Surface coating device for antistatic real silk fabric and coating method thereof

Abstract

The invention relates to the technical field of coating machines, and discloses an antistatic silk fabric surface coating device and a coating method thereof.The antistatic silk fabric surface coating device is used for forming an antistatic coating on the surface of cloth and comprises a coating mechanism, and the coating mechanism comprises a press coating device arranged above the cloth, an adsorption device arranged below the cloth and a supporting device; the two ends, perpendicular to the cloth moving direction, of the adsorption device are fixed to the supporting device, the adsorption device comprises an adsorption base, a plurality of adsorption holes distributed in an array mode are formed in the upper surface of the adsorption base, and air channels are formed in the positions, corresponding to each row of adsorption holes, of the inner side of the adsorption base. Cloth passing through the space between the adsorption device and the press coating device is adsorbed to the upper surface of the adsorption base through the adsorption holes, and permeation of paint is accelerated through suction force. The surface coating device for the antistatic real silk fabric has the advantages that the distance between the press coating roller and the fabric is accurately controlled, and the coating permeation effect is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of coating machines, in particular to a surface coating device for antistatic silk fabrics and a coating method thereof. Background Art

[0002] In the textile industry, silk fabrics are popular among consumers for their softness, smoothness, and excellent breathability. However, silk fabrics are prone to static electricity, which affects the user experience, so they need to be treated with antistatic agents. Currently, a common antistatic treatment method is to apply antistatic coatings to the surface of silk fabrics, such as quaternary ammonium salt antistatic coatings and carbon-based antistatic coatings.

[0003] Existing antistatic silk fabric surface coating devices suffer from numerous problems. First, during the coating process, the height between the nip roller and the fabric is not precisely controlled. Too high a height can lead to uneven coating, while too low a height can damage the silk fabric. Second, when the fabric shifts or vibrates during transport, the coating's coating position and thickness cannot be maintained consistently, significantly impacting the quality and stability of the antistatic coating. Third, due to limitations in the coating process and device, the antistatic coating has a shallow penetration depth into the silk fabric, making it susceptible to shedding after repeated washings. This leads to a rapid decline in the fabric's antistatic properties, poor washing resistance, and a reduced service life.

[0004] These problems seriously restrict the production quality and application promotion of antistatic silk fabrics, and a new surface coating device and coating method are urgently needed to solve the above technical difficulties. Summary of the Invention

[0005] (1) Technical problems solved In response to the shortcomings of the existing technology, the present invention provides a surface coating device and a coating method for anti-static silk fabrics, which have the advantages of accurately controlling the distance between the pressure roller and the fabric and enhancing the penetration of the coating. It solves the problems in the existing technology of insufficiently accurate height control between the pressure roller and the fabric, difficulty in maintaining consistent coating position and thickness when the fabric deviates or shakes during transmission, and shallow penetration depth of the anti-static coating into the silk fabric.

[0006] (2) Technical solution To achieve the above object, the present invention provides the following technical solutions: A surface coating device for antistatic silk fabric, used to form an antistatic coating on the surface of the fabric, comprising a coating mechanism, the coating mechanism comprising a pressure coating device disposed above the fabric, a suction device disposed below the fabric, and a support device, the suction device being fixed to the support device at both ends perpendicular to the direction of fabric movement, the suction device comprising a suction seat, the upper surface of the suction seat being provided with a plurality of suction holes distributed in an array, the inner side of the suction seat being provided with air ducts at positions corresponding to each row of suction holes, the fabric passing between the suction device and the pressure coating device being adsorbed onto the upper surface of the suction seat by the suction holes, and the suction force being utilized to accelerate the penetration of the coating; The pressure coating device is lifted and slid on the supporting device at both ends perpendicular to the moving direction of the cloth. The pressure coating device includes a spray paint channel and at least two pressure coating rollers. The pressure coating device changes the average vertical distance from each pressure coating roller to the upper surface of the adsorption seat during the lifting process. The vertical distance between each pressure coating roller and the upper surface of the adsorption seat gradually decreases along the forward direction of the cloth, so that the coating thickness gradually decreases during the pressure coating process, avoiding uneven coating thickness caused by the adsorption effect of the adsorption device, and at the same time improving the penetration force at the starting position.

[0007] Preferably, a roller is rotatably provided in each air duct at a position corresponding to each adsorption hole, and both ends of the roller are rotatably connected to the inner wall of the air duct, and the side of the roller close to the direction in which the cloth comes is attached to the adsorption seat, and a gap is provided between the side of the roller close to the direction in which the cloth goes and the adsorption seat, the top of the roller is not lower than the upper surface of the adsorption seat, and a gap is provided between the bottom of the roller and the bottom plate of the air duct; An air inlet and an air outlet are respectively provided at both ends of the air duct along the moving direction of the cloth, and the air outlet is connected to the air suction device. When the air suction device is working, the air flow direction in the air duct is opposite to the moving direction of the cloth. The air flow in the air duct and the air flow in the adsorption hole will rotate the roller in one direction. The rotation of the roller drives the cloth forward, thereby preventing the cloth from being adsorbed on the adsorption seat and unable to move.

[0008] Preferably, an inner plate is provided under the adsorption seat, the inner plate is rotatably connected to the adsorption seat, both ends of the inner plate are fixed on the supporting device, and both ends of the adsorption seat are rotatably provided on the supporting device. By controlling the rotation of the adsorption seat, while changing the distance between the upper surface of the adsorption seat and each coating roller, the size of the air duct at both ends of the air duct is also changed, which is convenient for adjusting the gradient change of the coating thickness, and can also adapt the suction force and the coating thickness. As the cloth moves, the coating thickness gradually decreases and the suction force gradually increases.

[0009] Preferably, an inner air duct plate is provided in the adsorption seat at the side wall position corresponding to 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 side wall position corresponding to each air duct. When the adsorption seat rotates, the inner air duct plate is stuck in the outer air duct plate and slides, ensuring that the side wall of the air duct remains sealed from the outside during rotation.

[0010] Preferably, the adsorption seat is provided with adsorption device supporting side plates at both ends close to the supporting device, the adsorption seat is fixed on the adsorption device supporting side plates, and a plurality of inner plate rotating columns are fixed at both ends of the inner plate at positions away from the adsorption seat rotating axis, and arc-shaped holes are provided on the adsorption device supporting side plates at positions corresponding to the inner plate rotating columns, and each inner plate rotating column passes through and slides in the corresponding arc-shaped hole, and a rotating shaft is provided on the adsorption device supporting side plates at positions corresponding to the adsorption seat rotating axis, the rotating shaft is rotatably connected to the supporting device, and the inner plate rotating column is fixed on the supporting device.

[0011] Preferably, the roller is a hollow structure, and a plurality of blades are provided on the circumference of both ends of the roller, and the end of each blade away from the rotating shaft is lower than the upper surface of the adsorption seat.

[0012] Preferably, the coating device is provided with three coating rollers, and the two ends of each coating roller are rotatably set on two coating device support side plates, and the two ends of the spray paint channel are fixed on the coating device support side plates, and the coating device support side plates are set on the side of the coating roller close to the direction of the cloth.

[0013] Preferably, the supporting device includes a back plate, which is fixed to the supporting plates at both ends of the coating device, and a bottom plate and a vertical plate are fixed to the back plate, and a lifting top cylinder, a guide rod and two symmetrical rotating top cylinders are fixed to the bottom plate, and the output shaft of the lifting top cylinder is fixedly connected to the supporting side plate of the pressure coating device, and the other end of the guide rod passes through the supporting side plate of the pressure coating device, and the output shaft end of the rotating top cylinder is movably arranged in a long strip hole provided on the supporting side plate of the adsorption device, and the supporting side plate of the adsorption device is pushed or pulled in opposite directions by two symmetrical rotating top cylinders, so that the supporting side plate of the adsorption device rotates around the supporting device.

[0014] Preferably, two front and rear support rollers are rotatably provided on the support side plates of the adsorption device at both ends along the moving direction of the cloth, and the roller surfaces of the support rollers are tangent to the upper surface of the adsorption seat.

[0015] A surface coating method for antistatic silk fabric, using the surface coating device for antistatic silk fabric according to any one of claims 1 to 9, comprising the following steps: S1, a lifting pressure coating device and a fixed adsorption device are set on a fixed support device; S2, controls the lifting and lowering of the pressure coating device and adjusts the distance between the pressure coating device and the adsorption device; 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; 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.

[0016] (3) Beneficial effects 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: 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.

[0017] 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.

[0018] 3. By rotating the adsorption seat and the lower inner plate, and fixing the two to the supporting device respectively, and using the rotation of the adsorption seat to adjust the distance between it and the pressure coating roller and the size of the two ends of the air duct, it is realized that during the movement of the fabric, the pressure coating thickness gradient can be flexibly adjusted. According to the needs of different coating stages, the suction force and the pressure coating thickness are dynamically matched, so that the pressure coating thickness gradually decreases while 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 excessive coating or insufficient penetration, further improving the coating quality, enhancing the stability and reliability of the antistatic performance of silk fabrics, and meeting the diverse needs of different production scenarios and product standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a sectional perspective view of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the coating mechanism 3 of the present invention.

[0022] Figure 4 This is a schematic diagram of the partial structure of the coating mechanism 3 of the present invention after removing the back plate 331.

[0023] Figure 5 It is an exploded view of the coating mechanism 3 of the present invention.

[0024] Figure 6 Schematic diagram of the structure of the support device 33 of the present invention.

[0025] Figure 7 Schematic diagram of the structure of the pressure coating device 31 of the present invention.

[0026] Figure 8 Schematic diagram of the structure of the adsorption device 32 of the present invention.

[0027] Figure 9 It is a cross-sectional plan view of the adsorption device 32 of the present invention.

[0028] Figure 10 This is a schematic structural diagram from an oblique downward perspective of the adsorption device 32 of the present invention after the inner plate 324 is removed.

[0029] Figure 11 It is a structural schematic diagram of the inner plate 324 of the present invention from an oblique downward perspective.

[0030] Figure 12 It is a structural schematic diagram of the inner plate 324 of the present invention from an oblique upper perspective.

[0031] Figure 13Schematic diagram of the structure of the roller 326 of the present invention.

[0032] In the figure: 1. Unwinding reel; 2. Rewinding reel; 3. Coating mechanism; 4. Drying device; 5. Motor box; 9. Cloth; 31. Pressing coating device; 311. Pressing coating roller; 312. Spraying material channel; 313. Supporting side plate of pressing coating device; 32. Adsorption device; 321. Adsorption seat; 3211. Adsorption hole; 3212. Inner air duct plate; 322. Support roller; 323. Supporting side plate of adsorption device; 3231. Arc Hole; 3232, long 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, supporting 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

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0035] In addition, a fixed connection refers to a connection in which parts or components are fixed without any relative movement; a transmission connection refers to a connection method in which mechanical motion or torque is transmitted to other working parts through a transmission part; a sliding connection refers to a connection method in which two objects are in contact but not fixed and can slide relative to each other; a rotating connection refers to a connection method in which two objects are in contact but not fixed and can rotate relative to each other.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features being referred to. Thus, features specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined. Example

[0037] This embodiment provides a surface coating device and coating method for antistatic silk fabrics, which have the following technical features.

[0038] See also Figure 1-13 , a surface coating device for antistatic silk fabric, used for forming an antistatic coating on the surface of the fabric 9, including a coating mechanism 3, the coating mechanism 3 including a pressure coating device 31 arranged above the fabric 9, an adsorption device 32 arranged below the fabric 9, and a support device 33, the adsorption device 32 is fixed to the support device 33 at both ends perpendicular to the moving direction of the fabric 9, the adsorption device 32 includes an adsorption seat 321, the upper surface of the adsorption seat 321 is provided with a plurality of adsorption holes 3211 distributed in an array, the inner side of the adsorption seat 321 is provided with an air duct 320 at a position corresponding to each row of adsorption holes 3211, the fabric 9 passing between the adsorption device 32 and the pressure coating device 31 is adsorbed on the upper surface of the adsorption seat 321 by the adsorption holes 3211, and the suction force is used to accelerate the penetration of the coating; The pressure coating device 31 is lifted and slid on the supporting device 33 at both ends perpendicular to the moving direction of the cloth 9. The pressure coating device 31 includes a spray paint channel 312 and three pressure coating rollers 311. The pressure coating device 31 changes the average vertical distance from each pressure coating roller 311 to the upper surface of the adsorption seat 321 during the lifting process. The vertical distance between each pressure coating roller 311 and the upper surface of the adsorption seat 321 gradually decreases along the forward direction of the cloth 9, so that the coating thickness during the pressure coating process gradually decreases, avoiding uneven coating thickness caused by the adsorption effect of the adsorption device 32, and at the same time improving the penetration force at the starting position.

[0039] It should be noted that the materials of the antistatic coating include quaternary ammonium salt antistatic coatings and carbon-based antistatic coatings.

[0040] It should be noted that, by setting the vertical distance between each pressure coating roller 311 on the pressure coating device 31 and the upper surface of the adsorption seat 321 to gradually decrease along the forward direction of the cloth 9, combined with the adsorption function of the adsorption device 32; it is achieved that during the pressure coating process, the paint at the starting position obtains stronger penetration due to the larger vertical distance and adsorption force, and as the cloth 9 moves forward, the vertical distance gradually decreases, so that the coating thickness gradually decreases, ensuring that the overall coating thickness is uniform, and overcoming the defect of inconsistent coating thickness due to uneven adsorption force in traditional coating methods, so that a uniform and well-penetrated anti-static coating is formed on the surface of the anti-static silk fabric, thereby improving the quality and market competitiveness of the fabric and meeting the production needs of high-end fabrics.

[0041] In an optional embodiment, a roller 326 is rotatably provided in each air duct 320 at a position corresponding to each adsorption hole 3211, and both ends of the roller 326 are rotatably connected to the inner wall of the air duct 320, and the side of the roller 326 close to the direction of the cloth 9 is attached to the adsorption seat 321, and a gap is set between the side of the roller 326 close to the direction of the cloth 9 and the adsorption seat 321, and the top of the roller 326 is not lower than the upper surface of the adsorption seat 321, and the bottom of the roller 326 is not lower than the bottom plate of the air duct 320. an air inlet 3243 and an air outlet 3242 are respectively provided at both ends of the air duct 320 along the moving direction of the cloth 9, and the air outlet 3242 is connected to the suction device 325. When the suction device 325 is working, the air flow in the air duct 320 is opposite to the moving direction of the cloth 9. The air flow in the air duct 320 and the air flow in the adsorption hole 3211 rotate the roller 326 in one direction, and the rotation of the roller 326 drives the cloth 9 to move forward, thereby preventing the cloth 9 from being adsorbed on the adsorption seat 321 and unable to move.

[0042] In an optional embodiment, an inner plate 324 is provided below the adsorption seat 321, and the inner plate 324 is rotatably connected to the adsorption seat 321. Both ends of the inner plate 324 are fixed on the supporting device 33, and both ends of the adsorption seat 321 are rotatably provided on the supporting device 33. By controlling the rotation of the adsorption seat 321, while changing the distance between the upper surface of the adsorption seat 321 and each coating roller 311, the size of the air ducts at both ends of the air duct 320 is also changed, which is convenient for adjusting the gradient change of the coating thickness, and can also adapt the suction force and the coating thickness. As the cloth 9 moves, the coating thickness gradually decreases and the suction force gradually increases.

[0043] In an optional embodiment, an inner air duct plate 3212 is provided in the adsorption seat 321 at the side wall position corresponding to 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 the side wall position corresponding to each air duct 320. When the adsorption seat 321 rotates, the inner air duct plate 3212 is stuck in the outer air duct plate 3244 and slides, ensuring that the side wall of the air duct 320 remains sealed from the outside during rotation.

[0044] In an optional embodiment, the adsorption seat 321 is provided with an adsorption device supporting side plate 323 at both ends close to the supporting device 33, the adsorption seat 321 is fixed on the adsorption device supporting side plate 323, and multiple inner plate rotating columns 3241 are fixed at both ends of the inner plate 324 at positions away from the rotation axis of the adsorption seat 321, and arc-shaped holes 3231 are provided on the adsorption device supporting side plate 323 at positions corresponding to the inner plate rotating columns 3241, and each inner plate rotating column 3241 passes through and slides in the corresponding arc-shaped hole 3231, and a rotating shaft is provided on the adsorption device supporting side plate 323 at a position corresponding to the rotation axis of the adsorption seat 321, the rotating shaft is rotatably connected to the supporting device 33, and the inner plate rotating column 3241 is fixed on the supporting device 33.

[0045] In an optional embodiment, the roller 326 is a hollow structure, and a plurality of blades 3261 are provided on the circumference of both ends of the roller 326 , and the end of each blade 3261 away from the rotating shaft is lower than the upper surface of the adsorption seat 321 .

[0046] In an optional embodiment, three coating rollers 311 are provided on the coating device 31, and both ends of each coating roller 311 are rotatably set on two coating device support side plates 313, and both ends of the spray paint channel 312 are fixed on the coating device support side plates 313, and the coating device support side plates 313 are set on the side of the coating roller 311 close to the direction of the cloth 9.

[0047] In an optional embodiment, the supporting device 33 includes a back plate 331, which is fixed to the supporting plates at both ends of the coating device, and a bottom plate 332 and a vertical plate 333 are fixed on the back plate 331, and a lifting top cylinder 335, a guide rod 336 and two symmetrical rotating top cylinders 334 are fixed on the bottom plate 332. The output shaft of the lifting top cylinder 335 is fixedly connected to the pressure coating device support side plate 313, and the other end of the guide rod 336 passes through the pressure coating device support side plate 313. The output shaft end of the rotating top cylinder 334 is movably arranged in a long strip hole 3232 provided on the adsorption device support side plate 323, and the adsorption device support side plate 323 is pushed or pulled in opposite directions by two symmetrical rotating top cylinders 334, so that the adsorption device support side plate 323 rotates around the supporting device 33.

[0048] In an optional embodiment, two front and rear support rollers 322 are rotatably provided on the adsorption device support side plate 323 at both ends along 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 .

[0049] A surface coating method for antistatic silk fabric, using the surface coating device for antistatic silk fabric according to any one of claims 1 to 9, comprising the following steps: S1, a lifting pressure coating device 31 and a fixed adsorption device 32 are set on a fixed support device 33; S2, controlling the lifting and lowering of the pressure coating device 31, and adjusting the distance between the pressure coating device 31 and the adsorption device 32; S3, using the suction force of the adsorption device 32 to adsorb the cloth 9 onto the adsorption device 32. At this time, 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, 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 increase the penetration of the coating into the cloth 9.

[0050] In an optional embodiment, the air suction device 325 is fixedly arranged at the bottom of the inner plate 324 , the air outlet 3242 and the air inlet 3243 both pass through the inner plate 324 up and down, and a fan is arranged in the air suction device 325 .

[0051] In an optional embodiment, the starting end and the winding end of the cloth 9 are respectively wound on the unwinding reel 1 and the winding reel 2, and both ends of the unwinding reel 1 and the winding reel 2 are rotatably set on two support plates, and the back plate 331 is also fixed on the support plate.

[0052] In an optional embodiment, a plurality of rotating rollers are further provided on the support plate at positions corresponding to the cloth 9 , for adjusting the tightness and position of the cloth 9 .

[0053] In an optional embodiment, one of the support plates is fixed on the motor box 5, and the motor box 5 is provided with a control component, a power supply component and a transmission component. The control component is used to control the input and output of each motor and cylinder in the unwinding roll 1, the winding roll 2 and the coating mechanism 3. The power supply component is used to provide power to the system. The transmission component is used to drive each rotating roller that needs to be actively rotated, including the unwinding roll 1 and the winding roll 2, to rotate.

[0054] In an optional embodiment, a drying device 4 is further provided on the support plate. The cloth 9 first passes through the coating mechanism 3 and then passes through the drying device 4 . The drying device 4 is used to dry the coating on the cloth 9 .

[0055] In an optional embodiment, the aperture of the adsorption holes 3211 is 0.5-1.5 mm, the arrangement spacing 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 force range of the suction device 325 is 100-300 Pa, and the suction force is negatively correlated with the coating thickness of the coating roller 311 and is adjusted in a linked manner.

[0056] In an optional embodiment, the roller surface of the coating roller 311 is made of silicone rubber or polyurethane, with a surface hardness of Shore 50-70A. The roller surface is provided with a micron-level reticulated structure with a reticulated depth of 10-30 μm and a reticulated density of 20-40 lines / cm. A temperature regulating channel is provided inside the coating roller 311, and the roller surface temperature can be controlled at 30-60°C by circulating water or heat transfer oil.

[0057] In an optional embodiment, the drying device 4 includes an infrared heating plate and a hot air circulation chamber symmetrically arranged up and down, the heating temperature of the infrared heating plate is 60-120°C, the hot air flow rate in the hot air circulation chamber is 5-15m / s, and the temperature is 80-150°C; a temperature sensor and a wind speed sensor are provided in the drying device 4, which are electrically connected to the control components in the motor box 5 to realize closed-loop control of the drying parameters.

[0058] In an optional embodiment, the rotating roller arranged on the support plate includes a tension adjustment roller and a correction roller. The tension adjustment roller is driven by a servo motor and can adjust the tension of the cloth 9 in the range of 5-20N in real time; the correction roller is used in conjunction with a photoelectric sensor. When the cloth offset exceeds 5mm, the control component automatically adjusts the angle of the correction roller to correct the cloth position.

[0059] In an optional embodiment, the paint spray channel 312 is connected to a paint supply system, which includes a paint storage tank, a metering pump, and a filter. The metering pump has a flow control accuracy of ±0.5 mL / min. A paint recovery tank is located below the adsorption base 321 and is connected to the paint storage tank via a pipe, forming a paint recycling loop. The paint spray channel 312 includes a paint delivery pipeline, a nozzle assembly, a paint flow control device, and a cleaning device. The paint delivery pipeline is made of corrosion-resistant stainless steel with a smooth inner wall. The inner diameter of the pipeline is designed according to the paint flow and pressure requirements. An insulation layer is provided on the pipeline to prevent the viscosity of the paint from being affected by temperature fluctuations. A filter is installed at the pipeline inlet to filter out impurities in the paint and ensure the paint is pure. The nozzle assembly uses a multi-row nozzle array, with nozzles of either pressure-type or air-assisted atomization nozzles. The nozzle spacing and angle are optimized based on the distribution of the pressure roller 311 and the width of the fabric to ensure uniform paint coverage of the fabric surface. The nozzles are made of wear-resistant and corrosion-resistant ceramic or alloy materials to increase the nozzle life. Paint flow control device: Utilizing a combination of a high-precision metering pump and a flow control valve, the metering pump precisely controls the paint delivery rate, while the flow control valve adjusts the paint flow in real time according to instructions from the central controller. A flow sensor is installed on the paint spray channel 312 to monitor the paint flow in real time and provide feedback to the central controller, achieving closed-loop control of the paint flow. Cleaning device: A cleaning fluid inlet and drain outlet are provided on the paint spray channel 312, equipped with an automatic cleaning system. During cleaning, cleaning fluid is injected into the paint spray channel 312 via a switching valve, combined with high-pressure gas purging to remove residual paint from the pipes and nozzles. The cleaning fluid uses a specialized paint thinner or detergent to ensure effective cleaning without damaging the equipment.

[0060] Working principle: When the antistatic silk fabric surface coating device is working, the cloth 9 is conveyed from the unwinding roll 1 to the coating mechanism 3 via the rotating roller. The adsorption device 32 generates suction through the adsorption holes 3211 distributed in an array on the adsorption seat 321, fixes the cloth 9 on the adsorption seat 321 and accelerates the penetration of the coating. At the same time, the air flow in the air duct 320 drives the roller 326 to rotate to prevent the cloth 9 from getting stuck. The spraying paint channel 312 on the pressure coating device 31 sprays quaternary ammonium salt or carbon-based antistatic paint. The vertical distance between the three pressure coating rollers 311 gradually decreases along the forward direction of the cloth 9, forming a coating thickness. The adsorption seat 321 can push the adsorption device supporting side plate 323 to rotate around the rotating axis by rotating the top cylinder 334, and the spacing with the pressure coating roller 311 and the size of the air duct 320 are linked to realize the adaptation of "pressure coating thickness decreasing + suction force increasing"; the coated cloth 9 is dried by the infrared heating plate and the hot air circulation chamber of the drying device 4. The whole system realizes closed-loop adjustment of the paint flow, drying parameters, etc. through the control components in the motor box 5 to ensure uniform adhesion and sufficient penetration of the antistatic coating.

[0061] In summary, the surface coating device and coating method of the antistatic silk fabric are designed to include a coating mechanism 3 that includes a pressure coating device 31 arranged above the cloth 9, an adsorption device 32 below, and a support device 33, and the adsorption device 32 is fixed at both ends perpendicular to the moving direction of the cloth 9, and an adsorption seat 321 on it is provided with an array of adsorption holes 3211, and an air duct 320 is provided on the inner side. At the same time, the two ends of the pressure coating device 31 rise and fall on the support device 33, including a spray paint channel 312 and a pressure coating roller 311; it is achieved that the cloth 9 is coated when passing between the adsorption device 32 and the pressure coating device 31. The adsorption holes 3211 are adsorbed on the upper surface of the adsorption seat 321, which solves the problem of inaccurate distance control between the cloth 9 and the pressure coating device 31, and also uses suction to accelerate the penetration of the paint. The vertical distance from the pressure coating roller 311 to the adsorption seat 321 is changed by the lifting and lowering of the pressure coating device 31, so that the coating thickness gradually decreases along the forward direction of the cloth 9, thereby avoiding uneven coating thickness caused by the adsorption effect of the adsorption device 32 and ensuring the uniformity of the coating. At the same time, the paint penetration force at the starting position is improved, so that the antistatic coating can better adhere to the silk fabric, thereby improving the antistatic performance of the fabric and product quality. By rotatably setting a roller 326 at a position corresponding to each adsorption hole 3211 in each air duct 320 of the adsorption device 32, the two ends of the roller 326 are rotatably connected to the inner wall of the air duct 320, and it is close to the cloth 9 to fit the adsorption seat 321 on one side, and a gap is set on the other side. The top is not higher than the upper surface of the adsorption seat 321, and there is a gap between the bottom and the bottom plate of the air duct 320. When the suction device 325 is working, the air flow direction in the air duct 320 is opposite to the moving direction of the cloth 9. The air flow in the air duct 320 and the air flow in the adsorption holes 3211 drive the roller 326 to rotate in one direction, thereby driving the cloth 9 forward, thereby 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, and avoiding the impact of cloth jamming on coating quality and production progress.

[0062] By rotatably connecting the adsorption seat 321 with the lower inner plate 324 and fixing the two to the supporting device 33 respectively, and utilizing the rotation of the adsorption seat 321 to adjust the distance between it and the pressure coating roller 311 and the size of the two ends of the air duct 320, it is achieved that during the movement of the cloth 9, the pressure coating thickness gradient can be flexibly adjusted, and the suction force and the pressure coating thickness are dynamically matched according to the needs of different coating stages, so that the pressure coating thickness gradually decreases while the suction force gradually increases accordingly, thereby achieving the effect of optimizing the matching degree of the coating process parameters, accurately controlling the thickness and penetration effect of the antistatic coating, avoiding problems such as excessive coating or insufficient penetration, further improving the coating quality, enhancing the stability and reliability of the antistatic performance of the silk fabric, and meeting the diverse needs of different production scenarios and product standards.

[0063] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0064] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A surface coating device for antistatic silk fabric, used for forming an antistatic coating on the surface of the fabric (9), characterized in that: The coating mechanism (3) comprises a coating device (3) which comprises a pressure coating device (31) arranged above the cloth (9), an adsorption device (32) arranged below the cloth (9), and a supporting device (33); The adsorption device (32) is fixed to the support device (33) at both ends perpendicular to the moving direction of the cloth (9), and the adsorption device (32) includes an adsorption seat (321). The upper surface of the adsorption seat (321) is provided with a plurality of adsorption holes (3211) distributed in an array. An air duct (320) is provided on the inner side of the adsorption seat (321) at a position corresponding to each row of adsorption holes (3211). The cloth (9) passing between the adsorption device (32) and the pressure coating device (31) is adsorbed on the upper surface of the adsorption seat (321) by the adsorption holes (3211); The pressure coating device (31) is lifted and slid on the supporting device (33) at both ends perpendicular to the moving direction of the cloth (9). The pressure coating device (31) includes a spray paint channel (312) and at least two pressure coating rollers (311). The pressure coating device (31) changes the average vertical distance between each pressure coating roller (311) and the upper surface of the adsorption seat (321) during the lifting process. The vertical distance between each pressure coating roller (311) and the upper surface of the adsorption seat (321) gradually decreases along the forward direction of the cloth (9), so that the coating thickness gradually decreases during the pressure coating process, thereby avoiding uneven coating thickness caused by the adsorption effect of the adsorption device (32).

2. The surface coating device for antistatic silk fabric according to claim 1, characterized in that: A roller (326) is rotatably provided in each air duct (320) at a position corresponding to each adsorption hole (3211), and both ends of the roller (326) are rotatably connected to the inner wall of the air duct (320), and the side of the roller (326) close to the direction in which the cloth (9) comes is attached to the adsorption seat (321), and a gap is provided between the side of the roller (326) close to the direction in which the cloth (9) goes and the adsorption seat (321), and the top of the roller (326) is not lower than the upper surface of the adsorption seat (321), and a gap is provided between the bottom of the roller (326) and the bottom plate of the air duct (320); An air inlet (3243) and an air outlet (3242) are respectively provided at both ends of the air duct (320) along the moving direction of the cloth (9). The air outlet (3242) is connected to the air suction device (325). When the air suction device (325) is in operation, the air flow in the air duct (320) flows in the opposite direction to the moving direction of the cloth (9). The air flow in the air duct (320) and the air flow in the adsorption hole (3211) both rotate the roller (326) in one direction. The rotation of the roller (326) drives the cloth (9) forward, thereby preventing the cloth (9) from being adsorbed on the adsorption seat (321) and being unable to move.

3. The surface coating device for antistatic silk fabric according to claim 2, characterized in that: An inner plate (324) is provided below the adsorption seat (321), and the inner plate (324) is rotatably connected to the adsorption seat (321). Both ends of the inner plate (324) are fixed on the support device (33), and both ends of the adsorption seat (321) are rotatably provided on the support device (33). By controlling the rotation of the adsorption seat (321), while changing the distance between the upper surface of the adsorption seat (321) and each pressure coating roller (311), the size of the air ducts at both ends of the air duct (320) is also changed.

4. The surface coating device for antistatic silk fabric according to claim 3, characterized in that: An inner air duct plate (3212) is provided in the adsorption seat (321) at a position corresponding to the side wall of each air duct (320), and the roller (326) is rotatably connected to the inner air duct plate (3212). An outer air duct plate (3244) is provided in the inner plate (324) at a position corresponding to the side wall of each air duct (320). When the adsorption seat (321) rotates, the inner air duct plate (3212) is stuck in the outer air duct plate (3244) and slides, ensuring that the side wall of the air duct (320) remains sealed from the outside during rotation.

5. The surface coating device for antistatic silk fabric according to claim 3, characterized in that: The adsorption seat (321) is provided with adsorption device supporting side plates (323) at both ends close to the supporting device (33), the adsorption seat (321) is fixed on the adsorption device supporting side plates (323), and a plurality of inner plate rotating columns (3241) are fixed at both ends of the inner plate (324) at positions away from the rotation axis of the adsorption seat (321), and an arc-shaped hole (3231) is provided on the adsorption device supporting side plates (323) at positions corresponding to the inner plate rotating columns (3241), and each inner plate rotating column (3241) passes through and slides in the corresponding arc-shaped hole (3231), and a rotating shaft is provided on the adsorption device supporting side plates (323) at positions corresponding to the rotation axis of the adsorption seat (321), and the rotating shaft is rotatably connected to the supporting device (33), and the inner plate rotating columns (3241) are fixed on the supporting device (33).

6. The surface coating device for antistatic silk fabric according to claim 3, characterized in that: The roller (326) is a hollow structure, and a plurality of blades (3261) are provided on the circumference of both ends of the roller (326), and the end of each blade (3261) away from the rotation axis is lower than the upper surface of the adsorption seat (321).

7. The surface coating device for antistatic silk fabric according to claim 5, characterized in that: The pressure coating device (31) is provided with three pressure coating rollers (311), and the two ends of each pressure coating roller (311) are rotatably arranged on two pressure coating device support side plates (313). The two ends of the spray paint channel (312) are fixed on the pressure coating device support side plates (313), and the pressure coating device support side plates (313) are arranged on a side of the pressure coating roller (311) close to the direction of the cloth (9).

8. The surface coating device for antistatic silk fabric according to claim 7, characterized in that: The support device (33) includes a back plate (331), which is fixed to the support plates at both ends of the coating device. A bottom plate (332) and a vertical plate (333) are fixed to the back plate (331). A lifting cylinder (335), a guide rod (336) and two symmetrical rotating cylinders (334) are fixed to the bottom plate (332). The output shaft of the lifting 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). The end of the output shaft of the rotating cylinder (334) is movably arranged in a long hole (3232) provided 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 cylinders (334), so that the adsorption device support side plate (323) rotates around the support device (33).

9. The surface coating device for antistatic silk fabric according to claim 5, characterized in that: Two front and rear support rollers (322) are rotatably provided on the adsorption device support side plate (323) at both ends along the moving direction of the cloth (9), and the roller surfaces of the support rollers (322) are tangent to the upper surface of the adsorption seat (321).

10. A surface coating method for antistatic silk fabric, characterized in that: The surface coating device for the antistatic silk fabric according to any one of claims 1 to 9 comprises the following method: S1, a lifting pressure coating device (31) and a fixed adsorption device (32) are arranged on a fixed support device (33); S2, controlling the lifting and lowering of the pressure coating device (31), and adjusting the distance between the pressure coating device (31) and the adsorption device (32); S3, using the suction force of the adsorption device (32) to adsorb the cloth (9) onto the adsorption device (32), at which time 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, 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 on the adsorption device (32) to increase the penetration of the coating into the cloth (9).

Images