A pvc sheet calendering machine

Abstract

The invention provides a PVC sheet calendar, and relates to the field of calenders. The PVC sheet calender comprises a double-roll extrusion mechanism for extruding a PVC material, a staggered transmission mechanism for guiding the material and avoiding a large angle deviation of the material in the process of transmission and heating, and a wind-driven impurity removal mechanism for removing impurities on the material; the double-roll extrusion mechanism and the staggered transmission mechanism are mounted together; and the wind-driven impurity removal mechanism is arranged on the staggered transmission mechanism. The PVC sheet calender integrates and uniformly operates the work of material transmission, deviation rectification, preheating and the like by arranging the staggered transmission mechanism and the wind-driven impurity removal mechanism which are closely related, wind power is used fully to control the material transmission, impurity removal and preheating, and the mechanisms complement each other, so that the problems that a common PVC sheet calender is prone to store dirt and scale after softening, bubbles and uneven thickness are easily caused in the sheet extrusionprocess, the material is easily subjected to an angle deviation on a roller, and material damage and waste are caused to a certain extent are effectively solved.

Description

technical field [0001] The invention relates to the technical field of calenders, in particular to a PVC sheet calender. Background technique [0002] The calender consists of two or more rollers arranged in a certain form, and at a certain temperature, rubber or plastic is pressed and stretched into a film with a certain thickness and surface shape. Existing calender has the following problems during actual production: [0003] 1. Due to the large space and complex environment of the PVC production workshop, it is inevitable that there will be a lot of impurities in the air. In this way, the dust removal device needs to be used to remove the impurities when the PVC material is walking on the calender. However, since the sheet needs to be heated during the transmission process, it is very likely that some impurities will be covered on the softened sheet and difficult to be removed. These impurities will cause damage to the surface of the sheet and even generate air bubbles ...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a PVC sheet calender, which solves the problems that common PVC sheet calenders are easy to hide dirt after softening, and easy to generate air bubbles and uneven thickness during sheet extrusion. The situation, the material is prone to angle deviation on the roller, which will cause damage and waste of the material to a certain extent

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