High-stability board turning machine for processing circuit board

Abstract

This invention relates to the field of integrated circuit manufacturing technology, and more particularly to a high-stability flipping machine for circuit board processing. It includes a support frame, on which two symmetrically distributed rotating members are rotatably connected. The two rotating members are slidably connected to two rotating frames. A first spring is provided between each of the two rotating frames and the two rotating members. Two rows of first rotating shafts are rotatably connected to each rotating frame. First transport wheels are fixed to the first rotating shafts. Two sliding frames are slidably connected to the rotating frames. Second rotating shafts are rotatably connected to the sliding frames. Second transport wheels are fixed to the second rotating shafts. This invention uses a servo motor to continuously drive the two rotating frames to rotate 180°, thereby flipping the circuit board between the two rotating frames. Unlike existing devices, which require flipping and returning to the original position before the next flip, this improves the efficiency of circuit board flipping and ensures flipping stability.

Description

Technical Field

[0001] This invention relates to the field of integrated circuit manufacturing technology, and in particular to a high-stability flipping machine for circuit board processing. Background Technology

[0002] A circuit board, also known as a printed circuit board or PCB, is the skeleton and nervous system of electronic devices. It is a substrate used for mechanical support and electrical connection of electronic components. Simply put, it uses pre-designed copper lines (replacing messy wires) to connect various electronic components (such as chips, resistors, capacitors, etc.) to form a working circuit module. During the production of PCBs, double-sided processing is required, so a flipping machine is used to flip them.

[0003] Existing PCB flipping machines receive PCBs with one side already processed via the front-end equipment's discharge conveyor belt. Then, a servo motor or stepper motor drives the flipping arm to rotate the PCB 180°. After flipping it into position, the PCB is conveyed to the next station's (such as another pick-and-place machine) receiving conveyor belt for processing the other side. Afterward, the flipping arm needs to be flipped back to its original position to allow for the flipping of the next PCB. However, the PCB cannot be flipped during the flipping arm's return process, resulting in a long time required for existing PCB flipping machines to flip the PCBs, which affects production efficiency. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a high-stability flipping machine for circuit board processing.

[0005] The technical solution of the present invention is as follows: a high-stability flipping machine for circuit board processing, comprising a support frame, two symmetrically distributed rotating parts rotatably connected to the support frame, two rotating frames slidably connected to the two rotating parts, a first spring provided between each of the two rotating frames and the two rotating parts, a servo motor fixedly connected to the support frame, the output shaft of the servo motor fixedly connected to one of the rotating parts, two rows of first rotating shafts rotatably connected to the rotating frames, the first rotating shafts in the same row being driven by a pulley belt, a first transport wheel fixedly connected to each first rotating shaft, two sliding frames slidably connected to the rotating frames, a first tension spring provided between each sliding frame and an adjacent rotating frame, a second rotating shaft rotatably connected to each sliding frame, the second rotating shaft being driven by a pulley belt and a gear set to an adjacent first rotating shaft, and a second transport wheel fixedly connected to the second rotating shaft.

[0006] As a preferred embodiment of the present invention, the rotating frame is slidably connected to a blocking member, a second tension spring is provided between the blocking member and the adjacent rotating frame, and the blocking member is rotatably connected to a first roller.

[0007] As a preferred embodiment of the present invention, the rotating frame is slidably connected to an extrusion member, the extrusion member being used to extrude the adjacent blocking member, and a second spring being provided between the extrusion member and the adjacent rotating frame.

[0008] As a preferred embodiment of the present invention, the bracket is fixedly connected to a mounting frame, the mounting frame is rotatably connected to a pressing member, the pressing member is used to press the adjacent first roller, and a torsion spring is provided between the pressing member and the mounting frame.

[0009] As a preferred embodiment of the present invention, the mounting bracket is slidably connected to a limiting post, a third spring is provided between the limiting post and the mounting bracket, the pressing member is provided with a limiting groove, and the limiting post is inserted into the limiting groove on the adjacent pressing member for limiting.

[0010] As a preferred embodiment of the present invention, the bracket is fixedly connected to a fixing frame, which is used to squeeze the extrusion member, thereby separating the extrusion member from the adjacent blocking member.

[0011] As a preferred embodiment of the present invention, the bracket is fixedly connected to two pairs of extrusion plates, both pairs of extrusion plates are used to extrude two rotating frames, and the rotating frames are rotatably connected to two second rollers, the second rollers being used to reduce the friction between the rotating frames and the extrusion plates.

[0012] As a preferred embodiment of the present invention, the rotating member is fixedly connected to a centrally symmetrically distributed limiting rod, the sliding frame is fixedly connected to a transmission frame, the limiting rod is used to press the transmission frame, and the transmission frame is rotatably connected to a third roller, the third roller being used to reduce the friction between the limiting rod and the transmission frame.

[0013] As a preferred embodiment of the present invention, the sliding frame is provided with a friction material on the side adjacent to the first rotating shaft, which is used to brake the first rotating shaft.

[0014] As a preferred embodiment of the present invention, a damping mechanism is provided between the blocking member and the rotating frame to slow down the speed at which the second tension spring pulls the blocking member.

[0015] Beneficial effects: The present invention uses a servo motor to continuously drive two rotating frames to rotate 180°, thereby flipping the circuit board between the two rotating frames. Unlike existing devices, it does not require flipping and then returning to the original position before the next flipping of the circuit board can be performed, thus improving the efficiency of circuit board flipping and ensuring the stability of the flipping.

[0016] By using a blocking component to prevent the circuit board from falling between the two rotating frames during the flipping process, the circuit board is protected.

[0017] The rotating frame is moved by the pressure plate, which drives the first transport wheel to clamp the rotating circuit board, thereby reducing the shaking of the circuit board during the flipping process and protecting it. In addition, the sliding frame brakes the first rotating shaft during rotation to prevent the first transport wheel from continuing to rotate under inertia after the circuit board stops moving, which would cause wear on the circuit board. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the rotating component and rotating frame of the present invention;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a three-dimensional structural diagram of the blocking member and the extruding member of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the limiting rod and transmission frame of the present invention;

[0023] Figure 6 This is a three-dimensional sectional view of the pressing component of the present invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the extrusion component and the fixing frame of the present invention.

[0025] The components in the diagram are labeled as follows: 1-Bracket, 2-Rotating component, 3-Rotating frame, 301-First spring, 4-Servo motor, 5-First rotating shaft, 6-First transport wheel, 7-Sliding frame, 701-First tension spring, 8-Second rotating shaft, 9-Second transport wheel, 10-Blocking component, 1001-Second tension spring, 1002-First roller, 11-Extrusion component, 1101-Second spring, 12-Mounting frame, 13-Pressing component, 1301-Torsion spring, 14-Limiting post, 1401-Third spring, 15-Fixing frame, 16-Extrusion plate, 17-Second roller, 18-Limiting rod, 19-Transmission frame, 1901-Third roller. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection and application of the present invention.

[0027] Example 1: In the process of flipping circuit boards, the existing flipping machine needs to rotate its flipping component 180° and then return to its original position before it can continue to flip the next circuit board. This makes the flipping machine inefficient in flipping circuit boards and affects the production speed.

[0028] A high-stability flipping machine for circuit board processing, please refer to... Figures 1-5 The circuit board includes a support 1, with two symmetrically distributed rotating parts 2 rotatably connected to the upper side of the support 1. Each rotating part 2 consists of a disc and a rod. The discs of the two rotating parts 2 are slidably connected to two rotating frames 3, which are centrally symmetrical. A first spring 301 is provided between each of the two rotating frames 3 and the two rotating parts 2. The first spring 301 is always in a compressed state, thereby improving the stability of the rotating frame 3 and making it less prone to vibration during rotation. A servo motor 4 is fixedly connected to the support 1. The servo motor 4 can provide more stable angle control for the rotating parts 2, allowing for 180° rotation of the circuit board. The output shaft of the servo motor 4 is fixedly connected to the front rotating part 2. The rotating frame 3 is rotatably connected to two rows of first rotating shafts 5, each row containing three first rotating shafts 5. The first rotating shaft 5 is driven by a pulley and belt. The first rotating shaft 5 is fixedly connected to a first transport wheel 6, which is used to transport the circuit board. The outer layer of the first transport wheel 6 is made of soft material to protect the circuit board. The rotating frame 3 is slidably connected to two sliding frames 7. A first tension spring 701 is provided between the sliding frame 7 and the adjacent rotating frame 3. The sliding frame 7 is rotatably connected to a second rotating shaft 8. The second rotating shaft 8 is driven by a pulley, belt and gear set to the adjacent first rotating shaft 5. The second rotating shaft 8 is fixedly connected to a second transport wheel 9. The second transport wheel 9 contacts the discharge conveyor belt, causing the discharge conveyor belt to drive the second transport wheel 9 to rotate. The second transport wheel 9 drives the second rotating shaft 8 to rotate. The transmission direction is changed by the pulley, belt and gear set, so that the rotation direction of the first transport wheel 6 is consistent with the direction of the discharge conveyor belt.

[0029] Please refer to Figure 4 , Figure 5 and Figure 7 The rotating frame 3 is slidably connected to two blocking members 10. Each blocking member 10 consists of a circular plate, a square rod, and a round rod. A second tension spring 1001 is provided between the blocking member 10 and the adjacent rotating frame 3. The second tension spring 1001 on the right is in a stretched state, while the second tension spring 1001 on the left is in a normal state. The blocking member 10 is rotatably connected to a first roller 1002.

[0030] Please refer to Figure 4 and Figure 7The rotating frame 3 is slidably connected with two front and rear extrusion members 11. Each extrusion member 11 consists of two rectangular plates and a rectangular rod. The extrusion member 11 is used to extrude adjacent blocking members 10, so that the blocking members 10 cannot be pulled by the second tension spring 1001. A second spring 1101 is provided between the extrusion member 11 and the adjacent rotating frame 3. The second spring 1101 is always in a compressed state, thereby providing pressure on the blocking members 10 by the extrusion member 11.

[0031] Please refer to Figure 1 , Figure 5 and Figure 6 Two mounting brackets 12 are fixedly connected to the right side of the bracket 1. The mounting bracket 12 is rotatably connected to a pressing member 13. The pressing member 13 is initially in a horizontal state under the limitation of the mounting bracket 12. The pressing member 13 is used to press the adjacent first roller 1002. A torsion spring 1301 is provided between the pressing member 13 and the mounting bracket 12.

[0032] Please refer to Figure 6 The mounting bracket 12 is slidably connected to the limiting post 14, which consists of a hemisphere and a cylinder. A third spring 1401 is provided between the limiting post 14 and the mounting bracket 12. The third spring 1401 is always in a compressed state, thereby providing pressure on the first roller 1002 to the pressing member 13, causing the blocking member 10 to move and stretching the second tension spring 1001. The pressing member 13 is provided with a limiting groove, the depth of which is less than the radius of the hemisphere of the limiting post 14. The limiting post 14 is inserted into the limiting groove on the adjacent pressing member 13 for limiting.

[0033] Please refer to Figure 1 and Figure 6 Two fixed brackets 15 are fixedly connected to the left side of the bracket 1. The fixed brackets 15 are used to squeeze the extruded part 11, so that the extruded part 11 is separated from the adjacent blocking part 10, and the blocking part 10 can move under the action of the second tension spring 1001. A damping is provided between the blocking part 10 and the rotating frame 3 to slow down the speed at which the second tension spring 1001 pulls the blocking part 10, thereby preventing the blocking part 10 from blocking the circuit board after the flipping is completed from moving towards the receiving conveyor belt.

[0034] When using this device to flip circuit boards, install it between two conveyor belts so that the second transport wheel 9 on the right side can contact the discharge conveyor belt. The discharge conveyor belt drives the second transport wheel 9 on the right side to rotate through friction. The second transport wheel 9 drives the adjacent first rotating shaft 5 to rotate through the pulley belt and gear set. The first rotating shaft 5 drives the adjacent first transport wheel 6 to rotate, and drives the remaining first rotating shafts 5 in the same row to rotate through the pulley belt. At this time, the rotation direction of the first transport wheel 6 is the same as the rotation direction of the conveyor belt, so that the circuit board can move from the discharge end to the first transport wheel 6. After the circuit board is separated from the discharge conveyor belt, the circuit board moves to the first transport wheel 6 on the lower rotating frame 3. The servo motor 4 starts, and the output shaft of the servo motor 4 drives the front rotating part 2 to rotate counterclockwise. The rotating component 2 drives the two rotating frames 3 to rotate, and the rotating frames 3 drive the blocking component 10 to rotate. The blocking component 10 on the right side squeezes the pressing component 13. The pressing component 13 rotates and causes the torsion spring 1301 to store force. At the same time, the pressing component 13 squeezes the limiting post 14. The limiting post 14 moves downward and compresses the third spring 1401. Then the rotating frame 3 and the blocking component 10 will pass over the pressing component 13. The pressing component 13 resets under the action of the torsion spring 1301. At the same time, the limiting post 14 resets under the action of the third spring 1401. During the rotation of the rotating frame 3, the pressing component 11 on the left side separates from the fixed frame 15. The pressing component 11 clamps the adjacent blocking component 10 under the action of the second spring 1101, so that the blocking component 10 will not slide during the rotation, thereby blocking the circuit board and preventing the circuit board from falling.

[0035] After the two rotating frames 3 rotate 180°, the second transport wheel 9 on the lower rotating frame 3 contacts the discharge conveyor belt, driving the first transport wheel 6 to rotate, thereby transporting the circuit board to the receiving conveyor belt. Before the rotating frame 3 rotates 180°, the original right-side extrusion member 11 contacts the fixed frame 15. The extrusion member 11 is squeezed by the fixed frame 15 and separates from the adjacent blocking member 10. The blocking member 10 moves downward under the action of the second tension spring 1001 until the first roller 1002 contacts the moving circuit board. When the circuit board separates from the first roller 1002, the blocking member 10 continues to move until it stops. During this process, the original left-side blocking member 10 is blocked and stops moving by the pressing member 13, thereby moving relative to the rotating frame 3 and stretching the second tension spring 1001 until the rotating frame 3 completes the 180° rotation. At this time, the blocking member 10 moves to the limit position. The above process is repeated to continuously flip the circuit board.

[0036] Example 2: Based on Example 1, please refer to... Figure 2 and Figure 3The bracket 1 is fixedly connected to two pairs of extrusion plates 16. The extrusion plates 16 are arc-shaped plates, and the two ends of the inner side of the extrusion plates 16 are provided with inclined surfaces. Both pairs of extrusion plates 16 are used to extrude two rotating frames 3. The rotating frames 3 are rotatably connected to two second rollers 17. The second rollers 17 are used to reduce the friction between the rotating frames 3 and the extrusion plates 16. When the rotating component 2 drives the rotating frames 3 to rotate, the second rollers 17 are extruded by the adjacent extrusion plates 16, which drives the rotating frames 3 to move. The two rotating frames 3 drive four rows of first transport wheels 6 to clamp the circuit board, thereby reducing the shaking generated by the circuit board during the flipping process.

[0037] Please refer to Figure 2 , Figure 3 and Figure 5 The rotating component 2 is fixedly connected to two centrally symmetrically distributed limiting rods 18. The sliding frame 7 is fixedly connected to a transmission frame 19. The limiting rods 18 are used to squeeze the transmission frame 19, thereby driving the second transport wheel 9 to contact the discharge conveyor belt. The first tension spring 701 is initially in a stretched state. When the rotating frame 3 moves, the rotating frame 3 drives the sliding frame 7 to move, the sliding frame 7 drives the transmission frame 19 to move, and the transmission frame 19 moves relative to the limiting rods 18. Under the pull of the adjacent first tension springs 701, the sliding frame 7 drives the second transport wheel 9 to separate from the discharge conveyor belt. The transmission frame 19 is rotatably connected to a third roller 1901. The third roller 1901 is used to reduce the friction between the limiting rods 18 and the transmission frame 19. The rotating frame 3 is provided with a tensioning element to maintain the tension of the belt used for transmission between the second rotating shaft 8 and the first rotating shaft 5. Friction material is provided on the side of the sliding frame 7 near the adjacent first rotating shaft 5 to brake the first rotating shaft 5. When the sliding frame 7 drives the second transport wheel 9 to separate from the discharge conveyor belt, the sliding frame 7 brakes the first rotating shaft 5, thereby preventing the first transport wheel 6 from continuing to rotate under inertia after the circuit board stops moving, which would cause wear on the circuit board.

[0038] When the rotating component 2 drives the rotating frame 3 to rotate, the rotating frame 3 drives the second roller 17 to rotate. The second roller 17 is squeezed by the adjacent pressing plate 16 and moves, thereby causing the two rotating frames 3 to move towards each other and compress the adjacent first spring 301. The rotating frame 3 drives the first rotating shaft 5 to move, and the first rotating shaft 5 drives the first transport wheel 6 to move, thereby causing the first transport wheel 6 to clamp the circuit board, reducing the shaking generated during the circuit board flipping process, thus reducing the damage to the circuit board during the flipping process. After the rotating frame 3 has finished rotating, the rotating frame 3 gradually returns to its original position under the action of the adjacent first spring 301.

[0039] When the rotating frame 3 moves, it drives the adjacent sliding frame 7 to move. Taking the right sliding frame 7 as an example, the sliding frame 7 drives the transmission frame 19 to move upward. The transmission frame 19 moves relative to the limiting rod 18. The sliding frame 7 moves to the left under the action of the first tension spring 701. At the same time, the second transport wheel 9 separates from the discharge conveyor belt. After the sliding frame 7 moves, it brakes the adjacent first rotating shaft 5, thereby preventing the first transport wheel 6 from continuing to rotate under inertia and causing wear on the circuit board after the circuit board stops moving. When the rotating frame 3 rotates 180°, the rotating frame 3 is located on the upper side. The rotating frame 3 drives the sliding frame 7 to move upward. The third roller 1901 is squeezed to the left by the limiting rod 18. The transmission frame 19 drives the sliding frame 7 to move to the left and stretches the first tension spring 701. The sliding frame 7 releases the brake on the first rotating shaft 5. At this time, the second transport wheel 9 located on the lower rotating frame 3 contacts the discharge conveyor belt, thereby allowing the first transport wheel 6 to transport the circuit board to the receiving conveyor belt.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-stability flipping machine for circuit board processing, comprising a support (1), wherein the support (1) is rotatably connected to two symmetrically distributed rotating parts (2), characterized in that, Two rotating parts (2) are slidably connected to two rotating frames (3). A first spring (301) is provided between each of the two rotating frames (3) and the two rotating parts (2). A servo motor (4) is fixedly connected to the bracket (1). The output shaft of the servo motor (4) is fixedly connected to one of the rotating parts (2). The rotating frame (3) is rotatably connected to two rows of first rotating shafts (5). The first rotating shafts (5) in the same row are driven by a pulley belt. A first transport wheel (6) is fixedly connected to the first rotating shaft (5). The rotating frame (3) is slidably connected to two sliding frames (7). A first tension spring (701) is provided between the sliding frame (7) and the adjacent rotating frame (3). The sliding frame (7) is rotatably connected to a second rotating shaft (8). The second rotating shaft (8) is driven by a pulley belt and a gear set between the second rotating shaft (5) and the adjacent first rotating shaft (5). A second transport wheel (9) is fixedly connected to the second rotating shaft (8). The rotating frame (3) is slidably connected to a blocking member (10), and a second tension spring (1001) is provided between the blocking member (10) and the adjacent rotating frame (3). The blocking member (10) is rotatably connected to a first roller (1002). The rotating frame (3) is slidably connected to an extrusion member (11), which is used to extrude the adjacent blocking member (10). A second spring (1101) is provided between the extrusion member (11) and the adjacent rotating frame (3). The bracket (1) is fixedly connected to the mounting frame (12), the mounting frame (12) is rotatably connected to the pressing member (13), the pressing member (13) is used to press the adjacent first roller (1002), and a torsion spring (1301) is provided between the pressing member (13) and the mounting frame (12). The mounting bracket (12) is slidably connected to a limiting post (14), and a third spring (1401) is provided between the limiting post (14) and the mounting bracket (12). The pressing member (13) is provided with a limiting groove, and the limiting post (14) is inserted into the limiting groove on the adjacent pressing member (13) for limiting. The bracket (1) is fixedly connected to a fixing frame (15), which is used to squeeze the extrusion member (11) to separate the extrusion member (11) from the adjacent blocking member (10).

2. The high-stability flipping machine for circuit board processing according to claim 1, characterized in that, The bracket (1) is fixedly connected to two pairs of extrusion plates (16), both pairs of extrusion plates (16) are used to extrude the two rotating frames (3), and the rotating frames (3) are rotatably connected to two second rollers (17), the second rollers (17) are used to reduce the friction between the rotating frames (3) and the extrusion plates (16).

3. A high-stability flipping machine for circuit board processing according to claim 2, characterized in that, The rotating component (2) is fixedly connected to a centrally symmetrically distributed limiting rod (18), and the sliding frame (7) is fixedly connected to a transmission frame (19). The limiting rod (18) is used to press the transmission frame (19). The transmission frame (19) is rotatably connected to a third roller (1901). The third roller (1901) is used to reduce the friction between the limiting rod (18) and the transmission frame (19).

4. A high-stability flipping machine for circuit board processing according to claim 3, characterized in that, The sliding frame (7) is provided with friction material on the side near the adjacent first rotating shaft (5) for the sliding frame (7) to brake the first rotating shaft (5).

5. A high-stability flipping machine for circuit board processing according to claim 4, characterized in that, A damping mechanism is provided between the blocking member (10) and the rotating frame (3) to slow down the speed at which the second tension spring (1001) pulls the blocking member (10) to move.

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