Method and device to seize the end of a roving or sliver and move it to a predetermined position
OwnerEnzo Scagliainventor
Life of this patent
Estimating the term…
Abstract
A method and device to seize the end of a roving, yarn or the like from a cop and carry it to a predetermined position envisages the use of an elongated hollow body wherein several ducts for feeding air or other gas are housed. The mouth of the hollow body is positioned near the end of the roving on the cop, the latter is detached and raised from the cop and subsequently sucked and/or pushed along said hollow body by means of one or more blowing and/or sucking jets. Finally, the hollow body opens to free the roving and is then removed.
Claims16
A method of seizing and moving the end of a roving from a rotating cylindrical cop, said method comprising:
- a. positioning an elongate hollow member having a large opening and an elongate chamber against a side of the rotating cylindrical cop in such a manner that the large opening matches the side of the rotating cop and covers a large portion thereof, and so that the elongate chamber is transverse to the axis of the rotating cop, wherein the arrangement of the large opening with the side of the rotating cop allows air to be entrained into the hollow member;
- b. detaching the end of the roving from the rotating cylindrical cop so that the end of the roving is in the mouth of the elongate hollow member;
- c. supplying at least a first stream of air or other gas into the elongate hollow member in a direction away from the cop so that the end of the roving is entrained through the elongate chamber of the elongate hollow member;
- and
- d. opening said elongate hollow member along its length whereby said elongate hollow member can be moved without interfering with the unwinding of the yarn from the cop.
An apparatus for seizing and moving the end of a roving from a rotatable cylindrical cop, said apparatus comprising:
- a. an elongate member having a first end, a second end, and an elongate chamber extending from said first end to said second end, said first end having a large mouth which is constructed and arranged to radially communicate with a side of the cop and cover a large portion thereof, such that when said elongate member is so arranged, said elongate chamber is transverse to the axis of the cop, wherein when said large mouth is in radial communication with a cop, air can be entrained into said elongate chamber;
- b. detachment means for detaching the end of the roving from the cop so that the end of the rovings is in said chamber;
- and
- c. at least one air supply duct in communication with said chamber, said at least one air supply duct being adapted to supply a stream of air or other gas into said chamber in a direction away from the cop, whereby the end of the roving will be entrained through said chamber to a predetermined position so that the yarn can be unwound from the cop as needed.
Dependencies are inferred from the claim text.