Coating device
By using adjustable coating rollers and feeding mechanisms in the coating device, the problem of scraper damage to the substrate is solved, uniform coating and thickness control of the two-sided surface of the substrate is achieved, and the yield of the sheet is improved. Productivity.
Patent Information
- Application Number
- CN202411398078.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2024-12-17
AI Technical Summary
In existing coating devices, scrapers often damage the substrate, resulting in a decrease in yield of composite sheets.
Using a coating device without a scraper, a pair of adjustable coating rollers and feeding mechanisms can achieve uniform coating and thickness control of the surface coating on both sides of the substrate. The coating roller is made of polyurethane or polyketone materials and is equipped with Adjustable cylinder and rail system to adjust coating film thickness and coating thickness.
It is achieved to finely control the coating thickness and coating distribution without damaging the substrate, and improve the yield and production efficiency of the sheet.
Smart Images
Figure CN119140352A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of sheet material production and manufacturing, in particular to a coating device capable of applying coatings to double-side surfaces of a substrate. Background Art
[0002] There is a type of sheet material with a double-sided coating structure, wherein the double-sided coating is formed by evenly applying coating on both sides of the substrate and drying. A coating device is a mechanical device used to evenly apply coating on various substrates. It is widely used in industrial production, such as coating coatings, adhesives, lubricants, etc. on the surface of paper, film, metal foil and other materials.
[0003] In the prior art, the core components of the coating device usually include a coating roller, a scraper, a feeding system and a control system, which work together to ensure the uniformity of the coating and accurately control the thickness of the coating. Among them, the coating roller is used to apply the coating material to the substrate, and the scraper removes the excess coating to ensure that the coating thickness meets the requirements. However, since the coating applied to the substrate is usually thin, the scraper often contacts and damages the substrate, which reduces the yield rate of the composite sheet to a certain extent. Summary of the invention
[0004] In view of the technical problem in the prior art that scrapers often damage substrates, the present invention aims to provide a coating device that does not use scrapers and can control the thickness of the coating.
[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coating device that can apply coating on the double-side surface of a substrate, comprising: a frame; a coating mechanism, comprising a pair of coating rollers that can clamp the substrate from opposite sides, each of the coating rollers can be rotatably supported on the frame and extend along the width direction of the substrate, and each of the coating rollers has an outer peripheral surface suitable for forming a coating film layer; a thickness adjustment mechanism, comprising a pair of adjustment units that can respectively adjust the coating film thickness of a pair of coating rollers, each of the adjustment units comprises an adjustment roller that can approach and move away from the coating roller and a pair of adjustable cylinders for driving the adjustment roller to move, the adjustment roller extends along the width direction of the substrate, and the adjustable cylinder can adjust the axial centerline spacing between the adjustment roller and the coating roller; and a feeding mechanism, comprising a pair of dripping tubes that can respectively provide coating to a pair of the coating rollers, the dripping tubes are provided with a plurality of dripping holes and are located on the upper side of the adjustment roller or / and the coating roller.
[0006] In the above technical solution, preferably, the pair of coating rollers includes a first coating roller movable in a vertical direction, and the coating mechanism also includes a pair of driving cylinders supported on the frame, and the pair of driving cylinders are respectively connected to the two side ends of the first coating roller to drive the first coating roller to move back and forth.
[0007] In the above-mentioned preferred scheme, it is further preferred that the coating mechanism also includes a pair of vertical slide rails fixedly arranged on the frame and a pair of first sliders respectively slidably mounted on the pair of vertical slide rails, the two side ends of the first coating roller are respectively rotatably supported on the pair of first sliders, and the cylinder shafts of a pair of driving cylinders are respectively fixedly connected to the pair of first sliders.
[0008] In the above preferred solution, it is further preferred that the pair of coating rollers include a second coating roller detachably mounted on the frame, the coating mechanism also includes deep groove bearings mounted on both side ends of the second coating roller, the frame is provided with a pair of matching grooves respectively adapted to the pair of deep groove bearings and a pair of disassembly and assembly channels respectively connected to the pair of matching grooves, the second coating roller is rotatably supported on the pair of matching grooves via the pair of deep groove bearings, and the disassembly and assembly channels are used for the second coating roller to be mounted on and detached from the frame. It is also further preferred that the disassembly and assembly channels have a guide surface adjacent to the matching grooves.
[0009] In the above technical solution, preferably, the coating roller is made of polyurethane and / or polyketone material.
[0010] In the above technical solution, preferably, the feeding system further comprises a material barrel, the material barrel is installed on the upper side of a pair of dripping tubes and is fluidly connected to the pair of dripping tubes. It is also further preferred that the feeding mechanism further comprises a material pump and a material pool located at the lower side of the pair of coating rollers and the pair of regulating rollers, and the material pool, the material pump and the material barrel are fluidly connected in sequence. It is also further preferred that the feeding mechanism further comprises a main pipeline and a pinch valve arranged on the main pipeline, the material barrel, the main pipeline and the pair of dripping tubes are fluidly connected in sequence, and the pinch valve is connected to the material pump signal and can adjust the opening based on the signal of the material pump.
[0011] In the above technical solution, the adjustment unit also includes a pair of horizontal slide rails fixedly mounted on the frame and second sliders respectively slidably matched with the pair of horizontal slide rails, the two side ends of the adjustment roller are respectively rotatably supported on the pair of second sliders, and the cylinder shafts of a pair of adjustable cylinders are respectively fixedly connected to the pair of second sliders to drive the adjustment roller to move.
[0012] Compared with the prior art, the coating device provided by the technical solution of the present invention can adjust the axial centerline spacing between the adjusting roller and the corresponding coating roller (that is, adjust the gap or contact pressure between the two) through a pair of adjustable cylinders (the adjustable cylinders can be continuously adjusted within a certain range according to the requirements of the control signal, thereby finely controlling the stroke of the cylinder shaft), thereby achieving the technical effect of adjusting the thickness of the coating film on the coating roller and controlling the coating thickness on the substrate. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The present invention is a three-dimensional diagram of a coating device provided; Figure 2 for Figure 1 A front view of the coating device shown; Figure 3 for Figure 1 A side cross-sectional view of the coating device shown; Figure 4 for Figure 3 A partial enlarged view of point A shown; Figure 5 for Figure 1 A system schematic diagram of the oil supply mechanism of the coating device shown.
[0014] Note in the figure: Coating device; Frame; 11. Wall panel; 12. Cross brace; 13. Disassembly and assembly channel; first coating roller; 22, second coating roller; 23, connecting plate; 24, driving cylinder; 241, cylinder body; 242, cylinder shaft; Vertical slide rail; 26. First slide block; 27. Deep groove bearing; Adjusting roller; 32, adjustable cylinder; 321, cylinder body; 322, cylinder shaft; 33, horizontal slide rail; 34, second slide block; 41. Material barrel; 42. Material dripping pipe; 43. Material pool; 44. Material pump; 45. Main pipeline; 46. Pinch valve. DETAILED DESCRIPTION
[0015] In order to explain the technical content, structural features, objectives and effects of the present application in detail, the technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.
[0016] In this application, spatially relative terms such as "under", "below", "under", "lower", "above", "upper", "above", "higher", "side" (for example, as in "sidewall"), etc., are used to describe the relationship of one element to another (other) element as shown in the accompanying drawings. The spatially relative terms are intended to include different orientations of the device in use, operation and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, the elements described as "under" or "beneath" other elements or features will then be positioned as "above" the other elements or features. Therefore, the exemplary term "under" can include both above and below orientations. In addition, the device can be positioned otherwise (for example, rotated 90 degrees or at other orientations), so the spatially relative descriptors used herein are interpreted accordingly.
[0017] The present invention provides a coating device 100 that can apply coating (the coating in the present application is a liquid material with high fluidity, such as silicone oil) to the double-sided surfaces of a substrate, and can control the coating thickness on the double-sided surfaces of the substrate without using a scraper. Figure 1 As shown, the coating device 100 includes a frame 1 for providing support, a coating mechanism for pulling a substrate and applying coating to both sides of the substrate, a thickness adjustment mechanism for controlling the coating thickness on both sides of the substrate, and a feeding mechanism for providing coating.
[0018] Combination Figure 2-3 The frame 1 includes a pair of wall panels 11 arranged opposite to each other along the width direction of the substrate and a plurality of cross braces 12 also extending along the width direction of the substrate. The wall panels 11 extend in the vertical direction and are firmly locked to the ground or platform by a plurality of anchor bolts (not marked in the figure), and both ends of each cross brace 12 are fixedly connected to the wall panels 11 on the corresponding side to improve the stability of the frame 1.
[0019] The coating mechanism includes a first coating roller 21 and a second coating roller 22 extending in the width direction of the substrate. The first and second coating rollers each have an outer peripheral surface suitable for forming a coating film layer and are configured to clamp the substrate from opposite sides. Thus, the first and second coating rollers can apply the coating to the double-side surface of the substrate while conveying the substrate downstream. It can be understood that the thickness of the coating film layer formed on the first and second coating rollers directly affects the coating thickness on the double-side surface of the substrate.
[0020] Furthermore, combined with Figure 4In order to facilitate loading and unloading of the substrate, the first coating roller 21 is configured to be movable in the vertical direction. Specifically, the coating mechanism further includes a connecting plate 23 fixedly mounted on the frame 1 and a pair of driving cylinders 24 for driving the first coating roller 21 to move. The driving cylinder 24 includes a rigid body 241 fixedly mounted on the connecting plate 23 and a cylinder shaft 242 that can be extended and retracted relative to the cylinder body 241. The cylinder shafts 242 of the pair of driving cylinders 24 are respectively connected to the two side ends of the first coating roller 21 to drive the first coating roller 21 to move.
[0021] Furthermore, in order to prevent the first coating roller 21 from deviating from the vertical direction during the up and down movement, the coating mechanism further includes a pair of vertical slide rails 25 respectively fixedly arranged on a pair of wall panels 11 and a pair of first sliders 26 respectively slidably fitted inside the vertical slide rails 25. The two side ends of the first coating roller 21 are respectively rotatably connected to the pair of first sliders 26, and the cylinder shafts 242 of the pair of driving cylinders 24 are respectively fixedly connected to the pair of first sliders 26, so that the first coating roller 21 can be driven to move up and down by the pair of driving cylinders 24.
[0022] Furthermore, in order to facilitate the replacement and maintenance of the roller body, the second coating roller 22 is configured to be detachably mounted on the frame 1. Specifically, the coating mechanism further includes a pair of deep groove bearings 27 mounted on both side ends of the second coating roller 22. A pair of matching grooves adapted to the deep groove bearings 27 and a pair of disassembly and assembly channels 13 respectively connected to the pair of matching grooves (not marked in the figure) are respectively provided on the pair of wall panels 11. The second coating roller 22 is rotatably supported on the pair of matching grooves through the pair of deep groove bearings 27, and maintains a matching state (i.e., does not separate from the pair of matching grooves) under the pressure of the first coating roller 21.
[0023] Furthermore, each matching groove has a top opening and is connected to the corresponding disassembly channel 13 through the top opening. Each disassembly channel 13 has a disassembly opening (not marked in the figure) away from the matching groove and a guide surface (not marked in the figure) adjacent to the matching groove. The disassembly opening is configured to be exposed to the outside from one side of the wall 11 in the moving direction of the substrate, and the guide surface is configured to be inclined toward the top opening of the matching groove to facilitate the disassembly of the second coating roller 22.
[0024] Furthermore, the first and second coating rollers provided in this embodiment are both made of polyurethane and / or polyketone materials, so that the first and second coating rollers have many advantages such as wear resistance, corrosion resistance, and stable chemical properties.
[0025] Continue reading Figure 2-4 The thickness adjustment mechanism includes a pair of adjustment units that can adjust the coating film thickness of the first and second coating rollers, respectively. The following is a structural description of the adjustment unit for adjusting the coating film thickness of the first coating roller 21, and the other adjustment unit can refer to the following description.
[0026] The adjustment units each include an adjustment roller 31 that can approach and move away from the first coating roller 21 and a pair of adjustable cylinders 32 that can drive the adjustment roller 31 to move. The adjustment roller 31 extends along the width direction of the substrate, and each adjustable cylinder 32 includes a cylinder body 321 fixedly mounted on the frame 1 and a cylinder shaft 322 that can be extended and retracted relative to the cylinder body 321. The pair of cylinder shafts 322 are respectively connected to the two side ends of the second coating roller 22 to drive the adjustment roller 31 to move. Thus, the distance between the axis center line of the adjustment roller 31 and the first coating roller 21 can be adjusted by the pair of adjustable cylinders 32, that is, the distance or contact pressure between the outer peripheral surface of the adjustment roller 31 and the outer peripheral surface of the first coating roller 21 can be adjusted (the adjustment roller 31 and the first coating roller 21 may or may not be in contact), and then the thickness of the coating film layer on the first coating roller 21 can be adjusted.
[0027] Similarly, in order to prevent the adjusting roller 31 from deviating from the predetermined track during movement, the adjusting unit further includes a pair of horizontal slide rails 33 respectively fixedly arranged on a pair of wall panels 11 and a pair of second sliders 34 respectively slidably fitted inside the horizontal slide rails 33. The two side ends of the adjusting roller 31 are respectively rotatably connected to the pair of second sliders 34, and the cylinder shafts 322 of the pair of adjustable cylinders 32 are respectively fixedly connected to the pair of second sliders 34, thereby the adjusting roller 31 can be driven to move horizontally through the pair of adjustable cylinders 32.
[0028] Continue reading Figure 3-Figure 5 The feeding mechanism includes a material barrel 41 installed at a high place, a pair of dripping pipes 42 for applying paint to the first and second paint rollers respectively, a material pool 43 for receiving the paint, and a material pump 44 for conveying the paint.
[0029] The material barrel 41 is fluidically connected to a pair of dripping tubes 42, and each dripping tube 42 is located on the upper side of the corresponding coating roller and the adjusting roller (such as the first coating roller 21 and the adjusting roller 31). Each dripping tube 42 is provided with a plurality of dripping holes, and the coating in the material barrel 41 naturally flows into the pair of dripping tubes 42 under the action of gravity, and then the coating drips onto the corresponding coating roller or / and the adjusting roller and finally forms a coating film layer of the corresponding coating roller. Among them, the coating dripping position is preferably the contact position or the minimum gap between the coating roller and the adjusting roller.
[0030] The material pool 43 is located at the lower side of the first and second coating rollers and the pair of regulating rollers, and is used to receive the coating dripped from the rollers and the substrate. The material pool 43 has a trumpet-shaped top opening that expands outward. The material pool 43, the material pump 44 and the material barrel 41 are connected in sequence to realize the recycling of the coating.
[0031] Furthermore, when the coating device 100 is actually working, if the flow rate of the coating is too large, the coating film formed on the first and second coating rollers will be too thick, and the ability of the regulating roller to regulate the thickness of the coating film will decrease; and if the flow rate of the coating is too small, it will be difficult to form a continuous and stable coating film on the first and second coating rollers, and it may be impossible to form a continuous layer on the surface of the substrate. Therefore, it is necessary to finely adjust the flow rate of the coating.
[0032] In order to solve the above problems, the coating mechanism provided in this embodiment further includes a main pipeline 45 and a pinch valve 46 disposed on the main pipeline 45. The material barrel 41, the main pipeline 45 and a pair of dripping tubes 42 are fluidically connected in sequence. The pinch valve 46 has a squeezing part (not marked in the figure) that can squeeze the main pipeline 45 and a power part (not marked in the figure) that drives the squeezing part to move. The squeezing part controls the flow of the coating in the main pipeline 45 by compressing the main pipeline 45, thereby ensuring that the coating in the main pipeline 45 is pure and is not contaminated by the pinch valve 46.
[0033] The pinch valve 46 is configured to be connected to the material pump 44 by signal and can selectively adjust the opening (i.e., the degree to which the main pipe 45 is squeezed) based on the signal of the material pump 44, thereby finely adjusting the flow of the paint. For example, when the flow of the paint is too large, the amount of paint received by the material pool 43 in the same time will increase, and then the start frequency or working time of the material pump 44 will increase. To this end, the pinch valve 46 can track the real-time signal of the material pump 44 and judge it with the pre-stored signal data to achieve automatic adjustment of the paint flow.
[0034] The above embodiments are only for illustrating the technical concept and features of the present application, and their purpose is to enable people familiar with the technology to understand the content of the present application and implement it accordingly, and they cannot be used to limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit of the present application should be included in the protection scope of the present application.
Claims
1. A coating device that can apply coating on both sides of a substrate, characterized in that: include: frame; A coating mechanism, comprising a pair of coating rollers capable of clamping the substrate from opposite sides, each of the coating rollers being rotatably supported on the frame and extending along the width direction of the substrate, each of the coating rollers having an outer peripheral surface suitable for forming a coating film layer; The thickness adjustment mechanism comprises a pair of adjustment units which can respectively adjust the coating film thickness of the pair of coating rollers, each of the adjustment units comprises an adjustment roller which can approach and move away from the coating roller and a pair of adjustable cylinders for driving the adjustment rollers to move, the adjustment rollers extend along the width direction of the substrate, and the adjustable cylinders can adjust the distance between the axis center lines of the adjustment rollers and the coating rollers; as well as The feeding mechanism comprises a pair of dripping tubes which can respectively provide coatings for a pair of coating rollers. The dripping tubes are provided with a plurality of dripping holes and are located on the upper side of the regulating roller and / or the coating roller.
2. The coating device according to claim 1, characterized in that: The pair of coating rollers includes a first coating roller that can move in a vertical direction, and the coating mechanism also includes a pair of driving cylinders supported on the frame, and the pair of driving cylinders are respectively connected to the two side ends of the first coating roller to drive the first coating roller to move back and forth.
3. The coating device according to claim 2, characterized in that: The coating mechanism also includes a pair of vertical slide rails fixedly arranged on the frame and a pair of first sliders slidably mounted on the pair of vertical slide rails, the two side ends of the first coating roller are rotatably supported on the pair of first sliders, and the cylinder shafts of a pair of driving cylinders are fixedly connected to the pair of first sliders.
4. The coating device according to claim 2, characterized in that: The pair of coating rollers includes a second coating roller detachably mounted on the frame, the coating mechanism also includes deep groove bearings mounted on both side ends of the second coating roller, the frame is provided with a pair of matching grooves respectively adapted to the pair of deep groove bearings and a pair of disassembly and assembly channels respectively connected to the pair of matching grooves, the second coating roller is rotatably supported on the pair of matching grooves via the pair of deep groove bearings, and the disassembly and assembly channels are used for the second coating roller to be loaded into and detached from the frame.
5. The coating device according to claim 4, characterized in that: The disassembly and assembly channel has a guide surface adjacent to the matching groove.
6. The coating device according to claim 1, characterized in that: The coating roller is made of polyurethane and / or polyketone material.
7. The coating device according to claim 1, characterized in that: The material supply system further comprises a material barrel, which is located on the upper side of a pair of dripping tubes and is fluidically connected to the pair of dripping tubes.
8. The coating device according to claim 7, characterized in that: The feeding mechanism further comprises a material pump and a material pool located at the lower side of the pair of coating rollers and the pair of regulating rollers, and the material pool, the material pump and the material barrel are fluidically connected in sequence.
9. The coating device according to claim 8, characterized in that: The feeding mechanism also includes a main pipeline and a clamping valve arranged on the main pipeline. The material barrel, the main pipeline and a pair of drip tubes are fluidically connected in sequence. The clamping valve is connected to the material pump signal and can adjust the opening based on the signal of the material pump.
10. The coating device according to claim 1, characterized in that: The adjustment unit also includes a pair of horizontal slide rails fixedly mounted on the frame and second sliders respectively slidably matched with the pair of horizontal slide rails. The two side ends of the adjustment roller are respectively rotatably supported on the pair of second sliders. The cylinder shafts of a pair of adjustable cylinders are respectively fixedly connected to the pair of second sliders to drive the adjustment roller to move.