CN1220204A

CN1220204A - Mould forming wooden product processing method

Info

Publication number: CN1220204A
Application number: CN 97122082
Authority: CN
Inventors: 费恺
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-12-19
Filing date: 1997-12-19
Publication date: 1999-06-23

Abstract

The present invention relates to a method for producing wooden product by using mould-forming process, including the following steps: sawing and cutting small-diameter wood, removing exostosis,soaking in water and steaming to make softening treatment, using twisting machine to make twisting treatment or hammering to primarily dissociate wood fibre, then using roller to roll the above-mentioned material to obtain the wood chip, drying the wood chip to water content 8-13%, then applying urea-formaldehyde resin or phenolic resin glue, finally placing the above-mentioned material in the mould, heating and pressing to form the invented plate material, squared timber and various bent wooden products for making various furnitures.

Description

A kind of woodwork processing method of compression molding

The present invention relates to a kind of woodwork processing method of compression molding, it can make full use of small diameter grade timber, fast growing wood and a bifurcation material, makes the various bending-wood section bars of sheet material, square bar or making furniture through the processing method of compression molding.

Timber has the intensity height, indeformable, many advantages such as good heat insulating, therefore in building construction, as door, window, floor, the table in the furniture manufacturing, chair, bed etc. are occupied an leading position always, people are growing to the demand of timber, but the supply of timber, in particularly can be used for building and the supply of big footpath level high-quality timber in the furniture manufacturing but be very limited, the contradiction between the timber supply and demand is constantly enlarged.How to alleviate the contradiction between the timber supply and demand, the supply that increases timber just becomes people's problem demanding prompt solution.

The woodwork processing method that the purpose of this invention is to provide a kind of compression molding, it can make full use of existing small diameter grade timber, thinnings, fast growing wood and a bifurcation material useless or that purposes is little and make the various section bars that useful sheet material, square bar and manufacturing bentwood furniture are used through the processing method of compression molding, increase the supply of timber, improve the utilization rate of timber, alleviate the imbalance between supply and demand of current timber confession, improve the economic worth of timber.

The technological process of production of the woodwork processing method of this compression molding is:

One, wooden comb is removed in segment: the length sawing of various small diameter grade timber, a bifurcation material being pressed processing request becomes section, and removes wooden comb;

Two, the softening processing: the cork that sawing is become section, be soaked in water as poplar and made it softening in 20～72 hours, or hardwood after the sawing such as Qu Liumu section be soaked in water earlier 20～72 hours, hot digestion again, 80～100 ℃ of water temperatures, digestion time 1～3 hour its objective is that to make moisture content even, remove internal stress, make wooden softening;

Three, distortion or hammering: the juggle after softening the processing is carried out axial twist with the distortion machine, wood-fibred is tentatively dissociated and slough bark, distortion is the two ends that utilize the jig at distortion machine two ends chucking juggle, rotate to both forward and reverse directions, or wood-fibred is tentatively dissociated with the hammering method, these two kinds of methods can be used separately, also can and use;

Four, roll in flakes: the wood-fibred section of tentatively dissociating after distortion or the hammering is put between the pair roller of roll squeezer by rolling, make log not destroy flattening-out, cracking along its length under the situation of cross section, roll repeatedly through too much group different gap pair roller and be processed into 5～35mm wood chip;

Five, drying: put into drying kiln for drying rolling the wood chip that processes, 80～100 ℃ of baking temperatures, 10～60 minutes time, make the moisture content of wood chip reach 8%～13%, or use the dielectric drying method, 10～15 minutes drying times, moisture content reaches 8%～13%;

Six, applying glue: dried wood chip is soaked with 10～30% Lauxite or phenolic resins, and resin added accounts for 8～15% of wood chip weight, and soak time depends on dried thickness, is generally 10～40 seconds;

Seven, compression molding: the wood chip after the applying glue, put into the mould inner mould of woodwork and press hot briquetting, heating of mode of heating used vapour or high-frequency heating, molding temperature is 110～140 ℃, clamp time 5～30 minutes, 10～15 minutes dwell times, pressure 3～4MPa, 10～20 minutes high-frequency heating time; The goods such as various section bars that moldable one-tenth plank, floor, square bar or making bentwood furniture are used.

The present invention has following major advantage:

1. can extensively utilize the useless materials such as various small diameter grade timber, thinnings, a bifurcation material in forest farm, or the little material inferior of purposes, make the excellent usefulness of bad material, improve its use value, increase economic benefit;

2. improve the utilization rate of timber, even the big footpath of general timber level timber is made woodwork by log, its utilization rate generally is about 40%, the highlyest is no more than 70%, and utilize compression-moulding methods of the present invention, even its utilization rate of small diameter grade timber can reach more than 85%;

3. the woodwork that utilizes the present invention to produce, indeformable except remaining with the superperformance of common wood as the intensity height, outside the good heat preservation performance, also have good stability, non-warping, do not ftracture, its density and intensity can increase or reduce according to designing requirement;

4. utilize the method for compression molding can once molding formedly make how crooked shape, multidirectional according to the requirement of product design, as up and down or to the left and right crooked, flexibility is unrestricted, and this is that existing timber institute is irrealizable.

Embodiment one

Small diameter grade poplar material is removed wooden comb, become section by processing length requirement sawing, juggle after the sawing is put into the pond, with cold water soak 70 hours, make it softening, juggle after soaking is carried out axial twist with the distortion machine, wood-fibred is tentatively dissociated, slough bark, juggle after the distortion processing is put into roll squeezer, be processed into thickness 10mm wood chip through repeatedly rolling, put into the hothouse inner drying rolling the wood chip that processes, 95 ℃ of baking temperatures, 20 minutes time, make the moisture content of wood chip reach 10%, the wood chip after drying is handled soaks applying glue with 15% Lauxite, and resin added accounts for wood chip weight 10%, 10 seconds of applying glue time, it is molded that wood chip after again applying glue being handled is put into the timber floor mould inner mould, 120 ℃ of molding temperatures, clamp time 6 minutes, 10 minutes dwell times, pressure 4MPa, in the japanning of the floor surface of compression molding, the timber floor goods.

Embodiment two

Small diameter grade Qu Liumu material is removed wooden comb, become section by processing length requirement sawing, juggle after the sawing is put into the pond, with bubble 24 hours, and then hot digestion, 90 ℃ of water temperatures, 3 hours time, make it softening, juggle after the boiling is carried out axial twist with the distortion machine, wood-fibred is tentatively dissociated, slough bark, juggle after the distortion processing is put into roll squeezer, be processed into thickness 30mm wood chip through repeatedly rolling, rolling the wood chip that processes dielectric drying method drying, 15 minutes drying times, make the moisture content of wood chip reach 10%, wood chip after drying handled is with 12% phenolic resins immersion applying glue, and resin added accounts for wood chip weight 12%, 12 seconds of applying glue time, it is molded that wood chip after again applying glue being handled is put into system furniture bending-wood spare mould inner mould, 130 ℃ of molding temperatures, clamp time 6 minutes, 15 minutes dwell times, pressure 4MPa makes the bentwood furniture section bar.

Claims

1. the woodwork processing method of a compression molding is characterized in that its technological process of production is:

(1) wooden comb is removed in segment: the length sawing of various small diameter grade timber, a bifurcation material being pressed processing request becomes section, and removes wooden comb;

(2) the softening processing: sawing is become the cork of section, and being soaked in water as poplar made it softening in 20～72 hours;

(3) distortion or hammering: the juggle after softening the processing is carried out axial twist with the distortion machine, wood-fibred is tentatively dissociated and slough bark, distortion is the two ends that utilize the jig at distortion machine two ends chucking juggle, rotate to both forward and reverse directions, or wood-fibred is tentatively dissociated with the hammering method, these two kinds of methods can be used separately, also can and use;

(4) roll in flakes: the wood-fibred section of tentatively dissociating after distortion or the hammering is put between the pair roller of roll squeezer by rolling, make log not destroy under the situation of cross section flattening-out along its length, cracking, the too much group of warp different gap pair roller rolls repeatedly and is processed into 5～35mm wood chip;

(5) drying: put into drying kiln for drying rolling the wood chip that processes, 80～100 ℃ of baking temperatures, 10～60 minutes time made the moisture content of wood chip reach 8%～13%;

(6) applying glue: dried wood chip is soaked with 10～30% Lauxite, and resin added accounts for 8～15% of wood chip weight, and soak time depends on dried thickness, is generally 10～40 seconds;

(7) compression molding: the wood chip after the applying glue, put into the mould inner mould of woodwork and press hot briquetting, the heating of mode of heating used vapour, molding temperature is 110～140 ℃, clamp time 5～30 minutes, 10～15 minutes dwell times, pressure 3～4MPa.

2. according to the described woodwork processing method of claim 1, it is characterized in that the good hardwood section of sawing was soaked in water 20～72 hours, put into boiling pond hot digestion again, 80～100 ℃ of water temperatures, 1～3 hour time made it softening.

3. according to the described woodwork processing method of claim 1, it is characterized in that with the hammering method wood-fibred tentatively being dissociated.

4. according to the described woodwork processing method of claim 1, it is characterized in that using the dielectric drying method, do 10～15 minutes quick-fried time, make the moisture content of wood chip reach 8～13%.

5. according to the described woodwork processing method of claim 1, it is characterized in that dried wood chip is soaked applying glue with 10～30% phenolic resins, resin added accounts for wood chip weight 8～15%, 10～60 seconds time.