FIELD
The present disclosure generally relates to an automated electro-mechanical system
and method for efficiently grading and ejecting objects.
BACKGROUND
Existing ejecting and/or grading machines primarily function to grade objects using scanning system based on external parameters and/or internal parameters, but there are certain objects which are sticky in nature which are very difficult to grade in existing grading machine due to lack of efficient ejecting mechanism in them. Typically, sticky objects require efficient ejecting mechanism to eject sticky object in particular grade containers after their scanning.
Due to the specialized feature of sticky character of the sticky objects, they are difficult to be scanned, conveyed, ejected and graded. The existing ejecting and/or grading machines lack any such effective mechanism for efficient grading of sticky objects. Though, few existing ejecting and/or grading machines perform scanning of sticky objects, but efficient conveying, ejecting and/or grading of each such sticky objects is still inefficient with existing conveying, ejecting and/or grading mechanisms which lead into poor conveying, ejecting and/or grading operation. Moreover, the existing grading systems are complex in structure and operation. There are some references referring to grading/ejecting of sticky objects.
Reference No. 1, Korean Pat. App. No. KR20120083786A titled “Garlic screening device” discloses a garlic assorting apparatus and a method for washing, drying garlic while assorting the garlic by size, but being sticky the garlic may get stick in the assorted holes and later forming cluster and blockage in the path as the invention does not explicitly discloses any mechanism for efficient ejecting ad sorting of such sticky garlic to avoid blockage due to stickiness of the garlic.
Reference No. 2, Japanese Pat. App. No. JP2012239464A titled “Air-blowing processing device, air-blowing processing structure and air-blowing processing system” discloses a brush system for removing/ejection of the garlic seed and the seeds fall into a roller; but the ejection mechanism may not be effective as the

brushes system get intact with the garlic due to stickiness and may also form cluster of seeds by sticking to each other.
Therefore, there is a strong need for a system and method for grading and ejecting such certain objects that alleviate aforementioned drawbacks.
SUMMARY
The present disclosure discloses a system for grading and ejecting objects. The system includes: at least one fixed main frame, at least one controller, at least one feeding and singulating unit, at least one conveying unit, at least one scanning unit, a plurality of receiving surface, at least one extending and retracting mechanism, a plurality of grade containers, and at least one actuator.
The present disclosure also discloses a method for grading and ejecting objects by the system. The disclosed system and the method grades multiple objects efficiently in a single pass with effective scanning and effective ejection of objects.
OBJECTS
• Objects of the present disclosure are listed below:
• The main object of the present disclosure is to provide a system for grading and ejecting objects that includes a simplified extending and retracting mechanism and an actuator which enables effective ejection of each object due to inertial force of the graded object and due to sliding of the receiving surface, wherein few objects have the tendency to stick to the transparent element and need effective force to push/eject object easily and efficiently.
• It is another object of the present disclosure to provide a system for grading and ejecting objects that consumes minimal energy for grading and ejecting objects considering different external parameters and/or internal parameters of each object.

• It is still another object of the present disclosure to provide an automated system for grading and ejecting objects that enables rapid efficient grading and ejection of each object which increases the throughput of the system.
• It is yet another object of the present disclosure to provide a system for grading and ejecting objects is reasonable in design, simple in structure, easy to handle, and extremely precise in grading quality grading and efficient handling of objects by separating, singulating each object by efficient scanning of individual object.
• It is another object of the present disclosure to provide a method for grading and ejecting multiple objects in a single pass in an effective manner by accurate scanning of different external and/or parameters/ properties of each object.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other objects, features, and advantages of the disclosure will best be
understood from the following description of various embodiments thereof, selected
for the purposes of illustration, and shown in the accompanying drawings.
FIG. 1 is a schematic perspective view of a system for grading and ejecting objects
according to one embodiment of the present disclosure;
FIG. 2 is a schematic perspective view arrangement of the transparent element,
receiving surface, an extending and retracting mechanism and an actuator, such that
the transparent element and the receiving surface are not positioned one over another
in a partial/complete overlapping manner;
FIG. 3 is a schematic perspective view arrangement of the transparent element, receiving surface, an extending and retracting mechanism and an actuator, such that the transparent element and the receiving surface are positioned one over another in a complete overlapping manner; and
FIG. 4 is a flowchart depicting a method for grading and ejecting objects by the system of FIG. 1.

DETAILED DESCRIPTION
The present disclosure will now be described in detail with reference to the accompanying drawings. Now, refer in more detail to the exemplary drawings for the purposes of illustrating non-limiting embodiments of the present disclosure. FIG. 1 illustrates a system (100) for grading and ejecting objects which efficiently grades and ejects objects, in accordance with one embodiment of the present disclosure.
The main non-limiting components of the system (100) for grading and ejecting objects (O) are: at least one fixed main frame (05), at least one controller (07), at least one feeding and singulating unit, at least one conveying unit (30), at least one scanning unit (40), a plurality of receiving surface, at least one extending and retracting mechanism, a plurality of grade containers (60), and at least one actuator (50). In one embodiment, an object (O) is any regular, irregular, even, uneven, objects (O), typically sticky objects (O) particular external and/or internal parameters including but not limited to garlic, raisin, dates, figs, fruits and vegetables, diced fruits and vegetables and any other agricultural products, shrimps, prawns or any other aquatic animals. ‘Object’ shall also refer to synthetically manufactured sticky objects (O).
In one exemplary embodiment, the sticky object (O) is garlic having different external and/or internal parameters. As the sticky objects (O) of such external and/or internal parameters which cannot be ejected by free-fall gravity based grading machine due to their stickiness, and require inertial force of the object (O)while conveying to push the conveying object (O)using effective ejection mechanism.
The main frame (05) supports the main non-limiting components of the system (100). In accordance with one embodiment of the present disclosure, the feeding and singulating unit includes a feeder (10) and a singulator (20). Typically, the feeder (10) is a hopper which enables in-feed of multiple objects (O) in cluster. The singulator (20) receives objects (O) from the feeder (10). The singulator (20) singulates each object (O) from other objects (O). The singulator (20) can be at least one of multiple reverse roller pairs, tapered shafted helical screws, rotating drums

with holes, vacuum drum or any other effective system that can enables singulating one object (O) from other objects (O). The feeding and singulating unit can additionally include at least one feed sensor (not illustrated in Figures) and a feed controller (12). The feed sensors sense the flow-rate of objects (O) moving from the feeder (10) and provide the sensed flow-rate data to the feed controller (12). The feed controller (12) communicates the flow-rate data to the controller (07). The controller (07) determines whether the flow-rate is required to be increased, decreased or maintained and accordingly signals the feed-controller (12). Upon receipt of signal from the controller (07), the feed-controller (12) signal increase, decrease or maintain flow-rate from the feeder (10) to the singulator (20). Alternatively, the feed sensors can directly be connected to the controller (07) which receives the sensed feed-rate. The controller (07) directly signals to increase, decrease or maintain feed-rate.
The conveying unit (30) is conveying on the fixed frame (05). The conveying unit (30) is configured with one or more channels (32a to 32d). Each channel of conveying unit (30) includes a plurality of transparent element (34a to 34n) spaced apart at a pre-determined distances. Each transparent element (34i) receives and conveys a singulated object (O) to the scanning unit (40). Each transparent element (34i) is movable in respective channel (32a to 32d).
Referring to FIGS. 2 to FIG. 3, each transparent element (34i) is movable and is one examination bed. Each examination bed is fitted and detachable to form the conveying unit (30). Typically, each transparent element (34i) is a single unit. The system (100) includes a plurality of receiving surface which are fixedly connected to the fixed frame (05). The receiving surfaces (34iv) are spaced apart at a predetermined distances from each other and are continuously movable on the fixed frame (05). Each receiving surface (34iv) is located adjacent to and co-operating with corresponding transparent element (34i) of the conveying unit (30). Each transparent element (34i) and each receiving surfaces (34iv) are transparent so as to enable accurate examination of each singulated object (O) by the scanning unit (40) after receiving singulated object (O). The system (100) includes the extending and

retracting mechanism for each transparent element (34i) and each receiving surface (34iv). The extending and retracting mechanism includes at least one fixed rod (34iii) and at least one flexible element (34iia and 34iib). The fixed rod (34iii) is provided underneath of the transparent element (34i) at one edge close to the grade container.
In one embodiment, the fixed rod (34iii) is connected to the transparent element (34i). One or more flexible elements (34iia and 34iib) are positioned below the transparent element (34i). Typically, the flexible elements (34iia and 34iib) are springs. Each flexible element (34iia and 34iib) has a first portion and a second portion. The first portion of the flexible element (34iia and 34iib) is connected underneath to a portion of the receiving surface (34iv) and the second portion of the flexible element (34iia and 34iib) is connected underneath to a portion of the transparent element (34i).
The portion of the receiving surface (34iv) can be an edge portion, a middle portion or any other portion in between first and second end of the receiving surface (34iv). The portion of the transparent element (34i) can be a portion an edge portion, a middle portion or any other portion in between first and second end of the transparent element (34i).
In one embodiment, as illustrated in FIG. 2, the first portion of the flexible element (34iia and 34iib) is connected underneath to edge portion of the receiving surface (34iv) and the second portion of the flexible element (34iia and 34iib) is connected underneath to an edge portion of the transparent element (34i). FIG. 2 is a schematic perspective view arrangement of the transparent element, receiving surface (34iv), an extending and retracting mechanism and an actuator (50), such that the transparent element and the receiving surface (34iv) are not positioned one over another in a complete overlapping manner.
In another embodiment, the first portion of the flexible element (34iia and 34iib) is connected underneath to the edge portion of the receiving surface (34iv) and the second portion of the flexible elements (34iia and 34iib) is connected underneath to one of the fixed rod (34iii).

Singulated objects (O) from the feeding and singulating unit are received on the transparent element (34i) and the transparent element (34i) conveys the objects (O) towards the actuator (50) through the scanning unit (40a and 40b). Singulated objects (O) can be placed simultaneously on two or more transparent element (34i) of same or different channels (32a to 32d) or positioned separately on two or more transparent element (34i) of same or different channels (32a to 32d).
In one embodiment, the receiving surface (34iv) and the transparent element (34i) are of same size or are of different sizes. The receiving surface (34iv) is either opaque or transparent. However, the transparent element (34i) is always transparent. The receiving surface (34iv) is fixed/connected to the frame (05) and moving continuously. The receiving surface (34iv) slides on the transparent element (34i).
When objects (O) on the transparent element (34i) are conveyed towards the scanning unit (40) for scanning each object (O). The system (100) includes at least one scanning unit positioned in the vicinity of the feeding and singulating unit. The scanning unit (40) scans each object (O) positioned and conveyed by each transparent element (34i) and provides at least one of an external parameter and/or an internal parameter of each object (O) to the controller (07). The controller (07) determines grade of each object (O) accurately.
The scanning unit (40) includes one or more scanning device(s). In one embodiment, the scanning unit (40) includes a first scanner (40a) and a second scanner (40b). The first scanner (40a) is positioned at a first position at a distance from the frame (05). The second scanner (40b) is positioned at a second position at a distance from the frame (05). The first position and the second position are positioned at an angular distance from each other which can be substantially opposite to each other so that the object (O) can be completely scanned from different angles. Referring to the exemplary FIG. 1, the first scanner (40a) is positioned above the frame (05) and the second scanner (40b) is positioned below the frame (05) such that the object (O) can be completely scanned from above and below. In one embodiment, the first scanner (40a) and the second scanner (40b) are cameras. The cameras are configured to capture real-time images of each object (O) in three dimensional (3D) space from

multiple angles that determine at least one external and/or internal parameters of each object (O) under examination and also determine the position of the object. The first scanner (40a) and the second scanner (40b) are connected to the controller (07). The camera can be the programmable cameras which are programmed as per the need of the system and the system includes plurality of cameras. The cameras can be ‘regular color cameras’ and/or ‘multi-spectral cameras’. The ‘multi-spectral cameras’ work at different frequencies of electromagnetic spectrum (multi-spectrum) like visible, ultra-violet, infra-red, x-ray etc. for enhanced analysis of objects (O) of interest based on external and/or internal parameters of each object (O) of interest. The disclosure also covers the scanning of each object (O) using any ‘regular color cameras’ and/or ‘multi-spectral cameras’ and/or different light sources of different frequencies and at least one image processing unit to process the image of each object. The external parameter may include but not limited to size, shape, color, texture/surface properties, defects, mechanical, physical injuries, etc. The objects (O) are also graded based on internal parameters including, but not limited to moisture content inside object, seeded or seedless vegetables or fruits, depth/thickness of object, internal defects, and microbial infections/biochemical activities inside object.
In another embodiment, the first scanner (40a) and the second scanner (40b) is any other equipment that enables scanning of the objects (O). The first scanner (40a) and the second scanner (40b) can either be same element or can be different element. In an alternative embodiment, the number of scanners used can be varied as per the need of the system and scanning requirements. The first scanner (40a) and the second scanner (40b) are connected to the controller (07).
The system is provided with the actuator (50) provided for each grade container (60) the actuator (50) is selectively connected to the extending and retracting mechanism. In one embodiment, the actuator (50) is a movable rod that is selectively connected and disconnected to the fixed rod (34iii) upon direction of said controller (07).

In another embodiment, as illustrated in FIG. 1 to FIG. 3, the actuator (50) is a pair of movable rods (50) positioned for each grade container in vicinity of the grade container.
In one embodiment, the actuator (50) is a plurality of movable rods (50). The movable rod (50) is configured to be engaged and disengaged with the fixed rod (34iii) upon direction received from the controller (07). The structure of the movable rods (50) can be determined as per the need of the system (100). For example, each movable rod (50) is a vertical uplifting rod which enables ejection.
In one embodiment, each the movable rod (50) of respective ejection unit is vertically uplifted upon getting signals from the controller (07) at the time of ejection of object (O). In one embodiment, each pair of movable rod (50) is a pair of plunger.
In one embodiment, the transparent element (34i) is triangular shaped which has three edges/sides to make its boundaries by keeping one side without boundaries from where object (O) falls/drops in the grade container (60).
The actuator (50) is positioned substantially above the grade containers (60). Each grade container (60) is configured to receive objects (O) of a particular grade. In one embodiment, the movable rod (50) is fixed on the main frame (05). In another embodiment, the movable rod (50) is fitted on a supporting frame (not illustrated in Figures) positioned proximal to the main frame (05) of the system (100).
As illustrated in FIG. 2, which is a schematic perspective view arrangement of the transparent element (34i), receiving surface (34iv), an extending and retracting mechanism and an actuator (50), such that the transparent element (34i) and the receiving surface (34iv) are not positioned one over another in a complete overlapping manner. The extending and retracting mechanism is in extended mode.
In an operative configuration, the controller (07) determine grade of each object (O) and direct object (O) to move towards respective grade container. When object (O) is received in vicinity of desired grade container, the controller (07) signals

actuation of the actuator (50), the fixed rod (34iii) is selectively connected with the actuator (50) to restrict movement of the transparent element (34i) causing retraction of the extending and retracting mechanism from an extended position.
The extending and retracting mechanism retracts adjacently disposed the transparent element (34i) and the receiving surface (34iv) such that the transparent element (34i) and the receiving surface (34iv) are positioned one over another in a complete or partial an overlapping manner. During retraction as illustrated in FIG. 3, a cavity is created through which due to inertial movement of graded object (O) and due to sliding of the receiving surface (34iv) , the object (O)falls through the cavity in respective grade container (60) from the transparent element (34i). As illustrated in FIG. 3 which is a schematic perspective view arrangement of the transparent element (34i), receiving surface (34iv) , an extending and retracting mechanism and an actuator (50), such that the transparent element (34i) and the receiving surface (34iv) are positioned one over another in a complete overlapping manner. The extending and retracting mechanism is in retracted mode.
After dropping of the object (O) in respective grade container (60), the controller (07) signals the controller (07) signals the de-actuation of the actuator (50), and the fixed rod is selectively dis-connected with the actuator (50) causing expansion of the transparent element (34i) and the receiving surface (34iv) from the retracted position. The extending and retracting mechanism is extended again and thereby allows continuous movement of empty transparent elements (34i). The extending and retracting mechanism extends so that the adjacently disposed transparent element (34i) and the receiving surface (34iv) are positioned in-line. The objects (O) are ejected effectively due to inertial force of the graded object (O) and due to sliding of the receiving surface (34iv) which enable effective ejection of sticky objects (O) which have the tendency to stick to the transparent element (34i) by disturbing effective ejection.
Objects (O) are graded and dropped in the plurality of grade container (60) provided after scanning unit and underneath of the transparent element (34i) and the receiving surface (34iv), thereby grading of plurality of objects (O) in a single pass.

In one embodiment, the system (100), further includes a cleaning unit (not illustrated in any Figures) positioned in vicinity of each grade container (60) for cleaning the empty transparent elements (34i). The cleaning unit includes a washing unit and/or a drying unit. The transparent elements (34i) which may become greased due to conveying of sticky objects (O), can be washed by the washing unit and later washed transparent element (34i) is dried by the drying unit before conveying new object (O) for grading.
The present disclosure also discloses a method for grading and ejecting objects (O) by the system (100). In one embodiment as per the flowchart of FIG. 3, the method includes feeding multiple objects (O) in cluster through the feeding and singulating unit. Further the singulating each object (O) from other objects (O) in the feeding and singulating unit. Objects (O) moving in and from the feeding and singulating unit are controlled by the controller (07) upon inputs received from the feed sensor(s) which is/are provided in the feeding and singulating unit, thereby enabling controlled feeding. Objects (O) are positioned such that each singulated object (O) is positioned on one transparent element (34i) from a plurality of transparent elements (34i) provided on the conveying unit. Each singulated objects (O) are conveyed by each transparent element (34i) and further scanning each object (O) is performed by the scanning unit provided in vicinity of the feeding and singulating unit. The scanning unit (40a and 40b) provides at least one of an external parameter and/or an internal parameter of each object (O) to the controller (07). The controller (07) determines the grade of each object. The plurality of grade container (60) are positionable after the scanning unit and underneath of the transparent element (34i) and corresponding receiving surface (34iv) and the controller (07) configured to directs object (O) to move towards respective grade container (60) after determining its grade. The plurality of receiving surface (34iv) are provided and fixedly connected to at least one fixed frame such that the plurality of receiving surfaces (34iv) is spaced apart at predetermined distances from each other and each receiving surface (34iv) being adjacent to and co-operating with corresponding transparent element (34i).

When object (O) is received in vicinity of desired grade container (60) the controller (07) actuates the actuator (50) provided for each grade container (60) for selectively connecting the actuator (50) with the extending and retracting mechanism for retracting adjacently disposed said transparent element (34i) and the receiving surface (34iv) such that the transparent element (34i) and the receiving surface (34iv) being laid one over another to create a cavity. Due to sudden stoppage of the transparent element (34i) from being conveyed and the sliding of the receiving surface (34iv), because of compression of the flexible elements (34iia and 34iib), the graded object (O) placed on the transparent element (34i) gets dropped due to inertial movement developed by graded object (O)and due to sliding of the receiving surface (34iv). Through the created cavity due to inertial movement of graded object (O) and due to sliding of the receiving surface (34iv), graded object (O) drop/fall in desired grade container (60), thus enabling efficient ejection of object (O). After dropping of graded object (O)in desired grade container (60) the controller (07) de-actuates the actuator (50) for selectively dis-connecting the actuator (50) with an extending and retracting mechanism for extending adjacently disposed the transparent element (34i) and the receiving surface (34iv) so that the transparent element (34i) and the receiving surface (34iv) being laid in-line with another by closing the created cavity, thereby allowing movement of empty transparent element (34i) for enabling conveying of the transparent element (34i) towards the feeding and singulating unit to receive next object (O) for conveying on empty transparent element (34i) .
In one embodiment, connection and disconnection of the actuator (50) is performed, wherein the actuator (50) is the movable rod (50) that is selectively connected and disconnected to the fixed rod (34iii) of the extending and retracting mechanism upon direction of the controller (07).
The method provides the extending and retracting mechanism provided for each transparent element (34i) and each receiving surface (34iv). Each extending and retracting mechanism includes the fixed rod (34iii) provided underneath of the transparent element (34i) and is selectively connected with the actuator (50) upon

actuation of the actuator (50) and disconnected with the actuator (50) upon de-actuation of the actuator (50) and the flexible element (34iia and 34iib) having a first portion and a second portion, where first portion is connected underneath to the portion of the receiving surface (34iv) and the second portion is connected underneath to one of the fixed rod (34iii) or the portion of the transparent element (34i) .
The method grades multiple objects (O) efficiently in the plurality of grade container (60) provided after efficient scanning of each object, thereby grading of plurality of objects (O) in a single pass.
In one embodiment, the method further includes cleaning of each empty transparent element (34i) by the cleaning unit positioned in vicinity of each grade container (60) after grading of objects (O). The cleaning includes washing and/or a drying of each empty transparent element (34i) to remove dirt/wax/stickiness of the sticky objects which are positioned on to transparent elements (34i) while conveying/grading. Each empty transparent element (34i) can be washed by the washing unit and later washed transparent element (34i) can be dried by the drying unit before conveying new object (O) for grading.
The method ejects sticky objects effectively due to inertial force of the graded object (O) and due to sliding of the receiving surface (34iv) , where such sticky objects (O) cannot stick to the transparent element (34i) and efficiently ejected in the respective grade container (60). The method is very much energy efficient due to effective ejection and can grade multiple objects (O) in a single pass efficiently.
As will be readily apparent to those skilled in the art, the present disclosure may easily be produced in other specific forms without departing from its essential characteristics. The present embodiments is, therefore, to be considered as merely illustrative and not restrictive, the scope of the disclosure being indicated by the claims rather than the foregoing description, and all changes which come within therefore intended to be embraced therein.

We Claim:
1) A system for grading and ejecting objects (O), said system comprising:
• at least one controller (07);
• at least one feeding and singulating unit configured to feed multiple objects (O) in cluster and singulate each object (O) from others, objects (O) moving in and from said feeding and singulating unit is controlled by said controller (07) upon inputs received from at least one feed sensor provided in said feeding and singulating unit;
• at least one conveying unit (30) conveying on a fixed frame and has a plurality of transparent element (34i) spaced apart at a pre-determined distances, each transparent element (34i) configured to receive and convey a singulated object;
• at least one scanning unit (40) provided in vicinity of said feeding and singulating unit and configured to scan each object (O) positioned and conveyed by each transparent element (34i) and provide at least one of an external parameter and/or an internal parameter of each object (O) to said controller (07), said controller (07) configured to determine grade of each object (O);
• a plurality of receiving surface (34iv) fixedly connected to said fixed frame such that said plurality of receiving surfaces (34iv) being spaced apart at a predetermined distances from each other and each receiving surface (34iv) being adjacent to and co-operating with corresponding transparent element (34i);
• an extending and retracting mechanism for:
extending adjacently disposed said transparent element (34i) and said receiving surface (34iv) such that said transparent element (34i) and said receiving surface (34iv) being laid in-line; and
retracting adjacently disposed said transparent element (34i) and said receiving surface (34iv) such that said transparent element (34i) and said receiving surface (34iv) being laid one over another;

• a plurality of grade containers (60) provided after scanning unit (40) and underneath of said transparent element (34i) and said receiving surface (34iv); and
• at least one actuator (50) provided for each grade container (60) and selectively connects to said extending and retracting mechanism;
wherein, in an operative configuration, said controller (07) configured to determine grade of each object (O) and direct object (O) to move towards respective grade container (60), when object (O) is received in vicinity of desired grade container (60), said controller (07) signals actuation of said actuator (50) to restrict movement of said transparent element (34i) causing retraction of said extending and retracting mechanism from an extended position for creating a cavity through which due to inertial movement of graded object (O) and due to sliding of said receiving surface (34iv), through the cavity, fall in respective grade container (60) from said transparent element (34i), said controller (07) signals expansion of said transparent element (34i) and said receiving surface (34iv) from the retracted position, thereby allow movement of empty transparent element (34i).
2) The system as claimed in claim 1, wherein said receiving surface (34iv) is transparent or opaque.
3) The system as claimed in claim 1, wherein said scanning unit (40) includes one or more scanning device(s).
4) The system as claimed in claim 1, wherein said receiving surface (34iv) and said transparent element (34i) is of same size or is of different size.
5) The system as claimed in claim 1, further comprises a cleaning unit for cleaning said empty transparent elements (34i).
6) The system as claimed in claim 1, wherein said extending and retracting mechanism provided for each transparent element (34i) and each receiving surface (34iv), said extending and retracting mechanism comprises:
• at least one fixed rod (34iii) provided underneath of said transparent
element (34i) and is selectively connected with said actuator (50)
upon actuation of said actuator (50) and disconnected with said
actuator (50) upon de-actuation of said actuator (50); and

• at least one flexible element (34iia and 34iib) having a first portion
and a second portion, said first portion connected underneath to a
portion of said receiving surface (34iv) and said second portion is
connected underneath to one of said fixed rod (34iii) or a portion of
said transparent element (34i).
7) The system as claimed in claim 1, wherein said actuator (50) is a movable rod (50) that is selectively connected and disconnected to said fixed rod (34iii) upon direction of said controller (07).
8) A method for grading and ejecting objects (O) by a system for grading and ejecting objects (O), said method comprising:

• providing at least one controller (07);
• feeding multiple objects (O) in cluster through at least one feeding and singulating unit;
• singulating each object (O) from others in said feeding and singulating unit,
wherein objects (O) moving in and from said feeding and singulating unit is controlled by said controller (07) upon inputs received from at least one feed sensor provided in said feeding and singulating unit;
• positioning each singulated object (O) on one transparent element (34i) from a plurality of transparent elements (34i) provided on a conveying unit (30), wherein said plurality of transparent elements (34i) spaced apart at a pre-determined distances;
• conveying singulated object (O);
• scanning each object (O) by at least one scanning unit (40) provided in vicinity of said feeding and singulating unit when object (O) being positioned and conveyed by each transparent element (34i) and provide at least one of an external parameter and/or an internal parameter of each object (O) to said controller (07), said controller (07) configured to determine grade of each object (O);
• providing a plurality of grade containers (60) positionable after said scanning unit (40) and underneath of said transparent element (34i)

and corresponding receiving surface (34iv), said controller (07) configured to direct object (O) to move towards respective grade container (60),
wherein, a plurality of receiving surface (34iv) are provided and fixedly connected to at least one fixed frame such that said plurality of receiving surfaces (34iv) being spaced apart at a predetermined distances from each other and each receiving surface (34iv) being adjacent to and co-operating with corresponding transparent element (34i);
• actuating an actuator (50) provided for each grade container (60) upon directions of said controller (07) when object (O) is received in vicinity of desired grade container (60) for selectively connecting said actuator (50) with at least one extending and retracting mechanism for retracting adjacently disposed said transparent element (34i) and said receiving surface (34iv) such that said transparent element (34i) and said receiving surface (34iv) being laid one over another such that creating a cavity through which due to inertial movement of graded object (O) and due to sliding of said receiving surface (34iv), graded object (O) fall in desired grade container (60); and
• de-actuating said actuator (50) for selectively dis-connecting said actuator (50) with an extending and retracting mechanism for extending adjacently disposed said transparent element (34i) and said receiving surface (34iv) such that said transparent element (34i) and said receiving surface (34iv) being laid in-line with another, thereby allow movement of empty transparent element (34i).

9) The method as claimed in claim 8, providing said receiving surface (34iv) as transparent or opaque.
10) The method as claimed in claim 8, providing said scanning unit (40) with one or more scanning device(s).

11) The method as claimed in claim 8, providing said receiving surface (34iv) and said transparent element (34i) of same size or is of different size.
12) The method as claimed in claim 8, providing a cleaning unit for cleaning said empty transparent elements (34i) by cleaning unit.
13) The method as claimed in claim 8, providing said extending and retracting mechanism provided for each transparent element (34i) and each receiving surface (34iv), wherein said extending and retracting mechanism comprises:

• at least one fixed rod (34iii) provided underneath of said transparent element (34i) and is selectively connected with said actuator (50) upon actuation of said actuator (50) and disconnected with said actuator (50) upon de-actuation of said actuator (50); and
• at least one flexible element (34iia and 34iib) having a first portion and a second portion, said first portion connected underneath to a portion of said receiving surface (34iv) and said second portion is connected underneath to one of said fixed rod (34iii) or a portion of said transparent element (34i).
14) The method as claimed in claim 8, providing said actuator (50) is a movable
rod (50) that is selectively connected and disconnected to said fixed rod
(34iii) upon direction of said controller (07).