A laser welding apparatus for a photovoltaic rack

Abstract

The present application relates to a kind of laser welding equipment for photovoltaic support, belong to photovoltaic support welding technical field, the laser welding equipment for photovoltaic support, including electrical box, welding mechanism, U-shaped steel and bottom plate, further include: conversion mechanism;Polishing mechanism;Blowing mechanism;Positioning mechanism;Test mechanism.The present application is polished by the setting of polishing mechanism, in the process that the assembled U-shaped steel and bottom plate are transported to the position of welding mechanism by the rotation of carousel, will make the polishing plate polish the lower end of U-shaped steel and the upper surface of bottom plate, remove the burr of U-shaped steel lower end due to cutting, shearing and other machining operations exist, and remove the impurities existing on the upper surface of bottom plate, and the lower end of U-shaped steel and the upper surface of bottom plate are polished flat, ensure the flatness of U-shaped steel and bottom plate contact part, so as to ensure that U-shaped steel can be welded vertically on bottom plate, guarantee that U-shaped steel and bottom plate after welding can satisfy welding requirement, improve the welding quality of U-shaped steel and bottom plate.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic support welding, and particularly relates to a laser welding device for a photovoltaic support. BACKGROUND

[0002] The laser welding of the photovoltaic support is an advanced manufacturing technology for welding the metal components of the photovoltaic support by using a high-energy-density laser beam; the welding of the photovoltaic support is mainly concentrated in the prefabrication link in the factory, and the column assembly with a bottom plate is the key component that is most commonly needed to be welded together on the production line; the column assembly with the bottom plate is usually made by welding a U-shaped steel column and a bottom plate into one body; the bottom plate is used for subsequent bolt connection or on-site welding with a foundation (pre-embedded part, steel pile top plate).

[0003] At present, when the bottom plate and the U-shaped steel column are welded, the U-shaped steel column needs to be welded at the center position of the bottom plate, so as to ensure the stability of the U-shaped steel column; however, since the end of the U-shaped steel column is provided with burrs due to cutting, shearing and other machining operations after the production of the U-shaped steel column is completed, the end surface of the U-shaped steel column is not a flat plane, and the U-shaped steel column with the uneven end is not in a vertical state with the bottom plate when being welded, so that the welded U-shaped steel column and the bottom plate cannot meet the welding requirements; based on this, the laser welding device for the photovoltaic support is provided. SUMMARY

[0004] The purpose of the application is to provide a laser welding device for a photovoltaic support with reasonable design to solve the above problems.

[0005] The application achieves the above purpose by the following technical scheme:

[0006] The laser welding device for the photovoltaic support comprises an electrical box, a controller, an electric sliding table, a sliding block, a welding mechanism, a U-shaped steel and a bottom plate, and further comprises:

[0007] A conversion mechanism fixedly connected to the top of the electrical box, wherein the bottom plate is placed in the conversion mechanism, and the conversion mechanism is used for rotating and conveying the bottom plate;

[0008] A polishing mechanism fixedly connected to the top of the electrical box, wherein the polishing mechanism is used for polishing the contact surface of the bottom plate and the U-shaped steel;

[0009] A blowing mechanism fixedly connected to the conversion mechanism, wherein the blowing mechanism is used for blowing the debris generated by polishing;

[0010] A positioning mechanism fixedly connected to the conversion mechanism and used for positioning the U-shaped steel;

[0011] A testing mechanism fixedly connected to the positioning mechanism and used for testing the welding strength of the U-shaped steel and the bottom plate.

[0012] As a further optimization scheme of the present application, the conversion mechanism comprises a stepper motor fixedly connected to the top of the electrical box, an output end of the stepper motor is fixedly connected with a rotating disc through a reduction box, a storage groove is formed in the rotating disc, a fixed frame is fixedly connected to the bottom of the rotating disc, an electric cylinder is fixedly connected to the fixed frame, an output end of the electric cylinder is fixedly connected with a push plate, the push plate is located in the storage groove, and a bottom plate is placed in the storage groove.

[0013] As a further optimization scheme of the present application, the polishing mechanism comprises a fixed ring fixedly connected to the top of the electrical box, a polishing plate is fixedly connected to the top of the fixed ring through bolts, the polishing plate is located on the top of the rotating disc, and the end of the polishing plate is inclined.

[0014] As a further optimization scheme of the present application, the positioning mechanism comprises a support frame fixedly connected to the top of the rotating disc, a telescopic rod is fixedly connected in the support frame, a positioning spring is sleeved on the telescopic rod, an end of the telescopic rod is fixedly connected with a connecting frame, both ends of the positioning spring are fixedly connected with the support frame and the connecting frame respectively, a positioning frame is fixedly connected to one side of the connecting frame, a positioning assembly is fixedly connected to the connecting frame, and a sliding groove is formed in the positioning frame.

[0015] As a further optimization scheme of the present application, the positioning assembly comprises a servo motor fixedly connected to the top of the connecting frame, an output end of the servo motor is fixedly connected with a threaded rod, the threaded rod penetrates through the connecting frame and is rotationally connected with the connecting frame, a sliding plate is threadedly connected to the threaded rod, the sliding plate is slidably connected with the connecting frame, a connecting column is fixedly connected to one side of the sliding plate, the connecting column penetrates through the sliding groove and is slidably connected with the sliding groove, and a positioning lug is fixedly connected to an end of the connecting column.

[0016] As a further optimization scheme of the present application, the blowing mechanism comprises a gas pump fixedly connected to the top of the rotating disc, an air suction end of the gas pump is fixedly connected with an air suction pipe, an air exhaust end of the gas pump is fixedly connected with an air exhaust pipe, and the air exhaust pipe is fixedly connected in the rotating disc.

[0017] As a further optimization scheme of the present application, the test mechanism comprises a push rod cylinder fixedly connected to the outer surface of the support frame, an output end of the push rod cylinder is fixedly connected with a test frame, a limiting plate is fixedly connected to the bottom of the test frame, a blowing groove is formed in the outer surface of the rotating disc, the limiting plate is slidably connected with the blowing groove, and the blowing groove is in communication with the inside of the air exhaust pipe.

[0018] As a further optimization scheme of the present application, the top of the electrical box is fixedly connected with an industrial camera, and the industrial camera is used to shoot pictures of the welding position between the U-shaped steel and the bottom plate when the test mechanism tests the welding strength of the U-shaped steel and the bottom plate.

[0019] As a further optimization scheme of the present application, the welding mechanism comprises a fixed seat fixedly connected to the top of the sliding block, a first mechanical arm rotatably connected to the top of the fixed seat, a second mechanical arm rotatably connected to one end of the first mechanical arm, a third mechanical arm rotatably connected to one end of the second mechanical arm, a fourth mechanical arm rotatably connected to one end of the third mechanical arm, and a laser welding head rotatably connected to one end of the fourth mechanical arm.

[0020] As a further optimization scheme of the present application, the controller is fixedly connected to the top of the electrical box, and the electric sliding table is fixedly connected to the top of the electrical box.

[0021] The present application has the following advantages:

[0022] 1. The present application is provided with a polishing mechanism. During the process of conveying the assembled U-shaped steel and the bottom plate to the position of the welding mechanism by rotating the turntable, the polishing plate polishes the lower end of the U-shaped steel and the upper surface of the bottom plate, removes burrs on the lower end of the U-shaped steel due to cutting, shearing and other machining operations, removes impurities on the upper surface of the bottom plate, and polishes the lower end of the U-shaped steel and the upper surface of the bottom plate flat, ensuring the flatness of the contact part of the U-shaped steel and the bottom plate, so that the U-shaped steel can be welded vertically on the bottom plate, and the welded U-shaped steel and bottom plate can meet the welding requirements, improving the welding quality of the U-shaped steel and the bottom plate.

[0023] 2. The present application is provided with a positioning mechanism. When assembling the U-shaped steel and the bottom plate, the U-shaped steel can be positioned and centered on the bottom plate, realizing the positioning of the U-shaped steel and the bottom plate, ensuring that the U-shaped steel is centered on the bottom plate, so that the welded U-shaped steel and bottom plate can provide stable support for the photovoltaic support, avoiding uneven bearing capacity of the bottom plate due to the U-shaped steel not being centered on the bottom plate, and preventing the photovoltaic support from collapsing.

[0024] 3. The present application is provided with a blowing mechanism, which can blow air to the polishing part of the polishing plate on the U-shaped steel and the bottom plate, remove the debris generated during polishing, avoid the debris generated during polishing remaining on the bottom plate, and affect the perpendicularity of the U-shaped steel on the bottom plate, so as to ensure the perpendicularity of the U-shaped steel welded on the bottom plate and ensure the welding quality. After welding is completed, the welding part of the U-shaped steel and the bottom plate can be cooled.

[0025] 4. The present application is provided with a testing mechanism, which can test the welding strength of the welded U-shaped steel and bottom plate, judge the welding quality, and classify the welded U-shaped steel and bottom plate according to the welding quality, thereby reducing the burden on personnel and improving the production efficiency of the U-shaped steel and the bottom plate. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall front three-dimensional structure of the present application;

[0027] Figure 2 is a schematic diagram of the three-dimensional partial cutaway back structure of the present application;

[0028] Figure 3 is a schematic diagram of the overall back three-dimensional structure of the present application; Figure 3 is a schematic diagram of the enlarged structure at A in the above figure;

[0029] Figure 4 is a schematic diagram of the three-dimensional structure of the conversion mechanism of the present application;

[0030] Figure 5 is a schematic diagram of the three-dimensional structure of the positioning mechanism of the present application;

[0031] Figure 6 is a schematic diagram of the three-dimensional partial cutaway structure of the positioning mechanism of the present application.

[0032] In the figure: 1, electrical box; 2, controller; 3, electric sliding table; 4, sliding block; 5, welding mechanism; 51, fixed seat; 52, first mechanical arm; 53, second mechanical arm; 54, third mechanical arm; 55, fourth mechanical arm; 56, laser welding head; 6, polishing mechanism; 61, fixed ring; 62, polishing plate; 7, conversion mechanism; 71, stepper motor; 72, rotating disc; 73, storage groove; 74, fixed frame; 75, electric cylinder; 76, push plate; 8, blowing mechanism; 81, air pump; 82, air suction pipe; 83, air exhaust pipe; 9, positioning mechanism; 91, support frame; 92, telescopic rod; 93, connecting frame; 94, positioning frame; 95, positioning spring; 96, servo motor; 97, threaded rod; 98, sliding plate; 99, connecting column; 910, positioning lug; 911, sliding groove; 10, testing mechanism; 101, push rod cylinder; 102, test frame; 103, limiting plate; 104, blowing groove; 11, industrial camera; 12, U-shaped steel; 13, bottom plate. DETAILED DESCRIPTION

[0033] It is necessary to point out here that the following detailed description is only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0034] Embodiment: as Figure 1 and Figure 2As shown, a laser welding device for photovoltaic support, including electrical box 1, controller 2, electric sliding platform 3, sliding block 4, welding mechanism 5, U-shaped steel 12 and bottom plate 13, the controller 2 is fixedly connected to the top of the electrical box 1, the electric sliding platform 3 is fixedly connected to the top of the electrical box 1, the sliding block 4 is slidingly connected to the outer surface of the electric sliding platform 3, the welding mechanism 5 is a six-axis mechanical arm, which is a prior art, the welding mechanism 5 includes a fixed seat 51 fixedly connected to the top of the sliding block 4, a first mechanical arm 52 rotatably connected to the top of the fixed seat 51, a motor installed at the part where the fixed seat 51 and the first mechanical arm 52 are rotatably connected, a second mechanical arm 53 rotatably connected to one end of the first mechanical arm 52, a motor installed at the part where the first mechanical arm 52 and the second mechanical arm 53 are rotatably connected, a third mechanical arm 54 rotatably connected to one end of the second mechanical arm 53, a motor installed at the part where the second mechanical arm 53 and the third mechanical arm 54 are rotatably connected, a fourth mechanical arm 55 rotatably connected to one end of the third mechanical arm 54, a motor installed at the part where the third mechanical arm 54 and the fourth mechanical arm 55 are rotatably connected, a laser welding head 56 rotatably connected to one end of the fourth mechanical arm 55, a motor installed at the part where the fourth mechanical arm 55 and the laser welding head 56 are rotatably connected, the first mechanical arm 52, the second mechanical arm 53, the third mechanical arm 54, the fourth mechanical arm 55, the electric sliding platform 3 and the sliding block 4 are provided to facilitate the movement of the laser welding head 56 to each direction, thereby ensuring accurate welding of the U-shaped steel 12 and the bottom plate 13, a conversion mechanism 7 is fixedly connected to the top of the electrical box 1, the bottom plate 13 is placed in the conversion mechanism 7, and the conversion mechanism 7 is used to rotate and convey the bottom plate 13, the conversion mechanism 7 includes a stepper motor 71 fixedly connected to the top of the electrical box 1, a turntable 72 fixedly connected to the output end of the stepper motor 71 through a speed reducer, a storage groove 73 is formed in the turntable 72, a fixed frame 74 is fixedly connected to the bottom of the turntable 72, an electric cylinder 75 is fixedly connected to the fixed frame 74, a push plate 76 is fixedly connected to the output end of the electric cylinder 75, the push plate 76 is located in the storage groove 73, and the bottom plate 13 is placed in the storage groove 73.

[0035] In use, first assemble the bottom plate 13 and the U-shaped steel 12, then place the assembled bottom plate 13 and U-shaped steel 12 in the storage groove 73, at this time the bottom plate 13 slightly protrudes out of the storage groove 73, then the stepper motor 71 can be started to rotate the assembled bottom plate 13 and U-shaped steel 12 to the position of the welding mechanism 5, then the welding mechanism 5 can be started to make the laser welding head 56 weld the assembled bottom plate 13 and U-shaped steel 12, so that the bottom plate 13 and the U-shaped steel 12 are welded together, after welding is completed, the stepper motor 71 is started again to rotate the welded bottom plate 13 and U-shaped steel 12 to the initial assembly position, and then the welded bottom plate 13 and U-shaped steel 12 can be taken down.

[0036] As Figure 3 , Figure 5 and Figure 6As shown, the conversion mechanism 7 is fixedly connected with a positioning mechanism 9 for positioning the U-shaped steel 12, the positioning mechanism 9 comprises a support frame 91 fixedly connected to the top of the rotating disc 72, a telescopic rod 92 is fixedly connected in the support frame 91, a positioning spring 95 is sleeved on the telescopic rod 92, the end of the telescopic rod 92 is fixedly connected with a connecting frame 93, the two ends of the positioning spring 95 are fixedly connected with the support frame 91 and the connecting frame 93 respectively, a positioning frame 94 is fixedly connected to one side of the connecting frame 93, a position adjusting assembly is fixedly connected to the connecting frame 93, the position adjusting assembly comprises a servo motor 96 fixedly connected to the top of the connecting frame 93, the output end of the servo motor 96 is fixedly connected with a threaded rod 97, the threaded rod 97 penetrates through the connecting frame 93 and is rotationally connected with the connecting frame 93, a sliding plate 98 is threadedly connected to the threaded rod 97, the sliding plate 98 is slidingly connected with the connecting frame 93, two connecting columns 99 are fixedly connected to one side of the sliding plate 98, positioning ears 910 are fixedly connected to the ends of the connecting columns 99, connecting grooves are formed in the U-shaped steel 12 and matched with the positioning ears 910, and a sliding groove 911 is formed in the positioning frame 94 and matched with the connecting columns 99.

[0037] After the worker places the bottom plate 13 in the storage groove 73, the U-shaped steel 12 is installed in the positioning frame 94, during the installation, first, the U-shaped steel 12 is aligned with the positioning frame 94 and the connecting grooves of the U-shaped steel 12 are aligned with the positioning ears 910, then the U-shaped steel 12 is installed in the positioning frame 94 through the positioning ears 910, at this time, the servo motor 96 is started to make the positioning ears 910 abut against the inner surface of the U-shaped steel 12, and the U-shaped steel 12 is limited, at this time, the bottom end of the U-shaped steel 12 is spaced apart from the upper surface of the bottom plate 13 and is located at the center position of the bottom plate 13, then the stepping motor 71 is started to drive the rotating disc 72 to rotate, and the assembled U-shaped steel 12 and bottom plate 13 are conveyed to the direction where the welding mechanism 5 is located, until the U-shaped steel 12 and the bottom plate 13 reach the position where the welding mechanism 5 is located, the positioning of the U-shaped steel 12 and the bottom plate 13 is realized, and it is ensured that the U-shaped steel 12 is located at the center position of the bottom plate 13, so that the U-shaped steel 12 and the bottom plate 13 after welding can provide stable support for the photovoltaic support, and the collapse of the photovoltaic support due to the fact that the U-shaped steel 12 is not located at the center position of the bottom plate 13 and the uneven bearing capacity of the bottom plate 13 is avoided.

[0038] In addition, it should be noted that the positioning spring 95 is in a stretched state under normal circumstances, so as to ensure that the connecting frame 93 abuts against the support frame 91, thereby ensuring that the U-shaped steel 12 can be located at the center position of the bottom plate 13.

[0039] As Figure 1 , Figure 2 and Figure 4As shown, the top of the electrical box 1 is fixedly connected with a polishing mechanism 6, the polishing mechanism 6 is used for polishing the contact surface of the bottom plate 13 and the U-shaped steel 12, the polishing mechanism 6 includes a fixed ring 61 fixedly connected at the top of the electrical box 1, the top of the fixed ring 61 is fixedly connected with a polishing plate 62 through bolts, the polishing plate 62 is located at the top of the rotating disc 72, and the end of the polishing plate 62 is inclined.

[0040] In the process of conveying the assembled U-shaped steel 12 and the bottom plate 13 to the position where the welding mechanism 5 is located, the U-shaped steel 12 is lifted upward through the positioning lug 910, so that there is a gap between the bottom end of the U-shaped steel 12 and the upper surface of the bottom plate 13, at this time, the polishing plate 62 with the inclined end will be inserted into the gap and gradually contact the bottom end of the U-shaped steel 12, and the U-shaped steel 12 is pushed upward, so that the polishing plate 62 is located between the U-shaped steel 12 and the bottom plate 13, at this time, the U-shaped steel 12 does not separate from the positioning lug 910, and under the action of its own weight, the U-shaped steel 12 is attached to the polishing surface of the polishing plate 62, and then the continuous rotation of the rotating disc 72 will make the upper and lower polishing surfaces of the polishing plate 62 polish the lower end of the U-shaped steel 12 and the upper surface of the bottom plate 13 respectively, remove the burrs on the lower end of the U-shaped steel 12 due to cutting, shearing and other processing operations, and remove the impurities on the upper surface of the bottom plate 13, polish the lower end of the U-shaped steel 12 and the upper surface of the bottom plate 13 flat, and ensure the flatness of the contact part of the U-shaped steel 12 and the bottom plate 13, so that the U-shaped steel 12 can be welded vertically on the bottom plate 13, and the U-shaped steel 12 and the bottom plate 13 after welding can meet the welding requirements, and the welding quality of the U-shaped steel 12 and the bottom plate 13 is improved.

[0041] As shown in the figure, Figure 3 As shown, the conversion mechanism 7 is fixedly connected with a blowing mechanism 8, the blowing mechanism 8 is used for blowing the debris generated during polishing, the blowing mechanism 8 includes a gas pump 81 fixedly connected at the top of the rotating disc 72, the suction end of the gas pump 81 is fixedly connected with a suction pipe 82, the exhaust end of the gas pump 81 is fixedly connected with an exhaust pipe 83, the exhaust pipe 83 is fixedly connected in the rotating disc 72, and the outer surface of the rotating disc 72 is provided with a blowing groove 104 in communication with the inside of the exhaust pipe 83.

[0042] The rotating disc 72 rotates to convey the assembled U-shaped steel 12 and the bottom plate 13, and when the U-shaped steel 12 and the bottom plate 13 pass through the polishing plate 62, the gas pump 81 is started to make the gas pump 81 draw external air through the suction pipe 82, and inject the external air into the exhaust pipe 83, so that the air blows to the polishing part of the U-shaped steel 12 and the bottom plate 13 through the blowing groove 104, removes the debris generated during polishing, avoids the debris generated during polishing remaining on the bottom plate 13, and affects the perpendicularity of the U-shaped steel 12 on the bottom plate 13, so as to ensure the perpendicularity of the U-shaped steel 12 welded on the bottom plate 13, and ensure the welding quality;

[0043] In addition, after the welding is completed, the air pump 81 is started, air is blown to the welding position of the U-shaped steel 12 and the bottom plate 13 through the air blowing groove 104, and the welding position of the U-shaped steel 12 and the bottom plate 13 is cooled.

[0044] As shown in Figure 3 and Figure 5 The positioning mechanism 9 is fixedly connected with a test mechanism 10 for testing the welding strength of the U-shaped steel 12 and the bottom plate 13. The test mechanism 10 comprises a push rod cylinder 101 fixedly connected to the outer surface of the support frame 91. The output end of the push rod cylinder 101 is fixedly connected with a test frame 102. The bottom of the test frame 102 is fixedly connected with a limiting plate 103 which is slidingly connected with the air blowing groove 104. The top of the electrical box 1 is fixedly connected with an industrial camera 11. The industrial camera 11 is used to take pictures of the welding position of the U-shaped steel 12 and the bottom plate 13 when the test mechanism 10 tests the welding strength of the U-shaped steel 12 and the bottom plate 13. In addition, the right side of the top of the electrical box 1 is provided with an NG conveying belt (the NG conveying belt is prior art and is not shown in the figure, and will not be described in detail).

[0045] After the U-shaped steel 12 and the bottom plate 13 are welded, the stepper motor 71 is started to rotate the turntable 72, so as to convey the welded U-shaped steel 12 and the bottom plate 13 to the position where the industrial camera 11 is located. At this time, the push rod cylinder 101 located at the position of the industrial camera 11 is started to move the test frame 102 to the direction where the positioning frame 94 is located. During the movement of the test frame 102, the limiting plate 103 will move to the upper surface of the bottom plate 13. Before the test frame 102 contacts the positioning frame 94, the limiting plate 103 has already fallen on the bottom plate 13 to limit the bottom plate 13. At this time, the limiting plate 103 will not contact the U-shaped steel 12. Then, the push rod cylinder 101 applies a constant test pushing force, so that the test frame 102 pushes the U-shaped steel 12 through the positioning frame 94. During the pushing process of the U-shaped steel 12, the industrial camera 11 takes pictures of the weld between the U-shaped steel 12 and the bottom plate 13, and sends the pictures to the controller 2 to analyze whether the weld is firm. After the test is completed, the push rod cylinder 101 works to make the test frame 102 separate from the positioning frame 94. Then, the stepper motor 71 is started to rotate the turntable 72 clockwise by 90 degrees. When the controller 2 analyzes that the weld does not meet the welding requirements, the electric cylinder 75 is started at this time to make the push plate 76 push the bottom plate 13 to move upward, so as to make the U-shaped steel 12 move upward, so that the connecting groove provided in the U-shaped steel 12 is aligned with the positioning lug 910, and the positioning lug 910 is easily separated. At this time, the push rod cylinder 101 is started again to make the test frame 102 push the positioning frame 94 to move outward, so as to push the U-shaped steel 12 and the bottom plate 13 which do not meet the welding requirements to the NG conveying belt.

[0046] The U-shaped steel 12 and the bottom plate 13 meeting the welding requirements will be conveyed to the initial assembling position by the stepping motor 71 through the rotating disc 72, and the worker will take down the U-shaped steel 12 and the bottom plate 13 meeting the welding requirements and reassemble the new U-shaped steel 12 and the bottom plate 13.

[0047] The specific working principle of the present application is as follows:

[0048] In use, after the worker places the bottom plate 13 in the storage groove 73, at this time the bottom plate 13 slightly extends out of the storage groove 73, the U-shaped steel 12 is installed in the positioning frame 94, and when installing, first align the U-shaped steel 12 with the positioning frame 94 and make the connecting groove of the U-shaped steel 12 align with the positioning lug 910, then the U-shaped steel 12 can be installed in the positioning frame 94 through the positioning lug 910, at this time the servo motor 96 can be started to make the positioning lug 910 fit with the inner surface of the U-shaped steel 12, and the U-shaped steel 12 is limited, at this time the bottom end of the U-shaped steel 12 and the upper surface of the bottom plate 13 exist a certain gap and are in the center position of the bottom plate 13, and then the stepping motor 71 can be started to make the rotating disc 72 rotate, and the assembled U-shaped steel 12 and bottom plate 13 are conveyed to the direction where the welding mechanism 5 is located, until the U-shaped steel 12 and the bottom plate 13 reach the position where the welding mechanism 5 is located, the positioning of the U-shaped steel 12 and the bottom plate 13 is realized, and the U-shaped steel 12 is ensured to be in the center position of the bottom plate 13, so as to ensure that the U-shaped steel 12 and the bottom plate 13 after welding can provide stable support for the photovoltaic support, and avoid that the U-shaped steel 12 does not locate in the center position of the bottom plate 13, which leads to that the bearing capacity of the bottom plate 13 is not uniform, and leads to that the photovoltaic support collapses;

[0049] In addition, it needs to be explained that the positioning spring 95 is in the stretched state under normal circumstances, so as to ensure that the connecting frame 93 and the supporting frame 91 fit, so as to ensure that the U-shaped steel 12 can be in the center position of the bottom plate 13;

[0050] After assembly, the stepper motor 71 can be started to rotate the assembled bottom plate 13 and U-shaped steel 12 to the position of the welding mechanism 5. During the rotation of the turntable 72 to transport the assembled U-shaped steel 12 and bottom plate 13 to the position of the welding mechanism 5, the positioning lug 910 is lifted upward to make the bottom end of the U-shaped steel 12 have a gap with the upper surface of the bottom plate 13. At this time, the polishing plate 62 with an inclined end will be inserted into the gap and gradually contact the lower end of the U-shaped steel 12, and push the U-shaped steel 12 upward to make the polishing plate 62 between the U-shaped steel 12 and the bottom plate 13. At this time, the U-shaped steel 12 will be polished on the polishing surface of the polishing plate 62 under its own weight, and the continued rotation of the turntable 72 will polish the lower end of the U-shaped steel 12 and the upper surface of the bottom plate 13 with the upper and lower polishing surfaces of the polishing plate 62, respectively, to remove burrs on the lower end of the U-shaped steel 12 due to cutting, shearing and other processing operations, and remove impurities on the upper surface of the bottom plate 13, polish the lower end of the U-shaped steel 12 and the upper surface of the bottom plate 13 flat, and ensure the flatness of the contact part of the U-shaped steel 12 and the bottom plate 13, so that the U-shaped steel 12 can be vertically welded on the bottom plate 13, and the U-shaped steel 12 and the bottom plate 13 after welding can meet the welding requirements, and the welding quality of the U-shaped steel 12 and the bottom plate 13 is improved;

[0051] When the U-shaped steel 12 and the bottom plate 13 pass through the polishing plate 62, the servo motor 96 is started to rotate the threaded rod 97, and then the sliding plate 98 moves downward to drive the positioning lug 910 to move downward through the connecting column 99. However, the positioning lug 910 is not in the position directly opposite the connecting groove, so that the positioning lug 910 cannot be separated from the connecting groove, and the positioning lug 910 can still limit the U-shaped steel 12, so that after the U-shaped steel 12 and the bottom plate 13 pass through the polishing plate 62, the U-shaped steel 12 can directly fall on the upper surface of the bottom plate 13 and adhere to the bottom plate 13 under the action of gravity, improving the welding efficiency. At the same time, the air pump 81 is started to draw external air through the suction pipe 82 and inject the external air into the exhaust pipe 83, so that the air blows to the polishing part of the U-shaped steel 12 and the bottom plate 13 through the air blowing groove 104 to remove the debris generated during polishing, avoid the debris generated during polishing remaining on the bottom plate 13, and affect the perpendicularity of the U-shaped steel 12 on the bottom plate 13, so as to ensure the perpendicularity of the U-shaped steel 12 welded on the bottom plate 13 and ensure the welding quality;

[0052] The assembled bottom plate 13 and the U-shaped steel 12 are rotated to the position of the welding mechanism 5, and the positioning lug 910 can still limit the U-shaped steel 12. When the bottom plate 13 and the U-shaped steel 12 are rotated to the position of the welding mechanism 5, the U-shaped steel 12 will fall on the upper surface of the bottom plate 13 under the action of its own gravity and be in close contact with the upper surface of the bottom plate 13. Then the welding mechanism 5 is started to weld the assembled bottom plate 13 and the U-shaped steel 12 by the laser welding head 56, so that the bottom plate 13 and the U-shaped steel 12 are welded together. After welding, the step motor 71 is started again to convey the welded bottom plate 13 and the U-shaped steel 12 to the position of the industrial camera 11.

[0053] After the welding is completed, the U-shaped steel 12 and the bottom plate 13 reach the position of the industrial camera 11. At this time, the push rod cylinder 101 located at the position of the industrial camera 11 is started to move the test frame 102 to the position of the positioning frame 94. During the movement of the test frame 102, the limiting plate 103 will move to the upper surface of the bottom plate 13. Before the test frame 102 contacts the positioning frame 94, the limiting plate 103 has already fallen on the bottom plate 13 to limit the bottom plate 13, and at this time the limiting plate 103 will not contact the U-shaped steel 12. Then the push rod cylinder 101 applies a constant test pushing force to make the test frame 102 push the U-shaped steel 12 through the positioning frame 94. During the pushing process of the U-shaped steel 12, the industrial camera 11 takes pictures of the weld between the U-shaped steel 12 and the bottom plate 13 and sends the pictures to the controller 2 for analysis of whether the weld is firm. After the test is completed, the push rod cylinder 101 works to make the test frame 102 separate from the positioning frame 94. Then the step motor 71 is started to rotate the rotating disc 72 clockwise by 90 degrees. When the controller 2 analyzes that the weld does not meet the welding requirements, the electric cylinder 75 is started at this time to make the push plate 76 push the bottom plate 13 to move upward, so that the U-shaped steel 12 moves upward, and the connecting groove opened in the U-shaped steel 12 is aligned with the positioning lug 910, so that the positioning lug 910 is separated. At this time, the push rod cylinder 101 is started again to make the test frame 102 push the positioning frame 94 to move outward, so that the U-shaped steel 12 and the bottom plate 13 that do not meet the welding requirements are pushed to the NG conveying belt.

[0054] The U-shaped steel 12 and the bottom plate 13 that meet the welding requirements are conveyed by the step motor 71 through the rotating disc 72 to the initial assembly position. The worker takes down the U-shaped steel 12 and the bottom plate 13 that meet the welding requirements, and reassembles new U-shaped steel 12 and bottom plate 13.

[0055] It should be noted that the electrical box 1 supplies power to the laser welding device. The step motor 71 rotates clockwise each time by 90 degrees. The electrical box 1, the electric sliding table 3, the motor, the laser welding head 56, the step motor 71, the electric cylinder 75, the air pump 81, the servo motor 96, the push rod cylinder 101 and the industrial camera 11 are electrically connected with the controller 2 and controlled by the controller 2.

[0056] The above embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner, but cannot be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application.

Claims

1. A laser welding device for photovoltaic support, comprising an electrical box (1), a controller (2), a motorized sliding table (3), a sliding block (4), a welding mechanism (5), a U-shaped steel (12) and a bottom plate (13), characterized in that, Also include: The conversion mechanism (7) is fixedly connected to the top of the electrical box (1), the bottom plate (13) is placed in the conversion mechanism (7), and the conversion mechanism (7) is used to rotate the conveying bottom plate (13), the conversion mechanism (7) includes a stepping motor (71) fixedly connected to the top of the electrical box (1), the output end of the stepping motor (71) is fixedly connected with a rotating disc (72) through a speed reducer, a storage groove (73) is formed in the rotating disc (72), the bottom of the rotating disc (72) is fixedly connected with a fixing frame (74), the fixing frame (74) is fixedly connected with an electric air cylinder (75), the output end of the electric air cylinder (75) is fixedly connected with a push plate (76), the push plate (76) is located in the storage groove (73), and the bottom plate (13) is placed in the storage groove (73); The polishing mechanism (6) is fixedly connected to the top of the electrical box (1), and the polishing mechanism (6) is used for polishing the contact surface of the bottom plate (13) and the U-shaped steel (12), the polishing mechanism (6) includes a fixed ring (61) fixedly connected to the top of the electrical box (1), the top of the fixed ring (61) is fixedly connected with a polishing plate (62) through bolts, the polishing plate (62) is located on the top of the rotating disc (72), and the end of the polishing plate (62) is inclined; The blowing mechanism (8) is fixedly connected to the conversion mechanism (7), and the blowing mechanism (8) is used for blowing the debris generated by polishing; The positioning mechanism (9) for positioning the U-shaped steel (12) is fixedly connected to the conversion mechanism (7), the positioning mechanism (9) includes a support frame (91) fixedly connected to the top of the rotating disc (72), a telescopic rod (92) is fixedly connected in the support frame (91), a positioning spring (95) is sleeved on the telescopic rod (92), an end of the telescopic rod (92) is fixedly connected with a connecting frame (93), the two ends of the positioning spring (95) are fixedly connected with the support frame (91) and the connecting frame (93) respectively, one side of the connecting frame (93) is fixedly connected with a positioning frame (94), the connecting frame (93) is fixedly connected with a position adjusting assembly, the positioning frame (94) is provided with a sliding groove (911), the position adjusting assembly includes a servo motor (96) fixedly connected to the top of the connecting frame (93), the output end of the servo motor (96) is fixedly connected with a threaded rod (97), the threaded rod (97) penetrates through the connecting frame (93) and is rotationally connected with the connecting frame (93), the threaded rod (97) penetrates through and is threadedly connected with a sliding plate (98), the sliding plate (98) is slidably connected with the connecting frame (93), one side of the sliding plate (98) is fixedly connected with a connecting column (99), the connecting column (99) penetrates through and is slidably connected with the sliding groove (911), and the end of the connecting column (99) is fixedly connected with a positioning lug (910); The test mechanism (10) for testing the welding strength of the U-shaped steel (12) and the bottom plate (13) is fixedly connected in the positioning mechanism (9).

2. A laser welding apparatus for a photovoltaic rack as defined in claim 1, wherein: The blowing mechanism (8) comprises a gas pump (81) fixedly connected to the top of the rotating disc (72), the suction end of the gas pump (81) is fixedly connected with a suction pipe (82), the exhaust end of the gas pump (81) is fixedly connected with an exhaust pipe (83), and the exhaust pipe (83) is fixedly connected in the rotating disc (72).

3. A laser welding apparatus for a photovoltaic rack as defined in claim 2, wherein: The test mechanism (10) comprises a push rod air cylinder (101) fixedly connected to the outer surface of the support frame (91), the output end of the push rod air cylinder (101) is fixedly connected with a test frame (102), the bottom of the test frame (102) is fixedly connected with a limiting plate (103), the outer surface of the rotating disc (72) is provided with a blowing groove (104), the limiting plate (103) is in sliding connection with the blowing groove (104), and the blowing groove (104) is in communication with the inside of the exhaust pipe (83).

4. A laser welding apparatus for a photovoltaic rack as defined in claim 1, wherein: The top of the electrical box (1) is fixedly connected with an industrial camera (11), which is used for shooting pictures of the welding position of the U-shaped steel (12) and the bottom plate (13) when the test mechanism (10) tests the welding strength of the U-shaped steel (12) and the bottom plate (13).

5. A laser welding apparatus for a photovoltaic rack as defined in claim 1, wherein: The welding mechanism (5) comprises a fixed seat (51) fixedly connected to the top of the sliding block (4), the top of the fixed seat (51) is rotatably connected with a first mechanical arm (52), one end of the first mechanical arm (52) is rotatably connected with a second mechanical arm (53), one end of the second mechanical arm (53) is rotatably connected with a third mechanical arm (54), one end of the third mechanical arm (54) is rotatably connected with a fourth mechanical arm (55), and one end of the fourth mechanical arm (55) is rotatably connected with a laser welding head (56).

6. A laser welding apparatus for a photovoltaic rack as defined in claim 1, wherein: The controller (2) is fixedly connected to the top of the electrical box (1), the electric sliding table (3) is fixedly connected to the top of the electrical box (1), and the sliding block (4) is in sliding connection with the outer surface of the electric sliding table (3).

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