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Cold-forming mould for heavy load fiber molding trays and cold press moulding method

A cold-pressing and cold-forming technology, applied in textiles and papermaking, etc., can solve the problems of difficult to form complex thick-walled structures, large deformation, low load, etc., to overcome the serious disconnection between production and design, low work costs, Efficient effect

Inactive Publication Date: 2017-10-20
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large amount of deformation during the fiber molding process, it is difficult to form a complex thick-walled structure with a higher density, resulting in the current fiber molded trays showing the characteristics of large volume and low load capacity.
At present, the method of forming thick-walled fiber molded structures at home and abroad is mainly formed by gas suction filtration, but it is difficult to form complex thick-walled structures with higher density

Method used

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  • Cold-forming mould for heavy load fiber molding trays and cold press moulding method
  • Cold-forming mould for heavy load fiber molding trays and cold press moulding method
  • Cold-forming mould for heavy load fiber molding trays and cold press moulding method

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Embodiment 1. As shown in the drawings, the embodiment of the present invention provides a cold forming mold for a heavy-duty fiber molded tray, including a panel die 3, a panel die 1 and a leg die 2;

[0047]The panel die 3 is an open box structure, and a panel die net mold 7 is horizontally arranged between the panel die side walls 6, and a panel die cavity is formed between the panel die net die 7 and the panel die bottom plate 9 4. A drain valve 5 and a gas valve 8 are installed on the side wall of the cavity 4 of the panel die;

[0048] The panel pressing die 1 comprises a panel pressing die top plate 16, a panel punch 14, a leg die 13, a leg mold box 12 and a first lift cylinder 11, and the panel pressing die top plate 16 is provided with a plurality of first Lifting cylinder 11, a plurality of panel punches 14 and a plurality of leg dies 13 are arranged below the panel die top plate 16, and the leg dies 13 extend upwards to the top of the panel die top plate, and...

Embodiment 2

[0055] Embodiment 2, as shown in the accompanying drawings, this embodiment of the present invention provides a method for cold-pressing a heavy-duty fiber molded tray, which is based on the cold-press molding method for a heavy-duty fiber molded tray described in Example 1. The forming mold is realized, the specific steps are:

[0056] 1. Inject a certain concentration of fiber suspension required for heavy-duty fiber molding pallet panels into the panel die 3;

[0057] 2. Open the drain valve 5 of the cavity 4 of the panel die, and after the water has leaked out, under the action of the first lift cylinder 11 and the second lift cylinder 21, the panel die 1 and the leg die 2 are inserted into the panel In the die 3, at the same time, the die cavity 15 of the panel punch and the leg die, the die cavity 26 of the leg punch, and the panel die cavity 4 are connected to the vacuum, and the fiber slurry is mechanically extruded and processed for a certain period of time. Suction,...

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Abstract

The invention discloses a cold-forming mould for heavy load fiber molding trays and a cold press moulding method, and belongs to the technical field of fiber molding products and molding processes. The technical scheme is characterized in that the cold-forming mould comprises a panel concave mould, a panel pressing mould, and a supporting-leg pressing mould; the panel concave mould comprises a net mould, a mould cavity, a water discharging valve and a gas valve; the panel pressing mould comprises panel convex moulds, supporting-leg concave moulds, supporting-leg mould boxes and lifting air cylinders, and each panel convex mould and the corresponding supporting-leg concave mould are composed of net moulds and a common mould cavity; and the supporting-leg pressing mould comprises supporting-leg convex moulds, supporting-leg pushing moulds, supporting-leg pressing shafts, a panel and a lifting air cylinder. The method comprises the following steps: panel moulding of the heavy load fiber molding trays, supporting-leg moulding of the heavy load fiber molding trays, integrated moulding of the heavy load fiber molding trays and demoulding. The mould and the method are used for moulding of the heavy load fiber molding trays, the moulding process is simple, the efficiency is high, work costs are low, mechanism operation is stable, and the moulds and the method have great practical value.

Description

technical field [0001] The invention relates to a molding device and method for a heavy-duty fiber molded tray, in particular to a cold-forming mold and a cold-press molding method for a heavy-duty fiber molded tray, and belongs to the technical field of molding technology of fiber molded products. Background technique [0002] With the rapid development of the logistics industry, the demand for pallets in the logistics market has become increasingly prominent. However, with the reduction of solid wood resources of the most widely used wooden pallets and the strict import and export quarantine of wooden pallets, the development of wooden pallets is severely restricted. However, plastic trays, metal trays, etc. are limited in application because of their inherent obvious defects. Heavy-duty fiber molded pallets are used to replace traditional wooden pallets due to their cheap raw materials, wide sources, renewable, simple process, high strength, small size, recyclable waste ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21J3/00
CPCD21J3/00
Inventor 肖生苓王全亮岳金权
Owner NORTHEAST FORESTRY UNIVERSITY
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