A manufacturing process of edge-reinforced blow-molded panel

Abstract

The invention discloses an edge strengthening blow molding panel and a manufacturing technology thereof. The edge strengthening blow molding panel comprises an upper layer plate, a lower layer plate and a flange formed on the periphery of the panel. Blow molding is carried out between the upper layer plate and the lower layer plate to form a hollow structure. The edge strengthening blow molding panel is characterized in that the outer edge of the upper layer plate extends downwards to form the outer side wall of the flange, the outer edge of the lower layer plate extends downwards to form the inner side wall of the flange, and the flange is provided with a solid fusion part enabling a joint line at the flange to disappear due to mutual fusion of the outer side wall of the flange and the inner side wall of the flange. The edge strengthening blow molding panel has the advantages that due to the fact that the flange is provided with the solid fusion part enabling the joint line at the corresponding part of the flange to disappear due to mutual fusion of the outer side wall of the flange and the inner side wall of the flange, the structural strength of the flange is obviously improved, the problem that the joint line of the flange is prone to cracking is basically solved, and during manufacturing, the solid fusion part enabling the joint line to disappear can be formed at the flange through extrusion of a left die and a right die.

Description

technical field [0001] The invention relates to a blow molding panel, in particular to a manufacturing process of an edge-reinforced blow molding panel. Background technique [0002] Blow molding products are light in weight due to their hollow structure. In addition, due to their material, shape and structure, they have the advantages of strong rigidity, good impact resistance, and not easy to damage. In recent years, blow molding products have been used in many fields. Widely used, especially blown panels, more widely used. [0003] Existing blow-molded panels generally include an upper plate, a lower plate and flanges formed around the upper plate and the lower plate, and the upper plate and the lower plate are blown into a hollow structure. The bottom of the panel is usually distributed with many irregularly arranged concave support points of different shapes and sizes to increase its strength. However, due to the limitations of the blow molding process, there are stil...

AI Technical Summary

Problems solved by technology

However, due to the limitations of the blow molding process, there are still some potential failure points that are easy to be damaged on the panel, such as the thickness of the material at the concave support contact point becomes thinner after stretching, especially the edge of the panel is also thinner and softer, so these are the parts that are more likely to break

In addition, if Figure 4 As shown, in the existing blow molding panel, the upper layer a and the lower layer b extend downward to form a flange c, and the flange c forms a parting line d at the joint of the upper and lower molds, that is, the parting line. The parting line d is generally located at At the bottom of the outer side of the flange c, the joint of the parting line is formed by closing the upper and lower dies of the mold inward to form a relatively thick knife edge, so that the plastic can be squeezed to the parting line so that the parting line can stick there. The joint between the inner side and the outer side of the parting line of the product is concave from the inside to the outside, making the parting line relatively fragile. Experiments have proved that the blow-molded panel is the most vulnerable position at the parting line, with the lowest structural strength and the most likely to be damaged due to shattered by impact

In order to overcome the above problems, people often increase the structural strength of the panel by increasing the thickness of the panel. However, the defect of using a thickened panel is that the panel looks thicker. Even if a thickened panel is used, if the edge structure is not improved. The rigidity and structural strength of the edge of the panel still cannot be improved, and the problem that the parting line of the blow-molded panel is easy to break has not been solved.

[0004] In addition, during the processing of the existing blow molding panel, the junction of the mold line is formed by the inward closing of the upper and lower dies of the mold to form a thicker knife edge, so that the plastic is extruded to the mold line so that the mold line can Sticking, after the product actually comes out, the product is the most vulnerable position at the parting line, and it is easy to break under the impact of external force

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