A welding device for a streamlined rudder

Abstract

The present invention relates to the field of welding jigs, and particularly to a welding device for a streamlined rudder. The technical problem is that the current process of adjusting the arc-shaped rudder plate is rather cumbersome, and relative displacement is likely to occur during the process of fixing the arc-shaped rudder plate, posing a risk of clamping skew or deviation, thereby affecting the welding efficiency and quality of the arc-shaped rudder plate and the rudder frame. A welding device for a streamlined rudder includes a box body, a frame, a fixing plate, etc.; a frame is fixedly installed at the bottom inside the box body, and a fixing plate is vertically installed inside the frame. By moving two clamping plates towards each other, the sides of the two clamping plates that approach each other will contact the upper and lower sides of the rudder frame and the two arc-shaped rudder plates, so that the upper and lower sides of the two arc-shaped rudder plates can be aligned with the upper and lower sides of the rudder frame, thereby improving the alignment accuracy and efficiency of the rudder frame and the two arc-shaped rudder plates, and thus improving the quality after welding the rudder frame and the two arc-shaped rudder plates.

Description

Technical Field

[0001] The present invention relates to the field of welding jigs, and particularly to a welding device for a streamlined rudder. Background Art

[0002] A streamlined rudder is also called a double-plate rudder; this kind of rudder is formed by covering the periphery of the framework with double plates, has high strength, and the cross-section of the rudder blade is streamlined; due to being hollow and watertight inside, a certain buoyancy is generated, reducing the pressure on the rudder bearing; moreover, its hydrodynamic performance is good, the lift coefficient of the rudder is large, the resistance is small, and the rudder efficiency is high; although the structure of this kind of rudder is relatively complex, it is widely used due to its many advantages.

[0003] During the production of a streamlined rudder, two arc-shaped rudder plates need to be closed and wrapped around the rudder frame, and then welded at the joints of the two arc-shaped rudder plates and the rudder frame. However, due to the relatively special shapes of the arc-shaped rudder plates and the rudder frame, currently, generally, the position of the rudder frame is fixed, and then the positions of the two arc-shaped rudder plates are repeatedly adjusted so that the two arc-shaped rudder plates can closely fit the two sides of the rudder frame. Then, a special fixture is used to firmly fix the two arc-shaped rudder plates on the rudder frame, and then the joints of the arc-shaped rudder plates and the rudder frame are welded. However, the process of adjusting the arc-shaped rudder plates is currently rather cumbersome, and during the process of fixing the arc-shaped rudder plates with the fixture, the two arc-shaped rudder plates and the rudder frame are prone to relative displacement, which will cause the plates to be clamped obliquely or off-center, thereby affecting the welding efficiency and quality of the arc-shaped rudder plates and the rudder frame. Summary of the Invention

[0004] In order to overcome the shortcomings that the process of adjusting the arc-shaped rudder plates is currently rather cumbersome, relative displacement is prone to occur during the process of fixing the arc-shaped rudder plates, and there is a risk of clamping obliquely or off-center, thereby affecting the welding efficiency and quality of the arc-shaped rudder plates and the rudder frame, the purpose of the present invention is to provide a welding device for a streamlined rudder for the above technical problems, which can correct the rudder frame multiple times, enable the rudder frame to align with the two arc-shaped rudder plates, and then fully correct and fix the two arc-shaped rudder plates after they are attached to the rudder frame, avoiding relative displacement between the arc-shaped rudder plates and the rudder frame, and improving the welding efficiency and quality of the arc-shaped rudder plates and the rudder frame.

[0005] The technical implementation solution of the present invention is: A welding device for a streamlined rudder, comprising a box body, a frame, a fixing plate, a fixing mechanism, a clamping mechanism, and an opening and closing mechanism. A frame is fixedly installed at the bottom inside the box body, a fixing plate is vertically installed inside the frame, a fixing mechanism is provided on the box body and the fixing plate, and the fixing mechanism is used to fix the rudder frame. A clamping mechanism is provided on the box body and the fixing plate, and the clamping mechanism is used to clamp the rudder frame. An opening and closing mechanism is provided on the box body, and the opening and closing mechanism is used to drive the arc-shaped rudder plate to move.

[0006] More preferably, the fixing mechanism includes a hollow positioning frame, a limiting frame, a connecting plate, an electric push rod, a connecting plate and a vertical plate. A hollow positioning frame is slidably arranged in the middle of the fixing plate. A limiting frame is fixedly installed on the hollow positioning frame. The limiting frame is located on one side of the fixing plate. A connecting plate is installed on one side of the hollow positioning frame. The connecting plate is slidably connected with the frame. An electric push rod is fixedly installed on the inner top and inner bottom of the box body respectively. A connecting plate is fixedly installed on the telescopic rods of the two electric push rods. A vertical plate is connected between the two connecting plates. The vertical plate is located between the hollow positioning frame and the connecting plate and contacts with one side of the connecting plate.

[0007] More preferably, the clamping mechanism includes vertical sliders, return springs, clamping plates, top blocks, top springs, guide roller frames and guide groove boxes. Two vertical sliders are slidably arranged on the fixing plate. The two vertical sliders are respectively located on the upper and lower sides of the hollow positioning frame. A return spring is connected between the side of the two vertical sliders close to each other and the fixing plate. A clamping plate is fixedly installed on the side of the two vertical sliders far from the vertical plate. The hollow positioning frame is located between the two clamping plates. Two top blocks are slidably arranged on each of the two clamping plates. Two top springs are connected between the two top blocks on the same side and the clamping plate on the same side. The two top springs are respectively wound around the two top blocks. A guide roller frame is installed on the side of the two vertical sliders far from each other. Two guide rollers are arranged on the side of the two guide roller frames far from each other. A guide groove box is installed on the side of the two connecting plates close to each other. A guide groove is opened on each of the two side surfaces in the two guide groove boxes.

[0008] More preferably, each guide groove is composed of a straight groove one, a straight groove two and an inclined groove one. The inclined groove one is located between the straight groove one and the straight groove two. The guide roller on the guide roller frame is located in the straight groove one of the guide groove.

[0009] More preferably, an inclined surface is arranged on the side of the two guide groove boxes close to each other.

[0010] More preferably, the opening and closing mechanism includes guide rails, electric sliders, opening and closing frames, sliding frames, vertical springs, return-shaped frames and electric suction cups. Two guide rails are installed on the inner top of the box body. Two electric sliders are slidably arranged on each of the two guide rails. Two electric sliders on different guide rails and on the same straight line are in a group. An opening and closing frame is connected between the two electric sliders in each group. A sliding frame is slidably arranged on each of the two opening and closing frames. A vertical spring is connected between the sliding frame on the same side and the opening and closing frame on the same side. A return-shaped frame is installed on the lower part of the two sliding frames. Four electric suction cups are respectively installed on the side of the two return-shaped frames close to each other. An arc-shaped rudder plate is adsorbed between the four electric suction cups on each side.

[0011] More preferably, it further includes an alignment mechanism which is arranged on the hollow positioning frame. The alignment mechanism is used to align the rudder frame and includes an alignment frame, rollers and a driving plate. Four alignment frames are slidably arranged on the hollow positioning frame. The two upper alignment frames form a group, and the two lower alignment frames form a group. Two rollers are arranged on the side of each group of alignment frames close to each other. The four rollers are respectively connected to the four alignment frames. Two driving plates are slidably arranged on the hollow positioning frame. Two driving grooves are respectively formed on the two driving plates. One side of each of the two driving plates is connected to the vertical plate.

[0012] More preferably, each driving groove is composed of a vertical groove and an inclined groove two. Each roller is respectively located in the inclined groove two of each driving groove.

[0013] More preferably, it further includes a pressing mechanism which is arranged on the alignment frame and the driving plate. The pressing mechanism is used to press and correct the rudder frame and includes a rotating shaft, a pressing plate, gears, torsion springs, racks, vertical rollers and a pushing plate. A rotating shaft is rotatably arranged on each alignment frame. A pressing plate is fixedly installed in the middle of each rotating shaft. A gear is fixedly installed on both sides of each rotating shaft. A torsion spring is connected between the sides of the two gears away from each other and the inner two side surfaces of the alignment frame. Two racks are slidably arranged on each alignment frame. A number of tooth blocks are arranged on one side of the two racks on the same alignment frame. The tooth blocks of the two racks on the same alignment frame are respectively meshed with the two gears on the same alignment frame. A vertical roller is rotatably connected between the other sides of the two racks on the same alignment frame. A pushing plate is fixedly installed on the side of each of the two driving plates away from each other. The pushing plates on the same side are located between the two vertical rollers on the same side.

[0014] More preferably, it further includes a limiting frame. Two limiting frames are respectively installed on the lower parts of the two inner side surfaces of the box body.

[0015] The beneficial effects of the present invention are as follows: 1. By moving the two clamping plates towards each other, the sides of the two clamping plates close to each other will contact the upper and lower side surfaces of the rudder frame and the two arc-shaped rudder plates, so that the upper and lower sides of the two arc-shaped rudder plates can be aligned with the upper and lower side surfaces of the rudder frame, thereby improving the alignment accuracy and efficiency of the rudder frame and the two arc-shaped rudder plates, and thus improving the quality of the welded rudder frame and the two arc-shaped rudder plates.

[0016] 2. Under the action of the inclined groove two of the driving groove, the four rollers will move towards each other. The four rollers drive the four alignment frames to move towards each other. The four alignment frames can contact the two sides of the rudder frame, and thus can initially correct the position of the rudder frame, so that the rudder frame and the two arc-shaped rudder plates can fit more precisely, further improving the quality of the welded rudder frame and the two arc-shaped rudder plates.

[0017] 3. Eight racks drive eight gears to rotate. The eight gears drive four pressing plates to swing, and the torsion springs are twisted accordingly. The four pressing plates can then press the rudder frame, thereby enabling secondary correction of the position of the rudder frame, so that the rudder frame can fit more precisely with the two arc-shaped rudder plates, and further improving the quality after welding the rudder frame and the two arc-shaped rudder plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the opening and closing mechanism of the present invention.

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the fixing mechanism and the clamping mechanism of the present invention.

[0021] Figure 4 It is a sectional three-dimensional structural schematic diagram of the fixing mechanism and the clamping mechanism of the present invention.

[0022] Figure 5 It is a disassembled three-dimensional structural schematic diagram of some parts of the fixing mechanism and the clamping mechanism of the present invention.

[0023] Figure 6 It is a disassembled three-dimensional structural schematic diagram of some parts of the opening and closing mechanism of the present invention.

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the clamping plate of the present invention clamping the rudder frame and the arc-shaped rudder plate.

[0025] Figure 8 It is a three-dimensional structural schematic diagram of the hollow positioning frame and the rudder frame of the present invention.

[0026] Figure 9 It is a sectional three-dimensional structural schematic diagram of the alignment mechanism and the pressing mechanism of the present invention.

[0027] Figure 10 It is a sectional three-dimensional structural schematic diagram of the pressing mechanism of the present invention.

[0028] Figure 11 It is a three-dimensional structural schematic diagram of the hollow positioning frame of the present invention.

[0029] Figure 12 It is a three-dimensional structural schematic diagram of the pressing mechanism of the present invention.

[0030] Figure 13 It is a three-dimensional structural schematic diagram of the hollow positioning frame and the alignment frame of the present invention.

[0031] Figure 14 It is a three-dimensional structural schematic diagram of the rack, vertical roller and push plate of the present invention.

[0032] Figure 15 This is a three-dimensional structural schematic diagram of the alignment mechanism and pressing mechanism of the present invention.

[0033] Figure 16 This is a disassembled three-dimensional structural schematic diagram of some parts of the alignment mechanism and pressing mechanism of the present invention.

[0034] Figure 17 This is a disassembled three-dimensional structural schematic diagram of some parts of the pressing mechanism of the present invention.

[0035] The markings of each component in the attached drawings are as follows: 1. Box body, 2. Frame, 3. Fixed plate, 41. Rudder carrier, 42. Arc-shaped rudder plate, 51. Hollow positioning frame, 52. Limit frame, 53. Connecting plate, 54. Electric push rod, 55. Connecting plate, 56. Vertical plate, 61. Vertical slider, 62. Return spring, 63. Clamping plate, 64. Top block, 65. Top spring, 66. Guide roller frame, 67. Guide groove box, 68. Guide groove, 71. Guide rail, 72. Electric slider, 73. Opening and closing frame, 74. Sliding frame, 75. Vertical spring, 76. Loop frame, 77. Electric suction cup, 81. Alignment frame, 82. Roller, 83. Driving plate, 84. Driving groove, 91. Rotating shaft, 92. Pressing plate, 93. Gear, 94. Torsion spring, 95. Rack, 96. Vertical roller, 97. Pushing plate, 10. Limit frame. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1: A welding device for a streamlined rudder, as Figures 1-10 shown, includes a box body 1, a frame 2, a fixed plate 3, a fixing mechanism, a clamping mechanism and an opening and closing mechanism. A frame 2 is fixedly installed at the bottom inside the box body 1, a fixed plate 3 is vertically installed inside the frame 2, a fixing mechanism is provided on the box body 1 and the fixed plate 3, and the fixing mechanism is used to fix the rudder carrier 41. A clamping mechanism is provided on the box body 1 and the fixed plate 3, and the clamping mechanism is used to clamp the rudder carrier 41. An opening and closing mechanism is provided on the box body 1, and the opening and closing mechanism is used to drive the arc-shaped rudder plate 42 to move.

[0038] The fixing mechanism includes a hollow positioning frame 51, a limiting frame 52, a connecting plate 53, an electric push rod 54, a connecting plate 55 and a vertical plate 56. A hollow positioning frame 51 is slidably arranged in the middle of the fixing plate 3. A limiting frame 52 is fixedly installed on the hollow positioning frame 51. The limiting frame 52 is located on one side of the fixing plate 3. A connecting plate 53 is installed on one side of the hollow positioning frame 51. The connecting plate 53 is slidably connected with the frame 2. An electric push rod 54 is fixedly installed at the top and bottom inside the box body 1 respectively. A connecting plate 55 is fixedly installed on the telescopic rod of each of the two electric push rods 54. A vertical plate 56 is connected between the two connecting plates 55. The vertical plate 56 is located between the hollow positioning frame 51 and the connecting plate 53. The vertical plate 56 is in contact with one side of the connecting plate 53.

[0039] The clamping mechanism includes a vertical slider 61, a return spring 62, a clamping plate 63, a top block 64, a top spring 65, a guide roller frame 66 and a guide groove box 67. Two vertical sliders 61 are slidably arranged on the fixing plate 3. The two vertical sliders 61 are respectively located on the upper and lower sides of the hollow positioning frame 51. A return spring 62 is connected between the side of the two vertical sliders 61 close to each other and the fixing plate 3. A clamping plate 63 is fixedly installed on the side of each of the two vertical sliders 61 away from the vertical plate 56. The hollow positioning frame 51 is located between the two clamping plates 63. Two top blocks 64 are slidably arranged on each of the two clamping plates 63. Two top springs 65 are connected between the two top blocks 64 on the same side and the clamping plate 63 on the same side. The two top springs 65 are respectively wound around the two top blocks 64. A guide roller frame 66 is installed on the side of each of the two vertical sliders 61 away from each other. Two guide rollers are arranged on the side of the two guide roller frames 66 away from each other. A guide groove box 67 is installed on the side of each of the two connecting plates 55 close to each other. A guide groove 68 is opened on each of the two side surfaces in the two guide groove boxes 67.

[0040] Each guide groove 68 is composed of a first straight groove, a second straight groove and a first inclined groove. The first inclined groove is located between the first straight groove and the second straight groove. The guide roller on the guide roller frame 66 is located in the first straight groove of the guide groove 68.

[0041] One inclined surface is arranged on the side of each of the two guide groove boxes 67 close to each other.

[0042] The opening and closing mechanism includes a guide rail 71, an electric slider 72, an opening and closing frame 73, a sliding frame 74, a vertical spring 75, a return frame 76 and an electric suction cup 77. Two guide rails 71 are installed on the inner top of the box body 1. Two electric sliders 72 are respectively and slidably arranged on the two guide rails 71. Two electric sliders 72 on different guide rails 71 and on the same straight line are taken as a group. An opening and closing frame 73 is connected between the two electric sliders 72 in each group. A sliding frame 74 is slidably arranged on each of the two opening and closing frames 73. A vertical spring 75 is connected between the sliding frame 74 on the same side and the opening and closing frame 73 on the same side. A return frame 76 is installed at the lower part of each of the two sliding frames 74. Four electric suction cups 77 are respectively installed on one side of the two return frames 76 close to each other. An arc-shaped rudder plate 42 is adsorbed between the four electric suction cups 77 on each side.

[0043] The operator first clips the rudder frame 41 onto the hollow positioning frame 51, and then controls the telescopic rods of the two electric push rods 54 to extend. The telescopic rods of the two electric push rods 54 drive the two connecting plates 55 to move. The two connecting plates 55 drive the two guide groove boxes 67 and the vertical plate 56 to move away from the connecting plate 53. The vertical plate 56 separates from the connecting plate 53. Initially, the return spring 62 is in a stretched state. When the first straight groove in the guide groove 68 moves to separate from the guide rollers on the guide roller frame 66, under the action of the return spring 62, the two vertical sliders 61, the two guide roller frames 66, the two clamping plates 63, the four top blocks 64, and the four top springs 65 will move towards each other. The four top blocks 64 can respectively contact the upper and lower side surfaces of the rudder frame 41. The four top blocks 64 will first move a certain distance away from each other, and the four top springs 65 are initially stretched. However, the mutually approaching sides of the two clamping plates 63 will not contact the upper and lower side surfaces of the rudder frame 41. Under the action of the four top blocks 64 and the four top springs 65, the rudder frame 41 can be preliminarily clamped. At this time, the guide rollers on the guide roller frame 66 and the second straight groove of the guide groove box 67 are on the same straight line. Then the operator controls the telescopic rods of the two electric push rods 54 to shorten. The telescopic rods of the two electric push rods 54 drive the two connecting plates 55 to move. The two connecting plates 55 drive the two guide groove boxes 67 and the vertical plate 56 to move towards the connecting plate 53. After the vertical plate 56 contacts the connecting plate 53, the vertical plate 56 drives the connecting plate 53, the hollow positioning frame 51, and the limiting frame 52 to move. When the hollow positioning frame 51 separates from the rudder frame 41, the telescopic rods of the two electric push rods 54 stop shortening; then the operator adsorbs an arc-shaped rudder plate 42 on each of the four electric suction cups 77 on the two opening and closing frames 73. The two arc-shaped rudder plates 42 are located on both sides of the rudder frame 41. Then the operator controls the two groups of electric sliders 72 to move towards each other. The two groups of electric sliders 72 drive the two opening and closing frames 73, the two sliding frames 74, the two vertical springs 75, the two loop-shaped frames 76, the eight electric suction cups 77, and the two arc-shaped rudder plates 42 to move towards each other. After the two arc-shaped rudder plates 42 are closed, they can wrap the rudder frame 41;Then, control the telescopic rods of the two electric push rods 54 to shorten again. The telescopic rods of the two electric push rods 54 drive the two connecting plates 55 to move. The two connecting plates 55 drive the two guide groove boxes 67 and the vertical plate 56 to move away from the fixed plate 3. After the inclined surfaces on the two guide groove boxes 67 contact the guide rollers on the two guide roller frames 66, the two guide roller frames 66 will drive the two vertical sliders 61, the two clamping plates 63, the four top blocks 64 and the four top springs 65 to move towards each other. The return spring 62 is compressed accordingly. The four top blocks 64 move away from each other again, and the four top springs 65 are stretched for the second time. The mutually approaching sides of the two clamping plates 63 will contact the upper and lower side surfaces of the rudder frame 41 and the two arc-shaped rudder plates 42. Under the action of the two sliding frames 74 and the two vertical springs 75, the two loop-shaped frames 76, the eight electric suction cups 77 and the two arc-shaped rudder plates 42 can move up and down to adjust their positions. In this way, the upper and lower sides of the two arc-shaped rudder plates 42 can be aligned with the upper and lower side surfaces of the rudder frame 41. Since the two clamping plates 63 do not completely block the rudder frame 41 and the two arc-shaped rudder plates 42, the operator can first weld the unblocked part gaps of the rudder frame 41 and the two arc-shaped rudder plates 42. After welding the positions, the relative positions of the rudder frame 41 and the two arc-shaped rudder plates 42 can be fixed; then the operator controls the eight electric suction cups 77 to release pressure. The eight electric suction cups 77 will separate from the two arc-shaped rudder plates 42, and then control the two groups of electric sliders 72 to move away from each other. The two groups of electric sliders 72 drive the two opening and closing frames 73, the two sliding frames 74, the two vertical springs 75, the two loop-shaped frames 76, and the eight electric suction cups 77 to move away from each other;Then the operator controls the telescopic rods of the two electric push rods 54 to shorten again. The telescopic rods of the two electric push rods 54 drive the two connecting plates 55 to move. The two connecting plates 55 drive the two guide groove boxes 67, the vertical plate 56, the connecting plate 53, the hollow positioning frame 51 and the limiting frame 52 to move. After the two guide groove boxes 67 are separated from the guide rollers on the two guide roller frames 66, under the action of the return spring 62, the two vertical sliders 61, the two guide roller frames 66, the two clamping plates 63, the four top blocks 64 and the four top springs 65 will move in the direction away from each other, so as to loosen the rudder frame 41 and the arc-shaped rudder plate 42 at the welded part. The operator takes out the rudder frame 41 and the arc-shaped rudder plate 42 at the welded part for secondary welding. At this time, the guide rollers on the two guide roller frames 66 and the second straight groove on the guide groove 68 are on the same straight line. The operator then controls the telescopic rods of the two electric push rods 54 to extend. The telescopic rods of the two electric push rods 54 drive the two connecting plates 55 to move. The two connecting plates 55 drive the two guide groove boxes 67, the vertical plate 56, the connecting plate 53, the hollow positioning frame 51 and the limiting frame 52 to move. The guide rollers on the two guide roller frames 66 will enter the second straight groove on the guide groove 68. After the guide rollers on the two guide roller frames 66 enter the first inclined groove on the guide groove 68, under the action of the first inclined groove, the two guide roller frames 66 will move in the direction away from each other. The two guide roller frames 66 drive the two vertical sliders 61, the two guide roller frames 66, the two clamping plates 63, the four top blocks 64 and the four top springs 65 to move in the direction away from each other. The return spring 62 is stretched accordingly. After the two guide roller frames 66 enter the first straight groove, the hollow positioning frame 51 and the limiting frame 52 move back to their positions. The limiting frame 52 contacts the side of the fixed plate 3. The telescopic rods of the two electric push rods 54 stop moving. By placing the rudder frame 41 on the hollow positioning frame 51, the rudder frame 41 can be preliminarily positioned. After the two arc-shaped rudder plates 42 are closed, then by moving the two clamping plates 63 in the direction close to each other, the sides of the two clamping plates 63 close to each other will contact the upper and lower side surfaces of the rudder frame 41 and the two arc-shaped rudder plates 42, so that the upper and lower sides of the two arc-shaped rudder plates 42 can be aligned with the upper and lower sides of the rudder frame 41, thereby improving the alignment accuracy and efficiency of the rudder frame 41 and the two arc-shaped rudder plates 42, and further improving the quality of the welded part of the rudder frame 41 and the two arc-shaped rudder plates 42.;

[0044] Embodiment 2: On the basis of Embodiment 1, as Figures 8-16As shown, it further includes an alignment mechanism. The alignment mechanism is arranged on the hollow positioning frame 51 and is used to align the rudder frame 41. The alignment mechanism includes an alignment frame 81, a roller 82, and a driving plate 83. Four alignment frames 81 are slidably arranged on the hollow positioning frame 51. The two upper alignment frames 81 form a group, and the two lower alignment frames 81 form a group. Two rollers 82 are provided on the side of each group of alignment frames 81 close to each other. The four rollers 82 are respectively connected to the four alignment frames 81. Two driving plates 83 are slidably arranged on the hollow positioning frame 51. Two driving grooves 84 are respectively formed on the two driving plates 83. One side of each of the two driving plates 83 is connected to the vertical plate 56.

[0045] Each driving groove 84 is composed of a vertical groove and an inclined groove 2. Each roller 82 is respectively located in the inclined groove 2 of each driving groove 84.

[0046] When the vertical plate 56 moves towards the fixed plate 3, the vertical plate 56 will drive the two driving plates 83 to move towards the fixed plate 3. Since the limiting frame 52 contacts one side of the fixed plate 3, the hollow positioning frame 51 is limited and does not move. Under the action of the inclined groove 2 of the driving groove 84, the four rollers 82 will move towards each other. The four rollers 82 drive the four alignment frames 81 to move towards each other. The four alignment frames 81 can contact both sides of the rudder frame 41, so as to preliminarily correct the position of the rudder frame 41, so that the rudder frame 41 and the two arc-shaped rudder plates 42 can fit more precisely, further improving the quality after welding the rudder frame 41 and the two arc-shaped rudder plates 42. After the roller 82 moves into the vertical groove of the driving groove 84, the four rollers 82 and the four alignment frames 81 no longer move. When the vertical plate 56 drives the two driving plates 83 to move away from the fixed plate 3, after the roller 82 moves into the inclined groove 2 of the driving groove 84, the four rollers 82 will move away from each other. The four rollers 82 drive the four alignment frames 81 to move away from each other. The four alignment frames 81 can be separated from both sides of the rudder frame 41.

[0047] Embodiment 3: On the basis of Embodiment 2, as Figure 1 、 Figure 2 、 Figure 9 、 Figure 10 、 Figure 12 、 Figure 15 and Figure 17As shown in the figure, it further includes a pressing mechanism. The pressing mechanism is arranged on the alignment frame 81 and the driving plate 83. The pressing mechanism is used to press the correction rudder frame 41. The pressing mechanism includes a rotating shaft 91, a pressing plate 92, a gear 93, a torsion spring 94, a rack 95, a vertical roller 96 and a pushing plate 97. A rotating shaft 91 is rotatably arranged on each alignment frame 81. A pressing plate 92 is fixedly installed in the middle of each rotating shaft 91. A gear 93 is fixedly installed on both sides of each rotating shaft 91. A torsion spring 94 is connected between the two sides of the two gears 93 away from each other and the inner side surfaces of both sides of the alignment frame 81. Two racks 95 are slidably arranged on each alignment frame 81. A number of tooth blocks are arranged on one side of the two racks 95 on the same alignment frame 81. The tooth blocks of the two racks 95 on the same alignment frame 81 are respectively engaged with the two gears 93 on the same alignment frame 81. A vertical roller 96 is rotatably connected between the other sides of the two racks 95 on the same alignment frame 81. A pushing plate 97 is fixedly installed on the side of the two driving plates 83 away from each other. The pushing plate 97 on the same side is located between the two vertical rollers 96 on the same side.

[0048] It further includes a limiting frame 10. Two limiting frames 10 are respectively installed on the lower parts of the inner side surfaces of both sides of the box body 1.

[0049] When the four alignment frames 81 move towards each other, they drive the eight racks 95 and the four vertical rollers 96 to move towards each other. The two vertical rollers 96 on the same side will contact the pushing plate 97 on the same side. After the roller 82 moves into the vertical groove of the driving groove 84, the two driving plates 83 drive the two pushing plates 97 to move away from the connecting plate 53. The two pushing plates 97 will push the four vertical rollers 96 to move away from the connecting plate 53. The four vertical rollers 96 drive the eight racks 95 to move away from the connecting plate 53. The eight racks 95 drive the eight gears 93 to rotate. The eight gears 93 drive the four pressing plates 92 to swing. The torsion spring 94 twists accordingly. The four pressing plates 92 can press the rudder frame 41, so as to be able to correct the position of the rudder frame 41 for the second time, so that the rudder frame 41 can fit more precisely with the two arc-shaped rudder plates 42, and further improve the quality after welding the rudder frame 41 and the two arc-shaped rudder plates 42; when the two driving plates 83 drive the two pushing plates 97 to move towards the connecting plate 53, the two pushing plates 97 will separate from the four vertical rollers 96. Under the action of the torsion spring 94, the four pressing plates 92 will swing and reset in the reverse direction. The swinging of the four pressing plates 92 drives the eight gears 93 to rotate in the reverse direction. The reverse rotation of the eight gears 93 drives the eight racks 95 to move and reset. When the four alignment frames 81 move away from each other, they drive the eight racks 95 and the four vertical rollers 96 to move away from each other. The two vertical rollers 96 on the same side will separate from the pushing plate 97 on the same side.

[0050] When adsorbing the arc-shaped rudder plate 42 onto the electric suction cup 77, the operator can make the bottom of the arc-shaped rudder plate 42 contact the limit frame 10, so that the operator can more accurately and quickly install the arc-shaped rudder plate 42 conveniently.

[0051] The technical principles of the embodiments of the present invention have been described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present invention and cannot be construed in any way as limiting the protection scope of the embodiments of the present invention. Based on the explanations herein, those skilled in the art can readily conceive of other specific implementation manners of the embodiments of the present invention without creative efforts, and these manners will all fall within the protection scope of the embodiments of the present invention.

Claims

1. A welding device for a streamlined rudder, characterized in that: It includes a box body (1), a frame (2), a fixing plate (3), a fixing mechanism, a clamping mechanism and an opening and closing mechanism. A frame (2) is fixedly installed at the inner bottom of the box body (1), a fixing plate (3) is vertically installed in the frame (2), a fixing mechanism is provided on the box body (1) and the fixing plate (3), and the fixing mechanism is used to fix the rudder carrier (41). A clamping mechanism is provided on the box body (1) and the fixing plate (3), and the clamping mechanism is used to clamp the rudder carrier (41). An opening and closing mechanism is provided on the box body (1), and the opening and closing mechanism is used to drive the arc-shaped rudder plate (42) to move; The fixing mechanism includes a hollow positioning frame (51), a limiting frame (52), a connecting plate (53), an electric push rod (54), a connecting plate (55) and a vertical plate (56). A hollow positioning frame (51) is slidably arranged in the middle of the fixing plate (3), a limiting frame (52) is fixedly installed on the hollow positioning frame (51), the limiting frame (52) is located on one side of the fixing plate (3), a connecting plate (53) is installed on one side of the hollow positioning frame (51), the connecting plate (53) is slidably connected with the frame (2). An electric push rod (54) is fixedly installed at the inner top and inner bottom of the box body (1) respectively. A connecting plate (55) is fixedly installed on the telescopic rods of the two electric push rods (54). A vertical plate (56) is connected between the two connecting plates (55). The vertical plate (56) is located between the hollow positioning frame (51) and the connecting plate (53), and the vertical plate (56) is in contact with one side of the connecting plate (53).

2. The welding device for a streamlined rudder according to claim 1, characterized in that: The clamping mechanism includes vertical sliders (61), return springs (62), clamping plates (63), top blocks (64), top springs (65), guide roller frames (66) and guide groove boxes (67). Two vertical sliders (61) are slidably arranged on the fixing plate (3), the two vertical sliders (61) are respectively located on the upper and lower sides of the hollow positioning frame (51), a return spring (62) is connected between the side of the two vertical sliders (61) close to each other and the fixing plate (3). A clamping plate (63) is fixedly installed on the side of the two vertical sliders (61) far from the vertical plate (56). The hollow positioning frame (51) is located between the two clamping plates (63). Two top blocks (64) are slidably arranged on the two clamping plates (63). Two top springs (65) are connected between the two top blocks (64) on the same side and the clamping plate (63) on the same side. The two top springs (65) are respectively wound around the two top blocks (64). A guide roller frame (66) is installed on the side of the two vertical sliders (61) far from each other. Two guide rollers are arranged on the side of the two guide roller frames (66) far from each other. A guide groove box (67) is installed on the side of the two connecting plates (55) close to each other. A guide groove (68) is opened on each of the two side surfaces in the two guide groove boxes (67).

3. The welding device for a streamlined rudder according to claim 2, characterized in that: Each guide groove (68) is composed of a first straight groove, a second straight groove and a first inclined groove. The first inclined groove is located between the first straight groove and the second straight groove. The guide roller on the guide roller frame (66) is located in the first straight groove of the guide groove (68).

4. A welding device for a streamlined rudder according to claim 2, characterized in that: An inclined surface is arranged on the side of the two guide groove boxes (67) close to each other.

5. The welding device for a streamlined rudder according to claim 4, characterized in that: The opening and closing mechanism includes a guide rail (71), an electric slider (72), an opening and closing frame (73), a sliding frame (74), a vertical spring (75), a return frame (76), and an electric suction cup (77). Two guide rails (71) are installed on the inner top of the box body (1). Two electric sliders (72) are respectively and slidably arranged on the two guide rails (71). Two electric sliders (72) on different guide rails (71) and on the same straight line form a group. An opening and closing frame (73) is connected between the two electric sliders (72) in each group. A sliding frame (74) is slidably arranged on each of the two opening and closing frames (73). A vertical spring (75) is connected between the sliding frame (74) on the same side and the opening and closing frame (73) on the same side. A return frame (76) is installed at the lower part of each of the two sliding frames (74). Four electric suction cups (77) are respectively installed on one side of the two return frames (76) close to each other. An arc-shaped rudder plate (42) is adsorbed between the four electric suction cups (77) on each side.

6. The welding device for a streamlined rudder according to claim 5, wherein: It further includes an alignment mechanism. The alignment mechanism is arranged on the hollow positioning frame (51). The alignment mechanism is used to align the rudder frame (41). The alignment mechanism includes an alignment frame (81), a roller (82), and a driving plate (83). Four alignment frames (81) are slidably arranged on the hollow positioning frame (51). The two alignment frames (81) above form a group, and the two alignment frames (81) below form a group. Two rollers (82) are arranged on one side of each group of alignment frames (81) close to each other. The four rollers (82) are respectively connected to the four alignment frames (81). Two driving plates (83) are slidably arranged on the hollow positioning frame (51). Two driving grooves (84) are respectively formed on the two driving plates (83). One side of each of the two driving plates (83) is connected to the vertical plate (56).

7. The welding device for a streamlined rudder according to claim 6, characterized in that: Each driving groove (84) is composed of a vertical groove and an inclined groove two. Each roller (82) is respectively located in the inclined groove two of each driving groove (84).

8. A welding device for a streamlined rudder according to claim 7, characterized in that: Further included is a pressing mechanism which is arranged on the alignment frame (81) and the driving plate (83). The pressing mechanism is used for pressing the correction rudder frame (41). The pressing mechanism includes a rotating shaft (91), a pressing plate (92), a gear (93), a torsion spring (94), a rack (95), a vertical roller (96) and a pushing plate (97). A rotating shaft (91) is rotatably arranged on each alignment frame (81). A pressing plate (92) is fixedly installed in the middle of each rotating shaft (91). A gear (93) is fixedly installed on both sides of each rotating shaft (91). A torsion spring (94) is connected between the side surfaces of the two gears (93) away from each other and the two inner side surfaces of the alignment frame (81). Two racks (95) are slidably arranged on each alignment frame (81). A number of tooth blocks are arranged on one side of the two racks (95) on the same alignment frame (81). The tooth blocks of the two racks (95) on the same alignment frame (81) are respectively engaged with the two gears (93) on the same alignment frame (81). A vertical roller (96) is rotatably connected between the other sides of the two racks (95) on the same alignment frame (81). A pushing plate (97) is fixedly installed on the side surfaces of the two driving plates (83) away from each other. The pushing plate (97) on the same side is located between the two vertical rollers (96) on the same side.

9. The welding device for a streamlined rudder according to claim 1, characterized in that: Further included is a limiting frame (10). Two limiting frames (10) are respectively installed on the lower parts of the two inner side surfaces of the box body (1).

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