CN1046767A

CN1046767A - Manufacturing technique of bamboo picker stick and products thereof

Info

Publication number: CN1046767A
Application number: CN 90102428
Authority: CN
Inventors: 陈豪; 陈杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-04-23
Filing date: 1990-04-23
Publication date: 1990-11-07

Abstract

The present invention is a kind of manufacturing technique of fly-shuttle loom beating-up mechanism overpick rod and bamboo picker stick made from this high-voltage heat fixing process of being used for.The impact strength of this bamboo picker stick, static bending intensity, service life all near or reach the level of lamination wood picker stick, especially it may be noted that, this technology only need use 2 whole bamboo even the little mangosteens of carrying above (containing 2 years) adult bamboo to do raw material, rather than the machinery planing technology of the common bamboo matter picker stick of picture, the hot pressing flattening process of compressed bamboo picker stick must use the bottom large-diameter portion of perennial bamboo to be divided into raw material like that, therefore have with low cost, the advantage that has good quality, simultaneously, small investment of the present invention, process cycle is short, and is simple to operate, convenient.

Description

Manufacturing technique of bamboo picker stick and products thereof

The present invention is a kind of manufacturing technique of the picker stick on the fly-shuttle loom beating-up mechanism and bamboo picker stick made from this high-voltage heat fixing process of being used for.

At present, the picker stick that uses on the textile industry fly-shuttle loom beating-up mechanism mainly contains two kinds of bamboo matter picker stick and lamination wood picker sticks.Bamboo matter picker stick is formed by two bamboo chip gummeds through planing, because density, the hardness of bamboo chip itself are lower, the impact strength, the flexural strength that are directed at bamboo matter picker stick are relatively poor, are easy to generate phenomenons such as distortion, explosion in the use; Cemented surface is little, and bonding strength is not enough, and bamboo chip is easy to generate obscission.Owing to these a series of reasons, be generally 1.5 months the service life of bamboo matter picker stick.It is 10 centimeters heavy caliber adult bamboo that processing bamboo matter picker stick must use diameter, and at present, this material resources is in tense situation to be lacked.Another kind of lamination wood picker stick, its technical parameter is better than bamboo matter picker stick.But, because the wood chip material that uses the gear hobbing of high-quality trees for processing raw material, exists the cost height, shortcomings such as timber resources big, consume valuable consume energy.Compressed bamboo picker stick (patent of invention CN86107812A is still arranged by retrieval, Patent classificating number D03D49/38) from specification, make the raw material that uses and be not less than 850 millimeters for long, wide not in 60 millimeters, thickly be not less than 13 millimeters, action is not more than 6 millimeters, and the bamboo order is in (contain 4 years) below 8 years more than the 4 years heavy caliber bamboo of (containing 8 years), still do not solve and be becoming tight the shortcoming that cost is higher resource day.

The present invention adopts high-voltage heat fixing process, can use small-bore adult bamboo (more than 2 years, contain 2 years) and the hill bamboo as the processing base material, unqualified for the diameter of bamboo, produce the bamboo picker stick that the wooden picker stick of its technical parameter and lamination is close or surpass.Have impact strength, bending strength height, not yielding, the advantage of long service life.Especially because can utilize biennial widely bamboo of resource and little mangosteen, all has certain meaning for development and use, the protection valuable forest resources of bamboo resource as raw material.Simultaneously, the picker stick that utilizes this technology to make, owing to adopt shaper, the high pressure thermosetting is shaped, the part that must reprocess can not reach 60%.The raw material that uses is the bamboo fibre that is processed into thin bamboo strips used for weaving, and any processing bamboo chip, all filling uses in right amount of bamboo silk that produce, and raw-material utilization rate is very high.Therefore, with low cost, have bigger economic benefit.

The present invention adopts high-voltage heat fixing process, both has been different from the machinery planing technology of bamboo matter picker stick, also is different from the hot pressing flattening process of compressed bamboo picker stick, and its technological process is as follows:

Raw material bamboo-hack-go to the rascal-broken thin bamboo strip-drying-dipping-redrying-saw base-high pressure thermosetting-butt-plane limit, mill inclined-plane-perforating-paint.

The present invention is to the requirement of raw material bamboo, limit less, so long as bamboo makes the bamboo that (contains 2 years) more than 2 years, no matter diameter, short of going rotten, denaturalization phenomenon all can use.The little mangosteen of growing up also can use.

At first, bamboo is hacked, remove rascal, break into wide 8-12MM, the thin bamboo strips used for weaving of thick 1～1.5MM, force drying is handled in temperature 60-70 ℃ drying room then, and the moisture content that makes thin bamboo strips used for weaving is about 12%, then, thin bamboo strips used for weaving dropped in the phenolic resins flood, for increasing the crosslinked of resin and bamboo fibre, adopting caustic alkali catalysis is water capacity phenolic resins, phenol content 25-30%.To flood thin bamboo strips used for weaving then and put into drying room once more, temperature is controlled at and is no more than 80 ℃, and the volatile matter in the resin is got rid of, and then saws base, cuts the saw thin bamboo strips used for weaving by the size of mould, obtains putting into mould, carries out the material of high pressure thermosetting.

High-voltage heat fixing process of the present invention is divided into and gives heat and give pressure, first pressing, exhaust, high pressure thermosetting, counterdie, slowly cool off several steps.

At first, the thin bamboo strips used for weaving that saw is made is vertically arranged and is put into the steel framework mould.Die sinking length and width all slightly stay allowance to determine according to the length and width size of hitting-shuttle plate.According to the press pressure scale, can be designed to several hitting-shuttle plate parallel arranged, the thickness of mould is then accurately processed according to the hitting-shuttle plate cross sectional dimensions, therefore, can obtain the tow sides once-forming after the shaping, do not need the plate of throwing a spear of reprocessing, need carry out size, shape is accurately machined only to be four limits of hitting-shuttle plate.

First step leads to steam or utilizes electrical heating to the mould interlayer for giving heat, giving pressure, when temperature reaches 165 ℃-185 ℃, gives pressure, and pressure is 30 kg/cm, and the duration is 2-4 minute.Pressure is elevated to the 50-60 kg/cm then, exhaust 3-5 second boosts to 100 kg/cm at last, stops pressurization, keeps temperature, keep-ups pressure, and be 30 minutes whole process time.The step-down demoulding then, insulation allows the plate of throwing a spear slowly lower the temperature, and eliminates internal stress.

At this moment product one-shot forming face has reached 60%, and positive and negative two planes of the plate of throwing a spear are all molded, must fine finishining, plate two is according to figure paper size trimming as long as will throw a spear, and four jiaos in garden is repaiied on adjustable cast iron planes four limits, mill out hypotenuse, perforating, paint, promptly finish whole technologies, make bamboo picker stick.

Bamboo picker stick manufacturing technique of the present invention is simple, and the process-cycle is short, can utilize resourceful small-bore bamboo and little mangosteen to do raw material.Adopt high-voltage heat fixing process to solidify the thin bamboo strips used for weaving moulding, produced a kind of picker stick of new material, its institutional framework, physico-mechanical properties and even chemical property all are different from natural bamboo.It has higher mechanical strength, low coefficient of friction and good abrasive resistance.The density of bamboo picker stick is 1.1-1.3 gram/cubic centimetre, impact strength be the 110-135 kilogram-metre/square metre, measure with A1 type picker stick, individual cigarette weight is the 550-650 gram.

Because common bamboo picker stick compressed bamboo picker stick needs to reach 10 centimeters bamboo wood with diameter and does raw material, often heavy caliber bamboo also have only one section of close root available.By contrast, the not only single utilization rate of bamboo of bamboo picker stick of the present invention is higher than other more than 5 times, and more owing to can use small-bore bamboo and little mangosteen to be base material, therefore with low cost, wide material sources have certain economic and are worth.

The density of bamboo picker stick of the present invention, impact strength, shearing strength or the like performance, near lamination wood picker stick, and cost is lower by 30% than it.

The bamboo fibre base material that high-voltage heat fixing process of the present invention and this technology are utilized also can be used for making other textile equipments, as side plate etc.

The present invention is further illustrated below in conjunction with embodiment.

Lamination wood picker stick has A, B, C, D, E, F, tens specifications of seven kinds of models of G, and bamboo matter picker stick has A, B, C, D, tens specifications of four kinds of models, and this embodiment makes bamboo matter A1 type picker stick.

Select bamboo more than 2 years for use, hack and remove rascal, break into wide 8-12MM, the thin bamboo strips used for weaving about thick 1-1.5MM is sent temperature to and is controlled at force drying in the drying room between 60-65 ℃, and the moisture content of thin bamboo strips used for weaving is reduced to about 12%.Drop into dipping (phenol content 25%) in the water capacity phenolic resins then, send into the drying room drying behind the dipping once more, temperature is controlled at about 80 ℃, and the solvent evaporates in the resin is fallen, and moisture content is reduced to below 12% once more.

To become every section 785MM through the thin bamboo strips used for weaving sawing that impregnation drying is handled then, vertically arrange the mould of putting into 140 t hydraulic press.This mould can individual layer mold pressing A1 arranged side by side type picker stick 3, and mould is the steel framework type, die sinking planar dimension 175MM * 785MM, and cross section is accurately processed according to the throw a spear cross sectional dimensions of plate of A1 type.

At first, logical steam gives heat to 165 ℃ with mould, gives pressure, and pressure is 30 kg/cm, 3 minutes duration.Boost to 60 kg/cm again, exhaust 3-5 second boost to 100 kg/cm again, temperature remains on about 165 ℃, keeps the pressure of 100 kg/cm, 20 minutes duration, slowly cooling 2 hours of the step-down demoulding then, insulation.At last sheet forming is sawn into width and is three of 56MM, clip two, making every length is 765MM, digs the limit, mills the inclined-plane, and angle, garden, perforating, paint are promptly finished whole process.

Claims

1, a kind of mao bamboon is processed into thin bamboo strips used for weaving, makes the manufacturing technique of bamboo picker stick again by drying, dipping, redrying, saw base, high pressure thermosetting, broken end, the perforating of plane limit, painting technology, it is characterized in that high-voltage heat fixing process comprises:

1.1, will be processed into the about 8-12mm of width, the thin bamboo strips used for weaving of thick about 1-1,5mm, force drying is handled under temperature 60-70 ℃ condition, and its moisture content is reached about 12%;

1.2 being placed in the water capacity phenolic resins, dried thin bamboo strips used for weaving floods, and then force drying, temperature is controlled at and is no more than 80 ℃;

1.3, impregnated thin bamboo strips used for weaving vertically arranged puts into mould, utilize steam or electrical heating mould, temperature is controlled between 165 ℃-185 ℃, give pressure, pressure is 30 kg/cm, and the time is 2-4 minute, boost again and reach the 50-60 kg/cm, then exhaust 3-5 second, boost to 100 kg/cm again, stop pressurization, temperature is controlled between 165 ℃-185 ℃, heat-insulation pressure keeping is cured, and the whole process time is about 30 minutes;

1.4, the step-down demoulding, be incubated behind the machine under the picker stick, slowly carry out fine finishining after the cooling and handle.

2, a kind of manufacturing technique by the described picker stick of claim 1 is characterized in that using the thermosetting of mould high pressure, and its plane gradient is 5 ', one-shot forming face reaches about 60%;

3, a kind of picker stick of making by the described technology of claim 1 is characterized in that using the bamboo fibre base material that is processed into thin bamboo strips used for weaving or bamboo bar, bamboo silk;

4, a kind of picker stick of making by claim 1,2 described technologies is characterized in that density is 1.1-1.3 gram/cubic centimetre, impact strength be the 110-135 kilogram-metre/square metre, every weight is that 550-650 restrains.