Patent ID: 7059105
Filing Date: 2006-06-13
Classification: B29C,B65B

Abstract:
1. A continuous wrapping machine for wrapping a magnetic powder in wrapping film, comprising: a rotatable measuring drum; a stationary magnetic screening plate; a rotatable sealing drum; a rotatable sealing device; and a stationary hopper containing the magnetic powder and disposed adjacent the measuring drum, the measuring drum having an outer cylindrical measuring drum surface with a plurality of measuring drum recesses formed therein with each measuring drum recess sized to receive measured amounts of the magnetic powder from the hopper as the measuring drum rotates, the measuring drum including measuring drum magnets arranged inside the measuring drum for magnetically retaining the measured amounts of the magnetic powder in the respective measuring drum recesses, the sealing drum being disposed adjacent the measuring drum and having an outer cylindrical sealing drum surface that receives a first continuous wrapping film from a first continuous wrapping film source, the sealing drum having a plurality of sealing drum recesses formed into the sealing drum surface with a respective sealing drum recess sized to receive the measured amounts of the magnetic powder from a corresponding measuring drum recess, the sealing drum including sealing drum magnets arranged inside the sealing drum, the measuring drum magnetic screening plate disposed internally of the measuring drum in a stationary state between the measuring drum magnets and the outer cylindrical measuring drum surface such that, as the measuring drum and the sealing drum simultaneously rotate, the measuring drum magnetic screening plate cuts off a measuring drum magnetic retaining force of the measuring drum magnets so that a sealing drum magnetic force of the sealing drum magnets attracts the measured amounts of the magnetic powder from the respective measuring drum recess and into an opposing sealing drum recess with a portion of the first continuous wrapping film disposed therein thereby transferring the measured amounts of the magnetic powder from the measuring drum directly to the sealing drum and retaining the magnetic powder and the portion of first continuous wrapping film in the respective sealing drum recesses, and the sealing device having a cylindrically-shaped sealing device outer surface that receives a second continuous wrapping film from a second continuous wrapping film source and applies the second continuous wrapping film onto exposed portions of first continuous wrapping film as the second continuous wrapping film is being conveyed while the sealing drum and the sealing device are simultaneously rotating, the sealing device operative for sealing the exposed portions of the first continuous wrapping film and the second continuous wrapping film together.