SU1578013A1 - Arrangement for continuous orientation of tubular billet from polymeric materials - Google Patents

Abstract

The invention relates to the manufacture of products from polymeric materials and can be used in the manufacture of heat-shrinkable tubes of radiation and chemically modified materials. The purpose of the invention is to increase productivity and improve product quality. For this purpose, in the installation for continuous orientation of the tubular billet, the mechanism of the adjustable feed of the billet is equipped with two pairs of deflecting rollers mounted one above the other, each of which is made double on one axis, and the endless belt is tucked into deflecting rollers with the transition of one branch to another. In each pair, the diameter of one roller is smaller than the other, and the axes of the rollers are inclined in the horizontal plane by an angle of 3 to 10 ° in opposite directions relative to the perpendicular to the direction of movement of the tube. The coil of the tube blank is installed on the discharge device 1, one end of the tube blank is fixed at the overpressure fitting, and the second end is fed between the deflecting rollers 11, 12 to the guide cones 4 and 5, in which the upper and lower branches of the endless belt 7 takes the form of the blown head 6 caliber. With further advancement, the tube blank, carried away by the upper and lower branches of the belt 7, enters the heated caliber, where under the influence of the temperature field of the caliber (200-250 ° C) it warms up o plastic state, and a cooled caliber, where, under the action of an overpressure, the workpiece is transversely oriented to the size of the cooled caliber and fixed. After exiting the blow-off head 6, the tube 4 is fed to the receiving device 3. 4 Il.

Description

The invention relates to the manufacture of polymeric materials, which could be used in the manufacture of thermal pipes and radiation, both chemically and radiation:

Orientation is carried out in a highly ICST state of A5 ai Tiei temperature: softening (g avpeni), when Pts have a higher 1 st way to accumulate processing & A formation.

The purpose of SIDC is to ensure that it is worthwhile and better to: -, gssr izd: chy.

La figs, 1 shows a mustache, oru view of Hf figs. pqapir A-A nc FIG. S J in FIG. 3 is a view of FIG. 1 in FIG. i - kp In kg FIG. I,

The device consists of a h with i dd &; op cr уг u - tyuystvo 1 dp ussiyovg billet, node 2 and a szchva i-pieiemnoe device 3 for i gotoi oooki.

Node 2 is blown up with the driver: i and a flow rate e 4; cone 4 5, rzzduvo4nuyu tols k u 6 with ob01 repaev and okhtzdarim kchlibrahn f f mechanism psr, pedals zastovcht- about C & hey 7. Cone 4 and 5 no. fr. Form h y: h nth h is fixed on the 1 st with a relative circle with a length of 1 to pass through the lenga 7,

The feeder feed mechanism. -Dresses the pulleys. 8 overheads are driven by the entire military assembly of the rim of the electric drive unit (not on &

nh (igkiva occurs counter-clockwise, a sygnal of eccentric wheels (not from)) the upper pulley is connected to the lower DIKHBOM 8, rotated on a clockwise stpe / ke, gritsch-free frequency 8 times equal to the frequency of the upper , infinite — h 7 bends around pulleys 8. To increase ha, an infinite band 7 and -kimtitsn to pulleys 8 spring-loaded fjn tpihimglmyi rollers 9. Tape 7 TGOHDRDr top right jerk 0, upward-deflecting roller H of larger diameter, lower slope yy li li smaller diameter, vdus cones 4 to 5, razduvochnuyu cooking 6, bypass neither Nij pulley 8 and lower ichy bA 1rchal 5TSKY roller 1 is 0, the bottom

the deflecting tolerance 12 of a larger diameter, the upper crush roller 12 of a smaller diameter / then again between co-hycavn 5E 4. the blow head 6 and about: the upper head pulley 8.

The deflecting Yulikas H, 12 are double-walled on each axis with the possibility of rotation in different directions. h top ogi pauy rollers 12, raz- - “shcheiigsh gteva, located roller

ai o, iame oa, and a la the lower axis - pc t l botszhaem i amrta-8 on the top of the other p 1p located roller i oopeshy diameters and on the bottom - jtT-ls 1 of smaller diameter and vice versa, O-clu “ian rollers i , 12 on -: ote: .s in the horizontal plane of cha / goal from 3 to 10 ° in the gO of 1 half-a-i ie f horon relative to the direction of movement of the tube blank, creating the necessary distance between the branches of the endless belt 7 for the passage of the blank tube with the possibility of transition of one branch of the tape n the contour of the other.

At an inclination angle of less than 3 °, a sufficient distance between the branches for the passage of the tube blank is not provided. When the angle of inclination is more than 10 °, the tape slides off the guide rollers 10, which is unacceptable.

The device works as follows.

The coil of the tube blank is installed on the delivery device 1, with one end of the tube blank being fixed on a fitting (not shown) creating an overpressure, and the other end is fed between the deflecting rollers 11, 12 to the guide cones 4 and 5, in which the upper and lower the branches of the endless belt 7 take the form of the gauge of the blowing head 6. With further advancement, the tube blank, carried away by the upper and lower branches of the belt 7, falls into a heated caliber, where under the action of the temperature field of the caliber (200-250 ° C) heating it to a ductile state, and a cooled caliber, where under the action of excess pressure, the workpiece is transversely oriented to the size of the cooled caliber and its fixation. After exiting the inflation head 6, the tube 13 is fed to a receiving device 3.

This embodiment of the device provides improved performance.

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compared with the prototype by eliminating the need to stop the device for reloading bobbins with feed ribbons. By eliminating the slippage of the tape relative to the tube, the longitudinal stretching of the workpiece is reduced, and consequently, the quality of the radially heat-shrinkable tubes that are used as insulation for tubular products is improved.

Claims (1)

Invention Formula A device for continuous orientation of a tubular billet of polymeric materials, contains more giving and receiving devices, a blowing unit including a cone guide, a blown head with heated and cooled gauges, an adjustable feed mechanism made in the form of an endless ribbon, tensioned through the cone guide to guide rollers and drive rollers, so that, in order to increase productivity and improve quality, the feed mechanism is equipped with two pairs of deflection rollers, mounted one on another, each of which is made double on one axis, and the infinite tape is directed at deflection rollers with a transition of one zetwi to another, and in each pair the diameter of one roller is smaller than the other, and the axes of the rollers are inclined in the horizontal plane by an angle of 3 10 ° in opposite directions relative to the perpendicular to the direction of movement of the tube. one duCS ten SHU2.4