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Method for preventing honeycomb from sliding

A honeycomb and slip technology, applied in the field of composite material manufacturing, can solve complex repair problems and other problems, and achieve reliable process assurance, production schedule assurance, and easy realization.

Inactive Publication Date: 2016-08-03
HARBIN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of this invention is to propose a process method to prevent the honeycomb from slipping during the curing process, so as not to cause complicated repair problems

Method used

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  • Method for preventing honeycomb from sliding

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Embodiment Construction

[0014] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments:

[0015] This method for forming sandwich-type composite parts takes the cover forming of a certain type of machine as an example, and its operation steps are as follows:

[0016] 1) Prepare the forming tooling 1, scrub the forming mold with butanone to ensure that the surface of the forming tooling 1 is smooth and free of grease, and paste the anti-slip tape 3 with glue 2 at a place 20-30 mm outside the product cutting line of the forming tooling, and it must be completely cured on the anti-slip tape After that, the parts can be layered. The width of the anti-slip belt 3 is determined according to the number of paving cloth layers required by the design. For each additional layer of skin, the anti-slip belt is increased by 10mm; the outer edge of the anti-slip belt and the edge of the forming tooling are set aside at l...

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Abstract

The invention belongs to the technical field of composite manufacturing and relates to a method for preventing a honeycomb from sliding. An anti-slide band is pasted to a tool and is made from a high-friction material. The periphery of each layer of prepreg cloth is closely attached to the friction band, and during the part curing process, the relative position of each layer of the prepreg cloth is ensured through the anti-slide band, so that relative motion of an upper skin prepreg of a sandwich structure and a lower skin prepreg of a sandwich structure is prevented, and the honeycomb is prevented from sliding. The anti-slide band method does not need to change the curing mode of materials and has no special limit to the materials, so that the method is suitable for various prepreg materials. In addition, the operation method is simple and convenient and easy to realize. The sliding problem of the honeycomb in the curing process is effectively solved, and the position and size of a formed part honeycomb meet the requirement of a design drawing.

Description

technical field [0001] The invention belongs to the technical field of composite material manufacturing and relates to a method for preventing honeycomb slippage. Background technique [0002] Most of the manufacturing methods of honeycomb sandwich structure parts adopt the autoclave method, which is heated and solidified after pressurization. During the curing process, the prepregs of the upper skin and the lower skin of the honeycomb sandwich tend to move relatively, which leads to the slippage of the honeycomb between the upper and lower skins. The failure rate reaches more than 50%. After the honeycomb slips, it will inevitably affect the strength and appearance of the parts. If the honeycomb slips into the assembly area, it will interfere with the parts in the assembly area. The honeycomb of parts often slips, and if the size of the slip exceeds the limit allowed by the design, it must be repaired. The repair process not only increases the production cost of materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54
CPCB29C70/342B29C70/54
Inventor 王春艳
Owner HARBIN
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