Novel drawing process and device for preparing composite fibers

Abstract

The invention discloses a novel drawing process and device for preparing composite fibers, positioning bolts are arranged on the left side and the right side of a modular main frame, and positioning insertion holes are formed in the corresponding positions of the other sides of the positioning bolts. In order to solve the problem of unstable fiber performance caused by insufficient control precision of process parameters such as temperature and tension in the prior art, the temperature of the closed heating and stretching box body can be detected in real time by arranging the temperature detection device, and the working temperature is controlled, so that the processing precision is ensured, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of composite fiber processing, and in particular to a wire drawing process and a device for preparing a novel composite fiber. Background Art

[0002] Composite fiber is a kind of multi-component fiber, which is a term for artificial fiber varieties. There are two or more unmixed polymer fibers on the same fiber cross section. This kind of fiber is called composite fiber. It is a physically modified fiber developed in the 1960s. The composite fiber manufacturing technology can obtain two-component fibers with the characteristics of two polymers. There are parallel type, skin-core type, island type and other composite fibers, and the fiber cross section is round and special-shaped. The fiber has three-dimensional curling, high fluffiness and coverage, good conductivity, antistatic and flame retardancy. Composite fiber needs to be spun by a composite spinning machine with a special structure. It is mainly used for wool, blankets, wool fabrics, warm wadding fillings, silk fabrics, non-woven fabrics, medical and sanitary products and special work clothes.

[0003] According to the different types of polymers, components and configuration forms of the two components of composite fibers, there are hundreds of fiber varieties. According to the cross-section and longitudinal arrangement, composite fibers can be divided into skin-core type, parallel type, island type and split type.

[0004] Sheath-core composite fiber: a fiber in which two polymers continuously form the sheath and core layers along the longitudinal direction of the fiber. There are concentric and eccentric circular fibers, slightly irregular core sections, and sheath-core composite fibers with irregular sheaths and cores. Fibers with special materials as the core have special properties, such as making flame-retardant fibers with flame-retardant polymers as the core and ordinary polyester as the sheath.

[0005] Parallel composite fiber: composite fiber with two component polymers arranged on both sides of the fiber along the longitudinal direction, also known as bilateral structure type and half-moon type fiber, the two components can be equal or unequal. In order to prevent the interface peeling of the two component polymers and improve the fiber performance, the two component polymers with different properties are mostly the same type of polymers to increase the compatibility of the two component polymers at the interface.

[0006] Sea-island composite fiber: a composite fiber formed by uniformly embedding the dispersed phase polymer in the continuous phase polymer. The dispersed phase polymer is discontinuously distributed along the longitudinal direction of the fiber in the form of microfibrils, which is called matrix-microfiber type; the dispersed phase polymer is called dispersed type or lotus root core type. The two phases are composed of polymers of the same type but different properties, which is called dual-component sea-island fiber. The fiber has many unique properties, such as hygroscopicity, antistatic property, temperature and light sensitivity color change, dyeability, flame retardancy, etc.

[0007] At present, in actual use, the existing technology still has the problem of insufficient control accuracy of process parameters such as temperature and tension during the wire drawing process, resulting in unstable fiber performance. Summary of the invention

[0008] Therefore, in order to solve the above-mentioned problems, the present invention proposes a new type of wire drawing process and device for preparing composite fibers, which solves the technical problem that the control accuracy of process parameters such as temperature and tension during the wire drawing process is insufficient, resulting in unstable fiber performance.

[0009] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a new type of wire drawing device for preparing composite fibers, the structure of which includes a modular main frame, a positioning pin, a communication interface, a closed heating and stretching box, a composite fiber input tube, a composite fiber output tube, a first stretching roller group, a second stretching roller group, a temperature monitor, an upper movable fiber positioning wheel, an upper positioning wheel spring telescopic bracket, a lower movable fiber positioning wheel, a lower positioning wheel spring telescopic bracket, an output positioning wheel, and an air heating box. Positioning pins are arranged on both sides of the modular main frame, and positioning pins are arranged at corresponding positions on the other side. Positioning holes are also arranged on the side of the modular main frame for connecting with a central control or A communication interface for communication between other modules, a closed heating and stretching box is arranged on the front side of the modular main frame, a composite fiber input pipe is arranged on the left side of the closed heating and stretching box, a composite fiber output pipe is arranged on the right side of the closed heating and stretching box, a first stretching roller group and a second stretching roller group are arranged in the middle of the interior of the closed heating and stretching box, the stretching ratio of the current module is the ratio of the rotation speeds of the second stretching roller group and the first stretching roller group, an upper active fiber positioning wheel and a lower active fiber positioning wheel are arranged on the right side of the second stretching roller group for providing redundant length to avoid damage to the fiber due to excessive tension, and an output positioning wheel for positioning is arranged on the left side of the composite fiber output pipe.

[0010] Furthermore, the structure includes a first stretching roller group and a second stretching roller group, both of which are connected to the modular main frame through bearings and are driven to rotate by a motor arranged at the back of the modular main frame.

[0011] Furthermore, the upper movable fiber positioning wheel is connected to the upper positioning wheel spring telescopic bracket, and the lower movable fiber positioning wheel is connected to the lower positioning wheel spring telescopic bracket, so that the upper movable fiber positioning wheel and the lower movable fiber positioning wheel can move in the vertical direction.

[0012] Furthermore, an air heating box is arranged at the bottom of the closed heating and stretching box, an air pump is arranged inside the air heating box, the front end is connected to the closed heating and stretching box through a pipeline, the output end of the air pump is connected to the electric heater through a pipeline, the electric heater is refluxed to the closed heating and stretching box through the pipeline, a plurality of groups of electric heating wires that can be opened or closed individually are arranged in the electric heater, temperature monitors are arranged at the top and bottom of the closed heating and stretching box, the temperature monitor outputs an electrical signal to the temperature control chip, and the temperature control chip controls the switch of the electric heating wire in the electric heater.

[0013] A wire drawing process for preparing a new type of composite fiber, each modular mainframe is a stage, 4-7 stages are set in this process, one end from the fiber input is a stage, the stretching ratio of each stage is between 1-3, and the temperature in the heating box is 150-180 degrees Celsius.

[0014] Furthermore, when setting level 4, the maximum stretching ratio is 24 times, among which the stretching ratio of level 1 is set to 3, the stretching ratio of level 2 is set to 2, the stretching ratio of level 3 is set to 2, the stretching ratio of level 4 is set to 2, the temperature when stretching is set at 160 degrees Celsius, the temperature when stretching is set at 165 degrees Celsius, the temperature when stretching is set at 170 degrees Celsius, and the temperature when stretching is set at 170-180 degrees Celsius.

[0015] Furthermore, when setting level 6, the maximum stretching ratio is 45 times, among which the stretching ratio of level 1 is set to 2.5, the stretching ratio of level 2 is set to 2, the stretching ratio of level 3 is set to 2, the stretching ratio of level 4 is set to 2, the stretching ratio of level 5 is set to 1.5, and the stretching ratio of level 6 is set to 1.5. The temperature during stretching is set at 160 degrees Celsius for level 1, 165 degrees Celsius for level 2, 170 degrees Celsius for level 3, and 170-180 degrees Celsius for level 4 and thereafter.

[0016] Furthermore, when setting level 7, the maximum stretching ratio is 67.5 times, among which the stretching ratio of level 1 is set to 2.5, the stretching ratio of level 2 is set to 2, the stretching ratio of level 3 is set to 2, the stretching ratio of level 4 is set to 2, the stretching ratio of level 5 is set to 1.5, the stretching ratio of level 6 is set to 1.5, the stretching ratio of level 7 is set to 1.5, the temperature during stretching is set to 160 degrees Celsius for level 1, the temperature during stretching is set to 165 degrees Celsius for level 2, the temperature during stretching is set to 170 degrees Celsius for level 3, and the temperature during stretching is set to 170-180 degrees Celsius for level 4 and thereafter.

[0017] By adopting the aforementioned technical scheme, the beneficial effects of the present invention are as follows: the wire drawing process and device for preparing the new composite fiber improve the situation in which the control accuracy of process parameters such as temperature and tension is insufficient during the wire drawing process, resulting in unstable fiber performance. By setting a temperature detection device, the temperature of the closed heating and stretching box can be detected in real time, and the working temperature can be controlled, thereby ensuring processing accuracy and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] In the figure: 1. Modular main frame; 2. Positioning pin; 3. Communication interface; 4. Enclosed heating stretching box; 5. Composite fiber input pipe; 6. Composite fiber output pipe; 7. First stretching roller group; 8. Second stretching roller group; 9. Temperature monitor; 10. Upper movable fiber positioning wheel; 11. Upper positioning wheel spring telescopic bracket; 12. Lower movable fiber positioning wheel; 13. Lower positioning wheel spring telescopic bracket; 14. Output positioning wheel; 15. Air heating box; 16. Air pump; 17. Electric heater. DETAILED DESCRIPTION

[0020] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0021] refer to Figure 1 The present embodiment provides a new type of composite fiber preparation drawing process and device thereof, the structure of which includes a modular main frame 1, a positioning pin 2, a communication interface 3, a closed heating and drawing box 4, a composite fiber input pipe 5, a composite fiber output pipe 6, a first stretching roller group 7, a second stretching roller group 8, a temperature monitor 9, an upper movable fiber positioning wheel 10, an upper positioning wheel spring telescopic bracket 11, a lower movable fiber positioning wheel 12, a lower positioning wheel spring telescopic bracket 13, an output positioning wheel 14, and an air heating box 15. Positioning pins 2 are arranged on both sides of the modular main frame 1, and positioning holes are arranged at the corresponding positions on the other side of the positioning pin 2. The side of the modular main frame 1 is also provided with a central control or other module A communication interface 3 for communication between modules, a closed heating and stretching box 4 is arranged on the front side of the modular main frame 1, a composite fiber input pipe 5 is arranged on the left side of the closed heating and stretching box 4, and a composite fiber output pipe 6 is arranged on the right side of the closed heating and stretching box 4. A first stretching roller group 7 and a second stretching roller group 8 are arranged in the middle of the interior of the closed heating and stretching box 4. The stretching ratio of the current module is the ratio of the rotation speeds of the second stretching roller group 8 and the first stretching roller group 7. An upper active fiber positioning wheel 10 and a lower active fiber positioning wheel 12 are arranged on the right side of the second stretching roller group 8 for providing redundant length to avoid damage to the fiber due to excessive tension, and an output positioning wheel 14 for positioning is arranged on the left side of the composite fiber output pipe 6.

[0022] Its structure includes a first stretching roller group 7 and a second stretching roller group 8, both of which are connected to the modular main frame 1 through bearings and are driven to rotate by a motor arranged at the back of the modular main frame 1.

[0023] The upper movable fiber positioning wheel 10 is connected to the upper positioning wheel spring telescopic bracket 11, and the lower movable fiber positioning wheel 12 is connected to the lower positioning wheel spring telescopic bracket 13, so that the upper movable fiber positioning wheel 10 and the lower movable fiber positioning wheel 12 can move in the vertical direction.

[0024] An air heating box 15 is arranged at the bottom of the closed heating and stretching box 4, and an air pump 16 is arranged inside the air heating box 15. The front end is connected to the closed heating and stretching box 4 through a pipeline, and the output end of the air pump 16 is connected to the electric heater 17 through a pipeline. The electric heater 17 flows back to the closed heating and stretching box 4 through the pipeline. A plurality of groups of electric heating wires that can be opened or closed individually are arranged in the electric heater 17. Temperature monitors 9 are arranged on the top and bottom of the closed heating and stretching box 4. The temperature monitors 9 output electrical signals to the temperature control chip, and the temperature control chip controls the switch of the electric heating wires in the electric heater 17.

[0025] A wire drawing process for preparing a new type of composite fiber, each modular mainframe is a stage, 4-7 stages are set in this process, one end from the fiber input is a stage, the stretching ratio of each stage is between 1-3, and the temperature in the heating box is 150-180 degrees Celsius.

[0026] Embodiment 2

[0027] When set to level 4, the maximum stretching ratio is 24 times, among which the stretching ratio of level one is 3, the stretching ratio of level two is 2, the stretching ratio of level three is 2, and the stretching ratio of level four is 2. The temperature when stretching is set at 160 degrees Celsius, the temperature when stretching is set at 165 degrees Celsius, the temperature when stretching is set at 170 degrees Celsius, and the temperature when stretching is set at 170-180 degrees Celsius.

[0028] Embodiment 3

[0029] When set to level 6, the maximum stretching ratio is 45 times, among which the stretching ratio of level 1 is set to 2.5, the stretching ratio of level 2 is set to 2, the stretching ratio of level 3 is set to 2, the stretching ratio of level 4 is set to 2, the stretching ratio of level 5 is set to 1.5, and the stretching ratio of level 6 is set to 1.5. The temperature when stretching is set at 160 degrees Celsius, the temperature when stretching is set at 165 degrees Celsius, the temperature when stretching is set at 170 degrees Celsius at level 3, and the temperature when stretching is set at 170-180 degrees Celsius at level 4 and above.

[0030] Embodiment 4

[0031] When set to level 7, the maximum stretching ratio is 67.5 times, among which the stretching ratio of level one is set to 2.5, the stretching ratio of level two is set to 2, the stretching ratio of level three is set to 2, the stretching ratio of level four is set to 2, the stretching ratio of level five is set to 1.5, the stretching ratio of level six is ​​set to 1.5, and the stretching ratio of level seven is set to 1.5. The temperature when stretching is set at 160 degrees Celsius, the temperature when stretching is set at 165 degrees Celsius at level two, the temperature when stretching is set at 170 degrees Celsius at level three, and the temperature when stretching is set at 170-180 degrees Celsius at level four and above.

[0032] The wire drawing process and device for preparing the novel composite fiber improve the situation in which the control accuracy of process parameters such as temperature and tension is insufficient during the wire drawing process, resulting in unstable fiber performance. By setting a temperature detection device, the temperature of the closed heating and stretching box 4 can be detected in real time, and the working temperature can be controlled, thereby ensuring the processing accuracy and improving the product quality.

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new type of composite fiber drawing device, characterized in that: Its structure includes a modular main frame, a positioning pin, a communication interface, a closed heating and stretching box, a composite fiber input pipe, a composite fiber output pipe, a first stretching roller group, a second stretching roller group, a temperature monitor, an upper movable fiber positioning wheel, an upper positioning wheel spring telescopic bracket, a lower movable fiber positioning wheel, a lower positioning wheel spring telescopic bracket, an output positioning wheel, and an air heating box. Positioning pins are arranged on both sides of the modular main frame, and positioning pins are arranged at corresponding positions on the other side. A communication interface for communicating with a central control or other modules is also arranged on the side of the modular main frame. A closed heating and stretching box is arranged on the front side of the main frame, a composite fiber input pipe is arranged on the left side of the closed heating and stretching box, a composite fiber output pipe is arranged on the right side of the closed heating and stretching box, a first stretching roller group and a second stretching roller group are arranged in the middle of the interior of the closed heating and stretching box, the stretching ratio of the current module is the ratio of the rotation speeds of the second stretching roller group and the first stretching roller group, an upper active fiber positioning wheel and a lower active fiber positioning wheel for providing redundant length to avoid damage to the fiber due to excessive tension are arranged on the right side of the second stretching roller group, and an output positioning wheel for positioning is arranged on the left side of the composite fiber output pipe.

2. The wire drawing process and device for preparing a novel composite fiber according to claim 1, characterized in that: The structure includes a first stretching roller group and a second stretching roller group, both of which are connected to a modular main frame through bearings and driven to rotate by a motor arranged at the back of the modular main frame.

3. The wire drawing process and device for preparing a novel composite fiber according to claim 1, characterized in that: The upper movable fiber positioning wheel is connected to the upper positioning wheel spring telescopic bracket, and the lower movable fiber positioning wheel is connected to the lower positioning wheel spring telescopic bracket, so that the upper movable fiber positioning wheel and the lower movable fiber positioning wheel can move in the vertical direction.

4. The wire drawing process and device for preparing a novel composite fiber according to claim 1, characterized in that: An air heating box is arranged at the bottom of the closed heating and stretching box, an air pump is arranged inside the air heating box, the front end is connected to the closed heating and stretching box through a pipeline, the output end of the air pump is connected to the electric heater through a pipeline, the electric heater is refluxed to the closed heating and stretching box through the pipeline, a plurality of groups of electric heating wires which can be opened or closed individually are arranged in the electric heater, temperature monitors are arranged on the top and bottom of the closed heating and stretching box, the temperature monitors output electrical signals to the temperature control chip, and the temperature control chip controls the switch of the electric heating wires in the electric heater.

5. A new type of wire drawing process for preparing composite fibers, characterized in that: Each modular mainframe is a level. In this process, 4-7 levels are set. One end from the fiber input is a level. The stretching ratio of each level is between 1-3. The temperature in the heating box is 150-180 degrees Celsius.

6. The wire drawing process and device for preparing a novel composite fiber according to claim 5, characterized in that: When set to level 4, the maximum stretching ratio is 24 times, among which the stretching ratio of level one is 3, the stretching ratio of level two is 2, the stretching ratio of level three is 2, and the stretching ratio of level four is 2. The temperature when stretching is set at 160 degrees Celsius, the temperature when stretching is set at 165 degrees Celsius, the temperature when stretching is set at 170 degrees Celsius, and the temperature when stretching is set at 170-180 degrees Celsius.

7. The wire drawing process and device for preparing a novel composite fiber according to claim 5, characterized in that: When set to level 6, the maximum stretching ratio is 45 times, among which the stretching ratio of level 1 is set to 2.5, the stretching ratio of level 2 is set to 2, the stretching ratio of level 3 is set to 2, the stretching ratio of level 4 is set to 2, the stretching ratio of level 5 is set to 1.5, and the stretching ratio of level 6 is set to 1.

5. The temperature when stretching is set at 160 degrees Celsius, the temperature when stretching is set at 165 degrees Celsius, the temperature when stretching is set at 170 degrees Celsius at level 3, and the temperature when stretching is set at 170-180 degrees Celsius at level 4 and above.

8. The wire drawing process and device for preparing a novel composite fiber according to claim 5, characterized in that: When set to level 7, the maximum stretching ratio is 67.5 times, among which the stretching ratio of level one is set to 2.5, the stretching ratio of level two is set to 2, the stretching ratio of level three is set to 2, the stretching ratio of level four is set to 2, the stretching ratio of level five is set to 1.5, the stretching ratio of level six is ​​set to 1.5, and the stretching ratio of level seven is set to 1.

5. The temperature when stretching is set at 160 degrees Celsius, the temperature when stretching is set at 165 degrees Celsius at level two, the temperature when stretching is set at 170 degrees Celsius at level three, and the temperature when stretching is set at 170-180 degrees Celsius at level four and above.

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