A kind of welding forming and clamping equipment for rotating inner and outer ring welds of cylinder

Abstract

The present invention discloses a welding and forming clamping device for rotating inner and outer ring welds of a cylinder, which belongs to the field of welding equipment. The welding and forming clamping device of the present invention comprises a base, a lower clamping mechanism, an upper clamping mechanism, a lifting drive mechanism, a flipping drive mechanism, a flip seat, a rotating drive mechanism and a clamping and positioning mechanism. The present invention utilizes the clamping and positioning mechanism to support the thin-walled cylinder to avoid self-deformation of the cylinder; and cooperates with the upper and lower clamping mechanisms to clamp and fix each product to be welded, and utilizes the ring body to press the roller to ensure the positioning accuracy and clamping stability of the parts, which is beneficial to reduce the deformation of the ring seam welding; in addition, the upper and lower clamping mechanisms are utilized to drive the cylindrical parts to rotate and weld, and the flipping mechanism is utilized to drive the cylindrical parts to flip and weld, and the inner and outer welds at both ends of the cylindrical parts can be welded and formed at one time by clamping, thereby improving the welding production efficiency, and the welding accuracy is greatly improved, effectively reducing the welding defect rate, and improving the economic benefits of the enterprise.

Description

Technical Field

[0001] The invention relates to a welding tooling device, and more specifically to a welding forming clamping device for rotating inner and outer ring welds of a cylinder. Background Art

[0002] Circumferential welding is a welding method that welds two annular workpieces together and is generally used for certain special products. During the welding process, in order to ensure the accurate docking between the two annular workpieces, the two workpieces to be welded need to be positioned before welding. However, since the volume of cylindrical workpieces is generally large and the wall thickness is relatively thin, the cylindrical workpiece as a whole is often not a rigid workpiece to be welded. The two workpieces to be welded are easily deformed during welding and clamping and cannot be accurately aligned, which makes the actual welding operation very difficult.

[0003] Figure 1 A cylindrical part 100 is shown, which is a core component of a chlorate electrolysis device, and a large number of them are required in a set of chlorate electrolysis devices. It is mainly composed of a cylinder 101, a lower ring body 102, an upper ring body 103 and a flange ring 104. The lower ring body 102 and the upper ring body 103 are respectively welded to the two ends of the cylinder 101 to form an outward-turned circular ring structure located at the two ends of the cylinder 101. The flange ring 104 is movably sleeved on the outside of the cylinder 101 to support and fix the cylinder 101 during installation. The upper and lower ring bodies need to be welded inside and outside with the cylinder 101, so there are outer annular seams 105 and inner annular seams 106 that need to be welded at both ends of the cylinder 101. The diameter of this product is relatively large, generally reaching 1000mm, and the requirements for the precision of the circumferential seam welding are relatively high. Since the cylinder 101, the lower ring body 102 and the upper ring body 103 are thin-walled structures with poor rigidity, the requirements for welding and clamping processes are higher, and the welding deformation generated during the welding process is also likely to cause its precision to fail to meet the requirements. In addition, this product not only requires internal and external welding, but also the welding position is located at both ends of the product, which requires flip welding. These characteristics increase the difficulty of welding operations. In addition, the flange ring is pre-set on the outside of the cylinder during welding, and it is in an active state on the cylinder. It also needs to be positioned and fixed during the welding and clamping process to avoid affecting the welding quality. The traditional welding process has low production efficiency, poor welding accuracy, and a high defective rate. The material of this product is titanium-palladium alloy, the material cost is expensive, and the economic losses caused by welding defective products are huge.

[0004] There are many girth welding devices for special products in the prior art, such as a positioning device and welding system for inner girth welding with patent announcement number CN211889678U, a girth welding positioning tool for thin-walled cylindrical workpieces with patent announcement number CN111250825B, and a cylinder girth laser welding workstation and welding method with patent announcement number CN115781020B. These special welding equipment can solve the difficulties of girth welding of specific products, but it is still difficult to achieve the expected effect for the effective clamping and accurate positioning of large-sized thin-walled cylinders. In particular, for the above-mentioned large-sized thin-walled cylindrical parts that require double-sided inner and outer girth welding, how to efficiently and accurately clamp and weld the parts with high precision is still a technical problem that needs to be solved urgently. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the existing girth welding equipment for large-size thin-walled cylinder products, which have poor welding clamping and positioning effects, and provide a rotation welding and forming clamping device for the inner and outer girth welds of the cylinder. By adopting the technical solution of the present invention, the cylindrical parts can be accurately clamped and fixed by using the clamping positioning mechanism, and the thin-walled cylinder can be supported, effectively avoiding the problem of self-deformation of the cylinder; and the upper and lower clamping mechanisms are used to clamp and fix each product to be welded, and the ring body is used to press the roller to further ensure the positioning accuracy and clamping stability of the parts, which is conducive to reducing the girth welding deformation; in addition, the upper and lower clamping mechanisms are used to drive the cylindrical parts to rotate and weld, and the turning mechanism is used to drive the cylindrical parts to turn over and weld. One clamping can realize the one-time welding and forming of the inner and outer welds at both ends of the cylindrical parts, thereby improving the welding production efficiency and the welding accuracy. The clamping deformation of the cylindrical parts with a diameter of 1000mm can be controlled within ±0.15mm, and the overall welding deformation can be controlled within ±0.2mm, effectively reducing the welding defect rate and improving the economic benefits of the enterprise.

[0006] In order to achieve the above object, the technical solution provided by the present invention is:

[0007] The present invention provides a cylindrical inner and outer ring weld rotation welding forming clamping device, comprising a base, a lower clamping mechanism, an upper clamping mechanism and a lifting drive mechanism, and also comprising a flipping drive mechanism, a turning seat, a rotating drive mechanism and a clamping positioning mechanism, wherein the flipping drive mechanism is fixedly arranged on the base, the turning seat is installed on the turning turntable of the flipping drive mechanism, the lower clamping mechanism is fixed on the lower part of the turning seat, the upper clamping mechanism is movably installed on the turning seat through the lifting drive mechanism, and the upper clamping mechanism and the lower clamping mechanism are arranged opposite to each other up and down, and are used to clamp and fix the cylindrical parts; the clamping positioning mechanism is installed on one side of the lower clamping mechanism; wherein,

[0008] The lower clamping mechanism has a rotatable lower rotary positioning disk, and the upper clamping mechanism has a rotatable upper rotary positioning disk, the rotary axis Z1 of the lower rotary positioning disk is coaxially arranged with the rotary axis Z2 of the upper rotary positioning disk, and the lower rotary positioning disk and the upper rotary positioning disk can be driven by the rotary drive mechanism to rotate synchronously, so as to drive the cylindrical part fixed between the lower clamping mechanism and the upper clamping mechanism to rotate;

[0009] The clamping and positioning mechanism includes a bidirectional linear drive module, a first clamping component and a second clamping component, the bidirectional linear drive module is installed on the lower clamping mechanism, the first clamping component and the second clamping component are relatively installed on the bidirectional linear drive module, and can be controlled by the bidirectional linear drive module to move synchronously relative to or toward each other, and the clamping axis Z3 formed by the first clamping component and the second clamping component is coaxial with the rotation axis Z1 of the lower rotary positioning plate; the first clamping component and the second clamping component are both provided with a plurality of cylinder clamping rollers for clamping the outer wall of the cylinder and a plurality of ring body pressing components for pressing against the lower ring body and the upper ring body, the ring body pressing component has a ring body pressing roller that can be controlled to telescope up and down, and a plurality of the cylinder clamping rollers are distributed on a first cylindrical surface centered on the clamping axis Z3, and a plurality of the ring body pressing rollers are distributed on a second cylindrical surface centered on the clamping axis Z3.

[0010] Furthermore, the clamping positioning mechanism also includes an intermediate positioning component, which is fixed on a side close to the bidirectional linear drive module, and is located between the first clamping component and the second clamping component to form a "C"-shaped clamping space. The intermediate positioning component is also provided with a number of cylinder clamping rollers for clamping the outer wall of the cylinder and a number of ring pressing components for pressing against the lower ring body and the upper ring body.

[0011] Furthermore, the intermediate positioning assembly, the first clamping assembly and the second clamping assembly are also provided with a plurality of circumferentially distributed flange ring circumferential positioning blocks and a plurality of circumferentially distributed flange ring clamping assemblies.

[0012] Furthermore, the lower clamping mechanism also includes a lower end inner weld protection assembly located inside the lower rotary positioning plate, the lower end inner weld protection assembly includes a lower protection cover driving cylinder and a lower weld protection gas cover, the lower weld protection gas cover is installed on the driving end of the lower protection cover driving cylinder, and the lower protection cover driving cylinder drives the lower weld protection gas cover to telescope up and down;

[0013] The upper clamping mechanism also includes an upper inner weld protection assembly located inside the upper rotary positioning plate, the upper inner weld protection assembly includes an upper protection cover driving cylinder and an upper weld protection gas cover, the upper weld protection gas cover is installed on the driving end of the upper protection cover driving cylinder, and the upper weld protection gas cover is driven by the upper protection cover driving cylinder to telescope up and down;

[0014] An external weld protection component is also provided at one end of the first clamping component or the second clamping component away from the bidirectional linear drive module. The external weld protection component includes a rotating cylinder, an air hood mounting frame and an external weld protection air hood. The air hood mounting frame is installed on the driving end of the rotating cylinder. An external weld protection air hood is respectively provided at the upper and lower ends of the air hood mounting frame.

[0015] Furthermore, the lower pressing mechanism comprises a fixed pressing seat, a lower turntable bearing and a lower rotary positioning plate, wherein the fixed pressing seat is fixedly mounted on the flip seat, and the lower rotary positioning plate is mounted on the fixed pressing seat via the lower turntable bearing;

[0016] The upper clamping mechanism comprises a movable clamping seat, an upper turntable bearing and an upper rotary positioning plate. The movable clamping seat is slidably mounted on a lifting guide rail on the flip seat, and the upper rotary positioning plate is mounted on the movable clamping seat through an upper turntable bearing.

[0017] Furthermore, the lifting drive mechanism includes a driving motor and a lifting transmission gear, the driving motor is installed on a movable pressing seat, the lifting transmission gear is installed on the output end of the driving motor, a rack parallel to the lifting guide rail is fixedly installed on the flip seat, and the lifting transmission gear is meshed with the rack; an upper proximity switch and a lower proximity switch are also provided on the flip seat, and a switch trigger baffle located between the upper proximity switch and the lower proximity switch is also provided on the mounting plate of the movable pressing seat; an upper buffer and a lower buffer are also provided on the flip seat for limiting the lifting stroke of the upper pressing mechanism.

[0018] Furthermore, a safety lock assembly is also provided on the mounting plate of the movable clamping seat, and the safety lock assembly has a pin that can move telescopically. The upper part of the flip seat has a lock hole. When the upper clamping mechanism moves to the upper dead point position of the stroke, the pin can be inserted into the lock hole to fix the upper clamping mechanism.

[0019] Furthermore, the rotary drive mechanism includes a rotary drive motor, a rotary driving gear, a transmission bracket, a transmission shaft, a lower transmission gear, an upper transmission gear and a driven gear. The rotary drive motor is installed at the lower part of the fixed pressing seat, and the rotary driving gear is installed on the output shaft of the rotary drive motor and meshes with the lower gear ring on the outer side of the lower turntable bearing; the transmission bracket is installed on the fixed pressing seat, and the transmission shaft is rotatably installed on the transmission bracket, the lower transmission gear is fixed at the lower end of the transmission shaft and meshes with the rotary driving gear, the upper transmission gear is fixed at the upper end of the transmission shaft, and the driven gear is rotatably installed on the movable pressing seat and meshes with the upper gear ring on the outer side of the upper turntable bearing, and when the upper pressing mechanism moves down to the pressing position, the driven gear meshes with the upper transmission gear.

[0020] Furthermore, the fixed clamping seat is also provided with a conductive carbon brush assembly that is in sliding contact with the lower rotary positioning plate; the movable clamping seat is also provided with a brake assembly that cooperates with the upper ring gear, and the brake assembly includes a brake cylinder and a brake friction block, the brake cylinder is installed on the movable clamping seat, and the brake friction block is installed on the driving end of the brake cylinder, and the brake friction block is opposite to the upper ring gear, and the brake friction block is driven by the brake cylinder to contact or separate from the upper ring gear.

[0021] Furthermore, the flipping drive mechanism includes a flipping drive motor, a flipping driving gear and a flipping turntable bearing, the flipping drive motor is fixed on the base, the flipping driving gear is drivingly connected to the output shaft of the flipping drive motor, the flipping driving gear is meshed with the outer gear ring of the flipping turntable bearing, and the flipping turntable is mounted on the outer gear ring of the flipping turntable bearing.

[0022] Compared with the existing known technologies, the technical solution provided by the present invention has the following significant effects:

[0023] (1) The present invention provides a cylindrical inner and outer ring weld rotation welding forming clamping device, which comprises a base, a lower clamping mechanism, an upper clamping mechanism, a lifting drive mechanism, a flipping drive mechanism, a turning seat, a rotating drive mechanism and a clamping positioning mechanism. The turning drive mechanism is fixedly arranged on the base, the turning seat is installed on the turning turntable of the flipping drive mechanism, the lower clamping mechanism is fixed on the lower part of the turning seat, the upper clamping mechanism is movably installed on the turning seat through the lifting drive mechanism, and the upper clamping mechanism and the lower clamping mechanism are arranged opposite to each other up and down, and are used to clamp and fix the cylindrical parts. The lower clamping mechanism has a rotatable lower rotary positioning plate, and the upper clamping mechanism has a rotatable upper rotary positioning plate. The lower rotary positioning plate and the upper rotary positioning plate can be driven by the rotary drive mechanism to rotate synchronously, and are used to drive the cylindrical part fixed between the lower clamping mechanism and the upper clamping mechanism to rotate; the clamping positioning mechanism includes a bidirectional linear drive module, a first clamping assembly and a second clamping assembly. The bidirectional linear drive module is installed on the lower clamping mechanism, and the first clamping assembly and the second clamping assembly are relatively installed on the bidirectional linear drive module. It can be controlled by the bidirectional linear drive module to move synchronously relative to or towards each other; the first clamping assembly and the second clamping assembly are both provided with a number of cylinder clamping rollers for holding the outer wall of the cylinder and a number of ring pressing assemblies for pressing against the lower ring body and the upper ring body; the clamping positioning mechanism can accurately clamp and fix the cylindrical parts, and can support the thin-walled cylinder, effectively avoiding the problem of self-deformation of the cylinder; and cooperate with the upper and lower clamping mechanisms to clamp and fix each product to be welded, and use the ring pressing rollers to further ensure the positioning accuracy and installation accuracy of the parts. The clamping stability is conducive to reducing the deformation of the circumferential seam welding. In addition, the upper and lower clamping mechanisms are used to drive the cylindrical parts for rotation welding, and the turning mechanism is used to drive the cylindrical parts for turning welding. One clamping can realize the one-time welding of the inner and outer welds at both ends of the cylindrical parts, which improves the welding production efficiency and greatly improves the welding accuracy. The clamping deformation of the cylindrical parts with a diameter of 1000mm can be controlled within ±0.15mm, and the overall welding deformation can be controlled within ±0.2mm, which effectively reduces the welding defect rate and improves the economic benefits of the enterprise.

[0024] (2) The present invention is a cylindrical inner and outer ring weld rotation welding forming clamping device, whose clamping and positioning mechanism also includes an intermediate positioning component, which is fixed on a side close to the bidirectional linear drive module, and is located between the first clamping component and the second clamping component to form a "C"-shaped clamping space. The intermediate positioning component is also provided with a plurality of cylinder clamping rollers for clamping the outer wall of the cylinder and a plurality of ring pressing components for abutting against the lower ring body and the upper ring body. The intermediate positioning component and the first clamping component and the second clamping component on both sides are used for clamping, which can avoid the problem of losing roundness due to clamping and pressure on both sides, and further ensure the shape accuracy and clamping matching accuracy of the cylindrical parts; and the intermediate positioning component can be used as a fixed ruler when installing the parts, which is convenient for the initial positioning of the parts during the installation operation, making the clamping operation simpler and more convenient;

[0025] (3) The present invention is a cylindrical inner and outer ring weld rotation welding forming clamping device, wherein the middle positioning assembly, the first clamping assembly and the second clamping assembly are further provided with a plurality of circumferentially distributed flange ring circumferential positioning blocks and a plurality of circumferentially distributed flange ring clamping assemblies. The flange ring circumferential positioning blocks can be used to quickly position the flange ring sleeved on the outer periphery of the cylinder, thereby ensuring the concentricity of the flange ring and the cylinder. At the same time, the flange ring clamping assembly can be used to clamp and fix the flange ring, thereby avoiding interference of the flange ring with the cylinder during the ring seam welding process, thereby further improving the stability of the ring seam welding.

[0026] (4) The present invention provides a cylindrical inner and outer ring weld rotation welding forming clamping device, wherein the lower clamping mechanism also includes a lower end inner weld protection component located on the inner side of the lower rotary positioning plate, and the upper clamping mechanism also includes an upper end inner weld protection component located on the inner side of the upper rotary positioning plate. The first clamping component or the second clamping component is also provided with an outer weld protection component at one end away from the bidirectional linear drive module, which can provide protective gas during the inner and outer ring weld welding process, thereby ensuring the beauty of the weld forming; and the inner weld protection component adopts an up and down telescopic design, and the outer weld protection component adopts a circumferential swing design, the structural design is simple and compact, and will not interfere with the clamping operation of the parts, thereby improving the convenience of the clamping operation;

[0027] (5) The present invention is a cylindrical inner and outer ring weld forming clamping device with rotation, wherein the lower rotary positioning plate is installed on the fixed clamping seat through the lower rotary plate bearing, and the upper rotary positioning plate is installed on the movable clamping seat through the upper rotary plate bearing. The rotary plate bearing is used to realize the flexible rotation of the upper and lower clamping seats, so that the upper and lower clamping seats have high coaxiality, stable rotation, and strong axial bearing capacity, which can meet the needs of ring seam welding of large-sized cylindrical parts;

[0028] (6) The present invention is a cylindrical inner and outer ring weld rotation welding forming clamping device, whose lifting drive mechanism adopts a gear rack transmission mechanism driven by a motor, which can ensure the stable lifting movement of the upper clamping mechanism; and the lifting stroke can be controlled by the upper proximity switch and the lower proximity switch to ensure the accuracy of the lifting position of the upper clamping mechanism; the turning seat is also provided with an upper buffer member and a lower buffer member for limiting the lifting stroke of the upper clamping mechanism, which further ensures the stability and position accuracy of the lifting movement of the upper clamping mechanism and protects the proximity switch;

[0029] (7) The present invention is a cylindrical inner and outer ring weld forming clamping device, wherein a safety lock assembly is further provided on the mounting plate of the movable clamping seat, and the safety lock assembly has a bolt that can be telescopically moved, and the upper part of the flip seat has a lock hole. When the upper clamping mechanism moves to the upper dead center position of the stroke, the bolt can be inserted into the lock hole to fix the upper clamping mechanism; the movable clamping seat can be fixed by the safety lock assembly, thereby ensuring the safety of the parts clamping operation;

[0030] (8) The present invention provides a cylindrical inner and outer ring weld forming and clamping device, wherein the rotary drive mechanism includes a rotary drive motor, a rotary driving gear, a transmission bracket, a transmission shaft, a lower transmission gear, an upper transmission gear and a driven gear. The rotary drive mechanism is used to realize that a rotary drive motor can control the upper and lower clamping seats to rotate synchronously, and the structure is simple and compact, the coordination is accurate and reliable, and the transmission is stable and efficient;

[0031] (9) The present invention provides a cylindrical inner and outer ring weld forming clamping device, wherein a conductive carbon brush assembly is provided on the fixed clamping seat and is in sliding contact with the lower rotary positioning plate, thereby facilitating the conduction of the ring seam during rotary welding; a brake assembly is provided on the movable clamping seat and is matched with the upper gear ring, thereby being able to quickly brake the clamping seat and improve production efficiency; the brake assembly has a simple structure and a fast action response speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural diagram of a cylindrical part for a chlorate electrolysis device;

[0033] Figure 2 It is a three-dimensional structural schematic diagram of a cylindrical inner and outer ring weld forming clamping device according to the present invention;

[0034] Figure 3 It is a schematic diagram of the cooperation between the turning seat and the turning driving mechanism in a cylindrical inner and outer ring weld forming clamping device according to the present invention;

[0035] Figure 4 It is a schematic diagram of the upper clamping mechanism in the cylindrical inner and outer ring weld follow-up welding forming clamping device of the present invention rising to the top dead center position;

[0036] Figure 5 It is a structural schematic diagram of a turning-over driving mechanism in a cylindrical inner and outer ring weld forming clamping device according to the present invention;

[0037] Figure 6 It is a structural schematic diagram of a lower clamping mechanism in a cylindrical inner and outer ring weld forming and rotating welding clamping device according to the present invention;

[0038] Figure 7 It is a schematic diagram of an angle structure of an upper clamping mechanism in a cylindrical inner and outer ring weld forming clamping device according to the present invention;

[0039] Figure 8 It is a schematic structural diagram of another angle of the upper clamping mechanism in a cylindrical inner and outer ring weld rotation welding forming clamping device of the present invention;

[0040] Fig. 9 It is a structural schematic diagram of a clamping and positioning mechanism in a cylindrical inner and outer ring weld rotation welding forming clamping device of the present invention;

[0041] Fig.10 It is a structural schematic diagram of a clamping and positioning mechanism in a cylindrical inner and outer ring weld rotation welding and forming clamping device of the present invention, in which the intermediate positioning component is omitted;

[0042] Fig.11 It is a structural schematic diagram of the first clamping assembly in a cylindrical inner and outer ring weld rotation welding forming clamping device of the present invention;

[0043] Fig.12 It is a structural schematic diagram of an intermediate positioning assembly in a cylindrical inner and outer ring weld forming clamping device according to the present invention;

[0044] Fig.13 It is a three-dimensional structural schematic diagram of a cylindrical inner and outer ring weld rotation welding forming clamping device of the present invention (clamping operation state);

[0045] Fig.14 It is a three-dimensional structural schematic diagram of a cylindrical inner and outer ring weld rotation welding forming clamping device of the present invention (clamping completed state).

[0046] Explanation of the symbols in the schematic diagram:

[0047] 100, cylindrical parts; 101, cylinder; 102, lower ring body; 103, upper ring body; 104, flange ring; 105, outer ring seam; 106, inner ring seam;

[0048] 10. Base; 11. Fixing parts;

[0049] 20. Flipping drive mechanism; 21. Flipping turntable; 22. Flipping drive motor; 23. Flipping driving gear; 24. Flipping turntable bearing; 25. External gear ring;

[0050] 30. Turning seat; 31. Lifting guide rail; 32. Rack; 33. Upper proximity switch; 34. Lower proximity switch; 35. Upper buffer; 36. Lower buffer; 37. Lock hole;

[0051] 40. Lower clamping mechanism; 41. Fixed clamping seat; 42. Lower turntable bearing; 43. Lower gear ring; 44. Lower rotary positioning plate; 45. Lower end inner weld protection assembly; 45-1. Lower protection cover driving cylinder; 45-2. Lower weld protection gas cover; 46. Conductive carbon brush assembly;

[0052] 50. Upper clamping mechanism; 51. Movable clamping seat; 52. Upper turntable bearing; 53. Upper gear ring; 54. Upper rotary positioning plate; 55. Upper inner weld protection assembly; 55-1. Upper protection cover driving cylinder; 55-2. Upper weld protection gas cover; 56. Braking assembly; 56-1. Braking cylinder; 56-2. Braking friction block; 57. Safety lock assembly; 57-1. Latch; 58. Switch trigger baffle;

[0053] 60. Lifting drive mechanism; 61. Driving motor; 62. Lifting transmission gear;

[0054] 70. Rotation drive mechanism; 71. Rotation drive motor; 72. Rotation driving gear; 73. Transmission bracket; 74. Transmission shaft; 75. Lower transmission gear; 76. Upper transmission gear; 77. Driven gear;

[0055] 80. Clamping positioning mechanism; 81. Bidirectional linear drive module; 81-1. Module frame; 81-2. Module motor; 81-3. Transmission screw; 81-4. Sliding guide rail; 82. Intermediate positioning assembly; 82-1. Intermediate positioning frame; 83. First clamping assembly; 83-1. First clamping bracket; 84. Second clamping assembly; 84-1. Second clamping bracket; 85. External weld protection assembly; 85-1. Rotating cylinder; 85-2. Gas hood mounting frame; 85-3. External weld protection gas hood; 86. Cylinder clamping roller; 87. Ring body pressing assembly; 87-1. Ring body pressing cylinder; 87-2. Ring body pressing roller; 88. Flange ring circumferential positioning block; 89. Flange ring clamping assembly; 810. Clamping slider; 811. Screw nut; 812. Flange ring support block. DETAILED DESCRIPTION

[0056] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0057] [Example]

[0058] This embodiment uses Figure 1 Taking the cylindrical part 100 shown as an example, the welding positions are located at the contact inner and outer sides between the lower end of the cylinder 101 and the lower ring body 102, and the contact inner and outer sides between the upper end of the cylinder 101 and the upper ring body 103, that is, both the upper and lower ends have an outer annular seam 105 and an inner annular seam 106 to be welded.

[0059] like Figure 2 As shown, a cylindrical inner and outer ring weld rotation welding forming clamping device of this embodiment includes a base 10, a flip driving mechanism 20, a flip seat 30, a lower clamping mechanism 40, an upper clamping mechanism 50, a lifting driving mechanism 60, a rotating driving mechanism 70 and a clamping positioning mechanism 80. The base 10 can adopt a frame structure as the basis of the entire welding clamping device, and a plurality of fixing members 11 can be arranged at the lower end thereof, and the fixing members 11 are used to fix the entire welding clamping device on a platform such as the ground; the flip driving mechanism 20 is fixedly arranged on the base 10, and the two can form a frame structure as shown in FIG. Figure 3 In the L-shaped main structure shown, the flip seat 30 is installed on the flip turntable 21 of the flip drive mechanism 20. The flip seat 30 can adopt a rectangular frame structure. The rotation axis of the flip turntable 21 is arranged horizontally. The flip drive mechanism 20 drives the flip seat 30 to rotate to realize the flipping movement of the clamped parts. No manual flipping operation is required. The welding of the four internal and external annular seams at the upper and lower ends of the product can be completed by one clamping, avoiding the positioning error caused by the secondary clamping; the lower clamping mechanism 40 is fixed to the lower part of the flip seat 30, and the upper clamping mechanism 50 is movably installed on the flip seat 30 through the lifting drive mechanism 60, and the upper clamping mechanism 50 and the lower clamping mechanism 40 are arranged opposite to each other up and down, and are used to clamp and fix the cylindrical part 100; the clamping positioning mechanism 80 is installed on one side of the lower clamping mechanism 40. Figure 4 As shown, after the upper clamping mechanism 50 moves upward, a larger assembly space is formed between the upper and lower clamping mechanisms. Parts can be placed on the lower clamping mechanism 40 manually or by an industrial robot, and the cylinder 101 is clamped and positioned by the clamping and positioning mechanism 80. Then, the lifting drive mechanism 60 drives the upper clamping mechanism 50 to move downward to clamp and fix the assembled cylindrical part 100.

[0060] like Figure 4As shown, the lower clamping mechanism 40 has a rotatable lower rotary positioning disk 44, and the upper clamping mechanism 50 has a rotatable upper rotary positioning disk 54. The lower rotary positioning disk 44 has a structure for positioning the lower ring body 102, and the upper rotary positioning disk 54 has a structure for positioning the upper ring body 103. The upper and lower rotary positioning disks can be used to position the corresponding ring bodies. The specific structure of the lower rotary positioning disk 44 and the upper rotary positioning disk 54 can be determined according to the shape and size of the upper and lower ring bodies. The rotation axis Z1 of the lower rotary positioning disk 44 is coaxially arranged with the rotation axis Z2 of the upper rotary positioning disk 54, and the lower rotary positioning disk 44 and the upper rotary positioning disk 54 can be driven by the rotary drive mechanism 70 to rotate synchronously, and are used to drive the cylindrical part 100 fixed between the lower clamping mechanism 40 and the upper clamping mechanism 50 to rotate, which can ensure the rotation coaxiality of the cylindrical part 100, and can be used to weld the inner and outer annular seams with the welding robot to improve the welding stability and welding accuracy. It should be understood that the lower rotary positioning plate 44 and the upper rotary positioning plate 54 both have through holes in their centers. When the inner annular seam 106 is welded, welding is performed from the inside of the through hole, and when the outer annular seam 105 is welded, welding is performed from the outside of the rotary positioning plate.

[0061] like Fig. 9 and Fig.10As shown, the clamping and positioning mechanism 80 includes a bidirectional linear drive module 81, a first clamping assembly 83 and a second clamping assembly 84. The bidirectional linear drive module 81 is mounted on the lower clamping mechanism 40. The first clamping assembly 83 and the second clamping assembly 84 are relatively mounted on the bidirectional linear drive module 81 and can be controlled by the bidirectional linear drive module 81 to move synchronously relative to or toward each other. The clamping axis Z3 formed by the first clamping assembly 83 and the second clamping assembly 84 is coaxial with the rotation axis Z1 of the lower rotary positioning plate 44. The cylinder body clamped by the first clamping assembly 83 and the second clamping assembly 84 101 can remain coaxial with the upper and lower rotary positioning plates to improve the positioning accuracy of parts; the first clamping assembly 83 and the second clamping assembly 84 are both provided with a plurality of cylinder clamping rollers 86 for clamping the outer wall of the cylinder 101 and a plurality of ring pressing assemblies 87 for pressing against the lower ring body 102 and the upper ring body 103, the ring pressing assembly 87 has a ring pressing roller 87-2 that can be controlled to telescope up and down, a plurality of cylinder clamping rollers 86 are distributed on a first cylindrical surface centered on the clamping axis Z3, and a plurality of ring pressing rollers 87-2 are distributed on a second cylindrical surface centered on the clamping axis Z3. The cylinder pressing roller 86 and the ring pressing roller 87-2 can both rotate freely, which can enable the cylinder part 100 to maintain flexible rotation after clamping. The pressure direction of the ring pressing roller 87-2 is opposite to the direction of the pressing force of the corresponding rotary positioning plate, which can ensure the flatness of the lower ring body 102 and the upper ring body 103, and fix the ring body, effectively reducing the deformation caused by welding. It should be noted that during the clamping and welding process, the inner side of the cylinder 101 also has a support component (not shown in the figure), which is used to apply a radial outward force to the cylinder 101 to ensure the cylindrical structure of the cylinder 101 and reduce the deformation of the cylinder. During clamping, the cylinder clamping roller 86 on the clamping and positioning mechanism 80 can clamp and correct the thin-walled cylinder 101, and cooperate with the support assembly to apply a clamping effect inside and outside, further ensuring the roundness of the cylinder 101. At the same time, the lower clamping mechanism 40 and the upper clamping mechanism 50 are cooperated to clamp the assembled parts, and the ring body pressure roller 87-2 and the corresponding lower rotary positioning plate 44 or upper rotary positioning plate 54 are used to form an axial clamping effect on the ring body to be welded, so that the cylinder 101 and the upper and lower ring bodies can be welded when all degrees of freedom except the rotational degree of freedom are fixed, which can effectively resist welding thermal deformation, thereby reducing the overall deformation of the product after welding.

[0062] Through the above design, the rotation welding forming clamping equipment for the inner and outer ring welds of the cylinder can accurately clamp and fix the cylindrical part 100 by using the clamping positioning mechanism 80, and can support the thin-walled cylinder, effectively avoiding the problem of self-deformation of the cylinder; and cooperate with the upper and lower clamping mechanisms to clamp and fix each product to be welded, and use the ring body to press the roller to further ensure the positioning accuracy of the parts and the clamping stability, which is beneficial to reducing the deformation of the ring seam welding; in addition, the upper and lower clamping mechanisms are used to drive the cylindrical parts to rotate and weld, and the flipping mechanism is used to drive the cylindrical parts to flip and weld, and one-time clamping can realize the one-time welding forming of the inner and outer welds at both ends of the cylindrical parts, thereby improving the welding production efficiency, and the welding accuracy is greatly improved, effectively reducing the welding defect rate, and improving the economic benefits of the enterprise.

[0063] Reference Fig. 9 As shown, as a preferred embodiment, the clamping and positioning mechanism 80 further includes an intermediate positioning component 82, which is fixed on one side close to the bidirectional linear drive module 81, and is located between the first clamping component 83 and the second clamping component 84, forming a "C"-shaped clamping space. The intermediate positioning component 82 is also provided with a plurality of cylinder clamping rollers 86 for holding the outer wall of the cylinder 101 and a plurality of ring pressing components 87 for pressing against the lower ring 102 and the upper ring 103. The use of the intermediate positioning component 82 and the first clamping component 83 and the second clamping component 84 on both sides for clamping can avoid the problem of losing roundness due to clamping and pressure on both sides, and further ensure the shape accuracy and clamping matching accuracy of the cylindrical parts; and the intermediate positioning component 82 can be used as a fixed ruler when installing the parts, which is convenient for the initial positioning of the parts during the installation operation, making the clamping operation simpler and more convenient.

[0064] The specific structure of the clamp positioning mechanism 80 is further described as follows:

[0065] Reference Fig.10 As shown, the above-mentioned bidirectional linear drive module 81 includes a module outer frame 81-1, a module motor 81-2, a transmission screw 81-3 and a sliding guide rail 81-4. The module motor 81-2 is preferably a servo motor, which is installed at one end of the module outer frame 81-1 and is connected to one end of the transmission screw 81-3 supported at both ends in the module outer frame 81-1. It can drive the transmission screw 81-3 to rotate forward and reverse. The transmission screw 81-3 is divided into a forward thread section and a reverse thread section from the middle; the first clamping assembly 83 and the second clamping assembly 84 are symmetrically arranged, the first clamping assembly 83 has a first clamping bracket 83-1, and the second clamping assembly 84 has a second clamping bracket 84-1. The upper and lower sides of the first clamping bracket 83-1 and the second clamping bracket 84-1 are both provided with a plurality of cylinder clamping rollers 86 and a ring body pressing assembly 87; Fig.11Taking the first clamping assembly 83 as an example, the mounting plates of the first clamping bracket 83-1 and the second clamping bracket 84-1 are provided with a clamping slider 810, which is slidably mounted on the above-mentioned sliding guide rail 81-4, and the mounting plates of the first clamping bracket 83-1 and the second clamping bracket 84-1 are also provided with a screw nut 811, and the screw nut 811 on the first clamping bracket 83-1 and the second clamping bracket 84-1 is threadedly matched with the corresponding threaded section of the transmission screw 81-3. In this way, the module motor 81-2 drives the transmission screw 81-3 to rotate, which can drive the first clamping bracket 83-1 and the second clamping bracket 84-1 to move synchronously relative to or towards each other.

[0066] Reference Fig.12 As shown, the intermediate positioning assembly 82 includes an intermediate positioning frame 82-1, which can be fixed on the module outer frame 81-1 through a bracket, and a plurality of cylinder pressing rollers 86 and annular pressing assemblies 87 are provided on both the upper and lower sides of the intermediate positioning frame 82-1. In the annular pressing assembly 87, the annular pressing roller 87-2 is driven by the annular pressing cylinder 87-1, that is, the mounting seat of the annular pressing roller 87-2 is fixed on the driving end of the annular pressing cylinder 87-1. The inner sides of the intermediate positioning frame 82-1, the first clamping bracket 83-1 and the second clamping bracket 84-1 are all arc-shaped with the same diameter, and the cylinder pressing rollers 86 and the annular pressing assembly 87 are all distributed circumferentially.

[0067] In this embodiment, two flange rings 104 are also sleeved on the outer circumference of the cylinder 101. For the cylindrical part 100, a plurality of circumferentially distributed flange ring circumferential positioning blocks 88 and a plurality of circumferentially distributed flange ring clamping assemblies 89 are also provided on the intermediate positioning assembly 82, the first clamping assembly 83 and the second clamping assembly 84. The flange ring circumferential positioning blocks 88 can be used to quickly position the flange ring 104 sleeved on the outer circumference of the cylinder 101, thereby ensuring the concentricity of the flange ring 104 and the cylinder 101. At the same time, the flange ring clamping assembly 89 can be used to clamp and fix the flange ring 104, thereby avoiding interference of the flange ring 104 with the cylinder 101 during the circumferential seam welding process, thereby further improving the stability of the circumferential seam welding. Specifically, the flange ring circumferential positioning block 88 is a plastic part or a rubber part, which is installed on the corresponding intermediate positioning frame 82-1, the first clamping bracket 83-1 and the second clamping bracket 84-1 through a mounting plate, wherein two flange ring circumferential positioning blocks 88 form a group, and the flange ring circumferential positioning blocks 88 are triangular in structure, and each group of flange ring circumferential positioning blocks 88 forms a V-shaped positioning structure to facilitate the positioning of the outer circumference of the flange ring 104. The flange ring clamping assembly 89 can adopt a pneumatic clamping claw structure, and at least one is provided on the intermediate positioning frame 82-1, the first clamping bracket 83-1 and the second clamping bracket 84-1, for clamping and fixing the flange ring 104. In addition, on the intermediate positioning assembly 82, a flange ring support block 812 (such as Fig.12 As shown in the figure, the flange ring support block 812 is used to temporarily support the flange ring 104 when assembling the parts to facilitate the assembly of the various components of the cylindrical part 100.

[0068] Reference Figure 4 , Figure 5 ,as well as Figure 6 As shown, in this embodiment, the lower clamping mechanism 40 also includes a lower end inner weld protection assembly 45 located on the inner side of the lower rotary positioning plate 44, and the lower end inner weld protection assembly 45 includes a lower protection cover driving cylinder 45-1 and a lower weld protection gas cover 45-2. The lower protection cover driving cylinder 45-1 is installed on a fixed part that does not rotate relative to the lower rotary positioning plate 44 in the lower clamping mechanism 40, such as a fixed clamping seat 41, and the lower weld protection gas cover 45-2 is installed on the lower protection cover At the driving end of the driving cylinder 45-1, the lower protective cover driving cylinder 45-1 drives the lower weld protective gas cover 45-2 to telescope up and down. When the lower protective cover driving cylinder 45-1 contracts, the lower weld protective gas cover 45-2 moves below the positioning surface of the lower rotary positioning plate 44, without interfering with the positioning installation of the lower ring body 102. When the lower protective cover driving cylinder 45-1 extends, the lower weld protective gas cover 45-2 moves to the inner annular seam at the lower part of the cylinder 101.

[0069] Similarly, if Figure 7 and Figure 8As shown, the upper clamping mechanism 50 further includes an upper inner weld protection assembly 55 located inside the upper rotary positioning plate 54, the upper inner weld protection assembly 55 includes an upper protection cover driving cylinder 55-1 and an upper weld protection gas cover 55-2, the upper protection cover driving cylinder 55-1 is installed on a fixed part that does not rotate relative to the upper rotary positioning plate 54 in the upper clamping mechanism 50, such as a movable clamping seat 51, and the upper weld protection gas cover 55-2 is installed on the upper protection cover driving cylinder 55-1. At the driving end of the cylinder 55-1, the upper protective cover driving cylinder 55-1 drives the upper weld protective gas cover 55-2 to telescope up and down. When the upper protective cover driving cylinder 55-1 contracts, the upper weld protective gas cover 55-2 moves above the positioning surface of the upper rotary positioning plate 54, without interfering with the positioning installation of the upper ring body 103. When the upper protective cover driving cylinder 55-1 extends, the upper weld protective gas cover 55-2 moves to the inner annular seam at the upper part of the cylinder 101.

[0070] like Fig. 9 and Fig.10 As shown, the first clamping assembly 83 or the second clamping assembly 84 is further provided with an external weld protection assembly 85 at one end away from the bidirectional linear drive module 81. The external weld protection assembly 85 includes a rotating cylinder 85-1, an air hood mounting frame 85-2 and an external weld protection air hood 85-3. The air hood mounting frame 85-2 is T-shaped as a whole. The air hood mounting frame 85-2 is installed on the driving end of the rotating cylinder 85-1, and the rotating cylinder 85-1 drives the air hood mounting frame 85-2 to rotate horizontally. An external weld protection air hood 85-3 is respectively provided at the upper and lower ends of the air hood mounting frame 85-2. The height of the external weld protection air hood 85-3 at the upper and lower ends corresponds to the height of the outer annular seam at the upper and lower ends of the cylinder 101.

[0071] Through the design of the above-mentioned inner and outer weld protection components, protective gas can be provided during the inner and outer circumferential seam welding process, ensuring the beautiful weld formation; and the above-mentioned inner weld protection component adopts an up and down telescopic design, and the outer weld protection component adopts a circumferential swing design. The structural design is simple and compact, and will not interfere with the clamping operation of parts, thereby improving the convenience of clamping operation.

[0072] It should be understood that the above descriptions of the upper and lower positions of the "inner and outer weld protection components" are for the convenience of expression and understanding. In actual application, the flipping drive mechanism 20 can drive the flip seat 30 to flip as a whole. At this time, the lower clamping mechanism 40 flips to the top of the upper clamping mechanism 50, and the annular seam at the bottom is flipped to the upper part for welding. During the welding process, the corresponding weld protection component can be turned on to provide protective gas to reduce oxidation at the welding position.

[0073] Further references Figures 4 to 6As shown, in this embodiment, the lower pressing mechanism 40 includes a fixed pressing seat 41, a lower turntable bearing 42 and a lower rotary positioning plate 44. The fixed pressing seat 41 is fixedly mounted on the flip seat 30, and the lower rotary positioning plate 44 is mounted on the fixed pressing seat 41 through the lower turntable bearing 42. Figure 7 and Figure 8 As shown, the upper clamping mechanism 50 includes a movable clamping seat 51, an upper turntable bearing 52 and an upper rotary positioning plate 54. The movable clamping seat 51 is slidably mounted on the lifting guide rail 31 on the flip seat 30, and the upper rotary positioning plate 54 is mounted on the movable clamping seat 51 through the upper turntable bearing 52. The lower rotary positioning plate 44 can rotate on the fixed clamping seat 41, and the upper rotary positioning plate 54 can rotate on the movable clamping seat 51. The turntable bearing is used to realize the flexible rotation of the upper and lower clamping seats, so that the upper and lower clamping seats have high coaxiality, stable rotation, and strong axial bearing capacity, which can meet the needs of circumferential seam welding of large-sized cylindrical parts. In this embodiment, the lifting drive mechanism 60 includes a driving motor 61 and a lifting transmission gear 62. The driving motor 61 is installed on the movable pressing seat 51, and the lifting transmission gear 62 is installed on the output end of the driving motor 61. A rack 32 parallel to the lifting guide rail 31 is fixedly installed on the flip seat 30. The lifting transmission gear 62 meshes with the rack 32. The driving motor 61 drives the lifting transmission gear 62 to rotate. At this time, the lifting transmission gear 62 can move up and down on the rack 32, thereby driving the entire upper pressing mechanism 50 to move up and down. Figure 3 As shown, the flip seat 30 is also provided with an upper proximity switch 33 and a lower proximity switch 34, and the mounting plate of the movable pressing seat 51 is also provided with a switch trigger baffle 58 (such as Figure 8 ), when the lifting drive mechanism 60 drives the upper clamping mechanism 50 to move to the upper dead point of the stroke, the switch trigger baffle 58 contacts the upper proximity switch 33 and sends a position signal, controls the drive motor 61 to stop working, and keeps the upper clamping mechanism 50 at the upper dead point of the stroke; similarly, when the lifting drive mechanism 60 drives the upper clamping mechanism 50 to move to the lower dead point of the stroke, the switch trigger baffle 58 contacts the lower proximity switch 34 and sends a position signal, controls the drive motor 61 to stop working, and keeps the upper clamping mechanism 50 at the lower dead point of the stroke; the upper proximity switch 33 and the lower proximity switch 34 can be used to control the lifting stroke to ensure the accuracy of the lifting position of the upper clamping mechanism 50. In addition, the flip seat 30 is also provided with an upper buffer 35 and a lower buffer 36 for limiting the lifting stroke of the upper clamping mechanism 50. The upper buffer 35 and the lower buffer 36 can be made of rubber material to play a collision buffering role, further ensuring the stability and position accuracy of the lifting movement of the upper clamping mechanism, and protecting the above-mentioned proximity switch.

[0074] like Figure 3 , Figure 4 and Figure 8 As shown, in this embodiment, a safety lock assembly 57 is also provided on the mounting plate of the movable clamping seat 51. The safety lock assembly 57 has a bolt 57-1 that can move telescopically. The upper part of the flip seat 30 has a lock hole 37. When the upper clamping mechanism 50 moves to the upper dead center position of the stroke, the bolt 57-1 can be inserted into the lock hole 37 to fix the upper clamping mechanism 50. The movable clamping seat 51 can be fixed by the safety lock assembly 57, thereby ensuring the safety of the parts clamping operation. The bolt 57-1 can be controlled to move telescopically by a cylinder. After the bolt 57-1 is inserted into the lock hole 37, even if the lifting drive mechanism 60 fails or fails, the upper clamping mechanism 50 can be prevented from accidentally falling, thereby ensuring the safety of the operation process.

[0075] Reference Figure 6 and Figure 8As shown, in the present embodiment, the above-mentioned rotary drive mechanism 70 comprises a rotary drive motor 71, a rotary driving gear 72, a transmission bracket 73, a transmission shaft 74, a lower transmission gear 75, an upper transmission gear 76 and a driven gear 77. The rotary drive motor 71 is mounted at the lower part of the fixed pressing seat 41, and the rotary driving gear 72 is mounted on the output shaft of the rotary drive motor 71 and meshes with the lower gear ring 43 on the outer side of the lower turntable bearing 42; the transmission bracket 73 is mounted on the fixed pressing seat 41, and the transmission shaft 74 is rotatably mounted on the transmission bracket 73, and the transmission shaft 74 is arranged vertically, the lower transmission gear 75 is fixed at the lower end of the transmission shaft 74 and meshes with the rotary driving gear 72, the upper transmission gear 76 is fixed at the upper end of the transmission shaft 74, and the driven gear 77 is rotatably mounted on the movable pressing seat 51 and meshes with the upper gear ring 53 on the outer side of the upper turntable bearing 52. When the upper pressing mechanism 50 moves down to the pressing position, the driven gear 77 meshes with the upper transmission gear 76. During the welding process, the rotary drive motor 71 drives the rotary driving gear 72 to rotate, and the rotary driving gear 72 drives the lower ring gear 43 to rotate, thereby driving the lower rotary positioning disk 44 to rotate; at the same time, the rotary driving gear 72 drives the lower transmission gear 75 to rotate, and drives the upper transmission gear 76 to rotate together through the transmission shaft 74, and the upper transmission gear 76 drives the driven gear 77 to rotate, thereby driving the upper ring gear 53 and the upper rotary positioning disk 54 to rotate together. The rotary drive mechanism 70 is used to realize that a rotary drive motor can control the synchronous rotation of the upper and lower clamping seats, with a simple and compact structure, accurate and reliable matching, and stable and efficient transmission. It should be noted that the transmission ratios of the lower ring gear 43 and the upper ring gear 53 are consistent. Preferably, the diameters of the lower transmission gear 75 and the upper transmission gear 76 are the same, the diameters of the rotary driving gear 72 and the driven gear 77 are the same, and the diameters of the lower ring gear 43 and the upper ring gear 53 are also the same. The lower turntable bearing 42 and the upper turntable bearing 52 are both existing products, which are composed of an inner ring and an outer ring that can rotate relative to each other. In this embodiment, the inner ring of the turntable bearing is fixed on the corresponding clamping seat, the outer ring is provided with a gear ring, and the rotary positioning plate is fixed on the outer ring of the corresponding turntable bearing.

[0076] like Figure 5 and Figure 6 As shown, in this embodiment, the fixed pressing seat 41 is also provided with a conductive carbon brush assembly 46 that is in sliding contact with the lower rotary positioning plate 44. The bracket of the conductive carbon brush assembly 46 is installed on the fixed pressing seat 41. The bracket is provided with a carbon brush head, which is elastically abutted against the bottom surface of the lower rotary positioning plate 44 through a spring, facilitating the conduction of the annular seam rotary welding process. Figure 7As shown, in this embodiment, the movable clamping seat 51 is also provided with a brake assembly 56 that matches the upper gear ring 53. The brake assembly 56 includes a brake cylinder 56-1 and a brake friction block 56-2. The brake cylinder 56-1 is installed on the movable clamping seat 51, and the brake friction block 56-2 is installed on the driving end of the brake cylinder 56-1. The brake friction block 56-2 is opposite to the upper gear ring 53. The brake cylinder 56-1 drives the brake friction block 56-2 to contact or separate with the upper gear ring 53. When the rotating rotary positioning disk needs to be braked, the brake cylinder 56-1 drives the brake friction block 56-2 to contact the upper gear ring 53 to provide braking resistance, so that the cylindrical part 100 between the upper and lower clamping mechanisms can stop rotating quickly. The above-mentioned brake assembly 56 can quickly brake the clamping seat, improve production efficiency, and also reduce the damage caused by the forced rotation of the rotary drive motor 71 due to inertia; and the brake assembly 56 has a simple structure and a fast action response speed.

[0077] Reference Figure 5 As shown, in this embodiment, the flip driving mechanism 20 includes a flip driving motor 22, a flip driving gear 23 and a flip turntable bearing 24. The flip driving motor 22 is fixed on the base 10, the flip driving gear 23 is connected to the output shaft of the flip driving motor 22, the flip driving gear 23 is meshed with the outer gear ring 25 of the flip turntable bearing 24, and the flip turntable 21 is installed on the outer gear ring 25 of the flip turntable bearing 24. When flip welding is required, the flip driving motor 22 drives the flip driving gear 23 to rotate, and then drives the outer gear ring 25 and the flip turntable 21 to rotate, so as to realize the control of the rotation angle of the flip seat 30. The above-mentioned flip turntable bearing 24 is an existing product, which is composed of an inner ring and an outer ring. The inner ring can be fixed in the frame outside the flip driving mechanism 20, and the outer ring rotates freely relative to the inner ring. The outer gear ring 25 is located on the outer periphery of the outer ring. The flip turntable bearing 24 can withstand a large load and can effectively support the entire flip seat 30, the lower clamping mechanism 40, the upper clamping mechanism 50, the lifting drive mechanism 60, the rotating drive mechanism 70 and the clamping positioning mechanism 80, as well as the cylindrical part 100 thereon.

[0078] Fig.13 The schematic diagram of the clamping process of the cylindrical inner and outer ring weld forming clamping device of this embodiment is shown. Fig.13As shown, when the cylindrical part 100 is clamped, the lifting drive mechanism 60 drives the upper clamping mechanism 50 to rise to the upper dead center position of the stroke, and at the same time, the latch 57-1 of the safety lock assembly 57 is inserted into the lock hole 37 and fixed to ensure the safety of the clamping and unloading operations after welding; the bidirectional linear drive module 81 drives the first clamping assembly 83 and the second clamping assembly 84 to be in an open state; the lower ring body 102 is placed on the lower rotary positioning plate 44 for positioning, and the cylinder 101 is placed on the lower ring body 102, and the flange ring 104 is placed on the outer side of the cylinder 101 as needed, and then the bidirectional linear drive module 81 drives the first clamping assembly 83 and the second clamping assembly 84 The cylinder 101 is held inward to position the cylinder 101, and at the same time, the ring body pressing roller 87-2 on the clamping positioning mechanism 80 is extended, and the lower ring body 102 is pressed by the lower ring body pressing roller 87-2, and the upper ring body 103 is placed on the upper ring body pressing roller 87-2; then the pin 57-1 is withdrawn from the lock hole 37, and the lifting drive mechanism 60 drives the upper clamping mechanism 50 to move downward, and the upper rotary positioning plate 54 is used to press the upper ring body 103 to achieve positioning; at the same time, the corresponding flange ring clamping assembly 89 clamps and fixes the flange ring 104, completing the clamping and fixing of the cylindrical part 100 on the rotating welding forming clamping device of the inner and outer ring welds of the cylinder.

[0079] Fig.14 The schematic diagram of the cylindrical part 100 after being clamped on the cylindrical inner and outer ring weld forming clamping device is shown. Fig.14 As shown, when welding the outer annular seam 105 of the upper part, the rotating cylinder 85-1 drives the outer weld seam protective gas hood 85-3 to move to the outer annular seam 105, and provides protective gas while welding; when welding the inner annular seam 106 of the upper part, the upper protective cover driving cylinder 55-1 drives the upper weld seam protective gas hood 55-2 to move to the inner annular seam 106, and provides protective gas while welding. Of course, the outer annular seam 105 and the inner annular seam 106 can also be welded together. During the annular seam welding process, the rotary drive mechanism 70 drives the cylindrical part 100 to rotate to achieve automatic welding of the annular seam. After the annular seam welding of one side is completed, the flip drive mechanism 20 drives the flip seat 30 to flip, and repeats the above welding process to complete the welding of the inner and outer annular seams of the other side. After the welding is completed, each actuator is reset, and the welded cylindrical part 100 can be taken out.

[0080] It is worth mentioning that the cylindrical inner and outer ring weld rotation welding forming clamping equipment of the present invention can be used for welding other similar cylindrical products in addition to welding the above-mentioned cylindrical part 100 for chlorate electrolysis device, and can be used for the automated welding of titanium alloy products, especially for double-sided inner and outer ring seam welding of large-sized thin-walled cylindrical parts.

[0081] The invention provides a rotational welding and forming clamping device for inner and outer ring welds of a cylinder. The clamping and positioning mechanism can accurately clamp and fix the cylinder parts, and can support the thin-walled cylinder, effectively avoiding the problem of self-deformation of the cylinder. The upper and lower clamping mechanisms are cooperated to clamp and fix each product to be welded, and the ring body pressure roller is used to further ensure the positioning accuracy and clamping stability of the parts, which is beneficial to reducing the deformation of the ring seam welding. In addition, the upper and lower clamping mechanisms are used to drive the cylinder parts for rotational welding, and the flipping mechanism is used to drive the cylinder parts for flipping welding. One-time clamping can realize one-time welding and forming of the inner and outer welds at both ends of the cylinder parts, thereby improving the welding production efficiency and greatly improving the welding accuracy. Practice has proved that the clamping deformation of a cylinder part with a diameter of 1000mm can be controlled within ±0.15mm, and the overall welding deformation can be controlled within ±0.2mm, effectively reducing the welding defect rate and improving the economic benefits of the enterprise.

[0082] The present invention and its embodiments are described schematically above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and creatively designs a structure and an embodiment similar to the technical solution without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A cylindrical inner and outer ring weld forming and clamping device, comprising a base (10), a lower clamping mechanism (40), an upper clamping mechanism (50) and a lifting drive mechanism (60), characterized in that: The invention also comprises a flipping drive mechanism (20), a turnover seat (30), a rotation drive mechanism (70) and a clamping and positioning mechanism (80), wherein the flipping drive mechanism (20) is fixedly arranged on the base (10), the turnover seat (30) is mounted on the flipping turntable (21) of the flipping drive mechanism (20), the lower clamping mechanism (40) is fixed on the lower part of the turnover seat (30), the upper clamping mechanism (50) is movably mounted on the turnover seat (30) via the lifting drive mechanism (60), and the upper clamping mechanism (50) and the lower clamping mechanism (40) are arranged opposite to each other in the upper and lower directions and are used to clamp and fix the cylindrical part (100); the clamping and positioning mechanism (80) is mounted on one side of the lower clamping mechanism (40); wherein, The lower clamping mechanism (40) has a rotatable lower rotary positioning disk (44), and the upper clamping mechanism (50) has a rotatable upper rotary positioning disk (54), the rotary axis Z1 of the lower rotary positioning disk (44) and the rotary axis Z2 of the upper rotary positioning disk (54) are coaxially arranged, and the lower rotary positioning disk (44) and the upper rotary positioning disk (54) can be driven by the rotary drive mechanism (70) to rotate synchronously, so as to drive the cylindrical part (100) fixed between the lower clamping mechanism (40) and the upper clamping mechanism (50) to rotate; The clamping positioning mechanism (80) comprises a bidirectional linear drive module (81), a first clamping assembly (83) and a second clamping assembly (84); the bidirectional linear drive module (81) is mounted on the lower clamping mechanism (40); the first clamping assembly (83) and the second clamping assembly (84) are mounted on the bidirectional linear drive module (81) in a relative manner and can be controlled by the bidirectional linear drive module (81) to move synchronously relative to or towards each other; the first clamping assembly (83) and the second clamping assembly (84) are mounted on the bidirectional linear drive module (81) in a relative manner and can be controlled by the bidirectional linear drive module (81) to move synchronously relative to or towards each other; The clamping axis Z3 formed by the clamping assembly (84) is coaxial with the rotation axis Z1 of the lower rotary positioning plate (44); the first clamping assembly (83) and the second clamping assembly (84) are both provided with a plurality of cylinder clamping rollers (86) for clamping the outer wall of the cylinder (101) and a plurality of ring pressing assemblies (87) for abutting against the lower ring body (102) and the upper ring body (103), the ring pressing assemblies (87) having ring pressing rollers (87-2) capable of controlled upward and downward telescopic movement, and the plurality of The cylinder clamping rollers (86) are distributed on a first cylindrical surface with the clamping axis Z3 as the center, and the plurality of ring body pressing rollers (87-2) are distributed on a second cylindrical surface with the clamping axis Z3 as the center; the clamping positioning mechanism (80) further comprises an intermediate positioning component (82), the intermediate positioning component (82) being fixed on a side close to the bidirectional linear drive module (81), and the intermediate positioning component (82) being located between the first clamping component (83) and the second clamping component (84), A "C"-shaped clamping space is formed, and the intermediate positioning component (82) is also provided with a plurality of cylinder clamping rollers (86) for clamping the outer wall of the cylinder (101) and a plurality of ring pressing components (87) for pressing against the lower ring body (102) and the upper ring body (103); the intermediate positioning component (82), the first clamping component (83) and the second clamping component (84) are also provided with a plurality of circumferentially distributed flange ring circumferential positioning blocks (88) and a plurality of circumferentially distributed flange ring clamping components (89); The lower clamping mechanism (40) further comprises a lower end inner weld protection assembly (45) located inside the lower rotary positioning plate (44), the lower end inner weld protection assembly (45) comprising a lower protection cover driving cylinder (45-1) and a lower weld protection gas cover (45-2), the lower weld protection gas cover (45-2) being mounted on the driving end of the lower protection cover driving cylinder (45-1), and the lower protection cover driving cylinder (45-1) drives the lower weld protection gas cover (45-2) to move upward and downward in telescopic manner; The upper clamping mechanism (50) further comprises an upper inner weld protection assembly (55) located inside the upper rotary positioning plate (54), the upper inner weld protection assembly (55) comprising an upper protection cover driving cylinder (55-1) and an upper weld protection gas cover (55-2), the upper weld protection gas cover (55-2) being mounted on the driving end of the upper protection cover driving cylinder (55-1), and the upper weld protection gas cover (55-2) being driven by the upper protection cover driving cylinder (55-1) to move upward and downward in telescopic manner; An external weld protection assembly (85) is also provided at one end of the first clamping assembly (83) or the second clamping assembly (84) away from the bidirectional linear drive module (81); the external weld protection assembly (85) comprises a rotary cylinder (85-1), an air hood mounting frame (85-2) and an external weld protection air hood (85-3); the air hood mounting frame (85-2) is mounted on the drive end of the rotary cylinder (85-1); and an external weld protection air hood (85-3) is provided at each of the upper and lower ends of the air hood mounting frame (85-2).

2. The cylindrical inner and outer ring weld forming and clamping equipment according to claim 1 is characterized in that: The lower pressing mechanism (40) comprises a fixed pressing seat (41), a lower turntable bearing (42) and a lower rotary positioning plate (44); the fixed pressing seat (41) is fixedly mounted on the turning seat (30); and the lower rotary positioning plate (44) is mounted on the fixed pressing seat (41) via the lower turntable bearing (42); The upper pressing mechanism (50) comprises a movable pressing seat (51), an upper turntable bearing (52) and an upper rotary positioning plate (54); the movable pressing seat (51) is slidably mounted on a lifting guide rail (31) on the turning seat (30); and the upper rotary positioning plate (54) is mounted on the movable pressing seat (51) via the upper turntable bearing (52).

3. The cylindrical inner and outer ring weld forming and clamping equipment according to claim 2 is characterized in that: The lifting drive mechanism (60) comprises a driving motor (61) and a lifting transmission gear (62), wherein the driving motor (61) is mounted on a movable pressing seat (51), and the lifting transmission gear (62) is mounted on the output end of the driving motor (61). A rack (32) parallel to the lifting guide rail (31) is fixedly mounted on the flip seat (30), and the lifting transmission gear (62) meshes with the rack (32). The flip seat (30) is also provided with an upper proximity switch (33) and a lower proximity switch (34), and a switch trigger baffle (58) located between the upper proximity switch (33) and the lower proximity switch (34) is also provided on the mounting plate of the movable pressing seat (51). The flip seat (30) is also provided with an upper buffer (35) and a lower buffer (36) for limiting and buffering the lifting stroke of the upper pressing mechanism (50).

4. The cylindrical inner and outer ring weld forming and clamping equipment according to claim 3 is characterized in that: A safety lock assembly (57) is also provided on the mounting plate of the movable clamping seat (51), and the safety lock assembly (57) has a latch (57-1) capable of telescopic movement. The upper portion of the flip seat (30) has a lock hole (37), and when the upper clamping mechanism (50) moves to the upper dead center position of the stroke, the latch (57-1) can be inserted into the lock hole (37) to fix the upper clamping mechanism (50).

5. The cylindrical inner and outer ring weld forming and clamping equipment according to claim 2 is characterized in that: The rotary drive mechanism (70) comprises a rotary drive motor (71), a rotary driving gear (72), a transmission bracket (73), a transmission shaft (74), a lower transmission gear (75), an upper transmission gear (76) and a driven gear (77); the rotary drive motor (71) is mounted on the lower part of the fixed pressing seat (41); the rotary driving gear (72) is mounted on the output shaft of the rotary drive motor (71) and meshes with the lower gear ring (43) on the outer side of the lower turntable bearing (42); the transmission bracket (73) is mounted on the fixed pressing seat (41) and the lower transmission gear (75) is mounted on the lower part of the fixed pressing seat (41). ), the transmission shaft (74) is rotatably mounted on the transmission bracket (73), the lower transmission gear (75) is fixed to the lower end of the transmission shaft (74) and meshes with the rotating driving gear (72), the upper transmission gear (76) is fixed to the upper end of the transmission shaft (74), the driven gear (77) is rotatably mounted on the movable clamping seat (51) and meshes with the upper gear ring (53) on the outer side of the upper turntable bearing (52), and when the upper clamping mechanism (50) moves downward to the clamping position, the driven gear (77) meshes with the upper transmission gear (76).

6. The cylindrical inner and outer ring weld forming and clamping equipment according to claim 5 is characterized in that: The fixed pressing seat (41) is also provided with a conductive carbon brush assembly (46) in sliding contact with the lower rotary positioning plate (44); the movable pressing seat (51) is also provided with a brake assembly (56) that cooperates with the upper gear ring (53), the brake assembly (56) comprising a brake cylinder (56-1) and a brake friction block (56-2), the brake cylinder (56-1) being mounted on the movable pressing seat (51), the brake friction block (56-2) being mounted on the driving end of the brake cylinder (56-1), and the brake friction block (56-2) being opposite to the upper gear ring (53), and the brake cylinder (56-1) drives the brake friction block (56-2) to contact or separate from the upper gear ring (53).

7. The cylindrical inner and outer ring weld forming and clamping equipment according to claim 1 is characterized in that: The flipping drive mechanism (20) comprises a flipping drive motor (22), a flipping driving gear (23) and a flipping turntable bearing (24); the flipping drive motor (22) is fixed on the base (10); the flipping driving gear (23) is drivingly connected to the output shaft of the flipping drive motor (22); the flipping driving gear (23) is meshed with an outer gear ring (25) of the flipping turntable bearing (24); and the flipping turntable (21) is mounted on the outer gear ring (25) of the flipping turntable bearing (24).

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