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

FIELD: textile, paper.

SUBSTANCE: fencing for the textile machine spindles contains a machine mounted on brackets on a spindle bar, a metal casing on the inner surface of which there is a vibration-absorbing layer made in the form of an elastic sheet vibration-absorbing material with an internal loss factor of not less than 0.2, or a composite material, or plastic, at that, the thickness of the vibro-absorbing layer placed on the slats is 2…4 times larger than the thickness of the slats, the spindles rotate from the belt drive and are fixed to the spindle beam through elasto-damping gaskets made of elastomer, and the ratio of their total rigidity to the flexural rigidity of the spindle beam lies in the optimal range of values: 0.01…0.1, and the metal casing is located in the zone of spindles along their row, is box-shaped and covers both sets of spindles of the machine, and The slats are placed on the casing on its inner side and on both sides, upper and lower, are covered with vibration-absorbing layers with sound-absorbing layers placed on them, while on the upper and lower planes of the casing, the technological holes Z₁ and Z₂ are drilled, the ratio of the total area F₁ of the technological holes to the total area of the casing F lies in the optimum range of values: F₁/F=0.1…0.4. According to the invention, the sound-absorbing element of the spindle fencing is made in the form of a rigid and perforated walls, between which there are two layers: a sound-reflecting layer adjacent to the rigid wall and an acoustic-absorbing layer adjacent to the perforated wall, the sound-reflecting material layer is made of a complex profile consisting of uniformly distributed hollow tetrahedra that allow to reflect the sound waves falling in all directions, and the perforated wall has the following perforation parameters: the hole diameter is 3÷7 mm, the perforation percentage is 10÷15%, and the holes can be made in the form of round, triangular, square, rectangular or diamond-shaped profile holes, while in the case of non-circular holes, the maximum diameter of the circle inscribed in the polygon should be considered as nominal diameter, and mineral wool on a basalt basis is used as a sound absorbing material, while the surface of fibrous sound absorbents is treated with porous paints that pass air or is covered with air-permeable fabrics or nonwovens.

EFFECT: better noise reduction.

2 cl, 3 dwg