Automatic welding spot inspection equipment for lithium battery PCB (Printed Circuit Board)

Abstract

The utility model discloses a lithium battery PCB automatic welding spot inspection device which comprises a processing machine table and a conveying line which is arranged on the processing machine table and used for feeding and conveying PCB workpieces, and a three-axis moving module is arranged on the rear side of the starting end of the conveying line. Through cooperative use of a rotary mounting plate, a fixing block and a pressure sensor which are arranged on the six-axis mechanical arm in a rotating mode and a quick-change pulling claw which is fixed in a pulling claw fixing base in a penetrating mode, workpieces in a PCB positioning carrier conveyed by a conveying line are conveyed to a designated position; according to the position of a welding spot on a PCB, the six-axis mechanical arm is used for accurately adjusting the position of the quick-change pulling claw, and the rotating shaft of the six-axis mechanical arm is used for adjusting the quick-change pulling claw on the pulling claw fixing seat at each inclination angle, so that the quick-change pulling claw is adjusted to a proper angle to pull out the welding spot; therefore, the welding spot pulling action can be carried out at different positions and angles on the PCB, and further the omnibearing wire pulling treatment of the PCB is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of PCB board production, and particularly relates to an automatic solder joint inspection device for a lithium battery PCB board. Background Art

[0002] At present, in the spot welding process of the PCB board welding technology on the market, it is in the traditional semi-manual and semi-machine operation. It requires the coordination of eyes, feet and hands. Step on the foot pedal to control the spot welding head to move up, down, pause and apply force at various speeds. Both hands need to move the product very dexterously. The eyes need to accurately judge whether the wire is pressed on the pad through a microscope, and accurately remember the landing point of the welding head. There are many defects in the existing spot welding process, such as false soldering, pad detachment and welding residues remaining on the PCB board, resulting in a high defective rate of products. At present, after the existing spot welder completes spot welding, the degree of automation is low, and manual operation is required to cut the tail wire of the solder joint. High cooperation between manual and equipment is required to complete it.

[0003] Therefore, a wire pulling mechanism of an automatic spot welding device with the publication number of "CN114505569A" is used for cutting the tail wire of the solder joint of a spot welder. It includes a fixed seat, a swing arm mechanism and a wire pulling mechanism. The swing arm mechanism is erected on the fixed seat and can move according to a set track. The wire pulling mechanism is used as the pendulum part of the swing arm mechanism, is arranged at the lower end of the swing arm mechanism and moves along with the swing arm mechanism. When the spot welding is completed and the welding head still presses on the solder joint, the wire pulling mechanism clamps and straightens the tail wire of the solder joint, and then generates a lateral pulling force on the clamped and straightened tail wire that can break the tail wire of the solder joint, so as to realize the cutting of the tail wire of the solder joint of the spot welder. This mechanism can realize the actions of clamping the wire, straightening, cutting and releasing the tail wire of the solder joint after the spot welding is completed, and improve the quality and reliability of welding.

[0004] However, for the wire pulling mechanism of the above automatic spot welding device, although the tensioning unit tightens by a flexible force to complete the action of tightening the wire; the wire clamping finger connecting block connects the wire clamping cylinder and the wire clamping finger, and the wire clamping cylinder is used to drive the wire clamping finger to clamp the tail wire of the solder joint to complete the wire clamping action. There are still the following obvious defects in the use process: the above solder joint wire pulling structure can only perform the pulling and grasping of welding vertically up and down, and cannot adjust the position and angle of the pulling and grasping for the solder joint position, so that the wire pulling action can only be performed on the solder joints at the specified positions vertically up and down, which will reduce the actual production progress. Content of the Utility Model

[0005] The purpose of the utility model is to provide an automatic solder joint inspection device for a lithium battery PCB board to solve the problems put forward in the above background art.

[0006] To achieve the above object, the present utility model provides the following technical solution: An automatic solder joint inspection device for a lithium battery PCB board, comprising a processing machine table and a conveyor line on the processing machine table for feeding and conveying the PCB workpiece. A three-axis moving module for adjusting and moving in three directions and pneumatically clamping and placing the workpiece on the conveyor line for conveying is provided at the rear side of the starting end of the conveyor line. A two-way track module for multi-directional movement detection of the workpiece conveyed on the conveyor line is provided on one side of the three-axis moving module. A six-axis robotic arm for multi-directional rotational adjustment of the position of the solder joints on the workpiece for de-soldering is provided on one side of the two-way track module. A de-soldering and fixing seat for de-soldering and quickly replacing the solder joints of the workpiece is rotatably provided on the end rotating shaft of the six-axis robotic arm. A quick-change de-soldering gripper for de-soldering the solder joints of the PCB board positioned and conveyed on the conveyor line by a carrier is provided on the de-soldering and fixing seat.

[0007] Preferably, an L-shaped mounting plate is provided at the front end of the Z-direction moving track of the three-axis moving module. A disassembly and replacement quick-change plate is provided at the extended end of the mounting plate to one side. A jaw cylinder for clamping the cover plate is provided on the lower end surface of the disassembly and replacement quick-change plate, enabling the jaw cylinder to perform three-directional movement for clamping the cover plate on the PCB board.

[0008] Preferably, a fine-tuning frame is slidably driven on the Y-axis moving track of the two-way track module. A CCD detection head for detecting the workpiece conveyed on the conveyor line is provided on the fine-tuning frame, realizing the detection of whether the cover plate on the PCB board in the carrier has not been removed.

[0009] Preferably, a rotary mounting plate is fixed on one side of the de-soldering and fixing seat. The rotary mounting plate is fixed on the rotating shaft at the end of the six-axis robotic arm. A fixing block is provided at the extended end of one end of the rotary mounting plate. A pressure sensor is installed on the fixing block, and the pressure sensor can be used to detect the force of the de-soldering gripper when de-soldering the solder joints.

[0010] Preferably, the quick-change de-soldering gripper obliquely passes through the inner side of the de-soldering and fixing seat, and the quick-change de-soldering gripper is locked and fixed by the fixing screws on the de-soldering and fixing seat, which is beneficial for quickly replacing the de-soldering gripper without affecting the de-soldering work.

[0011] Preferably, a PCB positioning carrier for positioning and conveying the PCB board is conveyed on the conveyor line. A cover plate collection box for removing and collecting the cover plate on the PCB board is provided on one side of the conveyor line and at the bottom of the three-axis moving module, realizing clamping and collecting the cover plate covered on the PCB board in the cover plate collection box for easy de-soldering of the solder joints.

[0012] Compared with the prior art, the technical effects and advantages of the present utility model: For this automatic solder joint inspection device of a lithium battery PCB board, through the combined use of a rotating mounting plate, a fixed block, a pressure sensor provided on the upper rotation of a six-axis robotic arm, and a quick-change gripper penetrating and fixed in a gripper fixing seat, after the workpiece in the PCB positioning carrier conveyed by the conveyor line is conveyed to a specified position, the position of the quick-change gripper is precisely adjusted by the six-axis robotic arm according to the position of the solder joints on the PCB board, and the quick-change gripper on the gripper fixing seat is adjusted at various tilting angles by using the rotating shaft of the six-axis robotic arm, so that the quick-change gripper is adjusted to an appropriate angle for the solder joint pulling action, thereby enabling the solder joint pulling action to be performed at different positions and angles on the PCB board, and further realizing the all-round wire pulling treatment of the PCB board, and further improving the wire pulling progress.

[0013] Through the combined installation among the quick-change gripper, the gripper fixing seat, and the rotating mounting plate, when the quick-change gripper is installed, it can directly pass through the gripper fixing seat and be locked by covering the end part with its cover plate. At the same time, when the quick-change gripper needs to be replaced, the quick-change gripper can be directly pulled out from the gripper fixing seat by pulling, and a new quick-change gripper is inserted into the gripper fixing seat, thus realizing the quick disassembly and replacement of the quick-change gripper. Therefore, this disassembly and assembly method can save the replacement time of the quick-change gripper, and further shorten the replacement time without affecting the efficiency of the solder joint pulling of the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a structural schematic diagram of the present utility model;

[0015] Figure 2 is a structural schematic diagram of the three-axis moving module of the present utility model;

[0016] Figure 3 is a structural schematic diagram of the two-way track module of the present utility model;

[0017] Figure 4 is a structural schematic diagram of the gripper fixing seat of the present utility model.

[0018] In the figure: 1, processing machine table; 2, conveyor line; 3, three-axis moving module; 4, two-way track module; 5, six-axis robotic arm; 6, gripper fixing seat; 7, quick-change gripper; 8, mounting plate; 9, disassembly and assembly quick-change plate; 10, clamping jaw cylinder; 11, fine-tuning frame; 12, CCD detection head; 13, rotating mounting plate; 14, fixed block; 15, pressure sensor; 16, PCB positioning carrier; 17, cover plate collection box. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4 , the present utility model provides a technical solution: an automatic solder joint inspection device for a lithium battery PCB board, including a processing machine table 1 and a conveyor line 2 on the processing machine table 1 for feeding and conveying the PCB workpiece. A UV curing conveyor line that is synchronously conveyed and moved with the conveyor line 2 is provided on the front side of the conveyor line 2, and a UV curing box for curing the solder joints of the PCB board is movably arranged on the UV curing conveyor line. The UV curing conveyor line can convey the uncured PCB board to the wire-pulling station for wire-pulling solder joint treatment after curing, which can reduce the defective rate of the PCB board. A three-axis moving module 3 for adjusting and moving in three directions and pneumatically clamping and placing the workpiece on the conveyor line 2 for conveying is provided on the rear side of the starting end of the conveyor line 2. The three-axis moving module 3 includes an X-axis moving track, a Y-axis moving track, and a Z-axis moving track, and the three are controlled and coordinated with each other through a control center to perform three different-direction movements to clamp, grab, and collect the cover plate. A two-way track module 4 for multi-directional movement detection of the workpiece conveyed on the conveyor line 2 is provided on one side of the three-axis moving module 3. The two-way track module 4 includes an X-axis track and a Y-axis track, and the two are coordinated by an external background control center to move the position of the CCD detection head 12 to realize the detection of the solder joints of the PCB board.

[0021] A six-axis robotic arm 5 for multi-directional rotation adjustment of the position of the solder joints on the workpiece is provided on one side of the two-way track module 4. The six-axis robotic arm 5 can precisely control each of its moving axes, so it can remove solder joints with extremely high precision and consistency. To ensure that each solder joint is correctly processed and avoid damage to the circuit board, the six-axis robotic arm 5 can move freely in three-dimensional space, which enables it to handle solder joints of different sizes and shapes, whether in different areas of the PCB board or in complex circuit board designs. Its flexible movement range can help it enter narrow or complex areas for solder joint removal work. A pick-and-grab fixing seat 6 for picking and grabbing the solder joints of the workpiece and performing quick disassembly and replacement is rotatably arranged on the end rotating shaft of the six-axis robotic arm 5 to realize the disassembly, installation, and fixation of the quick-change pick-and-grab 7. A quick-change pick-and-grab 7 for picking and grabbing the solder joints of the PCB board positioned and conveyed on the conveyor line 2 by a carrier is provided on the pick-and-grab fixing seat 6 to realize the solder joint removal operation on the PCB board.

[0022] At the front end of the Z-direction moving track of the three-axis moving module 3, there is a mounting plate 8 with an L-shaped structure. One side of the mounting plate 8 extends with an end part provided with a disassembly and replacement quick-change plate 9. At the bottom of the disassembly and replacement quick-change plate 9, there is a quick-change mechanism for quickly disassembling and assembling the clamping jaw cylinder 10. The quick-change mechanism includes a quick-change button and a quick-change disassembly plate. At the lower end surface of the disassembly and replacement quick-change plate 9, there is a clamping jaw cylinder 10 for clamping the cover plate. The clamping jaw cylinder 10 is fixed at the bottom of the quick-change disassembly plate. On the Y-axis moving track of the two-way track module 4, there is a sliding fine-tuning frame 11 driven. The fine-tuning frame 11 includes a fine-tuning component for adjusting the small angle and vertical distance of the CCD detection head 12. On the fine-tuning frame 11, there is a CCD detection head 12 for detecting the workpieces conveyed on the conveyor line 2, which can detect whether the solder joints on the conveyed PCB board are cured and whether the cover plate is removed.

[0023] On one side of the gripping and fixing seat 6, there is a rotating mounting plate 13 fixed on the rotating shaft at the end of the six-axis robotic arm 5. One end of the rotating mounting plate 13 extends outward with a fixing block 14. The pressure sensor 15 can be fixed on one side of the fixing block 14. The pressure sensor 15 is installed on the fixing block 14, and one end of the pressure sensor 15 is attached to the surface of one end of the quick-change gripper 7, so that the force of the quick-change gripper 7 can be fed back through the pressure sensor 15 to the specific wire-pulling force, and the wire-pulling force can be adjusted adaptively from the background rear center. The quick-change gripper 7 obliquely passes through the inside of the gripping and fixing seat 6, and the quick-change gripper 7 is locked and fixed by the fixing screws on the gripping and fixing seat 6. On the conveyor line 2, there is a PCB positioning carrier 16 for conveying and positioning the PCB board. On one side of the conveyor line 2 and at the bottom of the three-axis moving module 3, there is a cover plate collection box 17 for removing and collecting the cover plates on the PCB board, which can clamp and remove the protective cover plates on the soldered PCB boards for convenient detection and wire-pulling processing.

[0024] Specifically, during use, first, the PCB board after being welded at the welding station is conveyed on the conveyor line 2 by the PCB positioning carrier 16, and the PCB positioning carrier 16 is moved to the vertical bottom end of the jaw cylinder 10 provided on the three-axis moving module 3 under the conveyance of the conveyor line 2. Subsequently, the three-axis moving module 3 is controlled by the control center to move the jaw cylinder 10 to the vertical upper end of the PCB positioning carrier 16, and the jaw cylinder 10 is used to clamp the cover plate covering the PCB board on the PCB positioning carrier 16. After the cover plate is clamped, the jaw cylinder 10 is moved back to the vertical upper end of the cover plate collection box 17 by using the three-axis moving module 3, and the jaw cylinder 10 is made to place and collect the cover plate in the cover plate collection box 17. At this time, the PCB positioning carrier 16 continues to move to the vertical upper end of the CCD detection head 12 provided on the two-way track module 4, and the CCD detection head 12 is made to slide horizontally through the control of the two-way track module 4 to detect whether the solder joints on the PCB board in the PCB positioning carrier 16 are solidified, which can reduce the generation of defective rates. Subsequently, after the workpiece in the PCB positioning carrier 16 conveyed by the conveyor line 2 is conveyed to a specified position, the position of the quick-change gripper 7 is precisely adjusted according to the positions of the solder joints on the PCB board by using the six-axis robotic arm 5, and the quick-change gripper 7 on the gripper fixing seat 6 is adjusted at various tilting angles by using the rotating shaft of the six-axis robotic arm 5, so that the quick-change gripper 7 is adjusted to an appropriate angle to perform the solder joint pulling action, thereby enabling the solder joint pulling action to be performed at different positions and angles on the PCB board, and further realizing the all-round wire pulling treatment of the PCB board, and further improving the wire pulling progress.

[0025] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic solder joint inspection device for a lithium battery PCB board, comprising a processing machine table (1) and a conveyor line (2) on the processing machine table (1) for feeding and conveying PCB workpieces, characterized in that: There is a three-axis moving module (3) provided at the rear side of the starting end of the conveyor line (2), which can move and adjust in three directions and pneumatically clamp and place workpieces on the conveyor line (2) for conveying. There is a two-way track module (4) provided on one side of the three-axis moving module (3) for multi-directional movement detection of the workpieces conveyed on the conveyor line (2). There is a six-axis robotic arm (5) provided on one side of the two-way track module (4) for multi-directional rotational adjustment of the position of the solder joints on the workpiece. A pick-and-grasp fixing seat (6) for picking and grasping the solder joints of the workpiece and for quick disassembly and replacement is rotatably provided on the end rotating shaft of the six-axis robotic arm (5). A quick-change pick-and-grasp (7) for picking and grasping the solder joints of the PCB board positioned and conveyed on the conveyor line (2) by a carrier is provided on the pick-and-grasp fixing seat (6).

2. The automatic solder joint inspection device for a lithium battery PCB board according to claim 1, wherein: There is an installation plate (8) with an L-shaped structure provided at the front end of the Z-direction moving track of the three-axis moving module (3). The installation plate (8) extends towards one side, and a disassembly and replacement quick-change plate (9) is provided at the end. A jaw cylinder (10) for clamping and picking up the cover plate is provided on the lower end surface of the disassembly and replacement quick-change plate (9).

3. The automatic solder joint inspection device for a lithium battery PCB board according to claim 1, wherein: A fine-tuning frame (11) is driven to slide on the Y-axis moving track of the two-way track module (4). A CCD detection head (12) for detecting the workpieces conveyed on the conveyor line (2) is provided on the fine-tuning frame (11).

4. An automatic solder joint inspection device for a lithium battery PCB board according to claim 1, characterized in that: A rotary mounting plate (13) is fixed on one side of the pick-and-grasp fixing seat (6). The rotary mounting plate (13) is fixed on the rotating shaft at the end of the six-axis robotic arm (5). A fixing block (14) extends outward from one end of the rotary mounting plate (13). A pressure sensor (15) is installed on the fixing block (14).

5. An automatic solder joint inspection device for a lithium battery PCB board according to claim 1, characterized in that: The quick-change pick-and-grasp (7) obliquely passes through the inside of the pick-and-grasp fixing seat (6), and the quick-change pick-and-grasp (7) is locked and fixed by the fixing screws on the pick-and-grasp fixing seat (6).

6. The automatic solder joint inspection device for a lithium battery PCB board according to claim 1, characterized in that: A PCB positioning carrier (16) for positioning and conveying the PCB board is conveyed on the conveyor line (2). A cover plate collection box (17) for removing and collecting the cover plates on the PCB board is provided on one side of the conveyor line (2) and at the bottom of the three-axis moving module (3).

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