A type of base spring tube welding fixture

Abstract

This utility model discloses a base-mounted Bourdon tube welding fixture, comprising: a limiting mold mounted on a support frame for tilting the base and the Bourdon tube; wherein the limiting mold includes a main body, with limiting parts on both sides of the main body for limiting and fixing the base, and a snap-fit ​​part on one side of the limiting parts for snapping the Bourdon tube. In this utility model, the base is fixed by the limiting parts of the limiting fixture, and the Bourdon tube is snapped into place by the snap-fit ​​part on one side of the limiting parts. Subsequently, the corresponding positions of the base and the externally covered Bourdon tube are continuously heated by the high-frequency vibration of a high-frequency welding machine and the heating element, followed by soldering, effectively strengthening the welding strength at the connection between the Bourdon tube and the base, thereby improving the service life of the thermo-pressure gauge.

Description

Technical Field

[0001] This utility model relates to the technical field of temperature and pressure gauge processing equipment, specifically to a base spring tube welding fixture. Background Technology

[0002] A thermobarometer is an instrument used to simultaneously measure ambient temperature and air pressure. It combines temperature and pressure sensing components and can intuitively display the detected temperature and air pressure through pointers or electronic displays. It is widely used in meteorological observation, outdoor exploration, aviation and navigation and other fields.

[0003] When assembling a thermo-pressure gauge, the internal base and Bourdon tube need to be soldered together. The existing processing method is to place the base on a heating plate for preheating. When the base temperature rises to a preset temperature value that can melt the solder bar, it is placed in a fixed mold for soldering. The soldering part has the problem of poor soldering. When the thermo-pressure gauge is used in a harsh environment, it will leak air, which will render the thermo-pressure gauge unusable. Utility Model Content

[0004] The purpose of this utility model is to provide a base spring tube welding fixture in order to solve the above problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution, including:

[0006] The limiting mold, mounted on the support frame, is used to tilt the machine base and spring tube;

[0007] The limiting mold includes a main body, with limiting parts on both sides of the main body. The limiting parts are used to limit and fix the machine base. A snap-fit ​​part is provided on one side of the limiting part, which is used to snap-fit ​​the spring tube.

[0008] As a further description of the above technical solution, the limiting part includes a first extension and a second extension, which are used to limit and fix the machine base.

[0009] As a further description of the above technical solution, the first extension and the second extension are arranged in parallel.

[0010] As a further description of the above technical solution, a limiting groove is formed between the first extension and the first extension, and the limiting groove is used to place the base.

[0011] As a further description of the above technical solution, the outer contour of the limiting groove fits the middle contour of the base.

[0012] As a further description of the above technical solution, the snap-fit ​​part is disposed on one side of the second limiting part, and the snap-fit ​​part is used to snap the spring tube.

[0013] As a further description of the above technical solution, a snap-fit ​​groove is formed between the snap-fit ​​portion and the second limiting portion.

[0014] As a further description of the above technical solution, the support frame includes a bracket, and a base plate is provided at the bottom of the bracket.

[0015] As a further description of the above technical solution, the top of the bracket is provided with a placement groove, and the limiting mold is placed on the placement groove.

[0016] As a further description of the above technical solution, a high-frequency welding machine is provided on one side of the support frame, and a heating tube is extended from one side of the high-frequency welding machine.

[0017] The beneficial effects of this utility model are as follows:

[0018] In this invention, the base is fixed by the limiting part of the limiting clamp, and the spring tube is clamped by the snap-fit ​​part on one side of the limiting part. Then, the corresponding positions of the base and the spring tube covered by the outside are continuously heated by the high-frequency vibration of the high-frequency welding machine and the heating tube, and then soldering is performed. This effectively strengthens the welding strength at the connection between the spring tube and the base, thereby improving the service life of the temperature and pressure gauge.

[0019] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the machine base spring tube welding fixture of this utility model;

[0021] Figure 2 yes Figure 1 A structural diagram from the perspective of point A in the middle;

[0022] Figure 3 yes Figure 1 Front view of the middle limit mold;

[0023] Figure 4 yes Figure 1 Side view of the middle limiting mold;

[0024] Figure 5 yes Figure 1 Top view of the middle limit mold;

[0025] Figure 6 yes Figure 1 Front view of the central support frame;

[0026] Figure 7 yes Figure 1 Side view of the central support frame;

[0027] Figure 8 yes Figure 1 Sectional view of the central machine base;

[0028] Figure 9 yes Figure 1 Side view of the central base;

[0029] Figure 10 yes Figure 1 Rear view of the middle frame;

[0030] Figure 11 yes Figure 1 Front view of the Bourdon tube;

[0031] Figure 12 yes Figure 1 Side view of the Bourdon tube.

[0032] Figure label:

[0033] 1. Limiting mold; 11. Main body; 12. Limiting part; 121. First extension part; 122. Second extension part; 13. Snap-fit ​​part; 14. Limiting groove; 15. Snap-fit ​​groove; 2. Support frame; 21. Bracket; 211. Placement groove; 22. Base plate; 3. Machine base; 4. Spring tube; 5. High frequency welding machine; 6. Heating tube. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0035] like Figures 1-12 As shown, in one embodiment, a machine base spring tube welding fixture includes: a limiting mold 1, which is installed on a support frame 2 for tilting the machine base 3 and the spring tube 4, which facilitates observation and operation during welding and ensures uniform distribution of molten solder during the welding process;

[0036] The limiting mold 1 includes a main body 11 to withstand temperature changes and mechanical stress during the welding process; limiting parts 12 are provided on both sides of the main body 11 to limit and fix the machine base 3 and prevent the machine base 3 from shifting during welding; correspondingly, a snap-fit ​​part 13 is provided on one side of the limiting part 12 to snap-fit ​​the spring tube 4 so that the spring tube 4 and the machine base 3 maintain a preset relative position.

[0037] For example, the limiting part 12 includes a first extension 121 and a second extension 122, so that the first extension 121 and the second extension 122 can clamp the limiting and fixing base 3 to achieve rigid limiting and fixing of the base 3. Even if the base 3 is subjected to high-frequency vibration or slight external force during welding, the base 3 will not be displaced.

[0038] Specifically, the first extension 121 and the second extension 122 are arranged in parallel, and a limiting groove 14 is formed between the first extension 121 and the second extension 122. The outer contour of the limiting groove 14 fits the middle contour of the base 3.

[0039] Understandably, the limiting groove 14 can hold the base 3, and the limiting parts 12 on both sides limit the main body 11 of the base 3, effectively preventing shaking during the welding process.

[0040] Furthermore, the snap-fit ​​part 13 is provided on one side of the second limiting part 12 for snapping the spring tube 4, thereby allowing the end of the spring tube 4 to correspond to the welding node at the end of the base 3.

[0041] Specifically, a snap-fit ​​groove 15 is formed between the snap-fit ​​part 13 and the second limiting part 12 to ensure that the spring tube 4 will not fall off after being snapped in, nor will it deform due to excessive compression.

[0042] Understandably, the snap-fit ​​groove 15 allows the annular spring tube 4 to be snapped onto the outside of the end of the base 3, and one end of the spring tube 4 to be aligned with the slot to be welded at the end of the base 3, and then connected by melting and soldering with solder bars.

[0043] Please continue reading. Figures 1-12 In this embodiment, the support frame 2 includes a bracket 21, and a base plate 22 is provided at the bottom of the bracket 21. By increasing the contact area with the table surface, the overall stability of the support frame 2 is significantly improved.

[0044] Specifically, the top of the bracket 21 has a V-shaped placement groove 211, and the limiting mold 1 is tilted (45° in this application, so that the operator can observe the welding part from the front and make the heating tube 6 wrap around the welding part at the most reasonable angle) and placed on the placement groove 211, and is fixedly connected to the bracket 21 by welding.

[0045] For example, a high-frequency welding machine 5 is provided on one side of the support frame 2. The high-frequency welding machine 5 can move back and forth along the slide rail, so as to make it convenient to adjust the distance according to the welding position. On the side of the high-frequency welding machine 5 facing the welding part, a heating tube 6 is extended. The heating tube 6 is made of high-temperature resistant ceramic material.

[0046] Understandably, the heating tube 6 of the high-frequency welding machine 5 wraps around the part to be welded, forming a local high-temperature area. The high-frequency vibration output by the high-frequency welding machine 5, combined with the continuous heating of the heating tube 6, can generate a higher instantaneous temperature at the welding point than that of a traditional heating plate. This high temperature can completely melt the solder bar and fully wet the welding surface, forming a metallurgical bond. This makes the strength of the welding point far exceed that of ordinary welding. Even if the temperature and pressure gauge is subjected to harsh environments such as high and low temperature cycles and vibration impacts during subsequent use, the welding point will not experience failure problems such as cracking or falling off.

[0047] Working principle: The base 3 is fixed by the limiting part 12 of the limiting clamp, and the spring tube 4 is clamped by the snap-fit ​​part 13 on one side of the limiting part 12. Then, the corresponding positions of the base 3 and the spring tube 4 covered by the heating tube 6 are continuously heated by the high-frequency vibration of the high-frequency welding machine 5. When the temperature reaches the preset value, the solder bar is placed at the welding point. The solder bar melts rapidly at high temperature, flows along the aligned slot and port gap and fills the entire weld. After the solder bar is completely solidified, the high-frequency welding machine 5 is turned off, the welded component is removed, and the entire welding process is completed.

[0048] Through the above technical solution, this application can effectively strengthen the welding strength at the connection between the Bourdon tube 4 and the base 3, thereby effectively improving the structural reliability of the temperature and pressure gauge when used for a long time in harsh environments and extending the service life of the temperature and pressure gauge.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stand spring tube welding fixture, characterized by, include: A limiting mold (1) is installed on a support frame (2) for tilting the base (3) and the spring tube (4); The limiting mold (1) includes a main body (11), and limiting parts (12) are provided on both sides of the main body (11). The limiting parts (12) are used to limit and fix the machine base (3). A snap-fit ​​part (13) is provided on one side of the limiting part (12). The snap-fit ​​part (13) is used to snap-fit ​​the spring tube (4).

2. The housing spring tube welding fixture of claim 1, wherein, The limiting part (12) includes a first extension (121) and a second extension (122), which are used to limit and fix the base (3).

3. The housing spring tube welding fixture of claim 2, wherein, The first extension (121) and the second extension (122) are arranged in parallel.

4. The housing spring tube welding fixture of claim 2, wherein, A limiting groove (14) is formed between the first extension (121) and the first extension (121), the limiting groove (14) being used to place the base (3).

5. The housing spring tube welding fixture of claim 4, wherein, The outer contour of the limiting groove (14) fits the middle contour of the base (3).

6. The housing spring tube welding fixture of claim 1, wherein, The snap-fit ​​part (13) is disposed on one side of the second limiting part (12), and the snap-fit ​​part (13) is used to snap the spring tube (4).

7. The housing spring tube welding fixture of claim 6, wherein, A snap-fit ​​groove (15) is formed between the snap-fit ​​portion (13) and the second limiting portion (12).

8. The housing spring tube welding fixture of claim 1, wherein, The support frame (2) includes a bracket (21), and a base plate (22) is provided at the bottom of the bracket (21).

9. The housing spring tube welding fixture of claim 8, wherein, The bracket (21) has a placement groove (211) on its top, and the limiting mold (1) is placed on the placement groove (211).

10. The housing spring tube welding fixture of claim 8, wherein, A high-frequency welding machine (5) is provided on one side of the support frame (2), and a heating tube (6) extends from one side of the high-frequency welding machine (5).

Images