CS258707B1 - Shaping device for texturing fiber by gaseous medium compression - Google Patents

Abstract

The solution relates to a shaping device for texturing fibers by pressing with a gaseous medium, in which the degree of shaping can be continuously adjusted. The device consists of a shaping nozzle formed by a shaping nozzle opening into a diffuser and a pressing chamber formed by lamellas arranged in a rosette, the lower part of which is adjustable in the radial direction by means of a stop sleeve with a conical surface for the contact of the beads and an axially adjustable member. This allows the taper of the cavity and thus the shaping efficiency to be continuously changed.

Description

258707 3

The solution relates to the forming device for texturing the fiber by pressing through the gaseous medium by means of a construction permitting a continuous adjustment of the forming stage. A number of processes and associated devices are known, the purpose of which is to modify the fiber-textured texturing. The purpose of texturing is to give the fiber suitable properties - obje-movcst for its use and processing in textile. industry.

Among the significant texturing processes are the forming methods by pressing through the gaseous medium. The principle of this process consists in feeding the fiber ejection coalescing medium into a certain space, due to suitable conditions for forming the fiber in the form of a still-restoring plug in which the fiber is mechanically deformed, the deformation is fixed and transported in this state next operation. A device allowing such a procedure is called a forming chamber. Of the relatively large number of shaping chambers, only many solutions are used on an industrial scale, the common feature of which is to contain two principally shaping processes: a forming nozzle and an anvil chamber. Both of these nodes offer a relatively wide variability to construct them, and from the combinations it is possible to create chambers of relatively different properties, suitable for textured certain types of fibers or chambers of a more versatile nature. For example, devices are known whose forming nozzle is formed by a nozzle and a diffuser to facilitate threading. filament, in its axial direction, displaceable with one another, and a non-changeable design, or a device with special shaping properties, and a pressurizing chamber formed with the constitution of the lamellae arranged in an unchangeable geometric shape . However, some of the devices contain elements that allow their properties to be modified and adapted to the fiber needs.

Accordingly, it is mainly the possibility of changing the texturing efficiency of the forming nozzle, for example, by changing the nozzle dimensions and changing the conicity of the compression chamber by, for example, replacing it. A common disadvantage of these solutions is the fact that neither of the parameters can be varied continuously and in the course of the shaping process, but only by a one-time act before the start of texturing and according to a previously validated prescription for each fiber type. This makes it difficult to start new types of fiber and demands the stability of the texturing process and the quality of the processed fiber.

The aforementioned drawback removes the proposed design of the molding device by allowing the two significant parameters of the molding process, the texturing efficiency of the molding nozzle and the conicity of the molding chamber to be varied continuously and during the molding process. The molding device in question is formed by a forming nozzle and a pressurized cortex subsequent to the base body 3 of the chamber being placed one behind the other. The shaping die consists of a diffuser 4 and a shaping nozzle 1 disposed in an axial direction so as to be able to vary the flow through the nozzle. The compression chamber is formed by spikes into the rosette arranged lamellae 5, in their upper part mounted on the nozzle 1.2 and in their lower part adjustable, so as to be able to move radially and thereby change the geometry of the compression chamber.

In the accompanying drawing, there is shown a forming device according to the invention in its longitudinal section, the adjustable elements of which are in the lava and half-section drawn in their extreme positions.

The forming device consists of a forming nozzle 1, by means of a thread Z, adjustable in the base body 3 comprising a diffuser 4 which forms a forming nozzle with the shaping nozzle 1.

The compression chamber consists of a set of lamellae 5, in order to ensure their mutual positioning in the rosette body 6, so that the lamellae 7 form a cavity 8. The rosette body B is fixed in the base body 3 by means of a nut 9. Shape of the cavity 8 can be changed by radial displacement of the lamellae 5 is defined by its upper and lower cross-sections. and arresting the lamellar tips 7 on the projection of the forming nozzle 12. [0007] The fine voids P is determined by pressing the back portions of the lamellae 5 onto the balls 13 supporting the cone surface 14 of the stop sleeve 15, which pressurizes the outlet member 15 by its action on the bottom lamella 17. The stop sleeve 15, as an outlet member 16, is provided with a rosette thread 18a and a sleeve thread 19 to provide an opposing axial displacement thereof.

The change in the texturing efficiency of the forming die is achieved according to the present invention by turning the forming nozzle 1. As a result of this and the action of the thread, its axial displacement occurs, thereby changing the determining parameter of the texturing efficiency, the flow cross section of the die.

The change in the conicity of the compression chamber is achieved by changing the cross-section of the lamella hollow cavity by rotating the stop sleeve to simultaneously hold the outlet member 16 and the rosette thread 18 and the socket thread 19 to achieve intersectional axial displacement of the two components , as a result of which the movement of the spherical surface 14 results in

Claims (1)

258707 5, 13 in the radial direction and thus also to change the lower cross section of the cavity 8. The present forming apparatus operates in the following manner: The gaseous working medium, predominantly the pressure preheated air to the higher temperature supplied to the forming nozzle produces the most ejector effect which is applied by the fiber pulls it away from the node of the former forming process and throws it into the cavity8 of the compression chamber. Here. the fiber is the influence of the air-expulsion on the lamellae 7 where the friction causes the movement of the fiber to brake until it hits the fiber plug. There is a mechanical deformation of the individual fibrils of the filament, and the effective forces on the stopper of the stopper as well as the stopper forces of the brakes are achieved both by the required intensity of the stopping of the stopper and by its regular transport through the cavities 3 and through the exit member 18 to the next operation. Obviously, it is advantageous to have the possibility of influencing the aforementioned forces, which makes it possible for the forces of the stopper as well as the stopper force to be braked. The forces on the stopper, predominantly represented by the change in the momentum of the fiber and the air and the value of the air pressure in the chamber, are influenced by changing the flow cross section of the forming nozzle, both during and during the forming process. the efficiency of the forming nozzle due to its ejection effect, the amount of air consumed and the degree of explosion and air at the entrance to the pressurizing chamber. The force of the stopper braking predominantly represented by the frictional effect of the fiber on the lamella tips 7 is thus determined by the normalization of the stopping intensity of the stopper, the corresponding value of the fiber friction coefficient and the conicity of the cavity 8 of the compression chamber. The solution of the pusher chamber in question allows this stock to be varied continuously and during the molding process by varying the size of the lower section of the cavity 8. The texturizing device of the fiber by means of gaseous metallization of this solution has the advantage of that the subject change in the texturing efficiency of the forming nozzle and the change in conicity of the compression chamber make it possible to customize and optimize its properties for the fiber to be treated, in a fluid and variable manner during the forming process. This is of importance in changing the quality of the fiber, the conditions of the entire texturing process, changing the desired degree of shaping, but mainly changing the fiber coefficient, for example, by the preparation on the fiber or the dye, either surface or in the color fiber. Another use may be to extend the gypsum-form-forming process to those types of fibers that have not yet been mastered on an industrial scale. FORMING Texturing machine for fibers by extruding a gaseous medium consisting of a forming nozzle formed by an axially adjustable shaping nozzle tucking into the diffuser, under which a pressing chamber is formed by a set of slats in the upper part mounted on the molding nozzle in the base body. characterized in that the lower portion of the lamellae (5) housed in the rosette body (8) is by means of a stopper sleeve (15) with a tapered surface (14) for engaging the spheres (13) and the axially extensible outlet member (16). adjustable in radial direction. 1 sheet of drawings