Automatic clamp for laser welding machine
By designing automated fixtures and using horizontal and vertical sliding parts and photoelectric sensors to control the laser welding system, the safety risks and low degree of automation during laser welding are solved, and safety and efficiency are improved.
Patent Information
- Application Number
- CN202422255547.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-13
AI Technical Summary
Laser radiation during laser welding causes damage to personnel, and existing fixtures have safety risks in loading and unloading operations.
An automated fixture including a base, bracket, workbench, slide rail, welding table, guide rod, sliding sleeve, press plate and transparent plate is designed. Through the cooperation of horizontal and vertical sliding parts, the workpiece is automatically loaded and unloaded, and combined with photoelectric sensors and controllers, the work of the laser welding system is automatically controlled.
It reduces the damage to personnel by laser radiation, improves the safety and automation of production and processing, expands the scope of application of fixtures, and improves welding accuracy and efficiency.
Smart Images
Figure CN223114370U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fixtures, in particular to an automatic fixture for a laser welding machine. Background Art
[0002] At present, laser welding of plastics is a welding method that uses high-energy laser pulses to locally heat materials in a small area. The energy of laser radiation diffuses into the interior of the materials through heat conduction, and the materials are melted to form a specific molten pool. When a laser welding machine is welding, it is necessary to clamp and fix the workpiece, and use a transparent layer to press against the surface of the workpiece. The combined action of the internal signal and the external signal generated by the thermal expansion of the material itself ensures the firm welding of the two parts.
[0003] In the related art, when loading and unloading a laser welding machine, it is necessary to manually place the workpiece under the laser welding head, and then operate the fixture to press and fix the workpiece. There is a certain risk under the laser welding head, and the laser radiation generated during laser welding will cause damage to personnel. Therefore, it needs to be improved. Summary of the Utility Model
[0004] In order to reduce the phenomenon of laser radiation causing damage to personnel and improve the safety of production and processing, the present application provides an automatic fixture for a laser welding machine.
[0005] The automatic fixture for a laser welding machine provided by the present application adopts the following technical solutions:
[0006] An automatic fixture for a laser welding machine includes a base, a bracket, a workbench, a slide rail, a welding table, a guide rod, a sliding sleeve, a pressing plate and a transparent plate. A plurality of brackets are symmetrically and fixedly arranged on the base. The workbench is horizontally arranged at the top of the bracket. The slide rail is fixedly arranged on the surface of the workbench. The welding table is slidably arranged on the slide rail. The welding table is used for placing the workpiece to be welded. A horizontal sliding member for driving the welding table to slide on the slide rail is arranged on the workbench. A plurality of guide rods are fixedly arranged on the base. The sliding sleeve is slidably arranged on the guide rod. The pressing plate is fixedly arranged between the sliding sleeves. The transparent plate is arranged on the pressing plate. A vertical sliding member for driving the sliding sleeve to slide on the guide rod is arranged on the base.
[0007] By adopting the above technical solution, when loading the workpiece to be welded, the welding table is located at one end of the base, while the pressing plate is located at the other end of the base. The worker places the workpiece on the welding table, and then the horizontal sliding member drives the welding table to slide along the length direction of the slide rail on the slide rail. The horizontal sliding member drives the welding table to slide directly below the pressing plate. Then the vertical sliding member works, and the vertical sliding member drives the sliding sleeve to slide along the vertical direction on the guide rod, driving the pressing plate to descend, so that the transparent plate on the pressing plate abuts against the workpiece on the welding table. Then the laser welding system above the pressing plate works to weld the workpiece. After welding, the vertical sliding member drives the pressing plate away from the welding table, and the horizontal sliding member then drives the welding table away from the pressing plate. Finally, the worker unloads the workpiece on the welding table. Since the loading and unloading are far from directly below the laser welding system, the phenomenon of laser radiation damaging personnel is reduced, and the safety of production and processing is improved.
[0008] Preferably, it further includes a controller, a first photoelectric sensor, and a second photoelectric sensor. The first photoelectric sensor is arranged on the workbench and is signal-connected to the controller. The second photoelectric sensor is arranged on the pressing plate and is signal-connected to the controller. Both the horizontal sliding member and the vertical sliding member are signal-connected to the controller. The controller is used to control the vertical sliding member to work when the first photoelectric sensor detects a signal value, and the controller is used to control the laser welding system to work when the second photoelectric sensor detects a signal value.
[0009] By adopting the above technical solution, after the workpiece is placed on the welding table, the horizontal sliding member drives the welding table to slide directly below the pressing plate. At this time, the first photoelectric sensor will receive the signal of the welding table. When the first photoelectric sensor detects a signal value, the controller automatically controls the vertical sliding member to work, so that the transparent plate on the pressing plate abuts against the workpiece on the welding table. And at this time, the second photoelectric sensor on the pressing plate will detect a signal, and the controller automatically controls the laser welding system to work, thereby improving the automation degree during the loading and unloading process and eliminating the need for frequent manual operation.
[0010] Preferably, the horizontal sliding member is a horizontal air cylinder. The bottom end of the horizontal air cylinder is fixed on the workbench, and the piston rod of the horizontal air cylinder is connected to the welding table.
[0011] By adopting the above technical solution, the piston rod of the horizontal air cylinder expands and contracts, driving the welding table to slide horizontally along the slide rail, which is convenient and fast to control.
[0012] Preferably, the vertical sliding member is a vertical air cylinder. The bottom end of the vertical air cylinder is fixed on the base, and the piston rod of the vertical air cylinder is connected to the pressing plate.
[0013] By adopting the above technical solution, the piston rod of the vertical air cylinder expands and contracts, driving the pressing plate to slide vertically between the guide rods, which is convenient and fast to control.
[0014] Preferably, the welding table includes a sliding table and a connecting table. The sliding table is slidably arranged on the slide rail. The connecting table is detachably connected to the sliding table. An accommodating groove for placing a workpiece is arranged on the connecting table. A connecting member is arranged between the connecting table and the sliding table, and the connecting member is used to fix the connecting table on the sliding table.
[0015] Preferably, the connecting member includes a plurality of connecting bolts, and the connecting bolts penetrate through the connecting table and are threadedly connected to the sliding table.
[0016] By adopting the above technical solution, the connecting table and the sliding table can be detachably connected by using the connecting bolts, and different connecting tables can be replaced. The shapes of the accommodating grooves on different connecting tables are different. Changing the connecting table is convenient for placing workpieces of different shapes, so as to process workpieces of different shapes and improve the application range of the fixture.
[0017] Preferably, grips are symmetrically arranged on the end walls of the connecting table.
[0018] By adopting the above technical solution, holding the grips is convenient for replacing and carrying the connecting table.
[0019] Preferably, a vision camera is arranged on the side wall of one of the sliding sleeves. The vision camera is connected to a processor, and the processor is connected to an alarm. The processor is used to analyze the flatness of the surface of the workpiece photographed by the vision camera and control the alarm to give an alarm when there are differences in flatness.
[0020] By adopting the above technical solution, after the workpiece is placed on the welding table, the vision camera takes a picture of the workpiece from the side of the welding table. The processor receives the picture taken by the vision camera and analyzes the flatness of the surface of the workpiece. When there are differences in flatness, the processor controls the alarm to give an alarm, which is beneficial to ensuring the flatness of the workpiece after loading and then improving the accuracy during laser welding.
[0021] In summary, the present application includes at least one of the following beneficial technical effects:
[0022] 1. By providing a base, a bracket, a workbench, a slide rail, a welding table, a guide rod, a sliding sleeve, a pressing plate, a transparent plate, a horizontal sliding member, and a vertical sliding member, when loading the workpiece to be welded, the operator places the workpiece on the welding table, and then the horizontal sliding member drives the welding table to slide along the length direction of the slide rail on the slide rail. The horizontal sliding member drives the welding table to slide to directly below the pressing plate, and then the vertical sliding member operates. The vertical sliding member drives the pressing plate to descend, so that the transparent plate on the pressing plate abuts against the workpiece on the welding table. Then the laser welding system directly above the pressing plate operates to weld the workpiece. After welding, the vertical sliding member and the horizontal sliding member reset. Since the loading and unloading are far away from directly below the laser welding system, the phenomenon of laser radiation causing damage to personnel is reduced, and the safety of production and processing is improved;
[0023] 2. By providing a controller, a first photoelectric sensor, and a second photoelectric sensor, after placing the workpiece on the welding table, the horizontal sliding member drives the welding table to slide to directly below the pressing plate. At this time, the first photoelectric sensor will receive the signal of the welding table. When the first photoelectric sensor detects the signal value, the controller automatically controls the vertical sliding member to operate, so that the transparent plate on the pressing plate abuts against the workpiece on the welding table. At this time, the second photoelectric sensor on the pressing plate will detect the signal, and the controller automatically controls the laser welding system to operate, thereby improving the automation degree during the loading and unloading work;
[0024] 3. By providing a sliding table, a connecting table, and a connecting bolt, the connecting table and the sliding table are detachably connected by the connecting bolt, and different connecting tables can be replaced. The shapes of the accommodating grooves on different connecting tables are different. Changing the connecting table facilitates placing workpieces of different shapes, so as to process workpieces of different shapes, and the applicable range of the fixture is improved. Description of the Drawings
[0025] Figure 1 is a schematic diagram of an automatic fixture for a laser welding machine provided by an embodiment of the present application.
[0026] Figure 2 is a schematic diagram of an automatic fixture for a laser welding machine provided by an embodiment of the present application.
[0027] Description of the Reference Numerals: 1, base; 11, bracket; 2, workbench; 21, slide rail; 3, welding table; 31, sliding table; 32, connecting table; 321, handle; 4, guide rod; 41, sliding sleeve; 5, pressing plate; 51, transparent plate; 61, first photoelectric sensor; 62, second photoelectric sensor; 71, horizontal cylinder; 72, vertical cylinder; 8, connecting bolt; 9, vision camera. Detailed Embodiment
[0028] The following will further describe the present application in detail Figure 1-2 with reference to the accompanying drawings.
[0029] An embodiment of the present application discloses an automatic fixture for a laser welding machine. Refer to Figure 1 and Figure 2 , which includes a base 1, a bracket 11, a workbench 2, a slide rail 21, a welding table 3, a guide rod 4, a sliding sleeve 41, a pressing plate 5 and a transparent plate 51. A plurality of brackets 11 are symmetrically and fixedly arranged on the base 1. The length direction of the bracket 11 is arranged vertically. The workbench 2 is horizontally arranged at the top of the bracket 11. The slide rail 21 is fixedly arranged on the surface of the workbench 2. The welding table 3 is slidably arranged on the slide rail 21. A horizontal sliding member is arranged on the workbench 2. The horizontal sliding member is a horizontal cylinder 71. The bottom end of the horizontal cylinder 71 is fixed on the workbench 2. The piston rod of the horizontal cylinder 71 is connected to the welding table 3.
[0030] Refer to Figure 1 and Figure 2 , a plurality of guide rods 4 are fixedly arranged on the base 1 in the vertical direction. The sliding sleeve 41 is slidably arranged on the guide rod 4. The pressing plate 5 is fixedly arranged between the sliding sleeves 41. The pressing plate 5 is arranged horizontally. The transparent plate 51 is arranged on the pressing plate 5. The transparent plate 51 is made of transparent glass. A vertical sliding member is arranged on the base 1. The vertical sliding member is a vertical cylinder 72. The bottom end of the vertical cylinder 72 is fixed on the base 1. The piston rod of the vertical cylinder 72 is connected to the pressing plate 5. When loading the workpiece to be welded, the welding table 3 is located at one end of the base 1, while the pressing plate 5 is located at the other end of the base 1. The worker places the workpiece on the welding table 3, and then the horizontal cylinder 71 drives the welding table 3 to slide on the slide rail 21 along the length direction of the slide rail 21. The horizontal cylinder 71 drives the welding table 3 to slide to directly below the pressing plate 5. Then the vertical cylinder 72 works. The vertical cylinder 72 drives the sliding sleeve 41 to slide on the guide rod 4 in the vertical direction, driving the pressing plate 5 to descend, so that the transparent plate 51 on the pressing plate 5 abuts against the workpiece on the welding table 3. Then the laser welding system directly above the pressing plate 5 works to weld the workpiece. After welding, the vertical cylinder 72 and the horizontal cylinder 71 are reset successively. Finally, the worker unloads the workpiece on the welding table 3. Since the loading and unloading are far away from directly below the laser welding system, the phenomenon of laser radiation damaging personnel is reduced, and the safety of production and processing is improved.
[0031] Refer to Figure 1 and Figure 2, it further includes a controller, a first photoelectric sensor 61 and a second photoelectric sensor 62. The first photoelectric sensor 61 is arranged on the workbench 2 and is signal-connected to the controller. The second photoelectric sensor 62 is arranged on the pressing plate 5 and is signal-connected to the controller. The vertical air cylinder 72 and the horizontal air cylinder 71 are both signal-connected to the controller. After placing the workpiece on the welding table 3, the horizontal air cylinder 71 drives the welding table 3 to slide to directly below the pressing plate 5. At this time, the first photoelectric sensor 61 will receive the signal of the welding table 3. When the first photoelectric sensor 61 detects the signal value, the controller automatically controls the vertical air cylinder 72 to work, so that the transparent plate 51 on the pressing plate 5 abuts against the workpiece on the welding table 3. At this time, the second photoelectric sensor 62 on the pressing plate 5 will detect the signal, and the controller automatically controls the laser welding system to work, thereby improving the automation degree during the loading and unloading process and eliminating the need for frequent manual operations.
[0032] Refer to Figure 1 , the welding table 3 includes a sliding table 31 and a connecting table 32. The sliding table 31 is slidably arranged on the slide rail 21. The connecting table 32 is provided with a receiving groove for placing the workpiece. The end walls of the connecting table 32 are symmetrically and fixedly provided with handles 321. The connecting table 32 is located above the sliding table 31. A connecting member is arranged between the connecting table 32 and the sliding table 31. The connecting member includes a plurality of connecting bolts 8. The connecting bolts 8 penetrate through the connecting table 32 and are threadedly connected to the sliding table 31. The connecting table 32 and the sliding table 31 can be detachably connected by using the connecting bolts 8, and different connecting tables 32 can be replaced. The shapes of the receiving grooves on different connecting tables 32 are different. Changing the connecting table 32 facilitates placing workpieces of different shapes, so as to process workpieces of different shapes and improve the applicable range of the fixture.
[0033] Refer to Figure 2 , a vision camera 9 is arranged on the side wall of one of the sliding sleeves 41. The vision camera 9 is connected to a processor, and the processor is connected to an alarm. After placing the workpiece on the welding table 3, the vision camera 9 takes a picture of the workpiece from the side of the welding table 3. The processor receives the picture taken by the vision camera 9 and analyzes the flatness of the workpiece surface. When there are differences in flatness, the processor controls the alarm to sound an alarm, which is beneficial to ensuring the flatness of the workpiece after loading and further improving the accuracy during laser welding.
[0034] The implementation principle of an automatic fixture for a laser welding machine in an embodiment of the present application is as follows: When loading the workpiece to be welded, the operator places the workpiece on the welding table 3, and then the horizontal cylinder 71 drives the welding table 3 to slide along the length direction of the slide rail 21 on the slide rail 21. The horizontal cylinder 71 drives the welding table 3 to slide to directly below the pressing plate 5. When the first photoelectric sensor 61 detects the welding table 3, the controller controls the vertical cylinder 72 to operate. The vertical cylinder 72 drives the sliding sleeve 41 to slide along the vertical direction on the guide rod 4, driving the pressing plate 5 to descend, so that the transparent plate 51 on the pressing plate 5 abuts against the workpiece on the welding table 3. When the second photoelectric sensor 62 detects that the pressing plate 5 presses the welding table 3 tightly, the controller controls the laser welding system directly above the pressing plate 5 to operate to weld the workpiece. After welding, the vertical cylinder 72 and the horizontal cylinder 71 reset successively, making the welding table 3 move away from the pressing plate 5. Since the loading and unloading are far from directly below the laser welding system, the phenomenon of laser radiation damaging personnel is reduced, the safety of production and processing is improved, and at the same time, the control is convenient and fast, the automation degree is high, and the processing efficiency is high.
[0035] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. An automated fixture for a laser welding machine, characterized in that: It includes a base (1), a bracket (11), a workbench (2), a slide rail (21), a welding table (3), a guide rod (4), a sliding sleeve (41), a pressing plate (5) and a transparent plate (51). A number of brackets (11) are symmetrically and fixedly arranged on the base (1). The workbench (2) is horizontally arranged at the top of the bracket (11). The slide rail (21) is fixedly arranged on the surface of the workbench (2). The welding table (3) is slidably arranged on the slide rail (21). The welding table (3) is used for placing workpieces to be welded. A horizontal sliding member for driving the welding table (3) to slide on the slide rail (21) is arranged on the workbench (2). A number of guide rods (4) are fixedly arranged on the base (1). The sliding sleeve (41) is slidably arranged on the guide rod (4). The pressing plate (5) is fixedly arranged between the sliding sleeves (41). The transparent plate (51) is arranged on the pressing plate (5). A vertical sliding member for driving the sliding sleeve (41) to slide on the guide rod (4) is arranged on the base (1).
2. The automatic fixture for a laser welding machine according to claim 1, wherein: It further includes a controller, a first photoelectric sensor (61) and a second photoelectric sensor (62). The first photoelectric sensor (61) is arranged on the workbench (2) and is signal-connected to the controller. The second photoelectric sensor (62) is arranged on the pressing plate (5) and is signal-connected to the controller. Both the horizontal sliding member and the vertical sliding member are signal-connected to the controller. The controller is used to control the vertical sliding member to work when the first photoelectric sensor (61) detects a signal value. The controller is used to control the laser welding system to work when the second photoelectric sensor (62) detects a signal value.
3. The automatic fixture for a laser welding machine according to claim 1, characterized in that: The horizontal sliding member is a horizontal cylinder (71). The bottom end of the horizontal cylinder (71) is fixed on the workbench (2). The piston rod of the horizontal cylinder (71) is connected to the welding table (3).
4. An automated fixture for a laser welding machine according to claim 1, wherein: The vertical sliding member is a vertical cylinder (72). The bottom end of the vertical cylinder (72) is fixed on the base (1). The piston rod of the vertical cylinder (72) is connected to the pressing plate (5).
5. The automated fixture for a laser welding machine according to claim 1, wherein: The welding table (3) includes a sliding table (31) and a connecting table (32). The sliding table (31) is slidably arranged on the slide rail (21). The connecting table (32) is detachably connected to the sliding table (31). A receiving groove for placing workpieces is arranged on the connecting table (32). A connecting member is arranged between the connecting table (32) and the sliding table (31). The connecting member is used to fix the connecting table (32) on the sliding table (31).
6. The automatic fixture for a laser welding machine according to claim 5, wherein: The connecting member includes a number of connecting bolts (8). The connecting bolts (8) pass through the connecting table (32) and are threadedly connected to the sliding table (31).
7. The automatic fixture for a laser welding machine according to claim 5, characterized in that: Handle grips (321) are symmetrically arranged on the end wall of the connecting table (32).
8. The automatic fixture for a laser welding machine according to claim 1, characterized in that: A vision camera (9) is arranged on the side wall of one of the sliding sleeves (41). The vision camera (9) is connected to a processor. The processor is connected to an alarm. The processor is used to analyze the flatness of the workpiece surface photographed by the vision camera (9) and control the alarm to alarm when there are differences in flatness.