SU1123863A1 - Device for centrifugal forming of fiber-reinforced products from polymeric materials - Google Patents

Abstract

1. DEVICE FOR CENTRIFUGAL FORMATION FROM POLAND-1ER OF MATERIALS OF PRODUCTS. FIBER-REINFORCED, containing a heated form installed on the support rollers, a reciprocating multi-channel probe for the submission of cushioning with a roller, a reciprocating moving multi-channel probe for supplying cushioning with a roller, a reciprocatingly moving multi-channel probe for supplying cushions with a flat pattern, a positioning, and a section of the body, a positioning, and a section, a position, and a position, a position, and a position, and a section position, a position pattern, and a position pattern, a position, and a section position, a position pattern, and a position pattern, as well as, and a position pattern, and a section position pattern, and a section position pattern, a positioning pattern, and a section of the cushioned pattern, with a positioning pattern, and a cre- including a drum with a knife and a pinch roller in contact with it, characterized in that, in order to increase the reliability of the device due to the guaranteed capture of chopped fiber from the bar ana it is provided with a chamber for supplying compressed air, an outlet end which is coaxial with the probe conduit for supplying fibers, and a notch for :: ahoda drum working areas on the side surface of the chamber.

Description

2. A device according to claim 1, characterized in that inserts are installed on the output chamber; transverse configuration.

The sections of which correspond to the configuration of the working sections of the drum and the pressure roller placed in the chamber. .

The invention relates to devices intended for the manufacture of reinforced rotation bodies, which can be used in various industries in particular in the manufacture of chemical fibers. A device for centrifugal formation of fiber-reinforced products from polymeric materials, comprising a rotational & heatable form, mounted on support rollers, mounted with the possibility of reciprocating movement of a probe for feeding components into a mold. In this device, a resin is fed to the surface of the pitch through a spray probe, and then a cut staple is fed through the other tube with air. or 1J filament fiber. The disadvantage of this device is the introduction of its switchgear into the rotating form for each stage of the process, which increases the production time. Closest to the invention is a device for centrifugally molding fiber-reinforced products from polymeric materials, containing a heated form mounted on support rollers, a return-moving probe for feeding components with a nozzle at the end and a chipping head fixed at the other end, including a drum knives and contact roller 2J for knitting with it. For feeding the chopped fiber, the device is equipped with an ejector installed on the rear end of the call. The suction nozzle of the ejector is located perpendicular to the axis of the chipping drum and at the main roller. The operation of the device for centrifugal shaping of products reinforced with fibers has shown that the combination of the chopping head with the ejector has the following disadvantages. When chopping the fiber, the filaments of the bundle are scattered, which worsens their capture by the ejector. There is a sticking of individual filaments on the surface of the pressure roller and chipper drum. In order to obtain a high-pressure discharge in the suction inlet of the ejector, a considerable flow of compressed air is necessary. All this reduces the reliability of the device. The purpose of the invention is to increase the reliability of the device. The goal is achieved so that the device contains a heated form mounted on the support rollers, a reciprocating moving multi-channel probe for feeding components with a nozzle at the feed end and with a chipper head fixed at the other end, including a drum with knives and contactors The pressure roller with it is equipped with a chamber for supplying compressed air, the output end of which is located coaxially with the channel of the fiber feed probe, and on the side surface of the chamber there is a cutout for approaching their portion of the drum. At the exit section of the chamber, inserts are installed, the cross-sectional configuration of which corresponds to the configuration of the working sections of the drum and the pressure roll placed in the chamber. Such an embodiment of the device ensures that, after cutting, the fiber enters directly into the channel of the chamber, through which compressed air is transported to the probe, transporting chopped fiber. Compressed air moving in the channel of the chamber along the drum surface and pressure roller sections placed in the cut-out of the chambers reliably captures the chopped fiber and transports it through the probe to the inside of the mold, while tearing the air from the surfaces of the drum and the FIRST roller into individual chopped fiber filaments, preventing it sticking to them. Approximately the diameter of the channel to the gauge is 15 mm, the speed is up to 20 m / s. FIG. 1 shows a general view of the device; in fig. 2 is a sectional view of Ag-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 - section BB in FIG. 1; in fig. 5 is a view of D in FIG. 1. The device comprises - a housing 1 (Figs. 1-5), inside of which a mold 2 is placed, mounted on back rollers 3, one of which is driven. Form 2 is surrounded by a fixed electric heater 4 installed inside housing 1. To deliver components to a cavity of form 2, there is a multichannel probe 5 containing fittings 6-8 for supplying resin, hardener and air respectively. At the end of zone 5, a chipping head comprising a drum 9 with knives 10 for cutting reinforcing fiber located along its generator, a pressure roller 11 and a chamber 12 containing channel E and a cutout Z are rigidly fixed. Probe 5 is rigidly fixed on the Care 13; making reciprocating fasting movement. Inlet chamber 12 has a fitting 14 for supplying compressed air. FIG. 3 shows a drum 9 provided with knives. 10 are located along its generators, the pressure roller 11 and the chamber 12. In the channel E of the chamber 12, on the side of the compressed air supply 14, two liners 15 and 16 are fixedly mounted. The configuration of the transverse with the contribution 15 and 16 corresponds to the cross-section configuration of the drum parts 9 and a pinch roller 11 located in a cutout of the chamber 10. The axis of the channel E of the chamber 12 is parallel to the axis of the drum 12, the pinch roller 11 and the probe 5. The channel E of the chamber 12 is connected to the channel of the multichannel probe 5, through which the air transports the cut fiber inwardly with form. The drum 9 and the pressure roller 11 are made of the same length. The width of the cutout W camera 12 is equal to the length of the drum 9 or the pressure roller 11. The device operates as follows. Compressed air entering through fitting 14 passes through channel E of chamber 12, capturing chopped fiber supplied by drum 9 and pressure roller 11 to channel E, and directs it through channel of probe 5 to the inner surface of rotating form 2. Liners 15. and - 16 eliminates the air turbulence created by the end walls of the drum 9 and the pressure roller. IV placed in the cutout W of the chamber 12. Thus, all the fibers after cutting directly fall into the stream of compressed air. In this case, the latter breaks off individual feeds from the surface of the pressure roller 11 and the drum 9, which ensures the guaranteed reception and transportation of chopped fiber. At the same time, through the channels of the multichannel probe 5, two components are supplied to the surface of the rotating form that are necessary to obtain the product. After the required layer of material is applied to the form, it is cured at a temperature of 100 ° C, then the chisel is cooled together with the form, after which the product is removed from the mold. Then the cycle repeats. When using a prototype device for chopping of glass wool of the RBN-13-25504P brand with air pressure supplied to the ejector 5 aty, chopped fiber plugs are formed due to removal of the tow and filament sticking to the surface of the chopping drum and pressure roller. to the normal righteousness of those who processs.safe. Submission of cut harness directly into the jet of compressed air without the use of a suction

nozzle of the ejector, creating a vacuum of not more than 500 mm of water. allows you to securely grab and transport the cut cord to eliminate sticking from

efficient filaments on the surface

chipping drum and pressure roller, reduce compressed air consumption. When using the proposed device, the consumption of compressed

with a prototype vB 2-2.5 times. air can be reduced by comp

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Claims (2)

1. DEVICE FOR CENTRIFUGAL FORMING FROM POLYMERIC MATERIALS OF PRODUCTS. FIBERED REINFORCED, containing a heated mold mounted on support rollers, a multi-channel reciprocating probe for feeding components with an nozzle on the feeding end and with a hook securing to the other end of the drum knives! and a pinch roller in contact with it, characterized in that, in order to increase the reliability of the device due to the guaranteed capture of chopped fiber from the drum, it is equipped with a chamber for supplying compressed air, the output end of which is aligned with the channel of the probe for feeding fiber, and on the side the surface of the chamber is made a cutout for the entry sections of the drum. Fie. 1 2. The device according to π. 1, characterized in that on the output section of the camera is installed liners / '> transverse configuration. The cross-sections of which correspond to the configuration of the working sections of the drum and the pressure roller placed in the chamber. .