Coating film coating device

Abstract

The utility model relates to the technical field of optical fiber coatings, and provides a coating film coating device which comprises a conveying mechanism, a lifting mechanism and a film coating device, and the conveying mechanism is used for bearing and conveying a mold; the lifting mechanism is arranged beside the conveying mechanism and comprises a lifting table, and the lifting table is arranged above the conveying mechanism; the film coating device is provided with a coating end and a fixed end which are oppositely arranged, the fixed end is fixed on the lifting platform, and the coating end is pressed on the mold; a winding bar and a scraping piece are arranged at the bottom of the film coating device and located at the coating end, the winding bar is located on the side, close to the fixed end, of the scraping piece, and a discharging gap is formed between the scraping piece and the winding bar; wherein the film coater is pressed on the mold through the lifting mechanism, the conveying mechanism drives the mold to move for film coating, meanwhile, paint overflows through the discharging gap and is scraped and coated through the scraper, so that a coating is formed on the surface of the mold, bubbles are prevented from being generated in the coating process of the coating, the coating is more uniform, and the coating quality of the coating is improved.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber coating technology, and in particular to a coating device. Background Technology

[0002] In the production and research and development of optical fibers, the performance evaluation of fiber coatings plays a crucial role. Coatings not only provide necessary protection and support for the optical fiber, but also directly affect key characteristics such as the fiber's mechanical properties, hardness, refractive index, transmittance, and adhesion between the coating and the fiber substrate. Among these, the coating process is a core preparatory step before performance testing, and the quality of the coating directly determines the accuracy and reliability of the performance test results after the coating has cured.

[0003] However, in practice, the coating process faces numerous challenges. On one hand, coating quality is influenced by various factors, including but not limited to bubble formation, coating uniformity, the applied pressure, and the amount of paint used. These factors intertwine and work together to affect the final coating effect; any malfunction can lead to a significant decline in coating performance. On the other hand, existing coating equipment generally suffers from complex structures, large size, and high costs, increasing both the difficulty and cost of production operations, and often failing to achieve ideal coating results in practical applications. Some simple coating methods, such as directly pouring paint and applying it with a wire rod or scraper, while convenient, struggle to guarantee coating quality, exhibiting poor uniformity and consistency, severely impacting the accuracy and repeatability of coating test results. More critically, neither advanced coating equipment nor traditional coating tools have effectively solved the problem of bubble formation during the coating process.

[0004] Therefore, it is necessary to provide a new technical solution to solve the above-mentioned technical problems. Utility Model Content

[0005] The present invention aims to provide a coating device with simple structure, convenient operation and excellent coating quality, which can not only significantly improve the overall performance of the coating, but also reduce production costs and improve production efficiency.

[0006] This utility model provides a coating / film application device, comprising:

[0007] The conveying mechanism is used to carry and transport the mold;

[0008] A lifting mechanism is provided on the side of the conveying mechanism, including a lifting platform, which is provided above the conveying mechanism;

[0009] The coating applicator has a coating end and a fixed end, the fixed end is fixed to the lifting platform, and the coating end is attached to the mold; the bottom of the coating applicator is provided with a wire bar and a scraper, the wire bar and the scraper are located at the coating end, the wire bar is located at the side of the scraper close to the fixed end, and a discharging gap is formed between the scraper and the wire bar.

[0010] The coating applicator is attached to the mold through the lifting mechanism, the mold is moved by the conveying mechanism to perform coating, coating is overflowed through the discharging gap and scraped by the scraper to form a coating on the surface of the mold.

[0011] According to the coating and film coating device, the coating applicator further comprises a material collecting chamber, a discharging chamber and a feeding pipe, one end of the feeding pipe is communicated with the material collecting chamber, the other end of the feeding pipe is communicated with a coating tank, and the discharging gap is communicated with the material collecting chamber through the discharging chamber.

[0012] According to the coating and film coating device, the coating applicator further comprises a support plate, the discharging chamber is arranged in a slope manner at a preset angle, the support plate is flush with the bottom of the material collecting chamber, one end of the support plate is connected with the bottom of the material collecting chamber, and the other end of the support plate is connected with the middle part of the lower slope of the discharging chamber.

[0013] According to the coating and film coating device, the conveying mechanism comprises a first conveying belt and a second conveying belt which are oppositely arranged along the conveying direction, the first conveying belt and the second conveying belt are located at the same height, and the first conveying belt and the second conveying belt have a first gap therebetween, and the discharging gap is arranged corresponding to the first gap.

[0014] According to the coating and film coating device, a recycling box is further arranged corresponding to the first gap, and the excess coating scraped by the scraper flows out from both sides of the mold and flows into the recycling box through the first gap.

[0015] According to the coating and film coating device, the first conveying belt is provided with a limiting plate on both sides perpendicular to the conveying direction, the limiting plate extends to the first gap along the conveying direction, the first guide wheel and the second guide wheel are rotatably connected to the limiting plate, the first guide wheel and the second guide wheel are arranged at the first gap along the conveying direction, and the axial directions of the first guide wheel and the second guide wheel are perpendicular to the conveying direction, and the mold is conveyed to the second conveying belt through the first guide wheel and the second guide wheel.

[0016] The coating and film coating device has the advantages that the first guide wheel and the second guide wheel are provided with the second gap, the discharge gap is arranged corresponding to the second gap, the limiting plate is provided with the recycling guide opening corresponding to the second gap, the recycling box is located below the recycling guide opening, and the excess coating flows into the recycling box through the recycling guide opening and the second gap.

[0017] The coating and film coating device has the advantages that the first guide wheel and the second guide wheel are provided with the second gap, the discharge gap is arranged corresponding to the second gap, the limiting plate is provided with the recycling guide opening corresponding to the second gap, the recycling box is located below the recycling guide opening, and the excess coating flows into the recycling box through the recycling guide opening and the second gap.

[0018] The coating and film coating device has the advantages that the first guide wheel and the second guide wheel are provided with the second gap, the discharge gap is arranged corresponding to the second gap, the limiting plate is provided with the recycling guide opening corresponding to the second gap, the recycling box is located below the recycling guide opening, and the excess coating flows into the recycling box through the recycling guide opening and the second gap.

[0019] The coating and film coating device has the advantages that the first guide wheel and the second guide wheel are provided with the second gap, the discharge gap is arranged corresponding to the second gap, the limiting plate is provided with the recycling guide opening corresponding to the second gap, the recycling box is located below the recycling guide opening, and the excess coating flows into the recycling box through the recycling guide opening and the second gap.

[0020] The coating and film coating device has the advantages that the first guide wheel and the second guide wheel are provided with the second gap, the discharge gap is arranged corresponding to the second gap, the limiting plate is provided with the recycling guide opening corresponding to the second gap, the recycling box is located below the recycling guide opening, and the excess coating flows into the recycling box through the recycling guide opening and the second gap.

[0021] The coating and film coating device has the advantages that the first guide wheel and the second guide wheel are provided with the second gap, the discharge gap is arranged corresponding to the second gap, the limiting plate is provided with the recycling guide opening corresponding to the second gap, the recycling box is located below the recycling guide opening, and the excess coating flows into the recycling box through the recycling guide opening and the second gap. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will be a simple introduction to the drawings needed to be used in the embodiment or the prior art description, and obviously, the following description of the drawings is some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.

[0023] Figure 1 The structure diagram of the coating and film coating device provided by the embodiment of the utility model is shown in the figure.

[0024] Figure 2 The partial structure top view of the coating and film coating device provided by the embodiment of the utility model is shown in the figure. The coating and film coating device has the advantages that the first guide wheel and the second guide wheel are provided with the second gap, the discharge gap is arranged corresponding to the second gap, the limiting plate is provided with the recycling guide opening corresponding to the second gap, the recycling box is located below the recycling guide opening, and the excess coating flows into the recycling box through the recycling guide opening and the second gap.

[0025] Figure 3 The structure schematic view of the film applicator of the coating and film coating device is provided for the embodiment of the utility model;

[0026] Figure 4 The sectional view of the film applicator of the coating and film coating device is provided for the embodiment of the utility model;

[0027] Figure 5 The top view of the film applicator of the coating and film coating device is provided for the embodiment of the utility model;

[0028] Figure 6 The right view of the film applicator of the coating and film coating device is provided for the embodiment of the utility model.

[0029] Reference signs:

[0030] 1, first conveying belt; 2, second conveying belt; 3, limiting plate; 4, first guide wheel; 5, second guide wheel; 6, recovery guide opening; 7, recovery box; 8, lifting platform; 9, film applicator; 10, mold; 11, feeding guide pipe; 12, wire bar; 13, scraper; 14, material collecting chamber; 15, discharging chamber; 16, supporting plate; 17, base. DETAILED DESCRIPTION

[0031] To make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model will be described clearly and completely below in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] Referring to Figures 1-3 The utility model provides a kind of coating and film coating device for coating coating on mold, it includes base 17, conveying mechanism, lifting mechanism and film applicator 9, conveying mechanism and lifting mechanism are all fixed on base 17, conveying mechanism is used to carry and transport mold 10, lifting mechanism is arranged in the side of conveying mechanism, and lifting mechanism includes lifting platform 8, and lifting platform 8 is arranged above conveying mechanism. Film applicator 9 has oppositely arranged coating end and fixed end, and fixed end is fixed on lifting platform 8, and coating end is attached to press on mold 10. The bottom of film applicator 9 is equipped with wire bar 12 and scraper 13, and wire bar 12 and scraper 13 are all located in coating end, and wire bar 12 is located in the side of scraper 13 close to fixed end, and discharge gap is formed between scraper 13 and wire bar 12.

[0033] The coating film applicator 9 is attached to the mold 10 by the lifting mechanism, and the conveying mechanism can drive the mold 10 to move along the conveying direction to perform the coating process. During the coating process, the coating material overflowing from the discharge gap is scraped by the scraper 13 to form a coating layer on the surface of the mold 10. The coating film device can perform pressure coating and scraping at the same time, which can avoid the generation of bubbles during the coating process, make the coating more uniform, solve the problems of bubbles and unevenness in the coating process, and improve the comprehensive performance of the coating.

[0034] As shown in Figure 1 , specifically, the conveying mechanism includes a first conveying belt 1 and a second conveying belt 2 arranged opposite to each other along the conveying direction. The two ends of the first conveying belt 1 and the second conveying belt 2 are connected to the base 17 through the rotating shaft and the conveying mechanism support. The first conveying belt 1 and the second conveying belt 2 are located at the same height, have the same conveying direction, and have a first gap between them. The mold 10 can be conveyed from the first conveying belt 1 to the second conveying belt 2.

[0035] The lifting mechanism includes a lifting platform 8 and a lifting mechanism support. The lifting mechanism support is located on the opposite sides of the conveying mechanism, and one end of the lifting mechanism support is fixed on the base 17. The lifting platform 8 is slidingly arranged on the lifting mechanism support. The fixed end of the coating film applicator 9 is fixed on the lifting platform 8. By adjusting the height of the lifting platform 8, the contact pressure between the coating material end of the coating film applicator 9 and the mold 10 can be adjusted.

[0036] The lifting mechanism is arranged corresponding to the first conveying belt 1. When the coating film applicator 9 is fixed on the lifting platform 8, the discharge gap of the coating film applicator 9 is arranged corresponding to the first gap. The coating film device further includes a recycling box 7 arranged corresponding to the first gap. During the scraping process of the scraper 13, the excess coating material scraped by the scraper 13 flows out from both sides of the mold 10 and flows into the recycling box 7 below through the first gap, realizing the recycling of the excess coating material during the coating process and avoiding waste and pollution.

[0037] As shown in Figure 2 and Figure 3 , the width of the coating film applicator 9 is slightly greater than or equal to the width of the mold 10. The wire rod 12 and the scraper 13 penetrate through the entire coating film applicator 9 along the width direction of the coating film applicator 9, ensuring uniform coating of the mold 10.

[0038] Referring to Figure 1 and Figure 2The first conveying belt 1 is provided with limiting plates 3 on both sides perpendicular to the conveying direction, the limiting plates 3 are connected with the base 17 through limiting plate supports, the limiting plates 3 extend to the first gap in the conveying direction, the first conveying belt 1 is not connected with the limiting plates 3, and the limiting plates 3 are used for guiding and limiting the conveying of the mold 10. The first guide wheel 4 and the second guide wheel 5 are rotatably connected to the limiting plates 3, the first guide wheel 4 and the second guide wheel 5 are arranged at the first gap in the conveying direction, and the axial directions of the first guide wheel 4 and the second guide wheel 5 are perpendicular to the conveying direction, the mold 10 is conveyed to the second conveying belt 2 through the first guide wheel 4 and the second guide wheel 5, and the first guide wheel 4 and the second guide wheel 5 arranged at the first gap can guide the mold 10 to smoothly transition between the first conveying belt 1 and the second conveying belt 2.

[0039] The second gap is arranged between the first guide wheel 4 and the second guide wheel 5, the discharge gap is arranged corresponding to the second gap, the limiting plate 3 is provided with a recovery guide opening 6 corresponding to the second gap, and the recovery box 7 is arranged below the recovery guide opening 6, and the excess coating flows into the recovery box 7 through the recovery guide opening 6 and the second gap.

[0040] The diameters of the first guide wheel 4 and the second guide wheel 5 are the same, the centers of the rotating shafts of the first guide wheel 4 and the second guide wheel 5 are apart by 1.1-1.5 times the diameter of the guide wheel, and the first guide wheel 4, the second guide wheel 5, the first conveying belt 1 and the second conveying belt 2 are arranged at the same height. The first guide wheel 4 is arranged on the side of the second guide wheel 5 close to the first conveying belt 1, the first guide wheel 4 is arranged apart from the first conveying belt 1, and the second guide wheel 5 is arranged apart from the second conveying belt 2.

[0041] Referring to Figures 3-6 The film applicator 9 comprises a feeding pipe 11, a wire bar 12, a doctor blade 13, a material collecting chamber 14, a material discharging chamber 15 and a support plate 16. One end of the feeding pipe 11 is in communication with the material collecting chamber 14, the other end of the feeding pipe 11 is in communication with a coating tank, and the discharge gap is in communication with the material collecting chamber 14 through the material discharging chamber 15. The material discharging chamber 15 is of a sandwich structure and is arranged in a slope with a preset angle. The support plate 16 is flush with the bottom of the material collecting chamber 14, one end of the support plate 16 is connected with the bottom of the material collecting chamber 14, and the other end of the support plate 16 is connected with the middle of the lower slope of the material discharging chamber 15, so that the coating end and the fixed end of the film applicator 9 form a certain height difference in the thickness direction of the film applicator 9, so that the wire bar 12 and the doctor blade 13 of the film applicator 9 are attached to the surface of the mold 10, and other parts of the film applicator 9 are not in contact with the surface of the mold 10, thereby avoiding unnecessary scratches on the surface of the mold 10 during the film coating process.

[0042] The width of the discharge gap of the film applicator 9 is 0.1 mm-2 mm, and the width of the discharge gap can be 0.1 mm, 0.5 mm, 1 mm, 1.5 mm or 2 mm.

[0043] With reference to the above Figures 1-3 In the coating process, the paint in the paint tank is driven by air pressure to enter the material collecting chamber 14 through the feeding pipe 11, and after the material collecting chamber 14 is full, it is overflowed to the discharge gap between the wire rod 12 and the scraper 13 through the discharge chamber 15, and after the paint is smoothly overflowed under pressure, the first conveying belt 1 is started to drive the mold 10 to move, and the mold 10 is limited and guided to the first guide wheel 4 and the second guide wheel 5 by the limiting plate 3, and the paint is coated in the discharge gap between the wire rod 12 and the scraper 13, and in the process of moving the mold 10, the excess paint is scraped by the scraper 13, and the excess paint flows into the recovery box 7 through the recovery guide 6 and the second gap between the first guide wheel 4 and the second guide wheel 5 for recovery, and after the coating is completed, the mold 10 is conveyed to the designated position by the second conveying belt 2.

[0044] The coating film device of the utility model, through adjusting the height of the lifting platform, realized the adjustment of the contact pressure of the wire rod and the scraper of the coating film device and the mold, thereby coating under pressure, and scraping with the scraper while coating, avoided the generation of bubbles in the coating process, made the coating film more uniform, solved the bubble problem and the uneven problem of the coating film. In addition, the utility model can also control the coating speed by adjusting the feeding air pressure of the paint tank and / or the conveying speed of the conveying mechanism, and when the mold that can be connected is selected, the multi-speed continuous coating of the coating film can be carried out, the production cost is reduced, and the production efficiency is improved. In addition, the utility model designs a recovery part, realizes the recycling of excess paint in the coating process, and avoids waste and pollution. The coating film device of the utility model has simple overall structure, convenient operation and easy cleaning, and is suitable for popularization and use.

[0045] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A coating film forming apparatus characterized by comprising: The coating device comprises: a conveying mechanism for carrying and conveying the mold; a lifting mechanism arranged beside the conveying mechanism, comprising a lifting platform arranged above the conveying mechanism; a coating applicator having a coating end and a fixed end arranged oppositely, the fixed end being fixed to the lifting platform, and the coating end being attached to the mold; the bottom of the coating applicator is provided with a wire bar and a doctor blade, both of which are located at the coating end, and the wire bar is located at the side of the doctor blade close to the fixed end, and a discharge gap is formed between the wire bar and the doctor blade; wherein the coating applicator is attached to the mold by the lifting mechanism, and the mold is moved by the conveying mechanism to perform coating, while the coating material overflows through the discharge gap and is coated by the doctor blade to form a coating layer on the surface of the mold.

2. The coating film forming apparatus according to claim 1, wherein The coating device further comprises a material collecting chamber, a discharge chamber and a feeding conduit, one end of the feeding conduit being in communication with the material collecting chamber, the other end of the feeding conduit being in communication with a coating tank, and the discharge gap being in communication with the material collecting chamber through the discharge chamber.

3. The coating film forming apparatus according to claim 2, wherein The coating device further comprises a support plate, the discharge chamber is arranged in a slope with a preset angle, the support plate is flush with the bottom of the material collecting chamber, one end of the support plate is connected to the bottom of the material collecting chamber, and the other end of the support plate is connected to the middle of the lower slope of the discharge chamber.

4. The coating film forming apparatus according to claim 1, wherein The conveying mechanism comprises a first conveying belt and a second conveying belt arranged oppositely along the conveying direction, the first conveying belt and the second conveying belt are located at the same height, and the first conveying belt and the second conveying belt have a first gap therebetween, and the discharge gap is arranged corresponding to the first gap.

5. The coating film forming apparatus according to claim 4, wherein A recovery box is further arranged corresponding to the first gap, and the excess coating material after being coated by the doctor blade flows out from both sides of the mold and flows into the recovery box through the first gap.

6. The coating film forming apparatus according to claim 5, wherein Limiting plates are arranged on both sides of the first conveying belt perpendicular to the conveying direction, the limiting plates extend to the first gap along the conveying direction, first and second guide wheels are rotatably connected to the limiting plates, the first and second guide wheels are arranged at the first gap along the conveying direction, and the axial directions of the first and second guide wheels are perpendicular to the conveying direction, and the mold is conveyed to the second conveying belt through the first and second guide wheels.

7. The coating film forming apparatus according to claim 6, wherein The first and second guide wheels have a second gap therebetween, the discharge gap is arranged corresponding to the second gap, the limiting plates are provided with recovery guide openings corresponding to the second gap, and the recovery box is arranged below the recovery guide openings, and the excess coating material flows into the recovery box through the recovery guide openings and the second gap.

8. The coating film forming apparatus according to claim 7, wherein The diameters of the first and second guide wheels are the same, and the first guide wheel, the second guide wheel, the first conveying belt and the second conveying belt are located at the same height.

9. The coating film forming apparatus according to claim 6, wherein The first guide wheel is located at the side of the second guide wheel close to the first conveying belt, the first guide wheel is arranged separately from the first conveying belt, and the second guide wheel is arranged separately from the second conveying belt.

10. The coating film forming apparatus according to claim 1, wherein The width of the discharge gap is in the range of 0.1 mm to 2 mm. The width of the discharge gap is in the range of 0.1 mm to 2 mm.

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