A fixture for welding and fixing a stainless steel pipe fitting

Abstract

This utility model discloses a clamp for welding and fixing stainless steel pipe fittings, including a chuck for holding the stainless steel pipe fittings. The chuck is mounted on the output end of a hollow motor. An air intake mechanism is installed inside both the chuck and the hollow motor to fill the stainless steel pipe fittings with argon gas. The air intake mechanism includes an air intake pipe with its outlet located inside the stainless steel pipe fitting. The air intake pipe is slidably disposed within a sliding sleeve, which is fixedly installed within a ring plate. The ring plate is fixedly connected to the end of the hollow motor away from the chuck. This utility model provides a clamp that, when using the chuck to hold the pipe fittings for rotary welding, can supply argon gas into the pipe fittings, achieving back-side argon filling and sealing protection of the weld area.

Description

Technical Field

[0001] This utility model relates to a clamp for welding and fixing stainless steel pipe fittings, belonging to the field of welding technology. Background Technology

[0002] Currently, stainless steel pipe fittings are welded using argon purging on the back of the entire pipe to prevent harmful chemical reactions and physical defects in the weld and heat-affected zone, ensuring the corrosion resistance, mechanical properties, and appearance quality of the welded joint.

[0003] However, when using a chuck to hold the pipe fittings for rotary welding, the chuck usually occupies and seals the pipe end, making it impossible to introduce argon gas from the pipe end and form a sealed space, thus making the traditional whole-pipe back argon purging protection impossible.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] To address the shortcomings of the prior art, this utility model provides a clamp for welding and fixing stainless steel pipe fittings. When the pipe fitting is held in a chuck for rotary welding, argon gas can be introduced into the pipe fitting to achieve argon filling on the back side and to achieve sealing protection of the weld area.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: A clamp for welding and fixing stainless steel pipe fittings includes a chuck for clamping the stainless steel pipe fittings. The chuck is mounted on the output end of a hollow motor. An air intake mechanism is installed inside the chuck and the hollow motor for filling the stainless steel pipe fittings with argon gas. The air intake mechanism includes an air intake pipe with its outlet located inside the stainless steel pipe fitting. The air intake pipe is slidably disposed within a sliding sleeve, which is fixedly installed within a ring plate. The ring plate is fixedly connected to the end of the hollow motor away from the chuck.

[0007] Furthermore, the air inlet of the air intake pipe can be connected to an air source.

[0008] Furthermore, the chuck includes a disc body, which has a hollow structure.

[0009] Furthermore, multiple evenly distributed claws are installed on the end face of the disc, and a transmission mechanism is installed inside the disc.

[0010] Furthermore, the hollow motor includes a motor housing, inside which a hollow shaft arranged in a horizontal direction is installed, and an air intake pipe passes through the hollow shaft.

[0011] Furthermore, the hollow shaft is rotatably mounted inside the support sleeve via two bearings on the left and right sides, and the support sleeve is fixedly mounted inside the motor housing.

[0012] Furthermore, a stator support is fixedly installed on the outside of the support sleeve, and a coil stator is fixedly installed on the stator support.

[0013] Furthermore, a rotor support is fixedly installed on one end of the hollow shaft, and a rotor is embedded in the rotor support. The position of the rotor corresponds to the position of the coil stator.

[0014] Furthermore, the chuck body is fixedly mounted on the outside of the rotor support.

[0015] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: One end of the stainless steel pipe fitting is clamped by a chuck, and the hollow motor drives the stainless steel pipe fitting to rotate at a constant speed through the chuck. During the rotation of the stainless steel pipe fitting, the welding torch automatically tracks the welding position and performs welding. During rotary welding, argon gas is introduced into the stainless steel pipe through the air inlet pipe inside the hollow motor and chuck. Argon gas is then introduced into the stainless steel pipe through argon purging protection on the back side to achieve sealing protection of the weld area and prevent oxidation, blackening, and carbonization of the weld inside the pipe.

[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the chuck's structure; Figure 4 This is a schematic diagram of the hollow motor structure; Figure 5 This is a schematic diagram of the intake mechanism.

[0018] In the figure, 1-chuck, 11-disc body, 12-claw; 2-hollow motor, 21-motor housing, 22-hollow shaft, 23-support sleeve, 24-rotor support, 25-stator support; 3-intake mechanism, 31-intake pipe, 32-sliding sleeve, 33-ring plate; 4-stainless steel fittings. Detailed Implementation

[0019] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0020] like Figures 1-5As shown in the figure, this utility model provides a clamp for welding and fixing stainless steel pipe fittings, including a chuck 1. The chuck 1 is used to clamp the stainless steel pipe fitting 4. The chuck 1 is installed on the output end of the hollow motor 2. An air intake mechanism 3 is installed inside the chuck 1 and the hollow motor 2. The air intake mechanism 3 is used to fill the stainless steel pipe fitting 4 with argon gas.

[0021] The air intake mechanism 3 includes an air intake pipe 31, the outlet of which is located inside the stainless steel pipe fitting 4. The air intake pipe 31 is slidably disposed within the sliding sleeve 32. This sliding arrangement allows for flexible adjustment of the air outlet position of the air intake pipe 31. The air intake port of the air intake pipe 31 can be connected to a gas source, which supplies argon gas.

[0022] The sliding sleeve 32 is fixedly installed inside the ring plate 33, and the ring plate 33 is fixedly connected to the end of the hollow motor 2 away from the chuck 1.

[0023] The chuck 1 includes a hollow disc body 11 to facilitate the transverse insertion of the air inlet pipe 31. Multiple evenly distributed jaws 12 are installed inside the end face of the disc body 11. The jaws 12 directly contact and clamp the stainless steel pipe fitting 4. A transmission mechanism is installed inside the disc body 11. The multiple jaws 12 can move simultaneously centripetally or centrifugally to achieve automatic centering and clamping.

[0024] The hollow motor 2 includes a motor housing 21, inside which a hollow shaft 22 arranged in a horizontal direction is installed. An air inlet pipe 31 passes through the hollow shaft 22. The hollow shaft 22 is rotatably installed in a support sleeve 23 through two left and right bearings. The support sleeve 23 is fixedly installed in the motor housing 21.

[0025] A stator support 25 is fixedly installed on the outside of the support sleeve 23, and a coil stator is fixedly installed on the stator support 25; a rotor support 24 is fixedly installed on one end of the hollow shaft 22, and a rotor is embedded in the rotor support 24, with the position of the rotor corresponding to the position of the coil stator.

[0026] After a stable current is applied to the coil stator, a magnetic field is generated, which drives the rotor to rotate, thereby causing the rotor support 24, hollow shaft 22, chuck 1 and stainless steel tube 4 to rotate 360°.

[0027] The disk 11 is fixedly installed on the outside of the rotor support 24.

[0028] The specific working principle of this utility model is as follows: One end of the stainless steel pipe fitting 4 is clamped by the chuck 1, and the hollow motor 2 drives the stainless steel pipe fitting 4 to rotate at a constant speed through the chuck 1; the welding torch is fixed in one position and points to the welding position of the stainless steel pipe fitting 4; during the rotation of the stainless steel pipe fitting 4, the welding torch automatically tracks the welding position and performs welding.

[0029] During the rotary welding process, the air inlet pipe 31, which is installed inside the hollow motor 2 and the chuck 1, sends argon gas into the stainless steel pipe 4. The end of the stainless steel pipe 4 away from the air inlet pipe 31 can be sealed to form a closed space. Through the argon filling protection on the back, oxidation, blackening and carbonization of the weld inside the pipe are avoided.

[0030] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A clamp for welding and fixing stainless steel pipe fittings, characterized in that: Includes a chuck (1), which is used to clamp the stainless steel pipe fitting (4). The chuck (1) is installed on the output end of the hollow motor (2). An air intake mechanism (3) is installed inside the chuck (1) and the hollow motor (2). The air intake mechanism (3) is used to fill the stainless steel pipe fitting (4) with argon gas. The air intake mechanism (3) includes an air intake pipe (31). The outlet of the air intake pipe (31) is located inside the stainless steel pipe fitting (4). The air intake pipe (31) is slidably disposed in the sliding sleeve (32). The sliding sleeve (32) is fixedly installed in the ring plate (33). The ring plate (33) is fixedly connected to the end of the hollow motor (2) away from the chuck (1). The hollow motor (2) includes a motor housing (21), and a hollow shaft (22) arranged in a horizontal direction is installed inside the motor housing (21). An air inlet pipe (31) passes through the hollow shaft (22). The hollow shaft (22) is rotatably installed in a support sleeve (23) through two left and right bearings. The support sleeve (23) is fixedly installed in the motor housing (21). A stator support (25) is fixedly installed on the outside of the support sleeve (23). A coil stator is fixedly installed on the stator support (25). A rotor support (24) is fixedly installed on one end of the hollow shaft (22). A rotor is embedded in the rotor support (24). The position of the rotor corresponds to the position of the coil stator. The disc body (11) of the chuck (1) is fixedly installed on the outside of the rotor support (24).

2. The stainless steel pipe fitting welding and fixing clamp as described in claim 1, characterized in that: The air inlet of the air inlet pipe (31) is connected to the air source.

3. The stainless steel pipe fitting welding and fixing clamp as described in claim 1, characterized in that: The chuck (1) includes a disc body (11), which is a hollow structure.

4. The stainless steel pipe fitting welding and fixing clamp as described in claim 3, characterized in that: Multiple evenly distributed claws (12) are installed on the end face of the disc body (11), and a transmission mechanism is installed inside the disc body (11).

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