A synchronous laser welding apparatus

Abstract

This invention relates to the field of laser welding, and more particularly to a synchronous laser welding device. The invention provides a synchronous laser welding device to improve the welding quality of plastic products. The synchronous laser welding device includes a cabinet, a power distribution box, a support frame, a mounting frame, a table, an optical axis I, a lifting frame, a cylinder II, an auxiliary lifting assembly, a lower module, an upper module, a laser generating assembly, and a positioning assembly. The power distribution box is located on the right side of the cabinet. The support frame is installed at the lower part of the cabinet. The mounting frame is welded to the front of the support frame. The table is bolted to the upper side of the mounting frame. Optical axes I are symmetrically arranged on both sides of the upper side of the table. This invention, through synchronous laser welding, results in faster workpiece welding speed, better quality, and stronger consistency. The auxiliary lifting assembly assists cylinder II in mold closing, reducing the load on cylinder II, better protecting cylinder II, and extending its service life.

Description

Technical Field

[0001] This invention relates to the field of laser welding, and more particularly to a synchronous laser welding device. Background Technology

[0002] Laser welding is a highly efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Currently, there are three main types of laser welding technology for plastics: 3D galvanometer dynamic laser welding, robotic arm contour scanning welding, and synchronous laser welding. Compared with the other two methods, synchronous welding has the fastest welding speed, the highest consistency, and the best welding quality. Furthermore, synchronous laser welding can adapt to products of different shapes. Therefore, synchronous laser welding technology is receiving increasing attention in the field of plastic welding.

[0003] Currently, most welding of plastic products uses robotic arm contour scanning welding. The laser welding head is mounted on the robot arm, and the robotic arm moves the laser welding head according to the set contour to weld the headlights. This welding method is not fast, and the robotic arm is difficult to control during the welding process. The robotic arm shakes a lot during the welding process, which reduces the welding success rate. In addition, because the robotic arm needs to complete the entire welding trajectory to complete the welding, the welding consistency is poor. Summary of the Invention

[0004] To overcome the above-mentioned shortcomings, the technical problem to be solved is to provide a synchronous laser welding device to improve the welding quality of plastic products.

[0005] The technical solution of the present invention is as follows: a synchronous laser welding device, comprising a cabinet, a power distribution box, a support frame, a mounting frame, a table, optical axes I, a lifting frame, and cylinders II. The power distribution box is located on the right side of the cabinet. The support frame is installed at the bottom inside the cabinet. The mounting frame is fixedly connected to the support frame. The table is fixedly connected to the upper side of the mounting frame. Optical axes I are symmetrically arranged on the upper side of the table. The lifting frame is slidably connected between the optical axes I via linear bearings. Cylinders II are connected to the table below the lifting frame via an adapter plate. The telescopic end of cylinders II is connected to the lifting frame via a floating joint. The device also includes an auxiliary lifting component, a lower module, an upper module, a laser generating component, and a positioning component. The auxiliary lifting component is connected between the lifting frame, the table, and the mounting frame. The auxiliary lifting component is used to reduce the load on cylinders II. A detachable lower module is provided on the lifting frame. The upper module is provided on the upper side of the mounting frame. The laser generating component is provided on the top rear side of the support frame. A positioning component for positioning the lower module is installed inside the lifting frame.

[0006] As a preferred embodiment of the present invention, the cabinet includes a cabinet body I, a rear door, a lifting door, and a cylinder I. The front side of the cabinet body I has an opening for loading and unloading materials in the middle. The rear door is symmetrically and rotatably mounted on the rear side of the cabinet body I. The lifting door is slidably mounted on the opening in the middle of the front side of the cabinet body I via a track. The cylinder I is symmetrically mounted on the cabinet body I below the lifting door. The telescopic end of the cylinder I is connected to the lifting door via a transition block, so the cylinder I can drive the lifting door to move up and down to close and open the opening on the cabinet body I.

[0007] As a preferred embodiment of the present invention, the lifting frame includes a lower cover plate, an edge plate, a partition plate, and an upper cover plate. The lower cover plate is slidably connected to the optical axis I via a linear bearing. An edge plate is fixedly mounted vertically at the upper edge of the upper side of the lower cover plate. Partition plates are symmetrically arranged on the upper side of the lower cover plate. An upper cover plate is fixedly connected between the partition plate and the upper side of the edge plate. After the telescopic end of the cylinder II passes through the lower cover plate, it is connected to the lower side of the upper cover plate via a floating joint.

[0008] As a preferred embodiment of the present invention, the auxiliary lifting assembly includes a motor, a rotating shaft, gear I, a rack, and a pulley assembly. The motor is fixedly connected to the mounting frame by bolts. The rotating shaft is rotatably mounted on the lower side of the platform via a bearing seat. Gear I is keyed to both the left and right sides of the rotating shaft. A rack is symmetrically fixed to the bottom of the upper cover plate by bolts. The rack passes through the lower cover plate and the platform, and meshes with gear I. A pulley assembly for transmission is connected between the output shaft of the motor and the rotating shaft.

[0009] As a preferred embodiment of the present invention, the lower mold assembly includes a lower mold base, a handle, and a lower mold body. The lower mold base is placed on the upper cover plate, the positioning component positions the lower mold base, the handle is fixed to the left and right sides of the upper side of the lower mold base by bolts, and the lower mold body is fixed to the lower mold base by pins and bolts.

[0010] As a preferred embodiment of the present invention, the upper module includes a connecting plate, an optical axis II, an upper mold base, an upper mold body, and a servo electric cylinder. The connecting plate is fixed to the upper side of the mounting bracket by bolts. The optical axis II is slidably connected to the connecting plate by a linear bearing. The upper mold base is connected between the bottom ends of the optical axis II. The upper mold body is fixed to the bottom of the upper mold base by bolts and pins. The servo electric cylinder is connected to the top of the connecting plate by an adapter plate. The output shaft of the servo electric cylinder is connected to the upper mold base.

[0011] As a preferred embodiment of the present invention, the laser generating assembly includes a support column, a mounting frame, a mounting plate, a laser generator, a sleeve, an optical fiber, and a miniature laser head. The support column is symmetrically mounted on the upper side of the mounting frame. At least two mounting frames are provided on the rear side of each support column. The mounting frames at the same height are all fixed to the mounting plate by bolts. The laser generator is placed on the upper side of the mounting plate. There are at least 20 laser generators, with reserved space to expand to 45. Each laser generator has an effective power of 250W. Each laser generator has an optical fiber installed through a channel. Each channel can accommodate 1-15 optical fibers. Each optical fiber has an effective power ≥5W. The total output power of the device is between 2000W and 5000W. The outer side of the optical fiber channel is wrapped with a sleeve. The upper mold base and the upper mold body have communicating mounting holes. The mounting holes are combined to form the welding trajectory of the object. A miniature laser head is installed in each mounting hole. The optical fiber is connected to the miniature laser head.

[0012] As a preferred embodiment of the present invention, the positioning assembly includes a mounting base, a positioning pin, a rotating rod, a gear II, and a insert rod. The mounting base is symmetrically fixed to the bottom of the upper cover plate by bolts. A positioning pin that slides up and down is provided inside the mounting base. The positioning pin passes through the upper cover plate. A pin hole is opened on the lower mold base above the positioning pin. When the positioning pin is inserted into the pin hole, the position of the lower mold base is the optimal welding position. A toothed groove is opened on the side of the positioning pin. A gear II that meshes with the toothed groove is rotatably arranged inside the mounting base. A rotating rod is connected to the middle key of the gear II. The rotating rod is rotatably connected to the edge plate. An insert rod is provided on the edge plate at the rotating rod. The insert rod is inserted into the rotating rod to fix the rotating rod.

[0013] As a preferred embodiment of the present invention, it further includes a positioning component, which is installed on the left and right sides of the upper cover plate. The positioning component includes a positioning wheel and a pin. At least two positioning holes are symmetrically opened on the left and right sides of the upper cover plate. The positioning wheel is placed on the left and right sides of the upper cover plate. Pins are symmetrically arranged on the positioning wheel and inserted into the positioning holes.

[0014] As a preferred embodiment of the present invention, it further includes a limiting plate, a heat sink, and ball bearings. The limiting plate is installed on the side of the placement plate and is used to limit the position of the laser generator. The heat sink is symmetrically installed on the rear cabinet door and is used to assist the laser generator in heat dissipation. The upper cover plate has symmetrically opened slotted holes on the left and right sides, and the front edge plate has symmetrically opened grooves on the left and right sides. The slotted holes and grooves are on the same plane in the vertical direction. Ball bearings are symmetrically arranged on the side of the lower cover plate and pass through the upper cover plate.

[0015] The beneficial effects of this invention are: 1. This invention uses synchronous laser welding, which results in faster workpiece welding speed, better quality, and stronger consistency;

[0016] 2. The present invention uses an auxiliary lifting component to assist cylinder II in mold closing, reduce the load on cylinder II, better protect cylinder II, and improve the service life of cylinder II.

[0017] 3. The present invention can accommodate more than 20 laser generators through the laser generating component, which can meet the requirements of workpieces of different sizes, and the equipment can be used more widely.

[0018] 4. The present invention, through the positioning component and the clamping component, can better position the tooling, making the equipment more accurate during welding. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the cabinet of the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the distribution box of the present invention.

[0023] Figure 5 This is a three-dimensional structural diagram of the internal structure of the present invention.

[0024] Figure 6 This is a three-dimensional structural diagram of the component of the present invention mounted on the mounting bracket.

[0025] Figure 7 This is a three-dimensional structural diagram of the lifting frame of the present invention.

[0026] Figure 8 This is a three-dimensional structural diagram of the lifting frame and lower module of the present invention.

[0027] Figure 9 This is a three-dimensional structural diagram of the auxiliary lifting component of the present invention.

[0028] Figure 10 This is a three-dimensional structural schematic diagram of the auxiliary lifting component of the present invention from another perspective.

[0029] Figure 11 This is a three-dimensional structural diagram of the module of the present invention.

[0030] Figure 12 This is a three-dimensional structural diagram of the laser generating component of the present invention.

[0031] Figure 13 This is an enlarged schematic diagram of the laser generating component of the present invention.

[0032] Figure 14 This is a three-dimensional structural diagram of the card slot component and the positioning component of the present invention.

[0033] Figure 15 For the present invention Figure 14 A schematic diagram of the three-dimensional structure of A.

[0034] Figure 16 For the present invention Figure 14 A schematic diagram of the three-dimensional structure of B.

[0035] Reference numerals: 1: Cabinet, 101: Cabinet I, 102: Rear Cabinet Door, 103: Lifting Door, 104: Cylinder I, 2: Distribution Box, 201: Cabinet II, 202: Electrical Board, 203: Tri-color Light, 3: Support Frame, 4: Mounting Frame, 5: Tabletop, 6: Optical Axis I, 7: Lifting Frame, 71: Lower Cover Plate, 72: Edge Plate, 73: Partition, 74: Upper Cover Plate, 8: Cylinder II, 9: Auxiliary Lifting Components, 91: Motor, 92: Rotating Shaft, 93: Gear I, 94: Rack, 95: Pulley Assembly, 10: Lower Module, 1001: Lower Module Base, 1002: Handle, 1003: Lower Module Body, 11: Upper Module, 1 11: Connecting plate; 112: Optical axis II; 113: Upper mold base; 114: Upper mold body; 115: Servo electric cylinder; 12: Laser generator assembly; 121: Support column; 122: Placement frame; 123: Placement plate; 124: Laser generator; 125: Sleeve; 126: Fiber optic cable; 127: Miniature laser head; 13: Positioning assembly; 131: Mounting base; 132: Positioning pin; 133: Rotating rod; 134: Gear II; 135: Insert rod; 14: Locking assembly; 141: Positioning wheel; 142: Insert pin; 143: Positioning hole; 15: Limiting plate; 16: Heat sink; 17: Slotted hole; 18: Groove; 19: Ball bearing. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0037] A synchronous laser welding device, such as Figures 1-15As shown, the system includes a cabinet 1, a power distribution box 2, a support frame 3, a mounting frame 4, a platform 5, an optical axis I 6, a lifting frame 7, a cylinder II 8, an auxiliary lifting assembly 9, a lower module 10, an upper module 11, a laser generating assembly 12, and a positioning assembly 13. The power distribution box 2 is located on the right side of the cabinet 1, and its left side contacts the right side of the cabinet 1. The support frame 3 is installed inside the lower part of the cabinet 1. A mounting frame 4 for support is welded to the front of the support frame 3. The platform 5 is bolted to the upper side of the mounting frame 4. The platform 5 is made of 45# steel. Optical axes I 6 are symmetrically arranged on both the left and right sides of the upper side of the platform 5, and the optical axes I 6 are connected by a linear axis. A sliding connection lifting frame 7 is provided. A cylinder II 8 is connected to the platform 5 below the lifting frame 7 via an adapter plate. The telescopic end of the cylinder II 8 is connected to the lifting frame 7 via a floating joint. An auxiliary lifting assembly 9 is connected between the lifting frame 7, the platform 5, and the mounting frame 4. The auxiliary lifting assembly 9 is used to reduce the load on the cylinder II 8. A detachable lower module 10 is provided on the lifting frame 7. An upper module 11 is provided on the upper side of the mounting frame 4. The lower module 10 and the upper module 11 form the welding fixture of the equipment. A laser generating assembly 12 for welding is provided on the top rear side of the support frame 3. A positioning assembly 13 for positioning the lower module 10 is installed inside the lifting frame 7.

[0038] When using this device to weld plastic products, first replace the corresponding lower module 10 with the upper module 11. Position the lower module 10 using the positioning component 13, and connect the laser generating component 12 to the upper module 11. After the equipment is ready, place the workpiece to be welded on the lower module 10, then move to a safe distance, close the cabinet 1, press the double start button on the cabinet 1, and the equipment will start working. Cylinder II 8 will drive the lifting frame 7 upward, simultaneously moving the lower module 10 upward, while the upper module 11 will partially move downward. The mold closing process begins, and at the same time, the auxiliary lifting component 9 and the auxiliary cylinder II 8 drive the lifting frame 7 and the components on the lifting frame 7 to move upward, reducing the burden on the cylinder II 8. After the upper module 11 and the lower module 10 are closed, the laser generating component 12 is controlled to start working and begin welding the workpiece. After the workpiece is welded, the cylinder II 8 and the auxiliary lifting component 9 drive the lower module 10 to move downward and reset, while the upper module 11 moves upward and resets. The cabinet 1 is opened, and the welded workpiece is taken out. Then the above operation is repeated to weld the remaining workpieces.

[0039] like Figure 2As shown, the cabinet 1 includes a cabinet body I 101, a rear door 102, a lifting door 103, and a cylinder I 104. The front side of the cabinet body I 101 has an opening for loading and unloading materials. The rear door 102 is symmetrically mounted on the rear side of the cabinet body I 101 via hinges. The lifting door 103 is slidably mounted on the opening in the middle of the front side of the cabinet body I 101 via a track. The cylinder I 104 is symmetrically mounted on the cabinet body I 101 below the lifting door 103. The telescopic end of the cylinder I 104 is connected to the lifting door 103 via an adapter block, so the cylinder I 104 can drive the lifting door 103 to move up and down to close and open the opening on the cabinet body I 101.

[0040] When welding begins, the control cylinder I104 retracts, causing the lifting door 103 to move downwards, opening the previously closed cabinet I101 and placing the workpiece to be processed on the lower module 10. Then, the control cylinder I104 extends, causing the lifting door 103 to move upwards, closing the front of the cabinet I101, and the equipment begins welding the workpiece. At the same time, when it is necessary to inspect or repair the laser generating component 12 installed on the rear side, inspection and repair can be carried out by opening the rear cabinet door 102.

[0041] like Figure 3 As shown, the distribution box 2 includes a cabinet II 201, an electrical board 202, and a tri-color light 203. The cabinet II 201 is in close contact with the right side of the cabinet I 101. The electrical board 202 for installing electrical appliances is installed inside the cabinet II 201. The tri-color light 203 for alarm is installed above the cabinet II 201.

[0042] During equipment assembly, the required electrical appliances are installed on the electrical board 202 inside cabinet II 201 and connected to the electrical appliances on the equipment via wiring. The tri-color light 203 is installed above cabinet II 201, which can reduce wiring. At the same time, since cabinet II 201 is independent of cabinet I 101, it is convenient for subsequent mobile equipment.

[0043] like Figure 7 and Figure 8 As shown, the lifting frame 7 includes a lower cover plate 71, an edge plate 72, a partition plate 73, and an upper cover plate 74. The lower cover plate 71 is slidably connected to the optical axis I6 via a linear bearing. The edge plate 72 is bolted to the upper edge of the lower cover plate 71. The edge plate 72 and the lower cover plate 71 are combined to form a frame. The partition plate 73 is symmetrically arranged on the upper side of the lower cover plate 71 via bolts. The upper cover plate 74 is bolted between the partition plate 73 and the upper side of the edge plate 72. The telescopic end of the cylinder II8 passes through the lower cover plate 71 and is connected to the lower side of the upper cover plate 74 via a floating joint. The space formed by the lower cover plate 71, the edge plate 72, and the partition plate 73 is used to install the positioning component 13 and to allow the equipment to work better.

[0044] like Figure 9 and Figure 10 As shown, the auxiliary lifting assembly 9 includes a motor 91, a rotating shaft 92, a gear I 93, a rack 94, and a pulley set 95. The motor 91 is fixedly connected to the mounting bracket 4 by bolts. The motor 91 is a geared motor. The rotating shaft 92 is rotatably mounted on the lower side of the platform 5 through a bearing seat. The rotating shaft 92 is parallel to the platform 5. The left and right sides of the rotating shaft 92 are keyed to the gear I 93. The bottom of the upper cover plate 74 is symmetrically fixed to the rack 94 by bolts. The rack 94 passes through the lower cover plate 71 and the platform 5. The rack 94 meshes with the gear I 93. The output shaft of the motor 91 is connected to the rotating shaft 92 by a pulley set 95 for transmission.

[0045] When mold closing assistance is needed, control motor 91 rotates clockwise, which drives shaft 92 to rotate clockwise through pulley group 95, which in turn drives gear I 93 to rotate clockwise, thereby driving rack 94 to move upward and pushing lifting frame 7 to move upward, thus assisting cylinder II 8 in driving lifting frame 7 to move upward. After mold closing is completed, motor 91 stops working. When mold release is needed, control motor 91 to reverse, driving lifting frame 7 to move downward and reset, after which motor 91 stops working.

[0046] like Figure 8 As shown, the lower mold assembly 10 includes a lower mold base 1001, a handle 1002, and a lower mold body 1003. The lower mold base 1001 is placed on the upper cover plate 74. The positioning component 13 positions the lower mold base 1001. The handle 1002 is fixed to the left and right sides of the upper side of the lower mold base 1001 by bolts. The lower mold body 1003 is fixed to the lower mold base 1001 by pins and bolts.

[0047] Different lower mold bodies 1003 can be replaced depending on the workpiece. When it is necessary to disassemble the lower mold 10, unscrew the bolts that fix the lower mold 10, then lift the lower mold 10 down through the handle 1002, and place the new lower mold 10 above the upper cover plate 74. Position the new lower mold 10 through the positioning component 13, and then fix the lower mold 10 with bolts.

[0048] like Figure 11As shown, the upper module 11 includes a connecting plate 111, an optical axis II 112, an upper mold base 113, an upper mold body 114, and a servo cylinder 115. The connecting plate 111 is fixed to the upper side of the mounting bracket 4 by bolts. The optical axis II 112 is slidably connected to the connecting plate 111 by a linear bearing. The upper mold base 113 is connected between the bottom ends of the optical axis II 112. The upper mold body 114 is fixed to the bottom of the upper mold base 113 by bolts and pins. The servo cylinder 115 is connected to the top of the connecting plate 111 by an adapter plate. The output shaft of the servo cylinder 115 is connected to the upper mold base 113. The servo cylinder 115 has a built-in brake and a deceleration function to prevent impact on the equipment.

[0049] Different upper mold bodies 114 can be replaced depending on the workpiece. When it is necessary to disassemble the upper mold body 114, the upper mold base 113 is separated from the optical axis II 112 and the servo electric cylinder 115, and then the upper mold body 114 can be replaced. Example 2

[0050] Based on Example 1, such as Figure 12 and Figure 13 As shown, the laser generating assembly 12 includes a support column 121, a mounting frame 122, a mounting plate 123, a laser generator 124, a sleeve 125, an optical fiber 126, and a miniature laser head 127. The support column 121 is symmetrically mounted on the upper side of the mounting frame 4. Six mounting frames 122 are provided on the rear side of each support column 121. The mounting frames 122 at the same height are all fixed to the mounting plate 123 by bolts. The laser generator 124 is placed on the upper side of the mounting plate 123. There are at least 20 laser generators 124, and the space is reserved to expand to 45. Each laser generator... The light generator 124 has an effective power of 250W. Each laser generator 124 has an optical fiber 126 installed through a channel. Each channel can be expanded with 1-15 optical fibers 126. Each optical fiber 126 has an effective power of ≥5W. The total output power of the device is between 2000W and 5000W. The outer side of the optical fiber 126 channel is wrapped with a sleeve 125. The upper mold base 113 and the upper mold body 114 have communicating mounting holes. The mounting holes are combined to form the welding trajectory of the object. Each mounting hole is equipped with a miniature laser head 127. The optical fiber 126 is connected to the miniature laser head 127.

[0051] When laser welding is performed on the workpiece, the laser generator 124 is controlled to start working, and the energy is transmitted to the miniature laser head 127 through the optical fiber 126. The laser passes through the light projection layer of the workpiece and shines directly on the heat absorption layer to weld the workpiece. After the workpiece is welded, the laser generator 124 stops working.

[0052] like Figure 14 and Figure 15As shown, the positioning assembly 13 includes a mounting base 131, a positioning pin 132, a rotating rod 133, a gear II 134, and a insertion rod 135. The mounting base 131 is symmetrically fixed to the bottom of the upper cover plate 74 by bolts. The mounting base 131 is hollow inside. The positioning pin 132, which slides up and down, is provided inside the mounting base 131. The positioning pin 132 passes through the upper cover plate 74. A vertical pin hole is opened on the lower mold base 1001 above the positioning pin 132. When the positioning pin 132 is inserted into the pin hole, the position of the lower mold base 1001 is the optimal welding position. The positioning pin 132 has a toothed groove on its side. A gear II 134 that meshes with the toothed groove is rotatably arranged in the mounting base 131. A rotating rod 133 is connected to the middle key of the gear II 134. The rotating rod 133 is rotatably connected to the edge plate 72. An insert rod 135 is provided on the edge plate 72 at the rotating rod 133. The insert rod 135 is inserted into the rotating rod 133 to fix the rotating rod 133.

[0053] After the lower module 10 is placed on the upper cover plate 74 and its position is adjusted, the rotating rod 133 is released by inserting the rod 135. Then, the rotating rod 133 is rotated 180° clockwise, which drives the gear II 134 to rotate 180° clockwise, thereby driving the positioning pin 132 to move upward and insert into the pin hole on the lower mold base 1001 to position the lower mold base 1001. Then, the rotating rod 133 is fixed again by inserting the rod 135.

[0054] like Figure 14 and Figure 16 As shown, it also includes a positioning component 14, which is installed on the left and right sides of the upper side of the upper cover plate 74. The positioning component 14 includes a positioning wheel 141 and a pin 142. Eight positioning holes 143 are symmetrically opened on the left and right sides of the upper side of the upper cover plate 74. The positioning wheel 141 is placed on the left and right sides of the upper side of the upper cover plate 74. The pin 142 is symmetrically arranged on the positioning wheel 141 and inserted into the positioning hole 143.

[0055] Because this equipment has four sets of tooling, and each set of tooling has different dimensions, in order to help better place the lower module 10, according to the width of the lower module 10, first pull up the positioning wheel 141, and then insert the pin 142 on the positioning wheel 141 into the corresponding positioning hole 143 to position the left and right sides of the lower module 10, so as to facilitate faster calibration of the position of the lower module 10.

[0056] like Figure 2 , Figure 8 , Figure 13 , Figure 14 and Figure 15As shown, it also includes a limiting plate 15, a heat sink 16, and ball bearings 19. The limiting plate 15 is installed on the upper side of the placement plate 123. The limiting plate 15 is used to restrict the position of the laser generator 124. After being restricted, the laser generator 124 can only slide backward. The heat sink 16 is symmetrically installed on the rear cabinet door 102. The heat sink 16 is used to assist the laser generator 124 in heat dissipation. The upper cover plate 74 has symmetrically opened forward-extending slotted holes 17 on the left and right sides. The front edge plate 72 has symmetrically opened vertically extending grooves 18 on the left and right sides. The slotted holes 17 and the grooves 18 are on the same plane in the vertical direction. The lower cover plate 71 has eight ball bearings 19 symmetrically arranged on the upper side of the left and right sides. The ball bearings 19 pass through the upper cover plate 74.

[0057] The limiting plate 15 can limit the position of the laser generator 124. Placing too many laser generators 124 can cause chaos. The heat sink 16 can help dissipate heat from the laser generator 124. At the same time, when the lower module 10 is too heavy, it can be loosened and removed by a forklift. The forklift forks are inserted into the lifting frame 7 through the groove 18, and then the forks move upward through the slot 17 to contact the lower module 10 and lift it for transport. The ball bearing 19 can assist in adjusting the position of the lower module 10 after it is placed on the upper cover plate 74. Adjusting the position of the lower module 10 is very effortless and will not damage the upper cover plate 74.

[0058] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A synchronous laser welding device, comprising a cabinet (1), a power distribution box (2), a support frame (3), a mounting frame (4), a table (5), an optical axis I (6), a lifting frame (7), and a cylinder II (8), wherein the power distribution box (2) is located on the right side of the cabinet (1), the support frame (3) is installed inside the lower part of the cabinet (1), the mounting frame (4) is fixedly connected to the support frame (3), the table (5) is fixedly connected to the upper side of the mounting frame (4), the optical axis I (6) is symmetrically arranged on the upper side of the table (5), the lifting frame (7) is slidably connected between the optical axes I (6) through linear bearings, and the cylinder II (8) is connected to the table (5) below the lifting frame (7) through an adapter plate, the telescopic end of the cylinder II (8) is connected to the lifting frame (7) through a floating joint, characterized in that, It also includes an auxiliary lifting assembly (9), a lower module (10), an upper module (11), a laser generating assembly (12), and a positioning assembly (13). The auxiliary lifting assembly (9) is connected between the lifting frame (7), the platform (5), and the mounting frame (4). The auxiliary lifting assembly (9) is used to reduce the burden on cylinder II (8). The lifting frame (7) is provided with a detachable lower module (10). The upper side of the mounting frame (4) is provided with an upper module (11). The laser generating assembly (12) is provided on the top rear side of the support frame (3). The positioning assembly (13) for positioning the lower module (10) is installed inside the lifting frame (7). The lifting frame (7) includes a lower cover plate (71), an edge plate (72), a partition plate (73) and an upper cover plate (74). The lower cover plate (71) is slidably connected to the optical axis I (6) through a linear bearing. An edge plate (72) is fixedly connected to the upper side edge of the lower cover plate (71). A partition plate (73) is symmetrically arranged on the upper side of the lower cover plate (71). An upper cover plate (74) is fixedly connected between the partition plate (73) and the upper side of the edge plate (72). After the telescopic end of the cylinder II (8) passes through the lower cover plate (71), it is connected to the lower side of the upper cover plate (74) through a floating joint. The lower module (10) includes a lower mold base (1001), a handle (1002) and a lower mold body (1003). The lower mold base (1001) is placed on the upper cover plate (74). The positioning component (13) positions the lower mold base (1001). The handle (1002) is fixed to the left and right sides of the upper side of the lower mold base (1001) by bolts. The lower mold body (1003) is fixed to the lower mold base (1001) by pins and bolts. The positioning assembly (13) includes a mounting base (131), a positioning pin (132), a rotating rod (133), a gear II (134), and a insertion rod (135). The mounting base (131) is symmetrically fixed to the bottom of the upper cover plate (74) by bolts. The mounting base (131) is provided with a positioning pin (132) that slides up and down. The positioning pin (132) passes through the upper cover plate (74). A pin hole is opened on the lower mold base (1001) above the positioning pin (132). The positioning pin (132) is inserted into the lower mold base (1001). When the pin hole is reached, the position of the lower mold base (1001) is the optimal welding position. The positioning pin (132) has a toothed groove on its side. The mounting base (131) is rotatably equipped with a gear II (134) that meshes with the toothed groove. The gear II (134) is connected to a rotating rod (133) by a key in the middle. The rotating rod (133) is rotatably connected to the edge plate (72). The edge plate (72) at the rotating rod (133) is provided with a plug (135). The plug (135) is inserted into the rotating rod (133) to fix the rotating rod (133). It also includes a positioning component (14), which is installed on the left and right sides of the upper side of the upper cover plate (74). The positioning component (14) includes a positioning wheel (141) and a pin (142). At least two positioning holes (143) are symmetrically opened on the left and right sides of the upper side of the upper cover plate (74). The positioning wheel (141) is placed on the left and right sides of the upper side of the upper cover plate (74). The pin (142) is symmetrically arranged on the positioning wheel (141) and inserted into the positioning hole (143). It also includes a limiting plate (15), a heat sink (16) and ball bearings (19). The limiting plate (15) is installed on the upper side of the placement plate (123). The limiting plate (15) is used to limit the position of the laser generator (124). The heat sink (16) is symmetrically installed on the rear cabinet door (102). The heat sink (16) is used to assist the laser generator (124) in heat dissipation. A straight hole (17) is symmetrically opened on the upper cover plate (74). A groove (18) is symmetrically opened on the front edge plate (72). The straight hole (17) and the groove (18) are on the same plane in the vertical direction. Ball bearings (19) are symmetrically arranged on the upper side of the lower cover plate (71). The ball bearings (19) pass through the upper cover plate (74).

2. A synchronous laser welding device according to claim 1, characterized in that, The cabinet (1) includes a cabinet body I (101), a rear cabinet door (102), a lifting door (103), and a cylinder I (104). The front side of the cabinet body I (101) has an opening for loading and unloading materials. The rear cabinet door (102) is symmetrically rotated on the rear side of the cabinet body I (101). The lifting door (103) is slidably mounted on the opening in the middle of the front side of the cabinet body I (101) via a track. The cylinder I (104) is symmetrically mounted on the cabinet body I (101) below the lifting door (103). The telescopic end of the cylinder I (104) is connected to the lifting door (103) via a transition block. Therefore, the cylinder I (104) can drive the lifting door (103) to move up and down to close and open the opening on the cabinet body I (101).

3. A synchronous laser welding device according to claim 2, characterized in that, The auxiliary lifting assembly (9) includes a motor (91), a rotating shaft (92), gear I (93), a rack (94), and a pulley assembly (95). The motor (91) is fixedly connected to the mounting bracket (4) by bolts. The rotating shaft (92) is rotatably mounted on the lower side of the platform (5) through a bearing seat. Gear I (93) is keyed to both the left and right sides of the rotating shaft (92). The rack (94) is symmetrically fixed to the bottom of the upper cover plate (74) by bolts. The rack (94) passes through the lower cover plate (71) and the platform (5). The rack (94) meshes with gear I (93). A pulley assembly (95) for transmission is connected between the output shaft of the motor (91) and the rotating shaft (92).

4. A synchronous laser welding device according to claim 3, characterized in that, The upper module (11) includes a connecting plate (111), an optical axis II (112), an upper mold base (113), an upper mold body (114), and a servo electric cylinder (115). The connecting plate (111) is fixed to the upper side of the mounting bracket (4) by bolts. The optical axis II (112) is slidably connected to the connecting plate (111) by a linear bearing. The upper mold base (113) is connected between the bottom ends of the optical axis II (112). The upper mold body (114) is fixed to the bottom of the upper mold base (113) by bolts and pins. The servo electric cylinder (115) is connected to the top of the connecting plate (111) by an adapter plate. The output shaft of the servo electric cylinder (115) is connected to the upper mold base (113).

5. A synchronous laser welding device according to claim 4, characterized in that, The laser generating assembly (12) includes a support column (121), a mounting frame (122), a mounting plate (123), a laser generator (124), a sleeve (125), an optical fiber (126), and a miniature laser head (127). The support column (121) is symmetrically mounted on the upper side of the mounting frame (4). At least two mounting frames (122) are provided on the rear side of each support column (121). The mounting frames (122) at the same height are all fixed to the mounting plate (123) by bolts. The laser generator (124) is placed on the upper side of the mounting plate (123). There are at least 20 laser generators (124), and the reserved space can be expanded to 45. Each laser generator (124) has an effective power of 250W. Each laser generator (124) is equipped with an optical fiber (126) through a channel. Each channel can be expanded with 1-15 optical fibers (126). The effective power of each optical fiber (126) is ≥5W. The total output power of the device is between 2000W and 5000W. The outer side of the optical fiber (126) channel is wrapped with a sleeve (125). The upper mold base (113) and the upper mold body (114) have interconnected mounting holes. The mounting holes are combined to form the trajectory of the object welding. Each mounting hole is equipped with a miniature laser head (127). The optical fiber (126) is connected to the miniature laser head (127).

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