Turnover PCBA circuit board fixing device

Abstract

The invention discloses a turnover PCBA circuit board fixing device, and relates to the field of circuit board processing, the turnover PCBA circuit board fixing device comprises a fixing mechanism, a turnover mechanism and a rotating mechanism, the fixing mechanism is used for placing a circuit board, and the turnover mechanism is used for driving the fixing mechanism to rotate around a rotating axis by a first angle so as to enable the circuit board to turn over by 180 degrees or rotate by a second angle so as to enable the circuit board to incline; the rotating mechanism comprises an annular rotating frame, and the annular rotating frame is connected with a second driving piece used for driving the annular rotating frame to rotate around the axis of the annular rotating frame. According to the turnover PCBA circuit board fixing device, through the arrangement of the fixing mechanism, the turnover structure and the rotating mechanism, a circuit board can be automatically adjusted to the required correct direction in the turnover process no matter which posture the circuit board is conveyed, so that the accuracy and the high efficiency in the machining process are guaranteed, multi-direction turnover of the circuit board is achieved, and the production efficiency is improved. And different process requirements are met, and the flexibility of circuit board processing is improved.

Description

Technical Field

[0001] The invention relates to a circuit board processing technology, and in particular to a flippable PCBA circuit board fixing device. Background Art

[0002] During the production and processing of PCBA circuit boards, flipping adjustment is a key link to ensure efficient and accurate processing. The multi-sided processing, component mounting and welding of circuit boards require flipping to put them in the appropriate position. The existing circuit boards can generally only be flipped in a fixed direction when flipped. For example, the Chinese invention patent with publication number CN114313925A discloses a printed circuit board conveying and flipping device and method, which only has the flipping ability in one direction when flipping the circuit board. However, there are usually four states when the circuit board is conveyed, such as Fig.11 As shown in the figure (the letters in the figure are only used to distinguish the states), the flipping in only one direction cannot meet all the flipping requirements of the circuit board, resulting in its poor applicability. Generally, the posture of the circuit board needs to be adjusted twice manually or by adding corresponding devices, which makes the processing efficiency low. Summary of the invention

[0003] The object of the present invention is to provide a flippable PCBA circuit board fixing device to solve the above-mentioned deficiencies in the prior art.

[0004] In order to achieve the above object, the present invention provides the following technical solution: a reversible PCBA circuit board fixing device, comprising:

[0005] A fixing mechanism, which is used to place the circuit board, the fixing mechanism is composed of two symmetrically arranged fixing frames, and a placement groove is opened on opposite sides of the fixing frames;

[0006] A flipping mechanism, which is used to drive the fixing mechanism to rotate a first angle around a rotation axis to flip the circuit board 180° or to rotate a second angle to tilt the circuit board, wherein the rotation axis is a line connecting the middle parts of the two fixing frames;

[0007] The rotating mechanism comprises an annular rotating frame, which is located around the fixed frame and is connected to a second driving member for driving it to rotate around its own axis. The plane where the annular rotating frame is located coincides with the plane where the fixed frame is located after the fixed mechanism rotates by a second angle.

[0008] Furthermore, the flipping mechanism includes a first rotating shaft installed on the side away from the two fixing frames, and one end of the first rotating shaft is connected to a first driving member for driving it to rotate around its own axis.

[0009] Furthermore, a locking member is provided between the first driving member and the first rotating shaft, and when the fixing mechanism is rotated to a second angle, the first rotating shaft can rotate along with the annular rotating frame and be connected to or disconnected from the first driving member.

[0010] Furthermore, the locking member includes two second rotating shafts, and the flipping mechanism also includes two brackets symmetrically arranged on both sides of the fixing mechanism. The second rotating shaft is rotatably installed on the bracket, and one end of the second rotating shaft is fixedly connected to a first locking block with a straight groove on one side, and one end of the first rotating shaft is fixedly connected to a second locking block, and one side of the second locking block has a straight groove protrusion and can cooperate with the groove of the first locking block.

[0011] Furthermore, the rotating mechanism further comprises two brackets, the two brackets are respectively fixedly mounted on opposite sides of the two brackets, one side of the bracket is provided with an inclined track, the bottom of the annular rotating frame is fixedly connected with an annular slide, the annular slide is slidably connected to the track, and the first rotating shaft is rotatably connected to the inner wall of the annular rotating frame;

[0012] The second driving member includes an annular gear plate, which is fixedly mounted on the top of the annular rotating frame. One side of the annular gear plate is meshed with a gear, and the middle of the gear is fixedly connected to a third rotating shaft, which is rotatably mounted on one of the brackets, and one end of the third rotating shaft is connected to a rotating member for driving its rotation.

[0013] Furthermore, a limiting member is provided between the fixed frame and the annular rotating frame. When the annular rotating member rotates, the limiting member is used to limit the fixed frame so that the plane where the fixed frame is located remains in an overlapping state with the plane where the annular rotating frame is located.

[0014] Furthermore, the limit member includes a limit pin installed on the fixed frame and a limit block arranged on the annular rotating frame. There are at least two limit pins and limit blocks, and they are respectively located at diagonal positions of the two fixed frames. The annular rotating frame is provided with a mounting groove, and the limit block is slidably installed in the mounting groove, and a first spring is arranged in the mounting groove. The elastic force of the first spring acts on the limit block so that the limit block has a tendency to move toward the inner side of the annular rotating frame. The limit block is provided with a limit groove that is compatible with the end of the limit pin.

[0015] Furthermore, the flippable PCBA circuit board fixing device also includes a material moving mechanism, which is used to move the circuit board so that the circuit board is moved out of the fixing mechanism. The material moving mechanism includes a material moving rod, a material blocking rod and a third driving member. The third driving member is used to drive the material moving rod and the material blocking rod to move closer to or away from each other. A material moving block is installed on the top of the material moving rod, and the material blocking block is rotatably connected to the material blocking rod.

[0016] The cam is an angular channel that is fixedly provided with a first end of a second cam and a second end of a second cam, and the cam is connected to the rotation of the cam and the second end of the second cam is connected to the rotation of the cam.

[0017] The surface of the second sleeve is slidably connected to one end of the material stopping rod, and the second sleeve is sleeved with a second spring at an end away from the first sleeve. The bottom of the material stopping block is connected to a ring body, and the top of the material stopping rod is fixedly connected to a rotating column. The ring body is rotatably connected to the rotating column, and a cylindrical cavity is opened in the ring body. A pin rod is slidably connected in the cylindrical cavity, and a third spring is installed in the cylindrical cavity. The elastic force of the third spring acts on the pin rod to make it have a tendency to move toward the inner side of the ring body. The rotating column has a first side surface with a gradually smaller diameter, and the rotating column is provided with two pin grooves matching the ends of the pin rod.

[0018] Furthermore, an extrusion piece is provided at the bottom of the material moving rod, and the extrusion piece includes an extrusion rod, a slip ring is fixedly connected to the surface of the extrusion rod, a sliding groove is provided at the bottom of the material moving rod, the slip ring is slidably connected to the sliding groove, one end of the extrusion rod abuts against the inner wall of the base, and the other end of the extrusion rod abuts against the inclined groove provided on the trapezoidal plate, and a fourth spring is installed in the sliding groove, and the elastic force of the fourth spring acts on the slip ring so that the slip ring has a tendency to move toward the direction of the inclined groove.

[0019] Compared with the prior art, the reversible PCBA circuit board fixing device provided by the present invention has the following beneficial effects:

[0020] The reversible PCBA circuit board fixing device, through the provided fixing mechanism, reversing structure and rotating mechanism, enables the circuit board to be automatically adjusted to the required correct direction during the reversing process regardless of the posture in which the circuit board is conveyed, thereby ensuring the accuracy and efficiency during the processing process, and realizing multi-directional reversal of the circuit board, adapting to different process requirements, and improving the flexibility of circuit board processing;

[0021] By setting up the annular rotating frame and its inclined posture, the circuit board can have the ability to selectively rotate during the flipping process, so that it can avoid the conveying devices that need to be connected on both sides, and when the circuit board is in a horizontal state, its upward side is not blocked by the annular rotating frame, so as to facilitate the processing of the circuit board, further improving the practicality and applicability of the flippable PCBA circuit board fixing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the structures of the flipping and fixing mechanism, the flipping mechanism and the rotating mechanism provided in the embodiment of the present invention;

[0025] Figure 3 The embodiment of the present invention provides Figure 2 The enlarged view of point A in the middle;

[0026] Figure 4 The embodiment of the present invention provides Figure 2 Schematic diagram of the separation state of the middle annular rotating frame;

[0027] Figure 5 The embodiment of the present invention provides Figure 4 The enlarged view of point B in the middle;

[0028] Figure 6 A schematic diagram of a first locking block and a second locking block in a locking member provided in an embodiment of the present invention in a separated state;

[0029] Figure 7 The embodiment of the present invention provides Figure 1 Schematic diagram of the local structure in longitudinal section;

[0030] Figure 8 A schematic diagram of a partial structure of a material transfer mechanism provided in an embodiment of the present invention;

[0031] Fig. 9 The embodiment of the present invention provides Figure 8 Enlarged view of point C in the middle;

[0032] Fig.10 The embodiment of the present invention provides Figure 8 The enlarged view of point D in the middle;

[0033] Fig.11 Four possible random states of a circuit board during transportation provided by an embodiment of the present invention (the dotted line represents the back side);

[0034] Fig.12 The embodiment of the present invention provides Fig.11 Schematic diagram of the flipping process in Figure b;

[0035] Fig.13 The embodiment of the present invention provides Fig.11 Schematic diagram of the flipping process in Figure d.

[0036] Description of reference numerals:

[0037] 1. Workbench; 11. Conveying device;

[0038] 2. Fixing mechanism; 21. Fixing frame;

[0039] 3. Flipping mechanism; 31. First rotating shaft; 32. First driving member;

[0040] 4. Rotating mechanism; 41. Annular rotating frame; 42. Second driving member; 421. Annular gear plate; 422. Gear; 423. Rotating member; 43. Bracket; 44. Track; 45. Annular slide;

[0041] 5. Locking member; 51. Second rotating shaft; 52. Bracket; 53. First locking block; 54. Second locking block;

[0042] 6. Limiting member; 61. Limiting pin; 62. Limiting block; 63. Mounting slot; 64. First spring; 65. Limiting slot;

[0043] 7. Material shifting mechanism; 71. Material shifting rod; 72. Material blocking rod; 73. Material shifting block; 74. Material blocking block;

[0044] 75, third driving member; 7501, base; 7502, bidirectional lead screw; 7503, first sleeve; 7504, second sleeve; 7505, trapezoidal plate; 7506, slot; 7507, ejector rod; 7508, first tension spring; 7509, second spring; 7510, ring body; 7511, rotating column; 7512, cylindrical cavity; 7513, pin rod; 7514, third spring; 7515, first side surface; 7516, pin groove;

[0045] 8. Extrusion piece; 81. Extrusion rod; 82. Slip ring; 83. Slide groove; 84. Inclined groove; 85. Fourth spring. DETAILED DESCRIPTION

[0046] In the process of PCBA circuit board production and processing, most of the flipping devices in the prior art can only provide flipping capabilities in a single direction, and can often only complete the flipping of the circuit board in a fixed direction. Such a design may be effective in some cases, but it often has obvious limitations in practical applications. During the transportation of the circuit board, due to factors such as the transportation path, posture, and position, the circuit board usually presents a variety of different posture states, such as Fig.11As shown, the existing flipping device can only handle flipping in a single direction and cannot make corresponding adjustments according to different states of the circuit board. During the production process, manual intervention or additional auxiliary devices are usually required for secondary attitude adjustment. This not only increases the complexity of production and labor costs but also may lead to errors caused by human factors, thereby reducing the stability, processing accuracy, and production efficiency of the production line. For this reason, a flipable PCBA circuit board fixing device is proposed to solve the above problems. To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0047] For the embodiments, please refer to Figure 1 - Fig.13 , a flipable PCBA circuit board fixing device, comprising:

[0048] A fixing mechanism 2 for placing the circuit board. The fixing mechanism 2 is composed of two symmetrically arranged fixing frames 21. A placing groove is provided on the opposite side of the fixing frames 21.

[0049] A flipping mechanism 3 for driving the fixing mechanism 2 to rotate a first angle around the rotation axis to flip the circuit board by 180° or rotate a second angle to tilt the circuit board, where the rotation axis is the connecting line in the middle of the two fixing frames 21.

[0050] A rotating mechanism 4, which includes an annular rotating frame 41. The annular rotating frame 41 is located on the periphery of the fixing frame 21, and the annular rotating frame 41 is connected with a second driving member 42 for driving it to rotate around its own axis. The plane where the annular rotating frame 41 is located coincides with the plane where the fixing frame 21 is located after the fixing mechanism 2 rotates the second angle.

[0051] As Figure 1 shown, the flipable PCBA circuit board fixing device is installed on the workbench 1. A conveying device 11 for inputting the circuit board and another conveying device 11 for outputting the circuit board are also provided on the workbench 1. The two conveying devices 11 are arranged on both sides of the flipable PCBA circuit board fixing device, and the planes for the circuit board to move are aligned. That is, when the two fixing frames 21 of the fixing mechanism 2 are in a horizontal state, the placing grooves on them are flush with the planes where the circuit boards conveyed by the conveying devices 11 on both sides are located, so as to facilitate the connection of the circuit board with the two conveying devices 11 during the conveying process. It should be noted that since the conveying device 11 is a prior art, only an exemplary illustration is made in the figure, and its specific structure and the way of conveying the circuit board are not specifically described here, and it will not cause trouble to this solution based on this field.

[0052] It should be noted that the size of the second angle is generally 10°-30°. Specifically, it is based on not affecting the connection between the conveying device 11 and the fixed frame 21 and not blocking the processing device for processing the circuit board arranged above the fixed frame 21. In this embodiment, exemplarily, the second angle is 20°.

[0053] In one embodiment of the present invention, the flip mechanism 3 includes a first rotating shaft 31 installed on the side away from the two fixing frames 21, and one end of the first rotating shaft 31 is connected to a first driving member 32 for driving it to rotate around its own axis;

[0054] In one embodiment of the present invention, a locking member 5 is provided between the first driving member 32 and the first rotating shaft 31. When the fixing mechanism 2 rotates to the second angle, the first rotating shaft 31 can rotate with the annular rotating frame 41 and connect or disconnect with the first driving member 32.

[0055] In one embodiment of the present invention, the locking member 5 includes two second rotating shafts 51, and the flip mechanism 3 also includes two brackets 52 symmetrically arranged on both sides of the fixing mechanism 2. The second rotating shaft 51 is rotatably mounted on the brackets 52, and one end of the second rotating shaft 51 is fixedly connected to a first locking block 53 with a straight groove on one side, and one end of the first rotating shaft 31 is fixedly connected to a second locking block 54, and one side of the second locking block 54 is a straight protrusion and can be matched with the groove of the first locking block 53;

[0056] In one embodiment of the present invention, the first driving member 32 is an electric motor, a pneumatic motor or a hydraulic motor, the output end of the electric motor, the output end of the hydraulic motor or the output end of the pneumatic motor is connected to one of the second rotating shafts 51, and the housing of the electric motor, the hydraulic motor or the pneumatic motor is mounted on the bracket 52;

[0057] The second rotating shaft 51 is driven to rotate by the first driving member 32 . When the first locking block 53 is plugged into the second locking block 54 , the rotation of the second rotating shaft 51 will drive the first rotating shaft 31 to rotate, thereby driving the fixing mechanism 2 to rotate.

[0058] In one embodiment of the present invention, the rotating mechanism 4 further includes two brackets 43, which are fixedly mounted on opposite sides of the two brackets 52, and an inclined track 44 is provided on one side of the bracket 43. An annular slide 45 is fixedly connected to the bottom of the annular rotating frame 41, and the annular slide 45 is slidably connected to the track 44. The first rotating shaft 31 is rotatably connected to the inner wall of the annular rotating frame 41.

[0059] The second driving member 42 includes an annular gear plate 421, which is fixedly mounted on the top of the annular rotating frame 41, one side of the annular gear plate 421 is meshedly connected with a gear 422, the middle of the gear 422 is fixedly connected with a third rotating shaft, the third rotating shaft is rotatably mounted on one of the brackets 52, and one end of the third rotating shaft is connected to a rotating member 423 for driving the third rotating shaft to rotate;

[0060] The rotating member 423 is an electric motor, a pneumatic motor or a hydraulic motor, and the output end of the electric motor, the output end of the hydraulic motor or the output end of the pneumatic motor is connected to the third rotating shaft.

[0061] The setting of the annular rotating frame 41 and its inclined posture can enable the circuit board to have the ability to selectively rotate or not rotate at the annular rotating frame 41, while allowing it to avoid the conveying devices 11 that need to be connected on both sides, and avoid the processing device (not shown in the figure) located above the fixing mechanism 2, so that when the circuit board is in a horizontal state, its upward side is not blocked by the annular rotating frame 41.

[0062] In one embodiment of the present invention, a limiting member 6 is provided between the fixed frame 21 and the annular rotating frame 41. When the annular rotating member 423 rotates, the limiting member 6 is used to limit the fixed frame 21 so that the plane where the fixed frame 21 is located is kept in a coincident state with the plane where the annular rotating frame 41 is located.

[0063] In one embodiment of the present invention, the limiting member 6 includes a limiting pin 61 installed on the fixed frame 21 and a limiting block 62 arranged on the annular rotating frame 41. At least two limiting pins 61 and limiting blocks 62 are provided, and they are respectively located at diagonal positions of the two fixed frames 21. A mounting groove 63 is provided on the annular rotating frame 41. The limiting block 62 is slidably installed in the mounting groove 63. A first spring 64 is provided in the mounting groove 63. The elastic force of the first spring 64 acts on the limiting block 62 so that the limiting block 62 has a tendency to move toward the inner side of the annular rotating frame 41. A limiting groove 65 adapted to the end of the limiting pin 61 is provided on the limiting block 62.

[0064] like Figure 2 and Figure 3 As shown, in order to ensure the stability of the fixed frame 21 and the annular rotating frame 41 in the overlapping state when the annular rotating member 423 rotates, in this embodiment, Figure 2FIG. 2 shows a method of setting four limit pins 61 and limit blocks 62, which are respectively located at the ends of the fixing frame 21. For a circuit board with a lighter weight, the number of limit pins 61 and limit blocks 62 can be reduced to reduce the difficulty of the limit member 6 when it acts. This is because when the limit pin 61 is clamped in the limit groove 65, it needs to overcome part of the elastic force of the first spring 64. The more the number of limit pins 61, the greater the stability of the limit between the fixing frame 21 and the annular rotating frame 41, but it also increases the difficulty of the limit member 6 and requires a certain amount of power input. Therefore, in actual use, it can be appropriately selected according to the weight of the circuit board to be processed. It should be understood that if Figure 3 As shown, the limiting pin 61 is detachably fixed to one side of the fixing frame 21 by bolts, and can be installed and removed according to the actual required quantity and position.

[0065] In one embodiment of the present invention, a use scenario of the reversible PCBA circuit board fixing device is provided, specifically:

[0066] The circuit board to be processed is transported to the placement slot of the fixing frame 21, and the circuit board is flipped and adjusted according to the required processing posture. There are usually four current postures of the circuit board, such as Fig.11 As shown, one of them should be the desired posture. When the posture of the circuit board is the same as the desired posture ( Fig.11 Figure a shows the current posture and the required posture, with the solid and dotted lines of A and B representing the front and back sides, so there is no need to flip the part and the processing can be done directly;

[0067] When the posture of the circuit board is different from the required posture, there are three cases: Fig.11 Figures b, c and d in the figure;

[0068] When the circuit board is in the posture shown in Figure b, the flip mechanism 3 rotates the second angle to tilt the circuit board and connect it to the rotating mechanism 4. Then the rotating mechanism 4 rotates to rotate the circuit board 180°, that is, the circuit board rotates in the plane where the annular rotating frame 41 is located. Finally, the flip mechanism 3 rotates the second angle to make the circuit board horizontal to complete the flipping. Fig.12 The flowchart shown;

[0069] When the posture is shown in Figure c, the flip mechanism 3 can be directly rotated to the first angle (180°);

[0070] When the posture is shown in Figure d, there are two ways to process it. Specifically, one is: first rotate the circuit board through the flip mechanism 3 to make it rotate the second angle, then rotate the circuit board 180° through the rotating mechanism 4, and finally continue to rotate the flip mechanism 3 until the circuit board is horizontal; the other is: first rotate the circuit board by the first angle and then continue to rotate the second angle to tilt the circuit board, then rotate the circuit board 180° through the rotating mechanism 4, and finally rotate the flip mechanism 3 back to the second angle; the above two methods are shown in FIG. Fig.13 The flowchart shown;

[0071] It should be noted that the posture recognition of the circuit board can be performed by a set recognition device before the conveying device is transported to the fixing frame 21. The recognition device is not drawn in the figure and it is a prior art, so it will not be described in detail here.

[0072] In one embodiment of the present invention, the reversible PCBA circuit board fixing device further includes a material moving mechanism 7, which is used to move the circuit board so that the circuit board is moved out of the fixing mechanism 2;

[0073] In one embodiment of the present invention, a specific example of a material moving mechanism 7 is provided. The material moving mechanism 7 is a general manipulator (not shown in the figure), which is arranged on one side of the rotating mechanism 4. When the circuit board is processed, the manipulator moves the circuit board to move it out of the fixing frame 21 of the fixing mechanism 2. Figure 1 and Figure 7 As shown, the removed circuit board will enter the next conveying device 11 for conveying;

[0074] In one embodiment of the present invention, another specific example of a material moving mechanism 7 is provided, the material moving mechanism 7 comprises a material moving rod 71, a material stopping rod 72 and a third driving member 75, the third driving member 75 is used to drive the material moving rod 71 and the material stopping rod 72 to move closer to or away from each other, a material moving block 73 is installed on the top of the material moving rod 71, and a material stopping block 74 is rotatably connected to the material stopping rod 72;

[0075] The third driving member 75 includes a base 7501 and a bidirectional lead screw 7502 rotatably mounted at both ends of the base 7501. The material moving rod 71 and the material blocking rod 72 are both slidably connected to the base 7501. The two ends of the bidirectional lead screw 7502 are respectively sleeved with a first sleeve 7503 and a second sleeve 7504. The surface of the first sleeve 7503 is slidably connected to one end of the material moving rod 71. A trapezoidal plate 7505 is fixedly mounted on the first sleeve 7503. The material moving rod 71 is provided with a slot 7506 for the trapezoidal plate 7505 to move. A push rod 7507 is slidably connected in the material moving rod 71. The lower end of the push rod 7507 is located in the slot 7506. The upper end of the push rod 7507 is fixedly connected to the material moving block 73. A first tension spring 7508 is installed between the material moving block 73 and the material moving rod 71. One end of the bidirectional lead screw 7502 is connected to a motor for driving it to rotate.

[0076] The surface of the second sleeve 7504 is slidably connected to one end of the material blocking rod 72, and a second spring 7509 is sleeved on the end of the second sleeve 7504 away from the first sleeve 7503. The bottom of the blocking block 74 is connected to a ring body 7510, and a rotating column 7511 is fixedly connected to the top of the blocking rod 72. The ring body 7510 is rotatably connected to the rotating column 7511, and a cylindrical cavity 7512 is provided in the ring body 7510. A pin rod 7513 is slidably connected in the cylindrical cavity 7512, and a third spring 7514 is installed in the cylindrical cavity 7512. The elastic force of the third spring 7514 acts on the pin rod 7513 to make it have a tendency to move toward the inside of the ring body 7510. The rotating column 7511 has a first side surface 7515 with a gradually smaller diameter, and the rotating column 7511 is provided with two pin grooves 7516 that match the ends of the pin rod 7513;

[0077] like Figure 8 and Fig.10 As shown, when the pin rod 7513 is located in the two pin grooves 7516, the stop block 74 will be located inside and outside the moving path of the circuit board respectively, and the ring body 7510 is located below the plane where the circuit board is in a horizontal state. When the stop block 74 is subjected to a large thrust, the pin rod 7513 will shrink and disengage from the pin groove 7516 by compressing the third spring 7514, and then the stop block 74 will rotate under the elastic force of the stop block 74 and the third spring 7514, and finally the pin rod 7513 will enter the other pin groove 7516. At this time, the stop block 74 will rotate to the outside of the moving path of the circuit board, so as not to hinder the movement of the circuit board. It should be noted that the resetting (restoring to the vertical state) of the stop block 74 can be achieved by setting a push block. When the material moving rod 71 and the material stopping rod 72 move away from each other to the initial position, the push block pushes the stop block 74 to rotate. The push block can be set at the edge of the conveying device 11 on one side thereof, or the push block can be installed and configured on the workbench 1 and placed on the moving path of the stop block 74. The setting method is conventional means, and the push block is not drawn in the figure.

[0078] In one embodiment of the present invention, an extrusion member 8 is provided at the bottom of the material moving rod 71, and the extrusion member 8 includes an extrusion rod 81, and a slip ring 82 is fixedly connected to the surface of the extrusion rod 81. A slide groove 83 is provided at the bottom of the material moving rod 71, and the slip ring 82 is slidably connected to the slide groove 83. One end of the extrusion rod 81 abuts against the inner wall of the base 7501, and the other end of the extrusion rod 81 abuts against the inclined groove 84 provided on the trapezoidal plate 7505. A fourth spring 85 is installed in the slide groove 83, and the elastic force of the fourth spring 85 acts on the slip ring 82, so that the slip ring 82 has a tendency to move toward the inclined groove 84.

[0079] When the first spring 7509 is pressed against the top of the support frame 7501, the first spring 7503 is pressed against the bottom of the support frame 7501, and the spring 7504 is pressed against the bottom of the support frame 7501, so that the support frame 71 is in a state of rotation and the rotation of the support frame 71 is stable.

[0080] When the material moving rod 71 and the material stopping rod 72 are both in contact with both sides of the circuit board, and they squeeze the two sides of the circuit board to a certain extent, the two-way screw screw 7502 stops rotating, and the circuit board is further fixed in the current position through a certain squeezing effect, to prevent the circuit board from moving in the fixing groove of the fixing frame 21 during processing of the circuit board, and after the processing is completed, the two-way screw screw 7502 is driven to rotate again to make the material moving rod 71 and the material stopping rod 72 closer to each other. At this time, the material stopping block 74 will rotate under the push of the circuit board, compressing the third spring 7514 during rotation, so that The pin rod 7513 disengages from the current pin slot 7516 and moves toward another pin slot 7516, eventually causing the stop block 74 to rotate to the bottom of the circuit board, thereby not hindering the movement of the circuit board. Then, as the material moving rod 71 continues to move, the material moving block 73 pushes the processed circuit board to move to the conveying device 11 on its side; after the currently processed circuit board is removed, the bidirectional lead screw 7502 rotates in the opposite direction, causing the material moving rod 71 and the material moving block 73 thereon and the material stop rod 72 and the material stop block 74 thereon to return to their initial positions to facilitate the next operation.

[0081] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the present invention.

Claims

1. A reversible PCBA circuit board fixing device, characterized in that: include: A fixing mechanism, which is used to place the circuit board, the fixing mechanism is composed of two symmetrically arranged fixing frames, and a placement groove is opened on opposite sides of the fixing frames; A flipping mechanism, which is used to drive the fixing mechanism to rotate a first angle around a rotation axis to flip the circuit board 180° or to rotate a second angle to tilt the circuit board, wherein the rotation axis is a line connecting the middle parts of the two fixing frames; The rotating mechanism comprises an annular rotating frame, which is located around the fixed frame and is connected to a second driving member for driving it to rotate around its own axis. The plane where the annular rotating frame is located coincides with the plane where the fixed frame is located after the fixed mechanism rotates by a second angle.

2. A reversible PCBA circuit board fixing device according to claim 1, characterized in that: The flip mechanism comprises a first rotating shaft installed on the side away from the two fixing frames, and one end of the first rotating shaft is connected to a first driving member for driving the first rotating shaft to rotate around its own axis.

3. A reversible PCBA circuit board fixing device according to claim 2, characterized in that: A locking member is provided between the first driving member and the first rotating shaft. When the fixing mechanism rotates to a second angle, the first rotating shaft can rotate along with the annular rotating frame and connect to or disconnect from the first driving member.

4. A reversible PCBA circuit board fixing device according to claim 3, characterized in that: The locking piece includes two second rotating shafts, and the flipping mechanism also includes two brackets symmetrically arranged on both sides of the fixing mechanism. The second rotating shaft is rotatably installed on the brackets, and one end of the second rotating shaft is fixedly connected to a first locking block with a straight groove on one side, and one end of the first rotating shaft is fixedly connected to a second locking block, and one side of the second locking block has a straight protrusion and can cooperate with the groove of the first locking block.

5. A reversible PCBA circuit board fixing device according to claim 4, characterized in that: The rotating mechanism further comprises two brackets, the two brackets are respectively fixedly mounted on opposite sides of the two brackets, one side of the bracket is provided with an inclined track, the bottom of the annular rotating frame is fixedly connected with an annular slide, the annular slide is slidably connected to the track, and the first rotating shaft is rotatably connected to the inner wall of the annular rotating frame; The second driving member includes an annular gear plate, which is fixedly mounted on the top of the annular rotating frame. One side of the annular gear plate is meshed with a gear, and the middle of the gear is fixedly connected to a third rotating shaft, which is rotatably mounted on one of the brackets, and one end of the third rotating shaft is connected to a rotating member for driving its rotation.

6. A reversible PCBA circuit board fixing device according to claim 5, characterized in that: A limiting member is arranged between the fixed frame and the annular rotating frame. When the annular rotating member rotates, the limiting member is used to limit the fixed frame so that the plane where the fixed frame is located keeps overlapping with the plane where the annular rotating frame is located.

7. A reversible PCBA circuit board fixing device according to claim 6, characterized in that: The limiting member includes a limiting pin installed on the fixed frame and a limiting block arranged on the annular rotating frame. There are at least two limiting pins and at least two limiting blocks, and they are respectively located at the diagonal positions of the two fixed frames. The annular rotating frame is provided with a mounting groove, and the limiting block is slidably installed in the mounting groove, and a first spring is arranged in the mounting groove. The elastic force of the first spring acts on the limiting block so that the limiting block has a tendency to move toward the inner side of the annular rotating frame. The limiting block is provided with a limiting groove adapted to the end of the limiting pin.

8. The reversible PCBA circuit board fixing device according to claim 7, characterized in that: It also includes a material moving mechanism, which is used to move the circuit board so that the circuit board is moved out of the fixing mechanism. The material moving mechanism includes a material moving rod, a material blocking rod and a third driving member. The third driving member is used to drive the material moving rod and the material blocking rod to move closer to or away from each other. A material moving block is installed on the top of the material moving rod, and the material blocking block is rotatably connected to the material blocking rod.

9. The reversible PCBA circuit board fixing device according to claim 8, characterized in that: The cam is provided with a first end for slidably connecting the first and second ends of the driving mechanism, and the second end for slidably connecting the first and second ends of the driving mechanism. The surface of the second sleeve is slidably connected to one end of the material stopping rod, and the second sleeve is sleeved with a second spring at an end away from the first sleeve. The bottom of the material stopping block is connected to a ring body, and the top of the material stopping rod is fixedly connected to a rotating column. The ring body is rotatably connected to the rotating column, and a cylindrical cavity is opened in the ring body. A pin rod is slidably connected in the cylindrical cavity, and a third spring is installed in the cylindrical cavity. The elastic force of the third spring acts on the pin rod to make it have a tendency to move toward the inner side of the ring body. The rotating column has a first side surface with a gradually smaller diameter, and the rotating column is provided with two pin grooves matching the ends of the pin rod.

10. The reversible PCBA circuit board fixing device according to claim 9, characterized in that: An extrusion piece is provided at the bottom of the material moving rod, and the extrusion piece includes an extrusion rod, a slip ring is fixedly connected to the surface of the extrusion rod, a sliding groove is provided at the bottom of the material moving rod, the slip ring is slidably connected to the sliding groove, one end of the extrusion rod abuts against the inner wall of the base, and the other end of the extrusion rod abuts against the inclined groove provided on the trapezoidal plate, a fourth spring is installed in the sliding groove, and the elastic force of the fourth spring acts on the slip ring so that the slip ring has a tendency to move toward the inclined groove direction.

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