Welding device for automobile elbow fitting machining

Abstract

The invention discloses a welding device for automobile bent pipe fitting machining, and relates to the technical field of automobile pipe fitting machining, the welding device comprises a supporting base, a laser welding assembly and a driving mechanism used for driving the laser welding assembly to do circular motion, and a pipe fitting clamping mechanism is arranged on the supporting base; and the pipe fitting clamping mechanism comprises an elastic adaptive clamping mechanism and a straight pipe clamping mechanism. According to the device, firstly, the bent pipe fitting is centrally clamped in the vertical position through the two clamping plates, when the bent pipe fitting is clamped between the two clamping plates, the downward side of the bent pipe fitting directly extrudes the distributed sliding ejector rods, and the sliding ejector rods at different positions abut against the positions, with different curved surfaces, of the bent pipe fitting through resilience force of the corresponding supporting springs conveniently; and the lifting plate drives the other group of distributed sliding ejector rods to downwards press to the upward side of the bent pipe fitting, so that the bent pipe fitting can be conveniently clamped and positioned at positions with different curved surface degrees, the bent pipe fitting can be conveniently and stably butted with a clamped and fixed straight pipe fitting, and the welding operation can be conveniently and effectively completed.

Description

Technical Field

[0001] The invention relates to the technical field of automobile pipe fitting processing, and in particular to a welding device for processing automobile bent pipe fittings. Background Art

[0002] Automobile bent pipe fittings are an important part of automobile manufacturing. They use a specific bending process to process straight pipes into pipe fittings of certain angles and shapes to meet the connection and layout requirements of different automobile systems. For example, there are bent pipe fittings at the exhaust pipe position of the automobile exhaust system; there are bent pipe fittings in some intake manifolds of the intake system, etc., and these bent pipe fittings need to be welded with some straight pipe fittings during the installation process.

[0003] When existing automobile bent pipe accessories are welded and connected with other straight pipe fittings, the straight pipe fittings are generally fixedly clamped on the rotating drive member, and the laser welding head is aimed at the end of the pipe fitting. Due to the particularity of the bent pipe fitting, it is not convenient to clamp it. Therefore, the end of the bent pipe fitting is generally manually connected to the end of the straight pipe fitting, and then spot welding is performed first to make the bent pipe fitting and the straight pipe fitting preliminarily welded together, and then the straight pipe fitting and the bent pipe fitting are driven to rotate by the rotating drive member to complete the subsequent entire circumferential welding.

[0004] The shortcomings of the existing automobile elbow fitting welding equipment are: although the existing automobile elbow fittings can be manually connected to the clamped straight pipe fittings, and initially relatively fixed by spot welding, and then rotated and welded for a circle, the elbow fittings are initially fixed to the ends of the straight pipe fittings only by spot welding, that is, only part of the position is welded and fixed together, and the welding position needs to bear the weight of the entire elbow fitting, which is easy to break, that is, it may detach during the rotation of the straight pipe fitting driven by the straight pipe fitting, and ordinary clamps are difficult to clamp the elbow fittings, especially when almost all positions of the whole are in an arc-shaped bending state, it is difficult for ordinary clamps to effectively and stably clamp the elbow fittings, because the curvature of the elbow fittings at different positions is different, resulting in the clamp being unable to contact and fit most of the positions of the elbow fittings, resulting in insufficient clamping and positioning effect, thereby affecting the subsequent butt welding effect. Summary of the invention

[0005] The purpose of the present invention is to provide a welding device for processing automobile elbow fittings to solve the technical problem in the prior art that automobile elbow fittings are not easy to effectively complete clamping and positioning, resulting in poor welding effect.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] A welding device for processing automobile elbow fittings, comprising a support base, a laser welding assembly and a driving mechanism for driving the laser welding assembly to move in a circular motion, wherein a pipe clamping mechanism is arranged on the support base, and the pipe clamping mechanism comprises:

[0008] An elastic adapting clamping mechanism, wherein the elastic adapting clamping mechanism is arranged on one side of the supporting base, and the elastic adapting clamping mechanism comprises two groups of elastic sliding top pieces, and the two groups of elastic sliding top pieces are used to cooperate and clamp the bent pipe piece;

[0009] A straight tube clamping mechanism is arranged on the other side of the support base, and is used to fix and clamp the straight tube fittings. A port positioning mechanism is provided between the elastic adapter clamping mechanism and the straight tube clamping mechanism, and is used to position the ends of the straight tube fittings and the bent tube fittings in a horizontal position.

[0010] As a further solution of the present invention: the elastic adaptation clamping mechanism also includes a first support plate, a lifting plate and a transverse centering clamping mechanism, the first support plate is fixedly connected to one side of the support base, the lifting plate is arranged parallel to the first support plate, and a main electric telescopic rod is fixedly connected to the first support plate, the telescopic end of the main electric telescopic rod is fixedly connected to the lifting plate, a group of elastic sliding top parts are respectively arranged on the first support plate and the lifting plate, the transverse centering clamping mechanism is arranged on the first support plate, and the transverse centering clamping mechanism is used to clamp the bent pipe member in a vertical position.

[0011] As a further solution of the present invention: the transversely centered clamping mechanism includes a guide column, a clamping plate and a limit spring, two guide columns are provided and fixedly connected to the first support plate, two clamping plates are provided and symmetrically distributed on the first support plate, each of the guide columns passes through the two clamping plates at the same time, and limit springs are symmetrically distributed at both ends of each guide column, and each end of the guide column is connected to the clamping plate through a corresponding limit spring.

[0012] As a further solution of the present invention: each group of the elastic sliding top parts includes a sliding top rod, a supporting spring and a locking mechanism, multiple sliding top rods are slidably arranged on the first support plate and the lifting plate, multiple supporting springs are distributed on the first support plate and the lifting plate, the first support plate and the lifting plate are respectively connected to the corresponding sliding top rods through the corresponding supporting springs, and the locking mechanism is used to fix the position of the sliding top rod.

[0013] As a further solution of the present invention: the locking mechanism includes a secondary electric telescopic rod and a clamping cross plate, and the secondary electric telescopic rod and the clamping cross plate are symmetrically arranged in two and distributed on both sides of the corresponding sliding top rod. The clamping cross plate is fixedly connected to the telescopic end of the secondary electric telescopic rod.

[0014] As a further solution of the present invention: the straight tube clamping mechanism includes a second support plate, a first strip slide groove, a fitting top plate and a clamping mechanism, the second support plate is horizontally fixedly connected to the other side of the support base, the first strip slide groove is horizontally opened on the second support plate, a slide is slidably connected to the first strip slide groove, and a connecting spring is also connected between the slide and the first strip slide groove, the fitting top plate is fixedly connected to the top side of the slide, and the clamping mechanism is arranged on the fitting top plate.

[0015] As a further solution of the present invention: the clamping mechanism includes an auxiliary electric telescopic rod, and the auxiliary electric telescopic rod is provided in plurality and fixedly arranged on the edge of the top plate, and the telescopic end of each auxiliary electric telescopic rod is fixedly connected to the strip top plate.

[0016] As a further solution of the present invention: a first fixed support block is fixedly connected to one side of the first support plate close to the second support plate, a second fixed support block is fixedly connected to one side of the bottom of the fitting top plate, and the first fixed support block and the second fixed support block are horizontally flush.

[0017] As a further solution of the present invention: the port positioning mechanism includes a positioning plate, a linkage sliding mechanism, a guide sleeve, a guide rod and a magnet. The linkage sliding mechanism is cooperatively arranged between the lifting plate and the first support plate. The guide sleeve slides synchronously with the linkage sliding mechanism. The guide rod slides through the guide sleeve, and the positioning plate is fixedly connected to the guide rod. The magnet is fixedly connected to one side of the lifting plate. The positioning plate is an iron block, and the positioning plate matches the position of the magnet.

[0018] As a further solution of the present invention: the linkage sliding mechanism includes a second strip slide groove, an L-shaped slide plate and a linkage push rod, the second strip slide groove is opened on the first support plate, the L-shaped slide plate is slidingly connected to the second strip slide groove, the guide sleeve is fixedly connected to one side of the L-shaped slide plate, one end of the linkage push rod is movably connected to the lifting plate through a rebound hinge, and the other end is aligned and cooperated with the L-shaped slide plate.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention first relies on two clamping plates to clamp the bent pipe fitting in the center in a vertical position. When the bent pipe fitting is clamped between the two clamping plates, the downward side of the bent pipe fitting directly squeezes the distributed sliding push rods. The sliding push rods at different positions are convenient to rely on the rebound force of the corresponding support springs to resist the positions of the bent pipe fitting with different curvatures, and the lifting plate brings another group of distributed sliding push rods to press down to the upward side of the bent pipe fitting, so as to facilitate the clamping and positioning of the positions of the bent pipe fitting with different curvatures, thereby facilitating stable docking with the clamped and fixed straight pipe fitting, and facilitating the effective completion of the welding operation.

[0021] 2. When clamping and positioning the bent pipe and the straight pipe, the present invention first moves the positioning plate to the middle position between the first support plate and the second support plate, so that the ends of the bent pipe and the straight pipe are attached to the side of the positioning plate when they are clamped and positioned, thereby facilitating the positioning of the bent pipe and the straight pipe in a horizontal position, facilitating subsequent docking and welding, and when welding is required after the positioning is completed, the positioning plate is removed. At the moment the positioning plate is removed, the slide in the straight pipe clamping mechanism corresponding to the straight pipe slides along the first strip groove by relying on the rebound force of the connecting spring, driving the straight pipe forward and automatically docking with the end of the bent pipe, facilitating subsequent welding operations.

[0022] 3. After the ends of the bent pipe fitting and the straight pipe fitting of the present invention are positioned and aligned by relying on the positioning plate, the lifting plate is controlled to descend. When the lifting plate descends and drives the distributed sliding push rods to assist in clamping and positioning the bent pipe fitting, the L-shaped slide plate is also pushed to move horizontally through the linkage push rod. The positioning plate is driven by the L-shaped slide plate to separate from between the bent pipe fitting and the straight pipe fitting, and after moving to the corresponding position, it is attracted by the magnetic force of the magnet and collected to one side of the first support plate, so as to avoid affecting the circular motion of the laser welding assembly to complete the welding operation, and no manual storage adjustment is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic structural diagram of a bent pipe member and a straight pipe member in a clamped state when they are butt-jointed together in the present invention;

[0026] Figure 3 It is a schematic structural diagram of the clamping plate and the first supporting plate in the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the sliding push rod and the first support plate in the present invention;

[0028] Figure 5 It is a schematic diagram of the structure when the clamping horizontal plate clamps the end of the sliding push rod in the present invention;

[0029] Figure 6 It is a schematic diagram of the structure when the straight pipe is clamped on the second support plate in the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the positioning plate and the L-shaped sliding plate in the present invention;

[0031] Figure 8 It is a schematic diagram of the structure when the linkage push rod and the L-shaped slide plate are connected with each other in the present invention;

[0032] Fig. 9It is a schematic diagram of the state when the positioning plate in the present invention is between the bent pipe member and the straight pipe member.

[0033] In the figure: 1. support base; 2. hydraulic telescopic member; 3. annular electric guide rail; 4. first support plate; 5. second support plate; 6. lifting plate; 7. bent pipe; 8. straight pipe; 9. laser welding assembly; 10. adjustable electric telescopic rod; 11. clamping plate; 12. strip top plate; 13. auxiliary electric telescopic rod; 14. second fixed support block; 15. first fixed support block; 16. sliding top rod; 17. supporting spring; 18. main electric telescopic rod; 19. guide column; 20. limit spring; 21. clamping cross plate; 22. auxiliary electric telescopic rod; 23. first strip slide; 24. connecting spring; 25. fitting top plate; 26. spherical end body; 27. slide; 28. linkage top rod; 29. ​​L-shaped slide plate; 30. second strip slide; 31. guide sleeve; 32. guide rod; 33. positioning plate; 34. magnet. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the 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 creative work are within the scope of protection of the present invention.

[0035] like Figure 1-Figure 9 As shown, a welding device for processing automobile bent pipe accessories includes a support base 1, a laser welding assembly 9 and a driving mechanism for driving the laser welding assembly 9 to move in a circular motion. The support base 1 is a U-shaped structure. A pipe clamping mechanism is arranged on the support base 1. The pipe clamping mechanism includes an elastic adaptor clamping mechanism and a straight pipe clamping mechanism. The elastic adaptor clamping mechanism is arranged on one side of the support base 1, and the elastic adaptor clamping mechanism includes two groups of elastic sliding top members. The two groups of elastic sliding top members are used to cooperate in clamping the bent pipe 7. The straight pipe clamping mechanism is arranged on the other side of the support base 1. The straight pipe clamping mechanism is used to fix and clamp the straight pipe 8. After the straight pipe 8 and the end of the bent pipe 7 are butt-jointed, the welding is completed by the circular motion of the laser welding assembly 9; a port positioning mechanism is arranged between the elastic adaptor clamping mechanism and the straight pipe clamping mechanism. The port positioning mechanism is used to position the ends of the straight pipe 8 and the bent pipe 7 in a horizontal position to facilitate butt welding.

[0036] In some specific embodiments, in combination Figure 1 and Figure 3As shown, the elastically adaptable clamping mechanism also includes a first support plate 4, a lifting plate 6 and a transversely centered clamping mechanism. The first support plate 4 is fixedly connected to one side of the support base 1, and the lifting plate 6 is arranged parallel to the first support plate 4. A main electric telescopic rod 18 is fixedly connected to the first support plate 4 through a bracket. The telescopic end of the main electric telescopic rod 18 is vertically downward and fixedly connected to the lifting plate 6. A group of elastic sliding top parts are respectively arranged on the first support plate 4 and the lifting plate 6. The transversely centered clamping mechanism is arranged on the first support plate 4. The transversely centered clamping mechanism is used to center the bent pipe member 7 in a vertical position.

[0037] Among them, the transverse centering clamping mechanism includes a guide column 19, a clamping plate 11 and a limit spring 20. There are two guide columns 19, which are horizontally fixedly connected to the first support plate 4. It should be noted that both ends of the guide column 19 are fixedly connected to the first support plate 4 through a protrusion, which can ensure that there is a certain distance between the end surface of the guide column 19 and the first support plate 4. There are two clamping plates 11, which are symmetrically distributed on the first support plate 4. Each guide column 19 passes through two clamping plates 11 at the same time, and the clamping plates 11 can be relatively close to the guide columns 19. Sliding, limit springs 20 are symmetrically distributed at both ends of each guide column 19, and each end of the guide column 19 is connected to the clamping plate 11 through the corresponding limit spring 20. When the bent pipe part 7 is clamped and fixed, the bent pipe part 7 is vertically clamped between the two clamping plates 11. During this process, the two clamping plates 11 slide relative to the guide column 19 and separate from each other, so that the corresponding limit spring 20 is compressed to generate a rebound force, so that the two clamping plates 11 can conveniently clamp the bent pipe part 7 in the center in a vertical position.

[0038] In some specific embodiments, reference Figure 2 and Figure 4 As shown, two groups of elastic sliding top members are symmetrically distributed up and down, and each group of elastic sliding top members includes a sliding top rod 16, a support spring 17 and a locking mechanism. Multiple sliding top rods 16 are slidably arranged on the first support plate 4 and the lifting plate 6, and multiple sliding top rods 16 are distributed equidistantly in the horizontal direction, and the ends of each sliding top rod 16 are spherical end bodies 26, which facilitate the end of the sliding top rod 16 to fit the curved outer wall of the curved pipe member 7. Multiple support springs 17 are distributed on the first support plate 4 and the lifting plate 6, and the first support plate 4 and the lifting plate 6 are respectively connected to the corresponding sliding top rod 16 through the corresponding support springs 17, and the support springs 17 are compressible. It should be noted that the sliding top rod 16 corresponding to the first support plate 4 is between the two clamping plates 11, and the sliding top rod 16 corresponding to the lifting plate 6 is aligned above the sliding top rod 16 corresponding to the first support plate 4, and the locking mechanism is used to fix the position of the sliding top rod 16.

[0039] Among them, Figure 5As shown, the locking mechanism includes a secondary electric telescopic rod 22 and a clamping cross plate 21. Two of the secondary electric telescopic rod 22 and the clamping cross plate 21 are symmetrically arranged and distributed on both sides of the corresponding sliding top rod 16. The clamping cross plate 21 is fixedly connected to the telescopic end of the secondary electric telescopic rod 22. It should be noted that the secondary electric telescopic rod 22 in the locking mechanism corresponding to the first support plate 4 is fixed on the lower surface of the first support plate 4, and the secondary electric telescopic rod 22 in the locking mechanism corresponding to the lifting plate 6 is fixed on the upper surface of the lifting plate 6.

[0040] When the bent pipe member 7 is stuck between the two clamping plates 11, the downward side thereof is pressed downward to contact the sliding push rod 16 distributed on the first support plate 4, and the corresponding sliding push rod 16 slides relative to the first support plate 4 due to the pressing effect, and the corresponding supporting spring 17 is compressed. At this time, the sliding push rods 16 at different positions can rely on the corresponding supporting spring 17 rebound force to contact the side wall of the bent pipe member 7 at the corresponding position on the downward side, so as to facilitate contact with the side wall of the bent pipe member 7 at different bending degrees, and then rely on the corresponding auxiliary electric telescopic rod 22 to extend, so that the clamping cross plates 21 distributed in pairs will fix and clamp the ends of all the sliding push rods 16 that pass through the bottom of the first support plate 4, Thereby, the sliding push rod 16 stably supports the bottom side of the bent pipe member 7; then the main electric telescopic rod 18 is controlled to extend, driving the lifting plate 6 to descend, and the lifting plate 6 drives the correspondingly distributed sliding push rod 16 to descend and contact the upward side of the bent pipe member 7. The sliding push rod 16 at this position can also rely on the rebound force of the corresponding support spring 17 to contact the side wall of the upward side of the bent pipe member 7, and then the sliding push rod 16 at this position is fixedly clamped by the corresponding auxiliary electric telescopic rod 22 and the clamping cross plate 21, so that the bent pipe member 7 is effectively fixed and clamped by the two sets of sliding push rods 16 on the upper and lower sides, so as to ensure that the position of the bent pipe member 7 relative to the straight pipe member 8 is stable during the welding process.

[0041] In some specific embodiments, in combination Figure 2 and Figure 6 As shown, the straight tube clamping mechanism includes a second support plate 5, a first strip slide groove 23, a fitting top plate 25 and a clamping mechanism. The second support plate 5 is horizontally fixedly connected to the other side of the support base 1. The first strip slide groove 23 is horizontally opened on the second support plate 5. A slide 27 is slidably connected to the first strip slide groove 23, and a connecting spring 24 is also connected between the slide 27 and the first strip slide groove 23. The connecting spring 24 is stretchable. The fitting top plate 25 is fixedly connected to the top side of the slide 27. The fitting top plate 25 is used to fit the port position of the straight tube 8. The clamping mechanism is arranged on the fitting top plate 25 to fix and clamp the straight tube 8.

[0042] Among them, the clamping mechanism includes an auxiliary electric telescopic rod 13, a plurality of auxiliary electric telescopic rods 13 are provided, and are fixedly set on the edge of the fitting top plate 25, the telescopic end of each auxiliary electric telescopic rod 13 points to the middle position, and the telescopic end of each auxiliary electric telescopic rod 13 is fixedly connected to the strip top plate 12. When the straight pipe 8 needs to be fixed, all the auxiliary electric telescopic rods 13 are controlled to extend, so that the straight pipe 8 is fixedly clamped by relying on the strip top plate 12.

[0043] In some other specific embodiments, a first fixed support block 15 is fixedly connected to one side of the first support plate 4 close to the second support plate 5, and a second fixed support block 14 is fixedly connected to one side of the bottom of the fitted top plate 25. When an auxiliary electric telescopic rod 13 is needed, only one can be distributed on the upper side and the front and rear sides of the fitted top plate 25, and no distribution is required on the bottom. The first fixed support block 15 and the second fixed support block 14 are horizontally flush. When the bent pipe fitting 7 is clamped, the end of the bent pipe fitting 7 to be welded is lowered and abutted against the first fixed support block 15, and the straight pipe fitting 8 is first horizontally mounted on the second fixed support block 14, and then the strip top plate 12 is driven by the auxiliary electric telescopic rod 13 to limit and fix the straight pipe fitting 8, so that the ports of the bent pipe fitting 7 and the straight pipe fitting 8 are conveniently aligned.

[0044] In some specific embodiments, in combination Figures 7 to 9 As shown, the port positioning mechanism includes a positioning plate 33, a linkage sliding mechanism, a guide sleeve 31, a guide rod 32 and a magnet 34. The linkage sliding mechanism is cooperatively arranged between the lifting plate 6 and the first supporting plate 4. The guide sleeve 31 slides synchronously with the linkage sliding mechanism. The guide rod 32 slides through the guide sleeve 31, and the positioning plate 33 is fixedly connected to the guide rod 32. After the straight pipe 8 and the bent pipe 7 are clamped and fixed, the ports to be welded of the straight pipe 8 and the bent pipe 7 are respectively attached to the two sides of the positioning plate 33, that is, the positioning plate 33 is used to position the ports to be welded of the bent pipe 7 on the vertical plane, so that it is convenient to dock with the end of the straight pipe 8; the magnet 34 is fixedly connected to the lifting plate 6 through a bracket. On one side, the positioning plate 33 is an iron block, and the positioning plate 33 matches the position of the magnet 34. After the ends of the straight pipe 8 and the bent pipe 7 are positioned by the positioning plate 33, the lifting plate 6 is controlled to descend, and the lifting plate 6 causes the linkage sliding mechanism to slide, and the linkage sliding mechanism drives the positioning plate 33 to separate from between the straight pipe 8 and the bent pipe 7, and the magnet 34 descends with the lifting plate 6. Finally, the magnet 34 is aligned with the positioning plate 33, and the magnet 34 relies on magnetic force to attract the positioning plate 33. The positioning plate 33 relies on the guide rod 32 to slide relative to the guide sleeve 31, so as to be stored on one side of the first support plate 4, so as to avoid interfering with the circular motion of the laser welding component 9 to perform welding operations.

[0045] It should be noted that a pressure sensing switch electrically connected to the auxiliary electric telescopic rod 22 is provided on one side of the positioning plate 33 close to the magnet 34. When the magnet 34 and the positioning plate 33 are adsorbed together, the pressure sensing switch generates an induction, causing each auxiliary electric telescopic rod 22 to extend, thereby facilitating the fixing and clamping of the sliding top rod 16 by means of the clamping cross plate 21.

[0046] In some specific embodiments, the linkage sliding mechanism includes a second strip slide groove 30, an L-shaped slide plate 29 and a linkage push rod 28. The second strip slide groove 30 is opened on the first support plate 4. The L-shaped slide plate 29 is slidingly connected to the second strip slide groove 30. The guide sleeve 31 is fixedly connected to one side of the L-shaped slide plate 29. One end of the linkage push rod 28 is movably connected to the lifting plate 6 through a rebound hinge, and the other end is aligned with the L-shaped slide plate 29, and the linkage push rod 28 is in an inclined position. The end of the linkage push rod 28 that is aligned with the L-shaped slide plate 28 is provided with a sphere or a rotating wheel. After it contacts the inner corner position of the L-shaped slide plate 29, the end of the linkage push rod 28 can be deflected relative to the L-shaped slide plate 29, thereby facilitating the pushing of the L-shaped slide plate 29.

[0047] When the positioning plate 33 is between the bent pipe 7 and the straight pipe 8, the L-shaped slide plate 29 is aligned under the end of the linkage push rod 28. At this time, the lifting plate 6 descends, and the lifting plate 6 drives the linkage push rod 28 to descend. The end of the linkage push rod 28 will descend and hit the inner corner of the L-shaped slide plate 29. Then, due to the extrusion effect, the linkage push rod 28 is deflected as a whole relative to the lifting plate 6, and the L-shaped slide plate 29 is pushed to slide along the second strip slide groove 30, thereby driving the positioning plate 33 to separate from between the bent pipe 7 and the straight pipe 8.

[0048] In some specific embodiments, the driving mechanism includes an annular electric guide rail 3, which is arranged between a first support plate 4 and a second support plate 5. A laser welding assembly 9 is slidably arranged on the annular electric guide rail 3. The laser welding assembly 9 moves along the inner circle of the annular electric guide rail 3 to facilitate circular motion, and welds a circle around the ends of the bent pipe 7 and the straight pipe 8 that are connected together.

[0049] It should be noted that a hydraulic telescopic member 2 is arranged between the bottom of the annular electric guide rail 3 and the supporting base 1, and the hydraulic telescopic member 2 is slidably connected to the supporting base 1. The hydraulic telescopic member 2 is used to adjust the height of the annular electric guide rail 3, and can also slide horizontally to adjust the position. The inner ring of the annular electric guide rail 3 is slidably provided with an adjustable electric telescopic rod 10, and the laser welding assembly 9 is fixedly installed on the telescopic end of the adjustable electric telescopic rod 10, and the telescopic end of the adjustable electric telescopic rod 10 points to the center position of the annular electric guide rail 3; the hydraulic telescopic member 2 can be controlled to telescopically adjust the height of the center position of the annular electric guide rail 3 according to the position of the docking ends of the clamped bent pipe 7 and the straight pipe 8, so as to facilitate flushing with the center of the pipe, and then the distance between the laser welding assembly 9 and the pipe is adjusted by adjusting the electric telescopic rod 10 to facilitate welding.

[0050] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0051] First, ensure that the positioning plate 33 slides out completely by relying on the guide rod 32. The guide rod 32 has a stopper at the end to facilitate the positioning plate 33 to slide to a certain position and be between the first support plate 4 and the second support plate 5. Then, the bent pipe member 7 is vertically clamped between the two clamping plates 11. During this process, the two clamping plates 11 slide relative to the guide column 19 and separate from each other, so that the corresponding limit spring 20 is compressed to generate a rebound force. In this way, the two clamping plates 11 can conveniently clamp the bent pipe member 7 in the center in a vertical position, and make the end of the bent pipe member 7 to be welded fit against the positioning plate 33, so as to facilitate the positioning of the end of the bent pipe member 7 in a horizontal position.

[0052] When the bent pipe member 7 is clamped between the two clamping plates 11, the downward side of the bent pipe member 7 is pressed downward to contact the sliding push rod 16 distributed on the first support plate 4, and the corresponding sliding push rod 16 slides relative to the first support plate 4 due to the pressing effect, and the corresponding support spring 17 is compressed. At this time, the sliding push rods 16 at different positions can rely on the corresponding support spring 17 rebound force to contact the side wall of the bent pipe member 7 at the corresponding position on the downward side, so as to facilitate contact with the side wall of the bent pipe member 7 at different bending degrees, and until the end of the bent pipe member 7 contacts the first fixed bracket 15 while being in contact with one side of the positioning plate 33, the downward pressure on the bent pipe member 7 is stopped;

[0053] Then, one end of the straight pipe 8 is made to fit against the fitting top plate 25 and is placed on the second fixed bracket 14, and the other end is made to fit against the other side of the positioning plate 33, so as to make the end of the straight pipe 8 to be welded be positioned in a vertical position, so as to be aligned with the end of the bent pipe 7, and control all the auxiliary electric telescopic rods 13 to extend, so as to fix and clamp the straight pipe 8 by relying on the strip top plate 12, and in this process, the slide 27 slides along the first strip slide groove 23 and moves away from the first bracket 4, causing the connecting spring 24 to stretch and generate a rebound force.

[0054] It should be noted that when the bent pipe 7 and the straight pipe 8 are welded, their sizes are matched, and they are respectively mounted on the flush first fixed bracket 15 and the second fixed bracket 14, and clamped in the center. Therefore, it is only necessary to rely on the positioning plate 33 to position the ends in a vertical position, and alignment can be easily achieved.

[0055] Finally, the main electric telescopic rod 18 is controlled to extend, driving the lifting plate 6 to descend, and the lifting plate 6 drives the corresponding sliding push rod 16 to descend and contact the upper side of the curved pipe 7. The sliding push rod 16 at this position can also rely on the rebound force of the corresponding support spring 17 to contact the side wall of the curved pipe 7 facing upward;

[0056] When the lifting plate 6 descends, the lifting plate 6 drives the linkage push rod 28 to descend, and the end of the linkage push rod 28 descends to contact the L-shaped slide plate 29. Then, due to the squeezing effect, the linkage push rod 28 deflects relative to the lifting plate 6, thereby pushing the L-shaped slide plate 29 to slide along the second strip slide groove 30, thereby driving the positioning plate 33 to separate from between the curved pipe member 7 and the straight pipe member 8. After separation, the slide 27 slides along the first strip slide groove 23 by relying on the rebound force of the connecting spring 24, thereby driving the straight pipe member 8 to dock with the end of the curved pipe member 7.

[0057] In addition, during the descending process of the lifting plate 6, the magnet 34 descends with the lifting plate 6, and finally the magnet 34 is aligned with the positioning plate 33, and the magnet 34 attracts the positioning plate 33 by magnetic force, and the positioning plate 33 slides relative to the guide sleeve 31 by the guide rod 32, and is stored on one side of the first support plate 4, so as to avoid interfering with the laser welding assembly 9 in circular motion to perform welding operations;

[0058] Then the laser welding assembly 9 relies on the annular electric guide rail 3 to surround the ends of the straight pipe 8 and the bent pipe 7 that are connected together to perform welding operations and complete the welding.

[0059] Several embodiments of the present invention are described in detail above, but the embodiments of the present invention are not limited thereto and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A welding device for processing automobile elbow fittings, comprising a support base (1), a laser welding assembly (9) and a driving mechanism for driving the laser welding assembly (9) to move in a circular motion, wherein a pipe clamping mechanism is arranged on the support base (1), characterized in that: The pipe clamping mechanism comprises: An elastic adaptable clamping mechanism, the elastic adaptable clamping mechanism being arranged on one side of the support base (1), and the elastic adaptable clamping mechanism comprising two groups of elastic sliding top members, the two groups of elastic sliding top members being used to cooperate and clamp the bent pipe member (7); A straight tube clamping mechanism, the straight tube clamping mechanism being arranged on the other side of the support base (1), the straight tube clamping mechanism being used to fix and clamp the straight tube member (8), a port positioning mechanism being arranged between the elastic adapting clamping mechanism and the straight tube clamping mechanism, the port positioning mechanism being used to position the ends of the straight tube member (8) and the bent tube member (7) in a horizontal position.

2. A welding device for processing automobile elbow fittings according to claim 1, characterized in that: The elastically adaptable clamping mechanism further comprises a first support plate (4), a lifting plate (6) and a transversely centered clamping mechanism, wherein the first support plate (4) is fixedly connected to one side of the support base (1), the lifting plate (6) is arranged parallel to the first support plate (4), and a main electric telescopic rod (18) is fixedly connected to the first support plate (4), and the telescopic end of the main electric telescopic rod (18) is fixedly connected to the lifting plate (6), and a group of elastic sliding top members are respectively arranged on the first support plate (4) and the lifting plate (6), and the transversely centered clamping mechanism is arranged on the first support plate (4), and the transversely centered clamping mechanism is used to clamp the bent pipe member (7) in a vertical position.

3. A welding device for processing automobile elbow fittings according to claim 2, characterized in that: The transversely centered clamping mechanism comprises a guide column (19), a clamping plate (11) and a limit spring (20). Two guide columns (19) are provided and fixedly connected to the first support plate (4). Two clamping plates (11) are provided and symmetrically distributed on the first support plate (4). Each guide column (19) passes through the two clamping plates (11) at the same time. The limit springs (20) are symmetrically distributed at both ends of each guide column (19), and each end of the guide column (19) is connected to the clamping plate (11) through a corresponding limit spring (20).

4. A welding device for processing automobile elbow fittings according to claim 2, characterized in that: Each group of the elastic sliding top members comprises a sliding top rod (16), a supporting spring (17) and a locking mechanism; a plurality of sliding top rods (16) are slidably arranged on the first support plate (4) and the lifting plate (6); a plurality of supporting springs (17) are distributed on the first support plate (4) and the lifting plate (6); the first support plate (4) and the lifting plate (6) are respectively connected to the corresponding sliding top rods (16) through the corresponding supporting springs (17); and the locking mechanism is used to fix the position of the sliding top rods (16).

5. A welding device for processing automobile elbow fittings according to claim 4, characterized in that: The locking mechanism comprises a secondary electric telescopic rod (22) and a clamping transverse plate (21), wherein two of the secondary electric telescopic rod (22) and the clamping transverse plate (21) are symmetrically arranged and distributed on both sides of the corresponding sliding top rod (16), and the clamping transverse plate (21) is fixedly connected to the telescopic end of the secondary electric telescopic rod (22).

6. A welding device for processing automobile elbow fittings according to claim 2, characterized in that: The straight tube clamping mechanism comprises a second support plate (5), a first strip-shaped slide groove (23), a fitting top plate (25) and a clamping mechanism, wherein the second support plate (5) is horizontally fixedly connected to the other side of the support base (1), the first strip-shaped slide groove (23) is transversely opened on the second support plate (5), a slide frame (27) is slidably connected to the first strip-shaped slide groove (23), and a connecting spring (24) is also connected between the slide frame (27) and the first strip-shaped slide groove (23), the fitting top plate (25) is fixedly connected to the top side of the slide frame (27), and the clamping mechanism is arranged on the fitting top plate (25).

7. A welding device for processing automobile elbow fittings according to claim 6, characterized in that: The clamping mechanism comprises an auxiliary electric telescopic rod (13), a plurality of the auxiliary electric telescopic rods (13) are provided and fixedly arranged on the edge of the fitting top plate (25), and the telescopic end of each auxiliary electric telescopic rod (13) is fixedly connected to the strip-shaped top plate (12).

8. A welding device for processing automobile elbow fittings according to claim 6, characterized in that: A first fixed support block (15) is fixedly connected to one side of the first support plate (4) close to the second support plate (5), and a second fixed support block (14) is fixedly connected to one side of the bottom of the fitting top plate (25), and the first fixed support block (15) and the second fixed support block (14) are laterally flush.

9. A welding device for processing automobile elbow fittings according to claim 2, characterized in that: The port positioning mechanism comprises a positioning plate (33), a linkage sliding mechanism, a guide sleeve (31), a guide rod (32) and a magnet (34); the linkage sliding mechanism is cooperatively arranged between the lifting plate (6) and the first supporting plate (4); the guide sleeve (31) and the linkage sliding mechanism slide synchronously; the guide rod (32) slides through the guide sleeve (31); the positioning plate (33) is fixedly connected to the guide rod (32); the magnet (34) is fixedly connected to one side of the lifting plate (6); the positioning plate (33) is an iron block; and the positioning plate (33) and the magnet (34) are matched in position.

10. A welding device for processing automobile elbow fittings according to claim 9, characterized in that: The linkage sliding mechanism comprises a second strip slide groove (30), an L-shaped slide plate (29) and a linkage push rod (28); the second strip slide groove (30) is arranged on the first support plate (4); the L-shaped slide plate (29) is slidably connected to the second strip slide groove (30); the guide sleeve (31) is fixedly connected to one side of the L-shaped slide plate (29); one end of the linkage push rod (28) is movably connected to the lifting plate (6) through a rebound hinge, and the other end is aligned and matched with the L-shaped slide plate (29).

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