RU2135651C1 - Pile fabric forming apparatus - Google Patents

Abstract

FIELD: textile engineering. SUBSTANCE: apparatus has perforated drum, fixed tube positioned in perforated drum, compression roller, air channel and air flow distributing device having set of pipes. Pipes are arranged in axial alignment one with respect to another and to perforated drum and in symmetry with respect to central vertical surface of drum. Pipes are secured within fixed tube of condenser by means of stepped supporting plate. Apparatus may be used for manufacture of nonwoven fabrics. EFFECT: increased efficiency and improved quality of fabric by improved crosswise spreading of pile fabric. 2 dwg

Description

 The invention relates to textile machinery, in particular to the design of a condenser for textile machines, and can be used both for intermediate layer formation of fibrous webs in the process, and for the production of the final product, for example non-woven materials.

 A device for the formation of the canvas, containing a condenser adjacent to it the shaft of the duct, a sealing roller installed at the outlet of the formation zone [1]. The disadvantage of this device is the lack of uniformity of the fibrous flooring on the surface of the condenser over its entire width.

 As a prototype of a device for forming a fibrous flooring, a device for removing the webs on a carding machine is adopted, containing a removable roller, a chamber with an adjacent condenser equipped with means for regulating the air supply, which is made in the form of a disk condenser installed inside the mesh drum with cone-shaped mounted on it nozzles [2].

 However, the use of this device does not sufficiently equalize the suction of air across the width of the condenser, as a result of which the formed fibrous flooring is uneven in linear density along its width.

 The technical result of the claimed invention is to improve the quality of the resulting flooring by aligning the air flow across the width of the device.

 The specified technical result is achieved by the fact that in the device for forming a fibrous flooring containing a perforated drum with a fixed tube installed inside it, a sealing roller, a pneumatic channel, means for distributing the air flow, the latter is made in the form of a set of tubes placed between the coaxially perforated drum and among themselves, and also symmetrically with respect to the central vertical plane of the drum, while the tubes are fixed inside the stationary condenser pipe by means of a carrier her stepped profile plates.

 The use of coaxially placed tubes makes it possible to divide the main air flows passing through the ends of the mesh drum into a number of constituent annular flows, thereby organizing a uniform suction of air across the width of the drum, which makes it possible to obtain a uniform fiber deck on its surface.

In FIG. 1 presents a process diagram of the inventive device;
in FIG. 2 is a section AA in FIG. 1.

 A device for forming a fibrous flooring comprises a condenser 1, consisting of a perforated drum covered with a fine mesh, inside of which a means for distributing the air flow is mounted on a fixed pipe 2 with a slit 3 by means of a carrier plate 4 of a step profile. The latter is made in the form of a set of tubes 5 placed coaxially with a perforated drum and between themselves, and also symmetrically with respect to the central vertical plane of the drum, i.e. on both sides of it. From the side of the working body 6 of the machine there is a pneumatic chamber 7 for transporting the air-fibrous flow, and in the zone of formation of the fibrous flooring, a sealing roller 8 is installed.

 A device for forming a fibrous flooring works as follows.

 The fibrous product from the working body 6 due to the centrifugal force and air draft created by the fan (not shown in the drawing) is sent to the pneumatic chamber 7, passing through which settles on the mesh surface of the condenser 1, forming a fibrous layer on it by the addition of shreds, groups and individual fibers. The sealing roller 8 seals the formed fiber layer, which is subsequently removed from the mesh surface of the condenser 1. Using sets of coaxially arranged tubes 5, the end main suction air flows are divided into component flows concentric to the fixed tube, which ensure uniform air suction from the respective zones of the mesh drum by its width. The selection of the optimal parameters of the elements of the means for distributing the air flow (the number, length and diameter of the tubes) will enhance the effect of uniform air suction from all sections of the perforated condenser pipe along its width. Air, sucking through the mesh surface of the drum 1, passes through the slit 3 of the fixed pipe 2, a group of coaxially arranged pipes 5 and is discharged through the ends of the fixed pipe 2 through the air ducts to the filters, where it is dust free.

 A device for forming a fibrous flooring receives rotation from a machine drive.

 The proposed design allows to obtain canvas of improved quality by aligning the fibrous flooring across the width of the device.

Sources of information:
1. Kuleshov E.M., Kuleshov V.I. Aerodynamic canvas-forming machines and devices. - M.: Light Industry, 1976, p. 12.

 2. Copyright certificate of the USSR N 309076, D 01 G 15/46, 1971, BI N 22.

Claims (1)

 A device for forming a fibrous flooring containing a perforated drum with a fixed tube installed inside it, a sealing roller, a pneumatic channel and means for distributing the air flow, characterized in that the latter is made in the form of a set of tubes placed between the coaxially perforated drum and among themselves, and also symmetrically with respect to the central vertical plane of the drum, while the tubes are fixed inside the stationary condenser pipe through the carrier plate of a stepped profile .

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