Metal-part welding apparatus and method based on angular direction change

Abstract

A metal-part welding apparatus based on an angular direction change, comprising a base (1) and a welding torch body (2). The apparatus does not require the cooperation between two operators for welding, and by means of the welding torch body, circumferential weld seams can be automatically welded, thereby improving the work efficiency and welding precision. The present disclosure also relates to a metal-part welding method based on an angular direction change.

Description

Metal parts welding equipment and method based on angle change

[0001] The present invention belongs to the field of welding technology, and in particular relates to a metal parts welding device and method based on angle change.

[0002] Metal parts refer to the collective name for metal blocks, metal bars, metal tubes, etc. of various specifications and shapes made of metal materials. Steel is widely used in industry and construction. Metal parts need to be processed and formed using welding equipment during production and processing. Among them, when several pipe fittings are evenly welded to an annular workpiece in a circular shape, the annular workpiece needs to be clamped and fixed by a clamp, and then the worker holds the end of the pipe fitting against the side wall of the annular workpiece, and finally the worker uses a handheld welding gun to weld the circumferential weld.

[0003] However, it is worth considering that when one worker holds the pipe while welding, the operation is inconvenient, and when two workers cooperate to weld, the work efficiency is low, which is not convenient for popularization. Therefore, in order to solve the above problems, a related facility that better meets the use needs is needed.

[0004] In view of the above situation, in order to overcome the defects of the existing technology, the present invention provides a metal welding equipment and method based on angle change, which effectively solves the problem in the above background technology that when one worker holds the pipe while welding, the operation is inconvenient, and when two workers cooperate to weld, the work efficiency is low.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a metal welding device based on angle change, comprising a base and a welding gun body, wherein the top of the base is fixedly connected to a support frame, a rotating sleeve rotatably connected to the support frame is passed through the support frame, a driving member cooperating with the rotating sleeve is installed on the support frame, a movable seat is provided above the rotating sleeve, the movable seat and the rotating sleeve are connected by an elastic support unit, the support frame is equipped with a pusher cooperating with the movable seat, and the movable seat and the welding gun body are connected by an angle change translation structure;

[0006] A first motor is fixedly connected to the top of the base, and an output end of the first motor is fixedly connected to a mounting box. The mounting box is equipped with a fixing assembly for fixing the inner wall of the annular workpiece. A pipe positioning column is provided on the side of the rotating sleeve facing the mounting box. A positioning groove for positioning the pipe is provided on the end of the pipe positioning column away from the rotating sleeve. The pipe positioning column and the support frame are connected by a horizontal moving mechanism.

[0007] Preferably, the angle-changing translation structure includes an adjustment box arranged above the welding gun body, the adjustment box is rotatably connected to a rotating shaft on one side facing the movable seat, a first screw rod is provided in the adjustment box, the outer sleeve of the first screw rod is provided with a rotatably connected support part, and the support part is fixedly connected to the inner wall of the adjustment box, an avoidance hole is provided on the bottom inner wall of the adjustment box, the top end of the welding gun body passes through the avoidance hole, and the top end of the welding gun body is rotatably connected to the movable block located in the adjustment box, the first screw rod passes through the movable block, and the movable block and the first screw rod are connected in a threaded manner, and the movable block and the adjustment box are connected through a guide member The rotating shaft and the first screw rod are connected by a friction unit, and side plates are respectively provided on both sides of the welding gun body, and the top of the side plate is fixedly connected to the bottom of the adjustment box. A guide hole is opened on the side plate, and a fixing column is provided in the guide hole, and the fixing column and the welding gun body are fixedly connected. The adjustment box is fixedly installed with a movable frame, and the second screw rod and the first guide column are passed through the movable frame. The first guide column and the movable seat are fixedly connected, and the second motor is fixedly installed on the movable seat. The output end of the second motor is fixedly connected to the second screw rod, and the second screw rod and the movable frame are connected by a threaded connection, and the second screw rod and the rotating shaft are connected by a sliding unit.

[0008] Preferably, the guide member includes a slider fixedly mounted on the top of the movable block, the outer portion of the slider is sleeved with a rectangular ring, and the rectangular ring is fixedly connected to the top inner wall of the adjustment box.

[0009] Preferably, the friction unit includes a first friction disk fixedly mounted on the first screw rod near one end of the rotating shaft, the rotating shaft is fixedly connected to the second friction disk located in the adjustment box, and the second friction disk is in contact with the first friction disk, and the sliding unit includes a first prism fixedly mounted on the end of the rotating shaft away from the first screw rod, the second screw rod is provided with a first sliding groove matching the first prism, and the first prism is located in the first sliding groove.

[0010] Preferably, the elastic support unit includes a slide fixedly mounted on the rotating sleeve, the movable seat is provided with a second slide groove matching the slide, the end of the slide away from the rotating sleeve is located in the second slide groove, and the inner walls of the slide and the second slide groove are connected by a first compression spring, the pusher includes a pressing ring sleeved on the outside of the rotating sleeve, the pressing ring and the support frame are connected by two first hydraulic telescopic rods, the end of the movable seat away from the rotating sleeve is fixedly connected to the support column, the inner wall of the pressing ring is provided with an inclined surface matching the support column, and the end of the support column away from the movable seat is in contact with the inclined surface on the pressing ring.

[0011] Preferably, the driving member includes a first gear fixedly mounted on the outside of the rotating sleeve, the support frame is mounted with a third motor fixedly connected thereto, and the output end of the third motor is fixedly connected to a second gear meshing with the first gear.

[0012] Preferably, the horizontal moving mechanism includes a movable column arranged at one end of the pipe positioning column close to the rotating sleeve, and the rotating sleeve is arranged on the outside of the movable column, the movable column is provided with a third sliding groove, a second prism is provided in the third sliding groove, one end of the second prism is fixedly connected to the pipe positioning column, the other end of the second prism is connected to the inner wall of the third sliding groove by a second compression spring, the support frame is fixedly installed with a fixed frame, and the end of the movable column away from the pipe positioning column is connected to the fixed frame by a second hydraulic telescopic rod.

[0013] Preferably, the fixing assembly includes several splints arranged above the base, and several third screw rods are rotatably connected to the side walls of the mounting box, the outer sleeve of the third screw rod is provided with a threaded sleeve, and the end of the threaded sleeve away from the mounting box is fixedly connected to the corresponding splint, a second guide column is provided above the third screw rod, the second guide column and the mounting box are fixedly connected, the outer sleeve of the second guide column is provided with a guide sleeve, and the guide sleeve and the splint are fixedly connected, a fourth motor is fixedly connected to the top of the mounting box, the output end of the fourth motor is fixedly connected to the first bevel gear located in the mounting box, the end of the third screw rod away from the splint is fixedly connected to the second bevel gear located in the mounting box, and the second bevel gear is meshed with the first bevel gear.

[0014] Preferably, a rectangular hole is provided on the splint, and a support block is provided above the guide sleeve, which passes through the corresponding rectangular hole. A fourth screw rod passes through the support block, and the fourth screw rod is located on the side of the splint facing the fourth motor. Both ends of the fourth screw rod are fixedly connected to the splint through connecting blocks respectively, and two nuts are provided on the outer sleeve of the fourth screw rod, and the two adjacent nuts are respectively located at the top and bottom of the support block.

[0015] The present invention also provides a metal welding method based on angle change, using the metal welding device based on angle change as described above, comprising the following steps:

[0016] Step 1: Adjust the horizontal position of the welding gun body through the angle-changing translation structure, and adjust the inclination angle of the welding gun body through the angle-changing translation structure, and fix the annular workpiece above the installation box through the fixing assembly;

[0017] Step 2: The worker inserts the end of the pipe into the positioning groove, and drives the pipe positioning column and the pipe to move through the horizontal moving mechanism, so that the end of the pipe away from the pipe positioning column abuts against the annular workpiece;

[0018] Step 3: Use the pusher to push the movable seat toward the rotating sleeve to change the distance between the welding gun body and the girth weld;

[0019] Step 4: When the distance between the welding gun body and the girth weld reaches the preset value, welding is performed through the welding gun body, and the driving member drives the rotating sleeve and the movable seat to rotate synchronously, so that the welding gun body rotates 360 degrees around the girth weld to complete the welding.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The horizontal position of the welding gun body is adjusted by the angle-changing translation structure, and the inclination angle of the welding gun body is adjusted by the angle-changing translation structure. The annular workpiece is fixed above the installation box by the fixing assembly. The staff inserts the end of the pipe into the positioning groove, and drives the pipe positioning column and the pipe to move through the horizontal moving mechanism so that the pipe is away from one end of the pipe positioning column and abuts against the annular workpiece. The movable seat is pushed toward the rotating sleeve by the pusher to change the spacing between the welding gun body and the girth weld. When the spacing between the welding gun body and the girth weld reaches the preset value, welding is performed through the welding gun body, and the driving member drives the rotating sleeve and the movable seat to rotate synchronously so that the welding gun body rotates 360 degrees around the girth weld to complete welding. There is no need for two staff members to cooperate in welding. Automatic welding of the girth weld can be completed through the welding gun body, which improves work efficiency and welding accuracy.

[0022] 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.

[0023] [Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] FIG2 is a partial enlarged schematic diagram of point A in FIG1 of the present invention;

[0025] FIG3 is a schematic structural diagram of a driving member of the present invention;

[0026] FIG4 is a schematic diagram of the structure of the elastic support unit of the present invention when it is disassembled;

[0027] FIG5 is a schematic diagram of the structure of the disassembled horizontal moving mechanism of the present invention;

[0028] FIG6 is a schematic diagram of the structure of the interior of the adjustment box of the present invention;

[0029] FIG7 is a schematic structural diagram of a welding gun body according to the present invention;

[0030] FIG8 is a schematic diagram of the structure inside the installation box of the present invention.

[0031] In the figure: 1. Base; 2. Welding gun body; 3. Movable seat; 4. Rotating sleeve; 5. Support frame; 6. Pipe positioning column; 7. Positioning slot; 8. First motor; 9. Mounting box; 10. Adjustment box; 11. Rotating shaft; 12. First screw rod; 13. Support part; 14. Movable block; 15. Avoidance hole; 16. Side plate; 17. Guide hole; 18. Fixed column; 19. First friction disc; 20. Rectangular ring; 21. Slider; 22. Second friction disc; 23. Movable frame; 24. Second screw rod; 25. First guide column; 26. First prism; 27. First slide slot; 28. Second motor; 29. ​​Slide plate; 30. Second slide; 31. First compression spring; 32. Support column; 33. Pressing ring; 34. First hydraulic telescopic rod; 35. First gear; 36. Third motor; 37. Second gear; 38. Movable column; 39. Third slide; 40. Second prism; 41. Second compression spring; 42. Fixed frame; 43. Second hydraulic telescopic rod; 44. Clamp; 45. Third screw rod; 46. Threaded sleeve; 47. Second guide column; 48. Guide sleeve; 49. First bevel gear; 50. Fourth motor; 51. Second bevel gear; 52. Support block; 53. Rectangular hole; 54. Fourth screw rod; 55. Connecting block; 56. Nut.

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Embodiment 1, as shown in Figures 1 and 3, the present invention includes a base 1 and a welding gun body 2, a support frame 5 is fixedly connected to the top of the base 1, a rotating sleeve 4 rotatably connected is passed through the support frame 5, the support frame 5 is equipped with a driving member that cooperates with the rotating sleeve 4, a movable seat 3 is provided above the rotating sleeve 4, the movable seat 3 and the rotating sleeve 4 are connected by an elastic support unit, the support frame 5 is equipped with a pusher that cooperates with the movable seat 3, and the movable seat 3 and the welding gun body 2 are connected by an angle-changing translation structure;

[0034] The top of the base 1 is fixedly connected to a first motor 8, and the output end of the first motor 8 is fixedly connected to a mounting box 9. The mounting box 9 is equipped with a fixing assembly for fixing the inner wall of the annular workpiece. A pipe positioning column 6 is provided on the side of the rotating sleeve 4 facing the mounting box 9. A positioning groove 7 for positioning the pipe position is provided on the end of the pipe positioning column 6 away from the rotating sleeve 4. The pipe positioning column 6 and the support frame 5 are connected by a horizontal moving mechanism; the horizontal position of the welding gun body 2 is adjusted by the angle changing translation structure, and the inclination angle of the welding gun body 2 is adjusted by the angle changing translation structure. The annular workpiece is fixed above the mounting box 9 by the fixing assembly, and the staff inserts the end of the pipe into the positioning In the groove 7, the pipe positioning column 6 and the pipe are driven to move by the horizontal moving mechanism so that one end of the pipe away from the pipe positioning column 6 abuts against the annular workpiece, and the movable seat 3 is pushed toward the rotating sleeve 4 by the pusher to change the distance between the welding gun body 2 and the girth weld. When the distance between the welding gun body 2 and the girth weld reaches a preset value, welding is performed through the welding gun body 2, and the driving member drives the rotating sleeve 4 and the movable seat 3 to rotate synchronously so that the welding gun body 2 rotates 360 degrees around the girth weld to complete welding. There is no need for two workers to cooperate in welding. The girth weld can be automatically welded through the welding gun body 2, which improves work efficiency and welding accuracy.

[0035] Embodiment 2, based on embodiment 1, is given by Figures 2, 6 and 7. The angle-changing translation structure includes an adjustment box 10 arranged above the welding gun body 2. The adjustment box 10 is rotatably connected to a rotating shaft 11 on one side of the movable seat 3. A first screw rod 12 is provided in the adjustment box 10. The outer sleeve of the first screw rod 12 is provided with a rotatably connected support portion 13, and the support portion 13 is fixedly connected to the inner wall of the adjustment box 10. An avoidance hole 15 is opened on the bottom inner wall of the adjustment box 10. The top of the welding gun body 2 passes through the avoidance hole 15, and the welding gun body The top of the body 2 is rotatably connected to the movable block 14 located in the adjustment box 10, the first screw rod 12 passes through the movable block 14, and the connection between the movable block 14 and the first screw rod 12 is a threaded connection. The movable block 14 and the adjustment box 10 are connected by a guide member, and the rotating shaft 11 and the first screw rod 12 are connected by a friction unit. Side plates 16 are respectively provided on both sides of the welding gun body 2. The top of the side plate 16 is fixedly connected to the bottom of the adjustment box 10. A guide hole 17 is opened on the side plate 16, and a fixing column 18 is provided in the guide hole 17, and the fixing column 18 and the welding gun body are fixed. 2 is fixedly connected. The adjustment box 10 is fixedly installed with a movable frame 23. The movable frame 23 is penetrated by a second screw rod 24 and a first guide column 25. The first guide column 25 is fixedly connected to the movable seat 3. The movable seat 3 is fixedly installed with a second motor 28. The output end of the second motor 28 is fixedly connected to the second screw rod 24. The connection between the second screw rod 24 and the movable frame 23 is a threaded connection. The second screw rod 24 and the rotating shaft 11 are connected by a sliding unit. The guide member includes a slider 21 fixedly installed on the top of the movable block 14. The outer sleeve of the slider 21 is provided with a rectangular ring. 20, the rectangular ring 20 is fixedly connected to the top inner wall of the adjustment box 10, the friction unit includes a first friction disc 19 fixedly mounted on the end of the first screw 12 near the rotating shaft 11, the rotating shaft 11 is fixedly connected to the second friction disc 22 located in the adjustment box 10, and the second friction disc 22 is in contact with the first friction disc 19, the sliding unit includes a first prism 26 fixedly mounted on the end of the rotating shaft 11 away from the first screw 12, the second screw 24 is provided with a first slide groove 27 that cooperates with the first prism 26, and the first prism 26 is located in the first slide groove 27;

[0036] The second motor 28 drives the second screw rod 24 to rotate, and the second screw rod 24 drives the movable frame 23 and the adjustment box 10 to move horizontally, and the movable frame 23 slides relative to the first guide column 25. The design of the first guide column 25 allows the movable frame 23 and the adjustment box 10 to move smoothly in the horizontal direction, and the adjustment box 10 drives the first prism 26 to slide relative to the first slide groove 27 through the rotating shaft 11. When the second screw rod 24 rotates, the second screw rod 24 drives the rotating shaft 11 and the second friction plate 22 to rotate through the first prism 26. Since the side of the slider 21 away from the rotating shaft 11 contacts the inner wall of the rectangular ring 20 at this time, the rectangular ring 20 and the movable block 14 are stationary, and the second friction plate 22 cannot drive the first friction plate 19 and the first screw rod 12 to rotate by friction. When the adjustment box 10 moves horizontally to the preset position, the second motor 28 drives the second screw rod 24 to rotate in the opposite direction, and the second screw rod 2 The first prism 26 drives the rotating shaft 11 and the second friction disc 22 to rotate in opposite directions. The second friction disc 22 drives the first friction disc 19 and the first screw 12 to rotate through friction, so that the movable block 14 drives the slider 21 to slide in the rectangular ring 20. The movable block 14 drives the welding gun body 2 to move synchronously, changing the inclination angle of the welding gun body 2. The fixed column 18 slides upward in the guide hole 17. At the same time, the second screw 24 drives the movable frame 23 and the adjustment box 10 to move a certain distance toward the movable seat 3. When the inclination angle of the welding gun body 2 is adjusted, the adjustment box 10 moves a certain distance toward the movable seat 3. Therefore, in order for the adjustment box 10 to move horizontally to the preset position, the adjustment box 10 needs to move a certain distance in the horizontal direction. The certain distance that the adjustment box 10 moves horizontally is equal to the distance that the adjustment box 10 moves toward the movable seat 3 caused by the change in the inclination angle of the welding gun body 2.

[0037] The third embodiment is given in Figures 2, 3 and 4 on the basis of the first embodiment. The elastic support unit includes a slide plate 29 fixedly mounted on the rotating sleeve 4. The movable seat 3 is provided with a second slide groove 30 that cooperates with the slide plate 29. The end of the slide plate 29 away from the rotating sleeve 4 is located in the second slide groove 30, and the inner wall of the slide plate 29 and the second slide groove 30 is connected by a first compression spring 31. The pusher includes a pressing ring 33 sleeved on the outside of the rotating sleeve 4. The pressing ring 33 and the support frame 5 are connected by two first hydraulic telescopic rods 34. The end of the movable seat 3 away from the rotating sleeve 4 is fixedly connected to the support column 32. The inner wall of the pressing ring 33 is provided with an inclined surface that cooperates with the support column 32, and the end of the support column 32 away from the movable seat 3 contacts the inclined surface on the pressing ring 33. The driving member includes a first gear 35 fixedly sleeved on the outside of the rotating sleeve 4. The support frame 5 is equipped with a fixedly connected third motor 36. The output end of the third motor 36 is fixedly connected to the second gear 37 that meshes with the first gear 35.

[0038] Through the design of the slide plate 29, the second slide groove 30 and the first compression spring 31, the movable seat 3 is elastically connected relative to the rotating sleeve 4, and the pressing ring 33 is driven by the first hydraulic telescopic rod 34 to move horizontally, so that the support column 32 slides on the inclined surface of the pressing ring 33, and the pressing ring 33 applies pressure on the support column 32, so that the movable seat 3 slides relative to the slide plate 29 and the rotating sleeve 4. The first compression spring 31 is in a compressed state, which can change the position of the movable seat 3 and the welding gun body 2, and then adjust the spacing between the welding gun body 2 and the circumferential weld. The second gear 37 is driven to rotate by the third motor 36, and the second gear 37 drives the rotating sleeve 4, the slide plate 29 and the movable seat 3 to rotate synchronously through the first gear 35. The end of the support column 32 away from the movable seat 3 slides on the inclined surface of the pressing ring 33, which can make the welding gun body 2 rotate around the circumferential weld.

[0039] The fourth embodiment, based on the first embodiment, is given by,,, and Figures 8. The horizontal movement mechanism includes a movable column 38 arranged on the pipe positioning column 6 near one end of the rotating sleeve 4, and the rotating sleeve 4 is sleeved on the outside of the movable column 38. The movable column 38 is provided with a third slide groove 39, and a second prism 40 is provided in the third slide groove 39. One end of the second prism 40 is fixedly connected to the pipe positioning column 6, and the other end of the second prism 40 is connected to the inner wall of the third slide groove 39 by a second compression spring 41. The support frame 5 is fixedly installed with a fixed frame 42, and the end of the movable column 38 away from the pipe positioning column 6 is connected to the fixed frame 42 by a second hydraulic telescopic rod 43. The fixing assembly includes a plurality of splints 44 arranged above the base 1, and a plurality of third screw rods 45 are rotatably connected to the side wall of the installation box 9. The outer sleeve of the third screw rod 45 is provided with a threaded sleeve 46, and the end of the threaded sleeve 46 away from the installation box 9 is fixedly connected to the corresponding splint 44. A second guide column is provided above the third screw rod 45. 47, the second guide column 47 is fixedly connected to the mounting box 9, the outer sleeve of the second guide column 47 is provided with a guide sleeve 48, and the guide sleeve 48 is fixedly connected to the splint 44, the top of the mounting box 9 is fixedly connected to the fourth motor 50, the output end of the fourth motor 50 is fixedly connected to the first bevel gear 49 located in the mounting box 9, the end of the third screw rod 45 away from the splint 44 is fixedly connected to the second bevel gear 51 located in the mounting box 9, and the second bevel gear 51 is meshed with the first bevel gear 49, a rectangular hole 53 is provided on the splint 44, and a support block 52 is provided above the guide sleeve 48. The support block 52 passes through the corresponding rectangular hole 53, and a fourth screw rod 54 passes through the support block 52, and the fourth screw rod 54 is located on the side of the splint 44 facing the fourth motor 50, and the two ends of the fourth screw rod 54 are fixedly connected to the splint 44 through the connecting block 55, and the outer sleeve of the fourth screw rod 54 is provided with two nuts 56, and the two adjacent nuts 56 are respectively located at the top and bottom of the support block 52;

[0040] The staff drives the support block 52 to move vertically relative to the rectangular hole 53 to adjust the initial height of the support block 52. After the height of the support block 52 is adjusted, the staff drives the nuts 56 located above and below the support block 52 to rotate so that the two adjacent nuts 56 clamp the support block 52, which can fix the support block 52 relative to the clamping plate 44. The staff sets the annular processing part on the outside of several clamping plates 44 and supports the bottom of the annular processing part through the support block 52. The fourth motor 50 drives the first bevel gear 49 to rotate. The first bevel gear 49 drives several third screw rods 45 to rotate synchronously through the second bevel gear 51. The third screw rod 45 drives the threaded sleeve 46 and the movable block 14 to move in the direction away from the installation box 9, and the guide sleeve 48 slides relative to the second guide post 47. Through the design of the second guide post 47 and the guide sleeve 48, the clamping plate 44 can be moved synchronously in the horizontal direction. As the clamping plate 44 continues to move, several clamping plates 44 finally press the inner wall of the annular processing part respectively, which can make the annular processing part relative to the clamping plate 44 is fixed to the installation box 9, and the movable column 38, the second prism 40 and the pipe positioning column 6 are driven by the second hydraulic telescopic rod 43 to move horizontally to adjust the initial spacing between the pipe positioning column 6 and the annular processing part. After the position of the pipe positioning column 6 is adjusted, the staff drives the pipe positioning column 6 and the second prism 40 to move in the direction away from the annular processing part, and the second compression spring 41 is in a compressed state to leave space for the pipe positioning column 6 and the annular processing part. The staff places the pipe to be welded between the pipe positioning column 6 and the annular processing part, and then the staff drives the pipe to move horizontally so that the end of the pipe positioning column 6 is inserted into the positioning groove 7, and then the staff releases the pipe positioning column 6, and the second compression spring 41 drives the second prism 40 and the pipe positioning column 6 to move so that the pipe positioning column 6 drives the end of the pipe to be tightly attached to the outer wall of the annular processing part, so that the pipe and the annular processing part are initially fixed, and the annular weld of the annular processing part and the pipe can be welded by the welding gun body 2.

[0041] A metal welding method based on angle change of this embodiment uses the metal welding device based on angle change as described above, and includes the following steps:

[0042] Step 1: Adjust the horizontal position of the welding gun body 2 and the tilt angle of the welding gun body 2 through the angle-changing translation structure, and fix the annular workpiece above the mounting box 9 through the fixing assembly;

[0043] Step 2: The worker inserts the end of the pipe into the positioning groove 7, and drives the pipe positioning column 6 and the pipe to move through the horizontal moving mechanism, so that the end of the pipe away from the pipe positioning column 6 abuts against the annular workpiece;

[0044] Step 3: Use the pusher to push the movable seat 3 toward the rotating sleeve 4 to change the distance between the welding gun body 2 and the girth weld;

[0045] Step 4: When the distance between the welding gun body 2 and the circumferential weld reaches a preset value, welding is performed through the welding gun body 2, and the driving member drives the rotating sleeve 4 and the movable seat 3 to rotate synchronously, so that the welding gun body 2 rotates 360 degrees around the circumferential weld to complete the welding.

[0046] Working principle: During operation, the horizontal position of the welding gun body 2 is adjusted by the angle-changing translation structure, and the tilt angle of the welding gun body 2 is adjusted by the angle-changing translation structure, so that the welding gun body 2 is in a preset position, and the annular workpiece is fixed above the installation box 9 by the fixing assembly. The staff places the pipe to be welded between the annular workpiece and the pipe positioning column 6, and the staff inserts the end of the pipe into the positioning groove 7, and drives the pipe positioning column 6 and the pipe to move through the horizontal moving mechanism, so that the end of the pipe away from the pipe positioning column 6 abuts against the annular workpiece, and the pusher pushes the movable seat 3 toward the rotating sleeve 4, so that the movable seat 3 drives the welding gun body 2 to move synchronously, and changes the distance between the welding gun body 2 and the girth weld. When the distance between the welding gun body 2 and the girth weld When the distance reaches the preset value, welding is performed through the welding gun body 2, and the driving member drives the rotating sleeve 4 and the movable seat 3 to rotate synchronously, so that the welding gun body 2 rotates 360 degrees around the circumferential weld seam, and the welding is completed. The pipe positioning column 6 is driven to move by the horizontal moving mechanism, so that the pipe positioning column 6 is no longer sleeved on the end of the pipe, and the installation box 9 is driven to rotate by the first motor 8. The installation box 9 drives the annular workpiece to rotate through the fixed component, so that the next position of the annular workpiece that needs to be welded is moved to one side of the pipe positioning column 6. The staff then places the next pipe that needs to be welded between the pipe positioning column 6 and the annular workpiece, and the next welding can be performed. There is no need for two staff members to cooperate in welding. The circumferential weld can be automatically welded by the welding gun body 2, which improves work efficiency and welding accuracy.

[0047] The second motor 28 drives the second screw rod 24 to rotate, and the second screw rod 24 drives the movable frame 23 and the adjustment box 10 to move horizontally, and the movable frame 23 slides relative to the first guide column 25. The design of the first guide column 25 allows the movable frame 23 and the adjustment box 10 to move smoothly in the horizontal direction, and the adjustment box 10 drives the first prism 26 to slide relative to the first slide groove 27 through the rotating shaft 11. When the second screw rod 24 rotates, the second screw rod 24 drives the rotating shaft 11 and the second friction plate 22 to rotate through the first prism 26. Since the side of the slider 21 away from the rotating shaft 11 contacts the inner wall of the rectangular ring 20 at this time, the rectangular ring 20 and the movable block 14 are stationary, and the second friction plate 22 cannot drive the first friction plate 19 and the first screw rod 12 to rotate by friction. When the adjustment box 10 moves horizontally to the preset position, the second motor 28 drives the second screw rod 24 to rotate in the opposite direction, and the second screw rod 2 4 can drive the rotating shaft 11 and the second friction disk 22 to rotate in opposite directions through the first prism 26, and the second friction disk 22 drives the first friction disk 19 and the first screw 12 to rotate through the friction force, so that the movable block 14 drives the slider 21 to slide in the rectangular ring 20, and the movable block 14 drives the welding gun body 2 to move synchronously, changing the inclination angle of the welding gun body 2, and the fixed column 18 slides upward in the guide hole 17. At the same time, the second screw 24 drives the movable frame 23 and the adjustment box 10 to move a certain distance toward the movable seat 3. When the inclination angle of the welding gun body 2 is adjusted, the adjustment box 10 moves a certain distance toward the movable seat 3. Therefore, in order for the adjustment box 10 to move horizontally to the preset position, the adjustment box 10 needs to move a certain distance in the horizontal direction, and the certain distance the adjustment box 10 moves horizontally is equal to the certain distance the adjustment box 10 moves toward the movable seat 3 caused by the change in the inclination angle of the welding gun body 2.

[0048] The design of the slide plate 29, the second slide groove 30 and the first compression spring 31 is used to make the movable seat 3 elastically connected relative to the rotating sleeve 4, and the pressing ring 33 is driven by the first hydraulic telescopic rod 34 to move horizontally, so that the support column 32 slides on the inclined surface of the pressing ring 33, and the pressing ring 33 applies pressure to the support column 32, so that the movable seat 3 slides relative to the slide plate 29 and the rotating sleeve 4. The first compression spring 31 is in a compressed state, which can change the position of the movable seat 3 and the welding gun body 2, and then adjust the spacing between the welding gun body 2 and the circumferential weld. The second gear 37 is driven to rotate by the third motor 36, and the second gear 37 drives the rotating sleeve 4, the slide plate 29 and the movable seat 3 to rotate synchronously through the first gear 35. The end of the support column 32 away from the movable seat 3 slides on the inclined surface of the pressing ring 33, which can make the welding gun body 2 rotate around the circumferential weld.

[0049] The staff drives the support block 52 to move vertically relative to the rectangular hole 53 to adjust the initial height of the support block 52. After the height of the support block 52 is adjusted, the staff drives the nuts 56 located above and below the support block 52 to rotate so that the two adjacent nuts 56 clamp the support block 52, which can fix the support block 52 relative to the clamping plate 44. The staff sets the annular processing part on the outside of several clamping plates 44 and supports the bottom of the annular processing part through the support block 52. The fourth motor 50 drives the first bevel gear 49 to rotate. The first bevel gear 49 drives several third screw rods 45 to rotate synchronously through the second bevel gear 51. The third screw rod 45 drives the threaded sleeve 46 and the movable block 14 to move in the direction away from the installation box 9, and the guide sleeve 48 slides relative to the second guide post 47. Through the design of the second guide post 47 and the guide sleeve 48, the clamping plate 44 can be moved synchronously in the horizontal direction. As the clamping plate 44 continues to move, several clamping plates 44 finally press the inner wall of the annular processing part respectively, which can make the annular processing part relative to the clamping plate 44 is fixed to the installation box 9, and the movable column 38, the second prism 40 and the pipe positioning column 6 are driven by the second hydraulic telescopic rod 43 to move horizontally to adjust the initial spacing between the pipe positioning column 6 and the annular processing part. After the position of the pipe positioning column 6 is adjusted, the staff drives the pipe positioning column 6 and the second prism 40 to move in the direction away from the annular processing part, and the second compression spring 41 is in a compressed state to leave space for the pipe positioning column 6 and the annular processing part. The staff places the pipe to be welded between the pipe positioning column 6 and the annular processing part, and then the staff drives the pipe to move horizontally so that the end of the pipe positioning column 6 is inserted into the positioning groove 7, and then the staff releases the pipe positioning column 6, and the second compression spring 41 drives the second prism 40 and the pipe positioning column 6 to move so that the pipe positioning column 6 drives the end of the pipe to be tightly attached to the outer wall of the annular processing part, so that the pipe and the annular processing part are initially fixed, and the annular weld of the annular processing part and the pipe can be welded by the welding gun body 2.

[0050] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

A metal welding device based on angle change comprises a base (1) and a welding gun body (2), and is characterized in that: The top of the base (1) is fixedly connected to a support frame (5), a rotating sleeve (4) connected in rotation is passed through the support frame (5), a driving member matched with the rotating sleeve (4) is installed on the support frame (5), a movable seat (3) is provided above the rotating sleeve (4), the movable seat (3) and the rotating sleeve (4) are connected through an elastic support unit, the support frame (5) is installed with a pusher matched with the movable seat (3), and the movable seat (3) and the welding gun body (2) are connected through an angle-changing translation structure; the top of the base (1) is fixedly connected to a first motor (8), the output end of the first motor (8) is fixedly connected to a mounting box (9), the mounting box (9) is installed with a fixing assembly for fixing the inner wall of the annular workpiece, a pipe positioning column (6) is provided on the side of the rotating sleeve (4) facing the mounting box (9), a positioning groove (7) for positioning the pipe position is provided on the end of the pipe positioning column (6) away from the rotating sleeve (4), and the pipe positioning column (6) and the support frame (5) are connected through a horizontal moving mechanism. The metal welding equipment based on angle change according to claim 1 is characterized in that: The angle-changing translation structure comprises an adjustment box (10) arranged above the welding gun body (2), the adjustment box (10) being rotatably connected to a rotating shaft (11) on one side facing the movable seat (3), a first screw rod (12) being provided in the adjustment box (10), a rotatably connected support portion (13) being sleeved on the outside of the first screw rod (12), and the support portion (13) being fixedly connected to the inner wall of the adjustment box (10), a avoidance hole (15) being provided on the bottom inner wall of the adjustment box (10), the top end of the welding gun body (2) passing through the avoidance hole (15), and the top end of the welding gun body (2) being rotatably connected to a movable block (14) located in the adjustment box (10), the first screw rod (12) passing through the movable block (14), and the movable block (14) and the first screw rod (12) being connected in a threaded manner, the movable block (14) and the adjustment box (10) being connected via a guide member, and the rotating shaft (11) and The first screw rod (12) is connected through a friction unit, and side plates (16) are respectively provided on both sides of the welding gun body (2). The top of the side plate (16) is fixedly connected to the bottom of the adjustment box (10), and a guide hole (17) is opened on the side plate (16). A fixing column (18) is provided in the guide hole (17), and the fixing column (18) is fixedly connected to the welding gun body (2). The adjustment box (10) is fixedly installed with a movable frame (23), and a second screw rod (24) and a first guide column (25) are passed through the movable frame (23). The first guide column (25) is fixedly connected to the movable seat (3), and a second motor (28) is fixedly installed on the movable seat (3). The output end of the second motor (28) is fixedly connected to the second screw rod (24), and the connection mode of the second screw rod (24) and the movable frame (23) is a threaded connection. The second screw rod (24) and the rotating shaft (11) are connected through a sliding unit. The metal welding equipment based on angle change according to claim 2 is characterized in that: The guide member comprises a slider (21) fixedly mounted on the top of the movable block (14); a rectangular ring (20) is sleeved on the outside of the slider (21); and the rectangular ring (20) is fixedly connected to the top inner wall of the adjustment box (10). The metal welding equipment based on angle change according to claim 2 is characterized in that: The friction unit includes a first friction disc (19) fixedly mounted on an end of a first screw rod (12) close to a rotating shaft (11), the rotating shaft (11) is fixedly connected to a second friction disc (22) located in an adjustment box (10), and the second friction disc (22) and the first friction disc (19) are in contact with each other. The sliding unit includes a first prism (26) fixedly mounted on an end of the rotating shaft (11) away from the first screw rod (12), the second screw rod (24) is provided with a first sliding groove (27) matched with the first prism (26), and the first prism (26) is located in the first sliding groove (27). The metal welding equipment based on angle change according to claim 1 is characterized in that: The elastic support unit includes a slide plate (29) fixedly mounted on the rotating sleeve (4), the movable seat (3) is provided with a second slide groove (30) matched with the slide plate (29), the end of the slide plate (29) away from the rotating sleeve (4) is located in the second slide groove (30), and the inner wall of the slide plate (29) and the second slide groove (30) are connected by a first compression spring (31), the pusher includes a pressing ring (33) sleeved on the outside of the rotating sleeve (4), the pressing ring (33) and the support frame (5) are connected by two first hydraulic telescopic rods (34), the end of the movable seat (3) away from the rotating sleeve (4) is fixedly connected to the support column (32), the inner wall of the pressing ring (33) is provided with an inclined surface matched with the support column (32), and the end of the support column (32) away from the movable seat (3) is in contact with the inclined surface on the pressing ring (33). The metal welding equipment based on angle change according to claim 1 is characterized in that: The driving member comprises a first gear (35) fixedly sleeved on the outside of the rotating sleeve (4); a third motor (36) fixedly connected to the support frame (5); and a second gear (37) meshing with the first gear (35) fixedly connected to the output end of the third motor (36). The metal welding equipment based on angle change according to claim 1 is characterized in that: The horizontal movement mechanism includes a movable column (38) arranged at one end of the pipe positioning column (6) close to the rotating sleeve (4), and the rotating sleeve (4) is sleeved on the outside of the movable column (38), the movable column (38) is provided with a third sliding groove (39), and a second prism (40) is provided in the third sliding groove (39), one end of the second prism (40) is fixedly connected to the pipe positioning column (6), and the other end of the second prism (40) is connected to the inner wall of the third sliding groove (39) through a second compression spring (41), the support frame (5) is fixedly installed with a fixing frame (42), and the end of the movable column (38) away from the pipe positioning column (6) is connected to the fixing frame (42) through a second hydraulic telescopic rod (43). The metal welding equipment based on angle change according to claim 1 is characterized in that: The fixing assembly includes a plurality of clamping plates (44) arranged above the base (1), a plurality of third screw rods (45) are rotatably connected to the side wall of the installation box (9), the outer sleeve of the third screw rod (45) is provided with a threaded sleeve (46), and the end of the threaded sleeve (46) away from the installation box (9) is fixedly connected to the corresponding clamping plate (44), a second guide column (47) is provided above the third screw rod (45), the second guide column (47) is fixedly connected to the installation box (9), the outer sleeve of the second guide column (47) is provided with a guide sleeve (48), and the guide sleeve (48) is fixedly connected to the clamping plate (44), the top of the installation box (9) is fixedly connected to a fourth motor (50), the output end of the fourth motor (50) is fixedly connected to the first bevel gear (49) located in the installation box (9), the end of the third screw rod (45) away from the clamping plate (44) is fixedly connected to the second bevel gear (51) located in the installation box (9), and the second bevel gear (51) and the first bevel gear (49) are meshed. The metal welding equipment based on angle change according to claim 8 is characterized in that: A rectangular hole (53) is provided on the splint (44), and a support block (52) is provided above the guide sleeve (48). The support block (52) passes through the corresponding rectangular hole (53). A fourth screw rod (54) passes through the support block (52), and the fourth screw rod (54) is located on the side of the splint (44) facing the fourth motor (50). Both ends of the fourth screw rod (54) are fixedly connected to the splint (44) through connecting blocks (55). Two nuts (56) are provided on the outside of the fourth screw rod (54), and the two adjacent nuts (56) are respectively located at the top and bottom of the support block (52).

10. A metal welding method based on angle change, using the metal welding device based on angle change according to claim 1, characterized in that: The invention comprises the following steps: step 1: adjusting the horizontal position of the welding gun body (2) by means of the angle-changing translation structure, and adjusting the tilt angle of the welding gun body (2) by means of the angle-changing translation structure, and fixing the annular workpiece on the top of the installation box (9) by means of the fixing assembly; step 2: the staff inserts the end of the pipe into the positioning groove (7), and drives the pipe positioning column (6) and the pipe to move by means of the horizontal movement mechanism, so that the end of the pipe away from the pipe positioning column (6) abuts against the annular workpiece; step 3: pushing the movable seat (3) toward the rotating sleeve (4) by means of the pusher, thereby changing the spacing between the welding gun body (2) and the annular weld; step 4: when the spacing between the welding gun body (2) and the annular weld reaches a preset value, welding is performed by means of the welding gun body (2), and the driving member drives the rotating sleeve (4) and the movable seat (3) to rotate synchronously, so that the welding gun body (2) rotates 360 degrees around the annular weld, thereby completing welding.

Images