A detection device for PCBA board

Abstract

The invention relates to the technical field of PCBA board detection, and discloses a detection device for PCBA boards, which has the function of quickly realizing the sorting and collection of different PCBA boards according to detection results, and comprises a PCBA board detection machine, a plate turning machine, a clamping plate mechanism, a belt conveyor, and a transmission mechanism; the PCBA board detection machine has two cameras to sequentially take photos and detect the front and back sides of the PCBA board; four belt conveyors are provided and are sequentially arranged from bottom to top; each belt conveyor is provided with a transmission mechanism on both sides above the conveying direction thereof, the transmission mechanism is connected with the clamping plate mechanism in transmission, and when the clamping plate mechanism moves vertically upward, the transmission mechanism moves horizontally toward a C-shaped frame; the device has the function of quickly realizing the sorting and collection of different PCBA boards according to different detection results, effectively improves the detection and sorting efficiency of the PCBA board, and brings convenience to the subsequent PCBA board maintenance operation.

Description

Technical Field

[0001] The present invention relates to the technical field of PCBA board detection, in particular to a detection device for PCBA boards. Background Art

[0002] When performing AOI inspection on PCBA boards, the AOI inspection device generally has three layout modes relative to the PCBA board assembly line; first, independent of the PCBA board assembly line, the PCBA boards are manually placed in the AOI inspection device for inspection, and qualified and unqualified ones can be manually sorted; second, as a part of the PCBA board assembly line, the PCBA boards are inspected by flowing through the AOI inspection device, and unqualified ones can be directly rejected; third, it is directly placed on the PCBA board assembly line, does not participate in the transportation of the PCBA boards, and can only inspect the PCBA boards.

[0003] Since the PCBA board has a front and back side, both sides need to be inspected during AOI inspection. Therefore, there are four types of inspection results: both the front and back sides are unqualified, the front side is qualified but the back side is unqualified, the front side is unqualified but the back side is qualified, and both the front and back sides are qualified. However, the existing AOI inspection method is not convenient for quickly sorting and collecting different PCBA boards according to different inspection results, resulting in the need to improve the inspection and sorting efficiency of PCBA boards, and has a negative impact on subsequent PCBA board maintenance operations. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a detection device for PCBA boards, which has the function of quickly sorting and collecting different PCBA boards according to different detection results, effectively improving the detection and sorting efficiency of PCBA boards, and bringing convenience to subsequent PCBA board maintenance operations.

[0005] To achieve the above object, the present invention provides the following technical solutions: a detection device for PCBA board, comprising a PCBA board detection machine, a plate turning machine, a stand, a slide rail, a slider, a moving machine, a C-shaped frame, a clamping plate mechanism, a belt conveyor, a transmission mechanism, a positioning mechanism and a reset tension spring;

[0006] The PCBA board inspection machine has a fixed frame and two cameras; the flip machine has a PCBA board receiving station, a PCBA board front photo inspection station, a PCBA board flip station, a PCBA board back photo inspection station, and a PCBA board pushing station arranged in sequence along the conveying direction; the two cameras are fixed on the fixed frame, and the two cameras are respectively arranged above the PCBA board front photo inspection station and the PCBA board back photo inspection station; the vertical frame is located downstream of the flip machine, and there are two vertical frames, which are parallel to each other along the conveying direction of the flip machine; a mobile machine is fixed on one side of the top of the two vertical frames close to the flip machine; the output end of the mobile machine extends downward and is fixed with a C-shaped frame to drive the C-shaped frame to reciprocate along the conveying direction of the flip machine and reciprocate along the vertical direction; a clamping plate mechanism is installed at each end of the C-shaped frame;

[0007] The conveying direction of the belt conveyor is consistent with that of the flap machine; there are four belt conveyors, which are installed between two vertical frames from bottom to top through slide rails and sliders; each belt conveyor is provided with a transmission mechanism on both sides above its conveying direction parallel to the transmission direction, and the transmission mechanism is fixed on the top of the corresponding slider; the transmission mechanism is connected to the clamping mechanism, and when the clamping mechanism moves vertically upward, the transmission mechanism moves horizontally toward the C-shaped frame; each transmission mechanism is installed with a positioning mechanism, the positioning mechanism corresponds to the positioning hole on the slide rail one by one, and the positioning mechanism is pluggable and connected to the positioning hole; there are four reset tension springs, which connect the four belt conveyors to the vertical frame one by one.

[0008] Preferably, the flip machine includes a bracket and a plate loading seat, two parallel moving beams are slidably installed on the top of the bracket, the plate loading seat passes through and rotatably connects the two moving beams, and a flip gear is fixedly sleeved on both ends of the axial direction of the plate loading seat, and a flip rack is meshed below the two flip gears, and the flip rack is fixed on the bracket; a plate loading groove and a cylinder are provided on the plate loading seat between the two moving beams, the cylinder and the plate loading groove are arranged opposite to each other, and the output end of the cylinder passes through the plate loading seat and cooperates with the plate loading groove; a support block is fixed on both sides of the plate loading seat on the moving beam, and the two support blocks are connected to the plate loading seat by magnetic attraction, and the two support blocks alternately lift the plate loading seat to a horizontal state.

[0009] Preferably, the clamping plate mechanism includes a connecting plate, a clamping plate and a rotating plate, one end of the rotating plate is arranged against the inner facade of the C-shaped frame and is fixedly connected to a rotating shaft, the rotating shaft passes through the C-shaped frame and extends outside the C-shaped frame, and the other end of the rotating plate is fixedly connected to the connecting plate; the clamping plate is slidably sleeved on the connecting plate, a clamping plate groove is opened on the clamping plate, a top strip is arranged in the clamping plate groove, the top strip is fixed to the connecting plate, and the rotating plate and the clamping plate are connected by an ejection spring; a No. 2 push plate is fixed on the clamping plate, and the No. 2 push plate is an isosceles trapezoidal plate.

[0010] Preferably, the transmission mechanism includes a transmission plate, a fixed plate is fixed at one end of the transmission plate away from the C-shaped frame, the bottom end of the fixed plate extends to the bottom of the transmission plate and is fixed to the slider, a driving groove and a guide groove are opened in the transmission plate, the guide groove is vertically arranged, one end of the driving groove is connected to the guide groove, and the other end of the driving groove is inclined downward toward the side close to the C-shaped frame; the rotating shaft cooperates with the driving groove and the guide groove.

[0011] Preferably, the positioning mechanism includes a driving plate and a positioning plate which are arranged perpendicular to each other, one end of the driving plate penetrates into the fixed plate from the fixed plate toward one end of the C-shaped frame and is slidably connected to the fixed plate, and the other end of the driving plate is transmission connected to the rotating shaft; a reset plate is fixed on the fixed plate, the reset plate abuts against the bottom end surface of the transmission plate, and the reset plate and the fixed plate are connected by a reset spring; the positioning plate is an L-shaped plate, the vertical portion of the positioning plate vertically penetrates the fixed plate and is transmission connected to the driving plate, a positioning column is fixed to the bottom end of the vertical portion of the positioning plate, the positioning column vertically penetrates the fixed plate and is pluggable and connected to the positioning hole, and the transverse portion of the positioning plate is connected to the fixed plate by a limit spring.

[0012] Preferably, a group of No. 1 push plates are fixed at both ends of the frame of the belt conveyor, and the No. 1 push plates are arranged in groups of two and are arranged at intervals along the conveying direction of the belt conveyor. The upper side of one end of the No. 1 push plate away from the belt conveyor is inclined toward the belt conveyor and cooperates with the No. 2 push plate.

[0013] Preferably, it also includes a face changing mechanism and a face changing rack, which are transmission connected to the face changing rack; the face changing mechanism is arranged on the clamping plate mechanism and the C-shaped frame, and there are three groups of face changing racks, which are fixed in corresponding guide grooves from bottom to top, and the teeth of the lower group of face changing racks are facing the flipping machine, and the teeth of the other two groups of face changing racks are facing the side away from the flipping machine.

[0014] Preferably, the face changing mechanism includes a No. 1 magnetic block, a stop spring, a stop pin, a No. 2 magnetic block and a face changing gear; two No. 1 magnetic blocks are provided and embedded in a C-shaped frame located on the upper and lower sides of the rotating shaft, two No. 2 magnetic blocks are provided and embedded in the rotating plate, and the No. 1 magnetic block and the No. 2 magnetic block are magnetically connected; the stop spring and the stop pin are both embedded in the C-shaped frame, and one end of the stop pin abuts against the stop spring, and the other end of the stop pin is pluggably connected to the rotating plate; the face changing gear is an incomplete gear, and the face changing gear is connected to the face changing rack transmission.

[0015] Compared with the prior art, the present invention provides a detection device for PCBA boards, which has the following beneficial effects:

[0016] 1. The panel turning machine and PCBA board inspection machine realize continuous automatic inspection of the front and back sides of the PCBA board to be inspected; through the four belt conveyors arranged from bottom to top, the automatic sorting, collection and transportation of different PCBA boards to be inspected can be realized according to different inspection results, which effectively improves the inspection and sorting efficiency of PCBA boards and brings convenience to the subsequent PCBA board maintenance operations; the four belt conveyors can all be horizontally moved to the bottom of the PCBA board to be inspected and positioned during the vertical upward movement of the PCBA board to be inspected, so that the PCBA board to be inspected can be conveniently lowered to the belt conveyor, and through the cooperation of the No. 1 push plate, the No. 2 push plate and the top bar, the PCBA board to be inspected can be stably placed on the belt conveyor, ensuring the stable transportation of the PCBA board to be inspected by the belt conveyor.

[0017] 2. Through the cooperation of the face-changing gear and the face-changing rack, and setting the face-changing gear as an incomplete gear, setting the face-changing rack into three groups, and installing the three groups in the corresponding guide grooves from top to bottom, and making the teeth of the lower group of face-changing racks face the flip machine, and the upper two groups of face-changing racks face the side away from the flip machine, different PCBA boards to be tested can be placed on different belt conveyors in different states, thereby further facilitating the collection of different PCBA boards to be tested, and further bringing convenience to the subsequent PCBA board maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a partial structural schematic diagram of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the panel turning machine and the moving machine of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the panel turning machine of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the clamping mechanism of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the transmission mechanism and the positioning mechanism of the present invention;

[0024] Figure 7 It is a schematic diagram of the cooperation between the face-changing rack and the guide groove of the present invention;

[0025] Figure 8 It is a structural schematic diagram of the surface changing mechanism of the present invention.

[0026] Among them: 1. PCBA board inspection machine; 101. Camera; 102. Fixed frame; 2. Turning machine; 21. Bracket; 22. Moving beam; 221. Support block; 23. Plate mounting seat; 231. Plate mounting slot; 24. Turning gear; 25. Turning rack; 26. Cylinder; 3. Stand; 31. Slide rail; 311. Positioning hole; 32. Slider; 4. Moving machine; 41. Door frame; 42. Slide; 43. Electric push rod; 44. Motor; 45. Screw; 5. C-shaped frame; 51. No. 1 magnetic block; 52. Anti-rotation spring; 521. Anti-rotation pin; 501. Guide rod; 6. Clamp mechanism; 61. Connecting plate; 611. Top strip; 62. Clamping plate; 621, clamping plate groove; 63, rotating plate; 631, rotating shaft; 632, No. 2 magnetic block; 64, face-changing gear; 65, ejector spring; 66, No. 2 push plate; 7, belt conveyor; 71, No. 1 push plate; 8, transmission mechanism; 81, transmission plate; 811, driving groove; 812, guide groove; 82, fixed plate; 9, face-changing rack; 10, positioning mechanism; 1001, driving plate; 1011, reset plate; 1012, reset spring; 1002, positioning plate; 1021, limit spring; 1003, positioning column; 11, reset tension spring; 12, connecting rod; 13, driving disk; 14, driving shaft; 15, shaft seat. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] For example, see Figures 1 to 6 A detection device for a PCBA board includes a PCBA board detection machine 1, a plate turning machine 2, a stand 3, a moving machine 4, a C-shaped frame 5, a clamping mechanism 6, a belt conveyor 7, a transmission mechanism 8, a face-changing rack 9 and a positioning mechanism 10.

[0029] The panel turning machine 2 has a PCBA board receiving station, a PCBA board front photo inspection station, a PCBA board flipping station, a PCBA board back photo inspection station, and a PCBA board pushing station, which are sequentially arranged along the conveying direction; the PCBA board inspection machine 1 has a fixing frame 102 and two cameras 101, the fixing frame 102 is located beside the panel turning machine 2, the two cameras 101 are fixed on the fixing frame 102, and the two cameras 101 are respectively arranged above the PCBA board front photo inspection station and the PCBA board back photo inspection station to take pictures of the front and back of the PCBA board to be inspected. The inspected PCBA board is loaded into the panel turning machine 2 at the PCBA board receiving station with the front side facing upward, photographed by the corresponding camera 101 at the PCBA board front photo inspection station, turned 180 degrees clockwise at the PCBA board flipping station to make the back side facing upward horizontally, photographed by the corresponding camera 101 at the PCBA board back photo inspection station, and then removed from the panel turning machine 2 at the PCBA board pushing station. The two cameras 101 in the PCBA board inspection machine 1 take pictures of the inspected PCBA board in turn to obtain the front image and the back image of the inspected PCBA board, and compare the front image and the back image of the inspected PCBA board with the corresponding front image and the back image of the standard PCBA board respectively to obtain the visual quality inspection results of the inspected PCBA board: both the front and the back are qualified, the front is qualified but the back is unqualified, the front is unqualified but the back is qualified, and both the front and the back are unqualified.

[0030] The stand 3 is located downstream of the flip machine 2. Two stands 3 are provided. The two stands 3 are parallel to each other along the conveying direction of the flip machine 2. Four slide rails 31 are installed at intervals from bottom to top on the opposite surfaces of the two stands 3. A positioning hole 311 is provided on the top of each slide rail 31 close to the flip machine 2. A mobile machine 4 is commonly fixed to the top of the two stands 3 close to the flip machine 2. A C-shaped frame 5 is fixed to the output end of the mobile machine 4 downwardly. A clamping mechanism 6 is respectively installed at both ends of the C-shaped frame 5. The two clamping mechanisms 6 jointly clamp the PCBA board to be inspected that is removed from the PCBA board push-out workstation.

[0031] The conveying direction of the belt conveyor 7 is consistent with that of the plate turning machine 2; there are four belt conveyors 7, which are installed between the two stands 3 from bottom to top through slide rails 31 and sliders 32; specifically, the sliders 32 are fixed on the belt conveyor 7, and the two ends of the frame of each belt conveyor 7 are slidably connected to the slide rails 31 of corresponding heights through the sliders 32, and the number of sliders 32 on the two ends of the frame of each belt conveyor 7 is greater than or equal to 2. The four belt conveyors 7 transfer different PCBA boards to be inspected from bottom to top according to the visual quality inspection results of the PCBA boards to be inspected.

[0032] In this embodiment, four belt conveyors 7 transfer the PCBA boards to be tested that are unqualified on both the front and back sides, the PCBA boards to be tested that are qualified on both the front and back sides, the PCBA boards to be tested that are unqualified on the front side but qualified on the back side, and the PCBA boards to be tested that are qualified on the front side but unqualified on the back side, in order from bottom to top;

[0033] Or transfer the PCBA boards whose front and back sides are both unqualified, the PCBA boards whose front sides are unqualified but the back sides are qualified, the PCBA boards whose front and back sides are qualified, and the PCBA boards whose front sides are qualified but the back sides are unqualified in sequence;

[0034] Or transfer in sequence: the PCBA board with qualified front side but unqualified back side, the PCBA board with qualified front side and qualified back side, the PCBA board with unqualified front side but qualified back side, the PCBA board with unqualified front side and unqualified back side;

[0035] Or transfer in sequence: the PCBA board under test that is qualified on the front side but unqualified on the back side, the PCBA board under test that is unqualified on the front side but qualified on the back side, the PCBA board under test that is qualified on both the front side and the back side, and the PCBA board under test that is unqualified on both the front side and the back side.

[0036] Each belt conveyor 7 is provided with a transmission mechanism 8 on both sides parallel to the conveying direction thereof, and the transmission mechanism 8 is close to the flapper 2; the transmission mechanism 8 is fixed to the top of the corresponding slider 32 to be fixed together with the belt conveyor 7. A positioning mechanism 10 is installed on each transmission mechanism 8, and the positioning mechanism 10 corresponds to the positioning hole 311 one by one, and the positioning mechanism 10 is pluggably connected to the positioning hole 311.

[0037] The moving machine 4 is used to drive the two clamping mechanisms 6 to reciprocate in the conveying direction of the panel turning machine 2 and to drive the two clamping mechanisms 6 to reciprocate in the vertical direction. When the PCBA board to be inspected moves to the PCBA board push-out station, the moving machine 4 moves the two clamping mechanisms 6 to the PCBA board push-out station, and makes the two clamping mechanisms 6 clamp at both ends of the PCBA board to be inspected, clamp the PCBA board to be inspected, and then cooperate with the panel turning machine 2 to move the PCBA board to be inspected out of the panel turning machine 2 horizontally.

[0038] The moving machine 4, after horizontally moving the PCBA board with inspection out of the panel turning machine 2, moves the two clamping mechanisms 6 and the inspected PCBA board from bottom to top, and according to the visual quality inspection result of the inspected PCBA board, the clamping mechanisms 6 pass through the corresponding number of transmission mechanisms 8 from bottom to top in sequence, so that the inspected PCBA board is moved to the top of the corresponding belt conveyor 7, and then drives the clamping mechanism 6 and the inspected PCBA board to move downward, so that the inspected PCBA board is placed on the corresponding belt conveyor 7. The belt conveyor 7 transports the inspected PCBA board along the conveying direction.

[0039] The number of transmission mechanisms 8 that a single clamping mechanism 6 passes through when moving from bottom to top is determined by the setting height of the belt conveyor 7 that conveys the corresponding PCBA board to be tested, and increases with the increase of the setting height of the belt conveyor 7. Specifically, in this embodiment, the four belt conveyors 7 that are spaced from bottom to top are defined as belt conveyor No. 1, belt conveyor No. 2, belt conveyor No. 3, and belt conveyor No. 4, respectively. When the PCBA board to be tested needs to be placed on belt conveyor No. 1, the clamping mechanism 6 only needs to pass through the transmission mechanism 8 corresponding to belt conveyor No. 1, that is, a single clamping mechanism 6 only needs to pass through one transmission mechanism 8. When the PCBA board to be tested needs to be placed on belt conveyor No. 2, the clamping mechanism 6 needs to pass through the transmission mechanism 8 corresponding to belt conveyor No. 1 and the transmission mechanism 8 corresponding to belt conveyor No. 2, that is, a single clamping mechanism 6 needs to pass through two transmission mechanisms 8; by analogy, the number of transmission mechanisms 8 that a single clamping mechanism 6 needs to pass through to clamp different PCBA boards to be tested can be obtained.

[0040] When the clamping mechanism 6 passes through the transmission mechanism 8 from top to bottom, it will push the transmission mechanism 8 to move horizontally toward the side of the panel turning machine 2, so that the belt conveyor 7 corresponding to the transmission mechanism 8 moves horizontally to the bottom of the PCBA board to be tested; the belt conveyor 7 stops moving after the positioning mechanism 10 is inserted into the positioning hole 311; when the belt conveyor 7 corresponds to the PCBA board to be tested, the clamping mechanism 6 changes from the upward state to the downward state, places the PCBA board to be tested on the belt conveyor 7, and then continues to move downward, disengages from the belt conveyor 7 and pushes the positioning mechanism 10 to disengage from the positioning hole 311 during the disengagement process; after the positioning mechanism 10 disengages from the positioning hole 311, the belt conveyor 7 moves to the side away from the panel turning machine 2, that is, resets, and sends the PCBA board to be tested away; when the belt conveyor 7 does not correspond to the PCBA board to be tested, the clamping mechanism 6 continues to move upward until the corresponding belt conveyor 7 moves to the bottom of the PCBA board to be tested, and then the clamping mechanism 6 changes from the upward state to the downward state.

[0041] It should be noted that, in the process of the clamping mechanism 6 passing through multiple transmission mechanisms 8 from bottom to top, the corresponding multiple belt conveyors 7 are moved horizontally to the bottom of the PCBA board being tested in turn, and the belt conveyors 7 that have not moved to the bottom of the PCBA board being tested will not affect the upward movement of the PCBA board being tested.

[0042] It should be noted that when the clamping mechanism 6 passes through the multiple transmission mechanisms 8 from top to bottom, the multiple positioning mechanisms 10 are disengaged from the corresponding positioning holes 311 in sequence, so that the multiple belt conveyors 7 are reset in sequence.

[0043] The resetting of the belt conveyor 7 is achieved by a resetting tension spring 11 arranged between the belt conveyor 7 and the stand 3. Four resetting tension springs 11 are correspondingly arranged for four belt conveyors 7. After the belt conveyor 7 is reset into place, a slider 32 installed on the transmission mechanism 8 is magnetically connected to the slide rail 31 to keep the belt conveyor 7 and the stand 3 relatively still.

[0044] As a further illustration of the above technical solution, the flap machine 2 includes a bracket 21 and a plate mounting seat 23. Two parallel moving beams 22 are slidably mounted on the top of the bracket 21. The plate mounting seat 23 penetrates and rotatably connects the two moving beams 22. A flap gear 24 is fixedly sleeved on both ends of the axial direction of the plate mounting seat 23. A flap rack 25 is meshed under the two flap gears 24. The flap rack 25 is fixed on the bracket 21. In the process of the moving beam 22 reciprocating along the bracket 21, the meshing of the flap gear 24 and the flap rack 25 can be used to realize The mounting plate seat 23 can reciprocate 180°; the mounting plate seat 23 can reciprocate between the PCBA board receiving station, the PCBA board front photo inspection station, the PCBA board flipping station, the PCBA board back photo inspection station, and the PCBA board pushing station through the reciprocating movement of the moving beam 22 on the bracket 21; the mounting plate seat 23 located between the two moving beams 22 is provided with a mounting plate slot 231 and a cylinder 26, the cylinder 26 is arranged opposite to the mounting plate slot 231, and the output end of the cylinder 26 passes through the mounting plate seat 23 and cooperates with the mounting plate slot 231;

[0045] At the PCBA board receiving station, the board loading slot 231 faces the side away from the C-shaped frame 5, and the PCBA board to be inspected is horizontally inserted into the board loading slot 231 with the front side facing up; at the PCBA board front side photo inspection station, the board loading slot 231 still faces the side away from the C-shaped frame 5; at the PCBA board back side photo inspection station, the board loading slot 231 faces the C-shaped frame 5, and the back side of the PCBA board to be inspected faces up, and at the PCBA board pushing station, the board loading slot 231 still faces the C-shaped frame 5; the change in the direction of the board loading slot 231 is realized at the PCBA board flipping station, that is, in the process of transferring from the PCBA board front side photo inspection station to the PCBA board back side photo inspection station or in the process of transferring from the PCBA board back side photo inspection station to the PCBA board front side photo inspection station.

[0046] In order to keep the plate mounting groove 231 horizontal and stable before and after the direction changes, a support block 221 is fixed on both sides of the plate mounting seat 23 on the movable beam 22. The two support blocks 221 are connected to the plate mounting seat 23 by magnetic attraction, and the two support blocks 221 alternately lift the plate mounting seat 23 to a horizontal state.

[0047] It should be noted that, in order to drive the moving beam 22 to slide back and forth on the bracket 21, the present embodiment also provides a driving mechanism, which includes a driving motor not shown in the figure, a transmission assembly not shown in the figure, a connecting rod 12, a driving disk 13, a driving shaft 14 and a shaft seat 15, the two ends of the connecting rod 12 are respectively hinged to the moving beam 22 and the driving disk 13, one end of the driving shaft 14 is fixedly installed at the center position of one end of the driving disk 13, and the other end of the driving shaft 14 passes through the shaft seat 15 and is connected to the motor output end through the transmission assembly; the driving shaft 14 is rotatably connected to the shaft seat 15 through a bearing; the transmission assembly is a synchronous wheel and synchronous belt transmission assembly, and the connection method with the driving shaft 14 and the motor is the existing technology.

[0048] It should be noted that, in order to realize the reciprocating movement of the C-shaped frame 5 along the conveying direction of the conveyor 2 and the reciprocating movement along the vertical direction, the present embodiment further provides a mobile machine 4, which includes a gantry 41, a slide 42, an electric push rod 43, a motor 44, a screw 45, a bevel gear set, an internal threaded tube and a guide rod 501. The gantry 41 is fixed to the top of the two vertical frames 3, and the slide 42 is horizontally inserted into the gantry 41 from one end of the gantry 41 and is slidably connected to the gantry 41. The slide 42 passes through the top and bottom ends of the gantry 41; the housing of the electric push rod 43 is fixed to the other end of the gantry 41, and the output end of the electric push rod 43 penetrates the gantry 41 and is fixed to the slide 42. The piston movement at the output end of the electric push rod 43 pushes the slide 42 on the gantry 41 The bevel gear set is composed of two bevel gears meshing with each other, one of which is fixed at the output end of the motor 44, and the other is fixedly sleeved on the internal threaded tube, which vertically penetrates and rotatably connects to the slide 42, and the motor 44 is fixed at the top of the slide 42, the screw rod 45 is threadedly connected to the internal threaded tube, and the bottom end of the screw rod 45 is fixedly connected to the C-shaped frame 5, and the bottom end of the guide rod 501 is fixedly connected to the C-shaped frame 5, and the guide rod 501 vertically penetrates and slidably connects to the slide 42; the forward and reverse rotation of the output end of the motor 44 realizes the reciprocating movement of the C-shaped frame 5 in the vertical direction, and the reciprocating movement of the C-shaped frame 5 along the conveying direction of the flap machine 2 is realized through the piston movement of the output end of the electric push rod 43; the electric push rod 43 and the motor 44 act at intervals.

[0049] As a further illustration of the above technical solution, the clamping plate mechanism 6 includes a connecting plate 61, a clamping plate 62 and a rotating plate 63. One end of the rotating plate 63 is arranged against the inner facade of the C-shaped frame 5 and is fixedly connected with a rotating shaft 631. The rotating shaft 631 penetrates the C-shaped frame 5 and extends to the outside of the C-shaped frame 5. The other end of the rotating plate 63 is fixedly connected to the connecting plate 61; the clamping plate 62 is slidably sleeved on the connecting plate 61, and a clamping plate groove 621 is opened on the clamping plate 62. A top strip 611 is arranged in the clamping plate groove 621. The top strip 611 is a rubber strip and is fixed to the connecting plate 61; at the PCBA board pushing station, the cylinder 26 pushes the PCBA board to be tested horizontally away from the board loading groove 231, and pushes the PCBA board to be tested horizontally into the clamping plate groove 621. In the groove 621, the PCBA board to be tested abuts against the top strip 611 at one end away from the connecting plate 61; the rotating plate 63 and the clamping plate 62 are connected by the ejection spring 65; a No. 2 push plate 66 is fixed on the clamping plate 62, and the No. 2 push plate 66 is an isosceles trapezoidal plate; a group of No. 1 push plates 71 are fixed at both ends of the frame of the belt conveyor 7, and the No. 1 push plates 71 are arranged in two groups and are arranged at intervals along the conveying direction of the belt conveyor 7. The No. 1 push plate 71 is arranged on the side away from the end of the belt conveyor 7 and is inclined to the belt conveyor 7 and cooperates with the No. 2 push plate 66. The No. 2 push plate 66 is not simultaneously connected to the two No. 1 push plates 71 in the same group by transmission, and the No. 2 push plate 66 can be connected with the corresponding No. 1 push plate 7 before and after turning over 180°. 1 transmission connection, when the second push plate 66 is transmission connected with the first push plate 71, as the second push plate 66 moves downward, the second push plate 66 simultaneously moves to the side away from the belt conveyor 7, driving the corresponding clamping plate 62 to move toward the rotating plate 63 and gradually separate from the PCBA board to be tested; through the structure set in this way, after the belt conveyor 7 corresponding to the PCBA board to be tested is translated to the bottom of the PCBA board to be tested, the two clamping plate mechanisms 6 and the PCBA board to be tested move downward synchronously, and in the process that the second push plate 66 moves downward and contacts the first push plate 71 and continues to move downward, the PCBA board to be tested gradually approaches the belt conveyor 7, the clamping plate 62 gradually separates from the PCBA board to be tested, compresses the ejection spring 65, and in the process that the second push plate 66 moves downward and contacts the first push plate 71 and continues to move downward, the PCBA board to be tested gradually approaches the belt conveyor 7, the clamping plate 62 gradually separates from the PCBA board to be tested, and the ejection spring 65 is compressed, and in the process that the ejection spring 65 is compressed, ... When the PCBA board is placed on the belt conveyor 7, the clamping plate 62 is completely separated from the PCBA board to be tested. At this time, the top bar 611 is still in contact with the PCBA board to be tested, and then the two clamping plate mechanisms 6 continue to move downward, so that the top bar 611 moves downward and separates from the PCBA board to be tested, so as to complete the placement operation of the PCBA board to be tested on the belt conveyor 7; in the process of the top bar 611 separating from the testing PCBA board, the ejection spring 65 remains in a compressed state, and after the top bar 611 separates from the testing PCBA board and the second push plate 66 moves downward and separates from the first push plate 71, the ejection spring 65 is reset to push the clamping plate 62 back to its original position; through the above structure, the movement of the PCBA board to be tested between the plate turning machine 2 and the belt conveyor 7 is realized.

[0050] The transmission mechanism 8 includes a transmission plate 81, and a fixed plate 82 is fixed at one end of the transmission plate 81 away from the C-shaped frame 5. The bottom end of the fixed plate 82 extends to the bottom of the transmission plate 81 and is fixed to the slider 32. A driving groove 811 and a guide groove 812 are provided in the transmission plate 81. The guide groove 812 is vertically arranged, one end of the driving groove 811 is connected to the guide groove 812, and the other end of the driving groove 811 is inclined downwardly arranged toward the side close to the C-shaped frame 5; the rotating shaft 631 cooperates with the driving groove 811 and the guide groove 812; during the upward movement process, the rotating shaft 631 enters the driving groove 811 from the end of the driving groove 811 away from the guide groove 812, and during the upward movement process, cooperates with the driving groove 811 to push the transmission plate 81 to move toward one side of the C-shaped frame 5, so as to realize the movement of the belt conveyor 7 to the bottom of the PCBA board to be detected. When the rotating shaft 631 moves to the connection between the driving groove 811 and the guide groove 812, the belt conveyor 7 moves to a suitable position below the PCBA board to be detected.

[0051] After the belt conveyor 7 moves to a suitable position below the PCBA board to be inspected, the rotating shaft 631 can choose to continue to move upward along the guide groove 812 or move downward along the guide groove 812 according to whether the belt conveyor 7 moved below the PCBA board to be inspected corresponds to the PCBA board to be inspected. That is, when the belt conveyor 7 corresponds to the PCBA board to be inspected, the rotating shaft 631 moves downward to place the PCBA board to be inspected on the belt conveyor 7; when the belt conveyor 7 does not correspond to the PCBA board to be inspected, the rotating shaft 631 continues to move upward until the corresponding belt conveyor 7 moves below the PCBA board to be inspected, and then the PCBA board to be inspected is placed on the belt conveyor 7.

[0052] The positioning mechanism 10 includes a driving plate 1001 and a positioning plate 1002 which are arranged perpendicular to each other. One end of the driving plate 1001 penetrates the fixing plate 82 from the fixing plate 82 toward one end of the C-shaped frame 5 and is slidably connected with the fixing plate 82. The other end of the driving plate 1001 is transmission-connected with the rotating shaft 631. A reset plate 1011 is fixed on the fixing plate 82. The reset plate 1011 abuts against the bottom end surface of the driving plate 81. The reset plate 1011 and the fixing plate 82 are connected by a reset spring 1 012 connection; after the clamping plate 62 is pushed back to its original position by the ejection spring 65, the rotating shaft 631 continues to move downward in the guide groove 812, and continues to move downward after contacting the driving plate 1001, so as to push the driving plate 1001 into the fixed plate 82 and compress the reset spring 1012; after the rotating shaft 631 moves down to the bottom of the guide groove 812, the rotating shaft 631 moves horizontally toward the flipping machine 2 under the action of the electric push rod 43, and the driving plate 1001 is reset under the action of the reset spring 1012.

[0053] The positioning plate 1002 is an L-shaped plate. The vertical portion of the positioning plate 1002 vertically penetrates the fixed plate 82 and is transmission-connected to the driving plate 1001. The positioning plate 1002 moves upward when the fixed plate 82 is pushed into the fixed plate 82. The horizontal portion of the positioning plate 1002 is connected to the fixed plate 82 through a limit spring 1021. The limit spring 1021 is stretched and deformed during the upward movement of the positioning plate 1002, and pushes the positioning plate 1002 downward during the resetting process of the driving plate 1001. The bottom end of the vertical portion of the positioning plate 1002 is fixed with a positioning column 1003 The positioning column 1003 moves with the positioning plate 1002, and the positioning column 1003 vertically penetrates the fixed plate 82 and is pluggable with the positioning hole 311; through the structure set in this way, during the horizontal movement of the belt conveyor 7, the positioning column 1003 contacts the top surface of the slide rail 31, and when the belt conveyor 7 moves to a suitable position below the PCBA board to be tested, the positioning column 1003 is inserted into the positioning hole 311 to position the belt conveyor 7. After the positioning column 1003 moves up to the fixed plate 82, the reset spring 11 resets the belt conveyor 7.

[0054] It should be noted that in order for the belt conveyor 7 to be smoothly reset by the reset spring 11, in the process from the beginning of the contact between the rotating shaft 631 and the driving plate 1001 to the time when the rotating shaft 631 just moves to the bottom of the guide groove 812, the moving stroke of the rotating shaft 631 is greater than the hole depth of the positioning hole 311, so that at the moment when the rotating shaft 631 moves to the guide groove 812, that is, at the moment when the belt conveyor 7 is reset, the positioning column 1003 is still in the fixed plate 82.

[0055] For example 2, please refer to Figures 7 and 8 A detection device for PCBA board, based on the first embodiment, further includes a face-changing mechanism and a face-changing rack 9, the face-changing mechanism is in driving connection with the face-changing rack 9; the face-changing mechanism is arranged on the clamping plate mechanism 6 and the C-shaped frame 5, and the face-changing rack 9 is arranged in three groups, and the three groups of face-changing racks 9 are fixed in the corresponding guide grooves 812 from bottom to top, and the teeth of the lower group of face-changing racks 9 face toward the flipping machine 2, and the teeth of the other two groups of face-changing racks 9 face toward the side away from the flipping machine 2. The face-changing racks 9 can be arranged to be one per group or two per group, and when it is arranged to be two per group, the two face-changing racks 9 of the same group are respectively fixed in two guide grooves 812 at the same height.

[0056] The face-changing mechanism includes a first magnetic block 51, a rotation-stopping spring 52, a rotation-stopping pin 521, a second magnetic block 632 and a face-changing gear 64; two first magnetic blocks 51 are provided and embedded in the C-shaped frame 5 located on the upper and lower sides of the rotating shaft 631, two second magnetic blocks 632 are provided and embedded in the rotating plate 63, and the first magnetic block 51 and the second magnetic block 632 are magnetically connected; the first magnetic block 51 and the second magnetic block 632 cooperate to keep the clamping block 62 horizontal or to turn the clamping block 62 from a nearly horizontal state to a horizontal state; the rotation-stopping spring 5 2 and the stop pin 521 are both embedded in the C-shaped frame 5, and one end of the stop pin 521 abuts against the stop spring 52, and the other end of the stop pin 521 is pluggably connected to the rotating plate 63; the stop pin 521 is a round table with one end small and the other end large, and the small end of the stop pin 521 is inserted into the rotating plate 63; after the stop pin 521 is inserted into the rotating plate 63, the stop pin 521, the first magnetic block 51 and the second magnetic block 632 jointly keep the clamping plate 62 in a horizontal state; when the rotating plate 63 rotates, the stop pin 521 can be pushed out of the rotating plate 63.

[0057] The face-changing gear 64 is transmission-connected with the face-changing rack 9. Specifically, the face-changing gear 64 is an incomplete gear, and when the clamping plate groove 621 on the clamping plate 62 is in a state where it can cooperate with the PCBA board pushing-out station, the teeth of the face-changing gear 64 face downward; when the teeth of the face-changing gear 64 face downward, in the process of the rotating shaft 631 moving downward in the guide groove 812, the face-changing gear 64 can mesh with a group of face-changing racks 9 with teeth facing away from the side of the flipping machine 2, and flip during the meshing process, so that the clamping plate 62 is flipped from an initial horizontal state (a state when the PCBA board to be tested is pushed into the clamping plate groove 621 in cooperation with the PCBA board pushing-out station) to another horizontal state, and the state of the PCBA board to be tested is changed from a back-side horizontal upward state to a front-side horizontal upward state; when the teeth of the face-changing gear 64 face downward, the face-changing gear 64 cannot mesh with the face-changing rack 9 with teeth facing the flipping machine.

[0058] When the front side of the PCBA board being inspected is facing upward, the teeth of the face changing gear 64 are facing upward and can no longer mesh with the face changing rack 9 whose teeth are facing away from the flipping machine 2, but can mesh with the face changing rack 9 whose teeth are facing the flipping machine; when the face changing gear 64 is meshing with the face changing rack 9 whose teeth are facing the flipping machine, as the rotating shaft 631 moves downward in the guide groove 812, the face changing gear 64 reverses, causing the clamping block 62 to reverse to its initial horizontal state.

[0059] In this embodiment, the face-changing gear 64 and the face-changing rack 9 cooperate to change the state of the PCBA board to be tested before being placed on the belt conveyor 7, so that the PCBA board to be tested can be placed on the belt conveyor 7 with the front side facing up or with the back side facing up. In combination with four belt conveyors 7, different PCBA boards to be tested can be placed on different belt conveyors 7 in different states according to different test results.

[0060] Specifically, when it is necessary to place the PCBA board to be inspected on the belt conveyor 7 with the back side facing upward, the rotating shaft 631 moves downward in the guide groove 812 where the face-changing rack 9 is not installed to place the PCBA board to be inspected on the belt conveyor 7, or moves downward in the guide groove 812 where the face-changing rack 9 is installed with the teeth facing the flipper 2 to place the PCBA board to be inspected on the belt conveyor 7.

[0061] When it is necessary to place the PCBA board to be inspected on the belt conveyor 7 with the front side facing upward, the rotating shaft 631 moves downward in the guide groove 812 of the face-changing rack 9 installed with the teeth facing the side away from the flip machine 2 to place the PCBA board to be inspected on the belt conveyor 7.

[0062] It should be noted that, in the present embodiment, when the inspection results of the PCBA board to be inspected are that both the front and back sides are unqualified or the front side is qualified but the back side is unqualified, the PCBA board to be inspected is placed on the belt conveyor 7 with the back side facing upward; when the inspection results of the PCBA board to be inspected are that both the front and back sides are qualified or the front side is unqualified but the back side is qualified, the PCBA board to be inspected is placed on the belt conveyor 7 with the front side facing upward.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detection device for a PCBA board, characterized in that: It comprises a PCBA board inspection machine (1), a panel turning machine (2), a stand (3), a slide rail (31), a slider (32), a moving machine (4), a C-shaped frame (5), a clamping plate mechanism (6), a belt conveyor (7), a transmission mechanism (8), a positioning mechanism (10) and a reset tension spring (11); The PCBA board inspection machine (1) comprises a fixing frame (102) and two cameras (101); the panel turning machine (2) comprises a PCBA board receiving station, a PCBA board front side photo inspection station, a PCBA board flipping station, a PCBA board back side photo inspection station, and a PCBA board ejecting station, which are sequentially arranged along the conveying direction; the two cameras (101) are both fixed on the fixing frame (102), and the two cameras (101) are respectively arranged at the PCBA board front side photo inspection station and the PCBA board back side photo inspection station. The vertical frame (3) is located downstream of the panel turning machine (2), two vertical frames (3) are provided, and the two vertical frames (3) are parallel to each other along the conveying direction of the panel turning machine (2); the moving machine (4) is fixed to the top of the two vertical frames (3) on one side close to the panel turning machine (2); the output end of the moving machine (4) extends downward and is fixed with the C-shaped frame (5) to drive the C-shaped frame (5) to reciprocate along the conveying direction of the panel turning machine (2) and reciprocate along the vertical direction; one of the clamping plate mechanisms (6) is respectively installed at both ends of the C-shaped frame (5); The conveying direction of the belt conveyor (7) is consistent with the conveying direction of the flap machine (2); four belt conveyors (7) are provided, and are installed between the two frames (3) from bottom to top through the slide rails (31) and the sliders (32); each of the belt conveyors (7) is provided with a transmission mechanism (8) on both sides above the belt conveyor (7) parallel to its conveying direction, and the transmission mechanism (8) is fixed on the top of the corresponding slider (32); the transmission mechanism (8) is connected to the clamping mechanism (6) in a transmission manner, and when the clamping mechanism (6) moves vertically upward, the transmission mechanism (8) moves horizontally toward the C-shaped frame (5); each of the transmission mechanisms (8) is installed with a positioning mechanism (10), the positioning mechanism (10) corresponds to the positioning hole (311) on the slide rail (31) one by one, and the positioning mechanism (10) is pluggably connected to the positioning hole (311); four reset tension springs (11) are provided, and connect the four belt conveyors (7) to the frames (3) one by one.

2. The detection device for a PCBA board according to claim 1, characterized in that: The panel turning machine (2) comprises a bracket (21) and a panel mounting seat (23). Two mutually parallel moving beams (22) are slidably mounted on the top of the bracket (21). The panel mounting seat (23) penetrates and rotatably connects the two moving beams (22). A panel turning gear (24) is fixedly sleeved on both ends of the axial direction of the panel mounting seat (23). A panel turning rack (25) is meshed under the two panel turning gears (24). The panel turning rack (25) is fixed on the bracket (21); and is located between the two moving beams (22). The plate mounting seat (23) is provided with a plate mounting groove (231) and a cylinder (26), the cylinder (26) and the plate mounting groove (231) are arranged opposite to each other, and the output end of the cylinder (26) passes through the plate mounting seat (23) and cooperates with the plate mounting groove (231); a supporting block (221) is fixed on each side of the plate mounting seat (23) on the movable beam (22), the two supporting blocks (221) are connected to the plate mounting seat (23) by magnetic attraction, and the two supporting blocks (221) alternately lift the plate mounting seat (23) to a horizontal state.

3. The detection device for a PCBA board according to claim 2, characterized in that: The clamping plate mechanism (6) comprises a connecting plate (61), a clamping plate (62) and a rotating plate (63); one end of the rotating plate (63) is arranged against the inner vertical surface of the C-shaped frame (5) and is fixedly connected to a rotating shaft (631); the rotating shaft (631) passes through the C-shaped frame (5) and extends to the outside of the C-shaped frame (5); the other end of the rotating plate (63) is fixedly connected to the connecting plate (61); the clamping plate (62) is slidably sleeved on the connecting plate (61); a clamping plate groove (621) is provided on the clamping plate (62); a top bar (611) is provided in the clamping plate groove (621); the top bar (611) is fixed to the connecting plate (61); the rotating plate (63) and the clamping plate (62) are connected via an ejection spring (65); a second push plate (66) is fixed on the clamping plate (62); the second push plate (66) is an isosceles trapezoidal plate.

4. The detection device for a PCBA board according to claim 3, characterized in that: The transmission mechanism (8) comprises a transmission plate (81); a fixing plate (82) is fixed to one end of the transmission plate (81) away from the C-shaped frame (5); the bottom end of the fixing plate (82) extends to below the transmission plate (81) and is fixed to the slider (32); a driving groove (811) and a guide groove (812) are provided in the transmission plate (81); the guide groove (812) is vertically arranged; one end of the driving groove (811) is connected to the guide groove (812); the other end of the driving groove (811) is inclined downwardly arranged toward a side close to the C-shaped frame (5); and the rotating shaft (631) cooperates with the driving groove (811) and the guide groove (812).

5. The detection device for a PCBA board according to claim 4, characterized in that: The positioning mechanism (10) comprises a driving plate (1001) and a positioning plate (1002) which are arranged perpendicular to each other; one end of the driving plate (1001) penetrates the fixing plate (82) from the fixing plate (82) toward one end of the C-shaped frame (5) and is slidably connected to the fixing plate (82); the other end of the driving plate (1001) is drivingly connected to the rotating shaft (631); a reset plate (1011) is fixed to the fixing plate (82); the reset plate (1011) abuts against the bottom end surface of the driving plate (81); the reset plate (1011) and the fixing plate (82) is connected via a reset spring (1012); the positioning plate (1002) is an L-shaped plate, the vertical portion of the positioning plate (1002) vertically penetrates the fixed plate (82) and is transmission-connected to the drive plate (1001), a positioning column (1003) is fixed to the bottom end of the vertical portion of the positioning plate (1002), the positioning column (1003) vertically penetrates the fixed plate (82) and is pluggably connected to the positioning hole (311), and the transverse portion of the positioning plate (1002) is connected to the fixed plate (82) via a limit spring (1021).

6. The detection device for a PCBA board according to claim 5, characterized in that: A group of No. 1 push plates (71) are respectively fixed at both ends of the frame of the belt conveyor (7), and the No. 1 push plates (71) are arranged in groups of two and are arranged at intervals along the conveying direction of the belt conveyor (7). The No. 1 push plates (71) are arranged at an angle to the belt conveyor (7) on the upper side of one end away from the belt conveyor (7) and cooperate with the No. 2 push plates (66).

7. The detection device for a PCBA board according to claim 5, characterized in that: It also includes a face-changing mechanism and a face-changing rack (9), wherein the face-changing mechanism is in driving connection with the face-changing rack (9); the face-changing mechanism is arranged on the clamping plate mechanism (6) and the C-shaped frame (5), and the face-changing rack (9) is provided with three groups, wherein the three groups of face-changing racks (9) are fixed in corresponding guide grooves (812) from bottom to top, and the teeth of the lower group of face-changing racks (9) face the flipping machine (2), and the teeth of the other two groups of face-changing racks (9) face the side away from the flipping machine (2).

8. The detection device for a PCBA board according to claim 7, characterized in that: The face-changing mechanism comprises a first magnetic block (51), a rotation-stopping spring (52), a rotation-stopping pin (521), a second magnetic block (632) and a face-changing gear (64); two first magnetic blocks (51) are provided and embedded in a C-shaped frame (5) located at the upper and lower sides of the rotating shaft (631); two second magnetic blocks (632) are provided and embedded in a rotating plate (63); the first magnetic block (51) and the second magnetic block (632) are magnetically connected; the rotation-stopping spring (52) and the rotation-stopping pin (521) are both embedded in the C-shaped frame (5); one end of the rotation-stopping pin (521) abuts against the rotation-stopping spring (52); the other end of the rotation-stopping pin (521) is pluggably connected to the rotating plate (63); the face-changing gear (64) is an incomplete gear, and the face-changing gear (64) is drivingly connected to the face-changing rack (9).

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