Automatic welding device suitable for door frame machining

Abstract

The invention relates to the technical field of door frame welding, in particular to an automatic welding device suitable for door frame machining. The robot is fixedly mounted on the machine table; the welding head is mounted on the robot; the fixing mechanism is used for fixing the door frame; the fixing mechanism comprises a supporting table; the limiting plate and the first air cylinder are fixedly installed on the supporting table; the clamping plate is hinged to the movable end of the first air cylinder; and the supporting assembly is used for internally supporting the door frame. According to the door frame welding device, through the arrangement of the supporting table, the limiting plate and the supporting assembly, on one hand, the vertical inner walls of the frames are extruded, so that the adjacent frames can be extruded and fixed, the butt joint faces of the adjacent frames are in precise butt joint, and the welding precision of the whole door frame is guaranteed; and on the other hand, the welding positions of the two different frames are supported at the same time, so that the welding positions of the adjacent frames are located on the same plane, and the welding quality of the door frame is improved.

Description

Technical Field

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[0001] The present invention relates to the technical field of door frame welding, and particularly relates to an automatic welding device suitable for door frame processing. Background Art

[0002] The anti-theft door frame is composed of a top frame, a bottom frame and two side frames combined and welded. For the convenience of fixed installation with the wall, the cross-sections of the top frame, the bottom frame and the side frames are in the shape of "匚". Since each frame is formed by stamping and bending of metal plates, during the assembly welding, the toughness of the metal material itself causes the frames to rebound after bending, and then the welding positions between the frames cannot have good contact, thus affecting the welding quality of the anti-theft door frame.

[0003] A Chinese patent with the application number CN202222628488.5 discloses a door frame welding machine, including a base; a workbench, the workbench is installed on the base, and several slide rails are arranged on the top of the workbench, and the slide rails form a rectangle; a clamping mechanism, there are several clamping mechanisms, and the clamping mechanisms are all slidably installed on the slide rails; a first moving device, there are two first moving devices, and the first moving devices are respectively symmetrically installed on the base; a welding device, the welding device includes a support frame, and the support frame is installed on the first moving device; a second moving device, the second moving device is installed on the support frame; a telescopic device, the telescopic device is installed on the second moving device; a welding machine, the welding machine is installed at the telescopic end of the telescopic device; the beneficial effect of the present invention is that it can weld the four sides of the door frame without moving the position of the door frame, which facilitates the adjustment of the position and angle of the door frame components.

[0004] When the door frame welding machine in the above patent welds the anti-theft door frame, since the cross-section of each frame of the anti-theft door frame is in the shape of "匚" after bending, and the material rebounds differently due to the toughness of the metal plate itself during the splicing of the welding positions, when the clamping structure in this welding machine clamps and welds the door frame, the welding positions of the door frame are not in the same plane, thus affecting the welding quality.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above defects. Summary of the Invention

[0006] The purpose of the present invention is to provide an automatic welding device suitable for door frame processing that can effectively solve the above technical problems.

[0007] To achieve the purpose of the present invention, the following technical solutions are adopted:

[0008] An automatic welding device suitable for door frame processing, including: a machine table; a robot fixedly installed on the machine table; a welding head installed on the robot; a fixing mechanism for fixing the door frame;

[0009] The fixing mechanism includes: a support platform; a limit plate and a cylinder 1 fixedly mounted on the support platform; a clamping plate hingedly mounted on the movable end of the cylinder 1; a support assembly for internally supporting the door frame; the clamping plate and the support platform are hingedly arranged;

[0010] The support assembly includes: a second cylinder fixedly mounted on the support platform; an extrusion block fixedly mounted on the movable end of the second cylinder; a mounting cavity provided on the extrusion block; a third cylinder fixedly mounted in the mounting cavity; a linkage block fixedly mounted on the movable end of the third cylinder; a support rod installed through the extrusion block; a support plate fixedly mounted on one end of the support rod; a movable block fixedly mounted on the other end of the support rod; and a reset spring for driving the movable block to reset.

[0011] Furthermore, the sides of the linkage block and the movable block that are close to each other are both inclined.

[0012] Furthermore, the fixing mechanism further comprises: an adjusting component for adjusting the position of the supporting component;

[0013] The adjustment assembly includes: a mounting bracket rotatably mounted on the machine platform; a bidirectional screw rod rotatably mounted on the mounting bracket; a motor 1 that drives the bidirectional screw rod 1 to rotate; a sliding bracket threadedly connected to the bidirectional screw rod 1; a fixing bracket fixedly mounted on the mounting bracket; a bidirectional screw rod 2 rotatably mounted on the fixing bracket; a motor 2 that drives the bidirectional screw rod 2 to rotate; and a movable bracket threadedly connected to the bidirectional screw rod 2.

[0014] Furthermore, the sliding frame is slidably mounted on the mounting frame; the movable frame is slidably mounted on the sliding frame; and the support platform is slidably connected to the sliding frame and the movable frame.

[0015] Furthermore, the fixing mechanism further comprises: a rotating assembly driving the mounting frame to rotate;

[0016] The rotating assembly includes: a driven synchronous wheel coaxially connected to the mounting frame; an active synchronous wheel rotatably mounted in the machine; a synchronous belt installed on the active synchronous wheel and the driven synchronous wheel; and a motor three driving the active synchronous wheel.

[0017] Furthermore, it also includes: a processing mechanism for processing welding smoke during welding;

[0018] The processing mechanism includes: an annular tube fixedly mounted on the welding head; an air intake head connected to the annular tube; a purification box and an air pump fixedly installed on the machine; an air intake pipe connecting the purification box and the annular tube; and an air guide pipe connecting the air pump and the purification box.

[0019] Furthermore, the processing mechanism further includes: a positioning component for positioning the rotating mounting frame;

[0020] The positioning assembly includes: a turntable coaxially connected to the mounting frame; a positioning slot provided on the turntable; an air collecting pipe fixedly mounted on the machine platform; a movable rod installed through the air collecting pipe; a positioning block fixedly mounted on one end of the movable rod; a piston fixedly mounted on the other end of the movable rod; a linkage spring for driving the piston to return to its original position; and a circular hole provided on the air collecting pipe.

[0021] Furthermore, four positioning grooves are provided, and the four positioning grooves are evenly distributed in a ring shape along the circumference of the turntable, and the positioning blocks match the positioning grooves.

[0022] Furthermore, the processing mechanism further comprises: a maintenance component for maintaining the welded door frame;

[0023] The maintenance component includes: a liquid storage tank fixedly installed on the machine platform; a liquid guide pipe connected to the liquid storage tank; a nozzle connected to the liquid guide pipe; and an air outlet pipe connected to the air collecting pipe and the liquid storage tank.

[0024] Furthermore, it also includes: a cylinder four fixedly mounted on the sliding frame; and a top plate fixedly mounted on the movable end of the cylinder four.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention provides an automated welding device suitable for door frame processing. Through the arrangement of a support platform, a limit plate, and a support assembly, on the one hand, it realizes the extrusion of the vertical inner wall of the frame, so that the adjacent frames can be extruded and fixed, so that the docking surfaces of the adjacent frames are accurately docked, thereby ensuring the accuracy of the welding of the entire door frame. On the other hand, it realizes the simultaneous support of the welding points of two different frames, so that the welding positions of the adjacent frames are in the same plane, thereby improving the welding quality of the door frame.

[0027] 2. The present invention is an automated welding device suitable for door frame processing. Through the setting of the cylinder and the clamping plate, the top of the frame is squeezed and fixed, so that the top side wall of the frame is tightly fitted with the support plate, further ensuring that the welding position of the door frame is in the same plane, and further improving the welding quality of the door frame.

[0028] 3. The present invention provides an automated welding device suitable for door frame processing. Through the setting of a processing mechanism, during the welding process, on the one hand, the welding smoke can be purified to avoid direct emission of welding smoke to pollute the air. On the other hand, the mounting frame can be fixed to improve the stability of the door frame during welding, thereby preventing the mounting frame from rotating due to external force or vibration during welding, causing the welding position of the door frame to shift and affecting the welding quality. On the other hand, the curing liquid can be transported to the nozzle through the liquid guide tube and sprayed on the joint where the welding is completed through the nozzle, effectively preventing the metal from contacting with moisture and oxygen in the external environment, improving the welding quality, thereby reducing the possibility of metal rusting due to oxidation, and being able to maintain the gloss and integrity of the weld for a long time, thereby extending the service life of the metal structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0030] Figure 1 This is a three-dimensional schematic diagram of an automated welding device suitable for door frame processing according to the present invention;

[0031] Figure 2 This is a three-dimensional schematic diagram from another angle of an automated welding device suitable for door frame processing according to the present invention;

[0032] Figure 3 The present invention is an automatic welding device suitable for door frame processing Figure 2 Enlarged view of point A in the middle;

[0033] Figure 4 This is a schematic structural diagram of a maintenance component of an automated welding device suitable for door frame processing according to the present invention;

[0034] Figure 5 This is a schematic structural diagram of a rotating assembly of an automated welding device suitable for door frame processing according to the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of an adjustment component of an automated welding device suitable for door frame processing according to the present invention;

[0036] Figure 7 This is a three-dimensional schematic diagram of a turntable of an automated welding device suitable for door frame processing according to the present invention;

[0037] Figure 8 The present invention is an automatic welding device suitable for door frame processing Figure 7 Enlarged view of point B in the middle;

[0038] Figure 9This is a three-dimensional schematic diagram of a support platform of an automated welding device suitable for door frame processing according to the present invention;

[0039] Figure 10 This is a schematic cross-sectional view of an extrusion block of an automated welding device suitable for door frame processing according to the present invention;

[0040] Figure 11 The figure is a schematic top plan view of a frame of an automated welding device suitable for door frame processing according to the present invention.

[0041] In the picture:

[0042] 1. Machine; 2. Robot; 3. Welding head; 4. Fixing mechanism; 41. Support platform; 42. Limit plate; 43. Cylinder 1; 44. Clamping plate; 45. Support assembly; 451. Cylinder 2; 452. Extrusion block; 453. Cylinder 3; 454. Linking block; 455. Movable block; 456. Support rod; 457. Support plate; 458. Return spring; 46. Adjustment assembly; 461. Mounting bracket; 462. Motor 1; 463. Bidirectional screw 1; 464. Sliding bracket; 465. Fixed bracket; 466. Motor 2; 467. Bidirectional screw 2; 468. Movable bracket; 47. Rotating assembly; 471 , active synchronous wheel; 472, driven synchronous wheel; 473, synchronous belt; 474, motor three; 5, processing mechanism; 51, annular tube; 52, air intake head; 53, air intake pipe; 54, purification box; 55, air guide pipe; 56, air pump; 57, positioning assembly; 571, turntable; 572, positioning groove; 573, air collecting pipe; 574, movable rod; 575, positioning block; 576, piston; 577, linkage spring; 578, round hole; 58, maintenance assembly; 581, liquid storage tank; 582, liquid guide pipe; 583, nozzle; 584, air outlet pipe; 6, cylinder four; 7, top plate; 8, frame; 9, docking surface. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "transverse", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0045] As Figures 1 to 11 shown, an automated welding device applicable to door frame processing according to the present invention includes: a machine table 1; a robot 2 fixedly installed on the machine table 1; a welding head 3 installed on the robot 2; and a fixing mechanism 4 for fixing the door frame.

[0046] The door frame in the present invention is composed of four side frames 8. The cross-sections of the four side frames 8 are all "U" shapes. The end surfaces of each side frame 8 are butt surfaces 9, and the butt surfaces 9 are all inclined at 45 degrees. The door frame is fixed by the fixing mechanism 4, and then the robot 2 is started to drive the welding head 3 to weld the door frame.

[0047] The fixing mechanism 4 includes: a support table 41, and there are four support tables 41; a limit plate 42 and a cylinder Ⅰ 43 fixedly installed on the support table 41; a clamping plate 44 hinged to the movable end of the cylinder Ⅰ 43; a support component 45 for internally supporting the door frame, and there are four groups of support components 45, which are respectively located at the four corners of the door frame welding; the clamping plate 44 is hinged to the support table 41; and an adjusting component 46 for adjusting the position of the support component 45.

[0048] The adjustment component 46 includes: a mounting frame 461 rotatably mounted on the machine 1; a bidirectional screw 463 rotatably mounted on the mounting frame 461; a motor 462 that drives the bidirectional screw 463 to rotate; a sliding frame 464 threadedly connected to the bidirectional screw 463, and two sliding frames 464 are provided; a fixed frame 465 fixedly mounted on the mounting frame 461; a bidirectional screw 467 rotatably mounted on the fixed frame 465; a motor 466 that drives the bidirectional screw 467 to rotate; a movable frame 468 threadedly connected to the bidirectional screw 467, and two movable frames 468 are provided; the sliding frame 464 is slidably mounted on the mounting frame 461; the movable frame 468 is slidably mounted on the sliding frame 464; and the support platform 41 is slidably connected to the sliding frame 464 and the movable frame 468.

[0049] The starting motor 1 462 drives the bidirectional screw 1 463 to rotate, thereby driving the two sliding racks 464 to move closer to each other. The two sliding racks 464 drive the adjacent support platforms 41 to move closer to each other along the axial direction of the bidirectional screw 1 463.

[0050] The second starting motor 466 drives the second bidirectional screw 467 to rotate, thereby driving the two movable frames 468 to move closer to each other. The two movable frames 468 drive the adjacent support platforms 41 to move closer to each other along the axis of the second bidirectional screw 467.

[0051] In the present invention, by setting the adjustment component 46, the distance between the four support platforms 41 can be adjusted according to the length and width of the door frame, so as to facilitate the fixation of door frames of different specifications.

[0052] It should be added here that motor 1 462 and motor 2 466 are preferably dual-axis motors.

[0053] When the adjustment of the support platform 41 is completed, the frame 8 of the door frame is placed on the top of the support platform 41, and the outer wall of the frame 8 is abutted against the adjacent limiting plate 42, and the docking surfaces 9 of the adjacent frames 8 are docked. At this time, the support assembly 45 is started to support the docking point (i.e., the welding point) of the frame 8.

[0054] The support component 45 includes: a second cylinder 451 fixedly installed on the support platform 41; an extrusion block 452 fixedly installed at the movable end of the second cylinder 451; an installation cavity opened on the extrusion block 452; a third cylinder 453 fixedly installed in the installation cavity; a linkage block 454 fixedly installed at the movable end of the third cylinder 453; a support rod 456 penetrating and installed on the extrusion block 452; a support plate 457 fixedly installed at one end of the support rod 456, with at least two support rods 456 fixedly connected to each support plate 457; a movable block 455 fixedly installed at the other end of the support rod 456; a return spring 458 for driving the movable block 455 to reset, with one end of the return spring 458 fixedly connected to the movable block 455 and the other end of the return spring 458 fixedly connected to the inner wall of the installation cavity; both the side of the linkage block 454 and the side of the movable block 455 close to each other are inclined.

[0055] After the frame 8 is placed, start the second cylinder 451 to drive the adjacent extrusion blocks 452 to move. The extrusion blocks 452 move into the inner cavity of the frame 8 with a "C" - shaped cross - section. Through the extrusion side of the extrusion block 452, the vertical inner wall of the frame 8 can be extruded, and in cooperation with the limit plate 42, the adjacent frames 8 can be extruded and fixed.

[0056] Since the extrusion side of the extrusion block 452 is inclined, and there are two extrusion sides with an included angle of 9 degrees between them, the adjacent frames 8 are perpendicular to each other, and the docking surfaces 9 of the adjacent frames 8 are closely docked, ensuring the accuracy of the welding of the entire door frame.

[0057] After the frame 8 is fixed by the cooperation of the extrusion block 452 and the limit plate 42, start the third cylinder 453 to drive the linkage block 454 to move. The linkage block 454 moves the adjacent movable blocks 455. The movable blocks 455 drive the adjacent support rods 456 to move. The support rods 456 drive the adjacent support plates 457 to move and compress the return spring 458. The adjacent support plates 457 move away from each other, so as to support the horizontal inner wall of the frame 8. And one support plate 457 can support the docking part of two different frames 8 at the same time, making the welding positions of the adjacent frames 8 in the same plane and improving the welding quality of the door frame.

[0058] After the frame 8 is extruded, fixed and supported, start the first cylinder 43 to drive the clamping plate 44 to move, so that the clamping plate 44 rotates around its hinge point with the support platform 41. Thus, the clamping side of the clamping plate 44 extrudes and fixes the top of the frame 8, making the top side wall of the frame 8 closely fit with the support plate 457, further ensuring that the welding positions of the door frame are in the same plane and further improving the welding quality of the door frame.

[0059] In the present invention, through the arrangement of the support platform 41, the limit plate 42, the support assembly 45, the cylinder 1 43, and the clamping plate 44, on the one hand, the vertical inner wall of the frame 8 is squeezed, so that the adjacent frames 8 can be squeezed and fixed, and since the angle between the two extrusion sides of the extrusion block 452 is 90 degrees, the adjacent frames 8 are perpendicular to each other, and the docking surfaces 9 of the adjacent frames 8 are tightly docked, ensuring the accuracy of the welding of the entire door frame. On the other hand, it is achieved that the welding points of two different frames 8 are supported at the same time, so that the welding positions of adjacent frames 8 are in the same plane, thereby improving the welding quality of the door frame. On the other hand, it is achieved that the top of the frame 8 is squeezed and fixed, so that the top side wall of the frame 8 is tightly fitted with the support plate 457, further ensuring that the welding positions of the door frame are in the same plane, thereby further improving the welding quality of the door frame.

[0060] The fixing mechanism 4 also includes: a rotating assembly 47 that drives the mounting frame 461 to rotate; the rotating assembly 47 includes: a driven synchronous pulley 472 coaxially connected to the mounting frame 461; an active synchronous pulley 471 rotatably installed in the machine 1; a synchronous belt 473 installed on the active synchronous pulley 471 and the driven synchronous pulley 472; and a motor 474 that drives the active synchronous pulley 471, and the motor 474 is fixedly installed in the machine 1.

[0061] When all four side frames 8 of the door frame are fixed, start motor three 474 to drive the active synchronous wheel 471 to rotate, and the active synchronous wheel 471 drives the driven synchronous wheel 472 to rotate through the synchronous belt 473, and the driven synchronous wheel 472 drives the mounting bracket 461 to rotate, thereby driving the door frame to rotate, and making the door frame rotate 90 degrees each time, so that the welding point of the door frame moves to the bottom of the welding head 3 in turn, making it easier for the robot 2 to drive the welding head 3 to weld the door frame.

[0062] It also includes: a processing mechanism 5 for processing welding smoke during welding; the processing mechanism 5 includes: an annular tube 51 fixedly mounted on the welding head 3; an air intake head 52 connected to the annular tube 51; a purification box 54 and an air pump 56 fixedly mounted on the machine 1; an air intake pipe 53 connecting the purification box 54 and the annular tube 51; and an air guide pipe 55 connecting the air pump 56 and the purification box 54.

[0063] Before starting the welding head 3 to weld the door frame, start the air pump 56 to inhale air, so as to achieve inhalation before welding, which improves the collection effect of welding smoke. The welding smoke generated during welding enters the purification box 54 through the air intake head 52, the annular tube 51, and the air intake pipe 53 in turn. After purification in the purification box 54, it is discharged through the air guide pipe 55, thereby achieving the purification treatment of the welding smoke and avoiding direct emission of welding smoke to pollute the air.

[0064] It is supplemented here that a filter is installed in the purification box 54 to filter the welding smoke.

[0065] The processing mechanism 5 also includes: a positioning component 57 for positioning the rotating mounting frame 461; the positioning component 57 includes: a turntable 571 coaxially connected to the mounting frame 461; a positioning groove 572 provided on the turntable 571; an air collecting pipe 573 fixedly installed on the machine 1, and the air collecting pipe 573 is connected to the air outlet end of the air pump 56 through a connecting pipe; a movable rod 574 installed through the air collecting pipe 573; a positioning block 575 fixedly installed at one end of the movable rod 574; a piston 576 fixedly installed at the other end of the movable rod 574; a linkage spring 577 for driving the piston 576 to return; a circular hole 578 provided on the air collecting pipe 573; four positioning grooves 572 are provided, and the four positioning grooves 572 are evenly distributed in a ring shape along the circumference of the turntable 571, and the positioning block 575 matches the positioning groove 572.

[0066] When the air pump 56 is started, the air pump 56 delivers the purified gas to the gas collecting pipe 573 through the connecting pipe. Since the aperture of the circular hole 578 is small, the amount of gas discharged from the circular hole 578 is less than the amount of air taken in. Therefore, most of the gas will be retained in the gas collecting pipe 573. As the amount of gas in the gas collecting pipe 573 increases, the air pressure in the gas collecting pipe 573 also increases, thereby pushing the piston 576 to slide in the gas collecting pipe 573. The piston 576 drives the movable rod 574 to move and drives the linkage spring 577 to be compressed. The movable rod 574 drives the positioning block 575 to be inserted into the adjacent positioning groove 572, thereby fixing the turntable 571. Since the turntable 571 is coaxially connected to the mounting bracket 461, the mounting bracket 461 can be fixed, thereby improving the stability of the door frame during welding, thereby preventing the mounting bracket 461 from rotating due to external force or vibration during welding, causing the welding position of the door frame to shift, affecting the welding quality.

[0067] When welding is completed, the air pump 56 stops running and no longer supplies gas to the gas collecting pipe 573. The gas in the gas collecting pipe 573 is discharged through the circular hole 578. When the air pressure inside and outside the gas collecting pipe 573 is balanced, the piston 576 can be reset through the action of the linkage spring 577, thereby driving the positioning block 575 to separate from the positioning groove 572, releasing the fixation of the turntable 571. At this time, starting the rotating assembly 47 can drive the door frame to rotate 90 degrees, so that the next welding point of the door frame moves to the bottom of the welding head 3, and repeat the above operation until the door frame is completely welded.

[0068] The processing mechanism 5 also includes: a maintenance component 58 for maintaining the door frame after welding; the maintenance component 58 includes: a liquid storage tank 581 fixedly installed on the machine 1, and the liquid storage tank 581 stores a curing liquid; a liquid guide pipe 582 connected to the liquid storage tank 581; a nozzle 583 connected to the liquid guide pipe 582; an air outlet pipe 584 connecting the gas collecting pipe 573 and the liquid storage tank 581, and an electromagnetic valve is installed on the air outlet pipe 584.

[0069] When one welding point of the door frame is completed, the rotating assembly 47 is started to drive the door frame to rotate 90 degrees, so that the next welding point of the door frame moves below the welding head 3, and the welded joint moves below the nozzle 583.

[0070] At this time, the air pump 56 is started again, and the air pump 56 delivers the purified gas to the gas collecting pipe 573. At this time, the solenoid valve is opened, and a part of the gas is delivered to the liquid storage tank 581 through the gas outlet pipe 584. On the one hand, the gas can be stirred to make the various components of the curing liquid uniform. On the other hand, it can increase the pressure in the liquid storage tank 581. When the pressure in the liquid storage tank 581 reaches a certain value, the curing liquid can be delivered to the nozzle 583 through the liquid guide tube 582 and sprayed on the welded joint through the nozzle 583, effectively preventing the metal from contacting with moisture and oxygen in the external environment, improving the welding quality, thereby reducing the possibility of metal rusting due to oxidation, and maintaining the gloss and integrity of the weld for a long time, thereby extending the service life of the metal structure.

[0071] It should be added here that the sum of the amount of gas discharged through the outlet pipe 584 and the amount of gas discharged through the circular hole 578 is less than the amount of gas intake into the collecting pipe 573 , and therefore does not affect the increase in the gas pressure in the collecting pipe 573 .

[0072] In the present invention, through the setting of the processing mechanism 5, during the welding process, on the one hand, the welding smoke can be purified and the direct emission of welding smoke can be avoided to pollute the air; on the other hand, the mounting bracket 461 can be fixed, thereby improving the stability of the door frame during welding, thereby preventing the mounting bracket 461 from rotating due to external force or vibration during welding, causing the welding position of the door frame to shift and affecting the welding quality; on the other hand, the curing liquid can be transported to the nozzle 583 through the liquid guide tube 582 and sprayed on the joint where the welding is completed through the nozzle 583, effectively preventing the metal from contacting with moisture and oxygen in the external environment, thereby improving the welding quality, and thus reducing the possibility of metal rusting due to oxidation, and can maintain the gloss and integrity of the weld for a long time, thereby extending the service life of the metal structure.

[0073] It also includes: a cylinder four 6 fixedly mounted on the sliding frame 464; and a top plate 7 fixedly mounted on the movable end of the cylinder four 6.

[0074] When welding the frame 8, start the cylinder 46 to drive the top plate 7 to move upward, so that the cylinder 46 stops running after the top plate 7 abuts against the frame 8, thereby supporting the frame 8 and further improving the stability of the frame 8 during welding.

[0075] When the door frame is completely welded, the fixing mechanism 4 is released to fix the door frame. At this time, the cylinder 4 6 is started again to drive the top plate 7 to continue to move upward, so that the entire door frame can be lifted up, thereby facilitating the unloading of the welded door frame.

[0076] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0077] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An automated welding device suitable for door frame processing, characterized in that: include: Machine; A robot fixedly mounted on the machine platform; a welding head mounted on the robot; A fixing mechanism for fixing the door frame; The fixing mechanism includes: a support platform; a limit plate and a cylinder 1 fixedly mounted on the support platform; a clamping plate hingedly mounted on the movable end of the cylinder 1; a support assembly for internally supporting the door frame; the clamping plate and the support platform are hingedly arranged; The support assembly includes: a second cylinder fixedly mounted on the support platform; an extrusion block fixedly mounted on the movable end of the second cylinder; a mounting cavity provided on the extrusion block; a third cylinder fixedly mounted in the mounting cavity; a linkage block fixedly mounted on the movable end of the third cylinder; a support rod installed through the extrusion block; a support plate fixedly mounted on one end of the support rod; a movable block fixedly mounted on the other end of the support rod; and a reset spring for driving the movable block to reset.

2. The automatic welding device suitable for door frame processing according to claim 1, characterized in that: The sides of the linkage block and the movable block that are close to each other are both inclined.

3. The automatic welding device suitable for door frame processing according to claim 1, characterized in that: The fixing mechanism further includes: an adjusting component for adjusting the position of the supporting component; The adjustment assembly includes: a mounting bracket rotatably mounted on the machine platform; a bidirectional screw rod rotatably mounted on the mounting bracket; a motor 1 that drives the bidirectional screw rod 1 to rotate; a sliding bracket threadedly connected to the bidirectional screw rod 1; a fixing bracket fixedly mounted on the mounting bracket; a bidirectional screw rod 2 rotatably mounted on the fixing bracket; a motor 2 that drives the bidirectional screw rod 2 to rotate; and a movable bracket threadedly connected to the bidirectional screw rod 2.

4. The automatic welding device suitable for door frame processing according to claim 3, characterized in that: The sliding frame is slidably mounted on the mounting frame; the movable frame is slidably mounted on the sliding frame; and the supporting platform is slidably connected to the sliding frame and the movable frame.

5. The automatic welding device suitable for door frame processing according to claim 4, characterized in that: The fixing mechanism further includes: a rotating assembly that drives the mounting frame to rotate; The rotating assembly includes: a driven synchronous wheel coaxially connected to the mounting frame; an active synchronous wheel rotatably mounted in the machine; a synchronous belt installed on the active synchronous wheel and the driven synchronous wheel; and a motor three driving the active synchronous wheel.

6. The automated welding device suitable for door frame processing according to claim 1, characterized in that: Also includes: A processing mechanism for processing welding fumes during welding; The processing mechanism includes: an annular tube fixedly mounted on the welding head; an air intake head connected to the annular tube; a purification box and an air pump fixedly installed on the machine; an air intake pipe connecting the purification box and the annular tube; and an air guide pipe connecting the air pump and the purification box.

7. The automated welding device for door frame processing according to claim 6, characterized in that: The processing mechanism further includes: a positioning assembly for positioning the rotating mounting frame; The positioning assembly includes: a turntable coaxially connected to the mounting frame; a positioning slot provided on the turntable; an air collecting pipe fixedly mounted on the machine platform; a movable rod installed through the air collecting pipe; a positioning block fixedly mounted on one end of the movable rod; a piston fixedly mounted on the other end of the movable rod; a linkage spring for driving the piston to return to its original position; and a circular hole provided on the air collecting pipe.

8. The automated welding device for door frame processing according to claim 7, characterized in that: There are four positioning grooves, and the four positioning grooves are evenly distributed in a ring shape along the circumference of the turntable, and the positioning blocks match the positioning grooves.

9. The automated welding device for door frame processing according to claim 8, characterized in that: The processing mechanism further includes: a maintenance component for maintaining the welded door frame; The maintenance component includes: a liquid storage tank fixedly installed on the machine platform; a liquid guide pipe connected to the liquid storage tank; a nozzle connected to the liquid guide pipe; and an air outlet pipe connected to the air collecting pipe and the liquid storage tank.

10. The automated welding device suitable for door frame processing according to claim 3, characterized in that: Also includes: A cylinder four is fixedly mounted on the sliding frame; and a top plate is fixedly mounted on the movable end of the cylinder four.

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