Welding equipment and welding method for machining

Abstract

The invention relates to the technical field of precise instrument workpiece welding, in particular to welding equipment for machining and a welding method.The welding equipment comprises an operation box which is in a concave shape, baffles are installed on the front side and the rear side of the operation box in a sliding mode, and smoke suction machines symmetrically installed in an inner cavity of the operation box are arranged between the two baffles correspondingly; according to the welding device, workpieces needed by precise instruments, splashed sparks generated during welding in the operation box and smoke dust can be resisted through the arrangement of the baffles, smoke generated during welding in the operation box can be adsorbed through the arrangement of the smoke suction machine, and the smoke suction machine can be used for sucking smoke generated during welding in the operation box; according to the U-shaped workpiece welding device, pollution caused during welding is effectively restrained, the two U-shaped workpieces can be extruded after being matched when the two U-shaped workpieces are welded through the arrangement of the stabilizing unit, and the situation that when the U-shaped workpieces are welded, the two U-shaped workpieces are loosened due to the fact that a weld joint is subjected to external force is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of precision instrument workpiece welding, in particular to a welding device and a welding method for mechanical processing. Background Art

[0002] Precision instruments refer to equipment and devices used to produce and measure precision quantities. There are many types of workpieces used, and most of the workpieces need to be welded.

[0003] Welding, also known as fusion or melting, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure.

[0004] The prior art discloses a Chinese patent with application number CN202410235921.X, which is a large-scale welding equipment. It discloses that the two ends of large arc-shaped parts of different sizes are clamped and fixed by right-angle blocks, and the large arc-shaped parts of different sizes and curvatures are supported and fixed by supporting blocks and right-angle blocks. Small arc-shaped parts of different sizes and curvatures are clamped and limited by movable columns so that they are tightly attached to the large arc-shaped parts. Small arc-shaped parts of different sizes and curvatures are fixed by suction racks, thereby improving the use efficiency of the equipment.

[0005] Although the above device can achieve the fixation of both sides of arc-shaped parts of different sizes before welding, it still has some defects in use:

[0006] 1. When welding two workpieces, there will be a gap between the two workpieces after they are fitted together. If only two sides of the workpieces are fixed, the gap in the workpieces will cause the workpieces to loosen during welding, resulting in poor welding quality.

[0007] 2. To ensure the welding quality of the workpiece, the welding surface must be kept clean. When welding a U-shaped workpiece, it is impossible to clean the welding surface in advance according to the welding trajectory outside the workpiece. Summary of the Invention

[0008] The object of the present invention is to provide a welding device and a welding method for mechanical processing, so as to solve the problem raised in the above background technology of keeping two workpieces in contact with each other and pre-cleaning the welding surfaces when welding them.

[0009] The purpose of the present invention can be achieved through the following technical solutions:

[0010] A welding device for mechanical processing includes an operating box, which is arranged in a concave shape. Baffles are slidably installed on the front and rear sides of the operating box. Smoking machines symmetrically installed in the inner cavity of the operating box are respectively provided between the two baffles. A mounting frame fixed to the operating box is provided below the smoking machine. A placement unit is detachably installed between the two mounting frames. A stabilizing unit is provided in the middle of the placement unit for fastening multiple workpieces to each other when welding. Moving grooves are provided on both sides of the upper end surface of the operating box. T-blocks are slidably installed in the moving grooves through electric sliders. A cylinder is fixedly installed on the upper end surface of the T-block. A U-shaped frame is installed between the two cylinders. A U-shaped groove is provided on the inner wall of the U-shaped frame. A welding unit is slidably installed in the U-shaped groove through an electric slider.

[0011] The placement unit includes a work frame, which has symmetrical adjustment slots. Two adjustment slots are provided on the side away from each other and a through slot is provided on the work frame. The two sides of the adjustment slots are connected and a side slot is provided on the work frame. Built-in rods are slidably installed in the side slots, and a support plate is fixedly installed between the two corresponding built-in rods.

[0012] There are grooves on both sides of the upper end surface of the supporting plate, and clamping plates are installed in the grooves through electric sliders. Cams are installed in the front and back of the middle part of the work frame through motor rotation. Push plates are hinged on both sides of the cam, and the side of the push plate away from the cam is hinged to the built-in rods on both sides.

[0013] The stabilization unit includes two support frames installed on the work frame and symmetrically arranged, a support rod is installed between the two support frames, and two symmetrically arranged discs are slidably installed on the support rod through an electric slider. A plurality of external sleeves are provided on the outside of the disc, and an internal plate is slidably installed in the external sleeve. A rubber block is fixedly installed on the top of the internal plate, an outer edge rod is fixedly installed on one side of the internal plate, and a fastening plate is slidably installed on the outer edge rod. A spring is provided on the side away from the two fastening plates and is sleeved on the outer edge rod.

[0014] A rectangular groove is provided on the outer sleeve, in which a convex shaft fixedly connected to the inner plate is slidably installed. An annular ring is installed on one side of the disc for sliding and rotating through an electric slider, and a control plate is hinged between the annular ring and multiple convex shafts.

[0015] The welding unit includes a top block, which is slidably connected to the U-shaped frame by an electric slider. A hollow frame is installed on the lower end surface of the top block through motor rotation. A central axis is rotatably installed in the middle of the hollow frame. A fixed frame is fixed on the central axis. Lifting slots are opened on both sides of the fixed frame. Lifting shafts are slidably installed in the lifting slots. A placement box is fixedly installed between the two lifting shafts, and a welding gun is detachably installed in the placement box.

[0016] Two symmetrically arranged ear plates are fixedly installed on one side of the fixed frame, and a shaft is installed between the two ear plates through an electric slider. Both ends of the shaft are fixedly installed with lifting frames that are respectively mounted on the lifting shafts on both sides.

[0017] A rotating wheel is fixedly installed at both ends of the central shaft, and a driving tooth is provided on one side of the rotating wheel for sliding connection with the hollow frame. An electric push rod is fixedly installed on one side of the middle of the hollow frame, and a T-shaped plate is fixedly installed on the telescopic end of the electric push rod, which is respectively fixed to the driving teeth on both sides.

[0018] Side shafts are fixedly installed on both sides of the placement box, and a sleeve plate is installed between the two side shafts. Slide rods are slidably installed on both sides of the sleeve plate. Springs are sleeved on the outside of the two slide rods. An arc plate is installed between the two slide rods. The middle part of the arc plate is through-set. Two groups of corresponding flip plates are installed on both sides of the arc plate through electric sliding. Cleaning rollers are installed to rotate together between each group of flip plates.

[0019] Another object of the present invention is to provide a welding method for machining welding equipment comprising the following steps:

[0020] S1: Workpiece fixation:

[0021] The two U-shaped workpieces of the precision instrument to be welded are placed in the middle of the two supporting plates in sequence so that they fit together. Then, the electric slider is opened to drive the two clamping plates to move closer to each other to initially clamp the two U-shaped workpieces to be welded on the supporting plates. Then, the stabilizing unit is used to restrain the two workpieces on the side away from each other to prevent the workpieces from shifting when welding at the gap between the two workpieces.

[0022] S2: Workpiece welding:

[0023] The cylinder is turned on for retraction, causing the U-shaped frame to move downward as a whole until the arc plate moves downward and contacts the workpiece and then moves upward. At this time, the welding gun can be turned on to weld the connection between the two workpieces. In addition, with the setting of the arc plate, the parts of the workpiece that do not need to be welded can be blocked. At the same time, the top block slides in the U-shaped frame, so that arc welding can be performed on the workpiece according to its specific shape.

[0024] Beneficial effects of the present invention:

[0025] 1. The setting of the baffle of the present invention can resist the flying sparks and smoke generated when the workpieces required by the precision instrument are welded in the operation box. The setting of the fume extractor can absorb the smoke generated during welding in the operation box, effectively suppressing the pollution caused by welding. The setting of the placement unit can meet the placement requirements of U-shaped workpieces of different specifications when welding. The setting of the stabilization unit can squeeze the two U-shaped workpieces after they are matched when welding, so as to avoid the two U-shaped workpieces being loosened due to the external force at the weld seam during welding.

[0026] 2. The present invention drives the annular ring to rotate by opening the electric slider. When the annular ring rotates, the control plate drives the inner plate to extend and retract on the outer sleeve until the rubber block at the end of the inner plate abuts the inner wall of the U-shaped workpiece, thereby completing the internal support of the U-shaped workpieces of different specifications. When the two discs approach each other, the corresponding fastening plates on the two discs abut the sides of the two U-shaped workpieces that are away from each other, thereby effectively avoiding loosening between the two workpieces during welding, resulting in poor welding effect. In addition, the setting of the rubber block can also support the inner wall of the U-shaped workpiece, which can stabilize the welding of the workpiece and avoid deformation of the workpiece during welding.

[0027] 3. The present invention drives the top block to move inside the U-shaped frame by opening the electric slider, so that the joints of the two U-shaped workpieces below can be welded. Compared with the existing device, the present invention can meet the needs of welding the joints between the two U-shaped workpieces to connect and fix them, and the electric push rod is opened and retracted to make the T-plate rise and fall. When the T-plate is raised and lowered, the fixed frame is driven to rotate along the axis of the central axis by the rotating wheel, so that the angle of the welding gun in the middle of the fixed frame can be adjusted. By adjusting the angle of the welding gun, the present invention can weld the joints of the two U-shaped workpieces. When the placement box is moved, it can also be used for horizontal welding of conventional workpieces perpendicular to the ground, thereby increasing the flexibility of welding.

[0028] 4. When the shaft of the present invention rotates, the placement box is lifted and lowered in the fixed frame through the lifting frame, thereby lifting and lowering the welding gun. On the one hand, the welding gun is assisted to perform horizontal welding perpendicular to the ground on conventional workpieces. On the other hand, the lifting of the welding gun can also control the welding distance while welding U-shaped workpieces. The welding position of the welding gun can be limited by the setting of the arc plate, and the workpiece does not need to be protected at the welding point. At the same time, when moving, the arc plate is always in contact with the arc-shaped outside of the workpiece, so as to cooperate with the cleaning roller to perform external cleaning operations on the welds of the workpiece that need to be welded, thereby improving the welding quality by ensuring the cleanliness of the welding surface at the welding point. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0030] Figure 1 It is a schematic diagram of the overall front structure of the present invention;

[0031] Figure 2 Schematic diagram of the internal structure of the operating box of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure between the U-shaped frame and the work frame of the present invention;

[0033] Figure 4 It is a schematic structural diagram of the welding unit of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure between the placement box and the curved plate of the present invention;

[0035] Figure 6 It is a schematic diagram of the structure between the top block and the fixing frame of the present invention;

[0036] Figure 7 This is a schematic diagram of the structure between the U-shaped workpiece and the work frame of the present invention;

[0037] Figure 8 It is a schematic diagram of the structure of the work frame of the present invention;

[0038] Figure 9 It is a schematic structural diagram of the support stabilization unit of the present invention.

[0039] The reference numerals in the figures are as follows:

[0040] 1. Operation box; 11. Baffle; 12. Mounting frame; 13. Moving slot; 131. T-block; 132. Cylinder; 133. U-shaped frame; 14. Smoking machine; 21. Working frame; 22. Adjusting slot; 23. Side slot; 231. Internal rod; 24. Support plate; 25. Clamping plate; 26. Cam; 261. Push plate; 31. Support frame; 32. Support rod; 33. External sleeve; 331. Rectangular slot; 332. Protruding shaft; 34. Internal plate; 341. External rod; 342. Fastening plate; 3 5. Rubber block; 36. Annular ring; 361. Control panel; 40. Top block; 41. Hollow frame; 42. Center shaft; 421. Rotating wheel; 422. Driving gear; 423. Electric push rod; 424. T-plate; 43. Fixed frame; 431. Lifting slot; 432. Lifting shaft; 433. Ear plate; 434. Shaft; 435. Lifting frame; 44. Placement box; 45. Welding gun; 46. Side shaft; 461. Sleeve plate; 47. Slide rod; 48. Arc plate; 481. Flip plate; 482. Cleaning roller. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 any creative efforts shall fall within the scope of protection of the present invention.

[0042] As attached Figure 1-9 As shown, a welding device for mechanical processing includes an operation box 1, which is concave-shaped. Baffles 11 are slidably installed on the front and rear sides of the operation box 1. A smoke extractor 14 symmetrically installed in the inner cavity of the operation box 1 is provided between the two baffles 11. A mounting frame 12 fixed to the operation box 1 is provided below the smoke extractor 14. A placement unit is detachably installed between the two mounting frames 12. A stabilizing unit for fastening multiple workpieces to each other when welding is performed is provided in the middle of the placement unit. Movable grooves 13 are provided on both sides of the upper end face of the operation box 1. T-blocks 131 are slidably installed in the movable grooves 13 through electric sliders. A cylinder 132 is fixedly installed on the upper end face of the T-block 131. A U-shaped frame 133 is commonly installed between the two cylinders 132. A U-shaped groove is provided on the inner wall of the U-shaped frame 133, and a welding unit is slidably installed in the U-shaped groove through an electric slider.

[0043] The setting of the baffle 11 can resist the flying sparks and smoke generated when the workpiece required for the precision instrument is welded in the operation box 1. The setting of the smoke extractor 14 can adsorb the smoke generated during welding in the operation box 1, effectively suppressing the pollution caused by welding. The setting of the placement unit can meet the placement requirements for U-shaped workpieces of different specifications when welding. The setting of the stabilization unit can squeeze the two U-shaped workpieces after they are matched when welding, so as to avoid the two U-shaped workpieces being loosened due to external forces at the weld seam during welding.

[0044] As attached Figure 8 As shown, the placement unit includes a work frame 21, and the work frame 21 is symmetrically provided with adjustment grooves 22. The two adjustment grooves 22 are provided with a through groove on the work frame 21 on the side away from each other. The two sides of the adjustment grooves 22 are connected with side grooves 23 on the work frame 21. A built-in rod 231 is slidably installed in the side groove 23, and a support plate 24 is fixedly installed between the two corresponding built-in rods 231.

[0045] When U-shaped workpieces of different sizes are placed before welding, the motor is turned on to drive the cam 26 to rotate. When the cam 26 rotates, the pushing plates 261 on both sides make the supporting plates 24 on both sides slide in the regulating grooves 22 on both sides. The distance between the two supporting plates 24 is adjusted according to the width of the U-shaped workpiece to be welded, so that the U-shaped workpiece can be placed above the two supporting plates 24. Then the electric slider is turned on to drive the front and rear clamping plates 25 to perform preliminary fixation on the two workpieces to be welded.

[0046] Grooves are provided on both sides of the upper end surface of the supporting plate 24, and a clamping plate 25 is slidably installed in the groove through an electric slider. Cams 26 are installed on the front and back of the middle part of the working frame 21 through motor rotation. Push plates 261 are hinged on both sides of the cam 26, and the side of the push plate 261 away from the cam 26 is hinged to the built-in rods 231 on both sides.

[0047] As attached Figure 9 As shown, the stabilization unit includes two support frames 31 installed on the working frame 21 and symmetrically arranged, a support rod 32 is installed between the two support frames 31, and two symmetrically arranged discs are slidably installed on the support rod 32 through an electric slider, and a plurality of external sleeves 33 are provided on the outside of the disc, and an internal plate 34 is slidably installed in the external sleeve 33, and a rubber block 35 is fixedly installed on the top of the internal plate 34, and an outer rod 341 is fixedly installed on one side of the internal plate 34, and a fastening plate 342 is slidably installed on the outer rod 341, and the two fastening plates 342 are provided with a spring sleeved on the outer rod 341 on the side away from each other.

[0048] When the U-shaped workpieces in the two precision instruments to be welded are preliminarily fixed, the electric slider is opened to drive the two discs to move closer to or away from each other on the support rod 32, until the rubber blocks 35 arranged on the two discs are respectively in the middle of the inner walls of the two preliminarily fixed U-shaped workpieces, and then the electric slider is opened to drive the annular ring 36 to rotate. When the annular ring 36 rotates, the control board 361 drives the inner plate 34 to perform telescopic operation on the outer sleeve 33 until the rubber block 35 at the end of the inner plate 34 abuts the inner wall of the U-shaped workpiece, thereby completing the internal support of the U-shaped workpieces of different specifications, and when the two discs are close to each other, the rubber blocks 35 on the two discs are respectively in the middle of the inner walls of the two U-shaped workpieces that have been preliminarily fixed. The corresponding fastening plates 342 respectively abut against the sides of the two U-shaped workpieces that are away from each other, thereby effectively avoiding looseness between the two workpieces during welding, resulting in poor welding effect. In addition, the setting of the rubber block 35 can also support the inner wall of the U-shaped workpiece, which can stabilize the welding of the workpiece and avoid deformation of the workpiece during welding. At the same time, the two corresponding fastening plates 342 respectively squeeze the two U-shaped workpieces, so that the connection between the two U-shaped workpieces fits together to form the required welding gap. During welding, the two U-shaped workpieces always remain in alignment under the action of the fastening plates 342 on both sides.

[0049] A rectangular groove 331 is provided on the outer sleeve 33, and a convex shaft 332 fixedly connected to the inner plate 34 is slidably installed in the rectangular groove 331. An annular ring 36 is slidably and rotatably installed on one side of the disc through an electric slider, and a control plate 361 is hinged between the annular ring 36 and multiple convex shafts 332.

[0050] As attached Figure 4 、 5As shown in , 6, the welding unit includes a top block 40, which is slidably connected to the U-shaped frame 133 through an electric slider, and a hollow frame 41 is installed on the lower end surface of the top block 40 through motor rotation, and a central shaft 42 is rotatably installed in the middle of the hollow frame 41, and a fixed frame 43 is fixedly installed on the central shaft 42. Lifting grooves 431 are opened on both sides of the fixed frame 43, and lifting shafts 432 are slidably installed in the lifting grooves 431. A placement box 44 is fixedly installed between the two lifting shafts 432, and a welding gun 45 is detachably installed in the placement box 44.

[0051] Two symmetrically arranged ear plates 433 are fixedly installed on one side of the fixing frame 43, and a shaft rod 434 is rotatably installed between the two ear plates 433 through an electric slider. Both ends of the shaft rod 434 are fixedly installed with lifting frames 435 that respectively cover the lifting shafts 432 on both sides.

[0052] A rotating wheel 421 is fixedly installed at both ends of the central shaft 42, and a driving tooth 422 that is slidably connected to the hollow frame 41 is provided on one side of the rotating wheel 421. An electric push rod 423 is fixedly installed on one side of the middle of the hollow frame 41, and a T-shaped plate 424 is fixedly installed on the telescopic end of the electric push rod 423. The T-shaped plate 424 is respectively fixed to the driving teeth 422 on both sides.

[0053] The electric slider is opened to drive the top block 40 to move inside the U-shaped frame 133, so that the joints of the two U-shaped workpieces below can be welded. Compared with the existing device, the present invention can meet the needs of welding the joints between the two U-shaped workpieces to connect and fix them, and the electric push rod 423 is opened and retracted to make the T-plate 424 rise and fall. When the T-plate 424 is raised and lowered, the rotating wheel 421 drives the fixing frame 43 to rotate along the axis of the central axis 42, so that the angle of the welding gun 45 in the middle of the fixing frame 43 is adjusted. By adjusting the angle of the welding gun 45, the present invention can weld the joints of the two U-shaped workpieces. When the placement box 44 moves, it can also be used for horizontal welding of conventional workpieces perpendicular to the ground, thereby increasing the flexibility of welding.

[0054] The electric slider is opened to drive the shaft 434 to rotate. When the shaft 434 rotates, the placement box 44 is raised and lowered in the fixed frame 43 through the lifting frame 435, thereby raising and lowering the welding gun 45. On the one hand, it assists the welding gun 45 in performing horizontal welding perpendicular to the ground on conventional workpieces. On the other hand, the lifting of the welding gun 45 can also control the welding distance while welding U-shaped workpieces.

[0055] As attached Figure 5As shown, side shafts 46 are fixedly installed on both sides of the placement box 44, and a sleeve plate 461 is installed between the two side shafts 46. Slide rods 47 are slidably installed on both sides of the sleeve plate 461. Springs are sleeved on the outside of the two slide rods 47. An arc plate 48 is installed between the two slide rods 47. The middle part of the arc plate 48 is through-set. Two groups of corresponding flip plates 481 are installed on both sides of the arc plate 48 through electric sliding. A cleaning roller 482 is installed to rotate together between each group of flip plates 481.

[0056] The arrangement of the arc plate 48 can limit the welding position of the welding gun 45, and protect the workpiece where no welding is required. At the same time, when moving, the arc plate 48 always fits with the arc-shaped outer part of the workpiece, so as to cooperate with the cleaning roller 482 to perform external cleaning operations on the welds of the workpiece where welding is required, thereby improving the welding quality by ensuring the cleanliness of the welding surface.

[0057] Another object of the present invention is to provide a welding method for machining welding equipment, comprising the following steps:

[0058] S1: Workpiece fixation:

[0059] The two U-shaped workpieces of the precision instrument to be welded are placed in the middle of the two supporting plates 24 in sequence so that they fit together. Then, the electric slider is opened to drive the two clamping plates 25 to move closer to each other, thereby preliminarily clamping the two U-shaped workpieces to be welded on the supporting plates 24. Then, the stabilizing unit is used to restrain the two workpieces on the side away from each other to prevent the workpieces from shifting when welding the gap between the two workpieces.

[0060] S2: Workpiece welding:

[0061] The cylinder 132 is turned on and retracted to move the U-shaped frame 133 downward as a whole until the arc plate 48 moves downward and then moves upward after contacting the workpiece. At this time, the welding gun 45 is turned on to weld the connection between the two workpieces, and with the setting of the arc plate 48, it can also block the parts of the workpiece that do not need to be welded. At the same time, the top block 40 slides in the U-shaped frame 133, and then arc welding can be performed on the workpiece according to its specific shape.

[0062] When in use, when placing U-shaped workpieces of different sizes before welding, the motor is turned on to drive the cam 26 to rotate. When the cam 26 rotates, the pushing plates 261 on both sides make the supporting plates 24 on both sides slide in the regulating grooves 22 on both sides. The distance between the two supporting plates 24 is adjusted according to the width of the U-shaped workpiece to be welded, so that the U-shaped workpiece can be placed on the two supporting plates 24. Then the electric slide is turned on to drive the front and rear clamping plates 25 to respectively perform preliminary fixing on the two workpieces to be welded;

[0063] When the U-shaped workpieces in the two precision instruments to be welded are preliminarily fixed, the electric slider is opened to drive the two discs to move closer to or away from each other on the support rod 32, until the rubber blocks 35 arranged on the two discs are respectively in the middle of the inner walls of the two preliminarily fixed U-shaped workpieces, and then the electric slider is opened to drive the annular ring 36 to rotate. When the annular ring 36 rotates, the control board 361 drives the inner plate 34 to perform telescopic operation on the outer sleeve 33 until the rubber block 35 at the end of the inner plate 34 abuts the inner wall of the U-shaped workpiece, thereby completing the internal support of the U-shaped workpieces of different specifications, and when the two discs are close to each other, the rubber blocks 35 on the two discs are respectively in the middle of the inner walls of the two U-shaped workpieces that have been preliminarily fixed. The corresponding fastening plates 342 respectively abut against the sides of the two U-shaped workpieces that are away from each other, thereby effectively preventing the two workpieces from loosening when welding, which causes poor welding effect. In addition, the provision of the rubber block 35 can also support the inner wall of the U-shaped workpiece, making the welding of the workpiece stable and preventing the workpiece from deforming during welding. At the same time, the two corresponding fastening plates 342 respectively squeeze the two U-shaped workpieces, so that the connection between the two U-shaped workpieces fits together to form the required welding gap. During welding, the two U-shaped workpieces always keep in alignment under the action of the fastening plates 342 on both sides.

[0064] The electric slider is opened to drive the top block 40 to move inside the U-shaped frame 133, so that the joints of the two U-shaped workpieces below can be welded. Compared with the existing device, the present invention can meet the needs of welding the joints between the two U-shaped workpieces to connect and fix them, and the electric push rod 423 is opened and retracted to make the T-shaped plate 424 rise and fall. When the T-shaped plate 424 rises and falls, the rotating wheel 421 drives the fixing frame 43 to rotate along the axis of the central axis 42, so that the angle of the welding gun 45 in the middle of the fixing frame 43 can be adjusted. By adjusting the angle of the welding gun 45, the present invention can be It can weld the joints of two U-shaped workpieces. When the placement box 44 moves, it can also be used for horizontal welding of conventional workpieces perpendicular to the ground, thereby increasing the flexibility of welding. The electric slider is opened to drive the shaft 434 to rotate. When the shaft 434 rotates, the placement box 44 is raised and lowered in the fixed frame 43 through the lifting frame 435, thereby raising and lowering the welding gun 45. On the one hand, it assists the welding gun 45 in performing horizontal welding of conventional workpieces perpendicular to the ground. On the other hand, the lifting of the welding gun 45 can also control the welding distance while welding the U-shaped workpiece.

[0065] The setting of the arc plate 48 can limit the welding position of the welding gun 45 and protect the workpiece where no welding is required. At the same time, when moving, the arc plate 48 always fits with the arc-shaped outside of the workpiece, so as to cooperate with the cleaning roller 482 to perform external cleaning operations on the welds of the workpiece that need to be welded, thereby improving the welding quality by ensuring the cleanliness of the welding surface of the welding place.

[0066] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A welding device for machining, comprising an operating box (1), characterized in that: The operation box (1) is arranged in a concave shape. Baffles (11) are slidably installed on the front and rear sides of the operation box (1). A smoking machine (14) symmetrically installed in the inner cavity of the operation box (1) is respectively provided between the two baffles (11). A mounting frame (12) fixed to the operation box (1) is provided below the smoking machine (14). A placement unit is detachably installed between the two mounting frames (12). A stabilizing unit for mutually fastening multiple workpieces when welding is performed is provided in the middle of the placement unit. Moving grooves (13) are provided on both sides of the upper end surface of the operation box (1). A T-shaped block (131) is slidably installed in the moving groove (13) via an electric slider. A cylinder (132) is fixedly installed on the upper end surface of the T-shaped block (131). A U-shaped frame (133) is commonly installed between the two cylinders (132). A U-shaped groove is provided on the inner wall of the U-shaped frame (133). A welding unit is slidably installed in the U-shaped groove via an electric slider.

2. The welding equipment for machining according to claim 1, characterized in that: The placement unit comprises an operating frame (21), wherein regulating grooves (22) are symmetrically provided on the operating frame (21), and a through groove provided on the operating frame (21) is provided on one side of the two regulating grooves (22) away from each other, and side grooves (23) provided on the operating frame (21) are connected on both sides of the regulating grooves (22), and a built-in rod (231) is slidably installed in the side groove (23), and a supporting plate (24) is fixedly installed between the two corresponding built-in rods (231).

3. The welding equipment for machining according to claim 2, characterized in that: Grooves are provided on both sides of the upper end surface of the supporting plate (24), and a clamping plate (25) is slidably installed in the groove through an electric slider. Cams (26) are installed at the front and rear of the middle part of the working frame (21) through motor rotation. Pushing plates (261) are hinged on both sides of the cam (26), and the side of the pushing plate (261) away from the cam (26) is hinged to the built-in rods (231) on both sides.

4. The welding equipment for machining according to claim 1, characterized in that: The stabilizing unit comprises two support frames (31) mounted on the working frame (21) and symmetrically arranged, a support rod (32) being mounted between the two support frames (31), two symmetrically arranged discs being slidably mounted on the support rod (32) via an electric slider, a plurality of external sleeves (33) being provided on the outside of the discs, an internal plate (34) being slidably mounted in the external sleeves (33), a rubber block (35) being fixedly mounted on the top of the internal plate (34), an outer rod (341) being fixedly mounted on one side of the internal plate (34), a fastening plate (342) being slidably mounted on the outer rod (341), and a spring being sleeved on the outer rod (341) being provided on the two fastening plates (342) on the sides away from each other.

5. The welding equipment for machining according to claim 4, characterized in that: The outer sleeve (33) is provided with a rectangular groove (331), a convex shaft (332) fixedly connected to the inner plate (34) is slidably installed in the rectangular groove (331), an annular ring (36) is slidably and rotatably installed on one side of the disc through an electric slider, and a control plate (361) is hinged between the annular ring (36) and the plurality of convex shafts (332).

6. The welding equipment for machining according to claim 1, characterized in that: The welding unit comprises a top block (40), the top block (40) and the U-shaped frame (133) are slidably connected via an electric slider, a hollow frame (41) is installed on the lower end surface of the top block (40) through motor rotation, a central shaft (42) is rotatably installed in the middle of the hollow frame (41), a fixed frame (43) is fixedly installed on the central shaft (42), lifting grooves (431) are provided on both sides of the fixed frame (43), lifting shafts (432) are slidably installed in the lifting grooves (431), a placement box (44) is fixedly installed between the two lifting shafts (432), and a welding gun (45) is detachably installed in the placement box (44).

7. The welding equipment for machining according to claim 6, characterized in that: Two symmetrically arranged ear plates (433) are fixedly mounted on one side of the fixing frame (43), a shaft (434) is rotatably mounted between the two ear plates (433) via an electric slider, and lifting frames (435) are fixedly mounted on both ends of the shaft (434) for respectively sleeved on the lifting shafts (432) on both sides.

8. The welding equipment for machining according to claim 6, characterized in that: Rotating wheels (421) are fixedly mounted on both ends of the central shaft (42), and a driving tooth (422) slidably connected to the hollow frame (41) is provided on one side of the rotating wheel (421). An electric push rod (423) is fixedly mounted on one side of the middle of the hollow frame (41), and a T-shaped plate (424) is fixedly mounted on the telescopic end of the electric push rod (423), and the T-shaped plate (424) is respectively fixed to the driving teeth (422) on both sides.

9. The welding equipment for machining according to claim 6, characterized in that: Side shafts (46) are fixedly installed on both sides of the placement box (44), a sleeve plate (461) is installed between the two side shafts (46), slide rods (47) are slidably installed on both sides of the sleeve plate (461), springs are sleeved on the outside of the two slide rods (47), an arc plate (48) is installed between the two slide rods (47), the middle part of the arc plate (48) is through-set, two groups of corresponding flip plates (481) are installed on both sides of the arc plate (48) through electric sliding, and a cleaning roller (482) is installed between each group of flip plates (481) for rotation.

10. The welding method of a mechanical processing welding device according to claim 1, applied to the mechanical processing welding device according to claim (9), characterized in that: The following steps are involved: S1: Workpiece fixation: Two U-shaped workpieces of the precision instrument to be welded are sequentially placed in the middle of two supporting plates (24) so ​​that they fit together, and then the electric slider is opened to drive the two clamping plates (25) to move closer to each other, thereby preliminarily clamping the two U-shaped workpieces to be welded on the supporting plates (24), and then the stabilizing unit is used to restrain the side of the two workpieces that are away from each other, so as to prevent the workpieces from shifting when welding at the gap between the two workpieces; S2: Workpiece welding: The cylinder (132) is opened and retracted to make the U-shaped frame (133) move downward as a whole until the arc plate (48) moves upward after contacting the workpiece when moving downward. At this time, the welding gun (45) is opened to weld the connection between the two workpieces, and under the setting of the arc plate (48), the parts of the workpiece that do not need to be welded can be blocked. At the same time, the top block (40) is matched to slide in the U-shaped frame (133), so that arc welding can be performed on the workpiece according to the specific shape.

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