Fingerprint module assembly device

Abstract

The application belongs to the field of automation equipment and provides a fingerprint module buckling assembly device, which comprises: lifting positioning assemblies and corresponding smoothing assemblies arranged at intervals on a conveying line, which are used for lifting and clamping a mobile phone shell and smoothing FPC in the shell; a slope lifting assembly driven by a Y-shaft screw and a first suction head and a constraint rod are arranged above a turning-over station, the first suction head sucks the smoothed FPC at a specific angle and completes turning-over in cooperation with the constraint rod; a mounting station is provided with a side support plate and a smoothing assembly to receive and secondarily smooth the FPC, a mounting positioning assembly is driven by an XY-shaft execution module, and a top camera and a side vision are used to position a buckling point of the mobile phone shell and a position before and after the FPC is grabbed, a second suction head is used to complete precise buckling assembly of the end of the FPC, and full-automatic and high-precision assembly of the fingerprint module FPC flat cable is realized; the application can solve the problems of the prior art, such as difficult precise positioning of the FPC flat cable, long calculation period of full-vision positioning and easy errors, and difficult full-automatic buckling assembly.

Description

Technical Field

[0001] This invention relates to the field of automated equipment, and more particularly to a fingerprint module fastening assembly device. Background Technology

[0002] Currently, in the assembly process of mobile phones and other electronic products, the FPC cable for the fingerprint module needs to be fastened to the motherboard inside the phone casing. Generally, the FPC cable has two fastening points, both of which need to be fastened to the motherboard. In some mobile phone motherboards, when installing the fingerprint module's FPC cable, some processes do not fasten both ends simultaneously. One end is installed first, followed by the installation of small boards, shielding covers, and other accessories, or after other tests, the other end is fastened. Because the FPC cable is flexible, after one end is fastened to the motherboard, the position of the other end is difficult to locate after the phone casing has been transported and moved. If a vision camera is used to directly locate the other end of the FPC cable, the calculation cycle is long, error-prone, and difficult to automate. For this situation, existing technologies generally only allow for manual or semi-automatic assembly methods, which are inefficient and costly. Summary of the Invention

[0003] In view of the above technical problems, the present invention provides a fingerprint module snap-fit ​​assembly device to solve the problems of the existing technology, such as the difficulty in accurately locating the other end of the FPC cable, the long and error-prone calculation cycle of full vision positioning, and the difficulty in achieving fully automatic snap-fit ​​assembly.

[0004] Other features and advantages of this disclosure will become apparent from the following detailed description, or may be learned in part from practice of this disclosure.

[0005] This invention discloses a fingerprint module fastening assembly device, comprising:

[0006] A conveyor line is provided with multiple lifting and positioning components, smoothing components and side positioning components corresponding to the lifting and positioning components. The multiple lifting and positioning components are arranged at intervals along the conveyor line. The lifting and positioning components located at different positions correspond to the flipping station and the mounting station, respectively. The lifting and positioning components are used to lift and clamp the mobile phone housing on the conveyor line. The smoothing component is located on one side of the conveyor line and includes a smoothing rod that extends out driven by a first cylinder to smooth the FPC in the mobile phone housing. The side positioning component is used to press against one side of the mobile phone housing.

[0007] A flipping mechanism is provided above the flipping station. The flipping mechanism includes a Y-axis lead screw assembly, a tilting assembly, and a constraint rod. The tilting assembly is driven by the Y-axis lead screw assembly to move horizontally above the conveyor line. It includes a tilting cylinder and a first suction head driven to rise and fall by the tilting cylinder. The axis of the first suction head forms an angle of 120-160° with the driving stroke of the tilting cylinder. The first suction head is used to pick up the FPC after it has been smoothed by the smoothing assembly. The constraint rod is located above the conveyor line and is used to prevent the FPC after it has been picked up by the first suction head from falling.

[0008] The mounting mechanism, located at the mounting station, includes an XY-axis execution module, a mounting positioning component, a side vision component, and a side support component. The side support component includes a side support plate movable to one end of the constraint rod to receive falling FPCs. A smoothing component located at the mounting station smooths the FPCs falling onto the side support plate. The mounting positioning component is driven by the XY-axis execution module to translate along the conveyor line. The mounting positioning component includes a second suction device driven to rise and fall by a first lead screw motor. The device includes a head, freely opening and closing grippers arranged around both sides of the second suction head, and an upper camera located on one side of the second suction head. The upper camera is used to take pictures and locate the fastening point of the mobile phone casing and to take pictures and locate the FPC located on the side support plate. The side vision component is used to take pictures and locate the FPC being gripped by the mounting and positioning component. The mounting and positioning component fastens and assembles the FPC at the fastening point of the mobile phone casing based on the positioning information of the FPC before it is gripped, the positioning information of the FPC after it is gripped, and the positioning information of the fastening point.

[0009] Furthermore, the lifting and positioning assembly includes a lifting plate, a bottom lifting cylinder for driving the lifting plate, a stop block located on one side of the bottom lifting cylinder, and a clamping block located at one end of the lifting plate. The stop block is driven to rise and fall by the stop cylinder, and the clamping block is driven by the clamping cylinder to press against the mobile phone casing located on the lifting plate.

[0010] Furthermore, a barcode scanner is installed above the flipping station, which is used to scan and register the mobile phone casing in the flipping station.

[0011] Furthermore, the side support assembly also includes a second lead screw motor. The side support plate is bent, and one end of the side support plate is connected to the second lead screw motor through a lead screw nut. The second lead screw motor drives the side support plate to move to one end of the constraint rod.

[0012] Furthermore, in the mounting and positioning assembly, the second suction head is connected to a hollow rotating shaft, which passes through a bearing assembly and a transmission gear. The bearing assembly is connected to a transmission motor via a connecting plate, and the transmission motor is connected to the transmission gear via a belt, which drives the rotating shaft to rotate in the bearing assembly.

[0013] Furthermore, the bearing assembly is fixed on the first slide plate, the first lead screw motor is installed on the top of the first slide plate, the drive end of the first lead screw motor is connected to the first connecting seat, the bottom end of the first connecting seat is provided with a pressure sensor, the top end of the rotating shaft is connected to the second connecting seat, a connecting post is inserted through the second connecting seat, a spring is sleeved on the connecting post, the spring is limited between the top of the connecting post and the top of the second connecting seat, a linkage is installed on one side of the first connecting seat, a limit groove is provided at the bottom of the linkage, one side of the second connecting seat protrudes outward and passes through the limit groove, and the first connecting seat and the second connecting seat are slidably connected on the first slide plate.

[0014] Furthermore, the first slide plate is slidably connected to one side of the second slide plate, and a lifting screw motor is installed on the other side of the second slide plate, the lifting screw motor being used to drive the first slide plate to rise and fall.

[0015] Furthermore, the conveyor line is also equipped with a re-inspection station, which corresponds to one of the lifting and positioning components. The re-inspection station is equipped with a re-inspection mechanism, which includes a laser height measuring device, a rotary motor that drives the laser height measuring device to rotate, a clamping hand for clamping the mobile phone casing, a clamping cylinder that drives the clamping hand to open and close, a second cylinder that drives the clamping cylinder to rise and fall, and a Y-axis motion module that drives the rotary motor and the second cylinder to move along the Y-axis.

[0016] Furthermore, a defective product conveyor belt is provided on one side of the re-inspection station.

[0017] The technical solution disclosed herein has the following beneficial effects:

[0018] By incorporating lifting and positioning components, flipping mechanisms, side support components, smoothing components, and multi-vision cooperating mounting and positioning components on the conveyor line, the phone casing achieves stable lifting and clamping at each workstation, automatic flipping, receiving, and smoothing of the FPC cable. Combined with multiple positioning corrections of the FPC before and after gripping and at the snap-in point by the camera and side vision components, the second suction head moves precisely in the XY and lifting directions, thereby accurately snapping the other end of the FPC cable to the snap-in point on the phone casing motherboard. This effectively solves the problems in existing technologies where the FPC cable's high flexibility makes it difficult to position its end, and the visual algorithm requires a large amount of computation and is prone to errors. It achieves fully automated, high-precision snap-in assembly of the fingerprint module FPC cable, significantly improving assembly efficiency and reducing manual intervention and the risk of misassembly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the fingerprint module fastening assembly device in the embodiments of this specification;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure after removing part of the XY axis execution module;

[0021] Figure 3 This is a top view of a portion of the structure of the fingerprint module fastening assembly device in this embodiment;

[0022] Figure 4 This is a schematic diagram of the transmission line structure in the embodiments of this specification;

[0023] Figure 5 This is a schematic diagram of the lifting and positioning assembly in the embodiments of this specification;

[0024] Figure 6 This is a schematic diagram of the smoothing component in the embodiments of this specification;

[0025] Figure 7 This is a schematic diagram of the flipping mechanism in the embodiments of this specification;

[0026] Figure 8 This is a structural schematic diagram of the side vision component and the side support component in the embodiments of this specification;

[0027] Figure 9 This is a schematic diagram of the conveyor belt, side vision component, and side support component in the embodiments of this specification.

[0028] Figure 10 for Figure 9 Enlarged structural diagram of component A;

[0029] Figure 11 This is a schematic diagram of the mounting mechanism in the embodiments of this specification;

[0030] Figure 12 This is a partial structural schematic diagram of the mounting mechanism in the embodiments of this specification;

[0031] Figure 13 This is a partial structural schematic diagram of the mounting mechanism in the embodiments of this specification;

[0032] Figure 14 This is a partial structural schematic diagram of the mounting mechanism in the embodiments of this specification;

[0033] Figure 15 This is a partial structural schematic diagram of the re-inspection mechanism in the embodiments of this specification;

[0034] Figure 16 This is a schematic diagram of the FPC cable structure after flipping over in the embodiments of this specification;

[0035] Figure 17 This is a schematic diagram of the structure of the mobile phone casing and FPC cable in the embodiments of this specification.

[0036] The following are explanations of the reference numerals in the attached figures:

[0037] 1. Conveyor line; 11. Lifting and positioning assembly; 111. Lifting plate; 112. Bottom lifting cylinder; 113. Stop block; 114. Stop cylinder; 115. Clamping block; 116. Clamping cylinder; 12. Smoothing assembly; 121. First cylinder; 122. Smoothing rod; 13. Side positioning assembly; 14. Barcode scanner; 2. Flipping mechanism; 21. Y-axis lead screw assembly; 22. Inclined lifting assembly; 221. Inclined lifting cylinder; 222. First suction head; 23. Constraint rod; 3. Mounting mechanism; 31. XY-axis execution module; 32. Mounting and positioning assembly; 321. First lead screw motor; 322. Second suction head; 323. Gripper; 324. Upper camera; 325. Rotary shaft; 326. Bearing assembly; 327. Transmission gear; 328. Connecting plate; 329. Drive motor; 3210. First connecting seat; 3211. Pressure sensor; 3212. Spring; 3213. Second connecting seat; 3214. Linkage component; 32141. Limiting groove; 3215. First sliding plate; 3216. Second sliding plate; 3217. Lifting screw motor; 33. Side vision component; 331. Virtual line of sight; 34. Side support component; 341. Side support plate; 342. Second screw motor; 4. Re-inspection mechanism; 41. Laser height measuring device; 42. Rotary motor; 43. Clamping hand; 44. Clamping cylinder; 45. Second cylinder; 46. Y-axis motion module; 47. Defective product conveyor belt; 5. FPC; 6. Mobile phone casing; 101. Flipping station; 102. Mounting station; 103. Re-inspection station. Detailed Implementation

[0038] The exemplary implementation will now be described more fully with reference to the accompanying drawings.

[0039] The accompanying drawings are merely illustrative of this disclosure. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. It is understood that the scale of the various components in the drawings does not constitute a limitation of this disclosure.

[0040] like Figures 1 to 3 As shown in the figure, this specification provides a fingerprint module fastening assembly device, including a flipping mechanism 2, a mounting mechanism 3, and a re-inspection mechanism 4 arranged along the conveyor line 1. The state of the FPC cable 5 after flipping is as follows. Figure 16 As shown, the phone case 6 Figure 17 As shown, where:

[0041] like Figures 4 to 6 As shown, the conveyor line 1 is provided with multiple lifting and positioning components 11, smoothing components 12 and side positioning components 13 corresponding to the lifting and positioning components 11. The multiple lifting and positioning components 11 are arranged at intervals along the conveyor line 1. The lifting and positioning components 11 located at different positions correspond to the flipping station 101 and the mounting station 102 respectively. The lifting and positioning components 11 are used to lift and clamp the mobile phone housing 6 on the conveyor line 1. The smoothing component 12 is located on one side of the conveyor line 1. It includes a smoothing rod 122 that is driven by the first cylinder 121 to extend and smooth the FPC cable 5 in the mobile phone housing 6. The side positioning component 13 is used to press against one side of the mobile phone housing 6.

[0042] Specifically, such as Figure 5 As shown, the lifting and positioning assembly 11 includes a lifting plate 111, a bottom lifting cylinder 112 that drives the lifting plate 111, a stop block 113 located on one side of the bottom lifting cylinder 112, and a clamping block 115 located at one end of the lifting plate 111. The stop block 113 is driven to rise and fall by the stop cylinder 114, and the clamping block 115 is driven by the clamping cylinder 116 to press against the mobile phone casing 6 located on the lifting plate 111.

[0043] like Figure 7 As shown, the flipping mechanism 2 is located above the flipping station 101. The flipping mechanism 2 includes a Y-axis lead screw assembly, a tilting assembly 22, and a constraint rod 23. The tilting assembly 22 is driven by the Y-axis lead screw assembly to move horizontally above the conveyor line 1. It includes a tilting cylinder 221 and a first suction head 222 driven to rise and fall by the tilting cylinder 221. The axis of the first suction head 222 forms an angle of 120-160° with the driving stroke of the tilting cylinder 221. The first suction head 222 is used to pick up the FPC cable 5 after it has been flattened by the flattening assembly 12. The constraint rod 23 is located above the conveyor line 1 and is used to prevent the FPC cable 5 after it has been picked up by the first suction head 222 from falling.

[0044] Above the flipping station 101, there is also a barcode scanner 14, which is used to scan and register the mobile phone casings 6 in the flipping station 101.

[0045] like Figures 8 to 14 As shown, the mounting mechanism 3 is located at mounting station 102. It includes an XY-axis execution module 31, a mounting positioning component 32, a side vision component 33, and a side support component 34. The side support component 34 includes a side support plate 341, which can be moved to one end of the constraint rod 23 to receive the falling FPC cable 5. A smoothing component 12 located at mounting station 102 is used to smooth the FPC cable 5 that has fallen onto the side support plate 341. The mounting positioning component 32 is driven by the XY-axis execution module 31 to translate on the conveyor line 1. The mounting positioning component 32 includes a second suction device that is driven to rise and fall by a first lead screw motor 321. The device includes a head 322, freely opening and closing grippers 323 arranged around both sides of the second suction head 322, and an upper camera 324 located on one side of the second suction head 322. The upper camera 324 is used to take pictures and locate the snap-fit ​​point of the mobile phone housing 6 and to take pictures and locate the FPC cable 5 located on the side support plate 341. The side vision component 33 is used to take pictures and locate the FPC cable 5 gripped by the mounting positioning component 32. The mounting positioning component 32 snaps and assembles the FPC cable 5 at the snap-fit ​​point of the mobile phone housing 6 according to the positioning information of the FPC cable 5 before it is gripped, the positioning information of the FPC cable 5 after it is gripped, and the positioning information of the snap-fit ​​point.

[0046] The side support assembly 34 also includes a second lead screw motor 342. The side support plate 341 is bent. One end of the side support plate 341 is connected to the second lead screw motor 342 through a lead screw nut seat. The second lead screw motor 342 drives the side support plate 341 to move to one end of the constraint rod 23.

[0047] In the mounting and positioning assembly 32, the second suction head 322 is connected to a hollow rotating shaft 325. The rotating shaft 325 passes through a bearing assembly 326 and a transmission gear 327. The bearing assembly 326 is connected to a transmission motor 329 through a connecting plate 328. The transmission motor 329 is connected to the transmission gear 327 through a belt, which drives the rotating shaft 325 to rotate in the bearing assembly 326.

[0048] The bearing assembly 326 is fixed on the first slide plate 3215. The top of the first slide plate 3215 is provided with a first lead screw motor 321. The drive end of the first lead screw motor 321 is connected to the first connecting seat 3210. The bottom end of the first connecting seat 3210 is provided with a pressure sensor 3211. The top end of the rotating shaft 325 is connected to the second connecting seat 3213. A connecting post is inserted through the second connecting seat 3213. A spring 3212 is sleeved on the connecting post. The spring 3212 is limited between the top of the connecting post and the top of the second connecting seat 3213. A linkage 3214 is installed on one side of the first connecting seat 3210. A limiting groove 32141 is provided at the bottom of the linkage 3214. One side of the second connecting seat 3213 protrudes outward and is inserted into the limiting groove 32141. The first connecting seat 3210 and the second connecting seat 3213 are slidably connected to the first slide plate 3215.

[0049] The first slide plate 3215 is slidably connected to one side of the second slide plate 3216. A lifting screw motor is installed on the other side of the second slide plate 3216. The lifting screw motor is used to drive the first slide plate 3215 to rise and fall.

[0050] Among them, Figure 10 In the middle, the virtual line of sight 331 of the side vision component 33 points to the intersection of the side support plate 341 and the smoothing rod 122, and takes a picture to locate the FPC cable 5 at the intersection.

[0051] like Figure 15 As shown, a re-inspection station 103 is also provided on the conveyor line 1. The re-inspection station 103 corresponds to one of the lifting and positioning components 11. A re-inspection mechanism 4 is provided on the re-inspection station 103. The re-inspection mechanism 4 includes a laser height measuring device 41, a rotary motor 42 that drives the laser height measuring device 41 to rotate, a clamping hand 43 for clamping the housing of the hand 43, a clamping cylinder 44 that drives the clamping hand 43 to open and close, a second cylinder 45 that drives the clamping cylinder 44 to rise and fall, and a Y-axis motion module 46 that drives the rotary motor 42 and the second cylinder 45 to move along the Y-axis.

[0052] A defective product conveyor belt 47 is installed on one side of the re-inspection station 103.

[0053] Workflow:

[0054] The mobile phone casing 6 is fed into the conveyor line 1 by the front-end process or the feeding mechanism, and then goes through each station to complete the automated operation process of FPC cable 5 flipping, FPC cable 5 end receiving and smoothing, BTB fastening assembly, laser height measurement and re-inspection, OK outflow / NG diversion.

[0055] I. FPC Cable Flipping and Scanning Process

[0056] 1. Mobile phone casing 6-feed and lifting positioning

[0057] The phone casing 6, which is to be assembled with the fingerprint module FPC cable 5, is conveyed to the flipping station 101 by the conveyor line 1. The corresponding lifting and positioning component 11 is activated, and the bottom lifting cylinder 112 rises to lift the phone casing 6 from the conveyor line 1.

[0058] Stop cylinder 114 drives stop block 113 to rise, limiting the position of mobile phone housing 6 in the conveying direction; clamping cylinder 116 drives clamping block 115 to press against mobile phone housing 6, realizing the clamping of mobile phone housing 6 and completing the reference positioning of flipping station 101.

[0059] The side positioning component 13 presses against one side of the phone casing 6.

[0060] 2. Scan the QR code to register

[0061] The barcode scanner 14 above the flipping station 101 is activated to scan the QR code or barcode of the mobile phone casing 6 in the current station, and complete the scanning and registration of product information and station process information, providing a basis for subsequent traceability and process parameter retrieval.

[0062] 3. Smooth the FPC cable 5.

[0063] When the smoothing component 12 on one side of the flipping station 101 is activated, the first cylinder 121 drives the smoothing rod 122 to extend, smoothing the FPC cable 5 in the phone casing 6 that is already fastened to the motherboard. This ensures that the flexible FPC cable 5 is neatly and properly attached to the casing, reducing instability during subsequent suction and flipping processes. It's worth noting that because the FPC cable 5 is flexible and one end is already fixed to the motherboard, the middle of the FPC cable 5 may be slightly raised. The smoothing component 12's function is to flatten the FPC cable 5, making it adhere to the motherboard or phone casing 6, so that the first suction head 222 can directly pick up the unfastened end of the FPC cable 5.

[0064] 4. FPC cable 5 flip-over absorption and constraint

[0065] The Y-axis lead screw assembly in the flipping mechanism 2 is activated, driving the inclined lifting assembly 22 to move along the Y direction above the conveyor line 1 to the predetermined target FPC cable 5 position.

[0066] The inclined cylinder 221 drives the first suction head 222 to rise and fall. The axis of the first suction head 222 is set at an angle of 120~160° relative to the driving stroke of the inclined cylinder 221, so that the suction action has both vertical and inclined components. This is beneficial for lifting and flipping the flattened FPC cable 5 from the housing. The state of the flipped FPC cable 5 is as follows: Figure 16 As shown.

[0067] The first suction head 222 descends to above the end of the FPC cable 5, and uses vacuum adsorption to lift and raise the unfastened end of the FPC cable 5. After being lifted and moved horizontally with the inclined lifting component 22, it is flipped over and then released. At this time, the lifting and positioning component 11 releases the mobile phone housing 6, and the housing is moved forward by the conveyor line 1. After moving to the constraint rod 23 above the conveyor line 1, the constraint rod 23 limits the FPC cable 5, preventing the FPC cable 5 from swinging freely or falling back, and keeping it in a predictable spatial posture, in preparation for subsequent material dropping onto the side support plate 341.

[0068] After flipping, the corresponding camera can monitor the process to ensure that the FPC cable 5 has been flipped.

[0069] II. FPC cable 5-way bonding and BTB fastening process

[0070] 5. Lifting and positioning at mounting station 102

[0071] Lifting and positioning component 11 operates as follows: the bottom lifting cylinder 112 lifts the phone casing 6, and the stop block 113 cooperates with the clamping block 115 to achieve positioning and clamping of the phone casing 6.

[0072] 6. FPC cable 5 is cut to side support plate 341.

[0073] Side support assembly 34 action: The second lead screw motor 342 drives the lead screw nut seat, causing the bent side support plate 341 to move in the opposite direction along the transmission line 1, and come to one end below the constraint rod 23.

[0074] The end of the FPC cable 5 falls naturally under the guidance of the constraint rod 23 and gravity, or the FPC cable 5 does not fall, but the smoothing component 12 on the mounting station 102 pushes the FPC cable 5 onto the bent support surface of the side support plate 341, achieving stable support and pre-positioning of the other end of the FPC cable 5. At the same time, the smoothing component 12 smooths the FPC cable 5 on the side support plate 341 again, removing curls and twists, so that the free end (the steel sheet at the end) of the FPC cable 5 is in a relatively flat and recognizable position on the side support plate 341.

[0075] 7. Visual positioning of the fastening point and the end of the FPC cable 5.

[0076] Driven by the XY axis execution module 31, the mounting and positioning component 32 moves horizontally along the conveyor line 1 to the top of the mobile phone casing 6.

[0077] The camera 324 first takes a picture of the fastening point (BTB socket) on the motherboard of the phone casing 6, and calculates the spatial coordinates and posture information of the fastening point.

[0078] Subsequently, the mounting and positioning component 32 moves above the side support plate 341, and the upper camera 324 takes a picture of the end of the FPC cable 5 located on the side support plate 341 to obtain the actual position and attitude data of the free end of the FPC cable 5.

[0079] 8. FPC cable 5-point gripping and side visual correction

[0080] With the cooperation of the first lead screw motor 321 and the lifting lead screw motor, the second suction head 322 achieves precise lifting and rotation adjustment through the hollow rotating shaft 325 and the transmission motor 329; the gripper 323 can open and close freely, and cooperates with the second suction head 322 to clamp and assist in positioning the steel sheet of the FPC cable 5.

[0081] The second suction head 322 descends based on the positioning information of the FPC cable 5 provided by the upper camera 324, adsorbs / clamps the end of the FPC cable 5 and lifts it up; at this time, the side vision component 33 performs side view photography and positioning on the FPC cable 5 that has been grasped, and obtains the actual position and posture of the FPC cable 5 after it is picked up, as a data source for secondary correction.

[0082] Through the elastic and force feedback structure formed by the linkage 3214, spring 3212, and pressure sensor 3211, the mounting and positioning assembly 32 can adaptively compensate for height and contact pressure during gripping and handling. Specifically, when the first lead screw motor 321 drives the rotating shaft 325 to descend, the pressure sensor 3211 contacts the connecting post. Since the connecting post limits the spring 3212, it will drive the spring 3212 to press down, causing the second connecting seat 3213 and the rotating shaft 325 to press down, and the second suction head 322 to contact the FPC cable 5. When the second lead screw motor drives the upward movement, since the pressure sensor 3211 is in contact with the connecting post, it cannot directly drive the rotating shaft 325 to rise. At this time, the second connecting seat 3213 is driven to rise through the limiting groove 32141 in the linkage 3214.

[0083] 9. BTB snap-fit ​​mounting

[0084] The XY axis execution module 31, in conjunction with the lifting and rotation mechanism, moves the end of the gripped FPC cable 5 above the snap-fit ​​point. Based on the positioning information of the snap-fit ​​point (the coordinates obtained by the upper camera 324 taking pictures of the BTB seat), it performs comprehensive compensation and precise alignment of the end of the FPC cable 5 in the X / Y / Z and rotation directions.

[0085] Under the condition of meeting the alignment accuracy, the second suction head 322 presses downward under the monitoring of the pressure sensor 3211, and snaps the BTB terminal at the end of the FPC cable 5 to the snap-fit ​​point on the motherboard of the mobile phone casing 6, completing the automatic snap-fit ​​assembly of the other end of the FPC cable 5. The second suction head 322 is connected to the rotating shaft 325, and the rotating shaft 325 is connected to the vacuum device to provide suction for the second suction head.

[0086] After the fastening is completed, the gripper 323 is released, the vacuum is released, the mounting and positioning component 32 is lifted and returned to the safe position, and the mobile phone casing 6 is placed back onto the conveyor line 1 by the lifting and positioning component 11 and flows to the next station.

[0087] III. NG Re-inspection and Triage Process

[0088] 10. Lifting of inspection station 103

[0089] After the two ends of the FPC cable 5 are fastened together, the mobile phone casing 6 enters the re-inspection station 103 along the conveyor line 1. The corresponding lifting and positioning component 11 is activated again to lift the mobile phone casing 6 and perform lateral positioning.

[0090] 11. Laser height measurement re-inspection

[0091] The Y-axis motion module 46 drives the second cylinder 45 and the rotary motor 42 to move along the Y direction to the preset measurement path. The laser height measuring device 41, driven by the rotary motor 42, performs multi-point height scanning on key areas (such as the BTB fastening area and its surroundings) on the mobile phone casing 6 according to the set angle and trajectory.

[0092] Based on the height data collected by the laser height measuring device 41, the height difference, flatness, and deviation from the standard height of each measuring point are calculated to determine whether the FPC cable 5 is properly engaged, whether there is any warping, denting, or assembly abnormality.

[0093] 12. OK / NG splitting

[0094] When the height measurement result is within the allowable range of the process, the product is judged to be OK, the lifting component descends, and the mobile phone casing 6 continues to flow out with the conveyor line 1, entering the downstream process or the discharge section.

[0095] If the height measurement result exceeds the set threshold, the product is determined to be NG. The second cylinder 45 drives the clamping cylinder 44 and the clamping hand 43 to descend and remove the defective product. The defective product is automatically transferred out through the defective product conveyor belt 47 set on one side of the re-inspection station 103, realizing the online diversion and isolation of NG products and preventing defective products from flowing into the next process or being shipped. Beneficial effects

[0096] By setting up a lifting and positioning component 11, a flipping mechanism 2, a side support component 34, a smoothing component 12, and a multi-vision cooperating mounting and positioning component 32 on the conveyor line 1, the mobile phone casing 6 is stably lifted and clamped at each station, the FPC cable 5 is automatically flipped, received, and smoothed. Combined with the camera 324 and the side vision component 33's multiple positioning corrections of the FPC cable 5 before and after being gripped and at the fastening point, the second suction head 322 is driven to move precisely in the XY and lifting directions, thereby accurately fastening the other end of the FPC cable 5 to the fastening point on the motherboard of the mobile phone casing 6. This effectively solves the problems in existing technologies where the FPC cable 5 is highly flexible, its end position is difficult to locate, and the visual algorithm has a large computational load and is prone to errors. It achieves fully automatic, high-precision fastening assembly of the fingerprint module FPC cable 5, significantly improving assembly efficiency and reducing manual intervention and the risk of incorrect assembly.

[0097] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein.

Claims

1. A fingerprint module fastening assembly device, characterized in that, include: A conveyor line is provided with multiple lifting and positioning components, smoothing components and side positioning components corresponding to the lifting and positioning components. The multiple lifting and positioning components are arranged at intervals along the conveyor line. The lifting and positioning components located at different positions correspond to the flipping station and the mounting station, respectively. The lifting and positioning components are used to lift and clamp the mobile phone housing on the conveyor line. The smoothing component is located on one side of the conveyor line and includes a smoothing rod that extends out driven by a first cylinder to smooth the FPC in the mobile phone housing. The side positioning component is used to press against one side of the mobile phone housing. A flipping mechanism is provided above the flipping station. The flipping mechanism includes a Y-axis lead screw assembly, a tilting assembly, and a constraint rod. The tilting assembly is driven by the Y-axis lead screw assembly to move horizontally above the conveyor line. It includes a tilting cylinder and a first suction head driven to rise and fall by the tilting cylinder. The axis of the first suction head forms an angle of 120-160° with the driving stroke of the tilting cylinder. The first suction head is used to pick up the FPC after it has been smoothed by the smoothing assembly. The constraint rod is located above the conveyor line and is used to prevent the FPC after it has been picked up by the first suction head from falling. The mounting mechanism, located at the mounting station, includes an XY-axis execution module, a mounting positioning component, a side vision component, and a side support component. The side support component includes a side support plate movable to one end of the constraint rod to receive falling FPCs. A smoothing component located at the mounting station smooths the FPCs falling onto the side support plate. The mounting positioning component is driven by the XY-axis execution module to translate along the conveyor line. The mounting positioning component includes a second suction device driven to rise and fall by a first lead screw motor. The device includes a head, freely opening and closing grippers arranged around both sides of the second suction head, and an upper camera located on one side of the second suction head. The upper camera is used to take pictures and locate the fastening point of the mobile phone casing and to take pictures and locate the FPC located on the side support plate. The side vision component is used to take pictures and locate the FPC being gripped by the mounting and positioning component. The mounting and positioning component fastens and assembles the FPC at the fastening point of the mobile phone casing based on the positioning information of the FPC before it is gripped, the positioning information of the FPC after it is gripped, and the positioning information of the fastening point.

2. The fingerprint module fastening assembly device according to claim 1, characterized in that, The lifting and positioning assembly includes a lifting plate, a bottom lifting cylinder that drives the lifting plate, a stop block located on one side of the bottom lifting cylinder, and a clamping block located at one end of the lifting plate. The stop block is driven to move up and down by the stop cylinder, and the clamping block is driven by the clamping cylinder to press against the mobile phone casing located on the lifting plate.

3. The fingerprint module fastening assembly device according to claim 1, characterized in that, A barcode scanner is also installed above the flipping station, which is used to scan and register the mobile phone casings in the flipping station.

4. The fingerprint module fastening assembly device according to claim 1, characterized in that, The side support assembly also includes a second lead screw motor. The side support plate is bent in shape. One end of the side support plate is connected to the second lead screw motor through a lead screw nut. The second lead screw motor drives the side support plate to move to one end of the constraint rod.

5. The fingerprint module fastening assembly device according to claim 1, characterized in that, In the mounting and positioning assembly, the second suction head is connected to a hollow rotating shaft. The rotating shaft passes through a bearing assembly and a transmission gear. The bearing assembly is connected to a transmission motor via a connecting plate. The transmission motor is connected to the transmission gear via a belt, which drives the rotating shaft to rotate in the bearing assembly.

6. The fingerprint module fastening assembly device according to claim 5, characterized in that, The bearing assembly is fixed on the first slide plate. The first lead screw motor is installed on the top of the first slide plate. The drive end of the first lead screw motor is connected to the first connecting seat. A pressure sensor is installed at the bottom of the first connecting seat. The top of the rotating shaft is connected to the second connecting seat. A connecting post is inserted through the second connecting seat. A spring is sleeved on the connecting post. The spring is limited between the top of the connecting post and the top of the second connecting seat. A linkage is installed on one side of the first connecting seat. A limit groove is provided at the bottom of the linkage. One side of the second connecting seat protrudes outward and passes through the limit groove. The first connecting seat and the second connecting seat are slidably connected on the first slide plate.

7. The fingerprint module fastening assembly device according to claim 6, characterized in that, The first slide plate is slidably connected to one side of the second slide plate, and a lifting screw motor is installed on the other side of the second slide plate. The lifting screw motor is used to drive the first slide plate to lift and lower.

8. The fingerprint module fastening assembly device according to claim 1, characterized in that, The conveyor line is also equipped with a re-inspection station, which corresponds to one of the lifting and positioning components. The re-inspection station is equipped with a re-inspection mechanism, which includes a laser height measuring device, a rotary motor that drives the laser height measuring device to rotate, a clamping hand for clamping the mobile phone casing, a clamping cylinder that drives the clamping hand to open and close, a second cylinder that drives the clamping cylinder to rise and fall, and a Y-axis motion module that drives the rotary motor and the second cylinder to move along the Y-axis.

9. A fingerprint module fastening assembly device according to claim 8, characterized in that, A defective product conveyor belt is installed on one side of the re-inspection station.

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