A new type of high-efficiency energy-saving pre-network device and pre-network nozzle core

Abstract

The application discloses a novel high-efficiency energy-saving pre-network device, a base is provided with an air pipe and an air cavity for compressed air; the base is provided with upper and lower open-type filament guides arranged side by side at upper and lower positions respectively, the open-type filament guides are in a columnar shape, and gaps for passing through the filament bundles are formed between the adjacent filament guides; the base is provided with nozzle cores arranged side by side at a middle position, the nozzle cores are designed in a long strip block shape, have front and rear side planes, the front side plane is designed with a filament groove, a retracted necked groove is formed above a groove opening of the filament groove, a channel is formed in the nozzle core and is communicated with the air cavity, a linear air jet hole is formed in the rear side plane and is communicated with the channel, and the air jet hole is opposite to the filament groove of another nozzle core. The application has the advantages of simple structure, convenient machining and assembling, simplified head raising process, shortened head raising operation time, reduced waste filament amount, low compressed air pressure, maximum reduction of the air consumption of compressed air, and greatly improved oil uniformity on the filament and formed stable, uniform and slight network points.

Description

Technical Field

[0001] This invention belongs to the technical field of chemical fiber spinning, specifically relating to a novel high-efficiency and energy-saving pre-network nozzle core, and a pre-network device suitable for polyester and nylon filaments. Background Technology

[0002] The pre-network nozzle is a key component used in the chemical fiber spinning process. Its main function is to pre-network each filament in the fiber bundle after the filament bundle has been oiled. The airflow passes through the nozzle channel and pre-networks each filament, ensuring more uniform oil adhesion between the filaments and creating initial entanglement points, thus improving the bundle's cohesion and stability. This pretreatment helps improve the uniformity of oil distribution, reduce abnormal phenomena such as filament breakage and fuzzing, and improve the spinnability of subsequent texturing processes.

[0003] During the start-up or breakage handling of a chemical fiber spinning production line, after the filament bundle is drawn from the spinneret and passes through the oil nozzle, it enters the pre-network nozzle. Under the action of airflow, the individual filaments form a uniform oil film and initial entanglement points (i.e., "network points"), completing the stable transport of the filament bundle. This process is called the pre-network nozzle lifting operation. This operation is one of the key steps in spinning start-up, directly affecting the bundle's cohesion, subsequent spinnability, and the quality of the finished yarn. The entire lifting operation typically includes the following steps: 1. Threading and guiding: The freshly ejected filament bundle is guided through the oil nozzle by the suction gun and introduced into the pre-network nozzle inlet; 2. Airflow activation: The compressed air system is activated, generating a high-speed vortex or direct airflow inside the nozzle; 3. Network formation: The airflow impact causes periodic entanglement between the individual filaments, forming a uniform oil film and slight entanglement points, enhancing the overall integrity and cohesion of the filament bundle; 4. Stable operation confirmation: The filament bundle vibration and network degree are observed to ensure smooth entry into the next process such as stretching and winding. If the yarn raising process fails, the raising process needs to be restarted, which results in longer raising time, increased waste yarn, seriously affecting the quality of the yarn and increasing consumption, which in turn affects the quality of subsequent processing such as polyester low elasticity yarn.

[0004] like Figures 1 to 9 As shown, the existing pre-networking device consists of main components such as a mounting base 10 (machined metal part), U-shaped yarn guides 11 (ceramic parts) for yarn inlet and outlet, and nozzle core 12 (ceramic parts). During the head-raising operation, compressed air is turned on and enters the air chamber 102 on the base 10. The compressed air is then redistributed to the nozzle core 12. The yarn enters through the upper U-shaped yarn guide 11, then passes through the nozzle core 12, and finally exits through the lower U-shaped yarn guide 11, completing the entire yarn operation process in the pre-networking nozzle and achieving a uniform oiling effect.

[0005] The existing nozzles have been found to have the following defects during actual use: I. See also Figure 5 The mounting base 10 is designed with two bottom compressed air inlets 101. After the compressed air enters the air chamber 102, it cannot form a stable pressure throughout the entire air chamber 102. The outlet pressure of the nozzle cores 12 near the two sides of the air inlet 101 is relatively large, and the air output is also relatively large. However, the middle nozzle core 12 is far from the air inlet, and the air output is relatively small. Therefore, uneven oiling of the yarn is caused, which has a greater impact on subsequent dyeing and processing.

[0006] II. See Figure 2 and Figure 3 When the yarn rises, it passes through the through hole 111 in the semi-enclosed U-shaped guide 11. The design size of this through hole 111 is relatively small (h). d=1.4mm If there is any loose yarn (1.0mm), it will inevitably cause the yarn to get tangled at the entrance of the through hole 111, resulting in a yarn breakage accident. In that case, the machine must be stopped and the head raised again, which will seriously affect production and efficiency.

[0007] III. See Figure 6 The nozzle core 12 has a cylindrical structure design. The nozzle core 12 (ceramic part) and the nozzle seat 13 (metal machined part) need to be manually bonded together using adhesive 125. At the same time, the straightness of the inlet 131 of the nozzle seat 13 and the inlet 121 of the nozzle core needs to be within ±0.03mm during bonding. In actual operation, deviations are easy to occur. Therefore, when the yarn enters the nozzle core bundle channel 122, the yarn guide is not smooth, and fuzzing is easy to occur.

[0008] IV. See Figures 7 to 9 The nozzle core 12 has a bundle-gathering channel 122 with a diameter φ of 2.4mm. In the middle of the channel is a flat boss 124 with a designed length L=5.8mm. When the yarn enters the nozzle channel 122 through the nozzle inlet 121, compressed air is sprayed onto the yarn through the nozzle orifice 123, causing the yarn bundle to collide with the flat boss 124 in the channel, forming a vortex to achieve a uniform oil distribution effect. Because the flat boss 124 in the nozzle channel is only 5.8mm in size, which is relatively small, to achieve ideal oil distribution and slight dot formation, the air pressure needs to be increased to achieve the desired effect, significantly increasing the air pressure cost.

[0009] V. See also Figure 2 The distance D between the two nozzle cores 12 after assembly is 6.5mm. The assembled volume is small and does not have the characteristics of being lightweight. Summary of the Invention

[0010] The purpose of this invention is to provide a novel, high-efficiency and energy-saving pre-network device and pre-network nozzle core, which simplifies the structure, facilitates processing and assembly, simplifies the head-raising process, shortens the head-raising operation time, reduces waste yarn, and uses lower compressed air pressure, minimizing the amount of compressed air used. At the same time, it greatly improves the uniformity of oiling on the yarn and forms stable and uniform slight network dots.

[0011] To achieve the above-mentioned objectives, the technical solution of the present invention is as follows: A novel, high-efficiency, and energy-saving pre-network device comprises a base, open-type wire guides, and nozzle cores. The base has a side-mounted air pipe for compressed air intake, and an air chamber connecting to the air pipe within the base. Upper and lower open-type wire guides are installed side-by-side on the base, respectively. The open-type wire guides are columnar, with gaps between adjacent guides for the passage of the wire bundle. Nozzle cores are installed side-by-side in the middle of the base. Each nozzle core has a long, block-like design with a front and rear plane. One front plane of two adjacent nozzle cores fits into the other rear plane. A long recess is designed on the front plane to form a through-groove for the wire bundle. The groove opening is recessed above, forming a constricted groove between two adjacent nozzle cores. Inside the nozzle core, a compressed air channel with an opening facing downwards and communicating with the air chamber of the base is formed. A straight jet hole is opened on the rear plane to communicate with the compressed air channel, and the height of the jet hole is aligned with the opening of the filament groove, so that the jet hole of one nozzle core is directly opposite the filament groove of the other nozzle core. The filament enters through the upper open filament guide, then enters the filament groove of the nozzle core through the constricted groove, and finally exits through the lower open filament guide. The compressed air enters the air chamber through the air pipe on the side of the base and is distributed to the channels of each nozzle core. The jet hole evenly sprays the filaments in the filament grooves of adjacent nozzle cores.

[0012] The open-type wire guide forms a lateral slope on the front and back of the gap, which reduces the contact between the gap and the wire bundle between adjacent wire guides, thus ensuring the guidance of the wire bundle while avoiding abrasion damage to the wire bundle.

[0013] The top of the open-type filament guide forms a top slope that is high in the middle and low on both sides, allowing the filament bundle to easily enter the gap between adjacent filament guides with the help of the top slope.

[0014] The nozzle core has a filament guide surface formed on the top of the long block shape, which allows the filament to easily enter the constriction groove and be guided into the filament groove.

[0015] The bottom of the filament groove of the nozzle core is a platform surface and is directly opposite the opening of the filament groove.

[0016] The channel of the nozzle core gradually widens from top to bottom.

[0017] A pre-network nozzle core is designed as a long strip block with a front side plane and a rear side plane. When arranged side by side, the front side plane of two adjacent nozzle cores fits into the rear side plane of the other. A long recess is designed on the front side plane to form a through-strip-shaped filament groove. The front side plane is recessed above the opening of the filament groove to form a constriction groove between two adjacent nozzle cores. The interior of the nozzle core forms a compressed air channel that opens downward and communicates with the air chamber of the base. A straight jet hole is opened on the rear side plane to communicate with the compressed air channel, and the height of the jet hole is aligned with the opening of the filament groove, so that the jet hole of one nozzle core is directly opposite the filament groove of the other nozzle core.

[0018] By adopting the above solution, the present invention has the following advantages compared with the prior art: First, the pre-network nozzle core structure is relatively simple, the mold is easy to process and the cost is low. Adjacent pre-network nozzle cores are attached and arranged in a row for assembly, resulting in a small volume after assembly. Moreover, the distance between the two nozzle cores after assembly is small, only 4mm, compared to the distance between the two nozzle cores after assembly of the prior art which is 6.5mm. This invention achieves the lightweighting of the nozzle.

[0019] Second, the wire guide of this invention is an open design. When raising the head, the wire bundle can be easily introduced from top to bottom. The introduction is convenient and smooth, and there will be no wire tangling or breakage. The raising operation time is only about 1.5 minutes. In contrast, the existing wire guide is a closed design, which makes raising the head more difficult and is prone to wire tangling or breakage. The raising time is about 3 minutes. Therefore, the raising operation time of this invention can be shortened by 50-60% compared with the existing technology, and the amount of waste wire is reduced by about 50%.

[0020] Third, due to the innovative nozzle core design, the filament bundle is subjected to airflow within the nozzle core, resulting in a longer vortex residence time. This leads to more uniform oil application on the filament bundle, reducing compressed air pressure and air consumption. Field tests have shown that this can save approximately 45-50% of compressed air consumption, saving electricity costs. Furthermore, the oil evenness and the generation of a light mesh effect are significantly superior to existing technologies.

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0022] Figure 1 It is a three-dimensional diagram of the existing technology; Figure 2 It is a front view of the prior art; Figure 3 This is an enlarged view of the existing U-shaped wire guide structure; Figure 4 This is a top view of existing technology; Figure 5 yes Figure 4 AA section view; Figure 6 yes Figure 5 A magnified view of a portion of the image; Figure 7 This is a 3D view of a nozzle core from existing technology; Figure 8 This is a side view of the nozzle core in the prior art; Figure 9 yes Figure 8 AA section view; Figure 10 This is an overall perspective view of the present invention; Figure 11 This is a front view of the present invention; Figure 12 This is a top view of the present invention; Figure 13 yes Figure 12 AA section view; Figure 14 yes Figure 11 Enlarged view of point I; Figure 15 yes Figure 11 Enlarged view at point II; Figure 16 This is a perspective view of the nozzle core of the present invention; Figure 17 This is a side view of the nozzle core of the present invention; Figure 18 This is a front view of the nozzle of the present invention; Figure 19 yes Figure 10 A magnified view of a portion of the image.

[0023] Label Explanation 10----Base, 101----Air inlet, 102----Air chamber, 11----U-shaped wire guide, 111----Through hole, 12----Nozzle core, 121----Inlet, 122----Channel, 123----Nozzle hole, 124----Flat boss, 125----Adhesive, 13----Nozzle seat, 131----Inlet; 20----Base, 21----Wire guide, 22----Nozzle core, 201----Air tube, 202----Air chamber, 211----Gap, 212----Top slope, 213----Side slope, 221----Front side plane, 222----Rear side plane, 223----Wire bundle groove, 224----Constriction groove, 225----Channel, 226----Air jet hole, 227----Inlet surface. Detailed Implementation

[0024] like Figures 10 to 19As shown, this invention discloses a novel, highly efficient, and energy-saving pre-networking device, mainly composed of a mounting base 20 (a machined metal part), an open-type yarn guide 21 (a ceramic part) for yarn inlet and outlet, and a nozzle core 22 (a ceramic part). During the head-raising operation, the yarn bundle enters through the upper open-type yarn guide 21, then passes through the nozzle core 22, and finally exits through the lower open-type yarn guide 21, completing the entire yarn bundle's operation process in the pre-networking nozzle.

[0025] The base 20 has an air pipe 201 on its side for compressed air to enter, and an air chamber 202 inside the base 20 that connects to the air pipe 201. During production, before the head is raised, as... Figure 13 As shown, when the compressed air is turned on, the compressed air enters through a D16 air pipe 201 on the side of the mounting base 20. After the compressed air enters the air chamber 202 of the base, a stable pressure is formed. The compressed air is evenly distributed to each nozzle core 22, avoiding abnormal physical properties of the yarn caused by uneven compressed air in the nozzle core 22.

[0026] The base 20 has upper open-type wire guides 21 and lower open-type wire guides 21 arranged side by side at the top and bottom positions, respectively. The open-type wire guides 21 are columnar, and gaps 211 are formed between adjacent wire guides 21 to allow the wire bundle to pass through. Further, as Figure 19 As shown, the top of the wire guide 21 forms a top slope 212 that is high in the middle and low on both sides, allowing the wire bundle to easily enter the gap 211 between adjacent wire guides 21 with the help of the top slope 212; the front and back of the gap 211 form side slopes 213, reducing the contact area between the gap 211 between adjacent wire guides 21 and the wire bundle, thus ensuring the guidance of the wire bundle while avoiding abrasion and damage to the wire bundle. During head raising, as... Figure 14 As shown, the filament bundle first passes through the gap 211 in the open filament guide 21. The width d1 of the gap 211 between the two open filament guides 21 is designed to be 0.2mm. The design of the open filament guide 21 can avoid interruption of normal production during the winding process due to filament drift, and greatly improve production efficiency.

[0027] The base 20 has nozzle cores 22 arranged side by side at the middle position, such as Figure 15 As shown, the filament bundle enters the nozzle core 22 after passing through the slit 211 in the open filament guide 21. This nozzle core 22 has a long strip-shaped design, such as... Figures 16 to 18 As shown, the nozzle core 22 has a front side plane 221 and a rear side plane 222. One front side plane 221 of two adjacent nozzle cores 22 fits into the other rear side plane 222. A long recess is designed on the front side plane 221 to form a through-strip-shaped filament groove 223 (cross-sectional dimension: 2.5mm). 1mm), the front side plane 221 is recessed above the groove opening of the filament groove 223, forming a constriction groove 224 between two adjacent nozzle cores 22. The interior of the nozzle core 22 forms a compressed air channel 225 that opens downward and communicates with the air chamber 202 of the base 20. At the same time, a straight jet hole 226 (side dimension 0.9mm) is machined on the rear side plane 222. (1.8mm), the jet nozzle 226 connects to the compressed air passage 225, and the height of the jet nozzle 226 is aligned with the opening of the filament groove 223. Further, as... Figure 16 As shown, the nozzle core 22 forms a filament guide surface 227 on the top of the elongated block shape, so that the filament can easily enter the constriction groove 224 (the width d2 is designed to be 0.2mm) and be guided into the filament groove 223 with the help of the filament guide surface 227; the bottom of the filament groove 223 of the nozzle core 22 is a platform surface and is directly opposite the groove opening of the filament groove 223; the channel 225 of the nozzle core 22 gradually widens from top to bottom. In actual production, multiple nozzle cores 22 are precisely assembled and used. After assembly, between two adjacent nozzle cores 22, the air jet hole 226 of the right nozzle core 22 is directly opposite the opening of the filament groove 223 of the adjacent left nozzle core 22. Compressed air reaches the air jet hole 226 through the compressed air channel 225 of the nozzle core 22. After the compressed air passes through the air jet hole 226, it sprays the filaments that enter the filament groove 223 through the constriction groove 224 of the nozzle core 22 evenly. This causes the filaments in the filament groove 223 to generate vortices under the action of airflow, thereby achieving more uniform oiling of the filaments and producing uniform and slight network dots.

[0028] The pre-network nozzle core 22 of the present invention has a relatively simple structure, is easy to process and has low cost. Adjacent pre-network nozzle cores 22 are attached and arranged in a row for assembly, resulting in a small volume after assembly. Moreover, the distance D between the two nozzle cores 22 after assembly is only 4mm, compared with the distance D of 6.5mm between the two nozzle cores 12 after assembly in the prior art. The present invention achieves the lightweighting of the nozzle.

[0029] The wire guide 21 of this invention is designed with an open design, which allows the wire bundle to be easily and smoothly introduced from top to bottom during the lifting process. The introduction is convenient and smooth, and there will be no wire tangling or breakage. The lifting operation time is only about 1.5 minutes. In contrast, the wire guide 11 of the prior art is a closed design, which makes lifting more difficult and is prone to wire tangling or breakage. The lifting time is about 3 minutes. Therefore, the lifting operation time of this invention can be shortened by 50-60% compared with the prior art, and the amount of waste wire is reduced by about 50%.

[0030] The innovative nozzle core 22 design of this invention allows the filament bundle to remain in a vortex within the nozzle core 22 for a longer period due to the airflow, resulting in more uniform oil application. This also reduces compressed air pressure and consumption. Field tests have shown that this can save approximately 45-50% of compressed air consumption, saving on electricity costs, and the oil evenness and the formation of a light mesh are significantly superior to existing technologies.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It should be noted that any equivalent changes made by those skilled in the art after reading this specification, based on the design concept of this case, fall within the scope of protection of this case.

Claims

1. A novel, highly efficient, and energy-saving pre-network device, characterized in that: It features a base, open-type wire guides, and nozzle cores. The base has a side-mounted air pipe for compressed air intake, and an air chamber connecting the air pipe within the base. Upper and lower open-type wire guides are mounted side-by-side on the base, respectively. The open-type wire guides are columnar, with gaps between adjacent guides allowing the wire bundle to pass through. Nozzle cores are mounted side-by-side in the middle of the base. Each nozzle core has a long, block-like design with a front and rear plane. One front plane of adjacent nozzle cores aligns with the other rear plane. A long recess on the front plane forms a through-strip wire bundle groove, with the front plane receding above the groove opening. A constriction groove is formed between two adjacent nozzle cores. The interior of the nozzle core forms a compressed air channel that opens downwards and communicates with the air chamber of the base. A straight jet hole is opened on the rear plane to connect with the compressed air channel, and the height of the jet hole is aligned with the opening of the filament groove, so that the jet hole of one nozzle core is directly opposite the filament groove of the other nozzle core. The filament enters through the upper open filament guide, then enters the filament groove of the nozzle core through the constriction groove, and finally exits through the lower open filament guide. The compressed air enters the air chamber through the air pipe on the side of the base and is evenly distributed to the channels of each nozzle core. The jet hole evenly sprays the filaments in the filament grooves of adjacent nozzle cores.

2. The novel high-efficiency and energy-saving pre-network device according to claim 1, characterized in that: The open wire guide forms side slopes at the front and back of the gap.

3. The novel high-efficiency and energy-saving pre-network device according to claim 1, characterized in that: The top of the open wire guide forms a top slope that is high in the middle and low on both sides.

4. The novel high-efficiency and energy-saving pre-network device according to claim 1, characterized in that: The nozzle core forms a filament guide surface on the top of the elongated block shape.

5. The novel high-efficiency and energy-saving pre-network device according to claim 1, characterized in that: The bottom of the filament groove of the nozzle core is a platform surface and is directly opposite the opening of the filament groove.

6. The novel high-efficiency and energy-saving pre-network device according to claim 1, characterized in that: The channel of the nozzle core gradually widens from top to bottom.

7. A pre-network nozzle core, characterized in that: It features a long, block-shaped design with a front and rear plane. Two adjacent nozzle cores are arranged side by side, with one front plane fitting against the other rear plane. A long recess is designed on the front plane to form a through-strip-shaped filament groove. The front plane is recessed above the opening of the filament groove, forming a constricted groove between the two adjacent nozzle cores. The interior of the nozzle core forms a compressed air channel that opens downwards and communicates with the air chamber of the base. A straight jet hole is opened on the rear plane to communicate with the compressed air channel, and the height of the jet hole is aligned with the opening of the filament groove, so that the jet hole of one nozzle core is directly opposite the filament groove of the other nozzle core.

8. A pre-network nozzle core according to claim 7, characterized in that: The nozzle core forms a filament guide surface on the top of the elongated block shape.

9. A pre-network nozzle core according to claim 7, characterized in that: The bottom of the filament groove of the nozzle core is a platform surface and is directly opposite the opening of the filament groove.

10. A pre-network nozzle core according to claim 7, characterized in that: The channel of the nozzle core gradually widens from top to bottom.

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