The invention provides a dual-centre
bobbin yarn unwinding device, and belongs to the technical field of
textile machines. The dual-centre
bobbin yarn unwinding device comprises a left centre assemblyand a right centre
assembly, a left movement base of the left centre
assembly is arranged in a left sliding groove of a bearing support through a left sliding column in a left-and-right sliding manner, a right movement base of the right centre
assembly is arranged in a right sliding groove of the bearing support through a right sliding column in a left-and-right sliding manner, a
piston of a driving assembly is arranged in a
piston cavity in the right sliding column of the right movement base in a left-and-right sliding manner, a left connector is arranged on the left side of the
piston rod,an air inlet groove is connected to the left connector, a
gas exchange hole is led to a left cavity, a right connector is led to a right cavity, a compressor is sequentially connected with a gas storing tank, an
oil mist separating device and one end of a reducing valve, the other end of the reducing valve is connected with a first
valve opening of a two-position three-way
reversing valve, a second
valve opening is connected with the left connector, and a third
valve opening is connected with a right connector. By means of dual-centre
bobbin yarn unwinding device, continuous bobbin yarn unwinding is achieved, the bobbin rotating stability is good, and bobbin installing and demounting are very convenient.