Polyurethane foam forming mould and manufacturing method of mould cavities

A technology of foam molding and manufacturing methods, which is applied in the field of toy molds, and can solve the problems of "flashing", poor matching of mold cavity parting lines, and the need to coat mold release agents in molded products, so as to achieve bonding fastness Good, the efficiency of molding processing is improved, and the effect of reducing production costs

Inactive Publication Date: 2009-09-23
黄吉力
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can solve the technical problems of poor mold cavity parting line coincidence between aluminum alloy casting mold and epoxy resin mold, mold cavity must be coated with release agent, and molded products are prone to "flash"

Method used

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  • Polyurethane foam forming mould and manufacturing method of mould cavities
  • Polyurethane foam forming mould and manufacturing method of mould cavities
  • Polyurethane foam forming mould and manufacturing method of mould cavities

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Embodiment Construction

[0025] refer to Figure 1~2 Schematic diagram of the structure of the polyurethane foam molding mold. It is composed of a locking device 1, a lower mold cavity 2, a lower mold frame 3, a mold opening and closing device 4, an upper mold frame 5, an upper mold cavity 6, and a filling layer 7. The locking device is used to lock the mold. The lower mold cavity and the upper mold cavity are the main body of the foam molding of the product. The lower mold base and the lower mold base are the main body supporting the mold. The mold opening and closing device is a rotating part for mold opening and closing. The layer is to fill the gap between the lower mold cavity, the upper mold cavity and the upper mold frame and the lower mold frame to increase the strength of the mold. The schematic diagram of mold opening and closing is shown in Figure 6 .

[0026] image 3 , Figure 4 , is a structural schematic diagram of the mold cavity made of crystalline material in the polyurethane fo...

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PUM

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Abstract

The invention discloses a polyurethane foam forming mould and a manufacturing method of mould cavities. The mould comprises a mould frame, mould cavities, filling layers between the mould frame and the mould cavities, a locking device and a mould opening and closing device; the mould cavities are made of crystalline resin materials; an exhaust hole is arranged on the lower mould cavity; spew grooves are respectively arranged on the upper mould cavity and the lower mould cavity; and a blade parting surface and an upper and lower mould cavity positioning surface are respectively arranged on the upper mould cavity and the lower mould cavity. The mould cavities are made of the crystalline resin materials, and the manufacturing method of the mould cavities comprises the following steps: firstly designing the mould cavities by using a computer three-dimensional design software and then manufacturing the mould cavities by adopting the CNC numerical control processing, the injection-moulding processing, the rapid forming processing and the vacuum moulding processing methods. The invention solves the technical problems that a mould cavity parting line between an aluminum alloy casting mould and an epoxy resin mould has worse matching, the mould cavities are required to be coated with mould release agents, and formed products are easy to generate flash edges, so that the forming processing efficiency of similar products is improved, thereby reducing the production cost and improving the availability of resources.

Description

technical field [0001] The invention relates to a mold for toys, which is designed for manufacturing toy products by foaming polyurethane material as a forming mold. Background technique [0002] The polyurethane foam molding process is that the polyurethane raw material is foamed and molded in a closed mold cavity under the action of a foaming agent to make a soft product. The plasticity of the product shape is strong, the color is rich, and the product development cycle and production cycle are short. It is a better way to manufacture products such as handicrafts and toys. [0003] At present, there are mainly two types of molds for foam molding of polyurethane materials: [0004] 1. Aluminum alloy casting mold, which is the most widely used mold at present. The surface smoothness of the cavity of the aluminum alloy casting mold is not very good; at the same time, the dimensional consistency of the cavity after polishing and other processes is relatively poor; the alumi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/58B29C33/40B29C33/30B29C33/38B29K75/00
Inventor 黄吉力
Owner 黄吉力
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