CASING FOR TEXTILE MACHINE SPINDLES Russian patent published in 2017 - IPC D01H1/16 

FIELD: textile, paper.

SUBSTANCE: casing for the spindles of the textile machine is comprised of fencing mounted on the spindle tool bar of the machine at the level of its spindles and along them, with a sound-absorbing layer attached to its inner surface. The fencing consists of the upper and lower parts, each of which is a body made of sheet metal parts with an apex angle of 90°, rigidly secured to the spindle beam at its top and bottom, and a vertically extending removable lid. The thickness of the vibration-absorbing layer is 2…4 times the thickness of cover plates and the housing. The housing elements are mounted on the machine by means of rubber isolators, the overall rigidity of which is lower than the rigidity of the vibration-isolating suspension spindle grommet, absorbing elastic sheet material with internal loss ratio of not less than 0.2, or a composite material or compound can be used as vibration-absorbing material. According to the invention, the sound-absorbing element is designed as a rigid wall and a perforated wall, with two layers in between: the reflecting layer next to the rigid wall and the sound absorbing layer next to the perforated wall. A reflecting layer material is in the form of evenly distributed hollow tetrahedrons allowing to reflect sound waves from all directions, and the perforated wall has the following perforation parameters: hole diameter - 3÷7 mm, percentage of perforations 10%÷15%. Holes can be of round, triangular, square, rectangular or diamond shape. In case of non-circular holes the nominal size is regarded as the maximum diameter of the polygon that fits in a circle; the used sound-absorbing material is basalt-based mineral wool basis. The reflecting material of the sound-absorbing element of the body is made of aluminium alloys, subsequently filled with titanium hydride with the density of air within 0.5…0.9 kg/m³ with the following strength properties: compressive strength within 5…10 MPa, flexural strength in the range 10…20 MPa, such as foamed aluminium or sound insulating plate of glass staple fiber material with the density of 60÷80 kg/m³.

EFFECT: better noise reduction.

2 cl, 2 dwg