Screwing caps onto bottles is a specialist job well fitted to the Tri-Torque Capping Head produced by Cap Coder.

The design of the Tri-Torque is based on the fact that if a cap can be screwed onto a bottle by hand, it follows that it can be done more efficiently and with less fatigue if done by a mechanism possessing hand-like attributes.

The Cap Coder Tri-Torque capping head has 3 rubber lined gripping fingers to grasp the cap. These can reach over a variety of cap shapes, as diverse as spray nozzles, before closing on the cap.

The added advantage of circumferential grip reduces cap distortion whilst the rubber grips eliminate damage even on highly reflective metallised surfaces.
As caps are normally unscrewed manually, the torque required to tighten caps onto bottles tends to be low.
This need demands that the capping head has low friction operation in order to allow accurate control to be applied. In addition, the torque applied by the servomotor is controlled for both torque and speed so that the reactionary mechanical effects can be reduced if required.
The head is available in basic form of motorised rotor with the 3-jaw grip mechanism ready for incorporation into an existing product handling system.
Alternatively, it can be supplied with an integrated linear transfer feature to facilitate engaging the cap. It also has a 3 position transfer mechanism for picking the cap before screwing it onto the bottle.
Finally, the twin swing head version comprises 2 Tri-Torque heads mounted on a centrally pivoted beam so that in operation one head picks a cap whilst the other screws its held cap onto the bottle.