High-speed co-spinning device for polyester POY

Abstract

The utility model provides a kind of dacron POY high-speed co-spinning device, can achieve the production of double melt compound simultaneously to make spinning hollow, more convenient for the production of hollow filament and profiled yarn. By replacing the actual nozzle of co-spinning spinneret, the co-spinning spinneret of the present application can be responsible for the production of profiled and octagonal star type spinning, and profiled yarn has better water absorption and other characteristics compared to traditional standard round yarn. Two distribution plates are used, and a plurality of co-spinning spinnerets are arranged below the distribution plates. The plurality of co-spinning spinnerets include two melt passages, which are connected to the two distribution plates respectively. The nozzles of the two melt passages are concentric. A gap is provided between the distribution plate and the co-spinning spinneret. A positioning plate is also needed below the co-spinning spinneret to assist in fixing the co-spinning spinneret. The positioning plate and the distribution plate are fixed in position.

Description

Technical Field

[0001] This utility model relates to polyester fiber spinning equipment, specifically to a high-speed co-spinning device for polyester POY. Background Technology

[0002] POY is pre-oriented yarn, which is a partially stretched chemical fiber filament obtained by high-speed spinning of polyethylene terephthalate. The degree of orientation is between that of unoriented yarn and drawn yarn. POY has a certain degree of orientation and good stability. It is generally used to stretch false twist textured yarn.

[0003] Chinese Patent Publication No. CN116397345 A, entitled "High-Speed ​​Co-spinning Device for Polyester POY," discloses a high-speed co-spinning device for polyester POY, comprising a worktable, a first rotating rod inserted into the inner cavity of a first rotating roller, with two first rubber wheels passing through both ends of the first rotating rod, and a first support rod fixedly connected to both ends of the first rotating rod, which is fixedly connected to the bottom of a fixed plate; a second rotating rod inserted into the inner cavity of a second rotating roller, with two second rubber wheels passing through both ends of the second rotating rod, and a second support rod fixedly connected to both ends of the second rotating rod, which is fixedly connected to the top of the worktable; and motors fixedly connected to the side of the first and second support rods near the connecting device, with the power output ends of the motors fixedly connected to the first and second rotating rods.

[0004] However, its drawback is that this co-spinning device is a specialized machine based on the production process of drawing polyethylene terephthalate melt into co-spun yarn by impregnating it with a concentrated organic solution. It is not suitable for filaments with island-type or split-type cross sections, and spinning for the above-mentioned cross section types requires a high-speed co-spinning device. Summary of the Invention

[0005] This invention addresses the limitations of existing co-spinning heads, which are typically island-type or organic solution-attached type as described in the background art. Such heads usually produce solid yarns, unsuitable for producing hollow yarns. The designed high-speed co-spinning device for polyester POY achieves the production of a double-melted compound while simultaneously creating hollow yarns, facilitating the production of hollow and profiled yarns. By changing the actual nozzle of the co-spinning spinneret, the proposed spinneret can handle the production of profiled and octagonal star-shaped yarns, and the profiled yarns exhibit better water absorption and other characteristics compared to traditional standard round yarns.

[0006] This utility model provides a high-speed co-spinning device for polyester POY, which uses two distribution plates and has a plurality of co-spinning spinnerets arranged under the distribution plates; the plurality of co-spinning spinnerets include two melt passages, which are respectively connected to the two distribution plates; the nozzles of the two melt passages are concentric.

[0007] A gap is provided between the distribution plate and the co-spinning spinneret; a positioning plate is also required below the co-spinning spinneret to help fix the co-spinning spinneret, and the positions of the positioning plate and the distribution plate are relatively fixed.

[0008] As a preferred option, a breathable passage is also fitted on the central axis of the co-spinning spinneret;

[0009] The two melt pathways are named the inner ring melt pathway and the outer ring melt pathway, respectively.

[0010] Connect the distribution plate and the co-spinning spinneret using a connector;

[0011] The inlet of the molten material passage opens vertically upwards;

[0012] The venting passage is created by inserting a separate insert block into the inner ring melt passage.

[0013] Preferably, the outer ring melt passage includes an annular distribution cavity. The annular distribution cavity allows the melt to enter the extrusion section uniformly, preventing defects in the outer peripheral spinning structure.

[0014] A groove is provided on the top surface of the positioning plate for positioning the co-spinning spinneret; the groove is circular with chamfered edges, and a trumpet-shaped nozzle is provided on the bottom surface of the positioning plate concentric with the groove. Although the distribution plate has certain positioning holes for arranging the insertion interface to guide the molten material into the co-spinning spinneret, this setting is beneficial for setting the subsequent optimal scheme, and can also reduce the shaking of the co-spinning spinneret when the positioning plate is clamped, which could lead to abnormal spinning.

[0015] A gap is provided between the groove of the positioning plate and the plate surface; an insertion interface is provided on the side of the positioning plate, which is used to input airflow;

[0016] An annular air gap is provided on the horn-shaped nozzle, which is formed by the gap between the co-spinning spinneret and the positioning plate.

[0017] The airflow in the gaps helps the filaments to gather relatively during ejection, thereby reducing the problem of filament breakage caused by the hollow structure.

[0018] The bottom of the insert block is conical, and the output plane of the venting passage is lower than the plane of the two molten material passages.

[0019] The beneficial effects of this utility model are as follows: it provides a co-spinning spinneret that can co-spin two kinds of molten fibers, which is suitable for manufacturing hollow yarns and profiled yarns, and its single-spinning structure is conducive to high-speed spinning. Attached Figure Description

[0020] Figure 1 Cross-sectional structure diagram of a co-spinning spinneret;

[0021] Figure 2 yes Figure 1 Enlarged view of point a on the spinneret of the Chinese textile mill;

[0022] In the diagram: 1. Co-spinning spinneret, 2. Individual insert block, 3. Connector, 4. Positioning plate, 11. Inner ring melt passage, 12. Outer ring melt passage, 41. Gap, 5. Cone. Detailed Implementation

[0023] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Example

[0024] like Figure 1 and Figure 2 As shown, the high-speed co-spinning device for polyester POY uses two distribution plates, and several co-spinning spinnerets are arranged under the distribution plates; the several co-spinning spinnerets include two melt passages, which are respectively connected to the two distribution plates; the nozzles of the two melt passages are concentric.

[0025] A gap is provided between the distribution plate and the co-spinning spinneret; a positioning plate is also required below the co-spinning spinneret 1 to help fix the co-spinning spinneret 1, and the positions of the positioning plate and the distribution plate are relatively fixed.

[0026] A ventilation passage is also fitted on the central axis of the co-spinning spinneret;

[0027] The two melt pathways are named inner ring melt pathway 11 and outer ring melt pathway 12, respectively;

[0028] Connect the distribution plate and the co-spinning spinneret using connector 3;

[0029] The inlet of the molten material passage opens vertically upwards;

[0030] The venting passage is provided by inserting a separate insert block 2 into the inner ring melt passage.

[0031] The outer ring melt passage includes an annular distribution cavity. The annular distribution cavity allows the melt to enter the extrusion section evenly, preventing defects in the outer peripheral spinning structure.

[0032] A groove is provided on the top surface of the positioning plate 4 for positioning the co-spinning spinneret; the groove is circular with chamfered edges, and a trumpet-shaped nozzle is provided on the bottom surface of the positioning plate concentric with the groove. Although the distribution plate has certain positioning holes for arranging the insertion interface to guide the molten material into the co-spinning spinneret, this setting is beneficial for setting the subsequent optimal scheme, and can also reduce the shaking of the co-spinning spinneret when the positioning plate is clamped, which could lead to abnormal spinning.

[0033] A gap 41 is provided between the groove of the positioning plate 4 and the plate surface; an insertion interface is provided on the side of the positioning plate, which is used to input airflow.

[0034] An annular air gap is provided on the horn-shaped nozzle, which is formed by the gap between the co-spinning spinneret and the positioning plate.

[0035] The airflow in the gaps helps the filaments to gather relatively during ejection, thereby reducing the problem of filament breakage caused by the hollow structure.

[0036] The bottom of the insert block is conical, and the output plane of the venting passage is lower than the plane of the two molten material passages.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-speed polyester POY co-spinning device, characterized in that, include: Two distribution plates are provided, and several co-spinning spinnerets are provided under the distribution plates; the several co-spinning spinnerets include at least two melt passages, which are respectively connected to the two distribution plates; the nozzles of the two melt passages are concentric. A gap is provided between the distribution plate and the co-spinning spinneret; a positioning plate is also required below the co-spinning spinneret to help fix the co-spinning spinneret, and the positions of the positioning plate and the distribution plate are relatively fixed.

2. The high-speed polyester POY co-spinning device according to claim 1, characterized in that, A ventilation passage is also fitted on the central axis of the co-spinning spinneret; The two melt pathways are named the inner ring melt pathway and the outer ring melt pathway, respectively. Connect the distribution plate and the co-spinning spinneret using a connector; The inlet of the molten material passage opens vertically upwards; The venting passage is created by inserting a separate insert block into the inner ring melt passage.

3. The high-speed polyester POY co-spinning device according to claim 2, characterized in that, The outer ring melt passage includes an annular distribution cavity.

4. The high-speed polyester POY co-spinning device according to claim 2, characterized in that, A groove is provided on the top surface of the positioning plate for positioning the co-spinning spinneret; The groove is circular with chamfered edges, and the bottom surface of the positioning plate, which is concentric with the groove, is provided with a trumpet-shaped nozzle.

5. A high-speed polyester POY co-spinning device according to claim 3, characterized in that, A gap is provided between the groove of the positioning plate and the plate surface; an insertion interface is provided on the side of the positioning plate, which is used to input airflow; An annular air gap is provided on the horn-shaped nozzle, which is formed by the gap between the co-spinning spinneret and the positioning plate.

6. A high-speed polyester POY co-spinning device according to claim 1 or 2, characterized in that, The bottom of the insert block is conical, and the output plane of the venting passage is lower than the plane of the two molten material passages.

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