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Multi-line pump driven fiber impregnation system

A technology of fiber dipping and fiber application in the direction of coating to achieve the effects of improving production efficiency, expanding the selection range, improving fiber exhaust and wetting speed and effect

Active Publication Date: 2019-04-30
COVESTRO DEUTSCHLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this patent proposes to use such as a peristaltic pump or other suitable pump as a driving pump to transport resin, since this patent mainly involves a general resin transfer molding process, it is difficult for those skilled in the art to think of using Application of the above-mentioned dispensing system, especially the peristaltic pump therein, to the extrusion molding process

Method used

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  • Multi-line pump driven fiber impregnation system
  • Multi-line pump driven fiber impregnation system
  • Multi-line pump driven fiber impregnation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] See Figure 7 , the composite material forming equipment in Example 1 of the present invention is arranged sequentially along the direction in which the fiber 100 enters the equipment and the pultruded profile 200 is pulled out of the equipment, with an inlet plate 150, a multi-pipeline pump-driven fiber impregnation system (including Glue box 110 and preformed plate 160), outlet plate 170 and forming curing device 180, wherein fiber 100 is initially wetted in the fiber dipping box 110 of the fiber impregnation system, and is further positioned by preformed plate 160 and outlet plate 170 to form a close The shape of the section of the profile 200 is further wetted, and the curing is completed in the cavity of the forming and curing device 180 , and finally the composite material profile 200 is formed and pulled out of the forming and curing device 180 .

[0080] Although Figure 7 Only one stage of preformed panels 160 is designed in the shown apparatus, but it is clea...

Embodiment 2

[0093] See Figure 8 , except for the number of preformed plates 160, the overall structure of the composite material forming equipment of the second embodiment of the present invention is basically the same as that of the composite material forming equipment of the first embodiment of the present invention. Such as Figure 8 As shown, it can be seen that two preformed plates 160 are arranged before the outlet plate 180 , so that two communication passages 130 are formed between the two preformed plates and between the preformed plate 160 and the outlet plate 170 .

[0094] Although Figure 8 Only two stages of preformed panels 160 are designed in the shown plant, but it is clear to a person skilled in the art that more than two stages of preformed panels 160 can also be designed. The preform plate 160 is provided with a series of small holes and / or slits which function to bend the fabric into a shape close to the cross-section of the final product and position the yarns in ...

Embodiment 3

[0102] See Figure 9 , in the composite material molding equipment of Embodiment 3 of the present invention, a closed cavity 142 is formed between the outlet plate 170 and the molding and curing device 180, and a vacuum suction port 141 can be equipped for the closed cavity 142, so that the cavity A specified vacuum degree is generated inside, so as to further improve the impregnation quality of the resin to the fiber. In the working state, the vacuum suction port 141 is opened to generate a certain negative pressure in the closed cavity 142 to help the air bubbles inside the fiber to escape, thereby impelling the resin to soak into the fiber.

[0103] In addition, the airtight cavity 142 can be opened or closed independently, so as to facilitate on-line processing of process failures of fibers at the mouth of the forming and curing device or other process equipment, such as yarn blocking and breaking. For this reason, the return end of the third return hose 122-3 may be dire...

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Abstract

The invention relates to a fiber impregnation system. The fiber impregnation system comprises a fiber impregnation box (110) and a driving pump (120) connected with the fiber impregnation box (110) by one or more refluxing hoses (122), wherein the refluxing hoses (122-1, 122-2 and 122-3) are used for recycling resin from the fiber impregnation box and refilling the fiber impregnation box with the resin under the driving action of the driving pump; and preferentially, the driving pump (120) is a peristaltic pump or a diaphragm pump. Besides, the invention also relates to equipment for performing pultrusion on fibers (100) to obtain a section material (200) by use of the fiber impregnation box. According to the fiber impregnation system, the fiber impregnation box and the peristaltic pump provided with at least one pump head are combined, and the quantity of pumps, pump heads and pipelines is increased as required by production and processing, thus, the fiber impregnation box is not required to be closely connected with a corresponding molding and solidifying device, and a yarn guiding plate can be arranged in the fiber impregnation box; and the fiber impregnation box and the corresponding molding and solidifying device can be separable and vacuumizing operation is carried out, and thus, the fiber exhaust efficiency is improved.

Description

technical field [0001] The invention relates to a general-purpose fiber impregnation system used in a pultrusion molding process, in particular to a multi-pipeline pump-driven fiber impregnation system. The fiber impregnation system is suitable for application in the field of pultrusion molding, more specifically, it is suitable for application in the field of pultrusion molding of polyurethane resin. On the other hand, the present invention also relates to a device for pultruding composite materials using a multi-pipeline pump-driven fiber impregnation system. Background technique [0002] With the continuous expansion of the application field of pultruded products, the specifications and varieties of pultruded products are also increasing. In addition to standard pultruded product shapes such as L-shaped, O-shaped, U-shaped, flat-shaped, hollow or solid, various special-shaped structures can also be produced according to customer needs. The size of the pultruded composit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B15/14B29C70/52
Inventor 张晨曦周志平陈湛李志江
Owner COVESTRO DEUTSCHLAND AG
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