PCB circuit board finished product washing machine

Abstract

The application relates to the technical field of conveying equipment on a plate washing machine, and discloses a PCB (Printed Circuit Board) finished product plate washing machine, which comprises a support, a group of linkage guide wheels movably sleeved with the left and right ends of the support, transmission belts frictionally and drivably connected to the outer surfaces of the two groups of linkage guide wheels, clamping members fixedly installed on the outer surfaces of the transmission belts, fixed blocks fixedly installed on the outer surfaces of the transmission belts, and upper clamping blocks fixedly installed on the top of one side of each fixed block. The PCB finished product plate washing machine is provided with the clamping members and the structure on the clamping members, the electromagnetic device drives the magnetic sleeve rod to produce different displacement amounts downwards to clamp PCBs of different thicknesses, the application range of the plate washing machine is effectively improved, the electromagnetic device is used to produce the downward displacement amount of the magnetic sleeve rod to clamp the PCB, the clamping effect of the PCB is better, and the PCB is not prone to shaking when being contacted with the washing and brushing device.

Description

Technical Field

[0001] This invention relates to the field of conveying equipment on a PCB washing machine, specifically a PCB circuit board washing machine. Background Technology

[0002] PCB (Printed Circuit Board) is the most basic and core component of electronic products. It is the support for electronic components and the carrier for their interconnection. In order to improve the processing quality of PCB, the water washing process after stripping (to remove waste solder from the PCB) is also a very important processing step. Among them, CN2018113347278 discloses a PCB washing mechanism that can automatically feed the board, and a conveying trough that cooperates with the PCB board product is set in the frame on it. A washing device and a baking device that cooperate with the PCB board are arranged in sequence below the conveying trough, thereby realizing the water washing action of the PCB board. However, the existing PCB washing machine's conveyor trough structure for PCB boards has a fixed gap, which means that the machine can only convey and wash PCB boards of a specific thickness. This greatly affects the machine's applicability. Furthermore, using the conveyor trough to convey the PCB board makes the board more mobile during the conveying and washing process, and it is prone to shaking when in contact with the washing device. This results in poor washing effect and low efficiency for the PCB board.

[0003] Therefore, there is an urgent need for a conveying mechanism for PCB washing machines to solve the defects of existing washing machines in actual use. Summary of the Invention

[0004] This invention provides a PCB board washing machine that can transport and wash PCB boards of different thicknesses on the same machine, thereby effectively improving the applicability of the machine. It also offers advantages such as better washing effect and higher efficiency for the PCB boards. This invention solves the problem of existing PCB washing machines with fixed conveyor trough structures that limit the transport and washing of PCB boards to specific thicknesses, significantly impacting their applicability. Furthermore, the use of conveyor troughs for transporting PCB boards results in greater movement during transport and washing, leading to shaking when in contact with the washing device, resulting in poor washing effect and low efficiency.

[0005] This invention provides the following technical solution: a PCB circuit board washing machine, comprising a support frame, with a set of linkage guide wheels movably sleeved at the left and right ends of the support frame, and a transmission belt frictionally connecting the outer surfaces of the two sets of linkage guide wheels. A clamping component is fixedly installed on the outer surface of the transmission belt, the clamping component including a fixed block fixedly installed on the outer surface of the transmission belt, an upper clamping block fixedly installed on the top of one side of the fixed block, and a lower clamping block fixedly installed on the bottom of one side of the fixed block. An electromagnetic device is fixedly installed inside the lower clamping block, and a magnetic sleeve rod extending from the bottom to the top of the inner cavity of the lower clamping block is movably sleeved inside the electromagnetic device, with the top end of the magnetic sleeve rod extending to the top of the lower clamping block, and elastically connected to it through an elastic rope group fixedly installed on the upper clamping block.

[0006] Preferably, a pressure plate is fixedly installed on one side of the top of the bracket, and the pressure plate and the top of the upper clamping block are in frictional contact with each other, and a carbon rod is provided on it to form an conductive connection and be electrically connected to the electromagnetic device.

[0007] Preferably, a fixed sleeve rod is movably sleeved inside the upper clamping block. The top end of the fixed sleeve rod is a hemispherical structure and forms a frictional conductive contact with the bottom end of the pressure plate. A feedback guide rod is movably sleeved inside the magnetic sleeve rod, with its top end extending to the top of the inner cavity of the fixed sleeve rod and its bottom end extending to the bottom of the magnetic sleeve rod. The top of the inner cavity of the fixed sleeve rod and the top of the outer surface of the feedback guide rod are elastically connected by a constant pressure spring.

[0008] Preferably, the top of the inner wall of the fixed sleeve is provided with a second conductive ring, which is initially offset from the first conductive ring fixedly sleeved on the top of the outer surface of the feedback guide rod. When relative movement occurs between the feedback guide rod and the fixed sleeve, they can come into contact with each other and conduct electricity, and an electrical connection is formed between the pressure plate and the electromagnetic device through the fixed sleeve, the second conductive ring and the first conductive ring.

[0009] Preferably, the first conductive ring and the second conductive ring form a feedback connection to the current on the electromagnetic device, and the degree of overlap between the first conductive ring and the second conductive ring is inversely proportional to the downward displacement of the magnetic sleeve driven by the electromagnetic device.

[0010] Preferably, there is a gap between the bottom end of the fixed sleeve rod and the top end of the magnetic sleeve rod, and they never come into contact when the top end of the fixed sleeve rod is pressed down by the pressure plate.

[0011] Preferably, the end of the pressure plate along the rotation direction of the clamping component on the transmission belt is beveled and cooperates with the hemispherical structure at the top of the fixed sleeve rod.

[0012] The present invention has the following beneficial effects: 1. This PCB board washing machine, with its clamping components and structures, uses an electromagnetic device to drive a magnetic sleeve rod to generate different downward displacements to clamp PCB boards of different thicknesses. Compared with existing washing machines, it can perform water washing on PCB boards of different thicknesses on the same machine, thus effectively improving the applicability of the machine. Moreover, the downward displacement of the magnetic sleeve rod by the electromagnetic device to clamp the PCB board results in a better clamping effect, preventing wobbling when in contact with the washing device, thereby effectively improving the water washing effect and work efficiency of the PCB board.

[0013] 2. The PCB board washing machine has a feedback guide rod and its structure. The feedback guide rod and its structure can form a feedback control circuit in the clamping component to control the current supplied by the electromagnetic device. The current supplied by the electromagnetic device can be automatically adjusted according to the thickness of the PCB board. The machine has good operability and high controllability. The purely mechanical structure design makes the conveying mechanism of the washing machine have a long service life and durability, as well as high stability and reliability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a front view of the structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the clamping component of the present invention; Figure 4 This is a front view of the clamping component of the present invention.

[0015] In the diagram: 1. Bracket; 2. Linkage guide wheel; 3. Transmission main shaft; 4. Transmission belt; 5. Clamping component; 6. Pressure plate; 7. Fixing block; 8. Upper clamping block; 9. Lower clamping block; 10. Electromagnetic device; 11. Magnetic sleeve rod; 12. Elastic rope group; 13. Feedback guide rod; 14. Fixing sleeve rod; 15. Constant pressure spring; 16. First conductive ring; 17. Second conductive ring; 18. Rubber pad. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1-2A PCB circuit board washing machine includes two sets of brackets 1 fixedly mounted on an operating table and arranged symmetrically. Each bracket 1 has a set of linkage guide wheels 2 movably sleeved at its left and right ends. A transmission shaft 3 is fixedly sleeved on the linkage guide wheels 2 and connected to a power output device. A transmission belt 4 is frictionally connected to the outer surfaces of the two sets of linkage guide wheels 2, and when the linkage guide wheels 2 rotate, the transmission belt 4 rotates accordingly. Several sets of clamping components 5 are fixedly mounted on the outer surface of the transmission belt 4, such as… Figure 3 As shown, the clamping component 5 includes a fixing block 7 fixedly installed on the outer surface of the transmission belt 4. An upper clamping block 8 is fixedly installed on the top of one side of the fixing block 7, and a lower clamping block 9 is fixedly installed on the bottom of one side of the fixing block 7. A protrusion is provided on the bottom of one side of the lower clamping block 9, and a rubber pad 18 is fixedly installed on the top of the protrusion. This can not only reduce the shock when the PCB board is clamped, but also effectively reduce the scratch damage caused to the PCB board. An electromagnetic device 10 is fixedly installed inside the lower clamping block 9. A magnetic sleeve rod 11 with its bottom end extending to the top of the inner cavity of the lower clamping block 9 is movably sleeved inside the electromagnetic device 10. An elastic washer is provided at the bottom end of the magnetic sleeve rod 11, which further reduces the scratch damage caused to the PCB board when it presses down to clamp the PCB board. The top end of the magnetic sleeve rod 11 extends to the top of the lower clamping block 9 and is elastically connected to it through an elastic rope group 12 fixedly installed on the upper clamping block 8. Then, the elastic force of the elastic rope group 12 will automatically drive the magnetic sleeve rod 11 back to its initial position when the magnetic force is no longer applied.

[0018] In this technical solution, a pressure plate 6 is fixedly installed on one side of the top of the bracket 1, and the pressure plate 6 and the top of the upper clamping block 8 are in frictional contact with each other. A carbon rod is provided on it to form an conductive connection and is electrically connected to the electromagnetic device 10. When the several sets of clamping components 5 on the transmission belt 4 rotate and move to the position below the pressure plate 6, the electromagnetic device 10 on it is energized and triggered to overcome the elastic force of the elastic rope group 12 and drive the magnetic sleeve rod 11 to move down to clamp the PCB board, so that it moves forward to perform the washing action. When the transmission belt 4 is removed from the position below the pressure plate 6, the electromagnetic device 10 on it is de-energized, and under the elastic force of the elastic rope group 12, the magnetic sleeve rod 11 is forced to move upward to release the clamped PCB board.

[0019] like Figures 3-4As shown, in this technical solution, a fixed sleeve rod 14 is movably sleeved inside the upper clamping block 8. The top end of the fixed sleeve rod 14 is set as a hemispherical structure and forms a frictional conductive contact with the bottom end of the pressure plate 6. A feedback guide rod 13 is movably sleeved inside the magnetic sleeve rod 11, with its top end extending to the top of the inner cavity of the fixed sleeve rod 14. The bottom end of the feedback guide rod 13 extends to the bottom of the magnetic sleeve rod 11. During the process of the fixed sleeve rod 14 driving the magnetic sleeve rod 11 to move down as a whole, it first makes contact with the PCB board. The top of the inner cavity of the fixed sleeve rod 14 and the top of the outer surface of the feedback guide rod 13 are elastically connected by a constant pressure spring 15.

[0020] In this technical solution, a second conductive ring 17 is provided at the top of the inner wall of the fixed sleeve rod 14, and is initially offset from the first conductive ring 16 fixedly sleeved on the top of the outer surface of the feedback guide rod 13. When relative movement occurs between the feedback guide rod 13 and the fixed sleeve rod 14, they can come into contact with each other and conduct electricity. An electrical connection is formed between the pressure plate 6 and the electromagnetic device 10 through the fixed sleeve rod 14, the second conductive ring 17 and the first conductive ring 16.

[0021] In this technical solution, the first conductive ring 16 and the second conductive ring 17 form a feedback connection with the current on the electromagnetic device 10, and the degree of overlap between the first conductive ring 16 and the second conductive ring 17 is inversely proportional to the downward displacement of the magnetic sleeve 11 driven by the electromagnetic device 10. The greater the overlap between them, the smaller the displacement of the magnetic sleeve 11 driven by the electromagnetic device 10; and the smaller the overlap between them, the greater the displacement of the magnetic sleeve 11 driven by the electromagnetic device 10. Thus, the downward displacement of the magnetic sleeve 11 can be automatically adjusted according to the different specifications and thicknesses of the PCB board, and the clamping force of the clamping member 5 on the PCB board can be adjusted.

[0022] In this technical solution, there is a gap between the bottom end of the fixed sleeve rod 14 and the top end of the magnetic sleeve rod 11, and when the top of the fixed sleeve rod 14 is squeezed by the pressure plate 6 and moves downward, there is never any contact between them.

[0023] In this technical solution, the end of the pressure plate 6 along the rotation direction of the clamping member 5 on the transmission belt 4 is beveled and cooperates with the hemispherical structure at the top of the fixed sleeve rod 14. Thus, under the squeezing action of the pressure plate 6, a downward pressure can be applied to the clamping member 5 on the transmission belt 4 below it, and trigger the clamping member 5 and the structure on it to move.

[0024] The usage method and working principle of this embodiment are as follows: First, arrange the two sets of brackets 1 symmetrically on the operating table according to the above content. When it is necessary to wash the PCB board, use the conveying mechanism or manually to place the PCB board horizontally in front of the rubber pad 18 on the lower clamping block 9. Then start the power output device and drive the linkage guide wheel 2 to rotate under the transmission action of the transmission main shaft 3, and force the transmission belt 4 and the clamping component 5 on it to rotate and move. When the clamping member 5 on the transmission belt 4 rotates and moves to the position below the pressure plate 6, it is squeezed by the pressure plate 6 and the fixed sleeve rod 14 is squeezed and driven to move downward. This causes the feedback guide rod 13 on it to move downward, so that its bottom end contacts the PCB board on the conveying mechanism. It also compresses the constant pressure spring 15 in the opposite direction, so that the first conductive ring 16 on the feedback guide rod 13 and the second conductive ring 17 on the fixed sleeve rod 14 overlap each other. This controls the magnitude of the current supplied to the electromagnetic device 10 and forces the magnetic sleeve rod 11 to generate different displacements downward to clamp PCB boards of different thicknesses on the conveying mechanism and drive them to move in the air for water washing. When the clamping member 5 on the transmission belt 4 moves away from the pressure plate 6, the top of the fixed sleeve rod 14 is no longer subjected to the squeezing force of the pressure plate 6. Under the elastic force of the constant pressure spring 15, the fixed sleeve rod 14 moves upward, causing the first conductive ring 16 and the second conductive ring 17 to be misaligned and cutting off the current connection to the electromagnetic device 10. Then, under the elastic force of the elastic rope group 12, the magnetic sleeve rod 11 moves upward and releases the clamping action on the PCB board, allowing it to be released from the washing machine under the action of the conveying mechanism, thereby completing the water washing action on the PCB board.

Claims

1. A PCB circuit board washing machine, comprising a support (1), wherein a set of linkage guide wheels (2) are movably sleeved at the left and right ends of the support (1), and a transmission belt (4) is frictionally connected to the outer surfaces of the two sets of linkage guide wheels (2), and a clamping member (5) is fixedly installed on the outer surface of the transmission belt (4), characterized in that: The clamping member (5) includes a fixed block (7) fixedly installed on the outer surface of the transmission belt (4). An upper clamping block (8) is fixedly installed on the top of one side of the fixed block (7), and a lower clamping block (9) is fixedly installed on the bottom of one side of the fixed block (7). An electromagnetic device (10) is fixedly installed inside the lower clamping block (9). A magnetic sleeve rod (11) with its bottom end extending to the top of the inner cavity of the lower clamping block (9) is movably sleeved inside the electromagnetic device (10), and the top end of the magnetic sleeve rod (11) extends to the top of the lower clamping block (9) and is elastically connected to it by an elastic rope group (12) fixedly installed on the upper clamping block (8). A pressure plate (6) is fixedly installed on one side of the top of the bracket (1), and the pressure plate (6) and the top of the upper clamping block (8) are in frictional contact with each other, and a carbon rod is provided on it to form an conductive connection and electrically connect with the electromagnetic device (10). The upper clamping block (8) is movably sleeved with a fixed sleeve rod (14). The top end of the fixed sleeve rod (14) is set as a hemispherical structure and forms a frictional conductive contact with the bottom end of the pressure plate (6). A feedback guide rod (13) with its top end extending to the top of the inner cavity of the fixed sleeve rod (14) is movably sleeved inside the magnetic sleeve rod (11). The bottom end of the feedback guide rod (13) extends to the bottom of the magnetic sleeve rod (11). The top of the inner cavity of the fixed sleeve rod (14) and the top of the outer surface of the feedback guide rod (13) are elastically connected by a constant pressure spring (15). The top of the inner wall of the fixed sleeve (14) is provided with a second conductive ring (17), which is initially offset from the first conductive ring (16) fixedly sleeved on the top of the outer surface of the feedback guide rod (13). When relative movement occurs between the feedback guide rod (13) and the fixed sleeve (14), they can come into contact with each other and conduct electricity. An electrical connection is formed between the pressure plate (6) and the electromagnetic device (10) through the fixed sleeve (14), the second conductive ring (17) and the first conductive ring (16). The first conductive ring (16) and the second conductive ring (17) form a feedback connection to the current on the electromagnetic device (10), and the degree of overlap between the first conductive ring (16) and the second conductive ring (17) is inversely proportional to the downward displacement of the magnetic sleeve (11) driven by the electromagnetic device (10).

2. The PCB circuit board washing machine according to claim 1, characterized in that: There is a gap between the bottom end of the fixed sleeve (14) and the top end of the magnetic sleeve (11), and they never come into contact when the top of the fixed sleeve (14) is pressed down by the pressure plate (6).

3. A PCB circuit board washing machine according to claim 2, characterized in that: The pressure plate (6) is beveled at one end along the rotation direction of the clamping member (5) on the transmission belt (4), and it cooperates with the hemispherical structure at the top of the fixed sleeve rod (14).

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