A continuous type press

Abstract

The invention provides a continuous type press comprising a pre-heating and pressurizing unit, a heating and pressurizing unit, a cooling and pressurizing unit and a steel belt conveying unit used for connecting the heating and pressurizing unit and the cooling and pressurizing unit in series. The pre-heating and pressurizing unit comprises a first roller group mechanism used for providing pressure and a heating device used for providing non-contact heating, as well as a conveying device which is arranged between the first roller group mechanism, cooperates with the first roller group mechanism and is used for conveying mechanisms. The cooling and pressurizing unit comprises a second roller group mechanism used for providing pressure and a thermal isolation device used for maintaining the internal temperature of the cooling and pressurizing unit. The continuous type press has the advantages of low energy consumption, low cost, long service life, short production cycle, high plywood production efficiency and high forming quality.

Description

technical field [0001] The invention relates to the technical field of biomass material production, in particular to a continuous press for preparing wood plywood. Background technique [0002] At present, a large number of plywood enterprises in China have gradually revealed various problems such as small scale, simple machinery and equipment, backward technology, monotonous product types, and uneven quality. With the rise of raw material prices and rising labor costs, the profits of plywood companies have been continuously compressed. The continuous production technology of plywood will be promoted and applied. [0003] Due to the special properties of plywood, there are few pores between the slabs, and the amount of air contained is very small. The rebound force of the slab is smaller than that of fiberboard and particleboard, but at the same time, it is difficult to discharge the water vapor inside the slab. The existing continuous presses for the production of fiberbo...

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Problems solved by technology

[0003] Due to the special performance of plywood, there are few pores between the slabs, the air volume is small, and the rebound force of the slab is smaller than that of fiberboard and particleboard, but at the same time, it is difficult to discharge the water vapor inside the slab.

The existing continuous presses for the production of fiberboard and particleboard basically use a roller chain and double steel belt structure, which is suitable for the process conditions of high pressure, high temperature and uniformity, but cannot solve the problem that plywood cannot be smoothly removed due to water vapor. Bubbles, delamination and other defects appear, and the cost of traditional roller chain double steel belt continuous press equipment is high, and the investment is large. The length of the press used for plywood production is longer than that used for fiberboard and particleboard. length, which is not conducive to the development and promotion of plywood continuous technology

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