A laser welding device for electrical equipment processing

Abstract

The present invention belongs to the technical field of laser welding, and specifically relates to a laser welding device for electrical equipment processing, including a bottom plate, on which a placement plate and a robotic arm are installed, and a laser welding head is installed on the robotic arm; a lifting column is installed on the placement plate, and a ball is installed on the lifting column; the lifting column includes an upper push rod and a lower push rod, the lower push rod is slidably installed at the lower end of the upper push rod, a buffer spring is installed between the upper push rod and the lower push rod, and the lower push rod is driven to lift by a motor; an elastic layer is installed on the upper push rod, a ventilation hole is opened in the upper push rod, the ventilation hole is communicated with an expansion cavity, and a communication hole is opened in the lower push rod; the structure of the present invention is simple, which is convenient for fully fixing cabinets of different specifications, ensuring the position stability of the cabinets during the welding process, avoiding affecting the welding quality, and cleaning the welding fumes generated during the welding process to reduce pollution.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser welding, and specifically relates to a laser welding device for electrical equipment processing. Background Art

[0002] Laser welding uses high-energy laser pulses to locally heat the material in a small area, melting the material into a specific molten pool without the need for soldering materials. It welds thin-walled materials and precision parts through spot welding, butt welding, lap welding, seal welding, etc. During the laser welding process of the electrical equipment cabinet shell, it is necessary to clamp and position the electrical equipment cabinet shell.

[0003] At the same time, when laser welding the electrical equipment cabinet shell, the fixing effect of the electrical equipment cabinet is not good, and the situation of the electrical equipment cabinet shell shifting easily occurs, affecting the accuracy of laser welding and resulting in a decrease in product quality. Moreover, after the electrical equipment cabinet is welded, the operation of disassembling the electrical equipment cabinet from the clamping and positioning mechanism is cumbersome, which brings inconvenience to the staff. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art, facilitate the full fixation of cabinets of different specifications, ensure the stable position during the cabinet welding process, avoid affecting the welding quality, and clean the welding fumes generated during the welding process to reduce pollution, the present invention proposes a laser welding device for electrical equipment processing.

[0005] The technical solution adopted by the present invention to solve its technical problems is: The present invention relates to a laser welding device for electrical equipment processing, including a bottom plate, the bottom plate is installed on a frame, a placement plate and a robotic arm are installed on the bottom plate, a laser welding head is installed on the robotic arm, conveyor belts for loading and unloading are arranged on both sides of the welding device, and guide rollers are installed at both ends of the placement plate along the X-axis direction;

[0006] Installation holes are opened on the placement plate, lifting columns are slidably installed in the installation holes, an installation block is installed at the upper end of the lifting column, and balls are installed on the installation block;

[0007] The lifting column includes an upper top rod and a lower top rod, the installation block is located at the upper end of the upper top rod, a sliding groove is opened in the upper top rod, the upper end of the lower top rod is installed in the sliding groove, a buffer spring is installed between the upper end of the lower top rod and the top surface in the sliding groove, an installation frame is installed at the lower end of the lower top rod, a motor is installed below the bottom plate, the motor drives the installation frame to lift through a lead screw, a retaining ring is installed at the lower end of the upper top rod, a limiting frame is installed below the bottom plate, the limiting frame is located between the retaining ring and the installation frame, and the limiting frame supports the retaining ring;

[0008] An elastic layer is installed on the side surface of the upper ejector rod. An expansion cavity is formed in the elastic layer. A ventilation hole is formed in the upper ejector rod. The ventilation hole is communicated with the expansion cavity. A communication hole is formed in the lower ejector rod. The communication hole is communicated with the ventilation hole through a sliding groove. The communication hole is connected to an external air source.

[0009] The lifting column first rises upward, then the expansion cavity expands, and then it moves downward.

[0010] Preferably, a control cavity is formed in the upper ejector rod. A blocking ring is slidably installed in the control cavity. A blocking block is installed above the blocking ring. The blocking ring and the blocking block cooperate with each other to form a one-way valve structure that conducts unidirectionally from bottom to top.

[0011] The blocking block is installed in the control cavity through a movable frame. An extrusion frame is installed on the blocking ring. A pressure rod is installed on the extrusion frame. The pressure rod is located in the ventilation hole above the control cavity. The upper end of the pressure rod is connected to an installation block. A deformation layer is installed between the installation block and the upper ejector rod.

[0012] Preferably, multiple groups of elastic layers are arranged from top to bottom. Step protrusions are arranged on the surface of the elastic layer. The thickness of the side wall of the expansion cavity near the upper part is smaller than that of the lower part.

[0013] Preferably, the heights of the lifting columns at both sides of the placement plate along the Y-axis direction are higher than those of the lifting columns at other positions.

[0014] Preferably, a clamping groove is formed on the inner wall of the installation hole. The diameter of the clamping groove is larger than the diameter of the elastic layer in the initial state.

[0015] Preferably, an elastic membrane is installed at the opening of the ventilation hole at the upper end of the upper ejector rod. The upper surface of the elastic membrane is in contact with the lower surface of the installation block. The elastic membrane closes the opening of the ventilation hole. The upper end of the pressure rod abuts against the lower surface of the elastic membrane. The cross section of the elastic membrane is an upwardly convex arc.

[0016] Preferably, a concentration groove is formed on the surface of the placement plate. The concentration groove is located at the position between the installation holes. The bottom surface of the concentration groove near the negative X-axis direction end is higher than that of the other end.

[0017] A collection box is installed between the guide roller and the placement plate. A brush is installed in the collection box.

[0018] Preferably, a cleaning mechanism is installed on the laser welding head. The cleaning mechanism includes a connecting ring, an air pipe and a contact pipe. The air pipe is communicated with the contact pipe through the connecting ring. The air pipe is connected to an external air source.

[0019] The connecting ring includes an intake ring and an exhaust ring. An inlet pipe and a blowing pipe are connected to the intake ring, and a discharge pipe and a suction pipe are connected to the exhaust ring.

[0020] The blowing pipe and the suction pipe are symmetrically distributed around the laser welding head. There are multiple groups of the blowing pipes and the suction pipes evenly distributed around the laser welding head. The blowing pipes and the suction pipes are made of elastic hoses.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. For the laser welding device for electrical equipment processing according to the present invention, by providing a placement plate, lifting columns, balls, and an elastic layer, it is convenient for the cabinet to be moved onto the placement plate and adjusted in position on the placement plate. Then, through the lifting columns and the expanded elastic layer, the cabinet is fully fixed and it is convenient to remove the cabinet from the welding device after welding is completed, avoiding the movement of the cabinet and affecting the welding quality.

[0023] 2. For the laser welding device for electrical equipment processing according to the present invention, by providing a control cavity, a pressure rod, a clamping groove, a blocking block, and a blocking ring, the elastic layer on the lifting column below the cabinet expands and is stuck in the clamping groove, preventing the lifting column below the cabinet from rising and having an adverse effect on the fixation of the cabinet, thus ensuring that the cabinet is fully fixed.

[0024] 3. For the laser welding device for electrical equipment processing according to the present invention, by providing a suction pipe and a blowing pipe, it is convenient to form a directional air flow, thereby collecting the welding fumes generated during the welding process. Moreover, the elastic suction pipe and blowing pipe can deform adaptively and will not interfere with the movement and rotation of the laser welding head, avoiding affecting the normal use of the welding device. Description of the Drawings

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 is a perspective view of the welding device of the present invention;

[0027] Figure 2 is a cross-sectional view of the welding device of the present invention from the first perspective;

[0028] Figure 3 is a cross-sectional view of the welding device of the present invention from the second perspective;

[0029] Figure 4 is a cross-sectional view of the lifting column in the welding device of the present invention;

[0030] Figure 5 is a perspective view of the robotic arm and the laser welding head in the welding device of the present invention;

[0031] Figure 6It is a schematic diagram of the installation positions of the welding device of the present invention and the conveyor belts at both ends thereof;

[0032] Figure 7 It is Figure 1 The partial enlarged view at position A in;

[0033] Figure 8 It is Figure 2 The partial enlarged view at position B in;

[0034] Figure 9 It is Figure 2 The partial enlarged view at position C in;

[0035] Figure 10 It is Figure 3 The partial enlarged view at position D in;

[0036] Figure 11 It is Figure 4 The partial enlarged view at position E in;

[0037] Figure 12 It is Figure 4 The partial enlarged view at position F in;

[0038] Figure 13 It is Figure 4 The partial enlarged view at position G in;

[0039] Figure 14 It is Figure 5 The partial enlarged view at position H in;

[0040] In the figure: base plate 1, frame 11, guide roller 12, collection box 13, brush bristles 131, mounting bracket 14, motor 141, limiting bracket 15, placing plate 2, central groove 21, clamping groove 22, lifting column 3, lower ejector rod 31, communication hole 311, buffer spring 312, upper ejector rod 32, ventilation hole 321, sliding groove 322, retaining ring 323, elastic membrane 324, control cavity 325, mounting block 33, deformation layer 331, ball 34, elastic layer 35, expansion cavity 351, stepped protrusion 352, pressing rod 36, extrusion bracket 361, blocking ring 362, blocking block 363, movable bracket 364, robotic arm 4, laser welding head 41, connecting ring 42, air inlet ring 421, air outlet ring 422, air pipe 43, inlet pipe 431, discharge pipe 432, contact pipe 44, air blowing pipe 441, air suction pipe 442. Specific embodiments

[0041] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0042] Such as Figures 1 to 14As shown in the figure, a laser welding device for electrical equipment processing according to the present invention includes a bottom plate 1, the bottom plate 1 is installed on a frame 11, a placement plate 2 and a robotic arm 4 are installed on the bottom plate 1, a laser welding head 41 is installed on the robotic arm 4, and conveyors for loading and unloading are arranged on both sides of the welding device. Guide rollers 12 are installed at both ends of the placement plate 2 in the X-axis direction;

[0043] Installation holes are formed in the placement plate 2, a lifting column 3 is slidably installed in the installation holes, an installation block 33 is installed at the upper end of the lifting column 3, and balls 34 are installed on the installation block 33;

[0044] The lifting column 3 includes an upper push rod 32 and a lower push rod 31. The installation block 33 is located at the upper end of the upper push rod 32. A chute 322 is formed in the upper push rod 32. The upper end of the lower push rod 31 is installed in the chute 322. A buffer spring 312 is installed between the upper end of the lower push rod 31 and the top surface in the chute 322. An installation frame 14 is installed at the lower end of the lower push rod 31. A motor 141 is installed below the bottom plate 1. The motor 141 drives the installation frame 14 to lift through a lead screw. A retaining ring 323 is installed at the lower end of the upper push rod 32. An air extraction pipe 15 is installed below the bottom plate 1. The air extraction pipe 15 is located between the retaining ring 323 and the installation frame 14, and the air extraction pipe 15 supports the retaining ring 323;

[0045] An elastic layer 35 is installed on the side surface of the upper push rod 32. An expansion cavity 351 is formed in the elastic layer 35. An air vent hole 321 is formed in the upper push rod 32. The air vent hole 321 communicates with the expansion cavity 351. A communication hole 311 is formed in the lower push rod 31. The communication hole 311 communicates with the air vent hole 321 through the chute 322. The communication hole 311 is connected to an external air source;

[0046] The lifting column 3 first rises upward, then the expansion cavity 351 expands, and then moves downward;

[0047] During operation, the staff moves the assembled and to-be-welded cabinet upward onto the placement plate 2 through the conveyor belt and guide rollers 12 near the positive X-axis end of the placement plate 2. After that, after the staff adjusts the cabinet to a suitable position on the placement plate 2, the staff controls the motor 141 to act through a controller, driving the lifting column 3 to rise upward, so that the lifting columns 3 are arranged around the cabinet to be welded, and the position of the cabinet is restricted and fixed by the lifting columns 3. Then, the staff controls the robotic arm 4 to drive the laser welding head 41 to weld the gaps on the cabinet through the controller, ensuring good welding quality of the cabinet. At the same time, after the cabinet is welded, the cabinet leaves the welding device from the conveyor belt at the other end of the placement plate 2;

[0048] When the motor 141 is started, the lower push rod 31 is driven to rise through the mounting plate, the lower push rod 31 is slidably mounted in the slide groove 322 in the upper push rod 32, and a buffer spring 312 is installed in the slide groove 322, so that the lifting column 3 on the placement plate 2 below the cabinet to be welded is blocked, that is, the buffer spring 312 in this part of the lifting column 3 is compressed, and this part of the lifting column 3 will not be pushed up, causing displacement or skew of the cabinet to be welded, thereby avoiding affecting the restriction and fixation of the cabinet, and affecting the efficiency and quality of subsequent welding of the cabinet;

[0049] At the same time, the lifting columns 3 distributed around the cabinet to be welded can fully limit and fix the cabinet, ensuring that the cabinet is well fixed during the welding process, avoiding displacement or shaking of the cabinet during the welding process, affecting the smooth progress of welding and the quality of cabinet welding. At the same time, after the cabinet is welded, it is relatively convenient to release the limit and fixation of the cabinet, and the operation is simple, thereby improving the work efficiency of the staff;

[0050] At the same time, since the lifting columns 3 are evenly distributed on the placement plate 2, and the laser welding head 41 is located on the mechanical arm 4, there is a large adjustment space for the placement position of the cabinet to be welded on the placement plate 2, which is convenient for the placement, limiting and fixing of the cabinet, and improves the use range of the welding device;

[0051] At the same time, after all the lifting columns 3 around the cabinet to be welded on the placement plate 2 are raised, the controller controls the external gas source to inflate the expansion cavity 351, so that the expansion cavity 351 expands, that is, the elastic layer 35 on the lifting columns 3 around the cabinet expands and abuts against the side of the cabinet, further fully fixing the cabinet, improving the effect of limiting and fixing the cabinet, and ensuring that the cabinet welding is carried out smoothly and the cabinet welding effect is good;

[0052] Meanwhile, after the elastic layer 35 expands and abuts against the side of the cabinet, the controller controls the motor 141 to reverse, driving the already raised lifting column 3 to move downward or having a tendency to move downward. Thus, by means of the frictional force between the elastic layer 35 and the side of the cabinet, a downward acting force is generated on the cabinet, preventing a gap from existing between the bottom surface of the cabinet and the surface of the placement plate 2 and affecting the fixing effect of the cabinet. Among them, when the motor 141 reverses, the mounting bracket 14 drives the lower ejector rod 31 to move downward. At this time, the elastic force of the buffer spring 312 in the lifting column 3 that is not raised and is located below the cabinet is released, reducing the upward jacking force of the lifting column 3 below the cabinet on the cabinet, preventing the cabinet from being affected by this part of the lifting column 3 during the welding process and generating displacement in the Z-axis direction, which affects the welding quality of the cabinet and the safety of the welding device. At the same time, among the lifting columns 3 that are already raised and are located around the cabinet, the buffer spring 312 will be stretched downward, causing the lifting column 3 that abuts against the side of the cabinet around the cabinet to generate a downward acting force on the cabinet, further ensuring the limiting and fixing effects of the cabinet during the welding process.

[0053] Meanwhile, when the cabinet to be welded moves on the placement plate 2, the bottom surface of the cabinet comes into contact with the ball 34, facilitating the movement and position adjustment of the cabinet. Moreover, the conveyor belts and guide rollers 12 provided at both ends in the X-axis direction of the welding device can facilitate the staff to move the cabinet to be welded onto the welding device, thereby improving the operation efficiency of the staff and reducing the labor intensity of the staff.

[0054] As an implementation manner of the present invention, a control cavity 325 is formed inside the upper ejector rod 32. A blocking ring 362 is slidably installed inside the control cavity 325. A blocking block 363 is installed above the blocking ring 362. The blocking ring 362 and the blocking block 363 cooperate with each other to form a one-way valve structure that conducts unidirectionally from bottom to top.

[0055] The blocking block 363 is installed inside the control cavity 325 through a movable frame 364. An extrusion frame 361 is installed on the blocking ring 362. A pressure rod 36 is installed on the extrusion frame 361. The pressure rod 36 is located in the vent hole 321 above the control cavity 325. The upper end of the pressure rod 36 is connected to the mounting block 33. A deformation layer 331 is installed between the mounting block 33 and the upper ejector rod 32.

[0056] When the cabinet to be welded is moved onto the placement plate 2, the lifting columns 3 located below the cabinet to be welded will be squeezed by the cabinet. During this process, the deformation layer 331 between the mounting block 33 and the upper push rod 32 will be squeezed and deformed, causing the pressure rod 36 to be squeezed downward, driving the plug ring 362 in the control cavity 325 to move downward, thereby creating a gap between the plug ring 362 and the plug block 363 and releasing the one-way conductivity of the one-way valve structure formed between the plug ring 362 and the plug block 363. Similarly, the lifting columns 3 that are not yet raised and are located around the cabinet are not squeezed by the cabinet, and the one-way valve structure formed between the plug ring 362 and the plug block 363 still has one-way conductivity. Therefore, when the controller controls the external air source to inflate the expansion cavity 351, the gas will first enter the expansion cavity 351 in the lifting column 3 below the cabinet, causing the elastic layer 35 on the lifting column 3 below the cabinet to expand, making this part of the lifting column 3 stuck in the mounting hole, avoiding or reducing the possibility of the lifting column 3 below the cabinet being jacked up, and reducing the impact of the lifting of the lifting column 3 below the cabinet on the fixing effect of the cabinet;

[0057] At the same time, after the external air source starts to supply gas, the motor 141 starts to operate. Before the pressure of the external air source is less than the opening pressure of the one-way valve structure in the lifting column 3 around the cabinet, the lifting column 3 around the cabinet has already been driven up by the motor 141, thus completing the limiting and fixing of the cabinet;

[0058] At the same time, when the external air source supplies gas, the pressure of the gas will push the plug block 363 upward, creating a gap between the plug block 363 and the plug ring 362 to facilitate the gas to enter the expansion cavity 351. Since the elastic force generated by the deformation layer 331 is less than the elastic force of the spring used to control the movement of the plug block 363 in the control cavity 325 and the air pressure in the control cavity 325, therefore, during the welding of the cabinet, the external air source will continuously supply air pressure to ensure that the expansion cavity 351 remains expanded and fixes the cabinet. At the same time, after the welding of the cabinet is completed and the external air source stops supplying air pressure, the gas pressure in the expansion cavity 351 will be greater than the elastic force provided by the deformation layer 331, causing the plug ring 362 to move downward and creating a gap between the plug ring 362 and the plug block 363, so that the expansion cavity 351 no longer expands and the elastic layer 35 returns to its original state, thereby releasing the fixation of the cabinet.

[0059] As an embodiment of the present invention, multiple groups of the elastic layer 35 are arranged from top to bottom. Step protrusions 352 are provided on the surface of the elastic layer 35, and the thickness of the side wall of the expansion cavity 351 near the upper part is less than that of the side wall near the lower part;

[0060] By providing stepped protrusions 352 on the surface of the elastic layer 35, after the elastic layer 35 expands and contacts the side of the cabinet, the acting force between the elastic layer 35 and the side of the cabinet is relatively large, preventing sliding between the cabinet and the elastic layer 35, ensuring a good fixing effect on the cabinet, and thus avoiding displacement of the cabinet from affecting the welding quality of the cabinet;

[0061] Meanwhile, since the side wall thickness of the expansion cavity 351 at the upper part is relatively thin, the deformation amount of the elastic layer 35 near the upper part after expansion is relatively large, causing the elastic layer 35 to exert a downward acting force on the side of the cabinet after expansion, thereby further increasing the restraint and fixing effect on the cabinet and ensuring good welding quality of the cabinet. At the same time, since the side wall thickness of the lower part of the expansion cavity 351 is relatively large, it can also prevent the side wall of the expansion cavity 351 from being affected by burrs and protrusions when contacting the side of the cabinet, resulting in damage to the elastic layer 35 and affecting the normal use of the welding device.

[0062] As an embodiment of the present invention, the heights of the lifting columns 3 at both sides of the placing plate 2 along the Y-axis direction are higher than those of the lifting columns 3 at other positions;

[0063] Since the heights of the lifting columns 3 at both sides of the placing plate 2 along the Y-axis direction are relatively high, when the staff adjusts and moves the position of the cabinet on the placing plate 2, the cabinet will be affected by the higher lifting columns 3 at both sides in the Y-axis direction, increasing the resistance of the cabinet to move in the Y-axis direction, guiding and restricting the movement of the cabinet, that is, avoiding or reducing the possibility that the cabinet slides out of the placing plate 2 or drops during the movement on the placing plate 2, ensuring the normal progress of welding and good welding quality of the cabinet.

[0064] As an embodiment of the present invention, a clamping groove 22 is provided on the inner wall of the mounting hole, and the diameter of the clamping groove 22 is larger than the diameter of the elastic layer 35 in the initial state;

[0065] By providing the clamping groove 22 in the mounting hole, when the elastic layer 35 on the lifting column 3 below the cabinet starts to expand, the elastic layer 35 will be embedded in the clamping groove 22, improving the clamping and limiting effect on the lifting column 3 below the cabinet. When the lifting column 3 below the cabinet is only clamped and limited by the friction force between the elastic layer 35 and the inner wall of the mounting hole, there may be a problem that the lifting column 3 is not firmly clamped, resulting in a tendency for the lifting column 3 to rise completely or partially, affecting the fixing effect on the cabinet.

[0066] As an embodiment of the present invention, an elastic membrane 324 is installed at the opening of the ventilation hole 321 at the upper end of the upper ejector rod 32. The upper surface of the elastic membrane 324 is in contact with the lower surface of the mounting block 33. The elastic membrane 324 closes the opening of the ventilation hole 321. The upper end of the pressure rod 36 abuts against the lower surface of the elastic membrane 324, and the cross-section of the elastic membrane 324 is an upwardly arched shape;

[0067] By installing the elastic membrane 324 at the opening of the ventilation hole 321, the ventilation hole 321 is relatively closed to the outside, avoiding the situation that there is a gap between the pressure rod 36 and the ventilation hole 321 when the mounting block 33 squeezes the pressing block, resulting in gas leakage in the ventilation hole 321, thereby ensuring the stability of the pressure in the ventilation hole 321 and the expansion cavity 351, that is, ensuring the stability of the cabinet limiting and fixing effects.

[0068] As an embodiment of the present invention, a concentration groove 21 is provided on the surface of the placement plate 2. The concentration groove 21 is located at the position between the mounting holes, and the bottom surface of the concentration groove 21 near the negative X-axis end is higher than the bottom surface of the other end;

[0069] A collection box 13 is installed between the guide roller 12 and the placement plate 2, and a brush hair 131 is installed in the collection box 13;

[0070] Since the components forming the cabinet need to be cut and processed from raw materials and the components need to be assembled and moved to the welding device, there will be dust and impurities on the surface of the cabinet to be welded. Therefore, a collection box 13 is installed between the guide roller 12 and the placement plate 2, and a brush hair 131 is installed on the collection box 13. When the cabinet to be welded changes its movement direction through the guide roller 12 and is transferred to the placement plate 2, the bottom surface of the cabinet will pass above the collection box 13, and the brush hair 131 will clean the bottom surface of the cabinet, thereby cleaning the dust and impurities attached to the bottom surface of the cabinet, avoiding the dust and impurities on the bottom surface of the cabinet from contaminating the surface of the placement plate 2 and affecting the lifting of the lifting column 3 and the rotation of the ball 34;

[0071] At the same time, during the laser welding process, some particulate matter and welding fumes will also be generated. When this part of the particulate matter and welding fumes are not fully collected, the remaining part of the particulate matter and welding fumes will settle on the surface of the placement plate 2 and in the concentration groove 21. At this time, the surface of the placement plate 2 is cleaned to make the settled particulate matter or welding fumes enter the concentration groove 21 and then be collected in the collection box 13, thereby facilitating the cleaning of the surface of the placement plate 2.

[0072] As an embodiment of the present invention, a cleaning mechanism is installed on the laser welding head 41. The cleaning mechanism includes a connecting ring 42, an air pipe 43, and a contact pipe 44. The air pipe 43 is communicated with the contact pipe 44 through the connecting ring 42, and the air pipe 43 is connected to an external air source;

[0073] The connecting ring 42 includes an intake ring 421 and an exhaust ring 422. An inlet pipe 431 and a blowing pipe 441 are connected to the intake ring 421, and a discharge pipe 432 and a suction pipe 442 are connected to the exhaust ring 422;

[0074] The blowing pipe 441 and the suction pipe 442 are symmetrically distributed around the laser welding head 41. The blowing pipe 441 and the suction pipe 442 are arranged in multiple groups with uniform distribution around the laser welding head 41. The blowing pipe 441 and the suction pipe 442 are made of elastic hoses;

[0075] When the laser welding head 41 welds the cabinet, the cleaning mechanism installed on the laser welding head 41 blows gas to the welding part through the blowing pipe 441 and sucks gas from the welding part through the suction pipe 442, so as to form a relatively stable and directional air flow on both sides of the welding part, so as to facilitate the removal and cleaning of the particulate matter and welding fume generated by welding, avoid the random dispersion of the particulate matter and welding fume generated by welding, pollute the environment and damage the health of the staff. At the same time, since the blowing pipe 441 and the suction pipe 442 are made of elastic hoses, when the robotic arm 4 drives the laser welding head 41 to move and rotate, there is no need to consider too much the interference of the cleaning mechanism on the displacement of the laser welding head 41, so that the laser welding head 41 can weld the positions on the cabinet located at the angle or in the gap between components. During this process, the blowing pipe 441 and the suction pipe 442 will automatically abut against the surface of the cabinet and deform adaptively, without interfering with the movement and rotation of the laser welding head 41 while ensuring the cleaning of particulate matter and welding fume.

[0076] The specific working process is as follows:

[0077] The staff moves the assembled cabinet to be welded upward onto the placement plate 2 through the conveyor belt and guide rollers 12 near the positive X-axis end of the placement plate 2. After that, after the staff adjusts the cabinet to the appropriate position on the placement plate 2, the controller controls the motor 141 to act, driving the lifting column 3 to rise, so that the lifting columns 3 surround the cabinet to be welded, restricting and fixing the position of the cabinet. Then, the controller controls the robotic arm 4 to drive the laser welding head 41 to weld the gap on the cabinet. After welding is completed, the cabinet leaves the welding device from the conveyor belt at the other end of the placement plate 2;

[0078] Among them, when the motor 141 starts, the lower ejector rod 31 is driven to rise through the mounting plate, the lower ejector rod 31 is slidably installed in the chute 322 of the upper ejector rod 32, and the buffer spring 312 is installed in the chute 322, so that the lifting column 3 below the cabinet to be welded is blocked, that is, the buffer spring 312 in this part of the lifting column 3 is compressed, and this part of the lifting column 3 will not jack up;

[0079] Meanwhile, since the lifting columns 3 are evenly distributed on the placement plate 2 and the laser welding head 41 is located on the robotic arm 4, there is a large adjustment space for the placement position of the cabinet to be welded on the placement plate 2;

[0080] Meanwhile, after all the lifting columns 3 around the cabinet to be welded on the placement plate 2 are raised, the controller controls the external air source to inflate the expansion cavity 351, causing the expansion cavity 351 to expand, that is, the elastic layer 35 on the lifting columns 3 around the cabinet expands and abuts against the side of the cabinet;

[0081] Meanwhile, after the elastic layer 35 expands and abuts against the side of the cabinet, the controller will control the motor 141 to reverse, driving the raised lifting columns 3 to move downward or having a tendency to move downward, thereby generating a downward acting force on the cabinet by means of the frictional force between the elastic layer 35 and the side of the cabinet; among them, when the motor 141 reverses, the mounting bracket 14 will drive the lower push rod 31 to move downward. At this time, the elastic force of the buffer spring 312 in the lifting column 3 that is not raised and is located below the cabinet is released, reducing the upward jacking force of the lifting column 3 below the cabinet on the cabinet. At the same time, among the lifting columns 3 that are raised and are located around the cabinet, the buffer spring 312 will be stretched downward, causing the lifting columns 3 that abut against the side of the cabinet around the cabinet to generate a downward acting force on the cabinet;

[0082] Meanwhile, when the cabinet to be welded moves on the placement plate 2, the bottom surface of the cabinet is in contact with the ball 34, facilitating the movement and position adjustment of the cabinet. Moreover, the conveyor belts and guide rollers 12 provided at both ends in the X-axis direction of the welding device can facilitate the staff to move the cabinet to be welded onto the welding device;

[0083] When the cabinet to be welded moves onto the placement plate 2, the lifting column 3 located below the cabinet to be welded will be squeezed by the cabinet. During this process, the deformation layer 331 between the mounting block 33 and the upper push rod 32 will be squeezed and deformed, causing the pressure rod 36 to be squeezed downward, driving the blocking ring 362 in the control cavity 325 to move downward, resulting in a gap between the blocking ring 362 and the blocking block 363 and releasing the one-way conductivity of the one-way valve structure formed between the blocking ring 362 and the blocking block 363. Similarly, for the lifting columns 3 that are not raised and are located around the cabinet, the one-way valve structure formed between the blocking ring 362 and the blocking block 363 still has one-way conductivity. Therefore, when the controller controls the external air source to inflate the expansion cavity 351, the gas will first enter the expansion cavity 351 in the lifting column 3 below the cabinet, causing the elastic layer 35 on the lifting column 3 below the cabinet to expand, making this part of the lifting column 3 stuck in the mounting hole;

[0084] Meanwhile, after the external air source starts supplying gas, the motor 141 begins to start. Before the pressure of the external air source is less than the opening pressure of the check valve structure in the lifting column 3 around the cabinet, the lifting column 3 around the cabinet has already been driven by the motor 141 to rise;

[0085] Meanwhile, when the external air source supplies gas, the pressure of the gas will push the plug 363 upward, creating a gap between the plug 363 and the plug ring 362 to facilitate the gas to enter the expansion chamber 351. At the same time, after the cabinet is welded, when the external air source stops supplying air pressure, the gas pressure in the expansion chamber 351 will be greater than the elastic force provided by the deformation layer 331, causing the plug ring 362 to move downward and creating a gap between the plug ring 362 and the plug 363, so that the expansion chamber 351 no longer expands and the elastic layer 35 returns to its original state;

[0086] By arranging stepped protrusions 352 on the surface of the elastic layer 35, after the elastic layer 35 expands and contacts the side of the cabinet, the acting force between the elastic layer 35 and the side of the cabinet is relatively large;

[0087] Meanwhile, since the side wall thickness of the expansion chamber 351 at the upper part is relatively thin, the deformation amount of the elastic layer 35 near the upper part after expansion will be relatively large, causing the elastic layer 35 to exert a downward acting force on the side of the cabinet after expansion. At the same time, since the side wall thickness of the lower part of the expansion chamber 351 is relatively large, it can also prevent the side wall of the expansion chamber 351 from being affected by burrs and protrusions when contacting the side of the cabinet, resulting in damage to the elastic layer 35;

[0088] Since the heights of the lifting columns 3 at both sides of the placement plate 2 in the Y-axis direction are relatively high, when the staff adjusts and moves the position of the cabinet on the placement plate 2, the cabinet will be affected by the relatively high lifting columns 3 at both sides in the Y-axis direction, increasing the resistance of the cabinet to move in the Y-axis direction and guiding and restricting the movement of the cabinet, that is, avoiding or reducing the possibility of the cabinet slipping outside the placement plate 2 or falling during the movement on the placement plate 2;

[0089] By opening a card slot 22 in the installation hole, when the elastic layer 35 on the lifting column 3 below the cabinet starts to expand, the elastic layer 35 will be embedded in the card slot 22, improving the effect of clamping and limiting the lifting column 3 below the cabinet. When the lifting column 3 below the cabinet is clamped and limited only by the friction force between the elastic layer 35 and the inner wall of the installation hole, there may be a situation where the lifting column 3 is not firmly clamped, resulting in a tendency for the lifting column 3 to rise completely or incompletely;

[0090] By installing an elastic membrane 324 at the opening of the ventilation hole 321, the ventilation hole 321 is relatively closed to the outside, avoiding the situation where there is a gap between the pressure rod 36 and the ventilation hole 321 when the installation block 33 squeezes the pressure block, resulting in gas leakage in the ventilation hole 321;

[0091] A collection box 13 is installed between the guide roller 12 and the placement plate 2, and a brush 131 is installed on the collection box 13. When the cabinet to be welded changes its moving direction through the guide roller 12 and is transferred to the placement plate 2, the bottom surface of the cabinet will pass above the collection box 13, and the brush 131 will clean the bottom surface of the cabinet, removing the dust and impurities attached to the bottom surface of the cabinet.

[0092] At the same time, during the laser welding process, some particulate matter and welding fumes will also be generated. When this part of the particulate matter and welding fumes are not fully collected, the remaining part in the particulate matter and welding fumes will settle on the placement plate 2 and in the centralized trough 21. At this time, the surface of the placement plate 2 is cleaned to make the settled particulate matter or welding fumes enter the centralized trough 21 and then be collected into the collection box 13.

[0093] When the laser welding head 41 welds the cabinet, the cleaning mechanism installed on the laser welding head 41 blows gas to the welding part through the blow pipe 441 and sucks gas from the welding part through the suction pipe 442, thereby forming a relatively stable and directional air flow on both sides of the welding part, facilitating the removal and cleaning of the particulate matter and welding fumes generated during welding. At the same time, since the blow pipe 441 and the suction pipe 442 are made of flexible hoses, when the robotic arm 4 drives the laser welding head 41 to move and rotate, the blow pipe 441 and the suction pipe 442 will automatically abut against the surface of the cabinet and undergo adaptive deformation, without interfering with the movement and rotation of the laser welding head 41 while ensuring the cleaning of the particulate matter and welding fumes.

[0094] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding device for electrical equipment processing, comprising a bottom plate (1), the bottom plate (1) is installed on a frame (11), a placement plate (2) and a robotic arm (4) are installed on the bottom plate (1), a laser welding head (41) is installed on the robotic arm (4), and conveyors for loading and unloading are arranged on both sides of the welding device; the two ends of the placement plate (2) in the X-axis direction are installed with guide rollers (12); It is characterized in that: The placement plate (2) is provided with mounting holes, a lifting column (3) is slidably installed in the mounting holes, an installation block (33) is installed at the upper end of the lifting column (3), and a ball (34) is installed on the installation block (33); The lifting column (3) includes an upper ejector rod (32) and a lower ejector rod (31), the installation block (33) is located at the upper end of the upper ejector rod (32), a chute (322) is opened in the upper ejector rod (32), the upper end of the lower ejector rod (31) is installed in the chute (322), a buffer spring (312) is installed between the upper end of the lower ejector rod (31) and the top surface in the chute (322), the lower end of the lower ejector rod (31) is installed with an installation frame (14), a motor (141) is installed below the bottom plate (1), the motor (141) drives the installation frame (14) to lift through a lead screw, a retaining ring (323) is installed at the lower end of the upper ejector rod (32), a limiting frame (15) is installed below the bottom plate (1), the limiting frame (15) is located between the retaining ring (323) and the installation frame (14), and the limiting frame (15) supports the retaining ring (323); An elastic layer (35) is installed on the side surface of the upper ejector rod (32), an expansion cavity (351) is opened in the elastic layer (35), a ventilation hole (321) is opened in the upper ejector rod (32), the ventilation hole (321) is communicated with the expansion cavity (351), a communication hole (311) is opened in the lower ejector rod (31), and the communication hole (311) is communicated with the ventilation hole (321) through the chute (322), and the communication hole (311) is connected to an external gas source; The lifting column (3) first rises, then the expansion cavity (351) expands, and then moves downward; A control cavity (325) is opened in the upper ejector rod (32), a blocking ring (362) is slidably installed in the control cavity (325), a blocking block (363) is installed above the blocking ring (362), and the blocking ring (362) and the blocking block (363) cooperate with each other to form a one-way valve structure that conducts unidirectionally from bottom to top; The blocking block (363) is installed in the control cavity (325) through a movable frame (364), an extrusion frame (361) is installed on the blocking ring (362), a pressure rod (36) is installed on the extrusion frame (361), the pressure rod (36) is located in the ventilation hole (321) above the control cavity (325), the upper end of the pressure rod (36) is connected to the installation block (33), and a deformation layer (331) is installed between the installation block (33) and the upper ejector rod (32).

2. The laser welding device for processing electrical equipment according to claim 1, characterized in that: There are multiple groups of the elastic layer (35) arranged from top to bottom. There are stepped protrusions (352) provided on the surface of the elastic layer (35), and the thickness of the side wall of the expansion cavity (351) near the upper part is smaller than that of the lower part.

3. The laser welding device for processing electrical equipment according to claim 1, wherein: The lifting columns (3) at both sides of the placing plate (2) along the Y-axis direction are higher in height than the lifting columns (3) at other positions.

4. The laser welding device for electrical equipment processing according to claim 1, characterized in that: A clamping groove (22) is formed on the inner wall of the mounting hole, and the diameter of the clamping groove (22) is larger than the diameter of the elastic layer (35) in its initial state.

5. The laser welding device for processing electrical equipment according to claim 1, wherein: An elastic membrane (324) is installed at the opening of the ventilation hole (321) at the upper end of the upper ejector rod (32). The upper surface of the elastic membrane (324) is in contact with the lower surface of the mounting block (33). The elastic membrane (324) closes the opening of the ventilation hole (321). The upper end of the pressure rod (36) abuts against the lower surface of the elastic membrane (324), and the cross-section of the elastic membrane (324) is an upwardly convex arc.

6. The laser welding device for electrical equipment processing according to claim 1, wherein: A concentrating groove (21) is formed on the surface of the placing plate (2). The concentrating groove (21) is located at the position between the mounting holes. The bottom surface of the concentrating groove (21) near the negative X-axis direction end is higher than that of the other end. A collecting box (13) is installed between the guide roller (12) and the placing plate (2), and brush hairs (131) are installed in the collecting box (13).

7. The laser welding device for processing electrical equipment according to claim 1, characterized in that: A cleaning mechanism is installed on the laser welding head (41). The cleaning mechanism includes a connecting ring (42), an air pipe (43) and a contact pipe (44). The air pipe (43) is communicated with the contact pipe (44) through the connecting ring (42), and the air pipe (43) is connected to an external air source. The connecting ring (42) includes an air inlet ring (421) and an air outlet ring (422). An inlet pipe (431) and a blowing pipe (441) are connected to the air inlet ring (421), and a discharge pipe (432) and a suction pipe (442) are connected to the air outlet ring (422). The blowing pipes (441) and the suction pipes (442) are symmetrically distributed around the laser welding head (41). There are multiple groups of the blowing pipes (441) and the suction pipes (442) evenly distributed around the laser welding head (41). The blowing pipes (441) and the suction pipes (442) are made of elastic hoses.

Images