Preparation method of high-temperature-resistant and impact-resistant UPVC pipe fitting

Abstract

The invention discloses a preparation method of a high-temperature-resistant and impact-resistant UPVC pipe fitting. The Vicat softening temperature of the prepared high-temperature-resistant and impact-resistant UPVC pipe fitting measured according to GB / T 8802-2001 is 105-113 DEG C, and the impact strength measured according to GB / T 19712-2005 is 38-43 KJ / m<2>. A semi-finished pipe fitting is put into a traction opening at one side of a traction box, the output shaft of a sixth motor drives traction belts to transmit through a commutator, the two traction belts drive the semi-finished pipe fitting to be pulled out from a traction opening in the other side and pulled to a position between two arc-shaped sleeves, the piston rod of a hydraulic cylinder pushes a cutting blade, and the cutting blade cuts the semi-finished pipe fitting, so the technical problems of failed automatic fixation and poor fixation effect of the pipe fitting after cutting in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of production of UPVC pipe fittings, in particular to a preparation method of high-temperature-resistant and impact-resistant UPVC pipe fittings. Background technique [0002] UPVC, also known as hard PVC, is an amorphous thermoplastic resin made of vinyl chloride monomer through polymerization reaction plus certain additives. In addition to using additives, it also adopts the method of blending and modifying with other resins, so that it has obvious practical value. [0003] The patent document (CN200910103516.8) discloses a UPVC pipe or pipe fitting and its preparation method. When the UPVC pipe reaches the optimum plasticizing temperature, it can reduce the temperature of forming by 5°C compared with the lead salt stabilizer. Rare earth The addition of the composite stabilizer strengthens the interaction between the materials in the system, significantly reduces product structural defects, improves the s...

AI Technical Summary

Problems solved by technology

The prepared high-temperature and impact-resistant UPVC pipe fittings have a Vicat softening temperature of 105-113°C measured according to GB / T 8802-2001, and an impact strength of 38-43KJ / m measured according to GB / T19712-2005 2 , to solve the technical problem that the UPVC pipe fittings are not resistant to high temperature and the impact strength is not high in the prior art; (2) by putting the semi-finished pipe fittings into the traction port on the upper side of the traction box, the output shaft of the sixth motor drives the traction belt through the commutator Transmission, two traction belts drive the semi-finished pipe fittings to be pulled out from the other side of the traction port, and pulled between the two arc-shaped sleeves, the hydraulic cylinder piston rod pushes the cutting blade, and the cutting blade cuts the semi-finished pipe fittings, which solves the problem in the prior art The technical problem that the pipe fittings cannot be fixed automatically after cutting, and the fixing effect is not good; (3) The pipe support is pushed upward by the piston rod of the second cylinder, and then the cut pipe is pushed to the first inner pipe sleeve and the second inner pipe sleeve Between them, the piston rod of the first cylinder pushes the translation plate, and the convex strips on both sides of the translation plate slide along the inner wall of the side frame, and then drive the second inner sleeve on the bearing seat to move towards the direction of the first inner sleeve, and the first inner sleeve Insert one end of the cut pipe and push the other end into the second inner sleeve. Through this setting, the grinding device can automatically clamp the cut pipe, the pipe support is lowered, and the output shaft of the second motor passes through the belt. The wheel set drives the first transmission roller to rotate, and the first transmission roller cooperates with the two second transmission rollers to drive the grinding belt to rotate. At the same time, the output shaft of the third motor drives the pipe to rotate through the first inner sleeve, and the output shaft of the first motor is driven and installed by the transmission belt. The plate moves horizontally, and the pulley at the bottom of the mounting plate rolls on the mounting rail at the same time, and the grinding belt grinds the pipe between the first inner pipe sleeve and the second inner pipe sleeve, which solves the difficulty of pipe fittings in the grinding process of the prior art grinding equipment Clamping, and the technical problem that the grinding effect is not good at the same time

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