An efficient parallel table buckle laser welding automated production line

Abstract

The present invention belongs to the technical field of automatic watch buckle welding lines, and specifically discloses an efficient parallel laser welding automatic production line for watch buckles, which includes a frame. Along the length direction of the frame, there are a loading conveyor line, an unloading conveyor line, a laser welding group, and a return conveyor line. The loading conveyor line and the unloading conveyor line are arranged side by side on the frame, and the loading conveyor line is located between the unloading conveyor line and the laser welding group. The laser welding group is composed of multiple laser welders. A buffer pushing device is provided on the buffer table between the laser welder and the loading conveyor line. An upper and lower material device is jointly provided above the buffer table and the unloading conveyor line. The return conveyor line passes through the frame and is opposite to the conveying direction of the unloading conveyor line. The present invention separates the loading and unloading conveyor lines to make the loading and unloading smooth, and uses the upper and lower material device to transfer the fixture on the buffer table to the laser welder for welding, and then transfers it to the unloading conveyor line for output after welding, and the empty fixture is transported back by the return conveyor line, which can improve the welding production efficiency and realize efficient automatic welding.

Description

Technical Field

[0001] The present invention belongs to the technical field of automatic watch buckle welding lines, and particularly relates to an efficient parallel laser welding automatic production line for watch buckles. Background Art

[0002] In the current field of industrial automation, especially for processing production lines of small precision components such as watch buckles, a relatively traditional layout method is generally adopted, that is, a single conveyor line is used to simultaneously undertake the functions of loading and unloading. Although this layout mode simplifies the system structure, a series of efficiency bottlenecks are exposed in the actual production process. Since the loading and unloading share the same conveyor line, when the processing workstation (such as a laser welding machine) is temporarily unable to receive new jigs due to a long processing time or a fault, the entire conveyor line will come to a standstill. This blocking phenomenon not only prevents the timely loading of subsequent jigs to be processed, but also prolongs the unloading time of the finished jigs, directly disrupting the welding production rhythm and severely restricting the overall efficiency of the production line. At the same time, the existing designs often neglect the effective return mechanism of empty jigs. After the processed jigs are removed, the empty jigs need to be sent back to the loading area by another method (such as manual handling), which not only increases the labor cost but also reduces the automation level of the production line.

[0003] Therefore, the inventor is committed to designing a welding automatic line to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an efficient parallel laser welding automatic production line for watch buckles, which has smooth conveying, can improve the production efficiency of welding processing, reduce the labor cost, and achieve efficient automatic welding.

[0005] In order to achieve the above purpose, a technical solution adopted by the present invention is as follows:

[0006] An efficient parallel laser welding automatic production line for watch buckles, including a frame. Along the length direction of the frame, there are a loading conveyor line, an unloading conveyor line, a laser welding group, and a return conveyor line. The loading conveyor line and the unloading conveyor line are arranged side by side on the frame and have the same conveying direction. The loading conveyor line is located between the unloading conveyor line and the laser welding group. The laser welding group is composed of multiple laser welding machines and is arranged along the length direction of the frame. Between each laser welding machine and the loading conveyor line, there is a buffer table. Each buffer table is provided with a buffer pushing device. Above each buffer table and the unloading conveyor line, there is a loading and unloading device. The return conveyor line passes through the frame and is located below the unloading conveyor line, and the conveying direction of the return conveyor line is opposite to that of the unloading conveyor line.

[0007] As an improvement to the high-efficiency parallel watch buckle laser welding automated production line of the present invention, a return stop bar for preventing the fixture from detaching from the return conveyor line is provided at the head of the return conveyor line. The return conveyor line includes a plurality of return belts, and all the return belts are arranged along the length direction of the frame and are butted to form a return channel.

[0008] As an improvement to the high-efficiency parallel watch buckle laser welding automated production line of the present invention, the number of the loading conveyor lines is two, the unloading conveyor line is located between the two loading conveyor lines, the number of the laser welding groups is two, and the two loading conveyor lines are located between the two laser welding groups.

[0009] As an improvement to the high-efficiency parallel watch buckle laser welding automated production line of the present invention, a conveying stop bar for preventing the fixture from detaching from the unloading conveyor line is provided at the tail of the unloading conveyor line. The unloading conveyor line includes a plurality of conveying belts, and all the conveying belts are arranged along the length direction of the frame and are butted to form an unloading conveying channel.

[0010] As an improvement to the high-efficiency parallel watch buckle laser welding automated production line of the present invention, the width of the loading conveyor line is smaller than the width of the unloading conveyor line. The loading conveyor line includes a plurality of loading belts, and all the loading belts are arranged along the length direction of the frame and are butted to form a loading conveying channel.

[0011] As an improvement to the high-efficiency parallel watch buckle laser welding automated production line of the present invention, the buffer pushing device includes a pushing cylinder, a first blocking cylinder and a second blocking cylinder. The first blocking cylinder and the second blocking cylinder are arranged at intervals on the corresponding buffer table to form a buffer space. The pushing cylinder is fixed on the buffer table, and the pushing block at the output end of the pushing cylinder is located between the blocking piece at the output end of the first blocking cylinder and the blocking block at the output end of the second blocking cylinder.

[0012] As an improvement to the high-efficiency parallel watch buckle laser welding automated production line of the present invention, a laser welding platform device is provided in each laser welder. The laser welding platform device includes a fixing frame, a rotating plate is horizontally rotatably connected to the fixing frame, a turntable is vertically rotatably connected to the rotating plate, a workbench is fixedly carried on the turntable, limiting blocks and pressing members are arranged at intervals on the workbench. The limiting blocks are fixedly installed on the workbench, and the pressing members are slidably arranged on the workbench and jointly ensure the stability of the fixture holding the product during the working process with the limiting blocks.

[0013] As an improvement to the high-efficiency parallel watch buckle laser welding automated production line of the present invention, the limiting block and the pressing member are respectively located at two opposite corners of the fixture clamping the product. The pressing member includes a connecting block and a pressing block. The connecting block is slidably arranged on the workbench. The pressing block is V-shaped and its two ends press against the fixture clamping the product. The corner of the pressing block is hinged to the connecting block.

[0014] As an improvement to the high-efficiency parallel watch buckle laser welding automated production line of the present invention, pressing wheels are respectively rotatably connected to the bottoms of the two ends of the pressing block to form a limiting step for limit matching with the convex block on the side of the fixture. The two pressing wheels roll and press against the fixture clamping the product.

[0015] As an improvement to the high-efficiency parallel watch buckle laser welding automated production line of the present invention, the loading and unloading device includes a vertical moving slider, a longitudinal moving slider, a rotating frame and two pairs of clamping jaws. The slider is vertically movably arranged in the connecting frame of the machine frame. The longitudinal moving slider is longitudinally slidably arranged on the translational linear module of the vertical moving slider. The rotating frame is rotatably arranged below the longitudinal moving slider. The two pairs of clamping jaws are respectively vertically movably arranged at the two ends of the rotating frame.

[0016] Compared with the prior art, in the high-efficiency parallel watch buckle laser welding automated production line of the present invention, by separating the loading and unloading conveyor lines, the loading and unloading are smooth. The buffer pushing device is used to push the fixture clamping the product to be welded on the loading conveyor line to the buffer table for waiting for processing. Then, the loading and unloading device is used to transfer the fixture clamping the product to be welded on the buffer table to the corresponding laser welding machine for welding. After welding, the fixture clamping the welded product is placed on the unloading conveyor line for output by the loading and unloading device, and the empty fixture is automatically transported back by the return conveyor line, reducing labor costs. Each part works together to improve the production efficiency of welding processing and achieve high-efficiency automated welding. Description of the Drawings

[0017] Figure 1 is the top view of the high-efficiency parallel watch buckle laser welding automated production line of the present invention;

[0018] Figure 2 is the three-dimensional enlarged view of the loading conveyor line, unloading conveyor line and return conveyor line in the present invention;

[0019] Figure 3 is Figure 2 the enlarged view of part A in

[0020] Figure 4 is the three-dimensional enlarged view of the whole front section of the loading conveyor line, unloading conveyor line and return conveyor line in the present invention;

[0021] Figure 5 is Figure 4Enlarged view at position B in [the figure];

[0022] Figure 6 is Figure 4 Enlarged view at position C in [the figure];

[0023] Figure 7 is the three-dimensional enlarged view of the buffer pushing device and the buffer table of the present invention;

[0024] Figure 8 is the three-dimensional enlarged view of the middle section of the overall feeding conveyor line, discharging conveyor line and return conveyor line of the present invention;

[0025] Figure 9 is the three-dimensional enlarged view of the rear section of the overall feeding conveyor line, discharging conveyor line and return conveyor line of the present invention;

[0026] Figure 10 is Figure 9 Enlarged view at position D in [the figure];

[0027] Figure 11 is the three-dimensional enlarged view of a connecting frame and four loading and unloading devices of the present invention;

[0028] Figure 12 is the three-dimensional enlarged view of a loading and unloading device of the present invention;

[0029] Figure 13 is the three-dimensional enlarged view of the laser welding platform device of the present invention;

[0030] Figure 14 is the three-dimensional enlarged view of the workbench and each part carried by it in the laser welding platform device of the present invention;

[0031] Figure 15 is the three-dimensional enlarged view of the pressing member and the positioning cylinder of the present invention;

[0032] Figure 16 is the three-dimensional enlarged view of the fixture of the present invention.

[0033] Illustration:

[0034] 1. Loading conveyor line; 11. Front loading belt; 12. Middle loading belt; 13. Rear loading belt; 2. Unloading conveyor line; 21. Front conveying belt; 22. Middle conveying belt; 23. Rear conveying belt; 231. Conveying stop bar; 3. Return conveyor line; 31. Front return belt; 311. Return stop bar; 32. Middle return belt; 33. Rear return belt; 4. Buffer pushing device; 41. First blocking cylinder; 411. Blocking piece; 42. Second blocking cylinder; 421. Blocking block; 43. Pushing cylinder; 431. Pushing block; 5. Machine frame; 51. Buffer table; 52. Loading belt driving motor; 53. Side stop bar; 54. Connecting frame; 6. Fixture; 61. Protrusion; 62. Limiting groove; 7. Loading and unloading device; 71. Vertical moving slider; 72. Vertical moving linear module; 73. Horizontal moving linear module; 74. Rotary cylinder; 75. Rotary frame; 76. Clamping cylinder; 761. Claw; 77. Lifting cylinder; 78. Longitudinal moving slider; 8. Laser welder; 81. Fixed frame; 811. Fixed piece; 812. Photoelectric switch; 82. Horizontal rotary motor; 821. Rotary plate; 83. Vertical rotary motor; 831. Turntable; 84. Workbench; 841. Limiting block; 842. Slide rail; 843. Extension part; 85. Positioning cylinder; 851. Pressing piece; 852. Connecting block; 853. Pressing block; 854. Pressing wheel; 86. Laser welding platform; 87. Welding head; 88. Laser welding group. Detailed implementation manners

[0035] The following combines the accompanying drawings to specifically illustrate the implementation manners of the present invention. The accompanying drawings are only for reference and illustration, and do not constitute a limitation to the protection scope of the present invention patent.

[0036] Refer to Figures 1 to 16 , an efficient parallel buckle laser welding automated production line, including a machine frame 5. Along the length direction of the machine frame 5, there are arranged a loading conveyor line 1, an unloading conveyor line 2, a laser welding group 88 and a return conveyor line 3. The loading conveyor line 1 and the unloading conveyor line 2 are arranged side by side on the machine frame 5 and their conveying directions are the same. The loading conveyor line 1 is located between the unloading conveyor line 2 and the laser welding group 88. The laser welding group 88 is composed of multiple laser welders 8 (i.e., laser welding machines) and is arranged along the length direction of the machine frame 5. Between each laser welder 8 and the loading conveyor line 1, there is a buffer table 51. On each buffer table 51, there is a buffer pushing device 4. Above each buffer table 51 and the unloading conveyor line 2, there is a loading and unloading device 7. The return conveyor line 3 passes through the machine frame 5 and is located below the unloading conveyor line 2. The conveying direction of the return conveyor line 3 is opposite to that of the unloading conveyor line 2.

[0037] Refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 8 and Figure 9, the overall shape of the frame 5 is a long table shape. The number of the loading conveyor lines 1 is preferably two, and the unloading conveyor line 2 is located between the two loading conveyor lines 1. Since the jigs 6 holding products on the two loading conveyor lines 1 need to be placed on the unloading conveyor line 2 after processing, therefore, the unloading conveyor line 2 needs to carry a relatively large number of jigs 6, and the conveying space of the unloading conveyor line 2 needs to be larger than that of each loading conveyor line 1. In this embodiment, the width of the loading conveyor line 1 is smaller than the width of the unloading conveyor line 2. Each loading conveyor line 1 includes a plurality of loading belts. In this embodiment, six loading belts are preferably used. The six loading belts are specifically two front loading belts 11, two middle loading belts 12, and two rear loading belts 13. The two middle loading belts 12 are located between the two front loading belts 11 and the two rear loading belts 13. The two front loading belts 11, the two middle loading belts 12, and the two rear loading belts 13 are sequentially arranged along the length direction of the frame 5 and are butted to form a loading conveying channel. The two front loading belts 11 are butted to form the front section of the loading conveying channel, and the two rear loading belts 13 are butted to form the rear section of the loading conveying channel. The two front loading belts 11, the two middle loading belts 12, and the two rear loading belts 13 are respectively controlled by different loading belt driving motors 52 to run in the same direction. Long strip-shaped side retaining strips 53 are respectively arranged on both sides of all the loading belts. The side retaining strips 53 on both sides are fixed to the frame 5, and the two of them and all the loading belts enclose the above-mentioned loading conveying channel.

[0038] Referring to Figure 1 and Figure 2 , the number of the laser welding groups 88 is preferably two. The two loading conveyor lines 1 are located between the two laser welding groups 88. The buffer tables 51, the buffer pushing devices 4, and the loading and unloading devices 7 are respectively arranged in one-to-one correspondence with the laser welding machines 8. In this embodiment, when the total number of the laser welding machines 8 is sixteen, every eight laser welding machines 8 form a row to form a laser welding group 88. The numbers of the buffer tables 51, the buffer pushing devices 4, and the loading and unloading devices 7 are also the same as those of the laser welding machines 8. All the buffer tables 51 are fixedly connected to the frame 5.

[0039] Referring to Figure 2 , Figure 4 , Figure 6 , Figure 7 , Figure 8 and Figure 9, each buffer pushing device 4 includes a pushing cylinder 43, two first blocking cylinders 41 and a second blocking cylinder 42. The pushing cylinder 43 is connected to the corresponding buffer table 51 through a bracket. A pushing block 431 is provided at the output end of the pushing cylinder 43. The pushing block 431 is located directly above the feeding conveyor line 1. The two first blocking cylinders 41 and the second blocking cylinder 42 are arranged at intervals in sequence along the conveying direction of the feeding conveyor line 1. The two first blocking cylinders 41 and the second blocking cylinder 42 are arranged at intervals on the corresponding buffer table 51 to form a buffer space for temporarily placing the fixture 6. A blocking member 411 is provided at the output end of each first blocking cylinder 41, and a blocking block 421 is provided at the output end of the second blocking cylinder 42. Both the blocking member 411 and the blocking block 421 are located directly above the feeding conveyor line 1. The pushing block 431 is located between the blocking block 421 and the two blocking members 411.

[0040] Referring to Figure 2 , Figure 4 , Figure 8 and Figure 9 , the discharging conveyor line 2 is used to convey the fixture 6 clamping the product to be processed. The discharging conveyor line 2 includes a plurality of conveyor belts. Preferably, three conveyor belts are used in the present invention, specifically a front conveyor belt 21, a middle conveyor belt 22 and a rear conveyor belt 23. The front conveyor belt 21, the middle conveyor belt 22 and the rear conveyor belt 23 are all arranged along the length direction of the frame 5 and are butted to form a discharging conveyor channel. The middle conveyor belt 22 is located between the front conveyor belt 21 and the rear conveyor belt 23. The front conveyor belt 21 constitutes the front end of the discharging conveyor channel, and the rear conveyor belt 23 constitutes the rear end of the discharging conveyor channel. The front conveyor belt 21, the middle conveyor belt 22 and the rear conveyor belt 23 are respectively controlled by different discharging driving motors to run in the same direction. In order to prevent the fixture 6 clamping the processed product from detaching from the discharging conveyor line 2, a U-shaped conveying stop bar 231 is provided at the tail of the rear conveyor belt 23, and the conveying stop bar 231 is fixed to the tail of the frame 5.

[0041] Referring to Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9, the return conveyor line 3 is located directly below the blanking conveyor line 2. The return conveyor line 3 includes a plurality of return belts. Preferably, the present invention has three return belts, specifically a front return belt 31, a middle return belt 32, and a rear return belt 33. The middle return belt 32 is located between the front return belt 31 and the rear return belt 33. The front return belt 31, the middle return belt 32, and the rear return belt 33 are arranged along the length direction of the frame 5 and are butted to form a return channel. The front return belt 31 constitutes the front section of the return channel, and the rear return belt 33 constitutes the rear end of the return channel. In order to prevent the fixture 6 from detaching from the return conveyor line 3, a U-shaped return stop bar 311 is provided at the head of the front return belt 31. The front return belt 31, the middle return belt 32, and the rear return belt 33 are respectively controlled by different return drive motors to run in the same direction.

[0042] Refer to Figure 1 , Figure 11 and Figure 12 , each loading and unloading device 7 includes a vertical movement slider 71, a vertical movement linear module 72, a longitudinal movement slider 78, a translation linear module 73, a rotating frame 75, a rotating cylinder 74, two lifting cylinders 77, two clamping cylinders 76, and two pairs of clamping jaws 761. The vertical movement linear module 72 is fixed in the connecting frame 54 of the frame 5. The vertical movement slider 71 is vertically slidably arranged on the vertical movement linear module 72. The translation linear module 73 is fixed on the vertical movement slider 71. The longitudinal movement slider 78 is longitudinally slidably arranged on the translation linear module 73. The rotating cylinder 74 is fixed at the bottom of the longitudinal movement slider 78. The rotating frame 75 is located below the longitudinal movement slider 78. The rotating frame 75 is located at the rotating output end of the rotating cylinder 74. The rotating frame 75 is rotatably connected to the longitudinal movement slider 78 through the rotating cylinder 74. Two lifting cylinders 77 are fixed at the two ends of the rotating frame 75. Two clamping cylinders 76 are slidably arranged on the sides of the two lifting cylinders 77 in one-to-one correspondence. Two pairs of clamping jaws 761 are respectively located at the output ends of the two clamping cylinders 76 so that the two pairs of clamping jaws 761 can vertically move at the two ends of the rotating frame 75.

[0043] Refer to Figure 1 , Figure 13 , Figure 14 , Figure 15 and Figure 16, each laser welder 8 is provided with a laser welding platform device 86. The laser welding platform device 86 includes a fixed frame 81, a rotating plate 821, a workbench 84, a limiting block 841, a pressing member 851 and a turntable 831. The rotating plate 821 is horizontally rotatably arranged on the fixed frame 81. The turntable 831 is vertically rotatably arranged on the rotating plate 821. The workbench 84 is fixedly carried on the turntable 831. The limiting block 841 and the pressing member 851 are arranged at intervals on the workbench 84. The limiting block 841 is fixedly installed on the workbench 84. The pressing member 851 is slidably arranged on the workbench 84 and jointly ensures the stability of the fixture 6 holding the product during the working process with the limiting block 841.

[0044] Refer to Figure 13 , the overall shape of the fixed frame 81 is U-shaped and it is fixed inside the laser welder 8. The top parts of the two ends of the fixed frame 81 are respectively connected with a photoelectric switch 812 through fixing pieces 811. The workbench 84 is located between the two photoelectric switches 812. The rotating plate 821 is rectangular. The rotating plate 821 is located inside the fixed frame 81 and its two opposite ends (i.e., the left and right ends) are respectively rotationally connected to the two opposite side walls of the fixed frame 81 in a one-to-one correspondence. A horizontal rotation motor 82 is fixed on the outer side wall of the fixed frame 81. The output shaft of the horizontal rotation motor 82 passes through the side wall of the fixed frame 81 and is fixedly connected with the rotating plate 821. The horizontal rotation motor 82 can directly control the rotation of the rotating plate 821 inside the fixed frame 81. A vertical rotation driving source is connected to the rotating plate 821. The vertical rotation driving source is specifically a vertical rotation motor 83. The vertical rotation motor 83 and the turntable 831 are respectively located on the two opposite surfaces of the rotating plate 821. The vertical rotation motor 83 is fixedly connected with the rotating plate 821. The output shaft of the vertical rotation motor 83 passes through the rotating plate 821 and is fixedly connected with the turntable 831. The vertical rotation motor 83 can control the vertical rotation of the turntable 831 on the rotating plate 821.

[0045] Refer to Figure 13 , Figure 14 and Figure 15, the workbench 84 is fixed to the top of the turntable 831. At a position corresponding to the pressing member 851, the workbench 84 integrally extends outward to form an extension portion 843. Two slide rails 842 are fixedly installed at intervals on the extension portion 843. A positioning driving source is also fixedly installed on the extension portion 843. The positioning driving source is preferably a positioning cylinder 85. The limiting block 841 and the pressing member 851 are respectively located at two opposite corners of the fixture 6 holding the product. Among them, the limiting block 841 is L-shaped and matches the corresponding corner of the fixture 6 holding the product. The pressing member 851 includes a connecting block 852 and a pressing block 853. The bottom of the connecting block 852 is slidably connected to the two slide rails 842, so that the connecting block 852 is slidably arranged on the workbench 84. One end of the connecting block 852 close to the limiting block 841 is fixed to the output end of the positioning cylinder 85. At the edge of the connecting block 852 close to the limiting block 841, there is a V-shaped opening. The pressing block 853 is V-shaped. The corner of the pressing block 853 is located in the V-shaped opening on the connecting block 852 and is hinged to the connecting block 852. The two ends of the pressing block 853 press against the fixture 6 holding the product. Specifically, pressing wheels 854 are respectively rotatably connected to the bottoms of the two ends of the pressing block 853, and a limiting step for limiting and matching with the convex block 61 on the side of the fixture 6 is formed. The two pressing wheels 854 roll and press against the fixture 6 holding the product.

[0046] Referring to Figures 1 to 16 , the high-efficiency parallel buckle laser welding automated production line of the present invention has a total of sixteen welding stations. The working principles of each welding station are basically the same. Now, the working principle of one of the welding stations will be taken as an example for illustration:

[0047] The loading operator clamps the product in the limiting groove 62 of the fixture 6, and then places the fixture 6 holding the product to be processed at the head of the loading conveyor channel of the loading conveyor line 1. The fixture 6 holding the product to be processed moves forward as each loading belt runs;

[0048] When multiple fixtures 6 holding the product to be processed move to the three blocking cylinders, the second blocking cylinder 42 drives the blocking block 421 to move into the loading conveyor channel to block the first fixture 6 at the front end. At this time, the two first blocking cylinders 41 respectively drive their own blocking members 411 to move into the loading conveyor channel, and the two blocking members 411 respectively block the latter two fixtures 6;

[0049] The pushing cylinder 43 drives the pushing block 431 to slide to push the fixture 6 blocked by the blocking block 421 from the loading conveyor channel to the buffer table 51;

[0050] The up-and-down moving linear module 72 drives the vertical moving slider 71 to move vertically. The translation linear module 73, the longitudinal moving slider 78, the rotating frame 75, the two lifting cylinders 77, and the two clamping cylinders 76 also move vertically together with the translation linear module 73. The translation linear module 73 drives the longitudinal moving slider 78, the rotating frame 75, the two lifting cylinders 77, and the two clamping cylinders 76 to move longitudinally together until the clamping jaws 761 at the front end are directly above the buffer table 51. The front-end lifting cylinder 77 controls the clamping cylinder 76 to move downward, and the front-end clamping cylinder 76 controls the clamping jaws 761 to clamp the fixture 6 holding the product to be welded on the buffer table 51 and place the fixture 6 on the workbench 84 of the laser welding machine 8;

[0051] The positioning cylinder 85 drives the connecting block 852 and the pressing block 853 to slide forward along the two slide rails 842 together until the two ends of the pressing block 853 are closely attached to the convex blocks 61 on both sides of the fixture 6. At this time, the two pressing wheels 854 are respectively located below the corresponding convex blocks 61. The limiting block 841 and the pressing block 853 are respectively located at the two opposite corners of the fixture 6 and jointly clamp the fixture 6. The vertical rotation motor 83 drives the turntable 831 and the workbench 84 on the turntable 831, the limiting block 841, the fixture 6 holding the product, the pressing member 851, and the positioning cylinder 85 to rotate a certain angle along the vertical axis (i.e., the Z-axis) together. At the same time, the horizontal rotation motor 82 drives the rotating plate 821 to rotate. The vertical rotation motor 83, the turntable 831, the workbench 84, the limiting block 841, the fixture 6 holding the product, the pressing member 851, and the positioning cylinder 85 rotate a certain angle along the horizontal axis (i.e., the X-axis) together with the rotating plate 821 to adjust the fixture 6 holding the product to an appropriate angle. The welding head 87 of the laser welding machine 8 moves to the position where the product needs to be welded and welds the product clamped by the fixture 6;

[0052] After welding is completed, the translation linear module 73 controls the rotating frame 75 and all the components on the rotating frame 75 to move downward to one side of the blanking conveyor line 2. The rotating cylinder 74 controls the rotating frame 75 to rotate 180 degrees to alternate the positions of the two pairs of clamping jaws 761, so that the pair of clamping jaws 761 at the rear end can place the fixture 6 holding the welded product into the blanking conveyor channel of the blanking conveyor line 2. At the same time, the pair of clamping jaws 761 at the front end clamp the fixture 6 holding the product to be welded on the buffer table 51;

[0053] When the fixture 6 holding the processed product moves to the tail of the blanking conveyor line 2, the conveying stop bar 231 blocks each fixture 6 holding the processed product. The blanking operator takes down the fixture 6 holding the processed product, removes the processed product from the fixture 6 and places the empty fixture on the return channel of the return conveyor line 3;

[0054] The empty fixture moves in the reverse direction as each return belt runs until the empty fixture moves to the head of the return conveyor line 3. The return stop bar 311 blocks the continuous movement of the empty fixture. The loading operator removes the empty fixture and clamps the product to be welded, and then places it on the loading conveyor line 1 again. This process repeats continuously.

[0055] For the high-efficiency parallel watch buckle laser welding automated production line of the present invention, by separating the loading and unloading conveyor lines, the loading and unloading are smooth. At the same time, the buffer pushing device 4 is used to push the fixture 6 clamping the product to be welded on the loading conveyor line 1 to the buffer table 51 for waiting for processing. Then, the loading and unloading device 7 is used to transfer the fixture 6 clamping the product to be welded on the buffer table 51 to the corresponding laser welder 8 for welding. After welding, the fixture 6 clamping the welded product is placed on the unloading conveyor line 2 for output by the loading and unloading device 7, and the empty fixture is automatically transported back by the return conveyor line 3, reducing labor costs. Each part works together to improve the production efficiency of welding processing and achieve high-efficiency automated welding.

[0056] The above-disclosed are only the preferred embodiments of the present invention and cannot be used to limit the scope of the patent protection of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. An efficient parallel table buckle laser welding automated production line, including a frame, characterized in that, The frame is provided with a loading conveyor line, an unloading conveyor line, a laser welding group and a return conveyor line along its length direction. The loading conveyor line and the unloading conveyor line are arranged side by side on the frame and have the same conveying direction. The loading conveyor line is located between the unloading conveyor line and the laser welding group. The laser welding group is composed of multiple laser welding machines and is arranged along the length direction of the frame. A buffer table is provided between each laser welding machine and the loading conveyor line. A buffer pushing device is provided on each buffer table. An upper and lower material device is commonly provided above each buffer table and the unloading conveyor line. The return conveyor line passes through the frame and is located below the unloading conveyor line. The conveying direction of the return conveyor line is opposite to that of the unloading conveyor line; Each laser welding machine is internally provided with a laser welding platform device, and the laser welding platform device includes a fixing frame, A rotating plate is horizontally rotatably connected to the fixing frame, and a turntable is vertically rotatably connected to the rotating plate, A workbench is fixedly carried on the turntable. Limit blocks and pressing members are arranged at intervals on the workbench. The limit blocks are fixedly installed on the workbench, The pressing members are slidably arranged on the workbench and jointly ensure the stability of the fixture holding the product during the working process with the limit blocks; The limit blocks and the pressing members are respectively located at two opposite corners of the fixture holding the product. The pressing member includes A connecting block and a pressing block. The connecting block is slidably arranged on the workbench. The pressing block is V-shaped and its two ends press against the fixture holding the product, The corner of the pressing block is hinged to the connecting block. A return stop bar for preventing the fixture from detaching from the return conveyor line is provided at the head of the return conveyor line. The return conveyor line includes multiple return belts, and all the return belts are arranged along the length direction of the frame and are butted to form a return channel.

2. The high-efficiency parallel table buckle laser welding automated production line according to claim 1, wherein The number of the loading conveyor lines is two. The unloading conveyor line is located between the two loading conveyor lines. The number of the laser welding groups is two. The two loading conveyor lines are located between the two laser welding groups.

3. The high-efficiency parallel table buckle laser welding automated production line according to claim 1, characterized in that, A conveying stop bar for preventing the fixture from detaching from the unloading conveyor line is provided at the tail of the unloading conveyor line. The unloading conveyor line includes multiple conveying belts, and all the conveying belts are arranged along the length direction of the frame and are butted to form an unloading conveying channel.

4. The high-efficiency parallel table buckle laser welding automated production line according to claim 1, characterized in that, The width of the loading conveyor line is smaller than that of the unloading conveyor line. The loading conveyor line includes multiple loading belts, and all the loading belts are arranged along the length direction of the frame and are butted to form a loading conveying channel.

5. The high-efficiency parallel table buckle laser welding automated production line according to claim 1, characterized in that, The buffer pushing device includes a pushing cylinder, a first blocking cylinder and a second blocking cylinder. The first blocking cylinder and the second blocking cylinder are arranged at intervals on the corresponding buffer table to form a buffer space. The pushing cylinder is fixed on the buffer table, and the pushing block at the output end of the pushing cylinder is located between the blocking member at the output end of the first blocking cylinder and the blocking block at the output end of the second blocking cylinder.

6. The high-efficiency parallel table buckle laser welding automated production line according to claim 1, wherein ​ 7. The high-efficiency parallel table buckle laser welding automated production line according to claim 1, wherein At the bottom of the two ends of the pressing block, pressing wheels are respectively rotatably connected and form a limiting step for limiting and matching with the convex block on the side of the fixture. The two pressing wheels roll and press the fixture clamping the product.

8. The high-efficiency parallel table buckle laser welding automated production line according to claim 1, characterized in that, The loading and unloading device includes a vertical moving slider, a longitudinal moving slider, a rotating frame and two pairs of clamping jaws. The slider is vertically movably arranged in the connecting frame of the machine frame. The longitudinal moving slider is longitudinally slidably arranged on the translation linear module of the vertical moving slider. The rotating frame is rotatably arranged below the longitudinal moving slider. The two pairs of clamping jaws are respectively vertically movably arranged at the two ends of the rotating frame.

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