Gluing device
By stabilizing the adhesive temperature and output through a heating control system and a piston-type structure, the problem of inconsistent adhesive viscosity and flowability in the coating device was solved, achieving uniformity of optical fiber coating and stability of product quality, thus improving optical performance.
Patent Information
- Application Number
- CN202423247962.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In the process of applying adhesive to optical fibers, existing adhesive coating equipment has difficulty maintaining consistent adhesive viscosity and flowability, which affects the consistency of the coating effect and leads to unstable product quality.
The system employs a heating rod, a temperature sensor, and a controller. The temperature sensor detects the glue temperature and feeds it back to the controller, which controls the heating rod to start and stop, ensuring that the glue temperature remains within a suitable range. The piston-type structure stabilizes the glue output, and the glue outlet tube is designed for easy and quick replacement. The tank uses a double-layer structure or air heating to evenly conduct heat.
It achieves stable control of adhesive temperature, reduces fluctuations in adhesive viscosity and flowability, improves the uniformity of the coating process and the consistency of product quality, reduces bubble problems, and enhances optical performance.
Smart Images
Figure CN223788866U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an optical fiber coating device, specifically to a coating device. Background Technology
[0002] In the optical fiber winding process, adhesive coating is one of the key steps to ensure the stability and mechanical strength of the fiber ring. Currently, widely used adhesive coating equipment mainly includes adjustable automatic adhesive coating devices and adhesive-coated fiber arrangement devices. These devices typically consist of an adhesive coating tank, a right tank body fixedly connected to the tank bottom plate, and a left tank body that can slide along the bottom plate to accommodate optical fibers of different diameters or lengths. Another common design uses two smooth quartz plates as clamps, each with a semi-circular groove in the middle. When the two plates are closed, they form a complete circular cavity for holding the optical fiber. However, in the actual adhesive coating process, it is difficult to maintain consistent adhesive viscosity and flowability, affecting the consistency of the coating effect and making it difficult to guarantee consistent product quality, posing a challenge to mass production. Utility Model Content
[0003] The purpose of this invention is to provide a glue application device, and the technical problem to be solved is how to maintain the viscosity and fluidity of the glue during the glue application process.
[0004] This utility model is achieved through the following technical solution:
[0005] An adhesive coating apparatus is used for coating optical fibers; it includes an adhesive storage tank for storing a medium, which may be a viscous liquid such as glue; the adhesive storage tank is provided with an adhesive outlet, the adhesive outlet is connected to an adhesive outlet tube, and the end of the adhesive outlet tube is provided with an adhesive coating head for contacting the optical fiber and applying the medium to the surface of the optical fiber.
[0006] A heating rod is provided on the side of the aforementioned glue storage tank, and the heating rod is used to heat the glue storage tank.
[0007] The aforementioned storage tank is equipped with a temperature sensor, which is used to detect the temperature of the medium.
[0008] The temperature sensor is connected to a controller, and the output of the controller is connected to the heating rod. The controller is used to control the start and stop of the heating rod according to the medium temperature detected by the temperature sensor.
[0009] A control system comprised of a heating element, a temperature sensor, and a controller maintains the adhesive temperature within the storage tank at a suitable range. The temperature sensor continuously monitors the adhesive temperature in the tank and feeds the data back to the controller, allowing the system to monitor its current operating status in real time. Based on the received temperature information, the controller determines whether to activate or deactivate the heating element, ensuring the adhesive remains within its optimal operating temperature range. This prevents the adhesive from becoming too viscous due to excessive cold, making it difficult to coat evenly, and avoids overflow or sagging due to overheating, which affects the consistency of the coating. Appropriate temperature also helps reduce the dissolved gas content in the adhesive, thereby minimizing potential air bubbles during application and improving coating quality.
[0010] For continuous and multi-batch production, a stable adhesive temperature means that the adhesive properties are almost identical in each coating process, thereby improving the consistency of product quality. Along the entire fiber length, because the adhesive viscosity and flowability remain consistent, a more uniform coating thickness can be achieved, which is particularly important for optical performance.
[0011] Furthermore, the aforementioned rubber storage tank includes a tank body, a piston, and a push rod, with the piston disposed within the tank body;
[0012] One end of the push rod is connected to the piston, and the other end of the push rod extends out of the tank. The push rod is used to push the piston to move axially along the tank.
[0013] By using the aforementioned push rod to move the piston axially along the tank to dispensing the adhesive, the amount of adhesive output can be controlled. When the push rod pushes the piston at a constant speed, it can provide stable pressure throughout the dispensing process, maintaining the uniformity of adhesive flow and avoiding flow fluctuations. Compared to traditional pumping methods, the piston structure generates more stable pressure, reducing uneven adhesive application caused by pressure pulsation.
[0014] Furthermore, the piston is equipped with a sealing ring that contacts the inner wall of the tank.
[0015] The aforementioned sealing ring fits tightly against the inner wall of the tank, which not only effectively prevents glue from leaking from the gap between the piston and the tank, but also maintains the internal pressure of the tank.
[0016] Furthermore, an insertion hole is provided next to the glue outlet of the aforementioned glue storage tank, and the aforementioned glue dispensing tube is inserted into the insertion hole and communicates with the glue outlet.
[0017] The aforementioned dispensing tube is directly inserted into the socket, making the connection simple and quick, facilitating rapid assembly and disassembly, and improving the efficiency of equipment maintenance and component replacement. If it is necessary to replace the dispensing tube with a different specification or type, simply pull out the old tube and insert the new tube; no complicated tools or adjustments are required, thus improving the maintainability of the system.
[0018] Furthermore, the heating rod is in contact with the tank; the tank includes an inner shell and an outer shell, and liquid is filled between the inner shell and the outer shell.
[0019] When the heating rod is in direct contact with the can, the can is designed as a double-layer structure and filled with liquid. Heat is evenly conducted into the can through the liquid, so as to achieve uniform heating of the glue and avoid uneven heating, local overheating or undercooling of the glue.
[0020] Furthermore, a gap is left between the heating rod and the tank.
[0021] The tank is heated indirectly by air, so that the tank is heated evenly.
[0022] Furthermore, the aforementioned temperature sensor is positioned near the dispensing port.
[0023] Since the glue at the outlet is the part that most closely resembles the actual application environment, the temperature data here is more likely to reflect real working conditions.
[0024] Furthermore, the aforementioned glue storage tank is also equipped with a glue inlet, which is equipped with a valve that is normally closed.
[0025] The glue is replenished through the aforementioned injection port. This valve is normally closed to prevent air from entering the tank and causing the glue to oxidize.
[0026] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0027] A control system comprised of a heating element, a temperature sensor, and a controller maintains the adhesive temperature within the storage tank at a suitable range. The temperature sensor continuously monitors the adhesive temperature in the tank and feeds the data back to the controller, allowing the system to monitor its current operating status in real time. Based on the received temperature information, the controller determines whether to activate or deactivate the heating element, ensuring the adhesive remains within its optimal operating temperature range. This prevents the adhesive from becoming too viscous due to excessive cold, making it difficult to coat evenly, and avoids overflow or sagging due to overheating, which affects the consistency of the coating. Appropriate temperature also helps reduce the dissolved gas content in the adhesive, thereby minimizing potential air bubbles during application and improving coating quality. Attached Figure Description
[0028] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:
[0029] Figure 1This is a schematic diagram of the overall structure of the adhesive application device;
[0030] Figure 2 This is a schematic diagram showing the position of the glue storage tank when the heating rod is not in contact with the heating rod.
[0031] Figure 3 Schematic diagram of the external structure of the rubber storage tank
[0032] Figure 4 This is a cross-sectional view of the glue storage tank when it is in contact with the heating rod.
[0033] The attached diagram shows the markings and corresponding component names:
[0034] 10. Glue storage tank; 11. Glue inlet; 12. Glue outlet; 13. Insertion hole; 14. Valve; 15. Piston; 16. Push rod; 17. Sealing ring; 18. Inner shell; 19. Outer shell; 20. Glue outlet tube; 21. Glue applicator head; 30. Heating rod; 40. Temperature sensor. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.
[0036] First embodiment:
[0037] Combination Figures 1 to 3 A glue-coating device is disclosed for coating optical fibers. Since the optical fiber needs to constantly change position during winding, the glue-coating device can be mounted on a moving mechanism to follow the real-time position changes of the optical fiber. The glue-coating device includes a glue storage tank 10 for storing glue. The glue storage tank 10 is provided with a glue outlet 12 and a glue injection port 11. The glue injection port 11 is equipped with a valve 14 (which can be a one-way valve) for replenishing glue through the glue injection port 11. The valve 14 is normally closed to prevent air from entering the tank. This leads to the oxidation of the adhesive. The adhesive outlet 12 is connected to an adhesive outlet tube 20. The end of the adhesive outlet tube 20 is provided with an adhesive applicator 21. The adhesive applicator 21 is used to contact the optical fiber and apply the adhesive to the surface of the optical fiber. The adhesive applicator 21 can be an adhesive tank. The bottom of the adhesive tank is provided with several small holes. The adhesive in the adhesive outlet tube 20 is output from the small holes and accumulates in the adhesive tank. A fine brush is installed in the adhesive tank. The adhesive accumulated in the adhesive tank sticks to the fine brush. As the optical fiber extends forward, it passes through the fine brush to ensure that the adhesive on the optical fiber is evenly applied.
[0038] A heating rod 30 is provided on the side of the aforementioned glue storage tank 10, and the heating rod 30 is used to heat the glue storage tank 10.
[0039] The above-mentioned glue storage tank 10 is equipped with a temperature sensor 40 (PT100, PT1000, MF58, MF52, etc., not shown in the figure). The temperature sensor 40 is used to detect the glue temperature. Since the glue at the glue outlet 12 is the part that is closest to the actual application environment, the temperature sensor 40 is placed near the glue outlet 12, and the temperature data here can better reflect the real working conditions.
[0040] The temperature sensor 40 is connected to a controller (which may be a microcontroller, PLC, comparator, etc., not shown in the figure), and the output of the controller is connected to the heating rod 30. The controller is used to control the heating rod 30 to start and stop according to the glue temperature detected by the temperature sensor 40.
[0041] A control system consisting of a heating rod 30, a temperature sensor 40, and a controller maintains the adhesive temperature in the storage tank 10 within a suitable range. The temperature sensor 40 continuously monitors the adhesive temperature in the storage tank 10 and feeds the data back to the controller, allowing the system to understand its current operating status in real time. Based on the received temperature information, the controller decides whether to start or stop the heating rod 30, ensuring that the adhesive is always within the optimal operating temperature range. This prevents the adhesive from becoming too viscous due to excessive cold, making it difficult to coat evenly, and avoids overflow or dripping due to overheating, which affects the consistency of the coating effect. Appropriate temperature also helps reduce the dissolved gas content in the adhesive, thereby reducing the possibility of air bubbles during the coating process and improving the coating quality.
[0042] When the ambient temperature fluctuates, the device reacts quickly, adjusting the heating intensity to maintain a consistent internal temperature. This means that stable adhesive application results can be achieved even in different seasons or locations. Since different types of adhesives have different optimal operating temperature ranges, parameters can be set according to the specific type of adhesive used to meet specific needs and expand the equipment's application range.
[0043] For continuous and multi-batch production, a stable adhesive temperature means that the adhesive properties are almost identical in each coating process, thereby improving the consistency of product quality. Along the entire fiber length, because the adhesive viscosity and flowability remain consistent, a more uniform coating thickness can be achieved, which is particularly important for optical performance.
[0044] Second embodiment:
[0045] Based on the first embodiment, combined with Figure 4 The aforementioned rubber storage tank 10 includes a tank body, a piston 15, and a push rod 16, with the piston 15 disposed inside the tank body;
[0046] One end of the push rod 16 is connected to the piston 15, and the other end of the push rod 16 extends out of the tank. The push rod 16 is used to push the piston 15 to move along the axial direction of the tank.
[0047] By pushing the piston 15 along the axial direction of the tank using the push rod 16, the amount of glue output can be controlled. When the push rod 16 pushes the piston 15 at a constant speed, it can provide stable pressure throughout the glue dispensing process, maintaining the uniformity of glue flow and avoiding flow fluctuations. Compared with traditional pumping methods, the piston 15 structure generates more stable pressure, reducing uneven glue application caused by pressure pulsation.
[0048] The push rod 16 can be controlled manually or by connecting to an electric motor, hydraulic cylinder, etc. If an electric push rod 16 is used, it can be controlled and programmed via a PLC, combined with sensor technology (such as a linear encoder) to monitor the position changes of the push rod 16 in real time, thereby knowing the amount of glue remaining in the tank and facilitating timely replenishment of glue.
[0049] In a specific embodiment, the piston 15 is provided with a sealing ring 17, which contacts the inner wall of the tank. The sealing ring 17 can be made of a corrosion-resistant, wear-resistant material with self-lubricating properties (such as polytetrafluoroethylene PTFE, silicone rubber, etc.), which can reduce friction and reduce wear rate in frequent reciprocating motion.
[0050] The aforementioned sealing ring 17 fits tightly against the inner wall of the tank, effectively preventing glue leakage from the gap between the piston 15 and the tank, and maintaining the internal pressure of the tank. By reducing direct friction between the piston 15 and the inner wall of the tank, the sealing ring 17 protects these two critical components from damage, thereby extending the service life of the entire glue storage tank 10.
[0051] Third embodiment:
[0052] Based on any of the above embodiments, combined with Figure 3 and Figure 4 The glue storage tank 10 has an insertion hole 13 on the side of the glue outlet 12, and the glue outlet tube 20 is inserted into the insertion hole 13 to communicate with the glue outlet 12.
[0053] The aforementioned dispensing tube 20 is directly inserted into the socket 13, making the connection simple and quick, facilitating rapid assembly and disassembly, and improving the efficiency of equipment maintenance and component replacement. If it is necessary to replace the dispensing tube 20 with a different specification or type, simply pull out the old tube and insert the new tube without complicated tools or adjustments, thus improving the maintainability of the system.
[0054] Fourth embodiment:
[0055] Based on any of the above embodiments, the heating rod 30 is in contact with the tank; the tank includes an inner shell 18 and an outer shell 19, and the space between the inner shell 18 and the outer shell 19 is filled with liquid, which may be water, such as... Figure 4 As shown; the outer shell 19 provides physical protection; the liquid filling layer serves as a heat conduction medium; the inner shell 18 is in direct contact with the adhesive and is responsible for carrying and transferring the adhesive.
[0056] Alternatively, a gap may be left between the heating rod 30 and the tank body, such as... Figure 2 As shown, the tank is heated indirectly by air, so that the tank is heated evenly.
[0057] When the heating rod 30 is in direct contact with the tank, although it can efficiently transfer heat to the adhesive inside the storage tank 10, the adhesive is heated unevenly. Therefore, the tank is designed with a double-layer structure and filled with liquid. The liquid can buffer the impact of external temperature fluctuations on the interior of the storage tank 10, maintaining a relatively stable temperature environment inside the tank, which helps to maintain the viscosity and fluidity of the adhesive. Heat is evenly conducted to the tank through the liquid, achieving uniform heating of the adhesive and avoiding uneven heating, local overheating or undercooling.
[0058] When the heating rod 30 is not in direct contact with the can, the can can be indirectly heated by air, and the heat can be evenly transferred to the glue through the can, so that the glue is heated evenly.
[0059] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A glue applying device for applying glue to an optical fiber; characterized by, The application relates to a glue storage tank (10) for storing medium; the glue storage tank (10) is provided with a glue outlet (12) connected with a glue outlet pipe (20), and the end of the glue outlet pipe (20) is provided with a glue applying head (21) for contacting an optical fiber and applying medium to the surface of the optical fiber. A heating rod (30) is arranged beside the glue storage tank (10) and used for heating the glue storage tank (10). A temperature sensor (40) is arranged in the glue storage tank (10) and used for detecting the temperature of the medium. The temperature sensor (40) is connected with a controller, and the output end of the controller is connected with the heating rod (30); the controller is used for controlling the start and stop of the heating rod (30) according to the medium temperature detected by the temperature sensor (40).
2. The gluing apparatus according to claim 1, wherein The glue storage tank (10) comprises a tank body, a piston (15) and a push rod (16), and the piston (15) is arranged in the tank body. One end of the push rod (16) is connected with the piston (15), and the other end of the push rod (16) extends out of the tank body; the push rod (16) is used for pushing the piston (15) to move axially along the tank body.
3. The gluing apparatus according to claim 2, wherein The piston (15) is provided with a sealing ring (17) in contact with the inner wall of the tank body.
4. The gluing apparatus according to claim 1, wherein A plug hole (13) is arranged beside the glue outlet (12) of the glue storage tank (10), and the glue outlet pipe (20) is inserted into the plug hole (13) and communicates with the glue outlet (12).
5. The gluing apparatus according to claim 1, wherein The heating rod (30) is in contact with the tank body; the tank body comprises an inner shell (18) and an outer shell (19), and the inner shell (18) is filled with liquid and separated from the outer shell (19).
6. The gluing apparatus according to claim 1, wherein The heating rod (30) is spaced apart from the tank body.
7. The gluing apparatus according to claim 1, wherein The temperature sensor (40) is arranged close to the glue outlet (12).
8. The gluing apparatus according to claim 1, wherein The glue storage tank (10) is further provided with a glue injection port (11) provided with a valve (14) which is normally closed.