EP4566976A1 - Buse d'épissage par vortex - Google Patents
Buse d'épissage par vortex Download PDFInfo
- Publication number
- EP4566976A1 EP4566976A1 EP24166396.2A EP24166396A EP4566976A1 EP 4566976 A1 EP4566976 A1 EP 4566976A1 EP 24166396 A EP24166396 A EP 24166396A EP 4566976 A1 EP4566976 A1 EP 4566976A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas inlet
- inlet hole
- gripping
- groove
- vortex
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
- B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
- B65H69/061—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing using pneumatic means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Definitions
- the present disclosure relates to the technical field of textile technology, in particular to a vortex splicing nozzle.
- Textile industry is a traditional pillar industry and an important employment industry in economy in China, and is also an industry with obvious international competitive advantages. With the rapid development of science and technology, the spinning speed is significantly improved, so the requirements for yarn properties are further improved, and the quality of joints is one of the important factors affecting yarn properties.
- Compressed air type splicer (also known as pneumatic splicer) is a device that uses compressed air as power to achieve jointless connection of yarns.
- the compressed air type splicer includes a splicing nozzle, which has a splicing chamber, and an inner wall of the splicing chamber is provided with gas inlet holes.
- high-pressure airflow enters the splicing chamber through the gas inlet holes to form rotational airflow in the splicing chamber, thus driving the yarn ends of the two yarns to be spliced.
- An objective of the present disclosure is to provide a vortex splicing nozzle to reduce the friction between yarns and a splicing chamber, thus increasing the twist of a portion at a position where yarns are spliced, and further improving the tensile fracture strength of the portion at the position where yarns are spliced and the overall aesthetics of the yarns.
- a side wall of the gripping chamber is provided with a first gas inlet hole and a second gas inlet hole, and the first gas inlet hole and the second gas inlet hole are configured for forming the rotational flows with a same rotating direction; cross sectional area of the first gas inlet hole is less than that of the second gas inlet hole, so as to form a dragging airflow layer with a higher flow velocity and a pushing airflow layer with a lower flow velocity, and the dragging airflow layer is located at one side, close to the gripping chamber, of the pushing airflow layer.
- a V-shaped groove and a vertical groove for yarns to pass through are provided above the two gripping chambers, a bottom of the V-shaped groove is connected to a top of the vertical groove, and a bottom of the vertical groove is connected to the opening and deviated to one side of one of the two gripping chambers.
- each of the first gas inlet hole and the second gas inlet hole is a straight hole.
- a top of the housing is provided with a square groove
- a bottom of the housing is provided with a cylindrical groove
- an axis of the cylindrical groove extends through a central face of the square groove and is perpendicular to a bottom of the square groove
- the cylindrical groove extends to groove walls, on both sides, of the square groove, and the core is embedded into the square groove.
- An inlet of the second gas inlet hole of one of the two gripping chambers directly faces the cylindrical groove on one of the groove walls, at one side, of the square groove
- an inlet of the second gas inlet hole of an other of the two gripping chambers directly faces the cylindrical grooves on an other of the groove walls, at an other side, of the square groove.
- An inlet of the first gas inlet hole is located on a bottom surface of the core, and directly faces the cylindrical groove at the bottom of the housing.
- the vortex splicing nozzle further includes a gas supply pipeline fixedly connected to the housing, the gas supply pipeline is communicated with the gas supply chamber.
- the first gas inlet hole and the second gas inlet hole of the same gripping chamber are used for forming rotational flows with the same rotating direction.
- the cross-sectional area of the first gas inlet hole is less than that of the second gas inlet hole, the thickness of the rotational flow generated by the first gas inlet hole is smaller than that generated by the second gas inlet hole, thus accelerating the flow velocity of the airflow near an inner wall of the gripping chamber.
- the airflow is divided into a dragging airflow layer with relatively high flow velocity and a pushing airflow layer with relatively low flow velocity, and the dragging airflow layer is located at one side, close to the gripping chamber, of the pushing airflow layer.
- the dragging airflow layer can increase a gap between the yarn and the gripping chamber, and increase the rotating speed of the airflow rotating around the yarn, thus increasing the twist of a portion at the position where the yarns are spliced and further improving the tensile fracture strength of the portion at the position where the yarns are spliced.
- the portion at the position where the yarns are spliced is thinner, and the overall aesthetics of the yarn is improved.
- Reference numerals 1 first gripping chamber; 2 second gripping chamber; 3 first gas inlet hole; 4 second gas inlet hole; 5 first curved surface; 6 second curved surface; 7 plane; 8 V-shaped groove; 9 vertical groove; 10 square groove; 11 cylindrical groove; 12 first portion; 13 second portion; 14 core; 15 housing; 16 gas supply pipeline; 17 yarn.
- An objective of the embodiments is to provide a vortex splicing nozzle to reduce the friction between yarns and a splicing chamber, thus increasing the twist of a portion at a position where the yarns are spliced, and further improving the tensile fracture strength of the portion at the position where the yarns are spliced and the overall aesthetics of the yarns.
- the present disclosure is further described in detail below with reference to the embodiments.
- the splicing of two yarns are taken as an example for illustration.
- the number of yarns may be more than three.
- a side wall of the gripping chamber is provided with a first gas inlet hole 3 and a second gas inlet hole 4, and the first gas inlet hole 3 and the second gas inlet hole 4 of the same gripping chamber are configured for forming rotational flows with the same rotating direction.
- the cross-sectional area of the first gas inlet hole 3 is less than that of the second gas inlet hole 4, so as to form a dragging airflow layer with higher flow velocity and a pushing airflow layer with lower flow velocity, and the dragging airflow layer is located at one side, close to the gripping chamber, of the pushing airflow layer.
- the two yarns 17 both penetrate through the first gripping chamber 1 and the second gripping chamber 2, and the two yarns 17 are promoted to approach each other due to the cross sections of the two gripping chambers are partially overlapped.
- the two yarns 17 are spliced.
- a thickness of the rotational flow generated by the first gas inlet hole 3 is less than that generated by the second gas inlet hole 4, thus accelerating the flow velocity of the airflow near the inner wall of the gripping chamber, dividing the airflow into a dragging airflow layer and a pushing airflow layer.
- the dragging airflow layer can increase a gap between the yarns 17 and the gripping chamber, so that the friction between the yarns 17 and the gripping chamber is reduced, and the rotating speed of the airflow rotating around the yarns 17 is improved, thus increasing the twist of a portion at the position where the yarns are spliced, and further improving the tensile fracture strength of the portion at the position where the yarns are spliced. Furthermore, due to the increase of the twist of the portion at the position where the yarns 17 are spliced, the portion at the position where the yarns 17 are spliced is thinner, thus improving the overall aesthetics of the yarns 17.
- the curved surfaces of the gripping chamber includes a first curved surface 5, and a second curved surface 6.
- the first curved surface 5 directly faces an outlet of the first gas inlet hole 3
- the second curved surface 6 directly faces an outlet of the second gas inlet hole 4
- the bottom of the first curved surface 5 is connected to the bottom of the second curved surface 6 via a plane 7,
- the outlet of the first gas inlet hole 3 is located on the plane 7, and an opening is provided between the top of the first curved surface 5 and the top of the second curved surface 6.
- the first curved surface 5 is preferably a cylindrical surface. According to different actual needs, those of ordinary skill in the art may also choose gripping chambers in other shapes, for example, the plane 7 between the first curved surface 5 and the second curved surface 6 can be replaced with a transition curved surface.
- a V-shaped groove 8 and a vertical groove 9 for the yarns 17 to pass through is provided above the gripping chambers, the bottom of the V-shaped groove 8 is connected to the top of the vertical groove 9, and the bottom of the vertical groove 9 is connected to the opening and deviated to one side of the gripping chamber.
- the side of an opening of the V-shaped groove 8 gradually decreases from top to bottom, thus guiding the yarns 17 and making the yarns 17 enter the gripping chambers easier.
- the vortex splicing nozzle further includes a core 14, and a housing 15.
- the gripping chambers are located in the core 14, the housing 15 is sleeved outside the core 14 to form a gas supply chamber between the housing 15 and the core 14.
- the gas supply chamber is communicated with multiple gas inlet holes.
- the gas supply mode in this embodiment on the one hand, guarantees that the pressure in the first gas inlet hole 3 is consistent with that in the second gas inlet hole 4 and on the other hand, thus reducing the use of the pipeline and the joint, simplifying the structure and reducing the cost.
- the first gas inlet hole 3 and the second gas inlet hole 4 are both straight holes, which can be formed by drilling, thus reducing the processing cost.
- the core 14 may be formed by casting, injection molding and other processing modes.
- the straight hole here is preferably a round hole, those skilled in the art may choose straight holes with other cross section shapes according to different actual needs.
- the first gas inlet hole 3 and the second gas inlet hole 4 are parallel to and opposite to each other. That is, compared with the directly facing position relationship, the first gas inlet hole 3 and the second gas inlet hole 4 are deviated from each other. According to different actual needs, those skilled in the art may also choose to form an included angle between the first gas inlet hole 3 and the second gas inlet hole 4, such as an included angle of 5 degrees or 10 degrees.
- the top of the housing 15 is provided with a square groove 10
- the bottom of the housing 15 is provided with a cylindrical groove 11
- the bottom of the core 14 is embedded into the square groove 10.
- An axis of the cylindrical groove 11 extends through a central face of the square groove 10 and is perpendicular to the bottom of the square groove 10, and the cylindrical groove 11 extends to groove walls on both sides of the square groove 10.
- Portions of the cylindrical groove 11 corresponding to the groove walls on both sides of the square groove 10 are a first portion12 and a second portion 13.
- An inlet of the second gas inlet hole 4 of the first gripping chamber 1 directly faces the first portion 12, and an inlet of the second gas inlet hole 4 of the second gripping chamber 2 directly faces the second portion 13.
- An inlet of the first gas inlet hole 3 is located on a bottom surface of the core 14 and directly faces the cylindrical groove 11 at the bottom of the housing 15. According to different actual needs, those of ordinary skill in the art may also choose housings 15 and cores 14 in other shapes.
- the vortex splicing nozzle further includes a gas supply pipeline 16 fixedly communicated with the housing 15, a first end of the gas supply pipeline 16 is communicated with the gas supply chamber, and a second end of the gas supply pipeline 16 is communicated with a high-pressure gas source, so as to supply gas into the gas supply chamber.
Landscapes
- Spinning Or Twisting Of Yarns (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311666300.9A CN117533883B (zh) | 2023-08-29 | 2023-12-06 | 涡流捻接块 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4566976A1 true EP4566976A1 (fr) | 2025-06-11 |
Family
ID=90675761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24166396.2A Pending EP4566976A1 (fr) | 2023-12-06 | 2024-03-26 | Buse d'épissage par vortex |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP4566976A1 (fr) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2666741A2 (fr) * | 2012-05-25 | 2013-11-27 | Murata Machinery, Ltd. | Dispositif d'épissage de fil, système d'épissage de fil et machine textile |
| EP4071097A1 (fr) * | 2021-04-09 | 2022-10-12 | Murata Machinery, Ltd. | Buse d'épissage de fil et dispositif de bobinage |
-
2024
- 2024-03-26 EP EP24166396.2A patent/EP4566976A1/fr active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2666741A2 (fr) * | 2012-05-25 | 2013-11-27 | Murata Machinery, Ltd. | Dispositif d'épissage de fil, système d'épissage de fil et machine textile |
| EP4071097A1 (fr) * | 2021-04-09 | 2022-10-12 | Murata Machinery, Ltd. | Buse d'épissage de fil et dispositif de bobinage |
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