Chip packing apparatus and method

• US 4,054,015 A
• Filed: 05/17/1976
• Issued: 10/18/1977
• Est. Priority Date: 05/17/1976
• Status: Expired due to Term

• Current Assignee: Imasco Ltd. (British American Tobacco PLC)
• Original Assignee: Imasco Ltd. (British American Tobacco PLC)
• Inventors: Rowell, Lorne A.
• Primary Examiner(s): McGehee, Travis S.
• Application Number:
  US05/687,008
• Time in Patent Office: 519 Days
• Field of Search: 53/26, 53/61, 53/62, 53/78, 53/159, 100/422, 214/6 D
• US Class Current: 53/446
• CPC Class Codes: B65B 5/064 Potato chips

Abstract

An apparatus for stacking food chips in a cylindrical container. Random chips are oriented into tandem alignment on an inclined conveyor traveling in an upward direction and are deposited into an upright cylindrical stacking tube above a station for the empty cylindrical containers. A valve comprising operatively associated upper and lower blades in the stacking tube load vertical stacks of chips into the cylindrical containers.

Claims

1. In an apparatus for orienting and packing food chips in a cylindrical container comprising:

a. conveyor means having infeed and outlet ends and including chip receiving recesses on an inclined conveying surface for receiving randomly oriented food chips at the lower end of the conveying surface and translating said chips into continuous tandem alignment at the upper end of the conveying surface,

b. an upright mounted cylindrical stacking tube disposed adjacent the outlet end of said conveyor means to receive and stack food chips from said conveyor,

c. feed means adapted to position the upper open end of a series of empty cylindrical containers in a chip receiving station below said stacking tube in sequence so that the top edge of said container in said station is in abutting relationship with the bottom of said stacking tube, and

d. valve means associated with said stacking tube for loading a stack of predetermined size of said food chips in said cylindrical container.

2. The apparatus of claim 1 together with means for vibrating food chips received by said stacking tube thereby decreasing the stability of said chips to stand on edge.

3. The apparatus of claim 1 in which said conveyor means comprises an inclined conveyor with its upper end adjacent the top of said stacking tube, said conveying surface including partitions across its line of travel spaced to define chip movement recesses, and feed means for continuously directing chips into said recesses at the lower end of said conveyor belt, whereby said chips are spaced apart in tandem alignment along the conveyor belt.

4. The apparatus of claim 3 in which said conveyor means includes an inclined chute with its upper end adjacent the outlet end of said conveyor belt and its lower end adjacent the top of said stacking tube to accelerate chips entering said tube and thereby decreasing the stability of said chips to stand on edge.

5. In an apparatus for orienting and packing food chips in cylindrical container comprising:

a. conveyor means having infeed and outlet ends and including recesses on the conveying surface for receiving randomly oriented food chips and translating said chips into continuous tandem alignment,

b. an upright mounted cylindrical stacking tube disposed adjacent the outlet end of said conveyor means to receive and stack food chips from said conveyor,

c. feed means adapted to position the upper open end of a series of empty cylindrical containers in a chip receiving station below said stacking tube in sequence so that the top edge of said container in said station is in abutting relationship with the bottom of said stacking tube, said valve means comprising vertically spaced upper and lower retractable blades disposed across said stacking tube, the distance between said blades corresponding to the predetermined food chip stack size, said valve means including a stacking tube loading position in which said upper blade is retracted and said lower blade is in a chip blocking position, and a container filling position in which said upper blade is in a chip blocking position and said lower blade is retracted.

6. The apparatus of claim 5 together with level detecting means for preventing retraction of said lower blade until the space between said upper and lower blades is filled with a stack of chips.

7. The apparatus of claim 5 together with means for vibrating food chips received by said stacking tube thereby decreasing the stability of said chips to stand on edge.

8. In a method for orienting and stacking rigid food chips from a source of randomly oriented chips in a cylindrical container, the steps of:

a. directing the randomly oriented chips into recesses of an inclined moving conveyor at the conveyor infeed end to translate the chips into continuous tandem alignment,

b. feeding the aligned chips from the conveyor into the top of an essentially upright cylindrical stacking tube disposed below the outlet end of said conveyor and gravitating said chips onto a lower retractable chip blocking blade across said stacking tube in a manner that said chips are permitted to form a vertical stack,

c. positioning the open end of an empty cylindrical container in an essentially upright position in a chip receiving station below said stacking tube, and

d. retracting said lower blade to permit a chip stack of predetermined size to gravitate into said container.

9. The method of claim 8 together with the step of:

e. vibrating the chips in said stacking tube to decrease the stability of said chips to stand on edge.

10. The method of claim 8 in which no more than two chips at a time are fed from said conveyor to said stacking tube.

11. The method of claim 8 in which said conveyor is inclined with its upper end adjacent the top of said stacking tube so that said chips travel upwardly on said conveyor and excess chips slide downwardly over the recesses on the conveyor under the influence of gravity to prevent chip loading at an excessive rate in said stacking tube.

12. The method of claim 11 together with the step of:

e. accelerating the chips from the top of said conveyor to said stacking tube by sliding the chips on an inclined chute therebetween thereby decreasing the stability of said chips to stand on edge on said blades.

13. In a method for orienting and stacking food chips from a source of randomly oriented chips in a cylindrical container, the steps of:

a. directing the randomly oriented chips into recesses of a moving conveyor at the conveyor infeed end to translate the chips into continuous tandem alignment,

b. feeding the aligned chips from the conveyor into the top of an essentially upright cylindrical stacking tube disposed below the outlet end of said conveyor, an associated upper retractable chip blocking blade being disposed across said stacking tube vertically spaced from a lower retractable chip blocking blade a distance corresponding to the predetermined food chip stack size,

c. gravitating said chips onto said lower retractable blade in a chip blocking position with said upper blade retracted in a manner that said chips are permitted to form a vertical stack,

d. positioning the open end of an empty cylindrical container in an essentially upright position in a chip receiving station below said stacking tube, and

e. filling said container with said predetermined chip stack by moving said upper blade into a chip blocking position and retracting said lower blade.