Integrally pressing method of vegetable fibre tray provided with connected supporting legs and special mould thereof

Abstract

The invention discloses an integrally pressing method of a vegetable fibre tray provided with connected supporting legs and a special mould thereof. The special mould comprises a female mould, an upper punch, a lower punch, a core rod movably connected with the lower punch, and a power device, wherein the female mould comprises a frame, a mould core and a spacing mould; the spacing mould extends into the middle of a cavity arranged between the frame and the mould core to divide the cavity into a tray plate die cavity, a supporting leg die cavity and a connecting plate die cavity arranged between the supporting legs; the lower punch comprises a lower punch A and a lower punch B; the punch head of the lower punch A axially moves in the tray plate die cavity of the female mould; and the lower punch B axially moves in a die cavity hole at the lower part of the supporting leg die cavity. The pressing method comprises the steps that: first, a tray plate is pressed by the upper punch; then aconnecting plate is pressed by the lower punch A; and the supporting legs are pressed through the coordination of the lower punch B and the core rod. The invention has the advantages of even pressing, small damage ratio, large bearing force of finished products and low cost.

Description

Technical field: [0001] The invention relates to plant fiber pressed products, in particular to special equipment for pressing trays with plant fibers and a pressing method thereof. Background technique: [0002] At present, in the process of cargo storage, stacking and transportation, pallets have become one of the main tools. Among them, the plant fiber tray is favored by the market because it can be recycled and reused, and the recovery rate can reach 100%. At the same time, it has the advantages of low cost, low pollution, and no need for fumigation treatment. However, due to the poor fluidity of the raw materials and the particularity of the large volume change during the molding process, the plant fiber tray adopts a general conceptual molding process such as a one-way molding process, and there is generally uneven compaction density, especially the gap between the support feet and the plate. The joint is even the weak link. It is difficult to form and demould during ...

AI Technical Summary

Problems solved by technology

However, the patent submitted by the inventor only solved the problem of the production of plant fiber trays with discs on the top and split support feet below. For trays with special shapes, such as one-piece support legs at the bottom of the disc Or pallets with supporting feet arranged between the upper and lower plates, or reinforced ribs in the supporting foot cavity, it is still difficult to produce qualified products with existing technical solutions

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