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A preparation method of composite material lifting lug and composite material lifting lug

A technology of composite materials and lifting lugs, applied in the direction of load hanging components, transportation and packaging, etc., can solve the problems of difficult opening of ear holes, low structural strength of ear holes, etc., achieve the effect of precise position and wide application space

Active Publication Date: 2021-08-17
北玻院(滕州)复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing the composite material lifting lug and the composite material lifting lug. By adopting a new lifting lug preparation process, it is difficult to open ear holes when preparing the existing composite material lifting lugs, and the structural strength of the ear holes is too low technical issues

Method used

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  • A preparation method of composite material lifting lug and composite material lifting lug
  • A preparation method of composite material lifting lug and composite material lifting lug
  • A preparation method of composite material lifting lug and composite material lifting lug

Examples

Experimental program
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Effect test

Embodiment 1

[0058] See figure 1 , the present invention provides a kind of preparation method of composite material lifting lug, described method comprises the following steps:

[0059] Prepare the ear hole post: the cross-sectional shape of the ear hole post is adapted to the shape of the ear hole of the composite material lifting ear; the length of the ear hole post is 10 to 30 mm greater than the depth of the ear hole;

[0060] Coating the release agent: apply the release agent 1 to 2 times in the cavity of the clean vacuum into the mold;

[0061] Marking the setting position of the ear hole: marking the setting position of the ear hole in the mold cavity;

[0062] Assembling the ear hole post: bonding the bottom surface of the ear hole post to the marked position of the ear hole; coating the exposed surface of the ear hole post with the release agent 1 to 2 times;

[0063] Laying the first glass fiber cloth layer: laying the glass fiber cloth layer in the inner cavity of the mold ca...

Embodiment 2

[0080] Such as figure 2 As shown, on the basis of Embodiment 1, this embodiment also includes the following steps:

[0081] Laying of the reinforced structure at the lug part: laying a second glass fiber cloth layer at the position where the ear hole of the injection molded product is set;

[0082] Laying the second auxiliary vacuum forming material: laying the second release cloth, the second guide net, the second glue injection pipe, the second glue suction pipe and the second vacuum film sequentially above the second glass fiber cloth layer; The second glue injection pipes are equidistantly arranged above the second guide net; the second glue suction tube is arranged at the edge of the second guide net; the second vacuum film is used to The laying position of the second glass fiber cloth layer is sealed;

[0083] Vacuum infusion molding at the hanger part: introduce injection molding raw materials into the second glass fiber cloth layer laying part through the second inj...

Embodiment 3

[0089] Such as Figure 4 and Figure 5 As shown, this embodiment provides a composite material lifting lug, which is made by the above method. The structure of the lifting lug includes: an ear seat 100 formed by vacuum drainage injection molding and a through hole 110 arranged on the ear seat 100 The ear base 100 includes: a body 101 and a connecting portion 102; the through hole 110 is disposed on the body 101; the connecting portion 102 is integrally connected with the body 101.

[0090] Preferably, in one of the preferred technical solutions of the present application, the body and the connection part are integrally formed by vacuum introduction and injection molding. made as Figure 6 As shown, the ear hole post 111 is inserted in the through hole, and the ear hole post 111 needs to be removed before the finished product is obtained.

[0091] Preferably, as Figure 4 to Figure 7As shown, in one of the preferred technical solutions of the present application, the body 1...

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Abstract

The purpose of the present invention is to provide a method for preparing a composite material lifting lug and a composite material lifting lug, by adopting a new lifting lug preparation process, to solve the problem that the existing composite material lifting lugs are difficult to open ear holes and the structural strength of the ear holes is too low Technical problem; the method includes the steps of: preparing an ear hole column, the length of which is 10 to 30 mm greater than the depth of the ear hole; coating a release agent, and coating the release agent in the cavity for 1 to 2 times; marking Earhole setting position: Assemble the earhole column, and apply the release agent 1 to 2 times on the exposed surface of the earhole column after bonding; lay the first glass fiber cloth layer, on the glass fiber cloth layer The interfering part is provided with a hollow hole matching the shape of the cross-section of the ear hole column; laying auxiliary first vacuum forming material: vacuum infusion molding: after the injection molding is completed, the vacuum is introduced into the mold and cooled naturally at room temperature to obtain an injection molded product. The invention can more easily obtain the composite material lifting lug with excellent structural strength.

Description

technical field [0001] The invention relates to the technical field of lifting lug forming, in particular to a preparation method of a composite material lifting lug and the composite material lifting lug. Background technique [0002] Underwater composite protective cover products need lifting lugs to facilitate hanging straps during transportation and launching. The position of the lifting lugs has to withstand external forces such as the product’s own weight and sea breeze, so the requirements for the setting position and structural performance of the lifting lugs are relatively high. The thickness of the composite lifting lug in the prior art is relatively thick. In order to meet the structural requirements of the position of the lifting lug, the round hole needs to be cut after integral molding during molding. Because the structural performance strength of the part to be cut is high, cutting is very difficult. , the size tends to have a large deviation during the operat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/36B29C70/54B66C1/22
CPCB29C70/36B29C70/54B29C70/545B66C1/22
Inventor 刘晓彬李义全姚利超孟占广刘归
Owner 北玻院(滕州)复合材料有限公司
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