A forming mechanism for pvc sheet

Abstract

The invention relates to a molding mechanism for PVC boards, comprising a mixing machine, an extruder, a feeder, a mould, a film-coated calender, a tractor and a shearing machine connected in sequence from end to end, a film-coated calender and a traction machine. The machines are connected by brackets; there is a leveling device between the feeder and the mold to evenly spread the materials from the feeder; The plate output by the optical machine outlet; the rear section of the bracket is equipped with a trimming and slitting device. The trimming and slitting device includes two side guides and a trimming mechanism that can be close to or far away from each other. The side guides are used for PVC sheets. Centering guide before trimming, the trimming mechanism is used to symmetrically cut both sides of the PVC sheet. Beneficial effects: the material leveling device flattens and compacts the material, and the material enters the mold without holes and is uniform; the drying device can quickly dry the material; the symmetrical side guide plate can guide the centering of the PVC board, and the edge trimming mechanism can ensure Symmetry of the cut.

Description

technical field [0001] The invention relates to a production equipment for PVC boards, in particular to a forming mechanism for PVC boards. Background technique [0002] The PVC board is a board made of PVC as a raw material with a honeycomb mesh structure in section. It is a kind of vacuum blister film, which is used for the surface packaging of various panels, so it is also called decorative film and adhesive film, and is used in many industries such as building materials, packaging, and medicine. Among them, the building materials industry accounts for the largest proportion, 60%, followed by the packaging industry, and several other industries with small-scale applications. According to the degree of softness and hardness, it can be divided into soft PVC and hard PVC. According to the production process, it can be divided into PVC crust foam board and PVC free foam board. The raw materials of PVC foam products have flame retardant and self-extinguishing properties, an...

AI Technical Summary

Problems solved by technology

[0003] In the production process of PVC boards, mixers, extruders, feeders, moulds, laminating calenders, tractors, shears and brackets are required. Before the material from the feed port enters the mold, it is not flattened and compacted, resulting in holes in the material after entering the mold, and the material is uneven; there is no drying device on the bracket, and the material is sheared before it is completely dry, which affects Quality; there is no symmetrical side guide plate on the trimming and slitting device, the PVC board cannot be centered and guided, and the trimming mechanism cannot guarantee the symmetry of cutting

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