JP6181624B2 - Transplanter - Google Patents

Description

  The present invention relates to a vertical feed device for a seedling tray in a transplanting machine for transplanting a cell-molded seedling grown in a seedling tray onto a cocoon.

  2. Description of the Related Art Conventionally, a transplanting machine that takes out cell-molded seedlings grown from vegetable seedlings one by one from a seedling tray in a seedling tray in which concave and horizontal pot portions are arranged and formed and transplants them onto a cocoon is known (Patent Document 1). reference). In this transplanter, the seedling tray is placed on the tray mounting table, and is transported to the transplanting unit by driving the vertical conveying device. In the transplanting unit, the seedling tray is intermittently fed laterally and the cell molded seedling is taken out from the seedling tray. They are then transported onto the cage and transplanted.

Japanese Patent No. 2791377

In the vertical conveying device in Patent Document 1, an endless chain is wound between the left and right drive sprockets and the driven sprocket, and the opposing left and right endless chains are connected in the left-right direction by a vertical feed pin serving as a conveying member. The vertical feed pins are arranged at a predetermined interval in the transport direction. By driving the drive sprocket, the endless chain is rotated, and the vertical feed pin enters between the pot portion and the pot portion from below the seedling tray, and the seedling tray is conveyed in the vertical direction along with the rotation of the endless chain. The configuration was
However, when the seedling tray is transported, a vertical feed pin is inserted between the bowl part and the bowl part from below, and the vertical feed pin is an extension of the link pin that connects the link plate and the link plate constituting the endless chain. Therefore, the vertical feed pin may be caught when entering between the bowl portion and the bowl portion, or may be delayed by one row when it rides on.

That is, as shown in FIG. 8, the conventional vertical conveying apparatus is provided with an angle so that the angle in the conveying direction W on the upper side of the endless chain 40 is inclined with respect to the conveying direction V of the seedling tray 20. The member 45 entered from the lower part between the bowl part 20a and the bowl part 20a. And, when the vertical feed member 45 is initially engaged between the tooth portions of the drive sprocket 34 and the next vertical feed member 45 enters between the bowl portion 20a and the bowl portion 20a from below, It may interfere with the lower end of the bowl 20a, get caught, get delayed by one row, or get pinched between the upper and lower guides.
Therefore, the vertical feed member protrudes from the left and right endless chains so that it does not interfere when the vertical feed member enters between the pot portions and the pot portion so that the seedling tray is not crushed or delayed by one row. To.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
That is, according to claim 1, in the vertical transfer device of the transplanting machine for vertically transferring the seedling tray in which a plurality of pot parts for storing the cell-shaped seedlings are arranged vertically and horizontally to the transplanting unit, the vertical conveying device is a left and right toothed rotating member. Left and right endless belt guides, left and right endless belts wound between the toothed rotating member and the endless belt guide, and a plurality of longitudinal feed members for holding the seedling tray by the left and right endless belts The vertical feed member is disposed offset inward from the center in the vertical thickness direction of the endless belt.

According to a second aspect of the present invention, the endless belt is constituted by an endless chain, and the vertical feed member is arranged offset inward from a link pin that connects the link plate and the link plate constituting the endless chain. is there.
In Claim 3, the pitch of the link pin of the said endless chain and a link pin is comprised longer than the pitch of the bowl part of a seedling tray and a bowl part.
According to a fourth aspect of the present invention, the endless belt is constituted by a toothed belt, and the vertical feed member is arranged offset from the center in the vertical direction of the tooth portion for each predetermined number of teeth.
According to a fifth aspect of the present invention, a variable longitudinal feed member whose position can be changed is provided between the longitudinal feed member and the longitudinal feed member.

As effects of the present invention, the following effects can be obtained.
When transporting the seedling tray to the transplanting part, when the vertical feed member enters from between the pot part and the pot part of the seedling tray from below, it will not contact the bottom part of the pot part and skip the vertical feed by one row It was possible to eliminate such things as pushing the bowl up and crushing it. In addition, in the state where the endless belt is wound around the toothed rotating member, the seedling tray is not forcibly pulled by the vertical feed member, an excessive force is not applied to the seedling tray, and the conveyance resistance can be reduced. In addition, since the stop position of the vertical feed of the seedling tray is also stabilized, the seedling can be reliably conveyed from the seedling tray to the transplanting portion.

The side view which shows the whole structure of the transplanter which concerns on embodiment of this invention. The perspective view of a seedling supply part. The side view of a vertical feeder. The perspective view which wound the endless chain around the drive sprocket and the endless belt guide. The expansion perspective view of an endless chain. The perspective view of other embodiment of a vertical feed member. The side view which shows the attachment of the conventional vertical feed member, and the attachment of the vertical feed member of this embodiment. The side view which shows conveyance of the seedling tray by the conventional vertical feed member. Side surface sectional drawing which shows other embodiment of a vertical feed member. The side view which shows a toothed belt and a toothed pulley, (a) The side view which fixed the vertical feed member to the toothed belt with the rivet, (b) The side view which fixed the vertical feed member integrally to the toothed belt. The figure which shows the arrangement position of the 128-hole and 200-hole vertical feed member and variable vertical feed member. The partial top view and side view which provided the variable longitudinal feed member in the endless chain. The expansion perspective view of a variable longitudinal feed member. The partial top view and side view which provided the variable longitudinal feed member in the toothed belt.

  First, the entire structure of the transplanter 10 provided with the vertical conveyance apparatus 30 as one embodiment of the present invention will be described with reference to FIG. In the description, the front-rear direction is defined with the F direction as the front.

  The transplanter 10 includes a traveling unit 1, a seedling supply unit 2, a transplanter 3, and a control unit 4 at the rear, and constitutes a walking type transplanter. The traveling unit 1 mounts the engine 6 on the front part of the body frame 5, supports the transmission case 7 at the rear part of the body frame 5, and supports the transplant part 3 at the rear part.

  Front wheel support frames 8, 8 project forward and downward from both sides of the front portion of the body frame 5, and front wheels 9, 9 are rotatably supported at the front wheel support frames 8, 8. The rear wheel drive cases 11 and 11 protrude rearward and downward from both sides of the rear part of the body frame 5, and the rear wheels 12 and 12 are pivotally supported at the lower rear of the rear wheel drive cases 11 and 11. The power from the engine 6 is shifted through the transmission case 7 and the shifted power is transmitted to the rear wheels 12 through the rear wheel drive cases 11 and 11. The front wheel support frame 8 and the rear wheel drive case 11 are connected to an elevating mechanism through a link, and are moved up and down by following the upper surface of the eaves by the elevating mechanism, so that the planting depth of the cell molding seedling by the transplanting unit 3 is kept constant. Or, it can be moved up and down at the start and end of work.

  A pair of left and right handle support frames 15, 15 are extended rearward and upward at the rear end of the body frame 5, and are formed in a U shape in plan view at the rear ends of both handle support frames 15, 15. A handle 16 is attached. The steering unit 4 is formed on the handle 16. An inter-strain adjustment lever, a main transmission lever 17, a planting clutch lever 18, a lift lever 19 and the like are attached to the handle 16.

A seedling supply unit 2 is disposed at an upper portion between the handle support frames 15 and 15. As shown in FIGS. 2 and 3, the seedling supply unit 2 is formed by bending a substantially U-shaped pipe in a plan view, and is formed on the transport frame 31 on the tray mounting base 21, the empty tray storage base 22, and the vertical transport device 30. Is attached.
The tray mounting base 21 is used for mounting the seedling tray 20 and is arranged at a front low and a high rear in a side view. The empty tray storage table 22 is used for mounting the transplanted empty seedling tray 20 below the tray mounting table 21, and is formed by bending a rod-like body from the front lower part of the vertical conveyance device 30 to the upper and rear sides. Has been established. The vertical transfer device 30 is reciprocated left and right by power from a planting mission case (not shown), and transmits power from the planting mission case to the vertical transfer drive shaft 32 to vertically feed the seedling tray 20. The configuration of the vertical conveyance device 30 will be described later. The seedling tray 20 is made of a synthetic resin having flexibility, and has a plurality of concave bowl portions 20a, 20a,...

  The transplanting unit 3 is arranged in front of the vertical conveyance device 30 and takes out a cell-molded seedling (not shown) from the pot portion 20a of the seedling tray 20 placed on the tray mounting base 21 of the seedling supply unit 2. A seedling extracting device 23 and a planting device 24 for receiving the cell-molded seedlings taken out by the seedling extracting device 23 and planting the seedlings on the ridge surface are provided. The seedling extraction device 23 is provided with a seedling extraction claw on the extraction arm and swung back and forth to take out the cell-molded seedling from the pot portion 20a of the seedling tray 20, and into the transplantation claw provided on the planting arm of the planting device 24. discharge. The transplanting nail conveys the cell-molded seedling from the transplanting part 3 to the upper surface of the cocoon by moving the planting arm up and down, and opens the transplanting nail and transplants it on the cocoon. After transplanting, the soil is pressed from both sides by the left and right pressure wheels 29 and 29 provided at the lower part of the handle support frame 15.

  As shown in FIGS. 2 and 3, the vertical conveying device 30 includes a tray frame 21, an empty tray storage table 22, an upper tray presser 25, a lower tray guide 26, a drive shaft 32, and a driven shaft 33 on a conveyance frame 31. The conveyance frame 31 is attached to the handle support frame 15. In a side view, the driven shaft 33 is disposed below the lower end of the tray mounting base 21, the lower tray guide 26 is disposed on the front lower side on the extension of the tray mounting base 21, and the drive shaft is positioned on the lower front portion of the lower tray guide 26. 32 is arranged.

As shown in FIGS. 2 and 4, drive sprockets 34 and 34 serving as toothed rotating members are fixed on both sides of the drive shaft 32, and disk-like endless belt guides (follower) are provided on both sides of the driven shaft 33. Driving wheels) 35 and 35 are fixed. Endless chains 40 and 40 are wound around the drive sprockets 34 and 34 and the endless belt guides 35 and 35 as endless belts, respectively. The endless belt can be an endless toothed belt 50, which will be described in detail later.
The upper tray retainer 25 is disposed between the left and right endless chains 40 and 40 at an appropriate interval in the left-right direction, and is an upper tray mounting base from the front lower portion of the drive sprocket 34 along the outer periphery in a side view. 21 is extended upward at the bottom. The empty tray storage base 22 extends downward from the front lower portion of the drive sprocket 34 from the front end of the upper tray retainer 25 along the outer periphery, and extends obliquely rearward and upward from the lower portion of the drive sprocket 34.

  As shown in FIGS. 4 and 5, the endless chain 40 includes left and right link plates 41 and 41 and link pins 42 that connect the left and right link plates 41 and 41. The other left and right link plates 41 and 41 of the other set are inserted between the left and right link plates 41 and 41, and the link pins 42 are inserted and connected to both. Thus, the endless chain 40 is formed by connecting a large number of sets in an endless manner. However, the structure of the chain is not limited to the offset type, and may be a pin link type or a joint link type. And the tooth | gear part of a sprocket is meshed | engaged between the link pin 42 and the link pin 42, and it is set as the structure which the endless chain 40 rotates between the drive sprocket 34 and the endless belt guide 35. FIG.

Further, an attachment link plate 44 is fixed to the side surface of the link plate 41 for each of several sets of link plates 41 in the transport direction. That is, in the left and right endless chains 40, 40, the mounting link plates 44, 44 are fixed so as to face each other of the inner link plates 41, 41, and the vertical feed member 45 is fixed to the left and right mounting link plates 44, 44. Is fixed. In the present embodiment, the vertical feed member 45 is configured such that a pin is horizontally connected between the left and right attachment link plates 44. However, as shown in FIG. 5, the pins may protrude from the left and right attachment link plates 44, 44 in the horizontal direction in the horizontal center without being connected. Further, the vertical feed member 45 is not limited to a round bar-like pin, and may be configured such that a flat bar protrudes or is horizontally mounted as shown in FIG. Further, as shown in FIG. 9 (b), the number of pins is not limited to one, and a plurality of pins may be projected or horizontally mounted, and are stably brought into contact with the outer periphery of the pot portion 20a of the seedling tray 20. I hope you can.
The shaft diameter of the vertical feed member 45 is configured to be slightly larger than the distance between the innermost portion of the concave groove between the pot portion 20a and the pot portion 20a arranged in the vertical direction of the seedling tray 20. Further, the pitch L2 between the link pin 42 and the link pin 42 of the endless chain 40 is configured to be slightly longer than the pitch L1 between the pot portion 20a and the pot portion 20a of the seedling tray 20 (FIG. 7C, L2> L1). ).

  Thus, the endless chains 40, 40 are connected between the attachment link plates 44, 44 arranged on the opposing surfaces of the left and right endless chains 40, 40, and hooked on the pot portion 20a of the seedling tray 20. A plurality of vertical feeding members 45 serving as conveying members (for holding and forcibly conveying) are provided at predetermined pitch intervals, and the vertical feeding members 45 are brought into contact with the pot portion 20a of the seedling tray 20 to forcibly longitudinally feed. I am trying to send it. In this vertical feed, the seedling tray 20 is intermittently laterally fed, and once the horizontal row of cell-formed seedlings is taken out by the seedling picking claw, the vertical feed is carried out one stage, and the seedling removal in the next row is performed. is there.

  The vertical feed member 45 is attached to the attachment link plate 44 at a position offset with respect to the link pin 42. That is, when the endless chain 40 is wound around the sprocket 34 and the endless belt guide 35, the longitudinal feed member 45 is positioned more centrally than the link pin 42 (in the up and down direction inside in the wound state) when viewed from the side. It is fixed to the mounting link plate 44. Specifically, the attachment link plate 44 is formed in a substantially triangular shape in a side view, link pins 42 and 42 are attached in the vicinity of the top (outer periphery) side apex, and the vertical feed member 45 is attached to the attachment link plate 44. It is rotatably supported near the apex on the lower (inner circumference) side. Thus, the longitudinal feed member 45 is disposed so as to be located on the inner side (center side) of the link end 42 in the annular endless chain 40.

  Further, the longitudinal feed member 45 may be configured as shown in FIG. That is, the vertical feed member 45 is formed by bending a rod-like body in a substantially U shape when viewed from the front, using the horizontal part at the center of the left and right as a conveying member, and directly connecting both ends directly to the link plates 41 and 41 inside the left and right endless chains 40 and 40. A configuration may be adopted in which the conveyance portion of the vertical feed member 45 (the portion that contacts the bowl portion 20a) is positioned on the inner side (center side) than the link pin 42. However, the longitudinal feed member 45 may be formed by projecting from the left and right link plates 41 and 41 by bending a rod-like body into a substantially L shape in a front view.

  Further, the endless belt can be constituted by a toothed belt 50. That is, as shown in FIG. 10, the toothed belt 50 is formed with tooth portions 50a, 50a... Projecting inwardly at predetermined intervals on the inner peripheral surface side of the ring-shaped belt, and becomes a toothed rotating member. The teeth of the toothed pulley 34 can be engaged with each other. One end of the longitudinal feed member 45 is fixed for every several tooth portions 50a, and the longitudinal feed members 45, 45... Are horizontally mounted between the left and right toothed belts 50, 50 with a predetermined interval.

  For example, in FIG. 10A, the longitudinal feed member 45 is fixed to the toothed belt 50 by positioning one end of the longitudinal feed member 45 between the tooth portion 50a and the tooth portion 50a by means of a rivet 51 or the like. Is fixed. Specifically, the vertical feed member 45 is fixed by a rivet 51 or the like by positioning the vertical feed member 45 between the tooth portions 50a and the tooth portions 50a for every predetermined number of teeth of the toothed belt 50. It is set as the structure arrange | positioned offset from the center of a height direction inside. In addition, concave portions 34a, 34a,... Are formed on the outer periphery of the toothed pulley 34 with which the vertical feed member 45 meshes with the shape and interval of the vertical feed member 45. Thus, the longitudinal feed member 45 can be easily attached to the endless belt.

As another embodiment for fixing the longitudinal feed member 45 to the toothed belt 50, as shown in FIG. 10 (b), convex portions 50b, 50b... Are provided at predetermined intervals on the inner periphery of the toothed belt 50. The insertion hole is formed through the convex portion 50b in the left-right direction, and one end of the vertical feed member 45 is inserted into the insertion hole and fixed. In addition, concave portions 34b, 34b,... Are formed on the outer periphery of the toothed pulley 34 with which the vertical feed member 45 meshes with the shape and interval of the convex portions 50b. Thus, the longitudinal feed member 45 can be easily attached to the endless belt. The offset amount of the vertical feed member 45 is the same as described above.
Thus, by using the toothed belt 50 as an endless belt, the number of parts can be reduced, and the weight and noise can be reduced.

  In such a configuration, when the seedling tray 20 is placed on the tray mounting base 21 and the vertical conveyance device 30 is driven, the upper surface of the seedling tray 20 is guided by the upper tray presser 25. On the other hand, the longitudinal feed member 45 supported by the left and right endless chains 40 and 40 (or the toothed belts 50 and 50) is formed between the lower end of the tray mounting base 21 and the rear portion of the lower tray guide 26 as shown in FIG. Pass through the gap between the front and the bottom. When this vertical feed member 45 passes through the gap, it enters between the pot portion 20a and the pot portion 20a from below the seedling tray 20, and at the time of vertical feed, the seedling tray 20 is forced to come into contact with the rear surface of the pot portion 20a. It is supposed to be transported.

  When the vertical feed member 45 enters between the bowl portion 20a and the bowl portion 20a from below, the pitch between the link pins 42 and 42 and the pitch between the bowl portions 20a and 20a are substantially equal to each other. Sometimes happened. That is, as shown in FIG. 7 (a), the vertical feed member 45 can be conveyed in a straight line so as to enter the substantially upper end of the innermost groove between the bowl 20a and the bowl 20a. As shown in FIG. 7 (b), when the front longitudinal feed member 45 meshes with the drive sprocket 34 and the rear longitudinal feed member 45 enters between the bowl 20a and the bowl 20a, the bowl 20a. It could get caught on the bottom edge of.

  In this embodiment, as shown in FIG.7 (c), the pitch L2 of the link pin 42 and the link pin 42 is comprised longer than the pitch L1 of the bowl part 20a and the bowl part 20a. By comprising in this way, in the linear part of the endless chain 40, when the vertical feed member 45 enters between the bowl part 20a and the bowl part 20a, it can enter smoothly without hitting the lower end of the bowl part 20a. Specifically, the vertical feed member 45 is arranged for each of the n link plates 41, and between the bottom of the n-th bowl 20a and the bottom of the (n + 1) -th bowl 20a (the distance between them is L3). The vertical feed member 45 comes in. That is, the length (n × L2) from the vertical feed member 45 between the bowl 20a and the bowl 20a to the nth link plate 41 and the length (n × L2) to the nth bowl 20a. The difference (n × L2−n × L1) from L1) is set to be equal to or less than L3 (0 <n × (L2−L1) <L3). In this way, the longitudinal feed member 45 can easily enter between the bowl 20a and the bowl 20a.

  Further, as shown in FIG. 7D, when the longitudinal feed member 45 is disposed at a position offset from the link pin 42 toward the rotation center side, and the endless chain 40 is wound around the drive sprocket 34, The distance between the vertical feed member 45 and the vertical feed member 45 is shorter than that in a straight line. The distance between the vertical feed member 45 and the vertical feed member 45 shortened by this winding is the difference in pitch (L2) when the seedling tray 20 is curved as it is wound around the endless chain 40. -L1) is set to be offset. That is, in the state where the endless chain 40 is wound around the drive sprocket 34, the vertical feed member 45 is offset toward the center side, so that the upper end of the groove of the seedling tray 20 (the connecting portion 20b) has a short diameter. On the side, it is located between the turning locus of the link pin 42 of the substantially arc-shaped endless chain 40 and the turning locus of the longitudinal feed member 45, and the pitch difference (L2-L1) is offset. Therefore, when the seedling tray 20 is pushed and transported by the vertical feed member 45, it is stretched or compressed and no excessive force is applied, and the transport resistance is transported with a small amount.

  In addition, when the seedling tray 20 curved as the endless chain 40 is wound is transported, the bowl portion 20a and the connecting portion 20b of the pot portion 20a and the longitudinal feed member 45 located on the inner peripheral side thereof are: It is configured to lie on the same radial line passing through the center of the drive shaft 32.

  Even when the interval between the link pin 42 and the link pin 42 of the endless chain 40 is the same as the conventional interval, the pitch between the bowl 20a and the bowl 20a is the same (L1 = L2), and the longitudinal feed member 45 The distance between the longitudinal feed member 45 and the longitudinal feed member 45 can be set to the same length as described above in the state of being wound by offsetting the link pin 42 from the link pin 42 to the rotation center side. The seedling tray 20 can be prevented from being stretched or compressed during transportation.

  As shown in FIGS. 11, 12, and 13, a variable longitudinal feed member 46 whose feed position (support position) can be changed is provided between the longitudinal feed member 45 and the longitudinal feed member 45, It is also possible to reduce the surface pressure on the pot 20a of the seedling tray 20 to suppress crushing and to stabilize the seedling removal position. Then, by making it possible to change the feed position of the variable longitudinal feed member 46, it is also possible to transport seedling trays 20 having different pot sizes and arrangement numbers.

That is, in the seedling tray 20, there are several kinds of seedling trays 20 in which the length and width of one sheet are constant, but the size of the pot portion 20a is different and the number of pot portions 20a is vertical and horizontal. A seedling tray 20 having a pot portion 20a having a size corresponding to the type is used.
For example, as shown in FIG. 11 (a), in the case of a 128-hole seedling tray 20, the vertical feed member 45 is positioned every four rows of the pot portion 20a, and as shown in FIG. In the case of the seedling tray 20, the vertical feed member 45 is positioned and supported and transported every five rows of the pot portion 20a. However, the front and rear feed positions in the transport direction are not applied. Thus, when it is the structure which supports the seedling tray 20 for every 4 rows or 5 rows, between the vertical feed member 45 and the vertical feed member 45 hangs down by the weight of the pot part 20a, a seedling removal position shifts, or vertical feed The load of the support part by the member 45 may become large, and the bowl part 20a may deform | transform.

  Therefore, the variable longitudinal feed member 46 is disposed between the longitudinal feed member 45 and the longitudinal feed member 45, and the load is distributed by applying a load to the longitudinal feed member 45 and the variable longitudinal feed member 46, thereby preventing deformation and the like. I am doing so. As shown in FIGS. 12 and 13, the variable longitudinal feed member 46 is bent at both sides of the rod body in a crank shape to form pivot shaft portions 46 a and 46 a at both ends, and the pivot shaft portions 46 a and 46 a. Is pivotally supported on the link plates 41 of the left and right endless chains 40, 40 facing each other. This axial support position is arranged on the same axis as the link pin 42. An upper restricting body 47 formed in an inverted V shape is disposed above the shaft supporting portion, and a triangular lower restricting body 48 is disposed below the shaft supporting portion.

  In this way, the variable vertical feed member 46 can be held at the transport front position and the rear position by the upper restricting body 47 and the lower restricting body 48, and the variable vertical feed member 46 can be rotated forward and backward. It can be switched between position and rear position. Although the upper restricting body 47 and the lower restricting body 48 are arranged and fixed at the attachment position of the vertical feeding member 45, the vertical feeding member 45 may be fixed integrally to the link plate 41. Good. In other words, in this embodiment, the vertical feed member 45 and the variable vertical feed member 46 use the same parts to reduce the types of parts to reduce costs, but the fixed amount of the vertical feed member 45 is changed in position. It can also be set as the structure which cannot be performed.

  Further, the longitudinal feed member 45 and the variable longitudinal feed member 46 can also be provided on the toothed belt 50. In this case, as shown in FIG. The lower restricting body 48 is attached at the same position as the endless chain 40. The offset amounts of the vertical feed member 45 and the variable vertical feed member 46 are the same as described above.

  In such a configuration, when the seedling tray 20 having 128 holes is supplied to the transplanter 10 to perform the transplanting operation, the variable vertical feed member 46 is held in the forward position, and the drive sprocket 34 is rotated to rotate the seedling tray 20. 11 (a) and FIG. 12 (the direction of the arrow is the tray transport direction), the vertical feed member 45 enters and is transported between the first row and the second row, Next, two rows are skipped and the variable longitudinal feed member 46 enters and supports the third and fourth rows while feeding, and then skips two rows and between the fifth and sixth rows. The vertical feed member 45 enters. Thereafter, the seedling tray 20 is fed while the variable longitudinal feeding member 46 and the longitudinal feeding member 45 alternately enter and support every two rows.

  When the seedling tray 20 having 200 holes is supplied to the transplanter 10 to perform the transplanting operation, the variable vertical feed members 46, 46,... 11b and 12, as shown in FIGS. 11 (b) and 12, the vertical feed member 45 enters between the first row and the second row to carry it while supporting it, and then skips two rows. The variable longitudinal feed member 46 enters between the third row and the fourth row. Next, three rows are skipped and the vertical feed member 45 enters between the sixth row and the seventh row. Thereafter, two rows are skipped and the variable longitudinal feed member 46 enters. Next, three rows are skipped and the vertical feed member 45 enters, and this is repeated and conveyed while supporting the seedling tray 20.

  Thus, the variable vertical feed member 46 is positioned between the vertical feed member 45 and the vertical feed member 45 to support the seedling tray 20, and the surface pressure received by the seedling tray 20 can be reduced as compared with the conventional case. The pot part 20a is not crushed, and the seedling removal position can be stabilized. Then, only by changing the holding position of the variable vertical feed member 46, it becomes possible to convey the seedling tray 20 with 128 holes and 200 holes. For each type of the seedling tray 20, an endless belt, a drive sprocket 34, etc. A variety of vegetable seedlings can be stably transplanted without change.

DESCRIPTION OF SYMBOLS 3 Transplanting part 10 Transplanting machine 20 Seedling tray 20a Bowl part 30 Vertical conveyance apparatus 34 Toothed rotating member (drive sprocket, toothed pulley)
35 Endless belt guide 40 Endless chain 41 Link plate 42 Link pin 45 Vertical feed member 46 Variable longitudinal feed member

Claims (5)

  In a vertical transfer device of a transplanting machine that vertically transfers a seedling tray in which a plurality of pot parts containing cell molded seedlings are arranged vertically and horizontally to a transplanting unit, the vertical transfer device includes left and right toothed rotating members, left and right endless belt guides, The left and right endless belts wound between the toothed rotating member and the endless belt guide, and a plurality of vertical feed members for holding the seedling tray by the left and right endless belts, The transplanter is arranged to be offset inward from the center in the vertical thickness direction of the endless belt.   2. The endless belt is constituted by an endless chain, and the longitudinal feed member is disposed offset inward from a link pin that connects the link plate and the link plate constituting the endless chain. The transplanter described in 1.   The transplanter according to claim 2, wherein the pitch between the link pin and the link pin of the endless chain is longer than the pitch between the pot portion and the pot portion of the seedling tray.   The endless belt is constituted by a toothed belt, and the vertical feed member is arranged offset from the center in the vertical direction of the tooth portion for each predetermined number of teeth. Transplanter. 5. The transplanter according to claim 1, wherein a variable longitudinal feed member whose position is changeable is provided between the longitudinal feed member and the longitudinal feed member.

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