DE1657325A1 - Method and device for producing plant strips in the form of a closed casing containing seeds or seedlings - Google Patents

Description

Hollister,

California 95025 / V.St.A ,

Patent registration Process and device for the production of Plant strips in the form of a seed or Closed envelope containing seedlings

The invention "relates to a method and an apparatus for the production of plant strips in the form of seeds or closed envelope containing seedlings.

It is "known for sowing seeds and planting of seedlings in or on the ground to lay out plant strips in the form of a closed envelope in which the seeds are placed or seedlings embedded or to which they are attached at certain intervals. In the patent application W 42 945 Hl / 451 describes a planting strip of this type and discloses, among other things, the manner in which a certain material is used for such Plant strips made from a water-soluble polyethylene oxide available under the registered trade name "RADEL" Union Carbide Company is to be used.

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Although the polyethylene oxide is water soluble, you can strips of this material can be slightly moistened with water to protect the planting strip without losing its tensile strength to affect noticeably to convey a certain adhesiveness for closing the envelope. If then the planting strip If the seeds or seedlings are laid in or on the ground, it will very soon be affected by the moisture in the soil dissolved so that only the seeds or seedlings remain in the soil.

The invention is based on the property of this material, when moistened with a little water, a certain adhesiveness to assume from and should enable a method for the production of plant strips, the arrangement of the seeds or seedlings with precise mutual spacing ensured in a particularly simple manner · The method is intended to follow the invention can be carried out either by hand or by means of a device for acceleration and increased accuracy which is also part of the subject matter of the invention and enables thousands of meters of planting strips per working day produced with a precise mutual spacing of the seeds and / or seedlings at a high working speed can be.

Accordingly, the invention consists essentially in that the plastic hand used to produce a planting strip of the type mentioned is at least on one side the longitudinal edges by slightly moistening them without affecting

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its tensile strength made adhesive, then too is folded lengthways to an approximately channel-shaped cross-section and in the folded band the seeds or sprouts in 'determined Distances are inserted, whereupon at least the two longitudinal edges of the tape by pressing together glued and the tape is closed to a casing containing the seeds encapsulated, which is only through the adhesion achieved by moistening the plastic is kept closed and od on a winding drum. is wound up. The plastic strip is preferably used for its treatment on a longitudinal movement path moved lengthways and here after its lengthwise folding with the same r at a moderate speed past a job where the seeds or sprouts from a store in evenly spaced individually picked up by suction and carried to a delivery point, where they through respective interruption of the suction effect are again caused to fall at regular intervals.

In a preferred embodiment of the invention, this job is formed by a feeder device, one by means of a drive rotatable disc with several support arms attached to its circumference in the radial direction for a suction nozzle for picking up a single seed from a part of the rotatable disc ■ Circumferential storage container and a switchover device has, through which the suction nozzles on their movement

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away in the area of the storage container and then to a delivery point for the seeds on the longitudinally folded Belt with a suction air device, but separated from the suction air device in the area of the delivery point and with the outside air are connected.

The invention enables a perfect machine arrangement of only a single seed or seedling in quick succession and with exactly the same spacing in the plant strip. This can be the plastic tape conveyed adhesiveness can be used at the same time to glue the seeds or seedlings to the tape, so that their distances cannot change. Meanwhile, the middle part of the belt can also be kept dry, so that E.g. elongated seeds can erect themselves.

The invention is based on the preferred embodiment of the illustrated in the drawing as an example Device for carrying out the method according to the invention described «

In the drawing show:

Fig. 1 is a diagrammatic view of the device; 2 shows an enlarged cross-section along the line

2-2 of Fig. 1 $
3 shows the enlarged view of a detail from the section line 3-3 of FIG

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FIG. 4 shows a plan view of the area of the device containing the pulling and closing rollers;

Mg. 5 a piece of a finished planting strip in side view;

Fig. 6 is a cross-section along line 6-6 of Fig. 5;

Fig. 7 is a partial plan view of the device in the area of the feed device for the seeds;

Mg. 8 is a bottom view of a fixed connecting member the delivery device;

Fig. 9 a section along the line 9-9 of Fig. 7 with the central part of the delivery device in side view, and

Mg, 10 the middle part of the feeder in the vertical rope cut.

According to Mg. 1, the device is initially assigned a supply roll 11, onto which a tape 10 made of polyethylene oxide is wound, which is pulled off the roll 11 for processing into the planting strip. Instead of the roller 11, however, another feed device for the plastic strip 10 could also be arranged. For example, the band 10 could also come directly from the machine used for its manufacture. In the embodiment shown, the supply roll 11 is freely rotatable, but mounted with enough friction that unintentional running off of the tape 10 is prevented.

The plastic tape 10 can htll baw. colorless and duroh-109844/0024

be visible, but it can also be colored and transparent or be opaque. To pull the tape 10 from the supply roll 11 is the device with two pulling rollers 12 and 13 provided, which at the same time a pressure device or locking rollers for Yersohliessen the finished planting strip Form H into a closed envelope by G-pressing the tape edges together. The rollers 12, 13 are not by one motor shown and are, according to FIG. 4, each mounted on the stub axle 15 »16 of a support arm 17» 18, which on the base plate 20 around a pin 21. b «w. 22 rotatable iat. The two support arms 17, 18 are connected to one another by a spring 23 connected, which pulls the support arms together, so that the tension and base rollers 12, 13 with their circumference 24, 25 in

■ ■ ·

close frictional contact with the belt 10 are kept. Therefore, when the rollers 12, 13 are driven, they pull that Plastic tape from the supply roll 11 in a movement path, which runs approximately along the longitudinal center line of the base plate 20.

From the supply roll 11, the belt 10 first runs over a tensioning roller 26 to a moistening device 27.This can consist of a water container 28 and a somewhat inverted U-shaped moistening element 29 made of felt or another swqgable material, which with its legs 30, 31 is immersed in the water in the container 28 and its upper web 32 is in contact with the tape 10 that is passed through. The attachment member 29 can be arranged on a wire bracket 33, which is in the sleeve 34 on the base

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plate 20 is pivotably mounted and the moistening member by resting its web 32 on the tape with this in contact. In this way, the plastic edge 10 is through the moistening member 29 is held taut at the same time and transfers only a small amount of moisture to the band 10, which it passes through Absorbs capillary action from the water tank 28. The water-

z. B.
The amount is extremely small for a tape length of about 1500 meters and corresponds roughly to a pinger hat filling, which ensures that the plastic tape is only moistened to the extent necessary to make the tape sticky without reducing its tensile strength. A color can be added to the water in the water tank 28, as a result of which an excessively high moisture absorption is indicated by the tape. The absorption of moisture can also be restricted to certain locations of the band 10, depending on which type of seeds are to be contained in the finished planting strip. Ζ · Β, the moistening member 29 can be designed so that the middle part of the band is kept dry and this enables non-round seeds to align themselves when placed on the band so that their longitudinal axis runs parallel or approximately parallel to the band edges . For round seeds that tend to roll, on the other hand, the moistening area can be selected so that when they are applied to the tape they fall onto a sticky part of the same and are immediately held.

The plastic 1 09844/0024 comes from the moistening device 27

band to a molding device 35, which according to FIG. 2 from a Molded member of approximately V-shaped "or channel-shaped cross-section with two mutually inclined and converging at the tip 38 Walls 36, 37 breathed. The walls 36, 37 can be used to guide the band 10 with inwardly retracted, the tape overlapping guide edges 36a, 37a be provided, which prevent the tape to the left or right out of the Mold member 35 migrates upwards, and ensure that the tape is held in the correct central position in the mold member will. This is essential and conditioned that the guide edges 36a, 37a are designed so that they are when passing through the Band through the form member 35 on each side of the same allow only very small deviations up or down · The form member 35 can also be designed so that it is essentially flat at its inlet end 39 and only behind it gradually assumes the pronounced cross-sectional shape according to FIG also transmitted approximately V-shaped band cross-section.

With this cross-sectional shape, the plastic band 10 then passes a feed device 40 for the seeds, behind which a second molding device 41 is arranged with two transversely positioned mold plates 42, 43, which are spaced apart extend from each other and with passage openings 44 and 45, respectively are provided for the tape. Between the first molding device 35 and the second molding device 41, however, nooh additional molded members be arranged. For example, an additional molding member can be attached to the delivery device 40.

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The passage opening 44 of the mold plate 42 has, like Pig «3 shows roughly the same dimensions again as the cross section of the standard member 35 according to Pig * 2, while the passage opening 45 the mold plate 43 is more U-shaped than V-shaped, so that the tape gradually has a cross-sectional shape with two halves assumes that can be glued together when the tape passes through the tension and closing rollers 12, 13 A counting device 47 can be arranged on the two rollers 12, 13 which enables an accurate measurement of the length of the finished planting strip 14.

From the pulling and closing rollers 12, 13 the is the seeds 46 containing plant strips 14 of a winding roll 47 supplied, which is preferably provided with a conical winding core 48 is provided.

The delivery device 40 forms one of the most important features of the device. It is in the illustrated embodiment designed so that only one seed is ever delivered to the V-shaped plastic belt 10, wherein The seeds are laid out in the band with an even distance from each other, depending on the speed of movement depends on the tape. The feed device 40 has a rotatable disc 50, of which a plurality of radially directed Support arms 51 protrude in the form of tubes that are at the outer end are each provided with a suction nozzle 52 for picking up a single seed. The suction nozzles 52 are detachable

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attached to the tube 51 so that depending on the type and Size of the seeds suction nozzles with different holding cross-sections can be used. Preferably, the holding crossover is the suction nozzles are slightly smaller than the size of the seeds, so that it is guaranteed that only one Seed can be sucked from each nozzle. The holding opening of the suction nozzles 52 can depending on the size and weight as well depending on the type of seeds to be introduced into the band at the lower end of the nozzle, laterally or at the front of the nozzle or at different angles to the arc of movement of the tubes 51 be arranged *

The disk 50 with the tube 51 rotates in the illustration naäa. Pig. 1 and 7 counterclockwise and is in the range of 270 ° "to 180 ° in front of the delivery point for the seeds from a fixed storage container 53 in the form of a circularly curved channel with the side walls 58 and 59 and the end walls 54» 55, in which the seeds 46 to be picked up by the suction nozzles 52 are in the form of a bulk. The storage container 53 can always be kept filled by a container (not shown) The end walls 54 and 55 of the storage container 53 are provided with cutouts 56 and 57 for the passage of the suction nozzles 52. Between the disk 50 and the storage container 53 there is a fixed wall 60, which with its upper edge one the disc

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50 forms circumferential Noeken track 61 over its entire circumference of 360 ° for guiding the small tubes 51, which are hinged to the disk 50 in such a way that they can move up and down. Me tubes 51 are held in contact by weak springs 64 and the weight of the suction nozzle with the cam track 61 of the wall 60 · The cam track 61 maintains the Röhrohen 51 generally horizontal, but is absorbed in the area of the supply channel 53 so that the tubes 51 with the suction nozzles 52 are drawn down into the storage channel 53 in order to receive one seed 4-6 at a time.

A vibrating device 62 of known type is attached to the storage chute 53, which causes the of each suction nozzle 52 is immediately closed again behind the suction nozzle when it passes through the seeds, so that the next suction nozzle will certainly pick up a seed and not be moved in an empty furrow. In the 180 ° circumferential area between the end wall of the storage channel 53 and the discharge point 40a, a collecting channel can be used 63, in which, for example, if two seeds are picked up by a suction nozzle 52, one of them will not be correct captured seed can fall into it. However, it has been shown in practice that such a collecting channel in general is not necessary.

As shown in FIGS. 8 and 9 in connection with FIG. 1, the rotatable disk 50 opens into at least one in the middle

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Part overlapping connection member 65 four Kohrlinien 66, 67, 68 and 69, of which the pipe 66 forms a suction line connected to a suction air device, while the line 67 with a vacuum gauge and the line 69 with a pressure medium source, which is about an overpressure of two atmospheres supplies are connected. In contrast, the pipe 68, connected to the outside air, represents a ventilation line. The connection member 65 forms a reversing device and is arranged so closely above the rotatable disk 50 that a thin layer of lubricant can be arranged between the mutually facing surfaces of the connection element and the rotatable disk, which also serves as a gas-tight seal. As shown in FIG. 8, the connection member 65 has a lower surface 70 with a groove 71 in the form of a partial circle into which the two pipelines 66 and 67 with their openings 74 and 75 open. In addition, a shorter curved groove 72 is arranged on this lower surface, into which the line 68 opens. In this embodiment, the groove 71 is connected to the suction air device and the vacuum gauge in an angular range of slightly less than 270 °. The pipeline 69 _f, which is connected to the pressure medium source, opens * -t- with the opening 73 on the lower surface 70 of the connecting member,

The rotatable disk 50 is shown in FIGS. 7 and 10 with six provided axially extending air ducts 77 which are arranged at regular intervals from one another and each have a flexible connection 78 are connected to one of the tubes 51 and of which each bore in a Drehbereioh of about 270 °

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via the hat 71 of the connection member 65 and the suction line is connected to the suction device. When rotating the disc 50 is therefore each suction nozzle 52, just before they hit the front end wall 54 of the storage channel 53 arrives with the Suction device connected so that they pass through through the supply chute a seed 46 is sucked in and this carries up to the delivery point 40a. At this point or very shortly before the connection with the suction air device is established interrupted and the suction nozzle in question over the short groove 72 connected to the ventilation line 68, so that the seed previously carried by the suction nozzle falls off and gets into the V-shaped folded band 10 · If the concerned Suction nozzle has passed the delivery point 40a, it is connected via the opening 73 to the pipeline 69 which it supplies a short but powerful jet of pressure medium, so that a possible clogging of the nozzle by seizing a seed core or is avoided by sucking in foreign matter.

The drive for the rotating disk 50 is synchronized with the drive for the tension and locking rollers 12, 13 and can be kept in a certain mutual relationship The disc and the clusters can rotate at the same or different rotational speeds.

When the device is in operation, the plastic strip 10 is pulled off the supply roll 11 by the tension and base rollers and goes through the moistening point 27 as well as the sole-

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send through the form member 35 past the delivery device 40, on which the seeds individually and at intervals are dispensed from each other into the V-shaped folded tape 10. The tape is then made after passing through the molding device 41 closed and glued by the pulling and closing rollers, whereupon it is wound onto the winding roll 48. The feed device 40 works in such a way that each suction nozzle 52 is inserted when passing through the storage channel 53 Seed picked up and then at the delivery point 40a as a result Connection of the suction nozzle with the ventilation line released and falls into the longitudinally folded band 10.

The invention is not restricted to the illustrated embodiment, which can be changed in certain respects can without departing from the scope of the invention.

Claims ι 1098U / 002A

Claims (1)

Claims 1. J Process for the production of planting strips containing seeds or germ-1-inge from a tape consisting of water-soluble plastic, characterized in that the plastic tape is made adhesive on one side at least at the longitudinal edges by slightly moistening it without impairing its tensile strength, then is folded longitudinally to an approximately channel-shaped cross-section and the seeds or seedlings are inserted into the folded band at "certain intervals, whereupon at least the two longitudinal edges of the band are glued together by pressing them together and the band is closed to form a casing containing the seeds encapsulated, which is merely covered by the The adhesiveness achieved by moistening the plastic is kept closed and is wound onto a winding drum or the like. 2. The method according to claim 1, characterized in that the plastic tape for its treatment on a longitudinal Movement path moved lengthways and here after its longitudinal folding at a constant speed at a work site is passed, on which the seeds or seedlings from a store at regular intervals individually taken up by suction and carried to a delivery point, at which they are interrupted by respective interruption of the suction are again made to fall off at regular intervals, 1098 A U 0 02V 3. The method according to claim 2, characterized by that the seeds or seedlings, while they are exposed to the suction, are moved on a circular path. 4. The method according to any one of the preceding claims, characterized in that the plastic tape in front of his Longitudinal fold is moistened all over one side, so that the seeds or sprouts are placed in the Tape to be adhered to the plastic made adhesive, 5. The method according to any one of claims 2 to 4-, characterized characterized in that the suction effect is achieved by at least one suction nozzle moved through the supply of seeds or seedlings is exercised. 6. Device for performing the method according to one of the preceding claims, characterized in that it one moistening device (27) which makes at least the longitudinal edges of the plastic tape (10) adhesive and at least a forming device (35) for longitudinally folding the adhesive made tape (10) and furthermore a feeding device (40) for each individual insertion of the seeds (46) into the longitudinally folded band and then a pressing device (12, 13) for the mutual gluing of the adhesive parts of the tape and for closing one of the seeds in Closed envelope containing longitudinal distances from one another 1098U / 0024 (H) which forms the planting strip ". 7. Device according to claim 6, characterized in that it is provided with a drive for the longitudinal movement of the plastic strip (10) is provided and the feeding device (40) has several suction members (52), preferably formed by suction nozzles for picking up the seeds individually (46), whose suction effect for dispensing and placing the seeds in the Longitudinally folded plastic tape can be lifted at regular intervals is. 8. Device according to claim 7, characterized in that the drive for the longitudinal movement of the plastic belt (10) is formed by two tension rollers (12, 13) engaging it on both sides of the belt. 9. Device according to claim 8, characterized in that dasB the tension rollers (12, 13) are arranged in the direction of movement of the plastic belt (10) behind the feeding device (40) are and at the same time the pressing device for closing the seeds at regular intervals from one another containing tape (10) form by gluing. 10. Device according to claim 8 or 9, characterized in that the plastic band (10) for passing through the Device by means of the pulling rollers (12, 13) from a supply roll (11) is removable. 1098U / 0024 .11. Device according to one of Claims 6 to 10, characterized characterized in that it is followed by a winding roller (47, 48) for untwisting the finished planting strip (14). 12. Device according to one of claims 6 "to 11, characterized characterized in that the feeding device (40) has a disk (50) rotatable by means of a drive with several on its Support arms (51) attached to the circumference in the radial direction, each for a suction nozzle (52) for picking up a single seed (46) from a storage container (53) surrounding the rotatable disk on part of its circumference, as well as a switching device (65), via which the suction nozzles on their path of movement in the area of the VorratsbeläLters (53) and then up to a Abgabeäelle (40a) for the seeds on the longitudinally folded band (10) with a suction device, im However, the area of the delivery point is separated from the suction air device and connected to the outside air. 13. Device according to claim 12, characterized in that the individual support arms (51) for the respective suction nozzle (52) as a tube for connecting the suction nozzles to air ducts (77) arranged in the rotatable disk (50) and via these are formed with the switching device (65) 14 · Device according to claim 13 »characterized in that the reversing device is provided by a stationary, the rotatable sole plate (50) at least in the area of the axial 109844/0024 Direction of air channels opening into the upper surface of the disc (77) is formed with airtight termination covering flat connecting member (65), which on its underside (70) with one in its length the length of the part-circular (movement path of the individual suction nozzles (52) from the beginning of the pick-up of a seed (46) in the form of a groove (71) corresponding to the longitudinally folded plastic band until it is released a pitch circle for connecting the air ducts (77) of the rotatable disk with a device leading to a suction air device Suction line (66) and with a shorter groove (72) for connecting the air ducts (77) at the delivery point (40a) with a ventilation line (68) open to the outside air is provided. 15. Device according to claim 14, characterized in that that the grooves (71 and 72) lie on the same arc. 16. Device according to claim 14 or 15, characterized in that that in the connecting member (65) between the grooves (71 and 72) an opening (73) and one connected to it Pressure medium supply line (69) is arranged, which when rotating the disc (50) in each case via one of the air ducts (77) of the same is temporarily connected to the corresponding suction nozzle (52) in order to give it a pressure medium to blow out the nozzle to feed. 17. Device according to one of claims 12 to 16, characterized characterized in that the support arms (51) for the suction members 109844/0024 (52) pivotable up and down on the rotatable disc (50) are articulated and slidably rest on a stationary cam track (61) surrounding the rotatable disc (50), which in the Area of the Vorratsbeläters (53) compared to the other circumferential area is deepened in order to immerse the suction nozzles (52) in the bulk of seeds located in the storage container bring about. 18. Device according to one of claims 6 to 17 »characterized in that on the storage container (55) a ! Vibrating device (62) is arranged. 19. Device according to one of claims 14 to 18, characterized in that the connection of the air ducts (77) of the rotatable disc (50) with the suction air device serving groove (71) of the connecting member (65) has a length, which corresponds to a pitch circle of 270 °. 20. Device according to one of claims 6 to 19 »characterized in that the moistening device (27) is a U-shaped moistening member (29) made of felt or has another absorbent material which rests with its web (32) on the plastic band (10). The / patent attorney 109844/0024 Le rs e ite