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Vacuum leading-in method, product produced by adopting method and vacuum leading-in device

A vacuum introduction and vacuum technology, which is applied in the field of resin vacuum introduction molding process, can solve the problems of poor performance and high porosity of fiber prefabricated products, and achieve the effect of reducing porosity, reducing porosity and ensuring uniformity

Active Publication Date: 2013-12-11
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a vacuum introduction method, a product made by the method, and a vacuum introduction device to solve the problems of high porosity and poor performance of fiber preform products manufactured by the existing vacuum introduction method

Method used

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  • Vacuum leading-in method, product produced by adopting method and vacuum leading-in device
  • Vacuum leading-in method, product produced by adopting method and vacuum leading-in device
  • Vacuum leading-in method, product produced by adopting method and vacuum leading-in device

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Embodiment 1

[0042] The following combination figure 2 , 3 The vacuum introduction method of embodiment one is described in detail, as shown in the figure, the method includes:

[0043] Step 201, laying the first vacuum bag 5 on the mold covered with fiber fabric, and sealing the mold cavity 7 formed between the first vacuum bag 5 and the mold.

[0044] Specifically, first of all, according to the operation process of the traditional vacuum introduction process, operations such as mold cleaning, coating of release agent on the mold, laying of fiber fabrics, laying of release fabrics and diversion media are carried out. There are technologies, so I won't repeat them here. Then, lay the first vacuum bag 5 on the fiber fabric 8 on the mold surface, thereby form a mold cavity 7 between the first vacuum bag 5 and the mould, insert the feed pipeline 2 at one end of the mold cavity 7, utilize the first The vacuum bag sealing strip 6 can seal the mold cavity 7 and the feeding pipeline 2 .

[...

Embodiment 2

[0068] The difference between the vacuum introduction method of this embodiment and the first embodiment is that the operation of vacuuming the interlayer formed by the second vacuum bag 10 and the first vacuum bag 5 is performed, and the resin mixture is configured, and the resin mixture is removed. The order of operations of the bubbles is different. In this embodiment, after the outer layer of the first vacuum bag 5 is covered with the second vacuum bag 10 and sealed, the resin mixture is first configured, and the resin mixture is defoamed, and the feeding pipeline is opened to degas the resin mixture. The resin mixture after soaking is introduced into the mold cavity 7 to infiltrate the fiber fabric 8, and then, after closing the feed line 2, open the second vacuum line 12 to remove the gap between the second vacuum bag 10 and the first vacuum bag 5. Vacuum.

[0069] In this embodiment, before the second vacuum bag 10 is covered, the first vacuum bag 5 is covered and seal...

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Abstract

The invention provides a vacuum leading-in method, a product produced by adopting the method and a vacuum leading-in device. The method comprises the following steps: paving a first vacuum bag on a mould paved with fiber fabric, and sealing a mould cavity formed between the first vacuum bag and the mould; vacuumizing the mould cavity to compact the fiber fabric in, and carrying out vacuum leak detection to the vacuumized mould cavity; if the vacuum leak detection result is qualified, paving a second vacuum bag on the outer layer of the first vacuum bag, and sealing an interlayer formed between the second vacuum bag and the first vacuum bag; vacuumizing the interlayer; defoaming resin mixed solution, and leading the defoamed resin mixed solution into the mould cavity to soak the fiber fabric. The method clears air contained in the resin mixed solution radically, effectively reduces the voidage of the fiber prefabricated product, and reduces the risk caused by single-layer vacuum bag leakage during the vacuum leading-in process.

Description

technical field [0001] The invention belongs to the technical field of resin vacuum introduction molding technology, and specifically relates to a [0002] A vacuum introduction method, a product made by the method, and a vacuum introduction device. Background technique [0003] Composite materials are widely used because of their light weight and high strength, and the manufacturing process for composite materials is also constantly improving and innovating. From the initial hand lay-up, to mechanized spraying, pultrusion, molding and other processes, to the emerging vacuum infusion process (Vacuum Infusion Process, VIP). [0004] The vacuum introduction process is a composite material liquid forming process, which is widely used in the manufacture of composite materials automobiles, fan blades and composite material yachts. At present, most of the fiber preforms are manufactured by the traditional single-layer vacuum bag introduction process. The specific method is as fo...

Claims

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Application Information

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IPC IPC(8): B29C70/44B29C70/54
Inventor 张静
Owner CHERY AUTOMOBILE CO LTD