Vacuum Generation

UniGripper offers a broad range of vacuum generators, either ejectors that generate vacuum by compressed air and the venturi principle or electric blowers where vacuum generated by rotating a fan wheel with an electric motor.

Ejectors

UniGripper ejector housing with 4 ejector cartridges.

Ejectors are suitable for grippers where the need for high vacuum flow is not excessive. Ejectors are easy to integrate as only compressed air needs to be connected to the gripper.

UniGripper ejectors come in three housings allowing up to three, four and eight ejector cartridges to be installed respectively. The three- and four-slotted housings are tailored to fit for the UniGripper SMS 80 respective SMS 120 series. In addition, all three houses are used on Unigripper customized depending on needed vacuum flow. The number of housings and cartridges to use is application dependent and UniGriper analyses your application and utilizes UniGripper's vacuum technology to optimize number of cartridges and thus consumption of compressed air.

All UniGripper ejectors come in two versions, with or without integrated reversing function. With the reversing function included, an integrated cylinder can be used to close the ejector outlet and instead direct the compressed air into the gripper, resulting in a fast release of products and efficient of the UniGripper head.

Electric Blowers

Typical side channel blower

An electric blower, in most cases side-channel blowers, is the best and most energy-efficient alternative for larger grippers, and grippers in general that require high flows of vacuum. UniGripper supplies a broad range of blowers, which allows blowers of optimal size to be supplied for each project. A gripper system with a blower typically requires more integration than a gripper powered with ejectors. Good thing then that the UniGripper program includes all accessories to make also this task run easy:

  • Vacuum hoses
    • UniGripper supplies high-quality hoses tailored for use with vacuum applications. Vacuum hoses are available in a many diameters and are selected by the Unigripper team as part of the gripper offer.
  • Swivel joints
  • Swibot

    • Swivel joints for large diameters vacuum hoses are made in-house by UniGripper, to be mounted on the gripper or at other locations where the vacuum hose twists excessively. Swivel joints at the gripper comes in versions for both off- and on-center mounting. The swivel for on-center mounting is a swiveling robot adapter (referred to as a swibot) allowing 360 degree rotation of the gripper head without rotating the tool
  • Reversing valves
  • Reversing valve

    • Our reversing valves enables the vacuum hose between blower and gripper to be linked either to the inlet or outlet of the blower. When in the outlet position, the exhaust air from the blower goes through the gripper, creating both a quick release of products for faster cycle times and caters for efficient cleaning of the gripper head.
  • Distribution pipes
  • Distribution pipes

    • For gripping systems handling long narrow objects like wooden planks, several gripping units distributed on a frame is a common design. To facilitate distribution of vacuum generated by a blower, UniGripper supplies both Y connections and more advanced distribution pipes. Distribution pipes enables a clean and easy installation and can be equipped with e.g. slide valves to allow one or several grippers to be deactivated, e.g. when handling shorter objects.
  • Silencer cabinets
    • Silencer cabinets are available to enable low noise levels for a blower installation. The own-developed sound cabinets enable a compact installation and integrates functions such as a reversing valve for easiest possible installation.
  • And more…
    • In addition, clamps for mounting the vacuum hose along the robot arm are available on request, as well as e.g. mechanisms allowing automatic connection and disconnection of a gripper from the robot arm with a tool changer.