An automated processing equipment for welding pipe parts with integrated material guiding and automatic unloading functions

Abstract

The present invention relates to the field of welding equipment, specifically to an automated processing equipment for welding pipe parts with integrated material guiding and automatic unloading functions, including a support device for support and connection, a unloading device symmetrically arranged on the inner end surface of the support device, and a transmission device for transmission rotatably engaged at the lower end surface of the support device, and a servo motor is fixedly arranged on the side end surface of the support device opposite to the transmission device. The present invention sets a guide device, and when two groups of connecting pipes are accurately positioned, the two groups of guide devices can be driven by the transmission device to perform coaxial centripetal displacement, thereby quickly and accurately aligning and limiting the two groups of connecting pipes, effectively improving the accuracy and stability of limiting and aligning the connecting pipes.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to an automated processing equipment for welding pipe parts with integrated material guiding and automatic material unloading functions. Background Art

[0002] However, the existing pipe parts welding equipment is not convenient for quickly and accurately positioning and aligning the welded pipe parts, thereby reducing the accuracy of subsequent welding of the pipe parts. At the same time, the existing pipe parts welding equipment also has insufficient automation in loading, docking and unloading, which reduces the efficiency of subsequent processing of pipe parts. Therefore, there is a need for an automated processing equipment for pipe parts welding with integrated material guiding and automatic unloading functions to solve the above-mentioned problems. Summary of the invention

[0003] The object of the present invention is to provide an automated processing equipment for welding pipe parts with integrated material guiding and automatic material unloading functions, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automated processing equipment for welding pipe parts with integrated material guiding and automatic unloading functions, including a supporting device for supporting and connecting, a unloading device is symmetrically arranged on the inner end surface of the supporting device, and a transmission device for transmission is rotatably connected to the lower end surface of the supporting device, a servo motor is fixedly arranged on the side end surface of the supporting device opposite to the transmission device, a guide device is slidably connected to the inner end surface of the supporting device through the transmission device, and a connecting pipe fitting is slidably sleeved on the front end surface of the guide device.

[0005] Preferably, the unloading device includes a supporting shell for limiting, the inner end surface of the supporting shell is provided with a unloading chute running through the upper and lower parts, and a supporting slide is fixedly arranged at the center of the lower end surface of the supporting shell, a supporting baffle is symmetrically arranged on the inner end surface of the supporting slide near the bottom, and a guide groove for guiding is arranged on the side end surface of the supporting slide.

[0006] Preferably, the supporting device includes a material guide slot, a positioning slide, an installation card seat, a supporting slot, an installation guide slot, a connecting rotation slot and a sliding material guide plate. The side end surface of the installation card seat is symmetrically provided with a positioning slide, and the inner end surface of the positioning slide is provided with a material guide slot that penetrates inside and outside. The side of the inner end surface of the material guide slot is provided with a supporting slot, and the inner end surface of the positioning slide is provided with a connecting rotation slot. An inclined sliding material guide plate is fixed between the two groups of positioning slides, and the upper end surface of the positioning slide is provided with a mounting guide slot.

[0007] Preferably, the material guiding device includes a guide rotating cylinder, a limiting slide groove, a spring swivel, a positioning clamp and a protective sleeve plate. The front end face of the positioning clamp plate is fixedly provided with a protective sleeve plate, and is fixedly installed with the guide rotating cylinder at the center of the rear end face of the positioning clamp plate. The rear end face of the positioning clamp plate is provided with a spring swivel near the outside of the guide rotating cylinder, and the outer end face of the guide rotating cylinder is provided with a limiting slide groove.

[0008] Preferably, the transmission device comprises a transmission slide groove, a transmission shaft and a connecting guide rod, the side end surface of the connecting guide rod is symmetrically provided with a transmission shaft, and two sets of mutually intersecting transmission slide grooves are provided on the outer end surface of the transmission shaft.

[0009] Preferably, the guide device includes a protective baffle, a connecting cylinder, a limiting slide shaft, a guide clamp, a limiting sleeve, a limiting swivel plate and a limiting shaft body. A limiting slide shaft is fixedly arranged on the side of the upper end surface of the guide clamp, and a protective baffle is arranged on the top end surface of the guide clamp, a connecting cylinder is fixedly installed on the rear end surface of the guide clamp near the protective baffle, and a limiting shaft body is fixedly connected to the front end surface of the connecting cylinder, a limiting sleeve is fixedly arranged on the lower end surface of the guide clamp, and a limiting swivel plate is rotatably engaged with the inner end surface of the guide clamp opposite to the limiting sleeve.

[0010] Preferably, the unloading device is fixedly connected to the inside of the positioning slide by adapting the supporting shell to the mounting guide groove, and the guiding groove is coaxial with the supporting slide cylinder, the inside of the supporting baffle is arranged in an arc shape, and the arc diameter of the supporting baffle is equal to the diameter of the connecting pipe fitting, and the supporting baffle is in contact with the bottom of the connecting pipe fitting.

[0011] Preferably, the supporting slide groove and the guide slide groove are both slidably engaged with the side of the limiting slide shaft, and the limiting slide shaft is slidingly connected to the side wall of the supporting slide groove, the width of the limiting slide groove is equal to the width of the end of the limiting slide shaft, and the limiting slide shaft is slidingly connected to the guide drum through the limiting slide groove.

[0012] Preferably, the spring swivel is fixedly connected to the inside of the connecting groove, the transmission shaft is matched with the limiting sleeve, and the limiting swivel plate is matched with the transmission groove, and the guide device is slidably engaged on the inner end face of the support device through the transmission shaft being matched with the limiting sleeve, and the limiting swivel plate being matched with the transmission groove.

[0013] Preferably, the limiting shaft body includes a circular baffle for support and a clamping shaft fixedly connected to the front center of the circular baffle, and the clamping shaft is slidably connected to the connecting pipe fitting, and the top of the protective baffle is fit-connected to the connecting pipe fitting at the bottom of the mounting guide groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention provides a guide device. When accurately positioning two sets of connecting pipes, the two sets of guide devices can be driven by the transmission device to perform coaxial centripetal displacement, thereby quickly and accurately aligning and limiting the two sets of connecting pipes, effectively improving the accuracy and stability of limiting and aligning the connecting pipes.

[0016] 2. The present invention provides a feeding device, a supporting device and a transmission device. When the connecting pipes are automatically guided, the transmission device can cooperate with the transmission slide groove and the limit turn plate, so that the two groups of guide devices can be cyclically displaced back and forth inside the supporting device, so that the two groups of connecting pipes can be cyclically positioned and welded. At the same time, the guide device can provide sufficient guiding space for feeding through the guiding device while displacing, which effectively improves the degree of automation of the equipment for loading, docking and unloading the connecting pipes, and also improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

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

[0019] Figure 2 It is a side view of the main body of the present invention;

[0020] Figure 3 It is a front view of the main body of the present invention;

[0021] Figure 4 It is a cross-sectional view along the AA front view of the main body of the present invention;

[0022] Figure 5 It is a schematic structural diagram of the feeding device of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the support device of the present invention;

[0024] Figure 7 It is a structural schematic diagram of the material guiding device of the present invention;

[0025] Figure 8 It is a schematic diagram of the transmission structure of the present invention;

[0026] Fig. 9 It is a schematic diagram of the structure of the guide device of the present invention;

[0027] Fig.10 It is a side view of the guide device of the present invention.

[0028] In the figure: 1-feeding device, 2-support device, 3-material guiding device, 4-transmission device, 5-servo motor, 6-guide device, 7-connecting pipe fittings, 11-feeding chute, 12-support shell, 13-support baffle, 14-guide chute, 15-support slide, 21-material guiding chute, 22-positioning slide, 23-mounting card seat, 24-support chute, 25-mounting guide groove, 26-connecting rotating groove, 27-sliding guide plate, 31-guide rotating cylinder, 32-limiting chute, 33-spring swivel, 34-positioning card plate, 35-protective sleeve plate, 41-transmission chute, 42-transmission rotating shaft, 43-connecting guide rod, 61-protective baffle, 62-connecting cylinder, 63-limiting sliding shaft, 64-guide card seat, 65-limiting sliding sleeve, 66-limiting rotating plate, 67-limiting shaft body. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] The present invention is further described below in conjunction with the accompanying drawings.

[0032] Example 1

[0033] See also Figure 1-10An embodiment of the present invention is as follows: an automated processing equipment for welding pipe parts with integrated material guiding and automatic unloading functions, comprising a supporting device 2 for supporting and connecting, a unloading device 1 is symmetrically arranged on the inner end surface of the supporting device 2, and a transmission device 4 for transmission is rotatably connected to the lower end surface of the supporting device 2, a servo motor 5 is fixedly arranged on the side end surface of the supporting device 2 opposite to the transmission device 4, a guide device 6 is slidably connected to the inner end surface of the supporting device 2 through the transmission device 4, and a connecting pipe fitting 7 is slidably sleeved on the front end surface of the guide device 6.

[0034] like Figure 5 The unloading device 1 includes a supporting shell 12 for limiting, and the inner end surface of the supporting shell 12 is provided with an unloading chute 11 from top to bottom, and a supporting slide 15 is fixedly arranged at the center of the lower end surface of the supporting shell 12, and a supporting baffle 13 is symmetrically arranged on the inner end surface of the supporting slide 15 near the bottom, and a guide slide 14 for guiding is arranged on the side end surface of the supporting slide 15.

[0035] like Figure 6 The supporting device 2 includes a material guide chute 21, a positioning slide 22, a mounting card seat 23, a supporting chute 24, a mounting guide groove 25, a connecting rotation groove 26 and a sliding material guide plate 27. The side end surface of the mounting card seat 23 is symmetrically provided with a positioning slide 22, and the inner end surface of the positioning slide 22 is provided with a material guide chute 21 that penetrates inside and outside, a supporting chute 24 is provided on the side of the inner end surface of the material guide chute 21, and a connecting rotation groove 26 is provided on the inner end surface of the positioning slide 22. An inclined sliding material guide plate 27 is fixed between the two groups of positioning slides 22, and a mounting guide groove 25 is provided on the upper end surface of the positioning slide 22.

[0036] like Figure 7 The material guiding device 3 includes a guiding rotating cylinder 31, a limiting sliding groove 32, a spring rotating ring 33, a positioning card plate 34 and a protective sleeve plate 35. The front end surface of the positioning card plate 34 is fixedly provided with a protective sleeve plate 35, and is fixedly installed with the guiding rotating cylinder 31 at the center of the rear end surface of the positioning card plate 34. The rear end surface of the positioning card plate 34 is provided with a spring rotating ring 33 near the outside of the guiding rotating cylinder 31, and the outer end surface of the guiding rotating cylinder 31 is provided with a limiting sliding groove 32.

[0037] like Figure 8 The transmission device 4 includes a transmission slide 41, a transmission shaft 42 and a connecting guide rod 43. The side end surface of the connecting guide rod 43 is symmetrically provided with the transmission shaft 42, and two sets of mutually intersecting transmission slides 41 are opened on the outer end surface of the transmission shaft 42.

[0038] like Fig. 9 and Fig.10The guide device 6 includes a protective baffle 61, a connecting cylinder 62, a limiting slide shaft 63, a guide clamp 64, a limiting sleeve 65, a limiting rotating plate 66 and a limiting shaft body 67. The limiting slide shaft 63 is fixedly arranged on the side of the upper end surface of the guide clamp 64, and the top end surface of the guide clamp 64 is provided with a protective baffle 61, the rear end surface of the guide clamp 64 is fixedly installed with a connecting cylinder 62 near the protective baffle 61, and the front end surface of the connecting cylinder 62 is fixedly connected to the limiting shaft body 67, the lower end surface of the guide clamp 64 is fixedly provided with a limiting sleeve 65, and the inner end surface of the guide clamp 64 is rotatably clamped with a limiting rotating plate 66 opposite to the limiting sleeve 65.

[0039] like Figure 5 and Figure 6 The unloading device 1 is adapted to the mounting guide groove 25 through the support shell 12 and is fixedly connected to the inside of the positioning slide 22, and the guide slide groove 21 is coaxial with the support slide cylinder 15, the support baffle 13 is arranged in an arc shape inside, and the arc diameter of the support baffle 13 is equal to the diameter of the connecting pipe 7, and the support baffle 13 fits the bottom of the connecting pipe 7. When the connecting pipe 7 falls inside the unloading chute 11, the two groups of support baffles 13 can limit the falling connecting pipe 7 to the axial center of the support slide cylinder 15, so that the connecting pipe 7 can be coaxial with the limiting shaft 67, which is convenient for the subsequent guiding of the connecting pipe 7.

[0040] like Figure 5 and Figure 6 The supporting slide groove 24 and the guiding slide groove 14 are both slidably engaged with the side of the limiting slide shaft 63, and the limiting slide shaft 63 is slidingly connected to the side wall of the supporting slide groove 24, the width of the limiting slide groove 32 is equal to the width of the end of the limiting slide shaft 63, and the limiting slide shaft 63 is slidingly connected to the guide rotating cylinder 31 through the limiting slide groove 32, and the guiding slide groove 14 and the supporting slide groove 24 can both guide the limiting slide shaft 63, so as to facilitate the subsequent limiting slide shaft 63 to be accurately positioned inside the limiting slide groove 32, thereby improving the accuracy of positioning and alignment.

[0041] like Figure 6 and Figure 7The spring swivel 33 is fixedly connected to the inside of the connecting groove 26, the transmission shaft 42 is adapted to the limiting sliding sleeve 65, and the limiting rotating plate 66 is adapted to the transmission slide groove 41. The guide device 6 is adapted to the limiting sliding sleeve 65 through the transmission shaft 42, and the limiting rotating plate 66 is adapted to the transmission slide groove 41, and then slidably clamped on the inner end surface of the supporting device 2. The spring swivel 33 has the function of elastic reset, which can facilitate the subsequent limiting sliding shaft 63 and the limiting slide groove 32 to contact the guide constraint. The spring swivel 33 can provide sufficient elastic force for the positioning card plate 34 to reset, which is convenient for the subsequent cyclic rotation operation. The width of the limiting rotating plate 66 is greater than the intersection between the two groups of transmission slide grooves 41, which can facilitate the cyclic displacement of the limiting rotating plate 66 in the transmission slide groove 41, which is convenient for subsequent quick transmission.

[0042] like Fig. 9 The limiting shaft body 67 includes a circular baffle for support and a clamping shaft fixedly connected to the center of the front part of the circular baffle, and the clamping shaft is slidably connected to the connecting pipe fitting 7. The top of the protective baffle 61 is fitted and connected to the connecting pipe fitting 7 at the bottom of the mounting guide groove 25. The clamping shaft at the front of the limiting shaft body 67 can conveniently limit the connecting pipe fitting 7 inside the supporting baffle 13, and can also facilitate the subsequent precise positioning of the two sets of relative connecting pipe fittings 7. The protective baffle 61 is at the rear side of the bottom of the unloading chute 11 in the initial state and does not contact the connecting pipe fitting 7. When the guide device 6 moves forward to the limit inside the supporting device 2, the mounting guide groove 25 can still limit the bottom of the unloading chute 11 to prevent the connecting pipe fitting 7 from falling and being limited.

[0043] Working principle: Before use, the user can position multiple groups of connecting pipes 7 into the inside of the two groups of supporting shells 12 respectively, so as to facilitate the subsequent circulation of introducing the connecting pipes 7 into the inside of the supporting device 2, and then facilitate the subsequent rapid welding operation of the connecting pipes 7. At the same time, the user can position the welding equipment to the upper part of the mounting base 23, so as to facilitate the subsequent welding of the merged connecting pipes 7. When performing welding positioning, the user can start the servo motor 5 through the external control device. At this time, the servo motor 5 can drive the front transmission device 4 to rotate. At the same time, when the transmission device 4 rotates, the transmission device 4 can synchronously drive the two groups of limit rotating plates 66 to rotate through the transmission slide groove 41. When the two groups of limit rotating plates 66 are synchronously displaced toward the middle, the limit rotating plate 66 can drive the limit sliding sleeve 65 and the guide clamping seat 64 to move toward the middle together. When it is in the initial state, the guide clamping seat 64 is located at the external opening of the two groups of positioning slides 22. At this time, the connecting pipe 7 loses the blocking limit of the protective baffle 61, and then falls between the two groups of supporting baffles 13. At this time, the connecting pipe 7 is coaxial with the front of the limit shaft 67. When the guide clamping seat 64 is driven by the limit rotating plate 66 to move forward, the limit shaft 67 can be directly introduced into the interior of the connecting pipe 7 through the clamping shaft, thereby When the limit slide shaft 63 continues to move, the limit slide shaft 63 can drive the guide rotating cylinder 31 to flip 180 degrees through the limit slide groove 32, so that the opening of the protective sleeve 35 faces upward. When the protective sleeve 35 is completely flipped, the connecting cylinder 62 inside the two sets of guide devices 6 can drive the limit shaft body 67 to make the two sets of connecting pipe fittings 7 fit together. At the same time, due to the flipping of the protective sleeve 35, the protective sleeve 35 is located at the installation seat 23. The upper welding equipment has sufficient limiting space, so that the two groups of closed connecting pipes 7 can be quickly welded. After the welding is completed, the transmission shaft 42 can drive the limiting rotating plate 66 to return through the transmission slide groove 41. At this time, the limiting slide shaft 63 can drive the guide rotating cylinder 31 to reset, so that the opening of the protective sleeve 35 is downward. At the same time, the two groups of limiting shafts 67 can synchronously release the limit on the connecting pipe 7 during the process of pushing toward the rear, so that the welded connecting pipe 7 can directly fall to the upper part of the sliding guide plate 27, which is convenient for subsequent users to collect. At this time, the guide device 6 is reset under the drive of the transmission slide groove 41, and the cycle is repeated, which effectively improves the efficiency of the equipment in welding and processing the connecting pipe 7.

[0044] 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 processing equipment for welding pipe parts with integrated material guiding and automatic material unloading functions, comprising a support device (2) for supporting and connecting, a material unloading device (1) is symmetrically arranged on the inner end surface of the support device (2), and a transmission device (4) for transmission is rotatably engaged at the lower end surface of the support device (2), and a servo motor (5) is fixedly arranged on the side end surface of the support device (2) opposite to the transmission device (4), characterized in that: The inner end surface of the support device (2) is slidably connected to a guide device (6) through the transmission device (4), and a connecting pipe (7) is slidably sleeved on the front end surface of the guide device (6); The material discharge device (1) comprises a support shell (12) for limiting position, the inner end surface of the support shell (12) is provided with a material discharge chute (11) running through the upper and lower parts, and a support slide cylinder (15) is fixedly arranged at the center of the lower end surface of the support shell (12), a support baffle (13) is symmetrically arranged on the inner end surface of the support slide cylinder (15) near the bottom, and a guide chute (14) for guiding is arranged on the side end surface of the support slide cylinder (15); The support device (2) comprises a material guide chute (21), a positioning slide seat (22), a mounting clamp seat (23), a support chute (24), a mounting guide groove (25), a connecting groove (26) and a sliding material guide plate (27); the side end surface of the mounting clamp seat (23) is symmetrically provided with a positioning slide seat (22), and the inner end surface of the positioning slide seat (22) is provided with a material guide chute (21) extending through the inside and outside; the side portion of the inner end surface of the material guide chute (21) is provided with a support chute (24), and the inner end surface of the positioning slide seat (22) is provided with a connecting groove (26); an inclined sliding material guide plate (27) is fixed between two groups of the positioning slide seats (22), and the upper end surface of the positioning slide seat (22) is provided with a mounting guide groove (25); The material guiding device (3) comprises a guide rotating cylinder (31), a limiting sliding groove (32), a spring rotating ring (33), a positioning clamping plate (34) and a protective sleeve (35); the front end surface of the positioning clamping plate (34) is fixedly provided with a protective sleeve (35), and is fixedly mounted on the guide rotating cylinder (31) at the center of the rear end surface of the positioning clamping plate (34); the rear end surface of the positioning clamping plate (34) is provided with a spring rotating ring (33) near the outside of the guide rotating cylinder (31); and the outer end surface of the guide rotating cylinder (31) is provided with a limiting sliding groove (32); The transmission device (4) comprises a transmission slide groove (41), a transmission shaft (42) and a connecting guide rod (43); the side end surface of the connecting guide rod (43) is symmetrically provided with the transmission shaft (42), and two sets of mutually intersecting transmission slide grooves (41) are provided on the outer end surface of the transmission shaft (42); The guide device (6) comprises a protective baffle (61), a connecting cylinder (62), a limiting sliding shaft (63), a guide clamp (64), a limiting sliding sleeve (65), a limiting rotating plate (66) and a limiting shaft body (67); a limiting sliding shaft (63) is fixedly arranged on the side of the upper end surface of the guide clamp (64), and a protective baffle (61) is arranged on the top end surface of the guide clamp (64); a connecting cylinder (62) is fixedly installed on the rear end surface of the guide clamp (64) near the protective baffle (61), and a limiting shaft body (67) is fixedly connected to the front end surface of the connecting cylinder (62); a limiting sliding sleeve (65) is fixedly arranged on the lower end surface of the guide clamp (64), and a limiting rotating plate (66) is rotatably engaged with the inner end surface of the guide clamp (64) opposite to the limiting sliding sleeve (65); The material unloading device (1) is fixedly connected to the interior of the positioning slide (22) by matching the supporting shell (12) with the mounting guide groove (25), and the material guide groove (21) is coaxial with the supporting slide cylinder (15), the interior of the supporting baffle (13) is arranged in an arc shape, and the arc diameter of the supporting baffle (13) is equal to the diameter of the connecting pipe (7), and the supporting baffle (13) is in contact with the bottom of the connecting pipe (7); The supporting slide groove (24) and the guiding slide groove (14) are both slidably engaged with the side of the limiting slide shaft (63), and the limiting slide shaft (63) is slidably connected with the side wall of the supporting slide groove (24), the width of the limiting slide groove (32) is equal to the width of the end of the limiting slide shaft (63), and the limiting slide shaft (63) is slidably connected with the guiding rotating drum (31) through the limiting slide groove (32); The spring rotating ring (33) is fixedly connected to the inside of the connecting rotating groove (26), the transmission rotating shaft (42) is matched with the limiting sliding sleeve (65), and the limiting rotating plate (66) is matched with the transmission sliding groove (41), and the guide device (6) is slidably engaged with the inner end surface of the supporting device (2) by matching the transmission rotating shaft (42) with the limiting sliding sleeve (65) and matching the limiting rotating plate (66) with the transmission sliding groove (41); The limiting shaft body (67) comprises a circular baffle for support and a clamping shaft fixedly connected to the front center of the circular baffle, and the clamping shaft is slidably connected to the connecting pipe (7), and the top of the protective baffle (61) is fitted and connected to the connecting pipe (7) at the bottom of the installation guide groove (25); When the transmission device (4) rotates, the transmission device (4) can synchronously drive the two sets of limit rotating plates (66) to move centripetally through the transmission slide groove (41), so that the limit rotating plates (66) can slide back and forth cyclically inside the transmission slide groove (41). When the two sets of limit rotating plates (66) are synchronously displaced toward the middle, the limit rotating plates (66) can drive the limit sliding sleeve (65) and the guide clamping seat (64) to move toward the middle together. When in the initial state, the guide The clamping seat (64) is located at the outer opening of the two sets of positioning slides (22). At this time, the connecting pipe (7) loses the blocking limit of the protective baffle (61) and then falls between the two sets of supporting baffles (13). At this time, the connecting pipe (7) and the front of the limiting shaft (67) are coaxial. When the guide clamping seat (64) moves forward under the drive of the limiting rotating plate (66), the limiting shaft (67) can be directly introduced into the interior of the connecting pipe (7) through the clamping shaft, thereby fixing the connecting pipe (7). The connecting piece (7) completes the sliding limit, and then the limit rotating plate (66) can drive the guide clamp (64) to slide centripetally inside the supporting device (2). At the same time, when sliding, the limit sliding shaft (63) can be directly introduced into the opening of the limit sliding groove (32) through the guide sliding groove (14) and the support sliding groove (24). When the limit sliding shaft (63) continues to move, the limit sliding shaft (63) can drive the guide rotating cylinder (31) to turn over through the limit sliding groove (32). The protective sleeve (35) is rotated 180 degrees so that the opening of the protective sleeve (35) faces upward. When the protective sleeve (35) is completely turned over, the connecting cylinders (62) inside the two sets of guide devices (6) can drive the limiting shafts (67) to make the two sets of connecting pipes (7) fit together. At the same time, due to the turning over of the protective sleeve (35), the welding equipment located on the upper part of the mounting base (23) has sufficient limiting space, so that the two sets of closed connecting pipes (7) can be quickly welded.

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