CN114525619A - Jacquard double-faced circular weft knitting machine - Google Patents
Jacquard double-faced circular weft knitting machine Download PDFInfo
- Publication number
- CN114525619A CN114525619A CN202210173601.7A CN202210173601A CN114525619A CN 114525619 A CN114525619 A CN 114525619A CN 202210173601 A CN202210173601 A CN 202210173601A CN 114525619 A CN114525619 A CN 114525619A
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- CN
- China
- Prior art keywords
- hole
- yarn
- jacquard
- guider
- knitting machine
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- 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.)
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
- D04B15/80—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the thread guides used
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J7/00—Cleaning, e.g. removing dust, loose fibres, charred ends
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
- D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
- D04B15/70—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used in flat-bed knitting machines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The invention discloses a jacquard double-sided circular weft knitting machine, which belongs to the field of weft knitting machines, and is characterized in that yarns are delivered to a yarn feeding component and a jacquard component after coming out of a jacquard yarn storage device and passing through a yarn guiding and dust removing component; the yarn guiding and dust removing component comprises a fixing ring and a plurality of guides; the yarn adopts the mode of giving vent to anger when the director makes fibre and yarn separation, then clears up the fibre through the mode of breathing in to make when guaranteeing yarn tensioning and smooth yarn that advances, the effectual fibre of avoiding adsorbs, thereby improve the jacquard weave quality.
Description
Technical Field
The invention relates to the field of weft knitting machines, in particular to a jacquard double-faced circular weft knitting machine.
Background
The jacquard is a concave-convex pattern formed by interlacing warp and weft of the textile. The textile categories are numerous, and jacquard fabrics are one of the major categories. The jacquard fabric can be divided into home textile fabric and fashion fabric, and as early as the ancient silk road, the Chinese silk is known in the world in a jacquard weaving mode. Embroidery is only a decoration, common embroidery is plain-weave encrypted cloth, jacquard weave is high-grade, the requirement for cotton yarn by the pattern can be high, the cotton yarn with inferior quality cannot be provided with formed patterns, and the jacquard weave is divided into plain weave jacquard weave and twill weave. According to the standard of a jacquard double-sided circular weft knitting machine, the yarn guide needs to be smooth and not hang fibers.
The yarn guide mainly has the functions of turning yarns and ensuring the tensioning of the yarns, and simultaneously ensuring the smoothness of the fed yarns. However, the conventional yarn guide generally ensures the smoothness degree by arranging a smooth guide surface, but due to the friction between fibers and the yarn guide, equipment and other reasons, the yarn guide is easy to be electrostatically charged to adsorb the fibers, the fibers are easily accumulated to cause unsmooth yarn outlet, and the fibers are easily woven along with the entering of the yarns to influence the jacquard quality.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a jacquard double-sided circular weft knitting machine which effectively avoids fiber adsorption while ensuring that yarns are tensioned and smoothly fed, thereby improving the jacquard quality.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a jacquard double-sided circular weft knitting machine which comprises a yarn feeding assembly and a jacquard assembly for spinning, and further comprises a jacquard yarn storage device and a yarn guiding and dust removing assembly for supplying yarns, wherein the yarns are delivered to the yarn feeding assembly and the jacquard assembly after coming out of the jacquard yarn storage device and passing through the yarn guiding and dust removing assembly; the yarn guiding and dust removing component comprises a fixing ring and a plurality of guides; the guide device comprises a plurality of guides, a fixing ring and a plurality of air blowing holes, wherein the guides are rotatably connected with the fixing ring, each air blowing hole is formed in the middle of each guide, the upper side and the lower side of the fixing ring are provided with a plurality of air blowing holes, the air blowing holes are located at two ends of each air blowing hole, a flow guide hole is formed in the side wall of the middle of each guide, an air suction hole is formed in the middle of the fixing ring, and two ends of each flow guide hole are communicated with the corresponding air suction hole.
The invention has the preferable technical scheme that a plurality of mounting grooves are equidistantly arranged on the outer side wall of the fixing ring, clamping grooves are formed in two sides of each mounting groove, rotating shafts matched with the clamping grooves are arranged on two sides of the guider, and the rotating shafts are rotatably connected into the clamping grooves.
The invention has the preferable technical scheme that the outer side wall of the guider is an arc surface, the installation groove is correspondingly provided with the arc surface matched with the installation groove, a ventilation gap is arranged between the outer side wall of the guider and the inner wall of the installation groove, the width of the ventilation gap is the same everywhere when the guider is positioned in the vertical direction, and the width of the ventilation gap is gradually increased from one end to the other end when the guider is inclined.
The invention has the preferable technical scheme that guide plates are arranged at two ends of the guider and are positioned at one side far away from the air blowing hole, so that air sprayed from the air blowing hole enters the wire passing hole under the blocking action of the guide plates.
The invention has the preferable technical scheme that the blowing direction of the blowing hole is along the horizontal direction, and when the guider is inclined, the guide plate at one end far away from the blowing hole can still block the air blown out horizontally by the blowing hole.
The invention has the preferable technical scheme that the rotating shaft is positioned in the middle of the guider so as to ensure that the rotating angles of the guider towards two ends are consistent; and the centers of the air suction holes and the through holes are also positioned at the axial position of the rotating shaft, so that the contact ratio of the air suction holes and the flow guide holes is kept highest when the guider rotates.
The invention preferably adopts the technical scheme that the aperture of the air suction hole is larger than that of the air blowing hole.
The invention has the preferable technical scheme that the upper end and the lower end of the mounting groove are provided with semicircular notches, the air blowing hole is positioned in the middle of the semicircular notch, the guide plate is in an arc shape with an angle larger than 180 degrees, edges of two sides of the guide plate extend into the semicircular notch, and the radius of the guide plate is smaller than that of the semicircular notch.
The invention preferably adopts the technical scheme that the ventilation gap is communicated with the gap between the interior of the semicircular notch and the guide plate.
The invention has the beneficial effects that:
according to the jacquard double-sided circular weft knitting machine, yarns are delivered out of the jacquard yarn storage device, then are conveyed to the yarn feeding assembly and the jacquard assembly through the yarn guiding and dust removing assembly; the yarn guiding and dust removing component comprises a fixing ring and a plurality of guides; the yarn adopts the mode of giving vent to anger when the director makes fibre and yarn separation, then clears up the fibre through the mode of breathing in to make when guaranteeing yarn tensioning and smooth yarn that advances, the effectual fibre of avoiding adsorbs, thereby improve the jacquard weave quality.
Drawings
FIG. 1 is a general schematic view of a jacquard double-sided circular weft knitting machine provided in an embodiment of the present invention;
figure 2 is a schematic view of a yarn guide and dust removal assembly provided in an embodiment of the present invention;
FIG. 3 is a detailed structural schematic diagram of a guide provided in an embodiment of the present invention;
in the figure:
1. a fixing ring; 2. a guide; 3. a jacquard yarn storage device; 4. a yarn feeding assembly; 5. a jacquard assembly; 10. a yarn guide and dust removal component; 11. a semicircular notch; 12. a gas blowing hole; 13. mounting grooves; 14. a suction hole; 15. a card slot; 21. a wire passing hole; 22. a flow guide hole; 23. a rotating shaft; 24. a baffle.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1-3, the present embodiment provides a jacquard double-sided circular weft knitting machine, which includes a yarn feeding assembly 4 and a jacquard assembly 5 for weaving, and further includes a jacquard yarn storage 3 and a yarn guiding and dust removing assembly 10 for supplying yarns, wherein yarns are delivered from the jacquard yarn storage 3 to the yarn feeding assembly 4 and the jacquard assembly 5 via the yarn guiding and dust removing assembly 10; the yarn guiding and dust removing component 10 comprises a fixing ring 1 and a plurality of guides 2; a plurality of 2 directors all with solid fixed ring 1 rotates to be connected, every 2 middle parts of the directors all are provided with line hole 21, both sides all are provided with a plurality of gas hole 12 about solid fixed ring 1, gas hole 12 is located cross the both ends of line hole 21, 2 middle part lateral walls of the directors are provided with water conservancy diversion hole 22, gu fixed ring 1 middle part is provided with suction hole 14, the both ends intercommunication of water conservancy diversion hole 22 cross line hole 21 with suction hole 14. The yarn passes through the smooth yarn passing hole 21 in the guider 2, enters the air blowing hole 12 before entering the yarn passing hole 21 and when coming out, and the fiber attached to the surface of the yarn can be separated under the action of air blowing. The fibers are then sucked away through the suction holes 14. preferably, the suction holes 14 may be provided with a suction pump, a fiber filter, etc. as necessary, and will not be described further herein. Therefore, when the yarn is tensioned and smoothly fed, the fiber adsorption is effectively avoided, and the jacquard quality is improved.
Preferably, the equidistance of the outer side wall of the fixing ring 1 is provided with a plurality of mounting grooves 13, the two sides of each mounting groove 13 are provided with clamping grooves 15, the two sides of the guider 2 are provided with rotating shafts 23 matched with the clamping grooves 15, and the rotating shafts 23 are rotatably connected in the clamping grooves 15. The guider 2 rotates in the clamping groove 15, so that the installation angle can be adjusted, the yarn outgoing at each angle can be better adapted, and the yarn outgoing fluency can be ensured.
In order to ensure that separated fibers can be effectively collected, the outer side wall of the guider 2 is an arc surface, the mounting groove 13 is correspondingly provided with the arc surface matched with the installation groove, a ventilation gap is arranged between the outer side wall of the guider 2 and the inner wall of the mounting groove 13, the width of the ventilation gap is the same everywhere when the guider 2 is in the vertical direction, and when the guider 2 inclines, the width of the ventilation gap is gradually increased from one end to the other end. The outer surface of the guider 2 adopts a cambered surface design, so that the ventilation gap can be wrapped on the periphery of the wire passing hole 21 along the circumference, and separated fibers can be sucked into the air suction holes 14 in all directions.
Further, the guide plates 24 are arranged at two ends of the guide 2, and the guide plates 24 are located at one side far away from the air blowing hole 12, so that air sprayed from the air blowing hole 12 enters the wire passing hole 21 under the blocking effect of the guide plates 24. The baffle 24 serves to concentrate the air flow while allowing the air flow to encircle the yarn in multiple orientations, thereby allowing the fibers on the yarn to be more easily separated. Meanwhile, when the guider 2 inclines, the guide plate 24 can guide gas into the yarn passing hole 21, so that the gas can be fully contacted with the yarn, meanwhile, the yarn can be contacted with the end part of the guider 2 when entering the yarn passing hole 21, and the acting force can also ensure that the impurity fibers are better separated from the yarn.
Further, the blowing direction of the blowing hole 12 is along the horizontal direction, and when the guide 2 is inclined, the guide plate 24 at the end far away from the blowing hole 12 can still block the air blown out horizontally by the blowing hole 12. The guide plates 24 at both ends allow air to blow into the through-hole 21, thereby preventing the fibers from flying into the air. Meanwhile, the fiber can be better discharged from the air suction holes 14 due to the positive and negative air pressure difference under the action of the middle air suction holes 14. When the guider 2 is inclined, the ventilation gap at one end is reduced, but at the moment, the air of the section is mostly introduced into the wire through hole 21 under the action of the guide plate 24, the overflow air is reduced, and therefore, the reduction of the ventilation gap can not cause the fibers with insufficient suction force to fly into the air. And the ventilation clearance increase of the other end, this end guide plate 24 slope, and the gaseous reduction in getting into the line hole 21 makes the gas balance point move down under the powerful air current effect of the other end simultaneously, and the fibre has the possibility that overflows line hole 21, and the ventilation clearance of expanding just can compensate this shortcoming for the fibre that the overflow came out can in time be through the ventilation clearance suction hole 14 in, guarantee that the fibre effectively gets rid of.
Preferably, the rotating shaft 23 is located in the middle of the guider 2, so that the rotating angles of the guider 2 to the two ends are consistent; and the centers of the air suction holes 14 and the through holes are also positioned at the axial position of the rotating shaft 23, so that the overlapping degree of the air suction holes 14 and the diversion holes 22 is kept highest when the guider 2 rotates. When the guider 2 rotates, the air suction hole 14 can provide larger suction force at any time to lead the air in the wire through hole 21 out, and the suction force is not reduced due to rotation.
Further, the aperture of the air suction hole 14 is larger than that of the air blowing hole 12. A greater suction force can be provided and the blow holes 12 need only provide a small but high impact force gas directed at the yarn.
In order to control the fiber to be stably sucked by the suction hole 14, the upper end and the lower end of the mounting groove 13 are provided with semicircular notches 11, the blowing hole 12 is positioned in the middle of the semicircular notch 11, the guide plate 24 is in an arc shape with an angle larger than 180 degrees, edges on two sides of the guide plate 24 extend into the semicircular notch 11, and the radius of the guide plate 24 is smaller than that of the semicircular notch 11. The gas that gas hole 12 blew out partly gets into in the line hole 21 under the effect of guide plate 24, and another part is along guide plate 24 cambered surface to spread all around, because guide plate 24 radian is greater than 180 degrees, and guide plate 24 edge is located semicircle breach 11, and gas gets into semicircle breach 11 after the water conservancy diversion, makes it have the clearance owing to the radius difference to can communicate with the clearance of ventilating, make and get into in the suction opening 14 smoothly through the clearance of ventilating. The ventilation gap is communicated with the gap between the inside of the semicircular notch 11 and the guide plate 24.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (9)
1. A jacquard double-sided circular weft knitting machine is characterized in that:
the yarn feeding device comprises a yarn feeding component (4) and a jacquard component (5) for spinning, and further comprises a jacquard yarn storage device (3) and a yarn guiding and dust removing component (10) for supplying yarns, wherein yarns are delivered to the yarn feeding component (4) and the jacquard component (5) after coming out of the jacquard yarn storage device (3) and passing through the yarn guiding and dust removing component (10);
the yarn guide and dust removal assembly (10) comprises a fixed ring (1) and a plurality of guides (2); a plurality of director (2) all with gu fixed ring (1) rotates to be connected, every director (2) middle part all is provided with line hole (21), gu both sides all are provided with a plurality of blow hole (12) about fixed ring (1), blow hole (12) are located cross the both ends of line hole (21), director (2) middle part lateral wall is provided with water conservancy diversion hole (22), gu fixed ring (1) middle part is provided with suction hole (14), the both ends intercommunication in water conservancy diversion hole (22) cross line hole (21) with suction hole (14).
2. A jacquard double-sided circular weft knitting machine according to claim 1, characterized in that:
gu fixed ring (1) lateral wall equidistance is provided with a plurality of mounting groove (13), mounting groove (13) both sides are provided with draw-in groove (15), director (2) both sides be provided with draw-in groove (15) complex pivot (23), pivot (23) rotate connect in draw-in groove (15).
3. A jacquard double-sided circular weft knitting machine according to claim 2, characterized in that:
the outer side wall of the guider (2) is an arc surface, the mounting groove (13) is correspondingly provided with the arc surface matched with the mounting groove, a ventilation gap is arranged between the outer side wall of the guider (2) and the inner wall of the mounting groove (13), the width of the ventilation gap is the same everywhere when the guider (2) is in the vertical direction, and when the guider (2) is inclined, the width of the ventilation gap is gradually increased from one end to the other end.
4. A jacquard double-sided circular weft knitting machine according to claim 3, characterized in that:
guide plates (24) are arranged at two ends of the guider (2), and the guide plates (24) are positioned on one side far away from the air blowing hole (12) so that air sprayed out of the air blowing hole (12) enters the wire passing hole (21) under the blocking effect of the guide plates (24).
5. A jacquard double-sided circular weft knitting machine according to claim 4, characterized in that:
the blowing direction of the blowing hole (12) is along the horizontal direction, and when the guider (2) is inclined, the guide plate (24) at one end far away from the blowing hole (12) can still block air blown out horizontally by the blowing hole (12).
6. A jacquard double-sided circular weft knitting machine according to claim 2, characterized in that:
the rotating shaft (23) is positioned in the middle of the guider (2) so as to enable the rotating angles of the guider (2) towards the two ends to be consistent; and the centers of the air suction holes (14) and the through holes are also positioned at the axial line position of the rotating shaft (23), so that the contact ratio of the air suction holes (14) and the flow guide holes (22) is kept highest when the guider (2) rotates.
7. A jacquard double-sided circular weft knitting machine according to claim 1, characterized in that:
the aperture of the air suction hole (14) is larger than that of the air blowing hole (12).
8. A jacquard double-sided circular weft knitting machine according to claim 4, characterized in that:
the upper and lower both ends of mounting groove (13) are provided with semicircle breach (11), gas hole (12) are located semicircle breach (11) middle part, guide plate (24) are the arc shape that the angle is greater than 180 degrees, just the both sides edge of guide plate (24) all extends to in semicircle breach (11), guide plate (24) radius is less than the radius of semicircle breach (11).
9. A jacquard double-sided circular weft knitting machine according to claim 8, characterized in that:
the ventilation gap is communicated with the gap between the interior of the semicircular notch (11) and the guide plate (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210173601.7A CN114525619B (en) | 2022-02-24 | 2022-02-24 | Jacquard double-sided circular weft knitting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210173601.7A CN114525619B (en) | 2022-02-24 | 2022-02-24 | Jacquard double-sided circular weft knitting machine |
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| Publication Number | Publication Date |
|---|---|
| CN114525619A true CN114525619A (en) | 2022-05-24 |
| CN114525619B CN114525619B (en) | 2023-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210173601.7A Active CN114525619B (en) | 2022-02-24 | 2022-02-24 | Jacquard double-sided circular weft knitting machine |
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| Country | Link |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1344621A (en) * | 1962-12-06 | 1963-11-29 | Morat Gmbh Franz | Method and device for dusting circular knitting machines |
| CH584302A5 (en) * | 1974-12-10 | 1977-01-31 | Mueller Jakob Forschungs Und F | Pneumatic cleaning device for tape-weaving machine - formed by blower pipe located below shed and a suction hood disposed above shed over pipe |
| US4947511A (en) * | 1987-03-13 | 1990-08-14 | Sipra Patententwicklungs-Und Beteiligungsgesellschaft Mbh | Device for pneumatic dust removal of yarn supply carriers of textile machines |
| DE4401834C1 (en) * | 1994-01-22 | 1995-06-14 | Memminger Iro Gmbh | Air recirculation system for a bobbin creel |
| KR20090006669U (en) * | 2007-12-28 | 2009-07-02 | 쌍용기계공업주식회사 | The yarn guide to prevent from dust |
| CN207904481U (en) * | 2018-02-10 | 2018-09-25 | 广东雄兴内衣实业有限公司 | A kind of yarn cleaning device of underpants fabric loom |
| CN110409052A (en) * | 2019-07-09 | 2019-11-05 | 湖北嘉麟杰纺织品有限公司 | A kind of knitting circular knitting machine annular cleaning dedusting mechanism |
| CN110453352A (en) * | 2019-08-14 | 2019-11-15 | 苏州闻松坊纺织科技有限公司 | A kind of textile machinery dust-extraction unit |
| WO2020004006A1 (en) * | 2018-06-26 | 2020-01-02 | セーレン株式会社 | Circular knitted fabric |
| CN209906989U (en) * | 2019-03-19 | 2020-01-07 | 绍兴华满鑫纺织有限公司 | Dust collector of big jacquard |
| CN215366171U (en) * | 2021-03-01 | 2021-12-31 | 山东鼎晟复合材料科技股份有限公司 | Yarn blowing mechanism for producing carbon fiber prepreg cloth |
-
2022
- 2022-02-24 CN CN202210173601.7A patent/CN114525619B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1344621A (en) * | 1962-12-06 | 1963-11-29 | Morat Gmbh Franz | Method and device for dusting circular knitting machines |
| CH584302A5 (en) * | 1974-12-10 | 1977-01-31 | Mueller Jakob Forschungs Und F | Pneumatic cleaning device for tape-weaving machine - formed by blower pipe located below shed and a suction hood disposed above shed over pipe |
| US4947511A (en) * | 1987-03-13 | 1990-08-14 | Sipra Patententwicklungs-Und Beteiligungsgesellschaft Mbh | Device for pneumatic dust removal of yarn supply carriers of textile machines |
| DE4401834C1 (en) * | 1994-01-22 | 1995-06-14 | Memminger Iro Gmbh | Air recirculation system for a bobbin creel |
| KR20090006669U (en) * | 2007-12-28 | 2009-07-02 | 쌍용기계공업주식회사 | The yarn guide to prevent from dust |
| CN207904481U (en) * | 2018-02-10 | 2018-09-25 | 广东雄兴内衣实业有限公司 | A kind of yarn cleaning device of underpants fabric loom |
| WO2020004006A1 (en) * | 2018-06-26 | 2020-01-02 | セーレン株式会社 | Circular knitted fabric |
| CN209906989U (en) * | 2019-03-19 | 2020-01-07 | 绍兴华满鑫纺织有限公司 | Dust collector of big jacquard |
| CN110409052A (en) * | 2019-07-09 | 2019-11-05 | 湖北嘉麟杰纺织品有限公司 | A kind of knitting circular knitting machine annular cleaning dedusting mechanism |
| CN110453352A (en) * | 2019-08-14 | 2019-11-15 | 苏州闻松坊纺织科技有限公司 | A kind of textile machinery dust-extraction unit |
| CN215366171U (en) * | 2021-03-01 | 2021-12-31 | 山东鼎晟复合材料科技股份有限公司 | Yarn blowing mechanism for producing carbon fiber prepreg cloth |
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| Publication number | Publication date |
|---|---|
| CN114525619B (en) | 2023-08-11 |
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