SU299374A1 - DEVICE FOR MANUFACTURING SHEETS FROM GLASS-PLASTIC - Google Patents

Description

A device for winding conical shells of pre-impregnated glass materials is known, in which the prevention of slipping of glass strands from the surface of the mandrel is achieved by using spring-loaded pressure rollers, which exert a local effect on the winded glass strands in the opposite direction of slipping. However, this device does not ensure the stability of glass fiber, which as a result of low rigidity between the rollers, slide in the direction of the smaller diameter of the mandrel.

In the proposed device for preventing creeping of the winding yarns or cords, the crimping element is designed as a coaxially positioned air chamber with respect to the mandrel and kinematically connected with it, the surface in contact with the mandrel is made of elastic material and forms a diaphragm corresponding to the configuration of the wound part of the product.

To ensure the translational movement of the mandrel in the direction of the chamber during their mutual synchronous rotation, the camera is connected with a nut fixed against longitudinal movement located on the section of the drive shaft of the mandrel having a screw cut.

For the purpose of mutual orientation of glass fiber And: drove in relation to the mandrel and the diaphragm, drove resiliently pressed through the roller to the pressure-free part of the glass mandrel

reeled glass fiber.

The drawing shows a diagram of the proposed device.

The device comprises a rigid mandrel 1 having a longitudinal groove under the sliding

spindle key 2, drive gear 3 with a fixed prismatic key, gear nut 4 and intermediate link 5, through which the rotation of the driven gear 6 is transmitted. At last, the pressure chamber is fixed for filling the required pressure with air.

The pressure chamber, in turn, consists of a shell 7, an elastic, but strong in the plane wall of the sealed diaphragm 8,

which is isolated from the binding agent by the fluoroplastic film, which, in view of the high anti-adhesive properties, prevents the adhesive from sticking. Sealing the chamber from the side of the gaps in the threaded

Connecting the lead screw 2 and the nut-pinion 4 is achieved by using a telescopic package made up of a set of glasses of 9 different diameters. Each glass has a groove under the sealing lip

The pa is equipped with a charging nipple with a check valve 11.

The pressure level in the pressure chamber is maintained by the air reducer 12.

The fiberglass 13 is oriented with respect to the mandrel / hinged carrier 14 of the spreading machine with its direction, the rollers 15.

In order to remove the friction of the carrier against the material of the mandrel and ensure its position due to the absence of friction of the glass yarn 13 about the diaphragm 5, the carrier 14 is provided with a roller 16.

The wall thickness and diameter of the polar opening of the shell are set at the start of winding by spacer ring 17.

When winding the casing, the mandrel /, fastened with the lead screw 2, receives a constant rotation through the slide pin and the longitudinal groove in the lead screw. Using intermediate link 5, this rotation is transmitted to the driven gear 6, on which the pressure chamber is attached. As a result of different angular velocities of the pinion gear 3 and the pinion nut 4 (from 5 sog), where Yu and 0) 2 are the angular velocities of rotation of the pinion gear 3 and the pinion nut 4, respectively, the mandrel performs forward movement in the direction of the pressure chamber with speed v . Since the diaphragm 8 formed in the air-balanced state corresponds to the profile of the shell being formed along its outer surface, as a result of the insertion of the mandrel into the chamber between the mandrel and diaphragm 8, a volume is formed that geometrically repeats the formation of the curvature. This volume is gradually filled with the impregnated binder directly during the winding process of the glass fiber 13.

The forces in the form of air pressure L applied to the diaphragm 8 are manifested as efforts to prevent slipping as a result of filling the volume and making contact between the glass rods 13 and the diaphragm 8.

As the pressure chamber volume decreases during the process of inserting the mandrel into it, excess air is vented by the air reducer 12 into the atmosphere.

The carrier 14 with the guide rollers / 5 is pressed against the surface of the mandrel during winding / with the help of glass fiber 13 incident on it.

Subject invention

Claims (3)

1. A device for making fiberglass shells by the winding method, comprising a rotatable mandrel in contact on its working surface with a crimping element, and a material stacker with a mechanism for moving it in a direction relative to the mandrel, in order to prevent the winding threads from harnesses, crimping element made in the form of an air chamber coaxially located with respect to the mandrel and kinematically connected with it air chamber, in contact with the mandrel The sleeve is made of elastic material and forms a diaphragm, which corresponds to the configuration of the wound part of the product. 2. The device according to claim 1, characterized in that, in order to ensure the translational movement of the mandrel in the direction of the camera during their mutual synchronous rotation, the camera is connected with a nut fixed from the longitudinal movement located on the section of the drive shaft of the mandrel having a screw cut. 3. The device according to paragraphs. 1 and 2, characterized in that, for the purpose of mutual orientation of the glass yarn and the carrier with respect to the mandrel and the diaphragm, the carrier is elastically tucked through the roller to the part of the mandrel free from the glass strands by the pressure of the wound glass fibers.