Conveyor system that senses and separates product

• US 10,280,009 B2
• Filed: 03/02/2018
• Issued: 05/07/2019
• Est. Priority Date: 03/02/2017
• Status: Active Grant

• Current Assignee: Walmart Apollo, LLC (WalMart Inc.)
• Original Assignee: Walmart Apollo, LLC (WalMart Inc.)
• Inventors: Taylor, Robert James, Bellar, Jason, Crecelius, John, Propes, William M., Alexander, Matthew David
• Primary Examiner(s): Bidwell, James R
• Application Number:
  US15/910,168
• Publication Number:
  US 20180251318A1
• Time in Patent Office: 431 Days
• Field of Search: 1984601, 1988601
• CPC Class Codes: B65G 13/04 all rollers driven
• CPC Class Codes: B65G 13/11 Roller frames
• CPC Class Codes: B65G 2201/025 Boxes
• CPC Class Codes: B65G 2203/0233 Position of the article
• CPC Class Codes: B65G 2203/041 Camera
• CPC Class Codes: B65G 2203/042 Sensors
• CPC Class Codes: B65G 2203/044 Optical
• CPC Class Codes: B65G 41/008 frames mounted on wheels or caterpillar for movement on rail tracks B65G41/02
• CPC Class Codes: B65G 43/08 Control devices operated by article or material being fed, conveyed or discharged and controlling the discharging devices B65G47/42
• CPC Class Codes: B65G 47/28 during transit by a single conveyor

Abstract

Embodiments of a conveyor system for separating cases of product are disclosed. An elongated, substantially horizontal frame extends from an entry point to an exit point and has a plurality of linear zones. A plurality of motivators is arranged along the frame, such that a case placed on one or more motivators will be moved forward toward the exit point by a coordinated movement of the motivators. A plurality of case sensors arranged along the frame detects the presence of one or more cases within each of the linear zones, and a controller activates the motivators such that a minimum time period elapses between cases delivered to the exit point. The system can include an AC/DC power supply configured to receive 110-120V alternating current power at 60 Hz and to provide direct current power to the controller, the plurality of case sensors, and the plurality of individually-controllable motivators.

Claims

1. A conveyor system for separating cases of product, the system comprising:

an elongated, substantially horizontal frame extending from an entry point to an exit point and having a plurality of linear zones, one of the plurality of linear zones being adjacent to the exit point and being an exit zone;

a plurality of individually-controllable motivators arranged along the frame, such that a case placed on one or more motivators will be moved forward towards the exit point by a coordinated movement of the one or more motivators;

a plurality of case sensors arranged along the frame to detect the presence of one or more cases within each of the linear zones; and

a controller mounted to the frame and operably coupled to each of the plurality of case sensors and each of the plurality of motivators and configured to;

activate the motivators in the exit zone to move a case in the exit zone forward to the exit point if a minimum time period has elapsed since a previous case was moved to the exit point, and

activate the motivators in each one of the plurality of linear zones that is not the exit zone to move a case in the zone forward to a next zone closer to the exit point if no case is present in the next zone closer to the exit point.

2. The system of claim 1, wherein the plurality of case sensors is selected from the group including:

visible light cameras, photoelectric sensors, and pressure sensors.

3. The system of claim 1, wherein each of the plurality of individually-controllable motivators comprises an o-ring driven roller operably coupled to a 24-volt direct current (DC) motor.

4. The system of claim 1, further comprising an AC/DC power supply configured to receive 120V alternating current power at 60 Hz and to provide direct current power to the controller, the plurality of case sensors, and the plurality of individually-controllable motivators.

5. The system of claim 1, wherein the plurality of case sensors is operably coupled to the controller via a connection selected from the group including:

a wired connection and a wireless connection.

6. The system of claim 1, wherein the plurality of individually-controllable motivators is operably coupled to the controller via a connection selected from the group including:

a wired connection and a wireless connection.

7. The system of claim 1, wherein each of the linear zones is between about 25 and about 35 inches long.

8. The system of claim 7, wherein the controller is further configured to treat the motivators in adjacent zones as a single zone when the presence of a case that is longer than an individual zone is detected.

9. The system of claim 1, wherein the minimum time period is three seconds.

10. The system of claim 1, further comprising a configuration interface enabling an operator to select the minimum time period.

11. The system of claim 1, further comprising a start/stop button.

12. The system of claim 1, further comprising casters mounted to the frame such that the frame can be rolled on the casters from one location to another.