A welding machine for the construction skeleton of a building curtain wall

Abstract

The present invention belongs to the technical field of welding equipment, and in particular relates to a welding machine for the construction framework of building curtain walls, which includes a base, and also includes: an automatic welding mechanism, a pressurizing and stabilizing mechanism, multiple groups of positioning and locking mechanisms, a mechanism for adjusting the magnitude of the applied pressure, a mechanism for synchronously feedbacking the thickness of the framework, a welding current control mechanism, a welding speed control mechanism, and a PLC controller. The present invention can perform fast and stable automatic welding operations on the curtain wall framework, effectively improving the welding quality and welding efficiency, and can automatically adjust the magnitude of the welding current based on the thickness of the framework. When the increase degree of the welding current reaches the threshold value, the welding speed can be automatically reduced, so that more heat can act on the weld seam per unit time, ensuring that the weld seam is completely penetrated. During the welding process, additional pressure can be applied to ensure the stable contact of the transverse and longitudinal splicing members, ensuring the welding quality.

Description

Technical Field

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

[0002] A building curtain wall is a non-load-bearing exterior wall enclosure of a building, usually composed of a panel (such as glass, metal plate, stone plate, ceramic plate, etc.) and a supporting structure behind it (such as aluminum cross beams and columns, steel structure, glass ribs, etc.). The building curtain wall can enhance the aesthetic appearance of the building through different panel materials, colors, textures and shapes. It can make the building harmonious with the surrounding environment or highlight the individuality of the building.

[0003] In the process of the continuous development of the building curtain wall industry in China, the application of unitized curtain walls is becoming increasingly widespread. This type of curtain wall is processed and assembled in a factory environment and then transported to the construction site for installation. The unitized prefabricated curtain wall has many remarkable advantages. For example, its installation process is efficient and rapid, which can greatly shorten the construction period. At the same time, the floor area required during the construction process is small, effectively reducing the occupation of the construction site space. Based on these advantages, the unitized curtain wall has become a key technology commonly used in the field of building exterior wall decoration, providing strong support for the high-quality appearance presentation and efficient construction of modern buildings.

[0004] When the factory makes the framework of the prefabricated curtain wall, workers need to use a handheld welding torch to weld the intersection points of the curtain wall framework. This operation method not only easily leads to inconsistent welding quality at the welding points of the curtain wall framework, but also requires the workers to move their positions each time they weld a position, resulting in a relatively high labor intensity. When welding the curtain wall framework, the welding process is essentially a process of locally heating the material to make it melt and fuse. For thicker frameworks, more heat is required to ensure that the root of the weld can be completely penetrated. Since the conduction of heat in the material follows 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 reach the same internal temperature. Currently, the welding current is controlled based on the experience of the workers, 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 address the above problems and provide a welding machine for the construction framework of building curtain walls.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A welding machine for the construction framework of building curtain walls includes a base, and further includes:

[0007] An automatic welding mechanism, fixedly installed at the upper end of the base;

[0008] A pressurizing and stabilizing mechanism, mounted on the automatic welding mechanism;

[0009] A plurality of positioning and locking mechanisms are symmetrically fixed on the upper end of the base;

[0010] 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;

[0011] A synchronous feedback mechanism for the thickness of the skeleton is arranged in the pressure adjustment mechanism;

[0012] 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;

[0013] A welding speed control mechanism, which is installed in the welding current control mechanism and is electrically connected to the automatic welding mechanism;

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] In the above-mentioned construction curtain wall construction skeleton welding machine, the welding speed control mechanism includes two second side plates symmetrically and fixedly connected to one side of the upper end of the inner wall of the control shell. A speed feedback resistance rod is fixedly connected between the two second side plates. A plurality of guiding slide rods arranged side by side are also fixedly connected between the two second side plates. A same moving plate is slidably sleeved outside the plurality of guiding slide rods. A plurality of return springs sleeved outside the guiding slide rods are fixedly connected between the opposite sides of the moving plate and the second side plates. One end of the moving plate is fixedly connected with a speed feedback conductive contact piece in electrical contact with the speed feedback resistance rod. The moving plate is located above the lifting plate.

[0022] Compared with the existing technology, the beneficial effects of the present invention are as follows:

[0023] 1. Through the provided automatic welding mechanism, positioning and locking mechanism, skeleton thickness synchronous feedback mechanism, and welding current control mechanism, automatic welding operations on the curtain wall skeleton can be carried out quickly and stably, effectively improving the welding quality and efficiency, and the magnitude of the welding current can be automatically adjusted based on the thickness of the skeleton. The thicker the skeleton, the larger 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 energization time (t), that is, Q = I²Rt. During the welding process, a larger welding current can generate sufficient heat, enabling the thick skeleton material to reach the melting point in the welding area, thereby achieving good fusion and ensuring that more heat can completely penetrate the root of the weld.

[0024] 2. Through the provided automatic welding mechanism and welding speed control mechanism, when the thickness of the skeleton is too large and the increase in the welding current reaches the threshold value, the welding speed can be automatically reduced, enabling more heat to act on the weld in unit time and ensuring complete penetration of the weld.

[0025] 3. Through the provided pressurization and stabilization mechanism and the mechanism for adjusting the magnitude of the applied pressure, during the welding process, additional pressure can be applied to ensure stable contact between the transverse and longitudinal splicing members, ensuring the welding quality, and the magnitude of the applied pressure can be automatically adjusted based on the thickness of the skeleton. The larger the thickness of the skeleton, the greater the applied pressure, because a thicker skeleton requires a greater pressure to ensure that the current can pass evenly through the contact interface, generating uniform heat and effectively improving the welding quality. Brief Description of the Drawings

[0026] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 is a front view structural schematic diagram of the present invention;

[0028] Figure 3 is a structural schematic diagram of the automatic welding mechanism of the present invention;

[0029] Figure 4 is a schematic structural view of the pressure stabilizing mechanism of the present invention;

[0030] Figure 5 is a three-dimensional structural view of the positioning and locking mechanism of the present invention;

[0031] Figure 6 is a sectional structural view of the pressure magnitude adjusting mechanism and the skeleton thickness synchronous feedback mechanism of the present invention;

[0032] Figure 7 is a sectional structural view of the welding current control mechanism and the welding speed control mechanism of the present invention.

[0033] In the figure: 1 base, 2 automatic welding mechanism, 21 L-shaped support plate, 22 transverse electric slide rail, 23 longitudinal electric slide rail, 24 support frame, 25 linear motor, 26 U-shaped mounting plate, 27 welding head, 28 welding main machine, 3 pressure stabilizing mechanism, 31 anti-drop rod, 32 U-shaped fixing plate, 33 pressure roller, 34 connecting spring, 35 force-receiving permanent magnet plate, 36 force-applying electromagnetic plate, 4 positioning and locking mechanism, 41 positioning screw, 42 U-shaped pressing plate, 43 locking nut, 5 pressure magnitude adjusting mechanism, 51 adjusting shell, 52 limiting slide rod, 53 adjusting plate, 54 return spring, 55 pressing plate, 56 adjusting resistance rod, 57 adjusting frame, 58 adjusting conductive contact piece, 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 resistance rod, 74 transmission screw, 75 speed increasing sprocket assembly, 76 lifting plate, 77 linkage slide rod, 78 lifting seat, 79 current feedback conductive contact piece, 710 baffle plate, 711 compensation spring, 8 welding speed control mechanism, 81 second side plate, 82 speed feedback resistance rod, 83 guiding slide rod, 84 moving plate, 85 pushing-back spring, 86 speed feedback conductive contact piece, 9 PLC controller. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0035] As Figures 1-7 shown, a building curtain wall construction skeleton welding machine includes a base 1, and further includes:

[0036] The automatic welding mechanism 2 is fixedly installed at 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. Two transverse electric sliding rails 22 are symmetrically and fixedly connected to the lower ends of the horizontal part of the L-shaped support plate 21. The lower ends of the sliders in the two transverse electric sliding rails 22 are fixedly connected with two longitudinal electric sliding rails 23. The lower ends of the sliders in the two longitudinal electric sliding rails 23 are fixedly connected with the same support frame 24. Two linear motors 25 are symmetrically and fixedly inserted into the support frame 24. The lower ends of the mobile ends of the two linear motors 25 are fixedly connected with the same U-shaped mounting plate 26. Two welding heads 27 arranged at a 45-degree inclination are symmetrically and fixedly connected to the lower end of the U-shaped mounting plate 26. A welding host 28 is also installed at the upper end of the base 1. The welding heads 27 are connected to the welding host 28, which can perform fast and stable automatic welding operations on the curtain wall skeleton, effectively improving the welding quality and welding efficiency.

[0037] The pressure stabilizing mechanism 3 is installed on the automatic welding mechanism 2. The pressure stabilizing mechanism 3 includes multiple anti-drop rods 31 symmetrically and movably inserted into the horizontal part of the U-shaped mounting plate 26. The lower ends of the multiple anti-drop rods 31 are fixedly connected with the same U-shaped fixing plate 32. A pressure roller 33 is rotatably installed in the U-shaped fixing plate 32. A plurality of connecting springs 34 sleeved on the anti-drop rods 31 are fixedly connected to the opposite sides of the U-shaped fixing plate 32 and the U-shaped mounting plate 26. A stress permanent magnet plate 35 is fixedly installed at the upper end of the U-shaped fixing plate 32. A force-applying electromagnetic plate 36 arranged opposite to the stress permanent magnet plate 35 is fixedly installed at the lower end of the horizontal part of the U-shaped mounting plate 26. By applying additional pressure, it ensures the stable contact of the transverse and longitudinal splicing members, ensuring the welding quality of the skeleton.

[0038] Multiple groups of positioning and locking mechanisms 4 are symmetrically and fixedly installed at the upper end of the base 1. The positioning and locking mechanism 4 includes four positioning screws 41 symmetrically and fixedly installed at the upper end of the base 1. A U-shaped pressing plate 42 is movably inserted outside the four positioning screws 41. Locking nuts 43 are externally threaded on the rod walls of the positioning screws 41, which can stably limit the transverse and longitudinal splicing members forming the skeleton, avoiding displacement during welding and affecting the welding quality.

[0039] The pressing force magnitude adjusting mechanism 5 is fixedly installed at the upper end of the base 1, is in transmission connection with one set of positioning and locking mechanisms 4, and is electrically connected to the pressing and stabilizing mechanism 3. The pressing force magnitude adjusting mechanism 5 includes an adjusting shell 51 fixedly installed at the upper end of the base 1. A plurality of limiting sliding rods 52 arranged side by side are fixedly connected to the inner wall of the adjusting shell 51. The outer sides of the plurality of limiting sliding rods 52 are sleeved with the same adjusting plate 53. A plurality of reset springs 54 sleeved on the limiting sliding rods 52 are fixedly connected between the upper end of the adjusting plate 53 and the top of the inner wall of the adjusting shell 51. The side wall of one U-shaped pressing plate 42 is fixedly connected with a pressing plate 55 located above the adjusting plate 53. An adjusting resistance rod 56 parallel to the limiting sliding rods 52 is fixedly installed on the inner wall of the adjusting shell 51. One end of the adjusting plate 53 is fixedly connected with an adjusting frame 57 sleeved on the adjusting resistance rod 56. An adjusting conductive contact piece 58 in electrical contact with the adjusting resistance rod 56 is fixedly connected to the inner wall of the adjusting frame 57. The adjusting conductive contact piece 58 and the adjusting resistance rod 56 are connected in series in the power supply circuit of the force-applying electromagnetic plate 36, and can automatically adjust the magnitude of the pressing force based on the thickness of the skeleton. The greater the thickness of the skeleton, the greater the pressing force, because a thicker skeleton requires a greater pressure to ensure that the current can uniformly pass through the contact interface and generate uniform heat, effectively improving the welding quality.

[0040] The skeleton thickness synchronous feedback mechanism 6 is installed in the pressing force magnitude adjusting mechanism 5. The skeleton thickness synchronous feedback mechanism 6 includes a rotating screw rod 61 rotatably connected to the inner wall of the adjusting shell 51. A servo motor 62 for driving the rotating screw rod 61 to rotate self is fixedly installed on the outer wall of the adjusting shell 51. A synchronous plate 63 is threadedly sleeved on the rod wall of the rotating screw rod 61. A stop switch 64 opposite to the synchronous plate 63 is fixedly installed on one side of the adjusting frame 57.

[0041] The welding current control mechanism 7 is fixedly installed at the upper end of the base 1, is drivingly 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 housing 71 fixedly installed at the upper end of the base 1. On one side of the lower end of the inner wall of the control housing 71, two first side plates 72 are symmetrically and fixedly connected up and down. Between the two first side plates 72, a current feedback resistance rod 73 parallel to the rotating screw 61 is fixedly installed. The inner wall of the control housing 71 is rotatably connected to a transmission screw 74 parallel to the current feedback resistance rod 73. The transmission screw 74 and the rotating screw 61 are drivingly connected through a speed increasing sprocket assembly 75. A lifting plate 76 is threadedly sleeved on the rod wall of the transmission screw 74. One end surface of the lifting plate 76 is movably inserted with a plurality of linkage sliding rods 77 arranged side by side. The lower ends of the plurality of linkage sliding rods 77 are fixedly connected to the same lifting seat 78. One end of the lifting seat 78 is fixedly connected to a current feedback conductive contact piece 79 in electrical contact with the current feedback resistance rod 73. The upper ends of the plurality of linkage sliding rods 77 are fixedly connected to the same baffle 710. A plurality of compensation springs 711 sleeved on the linkage sliding rods 77 are fixedly connected between the opposite sides of the lifting plate 76 and the baffle 710, which can automatically adjust the magnitude of the welding current based on the thickness of the skeleton. The thicker the skeleton, the greater the welding current.

[0042] 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 and fixedly connected to one side of the upper end of the inner wall of the control housing 71. Between the two second side plates 81, the same speed feedback resistance rod 82 is fixedly connected. Between the two second side plates 81, a plurality of guide sliding rods 83 arranged side by side are also fixedly connected. A moving plate 84 is slidably sleeved on the plurality of guide sliding rods 83. A plurality of return springs 85 sleeved on the guide sliding rods 83 are fixedly connected between the opposite sides of the moving plate 84 and the second side plates 81. One end of the moving plate 84 is fixedly connected to a speed feedback conductive contact piece 86 in electrical contact with the speed feedback resistance rod 82. The moving plate 84 is located above the lifting plate 76, and can automatically reduce the welding speed when the thickness of the skeleton is too large and the increase degree of the welding current reaches the threshold value, so that more heat can act on the weld seam per unit time to ensure that the weld seam is completely penetrated.

[0043] The PLC controller 9 is fixedly installed at the upper end of the base 1 and is electrically controlled and connected to the automatic welding mechanism 2, the pressure stabilizing mechanism 3, the pressing force magnitude adjusting mechanism 5, the skeleton thickness synchronous feedback mechanism 6, the welding current control mechanism 7, and the welding speed control mechanism 8 respectively.

[0044] The operating principle of the present invention is described as follows: A plurality of horizontal splicing rods and vertical splicing rods are stacked together to form a frame structure. A plurality of sets of positioning and locking mechanisms 4 are used to firmly limit and fix the ends of the horizontal splicing rods and vertical splicing rods. The U-shaped pressing plate 42 is pressed against the end of the rod. The U-shaped pressing plate 42 is limited by the movable insertion connection between the U-shaped pressing plate 42 and the positioning screw 41, and then the limit locking of the U-shaped pressing plate 42 is realized through the connection between the locking nut 43 and the positioning screw 41;

[0045] 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 vertical connecting rod and multiple horizontal connecting rods, and then drives the welding heads 27 to move to the intersection position of the vertical connecting rod and the horizontal connecting rod through the vertical electric slide rail 23. The linear motor 25 pushes the welding heads 27 downward, so that the welding heads 27 move obliquely at an angle of 45 degrees to the weld position. The welding host 28 drives the welding heads 27 to perform rapid welding work on the vertical connecting rod and the horizontal connecting rod. During welding, the PLC controller 9 continuously controls the action of the vertical electric slide rail 23 to complete the full welding work at the weld of the intersection position of the vertical connecting rod and the horizontal connecting rod;

[0046] During welding, the PLC controller 9 controls the power supply device to supply power to the force-applying electromagnetic plate 36. The force-applying electromagnetic plate 36 is energized to generate the same magnetic field as the force-receiving permanent magnet plate 35, thereby driving the pressure roller 33 to provide a pressing force to the welding position and improving the welding quality;

[0047] Moreover, when initially fixing the horizontal connecting rod, 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, causing the adjusting plate 53 to move downward along the limit slide rod 52 against the elastic force of the return spring 54. The adjusting plate 53 drives the adjusting conductive contact piece 58 to synchronously slide on the adjusting resistance rod 56. Specifically, the greater the thickness of the frame, 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 distance that the adjusting conductive contact piece 58 slides on the adjusting resistance rod 56 is smaller, and thus the resistance value of the adjusting resistance rod 56 connected in is smaller. And the adjusting conductive contact piece 58 and the adjusting resistance rod 56 are connected in series in the power supply circuit of the force-applying electromagnetic plate 36, so that a larger current is supplied to the force-applying electromagnetic plate 36, and a greater pressing force is provided during welding to ensure the welding quality;

[0048] 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.

[0049] 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;

[0050] 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.

[0051] 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 pressure stabilization mechanism (3), the pressure adjustment mechanism (5), the frame thickness synchronous feedback mechanism (6), the welding current control mechanism (7) and the welding speed control mechanism (8); 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) are movably sleeved with a same U-shaped pressing plate (42); and the outer threads of the rod walls of the positioning screws (41) are sleeved with locking nuts (43); 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).

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 1, 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).

5. A building curtain wall construction skeleton welding machine according to claim 4, 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).

6. A building curtain wall construction skeleton welding machine according to claim 5, 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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