Building curtain wall construction framework welding machine

Abstract

The invention belongs to the technical field of welding equipment, and particularly relates to a building curtain wall construction framework welding machine which comprises a base and further comprises an automatic welding mechanism, a pressurizing and stabilizing mechanism, a plurality of sets of positioning and locking mechanisms, a pressurizing force adjusting mechanism, a framework thickness synchronous feedback mechanism, a welding current control mechanism, a welding speed control mechanism and a PLC. The curtain wall framework can be subjected to rapid and stable automatic welding operation, the welding quality and the welding efficiency are effectively improved, the welding current can be automatically adjusted based on the thickness of the framework, the welding speed can be automatically reduced when the increase degree of the welding current reaches a threshold value, and the welding efficiency is improved. And more heat can act on a welding seam within unit time, it is ensured that the welding seam is completely fused, it can be ensured that transverse and longitudinal splicing rod pieces make contact stably by applying extra pressure in the welding process, and the welding quality is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, and in particular relates to a building curtain wall construction skeleton welding machine. Background Art

[0002] The building curtain wall is the non-load-bearing exterior wall enclosure of a building, usually composed of panels (glass, metal plates, stone slabs, ceramic plates, etc.) and the supporting structure behind (aluminum beams and columns, steel structures, glass ribs, etc.). The building curtain wall can enhance the appearance of the building through different panel materials, colors, textures and shapes. It can coordinate the building with the surrounding environment or highlight the personality of the building.

[0003] In the process of continuous development of my country's building curtain wall industry, the application of unitized curtain walls is becoming more and more extensive. This kind of curtain wall is processed and assembled in a factory environment, and then transported to the construction site for installation. Unitized prefabricated curtain walls have many significant advantages. For example, their installation process is efficient and fast, which can greatly shorten the construction period. At the same time, the construction process requires a small area, which effectively reduces the occupation of construction site space. Based on these advantages, unitized curtain walls have become a widely used key technology in the field of building exterior wall decoration, providing strong support for the high-quality appearance and efficient construction of modern buildings.

[0004] When the factory is making the skeleton of the prefabricated curtain wall, the workers are required to use a handheld welding gun to weld the intersections of the curtain wall skeleton. This operation method not only easily leads to uneven welding quality of the welding points of the curtain wall skeleton, but also the workers need to move once for welding a position, which is labor-intensive. When welding the curtain wall skeleton, the welding process is essentially a process of local heating to melt and fuse the material. For thicker skeletons, more heat is required to ensure that the root of the weld can be completely melted through, because the conduction of heat in the material has certain rules. Thicker materials will absorb and disperse more heat, just like heating a thin wooden board and a thick wooden board. The thick wooden board requires more heat to make the inside reach the same temperature. At present, the welding current is controlled based on the experience of the staff, and then the welding heat is controlled to ensure the welding quality. Manual operation is very inaccurate and affects the welding quality. Summary of the invention

[0005] The purpose of the present invention is to provide a building curtain wall construction skeleton welding machine in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical scheme: a building curtain wall construction skeleton welding machine, including a base, and also including: An automatic welding mechanism is fixedly mounted on the upper end of the base; A pressurizing and stabilizing mechanism, mounted on the automatic welding mechanism; A plurality of positioning and locking mechanisms are symmetrically fixed on the upper end of the base; A pressure adjustment mechanism is fixedly mounted on the upper end of the base, is transmission-connected to one set of the positioning and locking mechanisms, and is electrically connected to the pressure stabilization mechanism; A synchronous feedback mechanism for the thickness of the skeleton is arranged in the pressure adjustment mechanism; A welding current control mechanism is fixedly mounted on the upper end of the base, is transmission-connected to the frame thickness synchronization feedback mechanism, and is electrically connected to the automatic welding mechanism; A welding speed control mechanism, which is installed in the welding current control mechanism and is electrically connected to the automatic welding mechanism; The PLC controller is fixedly mounted on the upper end of the base and is electrically connected to the automatic welding mechanism, the pressurizing and stabilizing mechanism, the pressurizing force adjusting mechanism, the skeleton thickness synchronous feedback mechanism, the welding current control mechanism and the welding speed control mechanism.

[0007] In the above-mentioned building curtain wall construction skeleton welding machine, the automatic welding mechanism includes an L-shaped support plate fixedly connected to the rear side of the upper end of the base, the lower end of the horizontal part of the L-shaped support plate is symmetrically fixedly connected to two transverse electric slide rails, the lower ends of the sliders in the two transverse electric slide rails are fixedly connected to two longitudinal electric slide rails, the lower ends of the sliders in the two longitudinal electric slide rails are fixedly connected to the same support frame, the support frame has two linear motors symmetrically fixedly inserted, the lower moving ends of the two linear motors are fixedly connected to the same U-shaped mounting plate, the lower end of the U-shaped mounting plate is symmetrically fixedly connected to two welding heads inclined at 45 degrees, and a welding host is also installed on the upper end of the base, and the welding head is connected to the welding host.

[0008] In the above-mentioned building curtain wall construction skeleton welding machine, the pressure-adding and stabilizing mechanism includes a plurality of anti-slip rods symmetrically and movably inserted in the horizontal part of the U-shaped mounting plate, the lower ends of the plurality of anti-slip rods are fixedly connected to the same U-shaped fixing plate, a pressure roller is rotatably installed in the U-shaped fixing plate, a plurality of connecting springs sleeved outside the anti-slip rods are fixedly connected on the opposite side of the U-shaped fixing plate and the U-shaped mounting plate, a force-bearing permanent magnetic plate is fixedly installed on the upper end of the U-shaped fixing plate, and a force-adding electromagnetic plate arranged opposite to the force-bearing permanent magnetic plate is fixedly installed on the lower end of the horizontal part of the U-shaped mounting plate.

[0009] In the above-mentioned building curtain wall construction skeleton welding machine, the positioning and locking mechanism includes four positioning screws symmetrically fixedly installed on the upper end of the base, the four positioning screws are movably sleeved with the same U-shaped pressing plate, and the outer thread of the rod wall of the positioning screw is sleeved with a locking nut.

[0010] In the above-mentioned building curtain wall construction skeleton welding machine, the pressure adjustment mechanism includes an adjusting shell fixedly mounted on the upper end of the base, the inner wall of the adjusting shell is fixedly connected to a plurality of limit sliding rods arranged side by side, and the plurality of limit sliding rods are slidably sleeved with the same adjusting plate, the upper end of the adjusting plate and the top of the inner wall of the adjusting shell are fixedly connected to a plurality of return springs sleeved outside the limit sliding rod, one of the side walls of the U-shaped pressing plates is fixedly connected to a pressing plate located on the upper side of the adjusting plate, the inner wall of the adjusting shell is fixedly mounted with an adjusting resistor rod arranged parallel to the limit sliding rod, one end of the adjusting plate is fixedly connected to an adjusting frame sleeved outside the adjusting resistor rod, the inner wall of the adjusting frame is fixedly connected to an adjusting conductive contact electrically in contact with the adjusting resistor rod, and the adjusting conductive contact and the adjusting resistor rod are connected in series to the power supply circuit of the force electromagnetic plate.

[0011] In the above-mentioned building curtain wall construction frame welding machine, the frame thickness synchronous feedback mechanism includes a rotating screw rotatably connected to the inner wall of the adjusting shell, the outer wall of the adjusting shell is fixedly provided with a servo motor for driving the rotating screw to rotate, the rod wall of the rotating screw is threadedly sleeved with a synchronous plate, and one side of the adjusting frame is fixedly provided with a stop switch arranged opposite to the synchronous plate.

[0012] In the above-mentioned building curtain wall construction skeleton welding machine, the welding current control mechanism includes a control shell fixedly installed on the upper end of the base, and two first side plates are symmetrically fixedly connected to one side of the lower end of the inner wall of the control shell, and a current feedback resistor rod arranged in parallel with the rotating screw is fixedly installed between the two first side plates, and the inner wall of the control shell is rotatably connected with a transmission screw arranged in parallel with the current feedback resistor rod, and the transmission screw and the rotating screw are transmission-connected through a speed-increasing sprocket assembly, and a lifting plate is threadedly sleeved on the rod wall of the transmission screw, and a plurality of linkage sliding rods arranged side by side are movably sleeved on the surface of one end of the lifting plate, and the lower ends of the plurality of linkage sliding rods are fixedly connected to the same lifting seat, and one end of the lifting seat is fixedly connected to a current feedback conductive contact electrically contacting the current feedback resistor rod, and the upper ends of the plurality of linkage sliding rods are fixedly connected to the same baffle, and a plurality of compensation springs sleeved outside the linkage sliding rod are fixedly connected to the opposite side of the lifting plate and the baffle.

[0013] In the above-mentioned building curtain wall construction skeleton welding machine, the welding speed control mechanism includes two second side plates symmetrically fixedly connected to one side of the upper end of the inner wall of the control shell, a same speed feedback resistor rod is fixedly connected between the two second side plates, and a plurality of guide slide bars arranged side by side are also fixedly connected between the two second side plates, a same movable plate is slidably sleeved on the outside of the plurality of guide slide bars, a plurality of push-back springs sleeved on the outside of the guide slide bars are fixedly connected to the opposite side of the movable plate and the second side plate, a speed feedback conductive contact piece which is in electrical contact with the speed feedback resistor rod is fixedly connected to one end of the movable plate, and the movable plate is located on the upper side of the lifting plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the automatic welding mechanism, positioning locking mechanism, frame thickness synchronous feedback mechanism, and welding current control mechanism, the curtain wall frame can be welded quickly and stably, effectively improving the welding quality and efficiency, and can automatically adjust the welding current based on the thickness of the frame. The thicker the frame, the greater the welding current. According to Joule's law, the heat (Q) generated by the current passing through the conductor is proportional to the square of the current (I), the resistance (R) of the conductor, and the power-on time (t), that is, Q=I²Rt. During the welding process, a larger welding current can generate enough heat to make the thick frame material reach the melting point in the welding area, thereby achieving good fusion and ensuring that there is more heat to allow the root of the weld to be fully melted.

[0015] 2. Through the automatic welding mechanism and welding speed control mechanism, when the thickness of the frame is too large and the increase of the welding current reaches the threshold, the welding speed can be automatically reduced, so that more heat can act on the weld per unit time to ensure that the weld is completely melted.

[0016] 3. By setting up the pressurizing stabilizing mechanism and the pressurizing force adjusting mechanism, during the welding process, additional pressure can be applied to ensure the stable contact of the horizontal and vertical splicing rods and the welding quality, and the pressurizing force can be automatically adjusted based on the thickness of the skeleton. The thicker the skeleton, the greater the pressurizing force, because a thicker skeleton requires greater pressure to ensure that the current can pass through the contact interface evenly, generate uniform heat, and effectively improve the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a front view structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the automatic welding mechanism of the present invention; Figure 4 It is a structural schematic diagram of the pressurizing and stabilizing mechanism of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the positioning and locking mechanism of the present invention; Figure 6 It is a cross-sectional structural schematic diagram of the pressure adjustment mechanism and the frame thickness synchronous feedback mechanism of the present invention; Figure 7 It is a cross-sectional structural schematic diagram of the welding current control mechanism and the welding speed control mechanism of the present invention.

[0018] In the figure: 1 base, 2 automatic welding mechanism, 21 L-shaped support plate, 22 horizontal electric slide rail, 23 longitudinal electric slide rail, 24 support frame, 25 linear motor, 26 U-shaped mounting plate, 27 welding head, 28 welding host, 3 pressurizing and stabilizing mechanism, 31 anti-slip rod, 32 U-shaped fixing plate, 33 pressurizing roller, 34 connecting spring, 35 force-bearing permanent magnetic plate, 36 force-adding electromagnetic plate, 4 positioning and locking mechanism, 41 positioning screw, 42 U-shaped pressing plate, 43 locking nut, 5 pressure size adjustment mechanism, 51 adjustment shell, 52 limit slide rod, 53 adjustment plate, 54 reset spring, 55 pressing plate, 56 adjustment resistor rod, 57 adjustment Section frame, 58 adjusting conductive contact, 6 skeleton thickness synchronous feedback mechanism, 61 rotating screw, 62 servo motor, 63 synchronous plate, 64 stop switch, 7 welding current control mechanism, 71 control shell, 72 first side plate, 73 current feedback resistor rod, 74 transmission screw, 75 speed increasing sprocket assembly, 76 lifting plate, 77 linkage slide bar, 78 lifting seat, 79 current feedback conductive contact, 710 baffle, 711 compensation spring, 8 welding speed control mechanism, 81 second side plate, 82 speed feedback resistor rod, 83 guide slide bar, 84 moving plate, 85 push back spring, 86 speed feedback conductive contact, 9 PLC controller. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figure 1-Figure 7 As shown, a building curtain wall construction skeleton welding machine includes a base 1 and also includes: The automatic welding mechanism 2 is fixedly mounted on the upper end of the base 1. The automatic welding mechanism 2 includes an L-shaped support plate 21 fixedly connected to the rear side of the upper end of the base 1. The lower end of the horizontal part of the L-shaped support plate 21 is symmetrically fixedly connected to two transverse electric slide rails 22. The lower ends of the sliders in the two transverse electric slide rails 22 are fixedly connected to two longitudinal electric slide rails 23. The lower ends of the sliders in the two longitudinal electric slide rails 23 are fixedly connected to the same support frame 24. Two linear motors 25 are symmetrically fixedly sleeved on the support frame 24. The lower moving ends of the two linear motors 25 are fixedly connected to the same U-shaped mounting plate 26. The lower end of the U-shaped mounting plate 26 is symmetrically fixedly connected to two welding heads 27 inclined at 45 degrees. A welding host 28 is also installed on the upper end of the base 1. The welding head 27 is connected to the welding host 28, which can perform fast and stable automatic welding operations on the curtain wall frame, effectively improving the welding quality and welding efficiency.

[0021] The pressurizing and stabilizing mechanism 3 is installed on the automatic welding mechanism 2. The pressurizing and stabilizing mechanism 3 includes a plurality of anti-slip rods 31 symmetrically and movably inserted in the horizontal part of the U-shaped mounting plate 26. The lower ends of the plurality of anti-slip rods 31 are fixedly connected to the same U-shaped fixing plate 32. A pressurizing roller 33 is rotatably installed in the U-shaped fixing plate 32. The U-shaped fixing plate 32 and the U-shaped mounting plate 26 are fixedly connected on one side opposite to each other with a plurality of connecting springs 34 sleeved on the outside of the anti-slip rod 31. A force-bearing permanent magnet plate 35 is fixedly installed on the upper end of the U-shaped fixing plate 32. A force-bearing electromagnetic plate 36 arranged opposite to the force-bearing permanent magnet plate 35 is fixedly installed on the lower end of the horizontal part of the U-shaped mounting plate 26. The stable contact of the transverse and longitudinal splicing rods is ensured by applying additional pressure, thereby ensuring the quality of the skeleton welding.

[0022] A plurality of positioning and locking mechanisms 4 are symmetrically fixedly installed on the upper end of the base 1. The positioning and locking mechanisms 4 include four positioning screws 41 symmetrically fixedly installed on the upper end of the base 1. The four positioning screws 41 are movably inserted with a same U-shaped pressing plate 42. The rod wall of the positioning screws 41 is threadedly sleeved with a locking nut 43, which can firmly limit the transverse and longitudinal splicing rods constituting the skeleton to avoid displacement during welding affecting the welding quality.

[0023] The pressure adjustment mechanism 5 is fixedly mounted on the upper end of the base 1, and is transmission-connected to one of the positioning and locking mechanisms 4, and is electrically connected to the pressure stabilizing mechanism 3. The pressure adjustment mechanism 5 includes an adjustment shell 51 fixedly mounted on the upper end of the base 1, and the inner wall of the adjustment shell 51 is fixedly connected to a plurality of limit slide bars 52 arranged side by side, and the plurality of limit slide bars 52 are slidably sleeved with the same adjustment plate 53 outside, and the upper end of the adjustment plate 53 and the top of the inner wall of the adjustment shell 51 are fixedly connected to a plurality of return springs 54 sleeved outside the limit slide bars 52, and the side wall of one of the U-shaped pressing plates 42 is fixedly connected to a pressing plate 55 located on the upper side of the adjustment plate 53. An adjusting resistor rod 56 parallel to the limiting slide bar 52 is fixedly mounted on the inner wall of the adjusting shell 51; an adjusting frame 57 sleeved on the adjusting resistor rod 56 is fixedly connected to one end of the adjusting plate 53; an adjusting conductive contact 58 electrically in contact with the adjusting resistor rod 56 is fixedly connected to the inner wall of the adjusting frame 57; the adjusting conductive contact 58 and the adjusting resistor rod 56 are connected in series to the power supply circuit of the force electromagnetic plate 36, and can automatically adjust the size of the applied force based on the thickness of the skeleton. The thicker the skeleton, the greater the applied force, because a thicker skeleton requires greater pressure to ensure that the current can pass through the contact interface evenly, generate uniform heat, and effectively improve the welding quality.

[0024] The skeleton thickness synchronous feedback mechanism 6 is installed in the pressure adjustment mechanism 5. The skeleton thickness synchronous feedback mechanism 6 includes a rotating screw 61 rotatably connected to the inner wall of the adjustment shell 51. The outer wall of the adjustment shell 51 is fixedly provided with a servo motor 62 for driving the rotating screw 61 to rotate. The rod wall of the rotating screw 61 is threadedly sleeved with a synchronous plate 63. A stop switch 64 arranged opposite to the synchronous plate 63 is fixedly provided on one side of the adjustment frame 57.

[0025] The welding current control mechanism 7 is fixedly mounted on the upper end of the base 1, is transmission-connected to the skeleton thickness synchronous feedback mechanism 6, and is electrically connected to the automatic welding mechanism 2. The welding current control mechanism 7 includes a control shell 71 fixedly mounted on the upper end of the base 1, and two first side plates 72 are symmetrically fixedly connected to one side of the lower end of the inner wall of the control shell 71, and a current feedback resistor rod 73 arranged in parallel with the rotating screw 61 is fixedly mounted between the two first side plates 72. The inner wall of the control shell 71 is rotationally connected to a transmission screw 74 arranged in parallel with the current feedback resistor rod 73, and the transmission screw 74 and the rotating screw 61 are transmission-connected through a speed-increasing sprocket assembly 75. The rod wall of the transmission screw 74 is threadedly sleeved with a lifting plate 76, and a plurality of linked sliding rods 77 arranged side by side are movably sleeved on the surface of one end of the lifting plate 76. The lower ends of the plurality of linked sliding rods 77 are fixedly connected to the same lifting seat 78, and one end of the lifting seat 78 is fixedly connected to a current feedback conductive contact piece 79 which is in electrical contact with the current feedback resistor rod 73. The upper ends of the plurality of linked sliding rods 77 are fixedly connected to the same baffle 710, and a plurality of compensation springs 711 sleeved on the outside of the linked sliding rod 77 are fixedly connected to the opposite side of the lifting plate 76 and the baffle 710, which can automatically adjust the welding current based on the thickness of the skeleton. The thicker the skeleton, the greater the welding current.

[0026] The welding speed control mechanism 8 is installed in the welding current control mechanism 7 and is electrically connected to the automatic welding mechanism 2. The welding speed control mechanism 8 includes two second side plates 81 symmetrically fixedly connected to one side of the upper end of the inner wall of the control shell 71, and a same speed feedback resistor rod 82 is fixedly connected between the two second side plates 81. A plurality of guide slide bars 83 arranged side by side are also fixedly connected between the two second side plates 81. A same moving plate 84 is slidably sleeved on the outside of the plurality of guide slide bars 83. A plurality of push-back springs 85 sleeved on the outside of the guide slide bars 83 are fixedly connected to the moving plate 84 and the opposite side of the second side plate 81. A speed feedback conductive contact 86 that is in electrical contact with the speed feedback resistor rod 82 is fixedly connected to one end of the moving plate 84. The moving plate 84 is located on the upper side of the lifting plate 76. When the thickness of the skeleton is too large and the increase degree of the welding current reaches a threshold value, the welding speed can be automatically reduced, so that more heat can act on the weld per unit time to ensure that the weld is completely melted through.

[0027] The PLC controller 9 is fixedly mounted on the upper end of the base 1 and is electrically connected to the automatic welding mechanism 2, the pressurizing and stabilizing mechanism 3, the pressurizing force adjustment mechanism 5, the skeleton thickness synchronous feedback mechanism 6, the welding current control mechanism 7 and the welding speed control mechanism 8 respectively.

[0028] The operating principle of the present invention is described as follows: a plurality of transverse splicing rods and longitudinal splicing rods are stacked together to form a skeleton structure, and the ends of the transverse splicing rods and the longitudinal splicing rods are firmly limited and fixed by using a plurality of positioning and locking mechanisms 4, and a U-shaped pressing plate 42 is pressed on the end of the rod, and the U-shaped pressing plate 42 is limited by connecting the U-shaped pressing plate 42 with a movable sleeve of the positioning screw 41, and then the U-shaped pressing plate 42 is limited and locked by connecting the locking nut 43 and the positioning screw 41; During welding, the PLC controller 9 first controls the horizontal electric slide rail to drive the two welding heads 27 to move to the connection position of one of the longitudinal connecting rods and multiple transverse connecting rods, and then drives the welding head 27 to move to the intersection position of the longitudinal connecting rod and the transverse connecting rod through the longitudinal electric slide rail 23. The linear motor 25 pushes the welding head 27 downward, so that the welding head 27 moves to the welding seam position at a 45-degree tilt. The welding host 28 drives the welding head 27 to quickly weld the longitudinal connecting rod and the transverse connecting rod. During welding, the PLC controller 9 continuously controls the longitudinal electric slide rail 23 to complete the comprehensive welding work at the weld at the intersection position of the longitudinal connecting rod and the transverse connecting rod. During welding, the PLC controller 9 controls the power supply device to supply power to the force electromagnetic plate 36. The force electromagnetic plate 36 is energized to generate the same magnetism as the force permanent magnet plate 35, thereby driving the pressure roller 33 to provide a pressure to the welding position to improve the welding quality. When the transverse connecting rod is initially fixed, the pressing plate 55 on the side wall of one of the U-shaped pressing plates 42 will move downward synchronously, and the pressing plate 55 will press on the adjusting plate 53, so that the adjusting plate 53 moves downward along the limiting slide bar 52 to overcome the elastic force of the return spring 54, and the adjusting plate 53 drives the adjusting conductive contact 58 to slide synchronously on the adjusting resistor rod 56. Specifically, the greater the thickness of the skeleton, the higher the relative height of the pressing plate 55, and the shorter the distance that the pressing plate 55 can drive the adjusting plate 53 to move downward, so that the sliding distance of the adjusting conductive contact 58 on the adjusting resistor rod 56 is smaller, thereby making the access resistance value of the adjusting resistor rod 56 smaller, and the adjusting conductive contact 58 and the adjusting resistor rod 56 are connected in series to the power supply circuit of the force electromagnetic plate 36, thereby making the force electromagnetic plate 36 supply a larger current, so that a larger pressure is provided during welding to ensure the welding quality; Before the formal welding, the PLC controller 9 controls the servo motor 62 to operate, and the servo motor 62 drives the rotating screw 61 to rotate. The rotating screw 61 and the synchronous plate 63 are threadedly connected to make the synchronous plate 63 gradually move upward until the synchronous plate 63 presses on the stop switch 64 on the side wall of the adjustment frame 57. Then, the PLC controller 9 controls the servo motor 62 to stop operating. Specifically, when the thickness of the skeleton is greater, the distance between the synchronous plate 63 and the stop switch 64 is greater, so that the rotating screw 61 needs to rotate more times to make the synchronous plate 63 press on the stop switch 64. When the rotating screw 61 rotates, the transmission screw 74 is driven to rotate synchronously through the speed increasing sprocket assembly 75, and then the lifting plate 76 is synchronously moved up through the threaded sleeve effect of the transmission screw 74 and the lifting plate 76. The lifting plate 76 drives the lifting seat 78 to move up synchronously through the connection effect of the linkage slide rod 77 and the compensation spring 711, and the lifting seat 78 drives the current feedback conductive contact piece 79 to slide on the current feedback resistor rod 73. Specifically, when the thickness of the skeleton is greater, the lifting seat 78 drives the current feedback conductive contact piece 79 to slide on the current feedback resistor rod 73. The greater the sliding distance of the current feedback conductive contact piece 79 on the current feedback resistor rod 73, the smaller the access resistance of the current feedback resistor rod 73, and the current feedback conductive contact piece 79 and the current feedback resistor rod 73 are connected in series to the power supply circuit of the welding host 28, thereby increasing the welding current and ensuring the welding quality; When the thickness of the skeleton is too large, the welding requirements cannot be met when the welding current is adjusted to the maximum. Specifically, the upward movement distance of the lifting plate 76 is too large. When the lifting seat 78 drives the current feedback conductive contact 79 to slide to the highest position on the current feedback resistor rod 73, the lifting seat 78 is blocked by the first side plate 72. The continued upward movement of the lifting plate 76 will compress the compensation spring 711, and the lifting plate 76 will drive the moving plate 84 to move upward along the guide slide rod 83 to overcome the elastic force of the push-back spring 85, thereby causing the speed feedback conductive contact 86 to slide on the speed feedback resistor rod 82. The greater the sliding distance, the greater the access resistance of the speed feedback resistor rod 82, and the speed feedback conductive contact 86 and the speed feedback resistor rod 82 are connected in series to the power supply circuit of the longitudinal electric slide rail 23, thereby reducing the power supply current of the longitudinal electric slide rail 23 and reducing the transfer speed of the longitudinal electric slide rail 23, so that the welding speed can be reduced during welding, so that more heat can act on the weld per unit time to ensure that the weld is completely melted through.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A building curtain wall construction frame welding machine, comprising a base (1), characterized in that: Also includes: An automatic welding mechanism (2) fixedly mounted on the upper end of the base (1); A pressurizing and stabilizing mechanism (3) is mounted on the automatic welding mechanism (2); A plurality of positioning and locking mechanisms (4) are symmetrically fixedly mounted on the upper end of the base (1); A pressure adjustment mechanism (5) is fixedly mounted on the upper end of the base (1), is transmission-connected to one set of the positioning and locking mechanisms (4), and is electrically connected to the pressure stabilization mechanism (3); A skeleton thickness synchronous feedback mechanism (6) is arranged in the pressure adjustment mechanism (5); A welding current control mechanism (7) is fixedly mounted on the upper end of the base (1), is transmission-connected to the frame thickness synchronization feedback mechanism (6), and is electrically connected to the automatic welding mechanism (2); A welding speed control mechanism (8) is arranged in the welding current control mechanism (7) and is electrically connected to the automatic welding mechanism (2); A PLC controller (9) is fixedly mounted on the upper end of the base (1) and is electrically connected to the automatic welding mechanism (2), the pressurizing and stabilizing mechanism (3), the pressurizing force adjustment mechanism (5), the frame thickness synchronous feedback mechanism (6), the welding current control mechanism (7) and the welding speed control mechanism (8).

2. A building curtain wall construction skeleton welding machine according to claim 1, characterized in that: The automatic welding mechanism (2) comprises an L-shaped support plate (21) fixedly connected to the rear side of the upper end of the base (1); the lower end of the horizontal portion of the L-shaped support plate (21) is symmetrically fixedly connected to two transverse electric slide rails (22); the lower ends of the inner slide blocks of the two transverse electric slide rails (22) are fixedly connected to two longitudinal electric slide rails (23); the lower ends of the inner slide blocks of the two longitudinal electric slide rails (23) are fixedly connected to the same support frame (24); two linear motors (25) are symmetrically fixedly sleeved on the support frame (24); the lower movable ends of the two linear motors (25) are fixedly connected to the same U-shaped mounting plate (26); the lower end of the U-shaped mounting plate (26) is symmetrically fixedly connected to two welding heads (27) arranged at an angle of 45 degrees; a welding host (28) is also mounted on the upper end of the base (1); the welding head (27) is connected to the welding host (28).

3. A building curtain wall construction skeleton welding machine according to claim 2, characterized in that: The pressurizing and stabilizing mechanism (3) comprises a plurality of anti-slip rods (31) symmetrically and movably inserted into the horizontal portion of the U-shaped mounting plate (26); the lower ends of the plurality of anti-slip rods (31) are fixedly connected to the same U-shaped fixing plate (32); a pressurizing roller (33) is rotatably mounted in the U-shaped fixing plate (32); a plurality of connecting springs (34) sleeved outside the anti-slip rods (31) are fixedly connected to opposite sides of the U-shaped fixing plate (32) and the U-shaped mounting plate (26); a force-bearing permanent magnetic plate (35) is fixedly mounted on the upper end of the U-shaped fixing plate (32); and a force-bearing electromagnetic plate (36) arranged opposite to the force-bearing permanent magnetic plate (35) is fixedly mounted on the lower end of the horizontal portion of the U-shaped mounting plate (26).

4. A building curtain wall construction skeleton welding machine according to claim 3, characterized in that: The positioning and locking mechanism (4) comprises four positioning screws (41) symmetrically fixedly mounted on the upper end of the base (1), the four positioning screws (41) being movably sleeved with a same U-shaped pressing plate (42), and the outer threads of the rod walls of the positioning screws (41) being sleeved with locking nuts (43).

5. A building curtain wall construction skeleton welding machine according to claim 4, characterized in that: The pressure adjustment mechanism (5) comprises an adjustment shell (51) fixedly mounted on the upper end of the base (1); the inner wall of the adjustment shell (51) is fixedly connected to a plurality of limit slide bars (52) arranged side by side; the plurality of limit slide bars (52) are slidably sleeved with a same adjustment plate (53) outside; the upper end of the adjustment plate (53) and the top of the inner wall of the adjustment shell (51) are fixedly connected to a plurality of return springs (54) sleeved outside the limit slide bars (52); the side wall of one of the U-shaped pressing plates (42) is fixedly connected to a spring located at A pressing plate (55) is disposed on the upper side of the adjusting plate (53); an adjusting resistor rod (56) arranged parallel to the limit slide rod (52) is fixedly mounted on the inner wall of the adjusting shell (51); an adjusting frame (57) sleeved on the outside of the adjusting resistor rod (56) is fixedly connected to one end of the adjusting plate (53); an adjusting conductive contact piece (58) electrically contacting the adjusting resistor rod (56) is fixedly connected to the inner wall of the adjusting frame (57); and the adjusting conductive contact piece (58) and the adjusting resistor rod (56) are connected in series to the power supply circuit of the force electromagnetic plate (36).

6. A building curtain wall construction skeleton welding machine according to claim 5, characterized in that: The skeleton thickness synchronous feedback mechanism (6) comprises a rotating screw (61) rotatably connected to the inner wall of the adjustment shell (51); a servo motor (62) for driving the rotating screw (61) to rotate is fixedly mounted on the outer wall of the adjustment shell (51); a synchronous plate (63) is threadedly sleeved on the rod wall of the rotating screw (61); and a stop switch (64) arranged opposite to the synchronous plate (63) is fixedly mounted on one side of the adjustment frame (57).

7. A building curtain wall construction skeleton welding machine according to claim 6, characterized in that: The welding current control mechanism (7) comprises a control shell (71) fixedly mounted on the upper end of the base (1); two first side plates (72) are symmetrically fixedly connected to one side of the lower end of the inner wall of the control shell (71); a current feedback resistor rod (73) arranged parallel to the rotating screw rod (61) is fixedly mounted between the two first side plates (72); a transmission screw rod (74) arranged parallel to the current feedback resistor rod (73) is rotatably connected to the inner wall of the control shell (71); the transmission screw rod (74) and the rotating screw rod (61) are transmission-connected via a speed-increasing sprocket assembly (75); the transmission screw rod (74) is connected to the rotating screw rod (61) via a speed-increasing sprocket assembly (75); and the transmission screw rod (74) is connected to the rotating screw rod (61) via a speed-increasing sprocket assembly (75). ) is threadedly sleeved with a lifting plate (76), a plurality of linked sliding rods (77) arranged side by side are movably sleeved on one end surface of the lifting plate (76), the lower ends of the plurality of linked sliding rods (77) are fixedly connected to a same lifting seat (78), one end of the lifting seat (78) is fixedly connected to a current feedback conductive contact piece (79) electrically contacting the current feedback resistor rod (73), the upper ends of the plurality of linked sliding rods (77) are fixedly connected to a same baffle (710), and a plurality of compensation springs (711) sleeved outside the linked sliding rods (77) are fixedly connected to the opposite side of the lifting plate (76) and the baffle (710).

8. A building curtain wall construction skeleton welding machine according to claim 7, characterized in that: The welding speed control mechanism (8) comprises two second side plates (81) symmetrically fixedly connected to one side of the upper end of the inner wall of the control shell (71); a same speed feedback resistor rod (82) is fixedly connected between the two second side plates (81); a plurality of guide slide bars (83) arranged side by side are also fixedly connected between the two second side plates (81); a same movable plate (84) is slidably sleeved on the outside of the plurality of guide slide bars (83); a plurality of push-back springs (85) sleeved on the outside of the guide slide bars (83) are fixedly connected on the opposite side of the movable plate (84) and the second side plate (81); a speed feedback conductive contact piece (86) electrically contacting the speed feedback resistor rod (82) is fixedly connected to one end of the movable plate (84); the movable plate (84) is located on the upper side of the lifting plate (76).

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