Multi-station linkage laser welding device for skylight and welding method of multi-station linkage laser welding device

Abstract

The invention discloses a multi-station linkage laser welding device for a skylight and a welding method of the multi-station linkage laser welding device, and relates to the technical field of laser welding. The multi-station linkage laser welding device comprises a base, the front end and the rear end of the base are provided with swingable clamping pieces, and the clamping pieces are included-angle-shaped limiting profiles; the base extends outwards to form a positioning groove, a pressure detection unit is arranged in the positioning groove to obtain the weight of the profile, the length of the profile is determined based on the weight of the profile, a guide rail is arranged on the outer side of the positioning groove, the guide rail and the positioning groove extend in the same direction, and a supporting piece is arranged on the outer side of the guide rail to support the profile; the end of the supporting part is provided with at least one inclined positioning head making contact with the side wall of the sectional material, and the supporting part clamps the sectional material through the positioning head and drives the sectional material to turn over through rotation of the positioning head. When the sectional material is welded, the middle section position of each sectional material can be determined, the sectional materials are reversed by clamping the middle section positions of the sectional materials, welding machining of at least four edges of the sectional materials is achieved, and the welding efficiency is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to a multi-station linkage laser welding device for a skylight and a welding method thereof. Background Art

[0002] Building skylights usually consist of the following structures: Frame structure: The frame is the main load-bearing structure of the skylight, usually made of metal (such as aluminum alloy or stainless steel). The design of the frame should take into account the ease of installation, strength and durability.

[0003] Glass panels: The glass panels of skylights are usually double-layer or triple-layer insulating glass to provide good thermal and sound insulation. The glass panels can also be strengthened to improve their impact resistance.

[0004] Among them, the frame structure is processed into a frame by welding the profile.

[0005] Announcement No. CN218533229U discloses a multi-station welding workbench for a laser welding machine, including a workbench mounting seat, a connecting seat is installed on the top of the workbench mounting seat, a multi-station mounting frame is placed on the top of the workbench mounting seat, and a multi-station positioning fixture is arranged on the top of the multi-station mounting frame; when the laser welding arm is running, the outer side of the connecting line is squeezed and reinforced by fixing the reinforcement sleeve and rotating the reinforcement sleeve, thereby enhancing the strength of the connecting part between the connecting line and the laser welding machine body, and ensuring the stability of the multi-station welding; a stabilizing mechanism is provided, and when the multi-station mounting frame is placed on the top of the workbench mounting seat, the support area of ​​the outer side of the multi-station mounting frame is increased by a rubber plate, thereby improving the stability of the multi-station mounting frame when placed, which helps to improve the stability during laser welding.

[0006] Since the frame profiles are all hollow, the welding position of the frame is the inclined surface of the profile splicing. When welding, the stability of the profile is ensured by clamping to ensure the accuracy of laser welding, as shown in the above patent. The laser welding assembly is usually multi-axis and can adjust different welding positions, but for the connection position of the profile, at least four edges need to be welded. After the profile is clamped, there will always be one side that cannot be welded, and at least two clampings are required to complete the welding of the profile.

[0007] To this end, the present application proposes a laser welding device for welding a skylight frame. Summary of the invention

[0008] One of the purposes of the present invention is to provide a multi-station linkage laser welding device and a welding method for a skylight, which can realize multi-station linkage welding, determine the middle position of the profile, flip the profile, and clamp the profile again, thereby improving the profile welding efficiency.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-station linkage laser welding device for a skylight, comprising a workbench as a supporting structure, the workbench is on the ground, a four-axis motion system is arranged on the upper part of the workbench, and the motion end of the four-axis motion system is used to install a laser component for welding the profile, and the four-axis motion system realizes the movement of the laser component in the X, Y, and Z axes and the control of the circumferential rotation along the Y axis; The top of the workbench is a connecting plate with multiple openings, and the components can be fixed at multiple positions of the connecting plate by bolts.

[0010] The laser welding device also includes: The base is installed on the top of the workbench. The front and rear ends of the base are provided with swingable clamping parts. The profile is clamped and positioned by the clamping parts. The clamping parts restrict the profile in an angle shape. The base extends outwardly from a positioning groove, the positioning groove is located below the profile, a pressure detection unit is arranged inside the positioning groove to obtain the weight of the profile, and the length of the profile is determined based on the weight of the profile, a guide rail is arranged outside the positioning groove, and the guide rail and the positioning groove extend in the same direction, wherein a support member is arranged outside the guide rail to support the profile; The moving frame is installed on the outside of the guide rail and can slide relative to the guide rail. A swingable support part is arranged on the top of the moving frame. The support part can swing relative to the moving frame, and at least one positioning head that contacts the side wall of the profile and is inclined is arranged at the end of the support part. The support part clamps the profile through the positioning head and drives the profile to flip by rotating the positioning head.

[0011] In one or more embodiments of the present invention, the positioning head comprises: The positioning seat is installed at one end of the supporting part extending outwards, a servo motor is arranged in the middle of the mounting seat, and a mounting frame is arranged at the output end of the servo motor to drive the mounting frame to rotate; A flexible head is arranged at one end of the mounting frame facing the profile, and the side of the flexible head in contact with the profile is an inclined surface. A support rod is arranged inside the flexible head and extends into the mounting frame. An electromagnet is arranged inside the mounting frame, and the electromagnet is energized to change the telescopic length of the support rod.

[0012] In one or more embodiments of the present invention, a hydraulic cavity is disposed inside the mounting frame, and a magnetic pressure plate is disposed inside the hydraulic cavity, and the magnetic pressure plate cooperates with an electromagnet to control the flow of the medium inside the hydraulic cavity; The hydraulic cavity extends outwardly with hydraulic pipes having the same number as the support rods. The support rods extend into the hydraulic pipes and contact the medium. The flow of the medium changes the telescopic length of the support rods. One end of the support rod extending into the flexible head is spherical and is equipped with a clamp connected to the support rod. The clamp can swing relative to the support rod. When the flexible head contacts the profile surface and deforms, the clamp contacts the outer surface of the flexible head parallel to the profile.

[0013] In one or more embodiments of the present invention, the support member comprises: A hydraulic cylinder and an electric telescopic rod are installed inside the motion frame. The electric telescopic rod and one end of the hydraulic cylinder can be swung and installed inside the motion frame, and the other end of the hydraulic cylinder supports the electric telescopic rod. The hydraulic cylinder supports the electric telescopic rod to change the swing angle of the electric telescopic rod. The positioning seat is installed at the telescopic end of the electric telescopic rod, and the electric telescopic rod cooperates with the hydraulic cylinder to change the height of the positioning seat.

[0014] In one or more embodiments of the present invention, a driving unit is disposed inside the motion frame to change the position of the motion frame, and the driving unit includes: The slide is located inside the guide rail, the slide is connected to the positioning groove, the motion frame is installed outside the screw rod inside the slide, and the slide drives the motion frame to move along the direction set by the guide rail; A positioning boss is arranged at one end of the moving frame away from the extension direction of the electric telescopic rod. The positioning boss is higher than the upper surface of the positioning groove. An arc spring piece is arranged inside the positioning boss. One end of the arc top spring piece contacts and is connected to the positioning boss.

[0015] In one or more embodiments of the present invention, the pressure detection unit is composed of a plurality of pressure sensor arrays, and the plurality of pressure sensors are installed inside the positioning groove, and a detection plate is configured on the top of the pressure sensor, and the upper surface of the detection plate and the upper surface of the positioning groove are in the same plane; The pressure detection unit is also equipped with a transmission module, which is used to transmit the pressure data to the control terminal, and the control terminal is used to set the profile cross-sectional area and profile material.

[0016] In one or more embodiments of the present invention, the clamping member comprises: The angle bracket has a rotating shaft disposed inside thereof, the rotating shaft is rotatably disposed inside the angle bracket, and a first magnetic ring is disposed outside the rotating shaft, and the first magnetic ring is fixed outside the rotating shaft; An elastic roller is sleeved on the outer side of the rotating shaft, a second magnetic ring is arranged inside the elastic roller, the first magnetic ring and the second magnetic ring are arranged coaxially, a thread-shaped protrusion is formed on the outer side of the elastic roller, the middle part of the elastic roller is hollow, and the second magnetic ring can slide on the outer side of the first magnetic ring; The driving motor is installed on the inner side of the angle frame, connected with the rotating shaft and drives the rotating shaft to rotate.

[0017] In one or more embodiments of the present invention, the clamping member further comprises: The telescopic frame is installed on the inner side of the base. A micro telescopic rod is arranged inside the telescopic frame. The micro telescopic rod controls the telescopic position of the telescopic frame. The gusset plate can be swingably set on the inner side of the angle frame. Both ends of the gusset plate are magnetically set, and a magnetic plate is arranged inside the angle frame to magnetically attract both ends of the gusset plate. The profile slides to change the position of the gusset plate.

[0018] In one or more embodiments of the present invention, the corner frame can be swung to connect the telescopic frame, the base limits the swing angle of the corner frame, and magnetic blocks are disposed on the inner side of the base and the inner side of the corner frame, and the magnetic blocks cooperate with each other to position the corner frame; An elastic member, installed inside the base to support the diagonal frame; The magnetic block arranged on the inner side of the base is an electromagnetic block. When the electromagnetic block is powered on, the angle bracket does not swing. When the electromagnetic block is powered off, the angle bracket moves under the action of external force.

[0019] The embodiment of the present application also provides a multi-station linkage welding method, which is used for the above-mentioned welding device, and includes the following steps: Determine the required length of welding profile and cut the profile; The profile is pushed into the inner side of the clamp, the two profiles are butted together, and a welding is performed. The pressure detection unit determines the weight of the profile, and the length of the profile is determined based on the weight, material and cross-sectional area of ​​the profile; The moving frame drives the positioning head to move to the middle section of the profile, and the positioning head clamps the profile and drives the profile to flip; The clamping part swings to the reverse position, clamps the profile again, performs secondary welding, and removes the profile after welding is completed.

[0020] Through the above technical solution, the present invention has the following beneficial effects: 1. When performing welding processing on profiles, the present application can determine the middle position of each profile, and reverse the profile by clamping the middle position of the profile to achieve welding processing on at least four sides of the profile, thereby ensuring welding efficiency and reducing manual participation during welding of the profile, thereby achieving automatic welding of the profile.

[0021] 2. Since the profile is an extruded profile, its cross-sectional shape is consistent. After determining the cross-sectional area and material of the profile, the middle position of the profile can be calculated by obtaining the weight of the profile, and then the middle position of the profile can be clamped. The profile can be reversed with the middle position of the profile as the center, thereby minimizing the space required for reversing the profile.

[0022] 3. The setting of the positioning boss of the moving frame can be used to position the profile. After the profile is reversed, it can ensure that the profile fits the angle frame stably and ensure that the middle position of the profile corresponds to the welding position.

[0023] 4. The swingable clamping parts can realize the clamping of the profile in both inside and outside directions. After the profile is turned over, the profile can still be clamped, which further ensures the stability of the profile.

[0024] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the connection plate installation structure of the present invention; Figure 3 It is a schematic diagram of the structure of the four-axis motion system and the laser head of the present invention; Figure 4 The base installation structure of the present invention is shown in FIG. Figure 1 ; Figure 5 The base installation structure of the present invention is shown in FIG. Figure 2 ; Figure 6 A half-section view of a base of the present invention; Figure 7 It is a schematic diagram of the internal structure of the base of the present invention; Figure 8 It is a schematic diagram of the positioning groove, the moving frame and the clamping member structure of the present invention; Fig. 9 It is a schematic diagram of the inner structure of the angle bracket of the present invention; Fig.10 It is a plan view of the gusset plate structure of the present invention; Fig.11 It is a schematic diagram of the internal structure of the positioning groove of the present invention; Fig.12 It is a schematic diagram of the guide rail structure of the present invention; Fig.13 A schematic diagram of a sports frame of the present invention; Fig.14 is a cross-sectional view of a positioning head of the present invention; Fig.15 It is a partial schematic diagram of the positioning head of the present invention.

[0026] In the figure: 1 workbench, 2 connecting plate, 3 base, 4 positioning groove, 5 pressure detection unit, 6 guide rail, 7 motion frame, 8 support part, 9 positioning head, 10 four-axis motion system, 11 laser assembly, 12 clamping part; 91 positioning seat, 92 servo motor, 93 flexible head, 94 support rod, 95 electromagnet, 96 hydraulic chamber, 97 pressure plate, 98 clamping plate; 81 hydraulic cylinder, 82 electric telescopic rod; 71 sliding table, 72 positioning boss, 73 arc-shaped spring piece; 51 pressure sensor, 52 detection board, 53 transmission module; 121 angle bracket, 122 first magnetic ring, 123 second magnetic ring, 124 elastic roller, 125 driving motor, 126 telescopic bracket, 127 miniature telescopic rod, 128 buckle plate, 129 magnetic plate; 13 elastic member, 14 magnetic block. DETAILED DESCRIPTION

[0027] The following will disclose multiple embodiments of the present invention with the accompanying drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. And if it is possible to implement, the features of different embodiments can be applied interchangeably.

[0028] Unless otherwise defined, all words (including technical and scientific terms) used herein have their usual meanings, which can be understood by those familiar with this field. Furthermore, the definitions of the above words in commonly used dictionaries should be interpreted in the content of this specification as consistent with the meanings of the relevant fields of the present invention. Unless otherwise clearly defined, these words will not be interpreted as idealized or overly formal meanings.

[0029] The following is an explanation of the relationships and terms used in this application: Parallel: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism, which allows for non-absolute parallelism due to factors such as assembly tolerance, design tolerance, and the influence of structural flatness. Small angular errors are allowed. For example, an assembly error range of less than 10 degrees can be understood as a parallel relationship.

[0030] Vertical: The verticality defined in this application is not limited to an absolute vertical intersection relationship (angle of 90 degrees). It allows for non-absolute vertical intersection relationships caused by factors such as assembly tolerance, design tolerance, and influence of structural flatness. It also allows for errors in a small angle range. For example, the assembly error range of 80 to 100 degrees can be understood as a vertical relationship.

[0031] Floor: The floor defined in this application is not limited to a certain material or region, but only a platform for carrying this application, and stacking, tilting, and flatness changes are allowed. For example, cement floor, tile floor, work platform, etc. can all be interpreted as floor.

[0032] The above explanation does not completely include the relationship definitions given in this application, but only represents part of it.

[0033] The present invention provides a multi-station linkage laser welding device for a skylight, which is used for laser welding processing of skylight profiles, and achieves welding of the profiles through multiple stations without the need for multiple clamping and fixing.

[0034] See also Figure 1-5 As shown, in one embodiment, a workbench 1 is included as a supporting structure, the workbench 1 is placed on the ground, a four-axis motion system 10 is arranged on the upper part of the workbench 1, and the motion end of the four-axis motion system 10 is used to install a laser component 11 for welding the profile, and the four-axis motion system 10 realizes the movement of the laser component 11 in the X, Y, and Z axes and the control of the circumferential rotation along the Y axis; The top of the workbench 1 is a connecting plate 2 with multiple openings, and components can be fixed at multiple positions of the connecting plate 2 by bolts.

[0035] The laser welding device also includes: The base 3 is installed on the top of the workbench 1. The front and rear ends of the base 3 are provided with swingable clamping members 12. The profile is clamped and positioned by the clamping members 12. The clamping members 12 restrict the profile in an angled shape. The base 3 extends outwardly to form a positioning groove 4, which is located below the profile. A pressure detection unit 5 is arranged inside the positioning groove 4 to obtain the weight of the profile, and the length of the profile is determined based on the weight of the profile. A guide rail 6 is arranged outside the positioning groove 4, and the guide rail 6 extends in the same direction as the positioning groove 4. A support member is arranged outside the guide rail 6 to support the profile. The moving frame 7 is installed on the outside of the guide rail 6 and can slide relative to the guide rail 6. A swingable support portion 8 is set on the top of the moving frame 7. The support portion 8 can swing relative to the moving frame 7, and at least one positioning head 9 that contacts the side wall of the profile and is inclined is arranged at the end of the support portion 8. The support portion 8 clamps the profile through the positioning head 9 and uses the rotation of the positioning head 9 to drive the profile to flip.

[0036] In one feasible method, since at least four sides of the profile need to be welded, after the profile is clamped, the bottom is not convenient to be welded by the laser assembly 11. Therefore, after the profile is clamped and welded once, the profile needs to be flipped over and welded again. The weight of the profile is calculated, and the length of the profile is determined based on the weight of the profile. The middle position of the profile is determined, and the profile is clamped at the middle position to achieve flipping of the profile.

[0037] Among them, since the length of the profile to be welded each time is uncertain, the material and cross-sectional shape of the profile can be set when welding the profile, and the middle position of the profile can be determined based on the material, cross-sectional shape and weight of the profile. The middle position of the profile does not need to be too precise, because the calculation of the middle position of the profile is only used to avoid the problem of one end of the profile being too long when flipping the profile, causing the profile to collide with the laser assembly 11 during the flipping process. Therefore, errors in the calculation of the middle position of the profile are allowed.

[0038] However, since the profile will fit into the pressure detection unit 5 during welding and the profile cannot be flipped, the support part 8 is used to change the height of the positioning head 9. The support part 8 lifts the profile to a certain height so that the positioning head 9 drives the profile to rotate during the rotation process, thereby realizing the flipping of the profile.

[0039] See also Figure 14-15 As shown, in one embodiment, the positioning head 9 includes: The positioning seat 91 is installed at one end of the support portion 8 extending outward, and a servo motor 92 is arranged in the middle of the mounting seat. The output end of the servo motor 92 is arranged with a mounting frame to drive the mounting frame to rotate; A flexible head 93 is arranged at one end of the mounting frame facing the profile, and the side of the flexible head 93 in contact with the profile is an inclined surface. A support rod 94 is arranged inside the flexible head 93 and extends into the inside of the mounting frame. An electromagnet 95 is arranged inside the mounting frame, and the electromagnet 95 changes the telescopic length of the support rod 94 when energized.

[0040] In this embodiment, the clamping force of the profile can be controlled by changing the telescopic length of the support rod 94. During the flipping of the profile, the stability of the profile can be ensured to prevent the profile from loosening and slipping. The elastic setting of the flexible head 93 can fit the surface of the profile according to the squeezing of the support rod 94 during use, that is, when the profile is not completely at the corresponding angle, it can also achieve the purpose of complete contact with the profile.

[0041] The setting of the servo motor 92 can control the flipping angle of the profile. After the profile is clamped by the flexible head 93, the servo motor 92 drives the mounting frame to flip to control the angle position of the profile, and the electromagnet 95 adjusts the position of the support rod 94. When the profile is welded, it does not contact the profile to avoid affecting the stability of the profile. When the profile is flipped after welding, the profile is clamped and flipped.

[0042] See also Figure 14-15 As shown, in one embodiment, a hydraulic cavity 96 is disposed inside the mounting frame, and a magnetic pressure plate 97 is disposed inside the hydraulic cavity 96. The magnetic pressure plate 97 cooperates with an electromagnet 95 to control the flow of the medium inside the hydraulic cavity 96. The hydraulic chamber 96 extends outwardly to form hydraulic pipes having the same number as the support rods 94. The support rods 94 extend into the hydraulic pipes and contact the medium. The flow of the medium changes the telescopic length of the support rods 94. One end of the support rod 94 extending into the interior of the flexible head 93 is spherical and is equipped with a clamp 98 connected to the support rod 94. The clamp 98 can swing relative to the support rod 94. When the flexible head 93 contacts the profile surface and deforms, the clamp 98 contacts the outer surface of the flexible head 93 parallel to the profile.

[0043] In one practicable manner, a hydraulic chamber 96 is configured and filled with hydraulic oil, and the magnetic force of the electromagnet 95 is used to control the pressure plate 97 to make corresponding movements, so that the medium inside the hydraulic chamber 96 moves, and the telescopic length of the support rod 94 is controlled.

[0044] Among them, when multiple support rods 94 are set, multiple support rods 94 can be controlled to move outward at the same time, and because the pressure of the medium is constant, when there is an angle difference in the mold plate, the mold plate can be stably contacted at multiple points to form an effective clamp, avoiding the problem that some contact points cannot stably apply clamping force due to the angle difference of the mold plate.

[0045] Through the spherical connection between one end of the support rod 94 and the clamping plate 98, the clamping plate 98 can swing within a certain range, so that the clamping plate 98 can be parallel to the outer surface of the template and stably clamp the extrusion force on the flexible head 93.

[0046] See also Fig.13 As shown, in one embodiment, the support member includes: A hydraulic cylinder 81 and an electric telescopic rod 82 are installed inside the motion frame 7. The electric telescopic rod 82 and one end of the hydraulic cylinder 81 can be swung inside the motion frame 7, and the other end of the hydraulic cylinder 81 supports the electric telescopic rod 82. The hydraulic cylinder 81 supports the electric telescopic rod 82 to change the swing angle of the electric telescopic rod 82. The positioning seat 91 is installed at the telescopic end of the electric telescopic rod 82 , and the electric telescopic rod 82 cooperates with the hydraulic cylinder 81 to change the height of the positioning seat 91 .

[0047] In one feasible method, the position of the positioning head 9 is adjusted by using the cooperation of the electric telescopic rod 82 and the hydraulic cylinder 81. Firstly, it can achieve the purpose of changing the position of the positioning head 9. Secondly, it can have a better installation position. Compared with the method of directly installing the electric telescopic rod 82 inside the moving frame 7 to support the positioning head 9, it can more reasonably utilize the space above the workbench 1. Directly installing the electric telescopic rod 82 requires extending the electric telescopic rod 82 to the inside of the workbench 1.

[0048] See also Figure 11-12As shown, in one embodiment, a driving unit is configured inside the moving frame 7 to change the position of the moving frame 7, and the driving unit includes: The slide 71 is located inside the guide rail 6. The slide 71 is connected to the positioning groove 4. The moving frame 7 is installed outside the screw rod inside the slide 71. The slide 71 drives the moving frame 7 to move along the setting direction of the guide rail 6. A positioning boss 72 is arranged at one end of the moving frame 7 away from the extending direction of the electric telescopic rod 82 . The positioning boss 72 is higher than the upper surface of the positioning groove 4 . An arc-shaped spring piece 73 is arranged inside the positioning boss 72 . One end of the arc-shaped spring piece contacts and is connected to the positioning boss 72 .

[0049] In one feasible method, the position of the moving frame 7 is changed by using a slide 71 disposed on the inner side of the moving frame 7 to adjust the position of the moving frame 7 so that the positioning head 9 can be moved to the middle position of the profile according to the length of the profile, thereby controlling the position of the moving frame 7.

[0050] Among them, since the profile is not in a state of being close to the clamping part 12 after the flipping is completed, it is necessary to push the profile so that the profile can move to the position of the clamping part 12. Therefore, a positioning boss 72 and an arc-shaped spring piece 73 extending to the outside of the positioning boss 72 are provided. When the slide 71 drives the moving frame 7 to move, the arc-shaped spring piece 73 contacts the profile and pushes the profile to move, so that the profile moves to the middle position of the clamping part 12.

[0051] See also Fig.11 As shown, in one embodiment, the pressure detection unit 5 is composed of an array of multiple pressure sensors 51, and the multiple pressure sensors 51 are installed inside the positioning groove 4. A detection plate 52 is configured on the top of the pressure sensor 51, and the upper surface of the detection plate 52 is in the same plane as the upper surface of the positioning groove 4; The pressure detection unit 5 is further configured with a transmission module 53, which is used to transmit pressure data to a control terminal, and the control terminal is used to set the cross-sectional area and material of the profile.

[0052] In one practicable manner, the control terminal may be a control panel for controlling the laser welding device, a portable terminal device, or a computer. Figure 1 As shown, the control terminal is a computer.

[0053] A plurality of pressure sensors 51 are installed inside the positioning groove 4 to detect the pressure of the template, determine the weight of the profile, and determine the length of the profile by the material, cross-sectional area and weight of the profile. For example: The material density ρ of the profile is expressed in kilograms per cubic meter kg / m³.

[0054] The cross-sectional area A of the profile is in square meters (m²).

[0055] The total weight W of the profile is in kilograms.

[0056] Calculate volume: The volume V of the profile is calculated by the density and weight of the profile. The formula is: ; Calculate the length: The length L of the profile is calculated by the volume and cross-sectional area of ​​the profile. The formula is: ; Substitute the volume calculated in the first step into the formula: .

[0057] See also Figure 8-10 As shown, in one embodiment, the clamping member 12 includes: The angle frame 121 has a rotating shaft disposed inside thereof. The rotating shaft is rotatably disposed inside the angle frame 121. A first magnetic ring 122 is disposed outside the rotating shaft. The first magnetic ring 122 is fixed outside the rotating shaft. The elastic roller 124 is sleeved on the outer side of the rotating shaft. The second magnetic ring 123 is configured inside the elastic roller 124. The first magnetic ring 122 and the second magnetic ring 123 are coaxially arranged. A thread-shaped protrusion is formed on the outer side of the elastic roller 124. The middle part of the elastic roller 124 is hollow, and the second magnetic ring 123 can slide on the outer side of the first magnetic ring 122. The driving motor 125 is installed inside the angle bracket 121 and connected to the rotating shaft to drive the rotating shaft to rotate.

[0058] In one feasible method, the driving motor 125 drives the first magnetic ring 122 and the second magnetic ring 123 to rotate by rotating the roller, and utilizes the friction between the elastic roller 124 and the surface of the profile to make the profile fit the inner wall of the angle frame 121, thereby ensuring the stability and precision of the profile. The hollow setting of the elastic roller 124 enables the elastic roller 124 to have a greater deformation amount, thereby adapting to the positioning of profiles with a wider range of specifications.

[0059] In another embodiment, since the first magnetic ring 122 and the second magnetic ring 123 are only in contact with each other, they are unstable during the rotation of the first magnetic ring 122 and the second magnetic ring 123. Therefore, a meshing ring is arranged between the first magnetic ring 122 and the second magnetic ring 123, and the inner and outer meshing rings are respectively fixed to the outer wall of the first magnetic ring 122 and the inner wall of the second magnetic ring 123. The inner and outer meshing rings can slide with each other, and when the first magnetic ring 122 rotates, the second magnetic ring 123 is driven to rotate through the inner and outer meshing rings.

[0060] See also Figure 6-7 As shown, in one embodiment, the clamping member 12 further includes: The telescopic frame 126 is installed on the inner side of the base 3. A miniature telescopic rod 127 is arranged inside the telescopic frame 126. The miniature telescopic rod 127 controls the telescopic position of the telescopic frame 126. The gusset plate 128 can be swingably set inside the angle frame 121. Both ends of the gusset plate 128 are magnetically set, and a magnetic plate 129 is configured inside the angle frame 121 to magnetically attract both ends of the gusset plate 128. The profile slides to change the position of the gusset plate 128.

[0061] In one feasible manner, the gusset plate 128 can be used to restrict the profile, so that the gusset plate 128 can contact the profile, thereby stabilizing the profile and further achieving clamping of the profile.

[0062] In another embodiment, in order to make the corner bracket 121 adaptable to profiles of different specifications, the corner bracket 121 adopts a split telescopic setting, and is configured with a positioning ball to limit the corner bracket 121. The upper part of the corner bracket 121 is inserted into the lower part of the corner bracket 121, and a spring is configured inside the lower part to support the positioning ball. The upper part of the corner bracket 121 has a recess corresponding to the positioning ball.

[0063] See also Figure 7 As shown, in one embodiment, the corner frame 121 can be swung to connect the telescopic frame 126, the base 3 limits the swing angle of the corner frame 121, and the inner side of the base 3 and the inner side of the corner frame 121 are both provided with magnetic blocks 14, and the magnetic blocks 14 cooperate with each other to position the corner frame 121; The elastic member 13 is installed inside the base 3 to support the diagonal frame 121; The magnetic block 14 disposed inside the base 3 is an electromagnetic block 14. When the electromagnetic block 14 is powered on, the angle bracket 121 does not swing. When the electromagnetic block 14 is powered off, the angle bracket 121 moves under the action of an external force.

[0064] In one feasible method, the corner brackets 121 are used to restrict the profile, so as to ensure the stable fit of the profile to the corner brackets 121 and the stability of the profile during the welding process. Moreover, since the profile is at a right angle during the welding process, after the profile fits the corner brackets 121 on both sides, the stability of the welding connection position can be guaranteed.

[0065] Optionally, the elastic member 13 is a compression spring, which supports the corner frame 121. When the supporting force of the compression spring is smaller than the magnetic force of the magnetic blocks 14 attracted to each other, after the electromagnetic block 14 is energized, the magnetic block 14 is attracted to the magnetic block 14. This ensures the stability of the corner frame 121 even with the support of the compression spring, thereby preventing the shaking of the corner frame 121 from causing the profile to deviate.

[0066] The embodiment of the present application also provides a multi-station linkage welding method, which is used for the above-mentioned welding device, and includes the following steps: Determine the required length of welding profile and cut the profile; The profile is pushed into the inner side of the clamp 12, the two profiles are butted together, and a welding is performed. The pressure detection unit 5 determines the weight of the profile, and determines the length of the profile according to the weight, material and cross-sectional area of ​​the profile; The moving frame 7 drives the positioning head 9 to move to the middle section of the profile, and the positioning head 9 clamps the profile and drives the profile to flip; The clamping member 12 swings to the reverse position, clamps the profile again, performs secondary welding, and removes the profile after welding is completed.

[0067] Among them, in order to realize the linkage of the two workstations and improve the welding efficiency, welding is carried out in a three-in-one combination, that is, one workstation performs three-side welding, and the other workstation performs one-side welding. First, one side welding is carried out, and when the other workstation performs three-side welding, the profile welded on one side is reversed.

[0068] Although the present invention is disclosed in conjunction with the above embodiments, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the attached claims.

Claims

1. A multi-station linkage laser welding device for a skylight, comprising a workbench (1) as a supporting structure, the workbench (1) being placed on the ground, a four-axis motion system (10) being arranged on the upper part of the workbench (1), and a motion end of the four-axis motion system (10) being used to install a laser assembly (11) for welding a profile; The top of the workbench (1) is a connecting plate (2) with multiple openings, and the components can be fixed to multiple positions of the connecting plate (2) by bolts; the feature is that: The laser welding device also includes: A base (3) is mounted on the top of the workbench (1), and swingable clamping members (12) are provided at the front and rear ends of the base (3). The profile is clamped and positioned by the clamping members (12), and the clamping members (12) restrict the profile in an angled manner; The base (3) extends outwardly to form a positioning groove (4), the positioning groove (4) being located below the profile, the positioning groove (4) being internally provided with a pressure detection unit (5) for obtaining the weight of the profile, and determining the length of the profile based on the weight of the profile, the positioning groove (4) being externally provided with a guide rail (6), the guide rail (6) and the positioning groove (4) extending in the same direction, wherein a support member is provided externally of the guide rail (6) for supporting the profile; A moving frame (7) is mounted on the outside of the guide rail (6) and is capable of sliding relative to the guide rail (6). A swingable support portion (8) is arranged on the top of the moving frame (7). The support portion (8) is capable of swinging relative to the moving frame (7). At least one positioning head (9) that contacts the side wall of the profile and is inclined is arranged at the end of the support portion (8). The support portion (8) clamps the profile through the positioning head (9) and drives the profile to flip by rotating the positioning head (9).

2. The multi-station laser welding device for skylights according to claim 1 is characterized in that: The positioning head (9) comprises: A positioning seat (91) is mounted on an end of the support portion (8) extending outward, a servo motor (92) is disposed in the middle of the mounting seat, and a mounting frame is disposed at the output end of the servo motor (92) to drive the mounting frame to rotate; A flexible head (93) is arranged at one end of the mounting frame facing the profile, a side of the flexible head (93) in contact with the profile being an inclined surface, a support rod (94) is arranged inside the flexible head (93) and extends into the interior of the mounting frame, an electromagnet (95) is arranged inside the mounting frame, and the electromagnet (95) is energized to change the telescopic length of the support rod (94).

3. The multi-station laser welding device for skylights according to claim 2 is characterized in that: A hydraulic chamber (96) is disposed inside the mounting frame, and a magnetic pressure plate (97) is disposed inside the hydraulic chamber (96), wherein the magnetic pressure plate (97) cooperates with the electromagnet (95) to control the flow of the medium inside the hydraulic chamber (96); The hydraulic chamber (96) extends outwardly to form hydraulic pipes in the same number as the support rods (94); the support rods (94) extend into the hydraulic pipes and contact the medium; the flow of the medium changes the telescopic length of the support rods (94); One end of the support rod (94) extending into the interior of the flexible head (93) is spherical and is provided with a clamping plate (98) connected to the support rod (94). The clamping plate (98) can swing relative to the support rod (94). When the flexible head (93) contacts the surface of the profile and deforms, the clamping plate (98) contacts the outer surface of the flexible head (93) in parallel with the profile.

4. The multi-station laser welding device for skylights according to claim 3 is characterized in that: The support components include: A hydraulic cylinder (81) and an electric telescopic rod (82) are installed inside the moving frame (7); the electric telescopic rod (82) and one end of the hydraulic cylinder (81) can be swingably installed inside the moving frame (7); the other end of the hydraulic cylinder (81) supports the electric telescopic rod (82); the hydraulic cylinder (81) supports the electric telescopic rod (82) to change the swing angle of the electric telescopic rod (82); The positioning seat (91) is installed at the telescopic end of the electric telescopic rod (82), and the electric telescopic rod (82) cooperates with the hydraulic cylinder (81) to change the height of the positioning seat (91).

5. The multi-station laser welding device for skylights according to claim 4 is characterized in that: A driving unit is arranged inside the moving frame (7) to change the position of the moving frame (7), and the driving unit comprises: The slide (71) is located inside the guide rail (6). The slide (71) is connected to the positioning groove (4). The moving frame (7) is installed outside the screw rod inside the slide (71). The slide (71) drives the moving frame (7) to move along the direction in which the guide rail (6) is set. A positioning boss (72) is arranged at one end of the motion frame (7) away from the extension direction of the electric telescopic rod (82); the positioning boss (72) is higher than the upper surface of the positioning groove (4); an arc-shaped spring sheet (73) is arranged inside the positioning boss (72); one end of the arc-top spring sheet contacts the positioning boss (72) and is connected to the positioning boss (72).

6. The multi-station laser welding device for skylights according to claim 5 is characterized in that: The pressure detection unit (5) is composed of an array of multiple pressure sensors (51), the multiple pressure sensors (51) are all installed inside the positioning groove (4), a detection plate (52) is arranged on the top of the pressure sensor (51), and the upper surface of the detection plate (52) and the upper surface of the positioning groove (4) are in the same plane; The pressure detection unit (5) is further configured with a transmission module (53), the transmission module (53) being used to transmit pressure data to a control terminal, and the control terminal being used to set the profile cross-sectional area and profile material.

7. The multi-station laser welding device for skylights according to claim 6 is characterized in that: The clamping member (12) comprises: An angle frame (121) is provided with a rotating shaft inside, the rotating shaft is rotatably arranged inside the angle frame (121), and a first magnetic ring (122) is arranged outside the rotating shaft, and the first magnetic ring (122) is fixed outside the rotating shaft; An elastic roller (124) is sleeved on the outside of the rotating shaft, a second magnetic ring (123) is arranged inside the elastic roller (124), the first magnetic ring (122) and the second magnetic ring (123) are arranged coaxially, a thread-shaped protrusion is formed on the outside of the elastic roller (124), the middle of the elastic roller (124) is hollow, and the second magnetic ring (123) can slide on the outside of the first magnetic ring (122); The driving motor (125) is installed inside the angle frame (121) and connected to the rotating shaft to drive the rotating shaft to rotate.

8. The multi-station laser welding device for skylights according to claim 7 is characterized in that: The clamping member (12) further comprises: The telescopic frame (126) is installed on the inner side of the base (3), and a micro telescopic rod (127) is arranged inside the telescopic frame (126). The micro telescopic rod (127) controls the telescopic position of the telescopic frame (126); The gusset plate (128) is swingably arranged inside the angle frame (121), both ends of the gusset plate (128) are magnetically arranged, and a magnetic plate (129) is arranged inside the angle frame (121) for magnetically attracting both ends of the gusset plate (128), and the profile slides to change the position of the gusset plate (128).

9. The multi-station linkage laser welding device for a skylight according to claim 8, characterized in that: The corner frame (121) is swayably connected to the telescopic frame (126); the base (3) limits the swing angle of the corner frame (121); magnetic blocks (14) are disposed on the inner side of the base (3) and the inner side of the corner frame (121); the magnetic blocks (14) cooperate with each other to position the corner frame (121); An elastic member (13) is installed inside the base (3) and is used to support the diagonal frame (121); The magnetic block (14) disposed inside the base (3) is an electromagnetic block (14). When the electromagnetic block (14) is powered on, the angle bracket (121) does not swing. When the electromagnetic block (14) is powered off, the angle bracket (121) moves under the action of an external force.

10. A multi-station linkage welding method, used for the laser welding device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Determine the required length of welding profile and cut the profile; The profile is pushed into the inner side of the clamp (12), the two profiles are butted together, and a welding is performed. The pressure detection unit (5) determines the weight of the profile, and determines the length of the profile based on the weight, material and cross-sectional area of ​​the profile; The moving frame (7) drives the positioning head (9) to move to the middle section of the profile, and the positioning head (9) clamps the profile and drives the profile to flip; The clamping member (12) swings to the reverse position, clamps the profile again, performs secondary welding, and removes the profile after welding is completed.

Images