Process and device for the jigging of a flat can

A device for imparting a back-and-forth jigging motion to a flat can which is to be filled with a textile fiber sliver from a rotary plate which is stationary relative to said flat can, said device comprising:

• a jigging device, said jigging device further comprising a mechanism for holding a flat can relative said jigging device;
• a driving device operably configured with said jigging device so as to convey said jigging device and flat can in a back-and-forth jigging motion between two reversal points, said driving device further comprising a mechanism configured to impart a modified speed to said jigging device within a predetermined reversal area adjacent each said reversal point;
• and
• said driving device further comprising two belts alternately driven in opposite directions by belt pulleys which are alternately coupled to a common drive shaft, said belts being engageable with said jigging device.

A device for imparting a back-and-forth jigging motion to a flat can which is to be filled with a textile fiber sliver from a rotary plate which is stationary relative to said flat can, said device comprising:

• a jigging device, said jigging device further comprising a mechanism for holding a flat can relative said jigging device;
• a driving device operably configured with said jigging device so as to convey said jigging device and flat can in a back-and-forth jigging motion between two reversal points, said driving device further comprising a mechanism configured to impart a modified speed to said jigging device within a predetermined reversal area adjacent each said reversal point;
• and
• said driving device further comprising an endless belt driven around two deflection pulleys, said belt comprising a catch which runs over said deflection pulleys thus being driven in alternate directions between said deflection pulleys, said catch being releasably engaged with said jigging device between said reversal areas.

A device for imparting a back-and-forth jigging motion to a flat can which is to be filled with a textile fiber sliver from a rotary plate which is stationary relative to said flat can, said device comprising:

• a jigging device, said jigging device further comprising a mechanism for holding a flat can relative said jigging device;
• a driving device operably configured with said jigging device so as to convey said jigging device and flat can at a constant speed in a back-and-forth path defined between two reversal points, said driving device further comprising a mechanism configured to drive and decelerate said jigging device within a predetermined reversal area adjacent each said reversal point and to subsequently accelerate said jigging device to said constant speed within said reversal area;
• and
• sensors disposed at each said reversal area and configured to detect travel of said jigging device into and out of said respective reversal areas said sensors in operative communication with said driving device to trigger the deceleration and acceleration of said jigging device.

A device for imparting a back-and-forth jigging motion to a flat can which is to be filled with a textile fiber sliver from a rotary plate which is stationary relative to said flat can, said device comprising:

• a jigging device, said jigging device further comprising a mechanism for holding a flat can relative said jigging device;
• a driving device operably configured with said jigging device so as to convey said jigging device and flat can in a back-and-forth path defined between two reversal points, said driving device further comprising a mechanism configured to impart a modified speed to said jigging device within a predetermined reversal area adjacent each said reversal point;
• and
• wherein said jigging device comprises a bearing plate and a compression spring connected to said bearing plate, said compression spring having opposite ends configured as impact ends.

A device for imparting a back-and-forth jigging motion to a flat can which is to be filled with a textile fiber sliver from a rotary plate which is stationary relative to said flat can, said device comprising:

• a jigging device, said jigging device further comprising a mechanism for grasping said flat can;
• a driving device operably configured with said jigging device so as to convey said jigging device and flat can in a back-and-forth jigging motion between two reversal points, said driving device further comprising a mechanism configured to impart a modified speed to said jigging device within a predetermined reversal area adjacent each said reversal point;
• and
• wherein said mechanism for grasping said flat can comprising grasping cylinders having vertical swivelling graspers configured to grasp and hold said flat can in an area between its center and upper can rim.

A process for jigging a flat can, wherein a textile fiber sliver is deposited at a delivery speed in loops from a stationary rotary plate into the flat can, said process comprising:

• jigging the flat can at a relatively constant speed as a function of fiber sliver delivery speed in back and forth reversal paths of a traversing path between reversal points below the rotary plate so that loops of fiber sliver are laid into the flat can;
• at each reversal point and in the direction of travel of the flat can, decelerating the flat can from its constant jigging speed within a defined reversal areal before the reversal point to a zero speed at the reversal point, and accelerating the flat can from the zero speed at the reversal point up to the constant jigging speed in a defined reversal area after the reversal point, the reversal areas before and after the reversal point constituting a reversal path;
• and
• varying the length of the reversal path as a function of different fiber sliver delivery speeds thus maintaining the reversal time of the flat can in the reversal path relatively constant regardless of jigging speeds, the reversal time for the flat can in the reversal area thereby being changeable independent of the jigging speed of the flat can.