Disposables – Pipette tips, reaction tubes or cuvettes

Automation solution for in-vitro diagnostics

Millions of disposables – pipette tips, reaction tubes or cuvettes- are needed and used every day for analytical purposes in medical and pharmaceutical as well as in non-medical areas – a growing market with an enormous need for automation. Increasing demand increases the need for fully and semi-automated production solutions in the disposables industry. MA micro automation GmbH recently implemented another flexible pipette tip automation solution with an increased output rate for a global player.

Starting position

The tips were produced free fall by the customer on injection moulding machines and sold as bulk material to the end customer for analysis purposes. The scope of the project was to implement a flexible pipette tip automation solution for pipette tip production in which the tips packed in racks can be offered to the in-vitro diagnostics market. For this purpose, the individual pipette tips must be fed in a cycle time of less than 0.1 sec. per pipette tip of bulk material, separated, automatically inserted into racks and then packed.

Process flow

The operator manually fills the feeding device at two bunkers with tips in the form of bulk material. A vibrating movement transports the tips with a defined conveying speed and quantity into two round conveyors. During the entire feeding and separation process, the parts are ionised to counteract electrostatic charging. The round conveyors are multi-track and convey the pipette tips in two layers into the feed rails. There the pipette tips hang themselves independently on the collar by means of their part geometry and gravity. A linear conveying movement transports the pipette tips via the feed rails to the singling screen. The desired rack grid dimension is created with the singling screen. From there, the pipette tips are transferred fully automatically into the rack by a multi-gripper system via electromechanical linear handling. Prior to this, the automation separates the racks and feeds them to the insertion / transfer process.

The fully loaded rack is discharged from the machine, packed manually in a folding box and transferred to the automatic laser marking and packaging process. At the end of the process chain, the packed and wrapped racks are buffered on a storage line before they are manually packed into shipping cartons.

Plant characteristics

  • Feeding equipment consisting of two bunkers with round conveyors
  • Five-track longitudinal vibratory conveyor rail
  • Electromechanical Y-, Z-transformation handling
  • Integration of a CO2 marking laser & a fine film packaging machine

Technical Specifications

  • Dimensions (L x W x H): 10,200 mm x 3,500 mm x 2,500 mm
  • Clean room class: ISO Class 8
  • Handling time: 10 seconds per rack
  • Cycle time: 0.095 seconds per pipette tip
  • Technical availability: 99 % (proven by the customer for SAT acceptance)
  • OEE: 98 % (proven by the customer for SAT acceptance)
  • Scalability regarding pipette tip size
  • Product-adaptable grippers

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