Truss welding equipment

Abstract

The invention relates to the technical field of truss welding, and particularly discloses truss welding equipment which comprises a workbench, and supporting tables are fixedly mounted on the two sides of the top of the workbench correspondingly. The workbench comprises a horizontal moving mechanism used for horizontal movement, a feeding mechanism used for feeding, a clamping and fixing mechanism used for clamping and fixing, a supporting mechanism used for supporting, an angle adjusting mechanism used for adjusting the angle and a protection mechanism used for protection, and the angle adjusting mechanism comprises a servo motor. The servo motor is fixedly connected to one side of the L-shaped plate, an output shaft of the servo motor is fixedly sleeved with a small gear, and a gear ring is installed on the outer surface of the small gear in a meshed mode. When the angle of the spot welding gun is adjusted, a worker can adjust the spot welding gun at multiple angles through the angle adjusting mechanism, so that the spot welding gun adapts to truss structures of different shapes and sizes, various complex welding requirements are met, the accuracy of the welding position is ensured, the welding precision is greatly improved, and the universality of the device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of truss welding, and in particular relates to truss welding equipment. Background Art

[0002] Truss welding equipment is a kind of equipment that can quickly and accurately complete the welding work of each connection point of the truss through precise control and positioning. Compared with manual welding, it greatly saves time, can ensure the firmness and accuracy of welding, can meet the welding needs of large quantities of trusses, and provide a stable supply of trusses for the construction, machinery manufacturing and other industries.

[0003] Chinese patent: CN114147331B, proposes a full-angle industrial spot welding mechanism based on laser positioning, including a base, a rotating mechanism, a positioning mechanism, a spot welding mechanism, and a buffer mechanism. The bottom of the base is fixedly connected with a support leg, the base is provided with a rotating mechanism, the rotating mechanism is provided with a positioning mechanism, the base is provided with a spot welding mechanism, and the base is provided with a buffer mechanism; the spot welding mechanism includes a first cylinder, a base, a sliding sleeve, a sliding column, a welding gun, a laser transmitter, a second cylinder and a docking plate. The inner side of the base is provided with a first cylinder, the telescopic shaft of the first cylinder is fixedly connected with a base, the upper end of the base is fixedly connected with a sliding sleeve, and the sliding sleeve is slidably connected with a sliding column. The present invention relates to a full-angle industrial spot welding mechanism based on laser positioning, which has the characteristics of high efficiency, safety and reliability.

[0004] During use, the above patent has a relatively simple welding angle adjustment method, which makes it difficult to achieve multi-angle fine adjustment of workpieces of different shapes and sizes during welding, reducing the adaptability of the device, and insufficient protection for the spot welding mechanism. It lacks intelligent safety protection and may require more manual intervention during the feeding process. The degree of automation is low, which increases labor costs and operation time and reduces production efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a truss welding equipment to solve the problems in the prior art that the welding angle adjustment method is relatively single, it is difficult to achieve multi-angle fine adjustment of workpieces of different shapes and sizes during the welding process, the protection of the spot welding mechanism is insufficient, there is a lack of intelligent safety protection and the degree of automation in the feeding operation is low.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a truss welding device, comprising a workbench, support tables are fixedly installed on both sides of the top of the workbench, and the workbench comprises a horizontal movement mechanism for horizontal movement, a feeding mechanism for feeding, a clamping and fixing mechanism for clamping and fixing, a supporting mechanism for supporting, an angle adjustment mechanism for adjusting an angle, and a protective mechanism for protecting;

[0007] The angle adjustment mechanism includes a servo motor, which is fixedly connected to one side of the L-shaped plate, and the servo motor output shaft is fixedly sleeved with a pinion, and the outer surface of the pinion is meshingly installed with a gear ring, and the gear ring is fixedly sleeved on the outer surface of the turntable, and a plurality of cylinders are fixedly installed on the top of the turntable, and a plurality of cylinder telescopic shafts pass through the interior of the turntable and are fixedly connected to a second connecting block, and the second connecting block is rotatably connected to the inner wall of the U-shaped seat, and the bottom end of the U-shaped seat is fixedly connected to a lifting plate, and a second connecting rod is fixedly connected at the center of the top of the lifting plate, and the bottom end of the second connecting rod is fixedly connected to a mounting plate, and a spot welding gun is fixedly installed on the bottom end of the mounting plate.

[0008] Preferably: a protective shell is fixedly connected to the bottom end of the turntable, and grooves on both sides of the protective shell are rotatably connected to a rotating shaft, a transmission plate is fixedly connected to the inner outer surface of the rotating shaft, the top of the transmission plate is in contact with the bottom of the lifting plate, and an arc-shaped bottom plate is fixedly connected to the outer surface of the bottom end of the rotating shaft, and a transmission rod is fixedly connected to the outer side of both ends of the rotating shaft, one end of the transmission rod is movably connected to a second spring, and one end of the second spring is fixedly connected to the side wall of the protective shell.

[0009] Preferably: a third motor is provided on one side of the workbench, an output shaft of the third motor passes through the side wall of the protective shell and is fixedly sleeved with a first gear, a first transmission roller is fixedly sleeved inside the first gear, an outer surface of the first transmission roller is rotatably connected to a first conveyor belt, the first conveyor belt is rotatably connected to one end of the top of the workbench, a second gear is meshingly installed on the outer surface of the first gear, a rotating wheel is positioned and installed inside the second gear, a plurality of first springs are movably connected to the inner surface of the second gear, one end of a plurality of first springs is fixedly connected to the outside of one end of a block, the block is rotatably connected to the inside of the second gear with the other end as an axis, the inner surface of the block is in contact with the outer surface of the rotating wheel, a second transmission roller is fixedly sleeved inside the rotating wheel, a second transmission roller is rotatably connected to the outer surface of the second transmission roller, and the second conveyor belt is rotatably connected to the other end of the top of the workbench.

[0010] Preferably, the first transmission roller is symmetrically arranged about the center line of the first conveyor belt, and the second gear is symmetrically arranged about the center line of the second transmission roller.

[0011] Preferably: a first motor is fixedly installed at one end of the top of the workbench, the output shaft of the first motor passes through the end wall of the support platform and is fixedly sleeved with a first screw rod, the outer surface of the first screw rod is threadedly connected with a first screw sleeve, the top of the first screw sleeve is fixedly connected with a cam frame, a second motor is arranged on one side of the top of the cam frame, the output shaft of the second motor passes through the top wall of the cam frame and is fixedly sleeved with a second screw rod, and the outer surface of the second screw rod is threadedly connected with a second screw sleeve.

[0012] Preferably: L-shaped plates are fixedly connected on both sides of the second screw sleeve, a limited support groove is opened inside the turntable, and limited support blocks are fixedly connected at both ends of the bottom of the L-shaped plate, and the limited support blocks are slidably connected to the inner wall of the limited support groove.

[0013] Preferably: a connecting plate is fixedly connected to the inner side of the L-shaped plate, a support block is fixedly connected to the center of the bottom end of the connecting plate, the support block is slidably connected to the outer surface of the support rod, and both ends of the support rod are fixedly connected to the side walls of the L-shaped frame.

[0014] Preferably: a handwheel is provided on the other side of the workbench, a bidirectional screw is fixedly sleeved inside the handwheel, the bidirectional screw passes through the first connecting block and extends to the inside of the first connecting block on the other side, the top of the first connecting block is fixedly connected to the bottom of the workbench, the outer surfaces of both ends of the bidirectional screw are threadedly connected with a third screw sleeve, the top of the third screw sleeve is fixedly connected to the first connecting rod, the top of the first connecting rod passes through the middle notch of the workbench and is fixedly connected to a clamping plate.

[0015] Preferably, both ends of the workbench are provided with limiting grooves, and the bottoms of both ends of the clamping plate are fixedly connected to limiting rods, and the limiting rods are slidably connected to the inner walls of the limiting grooves.

[0016] Preferably, a slider is fixedly connected to the bottom end of one side of the shaped frame, the slider is slidably connected to the outer surface of the slide rod, and both ends of the slide rod are fixedly mounted on the inner wall of the support platform on the other side of the top of the workbench.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When adjusting the angle of the spot welding gun of the present invention, the staff can adjust the spot welding gun at multiple angles through the angle adjustment mechanism, thereby adapting to truss structures of different shapes and sizes, meeting various complex welding requirements, ensuring the accuracy of the welding position, greatly improving the welding accuracy, and improving the versatility of the device.

[0019] 2. In the process of the downward movement of the lifting plate of the present invention, the protective mechanism gradually opens, on the one hand, so that the spot welding gun is moved out from the inside of the protective mechanism, while preventing sparks and the like during the welding process from causing harm to personnel; on the other hand, when the spot welding gun is withdrawn into the inside of the protective mechanism, the protective mechanism gradually closes, wrapping the spot welding gun inside the protective mechanism, preventing external factors from causing damage to the spot welding gun, and further ensuring the safety of the equipment when it is not working.

[0020] 3. During the use of the present invention, the staff operates the feeding mechanism to, on the one hand, achieve the purpose of sending the trusses from the two ends of the workbench to the center of the workbench respectively, so as to prepare for the subsequent welding operation; on the other hand, when the welding is completed, under the sole action of the first conveyor belt, the welded trusses are smoothly transported from the center of the workbench to a specific end, thereby achieving the purpose of feeding and unloading, greatly improving the production efficiency, reducing the time and labor intensity of manual handling of the trusses, realizing automated material transportation, reducing the occurrence of safety accidents, and further improving the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a side view structural schematic diagram of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the local split structure;

[0023] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 4 It is a front structural schematic diagram of the present invention;

[0025] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 6 It is a front cross-sectional structural schematic diagram of the present invention;

[0027] Figure 7 It is a schematic diagram of a partial cross-sectional structure of the support mechanism and the angle adjustment mechanism in the present invention;

[0028] Figure 8 It is a schematic diagram of the side cross-sectional structure of the support mechanism and the angle adjustment mechanism in the present invention;

[0029] Fig. 9 It is a front cross-sectional structural schematic diagram of the angle adjustment mechanism and the protection mechanism in the present invention.

[0030] In the figure:

[0031] 1. Workbench; 2. Support table;

[0032] 3. Horizontal moving mechanism; 31. First motor; 32. First screw rod; 33. First screw sleeve; 34. Nipple frame; 35. Second motor; 36. Second screw rod; 37. Second screw sleeve; 38. Sliding rod; 39. Sliding block;

[0033] 4. Feeding mechanism; 41. Third motor; 42. Protective shell; 43. First gear; 44. First transmission roller; 45. First conveyor belt; 46. Second gear; 47. First spring; 48. Block; 49. Rotating wheel; 410. Second transmission roller; 411. Second conveyor belt;

[0034] 5. Clamping and fixing mechanism; 51. Hand wheel; 52. First connecting block; 53. Third screw sleeve; 54. Bidirectional screw rod; 55. First connecting rod; 56. Clamping plate; 57. Limit rod; 58. Limit groove;

[0035] 6. Support mechanism; 61. L-shaped plate; 62. Connecting plate; 63. Support block; 64. Support rod; 65. Position-limiting support block; 66. Position-limiting support groove;

[0036] 7. Angle adjustment mechanism; 71. servo motor; 72. pinion; 73. gear ring; 74. turntable; 75. cylinder; 76. second connecting block; 77. U-shaped seat; 78. lifting plate; 79. second connecting rod; 710. mounting plate;

[0037] 8. Protective mechanism; 81. Protective shell; 82. Rotating shaft; 83. Arc bottom plate; 84. Transmission plate; 85. Transmission rod; 86. Second spring;

[0038] 9. Spot welding gun. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Reference Figure 1-Figure 9 As shown, the present invention provides a truss welding device, including a workbench 1, with support tables 2 fixedly installed on both sides of the top of the workbench 1, and the workbench 1 includes a horizontal movement mechanism 3 for horizontal movement, a feeding mechanism 4 for feeding, a clamping and fixing mechanism 5 for clamping and fixing, a supporting mechanism 6 for supporting, an angle adjustment mechanism 7 for adjusting an angle, and a protection mechanism 8 for protection;

[0041] The angle adjustment mechanism 7 includes a servo motor 71, which is fixedly connected to one side of the L-shaped plate 61. The output shaft of the servo motor 71 is fixedly sleeved with a pinion 72. The outer surface of the pinion 72 is meshingly installed with a gear ring 73. The gear ring 73 is fixedly sleeved on the outer surface of a turntable 74. A plurality of cylinders 75 are fixedly installed on the top of the turntable 74. The telescopic shafts of the plurality of cylinders 75 pass through the inside of the turntable 74 and are fixedly connected with a second connecting block 76. The second connecting block 76 is rotatably connected to the inner wall of the U-shaped seat 77. The bottom end of the U-shaped seat 77 is fixedly connected with a lifting plate 78. The center of the top end of the lifting plate 78 is fixedly connected with a second connecting rod 79. The bottom end of the second connecting rod 79 is fixedly connected with a mounting plate 710. A spot welding gun 9 is fixedly installed at the bottom of the mounting plate 710.

[0042] In this embodiment, when it is necessary to adjust the spot welding angle, the staff starts the servo motor 71, and its output shaft drives the pinion 72 to rotate, and the pinion 72 drives the turntable 74 to rotate through the gear ring 73, so as to achieve the purpose of adjusting the rotation angle of the spot welding gun 9 in the horizontal direction. Then, a plurality of cylinders 75 are started, and their telescopic shafts push the U-shaped seat 77 to move downward through the second connecting block 76, and the lifting plate 78 at the bottom end of the U-shaped seat 77 will move accordingly. While the lifting plate 78 moves, the spot welding gun 9 is driven to move downward through the second connecting rod 79, so that the spot welding gun 9 leaves the protective mechanism 8 and approaches the welding part. When it is necessary to further adjust the spot welding angle, the air cylinder 75 is controlled to move downward. The extension and retraction of the telescopic shaft of the cylinder 75 causes the telescopic shaft of the cylinder 75 at one end of the lifting plate 78 to shrink and the telescopic shaft of the cylinder 75 at the other end of the lifting plate 78 to extend. When the second connecting block 76 is rotatably connected to the inner wall of the U-shaped seat 77, the two ends of the lifting plate 78 will move respectively with the cylinder 75 at their respective ends, thereby achieving the purpose of adjusting the rotation angle of the spot welding gun 9 in the vertical direction. This design can adjust the spot welding gun 9 at multiple angles through the angle adjustment mechanism 7, so as to adapt to truss structures of different shapes and sizes, meet various complex welding requirements, ensure the accuracy of the welding position, greatly improve the welding accuracy, and improve the versatility of the device.

[0043] In a further embodiment, referring to Figure 7-Figure 9 A protective shell 81 is fixedly connected to the bottom end of the turntable 74, and a rotating shaft 82 is rotatably connected to the notches on both sides of the protective shell 81. A transmission plate 84 is fixedly connected to the inner outer surface of the rotating shaft 82. The top of the transmission plate 84 contacts the bottom of the lifting plate 78. An arc-shaped bottom plate 83 is fixedly connected to the outer surface of the bottom end of the rotating shaft 82. A transmission rod 85 is fixedly connected to the outer side of both ends of the rotating shaft 82. One end of the transmission rod 85 is movably connected to a second spring 86, and one end of the second spring 86 is fixedly connected to the side wall of the protective shell 81.

[0044] In this embodiment, during the downward movement of the lifting plate 78, since the top of the transmission plate 84 contacts the bottom of the lifting plate 78, the lifting plate 78 will push the transmission plate 84 to move, and the movement of the transmission plate 84 drives the rotating shaft 82 to rotate. While the rotating shaft 82 rotates, on the one hand, it drives the arc bottom plate 83 to rotate, thereby opening the protective mechanism 8, so that the spot welding gun 9 is moved out from the inside of the protective mechanism 8, and at the same time prevents sparks during welding from causing harm to personnel, and on the other hand, it drives the transmission rod 85 to move, and the transmission rod 85 will compress the second spring 86. When the spot welding gun 9 is withdrawn into the protective mechanism 8, the lifting plate 78 moves upward and no longer applies a downward thrust to the transmission plate 84. Under the reset action of the second spring 86, the transmission rod 85 is pulled back, driving the rotating shaft 82 to rotate in the opposite direction, and the rotating shaft 82 drives the arc bottom plate 83 to rotate in the opposite direction, gradually closing the protective mechanism 8, and wrapping the spot welding gun 9 inside the protective mechanism 8, preventing external factors from damaging the spot welding gun 9, and further ensuring the safety of the equipment when it is not working.

[0045] In a further embodiment, referring to Figure 1-Figure 6 A third motor 41 is provided on one side of the workbench 1. The output shaft of the third motor 41 passes through the side wall of the protective shell 42 and is fixedly sleeved with a first gear 43. A first transmission roller 44 is fixedly sleeved inside the first gear 43. The outer surface of the first transmission roller 44 is rotatably connected with a first conveyor belt 45. The first conveyor belt 45 is rotatably connected to one end of the top of the workbench 1. A second gear 46 is meshed and installed on the outer surface of the first gear 43. A rotating wheel 49 is positioned and installed inside the second gear 46. A plurality of first springs 47 are movably connected to the inner surface of the second gear 46. One end of the plurality of first springs 47 is fixedly connected to the outer side of one end of a block 48. The block 48 is rotatably connected to the inside of the second gear 46 with the other end as an axis. The inner surface of the block 48 contacts the outer surface of the rotating wheel 49. A second transmission roller 410 is fixedly sleeved inside the rotating wheel 49. The outer surface of the second transmission roller 410 is rotatably connected with a second conveyor belt 411. The second conveyor belt 411 is rotatably connected to the other end of the top of the workbench 1.

[0046] In this embodiment, when the trusses need to be sent from the two ends of the workbench 1 to the center of the workbench 1 for welding, the third motor 41 is started, and its output shaft drives the first gear 43 to rotate, and the first gear 43 drives the first transmission roller 44 to rotate, and then drives the first conveyor belt 45 to operate, so that the truss at one end of the workbench 1 is driven by the first conveyor belt 45 to move toward the center of the workbench 1. When the first gear 43 rotates, it drives the second gear 46 to rotate. The clamping block 48 in the second gear 46 tightly clamps the rotating wheel 49 under the action of the first spring 47, so that the second gear 46 can drive the rotating wheel 49 to rotate. The rotation of the rotating wheel 49 drives the second transmission roller 410 to rotate, so that the second conveyor belt 411 operates, and the second conveyor belt 411 drives the truss at the other end of the workbench 1 to move toward the center of the workbench 1, thereby achieving the purpose of sending the trusses from the two ends of the workbench 1 to the center of the workbench 1, and preparing for the subsequent welding operation;

[0047] When welding is completed, the third motor 41 is started to reverse. At this time, the first gear 43 rotates in the opposite direction. The first gear 43 drives the first conveyor belt 45 to rotate in the opposite direction through the first transmission roller 44, and the truss is transported from the center of the workbench 1 to one end of the workbench 1. When the first gear 43 rotates in the opposite direction, it drives the second gear 46 to rotate in the opposite direction. At this time, the second gear 46 drives the clamping block 48 to move on the outer surface of the rotating wheel 49. Since the clamping block 48 cannot clamp the rotating wheel 49, the rotating wheel 49 does not rotate, and then the second conveyor belt 411 does not participate in the operation of sending the truss from the center of the workbench 1 to one end. Under the sole action of the first conveyor belt 45, the welded truss is smoothly transported from the center of the workbench 1 to a specific end, thereby achieving the purpose of feeding and discharging. This design greatly improves production efficiency, reduces the time and labor intensity of manual handling of trusses, realizes automated material transportation, reduces the occurrence of safety accidents, and further improves the safety of equipment.

[0048] In a further embodiment, referring to Figure 1-Figure 6 The first transmission roller 44 is symmetrically arranged about the center line of the first conveyor belt 45 , and the second gear 46 is symmetrically arranged about the center line of the second transmission roller 410 .

[0049] In this embodiment, the first transmission roller 44 is symmetrically arranged about the center line of the first conveyor belt 45, so that the first transmission roller 44 can evenly transmit power to both sides of the first conveyor belt 45 during rotation, and the second gear 46 is symmetrically arranged about the center line of the second transmission roller 410, so that it is more stable in the process of transmitting power to the rotating wheel 49, and when the second conveyor belt 411 is not needed to participate in feeding and discharging, the symmetrically arranged second gear 46 can also ensure that it remains stable without transmitting power, and does not affect the operation of the entire feeding mechanism 4.

[0050] In a further embodiment, referring to Figure 2, at one end of the top of the workbench 1, a first motor 31 is fixedly installed. The output shaft of the first motor 31 penetrates through the end wall of the support table 2 and is fixedly sleeved with a first lead screw 32. A first nut 33 is threadedly connected to the outer surface of the first lead screw 32. The top end of the first nut 33 is fixedly connected to a U-shaped frame 34. On one side of the top of the U-shaped frame 34, a second motor 35 is provided. The output shaft of the second motor 35 penetrates through the top wall of the U-shaped frame 34 and is fixedly sleeved with a second lead screw 36. A second nut 37 is threadedly connected to the outer surface of the second lead screw 36.

[0051] In this embodiment, when it is necessary to adjust the horizontal position of the welding torch, start the first motor 31. Its output shaft drives the first lead screw 32 to rotate. When the first lead screw 32 rotates, the first nut 33 will move along the axis direction of the first lead screw 32, and the U-shaped frame 34 will move along with the first nut 33. The movement of the U-shaped frame 34 drives the spot welding torch 9 to adjust its position in the left-right horizontal direction of the workbench 1 through the support mechanism 6 and the angle adjustment mechanism 7. Start the second motor 35. Its output shaft drives the second lead screw 36 to rotate. When the second lead screw 36 rotates, the second nut 37 will move along the axis direction of the second lead screw 36. The movement of the second nut 37 drives the spot welding torch 9 to adjust its position in the front-back horizontal direction of the workbench 1 through the support mechanism 6 and the angle adjustment mechanism 7, so as to realize the precise position adjustment of the welding torch in two mutually perpendicular horizontal directions to meet different welding requirements.

[0052] In a further embodiment, referring to Figure 6-Figure 7 , L-shaped plates 61 are fixedly connected to both sides of the second nut 37. A limit support groove 66 is formed inside the turntable 74. Limit support blocks 65 are fixedly connected to both ends of the bottom of the L-shaped plate 61. The limit support blocks 65 are slidably connected to the inner wall of the limit support groove 66.

[0053] In this embodiment, the limit support blocks 65 at both ends of the bottom of the L-shaped plate 61 are slidably connected to the limit support groove 66 formed inside the turntable 74, which plays a role in supporting the turntable 74 and guiding it during rotation.

[0054] In a further embodiment, referring to Figure 6-Figure 7 , a connecting plate 62 is fixedly connected to the inner side of the L-shaped plate 61. A support block 63 is fixedly connected to the center of the bottom end of the connecting plate 62. The support block 63 is slidably connected to the outer surface of the support rod 64. Both ends of the support rod 64 are fixedly connected to the side wall of the U-shaped frame 34.

[0055] In this embodiment, when the second screw sleeve 37 moves, it drives the L-shaped plates 61 on both sides to move, and the connecting plate 62 inside the L-shaped plate 61 also moves accordingly. When the connecting plate 62 moves, the support block 63 slides along the support rod 64, and the support rod 64 provides stable support and guidance for the sliding of the support block 63, ensuring the stability of related components during the movement, preventing shaking or deviation, and ensuring the accuracy and reliability of the horizontal position adjustment.

[0056] In a further embodiment, referring to Figure 6 A handwheel 51 is provided on the other side of the workbench 1, and a bidirectional screw rod 54 is fixedly sleeved inside the handwheel 51. The bidirectional screw rod 54 passes through the first connecting block 52 and extends to the first connecting block 52 on the other side. The top of the first connecting block 52 is fixedly connected to the bottom of the workbench 1. The outer surfaces of both ends of the bidirectional screw rod 54 are threadedly connected with a third screw sleeve 53. The top of the third screw sleeve 53 is fixedly connected to a first connecting rod 55. The top of the first connecting rod 55 passes through the notch in the middle of the workbench 1 and is fixedly connected to a clamping plate 56.

[0057] In this embodiment, when the truss needs to be clamped and fixed, the hand wheel 51 is rotated, and the hand wheel 51 drives the bidirectional screw rod 54 to rotate. When the bidirectional screw rod 54 rotates, the third screw sleeves 53 at both ends thereof will move toward the center of the bidirectional screw rod 54 along the screw rod axis direction. When the third screw sleeve 53 moves, the first connecting rod 55 also moves accordingly. The clamping plates 56 on both sides move closer to the truss as the first connecting rod 55 moves, thereby clamping and fixing the truss placed on the workbench 1. This design is convenient and quick to operate, reduces the difficulty of operation, and improves the versatility and adaptability of the equipment.

[0058] In a further embodiment, referring to Figure 1 Both ends of the workbench 1 are provided with limiting grooves 58 , and the bottoms of both ends of the clamping plate 56 are fixedly connected to limiting rods 57 , and the limiting rods 57 are slidably connected to the inner walls of the limiting grooves 58 .

[0059] In this embodiment, when the clamping plate 56 moves, the limiting rod 57 slides along the limiting groove 58 to ensure that the clamping plate 56 can only move in a specific direction. On the one hand, it limits the moving direction of the clamping plate 56. On the other hand, it provides certain support to the clamping plate 56 and shares part of the clamping force, thereby reducing the burden on the bidirectional screw rod 54 and the third screw sleeve 53.

[0060] In a further embodiment, referring to Figure 6 A slider 39 is fixedly connected to the bottom end of one side of the shaped frame 34, and the slider 39 is slidably connected to the outer surface of the slide rod 38. Both ends of the slide rod 38 are fixedly installed on the inner wall of the support platform 2 on the other side of the top of the workbench 1.

[0061] In this embodiment, when the bend frame 34 is moving, the slider 39 will slide along the slide rod 38, thereby limiting the moving direction of the bend frame 34, ensuring that the bend frame 34 can only move in a direction parallel to the axis of the first screw rod 32, and preventing the bend frame 34 from shifting or shaking during the movement.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A truss welding device, comprising a workbench (1), characterized in that: Support platforms (2) are fixedly installed on both sides of the top of the workbench (1), and the workbench (1) comprises a horizontal movement mechanism (3) for horizontal movement, a feeding mechanism (4) for feeding, a clamping and fixing mechanism (5) for clamping and fixing, a supporting mechanism (6) for supporting, an angle adjustment mechanism (7) for adjusting the angle, and a protection mechanism (8) for protection; The angle adjustment mechanism (7) comprises a servo motor (71), the servo motor (71) is fixedly connected to one side of the L-shaped plate (61), the output shaft of the servo motor (71) is fixedly sleeved with a pinion (72), the outer surface of the pinion (72) is meshingly mounted with a gear ring (73), the gear ring (73) is fixedly sleeved on the outer surface of a rotating disk (74), a plurality of cylinders (75) are fixedly mounted on the top of the rotating disk (74), the telescopic shafts of the plurality of cylinders (75) pass through the interior of the rotating disk (74) and are fixedly connected with a second connecting block (76), the second connecting block (76) is rotatably connected to the inner wall of a U-shaped seat (77), the bottom end of the U-shaped seat (77) is fixedly connected with a lifting plate (78), the top center of the lifting plate (78) is fixedly connected with a second connecting rod (79), the bottom end of the second connecting rod (79) is fixedly connected with a mounting plate (710), and the bottom end of the mounting plate (710) is fixedly mounted with a spot welding gun (9).

2. A truss welding device according to claim 1, characterized in that: The bottom end of the rotating disk (74) is fixedly connected to a protective shell (81), and notches on both sides of the protective shell (81) are rotatably connected to a rotating shaft (82). The inner outer surface of the rotating shaft (82) is fixedly connected to a transmission plate (84), and the top of the transmission plate (84) contacts the bottom of the lifting plate (78). The outer surface of the bottom end of the rotating shaft (82) is fixedly connected to an arc-shaped bottom plate (83). The outer sides of both ends of the rotating shaft (82) are fixedly connected to a transmission rod (85), and one end of the transmission rod (85) is movably connected to a second spring (86), and one end of the second spring (86) is fixedly connected to the side wall of the protective shell (81).

3. A truss welding device according to claim 1, characterized in that: A third motor (41) is arranged on one side of the workbench (1). The output shaft of the third motor (41) passes through the side wall of the protective shell (42) and is fixedly sleeved with a first gear (43). A first transmission roller (44) is fixedly sleeved inside the first gear (43). The outer surface of the first transmission roller (44) is rotatably connected to a first conveyor belt (45). The first conveyor belt (45) is rotatably connected to one end of the top of the workbench (1). A second gear (46) is meshingly installed on the outer surface of the first gear (43). A rotating wheel (49) is positioned and installed inside the second gear (46). The inner surface of the gear (46) is movably connected with a plurality of first springs (47), one end of each of the first springs (47) is fixedly connected to the outer side of one end of a clamping block (48), and the clamping block (48) is rotatably connected to the inside of the second gear (46) with the other end as an axis, and the inner surface of the clamping block (48) is in contact with the outer surface of a rotating wheel (49), and a second transmission roller (410) is fixedly sleeved inside the rotating wheel (49), and the outer surface of the second transmission roller (410) is rotatably connected to a second conveyor belt (411), and the second conveyor belt (411) is rotatably connected to the other end of the top of the workbench (1).

4. A truss welding device according to claim 3, characterized in that: The first transmission roller (44) is symmetrically arranged with respect to the center line of the first conveyor belt (45), and the second gear (46) is symmetrically arranged with respect to the center line of the second transmission roller (410).

5. The truss welding equipment according to claim 1, characterized in that: A first motor (31) is fixedly mounted on one end of the top of the workbench (1); an output shaft of the first motor (31) passes through the end wall of the support platform (2) and is fixedly sleeved with a first screw rod (32); a first screw sleeve (33) is threadedly connected to the outer surface of the first screw rod (32); a top of the first screw sleeve (33) is fixedly connected to a cam frame (34); a second motor (35) is arranged on one side of the top of the cam frame (34); an output shaft of the second motor (35) passes through the top wall of the cam frame (34) and is fixedly sleeved with a second screw rod (36); a second screw sleeve (37) is threadedly connected to the outer surface of the second screw rod (36).

6. A truss welding device according to claim 5, characterized in that: Both sides of the second screw sleeve (37) are fixedly connected to an L-shaped plate (61), a limit support groove (66) is provided inside the rotating disk (74), both ends of the bottom of the L-shaped plate (61) are fixedly connected to a limit support block (65), and the limit support block (65) is slidably connected to the inner wall of the limit support groove (66).

7. The truss welding equipment according to claim 1, characterized in that: A connecting plate (62) is fixedly connected to the inner side of the L-shaped plate (61), a supporting block (63) is fixedly connected to the center of the bottom end of the connecting plate (62), the supporting block (63) is slidably connected to the outer surface of a supporting rod (64), and both ends of the supporting rod (64) are fixedly connected to the side walls of the yoke (34).

8. The truss welding equipment according to claim 1, characterized in that: A hand wheel (51) is provided on the other side of the workbench (1), a bidirectional screw rod (54) is fixedly sleeved inside the hand wheel (51), the bidirectional screw rod (54) passes through the inside of the first connecting block (52) and extends to the inside of the first connecting block (52) on the other side, the top end of the first connecting block (52) is fixedly connected to the bottom of the workbench (1), the outer surfaces of both ends of the bidirectional screw rod (54) are threadedly connected to third screw sleeves (53), the top end of the third screw sleeve (53) is fixedly connected to a first connecting rod (55), the top end of the first connecting rod (55) passes through the middle notch of the workbench (1) and is fixedly connected to a clamping plate (56).

9. A truss welding device according to claim 8, characterized in that: Both ends of the workbench (1) are provided with limiting grooves (58), and the bottoms of both ends of the clamping plate (56) are fixedly connected to limiting rods (57), and the limiting rods (57) are slidably connected to the inner walls of the limiting grooves (58).

10. The truss welding equipment according to claim 5, characterized in that: A slider (39) is fixedly connected to the bottom end of one side of the shaped frame (34), and the slider (39) is slidably connected to the outer surface of the slide rod (38). Both ends of the slide rod (38) are fixedly mounted on the inner wall of the support platform (2) on the other side of the top of the workbench (1).

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