Dispensing mechanism for a produce packaging machine

Information

  • Patent Grant
  • 6360787
  • Patent Number
    6,360,787
  • Date Filed
    Friday, September 29, 2000
    24 years ago
  • Date Issued
    Tuesday, March 26, 2002
    22 years ago
Abstract
A dispensing mechanism for metering produce into “clam shell” type containers carried past the dispensing mechanism by a conveyer, as part of an automated conveyer driven packaging system. The dispensing mechanism includes a side mounted hopper, a guide shoot, and a pair of elongated produce stops. The interior of the hopper is divided by internal partitions into a large bin and a dispensing queue. The body of the hopper has an inclined floor, and converging side and end walls that funnel produce toward two vertically oriented metering gates. One gate meters produce from the large bin into the queue and the second gate meters produce from the hopper into the containers. The guide shoot is pivotally connected to the hopper beneath the second gate. The guide shoot directs the produce from the hopper into the moving containers as they are carried along the conveyer. The produce stops are located in front of the shoot and run directly over and substantially parallel to the conveyer track to prevent the loss of produce and direct the produce into the center of the container base.
Description




This invention relates to automated packaging machines for small round produce, such as blueberries and cherry tomatoes, and in particular a dispensing mechanism for an automated conveyer driven produce packaging system.




BACKGROUND OF THE INVENTION




Thin plastic containers have become increasingly popular as containers for small produce, such as blueberries, cherry tomatoes, and other small fruit. These containers include a “clam shell” lid, which is integrally attached to one edge of the container and thus may be moved from an open position to a closed position in which the corners of the lid engage the corners of the receptacle to thereby close the container until it is opened by the consumer.




Automated systems have been developed for packaging small produce in clam shell containers. Conventional packaging systems include a variety of automated conveyers and mechanisms, which perform various packaging functions. Generally conveyers are used to transport produce and containers through the various automated work stations, where an automated mechanism performs some packaging operation, such as metering produce into the container or closing the containers after it is filled with produce. While automated systems reduce the time and man power required to get produce to market, cost, complexity and lack of flexibility present several practical and operational draw backs for small produce growers and packagers.




Conventional automated packaging systems use large gravity feed dispensing apparatus. The dispensing apparatus generally include a large hopper and an adjustable gate, which meters the flow of produce from the hopper into the containers, as the containers are carried along a conveyer. The size of the gate opening can be adjusted to increase or decrease the volume of produce flowing into the containers. Generally the gates are located at the bottom of the hoppers, which are suspended directly over the conveyers such that the produce falls directly downward into the containers. The mouth of the gate is elevated above the containers only a short distance to prevent the produce from being damaged by the fall.




Conventional gravity feed dispensing apparatus have had several draw backs. Conventional dispensing mechanisms often damage the produce as it is metered into the containers. Since the metering gates of overhead dispensing hoppers are located directly over the containers and conveyers, the weight of the bulk produce inside the hopper exerts significant pressure on the produce at the mouth of the gate. The pressure on the produce can shear and bruise the produce as it is force through the gate opening. The location of the hoppers directly above the conveyer mechanism, can also contribute to produce damage. If the gate opening is not adjusted to generate the appropriate flow rate, the containers may be over filled. Since the gate is elevated above the containers only a short distance, overfilling the container will result in the excess produce being scrapped off and out of the container by the sides of the gate, as the container is transported along the conveyer. Over filling not only results in shear damage and loss of produce, but may also prevent the container from being closed.




Conventional dispensing mechanisms fail to consistently meter the same volume of produce into each successive container on the conveyer. The location of metering gates in overhead dispensing hoppers creates a “plowing effect,” which prevents conventional dispensing mechanisms from metering a consistent volume of produce. The size of individual pieces of produce (berries and the like) varies greatly. As containers pass under the dispensing gate of an overhead hopper, large individual pieces of produce, caught in the gate and not sheared off by the gate of an overhead hopper, block or “plow” smaller pieces of produce from entering the containers. As a result, the volume of produce metered into each successive container varies greatly, with some containers being under filled and others being over filled. In addition, locating the hopper and gate directly over the conveyer also makes regulating the volume and flow rate of the produce through the gate more difficult. The pressure on the produce at the mouth of the gate exerted by the weight of the bulk produce fluctuates with the volume of produce inside the hopper. While the hopper is a gravity feed system, the fluctuation of the pressure exerted on the produce can influence the flow rate of the produce into the containers. Often, the volume of produce inside the hopper is not consistently maintained. As a result, the gate opening must be constantly adjusted to regulate the flow rate of the produce into the containers. While this problem can be reduced by using conveyers to deposit a steady stream of bulk produce into the dispensing hopper, additional conveyers add to the cost and complexity of the packaging system.




Recently, dispensing hoppers for produce packaging machines have been developed to address some of these problems. For example, one packaging system mechanism manufactured by A&B Blueberry Packaging of Hartford, Mich., includes a side located dispensing hopper, which meters produce through a gate in the container at an angle, instead of vertically from an over head hopper. Other dispensing hoppers have included internal baffles, which divert the flow of produce and reduce the pressure on the produce at the mouth of the metering gate. Nevertheless, these apparatus have not adequately addresses the problems of gravity feed dispensing apparatus.




SUMMARY OF THE INVENTION




The dispensing mechanism of this invention is used for dispensing produce into clam shell type containers as part of an automated packaging system. The dispensing mechanism is mounted to a packaging machine that includes a conveyer mechanism for transporting the containers past the dispensing mechanism. The dispensing mechanism is mounted to a subframe, which extends over the conveyer track of a conventional packaging machine. The dispensing mechanism of this invention includes a side mounted hopper, a guide shoot, and a pair of elongated produce stops. The interior of the hopper is divided by internal partitions into a large bin and a dispensing queue. The body of the hopper has an inclined floor, and converging side and end walls that funnel produce toward two vertically oriented metering gates. One gate meters produce from the large bin into the queue and the second gate meters produce from the queue into the containers. The guide shoot is pivotally connected to the hopper beneath the second gate. The guide shoot directs the produce from the hopper into the containers, and also is used to adjust the speed of produce from the hopper into the containers. The produce stops are located in front of the shoot and run directly over and substantially parallel to the conveyer track to prevent the loss of produce and direct the produce into the center of the container base. The stops can be adjusted horizontally and vertically to insure that the containers are filled evenly and without loss of produce.




The dispensing mechanism combines several unique features to address the draw backs of the conventional produce dispensing apparatus. The use of a divided hopper interior and two vertically oriented metering gates, along with the side mounted location of the hopper, allows produce to be dispensed into containers with less damage to the produce and with greater control of the flow rate. The angular attitude of the hopper and the shoot can be independently adjusted to vary the speed of the produce moving through the hopper and over the shoot, respectively. The weight of the bulk produce is exerted directly onto the metering gates. Produce flow through the gate openings at an angle to the direction of gravitational force; consequently, the force exerted on the produce passing through the mouth of the gate is significantly less and the flow rate is less effected by the volume of produce inside the hopper. Dividing the interior of the hopper into a large accumulating bin and a smaller dispensing queue divides the total weight of the produce in the hopper into two areas. The first gate meters produce from the bin into the queue to maintain a relatively constant volume of produce inside the queue. Maintaining a constant volume of produce inside the queue, allows the shoot gate to consistently meter constant flow rate from the hopper, which is unaffected by the volume of the produce inside the bin. In addition, the smaller volume of produce inside the queue, compared to the larger volume in the bin, exerts less pressure on the produce, which has less influence on the flow rate from the hopper into the containers. Consequently, the flow rate through the gate from the queue can be consistently maintained and controlled.




Accordingly, an advantage of this invention is to provide for a dispensing mechanism for an automated conveyer driven packaging system, which dispenses produce at a consistently controlled flow rate to evenly fill each successive container with a uniform volume of produce.




Another advantage of this invention is that the dispensing mechanism reduce damage to the produce.




Another advantage of this invention is that the dispensing mechanism reduces the effect of fluctuations in the volume of bulk produce in the hopper on the flow rate of produce into the containers.




Another advantage of this invention is that each functional component can be readily adjusted to control the volume, speed and flow rate of the produce.




Other advantages will become apparent upon a reading of the following description.











BRIEF DESCRIPTION OF THE DRAWINGS




A preferred embodiment of the invention has been depicted for illustrative purposes only wherein:





FIG. 1

is a side sectional view of the packaging machine of this invention;





FIG. 2

is a side sectional view taken along line


2





2


of

FIG. 3

having portions of the packaging machine cut away to show produce being deposited into a container;





FIG. 3

is a top view of the packaging machine of this invention showing produce being deposited in the containers;





FIG. 4

is a side sectional view taken along line


4





4


of

FIG. 3

;





FIG. 5

is a side sectional view taken along line


5





5


of FIG.


3


;











DESCRIPTION OF THE PREFERRED EMBODIMENT




The preferred embodiment herein described is not intended to be exhaustive or to limit the invention to the precise form disclosed. It is chosen and described to best explain the invention so that others skilled in the art might utilize its teachings.




The dispensing mechanism


10


of this invention is illustrated as part of a conveyer driven packaging machine


12


. Dispensing mechanism


10


is designed to meter small round produce (designated generally by numeral


2


) into conventional “clam shell” type containers


4


. In the figures, dispensing mechanism


10


is illustrated with blueberries and clam shell type containers, although the teaching of this invention can be incorporated for any small produce and other types of containers. As shown, containers


4


include a lid


8


and a base receptacle


6


, which are connected by a deformable hinge


9


along adjacent sides thereof. Generally, containers


4


are constructed of a clear plastic so that the contents are readily visible to consumers.




Packaging machine


12


includes a fixed frame or table


14


upon which dispensing mechanism


10


and various other packaging components are mounted. As shown, packaging machine


12


includes a conveyer mechanism (designated generally by numeral


20


). Conveyer mechanism


20


is of conventional design and is well known to those skilled in the art; therefore it will not be described in great detail. Conveyer mechanism


20


transports containers


4


past dispensing mechanism


10


along a conveyer track


21


, which runs the length of table


14


. Conveyer mechanism


20


includes a pair of conveyer belts


22


, and a plurality of rollers


24


about which belts


22


are trained. Although not shown in the figures, but well known in the art, conveyer mechanism


20


also includes an electric motor and control panel, which drives the conveyer belts and controls the speed of the conveyer belts. Packaging machine


10


may also include packaging components and mechanisms, such as, container de-nesters, produce sizers and container closing mechanisms, as desired without changing the scope of this invention. Such components and mechanisms are well known and need not be described to illustrate the teaching of this invention.




Dispensing mechanism


10


of this invention is mounted to an elevated subframe


30


, which transverses over conveyer track


21


. Subframe


30


includes two cross members


32


suspended above the conveyer track


21


by two support legs


34


. A container lid guide rail


94


is suspended from legs


34


beneath dispensing mechanism


10


. Guide rail


94


runs parallel to conveyer mechanism to hold lid


8


in a flat open position as they move under dispensing mechanism


10


.




Dispensing mechanism


10


includes a hopper


40


, a shoot


70


, and a pair of produce stops


80


, all adjustably mounted to a subframe


30


. As shown in

FIG. 1

, hopper


40


is adjustably mounted to subframe


30


above and to the side of conveyer track


21


. Hopper


40


is adjustably mounted to subframe


30


so that the height of the hopper may be raised and lowered with respect to conveyer track


21


by conventional adjusting bolts


36


and hex nuts


37


, which extend through a side bracket


38


. This allows machine


10


to be used with containers of various depths. In addition, the angular attitude of hopper


40


may be adjusted by bolts


36


and nuts


37


(hopper can be tilted toward and away from the conveyer).




The body of hopper


40


is formed by an inclined floor


42


, a peripheral end wall


43


and two peripheral side walls


44


. As shown in

FIG. 3

, hopper floor


42


has a trapezoidal shape and peripheral side walls


44


, which converge generally toward conveyer track


21


. The shape of hopper


40


, with the converging side walls and the inclined floor, serves to funnel produce


2


inside the hopper toward conveyer track


21


. As shown in

FIG. 3

, the interior of hopper


40


is divided into two sections: a large receiving bin


50


and a dispensing queue


60


. Bin


50


is defined by hopper floor


42


, peripheral end wall


43


, peripheral side walls


44


and two converging internal partitions


46


. Queue


60


is defined by hopper floor


42


and two parallel internal side partitions


48


. Hopper


40


also includes two adjustable metering gates


52


and


62


. Each gate


52


and


62


includes a sliding baffle


54


,


64


, respectively, interposed between two sets of parallel flanges


56


,


66


, respectively. Baffles


54


and


64


can be positioned vertically to manually adjust the size of gate openings


53


and


63


, respectively. Generally, baffles


54


,


64


are held in position by fiction with flanges


56


,


66


, but may be secured by fasteners (not shown) if necessary. Gate


52


(the bin gate) meters produce from bin


50


into queue


60


, and gate


62


(queue gate) meters produce from queue


60


into guide shoot


70


.




Hopper


40


also includes an electrical vibrator


90


mounted to the bottom of hopper floor


42


, which facilitates the movement of produce


2


through gates


52


and


62


. Vibrator


90


is of conventional design and includes an electric motor, which rotates an eccentric weight to generate a slight vibration in the hopper. Preferably, vibrator


90


is controlled by electrical controls as with the conveyer. This type of electrical vibrator is well known in the art.




As shown, guide shoot


70


is a U-shaped channel formed by flat floor


72


and two vertical side walls


74


. As shown in

FIG. 3

, queue


60


and guide shoot


70


are of substantially equal width. Guide shoot


70


is pivotally connected to hopper


40


beneath the mouth of queue gate


62


by a hinge


76


, which allows the guide shoot to pivot upward and downward. As shown in

FIG. 3

, the end of guide shoot


70


terminates directly over conveyer track


21


. Guide shoot


70


can be secured at various positions by fasteners


78


that extend between two slots in the shoot side walls


74


and internal side partitions


48


of hopper


40


.




Produce stops


80


are located over conveyer track


21


directly in front of guide shoot


70


. Stops


80


deflect produce falling off shoot


70


into containers


4


and prevent produce


2


from falling out of containers


4


onto table


14


. Stops


80


also direct the flow of produce


2


into the center of containers


4


. As shown, each stop


80


includes an elongated arm


82


mounted to subframe


30


by two sets of threaded adjustment bolts


86


,


88


and hex nuts


87


,


89


. Both pair of adjustment bolts


86


,


88


extend through a pair of L-shaped brackets


84


and are secured by hex nuts


87


,


89


. Vertical adjustment bolts


86


extend downward through slots in cross member


32


and bracket


84


, to allow arms


82


to be raised and lowered. Horizontal adjustment bolts


88


extend through bracket


84


to allow arms


82


to be moved horizontally over conveyer track


21


toward or away from guide shoot


70


.




Dispensing mechanism


10


of this invention also incorporates a conveyer belt vibrating mechanism (designated generally as numeral


92


) into conveyer mechanism


20


to level and settle produce


2


inside container base


6


prior to closing container lid


8


. Conveyer belt vibrating mechanism


92


is a conveyer roller with an eccentric axis


26


. Roller


26


is located down conveyer track


21


past hopper


40


and guide shoot


70


. Movement of conveyer belts


22


rotates roller


26


about its eccentric axis, which in turn generates a slight vertical oscillation in the conveyer belts. The oscillation is transmitted to containers, which facilitates the leveling of produce


2


inside container base


6


.




Operation




The operation of dispensing mechanism


10


and packaging machine


12


can be now detailed. As shown, the open containers


4


are transported by conveyer belts


22


along conveyer track


21


past dispensing mechanism


40


in the direction indicated by arrow A. Container bases


6


are seated atop conveyer belts


22


within conveyer track


21


and lids


8


lay open atop table


12


along side of the conveyer track. Containers


4


are deposited into conveyer track


21


in close succession, either manually or by an automated de-nesting mechanism (not shown, but well known in the art). As shown in

FIG. 3

, containers


4


are carried along conveyer track


21


in close side-by-side succession. Containers


4


are positioned in close succession so that no produce is lost between containers as a steady flow of produce is deposited from the dispensing mechanism into the passing containers. As containers


4


pass under subframe


30


and dispensing mechanism


10


, lids are held open and flat against table


14


by rails


94


.




The flow rate of produce from the hopper is generally a product of the speed of the produce metered through the gates and volume of the produce metered through the gates. The speed of the produce metered through the gates is generally a function of the angle of inclination of hopper floor


42


, while the volume of the produce metered through the gates is a function of the size of the gate openings. Hopper vibrator


90


facilitates the movement of produce through gates


52


and


62


by reducing the effects of friction and the general viscosity of the produce. The angular attitude of hopper


40


and the size of the gate openings


53


and


63


are adjusted to provide an appropriate produce flow rate to filled the passing containers transported at a desired conveyer speed.




Bulk quantities of produce


2


are deposited into bin


50


of hopper


40


, either manually or, alternatively, from a separate conveyer apparatus (not shown). Produce


2


funnels under the force of gravity down inclined hopper floor


42


towards bin gate


52


guided by convergent side wall


44


and internal partitions


46


. Bin gate


52


meters produce


2


into queue


60


, such that a relatively constant volume of produce


2


is inside queue


60


at all times. Queue gate


62


meters produce from queue


60


onto and down guide shoot


70


at a constant rate of flow.




As shown in

FIGS. 1 and 2

, produce


2


moves down guide shoot


70


and gently off the end into the center of container base


6


guided by stop


80


. Produce


2


is deposited into a tall mound (generally designated by numeral


3


) at the center of moving container base


6


. Moving past guide shoot


70


, the filled containers


4


move over roller


26


. The oscillation from roller


26


created by the rotation about its eccentric axis generates vibrations, which are transmitted through conveyer belts


22


into the passing filled containers


4


to level produce


2


within container base


6


. Once produce


2


is leveled across container base


6


, lids


8


are folded over container base


6


to close containers


4


. Typically an automated closing mechanism, not shown but well known in the art, is incorporated into packaging machine


10


at the terminal end of conveyer track


21


for this purpose, although, the containers may be closed manually as they move toward the terminal end of the conveyer track.




Advantages




One skilled in the art will note several advantages provided by the combined features of dispensing mechanism


10


for automated produce packaging systems. While some of the features of the dispensing mechanism of this invention are known in the art, these features combine with the unique design and operation of hopper


40


, guide shoot


70


and stops


80


to create a more functional and adjustable dispensing apparatus, which consistently controls the rate of produce flow into containers


4


with decreased produce damage.




The side mounted hopper and gate design eliminate the “plowing effect” and allow produce to be dispensed into containers with less damage to the produce and with greater control of the flow rate. Unlike over head hoppers, hopper


40


is located above and off to the side of conveyer track


21


, and gate openings


53


and


63


are vertically oriented in the end walls of the hopper. Produce falls laterally into the containers, unobstructed by the gates or the shoot. The weight of the bulk produce is born by inclined floor


42


and not directly on gates


52


and


62


. Produce


2


passes through gate openings


53


and


63


at an angle to the direction of gravitational force; consequently, the force exerted on produce


2


passing through gate openings


53


and


63


is significantly less. Because the weight of the bulk produce


2


is exerted directly on gates


52


and


62


, the flow rate is less effected by the volume of produce inside hopper


40


. The speed of the produce within hopper


40


and through gate openings


53


and


63


can be controlled by varying the angle of inclination of the hopper using adjusting bolts


36


and nuts


37


.




The use of a divided hopper interior and two metering gates also reduces the effect of the weight of the produce on the flow rate and facilitates a consistent rate of flow of produce at reduced pressure. Dividing the interior of hopper


40


into a large receiving bin


50


and a smaller dispensing queue


60


divides the total weight of the produce into two separate areas. Since the area of dispensing queue


60


is much less than the area of bin


50


, the pressure exerted on the produce within queue


60


is significantly less than that in bin


50


. Using bin gate


52


to meter a first flow of produce from the larger bin into the smaller queue, then using queue gate


62


to meter a second final flow of produce from the queue down guide shoot


70


into the containers enables greater control and consistency of the flow rate into containers


4


. Bin gate


52


meters produce from bin


50


into queue


60


to maintain a relatively constant volume of produce inside the queue. Queue gate


62


meters produce onto guide shoot


70


and into containers


4


. With a constant volume of produce maintained inside queue


60


, the pressure exerted by the weight of the produce inside the queue is relatively constant. Consequently, the flow rate metered by queue gate


62


is constant and unaffected by the volume of the produce inside the bin.




Guide shoot


70


and produce stops


80


also contribute uniquely to dispensing mechanism


10


of this invention. Since shoot


70


and opening


63


have the same width, the shoot transports the same volume of produce as metered through queue gate


62


. Guide shoot


70


not only directs produce


2


from hopper


40


into containers


4


, but also is used to adjust the speed of the produce from the hopper into the containers. The angle of inclination of guide shoot


70


can be adjusted to increase or decrease the speed at which the volume of produce is metered through queue gate


62


into containers


4


. The flow of produce dispensed from hopper


40


can be adjusted by varying the angle guide shoot


70


to slow or speed the flow into containers


4


. Increasing the speed of the produce flow across guide shoot


70


creates a slight Bernoulli effect, whereby the pressure exerted on the produce decreases and the produce falls gently into containers


4


. Stops


80


prevent the loss of the produce and deflect the produce into the center of container base


6


so that container


4


can be filled evenly as the containers are carried by conveyer belts


22


.




The combination of features and adjustments of dispensing mechanism


10


creates a constant volume of produce entering the passing containers. By reducing the pressure and force exerted on the volume of produce entering the containers, dispensing mechanism


10


can provide a flow of the produce to uniformly fill each successive container relatively independent of the conveyer speed, thereby eliminating the need to precisely match the flow rate to the speed of the conveyer. The volume of produce dispensing into each successive container is more consistent, thereby reducing overfilled and under filled containers.




It is understood that the above description does not limit the invention to the details given, but may be modified within the scope of the following claims.



Claims
  • 1. In an automated produce packaging system (12) for packaging produce (2) into containers (4) carried on a conveyer (20), a dispensing mechanism (10) for dispensing a volume of produce in to the container carried past the dispensing mechanism by the conveyer, the dispensing mechanism (10) comprising:hopper (40) elevated above and spaced laterally from the containers carried by the conveyer, the hopper (40) defining an interior for receiving produce therein, including interior partitions (46, 48) for dividing the hopper interior into a first interior area (50) and a second interior area (60), and having a first opening (53) for dispensing produce form the first interior area into the second interior area and a second opening (63) for dispensing produce from the second interior area into the containers; first gate means (52) disposed within the interior of the hopper for metering produce through the first opening from first interior area into the second interior area so as to maintain a constant volume of produce within the second area; second gate means (62) disposed within the hopper for metering the produce through the second opening from the second interior area at a substantially constant rate of flow; and means (70, 80) for directing produce from the second gate means laterally into the containers at a selectable angle.
  • 2. The mechanism of claim 1 wherein the first opening (53) and the second opening lie in a substantially vertical plane, thereby produce is metered laterally through the first opening and the second opening.
  • 3. The mechanism of claim 1 wherein the first gate means (52) includes a baffle (54) and means (56) for selectably positioning in the baffle vertically within the first opening to vary the size of the first opening.
  • 4. The mechanism of claim 1 wherein the second gate means (62) includes a baffle (64) and means (66) for selectably positioning in the baffle vertically within the second opening (63) to vary the size of the first opening.
  • 5. The mechanism of claim 1 wherein the guide means includes an elongated shoot (70) for transporting the produce dispensed from the second gate means laterally into the containers, and means (76) for pivotally connecting one end of the shoot to the hopper adjacent the second opening to selectively position the other end of the shoot over the container at varying angles so as to regulate the speed of the produce dispensed into the container.
  • 6. The mechanism of claim 5 wherein the guide means also include means (80) for deflecting produce dispense from the second gate means and moving off the shoot into the container.
  • 7. The mechanism of claim 6 herein deflecting means (80) includes two elongated arms (82) and means ( 84, 86-89) for selectively suspending the arms over the container and atop one another so as to deflect produce falling from the shoot into the container.
  • 8. The mechanism of claim 1 wherein the hopper (40) includes a floor (42) and plurality of peripheral walls (43, 44), which define the interior thereof, the floor being inclined towards the first opening and the second opening and having an angle of inclination which facilitates movement of the produce under the force of gravity through the first opening and the second opening.
  • 9. The mechanism of claim 8 wherein the hopper (40) also includes means (36, 37) for selectably adjusting the angle of inclination of the floor to selectably control the speed of the produce through the first opening and second opening.
  • 10. The mechanism of claim 1 wherein the hopper also includes means for vibrating the floor so as to overcome the inertia and static resistance of the produce inside the hopper interior and urge the produce through the first opening and the second opening.
  • 11. The mechanism of claim 1 also includes means for transmitting vibration to the containers to level the produce within the container after the produce has been deposited into the containers.
  • 12. The mechanism of claim 1 wherein the second interior area has a smaller volume than the first interior area.
  • 13. In an automated produce packaging system (12) for packaging produce (2) into containers (4) carried on a conveyer (20), a dispensing mechanism (10) for dispensing a volume of produce into the container carried past the dispensing mechanism by the conveyer, the dispensing mechanism (10) comprising:hopper (40) elevated above and spaced laterally from the containers carried by the conveyer, the hopper (40) defining an interior for receiving produce therein, including interior partitions (46, 48) for dividing the hopper interior into a first interior area (50) and a second interior area (60), and having a first opening (53) for dispensing produce form the first interior area into the second interior area and a second opening (63) for dispensing produce from the second interior area into the containers; first gate means (52) disposed within the interior of the hopper for metering the produce through the first opening from the first interior area into the second interior area so as to maintain a constant volume of produce within the second area; second gate means (62) disposed within the hopper for metering the produce through the second opening from the second interior area at a substantially constant rate of flow; an elongated shoot (70) for transporting the produce dispensed from the second gate means laterally into the containers; hinge (76) for pivotally connecting one end of the shoot to the hopper adjacent the second opening to selectively position the other end of the shoot over the container at varying angles so as to regulate the speed of the produce dispensed into the container; two elongated arms (82) for deflecting produce dispensed from the second gate means and moving off the shoot into the container; and means (84, 86-89) for selectively suspending the arms over the container and atop one another so as to deflect produce falling from the shoot into the container.
  • 14. The mechanism of claim 13 wherein the first opening (53) and the second opening lie in a substantially vertical plane, thereby produce is metered laterally through the first opening and the second opening.
  • 15. The mechanism of claim 13 wherein the hopper (40) includes a floor (42) and plurality of peripheral walls (43, 44), which define the interior thereof, the floor being inclined towards the first opening and the second opening and having an angle of inclination which facilitates movement of the produce under the force of gravity through the first opening and the second opening.
  • 16. The mechanism of claim 15 wherein the first gate means (52) includes a baffle (54) and means (56) for selectably positioning in the baffle vertically above the floor within the first opening to vary the size of the first opening.
  • 17. The mechanism of claim 15 wherein the second gate means (62) includes a baffle (64) and means (66) for selectably positioning in the baffle vertically above the floor within the second opening (63) to vary the size of the first opening.
  • 18. The mechanism of claim 15 wherein the hopper (40) also includes means (36, 37) for selectably adjusting the angle of inclination of the floor to selectably control the speed of the produce through the first opening and second opening.
US Referenced Citations (3)
Number Name Date Kind
2921713 Zanotto et al. Jan 1960 A
4066107 Karp et al. Jan 1978 A
4677283 Lewis Jun 1987 A