A welding device with precise control function

Abstract

The present invention belongs to the technical field of welding equipment, and discloses a welding equipment with precise control function, which is used for welding pipe fittings, and comprises a workbench, a base is installed on the top of the workbench, two groups of extrusion mechanisms are arranged on the top of the workbench, and are symmetrically distributed on the left and right sides of the base, and two groups of support cylinders are fixedly installed on the top of the base. After redesign and optimization, the equipment clamps the pipe fittings between three groups of clamping blocks, and synchronously completes the centering operation. At the same time, by utilizing the rotating installation design of the support ring, when the clamping block completes the clamping of the pipe fitting, the limiting abutment between the limiting groove and the limiting column can be utilized to drive the support ring to rotate synchronously after the clamping is completed, thereby realizing the function of first clamping and positioning the equipment, and then rotating and fixing it, effectively reducing the gap between the welding objects, and improving the precise control accuracy of the equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, in particular to a welding equipment with a precise control function. Background Art

[0002] Pipeline welding generally involves two sets of separate metal pipes being fixed and combined, and then the pipes are driven to perform synchronous circumferential welding. In the prior art, it is more common to use a planetary gear set to limit the pipe at the center of the gear set, and use multiple sets of planetary gears to limit the pipe and rotate it, thereby achieving synchronous rotation and limiting the pipe before welding. However, this method reduces the accuracy of the fixed limit of the pipe. In order for the fixed cylinder installed by the planetary gear to abut against the outer surface of the pipe for limit, there is a gap in the contact between the two, thereby increasing the error. Although the synchronous rotation of the planetary gear improves the welding efficiency of the welding equipment, it also causes a slight offset between the axis of the pipe and the axis of the fixed component when the pipe is fixed, which ultimately causes an offset at the welded pipe interface, reducing the precise control accuracy of the equipment. Summary of the invention

[0003] The object of the present invention is to provide a welding device with precise control function to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a welding device with a precise control function, which is used for welding pipe fittings, comprising a workbench, a base is installed on the top of the workbench, two groups of extrusion mechanisms are arranged on the top of the workbench and are symmetrically distributed on the left and right sides of the base, two groups of support cylinders are fixedly installed on the top of the base, a power mechanism is installed on the bottom of the support cylinder, and welding mechanisms are installed on the tops of the two groups of support cylinders;

[0005] A support ring is rotatably installed on the inner wall of the support cylinder, and three groups of equiangularly distributed accommodating columns are fixedly installed on the inner ring surface of the support ring. The interior of the accommodating column is movably sleeved with a telescopic column and a spring, and the outer end of the spring is fixedly connected with a connecting plate, and the bottom end of the connecting plate is movably sleeved with a directional shaft, and the outer surface of the directional shaft is movably sleeved with a clamping block, and the outer surface of the clamping block is movably sleeved with a buffer cylinder, and the connecting plate is fixedly connected to a side close to the extrusion mechanism with a limiting column, and the outer surface of the limiting column is movably clamped with a limiting ring, and the side of the limiting ring is provided with three groups of equiangularly distributed limiting grooves, and the limiting ring is driven by a power mechanism.

[0006] As a preferred embodiment of the present invention, working grooves are provided on the left and right sides of the top of the workbench, and a screw is rotatably installed in the middle of the workbench, the extrusion mechanism includes a slider threadedly installed on the screw, a hydraulic rod 1 is fixedly installed on the top of the slider, a fixed seat is fixedly installed on the telescopic end of the hydraulic rod 1, a turntable is rotatably installed on the fixed seat toward one side of the support tube, the turntable faces a buffer plate of the support tube, the slider slides horizontally along the inner wall of the working groove, and the internal threads of the sliders on the left and right sides are oppositely arranged.

[0007] As a preferred embodiment of the present invention, the welding mechanism includes a fixed platform fixedly installed on the top of the two groups of support cylinders, a hydraulic rod 2 is fixedly installed on the bottom of the fixed platform, a welding gun is fixedly installed on the telescopic end of the hydraulic rod 2, and the axis of the welding gun intersects with the axis of the pipe fitting.

[0008] As a preferred embodiment of the present invention, the power mechanism includes a protective cover fixedly installed on the bottom of the support tube, and a motor is installed on the right side of the protective cover. The output shaft of the motor passes through two sets of protective covers, and two sets of gears 1 are fixedly installed on the inner wall of the protective cover, and the outer surface of the gear 1 is meshedly connected with the gear 2, and the gear 2 is fixedly installed on the outer surface of the limit ring.

[0009] As a preferred embodiment of the present invention, the pipe fittings are arranged in two groups and are mounted in abutment with the outer surfaces of the three groups of clamping blocks, the contact ends of the two groups of pipe fittings are in abutment with each other, and the other ends thereof are in abutment with the buffer plate.

[0010] As a preferred embodiment of the present invention, the limiting groove is designed in a fan shape, and the center of the limiting groove is offset from the center of the limiting ring, and the outer surface of the limiting column is movably engaged with the inner wall of the limiting groove.

[0011] As a preferred embodiment of the present invention, a reinforcement block is fixedly installed on one side of the connecting plate, the outer end of the telescopic column is fixedly connected to the connecting plate and the reinforcement block, and the reinforcement block is in the shape of a right triangle.

[0012] As a preferred embodiment of the present invention, two ends of the spring are elastically connected to the accommodating column and the telescopic column respectively, and the axis of the telescopic column always points to the axis of the limiting ring.

[0013] As a preferred embodiment of the present invention, one end of the clamping block is designed to be conical, the outer surface of the clamping block is provided with a groove, the buffer tube is movably sleeved in the groove, and the buffer tube and the buffer plate are both made of hard rubber.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. This equipment has been redesigned and optimized, and a clamping module with a limit ring, a limit column, a connecting plate, a accommodating column and a telescopic column as the core has been added. When the pipe fitting is located in the three groups of directional shafts and the clamping block, the power mechanism is used to transmit power to the limit ring and control it to rotate toward the "closed" side. At this time, the three groups of limit grooves opened on the surface of the limit ring are used to rotate and abut the limit column located therein, and the limit column is driven toward the side close to the pipe fitting, thereby driving the connecting plate and the directional shaft to perform synchronous centripetal movement, clamping the pipe fitting between the three groups of clamping blocks, and completing the centering operation synchronously. At the same time, the rotating installation design of the support ring is used. When the clamping block completes clamping of the pipe fitting, the limit abutment between the limit groove and the limit column can be used to drive the support ring to rotate synchronously after the clamping is completed, realizing the function of first clamping and positioning and then rotating and fixing the equipment, effectively reducing the gap between the welding objects and improving the precise control accuracy of the equipment.

[0016] 2. Then, by providing a directional shaft, a connecting plate and a clamping block with a mutually movable sleeve design, after the clamping block abuts against the outer surface of the pipe fitting, it can rotate around the axis of the directional shaft while revolving around the axis of the pipe fitting. Driven by the power mechanism, the limit ring uses the limit groove to limit the limit column and drives the limit column, the connecting plate, the directional shaft and the clamping block to apply pressure to the outer surface of the pipe fitting. Subsequently, the guiding effect of the telescopic column and the accommodating column is utilized to drive the accommodating column and the supporting ring to rotate synchronously as a whole, so that the clamping block and the outer surface of the pipe fitting rotate synchronously when in contact, and the joints of the two contacting pipe fittings are kept in a state of synchronous rotation. Synchronous centering and synchronous deviation correction operations can also be performed, which greatly improves the welding quality.

[0017] 3. Finally, the two sets of sliders are driven by the lead screw to move in the same direction and synchronously, and the two sets of extrusion mechanisms are used to squeeze and abut the non-contact ends of the two pipe fittings respectively. The synchronous extrusion displacement of the two sets of hydraulic rods, fixed seats, turntables and buffer plates is used to enable the joints of the two pipe fittings to be welded to generate extrusion force and maintain stability after clamping and fixing. The two sets of synchronous extrusion mechanisms can automatically and accurately locate the welding parts of the pipe fittings, and can also assist the directional shaft and the clamping block to perform secondary abutment positioning on the pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front perspective schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a front cutaway schematic diagram of the structure of the present invention;

[0020] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure at center A;

[0021] Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0022] Figure 5 It is a side cutaway schematic diagram of the structure of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the clamping module of the present invention;

[0024] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at C in the middle;

[0025] Figure 8 It is a schematic diagram of the separation of the accommodation column, the telescopic column, the spring, the connecting plate, the reinforcing block, the directional shaft, the clamping block, the buffer cylinder, the limiting ring and the limiting column of the present invention;

[0026] Fig. 9 It is a partial top view cutaway schematic diagram of the structure of the present invention.

[0027] In the figure: 1. workbench; 2. working groove; 3. lead screw; 4. slider; 5. hydraulic rod 1; 6. fixed seat; 7. turntable; 8. buffer plate; 9. pipe fitting; 10. base; 11. support cylinder; 12. protective cover; 13. motor; 14. gear 1; 15. gear 2; 16. welding mechanism; 161. fixed table; 162. hydraulic rod 2; 163. welding gun; 17. support ring; 18. accommodation column; 19. telescopic column; 20. spring; 21. connecting plate; 22. reinforcement block; 23. directional shaft; 24. clamping block; 25. buffer cylinder; 26. limit ring; 27. limit groove; 28. limit column. DETAILED DESCRIPTION

[0028] 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.

[0029] like Figures 1 to 9 As shown, an embodiment of the present invention provides a welding device with a precise control function, which is used for welding a pipe fitting 9, and includes a workbench 1, a base 10 is installed on the top of the workbench 1, two groups of extrusion mechanisms are arranged on the top of the workbench 1, and are symmetrically distributed on the left and right sides of the base 10, two groups of support cylinders 11 are fixedly installed on the top of the base 10, a power mechanism is installed at the bottom of the support cylinder 11, and welding mechanisms 16 are installed on the tops of the two groups of support cylinders 11;

[0030] A support ring 17 is rotatably mounted on the inner wall of the support cylinder 11, and three groups of equiangularly distributed accommodation columns 18 are fixedly mounted on the inner ring surface of the support ring 17. A telescopic column 19 and a spring 20 are movably sleeved inside the accommodation column 18. A connecting plate 21 is fixedly connected to the outer end of the spring 20. A directional shaft 23 is movably sleeved on the bottom end of the connecting plate 21. A clamping block 24 is movably sleeved on the outer surface of the directional shaft 23. A buffer cylinder 25 is movably sleeved on the outer surface of the clamping block 24. A limiting column 28 is fixedly connected to the side of the connecting plate 21 close to the extrusion mechanism. A limiting ring 26 is movably clamped on the outer surface of the limiting column 28. Three groups of equiangularly distributed limiting grooves 27 are opened on the side of the limiting ring 26. The limiting ring 26 is driven by a power mechanism.

[0031] The device has been redesigned and optimized, and a clamping module with a limit ring 26, a limit column 28, a connecting plate 21, a containing column 18 and a telescopic column 19 as the core is added. When the pipe 9 is located in the three sets of directional shafts 23 and the clamping block 24, the power mechanism is used to transmit power to the limit ring 26 and control it to rotate toward the "closed" side. At this time, the three sets of limit grooves 27 opened on the surface of the limit ring 26 are used to rotate and abut the limit column 28 located therein, and the limit column 28 is driven toward the side close to the pipe 9, thereby The connecting plate 21 and the directional shaft 23 are driven to make synchronous centripetal movement, the pipe 9 is clamped between the three groups of clamping blocks 24, and the centering operation is completed synchronously. At the same time, the rotating installation design of the support ring 17 is utilized. When the clamping block 24 completes the clamping of the pipe 9, the limiting abutment between the limiting groove 27 and the limiting column 28 can be utilized to drive the support ring 17 to rotate synchronously after the clamping is completed, thereby realizing the function of the equipment first clamping and positioning, and then rotating and fixing, effectively reducing the gap between the welding objects and improving the precise control accuracy of the equipment.

[0032] Then, by providing an oriented shaft 23, a connecting plate 21 and a clamping block 24 with a mutually movable sleeve design, after the clamping block 24 abuts against the outer surface of the pipe fitting 9, it can rotate around the axis of the oriented shaft 23 while revolving around the axis of the pipe fitting 9. Driven by the power mechanism, the limit ring 26 uses the limit groove 27 to limit the limit column 28, and drives the limit column 28, the connecting plate 21, the oriented shaft 23 and the clamping block 24 to apply pressure to the outer surface of the pipe fitting 9. Subsequently, the guiding effect of the telescopic column 19 and the accommodating column 18 is utilized to drive the accommodating column 18 and the supporting ring 17 to rotate synchronously as a whole, so that the clamping block 24 and the outer surface of the pipe fitting 9 rotate synchronously when in contact, and the joints of the two contacting pipe fittings 9 are kept in a state of synchronous rotation. Synchronous centering and synchronous deviation correction operations can also be performed, which greatly improves the welding quality.

[0033] Among them, working grooves 2 are opened on the left and right sides of the top of the workbench 1, and a lead screw 3 is rotatably installed in the middle of the workbench 1. The extrusion mechanism includes a slider 4 threadedly installed on the lead screw 3, a hydraulic rod 5 is fixedly installed on the top of the slider 4, and a fixed seat 6 is fixedly installed on the telescopic end of the hydraulic rod 5. A turntable 7 is rotatably installed on the fixed seat 6 toward one side of the support cylinder 11, and the turntable 7 faces a buffer plate 8 of the support cylinder 11. The slider 4 slides horizontally along the inner wall of the working groove 2, and the internal threads of the sliders 4 on the left and right sides are oppositely arranged;

[0034] The design of the hydraulic rod 5 can drive the fixed seat 6, the turntable 7 and the buffer plate 8 to perform lifting and lowering movements, so as to facilitate the loading and unloading of the pipe fittings 9;

[0035] The two sets of sliders 4 are driven by the lead screw 3 to move in the same direction and synchronously, and the two sets of extrusion mechanisms are used to squeeze and abut the non-contact ends of the two pipe fittings 9 respectively. The synchronous extrusion displacement of the two sets of hydraulic rods 5, the fixing seat 6, the turntable 7 and the buffer plate 8 can generate an extrusion force at the joint of the two pipe fittings 9 to be welded, and maintain stability after clamping and fixing. The two sets of synchronous extrusion mechanisms can automatically and accurately locate the welding part of the pipe fitting 9, and can also assist the directional shaft 23 and the clamping block 24 to perform secondary abutment positioning on the pipe fitting 9.

[0036] The welding mechanism 16 includes a fixed platform 161 fixedly mounted on the top of the two groups of support cylinders 11, a hydraulic rod 162 is fixedly mounted on the bottom of the fixed platform 161, a welding gun 163 is fixedly mounted on the telescopic end of the hydraulic rod 162, and the axis of the welding gun 163 intersects with the axis of the pipe 9;

[0037] The height of the welding gun 163 can be freely adjusted under the telescopic drive of the hydraulic rod 162 to adapt to pipes 9 of different diameters.

[0038] The power mechanism includes a protective cover 12 fixedly mounted on the bottom of the support tube 11, a motor 13 is mounted on the right side of the right protective cover 12, the output shaft of the motor 13 passes through the two sets of protective covers 12, and two sets of gears 14 are fixedly mounted on the inner wall of the protective cover 12, the outer surface of the gear 14 is meshed with the gear 2 15, and the gear 2 15 is fixedly mounted on the outer surface of the limit ring 26;

[0039] The motor 13 can drive the gear 14 to rotate, and transmit the power to the limit ring 26 through the gear 2 15. The limit ring 26 can drive the limit column 28 to move along the radial direction of the support tube 11 by rotating, and drive the connecting plate 21, the directional shaft 23 and the clamping block 24 to synchronously adapt and clamp the pipes 9 of different sizes.

[0040] The pipe fittings 9 are arranged in two groups and are mounted against the outer surfaces of the three groups of clamping blocks 24. The contact ends of the two groups of pipe fittings 9 are abutted against each other, and the other ends thereof are abutted against the buffer plate 8.

[0041] There are two pipes 9 to be welded, and the welding position is the joint where the two pipes 9 are in contact. The clamping block 24 rotates and abuts against the outer surface of the pipe 9 to provide rigid support, clamping and synchronous rotation pressure therefor.

[0042] The limiting groove 27 is designed in a fan shape, and the center of the limiting groove 27 is offset from the center of the limiting ring 26, and the outer surface of the limiting column 28 is movably engaged with the inner wall of the limiting groove 27;

[0043] The center of the limiting groove 27 is offset from the center of the pipe 9. This design enables the limiting ring 26 to drive the limiting post 28 to rotate by utilizing its offset design to drive the limiting post 28 to move in the radial direction of the limiting ring 26 instead of being fixed at a certain radial position.

[0044] Among them, a reinforcement block 22 is fixedly installed on one side of the connecting plate 21, and the outer end of the telescopic column 19 is fixedly connected to the connecting plate 21 and the reinforcement block 22, and the shape of the reinforcement block 22 is a right triangle;

[0045] A reinforcing block 22 is fixedly connected to one side of the connecting plate 21 , and its end and the reinforcing block 22 are connected to the telescopic column 19 . The triangular design of the reinforcing block 22 can increase its stability.

[0046] The two ends of the spring 20 are elastically connected to the accommodating column 18 and the telescopic column 19 respectively, and the axis of the telescopic column 19 always points to the axis of the limiting ring 26;

[0047] The spring 20 is responsible for connecting the telescopic column 19 so that the telescopic column 19 remains in a state of elastic support by the accommodating column 18. When the limiting ring 26 drives the connecting plate 21 and the telescopic column 19 to move along the axis of the accommodating column 18 through the limiting groove 27 and the limiting column 28, the spring 20 is compressed and arranged inside the accommodating column 18 to generate a rebound force that can keep the limiting column 28 able to fit and abut against the inner wall of the limiting groove 27 under the action of force, thereby reducing the possibility of loosening.

[0048] Among them, one end of the clamping block 24 is designed in a conical shape, and a groove is opened on the outer surface of the clamping block 24. The buffer cylinder 25 is movably sleeved in the groove. The buffer cylinder 25 and the buffer plate 8 are both made of hard rubber.

[0049] The tapered end of the clamping block 24 is designed to be able to contact and adapt with the moving end of the pipe 9. The groove on the outer surface of the clamping block 24 is used to install the buffer cylinder 25. When the pipe 9 abuts against the outer surface of the clamping block 24, a flexible friction force is generated by squeezing the buffer cylinder 25, which not only ensures the normal clamping state of the pipe 9, but also prevents rigid squeezing damage to the pipe 9 in the future.

[0050] Working principle:

[0051] First, start the hydraulic rod 15 and drive the fixed seat 6, the rotating disk 7 and the buffer plate 8 downward, insert the pipe 9 from the upper part of the rotating disk 7 into the support tube 11 along the axis of the support tube 11, so that one end of the pipe 9 enters the support tube 11 and abuts against the conical surface of the outer surface of the clamping block 24, start the motor 13, and drive the gear 14, the gear 2 15 and the limit ring 26 to rotate, as shown in FIG. Figure 5 As shown, the limit ring 26 rotates clockwise, and the limit groove 27 opened on its surface drives the limit column 28 to move toward the side away from the axis of the support tube 11, driving the telescopic column 19, the connecting plate 21, the reinforcing block 22 and the directional shaft 23 to move accordingly, so that the three groups of directional shafts 23 and the clamping blocks 24 located in the support tube 11 are synchronously dispersed, so that the pipe 9 can pass between the clamping blocks 24 and abut against the outer surfaces of the buffer tube 25 and the clamping block 24. Then, the motor 13 is reversed to reverse the direction of the limit ring 26 from "open" to "closed", that is, counterclockwise. At this time, the limit column 28 is driven by the limit groove 27, and drives the telescopic column 19 along the axis of the accommodating column 18 toward the side close to the axis of the support tube 11. The pipe 9 is moved sideways, driving the three groups of directional shafts 23 to synchronously abut, clamp and press the outer surface of the pipe 9. As the limiting ring 26 drives the connecting plate 21, the directional shaft 23 and the clamping block 24 to complete the clamping and centering of the pipe 9, the limiting column 28 is in a limited abutment connection state on the inner wall of the limiting groove 27. At this time, the limiting ring 26 continues to rotate and drives the limiting column 28, the limiting ring 26, the telescopic column 19, the accommodating column 18, the supporting ring 17, the directional shaft 23 and the clamping block 24 to rotate around the axis of the pipe 9. At the same time, the clamping block 24 and the directional shaft 23 also rotate synchronously around the axis of the directional shaft 23 by abutting against the outer surface of the pipe 9 with pressure, and the same operation as above is applied to the pipe 9 on the other side.

[0052] Then, start the hydraulic rod 1 5, and push the fixed seat 6, the rotating disk 7 and the buffer plate 8 upward, so that the axis of the buffer plate 8 is in line with the axis of the pipe 9, start the screw 3 and drive the two groups of extrusion mechanisms to move synchronously and in the same direction, drive the fixed seat 6, the rotating disk 7 and the buffer plate 8 to move toward the other end of the pipe 9, the two groups of extrusion mechanisms synchronously abut and squeeze the other ends of the two pipes 9, the buffer plate 8 and the pipe 9 are squeezed and deformed by force, and the two groups of rotating disks 7 and buffer plates 8 synchronously squeeze the two pipes 9, so that the joint of the two pipes 9 is automatically positioned to the welding point of the welding mechanism 16;

[0053] Finally, start the power mechanism at the bottom of the support tube 11, and drive the limit ring 26 to rotate counterclockwise, driving the pipe fitting 9 to rotate synchronously. At this time, energize the welding gun 163 and drive it by the hydraulic rod 162 to the welding point to weld the joint of the two pipe fittings 9 that perform circular rotation.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] 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. A welding device with a precise control function, the welding device is used for welding pipe fittings (9), comprising a workbench (1), a base (10) being installed on the top of the workbench (1), and characterized in that: Two groups of extrusion mechanisms are arranged on the top of the workbench (1) and are symmetrically distributed on the left and right sides of the base (10); two groups of support cylinders (11) are fixedly installed on the top of the base (10); a power mechanism is installed on the bottom of the support cylinders (11); and welding mechanisms (16) are installed on the tops of the two groups of support cylinders (11); A support ring (17) is rotatably mounted on the inner wall of the support cylinder (11); three groups of accommodating columns (18) with equal angles are fixedly mounted on the inner ring surface of the support ring (17); a telescopic column (19) and a spring (20) are movably sleeved inside the accommodating column (18); the outer end of the spring (20) is fixedly connected to a connecting plate (21); the bottom end of the connecting plate (21) is movably sleeved on a directional shaft (23); a clamping block (24) is movably sleeved on the outer surface of the directional shaft (23); a buffer cylinder (25) is movably sleeved on the outer surface of the clamping block (24); a limiting column (28) is fixedly connected to the side of the connecting plate (21) close to the extrusion mechanism; the outer surface of the limiting column (28) is movably clamped on a limiting ring (26); the limiting ring (26) The side of the workbench (1) is provided with three groups of limit grooves (27) distributed at equal angles, the limit ring (26) is driven by a power mechanism, the left and right sides of the top of the workbench (1) are provided with working grooves (2), and a lead screw (3) is rotatably installed in the middle of the workbench (1), the extrusion mechanism comprises a slider (4) threadedly installed on the lead screw (3), a hydraulic rod (5) is fixedly installed on the top of the slider (4), a fixed seat (6) is fixedly installed on the telescopic end of the hydraulic rod (5), a turntable (7) is rotatably installed on the fixed seat (6) on one side facing the support tube (11), the turntable (7) faces the buffer plate (8) of the support tube (11), the slider (4) slides horizontally along the inner wall of the working groove (2), and the internal threads of the sliders (4) on the left and right sides are arranged oppositely; The welding mechanism (16) comprises a fixed platform (161) fixedly mounted on the top of the two groups of support cylinders (11); a second hydraulic rod (162) is fixedly mounted on the bottom of the fixed platform (161); a welding gun (163) is fixedly mounted on the telescopic end of the second hydraulic rod (162); and the axis of the welding gun (163) intersects with the axis of the pipe fitting (9); The power mechanism comprises a motor (13), the output shaft of the motor (13) being fixedly mounted with two sets of gear 1 (14), the outer surface of the gear 1 (14) being meshingly connected with the gear 2 (15), and the gear 2 (15) being fixedly mounted on the outer surface of the limit ring (26); The limiting groove (27) is designed in a fan shape, and the center of the limiting groove (27) is offset from the center of the limiting ring (26). The outer surface of the limiting column (28) is movably clamped on the inner wall of the limiting groove (27). The two ends of the spring (20) are elastically connected to the accommodating column (18) and the telescopic column (19) respectively. The axis of the telescopic column (19) always points to the axis of the limiting ring (26). One end of the clamping block (24) is designed in a conical shape. The outer surface of the clamping block (24) is provided with a groove, and the buffer cylinder (25) is movably sleeved in the groove.

2. The welding equipment with precise control function according to claim 1, characterized in that: The power mechanism further comprises a protective cover (12) fixedly mounted on the bottom of the support tube (11); the motor (13) is mounted on the right side of the protective cover (12); an output shaft of the motor (13) passes through two sets of protective covers (12); and the gear 1 (14) is located on the inner wall of the protective cover (12).

3. A welding device with precise control function according to claim 2, characterized in that: The pipe fittings (9) are arranged in two groups and are mounted in abutment with the outer surfaces of the three groups of clamping blocks (24). The contact ends of the two groups of pipe fittings (9) are in abutment with each other, and the other ends thereof are in abutment with the buffer plate (8).

4. The welding equipment with precise control function according to claim 3, characterized in that: A reinforcement block (22) is fixedly mounted on one side of the connection plate (21), the outer end of the telescopic column (19) is fixedly connected to the connection plate (21) and the reinforcement block (22), and the reinforcement block (22) is in the shape of a right triangle.

5. The welding equipment with precise control function according to claim 4, characterized in that: The buffer cylinder (25) and the buffer plate (8) are both made of hard rubber.

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