A pvc pipe automatic shaping equipment

Abstract

The invention relates to a PVC pipe automatic shaping equipment, which comprises a base and a spray vacuum shaping box. The two ends of the spray vacuum shaping box are respectively provided with a material inlet and a material outlet. The spray vacuum shaping box is divided into sequentially connected Buffer cavity, quick cooling cavity and molding cavity, the base is equipped with a vacuum pump, the vacuum pump is connected with the buffer cavity, quick cooling cavity and forming cavity; the spray vacuum calibrating box is installed in the buffer cavity, quick cooling cavity and forming cavity with multiple A first annular nozzle, a second annular nozzle and a third annular nozzle, the base is provided with the first water tank and the second water tank, the second water tank is provided with a refrigeration device, the first annular nozzle and the third annular nozzle are connected with the first water tank communicated, the second annular nozzle is communicated with the second water tank, and the spray vacuum setting tank is also provided with a cooling water circulation system. The invention effectively reduces the cooling capacity of the refrigeration device and energy consumption by setting the buffer chamber and the quick cooling chamber on the basis of ensuring the molding quality of the PVC pipe.

Description

technical field [0001] The invention relates to the technical field of pipe shaping equipment, in particular to a PVC pipe automatic shaping equipment. Background technique [0002] PVC pipe, also known as hard polyvinyl chloride pipe, is made of polyvinyl chloride resin, stabilizer, lubricant, etc., and is extruded by hot pressing. It is the earliest plastic pipe that has been developed and applied. It is widely used in drainage, waste water, Applications for chemicals, heating and cooling fluids, food, ultrapure liquids, slurries, gases, compressed air and vacuum systems. Its production process is the preparation of raw materials + additives → mixing → conveying and feeding → forced feeding → conical twin-screw extruder → extrusion mold → sizing sleeve → spray vacuum calibrating box → soaking cooling water tank → ink printing machine →Crawler Tractor→Elevating Knife Cutting Machine→Pipe Stacking Rack→Product Inspection and Packaging. [0003] The existing patent announce...

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Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: after the PVC pipe is extruded and shaped, it needs to be quickly shaped in a vacuum shaping box, so as to avoid the occurrence of pipe diameter, diameter, etc. under the influence of its own weight or the external environment. Wall thickness deviation, so both the prior art and the above-mentioned technical solutions adopt the method of spraying cooling water in the vacuum box, and refrigeration equipment such as cooling plates are also installed on the cooling water tank. The PVC pipes in the box are cooled and shaped by indiscriminate cooling and cooling water, and with the increase of the diameter and wall thickness of the PVC pipes, the cooling capacity of the refrigeration equipment also needs to increase, which will undoubtedly greatly increase energy consumption and increase production costs

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