Plywood pre-pressing sizing device

Abstract

The invention belongs to the technical field of plywood processing, and particular discloses a plywood pre-pressing sizing device. The plywood pre-pressing sizing device comprises a machine frame, conveying rollers, a first pressing roller, a second pressing roller and two side pressing rollers. A set of conveying rollers are evenly arranged at the bottom of the machine frame. The two side pressing rollers are symmetrically disposed at the intermediate position of the upper portion of the machine frame, the first pressing roller is disposed on one side of the side pressing rollers, and the second pressing roller is disposed on the other side of the side pressing rollers. Limiting rods are disposed at the top of the machine frame. The limiting rods are provided with vertical first limitinggrooves, and power modules are disposed on the outer sides of the limiting rods. The power modules each comprise a motor, a first cylinder, a turntable and a connecting rod, and the two ends of each of the conveying rollers are separately sleeved with gears. First sliding units are disposed at both ends of the first pressing roller, and second sliding units are disposed at both ends of the secondpressing roller. According to the plywood pre-pressing sizing device, a method of pressing in sections is adopted, and the first and second sliding units are synchronously linked, so that the first pressing roller and the second pressing roller can rotate and press plywood in a reciprocating mode, and the pressing efficiency and the strength of the plywood are improved.

Description

technical field [0001] The invention belongs to the technical field of plywood processing, in particular to a plywood pre-pressing and shaping device. Background technique [0002] Plywood is one of the commonly used materials for furniture, and it is one of the three major boards of wood-based panels. It can also be used for aircraft, ships, trains, automobiles, buildings and packaging boxes. A group of veneers are usually assembled and glued together according to the direction of the wood grain of adjacent layers perpendicular to each other. Usually, the surface board and inner layer board are symmetrically arranged on both sides of the center layer or core. The slab made of the veneer after gluing is criss-crossed according to the direction of wood grain, and pressed under heating or non-heating conditions. The number of layers is generally an odd number, and a few have even numbers. The difference in physical and mechanical properties in the vertical and horizontal dir...

AI Technical Summary

Problems solved by technology

The existing preloading device usually uses a hydraulic cylinder to control the movement of the upper platen for overall pressing. If the one-time pressing area is too large, the pressing between the laminates is likely to be incomplete, the preloading effect is not good enough, and the hydraulic cylinder is used to control. There is also the problem of complex structure, which increases production costs

[0004] There are also some technical solutions for plywood pre-pressing devices in the prior art. For example, a Chinese patent with application number 2018102051612 discloses a plywood pre-pressing device, including a fixed frame, a conveying roller, a first pressure roller, a second Pressure roller and side pressure roller, the present invention moves the moving seat and screw rod up and down through the rotating cam, so that the height of the side pressure roller can be changed regularly. When the side pressure roller moves up, the conveying roller rotates to make the The laminate moves, the first pressure roller presses the middle part of the laminate for the first time, when the side pressure roller is located at the innermost side of the screw, the bottom end just contacts the laminate, the conveying roller stops moving, and the side pressure roller moves from inside to outside , to press the sides of the laminates, so that the laminates are completely pressed, and the pressing effect is good; after the first pressing roller and the side pressing roller are pressed, the laminates are pressed twice by the second pressing roller, Further improve the lamination effect; this technical scheme adopts the method of partial lamination, so that each part can be evenly laminated, effectively avoiding the problems caused by large-area lamination, simple in structure, and low in production cost; but in this technical scheme, there is no It can achieve the overall continuity of the device, and the pressing efficiency needs to be further improved

Images