CN114525619B - Jacquard double-sided circular weft knitting machine - Google Patents
Jacquard double-sided circular weft knitting machine Download PDFInfo
- Publication number
- CN114525619B CN114525619B CN202210173601.7A CN202210173601A CN114525619B CN 114525619 B CN114525619 B CN 114525619B CN 202210173601 A CN202210173601 A CN 202210173601A CN 114525619 B CN114525619 B CN 114525619B
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- CN
- China
- Prior art keywords
- yarn
- guide
- jacquard
- hole
- weft knitting
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Classifications
-
- 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
-
- 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 application discloses a jacquard double-sided circular weft knitting machine, which belongs to the field of weft knitting machines and comprises a jacquard yarn storage device, a yarn guiding and dedusting assembly, a yarn feeding assembly, a jacquard assembly and a yarn feeding assembly, wherein the jacquard yarn storage device is used for guiding yarns to the jacquard double-sided circular weft knitting machine; the yarn guide dust removal assembly comprises a fixed ring and a plurality of guides; the yarn adopts the mode of giving vent to anger to make fibre and yarn separation when the director, then clears up the fibre through the mode of breathing in to make when guaranteeing yarn tensioning and smooth yarn that advances, effectually avoid fibre to adsorb, thereby improve jacquard quality.
Description
Technical Field
The application relates to the field of weft knitting machines, in particular to a jacquard double-sided circular weft knitting machine.
Background
Jacquard is the concave-convex pattern formed by staggering warp threads and weft threads of the textile fabric. The textile types are numerous, and jacquard fabric is one of the large types. The jacquard fabric can be divided into home textile fabric and fashion fabric, and the jacquard weaving mode of Chinese silk is known as the world as early as the ancient silk road. The embroidery is only one kind of decoration, the common embroidery is all plain weave encrypted cloth, the jacquard is higher, the requirement on cotton yarn can be raised by pattern, the quality cotton yarn can not be raised by formed pattern, and the jacquard is also plain weave jacquard and twill jacquard. According to the standard of the jacquard double-sided circular weft knitting machine, the yarn guide needs to be smooth and does not hang fibers.
The yarn guide mainly turns the yarn and ensures the yarn tension, and simultaneously ensures the smoothness of the yarn feeding. However, the existing yarn guide generally ensures smoothness by arranging a smooth guide surface, but the yarn guide is easy to be electrostatically charged to adsorb fibers due to friction between fibers and the yarn guide, equipment and other reasons, so that the yarn is easy to be unsmooth in yarn discharging caused by stacking of the fibers, and the jacquard quality is easy to be influenced by entering the fibers along with the yarns.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problem to be solved by the application is to provide a jacquard double-sided circular weft knitting machine, which can effectively avoid fiber adsorption while guaranteeing yarn tensioning and smooth yarn feeding, thereby improving jacquard quality.
To achieve the purpose, the application adopts the following technical scheme:
the application provides a jacquard double-sided circular weft knitting machine, which comprises a yarn feeding assembly and a jacquard assembly for spinning, a jacquard yarn storage device and a yarn guiding and dedusting assembly for supplying yarn, wherein the yarn is conveyed 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 dedusting assembly; the yarn guide dust removal assembly comprises a fixed ring and a plurality of guides; the guide device comprises a plurality of guide devices, a fixing ring, a wire passing hole, a plurality of air blowing holes, a guide hole and an air suction hole, wherein the guide devices are all in rotary connection with the fixing ring, the wire passing holes are formed in the middle of each guide device, the air blowing holes are formed in the upper side and the lower side of the fixing ring, the air blowing holes are located at the two ends of the wire passing holes, the side wall of the middle of each guide device is provided with the guide hole, the air suction hole is formed in the middle of the fixing ring, and the two ends of the guide hole are communicated with the wire passing holes and the air suction hole.
The application has the preferable technical scheme that a plurality of mounting grooves are formed in the outer side wall of the fixed ring at equal intervals, 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 guide, and the rotating shafts are rotatably connected in the clamping grooves.
The guide device is characterized in that the outer side wall of the guide device is an arc surface, the installation groove is correspondingly provided with an arc surface matched with the installation groove, a ventilation gap is arranged between the outer side wall of the guide device and the inner wall of the installation groove, when the guide device is in the vertical direction, the ventilation gap width is the same everywhere, and when the guide device is inclined, the ventilation gap width gradually increases from one end to the other end.
The preferable technical scheme of the application is that the two ends of the guide are provided with the guide plates, and the guide plates are positioned at one side far away from the air blowing holes, so that air sprayed out of the air blowing holes enters the wire passing holes under the blocking action of the guide plates.
The preferable technical scheme of the application is that the blowing direction of the blowing hole is along the horizontal direction, and when the guide 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 preferable technical scheme of the application is that the rotating shaft is positioned in the middle of the guide device so as to enable the rotation angles of the guide device towards the two ends to be consistent; and the centers of the air suction hole and the through hole are also positioned at the axial line position of the rotating shaft, so that the superposition ratio of the air suction hole and the diversion hole is kept highest when the guider rotates.
The preferable technical scheme of the application is that the aperture of the air suction hole is larger than the aperture of the air blowing hole.
The preferable technical scheme of the application is that semicircular notches are arranged at the upper end and the lower end of the mounting groove, the air blowing hole is positioned in the middle of the semicircular notch, the guide plate is in a circular arc shape with an angle larger than 180 degrees, the edges of the 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 preferable technical scheme of the application is that the ventilation gap is communicated with the gap between the inner part of the semicircular notch and the guide plate.
The beneficial effects of the application are as follows:
the application provides a jacquard double-sided circular weft knitting machine, wherein yarns are delivered to a yarn feeding assembly and a jacquard assembly after coming out of a jacquard yarn storage device and passing through a yarn guiding and dedusting assembly; the yarn guide dust removal assembly comprises a fixed ring and a plurality of guides; the yarn adopts the mode of giving vent to anger to make fibre and yarn separation when the director, then clears up the fibre through the mode of breathing in to make when guaranteeing yarn tensioning and smooth yarn that advances, effectually avoid fibre to adsorb, thereby improve jacquard quality.
Drawings
FIG. 1 is a schematic view of a jacquard double-sided circular weft knitting machine according to an embodiment of the present application;
FIG. 2 is a schematic view of a yarn guide dust removal assembly provided in an embodiment of the present application;
FIG. 3 is a detailed schematic of the guide provided in the embodiments of the present application;
in the figure:
1. a fixing ring; 2. a guide; 3. jacquard yarn storage device; 4. a yarn feeding assembly; 5. a jacquard assembly; 10. a yarn guiding and dust removing assembly; 11. a semicircular notch; 12. a blow hole; 13. a mounting groove; 14. an air suction hole; 15. a clamping groove; 21. a wire through hole; 22. a deflector aperture; 23. a rotating shaft; 24. and a deflector.
Detailed Description
The technical scheme of the application is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1-3, the present embodiment provides a jacquard double-sided circular weft knitting machine, which comprises a yarn feeding assembly 4 and a jacquard assembly 5 for spinning, a jacquard yarn storage device 3 and a yarn guiding and dedusting assembly 10 for supplying yarn, wherein the yarn is delivered to the yarn feeding assembly 4 and the jacquard assembly 5 after coming out of the jacquard yarn storage device 3 and passing through the yarn guiding and dedusting assembly 10; the yarn guide dust removal assembly 10 comprises a fixed ring 1 and a plurality of guides 2; a plurality of director 2 all with solid fixed ring 1 rotates to be connected, every director 2 middle part all is provided with wire hole 21, gu fixed ring 1 upper and lower both sides all are provided with a plurality of gas hole 12, gas hole 12 are located wire hole 21's both ends, director 2 middle part lateral wall is provided with water conservancy diversion hole 22, gu fixed ring 1 middle part is provided with suction port 14, water conservancy diversion hole 22's both ends intercommunication wire hole 21 with suction port 14. The yarn passes through the smooth thread passing hole 21 in the guide 2, and enters the air blowing hole 12 before entering the thread passing hole 21 and when exiting, and the fiber attached to the surface of the yarn can be separated under the action of air injection. The fibers are then sucked through the suction holes 14. The suction holes 14 may be provided with suction pumps, fiber filters, etc. as required, and will not be described here. Thereby guaranteeing the tension of the yarn and smoothly feeding the yarn, and simultaneously effectively avoiding the adsorption of the fiber, thereby improving the jacquard quality.
Preferably, a plurality of mounting grooves 13 are equidistantly formed in the outer side wall of the fixing ring 1, clamping grooves 15 are formed in two sides of each mounting groove 13, rotating shafts 23 matched with the clamping grooves 15 are arranged on two sides of the guide 2, 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 outlet at each angle can be better adapted, and the smoothness of the outlet is ensured.
In order to ensure that the separated fibers can be effectively collected, the outer side wall of the guide 2 is an arc surface, the installation groove 13 is correspondingly provided with an arc surface matched with the arc surface, a ventilation gap is arranged between the outer side wall of the guide 2 and the inner wall of the installation groove 13, when the guide 2 is in the vertical direction, the ventilation gap width is the same everywhere, and when the guide 2 is inclined, the ventilation gap width gradually increases from one end to the other end. The guide 2 has an outer surface designed in an arc shape, so that the ventilation gap can be circumferentially wrapped around the periphery of the wire passing hole 21, and thus the separated fibers can be sucked into the suction hole 14 in all directions.
Further, the two ends of the guide 2 are provided with guide plates 24, and the guide plates 24 are located at one side far away from the air blowing holes 12, so that the air ejected from the air blowing holes 12 enters the wire passing holes 21 under the blocking action of the guide plates 24. The baffle 24 serves to concentrate the air flow and simultaneously allows the air flow to surround the yarn in multiple directions, so that the fibers on the yarn are more easily separated. Meanwhile, when the guide 2 is inclined, the guide plate 24 can guide gas into the thread passing hole 21 so as to be fully contacted with the yarn, meanwhile, the yarn can be contacted with the end part of the guide 2 when entering the thread passing hole 21, and the acting force can also enable the impurity fibers to be separated from the yarn better.
Further, the blowing direction of the blowing hole 12 is along the horizontal direction, and when the guide 2 is inclined, the baffle 24 at the end far from the blowing hole 12 can still block the air blown out horizontally by the blowing hole 12. The baffles 24 at both ends allow air to blow into the wire holes 21, thereby preventing fibers from flying into the air. Meanwhile, the fiber can be better discharged from the air suction hole 14 due to the positive and negative air pressure difference by matching with the action of the air suction hole 14 in the middle part. When the guide 2 is inclined, the ventilation gap at one end is reduced, but at this time the section is largely moved into the wire hole 21 by the deflector 24, and the air spill is reduced, so that the reduction of the ventilation gap does not cause insufficient suction fibers to fly into the air. The ventilation gap at the other end is increased, the end guide plate 24 is inclined, gas entering the wire passing hole 21 is reduced, meanwhile, under the action of strong gas flow at the other end, the gas balance point can be moved downwards, fibers can overflow the wire passing hole 21, the enlarged ventilation gap just can make up for the defect, and the overflowed fibers can be sucked into the air suction hole 14 through the ventilation gap in time, so that the fibers are effectively removed.
Preferably, the rotating shaft 23 is located at the middle of the guide 2, so that the rotation angles of the guide 2 towards both ends are consistent; and the centers of the air suction hole 14 and the through hole are also positioned at the axial line position of the rotating shaft 23, so that the contact ratio of the air suction hole 14 and the flow guiding hole 22 is kept highest when the guider 2 rotates. When the guide 2 rotates, the suction hole 14 can provide larger suction force at any time to lead out air in the wire passing hole 21, and the suction force is not reduced due to rotation.
Further, the aperture of the air suction hole 14 is larger than the aperture of the air blowing hole 12. A greater suction force can be provided and the air hole 12 need only provide a small but high impact gas to the yarn.
In order to control the fiber to be stably sucked in by the suction hole 14, semicircular notches 11 are formed at the upper end and the lower end of the mounting groove 13, the air blowing hole 12 is positioned in the middle of the semicircular notch 11, the guide plates 24 are arc-shaped with angles larger than 180 degrees, the edges of the two sides of the guide plates 24 extend into the semicircular notch 11, and the radius of the guide plates 24 is smaller than that of the semicircular notch 11. Part of the gas blown out by the gas blowing holes 12 enters the through-line holes 21 under the action of the guide plates 24, and the other part of the gas is diffused to the periphery along the cambered surface of the guide plates 24, and the radian of the guide plates 24 is larger than 180 degrees, the edges of the guide plates 24 are positioned in the semicircular gaps 11, and the gas after flow guiding enters the semicircular gaps 11, and is in clearance due to the radius difference, so that the gas can be communicated with the ventilation clearance, and can smoothly enter the air suction holes 14 through the ventilation clearance. The ventilation gap is communicated with a gap between the inside of the semicircular notch 11 and the guide plate 24.
While the application 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 application. The application is not to be limited by the specific embodiments disclosed herein, but rather, embodiments falling within the scope of the appended claims are intended to be embraced by the application.
Claims (7)
1. A jacquard double-sided circular weft knitting machine, which 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 dedusting component (10) for supplying yarn, wherein the yarn is conveyed 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 dedusting component (10);
the yarn guide dust removal assembly (10) comprises a fixed ring (1) and a plurality of guides (2); a plurality of guide devices (2) are rotationally connected with the fixed ring (1), wire passing holes (21) are formed in the middle of each guide device (2), a plurality of air blowing holes (12) are formed in the upper side and the lower side of the fixed ring (1), the air blowing holes (12) are located at two ends of the wire passing holes (21), guide holes (22) are formed in the side wall of the middle of each guide device (2), air suction holes (14) are formed in the middle of the fixed ring (1), and two ends of each guide hole (22) are communicated with the wire passing holes (21) and the air suction holes (14);
a plurality of mounting grooves (13) are formed in the outer side wall of the fixed ring (1) at equal intervals, clamping grooves (15) are formed in two sides of each mounting groove (13), rotating shafts (23) matched with the clamping grooves (15) are arranged in two sides of the guide device (2), and the rotating shafts (23) are rotatably connected in the clamping grooves (15);
the guide device is characterized in that the outer side wall of the guide device (2) is an arc surface, the installation groove (13) is correspondingly provided with an arc surface matched with the installation groove, a ventilation gap is arranged between the outer side wall of the guide device (2) and the inner wall of the installation groove (13), when the guide device (2) is in the vertical direction, the width of the ventilation gap is the same everywhere, and when the guide device (2) is inclined, the width of the ventilation gap is gradually increased from one end to the other end.
2. A jacquard double-sided circular weft knitting machine according to claim 1, characterized in that:
the two ends of the guide device (2) are provided with guide plates (24), and the guide plates (24) are positioned at one side far away from the air blowing holes (12) so that air sprayed out of the air blowing holes (12) enters the wire passing holes (21) under the blocking action of the guide plates (24).
3. A jacquard double-sided circular weft knitting machine according to claim 2, characterized in that:
the blowing direction of the blowing hole (12) is along the horizontal direction, and when the guide (2) is inclined, the guide plate (24) which is far away from one end of the blowing hole (12) can still block the air blown out horizontally by the blowing hole (12).
4. A jacquard double-sided circular weft knitting machine according to claim 1, characterized in that:
the rotating shaft (23) is positioned in the middle of the guide device (2) so as to enable the rotation angles of the guide device (2) towards the two ends to be consistent; and the centers of the air suction hole (14) and the through hole are also positioned at the axial line position of the rotating shaft (23), so that the contact ratio of the air suction hole (14) and the diversion hole (22) is kept highest when the guider (2) rotates.
5. 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).
6. A jacquard double-sided circular weft knitting machine according to claim 2, characterized in that:
the utility model discloses a semicircular air blowing device, including installation groove (13), baffle and air hole (24), the upper and lower both ends of installation groove (13) are provided with semicircle breach (11), gas vent (12) are located semicircle breach (11) middle part, baffle (24) are the circular arc shape that the angle is greater than 180 degrees, just the both sides edge of baffle (24) all extends to in semicircle breach (11), baffle (24) radius is less than the radius of semicircle breach (11).
7. The jacquard double-sided circular weft knitting machine of claim 6, wherein:
the ventilation gap is communicated with a gap between the inside 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114525619A CN114525619A (en) | 2022-05-24 |
| CN114525619B true 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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| CN (1) | CN114525619B (en) |
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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|---|---|
| CN114525619A (en) | 2022-05-24 |
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