A production line of foamed core metal composite board and its production process

Abstract

The invention discloses a foaming core material metal composite plate production line which comprises a core layer plate forming unit, an upper-layer metal plate uncoiling unit, a lower-layer metal plate uncoiling unit and a composite forming unit. A foaming core layer is compounded with an upper-layer metal plate and a lower-layer metal plate which are adhered with polymeric membranes in advance through a two-roller compounding machine to make the thickness and flatness of a metal composite plate meet the requirements. The metal composite plate can always in a tensioning state by utilizing the traction of a traction device, extruding thickness fixing of a thickness fixing roller is not needed, excessive extrusion to a core layer plate is avoided, the thickness fixing is more accurate, the surface flatness is higher, and the peeling strength is also higher. In addition, the invention further discloses a metal composite plate production process. The production process utilizes the traction of the traction device to make the metal composite plate always in the tensioning state, utilizes a tension to achieve shape fixing and levelling, the extruding thickness fixing of the thickness fixing roller is needed no longer, the excessive extrusion to the core layer plate is avoided, the thickness fixing is more accurate, the surface flatness is higher, and the peeling strength is also higher.

Description

technical field [0001] The invention relates to a production line for metal composite boards with foamed core materials, which is used for producing metal composite boards with foamed core materials. At the same time, the invention also relates to a production process for the metal composite boards. Background technique [0002] Metal composite panels are widely used in the current national economic production activities. With the further development of my country's economy and the world economy, the body panels of vans and even containers will develop in the direction of higher performance, including industrial applications, so steel-plastic composite panels will also have a very wide range of applications prospect. At present, the foamed core material metal composite board mainly includes an upper stainless steel plate, a foamed plastic layer, and a lower stainless steel plate, and the three are bonded by a polymer film. However, the current foamed core metal composite bo...

AI Technical Summary

Problems solved by technology

However, the current foamed core metal composite board has been stuck in the research and development stage, such as the invention patent with the patent number: 201310030790.3. Although the invention patent discloses a manufacturing equipment and method for a foamed metal composite board, the The production method and equipment cannot be really applied to industrial production. The expected reasons are as follows: 1. The production equipment uses 8 pairs of core boards with a three-roll machine to shape and calender, but because the foamed core board has a very There are many micropores, the interior is not solid, and the core board cannot always maintain a certain thickness after being shaped and calendered by the three-roller machine, especially when the core board is just extruded from the die of the extruder, the temperature is high and it becomes molten , After setting and calendering, the core plate is not stable at this distance from the polymer film lamination; 2. The production equipment first cools the core plate and then combines it with the unheated steel plate through the composite roller group and the shaping roller group , and at this time, the temperature on both sides of the polymer film is different, so it cannot be firmly bonded to the steel plate, and the peeling strength of the bond is poor; It is obviously unreasonable to use the matching roller group for extrusion. The core layer of the metal composite board is a foam layer, not an ordinary aluminum-plastic board. Due to the existence of the foam layer, the foam layer has many micropores. It is easy to deform, shrink or expand when it is shaped by extrusion. Therefore, the extruded foamed metal composite panel not only has poor shaping effect, but also cannot guarantee the thickness, and the flatness of the surface is still very poor.

Therefore, for the above-mentioned reasons, the scheme of the invention cannot be applied to production.

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