Plasma arc welding machine for stainless steel pipe production

Abstract

The utility model discloses a plasma arc welding machine for stainless steel pipe production, which belongs to the field of steel pipe production and comprises a base, a welding mechanism arranged above the base, two groups of jacking components symmetrically arranged at two ends of the top of the base, an auxiliary supporting component arranged above the base and two groups of supporting driving mechanisms symmetrically arranged at the top of the base. The supporting driving mechanism comprises an upper driving assembly and a lower driving assembly, the lower driving assembly is fixedly connected to the top of the base, a mounting frame is fixedly connected to the top of the base, and the upper driving assembly is mounted on the mounting frame through a lifting assembly. The stainless steel pipe welding device has the beneficial effects that the upper driving assembly and the lower driving assembly are arranged, the upper driving assembly is driven by the lifting assembly to move downwards, the upper driving wheel abuts against the stainless steel pipe, friction between the stainless steel pipe and the driving wheel is increased, the rotating stability of the stainless steel pipe is guaranteed, and the welding quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe production, and in particular to a plasma arc welding machine for the production of stainless steel pipes. Background Technology

[0002] Plasma arc welding is a welding method based on the traditional TIG process, which uses a powerful cooling nozzle to generate a compressed arc, resulting in a more concentrated arc, higher energy, and faster welding speed. By using a water-cooled nozzle to restrain the arc, a plasma arc with a high energy density is obtained for welding. Plasma arc welding has the advantages of being less prone to oxidation of the weldment, being easy to operate, being easy to achieve full-position automation, having a small heat-affected zone, and being less prone to deformation of the weldment. Plasma arc welding machines are used for welding in this process.

[0003] In the production of stainless steel pipes, it is sometimes necessary to weld two pipes together. In the existing technology, when welding two pipes, the two pipes are usually placed on two sets of drive wheels, and then the drive wheels drive the pipes to rotate slowly, which is convenient for welding different positions. However, if only the two sets of drive wheels at the bottom are used for driving, the drive wheels may slip, causing the pipes to rotate at different speeds, which affects the stability of the pipe rotation. Utility Model Content

[0004] The purpose of this invention is to provide a plasma arc welding machine for the production of stainless steel pipes in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A plasma arc welding machine for producing stainless steel pipes includes a base, a welding mechanism on top of the base, two sets of clamping components symmetrically arranged at both ends of the top of the base, an auxiliary support component on top of the base, and two sets of support drive mechanisms symmetrically arranged on the top of the base. The support drive mechanism includes upper and lower drive components. The lower drive component is fixedly connected to the top of the base, and a mounting frame is fixedly connected to the top of the base. The upper drive component is mounted on the mounting frame via a lifting component.

[0007] Preferably, the drive assembly includes a mounting box, with a bidirectional lead screw rotatably connected between the inner walls of the mounting box. One end of the bidirectional lead screw extends out of the mounting box and is fixedly connected to a rotating wheel. Two sliders are threaded onto the bidirectional lead screw. The sliders slide along the side wall of the mounting box in a front-back direction. A mounting shell is fixedly connected to the sliders. A rotary motor is fixedly connected to one side of the mounting shell. The output end of the rotary motor is connected to a drive wheel via a coupling. The drive wheel is rotatably connected between the inner walls of the mounting shell.

[0008] Preferably, the lifting assembly includes a hydraulic cylinder, which is fixedly connected to the mounting bracket, the lower mounting box is fixedly connected to the top of the base, and the upper mounting box is fixedly connected to the bottom of the hydraulic cylinder.

[0009] Preferably, the outer wall of the drive wheel is threaded, and the threads on the drive wheels in the two sets of support drive mechanisms rotate in opposite directions, so that when the stainless steel pipe rotates, the threads on the drive wheel can provide a force for the two stainless steel pipes to move closer to each other.

[0010] Preferably, the welding mechanism includes a support frame, a slide rail is provided on the top rear side of the base, the support frame is slidably connected to the slide rail, a second electric push rod is fixedly connected to the support frame, a horizontal plate is fixedly connected to the bottom of the second electric push rod, and a welding gun is fixedly connected to the bottom of the horizontal plate.

[0011] Preferably, the auxiliary support assembly includes a support seat slidably connected to the top of the base, the top of the support seat having an arc-shaped placement groove, and a transmission rod fixedly connected between the support seat and the support frame.

[0012] Preferably, the clamping assembly includes a vertical plate fixedly connected to the top of the base, a first electric push rod fixedly connected to the side wall of the vertical plate, and a push plate fixedly connected to the end of the first electric push rod.

[0013] The beneficial effects are as follows: It is equipped with two sets of drive components, one above the other. The upper drive component is driven to move downward by the lifting component, so that the upper drive wheel presses against the stainless steel pipe, increasing the friction between the stainless steel pipe and the drive wheel, ensuring the rotational stability of the stainless steel pipe and improving the welding quality.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of a plasma arc welding machine for producing stainless steel pipes according to the present invention;

[0017] Figure 2 This is a front view of a plasma arc welding machine for producing stainless steel pipes as described in this utility model;

[0018] Figure 3 This is a top view of a plasma arc welding machine for producing stainless steel pipes according to the present invention.

[0019] Figure 4 This is a left view of the support drive mechanism of a plasma arc welding machine for producing stainless steel pipes according to the present invention.

[0020] Figure 5 This is a left view of the welding structure and auxiliary support components of a plasma arc welding machine for producing stainless steel pipes, as described in this utility model.

[0021] Figure 6 This is a schematic diagram of the internal structure of the mounting box for a plasma arc welding machine used in the production of stainless steel pipes, as described in this utility model.

[0022] The reference numerals in the attached drawings are explained as follows: 1. Base; 201. Mounting box; 202. Two-way lead screw; 203. Rotary wheel; 204. Slider; 205. Mounting shell; 206. Rotary motor; 207. Drive wheel; 208. Mounting bracket; 209. Hydraulic cylinder; 301. Vertical plate; 302. First electric push rod; 303. Push plate; 401. Support frame; 402. Second electric push rod; 403. Horizontal plate; 404. Welding torch; 501. Support base; 502. Transmission rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., 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.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1-6As shown, a plasma arc welding machine for producing stainless steel pipes includes a base 1. A welding mechanism is arranged above the base 1. The welding mechanism includes a support frame 401. A slide rail is arranged on the rear side of the top of the base 1. The support frame 401 is slidably connected to the slide rail. A second electric push rod 402 is fixedly connected to the support frame 401. A horizontal plate 403 is fixedly connected to the bottom of the second electric push rod 402. A welding torch 404 is fixedly connected to the bottom of the horizontal plate 403. The support frame 401 is slidably connected to the slide rail, which facilitates fine-tuning of the position of the welding torch 404 according to the different welding positions required. The plasma arc welding machine body is arranged at the rear of the base 1. The welding torch 404 is connected to the plasma arc welding machine body. The plasma arc welding machine body adopts existing technology and will not be described in detail.

[0027] Two sets of clamping components are symmetrically arranged at both ends of the top of the base 1. The clamping components include a vertical plate 301 bolted to the top of the base 1. A first electric push rod 302 is fixedly connected to the side wall of the vertical plate 301. A push plate 303 is fixedly connected to the end of the first electric push rod 302. After the two steel pipes are placed, the push plate 303 is moved towards each other by controlling the first electric push rod 302, so that the end faces of the two steel pipes to be welded are pressed together.

[0028] An auxiliary support assembly is provided above the base 1. The auxiliary support assembly includes a support seat 501 that is slidably connected to the top of the base 1. The top of the support seat 501 has an arc-shaped placement groove. A transmission rod 502 is fixedly connected between the support seat 501 and the support frame 401. When the support frame 401 moves, the transmission rod 502 drives the support seat 501 to move, thereby finely adjusting the position of the support seat 501.

[0029] Two sets of support drive mechanisms are symmetrically arranged on the top of the base 1. The support drive mechanism includes two sets of drive components, one above the other. The lower drive component is fixedly connected to the top of the base 1. A mounting bracket 208 is fixedly connected to the top of the base 1. The upper drive component is mounted on the mounting bracket 208 through a lifting component.

[0030] The drive assembly includes a mounting box 201. A bidirectional lead screw 202 is rotatably connected between the inner walls of the mounting box 201. One end of the bidirectional lead screw 202 extends out of the mounting box 201 and is fixedly connected to a rotating wheel 203. Two sliders 204 are threadedly connected to the bidirectional lead screw 202. The sliders 204 slide along the side wall of the mounting box 201 in a front-back direction. A mounting shell 205 is fixedly connected to the sliders 204. A rotary motor 206 is fixedly connected to one side of the mounting shell 205. The output end of the rotary motor 206 is connected to a drive wheel 207 through a coupling. The drive wheel 207 is rotatably connected between the inner walls of the mounting shell 205. The outer wall of the drive wheel 207 is threaded, and the threads on the drive wheels 207 in the two sets of support drive mechanisms rotate in opposite directions. This allows the threads on the drive wheels 207 to provide a force that brings the two stainless steel pipes closer together when the stainless steel pipes rotate, providing an auxiliary effect for the two pipes to be pressed together and ensuring welding quality.

[0031] The lifting assembly includes a hydraulic cylinder 209, which is fixedly connected to the mounting bracket 208. The lower mounting box 201 is fixedly connected to the top of the base 1, and the upper mounting box 201 is fixedly connected to the bottom of the hydraulic cylinder 209. The upper mounting box 201 is driven to move downward by the hydraulic cylinder 209, and the two steel pipes are pressed together by the upper drive wheel 207.

[0032] Working principle: In use, the two steel pipe sections to be welded are first placed between the two sets of drive wheels 207 below, and the support base 501 supports the two steel pipe sections at the welding points. By controlling the first electric push rod 302, the two sets of push plates 303 are moved closer to each other, so that the two steel pipe sections are pressed together. Then, by controlling the hydraulic cylinder 209, the upper drive assembly is moved downward, so that the upper drive wheel 207 presses against the stainless steel pipe, increasing the friction between the stainless steel pipe and the drive wheel 207, ensuring the rotational stability of the stainless steel pipe, and improving the welding quality. Then, the push plate 303 moves away from the steel pipe, and the steel pipe... The pipe is detached, and the second electric push rod 402 moves the horizontal plate 403 downward, so that the welding gun 404 comes into contact with the place to be welded. The rotary motor 206 is started, and the rotary motor 206 drives the mounting shell 205 to rotate, so that the two sections of steel pipe to be welded rotate synchronously in the same direction. The welding gun 404 is started to start welding. The double-acting screw 202 is rotated by the rotating wheel 203. The double-acting screw 202 drives the two sliders 204 to move the mounting shell 205 and the drive wheel 207 in a direction that is closer to or further away from each other, so that the distance between the two drive wheels 207 on the same mounting box 201 can be adjusted according to the diameter of the steel pipe.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A plasma arc welding machine for producing stainless steel pipes, comprising a base (1), a welding mechanism disposed above the base (1), two sets of clamping components symmetrically disposed at both ends of the top of the base (1), and an auxiliary support component disposed above the base (1), characterized in that: The top of the base (1) is symmetrically provided with two sets of support drive mechanisms. The support drive mechanism includes two sets of drive components, one above the other. The lower drive component is fixedly connected to the top of the base (1). The top of the base (1) is fixedly connected to a mounting bracket (208). The upper drive component is mounted on the mounting bracket (208) through a lifting component.

2. A plasma arc welding machine for stainless steel pipe production as claimed in claim 1, characterized in that: The drive assembly includes a mounting box (201), and a bidirectional lead screw (202) is rotatably connected between the inner walls of the mounting box (201). One end of the bidirectional lead screw (202) extends out of the mounting box (201) and is fixedly connected to a rotating wheel (203). Two sliders (204) are threadedly connected to the bidirectional lead screw (202). The sliders (204) slide along the side wall of the mounting box (201) in a front-back direction. A mounting shell (205) is fixedly connected to the sliders (204). A rotary motor (206) is fixedly connected to one side of the mounting shell (205). The output end of the rotary motor (206) is connected to a drive wheel (207) through a coupling. The drive wheel (207) is rotatably connected between the inner walls of the mounting shell (205).

3. A plasma arc welding machine for the production of stainless steel pipes according to claim 2, characterized in that: The lifting assembly includes a hydraulic cylinder (209), which is fixedly connected to the mounting bracket (208). The lower mounting box (201) is fixedly connected to the top of the base (1), and the upper mounting box (201) is fixedly connected to the bottom of the hydraulic cylinder (209).

4. A plasma arc welding machine for the production of stainless steel pipes according to claim 2, characterized in that: The outer wall of the drive wheel (207) is threaded, and the threads on the drive wheels (207) in the two sets of support drive mechanisms rotate in opposite directions, so that when the stainless steel pipe rotates, the threads on the drive wheel (207) can provide a force for the two stainless steel pipes to move closer to each other.

5. A plasma arc welding machine for stainless steel pipe production as claimed in claim 1, wherein: The welding mechanism includes a support frame (401), a slide rail is provided on the top rear side of the base (1), the support frame (401) is slidably connected to the slide rail, a second electric push rod (402) is fixedly connected to the support frame (401), a horizontal plate (403) is fixedly connected to the bottom of the second electric push rod (402), and a welding gun (404) is fixedly connected to the bottom of the horizontal plate (403).

6. A plasma arc welding machine for the production of stainless steel pipes according to claim 5, characterized in that: The auxiliary support assembly includes a support base (501) slidably connected to the top of the base (1). The top of the support base (501) is provided with an arc-shaped placement groove. A transmission rod (502) is fixedly connected between the support base (501) and the support frame (401).

7. A plasma arc welding machine for stainless steel pipe production as claimed in claim 1, wherein: The clamping assembly includes a vertical plate (301) fixedly connected to the top of the base (1), a first electric push rod (302) fixedly connected to the side wall of the vertical plate (301), and a push plate (303) fixedly connected to the end of the first electric push rod (302).

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