Efficient parallel watch buckle laser welding automatic production line

Abstract

The invention belongs to the technical field of watch buckle welding automatic lines, and particularly discloses an efficient parallel watch buckle laser welding automatic production line which comprises a rack, the rack is provided with a feeding conveying line, a discharging conveying line, a laser welding set and a backflow conveying line in the length direction of the rack, and the feeding conveying line and the discharging conveying line are arranged on the rack side by side; the feeding conveying line is located between the discharging conveying line and the laser welding set, the laser welding set is composed of a plurality of laser welding machines, a cache pushing device is arranged on a cache table between the laser welding machines and the feeding conveying line, and a feeding and discharging device is jointly arranged above the cache table and the discharging conveying line. The backflow conveying line penetrates through the rack and is opposite to the discharging conveying line in conveying direction. The feeding conveying line and the discharging conveying line are separated, feeding and discharging are smooth, the clamps on the buffering table are transferred to the laser welding machine through the feeding and discharging device to be welded, the clamps are transferred to the discharging conveying line to be output after welding, the empty clamps are conveyed back through the backflow conveying line, the welding production efficiency can be improved, and efficient and automatic welding is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of watch buckle welding automatic lines, and in particular relates to a high-efficiency parallel watch buckle laser welding automatic production line. Background Art

[0002] In the current field of industrial automation, especially for the processing production lines of small precision parts such as watch buckles, a more 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, it exposes a series of efficiency bottlenecks in the actual production process. Since loading and unloading share the same conveyor line, when the processing workstation (such as a laser welding machine) is temporarily unable to receive a new fixture due to a long processing time or failure, the entire conveyor line will fall into a stagnant state. This blocking phenomenon not only prevents the timely loading of subsequent fixtures to be processed, but also prolongs the unloading time of the finished fixture, directly disrupting the welding production rhythm and seriously restricting the overall efficiency of the production line. At the same time, the existing design often ignores the effective reflux mechanism of the empty fixture. After the finished fixture is removed, the empty fixture needs to be sent back to the loading area in another way (such as manual handling), which not only increases the labor cost, but also reduces the degree of automation 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 a high-efficiency parallel buckle laser welding automatic production line, which has smooth transportation, can improve the production efficiency of welding processing, reduce labor costs, and realize high-efficiency automatic welding.

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

[0006] A high-efficiency parallel buckle laser welding automated production line comprises a frame, wherein the frame is provided with a loading conveyor line, a unloading conveyor line, a laser welding group and a reflow conveyor line along the length direction thereof, 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 a plurality of laser welding machines and arranged along the length direction of the frame, a buffer table is provided between each of the laser welding machines and the loading conveyor line, a buffer pushing device is provided on each of the buffer tables, a loading and unloading device is provided above each of the buffer tables and the unloading conveyor line, the reflow conveyor line passes through the frame and is located below the unloading conveyor line, and the conveying direction of the reflow conveyor line is opposite to that of the unloading conveyor line.

[0007] As an improvement of the efficient parallel watch buckle laser welding automated production line of the present invention, the head of the reflow conveyor line is provided with a reflow baffle for preventing the fixture from detaching from the reflow conveyor line. The reflow conveyor line includes multiple reflow belts, and all of the reflow belts are arranged along the length direction of the frame and connected to form a reflow channel.

[0008] As an improvement of the efficient parallel watch buckle laser welding automatic 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 of the efficient parallel buckle laser welding automatic production line of the present invention, a conveying baffle bar is provided at the tail of the unloading conveyor line to prevent the fixture from detaching from the unloading conveyor line. The unloading conveyor line includes multiple conveyor belts, and all of the conveyor belts are arranged along the length direction of the frame and connected to form a unloading conveying channel.

[0010] As an improvement of the efficient parallel buckle laser welding automatic 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 multiple loading belts, and all of the loading belts are arranged along the length direction of the frame and connected to form a loading conveying channel.

[0011] As an improvement of the efficient parallel watch buckle laser welding automatic production line of the present invention, the cache 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 cache table to form a cache space. The pushing cylinder is fixed on the cache 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 of the efficient parallel watch buckle laser welding automated production line of the present invention, each of the laser welding machines is provided with a laser welding platform device, and the laser welding platform device includes a fixed frame, a rotating plate is horizontally rotatably connected to the fixed frame, a turntable is vertically rotatably connected to the rotating plate, a workbench is fixedly supported on the turntable, and limit blocks and clamping members are spaced apart on the workbench, the limit blocks are fixedly mounted on the workbench, the clamping member is slidably arranged on the workbench and together with the limit blocks ensures the stability of the fixture holding the product during the working process.

[0013] As an improvement of the efficient parallel buckle laser welding automatic production line of the present invention, the limit block and the clamping piece are respectively located at two opposite corners of the fixture that clamps the product, and the clamping piece includes a connecting block and a clamping block. The connecting block is slidably arranged on the workbench, and the clamping block is V-shaped and its two ends press against the fixture that clamps the product, and the corners of the clamping block are hinged to the connecting block.

[0014] As an improvement of the efficient parallel watch buckle laser welding automatic production line of the present invention, the bottom of the two ends of the clamping block are rotatably connected to clamping wheels and form limiting steps for limiting and matching with the protrusions on the side of the clamp, and the two clamping wheels roll to press the clamp that holds the product.

[0015] As an improvement of the efficient parallel buckle laser welding automatic production line of the present invention, the loading and unloading device includes a vertical slider, a longitudinal slider, a rotating frame and two pairs of clamps. The slider is vertically movable in the connecting frame of the frame, the longitudinal slider is longitudinally sliding on the translation linear module of the vertical slider, the rotating frame is rotatably arranged below the longitudinal slider, and the two pairs of clamps are respectively vertically movable at the two ends of the rotating frame.

[0016] Compared with the prior art, the efficient parallel watch buckle laser welding automated production line of the present invention separates the loading and unloading conveyor lines to make the loading and unloading conveying smooth, and utilizes the buffer pushing device to push the fixture holding the product to be welded on the loading conveyor line to the buffer table to wait for processing, and then utilizes the loading and unloading device to transfer the fixture holding the product to be welded on the buffer table to the corresponding laser welding machine for welding, and after welding is completed, the loading and unloading device places the fixture holding the welded product on the unloading conveyor line for output, and automatically transports the empty fixture back from the reflux conveyor line, thereby reducing labor costs, and each part works together to improve the production efficiency of the welding process, and realizes efficient automated welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view of the efficient parallel buckle laser welding automatic production line of the present invention;

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

[0019] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

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

[0021] Figure 5 yes Figure 4The enlarged view of point B in the middle;

[0022] Figure 6 yes Figure 4 Enlarged view of point C in the middle;

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

[0024] Figure 8 It is a three-dimensional enlarged view of the entire middle section of the loading conveyor line, the unloading conveyor line and the return conveyor line of the present invention;

[0025] Fig. 9 It is a three-dimensional enlarged view of the entire rear section of the loading conveyor line, the unloading conveyor line and the return conveyor line of the present invention;

[0026] Fig.10 yes Fig. 9 The enlarged view of point D in the middle;

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

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

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

[0030] Fig.14 It is a three-dimensional enlarged view of the workbench and the various parts carried by it in the laser welding platform device of the present invention;

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

[0032] Fig.16 It is a three-dimensional enlarged view of the clamp of the present invention.

[0033] Illustration Description:

[0034] 1. Feeding conveyor line; 11. Front feeding belt; 12. Middle feeding belt; 13. Rear feeding belt; 2. Unloading conveyor line; 21. Front conveyor belt; 22. Middle conveyor belt; 23. Rear conveyor belt; 231. Conveying baffle; 3. Return conveyor line; 31. Front return belt; 311. Return baffle; 32. Middle return belt; 33. Rear return belt; 4. Cache pushing device; 41. First blocking cylinder; 411. Blocking member; 42. Second blocking cylinder; 421. Blocking block; 43. Pushing cylinder; 431. Pushing block; 5. Rack; 51. Cache table; 52. Feeding belt driving motor; 53. Side baffle; 54. Connecting frame; 6. Clamp; 61. Bump; 62. Limiting groove; 7. Loading and unloading device; 71, vertical sliding block; 72, vertical moving linear module; 73, translational linear module; 74, rotating cylinder; 75, rotating frame; 76, clamping cylinder; 761, clamping claw; 77, lifting cylinder; 78, longitudinal sliding block; 8, laser welding machine; 81, fixed frame; 811, fixed plate; 812, photoelectric switch; 82, horizontal rotating motor; 821, rotating plate; 83, vertical rotating motor; 831, turntable; 84, workbench; 841, limit block; 842, slide rail; 843, extension; 85, positioning cylinder; 851, clamping piece; 852, connecting block; 853, clamping block; 854, clamping wheel; 86, laser welding platform; 87, welding head; 88, laser welding group. DETAILED DESCRIPTION

[0035] The following specifically describes the implementation modes of the present invention in conjunction with the accompanying drawings. The accompanying drawings are only for reference and illustration and do not constitute a limitation on the scope of patent protection of the present invention.

[0036] Reference Figures 1 to 16 , an efficient parallel buckle laser welding automatic production line, including a frame 5, the frame 5 is provided with a loading conveyor line 1, a unloading conveyor line 2, a laser welding group 88 and a reflux conveyor line 3 along its length direction, the loading conveyor line 1 and the unloading conveyor line 2 are arranged side by side on the frame 5 and the conveying directions of the two 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 a plurality of laser welding machines 8 (i.e., laser welding machines) and arranged along the length direction of the frame 5, a buffer table 51 is provided between each laser welding machine 8 and the loading conveyor line 1, each buffer table 51 is provided with a buffer pushing device 4, each buffer table 51 and the upper part of the unloading conveyor line 2 are jointly provided with a loading and unloading device 7, the reflux conveyor line 3 passes through the frame 5 and is located below the unloading conveyor line 2, and the conveying direction of the reflux conveyor line 3 is opposite to the conveying direction of the unloading conveyor line 2.

[0037] Reference Figure 1 , Figure 2 , Figure 4 , Figure 8 and Fig. 9The frame 5 is in the shape of a long table as a whole. 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 fixtures 6 holding the products on the two loading conveyor lines 1 need to be placed on the unloading conveyor line 2 after processing, the unloading conveyor line 2 needs to carry more fixtures 6, and the conveying space of the unloading conveyor line 2 needs to be larger than the conveying space 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 1 2 is located between the two front feeding belts 11 and the two rear feeding belts 13. The two front feeding belts 11, the two middle feeding belts 12 and the two rear feeding belts 13 are sequentially connected along the length direction of the frame 5 to form a feeding conveying channel. The two front feeding belts 11 are connected to form the front section of the feeding conveying channel, and the two rear feeding belts 13 are connected to form the rear section of the feeding conveying channel. The two front feeding belts 11, the two middle feeding belts 12 and the two rear feeding belts 13 are respectively controlled by different feeding belt driving motors 52 to run in the same direction. Long side guards 53 are respectively arranged on both sides of all the feeding belts. The side guards 53 on both sides are fixed on the frame 5 and the two and all the feeding belts form the above-mentioned feeding conveying channel.

[0038] Reference Figure 1 and Figure 2 The number of the laser welding groups 88 is preferably two groups, the two feeding conveyor lines 1 are located between the two groups of laser welding groups 88, the cache table 51, the cache pushing device 4 and the loading and unloading device 7 are all arranged one by one with the laser welding machine 8. In this embodiment, when the number of the laser welding machines 8 is sixteen in total, every eight laser welding machines 8 form a row to form a group of laser welding groups 88, the number of the cache tables 51, the cache pushing device 4 and the loading and unloading device 7 are also the same as the laser welding machines 8, and all the cache tables 51 are fixedly connected to the frame 5.

[0039] Reference Figure 2 , Figure 4 , Figure 6 , Figure 7 , Figure 8 and Fig. 9Each cache 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 cache platform 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 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 cache platform 51 to form a cache 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. The blocking member 411 and the blocking block 421 are both located directly above the feeding conveyor line 1, and the pushing block 431 is located between the blocking block 421 and the two blocking members 411.

[0040] Reference Figure 2 , Figure 4 , Figure 8 and Fig. 9 , the unloading conveyor line 2 is used to convey the fixture 6 holding the product to be processed, the unloading conveyor line 2 includes a plurality of conveyor belts, and the present invention preferably has three conveyor belts, the three conveyor belts are 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 connected to form a unloading conveying 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 unloading conveying channel, and the rear conveyor belt 23 constitutes the rear end of the unloading conveying channel, the front conveyor belt 21, the middle conveyor belt 22 and the rear conveyor belt 23 are respectively controlled by different unloading drive motors to run in the same direction, in order to prevent the fixture 6 holding the processed product from escaping from the unloading conveyor line 2, a U-shaped conveying baffle 231 is provided at the tail of the rear conveyor belt 23, and the conveying baffle 231 is fixed to the tail of the frame 5.

[0041] Reference Figure 2 , Figure 4 , Figure 5 , Figure 8 and Fig. 9The return conveyor line 3 is located directly below the unloading conveyor line 2. The return conveyor line 3 includes multiple return belts. The present invention preferably has three return belts. The three return belts are 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 connected 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 clamp 6 from detaching from the return conveyor line 3, a U-shaped return baffle 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] Reference Figure 1 , Fig.11 and Fig.12 Each of the loading and unloading devices 7 includes a vertical slider 71, a vertically movable linear module 72, a longitudinal slider 78, a translational linear module 73, a rotating frame 75, a rotating cylinder 74, two lifting cylinders 77, two clamping cylinders 76 and two pairs of clamping claws 761. The vertically movable linear module 72 is fixed in the connecting frame 54 of the frame 5. The vertical slider 71 is vertically slidably arranged on the vertically movable linear module 72. The translational linear module 73 is fixed on the vertical slider 71. The longitudinal slider 78 is longitudinally slidably arranged on the translational linear module 73. The rotating cylinder 74 is fixed to the bottom of the longitudinal sliding block 78, the rotating frame 75 is located below the longitudinal sliding block 78, the rotating frame 75 is located at the rotating output end of the rotating cylinder 74, the rotating frame 75 is rotatably connected with the longitudinal sliding block 78 through the rotating cylinder 74, the two lifting cylinders 77 are fixed to the two ends of the rotating frame 75, the two clamping cylinders 76 are slidably arranged on the sides of the two lifting cylinders 77 in a one-to-one correspondence, and the 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 move vertically at the two ends of the rotating frame 75.

[0043] Reference Figure 1 , Fig.13 , Fig.14 , Fig.15 and Fig.16Each laser welding machine 8 is provided with a laser welding platform device 86, which includes a fixed frame 81, a rotating plate 821, a workbench 84, a limit block 841, a clamping 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 supported on the turntable 831, the limit block 841 and the clamping member 851 are arranged on the workbench 84 at intervals, the limit block 841 is fixedly installed on the workbench 84, the clamping member 851 is slidably arranged on the workbench 84 and together with the limit block 841 ensures the stability of the fixture 6 holding the product during the working process.

[0044] Reference Fig.13 The fixing frame 81 is in the shape of a U as a whole and is fixed in the radium welding machine 8. The tops of the two ends of the fixing frame 81 are respectively connected to a photoelectric switch 812 through a fixing plate 811. The workbench 84 is located between the two photoelectric switches 812. The rotating plate 821 is in the shape of a rectangle. The rotating plate 821 is located in the fixing frame 81 and its two opposite ends (i.e., the left and right ends) are respectively connected to the two opposite side walls of the fixing frame 81 in a one-to-one corresponding rotation. A horizontal rotating motor 82 is fixed on the outer wall of the fixing frame 81. The output shaft of the horizontal rotating motor 82 passes through the side wall of the fixing frame 81 and is connected to the rotating plate 82. The rotating plate 821 is fixedly connected, the horizontal rotating motor 82 can directly control the rotating plate 821 to rotate in the fixed frame 81, the rotating plate 821 is connected with a vertical rotating driving source, and the vertical rotating driving source is specifically a vertical rotating motor 83, the vertical rotating motor 83 and the rotating disk 831 are respectively located on two opposite surfaces of the rotating plate 821, the vertical rotating motor 83 is fixedly connected to the rotating plate 821, the output shaft of the vertical rotating motor 83 passes through the rotating plate 821 and is fixedly connected to the rotating disk 831, and the vertical rotating motor 83 can control the rotating disk 831 to rotate vertically on the rotating plate 821.

[0045] Reference Fig.13 , Fig.14 and Fig.15The workbench 84 is fixed on the top of the turntable 831, and the position corresponding to the workbench 84 and the pressing piece 851 extends outward to form an extension part 843, on which two slide rails 842 are fixed at intervals, and a positioning drive source is also fixedly installed on the extension part 843, and the positioning drive source is preferably a positioning cylinder 85. The limit block 841 and the pressing piece 851 are respectively located at the two opposite corners of the fixture 6 holding the product, wherein the limit block 841 is L-shaped and matches the corresponding corner of the fixture 6 holding the product, and the pressing piece 851 includes a connecting block 852 and a pressing block 853, and the bottom of the connecting block 852 is slidably connected to the two slide rails 842, so as to The connecting block 852 is slidably set on the workbench 84, and one end of the connecting block 852 close to the limit block 841 is fixed to the output end of the positioning cylinder 85. A V-shaped opening is provided at the edge of the connecting block 852 close to the limit block 841, and the clamping block 853 is V-shaped. The corner of the clamping 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 clamping block 853 press against the clamp 6 that clamps the product. Specifically, the bottoms of the two ends of the clamping block 853 are respectively rotatably connected with clamping wheels 854 and form limit steps for limiting and matching with the protrusions 61 on the side of the clamp 6. The two clamping wheels 854 roll and press against the clamp 6 that clamps the product.

[0046] Reference Figures 1 to 16 The efficient parallel watch buckle laser welding automatic production line of the present invention has a total of 16 welding stations, and the working principles of each welding station are basically the same. Now, the working principle of one welding station is taken as an example for explanation:

[0047] The loading operator clamps the product in the limit groove 62 of the clamp 6, and then places the clamp 6 holding the product to be processed at the head of the loading conveying channel of the loading conveying line 1. The clamp 6 holding the product to be processed moves forward with the operation of each loading belt;

[0048] When the multiple fixtures 6 clamping the products to be processed move to the three blocking cylinders, the second blocking cylinder 42 drives the blocking block 421 to move into the feeding conveying channel to block the first fixture 6 at the front end. At this time, the two first blocking cylinders 41 respectively drive their respective blocking members 411 to move into the feeding conveying channel, and the two blocking members 411 block the two rear fixtures 6 one by one.

[0049] The pushing cylinder 43 drives the pushing block 431 to slide and push the clamp 6 blocked by the blocking block 421 from the feeding conveying channel to the buffering table 51;

[0050] The up-and-down moving linear module 72 drives the vertical moving slider 71 to move vertically, and the translational 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 translational linear module 73. The translational linear module 73 drives the longitudinal moving slider 78 and the rotating frame 75, the two lifting cylinders 77 and the two clamping cylinders 76 to move longitudinally together until the front end clamping claw 761 is located 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 claw 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 radium welding machine 8;

[0051] The positioning cylinder 85 drives the connecting block 852 and the clamping block 853 to slide forward along the two slide rails 842 until the two ends of the clamping block 853 are close to the protrusions 61 on both sides of the clamp 6. At this time, the two clamping wheels 854 are respectively located under the corresponding protrusions 61, the limit blocks 841 and the clamping blocks 853 are respectively located at the two opposite corners of the clamp 6 and clamp the clamp 6 together, and the vertical rotation motor 83 drives the turntable 831 and the workbench 84, the limit blocks 841, the clamp 6 holding the product, the clamping piece 851 and the positioning cylinder 85 The positioning cylinder 85 rotates a certain angle along the vertical axis (i.e., Z axis), and at the same time, the horizontal rotary motor 82 drives the rotating plate 821 to rotate. The vertical rotary motor 83, the turntable 831, the workbench 84, the limit block 841, the fixture 6 holding the product, the clamping member 851 and the positioning cylinder 85 rotate a certain angle along the horizontal axis (i.e., X axis) along with the rotating plate 821, and the fixture 6 holding the product is adjusted to a suitable angle. The welding head 87 of the radium welder 8 moves to the part of the product that needs to be welded, and the product clamped by the fixture 6 is welded;

[0052] After welding is completed, the translation linear module 73 controls the rotating frame 75 and the various components on the rotating frame 75 to move to one side of the unloading conveyor line 2, and the rotating cylinder 74 controls the rotating frame 75 to rotate 180 degrees, so that the positions of the two pairs of clamps 761 are alternated, so that the rear pair of clamps 761 can place the clamp 6 holding the welded product in the unloading conveying channel of the unloading conveyor line 2, and at the same time, the front pair of clamps 761 clamp the clamp 6 holding the product to be welded on the buffer table 51;

[0053] When the fixture 6 clamped with the processed product moves to the tail of the unloading conveyor line 2, the conveying blocking bar 231 blocks each fixture 6 clamped with the processed product, and the unloading operator takes down the fixture 6 clamped with 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 opposite direction with the operation of each reflow belt until it moves to the head of the reflow conveyor line 3. The reflow baffle 311 blocks the empty fixture from continuing to move. The loading operator takes down the empty fixture and clamps the product to be welded, and puts it on the loading conveyor line 1 again, and the cycle continues.

[0055] The efficient parallel watch buckle laser welding automated production line of the present invention separates the loading and unloading conveyor lines to ensure smooth loading and unloading conveyance. At the same time, the buffer pushing device 4 is used to push the fixture 6 holding the product to be welded on the loading conveyor line 1 to the buffer table 51 to wait for processing, and then the loading and unloading device 7 is used to transfer the fixture 6 holding the product to be welded on the buffer table 51 to the corresponding laser welding machine 8 for welding. After welding is completed, the loading and unloading device 7 places the fixture 6 holding the welded product on the unloading conveyor line 2 for output, and automatically transports the empty fixture back from the reflux conveyor line 3, thereby reducing labor costs. The various parts work together to improve the production efficiency of the welding process and realize efficient automated welding.

[0056] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of protection of the present invention. Therefore, equivalent changes made within the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. An efficient parallel buckle laser welding automatic production line, including a frame, characterized in that: The frame is provided with a loading conveyor line, a unloading conveyor line, a laser welding group and a reflux 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 a plurality of laser welding machines and arranged along the length direction of the frame. A cache table is provided between each laser welding machine and the loading conveyor line. A cache pushing device is provided on each cache table. A loading and unloading device is provided above each cache table and the unloading conveyor line. The reflux conveyor line passes through the frame and is located below the unloading conveyor line. The conveying direction of the reflux conveyor line is opposite to that of the unloading conveyor line.

2. The efficient parallel buckle laser welding automatic production line according to claim 1 is characterized in that: The head of the return conveyor line is provided with a return baffle for preventing the fixture from detaching from the return conveyor line. The return conveyor line includes a plurality of return belts, all of which are arranged along the length direction of the frame and connected to form a return channel.

3. The efficient parallel buckle laser welding automated production line according to claim 1 is characterized in that: There are two loading conveyor lines, and the unloading conveyor line is located between the two loading conveyor lines. There are two laser welding groups, and the two loading conveyor lines are located between the two laser welding groups.

4. The efficient parallel buckle laser welding automated production line according to claim 1 is characterized in that: The tail of the unloading conveyor line is provided with a conveying baffle bar for preventing the fixture from detaching from the unloading conveyor line. The unloading conveyor line includes a plurality of conveying belts, all of which are arranged along the length direction of the frame and connected to form a unloading conveying channel.

5. The efficient parallel buckle laser welding automatic production line according to claim 1 is characterized in that: The width of the loading conveyor line is smaller than that of the unloading conveyor line. The loading conveyor line comprises a plurality of loading belts. All of the loading belts are arranged along the length direction of the frame and are connected to form a loading conveying channel.

6. The efficient parallel buckle laser welding automatic production line according to claim 1 is characterized in that: The cache 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 cache table to form a cache space. The pushing cylinder is fixed on the cache table. 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.

7. The efficient parallel buckle laser welding automatic production line according to claim 1 is characterized in that: Each of the laser welding machines is provided with a laser welding platform device, which includes a fixed frame, a rotating plate is horizontally rotatably connected to the fixed frame, a turntable is vertically rotatably connected to the rotating plate, a workbench is fixedly supported on the turntable, and limit blocks and clamping members are spaced apart on the workbench. The limit blocks are fixedly mounted on the workbench, and the clamping member is slidably arranged on the workbench and together with the limit blocks ensures the stability of the fixture holding the product during the working process.

8. The efficient parallel buckle laser welding automatic production line according to claim 7 is characterized in that: The limit block and the clamping piece are respectively located at two opposite corners of the clamp that clamps the product. The clamping piece includes a connecting block and a clamping block. The connecting block is slidably arranged on the workbench. The clamping block is V-shaped and its two ends press against the clamp that clamps the product. The corners of the clamping block are hinged to the connecting block.

9. The efficient parallel buckle laser welding automatic production line according to claim 8 is characterized in that: The bottoms of the two ends of the clamping block are rotatably connected to clamping wheels and form limiting steps for limiting and matching with the protrusions on the sides of the clamp. The two clamping wheels roll and press the clamp holding the product.

10. The efficient parallel buckle laser welding automatic production line according to claim 1 is characterized in that: The loading and unloading device includes a vertical slider, a longitudinal slider, a rotating frame and two pairs of clamps. The slider is vertically movable in the connecting frame of the frame, the longitudinal slider is longitudinally slidably arranged on the translation linear module of the vertical slider, the rotating frame is rotatably arranged below the longitudinal slider, and the two pairs of clamps are respectively vertically movable at the two ends of the rotating frame.

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