SELECTION MACHINE FOR SEPARATING FRUITS FROM FOREIGN BODIES ATTACHED TO THE FRUITS

Abstract

A selection machine for separating fruits from foreign bodies has a rigid support frame, a mobile frame connected to the fixed frame and having a longitudinal axis (A-A), a connection between the fixed frame and the mobile frame, actuation means of the mobile frame; the mobile frame has a rectangular section and upper wall and a lower wall with a plurality of holes; the mobile frame oscillating around a horizontal rotation axis (X-X) disposed transversally to the longitudinal axis (A-A); the connection being a horizontal connecting pivoting pin having a longitudinal axis that coincides with the horizontal rotation axis (X-X) of the mobile frame.

Claims

1. Selection machine for separating fruits from foreign bodies, comprising: a rigid support frame; a mobile frame connected to said fixed frame and comprising an inlet mouth an outlet mouth and a longitudinal axis; connection means between the fixed frame and the mobile frame; actuation means of said mobile frame; wherein said mobile frame has a rectangular section and comprises an upper wall, a lower wall and a pair of sides that connect said upper wall to said lower wall; said mobile frame defining a space in which fruits and relevant foreign bodies are inserted through said inlet mouth; said upper wall and said lower wall comprising a plurality of holes with dimensions suitable for allowing the passage of said fruit; said mobile frame oscillating around a horizontal rotation axis disposed transversally to the longitudinal axis, and said connection means comprise a horizontal connecting pivoting pin disposed in the inlet mouth of the mobile frame, said pivoting pin connecting said oscillating mobile frame to the fixed support frame, said pivoting pin having a longitudinal axis that coincides with the horizontal rotation axis of the mobile frame.

2. The selection machine of claim 1, comprising an external frame suitable for covering the mobile frame in such manner to stop the fruits and the foreign bodies coming out of the holes of the upper wall and of the lower wall of the mobile frame, said external frame comprising two lateral walls, an upper wall and a lower wall; the upper wall of the external frame, the upper wall of the mobile frame and the lateral walls of the external frame defining an upper space suitable for receiving the fruits and the foreign bodies coming out from the top of the space of the mobile frame; the lower wall of the external frame, the lower wall of the mobile frame and the lateral walls of the external frame defining a lower space suitable for receiving the fruits and the foreign bodies coming out from the bottom of the space of the mobile frame.

3. The selection machine of claim 1, wherein the fixed support frame comprises back legs and front legs; the upper wall of the external frame and the lower wall of the external frame having longitudinal axes that form acute angles with a longitudinal axis of each back and/or front leg of the fixed support frame.

4. The selection machine of claim 2, wherein the external frame is joined to the fixed support frame.

5. The selection machine of claim 1, wherein the upper wall and the lower wall of the mobile frame are parallel.

6. The selection machine of claim 1, wherein the actuation means comprise: a motor provided with a shaft; motion transmission and conversion means connected to the shaft of the motor, and a rod connected to the motion transmission and conversion means and to the mobile frame in the outlet mouth of the mobile frame.

7. The selection machine of claim 1, wherein the actuation means are configured in such manner that the mobile frame oscillates at a frequency comprised between 90 and 500 oscillations per minute.

8. The selection machine of claim 1, wherein the fixed support frame comprises a hopper upstream the inlet mouth of the mobile frame for introducing the fruits and the relevant foreign bodies inside the mobile frame.

9. Stalk-removing machine comprising a selection machine of claim 1, and a selection table for separating fruits from foreign bodies.

10. The stalk-removing machine of claim 9, wherein the outlet mouth of the mobile frame of the selection machine is positioned above the selection table.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0028] For the sake of clarity, the description of the selection machine of the invention continues with reference to the attached drawings, which have a merely illustrative, not limiting value, wherein:

[0029] FIG. 1 is an axonometric view of the selection machine according to the present invention;

[0030] FIG. 2 is an axonometric view of the selection machine of FIG. 1 without an external frame;

[0031] FIG. 3 is an axonometric view of a mobile frame of the selection machine according to the present invention;

[0032] FIG. 4 is an axonometric view of a stalk-removing machine comprising the selection machine according to the invention and a selection table.

DETAILED DESCRIPTION OF THE INVENTION

[0033] With reference to FIGS. 1 and 2, a selection machine according to the invention is disclosed, which is generally indicated with reference numeral (100).

[0034] With reference to FIG. 1, the selection machine (100) is intended to separate fruits from foreign bodies and comprises a fixed support frame (1) and a mobile frame (2) connected to said fixed support frame (1).

[0035] With reference to FIGS. 2 and 3, the mobile frame (2) has a rectangular section and a longitudinal axis (A-A).

[0036] The mobile frame (2) comprises: [0037] an upper wall (21); [0038] a lower wall (22) parallel to the upper wall (21), and [0039] a pair of sides (20) that connect the upper wall (21) to the lower wall (22).

[0040] The mobile frame (2) also comprises an inlet mouth (24) and an outlet mouth (25) disposed transversally with respect to the longitudinal axis (A-A).

[0041] The mobile frame (2) defines a space (23) in which the fruits and the relevant foreign bodies are intended to be inserted through the inlet mouth (24).

[0042] The upper wall (21) and the lower wall (22) comprise a plurality of holes (F) with dimensions suitable for allowing the passage of said fruits.

[0043] The mobile frame (2) oscillates around a horizontal axis of rotation (XX) disposed transversally with respect to the longitudinal axis (A-A).

[0044] The fixed support frame (1) comprises a hopper (13) immediately upstream the inlet mouth (24) of the mobile frame for introducing the fruits and the relevant foreign bodies inside the mobile frame (2).

[0045] The fixed support frame (1) comprises: [0046] two back legs (11) with a height (H1) disposed in correspondence of and under the inlet mouth (24) of the mobile frame, and [0047] two front legs (12) disposed in correspondence of and under the outlet mouth (25) of the mobile frame and having a height (H2) that is lower than the height (H1) of the back legs (11).

[0048] The mobile frame (2) is revolvingly connected to the fixed support frame (1) onto the back legs (11), substantially in correspondence of the inlet mouth (24) of the mobile frame (2). The selection machine (100) comprises connection means (5) between the fixed support frame (1) and the mobile frame (2). The connection means (5) comprise a horizontal connecting pivoting pin (P) to connect the oscillating mobile frame (2) to the fixed support frame (1). The mobile frame (2) comprises two lateral openings (26) in correspondence of the inlet mouth (24) of the mobile frame (2). The pin (P) is inserted in the lateral openings (26) of the mobile frame (2) and has a longitudinal axis that coincides with the horizontal axis of rotation (X-X) around which the mobile frame (2) rotates.

[0049] The selection machine (100) comprises actuation means (3) to actuate the mobile frame (2). The fixed support frame (1) comprises a support bracket (not shown in the attached figures) to house and support said actuation means (3).

[0050] Said actuation means (3) comprise: [0051] a motor (30) comprising a shaft (31); [0052] motion transmission and conversion means (32) connected to the shaft (31) of the motor, and [0053] a rod (33) comprising a first end connected to the motion transmission and conversion means (32) and a second end connected to the mobile frame (2), in correspondence of the outlet mouth (25) of the mobile frame (2).

[0054] The actuation means (3) are configured in such manner that the mobile frame (2) oscillates at a frequency comprised between 90 and 500 oscillations per minute, in such a way to generate a force able to detach the fruit from the relevant foreign body.

[0055] The mobile frame (2) can be also actuated by a linear actuator. The linear actuator may comprise a cylinder-piston system of hydraulic, pneumatic or electrical type, or a screw-female screw system actuated by means of an electrical motor.

[0056] The selection machine (100) comprises an external frame (4) suitable for covering the mobile frame (2) in such manner to stop the fruits coming out from the holes (F) of the upper wall (21) and of the lower wall (22) of the mobile frame (2). The external frame (4) comprises: [0057] an upper wall (41) disposed above the upper wall(21) of the mobile frame, [0058] a lower wall (42) disposed under the lower wall (22) of the mobile frame, and [0059] two lateral walls (40) engaged against the sides (20) of the mobile frame.

[0060] The upper wall (41) of the external frame, the upper wall (21) of the mobile frame and the lateral walls (40) of the external frame define an upper space (43) suitable for receiving the fruits and the foreign bodies coming out from the top of the space (23) of the mobile frame.

[0061] The lower wall (42) of the external frame, the lower wall (22) of the mobile frame and the lateral walls (40) of the external frame define a lower space (44) suitable for receiving the fruits and the foreign bodies coming out from the bottom of the space (23) of the mobile frame.

[0062] The upper space (43) and the lower space (44) comprise an outlet mouth (45) respectively disposed above and under the outlet mouth (25) of the mobile frame (2).

[0063] The upper wall (41) of the external frame (4) and the lower wall (42) of the external frame (4) have longitudinal axes (C-C, D-D) that form acute angles with a longitudinal axis (B-B) of each back and/or front leg of the fixed support frame, in such manner to allow the fruit to travel down towards the outlet mouths (45) of the upper space (43) and/or of the lower space (44).

[0064] The external frame (4) is joined to the fixed support frame (1), and consequently it is not actuated by the actuation means (3).

[0065] Because of the provision of the external frame (4), the fruits that come out from the mobile frame (2) are conveyed into the outlet mouth (25) of the mobile frame and in the outlet mouths (45) of the external frame, whereas the foreign bodies remain inside the space (23) of the mobile frame and come out from the outlet mouth (25) of the mobile frame.

[0066] Advantageously, as shown in FIG. 4, the selection machine (100) is part of a stalk-removing machine (300) for separating and selecting the fruits with respect to the relevant foreign bodies. The stalk-removing machine (300) also comprises a selection table (200) for separating the fruits from the foreign bodies. The selection table (200) comprises a frame(201) having a longitudinal axis (M-M) and at least one set of rollers (202) revolvingly mounted in the frame (201). Each roller (202) comprises a shaft with an axis of rotation (Z-Z) orthogonal with respect to the longitudinal axis (M-M) of the frame (201).

[0067] The selection table (200) comprises adjusting means intended to adjust the distance between the axes of rotation (Z-Z) of the rollers (202) according to the dimensions of the fruits to be cleaned.

[0068] The selection machine (100) is positioned on the selection table (200), in particular the outlet mouth (25) of the mobile frame (2) of the selection machine (100) is positioned on the selection table (200).

[0069] The selection machine (100) comprises a barrier (6) disposed in correspondence of the outlet mouth (25) of the mobile frame and of the outlet mouths (45) of the external frame to convey on the selection table (200) the fruits and the foreign bodies falling from the outlet mouth (25) of the mobile frame and from the outlet mouths (45) of the external frame.

[0070] The fruits and the relevant foreign bodies are introduced in the hopper (13) and fall in the inlet mouth (24) of the mobile frame. Because of gravity, the fruits and the relevant foreign bodies are moved towards the outlet mouth (25) of the mobile frame (2).

[0071] Meanwhile, the motor (30) of the actuation means (3) is in operation, therefore the shaft (31) of the motor (30) transmits the motion to the motion transmission and conversion means (32) to convert the rotatory motion into rectilinear motion and transmit the motion to the rod (33). The rod (33) moves the mobile frame (2) allowing the mobile frame (2) to rotate around the pin (P).

[0072] Consequently, the inlet mouth (24) of the mobile frame (2) is always hinged to the back legs (11) of the fixed support frame, whereas the outlet mouth (25) is cyclically raised and lowered with respect to the front legs (12) of the fixed support frame (1).

[0073] While passing from the inlet mouth (24) to the outlet mouth (25) of the mobile frame, the fruits and the relevant foreign bodies hit against the upper wall (21) and against the lower wall (22) of the mobile frame (2), being trapped into the holes (F) of the upper wall (21) and of the lower wall (22) of the mobile frame (2) and causing the separation of the fruits from the relevant foreign bodies.

[0074] It is possible that some of the fruits having a lower diameter than the holes (F) of the upper wall (21) and of the lower wall (22) come out from the holes (F) and hit against the upper wall (41) or the lower wall (42) of the external frame.

[0075] The fruits come out from the outlet mouth (25) of the mobile frame and from the outlet mouths (45) of the external frame, whereas the foreign bodies mainly come out from the outlet mouth (25) of the mobile frame. The fruits and the foreign bodies fall onto the selection table (200). Having lower dimensions than the foreign bodies, the fruits are inserted in the space between two consecutive rollers (202) and fall from the selection table (200), whereas the foreign bodies remain on the selection table (200) and are conveyed towards a slide (S) used to discharge waste.