Assembly for programmed controlled handling and transporting of boxes, containers or the like

• US 5,211,523 A
• Filed: 01/30/1991
• Issued: 05/18/1993
• Est. Priority Date: 05/22/1990
• Status: Expired due to Fees

• Current Assignee: Investronica SA
• Original Assignee: Investronica SA
• Inventors: Diaz Zorita, Fernando, Andrada Galan, Mario, Carlos Cristos, Juan
• Primary Examiner(s): Werner, Frank E.
• Application Number:
  US07/648,163
• Time in Patent Office: 839 Days
• Field of Search: 414/273, 414/274, 414/277, 414/280, 414/281, 414/282, 414/283, 414/222, 414/225, 414/226, 414/618, 414/619, 414/744.2, 414/744.3, 414/744.6, 414/744.7 , 414/744.8, 414/751, 414/752, 414/753, 901/1, 901/31, 901/38, 901/46, 901/47, 294/106, 294/115, 364/478, 180/167, 180/168
• US Class Current: 414/282
• CPC Class Codes: B60L 15/38 with automatic control
• CPC Class Codes: B60L 2200/42 Fork lift trucks
• CPC Class Codes: B60L 2260/32 Auto pilot mode
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 50/52 characterised by DC-motors
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B65G 1/1371 with data records
• CPC Class Codes: B66C 13/48 Automatic control of crane drives for producing a single or repeated working cycle; Programme control
• CPC Class Codes: B66F 9/063 Automatically guided
• CPC Class Codes: Y02P 90/60 Electric or hybrid propulsion means for production processes
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

An assembly for the controlled programmed handling of articles includes autoguided and robotized vehicles and a plurality of work stations and storage areas. There is a computer communication system between a host computer, the vehicles, and the work and storage areas. The vehicles have manipulator devices to move articles from the vehicle to the work stations and storage areas and vice versa. The work stations include a receiving area, a work area, and an output area with detector devices for detecting articles in each area and for communicating same to the computer. Each vehicle has a non-traction wheel and an encoder device communicating with the non-traction wheel for converting rotation of the non-traction wheel into distance travelled by the vehicle.

Claims

1. An assembly for programmed, controlled handling of articles in a work place having a floor comprising a host computer, a set of autoguided and robotized vehicles, a plurality of article receiving stations located on the floor of the work place including work stations and storage areas, and a communication system means for communicating between the host computer, the vehicles, and the article receiving stations;

an external article support means located at each article receiving station, each external article support means having a substantially flat and horizontal article support surface;

an on board article support means mounted on each vehicle, each on board article support means having a substantially flat and horizontal article support surface, each vehicle having a right and a left lateral side, and each vehicle having mounted thereon an on board computer for communication with the host computer;

manipulator means mounted on each vehicle for grasping an article positioned on the on board article support means, for transporting the grasped article to an article receiving station adjacent the vehicle, and for releasing the grasped article on the external article support means of the adjacent article receiving station, and vice versa, said article receiving station being adjacent either lateral side of said vehicle, wherein the flat and horizontal article support surface of the article receiving station adjacent the vehicle is at a different height from the floor of the work place than the flat and horizontal article support surface of the on board article support means of the vehicle;

at least one article receiving station being a work station having a receiving area for receiving an article from said manipulator means mounted on the vehicle, first means for communicating with the host computer mounted on said work station and for detecting an article deposited on said receiving area, a work area positioned in said work station adjacent said receiving area, second means for communicating with said host computer mounted on said work station and for detecting an article in the work area, an output area positioned in said work station adjacent said work area, third means for communicating with said host computer mounted on said work station and for detecting an article in the output area, said third means including means for reading an identification code affixed to an article.

2. A system to measure distance travelled by an autoguided vehicle in the assembly according to claim 1 comprising:

at least one non-traction wheel rotatably mounted on said vehicle for rotation on the floor of the work place, said non-traction wheel being rotatable responsive to movement of the vehicle along the floor;

encoder means mounted on said vehicle for communicating with said non-traction wheel for providing electronic pulses responsive to rotation of said non-traction wheel; and

means mounted on said vehicle communicating with said encoder means for translating said pulses into distance travelled by said vehicle along said floor.

3. A system to measure distance travelled by an autoguided vehicle in the assembly according to claim 1 comprising:

at least one non-traction wheel rotatably mounted on said vehicle for rotation on the floor of the work place, said non-traction wheel being rotatable responsive to movement of the vehicle along the floor;

a friction wheel rotatably mounted on said vehicle contacting said non-traction wheel, said friction wheel being rotatable responsive to rotation of said non-traction wheel;

encoder means mounted on said vehicle communicating with said friction wheel for providing electronic pulses responsive to rotation of said friction wheel;

means mounted on said vehicle communicating with said encoder means for translating said pulses into distance travelled by said vehicle along said floor.

4. An identification system for articles in the assembly according to claim 1 comprising:

reader means mounted on at least one work station for reading a code affixed to an article, said code comprising bright and dark areas, said reader means including infrared sensor means for identifying said bright and dark areas and means communicating with said sensor means for converting said sensed-bright and dark areas into binary code;

said code including six adjacent areas selectively bright and dark representing a binary number code and said code further including two additional adjacent areas next to said six adjacent areas, said two additional adjacent areas being selectively bright and dark areas and providing a redundancy code;

said code further including an identification area containing visual numerical identification corresponding to the binary number represented by the six adjacent areas;

said redundancy code two adjacent areas being selectively bright and dark to make odd a summation of respective three alternating areas of said six adjacent areas representing the binary number code;

said reading means operating to read said code by said code being present in front of said reading means whereby said reading means detects presence of the article having said code affixed thereon.

5. An autoguided and robotized vehicle for handling and transporting articles, said vehicle having a front end, a rear end, and a frame, said vehicle comprising:

a first set of shelves mounted on the front end of said vehicle and a second set of shelves mounted on the rear end of said vehicle, said first and second set of shelves being spaced apart thereby providing a free space therebetween;

manipulator means mounted on said vehicle and located in said free space between said first and second set of shelves, said manipulator means including;

two spaced apart vertically oriented columns, with each column having a top end and a bottom end, the bottom end of each column being mounted to the vehicle frame, and a beam connected to the top end of each column;

a three dimensional frame movably mounted on said columns for vertical movement along said columns, means for vertically moving said three dimensional frame along said columns;

a rotary arm hinged to said three dimensional frame for rotation about a vertical axis, said hinged rotary arm having a horizontally oriented longitudinal length, means for rotating said rotary arm about said vertical axis;

a horizontally oriented bar having a longitudinal length movably mounted in said rotary arm for longitudinal movement thereon;

a clamp assembly movably mounted on said longitudinally oriented bar for longitudinal movement thereon;

means for causing longitudinal movement of said longitudinal oriented bar and said clamp assembly;

said clamp assembly including means for lifting an article from a support without vertical movement of said three dimensional frame.

6. An autoguided and robotized vehicle according to claim 5 wherein said clamp assembly comprises:

a horizontally oriented stiff three dimensional frame mounted on said horizontally oriented bar;

a tilting frame mounted on said stiff three dimensional frame by two hinges for permitting vertical tilting of said tilting frame with respect to said stiff three dimensional frame;

a tilting bar mounted at a first location to said stiff three dimensional frame and at a second location to said tilting frame, said second location being at a distance from the first location, means for varying the distance between said first location and said second location thereby causing tilting of said tilting frame with respect to said stiff three dimensional frame;

two spaced apart symmetric longitudinal members having a first end, a second end, and an intermediate portion, with the first end of each symmetric longitudinal member being shaped to support the article being handled, each spaced apart symmetric longitudinal member being mounted at its intermediate portion to respective opposite sides of said tilting frame by a vertical hinge, two symmetric elongated bars, each having a first end and a second end, wherein the first end of each elongated bar is connected by a rounded joint to a respective second end of one of said symmetric longitudinal members and the second end of each elongated bar is connected by a rounded joint to said stiff three dimensional frame;

whereby when said tilting frame tilts vertically downward, said spaced apart symmetric longitudinal members tilt vertically downward and move horizontally away from one another, and when said tilting frame tilts vertically upward said spaced apart symmetric longitudinal members tilt vertically upward and move horizontally toward one another.