SU1388484A1 - Textile machine spindle guard - Google Patents

Abstract

The invention relates to the textile industry - to the guarding of the spindles of a textile machine and allows to increase the effectiveness of noise reduction. At the spindle of the machine, at the level of its spindles, along their row, a metal casing is fixed with a vibration-absorbing layer fixed on it, which is a gerlen, and a sound-absorbing layer placed on it, which is a vinipore. On the casing, along the rows of spindles, there are cantilever-mounted slats with a vibration-absorbing layer placed on their lower surface. The slats can be placed on the outside of the casing. When the slats are split inside the casing, a vibration-absorbing layer is placed on their upper surface. Both vibration-absorbing layers of each strip are covered with sound-absorbing layers. 5 hp f-ly, 4 ill. (Oh (L

Description

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FIELD OF THE INVENTION The invention relates to the textile industry and relates to a noise absorbing barrier of textile machines.

The purpose of the invention is to increase the effectiveness of noise reduction.

FIG. 1 shows the fence spindles, a cross-section; Fig. 2 is the same; Fig. 3 is a graph of noise reduction versus fencing thickness; Fig. 4 is a graph of the change in sound absorption coefficient in accordance with the change in thickness of the sound absorbing layer.

The guard of the spindles 1 of the textile machine contains a metal casing mounted by means of the brackets 2 on the spindle beam 3 of the machine

4, on the inner surface of which the vibration-absorbing layer is fixed

5, representing gerlen. (Fig. 1).

On the vibration-absorbing layer is placed sound-absorbing layer 6, which is a vinipore. The thickness of the metal layer is 1.5 times less than the thickness of the vibration-absorbing layer and 10 times less than the sound-absorbing layer.

It has been established that a compromise solution from an economic and acoustic point of view is the choice of a gerlen thickness of 3 mm and a vinipore of 20 mm with a mechanical casing thickness of 2 mm.

The metal casing is located in the area of the spindles along their row and has a cantilever bracket 7 mounted on it along the row of spindles with a vibration absorbing layer 8 placed on their lower surface. The slats are placed on the outside of the casing and can be used as shelves for installing packages The thickness of the slats is 2 times a less than the thickness of their vibration-absorbing layer 8.

The casing can be made box-shaped and cover both p and the machine spindles at once (FIG. 2). The slats 7 are placed on the casing from its inner side and from both sides (upper and lower) are covered with vibration-absorbing layers 9 with sound-absorbing layers placed on them. 10. The thickness of the vibration-absorbing layer 9 on the slats is 2 times the thickness of the vibration-absorbing layer 5 on the casing. Vibration-absorbing layer 9 also represents

It is a gerlen, and the sound-absorbing layer 9 is a vinipore, the thickness of which is equal to the thickness of the sound-absorbing layer 6 on the casing.

During the operation of the machine, the sound pressure energy generated by its spindles is absorbed by the sound-absorbing layer 6 of the barrier, and the vibration-absorbing layer 5 damps the vibrations of the thin metal casing, which is the source of acoustic vibration. A further reduction in noise is achieved by vibration absorption of the vibrations of the spindle beam 3 of the machine with the help of slats with layers placed on it. A decrease in the vibroacoustic activity of the spun beam occurs already when the elastic-elastic coating of both sides of the beam is gerlen, however, the damping effect increases with the removal of the vibration-absorbing layer from the neutral axis of the spindle beam during bending due to an increase in deformation. This effect is realized in this design of the fence by strips that provide spatial damping, the loss factor of which is 0.2 compared to 0.05 for conventional damping in the frequency range from 200 to 3000 Hz. The removal of the vibration-absorbing layer in the elastic-elastic layer from the neutral axis of the spun beam during bending causes an increase in the deformation of the casing and the slats, which leads to a decrease in the friction between the gerlin and the casing and the slats and contributes to the dissipation of the energy of vibro-radiation.

The stability of the elastic and viscous properties of gerlen determines the stability of its vibration-absorbing properties during the time of its operation, and the presence of nonwoven material in it helps to increase the efficiency of vibration absorption by it.

Claims (4)

 1. The fencing of the spindles of a textile machine, containing a metal casing mounted on the spindle of the machine at the level of its spindles along their row, a metal casing with a vibration-absorbing layer fixed on its inner surface and a sound-absorbing layer placed on it (O so that, in order to increase the noise reduction efficiency, the casing has a slat-mounted cantilever attached to it along p springs with a vibration-absorbing layer placed on their bottom surface, while the vibration-absorbing layer on the casing and slats is a gerlen, and the thickness of the metal casing is 1.5 times less than the thickness of the vibration-absorbing layer placed on it and 10 times less than the thickness of the sound-absorbing layer, 2. Fencing in accordance with claim 1, in respect of the fact that the slats are placed on the outside of the casing, 3. Fencing in accordance with claim 2, which is the fact that the thickness g) of the vibration-absorbing layer placed on the slats doubles the thickness of the slats. 4. The fence according to claim 1, about the fact that the casing is made box-shaped, and the slats are placed on the inside of the casing and have a vibration-absorbing layer placed on the upper surface in the form of a sheath and fixed on the vibration-absorbing layers sound absorbing layers. 5, the barrier according to claim 4, characterized in that the thickness of the vibration-absorbing layer on the slats is twice the thickness of the vibration-absorbing layer on the casing. . 6. Fencing on PP. 1-5, which is based on the fact that the sound-absorbing layer is made of venipore. five / 1 63 125 250 500 WOO 2000 000 8000 u, Hz Fi.. 3 100 mn50mp 500 1000 Compiled by N.Timofeeva I.Segl nick Tehred M.Hrdanić 2000 W 2000 WOO 8000 /, / i Corrector S.Cherni