A sun umbrella base inside and outside synchronous welding device

Abstract

The application provides a sun umbrella base inside and outside synchronous welding device, which comprises a base, one end of the base is provided with a support seat, a coaxial arc-shaped supporting plate is fixed on the power shaft of a power motor, a magnetic plate is fixedly connected to one end of the fixed tube facing the power motor, the arc-shaped supporting plate and the fixed tube are connected through a synchronous transmission structure, a stand is fixed on the base and arranged on both sides of the supporting plate, a power cylinder is fixedly connected to the stand, an adjusting seat is fixedly connected to the power shaft of the power cylinder, the first motor and the second motor are arranged in parallel, the adjusting seat is fixedly connected to a fixed block between the first motor and the second motor, a U-shaped rod is rotatably connected to the fixed block, a fixed rod is rotatably connected to one end of the U-shaped rod away from the fixed block, a welding gun is fixedly connected to the fixed rod, and the first motor and the second motor are connected through an adjusting mechanism to adjust the position of the U-shaped rod, so that the stability and practicability of the welding structure are improved.

Description

Technical Field

[0001] This invention relates to welding apparatus, and more particularly to a device for simultaneous welding of the inner and outer sides of a parasol base. Background Technology

[0002] As people's living standards improve, they will choose to sunbathe on the beach and enjoy life, which requires the use of sun umbrellas.

[0003] A parasol mainly consists of a base, a support tube, and an umbrella canopy fixed above the support tube. The base and the support tube are connected by welding.

[0004] Currently, Chinese Patent CN207155161U discloses a welding device for welding pipes and flanges. The device includes a support, a fixed base, and an angle adjustment component. The support provides horizontal support for the pipe. The fixed base has a fixing surface for connecting the flange, with the fixing surface facing the pipe opening so that the flange's welding surface aligns with the pipe opening. The fixing surface is perpendicular to the central axis of the pipe. The angle adjustment component is located between the flange and the fixing surface and is used to adjust the angle between the plane of the flange and the central axis of the pipe. A sliding component is also provided at the bottom of the fixed base for adjusting its position.

[0005] This welding device can effectively adjust the pipe body and flange. After positioning the flange and pipe body, workers manually weld the outer wall of the pipe body and the edge of the flange, meaning it can only weld the exterior of the pipe body. When used for welding bases and support pipes, it can only weld the outer wall of the support pipe, resulting in poor structural stability and limited practicality, especially in windy coastal areas. Summary of the Invention

[0006] In view of this, the purpose of this invention is to provide a device for simultaneous welding of the inner and outer walls of a parasol base, which can simultaneously weld the outer and inner walls of the support tube, greatly improving structural strength and practicality.

[0007] To solve the above-mentioned technical problems, the technical solution of the present invention is: a synchronous welding device for the inner and outer sides of a sun umbrella base, comprising a base, a support seat at one end of the base, a power motor fixed on the support seat, a coaxially arranged arc-shaped support plate fixed on the power shaft of the power motor, a support plate fixed at the end of the base away from the support seat, a placement hole coaxially arranged with the arc-shaped support plate in the middle of the support plate, a fixing tube rotatably connected in the placement hole, a magnetic plate fixedly connected at the end of the fixing tube facing the power motor, and the arc-shaped support plate and the fixing tube being connected by a synchronous transmission structure. Both sides of the support plate are provided with columns fixed to the base. A power cylinder is fixedly connected to the column. An adjusting seat is fixedly connected to the power shaft of the power cylinder. A first motor and a second motor are fixedly connected to the adjusting seat. The first motor and the second motor are placed in parallel. A fixing block located between the first motor and the second motor is fixedly connected to the adjusting seat. A U-shaped rod is rotatably connected to the fixing block. A fixing rod is rotatably connected to the end of the U-shaped rod away from the fixing block. A welding torch is fixedly connected to the fixing rod. The first motor and the second motor adjust the position of the U-shaped rod through an adjusting mechanism.

[0008] To achieve the above technical solution, when the power motor starts, the fixed tube rotates synchronously with the arc-shaped support plate through a synchronous transmission structure, placing the support tube on the arc-shaped support plate. After the base is fitted onto the support tube, it is attracted to the magnetic plate. The first and second motors are turned on, and the U-shaped rod moves the welding gun through the adjustment mechanism to adjust the position of the welding gun so that the connection between the welding gun and the base and support tube is accurately aligned. Then, the power cylinder is turned on, and the welding gun located between the support plate and the power motor welds the outer wall of the support tube. The other welding gun passes through the fixed tube and the magnetic plate to weld the inner wall of the support tube. After the welding gun is started, the support tube can be welded to the base. When the power motor is turned on, the support tube and the base rotate synchronously, and the support tube and the base can be welded evenly. Moreover, the two welding guns work simultaneously, which greatly improves production efficiency. Since both the inner and outer sides of the support tube can be welded, the structural strength and practicality are greatly improved.

[0009] In a preferred embodiment of the present invention, the adjusting mechanism includes a first gear, a second gear, a third gear, a first gear ring, and a second gear ring. The first gear is fixed on the first rotating shaft of the first motor, the second gear is fixed on the second rotating shaft of the second motor, and the third gear is fixed on a fixed rod. The first gear ring and the second gear ring are located on opposite sides of the fixed block and are rotatably connected to the U-shaped rod. The first gear meshes with the side of the first gear ring away from the fixed block, the second gear meshes with the side of the second gear ring away from the fixed block, and the third gear meshes with both the first gear ring and the second gear ring.

[0010] To achieve the above technical solution, when the first and second motors start and the first and second rotating shafts rotate in the same direction, the first and second gear rings rotate in opposite directions, causing the third gear to rotate and thus causing the fixed rod and welding torch to flip left and right. When the first and second rotating shafts rotate in opposite directions, the first and second gear rings rotate in the same direction, causing the first and second gear rings to simultaneously apply force to the third gear, causing the U-shaped rod to rotate and connect to the fixed block. This allows the fixed rod and welding torch to flip up and down, enabling the welding torch to reach a hemispherical rotation stroke, allowing the welding torch to accurately weld support pipes of different sizes, thus improving practicality. Furthermore, due to the gear transmission, the rotation process of the welding torch is more stable, thereby improving welding accuracy and welding quality.

[0011] As a preferred embodiment of the present invention, the synchronous transmission structure includes a first sprocket, a second sprocket, a third sprocket, a fourth sprocket, a first chain, a second chain, and a linkage shaft. The linkage shaft is rotatably connected to the base. The second and third sprockets are fixed to the linkage shaft. The first sprocket is fixed to the drive shaft. The fourth sprocket is fixed to the fixed pipe. The first chain is tensioned by the first and second sprockets, and the second chain is tensioned by the third and fourth sprockets.

[0012] To achieve the above technical solution, when the power motor starts, the power shaft rotates, which drives the arc-shaped support plate to rotate synchronously; at the same time, the power shaft drives the first sprocket to rotate, the first sprocket drives the linkage shaft to rotate through the second sprocket, the linkage shaft drives the fourth sprocket to rotate through the third sprocket, the fourth sprocket drives the fixed tube to rotate, and the fixed tube drives the magnetic plate to rotate, thereby causing the base on the magnetic plate and the support tube on the arc-shaped support plate to rotate synchronously.

[0013] As a preferred embodiment of the present invention, the arc-shaped support plate is provided with an elastic positioning structure for contacting the end of the support tube.

[0014] To achieve the above technical solution, the support tube is placed on the arc-shaped support plate, and the support tube is positioned by applying elastic force through the elastic positioning structure, so that the support tube is not easy to shift along its own length direction, thereby improving the welding quality and preventing detachment.

[0015] As a preferred embodiment of the present invention, the elastic positioning structure includes a slide cylinder and a first elastic element. The slide cylinder is sleeved and slidably connected to the arc-shaped support plate. The two ends of the first elastic element are respectively fixedly connected to the inner wall of the slide cylinder and the power shaft. A guide arc surface is formed on the end face of the slide cylinder.

[0016] To achieve the above technical solution, the slide cylinder is opened, the support tube is placed on the arc-shaped support plate, the slide cylinder is released, and the elastic force of the first elastic element causes the slide cylinder to contact the end of the support tube. At the same time, the support tube and the base are pressed together.

[0017] As a preferred embodiment of the present invention, a receiving plate is fixedly connected between the arc-shaped support plate and the support plate. A receiving groove is provided in the middle of the receiving plate. Two receiving seats are provided on the outer wall of the receiving plate, respectively located on both sides of the receiving groove. A receiving wheel is rotatably connected to the receiving seat. The receiving wheel is close to the receiving groove. A protective ring made of rubber is fixedly connected to the outer wall of the receiving wheel.

[0018] To achieve the above technical solution, the support tube is placed on the arc-shaped support plate, the base is attached to the magnetic plate, and the middle of the support tube is supported by the receiving wheels to prevent the base from falling off the magnetic plate and causing the welding position to shift, thereby improving stability. In addition, the two receiving wheels can play a central positioning role, so that the position of the support tube is corrected when the support tube rotates, thereby improving the welding quality. The protective ring enhances the protection of the support tube to prevent the outer wall of the support tube from being damaged during the rapid rotation of the receiving wheels.

[0019] As a preferred embodiment of the present invention, the receiving plate is provided with a fine-tuning structure for adjusting the position of the two receiving seats. The fine-tuning structure includes a first threaded hole, a second threaded hole, a screw, and an adjusting motor. The first threaded hole and the second threaded hole are respectively opened on the two receiving seats and are arranged in opposite directions. The two ends of the screw are respectively threaded into the first threaded hole and the second threaded hole. The adjusting motor is fixed on the receiving plate and fixedly connected to the screw.

[0020] To achieve the above technical solution, after the motor starts, the screw rotates, and through the transmission effect of the first and second threaded holes, the two receiving seats can move synchronously towards or away from each other.

[0021] In a preferred embodiment of the present invention, a driven gear is fixedly connected to the linkage shaft, the driven gear is connected to the driven shaft through a reduction assembly, a cam is fixedly connected to the driven shaft, a horizontal plate is fixedly connected to the inner wall of the base, the driven shaft is rotatably connected to the horizontal plate, a groove is provided on the base near the arc-shaped support plate, a top plate for contacting the support tube is slidably connected in the groove, a connecting shaft is fixedly connected to the lower end of the top plate, and a connecting wheel that contacts the outer surface of the cam is rotatably connected to the connecting shaft.

[0022] To achieve the above technical solution, the driven gear rotates through the reducer assembly, and the driven shaft rotates once while the linkage shaft rotates multiple times. When the driven shaft drives the cam to rotate, the cam's protrusion lifts the connecting wheel. The connecting wheel then drives the top plate to move upward through the connecting shaft. After the top plate lifts the welded support tube, the elastic positioning structure supports the support tube, facilitating material unloading.

[0023] In a preferred embodiment of the present invention, a vertical plate is fixedly connected to the inner wall of the base, the vertical plate is located above the horizontal plate, a sound-generating structure is provided on the vertical plate, and the sound-generating structure is opened after the connecting shaft moves down with the top plate.

[0024] To achieve the above technical solution, after the top plate lifts the support pipe, the protrusion on the cam separates from the connecting wheel. Under the action of gravity, the top plate moves down. At this time, the sound-emitting structure is activated and emits a sound to remind the workers to remove the support pipe.

[0025] In a preferred embodiment of the present invention, the sound-generating structure includes a hook, a second elastic element, a fixing plate, a hanging groove, a first conductive sheet, a second conductive sheet, a power supply, and a sound generator. The lower end of the hook is rotatably connected to a connecting shaft. The first conductive sheet is fixed to the upper end of the hook. The fixing plate is fixedly connected to a vertical plate. The hanging groove is formed on the side wall of the fixing plate and corresponds to the upper end of the hook. The second conductive sheet is fixed to the hanging groove and is used to abut against the first conductive sheet. The two ends of the second elastic element are fixedly connected to the hook and the connecting shaft, respectively. The sound generator is connected to the first conductive sheet through a first wire. The power supply is connected to the sound generator through a second wire. The power supply is connected to the second conductive sheet through a third wire. A lever is fixedly connected to the lower end of the hook. A stop bar is fixedly connected to the outer wall of the cam for abutting against the lever.

[0026] To achieve the above technical solution, when the protrusion on the cam abuts against the connecting wheel, the connecting wheel rises. At the same time, due to the elastic force of the second elastic element, the upper end of the hook tilts towards the hanging groove. After the protrusion separates from the connecting wheel, the connecting wheel and the hook move down. At this time, the hook is hung in the hanging groove, the first conductive sheet and the second conductive sheet abut against each other, the circuit is open, and the power supply can supply power to the sound generator. The sound generator turns on and emits a sound to remind the worker to remove the welded support tube. As the cam continues to rotate, the stop rod on the cam abuts against the lever. The lever drives the hanging rod to flip, and the hanging rod disengages from the hanging groove. At this time, the connecting wheel and the top plate reset.

[0027] In summary, the present invention has the following beneficial effects:

[0028] It can simultaneously and synchronously weld the outer and inner walls of the support tube, thereby improving the structural stability between the support tube and the base.

[0029] By adjusting the mechanism, the welding torch can rotate left and right and up and down during the rotation of the first motor and the second motor in the same or opposite directions, so that the welding torch can be positioned at any point on the hemisphere, thereby greatly improving the welding accuracy and practicality.

[0030] It can weld support pipes of different outer diameters;

[0031] The installation process of the support tube and base on the device is convenient, improving production efficiency;

[0032] After the top rod lifts the support pipe, the hook is hung on the hanging slot, and the power supply can then power the sound generator to start it up and make a sound to remind the worker to remove the support pipe after welding is completed; thus, it is convenient for the worker to operate multiple welding devices at the same time.

[0033] The sound-generating structure opens and closes automatically, and the welding operations of the sound-generating structure and the support pipe are coordinated. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the external structure in the embodiment;

[0035] Figure 2 To illustrate the structure of the curved support plate;

[0036] Figure 3 for Figure 2 Enlarged view of point A;

[0037] Figure 4 To illustrate the structural diagram of the fixed tube;

[0038] Figure 5 To illustrate the structural diagram of the receiving plate;

[0039] Figure 6 for Figure 5 Enlarged view of point B;

[0040] Figure 7 This is a schematic diagram illustrating the connection structure between the base and the support tube;

[0041] Figure 8 To illustrate the structural diagram of the deceleration assembly;

[0042] Figure 9 To illustrate the structural diagram of the cam;

[0043] Figure 10 A schematic diagram illustrating the position and structure of the first conductive sheet.

[0044] Reference numerals: 1. Base; 10. Welding torch; 11. Support tube; 12. Base; 2. Support seat; 21. Power motor; 22. Power shaft; 23. Arc-shaped support plate; 3. Elastic positioning structure; 31. Slide cylinder; 32. First elastic element; 33. Guide arc surface; 4. Support plate; 41. Placement hole; 42. Bearing; 43. Fixing tube; 44. Magnetic plate; 5. Synchronous transmission structure; 51. First sprocket; 52. Second sprocket; 53. Third sprocket; 54. Fourth sprocket; 55. First chain; 56. Second chain; 57. Linkage shaft; 61. Column; 62. Power cylinder; 63. Telescopic shaft; 64. Adjusting seat; 65. First motor; 66. Second motor; 7. Adjusting mechanism; 71. First gear; 72. Second gear; 73. Third gear; 74. First gear ring; 75. Second gear ring; 76. Fixing block; 8. Receiving plate; 81. Receiving recess 82. Groove; 83. Receiving seat; 84. Receiving wheel; 9. Protective ring; 9. Fine-tuning structure; 91. First threaded hole; 92. Second threaded hole; 93. Screw; 94. Adjusting motor; 101. Driven gear; 102. Toothed belt; 103. First reduction gear; 104. Second reduction gear; 105. Third reduction gear; 106. Fourth reduction gear; 107. Driven shaft; 200. Horizontal plate; 201. Cam; 2011 1. Protrusion; 202. Slide groove; 203. Top plate; 204. Connecting shaft; 205. Connecting wheel; 300. Vertical plate; 301. Hook; 302. Second elastic element; 303. Fixing plate; 304. Hanging groove; 305. First conductive sheet; 306. Second conductive sheet; 307. Power supply; 308. Sound generator; 309. First wire; 310. Second wire; 311. Third wire; 401. Lever; 402. Stop lever. Detailed Implementation

[0045] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and mastered.

[0046] A synchronous welding device for the inner and outer sides of a parasol base 12 includes a base 1, a support base 2 fixedly connected to one end of the base 1, and a power motor 21, which is a servo motor, fixedly mounted on the support base 2. The power shaft 22 of the power motor 21 extends from both sides of the motor body. A coaxially arranged arc-shaped support plate 23 is fixed to one end of the power shaft 22, which supports the end of the support tube 11.

[0047] An elastic positioning structure 3 is provided on the arc-shaped support plate 23 for contacting the end of the support tube 11. This elastic positioning structure 3 includes a slide cylinder 31 and a first elastic element 32. The slide cylinder 31 is fitted onto and slidably connected to the arc-shaped support plate 23. The first elastic element 32 is a spring, with its two ends fixedly connected to the inner wall of the slide cylinder 31 and the power shaft 22, respectively. Through the elastic force of the first elastic element 32, the slide cylinder 31 tends to move away from the power motor 21.

[0048] A guide arc surface 33 is provided on the end face of the slide cylinder 31. After the end of the support tube 11 comes into contact with the guide arc surface 33, the slide cylinder 31 moves toward the direction of the power motor 21. After the support tube 11 is placed on the arc-shaped support plate 23, the elastic force of the first elastic member 32 makes the end of the slide cylinder 31 abut against the end of the support tube 11.

[0049] A vertically placed support plate 4 is fixed at the end of the base 1 away from the support base 2. A placement hole 41, coaxial with the arc-shaped support plate 23, is opened in the middle of the support plate 4. The placement hole 41 is coaxial with the power shaft 22. A fixing tube 43 is rotatably connected to the placement hole 41 via a bearing 42. The fixing tube 43 is also coaxial with the power shaft 22. A magnetic plate 44 is fixedly connected to the end of the fixing tube 43 facing the power motor 21. The magnetic plate 44 includes an iron plate and a magnet. The magnet is fixed inside the iron plate to make the iron plate magnetic, which is used to attract the base 12. Multiple threaded holes are opened on the surface of the magnetic plate 44. After the base 12 is attracted to the magnetic plate 44, a screw is passed through the base 12 and screwed onto the threaded holes to fix the base 12.

[0050] A synchronous transmission structure 5 connects the arc-shaped support plate 23 and the fixed tube 43. This synchronous transmission structure 5 enables the power shaft 22 and the magnetic plate 44 to rotate synchronously. The synchronous transmission structure 5 includes a first sprocket 51, a second sprocket 52, a third sprocket 53, a fourth sprocket 54, a first chain 55, a second chain 56, and a linkage shaft 57. The linkage shaft 57 is rotatably connected to the base 1 and is located directly below the support 2. The second sprocket 52 and the third sprocket 53 are fixed to both ends of the linkage shaft 57. The first sprocket 51 is fixed to the end of the power shaft 22 away from the arc-shaped support plate 23, and the first sprocket 51 is coaxially arranged with the power shaft 22. The fourth sprocket 54 is fixed to the fixed tube 43 and placed coaxially. The first chain 55 is tensioned through the first sprocket 51 and the second sprocket 52; the second chain 56 is tensioned through the third sprocket 53 and the fourth sprocket 54.

[0051] Among them, the outer diameters of the first sprocket 51, the second sprocket 52, the third sprocket 53, and the fourth sprocket 54 are all equal.

[0052] When the power motor 21 starts, the power shaft 22 rotates, and the first sprocket 51 drives the second sprocket 52 to rotate via a chain. The second sprocket 52 drives the third sprocket 53 to rotate via the linkage shaft 57. The third sprocket 53 drives the fourth sprocket 54 to rotate via the second chain 56, thereby causing the fourth sprocket 54 to drive the fixed tube 43 to rotate, and the fixed tube 43 drives the magnetic plate 44 to rotate. At this time, the base 12 and the support tube 11 can rotate synchronously.

[0053] On both sides of the support plate 4, there are columns 61 fixed to the base 1. Power cylinders 62 are fixedly connected to the columns 61 by screws, allowing for easy adjustment of the orientation of the power cylinders 62 before tightening them. An adjusting seat 64 is fixedly connected to the telescopic shaft 63 of the power cylinder 62. A first motor 65 and a second motor 66, placed side-by-side, are fixedly connected to the adjusting seat 64. Both the first motor 65 and the second motor 66 are servo motors.

[0054] A fixing block 76 is fixedly connected to the adjusting seat 64, located between the first motor 65 and the second motor 66. The end of the U-shaped rod passes through the fixing block 76 and is rotatably connected to the fixing block 76 via a bearing 42. A fixing rod is rotatably connected to the end of the U-shaped rod away from the fixing block 76. A welding torch 10 is fixedly connected to the fixing rod.

[0055] The first motor 65 and the second motor 66 adjust the position of the U-shaped rod via an adjusting mechanism 7. This adjusting mechanism 7 includes a first gear 71, a second gear 72, a third gear 73, a first gear ring 74, and a second gear ring 75. The first gear 71, second gear 72, and third gear 73 are all bevel gears. The first gear ring 74 and second gear ring 75 are also bevel gear rings. The first gear 71 is fixed to the first rotating shaft of the first motor 65, and the second gear 72 is fixed to the second rotating shaft of the second motor 66; the first gear 71 and second gear 72 are of equal size, and the first gear ring 74 and second gear ring 75 are of equal size. The third gear 73 is fixed to a fixed rod, directly opposite the fixed block 76.

[0056] The first gear ring 74 and the second gear ring 75 are located on both sides of the fixed block 76 and are rotatably connected to the U-shaped rod. The first gear 71 meshes with the side of the first gear ring 74 away from the fixed block 76, and the second gear 72 meshes with the side of the second gear ring 75 away from the fixed block 76. The third gear 73 simultaneously meshes with the opposite sides of the first gear ring 74 and the second gear ring 75.

[0057] When the first motor 65 and the second motor 66 start, and the first and second rotating shafts rotate in the same direction, the first gear ring 74 and the second gear ring 75 rotate in opposite directions, causing the third gear 73 to rotate and thus causing the fixed rod and welding torch 10 to flip left and right. When the first and second rotating shafts rotate in opposite directions, the first gear ring 74 and the second gear ring 75 rotate in the same direction, causing the first gear ring 74 and the second gear ring 75 to simultaneously apply force to the third gear 73, causing the U-shaped rod to rotate and connect to the fixed block 76, thereby allowing the fixed rod and welding torch 10 to flip up and down. This allows the welding torch 10 to achieve a hemispherical flipping stroke, enabling it to accurately weld support pipes 11 of different sizes, improving practicality; and because it is a gear transmission, the flipping process of the welding torch 10 is smoother, improving welding accuracy and welding quality.

[0058] A vertically placed receiving plate 8 is fixedly connected between the arc-shaped support plate 23 and the support plate 4, and the receiving plate 8 is located on the upper surface of the base 1. A receiving groove 81 is formed in the middle of the receiving plate 8, and two receiving seats 82 are respectively located on both sides of the receiving groove 81 on the outer wall of the receiving plate 8. A receiving wheel 83 is rotatably connected to the receiving seat 82, and the receiving wheel 83 is close to the receiving groove 81 and has a rubber protective ring 84 fixedly connected to its outer wall.

[0059] The receiving plate 8 is provided with a fine-tuning structure 9 for adjusting the position of the two receiving seats 82 to accommodate support tubes 11 with different outer diameters. The fine-tuning structure 9 includes a first threaded hole 91, a second threaded hole 92, a screw 93, and an adjusting motor 94. The first threaded hole 91 and the second threaded hole 92 are respectively formed on the two receiving seats 82 and arranged in opposite directions. The first threaded hole 91 and the second threaded hole 92 are coaxially arranged.

[0060] The two ends of the screw 93 are threaded into the first threaded hole 91 and the second threaded hole 92, respectively. The adjusting motor 94 is fixed on the receiving plate 8 and fixedly connected to the end of the screw 93. The adjusting motor 94 is also a servo motor.

[0061] When the adjusting motor 94 starts, the two receiving seats 82 move synchronously toward each other or toward each other through the transmission effect of the first threaded hole 91 and the second threaded hole 92, so as to adjust the distance between the two receiving wheels 83 to accommodate support pipes 11 with different outer diameters.

[0062] In summary, during use, the support tube 11 is first inserted into the base 12, and then the end of the support tube 11 away from the base 12 is placed on the arc-shaped support plate 23 after contacting the slide cylinder 31. The base 12 is then placed on the magnetic plate 44 and fixed with screws. The elastic force of the first elastic element 32 continuously applies a force to the support tube 11 in the direction closer to the base 12, thereby positioning the support tube 11. The receiving wheel 83 supports the middle part of the support tube 11.

[0063] When the power motor 21 is turned on, the support tube 11 and the base 12 rotate synchronously; when the power cylinder 62 is turned on, the welding gun 10 located between the receiving plate 8 and the support plate 4 welds the outer wall of the support tube 11; the welding gun 10 located on the side of the support plate 4 away from the receiving plate 8 passes through the fixed tube 43 and welds the inner wall of the support tube 11, and the two welding guns 10 weld synchronously, which greatly improves production efficiency and welding firmness, and enhances practicality.

[0064] Finally, to improve production efficiency, a driven gear 101 is fixedly connected to the linkage shaft 57. The driven gear 101 is connected to the driven shaft 107 via a reduction assembly. This reduction assembly includes a toothed belt 102, a first reduction gear 103, a second reduction gear 104, a third reduction gear 105, and a fourth reduction gear 106. The outer diameter of the first reduction gear 103 is larger than the outer diameter of the driven gear 101. The toothed belt 102 is tensioned through the first reduction gear 103 and the driven gear 101. The second reduction gear 104 and the first reduction gear 103 are both fixedly connected to the first reduction shaft. The outer diameter of the third reduction gear 105 is larger than the second reduction gear 104 and meshes with it. The third reduction gear 105 is fixed to the second reduction shaft. The fourth reduction gear 106 is fixed to the driven shaft 107 and meshes with the third reduction gear 105. The outer diameter of the fourth reduction gear 106 is larger than the outer diameter of the third reduction gear 105.

[0065] A horizontal plate 200 is fixedly connected to the inner wall of the base, and the aforementioned first reduction shaft, second reduction shaft and driven shaft 107 are all rotatably connected to the horizontal plate 200.

[0066] When the linkage shaft rotates multiple times, that is, when the support tube is welded multiple times, the driven shaft 107 rotates one revolution.

[0067] A cam 201 is fixedly connected to the driven shaft 107, and a groove 202 is provided on the base near the arc-shaped support plate; a top plate 203 for contacting the support tube is slidably connected in the groove 202. A connecting shaft 204 is fixedly connected to the lower end of the top plate 203, and a connecting wheel 205 that contacts the outer surface of the cam 201 is rotatably connected to the connecting shaft 204.

[0068] As the driven shaft 107 rotates, the cam 201's protrusion 2011 abuts against the connecting wheel 205, pushing the connecting wheel 205 upwards. The connecting wheel 205 then drives the top plate 203 upwards via the connecting shaft 204. The top plate 203 lifts the welded support tube upwards. After being lifted, the end of the support tube moves upwards along the guide arc surface on the slide cylinder. The elastic force of the first elastic element causes the slide cylinder to slide closer to the support tube. After the protrusion 2011 separates from the connecting wheel 205, the top plate 203 moves downwards, and the end of the support tube falls onto the guide arc surface. At this point, the support tube is tilted, meaning it falls onto the base after separating from the magnetic plate. This greatly facilitates workers in handling the support tube.

[0069] A vertical plate 300 is fixedly connected to the inner wall of the base; the vertical plate 300 is located above the horizontal plate 200. A sound-generating structure is provided on the vertical plate 300. This sound-generating structure includes a hook 301, a second elastic element 302, a fixing plate 303, a hanging groove 304, a first conductive sheet 305, a second conductive sheet 306, a power supply 307, and a sound generator 308. The lower end of the hook 301 is rotatably connected to the connecting shaft 204, and the first conductive sheet 305 is fixed to the upper end of the hook 301. The fixing plate 303 is fixedly connected to the surface of the vertical plate 300 and placed vertically. The hanging groove 304 is formed on the side wall of the fixing plate 303 and corresponds to the upper end of the hook 301. The second conductive sheet 306 is fixed to the hanging groove 304 and is used to abut against the first conductive sheet 305. The two ends of the second elastic element 302 are fixedly connected to the hook 301 and the connecting shaft 204 respectively, and the second elastic element 302 applies a force to the hook 301 in the direction of approaching the fixed plate 303.

[0070] Both the first conductive sheet 305 and the second conductive sheet 306 are copper sheets.

[0071] The sound generator 308 is connected to the first conductive plate 305 via a first wire 309, the power supply 307 is connected to the sound generator 308 via a second wire 310, and the power supply 307 is connected to the second conductive plate 306 via a third wire 311. When the first conductive plate 305 and the second conductive plate 306 come into contact, the circuit is complete, and the sound generator 308 can emit sound. Both the sound generator 308 and the power supply 307 are fixedly connected to the inner wall of the base.

[0072] A lever 401 is fixedly connected to the lower end of the hook 301, and a stop lever 402 for abutting against the lever 401 is fixedly connected to the outer wall of the cam 201.

[0073] As mentioned above, when the protrusion 2011 on the cam 201 abuts against the connecting wheel 205, the connecting wheel 205 rises. At the same time, due to the elastic force of the second elastic element 302, the upper end of the hook 301 tilts towards the hanging groove 304. After the protrusion 2011 separates from the connecting wheel 205, the connecting wheel 205 and the hook 301 move down. At this time, the hook 301 can be hung in the hanging groove 304. The first conductive sheet 305 and the second conductive sheet 306 abut against each other, the circuit is open, and the power supply 307 can supply power to the sound generator 308. The sound generator 308 turns on and emits a sound to remind the worker to remove the welded support tube.

[0074] Subsequently, the cam 201 continues to rotate, and the stop lever 402 on the cam 201 abuts against the lever 401. The lever 401 drives the hanging rod to flip, and the hanging rod disengages from the hanging groove 304. Due to gravity, the connecting wheel 205 continues to move down and abuts against the outer wall of the cam 201. At this time, the connecting wheel 205 resets and the top plate 203 resets.

[0075] The stop lever 402 is positioned opposite to the protrusion 2011 on the cam 201. For example, when the linkage shaft rotates two revolutions, the cam 201 rotates half a revolution so that the protrusion 2011 lifts the connecting wheel 205, and the support tube is automatically unloaded; as the linkage shaft continues to rotate two revolutions, the stop lever 402 abuts against the lever 401 and resets the top plate 203.

[0076] Of course, the above are just typical examples of the present invention. In addition, the present invention may have many other specific embodiments. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A device for synchronous welding of the inner and outer sides of a sun umbrella base, comprising a base, a support seat at one end of the base, and a power motor fixed on the support seat, characterized in that: A coaxially arranged arc-shaped support plate is fixed on the drive shaft of the power motor. A support plate is fixed to the end of the base away from the support seat. A placement hole coaxially arranged with the arc-shaped support plate is opened in the middle of the support plate. A fixing tube is rotatably connected to the placement hole. A magnetic plate is fixedly connected to the end of the fixing tube facing the power motor. The arc-shaped support plate and the fixing tube are connected by a synchronous transmission structure. Columns fixed to the base are set on both sides of the support plate. A power cylinder is fixedly connected to the column. An adjusting seat is fixedly connected to the drive shaft of the power cylinder. A first motor and a second motor are fixedly connected to the adjusting seat. The first motor and the second motor are placed parallel to each other. A fixing block located between the first motor and the second motor is fixedly connected to the adjusting seat. A U-shaped rod is rotatably connected to the fixing block. A fixing rod is rotatably connected to the end of the U-shaped rod away from the fixing block. A welding torch is fixedly connected to the fixing rod. The first motor and the second motor are connected by an adjusting... The linkage mechanism adjusts the position of the U-shaped rod. The synchronous transmission structure includes a first sprocket, a second sprocket, a third sprocket, a fourth sprocket, a first chain, a second chain, and a linkage shaft. The linkage shaft is rotatably connected to the base. The second and third sprockets are fixed to the linkage shaft. The first sprocket is fixed to the drive shaft, and the fourth sprocket is fixed to the fixed tube. The first chain is tensioned through the first and second sprockets, and the second chain is tensioned through the third and fourth sprockets. A driven gear is fixedly connected to the linkage shaft. The driven gear is connected to the driven shaft through a reduction assembly. A cam is fixedly connected to the driven shaft. A horizontal plate is fixedly connected to the inner wall of the base. The driven shaft is rotatably connected to the horizontal plate. A groove is provided on the base near the arc-shaped support plate. A top plate for contacting the support tube is slidably connected in the groove. A connecting shaft is fixedly connected to the lower end of the top plate. A connecting wheel that contacts the outer surface of the cam is rotatably connected to the connecting shaft.

2. The synchronous welding device for the inner and outer sides of a sun umbrella base according to claim 1, characterized in that: The adjusting mechanism includes a first gear, a second gear, a third gear, a first gear ring, and a second gear ring. The first gear is fixed on the first rotating shaft of the first motor, the second gear is fixed on the second rotating shaft of the second motor, and the third gear is fixed on the fixed rod. The first gear ring and the second gear ring are located on both sides of the fixed block and are rotatably connected to the U-shaped rod. The first gear meshes with the side of the first gear ring away from the fixed block, the second gear meshes with the side of the second gear ring away from the fixed block, and the third gear meshes with both the first gear ring and the second gear ring.

3. The synchronous welding device for the inner and outer sides of a sun umbrella base according to claim 1, characterized in that: The arc-shaped support plate is equipped with an elastic positioning structure for contacting the end of the support tube.

4. The synchronous welding device for the inner and outer sides of a sun umbrella base according to claim 3, characterized in that: The elastic positioning structure includes a slide cylinder and a first elastic element. The slide cylinder is sleeved and slidably connected to the arc-shaped support plate. The two ends of the first elastic element are fixedly connected to the inner wall of the slide cylinder and the power shaft, respectively. A guide arc surface is provided on the end face of the slide cylinder.

5. The synchronous welding device for the inner and outer sides of a sun umbrella base according to claim 1, characterized in that: A receiving plate is fixedly connected between the arc-shaped support plate and the support plate. A receiving groove is opened in the middle of the receiving plate. Two receiving seats are set on the outer wall of the receiving plate, which are located on both sides of the receiving groove. A receiving wheel is rotatably connected to the receiving seat. The receiving wheel is close to the receiving groove. A rubber protective ring is fixedly connected to the outer wall of the receiving wheel.

6. The synchronous welding device for the inner and outer sides of a sun umbrella base according to claim 5, characterized in that: The receiving plate is provided with a fine-tuning structure for adjusting the position of the two receiving seats. The fine-tuning structure includes a first threaded hole, a second threaded hole, a screw, and an adjusting motor. The first threaded hole and the second threaded hole are respectively opened on the two receiving seats and are arranged in opposite directions. The two ends of the screw are respectively threaded into the first threaded hole and the second threaded hole. The adjusting motor is fixed on the receiving plate and fixedly connected to the screw.

7. The synchronous welding device for the inner and outer sides of a sun umbrella base according to claim 1, characterized in that: A vertical plate is fixedly connected to the inner wall of the base. The vertical plate is located above the horizontal plate. A sound-generating structure is set on the vertical plate. The sound-generating structure is activated when the connecting shaft moves down with the top plate.

8. The synchronous welding device for the inner and outer sides of a sun umbrella base according to claim 7, characterized in that: The sound-generating structure includes a hook, a second elastic element, a fixing plate, a hanging groove, a first conductive sheet, a second conductive sheet, a power supply, and a sound generator. The lower end of the hook is rotatably connected to a connecting shaft. The first conductive sheet is fixed to the upper end of the hook. The fixing plate is fixedly connected to a vertical plate. The hanging groove is opened on the side wall of the fixing plate and corresponds to the upper end of the hook. The second conductive sheet is fixed on the hanging groove and is used to abut against the first conductive sheet. The two ends of the second elastic element are fixedly connected to the hook and the connecting shaft, respectively. The sound generator is connected to the first conductive sheet through a first wire. The power supply is connected to the sound generator through a second wire. The power supply is connected to the second conductive sheet through a third wire. A lever is fixedly connected to the lower end of the hook. A stop bar is fixedly connected to the outer wall of the cam for abutting against the lever.

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