarding type transplanter.

[0048]

As described above, according to the present invention,
Since the guide wheel guides the seedling tray in the vertical feed direction with almost no sliding friction, the seedling tray is held in the proper position without damage or deformation of the seedling tray or deterioration of the vertical feed function. It is possible (claims 1 to 3).

According to the fourth aspect of the present invention, the load from the engagement pin can be supported by the guide wheel as much as possible, so that the deformation of the seedling tray during vertical feeding can be more reliably performed. It can be prevented. Further, according to the invention of claim 5,
Despite having the function of guiding the seedling tray in the vertical feeding direction, one seedling tray feeding device can handle a plurality of types of seedling trays having different pot sizes and pitches.

[Brief description of drawings]

FIG. 1 is a perspective view of a seedling tray feeder according to a first embodiment.

FIG. 2 is an enlarged front sectional view of the feeding device.

FIG. 3 is a side sectional view of the feeding device.

FIG. 4 is a plan sectional view of the feeder.

FIG. 5 is an overall side view of a transplanter equipped with the feeding device.

FIG. 6 is a view showing how the guide disc is attached.

FIG. 7 is a side view of the seedling tray feeder according to the second embodiment.

FIG. 8 is a plan view of the feeder.

FIG. 9 is a view showing how the guide disc is attached.

[Explanation of symbols]

 1 Transplanter 21 Seedling tray 21a Pot part 21b Vertical groove part 21c Horizontal groove part 28 Guide frame 31 Vertical feed drive shaft 33 Drive wheel (drive sprocket) 35 Endless member (conveying chain) 36 Latching member (engaging pin) 55 Guide wheel ( Guide disk)

Claims (5)

[Claims] 1. A large number of pot parts (21) independent of each other.
a) Seedling trays (21) arranged in rows and columns, a guide frame (28) for movably supporting the seedling trays (21) in the vertical feed direction, and a drive wheel (33) on the front side in the vertical feed direction. A winding transmission mechanism provided at both left and right ends of the frame (28) so as to be positioned, and a locking member (36) provided on an endless member (35) of the winding transmission mechanism,
And the hook member (36) is provided with the seedling tray (21).
To the pot portion (21).
a) In a seedling tray feeding device of a transplanter in which the seedling trays (21) are intermittently vertically fed by intermittently driving one by one, the drive wheels (33) of the winding transmission mechanism are fixed. The drive shaft (31) is provided with a guide wheel (55) fitted in the vertical groove portion (21b) between the pot portions (21a) and guiding the seedling tray (21) in the vertical feed direction. A seedling tray feeder for a transplanter, which is characterized in that 2. The seedling tray feeding device of the transplanter according to claim 1, wherein the guide wheel (55) is attached to the drive shaft (31) so as to be immovable in the axial direction and non-rotatable around the axial center. 3. The seedling tray feeder for a transplanter according to claim 1, wherein the guide wheel (55) is attached to the drive shaft (31) so as to be immovable in the axial direction but rotatable about the axial center. 4. The hook member (36) includes a pot portion (21).
The guide wheel (55) is composed of an engagement pin that is cantilevered from the endless member (35) to the inside of the guide frame (28) so as to fit in the lateral groove portion (21c) between a). The seedling tray feeder for a transplanter according to claim 2 or 3, wherein the drive shaft (31) is attached to both ends of the drive shaft (31) in the axial direction so that the outer peripheral edge portion is close to the tip of the engagement pin. 5. The seedling tray feeder for a transplanter according to claim 2, wherein the guide wheel (55) is attached to the drive shaft (31) such that its axial position is adjustable. .