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Bamboo piano and its manufacturing method

A manufacturing method and piano technology, applied to stringed instruments, instruments, etc., can solve the problems of incomplete appearance, poor sound quality, and inability to change the essence of the piano, and achieve a widened aesthetic concept, good reverberation effect, and short manufacturing cycle. Effect

Inactive Publication Date: 2009-04-29
郎妙金
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of the above-mentioned factors have limited the manufacture of pianos to a certain extent no matter in commerce or in the popularization of pianos.
So far, when manufacturing piano shells and soundboards, people still stay in the above-mentioned traditional technical implementation mode relying on naturally grown wood as raw materials, and the quality of the shells and soundboards is largely dependent on The texture of the wood itself is difficult to control through human factors
In addition, the materials of the piano shell and bracket (especially the exposed parts) and their patterns often represent a certain aesthetic concept. Although the piano shell made of wood can be painted into different patterns to bring various It is a visual effect on the appearance, but it can't change its "wooden" essence. Therefore, when people choose a piano, they have almost no other choice except for the wooden main structure, and they are passively stuck in the "wooden" material. aesthetic concept
For cost reasons, the brackets and shells of existing pianos are usually made of different materials, resulting in inconsistent appearance of the piano; when sound waves are reflected by different reflectors in the reverberating space, the sound quality is not good

Method used

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  • Bamboo piano and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Material selection: choose 4-year-old Yangshan moso bamboo (large-diameter moso bamboo that is exposed to sunlight for more than 6 hours, its diameter is usually 100-150 mm, and the wall thickness is about 8-15 mm) as raw material. Cut into segments according to the appropriate length;

[0026] (2) Rough processing: the sectioned moso bamboo is evenly divided into bamboo strips with an inner arc length of 15-40 mm, and the bamboo strips are planed on four sides to obtain rectangular bamboo slices in cross section. yellow removal;

[0027] (3) Bamboo chip selection: select bamboo chips with four-sided corners, no moths, and no black knots, and discard green and yellow bamboo chips;

[0028] (4) Carbonization treatment: place the qualified bamboo chips in a pressure vessel, and then pass the temperature into the pressure vessel to reach above 110°C and the pressure to reach 2kgf / cm 2The above steam is 2.5 hours, then take it out and put it into the oven, and dry it ...

Embodiment 2

[0034] According to the steps of Example 1, if the bamboo chips made have a smaller specification (such as 16 millimeters in width and 3.5 millimeters in thickness), choose bamboo chips with the same color and luster when pressing the veneer, and cut them into a length of 1510 millimeters. The two fronts of the sheet are brushed with environmentally friendly hot-pressed urea-formaldehyde resin glue, and the two ends of each group of 100 sheets are aligned and put into the press. 2 Press under the pressure of 8 minutes to get a single-layer board; when pressing the composite board, the single-layer board is divided into two veneers with a thickness of about 6-7 millimeters, and the two sides are sanded to 5.5 millimeters, and then according to the method of embodiment one method to obtain the back top plate.

Embodiment 3

[0036] According to the steps of Example 1 or 2, replace the carbonization treatment with bleaching treatment: add appropriate amount of water to 30% hydrogen peroxide solution and sodium pyrophosphite in a stainless steel bucket to prepare a bleaching solution, put the bamboo slices into the bleaching solution and boil for 1 to 3 minutes. After that, take it out and hang it to dry naturally, then put it into the oven, and dry it until the moisture content is less than 8%, so as to achieve the purpose of degreasing and color preservation, and the treated bamboo chips are light in color (basically white). It is used to make pianos with light-colored appearance.

[0037] When manufacturing components, because the wall thickness and caliber of moso bamboo are different, the bamboo chips produced are also different (thickness is usually 3-10 mm, width is usually 10-30 mm), so when pressing the veneer, it can be according to The actual situation is to press the billet.

[0038] Ac...

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Abstract

A bamboo piano and its manufacture method are disclosed. Its advantage is no need of high-quality wood.

Description

【Technical field】 [0001] The invention relates to a manufacturing method of a piano, in particular to a bamboo piano and a manufacturing method thereof. 【Background technique】 [0002] Existing piano has two kinds of structural forms, and a kind of is upright piano, and another kind is grand piano: the structure of upright piano generally comprises support and is supported on the shell plate, soundboard and pronunciation device on support, wherein support It includes at least a base, a backrest frame and a pillar, and the shell includes at least an upper front panel, a lower front panel, a side panel, a cover panel, a sky cover, a front top panel, a rear top panel and a back panel, and the sounding device includes a string and a percussion mechanism, Publication No. CN1184306A discloses a structure of an upright piano; the structure of a grand piano also includes a support, a shell plate supported on the support, a soundboard and a sounding device, wherein the support at lea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10C1/00G10C9/00
Inventor 郎妙金
Owner 郎妙金