Turnover device for automatic welding

Abstract

The invention relates to the technical field of welding equipment, and discloses an automatic welding turnover device which comprises a supporting frame, a circular plate, a guide rail pair, a first stepped shaft, a second stepped shaft, a first driving part, a second driving part and a third driving part. The supporting frame comprises two first rotating shafts which can move in the axial direction of the supporting frame and rotate around the axis of the supporting frame. Each guide rail pair comprises a first moving seat and a second moving seat which move in the radial direction of the circular plate. In the using process, two circular pipelines, two semicircular pipelines and a pipeline which is formed by bending a thin plate and provided with only one welding seam in the side wall can be clamped and fixed. In addition, due to the fact that the positions of the multiple first stepped shafts and the multiple second stepped shafts can be adjusted in the radial direction of the circular plate, the pipeline clamping and fixing device can be suitable for clamping and fixing work of pipelines of different sizes. Meanwhile, the multiple first stepped shafts and the multiple second stepped shafts are fixed in the mode of clamping the side wall of the pipeline, and compared with a pressing and fixing mode, when the pipe wall is thin, deformation can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of welding equipment, and in particular to a flipping device for automated welding. Background Art

[0002] The related art (Announcement No.: CN117086561B) discloses a large-scale automated welding flipping device, including a support assembly, a flip assembly, a cleaning assembly and a fixing assembly. The support assembly includes a base plate and two support tables distributed at intervals, and the support table is fixedly connected to the upper part of the base plate and close to one end thereof. The flip assembly is arranged on the upper part of the support assembly, including a flip groove, which is a hollow semi-cylindrical structure, and the flip groove is mounted on two sets of support tables. The cleaning assembly is arranged on the base plate and close to the flip assembly, and the cleaning assembly cleans the welding slag after extending into the flip groove. The fixing assembly is arranged on the upper part of the flip assembly, and is used to confine the workpiece to be welded in the flip groove, including an electric telescopic rod, an arc-shaped support plate and a fixer. The arc-shaped support plate is located above the flip groove, the electric telescopic rod is fixedly arranged at the four corners of the bottom of the arc-shaped support plate, and the fixer is arranged at both ends of the arc-shaped support plate.

[0003] In the process of implementing the above technical solution, it is found that there are at least the following problems in the related technology: This large-scale automatic welding flipping device can fix and drive a semicircular pipe to move through the design of the fixing component, so as to dock with another semicircular pipe. The flipping component design can drive the two semicircular pipes to flip after docking. However, the two semicircular pipes are butted together by compression, so when the pipe wall of the semicircular pipe is thin, it is easy to deform. In addition, due to the limitations of the shape of the arc-shaped support plate and the flipping groove, only two semicircular pipes of a specific size can be fixed. At the same time, the device cannot clamp and fix two circular pipes, and pipes formed by bending thin plates with only one weld on the side wall.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In order to have a basic understanding of some aspects of the disclosed technical solutions, a brief summary is given below. The summary is not a general review, nor is it intended to identify key / important components or describe the scope of protection of these technical solutions, but rather serves as a preface to the detailed description that follows.

[0006] The present technical solution provides a flipping device for automated welding to solve the problems raised in the above-mentioned background technology.

[0007] In some technical schemes, the flip device for automated welding comprises: a support frame, the support frame comprises two first rotating shafts coaxially distributed, the two first rotating shafts can move along their axial direction and rotate around their axis; circular plates, respectively installed at opposite ends of the two first rotating shafts, and respectively coaxially distributed with the two first rotating shafts, each of the circular plates comprises a plurality of strip holes opened along its radial direction and evenly distributed around its center; guide rail pairs, respectively installed at opposite surfaces of the two circular plates, and evenly distributed around the center of the circular plates, the number of the guide rail pairs is an even number greater than or equal to six, each of the guide rail pairs comprises a first movable seat and a second movable seat moving along the radial direction of the circular plate, and the plurality of the first movable seats are close to the center of the circular plate relative to the plurality of the second movable seats; a first stepped shaft, respectively installed at a plurality of The first movable seat; the second stepped shaft, which is slidably arranged in the plurality of second movable seats along the axial direction of the first rotating shaft, and the plurality of second stepped shafts respectively pass through the plurality of strip holes; the first driving member, which is respectively installed on the two circular plates, is configured to drive the plurality of first movable seats on each of the circular plates to move; the second driving member, which is respectively installed on the two circular plates, is configured to drive the plurality of second movable seats adjacent to one half and the plurality of second movable seats adjacent to the other half on each of the circular plates to move respectively; the third driving member, which is respectively installed on the two circular plates, is configured to drive the plurality of second stepped shafts connected to the plurality of second movable seats adjacent to the one half and the plurality of second movable seats adjacent to the other half to slide respectively; wherein, under the drive of the first driving member and the second driving member, the first stepped shaft and the second stepped shaft installed on the same guide rail pair are abutted against each other.

[0008] Optionally, each of the first driving members includes: a first nut, respectively mounted on a plurality of the first moving seats; a first screw rod, respectively mounted on a plurality of the first nuts, and respectively passing through a plurality of the second moving seats; a first spur gear, respectively mounted on a plurality of the first screw rods; a second rotating shaft, rotatably mounted on the circular plate along the radial direction of the circular plate, and respectively adjacent to the plurality of the first screw rods; a second spur gear, respectively mounted on a plurality of the second rotating shafts, and respectively meshed with the plurality of the first spur gears; a first bevel gear, respectively mounted on a plurality of the second rotating shafts; a first cylinder, rotatably mounted on the first rotating shaft; a second bevel gear, mounted on the outer wall of the first cylinder, and respectively meshed with the plurality of the first bevel gears; wherein the second bevel gear is controlled to rotate so that the plurality of the first moving seats move along the radial direction of the circular plate.

[0009] Optionally, each of the first driving members further includes: a first motor mounted on the circular plate; and a third bevel gear mounted on the rotating end of the first motor and meshing with the second bevel gear.

[0010] Optionally, each of the second driving members includes: a second nut, respectively mounted on the plurality of second moving seats; a second screw rod, respectively mounted on the plurality of second nuts and respectively passing through the plurality of first moving seats; a third spur gear, respectively mounted on the plurality of second screw rods; a first hollow shaft, respectively rotatably mounted on the plurality of second rotating shafts; a fourth spur gear, respectively mounted on the plurality of first hollow shafts and respectively meshing with the plurality of third spur gears; a fourth bevel gear, respectively mounted on the plurality of first hollow shafts opposite to the plurality of second moving seats adjacent to the half; a second cylinder, rotatably mounted on the first cylinder; a fifth bevel gear is mounted on the outer wall of the second cylinder and meshed with the plurality of fourth bevel gears; a sixth bevel gear is respectively mounted on the plurality of first hollow shafts opposite to the plurality of second movable seats adjacent to the other half; a third cylinder is rotatably mounted on the second cylinder; a seventh bevel gear is mounted on the outer wall of the third cylinder and meshed with the plurality of sixth bevel gears; wherein the fifth bevel gear and the seventh bevel gear are controlled to rotate respectively so that the plurality of second movable seats adjacent to the one half and the other half slide respectively.

[0011] Optionally, each of the second driving members further includes: a second motor mounted on the circular plate; and an eighth bevel gear mounted on the rotating end of the second motor and meshing with the fifth bevel gear.

[0012] Optionally, each of the second driving members further includes: a third motor mounted on the circular plate; and a ninth bevel gear mounted on the rotating end of the third motor and meshing with the seventh bevel gear.

[0013] Optionally, each of the third driving members includes: a fan-shaped plate, which is respectively opposite to the multiple second movable seats adjacent to the half and the other half; an electric push rod, which is respectively installed between the two fan-shaped plates and the circular plate along the radial direction of the first rotating shaft; a movable plate, which is respectively connected to the multiple second step shafts; a first slider, which is respectively connected to the multiple movable plates; a first guide rail, which is respectively installed on the multiple first sliders and respectively installed on the two fan-shaped plates; wherein, under the guiding and supporting action of the multiple first guide rails and the multiple first sliders, the multiple movable plates move along the radial direction of the circular plate.

[0014] Optionally, the support frame also includes: a support plate for abutting against the bottom surface; a second guide rail installed on the support plate along the axial direction of the first rotating shaft; a second slider installed on the second guide rail and located on both sides of the second guide rail along the axial direction of the first rotating shaft; a first movable arm installed on the second slider on either side; a second movable arm installed on the second slider on the other side, and the two first rotating shafts are rotatably installed on the first movable arm and the second movable arm respectively; a third nut installed on the first movable arm; a third screw rod installed on the third nut and passing through the second movable arm; a fourth nut installed on the second movable arm; a fourth screw rod installed on the A rod is installed on the fourth nut and passes through the first movable arm; a second hollow shaft is rotatably installed in the first movable arm and the second movable arm along the axial direction of the first rotating shaft; a spline sleeve is installed on the two second hollow shafts respectively; a spline shaft is installed on the two spline sleeves; a first belt gear is installed on the two second hollow shafts respectively; a second belt gear is installed on the two first rotating shafts respectively; a toothed belt is respectively mounted between the two first belt gears and the two second belt gears; wherein the third screw rod, the fourth screw rod and the spline shaft are controlled to rotate so that the two first rotating shafts can move along their axial directions and rotate around their axes.

[0015] Optionally, the support frame also includes: a fourth motor, which is respectively opposite to the third screw rod, the fourth screw rod and the spline shaft; and a coupling, which is respectively installed between the third screw rod, the fourth screw rod and the spline shaft and the rotating ends of the three fourth motors.

[0016] Optionally, each of the guide rail pairs also includes: a third slider, respectively connected to the plurality of the first movable seats and the second movable seats; a third guide rail, installed on the plurality of the third sliders, and each connected to the circular plate; wherein, under the guiding and supporting action of the third guide rail and the third slider, the first movable seat and the second movable seat move along the radial direction of the circular plate.

[0017] The present invention provides an automatic welding flipping device, which can achieve the following technical effects: When clamping and fixing two circular pipes, the two circular pipes are lifted to two circular plates respectively, and then the two circular plates can be moved under the drive of the two first rotating shafts, thereby driving the multiple first step shafts thereon to be inserted into the interior of the two circular pipes respectively, and the multiple second step shafts thereon to surround the two circular pipes. Then, the first driving member and the second driving member are controlled to work, so that the multiple first step shafts and the multiple second step shafts can be respectively against the inner wall and the outer wall of the two circular pipes, thereby completing the fixing of the two circular pipes. After the fixing is completed, the two circular plates are moved toward each other under the drive of the two first rotating shafts, and the two circular pipes can be docked, and then welding can be performed. During the welding process, the two circular plates can be rotated under the drive of the two first rotating shafts, and finally the two circular pipes are turned over.

[0018] When clamping and fixing a pipe formed by bending a thin plate and having only one weld on its side wall, after lifting the pipe with only one weld on its side wall between two circular plates, the two circular plates can move toward each other under the drive of the two first rotating shafts, thereby driving the multiple first step shafts thereon to be inserted into the interior of the two semicircular pipes respectively, and the multiple second step shafts thereon to surround the two semicircular pipes. Then, the first driving member and the second driving member are controlled to work, so that the multiple first step shafts and the multiple second step shafts can be respectively abutted against the inner wall and the outer wall of the two semicircular pipes, thereby completing the fixing of the pipe with only one weld on its side wall, and then welding is performed. During the welding process, the two circular plates can rotate under the drive of the two first rotating shafts, and finally drive the pipe with only one weld on its side wall to flip.

[0019] When clamping and fixing two semicircular pipes, the two circular plates can move toward each other under the drive of the two first rotating shafts, so that the multiple first step shafts on the two circular plates are adjusted to a suitable spacing. Then the first driving member is controlled to work, so that the multiple first step shafts on the two circular plates can be brought closer or separated from each other and adjusted to a position matching the inner wall of the semicircular pipe. Then the third driving member is controlled to work, so that the multiple second step shafts on the two circular plates can slide in the opposite direction, so that a semicircular pipe can be suspended to the top of the multiple first step shafts. After the suspension is completed, the third driving member is controlled to work again to reset half of the adjacent multiple second step shafts, and the second driving member is controlled to work to move half of the adjacent second step shafts, so that the clamping and fixing of a semicircular pipe can be completed. Then, the two circular plates can rotate under the drive of the two first rotating shafts, thereby driving the fixed semicircular pipe to flip to the bottom of the multiple first step shafts. After the flip is completed, the other semicircular pipe can be suspended again to the top of the multiple first step shafts. After the hoisting is completed, the third driving member is controlled to work again to reset the other half of the adjacent multiple second step shafts, and the second driving member is controlled to work to move the other half of the adjacent second step shafts, so that the other semicircular pipe can be clamped, fixed and docked, and then welded. During the welding process, the two circular plates can rotate under the drive of the two first rotating shafts, and finally drive the two semicircular pipes to flip.

[0020] Therefore, two circular pipes, two semicircular pipes, and pipes formed by bending a thin plate and having only one weld seam on the side wall can be clamped and fixed. In addition, since the positions of the multiple first step shafts and the multiple second step shafts can be adjusted along the radial direction of the circular plate, it is suitable for clamping and fixing pipes of different sizes. At the same time, the multiple first step shafts and the multiple second step shafts are fixed by clamping the side wall of the pipe. Compared with the method of pressing and fixing, deformation can be avoided when the pipe wall is thin, thereby ensuring the welding effect.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, and these exemplary descriptions and drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are considered similar elements, and the drawings do not constitute a scale limitation, and wherein: Figure 1 It is a schematic diagram of the main structure of an automatic welding flip device provided by an embodiment of the present disclosure; Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 3 yes Figure 1A schematic diagram of the enlarged structure at B in the middle; Figure 4 is a schematic diagram of the side view structure of the circular plate; Figure 5 yes Figure 4 Schematic diagram of the enlarged structure at D in the middle; Figure 6 yes Figure 4 Schematic diagram of the enlarged structure at E in the middle; Figure 7 1 is a schematic diagram of the side structure of the fan-shaped plate; Figure 8 yes Figure 7 Schematic diagram of the enlarged structure at G in the middle; Fig. 9 1 is a schematic diagram of the top view of the support plate; Fig.10 yes Fig. 9 Schematic diagram of the enlarged structure at I in the middle.

[0023] Reference numerals: 1: first rotating shaft; 2: circular plate; 3: first moving seat; 4: second moving seat; 5: first stepped shaft; 6: second stepped shaft; 7: first nut; 8: first screw rod; 9: first spur gear; 10: second rotating shaft; 11: second spur gear; 12: first bevel gear; 13: first cylinder; 14: second bevel gear; 15: first motor; 16: second nut; 17: second screw rod; 18: third spur gear; 19: first hollow shaft; 20: fourth spur gear; 21: fourth bevel gear; 22: second cylinder; 23: fifth bevel gear gear; 24: sixth bevel gear; 25: third cylinder; 26: seventh bevel gear; 27: second motor; 28: third motor; 29: polygonal cylinder; 30: sector plate; 31: electric push rod; 32: moving plate; 33: guide shaft; 34: guide cylinder; 35: support plate; 36: first moving arm; 37: second moving arm; 38: third nut; 39: third screw rod; 40: fourth nut; 41: fourth screw rod; 42: second hollow shaft; 43: spline sleeve; 44: spline shaft; 45: toothed belt; 46: fourth motor. DETAILED DESCRIPTION

[0024] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0025] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0026] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have specific directions, or to be constructed and operated in specific directions. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure may be understood according to specific circumstances.

[0027] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0028] Unless otherwise stated, the term "plurality" means two or more.

[0029] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0030] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0032] Combination Figures 1 to 10As shown, the embodiment of the present disclosure provides a flip device for automated welding, including a support frame, a circular plate 2, a guide rail pair, a first stepped shaft 5, a second stepped shaft 6, a first driving member, a second driving member and a third driving member. The support frame is used to abut against the ground, thereby supporting the entire device, including two first rotating shafts 1 distributed coaxially, and both first rotating shafts 1 can move along their axial direction and rotate around their axis. The circular plates 2 are respectively installed at the opposite ends of the two first rotating shafts 1, and are respectively coaxially distributed with the two first rotating shafts 1. Each circular plate 2 includes a plurality of strip holes opened along its radial direction and evenly distributed around its center. The two circular plates 2 move and rotate under the drive of the two first rotating shafts 1. The guide rail pairs are respectively installed on the opposite surfaces of the two circular plates 2, and are evenly distributed around the center of the circular plates 2. The number of guide rail pairs is an even number greater than or equal to six, and each guide rail pair is used to play the role of guiding support to realize the moving function. Each guide rail pair includes a first movable seat 3 and a second movable seat 4 that move along the radial direction of the circular plate 2, and the multiple first movable seats 3 are close to the center of the circular plate 2 relative to the multiple second movable seats 4. The first stepped shaft 5 is respectively installed on the multiple first movable seats 3 along the axial direction of the first rotating shaft 1, and is used to abut against the inner side of a circular, semicircular, or thin plate-bent sidewall pipe with only one weld. The second stepped shaft 6 is slidably arranged in the multiple second movable seats 4 along the axial direction of the first rotating shaft 1, and the multiple second stepped shafts 6 pass through multiple strip holes respectively. The multiple second stepped shafts 6 are used to abut against the outer side of a circular, semicircular, or thin plate-bent sidewall pipe, and can slide relative to the multiple second movable seats 4. The first driving member is respectively installed on the two circular plates 2 to provide a driving force to drive the multiple first movable seats 3 on each circular plate 2 to move, thereby driving the multiple first stepped shafts 5 to move along the radial direction of the circular plate 2. The second driving member is respectively installed on the two circular plates 2, and is used to provide driving force to drive the multiple second moving seats 4 adjacent to one half and the multiple second moving seats 4 adjacent to the other half on each circular plate 2 to move respectively, thereby driving the multiple second stepped shafts 6 connected to the multiple second moving seats adjacent to one half and the multiple second moving seats adjacent to the other half to move respectively along the radial direction of the circular plate 2. The third driving member is respectively installed on the two circular plates 2, and is used to provide driving force to drive the multiple second stepped shafts 6 connected to the multiple second moving seats adjacent to one half and the multiple second moving seats adjacent to the other half to slide respectively. Among them, under the drive of the first driving member and the second driving member, the first stepped shaft 5 and the second stepped shaft 6 installed on the same guide rail pair are abutted to clamp the pipe to be welded.

[0033] When clamping and fixing two circular pipes, the two circular pipes are lifted to two circular plates 2 respectively, and then the two circular plates 2 can be moved under the drive of the two first rotating shafts 1, thereby driving the multiple first step shafts 5 thereon to be inserted into the interior of the two circular pipes respectively, and the multiple second step shafts 6 thereon can surround the two circular pipes. Then, the first driving member and the second driving member are controlled to work, so that the multiple first step shafts 5 and the multiple second step shafts 6 can be respectively against the inner wall and the outer wall of the two circular pipes, thereby completing the fixing of the two circular pipes. After the fixing is completed, the two circular plates 2 move toward each other under the drive of the two first rotating shafts 1, and the two circular pipes can be docked, and then welding can be performed. During the welding process, the two circular plates 2 can rotate under the drive of the two first rotating shafts 1, and finally drive the two circular pipes to flip.

[0034] When clamping and fixing a pipe formed by bending a thin plate and having only one weld on its side wall, after lifting the pipe with only one weld on its side wall between two circular plates 2, the two circular plates 2 can move toward each other under the drive of the two first rotating shafts 1, thereby driving the multiple first step shafts 5 thereon to be inserted into the interior of the two semicircular pipes respectively, and making the multiple second step shafts 6 thereon surround the two semicircular pipes. Then, the first driving member and the second driving member are controlled to work, so that the multiple first step shafts 5 and the multiple second step shafts 6 can be respectively abutted against the inner wall and the outer wall of the two semicircular pipes, thereby completing the fixing of the pipe with only one weld on its side wall, and then welding is performed. During the welding process, the two circular plates 2 can rotate under the drive of the two first rotating shafts 1, and finally drive the pipe with only one weld on its side wall to flip.

[0035] When clamping and fixing two semicircular pipes, the two circular plates 2 can move toward each other under the drive of the two first rotating shafts 1, so that the multiple first step shafts 5 on the two circular plates 2 are adjusted to a suitable spacing. Then the first driving member is controlled to work, so that the multiple first step shafts 5 on the two circular plates 2 can be brought closer or separated, and adjusted to a position matching the inner wall of the semicircular pipe. Then the third driving member is controlled to work, so that the multiple second step shafts 6 on the two circular plates 2 can slide in the opposite direction, so that a semicircular pipe can be suspended to the top of the multiple first step shafts 5. After the suspension is completed, the third driving member is controlled to work again, so that half of the adjacent multiple second step shafts 6 are reset, and the second driving member is controlled to work, so that half of the adjacent second step shafts 6 are moved, and the clamping and fixing of a semicircular pipe can be completed. Then, under the drive of the two first rotating shafts 1, the two circular plates 2 can rotate, and then drive the fixed semicircular pipe to flip to the bottom of the multiple first step shafts 5. After the flip is completed, the other semicircular pipe can be suspended to the top of the multiple first step shafts 5 again. After the hoisting is completed, the third driving member is controlled to work again to reset the other half of the adjacent multiple second step shafts 6, and the second driving member is controlled to work to move the other half of the adjacent second step shafts 6, so that the other semicircular pipe can be clamped, fixed and docked, and then welded. During the welding process, the two circular plates 2 can rotate under the drive of the two first rotating shafts 1, and finally drive the two semicircular pipes to flip.

[0036] Therefore, two circular pipes, two semicircular pipes, and pipes formed by bending a thin plate and having only one weld seam on the side wall can be clamped and fixed. In addition, since the positions of the multiple first step shafts 5 and the multiple second step shafts 6 can be adjusted along the radial direction of the circular plate 2, it is suitable for clamping and fixing pipes of different sizes. At the same time, the multiple first step shafts 5 and the multiple second step shafts 6 are fixed by clamping the side wall of the pipe. Compared with the method of pressing and fixing, deformation can be avoided when the pipe wall is thin, thereby ensuring the welding effect.

[0037] Optionally, combined Figure 4 and Figure 5 As shown, the first linear bearing is also included. The first linear bearings are respectively mounted on the plurality of second stepped shafts 6 and are respectively installed on the plurality of second moving seats 4.

[0038] In the disclosed embodiment, the plurality of first linear bearings are used to reduce the friction between the plurality of second stepped shafts 6 and the plurality of second moving seats 4 and to improve the sliding precision of the plurality of second stepped shafts 6 relative to the plurality of second moving seats 4 .

[0039] Optionally, combined Figures 4 to 6As shown, each first driving member includes a first nut 7, a first screw rod 8, a first spur gear 9, a second rotating shaft 10, a second spur gear 11, a first bevel gear 12, a first cylinder 13 and a second bevel gear 14. The first nut 7 is respectively mounted on a plurality of first moving seats 3, and is respectively used to drive the plurality of first moving seats 3 to move. The first screw rod 8 is respectively mounted on a plurality of first nuts 7, and passes through a plurality of second moving seats 4, respectively, and the plurality of second moving seats 4 respectively include through holes for passing a plurality of first screw rods 8. The first spur gear 9 is respectively mounted on a plurality of first screw rods 8, and is respectively used to drive the plurality of first screw rods 8 to rotate. The second rotating shaft 10 is rotatably mounted on the circular plate 2 along the radial direction of the circular plate 2, and is respectively adjacent to the plurality of first screw rods 8, and each second rotating shaft 10 rotates around its axis. The second spur gears 11 are respectively mounted on the plurality of second rotating shafts 10, and are respectively meshed with the plurality of first spur gears 9 to transmit driving force together. The first bevel gear 12 is respectively mounted on the plurality of second rotating shafts 10, and is respectively used to drive the plurality of second rotating shafts 10 to rotate. The first cylinder 13 is rotatably mounted on the first rotating shaft 1 and can rotate relative to the first rotating shaft 1. The second bevel gear 14 is mounted on the outer wall of the first cylinder 13 and is respectively engaged with the plurality of first bevel gears 12 to transmit the driving force together and change the direction of the force. The second bevel gear 14 is controlled to rotate so that the plurality of first moving seats 3 move along the radial direction of the circular plate 2.

[0040] In the disclosed embodiment, after the second bevel gear 14 is controlled to rotate under the drive of external force, the multiple first bevel gears 12 can be driven to rotate through the meshing action between the teeth. Then the multiple second rotating shafts 10 are driven to rotate, and then the multiple second spur gears 11 are driven to rotate. Again through the meshing action between the teeth, the multiple first spur gears 9 can be driven to rotate, and then the multiple first screw rods 8 are driven to rotate. Then, under the guiding support of multiple guide rail pairs, the multiple first nuts 7 can drive the multiple first moving seats 3 to move along the radial direction of the circular plate 2, and finally make the multiple first stepped shafts 5 approach or separate from each other. Therefore, by driving the second bevel gear 14 to rotate, the function of simultaneously moving multiple first stepped shafts 5 can be realized, which reduces the number of driving sources used.

[0041] Optionally, combined Figure 4 As shown, each first driving member further includes a first motor 15 and a third bevel gear. The first motor 15 is mounted on the circular plate 2 to provide driving force. The third bevel gear is mounted on the rotating end of the first motor 15 and meshes with the second bevel gear 14 to transmit driving force and change the direction of force.

[0042] In the disclosed embodiment, the first motor 15 is controlled to work, so as to drive the third bevel gear to rotate. Through the meshing action between the teeth, the second bevel gear 14 can be driven to rotate, and finally the position automatic adjustment function of the plurality of first stepped shafts 5 is realized.

[0043] Optionally, combined Figures 4 to 6 As shown, each second driving member includes a second nut 16, a second screw rod 17, a third spur gear 18, a first hollow shaft 19, a fourth spur gear 20, a fourth bevel gear 21, a second cylinder 22, a fifth bevel gear 23, a sixth bevel gear 24, a third cylinder 25 and a seventh bevel gear 26. The second nuts 16 are respectively mounted on a plurality of second moving seats 4, and are respectively used to drive a plurality of second stepped shafts 6 to move. The second screw rods 17 are respectively mounted on a plurality of second nuts 16, and respectively pass through a plurality of first moving seats 3, and the plurality of first moving seats 3 respectively include through holes for passing a plurality of second screw rods 17. The third spur gears 18 are respectively mounted on a plurality of second screw rods 17, and are respectively used to drive a plurality of second screw rods 17 to rotate. The first hollow shafts 19 are respectively rotatably mounted on a plurality of second rotating shafts 10, and can rotate relative to the second rotating shafts 10. The fourth spur gears 20 are respectively mounted on a plurality of first hollow shafts 19, and are respectively meshed with a plurality of third spur gears 18, and are used to transmit driving force. The fourth bevel gear 21 is respectively mounted on the multiple first hollow shafts 19 opposite to the multiple second movable seats 4 adjacent to one half, and is used to drive the multiple first hollow shafts 19 connected to the rotation. The second cylinder 22 is rotatably mounted on the first cylinder 13, and can rotate relative to the first cylinder 13. The fifth bevel gear 23 is mounted on the outer wall of the second cylinder 22 and meshes with the multiple fourth bevel gears 21, and is used to transmit the driving force and change the direction of the force. The sixth bevel gear 24 is respectively mounted on the multiple first hollow shafts 19 opposite to the multiple second movable seats 4 adjacent to the other half, and is used to drive the multiple first hollow shafts 19 connected thereto to rotate. The third cylinder 25 is rotatably mounted on the second cylinder 22, and can rotate relative to the second cylinder 22. The seventh bevel gear 26 is mounted on the outer wall of the third cylinder 25, and meshes with the multiple sixth bevel gears 24, and is used to transmit the driving force and change the direction of the force. The fifth bevel gear 23 and the seventh bevel gear 26 are controlled to rotate respectively, so that half of the adjacent second moving seats 4 and the other half of the adjacent second moving seats 4 slide respectively.

[0044] In the disclosed embodiment, after the fifth bevel gear 23 is controlled to rotate under the drive of external force, the multiple fourth bevel gears 21 can be driven to rotate through the meshing action between teeth. Then the multiple first hollow shafts 19 connected thereto are driven to rotate, and then the corresponding half-adjacent multiple fourth spur gears 20 are driven to rotate. Again, through the meshing action between teeth, the corresponding half-adjacent multiple third spur gears 18 can be driven to rotate, and then the corresponding half-adjacent multiple second screw rods 17 are driven to rotate. Then, under the guiding support of the corresponding half-adjacent multiple guide rail pairs, the corresponding half-adjacent multiple second nuts 16 can drive the corresponding half-adjacent multiple second moving seats 4 to move along the radial direction of the circular plate 2, and finally make the corresponding half-adjacent multiple second stepped shafts 6 approach or separate from each other. After the seventh bevel gear 26 is controlled to rotate under the drive of external force, the multiple sixth bevel gears 24 can be driven to rotate through the meshing action between teeth. Then the multiple first hollow shafts 19 connected thereto are driven to rotate, and then the corresponding other half-adjacent multiple fourth spur gears 20 are driven to rotate. Again, through the meshing action between the teeth, the corresponding other half of the adjacent multiple third spur gears 18 can be driven to rotate, and then the corresponding other half of the adjacent multiple second screw rods 17 can be driven to rotate. Then, under the guidance and support of the corresponding other half of the adjacent multiple guide rail pairs, the corresponding other half of the adjacent multiple second nuts 16 can drive the corresponding other half of the adjacent multiple second moving seats 4 to move along the radial direction of the circular plate 2, and finally make the corresponding other half of the adjacent multiple second stepped shafts 6 approach or separate from each other. Therefore, by driving the fifth bevel gear 23 and the seventh bevel gear 26 to rotate respectively, the function of the half of the adjacent multiple second stepped shafts 6 and the other half of the adjacent multiple second stepped shafts 6 approaching or separating from each other can be realized, thereby reducing the number of driving sources used.

[0045] Optionally, combined Figure 4 As shown, each second driving member also includes a second motor 27 and an eighth bevel gear. The second motor 27 is mounted on the circular plate 2 to provide driving force. The eighth bevel gear is mounted on the rotating end of the second motor 27 and meshes with the fifth bevel gear 23 to transmit driving force and change the direction of force.

[0046] In the disclosed embodiment, the second motor 27 is controlled to work, so as to drive the eighth bevel gear to rotate. Through the meshing action between the teeth, the fifth bevel gear 23 can be driven to rotate, and finally the position automatic adjustment function of multiple half-adjacent second stepped shafts 6 is realized.

[0047] Optionally, combined Figure 4 As shown, each second driving member further includes a third motor 28 and a ninth bevel gear. The third motor 28 is mounted on the circular plate 2 to provide driving force. The ninth bevel gear is mounted on the rotating end of the third motor 28 and meshes with the seventh bevel gear 26 to transmit driving force and change the direction of force.

[0048] In the disclosed embodiment, the third motor 28 is controlled to work, so as to drive the ninth bevel gear to rotate. Through the meshing action between the teeth, the seventh bevel gear 26 can be driven to rotate, and finally the position automatic adjustment function of the second stepped shafts 6 adjacent to each other is realized.

[0049] Optionally, combined Figure 4 As shown, the first motor 15, the second motor 27 and the third motor 28 all include long-axis reduction motors.

[0050] In the disclosed embodiment, the first motor 15, the second motor 27 and the third motor 28 all adopt the design of long-axis reduction motors to replace the design of externally extending the shaft at the rotating end of the ordinary reduction motor.

[0051] Optionally, combined Figure 4 and Figure 6 As shown, each second driving member further includes a first seat bearing which is respectively mounted on the rotating ends of the first motor 15 , the second motor 27 and the third motor 28 , as well as a plurality of second rotating shafts 10 and a plurality of first hollow shafts 19 , and is mounted on the circular plate 2 .

[0052] In the disclosed embodiment, the first seat bearing is used for the first rotating shafts 1 and the first hollow shafts 19 to rotate around their axes and ensure the rotation accuracy of the first rotating shafts 1 and the first hollow shafts 19. At the same time, the first seat bearing is also used to reduce the force on the rotating ends of the first motor 15, the second motor 27 and the third motor 28, and reduce the vibration of the rotating ends of the first motor 15, the second motor 27 and the third motor 28.

[0053] Optionally, combined Figure 4 As shown, each second driving member further includes a polygonal cylinder 29 and a second seat bearing. The polygonal cylinder 29 is mounted on the circular plate 2 and surrounds the plurality of first screw rods 8 and the second screw rods 17. The second seat bearings are respectively sleeved on the plurality of first screw rods 8 and the plurality of second screw rods 17, and are both mounted on the inner side of the polygonal cylinder 29.

[0054] In the disclosed embodiment, the polygonal cylinder 29 is mounted on the circular plate 2 to support and install a plurality of second seat bearings. The plurality of second seat bearings are used to support and install a plurality of first screw rods 8 and a plurality of second screw rods 17 to improve the rotation accuracy of the plurality of first screw rods 8 and a plurality of second screw rods 17.

[0055] Optionally, combined Figure 1 and Figure 2 As shown, the first bearing is also included. The first bearing is installed between the first rotating shaft 1 and the first cylinder 13, the first cylinder 13 and the second cylinder 22, and the second cylinder 22 and the third cylinder 25 respectively.

[0056] In the embodiment of the present disclosure, multiple first bearings are used to enable the first rotating shaft 1, the first cylinder 13, the second cylinder 22 and the third cylinder 25 to rotate relative to each other, reduce the friction between the first rotating shaft 1, the first cylinder 13, the second cylinder 22 and the third cylinder 25, and ensure the rotation accuracy between the first rotating shaft 1, the first cylinder 13, the second cylinder 22 and the third cylinder 25.

[0057] Optionally, combined Figure 1 , Figure 7 and Figure 8 As shown, each third driving member includes a fan-shaped plate 30, an electric push rod 31, a moving plate 32, a first slider and a first guide rail. The fan-shaped plate 30 is respectively opposite to the multiple second moving seats 4 adjacent to one half and the other half, and the two fan-shaped plates 30 are used to drive the corresponding multiple second step shafts 6 adjacent to one half and the corresponding multiple second step shafts 6 adjacent to the other half to slide respectively. The electric push rod 31 is respectively installed between the two fan-shaped plates 30 and the circular plate 2 along the radial direction of the first rotating shaft 1 to provide driving force. The moving plates 32 are respectively connected to the multiple second step shafts 6 and move synchronously with the multiple second step shafts 6. The first slider is respectively connected to the multiple moving plates 32. The first guide rails are respectively installed on the multiple first sliders and are respectively installed on the two fan-shaped plates 30. The multiple first guide rails and the multiple first sliders play the role of guiding support together. Among them, under the guiding support of the multiple first guide rails and the multiple first sliders, the multiple moving plates 32 move along the radial direction of the circular plate 2.

[0058] In the disclosed embodiment, two electric push rods 31 are controlled to work respectively, so that two sector plates 30 can be driven to move respectively. Finally, multiple second step shafts 6 adjacent to one half of the corresponding one slide at the same time, or multiple second step shafts 6 adjacent to the other half slide at the same time. Moreover, through the design of multiple first guide rails and multiple first sliders, multiple moving plates 32 can move with the movement of multiple second supports. Thus, interference is avoided, so that multiple second step shafts 6 can move along the radial direction of the circular plate 2 and along the axial direction of the first rotating shaft 1.

[0059] Optionally, combined Figure 1 As shown, each third driving member further includes a guide shaft 33, a guide cylinder 34 and a second linear bearing. The guide shaft 33 is connected to the two sector plates 30 along the axial direction of the first rotating shaft 1. The guide cylinders 34 are respectively sleeved on the guide shafts 33 and are installed on the circular plate 2. The second linear bearing is respectively sleeved on each guide shaft 33 and is respectively installed at the port of each guide cylinder 34.

[0060] In the embodiment disclosed herein, the plurality of guide shafts 33 and the plurality of guide cylinders 34 are used to serve as guide supports to reduce the radial force received by the moving ends of the two electric push rods 31 and to improve the stability of the two sector plates 30 during movement. The plurality of second linear bearings are used to reduce the friction between the plurality of guide shafts 33 and the plurality of guide cylinders 34, thereby reducing wear and tear between the parts.

[0061] Optionally, combined Figure 1 , Figure 3 , Fig. 9 and Fig.10As shown, the support frame also includes a support plate 35, a second guide rail, a second slider, a first moving arm 36, a second moving arm 37, a third nut 38, a third screw rod 39, a fourth nut 40, a fourth screw rod 41, a second hollow shaft 42, a spline sleeve 43, a spline shaft 44, a first belt gear, a second belt gear and a toothed belt 45. The support plate 35 is used to abut against the bottom surface, thereby supporting the entire device. The second guide rail is installed on the support plate 35 along the axial direction of the first rotating shaft 1, and is used to support and install the slidable second slider. The second slider is installed on the second guide rail, along the axial direction of the first rotating shaft 1, and is located on both sides of the second guide rail. The second guide rail and the second sliders on both sides play a guiding and supporting role together. The first moving arm 36 is installed on the second slider on either side, and the second moving arm 37 is installed on the second slider on the other side. Under the guiding and supporting action of the second guide rail and the second sliders on both sides, the first moving arm 36 and the second moving arm 37 can move along the axial direction of the first rotating shaft 1 respectively. The two first rotating shafts 1 are rotatably mounted on the first moving arm 36 and the second moving arm 37, respectively, and can perform rotational motion relative to the first moving arm 36 and the second moving arm 37, respectively. The third nut 38 is mounted on the first moving arm 36, and is used to drive the first moving arm 36 to move. The third screw rod 39 is mounted on the third nut 38 and passes through the second moving arm 37, and the second moving arm 37 includes a through hole for passing the third screw rod 39. The fourth nut 40 is mounted on the second moving arm 37, and is used to drive the second moving arm 37 to move. The fourth screw rod 41 is mounted on the fourth nut 40 and passes through the first moving arm 36, and the first moving arm 36 includes a through hole for passing the fourth screw rod 41. The second hollow shaft 42 is rotatably penetrated in the first moving arm 36 and the second moving arm 37 along the axial direction of the first rotating shaft 1, respectively, and is used to support and install the spline sleeve 43, respectively. The spline sleeve 43 is mounted on the two second hollow shafts 42, respectively, and is used to support and install the slidable spline shaft 44. The spline shaft 44 is installed on the two spline sleeves 43, and is used to drive the two spline sleeves 43 to rotate. The first belt gear is installed on the two second hollow shafts 42, and is driven by the two second hollow shafts 42 to rotate. The second belt gear is installed on the two first rotating shafts 1, and is used to drive the two first rotating shafts 1 to rotate. The toothed belt 45 is respectively mounted between the two first belt gears and the two second belt gears, and is used to transmit driving force. Among them, the third screw rod 39, the fourth screw rod 41 and the spline shaft 44 are controlled to rotate so that the two first rotating shafts 1 can move along their axial direction and rotate around their axis.

[0062] In the disclosed embodiment, after the third screw 39 is controlled to rotate under the drive of external force, the third nut 38 can drive the first movable arm 36 to move along the axial direction of the first rotating shaft 1 under the guiding support of the second guide rail and the second slider. After the fourth screw 41 is controlled to rotate under the drive of external force, the fourth nut 40 can drive the second movable arm 37 to move along the axial direction of the first rotating shaft 1 under the guiding support of the second guide rail and the second slider, and finally both the two first rotating shafts 1 can move along their axial directions. After the spline shaft 44 is controlled to rotate under the drive of external force, the two spline sleeves 43 can be driven to rotate. Then the two second hollow shafts 42 are driven to rotate, and then the two first belt gears are driven to rotate. Through the two toothed belts 45, the two second belt gears can be driven to rotate, and finally the function of the two first rotating shafts 1 rotating around their axes is realized.

[0063] Optionally, combined Figure 1 and Fig. 9 As shown, the support frame also includes a fourth motor 46 and a coupling. The fourth motor 46 is respectively opposite to the third screw rod 39, the fourth screw rod 41 and the spline shaft 44, and is respectively used to provide driving force. The coupling is respectively installed between the third screw rod 39, the fourth screw rod 41 and the spline shaft 44 and the rotating ends of the three fourth motors 46, and is respectively used to transmit driving force.

[0064] In the disclosed embodiment, the three fourth motors 46 are controlled to work separately, and through the three couplings, the third screw rod 39, the fourth screw rod 41 and the spline shaft 44 can be driven to rotate respectively, thereby finally realizing the functions of the two first rotating shafts 1 automatically moving along their axial directions and automatically rotating around their axes.

[0065] Optionally, combined Figure 1 As shown, the support frame further includes a first bearing seat and a second bearing. The first bearing seats are respectively mounted on the first moving arm 36 and the second moving arm 37, and are respectively sleeved on the two first rotating shafts 1. The second bearings are respectively mounted between the two first bearing seats and the two first rotating shafts 1.

[0066] In the disclosed embodiment, the first bearing seat is respectively installed on the first movable arm 36 and the second movable arm 37, and is respectively used to support and install the second bearing and to limit the second bearing. The second bearing is respectively used to support and install the two rotatable first rotating shafts 1, reduce the friction force on the two first rotating shafts 1, and improve the rotation accuracy of the two first rotating shafts 1.

[0067] Optionally, combined Figure 1 and Figure 3 As shown, the support frame further includes a second bearing seat and a third bearing. The second bearing seats are respectively mounted on the first moving arm 36 and the second moving arm 37, and are respectively sleeved on the two second hollow shafts 42. The third bearings are respectively mounted between the two second bearing seats and the two second hollow shafts 42.

[0068] In the embodiment disclosed in the present invention, the second bearing seat is respectively installed after the first movable arm 36 and the second movable arm 37, and is respectively used to support and install the third bearing and limit the third bearing. The third bearing is respectively used to support and install two rotatable second hollow shafts 42, reduce the friction force on the two second hollow shafts 42, and improve the rotation accuracy of the two second hollow shafts 42.

[0069] Optionally, combined Figure 1 and Fig. 9 As shown, the support frame further includes a third seat bearing. The third seat bearing is respectively mounted on the third screw rod 39 and the fourth screw rod 41, and both are mounted on the support plate 35.

[0070] In the disclosed embodiment, the third seat bearing is used to improve the stability of the third screw rod 39 and the fourth screw rod 41 during rotation, and to improve the rotation accuracy of the third screw rod 39 and the fourth screw rod 41 .

[0071] Optionally, combined Figures 4 to 6 As shown, each guide rail pair further includes a third slider and a third guide rail. The third slider is respectively connected to a plurality of first moving seats 3 and a second moving seat 4, and is respectively used to support and install the third guide rail. The third guide rail is installed on a plurality of third sliders, and is all connected to the circular plate 2, and together plays the role of guiding support. Among them, under the guiding support of the third guide rail and the third slider, the first moving seat 3 and the second moving seat 4 move along the radial direction of the circular plate 2.

[0072] In the disclosed embodiment, the plurality of third guide rails and the plurality of third sliders together serve as guide supports, so that the plurality of first moving seats 3 and the plurality of second moving seats 4 move along the radial direction of the circular plate 2 .

[0073] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A turning device for automated welding, characterized in that: include: A support frame, the support frame comprising two first rotating shafts distributed coaxially, the two first rotating shafts can move along their axial directions and rotate around their axes; Circular plates are respectively installed at opposite ends of the two first rotating shafts and are respectively coaxially distributed with the two first rotating shafts, and each of the circular plates includes a plurality of strip holes opened along its radial direction and evenly distributed around its center; Guide rail pairs are respectively installed on opposite surfaces of the two circular plates and are evenly distributed around the center of the circular plates. The number of the guide rail pairs is an even number greater than or equal to six. Each of the guide rail pairs includes a first movable seat and a second movable seat that move along the radial direction of the circular plates. The first movable seats are closer to the center of the circular plates relative to the second movable seats. A first stepped shaft is respectively mounted on the first movable seats along the axial direction of the first rotating shaft; A second stepped shaft is slidably disposed in the plurality of second movable seats along the axial direction of the first rotating shaft, and the plurality of second stepped shafts pass through the plurality of bar-shaped holes respectively; A first driving member, mounted on the two circular plates respectively, and configured to drive the plurality of first moving seats on each of the circular plates to move; A second driving member is respectively mounted on the two circular plates and is configured to drive half of the plurality of adjacent second moving seats and the other half of the plurality of adjacent second moving seats on each circular plate to move respectively; A third driving member, mounted on the two circular plates respectively, and configured to drive the plurality of second stepped shafts connected to the plurality of second moving seats adjacent to the half and the other half to slide respectively; Wherein, under the driving of the first driving member and the second driving member, the first stepped shaft and the second stepped shaft installed on the same guide rail pair are offset against each other.

2. The automatic welding turning device according to claim 1, characterized in that: Each of the first driving members comprises: first nuts, respectively mounted on the first plurality of movable seats; A first screw rod is respectively mounted on the plurality of the first nuts and passes through the plurality of the second moving seats; first spur gears, respectively mounted on the first plurality of lead screws; A second rotating shaft is rotatably mounted on the circular plate along a radial direction of the circular plate and is adjacent to each of the first screw rods; Second spur gears are respectively mounted on the plurality of second rotating shafts and respectively meshed with the plurality of first spur gears; first bevel gears, respectively mounted on the plurality of second rotating shafts; A first cylinder rotatably mounted on the first rotating shaft; a second bevel gear mounted on the outer wall of the first cylinder and respectively meshing with the plurality of first bevel gears; The second bevel gear is controlled to rotate so that the first moving seats move along the radial direction of the circular plate.

3. The automatic welding turning device according to claim 2, characterized in that: Each of the first driving members further comprises: A first motor is mounted on the circular plate; The third bevel gear is installed on the rotating end of the first motor and meshes with the second bevel gear.

4. The automatic welding turning device according to claim 2, characterized in that: Each of the second driving members comprises: second nuts, respectively mounted on the plurality of second movable seats; A second screw rod is respectively mounted on the plurality of the second nuts and passes through the plurality of the first moving seats; third spur gears, respectively mounted on the plurality of second lead screws; A first hollow shaft is rotatably mounted on the plurality of second rotating shafts; fourth spur gears, respectively mounted on the plurality of first hollow shafts and respectively meshing with the plurality of third spur gears; fourth bevel gears, respectively mounted on the plurality of first hollow shafts opposite to the plurality of second movable seats adjacent to the half; A second cylinder rotatably mounted on the first cylinder; a fifth bevel gear, mounted on the outer wall of the second cylinder and meshing with the plurality of fourth bevel gears; a sixth bevel gear, mounted respectively on the plurality of first hollow shafts opposite to the plurality of second movable seats adjacent to the other half; A third cylinder is rotatably mounted on the second cylinder; a seventh bevel gear, mounted on the outer wall of the third cylinder and meshing with the plurality of sixth bevel gears; The fifth bevel gear and the seventh bevel gear are controlled to rotate respectively, so that the plurality of second movable seats adjacent to the half and the plurality of second movable seats adjacent to the other half slide respectively.

5. The automatic welding turning device according to claim 4, characterized in that: Each of the second driving members further comprises: A second motor is mounted on the circular plate; The eighth bevel gear is mounted on the rotating end of the second motor and meshes with the fifth bevel gear.

6. The automatic welding turning device according to claim 4, characterized in that: Each of the second driving members further comprises: a third motor, mounted on the circular plate; The ninth bevel gear is mounted on the rotating end of the third motor and meshes with the seventh bevel gear.

7. The automatic welding turning device according to claim 4, characterized in that: Each of the third driving members comprises: a sector plate, respectively opposite to the plurality of second movable seats adjacent to the half and the other half; An electric push rod is installed between the two sector plates and the circular plate along the radial direction of the first rotating shaft; A movable plate, connected to the plurality of second stepped shafts respectively; A first sliding block is connected to the plurality of movable plates respectively; First guide rails are respectively mounted on the first sliders and respectively mounted on the two sector plates; Wherein, under the guiding and supporting action of the plurality of first guide rails and the plurality of first sliding blocks, the plurality of movable plates move along the radial direction of the circular plate.

8. An automatic welding flipping device according to any one of claims 1 to 7, characterized in that: The support frame also includes: A support plate, used to abut against the bottom surface; A second guide rail is installed on the support plate along the axial direction of the first rotating shaft; A second sliding block is mounted on the second guide rail and is located on both sides of the second guide rail along the axial direction of the first rotating shaft; A first movable arm, mounted on either side of the second slider; A second movable arm is mounted on the second sliding block at the other side, and the two first rotating shafts are rotatably mounted on the first movable arm and the second movable arm respectively; a third nut mounted on the first movable arm; a third screw rod, mounted on the third nut and passing through the second moving arm; a fourth nut, mounted on the second movable arm; a fourth screw rod, mounted on the fourth nut and passing through the first moving arm; A second hollow shaft is rotatably disposed in the first movable arm and the second movable arm along the axial direction of the first rotating shaft; Spline sleeves are respectively mounted on the two second hollow shafts; A spline shaft, mounted on the two spline sleeves; A first gear wheel is mounted on the two second hollow shafts respectively; A second gear wheel is mounted on the two first rotating shafts respectively; A toothed belt, respectively mounted between the two first belt gears and the two second belt gears; The third screw rod, the fourth screw rod and the spline shaft are controlled to rotate so that the two first rotating shafts can move along their axial directions and rotate around their axes.

9. The automatic welding turning device according to claim 8, characterized in that: The support frame also includes: a fourth motor, respectively opposite to the third screw rod, the fourth screw rod and the spline shaft; The couplings are respectively installed between the third screw rod, the fourth screw rod and the spline shaft and the rotating ends of the three fourth motors.

10. An automatic welding flipping device according to any one of claims 1 to 7, characterized in that: Each of the guide rail pairs also includes: A third sliding block is connected to the first moving seats and the second moving seats respectively; A third guide rail, mounted on the plurality of third sliders and connected to the circular plate; Wherein, under the guiding and supporting action of the third guide rail and the third sliding block, the first moving seat and the second moving seat move along the radial direction of the circular plate.

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