Clamping, ventilating and positioning device for TIG (Tungsten Inert Gas) welding machine with small rotating radius

Abstract

A clamping, ventilating and positioning device for a TIG (Tungsten Inert Gas) small-rotating-radius welding machine comprises a thin oil pipe clamping device and a thread centering and ventilating device, the thin oil pipe clamping device is connected with a clamping mechanism of the TIG welding machine, the thread centering and ventilating device comprises a ventilating and positioning tool and a central column, the upper end of the ventilating and positioning tool is a cylinder and is connected with an inner hole of a flange, and the lower end of the ventilating and positioning tool is connected with the central column. The lower end of the ventilation positioning tool is connected with the center column through threads, the center column is fixed to a TIG welding machine bottom plate, and the ventilation positioning tool and the center column are provided with ventilation channels. The accuracy of the coaxiality of the short linear section oil pipe welding seam position and a welding machine is guaranteed through the oil pipe thin clamping device and the thread centering ventilation device, internal inflation is achieved, the ventilation device and a flange are well sealed, welding defects are avoided, it is guaranteed that the interior and the exterior of a welding seam are evenly formed, and the welding quality is improved. The device can be widely applied to welding processes of welding machines of multi-brand structures and oil pipes of various sizes and specifications, and is high in universality and wide in range.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically a clamping and ventilation positioning device for a TIG small rotation radius welding machine. Background Technology

[0002] Engineering machinery, vehicles, and hydraulic machinery all rely on various oil pipes, which are welded together from components such as bends, flanges, and joints. Depending on their application and function, oil pipes are processed into a wide variety of shapes. The irregular shapes of these oil pipes make clamping and welding with TIG welding machines inconvenient, especially for short, straight sections and heavy pipes, which negatively impacts TIG welding quality, efficiency, and coverage. Therefore, ensuring welding reliability and ease of use is crucial. Once assembled into products, these oil pipes must withstand high-pressure pulses. Any oil leakage during use will severely affect product reliability; thus, ensuring welding quality is paramount.

[0003] The problems encountered in the TIG welding process are as follows: 1. When welding short straight sections of tubing and welding flanges on a TIG small-radius welding machine, there is a poor coaxiality between the welded area and the welding torch. The original clamping block of the welding machine is relatively thick, causing interference with the welding torch when clamping short straight sections of tubing. It can only be clamped at the bend of the tubing, resulting in a large coaxiality error between the tubing and the welding machine's clamping axis. 2. The fit between the bottom center column of the welding machine and the conical positioning plate is not tight, and some tubing is heavy, with its center of gravity not on the same axis as the welding point. This causes misalignment between the center column and the conical positioning plate, making positioning unreliable. The large coaxiality error between the welded area and the welding torch makes the weld seam prone to skewing defects and poses a risk of oil leakage. On the other hand, the original conical positioning plate of the welding machine is misaligned due to the weight of the tubing and does not fit tightly with the flange, causing internal air leakage. This easily leads to poor weld formation and welding defects such as porosity in the weld seam formed by the tubing and the welded parts. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a TIG small rotation radius welding machine clamping and ventilation positioning device with simple structure and good effect.

[0005] This utility model is achieved through the following technical solution: a clamping and venting positioning device for a TIG small rotation radius welding machine, comprising a thin tubing clamping device and a threaded centering venting device. The thin tubing clamping device is connected to the clamping mechanism of the TIG welding machine. The threaded centering venting device comprises a venting positioning fixture and a central column. The upper end of the venting positioning fixture is a cylinder and is connected to the inner hole of a flange. The lower end of the venting positioning fixture is connected to the central column by a thread. The central column is fixed on the base plate of the TIG welding machine. The venting positioning fixture and the central column are provided with a venting channel.

[0006] Furthermore, the thin clamping device for the oil pipe is a clamping block, and the thickness of the end of the clamping block connected to the oil pipe is less than the thickness of the end connected to the clamping mechanism of the TIG welding machine.

[0007] The connection between the clamping block and the oil pipe is V-shaped.

[0008] The tubing thin clamping device is movably connected to the TIG welding machine clamping mechanism and is used to replace the tubing thin clamping device to match tubing of different sizes.

[0009] The upper end of the ventilation positioning fixture is positioned by a cylinder and the center of the flange.

[0010] The ventilation positioning fixture is replaced according to the different inner diameters of the flange to achieve the purpose of matching the outer diameter of the upper end of the ventilation positioning fixture with the inner diameter of the flange.

[0011] The lower end of the ventilation positioning fixture is provided with an internal thread, and the upper end of the central column is provided with an external thread that cooperates with the internal thread.

[0012] The central column is connected to the base plate of the TIG welding machine by bolts.

[0013] This utility model has the following advantages: The TIG small rotation radius welding machine clamping and ventilation positioning device of this utility model ensures the accuracy of the coaxiality between the short straight section of the oil pipe weld and the welding machine through the oil pipe thin clamping device and the thread centering ventilation device, and realizes internal air filling. The ventilation device and flange seal are excellent, avoiding welding defects and ensuring uniform internal and external weld formation. This device can be widely used in welding machines of multiple brands and various sizes and specifications of oil pipes, and has strong versatility and wide range. Attached Figure Description

[0014] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the thin-walled clamping device for oil pipes and the threaded centering and venting device of this utility model;

[0018] Figure 3 This is a cross-sectional view of the internal structure of this utility model.

[0019] In the diagram: 1. Clamping block, 2. Ventilation positioning fixture, 3. Center column, 4. Bolt, 5. Flange, 6. Oil pipe, 7. TIG welding machine clamping mechanism, 8. TIG welding torch, 9. TIG welding machine turntable, 10. TIG welding machine base plate.

[0020] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1 to 3The TIG small rotation radius welding machine clamping and venting positioning device shown includes a thin tubing clamping device and a threaded centering venting device. The thin tubing clamping device is connected to the TIG welding machine clamping mechanism 7. The threaded centering venting device includes a venting positioning fixture 2 and a center column 3. The upper end of the venting positioning fixture 2 is a cylinder and is connected to the inner hole of the flange 5. The lower end of the venting positioning fixture 2 is connected to the center column 3 by threads. The center column 3 is fixed on the TIG welding machine base plate 10. The venting positioning fixture 2 and the center column 3 are provided with venting channels. This utility model discloses a clamping, venting, and positioning device for a TIG small-radius rotation welding machine. It includes a thin clamping device for the machine body and an internal oil pipe clamping device and a threaded centering and venting device. The clamping device uses a thin clamping block with minimal thickness, which is connected to the TIG welding machine clamping mechanism. It can freely clamp the oil pipe at short, straight sections without interfering with the welding torch during welding. The threaded centering and venting device includes a venting and positioning fixture and a central column. The upper end of the venting and positioning fixture is connected to a flange, and the lower end is connected to the central column. The upper part of the dedicated venting and positioning fixture adopts a cylindrical design, which fits tightly with the inner hole of the flange, effectively ensuring the effectiveness of flange centering and preventing internal air leakage during use, thus improving welding quality. The lower end of the venting and positioning fixture... The flange is connected to the center column via threads, allowing for quick replacement of the appropriate venting and positioning fixture according to the flange's inner diameter. The center column is fixed to the TIG welding machine base plate, ensuring reliable fixation and preventing welding problems caused by positional changes during operation. Additionally, the venting and positioning fixture and the center column have vent holes for internal shielding gas filling during welding. This invention uses a thin-walled tubing clamping device and a threaded centering and venting device to position the flange and tubing, ensuring that the rotation trajectory of the TIG welding torch fixed on the TIG welding machine turntable 9 is coaxial with the area to be welded. The devices are tightly fitted, providing reliable dual-point positioning, convenient and quick tubing clamping, high coaxiality, and leak-free internal shielding gas filling. During welding, the welding torch operates smoothly, resulting in uniform and aesthetically pleasing weld formation both inside and out.

[0025] like Figures 1 to 3 The diagram illustrates a clamping and venting positioning device for a TIG welding machine with a small radius of rotation. The thin clamping device for the oil pipe is a clamping block 1. The thickness of the end of the clamping block 1 connected to the oil pipe 6 is less than the thickness of the end connected to the TIG welding machine clamping mechanism 7. The connection between the clamping block 1 and the oil pipe 6 is V-shaped. The clamping device of this invention mainly consists of a clamping block. The clamping block adopts a trapezoidal, gradually thinning design, which can meet the clamping requirements of short straight sections. The clamping block jaws adopt a V-shaped design, allowing for the replacement of different clamping blocks according to different pipe diameters, thus improving the adaptability of the entire device.

[0026] like Figures 1 to 3The invention relates to a TIG small-radius rotation radius welding machine clamping and venting positioning device. The thin-walled tubing clamping device is movably connected to the TIG welding machine clamping mechanism 7, and is used to replace the thin-walled tubing clamping device to match different sizes of tubing 6. The thin-walled tubing clamping device and the TIG welding machine clamping mechanism 7 are detachably connected, facilitating the replacement of different clamping blocks according to the pipe diameter.

[0027] like Figures 1 to 3 The invention illustrates a TIG small-radius rotation welding machine clamping and venting positioning device. The upper end of the venting positioning fixture 2 is positioned at the center of the flange 5 via a cylinder. The venting positioning fixture 2 can be replaced according to different inner diameters of the flange 5 to achieve a match between the outer diameter of the upper end of the venting positioning fixture 2 and the inner diameter of the flange 5. This invention's venting positioning fixture mates with the flange's inner hole, its upper end is cylindrical and positioned at the flange's center, and the venting positioning fixture can be quickly replaced according to the flange's inner diameter. This structure provides a tight fit, prevents internal air leakage, and is suitable for welding positioning of various standard flanges.

[0028] like Figures 1 to 3 The invention relates to a clamping and venting positioning device for a TIG small radius welding machine. The lower end of the venting positioning fixture 2 has an internal thread, and the upper end of the central column 3 has an external thread that mates with the internal thread. The central column of this invention, in conjunction with the venting positioning fixture, facilitates disassembly. Furthermore, the external thread at the upper end of the central column prevents the accumulation of oily dust and foreign objects during disassembly and replacement, making cleaning easier and avoiding inconvenience caused by the accumulation of foreign matter.

[0029] like Figures 1 to 3 The invention illustrates a clamping, ventilation, and positioning device for a TIG welding machine with a small radius of rotation. The central column 3 is connected to the base plate 10 of the TIG welding machine via bolts 4. This invention utilizes bolts to connect the central column to the base plate of the TIG welding machine, ensuring reliable fixation.

[0030] In use, the device of this invention first fixes the central column to the base plate of the TIG welding machine with bolts, then fastens the special venting and positioning fixture to the central column. Next, the thin clamping block is installed on the clamping mechanism 7 of the TIG welding machine. After the flange and oil pipe are spot-welded, the flange end is placed into the special venting and positioning fixture, and the oil pipe end is clamped by the thin clamping block, achieving double-point positioning and high coaxiality. During welding, there is no leakage during internal air filling, and the rotation trajectory of the TIG welding torch 8 is coaxial and concentric with the area to be welded, resulting in a uniform and aesthetically pleasing weld. The thin clamping block can be replaced according to different oil pipe outer diameters; the special venting and positioning fixture can be replaced according to different oil pipe flange inner diameters, ensuring reliable installation and convenient disassembly.

[0031] This utility model discloses a clamping and venting positioning device for a TIG small-radius welding machine. It employs thin clamping blocks to hold short, straight sections of oil pipe, offering high versatility. The dedicated venting positioning fixture uses a threaded connection to a central column, ensuring a tight fit and replaceability, thus providing high versatility and reliability. The central column is bolted to the welding machine base plate, ensuring reliable fixation and precise positioning. The fixture features a simple structure, precise positioning, high versatility, and convenient operation. Furthermore, this application boasts technological innovations such as simple structure, convenient operation, and accurate positioning, making it widely applicable and solving problems related to poor coaxiality, weld misalignment, and internal leakage / air filling in the welding of short, straight sections of oil pipe.

[0032] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0033] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A TIG small-rotation-radius welder clamping ventilation positioning device, characterized in that: The oil pipe thin clamping device is connected with the TIG welding machine clamping mechanism (7), and the threaded centering venting device includes a venting positioning tool (2) and a center column (3).

2. A TIG small-rotation-radius welding machine clamping ventilation positioning device according to claim 1, characterized in that: The oil pipe thin clamping device is connected with the TIG welding machine clamping mechanism (7), and the threaded centering venting device includes a venting positioning tool (2) and a center column (3).

3. A TIG small-rotation-radius welding machine clamping ventilation positioning device according to claim 2, characterized in that: The oil pipe thin clamping device is connected with the TIG welding machine clamping mechanism (7), and the threaded centering venting device includes a venting positioning tool (2) and a center column (3).

4. A TIG small-rotation-radius welding machine clamping ventilation positioning device according to claim 1, characterized in that: The oil pipe thin clamping device is connected with the TIG welding machine clamping mechanism (7), and the threaded centering venting device includes a venting positioning tool (2) and a center column (3).

5. A TIG small-rotation-radius welding machine clamping ventilation positioning device according to claim 1, characterized in that: The oil pipe thin clamping device is connected with the TIG welding machine clamping mechanism (7), and the threaded centering venting device includes a venting positioning tool (2) and a center column (3).

6. A TIG small-radius welding machine clamping ventilation positioning device according to claim 5, characterized in that: The oil pipe thin clamping device is connected with the TIG welding machine clamping mechanism (7), and the threaded centering venting device includes a venting positioning tool (2) and a center column (3).

7. A TIG small-rotation-radius welding machine clamping ventilation positioning device according to claim 1, characterized in that: The oil pipe thin clamping device is connected with the TIG welding machine clamping mechanism (7), and the threaded centering venting device includes a venting positioning tool (2) and a center column (3).

8. A TIG small-rotation-radius welding machine clamping ventilation positioning device according to claim 1, characterized in that: The oil pipe thin clamping device is connected with the TIG welding machine clamping mechanism (7), and the threaded centering venting device includes a venting positioning tool (2) and a center column (3). The oil pipe thin clamping device is connected with the TIG welding machine clamping mechanism (7), and the threaded centering venting device includes a venting positioning tool (2) and a center column (3). The oil pipe thin clamping device is connected with the TIG welding machine clamping mechanism (7), and the threaded centering venting device includes a venting positioning tool (2) and a center column (3). The oil pipe thin clamping device is connected with the TIG welding machine clamping mechanism (7), and the threaded centering venting device includes a venting positioning tool (2) and a center column (3).

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