Single stage area bulk food dispenser method and apparatus

• US 6,131,622 A
• Filed: 10/30/1997
• Issued: 10/17/2000
• Est. Priority Date: 10/30/1997
• Status: Expired due to Fees

• Current Assignee: Automated Equipment LLC
• Original Assignee: Robot Aided Manufacturing Center, Inc.
• Inventors: Fritze, Karl J., Kuhlemeier, Kirby J., Herpers, Ferdinand J., Koerner, Bruce H.
• Primary Examiner(s): Douglas, Steven O.
• Application Number:
  US08/961,283
• Time in Patent Office: 1,083 Days
• Field of Search: 141/196, 141/192, 141/129, 141/83, 141/98, 222/56, 222/58, 222/77, 221/158, 221/224, 221/225, 221/236
• US Class Current: 141/196
• CPC Class Codes: G07F 11/44 in which magazines the articles are stored in bulk
• CPC Class Codes: G07F 13/04 by weight

Abstract

A method and apparatus are provided for dispensing articles into a manually placed receiving basket and for controlling the dispensing mechanism to more accurately dispense the desired articles. The dispenser 20 includes a main storage area 39 which can take the form of a bulk storage hopper, an accumulator area 36 into which the dispensed articles are transferred during the "gravimetric" dispensing of the articles. The accumulator area 36 may be formed from the same externally formed walls of the primary storage area 39 and hopper 21. An assembly for controllably transferring articles from the primary area 39 to the accumulator area 36 is also provided. This controllable transfer assembly may include a drum 51 having a plurality (or series) of elevated areas 52 about the circumference 53 of the drum 51, a diverter shape 54 located in the primary storage area 39, and an incline slope shape 37 leading down to the drum 51. A drive assembly 159 is provided to rotate the drum 51 when transferring articles. The articles in the accumulator area 36 are retained in that area by doors 32 of a gate assembly. The gate assembly are selectively operated between open and closed positions. A load cell 165 comprising a weight sensing assembly is arranged and configured to weigh the articles retained by the gate assembly. A controller 152 monitors the load cell 165 and operates the drive assembly 159 to control the articles dispensed into the accumulator area 136 to a predetermined level. By monitoring the movement of the drum 51 and the weight of the transferred articles, the controller 152 can determine the manner in which the drum 51 might be moved in a future dispensing cycle to increase the accuracy of the dispensed articles.

Claims

1. An apparatus for dispensing food articles from a primary storage holding area to a basket, consisting essentially of:

a) a primary food article storage location;

b) an accumulator food article location arranged and configured proximate the primary food article storage location, wherein the food articles fall by gravity to a basket shelf, the basket shelf generally located directly beneath the accumulator location, the basket shelf being arranged and configured for receiving a manually placed basket;

c) means for controllably transferring the food articles from the primary to the accumulator location in response to a control signal;

d) means for initiating a dispense signal; and

e) processing means for receiving the dispense signal and generating a control signal for the transferring means.

2. An apparatus for dispensing food articles from a primary storage holding area to a basket, consisting essentially of:

a) a primary food article storage location;

b) an accumulator food article storage location, the accumulator storage location including gate means arranged and configured to selectively open upon receipt of a gate open signal, wherein the food articles fall by gravity to a cooking basket shelf, generally located directly beneath the gate means, the basket shelf being arranged and configured for receiving a manually placed basket;

c) means for controllably transferring the food articles from the primary to the accumulator storage location in response to a control signal;

d) measuring means for weighing the food articles in the accumulator storage location and generating a weigh signal;

e) means for initiating a dispense signal; and

f) processing means for receiving the weigh signal, comparing the received weigh signal to a predetermined weigh value, and generating a control signal for the transferring means, the processing means further including means for receiving the dispense signal and generating a gate open signal.

3. The apparatus of claim 2, wherein the measuring means includes a load cell.

4. The apparatus of claim 3, wherein the processing means zeroes the load cell prior to transferring the articles to the accumulator food article storage location, wherein accumulated tolerance differences in nominal part weights may be taken into account in order to optimize the weight of the transferred articles.

5. The apparatus of claim 2, wherein the transferring means includes:

a) a rotatable drum;

b) a diverter wall spatially located a predetermined distance above the drum; and

c) an incline slope running into the side of the drum, wherein articles to be dispensed tend to migrate down the inclined slope toward the drum and articles above the drum are retained absent rotation of the drum.

6. The apparatus of claim 5, wherein the drum includes alternating raised and lowered areas running parallel with the longitudinal axis of the drum.

7. The apparatus of claim 5, wherein the transferring means includes a prime mover for rotating the drum.

8. The apparatus of claim 7, wherein the prime mover is a direct current motor.

9. The apparatus of claim 2, wherein the a primary food article storage location and the accumulator food article storage location are integrally formed within a single molded plastic shell.

10. The apparatus of claim 9, wherein the inclined slope is integrally formed from the single molded plastic shell.

11. An apparatus for dispensing articles from a primary storage holding area, comprising:

a) a primary article storage location;

b) an accumulator storage location, the accumulator storage location including gate means arranged and configured to selectively open upon receipt of a gate open signal, wherein the articles fall by gravity to a shelf, generally located directly beneath the gate means, the shelf being arranged and configured for receiving a manually placed basket;

c) means for controllably transferring the articles from the primary to the accumulator storage location in response to a control signal;

d) measuring means for weighing the articles in the accumulator storage location in real time and generating a weigh signal;

e) means for initiating a dispense signal; and

f) processing means for receiving the weigh signal, comparing the received weigh signal to a predetermined weigh value, and generating a control signal for the transferring means, the processing means further including means for receiving the dispense signal and generating a gate open signal, wherein the processing means accept the real time weigh signals and vary the control signal in accordance with predetermined parameters.

12. The apparatus of claim 11, wherein the transferring means includes:

a) a rotatable drum;

b) a diverter wall spatially located a predetermined distance above the drum; and

c) an incline slope running into the side of the drum, wherein articles to be dispensed tend to migrate down the inclined slope toward the drum and articles above the drum are retained absent rotation of the drum.

13. An apparatus for dispensing articles from a primary storage holding area, comprising:

a) a primary article storage location;

b) an accumulator storage location, the accumulator storage location including gate means arranged and configured to selectively open upon receipt of a gate open signal, wherein the articles fall by gravity to a shelf, generally located beneath the gate means;

c) means for controllably transferring the articles from the primary to the accumulator storage location in response to a control signal;

d) measuring means for weighing the articles in the accumulator storage location in real time and generating a weigh signal, the measuring means includes a load cell;

e) means for initiating a dispense signal;

f) processing means for receiving the weigh signal, comparing the received weigh signal to a predetermined weigh value and generating a control signal for the transferring means, the processing means further including means for receiving the dispense signal and generating a gate open signal, wherein the processing means accept the real time weigh signals and vary the control signal in accordance with predetermined parameters; and

wherein the gate means are comprised of;

a) a pair of longitudinally opposing rods, each of the rods being rotatable about its longitudinal axis;

b) a pair of doors, each door being operatively mounted to a respective rod, wherein rotation of the rods translates to rotation of the doors;

c) a first and second opposing member, wherein each member is connected to one of the rods and the members are rotatable about the longitudinal axis of the rods, and wherein the members have a bottom end and a top end, the top end of the first member being connected to the bottom end of the second;

d) a spring connected between the bottom ends of the members for biasing the members into a first position which translates the doors into a closed position;

e) a cam follower located on the top end of the first member; and

f) a cam means, wherein movement of the cam operates to move the top ends of the first and second members toward one another to a second position which translates into the doors in an open position.

14. The apparatus of claim 13, wherein the cam means is oblong and the movement of the cam means is rotational.

15. The apparatus of claim 14, wherein the gate open signal is directed to a motor which drives the cam.

16. A method of dispensing articles, comprising:

a) loading the articles into a primary article storage location;

b) initiating a dispense signal;

c) controllably transferring the articles to an accumulator storage location in response to a control signal, the accumulator storage location including gate means arranged and configured to selectively open upon receipt of a gate open signal, wherein the articles fall by gravity to a shelf, generally located directly beneath the gate means;

d) placing manually a basket on the shelf;

e) weighing the articles in the accumulator storage location in real time and generating a weigh signal;

f) receiving the weigh signal, comparing the received weigh signal to a predetermined weigh value, and varying the control signal; and

g) generating a gate open signal.

17. An apparatus for dispensing food articles from a primary storage holding area to a basket, consisting essentially of:

a) a primary food article storage location;

b) an accumulator food article location arranged and configured proximate the primary food article storage location, wherein the food articles fall by gravity to a basket shelf, the basket shelf generally located directly beneath the accumulator location, the basket shelf being arranged and configured for receiving a manually placed basket;

c) a transferring member arranged to controllably transfer the food articles from the primary to the accumulator location in response to a control signal;

d) a member arranged to initiate a dispense signal; and

e) a processor arranged to receive the dispense signal and generate a control signal for the transferring member.