Self-supply liquid contact cleaning device and cleaning detection equipment

Abstract

The application provides a self-supplement liquid contact type cleaning device deep cavity cleaning detection equipment, and belongs to the field of optical communication.The device comprises a contact cleaning mounting frame, a rotating cleaning rod group and a contact cleaning transverse driving unit.The contact cleaning transverse driving unit drives the rotating cleaning rod group to move transversely and reciprocally, thereby achieving plugging and unplugging at the deep cavity of a product.The cleaning head of the rotating cleaning rod group can rotate controllably, thereby achieving cleaning of the end face of an optical fiber at the deep cavity of the product.The application adopts a self-rotating long rod to drive a cleaning cotton swab to contact clean the end face in the deep cavity of the product, realizes accurate end face cleaning through guiding and locking, and sets a cleaning liquid supplementing design, so that the cotton swab can be supplemented with alcohol infiltration.The scheme well satisfies the cleaning of the end face in the deep cavity of the product, and is convenient for popularization and application in the field of optical communication, the field of 3C and the field of semiconductors, etc.

Description

Technical Field

[0001] This invention belongs to the field of optical communication, specifically relating to a self-lubricating liquid contact cleaning device and cleaning and testing equipment for the end face of a deep cavity optical fiber. Background Technology

[0002] In the field of optical communication, the quality of the fiber endface directly affects the transmission efficiency of optical signals. For optical modules containing panda-type polarization-maintaining fibers, the core indicators for endface inspection typically include: endface cleanliness and surface defects. Accurately obtaining this information is a prerequisite for ensuring product performance and reliability.

[0003] See Figure 1 The optical fiber tip of the optical module is inserted into one end of the deep cavity A of the guide housing. For products with optical fiber end faces at the bottom of the deep cavity, due to the depth of the cavity and its narrow cross-section, the testing equipment can only approach the bottom end face from the cavity opening by probing with the front end. More importantly, this end face is not perpendicular to the cavity axis, but is an angled slope.

[0004] To accurately obtain the morphological information of these end faces, optical inspection is required. However, the cleanliness of these end faces must be ensured before inspection to prevent foreign contamination from affecting the inspection results. However, existing technologies lack a solution for cleaning the inner end faces of deep cavity optical modules. Therefore, a solution is needed to design that can perform contact cleaning of the inner end faces of the deep cavity of the optical module, ensuring both proper insertion and removal from the deep cavity for contact cleaning to remove stubborn contaminants, and allowing for replacement of the cleaning head and replenishment of cleaning fluid at any time. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a self-hydrating contact cleaning device and a cleaning and testing equipment for the end face of deep cavity optical fibers, which can solve the above-mentioned problems.

[0006] A self-hydrating contact cleaning device is used for surface cleaning of the end face of a deep cavity optical fiber. The self-hydrating contact cleaning device includes a contact cleaning mounting frame, a rotating cleaning rod assembly, a contact cleaning lateral movement drive unit, a swing assembly, and an alcohol tank. The rotating cleaning rod assembly is installed on the contact cleaning mounting frame. The contact cleaning lateral movement drive unit drives the rotating cleaning rod assembly to move laterally back and forth to achieve insertion and removal in the deep cavity of the product. The cleaning head of the rotating cleaning rod assembly rotates controllably to clean the end face of the optical fiber in the deep cavity of the product. The swing assembly is used to drive the end of the rotating cleaning rod assembly to swing and immerse itself in the alcohol tank to get liquid or to hold the product to be cleaned horizontally.

[0007] Furthermore, the rotating cleaning rod assembly includes a cleaning rod body, a clamping cap, replaceable cotton swabs, and a rod body rotation driver. One end of the cleaning rod body is connected to the rod body rotation driver, and the other end of the cleaning rod body is connected to the clamping cap. The cotton swabs are replaceably connected to the end of the cleaning rod body through the clamping cap.

[0008] Furthermore, a cleaning guide rod is provided at the front of the rotating cleaning rod assembly, with a transverse cavity in the center of the cleaning guide rod and a cotton swab replacement port on the outer circumference of the front section of the cleaning guide rod.

[0009] Furthermore, the self-replenishing contact cleaning device also includes a guide locking assembly, which includes a bearing base, a locking driver, a guide push block, a locking limit roller, side limiters, and a longitudinal sliding block. The rear section of the top surface of the bearing base is connected to the locking driver, and the front section of the top surface of the bearing base is provided with a longitudinal sliding block. The bottom surface of the rear part of the cleaning guide rod is connected to the longitudinal sliding block. The locking limit roller is located on the top or side of the side limiter. The two side limiters are positioned opposite each other on the top or side of the rear part of the cleaning guide rod. The locking driver is connected to the front guide push block in a lateral driving manner. The guide push block is located between the two locking limit rollers corresponding to the two side limiters. The longitudinal position of the cleaning guide rod is limited and locked by the forward movement of the guide push block.

[0010] Furthermore, the self-replenishing contact cleaning device also includes a multi-degree-of-freedom flexible compensation unit for compensating for displacement after the cleaning guide rod is inserted into the deep cavity of the product. The rear end of the multi-degree-of-freedom flexible compensation unit is connected to the front end of the contact cleaning mounting bracket, and the rear end of the bearing base of the guide locking assembly is connected to the front end of the multi-degree-of-freedom flexible compensation unit through a guide adapter plate.

[0011] The present invention also provides a cleaning and testing device, including a cleaning and testing station and a product positioning platform; the cleaning and testing station includes a self-focusing optical testing device, a non-contact cleaning device, a contact cleaning device, a testing area positioning device, and a testing lifting device; the contact cleaning device adopts the aforementioned self-replenishing contact cleaning device, and is used for deep cavity fiber end face insertion and removal positioning and contact cleaning; the product positioning platform is located in front of the cleaning and testing station and is used for loading and unloading products to be tested and for product positioning.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present application uses a self-rotating long rod to drive a cleaning cotton swab to perform contact cleaning of the end face inside the deep cavity of the product, and achieves precise end face cleaning through guide locking. The cleaning fluid replenishment design allows the cotton swab to be replenished with alcohol. The solution effectively meets the cleaning needs of the end face inside the deep cavity of the product, and is convenient for promotion and application in fields such as optical communication, 3C, and semiconductor where deep cavity scenarios are present. Attached Figure Description

[0013] Figure 1 A schematic diagram of an optical module with a deep cavity; Figure 2 A schematic diagram of an example of a self-replenishing contact cleaning device; Figure 3 A schematic diagram of another example of a self-replenishing contact cleaning device; Figure 4 for Figure 3 Partial structural diagram; Figure 5 for Figure 3 A schematic diagram of the working process of the example device; Figure 6 A schematic diagram of a multi-degree-of-freedom flexible compensation unit; Figure 7 This is a schematic diagram of the cleaning and testing equipment; Figure 8 This is a schematic diagram of a cleaning and testing station; Figure 9 This is a flowchart of the cleaning detection method. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] A self-replenishing fluid contact cleaning device for surface cleaning of deep cavity fiber end faces, see [link to relevant documentation]. Figures 2-6 The self-replenishing contact cleaning device includes a contact cleaning mounting bracket 310, a rotating cleaning rod assembly 320, a contact cleaning lateral movement drive unit 330, a swing assembly 380, and an alcohol tank 390. The rotating cleaning rod assembly 320 is mounted to the contact cleaning mounting bracket 310. The contact cleaning lateral movement drive unit 330 drives the rotating cleaning rod assembly 320 to move laterally back and forth to achieve insertion and removal in the deep cavity of the product. The cleaning head of the rotating cleaning rod assembly 320 rotates controllably to clean the fiber end face in the deep cavity of the product. The swing assembly 380 is used to drive the end of the rotating cleaning rod assembly 320 to swing and immerse itself in the alcohol tank 390 to wet or horizontally face the product to be cleaned.

[0016] The rotating cleaning rod assembly 320 includes a cleaning rod body 321, a clamping cap 322, a replaceable cotton swab 323, and a rod body rotation driver 324. One end of the cleaning rod body 321 is connected to the rod body rotation driver 324, and the other end of the cleaning rod body 321 is connected to the clamping cap 322. The cotton swab 323 is replaceably connected to the end of the cleaning rod body 321 through the clamping cap 322.

[0017] A cleaning guide rod 340 is also provided at the front of the rotating cleaning rod assembly 320. A transverse cavity is opened in the center of the cleaning guide rod 340, and a cotton swab replacement port is opened on the outer peripheral surface of the front section of the cleaning guide rod 340.

[0018] The cross-section of the transverse cavity extending through the front and rear of the cleaning guide rod 340 is oval, elliptical, flattened prismatic, or rectangular, thus providing longitudinal space for cotton swab replacement. The illustration shows an oval shape.

[0019] The self-replenishing contact cleaning device also includes a guide locking assembly 350, which includes a bearing base 351, a locking driver 352, a guide push block 353, a locking limit roller 354, a side limit member 355, and a longitudinal sliding block 356. The rear section of the top surface of the bearing base 351 is connected to the locking driver 352, and the front section of the top surface of the bearing base 351 is provided with the longitudinal sliding block 356. The rear bottom surface of the cleaning guide rod 340 is connected to the longitudinal sliding block 356. The locking limit roller 354 is provided on the top or side of the side limit member 355. The two side limit members 355 are respectively provided on the top or side of the rear of the cleaning guide rod 340. The locking driver 352 is connected to the front guide push block 353 in a lateral driving manner. The guide push block 353 is between the two locking limit rollers 354 corresponding to the two side limit members 355. The longitudinal position of the cleaning guide rod 340 is limited and locked by the forward movement of the guide push block 353.

[0020] The bearing base 351 has a through hole at the front and back, and at least two bearings are installed in the hole to support the rotating cleaning rod assembly 320.

[0021] The guide push block 353 is a triangular block that is wider at the back and narrower at the front. After being driven forward, the guide push block 353 abuts against the locking limit roller 354, which drives the cleaning guide rod 340 to move longitudinally along the longitudinal slider 356 and locks its longitudinal position.

[0022] The self-replenishing contact cleaning device also includes a multi-degree-of-freedom flexible compensation unit 370 for compensating for displacement after the cleaning guide rod 340 is inserted into the deep cavity of the product. The rear end of the multi-degree-of-freedom flexible compensation unit 370 is connected to the front end of the contact cleaning mounting bracket 310. The rear end of the bearing base 351 of the guide locking assembly 350 is connected to the front end of the multi-degree-of-freedom flexible compensation unit 370 through a guide adapter plate 360.

[0023] The multi-degree-of-freedom flexible compensation unit 370 adopts a six-degree-of-freedom flexible compensation unit, which facilitates compensation for misalignment, contact, and other abnormal movements after the cleaning guide rod 340 is inserted into the deep cavity of the product. See also Figure 6The multi-degree-of-freedom flexible compensation unit 370 includes a first connecting plate 371, a second connecting plate 372, a compensation guide 373, a compensation spring 374, and a pneumatic top pin 375. The compensation spring 374 is disposed between the two connecting plates, and the distance between the two connecting plates can be changed by the extension and retraction of the pneumatic top pin 375. The compensation guide 373 is used to connect the first connecting plate 371 and the second connecting plate 372. It is locked to the second connecting plate 372 and cannot have relative displacement with the second connecting plate 372. It only limits the first connecting plate 371 and can generate relative rotational and translational displacement with the first connecting plate 371.

[0024] The first connecting plate 371 and the second connecting plate 372 of the multi-degree-of-freedom flexible compensation unit 370 have central openings to facilitate the passage of the rotating cleaning rod assembly 320.

[0025] The swing assembly 380 includes a swing adapter plate 381, a swing rotary driver 382, ​​a swing transverse transition base 383, and a swing limiting unit. The swing adapter plate 381 is connected to the bottom of the contact cleaning mounting bracket 310. The rotation output end of the swing rotary driver 382 is connected to the swing adapter plate 381. The swing transverse transition base 383 is disposed between the fixed part of the swing rotary driver 382 and the transverse drive part of the contact cleaning transverse drive unit 330.

[0026] The swing limiting unit includes a rotating limiting plate 384 and two sets of swing limiting rods 385. One set of swing limiting rods 385 is used for tilting liquid limiting, and the other set is used for horizontal limiting.

[0027] The alcohol tank 390 includes a tank body, a level sensor, and a replenishment pipe assembly, which is connected to an external alcohol tank.

[0028] Of course, the swing component 380 can be omitted. Instead, the alcohol in the alcohol tank 390 or the external alcohol container can be directly and controllably connected to the inner cavity of the cleaning rod 321 of the rotating cleaning rod assembly 320. The cotton swab 323 is also hollow, which can guide the alcohol from the cleaning rod 321 to the head of the cotton swab 323, so as to achieve online replenishment of cleaning agent.

[0029] Furthermore, the self-replenishing contact cleaning device also includes a pressure sensor to ensure the clamping force between the cleaning swab and the end face to be cleaned.

[0030] Workflow: a. Liquid replenishment: The cleaning rod assembly 320 is driven to rotate to the alcohol tank 390 by the swing assembly 380 to achieve liquid replenishment of the cotton swab. The alcohol tank 390 itself is equipped with liquid level monitoring. When the liquid level is lower than the threshold, the external alcohol tank automatically replenishes alcohol to the alcohol tank 390.

[0031] b. In non-cleaning stations, the cleaning rod assembly 320 is driven to rotate to a horizontal state by the swing assembly 380, and the contact cleaning transverse drive unit 330 drives the rotating cleaning rod assembly 320 away from the product to be cleaned.

[0032] At the c-cleaning station, the contact cleaning transverse drive unit 330 drives the rotating cleaning rod assembly 320 to insert into the deep cavity of the product for contact cleaning of the surface to be tested.

[0033] In addition, see Figure 7 and Figure 8 The present invention also provides a cleaning and testing device for the end face of a deep cavity fiber optic cable. The cleaning and testing device includes a cleaning and testing station 1000 and a product positioning platform 2000. The cleaning and testing station 1000 includes a self-focusing optical testing device 100, a non-contact cleaning device 200, a contact cleaning device 300, a testing area positioning device 400, and a testing lifting device 500. The self-focusing optical testing device 100 is used for deep cavity insertion and removal positioning and optical testing of the end face of the deep cavity fiber optic cable. The non-contact cleaning device 200 is used for deep cavity insertion and removal positioning and non-contact fluid cleaning of the end face of the deep cavity fiber optic cable. The contact cleaning device 300 adopts the aforementioned self-replenishing contact cleaning device and is used for deep cavity insertion and removal positioning and contact cleaning of the end face of the deep cavity fiber optic cable. The product positioning platform 2000 is located in front of the cleaning and testing station 1000 and is used for loading and unloading the product to be tested and for product positioning.

[0034] The cleaning and testing station 1000 also includes an inner frame 600 and an outer frame 700. The inner frame 600 is installed inside the outer frame 700 by a testing lifting device 500. The self-focusing optical testing device 100, the non-contact cleaning device 200, the contact cleaning device 300, and the testing area positioning device 400 are arranged inside the inner frame 600. The testing lifting device 500 drives the self-focusing optical testing device 100, the non-contact cleaning device 200, and the contact cleaning device 300 to lift and align with the testing end face area of ​​the product to be tested based on the image obtained by the testing area positioning device 400.

[0035] Between the cleaning and testing station 1000 and the product positioning platform 2000, there is also a product positioning vision module 3000. The product positioning vision module 3000 includes a vertical calibration and alignment camera unit and a horizontal calibration and alignment camera unit set on the product positioning frame, which are used to position the product on the tray on the product positioning platform 2000 below.

[0036] A barcode scanning module 4000 is also installed on the side of the product positioning platform 2000 for scanning the products on the pallet.

[0037] See Figure 9 The cleaning and testing method based on the aforementioned cleaning and testing equipment includes the following steps.

[0038] S1. Loading: The product pallet is transported to the product positioning platform 2000 and the pallet is positioned.

[0039] S2. Product positioning: Visual positioning of the product to be tested on the tray.

[0040] S3. Fiber optic end face positioning: The detection area positioning device 400 performs optical acquisition on the product at the cleaning or detection station to determine the visual positioning of the fiber optic end face to be tested inside the deep cavity of the product.

[0041] S4. Detection: The self-focusing optical detection device 100 performs optical image detection on the positioned end face of the optical fiber to be tested.

[0042] S5. Result Judgment: Based on the test results of S4, if the test result is OK, the test of the product is completed and an OK test result is output; if the test result is NG, non-contact cleaning is performed first, then S4 is entered. If the test result after non-contact cleaning is OK, the test of the product is completed and an OK test result is output; if the test result after non-contact cleaning is NG, contact cleaning is performed, non-contact cleaning is entered again, and then S4 is entered again. If the test result is OK, the test of the product is completed and an OK test result is output; if the test result is NG, the test of the product is also completed and an NG test result is output.

[0043] The method employs a three-time consecutive NG (Not From Good) judgment rule, which improves the detection yield and ensures the accuracy of the equipment.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; 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; and these modifications or substitutions do 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.

Claims

1. A self-replenishing fluid contact cleaning device for surface cleaning of the end face of a deep cavity optical fiber, characterized in that: The self-replenishing contact cleaning device includes a contact cleaning mounting bracket (310), a rotating cleaning rod assembly (320), a contact cleaning lateral movement drive unit (330), a swing assembly (380), and an alcohol tank (390). The rotating cleaning rod assembly (320) is mounted on the contact cleaning mounting bracket (310). The contact cleaning lateral movement drive unit (330) drives the rotating cleaning rod assembly (320) to move laterally and reciprocally to achieve insertion and removal in the deep cavity of the product. The cleaning head of the rotating cleaning rod assembly (320) can rotate in a controllable manner to clean the fiber end face in the deep cavity of the product. The swing assembly (380) is used to drive the end of the rotating cleaning rod assembly (320) to swing and immerse itself in the alcohol tank (390) to get liquid or to be horizontally facing the product to be cleaned.

2. The self-replenishing contact cleaning device according to claim 1, characterized in that: The rotating cleaning rod assembly (320) includes a cleaning rod body (321), a clamping cap (322), a replaceable cotton swab (323), and a rod body rotation driver (324). One end of the cleaning rod body (321) is connected to the rod body rotation driver (324), and the other end of the cleaning rod body (321) is connected to the clamping cap (322). The cotton swab (323) is replaceably connected to the end of the cleaning rod body (321) through the clamping cap (322).

3. The self-replenishing contact cleaning device according to claim 1, characterized in that: A cleaning guide rod (340) is also provided at the front of the rotating cleaning rod assembly (320). A transverse cavity is opened in the center of the cleaning guide rod (340), and a cotton swab replacement port is opened on the outer peripheral surface of the front section of the cleaning guide rod (340).

4. The self-replenishing contact cleaning device according to claim 3, characterized in that: The self-replenishing contact cleaning device also includes a guide locking assembly (350), which includes a bearing base (351), a locking actuator (352), a guide push block (353), a locking limit roller (354), a side limiter (355), and a longitudinal sliding block (356). The rear section of the top surface of the bearing base (351) is connected to the locking actuator (352), and the front section of the top surface of the bearing base (351) is provided with the longitudinal sliding block (356). The rear bottom surface of the cleaning guide rod (340) is connected to the longitudinal sliding block. 356); Locking limit roller (354) is set on the top or side of the side limit member (355). The two side limit members (355) are set opposite to each other on the top or side of the rear of the cleaning guide rod (340). The fixed drive (352) is connected to the front guide push block (353) in a lateral drive. The guide push block (353) is between the two locking limit rollers (354) corresponding to the two side limit members (355). The longitudinal position of the cleaning guide rod (340) is limited and locked by the forward movement of the guide push block (353).

5. The self-replenishing contact cleaning device according to claim 4, characterized in that: The bearing base (351) has a through hole at the front and back, and at least two bearings are installed in the hole for supporting the rotating cleaning rod assembly (320).

6. The self-replenishing contact cleaning device according to claim 4, characterized in that: The guide push block (353) is a triangular block that is wider at the back and narrower at the front. After the guide push block (353) is driven to move forward, it abuts against the locking limit roller (354), which drives the cleaning guide rod (340) to move longitudinally along the longitudinal slider (356) and lock the longitudinal position.

7. The self-replenishing contact cleaning device according to claim 4, characterized in that: The self-replenishing contact cleaning device also includes a multi-degree-of-freedom flexible compensation unit (370) for compensation of displacement after the cleaning guide rod (340) is inserted into the deep cavity of the product. The rear end of the multi-degree-of-freedom flexible compensation unit (370) is connected to the front end of the contact cleaning mounting bracket (310). The rear end of the bearing base (351) of the guide locking assembly (350) is connected to the front end of the multi-degree-of-freedom flexible compensation unit (370) through a guide adapter plate (360).

8. The self-replenishing contact cleaning device according to claim 1, characterized in that: The swing assembly (380) includes a swing adapter plate (381), a swing rotary driver (382), a swing transverse adapter (383), and a swing limiting unit. The swing adapter plate (381) is connected to the bottom of the contact cleaning mounting bracket (310). The rotation output end of the swing rotary driver (382) is connected to the swing adapter plate (381). The swing transverse adapter (383) is disposed between the fixed part of the swing rotary driver (382) and the transverse drive part of the contact cleaning transverse drive unit (330).

9. The self-replenishing contact cleaning device according to claim 1, characterized in that: The alcohol tank (390) includes a tank body, a level sensor and a replenishment pipe assembly, which is connected to an external alcohol tank.

10. A cleaning and testing device, characterized in that: The cleaning and testing equipment includes a cleaning and testing station (1000) and a product positioning platform (2000); the cleaning and testing station (1000) includes a self-focusing optical testing device (100), a non-contact cleaning device (200), a contact cleaning device (300), a testing area positioning device (400), and a testing lifting device (500); the contact cleaning device (300) adopts the self-replenishing liquid contact cleaning device as described in any one of claims 1-9, and is used for deep cavity fiber end face insertion and removal positioning and contact cleaning; the product positioning platform (2000) is located in front of the cleaning and testing station (1000) and is used for loading and unloading the product to be tested and for product positioning.

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