A pipe bending welding device for pipe fitting production

Abstract

The present invention provides a pipe bending welding device for pipe fitting production, and relates to the technical field of pipe fitting welding. It comprises a mounting base, the mounting base is mounted on a processing lathe, the top of the mounting base is slidably connected to a limit plate, the limit plate is used to fix the position of the pipe bending, the mounting base is rotatably connected to two symmetrically arranged placement columns, the placement columns are used to place straight pipes, the top of the mounting base is fixedly connected to a fixing frame, the fixing frame is fixedly connected to a hydraulic cylinder, the hydraulic cylinder is located directly above the placement column on one side, and an auxiliary component is fixedly connected below the hydraulic cylinder. By arranging a clamping component and an auxiliary component, the present invention can not only improve the efficiency of welding when the operator is welding the pipe bending, but also can weld pipe bendings of different diameters, thereby reducing the time for adjusting the equipment.

Description

Technical Field

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

[0002] When processing plumbing pipe fittings, it is usually necessary to weld the bent pipes and the straight pipes. When welding, the operator usually realizes the welding of the joints by moving the welding head. However, in the actual operation process, the speed cannot be kept consistent when the welding head is moved manually, which can easily cause the welding joints to be insufficiently sealed and have certain gaps, affecting the use of plumbing pipe fittings. At the same time, when welding the bent pipes of plumbing pipe fittings, usually both ends of the bent pipes need to be welded. When the operator is welding, it is necessary to operate the straight pipe angles on both sides to make the cross-sections of the straight pipe and the bent pipe contact. This process is relatively cumbersome and will take a lot of time, affecting the efficiency of welding. Therefore, the present application provides a bent pipe welding device for pipe fitting production to meet the needs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a pipe bending welding device for pipe fitting production to solve the problems of uneven sealing degree and low welding efficiency during welding by existing operators.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A pipe bending welding device for pipe fitting production comprises a mounting base, the mounting base is mounted on a processing lathe, the top of the mounting base is slidably connected to a limit plate, the limit plate is used to fix the position of the bent pipe, the mounting base is rotatably connected to two symmetrically arranged placement columns, the placement columns are used to place straight pipes, the top of the mounting base is fixedly connected to a fixing frame, the fixing frame is fixedly connected to a hydraulic cylinder, the hydraulic cylinder is located just above the placement column on one side, the bottom of the hydraulic cylinder is fixedly connected to an auxiliary component, the auxiliary component is provided with a welding head, The auxiliary component is used to assist the welding head in welding straight pipes and bent pipes. A clamping component is provided in the mounting base, and the clamping component is used to clamp and determine the inclination angle of the straight pipe; the two sides of the limit plate are slidably connected to the limit blocks, and the limit rod fixedly connected between the two limit blocks slides inside the limit plate through a spring elastic limit, and a locking rod is threadedly connected to one side of the bottom of the limit plate, and the bottom of the locking rod is rotationally connected to a locking plate, and the locking plate is slidably connected to the mounting base; the clamping component includes a double-sided tooth plate, and one end of the double-sided tooth plate is rotationally connected to the limit There is a threaded rod, one end of the threaded rod is fixedly connected to a rotating disk, and a handle is provided on one side of the rotating disk; the two sides of the bilateral toothed plate are respectively meshed and connected with the first gear, and the two first gears are fixedly connected with a placement column, a rotating plate is rotatably connected in the placement column, the top of the rotating plate is fixedly connected with a second gear, and the two sides of the second gear are respectively meshed and connected with a clamping plate; the bottom of the clamping plate is meshed and connected with the second gear through a toothed plate, and the toothed plate at the bottom of the clamping plate is slidably connected to the inside of the placement column, and a trigger plate is fixedly connected to the clamping plate. The threaded rod is threadedly connected to one side of the mounting base, and the double-sided toothed plate is slidably connected to the inside of the mounting base; the auxiliary component includes a pressing cylinder, the bottom of the pressing cylinder is rotatably connected to a synchronous plate, a trigger plate of a clamping plate is inserted in the synchronous plate, the top of the trigger plate is fixedly connected to a lifting plate, the lifting plate is located inside the pressing cylinder, and the top of the pressing cylinder is fixedly connected to a first oil storage rod; a piston rod is slidably connected to the first oil storage rod, the bottom of the piston rod is fixedly connected to the lifting plate, and the top of the first oil storage rod is connected to the oil storage plate through a hose.

[0006] Optionally, the surface sealing rotation of the oil storage plate is connected to an auxiliary plate, a hose is plugged into the auxiliary plate, one side of the oil storage plate is fixedly connected to the third gear via a connecting rod, the other side of the oil storage plate is fixedly connected to a second oil storage rod, the bottom of the piston in the second oil storage rod is fixedly connected to a welding head, and the oil storage cavity of the second oil storage rod is communicated with the oil storage cavity of the oil storage plate.

[0007] Optionally, the third gear is rotatably connected in the mounting plate, a slide groove is opened on one side of the mounting plate, the connecting rod is rotatably connected in the slide groove, the top of the mounting plate is fixedly connected to a hose through a fixing rod, the other side of the mounting plate is fixedly connected to a support plate, and the support plate is fixedly connected to the placement column.

[0008] Optionally, a servo motor is fixedly connected to the bottom of the mounting plate on one side of the slide groove, a gear fixedly connected to the output end of the servo motor is rotatably connected to the inside of the mounting plate, and the gear on the servo motor is meshed with a third gear.

[0009] Compared with the prior art, the present invention has at least the following beneficial effects:

[0010] In the above scheme, by setting up a clamping assembly, when welding a bent pipe and a straight pipe, the operator can clamp the straight pipe by rotating the rotating plate to avoid the position of the straight pipe changing during the welding process. At the same time, the operator can change the inclination angle of the straight pipe when shaking the handle so that the cross section of the straight pipe can be aligned with the cross section of the bent pipe. This not only facilitates welding, but also can determine the inclination angle of the straight pipe when welding the straight pipe on the other side, avoiding the process of readjusting the inclination angle of the straight pipe during welding, thereby improving work efficiency.

[0011] By setting up auxiliary components, when welding bent pipes and straight pipes, the welding head can rotate around the connection between the bent pipes and the straight pipes for welding, which can not only increase the sealing of the welding but also reduce the time required for welding. Furthermore, when welding bent pipes of different diameters, the elongation distance of the welding head can be changed by the distance that the pressing cylinder descends, so that when the pressing cylinder contacts the surface of the straight pipe, the welding head can be located above the connection between the bent pipe and the straight pipe, thereby realizing the welding of bent pipes of different diameters.

[0012] In summary, by setting the clamping assembly and the auxiliary assembly, when the operator is welding the bent pipe, not only can the welding efficiency be improved, but also the bent pipes of different diameters can be welded, thereby reducing the time for adjusting the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural diagram of a pipe bending welding device for pipe fitting production;

[0014] Figure 2 It is a rear view of the present invention;

[0015] Figure 3 It is a structural schematic diagram of the connection between the limit plate and the mounting base of the present invention;

[0016] Figure 4 It is a structural schematic diagram of the limiting plate of the present invention;

[0017] Figure 5 It is a schematic diagram of the structure of the clamping assembly of the present invention;

[0018] Figure 6 An exploded view of the placement column of the present invention;

[0019] Figure 7 It is a structural schematic diagram of the connection between the auxiliary component and the mounting base of the present invention;

[0020] Figure 8 An exploded view of the pressing cylinder of the present invention;

[0021] Fig. 9 It is a schematic diagram of the structure of the auxiliary components of the present invention;

[0022] Fig.10 It is a schematic diagram of the exploded structure of the auxiliary component of the present invention;

[0023] Fig.11 It is a partial cross-sectional view of the oil storage plate of the present invention;

[0024] Fig.12 This is a schematic diagram of the present invention.

[0025] Reference numerals:

[0026] 1. Mounting base; 2. Limiting plate; 21. Limiting block; 22. Locking rod; 23. Locking plate; 3. Placing column; 4. Fixing frame; 41. Hydraulic cylinder; 5. Welding head; 6. Clamping assembly; 61. Double-sided tooth plate; 62. Threaded rod; 621. Turntable; 63. First gear; 64. Rotating plate; 641. Second gear; 65. Clamping plate; 651. Trigger plate; 7. Auxiliary assembly; 71. Pressing cylinder; 711. Synchronous plate; 712. Lifting plate; 72. First oil storage rod; 721. Piston rod; 73. Oil storage plate; 731. Auxiliary plate; 732. Connecting rod; 733. Third gear; 74. Second oil storage rod; 75. Mounting plate; 751. Support plate; 752. Slide; 76. Servo motor. DETAILED DESCRIPTION

[0027] The following is a detailed description of a pipe bending welding device for pipe fitting production provided by the present invention in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0028] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0029] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0030] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0031] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0032] like Figures 1 to 12As shown, an embodiment of the present invention provides a pipe bending welding device for pipe fitting production, including a mounting base 1, the mounting base 1 is mounted on a processing lathe, the top of the mounting base 1 is slidably connected to a limit plate 2, the limit plate 2 is used to fix the position of the bent pipe, the mounting base 1 is rotatably connected to two symmetrically arranged placement columns 3, the placement columns 3 are used to place straight pipes, the top of the mounting base 1 is fixedly connected to a fixing frame 4, the fixing frame 4 is fixedly connected to a hydraulic cylinder 41, the hydraulic cylinder 41 is located just above the placement column 3 on one side, the lower part of the hydraulic cylinder 41 is fixedly connected to an auxiliary component 7, the auxiliary component 7 is provided with a welding head 5, The auxiliary component 7 is used to assist the welding head 5 in welding straight pipes and bent pipes. A clamping component 6 is provided in the mounting base 1. The clamping component 6 is used to clamp and determine the inclination angle of the straight pipe. The two sides of the limit plate 2 are slidably connected to the limit blocks 21. The limit rod fixedly connected between the two limit blocks 21 slides inside the limit plate 2 through a spring elastic limit. A locking rod 22 is threadedly connected to one side of the bottom of the limit plate 2. The bottom limit rotation of the locking rod 22 is connected to a locking plate 23. The locking plate 23 is slidably connected to the mounting base 1. When the operator performs bent pipe welding, first, the operator needs to place the bent pipe in the limit position. The operator then places the straight pipe on one side on the placement column 3 under the fixing frame 4, and fixes the straight pipe on the placement column 3 by operating the clamping assembly 6, while tilting the straight pipe at a certain angle so that the cross section of the straight pipe is parallel to the cross section of the bent pipe. Then, the operator needs to push the limit plate 2 to bring the bent pipe close to the straight pipe until the cross section of the bent pipe is aligned with the cross section of the straight pipe. At this time, the operator needs to rotate the locking rod 22 to fix the locking plate 23 in the mounting base 1, thereby fixing the position of the limit plate 2, and then Afterwards, the operator uses the auxiliary component 7 to rotate the welding head 5 around the connection between the straight pipe and the bent pipe. When the welding head 5 rotates around the straight pipe for one circle, the welding of the bent pipe and the straight pipe on one side can be completed. When welding the straight pipe on the other side of the bent pipe, it is first necessary to remove the welded straight pipe and the bent pipe and flip them so that the straight pipe welded on the bent pipe is located on the placement column 3 on the other side, and then place the straight pipe to be welded on the placement column 3 under the fixing frame 4. At this time, it is only necessary to adjust the position of the straight pipe to be welded so that the cross-section of the straight pipe to be welded can be aligned with the cross-section of the bent pipe, and welding can be performed after alignment.

[0033] As an implementation method in this embodiment, Figures 1 to 6As shown, the clamping assembly 6 includes a double-sided toothed plate 61, one end of the double-sided toothed plate 61 is rotationally connected with a threaded rod 62, one end of the threaded rod 62 is fixedly connected with a turntable 621, one side of the turntable 621 is provided with a handle, both sides of the double-sided toothed plate 61 are respectively meshed with first gears 63, both first gears 63 are fixedly connected with a placement column 3, a rotating plate 64 is rotatably connected in the placement column 3, the top of the rotating plate 64 is fixedly connected with a second gear 641, both sides of the second gear 641 are respectively meshed with clamping plates 65, and the bottom of the clamping plate 65 is connected with a second gear 641. The toothed plate is meshed with the second gear 641, and the toothed plate at the bottom of the clamping plate 65 is slidably connected to the inside of the placement column 3. The clamping plate 65 is fixedly connected with a trigger plate 651. The threaded rod 62 is threadedly connected to one side of the mounting base 1. The double-sided toothed plate 61 is slidably connected to the inside of the mounting base 1. When the straight pipe is placed on the placement column 3 located below the fixed frame 4, the operator needs to rotate the rotating plate 64. When the rotating plate 64 rotates, the two clamping plates 65 meshed with the second gear 641 will approach each other and clamp the straight pipe. Next, the operator needs to shake the handle on the turntable 621 to rotate the threaded rod 62. When the threaded rod 62 rotates, since the threaded rod 62 is threadedly connected to the mounting base 1, the double-sided toothed plate 61 will slide in the mounting base 1. While sliding, the first gears 63 meshing on both sides of the double-sided toothed plate 61 will rotate in opposite directions, thereby rotating the placement column 3. When the cross section of the straight pipe on the placement column 3 is aligned with the cross section of the bent pipe, stop shaking the handle. When the straight pipe is aligned with the bent pipe, the welding head 5 can perform welding on the connection between the bent pipe and the straight pipe. When welding is completed, the operator needs to rotate the rotating plate 64 in the opposite direction and flip the bent pipe and the straight pipe so that the welded straight pipe is located on the placement column 3 on the other side, and rotate the rotating plate 64 at the corresponding position to fix the straight pipe, and then place another straight pipe to be welded on the placement column 3. At this time, since the inclination angle of the placement column 3 has been determined, the operator only needs to control the position of the straight pipe to be welded. When the cross-section of the straight pipe to be welded coincides with the cross-section of the bent pipe, secondary welding can be performed at this time so that straight pipes are welded on both sides of the bent pipe.

[0034] As an implementation method in this embodiment, Figures 7 to 12As shown, the auxiliary component 7 includes a pressing cylinder 71, the bottom of the pressing cylinder 71 is rotatably connected to a synchronous plate 711, the synchronous plate 711 is plugged with a trigger plate 651 of the clamping plate 65, the top of the trigger plate 651 is fixedly connected to a lifting plate 712, the lifting plate 712 is located inside the pressing cylinder 71, the top of the pressing cylinder 71 is fixedly connected to a first oil storage rod 72, the first oil storage rod 72 is slidably connected to a piston rod 721, the bottom of the piston rod 721 is fixedly connected to the lifting plate 712, the top of the first oil storage rod 72 is connected to the oil storage plate 73 through a hose, the surface of the oil storage plate 73 is sealingly rotatably connected to an auxiliary plate 731, the auxiliary plate 731 is plugged with a hose, and one side of the oil storage plate 73 is connected to the auxiliary plate 731. The third gear 733 is fixedly connected to the third gear 733 through a connecting rod 732, and the other side of the oil storage plate 73 is fixedly connected to a second oil storage rod 74, and the bottom of the piston in the second oil storage rod 74 is fixedly connected to a welding head 5, and the oil storage cavity of the second oil storage rod 74 is connected to the oil storage cavity of the oil storage plate 73. The third gear 733 is rotatably connected to the mounting plate 75, and a slide groove 752 is provided on one side of the mounting plate 75, and the connecting rod 732 is rotatably connected to the slide groove 752. The top of the mounting plate 75 is fixedly connected to a hose through a fixing rod, and the other side of the mounting plate 75 is fixedly connected to a support plate 751, and the support plate 751 is fixedly connected to the placement column 3, and the bottom of the mounting plate 75 with a slide groove 752 is fixedly connected to a servo motor 7 6. The gear fixedly connected to the output end of the servo motor 76 is rotatably connected to the inside of the mounting plate 75. The gear on the servo motor 76 is meshed with the third gear 733. When the straight tube is placed and fixed on the placing column 3, the hydraulic cylinder 41 will control the pressing cylinder 71 to descend. When the pressing cylinder 71 descends, the trigger plate 651 will push the lifting plate 712. Since the first oil storage rod 72 is fixedly connected to the pressing cylinder 71, the piston rod 721 will slide in the first oil storage rod 72 and squeeze part of the oil in the first oil storage rod 72 into the oil storage plate 73 through the hose. When the oil enters the oil storage plate 73, the oil in the oil storage plate 73 will be squeezed into the second oil storage rod 74. When the oil enters the second oil storage rod 74, the oil will push the piston, causing the welding head 5 to gradually grow. When the bottom of the pressing cylinder 71 contacts the straight pipe, the hydraulic cylinder 41 stops extending. At the same time, the piston rod 721 stops moving, thereby stopping the welding head 5 from extending. Then, the operator needs to control the servo motor 76 to rotate. When the servo motor 76 rotates, the third gear 733 meshing with the gear starts to rotate. When the third gear 733 rotates, the oil storage plate 73 will rotate synchronously. Since the welding head 5 is fixed on one side of the oil storage plate 73, the welding head 5 can rotate around the straight pipe at this time, and the position where the straight pipe and the bent pipe are in contact can be welded while rotating.

[0035] In this embodiment, if Figures 7 to 12As shown, the welding head 5 is located directly above the cross section of the straight pipe. When the pressing cylinder 71 is pressed on the straight pipe, the welding head 5 is located above the contact between the straight pipe and the bent pipe. When the welding head 5 rotates, the connection between the straight pipe and the bent pipe can be welded.

[0036] The working principle of the technical solution provided by the present invention is as follows: when the operator performs elbow welding, first, the operator needs to place the elbow on the limit plate 2, and make the two limit blocks 21 located at symmetrical positions on both sides of the elbow, and then the operator needs to place the straight pipe on one side on the placement column 3 under the fixed frame 4, and fix the straight pipe on the placement column 3 by operating the clamping assembly 6, and at the same time tilt the straight pipe at a certain angle so that the cross section of the straight pipe is parallel to the cross section of the elbow.

[0037] Then, the operator needs to push the limit plate 2 to make the bent pipe close to the straight pipe until the cross-section of the bent pipe is aligned with the cross-section of the straight pipe. At this time, the operator needs to rotate the locking rod 22 to fix the locking plate 23 in the mounting base 1, thereby fixing the position of the limit plate 2. Then the operator uses the auxiliary component 7 to rotate the welding head 5 around the connection between the straight pipe and the bent pipe. When the welding head 5 rotates around the straight pipe for one circle, the welding of the bent pipe and the straight pipe on one side can be completed. When welding the straight pipe on the other side of the bent pipe, first remove the welded straight pipe and bent pipe and flip them so that the straight pipe welded on the bent pipe is located on the placement column 3 on the other side. Then place the straight pipe to be welded on the placement column 3 under the fixing frame 4. At this time, you only need to adjust the position of the straight pipe to be welded to align the cross-section of the straight pipe to be welded with the cross-section of the bent pipe. After alignment, welding can be performed.

[0038] When the straight pipe is placed on the placement column 3 located below the fixed frame 4, at this time, the operator needs to rotate the rotating plate 64. When the rotating plate 64 rotates, the two clamping plates 65 meshingly connected to the second gear 641 will approach each other and clamp the straight pipe. Then, the operator needs to shake the handle on the turntable 621 to rotate the threaded rod 62. When the threaded rod 62 rotates, since the threaded rod 62 is threadedly connected to the mounting base 1, the double-sided toothed plate 61 will slide in the mounting base 1. While sliding, the first gear 63 meshingly connected to both sides of the double-sided toothed plate 61 will rotate towards each other, thereby rotating the placement column 3. When the cross-section of the straight pipe on the placement column 3 is aligned with the cross-section of the bent pipe, stop shaking the handle at this time. When the straight pipe is aligned with the bent pipe, the welding head 5 can weld the connection between the bent pipe and the straight pipe.

[0039] When welding is completed, the operator needs to rotate the rotating plate 64 in the opposite direction and flip the bent pipe and the straight pipe so that the welded straight pipe is located on the placement column 3 on the other side, and rotate the rotating plate 64 at the corresponding position to fix the straight pipe, and then place another straight pipe to be welded on the placement column 3. At this time, since the inclination angle of the placement column 3 has been determined, the operator only needs to control the position of the straight pipe to be welded. When the cross-section of the straight pipe to be welded coincides with the cross-section of the bent pipe, secondary welding can be performed at this time so that straight pipes are welded on both sides of the bent pipe. When the straight pipe is placed and fixed on the placement column 3, the hydraulic cylinder 41 will control the pressing cylinder 71 to descend. When the pressing cylinder 71 descends, the trigger plate 651 will push the lifting plate 712. Since the first oil storage rod 72 is fixedly connected to the pressing cylinder 71, the piston rod 721 will slide in the first oil storage rod 72 and squeeze part of the oil in the first oil storage rod 72 into the oil storage plate 73 through the hose. When the oil enters the oil storage plate 73, At this time, the oil in the oil storage plate 73 will be squeezed into the second oil storage rod 74. When the oil enters the second oil storage rod 74, the oil will push the piston to gradually increase the welding head 5. When the bottom of the pressing cylinder 71 contacts the straight pipe, the hydraulic cylinder 41 stops extending. At the same time, the piston rod 721 stops moving, thereby stopping the welding head 5 from extending. Then, the operator needs to control the servo motor 76 to rotate. When the servo motor 76 rotates, the third gear 733 meshingly connected to the gear starts to rotate. When the third gear 733 rotates, the oil storage plate 73 will rotate synchronously. Since the welding head 5 is fixed on one side of the oil storage plate 73, the welding head 5 can rotate around the straight pipe at this time. While rotating, the position where the straight pipe and the bent pipe are in contact can be welded. The welding head 5 is located directly above the cross section of the straight pipe. When the pressing cylinder 71 is pressed on the straight pipe, the welding head 5 is located above the indirect contact between the straight pipe and the bent pipe. When the welding head 5 rotates, the connection between the straight pipe and the bent pipe can be welded.

[0040] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pipe bending welding device for pipe fitting production, comprising a mounting base, the mounting base is mounted on a processing lathe, the top of the mounting base is slidably connected to a limit plate, the limit plate is used to fix the position of the bent pipe, the mounting base is rotatably connected to two symmetrically arranged placement columns, the placement columns are used to place straight pipes, the top of the mounting base is fixedly connected to a fixing frame, the fixing frame is fixedly connected to a hydraulic cylinder, the hydraulic cylinder is located directly above the placement column on one side, and is characterized in that An auxiliary component is fixedly connected below the hydraulic cylinder; The auxiliary component is provided with a welding head, and the auxiliary component is used to assist the welding head in welding straight pipes and bent pipes. The mounting base is provided with a clamping component, and the clamping component is used to clamp and determine the inclination angle of the straight pipe; The two sides of the limit plate are slidably connected to the limit blocks, and the limit rod fixedly connected between the two limit blocks slides inside the limit plate through a spring elastic limit, and a locking rod is threadedly connected to one side of the bottom of the limit plate, and the bottom of the locking rod is rotationally connected to the locking plate, and the locking plate is slidably connected to the mounting base; The clamping assembly comprises a double-sided toothed plate, one end of which is connected to a threaded rod for limited rotation, one end of which is fixedly connected to a rotating disk, and a handle is provided on one side of the rotating disk; The two sides of the double-sided toothed plate are respectively meshed and connected with first gears, and the two first gears are fixedly connected with a placement column, and a rotating plate is rotatably connected in the placement column, and the top of the rotating plate is fixedly connected with a second gear, and the two sides of the second gear are respectively meshed and connected with a clamping plate; The bottom of the clamping plate is meshed with the second gear through a toothed plate, the toothed plate at the bottom of the clamping plate is slidably connected to the inside of the placement column, a trigger plate is fixedly connected to the clamping plate, the threaded rod is threadedly connected to one side of the mounting base, and the double-sided toothed plate is slidably connected to the inside of the mounting base; The auxiliary component includes a pressing cylinder, the bottom of the pressing cylinder is rotatably connected to a synchronous plate, a trigger plate of a clamping plate is inserted in the synchronous plate, a lifting plate is fixedly connected to the top of the trigger plate, the lifting plate is located inside the pressing cylinder, and a first oil storage rod is fixedly connected to the top of the pressing cylinder; A piston rod is slidably connected to the first oil storage rod, the bottom of the piston rod is fixedly connected to the lifting plate, and the top of the first oil storage rod is connected to the oil storage plate through a hose; The surface sealing rotation of the oil storage plate is connected to an auxiliary plate, a hose is inserted into the auxiliary plate, one side of the oil storage plate is fixedly connected to the third gear via a connecting rod, the other side of the oil storage plate is fixedly connected to a second oil storage rod, the bottom of the piston in the second oil storage rod is fixedly connected to a welding head, and the oil storage cavity of the second oil storage rod is communicated with the oil storage cavity of the oil storage plate.

2. The pipe bending welding device for pipe fitting production according to claim 1, characterized in that: The third gear is rotatably connected in the mounting plate, a slide groove is provided on one side of the mounting plate, the connecting rod is rotatably connected in the slide groove, a hose is fixedly connected to the top of the mounting plate through a fixing rod, a support plate is fixedly connected to the other side of the mounting plate, and the support plate is fixedly connected to the placement column.

3. The pipe bending welding device for pipe fitting production according to claim 2, characterized in that: A servo motor is fixedly connected to the bottom of one side of the mounting plate where the slide groove is opened, and a gear fixedly connected to the output end of the servo motor is rotatably connected to the inside of the mounting plate, and the gear on the servo motor is meshed with the third gear.

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