Thermocouple welding support

Abstract

The utility model discloses a thermocouple welding support, which relates to the field of welding and comprises a linear guide rail pair including a z-axis linear guide rail pair and an x-axis linear guide rail pair mounted on the z-axis linear guide rail pair. The x-axis linear guide rail pair comprises an x-axis rail, two first sliding blocks installed on the x-axis rail and a welding clamp installed on the first sliding blocks, the welding clamp comprises a base connected with the first sliding blocks and a cover plate detachably installed on the base, a groove is formed in the upper end of the base, and the first sliding blocks are arranged in the groove. The axis of the groove is parallel to the axis of the x-axis track; the problems that in the prior art, when a thermocouple is welded, the influence of human factors is large, the welding quality is difficult to guarantee, and potential safety hazards exist during manual welding are solved.

Description

Technical Field

[0001] The utility model relates to the field of welding, in particular to a thermocouple welding bracket. Background Art

[0002] Thermocouples are commonly used temperature measuring elements in temperature measuring instruments. Their operating principle is to convert the measured temperature signal into an electrical signal, which is then converted into visible temperature data for the measured medium through an electrical instrument. A thermocouple primarily consists of a thermocouple, an insulating protective tube, and a junction box. During manufacturing and maintenance, two lengths of thermocouple wire made of dissimilar materials must be welded together to form a loop for temperature measurement. Currently used welding techniques employ heat sources such as argon arc welding, carbon powder welding, gas welding, electrolyte welding, and arc welding to melt the free end of the thermocouple wire, forming a spherical weld twice the wire diameter to complete the weld.

[0003] Arc welding involves clamping the ends of the thermocouples to be welded side by side, connecting the clamped ends to the positive terminal of a power source, and using a carbon rod to connect to the negative terminal of the power source. During welding, the carbon rod contacts the top of the thermocouple ends to initiate the arc, instantly generating a large amount of heat that melts the joint and completes the weld. Once the end to be measured has melted into a ball, the carbon rod is quickly withdrawn. This welding method is simple and easy to operate, and it also prevents contamination of the welded ends when welding precious metal thermocouples.

[0004] However, the existing thermocouple welding has the following shortcomings:

[0005] 1. The parameters that affect welding quality, such as the contact time between the thermocouple clamping end and the carbon rod, and the relative position between the two, are difficult to fix. Human factors have a large impact, and welding quality depends too much on the operator's skill level.

[0006] 2. Since the operator needs to operate the thermocouple and carbon rod simultaneously to adjust the spatial position between the two during welding, it is difficult to adjust the welding current, resulting in uncontrollable welding current, affecting the welding quality and making it difficult to ensure a high pass rate;

[0007] 3. Since the current during welding is relatively high, welding carbon rods and wires are usually covered with insulating sleeves. However, the instantaneous current during welding is relatively high, and there are still safety risks such as electric shock. Utility Model Content

[0008] The utility model provides a thermocouple welding bracket to solve the problems in the prior art that human factors have a great influence on thermocouple welding, it is difficult to ensure welding quality, and there are safety hazards during manual welding.

[0009] To achieve the above purpose, the present invention provides the following solutions:

[0010] A thermocouple welding bracket includes a linear guide pair, the linear guide pair including a z-axis linear guide pair and an x-axis linear guide pair mounted on the z-axis linear guide pair, the x-axis linear guide pair including an x-axis track, two first sliders mounted on the x-axis track, and a welding fixture mounted on the first slider, the welding fixture including a base connected to the first slider and a cover detachably mounted on the base, a groove being provided at the upper end of the base, the axis of the groove being parallel to the axis of the x-axis track.

[0011] The utility model uses a welding fixture to clamp the thermocouple and the welding part for welding, and no manual hand-held operation is required. The thermocouple and the welding part are fixed by the groove, and the cover plate is used to cover the part except the welding point, which improves the safety during welding. The position of the thermocouple and the welding part is then adjusted and fixed by the x-axis linear guide pair and the z-axis linear guide pair, which is convenient for mechanical or manual welding and improves the stability and welding quality.

[0012] Furthermore, the x-axis linear guide pair also includes a first knob rotatably connected to the first slider, a first thread is provided at the end of the first knob, a second thread is provided on the x-axis track, and the first thread and the second thread are engaged.

[0013] The position of the first slider is adjusted by rotating the knob, with high precision and a stable adjustment process, thereby improving welding quality.

[0014] Furthermore, a first limiting block is provided on one side or both sides of the first thread, a first limiting groove is provided on the first sliding block, and the first limiting block matches the first limiting groove.

[0015] The first limiting block cooperates with the first limiting groove to limit the lateral movement of the first limiting block, thereby ensuring the stability of the first limiting block.

[0016] Furthermore, the axis of the first limiting block and the axis of the first limiting groove are both parallel to the axis of the x-axis track.

[0017] Furthermore, the first slider is provided with a first limit switch, which fixes the first slider to prevent it from moving during welding, thereby ensuring the stability of the first limit block and the welding quality.

[0018] Furthermore, the z-axis linear guide pair includes a z-axis track, a second slider mounted on the z-axis track, and a mounting bracket fixedly mounted on the second slider, and the x-axis track is fixedly mounted on the mounting bracket. The position of the thermocouple and the weldment in the z-axis direction is adjusted by sliding the second slider.

[0019] Furthermore, the z-axis linear guide pair also includes a second knob rotatably connected to the second slider, a third thread is provided at the end of the second knob, a fourth thread is provided on the z-axis track, and the third thread and the fourth thread are engaged.

[0020] The position of the second slider on the z-axis track is adjusted by the second knob, the adjustment accuracy is high, the adjustment process is stable, and the welding quality can be improved.

[0021] Furthermore, a second limiting block is provided on one side or both sides of the third thread, a second limiting groove is provided on the second sliding block, and the second limiting block matches the second limiting groove.

[0022] The cooperation between the second limiting block and the second limiting groove limits the lateral movement of the second limiting block, thereby ensuring that the second limiting block will not fall due to gravity and ensuring the stability of the second limiting block.

[0023] Furthermore, the axis of the second limiting block and the axis of the second limiting groove are both parallel to the axis of the z-axis track.

[0024] Furthermore, the second slider is provided with a second limit switch, which fixes the second slider to prevent it from sliding down and moving during welding, thereby ensuring the stability of the second limit block and the welding quality.

[0025] One or more technical solutions provided by this utility model have at least the following technical effects or advantages:

[0026] (1) The utility model uses a welding fixture to clamp the thermocouple and the weldment for welding, without manual hand-held operation. The thermocouple and the weldment are fixed by grooves, and the cover plate is used to cover the part except the welding point, thereby improving the safety during welding. The position of the thermocouple and the weldment is then adjusted and fixed by the x-axis linear guide pair and the z-axis linear guide pair, which facilitates mechanical or manual welding and improves stability and welding quality.

[0027] (2) The position of the welding point can be adjusted by the knob, with high adjustment accuracy and stable adjustment process, which can improve the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of the present invention, and do not constitute a limitation of the embodiments of the present invention;

[0029] Figure 1 This is a schematic diagram of the overall structure of the device in the utility model;

[0030] Figure 2 This utility model Figure 1 A magnified view of part A in the middle;

[0031] Figure 3 This is a partial schematic diagram of the rear view of the device in the present utility model;

[0032] Among them, 1-x-axis track, 2-first slider, 3-base, 4-cover, 5-groove, 6-first knob, 7-second thread, 8-first limit block, 9-first limit slot, 10-first limit switch, 11-z-axis track, 12-second slider, 13-mounting bracket, 14-second knob, 15-fourth thread, 16-second limit block, 17-second limit slot, 18-second limit switch. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0035] Example 1

[0036] This embodiment provides a thermocouple welding bracket, such as Figure 1-Figure 3 As shown, it includes a linear guide pair, the linear guide pair includes a z-axis linear guide pair and an x-axis linear guide pair installed on the z-axis linear guide pair, the x-axis linear guide pair includes an x-axis track 1, two first sliders 2 installed on the x-axis track 1 and a welding fixture installed on the first slider 2, the welding fixture includes a base 3 connected to the first slider 2 and a cover 4 detachably installed on the base 3, a groove 5 is opened at the upper end of the base 3, and the axis of the groove 5 is parallel to the axis of the x-axis track 1.

[0037] Among them, the z-axis linear guide pair is installed in the vertical direction, and the x-axis linear guide pair is installed in the horizontal direction at the moving end of the z-axis linear guide pair. The base 3 and the cover 4 are made of heat-insulating material. The cover 4 is detachably connected to the base 3 by bolts, snaps or mortise and tenon structures. The size of the groove 5 is equal to the size of the thermocouple or welded part clamped by the base 3 and the cover 4. Therefore, the base 3 is preferably detachably installed on the first slider 2 for easy replacement.

[0038] In a more preferred embodiment, the x-axis linear guide pair also includes a first knob 6 rotatably connected to the first slider 2, a first thread is provided at the end of the first knob 6, and a second thread 7 is provided on the x-axis track 1, and the first thread and the second thread 7 are engaged.

[0039] Among them, the first knob 6 includes a rotating part that is rotated by hand and a rod that rotates coaxially with the rotating part. One end of the rod is embedded in the first slider 2. The rod embedded in the first slider 2 is provided with a first thread, and the first thread is engaged with the second thread 7. The first thread can be a spur gear or a helical gear. The second thread 7 is set on the x-axis track 1, so it can be a spur rack or a helical rack.

[0040] In a more preferred embodiment, a first limiting block 8 is provided on one side or both sides of the first thread, a first limiting groove 9 is provided on the first sliding block 2 , and the first limiting block 8 matches the first limiting groove 9 .

[0041] The first limiting block 8 may be a columnar structure or a wedge-shaped structure, and the first limiting groove 9 is a corresponding groove body.

[0042] In a more preferred embodiment, the axis of the first limiting block 8 and the axis of the first limiting groove 9 are both parallel to the axis of the x-axis track 1 .

[0043] In a more preferred embodiment, the first slider 2 is provided with a first limit switch 10. The first limit switch 10 can be a bolt passing through the first slider 2 and contacting the x-axis track 1. By tightening the bolt, friction is generated between the bolt and the x-axis track 1, preventing the first slider 2 from moving.

[0044] Example 2

[0045] On the basis of Example 1, Figure 1-Figure 3 As shown, the z-axis linear guide pair includes a z-axis rail 11, a second slider 12 installed on the z-axis rail 11 and a mounting frame 13 fixedly installed on the second slider 12, and the x-axis rail 1 is fixedly installed on the mounting frame 13.

[0046] Among them, two z-axis rails 11 are preferably set in parallel, and the two ends of the x-axis rail 1 are respectively mounted on the moving ends of the two z-axis rails 11, which can improve the stability of the x-axis rail 1. The mounting frame 13 is an L-shaped structure, so that the moving end of the x-axis rail 1 faces upward, which is convenient for welding operations.

[0047] In a more preferred embodiment, the z-axis linear guide pair also includes a second knob 14 rotatably connected to the second slider 12, a third thread is provided at the end of the second knob 14, and a fourth thread 15 is provided on the z-axis track 11, and the third thread and the fourth thread 15 are engaged.

[0048] Among them, the second knob 14 includes a rotating part that is rotated by hand and a rod that rotates coaxially with the rotating part. One end of the rod is embedded in the second slider 12. The rod embedded in the second slider 12 is provided with a third thread, and the third thread is engaged with the fourth thread 15. The third thread can be a spur gear or a helical gear, and the fourth thread 15 can be a spur rack or a helical rack.

[0049] In a more preferred embodiment, a second limiting block 16 is provided on one side or both sides of the third thread, and a second limiting groove 17 is provided on the second sliding block 12 , and the second limiting block 16 matches the second limiting groove 17 .

[0050] The second limiting block 16 may be a columnar structure or a wedge-shaped structure, and the second limiting groove 17 is a corresponding groove body.

[0051] In a more preferred embodiment, the axis of the second limiting block 16 and the axis of the second limiting groove 17 are both parallel to the axis of the z-axis track 11 .

[0052] In a more preferred embodiment, a second limit switch 18 is provided on the second slider 12. The second limit switch 18 can be a bolt passing through the second slider 12 and contacting the z-axis track 11. By tightening the bolt, friction is generated between the bolt and the z-axis track 11, preventing the second slider 12 from moving.

[0053] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0054] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A thermocouple welding bracket, comprising a linear guide pair, characterized in that: The linear guide pair comprises a z-axis linear guide pair and an x-axis linear guide pair mounted on the z-axis linear guide pair; the x-axis linear guide pair comprises an x-axis track (1), two first sliders (2) mounted on the x-axis track (1), and a welding fixture mounted on the first sliders (2); the welding fixture comprises a base (3) connected to the first sliders (2) and a cover (4) detachably mounted on the base (3); a groove (5) is provided at the upper end of the base (3); and the axis of the groove (5) is parallel to the axis of the x-axis track (1).

2. A thermocouple welding bracket according to claim 1, characterized in that: The x-axis linear guide pair further comprises a first knob (6) rotatably connected to the first slider (2), a first thread is provided at the end of the first knob (6), a second thread (7) is provided on the x-axis track (1), and the first thread and the second thread (7) are engaged.

3. A thermocouple welding bracket according to claim 2, characterized in that: A first limiting block (8) is provided on one side or both sides of the first thread, a first limiting groove (9) is provided on the first sliding block (2), and the first limiting block (8) matches the first limiting groove (9).

4. A thermocouple welding bracket according to claim 3, characterized in that: The axis of the first limiting block (8) and the axis of the first limiting groove (9) are both parallel to the axis of the x-axis track (1).

5. The thermocouple welding bracket according to claim 1, characterized in that: A first limit switch (10) is provided on the first sliding block (2).

6. The thermocouple welding bracket according to claim 1, characterized in that: The z-axis linear guide pair comprises a z-axis track (11), a second slider (12) mounted on the z-axis track (11), and a mounting frame (13) fixedly mounted on the second slider (12); the x-axis track (1) is fixedly mounted on the mounting frame (13).

7. The thermocouple welding bracket according to claim 6, characterized in that: The z-axis linear guide pair further includes a second knob (14) rotatably connected to the second slider (12), a third thread is provided at the end of the second knob (14), and a fourth thread (15) is provided on the z-axis track (11), and the third thread and the fourth thread (15) are engaged.

8. The thermocouple welding bracket according to claim 7, characterized in that: A second limiting block (16) is provided on one side or both sides of the third thread, a second limiting groove (17) is provided on the second sliding block (12), and the second limiting block (16) matches the second limiting groove (17).

9. The thermocouple welding bracket according to claim 8, characterized in that: The axis of the second limiting block (16) and the axis of the second limiting groove (17) are both parallel to the axis of the z-axis track (11).

10. The thermocouple welding bracket according to claim 6, characterized in that: A second limit switch (18) is provided on the second slider (12).

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