Method and device for applying a preformed portioned malleable mass

Device for applying a preformed portioned malleable mass, comprising:

• a hollow space, provided with at least one closable exit;
• a piston that can be moved back and forth in at least a part of the hollow space with at least a directional component from and to the at least one closable exit and in a direction directed from and towards the at least one closable exit, said piston is movable in between at least:
• a retracted position in which the piston does not occupy the hollow space;
• and
• an ejected position in which the hollow space is fully occupied;
• a mass supply channel operably connected to the hollow space, and configured to deliver the preformed portioned malleable mass into said hollow space when said hollow space is not occupied by the piston,
• a valve for the closable exit which is movable between a closed position and an open position, configured to allow the preformed portioned malleable mass to exit the hollow space;
• a supply channel for air, under pressure, leading through the piston to a side of the piston facing the exit, for bringing the hollow space under air pressure, wherein
• the piston is spaced from the mass supply channel in the retracted position;
• and
• the piston in the ejected position is adjacent to the exit;
• and wherein the device comprises a controller configured for performing the following steps in sequence:
• a. Closing the valve and preventing the preformed portioned malleable mass from exiting the hollow space;
• b. Positioning the piston into the retracted position;
• c. Applying air, through the supply channel;
• d. Supplying a portion of malleable mass to the hollow space via the mass supply channel;
• e. Opening the valve and allowing the preformed portioned malleable mass to exit the hollow space;
• f. Moving the piston to the ejected position.