Atmospheric data sensor inner cavity heating wire solder paste coating visual device and method

Abstract

The application discloses an atmospheric data sensor inner cavity heating wire solder paste coating visual device and method, and relates to the field of aerospace processing and manufacturing technology; in order to solve the problem that the amount of solder paste cannot be controlled and the coating process cannot be observed due to manual operation in the prior art, the following technical scheme is provided: the atmospheric data sensor inner cavity heating wire solder paste coating visual device comprises an adjustable needle tube, a micro endoscope and a quick fixing device. The adjustable needle tube can control the amount of solder paste output by rotating an adjusting nut; the micro endoscope is used for observing the inner cavity coating state in real time. In use, the needle tube and the endoscope are fixed by the quick fixing device and then placed into the inner cavity of the sensor, an operator observes through a micro endoscope control terminal, and visual coating is realized. The application combines solder paste coating and visual observation, effectively solves the problems that the amount of solder paste cannot be accurately controlled and the coating state cannot be observed, and thus improves the coating quality and heating efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerospace manufacturing technology, in particular to a heating wire soldering paste coating visualization device and method for an inner cavity of an atmospheric data sensor. BACKGROUND

[0002] During the flight of an aircraft, in order to ensure that the atmospheric data sensor is not affected by low temperature, the heating component becomes one of the key designs to ensure flight safety. At present, the heating components of the atmospheric data sensor mainly include three categories: electric heating, pneumatic heating and new heating technology. Among them, the electric heating can be further divided into resistance wire heating, PTC ceramic heating and carbon fiber heating. The resistance wire heating is widely used due to its low cost and mature technology. However, how to fix the resistance wire inside the airspeed tube and ensure good contact and conduction so that the heat is transmitted to the outside of the airspeed tube with minimal loss becomes a key breakthrough problem.

[0003] At present, the heating wire is fixed in the inner cavity of the sensor by welding process. The operator usually uses a common stick, selects a soldering paste with special ingredients, and manually fills and fixes the gap between the resistance wire and the inner wall of the airspeed tube to ensure that the heating temperature of the resistance wire can be effectively transmitted to the inner wall of the airspeed tube. However, due to the small internal operating space and long length of the airspeed tube, manual coating of the soldering paste has the following problems: first, the use of a common stick cannot finely control the amount of soldering paste, resulting in uneven coating thickness; second, the operator has a blind spot in the line of sight, and cannot observe whether the soldering paste is evenly coated between the heating wire and the inner wall of the airspeed tube, nor can it confirm whether the soldering paste completely covers the heating wire. These uncontrollable factors may cause loss of resistance wire heating efficiency, and even cause the resistance wire to be scrapped, resulting in economic losses. SUMMARY

[0004] The purpose of the present application is to provide a heating wire soldering paste coating visualization device and method for the inner cavity of an atmospheric data sensor, to solve the problem that the amount of soldering paste cannot be controlled and the coating process has a blind spot in the line of sight, which cannot be observed, due to the use of a common stick for manual coating in the prior art.

[0005] The technical solution of the present application to solve the above technical problems is as follows:

[0006] The atmospheric data sensor inner cavity heating wire soldering paste coating visualization device comprises an adjustable needle tube, the adjustable needle tube comprises a needle head shell, a sealing ring, an adjusting nut and an inner core; further comprising a micro endoscope, a soldering paste conveying pipe, a micro endoscope control terminal, a soldering paste storage barrel and a quick fixing device, the quick fixing device comprises a shell and a rubber gasket;

[0007] The recess is arranged on the outside of the needle shell, and is used for fixing the relative position of the micro endoscope and the adjustable needle tube each time.

[0008] Further, the adjustable needle tube, the micro endoscope and the quick fixing device are all provided with recesses, so that the relative position of the adjustable needle tube and the micro endoscope is fixed.

[0009] Further, the needle tip end of the needle shell is in a folded shape.

[0010] Further, the inner core is a long and sharp metal rod, and the tail end is hollow and connected with the front end through hole.

[0011] Further, the outer diameter of the needle tip ring of the inner core is consistent with the inner diameter of the needle tip of the needle shell.

[0012] Further, the front end of the adjusting nut is threaded, and the rear end is fixed with the inner core.

[0013] The method for using the heating wire solder paste coating visual device in the inner cavity of the air data sensor comprises the following steps:

[0014] S1: the adjustable needle tube and the micro endoscope are fixed through the quick fixing device;

[0015] S2: before coating the solder paste, the operator connects the solder paste conveying pipe with the inner core; the position of the inner core is controlled by rotating the adjusting nut, so that the amount of the solder paste is controlled;

[0016] S3: after the adjustment is completed, the fixed device is placed in the inner cavity of the air data sensor;

[0017] S4: the operator holds the rear end of the adjustable needle tube, and adjusts the solder paste outlet; during the coating process, the operator observes the solder paste coating state in the inner cavity of the sensor through the micro endoscope control terminal.

[0018] Further, in S2, the specific adjusting mode of the amount of the solder paste is that the inner core is moved up and down by rotating the adjusting nut, so that the gap between the needle tip end of the inner core and the needle tip end of the needle shell is changed, so that the amount of the solder paste is adjusted.

[0019] The present application has the following beneficial effects:

[0020] The present application combines the adjustable needle and the micro endoscope, so that the operator can observe the inside of the air speed tube during the coating of the solder paste, and the amount of the solder paste can be adjusted without replacing the needle. This solves the problem that the operator cannot control the amount of the solder paste and cannot observe the solder paste coating state in the prior art, effectively improves the coating quality and reduces the cost loss. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Structure diagram of the visual device for solder paste coating of the heating wire in the inner cavity of the atmospheric data sensor;

[0022] Figure 2 Structure diagram of the adjustable needle tube of the visual device for solder paste coating of the heating wire in the inner cavity of the atmospheric data sensor;

[0023] Figure 3 Structure diagram of the front end of the inner core of the visual device for solder paste coating of the heating wire in the inner cavity of the atmospheric data sensor;

[0024] Figure 4 Structure diagram of the quick fixing device of the visual device for solder paste coating of the heating wire in the inner cavity of the atmospheric data sensor;

[0025] Figure 5 Structure diagram of the visual device for solder paste coating of the heating wire in the inner cavity of the atmospheric data sensor.

[0026] Figures 1 to 5 The reference signs shown in the drawings represent: 1-adjustable needle tube, 2-micro endoscope, 3-quick fixing device, 4-solder paste conveying pipe, 5-micro endoscope control terminal, 6-solder paste storage barrel, 7-needle head shell, 8-sealing ring, 9-adjusting nut, 10-inner core, 11-outer shell, 12-rubber gasket. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0028] Please refer to Figure 1 The visual device for solder paste coating of the heating wire in the inner cavity of the atmospheric data sensor comprises an adjustable needle tube 1, a micro endoscope 2, a quick fixing device 3, a solder paste conveying pipe 4, a micro endoscope control terminal 5 and a solder paste storage barrel 6.

[0029] As shown in the accompanying Figure 2 The adjustable needle tube 1 is the core execution component of the device, which is composed of a needle head shell 7, a sealing ring 8, an adjusting nut 9 and an inner core 10. The outer side of the needle head shell 7 is provided with a groove, and the needle tip end is in a converging shape, which facilitates the accurate control of the coating position of the solder paste by the operator. Specifically, as shown in the accompanying Figure 3As shown, the inner core 10 is a long and thin metal rod, the end of which is hollow and connected to the through hole of the front end for conveying solder paste. The outer diameter of the needle tip of the inner core 10 is consistent with the inner diameter of the needle tip of the needle shell 7 to achieve good sealing and flow control. The front end of the adjusting nut 9 is threaded, and the rear end is fixedly connected with the inner core 10. By rotating the adjusting nut 9, the inner core 10 can move up and down in the needle shell 7, changing the gap between the needle tip of the inner core 10 and the needle tip of the needle shell 7, thereby accurately adjusting the output of the solder paste.

[0030] The micro endoscope 2 is installed beside the adjustable needle tube 1 and has magnification and reduction functions, and is used for real-time observation of the coating state of the solder paste in the deep part of the inner cavity of the sensor. As shown in the accompanying drawings, Figure 4 As shown, the quick fixing device 3 is used for quickly and stably fixing the adjustable needle tube 1 and the micro endoscope 2 together. It is composed of a shell 11 and a rubber gasket 12. The shell 11 is designed as a single-sided cantilever buckle, which can conveniently clamp the needle tube and the endoscope. The inner wall of the shell 11 is provided with a groove for fixing the rubber gasket 12 to increase the friction force and ensure that the needle tube and the endoscope do not relatively displace or fall off during use.

[0031] In order to ensure that the relative position of the adjustable needle tube 1 and the micro endoscope 2 remains consistent each time it is clamped, and to prevent the solder paste from contaminating the endoscope lens, recesses are provided on the adjustable needle tube 1, the micro endoscope 2 and the quick fixing device 3 which cooperate with each other.

[0032] As shown in the accompanying drawings, Figure 5 The application also provides a use method of the solder paste coating visualizing device for the heating wire in the inner cavity of the atmospheric data sensor, and the specific operation steps are as follows:

[0033] S1: fixing device, the adjustable needle tube 1 and the micro endoscope 2 are fixed together through the quick fixing device 3, and the recesses on the components are used for alignment to ensure that the relative position of the two is accurate and fixed.

[0034] S2: connecting and adjusting the amount of solder paste, before the coating operation, first connect the solder paste conveying pipe 4 from the solder paste storage barrel 6 with the end of the inner core 10 of the adjustable needle tube 1. Then, the operator rotates the adjusting nut 9 according to the process requirements. The rotation of the adjusting nut 9 drives the upward and downward movement of the inner core 10 fixed therewith, thereby changing the gap between the needle tip of the inner core 10 and the needle tip of the needle shell 7, and realizing accurate control of the output of the solder paste.

[0035] S3: inserting into the inner cavity of the sensor, the coating device including the adjustable needle tube 1 and the micro endoscope 2 which have been adjusted and fixed is inserted into the inner cavity of the atmospheric data sensor.

[0036] S4: visual coating, the operator holds the rear end of the adjustable needle tube 1, moves in the lumen of the sensor, adjusts the position of the needle tip to carry out the solder paste coating. During the whole coating process, the operator observes the lumen situation taken by the micro endoscope 2 in real time through the picture displayed by the micro endoscope control terminal 5, monitors whether the solder paste is uniformly filled between the heating wire and the inner wall and whether it completely covers the heating wire, so as to realize the whole process visual operation and ensure the coating quality.

[0037] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air data sensor inner cavity heating wire solder paste coating visualizing device, characterized in that, Including adjustable needle tube (1), the adjustable needle tube (1) includes needle head shell (7), sealing ring (8), adjusting nut (9) and inner core (10) are composed of;Still including micro endoscope (2), solder paste delivery pipe (4), micro endoscope control terminal (5), solder paste storage bucket (6) and quick fixing device (3), the quick fixing device (3) includes shell (11) and rubber gasket (12) are composed of; Wherein, the needle head shell (7) outside is equipped with recess, for guaranteeing the relative position of micro endoscope (2) and adjustable needle tube (1) is fixed each time clamping;The micro endoscope (2) has zooming function;The shell (11) of quick fixing device (3) is single-side cantilever type buckle, for quickly fixing adjustable needle tube (1) and micro endoscope (2);The inner wall of shell (11) is equipped with recess, for fixing rubber gasket (12);The inner core (10) is sharp long strip metal bar, the end is hollow and is connected with front end through hole mouth;The front end of adjusting nut (9) is threaded, and the rear end is fixed inner core (10).

2. The pitot probe lumen heater wire solder paste application visualization apparatus of claim 1, wherein, The adjustable needle tube (1), micro endoscope (2) and quick fixing device (3) are all equipped with recess, to guarantee the relative position of adjustable needle tube (1) and micro endoscope (2) is fixed.

3. The pitot probe lumen heater wire solder paste application visualization apparatus of claim 1, wherein, The needle tip end of needle head shell (7) is converging.

4. The pitot probe lumen heater wire solder paste application visualization apparatus of claim 1, wherein, The needle tip circle ring outer diameter of inner core (10) is consistent with the needle tip inner diameter size of needle head shell (7).

5. The method of using the air data sensor internal cavity heating wire solder paste application visualization device, characterized in that, The atmospheric data sensor inner cavity heating wire solder paste coating visualization device based on any one of claims 1-4 realizes, including the following steps: S1: adjustable needle tube (1) and micro endoscope (2) are fixed through quick fixing device (3); S2: before coating solder paste, the operator connects solder paste delivery pipe (4) with inner core (10);Rotating adjusting nut (9) controls the position of inner core (10), thereby controlling the solder paste output; S3: after adjustment, the fixed device is placed into atmospheric data sensor inner cavity; S4: the operator holds adjustable needle tube (1) rear end, adjusts the solder paste outlet;During coating process, the operator observes the solder paste coating state of sensor inner cavity through micro endoscope control terminal (5).

6. The method of using a pitot probe lumen heater wire solder paste application visualization apparatus of claim 5, wherein, The specific adjusting mode of solder paste output in S2 is that rotating adjusting nut (9) makes inner core (10) move up and down, thereby making the gap between inner core (10) needle tip end and needle head shell (7) needle tip end change, to adjust the output.

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