Lower shell assembly performance detection and resistance welding monitoring device

Abstract

The application discloses a lower shell assembly performance detection and resistance welding monitoring device, and belongs to the technical field of welding devices. The device comprises a mounting rack, which is divided into upper and lower mounting areas by a layered plate in the mounting rack; a conveying part is arranged on a cross beam at the side of the mounting rack, and a workpiece mounting part is movably arranged on the conveying part; a clamping assembly is installed on the upper surface of the layered plate through a driving device and has multiple direction movement degrees of freedom; a test tool is fixed to one side of the upper surface of the layered plate and has movement degrees of freedom in the horizontal direction and the vertical direction relative to the conveying part; and a welding assembly is fixed to the upper surface of the other side of the layered plate and is used for workpiece welding operation in the workpiece mounting part. During work, the test tool works to test the workpiece in the workpiece mounting part, and the clamping assembly moves to transfer the workpiece to the welding assembly for welding. The components can be matched with each other, production efficiency and product quality are guaranteed.

Description

Technical Field

[0001] This application relates to the field of welding equipment technology, specifically to a device for performance testing of lower housing assembly and monitoring of resistance welding. Background Technology

[0002] A PCB, also known as a printed circuit board, provides the electrical connections for electronic components. Its design primarily involves layout design. The main advantages of using PCBs are significantly reduced wiring and assembly errors, improved automation levels, and higher production efficiency. During manufacturing, to ensure the normal and qualified use of products, it is often necessary to perform assembly performance testing and soldering on the lower casing. Soldering typically uses copper sheets to solder the drive equipment and the PCB. Many electronic products use motors as drive devices; during installation, the pins on the motor need to be soldered to the PCB. However, currently, most PCB board inspections are conducted manually to check whether the circuits of each part of the PCB board meet the design parameter requirements. This method is slow, has low accuracy, and cannot meet the needs of rapid inspection. Performance testing and soldering procedures are often carried out separately, resulting in low production efficiency. Summary of the Invention

[0003] The purpose of this application is to provide a device for testing the performance of a lower housing assembly and monitoring resistance welding, so as to solve the defects in the prior art.

[0004] To achieve the above objectives, this application employs the following technical solution: The lower housing assembly performance testing and resistance welding monitoring device includes The mounting rack is divided into upper and lower mounting areas by internal layered panels; A conveying section is arranged on a crossbeam at the side of the mounting frame, and a workpiece mounting section is movably mounted on the conveying section; The clamping assembly is mounted on the upper surface of the layered plate by a driving device and has multiple degrees of freedom of movement in multiple directions; The test fixture is fixed to one side of the upper surface of the layered plate and has degrees of freedom of movement in the horizontal and vertical directions relative to the conveying part; A welding assembly, fixed to the upper surface of the other side of the layered plate, is used for welding workpieces in the workpiece mounting section. The test fixture operates to move the workpiece in the test workpiece mounting section, and the clamping assembly moves to transfer the workpiece to the welding assembly for welding.

[0005] In a further embodiment of this application, the test fixture includes a base plate fixedly mounted on a layered plate, and a mounting plate is positioned and slidably mounted on the base plate. A cylinder is fixedly mounted on the mounting plate, and a first test piece is fixedly attached to the extension rod of the cylinder. A cylinder is also obliquely fixed on the mounting plate, and a second test piece is fixed to the extension rod of the cylinder.

[0006] By adopting the above technical solution, the movement of the corresponding test piece is controlled by cylinders No. 3 and No. 2, which can quickly and stably contact the pins on the motor and the copper sheets on the PCB board, as well as the sockets on the lower shell, thus completing the testing process stably and efficiently. The two test pieces can move back and forth to the workpiece mounting part, avoiding any obstruction to the transfer of the workpiece.

[0007] In a further embodiment of this application, the conveying unit includes rollers installed at both ends of the crossbeam, and each crossbeam has an installation groove on its upper surface. A support plate is fixed in the installation groove. The two rollers on each crossbeam are connected by a belt. The workpiece mounting unit is placed between the two belts and in contact with the belts. The workpiece mounting unit includes a workpiece mounting plate, and the workpiece mounting plate is placed between the two belts. The workpiece mounting plate has multiple workstations.

[0008] By adopting the above technical solution, the rotating belt drives the workpiece mounting plate to move, making the transfer more stable. The support plate fixed on the crossbeam can support the workpiece mounting plate. The tensioned belt alone cannot support the workpiece mounting plate for a long time. This design extends the service life of the equipment. Controlling the distance between the two crossbeams can be used for workpiece mounting plates of different sizes.

[0009] In a further embodiment, the bottom of the workpiece mounting plate is also provided with a lifting assembly; the lifting assembly includes a mounting plate fixed to the bottom of the crossbeam, a limit plate fixed in a matrix on the mounting plate, and a drive plate between the mounting plate and the workpiece mounting plate. A fourth cylinder is fixed on the side of the mounting plate away from the drive plate, and the telescopic rod of the fourth cylinder moves through the mounting plate and is fixedly connected to the drive plate. The fourth cylinder drives the workpiece mounting plate in a directional manner.

[0010] By adopting the above technical solution, since the workpiece mounting plate is placed directly on the belt and is not effectively fixed, the two test pieces need to be inserted or abutted against the workpiece during performance testing. The test pieces acting directly on the unfixed workpiece may affect the test results. Using cylinder No. 4 to drive the workpiece mounting plate to abut against the limit plate can ensure the smooth testing process.

[0011] In a further embodiment of this application, the clamping assembly includes a second mounting plate fixed to the driving device. A fifth cylinder is fixed to the bottom surface of the second mounting plate via an L-shaped plate. Two sliders on the fifth cylinder are respectively equipped with a first gripper and a first clamping jaw.

[0012] By adopting the above technical solution, the No. 5 cylinder here uses a rodless cylinder. The first and second grippers are fixed on the cylinder slider. During operation, the merging and separating actions of the two grippers can be controlled simultaneously, resulting in high clamping efficiency, good clamping strength, and strong stability.

[0013] In a further embodiment of this application, the welding assembly includes a control box, which is fixed to the layered plate via a profile bracket. A first machine body is slidably mounted on the profile bracket, and the machine body is driven by a sixth cylinder. A flat welding head is fixed to the bottom of one side of the first machine body, and a second machine body is slidably mounted to the bottom of the other side, and the second machine body is driven by a seventh cylinder. An inclined plate welding head is connected to the bottom of the second machine body, and the inclined plate welding head and the flat plate welding head cooperate with each other.

[0014] By adopting the above technical solution, the inclined plate welding head and the flat plate welding head are simultaneously moved by cylinder No. 6 for initial position adjustment, and then cylinder No. 7 is used to control the welding position of the flat plate welding head and the inclined plate welding head. The welding accuracy of the device can be guaranteed, the mobility is stronger, and the welding quality of the workpiece can be guaranteed.

[0015] In a further embodiment, a verification component is also installed on the layered board; the verification component includes a movable second connector and a verification motor, a workpiece mounting plate is fixed on the second connector, and the pin of the verification motor is placed in the mounting port at the upper end of the workpiece mounting plate, and a copper sheet is provided in the mounting port at the lower end. At least two locking bolts are threadedly installed on the workpiece mounting plate, and the locking bolts are rotated to make the pin of the verification motor and the copper sheet abut against each other.

[0016] By adopting the above technical solution, a calibration component is added to the device. After the welding machine is pre-set with welding values, it performs welding on the pins and copper sheets of the calibration motor to observe whether the welding effect meets the requirements, thus ensuring the quality of welding and work efficiency. On the other hand, the welding machine needs to be calibrated after long-term welding to prevent deviations in accuracy and position during long-term welding operations. Setting up the calibration component can also serve as an experimental piece to test the performance of the welding machine.

[0017] In a further embodiment of this application, an industrial camera is fixed on the profile bracket, and the industrial camera is electrically connected to a displacement monitor; the driving device is a four-axis robot, and the gripping assembly is mounted on the mounting axis of the four-axis robot; the industrial camera can take pictures of the workpiece before and after welding, and the data analysis can ensure the welding quality of each workpiece and reduce the defect rate. The driving device uses a four-axis robot, and the degrees of freedom generated by the four-axis robot can meet the movement requirements of the gripper. Compared with a six-axis robot, the price is much lower, reducing manufacturing costs.

[0018] According to the above technical solution, this application has the following effects: When this application is used, the workpiece is continuously transported by the conveyor and the workpiece is accurately tested using the test fixture. The process is stable and the testing efficiency is high. Then the moving gripper assembly is transferred to the welding assembly for welding. The positions of the welding assembly and the gripper assembly cooperate with each other to ensure welding accuracy. The assembly line production greatly speeds up the production efficiency. At the same time, the components can cooperate with each other to ensure product quality. The bottom of the workpiece mounting section is equipped with a lifting component, which can lift and fix the workpiece mounting plate, improve the stability of the workpiece during pillow testing, reduce the occurrence of errors, and ensure the accuracy of test results. In addition, the device is equipped with a calibration component that continuously monitors the welding effect of the welding machine, thereby promptly detecting changes in welding quality. This gives the device a "self-inspection" function, further ensuring the quality control of the final product. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the structure after removing part of the mounting rack in an embodiment of this application.

[0021] Figure 3 This is a schematic diagram illustrating the structure of the test fixture in an embodiment of this application.

[0022] Figure 4 yes Figure 2 Enlarged diagram of point A in the middle.

[0023] Figure 5 This is a schematic diagram illustrating the structure of the driving device and the clamping assembly in the embodiments of this application.

[0024] Figure 6 This is a schematic diagram illustrating the structure of the verification component in an embodiment of this application.

[0025] Figure 7 This is a schematic diagram illustrating the structure of the workpiece mounting section and the lifting assembly in the embodiments of this application.

[0026] Figure 8 This is a schematic diagram illustrating the structure of the welding assembly in an embodiment of this application.

[0027] Figure 9 This is a partial structural diagram illustrating the transmission unit in an embodiment of this application.

[0028] Figure 10 This is a schematic diagram of the workpiece structure in an embodiment of this application.

[0029] in: 1. Mounting rack; 101. Layered board; 102. Crossbeam; 2. Test fixture; 21. First test piece; 22. Second test piece; 23. Mounting plate No. 1; 231. Base plate; 24. Slide rail No. 1; 25. Cylinder No. 1; 26. Straight rod; 27. Pressure block; 271. Rubber head; 28. Cylinder No. 2; 29. ​​Cylinder No. 3; 3. Workpiece mounting section; 31. Workpiece mounting plate; 32. Workstation; 30. Lifting assembly; 301. Mounting plate; 302. Limiting plate; 303. Protruding plate; 304. Connector No. 1; 305. First linear bearing; 306. First guide rod; 307. Drive plate; 308. Cylinder No. 4; 4. Clamping assembly; 41. Mounting plate No. 2; 42. L-shaped plate; 43. Cylinder No. 5; 44. First gripper; 45. Second gripper; 5. Drive equipment; 51. Support platform; 6. Conveying section; 61. Rotary wheel; 62. Support plate; 621. Limiting protrusion; 63. Belt; 64. Mounting groove; 7. Verification components; 71. Mounting plate No. 3; 72. Connector No. 2; 73. Part mounting plate; 731. Mounting port; 732. Locking bolt; 733. Verification motor; 74. Cylinder No. 8; 75. Second guide rod; 76. Second linear bearing; 701. Support rod; 702. Photoelectric sensor; 8. Welding components; 81. Inclined plate welding head; 82. Flat plate welding head; 83. Unit 1; 831. Cylinder No. 6; 84. Unit 2; 841. Slide; 842. Slide groove; 843. Cylinder No. 7; 85. Control box; 86. Profile bracket; 9. Lower housing; 91. Pin angle; 92. Copper sheet; 10. Industrial camera; Detailed Implementation To make the technical means, creative features, objectives and effects of this application easier to understand, the following describes this application in conjunction with specific implementation methods.

[0030] It should be noted that in the description of this application, the terms "front," "rear," "left," "right," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and do not require this application to be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "front," "rear," "left," "right," "upper," and "lower" used in the description of this application refer to the directions in the accompanying drawings, and the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0031] like Figure 1 and Figure 2 As shown, this application provides a performance testing and resistance welding monitoring device for a lower housing 9 assembly, which includes a mounting frame 1, a conveying section 6, a clamping assembly 4, a testing fixture 2, and a welding assembly 8. A layered plate 101 is horizontally welded inside the mounting frame 1, dividing the mounting frame 1 into upper and lower mounting areas. A controller is installed in the lower mounting area. The conveying section 6 is mounted on a crossbeam 102 on the side of the mounting frame 1, and a workpiece mounting section 3 is movably mounted on the conveying section 6. A lifting assembly 30 is also installed below the workpiece mounting section 3 for... The lifting and fixing workpiece mounting part 3; the clamping assembly 4 is mounted on the upper surface of the layer plate 101 via the driving device 5 and has multiple degrees of freedom of movement in multiple directions. The driving device 5 is fixed in the middle of the layer plate 101 via the support platform 51. The testing fixture 2 is fixed on the upper surface of one side of the layer plate 101 and has degrees of freedom of movement in the horizontal and vertical directions relative to the conveying part 6. The welding assembly 8 is mounted on the upper surface of the other side of the layer plate 101 and is used for welding workpieces in the workpiece mounting part. An industrial camera 10 (CCD camera) is also fixedly mounted next to the welding assembly 8.

[0032] Observation Appendix Figure 10 In this embodiment, the workpiece is the lower shell 9, and the pin corners and copper sheets 92 that are in close contact therein are welded.

[0033] During operation, the workpiece is mounted on the workpiece mounting part 3 and moves under the action of the conveying part 6. It stops when it reaches the position of the test fixture 2. The test fixture 2 moves to contact the workpiece for performance testing. Then, the drive device 5 drives the clamping assembly 4 to clamp the workpiece and move it towards the welding assembly 8. Before welding, the workpiece is photographed and uploaded to the system by the industrial camera 10. After welding, the workpiece is photographed and uploaded to the system again. Finally, the drive device 5 moves the workpiece on the clamping assembly 4 to the workpiece mounting part 3. The conveying part 6 continues to work to move the workpiece to the next process.

[0034] Reference Appendix Figures 2 to 4 In this embodiment, the test fixture 2 includes a base plate 231 and a first mounting plate 23. The base plate 231 is fixed on the layered plate 101, and two first slide rails 24 are fixed parallel to each other on the base plate 231. A slider (obscured in the figure) is welded to the bottom of the first mounting plate 23. The slider slides on the first slide rail 24. A first cylinder 25 is also fixedly installed on the side of the base plate 231. The first cylinder 25 is a rodless cylinder. The first mounting plate 23 is fixedly connected to the moving block of the first cylinder 25. Two second cylinders 28 are fixed on the first mounting plate 23. A straight rod 26 is fixed to the telescopic rod of the second cylinder 28. A pressure block 27 and a first test piece 21 are fixed to the end of the straight rod 26 away from the second cylinder 28. A third cylinder 29 is fixed obliquely on the first mounting plate 23. A second test piece 22 is fixed to the telescopic rod of the third cylinder 29. In some other solutions, a rubber head 271 is provided at the bottom of the pressure block 27.

[0035] When the workpiece mounting part 3 moves to the test fixture 2, the lifting assembly 30 lifts and fixes the workpiece mounting part 3. The first cylinder 25 drives the first mounting plate 23 to move towards the workpiece mounting part 3. The second cylinder 28 moves the pressure block 27 and the first test piece 21 down. The rubber head 271 on the pressure block 27 abuts against the positioning workpiece. The first test piece 21 contacts the pin corner in the workpiece. The third cylinder 29 pushes the second test piece 22 to insert into the slot on the workpiece. Data detection can be performed after the test piece is powered on.

[0036] Reference Appendix Figure 2 and 7 The structure of the workpiece mounting part 3 and the lifting assembly 30 in this embodiment is shown in the figure. The workpiece mounting part 3 has a simple structure, which includes a workpiece mounting plate 31. Multiple workstations 32 are set on the workpiece mounting plate 31. The edges of the workpiece mounting plate 31 are rounded to reduce the probability of accidental injury to workers. The lifting assembly 30 is installed on the crossbeam 102 of the workpiece mounting section 3. The lifting assembly 30 includes a mounting plate 301, a drive plate 307, and a fourth cylinder 308. The mounting plate 301 is fixed to the bottom of the crossbeam 102 by bolts. The drive plate 307 is located between the workpiece mounting plate 31 and the mounting plate 301. The fourth cylinder 308 is fixed in the middle of the side of the mounting plate 301 facing away from the drive plate 307. The telescopic rod of the fourth cylinder 308 moves through the mounting plate 301 and is fixed to the drive plate 307 by a first connector 304. The side of the mounting plate 301 facing the drive plate 307 is fixed in a matrix. There are at least four limiting plates 302, which are also fixed to the adjacent crossbeams 102 by bolts. A protruding plate 303 extends from one side of the limiting plate 302 facing the workpiece mounting plate 31. First linear bearings 305 are also fixed on both sides of the mounting plate 301. A first guide tube 306 is inserted inside the first linear bearing 305. One end of the first guide tube 306 is fixedly welded to the drive plate 307. With the cooperation of the first guide tube 306 and the first linear bearing 305, the drive plate 307 can stably lift the workpiece mounting plate 31 and restrict it to the four protruding edges. The stability of the workpiece mounting plate 31 is a prerequisite for the workpiece stability test.

[0037] Reference Appendix Figure 2 and 5 In this embodiment, the clamping component 4 mainly has two movable grippers to achieve the clamping function. The clamping component 4 includes a second mounting plate 41 and a fifth cylinder 43. The second mounting plate 41 is fixed on the movable shaft of the drive device 5. The fifth cylinder 43 is fixed to the bottom of the second mounting plate 41 through an L-shaped plate 42. The fifth cylinder 43 is also a rodless cylinder with a moving block installed on it. Each moving block is fixedly connected to the first gripper 44 and the second gripper 45. Activating the fifth cylinder 43 controls the two grippers to move apart or closer together. In this embodiment, the drive device 5 uses a SCARA four-axis robot.

[0038] Reference Appendix Figure 2 and 9 The welding assembly 8 mentioned in this embodiment, as shown in the attached drawings, comprises a first body 83, a second body 84, a slanted welding head 81, a flat welding head 82, and a control box 85. An inverter is installed inside the control box 85. The flat welding head 82 is fixed to the bottom of one side of the first body 83. The first body 83 is mounted on a profile support 86 via a slider and slide rail, and its movement is controlled by a sixth cylinder 831 on the first body 83. The second body 84 is also mounted on a first body 83 via a slider and slide rail. On the other side of the bottom of the No. 83 body, the movement is controlled by the No. 7 cylinder 843 on the No. 2 body 84 (cylinder-controlled movement is existing technology and will not be described in detail here). The No. 6 cylinder 831 and the No. 7 cylinder 843 are both double-headed and controlled by solenoid valves. In this embodiment, a slide groove 841 can also be set at the bottom of the No. 2 body 84. A slide seat 842 is slidably installed on the slide groove 841. A spring is connected between the slide seat 842 and the No. 2 body 84 to fix the inclined plate welding head 81 on the slide seat 842.

[0039] In use, the clamping assembly 4 transfers the workpiece on the workpiece mounting plate 31 to the position of the inclined plate welding head 81 and the flat plate welding head 82. The flat plate welding head 82 abuts against one side of the workpiece pin angle. The seventh cylinder 843 drives the inclined plate welding head 81 to move and abut against the copper sheet 92. At this time, the spring is compressed, making the two welding heads and the welding area fit more tightly. The welding assembly 8 is powered on to perform welding operations. When the seventh cylinder 843 drives the second machine body 84 to reset, the inclined plate welding head 81 will also automatically reset under the deformation of the spring.

[0040] Other embodiments add a verification component 7, see Appendix Figure 2 and 6The verification component 7 is installed below the welding component 8. The verification component 7 includes a second connector 72 and an eighth cylinder 74. The eighth cylinder 74 is fixed to the layered plate 101 via a third mounting plate 71. The telescopic rod of the eighth cylinder 74 moves through the third mounting plate 71 and is fixedly connected to the second connector 72. Second guide rods 75 are fixed on both sides of the second connector 72. The second guide rods 75 are arranged along the telescopic direction of the eighth cylinder 74. A second linear bearing 76 is also correspondingly installed on the third mounting plate 71. The second guide rods 75 are correspondingly inserted into the second linear bearing 76. A component mounting plate 73 is also bolted to the second connector 72. The component mounting plate 73 has two mounting ports 731. The pin of the verification motor 733 is positioned at the top. Inside the square mounting port 731, the copper sheet 92 is placed in the lower mounting port 731. Two locking bolts 732 are screwed onto the side of the component mounting plate 73. One locking bolt 732 is threaded through the upper mounting port 731 and abuts against the pin corner, while the other locking bolt 732 is threaded through the lower mounting port 731 and abuts against the copper sheet 92. The upper end of the copper sheet 92 and the pin corner are tightly fitted, which facilitates the welding of the welding assembly 8. When it is necessary to verify the setting data of the welding assembly 8, the No. 8 cylinder 74 is started to drive the verification motor 733 to move to the lower part of the welding assembly 8. Then, the inclined plate welding head 81 and the flat plate welding head 82 perform welding operations on the verification motor 733, observe the welding effect, and determine whether the set values ​​in the welding assembly 8 are correct.

[0041] In order to accurately position the welding position of the No. 8 cylinder 74 pushing the verification motor 733, a support rod 701 can be fixed on the profile bracket 86, and a photoelectric sensor 702 can be fixed at the end of the support rod 701 away from the profile bracket 86. Similarly, an appropriate number of photoelectric sensors 702 can be installed in other places of the equipment that need to be positioned.

[0042] Continue to observe the appendix Figure 2 The industrial camera 10 is bolted to the profile bracket 86 of the welding assembly 8. The industrial camera 10 is electrically connected to the displacement monitor. The workpiece before and after welding must be photographed and uploaded to the system. The system screens out unqualified workpieces to ensure the quality of the final product to the greatest extent. In some solutions, a deion fan is installed on the profile bracket 86. Before welding, the workpiece passes through the ion fan to remove surface dust.

[0043] Observation Appendix Figure 9 and 2In this embodiment, the conveying unit 6 includes four rotating wheels 61, which are rotatably mounted at the ends of each crossbeam 102. Two rotating wheels 61 on two crossbeams 102 are connected by belts 63. Each crossbeam 102 has a mounting groove 64 on its upper surface, and a support plate 62 is fixed in the mounting groove 64. The support plate 62 is located on the lower surface of the belt 63. A motor is fixed in the lower mounting area of ​​the mounting frame 1. The motor drives the belt 63 to rotate (motor drive is a conventional technology and will not be described in detail here). In use, the workpiece mounting plate 31 is placed between two belts 63, and the edge of the workpiece mounting plate 31 contacts the adjacent belt 63. The rotation of the belt 63 drives the workpiece mounting plate 31 to move.

[0044] Specific usage: 1) Install this device in the production line. In the preceding process, the workpiece, in this embodiment the lower housing 9, is installed on the workpiece mounting plate 31 at station 32. 2) As the conveyor 6 moves the workpiece mounting plate 31 to the workpiece testing section, the first cylinder 25 controls the first test piece 21 and the second test piece 22 on the workpiece testing section to move to the lower housing 9. The test lifting body moves the workpiece mounting plate 31 up and fixes it. At this time, the second cylinder 28 moves down and the pressure block 27 fixes the lower housing 9. The first and second test pieces move under the action of their respective cylinders to test the performance of the assembly in the lower housing 9. 3) Cylinder 74 pushes the installed test motor 733 and copper sheet 92 to welding assembly 8, adjusts the relevant welding data to weld the pin of test motor 733, and observes whether it is qualified; 4) After the welding data is qualified, the clamping component 4 clamps the lower housing 9, moves through the drive device 5 and is photographed by the industrial camera, and finally passes through the two welding heads on the welding component 8 for welding operation. The welding process fixes the pin angle of the motor and the cylindrical plate on the PCB board. 5) After the welding operation in the lower housing 9 is completed, the drive device 5 moves the lower housing 9 to the industrial camera's photo-taking position to take another photo, and the system analyzes the welding effect.

[0045] 6) After taking the photo, transfer the clamping assembly 4 and release the lower housing 9 onto the workpiece mounting plate 31 at station 32. The conveying unit 6 then carries it into the next processing step.

[0046] As is known from common technical knowledge, this application can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this application or equivalent to this application are included in this application.

Claims

1. A device for performance testing and resistance welding monitoring of the lower housing assembly, characterized in that, include The mounting rack (1) is divided into upper and lower mounting areas by the internal layered plate (101); A conveying section (6) is arranged on a crossbeam (102) on the side of the mounting frame (1), and a workpiece mounting section (3) is movably mounted on the conveying section (6); The clamping assembly (4) is mounted on the upper surface of the layered plate (101) by a driving device (5) and has multiple degrees of freedom of movement in multiple directions; The test fixture (2) is fixed to the upper surface of one side of the layered plate (101) and has the freedom of movement in the horizontal and vertical directions relative to the conveying part (6); The welding assembly (8) is fixed to the upper surface of the other side of the layered plate (101) and is used for welding workpieces in the workpiece mounting part (3). The test fixture (2) operates to move the workpiece in the test workpiece mounting part (3), and the clamping assembly (4) moves to transfer the workpiece to the welding assembly (8) for welding. The layered board (101) is also equipped with a verification component (7); The verification component (7) includes a movable second connector (72) and a verification motor (733). A workpiece mounting plate (73) is fixed on the second connector (72), and the pin of the verification motor (733) is placed in the mounting port (731) at the upper end of the workpiece mounting plate (73). A copper sheet (92) is also provided in the mounting port (731) at the lower end. At least two locking bolts (732) are threadedly installed on the workpiece mounting plate (73). The locking bolts (732) rotate so that the pin of the verification motor (733) and the copper sheet (92) abut against each other. The welding assembly (8) includes a control box (85), which is fixed to the layered plate (101) by a profile bracket (86). A first machine body (83) is slidably installed on the profile bracket (86). The machine body is driven by a sixth cylinder (831). A flat welding head (82) is fixed to the bottom of one side of the first machine body (83), and a second machine body (84) is slidably installed on the bottom of the other side. The second machine body (84) is driven by a seventh cylinder (843). A slanted welding head (81) is connected to the bottom of the second machine body (84). The slanted welding head (81) and the flat welding head (82) cooperate with each other.

2. The lower housing assembly performance testing and resistance welding monitoring device according to claim 1, characterized in that, The test fixture (2) includes a base plate (231) fixedly mounted on a layered plate (101), and a first mounting plate (23) is positioned and slidably mounted on the base plate (231). A second cylinder (28) is fixed on the first mounting plate (23), and a first test piece (21) is fixedly extended on the telescopic rod of the second cylinder (28). A third cylinder (29) is also obliquely fixed on the first mounting plate (23), and a second test piece is fixed on the telescopic rod of the third cylinder (29).

3. The lower housing assembly performance testing and resistance welding monitoring device according to claim 1, characterized in that, The conveying part (6) includes rollers (61) installed at both ends of the crossbeam (102), and each crossbeam (102) has an installation groove (64) on its upper surface. A support plate (62) is fixed in the installation groove (64). The two rollers (61) on each crossbeam (102) are connected by a belt (63). The workpiece mounting part (3) is placed between the two belts (63) and in contact with the belts (63).

4. The lower housing assembly performance testing and resistance welding monitoring device according to claim 3, characterized in that, The workpiece mounting part (3) includes a workpiece mounting plate (31), and the workpiece mounting plate (31) is placed between the two belts (63). The workpiece mounting plate (31) is provided with multiple workstations (32).

5. The lower housing assembly performance testing and resistance welding monitoring device according to claim 4, characterized in that, The bottom of the workpiece mounting plate (31) is also provided with a lifting assembly (30); The lifting assembly (30) includes a mounting plate (301) fixed to the bottom of the crossbeam (102). A limit plate (302) is fixedly fixed on the mounting plate (301). A drive plate (307) is provided between the mounting plate (301) and the workpiece mounting plate (31). A fourth cylinder (308) is fixed on the side of the mounting plate (301) away from the drive plate (307). The telescopic rod of the fourth cylinder (308) moves through the mounting plate (301) and is fixedly connected to the drive plate (307). The fourth cylinder (308) drives the workpiece mounting plate (31) in a directional manner.

6. The lower housing assembly performance testing and resistance welding monitoring device according to claim 1, characterized in that, The clamping assembly (4) includes a second mounting plate (41) fixed on the drive device (5). The bottom surface of the second mounting plate (41) is fixed with a fifth cylinder (43) via an L-shaped plate (42). The two sliders on the fifth cylinder (43) are respectively equipped with a first gripper (44) and a second gripper (45).

7. The lower housing assembly performance testing and resistance welding monitoring device according to claim 1, characterized in that, An industrial camera is fixed on the profile bracket (86), and the industrial camera is electrically connected to a displacement monitor.

8. The lower housing assembly performance testing and resistance welding monitoring device according to any one of claims 1 to 7, wherein the driving device (5) is a four-axis robot and the clamping assembly (4) is mounted on the mounting axis of the four-axis robot.

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