Method of Planting a Tree in a Container, and an Apparatus for Potting a Tree

Abstract

A method of potting a tree, wherein the method includes the steps of inserting the root system of the tree into the lumen of the pot, and supplying a particulate substrate to the pot to cover the root system using an apparatus including a supply system. To pot trees quicker, the supply system includes i) a buffer, and ii) at least one chute, wherein the method includes providing the buffer with a predetermined amount of particulate substrate, and batch-wise release of the particulate material in the buffer to provide the pot with the particulate material from the buffer via the at least one chute by gravity.

Claims

1. A method of planting a tree in a container, wherein said tree comprising a root system and a stem, and a container for potting the plant is used, said container comprising a bottom wall, a sidewall extending from the bottom wall and an opening defined by the distal end of the sidewall, wherein the bottom wall and the sidewall define a lumen; wherein the method comprises the steps of: inserting the root system of the tree into the lumen of the container, and supplying a particulate substrate to the container via the opening to cover the root system, the particulate substrate being supplied using an apparatus comprising a supply system; characterized in that the supply system comprises i) a buffer, and ii) at least one chute, wherein the method comprises: providing the buffer with a predetermined amount of particulate substrate, and batch-wise release of the particulate material in the buffer to provide the container with the particulate material from the buffer via the at least one chute by gravity, the at least one chute having a distal end section comprising a distal chute opening and a lower edge, said lower edge being provided above the bottom of the container.

2. The method according to claim 1, wherein the apparatus comprises a valve between the buffer and the at least one chute, and the method comprises: in a state where the valve is closed, providing the buffer with a predetermined amount of particulate substrate, and for the step of batch-wise release of the particular material opening the valve.

3. The method according to claim 1, wherein at least the distal end section of the chute is inclined with respect to the bottom of the container.

4. The method according to claim 1, wherein the ratio of i) the smallest cross-sectional area of the buffer transverse to the centerline of the buffer, and ii) the sum of the smallest cross-sectional areas transverse to the centerline of the chutes is at most 2, preferably less than 1.4 and most preferably 1 or less.

5. The method according to claim 1, wherein the at least one chute is rotatably mounted with a proximal end section of the at least one chute being closer to the axis of rotation than the distal end section thereof.

6. The method according to claim 1, wherein the distal end section of the chute is provided with a stop for the container, and the container is moved to towards the stop and stopped by the stop.

7. The method according to claim 1, wherein the distal end section of the chute comprises a shell half comprising a concave side designed to center the container between distal openings of chutes.

8. The method according to claim 1, wherein the distal end section of a chute of the at least one chute comprises press plate and the particulate substrate is compressed by relatively moving the bottom of the container and the distal end section moved closer to each other.

9. The method according to claim 1, wherein the buffer is a slanted buffer, with in projection a top section of the buffer being relatively far from the bottom of the container and a bottom section of the buffer being relatively close to the bottom of the container.

10. The method according to claim 1, wherein while the buffer is provided with the particulate substrate, the height of the particulate substrate is monitored and the supply is stopped when a predetermined height is achieved.

11. An apparatus for potting a tree in a container, said apparatus comprising a supply system for supplying particulate material; characterized in that the supply system comprises i) a buffer, and ii) at least one chute, wherein the at least one chute: is a gravity-fed chute, and the at least one chute having a distal end section comprising a distal chute opening and a lower edge.

12. The apparatus according to claim 11, wherein the distal end section of the chute is provided with a stop for the container, and the container is moved to towards the stop and stopped by the stop.

13. The apparatus according to claim 11, wherein the distal end section of the chute of the at least one chute comprises a shell half comprising a concave side designed to center the container between distal openings of chutes.

14. The apparatus according to claim 11, wherein the distal end section of a chute of the at least one chute comprises a press plate configured to compress particulate material that has been supplied to the container.

15. The apparatus according to claim 14, wherein the press plate has a side having an arcuate form facing a stem of a tree when compressing particulate material that has been supplied to the container.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The present invention will now be illustrated with reference to the drawings where:

[0056] FIG. 1A to FIG. 1D illustrate a method for potting a tree;

[0057] FIG. 2 shows a distal end section of a chute of an apparatus comprising a supply system;

[0058] FIG. 3A to FIG. 3D show side views and front views in two height positions of chutes;

[0059] FIG. 4A and FIG. 4B show cutaway top views of the apparatus in two positions;

[0060] FIG. 5A and FIG. 5B show cutaway side and perspective views respectively of the apparatus for potting trees; and

[0061] FIG. 6A and FIG. 6B show side views corresponding to FIG. 1B and FIG. 1C.

DESCRIPTION OF EMBODIMENTS

[0062] FIG. 1A to FIG. 1D illustrate a method for potting a tree 190. A pot 191 is supplied using a conveyor belt 180 to an apparatus 100 for potting the tree 190. The conveyor belt 180 is stopped when the pot 191 arrives in front of the apparatus 100 (FIG. 1A). This may be automated using a sensor, for example, an optical sensor such as a photocell.

[0063] In the embodiment discussed here the apparatus 100 for potting a tree comprises a buffer 110 for particulate material and two chutes 120. The two chutes 120 are rotatably mounted along vertical axes 125 allowing them to be in a first open position (FIG. 1A and FIG. 1D) wherein distal end sections 121 of the chutes are adjacent to the conveyor belt, and in a second closed position (FIG. 1B and FIG. 1C) wherein lower edges 122 of the chutes 120 are above the pot 191.

[0064] The buffer 110 is filled while the pot 191 is being transported to the apparatus 100. This saves time. Once the buffer 110 is filled with a predetermined amount of particulate material (e.g. potting soil), this amount is released from the buffer in a batch-wise manner and slides via the chutes 120 (in the second position) through distal openings 123 in the distal end sections 121 over the lower edges 122 into the pot 191.

[0065] The chutes 120 are then rotated to the first position, allowing the conveyor belt 180 to remove the potted tree away and supply a new pot.

[0066] FIG. 2 shows a distal end section 121 of a chute 120 of the apparatus 100. Particulate material such as soil passes through the distal opening 123 over the lower edge 122 into the pot 191 (not shown).

[0067] In the embodiment discussed here, each distal end section 121 comprises a shell half 220. The shell half is arranged below the distal opening 123. Both shell halves 220 together are capable of surrounding the pot 191 to prevent it from falling over. In addition, when the two chutes 120 are moved from the first open position to the second closed position, the shell halves 220 come together and center the pot 191 between the distal openings 123 of two chutes 120. As a result, the soil is better distributed over the pot 191. Each shell halve 220 has a concave inner side facing the pot 191. When the chutes are in second position, the concave inner side of a shell halve 220 of one of the two chutes is facing in an upstream direction of conveyer belt 180 and the concave inner side of a shell halve of the other of the two chutes is facing in a downstream direction of the conveyer belt.

[0068] According to one embodiment, the distal end section 121 of a chute 120 comprises a press plate 221 and the particulate substrate is compressed by moving the distal end section 121 and hence the press plate 221 downward. Thus the root system becomes firmly embedded in the particulate material. The press plate has an arcuate form and has a concave side facing the stem of the plant to be potted. This allows for better compression of the particulate material in the pot and between roots of the root system of the plant, as a result of which the plant is more likely to remain its upright orientation in relation to the pot.

[0069] FIG. 3A to FIG. 3D show side views and front views in respectively a relatively high position of chutes 120 and a relatively low position, as used for compressing particulate material released in a pot.

[0070] The apparatus 100 comprises a base 320, a buffer section 310 comprising the buffer 110 and the chutes 120.

[0071] A pneumatic cylinder 330 is used to move the chutes 120 from a relatively high position (FIG. 3C; cylinder extended) to a relatively low position (FIG. 3D), and vice versa.

[0072] FIG. 4A and FIG. 4B show cutaway top views of the apparatus 100 in two positions of the chutes 120. The two chutes 120 are rotatably mounted along vertical axes 125 allowing them to be in a first open position (FIG. 4A) wherein distal end sections 121 of the chutes are adjacent to the conveyor belt 180, and in a second closed position (FIG. 4B) wherein lower edges 122 of the chutes 120 are above the pot.

[0073] The chutes 120 are rotatable about axes 125 and are connected via toothed wheels 424, one of which is driven off-center by a pneumatic piston 430.

[0074] The ingress openings 423 of the chutes 120 are visible as well.

[0075] FIG. 5A and FIG. 5B show cutaway side and perspective views respectively of the apparatus for potting trees. The buffer section 310 comprises a valve 530 actuated by a pneumatic cylinder 550 for batch-wise release of particulate material 599.

[0076] The apparatus 100 also comprises a level sensor 580 (e.g., a laser distance meter) for determining whether the buffer 110 has been supplied with a desired amount of particulate material 599 for the task at hand, which typically depends on the size of the pot. The buffer 110 can be fed using any method in the art known, such as a transport screw, which will be under control of a control unit (not shown) making use of the level sensor 580 for input.

[0077] The present method and apparatus lend themselves to further automation very well. FIG. 6A and FIG. 6B show side views corresponding to FIG. 1B and FIG. 1C, and show a robot 690 supplying a tree 190 to be potted (FIG. 6A) and holding it by its stem 691 during potting (FIG. 6B).