CA2490667A1 - Control systems and methods of dispensing items - Google Patents
Control systems and methods of dispensing items Download PDFInfo
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- CA2490667A1 CA2490667A1 CA 2490667 CA2490667A CA2490667A1 CA 2490667 A1 CA2490667 A1 CA 2490667A1 CA 2490667 CA2490667 CA 2490667 CA 2490667 A CA2490667 A CA 2490667A CA 2490667 A1 CA2490667 A1 CA 2490667A1
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Abstract
A control system for regulating a dispenser that includes a feeder bowl and a plurality of dispensing paths is disclosed. The control system includes a control unit for controlling a rotation drive for rotating the dispensing paths, a feeder bowl vibration device for vibrating the feeder bowl, and at least one dispensing path vibration device for vibrating the dispensing paths, such that the feeder bowl receives a plurality of items and supply the items uniformly to each of the dispensing paths, and the dispensing paths dispense the items singularly.
Description
PATENT
Attorney Docket No. 016354.0206 CONTROL SYSTEMS AND METHODS OF DISPENSING ITEMS
John Baranowski [0001] This application claims priority from U.S. Patent Application No.
10/601,675 entitled "Control Systems and Methods of Dispensing Items," which vsras filed on June 24, 2003, and claims priority from U.S: Provisional Patent Application No. '60/390,363 entitled "Control Systems and Methods of Dispensing Items," and filed on June 24, 2002, and U.S.
Provisional Patent Application No. 60/454,645 entitled "Control Systems and Methods of Dispensing Items,"
and filed on March 17, 2003, the disclosures of which are incorporated herein by reference in their entirety.
1o BACKGROUND OF THE INVENTION
1. Field of the Invention [0002) The present invention relates generally to control systems and methods of controlling;the dispensing of items. In particular, the present invention relates to control systems and methods of controlling the dispensing of items from a vibratory dispenser.
is 2. Description o~Related Art [0003] Known control systems and methods of controlling the dispensing of items may be used to operate dispensers that receive and dispense a plurality of items.
Known control systems and methods may operate dispensers, so that dispensers may dispense a plurality of items at different rates. Moreover, known control systems and methods may count dispensed 2o items, so that items may be dispensed in predetermined quantities. Known control systems may measure a physical characteristic of dispensed items; e.g:, known control systems may weigh dispensed items.
Attorney Docket No. 016354.0206 CONTROL SYSTEMS AND METHODS OF DISPENSING ITEMS
John Baranowski [0001] This application claims priority from U.S. Patent Application No.
10/601,675 entitled "Control Systems and Methods of Dispensing Items," which vsras filed on June 24, 2003, and claims priority from U.S: Provisional Patent Application No. '60/390,363 entitled "Control Systems and Methods of Dispensing Items," and filed on June 24, 2002, and U.S.
Provisional Patent Application No. 60/454,645 entitled "Control Systems and Methods of Dispensing Items,"
and filed on March 17, 2003, the disclosures of which are incorporated herein by reference in their entirety.
1o BACKGROUND OF THE INVENTION
1. Field of the Invention [0002) The present invention relates generally to control systems and methods of controlling;the dispensing of items. In particular, the present invention relates to control systems and methods of controlling the dispensing of items from a vibratory dispenser.
is 2. Description o~Related Art [0003] Known control systems and methods of controlling the dispensing of items may be used to operate dispensers that receive and dispense a plurality of items.
Known control systems and methods may operate dispensers, so that dispensers may dispense a plurality of items at different rates. Moreover, known control systems and methods may count dispensed 2o items, so that items may be dispensed in predetermined quantities. Known control systems may measure a physical characteristic of dispensed items; e.g:, known control systems may weigh dispensed items.
[0004) In known control systems, however, the accuracy of the count of dispensed items may be affected by operation of known dispensers. For example, the ability of known control 25 systems to operate dispensers to dispense items singularly, e~Q., in a single file,.may improve the accuracy of the count of dispensed items. If two or more items are dispensed simultaneously, known control systems ,may count the items as a single item, thereby undermining the accuracy of the count of dispensed items. Thus, known dispensing control systems may reduce or limit i i i PATENT
Attorney Docket No. 016354.0206 the rate at which items are dispensed in order to improve the accuracy of a count of dispensed items.
PATENT
Attorney Docket No. 016354.0206 SUMMARY OF THE INVENTION
Attorney Docket No. 016354.0206 the rate at which items are dispensed in order to improve the accuracy of a count of dispensed items.
PATENT
Attorney Docket No. 016354.0206 SUMMARY OF THE INVENTION
[0005] A need has arisen for dispensing control systems and methods of controlling the dispensing of items, so that a plurality of items may be received and dispensed by ~ dispenser in a riianner that improves the accuracy of a count or a measurement, or both of dispensed items.
More specifically, a need has arisen for control systems and methods of controlling . the dispensing of items from a rotary, vibratory dispenser, such that items may be dispensed singularly, ~ in a single file or the like, at greater rates than in known dispensing systems and method.
More specifically, a need has arisen for control systems and methods of controlling . the dispensing of items from a rotary, vibratory dispenser, such that items may be dispensed singularly, ~ in a single file or the like, at greater rates than in known dispensing systems and method.
[0006] A-further..~eed-bas arisen-Por-dispensing--control systems and methods that may 1'0 accurately count or measure, or both, items dispensed from a dispenser.
For example, a further need has arisen for a control system and method of dispensing items that measures a physical characteristic, e.~., a weight, a volume, a density, or the like, of each dispensed item, so that predeterriiined quantities of items may be dispensed and so that each item in a predetermined quantity of items may have a measured physical characteristic that is within a predetermined range of measurements [0007] A dispenser of the present invention may be used to dispense predetermined quantities of a variety.of food items, e.~., dried food items, frozen food items, thawed'food items, or the like. For example, such a dispenser may dispense dried food items, such as dried pasta, dehydrated vegetables, or the like. Moreover, a dispenser according to the present invention may 2o be used to dispense frozen food items, e. e., frozen meat, frozen vegetables, or the like. The dispenser of the present invention may dispense items of varying physical characteristic, weight, volume, density, temperature, or the like, including non-food items.
For example, the dispenser of the present invention may dispense fasteners, hardware, medical items, electronic parts, mechanical parts, metallic and non-metallic items, or the like.
For example, a further need has arisen for a control system and method of dispensing items that measures a physical characteristic, e.~., a weight, a volume, a density, or the like, of each dispensed item, so that predeterriiined quantities of items may be dispensed and so that each item in a predetermined quantity of items may have a measured physical characteristic that is within a predetermined range of measurements [0007] A dispenser of the present invention may be used to dispense predetermined quantities of a variety.of food items, e.~., dried food items, frozen food items, thawed'food items, or the like. For example, such a dispenser may dispense dried food items, such as dried pasta, dehydrated vegetables, or the like. Moreover, a dispenser according to the present invention may 2o be used to dispense frozen food items, e. e., frozen meat, frozen vegetables, or the like. The dispenser of the present invention may dispense items of varying physical characteristic, weight, volume, density, temperature, or the like, including non-food items.
For example, the dispenser of the present invention may dispense fasteners, hardware, medical items, electronic parts, mechanical parts, metallic and non-metallic items, or the like.
[0008] In an embodiment of the invention, a control system for regulating a rotary, vibratory dispenser comprising a feeder bowl and a plurality of dispensing paths comprises a control unit. The control unit controls each of a rotation drive for rotating the feeder bowl, a feeder bowl vibration device for vibrating the feeder bowl, and at least one dispensing path vibration device for vibrating the dispensing paths, so that the feeder bowl may receive a PATENT
Attorney Docket No. 016354.0206 plurality of iterizs and supply those items uniformly to each of the dispensing paths, and so that the dispensing paths may dispense the items singularly.
Attorney Docket No. 016354.0206 plurality of iterizs and supply those items uniformly to each of the dispensing paths, and so that the dispensing paths may dispense the items singularly.
[0009) In a another erilbodiment of the invention, a method of controlling the dispensing of items comprises the steps of delivering items onto a feeder; bowl at a predetermined rate of delivery, rotating a feeder bowl at a predetermined rotational speed, vibrating the feeder bowl at a predetermined feeder bowl vibrational setting, so that the items are dispensed uniformly to a plurality of dispensing paths positioned around the feeder bowl, and vibrating the dispensing paths at a predetermined dispensing path vibrational setting, so that the dispensing paths dispense the items singularly.
to [0010) In yet another embodiment of the present invention, a control system for regulating a dispenser which comprises a feeder bowl and :a plurality of dispensing paths comprises a control unit. The control unit controls a rotation drive for rotating the dispensing paths, a feeder bowl vibration device for vibrating the feeder bowl, and at least one dispensing path vibration device for vibrating the dispensing paths, such that the feeder bowl receives a plurality of items and supply the items uniformly to each of the dispensing paths, and the dispensing paths dispense the items singularly.
[0011 ] In still yet another embodiment of the present invention, a control system for regulating a dispenser, in which the dispenser comprises a feeder bowl and one or more dispensing paths, comprises a control unit. The control unit controls each of a feeder bowl 2o vibration device for vibrating the feeder bowl, a rotation drive for rotating the one or more dispensing paths, and at least one dispensing path vibration device for vibrating the one or more dispensing paths. The control system also comprises one or more dispensing heads. Each of the one or more dispensing heads receives iteriis from at least one of the one or more dispensing paths, and comprises a dispensing chute for directing a first plurality of the received items toward the dispenser, in which at least one physical characteristic of each of the first plurality of the received items is within a predetermined range of physical characteristics. Each dispensing head also comprises a diversion chute for directing a second plurality of the received items away from the dispenser.
i i i PATENT
Attorney Docket No. 016354.4206 [0012] Other objects, features, and advantages of embodiments of the present invention will be apparent to persons of ordinary skill in the art from the following description of preferred embodiments with reference to the accompanying drawings.
BRIEF DESCRIPTION OF DRAWINGS
[0013] The present invention may be understood more readily with reference to the following drawings.
[0014] Fig. l shows a rotary, vibratory dispenser for use with a control system, according to ail embodiment of the present invention.
[0015] Fig. 2a shows a cross-sectional view of a dome-shaped feeder bowl according to 1o an embodiment of the present invention.
[0016] Fig. 2b shows a cross-sectional view of a conical-shaped feeder bowl according to an embodiment of the present invention.
[0017] Fig. 2c shows a cross-sectional view of a sloped feeder bowl according to an embodiment of the present invention.
[0018) Fig. 3 shows a control system according to an embodiment of the present invention.
{0019] Fig. 4a shows a top view of a channel according to the present invention.
[0020] Fig. 4b shows an end view of the channel of Fig. 4a, according to the present invention 2o [0021] Fig. 4c shows a perspective view of the channel of Fig. 4a, according to the present invention.
(0022] Fig. 5 shows a flow chart of a control method according to an embodiment of the present invention.
[0023] Figs. 6a-6b show an operation of a dispensing head according to an embodiment of the present invention.
[0024] Fig. 7 shows a dispenser for use with a control system, .according to another embodiment of the present invention.
[0025] Figs. 8a-8b show an operation of a dispensing head according to another embodiment of the present invention PATENT
Attorney Docket No. 016354.0206 DETAILED DESCRIPTION OF PREFERRED EMBOD>ZvJENTS
[0026] As shown in Fig. 1, a rotary, vibratory dispenser 100 for use with the control system of the present invention includes a feeder bowl 102 for receiving a plurality of items to be dispensed from rotary, vibratory dispenser 100, a plurality of dispensing paths 103 positioned around feeder bowl 102 for receiving items supplied by feeder bowl 102, a feeder bowl rotation drive 108 for rotating feeder bowl 102, a feeder bowl vibration device 109 for vibrating feeder bowl 102, and one or more dispensing path vibration devices 110 for vibrating each dispensing paths .103, so that dispensing paths 103 may dispensing items singularly, sensing units 117 for measuring a physical characteristic, e.Q., a volume, a weight, a density, or the like; of each singularly-dispensed item, and dispensing heads 105 for receiving items dispensed from each dispensing path 103 and for directing predetermined quantities of items to containers. A bulk delivery apparatus 104, ~, a hopper, a conveyor, or the like, may deliver items to rotary, vibratory dispenser 100, e;~., to feeder bowl 101 of rotary, vibratory dispenser 100.
[0027] Rotary, vibratory dispenser 100 may be used to receive and dispense a variety of i5 food items, ~ dried food items, frozen food items, thawed food items, or the like. For example, rotary, vibratory dispenser 100 may dispense dried . food items, such as dried pasta, dehydrated vegetables, or the like. Moreover, rotary, vibratory dispenser 100 may be used to dispense frozen food items, e.~., frozen meats, frozen vegetables, or the like. Rotary, vibratory dispenser 100 may be used to dispense items of varying physical characteristic, ~ varying Weight, volume, density, temperature, or the like, including non-food items of varying physical characteristic. For example, the rotary, vibratory dispenser may dispense fasteners; hardware, medical items, electronic parts, mechanical parts, metallic and non-metallic items, or the like.
. [0028) Fig. 1 shows a feeder bowl 102 with an attenuated conical shape and a flat peripheral edge 2a. Feeder bowl 102 may be substantially dome-shaped, substantially conical shaped, substantially flat, or the like (not shown). Each configuration of feeder bowl may include a flat peripheral edge. Fig. Za shows a cross-section of a dome-shaped feeder bowl 102' with a substantially planar peripheral edge 102a'. Fig. 2b shows a cross-section of a conical-shaped feeder bowl 102" with a substantially planar peripheral edge 102a".
[0029) Fig. 2c shows a feeder bowl 102"' according to yet another embodiment of the present invention. Feeder bowl 102"' may comprise a plurality of sloped portions, and each of PATENT
Attorney Docket No. 016354.0206 the sloped portions may be separated. by a substantially cylindrical portion.
For example, feeder bowl 102"' may comprise a first sloped portion 202 and a second sloped portion 204 connected to first sloped portion 202 via a substantially cylindrical portion 206.
Cylindrical portion 206 may form a vertical drop between first sloped portion 202 and second sloped portion 204. In an embodiment, a thiclmess of cylindrical portion 206 may be selected, such that a distance between fast sloped portion 202 and second sloped portion 204 is about 25.4 mm (about 1 inch).
Moreover, first sloped portion 202, second sloped portion 204, and substantially cylindrical portion 206 may be stationary portions, i.e., non-rotating portions, or vibratory portions, or both.
First sloped portion 202 and second sloped portion 204 may gradually accelerate the fall of items to dispensed by bulk delivery apparatus 106 to feeder bowl 102"'.
Specifically, a slope S1 of .
second sloped portion 204 may be greater than a slope S2 of first sloped portion 202; such that an item's speed increases between first sloped portion 202 and second sloped portion 204. In a preferred embodiment, first sloped portion 202 may be inclined in a downward direction relative to a first horizontal plane 250, and slope Sl of first sloped portion 202 may be about 9.5° relative to first horizontal plane 250. Moreover, second sloped portion 204 ~riay be inclined in a downward direction relative to a second horizontal plane 260 which is parallel to first horizontal plane 250, and slope S2 of second sloped portion 204 may be about 12°
relative to second horizontal plane 260. This preferred embodiment achieved superior performance with most items tested. Nevertheless, in yet another embodiment, slope S 1 of first sloped portion 202 and 2o slope S2 of second sloped portion 204 may be varied, depending on the type of item dispensed from bulk delivery apparatus 106.
[0030] Feeder bowl 102"' also may comprise a sloped member 208 fixed to dispensing paths 102, such that sloped member 208 may rotate with dispensing paths 102.
Sloped member 208 may be separate from second sloped portion 204, such that a gap 210 is formed between second sloped portion 204 and sloped member 208. In an embodiment, sloped member 208 niay be inclined in a downward direction relative to a third horizontal plane 270 which is parallel to second horizontal plane 260. In operation, items fall from second sloped portion 204 onto the surface of sloped member 208 and, subsequently may become airborne. A slope S3 of sloped member 208 relative to third horizontal plane 270 may be selected to reduce the amplitude of the 3o airborne items. For example, slope S3 of sloped portion 208 may be between about 1 ° and about _7_ PATENT
. Attorney Docket No. 016354.0206 15°; and in a preferred embodiment, slope S3 of sloped portion 208 is about 15°. Moreover, dispensing paths 103 may be inclined in a downward direction, such that a slope of dispensing paths 103 is about the same as slope S3 of sloped member 208. Although in Fig.
2c sloped member 208 is depicted as a single portion member, sloped member may be divided into a plurality of sloped portions having varying slopes, such as described above with respect to~first sloped portion 202, second sloped portion 204, and substantially cylindrical portion 206.
[0031] Referring again to Fig. 1, dispensing paths 103 may be positioned around. feeder Bowl 102, ~ around a periphery of feeder bow1.102. Dispensing paths 103 may receive items supplied by feeder bowl 102. As described in more detail below, dispensing paths 103, in turn, operate to position items in single file along a longitudinal axis of each dispensing path 103, so tliatdispensing paths 103 may dispense items singularly from a distal end of each dispensing path 103. Moreover, each dispensing path 103 may include -one or more item-dispensing channels (not shown) for dispensing the items singularly from each channel.
[0032] A bulk delivery apparatus 104 may be used to deliver items to rotary, vibratory IS dispenser 100. Bulk delivery apparatus 104 may be positioned adjacent to rotary, vibratory dispenser 100, as shown in Fig. 1, to deliver items to rotary, vibratory dispenser 100, ~ to feeder bowl 102 of rotary, vibratory dispenser 100. Bulk delivery apparatus 104 may include a , eT~., a vibration device, a motor, or the like, for controlling a rate of delivery of items from Bulk delivery apparatus 104 to rotary, vibratory dispenser 100. Adjustment of enables adjustment of the rate of delivery of items from bulk delivery apparatus 104.
[0033] As shown in Fig. 1, bulk delivery apparatus 104 may include a hopper 104 and hopper vibration device 104a for vibrating hopper 104, so that items may be delivered at different rates to feeder bowl 102 of rotary, vibratory dispenser 100. Such hopper vibration devices 104a may include Syntron~ Electromagnetic Vibrators, which are available from FMC
2~ Technologies Material Handling Solutions of Homer City, Pennsylvania. Other hoppers 104 and hopper vibration devices 104a may include the Skako Comassa Feeders, which are available from Skako, Inc. of Faaborg, Denmark.
[0034] 1n another embodiment of the invention, bulk delivery apparatus 104 may include a conveyor or the like for delivering items to feeder bowl 102 of rotary, vibratory dispenser 100.
In a further embodiment of the invention, the rate of delivery of items from bulk delivery _g_ PATENT
Attorney Docket No. 016354.0206 apparatus 104 to rotary, vibratory dispenser 100 may be regulated by adjusting an apeiture, or the like, of bulk delivery apparatus 104.
[0035) Bulk delivery apparatus 104 may include a sensing unit 104b for counting or measuring items delivered from bulk delivery apparatus 104 to feeder bowl 102.
Sensing unit 104b iriay include a scale, ~ a strain gauge, for weighing items in bulk delivery apparatus 104 and for determining a weight of items delivered from bulk delivery apparatus 104 to feeder bowl 102 in a given time period. ~ Sensing unit 104b may include one or more optic sensors, infrared vsensors, electromagnetic radiation sensors, proximity sensors, capacitative sensors, or the like, such as are available from IFM Efector, Inc., Exton, Pennsylvania. Sensing unit 104b may be l0 positioned at bulk delivery apparatus ;106 to count, e.,g_, to. sense or the like, items dispensed from bulk delivery apparatus, so that :bulk delivery apparatus 104 may deliver items to rotary, vibratory dispenser 100 at a rate sufEcient to enable rotary, vibratory dispenser 100 to dispense a predetermined number of items to containers or the like at a desired rate, e.
Q., at a desired number of containers per minute, or the like.
[0036] Dispensing paths 103 may be positioned around feeder bowl 102 to receive items supplied,by feeder bowl 102. Dispensing paths 103 may be positioned around a periphery of . feeder bowl 102 and extend radially from the periphery of feeder bowl 102, as shown in »g. 1, to receive items supplied by feeder bowl 102. The length of each dispensing path 103 may vary depending upon a variety of factors, such as the space available for the rotary, vibratory 2'o dispenser, a physical characteristic of items to be dispensed, a desired dispensing rate, a rotational speed of the dispensing paths 103, or the like. The number of.dispensing paths 103 may vary. For example, forty-eight (48) dispensing paths 103 may be positioned around feeder bowl 102. According to one embodiment of the invention, one hundred (100) dispensing paths 103 may be positioned around feeder bowl 102. In another embodiment of the invention, twelve dispensing paths 103 may be positioned around feeder bowl 102. However, any number of dispensing paths 103 may be positioned around feeder bowl 102.
[0037) Each dispensing path 103 may comprise one or more item-dispensing channels, each of which channels may receive items supplied by feeder bowl 102 and dispense items singularly. For example, each dispensing path 103 may comprise a single channel. However, 3o each dispensing path 103 may include two or more channels, each of which channels may _g_ PATENT
Attorney Docket No. 016354.0206 dispense items singularly to a dispensing head 105. Thus, according to an embodiment of the 'invention in which rotary, vibratory dispenser 100 is configured with forty-eight (48) dispensing paths 103 and each dispensing path 103 includes two channels, rotary, vibratory clispenser 100 may dispense items from each of the ninety-six (96) channels. The number of channels may vary depending upon the number of containers to be filled at a rotary, vibratory dispenser, the number of dispensing heads 105 and sensing units 117, or the like.
[0038] Each channel may have a substantially constant width and extend radially from feeder bowl 102, as shown in Fig. 1. Fig. 4a shows a pair of channels 403 of increasing width.
. Each channel 403 has a portion of narrower width 403a at one end and a portion of greater width 403b at another end. The portion of narrower width 403a of each channel 403 may be positioned adjacent to feeder bowl 102 to receive items supplied from feeder bowl 102.
Depending upon the number of channels 403 positioned around feeder bowl 102 and the dimensions of each channel 403, outer edges 405 of adjacent channels 403 may contact. In this way, the plurality of channels 403 may form a. continuous item-dispensing surface extending from a periphery of feeder bowl 102 to receive a plurality of items supplied by feeder bowl 102.
[0039] Each channel 403 may have a substantially V-shaped cross-section, such that a pair of channels 403 may have a substantially W-shaped cross-section, as shown in Figs. 4b and 4c. Each channel may have a U-shaped, so that a pair of such channels has a double-U-shaped crass-sectional configuration. Further, a depth of each channel 403 may increase as each channel 403 extends from a portion of narrower width 403a to a portion of greater width 403b, as shown in Fig. 4c. Thus, a depth of each channel 403 may increase as each channel 403 extends radially from a periphery of feeder bowl 102.
[0040] The angle of offset a of adjacent sides of a channel 403 may vary, as well. For example, the angle of offset a may be about 90°, as shown in Fig. 4b.
However, the angle of offset a may be an acute angle or an obtuse angle, depending upon a physical characteristic, e.~., a weight, a volume, a density, or the like, of items to be dispensed. The cross-sectional configuration, depth, and angle of offset a of each channel 403 may vary according to a physical characteristic of items to be dispensed, so that each channel 403 may receive a plurality of items supplied by feeder bowl 102, sort the items into a single file as the items travel along each PATENT
Attorney Docket No: 016354.0206 channel 403, and dispense the items sizlgularly from a distal end of each channel 403 to improve the accuracy of a count or a measurement or both of each dispensed item.
[0041] A sensing unit 117 may be positioned at each dispensing path 103 of rotary, vibratory dispenser 100 to measure a physical characteristic, ~ a weight, a volume, a density, or the like, or each item dispensed from a dispensing path 103. In embodiments of the invention in which a dispensing path 103 may include two or more item-dispensing channels, a sensing unit 117 may be positioned at each channel, ~ at a distal end of each channel of a dispensing path 103, so that each sensing unit 117 may measure a physical characteristic of each item °ilispensed from each channel, so that an accurate count of dispensed items may be obtained. As shown in Wig. 1, a sensing unit 117 may be positioned at each dispensing head 105, e.g_, at an opening of each dispensing head 105.
[0042] Sensing unit 117 may include optic seHSeared-sensors;-eapaei-t~ti-ve-sensofs, :photoelectric sensors, laser sensors, fiber optic sensors, proximity sensors, or the like, such as are available from IFM Efector, Inc., Exton, Pennsylvania. For example, capacitative sensors may detect the presence of conductive and non-conductive items, so that an accurate count may be made of items dispensed from each dispensing path 103 or channel. Optic sensors may detect each item as items are dispensed from each dispensing path 103 or channel. A
sensing unit 117 according to this embodiment of the invention may be positioned at a distal end of each item-dispensing channel for counting each item dispensed from each channel.
2o [0043] Sensing unit 117 may include a scale, or the like, for measuring a weight of each item dispensed from each channel. In another embodiment of the invention, sensing unit 117 may include an optic sensor or an electromagnetic radiation sensor, such as those available from Batching Systems, Inc., Prince Frederick, Maryland, for measuring a volume of each dispensed item. Each electromagnetic radiation sensor may include a source of electromagnetic radiation directed onto an electromagnetic radiation detector, so that a volume of each item passing between the electromagnetic radiation source and electromagnetic radiation detector may be determined based on fluctuations in the amount of electromagnetic radiation detected as each item passes between the electromagnetic radiation source and the electromagnetic radiation detector.
to [0010) In yet another embodiment of the present invention, a control system for regulating a dispenser which comprises a feeder bowl and :a plurality of dispensing paths comprises a control unit. The control unit controls a rotation drive for rotating the dispensing paths, a feeder bowl vibration device for vibrating the feeder bowl, and at least one dispensing path vibration device for vibrating the dispensing paths, such that the feeder bowl receives a plurality of items and supply the items uniformly to each of the dispensing paths, and the dispensing paths dispense the items singularly.
[0011 ] In still yet another embodiment of the present invention, a control system for regulating a dispenser, in which the dispenser comprises a feeder bowl and one or more dispensing paths, comprises a control unit. The control unit controls each of a feeder bowl 2o vibration device for vibrating the feeder bowl, a rotation drive for rotating the one or more dispensing paths, and at least one dispensing path vibration device for vibrating the one or more dispensing paths. The control system also comprises one or more dispensing heads. Each of the one or more dispensing heads receives iteriis from at least one of the one or more dispensing paths, and comprises a dispensing chute for directing a first plurality of the received items toward the dispenser, in which at least one physical characteristic of each of the first plurality of the received items is within a predetermined range of physical characteristics. Each dispensing head also comprises a diversion chute for directing a second plurality of the received items away from the dispenser.
i i i PATENT
Attorney Docket No. 016354.4206 [0012] Other objects, features, and advantages of embodiments of the present invention will be apparent to persons of ordinary skill in the art from the following description of preferred embodiments with reference to the accompanying drawings.
BRIEF DESCRIPTION OF DRAWINGS
[0013] The present invention may be understood more readily with reference to the following drawings.
[0014] Fig. l shows a rotary, vibratory dispenser for use with a control system, according to ail embodiment of the present invention.
[0015] Fig. 2a shows a cross-sectional view of a dome-shaped feeder bowl according to 1o an embodiment of the present invention.
[0016] Fig. 2b shows a cross-sectional view of a conical-shaped feeder bowl according to an embodiment of the present invention.
[0017] Fig. 2c shows a cross-sectional view of a sloped feeder bowl according to an embodiment of the present invention.
[0018) Fig. 3 shows a control system according to an embodiment of the present invention.
{0019] Fig. 4a shows a top view of a channel according to the present invention.
[0020] Fig. 4b shows an end view of the channel of Fig. 4a, according to the present invention 2o [0021] Fig. 4c shows a perspective view of the channel of Fig. 4a, according to the present invention.
(0022] Fig. 5 shows a flow chart of a control method according to an embodiment of the present invention.
[0023] Figs. 6a-6b show an operation of a dispensing head according to an embodiment of the present invention.
[0024] Fig. 7 shows a dispenser for use with a control system, .according to another embodiment of the present invention.
[0025] Figs. 8a-8b show an operation of a dispensing head according to another embodiment of the present invention PATENT
Attorney Docket No. 016354.0206 DETAILED DESCRIPTION OF PREFERRED EMBOD>ZvJENTS
[0026] As shown in Fig. 1, a rotary, vibratory dispenser 100 for use with the control system of the present invention includes a feeder bowl 102 for receiving a plurality of items to be dispensed from rotary, vibratory dispenser 100, a plurality of dispensing paths 103 positioned around feeder bowl 102 for receiving items supplied by feeder bowl 102, a feeder bowl rotation drive 108 for rotating feeder bowl 102, a feeder bowl vibration device 109 for vibrating feeder bowl 102, and one or more dispensing path vibration devices 110 for vibrating each dispensing paths .103, so that dispensing paths 103 may dispensing items singularly, sensing units 117 for measuring a physical characteristic, e.Q., a volume, a weight, a density, or the like; of each singularly-dispensed item, and dispensing heads 105 for receiving items dispensed from each dispensing path 103 and for directing predetermined quantities of items to containers. A bulk delivery apparatus 104, ~, a hopper, a conveyor, or the like, may deliver items to rotary, vibratory dispenser 100, e;~., to feeder bowl 101 of rotary, vibratory dispenser 100.
[0027] Rotary, vibratory dispenser 100 may be used to receive and dispense a variety of i5 food items, ~ dried food items, frozen food items, thawed food items, or the like. For example, rotary, vibratory dispenser 100 may dispense dried . food items, such as dried pasta, dehydrated vegetables, or the like. Moreover, rotary, vibratory dispenser 100 may be used to dispense frozen food items, e.~., frozen meats, frozen vegetables, or the like. Rotary, vibratory dispenser 100 may be used to dispense items of varying physical characteristic, ~ varying Weight, volume, density, temperature, or the like, including non-food items of varying physical characteristic. For example, the rotary, vibratory dispenser may dispense fasteners; hardware, medical items, electronic parts, mechanical parts, metallic and non-metallic items, or the like.
. [0028) Fig. 1 shows a feeder bowl 102 with an attenuated conical shape and a flat peripheral edge 2a. Feeder bowl 102 may be substantially dome-shaped, substantially conical shaped, substantially flat, or the like (not shown). Each configuration of feeder bowl may include a flat peripheral edge. Fig. Za shows a cross-section of a dome-shaped feeder bowl 102' with a substantially planar peripheral edge 102a'. Fig. 2b shows a cross-section of a conical-shaped feeder bowl 102" with a substantially planar peripheral edge 102a".
[0029) Fig. 2c shows a feeder bowl 102"' according to yet another embodiment of the present invention. Feeder bowl 102"' may comprise a plurality of sloped portions, and each of PATENT
Attorney Docket No. 016354.0206 the sloped portions may be separated. by a substantially cylindrical portion.
For example, feeder bowl 102"' may comprise a first sloped portion 202 and a second sloped portion 204 connected to first sloped portion 202 via a substantially cylindrical portion 206.
Cylindrical portion 206 may form a vertical drop between first sloped portion 202 and second sloped portion 204. In an embodiment, a thiclmess of cylindrical portion 206 may be selected, such that a distance between fast sloped portion 202 and second sloped portion 204 is about 25.4 mm (about 1 inch).
Moreover, first sloped portion 202, second sloped portion 204, and substantially cylindrical portion 206 may be stationary portions, i.e., non-rotating portions, or vibratory portions, or both.
First sloped portion 202 and second sloped portion 204 may gradually accelerate the fall of items to dispensed by bulk delivery apparatus 106 to feeder bowl 102"'.
Specifically, a slope S1 of .
second sloped portion 204 may be greater than a slope S2 of first sloped portion 202; such that an item's speed increases between first sloped portion 202 and second sloped portion 204. In a preferred embodiment, first sloped portion 202 may be inclined in a downward direction relative to a first horizontal plane 250, and slope Sl of first sloped portion 202 may be about 9.5° relative to first horizontal plane 250. Moreover, second sloped portion 204 ~riay be inclined in a downward direction relative to a second horizontal plane 260 which is parallel to first horizontal plane 250, and slope S2 of second sloped portion 204 may be about 12°
relative to second horizontal plane 260. This preferred embodiment achieved superior performance with most items tested. Nevertheless, in yet another embodiment, slope S 1 of first sloped portion 202 and 2o slope S2 of second sloped portion 204 may be varied, depending on the type of item dispensed from bulk delivery apparatus 106.
[0030] Feeder bowl 102"' also may comprise a sloped member 208 fixed to dispensing paths 102, such that sloped member 208 may rotate with dispensing paths 102.
Sloped member 208 may be separate from second sloped portion 204, such that a gap 210 is formed between second sloped portion 204 and sloped member 208. In an embodiment, sloped member 208 niay be inclined in a downward direction relative to a third horizontal plane 270 which is parallel to second horizontal plane 260. In operation, items fall from second sloped portion 204 onto the surface of sloped member 208 and, subsequently may become airborne. A slope S3 of sloped member 208 relative to third horizontal plane 270 may be selected to reduce the amplitude of the 3o airborne items. For example, slope S3 of sloped portion 208 may be between about 1 ° and about _7_ PATENT
. Attorney Docket No. 016354.0206 15°; and in a preferred embodiment, slope S3 of sloped portion 208 is about 15°. Moreover, dispensing paths 103 may be inclined in a downward direction, such that a slope of dispensing paths 103 is about the same as slope S3 of sloped member 208. Although in Fig.
2c sloped member 208 is depicted as a single portion member, sloped member may be divided into a plurality of sloped portions having varying slopes, such as described above with respect to~first sloped portion 202, second sloped portion 204, and substantially cylindrical portion 206.
[0031] Referring again to Fig. 1, dispensing paths 103 may be positioned around. feeder Bowl 102, ~ around a periphery of feeder bow1.102. Dispensing paths 103 may receive items supplied by feeder bowl 102. As described in more detail below, dispensing paths 103, in turn, operate to position items in single file along a longitudinal axis of each dispensing path 103, so tliatdispensing paths 103 may dispense items singularly from a distal end of each dispensing path 103. Moreover, each dispensing path 103 may include -one or more item-dispensing channels (not shown) for dispensing the items singularly from each channel.
[0032] A bulk delivery apparatus 104 may be used to deliver items to rotary, vibratory IS dispenser 100. Bulk delivery apparatus 104 may be positioned adjacent to rotary, vibratory dispenser 100, as shown in Fig. 1, to deliver items to rotary, vibratory dispenser 100, ~ to feeder bowl 102 of rotary, vibratory dispenser 100. Bulk delivery apparatus 104 may include a , eT~., a vibration device, a motor, or the like, for controlling a rate of delivery of items from Bulk delivery apparatus 104 to rotary, vibratory dispenser 100. Adjustment of enables adjustment of the rate of delivery of items from bulk delivery apparatus 104.
[0033] As shown in Fig. 1, bulk delivery apparatus 104 may include a hopper 104 and hopper vibration device 104a for vibrating hopper 104, so that items may be delivered at different rates to feeder bowl 102 of rotary, vibratory dispenser 100. Such hopper vibration devices 104a may include Syntron~ Electromagnetic Vibrators, which are available from FMC
2~ Technologies Material Handling Solutions of Homer City, Pennsylvania. Other hoppers 104 and hopper vibration devices 104a may include the Skako Comassa Feeders, which are available from Skako, Inc. of Faaborg, Denmark.
[0034] 1n another embodiment of the invention, bulk delivery apparatus 104 may include a conveyor or the like for delivering items to feeder bowl 102 of rotary, vibratory dispenser 100.
In a further embodiment of the invention, the rate of delivery of items from bulk delivery _g_ PATENT
Attorney Docket No. 016354.0206 apparatus 104 to rotary, vibratory dispenser 100 may be regulated by adjusting an apeiture, or the like, of bulk delivery apparatus 104.
[0035) Bulk delivery apparatus 104 may include a sensing unit 104b for counting or measuring items delivered from bulk delivery apparatus 104 to feeder bowl 102.
Sensing unit 104b iriay include a scale, ~ a strain gauge, for weighing items in bulk delivery apparatus 104 and for determining a weight of items delivered from bulk delivery apparatus 104 to feeder bowl 102 in a given time period. ~ Sensing unit 104b may include one or more optic sensors, infrared vsensors, electromagnetic radiation sensors, proximity sensors, capacitative sensors, or the like, such as are available from IFM Efector, Inc., Exton, Pennsylvania. Sensing unit 104b may be l0 positioned at bulk delivery apparatus ;106 to count, e.,g_, to. sense or the like, items dispensed from bulk delivery apparatus, so that :bulk delivery apparatus 104 may deliver items to rotary, vibratory dispenser 100 at a rate sufEcient to enable rotary, vibratory dispenser 100 to dispense a predetermined number of items to containers or the like at a desired rate, e.
Q., at a desired number of containers per minute, or the like.
[0036] Dispensing paths 103 may be positioned around feeder bowl 102 to receive items supplied,by feeder bowl 102. Dispensing paths 103 may be positioned around a periphery of . feeder bowl 102 and extend radially from the periphery of feeder bowl 102, as shown in »g. 1, to receive items supplied by feeder bowl 102. The length of each dispensing path 103 may vary depending upon a variety of factors, such as the space available for the rotary, vibratory 2'o dispenser, a physical characteristic of items to be dispensed, a desired dispensing rate, a rotational speed of the dispensing paths 103, or the like. The number of.dispensing paths 103 may vary. For example, forty-eight (48) dispensing paths 103 may be positioned around feeder bowl 102. According to one embodiment of the invention, one hundred (100) dispensing paths 103 may be positioned around feeder bowl 102. In another embodiment of the invention, twelve dispensing paths 103 may be positioned around feeder bowl 102. However, any number of dispensing paths 103 may be positioned around feeder bowl 102.
[0037) Each dispensing path 103 may comprise one or more item-dispensing channels, each of which channels may receive items supplied by feeder bowl 102 and dispense items singularly. For example, each dispensing path 103 may comprise a single channel. However, 3o each dispensing path 103 may include two or more channels, each of which channels may _g_ PATENT
Attorney Docket No. 016354.0206 dispense items singularly to a dispensing head 105. Thus, according to an embodiment of the 'invention in which rotary, vibratory dispenser 100 is configured with forty-eight (48) dispensing paths 103 and each dispensing path 103 includes two channels, rotary, vibratory clispenser 100 may dispense items from each of the ninety-six (96) channels. The number of channels may vary depending upon the number of containers to be filled at a rotary, vibratory dispenser, the number of dispensing heads 105 and sensing units 117, or the like.
[0038] Each channel may have a substantially constant width and extend radially from feeder bowl 102, as shown in Fig. 1. Fig. 4a shows a pair of channels 403 of increasing width.
. Each channel 403 has a portion of narrower width 403a at one end and a portion of greater width 403b at another end. The portion of narrower width 403a of each channel 403 may be positioned adjacent to feeder bowl 102 to receive items supplied from feeder bowl 102.
Depending upon the number of channels 403 positioned around feeder bowl 102 and the dimensions of each channel 403, outer edges 405 of adjacent channels 403 may contact. In this way, the plurality of channels 403 may form a. continuous item-dispensing surface extending from a periphery of feeder bowl 102 to receive a plurality of items supplied by feeder bowl 102.
[0039] Each channel 403 may have a substantially V-shaped cross-section, such that a pair of channels 403 may have a substantially W-shaped cross-section, as shown in Figs. 4b and 4c. Each channel may have a U-shaped, so that a pair of such channels has a double-U-shaped crass-sectional configuration. Further, a depth of each channel 403 may increase as each channel 403 extends from a portion of narrower width 403a to a portion of greater width 403b, as shown in Fig. 4c. Thus, a depth of each channel 403 may increase as each channel 403 extends radially from a periphery of feeder bowl 102.
[0040] The angle of offset a of adjacent sides of a channel 403 may vary, as well. For example, the angle of offset a may be about 90°, as shown in Fig. 4b.
However, the angle of offset a may be an acute angle or an obtuse angle, depending upon a physical characteristic, e.~., a weight, a volume, a density, or the like, of items to be dispensed. The cross-sectional configuration, depth, and angle of offset a of each channel 403 may vary according to a physical characteristic of items to be dispensed, so that each channel 403 may receive a plurality of items supplied by feeder bowl 102, sort the items into a single file as the items travel along each PATENT
Attorney Docket No: 016354.0206 channel 403, and dispense the items sizlgularly from a distal end of each channel 403 to improve the accuracy of a count or a measurement or both of each dispensed item.
[0041] A sensing unit 117 may be positioned at each dispensing path 103 of rotary, vibratory dispenser 100 to measure a physical characteristic, ~ a weight, a volume, a density, or the like, or each item dispensed from a dispensing path 103. In embodiments of the invention in which a dispensing path 103 may include two or more item-dispensing channels, a sensing unit 117 may be positioned at each channel, ~ at a distal end of each channel of a dispensing path 103, so that each sensing unit 117 may measure a physical characteristic of each item °ilispensed from each channel, so that an accurate count of dispensed items may be obtained. As shown in Wig. 1, a sensing unit 117 may be positioned at each dispensing head 105, e.g_, at an opening of each dispensing head 105.
[0042] Sensing unit 117 may include optic seHSeared-sensors;-eapaei-t~ti-ve-sensofs, :photoelectric sensors, laser sensors, fiber optic sensors, proximity sensors, or the like, such as are available from IFM Efector, Inc., Exton, Pennsylvania. For example, capacitative sensors may detect the presence of conductive and non-conductive items, so that an accurate count may be made of items dispensed from each dispensing path 103 or channel. Optic sensors may detect each item as items are dispensed from each dispensing path 103 or channel. A
sensing unit 117 according to this embodiment of the invention may be positioned at a distal end of each item-dispensing channel for counting each item dispensed from each channel.
2o [0043] Sensing unit 117 may include a scale, or the like, for measuring a weight of each item dispensed from each channel. In another embodiment of the invention, sensing unit 117 may include an optic sensor or an electromagnetic radiation sensor, such as those available from Batching Systems, Inc., Prince Frederick, Maryland, for measuring a volume of each dispensed item. Each electromagnetic radiation sensor may include a source of electromagnetic radiation directed onto an electromagnetic radiation detector, so that a volume of each item passing between the electromagnetic radiation source and electromagnetic radiation detector may be determined based on fluctuations in the amount of electromagnetic radiation detected as each item passes between the electromagnetic radiation source and the electromagnetic radiation detector.
PATENT
Attorney Docket No. 016354.0206 [0044] : According to a still further embodiment of the present invention, each sensing unit 117 may include a pair of sensing units. For example sensing unit 117 may inchtde a scale and an electromagnetic sensor for measuring a weight and a volume, respectively, of each iiispensed item. Sensing unit 117 may include an optical or proximity sensor and a scale for counting and measuring a weight, respectively, of each dispensed item. Thus, such a dual sensing unit may further improve the accuracy of a count, or a measurement, or both of each dispensed item.
:,[0045] A dispensing head 105 may be positioned at each dispensing path 103, adjacent to a distal end of each dispensing path 103, to receive items dispensed from each ;vdispensing path 103 and its associated item-dispensing channel. In embodiments of the invention in which a dispensing path 102 may include more than one item-dispensing channel, a dispensing head 105 may be positioned adjacent to each channel, ~ adjacent to a distal end of each channel of a dispensing path 102, to receive items dispensed from each channel.
[0046] Dispensing head 105 may include a bifurcation device 106 for directing received .
.15 items to a first chamber 106a or a second chamber 106b of each dispensing head 105. Moreover, each dispensing head 105 may include a holding chamber 107. Holding chamber 107 may be positioned at a lower portion of each dispensing head 105. Holding chamber, 107 may be selectively reconfigured to direct items within dispensing head 105 in a first direction, e.g., toward a container. or the like, or to divert items in a second direction, ~
away from a container or_ the like. In one embodiment of the present invention, holding chamber 107 may include a pair of doors 107x, 107b, as shown in Fig. 1.
[0047] Referring to Figs. 6a-6h, in a modification of this embodiment of the present invention, holding chamber 107 may be replaced by a first holding charriber 107' and a second holding chamber 107", door 107a~may be replaced by a first door 107a', and door 107b may be replaced by a guide wall 107b' and a second door 107b". First holding chamber 107' may be positioned below second holding chamber 107", and when second door 107b" is in a closed position, holding chambers 107' and 107" may form a continuous chamber.
Nevertheless, when second door 107b" is in an open position, second door 107b" may prevent the items from reaching first holding chamber 107'. Specifically, bifurcation device 106 may receive the items 3o which pass through the opening in dispensing head 117, such that the items are positioned within PATENT
Attorney Docket No. 016354.0206 first chamber 106a or second chamber 106b. When bifurcation device 106 receives a predetermined number of items which have acceptable physical characteristics, e~, physical characteristics which are within a predetermined range of physical characteristics, bifizrcation device 106 may direct the received items into first holding chamber 107' via second holding chamber 107". First door 107x' then may move from'a closed positioned to an open position, such that the items received by first holding chamber 107' are directed toward the container.
Nevertheless, if bifurcation device 106 receives any item which does not have acceptable ~.chazacteristics, e~Q., physical characteristics which are greater than or less than the predetermined range of physical characteristics, second door 107b" may move from the closed position to the io open position, and bifiircation device 106 subsequently may direct the received items into second holding chamber 107". When bifurcation device 106 directs the received items into second holding chamber 107 "; bifurcation device 106 may receive new items, such that the new items inay be. positioned within first chamber 106a or second chamber 106b.
Moreover, when the received items reach second holding chamber 107", second door 107b" may direct the received items away from the container. Consequently, when bifizrcation device 106 receives an unacceptable item, each of the items received by the bifurcation device 106 may be diiected away from the container without having to wait for bifiucation device 106 to receive the predetermined number of items. Moreover, the new items may be received by bifurcation device 106 without having to wait for second door 107b" to direct the received items away from the 2o container.
[0048) Referring to Flgs. 13a and 13b, in another modification of the embodiment of the present invention depicted in Wig. l, bifurcation device 106 may be replaced by a first directional gate 106' and a second directional gate 106 ", and holding chamber 107 may be replaced by a first holding chamber 1107a and a second holding chamber 1107b. In this embodiment, door 107a may be replaced by an accept door 107a", door 107b may be replaced by a recirculate door 107b", and dispensing head 105 may comprise means for releasing items from second holding chamber 1107b. For example, the means for releasing may comprise a roller 810 connected to recirculate door 107b". Moreover, dispenser 100 may comprise means for separating items, ~, a first strainer (not shown) and/or a second strainer (not shown).
Specifically, the first strainer may be operationally positioned between bulk delivery apparatus 104 and dispensing PATENT
Attorney Docket No. 016354.0206 head 105, such that the first strainer may prevent items having a diameter which is greater than a first predetermined diameter from entering dispensing head 105. The second strainer may be operationally positioned between second holding chamber 1107b and bulk delivery apparatus 104, such that the second strainer prevents items which are released from second holding chamber 1107b and have a diameter which is less than a second predetermined diameter from reentering dispensing head 105.
[0049] In operation, first directional gate 106' may receive the items which pass through the first strainer and an opening (not numbered) in dispensing head 105, such that the items are -positioned within first chamber 106a or second chamber 106b. When first directional gate 106' receives a predetermined number of items which passed through at least the first strainer and have acceptable physical characteristics, e.~., physical characteristics which are within a predetermined range of physical characteristics, second directional gate 106"
is positioned in a first position and first directional gate 106' may direct the received items into first holding chamber 1107a. The container then may move to a position which is substantially, vertically aligned with first holding chamber 1107a, and accept door 107a" then may move from a closed positioned to an open position, such that the items received by fi=st holding chamber 1107a are directed toward bulk delivery apparatus 104 and into the container. When first directional gate 106' directs the received items into first holding chamber 1107a, first directional gate 106' may receive new items, such that the new items may be positioned within first chamber 106a or second chamber 106b.
[0050] Nevertheless, if first directional gate 106' receives any item which does not have acceptable characteristics, ~ physical characteristics which are greater than or less than the predetermined range of physical characteristics, second directional gate 106"
may move from the first position to a second position, and first directional gate 106' subsequently may direct the received items into second holding chamber 1107b. When first directional gate 106' directs the received items into second holding chamber 1107b, first directional gate 106' may receive new items, such that the new items may be positioned within first chamber 106a or second chamber 106b. Moreover, dispensing head 105 may orbit around bulk delivery apparatus 104, and the means for releasing may further comprise means for altering an angle of roller 810, such that . when the angle of roller 810 is altered, recirculate door 107b" opens. For example, the means PATENT
Attorney Docket No. 0163$4.0206 far altering the angle of roller 810 may comprise a raised portion (not shown). When roller 810 contacts the raised portion, roller 810 may move in an upward direction, and rec~irculate door I07b" automatically opens, such that the items in second holding chamber 1107b are directed away from bulk delivery apparatus 104 and onto a conveyer (not shown). The second strainer j then separates the items on the conveyer having a diameter less than the second predeteriiiined diameter from the items on the conveyer having a diameter greater than or equal to the second predetermined diameter. Moreover, the items on the conveyer having a diameter greater than or equal to the second predetermined diameter are delivered to bulk delivery apparatus 104.
Consequently,.when a batch of items is unacceptable because one of the items in the batch does .not have acceptable characteristics, those items in the batch which have acceptable characteristics may be redelivered to dispensing; head 105 via bulk delivery apparatus 104, such that the number of acceptable items which dispenser 100 disposes of may be reduced. Moreover, bvcaltse the items which are not dispensed into containers are directed away from bulk delivery apparatus 104, these items may not adversely affect the components of dispenser 100. For example, the food items may not contact or adhere to the components of dispenser 100. Further, because the items which are not dispensed into containers are directed away from bulk delivery apparatus 104, the need to clean dispenser 100 may occur less frequently, and dispenser 100 more easily may be cleaned.
[0051] Referring again to Fig. l, in another embodiment of the present invention, holding 2o chamber 107 may include two pairs of doors for directing items to a container or for diverting items away from a container. Based on a measurement and count of each dispensed item by sensing units 117, each dispensing head 105 may be activated to direct predetermined quantities of items, each of whose measured physical characteristics is within a predetermined range, of measurements, to a container or the like. Moreover, based on measured values of each dispensed item, dispensing heads 105 may direct predetermined volumes, weights, or the like, to a container. Dispensing heads 105 may be activated to divert dispensed items whose measured physical characteristic is greater than or less than a predetermined range of measurements away from a container or the like.
[0052] Feeder bowl rotation drive 108 may rotate feeder bowl 102 at different rotational 3o speeds. Moreover, feeder bowl rotation drive 108 may rotate feeder bowl 102 and dispensing PATENT
Attorney Docket No. 016354.0206 paths 103 at a rotational speed that corresponds to a desired rate of filling containers at rotary, vibratory dispenser 100. For example, feeder bowl rotation drive 108 may rotate a frame that supports feeder bowl 102 and dispensing paths 103, as shown in Fig. 1. If rotary, vibratory iiispenser 100 includes 48 dispensing paths 103 and each dispensing path 103 includes twb iteni~
S ~ dispensing channels, and rotary, vibratory dispenser 100 must fill 480 containers per minute, feeder bowl rotation drive 103 may rotate feeder bowl 101 and dispensing paths 103 at five (5) revolutions per minute (rpm), so that rotary, vibratory dispenser may dispense items to 480 containers per minute: If each dispensing path 103 include a single item-dispensing channel, . feeder bowl rotation drive 108 may rotate feeder bowl 102 and dispensing paths 1:03 at ten (10) ib ten rpm, so that rotary, vibratory dispenser 100 may dispense items to 480 containers per minute.
[0053] According to an embodiment of the invention in which dispensing paths 103 may rotate independently of feeder bowl 102, feeder bowl rotation drive 108 may rotate dispensing paths 103 at a substantially similar rotational speed as feeder bowl 102, or feeder:bowl rotation drive 108 may rotate dispensing paths 103 at a different rotational speed than feeder bowl 102, 15 e.g_, via a transmission (not shown), so that a rotational speed of dispensing paths 103 may be ' varied relative to a rotational speed of feeder bowl 102. In a still further embodiment of the invention, feeder bowl rotation drive 108 may rotate dispensing paths 103 in a direction of rotation that is opposite to a direction of rotation of feeder bowl 102. In each embodiment, feeder bowl rotation drive 108 may rotate dispensing paths 103 at a rotational speed that 2o corresponds to a desired rate of filling containers at rotary, vibratory dispenser 100.
[0054] , Feeder bowl vibration device 109 may vibrate feeder bowl 102 at different vibrational settings, e.Q., at different vibrational magnitudes, at different vibrational frequencies, in different vibrational planes, or combinations thereof. Feeder bowl vibration device may vibrate feeder bowl at different vibrational settings in a first plane, a second plane, or both, so 25 that feeder bowl 102 may supply items uniformly to each of the dispensing paths 103 positioned around feeder bowl 102. First plane may be generally vertical, while second plane may be generally horizontal, or first plane may be transverse to second plane. Such feeder bowl vibration devices 109 may include Syntron~ Electromagnetic Vibrators, available from FMC
Technologies Material Handling Solutions of Homer City, Pennsylvania.
Attorney Docket No. 016354.0206 [0044] : According to a still further embodiment of the present invention, each sensing unit 117 may include a pair of sensing units. For example sensing unit 117 may inchtde a scale and an electromagnetic sensor for measuring a weight and a volume, respectively, of each iiispensed item. Sensing unit 117 may include an optical or proximity sensor and a scale for counting and measuring a weight, respectively, of each dispensed item. Thus, such a dual sensing unit may further improve the accuracy of a count, or a measurement, or both of each dispensed item.
:,[0045] A dispensing head 105 may be positioned at each dispensing path 103, adjacent to a distal end of each dispensing path 103, to receive items dispensed from each ;vdispensing path 103 and its associated item-dispensing channel. In embodiments of the invention in which a dispensing path 102 may include more than one item-dispensing channel, a dispensing head 105 may be positioned adjacent to each channel, ~ adjacent to a distal end of each channel of a dispensing path 102, to receive items dispensed from each channel.
[0046] Dispensing head 105 may include a bifurcation device 106 for directing received .
.15 items to a first chamber 106a or a second chamber 106b of each dispensing head 105. Moreover, each dispensing head 105 may include a holding chamber 107. Holding chamber 107 may be positioned at a lower portion of each dispensing head 105. Holding chamber, 107 may be selectively reconfigured to direct items within dispensing head 105 in a first direction, e.g., toward a container. or the like, or to divert items in a second direction, ~
away from a container or_ the like. In one embodiment of the present invention, holding chamber 107 may include a pair of doors 107x, 107b, as shown in Fig. 1.
[0047] Referring to Figs. 6a-6h, in a modification of this embodiment of the present invention, holding chamber 107 may be replaced by a first holding charriber 107' and a second holding chamber 107", door 107a~may be replaced by a first door 107a', and door 107b may be replaced by a guide wall 107b' and a second door 107b". First holding chamber 107' may be positioned below second holding chamber 107", and when second door 107b" is in a closed position, holding chambers 107' and 107" may form a continuous chamber.
Nevertheless, when second door 107b" is in an open position, second door 107b" may prevent the items from reaching first holding chamber 107'. Specifically, bifurcation device 106 may receive the items 3o which pass through the opening in dispensing head 117, such that the items are positioned within PATENT
Attorney Docket No. 016354.0206 first chamber 106a or second chamber 106b. When bifurcation device 106 receives a predetermined number of items which have acceptable physical characteristics, e~, physical characteristics which are within a predetermined range of physical characteristics, bifizrcation device 106 may direct the received items into first holding chamber 107' via second holding chamber 107". First door 107x' then may move from'a closed positioned to an open position, such that the items received by first holding chamber 107' are directed toward the container.
Nevertheless, if bifurcation device 106 receives any item which does not have acceptable ~.chazacteristics, e~Q., physical characteristics which are greater than or less than the predetermined range of physical characteristics, second door 107b" may move from the closed position to the io open position, and bifiircation device 106 subsequently may direct the received items into second holding chamber 107". When bifurcation device 106 directs the received items into second holding chamber 107 "; bifurcation device 106 may receive new items, such that the new items inay be. positioned within first chamber 106a or second chamber 106b.
Moreover, when the received items reach second holding chamber 107", second door 107b" may direct the received items away from the container. Consequently, when bifizrcation device 106 receives an unacceptable item, each of the items received by the bifurcation device 106 may be diiected away from the container without having to wait for bifiucation device 106 to receive the predetermined number of items. Moreover, the new items may be received by bifurcation device 106 without having to wait for second door 107b" to direct the received items away from the 2o container.
[0048) Referring to Flgs. 13a and 13b, in another modification of the embodiment of the present invention depicted in Wig. l, bifurcation device 106 may be replaced by a first directional gate 106' and a second directional gate 106 ", and holding chamber 107 may be replaced by a first holding chamber 1107a and a second holding chamber 1107b. In this embodiment, door 107a may be replaced by an accept door 107a", door 107b may be replaced by a recirculate door 107b", and dispensing head 105 may comprise means for releasing items from second holding chamber 1107b. For example, the means for releasing may comprise a roller 810 connected to recirculate door 107b". Moreover, dispenser 100 may comprise means for separating items, ~, a first strainer (not shown) and/or a second strainer (not shown).
Specifically, the first strainer may be operationally positioned between bulk delivery apparatus 104 and dispensing PATENT
Attorney Docket No. 016354.0206 head 105, such that the first strainer may prevent items having a diameter which is greater than a first predetermined diameter from entering dispensing head 105. The second strainer may be operationally positioned between second holding chamber 1107b and bulk delivery apparatus 104, such that the second strainer prevents items which are released from second holding chamber 1107b and have a diameter which is less than a second predetermined diameter from reentering dispensing head 105.
[0049] In operation, first directional gate 106' may receive the items which pass through the first strainer and an opening (not numbered) in dispensing head 105, such that the items are -positioned within first chamber 106a or second chamber 106b. When first directional gate 106' receives a predetermined number of items which passed through at least the first strainer and have acceptable physical characteristics, e.~., physical characteristics which are within a predetermined range of physical characteristics, second directional gate 106"
is positioned in a first position and first directional gate 106' may direct the received items into first holding chamber 1107a. The container then may move to a position which is substantially, vertically aligned with first holding chamber 1107a, and accept door 107a" then may move from a closed positioned to an open position, such that the items received by fi=st holding chamber 1107a are directed toward bulk delivery apparatus 104 and into the container. When first directional gate 106' directs the received items into first holding chamber 1107a, first directional gate 106' may receive new items, such that the new items may be positioned within first chamber 106a or second chamber 106b.
[0050] Nevertheless, if first directional gate 106' receives any item which does not have acceptable characteristics, ~ physical characteristics which are greater than or less than the predetermined range of physical characteristics, second directional gate 106"
may move from the first position to a second position, and first directional gate 106' subsequently may direct the received items into second holding chamber 1107b. When first directional gate 106' directs the received items into second holding chamber 1107b, first directional gate 106' may receive new items, such that the new items may be positioned within first chamber 106a or second chamber 106b. Moreover, dispensing head 105 may orbit around bulk delivery apparatus 104, and the means for releasing may further comprise means for altering an angle of roller 810, such that . when the angle of roller 810 is altered, recirculate door 107b" opens. For example, the means PATENT
Attorney Docket No. 0163$4.0206 far altering the angle of roller 810 may comprise a raised portion (not shown). When roller 810 contacts the raised portion, roller 810 may move in an upward direction, and rec~irculate door I07b" automatically opens, such that the items in second holding chamber 1107b are directed away from bulk delivery apparatus 104 and onto a conveyer (not shown). The second strainer j then separates the items on the conveyer having a diameter less than the second predeteriiiined diameter from the items on the conveyer having a diameter greater than or equal to the second predetermined diameter. Moreover, the items on the conveyer having a diameter greater than or equal to the second predetermined diameter are delivered to bulk delivery apparatus 104.
Consequently,.when a batch of items is unacceptable because one of the items in the batch does .not have acceptable characteristics, those items in the batch which have acceptable characteristics may be redelivered to dispensing; head 105 via bulk delivery apparatus 104, such that the number of acceptable items which dispenser 100 disposes of may be reduced. Moreover, bvcaltse the items which are not dispensed into containers are directed away from bulk delivery apparatus 104, these items may not adversely affect the components of dispenser 100. For example, the food items may not contact or adhere to the components of dispenser 100. Further, because the items which are not dispensed into containers are directed away from bulk delivery apparatus 104, the need to clean dispenser 100 may occur less frequently, and dispenser 100 more easily may be cleaned.
[0051] Referring again to Fig. l, in another embodiment of the present invention, holding 2o chamber 107 may include two pairs of doors for directing items to a container or for diverting items away from a container. Based on a measurement and count of each dispensed item by sensing units 117, each dispensing head 105 may be activated to direct predetermined quantities of items, each of whose measured physical characteristics is within a predetermined range, of measurements, to a container or the like. Moreover, based on measured values of each dispensed item, dispensing heads 105 may direct predetermined volumes, weights, or the like, to a container. Dispensing heads 105 may be activated to divert dispensed items whose measured physical characteristic is greater than or less than a predetermined range of measurements away from a container or the like.
[0052] Feeder bowl rotation drive 108 may rotate feeder bowl 102 at different rotational 3o speeds. Moreover, feeder bowl rotation drive 108 may rotate feeder bowl 102 and dispensing PATENT
Attorney Docket No. 016354.0206 paths 103 at a rotational speed that corresponds to a desired rate of filling containers at rotary, vibratory dispenser 100. For example, feeder bowl rotation drive 108 may rotate a frame that supports feeder bowl 102 and dispensing paths 103, as shown in Fig. 1. If rotary, vibratory iiispenser 100 includes 48 dispensing paths 103 and each dispensing path 103 includes twb iteni~
S ~ dispensing channels, and rotary, vibratory dispenser 100 must fill 480 containers per minute, feeder bowl rotation drive 103 may rotate feeder bowl 101 and dispensing paths 103 at five (5) revolutions per minute (rpm), so that rotary, vibratory dispenser may dispense items to 480 containers per minute: If each dispensing path 103 include a single item-dispensing channel, . feeder bowl rotation drive 108 may rotate feeder bowl 102 and dispensing paths 1:03 at ten (10) ib ten rpm, so that rotary, vibratory dispenser 100 may dispense items to 480 containers per minute.
[0053] According to an embodiment of the invention in which dispensing paths 103 may rotate independently of feeder bowl 102, feeder bowl rotation drive 108 may rotate dispensing paths 103 at a substantially similar rotational speed as feeder bowl 102, or feeder:bowl rotation drive 108 may rotate dispensing paths 103 at a different rotational speed than feeder bowl 102, 15 e.g_, via a transmission (not shown), so that a rotational speed of dispensing paths 103 may be ' varied relative to a rotational speed of feeder bowl 102. In a still further embodiment of the invention, feeder bowl rotation drive 108 may rotate dispensing paths 103 in a direction of rotation that is opposite to a direction of rotation of feeder bowl 102. In each embodiment, feeder bowl rotation drive 108 may rotate dispensing paths 103 at a rotational speed that 2o corresponds to a desired rate of filling containers at rotary, vibratory dispenser 100.
[0054] , Feeder bowl vibration device 109 may vibrate feeder bowl 102 at different vibrational settings, e.Q., at different vibrational magnitudes, at different vibrational frequencies, in different vibrational planes, or combinations thereof. Feeder bowl vibration device may vibrate feeder bowl at different vibrational settings in a first plane, a second plane, or both, so 25 that feeder bowl 102 may supply items uniformly to each of the dispensing paths 103 positioned around feeder bowl 102. First plane may be generally vertical, while second plane may be generally horizontal, or first plane may be transverse to second plane. Such feeder bowl vibration devices 109 may include Syntron~ Electromagnetic Vibrators, available from FMC
Technologies Material Handling Solutions of Homer City, Pennsylvania.
PATENT
Attorney Docket No. 016354.0206 [0055] By selectively vibrating feeder bowl 102 at different vibrational settings, feeder bowl vibration device 109 enables feeder bowl 102 to receive a plurality of items, ~ from a bulk delivery apparatus 104, and to supply those items uniformly to each of the dispensing paths . ~ 103 positioned around feeder bowl 102. Moreover, feeder bowl vibration device 109 may vibrate feeder bowl 102 at different vibrational settings that are proportionate to a physical characteristic of each item, ~ a weight, a density, a volume, a temperature, or the like of each item. Depending upon a physical characteristic of each item, ~ a weight, a density, a volume, ~a temperature, or the like, a rate at which items are delivered to feeder bowl 102, and a desired date of supplying items from feeder bowl 102 to dispensing paths 103; feeder bowl vibration IO device 109 vibrates feeder bowl 102 at different vibrational settings, so that feeder bowl 102 may supply items uniformly to each dispensing path 103.
[0056] One or more dispensing path vibration devices 110 may vibrate each dispensing path 103, e.Q., each channel of each dispensing path 103. Dispensing path vibration devices 110 may vibrate each dispensing path 103 and channel at different vibrational settings; ~ at 15 different vibrational magnitudes, at different vibrational frequencies, in different vibrational planes, or combinations thereof. Each dispensing path vibration device 110 may vibrate one or more dispensing paths 103 and associated item-dispensing channels at different vibrational ettings in a first plane or a second plane or both. First and second plane may be a generally horizontal and a generally vertical plane, respectively, or first and second planes may be 2o transverse to one another. Such dispensing. path vibration devices 110 may include Syntron~
Solid Mount Linear Drives, which are available from FMC Technologies Material Handling Solutions of Homer City, Pennsylvania.
[0057] By vibrating each dispensing path 103 at different vibrational settings, dispensing path vibration devices 110 enable each dispensing path 103 to receive a plurality of items 25 supplied from feeder bowl 102, to singulate items, ~ to position items in single file along a longitudinal axis of each dispensing path 103, and to dispense the items singularly from each dispensing path 103. Moreover, dispensing path vibration devices 110 may vibrate each dispensing path 103, according to a physical characteristic, e.~., a weight, a density, a volume, a temperature, or the like of each item, so that each dispensing path 103 dispenses items singularly, 3o era., in single file, in a spaced relation, or the like. Depending upon a physical characteristic of _17_ PATENT
Attorney Docket No. 016354.0206 each item, e.g_, a weight, a density, a volume, a temperature, or the like, a rate at which items are supplied by feeder bowl 102 to dispensing paths 103, and a desired rate of dispensing items from each dispensing path 103, dispensing path vibration devices 110 may vibrate each dispensing path 103 at vibrational settings, so that each dispensing path 103 may dispense items singularly.
w5 [0058] A separate dispensing path vibration unit 110 may vibrate each dispensing path 103 and associated channels) independently of every other dispensing path 103, ~ at different vibrational settings, and independently of a vibration of feeder bowl 102 by feeder bowl vibration device 109. Iii another embodiment of the invention, each dispensing path vibration ~riit 110 may vibrate two or more dispensing paths 103 and associated channels at similar 1o vibrational settings. If each dispensing path 103 includes two or more item-dispensing channels, a dispensing path vibration unit 110 may vibrate two or more channels of a respective di~pe>isiiig path 103 at a similar vibrational setting, or dispensing path vibration device 110 may vibrate each channel of a dispensing path 103, ~ one, two, three, four, or more channels of a respective dispensing path 103 at a similar vibrational settings, ~ in of along similar 15 vibrational axes, at similar vibrational magnitude, at similar vibrational frequencies, or coriibinations thereof. Moreover, dispensing path vibration devices 110 may vibrate each dispensing path 103 independently of other dispensing paths 103, so that each dispensing path 103 may receive items supplied by feeder bowl 102 and dispensing items singularly.
[0059] Fig. 3 shows a control system according to the present invention for use with a 20 rotary, vibratory dispenser. The control system may include a processor 111, a memory (not shown), and an input device 112. Processor 111 may be a microprocessor, a general purpose piogram logic control (PLC), or the like. Memory may be separate from processor 111, or rrieinory may be included with processor 111, or both. Input device 112 may include a keyboard, a touch screen interface, a wireless I/O communication port, or the like.
Processor 111 may be 25 positioned on rotary, vibratory dispenser 100, e.Q., on a frame ofrotary, vibratory dispenser 100.
[0060] A plurality of rotational and vibrational settings for each of feeder bowl rotation drive 108, feeder bowl vibration device 109, dispensing path vibration device 110, and may be stored in the control system. For example, memory may store one or more rotational speed settings for feeder bowl rotation drive 108. Feeder bowl 102 rotational speed settings may 3o correspond to a desired rate of filling containers at rotary, vibratory dispenser 100, a desired rate PATENT
Attorney Docket No. 016354.0206 of delivery of items from bulk delivery apparatus 104 to feeder bowl 102, or to a desired rate of dispensing items from dispensing paths 103. In embodiments of the invention in which feeder bowl rotation drive 108 rotates dispensing paths 103, memory may store one or more rotational speed settings for dispensing paths 103. The rotational speed settings may correspond to a desired rate of filling containers at rotary, vibratory dispenser 100.
[0061] Vibrational settings for feeder bowl vibration device 109 may be stored in memory. Each vibrational setting may include a magnitude of vibration, a frequency of vibration, or both, in a first plane, in a second plane, or both. Each vibrational setting may correspond to a rate at which bulk delivery apparatus 104 delivers items to rotary, vibratory to ' dispenser 100, a rate of supplying items from feeder bowl 102 to dispensing paths 103, or both.
Each vibrational setting may be proportionate to a physical characteristic, ,e.~., a volume, a density, a temperature, a weight, or the like, of items to be dispensed.
[0062] Vibrational settings for dispensing path vibration devices 1109 may be stored in memory. Each vibrational setting may include a magnitude of vibration, a frequency of vibration, or both, in a first plane, in a second plane, or both. Each vibrational setting may correspond to a rate at which feeder bowl 102 supplies items to dispensing paths 103, a desired rate of dispensing items from each dispensing path 103, or both: Each vibrational setting may be proportionate to a physical characteristic, e.~., a volu~ne,.a density, a temperature, a weight, or the like, of items to be dispensed.
[0063] Vibrational settings for may be stored in memory. Each vibrational setting may include a magnitude of vibration, a frequency of vibration, or both, in a first plane, in a second plane, or both. Each vibrational setting may correspond to a rate at which bulk delivery apparatus 104 delivers items to feeder bowl 102, a desired rate of dispensing items from each dispensing path 103, or both. Each vibradonal setting may be proportionate to a physical characteristic, ~ a volume, a density, a temperature, a weight, or the like, of items to be delivered by Bulk delivery apparatus 104.
[0064] A predetermined range of one or more physical characteristics of each item to be dispensed may be stored in memory. For example, a predetermined range of weights, densities, or volumes may be stored for a particular item. Processor 111 may use a parkicular predetermined range of one or more physical characteristics of an item to identify each dispensed ' PATEIV'T
Attorney Docket No. 016354.0206 item the measured value of which is within a predetemlined range and to identify each dispensed items the measured value of which is greater than or less than the predetermined range for that item. For example, each sensing unit 117 may measure a volume of each item dispensed from a dispensing path 103 or item-dispensing channel and h~ansmit each measurement to control unit.
~ Control unit may compare each measurement to a predetermined range of volumes for that particular item to determine whether the measured volume of each item is within the predetermined range of volumes for that particular item, or whether the measured volume for an item is greater than or less than the predetermined range of volumes for the item.
[0065] By receiving a measurement of a physical characteristic of a 'dispensed iterii from tb sensing unit 117 and comparing each measurement with a predetermined range for that physical characteristic, processor 111 may identify each item the measured physical characteristic of which is within specification, i-e., within a predetermined range for that item. This identificatiow enables processor 111 to control dispensing of items, ~ via control of dispensing heads 105, so that each dispensing head 105 may direct predetermined quantities of items, the measured physical characteristic: of each. of which is within a predeternzined range for that item, to a container. Moreover, processor 111 may control dispensing heads 105, so that each dispensing head 105 may divert items the measured value of which is greater than or less than a predetermined range for that item away from a container. Comparison of a measurement of a physical characteristic of a dispensed item to a predetermined range for that physical . characteristic enables processor 111 to determine whether each dispensing path 103 is dispensing items singularly.
[0066] Processor 111 may receive instructions from one or more input devices 112.
Input device 112 may enable remote control of, and communication with, processor 111. Input device 112 may enable selection of one or more operational settings of rotary, vibratory dispenser 100, ~ selection of a rotational speed of feeder bowl rotation drive 108, selection of a vibrational magnitude and frequency in one or more planes of feeder bowl vibration device 109 ..or dispensing path vibration device 110, so that rotary, vibratory dispenser 100 may be operated at a variety of operational settings.
{0067] Each operational setting may be stored in a memory of control system and selected via input device 112. For example, input device 112 may enable selection of a PATENT
Attorney Docket Na. 016354.0206 rotational speed of feeder bowl 102, a rotational speed ~of dispensing paths 103, a vibrational magnitude and frequency_of feeder bowl 102 in one ~or more planes, a vibrational magnitude and fi~equency of one or more dispensing paths 103 in one of more planes, or the like. Selection of these operational settings via input device 112 enables processor 111 to control a rotational speed of feeder bowl rotation drive 108, a vibrational magnitude and frequency of feeder bowl vibration device 109, one or more vibrational magnitudes or frequencies of dispensing path vibration devices 110, a drive setting for , or the like. 'Input device 112 may enable entry of various operational settings in addition to selection of operational settings stored in memory.
Input device 112 may enable modification of stored operational settings, as well. Input device lti 112 also enables selection of a desired dispensing rate, a desired fill rate for containers, or the like.
[0068] Referring to Fig. 3, . processor 111 may communicate with feeder bowl rotation drive 108, feeder bowl vibration device 109, dispensing path vibration devices 110, and , via various communication means, ~ hard wire, wireless transmission, or the like, or . a combination of these communication means, so that processor 111 may control operation of rotary, vibratory dispenser 100. Moreover, processor 111 may communicate with a feeder bowl rotation sensor 114, a feeder bowl vibration sensor 115, dispensing path vibration sensors 116, sensing units 117 and a bulk delivery sensor 104b that detects, _eg, weighs, counts, or the like, items delivered from bulk delivery apparatus 104 to rotary, vibratory dispenser 100.
[0069] Feeder bowl rotation sensor 114 detects; ~ measures, a rotational speed of feeder bowl 102. Rotation sensor 114 may detect a rotational speed of feeder bowl 102 directly, eTi~., by being positioned adjacent to feeder bowl 102 to sense a rotation of feeder bowl 102, or indirectly, e.~., by being positioned at rotation drive 8 to detect a rotational speed of rotation drive 8. Rotation sensor 114 transmits signals corresponding to a rotational speed of feeder bowl 102 or a rotational speed of feeder bowl rotation drive 108, or both, to processor 111.
[0070] Feeder bowl vibration sensor 115 detects, e.~., measures, a vibration of feeder bowl 102. Feeder bowl vibration. sensor 115 may detect a frequency of vibration of feeder bowl 102, a magnitude of vibration of feeder bowl 102, or both. Moreover, feeder bowl vibration sensor 115 may detect the frequency of vibration of feeder bowl 102, the magnitude of vibration of feeder bowl 102, or both, in a first plane, a second plane, or both. Feeder bowl vibration PATENT
Attorney Docket No. 016354.0206 sensor 11 S may be positioned in direct contact with feeder bowl 102 to measure a vibration of feeder bowl 102. Feeder bowl vibration sensor 115 may be positioned at feeder bowl vibration device 109 for measuring a vibration of feeder bowl vibration device 109. For example, feeder bowl vibration sensor 115 may transmit signals corresponding to one or more of a frequency of vibration, a magnitude of vibration, and a direction or plane of vibration of feeder bowl 1 U2, or feeder bowl vibration device 109, or both to processor 111.
[0071] Dispensing path vibration sensors 116 may detect, ~ measure, one or more of a ;'frequency of vibration of each dispensing path 103, a magnitude of vibration of each dispensing path 103, or a direction of vibration of each dispensing path 103. Moreover, each dispensing to path vibration sensor lI6 may detect a frequency of vibration of dispensing paths 103, a magnitude of vibration of dispensing paths 103, or both, in a first plane, a second plane, or both.
Each dispensing path vibration sensor 116 may detect a vibration of one or more dispensing paths.103. Dispensing path vibration sensors 116 may measure a vibration of each dispensing path 103 directly, ~ by being positioned at a dispensing path 103. Dispensing path vibration sensors 116 may measure a vibration of each dispensing path 103 indirectly;
e.~, by being positioned at a dispensing path vibration device 110 to measure a vibration of each dispensing path vibration device 110.
[0072) If a dispensing path 103 includes two or more item-dispensing channels, a dispensing path vibration sensor 116 may measure a vibration of each item-dispensing channel 2o directly, indirectly, or both. If each dispensing path vibration device 110 vibrates multiple channels, dispensing path vibration sensors 116 may measure a vibration of each individual channel or a vibration of the multiple channels vibrated by a respective dispensing path vibration device 110. Each dispensing path vibration sensor 116 transmits signals corresponding to measured vibrations of one or more dispensing paths 103, dispensing path vibration devices 110, or both, to processor 111. Moreover, dispensing path vibration sensors 116 may transmit signals corresponding to one or more of a frequency of vibration, a magnitude of vibration, and a direction of vibration of one or more channels of each dispensing path 103 to processor 111.
[0073] Sensing units 117 may measure a physical characteristic, e.~.. a weight, a volume, a density, or the like, of each dispensed item and transmit signals corresponding to the 3o measurements of each dispensed item to processor 111. Sensing units 117 may be positioned at PATENT
Attorney Docket No. 016354.0206 each dispensing path 103, ,e.~., adjacent to a distal end of each dispensing path to measure items dispensed from each dispensing path 103. In an embodiment of the present invention, sensing units 117 may be positioned at a dispensing head 105, ~ at an opening of a dispensing head .105, as shown in Wig. 1, to measure items received by dispensing head 105.
Sensing units 117 inay be positioned at a distal end of each item-dispensing channel of each dispensing path 103.
[0074] Sensing units 117 may include inductive sensors, capacitative sensors, photoelectric sensors, optical sensors, electromagnetic radiation sensors, proximity switches, or the like for riieasuring one or more physical characteristic of each dispensed item. For example, an electromagnetic radiation sensor or an optic sensor, such as those available from Batching to systems, Inc., Prince Frederick, Maryland, may measure a volume of each dispensed item by directing electromagnetic radiation from a source of electromagnetic radiation onto a detector and calculating a volume of each item passing between the electromagnetic source and detector based on a change in the amount of electromagnetic radiation detected by the detector as each item passes between the electromagnetic source and the detector. Such sensing units 11'7 are is disclosed, e.Q., in U.S. Patent No. 5,454,016 to Holmes and U.S. Patent No.
5,313,508 to Ditman et al., the contents of both patents are incorporated herein by reference in their entirety.
[0075) . Sensing units 117 may include a scale, ~ a strain gauge, for measuring a weight of each singularly dispensed item. Further, sensing units 117 may include an optic sensor or scanning unit for measuring a volume of each singularly-dispensed item.
Sensing units 117 may 20 include a proximity such for detecting each singularly dispensed to provide a count of each dispensed item.
[0076] According to another embodiment of the invention, a pair of sensing units 117 rriay be positioned at each dispensing path 103 or item-dispensing channel.
Each pair of sensing units 117 may measure two physical characteristics of each dispensed item. For example, a pair 25 of sensing units 117 may measure a weight and a volume of a each dispensed item, so that processor 111 may calculate a density of each dispensed item. ~ Thus, this dual sensing unit may further improve an accuracy of a count, or a measurement, or both of each dispensed item.
[0077] Processor 111 also may control operation of bulk delivery apparatus 104. For example, processor 111 may communicate with a bulk delivery sensing unit 18, ~
a scale, or 3o the like, and a bulk delivery drive sensor 19, e,T~., a sensor positioned at a bulk delivery drive PATENT
Attorney Docket No. 016354.0206 104a of bulk delivery apparatus 104. Bulk delivery sensing unit 18 may transmit signals corresponding to a physical characteristic, e.g., a weight, a volume, a count, or the like, of items contained within bulk delivery apparatus or items delivered from bulk delivery apparatus 104, or both, so that processor 111 may calculate a quantity of items delivered by bulk delivery apparatus 104 to rotary, vibratory dispenser. Moreover, bulk delivery drive sensor 19 may transmit signals corresponding to a vibration, a rotational speed, or the like of bulk delivery drive 104a, so that processor 111 may control a rate at which bulk delivery apparatus 104 delivers items to rotary, vibratory feeder, e.~., to feeder bowl 102 of rotary, vibratory dispenser.
Processor 111 may receive an input of one or more settings of bulk delivery drive 104a, so that 1'0 processor I l I may control delivery of items from bulk delivery apparatus 104 to feeder bowl 102 to correspond to a desired or expected rate of dispensing items from rotary, vibratory dispenser.
[0078] With reference to Fig. 5, a control program, ~ a control routine, is disclosed.
Processor 111 receives input, ,e.~., via input device 112, regarding one or more operational settings of rotary, vibratory dispenser (step S1). In one embodiment of the invention, the settings may be preset and stored in a memory of processor 111, so that one or more settings may be selected by input device 112. Alternatively, settings for one or more of feeder bowl rotation drive 108; feeder bowl vibration device 109, dispensing path vibration, device 110, bulk delivery drive 104a may be entered into processor 111, via input device 112.
2o [0079] Feeder bowl rotational drive settings (step S8) may correspond to a desired or expected fill rate of containers to be received and filled at rotary, vibratory dispenser. Feeder bowl vibrational settings (step S9) may be dictated or driven by a physical characteristic of items to be dispensed, a rotational speed of feeder bowl 102, a rate of delivery of items from bulk delivery device 4, or a desired rate of supplying items from feeder bowl 102 to, each dispensing path 103.
[0080) Dispensing path vibrational settings (step S3) may be dictated or driven by a physical characteristic of items to be dispensed or to a desired dispensing rate of items. In response to the input settings, processor 111 may control operation of feeder bowl rotation drive 108, feeder bowl vibration device 109, dispersing path vibration device 110, and bulk delivery d".~ i PATENT
Attorney Docket No. 016354.0206 drive 104a (not shown), so that rotary, vibratory dispenser receives a plurality of items and dispenses the items singularly from each dispensing path 103.
[0081] Moreover, processor 111 may continuously monitor and regulate, e.~., via a control routine, feed back loop, or the like (not shown), feeder bowl rotation drive 108, feeder bowl vibration device 109, and dispensing path vibration devices 110, in response to signals received from feeder bowl rotation sensor 114, feeder bowl vibration sensor 115, and dispensing path vibration sensor 116, so that feeder bowl rotation drive 108, feeder bowl vibration device :'109, and dispensing path vibration devices 110 operate at desired operational settings.
[0082] Sensing units 117 measure a physical characteristic of each item dispensed fi'om : v each dispensing path 103 or item-dispensing channel and transmit signals corresponding to each measurement to processor 111 (step SS). Based on these received signals, processor 111 determines, for each dispensing path 103, whether items are being dispensed singularly (step S6).
Tf processor. l l l determines that items are being dispensed singularly from each dispensing path 103, processor 111 next determines whether items niay be dispensed singularly at an increased ' rate (step S7).
[0083] If processor 111 determines that items may be dispensed singularly at an increased rate, processor 111 adjusts one or more of bulk delivery drive 104a (step S10), feeder bowl vibration device 109 (step S9), or dispensing path vibration devices 110 (step S8), so that items may be dispensed singularly at an increased rate. Processor 111 then receives signals from 20~ : sensing units 117 corresponding to each item or items dispensed from each dispensing path 103 (step SS) and determines whether items are being dispensed singularly from each dispensing path 103 at the increased dispensing rate.
[0084] If processor 111 determines that items are not being dispensed singularly, ~ if processor 111 receives measurements from sensing unit 117 indicating that items are being dispensed in pairs or in an overlapped relationship from one or more dispensing paths 103 (step S6), processor 111 may adjust one or more of bulk delivery drive 104a (step S13), feeder bowl vibration device 109 (step S 12), or dispensing path vibration devices 110 (step S 11), so that items may be dispensed singularly from each dispensing path 103. For example, processor 111 may adjust bulk delivery drive 104a (step S 13) to reduce the rate at which items are delivered to 3o feeder bowl 102. Alternatively or additionally, processor 111 may adjust feeder bowl vibration PATENT
Attorney Docket No. 416354.0206 device 109 (step S 12), or one of more dispensing path vibration devices 110 (step S 11 ), so that items may be delivered uniformly from feeder bowl 102 to dispensing paths 103 and so that each dispensing path 103 may dispense items singularly.
[0085] In response to measurements received from sensing units 117, processor 111 may continue to adjust one or morev of bulk delivery drive 104a (step S 13), feeder bowl vibration device 109 (step S 12), or dispensing path vibration devices 110 (step S 11), as necessary, until iteiris are dispensed singularly from each dispensing path 103. Moreover, processor 111 may 'adjust a frequency of vibration, . a magnitude of vibration, or both, in a first direction, a second direction, or both, of feeder bowl vibration device (step S 12), dispensing path vibration devices 1I0 (step 511), and bulk delivery drive 104a (step S13) (if applicable), so that dispensing paths 103 dispense items singularly, ~ in response to signals received from sensing units 117. Once processor 111 determines that items are dispensed singularly from each dispensing path 103, processor 111 continues to monitors operation of rotary, vibratory dispenser (step 514).
[0086] Processor 111 also counts each item dispensed from each dispensing path 103, so that predetermined quantities ofitems may be directed to containers or packages. For example, processor 111 may. count each°. item dispensed from a dispensing path 103 or channel to a respective dispensing 'head 105 and activate each respective dispensing head 105 to direct predetermined quantities of items, the measured physical characteristic of each of which items is within a predetermined range. of physical characteristics, to a container or package.
fo [0087] Processor 111 may activate a dispensing head 105 to divert quantities of items in which at least one item has a measured physical characteristic that is greater than or less than a predetermined range of physical characteristics, so that containers or packages are not filled with defective items, ~ items whose weight, volume, shape is not within a predetermined range of measurements. Alternatively, processor l l l may increment a count of a predetermined quantity 25 of items for each item the measured physical characteristic of which is greater than or less than a predetermined range of physical characteristics, so that dispensing heads 105 dispense at least a predetermined quantity of items, each with a measured physical characteristic that is within a predetermined range of physical .characteristics.
{0088] In a further embodiment of the present invention, processor 111 may define a 3o predetermined range of physical characteristics for one or more physical characteristics of an PATENT
Attorney Docket No. 016354.0206 item to be dispensed liy rotary, vibratory dispenser 100. For example, processor 111 may operate rotary, vibratory dispenser 100 to dispense items singularly from each dispensing path 103 and measure a physical characteristic of each singularly dispensed item.
Processor 111 may then establish a predetermined range of physical characteristics of one or more physical . 5 characteristics of each dispensed item based on the measure values of each item transmitted to processor 111 from sensing units 117. Moreover, processor 111 may store define predetermined range in a memory for future use.
- [0089) Referring to I~g. 7, a dispenser 100' for use with the control system of the present invention is depicted. The features and advantages of dispenser 100' are substantially siinilat~ to the features and advantages of dispenser 100. Therefore, the similar features and advantages of dispenser 100 and dispenser 100' are not discussed further with respect to dispenser 100'.
l5ispenser 100' may comprise feeder bowl 102, dispensing paths '103 positioned. around feeder bov~rl 102, a dispensing path rotation drive 108' for rotating dispensing paths 103, feeder bowl vibration device 109, and the one or more dispensing path vibration devices 110 for vibrating i5 each dispensing path 103. In this embodiment of the present invention, feeder bowl vibration device 109 may vibrate feeder bowl 102, the one or more dispensing path vibration devices 110 may vibrate dispensing paths 103, and dispensing path rotation drive 108' may rotate dispensing piths 103 around feeder bowl 102. For example, an edge of dispensing paths 103 may be . positioned below and may overlap a portion of feeder bowl 102, such that at least one vertical 2o plane includes both dispensing paths 103 and feeder bowl 102. Moreover, in this embodiment of the present invention, feeder bowl 102 does not rotate. Consequently, a lighter motor may be used, there are fewer moving parts is dispenser 100', and dispenser 100' may have increased control.
[0090) While the invention has been described in connection with preferred 25 eriibodiments, it will be understood by those of ordinary skill in the art that other variations and modifications of the preferred embodiments described above may be made without departing from the scope of the invention. Moreover, other embodiments of the present invention will be apparent to those of ordinary skill in the art from a consideration of the specification or a practice of the invention disclosed herein, or both.
Attorney Docket No. 016354.0206 [0055] By selectively vibrating feeder bowl 102 at different vibrational settings, feeder bowl vibration device 109 enables feeder bowl 102 to receive a plurality of items, ~ from a bulk delivery apparatus 104, and to supply those items uniformly to each of the dispensing paths . ~ 103 positioned around feeder bowl 102. Moreover, feeder bowl vibration device 109 may vibrate feeder bowl 102 at different vibrational settings that are proportionate to a physical characteristic of each item, ~ a weight, a density, a volume, a temperature, or the like of each item. Depending upon a physical characteristic of each item, ~ a weight, a density, a volume, ~a temperature, or the like, a rate at which items are delivered to feeder bowl 102, and a desired date of supplying items from feeder bowl 102 to dispensing paths 103; feeder bowl vibration IO device 109 vibrates feeder bowl 102 at different vibrational settings, so that feeder bowl 102 may supply items uniformly to each dispensing path 103.
[0056] One or more dispensing path vibration devices 110 may vibrate each dispensing path 103, e.Q., each channel of each dispensing path 103. Dispensing path vibration devices 110 may vibrate each dispensing path 103 and channel at different vibrational settings; ~ at 15 different vibrational magnitudes, at different vibrational frequencies, in different vibrational planes, or combinations thereof. Each dispensing path vibration device 110 may vibrate one or more dispensing paths 103 and associated item-dispensing channels at different vibrational ettings in a first plane or a second plane or both. First and second plane may be a generally horizontal and a generally vertical plane, respectively, or first and second planes may be 2o transverse to one another. Such dispensing. path vibration devices 110 may include Syntron~
Solid Mount Linear Drives, which are available from FMC Technologies Material Handling Solutions of Homer City, Pennsylvania.
[0057] By vibrating each dispensing path 103 at different vibrational settings, dispensing path vibration devices 110 enable each dispensing path 103 to receive a plurality of items 25 supplied from feeder bowl 102, to singulate items, ~ to position items in single file along a longitudinal axis of each dispensing path 103, and to dispense the items singularly from each dispensing path 103. Moreover, dispensing path vibration devices 110 may vibrate each dispensing path 103, according to a physical characteristic, e.~., a weight, a density, a volume, a temperature, or the like of each item, so that each dispensing path 103 dispenses items singularly, 3o era., in single file, in a spaced relation, or the like. Depending upon a physical characteristic of _17_ PATENT
Attorney Docket No. 016354.0206 each item, e.g_, a weight, a density, a volume, a temperature, or the like, a rate at which items are supplied by feeder bowl 102 to dispensing paths 103, and a desired rate of dispensing items from each dispensing path 103, dispensing path vibration devices 110 may vibrate each dispensing path 103 at vibrational settings, so that each dispensing path 103 may dispense items singularly.
w5 [0058] A separate dispensing path vibration unit 110 may vibrate each dispensing path 103 and associated channels) independently of every other dispensing path 103, ~ at different vibrational settings, and independently of a vibration of feeder bowl 102 by feeder bowl vibration device 109. Iii another embodiment of the invention, each dispensing path vibration ~riit 110 may vibrate two or more dispensing paths 103 and associated channels at similar 1o vibrational settings. If each dispensing path 103 includes two or more item-dispensing channels, a dispensing path vibration unit 110 may vibrate two or more channels of a respective di~pe>isiiig path 103 at a similar vibrational setting, or dispensing path vibration device 110 may vibrate each channel of a dispensing path 103, ~ one, two, three, four, or more channels of a respective dispensing path 103 at a similar vibrational settings, ~ in of along similar 15 vibrational axes, at similar vibrational magnitude, at similar vibrational frequencies, or coriibinations thereof. Moreover, dispensing path vibration devices 110 may vibrate each dispensing path 103 independently of other dispensing paths 103, so that each dispensing path 103 may receive items supplied by feeder bowl 102 and dispensing items singularly.
[0059] Fig. 3 shows a control system according to the present invention for use with a 20 rotary, vibratory dispenser. The control system may include a processor 111, a memory (not shown), and an input device 112. Processor 111 may be a microprocessor, a general purpose piogram logic control (PLC), or the like. Memory may be separate from processor 111, or rrieinory may be included with processor 111, or both. Input device 112 may include a keyboard, a touch screen interface, a wireless I/O communication port, or the like.
Processor 111 may be 25 positioned on rotary, vibratory dispenser 100, e.Q., on a frame ofrotary, vibratory dispenser 100.
[0060] A plurality of rotational and vibrational settings for each of feeder bowl rotation drive 108, feeder bowl vibration device 109, dispensing path vibration device 110, and may be stored in the control system. For example, memory may store one or more rotational speed settings for feeder bowl rotation drive 108. Feeder bowl 102 rotational speed settings may 3o correspond to a desired rate of filling containers at rotary, vibratory dispenser 100, a desired rate PATENT
Attorney Docket No. 016354.0206 of delivery of items from bulk delivery apparatus 104 to feeder bowl 102, or to a desired rate of dispensing items from dispensing paths 103. In embodiments of the invention in which feeder bowl rotation drive 108 rotates dispensing paths 103, memory may store one or more rotational speed settings for dispensing paths 103. The rotational speed settings may correspond to a desired rate of filling containers at rotary, vibratory dispenser 100.
[0061] Vibrational settings for feeder bowl vibration device 109 may be stored in memory. Each vibrational setting may include a magnitude of vibration, a frequency of vibration, or both, in a first plane, in a second plane, or both. Each vibrational setting may correspond to a rate at which bulk delivery apparatus 104 delivers items to rotary, vibratory to ' dispenser 100, a rate of supplying items from feeder bowl 102 to dispensing paths 103, or both.
Each vibrational setting may be proportionate to a physical characteristic, ,e.~., a volume, a density, a temperature, a weight, or the like, of items to be dispensed.
[0062] Vibrational settings for dispensing path vibration devices 1109 may be stored in memory. Each vibrational setting may include a magnitude of vibration, a frequency of vibration, or both, in a first plane, in a second plane, or both. Each vibrational setting may correspond to a rate at which feeder bowl 102 supplies items to dispensing paths 103, a desired rate of dispensing items from each dispensing path 103, or both: Each vibrational setting may be proportionate to a physical characteristic, e.~., a volu~ne,.a density, a temperature, a weight, or the like, of items to be dispensed.
[0063] Vibrational settings for may be stored in memory. Each vibrational setting may include a magnitude of vibration, a frequency of vibration, or both, in a first plane, in a second plane, or both. Each vibrational setting may correspond to a rate at which bulk delivery apparatus 104 delivers items to feeder bowl 102, a desired rate of dispensing items from each dispensing path 103, or both. Each vibradonal setting may be proportionate to a physical characteristic, ~ a volume, a density, a temperature, a weight, or the like, of items to be delivered by Bulk delivery apparatus 104.
[0064] A predetermined range of one or more physical characteristics of each item to be dispensed may be stored in memory. For example, a predetermined range of weights, densities, or volumes may be stored for a particular item. Processor 111 may use a parkicular predetermined range of one or more physical characteristics of an item to identify each dispensed ' PATEIV'T
Attorney Docket No. 016354.0206 item the measured value of which is within a predetemlined range and to identify each dispensed items the measured value of which is greater than or less than the predetermined range for that item. For example, each sensing unit 117 may measure a volume of each item dispensed from a dispensing path 103 or item-dispensing channel and h~ansmit each measurement to control unit.
~ Control unit may compare each measurement to a predetermined range of volumes for that particular item to determine whether the measured volume of each item is within the predetermined range of volumes for that particular item, or whether the measured volume for an item is greater than or less than the predetermined range of volumes for the item.
[0065] By receiving a measurement of a physical characteristic of a 'dispensed iterii from tb sensing unit 117 and comparing each measurement with a predetermined range for that physical characteristic, processor 111 may identify each item the measured physical characteristic of which is within specification, i-e., within a predetermined range for that item. This identificatiow enables processor 111 to control dispensing of items, ~ via control of dispensing heads 105, so that each dispensing head 105 may direct predetermined quantities of items, the measured physical characteristic: of each. of which is within a predeternzined range for that item, to a container. Moreover, processor 111 may control dispensing heads 105, so that each dispensing head 105 may divert items the measured value of which is greater than or less than a predetermined range for that item away from a container. Comparison of a measurement of a physical characteristic of a dispensed item to a predetermined range for that physical . characteristic enables processor 111 to determine whether each dispensing path 103 is dispensing items singularly.
[0066] Processor 111 may receive instructions from one or more input devices 112.
Input device 112 may enable remote control of, and communication with, processor 111. Input device 112 may enable selection of one or more operational settings of rotary, vibratory dispenser 100, ~ selection of a rotational speed of feeder bowl rotation drive 108, selection of a vibrational magnitude and frequency in one or more planes of feeder bowl vibration device 109 ..or dispensing path vibration device 110, so that rotary, vibratory dispenser 100 may be operated at a variety of operational settings.
{0067] Each operational setting may be stored in a memory of control system and selected via input device 112. For example, input device 112 may enable selection of a PATENT
Attorney Docket Na. 016354.0206 rotational speed of feeder bowl 102, a rotational speed ~of dispensing paths 103, a vibrational magnitude and frequency_of feeder bowl 102 in one ~or more planes, a vibrational magnitude and fi~equency of one or more dispensing paths 103 in one of more planes, or the like. Selection of these operational settings via input device 112 enables processor 111 to control a rotational speed of feeder bowl rotation drive 108, a vibrational magnitude and frequency of feeder bowl vibration device 109, one or more vibrational magnitudes or frequencies of dispensing path vibration devices 110, a drive setting for , or the like. 'Input device 112 may enable entry of various operational settings in addition to selection of operational settings stored in memory.
Input device 112 may enable modification of stored operational settings, as well. Input device lti 112 also enables selection of a desired dispensing rate, a desired fill rate for containers, or the like.
[0068] Referring to Fig. 3, . processor 111 may communicate with feeder bowl rotation drive 108, feeder bowl vibration device 109, dispensing path vibration devices 110, and , via various communication means, ~ hard wire, wireless transmission, or the like, or . a combination of these communication means, so that processor 111 may control operation of rotary, vibratory dispenser 100. Moreover, processor 111 may communicate with a feeder bowl rotation sensor 114, a feeder bowl vibration sensor 115, dispensing path vibration sensors 116, sensing units 117 and a bulk delivery sensor 104b that detects, _eg, weighs, counts, or the like, items delivered from bulk delivery apparatus 104 to rotary, vibratory dispenser 100.
[0069] Feeder bowl rotation sensor 114 detects; ~ measures, a rotational speed of feeder bowl 102. Rotation sensor 114 may detect a rotational speed of feeder bowl 102 directly, eTi~., by being positioned adjacent to feeder bowl 102 to sense a rotation of feeder bowl 102, or indirectly, e.~., by being positioned at rotation drive 8 to detect a rotational speed of rotation drive 8. Rotation sensor 114 transmits signals corresponding to a rotational speed of feeder bowl 102 or a rotational speed of feeder bowl rotation drive 108, or both, to processor 111.
[0070] Feeder bowl vibration sensor 115 detects, e.~., measures, a vibration of feeder bowl 102. Feeder bowl vibration. sensor 115 may detect a frequency of vibration of feeder bowl 102, a magnitude of vibration of feeder bowl 102, or both. Moreover, feeder bowl vibration sensor 115 may detect the frequency of vibration of feeder bowl 102, the magnitude of vibration of feeder bowl 102, or both, in a first plane, a second plane, or both. Feeder bowl vibration PATENT
Attorney Docket No. 016354.0206 sensor 11 S may be positioned in direct contact with feeder bowl 102 to measure a vibration of feeder bowl 102. Feeder bowl vibration sensor 115 may be positioned at feeder bowl vibration device 109 for measuring a vibration of feeder bowl vibration device 109. For example, feeder bowl vibration sensor 115 may transmit signals corresponding to one or more of a frequency of vibration, a magnitude of vibration, and a direction or plane of vibration of feeder bowl 1 U2, or feeder bowl vibration device 109, or both to processor 111.
[0071] Dispensing path vibration sensors 116 may detect, ~ measure, one or more of a ;'frequency of vibration of each dispensing path 103, a magnitude of vibration of each dispensing path 103, or a direction of vibration of each dispensing path 103. Moreover, each dispensing to path vibration sensor lI6 may detect a frequency of vibration of dispensing paths 103, a magnitude of vibration of dispensing paths 103, or both, in a first plane, a second plane, or both.
Each dispensing path vibration sensor 116 may detect a vibration of one or more dispensing paths.103. Dispensing path vibration sensors 116 may measure a vibration of each dispensing path 103 directly, ~ by being positioned at a dispensing path 103. Dispensing path vibration sensors 116 may measure a vibration of each dispensing path 103 indirectly;
e.~, by being positioned at a dispensing path vibration device 110 to measure a vibration of each dispensing path vibration device 110.
[0072) If a dispensing path 103 includes two or more item-dispensing channels, a dispensing path vibration sensor 116 may measure a vibration of each item-dispensing channel 2o directly, indirectly, or both. If each dispensing path vibration device 110 vibrates multiple channels, dispensing path vibration sensors 116 may measure a vibration of each individual channel or a vibration of the multiple channels vibrated by a respective dispensing path vibration device 110. Each dispensing path vibration sensor 116 transmits signals corresponding to measured vibrations of one or more dispensing paths 103, dispensing path vibration devices 110, or both, to processor 111. Moreover, dispensing path vibration sensors 116 may transmit signals corresponding to one or more of a frequency of vibration, a magnitude of vibration, and a direction of vibration of one or more channels of each dispensing path 103 to processor 111.
[0073] Sensing units 117 may measure a physical characteristic, e.~.. a weight, a volume, a density, or the like, of each dispensed item and transmit signals corresponding to the 3o measurements of each dispensed item to processor 111. Sensing units 117 may be positioned at PATENT
Attorney Docket No. 016354.0206 each dispensing path 103, ,e.~., adjacent to a distal end of each dispensing path to measure items dispensed from each dispensing path 103. In an embodiment of the present invention, sensing units 117 may be positioned at a dispensing head 105, ~ at an opening of a dispensing head .105, as shown in Wig. 1, to measure items received by dispensing head 105.
Sensing units 117 inay be positioned at a distal end of each item-dispensing channel of each dispensing path 103.
[0074] Sensing units 117 may include inductive sensors, capacitative sensors, photoelectric sensors, optical sensors, electromagnetic radiation sensors, proximity switches, or the like for riieasuring one or more physical characteristic of each dispensed item. For example, an electromagnetic radiation sensor or an optic sensor, such as those available from Batching to systems, Inc., Prince Frederick, Maryland, may measure a volume of each dispensed item by directing electromagnetic radiation from a source of electromagnetic radiation onto a detector and calculating a volume of each item passing between the electromagnetic source and detector based on a change in the amount of electromagnetic radiation detected by the detector as each item passes between the electromagnetic source and the detector. Such sensing units 11'7 are is disclosed, e.Q., in U.S. Patent No. 5,454,016 to Holmes and U.S. Patent No.
5,313,508 to Ditman et al., the contents of both patents are incorporated herein by reference in their entirety.
[0075) . Sensing units 117 may include a scale, ~ a strain gauge, for measuring a weight of each singularly dispensed item. Further, sensing units 117 may include an optic sensor or scanning unit for measuring a volume of each singularly-dispensed item.
Sensing units 117 may 20 include a proximity such for detecting each singularly dispensed to provide a count of each dispensed item.
[0076] According to another embodiment of the invention, a pair of sensing units 117 rriay be positioned at each dispensing path 103 or item-dispensing channel.
Each pair of sensing units 117 may measure two physical characteristics of each dispensed item. For example, a pair 25 of sensing units 117 may measure a weight and a volume of a each dispensed item, so that processor 111 may calculate a density of each dispensed item. ~ Thus, this dual sensing unit may further improve an accuracy of a count, or a measurement, or both of each dispensed item.
[0077] Processor 111 also may control operation of bulk delivery apparatus 104. For example, processor 111 may communicate with a bulk delivery sensing unit 18, ~
a scale, or 3o the like, and a bulk delivery drive sensor 19, e,T~., a sensor positioned at a bulk delivery drive PATENT
Attorney Docket No. 016354.0206 104a of bulk delivery apparatus 104. Bulk delivery sensing unit 18 may transmit signals corresponding to a physical characteristic, e.g., a weight, a volume, a count, or the like, of items contained within bulk delivery apparatus or items delivered from bulk delivery apparatus 104, or both, so that processor 111 may calculate a quantity of items delivered by bulk delivery apparatus 104 to rotary, vibratory dispenser. Moreover, bulk delivery drive sensor 19 may transmit signals corresponding to a vibration, a rotational speed, or the like of bulk delivery drive 104a, so that processor 111 may control a rate at which bulk delivery apparatus 104 delivers items to rotary, vibratory feeder, e.~., to feeder bowl 102 of rotary, vibratory dispenser.
Processor 111 may receive an input of one or more settings of bulk delivery drive 104a, so that 1'0 processor I l I may control delivery of items from bulk delivery apparatus 104 to feeder bowl 102 to correspond to a desired or expected rate of dispensing items from rotary, vibratory dispenser.
[0078] With reference to Fig. 5, a control program, ~ a control routine, is disclosed.
Processor 111 receives input, ,e.~., via input device 112, regarding one or more operational settings of rotary, vibratory dispenser (step S1). In one embodiment of the invention, the settings may be preset and stored in a memory of processor 111, so that one or more settings may be selected by input device 112. Alternatively, settings for one or more of feeder bowl rotation drive 108; feeder bowl vibration device 109, dispensing path vibration, device 110, bulk delivery drive 104a may be entered into processor 111, via input device 112.
2o [0079] Feeder bowl rotational drive settings (step S8) may correspond to a desired or expected fill rate of containers to be received and filled at rotary, vibratory dispenser. Feeder bowl vibrational settings (step S9) may be dictated or driven by a physical characteristic of items to be dispensed, a rotational speed of feeder bowl 102, a rate of delivery of items from bulk delivery device 4, or a desired rate of supplying items from feeder bowl 102 to, each dispensing path 103.
[0080) Dispensing path vibrational settings (step S3) may be dictated or driven by a physical characteristic of items to be dispensed or to a desired dispensing rate of items. In response to the input settings, processor 111 may control operation of feeder bowl rotation drive 108, feeder bowl vibration device 109, dispersing path vibration device 110, and bulk delivery d".~ i PATENT
Attorney Docket No. 016354.0206 drive 104a (not shown), so that rotary, vibratory dispenser receives a plurality of items and dispenses the items singularly from each dispensing path 103.
[0081] Moreover, processor 111 may continuously monitor and regulate, e.~., via a control routine, feed back loop, or the like (not shown), feeder bowl rotation drive 108, feeder bowl vibration device 109, and dispensing path vibration devices 110, in response to signals received from feeder bowl rotation sensor 114, feeder bowl vibration sensor 115, and dispensing path vibration sensor 116, so that feeder bowl rotation drive 108, feeder bowl vibration device :'109, and dispensing path vibration devices 110 operate at desired operational settings.
[0082] Sensing units 117 measure a physical characteristic of each item dispensed fi'om : v each dispensing path 103 or item-dispensing channel and transmit signals corresponding to each measurement to processor 111 (step SS). Based on these received signals, processor 111 determines, for each dispensing path 103, whether items are being dispensed singularly (step S6).
Tf processor. l l l determines that items are being dispensed singularly from each dispensing path 103, processor 111 next determines whether items niay be dispensed singularly at an increased ' rate (step S7).
[0083] If processor 111 determines that items may be dispensed singularly at an increased rate, processor 111 adjusts one or more of bulk delivery drive 104a (step S10), feeder bowl vibration device 109 (step S9), or dispensing path vibration devices 110 (step S8), so that items may be dispensed singularly at an increased rate. Processor 111 then receives signals from 20~ : sensing units 117 corresponding to each item or items dispensed from each dispensing path 103 (step SS) and determines whether items are being dispensed singularly from each dispensing path 103 at the increased dispensing rate.
[0084] If processor 111 determines that items are not being dispensed singularly, ~ if processor 111 receives measurements from sensing unit 117 indicating that items are being dispensed in pairs or in an overlapped relationship from one or more dispensing paths 103 (step S6), processor 111 may adjust one or more of bulk delivery drive 104a (step S13), feeder bowl vibration device 109 (step S 12), or dispensing path vibration devices 110 (step S 11), so that items may be dispensed singularly from each dispensing path 103. For example, processor 111 may adjust bulk delivery drive 104a (step S 13) to reduce the rate at which items are delivered to 3o feeder bowl 102. Alternatively or additionally, processor 111 may adjust feeder bowl vibration PATENT
Attorney Docket No. 416354.0206 device 109 (step S 12), or one of more dispensing path vibration devices 110 (step S 11 ), so that items may be delivered uniformly from feeder bowl 102 to dispensing paths 103 and so that each dispensing path 103 may dispense items singularly.
[0085] In response to measurements received from sensing units 117, processor 111 may continue to adjust one or morev of bulk delivery drive 104a (step S 13), feeder bowl vibration device 109 (step S 12), or dispensing path vibration devices 110 (step S 11), as necessary, until iteiris are dispensed singularly from each dispensing path 103. Moreover, processor 111 may 'adjust a frequency of vibration, . a magnitude of vibration, or both, in a first direction, a second direction, or both, of feeder bowl vibration device (step S 12), dispensing path vibration devices 1I0 (step 511), and bulk delivery drive 104a (step S13) (if applicable), so that dispensing paths 103 dispense items singularly, ~ in response to signals received from sensing units 117. Once processor 111 determines that items are dispensed singularly from each dispensing path 103, processor 111 continues to monitors operation of rotary, vibratory dispenser (step 514).
[0086] Processor 111 also counts each item dispensed from each dispensing path 103, so that predetermined quantities ofitems may be directed to containers or packages. For example, processor 111 may. count each°. item dispensed from a dispensing path 103 or channel to a respective dispensing 'head 105 and activate each respective dispensing head 105 to direct predetermined quantities of items, the measured physical characteristic of each of which items is within a predetermined range. of physical characteristics, to a container or package.
fo [0087] Processor 111 may activate a dispensing head 105 to divert quantities of items in which at least one item has a measured physical characteristic that is greater than or less than a predetermined range of physical characteristics, so that containers or packages are not filled with defective items, ~ items whose weight, volume, shape is not within a predetermined range of measurements. Alternatively, processor l l l may increment a count of a predetermined quantity 25 of items for each item the measured physical characteristic of which is greater than or less than a predetermined range of physical characteristics, so that dispensing heads 105 dispense at least a predetermined quantity of items, each with a measured physical characteristic that is within a predetermined range of physical .characteristics.
{0088] In a further embodiment of the present invention, processor 111 may define a 3o predetermined range of physical characteristics for one or more physical characteristics of an PATENT
Attorney Docket No. 016354.0206 item to be dispensed liy rotary, vibratory dispenser 100. For example, processor 111 may operate rotary, vibratory dispenser 100 to dispense items singularly from each dispensing path 103 and measure a physical characteristic of each singularly dispensed item.
Processor 111 may then establish a predetermined range of physical characteristics of one or more physical . 5 characteristics of each dispensed item based on the measure values of each item transmitted to processor 111 from sensing units 117. Moreover, processor 111 may store define predetermined range in a memory for future use.
- [0089) Referring to I~g. 7, a dispenser 100' for use with the control system of the present invention is depicted. The features and advantages of dispenser 100' are substantially siinilat~ to the features and advantages of dispenser 100. Therefore, the similar features and advantages of dispenser 100 and dispenser 100' are not discussed further with respect to dispenser 100'.
l5ispenser 100' may comprise feeder bowl 102, dispensing paths '103 positioned. around feeder bov~rl 102, a dispensing path rotation drive 108' for rotating dispensing paths 103, feeder bowl vibration device 109, and the one or more dispensing path vibration devices 110 for vibrating i5 each dispensing path 103. In this embodiment of the present invention, feeder bowl vibration device 109 may vibrate feeder bowl 102, the one or more dispensing path vibration devices 110 may vibrate dispensing paths 103, and dispensing path rotation drive 108' may rotate dispensing piths 103 around feeder bowl 102. For example, an edge of dispensing paths 103 may be . positioned below and may overlap a portion of feeder bowl 102, such that at least one vertical 2o plane includes both dispensing paths 103 and feeder bowl 102. Moreover, in this embodiment of the present invention, feeder bowl 102 does not rotate. Consequently, a lighter motor may be used, there are fewer moving parts is dispenser 100', and dispenser 100' may have increased control.
[0090) While the invention has been described in connection with preferred 25 eriibodiments, it will be understood by those of ordinary skill in the art that other variations and modifications of the preferred embodiments described above may be made without departing from the scope of the invention. Moreover, other embodiments of the present invention will be apparent to those of ordinary skill in the art from a consideration of the specification or a practice of the invention disclosed herein, or both.
Claims (20)
1. A control system for regulating a dispenser, wherein the dispenser comprises a feeder bowl and one or more dispensing paths, wherein the control system comprises:
a control unit for controlling each of:
a feeder bowl vibration device for vibrating the feeder bowl;
a rotation drive for rotating the one or more dispensing paths; and at least one dispensing path vibration device for vibrating the one or more dispensing paths; and one or more dispensing heads, wherein each of the one or more dispensing heads receives items from at least one of the one or more dispensing paths and comprises:
a dispensing chute for directing a first plurality of the received items toward the dispenser, wherein at least one physical characteristic of each of the first plurality of the received items is within a predetermined range of physical characteristics; and a diversion chute for directing a second plurality of the received items away from the dispenser.
a control unit for controlling each of:
a feeder bowl vibration device for vibrating the feeder bowl;
a rotation drive for rotating the one or more dispensing paths; and at least one dispensing path vibration device for vibrating the one or more dispensing paths; and one or more dispensing heads, wherein each of the one or more dispensing heads receives items from at least one of the one or more dispensing paths and comprises:
a dispensing chute for directing a first plurality of the received items toward the dispenser, wherein at least one physical characteristic of each of the first plurality of the received items is within a predetermined range of physical characteristics; and a diversion chute for directing a second plurality of the received items away from the dispenser.
2. The control system of claim 1, wherein the control unit controls a rotational speed of the rotation drive, a vibration of the feeder bowl vibration device, and a vibration of the at least one dispensing path vibration device.
3. The control system of claim 1, wherein the control unit controls a rotational speed of the rotation drive according to a desired number of containers to be filled by the dispenser, and a vibration of the feeder bowl vibration device and the at least one dispensing path vibration device according to the rotational speed and the at least one physical characteristic of each of the items to be dispensed, such that the dispensing paths dispense the items singularly.
4. The control system of claim 1, wherein the at least one dispensing path vibration device comprises a plurality of dispensing path vibration devices, each of the dispensing path vibration devices vibrating one of the one or more dispensing paths, and further wherein the control unit controls a vibration of the feeder bowl vibration device and each of the dispensing path vibration devices, such that the one or more dispensing paths dispense the items singularly.
5. The control system of claim 4, wherein each of the one or more dispensing paths comprises at least one channel for dispensing items singularly.
6. The control system of claim 1, wherein the control unit controls a vibration of the feeder bowl vibration device and the at least one dispensing path vibration device in a substantially horizontal plane.
7. The control system of claim 1, wherein the control unit controls a vibration of the feeder bowl vibration device and the at least one dispensing path vibration device in a substantially vertical plane.
8. The control system of claim 1, wherein the control unit controls a vibration of the feeder bowl vibration device and the at least one dispensing path vibration device in a first plane and a second plane and wherein the first plane and the second plane are transverse to one another.
9. The control system of claim 1, wherein the control unit controls a frequency of vibration of the feeder bowl vibration device and the at least one dispensing path vibration device.
10. The control system of claim 1, wherein the control unit controls a frequency of vibration of the feeder bowl vibration device and the at least one dispensing path vibration device in a first plane and a second plane.
11. The control system of claim 1, wherein the control unit controls a magnitude of vibration of the feeder bowl vibration device and the at least one dispensing path vibration device.
12. The control system of claim 1, wherein the control unit controls a magnitude of vibration of the feeder bowl vibration device and the at least one dispensing path vibration device in a first plane and a second plane.
13. The control system of claim 1, wherein the control unit controls a frequency and a magnitude of vibration of the feeder bowl vibration device and the at least one dispensing path vibration device in a first plane and a second plane.
14. The control system of claim 1, further comprising:
a memory for storing a plurality of vibrational settings for the feeder bowl vibration device and the at least one dispensing path vibration device, wherein each of the vibrational settings is proportionate to the at least one physical characteristic of the items to be dispensed; and an input unit for selecting one of the vibrational settings and transmitting the vibrational setting to the control unit, wherein the control unit adjusts a vibration of the feeder bowl vibration device and a vibration of the at least one dispensing path vibration device, so that the feeder bowl dispenses the items uniformly and the one or more dispensing paths dispense the items singularly.
a memory for storing a plurality of vibrational settings for the feeder bowl vibration device and the at least one dispensing path vibration device, wherein each of the vibrational settings is proportionate to the at least one physical characteristic of the items to be dispensed; and an input unit for selecting one of the vibrational settings and transmitting the vibrational setting to the control unit, wherein the control unit adjusts a vibration of the feeder bowl vibration device and a vibration of the at least one dispensing path vibration device, so that the feeder bowl dispenses the items uniformly and the one or more dispensing paths dispense the items singularly.
15. The system of claim 1, wherein the at least one physical characteristic of at least one of the second plurality of the received items is greater than or less than the predetermined range of physical characteristics.
16. The dispensing system of claim 15, wherein each of the dispensing heads further comprises at least one holding chamber, wherein the at least one holding chamber directs the first plurality of the received items to the dispensing chute, and directs each of the second plurality of the received items to the diversion chute.
17. The dispensing system of claim 15, further comprising means for releasing the second plurality of the received items from the one or more dispensing heads.
18. The dispensing system of claim 17, further comprising means for separating the second plurality of the received items released from the dispensing head, which have the at least one physical characteristic within the predetermined range of physical characteristics, from the second plurality of the received items released from the dispensing head, which have the at least one physical characteristic greater than or less than the predetermined range of physical characteristics.
19. The dispensing system of claim 18, further comprising means for delivering the second plurality of the received items released from the dispensing head, which have the at least one physical characteristic within the predetermined range of physical characteristics to the feeder bowl.
20. The system of claim 19, wherein the means for separating comprises at least one strainer, wherein the means for delivering comprises a conveyer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/743,426 | 2003-12-23 | ||
| US10/743,426 US7063215B2 (en) | 2002-06-24 | 2003-12-23 | Control systems and methods of dispensing items |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2490667A1 true CA2490667A1 (en) | 2005-06-23 |
Family
ID=34700493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2490667 Abandoned CA2490667A1 (en) | 2003-12-23 | 2004-12-22 | Control systems and methods of dispensing items |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2490667A1 (en) |
-
2004
- 2004-12-22 CA CA 2490667 patent/CA2490667A1/en not_active Abandoned
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