A coating film device and a method thereof

Abstract

The application belongs to the field of coating film, and particularly relates to a coating film device and a method thereof, which comprises a coating film platform, a linear moving assembly, a pressure adjusting assembly, a coating film roller and a coating film roller rotating driving assembly; the coating film platform is provided with sliding rails; the linear moving assembly comprises a linear driving part and a sliding block; the sliding block is provided with a sliding groove perpendicular to the plane of the coating film platform; the pressure adjusting assembly comprises a mounting column, the two ends of the mounting column are provided with sliding blocks in sliding fit with the sliding groove, the coating film roller is in the form of a cylinder and is detachably and rotatably arranged on the mounting column; the mounting column is provided with an electromagnet on the side facing the coating film platform, and the plane of the coating film platform is provided with a magnetic structure. The application realizes accurate adjustment of the pressure of the roller surface of the whole coating film roller on the fabric to be coated, and then facilitates control of the coating quality and the coating effect, and has higher improvement in coating uniformity, thickness control of the fabric, impression effect, surface quality of the fabric and the like.

Description

Technical Field

[0001] This invention belongs to the field of coating, specifically relating to a coating apparatus and method. Background Technology

[0002] Coating has wide applications in modern manufacturing processes. However, existing technologies face challenges in areas such as coating uniformity, fabric thickness control, embossing effect, and fabric surface quality. In traditional fabric coating processes, the pressure adjustment of the coating roller and the coating operation are usually limited by the structure and driving method, making further improvements difficult.

[0003] Specifically, conventional coating roller devices typically achieve pressure regulation by applying displacement and pressure to both ends of the coating roller shaft. This method requires extremely precise control of the displacement at both ends of the coating roller shaft (e.g., Chinese patent "CN201820784811.9 Pressure Roller Mechanism with Automatic Pressure Control"). The pressure roller's position is adjusted via a screw-nut pair, thereby regulating the pressure. The two screw-nut pairs are synchronously driven by a single double-headed motor combined with a bevel gear structure to ensure consistent displacement on both sides of the pressure roller. However, this method places extremely high demands on the gear structure and screw-nut pairs to achieve low displacement difference, and over time, the pressure... The pressure adjustment accuracy will also become worse and the maintenance cost will become higher. Once the displacement of the two ends of the coating roller shaft is inconsistent, there will be an angle between the coating roller surface and the surface of the fabric to be coated, which will affect the coating quality. The extremely precise control of the displacement of the two ends of the coating roller shaft places extremely high requirements on the linear moving parts that control the displacement of the coating roller shaft, thereby increasing the cost of the equipment and control. On the other hand, even if the displacement of the two ends of the coating roller shaft is consistent, there will still be a situation where the pressure at both ends of the coating roller is high and the pressure in the middle is low (due to the pressure distribution, the pressure roller only receives pressure at both ends and no pressure in the middle), which still makes it difficult to achieve precise pressure control of the coating roller.

[0004] Therefore, the current pressure adjustment method has the problem of inconsistent pressure at different points along the length of the coating roller, which affects the uniformity and quality of coating and is not suitable for scenarios with extremely high coating precision requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a coating device and method with low cost, simple structure and reliable high precision pressure regulation.

[0006] This invention provides a coating device, including a coating platform, a linear motion component, a pressure regulating component, a coating roller, and a coating roller rotation drive component;

[0007] The coating platform is provided with two parallel slide rails. The linear motion component includes a linear drive and two sliders that cooperate with the slide rails. The linear drive drives the sliders to move along the slide rails.

[0008] The slider is provided with a groove perpendicular to the plane of the coating platform. The pressure adjustment component includes a mounting column. The mounting column has sliding blocks at both ends that slide in cooperation with the groove. The coating roller has a cylindrical structure and is detachably and rotatably mounted on the mounting column.

[0009] The coating roller rotation drive assembly includes a power mechanism mounted on one of the sliders and a driven mechanism mounted on the coating roller or pressure regulating assembly. The power mechanism cooperates with the driven mechanism by gravity. After the coating roller is mounted on the mounting column, the driven mechanism drives the coating roller to rotate.

[0010] An electromagnet is provided on the side of the mounting column facing the coating platform. A magnetic structure is provided on the plane of the coating platform to control the magnetic attraction force of the electromagnet and control the pressure between the coating roller and the coating platform.

[0011] Furthermore, the electromagnet is strip-shaped and arranged along the rotation axis of the coating roller;

[0012] Alternatively, the electromagnets may be in the form of blocks and arranged at intervals along the rotation axis of the coating roller.

[0013] Furthermore, the power mechanism includes a motor mounting plate, a motor, a drive wheel, a driven wheel bracket, a driven wheel, a drive wheel, and a belt;

[0014] The motor mounting plate is disposed on the slider, the motor is disposed at one end of the motor mounting plate, its shaft passes through the other end of the motor mounting plate and is connected to the driving wheel, one end of the driven wheel bracket is hinged to the motor mounting plate with the axis of the motor shaft as the axis, and the other end is provided with an arc-shaped slide rail, the center of the arc of the arc-shaped slide rail coincides with the axis of the motor shaft, the wheel axle of the driven wheel is slidably engaged with the arc-shaped slide rail, and the wheel body of the driven wheel is parallel to the wheel body of the driving wheel, the belt is sleeved on the driving wheel and the driven wheel, the power wheel is disposed on one side of the driven wheel, and the power wheel is fixedly connected to the wheel axle of the driven wheel;

[0015] The driven mechanism includes a driven wheel connected to the driving wheel.

[0016] Furthermore, the arc-shaped slide rail includes two sets of oppositely arranged arc-shaped rail bodies and a connecting plate connecting the two arc-shaped rail bodies at their ends. The driven wheel is disposed between the two arc-shaped rail bodies, and a wheel axle is provided on both sides of the wheel body. The two wheel axles are slidably engaged with the two arc-shaped rail bodies respectively.

[0017] The arc-shaped rail is a through structure, with the axle of one of the driven wheels passing through the arc-shaped rail and connecting to the drive wheel.

[0018] Furthermore, a connecting rod is provided between the mounting column and the sliding block, and the driven mechanism includes a driven wheel rotatably mounted on the connecting rod.

[0019] Furthermore, a key block is provided on the side of the passive wheel facing the coating roller, and a keyway that mates with the key block is provided at one end of the coating roller.

[0020] Furthermore, it also includes a fabric laying platform disposed on the coating platform, wherein the magnetic structure is disposed on the fabric laying platform.

[0021] Furthermore, one end of the coating roller connected to the driven mechanism extends outward from the edge of the fabric laying platform, and an annular baffle plate is provided on the portion of the coating roller extending outward from the edge of the fabric laying platform.

[0022] Furthermore, the mounting column includes an inner column and an outer column rotatably mounted on the inner column via bearings, the electromagnet is disposed on the side of the inner column near the coating platform, and the coating roller is fixedly engaged with the outer column.

[0023] The present invention also provides a coating method, characterized by using a coating apparatus and comprising the following steps:

[0024] S1, the fabric to be coated is placed on the coating platform;

[0025] S2, apply coating to the fabric near the coating roller;

[0026] S3, control the magnetic attraction force of the electromagnet, thereby precisely controlling the pressure exerted by the coating roller surface on the fabric to be coated;

[0027] S4, control the linear drive to work, drive the coating roller to move along the coating platform, and at the same time control the power mechanism to work, drive the coating roller to rotate.

[0028] The beneficial effects of this invention are that the coating device provided in this embodiment can achieve fabric coating, test the coating performance of the coating roller surface, test the coating material, test the fabric, and so on. Through the above structural combination, the following effects are achieved:

[0029] 1. By using an electromagnet, the pressure exerted by the entire coating roller on the fabric to be coated can be precisely adjusted, thereby facilitating the control of coating quality and effect, and significantly improving coating uniformity, fabric thickness control, embossing effect, and fabric surface quality.

[0030] Specifically, since the pressure control source is an electromagnet located in the axial direction inside the coating roller, the pressure at each position on the coating roller surface can be directly controlled. Compared with the conventional method of controlling the pressure at both ends of the coating roller's shaft, this application can ensure that the pressure is consistent at all points along the length of the coating roller surface, thus achieving precise pressure adjustment.

[0031] 2. In addition to adjusting the pressure of the coating roller, this application can also realize the rotation of the coating roller. The rotation direction can be forward or reverse, thereby increasing the friction between the fabric to be coated and the coating roller and controlling the tension. Appropriate tension control can prevent problems such as fabric loosening, wrinkling, and skewing, and can also achieve better coating uniformity and consistency. At the same time, it can also reduce potential defects such as air bubbles in the coating. In addition, unlike the conventional rotation method of existing coating rollers, the coating roller rotation drive component of this application can move together with the slider, pressure adjustment component and coating roller, and can also continuously drive the rotation of the coating roller during the pressure adjustment process, without disengagement or loosening.

[0032] 3. This application facilitates the replacement of different models of coating rollers to meet different coating requirements. The replacement of the coating roller only requires removing the coating roller and the pressure adjustment component together from the slide groove of the slider and replacing the coating roller onto the pressure adjustment component. The whole replacement process is convenient and quick. Attached Figure Description

[0033] Appendix Figure 1 This is a schematic diagram of the first angle structure of the present invention;

[0034] Appendix Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0035] Appendix Figure 3 This is a schematic diagram of the second angle structure of the present invention;

[0036] Appendix Figure 4 for Figure 1 A magnified view of a section at point B in the middle;

[0037] Appendix Figure 5 This is a top view of the present invention;

[0038] Appendix Figure 6 for Figure 5 C-axis sectional view;

[0039] Appendix Figure 7 for Figure 5 Sectional view along the DD direction;

[0040] Appendix Figure 8 for Figure 7A magnified view of a section at point E in the middle;

[0041] Appendix Figure 9 This is a schematic diagram of the structure of the present invention with the coating roller hidden.

[0042] Appendix Figure 10 This is a schematic diagram of the combination of the coating roller and the pressure regulating component in this invention;

[0043] Appendix Figure 11 This is a schematic diagram of the structure of the replacement square coating roller in this invention.

[0044] In the diagram, 1-coating platform; 11-slide rail; 12-controller; 2-slider; 21-slide groove; 3-pressure adjustment assembly; 31-mounting column; 311-inner column; 312-outer column; 32-sliding block; 33-electromagnet; 34-connecting rod; 4-coating roller; 41-keyway; 42-annular baffle; 5-coating roller rotation drive assembly; 51-power mechanism; 511-motor mounting plate; 512-motor; 513-drive wheel; 514-driven wheel bracket; 5141-arc slide rail; 51411-arc rail body; 51412-connecting plate; 515-driven wheel; 516-power wheel; 517-belt; 52-driven mechanism; 521-passive wheel; 522-key block; 6-laying platform. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0046] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0047] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0050] As attached Figure 1 - Appendix Figure 11 As shown, the present invention provides a coating device, including a coating platform 1, a linear motion component, a pressure regulating component 3, a coating roller 4, and a coating roller rotation drive component 5; the coating platform 1 is mainly used as the machine body, and the upper surface of the coating platform 1 can be used to install the fabric to be coated; the linear motion component is used to drive the pressure regulating component 3 and the coating roller 4 to move linearly, so that the coating roller 4 can evenly coat the coating material onto the fabric to be coated; and the coating roller rotation drive component 5 is used to drive the coating roller 4 to rotate, thereby improving the quality of the coating.

[0051] The coating platform 1 is provided with two parallel slide rails 11. The linear motion component includes a linear drive and two sliders 2 that cooperate with the slide rails 11. Each slider 2 cooperates with one slide rail 11, and the two sliders 2 move synchronously. The linear drive drives the sliders 2 to move along the slide rails 11. In a preferred embodiment, the linear drive includes a lead screw and nut assembly of a motor, wherein the nut is fixedly connected to the slider 2, thereby driving the slider 2 to move linearly. The specific installation method is existing technology and will not be described in detail here.

[0052] The slider 2 is provided with a groove 21 perpendicular to the plane of the coating platform 1. The pressure adjustment component 3 includes a mounting column 31. The mounting column 31 has sliding blocks 32 at both ends that slide in cooperation with the groove 21. That is, the entire pressure adjustment component 3 can slide on the groove 21 in the vertical direction, thereby adjusting the distance between the coating roller 4 and the coating platform 1. This provides a structural basis for adjusting the pressure of the coating roller 4 on the fabric to be coated. The coating roller 4 is a cylindrical structure and is detachably and rotatably mounted on the mounting column 31. The rotatable mounting of the coating roller 4 on the mounting column 31 can drive the coating roller 4 to rotate, thereby realizing the rotation drive and control of the coating roller 4. In addition, the detachable and rotatable mounting of the coating roller 4 on the mounting column 31 allows for the replacement of the structure and size of the coating roller 4 to adapt to different types of roller structures, such as micro-concave rollers, square rollers (when using square rollers, the coating roller 4 is connected to the coating roller rotation drive component 5 to switch the working plane of the coating roller 4), etc.

[0053] The coating roller rotation drive assembly 5 includes a power mechanism 51 mounted on one of the sliders 2 and a driven mechanism 52 mounted on the coating roller 4 or the pressure regulating assembly 3. The power mechanism 51 cooperates with the driven mechanism 52 by gravity, so that the power mechanism 51 can always cooperate with the driven mechanism 52 during the sliding process of the pressure regulating assembly 3 and the coating roller 4 along the slide groove 21, avoiding separation of the power mechanism 51 and the driven mechanism 52 during pressure adjustment. After the coating roller 4 is installed on the mounting post 31, the driven mechanism 52 drives the coating roller 4 to rotate. At this time, when the driven mechanism 52 is mounted on the coating roller 4, the driven mechanism 52 directly engages with the power mechanism 51 after the coating roller 4 is installed on the mounting post 31; when the driven mechanism 52 is mounted on the mounting post 31, the coating roller 4 is fixedly connected to the driven mechanism 52 after being installed on the mounting post 31, so that the driven mechanism 52 directly engages with the power mechanism 51.

[0054] An electromagnet 33 is provided on the side of the mounting column 31 facing the coating platform 1. A magnetic structure is provided on the plane of the coating platform 1. The magnetic structure can be a metal structure that can be attracted by a magnet, or it can be an electromagnet provided on the coating platform 1. Thus, the electromagnet 33 can move toward the coating platform 1 by means of attraction. By controlling the magnetic attraction force of the electromagnet 33, the pressure between the coating roller 4 and the coating platform 1 can be controlled, and finally, the pressure of the coating roller 4 acting on the fabric to be coated can be precisely controlled.

[0055] The coating apparatus provided in this embodiment can achieve fabric coating, and can be used to test the coating performance of the coating roller 4, test the coating material, test the fabric, and so on. Through the above structural combination, the following effects are achieved:

[0056] 1. The pressure exerted on the fabric to be coated by the entire coating roller 4 by the electromagnet 33 is precisely adjusted, which facilitates the control of coating quality and coating effect, and greatly improves coating uniformity, fabric thickness control, embossing effect and fabric surface quality.

[0057] Specifically, since the pressure control source is the electromagnet 33, which is set in the axial direction inside the coating roller 4, the pressure at various positions on the surface of the coating roller 4 can be directly controlled. Compared with the conventional method of controlling the pressure at both ends of the rotating shaft of the coating roller 4 (the conventional method requires extremely precise control of the displacement at both ends of the rotating shaft of the coating roller 4. If the displacement at both ends of the rotating shaft of the coating roller 4 is inconsistent, there will be an angle between the surface of the coating roller 4 and the surface of the fabric to be coated, which will affect the coating quality. The extremely precise control of the displacement at both ends of the rotating shaft of the coating roller 4 places extremely high requirements on the linear moving parts that control the displacement of the rotating shaft of the coating roller 4, thereby increasing the cost of the device and control. On the other hand, even if the displacement at both ends of the rotating shaft of the coating roller 4 is consistent, there will still be a situation where the pressure at both ends of the coating roller 4 is large and the pressure in the middle is small, which is still difficult to achieve precise pressure control of the coating roller 4), this application can ensure that the pressure at all points along the length of the coating roller 4 is consistent, and achieve precise pressure adjustment.

[0058] 2. In addition to adjusting the pressure of the coating roller 4, this application can also realize the rotation of the coating roller 4. The rotation direction can be forward or reverse, which can be selected as needed. This can increase the friction between the fabric to be coated and the coating roller 4 and control the tension. Appropriate tension control can prevent problems such as fabric loosening, wrinkling, and skewing, and can also achieve better coating uniformity and consistency. At the same time, it can also reduce possible defects such as air bubbles in the coating. In addition, unlike the conventional rotation method of the existing coating roller 4 (power roller or motor set on one shaft of the coating roller), the coating roller rotation drive component 5 of this application can not only connect the slider 2, the pressure adjustment component 3 and the coating roller 4 to move together, but also can always drive the rotation of the coating roller 4 during the pressure adjustment process, without disengagement or loosening.

[0059] 3. This application facilitates the replacement of different models of coating rollers 4 to meet different coating requirements. The replacement of coating roller 4 only requires removing coating roller 4 and pressure adjustment component 3 together from slide groove 21 of slider 2 and replacing coating roller 4 onto pressure adjustment component 3. The whole replacement process is convenient and quick.

[0060] In one embodiment, the electromagnet 33 is strip-shaped and arranged along the rotation axis of the coating roller 4, thereby ensuring that the pressure of the working parts along the length of the coating roller 4 is balanced.

[0061] Alternatively, the electromagnet 33 can be in the form of a block and arranged at intervals along the rotation axis of the coating roller 4. Similarly, this arrangement can ensure that the pressure of the working parts in the length direction of the coating roller 4 is balanced, and at the same time reduce the power requirement of the electromagnet 33.

[0062] In one embodiment, the power mechanism 51 includes a motor mounting plate 511, a motor 512, a drive wheel 513, a driven wheel bracket 514, a driven wheel 515, a drive wheel 516, and a belt 517.

[0063] The motor mounting plate 511 is mounted on the slider 2, allowing the entire power mechanism 51 to move together with the slider 2. The motor 512 is mounted at one end of the motor mounting plate 511, with its shaft passing through the other end of the motor mounting plate 511 and connected to the drive wheel 513, ensuring stable mounting of the motor 512. One end of the driven wheel bracket 514 is hinged to the motor mounting plate 511 with the axis of rotation of the motor 512 as its center, meaning the driven wheel bracket 514 can rotate as a whole, causing the driven wheel 515 to rotate accordingly. The other end of the driven wheel bracket 514 is provided with an arc-shaped slide rail 5141, the center of which coincides with the axis of rotation of the motor 512. The axle of the driven wheel 515 slides in cooperation with the arc-shaped slide rail 5141, allowing the driven wheel 515 to rotate around the axis of rotation of the motor 512. The axis rotates, causing the driven wheel 515 to always mesh with the driven mechanism 52 by gravity. The wheel body of the driven wheel 515 is parallel to the wheel body of the driving wheel 513. The belt 517 is sleeved on the driving wheel 513 and the driven wheel 515. The belt 517 causes the driving wheel 513 to rotate, which in turn drives the driven wheel 515 to rotate. Since the axis of the driven wheel 515 always maintains a constant distance from the axis of the motor 512, the belt 517 can always maintain tension. The power wheel 516 is located on one side of the driven wheel 515 and is fixedly connected to the axle of the driven wheel 515, thereby enabling the motor 512 to drive the power wheel 516 to rotate. The driven mechanism 52 includes a passive wheel 521 connected to the power wheel 516, enabling the motor 512 to drive the passive wheel 521 to rotate, which in turn drives the coating roller 4 to rotate.

[0064] The power mechanism 51 provided in this embodiment can move along with the slider 2 and always maintain engagement with the driven mechanism 52. Furthermore, the driven wheel 515 and the power wheel 516 can move along the arc-shaped slide rail 5141, thus maintaining engagement with the driven mechanism 52 by gravity. This ensures that the pressure adjustment of the coating roller 4 does not affect the engagement between the power mechanism 51 and the driven mechanism 52. Simultaneously, since the center of the arc of the arc-shaped slide rail 5141 coincides with the axis of the motor 512's rotating shaft, it ensures that the driven wheel 515 remains engaged throughout its movement. The driven wheel 515 is tightly meshed with the drive wheel 513 via the belt 517. The rotational arrangement of the driven wheel bracket 514 allows the driven wheel 515, the drive wheel 516, and the arc-shaped slide rail 5141 to move significantly away from the driven mechanism 52. This provides space for the driven mechanism 52, the pressure regulating component 3, and the coating roller 4 to be disassembled and assembled from the slide rail 21, reducing the difficulty of disassembly and assembly. Furthermore, since the driven wheel bracket 514 also rotates around the axis of the motor 512, the drive wheel 513, the driven wheel 515, and the belt 517 remain in a coordinated state at all times during rotation.

[0065] In one embodiment, the arc-shaped slide rail 5141 includes two sets of opposing arc-shaped rail bodies 51411 and a connecting plate 51412 connecting the two arc-shaped rail bodies 51411 at their ends, which can improve the structural strength of the arc-shaped slide rail 5141. The driven wheel 515 is disposed between the two arc-shaped rail bodies 51411, and axles are provided on both sides of the wheel body. The two axles slide in cooperation with the two arc-shaped rail bodies 51411 respectively, which can improve the stability of the cooperation between the driven wheel 515 and the arc-shaped slide rail 5141 and prevent the driven wheel 515 from deviating.

[0066] The arc-shaped rail body 51411 is a through structure, with the axle of one of the driven wheels 515 passing through the arc-shaped rail body 51411 and connecting to the drive wheel 516, which facilitates the fixed connection between the drive wheel 516 and the axle of the driven wheel 515.

[0067] In one embodiment, a connecting rod 34 is also provided between the mounting post 31 and the sliding block 32 to facilitate the connection between the mounting post 31 and the sliding block 32. The driven mechanism 52 includes a passive wheel 521 rotatably mounted on the connecting rod 34. The passive wheel 521 can be rotatably connected to the connecting rod 34 through a bearing structure, and preferably the passive wheel 521 cannot move along the length direction of the connecting rod 34.

[0068] In one embodiment, the passive wheel 521 is provided with a key block 522 on the side facing the coating roller 4, and one end of the coating roller 4 is provided with a keyway 41 that cooperates with the key block 522, so as to realize the detachable connection between the coating roller 4 and the passive wheel 521. This arrangement can keep the structure of the coating roller 4 simple and save costs when replacing the coating roller 4.

[0069] In one embodiment, the present invention further includes a fabric laying platform 6 disposed on the coating platform 1, wherein the magnetic structure is disposed on the fabric laying platform 6. By disposing of the fabric laying platform 6, a raised platform can be provided, which facilitates the installation of the fabric to be coated and the cleaning of the coating. The fabric laying platform 6 is preferably made of iron material, that is, the entire fabric laying platform 6 is used as a magnetic structure, thereby improving the pressure adjustment accuracy of the coating roller 4.

[0070] In one embodiment, one end of the coating roller 4 connected to the driven mechanism 52 extends out of the edge of the fabric laying platform 6. The portion of the coating roller 4 extending out of the edge of the fabric laying platform 6 is provided with an annular baffle 42. The annular baffle 42 can prevent the coating material from entering the coating roller rotation drive assembly 5, thereby avoiding contamination of the coating roller rotation drive assembly 5 and affecting its use.

[0071] In one embodiment, the mounting post 31 includes an inner post 311 and an outer post 312 rotatably mounted on the inner post 311 via a bearing. The electromagnet 33 is disposed on the side of the inner post 311 near the coating platform 1. The coating roller 4 is fixedly engaged with the outer post 312. In this embodiment, the coating roller 4 is indirectly rotatably connected to the inner post 311 via the outer post 312, which can further reduce the structural complexity of the coating roller 4 and thus reduce the cost of replacing the coating roller 4. The fixed engagement between the coating roller 4 and the outer post 312 can be an interference fit, preferably a spline fit, to simplify the installation. The bearing can be made of a non-magnetic material to avoid being affected by the electromagnet 33.

[0072] The present invention also provides a coating method using the above-described coating apparatus, comprising the following steps:

[0073] S1, the fabric to be coated is placed on the coating platform 1. When a fabric laying platform 6 is provided, the fabric to be coated is placed on the fabric laying platform 6.

[0074] S2, apply coating to the fabric near the coating roller 4. This can be done by directly squeezing the coating onto the beginning of the fabric, or by setting up a coating mechanism to arrange the coating.

[0075] S3, the controller 12 controls the magnetic attraction force of the electromagnet 33, thereby precisely controlling the pressure exerted by the coating roller 4 on the fabric to be coated. The pressure can be adjusted according to actual needs.

[0076] S4, control the linear drive to work, drive the coating roller 4 to move along the coating platform 1, and at the same time control the power mechanism 51 to work, drive the coating roller 4 to rotate, and complete the coating of the fabric to be coated.

[0077] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A coating apparatus, characterized in that, It includes a coating platform (1), a linear motion assembly, a pressure regulating assembly (3), a coating roller (4), and a coating roller rotation drive assembly (5). The coating platform (1) is provided with two parallel slide rails (11). The linear motion component includes a linear drive and two sliders (2) that cooperate with the slide rails (11). The linear drive drives the sliders (2) to move along the slide rails (11). The slider (2) is provided with a groove (21) perpendicular to the plane of the coating platform (1). The pressure adjustment component (3) includes a mounting column (31). The mounting column (31) has sliding blocks (32) at both ends that slide in cooperation with the groove (21). The coating roller (4) is a cylindrical structure and is detachably and rotatably mounted on the mounting column (31). The coating roller rotation drive assembly (5) includes a power mechanism (51) mounted on one of the sliders (2) and a driven mechanism (52) mounted on the coating roller (4) or the pressure regulating assembly (3). The power mechanism (51) cooperates with the driven mechanism (52) by gravity. After the coating roller (4) is mounted on the mounting post (31), the driven mechanism (52) drives the coating roller (4) to rotate. An electromagnet (33) is provided on the side of the mounting column (31) facing the coating platform (1). A magnetic structure is provided on the plane of the coating platform (1) to control the magnetic attraction force of the electromagnet (33) and control the pressure between the coating roller (4) and the coating platform (1). The power mechanism (51) includes a motor mounting plate (511), a motor (512), a drive wheel (513), a driven wheel bracket (514), a driven wheel (515), a drive wheel (516), and a belt (517). The motor mounting plate (511) is mounted on the slider (2). The motor (512) is mounted on one end of the motor mounting plate (511), and its shaft passes through the other end of the motor mounting plate (511) and is connected to the driving wheel (513). One end of the driven wheel bracket (514) is hinged to the motor mounting plate (511) with the axis of the motor (512) shaft as the center, and the other end is provided with an arc-shaped slide rail (5141). The arc center coincides with the axis of the motor (512) shaft. The axle of the driven wheel (515) is slidably engaged with the arc-shaped slide rail (5141). The wheel body of the driven wheel (515) is parallel to the wheel body of the driving wheel (513). The belt (517) is sleeved on the driving wheel (513) and the driven wheel (515). The power wheel (516) is located on one side of the driven wheel (515). The power wheel (516) is fixedly connected to the axle of the driven wheel (515). The driven mechanism (52) includes a passive wheel (521) that cooperates with the drive wheel (516). The arc-shaped slide rail (5141) includes two sets of oppositely arranged arc-shaped rail bodies (51411) and a connecting plate (51412) connecting the two arc-shaped rail bodies (51411) at their ends. The driven wheel (515) is arranged between the two arc-shaped rail bodies (51411), and a wheel axle is provided on both sides of the wheel body. The two wheel axles are slidably engaged with the two arc-shaped rail bodies (51411) respectively. The arc-shaped rail (51411) is a through structure, and the axle of one of the driven wheels (515) passes through the arc-shaped rail (51411) and is connected to the drive wheel (516).

2. The coating apparatus as claimed in claim 1, characterized in that, The electromagnet (33) is strip-shaped and arranged along the rotation axis of the coating roller (4); Alternatively, the electromagnets (33) are in block shape and are arranged at intervals along the rotation axis of the coating roller (4).

3. The coating apparatus as described in claim 1, characterized in that, A connecting rod (34) is also provided between the mounting column (31) and the sliding block (32), and the driven mechanism (52) includes a passive wheel (521) rotatably mounted on the connecting rod (34).

4. The coating apparatus as described in claim 3, characterized in that, The passive wheel (521) is provided with a key block (522) on the side facing the coating roller (4), and one end of the coating roller (4) is provided with a keyway (41) that cooperates with the key block (522).

5. The coating apparatus as claimed in claim 4, characterized in that, It also includes a fabric laying platform (6) disposed on the coating platform (1), and the magnetic structure is disposed on the fabric laying platform (6).

6. The coating apparatus as claimed in claim 5, characterized in that, The coating roller (4) is connected to the driven mechanism (52) at one end, which extends out of the edge of the fabric laying platform (6). The part of the coating roller (4) extending out of the edge of the fabric laying platform (6) is provided with an annular baffle plate (42).

7. The coating apparatus according to any one of claims 1-6, characterized in that, The mounting column (31) includes an inner column (311) and an outer column (312) rotatably mounted on the inner column (311) via a bearing. The electromagnet (33) is located on the side of the inner column (311) near the coating platform (1). The coating roller (4) is fixedly engaged with the outer column (312).

8. A coating method, characterized in that, Using the coating apparatus as described in any one of claims 1-7, the following steps are included: S1, the fabric to be coated is placed on the coating platform (1); S2, apply coating to the fabric near the coating roller (4); S3, control the magnetic attraction force of the electromagnet (33), and then precisely control the pressure of the coating roller (4) on the fabric to be coated; S4, control the linear drive to work, drive the coating roller (4) to move along the coating platform (1), and at the same time control the power mechanism (51) to work, drive the coating roller (4) to rotate.

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