Automatic overturning structure of PCB (Printed Circuit Board)

Abstract

The invention relates to an automatic PCB overturning structure, the automatic PCB overturning structure comprises a main body, an overturning frame, an overturning assembly and a conveying mechanism, the overturning frame is rotatably arranged on the main body through the overturning assembly, and the conveying mechanism is arranged on the main body; the PCB conveying device further comprises a stopping mechanism, the stopping mechanism comprises a stopping block and a driving assembly, the stopping block is arranged on the overturning frame in a sliding mode through the driving assembly, and the stopping block can stop PCBs located in the conveying mechanism. The method has the effect of ensuring the efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of PCB board processing, and in particular to an automatic flipping structure of a PCB board. Background Art

[0002] With the rapid development of the electronics industry, PCB (printed circuit board), as an important component of electronic products, has increasingly higher requirements for quality and precision during the production and assembly process.

[0003] At present, a Chinese patent with publication number CN109526150A discloses a flip adjustment device for PCB board welding and dispensing, including a bracket and a flip frame installed thereon, two adjustment mechanisms are installed inside the flip frame, a flip drive motor is installed on the bottom side wall of the bracket, and the transmission shaft of the flip drive motor is connected to the first driving wheel; a first driven wheel is arranged above the first driving wheel, and a first conveyor belt is sleeved between the first driving wheel and the first driven wheel; the adjustment mechanism is composed of a side frame and a top pulley located on the side wall.

[0004] When the flip frame is flipping, the first conveyor belt and the top pulley drive the flip frame to rotate, and the first conveyor belt and the top pulley drive the PCB board to flip 180 degrees; however, when the flip frame flips to 90 degrees, the PCB board between the first conveyor belt and the top pulley will fall off, and the operator has to stop the machine to pick up the fallen PCB board, which reduces the overall efficiency. Summary of the invention

[0005] In order to ensure efficiency, the present application provides a PCB board automatic flipping structure.

[0006] The present application provides a PCB board automatic flipping structure, which adopts the following technical solutions: A PCB board automatic flipping structure comprises a main body, a flip frame, a flip assembly and a conveying mechanism, wherein the flip frame is rotatably arranged on the main body through the flip assembly, and the conveying mechanism is arranged on the main body; and further comprises a blocking mechanism, wherein the blocking mechanism comprises a blocking block and a driving assembly, wherein the blocking block is slidably arranged on the flip frame through the driving assembly, and the blocking block can block the PCB board located in the conveying mechanism.

[0007] By adopting the above technical solution, when the PCB board enters the conveying mechanism of the flip frame, the driving component is started, and the driving component drives the blocking block to move, so that the blocking block can block the PCB board on the conveying mechanism; in this way, when the flip component drives the flip frame to rotate, the PBC board is still on the conveying mechanism due to the blocking of the blocking block and will not fall out of the conveying mechanism; after the flip component drives the flip frame to rotate 180 degrees, the conveying mechanism conveys the flipped PBC board out, and finally the flip frame is flipped to its original state; the provided blocking mechanism can reduce the phenomenon of the PBC board falling from the conveying mechanism, thereby ensuring efficiency.

[0008] Optionally, the flip frame includes a connecting frame and a flip block, the flip blocks are provided at both ends of the connecting frame; the flip assembly is connected to the flip block; the conveying mechanism is provided on each flip block; the conveying mechanism includes a first conveyor belt, a second conveyor belt and a rotating assembly, the first conveyor belt and the second conveyor belt are both rotatably provided on the flip block; the rotating assembly is provided on the flip block, and the first conveyor belt and the second conveyor belt are both connected to the rotating assembly.

[0009] By adopting the above technical solution, the PBC board that needs to be turned over moves to between the first conveyor belt and the second conveyor belt, and then the rotating component is started, the rotating component drives the first conveyor belt and the second conveyor belt to rotate, and the first conveyor belt and the second conveyor belt drive the PBC to move; when the PBC board moves to a certain position of the flip block, the blocking block blocks the PBC board; then the flip component is started, and the flip component drives the flip block to rotate.

[0010] Optionally, the driving assembly includes a first connecting block and a driving cylinder, the first connecting block is arranged on the blocking block, the cylinder body of the driving cylinder is arranged on the first connecting block, and the blocking block is connected to the piston rod of the driving cylinder.

[0011] By adopting the above technical solution, when the PBC board needs to be blocked, the driving cylinder is started, and the piston rod of the driving cylinder drives the blocking block to move, so that the blocking block blocks the PBC board located between the first conveyor belt and the second conveyor belt; the set driving component structure is simple and easy to operate, thereby improving efficiency.

[0012] Optionally, the first connecting block is slidably arranged on the flip block; an adjustment mechanism is arranged on the flip block, and the adjustment mechanism includes a second connecting block, a slider, an adjustment roller, a bidirectional screw rod, a first gear, a first adjustment block, a first rack and a moving assembly, and the second connecting block is arranged on the flip block; two sliders are provided, and both sliders are slidably arranged on the second connecting block; the adjustment roller is arranged on the slider, and the adjustment rollers on the two sliders are respectively pressed against the first conveyor belt and the second conveyor belt; the bidirectional screw rod passes through the two sliders, and the two sliders are respectively threadedly connected to the two ends of the bidirectional screw rod; the first gear key is connected to the bidirectional screw rod; the first adjustment block is arranged on the first connecting block, and the first rack rod is arranged on the first adjustment block and meshes with the first gear; the moving assembly is arranged on the flip block and connected to the first connecting block.

[0013] By adopting the above technical solution, after the first conveyor belt and the second conveyor belt move the PCB board to a certain position of the flip block, the moving component is started, and the moving component drives the first connecting block to slide on the flip block; the first adjusting block on the first connecting block will move, the first rack on the first adjusting block drives the first gear to rotate, the first gear drives the bidirectional screw to rotate, the bidirectional screw drives the two sliders to move away from each other, the adjustment rollers on the two sliders will move away from each other, and the two adjusting blocks will respectively tension the first conveyor belt and the second conveyor belt, so that the first conveyor belt and the second conveyor belt are both tensioned and pressed against the PCB board; therefore, the adjustment mechanism provided can improve the stability of the PCB board on the first conveyor belt and the second conveyor belt; and multiple PCB boards can be arranged on the first conveyor belt and the second conveyor belt, and when the first conveyor belt and the second conveyor belt are both pressed against the PCB board, the phenomenon of collision of multiple PCB boards when flipping can also be reduced.

[0014] Optionally, the first rack is arranged at an end of the first adjusting block away from the first connecting block; a locking mechanism connected to the bidirectional screw rod is arranged on the flip block, and the locking mechanism includes a first locking block, a second adjusting block, a second locking block and a spring, the first locking block is arranged on the first connecting block, and a first through hole for the first locking block to pass through is provided on the bidirectional screw rod; a first groove is provided on the first locking block, and the second adjusting block is slidably arranged in the first groove, the second locking block is arranged on the second adjusting block, and the second locking block can also pass through the first through hole; one end of the spring is connected to the second adjusting block and the other end is connected to the second adjusting block.

[0015] By adopting the above technical solution, it is not certain that the PCB board moves to the position of the turning frame, because the first conveyor belt and the second conveyor belt cannot be tensioned again after being tensioned to a certain degree; when the first connecting block moves, the first connecting block drives the first locking block to move toward the end close to the bidirectional screw rod; when the first rack on the first adjusting block and the first gear on the bidirectional screw rod are about to separate, the second locking block will first contact the bidirectional screw rod, and the spring will be in a compressed state; when the second locking block is aligned with the first through hole on the bidirectional screw rod, the spring restores its elastic deformation, and the end of the second locking block away from the first locking block will enter the first through hole of the bidirectional screw rod; when the first connecting block continues to move, the end of the first locking block close to the second locking block and the second locking block will pass through the first through hole on the bidirectional screw rod, and the first rack is no longer meshed with the first gear, so that the tensioning roller still maintains the state of tensioning the first conveyor belt and the second conveyor belt.

[0016] Optionally, the flip assembly includes a flip shaft, a first fixed block and a flip motor, wherein two flip shafts are provided, the two flip shafts correspond to two flip blocks, and one end of the flip shaft is rotatably connected to the main body; the first fixed block is provided at an end of the flip shaft away from the main body and connected to the flip block; the flip motor is provided on the main body and connected to one of the flip shafts.

[0017] By adopting the above technical solution, the flip motor is started, the output shaft of the flip motor drives the flip shaft to rotate, the flip shaft drives the first fixed block to rotate, the first fixed block drives the flip block to rotate, and through the conduction effect of the connecting frame, the two flip blocks will rotate synchronously.

[0018] Optionally, a placement block is provided on the main body, a placement hole is provided on the placement block, and the air pipe of the driving cylinder is located in the placement hole; a rotating block is rotatably connected to the placement block, and the air pipe of the driving cylinder is connected to the rotating block; a tensioning mechanism is provided on the flipping block, and the tensioning mechanism includes a first rotating shaft, a third connecting block, a second rotating shaft, a tensioning block and a first adjustment component, the first rotating shaft is rotatably set on the flipping block; the third connecting block is set on the first rotating shaft; the second rotating shaft is rotatably set on the third connecting block; the tensioning block is set on the second rotating shaft, a second through hole is provided on the tensioning block, and the air pipe of the driving cylinder can pass through the second through hole; the first adjustment component is set on the flipping block, and the first rotating shaft is connected to the first adjustment component.

[0019] By adopting the above technical solution, when the flip block does not rotate, the third connecting block is perpendicular to the flip block, and the air pipe between the rotating block and the driving cylinder will pass through the second through hole on the tensioning block. The air pipe between the tensioning block and the rotating block has a certain length, and the tensioning block tensions this part of the air pipe; when the flip block rotates, the first adjustment component drives the first rotating shaft to rotate, the first rotating shaft drives the third connecting block to rotate, and the second rotating shaft on the third connecting block drives the second tensioning block to rotate; when the third connecting block changes from a state perpendicular to the flip block to a state with a small acute angle or parallel to the flip block, the length of the air pipe between the tensioning block and the rotating block becomes longer, but the tensioning block still keeps the air pipe in a tensioned state; therefore, the set tensioning mechanism can reduce the phenomenon that the air pipe on the driving cylinder becomes entangled when the flip block is flipped.

[0020] Optionally, the third connecting block includes a first adjusting block, a second adjusting block and a second adjusting assembly, the first adjusting block is connected to the first rotating shaft, and a second groove is provided on the first adjusting block; the second adjusting block is slidably set in the second groove, and the second rotating shaft is rotatably set on the second adjusting block; the second adjusting assembly is set on the flip block and connected to the second adjusting block.

[0021] By adopting the above technical solution, when the flip block flips, the second adjustment assembly drives the second adjustment block to slide in the second groove of the first adjustment block, so that the length of the third connecting block becomes shorter as a whole.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The blocking mechanism can reduce the phenomenon of PBC boards falling from the conveying mechanism, thereby ensuring efficiency; 2. The drive assembly is simple in structure and easy to operate, thereby improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the automatic flipping structure of the PCB board in the embodiment of the present application; Figure 2 This is a schematic diagram of the structure of the blocking mechanism in the embodiment of the present application; Figure 3 This is a schematic diagram of the structure of the conveying mechanism in the embodiment of the present application; Figure 4 This is a structural schematic diagram of the adjustment mechanism in the embodiment of the present application; Figure 5 This is a schematic diagram of the structure of the locking mechanism in the embodiment of the present application; Figure 6 This is a schematic diagram of the structure of the first adjustment component in the embodiment of the present application; Figure 7This is a schematic diagram of the structure of the third connection block in the embodiment of the present application; Figure 8 Schematic diagram of the structure of the second adjustment component in the embodiment of the present application.

[0024] 1. Main body; 111. Inlet; 112. Outlet; 12. Placement block; 13. Rotation block; 2. Turning frame; 21. Connecting frame; 22. Turning block; 221. Cavity; 3. Turning assembly; 31. Turning shaft; 32. First fixed block; 33. Turning motor; 4. Conveying mechanism; 41. First conveyor belt; 42. Second conveyor belt; 43. Rotation assembly; 431. Rotation roller; 432. Second gear; 433. Third gear; 434. Rotation motor; 5. Blocking mechanism; 51. Blocking block; 52. Driving assembly; 521. First connecting block; 522. Driving cylinder; 6. Adjusting mechanism; 61. Second connecting block; 611. Slide; 62. Sliding block; 63. Adjusting roller; 64. Bidirectional screw rod; 65. First gear; 66. First adjusting block; 67. First rack; 68. Moving assembly; 681. Moving motor; 682. Fourth gear; 683, second rack; 69, adjustment shaft; 691, first through hole; 7, locking mechanism; 71, first locking block; 72, second adjustment block; 73, second locking block; 74, spring; 8, tensioning mechanism; 81, first rotating shaft; 82, tensioning block; 821, second through hole; 83, first adjustment assembly; 831, fixed shaft; 832, fifth gear; 833, third rotating shaft; 834, sixth gear; 835, first bevel gear ;836, fourth rotating shaft;837, second bevel gear;838, third bevel gear;839, fourth bevel gear;9, third connecting block;91, first adjusting block;92, second adjusting block;93, second adjusting assembly;931, fifth rotating shaft;932, second fixed block;933, seventh gear;934, sixth rotating shaft;935, eighth gear;936, fifth bevel gear;937, adjusting screw;938, sixth bevel gear. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-8 This application is described in further detail.

[0026] The embodiment of the present application discloses an automatic flipping structure for a PCB board.

[0027] refer to Figure 1 and Figure 2A PCB board automatic flipping structure includes a main body 11, a flipping cavity is formed in the main body 11, and an inlet 111 and an outlet 112 connected to the flipping cavity are opened at one end of the main body 11; a flipping component 3 is arranged in the flipping cavity of the main body 11, a flipping frame 2 is arranged on the flipping component 3, and a conveying mechanism 4 is arranged on the flipping frame 2; a blocking mechanism 5 is arranged on one end of the flipping frame 2 close to the outlet 112.

[0028] The PCB board to be turned over enters the conveying mechanism 4 in the turning chamber. After the conveying mechanism 4 drives the PCB board to move a certain distance, the blocking mechanism 5 is started to block the PCB board on the conveying mechanism 4; then the turning component 3 is started, and the turning component 3 drives the turning frame 2 to rotate 180 degrees clockwise in the turning chamber to complete the turning operation of the PCB board; then the PCB board on the conveying mechanism 4 moves out of the turning chamber of the main body 11 along the path entering the conveying mechanism 4; finally, the turning component 3 is started again to rotate the turning frame 2 180 degrees counterclockwise, so that the blocking mechanism 5 returns to its original position relative to the main body 11.

[0029] refer to Figure 2 and Figure 3 The flip assembly 3 includes two flip shafts 31, which are rotatably connected to two opposite side walls of the main body 11 and are both located in the flip cavity; a flip motor 33 is fixedly connected to the main body 11, and the output shaft of the flip motor 33 is connected to one of the flip shafts 31. The ends of the two flip shafts 31 close to each other are fixedly connected to a first fixing block 32.

[0030] The flip frame 2 includes a connecting frame 21, and a flip block 22 is fixedly connected to both ends of the connecting frame 21. The two flip blocks 22 correspond to two flip shafts 31, and a cavity 221 is opened on the two flip blocks 22. The end of the flip shaft 31 away from the connection with the main body 11 and the first fixed block 32 are both located in the cavity 221 of the flip block 22, and the first fixed block 32 is fixedly connected to the flip block 22.

[0031] The flip motor 33 is started, and the output shaft of the flip motor 33 drives the flip shaft 31 to rotate. The first fixed block 32 on the flip shaft 31 drives the flip block 22 to rotate. The flip block 22 drives another flip block 22 and the flip shaft 31 to rotate through the connecting frame 21.

[0032] refer to Figure 2 , Figure 3 and 4The two flip blocks 22 are provided with a conveying mechanism 4 at one end close to each other. The conveying mechanism 4 includes a first conveyor belt 41 and a second transmission belt. The first conveyor belt 41 is located below the second conveyor belt 42. A rotating assembly 43 is provided on the flip block 22. The rotating assembly 43 includes a rotating roller 431 rotatably connected to the flip block 22. The first conveyor belt 41 and the second transmission belt are both sleeved on the rotating roller 431. One end of the rotating roller 431 is located in the cavity 221 of the flip block 22; the rotating roller 431 connected to the second conveyor belt 42 is keyed to a second gear 432, and the rotating roller 431 connected to the first conveyor belt 41 is keyed to a third gear 433; a rotating motor 434 is fixedly connected to the flip block 22. The rotating motor 434 is located in the cavity 221 and the output shaft is connected to the second gear 432.

[0033] The PCB board that needs to be flipped enters directly between the first conveyor belt 41 and the second conveyor belt 42 from the main body 11, and then the rotating motor 434 is started. The output group of the rotating motor 434 drives the second gear 432 to rotate, and the second gear 432 drives the third gear 433 to rotate, and the rotation direction of the third gear 433 is opposite to the rotation direction of the second gear 432; the second gear 432 and the third gear 433 both drive the rotating roller 431 to rotate, and the rotating roller 431 will drive the first conveyor belt 41 and the second conveyor belt 42 to rotate.

[0034] refer to Figure 2 , Figure 3 and 4 A third through hole connected to the cavity 221 is provided on the flip block 22, and the blocking mechanism 5 drives the assembly 52. ​​The driving assembly 52 includes a first connecting block 521 which is slidably connected in the third through hole, one end of the first connecting block 521 is located in the cavity 221 of the flip block 22 and the other end passes through the third through hole and is located outside the flip block 22; the first connecting block 521 is L-shaped, and a driving cylinder 522 is provided at one end of the first connecting block 521 away from the cavity 221, the cylinder body of the driving cylinder 522 is fixed on the first connecting block 521, and the piston rod of the driving cylinder 522 is connected to the blocking block 51.

[0035] refer to Figure 3 and Figure 4 An adjustment mechanism 6 is provided on the flip block 22, and the adjustment mechanism 6 includes a moving component 68 connected to the first connecting block 521. The moving component 68 includes a moving motor 681 fixedly connected to the first connecting block 521, and a fourth gear 682 is keyed to the output shaft of the moving motor 681; a second rack 683 meshing with the fourth gear 682 is fixedly connected to the flip block 22.

[0036] refer to Figure 3 and Figure 5, the flip block 22 is fixedly connected to the second connection block 61, and the second connection block 61 is provided with a slide groove 611 along its vertical direction, and two sliders 62 are slidably connected in the slide groove 611, and the two sliders 62 are rotatably connected with adjustment rollers 63, the adjustment block on one slider 62 is pressed against the first conveyor belt 41, and the adjustment roller 63 on the other slider 62 is pressed against the second conveyor belt 42; the second connection block 61 is rotatably connected with a bidirectional screw rod 64, the bidirectional screw rod 64 passes through the two sliders 62, and the two sliders 62 are respectively threadedly connected with two opposite thread segments on the bidirectional screw rod 64; one end of the bidirectional screw rod 64 is fixedly connected with an adjustment shaft 69, and the adjustment shaft 69 is keyed with a first gear 65. The first connection block 521 is fixedly connected with a first adjustment block 66, and the end of the first adjustment block 66 away from the first connection block 521 is integrally provided with a first rack 67 meshing with the first gear 65.

[0037] When the first conveyor belt 41 and the second conveyor belt 42 drive the PCB board to move to the appropriate position of the flip block 22, the mobile motor 681 is started first, and the output shaft of the mobile motor 681 drives the fourth gear 682 to rotate. Because the fourth gear 682 is meshed with the second rack 683, the first connecting block 521 will move on the flip block 22; the first connecting block 521 drives the first adjusting block 66 to move, the first adjusting block 66 drives the first rack 67 to move, the first rack 67 drives the first gear 65 to rotate, the first gear 65 drives the adjusting shaft 69 to rotate, the adjusting shaft 69 drives the bidirectional screw rod 64 to rotate, the bidirectional screw rod 64 drives the two sliders 62 to move in opposite directions, the adjusting rollers 63 on the two sliders 62 will move in opposite directions, and the adjusting rollers 63 on the two sliders 62 will tension the first conveyor belt 41 and the second conveyor belt 42, so that the first conveyor belt 41 and the second conveyor belt 42 can better press against the PCB board; and because the first connecting block 521 can change the position relative to the blocking block 51, the blocking block 51 can better block the PCB board.

[0038] refer to Figure 3 , Figure 4 and Figure 5A locking mechanism 7 is provided on the flip block 22, and the locking mechanism 7 includes a first locking block 71 fixedly connected to the first connecting block 521, and a first groove is provided at one end of the first locking block 71 away from the first connecting block 521, and a second adjusting block 72 is slidably connected in the first groove; a spring 74 is provided in the first groove, one end of the spring 74 is connected to the second adjusting block 72 and the other end is connected to the first locking block 71; a second locking block 73 is fixedly connected to one end of the second adjusting block 72 away from the first connecting block 521, and the vertical section of the second locking block 73 is the same as the vertical section of the first locking block 71, and a chamfer or a rounded corner is formed at one end of the second locking block 73 away from the second adjusting block 72; a first through hole 691 is provided on the adjustment shaft 69, and the second locking block 73 and one end of the first locking block 71 away from the first connecting block 521 can both pass through the first through hole 691.

[0039] When the PCB board between the first conveyor belt 41 and the second conveyor belt 42 stops moving close to the entrance 111 of the main body 11, the first connecting block 521 will move more in the direction close to the entrance 111 of the main body 11; when the first connecting block 521 moves and the first gear 65 and the first rack 67 are about to separate, the second locking block 73 will press against the side wall of the adjustment shaft 69, and the second adjustment block 72 will compress the spring 74; when the first gear 65 and the first rack 67 are separated, the first through hole 691 on the adjustment shaft 69 will align with the second locking block 73, and at this time the spring 74 will restore its elastic deformation, and under the action of the elastic force of the spring 74, the second locking block 73 will move away The first locking block 71 moves in the direction away from the first locking block 71 and enters the first through hole 691 of the adjustment shaft 69; the first connecting block 521 continues to move, so that the end of the first locking block 71 away from the first connecting block 521 and the second locking block 73 both pass through the first through hole 691 on the adjustment shaft 69. In this way, although the first connecting block 521 continues to move, because the end of the first locking block 71 away from the first connecting block 521 has passed through the first through hole 691, the first locking block 71 will limit the adjustment shaft 69 to prevent the adjustment shaft 69 from continuing to rotate, thereby preventing the bidirectional screw rod 64 from continuing to rotate, reducing the phenomenon of excessive tension of the first conveyor belt 41 and the second conveyor belt 42 by the adjustment roller 63. When the first connecting block 521 moves in a direction away from the second connecting block 61, so that the first locking block 71 is separated from the first through hole 691 on the adjustment shaft, the first gear 65 is not engaged with the first rack 67 before the first locking block 71 is separated from the first through hole 691 on the adjustment shaft 69. When the first gear 65 is engaged with the first rack 67, the first locking block 71 is separated from the first through hole 691 on the adjustment shaft 69, and the second locking block 73 is away from one end of the second adjustment block 72, i.e., the second locking block One end of 73 with a chamfer or fillet is located in the first through hole 691 of the adjustment shaft 69; when the first rack 67 drives the first gear 65 to rotate, the first gear 65 drives the adjustment shaft 69 to rotate, and the side wall of the first through hole 691 on the adjustment shaft 69 will squeeze the chamfer or fillet on the second locking block 73, so that the second locking block 73 moves toward the direction close to the first locking block 71, and the spring 74 will be compressed until the second locking block 73 is separated from the first through hole 691 on the adjustment shaft 69.

[0040] refer to Figure 1 , Figure 2 and 6 In order to reduce the entanglement of the air pipes on the driving cylinder 522 when the flip block 22 rotates, a tensioning mechanism 8 is provided on the main body 11.

[0041] A placement block 12 is fixed in the flip cavity of the main body 11, and a placement hole is opened on the placement block 12; a rotating block 13 is rotatably connected to the placement block 12, and the air pipe on the driving cylinder 522 is fixedly connected to the rotating block 13, and the end of the air pipe away from the driving cylinder 522 is located in the placement hole of the placement block 12.

[0042] The tensioning mechanism 8 includes a first rotating shaft 81 rotatably connected to the flip block 22. The flip block 22 is provided with a first adjusting assembly 83, which includes a fixed shaft 831 fixedly connected to the main body 11, the end of the fixed shaft 831 away from the main body 11 is located in the cavity 221 of the flip block 22, and the flip block 22 of the fixed shaft 831 can rotate relative to the fixed shaft 831; the fixed shaft 831 is provided with a fourth through hole for the flip shaft 31 to pass through, that is, the end of the flip shaft 31 away from the flip motor 33 passes through the fixed shaft 831 and is located in the cavity 221 of the flip block 22; the fixed shaft 831 located in the cavity 221 is keyed with a fifth gear 832; the third rotating shaft 833 is rotatably connected in the cavity 221 of the flip block 22, and the third rotating shaft 833 is keyed with a sixth gear 834 meshing with the fifth gear 832. The first bevel gear 835 is keyed to the third rotating shaft 833, and the fourth bevel gear 839 is keyed to the first rotating shaft 81; the fourth rotating shaft 836 is rotatably connected in the cavity 221 of the flip block 22, and the end of the fourth rotating shaft 836 close to the first rotating shaft 81 is keyed to the second bevel gear 837 meshing with the first bevel gear 835, and the end of the fourth rotating shaft 836 close to the first rotating shaft 81 is keyed to the third bevel gear 838 meshing with the fourth bevel gear 839.

[0043] When the flip shaft 31 drives the flip block 22 to rotate, because the position of the fifth gear 832 on the fixed shaft 831 is fixed, the sixth gear 834 on the third rotating shaft 833 will rotate around the fifth gear 832, so the sixth gear 834 will also rotate, and the rotating sixth gear 834 drives the third rotating shaft 833 to rotate, the third rotating shaft 833 drives the first bevel gear 835 to rotate, the first bevel gear 835 drives the second bevel gear 837 to rotate, the second bevel gear 837 drives the fourth rotating shaft 836 to rotate, the fourth rotating shaft 836 drives the third bevel gear 838 to rotate, the third bevel gear 838 drives the fourth bevel gear 839 to rotate, and the fourth bevel gear 839 will drive the first rotating shaft 81 to rotate.

[0044] refer to Figure 2 , Figure 6 and Figure 7, one end of the first rotating shaft 81 away from the fourth bevel gear 839 passes through the side wall of the flip block 22 and is located outside the flip block 22; the end of the first rotating shaft 81 away from the fourth bevel gear 839 is provided with a third connecting block 9, and the third connecting block 9 includes a first adjusting block 91 fixedly connected to the first rotating shaft 81, and the first adjusting block 91 is provided with a second groove along its length direction, and the second adjusting block 92 is slidably connected in the second groove, and the cross-sections of the first adjusting block 91, the second adjusting block 92 and the second groove are all rectangular. The end of the second adjusting block 92 away from the first rotating shaft 81 is rotatably connected to the second rotating shaft, and the second rotating shaft is fixedly connected with a tensioning block 82, and the tensioning block 82 is provided with an air supply pipe passing through a second through hole 821, and the air pipe can move relative to the tensioning block 82.

[0045] refer to Figure 2 , Figure 7 and Figure 8 A fifth through hole is provided on the first rotating shaft 81, and a second adjusting assembly 93 is provided on the flip block 22. The second adjusting assembly 93 includes a second fixed block 932 fixedly connected to the flip block 22, and the second fixed block 932 is located in the cavity 221 of the flip block 22. A fifth rotating shaft 931 is fixedly connected to the second fixed block 932, and one end of the fifth rotating shaft 931 passes through the fifth through hole on the first rotating shaft 81 and the side wall of the first adjusting block 91 and is located in the second groove of the first adjusting block 91; a seventh gear 933 is keyed to the fifth rotating shaft 931 located in the second groove. The sixth rotating shaft 934 is rotatably connected in the second groove of the first adjusting block 91, and the eighth gear 935 meshing with the seventh gear 933 is keyed on the sixth rotating shaft 934, and the fifth bevel gear 936 is also keyed on the sixth rotating shaft 934; an adjusting screw rod 937 is rotatably connected in the second groove of the first adjusting block 91, and a threaded hole matching the adjusting screw rod thread is provided on the second adjusting block 92; the sixth bevel gear 938 meshing with the fifth bevel gear 936 is keyed on the adjusting screw rod 937.

[0046] When the first rotating shaft 81 rotates, the first rotating shaft 81 drives the first adjusting block 91 to rotate. Because the fifth rotating shaft 931 and the seventh gear 933 are fixed, when the first adjusting block 91 rotates, the eighth gear 935 will rotate on its own. The rotating eighth gear 935 drives the sixth rotating shaft 934 to rotate. The sixth rotating shaft 934 drives the seventh bevel gear to rotate. The seventh bevel gear drives the eighth bevel gear to rotate. The eighth bevel gear drives the adjusting screw 937 to rotate. Because the adjusting screw 937 is threadedly matched with the threaded hole on the second adjusting block 72, the second adjusting block 92 will slide in the second groove of the first adjusting block 91.

[0047] The implementation principle of an automatic flipping structure of a PCB board in an embodiment of the present application is: when one side of the PCB board passes through the front conveying track and the entrance 111 of the main body 11 into the flipping chamber, it is assumed that the PCB board has completed single-sided patching in the previous process, that is, various electronic components such as chips, resistors, capacitors, inductors, etc. are mounted on the printed circuit board.

[0048] The two ends of the flip block 22 are named the first end and the second end, respectively. Initially, the first end of the flip block 22 is close to the inlet 111 of the main body 11, and the second end of the flip block 22 is close to the outlet 112 of the main body 11; and only a part of the second adjusting block 92 is located in the second groove of the first adjusting block 91, so that the third connecting block 9 formed by the first adjusting block 91 and the second adjusting block 92 is relatively long, and the second tensioning block 82 will tighten the air pipe between the driving cylinder 522 and the rotating block 13 to reduce the phenomenon of the air pipe being entangled.

[0049] When the PCB board enters the flip chamber, it will move between the first conveyor belt 41 and the second conveyor belt 42, and the first conveyor belt 41 and the second conveyor belt 42 will contact the PCB board; start the rotating motor 434 to make the first conveyor belt 41 and the second conveyor belt 42 move with the PCB board toward the second end of the flip block 22; when the PCB board moves to a certain position of the flip block 22, start the moving motor 681 to make the first connecting block 521 move toward the direction close to the PCB board, and make the blocking block 51 move to the vicinity of the PCB board, at which time the first conveyor belt 41 and the second conveyor belt 42 will press against the PCB board.

[0050] Then, the driving cylinder 522 is started, and the piston rod of the driving cylinder 522 drives the blocking block 51 to move, so that the blocking block 51 blocks the PCB board located between the first conveyor belt 41 and the second conveyor belt 42 .

[0051] Then, the flip motor 33 is started, so that the flip shaft 31 drives the flip block 22 to rotate 180 degrees clockwise, that is, the first end of the flip block 22 rotates from a position close to the inlet 111 to a position close to the outlet 112. Then, the moving motor 681 and the rotating motor 434 are started, so that the first conveyor belt 41 and the second conveyor belt 42 drive the PCB board to move from the first end of the flip frame 2 to the outlet 112 of the main body 11.

[0052] When the flip block 22 rotates, the first rotating shaft 81 drives the first adjusting block 91 to rotate toward the second end of the flip block 22, and the second adjusting block 92 will slide in the second groove of the first adjusting block 91, so that the overall length of the third connecting block 9 formed by the second adjusting block 92 and the third adjusting block becomes shorter; the second adjusting block 92 will drive the tensioning block 82 to move when driven by the cloud, so that the air pipes connected to the driving cylinder 522 and the air pipes connected to the rotating block 13 can be kept taut and will not be entangled, even if the air pipes are still loose, they will not be entangled. When the flip block 22 rotates, the rotating block 13 will rotate on the placement block 12.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A PCB board automatic turning structure, comprising a main body (11), a turning frame (2), a turning assembly (3) and a conveying mechanism (4), wherein the turning frame (2) is rotatably arranged on the main body (11) through the turning assembly (3), and the conveying mechanism (4) is arranged on the main body (11); characterized in that: It also comprises a blocking mechanism (5), the blocking mechanism (5) comprising a blocking block (51) and a driving assembly (52), the blocking block (51) being slidably arranged on the turning frame (2) via the driving assembly (52), and the blocking block (51) being capable of blocking a PCB board located in the conveying mechanism (4).

2. The automatic flipping structure of a PCB board according to claim 1, characterized in that: The turning frame (2) comprises a connecting frame (21) and a turning block (22), and the turning blocks (22) are arranged at both ends of the connecting frame (21); the turning assembly (3) is connected to the turning block (22); The conveying mechanism (4) is provided on each of the turning blocks (22); The conveying mechanism (4) comprises a first conveyor belt (41), a second conveyor belt (42) and a rotating assembly (43); the first conveyor belt (41) and the second conveyor belt (42) are both rotatably arranged on the turning block (22); The rotating assembly (43) is arranged on the turning block (22), and the first conveyor belt (41) and the second conveyor belt (42) are both connected to the rotating assembly (43).

3. The automatic flipping structure of a PCB board according to claim 2, characterized in that: The driving assembly (52) comprises a first connecting block (521) and a driving cylinder (522). The first connecting block (521) is arranged on the blocking block (51), the cylinder body of the driving cylinder (522) is arranged on the first connecting block (521), and the blocking block (51) is connected to the piston rod of the driving cylinder (522).

4. The automatic flipping structure of a PCB board according to claim 3 is characterized in that: The first connecting block (521) is slidably arranged on the flip block (22); The flip block (22) is provided with an adjustment mechanism (6), the adjustment mechanism (6) comprising a second connecting block (61), a slider (62), an adjustment roller (63), a bidirectional screw rod (64), a first gear (65), a first adjustment block (66), a first rack (67) and a moving assembly (68). The second connecting block (61) is arranged on the flip block (22); Two sliders (62) are provided, and both sliders (62) are slidably provided on the second connecting block (61); The adjustment roller (63) is arranged on the slider (62), and the adjustment rollers (63) on the two sliders (62) are respectively pressed against the first conveyor belt (41) and the second conveyor belt (42); The bidirectional screw rod (64) passes through the two sliders (62), and the two sliders (62) are respectively threadedly connected to two ends of the bidirectional screw rod (64); The first gear (65) is key-connected to the bidirectional screw rod (64); The first adjustment block (66) is arranged on the first connection block (521), and the first rack (67) is arranged on the first adjustment block (66) and meshes with the first gear (65); The moving component (68) is arranged on the tilting block (22) and is connected to the first connecting block (521).

5. The automatic flipping structure of a PCB board according to claim 4, characterized in that: The first rack (67) is arranged at an end of the first adjustment block (66) away from the first connection block (521); The flip block (22) is provided with a locking mechanism (7) connected to the bidirectional screw rod (64). The locking mechanism (7) comprises a first locking block (71), a second adjustment block (72), a second locking block (73) and a spring (74). The first locking block (71) is arranged on the first connecting block (521), and the bidirectional screw rod (64) is provided with a first through hole (691) for the first locking block (71) to pass through; The first locking block (71) is provided with a first groove, the second adjustment block (72) is slidably disposed in the first groove, the second locking block (73) is disposed on the second adjustment block (72), and the second locking block (73) can also pass through the first through hole (691); One end of the spring (74) is connected to the second adjustment block (72) and the other end is connected to the second adjustment block (72).

6. The automatic flipping structure of a PCB board according to claim 3, characterized in that: The flip assembly (3) comprises a flip shaft (31), a first fixed block (32) and a flip motor (33); two flip shafts (31) are provided, the two flip shafts (31) correspond to the two flip blocks (22), and one end of the flip shaft (31) is rotatably connected to the main body (11); The first fixing block (32) is arranged at an end of the flip shaft (31) away from the main body (11) and is connected to the flip block (22); The flip motor (33) is arranged on the main body (11) and is connected to one of the flip shafts (31).

7. The automatic flipping structure for a PCB board according to claim 6, characterized in that: The main body (11) is provided with a placement block (12), the placement block (12) is provided with a placement hole, and the air pipe of the driving cylinder (522) is located in the placement hole; the placement block (12) is rotatably connected to a rotating block (13), and the air pipe of the driving cylinder (522) is connected to the rotating block (13); The flip block (22) is provided with a tensioning mechanism (8), the tensioning mechanism (8) comprising a first rotating shaft (81), a third connecting block (9), a second rotating shaft, a tensioning block (82) and a first adjustment component (83). The first rotating shaft (81) is rotatably disposed on the turning block (22); The third connecting block (9) is arranged on the first rotating shaft (81); The second rotating shaft is rotatably arranged on the third connecting block (9); The tension block (82) is arranged on the second rotating shaft, and a second through hole (821) is formed on the tension block (82), and the air pipe of the driving cylinder (522) can pass through the second through hole (821); The first adjustment component (83) is arranged on the flip block (22), and the first rotating shaft (81) is connected to the first adjustment component (83).

8. The automatic flipping structure for a PCB board according to claim 7, characterized in that: The third connecting block (9) comprises a first adjusting block (91), a second adjusting block (92) and a second adjusting component (93). The first adjustment block (91) is connected to the first rotating shaft (81), and a second groove is formed on the first adjustment block (91); The second adjustment block (92) is slidably disposed in the second groove, and the second rotating shaft is rotatably disposed on the second adjustment block (92); The second adjustment component (93) is arranged on the flip block (22) and is connected to the second regulating block (92).

Images