A laser welding workstation

Abstract

The present invention relates to the technical field of laser welding equipment, and specifically to a laser welding workstation, comprising a workroom assembly, a welding equipment assembly and a fixture displacement platform, wherein the welding equipment assembly is installed inside the workroom assembly, the fixture displacement platform is embeddedly installed on the edge of the workroom assembly, a plurality of tooling fixtures are fixedly installed on the working part of the fixture displacement platform, and the tooling fixtures are evenly distributed on both sides of a radial plane of the axis of the fixture displacement platform as a symmetry plane. When working, half of the tooling fixtures are located in the working range of the welding equipment assembly; the workstation can perform automatic laser welding processing on workpieces, and during the welding processing, the staff can load and unload the workpieces on the tooling fixtures.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding equipment, and in particular to a laser welding workstation. Background Art

[0002] Laser welding machine uses high-energy laser pulses to locally heat the material in a small area. The energy of laser radiation diffuses into the material through heat conduction, melts the material and forms a specific molten pool to achieve the purpose of welding. It is a new type of welding method, mainly for the welding of thin-walled materials and precision parts, and can realize spot welding, butt welding, lap welding, sealing welding, etc. It has the advantages of high aspect ratio, small weld width, small heat-affected zone, small deformation, fast welding speed, smooth and beautiful weld, no need for post-welding treatment or only simple treatment, high weld quality, no pores, precise control, small focus spot, high positioning accuracy, easy to realize automation, etc.

[0003] The laser welding devices of traditional laser welding workstations are fixed on the frame and can only serve one welding clamping table. During the preparatory work such as positioning the workpiece to be welded on the welding clamping table, the laser welding device is in a shutdown standby state. Therefore, the laser welding processing efficiency of the entire laser welding workstation is low and has not been improved for a long time. In addition, the traditional laser welding workstation has a low degree of automation and the workers have a high labor intensity, which also seriously affects the laser welding processing efficiency of the laser welding workstation. Solving the above problems has become a top priority.

[0004] Chinese patent CN106271136B discloses a laser welding workstation, including a work platform; a material storage system for storing workpieces to be welded; at least two welding clamping tables arranged on the work platform for clamping the workpieces to be welded; at least one mechanical arm assembly for grabbing the workpieces to be welded in the material storage system onto the welding clamping tables; and a laser welding device that can reciprocate above each welding clamping table.

[0005] The laser welding workbench disclosed in the patent has a laser welding device in a standby state during the reciprocating movement, and its efficiency still needs to be improved. In addition, there is a lack of partition between the two welding clamping tables, and workers are easily burned by the laser emitted by the laser welding machine. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a laser welding workstation, which can perform automatic laser welding processing on workpieces, and while the welding processing is being performed, the staff can load and unload the workpieces on the fixture.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A laser welding workstation includes a workroom assembly, a welding equipment assembly and a fixture displacement platform. The welding equipment assembly is installed inside the workroom assembly, and the fixture displacement platform is embeddedly installed on the edge of the workroom assembly. A plurality of tooling fixtures are fixedly installed on the working part of the fixture displacement platform. The tooling fixtures are evenly distributed on both sides of a radial plane of the axis of the fixture displacement platform as a symmetry plane. When working, half of the tooling fixtures are located in the working range of the welding equipment assembly.

[0009] Preferably, the workroom assembly includes a workstation protection room, a first opening exposing the welding equipment assembly is arranged on the side of the workstation protection room, a second opening exposing the top of the working interval of the fixture displacement platform is arranged on the side of the workstation protection room, a rolling door for covering the first opening is installed on the workstation protection room, a laser radiation protection lifting door intersecting with the axis of the fixture displacement platform and used to cover the second opening is installed on the workstation protection room, an exhaust fan located directly above the working interval of the welding equipment assembly is installed on the top of the workstation protection room, and a control panel is also installed on the side of the workstation protection room.

[0010] Preferably, the welding equipment assembly includes laser equipment, a laser water cooling system, a welding robot, a robot controller, a high-definition visual tracker, a welding laser head and a power control system. The laser equipment, the laser water cooling system, the welding robot, the robot controller and the high-definition visual tracker are all electrically connected to the power control system. The laser equipment, the welding robot and the high-definition visual tracker are all communicatively connected to the robot controller. The high-definition visual tracker and the welding laser head are both fixedly installed at the working end of the welding robot.

[0011] Preferably, the fixture displacement platform includes a frame, a precision dividing plate and a turntable, the precision dividing plate is fixedly installed inside the frame, the working end of the precision dividing plate is arranged vertically upward, the turntable is fixedly installed on the working end of the precision dividing plate, a gap is directly left between the top edge of the frame and the bottom of the turntable and a slewing bearing is installed in the gap, the fixed part of the slewing bearing is fixedly connected to the frame, the movable part of the slewing bearing abuts against the bottom surface of the turntable, and the turntable is fixedly connected to the tooling fixture.

[0012] Preferably, the slewing support includes a plurality of roller seats evenly distributed on the top of the frame around the axis of the turntable, the mounting holes of the roller seats are horizontally arranged, the roller seats are rotatably mounted with a first rotating shaft, the first rotating shaft is sleeved with a roller, the first rotating shaft is a 1 / 3 threaded bolt that passes through the mounting hole of the roller seat and is fixedly connected to the roller seat by a nut.

[0013] Preferably, the tooling fixture includes a first jig, a second jig, a first linear drive and a second linear drive fixedly mounted on the working part of the jig displacement platform, the working ends of the first linear drive and the second linear drive are arranged vertically upward, the working end of the first linear drive is fixedly mounted with a first pressure claw with both ends suspended directly above the first jig, and the working end of the second linear drive is fixedly mounted with a first pressure rod spanning directly above the second jig.

[0014] Preferably, an opening for avoiding the first protrusion of the workpiece is provided on one side of the bottom end of the first pressure rod, and a plurality of spring leaves suspended at the opening are installed on the first pressure rod, and the rebound direction of the opening is arranged toward the opening.

[0015] Preferably, the first tooling fixture also includes a third clamping mechanism, which includes a hinge fixedly mounted on the side of the second fixture away from the first pressure rod, the hinge's rotating shaft is horizontally arranged and parallel to the first pressure rod, the movable part of the hinge is fixedly mounted with a handle and a second rotating shaft, the handle extends perpendicularly to the hinge axis in a direction away from the hinge, the second rotating shaft extends parallel to the hinge axis toward both sides of the hinge, and a U-shaped card with a middle end parallel to the second protrusion of the workpiece is rotatably mounted on the second rotating shaft.

[0016] Preferably, the fourth tooling fixture includes a seventh fixture, an elastic pressing mechanism and an elastic lifting mechanism, the elastic pressing mechanism is located on both sides of the seventh fixture, the working end of the elastic pressing mechanism is located directly above the working surface of the seventh fixture, the elastic lifting mechanism is installed inside the seventh fixture, the seventh fixture is provided with a through hole exposing the working end of the elastic lifting mechanism, the elastic pressing mechanism includes a ninth lever cylinder and a second pressing claw installed at the working end of the ninth lever cylinder, the second pressing claw is fork-shaped, and elastic blocks arranged vertically downward are installed at the bottom of the two suspended ends of the second pressing claw.

[0017] Preferably, the elastic lifting mechanism includes a sliding sleeve, a support plate, a positioning column and a spring. The sliding sleeve can be slidably installed inside the seventh fixture. The sliding sleeve is vertically arranged. The sliding sleeve, the support plate and the positioning column are coaxial and connected in sequence from bottom to top. The diameters of the sliding sleeve and the positioning column are smaller than the diameter of the support plate. The spring is coaxially installed inside the sliding sleeve, and both ends of the spring are respectively abutted against the support plate and the fixture displacement platform.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The workroom assembly is used to isolate the welding equipment assembly from the outside world. The workroom assembly provides protection for the welding equipment assembly and also for the workers working outside the workroom assembly. The welding equipment assembly is a device that automatically performs laser welding through a robot. The fixture displacement platform is used to carry multiple fixtures. The fixture displacement platform drives the fixtures to change their positions, so that the fixtures on both sides of the symmetry plane alternately enter or leave the working area of ​​the welding equipment assembly. There are four fixtures in total, namely the first fixture, the second fixture, and the second fixture. The number of the tooling fixture, the third tooling fixture and the fourth tooling fixture may also be less or more. For example, when the first tooling fixture and the second tooling fixture enter the working range of the welding equipment assembly, the first tooling fixture and the second tooling fixture are located inside the workroom assembly, and the third tooling fixture and the fourth tooling fixture are located outside the workroom assembly. The welding equipment assembly performs automatic laser welding on the first tooling fixture and the second tooling fixture inside the workroom assembly, and the staff unloads and loads the third tooling fixture and the fourth tooling fixture outside the workroom assembly.

[0020] 1. The workstation can perform automatic laser welding on workpieces;

[0021] 2. While the workstation is welding, the staff can load and unload the workpieces on the fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of the present invention;

[0023] Figure 2 It is a stereogram of the welding equipment of the present invention;

[0024] Figure 3 A top view of the fixture displacement platform of the present invention;

[0025] Figure 4 The fixture of the present invention is transformed into a three-dimensional exploded view of a platform;

[0026] Figure 5 for Figure 4 A local enlarged view of point A;

[0027] Figure 6 The first fixture of the present invention is a three-dimensional Figure 1 ;

[0028] Figure 7 The first fixture of the present invention is separated from the workpiece. Figure 1 ;

[0029] Figure 8 for Figure 7 A partial enlarged view of point B;

[0030] Fig. 9 The first fixture of the present invention is a three-dimensional Figure 2 ;

[0031] Fig.10 The first fixture of the present invention is separated from the workpiece. Figure 2 .

[0032] Fig.11 for Fig.10 A partial enlarged view of point C;

[0033] Fig.12 It is a three-dimensional diagram of a second fixture of the present invention;

[0034] Fig.13 A three-dimensional diagram of the second fixture of the present invention in a state of being separated from a workpiece;

[0035] Fig.14 It is a three-dimensional diagram of a third fixture of the present invention;

[0036] Fig.15 A three-dimensional diagram of a third fixture and a workpiece in a separated state according to the present invention;

[0037] Fig.16 A top view of a fourth fixture of the present invention;

[0038] Fig.17 for Fig.16 DD direction cross-sectional view;

[0039] Fig.18 for Fig.17 A three-dimensional schematic diagram of

[0040] Fig.19 A three-dimensional diagram of a fourth fixture of the present invention in a state where the fixture is separated from a workpiece;

[0041] The numbers in the figure are:

[0042] 1-workroom assembly; 1a-workstation protection room; 1b-rolling door; 1c-anti-laser radiation lifting door; 1d-exhaust fan; 1e-control panel;

[0043] 2-welding equipment assembly; 2a-laser equipment; 2b-laser water cooling system; 2c-welding robot; 2d-robot controller; 2e-high-definition visual tracker; 2f-welding laser head; 2g-power control system;

[0044] 3-fixture displacement platform; 3a-frame; 3b-precision indexing plate; 3c-turntable; 3d-slewing bearing; 3d1-roller seat; 3d2-first rotating shaft; 3d3-roller;

[0045] 4-first fixture; 4a-first jig; 4b-second jig; 4c-first linear drive; 4d-first pressing claw; 4e-second linear drive; 4f-first pressing rod; 4f1-opening; 4f2-spring; 4g-third clamping mechanism; 4g1-hinge; 4g2-handle; 4g3-second rotating shaft; 4g4-U-shaped card;

[0046] 5-second fixture; 5a-third fixture; 5b-fourth fixture; 5c-first lever cylinder; 5d-second lever cylinder; 5e-third lever cylinder; 5f-fourth lever cylinder;

[0047] 6-third fixture; 6a-fifth fixture; 6b-sixth fixture; 6c-fifth lever cylinder; 6d-sixth lever cylinder; 6e-seventh lever cylinder; 6f-eighth lever cylinder;

[0048] 7-the fourth fixture; 7a-the seventh fixture; 7b-the elastic clamping mechanism; 7b1-the ninth lever cylinder; 7b2-the second pressing claw; 7b3-the elastic block; 7c-the elastic lifting mechanism; 7c1-the sliding sleeve; 7c2-the support plate; 7c3-the positioning column; 7c4-the spring. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] A laser welding workstation, such as Figure 1 As shown, it includes a workroom assembly 1, a welding equipment assembly 2 and a fixture displacement platform 3. The welding equipment assembly 2 is installed inside the workroom assembly 1, and the fixture displacement platform 3 is embeddedly installed on the edge of the workroom assembly 1. A plurality of tooling fixtures are fixedly installed on the working part of the fixture displacement platform 3. The tooling fixtures are evenly distributed on both sides of a radial plane of the axis of the fixture displacement platform 3 as a symmetry plane. When working, half of the tooling fixtures are located in the working range of the welding equipment assembly 2.

[0052] The workroom assembly 1 is used to isolate the welding equipment assembly 2 from the outside world. The workroom assembly 1 provides protection for the welding equipment assembly 2 and also provides protection for the staff working outside the workroom assembly 1. The welding equipment assembly 2 is a device that automatically performs laser welding by a robot. The fixture displacement platform 3 is used to carry a plurality of fixtures. The fixture displacement platform 3 drives the fixtures to change their positions, so that the fixtures located on both sides of the symmetry plane alternately enter or leave the working area of ​​the welding equipment assembly 2. There are four fixtures in total, namely the first fixture 4, the second fixture 5. The third fixture 6 and the fourth fixture 7 may be less or more. For example, when the first fixture 4 and the second fixture 5 enter the working range of the welding equipment assembly 2, the first fixture 4 and the second fixture 5 are located inside the workroom assembly 1, and the third fixture 6 and the fourth fixture 7 are located outside the workroom assembly 1. The welding equipment assembly 2 performs automatic laser welding on the first fixture 4 and the second fixture 5 inside the workroom assembly 1, and the staff unloads and loads the third fixture 6 and the fourth fixture 7 outside the workroom assembly 1.

[0053] like Figure 1 As shown, the workroom assembly 1 includes a workstation protection room 1a, a first opening exposing the welding equipment assembly 2 is arranged on the side of the workstation protection room 1a, a second opening exposing the upper part of the working interval of the fixture displacement platform 3 is arranged on the side of the workstation protection room 1a, a rolling shutter door 1b for covering the first opening is installed on the workstation protection room 1a, a laser radiation proof lifting door 1c intersecting with the axis of the fixture displacement platform 3 and used to cover the second opening is installed on the workstation protection room 1a, an exhaust fan 1d located directly above the working interval of the welding equipment assembly 2 is installed on the top of the workstation protection room 1a, and a control panel 1e is also installed on the side of the workstation protection room 1a.

[0054] The workstation protection room 1a is used to isolate the welding equipment assembly 2, and the rolling shutter door 1b is used for workers to enter and exit when the welding equipment assembly 2 fails; the anti-laser radiation lifting door 1c is used to separate the working area of ​​the fixture displacement platform 3, so that the two parts of the fixture displacement platform 3 located inside and outside the working area of ​​the welding equipment assembly 2 cannot pass through the laser, thereby preventing the workers from being burned by the laser emitted by the welding equipment assembly 2 when loading and unloading outside the workroom assembly 1; the exhaust fan 1d is used to exhaust smoke and disperse gas; the control panel 1e is used for the staff to observe the welding progress of the welding equipment assembly 2 and operate the welding equipment assembly 2 and the fixture displacement platform 3.

[0055] like Figure 2As shown, the welding equipment assembly 2 includes a laser device 2a, a laser water cooling system 2b, a welding robot 2c, a robot controller 2d, a high-definition visual tracker 2e, a welding laser head 2f and a power control system 2g. The laser device 2a, the laser water cooling system 2b, the welding robot 2c, the robot controller 2d, and the high-definition visual tracker 2e are all electrically connected to the power control system 2g, the laser device 2a, the welding robot 2c, and the high-definition visual tracker 2e are all communicatively connected to the robot controller 2d, and the high-definition visual tracker 2e and the welding laser head 2f are both fixedly installed at the working end of the welding robot 2c.

[0056] The power control system 2g is used to provide 380 AC power to the laser equipment 2a, the laser water cooling system 2b, the welding robot 2c, the robot controller 2d, and the high-definition visual tracker 2e. The laser equipment 2a and the welding laser head 2f are IPG laser welding equipment, model YLS-400. The welding robot 2c, the robot controller 2d and the high-definition visual tracker 2e are FANUC robots, model FANUC20iA / 12. The model of the laser water cooling system 2b is DIC second tooling fixture 50ADH-LD2. The robot controller 2d is used to receive the high-definition image transmitted by the high-definition visual tracker 2e and send signals to control the operation of the laser equipment 2a and the welding robot 2c. The welding robot 2c is used to control the high-definition visual tracker 2e and the welding laser head 2f to align with the workpiece. The laser equipment 2a outputs laser through the welding laser head 2f. The laser water cooling system 2b is used to cool the laser equipment 2a, the welding laser head 2f and the laser transmission line.

[0057] like Figure 3 and 4 As shown, the fixture displacement platform 3 includes a frame 3a, a precision dividing plate 3b and a turntable 3c. The precision dividing plate 3b is fixedly installed inside the frame 3a, and the working end of the precision dividing plate 3b is vertically arranged upward. The turntable 3c is fixedly installed at the working end of the precision dividing plate 3b. A gap is directly left between the top edge of the frame 3a and the bottom of the turntable 3c, and a slewing bearing 3d is installed in the gap. The fixed part of the slewing bearing 3d is fixedly connected to the frame 3a, and the movable part of the slewing bearing 3d abuts against the bottom surface of the turntable 3c. The turntable 3c is fixedly connected to the tooling fixture.

[0058] The frame 3a is used to fix the precision dividing plate 3b and the slewing bearing 3d. The precision dividing plate 3b is used to drive the turntable 3c to rotate along the vertical rotation axis, so that the turntable 3c changes the relative positions of the first fixture 4, the second fixture 5, the third fixture 6 and the fourth fixture 7 and the welding equipment assembly 2. The slewing bearing 3d is used to support the edge of the turntable 3c to reduce the weight burden of the fixture on the turntable 3c.

[0059] like Figure 5As shown, the slewing support 3d includes a plurality of roller seats 3d1 uniformly distributed on the top of the frame 3a around the axis of the turntable 3c, the mounting holes of the roller seats 3d1 are horizontally arranged, the roller seats 3d1 are rotatably mounted with a first rotating shaft 3d2, the first rotating shaft 3d2 is sleeved with a roller 3d3, the first rotating shaft 3d2 is a 1 / 3 threaded bolt that passes through the mounting hole of the roller seat 3d1 and is fixedly connected to the roller seat 3d1 through a nut.

[0060] The first rotating shaft 3d2 passes through the mounting hole of the roller seat 3d1 and is connected to the thread of the nut through the thread at its end, so that the first rotating shaft 3d2 is fixedly mounted on the roller seat 3d1, and the light rod at the middle end of the first rotating shaft 3d2 serves as the rotating shaft of the roller 3d3, so that the roller 3d3 can be rotatably mounted on the first rotating shaft 3d2, and the roller 3d3 is used to support the bottom surface of the turntable 3c, so that the turntable 3c will not be deformed due to the weight of multiple tooling fixtures.

[0061] like Figures 6 to 10 As shown, the tooling fixture includes a first fixture 4a, a second fixture 4b, a first linear drive 4c and a second linear drive 4e fixedly mounted on the working part of the fixture displacement platform 3, the working ends of the first linear drive 4c and the second linear drive 4e are arranged vertically upward, the working end of the first linear drive 4c is fixedly mounted with a first pressure claw 4d with both ends suspended directly above the first fixture 4a, and the working end of the second linear drive 4e is fixedly mounted with a first pressure rod 4f spanning directly above the second fixture 4b.

[0062] The first jig 4a and the second jig 4b are both special jigs for mounting workpieces, which fit the outer shape of the workpiece and are provided with an avoidance opening for avoiding the protruding part of the workpiece, a truncated cone-shaped pin for inserting into the opening of the workpiece, and a T-shaped pin for pressing the upper surface of the workpiece. The first linear drive 4c and the second linear drive 4e are both single-axis single-rod cylinders equipped with a guide mechanism. The first linear drive 4c and the second linear drive 4e are respectively used to drive the first pressure claw 4d and the first pressure rod 4f to descend so as to press the workpieces mounted on the first jig 4a and the second jig 4b.

[0063] like Figure 7 and 8 As shown, an opening 4f1 for avoiding the first protrusion of the workpiece is provided at one side of the bottom end of the first pressure rod 4f, and a plurality of spring leaves 4f2 suspended at the opening of the opening 4f1 are installed on the first pressure rod 4f, and the rebound direction of the opening 4f1 is set toward the opening 4f1.

[0064] The opening 4f1 and the spring leaf 4f2 are combined to form a groove into which the protruding portion of the workpiece can be inserted. Since the spring leaf 4f2 can be elastically deformed in a direction away from the opening 4f1, the width of the groove can be changed and the protruding portion of the workpiece can be firmly clamped in the middle.

[0065] like Fig.11 As shown, the first fixture 4 also includes a third clamping mechanism 4g, which includes a hinge 4g1 fixedly installed on the side of the second fixture 4b away from the first pressure rod 4f, the rotating shaft of the hinge 4g1 is horizontally arranged and parallel to the first pressure rod 4f, and the movable part of the hinge 4g1 is fixedly installed with a handle 4g2 and a second rotating shaft 4g3, the handle 4g2 extends perpendicular to the axis of the hinge 4g1 in the direction away from the hinge 4g1, the second rotating shaft 4g3 extends parallel to the axis of the hinge 4g1 toward both sides of the hinge 4g1, and a U-shaped card 4g4 with a middle end parallel to the second protrusion of the workpiece is rotatably installed on the second rotating shaft 4g3.

[0066] The hinge 4g1 and the handle 4g2 are combined into a rotatable handle, and the second rotating shaft 4g3 and the U-shaped clip 4g4 are combined into a rotatable U-shaped clip. When the staff drives the movable part of the hinge 4g1 to rotate through the handle 4g2, the movable part of the hinge 4g1 drives the second rotating shaft 4g3 and the U-shaped clip 4g4 to make a circular motion around the rotating shaft of the hinge 4g1. The U-shaped clip 4g4 is sleeved on the second raised portion of the workpiece and presses the second raised portion of the workpiece against the second fixture 4b as the hinge 4g1 moves. The second fixture 4b is provided with a protrusion that abuts against the other side of the second raised portion of the workpiece.

[0067] like Figures 12 to 13 As shown, the second fixture 5 includes a third fixture 5a, a fourth fixture 5b, a first lever cylinder 5c, a second lever cylinder 5d, a third lever cylinder 5e and a fourth lever cylinder 5f. The third fixture 5a and the fourth fixture 5b are special fixtures for installing workpieces. The special fixtures fit the outer shape of the workpiece and are provided with avoidance openings for avoiding the protruding parts of the workpiece, truncated cone pins for inserting into the openings of the workpiece, and T-shaped pins for pressing the upper surface of the workpiece. The first lever cylinder 5c, the second lever cylinder 5d, the third lever cylinder 5e and the fourth lever cylinder 5f are used to press the workpiece so that it cannot move.

[0068] like Figures 14 to 15 As shown, the third fixture 6 includes a fifth fixture 6a, a sixth fixture 6b, a fifth lever cylinder 6c, a sixth lever cylinder 6d, a seventh lever cylinder 6e and an eighth lever cylinder 6f. The structure of the third fixture 6 is basically the same as that of the second fixture 5. The difference is that the shapes of the workpieces installed in the second fixture 5 and the third fixture 6 are different, so the shapes of the fifth fixture 6a, the sixth fixture 6b and the third fixture 5a, the fourth fixture 5b are also different. The specific working principles are the same and will not be repeated here.

[0069] like Figures 16 to 19As shown, the fourth fixture 7 includes a seventh fixture 7a, an elastic pressing mechanism 7b and an elastic lifting mechanism 7c, the elastic pressing mechanism 7b is located on both sides of the seventh fixture 7a, the working end of the elastic pressing mechanism 7b is located directly above the working surface of the seventh fixture 7a, the elastic lifting mechanism 7c is installed inside the seventh fixture 7a, the seventh fixture 7a is provided with a through hole exposing the working end of the elastic lifting mechanism 7c, the elastic pressing mechanism 7b includes a ninth lever cylinder 7b1 and a second pressing claw 7b2 installed at the working end of the ninth lever cylinder 7b1, the second pressing claw 7b2 is fork-shaped, and elastic blocks 7b3 arranged vertically downward are installed at the bottom of the two suspended ends of the second pressing claw 7b2.

[0070] The seventh fixture 7a is a special fixture for installing the workpiece. The special fixture fits the outer shape of the workpiece and is provided with an avoidance opening for avoiding the protruding part of the workpiece, a truncated cone-shaped pin for inserting into the opening of the workpiece, and a T-shaped pin for pressing the upper surface of the workpiece. The elastic clamping mechanism 7b is used to press a part of the workpiece downward, and the elastic lifting mechanism 7c is used to lift a part of the workpiece upward. The seventh fixture 7a, the elastic clamping mechanism 7b and the elastic lifting mechanism 7c can be used to fix workpieces with large assembly tolerances. The workpiece is flexibly combined by elastic forces applied from top to bottom, rather than rigidly combined, which can effectively avoid the situation where the workpiece is damaged by rigidly combining the workpiece through the lever cylinder when the assembly tolerance of the workpiece is large;

[0071] The ninth lever cylinder 7b1 is used to drive the second pressing claw 7b2 to move toward the workpiece. The fork-shaped structure of the second pressing claw 7b2 enables it to press two points of the workpiece at the same time, thereby pressing the workpiece more stably or pressing two workpieces at the same time. The elastic block 7b3 provides a buffering function.

[0072] The elastic lifting mechanism 7c includes a sleeve 7c1, a support plate 7c2, a positioning column 7c3 and a spring 7c4. The sleeve 7c1 can be slidably installed inside the seventh fixture 7a. The sleeve 7c1 is vertically arranged. The sleeve 7c1, the support plate 7c2 and the positioning column 7c3 are coaxial and connected in sequence from bottom to top. The diameters of the sleeve 7c1 and the positioning column 7c3 are both smaller than the diameter of the support plate 7c2. The spring 7c4 is coaxially installed inside the sleeve 7c1, and the two ends of the spring 7c4 are respectively abutted against the support plate 7c2 and the fixture displacement platform 3.

[0073] The spring 7c4 is used to provide a rebound force to move the sleeve 7c1 upward, the support plate 7c2 is used to lift the workpiece, and the positioning column 7c3 is used to position the central opening of the workpiece. The sleeve 7c1, the support plate 7c2 and the positioning column 7c3 are an integrated part, which positions the workpiece and lifts the workpiece upward through the rebound force of the spring 7c4, so that the workpieces can be flexibly combined through elastic force.

[0074] Working principle of the present invention:

[0075] The power control system 2g is used to provide power to the laser device 2a, the laser water cooling system 2b, the welding robot 2c, the robot controller 2d, and the high-definition visual tracker 2e. The robot controller 2d is used to receive the high-definition image transmitted by the high-definition visual tracker 2e and send signals to control the operation of the laser device 2a and the welding robot 2c. The welding robot 2c is used to control the high-definition visual tracker 2e and the welding laser head 2f to align the workpiece. The laser device 2a outputs laser through the welding laser head 2f. The laser water cooling system 2b is used to cool the laser device 2a, the welding laser head 2f and the laser transmission line. The laser device 2a, the laser water cooling system 2b, the welding robot 2c, the robot controller 2d, the high-definition visual tracker 2e and the power control system 2g are combined into a welding device assembly 2 to perform laser welding on the workpiece fixed on the fixture by laser.

[0076] The frame 3a is used to fix the precision indexing plate 3b and the slewing bearing 3d. The precision indexing plate 3b is used to drive the turntable 3c to rotate along the vertical rotation axis, so that the turntable 3c changes the relative position of the fixture and the welding equipment assembly 2. The slewing bearing 3d is used to support the edge of the turntable 3c to reduce the weight burden of the fixture on the turntable 3c.

[0077] The workroom assembly 1 is used to isolate the welding equipment assembly 2 from the outside world. The workroom assembly 1 provides protection for the welding equipment assembly 2 and also provides protection for the staff working outside the workroom assembly 1. The welding equipment assembly 2 is a device that automatically performs laser welding by a robot. The fixture displacement platform 3 is used to carry a plurality of fixtures. The fixture displacement platform 3 drives the fixtures to change their positions, so that the fixtures located on both sides of the symmetry plane alternately enter or leave the working area of ​​the welding equipment assembly 2. There are four fixtures in total, namely the first fixture 4, the second fixture 5. The third fixture 6 and the fourth fixture 7 may be less or more. For example, when the first fixture 4 and the second fixture 5 enter the working area of ​​the welding equipment assembly 2, the first fixture 4 and the second fixture 5 are located inside the workroom assembly 1, and the third fixture 6 and the fourth fixture 7 are located outside the workroom assembly 1. The welding equipment assembly 2 performs automatic laser welding on the first fixture 4 and the second fixture 5 inside the workroom assembly 1, and the staff unloads and loads the third fixture 6 and the fourth fixture 7 outside the workroom assembly 1;

[0078] The workstation protection room 1a is used to isolate the welding equipment assembly 2, and the rolling shutter door 1b is used for workers to enter and exit when the welding equipment assembly 2 fails; the anti-laser radiation lifting door 1c is used to separate the working area of ​​the fixture displacement platform 3, so that the two parts of the fixture displacement platform 3 located inside and outside the working area of ​​the welding equipment assembly 2 cannot pass through the laser, thereby preventing the workers from being burned by the laser emitted by the welding equipment assembly 2 when loading and unloading outside the workroom assembly 1; the exhaust fan 1d is used to exhaust smoke and disperse gas; the control panel 1e is used for the staff to observe the welding progress of the welding equipment assembly 2 and operate the welding equipment assembly 2 and the fixture displacement platform 3.

Claims

1. A laser welding workstation, characterized in that: The invention comprises a workroom assembly (1), a welding equipment assembly (2) and a fixture displacement platform (3), wherein the welding equipment assembly (2) is installed inside the workroom assembly (1), the fixture displacement platform (3) is embeddedly installed on the edge of the workroom assembly (1), and a plurality of fixtures are fixedly installed on the working part of the fixture displacement platform (3), and the fixtures are evenly distributed on both sides of a radial plane of the axis of the fixture displacement platform (3) as a symmetry plane. When working, half of the fixtures are located within the working range of the welding equipment assembly (2); The first fixture (4) comprises a first fixture (4a), a second fixture (4b), a first linear drive (4c) and a second linear drive (4e) fixedly mounted on a working portion of the fixture displacement platform (3); the working ends of the first linear drive (4c) and the second linear drive (4e) are arranged vertically upward; the working end of the first linear drive (4c) is fixedly mounted with a first pressing claw (4d) with both ends suspended above the first fixture (4a); the working end of the second linear drive (4e) is fixedly mounted with a first pressing rod (4f) spanning above the second fixture (4b); An opening (4f1) for avoiding a first protruding portion of a workpiece is provided on one side of the bottom end of the first pressure rod (4f); a plurality of spring leaves (4f2) suspended at the opening (4f1) are mounted on the first pressure rod (4f); and the rebound direction of the spring leaves (4f2) is arranged toward the opening (4f1); The first fixture (4) also includes a third clamping mechanism (4g), which includes a hinge (4g1) fixedly mounted on a side of the second fixture (4b) away from the first pressure rod (4f), the rotating shaft of the hinge (4g1) being arranged horizontally and parallel to the first pressure rod (4f), the movable part of the hinge (4g1) being fixedly mounted with a handle (4g2) and a second rotating shaft (4g3), the handle (4g2) extending perpendicularly to the axis of the hinge (4g1) in a direction away from the hinge (4g1), the second rotating shaft (4g3) extending parallel to the axis of the hinge (4g1) towards both sides of the hinge (4g1), and a U-shaped card (4g4) having a middle end parallel to a second protruding portion of the workpiece being rotatably mounted on the second rotating shaft (4g3).

2. A laser welding workstation according to claim 1, characterized in that: The workroom assembly (1) comprises a workstation protection room (1a), a first opening exposing the welding equipment assembly (2) is arranged on the side of the workstation protection room (1a), a second opening exposing the upper part of the working area of ​​the fixture displacement platform (3) is arranged on the side of the workstation protection room (1a), a rolling door (1b) for covering the first opening is installed on the workstation protection room (1a), a laser radiation protection lifting door (1c) intersecting the axis of the fixture displacement platform (3) and used to cover the second opening is installed on the workstation protection room (1a), an exhaust fan (1d) located directly above the working area of ​​the welding equipment assembly (2) is installed on the top of the workstation protection room (1a), and a control panel (1e) is also installed on the side of the workstation protection room (1a).

3. A laser welding workstation according to claim 1, characterized in that: The welding equipment assembly (2) comprises a laser device (2a), a laser water cooling system (2b), a welding robot (2c), a robot controller (2d), a high-definition visual tracker (2e), a welding laser head (2f) and a power control system (2g). The laser device (2a), the laser water cooling system (2b), the welding robot (2c), the robot controller (2d) and the high-definition visual tracker (2e) are all electrically connected to the power control system (2g). The laser device (2a), the welding robot (2c) and the high-definition visual tracker (2e) are all communicatively connected to the robot controller (2d). The high-definition visual tracker (2e) and the welding laser head (2f) are all fixedly mounted on the working end of the welding robot (2c).

4. A laser welding workstation according to claim 1, characterized in that: The fixture displacement platform (3) comprises a frame (3a), a precision indexing plate (3b) and a turntable (3c); the precision indexing plate (3b) is fixedly mounted inside the frame (3a); the working end of the precision indexing plate (3b) is arranged vertically upward; the turntable (3c) is fixedly mounted on the working end of the precision indexing plate (3b); a gap is directly left between the top edge of the frame (3a) and the bottom of the turntable (3c); a slewing bearing (3d) is mounted in the gap; the fixed portion of the slewing bearing (3d) is fixedly connected to the frame (3a); the movable portion of the slewing bearing (3d) abuts against the bottom surface of the turntable (3c); and the turntable (3c) is fixedly connected to the fixture.

5. A laser welding workstation according to claim 4, characterized in that: The slewing bearing (3d) includes a plurality of roller seats (3d1) uniformly distributed on the top of the frame (3a) around the axis of the turntable (3c), the mounting holes of the roller seats (3d1) being arranged horizontally, a first rotating shaft (3d2) being rotatably mounted on the roller seat (3d1), a roller (3d3) being sleeved on the first rotating shaft (3d2), and the first rotating shaft (3d2) being a 1 / 3 threaded bolt passing through the mounting hole of the roller seat (3d1) and fixedly connected to the roller seat (3d1) via a nut.

6. A laser welding workstation according to claim 1, characterized in that: The fourth fixture (7) comprises a seventh fixture (7a), an elastic clamping mechanism (7b) and an elastic lifting mechanism (7c), wherein the elastic clamping mechanism (7b) is located on both sides of the seventh fixture (7a), the working end of the elastic clamping mechanism (7b) is located directly above the working surface of the seventh fixture (7a), the elastic lifting mechanism (7c) is installed inside the seventh fixture (7a), the seventh fixture (7a) is provided with a through hole for exposing the working end of the elastic lifting mechanism (7c), the elastic clamping mechanism (7b) comprises a ninth lever cylinder (7b1) and a second clamping claw (7b2) installed at the working end of the ninth lever cylinder (7b1), the second clamping claw (7b2) is fork-shaped, and elastic blocks (7b3) arranged vertically downward are installed at the bottom of the two suspended ends of the second clamping claw (7b2).

7. A laser welding workstation according to claim 6, characterized in that: The elastic lifting mechanism (7c) comprises a sliding sleeve (7c1), a supporting plate (7c2), a positioning column (7c3) and a spring (7c4); the sliding sleeve (7c1) is slidably mounted inside the seventh fixture (7a); the sliding sleeve (7c1) is vertically arranged; the sliding sleeve (7c1), the supporting plate (7c2) and the positioning column (7c3) are coaxial and sequentially connected from bottom to top; the diameters of the sliding sleeve (7c1) and the positioning column (7c3) are both smaller than the diameter of the supporting plate (7c2); the spring (7c4) is coaxially mounted inside the sliding sleeve (7c1); and two ends of the spring (7c4) are respectively abutted against the supporting plate (7c2) and the fixture displacement platform (3).

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