CN111331697A - Bamboo filament drawing machine - Google Patents
Bamboo filament drawing machine Download PDFInfo
- Publication number
- CN111331697A CN111331697A CN202010305714.9A CN202010305714A CN111331697A CN 111331697 A CN111331697 A CN 111331697A CN 202010305714 A CN202010305714 A CN 202010305714A CN 111331697 A CN111331697 A CN 111331697A
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- China
- Prior art keywords
- roller
- area
- fixed
- bamboo
- conveyer belt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 76
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 76
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 76
- 241001330002 Bambuseae Species 0.000 title claims abstract description 74
- 239000011425 bamboo Substances 0.000 title claims abstract description 74
- 238000005096 rolling process Methods 0.000 claims abstract description 21
- 238000005452 bending Methods 0.000 claims abstract description 13
- 230000001360 synchronised effect Effects 0.000 claims abstract description 13
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 8
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims abstract description 8
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims abstract description 8
- 235000009120 camo Nutrition 0.000 claims abstract description 8
- 235000005607 chanvre indien Nutrition 0.000 claims abstract description 8
- 239000011487 hemp Substances 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000010009 beating Methods 0.000 claims description 9
- 239000010720 hydraulic oil Substances 0.000 claims description 7
- 238000007790 scraping Methods 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 19
- 238000012545 processing Methods 0.000 description 7
- 238000000227 grinding Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 235000013372 meat Nutrition 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 241000209128 Bambusa Species 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002337 anti-port Effects 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G3/00—Arrangements for removing bark-zones, chips, waste, or dust, specially designed for use in connection with wood-working machine or in wood-working plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
- B27L11/04—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like of wood wool
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a bamboo filament drawing machine, which comprises a rack and supporting legs at the bottom of the rack, wherein the rack is respectively provided with a hemp roller rolling area, an inclined roller twisting area and a bending twisting and tearing area from a feeding end to a discharging end, beat and take off the silk district, the bending is ground and is beaten the district and scrape and order the silk district, the fluted roller rolls the district and supports through the pivot and is fixed with upper and lower two-layer symmetry and synchronous pivoted roller, the skewed roller is twisted round the area and is fixed with the upper and lower two-layer synchronous pivoted skewed roller that the surface set up the chute through the pivot, the bending is turned round and is torn the district and is fixed with upper and lower two-layer synchronous pivoted fluted roller through the pivot support, the comb is scraped and is ordered the silk district and is fixed with the even board conveyer belt of longitudinal symmetry, the fixed surface of even board conveyer belt has the comb nail of multirow closely arranged, comb nail perpendicular to even board conveyer belt surface, the one end of every pivot is fixed with driven gear respectively, the gear of every layer of pivot drives the rotation. The invention can ensure the quality of the bamboo filaments and greatly improve the productivity, and effectively replaces manual extraction of the bamboo filaments.
Description
Technical Field
The invention relates to the technical field of bamboo material processing, in particular to a bamboo filament drawing machine.
Background
At present, the demand of wood is very large whether domestic or foreign, but the growth cycle of wood is very long, the reproduction rate is very low, and the demand of various fields of society can not be met completely. The only material for replacing wood is bamboo, so in recent years, various social fields have great dependence and trend on bamboo. The bamboo has the characteristics of fast growth cycle, strong reproductive capacity and high yield. The bamboos grow in tropical zone and subtropical zone, China is called as the sea of ten big bamboos and is respectively distributed in Fujian, Jiangxi, Zhejiang, Sichuan and other areas. The bamboo resource in China is quite rich, the application range of bamboo materials in various fields of recent society is increasingly enlarged, people have more and more understanding on the characteristics and the internal structure of the bamboo, the biggest innovation at present is to refine and process the bamboo materials, separate out bamboo internal ribs and filaments, and prepare bamboo coarse fibers and fine fibers by using an engineering method, a physical method and a chemical action on the bamboo filaments through high technology, so that the bamboo coarse fibers and the bamboo fine fibers are applied to textiles, medical treatment, military products, high-grade artware and living goods, and have great utilization value.
Bamboo is characterized by hardness like steel wire and softness like cotton wire, is nontoxic, harmless and environment-friendly, so the application environment is very large. However, the bamboo filaments are difficult to take out from the bamboo material, and the only existing method is manual beating and hand tearing. Each person can only extract 5-8kg every day, and the hands can be injured by bamboo filaments, under the condition, the bamboo filament drawing machine is applied.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a bamboo filament drawing machine.
In order to achieve the purpose, the technical scheme of the invention is as follows: a bamboo filament drawing machine comprises a frame and supporting legs at the bottom of the frame, wherein the frame is respectively provided with a hemp roller rolling area, an oblique roller twisting area, a bending twisting area, a beating and filament removing area, a bending rolling vibration area and a comb scraping and filament binding area from a feeding end to a discharging end in sequence, the hemp roller rolling area is fixedly provided with upper and lower layers of flower rollers which are symmetrical and rotate synchronously through a rotating shaft support, the oblique roller rolling area is fixedly provided with upper and lower layers of oblique rollers which rotate synchronously and are provided with chutes on the surface through a rotating shaft support, the bending twisting area is fixedly provided with upper and lower layers of tooth rollers which rotate synchronously through a rotating shaft support, the upper and lower layers of tooth rollers are arranged in a staggered mode to enable the upper and lower layers of tooth rollers to be adjacent, the beating and filament removing area is fixedly provided with upper and lower layers of elliptical rollers which are symmetrical and rotate synchronously and are fixed through a rotating shaft support, the upper and lower layers of curved rollers which rotate synchronously and are fixed through a rotating shaft support, and a plurality, and protruding outer end broad, comb scrape and order silk district and be fixed with even board conveyer belt of longitudinal symmetry, even board conveyer belt passes through even board conveyer belt gear motor drive rotation from top to bottom, and the fixed surface of even board conveyer belt has the comb nail of multirow closely arranged, and comb nail perpendicular to even board conveyer belt surface, the one end of every pivot is fixed with driven gear respectively, and the gear of every layer of pivot drives the rotation through the gear motor that rotates opposite direction respectively.
Furthermore, the two ends of each rotating shaft are respectively sleeved with a bearing box, the bearing boxes at the two ends of each rotating shaft on the upper layer are respectively fixed at the two ends of the adjusting arch frame on the top, the middle position of the adjusting arch frame of each rotating shaft is fixedly connected with the telescopic end at the lower end of the telescopic hydraulic oil cylinder, and the main body of the telescopic hydraulic oil cylinder is fixed in a cross beam at the top in the frame.
Further, the top of the frame is covered with a cover body.
Furthermore, the bottom of the frame is provided with a residue collecting hopper with a funnel-shaped section.
The invention can ensure the quality of the bamboo filament and greatly improve the productivity, effectively replaces manual extraction of the bamboo filament, and generally each device can replace 80-100 manual workers, thereby bringing great economic benefit to the society and great potential for the processing and development of the bamboo industry.
Drawings
The present invention will now be further described with reference to the accompanying drawings.
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic side view of the embossing roll of the present invention;
FIG. 4 is a schematic front view of the embossing roll of the present invention;
FIG. 5 is a schematic side view of the skew roller of the present invention;
FIG. 6 is a front view schematically illustrating the construction of the skew roller according to the present invention;
FIG. 7 is a side view of the toothed roller of the present invention;
FIG. 8 is a front view of the toothed roller of the present invention;
FIG. 9 is a schematic side view of an elliptical roll of the present invention;
FIG. 10 is a schematic view of the elliptical roll of the present invention in a front view;
FIG. 11 is a schematic side view of a curved roller of the present invention;
FIG. 12 is a schematic front view of a curved roller according to the present invention;
FIG. 13 is a schematic side view of a slat conveyor according to the present invention;
FIG. 14 is a schematic front view of the slat conveyor of the present invention.
Detailed Description
As shown in figures 1-14, a bamboo filament drawing machine comprises a frame 1 and supporting legs 2 at the bottom of the frame 1, wherein the frame 1 is respectively provided with a hemp roller rolling area 3, an oblique roller rolling area 4, a bending twisting area 5, a beating filament-off area 6, a bending rolling and rapping area 7 and a combing and scraping filament-binding area 8 from a feeding end to a discharging end in sequence, the hemp roller rolling area 3 is fixedly provided with upper and lower layers of symmetrical and synchronous rotating flower rollers 10 through a rotating shaft 9 in a supporting manner, the oblique roller rolling area 4 is fixedly provided with upper and lower layers of synchronous rotating oblique rollers 11 with inclined grooves on the surface through the rotating shaft 9 in a supporting manner, the bending twisting area 5 is fixedly provided with upper and lower layers of synchronous rotating toothed rollers 12 through the rotating shaft 9 in a supporting manner, the upper and lower layers of toothed rollers 12 are arranged in a staggered manner, the upper and lower layers of toothed rollers 12 are close to each other, the beating filament-off area 6 is fixedly provided with upper and lower layers of symmetrical and synchronous rotating elliptical rollers 13 through the rotating shaft 9 in a supporting manner, the bending rolling and, a plurality of projections 24 with isosceles trapezoid cross sections are evenly distributed on the outer side wall of the curved grinding roller 14, the outer ends of the projections 24 are wider, connecting plate conveyor belts 15 which are symmetrical up and down are fixed on the carding and scraping and stapling wire area 8, the connecting plate conveyor belts 15 are also common equipment, even template conveyer belt is able to adopt the chain conveyer belt to replace like 304 stainless steel chain board high temperature resistant of Ningjin county in same direction as production of exhibition net chain factory, even board conveyer belt 15 rotates through even board conveyer belt gear motor drive from top to bottom, even the fixed surface of board conveyer belt 15 has the comb nail 16 of multirow closely arranged, comb nail 16 perpendicular to even board conveyer belt 15 surface, the one end of every pivot 9 is fixed with driven gear 17 respectively, the gear of every layer of pivot 9 drives the rotation through the gear motor (not drawn) that rotate opposite direction respectively, gear motor is motor commonly used, as long as can drive driven gear 17 rotate can, the top of frame 1 covers there is the cover body 22.
When processing bamboo material, two-layer commentaries on classics roller antiport about upper and lower gear motor drives respectively, like figure 1, the commentaries on classics roller anticlockwise rotation on upper strata, the commentaries on classics roller of lower floor then clockwise rotation to centre gripping bamboo material is to the continuous motion in right side, processes the bamboo material at the in-process of constantly carrying, specifically as follows:
1. firstly, the bamboo is extruded by a plurality of pairs of rotating patterned rolls 10 which are arranged up and down through a hemp roll rolling area 3, for example, the patterned rolls with reticular bulges, pattern bulges, hemispherical bulges and the like arranged on the surface are provided, the bulges on the patterned rolls 10 are shorter than a rear toothed roll 12 and a curved rolling roll 14, the purpose is to roll the bamboo material through upper and lower rolls under the condition of not damaging the bamboo filaments, most probably, the inner bamboo meat is rolled and deformed, and the meat filaments are separated from hoops;
2. the bamboo is ground by upper and lower layers of synchronous rotating inclined rollers 11 with inclined grooves on the surfaces, the inclined grooves on the inclined rollers 11 play a role of horizontally separating the surfaces of the bamboo materials, namely, the bamboo materials are manually broken into two sides, and the purpose is to rub and grind the bamboo materials again by using the upper and lower inclined rollers under the condition of different angles under the condition that bamboo filaments and bamboo pulp in the bamboo materials are basically separated, so that the bamboo pulp and the bamboo filaments in the bamboo materials are basically loosened, the bamboo pulp basically deforms transversely and longitudinally, and a foundation is laid for the next process;
3. then rolling by an upper layer of toothed rollers 12 and a lower layer of toothed rollers 12 which synchronously rotate, and arranging the upper layer of toothed rollers 12 and the lower layer of toothed rollers 12 in a staggered way to enable the upper layer of toothed rollers 12 and the lower layer of toothed rollers 12 to be close to each other, as shown in figure 8, enabling the bamboo material passing through the position to be bent up and down and to perform the action in the vertical direction, aiming at enabling the bamboo material to be horizontally twisted and vertically torn and twisted (under the condition of not damaging bamboo filaments) to achieve that the bamboo filaments are not adhered to bamboo meat and are basically separated from;
4. then rolling by upper and lower layers of symmetrical and synchronously rotating elliptical rollers 13, aiming at beating bamboo materials by the upper and lower elliptical rollers 13 to separate bamboo pulp under the condition that bamboo filaments and bamboo pulp are not completely separated;
5. then rolling by an upper layer of curved grinding roller 14 and a lower layer of curved grinding roller 14 which are symmetrical and synchronously rotate, wherein a plurality of protrusions 24 with isosceles trapezoid cross sections are uniformly distributed on the outer side wall of the curved grinding roller 14, the outer ends of the protrusions 24 are wider, and the protrusions 24 are longer relative to the rotating roller on the front side, so that the bamboo filaments are properly rapped by the upper curved grinding roller and the lower curved grinding roller under the condition that the bamboo filaments and the bamboo pulp are not completely separated (dropped), and the bamboo pulp and the bamboo filaments are basically and completely separated;
6. finally, the bamboo filaments are scraped and thinned by comb nails 16 of an upper and lower connecting plate conveyor belt 15, so that the bamboo filaments are evenly combed and combed in one direction, the shape of the bamboo filaments is not damaged (the bamboo filaments have higher elasticity and toughness, and the bamboo filaments are disordered and lost if not combed) and then bound and packed to form raw materials of the bamboo filaments, and the raw materials can be used for next fine processing.
In order to adjust the compressing distance of the top layer of the rotating roller, the two ends of each rotating shaft 9 are respectively sleeved with a bearing box 18, the bearing boxes 18 at the two ends of each rotating shaft 9 on the upper layer are respectively fixed at the two ends of an adjusting arch frame 19 on the top, the middle position of the adjusting arch frame 19 of each rotating shaft 9 is fixedly connected with the telescopic end of the lower end of a telescopic hydraulic oil cylinder 20, the main body of the telescopic hydraulic oil cylinder 20 is fixed in a cross beam 21 at the top in the frame 1, and the rotating roller can be controlled to move downwards by controlling the extension of one telescopic hydraulic oil cylinder 20, so that the further compressing adjustment is realized.
In order to collect residues generated in bamboo material processing, a residue collecting hopper 23 with a funnel-shaped section is arranged at the bottom of the rack 1, and the residues generated in bamboo material processing can be collected through the residue collecting hopper 23, so that the subsequent processing treatment is facilitated, such as fertilizer preparation and the like.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (4)
1. The utility model provides a bamboo filament drawing machine which characterized in that: comprises a frame (1) and supporting legs (2) at the bottom of the frame (1), wherein the frame (1) is sequentially provided with a hemp roller rolling area (3), an inclined roller rolling area (4), a bending twisting area (5), a beating and thread removing area (6), a bending rolling and beating area (7) and a combing and scraping and thread removing area (8) from a feeding end to a discharging end, the hemp roller rolling area (3) is fixedly provided with upper and lower layers of symmetrical and synchronous rotating cotton rollers (10) through a rotating shaft (9), the inclined roller rolling area (4) is fixedly provided with upper and lower layers of synchronous rotating inclined rollers (11) with inclined grooves on the surfaces through the rotating shaft (9), the bending twisting area (5) is fixedly provided with upper and lower layers of synchronous rotating toothed rollers (12) through the rotating shaft (9), the upper and lower layers of toothed rollers (12) are arranged in a staggered manner, the upper and lower layers of toothed rollers (12) are tightly connected, the beating and thread removing area (6) is fixedly provided with upper and lower layers of symmetrical and synchronous rotating circular rollers (13) through the rotating shaft (9, two-layer symmetry and synchronous pivoted bent roller (14) about bent roller is fixed with through pivot (9) support in bent roller vibration district (7), it is protruding (24) that a plurality of cross-sections are isosceles trapezoid to evenly having arranged on the lateral wall of roller (14) to bend, and protruding (24) outer end broad, comb is scraped and is ordered silk district (8) and be fixed with even board conveyer belt (15) of symmetry from top to bottom, even board conveyer belt (15) rotate through even board conveyer belt gear motor drive from top to bottom, the fixed surface of even board conveyer belt (15) has comb nail (16) that the multirow closely arranged, comb nail (16) perpendicular to is even board conveyer belt (15) surface, the one end of every pivot (9) is fixed with driven gear (17) respectively, the gear of every layer of pivot (9) drives the rotation through the gear motor that the rotation direction is opposite respectively.
2. A bamboo filament drawing machine as claimed in claim 1 wherein: the two ends of each rotating shaft (9) are respectively sleeved with a bearing box (18), the bearing boxes (18) at the two ends of each rotating shaft (9) on the upper layer are respectively fixed at the two ends of an adjusting arch frame (19) on the top, the middle position of the adjusting arch frame (19) of each rotating shaft (9) is fixedly connected with the telescopic end of the lower end of a telescopic hydraulic oil cylinder (20), and the main body of the telescopic hydraulic oil cylinder (20) is fixed in a cross beam (21) on the top in the frame (1).
3. A bamboo filament drawing machine as claimed in claim 1 wherein: the top of the frame (1) is covered with a cover body (22).
4. A bamboo filament drawing machine as claimed in claim 1 wherein: the bottom of the frame (1) is provided with a residue collecting hopper (23) with a funnel-shaped section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010305714.9A CN111331697A (en) | 2020-04-17 | 2020-04-17 | Bamboo filament drawing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010305714.9A CN111331697A (en) | 2020-04-17 | 2020-04-17 | Bamboo filament drawing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111331697A true CN111331697A (en) | 2020-06-26 |
Family
ID=71179171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010305714.9A Pending CN111331697A (en) | 2020-04-17 | 2020-04-17 | Bamboo filament drawing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111331697A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202283743U (en) * | 2011-11-07 | 2012-06-27 | 福建省建瓯市昌隆实业有限公司 | Bamboo wood fiber grinding machine |
| CN102909767A (en) * | 2012-10-25 | 2013-02-06 | 国际竹藤中心 | Bamboo fibrillating-rolling device |
| US20140069776A1 (en) * | 2012-09-12 | 2014-03-13 | Laitram, L.L.C. | Belt conveyor system, roller-engagement mechanism, and related method |
| CN103991115A (en) * | 2014-03-04 | 2014-08-20 | 浙江农林大学 | Bamboo filament carding machine |
| CN212170753U (en) * | 2020-04-17 | 2020-12-18 | 山东锦旭能源科技股份有限公司 | Bamboo filament drawing machine |
-
2020
- 2020-04-17 CN CN202010305714.9A patent/CN111331697A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202283743U (en) * | 2011-11-07 | 2012-06-27 | 福建省建瓯市昌隆实业有限公司 | Bamboo wood fiber grinding machine |
| US20140069776A1 (en) * | 2012-09-12 | 2014-03-13 | Laitram, L.L.C. | Belt conveyor system, roller-engagement mechanism, and related method |
| CN102909767A (en) * | 2012-10-25 | 2013-02-06 | 国际竹藤中心 | Bamboo fibrillating-rolling device |
| CN103991115A (en) * | 2014-03-04 | 2014-08-20 | 浙江农林大学 | Bamboo filament carding machine |
| CN212170753U (en) * | 2020-04-17 | 2020-12-18 | 山东锦旭能源科技股份有限公司 | Bamboo filament drawing machine |
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Inventor after: Zang Zhenquan Inventor after: Wang Junxiang Inventor after: Pang Bin Inventor before: Wang Chunliang Inventor before: Wang Junxiang Inventor before: Pang Bin |