CN100339197C - Production process for natural texture of wood surface and apparatus thereof - Google Patents
Production process for natural texture of wood surface and apparatus thereof Download PDFInfo
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- CN100339197C CN100339197C CNB2004100400725A CN200410040072A CN100339197C CN 100339197 C CN100339197 C CN 100339197C CN B2004100400725 A CNB2004100400725 A CN B2004100400725A CN 200410040072 A CN200410040072 A CN 200410040072A CN 100339197 C CN100339197 C CN 100339197C
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- solid wood
- natural texture
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Abstract
The present invention relates to a solid wood surface natural texture production technology and a device thereof. The solid wood surface natural texture production technology has the technical scheme that rotating steel wire beams are brushed, scraped, milled and stricken on solid wood, so the surface of a wood board can be subjected from scraping and damaging; then a wound surface is uniformly sandblasted by a pneumatic sandblasting device, a rough surface is cleaned, and the processed wound surface is milled and brushed finally by using a soft metal cotton cleaning wheel to obtain a glabrous solid wood material with natural texture. Compared with the prior art, the production technology has the characteristics of safe operation, convenience and science; furthermore, wooden materials with different texture and quality are used to produce materials with different properties, and the production technology can satisfy various requirements of the market. The solid wood surface of an obtain product has the natural texture, and the product can be colored as required to become antique materials or other required materials.
Description
Technical field: the present invention is a kind of solid wood top layer natural texture production technology and device, belongs to technology that plank is processed and the device of processing needs.
Background technology: the Chinese patent communique discloses " a kind of manufacture craft of fired slab antique finished wood carving " for No. 021607184, its main manufacture craft is: specific timber is cut into after the plate, oven dry, smooth, use blowtorch to plank surface torch firing then, brush in the polishing of being undertaken by the position of torch firing back and forth with iron again, burn the black charcoal until removing, the processing of carrying out some purifications again can obtain the sheet material of surface as antique finished wood carving like this; The demand of this sheet material is bigger owing to present stage, so this method can be processed into plank the material that needs more fast; Satisfy the demand in market; But the applicant finds that there are some defectives in this technology: at first it must use specific U.S.'s China fir as raw materials for production; In fact it is higher that this raw material is drawn materials is difficult, cost compares, and is difficult to satisfy the demand; Such as: when being used for making archaized architecture or being used for repairing certain heritage buildings, will be subjected to the restriction of material; Since this process limitation the scope of application of material certain shortcoming is in fact still arranged; Second: this arts demand burns sheet material oven dry back with fire-fighting; Problem with regard to existing one can keep the safety in production in process of production like this; The the 3rd: this method more complicated; Technology is restive, the bad control of the product quality that obtains, because sheet material quality difference, blowtorch ignition temperature, blowtorch mouth all are the factors that influences the manufactured goods quality to the distance of plank plate face, flame temperature or the like, and in this application and do not see how operation, the control of science, so these equipment, technology can not science be controlled, and can only lean on manual observation, control.
Summary of the invention: the objective of the invention is to: a kind of solid wood top layer natural texture production technology and device are provided, the characteristics of this technology maximum are: can use different wood materials, do not use inflammable method in the technology, technic index guarantees to have controllability with equipment simultaneously.
The present invention is achieved in that all solid wood bodies all have annual ring, wooden harder on year wheel rim, and wooden softer between the annual ring utilizes wooden soft, hard difference to carry out physical treatment.This production technology is: the steel tendon with rotation is brushed on solid wood, is scraped, grind, impact, make the plank surface be subjected to the scraping damage, the steel tendon and the solid wood of rotation move mutually, the surface of a wound degree of depth is 0.1-4mm, with pneumatic abrasive blast equipment the surface of a wound is carried out uniform blasting treatment then, with crude removing surface; With the cotton letter out wheel in soft metal the treated surface of a wound is carried out polish-brush at last and handle, obtain bright and clean solid wood material with natural texture.In this technology, determine size and the steel tendon of rotation and the speed that solid wood moves mutually of the steel tendon steel wire diameter of rotation according to the density of timber kind, be that 8-14%, the density that detects timber are 0.3g/cm at moisture content
3-0.8g/cm
3The time, gauge of wire is 0.6-3mm, the timber translational speed is per minute 4-15m; Specifically: to China fir, paulownia, white poplar isodensity is 0.3g/cm
3-0.45g/cm
3Timber carrying out the top layer when handling, gauge of wire is 0.6-1.5mm, the timber translational speed remains between the 1-4mm the wooden top layer surface of a wound degree of depth of processing at per minute 8-15m; To camwood, nanmu, camphorwood isodensity is 0.42g/cm
3-0.64g/cm
3Timber carry out the top layer when handling, gauge of wire is 1-2mm, the timber translational speed is per minute 6-12m, and the wooden top layer surface of a wound degree of depth of processing is remained between the 1-3mm.To beech, Manchurian ash, sandalwood isodensity is 0.53g/cm
3-0.76g/cm
3Timber carry out the top layer when handling, gauge of wire is 2-3mm, the timber translational speed remains between the 0.3-2mm the wooden top layer surface of a wound degree of depth of processing between per minute 4-8m.Can use pneumatic abrasive blast equipment during with crude removing surface, use the sand grains of 400-800#, the translational speed of pneumatic abrasive blast equipment is per minute 5-8m, advance per hour 0.04-0.08M of sand amount
3, blast 5-9kg/m
2Can take turns with commercially available filament among the present invention replaces the cotton letter out wheel of commercially available soft metal that the letter out processing is carried out on wooden top layer.The process units of implementing this technology is to constitute like this: equipment base (1) is gone up processing unit (plant) (2) is installed, and two equipment bases (1) middle lower portion is provided with Crane Rail (3), is placed with rail speed governing driving (4) on the Crane Rail (3); Processing unit (plant) (2) constitutes like this: the two ends of rotatable wire wheel (5) are installed on the bearing block (6), and wherein an end connects drive (7), and drive (7) connects motor (8), in the rail speed governing driving (4) working plate (10) are arranged; Rotatable wire wheel (5) constitutes like this: one by one with cushion (11) with the anchoring section of spring steel wire (12) all towards a direction along ring-type, fix uniformly, and then use hard packing sheet (13) that cushion (11) is clamped one by one, the hard packing sheet (13) that has spring steel wire (12) that will assemble at last is sleeved on the steel wire wheel axle (14) one by one, the two ends of steel wire wheel axle (14) are installed in its two ends on the bearing block (6) at last with fixture (15) locking, fixing.The diameter of spring steel wire (12) is; 0.6-3mm, shape is such: the AB section for impact, brushing work straightway, BC section be that resilience work bending section, CD section are anchoring section.In the rail speed governing driving (4) mechanical lifting gear (9) is installed, mechanical lifting gear (9) connects working plate (10), and mechanical lifting gear (9) connects mechanical control handle (16).Protective cover (17) is installed on equipment base (1), protective cover (17) surrounds processing unit (plant) (2).Rotatable wire wheel (5) can be to decompose to make, assemble, and also can be the needs typing integral manufacturing according to material width.
Through wood surface clean mark, nature, the no tool marks of this PROCESS FOR TREATMENT, wooden top layer is finished in the extremely short time in the degree of chiseling and carving that occurring in nature needs the very long years just can reach, become a kind of novel archaized decoration material.
Compared with prior art: the present invention has the characteristics of handling safety, easy, science, uses the wood materials of differing texture, quality to produce the material of different performance, can satisfy the various demands in market; The product that obtains has natural texture at its wood surface; Can be painted as required, become material modelled after an antique or other materials that needs.Do not use inflammable method in the technology, technic index guarantees to have controllability with equipment, and this production technology is compared with burning the antique finished wood carving manufacture craft, and its advantage exists: (1) has definitely avoided disaster hidden-trouble; (2) adapt to extensive, the production in enormous quantities of mechanization; (3) the production efficiency height is with low cost; (4) easy and simple to handle, (5) environment-friendly production process need not any chemical products and makes auxiliary process territory auxiliary material.
Key problem in technology among the present invention is to select for use the steel wire of different-diameter to process and screened relatively proper production process condition at the wood materials of different densities; When testing, the inventor finds:, then easily the wood surface texture is ground off or can not manifest the grain of wood, the requirement that does not also just reach product at all if produce not according to this method and condition.In more existing grinding tools, directly the linearity steel wire is clamped on the instrument article are processed, such as processing with iron brush, wire brush, the guiding theory of this instrument is to wait that the surface of grinding article polishes rapidly, polishing, so it is not all right at all being used for processing indication product of the present invention, this machining tool is because spring steel wire rotates in high speed, work simultaneously, we find: adopt conventional clamp method to be difficult to be fixed and the effect of processing undesirable, steel wire also fractures easily, comes off, hurts sb.'s feelings simultaneously; Explore through research repeatedly, find at last shape with spring steel wire be made as the AB section for impact, brushing work linearity, BC section be that resilience work bending, CD section are anchoring section.Utilize straightway to carry out work, processing in this case, and bending section can guarantee the steel wire resilience, make steel wire can have brush, scrape like this on the wood materials surface, mill, the action that impacts, in selecting the gauge of wire scope for use, steel wire can fully contact the surface of machined object and brush more accurately, scrapes, and grinds, impacts, make the plank surface be subjected to scraping damage, so and the wood grain on plank surface owing to hardlyer can not polished fully; During work: the AB section termination contact wood surface of steel wire is brushed, is scraped, mill, the action that impacts, under the elastic force effect of bending BC section on the steel wire, guarantee that the AB section is not to the such direct grinding wood surface of existing product, but under the elastic force effect of BC section, a process that postpones contact, exerts oneself is arranged, produce the action of dragging, scrape, brushing, timber is processed; This is that existing product is not available; Can make satisfactory product like this; Among the present invention, through the different processing conditions of experimental selection and obtain the different surface of a wound degree of depth, this degree of depth can guarantee that its wood grain of product that obtains manifests and is not worn away at the timber of different materials; If under this technical conditions, do not work, just do not reach the effect of invention.The applicant also finds: must adopt cushion (11) to clamp steel wire in this product and use hard packing sheet (13) to clamp cushion (11) again, otherwise be difficult to reliably steel wire be clamped, otherwise steel wire can be scattered; So-called cushion and hard packing sheet are relative, as: felt, cloth, rubber etc. are softer than metal, engineering plastics, alloy relatively, hard pad such as wooden is exactly a cushion.Rotatable wire wheel (5) can be to decompose to make, assemble, and also can be the needs typing integral manufacturing according to the timber width; In the actual mechanical process, the workman finds that if the middle part of CD section is assembled at angle of folding arbitrarily again, then steel wire is held more firm.The advantage of device provided by the invention exists: the flexible elastic force of (1) special steel wire is good, does not damage the structure of timber; (2) can avoid spring steel wire than the phenomenon that is easier to fracture, increase the service life of wire wheel from anchoring edge than hard; (3) the elastic force scope is big, even process on rough and uneven in surface outstanding timber top layer, also can only remove the soft relatively part in top layer by scraggly shape, and hard relatively part is injury-free or damaged is less; (4) the body surface no marking after processing is handled.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention, accompanying drawing 2 is structural representation vertical views of the present invention, accompanying drawing 3 is structural representations of rotatable wire wheel of the present invention (5), and accompanying drawing 4 is schematic diagrames that the present invention processes plank, and accompanying drawing 5 is structural representations of steel wire among the present invention (12).
The specific embodiment:
Embodiments of the invention 1: make processing unit (plant): hardware pedestal (1) is gone up processing unit (plant) (2) is installed, and two equipment bases (1) middle lower portion is provided with vehicle-driving rail road (3), is placed with rail speed governing driving (4) on the Crane Rail (3); Processing unit (plant) (2) constitutes like this: the two ends of rotatable wire wheel (5) are installed on the bearing block (6), and wherein an end connects drive (7), and drive (7) connects motor (8), in the rail speed governing driving (4) working metal platen (10) are arranged; Rotatable wire wheel (5) constitutes like this: use one by one felt cushion (11) with the anchoring section of 20 spring steel wires (12) all towards a direction along ring-type, fix uniformly, and then use plastics hard packing sheet (13) that cushion (11) is clamped one by one, this obtains the rotatable wire wheel (5) of 45 groups of spring steel wires (12) formation thus, the hard packing sheet (13) that has spring steel wire (12) that will assemble one by one is sleeved on the metal steel wire wheel axle (14), the two ends of steel wire wheel axle (14) are installed in its two ends on the bearing block (6) at last with fixture nut (15) locking, fixing.The diameter of the spring steel wire of installing (12) can be selected in 0.6-3mm according to the kind of converted timber; present embodiment is chosen as 0.6mm; the shape of steel wire is such: the AB section is for impacting; brushing work straightway; the BC section is a resilience work bending section; the CD section is an anchoring section; in the rail speed governing driving (4) mechanical lifting gear (9) is installed; the lift side of mechanical lifting gear (9) connects working plate (10); mechanical lifting gear (9) also connects manual mechanical control handle (16), and protective cover (17) is installed on equipment base (1); protective cover (17) surrounds processing unit (plant) (2).
Embodiments of the invention 2: the equipment base that concrete is built (1) is gone up processing unit (plant) (2) is installed, and is provided with the workbench that can move in the middle of two equipment bases (1), and this workbench can be replaced rail speed governing driving (4); Processing unit (plant) (2) constitutes like this: the two ends of rotatable wire wheel (5) are installed on the bearing block (6), and wherein an end connects drive (7), and drive (7) connects motor (8), and working plate (10) is arranged on the workbench; Rotatable wire wheel (5) constitutes like this: use one by one rubber mount (11) with the anchoring section of 16 spring steel wires (12) all towards a direction along ring-type, fix uniformly, use metallic gasket (13) that cushion (11) is clamped then one by one, obtain the rotatable wire wheel (5) that 60 groups of spring steel wires (12) constitute, the metallic gasket that has spring steel wire (12) (13) that assembles is sleeved on the steel wire wheel axle (14) one by one, the two ends of steel wire wheel axle (14) are installed in its two ends on the bearing block (6) at last with nut (15) locking, fixing.The diameter of the spring steel wire of installing in the present embodiment (12) can be selected in 0.6-3mm according to the kind of converted timber, present embodiment is chosen as 3mm, a mechanical lifting gear (9) of making according to conventional method is installed on the workbench, mechanical lifting gear (9) connects the working plate (10) that plank is made, and mechanical lifting gear (9) connects control handle (16).
The method of using: the plank that will need to process is placed on the working plate (10), working plate (10) is placed on the workbench or rail speed governing driving (4) that can move, selected according to the wood materials of determining, change the specification of the spring steel wire (12) that needs, start motor (8) then, drive (7) is rotated, rotate by bearing block (6) driven rotary wire wheel (5) then, the power supply of workbench that connection can be moved or rail speed governing driving motor, adjust the speed of advancing on demand, start working like this, steel tendon with rotation is brushed on solid wood, scrape, mill, impact, make the plank surface be subjected to the scraping damage, move mutually between the steel tendon of rotation and the solid wood, the surface of a wound degree of depth is 0.1-4mm on the timber, with pneumatic abrasive blast equipment the surface of a wound is carried out uniform blasting treatment then, with crude removing surface; With the cotton letter out wheel in commercially available soft metal the treated surface of a wound is carried out polish-brush at last and handle, just can obtain smooth surface, have the solid wood material of natural texture.
In this technology, determining size and the steel tendon of rotation and the speed that solid wood moves mutually of steel tendon steel wire diameter of rotation according to the density of timber kind, is 0.3g/cm in the density of moisture content detection timber during for 8-14%
3-0.8g/cm
3The time, gauge of wire is 0.6-3mm; Specifically: to China fir, paulownia, white poplar isodensity is 0.3g/cm
3-0.45g/cm
3Timber carrying out the top layer when handling, gauge of wire is 0.6-1.5mm, the timber translational speed remains between the 1-4mm the wooden top layer surface of a wound degree of depth of processing at per minute 8-15m; To camwood, nanmu, camphorwood isodensity is 0.42g/cm
3-0.64g/cm
3Timber carry out the top layer when handling, gauge of wire is 1-2mm, the timber translational speed is per minute 6-12m, and surface of a wound source, the wooden top layer degree of processing is remained between the 1-3mm.To beech, Manchurian ash, sandalwood isodensity is 0.53g/cm
3-0.76g/cm
3Timber carry out the top layer when handling, gauge of wire is 2-3mm, the timber translational speed remains between the 0.1-2mm the wooden top layer surface of a wound degree of depth of processing between per minute 4-8m.With pneumatic abrasive blast equipment the surface of a wound is carried out uniform blasting treatment among the present invention, can use the sand grains of 400-800# with pneumatic sand rifle during with crude removing surface, the translational speed of pneumatic abrasive blast equipment is per minute 5-8m, advance per hour 0.04-0.08M of sand amount
3, blast 5-9kg/m
2This pneumatic abrasive blast equipment can be directly installed on this device, also can install separately; Can also take turns with commercially available filament among the present invention replaces the cotton letter out wheel of soft metal that the letter out processing is carried out on wooden top layer.
Claims (11)
1, solid wood top layer natural texture production technology, steel tendon with rotation is brushed on solid wood, is scraped, grind, impact, make the plank surface be subjected to the scraping damage, the steel tendon and the solid wood of rotation moves mutually, the surface of a wound degree of depth of wood surface is 0.1-4mm, with pneumatic abrasive blast equipment the surface of a wound is carried out uniform blasting treatment then, with crude removing surface; With the cotton letter out wheel of soft metal the treated surface of a wound is carried out that polish-brush is handled at last or takes turns replacing the cotton letter out wheel of soft metal that letter out is carried out on wooden top layer handling the solid wood material that obtains having natural texture with filament; Determining size and the steel tendon of rotation and the speed that solid wood moves mutually of steel tendon steel wire diameter of rotation according to the density of timber kind, is that the density of 8-14%, detection timber is 0.3g/cm at moisture content
3-0.8g/cm
3The time, gauge of wire is 0.6-3mm, the timber translational speed is per minute 4-15m.
2, according to the described solid wood of claim 1 top layer natural texture production technology, it is characterized in that: to density is 0.3g/cm
3-0.45g/cm
3China fir, paulownia, white poplar carrying out the top layer when handling, gauge of wire is 0.6-1.5mm, the timber translational speed remains between the 1-4mm the wooden top layer surface of a wound degree of depth of processing at per minute 8-15m.
3, according to the described solid wood of claim 1 top layer natural texture production technology, it is characterized in that: to density is 0.42g/cm
3-0.64g/cm
3Camwood, nanmu, camphorwood carry out the top layer when handling, gauge of wire is 1-2mm, the timber translational speed is per minute 6-12m, and the wooden top layer surface of a wound degree of depth of processing is remained between the 1-3mm.
4, according to the described solid wood of claim 1 top layer natural texture production technology, it is characterized in that: to density is 0.53g/cm
3-0.76g/cm
3Beech, Manchurian ash, sandalwood carry out the top layer when handling, gauge of wire is 2-3mm, the timber translational speed remains between the 0.3-2mm the wooden top layer surface of a wound degree of depth of processing between per minute 4-8m.
5, according to the described solid wood of claim 1 top layer natural texture production technology, it is characterized in that: the surface of a wound is carried out uniform blasting treatment with pneumatic abrasive blast equipment, can be with pneumatic sand rifle during with crude removing surface, use the sand grains of 400-800#, the translational speed of pneumatic abrasive blast equipment is per minute 5-8m, advance per hour 0.04-0.08M of sand amount
3, blast 5-9kg/m
2
6, as the process units of any described solid wood top layer natural texture production technology among the claim 1-5, it is characterized in that: equipment base (1) is gone up processing unit (plant) (2) is installed, two equipment bases (1) middle lower portion is provided with Crane Rail (3), is placed with rail speed governing driving (4) on the Crane Rail (3); Processing unit (plant) (2) constitutes like this: the two ends of rotatable wire wheel (5) are installed on the bearing block (6), and wherein an end connects drive (7), and drive (7) connects motor (8), in the rail speed governing driving (4) working plate (10) are arranged; On the rotatable wire wheel (5) spring steel wire (12) is arranged, the diameter of spring steel wire (12) is: 0.6-3mm.
7, process units according to the described solid wood of claim 6 top layer natural texture production technology, it is characterized in that: rotatable wire wheel (5) constitutes like this: use one by one cushion (11) with the anchoring section of spring steel wire (12) all towards a direction along ring-type, fix uniformly, and then use hard packing sheet (13) that cushion (11) is clamped one by one, the hard packing sheet (13) that has spring steel wire (12) that will assemble at last is sleeved on the steel wire wheel axle (14) one by one, lock with fixture (15) at the two ends of steel wire wheel axle (14), fixing, at last its two ends are installed on the bearing block (6).
8, according to the process units of claim 6 or 7 described solid wood top layer natural texture production technologies, it is characterized in that: the shape of spring steel wire (12) is such: the AB section for impact, brushing work straightway, BC section be that resilience work bending section, CD section are anchoring section.
9, according to the process units of the described solid wood of claim 6 top layer natural texture production technology, it is characterized in that: in the rail speed governing driving (4) mechanical lifting gear (9) is installed, mechanical lifting gear (9) connects working plate (10), and mechanical lifting gear (9) connects mechanical control handle (16).
10, according to the process units of the described solid wood of claim 6 top layer natural texture production technology, it is characterized in that: protective cover (17) is installed on equipment base (1), protective cover (17) surrounds processing unit (plant) (2).
11, according to the process units of claim 6 or 7 described solid wood top layer natural texture production technologies, it is characterized in that: rotatable wire wheel (5) can be to decompose to make, assemble, and also can be the needs typing integral manufacturing according to material width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100400725A CN100339197C (en) | 2004-06-22 | 2004-06-22 | Production process for natural texture of wood surface and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100400725A CN100339197C (en) | 2004-06-22 | 2004-06-22 | Production process for natural texture of wood surface and apparatus thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1593865A CN1593865A (en) | 2005-03-16 |
| CN100339197C true CN100339197C (en) | 2007-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100400725A Expired - Fee Related CN100339197C (en) | 2004-06-22 | 2004-06-22 | Production process for natural texture of wood surface and apparatus thereof |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946084B (en) * | 2016-06-23 | 2017-11-21 | 福建农林大学 | A kind of processing method of zebra stripes China fir carbonized wood |
| CN106079007B (en) * | 2016-06-28 | 2018-06-15 | 福建农林大学 | A kind of processing method using Solid Door of the sassafras manufacture with anaglyph |
| CN106378669B (en) * | 2016-11-29 | 2018-06-26 | 福建泉州至信堂雕刻有限公司 | The production method that surface has the Anthracites of ripple skin texture |
| CN107081817B (en) * | 2017-04-14 | 2022-04-08 | 浙江裕华木业股份有限公司 | Method for processing zigzag mark antique floor and milling machine thereof |
| CN108818865A (en) * | 2018-08-02 | 2018-11-16 | 合肥德懋家居有限公司 | A kind of production system of door-plate antique-imitation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2527564B1 (en) * | 1975-06-20 | 1976-07-22 | Otfried Hasse Kg | Method and device for producing a relief corresponding to the natural structure on the surface of wood |
| CH602297A5 (en) * | 1974-09-13 | 1978-07-31 | Braun G Fa | Imitation softwood uneven surface wear producing machine |
| CN1023984C (en) * | 1990-08-21 | 1994-03-16 | 黄致良 | Process for making stereo wood grain in wood window curtain chip surface |
| CN2379250Y (en) * | 1999-07-18 | 2000-05-24 | 段梦麟 | Steel wire buffing wheel |
-
2004
- 2004-06-22 CN CNB2004100400725A patent/CN100339197C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH602297A5 (en) * | 1974-09-13 | 1978-07-31 | Braun G Fa | Imitation softwood uneven surface wear producing machine |
| DE2527564B1 (en) * | 1975-06-20 | 1976-07-22 | Otfried Hasse Kg | Method and device for producing a relief corresponding to the natural structure on the surface of wood |
| CN1023984C (en) * | 1990-08-21 | 1994-03-16 | 黄致良 | Process for making stereo wood grain in wood window curtain chip surface |
| CN2379250Y (en) * | 1999-07-18 | 2000-05-24 | 段梦麟 | Steel wire buffing wheel |
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Granted publication date: 20070926 |