Feeding device for PCB processing

Abstract

The utility model relates to the technical field of electronic manufacturing equipment, in particular to a feeding device for PCB (printed circuit board) processing, which comprises a mechanical arm, a first connecting plate connected to the bottom of the mechanical arm, second connecting plates connected to two ends of the bottom of the first connecting plate in a sliding manner, and a rotating plate, a plurality of sliding rails are connected to the sides, away from each other, of the two second connecting plates, a rotating shaft is rotationally connected into the fixed plate, one end of the rotating plate is connected to the rotating shaft, the rotating plate is rotationally connected with the fixed plate, a second sleeve is connected to the other end of the rotating plate, a moving plate is slidably connected to the sliding rails, and the moving plate is in extrusion fit with the rotating plate. Through a hinge structure of the movable plates and the torsional springs, the movable plates can adaptively deflect around the axis of the mounting plate when making contact with the PCB, and when the PCB is in a circular or irregular profile, the multiple movable plates sequentially adjust the angle according to the contact time difference and are matched with elastic deformation of the protection pads to achieve dynamic attachment to the surface of the special-shaped plate.

Description

Technical Field

[0001] This utility model relates to the field of electronic manufacturing equipment technology, and in particular to a feeding device for PCB board processing. Background Technology

[0002] Printed circuit boards (PCBs) are the core carriers of electronic devices, and their surfaces require precision machining to form conductive patterns and component mounting structures. In automated production processes, PCBs need to be positioned and transferred between multiple processes. Traditional manual handling can no longer meet the demands of modern manufacturing for positioning accuracy and processing efficiency, necessitating specialized automated transfer equipment to achieve precise and damage-free board transfer.

[0003] Currently, the industry commonly uses a transfer solution combining robotic arms and clamping mechanisms. A typical structure includes two sets of symmetrically arranged L-shaped bending plates. During operation, the bending plates move synchronously along the guide rail towards the PCB's central axis, supporting the board through the bottom lifting surface, and then achieving bidirectional fixation using the lateral clamping surfaces. However, current transfer equipment exhibits significant shortcomings when dealing with irregularly shaped PCBs: First, circular boards lack angular features, making traditional four-corner clamping methods ineffective in providing restraint, easily leading to clamping instability and board displacement or slippage; second, the contact area between the existing lifting mechanism and the circular contour is less than 30%, easily causing localized stress concentration, posing a risk of damage to pads and microvia structures. Furthermore, a single-structure clamping mechanism is difficult to accommodate curved boards with different curvatures, forcing frequent tooling changes on production lines and severely restricting the demand for flexible production. Utility Model Content

[0004] To overcome the shortcomings of clamping instability and poor structural compatibility, this utility model provides a stable feeding device with good compatibility for PCB board processing.

[0005] A PCB board feeding device includes a robotic arm with a first connecting plate connected to its bottom. Second connecting plates are slidably connected to both ends of the bottom of the first connecting plate. The device also includes a rotating plate. Several fixed plates are connected to the bottom of the second connecting plates. Several slide rails are connected to the sides of the two second connecting plates that are separated from each other. A rotating shaft is rotatably connected within each fixed plate, and a stabilizing component for stabilizing the rotating shaft is provided within the fixed plate. One end of the rotating plate is connected to the rotating shaft and is rotatably connected to the fixed plate. A second sleeve is connected to the other end of the rotating plate. The second sleeve is provided with an extension component for clamping the PCB board. A movable plate is slidably connected to the slide rails, and the movable plate is in a pressing fit with the rotating plate.

[0006] Furthermore, the stabilizing component includes a locking block, a first sleeve is connected inside the fixing plate, one end of the locking block is slidably connected to the first sleeve, and the other end is connected to a triangular block. The rotating shaft is provided with a groove, and the triangular block of the locking block is matched with the groove of the rotating shaft. A first spring is provided inside the first sleeve, one end of the first spring is connected to the first sleeve, and the other end of the first spring is connected to the locking block.

[0007] Furthermore, the extension component includes a contact block slidably connected within the second sleeve. A second spring is disposed within the second sleeve, with one end of the second spring connected to the second sleeve and the other end connected to the contact block. One end of the contact block extending out of the second sleeve is connected to a mounting plate. A movable plate is rotatably connected to the mounting plate. Torsion springs are sleeved on both ends of the shaft connecting the movable plate and the mounting plate, with one end of the torsion spring connected to the mounting plate and the other end connected to the movable plate.

[0008] Furthermore, a protective pad is connected to the side of the movable plate that contacts the PCB board.

[0009] Furthermore, a roller is rotatably connected to one end of the moving plate that is pressed against the rotating plate.

[0010] Furthermore, a push block is connected to the upper part of the movable plate on the side opposite to the fixed plate.

[0011] Furthermore, a magnet is connected to the top of the slide rail, and the moving plate is made of magnetic metal.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. Through the hinge structure of the movable plate and the torsion spring, the movable plate can adaptively deflect around the axis of the mounting plate when it contacts the PCB board. When the PCB board is circular or has an irregular contour, multiple movable plates adjust their angles sequentially according to the contact time difference. Combined with the elastic deformation of the protective pad, dynamic bonding with the surface of the irregular board is achieved.

[0014] 2. Through the sliding linkage mechanism between the rotating plate and the moving plate, the operator drives the moving plate to move down along the slide rail by pulling down the push block, so as to flexibly configure the number and position of the clamping units. Different sizes can be adapted without changing the tooling, which significantly improves the flexibility of the production line. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the installation structure of the second connecting plate and the fixing plate of this utility model.

[0017] Figure 3 This is a cross-sectional view showing the connection relationship between the first sleeve and the first spring of this utility model.

[0018] Figure 4 This is a schematic diagram showing the connection relationship between the mounting plate and the movable plate of this utility model.

[0019] In the above attached diagram: 1: robotic arm, 2: first connecting plate, 3: second connecting plate, 4: fixed plate, 5: first sleeve, 51: first spring, 6: locking block, 7: rotating shaft, 8: rotating plate, 9: slide rail, 10: moving plate, 11: second sleeve, 12: contact block, 13: second spring, 14: mounting plate, 15: movable plate, 16: torsion spring, 17: protective pad, 18: roller, 19: push block, 20: magnet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: A feeding device for PCB board processing, such as Figures 1-3 As shown, the system includes a robotic arm 1, a first connecting plate 2, and a second connecting plate 3. The bottom of the robotic arm 1 is connected to the first connecting plate 2, and both ends of the bottom of the first connecting plate 2 are slidably connected to the second connecting plates 3. After the robotic arm 1 is started, it drives the first connecting plate 2 to move horizontally along a preset path, causing the second connecting plates 3 on both sides to move synchronously closer to the sides of the PCB board. When the two second connecting plates 3 reach the predetermined positions, the robotic arm 1 stops moving, ensuring that the second connecting plates 3 remain parallel and aligned with the sides of the PCB board. It also includes a fixed plate 4, a stabilizing component, a rotating shaft 7, a rotating plate 8, a slide rail 9, a movable plate 10, a second sleeve 11, and an extension component. Several fixed plates 4 are connected to the bottom of the second connecting plate 3. Several slide rails 9 are connected to the side of the two second connecting plates 3 that are separated. The rotating shaft 7 is rotatably connected inside the fixed plate 4. A stabilizing component for stabilizing the rotating shaft 7 is provided inside the fixed plate 4. One end of the rotating plate 8 is connected to the rotating shaft 7, and the rotating plate 8 is rotatably connected to the fixed plate 4. The other end of the rotating plate 8 is connected to the second sleeve 11. The second sleeve 11 is provided with an extension component for clamping the PCB board. The movable plate 10 is slidably connected to the slide rail 9. The movable plate 10 and the rotating plate 8 are pressed together. During the downward movement of the movable plate 10, it pushes the rotating plate 8 to rotate outward around the rotating shaft 7 until the rotating plate 8 is fully unfolded to a horizontal state.

[0022] like Figure 3As shown, the stabilizing component includes a first sleeve 5, a first spring 51, and a locking block 6. The first sleeve 5 is connected inside the fixing plate 4. One end of the locking block 6 is slidably connected inside the first sleeve 5, and the other end is connected to a triangular block. The rotating shaft 7 is provided with a groove, and the grooves of the rotating shaft 7 are all rounded. The triangular block of the locking block 6 is also rounded. The triangular block of the locking block 6 is in a limiting fit with the groove of the rotating shaft 7. The first spring 51 is provided inside the first sleeve 5. One end of the first spring 51 is connected inside the first sleeve 5, and the other end of the first spring 51 is connected to the locking block 6.

[0023] like Figures 2-4 As shown, the extension assembly includes a contact block 12, a second spring 13, a mounting plate 14, a movable plate 15, and a torsion spring 16. The contact block 12 is slidably connected inside the second sleeve 11. The second spring 13 is provided inside the second sleeve 11. One end of the second spring 13 is connected to the second sleeve 11, and the other end is connected to the contact block 12. One end of the contact block 12 extending out of the second sleeve 11 is connected to the mounting plate 14. The mounting plate 14 is rotatably connected to the movable plate 15. Both ends of the shaft connecting the movable plate 15 and the mounting plate 14 are fitted with torsion springs 16. One end of the torsion spring 16 is connected to the mounting plate 14, and the other end is connected to the movable plate 15.

[0024] like Figure 4 As shown, it also includes a protective pad 17. The working surface of each movable plate 15, that is, the side in contact with the PCB board, is covered with a silicone protective pad 17.

[0025] like Figure 3 As shown, it also includes a roller 18, and the roller 18 is rotatably connected to one end of the movable plate 10 that is pressed against the rotating plate 8.

[0026] like Figure 2 As shown, it also includes a push block 19. The push block 19 is connected to the side of the upper part of the movable plate 10 away from the fixed plate 4. The push block 19 is provided with an anti-slip groove.

[0027] like Figure 3 As shown, it also includes a magnet 20, the top of the slide rail 9 is connected to the magnet 20, and the moving plate 10 is made of magnetic metal.

[0028] The robotic arm 1 drives the first connecting plate 2 and the second connecting plate 3 to move, and positions the two second connecting plates 3 on both sides of the PCB board. Then, according to the size of the PCB board, the appropriate number and position of the rotating plates 8 are selected. That is, the operator pinches the push block 19 and pulls it down, so that the moving plate 10 slides down along the slide rail 9. During the descent of the moving plate 10, it pushes the rotating plate 8 and the rotating shaft 7 to rotate, thereby putting down the rotating plate 8 to be used, clamping and transporting the PCB board. While the rotating shaft 7 is rotating, it slides with the clamping block 6. When the clamping block 6 disengages from the groove of the rotating shaft 7, the first spring 51 is compressed. After the rotating plate 8 and the rotating shaft 7 rotate 90 degrees, the first spring 51 pushes the clamping block 6 to engage with the groove of the rotating shaft 7 again, thereby restricting the rotation of the rotating shaft 7. During the descent of the moving plate 10, its bottom roller 18 rolls along the surface of the rotating plate 8, thereby reducing the frictional wear between the moving plate 10 and the rotating plate 8 and extending the service life of the components.

[0029] After the rotating plate 8 rotates 90 degrees, the second sleeve 11 and the contact block 12 become horizontally aligned, and the movable plate 15 contacts the PCB board. The first connecting plate 2 drives the two second connecting plates 3 to slide towards the middle, thereby causing the protective pad 17 to contact and press against the PCB board. The elasticity design of the second spring 13 is such that it can provide initial preload through the contact block 12, and also absorb vibration impact through deformation during the movement of the robotic arm, pushing the contact block 12 to slide back to its original position. Therefore, the pushing force of the second spring 13 on the PCB board is very small. Depending on the shape of the PCB board, different movable plates 15 contact the PCB board. The contact time is different, and the contact point between the movable plate 15 and the PCB board is different. The movable plate 15 rotates on the mounting plate 14 to ensure the contact area between the movable plate 15 and the PCB board. When the movable plate 15 rotates, the torsion spring 16 is twisted to clamp the PCB board and fix the second connecting plate 3. Then the PCB board is moved by the robotic arm 1. After moving to the target position, the first connecting plate 2 drives the second connecting plate 3 to slide to both sides. The second spring 13 rebounds and pushes the contact block 12 to slide and reset. Finally, the different movable plates 15 gradually separate from the PCB board, the PCB board falls down, and the loading is completed.

[0030] The rotating plate 8 used in the same batch of PCBs is consistent, thus enabling continuous feeding. The position of the second connecting plate 3 can be controlled only by the robotic arm 1 and the first connecting plate 2. During the movement of the second connecting plate 3, the clamping block 6 restricts the rotation of the rotating shaft 7. At the same time, each slide rail 9 is fitted with a magnet 20 at the top, which uses magnetic attraction to keep the moving plate 10 in the upper limit position when not in operation, preventing accidental fall when not in operation. There is enough contact surface between the falling moving plate 10 and the rotating plate 8, so that when the rotating plate 8 is under pressure, it cannot push the moving plate 10 to slide upward, ensuring stable operation. After the moving plate 15 is separated from the PCB, the torsion spring 16 rebounds to ensure the contact area between the moving plate 15 and the PCB each time, ensuring the stability of clamping.

[0031] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of this invention. Therefore, the scope of this invention should be limited only by the appended claims.

Claims

1. A loading device for PCB board processing, comprising a robotic arm (1), wherein a first connecting plate (2) is connected to the bottom of the robotic arm (1), and a second connecting plate (3) is slidably connected to both ends of the bottom of the first connecting plate (2), characterized in that: Also include the rotating plate (8), the second connecting plate (3) bottom is connected with several fixed plate (4), two second connecting plate (3) side away from each other are connected with several slide rail (9), the fixed plate (4) rotatably connected with the rotating shaft (7), the fixed plate (4) is provided with the stabilizing assembly of stabilizing the rotating shaft (7), the rotating plate (8) one end is connected to rotating shaft (7), and the rotating plate (8) is rotatably connected with the fixed plate (4), the rotating plate (8) the other end is connected with the second sleeve (11), the second sleeve (11) is provided with the extension assembly of clamping PCB board, the slide rail (9) is connected with the moving plate (10), the moving plate (10) is extruded with the rotating plate (8).

2. The feeding device for processing PCB according to claim 1, characterized in that the stabilizer The assembly includes a clamping block (6), the fixed plate (4) is connected with a first sleeve (5), one end of the clamping block (6) is connected with the first sleeve (5), the other end is connected with a triangular block, the rotating shaft (7) is provided with a groove, the triangular block of the clamping block (6) is limited with the groove of the rotating shaft (7), the first sleeve (5) is provided with a first spring (51), one end of the first spring (51) is connected with the first sleeve (5), the other end of the first spring (51) is connected with the clamping block (6).

3. The feeding device for processing PCB according to claim 2, characterized in that: The extension assembly includes a contact block (12), the contact block (12) is connected with the second sleeve (11), the second sleeve (11) is provided with a second spring (13), one end of the second spring (13) is connected with the second sleeve (11), the other end is connected with the contact block (12), the contact block (12) is connected with the mounting plate (14) on one end of the second sleeve (11), the mounting plate (14) is rotatably connected with the movable plate (15), the movable plate (15) is connected with the mounting plate (14) both ends of the shaft are provided with a torsion spring (16), one end of the torsion spring (16) is connected with the mounting plate (14), the other end is connected with the movable plate (15).

4. The feeding device for processing a PCB board according to claim 3, characterized in that: The movable plate (15) is connected with the protective pad (17) on one side of the PCB board.

5. The feeding device for processing a PCB board according to claim 4, characterized in that: The moving plate (10) is rotatably connected with the roller (18) on one end of the extrusion of the rotating plate (8).

6. The feeding device for processing a PCB board according to claim 5, characterized in that: The moving plate (10) is connected with the push block (19) on one side of the upper part away from the fixed plate (4).

7. The feeding device for processing a PCB board according to claim 6, characterized in that: The slide rail (9) is connected with the magnet (20) on the top, and the moving plate (10) is a magnetic metal.

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