Heat insulation chuck structure for preventing undercut in MIG (Metal-Inert Gas) welding

Abstract

The utility model discloses an MIG welding anti-undercut heat insulation chuck structure which comprises an installation frame, a movable frame is arranged on the outer side of the installation frame in a sliding mode, a lifting assembly for driving the movable frame to move up and down is installed on the side face of the installation frame, a fixing frame is fixed to the side face of the movable frame, and an adjusting frame with the position adjustable is arranged on the outer side of the fixing frame. A positioning assembly for positioning the adjusting frame is arranged on the side face of the adjusting frame. According to the MIG welding undercut-preventing heat-insulating chuck structure, a special structure is arranged on the chuck of the clamp, electric arc diffusion can be restrained, the situation that the electric arc burns the edge of the sleeve is avoided, bakelite is embedded in the chuck for heat insulation, heat is prevented from being conducted to the clamp, continuous temperature rise in the welding process is prevented, undercut in the welding process is effectively avoided, and the welding quality is improved. And the temperature change in the welding process is convenient to control, so that the temperatures of all welding beads before and after welding are consistent, the welding process is stable, and the quality of welded sleeve parts is obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding devices, in particular to a MIG welding undercut prevention and heat insulation chuck structure. Background Art

[0002] With the trend of lightweighting in new energy vehicles, a large number of materials such as aluminum alloy profiles and aluminum alloy castings are needed. At the same time, in order to meet the installation requirements of the products on the vehicle body, various mounting sleeves need to be added to the profiles. MIG welding is a commonly used welding method for aluminum profiles, aluminum alloys and other materials. The arc temperature is 9000K during use. When the arc contacts the edge of the sleeve, it is very easy to melt the edge of the product, causing the edge to melt and form a welding pool, resulting in undercutting of the sleeve edge and uneven surface, which requires rework after welding.

[0003] During the welding process, a chuck is needed to fix the sleeve, but the sleeve height is often less than 8mm, generally around 4-8mm, which leads to frequent edge MIG welding bite during the welding process. In addition, the chuck continues to conduct heat after contacting the sleeve during the welding process. As the temperature increases during the welding process, the welding bite is difficult to control, which seriously affects the welding quality and the product qualification rate. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a MIG welding anti-biting heat insulation chuck structure. A special structure is provided on the chuck of the clamp, which can restrain the arc divergence and prevent the arc from burning the edge of the sleeve. The chuck is inlaid with bakelite for heat insulation, blocking the heat conduction to the clamp and preventing continuous temperature increase during welding, so as to effectively avoid biting during the welding process, and facilitate the control of temperature changes during the welding process, so that the temperature of each weld is consistent before and after welding, and the welding process is stable. There is a significant quality improvement for welding sleeve-like parts, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a MIG welding anti-bite heat-insulating chuck structure, comprising a mounting frame, a movable frame is slidingly provided on the outer side of the mounting frame, and a lifting component for driving the movable frame to move up and down is installed on the side of the mounting frame, a fixed frame is fixed on the side of the movable frame, and an adjustable adjustment frame with an adjustable position is provided on the outer side of the fixed frame, and a positioning component for positioning the adjustment frame is provided on the side of the adjustment frame, a mounting plate is fixed on the side of the adjustment frame, an angle-adjustable chuck is rotatably installed on the side of the mounting plate, and bakelite is installed on the upper side of the chuck.

[0006] As a preferred technical solution of the present invention, a connecting plate is fixed to the side of the movable frame, and the lifting assembly includes an electric telescopic cylinder installed on the side of the mounting frame, and the telescopic end of the electric telescopic cylinder is connected to the lower side of the connecting plate.

[0007] As a preferred technical solution of the present invention, a detection module is installed on the side of the connecting plate, and the detection end of the detection module is located at the connection between the connecting plate and the telescopic end of the electric telescopic cylinder.

[0008] As an optimal technical solution of the present invention, the positioning assembly includes a threaded barrel fixed on the upper side of the adjusting frame, and a through hole is opened on the side of the adjusting frame near the threaded barrel. A fastening screw is installed on the inner thread of the threaded barrel, and the lower end of the fastening screw contacts the side of the fixing frame through the through hole.

[0009] As a preferred technical solution of the present invention, a plurality of positioning grooves are provided on the upper side of the fixing frame, and protective pads are fixed in the positioning grooves, and the positioning grooves are adapted to the fastening screws.

[0010] As an optimal technical solution of the present invention, a limiting groove is provided on the side of the adjustment frame, a limiting strip is fixed on the lower side of the fixing frame, the limiting strip is slidably arranged in the limiting groove, and the limiting groove is adapted to the limiting strip.

[0011] As a preferred technical solution of the present invention, a mounting hole is provided at the connection between the chuck and the mounting plate, and a bolt is provided in the mounting hole, and the side surface of the bolt is threadedly connected to a nut located on the lower side of the mounting plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The MIG welding undercut prevention and heat insulation chuck structure of the present invention is equipped with a special structure on the chuck of the clamp, which can restrain the arc divergence and prevent the arc from burning the edge of the sleeve. The chuck is inlaid with bakelite for heat insulation, blocking the heat conduction to the clamp and preventing continuous temperature increase during welding, so as to effectively avoid undercutting during the welding process and facilitate the control of temperature changes during the welding process, so that the temperature of each weld is consistent before and after welding, thereby achieving a stable welding process and significantly improving the quality of welding sleeve-type parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 for Figure 1 Another perspective structural diagram;

[0016] Figure 3 This is a schematic diagram of the structure of the chuck in the utility model;

[0017] Figure 4 for Figure 3 A schematic diagram of the front structure of FIG.

[0018] Figure 5 for Figure 4Schematic diagram of the enlarged structure at point A in the middle.

[0019] In the figure: 1 mounting frame, 2 moving frame, 3 fixed frame, 4 adjusting frame, 5 mounting plate, 6 chuck, 7 bakelite, 8 bolts, 9 nuts, 10 threaded barrel, 11 fastening screw, 12 limit strip, 13 connecting plate, 14 detection module, 15 electric telescopic cylinder, 16 protective pad. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-5 The utility model provides a technical solution: a MIG welding anti-bite heat insulation chuck structure, including a mounting frame 1, a movable frame 2 is slidingly provided on the outer side of the mounting frame 1, and a lifting component for driving the movable frame 2 to move up and down is installed on the side of the mounting frame 1, and a connecting plate 13 is fixed on the side of the movable frame 2. The lifting component includes an electric telescopic cylinder 15 installed on the side of the mounting frame 1, and the telescopic end of the electric telescopic cylinder 15 is connected to the lower side of the connecting plate 13. The movable frame 2 is driven up and down by controlling the operation of the electric telescopic cylinder 15, so that the chuck structure can fix the sleeve on the outside of the profile for welding. The electric telescopic cylinder 15 includes but is not limited to an electric hydraulic cylinder or a servo electric cylinder.

[0022] A detection module 14 is installed on the side of the connecting plate 13, and the detection end of the detection module 14 is located at the connection between the connecting plate 13 and the telescopic end of the electric telescopic cylinder 15. The detection module 14 is preferably a pressure detection sensor. After the chuck mechanism drives the sleeve to contact the profile, the detection module 14 is subjected to external force. The feedback signal from the detection module 14 is convenient for controlling the start and stop of the electric telescopic cylinder 15, making the use of the electric telescopic cylinder 15 convenient.

[0023] A fixing frame 3 is fixed to the side of the movable frame 2, and an adjustable adjustment frame 4 is provided on the outside of the fixing frame 3. The sliding adjustment frame 4 is moved on the outside of the fixing frame 3, which is convenient for adjusting the position of the chuck structure, convenient for sleeve welding at different positions on the outside of the profile, and convenient for the welding process of the sleeve. A positioning component for positioning it is provided on the side of the adjusting frame 4, and the positioning component includes a threaded barrel 10 fixed on the upper side of the adjusting frame 4, and a through hole is opened on the side of the adjusting frame 4 near the threaded barrel 10. A fastening screw 11 is installed on the inner thread of the threaded barrel 10, and the lower end of the fastening screw 11 contacts the side of the fixing frame 3 through the through hole. The adjusting frame 4 is positioned by rotating the fastening screw 11 in the threaded barrel 10 to contact the side of the fixing frame 3, which is convenient for the use of the chuck structure.

[0024] A mounting plate 5 is fixed to the side of the adjustment frame 4, and an angle-adjustable chuck 6 is rotatably mounted on the side of the mounting plate 5, and a bakelite 7 is mounted on the upper side of the chuck 6. The material of the chuck 6 is preferably stainless steel, and the size of the chuck 6 is consistent with the size of the sleeve, reducing arc burning caused by the protruding edge of the sleeve, reducing arc bite, and facilitating the welding of the sleeve. Preferably, the thickness of the bakelite 7 is 2 mm, and the mounting method of the bakelite 7 and the chuck 6 includes but is not limited to being fixed by screws or fixed by adhesive. During use, the bakelite 7 contacts the sleeve, blocking heat conduction to the chuck 6 during welding, preventing the chuck 6 from continuously heating up during welding, so as to effectively avoid welding bite, and facilitate controlling the temperature change during the welding process, so that the temperature of each weld is consistent before and after welding, and achieving a stable welding process.

[0025] Several positioning grooves are provided on the upper side of the fixing frame 3, and protective pads 16 are fixed in the positioning grooves. The positioning grooves facilitate the installation and use of the protective pads 16. The positioning grooves are adapted to the fastening screws 11. When the fastening screws 11 are rotated to contact the fixing frame 3, the fastening screws 11 can be clamped in the positioning grooves and contact the protective pads 16. The provision of the protective pads 16 reduces the wear between the fastening screws 11 and the fixing frame 3.

[0026] A limiting groove is provided on the side of the adjustment frame 4, and a limiting strip 12 is fixed to the lower part of the side of the fixing frame 3. The limiting strip 12 is slidably set in the limiting groove, and the limiting groove is adapted to the limiting strip 12. When the sliding adjustment frame 4 moves outside the fixing frame 3, the limiting strip 12 slides in the limiting groove, and the limiting strip 12 plays a limiting and guiding role for the adjustment frame 4 to prevent the adjustment frame 4 from detaching from the fixing frame 3.

[0027] A mounting hole is provided at the connection between the chuck 6 and the mounting plate 5, and a bolt 8 is provided in the mounting hole. The side of the bolt 8 is threadedly connected to a nut 9 located on the lower side of the mounting plate 5. The angle of the chuck 6 can be adjusted by loosening the nut 9 to facilitate the use of the chuck 6. After the adjustment is completed, the chuck 6 is positioned by tightening the nut 9 to avoid shaking of the chuck 6 during use.

[0028] The detection module 14, electric telescopic cylinder 15, etc. used in the present invention are all commonly used electronic components in the prior art, and their working methods and circuit structures are all well-known technologies. The operation of the detection module 14, electric telescopic cylinder 15 and other electronic components is controlled by an external switch group or PLC controller, and the working method of the detection module 14, electric telescopic cylinder 15 and other electronic components is controlled by the switch group or PLC controller. It is a commonly used technical means for technicians to control the working method of the detection module 14, electric telescopic cylinder 15 and other electronic components by means of the switch group or PLC controller, and will not be elaborated here.

[0029] The undisclosed parts of the present invention are all prior art, and their specific structures, materials and working principles will not be described in detail. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A MIG welding undercut prevention heat insulation chuck structure, comprising a mounting frame (1), characterized in that: A movable frame (2) is slidably provided on the outer side of the mounting frame (1), and a lifting assembly for driving the movable frame (2) to move up and down is installed on the side of the mounting frame (1), a fixed frame (3) is fixed on the side of the movable frame (2), and an adjustable adjustment frame (4) is provided on the outer side of the fixed frame (3), and a positioning assembly for positioning the adjustment frame (4) is provided on the side of the adjustment frame (4), a mounting plate (5) is fixed on the side of the adjustment frame (4), and a chuck (6) with an adjustable angle is rotatably installed on the side of the mounting plate (5), and a bakelite (7) is installed on the upper side of the chuck (6).

2. The MIG welding undercut prevention heat insulation chuck structure according to claim 1, characterized in that: A connecting plate (13) is fixed to the side of the movable frame (2), and the lifting assembly includes an electric telescopic cylinder (15) installed on the side of the mounting frame (1), and the telescopic end of the electric telescopic cylinder (15) is connected to the lower side of the connecting plate (13).

3. The MIG welding undercut prevention heat insulation chuck structure according to claim 2, characterized in that: A detection module (14) is installed on the side of the connecting plate (13), and the detection end of the detection module (14) is located at the connection between the connecting plate (13) and the telescopic end of the electric telescopic cylinder (15).

4. The MIG welding undercut prevention heat insulation chuck structure according to claim 1, characterized in that: The positioning assembly includes a threaded barrel (10) fixed on the upper side of the adjustment frame (4), and a through hole is opened on the side of the adjustment frame (4) near the threaded barrel (10). A fastening screw (11) is installed on the internal thread of the threaded barrel (10), and the lower end of the fastening screw (11) contacts the side of the fixing frame (3) through the through hole.

5. The MIG welding undercut prevention heat insulation chuck structure according to claim 4, characterized in that: A plurality of positioning grooves are provided on the upper side of the fixing frame (3), and protective pads (16) are fixed in the positioning grooves. The positioning grooves are adapted to the fastening screws (11).

6. The MIG welding undercut prevention heat insulation chuck structure according to claim 1, characterized in that: A limiting slot is provided on the side of the adjustment frame (4), a limiting strip (12) is fixed to the lower portion of the side of the fixing frame (3), the limiting strip (12) is slidably arranged in the limiting slot, and the limiting slot is adapted to the limiting strip (12).

7. The MIG welding undercut prevention heat insulation chuck structure according to claim 1, characterized in that: A mounting hole is provided at the connection between the chuck (6) and the mounting plate (5), and a bolt (8) is provided in the mounting hole. The side of the bolt (8) is threadedly connected to a nut (9) located on the lower side of the mounting plate (5).

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