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Belvac Model 595VS Vision Inspection System

As part of Belvac's continuing evolution of the 595K/SK Modular Necking System, automated, on-line inspection of the inside of beverage cans at production speeds is now a reality with the 595VS Vision Inspection System. In a joint development project between Belvac and Pressco Technology, the 595VS Vision Inspection System combines Pressco's proven Interrogator Vision Inspection technology and Belvac's revolutionary Modular Necking System.

Belvac's Intelligent Modular System (IMS), the 595VS Vision System and 595LT Light Tester, all bolt together, along with necking, flanging, base reforming and base reprofiling modules, for one continuous operation. This modular design eliminates the need, and associated cost of additional mass conveying, single filing, inter-connecting air track work, discharge elevators, and plant space requirements. The controlled can transportation throughout the entire process preserves can quality, reducing can spoilage.

Video cameras in the 595VS Vision Inspection System exceed industry specifications to provide full computer integration, as well as high-speed asynchronous image acquisition. The Interrogator Vision System is able to inspect the following zones and the associated defects in those zones:

  • Unsprayed cans
  • Partially sprayed cans
  • Dents
  • Deco (from mandrel)
  • Coating drips
  • Coating drapes
  • Die or draw marks
  • Oil or grease
  • Dirt or other foreign material
  • Stains
  • Gross cracks in dome
  • Metal whiskers on side-wall

Belvac Model 595LT Light Tester

LYNCHBURG, VA--Automated, on-line inspection of beverage cans at production speeds is a reality with Belvac's new 595LT Light Tester. This system can be installed on an open turret of a Belvac fixed base machine or bolted to the Belvac Modular System, all without the need for expensive connecting trackwork, elevators, additional accumulation conveyors, line control or wasted floor space.

The 595LT Light Tester minimizes installation and platform costs, and controls the can's transportation throughout the entire process. This reduced "can handling" as compared to that of interconnecting trackwork and conveyors, preserves can quality and reduces spoilage.

The Belvac 595LT Light Tester uses proven SENCON technology to provide high speed light inspection of cans during the necking process. Light inspection is accomplished by positioning the can on a rubber seal on the turret and injecting air into the can. This forms a seal around the flange to eliminate ambient light and expands the can to reveal defects that may have been covered by varnish. The rubber seals can be easily reversed for extended life. Quartz halogen bulbs shine light on the can and a solid state sensor is used to detect leaks. Eight lights are used, which are easily accessible for quick replacement.

Rejection rates of 100% have been achieved on cans with 0.002 inch (0.0508 mm) pin holes and split flanges. Rejection of cans is provided by an air jet on the can guide. This eliminates mechanical reject devices, which have been a source of high maintenance and missed rejects on older systems.

A unique test mode has been incorporated into the 595LT to allow testing and calibration while the machine is running and without the need for expensive industry-standard calibrated cans. The Initiate Test Cycle, which is performed from the 595LT control panel, begins a brief sequence of events, including slowing the machine and stopping the flow of cans, to test the integrity of the light sensing head. A void of approximately 12 cans is created within the machine and electrically tracked through to the test area. A test shutter, which has a built-in 0.002 inch (0.0508 mm) calibrated pin hole, moves to its closed position to simulate that the "test cans"; are present and then performs a system check of the sensing head. If the test fails, the machine is stopped. If the test is successful, the machine immediately returns to its normal speed and the flow of cans resumes.

Patent Awarded to Belvac #7,464,573

7/07/09

Lynchburg, Va., July 7, 2009 -- Belvac Production Machinery, Inc., A Dover Company (NYSE-DOV), and a leader in 2 piece can machinery manufacturing, has been awarded a new United States patent for their Can Manufacturing Apparatus on the various can forming machine products. The new patent is U.S. #7,497,145, is for Pre-Loaded Cam Follower Arrangement.

Defined by the patent abstracts as: ” A cam follow arrangement has a rectangular-shaped through hole formed in an end portion of a ram member, the through hole having first and second opposed ends and a pair of parallel sides. A slider which is disposed in the rectangular-shaped through hole is configured to be slidable back and forth along the parallel sides toward and away the first and second ends. A spring is disposed between the slider and the first end of the rectangular-shaped through hole to bias the slider toward the second end of the rectangular-shaped through hole.”