Laser soldering machine and operating method thereof

Abstract

The present invention relates to a laser soldering machine and an operating method thereof, comprising an automatic board placing machine, an automatic tin ring forming machine, a laser welding machine, an automatic PCB pressing block unloading machine, an automatic optical inspection machine, and an automatic board collecting machine, which are connected by an automatic conveyor to form an automated production line. The machine has a simple structure and is easy to operate, which reduces the cost of the entire soldering process and improves stability and work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of laser equipment, in particular to a laser soldering machine and an operating method thereof. Background Art

[0002] At present, the laser soldering on the market mainly includes laser tin wire welding, laser welding piece welding, laser solder paste welding and laser spray ball welding. Laser tin wire welding has large differences in the amount of tin and is prone to a large number of tin beads during the welding process. The quality after welding is difficult to guarantee and the efficiency is low; the cost of laser welding piece welding is high, about 10 times that of tin wire welding; laser solder paste welding, when using this method, is prone to a large number of tin beads (ordinary solder paste), which has an adverse effect on the reliability and stability of the product. If laser solder paste is used, the production cost will be greatly increased; spray ball welding is often used on products with low pin height and small pad area, while it is difficult to control the welding quality for products with large pad area and high pins. Summary of the invention

[0003] In view of the shortcomings in the above-mentioned existing production technology, the applicant provides a laser soldering machine and an operating method thereof, which on the one hand solves the problem of high cost of existing automatic welding, and on the other hand solves the problem of poor control of welding quality, thereby reducing the cost of the entire soldering process, improving stability, and improving work efficiency.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A laser soldering machine comprises an automatic board placing machine, the output end of which is connected to an automatic tin ring forming machine via a conveyor, and the output end of the automatic tin ring forming machine is sequentially connected to a laser welding machine, an automatic PCB clamping block unloading machine, an automatic optical inspection machine, an automatic conveyor and an automatic board collecting machine.

[0006] Its further technical solution is:

[0007] The structure of the automatic tin ring forming machine is as follows: it includes a first frame, the top surface of the first frame is covered with a first protective cover shell, a first industrial computer display is installed on the side of one end of the first protective cover shell through a first bracket, and a first controller is installed on the front of the other end of the first protective cover shell; a first transmission positioning track connected to a conveyor is installed on the top workbench of the first frame located in the first protective cover shell, and a first actuator is installed above the first transmission positioning track.

[0008] The structure of the first actuator is as follows: it includes a first fixed base plate installed on the first transmission positioning track, symmetrical first X-axis assemblies are installed on both sides of the first fixed base plate, a first Y-axis assembly is installed above the two first X-axis assemblies, a first Z-axis assembly is installed on the first Y-axis assembly, and a first CCD assembly and an automatic tin-winding ring structure are installed on the first Z-axis assembly.

[0009] The structure of the laser welding machine is as follows: it includes a second frame, the top surface of the second frame is covered with a second protective cover shell, a second industrial computer display is installed on the side of one end of the second protective cover shell through a second bracket, and a second controller is installed on the front of the other end of the second protective cover shell; a second transmission positioning track connected with the automatic tin ring forming machine is installed on the top workbench of the second frame located in the second protective cover shell, and a second actuator is installed above the second transmission positioning track.

[0010] Rectangular holes are formed at the front end and both sides of the first protective cover shell and the second protective cover shell.

[0011] The structure of the second actuator is as follows: it includes a second fixed base plate installed on the second transmission positioning rail, symmetrical second X-axis assemblies are installed on both sides of the second fixed base plate, a second Y-axis assembly is installed on the second X-axis assembly, a second Z-axis assembly is installed on the second Y-axis assembly, and a second CCD assembly and a laser welding galvanometer are installed on the second Z-axis assembly.

[0012] The material plate is placed in the automatic plate placing machine, and the material plate is sequentially processed through a conveyor, an automatic tin ring forming machine, a laser welding machine, an automatic PCB clamping block unloading machine, an automatic optical inspection machine, an automatic conveyor and an automatic plate collecting machine.

[0013] The installation structure of the material plate is as follows: it includes two support beams arranged at intervals, the material plate is installed above the support beams, the front and rear middle bottom surfaces of the material plate are symmetrically equipped with pick-and-release buckles through fasteners, a plurality of rectangular grooves are arranged on the upper plane of the material plate, each rectangular groove is equipped with a plurality of positioning pins, and a circular hole is correspondingly opened next to each positioning pin on the rectangular groove, a product is installed in the circular hole, the product is provided with a boss structure, and a PCB clamping block is installed at the boss structure.

[0014] A method for operating a laser soldering machine includes the following steps:

[0015] Step 1: Prepare the material board, place the products to be welded and the PCB clamping block on the material board;

[0016] Step 2: The material sheets are stacked from top to bottom on the automatic sheet placing machine, and the placement area is pre-inspected after the whole sheet is automatically loaded;

[0017] Step 3: The conveyor conveys the sheet material to the first transmission positioning track of the automatic tin ring forming machine one by one. The first CCD component scans the products one by one. The tin wire is sent into the automatic tin ring winding structure for forming and cutting. Then the formed tin ring is placed on the PIN needle of the product. All products on the sheet material are processed one by one using the above method.

[0018] Step 4: The whole sheet of product with the tin ring is transported to the second transport and positioning track of the laser welding machine through the first transmission and positioning track, and the sheet is transported to the welding area. The second CCD component scans the products one by one, and the laser welding galvanometer is used to emit laser to weld the welding position. Each welding point takes between 0.5 and 2 seconds. All products on the sheet are welded one by one using the above method.

[0019] Step 5: convey the plate welded in the fourth step to the automatic PCB pressing block unloading machine, and unload the PCB pressing block through the automatic PCB pressing block unloading machine;

[0020] Step 6: Transport the sheet from which the PCB clamping block has been unloaded to the automatic optical inspection machine, and inspect the processed products one by one to check whether the products are qualified;

[0021] Step 7: Transport the inspected sheet to the automatic sheet collecting machine through the automatic conveyor;

[0022] Step 8: Complete the assignment.

[0023] The beneficial effects of the present invention are as follows:

[0024] The present invention has a compact and reasonable structure and is easy to operate. Through an automated production line consisting of a board placing machine, a conveyor, an automatic tin ring forming machine, a laser welding machine, an automatic PCB clamping block unloading machine, an automatic optical inspection machine, and an automatic board collecting machine, the entire soldering process can be completed efficiently, while reducing costs and improving stability and work efficiency.

[0025] The invention can not only perform welding at room temperature, but also perform welding under special conditions, and each device is simple.

[0026] The invention adopts weldable refractory materials and can weld heterogeneous materials with good effect.

[0027] The invention can perform micro welding, the laser beam obtains a very small light spot, and can be accurately positioned, and can be used for soldering of micro and small workpieces in mass automated production.

[0028] The plate placing machine of the present invention performs a preliminary inspection of the placing area after the whole plate is automatically loaded, thereby ensuring the accuracy of the position and improving the stability and efficiency of product welding.

[0029] The automatic tin ring forming machine of the present invention can place the manufactured tin ring on the PIN needle, so that the position of the tin ring entering the next process is reliably prepared, the stability and efficiency of product welding are improved, and the energy consumption is reduced.

[0030] The laser machine of the present invention can locate the welding position after the material reaches the laser welding area, and then use the galvanometer to emit laser to weld the welding position, thereby improving the stability of the product and expanding the application range of the laser machine.

[0031] The PCB pressing block disassembly machine of the present invention realizes automatic disassembly of the PCB pressing block, thereby improving the efficiency of the production line.

[0032] The automatic optical inspection machine of the present invention can automatically detect whether the welding of products is qualified, thereby improving production efficiency and stability. Once the defective rate is high, it can be discovered and improved in time.

[0033] The plate collecting machine of the present invention realizes the unloading of products, the collection and recycling of material plates in the last link of the automated production line, thereby improving production efficiency and reducing production costs.

[0034] The conveyor of the present invention realizes fully automated transmission of materials and material plates, saves manpower, reduces production costs, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the present invention.

[0036] Figure 2 It is a structural schematic diagram of the automatic tin ring forming machine of the present invention.

[0037] Figure 3 It is a structural schematic diagram of the actuator of the automatic tin ring forming machine of the present invention.

[0038] Figure 4 It is a structural schematic diagram of the laser welding machine of the present invention.

[0039] Figure 5 It is a structural schematic diagram of the actuator of the laser welding machine of the present invention.

[0040] Figure 6 It is a schematic diagram of the installation structure of the material plate and the PCB pressing block of the present invention.

[0041] Among them: 1. Automatic board placing machine; 2. Conveyor; 3. Automatic tin ring forming machine; 4. Laser welding machine; 5. Automatic PCB clamping block unloading machine; 6. Automatic optical inspection machine; 7. Automatic conveyor; 8. Automatic board collecting machine; 11. Material plate; 12. Support beam; 13. Circular hole; 14. Positioning pin; 15. PCB clamping block; 16. Rectangular sink;.

[0042] 301, first rack; 302, first Y-axis assembly; 303, automatic tin ring winding structure; 304, first controller; 305, first protective cover shell; 306, first bracket; 307, first industrial computer display; 308, first actuator; 309, first X-axis assembly; 312, first Z-axis assembly; 315, first CCD assembly; 318, first fixed bottom plate; 320, first transmission positioning track;

[0043] 401, first rack; 402, second Y-axis assembly; 403, laser welding galvanometer; 404, second controller; 405, second protective cover shell; 406, second bracket; 407, second industrial computer display; 408, second actuator; 409, second X-axis assembly; 412, second Z-axis assembly; 415, second CCD assembly; 418, second fixed base plate; 420, second transmission positioning track. DETAILED DESCRIPTION

[0044] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0045] like Figure 1-Figure 6 As shown, the laser soldering machine of this embodiment includes an automatic board placing machine 1, the output end of the automatic board placing machine 1 is connected to an automatic tin ring forming machine 3 through a conveyor 2, and the output end of the automatic tin ring forming machine 3 is sequentially connected to a laser welding machine 4, an automatic PCB clamping block unloading machine 5, an automatic optical inspection machine 6, an automatic conveyor 7 and an automatic board collecting machine 8.

[0046] The structure of the automatic tin ring forming machine 3 is as follows: it includes a first frame 301, the top surface of the first frame 301 is covered with a first protective cover shell 305, a first industrial computer display 307 is installed on the side of one end of the first protective cover shell 305 through a first bracket 306, and a first controller 304 is installed on the front of the other end of the first protective cover shell 305; a first transmission positioning rail 320 connected to the conveyor 2 is installed on the top workbench of the first frame 301 located in the first protective cover shell 305, and a first actuator 308 is installed above the first transmission positioning rail 320.

[0047] The structure of the first actuator 308 is as follows: it includes a first fixed base plate 318 installed on the first transmission positioning rail 320, symmetrical first X-axis assemblies 309 are installed on both sides of the first fixed base plate 318, a first Y-axis assembly 302 is installed above the two first X-axis assemblies 309, a first Z-axis assembly 312 is installed on the first Y-axis assembly 302, and a first CCD assembly 315 and an automatic tin ring winding structure 303 are installed on the first Z-axis assembly 312.

[0048] The structure of the laser welding machine 4 is as follows: it includes a second frame 401, the top surface of the second frame 401 is covered with a second protective cover shell 405, a second industrial computer display 407 is installed on the side of one end of the second protective cover shell 405 through a second bracket 406, and a second controller 404 is installed on the front of the other end of the second protective cover shell 405; a second transmission positioning rail 420 connected to the automatic tin ring forming machine 3 is installed on the top workbench of the second frame 401 located in the second protective cover shell 405, and a second actuator 408 is installed above the second transmission positioning rail 420.

[0049] Rectangular holes are formed at the front end and both sides of the first protective cover shell 305 and the second protective cover shell 405 .

[0050] The structure of the second actuator 408 is: it includes a second fixed base plate 418 installed on the second transmission positioning rail 420, and symmetrical second X-axis assemblies 409 are installed on both sides of the second fixed base plate 418, the second Y-axis assembly 402 is installed on the second X-axis assembly 409, the second Z-axis assembly 412 is installed on the second Y-axis assembly 402, and the second CCD assembly 415 and the laser welding galvanometer 403 are installed on the second Z-axis assembly 412.

[0051] The material plate 11 is placed in the automatic plate placing machine 1, and the material plate 11 passes through the conveyor 2, the automatic tin ring forming machine 3, the laser welding machine 4, the automatic PCB clamping block unloading machine 5, the automatic optical inspection machine 6, the automatic conveyor 7 and the automatic plate collecting machine 8 in sequence for full-automatic processing.

[0052] The installation structure of the material plate 11 is as follows: it includes two support beams 12 arranged at intervals, the material plate 11 is installed above the support beams 12, and the pick-and-place buckles 10 are symmetrically installed on the front and rear middle bottom surfaces of the material plate 11 through fasteners. A plurality of rectangular grooves 16 are arranged on the upper plane of the material plate 11, and each rectangular groove 16 is installed with a plurality of positioning pins 14. A circular hole 13 is correspondingly opened next to each positioning pin 14 on the rectangular groove 16, and a product is installed in the circular hole 13. The product is provided with a boss structure, and a PCB clamping block 15 is installed at the boss structure.

[0053] The operating method of the laser soldering machine of this embodiment includes the following operating steps:

[0054] Step 1: Prepare a material plate 11, and place the product to be welded and a PCB pressing block 15 on the material plate 11;

[0055] Step 2: The material plates 11 are stacked from top to bottom on the automatic plate placing machine 1, and the placement area is pre-detected after the whole plate is automatically loaded;

[0056] Step 3: The conveyor 2 transfers the sheet 11 to the first transmission positioning track 320 of the automatic tin ring forming machine 3 one by one, the first CCD component 315 scans the products one by one, the tin wire is sent into the automatic tin ring winding structure 303 for forming and cutting, and then the formed tin ring is placed on the PIN needle of the product, and all the products on the sheet 11 are processed one by one using the above method;

[0057] Step 4: The whole sheet 11 of the product with the tin ring is transported to the second transport positioning track 420 of the laser welding machine 4 through the first transport positioning track 320, and the sheet 11 is transported to the welding area. The second CCD component 415 scans the products one by one, and the laser welding galvanometer 403 is used to emit laser to weld the welding position. Each welding point takes between 0.5 and 2 seconds. All products on the sheet 11 are welded one by one using the above method.

[0058] Step 5: conveying the material plate 11 welded in the fourth step to the automatic PCB pressing block unloading machine 5, and unloading the PCB pressing block 15 through the automatic PCB pressing block unloading machine 5;

[0059] Step 6: The material plate 11 from which the PCB pressing block 15 has been unloaded is transported to the automatic optical inspection machine 6, and the processed products are inspected one by one to check whether the products are qualified;

[0060] Step 7: transport the inspected sheet 11 to the automatic sheet collecting machine 8 via the automatic conveyor 7;

[0061] Step 8: Complete the assignment.

[0062] The whole machine is fully automated, which saves labor costs and improves stability and work efficiency. The invention has a wide range of applications and high precision, and is very consistent with the development needs of modern industry.

[0063] The PIN needle is a metal material used in the connector to complete the conduction (transmission) of electricity (signals).

[0064] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A laser soldering machine, characterized in that: The invention comprises an automatic board placing machine (1), wherein the output end of the automatic board placing machine (1) is connected to an automatic tin ring forming machine (3) via a conveyor (2), and the output end of the automatic tin ring forming machine (3) is sequentially connected to a laser welding machine (4), an automatic PCB pressing block unloading machine (5), an automatic optical inspection machine (6), an automatic conveyor (7) and an automatic board collecting machine (8); the structure of the automatic tin ring forming machine (3) is as follows: it comprises a first frame (301), the top surface of the first frame (301) is covered with a first protective cover shell (305), a first industrial computer display (307) is installed on the side surface of one end of the first protective cover shell (305) via a first bracket (306), and a first controller (304) is installed at the front of the other end of the first protective cover shell (305); a first protective cover shell (301) is provided on the first protective cover shell (301 ... 5) is installed on the top workbench of the first frame (301) in the conveyor (2), and a first transmission positioning track (320) connected to the conveyor (2) is installed, and a first actuator (308) is installed above the first transmission positioning track (320); the structure of the first actuator (308) is as follows: it includes a first fixed base plate (318) installed on the first transmission positioning track (320), symmetrical first X-axis components (309) are installed on both sides of the first fixed base plate (318), a first Y-axis component (302) is installed above the two first X-axis components (309), a first Z-axis component (312) is installed on the first Y-axis component (302), and a first CCD component (315) and an automatic tin ring winding structure (303) are installed on the first Z-axis component (312); The steps are as follows: Step 1: prepare a material plate (11), and place the product to be welded and a PCB pressing block (15) on the material plate (11); Step 2: The material plates (11) are stacked from top to bottom on the automatic plate placing machine (1), and the placement area is pre-inspected after the whole plate is automatically loaded; Step 3: The conveyor (2) transports the material plate (11) one by one to the first transmission positioning track (320) of the automatic tin ring forming machine (3), the first CCD component (315) scans the products one by one, the tin wire is sent into the automatic tin ring winding structure (303) for forming and cutting, and then the formed tin ring is placed on the PIN pin of the product, and all the products on the material plate (11) are processed one by one using the above method; Step 4: The entire sheet (11) of the product having the tin ring set thereon is transported to the second transport positioning track (420) of the laser welding machine (4) via the first transport positioning track (320), the sheet (11) is transported to the welding area, the second CCD component (415) scans the products one by one, and the laser welding galvanometer (403) emits laser to weld the welding position, and each welding point takes between 0.5 and 2 seconds; all the products on the sheet (11) are welded one by one using the above method; Step 5: conveying the material plate (11) welded in the fourth step to the automatic PCB pressing block unloading machine (5), and unloading the PCB pressing block (15) through the automatic PCB pressing block unloading machine (5); Step 6: conveying the material plate (11) from which the PCB pressing block (15) has been unloaded to the automatic optical inspection machine (6), and inspecting the processed products one by one to check whether the products are qualified; Step 7: transporting the inspected material plate (11) to the automatic plate collecting machine (8) via the automatic conveyor (7); Step 8: Complete the assignment.

2. A laser soldering machine as claimed in claim 1, characterized in that: The structure of the laser welding machine (4) is as follows: it comprises a second frame (401), the top surface of the second frame (401) is covered with a second protective cover shell (405), a second industrial computer display (407) is installed on the side surface of one end of the second protective cover shell (405) through a second bracket (406), and a second controller (404) is installed on the front of the other end of the second protective cover shell (405); a second transmission positioning track (420) connected to the automatic tin ring forming machine (3) is installed on the top surface workbench of the second frame (401) located in the second protective cover shell (405), and a second actuator (408) is installed above the second transmission positioning track (420).

3. A laser soldering machine as claimed in claim 1 or 2, characterized in that: Rectangular holes are provided at the front ends and both sides of the first protective cover shell (305) and the second protective cover shell (405).

4. A laser soldering machine as claimed in claim 2, characterized in that: The structure of the second actuator (408) is as follows: it includes a second fixed base plate (418) installed on a second transmission positioning track (420), symmetrical second X-axis components (409) are installed on both sides of the second fixed base plate (418), a second Y-axis component (402) is installed on the second X-axis component (409), a second Z-axis component (412) is installed on the second Y-axis component (402), and a second CCD component (415) and a laser welding galvanometer (403) are installed on the second Z-axis component (412).

5. A laser soldering machine as claimed in claim 1, characterized in that: A material plate (11) is placed in an automatic plate placing machine (1), and the material plate (11) is sequentially passed through a conveyor (2), an automatic tin ring forming machine (3), a laser welding machine (4), an automatic PCB pressing block unloading machine (5), an automatic optical inspection machine (6), an automatic conveyor (7), and an automatic plate collecting machine (8) for full-automatic processing.

6. A laser soldering machine as claimed in claim 5, characterized in that: The mounting structure of the material plate (11) comprises two support beams (12) arranged at intervals, the material plate (11) is mounted above the support beams (12), the front and rear middle bottom surfaces of the material plate (11) are symmetrically mounted with pick-and-place buckles (10) via fasteners, a plurality of rectangular recessed grooves (16) are arranged on the upper plane of the material plate (11), each rectangular recessed groove (16) is mounted with a plurality of positioning pins (14), a circular hole (13) is correspondingly opened next to each positioning pin (14) on the rectangular recessed groove (16), a product is mounted in the circular hole (13), the product is provided with a boss structure, and a PCB clamping block (15) is mounted on the boss structure.

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