Fruit feeder for squeezer machines

Abstract: Fruit feeder for vending machines, including a container (2) for fruit storage, a fruit elevator (3) and a horizontal fruit conveyor. The elevator is composed of two vertical endless chains between which are mounted horizontal vanes (9) and (10) which elevate and eject the fruit. The horizontal transporter (4) is composed of two rollers turning in different directions and which have helical ribbings of opposite inclinations, receiving the fruit (5) from the elevator to transport them to a collecting trough (6) of the squeezer (1).

Description: The present invention refers to a fruit feeder for squeezer machines of the hind, already disclosed in WO 83/03953, built so that it ensures the feeding of the fruit to be squeezed from a fruit storage to the squeezing device. Fruit squeezing machines are generally conceived for manual control and include a small capacity fruit feeder, which may be limited to a feeding trough on which the fruit is manually placed as it is used. The object of the present invention is to have a large capacity and automatic fruit feeder, so that it allows designing of automatic squeezing machines which may be controlled by, for example, introducing coins. The feeder invented has a simple construction, thus ensuring correct operation and a reliable supply of fruit to the squeezing machine. According to the invention, the fruit feeder for squeezer machines contains a fruit storage bin, a fruit elevator from the storage bin to a higher point located above the squeezing device and a horizontal fruit conveyor which runs from the aforementioned higher point to a fruit reception mouth or trough of the squeezing device. The fruit elevator consists of a vertical conveyor with horizontal vanes, whose upwards or downwards path follows one of the walls of the fruit bin, the vanes acting as scoops which pick up and carry the fruit upwards. This conveyor has, at the end of the advancing or lifting path, means by which the fruit is expelled from the vanes, after which they are received by the horizontal conveyor. Said conveyor may be composed by two parallel endless vertical chains, with synchronised motion, alternately mounted between which are horizontal vanes with an angular profile acting as scoops to transport the fruit and horizontal flat vanes which act at the end of the advancing path to expel the fruit transported by the following angled vane. As for the horizontal conveyor, it is composed by two parallel rollers placed near each other, rotating in opposite directions and which have helical ribbings of opposite inclinations, directed so that they carry the fruit from their exit from the elevator to their entry in the squeezing device. The fruit feeder of the invention shall have means of detecting the absence of oranges in the horizontal roller conveyor, for example by employing photoelectric cells. This detection of the absence of fruit in the horizontal conveyor shall activate the fruit elevator which takes them from the storage bin and raises them until they fall on the horizontal conveyor. At this instant the photocell detects the presence of fruit and instructs the elevator to stop. The horizontal roller conveyor shall be activated at the same time as the squeezing device to guarantee the feeding of oranges to the machine, this process being repeated each time the absence of fruit in the horizontal conveyor is detected and each time the squeezing machine is turned on. The rollers of the horizontal conveyor shall turn from the inside towards the outside, the helical ribs being set so that they push the oranges in the direction of motion. The oranges are left resting on the conveyor unharmed. The fruit storage bin shall have an base tilted towards the elevating conveyor so ensuring that the squeezer receives every single orange contained in the bin, without jamming. The characteristics exposed as well as other characteristics of the invention are exposed below in greater detail with the aid of the attached drawings where an example of a non-limiting embodiment is shown. In the drawings: Figure 1 is a schematic perspective of a squeezer machine with the fruit feeder of the invention. Figure 2 is a front elevation of a squeezing machine with the feeder of the invention, without the front door. Figure 3 is a right side elevation of the machine in figure 2 where the corresponding side wall has been removed. Figure 4 is a top view of the machine in figure 2, at a greater scale and without the top of the same. Figure 5 is a side elevation , similar to figure 3, which shows in a greater scale the upper part of the elevator and the horizontal conveyor. The machine in figure 1 includes a fruit squeezing device, labelled by the number 1 and a fruit feeder composed by a fruit bin (2), a fruit elevator labelled by the number 3 and a horizontal conveyor labelled in general with the number 4. Elevator (3) transports the fruits (5) upwards from the interior of bin (2) to a point located above the squeezer. When fruits (5) reach this higher point they are pushed down onto the horizontal conveyor (4) which receives them and transports them to a reception trough or mouth (6) for squeezer (1). As is seen more clearly in figures 2 to 4, the fruit elevator is made up of two vertical and parallel chains (7), their motions synchronised, made up of links (8), figure 5. Between chains (7) alternately mounted are angled horizontal vanes (9) and horizontal flat vanes (10). Each of these vanes is attached, as seen clearly in figure 5, to a single link of each chain. Chains (7) are mounted on upper and lower reversing pinions connected to shafts (11) and (12), one of which , e.g. the upper one, is associated to a driving motor (13), figure 4. As is better appreciated in figure 5, vanes (9) have an obtuse angled profile and are attached on one of their sides (14) to links (8) of the chains, while the other end projects outwards. With relation to the direction of motion of the chains the other end (14) of the vanes is directed backwards. Vanes (9) and (10) occupy alternating or correlative adjoining positions. Vanes (10) are attached to the corresponding link at points near the longitudinal edge of said vanes. With the constitution discussed, along the forward and backward paths of the chains end (14) of vanes (9) runs parallel to the direction of motion of said chains, end (15) projecting out with an upwards tilt in the forward path of the chain and a downward tilt in the backward or downward path. With this constitution, face (15) of the angled vanes acts as a scoop for elevating fruits from the storage bin (2). As for flat vanes (10), they adopt a position parallel to the chain in its forward and backward path, while when direction changes they pivot as they are mounted on a single link, adopting in the upper part the position labelled 10', in which they shall push the fruit transported by the following angled vane, thus acting to eject the fruit which shall fall on horizontal conveyor (4). Said horizontal conveyor is composed of two horizontal and parallel cylinders (16) which turn in opposite directions, from the inside out, and have helical ribs (17) on their surface, figure 4, with opposite inclinations and directed so that during the rotation of the rollers they carry the fruit in the direction of the arrow in figure 4, from their reception from elevator (3) until they reach the trough or mouth (6) of the squeezer (1). Rollers (16) are at a distance from elevator (3) slightly greater than the width of face 1 of the angled vanes, so that the vanes are free to pass. Between the set of rollers (16) and the elevator (3) a hinged tray or ramp (18) may be placed on which the fruit arriving from elevator (3) may fall to roll until they fall between rollers (16). The elevator shall have a photoelectric cell in charge of detecting the presence or absence of fruit on conveyor (4). If no fruits are defected elevator (3) shall be activated and once the fruits arrive on conveyor (4) and are detected by the photoelectric cell it shall be disactivated. Conveyor (4) shall begin to move at the same time as the squeezer (1), whose activation may be achieved by , for example, the introduction of coins in the machine for which it shall be provided with the corresponding selector (20). The squeezing device shall have a set of showers, not shown, for its cleaning. Dirty water and peels may be collected in a lower container (21), figure 2. The machine shall incorporate a cooling system to maintain fruit at the desired temperature. Selector (20) shall incorporate a traditional coin purse or a card one. It may also include a cup feeder (22) which shall take these from the storage point to the filling area and final removal by the customer. As shown in figures 1 and 3, the base of bin (1) is tilted downwards towards the elevator conveyor, in front of which is the forward or upward path of elevator (3) for fruit collection.

Claims: Fruit feeder for squeezer machines comprising a fruit storage bin (2), a fruit elevator (3) running from storage bin (2) to a high point above the squeezer and a horizontal fruit conveyor (4) running from the aforementioned high point to a mouth or trough receiving fruit from the squeezer; whose elevator (3) is composed of two vertical and parallel endless chains (7) with synchronised motions, between which are alternately mounted angular profiled horizontal vanes (9) which act as scoops carrying the fruit, and flat horizontal vanes (10) which at the end of the forward motion path eject the fruit transported by the angled vanes (9); and whose horizontal conveyor (4) consists of two parallel rollers (16) placed next to each other, which turn in opposite directions and have a helical ribbing (17) with opposite inclination directed so that they carry the fruit as the rollers (4) turn, from their exit from the elevator to their entry in squeezer (1). Feeder as in claim 1, characterised in that the angular profile vanes (9) are mounted on the chains (7) on one of their faces (14), directed backwards with respect to the forward motion, and fixed between two links (8), one of each chain (7), so that during forward and backward motion of the chains (7) this end lies parallel to said motion, while the other end (15) projects outwards, with a rising and declining inclination respectively, in the first case acting as fruit transporting scoops. Feeder as in claim 1, characterised in that flat vanes (4) are fixed between two links, one of each chain (7) at points near the anterior longitudinal edge of said vanes (10), so that during the forward and backward motion of chain (7) these vanes (10) lie parallel to the motion and during change of direction they pivot so as to eject the fruit transported by the following angled vane (9). Feeder as in claim 1, characterised in that the horizontal conveyor (4) is placed near the end of the path of forward motion of the chain, parallel to the plane defined by said forward motion and separated from the same by a distance slightly greater than the widen of the projecting face of the angled vanes (9) to allow free passage for the fruit. Feeder as in claim 4, characterised in that between the horizontal roller conveyor (4) and the elevator (3) a hinged tray (18) is placed collecting fruits from the elevator (3) and tilting them onto the conveyor (4). Feeder as in claim 1, characterised in that the fruit storage bin (2) is placed in front of the elevator (3) and has an base which tilts downwards towards said elevator (3), ending in a mouth the elevation scoops enter, and not allowing the fruit to fall through said mouth.

Inventors: OLMOS FONT RAFAEL, OLMOS FONT, RAFAEL
Applicants: INNOVACIONES MECANICAS S A, INNOVACIONES MECANICAS, S.A.
Application year: 1998
Main classification: A23N1
IPC codes: A23N1, B30B9