Medium density fiberboard vacuum mechanical paving machine

Abstract

The invention relates to a vacuum-mechanical felting machine for MDF, which comprises a fiber feeding conveying device and a paving forming device. The paving forming device consists of a fiber forming chamber which is arranged on a the machine frame, a flat scanning device, a wire belt conveyor, a plurality of forming vacuum boxes, a flat scanning vacuum box and a paving head which is in the fiber forming chamber; the distance between the first forming vacuum box of a plurality of forming vacuum boxes and the end baffle at the side of the feed inlet ranges from 280 to 320mm, and the last forming vacuum box is close to the flat scanning vacuum box. In the invention, the forming vacuum box is moved forward for a certain distance to cause the fist forming vacuum box to deviate from the feedinlet, thus solving the problems of the existing vacuum-mechanical former that too much fiber is accumulated at the feed inlet, the slab with a certain wedge angle can not be formed and thus the quality of the slab is affected. At the same time, the last forming vacuum box is driven to be close to the flat scanning vacuum box, thus preventing the formed slab from rising and being damaged after losing the negative pressure.

Description

technical field [0001] The invention relates to a vacuum forming device on industrial equipment, in particular to a vacuum mechanical paving machine for producing medium-density fiberboards with wood fiber as raw material. technical background [0002] From the perspective of the development history of MDF, fiber forming equipment and laying machines can be roughly divided into three categories according to the forming principle of the laying head. One is a mechanical paving machine, the other is a vacuum air paving machine, and the third is a directional paving machine. Because directional paving requires a high-voltage electrostatic generator, which requires high control and maintenance, it is rarely used in the current production of MDF. The other types have been widely used so far because of their own characteristics. [0003] like figure 1 Shown is the most typical German Siempelkamp fiber machinery paving machine, mainly composed of feeding device 01, swing support ...

AI Technical Summary

Problems solved by technology

The current method is to prevent damage to the slab, and generally the end door of the fiber forming room needs to be opened a little larger, but this method will cause air to enter the fiber forming room from the end door of the fiber forming room, changing the way that the fibers fall from the needle rollers The direction of the fiber forming chamber is disordered, causing cracks in the slab

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