Yarn end finding apparatus

An apparatus for finding an end of a yarn wound on a spinning bobbin fitted uprightly on a tray, comprising:

• a cutter mechanism for releasing and cutting a yarn end on the bobbin,
• a yarn end pick-up mechanism located adjacent said cutter mechanism for picking up an end of the cut yarn from a layer of the yarn, and
• a yarn end inserting mechanism located adjacent said yarn end pick-up mechanism for cutting the yarn end picked up from the yarn layer to a predetermined length and for inserting the yarn into a center hole of the bobbin,
• wherein said cutter mechanism comprises:
• a suction case having an outer circumferential face,
• a rotary cutter having an outer circumferential face and mounted for rotation within the suction case,
• a fixed blade positioned to contact at least a portion of the outer circumferential face of the rotary cutter,
• a suction pipe in communication with the suction case for producing a suction air flow within the rotary cutter, and
• a motor for driving the rotary cutter with respect to the fixed blade.

An apparatus for finding an end of a yarn on a spinning bobbin fitted uprightly on a tray, comprising:

• a cutter mechanism for releasing and cutting a yarn end on the bobbin;
• a yarn end pick-up mechanism located adjacent said cutter mechanism for picking up an end of the cut yarn from a layer of the yarn,
• a yarn end inserting mechanism located adjacent said yarn end pick-up mechanism for cutting the yarn end picked up from the yarn layer to a predetermined length and for inserting the yarn end into a center hole of the bobbin, whereby the end of the yarn is found while the bobbin is held integrally on a tray,
• a rotary plate which is secured to a vertically extending first shaft, said rotary plate having a plurality of tray receiving grooves formed therein at a predetermined pitch along the outer periphery thereof, said cutter mechanism, said yarn end pick-up mechanism and said yarn end inserting mechanism being disposed about the outer periphery of said rotary plate,
• at least one guide plate having a guide face concentric with and spaced apart from the outer periphery of the rotary plate , said guide plate and said tray receiving grooves of said rotary plate forming a transporting path for said trays.

An apparatus for finding an end of a yarn on a spinning bobbin fitted uprightly on a tray, comprising:

• a cutter mechanism for releasing and cutting a yarn end on the bobbin,
• a yarn end pick-up mechanism located adjacent said cutter mechanism for picking up an end of the cut yarn from a layer of the yarn,
• a yarn end inserting mechanism located adjacent said yarn end pick-up mechanism for cutting the yarn end picked up from the yarn layer to a predetermined length and for inserting the yarn end into a center hole of the bobbin, whereby the end of the yarn is found while the bobbin is held integrally on a tray,
• a rotary plate which is secured to a vertically extending first shaft, said rotary plate having a plurality of tray receiving grooves formed therein at predetermined pitch along the outer periphery thereof, and a bobbin admitting station and a bobbin discharging station are further provided around the rotary plate, and
• a drive device for the rotary plate, said drive device comprising:
• a feed plate secured to an upper end portion of the first shaft secured to the rotary plate, said feed plate having notches formed along the periphery thereof in the same pitch as the tray receiving grooves of the rotary plate,
• a rocking bracket fitted for rocking motion on the first shaft,
• a first rod for rocking the rocking bracket connected to a first end of the rocking bracket, and
• a pin fitted on a hole formed at a second end of the rocking bracket, said pin being movable relative to the notches of the feed plate.