Automatic laser welding device suitable for aluminum square tube

Abstract

According to the automatic laser welding device suitable for the aluminum square tube, a welding edge is formed on the periphery of the top of the aluminum square tube, the welding device comprises a working platform, a leaning grid and a welding part, the leaning grid and the welding part are arranged on the working platform, and the leaning grid is provided with a first leaning grid face and a second leaning grid face. The extension directions of the first leaning grid surface and the second leaning grid surface intersect, and the aluminum square tube is supported on the working platform from the bottom surface and correspondingly abuts against the first leaning grid surface and the second leaning grid surface from the two adjacent side surfaces; the welding part comprises a laser welding gun and a driving part. On one hand, the two adjacent side faces of the aluminum square pipe are positioned based on the first leaning grid face and the second leaning grid face, automatic continuous welding of all welding edges on the aluminum air pipe is achieved under the movement of the laser welding gun, and therefore various welding defects caused by manual operation are effectively avoided, and the welding quality is effectively improved; on the other hand, operation is easy and convenient, and welding efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the field of welding devices, and in particular relates to an automatic laser welding device suitable for aluminum square tubes. Background Art

[0002] In the semiconductor industry, aluminum square tubes are used on the racks of many equipment as pipes for collecting and discharging exhaust gas to maintain fresh air in the working environment.

[0003] At present, according to the actual production process requirements, the exhaust gas from the semiconductor processing equipment is collected step by step, which means that the size of the pipelines at each level is constantly changing, and the end faces of the pipelines at each level need to be provided with plugs and fixed by welding. Since the cross-sectional sizes of the pipelines at each level are of many specifications and the sizes of the plugs used are different, manual welding is generally used to weld the plugs to the end faces of the pipelines.

[0004] However, in the actual welding process, manual welding is overly dependent on the level and mental state of the welder. The welding execution and speed are not easy to control, which can easily cause inconsistent weld depth, uneven welds, and defects such as cold welds. In addition, the arc starting and movement cannot be strictly synchronized during welding, and the weld pit will be too large at the arc starting point (the arc has been started at the beginning, but the hand has not moved, and the hand has stopped at the end, but the arc has not stopped yet); in addition, when the welder holds the welding gun and welds to the corner of the pipe, there will be a pause, which can easily melt the plate into the pit and require manual repair, which is time-consuming, labor-intensive and inefficient. Summary of the invention

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a new automatic laser welding device suitable for aluminum square tubes.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An automatic laser welding device suitable for an aluminum square tube, wherein welding edges are formed around the top of the aluminum square tube, and the extension directions of two adjacent welding edges on the aluminum square tube are defined as an X-axis and a Y-axis respectively, and the height direction of the aluminum square tube is a Z-axis. The welding device comprises a working platform, a backrest and a welding component respectively arranged on the working platform, wherein the backrest has a first backrest surface and a second backrest surface, and the extension directions of the first backrest surface and the second backrest surface are arranged to intersect, and the aluminum square tube is supported on the working platform from the bottom surface and abuts against the first backrest surface and the second backrest surface from adjacent two side surfaces; the welding component comprises a laser welding gun and a driving component, wherein the laser welding gun is movably arranged above the backrest, and the driving component is used to drive the laser welding gun to move along the X-axis and Y-axis directions respectively, and the formed welding path coincides with the welding edges around the aluminum square tube.

[0008] According to a specific implementation and preferred aspect of the utility model, when abutting, the first grid-resting surface and the second grid-resting surface are parallel and closely connected to the adjacent two side surfaces on the aluminum square tube, thereby improving the stability of the aluminum square tube and effectively reducing the probability of the aluminum square tube shaking or deflecting due to external force during welding.

[0009] Preferably, the fence includes a first fence bar and a second fence bar extending along the X-axis and Y-axis directions respectively, wherein the first fence bar and the second fence bar form a first fence surface and a second fence surface from the inner side respectively. Here, the structure is simple, and it is easy to install and implement.

[0010] Specifically, the first grid bar and the second grid bar are arranged to intersect at one end. Here, it can be applied to aluminum square tubes of different specifications. During operation, only the side edges of the aluminum square tube in the height direction need to be relatively matched with the first and second grid bars, so that the adjacent two sides of the aluminum square tube can be quickly abutted against the two side grid surfaces, which is simple and convenient to operate.

[0011] Preferably, the lengths of the first backing bar and the second backing bar are correspondingly greater than the lengths of the adjacent two side edges of the aluminum square tube.

[0012] According to another specific implementation and preferred aspect of the utility model, the laser welding gun is arranged to be tilted up and down.

[0013] Preferably, the angle between the laser welding gun and the horizontal plane is 70° to 80°. This makes it easy to observe the weld and also prevents the shielding gas on the welding gun from blowing away the weld molten metal.

[0014] According to another specific implementation and preferred aspect of the utility model, the driving member includes a first guide rail extending along the X-axis direction, a second guide rail slidably connected to the first guide rail and extending along the Y-axis direction, and a connecting seat slidably connected to the second guide rail, and the laser welding gun is fixedly connected to the connecting seat. Here, the structure is simple and easy to assemble.

[0015] Preferably, a connecting groove extending upward from the bottom surface is formed on the connecting seat, and the laser welding gun is inserted and fixed in the connecting groove from bottom to top.

[0016] In addition, the driving member also includes a third guide rail fixed on the working platform and extending along the Z-axis direction, and the first guide rail is slidably connected to the third guide rail. Here, it is convenient to control the laser welding focal length according to the actual working conditions to ensure the stability of the welding depth.

[0017] Due to the implementation of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] The prior art adopts manual welding, and the welding execution degree and speed are not easy to control, which easily causes the defects of inconsistent weld depth, uneven weld and false weld. Moreover, the arc starting and movement cannot be strictly synchronized during welding, and the weld pit will be too large at the arc starting point (the arc has been started at the beginning, but the hand has not moved, and the hand has stopped at the end, but the arc has not stopped yet); in addition, when the welder holds the welding gun and welds to the corner of the pipe, there will be a pause, which is easy to melt the plate into the pit, and manual repair is required, which is time-consuming and labor-intensive, and inefficient; and the present application is an overall design of the structure of the automatic laser welding device suitable for aluminum square tubes, which cleverly solves the shortcomings and defects of the prior art. After adopting the laser welding device, the aluminum square tube is placed on the working platform, and the four sides of the top of the aluminum square tube are welding edges, and then the aluminum square tube is moved so that the adjacent two sides of the aluminum square tube are respectively against the first grid surface and the second grid surface, and finally the laser welding gun is driven by the driving member to move along the X-axis and Y-axis directions respectively, so that the welding path formed by the laser welding gun coincides with the welding edges around the aluminum square tube to complete the welding. Therefore, compared with the prior art, the utility model, on the one hand, forms a positioning based on the first and second grids facing the adjacent two sides of the aluminum square tube, and realizes automatic and continuous welding of each welding edge on the aluminum air duct under the movement of the laser welding gun, thereby effectively avoiding various welding defects caused by human operation and effectively improving the welding quality; on the other hand, the operation is simple and convenient, and the welding efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the automatic laser welding device suitable for aluminum square tubes of the utility model;

[0020] Figure 2 It is a front view schematic diagram of the automatic laser welding device applicable to aluminum square tubes of the utility model;

[0021] Figure 3 for Figure 2 Schematic diagram of the left side;

[0022] Figure 4 for Figure 2 Schematic diagram of top view;

[0023] Among them: 1. Working platform;

[0024] 2, fence; 21, first fence bar; m1, first fence surface; 22, second fence bar; m2, second fence surface;

[0025] 3. welding parts; 30. laser welding gun; 31. driving member; 311. first guide rail; 312. second guide rail; 313. third guide rail; 314. connecting seat; c. connecting groove;

[0026] G. Aluminum square tube. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0032] like Figures 1 to 4 As shown, the automatic laser welding device suitable for aluminum square tubes involved in this embodiment includes a working platform 1, a guardrail 2 and a welding component 3 respectively arranged on the working platform 1; four welding edges are formed around the top of the aluminum square tube G in this embodiment, and the extension directions of two adjacent welding edges on the aluminum square tube G are defined as the X-axis and the Y-axis respectively, and the height direction of the aluminum square tube G is the Z-axis.

[0033] Specifically, the working platform 1 forms a horizontal working surface from the top, and the fence 2 and the welding component 3 are both arranged on the horizontal working surface.

[0034] In this example, the guardrail 2 includes a first guard bar 21 and a second guard bar 22 which are respectively fixedly connected to the working platform 1, wherein the first guard bar 21 and the second guard bar 22 extend along the X-axis and the Y-axis directions respectively, and the first guard bar 21 and the second guard bar 22 respectively form a first guard surface m1 and a second guard surface m2 from the inner side, and the extension directions of the first guard surface m1 and the second guard surface m2 are arranged to intersect, and the aluminum square tube G is supported on the working platform 1 from the bottom surface and abuts against the first guard surface m1 and the second guard surface m2 from adjacent two side surfaces.

[0035] In some specific embodiments, when abutting, the first guard surface m1 and the second guard surface m2 are parallel to and fit with the adjacent two side surfaces on the aluminum square tube G; the first guard bar 21 and the second guard bar 22 are intersecting from one end; the lengths of the first guard bar 21 and the second guard bar 22 are correspondingly greater than the lengths of the adjacent two side edges of the aluminum square tube G. In other words, the length of the first guard bar 21 is greater than the length of the side extending along the X-axis direction of the aluminum square tube G, and the length of the second guard bar 22 is greater than the length of the side extending along the Y-axis direction of the aluminum square tube G.

[0036] In this example, the welding component 3 includes a laser welding gun 30 and a driving component 31, wherein the laser welding gun 30 is movably arranged above the grid 2, and the driving component 31 is used to drive the laser welding gun 30 to move along the X-axis and Y-axis directions respectively, and the formed welding path coincides with the welding edges around the aluminum square tube.

[0037] In some specific embodiments, the laser welding gun 30 can be any conventional laser welding gun, wherein the laser welding gun 30 is tilted up and down, and the angle between the laser welding gun 30 and the horizontal plane is 70° to 80°. Preferably, the angle between the laser welding gun 30 and the horizontal plane is 75°.

[0038] In this example, the driving member 31 includes a first guide rail 311 extending along the X-axis direction, a second guide rail 312 slidably connected to the first guide rail 311 and extending along the Y-axis direction, a third guide rail 313 fixed to the working platform 1 and extending along the Z-axis direction, and a connecting seat 314 slidably connected to the second guide rail 312, and the laser welding gun 30 is fixedly connected to the connecting seat 314. As for the specific driving method, it is a conventional technology, which will not be described here, and it is also clear that it can be implemented.

[0039] In some specific embodiments, a connection groove c extending upward from the bottom surface is formed on the connection seat 314, and the laser welding gun 30 is inserted and fixed in the connection groove c from bottom to top; the first guide rail 311 is slidably connected to the third guide rail 313 and adjusted up and down along the Z-axis direction.

[0040] In summary, after adopting the laser welding device, the aluminum square tube is placed on the working platform, and the four sides of the top of the aluminum square tube are welding edges. Then the aluminum square tube is moved and the two adjacent side surfaces of the aluminum square tube are respectively against the first grid surface and the second grid surface. Finally, the laser welding gun is driven by the driving member to move along the X-axis and Y-axis directions respectively, so that the welding path formed by the laser welding gun coincides with the welding edges around the aluminum square tube to complete the welding. Therefore, compared with the prior art, the utility model, on the one hand, forms a positioning for the adjacent two side surfaces of the aluminum square tube based on the first and second grid surfaces, and realizes automatic and continuous welding of each welding edge on the aluminum air duct under the movement of the laser welding gun, thereby effectively avoiding various welding defects caused by human operation and effectively improving the welding quality; on the other hand, the operation is simple and convenient, and the welding efficiency is high; on the third hand, each grid surface is parallel and fitted to the side surface of the aluminum square tube, thereby improving the stability of the aluminum square tube, and effectively reducing the probability of the aluminum square tube shaking or shifting due to external force during welding; on the fourth hand, it can be applied to aluminum square tubes of different specifications. During operation, only the side edges of the aluminum square tube in the height direction need to be relatively matched with the first and second grid bars, so that the adjacent two side surfaces of the aluminum square tube can be quickly abutted against the grid surfaces on both sides, which is simple and convenient to operate; on the fifth hand, through the layout of the inclination angle of the laser welding gun, it is convenient to observe the weld while also preventing the shielding gas on the welding gun from blowing away the weld molten liquid as much as possible; on the sixth hand, it is convenient to control the focal length of laser welding according to actual working conditions to ensure stable welding depth.

[0041] The above detailed description of the utility model is intended to enable people familiar with the technology in this field to understand the content of the utility model and implement it. It is not intended to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An automatic laser welding device suitable for aluminum square tubes, wherein welding edges are formed around the top of the aluminum square tube, and the extension directions of two adjacent welding edges on the aluminum square tube are defined as the X axis and the Y axis respectively, and the height direction of the aluminum square tube is the Z axis, characterized in that: The welding device includes a working platform, a backrest and a welding component respectively arranged on the working platform, wherein the backrest has a first backrest surface and a second backrest surface, and the extension directions of the first backrest surface and the second backrest surface are arranged to intersect, and the aluminum square tube is supported on the working platform from the bottom surface and abuts against the first backrest surface and the second backrest surface from adjacent two side surfaces; the welding component includes a laser welding gun and a driving component, wherein the laser welding gun is movably arranged above the backrest, and the driving component is used to drive the laser welding gun to move along the X-axis and Y-axis directions respectively, and the formed welding path coincides with the welding edges around the aluminum square tube.

2. The automatic laser welding device for aluminum square tubes according to claim 1 is characterized in that: When abutting, the first grid-resting surface and the second grid-resting surface are parallel to and closely fitted with the adjacent two side surfaces on the aluminum square tube.

3. The automatic laser welding device for aluminum square tubes according to claim 1 is characterized in that: The fence includes a first fence bar and a second fence bar extending along the X-axis and Y-axis directions respectively, wherein the first fence bar and the second fence bar form the first fence surface and the second fence surface from the inner side respectively.

4. The automatic laser welding device for aluminum square tubes according to claim 3 is characterized in that: The first fence bar and the second fence bar are arranged to intersect at one end.

5. The automatic laser welding device for aluminum square tubes according to claim 3 is characterized in that: The lengths of the first backing bar and the second backing bar are correspondingly greater than the lengths of the adjacent two side edges of the aluminum square tube.

6. The automatic laser welding device for aluminum square tubes according to claim 1 is characterized in that: The laser welding gun is arranged to be tilted up and down.

7. The automatic laser welding device for aluminum square tubes according to claim 6 is characterized in that: The angle between the laser welding gun and the horizontal plane is 70° to 80°.

8. The automatic laser welding device for aluminum square tubes according to claim 1, 6 or 7, characterized in that: The driving member includes a first guide rail extending along the X-axis direction, a second guide rail slidably connected to the first guide rail and extending along the Y-axis direction, and a connecting seat slidably connected to the second guide rail, and the laser welding gun is fixedly connected to the connecting seat.

9. The automatic laser welding device for aluminum square tubes according to claim 8 is characterized in that: The connection seat is formed with a connection groove extending upward from the bottom surface, and the laser welding gun is inserted and fixed in the connection groove from bottom to top.

10. The automatic laser welding device for aluminum square tubes according to claim 8, characterized in that: The driving member also includes a third guide rail fixed on the working platform and extending along the Z-axis direction, and the first guide rail is slidably connected to the third guide rail.

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