Surface coating device for anti-static pure silk fabric and coating method thereof

Abstract

The application relates to the technical field of coating machines, and discloses a surface coating device for antistatic silk fabric and a coating method thereof, which is used for forming an antistatic coating layer on the surface of the fabric and comprises a coating mechanism, the coating mechanism comprising a pressure coating device arranged above the fabric, a suction device arranged below the fabric and a supporting device, the suction device being fixed on the supporting device at two ends perpendicular to the moving direction of the fabric, the suction device comprising a suction seat, a plurality of suction holes being arranged in an array on the upper surface of the suction seat, and air ducts being arranged in the suction seat at positions corresponding to each row of the suction holes, the fabric between the suction device and the pressure coating device being adsorbed on the upper surface of the suction seat by the suction holes and the penetration of the coating is accelerated by the suction force. The surface coating device for the antistatic silk fabric has the advantages of precisely controlling the distance between the pressure coating roller and the fabric and strengthening the penetration of the coating.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coating machines, in particular to a surface coating device for anti-static silk fabric and a coating method thereof. BACKGROUND

[0002] In the textile industry, silk fabric is favored by consumers for its softness, smoothness, and good air permeability. However, silk fabric is prone to static electricity, which affects the user experience, so it needs to be treated with anti-static. Currently, one common way to treat anti-static is to coat anti-static paint on the surface of silk fabric, such as quaternary ammonium salt anti-static paint and carbon-based anti-static paint.

[0003] The existing surface coating device for anti-static silk fabric has many problems. Firstly, the height control between the pressure roller and the fabric is not accurate enough during the coating process. If the height is too high, the coating will be uneven, and if the height is too low, it may damage the silk fabric. Secondly, when the fabric deviates or shakes during transmission, the coating position and thickness of the paint are difficult to keep consistent, which greatly affects the quality and stability of the anti-static coating. Thirdly, due to the limitations of coating technology and device, the penetration depth of anti-static paint on silk fabric is shallow, which makes the anti-static coating easy to fall off after multiple washes, resulting in rapid decline in the anti-static performance of the fabric, poor wash resistance, and short service life.

[0004] These problems seriously restrict the production quality and application of anti-static silk fabric, and a new surface coating device and coating method are needed to solve the above technical problems. SUMMARY

[0005] (I) Technical problems solved

[0006] To overcome the shortcomings of the prior art, the present application provides a surface coating device for anti-static silk fabric and a coating method thereof, which has the advantages of precise control of the distance between the pressure roller and the fabric and enhanced penetration of the paint, solving the problems of inaccurate height control between the pressure roller and the fabric, inconsistent coating position and thickness of the paint when the fabric deviates or shakes during transmission, and shallow penetration depth of anti-static paint on silk fabric.

[0007] (II) Technical solutions

[0008] To achieve the above-mentioned purposes, the present application provides the following technical solutions:

[0009] The application discloses a surface coating device for anti-static silk fabric, which is used for forming an anti-static coating layer on the surface of the fabric and comprises a coating mechanism, wherein the coating mechanism comprises a pressure coating device arranged above the fabric, an adsorption device arranged below the fabric and a supporting device; the adsorption device is fixed on the supporting device at two ends in the direction perpendicular to the moving direction of the fabric; the adsorption device comprises an adsorption seat, the upper surface of the adsorption seat is provided with a plurality of adsorption holes arranged in an array, and the inner side of the adsorption seat is provided with air ducts corresponding to each row of adsorption holes; the fabric between the adsorption device and the pressure coating device is adsorbed on the upper surface of the adsorption seat by the adsorption holes and the penetration of the coating is accelerated by the suction force.

[0010] The pressure coating device is lifted and slid on the supporting device at two ends in the direction perpendicular to the moving direction of the fabric; the pressure coating device comprises a coating material spraying channel and at least two pressure coating rollers; the average vertical distance between each pressure coating roller and the upper surface of the adsorption seat is changed during the lifting process; the vertical distance between each pressure coating roller and the upper surface of the adsorption seat gradually decreases along the advancing direction of the fabric, so that the coating thickness in the pressure coating process gradually decreases, the uneven coating thickness caused by the adsorption effect of the adsorption device is avoided, and the penetration force at the starting position is improved.

[0011] Preferably, a roller is rotatably arranged in each air duct at a position corresponding to each adsorption hole; the roller is rotatably connected to the inner wall of the air duct at two ends; the side of the roller close to the direction of the fabric is attached to the adsorption seat; a gap is formed between the side of the roller close to the direction of the fabric and the adsorption seat; the top of the roller is not lower than the upper surface of the adsorption seat; and a gap is formed between the bottom of the roller and the bottom plate in the air duct.

[0012] Air inlets and air outlets are arranged at two ends of the air duct along the moving direction of the fabric; the air outlet is connected to a suction device; when the suction device works, the airflow in the air duct flows in the direction opposite to the moving direction of the fabric; the airflow in the air duct and the airflow in the adsorption hole rotate the roller in one direction; the rotation of the roller drives the fabric to advance, so that the fabric cannot be adsorbed on the adsorption seat and cannot move.

[0013] Preferably, an inner plate is arranged below the adsorption seat; the inner plate is rotatably connected to the adsorption seat; the two ends of the inner plate are fixed on the supporting device; and the two ends of the adsorption seat are rotatably arranged on the supporting device; by controlling the rotation of the adsorption seat, the size of the air duct at two ends in the air duct is changed while the distance between the upper surface of the adsorption seat and each pressure coating roller is changed, so that the gradient change of the pressure coating thickness can be adjusted, the suction force and the pressure coating thickness can be matched, the pressure coating thickness gradually decreases along with the movement of the fabric, and the suction force gradually increases.

[0014] Preferably, the adsorption seat is provided with an inner air duct plate at the position corresponding to the side wall of each air duct, the roller is rotatably connected to the inner air duct plate, and the inner plate is provided with an outer air duct plate at the position corresponding to the side wall of each air duct. During rotation of the adsorption seat, the inner air duct plate is clamped in the outer air duct plate and slides in the outer air duct plate, so that the side wall of the air duct remains sealed with the outside during rotation.

[0015] Preferably, the adsorption seat is provided with an adsorption device support side plate at both ends close to the support device, the adsorption seat is fixed to the adsorption device support side plate, the inner plate is fixed with a plurality of inner plate rotating columns at positions away from the rotation axis of the adsorption seat, the adsorption device support side plate is provided with arc-shaped holes at positions corresponding to the inner plate rotating columns, each inner plate rotating column passes through and slides from the corresponding arc-shaped hole, and the adsorption device support side plate is provided with a rotating shaft at a position corresponding to the rotation axis of the adsorption seat. The rotating shaft is rotatably connected to the support device, and the inner plate rotating column is fixed to the support device.

[0016] Preferably, the roller is a hollow structure, and a plurality of fan blades are circumferentially arranged at both ends of the roller. The end of each fan blade away from the rotation axis is lower than the upper surface of the adsorption seat.

[0017] Preferably, the pressure coating device is provided with three pressure coating rollers, each pressure coating roller is rotatably arranged at both ends of two pressure coating device support side plates, the spraying duct is fixed at both ends of the pressure coating device support side plate, and the pressure coating device support side plate is arranged on one side of the pressure coating roller close to the cloth.

[0018] Preferably, the support device includes a back plate fixed to the support plates at both ends of the coating device, a bottom plate and a vertical plate fixed to the back plate, a lifting top cylinder, a guide rod and two symmetrical rotating top cylinders fixed to the bottom plate. The output shaft of the lifting top cylinder is fixedly connected to the pressure coating device support side plate, the other end of the guide rod passes through the pressure coating device support side plate, and the output shaft end of the rotating top cylinder is movably arranged in the long slot provided on the adsorption device support side plate. The two symmetrical rotating top cylinders push or pull the adsorption device support side plate in opposite directions to make the adsorption device support side plate rotate around the support device.

[0019] Preferably, the adsorption device support side plate is rotatably provided with front and rear support rollers at both ends along the cloth moving direction, and the roller surface of the support roller is tangent to the upper surface of the adsorption seat.

[0020] A surface coating method of an antistatic pure silk fabric, comprising the following steps:

[0021] S1, arranging a lifting pressure coating device and a fixed adsorption device on a fixed support device;

[0022] S2, controlling the lifting of the pressure coating device to adjust the distance between the pressure coating device and the adsorption device;

[0023] S3, using the suction force of the adsorption device to adsorb the cloth onto the adsorption device, at this time the distance between the pressure coating device and the adsorption device minus the thickness of the cloth is the coating thickness;

[0024] S4, using a plurality of pressure coating rollers with gradually decreasing heights on the pressure coating device to perform gradient pressure coating, and using the suction force on the adsorption device to improve the penetration of the coating into the fabric.

[0025] (3) Beneficial effects

[0026] Compared with the prior art, the present invention provides a surface coating device and coating method for antistatic silk fabrics, which have the following beneficial effects:

[0027] 1. The surface coating device and coating method of the antistatic silk fabric are designed to include a coating mechanism including a pressure coating device arranged above the fabric, an adsorption device below, and a supporting device, and the adsorption device is fixed at both ends perpendicular to the moving direction of the fabric, an adsorption seat on the upper side is provided with an array of adsorption holes, and an air duct is provided on the inner side, while the two ends of the pressure coating device rise and fall and slide on the supporting device, including a spray paint channel and a pressure coating roller; when the fabric passes between the adsorption device and the pressure coating device, the adsorption holes are adsorbed on the upper surface of the adsorption seat, thereby solving the problem of inaccurate control of the distance between the fabric and the pressure coating device, and also utilizing suction to accelerate the penetration of the coating, and changing the vertical distance from the pressure coating roller to the adsorption seat by lifting and lowering the pressure coating device, so that the coating thickness gradually decreases along the moving direction of the fabric, thereby avoiding uneven coating thickness due to the adsorption action of the adsorption device and ensuring coating uniformity, and at the same time improving the coating penetration at the starting position, so that the antistatic coating can better adhere to the silk fabric, thereby improving the antistatic performance of the fabric and product quality.

[0028] 2. By rotating and setting a roller at the position corresponding to each adsorption hole in each air duct of the adsorption device, the two ends of the roller are rotated to connect to the inner wall of the air duct. It is close to the cloth to fit the adsorption seat on one side, and a gap is set on the side to go to. The top is not higher than the upper surface of the adsorption seat, and there is a gap between the bottom and the bottom plate of the air duct. When the suction device is working, the airflow direction in the air duct is opposite to the movement direction of the cloth. The airflow in the air duct and the airflow in the adsorption hole drive the roller to rotate in one direction, thereby driving the cloth forward, effectively avoiding the problem of the cloth being adsorbed on the adsorption seat and unable to move, ensuring that the cloth can be transmitted continuously and stably during the coating process, improving the stability and production efficiency of the coating device, and avoiding the impact of cloth jamming on coating quality and production progress.

[0029] 3. By rotatingly connecting the adsorption seat and the lower inner plate, and fixing them on the support device respectively, and adjusting the distance between the adsorption seat and the pressure coating roller by rotating the adsorption seat, and adjusting the size of the air duct at both ends, the pressure coating thickness gradient can be flexibly adjusted during the movement of the cloth, the suction force and the pressure coating thickness are dynamically matched according to the requirements of different coating stages, the pressure coating thickness gradually decreases, and the suction force gradually increases accordingly, the effect of optimizing the matching degree of coating process parameters is achieved, the thickness and penetration effect of the antistatic coating are accurately controlled, problems such as too thick coating or insufficient penetration are avoided, the coating quality is further improved, the stability and reliability of the antistatic performance of the silk fabric are enhanced, and the diversified needs of different production scenes and product standards are met. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present application.

[0031] Figure 2 It is a sectional view of the present application.

[0032] Figure 3 It is a structural schematic diagram of the coating mechanism 3 of the present application.

[0033] Figure 4 It is a partial structural schematic diagram of the coating mechanism 3 of the present application after removing the back plate 331.

[0034] Figure 5 It is an exploded view of the coating mechanism 3 of the present application.

[0035] Figure 6 It is a structural schematic diagram of the support device 33 of the present application.

[0036] Figure 7 It is a structural schematic diagram of the pressure coating device 31 of the present application.

[0037] Figure 8 It is a structural schematic diagram of the adsorption device 32 of the present application.

[0038] Figure 9 It is a sectional view of the adsorption device 32 of the present application.

[0039] Figure 10 It is a structural schematic diagram of the adsorption device 32 of the present application after removing the inner plate 324.

[0040] Figure 11 It is a structural schematic diagram of the inner plate 324 of the present application from the oblique lower side.

[0041] Figure 12 It is a structural schematic diagram of the inner plate 324 of the present application from the oblique upper side.

[0042] Figure 13Structure diagram of the roller 326 of the present application.

[0043] In the figure: 1, material feeding roll; 2, material receiving roll; 3, coating mechanism; 4, drying device; 5, motor box; 9, cloth; 31, pressing coating device; 311, pressing coating roller; 312, paint spraying channel; 313, pressing coating device support side plate; 32, adsorption device; 321, adsorption seat; 3211, adsorption hole; 3212, inner air duct plate; 322, support roller; 323, adsorption device support side plate; 3231, arc-shaped hole; 3232, long strip hole; 324, inner plate; 3241, inner plate rotating column; 3242, air outlet; 3243, air inlet; 3244, outer air duct plate; 325, air suction device; 326, roller; 3261, fan blade; 33, support device; 331, back plate; 332, bottom plate; 333, vertical plate; 334, rotating top cylinder; 335, lifting top cylinder; 336, guide rod; 320, air duct. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0045] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0046] In addition, fixed connection refers to the connection after fixing the parts or components without any relative movement; transmission connection refers to a connection mode of transmitting mechanical movement or torque to other working components through a transmission member; sliding connection refers to a connection mode in which two objects are in contact but not fixed, and can slide relative to each other; and rotating connection refers to a connection mode in which two objects are in contact but not fixed, and can rotate relative to each other.

[0047] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0048] Embodiment one:

[0049] The embodiment provides a surface coating device for anti-static silk fabric and a coating method thereof, and has the following technical features.

[0050] Please refer to Figures 1-13 A surface coating device for anti-static silk fabric is used for forming an anti-static coating layer on the surface of fabric 9, and comprises a coating mechanism 3, the coating mechanism 3 comprising a pressure coating device 31 arranged above the fabric 9, a suction device 32 arranged below the fabric 9 and a supporting device 33, the suction device 32 being fixed on the supporting device 33 at two ends in a direction perpendicular to the moving direction of the fabric 9, the suction device 32 comprising a suction seat 321, a plurality of suction holes 3211 being arranged in an array on the upper surface of the suction seat 321, and air ducts 320 being arranged in the suction seat 321 at positions corresponding to each row of the suction holes 3211, the fabric 9 passing between the suction device 32 and the pressure coating device 31 being adsorbed on the upper surface of the suction seat 321 by the suction holes 3211 and the penetration of the coating being accelerated by suction force.

[0051] The pressure coating device 31 is lifted and slides on the supporting device 33 at two ends in the direction perpendicular to the moving direction of the fabric 9, the pressure coating device 31 comprising a coating nozzle 312 and three pressure coating rollers 311, the average vertical distance from each pressure coating roller 311 to the upper surface of the suction seat 321 being changed in the lifting process, and the vertical distance from each pressure coating roller 311 to the upper surface of the suction seat 321 gradually decreasing along the advancing direction of the fabric 9, so that the coating layer thickness gradually decreases in the pressure coating process, the uneven thickness of the coating layer caused by the adsorption of the suction device 32 is avoided, and the penetration force at the starting position is improved.

[0052] It should be noted that the material of the anti-static coating layer comprises quaternary ammonium salt anti-static coating and carbon anti-static coating.

[0053] It should be noted that, by setting the vertical distance from each pressure coating roller 311 on the pressure coating device 31 to the upper surface of the suction seat 321 to gradually decrease along the advancing direction of the fabric 9, and combining the adsorption function of the suction device 32, the following is achieved: in the pressure coating process, the coating at the starting position has strong penetration force due to the large vertical distance and adsorption force, as the fabric 9 advances, the vertical distance gradually decreases, the coating layer thickness gradually decreases, the uniformity of the overall coating layer thickness is ensured, the defect that the coating layer thickness is inconsistent caused by uneven adsorption force in the traditional coating method is overcome, the anti-static coating layer with uniformity and good penetration is formed on the surface of the anti-static silk fabric, the fabric quality and market competitiveness are improved, and the production demand of high-end fabric is met.

[0054] In an optional embodiment, a plurality of rollers 326 are arranged in each air duct 320 at positions corresponding to the respective adsorption holes 3211, the rollers 326 are rotatably connected at both ends to the inner wall of the air duct 320, the side of the roller 326 close to the direction of the cloth 9 is attached to the adsorption seat 321, a gap is arranged between the side of the roller 326 close to the direction of the cloth 9 and the adsorption seat 321, the top of the roller 326 is not lower than the upper surface of the adsorption seat 321, and a gap is arranged between the bottom of the roller 326 and the inner bottom plate of the air duct 320; the air duct 320 is provided with an air inlet 3243 and an air outlet 3242 at both ends along the moving direction of the cloth 9, the air outlet 3242 is communicated with the air suction device 325, when the air suction device 325 is working, the airflow direction in the air duct 320 is opposite to the moving direction of the cloth 9, the airflow in the air duct 320 and the airflow in the adsorption hole 3211 rotate the roller 326 in one direction, the roller 326 rotates to drive the cloth 9 to move forward, so that the cloth 9 cannot be adsorbed on the adsorption seat 321 and cannot move.

[0055] In an optional embodiment, an inner plate 324 is arranged below the adsorption seat 321, the inner plate 324 is rotatably connected with the adsorption seat 321, both ends of the inner plate 324 are fixed on the support device 33, both ends of the adsorption seat 321 are rotatably arranged on the support device 33, by controlling the rotation of the adsorption seat 321, the size of the air duct 320 at both ends is changed while the distance between the upper surface of the adsorption seat 321 and each pressing roller 311 is changed, so that the gradient change of the pressing thickness can be adjusted, the suction force and the pressing thickness can be matched, and as the cloth 9 moves, the pressing thickness gradually decreases and the suction force gradually increases.

[0056] In an optional embodiment, an inner air duct plate 3212 is arranged in the adsorption seat 321 at positions corresponding to the side walls of each air duct 320, the roller 326 is rotatably connected to the inner air duct plate 3212, and the inner plate 324 is provided with an outer air duct plate 3244 at positions corresponding to the side walls of each air duct 320; during the rotation of the adsorption seat 321, the inner air duct plate 3212 is clamped in the outer air duct plate 3244 and slides, so that the side walls of the air duct 320 can maintain sealing with the outside during rotation.

[0057] In an optional embodiment, the adsorption seat 321 is provided with an adsorption device support side plate 323 at both ends close to the support device 33, the adsorption seat 321 is fixed on the adsorption device support side plate 323, a plurality of inner plate rotating columns 3241 are fixed at both ends of the inner plate 324 away from the rotation axis of the adsorption seat 321, the adsorption device support side plate 323 is provided with an arc-shaped hole 3231 at a position corresponding to the inner plate rotating column 3241, each inner plate rotating column 3241 passes through and slides from the corresponding arc-shaped hole 3231, and the adsorption device support side plate 323 is provided with a rotating shaft at a position corresponding to the rotation axis of the adsorption seat 321, the rotating shaft is rotatably connected to the support device 33, and the inner plate rotating column 3241 is fixed on the support device 33.

[0058] In an alternative embodiment, the roller 326 is a hollow structure, and a plurality of vanes 3261 are arranged circumferentially at both ends of the roller 326, and the end of each vane 3261 away from the rotation axis is lower than the upper surface of the adsorption seat 321.

[0059] In an alternative embodiment, the pressure coating device 31 is provided with three pressure coating rollers 311, each of which is rotatably arranged at both ends of two pressure coating device support side plates 313, and the spray coating channel 312 is fixed at both ends of the pressure coating device support side plate 313, and the pressure coating device support side plate 313 is arranged on the side of the pressure coating roller 311 close to the cloth 9.

[0060] In an alternative embodiment, the support device 33 includes a back plate 331 fixed on the support plates at both ends of the coating device, and the back plate 331 is fixed with a bottom plate 332 and a vertical plate 333, and the bottom plate 332 is fixed with a lifting top cylinder 335, a guide rod 336 and two symmetrical rotating top cylinders 334, the output shaft of the lifting top cylinder 335 is fixedly connected to the pressure coating device support side plate 313, the other end of the guide rod 336 passes through the pressure coating device support side plate 313, and the output shaft end of the rotating top cylinder 334 is movably arranged in the long slot 3232 arranged on the adsorption device support side plate 323, and the adsorption device support side plate 323 is pushed or pulled in opposite directions by the two symmetrical rotating top cylinders 334, so that the adsorption device support side plate 323 rotates around the support device 33.

[0061] In an alternative embodiment, two support rollers 322 are rotatably arranged on the adsorption device support side plate 323 at both ends in the moving direction of the cloth 9, and the roller surface of the support roller 322 is tangent to the upper surface of the adsorption seat 321.

[0062] A surface coating method of an antistatic pure silk fabric, comprising the following steps:

[0063] S1, arranging a lifting pressure coating device 31 and a fixed adsorption device 32 on a fixed support device 33;

[0064] S2, controlling the lifting of the pressure coating device 31 to adjust the distance between the pressure coating device 31 and the adsorption device 32;

[0065] S3, using the suction force of the adsorption device 32 to adsorb the cloth 9 on the adsorption device 32, and the distance between the pressure coating device 31 and the adsorption device 32 minus the thickness of the cloth 9 is the thickness of the coating;

[0066] S4, using a plurality of pressure coating rollers 311 with gradually decreasing heights on the pressure coating device 31 to perform gradient pressure coating, and using the suction force of the adsorption device 32 to improve the penetration of the coating on the cloth 9.

[0067] In an alternative embodiment, the air suction device 325 is fixedly arranged at the bottom of the inner plate 324, and the air outlet 3242 and the air inlet 3243 are arranged through the inner plate 324, and the air suction device 325 is internally provided with a fan.

[0068] In an alternative embodiment, the starting end and the winding end of the cloth 9 are wound on the unwinding roll 1 and the winding roll 2 respectively, and the unwinding roll 1 and the winding roll 2 are rotatably arranged at both ends of the support plate, and the back plate 331 is also fixedly arranged on the support plate.

[0069] In an alternative embodiment, a plurality of rotating rollers are arranged on the support plate at positions corresponding to the cloth 9, for adjusting the tightness and position of the cloth 9.

[0070] In an alternative embodiment, one of the support plates is fixedly arranged on the motor box 5, and the motor box 5 is internally provided with a control assembly, a power supply assembly and a transmission assembly, the control assembly is used to control the input and output of the motors and cylinders in the unwinding roll 1, the winding roll 2 and the coating mechanism 3, the power supply assembly is used to provide power for the system, and the transmission assembly is used to drive the rotating rollers including the unwinding roll 1 and the winding roll 2 to rotate.

[0071] In an alternative embodiment, the support plate is further provided with a drying device 4, and the cloth 9 passes through the coating mechanism 3 and then passes through the drying device 4, and the drying device 4 is used to dry the coating on the cloth 9.

[0072] In an alternative embodiment, the pore diameter of the adsorption hole 3211 is 0.5-1.5 mm, the arrangement interval along the moving direction of the cloth 9 is 5-10 mm, and the arrangement row spacing perpendicular to the moving direction of the cloth 9 is 8-15 mm; the suction range of the air suction device 325 is 100-300 Pa, and the suction size is negatively correlated with the coating thickness of the pressure coating roller 311.

[0073] In an alternative embodiment, the roller surface material of the pressure coating roller 311 is silicone rubber or polyurethane, the surface hardness is Shore 50-70A, the roller surface is provided with a micron-level mesh structure, the mesh depth is 10-30 μm, and the mesh density is 20-40 lines / cm; the pressure coating roller 311 is internally provided with a temperature adjusting channel, and the roller surface temperature can be controlled at 30-60℃ by circulating water or heat conducting oil.

[0074] In an alternative embodiment, the drying device 4 includes an infrared heating plate and a hot air circulation cavity arranged symmetrically upward and downward, the heating temperature of the infrared heating plate is 60-120℃, the hot air flow rate in the hot air circulation cavity is 5-15 m / s, and the temperature is 80-150℃; the drying device 4 is internally provided with a temperature sensor and an air speed sensor, which are electrically connected with the control assembly in the motor box 5, to realize closed-loop control of the drying parameters.

[0075] In an optional embodiment, the rotating rollers arranged on the support plate include a tension adjusting roller and a deviation correcting roller. The tension adjusting roller is driven by a servo motor, and can adjust the tension of the cloth 9 in a range of 5-20 N in real time. The deviation correcting roller is used in cooperation with a photoelectric sensor. When the deviation of the cloth exceeds 5 mm, the control assembly automatically adjusts the angle of the deviation correcting roller to correct the position of the cloth.

[0076] In an optional embodiment, the paint spraying channel 312 is connected to a paint supply system, which includes a paint tank, a metering pump, and a filter. The flow control accuracy of the metering pump is ±0.5 mL / min. A paint recovery tank is arranged below the adsorption seat 321, and is connected to the paint tank through a pipeline to form a paint recycling circuit. The paint spraying channel 312 includes a paint conveying pipeline, a nozzle assembly, a paint flow adjusting device, and a cleaning device. The paint conveying pipeline is made of corrosion-resistant stainless steel and has a smooth inner wall. The inner diameter of the pipeline is designed according to the paint flow and pressure requirements. A heat preservation layer is arranged on the pipeline to prevent the paint viscosity from being affected by temperature changes. A filter is installed at the inlet of the pipeline to filter impurities in the paint and ensure the purity of the paint. The nozzle assembly adopts a multi-row nozzle array. The type of the nozzle is a pressure type atomizing nozzle or an air-assisted atomizing nozzle. The nozzle spacing and angle are optimized according to the distribution of the pressure coating roller 311 and the width of the cloth to ensure uniform coverage of the paint on the cloth surface. The nozzle material is selected from wear-resistant and corrosion-resistant ceramic or alloy materials to improve the service life of the nozzle. The paint flow adjusting device is a combination of a high-precision metering pump and a flow control valve. The metering pump accurately controls the delivery flow of the paint, and the flow control valve adjusts the paint flow in real time according to the instructions of the central controller. A flow sensor is installed on the paint spraying channel 312 to monitor the paint flow in real time and feed back to the central controller, realizing closed-loop control of the paint flow. The cleaning device is provided with a cleaning liquid inlet and a sewage outlet on the paint spraying channel 312, and is equipped with an automatic cleaning system. During cleaning, the cleaning liquid is injected into the paint spraying channel 312 through a switching valve, and high-pressure gas is used for blowing to remove the residual paint in the pipeline and the nozzle. The cleaning liquid is a special paint thinner or cleaning agent to ensure cleaning effect and not damage the equipment.

[0077] Working principle: when the surface coating device of the antistatic silk fabric is working, the fabric 9 is conveyed from the feeding roll 1 to the coating mechanism 3 through the rotating roller, the suction device 32 generates suction force through the array of suction holes 3211 on the suction seat 321, the fabric 9 is fixed on the suction seat 321 and the penetration of the coating is accelerated, at the same time, the airflow in the air duct 320 drives the roller 326 to rotate to prevent the fabric 9 from being stuck; the spraying channel 312 of the pressure coating device 31 sprays quaternary ammonium salt or carbon-based antistatic coating, the three pressure coating rollers 311 gradually decrease in vertical distance along the advancing direction of the fabric 9, forming a gradient decreasing effect of coating thickness, avoiding uneven thickness caused by suction force and enhancing the initial penetration force; the suction seat 321 can drive the suction device support side plate 323 to rotate around the rotating shaft through the rotating top cylinder 334, and the distance between the pressure coating roller 311 and the air duct 320 is changed, realizing the adaptation of "decreasing pressure coating thickness + increasing suction force"; the coated fabric 9 is dried through the infrared heating plate and the hot air circulation cavity of the drying device 4, and the whole system realizes closed-loop adjustment of coating flow, drying parameters and the like through the control components in the motor box 5, ensuring that the antistatic coating is uniformly attached and fully penetrated.

[0078] In summary, the surface coating device of the antistatic silk fabric and the coating method thereof, by designing the coating mechanism 3 to include the pressure coating device 31 arranged above the fabric 9, the suction device 32 arranged below and the support device 33, and fixing the suction device 32 at both ends perpendicular to the moving direction of the fabric 9, arranging the array of suction holes 3211 on the suction seat 321 and the air duct 320 on the inner side, and sliding the pressure coating device 31 at both ends on the support device 33, including the spraying channel 312 and the pressure coating roller 311; the fabric 9 is adsorbed on the surface of the suction seat 321 by the suction holes 3211 when passing between the suction device 32 and the pressure coating device 31, solving the problem of inaccurate distance control between the fabric 9 and the pressure coating device 31, and accelerating the penetration of the coating by suction force, and changing the vertical distance between the pressure coating roller 311 and the suction seat 321 by lifting the pressure coating device 31, so that the coating thickness gradually decreases along the advancing direction of the fabric 9, avoiding uneven coating thickness caused by the suction effect of the suction device 32, ensuring the uniformity of the coating, improving the penetration force of the coating at the starting position, and making the antistatic coating better adhere to the silk fabric, improving the antistatic performance of the fabric and the quality of the product.

[0079] By rotating the roller 326 in the position corresponding to each adsorption hole 3211 in each air duct 320 of the adsorption device 32, the roller 326 is rotatably connected to the inner wall of the air duct 320, which is close to the cloth 9 to one side to fit the adsorption seat 321, to the other side to set a gap, the top is not higher than the upper surface of the adsorption seat 321, and the bottom has a gap with the inner bottom plate of the air duct 320. When the air suction device 325 is working, the airflow direction in the air duct 320 is opposite to the moving direction of the cloth 9, and the airflow in the air duct 320 and the airflow in the adsorption hole 3211 drive the roller 326 to rotate in one direction, thereby driving the cloth 9 to move forward, effectively avoiding the problem that the cloth 9 is adsorbed on the adsorption seat 321 and cannot move, ensuring that the cloth 9 can be continuously and stably transmitted during the coating process, improving the stability and production efficiency of the coating device operation, and avoiding the influence of cloth jamming on coating quality and production progress.

[0080] By rotatably connecting the adsorption seat 321 and the lower inner plate 324, and fixing them on the support device 33 respectively, and adjusting the distance between the adsorption seat 321 and the pressure coating roller 311 and the size of the air duct 320 at both ends by using the rotation of the adsorption seat 321, the pressure coating thickness gradient can be flexibly adjusted during the movement of the cloth 9, the suction force and the pressure coating thickness are dynamically matched according to the needs of different coating stages, the pressure coating thickness gradually decreases, and the suction force gradually increases accordingly, achieving the effect of optimizing the matching degree of coating process parameters, accurately controlling the thickness and penetration effect of the antistatic coating, avoiding problems such as too thick coating or insufficient penetration, further improving the coating quality, enhancing the stability and reliability of the antistatic performance of silk fabric, and meeting the diversified needs of different production scenes and product standards.

[0081] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or equipment including the element.

[0082] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface coating device for anti-static silk fabric, for forming an anti-static coating layer on the surface of the fabric (9), characterized in that, The coating mechanism (3) comprises a pressure coating device (31) arranged above the cloth (9), a suction device (32) arranged below the cloth (9), and a supporting device (33); the suction device (32) is fixed at both ends in the direction perpendicular to the moving direction of the cloth (9) on the supporting device (33), the suction device (32) comprises a suction seat (321), the upper surface of the suction seat (321) is provided with a plurality of suction holes (3211) arranged in an array, the inner side of the suction seat (321) is provided with an air duct (320) at a position corresponding to each row of suction holes (3211), the cloth (9) between the suction device (32) and the pressure coating device (31) is adsorbed on the upper surface of the suction seat (321) by the suction holes (3211); The pressure coating device (31) is lifted and slides at both ends in the direction perpendicular to the moving direction of the cloth (9) on the supporting device (33), the pressure coating device (31) comprises a paint spraying channel (312) and at least two pressure coating rollers (311), the average vertical distance between each pressure coating roller (311) and the upper surface of the suction seat (321) is changed during the lifting process, the vertical distance between each pressure coating roller (311) and the upper surface of the suction seat (321) gradually decreases in the advancing direction of the cloth (9), so that the coating thickness gradually decreases during the pressure coating process, and the uneven coating thickness caused by the adsorption of the suction device (32) is avoided; The suction seat (321) is provided below with an inner plate (324), the inner plate (324) is rotationally connected with the suction seat (321), and the two ends of the inner plate (324) are fixed on the supporting device (33); the two ends of the suction seat (321) are rotationally arranged on the supporting device (33), by controlling the rotation of the suction seat (321), the size of the air duct (320) at both ends is changed while the distance between the upper surface of the suction seat (321) and each pressure coating roller (311) is changed.

2. The surface coating device for anti-static pure silk fabric according to claim 1, characterized in that, Each air duct (320) is rotationally provided with a roller (326) at a position corresponding to each suction hole (3211), the two ends of the roller (326) are rotationally connected to the inner wall of the air duct (320), one side of the roller (326) close to the cloth (9) is attached to the suction seat (321), a gap is provided between the other side of the roller (326) away from the cloth (9) and the suction seat (321), the top of the roller (326) is not lower than the upper surface of the suction seat (321), and a gap is provided between the bottom of the roller (326) and the bottom plate in the air duct (320); The two ends of the air duct (320) are respectively provided with an air inlet (3243) and an air outlet (3242) along the moving direction of the cloth (9), the air outlet (3242) is communicated with the air suction device (325), when the air suction device (325) works, the airflow direction in the air duct (320) is opposite to the moving direction of the cloth (9), the airflow in the air duct (320) and the airflow in the adsorption hole (3211) both rotate the roller (326) in one direction, the roller (326) rotation drives the cloth (9) to advance, avoiding that the cloth (9) is adsorbed on the adsorption seat (321) and cannot move.

3. The surface coating device for anti-static pure silk fabric according to claim 2, characterized in that, The inner air duct plate (3212) is arranged in the adsorption seat (321) at the position of the side wall corresponding to each air duct (320), the roller (326) is rotatably connected to the inner air duct plate (3212), the outer air duct plate (3244) is arranged on the inner plate (324) at the position of the side wall corresponding to each air duct (320), when the adsorption seat (321) rotates, the inner air duct plate (3212) is clamped in the outer air duct plate (3244) and slides to ensure that the side wall of the air duct (320) is sealed with the outside during rotation.

4. The surface coating device for anti-static pure silk fabric according to claim 2, wherein, The adsorption device support side plate (323) is arranged on the two ends of the adsorption seat (321) close to the support device (33), the adsorption seat (321) is fixed on the adsorption device support side plate (323), the inner plate (324) is fixed with a plurality of inner plate rotating columns (3241) at positions away from the rotation shaft of the adsorption seat (321) on both ends, the adsorption device support side plate (323) is provided with an arc-shaped hole (3231) corresponding to the position of the inner plate rotating column (3241), each inner plate rotating column (3241) passes through and slides from the corresponding arc-shaped hole (3231), the adsorption device support side plate (323) is provided with a rotating shaft corresponding to the position of the rotation shaft of the adsorption seat (321), the rotating shaft is rotatably connected to the support device (33), and the inner plate rotating column (3241) is fixed on the support device (33).

5. The surface coating device for anti-static pure silk fabric according to claim 2, wherein, The roller (326) is a hollow structure, a plurality of fan leaves (3261) are arranged on the circumferences of the two ends of the roller (326), and the end of each fan leaf (3261) away from the rotation shaft is lower than the upper surface of the adsorption seat (321).

6. The surface coating device for anti-static pure silk fabric according to claim 4, wherein, The pressure coating device (31) is provided with three pressure coating rollers (311), each pressure coating roller (311) is rotatably arranged on the two pressure coating device support side plates (313) on both ends, the spraying material channel (312) is fixed on the pressure coating device support side plate (313) on both ends, and the pressure coating device support side plate (313) is arranged on one side of the pressure coating roller (311) close to the cloth (9).

7. The surface coating device for anti-static pure silk fabric according to claim 6, wherein, The support device (33) comprises a back plate (331) fixed on the support plates at both ends of the coating device, a bottom plate (332) and a vertical plate (333) fixed on the back plate (331), a lifting top cylinder (335), a guide rod (336) and two symmetrical rotating top cylinders (334) fixed on the bottom plate (332), the output shaft of the lifting top cylinder (335) is fixedly connected on the pressure coating device support side plate (313), the other end of the guide rod (336) penetrates through the pressure coating device support side plate (313), and the output shaft end of the rotating top cylinder (334) is movably arranged in the long slot (3232) arranged on the adsorption device support side plate (323). The adsorption device support side plate (323) is pushed or pulled in opposite directions by the two symmetrical rotating top cylinders (334), so that the adsorption device support side plate (323) rotates around the support device (33).

8. The surface coating device for anti-static pure silk fabric according to claim 4, wherein, Two front and rear support rollers (322) are rotatably arranged on the adsorption device support side plate (323) at both ends in the moving direction of the cloth (9), and the roller surface of the support roller (322) is tangent to the upper surface of the adsorption seat (321).

9. A surface coating method of an antistatic pure silk fabric, characterized by, The surface coating device for the antistatic pure silk fabric according to any one of claims 1-8 comprises the following method: S1, arranging a lifting pressure coating device (31) and a fixed adsorption device (32) on the fixed support device (33); S2, controlling the lifting of the pressure coating device (31) to adjust the distance between the pressure coating device (31) and the adsorption device (32); S3, adsorbing the cloth (9) on the adsorption device (32) by the suction force of the adsorption device (32), and the distance between the pressure coating device (31) and the adsorption device (32) minus the thickness of the cloth (9) is the coating thickness; S4, performing gradient pressure coating by using the plurality of pressure coating rollers (311) with gradually decreasing heights on the pressure coating device (31), and improving the penetration of the coating on the cloth (9) by using the suction force of the adsorption device (32).

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