SU988929A1 - Apparatus for impregnating continuously moving textile material - Google Patents

Description

The invention relates to the production of pre-impregnated length laminar materials, in particular to the production of press material AG, 4HS. A device for the impregnation of a continuously moving material / containing a vertically positioned shaft of drying is known, having an impregnation bath with a water seal at the inlet, and a means for cooling the material installed in the course of the material movement and a cooling chamber exhaust air system associated with the chamber. and a shaft located above the latter in the air suction system, guide rollers for changing the direction of movement of the material and a vapor recovery unit, connected to the shaft. A disadvantage of the known device is the low productivity and the unreliable operation of the deflection rollers. In the manufacturing process of the press material AG-4NS, the tape is impregnated and dried, consisting of unidirectional non-twisted glass fibers, which have loops of broken filaments and collected in the form of lumps of fluff. The tape in the viecTe of the fiber defect after impregnation has an increased binder content, and these areas after the drying chamber come out without drying. Upon contact of the tape with the surface of the deflecting roller, the undried binder, under the action of the tension of the tape, is squeezed onto the roller and assembled in the form of a ring on it at the site of the edges of the material. Loops, dangling fibers and down, which, in turn, cause the material to be wound onto a deflecting roller, easily adhere to the ring-shaped accumulation of the binder on the roller surface. The ability to roll the material onto the roller is retained even if it is coated with fluoroplastic. The purpose of the invention is to increase equipment performance and increase reliability; The goal is achieved by the fact that a device for impregnating a continuously moving material, containing a vertically arranged drying tunnel, having an impregnating bath with a water seal at the inlet, and a means for cooling the material / cooling unit installed during the material movement, exhaust system

air connected to the chamber and the shaft, located above the latter in the air extraction system L1, directing the rollers to change the direction of movement of the material, and the vapor recovery unit connected to the shaft also have a liquid bath located under the head rollers, and the pressure rollers located in the latter, contact pairs that form with guide rollers; each pressure roller has a porous coating; each roller pair is kinematically connected to one another.

The rollers of each pair are kinematically connected to each other by means of a gear pair with a gear ratio not equal to one.

Figure 1 shows the device, a general view; 2 shows a side view of a system of deflection rollers in contact with additional rollers; on fig.Z - section along aa and in figure 2.

The device for impregnating the moving material 1 comprises a chamber 2 for pre-drying the non-impregnated material, a vertically arranged drying tunnel 3, having an impregnating bath 4 with a hydraulic seal at the inlet and a means for cooling the material at the outlet. In the course of movement of material 1 parallel to shaft 3 a cooling chamber is vertically installed, chamber 5 and exhaust air suction system associated with chambers 2 and 5 and shaft 3. Above shaft 3 in the air suction system on the frame b are located guide rollers 7 to change direction change; 1 price material. The rollers 7 are seated on the axis 8, and a vapor recovery unit 9 is connected to the shaft 3. Under the guide rollers 7 there is a bath for liquid 10, in which pressure rollers 12 are placed on the axes I, which form contact pairs with the guide rollers 7. The pinch rollers 12 have a porous coating 13, the rollers of each pair are kinematically connected to each other by means of a gear pair 14 and 15 with a gear ratio not equal to one. The axis 11 of the pressure rollers 12 are planted in the grooves and spring-loaded springs 16.

The device works as follows.

The material to be processed 1 passes the drying chamber 2, is impregnated with the binder in the impregnation bath 4, and after the drying shaft 3 enters the guide rollers 7, which guide material 1 into the cooling chamber 5. When the impregnated material 1 moves, the guide rollers 7

(under the influence of force from the material) rotate, from which rotation is transmitted to the gear pair 14 and 15 by the contact roller 12 in contact with them.

The porous coating 13 of the pressure rollers 12 absorbs liquid, for example, water from the bath 10 and creates, upon contact, a liquid film on the surface of the guide rollers 7, thereby preventing the binder from sticking. Different linear velocities of the surfaces of the rollers, obtained by the gear pair 14 and 15, cause the porous coating 13 of the pressure roller G2 to slip along the surface of the guide roller 1 and thereby ensure that the surface of the guide roller is constantly cleaned.

The contact of the rollers is provided by the springs 16.

The proposed device is reliable in operation and allows for improved performance.

Claims (2)

1. A device for impregnation of continuously moving material, containing a vertically located drying tunnel, having an impregnating bath with a water seal at the entrance, and a means for cooling the material, installed during the movement of the material, cooling chamber, exhaust air exhaust system associated with the chamber and the shaft, the guide rollers located above the last one in the air suction system for changing the direction of movement of the material and the vapor recovery unit connected to the shaft, are distinguished by the fact that In order to increase productivity and reliability, it has a liquid bath located under the guide rollers and pressure rollers placed in the latter, forming contact pairs with the guide rollers, each pressure roller having a porous coating, and each roller having a kinematic connection are one with the other. 2. The device according to claim 1, wherein the rollers of each pair are kinematically connected to each other by means of a gear pair with a gear ratio not equal to one, Sources of information taken into account in the examination 1. USSR author's certificate 685737, cl. D 06 B 21/02, 1978 (prototype). Adl