Stainless steel pipe welding device

Abstract

The utility model discloses a stainless steel tube welding device, which relates to the technical field of stainless steel tube processing and comprises a mounting frame and a welding gun, an adjusting shaft is rotatably mounted on the mounting frame, an adjusting circular plate is mounted in the middle of the adjusting shaft, and the welding gun is mounted on the adjusting circular plate; when a steel pipe passes through the welding end of the welding gun, the welding gun conducts welding operation on the steel pipe, and when the angle between the welding gun and the steel pipe needs to be adjusted, the adjusting shaft is adjusted to rotate on the mounting frame, so that the adjusting shaft drives the adjusting circular plate to rotate, the adjusting circular plate drives the welding gun to rotate, and therefore the welding angle between the welding gun and the steel pipe is adjusted; and the welding effect of the welding gun on the steel pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel pipe processing and manufacturing, in particular to a stainless steel pipe welding device. Background Art

[0002] As is known, stainless steel pipe is a hollow long round steel material, which is widely used in industrial pipelines and mechanical structural parts such as petroleum, chemical, medical, food, light industry, mechanical instruments, etc. In addition, when the bending and torsional strengths are the same, the weight is light, so it is also widely used in the manufacture of mechanical parts and engineering structures. It is also commonly used as furniture and kitchen utensils. In the production and processing of stainless steel pipes, it is necessary to coil and weld the stainless steel strip, so that the steel strip is coiled into a ring and then welded.

[0003] For example, the patent application with announcement number CN210172828U, publication date March 24, 2020, and titled "A straight-through stainless steel pipe welding device", the utility model relates to a straight-through stainless steel pipe welding device, including a workbench, a fixing fixture installed on the workbench, a driving mechanism for driving the fixing fixture to move, a welding gun for welding a workpiece, an external protective air gun for providing an external protective gas to the workpiece, and an internal ventilation mechanism for providing an internal protective gas to the workpiece; the driving mechanism includes a track installed on the workbench and a translation cylinder connected to the fixing fixture, the fixing fixture is installed on the track, and it moves back and forth along the track under the action of the driving mechanism. The straight-through stainless steel pipe welding device provided by the utility model realizes automated welding through a fixing fixture, a driving mechanism and a welding gun. On the other hand, the internal ventilation mechanism and the external protective air gun ensure that the weld of the workpiece is smooth and the welding quality of the workpiece is guaranteed.

[0004] In the prior art, the common stainless steel pipe welding structure generally has a fixed welding gun on a frame. When the steel pipe passes through the welding end of the welding gun, the welding gun welds the steel pipe. However, the fixed setting of the welding gun makes it difficult to adjust the angle between it and the steel pipe, which affects the welding quality of the steel pipe. Utility Model Content

[0005] The utility model aims to provide a stainless steel pipe welding device to solve the above problems in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stainless steel pipe welding device, including a mounting frame and a welding gun, an adjusting shaft is rotatably mounted on the mounting frame, an adjusting circular plate is installed in the middle of the adjusting shaft, and a welding gun is installed on the adjusting circular plate.

[0007] As mentioned above, a first threaded rod is installed on the annular outer wall of the adjusting circular plate, and a threaded sleeve is installed on the end of the welding gun, and the threaded sleeve and the first threaded rod are threadedly connected.

[0008] As mentioned above, one end of the adjusting shaft passes through the mounting frame and is connected to a positioning gear, a return plate is installed on the mounting frame at the bottom end of the positioning gear, a limit rod is slidably installed on the return plate, and the limit rod is inserted and tightly pressed against the positioning gear.

[0009] As mentioned above, the bottom end of the limit rod and the return plate are connected via an elastic member.

[0010] As mentioned above, two square plates are symmetrically arranged on one side of the welding gun on the mounting frame, and two composite wheels are symmetrically arranged between the two square plates in a rotationally matched manner.

[0011] In the above, two through slots are symmetrically formed on the two square plates, a second threaded rod is slidably installed in each of the four through slots, and the four second threaded rods are rotationally connected to their corresponding composite wheels.

[0012] As mentioned above, each of the four second threaded rods is threadedly connected with a nut.

[0013] As mentioned above, the middle parts of the two composite wheels are both semicircular concave ring structures, and the two composite wheels are both tightly pressed against the outer wall of the steel pipe.

[0014] As mentioned above, two extrusion wheels are rotatably mounted on the mounting frame.

[0015] As mentioned above, the middle parts of the two extrusion wheels are both annular semicircular structures, and the two extrusion wheels both extrude the outer wall of the steel pipe.

[0016] The beneficial effect of the utility model is that when the steel pipe passes through the welding end of the welding gun, the welding gun performs welding operation on the steel pipe. When it is necessary to adjust the angle between the welding gun and the steel pipe, the adjusting shaft is rotated on the mounting frame, so that the adjusting shaft drives the adjusting circular plate to rotate, and the adjusting circular plate drives the welding gun to rotate, thereby adjusting the welding angle between the welding gun and the steel pipe, thereby improving the welding effect of the welding gun on the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1It is a partial three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 For this utility model Figure 1 A schematic diagram of a partial cross-sectional structure;

[0020] Figure 3 It is a schematic diagram of the partial cross-section structure of the composite wheel of the utility model;

[0021] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the practical limit rod and the positioning gear.

[0022] Description of reference numerals:

[0023] 1. Mounting frame; 2. Welding gun; 3. Adjusting shaft; 4. Adjusting circular plate; 5. First threaded rod; 6. Threaded sleeve; 7. Positioning gear; 8. Return plate; 9. Limit rod; 10. Elastic member; 11. Square plate; 12. Composite wheel; 13. Through groove; 14. Second threaded rod; 15. Nut; 16. Extrusion wheel. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] like Figures 1 to 4 As shown, a stainless steel pipe welding device provided by an embodiment of the utility model includes a mounting frame 1 and a welding gun 2. An adjusting shaft 3 is rotatably mounted on the mounting frame 1, an adjusting circular plate 4 is mounted in the middle of the adjusting shaft 3, and the welding gun 2 is mounted on the adjusting circular plate 4.

[0026] Specifically, the mounting frame 1 is a frame for rolling and welding the steel strip, and a steel pipe forming device is arranged on the mounting frame 1 (that is, when the steel strip passes through the steel pipe forming device, the steel pipe forming device rolls the steel strip into a tubular structure, and there is a welding seam between the tubular structures, and the welding seam is welded by the welding gun 2 to form a steel pipe). The adjusting shaft 3 is rotatably installed on the mounting frame 1, and the adjusting shaft 3 can be rotated and positioned on the mounting frame 1. When it is necessary to adjust the angle between the welding gun 2 and the steel pipe welding seam, the adjusting shaft 3 is driven to rotate on the mounting frame 1, and the adjusting shaft 3 drives the adjusting circular plate 4 to rotate, and the adjusting circular plate 4 drives the welding gun 2 to rotate until the angle between the welding gun 2 and the steel pipe welding seam reaches the optimal welding angle, and then the adjusting shaft 3 is positioned so that the welding gun 2 can weld the steel pipe welding seam. No rotation occurs when the welding gun 2 is in operation, thereby ensuring the stability of the welding seam of the steel pipe by the welding gun 2, thereby improving the welding effect of the steel pipe; in the prior art, the common stainless steel pipe welding structure is generally a fixed welding gun arranged on a frame, and when the steel pipe passes through the welding end of the welding gun, the welding gun welds the steel pipe, but the fixed arrangement of the welding gun makes it difficult to adjust the angle between the welding gun and the steel pipe, thereby affecting the welding quality of the steel pipe; in the present embodiment, when the steel pipe passes through the welding end of the welding gun 2, the welding gun 2 welds the steel pipe, and when it is necessary to adjust the angle between the welding gun 2 and the steel pipe, the adjusting shaft 3 is rotated on the mounting frame 1, so that the adjusting shaft 3 drives the adjusting circular plate 4 to rotate, and the adjusting circular plate 4 drives the welding gun 2 to rotate, thereby adjusting the welding angle between the welding gun 2 and the steel pipe, thereby improving the welding effect of the welding gun 2 on the steel pipe.

[0027] Furthermore, a first threaded rod 5 is installed on the annular outer wall of the adjusting circular plate 4, and a threaded sleeve 6 is installed on the end of the welding gun 2, and the threaded sleeve 6 and the first threaded rod 5 are threadedly connected. Specifically, when it is necessary to adjust the distance between the welding gun 2 and the steel pipe weld, the staff uses a tool to screw the threaded sleeve 6 before welding with the welding gun 2, so that the threaded sleeve 6 rotates on the first threaded rod 5, and then adjusts the overall length of the threaded sleeve 6 and the first threaded rod 5, until the threaded sleeve 6 drives the welding gun 2 to move to a suitable distance between the steel pipe weld, and stops rotating the threaded sleeve 6, so that the distance between the welding gun 2 and the steel pipe weld can be adjusted, thereby improving the welding effect of the welding gun 2 on the steel pipe weld.

[0028] Furthermore, one end of the adjusting shaft 3 passes through the mounting frame 1 and is connected to a positioning gear 7. A return plate 8 is installed on the mounting frame 1 at the bottom end of the positioning gear 7. A limiting rod 9 is slidably installed on the return plate 8. The limiting rod 9 is plugged and tightly connected to the positioning gear 7; the bottom end of the limiting rod 9 and the return plate 8 are connected by an elastic member 10. Specifically, when it is necessary to adjust the angle between the welding gun 2 and the welding seam of the steel pipe, the staff pulls the limiting rod 9 so that the limiting rod 9 no longer limits the positioning gear 7, and the limiting rod 9 is in contact with the elastic member 10 (the elastic member 10 is capable of telescopic and retractable The staff then rotates the adjusting shaft 3, so that the adjusting shaft 3 drives the adjusting circular plate 4 to rotate, and the adjusting circular plate 4 drives the welding gun 2 to rotate, until the welding gun 2 rotates to the best position of the welding angle with the steel pipe welding seam, and the staff releases the pulling on the limiting rod 9, and under the rebound effect of the elastic member 10, the elastic member 10 drives the limiting rod 9 to position the positioning gear 7, so that the adjusting shaft 3, the adjusting circular plate 4 and the welding gun 2 no longer rotate, so that the welding of the steel pipe welding seam by the welding gun 2 is more stable, and the welding effect of the welding gun 2 on the steel pipe welding seam is improved.

[0029] Preferably, two square plates 11 are symmetrically arranged on the mounting frame 1 on one side of the welding gun 2, and two compound wheels 12 are symmetrically arranged between the two square plates 11 in a rotationally matched manner; two through grooves 13 are symmetrically provided on the two square plates 11, and a second threaded rod 14 is slidably installed in each of the four through grooves 13, and the four second threaded rods 14 are rotationally connected to their corresponding compound wheels 12; a nut 15 is threadedly connected to each of the four second threaded rods 14; the middle parts of the two compound wheels 12 are both semicircular concave annular structures, and the two compound wheels 12 are tightly pressed against the outer wall of the steel pipe. Specifically, before the steel pipe enters the bottom end of the welding gun 2, the steel pipe passes through the middle part of the two compound wheels 12, so that the two compound wheels 12 perform extrusion molding on the steel pipe to prevent the welding seam of the steel pipe from being too large during welding, thereby affecting the welding effect of the steel pipe. ; When the diameter of the steel pipe changes, it is necessary to adjust the spacing between the two composite wheels 12, that is, when the diameter of the steel pipe increases, the spacing between the two composite wheels 12 also increases accordingly. At this time, the staff uses a tool to rotate the nut 15 so that the nut 15 is no longer pressed against the outer wall of the square plate 11, and then moves the second threaded rod 14 to a position in the through groove 13 until the spacing between the two composite wheels 12 reaches the optimal distance. At this time, the staff twists the nut 15 so that the nut 15 is pressed against the outer wall of the square plate 11, thereby limiting the position of the threaded rod and the nut 15 on the composite wheel 12; when the diameter of the steel pipe decreases, the spacing between the two composite wheels 12 also decreases accordingly. The above operation can be repeated to adjust the spacing between the two composite wheels 12, so that the two composite wheels 12 can stably extrude the steel pipe, and the weld of the steel pipe will not become larger during welding.

[0030] Preferably, two extrusion wheels 16 are rotatably mounted on the mounting frame 1; the middle parts of the two extrusion wheels 16 are both annular semicircular structures, and the two extrusion wheels 16 extrude the outer wall of the steel pipe. Specifically, before the steel pipe enters the composite wheel 12, the steel pipe passes through the middle part of the two extrusion wheels 16, so that the two extrusion wheels 16 extrude and shape the steel pipe to prevent the welding seam of the steel pipe from being too large during welding, thereby affecting the welding effect of the steel pipe.

[0031] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A stainless steel pipe welding device, comprising a mounting frame, characterized in that: It also includes a welding gun, wherein an adjusting shaft is rotatably mounted on the mounting frame, an adjusting circular plate is mounted in the middle of the adjusting shaft, and a welding gun is mounted on the adjusting circular plate; A first threaded rod is installed on the annular outer wall of the adjusting circular plate, a threaded sleeve is installed at the end of the welding gun, and the threaded sleeve and the first threaded rod are threadedly connected; One end of the adjusting shaft passes through the mounting frame and is connected to a positioning gear, a return plate is installed on the mounting frame at the bottom end of the positioning gear, a limit rod is slidably installed on the return plate, and the limit rod is inserted and tightly pressed against the positioning gear; The bottom end of the limiting rod and the return plate are connected via an elastic member.

2. A stainless steel pipe welding device according to claim 1, characterized in that: Two square plates are symmetrically arranged on one side of the welding gun on the mounting frame, and two composite wheels are symmetrically arranged between the two square plates in a rotationally matched manner.

3. A stainless steel pipe welding device according to claim 2, characterized in that: Two through slots are symmetrically formed on the two square plates, a second threaded rod is slidably installed in each of the four through slots, and the four second threaded rods are rotationally connected to the corresponding composite wheels.

4. A stainless steel pipe welding device according to claim 3, characterized in that: Each of the four second threaded rods is threadedly connected with a nut.

5. A stainless steel pipe welding device according to claim 2, characterized in that: The middle parts of the two composite wheels are both semicircular concave ring structures, and the two composite wheels are tightly pressed against the outer wall of the steel pipe.

6. A stainless steel pipe welding device according to claim 1, characterized in that: Two extrusion wheels are rotatably mounted on the mounting frame.

7. A stainless steel pipe welding device according to claim 6, characterized in that: The middle parts of the two extrusion wheels are both annular semicircular structures, and the two extrusion wheels both extrude the outer wall of the steel pipe.

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