Jet-weaving machine, particularly an air jet-weaving machine, with a clamping device in the mixing tube
AssigneeLindauer Dornier Gesellschaft mbH
InventorsMarkus Gielen, Thomas Laukamp
Life of this patent
Estimating the term…
Abstract
A thread clamping device is provided for a jet weaving machine that has a main discharge nozzle (1) with a mixing tube (2) for inserting a weft thread (3) into a shed with a conveying fluid discharged from the main discharge nozzle. This clamping device is placed inside the mixing tube (2) in the area from which the weft thread exits, and has an actuator, which is situated outside of the mixing tube (2), and a lever connected to the actuator so that this lever is actuated by the actuator (6) to execute a tilting or pivoting motion whereby the weft thread is clamped between the lever and an abutment (9) in an opening of the mixing tube.
Claims26
A jet weaving machine comprising:
- a main blow nozzle adapted to blow a transport fluid and therewith insert a weft thread into a loom shed of said jet weaving machine, wherein said main blow nozzle comprises a mixing tube having an inlet end facing away from said loom shed, an outlet end facing toward said loom shed, a mixing tube passage extending from said inlet end to said outlet end, and a clamp opening that opens into said mixing tube passage closer to said outlet end than to said inlet end;
- a thread clamping abutment arranged bounding said mixing tube passage;
- and
- a thread clamping device comprising an actuator and a lever;
- wherein:
- said actuator is arranged outside of said mixing tube and comprises at least one elastomeric deformable chamber, which has an actuating medium port communicating into a void space defined within said chamber, and which is elastically deformable so as to undergo an elastic deformation when an actuating medium is supplied into and/or removed from said void space through said port,
- said lever is fastened to said actuator arid arranged so that, due to said elastic deformation of said elastomeric deformable chamber, said lever and said actuator together undergo a tilting or pivoting movement between a clamping position and a non-clamping position,
- in said clamping position, said lever extends through said clamp opening and is positioned to clamp the thread between said lever and said thread clamping abutment, and
- in said non-clamping position, said lever is positioned so as to leave a space and not clamp the thread between said lever and said thread clamping abutment.
A thread clamping device for a jet weaving machine, comprising:
- an actuator that is configured and adapted to be mounted outside on a mixing tube of a main weft insertion nozzle of the jet weaving machine, and that comprises at least one elastomeric deformable chamber defining a void space therein and having an actuating medium port communicating into said void space;
- and
- a thread clamping lever that is fastened to said actuator and that has a thread clamping surface at a free end thereof;
- wherein:
- said chamber is elastically deformable so as to undergo an elastic deformation when an actuating medium is supplied into and/or removed from said void space through said port, and
- said thread clamping lever is arranged and fastened to said actuator such that, due to said elastic deformation of said chamber, said lever and said actuator are adapted to together undergo a tilting or pivoting movement between a clamping position in which said thread clamping surface of said thread clamping lever is adapted to clamp a weft thread in the mixing tube, and a non-clamping position in which said thread clamping lever is adapted to release the weft thread.
A thread clamping arrangement for a jet weaving machine, comprising two thread clamping devices that are arranged back-to-back symmetrically relative to one another and that are connected together to form a modular unit, wherein each one of said thread clamping devices respectively comprises:
- an actuator that is configured and adapted to be mounted outside on a respective mixing tube of a respective main weft insertion nozzle of the jet weaving machine, and that comprises at least one elastomeric deformable chamber defining a void space therein and having an actuating medium port communicating into said void space;
- and
- a thread clamping lever that is fastened to said actuator and that has a thread clamping surface at a free end thereof;
- wherein:
- said chamber is elastically deformable so as to undergo an elastic deformation when an actuating medium is supplied into and/or removed from said void space through said port, and
- said thread clamping lever is arranged and fastened to said actuator such that, due to said elastic deformation of said chamber, said lever and said actuator are adapted to together undergo a tilting or pivoting movement between a clamping position in which said thread clamping surface of said thread clamping lever is adapted to clamp a weft thread in the mixing tube, and a non-clamping position in which said thread clamping lever is adapted to release the weft thread.
Dependencies are inferred from the claim text.