Production equipment and production process of high-elastic cotton-conditioning comfortable quick-drying chemical fiber knitted fabric

Abstract

The invention provides production equipment and a production process of high-elastic cotton-conditioning comfortable quick-drying chemical fiber knitted fabric, the production equipment comprises a knitting device for knitting gray fabric, an after-finishing device for performing functional finishing on the gray fabric and a finished product winding device which are connected in sequence, the knitting device comprises a rack, a yarn conveyor and a knitting mechanism, the yarn conveying device and the knitting mechanism are both arranged on the machine frame, a tension adjusting mechanism is arranged between the yarn conveying device and the knitting mechanism, and the tension adjusting mechanism comprises a distribution shaft, a plurality of adjusting cams coaxially installed on the distribution shaft and tension executing rods in abutting contact with the adjusting cams. The tension executing rod is provided with a yarn guide hook used for allowing yarn to penetrate through. A mechanical structure is adopted, yarn tension can be adjusted synchronously with a knitting mechanism, and therefore the different tension requirements of different areas of a cloth cover are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textiles, in particular to a high-elasticity cotton comfort type quick-drying chemical fiber knitted fabric production equipment and a production process thereof. BACKGROUND

[0002] The production process of chemical fiber knitted fabric usually needs to first produce filaments or short fibers in a chemical fiber factory, then go through front-end processes such as elasticizing and warping, then perform weaving on a knitting machine, and finally obtain the final product through post-finishing processes such as dyeing, printing, and functional finishing (such as antibacterial, moisture-wicking, and anti-ultraviolet). When weaving high-elasticity quick-drying knitted fabric, the uniformity and stability of yarn tension directly affect the elasticity, flatness, and functionality of the fabric. The existing tension devices are mostly integral or simple segmented, and the tension is uniformly applied, which cannot be synchronized with the pattern changes of the fabric, resulting in that when complex organizations (such as jacquard and tuck) are woven, the tension requirements of different areas of the fabric cannot be differentiated, and defects such as uneven loops, loss of elasticity, or instability of quick-drying structure are prone to occur.

[0003] In view of the above defects in the prior art, the present application is developed. SUMMARY

[0004] The purpose of the present application is to provide a high-elasticity cotton comfort type quick-drying chemical fiber knitted fabric production equipment that uses a mechanical structure to adjust the yarn tension synchronously with the weaving mechanism, thereby meeting the different tension requirements of different areas of the fabric.

[0005] In order to achieve the above purpose, the solution of the present application is: a high-elasticity cotton comfort type quick-drying chemical fiber knitted fabric production equipment, comprising a knitting device for weaving gray fabric, a post-finishing device for functional finishing of the gray fabric, and a finished product winding device connected in sequence, the knitting device comprising a rack, a yarn feeder, and a weaving mechanism, the yarn feeder and the weaving mechanism being arranged on the rack, and a tension adjusting mechanism being arranged between the yarn feeder and the weaving mechanism, the tension adjusting mechanism comprising a distribution shaft, a plurality of adjusting cams coaxially installed on the distribution shaft, and a tension execution rod in contact with each adjusting cam, respectively, the tension execution rod being provided with a guide hook for threading the yarn.

[0006] Further, in order to convert the rotary motion of the adjusting cam into the linear motion of the tension execution rod, a guide sleeve for guiding the linear motion of the tension execution rod is arranged on the rack, the tension execution rod is movably threaded in the guide sleeve, a return spring is sleeved on the side of the tension execution rod close to the adjusting cam, a limiting flange is further arranged on the tension execution rod outside the return spring, and the guide hook is arranged on the other side of the tension execution rod.

[0007] Furthermore, in order to quickly adjust the yarn tension, the angle between the reciprocating linear motion direction of the tension actuator and the yarn conveying direction is 15° to 60°.

[0008] Furthermore, to ensure synchronization between the tension adjustment mechanism and the knitting mechanism, the knitting mechanism includes a needle bed and a loop-forming drive assembly. The needle bed is equipped with several knitting needles, and the loop-forming drive assembly is connected to the needle bed to drive the knitting needles to knit. The distribution shaft is connected to the loop-forming drive assembly for transmission so that it rotates synchronously with the loop-forming drive assembly, thereby driving the adjustment cam to rotate synchronously to adjust the yarn tension.

[0009] Furthermore, in order to perform functional finishing on the fabric and improve its elasticity, the finishing device includes a drafting mechanism, a setting mechanism, and a cooling mechanism. The drafting mechanism includes a first pair of drafting rollers, a second pair of drafting rollers, and a third pair of drafting rollers arranged sequentially along the drafting direction of the fabric. The first pair of drafting rollers, the second pair of drafting rollers, and the third pair of drafting rollers are arranged in a spatial curve, and the linear velocities of the first pair of drafting rollers, the second pair of drafting rollers, and the third pair of drafting rollers increase sequentially to form a non-linearly increasing drafting gradient.

[0010] Furthermore, in order to improve the elasticity of the fabric, the first drafting roller pair includes two first rollers with elastic rubber layers on their surfaces, and the third drafting roller includes two heating rollers, each of which is equipped with a heater.

[0011] Furthermore, in order to improve the elasticity of the fabric, the second drafting roller pair includes two second rollers with an elliptical structure, the straight lines containing the focal lines of the two second rollers intersecting to allow for slight kneading of the knitted fabric during drafting.

[0012] Furthermore, in order to heat-set the fabric, the setting mechanism includes two centrally symmetrically arranged arc-shaped rollers. Each arc-shaped roller has a hollow cavity inside, which is connected to a heater and a fan. The roller surface of the arc-shaped rollers is evenly distributed with a number of micro-holes for hot air to pass through. The roller surface of the arc-shaped rollers is provided with a first arc-shaped surface, a second arc-shaped surface, and a third arc-shaped surface in sequence along the fabric conveying direction. The radius of the second arc-shaped surface is larger than the radius of the first arc-shaped surface, and the radius of the second arc-shaped surface is larger than the radius of the third arc-shaped surface.

[0013] Furthermore, in order to cool the fabric, the cooling mechanism includes a cooler, which has a cooling channel for circulating cooling water. The upper side of the cooler is provided with a curved panel, and the curved panel has several air outlet gaps along the fabric travel direction. The cooler is provided with a vortex generator that communicates with the air outlet gaps, and the air outlet angle of the air outlet gaps forms an acute angle with the fabric travel direction.

[0014] Another objective of this invention is to address the above-mentioned shortcomings by providing a production process for a high-elasticity, comfortable, quick-drying chemical fiber knitted fabric production equipment that employs a mechanical structure and can synchronously adjust yarn tension with the knitting mechanism to meet the different tension requirements of different areas of the fabric surface.

[0015] Another solution adopted by the present invention to solve the above-mentioned technical problems is: a production process for a high-elasticity cotton-adjustable, comfortable, quick-drying chemical fiber knitted fabric production equipment, comprising the following steps:

[0016] S1: The yarn is fed to the knitting mechanism by the yarn feeder and the tension adjustment mechanism. The tension adjustment mechanism adjusts the yarn tension as the loop forming drive component moves. The loop forming drive component drives the knitting needles to knit the greige fabric.

[0017] S2: The fabric is introduced into the drafting mechanism. The first drafting roller pair, the second drafting roller pair and the third drafting roller pair with sequentially increasing linear speed pre-stretch the fabric in a gradient manner. At the same time, the second roller pair performs a slight rubbing on the fabric to improve the elasticity of the fabric.

[0018] S3: The pre-stretched fabric enters the setting mechanism. Under the continuously changing curved bending stress of the arc roller, the fabric is heat-set by high-pressure hot air penetrating vertically.

[0019] S4: The fabric that has been heat-set then enters the cooling mechanism. The eddy current generator forms a laminar airflow on the curved panel, which quickly and evenly cools and sets the fabric, finally yielding the finished fabric.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] (1) This invention achieves the application of completely different tension change curves to the yarns in different zones at the same time through independent and customized adjustment cams and tension actuators. Through differentiated tension control, regions with gradient elasticity (such as high elasticity zone, medium elasticity zone, and stable zone) can be seamlessly woven on the same piece of fabric, thereby truly meeting the differentiated tension requirements of yarns in different regions when weaving complex patterns. Furthermore, through the mechanically preset dynamic tension, more uniform coils can be formed in the high elasticity zone, more stable yarn grip can be provided in the dense structure zone, and fiber arrangement can be optimized through micro-tension fluctuations in the quick-drying functional zone, thereby improving the overall fabric quality. At the same time, tension adjustment can also affect the orientation and aggregation state of fibers at the micro level, thereby actively forming a better capillary network in areas that need accelerated moisture removal (such as the back and underarms), and strengthening the quick-drying function.

[0022] (2) The present invention uses the non-linear increasing tension gradient formed by the stretching mechanism and the high-frequency micro-kneading action of the intermediate roller to make the fiber macromolecular chains oriented and form micro gaps between the fibers, thereby forming an initial elastic structure.

[0023] (3) The present invention uses the continuously changing curved surface bending stress formed by the shaping mechanism and the fabric is vertically penetrated by high-pressure hot air to rearrange the fiber crystallization area, thereby fixing the elastic deformation. At the same time, the fabric is penetrated by hot air in the bending state to form perforations, so that the fiber cross section has a controllable tendency to become irregular (tending to polygonal or grooved) rather than flattened, thereby forming permanent capillary channels. Subsequently, under the rapid and uniform cooling of the air laminar flow formed by the cooling mechanism, the fiber morphology is instantly locked, thereby permanently fixing the elastic memory and fiber cross section morphology formed during heat setting, and finally obtaining a finished fabric with both high elasticity and excellent wicking and quick-drying functions. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] Fig. 1 This is a schematic diagram of the tension adjustment mechanism;

[0026] Fig. 2 A schematic diagram of the structure of the adjusting cam and tension actuator;

[0027] Fig. 3 This is a schematic diagram of the post-treatment device.

[0028] In the diagram: 1. Distribution shaft; 2. Adjusting cam; 3. Tension actuator; 4. Yarn guide hook; 5. Guide sleeve; 6. Return spring; 7. Yarn; 8. First drafting roller pair; 9. Second drafting roller pair; 10. Third drafting roller pair; 11. Curved roller; 12. Cooler; 13. Eddy current generator. Detailed Implementation

[0029] To further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0030] Example 1: As Figs. 1-3As shown, this embodiment provides a production equipment for high-elasticity, comfortable, quick-drying chemical fiber knitted fabric, including a knitting device for knitting greige fabric, a finishing device for functional finishing of the greige fabric, and a finished product winding device connected in sequence. The knitting device includes a frame, a yarn feeder, and a knitting mechanism. The yarn feeder and the knitting mechanism are both mounted on the frame, and a tension adjusting mechanism is provided between the yarn feeder and the knitting mechanism. The tension adjusting mechanism includes a distribution shaft 1, several adjusting cams 2 coaxially mounted on the distribution shaft 1, and tension actuators 3 that abut against each adjusting cam 2. The number of adjusting cams 2 corresponds to the number of yarn 7 sections to be controlled, and the contour curve of the adjusting cam 2 is adjusted according to the tension of the corresponding fabric section. The design incorporates variations, and the adjusting cam 2 features a detachable structure to allow for selection of different cam 2 profiles based on different fabrics. The tension actuator 3 is equipped with a yarn guide hook 4 for threading the yarn 7. Here, the distribution shaft 1 is connected to the main drive shaft of the knitting machine via a rigid mechanical transmission chain, with its axis parallel to the fabric width direction. This converts the rotational motion of the main shaft into precise linear reciprocating motion of multiple independent tension actuators 3. Furthermore, the motion pattern (phase, stroke) of each tension actuator 3 can be independently set according to the pattern structure of the fabric to provide different additional tension to the yarns 7 in different zones at the same time, thereby applying dynamic and differentiated tension to the yarns 7 that matches the loop formation position.

[0031] In this embodiment, in order to convert the rotational motion of the adjusting cam 2 into the linear motion of the tension actuator 3, the frame is provided with a guide sleeve 5 for guiding the tension actuator 3 to make linear motion. The tension actuator 3 is movably inserted into the guide sleeve 5. A return spring 6 is sleeved on the side of the tension actuator 3 near the adjusting cam 2. The tension actuator 3 is also provided with a limiting flange located outside the return spring 6. The yarn guide hook 4 is provided on the other side of the tension actuator 3.

[0032] In this embodiment, in order to quickly adjust the tension of the yarn 7, the angle between the reciprocating linear motion direction of the tension actuator 3 and the conveying direction of the yarn 7 is 15° to 60°, and the tension adjustment is achieved by changing the wrap angle and path length of the yarn 7.

[0033] In this embodiment, to ensure that the tension adjustment mechanism is synchronized with the knitting mechanism, the knitting mechanism includes a needle bed and a loop-forming drive assembly. The needle bed is provided with a plurality of knitting needles. The loop-forming drive assembly is connected to the needle bed to drive the knitting needles to knit. The distribution shaft 1 is connected to the loop-forming drive assembly for transmission so as to rotate synchronously with the loop-forming drive assembly, thereby driving the adjustment cam 2 to rotate synchronously to adjust the tension of the yarn 7.

[0034] In this embodiment, in order to perform functional finishing on the fabric and improve its elasticity, the finishing device includes a drafting mechanism, a setting mechanism, and a cooling mechanism. The drafting mechanism includes a first drafting roller pair 8, a second drafting roller pair 9, and a third drafting roller pair 10 arranged sequentially along the drafting direction of the fabric. The first drafting roller pair 8, the second drafting roller pair 9, and the third drafting roller pair 10 are arranged in a spatial curve, and the linear velocities of the first drafting roller pair 8, the second drafting roller pair 9, and the third drafting roller pair 10 increase sequentially to form a non-linearly increasing drafting gradient.

[0035] In this embodiment, in order to improve the elasticity of the fabric, the first drafting roller pair 8 includes two first rollers with elastic rubber layers on their surfaces to stably hold the fabric, and the third drafting roller includes two heating rollers, each of which is equipped with a heater.

[0036] In this embodiment, in order to improve the elasticity of the fabric, the second drafting roller pair 9 includes two second rollers with an elliptical structure, and the straight lines containing the focal lines of the two second rollers intersect to allow for slight kneading of the knitted fabric during drafting.

[0037] In this embodiment, in order to heat-set the fabric, the setting mechanism includes two centrally symmetrically arranged arc-shaped rollers 11. Each arc-shaped roller 11 has a hollow cavity, which is divided into several chambers along the fabric travel direction. Each chamber is connected to a heater and a fan. The roller surface of the arc-shaped roller 11 is evenly distributed with several micro-holes for hot air to pass through, so as to achieve gradient heat treatment along the fabric width and travel direction. The roller surface of the arc-shaped roller 11 is sequentially provided with a first arc-shaped surface, a second arc-shaped surface, and a third arc-shaped surface along the fabric conveying direction. The radius of the second arc-shaped surface is larger than the radius of the first arc-shaped surface, and the radius of the second arc-shaped surface is larger than the radius of the third arc-shaped surface. The radius of curvature of the arc-shaped roller 11 changes continuously along the fabric travel direction, so that the fabric experiences a change in bending stress from large to small and then slightly increasing.

[0038] In this embodiment, in order to cool the fabric, the cooling mechanism includes a cooler 12, which has a cooling channel for circulating cooling water. The upper side of the cooler 12 is provided with a curved panel, and the curved panel has several air outlet gaps along the fabric travel direction. The cooler 12 is provided with a vortex generator 13 that communicates with the air outlet gaps. The air outlet angle of the air outlet gaps is at an acute angle to the fabric travel direction to form a low-temperature air laminar flow, thereby rapidly and uniformly cooling and shaping the high-temperature fabric in a non-contact state.

[0039] Example 2: A production process for a high-elasticity, comfortable, quick-drying chemical fiber knitted fabric production equipment includes the following steps:

[0040] S1: Yarn 7 is fed to the knitting mechanism by the yarn feeder and the tension adjustment mechanism. The tension adjustment mechanism adjusts the tension of yarn 7 as the loop forming drive component moves. The loop forming drive component drives the knitting needles to knit the greige fabric.

[0041] S2: The fabric is introduced into the drafting mechanism. The first drafting roller pair 8, the second drafting roller pair 9 and the third drafting roller pair 10, with their linear speeds increasing sequentially, pre-stretch the fabric. At the same time, the second roller pair performs micro-rubbing on the fabric, causing the fiber macromolecular chains to align in an orientation and forming micro-gap between the fibers to improve the elasticity of the fabric.

[0042] S3: The pre-stretched fabric enters the setting mechanism. Under the continuously changing curved bending stress of the arc roller 11, the fabric is vertically penetrated by high-pressure hot air, causing partial rearrangement of the fiber crystallization area, fixing the elastic deformation, and achieving heat setting.

[0043] S4: The heat-set fabric then enters the cooling mechanism. The vortex generator 13 forms a low-temperature air laminar flow on the curved panel, which quickly and evenly cools and sets the fabric, locking the fiber morphology instantly, and finally obtaining the finished fabric.

[0044] This invention utilizes an independent, custom-designed adjusting cam 2 and tension actuator 3 to simultaneously apply completely different tension change curves to the yarns 7 in different zones. Through differentiated tension control, regions with gradient elasticity (such as high-elasticity, medium-elasticity, and stable zones) can be seamlessly woven into the same fabric. This truly meets the differentiated tension requirements of yarns 7 in different regions when weaving complex patterns. Furthermore, through mechanically preset dynamic tension, more uniform loops can be formed in high-elasticity regions, more stable yarn 7 grip can be provided in densely structured regions, and fiber arrangement can be optimized through micro-tension fluctuations in quick-drying regions, thus improving the overall fabric quality. At the same time, tension adjustment can also microscopically affect the orientation and aggregation of fibers, thereby actively forming a better capillary network in areas requiring accelerated moisture wicking (such as the back and underarms), enhancing the quick-drying function.

[0045] This invention utilizes a non-linearly increasing tension gradient formed by a stretching mechanism and the high-frequency micro-kneading action of the intermediate roller to induce directional alignment of fiber macromolecular chains, while simultaneously creating micro-gaps between fibers, thereby forming an initial elastic structure.

[0046] This invention utilizes a shaping mechanism to create continuously varying curved surface bending stress, and employs high-pressure hot air to vertically penetrate the fabric, causing partial rearrangement of the fiber crystallization zone, thereby fixing the elastic deformation. Simultaneously, the fabric is penetrated by hot air in a bent state, forming perforations, causing the fiber cross-section to exhibit a controllable tendency towards irregular shape (tending towards polygonal or grooved shapes) rather than flattening, thus forming permanent capillary channels. Subsequently, under the rapid and uniform cooling of the air laminar flow formed by the cooling mechanism, the fiber morphology is instantly locked, thereby permanently fixing the elastic memory and fiber cross-sectional morphology formed during heat setting, ultimately resulting in a finished fabric that combines high elasticity and excellent wicking and quick-drying functions.

[0047] The above embodiments and figures are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A production equipment for high-elasticity, comfortable, quick-drying chemical fiber knitted fabric, characterized in that: The application relates to a knitting device for weaving grey cloth, a post-finishing device for functionally finishing the grey cloth and a finished product winding device, which are sequentially connected, the knitting device comprises a rack, a yarn feeder and a knitting mechanism, the yarn feeder and the knitting mechanism are arranged on the rack, a tension adjusting mechanism is arranged between the yarn feeder and the knitting mechanism, the tension adjusting mechanism comprises a distribution shaft, a plurality of adjusting cams coaxially arranged on the distribution shaft and a tension executing rod in contact with each adjusting cam, a guide hook for threading the yarn is arranged on the tension executing rod.

2. The high-elasticity cotton comfort type quick-drying chemical fiber knitted fabric production equipment according to claim 1, characterized in that: A guide sleeve for guiding the linear motion of the tension executing rod is arranged on the rack, the tension executing rod is movably threaded in the guide sleeve, a reset spring is arranged on the side of the tension executing rod close to the adjusting cam, a limiting flange outside the reset spring is further arranged on the tension executing rod, and the guide hook is arranged on the other side of the tension executing rod.

3. The high-elasticity cotton comfort type quick-drying chemical fiber knitted fabric production equipment according to claim 1, characterized in that: The included angle between the reciprocating linear motion direction of the tension executing rod and the yarn conveying direction is 15-60 degrees.

4. The high-elasticity cotton comfort type quick-drying chemical fiber knitted fabric production equipment according to claim 1, characterized in that: The knitting mechanism comprises a needle bed and a loop forming driving assembly, a plurality of knitting needles are arranged on the needle bed, the loop forming driving assembly is connected with the needle bed to drive the knitting needles to knit, the distribution shaft is in transmission connection with the loop forming driving assembly to rotate synchronously with the loop forming driving assembly, so that the adjusting cams are synchronously rotated to adjust the tension of the yarn.

5. The high-elasticity cotton comfort type quick-drying chemical fiber knitted fabric production equipment according to claim 1, characterized in that: The post-finishing device comprises a drafting mechanism, a setting mechanism and a cooling mechanism, the drafting mechanism comprises a first drafting roller pair, a second drafting roller pair and a third drafting roller pair which are sequentially arranged along the drafting direction of the grey cloth, the first drafting roller pair, the second drafting roller pair and the third drafting roller pair are arranged in a spatial curve, and the linear speeds of the first drafting roller pair, the second drafting roller pair and the third drafting roller pair are sequentially increased to form a non-linearly increased drafting gradient.

6. The high-elasticity cotton comfort type quick-drying chemical fiber knitted fabric production equipment according to claim 5, characterized in that: The first drafting roller pair comprises two first rollers with elastic rubber layers on the surfaces, and the third drafting roller pair comprises two heating rollers, each of which is internally provided with a heater.

7. The high-elasticity cotton comfort type quick-drying chemical fiber knitted fabric production equipment according to claim 5, characterized in that: The second drafting roller pair comprises two second rollers with an elliptical structure, and the straight lines where the focal distances of the two second rollers are located intersect each other so that the knitted cloth is slightly rubbed during drafting.

8. The high-elasticity cotton comfort type quick-drying chemical fiber knitted fabric production equipment according to claim 5, characterized in that: The setting mechanism comprises two arc-shaped rollers which are centrally and symmetrically arranged, the arc-shaped rollers are internally provided with hollow cavities, the hollow cavities are connected with heaters and fans, the roller surfaces of the arc-shaped rollers are uniformly provided with a plurality of micro-holes for passing hot air, the roller surfaces of the arc-shaped rollers are sequentially provided with a first arc-shaped surface, a second arc-shaped surface and a third arc-shaped surface along the conveying direction of the grey cloth, the radius of the second arc-shaped surface is larger than that of the first arc-shaped surface, and the radius of the second arc-shaped surface is larger than that of the third arc-shaped surface.

9. The high-elasticity cotton comfort type quick-drying chemical fiber knitted fabric production equipment according to claim 5, characterized in that: The cooling mechanism comprises a cooler, the cooler is internally provided with a cooling channel for circulating and flowing cooling water, the upper side of the cooler is provided with a curved surface plate, a plurality of air outlet slits are arranged on the curved surface plate along the advancing direction of the grey cloth, the cooler is internally provided with a vortex generator in communication with the air outlet slits, and the air outlet angle of the air outlet slits and the advancing direction of the grey cloth form an acute angle.

10. The production process of the high-elasticity cotton comfort-type quick-drying chemical fiber knitted fabric production equipment according to any one of claims 1-9, characterized in that: The method comprises the following steps: S1: the yarn is sent to the knitting mechanism by the yarn feeder through the tension adjusting mechanism, the tension adjusting mechanism adjusts the yarn tension according to the movement of the loop forming driving assembly, and the loop forming driving assembly drives the knitting needle to move to knit the fabric; S2: the fabric is guided into the drafting mechanism, the first drafting roller pair, the second drafting roller pair and the third drafting roller pair with gradually increasing linear speeds are arranged in gradient to pre-draft the fabric, and at the same time, the second roller pair rubs the fabric with a small amplitude to improve the elasticity of the fabric; S3: the pre-drafted fabric enters the setting mechanism, under the continuous change of the curved surface bending stress of the arc-shaped roller, the fabric is vertically penetrated by high-pressure hot air for heat setting; S4: the fabric after heat setting enters the cooling mechanism immediately, the vortex generator forms air laminar flow on the curved surface plate, and the fabric is quickly and uniformly cooled and set to obtain the finished fabric.

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