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A kind of preparation method of bamboo winding composite elbow

An elbow and composite material technology, which is applied in elbows, manufacturing tools, mechanical equipment, etc., can solve the problems of inability to apply bamboo winding composite elbows, poor dimensional accuracy of elbows, uneven thickness of elbows, etc., to achieve material utilization. The effect of high rate, uniform thickness and simple operation

Active Publication Date: 2019-12-10
ZHEJIANG XINZHOU BAMBOO BASED COMPOSITES TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When direct winding molding, due to the limitation of the structure of the elbow itself, the thickness of the elbow formed by fiber winding will be uneven; when hand lay-up molding, due to manual operation, the prepared elbow has poor dimensional accuracy and low preparation efficiency; stamping Forming is generally suitable for the preparation of elbows made of metal materials, but not suitable for the forming of bamboo winding composite elbows

Method used

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  • A kind of preparation method of bamboo winding composite elbow
  • A kind of preparation method of bamboo winding composite elbow
  • A kind of preparation method of bamboo winding composite elbow

Examples

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preparation example Construction

[0022] The embodiment of the present invention provides a kind of preparation method of bamboo winding composite elbow, and this method comprises the following steps:

[0023] (1) Elbow master pipe is prepared by winding at first, and the elbow master pipe is a bamboo winding composite pipe, which includes an inner lining layer, a structural layer and an outer protective layer in the radial direction from the inside to the outside;

[0024] (2) Unfold the sample, draw and cut on the elbow main pipe prepared by winding, and obtain multiple branch pipes, for example, draw a cutting line on the outer surface of the elbow main pipe prepared by winding, and cut the longitudinal section along the cutting line. Multiple trapezoidal pipes, the angle between the plane where the cutting line is located and the axial direction of the elbow main pipe is an acute angle, and two adjacent cutting lines are symmetrically distributed about the radial direction of the elbow main pipe, and the tr...

Embodiment 1

[0032] Such as Figure 1-Figure 3 As shown, this embodiment takes a 45° elbow as an example to illustrate the present invention, and its two ends are connected to the pipeline to be connected by flanges. The following are the specific preparation steps:

[0033] (1) Elbow master pipe prepared by winding (same as the process of preparing bamboo winding composite pipe)

[0034] (1.1) Bamboo fiber pretreatment: cut fresh bamboo into bamboo slices, remove green and yellow from the bamboo slices, and cut them into 1.5m long, 1mm thick, 5mm wide bamboo strips, dry the bamboo strips, and then cut 10 bamboo strips The bamboo strips are arranged in a row in parallel, and the back of the whole row of bamboo strips is lined with mesh cloth, which is stitched with a sewing machine to form a bamboo curtain. The uninterrupted bamboo curtain belt of more than tens of meters is rolled up to obtain bamboo rolls for use;

[0035] (1.2) Prepare the lining layer: coat a layer of 0.03mm thick pol...

Embodiment 2

[0042] Such as Figure 4-6 As shown, this embodiment takes a 90° elbow as an example to illustrate the present invention, and its two ends are connected to the pipeline to be connected by a socket connection method. The following are the specific preparation steps:

[0043] (1) Elbow master pipe prepared by winding (same as the process of preparing bamboo winding composite pipe)

[0044](1.1) Bamboo fiber pretreatment: cut fresh bamboo into bamboo slices, remove green and yellow from the bamboo slices, cut them into bamboo slivers with a length of 2m, a thickness of 1.2mm, and a width of 4mm, dry the bamboo strips, and then cut 12 The bamboo strips are arranged in a row in parallel, and the back of the whole row of bamboo strips is lined with mesh cloth, which is stitched with a sewing machine to form a bamboo curtain. Uninterrupted bamboo curtain belts over tens of meters are rolled up to obtain bamboo rolls for use.

[0045] (1.2) Prepare inner liner: coat a layer of 0.02m...

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Abstract

The invention discloses a preparation method for a composite elbow wrapped with bamboo. The preparation method comprises the following steps that (1) an elbow mother pipe is prepared through wrapping,and the elbow mother pipe is a composite pipe wrapped with the bamboo, sequentially comprises an inner lining layer, a structure layer and an outer protection layer from inside to outside in the radial direction; (2) the elbow mother pipe prepared through winding is marked with a line and cut, and a plurality of branched pipes are obtained; (3) the cut edges of the branched pipes are polished till the inner lining layers are exposed; (4) the branched pipes are in butt joint in sequence, the portions, at the butt joint, of the inner lining layers are pasted, and then solidification is conducted; and (5) after the inner lining layers are solidified, a fiber reinforced composite material structure layer is pasted onto the butt joint position and then solidified, after solidification, outer surface anti-corrosion treatment is conducted, and the needed elbow is prepared and obtained. According to the preparation method, operation is easy, the efficiency is high, and the elbow obtained through preparation has the advantages of being high in size precision, good in strength performance and the like.

Description

technical field [0001] The invention belongs to the field of elbow preparation, and more specifically relates to a preparation method of a bamboo winding composite elbow. Background technique [0002] Bamboo winding composite pipe is a new type of pressure product made of bamboo as the base material and thermosetting resin as the adhesive by winding technology. The composite pipe has high compressive strength, good rigidity, insulation, corrosion resistance, and good water flow performance. Light weight, easy installation, low cost, long service life and other characteristics, can be widely used in urban water supply and drainage, water conservancy, farm irrigation, petroleum sewage treatment, industrial circulating water and other fields. [0003] Elbow is a commonly used connection pipe fitting in pipeline installation. Two pipelines that are not in the same straight line can be connected through the elbow to make the pipeline turn at a certain angle. At present, there ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L43/00B27M3/00B27J1/00
CPCB27J1/00B27M3/00F16L43/00
Inventor 叶柃张淑娴孙元平李以静
Owner ZHEJIANG XINZHOU BAMBOO BASED COMPOSITES TECH
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