A double silver spot welding machine and welding method

Abstract

The application discloses a double-silver-point welding machine and a welding method, which comprise a rack, a rotating disc and a protractor are arranged on the rack, a plurality of positioning tools are arranged on the rotating disc, a copper piece feeding mechanism, a silver point feeding mechanism, a detection mechanism, a welding mechanism, a test and material collecting mechanism are arranged on the rack, the welding mechanism comprises a fourth support, a first linear guide rail, a sliding plate, an eighth cylinder, a second linear guide rail, a positive electrode and a negative electrode motor, a ninth cylinder for driving the first electrode to slide along the second linear guide rail, and a tenth cylinder for driving the negative electrode to slide along the second linear guide rail, and a temperature sensor for detecting the temperature change of the copper piece is further arranged. Advantages: the double-silver-point welding of the copper piece can be realized, the temperature change and consistency during the welding of the two silver points are observed by arranging the temperature sensor on the welding mechanism, and the inconsistent type of the temperature change during the double-silver-point welding is overcome, so that the double silver points can be quickly and accurately welded on the copper piece.

Description

Technical Field

[0001] This invention relates to the field of silver spot welding mechanisms, specifically to a double silver spot welding machine and welding method. Background Technology

[0002] Silver spot welding involves placing silver spots on a metal part and then using an electric current to heat the metal part, causing the silver spots to melt. Existing silver spot welding machines are not suitable for double silver spot welding on a metal part because different silver spots have temperature differences, and the rate of temperature transfer varies. If temperature changes cannot be detected, the two silver spots may not melt simultaneously.

[0003] Therefore, it is necessary to provide a double silver spot welding machine and welding method. Summary of the Invention

[0004] The present invention provides a double silver spot welding machine and welding method, which effectively solves the problem that existing silver spot welding machines cannot perform double silver spot welding.

[0005] The technical solution adopted in this invention is:

[0006] A double silver spot welding machine includes a frame, on which a turntable and an indexing device for driving the turntable to rotate are mounted. The turntable has several positioning fixtures arranged circumferentially. The frame is equipped with a copper part feeding mechanism for feeding copper parts, a silver spot feeding mechanism for feeding silver spots, a detection mechanism for pre-welding inspection, a welding mechanism for welding the silver spots and copper parts, and a test receiving mechanism for performing thrust tests on the welded products and collecting them. The welding mechanism includes a fourth support mounted on the frame and a... The frame includes a first linear guide rail, a slide plate slidably mounted on the first linear guide rail, an eighth cylinder fixedly mounted on the fourth bracket for driving the slide plate to slide along the first linear guide rail, a second linear guide rail mounted on the slide plate and perpendicular to the first linear guide rail, a positive electrode and a negative electrode slidably mounted on the second linear guide rail, a ninth cylinder fixedly mounted on the slide plate for driving the positive electrode to slide along the second linear guide rail, and a tenth cylinder for driving the negative electrode to slide along the second linear guide rail. It also includes a temperature sensor for detecting temperature changes in the copper component.

[0007] Furthermore, the positioning fixture includes a first linear module mounted on a turntable, a first plate fixedly mounted on the first linear module, and two fixture components mounted side-by-side on the first plate. Each fixture component includes a first slide cylinder mounted on the first plate, a first placement plate mounted at the output end of the first slide cylinder, a second slide cylinder mounted at one end of the first placement plate, and a push plate mounted at the output end of the second slide cylinder. A protrusion is provided at the other end of the first placement plate. The push plate and the protrusion respectively position the two ends of the product. A vertical plate is also provided on the output end of the first slide cylinder. A third linear guide rail is provided on the vertical plate. A first cylinder with its output end pointing downwards is slidably mounted on the third linear guide rail. A second cylinder is provided on the vertical plate to drive the first cylinder to slide along the third linear guide rail. A pressure block is provided on the output end of the first cylinder.

[0008] Furthermore, the copper part feeding mechanism includes a second and a third linear module mounted on the frame along the X direction, a first and a second material tray fixedly mounted at the output end of the second linear module, a centering component mounted on the frame, a transfer component mounted on the frame for transferring products from the first or second material tray to the centering component, and an adsorption component mounted on the third linear module for transferring products from the centering component to the positioning fixture. The centering component includes a mounting base mounted on the frame, positioning blocks on both sides of the mounting base, a third cylinder on the other two sides of the mounting base, a push block at the output end of the third cylinder, a fourth cylinder above the mounting base, and a pressure plate at the output end of the fourth cylinder. The mounting base is located between the second and third linear modules. The adsorption component includes a fifth cylinder mounted on the third linear module with its output end facing the mounting base, a sixth cylinder mounted at the output end of the fifth cylinder with its output end facing upwards, and a first suction plate mounted on the sixth cylinder.

[0009] Furthermore, the silver dot feeding mechanism includes a vibratory feeder mounted on the frame, a receiving assembly mounted on the frame for receiving silver dots from the vibratory feeder, a camera assembly mounted on the frame, a pressing cylinder mounted on the frame for pressing the silver dots in the receiving assembly, a first support mounted on the frame, a fifth linear module mounted on the first support, a twentieth cylinder mounted on the fifth linear module, a second suction plate mounted at the output end of the twentieth cylinder, a sixth linear module mounted on the first support, and a positioning component mounted at the output end of the sixth linear module.

[0010] Furthermore, the detection mechanism includes a first detection component, a second detection component, and a third detection component for detection from three different directions. The first and second detection components have identical structures and are symmetrically arranged. The third detection component is disposed between the first and second components. The first detection component includes a second bracket mounted on a frame, a No. 7 cylinder mounted on the second bracket, a first connecting shaft fixedly mounted on the output end of the No. 7 cylinder, and a first CCD camera mounted on the first connecting shaft. The first CCD camera is connected to the first connecting shaft via a clamp. The third detection component includes a third bracket mounted on a frame, a third connecting plate mounted on the third bracket, a third connecting shaft mounted on the third connecting plate, and a third CCD camera mounted on the third connecting shaft. The third CCD camera is connected to the third connecting shaft via a clamp.

[0011] Furthermore, the test receiving mechanism includes a No. 7 linear module mounted on the frame, a No. 4 CCD camera mounted on the output end of the No. 7 linear module, a No. 11 cylinder located to the side of the No. 4 CCD camera with its output end facing downwards, a No. 1 cylinder gripper fixedly mounted on the output end of the No. 11 cylinder, a thrust testing component mounted on the frame for thrust testing of the welded product, a rotary cylinder mounted on the frame with its output end facing upwards, a No. 12 cylinder horizontally mounted on the rotary cylinder, a No. 13 cylinder fixedly mounted on the output end of the No. 12 cylinder with its output end facing downwards, a No. 2 cylinder gripper fixedly mounted on the output end of the No. 13 cylinder, a discharge ramp mounted on the frame, and a receiving box located below the outlet of the discharge ramp. The thrust testing component includes a force tester mounted on the frame, a No. 30 cylinder mounted above the force tester, and a fixture mounted above the force tester.

[0012] A welding method using a double silver spot welding machine includes the following steps:

[0013] S1. Transfer the copper parts to the positioning fixture;

[0014] S2. Transfer the silver spot to the copper part of the positioning fixture;

[0015] S3. The silver spot on the copper part is detected. The No. 7 cylinder drives the first connecting shaft to move to one side of the turntable, so that the first CCD camera on the first connecting shaft corresponds to one side of the silver spot. When it is necessary to adjust the shooting angle of the first CCD camera and the third CCD camera, the first CCD camera and the third CCD camera are rotated by tightening and loosening the clamp to complete the shooting of the silver spot at the optimal angle.

[0016] S4. Welding the silver dots and copper parts: After the positioning fixture containing the copper parts and silver dots moves with the turntable to correspond with the welding machine mechanism, cylinder No. 8 drives the slide plate to move to one side of the turntable, so that the positive electrode and the negative electrode are respectively located on both sides of the copper part. Then, cylinders No. 9 and No. 10 drive the positive electrode and the negative electrode to abut against both sides of the copper part. Then, the current flows through the positive electrode, through the copper part, and into the negative electrode, causing the copper part to generate heat. The heat is used to melt the silver dots, thereby forming a weld between the silver dots and the copper part. During the welding process, the temperature sensor detects the temperature change of the copper part in real time to ensure the welding consistency of the two silver dots. Then, the testing and receiving mechanism detects whether the silver dots have completely melted and transfers the product formed by the complete melting and welding with the copper part out of the positioning fixture.

[0017] S5. Inspect the welded silver points and copper parts, and collect the inspected silver points and copper parts: After the welded silver points and copper parts are completed, they rotate with the turntable to correspond with the test receiving mechanism. The No. 7 linear module drives the No. 4 CCD camera to be positioned above the product silver point. After the silver point and copper part are welded, the No. 11 cylinder drives the No. 1 cylinder gripper to grab the product and transfer it to the fixture of the thrust test component. The No. 30 cylinder pushes the cylinder from one side of the product. When the thrust of the No. 30 cylinder is lower than the preset thrust for the complete melting of the silver point, the product will shift or deform, which means the weld is unqualified. Otherwise, the external weld is qualified. Then, the No. 2 cylinder gripper grabs the qualified product, and the rotary cylinder drives the No. 12 cylinder to rotate to the top of the unloading ramp. Then, the No. 2 cylinder gripper drops the product onto the unloading ramp and slides it into the receiving box.

[0018] Beneficial effects of the invention:

[0019] 1. It can achieve double silver spot welding of copper parts. By setting a temperature sensor on the welding mechanism, the temperature change and consistency of the two silver spots during welding are observed, which overcomes the inconsistency of temperature change during double silver spot welding, and enables the double silver spots to be welded onto the copper parts quickly and accurately.

[0020] 2. The over-thrust test component can test products with unqualified welding, ensuring the yield rate of the receiving box products. Attached Figure Description

[0021] Figure 1 This is an overall schematic diagram of a double silver spot welding machine provided for an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the positioning fixture for a double silver spot welding machine provided in an embodiment of this application.

[0023] Figure 3 This is a schematic diagram of the copper part feeding mechanism of the double silver spot welding machine provided in the embodiments of this application.

[0024] Figure 4This is a schematic diagram of the centering component of the copper part feeding mechanism of the double silver spot welding machine provided in the embodiments of this application.

[0025] Figure 5 This is a schematic diagram of the silver spot feeding mechanism of the double silver spot welding machine provided in the embodiments of this application.

[0026] Figure 6 This is a schematic diagram of the testing mechanism of the double silver spot welding machine provided in an embodiment of this application.

[0027] Figure 7 This is a top view of the detection mechanism and positioning fixture of the double silver spot welding machine provided in the embodiments of this application.

[0028] Figure 8 This is a schematic diagram of the welding mechanism of the double silver spot welding machine provided in the embodiments of this application.

[0029] Figure 9 This is a schematic diagram of the test receiving mechanism of the double silver spot welding machine provided in the embodiments of this application.

[0030] Figure 10 This is a schematic diagram of the thrust testing component of the test receiving mechanism of the double silver spot welding machine provided in the embodiments of this application.

[0031] The diagram is labeled as follows: 1. Frame; 2. Turntable; 3. Positioning fixture; 4. Copper part feeding mechanism; 5. Silver part feeding mechanism; 6. Inspection mechanism; 7. Welding mechanism; 8. Testing and receiving mechanism; 31. Linear module No. 1; 32. Plate No. 1; 33. Fixture assembly; 331. Slide cylinder No. 1; 332. Placement plate No. 1; 333. Slide cylinder No. 2; 334. Push plate; 335. Protrusion; 336. Vertical plate; 337. Linear guide rail No. 3; 338. Cylinder No. 1; 339. Cylinder No. 2; 330. Pressure block; 4 1. Linear module No. 2; 42. Linear module No. 3; 43. Tray No. 1; 44. Tray No. 2; 45. Centering assembly; 46. Transfer assembly; 47. Adsorption assembly; 451. Mounting base; 452. Positioning block; 453. Cylinder No. 3; 454. Push block; 455. Cylinder No. 4; 456. Pressure plate; 472. Cylinder No. 5; 473. Cylinder No. 6; 474. Suction plate No. 1; 51. Vibratory feeder; 52. Receiving assembly; 53. Camera assembly; 54. Clamping cylinder; 55. First bracket; 56. Linear module No. 5 Module; 57. Cylinder No. 20; 58. Suction Plate No. 2; 59. Linear Module No. 6; 50. Positioning Component; 61. First Detection Component; 62. Second Detection Component; 63. Third Detection Component; 611. Second Bracket; 612. Cylinder No. 7; 613. First Connecting Shaft; 614. First CCD Camera; 631. Third Bracket; 632. Third Connecting Plate; 633. Third Connecting Shaft; 634. Third CCD Camera; 70. Temperature Sensor; 71. Fourth Bracket; 72. Linear Guide Rail No. 1; 73. Slide Plate; 74. Cylinder No. 8; 75. Linear guide rail No. 2; 76. Positive electrode; 77. Negative electrode; 78. Cylinder No. 9; 79. Cylinder No. 10; 81. Linear module No. 7; 82. CCD camera No. 4; 83. Cylinder No. 11; 84. Cylinder No. 1 gripper; 85. Thrust testing assembly; 86. Rotary cylinder; 87. Cylinder No. 12; 88. Cylinder No. 13; 89. Cylinder No. 2 gripper; 80. Unloading ramp; 810. Receiving box; 851. Force tester; 852. Cylinder No. 30; 853. Fixture; Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] like Figure 1 and Figure 8As shown in the embodiment of this application, a double silver spot welding machine is provided, the structure of which includes a frame 1, a turntable 2 and an indexing device for driving the turntable 2 to rotate are provided on the frame 1, a plurality of positioning fixtures 3 are arranged circumferentially on the turntable 2, and a copper part feeding mechanism 4 for feeding copper parts, a silver spot feeding mechanism 5 for feeding silver spots, a detection mechanism 6 for detecting before welding, a welding mechanism 7 for welding silver spots and copper parts, and a test receiving mechanism 8 for performing thrust testing on the welded products and collecting them. The welding mechanism 7 includes a fourth support 71 mounted on the frame 1, a first linear guide rail 72 mounted on the fourth support 71, a slide plate 73 slidably mounted on the first linear guide rail 72, an eighth cylinder 74 fixedly mounted on the fourth support 71 for driving the slide plate 73 to slide along the first linear guide rail 72, a second linear guide rail 75 mounted on the slide plate 73 and perpendicular to the first linear guide rail 72, a positive electrode 76 and a negative electrode 77 slidably mounted on the second linear guide rail 75, a ninth cylinder 78 fixedly mounted on the slide plate 73 for driving the positive electrode 76 to slide along the second linear guide rail 75, and a tenth cylinder 79 for driving the negative electrode 77 to slide along the second linear guide rail 75. It also includes a temperature sensor 70 for detecting temperature changes in the copper parts.

[0034] In actual use, the copper part feeding mechanism 4 transfers the copper part to the positioning fixture 3. Then, the turntable 2 rotates, moving the positioning fixture 3 containing the copper part to the corresponding position of the silver dot feeding mechanism 5. The silver dot feeding mechanism 5 then places two silver dots on the copper part. The turntable 2 continues to rotate, moving the positioning fixture 3 to the corresponding position of the detection mechanism 6. The detection mechanism 6 checks whether the position of the silver dots is correct. If the silver dots are correct, the turntable 2 continues to rotate, sending the positioning fixture 3 to the corresponding position of the welding mechanism 7. The welding mechanism 7 then uses the silver dots to... Spot welding is performed on the copper part. The specific welding action is as follows: When the positioning fixture 3, which holds the copper part and the silver spot, moves with the turntable 2 to correspond with the welding machine mechanism, cylinder 8 74 drives the slide plate 73 to move to one side of the turntable 2, so that the positive electrode 76 and the negative electrode 77 are respectively located on both sides of the copper part. Then, cylinders 9 78 and 10 79 drive the positive electrode 76 and the negative electrode 77 to abut against both sides of the copper part. Then, the current flows through the positive electrode 76, through the copper part, and into the negative electrode 77, causing the copper part to generate heat. The heat is used to melt the silver spot, thus forming a weld between the silver spot and the copper part. During the welding process, the temperature sensor 70 detects the temperature change of the copper part in real time to ensure the consistency of the welding of the two silver spots. Then, the testing and receiving mechanism 8 detects whether the silver spot has completely melted and transfers the product formed by the complete melting and welding with the copper part out of the positioning fixture 3.

[0035] The above design enables double silver spot welding of copper parts. By setting a temperature sensor 70 on the welding mechanism 7, the temperature change and consistency of the two silver spots during welding are observed, overcoming the inconsistency of temperature change during double silver spot welding, and enabling the double silver spots to be welded onto the copper parts quickly and accurately.

[0036] Specifically: such as Figure 2 As shown, the positioning fixture 3 includes a first linear module 31 mounted on the turntable 2, a first plate 32 fixedly mounted on the first linear module 31, and two fixture components 33 arranged side-by-side on the first plate 32. Each fixture component 33 includes a first slide cylinder 331 mounted on the first plate 32, a first placement plate 332 mounted at the output end of the first slide cylinder 331, a second slide cylinder 333 mounted at one end of the first placement plate 332, and a push plate 334 mounted at the output end of the second slide cylinder 333. The first placement plate 332... The other end is provided with a protrusion 335. The push plate 334 and the protrusion 335 respectively position the two ends of the product. The output end of the first slide cylinder 331 is also provided with a vertical plate 336. The vertical plate 336 is provided with a third linear guide rail 337. The first cylinder 338 with its output end pointing downward is slidably provided on the third linear guide rail 337. The vertical plate 336 is provided with a second cylinder 339 for driving the first cylinder 338 to slide along the third linear guide rail 337. The output end of the first cylinder 338 is provided with a pressure block 330.

[0037] In actual use, one tooling component 33 is selected to place one product, and another tooling component 33 is selected to place another product. When each station is working, the first linear module 31 and the first or second tooling component 33 are moved to a position that is easy to process. Then, following the rotation of the turntable 2, the copper parts and silver dots are received in sequence, and then inspected and welded. When the copper part is placed on the first placement plate 332, the push plate 334, driven by the second slide cylinder 333, works with the protrusion 335 to position the copper part. When the silver dot is placed on the copper part located in the tooling component 33, the pressure block 330, driven by the first cylinder 338, presses the silver dot from above, so that the silver dot will not detach from the copper part during the rotation of the turntable 2.

[0038] In the above design, the structural design and specific implementation of the positioning fixture 3 enable the copper parts and silver dots to be effectively positioned after they are placed.

[0039] Specifically: such as Figure 3 and Figure 4As shown, the copper part feeding mechanism 4 includes a second linear module 41 and a third linear module 42 arranged along the X direction on the frame 1, a first material tray 43 and a second material tray 44 fixedly arranged at the output end of the second linear module 41, a centering component 45 arranged on the frame 1, a transfer component 46 arranged on the frame 1 for transferring products from the first material tray 43 or the second material tray 44 to the centering component 45, and an adsorption component 47 arranged on the third linear module 42 for transferring products from the centering component 45 to the positioning fixture 3. The centering component 45 includes a mounting base 451 arranged on the frame 1, and two... The mounting base 451 includes a positioning block 452 on one side, a third cylinder 453 on the other two sides of the mounting base 451, a push block 454 at the output end of the third cylinder 453, a fourth cylinder 455 above the mounting base 451, and a pressure plate 456 at the output end of the fourth cylinder 455. The mounting base 451 is located between the second linear module 41 and the third linear module 42. The adsorption assembly 47 includes a fifth cylinder 472 on the third linear module 42 with its output end facing the mounting base 451, a sixth cylinder 473 at the output end of the fifth cylinder 472 with its output end facing upward, and a first suction plate 474 on the sixth cylinder 473.

[0040] In actual use, when the empty positioning mechanism corresponds to the copper part feeding mechanism 4, the transfer component 46 grabs the copper part in the first material tray 43 or the second material tray 44 and transfers it to the mounting base 451. Then, the two third cylinders 453 drive the push block 454 to abut against the copper part, and then the fourth cylinder 455 drives the pressure block 330 to press the copper part from above, so that the four sides of the copper part are abutted by the push block 454 and the positioning block 452 respectively to complete the positioning. The upper end face of the copper part is positioned by the pressure plate 456. Then, cylinders 453 and 455 are reset. Using linear module 42, cylinder 472 is driven to the position corresponding to the copper part. Then, cylinder 472 drives cylinder 473 to move directly above the copper part. Then, cylinder 473 drives suction plate 474 to move down and pick up the copper part. Then, linear module 42 drives cylinder 472 to move towards positioning fixture 3 on turntable 2. Cylinders 473 and 472 are adjusted to the appropriate horizontal and vertical positions to place the copper part on suction plate 474 onto positioning fixture 3.

[0041] In the above design, the structural design and specific implementation of the copper feeding mechanism 4 enable the copper feeding to be fast and accurate.

[0042] Specifically: such as Figure 5As shown, the silver dot feeding mechanism 5 includes a vibratory feeder 51 mounted on the frame 1, a receiving assembly 52 mounted on the frame 1 for receiving silver dots from the vibratory feeder 51, a camera assembly 53 mounted on the frame 1, a pressing cylinder 54 mounted on the frame 1 for pressing the silver dots in the receiving assembly 52, a first bracket 55 mounted on the frame 1, a fifth linear module 56 mounted on the first bracket 55, a twentieth cylinder 57 mounted on the fifth linear module 56, a second suction plate 58 mounted at the output end of the twentieth cylinder 57, a sixth linear module 59 mounted on the first bracket 55, and a positioning element 50 mounted at the output end of the sixth linear module 59.

[0043] It should be noted that the positioning element 50 is provided with a contour groove that matches the side of the silver dot.

[0044] In actual use, when the positioning fixture 3, on which the copper part is placed, rotates to correspond with the silver dot feeding mechanism 5, the vibratory plate 51 vibrates the silver dot into the receiving component 52. Then, the pressing cylinder 54 presses the silver dot in the receiving component 52, and the fifth linear module 56 drives the second suction plate 58 to absorb the silver dot in the receiving component and move it to the top of the positioning fixture 3. The sixth linear module 59 drives the positioning component 50 to move to the correct position that matches the silver dot. Then, the twentieth cylinder 57 drives the second suction plate 58 to move down and place the silver dot on the copper part.

[0045] In the above design, the structural design and specific implementation of the silver dot feeding mechanism 5 enable the silver dots to be accurately and quickly placed on the copper parts.

[0046] Specifically: such as Figure 6 and Figure 7 As shown, the detection mechanism 6 includes a first detection component 61, a second detection component 62, and a third detection component 63 for detection from three different directions. The first detection component 61 and the second detection component 62 have the same structure and are symmetrically arranged. The third detection component 63 is disposed between the first and second components. The first detection component 61 includes a second bracket 611 mounted on the frame 1, a No. 7 cylinder 612 mounted on the second bracket 611, a first connecting shaft 613 fixedly mounted on the output end of the No. 7 cylinder 612, and a first CCD camera 614 mounted on the first connecting shaft 613. The first CCD camera 614 is connected to the first connecting shaft 613 by a clamp. The third detection component 63 includes a third bracket 631 mounted on the frame 1, a third connecting plate 632 mounted on the third bracket 631, a third connecting shaft 633 mounted on the third connecting plate 632, and a third CCD camera 634 mounted on the third connecting shaft 633. The third CCD camera 634 is connected to the third connecting shaft 633 by a clamp.

[0047] In actual use, after the positioning fixture 3, which holds the copper part and the silver dot, moves with the turntable 2 to correspond with the detection mechanism 6, the first detection component 61, the second detection component 62, and the third detection component 63 detect the silver dot from the radial direction. Specifically, the seventh cylinder 612 drives the first connecting shaft 613 to move towards one side of the turntable 2, so that the first CCD camera 614 located on the first connecting shaft 613 corresponds to one side of the silver dot. When it is necessary to adjust the shooting angle of the first CCD camera 614 and the third CCD camera 634, the first CCD camera 614 and the third CCD camera 634 are rotated by tightening and loosening the clamps to complete the shooting at the optimal angle for the silver dot.

[0048] The above design allows for convenient detection of the silver spot position and ensures the accuracy of the detection results, thereby guaranteeing the accuracy of the welding process.

[0049] Specifically: such as Figure 9 and Figure 10 As shown, the test receiving mechanism 8 includes a No. 7 linear module 81 mounted above the frame 1, a No. 4 CCD camera 82 mounted at the output end of the No. 7 linear module 81, an No. 11 cylinder 83 located to one side of the No. 4 CCD camera 82 with its output end facing downwards, a No. 1 cylinder 338 gripper fixedly mounted at the output end of the No. 11 cylinder 83, a thrust test assembly 85 mounted on the frame 1 for thrust testing of the welded product, a rotary cylinder 86 mounted on the frame 1 with its output end facing upwards, and a horizontally mounted rotary cylinder... The components include cylinder 87 (number 12) on frame 1, cylinder 88 (number 13) fixedly mounted at the output end of cylinder 87 with the output end facing downwards, gripper 339 (number 2) fixedly mounted at the output end of cylinder 88, unloading ramp 80 on frame 1, and receiving box 810 located below the outlet of unloading ramp 80. The thrust testing assembly 85 includes a force tester 851 mounted on frame 1, cylinder 852 (number 30) mounted above the force tester 851, and fixture 853 mounted above the force tester 851.

[0050] It should be noted that the silver spot does not necessarily melt completely when the copper part is soldered. This is because the copper part itself may have burrs, which can easily cause sparking, resulting in the electrode not heating up when in contact. The solder will just stick to the surface of the product but will not fall off.

[0051] In actual use, after the silver spot and copper part are welded, they rotate with turntable 2 to correspond with the test receiving mechanism 8. Linear module 7 81 drives CCD camera 4 to be positioned above the silver spot on the product. After the silver spot and copper part are welded, cylinder 11 83 drives cylinder 1 338 to grab the product and transfer it to the fixture 853 of the thrust test component 85. Cylinder 30 852 pushes the cylinder from the side of the product. When the thrust of cylinder 30 852 is lower than the preset thrust for the complete melting of the silver spot, the product will shift or deform, which means the welding is unqualified. Otherwise, the external welding is qualified. Then, after the gripper of cylinder 2 339 grabs the qualified product, rotary cylinder 86 drives cylinder 12 87 to rotate above the unloading ramp 80. Then, the gripper of cylinder 2 339 drops the product onto the unloading ramp 80 and slides it into the receiving box 810.

[0052] It should be noted that a detection component is included to detect whether the product has shifted or deformed.

[0053] In the above design, the thrust test component 85 can test products with unqualified welding, ensuring the yield of products in the receiving box 810.

[0054] A welding method using a double silver spot welding machine includes the following steps:

[0055] S1. Transfer the copper parts to the positioning fixture;

[0056] S2. Transfer the silver spot to the copper part of the positioning fixture;

[0057] S3. To detect the silver spot on the copper part, cylinder 612 drives the first connecting shaft 613 to move towards the turntable 2, so that the first CCD camera 614 located on the first connecting shaft 613 aligns with one side of the silver spot. When it is necessary to adjust the shooting angle of the first CCD camera 614 and the third CCD camera 634, the first CCD camera 614 and the third CCD camera 634 are rotated by tightening and loosening the clamps to complete the shooting at the optimal angle for the silver spot.

[0058] S4. Welding the silver spot and copper part: After the positioning fixture 3, containing the copper part and silver spot, moves with the turntable 2 to correspond with the welding machine mechanism, cylinder 8 74 drives the slide plate 73 to move to one side of the turntable 2, so that the positive electrode 76 and the negative electrode 77 are respectively located on both sides of the copper part. Then, cylinders 9 78 and 10 79 drive the positive electrode 76 and the negative electrode 77 to abut against both sides of the copper part. Then, the current flows through the positive electrode 76, through the copper part, and into the negative electrode 77, causing the copper part to generate heat. The heat is used to melt the silver spot, thus forming a weld between the silver spot and the copper part. During the welding process, the temperature sensor 70 detects the temperature change of the copper part in real time to ensure the welding consistency of the two silver spots. Then, the receiving mechanism 8 checks whether the silver spot has completely melted and transfers the product formed by the complete melting and welding with the copper part out of the positioning fixture 3.

[0059] S5. Inspect the welded silver points and copper parts, and collect the inspected silver points and copper parts: After the welded silver points and copper parts are rotated with turntable 2 to correspond with the test receiving mechanism 8, the No. 7 linear module 81 drives the No. 4 CCD camera 82 to be positioned above the product silver points. After the silver points and copper parts are welded, the No. 11 cylinder 83 drives the No. 1 cylinder 338 gripper to grab the product and transfer it to the fixture 853 of the thrust test component 85. The No. 30 cylinder 852 pushes the cylinder from the side of the product. When the thrust of the No. 30 cylinder 852 is lower than the preset thrust for the complete melting of the silver points, the product will shift or deform, which means the welding is unqualified. Otherwise, the external welding is qualified. Then, the No. 2 cylinder 339 gripper grabs the qualified product, and the rotary cylinder 86 drives the No. 12 cylinder 87 to rotate above the unloading ramp 80. Then, the No. 2 cylinder 339 gripper drops the product onto the unloading ramp 80 and slides it into the receiving box 810.

[0060] In further detail, it should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double silver spot welding machine, comprising a frame (1), wherein a turntable (2) and an indexing device for driving the turntable (2) to rotate are provided on the frame (1), and a plurality of positioning fixtures (3) are arranged circumferentially on the turntable (2), characterized in that: The frame (1) is equipped with a copper feeding mechanism (4) for feeding copper parts, a silver point feeding mechanism (5) for feeding silver points, a detection mechanism (6) for pre-welding inspection, a welding mechanism (7) for welding silver points and copper parts, and a test receiving mechanism (8) for performing thrust tests on the welded products and collecting them. The welding mechanism (7) includes a fourth bracket (71) on the frame (1), a first linear guide rail (72) on the fourth bracket (71), a sliding plate (73) slidably mounted on the first linear guide rail (72), and a drive plate (73) fixedly mounted on the fourth bracket (71). The system includes an eighth cylinder (74) that slides along the first linear guide rail (72), a second linear guide rail (75) that is mounted on the slide plate (73) and perpendicular to the first linear guide rail (72), a positive electrode (76) and a negative electrode (77) that are slidably mounted on the second linear guide rail (75), a ninth cylinder (78) that is fixedly mounted on the slide plate (73) to drive the positive electrode (76) to slide along the second linear guide rail (75), and a tenth cylinder (79) that drives the negative electrode (77) to slide along the second linear guide rail (75). It also includes a temperature sensor (70) for real-time detection of the temperature change of the copper part to ensure the consistency of the welding of the two silver points. The positioning fixture (3) includes a first linear module (31) mounted on a turntable (2), a first plate (32) fixedly mounted on the first linear module (31), and two fixture components (33) mounted side by side on the first plate (32). The fixture components (33) include a first slide cylinder (331) mounted on the first plate (32), a first placement plate (332) mounted at the output end of the first slide cylinder (331), a second slide cylinder (333) mounted at one end of the first placement plate (332), and a push plate (334) mounted at the output end of the second slide cylinder (333). The first placement plate (332) The other end is provided with a protrusion (335). The push plate (334) and the protrusion (335) respectively position the two ends of the product. The output end of the first slide cylinder (331) is also provided with a vertical plate (336). The vertical plate (336) is provided with a third linear guide rail (337). The first cylinder (338) with the output end facing downward is slidably provided on the third linear guide rail (337). The vertical plate (336) is provided with a second cylinder (339) for driving the first cylinder (338) to slide along the third linear guide rail (337). The output end of the first cylinder (338) is provided with a pressure block (330). The copper part feeding mechanism (4) includes a second linear module (41) and a third linear module (42) arranged along the X direction on the frame (1), a first tray (43) and a second tray (44) fixedly arranged at the output end of the second linear module (41), a centering component (45) arranged on the frame (1), a transfer component (46) arranged on the frame (1) for transferring products from the first tray (43) or the second tray (44) to the centering component (45), and an adsorption component (47) arranged on the third linear module (42) for transferring products from the centering component (45) to the positioning fixture (3). The centering component (45) includes a mounting base (451) arranged on the frame (1), and a transfer component (46) arranged on the mounting base (451). The mounting base (451) includes positioning blocks (452) on both sides, cylinder No. 3 (453) on the other two sides of the mounting base (451), push block (454) on the output end of cylinder No. 3 (453), cylinder No. 4 (455) on the top of the mounting base (451), and pressure plate (456) on the output end of cylinder No. 4 (455). The mounting base (451) is located between linear module No. 2 (41) and linear module No. 3 (42). The adsorption assembly (47) includes cylinder No. 5 (472) on linear module No. 3 (42) with its output end facing the mounting base (451), cylinder No. 6 (473) on the output end of cylinder No. 5 (472) with its output end facing upward, and suction plate No. 1 (474) on cylinder No. 6 (473). The detection mechanism (6) includes a first detection component (61), a second detection component (62), and a third detection component (63) for detection from three different directions. The first detection component (61) and the second detection component (62) have the same structure and are symmetrically arranged. The third detection component (63) is arranged between the first detection component (61) and the second detection component (62). The first detection component (61) includes a second bracket (611) arranged on the frame (1), a No. 7 cylinder (612) arranged on the second bracket (611), and a first connecting shaft fixedly arranged at the output end of the No. 7 cylinder (612). (613) A first CCD camera (614) is mounted on the first connecting shaft (613), the first CCD camera (614) is connected to the first connecting shaft (613) by a clamp, the third detection component (63) includes a third bracket (631) mounted on the frame (1), a third connecting plate (632) mounted on the third bracket (631), a third connecting shaft (633) mounted on the third connecting plate (632), and a third CCD camera (634) mounted on the third connecting shaft (633), the third CCD camera (634) is connected to the third connecting shaft (633) by a clamp; The test receiving mechanism (8) includes a No. 7 linear module (81) mounted above the frame (1), a No. 4 CCD camera (82) mounted at the output end of the No. 7 linear module (81), an No. 11 cylinder (83) located on one side of the No. 4 CCD camera (82) with its output end facing downwards, a No. 1 cylinder gripper (84) fixedly mounted at the output end of the No. 11 cylinder (83), a thrust test assembly (85) mounted on the frame (1) for thrust testing of the welded product, a rotary cylinder (86) mounted on the frame (1) with its output end facing upwards, and a horizontally mounted component on the rotary cylinder (86). The components include cylinder 12 (87), cylinder 13 (88) fixedly mounted at the output end of cylinder 12 (87) with the output end facing downward, cylinder 2 gripper (89) fixedly mounted at the output end of cylinder 13 (88), unloading ramp (80) mounted on the frame (1), and receiving box (810) mounted below the outlet of unloading ramp (80). The thrust testing assembly (85) includes a force tester (851) mounted on the frame (1), cylinder 30 (852) mounted above the force tester (851), and fixture (853) mounted above the force tester (851).

2. The double silver spot welding machine according to claim 1, characterized in that: The silver dot feeding mechanism (5) includes a vibratory plate (51) mounted on the frame (1), a receiving assembly (52) mounted on the frame (1) for receiving silver dots in the vibratory plate (51), a camera assembly (53) mounted on the frame (1), a pressing cylinder (54) mounted on the frame (1) for pressing the silver dots in the receiving assembly (52), a first bracket (55) mounted on the frame (1), a fifth linear module (56) mounted on the first bracket (55), a twentieth cylinder (57) mounted on the fifth linear module (56), a second suction plate (58) mounted at the output end of the twentieth cylinder (57), a sixth linear module (59) mounted on the first bracket (55), and a positioning component (50) mounted at the output end of the sixth linear module (59).

3. A welding method using a double silver spot welding machine, employing the double silver spot welding machine as described in any one of claims 1 to 2, characterized in that: Includes the following steps: S1. Transfer the copper part to the positioning fixture (3); S2. Transfer the silver spot to the copper part of the positioning fixture (3); S3. The silver spot on the copper part is detected. The seventh cylinder (612) drives the first connecting shaft (613) to move to the turntable (2) side, so that the first CCD camera (614) on the first connecting shaft (613) corresponds to one side of the silver spot. When it is necessary to adjust the shooting angle of the first CCD camera (614) and the third CCD camera (634), the first CCD camera (614) and the third CCD camera (634) are rotated by tightening and loosening the clamp to complete the shooting of the silver spot at the optimal angle. S4. Welding silver dots and copper parts: When the positioning fixture (3) with copper parts and silver dots moves with the turntable (2) to correspond with the welding machine mechanism, cylinder No. 8 (74) drives the slide plate (73) to move to one side of the turntable (2), so that the positive electrode (76) and the negative electrode (77) are located on both sides of the copper part respectively. Then, cylinder No. 9 (78) and cylinder No. 10 (79) drive the positive electrode (76) and the negative electrode (77) to abut against both sides of the copper part respectively. Then, the current flows through the positive electrode (76) through the copper part and enters the negative electrode (77), so that the copper part generates heat. The heat is used to melt the silver dots to form a weld between the silver dots and the copper part. During the welding process, the temperature sensor (70) detects the temperature change of the copper part in real time to ensure the welding consistency of the two silver dots. Then, the test receiving mechanism (8) detects whether the silver dots have completely melted and transfers the product formed by the complete melting and welding with the copper part out of the positioning fixture (3). S5. Inspect the welded silver points and copper parts, and collect the inspected silver points and copper parts: After the welded silver points and copper parts are completed, they follow the turntable (2) to rotate to correspond with the test receiving mechanism (8). The No. 7 linear module (81) drives the No. 4 CCD camera (82) to be positioned above the product silver point. After the silver point and copper part are detected to be welded, the No. 11 cylinder (83) drives the No. 1 cylinder gripper (84) to grab the product and transfer it to the fixture (853) of the thrust test component (85). Cylinder No. 10 (852) pushes the cylinder from the side of the product. When the thrust of cylinder No. 30 (852) is lower than the preset thrust for the complete melting of the silver point, the product will shift or deform, which means the welding is unqualified. Otherwise, the external welding is qualified. Then, after the gripper of cylinder No. 2 (89) picks up the qualified product, the rotating cylinder (86) drives cylinder No. 12 (87) to rotate to the top of the unloading ramp (80). Then, the gripper of cylinder No. 2 (89) drops the product onto the unloading ramp (80) and slides it into the receiving box (810).

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