Welding tool
The welding tool automates nitrogen protective cap installation and removal, reducing operator workload and improving efficiency and accuracy, thereby ensuring high-quality welding.
Patent Information
- Application Number
- CN202310797871.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-30
- Publication Date
- 2024-12-31
AI Technical Summary
Manual operation of nitrogen protective caps during welding processes leads to increased operator workload, reduced efficiency, and potential inaccuracies in cap installation, affecting welding quality.
A welding tool with a tool body featuring multiple welding stations and a driving unit that automates the installation and removal of nitrogen protective caps using product positioning seats and a driving unit to switch the caps between installed and removed positions.
Reduces manual work, improves efficiency, ensures accurate cap installation, and enhances welding quality by maintaining consistent product positioning.
Smart Images
Figure CN119216932A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of welding, and in particular to a welding tool. Background Art
[0002] The stop valve usually includes a valve body and a pipe, which are welded and fixed, and nitrogen needs to be used to protect the welding parts during the welding process to improve the welding quality. Therefore, the welding steps of the stop valve usually include loading the valve body and the pipe, applying flux, installing the nitrogen protective cap, heating and welding the product and cooling it, removing the nitrogen protective cap, and removing the product. Among them, the installation and removal of the nitrogen protective cap are currently manual operations: after the valve body and the pipe are loaded, the nitrogen protective cap is installed manually; after the welding is completed, the nitrogen protective cap is removed manually. However, the manual loading and unloading of the nitrogen protective cap causes the operator to have too much manual work, and it is difficult to improve the per capita efficiency, and there is a possibility of missing installation; and it cannot be guaranteed that the nitrogen protective cap can be accurately inserted into the pipe every time, which may cause the pipe to deviate and affect the welding quality. Summary of the invention
[0003] The purpose of the present invention is to provide a welding tool, which can reduce the manual work of operators, improve work efficiency, solve the problem of missing assembly, and reduce the product defect rate.
[0004] In order to solve the above technical problems, the present invention provides a welding tool, including a tool body, the tool body having at least one welding station, each of the welding stations is provided with a product positioning seat, and a nitrogen protection cap movable relative to the product positioning seat, the product positioning seat is used to position and install the product to be welded;
[0005] The welding tool also includes a driving unit, which can move relative to the tool body and be located at a position corresponding to any of the welding stations. The driving unit is used to drive the nitrogen protection cap to switch between a first position and a second position. When in the first position, the nitrogen protection cap is installed in the nitrogen protection position of the product to be welded; when in the second position, the nitrogen protection cap is detached from the product to be welded.
[0006] The welding tool of the present invention is provided with a product positioning seat at each welding station, the product positioning seat is used for positioning and installing the product to be welded, and at the same time, the nitrogen protection cap is arranged in one-to-one correspondence with the product positioning seat, and a driving unit is additionally provided, the driving unit is used for realizing the position switching of the nitrogen protection cap, completing the installation or removal of the nitrogen protection cap, which can reduce the manual work of the operator and improve the work efficiency; and whether in the installation process of the nitrogen protection cap or in the subsequent welding process, the product to be welded can always be in the theoretical position, thereby improving the position accuracy of the product to be welded and ensuring the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 A schematic structural diagram of a specific embodiment of the welding tool provided by the present invention when the nitrogen protection cap is in the first position;
[0008] Figure 2 for Figure 1 A schematic diagram of the structure of the welding tool when the nitrogen protection cap is in the second position;
[0009] Figure 3 for Figure 1 Schematic diagram of the structure of the welding tool at the second angle;
[0010] Figure 4 for Figure 3 A partial enlarged view of
[0011] Figure 5 for Figure 1 The structural diagram of the welding tooling from the third angle;
[0012] Figure 6 for Figure 5 A partial enlarged view of
[0013] Figure 7 for Figure 1 The schematic diagram of the structure of the welding tooling from the fourth angle;
[0014] Figure 8 for Figure 2 Schematic diagram of the structure of the welding tool at the second angle;
[0015] Fig. 9 for Figure 2 The schematic diagram of the structure of the welding tool from the third angle;
[0016] Fig.10 for Fig. 9 A partial enlarged view of
[0017] Fig.11 for Figure 2 Schematic diagram of the structure of the welding tool at the fourth angle;
[0018] Fig.12 for Fig.11 A partial enlarged view of
[0019] Fig.13 for Figure 1 A first state diagram of the welding tool during the process of switching from the second position to the first position;
[0020] Fig.14 for Fig.13 The structural diagram of the welding tooling at the second angle;
[0021] Fig.15 for Fig.13The structural diagram of the welding tooling from the third angle;
[0022] Fig.16 for Fig.15 A partial enlarged view of
[0023] Fig.17 for Fig.13 The schematic diagram of the structure of the welding tooling from the fourth angle;
[0024] Fig.18 for Fig.17 A partial enlarged view of
[0025] Fig.19 for Figure 1 A second state diagram of the welding tool during the process of switching from the second position to the first position;
[0026] Fig. 20 for Fig.19 The structural diagram of the welding tooling at the second angle;
[0027] Fig.21 for Fig.19 The structural diagram of the welding tooling from the third angle;
[0028] Fig. 22 for Fig.21 A partial enlarged view of
[0029] Fig.23 for Fig.19 The schematic diagram of the structure of the welding tooling from the fourth angle;
[0030] Fig.24 for Fig.23 A partial enlarged view of
[0031] Fig.25 for Figure 1 A first state diagram of the welding tool during switching from a first position to a second position;
[0032] Fig.26 for Fig.25 The structural diagram of the welding tooling at the second angle;
[0033] Fig. 27 for Fig.25 The structural diagram of the welding tooling from the third angle;
[0034] Fig.28 for Fig. 27 A partial enlarged view of
[0035] Fig.29 for Fig.25 Structural diagram from the fourth angle;
[0036] Fig.30 for Fig.29 A partial enlarged view of
[0037] Fig.31 for Figure 1 A second state diagram of the welding tool during the process of switching from the first position to the second position;
[0038] Fig.32 for Fig.31 The structural diagram of the welding tooling at the second angle;
[0039] Fig.33 for Fig.31 The structural diagram of the welding tooling from the third angle;
[0040] Fig.34 for Fig.30 A partial enlarged view of
[0041] Fig.35 for Fig.31 The schematic diagram of the structure of the welding tooling from the fourth angle;
[0042] Fig.36 for Fig.35 A partial enlarged view of
[0043] Fig.37 for Figure 1 A third state diagram of the welding tool during the process of switching from the first position to the second position;
[0044] Fig.38 for Fig.37 The structural diagram of the welding tooling at the second angle;
[0045] Fig.39 for Fig.37 The structural diagram of the welding tooling from the third angle;
[0046] Fig.40 for Fig.39 A partial enlarged view of
[0047] Fig.41 for Fig.37 The schematic diagram of the structure of the welding tooling from the fourth angle;
[0048] Fig.42 for Fig.41 A partial enlarged view of
[0049] Fig.43 for Figure 1 A fourth state diagram of the welding tool during the process of switching from the first position to the second position;
[0050] Fig.44 for Fig.43 The structural diagram of the welding tooling at the second angle;
[0051] Fig.45 for Fig.43 The structural diagram of the welding tooling from the third angle;
[0052] Fig.46 for Fig.43 The schematic diagram of the structure of the welding tooling from the fourth angle;
[0053] Fig.47 for Fig.46 A partial enlarged view of
[0054] Fig.48 for Fig.47 Structural diagram of the second angle;
[0055] in, Figure 1-Figure 48 The reference numerals in the figures are described as follows:
[0056] 1- tooling body; 11- product positioning seat; 111- positioning rod; 12- nitrogen protection cap; 13- nitrogen protection cap connecting seat; 131- rotating part; 1311- protruding part; 131a- notch; 132- horizontal extension part; 133- fixing part;
[0057] 21-first driving component; 211-first driving part; 2111-first output shaft; 212-second driving part; 2121-second output shaft; 213-fixed shaft; 22-second driving component; 221-third output shaft;
[0058] 01-Products to be welded. DETAILED DESCRIPTION
[0059] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0060] The “plurality” mentioned herein generally means more than two; and when “plurality” is used to indicate the number of certain components, it does not indicate the relationship between the quantities of these components.
[0061] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic structural diagram of a specific embodiment of the welding tool provided by the present invention when the nitrogen protection cap is in the first position; Figure 2 for Figure 1 Schematic diagram of the structure of the welding tool when the nitrogen protection cap is in the second position.
[0062] The present invention provides a welding tool, comprising a tool body 1, wherein the tool body 1 has a plurality of welding stations, and the plurality of welding stations are distributed in a circumference, each welding station is provided with a product positioning seat 11, and a nitrogen protection cap 12 movable relative to the product positioning seat 11, and the product positioning seat 11 is used to position and install a product 01 to be welded;
[0063] The welding tool also includes at least one driving unit, which can move relative to the tool body 1 and is located at a position corresponding to any welding station. The driving component is used to drive the nitrogen protection cap 12 to switch between the first position and the second position. In the first position, the nitrogen protection cap 12 is installed in the nitrogen protection position of the product 01 to be welded, such as Figure 1 In the second position, the nitrogen protective cap 12 is separated from the product to be welded 01, as shown Figure 2 shown.
[0064] The welding tool of the present invention is provided with a product positioning seat 11 at each welding station. The product positioning seat 11 is used to position and install the product 01 to be welded, so that the product 01 to be welded can always be in the theoretical position no matter in the installation process of the nitrogen protection cap 12 or in the subsequent welding process, thereby improving the position accuracy of the product 01 to be welded and ensuring the product quality; at the same time, the nitrogen protection cap 12 is arranged in a one-to-one correspondence with the product positioning seat 11, and a driving unit is additionally provided, and the driving unit is used to realize the position switching of the nitrogen protection cap 12 and complete the installation or removal of the nitrogen protection cap 12. On the one hand, it can reduce the manual work of the operator and improve the work efficiency; on the other hand, the mechanized operation can also solve the problem of missing installation that may occur in manual loading and unloading of the nitrogen protection cap 12, thereby reducing the product defect rate.
[0065] It should be noted that when the product 01 to be welded is a stop valve, the nitrogen protection position of the product 01 to be welded is the free port of the pipe in the stop valve. Of course, the welding tool of the present invention is not only applicable to stop valves, but also to other welding assemblies including pipes. The following is an example of a stop valve as the product 01 to be welded.
[0066] It can be understood that in actual applications, there is no limitation on the number and distribution of welding stations. For example, the number of welding stations can be at least one. When the number of welding stations is multiple, the multiple welding stations can also be distributed in a linear manner.
[0067] Furthermore, in the present embodiment, each welding station is also provided with a nitrogen protection cap connection seat 13, and the nitrogen protection cap 12 is hinged to the nitrogen protection cap connection seat 13 and can rotate around the hinge to switch between the first position and the second position.
[0068] Specifically, Figure 13-Figure 24As shown, when the nitrogen protection cap 12 needs to be installed, the driving unit can control the nitrogen protection cap 12 to gradually flip downward around the hinge until the nitrogen protection cap 12 is installed at the nitrogen protection position of the product 01 to be welded, and the nitrogen protection cap 12 is switched from the second position to the first position; Figure 25-Figure 48 As shown, when welding is completed and the nitrogen protection cap 12 needs to be removed, the drive unit can control the nitrogen protection cap 12 to gradually flip upward around the hinge until the nitrogen protection cap 12 is stably in a position away from the product 01 to be welded, thereby realizing the switch from the second position to the first position.
[0069] Of course, in practical applications, there is no restriction on the connection method between the nitrogen protection cap 12 and the nitrogen protection cap connection seat 13. For example, the nitrogen protection cap 12 can also be movably connected to the nitrogen protection cap connection seat 13, and can be moved in the vertical direction to switch between the first position and the second position. Specifically, when the nitrogen protection cap 12 needs to be installed, the drive unit can control the nitrogen protection cap 12 to move vertically downward until the nitrogen protection cap 12 is installed in the nitrogen protection position of the product to be welded 01, and the nitrogen protection cap 12 is switched from the second position to the first position; when the welding is completed and the nitrogen protection cap 12 needs to be removed, the drive unit can control the nitrogen protection cap 12 to move vertically upward until the nitrogen protection cap 12 is stably in a position away from the product to be welded 01, and the switch from the second position to the first position is realized.
[0070] Please continue to refer to Figure 21-22 In this embodiment, the nitrogen protection cap connecting seat 13 includes a rotating part 131 and a horizontal extension part 132 fixed to the tooling body 1. The first end of the rotating part 131 is hinged to the horizontal extension part 132, and the second end of the rotating part 131 is connected to the nitrogen protection cap 12. The second end of the rotating part 131 is provided with notches 131a on both sides in the width direction, and a protrusion 1311 is formed between the two notches 131a. The horizontal extension part 132 is correspondingly provided with an accommodating notch, and the protrusion 1311 is hinged inside the accommodating notch. When the nitrogen protection cap 12 is in the second position, the end wall 1312 of the rotating part 131 that surrounds the notch 131a forms an abutment portion and abuts against the top wall of the horizontal extension part 132, so that the nitrogen protection cap 12 can no longer continue to rotate, and the nitrogen protection cap 12 can be stably in the current position, which is also the initial position of the nitrogen protection cap 12.
[0071] As configured above, after each welding is completed, the nitrogen protection cap 12 can return to the same position, so that the subsequent position switching of the nitrogen protection cap 12 can be carried out smoothly.
[0072] In practical applications, there are many ways to achieve the limiting effect on the nitrogen protection cap 12. For example, in the upper side wall of the rotating part 131 and the upper side wall of the horizontal extension part 132, one is provided with an abutment rod or an abutment block, and the other is correspondingly provided with a limiting groove. When the nitrogen protection cap 12 is located in the second position, the abutment end of the abutment rod or the abutment block can be just inserted into the limiting groove, so that the nitrogen protection cap 12 can no longer continue to rotate, and the nitrogen protection cap 12 can be stably in the current position, and the abutment rod or the abutment block forms an abutment portion.
[0073] Of course, the implementation method of this embodiment can achieve the limiting effect on the nitrogen protection cap 12 without setting a separate limiting structure. It has a simple structure, is easy to process, and reduces the structural cost. It is a more preferred technical solution.
[0074] In addition, the nitrogen protection cap connecting seat 13 also includes a fixing portion 133, which extends in the vertical direction. The lower end of the fixing portion 133 is fixed to the tooling body 1, and the horizontal extension portion 132 is connected to the fixing portion 133. The specific connection method is not limited, and a detachable connection method is preferably adopted. In this way, the height of the nitrogen protection cap 12 can be adjusted by adjusting the installation height of the horizontal extension portion 132 relative to the fixing portion 133, so that the nitrogen protection cap 12 can be just covered in the nitrogen protection position of the product 01 to be welded.
[0075] In practical applications, the connection between the horizontal extension portion 132 and the fixing portion 133 may be implemented in the following ways:
[0076] A connecting sleeve is provided at the corresponding end of the horizontal extension portion 132, an internal thread is provided inside the connecting sleeve, and a matching external thread is provided on the peripheral wall of the fixing portion 133. The horizontal extension portion 132 is threadedly connected to the fixing portion 133. When the height of the nitrogen protection cap 12 needs to be adjusted, it is only necessary to twist the horizontal extension portion 132.
[0077] Alternatively, a fixing hoop is provided at the corresponding end of the horizontal extension portion 132. The fixing hoop may be specifically an annular structure and is broken in the circumferential direction. Connecting portions extending outward are respectively provided at the breaking portions. The two connecting portions are respectively provided with a through hole for fixing bolts to pass through. During the installation process, the horizontal extension portion 132 may be installed on the fixing portion 133 in advance, and then the fixing bolts may be released, and the horizontal extension portion 132 may be slid along the axial direction of the fixing portion 133. When the horizontal extension portion 132 is moved to a suitable position, the fixing bolts may be tightened so that the horizontal extension portion 132 and the nitrogen protection cap 12 are maintained at the current height.
[0078] Of course, in practical applications, it is also feasible that the fixing portion 133 and the horizontal extension portion 132 are an integrated structure. In this case, the connection method between the fixing portion 133 and the tooling body 1 can be set to be adjustable, and the height of the horizontal extension portion 132 and the nitrogen protection cap 12 can be adjusted by adjusting the connection height of the fixing portion 133.
[0079] Please continue to refer to Figure 1 In this embodiment, the driving unit includes a first driving component 21 and a second driving component 22 which are independent of each other. Specifically:
[0080] The first driving component 21 is located on the upper side of the nitrogen protection cap 12 and is used to drive the nitrogen protection cap 12 to flip downward. When the nitrogen protection cap 12 needs to be installed, the first driving component 21 moves relative to the tool body 1 and is located at a position corresponding to the welding station. The first driving component 21 pushes the nitrogen protection cap 12 to switch from the second position to the first position.
[0081] The second driving component 22 is located at the lower side of the nitrogen protection cap 12, and is used to drive the nitrogen protection cap 12 to flip upward. When the nitrogen protection cap 12 needs to be removed, the second driving component 22 moves relative to the tooling body 1 and is located at a position corresponding to the welding station. The second driving component 22 pushes the nitrogen protection cap 12 to switch from the first position to the second position.
[0082] Among them, the first driving component 21 has a first driving part 211 and a second driving part 212, the first driving part 211 has a first output shaft 2111, the first output shaft 2111 is connected to the second driving part 212, and the first output shaft 2111 can move horizontally; the second driving part 212 has a vertically extending second output shaft 2121, and the second output shaft 2121 can be extended or retracted to push the nitrogen protection cap 12 to flip downward and switch from the second position to the first position.
[0083] In this way, when the nitrogen protection cap 12 needs to be installed, the second output shaft 2121 is first extended to the required position, and then the first output shaft 2111 moves horizontally and drives the second drive part 212 to move horizontally. The second output shaft 2121 gradually abuts against the rotating part 131 and pushes the rotating part 131 to rotate around the hinge until the nitrogen protection cap 12 is installed in the nitrogen protection position of the product 01 to be welded; then, the second output shaft 2121 is retracted, and the first output shaft 2111 moves in the opposite direction, driving the second drive part 212 back to the initial position.
[0084] In practical applications, the first driving part 211 and the second driving part 212 can both be hydraulic cylinders / pneumatic cylinders / electric cylinders, etc.
[0085] The second driving component 22 has a third output shaft 221 extending obliquely upward, and the third output shaft 221 can be extended or retracted to push the nitrogen protection cap 12 to flip upward and switch from the first position to the second position.
[0086] In this way, when the nitrogen protection cap 12 needs to be removed, the third output shaft 221 is gradually extended, and the free end of the third output shaft 221 first abuts against the rotating part 131, and then pushes the rotating part 131 to rotate around the hinge until the nitrogen protection cap 12 is stabilized in the second position; then, the third output shaft 221 is retracted to the initial position.
[0087] In practical applications, the second driving component 22 may also be a hydraulic cylinder / a pneumatic cylinder / electric cylinder, etc.
[0088] like Figure 1 The first driving component 21 also includes a vertically extending fixed shaft 213, and the first driving part 211 is connected to the fixed shaft 213. There is no restriction on the connection method. It is preferably a detachable connection method, such as the aforementioned fixed clamp, to facilitate adjustment of the connection position of the first driving part 211.
[0089] Of course, the driving unit is not limited to the setting method of this embodiment, and there may be a variety of implementation methods. For example, the rotating part 131 has a rotating shaft, and is hinged with the horizontal extension part 132 through the rotating shaft. The driving unit includes a first driving member, a second driving member and a third driving member. The first driving member has a first driving shaft extending horizontally, and the first driving shaft is connected to the second driving member for driving the second driving member to move horizontally. The second driving member has a second driving shaft extending in the vertical direction, and the free end of the second driving shaft is connected to the third driving member. The first driving member and the second driving member can be electric cylinders / hydraulic cylinders / pneumatic cylinders, etc. The third driving member adopts the structural form of a driving motor, and the third driving motor of the driving motor is connected to the third driving member. The shaft is detachably connected to the rotating shaft of the rotating part 131 through a reducer, such as being attracted or disconnected by an electromagnet. When the nitrogen protection cap 12 needs to be installed, the first drive shaft and the second drive shaft extend out, driving the third drive member to move to a preset position, that is, the third drive shaft is opposite to the rotating shaft of the rotating part 131, and the two are controlled to be attracted, and the third drive shaft is controlled to rotate. The third drive shaft can drive the rotating part 131 to turn downward synchronously, and the nitrogen protection cap 12 is switched from the second position to the first position; after the position switching of the nitrogen protection cap 12 is completed, the third drive shaft is disconnected from the rotating shaft of the rotating part 131, and the first drive shaft and the second drive shaft are retracted, driving the third drive member back to the initial position;
[0090] When welding is completed and the nitrogen protection cap 12 needs to be removed, the first drive shaft and the second drive shaft extend out, driving the third drive member to move to a preset position, so that the third drive shaft is opposite to the rotating shaft of the rotating part 131, and the two are controlled to be attracted, and the third drive shaft is controlled to rotate in the opposite direction, and the rotating part 131 is driven to flip upward until the nitrogen protection cap 12 is stably in a position away from the product to be welded 01, thereby realizing the switch from the second position to the first position.
[0091] In this embodiment, the number of the first driving unit 211 and the second driving unit 212 are both one. In practical applications, there is no limit to the number of the first driving unit 211 and the second driving unit 212. There can also be multiple first driving units 211 and second driving units 212. Multiple first driving units 211 or second driving units 212 can work simultaneously to improve work efficiency.
[0092] It can be understood that the driving unit can move relative to the tool body 1, which can be implemented in two specific ways:
[0093] In the first implementation method: the tooling body 1 is fixed to the ground, a circular motion track is set around the tooling body 1, the driving unit is installed on the circular motion track, and can make circular motion around the tooling body 1, the driving unit can rotate to a position corresponding to any welding station, and be fixed at the current position to carry out loading and unloading of the nitrogen protection cap 12.
[0094] In the second implementation method: the tooling body 1 is installed on the ground through a rotating shaft, and also includes a driving mechanism, which is connected to the rotating shaft and drives the tooling body 1 to rotate around the axis. The driving unit is fixedly arranged on the side of the tooling body 1. The tooling body 1 can be rotated to a position corresponding to the driving unit at any welding station and fixed at the current position to carry out loading and unloading of the nitrogen protection cap 12.
[0095] This embodiment adopts the second implementation method. Compared with the first implementation method, when positioning and installing the product 01 to be welded, any welding station can be made opposite to the operator by rotating the tooling body 1. The operator does not need to move to complete the positioning and installation of all products 01 to be welded, which saves time and effort and is a more preferred technical solution.
[0096] Furthermore, if Figure 1 As shown, in this embodiment, the product positioning seat 11 includes two positioning rods 111, and the positioning rods 111 include a large diameter section and a small diameter section. The small diameter section is located at the upper end of the large diameter section, and a step surface facing the upper end is formed between the large diameter section and the small diameter section. The stop valve has two mounting holes. During the installation process, the small diameter section of the positioning rod 111 passes through the corresponding mounting hole, and the step surface is abutted against the lower end surface of the stop valve to achieve the positioning installation of the stop valve.
[0097] As set above, the positioning rod 111 is inserted into the installation hole in the stop valve to achieve positioning installation of the stop valve, with high positioning accuracy, and can avoid damage to the structure of the stop valve during the positioning installation process.
[0098] Of course, the specific structure of the product positioning seat 11 is not limited to the above-mentioned embodiment. For other products to be welded 01 that do not have mounting holes, the product positioning seat 11 may include two relatively arranged clamping arms, and the two clamping arms form a mounting groove that matches the surrounding wall of the product to be welded 01. The driving device also includes a driving device, which is connected to the two clamping arms and can drive the two clamping arms to be relatively close or relatively far away to clamp or loosen the product to be welded 01, thereby realizing the positioning and installation of the product to be welded 01.
[0099] The above is a detailed introduction to a welding tool provided by the present invention. The principle and implementation method of the present invention are described in detail using specific examples. The description of the above embodiments is only used to help understand the method and core idea of the present invention. It should be pointed out that for ordinary technicians in this technical field, the present invention can also be improved and modified without departing from the principle of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims
1. A welding tool, characterized in that: The tooling body (1) comprises at least one welding station, each of the welding stations is provided with a product positioning seat (11) and a nitrogen protection cap (12) movable relative to the product positioning seat (11), the product positioning seat (11) being used for positioning and installing a product (01) to be welded; The welding tool further comprises a driving unit, which is capable of moving relative to the tool body (1) and is located at a position corresponding to any of the welding stations, and the driving unit is used to drive the nitrogen protection cap (12) to switch between a first position and a second position. When in the first position, the nitrogen protection cap (12) covers the nitrogen protection position of the product to be welded (01); when in the second position, the nitrogen protection cap (12) is detached from the product to be welded (01).
2. The welding tool according to claim 1, characterized in that: Each welding station is also provided with a nitrogen protection cap connection seat (13), and the nitrogen protection cap (12) is hinged to the nitrogen protection cap connection seat (13) and can rotate around the hinge to switch between the first position and the second position.
3. The welding tool according to claim 2, characterized in that: The nitrogen protection cap connecting seat (13) comprises a rotating part (131) and a horizontal extension part (132) fixed to the tooling body (1); a first end of the rotating part (131) is hinged to the horizontal extension part (132); a second end of the rotating part (131) is connected to the nitrogen protection cap (12); one of the rotating part (131) and the horizontal extension part (132) has an abutment part; when the nitrogen protection cap (12) is located at the second position, the abutment part abuts against the other.
4. The welding tool according to claim 3, characterized in that: The second end of the rotating portion (131) is provided with notches (131a) on both sides in the width direction, a protrusion (1311) is formed between the two notches (131a), the horizontal extension portion (132) is provided with a corresponding accommodating notch, the protrusion (1311) is hinged inside the accommodating notch, and when the nitrogen protection cap (12) is located at the second position, an end wall (1312) of the rotating portion (131) surrounding the notch (131a) abuts against a top wall of the horizontal extension portion (132), and the end wall (1312) forms the abutting portion.
5. The welding tool according to claim 3, characterized in that: The nitrogen protection cap connection seat (13) further comprises a fixing portion (133), wherein the fixing portion (133) extends in a vertical direction, the lower end of the fixing portion (133) is fixed to the tooling body (1), and the horizontal extension portion (132) is connected to the fixing portion (133).
6. The welding tool according to claim 2, characterized in that: The driving unit comprises a first driving component (21) and a second driving component (22) which are independent of each other; the first driving component (21) is located on the upper side of the nitrogen protection cap (12) and is used to drive the nitrogen protection cap (12) to switch from the second position to the first position; the second driving component (22) is located on the lower side of the nitrogen protection cap (12) and is used to drive the nitrogen protection cap (12) to switch from the first position to the second position.
7. The welding tool according to claim 6, characterized in that: The first driving component (21) comprises a first driving portion (211) and a second driving portion (212); the first driving portion (211) comprises a first output shaft (2111), the first output shaft (2111) is connected to the second driving portion (212), the first output shaft (2111) is capable of horizontal movement, and the second driving portion (212) comprises a second output shaft (2121) extending vertically, the second output shaft (2121) is capable of extending or retracting to push the nitrogen protection cap (12) to flip downward, and switch from the second position to the first position.
8. The welding tool according to claim 6, characterized in that: The second driving component (22) has a third output shaft (221) extending obliquely upward, and the third output shaft (221) can be extended or retracted to push the nitrogen protection cap (12) to flip upward and switch from the first position to the second position.
9. The welding tool according to any one of claims 1 to 8, characterized in that: The tool body (1) has a plurality of welding stations, which are distributed in a circumferential direction; the drive unit is fixed on one side of the tool body (1); and the tool body (1) is capable of rotating in a circumferential direction.
10. The welding tool according to any one of claims 1 to 8, characterized in that: The product positioning seat (11) includes two positioning rods (111), the two positioning rods (111) extend vertically, and the positioning rods (111) include a large diameter section and a small diameter section that are axially connected, the small diameter section is located at the upper end of the large diameter section, and a step surface is formed between the large diameter section and the small diameter section. In the installed state, the small diameter section passes through the installation holes at both ends of the product to be welded (01), and the lower end surface of the product to be welded (01) is supported on the step surface.