Manufacturing process of propeller and large efficient blade propeller of fan

A fan blade and manufacturing process technology, which is applied in the field of propeller and large-scale high-efficiency fan blade manufacturing technology, can solve the problems that foam cannot provide enough support, complex molding methods, poor structural tightness, etc., and achieve light weight, high yield, and internal good tightness

Inactive Publication Date: 2015-04-01
郑伟
3 Cites 8 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0004] Method 1 (wet process): The molding method is relatively complicated, the work is difficult, and there are many processes. When the mold is closed, the workpiece needs to be trimmed, and the quality of the trimming is extremely high, and the process is more man-hours
[0005] Method 2 (pre-inv...
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Method used

Rationally divide paddle into a plurality of parts, each part is made into a separate characteristic polystyrene foam board prefabricated part, respectively inserted into different air bags, first respectively according to the polystyrene foam board prefabricated part on each air bag The shape of the fiber material is laid, and then they are closed together, and finally the whole material is laid. After the material is laid, double air nozzles or multiple air nozzles can be placed at the mouth of the air bag. After the operation of the whole oar is completed Close the mold, and the air no...
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Abstract

The invention discloses a manufacturing process of a propeller and a large efficient blade propeller of a fan. The manufacturing process comprises the following steps: preparing a necessary propeller manufacturing external die and a polystyrene cystosepiment preform, wherein the structures of the preform and the propeller to be manufactured are the same, but the size of the preform is reduced by a circle according to a ratio compared with the size of the propeller to be manufactured, and the polystyrene cystosepiment preform is manufactured for bracing the interior of a soft air bag, so that a prepreg can be conveniently paved; after sleeving the air bag outsides the polystyrene cystosepiment preform, integrally paving the prepreg outsides the air bag, and finally manufacturing the needed product by virtue of a single-air bag process or a multi-air bag process. The product has a very compact structure and is very good in structure strength and light in weight; on the aspect of procedure, the product is finished by one time, the procedure is simple, is short in consumed working hour and very high in efficiency and is capable of shortening the working hour by four fifths compared with the conventional method; on the aspect of quality, as the product is integrally finished in the die, the strength of a workpiece is very large, the finished product rate is very high, and the standardization is very good.

Application Domain

Technology Topic

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  • Manufacturing process of propeller and large efficient blade propeller of fan
  • Manufacturing process of propeller and large efficient blade propeller of fan
  • Manufacturing process of propeller and large efficient blade propeller of fan

Examples

  • Experimental program(1)

Example Embodiment

[0029] The detailed description and technical content of the present invention are described below in conjunction with the accompanying drawings. However, the accompanying drawings are only provided for reference and description, and are not used to limit the present invention.
[0030] according to Figure 5 , 6 As shown, the manufacturing process of propellers and large-scale high-efficiency fan blades adopts the hollow pressurization method: it is a new method of pressurizing inside and outside the mold, which can obtain extremely high air pressure, up to 30 standard atmospheres.
[0031] (Pre-intrusion concept; it is the raw material for epoxy resin pre-invasion of reinforced fibers in composite materials with precision pre-intrusion equipment.)
[0032] Prepare the necessary outer mold for making the propeller, and also prepare the preform of polystyrene foam board. The preform has the same structure as the propeller to be manufactured, but the size is reduced by a circle. The preform of polystyrene foam board It is made to hold up the soft air bag and facilitate the laying of pre-intrusion materials;
[0033] The outside of the polystyrene foam board preform is made into the desired product through a single air bag process or a multi air bag process.
[0034] Among them, the single-air bag manufacturing process, material laying and manufacturing process are:
[0035] Put the prepared prefabricated special polystyrene foam board into the designated air bag, and lay the fiber material on the air bag according to the shape of the prefabricated polystyrene foam board. After the laying of the entire paddle is completed, the air Place an air nozzle at the mouth of the bag and connect it to a high-pressure air pipe. After closing the mold, place it in a hydraulic press for pressure heating. The pressure is internally pressurized. After 40 minutes of heating, the mold is cooled and opened after curing. After demolding, the edge of the removed paddle is smoothed and cooled to normal temperature, and the polystyrene foam board preform is drawn out from the air bag to form the desired product.
[0036] Among them, the multi-air bag manufacturing process, material laying and manufacturing process are:
[0037] Divide the paddle into multiple parts reasonably, and each part is made into its own special polystyrene foam board prefabricated parts, and each is sleeved in different air bags, and each air bag is first carried out according to the shape of the polystyrene foam board prefabricated parts. Lay the fiber material, then close them together, and finally spread the material as a whole. After the material is spread, double air nozzles or multiple air nozzles can be placed at the mouth of the air bag, and the mold is closed after the entire paddle operation is completed. The air bag filling nozzle should be exposed outside. After all is completed, it is like a single air bag method. Put it into the mold for pressure heating. The pressure uses the internal pressure method. After 40 minutes of heating, the curing is completed Perform cooling and mold opening, and finally demold. After demolding, smooth the edge of the removed paddle and cool it to room temperature. Take out the internal air bag and polystyrene foam board preforms, and one to several reinforcements will appear inside the paddle. Ribs, thereby effectively increasing the structural strength of the product.
[0038] The foregoing descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Other equivalent changes using the patent spirit of the present invention should all belong to the patent scope of the present invention.
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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