Atmosphere data sensor inner cavity heating wire soldering paste coating visualization device and method

Abstract

The invention discloses an atmosphere data sensor inner cavity heating wire soldering paste coating visualization device and method, and relates to the technical field of aerospace processing and manufacturing. In order to solve the problems that in the prior art, due to manual operation, the using amount of soldering paste is uncontrollable, and the coating process is unobservable, the following technical scheme is provided: the visual device for coating the heating wire soldering paste in the inner cavity of the atmosphere data sensor comprises an adjustable needle tube, a miniature endoscope and a rapid fixing device. The adjustable needle tube can control the output of the soldering paste by rotating the adjusting nut; the miniature endoscope is used for observing the coating state of the inner cavity in real time. When the visual coating device is used, the needle tube and the endoscope are fixed through the rapid fixing device and then placed into an inner cavity of the sensor, an operator controls the terminal to observe through the miniature endoscope, and visual coating is achieved. By combining soldering paste coating and visual observation, the problems that the using amount of soldering paste cannot be accurately controlled and the coating state is invisible are effectively solved, and therefore the coating quality and the heating efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aerospace processing and manufacturing, and in particular to a device and method for visualizing solder paste coating on a heating wire in an inner cavity of an atmospheric data sensor. Background Art

[0002] To protect air data sensors from low temperatures during flight, heating components are crucial for flight safety. Currently, heating components for air data sensors are categorized into three main types: electric heating, pneumatic heating, and novel heating technologies. Electric heating can be further subdivided into resistance wire heating, PTC ceramic heating, and carbon fiber heating. Resistance wire heating is widely used due to its low cost and mature technology. However, securing the resistance wire inside the pitot tube, ensuring good contact and conductivity, and allowing heat to be transferred to the outside of the pitot tube with minimal loss, remains a key challenge.

[0003] Currently, the heating wire is secured to the sensor cavity through soldering. Operators typically use a thin rod and specially formulated solder paste to manually fill the gap between the wire and the pitot tube wall and secure it to ensure the heating temperature is effectively transmitted to the pitot tube. However, due to the confined and long working space inside the pitot tube, manual solder paste application presents several challenges. First, using a thin rod prevents precise control of solder paste application, resulting in uneven coating thickness. Second, operators face blind spots, making it impossible to verify that the solder paste is evenly applied between the heating wire and the pitot tube wall, or to ensure complete coverage. These uncontrollable factors can lead to reduced heating efficiency of the resistance wire, or even the scrapping of the resistance wire, resulting in financial losses. Summary of the Invention

[0004] The purpose of the present invention is to provide a device and method for visualizing solder paste coating on the heating wire in the inner cavity of an atmospheric data sensor, so as to solve the problems in the prior art of using ordinary thin rods for manual coating, resulting in uncontrollable solder paste dosage and blind spots in the coating process that cannot be observed.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: An atmospheric data sensor cavity heating wire solder paste coating visualization device includes an adjustable needle tube, which includes a needle shell, a sealing ring, an adjusting nut, and an inner core; a miniature endoscope, a solder paste delivery tube, a miniature endoscope control terminal, a solder paste storage barrel, and a quick fixing device, which includes a shell and a rubber gasket; Among them, a groove is provided on the outside of the needle shell to ensure that the relative position of the microendoscope and the adjustable needle tube is fixed each time the microendoscope is clamped; the microendoscope has the function of zooming in and out; the shell of the quick fixing device is a single-sided cantilever buckle, which is used to quickly fix the adjustable needle tube and the microendoscope; the inner wall of the shell is provided with a groove for fixing the rubber gasket.

[0006] Furthermore, the adjustable needle tube, the microendoscope and the quick fixing device are all provided with grooves to ensure that the relative positions of the adjustable needle tube and the microendoscope are fixed.

[0007] Furthermore, the needle tip of the needle housing is in a retracted shape.

[0008] Furthermore, the inner core is a pointed long metal rod, the end of which is hollow and connected to the front through hole.

[0009] Furthermore, the outer diameter of the inner core needle tip ring is consistent with the inner diameter of the needle tip of the needle shell.

[0010] Furthermore, the front end of the adjusting nut is threaded, and the rear end fixes the inner core.

[0011] The method for using the device for visualizing solder paste coating of an inner cavity heating wire of an atmospheric data sensor comprises the following steps: S1: Fix the adjustable needle and microendoscope with a quick fixing device; S2: Before applying solder paste, the operator connects the solder paste delivery tube to the inner core; rotates the adjustment nut to control the position of the inner core, thereby controlling the amount of solder paste output; S3: After the adjustment is completed, the fixed device is placed into the inner cavity of the atmospheric data sensor; S4: The operator holds the rear end of the adjustable needle and adjusts the solder paste outlet. During the coating process, the operator observes the solder paste coating status of the sensor cavity through the miniature endoscope control terminal.

[0012] Furthermore, the specific adjustment method for the solder paste output in S2 is to rotate the adjustment nut to move the inner core up and down, thereby changing the gap between the inner core needle tip and the needle tip of the needle shell to adjust the solder paste output.

[0013] The present invention has the following beneficial effects: The present invention combines an adjustable needle with a micro-endoscope, allowing the operator to observe the interior of the pitot tube during solder paste application and adjust the solder paste output without changing the needle. This solves the existing problem of the operator being unable to control the amount of solder paste used and observe the solder paste application status, effectively improving application quality and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the visualization device structure for coating solder paste on the heating wire in the cavity of the atmospheric data sensor; Figure 2 Schematic diagram of the adjustable needle structure of the visualization device for coating solder paste on the heating wire in the inner cavity of the atmospheric data sensor; Figure 3 Schematic diagram of the front-end structure of the inner core of the visualization device for coating solder paste on the inner cavity heating wire of the atmospheric data sensor; Figure 4 Schematic diagram of the structure of the quick fixing device for visualizing the solder paste coating of the heating wire in the inner cavity of the atmospheric data sensor; Figure 5 A flow chart showing the method of using a visualization device for coating solder paste on a heating wire in the cavity of an atmospheric data sensor.

[0015] Figures 1 to 5 The reference numerals shown in the figure represent respectively: 1-adjustable needle tube, 2-miniature endoscope, 3-quick fixing device, 4-solder paste delivery tube, 5-miniature endoscope control terminal, 6-solder paste storage barrel, 7-needle housing, 8-sealing ring, 9-adjusting nut, 10-inner core, 11-housing, 12-rubber gasket. DETAILED DESCRIPTION

[0016] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0017] Please refer to Figure 1 The atmospheric data sensor inner cavity heating wire solder paste coating visualization device includes an adjustable needle tube 1, a miniature endoscope 2, a quick fixing device 3, a solder paste delivery tube 4, a miniature endoscope control terminal 5 and a solder paste storage bucket 6.

[0018] Among them, as attached Figure 2 As shown in the figure, the adjustable needle tube 1 is the core executive component of the device, which consists of a needle shell 7, a sealing ring 8, an adjusting nut 9 and an inner core 10. The outer side of the needle shell 7 is provided with a groove, and the needle tip is in a retracted shape, which is convenient for the operator to accurately control the coating position of the solder paste. Figure 3 As shown, the inner core 10 is a long, pointed metal rod with a hollow end connected to the through-hole at the front end, used to deliver solder paste. The outer diameter of the circular ring at the tip of the inner core 10 matches the inner diameter of the needle tip of the needle housing 7, ensuring a good seal and flow control. The front end of the adjustment nut 9 is threaded, and the rear end is fixedly connected to the inner core 10. By rotating the adjustment nut 9, the inner core 10 can be moved up and down within the needle housing 7, adjusting the gap between the tip of the inner core 10 and the tip of the needle housing 7, thereby precisely adjusting the amount of solder paste discharged.

[0019] The miniature endoscope 2 is installed beside the adjustable needle tube 1 and has the function of zooming in and out, and is used to observe the coating status of the solder paste deep inside the sensor cavity in real time. Figure 4 As shown, the quick-fix device 3 is used to quickly and stably secure the adjustable needle 1 and microendoscope 2 together. It consists of a housing 11 and a rubber gasket 12. The housing 11 is designed as a single-sided cantilevered clip, allowing for convenient fastening of the needle and endoscope. The inner wall of the housing 11 is provided with a groove for securing the rubber gasket 12, increasing friction and ensuring that the needle and endoscope do not shift relative to each other or fall off during use.

[0020] In order to ensure that the relative positions of the adjustable needle tube 1 and the microendoscope 2 remain consistent each time they are clamped, and to prevent the solder paste from contaminating the endoscope lens, the adjustable needle tube 1, the microendoscope 2 and the quick fixing device 3 are all provided with mutually matching grooves.

[0021] As attached Figure 5 As shown, the present invention also provides a method for using the device for visualizing solder paste coating of the heating wire in the inner cavity of an atmospheric data sensor. The specific operating steps are as follows: S1: Fixing device, which fixes the adjustable needle tube 1 and the microendoscope 2 together through the quick fixing device 3, and uses the grooves on each component to align them to ensure that the relative positions of the two are accurate and fixed.

[0022] S2: Connecting and Adjusting the Solder Paste Amount. Before coating, connect the solder paste delivery tube 4 from the solder paste storage barrel 6 to the end of the inner core 10 of the adjustable needle tube 1. The operator then rotates the adjustment nut 9 according to process requirements. This rotation moves the inner core 10, to which it is attached, up and down, thereby changing the gap between the tip of the inner core 10 and the tip of the needle housing 7, achieving precise control of the solder paste output.

[0023] S3: Inserting into the inner cavity of the sensor, inserting the adjusted and fixed coating device including the adjustable needle tube 1 and the miniature endoscope 2 into the inner cavity of the atmospheric data sensor.

[0024] S4: Visualized coating: The operator holds the rear end of the adjustable needle tube 1 and moves it within the sensor cavity, adjusting the needle tip position to apply solder paste. Throughout the coating process, the operator observes the inner cavity conditions captured by the microendoscope 2 in real time through the image displayed on the microendoscope control terminal 5. The operator monitors whether the solder paste is evenly filled between the heating wire and the inner wall and whether it completely covers the heating wire, thus achieving full visualization of the operation and ensuring coating quality.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Visualization device for solder paste coating of heating wire in the inner cavity of atmospheric data sensor, characterized in that: The invention comprises an adjustable needle tube (1), wherein the adjustable needle tube (1) comprises a needle shell (7), a sealing ring (8), an adjusting nut (9) and an inner core (10); further comprises a miniature endoscope (2), a solder paste delivery tube (4), a miniature endoscope control terminal (5), a solder paste storage barrel (6) and a quick fixing device (3), wherein the quick fixing device (3) comprises a shell (11) and a rubber gasket (12); The outer side of the needle housing (7) is provided with a groove for ensuring that the relative position of the miniature endoscope (2) and the adjustable needle tube (1) is fixed each time the miniature endoscope (2) is clamped; the miniature endoscope (2) has a zooming function; the housing (11) of the quick fixing device (3) is a single-sided cantilever buckle for quickly fixing the adjustable needle tube (1) and the miniature endoscope (2); the inner wall of the housing (11) is provided with a groove for fixing the rubber gasket (12).

2. The device for visualizing solder paste coating of an inner cavity heating wire of an atmospheric data sensor according to claim 1, characterized in that: The adjustable needle tube (1), the miniature endoscope (2), and the quick fixing device (3) are all provided with grooves to ensure that the relative positions of the adjustable needle tube (1) and the miniature endoscope (2) are fixed.

3. The device for visualizing solder paste coating of an inner cavity heating wire of an atmospheric data sensor according to claim 1, characterized in that: The needle tip of the needle housing (7) is in a retracted shape.

4. The device for visualizing solder paste coating of an inner cavity heating wire of an atmospheric data sensor according to claim 1, characterized in that: The inner core (10) is a pointed long metal rod, the end of which is hollow and connected to the front through hole.

5. The device for visualizing solder paste coating of an inner cavity heating wire of an atmospheric data sensor according to claim 4, characterized in that: The outer diameter of the needle tip ring of the inner core (10) is consistent with the inner diameter of the needle tip of the needle shell (7).

6. The device for visualizing solder paste coating of an inner cavity heating wire of an atmospheric data sensor according to claim 5, characterized in that: The front end of the adjusting nut (9) is threaded, and the rear end is fixed with an inner core (10).

7. A method for using a device for visualizing solder paste coating of an inner cavity heating wire of an atmospheric data sensor, characterized in that: The device for visualizing solder paste coating on the heating wire in the inner cavity of an atmospheric data sensor according to any one of claims 1 to 6 comprises the following steps: S1: Fix the adjustable needle tube (1) and the micro endoscope (2) through a quick fixing device (3); S2: Before applying solder paste, the operator connects the solder paste delivery tube (4) to the inner core (10); rotates the adjustment nut (9) to control the position of the inner core (10), thereby controlling the amount of solder paste output; S3: After the adjustment is completed, the fixed device is placed into the inner cavity of the atmospheric data sensor; S4: The operator holds the rear end of the adjustable needle (1) to adjust the solder paste outlet; during the coating process, the operator observes the solder paste coating status of the sensor cavity through the micro endoscope control terminal (5).

8. The method for using the device for visualizing solder paste coating of an inner cavity heating wire of an atmospheric data sensor according to claim 7, characterized in that: The specific method for adjusting the solder paste output in S2 is to rotate the adjusting nut (9) to move the inner core (10) up and down, thereby changing the gap between the needle tip of the inner core (10) and the needle tip of the needle shell (7) to adjust the solder paste output.

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