Vortex twisted joint block

Abstract

The application discloses a vortex twisting block, which has a twisting cavity, the twisting cavity comprises two holding cavities which are communicated with each other, the cross sections of the two holding cavities are partially overlapped, the holding cavities are provided with air inlets and curved surfaces opposite to the air inlets, the curved surfaces are used for guiding the gas entering through the air inlets to be single-direction rotating rotational flow, and the rotational directions of the rotational flow in the two holding cavities are opposite. The side walls of the holding cavities are provided with first air inlets and second air inlets, the first air inlets and the second air inlets are used for forming rotational flow with the same rotation direction. The cross section area of the first air inlets is smaller than that of the second air inlets, so as to form a drag gas flow layer with relatively high flow velocity and a push gas flow layer with relatively low flow velocity, and the drag gas flow layer is located on the side of the push gas flow layer close to the holding cavities. Compared with the prior art, the vortex twisting block can reduce the friction between the yarn and the twisting cavity, so that the twist of the yarn twisting position is improved, and then the tensile breaking strength of the yarn twisting position and the overall beauty of the yarn are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textiles, in particular to a vortex twisting block. BACKGROUND

[0002] The textile industry is a traditional pillar industry and an important civilian industry of China's economy, and is also an industry with obvious international competitive advantage. With the rapid development of science and technology, the weaving speed is significantly improved, so the performance requirements of the yarn are further improved, and the joint quality is one of the important factors affecting the performance of the yarn.

[0003] The air twisting device (also known as a pneumatic twisting device) is a device for realizing the knotless connection of yarns by using compressed air as power, which comprises a twisting block, and the twisting block has a twisting cavity, and the inner wall of the twisting cavity is provided with an air inlet hole. When in use, the yarn heads of two yarns are placed in the twisting cavity, high-pressure airflow enters the twisting cavity through the air inlet hole, and a rotating airflow is formed in the twisting cavity to drive the yarn heads of the two yarns to first remove the twist and then add the twist.

[0004] In the prior art, the yarn in the twisting cavity and the twisting cavity have large friction, the airflow rotating around the yarn is not easy to pass through the gap between the yarn and the twisting cavity, the rotating speed of the airflow rotating around the yarn is reduced, the twist of the yarn when twisting is low, and thus the tensile breaking strength of the yarn twisting position is reduced. SUMMARY

[0005] The purpose of the present application is to provide a vortex twisting block, which reduces the friction between the yarn and the twisting cavity, thereby improving the twist of the yarn twisting position, and further improving the tensile breaking strength of the yarn twisting position and the overall appearance of the yarn.

[0006] To achieve the above-mentioned purpose, the present application provides the following solutions:

[0007] The present application discloses a vortex twisting block, which has a twisting cavity, the twisting cavity comprises two holding cavities in communication with each other, the cross sections of the two holding cavities partially overlap, the holding cavities are provided with an air inlet hole and a curved surface opposite to the air inlet hole, the curved surface is used for guiding the airflow entering through the air inlet hole to form a single-direction rotating rotational flow, and the rotational directions of the rotational flows in the two holding cavities are opposite.

[0008] The side wall of the holding cavity is provided with a first air inlet hole and a second air inlet hole, the first air inlet hole and the second air inlet hole are used for forming the rotational flow with the same rotational direction; the cross-sectional area of the first air inlet hole is smaller than that of the second air inlet hole, so as to form a relatively high-speed trailing airflow layer and a relatively low-speed pushing airflow layer, and the trailing airflow layer is located on the side of the pushing airflow layer close to the holding cavity.

[0009] Preferably, the curved surface comprises a first curved surface and a second curved surface, the first curved surface is opposite to the outlet of the first air inlet hole, the second curved surface is opposite to the outlet of the second air inlet hole, the bottom of the first curved surface and the bottom of the second curved surface are connected by a plane, the outlet of the first air inlet hole is arranged on the plane, and the top of the first curved surface and the top of the second curved surface are arranged with an opening therebetween.

[0010] Preferably, a V-shaped groove and a vertical groove for the yarn to pass through are arranged above the holding cavity, the bottom of the V-shaped groove is connected to the top of the vertical groove, and the bottom of the vertical groove is connected to the opening and deviates to one side of the holding cavity.

[0011] Preferably, the vortex twisting block comprises a core and a shell, the holding cavity is located in the core, the shell is sleeved outside the core, the shell and the core surround a gas cavity, and the gas cavity is connected to a plurality of air inlet holes.

[0012] Preferably, the first air inlet hole and the second air inlet hole are straight holes.

[0013] Preferably, the first air inlet hole and the second air inlet hole are arranged in parallel and opposite to each other.

[0014] Preferably, a square groove is arranged at the top of the shell, a cylindrical groove is arranged at the bottom of the shell, the axis of the cylindrical groove passes through the center plane of the square groove and is perpendicular to the groove bottom of the square groove, the cylindrical groove extends to the two side groove walls of the square groove, and the core is embedded in the square groove.

[0015] The inlet of the second air inlet hole of one of the holding cavities is opposite to the cylindrical groove on one side groove wall of the square groove, and the inlet of the second air inlet hole of the other holding cavity is opposite to the cylindrical groove on the other side groove wall of the square groove.

[0016] The inlet of the first air inlet hole is located on the bottom surface of the core and is opposite to the cylindrical groove at the bottom of the shell.

[0017] Preferably, the vortex twisting block further comprises a gas supply pipeline fixedly connected to the shell, and the gas supply pipeline is connected to the gas cavity.

[0018] The present application has the following technical effects relative to the prior art:

[0019] The side wall of the holding cavity is provided with a first air inlet hole and a second air inlet hole, and the first air inlet hole and the second air inlet hole of the same holding cavity are used to form vortexes with the same rotation direction. Since the cross-sectional area of the first air inlet hole is smaller than that of the second air inlet hole, the thickness of the vortex generated by the first air inlet hole is smaller than that of the vortex generated by the second air inlet hole, thereby accelerating the flow rate of the airflow near the inner wall of the holding cavity, and the airflow is divided into a drag airflow layer with a relatively high flow rate and a push airflow layer with a relatively low flow rate, and the drag airflow layer is located on the side of the push airflow layer close to the holding cavity. The drag airflow layer can increase the gap between the yarn and the holding cavity, increase the rotational speed of the airflow rotating around the yarn, thereby increasing the twist of the yarn twist joint position, and further increasing the tensile strength of the yarn twist joint position. In addition, since the twist of the yarn twist joint position is increased, the yarn twist joint position is finer, thereby improving the overall appearance of the yarn. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 A schematic diagram of the vortex twist joint block of the embodiment of the present application;

[0022] Figure 2 A front view schematic diagram of the vortex twist joint block of the embodiment of the present application;

[0023] Figure 3 A rear view schematic diagram of the vortex twist joint block of the embodiment of the present application;

[0024] Figure 4 A schematic diagram of the core;

[0025] Figure 5 A front view schematic diagram of the core;

[0026] Figure 6 A right view schematic diagram of the core;

[0027] Figure 7 A schematic diagram of the shell;

[0028] Figure 8 An airflow simulation diagram of the vortex twist joint block of the embodiment of the present application near the twist joint cavity.

[0029] Explanation of reference signs: 1-first holding cavity; 2-second holding cavity; 3-first air inlet hole; 4-second air inlet hole; 5-first curved surface; 6-second curved surface; 7-flat surface; 8-V-shaped groove; 9-vertical groove; 10-square groove; 11-cylindrical groove; 12-first part; 13-second part; 14-core; 15-shell; 16-air supply pipeline; 17-yarn. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] The purpose of the present application is to provide a vortex twisting block that reduces the friction between the yarn and the twisting cavity, thereby increasing the twist at the yarn twisting position, and further improving the tensile strength at the yarn twisting position and the overall appearance of the yarn.

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments. In the embodiments, untwisting and twisting of two yarns are taken as examples for description, and the number of yarns in actual use can also be more than three.

[0033] Reference Figures 1-8 The present embodiment provides a vortex twisting block having a twisting cavity, the twisting cavity comprising two holding cavities in communication with each other, the two holding cavities being a first holding cavity 1 and a second holding cavity 2 respectively, and the cross sections of the two holding cavities partially overlap. The holding cavities have air inlet holes and curved surfaces opposite to the air inlet holes, the curved surfaces being used to guide the gas flowing through the air inlet holes into rotational flow rotating in one direction, and the rotational directions of the rotational flow in the two holding cavities being opposite.

[0034] The side wall of the holding cavity is provided with a first air inlet hole 3 and a second air inlet hole 4, and the first air inlet hole 3 and the second air inlet hole 4 of the same holding cavity are used to form rotational flow rotating in the same direction. The cross-sectional area of the first air inlet hole 3 is smaller than that of the second air inlet hole 4, so as to form a relatively high drag gas flow layer and a relatively low push gas flow layer, and the drag gas flow layer is located on the side of the push gas flow layer close to the holding cavity.

[0035] The working principle of the vortex twisting block of the present embodiment is as follows:

[0036] The two yarns 17 pass through the first holding cavity 1 and the second holding cavity 2, and due to the partially overlapping cross sections of the two holding cavities, the two yarns 17 are brought close to each other. When the air inlet holes introduce air flow into the holding cavities, the two yarns 17 are untwisted and then twisted again. Due to the smaller cross-sectional area of the first air inlet hole 3 than that of the second air inlet hole 4, the thickness of the rotational flow generated by the first air inlet hole 3 is smaller than that of the rotational flow generated by the second air inlet hole 4, thereby increasing the flow rate of the air flow near the inner wall of the holding cavity and causing the air flow to be divided into a drag air flow layer and a push air flow layer. The drag air flow layer can increase the gap between the yarn 17 and the holding cavity, reduce the friction between the yarn 17 and the holding cavity, and increase the rotational speed of the air flow around the yarn 17, thereby increasing the twist of the splicing position of the yarn 17 and further increasing the tensile strength at break of the splicing position of the yarn 17. In addition, due to the increased twist of the splicing position of the yarn 17, the splicing position of the yarn 17 is finer, thereby improving the overall appearance of the yarn 17.

[0037] As a possible example, in the present embodiment, the curved surface includes a first curved surface 5 and a second curved surface 6, the first curved surface 5 is opposite to the outlet of the first air inlet hole 3, the second curved surface 6 is opposite to the outlet of the second air inlet hole 4, the bottom of the first curved surface 5 is connected to the bottom of the second curved surface 6 through a plane 7, the outlet of the first air inlet hole 3 is arranged on the plane 7, and an opening is arranged between the top of the first curved surface 5 and the top of the second curved surface 6. Specifically, in the present embodiment, the first curved surface 5 is preferably a cylindrical surface. According to different actual needs, those skilled in the art can also select other shapes of holding cavities, for example, replacing the plane 7 between the first curved surface 5 and the second curved surface 6 with a transition curved surface.

[0038] As a possible example, in the present embodiment, a V-shaped groove 8 and a vertical groove 9 for the yarn 17 to pass through are arranged above the holding cavity, 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 is offset to one side of the holding cavity. The opening of the V-shaped groove 8 gradually decreases from top to bottom, thereby guiding the yarn 17 and making the yarn 17 more easily enter the holding cavity.

[0039] As a possible example, in the present embodiment, the vortex twisting block includes a core 14 and a shell 15, the holding cavity is located in the core 14, the shell 15 is arranged outside the core 14, the shell 15 and the core 14 enclose a gas cavity, and the gas cavity is connected to the plurality of air inlet holes. Through this gas supply mode, the present embodiment can ensure the consistency of the air pressure in the first air inlet hole 3 and the second air inlet hole 4, reduce the use of pipelines and joints, simplify the structure, and reduce the cost.

[0040] As a possible example, in the embodiment, the first air inlet hole 3 and the second air inlet hole 4 are straight holes, which can be formed by drilling, thereby reducing the processing cost. When the first air inlet hole 3 and the second air inlet hole 4 are curved holes, the core 14 can be formed by casting, injection molding or other processing methods. The straight hole here is preferably a circular hole, and those skilled in the art can also select other straight holes with different cross-sectional shapes according to actual needs.

[0041] As a possible example, in the embodiment, the first air inlet hole 3 and the second air inlet hole 4 are arranged in parallel and opposite to each other. That is, compared with the position relationship of facing each other, the first air inlet hole 3 and the second air inlet hole 4 are staggered with each other. According to different actual needs, those skilled in the art can also select to form an included angle between the first air inlet hole 3 and the second air inlet hole 4, for example, an included angle of 5° or 10°.

[0042] As a possible example, in the embodiment, the top of the cover 15 is provided with a square slot 10, the bottom of the cover 15 is provided with a cylindrical slot 11, and the bottom of the core 14 is embedded in the square slot 10. The axis of the cylindrical slot 11 passes through the center plane of the square slot 10 and is perpendicular to the slot bottom of the square slot 10, and the cylindrical slot 11 extends to the two side slot walls of the square slot 10. The corresponding cylindrical slots 11 on the two side slot walls of the square slot 10 are the first part 12 and the second part 13, respectively. The inlet of the second air inlet hole 4 of the first holding cavity 1 is opposite to the first part 12, and the inlet of the second air inlet hole 4 of the second holding cavity 2 is opposite to the second part 13. The inlet of the first air inlet hole 3 is located on the bottom surface of the core 14 and is opposite to the cylindrical slot 11 at the bottom of the cover 15. According to different actual needs, those skilled in the art can also select other shapes of the cover 15 and the core 14.

[0043] As a possible example, in the embodiment, the vortex twisting joint further comprises a gas supply pipeline 16 fixedly connected with the cover 15, a first end of the gas supply pipeline 16 is in communication with the gas supply cavity, and a second end of the gas supply pipeline 16 is used to connect a high-pressure gas source to supply gas to the gas supply cavity.

[0044] The principles and implementation manners of the present application are described in the specification by using specific examples, and the above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the present application. In conclusion, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A vortex twisting block, having a twisting cavity, the twisting cavity comprising two holding cavities in communication with each other, cross sections of the two holding cavities partially overlap, the holding cavities have an air inlet hole and a curved surface opposite to the air inlet hole, the curved surface is used to guide the gas from the air inlet hole into a single direction rotating spiral flow, the spiral flows in the two holding cavities rotate in opposite directions, characterized in that: the side wall of the holding cavities is provided with a first air inlet hole and a second air inlet hole, the first air inlet hole and the second air inlet hole are used to form the spiral flows with the same rotation direction; the cross-sectional area of the first air inlet hole is smaller than that of the second air inlet hole, so as to form a relatively high drag gas flow layer and a relatively low push gas flow layer, the drag gas flow layer is located on the side of the push gas flow layer close to the holding cavities; the first air inlet hole and the second air inlet hole are arranged in parallel and opposite to each other. The curved surface comprises a first curved surface and a second curved surface, the first curved surface is opposite to the outlet of the first air inlet hole, the second curved surface is opposite to the outlet of the second air inlet hole, the bottom of the first curved surface and the bottom of the second curved surface are connected by a plane, the outlet of the first air inlet hole is arranged on the plane, and an opening is arranged between the top of the first curved surface and the top of the second curved surface. A V-shaped groove and a vertical groove for the yarn to pass through are arranged above the holding cavities, the bottom of the V-shaped groove is connected to the top of the vertical groove, and the bottom of the vertical groove is connected to the opening and deviates to one side of the holding cavities.

2. A twisted block according to claim 1, wherein The holding cavities are located in a core, and a shell is arranged outside the core, the shell and the core form a gas cavity that communicates with a plurality of air inlet holes.

3. A twisted block according to claim 2, wherein The first air inlet hole and the second air inlet hole are straight holes.

4. The vortex twisting block of claim 2, wherein, A square groove is arranged at the top of the shell, a cylindrical groove is arranged at the bottom of the shell, the axis of the cylindrical groove passes through the center plane of the square groove and is perpendicular to the groove bottom of the square groove, and the cylindrical groove extends to both side groove walls of the square groove; the core is embedded in the square groove.

5. A twisted block as claimed in claim 4, characterised in that The inlet of the second air inlet hole of one of the holding cavities is opposite to the cylindrical groove on one side groove wall of the square groove, and the inlet of the second air inlet hole of the other holding cavity is opposite to the cylindrical groove on the other side groove wall of the square groove.

6. A twisted mass as claimed in claim 5, wherein The inlet of the first air inlet hole is located on the bottom surface of the core and opposite to the cylindrical groove at the bottom of the shell. A gas supply pipeline fixedly connected with the shell is further arranged, and the gas supply pipeline communicates with the gas cavity. ​ 7. The vortex twisting block of claim 4, wherein, ​

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