A modular multi-stage drafting and winding device and a spinning, drafting and winding combined machine

Abstract

The present invention discloses a modular multi-stage drafting and winding device, which relates to the technical field of spinning production and solves the technical problem that the drafting and winding device in the related art can only produce a single type of product, resulting in a relatively high cost. The device includes a holding roller component, n pairs of drafting hot rollers, a relaxation guide disk, and a winding head, which are arranged in sequence according to the production process. The n pairs of drafting hot rollers include the first pair of drafting hot rollers, the second pair of drafting hot rollers, and up to the nth pair of drafting hot rollers arranged in sequence. The relaxation guide disk is arranged opposite to n-1 pairs of drafting hot rollers from the second pair of drafting hot rollers to the nth pair of drafting hot rollers to receive the tows led out from at least two pairs of drafting hot rollers among the second pair of drafting hot rollers to the nth pair of drafting hot rollers. It can meet the production of various industrial yarns such as ordinary, medium-strength, high-strength, low-shrinkage, and low-elongation and low-shrinkage yarns, achieve flexible operation with multiple functions in one machine, have a flexible production method, good matching, and improve the versatility of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of spinning production, and particularly to a modular multi-stage drawing and winding device and a spinning drawing and winding combined machine. Background Art

[0002] At present, the production process of industrial yarn fully drawn yarn (FDY) in synthetic fibers is mainly as follows: melt (polymer melt or chips → melting) → spinning and spraying → cooling → drawing and winding forming. Affected by factors such as equipment investment, site, the length of the drawing roller, and the characteristics of synthetic fiber products, most of the frame structures of the drawing and winding machines need to be designed separately according to the products, resulting in relatively single products produced, unable to freely produce different products with the same device, and having relatively high relative operating costs. Summary of the Invention

[0003] The present application provides a modular multi-stage drawing and winding device and a spinning drawing and winding combined machine, which solve the technical problem that the drawing and winding device in the related art can only produce single-type products and has high costs.

[0004] The present application provides a modular multi-stage drawing and winding device, including a holding roller component, n pairs of drawing hot rollers, a slack guide disk, and a winding head arranged in sequence according to the production process. The n pairs of drawing hot rollers include the first pair of drawing hot rollers, the second pair of drawing hot rollers, and up to the nth pair of drawing hot rollers arranged in sequence. n is a positive integer and ≥ 3. The slack guide disk is relatively arranged with n - 1 pairs of drawing hot rollers from the second pair of drawing hot rollers to the nth pair of drawing hot rollers to receive the tow drawn from at least two pairs of drawing hot rollers among the second pair of drawing hot rollers to the nth pair of drawing hot rollers.

[0005] Optionally, the modular multi-stage drawing and winding device further includes:

[0006] A lifting mechanism, connected to the slack guide disk to adjust the height of the slack guide disk.

[0007] Optionally, the n - 1 pairs of drawing hot rollers from the second pair of drawing hot rollers to the nth pair of drawing hot rollers are arranged in sequence along the horizontal direction, and are arranged in sequence along the height direction, and are all arranged on the same side of the first pair of drawing hot rollers;

[0008] The slack guide disk is arranged on the side of the n - 1 pairs of drawing hot rollers from the second pair of drawing hot rollers to the nth pair of drawing hot rollers close to the first pair of drawing hot rollers, or is arranged on the side of the n - 1 pairs of drawing hot rollers from the second pair of drawing hot rollers to the nth pair of drawing hot rollers far from the first pair of drawing hot rollers.

[0009] Optionally, the number of winding heads includes one or two; when the number of winding heads is two, the two winding heads are arranged side by side to simultaneously receive the tow drawn from the slack guide disk.

[0010] Optionally, the modular multi-stage drafting and winding device further includes a moving mechanism, and the moving mechanism includes:

[0011] A slide rail;

[0012] A slider mounting seat that slides on the slide rail, and the winding head is fixedly connected to the slider mounting seat;

[0013] A power component installed on one side of the winding head; and

[0014] A power component fixing seat connected to the side of the power component away from the winding head, and the power component fixing seat is relatively fixed to the slide rail.

[0015] Optionally, the modular multi-stage drafting and winding device further includes an oiling component, a filament cutting and suction component, a pre-network component, and a wire guiding component. The oiling component, the filament cutting and suction component, the pre-network component, the wire guiding component, the holding roller component, n pairs of drafting hot rollers, a slack guide disk, and the winding head are arranged in sequence according to the production process;

[0016] Among them, the arrangement direction of the spinning box assembly is perpendicular or parallel to the hot roller arrangement direction of n pairs of drafting hot rollers and the arrangement direction of the winding head.

[0017] Optionally, the oiling component includes two oiling mechanisms arranged at intervals in the vertical direction, and each oiling mechanism includes:

[0018] A lead screw and a lead screw nut installed on the lead screw;

[0019] A handwheel fixedly connected to the lead screw;

[0020] A mounting plate connected to the lead screw nut;

[0021] An oil nozzle or an oil wheel or an oil lip connected to the mounting plate;

[0022] An oil receiving box connected to the mounting plate; and

[0023] A wire guiding hook connected to the mounting plate.

[0024] Optionally, the modular multi-stage drafting and winding device is used for producing synthetic fiber polyester-polyamide-polypropylene ordinary high-strength yarn. When producing synthetic fiber polyester-polyamide-polypropylene ordinary high-strength yarn, the filament bundle passes through the holding roller component, the first pair of drafting hot rollers, the second pair of drafting hot rollers, the slack guide disk, and the winding head in sequence, where:

[0025] The holding roller component includes a holding roller and an adjustable-angle filament splitting roller. The surface of the roller housing of the holding roller component is ceramic or chrome-plated. The size of the holding roller is φ110mm - φ190mm, and the size of the adjustable-angle filament splitting roller is φ55mm - φ95mm. The filament bundle is evenly separated and wound 3 - 6 turns on the roller surface. The holding roller is not preheated or the heating temperature is 70 - 90°C, and the speed of the holding roller is 550 - 750m / min;

[0026] The size of the first pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The first pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the first pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds around the roller surface of the first pair of drafting and heating rollers for 4.5 - 7.5 turns. The heating temperature of the first pair of drafting and heating rollers is 80 - 180 °C, and the spinning speed of the first pair of drafting and heating rollers is 825 - 2000 m / min;

[0027] The size of the second pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The second pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the second pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds around the roller surface of the second pair of drafting and heating rollers for 4.5 - 7.5 turns. The heating temperature of the second pair of drafting and heating rollers is 110 - 180 °C, and the spinning speed of the second pair of drafting and heating rollers is 2000 - 4000 m / min;

[0028] The size of the relaxation guide disk is φ(150 - 220)x(160 - 250) mm. The surface of the relaxation guide disk is ceramic. The relaxation guide disk has no heating, and the speed of the relaxation guide disk is 1990 - 3990 m / min;

[0029] The speed of the winding head is 2000 - 4000 m / min.

[0030] Optionally, the modular multi-stage drafting and winding device is used for producing synthetic fiber polyester-polyamide-polypropylene medium-strength industrial yarn. The tow sequentially passes through the holding roller component, the first pair of drafting and heating rollers, the second pair of drafting and heating rollers, the third pair of drafting and heating rollers, the relaxation guide disk and the winding head, where:

[0031] The holding roller component includes a holding roller and an adjustable-angle filament dividing roller. The surface of the roller housing of the holding roller component is ceramic or chrome-plated. The size of the holding roller is φ110 mm - φ190 mm, and the size of the adjustable-angle filament dividing roller is φ55 mm - φ95 mm. The tow is evenly separated and winds around the roller surface for 3 - 6 turns. The holding roller is not preheated or has a heating temperature of 70 - 90 °C, and the speed of the holding roller is 550 - 750 m / min;

[0032] The size of the first pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The first pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the first pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds around the roller surface of the first pair of drafting and heating rollers for 4.5 - 7.5 turns. The heating temperature of the first pair of drafting and heating rollers is 80 - 180 °C, and the spinning speed of the first pair of drafting and heating rollers is 750 - 1500 m / min;

[0033] The size of the second pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The second pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller shell of the second pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the second pair of drafting and heating rollers. The heating temperature of the second pair of drafting and heating rollers is 110 - 200 °C, and the spinning speed of the second pair of drafting and heating rollers is 1500 - 3000 m / min;

[0034] The size of the third pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The third pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller shell of the third pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the third pair of drafting and heating rollers. The heating temperature of the third pair of drafting and heating rollers is 140 - 240 °C, and the spinning speed of the third pair of drafting and heating rollers is 2200 - 3800 m / min;

[0035] The size of the relaxation guide disk is φ(150 - 220)x(160 - 250) mm. The surface of the relaxation guide disk is ceramic. The relaxation guide disk has no heating, and the speed of the relaxation guide disk is 2190 - 3790 m / min;

[0036] The speed of the winding head is 2190 - 3790 m / min.

[0037] Optionally, the modular multi-stage drafting and winding device is used for producing synthetic fiber polyester-polyamide-polypropylene high-strength industrial yarn. When producing synthetic fiber polyester-polyamide-polypropylene high-strength industrial yarn, the tow sequentially passes through the holding roller component, the first pair of drafting and heating rollers, the second pair of drafting and heating rollers, the third pair of drafting and heating rollers, the fourth pair of drafting and heating rollers, the relaxation guide disk and the winding head, where:

[0038] The holding roller component includes a holding roller and an adjustable-angle filament splitting roller. The surface of the roller shell of the holding roller component is ceramic or chrome-plated. The size of the holding roller is φ110 mm - φ190 mm, and the size of the adjustable-angle filament splitting roller is φ55 mm - φ95 mm. The tow is evenly separated and winds 3 - 6 turns on the roller surface. The holding roller is not preheated or the heating temperature is 70 - 90 °C, and the speed of the holding roller is 550 - 750 m / min;

[0039] The size of the first pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The first pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller shell of the first pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the first pair of drafting and heating rollers. The heating temperature of the first pair of drafting and heating rollers is 80 - 180 °C, and the spinning speed of the first pair of drafting and heating rollers is 750 - 1500 m / min;

[0040] The size of the second pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The second pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller shell of the second pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the second pair of drafting and heating rollers. The heating temperature of the second pair of drafting and heating rollers is 110 - 200 °C, and the spinning speed of the second pair of drafting and heating rollers is 1500 - 2800 m / min;

[0041] The size of the third pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The third pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller shell of the third pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the third pair of drafting and heating rollers. The heating temperature of the third pair of drafting and heating rollers is 140 - 240 °C, and the spinning speed of the third pair of drafting and heating rollers is 1800 - 3200 m / min;

[0042] The size of the fourth pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The fourth pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller shell of the fourth pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the fourth pair of drafting and heating rollers. The heating temperature of the fourth pair of drafting and heating rollers is 140 - 240 °C, and the spinning speed of the fourth pair of drafting and heating rollers is 2500 - 3600 m / min;

[0043] The size of the slack guide is φ(150 - 220)x(160 - 250) mm. The surface of the slack guide is ceramic. The slack guide has no heating, and the speed of the slack guide is 2490 - 3590 m / min;

[0044] The speed of the winding head is 2490 - 3590 m / min.

[0045] Optionally, the modular multi-stage drafting and winding device is used for producing synthetic fiber polyester-polyamide-polypropylene low-shrinkage high-strength industrial yarn. When producing synthetic fiber polyester-polyamide-polypropylene low-shrinkage high-strength industrial yarn, the tow sequentially passes through the holding roller assembly, the first pair of drafting and heating rollers, the second pair of drafting and heating rollers, the third pair of drafting and heating rollers, the fourth pair of drafting and heating rollers, the fifth pair of drafting and heating rollers, the slack guide and the winding head, where:

[0046] The holding roller assembly includes a holding roller and an adjustable-angle filament splitting roller. The surface of the roller shell of the holding roller assembly is ceramic or chrome-plated. The size of the holding roller is φ110 mm - φ190 mm, and the size of the adjustable-angle filament splitting roller is φ55 mm - φ95 mm. The tow is evenly separated and winds 3 - 6 turns on the roller surface. The holding roller is not preheated or the heating temperature is 70 - 90 °C, and the speed of the holding roller is 550 - 750 m / min;

[0047] The size of the first pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The first pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the first pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the first pair of drafting and heating rollers. The heating temperature of the first pair of drafting and heating rollers is 80 - 180 °C, and the spinning speed of the first pair of drafting and heating rollers is 750 - 1500 m / min;

[0048] The size of the second pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The second pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the second pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the second pair of drafting and heating rollers. The heating temperature of the second pair of drafting and heating rollers is 110 - 200 °C, and the spinning speed of the second pair of drafting and heating rollers is 1500 - 2800 m / min;

[0049] The size of the third pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The third pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the third pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the third pair of drafting and heating rollers. The heating temperature of the third pair of drafting and heating rollers is 140 - 240 °C, and the spinning speed of the third pair of drafting and heating rollers is 1800 - 3200 m / min;

[0050] The size of the fourth pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The fourth pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the fourth pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the fourth pair of drafting and heating rollers. The heating temperature of the fourth pair of drafting and heating rollers is 140 - 240 °C, and the spinning speed of the fourth pair of drafting and heating rollers is 2500 - 3600 m / min;

[0051] The size of the fifth pair of drafting and heating rollers is φ(190 - 250)x(300 - 530) mm. The fifth pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the fifth pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the fifth pair of drafting and heating rollers. The heating temperature of the fifth pair of drafting and heating rollers is 150 - 250 °C, and the spinning speed of the fifth pair of drafting and heating rollers is 2490 - 3590 m / min;

[0052] The size of the relaxation guide disk is φ(150 - 220)x(160 - 250) mm. The surface of the relaxation guide disk is ceramic. The relaxation guide disk has no heating, and the speed of the relaxation guide disk is 2490 - 3590 m / min;

[0053] The speed of the winding head is 2490 - 3590 m / min.

[0054] Optionally, the modular multi-stage drafting and winding device is used for producing synthetic fiber polyester-polyamide-polypropylene low-elongation and low-shrinkage high-strength industrial yarns or synthetic fiber polyester-polyamide-polypropylene ultra-low-shrinkage high-strength industrial yarns. When producing synthetic fiber polyester-polyamide-polypropylene low-elongation and low-shrinkage high-strength industrial yarns or synthetic fiber polyester-polyamide-polypropylene ultra-low-shrinkage high-strength industrial yarns, the tow passes through a holding roller component, the first pair of drafting hot rollers, the second pair of drafting hot rollers, the third pair of drafting hot rollers, the fourth pair of drafting hot rollers, the fifth pair of drafting hot rollers, the sixth pair of drafting hot rollers, a relaxation guide disk and a winding head in sequence, wherein:

[0055] The holding roller component includes a holding roller and an adjustable-angle yarn dividing roller. The surface of the roller shell of the holding roller component is ceramic or chrome-plated. The size of the holding roller is φ110mm - φ190mm, and the size of the adjustable-angle yarn dividing roller is φ55mm - φ95mm. The tow is evenly separated and wound around the roller surface for 3 - 6 turns. The holding roller is not preheated or the heating temperature is 70 - 90°C, and the speed of the holding roller is 550 - 750m / min;

[0056] The size of the first pair of drafting hot rollers is φ(190 - 250)x(300 - 530)mm. The first pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller shell of the first pair of drafting hot rollers is ceramic or chrome-plated. The tow is wound around the roller surface of the first pair of drafting hot rollers for 4.5 - 7.5 turns. The heating temperature of the first pair of drafting hot rollers is 80 - 180°C, and the spinning speed of the first pair of drafting hot rollers is 750 - 1500m / min;

[0057] The size of the second pair of drafting hot rollers is φ(190 - 250)x(300 - 530)mm. The second pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller shell of the second pair of drafting hot rollers is ceramic or chrome-plated. The tow is wound around the roller surface of the second pair of drafting hot rollers for 4.5 - 7.5 turns. The heating temperature of the second pair of drafting hot rollers is 110 - 200°C, and the spinning speed of the second pair of drafting hot rollers is 1500 - 2800m / min;

[0058] The size of the third pair of drafting hot rollers is φ(190 - 250)x(300 - 530)mm. The third pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller shell of the third pair of drafting hot rollers is ceramic or chrome-plated. The tow is wound around the roller surface of the third pair of drafting hot rollers for 4.5 - 7.5 turns. The heating temperature of the third pair of drafting hot rollers is 140 - 240°C, and the spinning speed of the third pair of drafting hot rollers is 1800 - 3200m / min;

[0059] The size of the fourth pair of drafting hot rollers is φ(190 - 250)x(300 - 530) mm. The fourth pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the fourth pair of drafting hot rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the fourth pair of drafting hot rollers. The heating temperature of the fourth pair of drafting hot rollers is 140 - 240 °C, and the spinning speed of the fourth pair of drafting hot rollers is 2500 - 3600 m / min;

[0060] The size of the fifth pair of drafting hot rollers is φ(190 - 250)x(300 - 530) mm. The fifth pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the fifth pair of drafting hot rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the fifth pair of drafting hot rollers. The heating temperature of the fifth pair of drafting hot rollers is 150 - 250 °C, and the spinning speed of the fifth pair of drafting hot rollers is 2490 - 3590 m / min;

[0061] The size of the sixth pair of drafting hot rollers is φ(190 - 250)x(300 - 530) mm. The sixth pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the sixth pair of drafting hot rollers is ceramic or chrome-plated. The tow winds 4.5 turns to 7.5 turns on the roller surface of the sixth pair of drafting hot rollers. The heating temperature of the sixth pair of drafting hot rollers is 150 - 250 °C, and the spinning speed of the sixth pair of drafting hot rollers is 2490 - 3590 m / min;

[0062] The size of the relaxation guide disk is φ(150 - 220)x(160 - 250) mm. The surface of the relaxation guide disk is ceramic. The relaxation guide disk has no heating, and the speed of the relaxation guide disk is 2490 - 3590 m / min;

[0063] The speed of the winding head is 2490 - 3590 m / min.

[0064] A spinning-drafting-winding combined machine includes a spinning device and the above-mentioned modular multi-stage drafting-winding device. The tow coming out of the spinning device enters the modular multi-stage drafting-winding device.

[0065] The beneficial effects of this application are as follows: This application provides a modular multi-stage drafting and winding device. The silk path from n pairs of drafting hot rollers to the relaxation guide disk and winding disk is designed modularly. The tow passes through two, three, or any number from two to n of the n pairs of drafting hot rollers, and then is sent to the winder through the relaxation guide disk. By changing the number of rollers, the arrangement, roller speed, temperature, etc. of each pair of drafting hot rollers can be adjusted accordingly, which can meet the production requirements of various types of industrial silk, such as ordinary, medium-strength, high-strength silk, low-shrinkage, low-elongation and low-shrinkage silk, etc., so as to realize the production of different types of synthetic fiber industrial silk, meet the requirements of different products for parameters such as breaking strength, elongation at break, and dry heat shrinkage rate, achieve flexible operation with multiple functions, flexible production methods, good matching, meet the production requirements of various types of synthetic fiber industrial silk, improve the versatility of the equipment, and meet the market's requirements for the drafting and winding device in terms of improving production efficiency, energy conservation and consumption reduction, reducing investment, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention.

[0067] Figure 1 FIG. 1 is a schematic diagram of the first overall structure of the modular multi-stage drafting and winding device provided by this application;

[0068] Figure 2 is Figure 1 a side view of the structure shown in FIG. 1;

[0069] Figure 3 is Figure 1 a usage state diagram of the structure shown in FIG. 1;

[0070] Figure 4 is Figure 3 a side view of the structure shown in FIG. 2;

[0071] Figure 5 is Figure 1 another usage state diagram of the structure shown in FIG. 2;

[0072] Figure 6 is Figure 5 a side view of the structure shown in FIG. 3;

[0073] Figure 7 is Figure 1 another usage state diagram of the structure shown in FIG. 3;

[0074] Figure 8 is Figure 7 a side view of the structure shown in FIG. 4;

[0075] Figure 9 is Figure 1Another usage state diagram of the shown structure;

[0076] Figure 10 is Figure 9 Side view of the shown structure;

[0077] Figure 11 is Figure 1 Another usage state diagram of the shown structure;

[0078] Figure 12 is Figure 11 Side view of the shown structure;

[0079] Figure 13 Schematic diagram of the modular multi-stage drafting and winding device provided by the present application in parallel spinning;

[0080] Figure 14 Schematic diagram of the modular multi-stage drafting and winding device provided by the present application configured with two winding heads;

[0081] Figure 15 Schematic diagram of the modular multi-stage drafting and winding device provided by the present application with the slack guide disk located outside the hot roller;

[0082] Figure 16 Schematic diagram of the structure of the moving mechanism of the modular multi-stage drafting and winding device provided by the present application;

[0083] Figure 17 is Figure 16 Top view of the shown structure;

[0084] Figure 18 Double oiling schematic diagram of the modular multi-stage drafting and winding device provided by the present application;

[0085] Figure 19 Single oiling schematic diagram of the modular multi-stage drafting and winding device provided by the present application. Specific embodiments

[0086] By providing a modular multi-stage drafting and winding device and a spinning, drafting and winding combined machine in the embodiments of the present application, the technical problem of high cost in the related art that the drafting and winding device can only produce a single type of product is solved.

[0087] The technical solutions in the embodiments of the present application to solve the above technical problems are generally as follows:

[0088] A modular multi-stage drafting and winding device, comprising a holding roller component, n pairs of drafting hot rollers, a slack guide disk, and a winding head arranged in sequence according to the production process. The n pairs of drafting hot rollers include the first pair of drafting hot rollers, the second pair of drafting hot rollers up to the nth pair of drafting hot rollers arranged in sequence. n is a positive integer and ≥3. The slack guide disk is oppositely arranged with n - 1 pairs of drafting hot rollers from the second pair of drafting hot rollers up to the nth pair of drafting hot rollers to receive the tow drawn from at least two pairs of drafting hot rollers among the second pair of drafting hot rollers up to the nth pair of drafting hot rollers.

[0089] To better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the specification drawings and specific embodiments.

[0090] Embodiment 1

[0091] Please refer to Figure 1 and Figure 2 Combined with reference to Figures 3 to 12 This embodiment discloses a modular multi-stage drafting and winding device, comprising a holding roller component 6, n pairs of drafting hot rollers, a slack guide disk 12, and a winding head 16 arranged in sequence according to the production process. The n pairs of drafting hot rollers include the first pair of drafting hot rollers 7, the second pair of drafting hot rollers 8 up to the nth pair of drafting hot rollers arranged in sequence. n is a positive integer and ≥3. The slack guide disk 12 is oppositely arranged with n - 1 pairs of drafting hot rollers from the second pair of drafting hot rollers 8 up to the nth pair of drafting hot rollers to receive the tow drawn from at least two pairs of drafting hot rollers among the second pair of drafting hot rollers 8 up to the nth pair of drafting hot rollers.

[0092] It can be understood that in a modular multi-stage drafting and winding device with n > 3, the slack guide disk 12 can be configured to receive the tow drawn from any one of the drafting hot rollers from the second pair of drafting hot rollers 8 up to the nth pair of drafting hot rollers, so as to improve the production of a drafting and winding device that can achieve multiple spinning processes.

[0093] Specifically, a modular design is carried out for the silk path from the n pairs of drafting hot rollers to the slack guide disk 12 and the winding disk. The tow passes through at least two of the n pairs of drafting hot rollers, such as two pairs, three pairs up to n pairs, and even any one of them, and then is sent to the winding machine through the slack guide disk 12. By different numbers of rollers, the arrangement, roller speed, temperature, etc. of each pair of drafting hot rollers can be adjusted accordingly, which can meet the production of various industrial silk varieties such as ordinary, medium-strength, high-strength silk, low shrinkage, low elongation and low shrinkage, etc., so as to realize the production of different varieties of synthetic fiber industrial silk, meet the requirements of different products for parameters such as breaking strength, elongation at break, dry heat shrinkage rate, etc., achieve flexible operation with multiple functions in one machine, flexible production mode, good matching, meet the production requirements of various varieties of synthetic fiber industrial silk, improve the equipment versatility, and meet the market's requirements for the drafting and winding device in terms of improving production efficiency, energy conservation and consumption reduction, reducing investment, and reducing production costs.

[0094] Optionally, please refer to Figure 2 , in combination with reference to Figure 1 , the modular multi-stage drafting and winding device further includes a lifting mechanism 13, which is connected to the slack guide disk 12 to adjust the height of the slack guide disk 12. The spatial position of the slack guide disk 12, including the height, is changed by the lifting mechanism 13, so that a variety of spinning production can be applicable through only one slack guide disk 12, which is beneficial to cost saving and space utilization improvement. Among them, the lifting mechanism 13 can adopt forms such as cylinders.

[0095] Optionally, please refer to Figure 1 and Figure 2 , the n - 1 drafting hot rolls from the second pair of drafting hot rolls 8 to the nth pair of drafting hot rolls are arranged in sequence along the horizontal direction, and are arranged in sequence along the height direction, and are all arranged on the same side of the first pair of drafting hot rolls 7, so as to reasonably arrange the drafting hot rolls.

[0096] Optionally, please refer to Figure 1 , the slack guide disk 12 is arranged on the side of the n - 1 drafting hot rolls from the second pair of drafting hot rolls 8 to the nth pair of drafting hot rolls close to the first pair of drafting hot rolls 7, making the overall device compact, which is beneficial to space utilization improvement and the accommodation of more drafting devices in the workshop.

[0097] Optionally, please refer to Figure 15 , which is arranged on the side of the n - 1 drafting hot rolls from the second pair of drafting hot rolls 8 to the nth pair of drafting hot rolls far from the first pair of drafting hot rolls 7, and the mechanism spacing is large, facilitating operation.

[0098] Optionally, please refer to Figure 14 , in the modular multi-stage drafting and winding device, the number of winding heads 16 can be set to two, and the two winding heads 16 are arranged side by side to simultaneously receive the tow drawn from the slack guide disk 12. Specifically, compared with the setting of one winding head 16 shown in Figure 1 , considering the thickness difference of synthetic fibers, when spinning fine denier according to different requirements, 2 winding heads 16 can be placed, and the same configuration can achieve the same output as that of coarse denier, improving the production capacity effect.

[0099] Correspondingly, the number of winding heads 16 can also be set to a single one.

[0100] Optionally, please refer to Figure 16 and Figure 17, the modular multi-stage drafting and winding device further includes a moving mechanism 17, and the moving mechanism 17 includes a slide rail 17b, a slider mounting seat 17c, a power component 17d, and a power component fixing seat 17e. Specifically, the slide rail 17b is installed on the slide rail fixing bottom plate 17a, the slider mounting seat 17c is slidably installed on the slide rail 17b, the winding head 16 is fixedly connected to the slider mounting seat 17c, the power component 17d is installed on one side of the winding head 16, the power component fixing seat 17e is connected to the side of the power component 17d away from the winding head 16, and the power component fixing seat 17e is relatively fixed to the slide rail 17b. The power component 17d provides power to make the winding head 16 move relative to the slide rail 17b. The horizontal movement of the winding head 16 is assisted by the moving mechanism 17, so that when producing different varieties of spun yarns, the winding center position can be correspondingly and specifically moved. Among them, the moving mechanism 17 is configured with, for example, a fixing pin 17f. As Figure 16 shown, after the winding head 16 is moved in place, it is fixed by the fixing pin 17f.

[0101] Optionally, please refer to Figure 1 , the modular multi-stage drafting and winding device further includes an oiling component 2, a filament cutting and suction component 3, a pre-network component 4, and a wire guiding component 5. The oiling component 2, the filament cutting and suction component 3, the pre-network component 4, the wire guiding component 5, the holding roller component 6, n pairs of drafting hot rollers, the slack guide disk 12, and the winding head 16 are arranged in sequence according to the production process. Refer to Figure 2 , the tow passes through the slack guide disk 12 and then through the filament splitting and wire guiding component 14 and the final network component, and enters the winding head 16.

[0102] Optionally, the modular multi-stage drafting and winding device of this embodiment can adopt two methods: vertical spinning and parallel spinning.

[0103] Specifically, as Figure 1 shown, the arrangement direction of the spinning box assembly 1 is shown at point A at the top of the figure, which also corresponds to the arrangement direction of multiple tows. Figure 1 The structure shown in

[0104] is vertical spinning. The arrangement direction of the spinning box assembly 1 is perpendicular to the hot roller arrangement direction of n pairs of drafting hot rollers and the arrangement direction of the winding head 16, which has the advantage of a compact structure. However, the tow needs to be rotated 90° when entering the roller, and it is difficult to control the tow tension. Figure 13 shown, the arrangement direction of the spinning box assembly 1 is shown at the top of the figure. The arrangement direction of the spinning box assembly 1 is parallel to the hot roller arrangement direction of n pairs of drafting hot rollers and the arrangement direction of the winding head 16, which belongs to parallel spinning. It is beneficial to control the tow tension and greatly reduces the unevenness rate of the tensions of each tow at the same spinning position. However, it has the defect of a relatively large structural specification.

[0105] Optionally, as Figure 18 and Figure 19As shown in the figure, the oiling component 2 includes two oiling mechanisms arranged at intervals in the vertical direction. Each oiling mechanism includes a lead screw 2-1, a lead screw nut 2-2, a handwheel 2-3, a mounting plate 2-5, an oil nozzle or oil wheel or oil lip 2-4, an oil receiving box 2-7, and a wire guiding hook 2-6. The lead screw nut 2-2 is installed on the lead screw 2-1, the handwheel 2-3 is fixedly connected to the lead screw 2-1, the mounting plate 2-5 is connected to the lead screw nut 2-2, the oil nozzle or oil wheel or oil lip 2-4 is connected to the mounting plate 2-5, the oil receiving box 2-7 is connected to the mounting plate, and the wire guiding hook 2-6 is connected to the mounting plate.

[0106] Specifically, by operating the handwheel 2-3, the lead screw 2-1 is driven to rotate (the spatial position of the lead screw 2-1 remains unchanged, which is equivalent to the lead screw 2-1 being rotatably installed on the overall frame of the device). The lead screw nut 2-2 located on the lead screw 2-1 moves linearly along the lead screw 2-1, the mounting plate 2-5 located on the lead screw nut 2-2 moves, and the spatial positions of the oil nozzle or oil wheel or oil lip 2-4, the oil receiving box 2-7, and the wire guiding hook 2-6 all change with the operation of the handwheel 2-3. Thus, it is possible to control whether the oil nozzle or oil wheel or oil lip 2-4 contacts the tow 2-8, and thereby perform secondary oiling as shown in Figure 18 the figure, or primary oiling as shown in Figure 19 the figure.

[0107] It should be noted that as different varieties of spun fibers are produced, the length of the drafting hot roller may change. Therefore, a sufficiently large drafting housing is required. A longer drafting housing is suitable for hot rollers within a preset length range. The housing can be composed of a box body and a door movably arranged on the box body. Manual wire guiding and other operations can be carried out by opening the door.

[0108] Optionally, the holding roller component 6 includes a holding roller and a filament splitting roller. Its beneficial effects include: the holding roller component 6 pre-heats and holds the tow before drafting, so that the internal stress of the tow is relaxed to ensure good pre-drafting effect, and the temperature rises stably and slowly during the subsequent drafting, which is beneficial to uniform crystallization and orientation; the holding roller component 6 introduces the tow into the first pair of drafting hot roller 7 components, holds the tow, improves the tow jitter, and ensures a stable tension when the tow is drafted by the first pair of drafting hot roller 7 components; a certain pre-drafting effect is generated between the holding roller component 6 and the first pair of drafting hot rollers 7.

[0109] Embodiment 2

[0110] Based on the modular multi-stage drafting and winding device of Embodiment 1, this embodiment discloses that the modular multi-stage drafting and winding device is used for producing synthetic fiber polyester, nylon, and polypropylene ordinary high-strength filaments, that is, polyester, nylon, and polypropylene ordinary high-strength filaments. Refer to Figure 3 and Figure 4, when producing synthetic fiber polyester-polyamide-polypropylene ordinary high-tenacity yarn, the tow passes through the holding roller assembly 6, the first pair of drafting and heating rollers 7, the second pair of drafting and heating rollers 8, the slack guide disc 12 and the winding head 16 in sequence, where:

[0111] The holding roller assembly 6 includes a holding roller and an adjustable-angle filament splitting roller. The surface of the roller housing of the holding roller assembly 6 is ceramic or chrome-plated. The size of the holding roller is φ110mm - φ190mm, and the size of the adjustable-angle filament splitting roller is φ55mm - φ95mm. The tow is evenly separated and wound 3 - 6 turns on the roller surface. The holding roller is not preheated or the heating temperature is 70 - 90°C, and the speed of the holding roller is 550 - 750m / min;

[0112] The first pair of drafting and heating rollers 7 has a size of φ(190 - 250)x(300 - 530)mm. The first pair of drafting and heating rollers 7 includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller housing of the first pair of drafting and heating rollers 7 is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the first pair of drafting and heating rollers 7. The heating temperature of the first pair of drafting and heating rollers 7 is 80 - 180°C, and the spinning speed of the first pair of drafting and heating rollers 7 is 825 - 2000m / min;

[0113] The second pair of drafting and heating rollers 8 has a size of φ(190 - 250)x(300 - 530)mm. The second pair of drafting and heating rollers 8 includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller housing of the second pair of drafting and heating rollers 8 is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the second pair of drafting and heating rollers 8. The heating temperature of the second pair of drafting and heating rollers 8 is 110 - 180°C, and the spinning speed of the second pair of drafting and heating rollers 8 is 2000 - 4000m / min;

[0114] The slack guide disc 12 has a size of φ(150 - 220)x(160 - 250)mm. The surface of the slack guide disc 12 is ceramic. The slack guide disc 12 has no heating, and the speed of the slack guide disc 12 is 1990 - 3990m / min;

[0115] The speed of the winding head 16 is 2000 - 4000m / min.

[0116] Optionally, this embodiment is applicable to the production of ordinary high-tenacity yarn with a breaking strength of 4.5cN / dtex.

[0117] Example 3

[0118] Based on the modular multi-stage drafting and winding device of Example 1, this embodiment discloses a modular multi-stage drafting and winding device for producing medium-strength industrial yarns of synthetic fibers polyester-polyamide-polypropylene, that is, medium-strength industrial yarns of polyester, polyamide, and polypropylene. Refer to Figure 5 and Figure 6, the tow passes through the holding roller component 6, the first pair of drafting and heating rollers 7, the second pair of drafting and heating rollers 8, the third pair of drafting and heating rollers 9, the slack guide disk 12 and the winding head 16 in sequence, where:

[0119] The holding roller component 6 includes a holding roller and an adjustable-angle fiber dividing roller. The surface of the roller shell of the holding roller component 6 is ceramic or chrome-plated. The size of the holding roller is φ110mm - φ190mm, and the size of the adjustable-angle fiber dividing roller is φ55mm - φ95mm. The tow is evenly separated and wound 3 - 6 turns on the roller surface. The holding roller is not preheated or the heating temperature is 70 - 90°C, and the speed of the holding roller is 550 - 750m / min;

[0120] The first pair of drafting and heating rollers 7 has a size of φ(190 - 250)x(300 - 530)mm. The first pair of drafting and heating rollers 7 includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller shell of the first pair of drafting and heating rollers 7 is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the first pair of drafting and heating rollers 7. The heating temperature of the first pair of drafting and heating rollers 7 is 80 - 180°C, and the spinning speed of the first pair of drafting and heating rollers 7 is 750 - 1500m / min;

[0121] The second pair of drafting and heating rollers 8 has a size of φ(190 - 250)x(300 - 530)mm. The second pair of drafting and heating rollers 8 includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller shell of the second pair of drafting and heating rollers 8 is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the second pair of drafting and heating rollers 8. The heating temperature of the second pair of drafting and heating rollers 8 is 110 - 200°C, and the spinning speed of the second pair of drafting and heating rollers 8 is 1500 - 3000m / min;

[0122] The third pair of drafting and heating rollers 9 has a size of φ(190 - 250)x(300 - 530)mm. The third pair of drafting and heating rollers 9 includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller shell of the third pair of drafting and heating rollers 9 is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the third pair of drafting and heating rollers 9. The heating temperature of the third pair of drafting and heating rollers 9 is 140 - 240°C, and the spinning speed of the third pair of drafting and heating rollers 9 is 2200 - 3800m / min;

[0123] The slack guide disk 12 has a size of φ(150 - 220)x(160 - 250)mm. The surface of the slack guide disk 12 is ceramic. The slack guide disk 12 has no heating, and the speed of the slack guide disk 12 is 2190 - 3790m / min;

[0124] The speed of the winding head 16 is 2190 - 3790m / min.

[0125] Optionally, this embodiment is applicable to the production of medium-strength industrial yarn with a breaking strength of 7.0 cN / dtex.

[0126] Example 4

[0127] Based on the modular multi-stage drafting and winding device of Example 1, this example discloses that the modular multi-stage drafting and winding device is used for producing synthetic fiber polyester-polyamide-polypropylene high-strength industrial yarns, namely polyester, polyamide, and polypropylene high-strength industrial yarns. Refer to Figure 7 and Figure 8 , when producing synthetic fiber polyester-polyamide-polypropylene high-strength industrial yarns, the tow passes through the holding roller component 6, the first pair of drafting and heating rollers 7, the second pair of drafting and heating rollers 8, the third pair of drafting and heating rollers 9, the fourth pair of drafting and heating rollers 10, the relaxation guide disk 12, and the winding head 16 in sequence, where:

[0128] The holding roller component 6 includes a holding roller and an adjustable-angle filament splitting roller. The surface of the roller shell of the holding roller component 6 is ceramic or chrome-plated. The size of the holding roller is φ110mm - φ190mm, and the size of the adjustable-angle filament splitting roller is φ55mm - φ95mm. The tow is evenly separated and wound 3 - 6 turns on the roller surface. The holding roller is not preheated or the heating temperature is 70 - 90°C, and the speed of the holding roller is 550 - 750m / min;

[0129] The first pair of drafting and heating rollers 7 has a size of φ(190 - 250)x(300 - 530)mm. The first pair of drafting and heating rollers 7 includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller shell of the first pair of drafting and heating rollers 7 is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the first pair of drafting and heating rollers 7. The heating temperature of the first pair of drafting and heating rollers 7 is 80 - 180°C, and the spinning speed of the first pair of drafting and heating rollers 7 is 750 - 1500m / min;

[0130] The second pair of drafting and heating rollers 8 has a size of φ(190 - 250)x(300 - 530)mm. The second pair of drafting and heating rollers 8 includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller shell of the second pair of drafting and heating rollers 8 is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the second pair of drafting and heating rollers 8. The heating temperature of the second pair of drafting and heating rollers 8 is 110 - 200°C, and the spinning speed of the second pair of drafting and heating rollers 8 is 1500 - 2800m / min;

[0131] The third pair of drafting and heating rollers 9 has a size of φ(190 - 250)x(300 - 530)mm. The third pair of drafting and heating rollers 9 includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller shell of the third pair of drafting and heating rollers 9 is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the third pair of drafting and heating rollers 9. The heating temperature of the third pair of drafting and heating rollers 9 is 140 - 240°C, and the spinning speed of the third pair of drafting and heating rollers 9 is 1800 - 3200m / min;

[0132] The size of the fourth pair of drafting hot rollers 10 is φ(190 - 250) x (300 - 530) mm. The fourth pair of drafting hot rollers 10 includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the fourth pair of drafting hot rollers 10 is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the fourth pair of drafting hot rollers 10. The heating temperature of the fourth pair of drafting hot rollers 10 is 140 - 240 °C, and the spinning speed of the fourth pair of drafting hot rollers 10 is 2500 - 3600 m / min;

[0133] The size of the slack guide disk 12 is φ(150 - 220) x (160 - 250) mm. The surface of the slack guide disk 12 is ceramic. The slack guide disk 12 has no heating, and the speed of the slack guide disk 12 is 2490 - 3590 m / min;

[0134] The speed of the winding head 16 is 2490 - 3590 m / min.

[0135] Optionally, this embodiment is applicable to the production of high-strength industrial yarns with a breaking strength of 8.5 cN / dtex.

[0136] Example 5

[0137] Based on the modular multi-stage drafting and winding device of Example 1, this embodiment discloses that the modular multi-stage drafting and winding device is used for the production of synthetic fiber polyester-polyamide-polypropylene low-shrinkage high-strength industrial yarns, namely polyester, polyamide, and polypropylene low-shrinkage high-strength industrial yarns. Refer to Figure 9 and Figure 10 , when producing synthetic fiber polyester-polyamide-polypropylene low-shrinkage high-strength industrial yarns, the tow sequentially passes through the holding roller component 6, the first pair of drafting hot rollers 7, the second pair of drafting hot rollers 8, the third pair of drafting hot rollers 9, the fourth pair of drafting hot rollers 10, the fifth pair of drafting hot rollers 11, the slack guide disk 12, and the winding head 16, where:

[0138] The holding roller component 6 includes a holding roller and an adjustable-angle filament splitting roller. The surface of the roller housing of the holding roller component 6 is ceramic or chrome-plated. The size of the holding roller is φ110 mm - φ190 mm, and the size of the adjustable-angle filament splitting roller is φ55 mm - φ95 mm. The tow is evenly separated and winds 3 - 6 turns on the roller surface. The holding roller is not preheated or has a heating temperature of 70 - 90 °C, and the speed of the holding roller is 550 - 750 m / min;

[0139] The size of the first pair of drafting hot rollers 7 is φ(190 - 250) x (300 - 530) mm. The first pair of drafting hot rollers 7 includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the first pair of drafting hot rollers 7 is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the first pair of drafting hot rollers 7. The heating temperature of the first pair of drafting hot rollers 7 is 80 - 180 °C, and the spinning speed of the first pair of drafting hot rollers 7 is 750 - 1500 m / min;

[0140] The size of the second pair of drafting and heating rollers 8 is φ(190 - 250)x(300 - 530) mm. The second pair of drafting and heating rollers 8 includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the second pair of drafting and heating rollers 8 is ceramic or chrome-plated. The tow winds around the roller surface of the second pair of drafting and heating rollers 8 for 4.5 - 7.5 turns. The heating temperature of the second pair of drafting and heating rollers 8 is 110 - 200 °C, and the spinning speed of the second pair of drafting and heating rollers 8 is 1500 - 2800 m / min;

[0141] The size of the third pair of drafting and heating rollers 9 is φ(190 - 250)x(300 - 530) mm. The third pair of drafting and heating rollers 9 includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the third pair of drafting and heating rollers 9 is ceramic or chrome-plated. The tow winds around the roller surface of the third pair of drafting and heating rollers 9 for 4.5 - 7.5 turns. The heating temperature of the third pair of drafting and heating rollers 9 is 140 - 240 °C, and the spinning speed of the third pair of drafting and heating rollers 9 is 1800 - 3200 m / min;

[0142] The size of the fourth pair of drafting and heating rollers 10 is φ(190 - 250)x(300 - 530) mm. The fourth pair of drafting and heating rollers 10 includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the fourth pair of drafting and heating rollers 10 is ceramic or chrome-plated. The tow winds around the roller surface of the fourth pair of drafting and heating rollers 10 for 4.5 - 7.5 turns. The heating temperature of the fourth pair of drafting and heating rollers 10 is 140 - 240 °C, and the spinning speed of the fourth pair of drafting and heating rollers 10 is 2500 - 3600 m / min;

[0143] The size of the fifth pair of drafting and heating rollers 11 is φ(190 - 250)x(300 - 530) mm. The fifth pair of drafting and heating rollers 11 includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the fifth pair of drafting and heating rollers 11 is ceramic or chrome-plated. The tow winds around the roller surface of the fifth pair of drafting and heating rollers 11 for 4.5 - 7.5 turns. The heating temperature of the fifth pair of drafting and heating rollers 11 is 150 - 250 °C, and the spinning speed of the fifth pair of drafting and heating rollers 11 is 2490 - 3590 m / min;

[0144] The size of the relaxation guide disk 12 is φ(150 - 220)x(160 - 250) mm. The surface of the relaxation guide disk 12 is ceramic. The relaxation guide disk 12 has no heating, and the speed of the relaxation guide disk 12 is 2490 - 3590 m / min;

[0145] The speed of the winding head 16 is 2490 - 3590 m / min.

[0146] Optionally, this embodiment is applicable to the production of low-shrinkage and high-strength industrial yarns with a breaking strength of 8.0 cN / dtex.

[0147] Six pairs of rollers including the holding roller component 6 and five pairs of drafting hot rollers can overcome the limitations of conventional 4-5 roller spinning, where the stretching ratio distribution is restricted and the contact time between the raw silk and the roller body is short. Therefore, it is difficult to reduce the dry heat shrinkage rate of the fiber obtained after final treatment to a satisfactory range.

[0148] Example 6

[0149] Based on the modular multi-stage drafting and winding device of Example 1, this example discloses that the modular multi-stage drafting and winding device is used for producing synthetic fiber polyester-polyamide-polypropylene low-elongation, low-shrinkage, high-strength industrial yarn or synthetic fiber polyester-polyamide-polypropylene ultra-low-shrinkage, high-strength industrial yarn, that is, including polyester, polyamide, and polypropylene. Refer to Figure 11 and Figure 12 , when producing synthetic fiber polyester-polyamide-polypropylene low-elongation, low-shrinkage, high-strength industrial yarn or synthetic fiber polyester-polyamide-polypropylene ultra-low-shrinkage, high-strength industrial yarn, the tow passes through the holding roller component 6, the first pair of drafting hot rollers 7, the second pair of drafting hot rollers 8, the third pair of drafting hot rollers 9, the fourth pair of drafting hot rollers 10, the fifth pair of drafting hot rollers 11, the sixth pair of drafting hot rollers 18, the relaxation guide disk 12, and the winding head 16 in sequence, where:

[0150] The holding roller component 6 includes a holding roller and an adjustable-angle filament splitting roller. The surface of the roller housing of the holding roller component 6 is ceramic or chrome-plated. The size of the holding roller is φ110mm - φ190mm, and the size of the adjustable-angle filament splitting roller is φ55mm - φ95mm. The tow is evenly separated and wound 3 - 6 turns on the roller surface. The holding roller is not preheated or the heating temperature is 70 - 90°C, and the speed of the holding roller is 550 - 750m / min;

[0151] The first pair of drafting hot rollers 7 has a size of φ(190 - 250) x (300 - 530)mm. The first pair of drafting hot rollers 7 includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the first pair of drafting hot rollers 7 is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the first pair of drafting hot rollers 7. The heating temperature of the first pair of drafting hot rollers 7 is 80 - 180°C, and the spinning speed of the first pair of drafting hot rollers 7 is 750 - 1500m / min;

[0152] The second pair of drafting hot rollers 8 has a size of φ(190 - 250) x (300 - 530)mm. The second pair of drafting hot rollers 8 includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the second pair of drafting hot rollers 8 is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the second pair of drafting hot rollers 8. The heating temperature of the second pair of drafting hot rollers 8 is 110 - 200°C, and the spinning speed of the second pair of drafting hot rollers 8 is 1500 - 2800m / min;

[0153] The size of the third pair of drafting hot rolls 9 is φ(190 - 250)x(300 - 530) mm. The third pair of drafting hot rolls 9 includes a fixed hot roll and an adjustable-angle hot roll. The surface of the hot roll housing of the third pair of drafting hot rolls 9 is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roll surface of the third pair of drafting hot rolls 9. The heating temperature of the third pair of drafting hot rolls 9 is 140 - 240 °C, and the spinning speed of the third pair of drafting hot rolls 9 is 1800 - 3200 m / min;

[0154] The size of the fourth pair of drafting hot rolls 10 is φ(190 - 250)x(300 - 530) mm. The fourth pair of drafting hot rolls 10 includes a fixed hot roll and an adjustable-angle hot roll. The surface of the hot roll housing of the fourth pair of drafting hot rolls 10 is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roll surface of the fourth pair of drafting hot rolls 10. The heating temperature of the fourth pair of drafting hot rolls 10 is 140 - 240 °C, and the spinning speed of the fourth pair of drafting hot rolls 10 is 2500 - 3600 m / min;

[0155] The size of the fifth pair of drafting hot rolls 11 is φ(190 - 250)x(300 - 530) mm. The fifth pair of drafting hot rolls 11 includes a fixed hot roll and an adjustable-angle hot roll. The surface of the hot roll housing of the fifth pair of drafting hot rolls 11 is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roll surface of the fifth pair of drafting hot rolls 11. The heating temperature of the fifth pair of drafting hot rolls 11 is 150 - 250 °C, and the spinning speed of the fifth pair of drafting hot rolls 11 is 2490 - 3590 m / min;

[0156] The size of the sixth pair of drafting hot rolls 18 is φ(190 - 250)x(300 - 530) mm. The sixth pair of drafting hot rolls 18 includes a fixed hot roll and an adjustable-angle hot roll. The surface of the hot roll housing of the sixth pair of drafting hot rolls 18 is ceramic or chrome-plated. The tow winds 4.5 turns to 7.5 turns on the roll surface of the sixth pair of drafting hot rolls 18. The heating temperature of the sixth pair of drafting hot rolls 18 is 150 - 250 °C, and the spinning speed of the sixth pair of drafting hot rolls 18 is 2490 - 3590 m / min;

[0157] The size of the relaxation guide disk 12 is φ(150 - 220)x(160 - 250) mm. The surface of the relaxation guide disk 12 is ceramic. The relaxation guide disk 12 has no heating, and the speed of the relaxation guide disk 12 is 2490 - 3590 m / min;

[0158] The speed of the winding head 16 is 2490 - 3590 m / min.

[0159] Seven pairs of rollers, including a holding roller component 6 and six pairs of drafting and heating rollers, can adopt 5-roller stretching + 2-roller shaping. The seven pairs of rollers can overcome the limitations of the conventional 4- or 5-roller spinning method, where the stretching ratio distribution is restricted, and the contact time between the raw silk and the roller body is short. Therefore, it is difficult to reduce the dry heat shrinkage rate of the fiber obtained after final treatment to a satisfactory range, and it is also difficult to control the evenness of the yarn formed due to stretching. The seven pairs of rollers can extend the contact time between the fiber and the roller body and achieve more uniform stretching.

[0160] Example 7

[0161] This embodiment provides a spinning, drafting and winding combined machine, which includes a spinning device and the modular multi-stage drafting and winding device of Embodiments 1 to 6. Among them, referring to Figure 1 , the filament bundle coming out of the spinning device 100 enters the modular multi-stage drafting and winding device.

[0162] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0163] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A modular multi-stage drafting and winding device, characterized in that, the modular multi-stage drafting and winding device comprises a holding roller component, n pairs of drafting hot rollers, a slack guide disk and a winding head arranged in sequence according to the production process, the n pairs of drafting hot rollers include a first pair of drafting hot rollers, a second pair of drafting hot rollers up to the nth pair of drafting hot rollers arranged in sequence, n is a positive integer and ≥ 3; the slack guide disk is oppositely arranged with n - 1 pairs of drafting hot rollers from the second pair of drafting hot rollers to the nth pair of drafting hot rollers respectively, so as to receive the tow drawn out from at least two pairs of drafting hot rollers among the second pair of drafting hot rollers to the nth pair of drafting hot rollers; the modular multi-stage drafting and winding device is only provided with a single said slack guide disk, the modular multi-stage drafting and winding device further comprises a lifting mechanism, the lifting mechanism is connected with the slack guide disk to adjust the height where the slack guide disk is located; the roller length directions of the n - 1 pairs of drafting hot rollers from the second pair of drafting hot rollers to the nth pair of drafting hot rollers are all horizontal directions, and are arranged in sequence along the roller length direction, and are arranged in sequence along the height direction, and are all arranged on the same side of the first pair of drafting hot rollers; the slack guide disk is arranged on the side of the n - 1 pairs of drafting hot rollers from the second pair of drafting hot rollers to the nth pair of drafting hot rollers close to the first pair of drafting hot rollers, or is arranged on the side of the n - 1 pairs of drafting hot rollers from the second pair of drafting hot rollers to the nth pair of drafting hot rollers far from the first pair of drafting hot rollers; the modular multi-stage drafting and winding device further comprises a moving mechanism, the moving mechanism comprises a slide rail, a slider mounting seat, a power component and a power component fixing seat, the slider mounting seat slides on the slide rail, the winding head is fixedly connected with the slider mounting seat, the power component is installed on one side of the winding head, the power component fixing seat is connected to the side of the power component far from the winding head, and the power component fixing seat is relatively fixed with the slide rail; the modular multi-stage drafting and winding device further comprises an oiling component, in the process sequence, the oiling component is arranged before the holding roller component, the oiling component comprises two oiling mechanisms arranged at intervals in the vertical direction, the oiling mechanism comprises a lead screw, a lead screw nut installed on the lead screw, a hand wheel fixedly connected with the lead screw, a mounting plate connected to the lead screw nut, an oil nozzle or an oil wheel or an oil lip connected to the mounting plate, an oil receiving box connected to the mounting plate and a wire guiding hook connected to the mounting plate, and the oiling component is used for oiling the tow once or twice.

2. The modular multi-stage drafting and winding device according to claim 1, characterized in that, the number of the winding heads includes one or two; when the number of the winding heads is two, the two winding heads are arranged side by side to simultaneously receive the tow drawn out from the slack guide disk.

3. The modular multi-stage drafting and winding device according to claim 1, characterized in that, The modular multi-stage drafting and winding device further includes a filament cutting and suction component, a pre-network component, and a filament guiding component. The oiling component, the filament cutting and suction component, the pre-network component, the filament guiding component, the holding roller component, the n pairs of drafting hot rollers, the slack guide disc, and the winding head are arranged in sequence according to the production process; Among them, the arrangement direction of the spinning box assembly is perpendicular or parallel to the arrangement direction of the hot rollers of the n pairs of drafting hot rollers and the arrangement direction of the winding head.

4. The modular multi-stage drafting and winding device according to claim 1, characterized in that, the modular multi-stage drafting and winding device is used for producing synthetic fiber polyester-polyamide-polypropylene ordinary high-strength yarn. When producing synthetic fiber polyester-polyamide-polypropylene ordinary high-strength yarn, the tow passes through the holding roller component, the first pair of drafting hot rollers, the second pair of drafting hot rollers, the slack guide disc, and the winding head in sequence, where: The holding roller component includes a holding roller and an adjustable-angle filament dividing roller. The surface of the roller housing of the holding roller component is ceramic or chrome-plated. The size of the holding roller is φ110mm - φ190mm, and the size of the adjustable-angle filament dividing roller is φ55mm - φ95mm. The tow is evenly separated and wound 3 - 6 turns on the roller surface. The holding roller is not preheated or the heating temperature is 70 - 90°C, and the speed of the holding roller is 550 - 750m / min; The size of the first pair of drafting hot rollers is φ(190 - 250)×(300 - 530)mm. The first pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the first pair of drafting hot rollers is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the first pair of drafting hot rollers. The heating temperature of the first pair of drafting hot rollers is 80 - 180°C, and the spinning speed of the first pair of drafting hot rollers is 825 - 2000m / min; The size of the second pair of drafting hot rollers is φ(190 - 250)×(300 - 530)mm. The second pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the second pair of drafting hot rollers is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the second pair of drafting hot rollers. The heating temperature of the second pair of drafting hot rollers is 110 - 180°C, and the spinning speed of the second pair of drafting hot rollers is 2000 - 4000m / min; The size of the slack guide disc is φ(150 - 220)×(160 - 250)mm. The surface of the slack guide disc is ceramic. The slack guide disc has no heating, and the speed of the slack guide disc is 1990 - 3990m / min; The speed of the winding head is 2000 - 4000m / min.

5. The modular multi-stage drafting and winding device according to claim 1, characterized in that, the modular multi-stage drafting and winding device is used for producing synthetic fiber polyester-polyamide-polypropylene medium-strength industrial yarn. The tow passes through the holding roller component, the first pair of drafting hot rollers, the second pair of drafting hot rollers, the third pair of drafting hot rollers, the slack guide disc, and the winding head in sequence, where: The holding roller component includes a holding roller and an adjustable-angle filament splitting roller. The surface of the roller housing of the holding roller component is ceramic or chrome-plated. The size of the holding roller is φ110mm - φ190mm, and the size of the adjustable-angle filament splitting roller is φ55mm - φ95mm. The filament bundle is evenly separated and wound around the roller surface for 3 - 6 turns. The holding roller is not preheated or has a heating temperature of 70 - 90°C, and the speed of the holding roller is 550 - 750m / min; The size of the first pair of drafting and heating rollers is φ(190 - 250)×(300 - 530)mm. The first pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the first pair of drafting and heating rollers is ceramic or chrome-plated. The filament bundle is wound around the roller surface of the first pair of drafting and heating rollers for 4.5 - 7.5 turns. The heating temperature of the first pair of drafting and heating rollers is 80 - 180°C, and the spinning speed of the first pair of drafting and heating rollers is 750 - 1500m / min; The size of the second pair of drafting and heating rollers is φ(190 - 250)×(300 - 530)mm. The second pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the second pair of drafting and heating rollers is ceramic or chrome-plated. The filament bundle is wound around the roller surface of the second pair of drafting and heating rollers for 4.5 - 7.5 turns. The heating temperature of the second pair of drafting and heating rollers is 110 - 200°C, and the spinning speed of the second pair of drafting and heating rollers is 1500 - 3000m / min; The size of the third pair of drafting and heating rollers is φ(190 - 250)×(300 - 530)mm. The third pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the third pair of drafting and heating rollers is ceramic or chrome-plated. The filament bundle is wound around the roller surface of the third pair of drafting and heating rollers for 4.5 - 7.5 turns. The heating temperature of the third pair of drafting and heating rollers is 140 - 240°C, and the spinning speed of the third pair of drafting and heating rollers is 2200 - 3800m / min; The size of the slack guide disk is φ(150 - 220)×(160 - 250)mm. The surface of the slack guide disk is ceramic. The slack guide disk has no heating, and the speed of the slack guide disk is 2190 - 3790m / min; The speed of the winding head is 2190 - 3790m / min.

6. The modular multi-stage drafting and winding device according to claim 1, characterized in that, the modular multi-stage drafting and winding device is used for producing synthetic fiber polyester-polyamide-polypropylene high-strength industrial yarn. When producing synthetic fiber polyester-polyamide-polypropylene high-strength industrial yarn, the filament bundle sequentially passes through the holding roller component, the first pair of drafting and heating rollers, the second pair of drafting and heating rollers, the third pair of drafting and heating rollers, the fourth pair of drafting and heating rollers, the slack guide disk, and the winding head, wherein: The holding roller component includes a holding roller and an adjustable-angle filament splitting roller. The surface of the roller housing of the holding roller component is ceramic or chrome-plated. The size of the holding roller is φ110mm - φ190mm, and the size of the adjustable-angle filament splitting roller is φ55mm - φ95mm. The fiber bundle is evenly separated and wound around the roller surface for 3 - 6 turns. The holding roller is not preheated or the heating temperature is 70 - 90°C, and the speed of the holding roller is 550 - 750m / min; The size of the first pair of drafting and heating rollers is φ(190 - 250)×(300 - 530)mm. The first pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller housing of the first pair of drafting and heating rollers is ceramic or chrome-plated. The fiber bundle is wound around the roller surface of the first pair of drafting and heating rollers for 4.5 - 7.5 turns. The heating temperature of the first pair of drafting and heating rollers is 80 - 180°C, and the spinning speed of the first pair of drafting and heating rollers is 750 - 1500m / min; The size of the second pair of drafting and heating rollers is φ(190 - 250)×(300 - 530)mm. The second pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller housing of the second pair of drafting and heating rollers is ceramic or chrome-plated. The fiber bundle is wound around the roller surface of the second pair of drafting and heating rollers for 4.5 - 7.5 turns. The heating temperature of the second pair of drafting and heating rollers is 110 - 200°C, and the spinning speed of the second pair of drafting and heating rollers is 1500 - 2800m / min; The size of the third pair of drafting and heating rollers is φ(190 - 250)×(300 - 530)mm. The third pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller housing of the third pair of drafting and heating rollers is ceramic or chrome-plated. The fiber bundle is wound around the roller surface of the third pair of drafting and heating rollers for 4.5 - 7.5 turns. The heating temperature of the third pair of drafting and heating rollers is 140 - 240°C, and the spinning speed of the third pair of drafting and heating rollers is 1800 - 3200m / min; The size of the fourth pair of drafting and heating rollers is φ(190 - 250)×(300 - 530)mm. The fourth pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the roller housing of the fourth pair of drafting and heating rollers is ceramic or chrome-plated. The fiber bundle is wound around the roller surface of the fourth pair of drafting and heating rollers for 4.5 - 7.5 turns. The heating temperature of the fourth pair of drafting and heating rollers is 140 - 240°C, and the spinning speed of the fourth pair of drafting and heating rollers is 2500 - 3600m / min; The size of the slack guide disk is φ(150 - 220)×(160 - 250)mm. The surface of the slack guide disk is ceramic. The slack guide disk has no heating, and the speed of the slack guide disk is 2490 - 3590m / min; The speed of the winding head is 2490 - 3590m / min.

7. The modular multi-stage drafting and winding device according to claim 1, characterized in that, The modular multi-stage drafting and winding device is used for producing synthetic fiber polyester-polyamide-polypropylene low-shrinkage high-strength industrial yarn. When producing the synthetic fiber polyester-polyamide-polypropylene low-shrinkage high-strength industrial yarn, the tow passes through the holding roller component, the first pair of drafting hot rollers, the second pair of drafting hot rollers, the third pair of drafting hot rollers, the fourth pair of drafting hot rollers, the fifth pair of drafting hot rollers, the relaxation guide disk and the winding head in sequence, where: The holding roller component includes a holding roller and an adjustable-angle yarn splitting roller. The surface of the roller shell of the holding roller component is ceramic or chrome-plated. The size of the holding roller is φ110mm - φ190mm, and the size of the adjustable-angle yarn splitting roller is φ55mm - φ95mm. The tow is evenly separated and wound 3 - 6 turns on the roller surface. The holding roller is not preheated or the heating temperature is 70 - 90°C, and the speed of the holding roller is 550 - 750m / min; The size of the first pair of drafting hot rollers is φ(190 - 250)×(300 - 530)mm. The first pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller shell of the first pair of drafting hot rollers is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the first pair of drafting hot rollers. The heating temperature of the first pair of drafting hot rollers is 80 - 180°C, and the spinning speed of the first pair of drafting hot rollers is 750 - 1500m / min; The size of the second pair of drafting hot rollers is φ(190 - 250)×(300 - 530)mm. The second pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller shell of the second pair of drafting hot rollers is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the second pair of drafting hot rollers. The heating temperature of the second pair of drafting hot rollers is 110 - 200°C, and the spinning speed of the second pair of drafting hot rollers is 1500 - 2800m / min; The size of the third pair of drafting hot rollers is φ(190 - 250)×(300 - 530)mm. The third pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller shell of the third pair of drafting hot rollers is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the third pair of drafting hot rollers. The heating temperature of the third pair of drafting hot rollers is 140 - 240°C, and the spinning speed of the third pair of drafting hot rollers is 1800 - 3200m / min; The size of the fourth pair of drafting hot rollers is φ(190 - 250)×(300 - 530)mm. The fourth pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller shell of the fourth pair of drafting hot rollers is ceramic or chrome-plated. The tow is wound 4.5 - 7.5 turns on the roller surface of the fourth pair of drafting hot rollers. The heating temperature of the fourth pair of drafting hot rollers is 140 - 240°C, and the spinning speed of the fourth pair of drafting hot rollers is 2500 - 3600m / min; The size of the fifth pair of drafting and heating rollers is φ(190 - 250)×(300 - 530) mm. The fifth pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the fifth pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the fifth pair of drafting and heating rollers. The heating temperature of the fifth pair of drafting and heating rollers is 150 - 250 °C, and the spinning speed of the fifth pair of drafting and heating rollers is 2490 - 3590 m / min; The size of the slack guide disk is φ(150 - 220)×(160 - 250) mm. The surface of the slack guide disk is ceramic. The slack guide disk has no heating, and the speed of the slack guide disk is 2490 - 3590 m / min; The speed of the winding head is 2490 - 3590 m / min.

8. The modular multi-stage drafting and winding device according to claim 1, characterized in that the modular multi-stage drafting and winding device is used for producing synthetic fiber polyester-polyamide-polypropylene low-elongation low-shrinkage high-strength industrial yarn or synthetic fiber polyester-polyamide-polypropylene ultra-low-shrinkage high-strength industrial yarn. When producing synthetic fiber polyester-polyamide-polypropylene low-elongation low-shrinkage high-strength industrial yarn or synthetic fiber polyester-polyamide-polypropylene ultra-low-shrinkage high-strength industrial yarn, the tow sequentially passes through the holding roller component, the first pair of drafting and heating rollers, the second pair of drafting and heating rollers, the third pair of drafting and heating rollers, the fourth pair of drafting and heating rollers, the fifth pair of drafting and heating rollers, the sixth pair of drafting and heating rollers, the slack guide disk and the winding head, wherein: The holding roller component includes a holding roller and an adjustable-angle filament dividing roller. The surface of the roller housing of the holding roller component is ceramic or chrome-plated. The size of the holding roller is φ110 mm - φ190 mm, and the size of the adjustable-angle filament dividing roller is φ55 mm - φ95 mm. The tow is evenly separated and winds 3 - 6 turns on the roller surface. The holding roller is not preheated or the heating temperature is 70 - 90 °C, and the speed of the holding roller is 550 - 750 m / min; The size of the first pair of drafting and heating rollers is φ(190 - 250)×(300 - 530) mm. The first pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the first pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the first pair of drafting and heating rollers. The heating temperature of the first pair of drafting and heating rollers is 80 - 180 °C, and the spinning speed of the first pair of drafting and heating rollers is 750 - 1500 m / min; The size of the second pair of drafting and heating rollers is φ(190 - 250)×(300 - 530) mm. The second pair of drafting and heating rollers includes a fixed heating roller and an adjustable-angle heating roller. The surface of the heating roller housing of the second pair of drafting and heating rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the second pair of drafting and heating rollers. The heating temperature of the second pair of drafting and heating rollers is 110 - 200 °C, and the spinning speed of the second pair of drafting and heating rollers is 1500 - 2800 m / min; The size of the third pair of drafting hot rollers is φ(190 - 250)×(300 - 530) mm. The third pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the third pair of drafting hot rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the third pair of drafting hot rollers. The heating temperature of the third pair of drafting hot rollers is 140 - 240 °C, and the spinning speed of the third pair of drafting hot rollers is 1800 - 3200 m / min; The size of the fourth pair of drafting hot rollers is φ(190 - 250)×(300 - 530) mm. The fourth pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the fourth pair of drafting hot rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the fourth pair of drafting hot rollers. The heating temperature of the fourth pair of drafting hot rollers is 140 - 240 °C, and the spinning speed of the fourth pair of drafting hot rollers is 2500 - 3600 m / min; The size of the fifth pair of drafting hot rollers is φ(190 - 250)×(300 - 530) mm. The fifth pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the fifth pair of drafting hot rollers is ceramic or chrome-plated. The tow winds 4.5 - 7.5 turns on the roller surface of the fifth pair of drafting hot rollers. The heating temperature of the fifth pair of drafting hot rollers is 150 - 250 °C, and the spinning speed of the fifth pair of drafting hot rollers is 2490 - 3590 m / min; The size of the sixth pair of drafting hot rollers is φ(190 - 250)×(300 - 530) mm. The sixth pair of drafting hot rollers includes a fixed hot roller and an adjustable-angle hot roller. The surface of the hot roller housing of the sixth pair of drafting hot rollers is ceramic or chrome-plated. The tow winds 4.5 turns to 7.5 turns on the roller surface of the sixth pair of drafting hot rollers. The heating temperature of the sixth pair of drafting hot rollers is 150 - 250 °C, and the spinning speed of the sixth pair of drafting hot rollers is 2490 - 3590 m / min; The size of the relaxation guide disk is φ(150 - 220)×(160 - 250) mm. The surface of the relaxation guide disk is ceramic. The relaxation guide disk has no heating. The speed of the relaxation guide disk is 2490 - 3590 m / min; The speed of the winding head is 2490 - 3590 m / min.

9. A spinning, drafting and winding combined machine, characterized in that, it includes a spinning device and the modular multi-stage drafting and winding device according to any one of claims 1 - 8, and the tow coming out of the spinning device enters the modular multi-stage drafting and winding device.

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