Laser detection equipment for USB connector

Abstract

The invention provides USB connector laser detection equipment, and particularly relates to the technical field of connector laser detection, the USB connector laser detection equipment comprises a main cabinet, a support frame body and a control case which are arranged at the top of the main cabinet, and a laser detection unit installed at the top of the support frame body, and a linkage light shielding mechanism is in linkage cooperation with an automatic inspection mechanism. And when the USB connector moves to a laser detection position, the linkage light shielding mechanism forms a light shielding structure which surrounds the USB connector and is attached to the outer wall of the lower end of the laser head. The problems that in existing USB laser detection equipment, the manual inspection efficiency is low, external stray light interferes with the detection precision, and data misjudgment is caused by pin impurities are solved, so that automatic accurate inspection and laser detection of the USB connector are achieved, and the reliability of detection data and the safety of the detection process are guaranteed.

Description

Technical Field

[0001] This invention provides a USB connector laser inspection device, specifically relating to the field of connector laser inspection technology. Background Technology

[0002] As a core interface component of electronic devices, the bending accuracy and appearance integrity of the pins of USB connectors directly affect the connection stability. Due to its advantages of non-contact and fast response, laser detection has become a key technology for pin detection of such components. The corresponding detection equipment needs to meet the requirements of efficient and accurate screening in mass production.

[0003] The Chinese utility model patent with announcement number CN220187656U discloses a connector pin detection device, which includes a base, a horizontal drive mechanism, a laser detection mechanism, a placement stage and a protective cover. The horizontal drive mechanism drives the slide stage through a cylinder to move the placement stage along the slide rail, so that the pins pass through the laser detection mechanism in sequence to realize the bending angle detection. The protective cover is used to prevent foreign objects from entering and to ensure personnel safety.

[0004] However, this technology has obvious drawbacks: First, the protective cover only provides basic protection and does not form a sealed light-shielding structure for the laser detection area. External ambient light can easily penetrate the observation port and the gap between the side plates, interfering with the laser light path and causing deviations in the detection data. Second, it lacks a pin cleaning design. Dust, debris, and other impurities attached to the surface of the pins during the production process can block the laser or interfere with the reflected signal, leading to misjudgments. Third, it does not achieve linkage between the inspection action and the light shielding. There is no targeted optical path protection in the detection process, making it difficult to further improve the detection accuracy and process continuity. Summary of the Invention

[0005] In view of the deficiencies of the existing technology, the present invention provides a USB connector laser inspection device, which can effectively solve the related technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention discloses a USB connector laser inspection device, including a main unit cabinet, a support frame and control box set on the top of the main unit cabinet, and a laser inspection unit installed on the top of the support frame. The laser inspection unit includes a laser head, and also includes an automatic inspection mechanism, a linkage light-shielding mechanism and auxiliary processing components set on the top of the main unit cabinet and located below the laser head. The automatic inspection mechanism is used to horizontally move the USB connector to be tested to a position directly below the laser head. The linkage light-shielding mechanism works in conjunction with the automatic inspection mechanism. When the USB connector moves to the laser detection position, the linkage light-shielding mechanism forms a light-shielding structure that surrounds the USB connector and fits against the lower outer wall of the laser head. The auxiliary processing component is positioned on the translation path of the USB connector.

[0007] Preferably, the linkage light-shielding mechanism includes a linkage curved plate fixedly installed on the outer wall of one side of the moving carrier plate of the automatic inspection mechanism. A drive rack is fixed at the end of the linkage curved plate away from the moving carrier plate. A convex slot frame is fixedly installed on the top of the main cabinet. A double gear set is rotatably connected to the side of the convex slot frame away from the laser detection unit. A staggered rack is meshed on both sides of the double gear set. The staggered rack is slidably disposed in the guide groove of the convex slot frame. Light-shielding covers are fixed at the ends of the staggered racks away from the double gear set. When the two light-shielding covers are closed, a complete cylindrical structure is formed.

[0008] Preferably, the dual gear set consists of a large gear and a small gear arranged coaxially, with the small gear located above the large gear and on the translational path of the drive rack, and capable of forming a meshing transmission structure with it.

[0009] Preferably, guide pulleys are rotatably provided on both the upper and lower sides of the sliding part of the misaligned rack and the convex groove frame, and the guide pulleys are slidably engaged in the guide groove.

[0010] Preferably, the bottom of the light shield is provided with an opaque elastic sealing sheet, which is used to fit against the outer wall of the loading fixture of the automatic inspection mechanism.

[0011] Preferably, the light shield has a semi-cylindrical structure.

[0012] Preferably, the automatic inspection mechanism includes a support base plate fixedly installed on the top of the main unit cabinet, a servo motor installed on one side of the top of the support base plate, two limiting guide rails fixedly installed on both sides of the top surface of the support base plate, a movable carrier plate slidably fitted to the limiting guide rails, and a loading fixture fixed on the top of the movable carrier plate. The servo motor drives the movable carrier plate to translate along the limiting guide rails through a transmission optical shaft.

[0013] Preferably, the auxiliary processing component includes a suspension plate fixed to the outer wall of one side of the support frame and a trapezoidal air nozzle fixed to the lower end of the suspension plate. The trapezoidal air nozzle is located directly above the translation path of the USB connector, and the top of the trapezoidal air nozzle is connected to an air extraction pipe, which is connected to an external negative pressure dust removal device.

[0014] Preferably, the suspension plate is a telescopic and adjustable structure used to adjust the height of the trapezoidal air nozzle from the USB connector.

[0015] Preferably, the top of the trapezoidal nozzle is narrow and the bottom is flared, and the narrow part is connected to the suction pipe.

[0016] In summary, the technical solution provided in this application has at least one of the following advantages compared with the prior art: This USB connector laser inspection equipment solves the problems of low efficiency of manual inspection, external stray light interference with detection accuracy, and data misjudgment caused by pin impurities in existing USB laser inspection equipment by setting up an automatic inspection mechanism, a linkage light-shielding mechanism and auxiliary processing components. In this way, it realizes the automated and accurate inspection and laser inspection of USB connectors, ensuring the reliability of inspection data and the safety of the inspection process. The automatic inspection mechanism uses a toothless lead screw and lead nut transmission, combined with a limit guide rail and servo motor. Compared with the traditional transmission structure, which has problems such as high noise and large inspection positioning deviation, this method enables low-noise operation during the inspection process, while ensuring the alignment of the USB connector and the laser detection area, thus improving the stability of the inspection. The linkage light-shielding mechanism, together with the guide pulley and elastic sealing sheet, can realize the synchronous linkage between the light-shielding structure and the inspection action without the need for an additional drive source, forming a fully circumferential sealed light-shielding chamber, which not only eliminates stray light interference, but also avoids damage to the USB connector. The auxiliary processing component adopts a trapezoidal air nozzle negative pressure suction structure. Compared with the traditional manual impurity removal method and the problem of not being able to efficiently remove impurities attached to the pin surface, this method can effectively remove impurities from the pins of the USB connector by negative pressure, avoid impurities interfering with the laser detection optical path, and ensure the accuracy of the detection data. Attached Figure Description

[0017] Figure 1 This is a front-view perspective view of the present invention. Figure 2 This is a partial side-view three-dimensional structural diagram of the relevant components at the laser head in this invention; Figure 3 This is a partial three-dimensional structural diagram of the relevant components at the laser head in this invention; Figure 4 This is a partial three-dimensional structural diagram of the relevant components of the automatic inspection mechanism in this invention; Figure 5 This is a partial three-dimensional structural diagram of the relevant components of the automatic inspection mechanism in this invention; Figure 6 This is a partial top view of the relevant components of the automatic inspection mechanism in this invention; Figure 7 This is a partially exploded three-dimensional structural view of the relevant components of the automatic inspection mechanism in this invention; Figure 8 This is a partial three-dimensional structural diagram of the relevant components in the auxiliary processing component of the present invention; Figure 9 This is a partial three-dimensional structural diagram of the relevant components at the auxiliary processing component in this invention from another perspective.

[0018] The labels in the diagram represent: 1. Main unit cabinet; 101. Support frame; 11. Control chassis; 12. Laser detection unit; 121. Laser head; 2. Automatic inspection feeding mechanism; 21. Support base plate; 22. Servo motor; 23. Drive optical shaft; 24. Moving carrier plate; 25. Loading fixture; 26. Limiting guide rail; 27. Guide slider; 3. Linked light-shielding mechanism; 31. Linked curved plate; 32. Drive rack; 33. Convex groove frame; 34. Double gear set; 35. Offset rack; 351. Guide pulley; 36. Light-shielding cover; 361. Sealing plate; 4. Auxiliary processing components; 41. Suspension plate; 42. Trapezoidal air nozzle; 43. Air extraction pipe. Detailed Implementation

[0019] The present invention will be further described below with reference to embodiments.

[0020] As a first embodiment of this application: Reference Appendix Figures 1 to 4 As shown, a USB connector laser inspection device includes a main unit cabinet 1, a support frame 101 disposed on the top of the main unit cabinet 1, a control box 11, and a laser inspection unit 12 installed on the top of the support frame 101. The laser inspection unit 12 includes a laser head 121.

[0021] Furthermore, the aforementioned USB connector laser inspection equipment also includes an automatic inspection mechanism 2 located at the top of the main unit cabinet 1 and below the laser head 121, which is used to horizontally move the USB connector to be tested to directly below the laser head 121. The automatic inspection mechanism 2 includes a support base plate 21 fixedly installed on the top of the main unit cabinet 1, a servo motor 22 installed on one side of the top of the support base plate 21, two limiting guide rails 26 fixedly installed on both sides of the top surface of the support base plate 21, a movable carrier plate 24 slidably engaged with the limiting guide rails 26, and a loading fixture 25 fixed on the top of the movable carrier plate 24. The loading fixture 25 is used to load the USB connector to be tested, and after the USB connector is loaded, the end with the pins faces vertically upwards for subsequent testing. Its specific structure can adopt the known fixture structure in the prior art, as long as it can meet the requirements of fixing the USB connector. The servo motor 22 drives the moving carrier plate 24 to translate along the limiting guide rail 26 via the transmission optical shaft 23. The transmission optical shaft 23 is configured as a toothless lead screw, and the bottom of the moving carrier plate 24 is equipped with a nut that drives and cooperates with the transmission optical shaft 23. By utilizing the transmission structure of the toothless lead screw and nut, not only can the transmission noise be reduced, but the transmission accuracy can also be guaranteed to the maximum extent to better meet the requirements of USB connector laser detection. Specifically, the output shaft of the servo motor 22 is fixedly connected to one end of the transmission optical shaft 23 through a flexible coupling, and the other end of the transmission optical shaft 23 is rotatably supported on the bearing base plate 21 through a bearing seat. The nut is fixed in the mounting groove at the bottom of the moving carrier plate 24 by bolts, and the mating surface of the nut and the toothless lead screw is coated with grease to further reduce the transmission resistance.

[0022] It is worth noting that the control signal for the servo motor 22 is output from the control chassis 11. When the moving carrier 24 carrying the USB connector arrives directly below the laser head 121, the control chassis 11 receives a feedback signal from the limit sensor and controls the servo motor 22 to stop running. This ensures precise alignment between the USB connector and the laser detection area and prevents the detection position from shifting. As a second embodiment of this application: Reference Appendix Figures 1 to 3 , Figures 5 to 7 As shown, the above-mentioned USB connector laser inspection equipment also includes a linkage light-shielding mechanism 3. The linkage light-shielding mechanism 3 works in conjunction with the automatic inspection mechanism 2. When the USB connector moves to the laser inspection position, the linkage light-shielding mechanism 3 forms a light-shielding structure that surrounds the USB connector and is attached to the lower outer wall of the laser head 121.

[0023] Specifically, the aforementioned linkage light-shielding mechanism 3 includes a linkage curved plate 31 fixedly installed on the outer wall of one side of the movable carrier plate 24 of the automatic inspection mechanism 2. A drive rack 32 is fixed at one end of the linkage curved plate 31 away from the movable carrier plate 24. A convex slot frame 33 is fixedly installed on the top of the main unit cabinet 1. A double gear set 34 is rotatably connected to the side of the convex slot frame 33 away from the laser detection unit 12. A misaligned rack 35 is meshed on both sides of the double gear set 34. The double gear set 34 is composed of a large gear and a small gear arranged coaxially. The small gear is located above the large gear and is located on the translational movement path of the drive rack 32, and can form a meshing transmission structure with it. The staggered rack 35 is slidably disposed in the guide groove of the convex slot frame 33, and the ends of the staggered rack 35 away from the double gear set 34 are all fixed with light shields 36. The light shields 36 are made of opaque hard plastic material, which combines lightweight and structural stability, avoids the impact of self-weight on the smoothness of linkage action, and can effectively block external light from penetrating; the light shields 36 are semi-cylindrical structures, and the two light shields 36 form a complete cylindrical structure when closed.

[0024] As a constraint, the linkage curved plate 31 and the movable carrier plate 24 are precisely calibrated to ensure that the extension direction of the drive rack 32 is consistent with the translation direction and is highly compatible with the height of the dual gear set 34. When the movable carrier plate 24 translates, the drive rack 32 first engages with the pinion gear, completes the preset stroke before the USB connector is in place, and drives the misaligned rack 35 to slide symmetrically, so that the two light shields 36 close into a cylindrical structure. At this time, the top of the light shield 36 is attached to the laser head 121, and the bottom is attached to the loading fixture 25 through the sealing plate 361, enclosing the closed chamber to achieve full circumferential light shielding and avoid stray light interference and laser scattering risks.

[0025] Furthermore, guide pulleys 351 are rotatably provided on both the upper and lower sides of the sliding part of the misaligned rack 35 and the convex groove frame 33. The guide pulleys 351 are slidably engaged in the guide groove. The function of the guide pulleys 351 is to convert the sliding friction between the misaligned rack 35 and the guide groove into rolling friction, which reduces wear during structural operation and extends the service life of the components. On the other hand, it reduces sliding resistance and ensures the smoothness of the closing action of the light shield 36.

[0026] Furthermore, the bottom of the light shield 36 is provided with an opaque elastic material sealing sheet 361. The sealing sheet 361 is used to fit the outer wall of the loading fixture 25 of the automatic inspection mechanism 2. The elastic material sealing sheet 361 can not only adapt to different outer wall tolerances of the loading fixture 25 and ensure the fit and sealing, but also avoid scratches to the loading fixture 25 or USB connector caused by hard contact, and at the same time buffer the impact force when the light shield 36 is closed.

[0027] As a third embodiment of this application: like Figures 1 to 3 , Figure 8 , Figure 9 As shown, the aforementioned USB connector laser inspection device also includes an auxiliary processing component 4, which is disposed on the translation path of the USB connector.

[0028] Specifically, the auxiliary processing component 4 includes a suspension plate 41 fixed to the outer wall of one side of the support frame 101 and a trapezoidal air nozzle 42 fixed to the lower end of the suspension plate 41. The trapezoidal air nozzle 42 is located directly above the translation path of the USB connector, and the top of the trapezoidal air nozzle 42 is connected to an air extraction pipe 43, which is connected to an external negative pressure dust removal device.

[0029] Additionally, a position sensor is installed on the side of the trapezoidal air nozzle 42 near the initial position of the automatic inspection mechanism 2. This sensor detects the position of the USB connector and transmits the detected position signal to the controller of the external negative pressure dust removal device. The detection end face of the sensor is flush with the lower end face of the trapezoidal air nozzle 42, and the detection direction is perpendicular to the translation path of the USB connector. This ensures that when the USB connector is detected, the trapezoidal air nozzle 42 is precisely aligned with the pin area. Specifically, when the automatic inspection mechanism 2 carries the USB connector and moves past the trapezoidal air nozzle 42, the external negative pressure dust removal device is activated through the sensor and controller. The trapezoidal air nozzle 42 performs negative pressure suction on the pin area of ​​the USB connector to remove dust, debris, and other impurities attached to the pin surface. This prevents impurities from obstructing the laser path or interfering with the reflected signal, ensuring the accuracy of the detection data.

[0030] Furthermore, the suspension plate 41 is a telescopic and adjustable structure used to adjust the height of the trapezoidal nozzle 42 from the USB connector. The telescopic and adjustable suspension plate 41 is set to adapt to the height of different models of USB connectors, so that the trapezoidal nozzle 42 is always kept within the optimal suction distance range, avoiding insufficient suction effect due to excessive distance, or interference with the USB connector due to excessive distance.

[0031] Furthermore, the top of the trapezoidal nozzle 42 is narrow and the bottom is flared, and the narrow part is connected to the suction pipe 43. The trapezoidal nozzle 42 has a structure that is narrow at the top and wide at the bottom. Utilizing the principle of speed increase through narrowing in fluid mechanics, the narrow part can increase the airflow velocity and enhance the suction force. The flared part can expand the suction coverage area, ensuring that impurities in the pin area of ​​the USB connector are fully suctioned, while avoiding damage to the pins caused by excessive local negative pressure.

[0032] The complete working and usage principles of the above embodiments one to three are as follows: After starting the device, load the USB connector to be tested into the loading fixture 25 of the automatic inspection mechanism 2, ensuring that the pinned end of the USB connector is vertically upward. The control chassis 11 outputs a control signal to the servo motor 22, which drives the moving carrier plate 24 to move smoothly along the limit guide rail 26 through the transmission optical shaft 23 of the toothless lead screw structure and the lead screw nut.

[0033] When the moving carrier plate 24 carrying the USB connector passes under the auxiliary processing component 4, the position sensor on one side of the trapezoidal air nozzle 42 detects the USB connector and transmits a signal to the negative pressure dust removal device controller, triggering the device to start. The negative pressure dust removal device continues to run for a preset time until the USB connector is completely removed from the coverage area of ​​the trapezoidal air nozzle 42. At this time, the moving carrier plate 24 continues to move horizontally, and the linkage curved plate 31 drives the drive rack 32 to mesh with the double gear set 34, starting the light-shielding linkage action to ensure that the light-shielding detection stage is entered after the impurity removal is completed, so as to avoid the impurity residue affecting the detection accuracy.

[0034] Simultaneously, as the moving carrier plate 24 continues to translate, the linkage curved plate 31 on one side drives the drive rack 32 to move synchronously, and the drive rack 32 meshes with the pinion of the double gear set 34. As the moving carrier plate 24 advances, the double gear set 34 rotates and drives the staggered racks 35 on both sides to slide symmetrically along the guide groove of the convex slot frame 33, and the guide pulley 351 reduces the sliding resistance.

[0035] When the USB connector reaches the detection position directly below the laser head 121, the limit sensor sends a signal to the control box 11, and the servo motor 22 stops running. At this time, the two semi-cylindrical light shields 36 are closed to form a complete cylindrical structure. The top is attached to the lower outer wall of the laser head 121, and the bottom is attached to the loading fixture 25 through the elastic sealing sheet 361, forming a closed detection chamber.

[0036] Subsequently, the laser detection unit 12 starts the detection, and emits a laser to the pins of the USB connector through the laser head 121 for detection; after the detection is completed, the servo motor 22 rotates in reverse to drive the moving carrier plate 24 to reset, and drives the rack 32 to pull the double gear set 34 in reverse, opening the light shield 36 and completing one detection process.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. It should be understood that in this application, the rotating, sliding, meshing, belt-driven and other moving parts are well lubricated and not prone to slippage or wear, and each of them is provided with a corresponding protective shell. However, in the accompanying drawings of this application, the connection state of each moving part is not shown. In addition, it should be understood that each part in this application is made of metal or plastic material with adaptable strength in the relevant field to ensure that its structural rigidity meets the actual requirements.

Claims

1. A USB connector laser inspection device, comprising a main unit cabinet (1), a support frame (101) disposed on the top of the main unit cabinet (1), a control chassis (11), and a laser inspection unit (12) mounted on the top of the support frame (101), wherein the laser inspection unit (12) includes a laser head (121), characterized in that, It also includes an automatic inspection mechanism (2), a linkage light-shielding mechanism (3), and an auxiliary processing component (4) located on the top of the main unit cabinet (1) and below the laser head (121). The automatic inspection mechanism (2) is used to horizontally move the USB connector to be tested to a position directly below the laser head (121); The linkage light-shielding mechanism (3) works in conjunction with the automatic inspection mechanism (2). When the USB connector moves to the laser detection position, the linkage light-shielding mechanism (3) forms a light-shielding structure that surrounds the USB connector and is attached to the lower outer wall of the laser head (121). The auxiliary processing component (4) is located on the translation path of the USB connector.

2. The USB connector laser inspection device according to claim 1, characterized in that, The linkage light-shielding mechanism (3) includes a linkage curved plate (31) fixedly installed on the outer wall of one side of the movable carrier plate (24) of the automatic inspection mechanism (2). A drive rack (32) is fixed at one end of the linkage curved plate (31) away from the movable carrier plate (24). A convex slot frame (33) is fixedly installed on the top of the main cabinet (1). A double gear set (34) is rotatably connected to the side of the convex slot frame (33) away from the laser detection unit (12). A misaligned rack (35) is meshed on both sides of the double gear set (34). The misaligned rack (35) is slidably installed in the guide groove of the convex slot frame (33). A light shield (36) is fixed at the end of the misaligned rack (35) away from the double gear set (34). The two light shields (36) form a complete cylindrical structure after being closed.

3. The USB connector laser inspection device according to claim 2, characterized in that, The double gear set (34) consists of a large gear and a small gear arranged coaxially. The small gear is located above the large gear and is located on the translational motion path of the drive rack (32), and can form a meshing transmission structure with it.

4. The USB connector laser inspection device according to claim 3, characterized in that, The misaligned rack (35) and the sliding part of the convex groove frame (33) are both provided with guide pulleys (351) that rotate and fit in the guide groove.

5. The USB connector laser inspection device according to claim 4, characterized in that, The bottom of the light shield (36) is provided with an opaque elastic material sealing sheet (361), which is used to fit the outer wall of the loading fixture (25) of the automatic inspection mechanism (2).

6. The USB connector laser inspection device according to claim 5, characterized in that, The light shield (36) has a semi-cylindrical structure.

7. The USB connector laser inspection device according to claim 1, characterized in that, The automatic inspection mechanism (2) includes a support base plate (21) fixedly installed on the top of the main cabinet (1), a servo motor (22) installed on one side of the top of the support base plate (21), two limiting guide rails (26) fixedly installed on both sides of the top surface of the support base plate (21), a movable carrier plate (24) slidably fitted with the limiting guide rails (26), and a loading fixture (25) fixed on the top of the movable carrier plate (24). The servo motor (22) drives the movable carrier plate (24) to translate along the limiting guide rails (26) through the transmission optical shaft (23).

8. The USB connector laser inspection device according to claim 1, characterized in that, The auxiliary processing component (4) includes a suspension plate (41) fixed to the outer wall of one side of the support frame (101) and a trapezoidal air nozzle (42) fixed to the lower end of the suspension plate (41). The trapezoidal air nozzle (42) is located directly above the translation path of the USB connector, and the top of the trapezoidal air nozzle (42) is connected to an air extraction pipe (43), which is connected to an external negative pressure dust removal device.

9. The USB connector laser inspection device according to claim 8, characterized in that, The suspension plate (41) is a telescopic and adjustable structure used to adjust the height of the trapezoidal air nozzle (42) from the USB connector.

10. The USB connector laser inspection device according to claim 9, characterized in that, The trapezoidal nozzle (42) has a narrow top and a wide bottom, and the narrow part is connected to the suction pipe (43).

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