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Shower nozzle suitable for 3D printing of continuous fiber reinforced composite

A technology for enhancing composite materials and 3D printing, applied in the field of 3D printing, can solve problems such as easy plugging, inability to produce fibers, and little research on 3D printing technology, and achieve the effect of rapid cleaning, enhanced bonding effect, and improved printing quality.

Active Publication Date: 2017-02-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current 3D printing technology of continuous fiber reinforced composite materials is less researched, and it is still in the research and development stage, and there are many problems
For example, the resin cannot fully enter the interior of the fiber ribbon, and the fiber filaments cannot be bonded together by the resin, thus forming a cavity inside the printed workpiece, which seriously reduces the mechanical properties of the workpiece
In addition, 3D printing of continuous fiber-reinforced composite materials is prone to clogging, resulting in the failure of fibers to flow out or resin overflowing from the inside of the nozzle

Method used

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  • Shower nozzle suitable for 3D printing of continuous fiber reinforced composite
  • Shower nozzle suitable for 3D printing of continuous fiber reinforced composite

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0025] Combine below figure 1 , 2 To illustrate this embodiment, the present invention belongs to the field of 3D printing, and more specifically, relates to a nozzle suitable for 3D printing of continuous fiber reinforced composite materials, including a printing nozzle 1, an inner cavity wall 2, a fiber throat 3, and a temperature sensor 4 , cap 5, heating rod 6, resin nozzle 9, resin throat 10 and Teflon 11, can improve the bonding effect of resin and fiber, prevent clogging, and be convenient to clean nozzle.

[0026] The print head 1 is detachably connected to the lower end of the fiber throat 3, the cap 5 is detachably connected to the upper end of the inner cavity wall 2, the cap 5 is nested with a heating rod 6 and a temperature sensor 4, and the fiber throat The upper end of the tube 3 is detachably connected to the cap 5, and the lower end of the fiber throat 3 is detachably connected to the lower end of the inner cavity wall 2; the resin nozzle 9 is detachably conn...

specific Embodiment approach 2

[0031] Combine below figure 1 , 2 Describe this embodiment, this embodiment will further explain the first embodiment, the fiber throat 3 includes a tapered section 3-1, a vertical section 3-2 and a through hole 3-3, the tapered section 3-1 and the vertical The straight sections 3-2 are connected, and the tapered section 3-1 is located at the upper end of the fiber throat 3, and the tip of the tapered section 3-1 is provided with a through hole 3-3. The through hole 3-3 is used to wear the fiber bundle 7, and is provided with a sealing gasket to prevent the resin from overflowing. In addition, the conical section 3-1 and the vertical section 3-2 jointly form a concave cavity, thereby changing the force direction of the molten resin 8, guiding the molten resin 8 to extrude downward, and reducing the flow of the molten resin 8 from the through hole. The probability of 3-3 extrusion effectively reduces the overflow of molten resin 8.

specific Embodiment approach 3

[0033] Combine below figure 1 , 2This embodiment will be described, and this embodiment will further describe Embodiment 1. The oblique holes on the fiber throat 3 are arranged on the vertical section 3 - 2 and are all located in the inner cavity wall 2 . The oblique holes on the fiber throat 3 are located in the cavity wall 2 to prevent the resin from passing through the oblique holes and initially overflowing from the connection between the cavity wall 2 and the fiber throat 3 or the connection between the fiber throat 3 and the cap 5 . For example, if the slanted hole is just located in the hole where the cap 5 or the lumen wall 2 is connected to the fiber throat 3, the molten resin 8 will be extruded from the slanted hole under extrusion and flow out from the cap 5 or the lumen wall 2. Overflow in the hole connected with the fiber throat 3.

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Abstract

The invention belongs to the field of 3D printing, and relates to a shower nozzle suitable for 3D printing of a continuous fiber reinforced composite. The shower nozzle comprises a printing shower nozzle, an inner cavity wall, a fiber throat pipe, a temperature sensor, a cap, heating rods, resin shower nozzles, resin throat pipes and Teflon. The bonding effect of resin and fiber can be improved, plugging is prevented, and the shower nozzle is convenient for being cleaned. The printing shower nozzle is detachably connected to the lower end of the fiber throat pipe. The cap is detachably connected to the upper end of the inner cavity wall. The heating rods and the temperature sensor are embedded in the cap. The upper end of the fiber throat pipe is detachably connected onto the cap. The lower end of the fiber throat pipe is detachably connected to the lower end of the inner cavity wall. The resin shower nozzles are detachably connected to the lower end of the resin throat pipe. The resin throat pipes are detachably connected to the cap. The annular Teflon is nested in the resin throat pipes. A plurality of through inclined holes inclining downwards are formed in the fiber throat pipe. The included angles between the axes of the inclined holes and the axis of the fiber throat pipe are smaller than 90 degrees. The inner cavity wall, the cap, the resin shower nozzles and the resin throat pipes are made of metal.

Description

technical field [0001] The invention belongs to the field of 3D printing, and more specifically relates to a nozzle suitable for 3D printing of continuous fiber reinforced composite materials. Background technique [0002] 3D printing technology is an emerging technology that is rapidly developing in the field of manufacturing. It is called "manufacturing technology with important symbolic significance for the third industrial revolution", and major developed countries have listed it as a key technology for strategic development. At present, 3D printing technology relies on cutting-edge technologies in multiple disciplines, and has been applied in aerospace technology, automobile and home appliance manufacturing, biomedicine, food processing and other fields. Compared with traditional manufacturing technology, 3D printing 3D rapid prototyping manufacturing technology omits the processing and manufacturing of product molds, thus greatly shortening the product development cycl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/209B33Y30/00
CPCB33Y30/00
Inventor 李隆球夏正付李英睿张广玉宋文平
Owner HARBIN INST OF TECH
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