An automated welding device for profile production

Abstract

The present invention relates to the technical field of welding equipment, and particularly relates to an automatic welding equipment for profile production, which includes a support component. At both ends of the support component, a guiding component is fixedly installed. At the inner bottom end of the support component close to the guiding component, profiles are placed. The guiding component includes an alignment device and a collection device. The alignment device includes a first rack, a special-shaped bracket, and a front end plate. The first rack is fixedly installed at one end of the special-shaped bracket, and the special-shaped bracket is fixedly installed on the side end of the front end plate. On the side end of the front end plate facing away from the first rack, a guide rod is fixedly installed. An outer ring at the top end of the guide rod away from the front end plate is slidably sleeved with a displacement plate. A first spring is fixedly installed between the displacement plate and the front end plate. A pushing plate is fixedly installed at the top end of the displacement plate. The collection device includes a lead screw, a driving motor, and a centralized cavity. Through the setting of the guiding component and the support component, the purpose of alignment adaptation and automatic welding of the profile welding equipment is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to an automatic welding equipment for profile production. Background Art

[0002] Profiles refer to solid straight bars of metal that have been formed through plastic processing and have a certain cross-sectional shape and size. Profiles have a wide variety of specifications and uses, and they play a very important role in rolling production.

[0003] Profile welding equipment is used to weld various profiles (such as square tubes, round tubes, aluminum profiles, etc.). The working principle of profile welding equipment is mainly based on the heating effect of welding heat source. During welding, the heat source heats the material in the welding area to a molten state, and then through the filling material (such as welding rod, welding wire, etc.) or without the filling material, two or more metal parts are fused with each other in a molten state to form a solid weld.

[0004] At present, when the profile welding equipment on the market is in use, it needs to rely on external equipment and workers to load the materials, so the profiles need equipment assistance when they are docked and adapted. Therefore, the existing profiles often need to go through multiple steps to be spliced ​​and welded, which makes the existing profile welding equipment unable to perform profile alignment and automatic welding. Therefore, a device is needed to improve the above problem. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides an automated welding device for profile production.

[0006] The technical solution adopted by the present invention to solve its technical problems is: an automated welding equipment for profile production, comprising a supporting component, guide components are fixedly installed at both ends of the supporting component, and a profile is placed on the supporting component near the inner bottom end of the guide component, the guide component comprises an alignment device and a collecting device, the alignment device comprises a first rack, a special-shaped bracket and a front end plate, the first rack is fixedly installed at one end of the special-shaped bracket, the special-shaped bracket is fixedly installed on the side end of the front end plate, a guide rod is fixedly installed at the side end of the front end plate away from the first rack, a displacement plate is slidably sleeved on the top outer ring of the guide rod away from the front end plate, a first spring is fixedly installed between the displacement plate and the front end plate, and a pushing plate is fixedly installed on the top end of the displacement plate, the collecting device comprises a screw rod, a driving motor and a central cavity, the driving motor is fixedly installed at one end of the bottom of the central cavity, and the screw rod is fixedly installed at the side end center of the driving motor.

[0007] Specifically, the support member includes a contact device, a reset device, side frames, and a support base plate. The contact device is symmetrically and slidably inserted into the top and bottom interiors of the reset device. The side frames are fixedly installed on both sides of the reset device. The support base plates are symmetrically and fixedly installed at one end of the side frames away from the contact device.

[0008] Specifically, the contact device includes an extension bracket, sliding keys, a support disk, a rotating shaft, and a welding torch. The sliding keys are fixedly installed at both ends of the top of the support disk. The extension brackets are symmetrically and fixedly installed at the top of the support disk, and the extension brackets are located between the two sliding keys. The rotating shaft is rotatably installed inside the front end of the extension bracket. The welding torch is fixedly installed between the two rotating shafts. A first gear is fixedly installed at the side end of the rotating shaft away from the welding torch. A front baffle is fixedly installed at the bottom of the front end of the extension bracket. Two vertical rods are slidably inserted into the rotating shaft. A mating key is fixedly installed at the bottom end of the vertical rod. Two second springs are fixedly installed between the mating key and the rotating shaft, and the second springs are located on the outer circle of the vertical rod. A magnetic attraction plate is fixedly installed at the side end of the rotating shaft close to the front baffle. A special-shaped air cylinder is fixedly installed at the side end of the magnetic attraction plate close to the vertical rod. A second piston rod is slidably inserted into the end of the special-shaped air cylinder away from the vertical rod. A third spring is fixedly installed between the second piston rod and the special-shaped air cylinder. A first piston rod is slidably inserted into the end of the special-shaped air cylinder close to the vertical rod. A positioning baffle is fixedly installed at the end of the first piston rod close to the first gear.

[0009] When the support disk moves, it can drive the first gear to pass over the top of the second rack, so that the welding torch can drive the mating key to rotate and be obliquely aligned with the positioning baffle.

[0010] Specifically, the reset device includes a support rear plate, front end brackets, and fourth springs. The front end brackets are symmetrically and fixedly installed at the top and bottom of the side end of the support rear plate. The fourth springs are fixedly installed at the top and bottom of the side end of the support rear plate close to the front end brackets, and the fourth springs are located at the inner center of the front end brackets. A connecting plate is fixedly installed at the end of the fourth spring away from the support rear plate. A positioning plate is fixedly installed at the end of the front end bracket close to the connecting plate. Second racks are symmetrically and fixedly installed at the top of the front end bracket away from the support rear plate. A second gear is rotatably installed at the center of the top of the front end bracket close to the second rack. A winding wheel is fixedly installed at the center of the top of the second gear. A connecting rope is fixedly installed between the connecting plate and the winding wheel.

[0011] When the second gear rotates, it can pull and move the connecting plate through the connecting rope, so that the connecting plate can drive the entire contact device to move.

[0012] Specifically, the displacement plate is slidably inserted into the bottom end of the central cavity, the front end plate is threadedly sleeved on the screw rod, the central cavity is fixedly mounted on one end of the side frame close to the supporting bottom plate, the sliding key is slidably inserted into the front end bracket, and the support plate is fixedly mounted on the side end of the connecting plate away from the fourth spring.

[0013] Specifically, the tooth distribution angle of the first gear is 30°, and the first gear is vertically aligned with the second rack, and a movable groove is opened at the center of the bottom end of the concentrated cavity.

[0014] Specifically, through holes are provided at the bottoms of both ends of the concentrated cavity, and the thickness of the pushing plate is the same as the height of the through holes. A groove is provided inside the top end of the positioning baffle away from the third spring.

[0015] Specifically, the bottom of the side end of the mating key is inclined at 45° away from the magnetic attraction plate, the interior of the special-shaped gas cylinder is hollow, and a closed cavity is formed between the first piston rod, the special-shaped gas cylinder and the second piston rod.

[0016] Specifically, circular gaskets are fixedly installed on one end of the special-shaped air cylinder close to the second piston rod and the other end of the second piston rod away from the special-shaped air cylinder, and the third spring is fixedly installed between the two circular gaskets, the alignment plate is horizontally aligned with the second piston rod, a slot is provided on the opposite inner side of the front end bracket, and the sliding key is slidably inserted into the inside of the slot.

[0017] Specifically, the supporting base plate further comprises a hydraulic cylinder and a blocking plate, wherein the hydraulic cylinder is fixedly mounted on the bottom end of the supporting base plate, and the blocking plate is fixedly mounted on the side end of the hydraulic cylinder.

[0018] Beneficial effects of the present invention:

[0019] First, when the driving motor of the present invention is started, it can drive the screw to rotate, so that the front end plate can drive the pushing plate to move inside the concentrated cavity, so that the pushing plate can push the profile to the outside of the concentrated cavity until it is completely fitted. At the same time, when the front end plate continues to move, it can drive the first rack to pass through the second gear, so that the second gear can drive the connecting plate to move, and when the screw rotates in the opposite direction, it can drive the pushing plate to move to the rear end, so that it is convenient to push the profile inside the concentrated cavity again.

[0020] Second, when the second gear rotates in the present invention, the connecting rope can be used to pull the connecting plate, driving the welding torch to move towards one end close to the profile, so that the welding torch can perform welding work on the surface of the profile. At the same time, when the welding torch moves to the frontmost end, the welding torch can rotate to a specified angle, thereby avoiding the welding torch from contacting the surface of the profile again when it resets. Moreover, when the welding torch is fully reset, the welding torch can rotate to a vertical state again, facilitating the welding torch to weld the profile again and completing the automated welding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the drawings and embodiments.

[0022] Figure 1 It is a front perspective three-dimensional structure schematic diagram of the main body in the present invention;

[0023] Figure 2 It is a front perspective three-dimensional structure schematic diagram of the guiding component in the present invention;

[0024] Figure 3 It is a front perspective three-dimensional structure schematic diagram of the alignment device in the present invention;

[0025] Figure 4 It is a partial sectional view of the collection device in the present invention;

[0026] Figure 5 It is a front perspective three-dimensional structure schematic diagram of the supporting component in the present invention;

[0027] Figure 6 It is a partial sectional view of the contact device in the present invention;

[0028] Figure 7 It is a rear perspective three-dimensional structure schematic diagram of the contact device in the present invention;

[0029] Figure 8 In the present invention Figure 7 Local enlarged schematic diagram at position A;

[0030] Figure 9 It is a front perspective three-dimensional structure schematic diagram of the reset device in the present invention;

[0031] Figure 10 It is a front perspective three-dimensional structure schematic diagram of the second embodiment of the supporting base plate in the present invention.

[0032] In the figure: 1 - guiding component, 2 - supporting component, 3 - profile, 4 - alignment device, 5 - collecting device, 6 - first rack, 7 - special-shaped bracket, 8 - first spring, 9 - pushing plate, 10 - guide rod, 11 - displacement plate, 12 - front end plate, 13 - lead screw, 14 - driving motor, 15 - centralized cavity, 16 - contact device, 17 - reset device, 18 - side frame, 19 - supporting bottom plate, 20 - front baffle, 21 - welding torch, 22 - first gear, 23 - supporting disc, 24 - sliding key, 25 - extending bracket, 26 - rotating shaft, 27 - vertical rod, 28 - second spring, 29 - mating key, 30 - positioning baffle, 31 - first piston rod, 32 - special-shaped air cylinder, 33 - second piston rod, 34 - third spring, 35 - magnetic attracting plate, 36 - connecting rope, 37 - winding wheel, 38 - second gear, 39 - second rack, 40 - alignment plate, 41 - supporting rear plate, 42 - fourth spring, 43 - front end bracket, 44 - connecting plate, 45 - hydraulic cylinder, 46 - blocking plate. Detailed implementation manner

[0033] In order to enable those skilled in the art of the present technology to better understand the solution of this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] Embodiment 1

[0036] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, an automatic welding device for profile production according to the present invention includes a support member 2. Guide members 1 are fixedly installed at both ends of the support member 2. A profile 3 is placed at the inner bottom end of the support member 2 close to the guide member 1. The guide member 1 includes an alignment device 4 and a collection device 5. The alignment device 4 includes a first rack 6, a special-shaped bracket 7, and a front end plate 12. The first rack 6 is fixedly installed at one end of the special-shaped bracket 7. The special-shaped bracket 7 is fixedly installed on the side end of the front end plate 12. A guide rod 10 is fixedly installed on the side end of the front end plate 12 facing away from the first rack 6. A displacement plate 11 is slidably sleeved on the outer ring of the top end of the guide rod 10 away from the front end plate 12. A first spring 8 is fixedly installed between the displacement plate 11 and the front end plate 12. A push plate 9 is fixedly installed at the top end of the displacement plate 11. The collection device 5 includes a lead screw 13, a drive motor 14, and a centralized cavity 15. The drive motor 14 is fixedly installed at one end of the bottom of the centralized cavity 15. The lead screw 13 is fixedly installed at the center of the side end of the drive motor 14.

[0037] As Figure 5 , the support member 2 includes a contact device 16, a reset device 17, side frames 18, and a support bottom plate 19. The contact device 16 is symmetrically slidably inserted into the top and bottom interiors of the reset device 17. The side frames 18 are fixedly installed on both sides of the reset device 17. The support bottom plates 19 are symmetrically fixedly installed at the ends of the side frames 18 away from the contact device 16, and can support the profile 3 for placement and docking.

[0038] As Figure 6 、 Figure 7 and Figure 8, the contact device 16 includes an extension bracket 25, a sliding key 24, a support disk 23, a rotating shaft 26, and a welding torch 21. The sliding key 24 is fixedly installed at both ends of the top of the support disk 23. The extension brackets 25 are symmetrically and fixedly installed at the top of the support disk 23, and the extension brackets 25 are located between the two sliding keys 24. The rotating shaft 26 is rotatably installed inside the front end of the extension bracket 25. The welding torch 21 is fixedly installed between the two rotating shafts 26. A first gear 22 is fixedly installed at the side end of the rotating shaft 26 away from the welding torch 21. A front baffle 20 is fixedly installed at the bottom of the front end of the extension bracket 25. Two vertical rods 27 are slidably inserted inside the rotating shaft 26. A mating key 29 is fixedly installed at the bottom end of the vertical rod 27. Two second springs 28 are fixedly installed between the mating key 29 and the rotating shaft 26, and the second springs 28 are located on the outer circle of the vertical rod 27. A magnetic attraction plate 35 is fixedly installed at the side end of the rotating shaft 26 close to the front baffle 20. A special-shaped air cylinder 32 is fixedly installed at the side end of the magnetic attraction plate 35 close to the vertical rod 27. A second piston rod 33 is slidably inserted inside the end of the special-shaped air cylinder 32 away from the vertical rod 27. A third spring 34 is fixedly installed between the second piston rod 33 and the special-shaped air cylinder 32. A first piston rod 31 is slidably inserted inside the end of the special-shaped air cylinder 32 close to the vertical rod 27. A positioning baffle 30 is fixedly installed at the end of the first piston rod 31 close to the first gear 22. A square hole is formed inside the end of the positioning baffle 30 away from the extension bracket 25, and the square hole communicates with the groove inside the positioning baffle 30, so that it is convenient for the mating key 29 to move out;

[0039] When the support disk 23 is displaced, it can drive the first gear 22 to pass over the top of the second rack 39, so that the welding torch 21 can drive the mating key 29 to rotate until it is obliquely aligned with the positioning baffle 30.

[0040] Such as Figure 9 , the reset device 17 includes a support rear plate 41, a front end bracket 43, and a fourth spring 42. The front end brackets 43 are symmetrically and fixedly installed at the top and bottom of the side end of the support rear plate 41. The fourth spring 42 is fixedly installed at the top and bottom of the side end of the support rear plate 41 close to the front end bracket 43, and the fourth spring 42 is located at the inner center of the front end bracket 43. A connecting plate 44 is fixedly installed at the end of the fourth spring 42 away from the support rear plate 41. A positioning plate 40 is fixedly installed at the end of the front end bracket 43 close to the connecting plate 44. Second racks 39 are symmetrically and fixedly installed at the top of the front end bracket 43 away from the support rear plate 41. A second gear 38 is rotatably installed at the center of the top of the front end bracket 43 close to the second rack 39. A winding wheel 37 is fixedly installed at the center of the top of the second gear 38. A connecting rope 36 is fixedly installed between the connecting plate 44 and the winding wheel 37. A reset spring is arranged at the end of the connecting plate 44 away from the fourth spring 42, so that the reset spring can drive the welding torch 21 to reset when the mating key 29 loses the restriction of the positioning baffle 30;

[0041] When the second gear 38 rotates, it can pull and move the connecting plate 44 through the connecting rope 36, so that the connecting plate 44 can drive the overall displacement of the contact device 16.

[0042] The displacement plate 11 is slidably inserted into the inner bottom end of the centralized cavity 15, the front end plate 12 is threadedly sleeved on the lead screw 13, the centralized cavity 15 is fixedly installed at one end of the side frame 18 close to the support bottom plate 19, the sliding key 24 is slidably inserted into the inner part of the front end bracket 43, the support disk 23 is fixedly installed on the side end of the connecting plate 44 facing away from the fourth spring 42, the tooth distribution angle on the first gear 22 is 30°, and the first gear 22 is vertically aligned with the second rack 39. An activity groove is opened at the center of the bottom end of the centralized cavity 15, through holes are opened at the bottom of both ends of the centralized cavity 15, and the thickness of the push plate 9 is the same as the height of the through hole. A groove is opened at the inner top end of the positioning baffle 30 facing away from the third spring 34, and the bottom end of the side of the mating key 29 facing away from the magnetic attraction plate 35 is inclined at 45°. The inside of the special-shaped air cylinder 32 is provided in a hollow state, and a sealed cavity is formed between the first piston rod 31, the special-shaped air cylinder 32 and the second piston rod 33. Circular gaskets are respectively fixedly installed at one end of the special-shaped air cylinder 32 close to the second piston rod 33 and one end of the second piston rod 33 away from the special-shaped air cylinder 32, and the third spring 34 is fixedly installed between the two circular gaskets. The alignment plate 40 is horizontally aligned with the second piston rod 33, and clamping grooves are opened on the opposite inner sides of the front end bracket 43, and the sliding key 24 is slidably inserted into the inside of the clamping grooves.

[0043] The working principle of Embodiment 1 is as follows: When in use, first place the profiles 3 into the centralized cavity 15 in sequence, so that the profiles 3 can be stacked and placed inside the centralized cavity 15. Subsequently, the driving motor 14 can be started to drive the lead screw 13 to rotate clockwise, so that the front end plate 12 can move on the lead screw 13 towards the end away from the driving motor 14. At this time, when the front end plate 12 is moving, it can drive the displacement plate 11 to move simultaneously by pulling the push plate 9. When the push plate 9 is in the normal state, it can be flush with the inner side wall of the centralized cavity 15 close to the driving motor 14, so that when the push plate 9 moves towards the end away from the driving motor 14, it can push the lowermost profile 3 inside the centralized cavity 15 to move. Subsequently, when the push plate 9 moves to the extreme position inside the centralized cavity 15, it can push the profile 3 to completely move out of the centralized cavity 15, and the profile 3 can enter onto the support bottom plate 19. At the same time, the two profiles 3 can be mutually attached;

[0044] Subsequently, the lead screw 13 is 10 cm longer than the centralized cavity 15, enabling the front end plate 12 to continuously move forward. When the front end plate 12 moves forward, it can drive the first rack 6 past the second gear 38, thereby driving the winding wheel 37 to rotate simultaneously. When the winding wheel 37 rotates, it can pull the connecting rope 36 to drive the connecting plate 44 to move towards the end near the second gear 38, enabling the welding torch 21 to move between the two profiles 3. And when the welding torch 21 is in the open state, when the welding torch 21 contacts the profile 3, it can weld the connecting components between the two profiles 3. Subsequently, when the sliding key 24 slides and is inserted into the card slot inside the fourth spring 42, it enables the support disk 23 to move linearly. When the support disk 23 drives the welding torch 21 to continuously move forward past the profile 3, it can drive the toothed part of the first gear 22 past the top of the second rack 39. Thus, the first gear 22 can drive the welding torch 21 to rotate through the rotating shaft 26. And, since the tooth angle distribution of the first gear 22 is 30°, after the first gear 22 drives the welding torch 21 to rotate 30°, the teeth of the first gear 22 will disengage from the second rack 39;

[0045] Meanwhile, when the rotating shaft 26 rotates 30°, it can drive the mating key 29 to move past the positioning baffle 30. When the mating key 29 contacts the positioning baffle 30, due to the setting of the second spring 28, it allows the mating key 29 to slide upward, facilitating the mating key 29 to pass by the side of the positioning baffle 30. When the mating key 29 rotates to 30°, the mating key 29 can be inserted into the groove inside the top of the positioning baffle 30, preventing the mating key 29 and the welding torch 21 from rotating again. Subsequently, the drive motor 14 can be started again to drive the lead screw 13 to rotate counterclockwise, so that the front end plate 12 can drive the push plate 9 to move into the centralized cavity 15, thus the push plate 9 can be reset. And when the push plate 9 is reset, the end of the push plate 9 near the special-shaped bracket 7 can be flush with the inner wall surface of the centralized cavity 15 near the drive motor 14, causing the profiles 3 in the upper layer inside the centralized cavity 15 to fall down to the bottom inside the centralized cavity 15, facilitating the push plate 9 to push the profiles 3 into the centralized cavity 15 again. Meanwhile, when the front end plate 12 resets backward, it can drive the first rack 6 past the second gear 38 again, enabling the winding wheel 37 to release the connecting rope 36. The elasticity of the fourth spring 42 will drive the support disk 23 to move backward and reset, enabling the welding torch 21 to be reset simultaneously;

[0046] When the support plate 23 is fully reset, the second piston rod 33 can be driven to contact the alignment plate 40. Through the blocking of the alignment plate 40, the second piston rod 33 can be inserted into the interior of the special-shaped gas cylinder 32, causing the first piston rod 31 to drive the positioning baffle 30 to move toward the end close to the extension bracket 25, so that the positioning baffle 30 can be pulled out of the matching key 29 and release the matching key 29. At the same time, the reset spring is fixedly installed on the side end of the connecting plate 44 away from the fourth spring 42. When the matching key 29 is out of contact with the positioning baffle 30, the reset spring will drive the welding gun 21 to rotate toward the end away from the support plate 23 until the welding gun 21 drives the magnetic suction plate 35 to contact the front baffle 20 again. The front baffle 20 and the magnetic suction plate 35 are adsorbed and fitted, so that the welding gun 21 can be placed in a vertical posture again, which is convenient for the welding gun 21 to weld the profile 3 again and complete the work.

[0047] Example 2

[0048] On the basis of Example 1, Figure 10 As shown, the support base plate 19 further includes a hydraulic cylinder 45 and a blocking plate 46 . The hydraulic cylinder 45 is fixedly mounted on the bottom end of the support base plate 19 , and the blocking plate 46 is fixedly mounted on the side end of the hydraulic cylinder 45 .

[0049] When implementing this embodiment, a release groove is opened at the bottom end of the supporting base plate 19, and the blocking plate 46 is located at the bottom end of the release groove, so that the blocking plate 46 can be located at the bottom end of the release groove for blocking when the profile 3 is welded. When the welding of the profile 3 is completed, the hydraulic cylinder 45 can be started to drive the blocking plate 46 to move to the release groove, so that the welded profile 3 can slide and fall from the inside of the supporting base plate 19, completing the discharge of the profile 3.

[0050] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated welding device for profile production, comprising a support component (2), wherein guide components (1) are fixedly mounted at both ends of the support component (2), and the inner bottom end of the support component (2) close to the guide component (1) is used to place a profile (3), characterized in that: The guide component (1) comprises an alignment device (4) and a collecting device (5), the alignment device (4) comprises a first rack (6), a special-shaped bracket (7) and a front end plate (12), the first rack (6) is fixedly mounted on one end of the special-shaped bracket (7), the special-shaped bracket (7) is fixedly mounted on the side end of the front end plate (12), a guide rod (10) is fixedly mounted on the side end of the front end plate (12) away from the first rack (6), and the guide rod (10) is away from the top of the front end plate (12). The end outer ring is slidably sleeved with a displacement plate (11), a first spring (8) is fixedly installed between the displacement plate (11) and the front end plate (12), a push plate (9) is fixedly installed at the top of the displacement plate (11), the collecting device (5) comprises a screw rod (13), a drive motor (14) and a concentration cavity (15), the drive motor (14) is fixedly installed at one end of the bottom of the concentration cavity (15), and the screw rod (13) is fixedly installed at the center of the side end of the drive motor (14); The support component (2) comprises a contact device (16), a reset device (17), a side frame (18) and a support base plate (19); the contact device (16) is symmetrically slidably inserted into the top end and the bottom end of the reset device (17); the side frame (18) is fixedly mounted on both sides of the reset device (17); and the support base plate (19) is symmetrically fixedly mounted on one end of the side frame (18) away from the contact device (16).

2. The automatic welding equipment for profile production according to claim 1, characterized in that: The contact device (16) comprises an extension bracket (25), a sliding key (24), a support plate (23), a rotating shaft (26) and a welding gun (21); The sliding key (24) is fixedly mounted on the two ends of the top of the support plate (23); the extending bracket (25) is symmetrically fixedly mounted on the top of the supporting plate (23), and the extending bracket (25) is located between the two sliding keys (24); the rotating shaft (26) is rotatably mounted inside the front end of the extending bracket (25); the welding gun (21) is fixedly mounted between the two rotating shafts (26); the side end of the rotating shaft (26) away from the welding gun (21) is fixedly mounted with a first gear (22); a front baffle (20) is fixedly mounted on the bottom of the front end of the extending bracket (25); two vertical rods (27) are slidably inserted inside the rotating shaft (26); a matching key (29) is fixedly mounted on the bottom end of the vertical rod (27); two second springs (28) are fixedly mounted between the matching key (29) and the rotating shaft (26), and the second springs (28) are located on the outer ring of the vertical rod (27); A magnetic plate (35) is fixedly installed on the side end of the rotating shaft (26) close to the front baffle (20), and a special-shaped air cylinder (32) is fixedly installed on the side end of the magnetic plate (35) close to the vertical rod (27). A second piston rod (33) is slidably inserted in the interior of the special-shaped air cylinder (32) away from the vertical rod (27), and a third spring (34) is fixedly installed between the second piston rod (33) and the special-shaped air cylinder (32). A first piston rod (31) is slidably inserted in the interior of the end of the special-shaped air cylinder (32) close to the vertical rod (27), and a positioning baffle (30) is fixedly installed on the end of the first piston rod (31) close to the first gear (22); The support plate (23) can drive the first gear (22) to pass the top end of the second rack (39) when displaced, so that the welding gun (21) can drive the matching key (29) to rotate and be tilted and aligned with the positioning baffle (30).

3. The automatic welding equipment for profile production according to claim 2, characterized in that: The reset device (17) comprises a supporting rear plate (41), a front end bracket (43) and a fourth spring (42), wherein the front end bracket (43) is symmetrically fixedly mounted on the top and bottom of the side end of the supporting rear plate (41), the fourth spring (42) is fixedly mounted on the top and bottom of the side end of the supporting rear plate (41) close to the front end bracket (43), and the fourth spring (42) is located at the inner center of the front end bracket (43), and a connecting plate (44) is fixedly mounted on one end of the fourth spring (42) away from the supporting rear plate (41). , an alignment plate (40) is fixedly mounted on one end of the front end bracket (43) close to the connecting plate (44), a second rack (39) is symmetrically fixedly mounted on the top end of the front end bracket (43) away from the supporting rear plate (41), a second gear (38) is rotatably mounted on the top center of the front end bracket (43) close to the second rack (39), a winding wheel (37) is fixedly mounted on the top center of the second gear (38), and a connecting rope (36) is fixedly mounted between the connecting plate (44) and the winding wheel (37); When the second gear (38) rotates, the connecting plate (44) can be pulled to move by the connecting rope (36), so that the connecting plate (44) can drive the contact device (16) to move as a whole.

4. The automatic welding equipment for profile production according to claim 3 is characterized in that: The displacement plate (11) is slidably inserted into the bottom end of the central cavity (15), the front end plate (12) is threadedly sleeved on the screw rod (13), the central cavity (15) is fixedly mounted on one end of the side frame (18) close to the supporting bottom plate (19), the sliding key (24) is slidably inserted into the interior of the front end bracket (43), and the support plate (23) is fixedly mounted on the side end of the connecting plate (44) away from the fourth spring (42).

5. The automatic welding equipment for profile production according to claim 4 is characterized in that: The tooth distribution angle on the first gear (22) is 30 degrees, and the first gear (22) is vertically aligned with the second rack (39), and a movable groove is provided at the center of the bottom end of the concentrated cavity (15).

6. The automatic welding equipment for profile production according to claim 5, characterized in that: Through holes are provided at the bottoms of both ends of the concentrated cavity (15), and the thickness of the pushing plate (9) is the same as the height of the through holes. A groove is provided inside the top end of the positioning baffle (30) away from the third spring (34).

7. The automatic welding equipment for profile production according to claim 6, characterized in that: The bottom of the side end of the mating key (29) is inclined at 45° away from the magnetic plate (35), the interior of the special-shaped gas cylinder (32) is hollow, and a closed cavity is formed between the first piston rod (31), the special-shaped gas cylinder (32) and the second piston rod (33).

8. The automatic welding equipment for profile production according to claim 7, characterized in that: One end of the special-shaped air cylinder (32) close to the second piston rod (33) and one end of the second piston rod (33) away from the special-shaped air cylinder (32) are respectively fixedly installed with round gaskets, and the third spring (34) is fixedly installed between the two round gaskets, the alignment plate (40) is horizontally aligned with the second piston rod (33), and a slot is provided on the opposite inner side of the front end bracket (43), and the sliding key (24) is slidably inserted into the inside of the slot.

9. The automatic welding equipment for profile production according to claim 8, characterized in that: The supporting base plate (19) further comprises a hydraulic cylinder (45) and a blocking plate (46), wherein the hydraulic cylinder (45) is fixedly mounted on the bottom end of the supporting base plate (19), and the blocking plate (46) is fixedly mounted on the side end of the hydraulic cylinder (45).

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