A kind of anti-soldering oil filling device with scraping function

Abstract

This utility model relates to the field of solder resist filling technology and discloses a solder resist filling device with a smoothing function. It includes a support, with two first electric telescopic rods fixedly connected to the bottom surface of the support. The telescopic ends of the two first electric telescopic rods are jointly fixedly connected to a lifting platform. A second electric telescopic rod is fixedly connected to the bottom side wall of the lifting platform. The device moves a movable column by extending and retracting the second electric telescopic rod, which in turn moves a scraper plate to adjust its left-right distance. A miniature electric push rod extends and retracts, moving the scraper plate up and down. This allows for precise adjustment of the relative position between the scraper plate and the circuit board, ensuring the scraper plate fits snugly against the solder resist filling area. After adjusting the scraper plate to the desired smoothing position using the second electric telescopic rod, the miniature electric push rod pushes the scraper plate down to contact the solder resist surface. Subsequently, the second electric telescopic rod moves the scraper plate left and right to complete the smoothing process. This solves the problem of uneven solder resist surfaces caused by the lack of a smoothing function in existing devices.

Description

Technical Field

[0001] This utility model relates to the field of anti-welding oil filling technology, and more specifically, it relates to an anti-welding oil filling device with a scraping function. Background Technology

[0002] Solder resist filling is a key process in the production of electronic circuit boards. By precisely filling solder resist into specific areas such as the gaps between the pads on the circuit board, a protective layer is formed to prevent bridging, short circuits and other defects during soldering. This ensures the soldering quality and electrical performance stability of the circuit board and is an important step in improving the yield rate of circuit board production. With the rapid development of the electronics manufacturing industry and the continuous improvement of circuit board integration, the requirements for the precision, efficiency and effectiveness of solder resist filling are becoming increasingly stringent.

[0003] However, existing solder resist filling devices can only deliver and initially fill the solder resist during operation, and cannot perform a smoothing operation after filling. The filled solder resist is prone to forming an uneven state on the circuit board surface. On the one hand, the raised parts may fall off or shift due to external force during subsequent circuit board assembly and soldering, resulting in protection failure and short circuit risk. On the other hand, the solder resist thickness in the recessed areas is insufficient, which cannot effectively block solder, reducing the reliability of solder resist. Moreover, the irregular surface shape will also have an adverse effect on subsequent circuit board appearance inspection, coating and other processes, increasing the production defect rate and rework cost, making it difficult to meet the production needs of high-precision circuit boards. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above situation and to overcome the defects of the prior art, this utility model provides a welding oil filling device with a scraping function, which aims to solve the problems in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this application provides the following technical solution: a welding oil filling device with a scraping function, comprising a support, two first electric telescopic rods fixedly connected to the bottom surface of the support, a lifting platform fixedly connected to the telescopic ends of the two first electric telescopic rods, a second electric telescopic rod fixedly connected to the bottom side wall of the lifting platform, a connector fixedly connected to the telescopic end of the second electric telescopic rod, a movable column fixedly connected to the end of the connector away from the second electric telescopic rod, a nozzle head fixedly connected to the bottom end of the movable column, and a mounting plate fixedly connected to the outer surface of the left side of the nozzle head. A miniature electric push rod is fixedly connected to the outer surface of the left side of the movable column. A scraper plate is fixedly connected to the telescopic end of the miniature electric push rod. Multiple grooves are formed on the inclined surface of the lower right side of the scraper plate. A sponge board is provided on the left side of the bottom end of the mounting plate. Velcro is fixedly connected to the inner wall of the lower left end of the mounting plate and the right side of the sponge board. A storage tank and a peristaltic pump are fixedly connected to the upper surface of the lifting platform. An inlet pipe and an outlet pipe are fixedly connected to the input and output ends of the peristaltic pump, respectively. A solenoid valve is fixedly connected to the outer surface of the outlet pipe. A circuit board placement seat is fixedly connected to the upper surface of the support.

[0008] The present invention is further configured such that: the bottom surface of the lifting platform has an arc-shaped groove, the interior of the arc-shaped groove is slidably connected to the top of the moving column; the lower right side of the scraper plate is inclined; the two Velcro fasteners are adhered to each other on their adjacent sides; the right side of the sponge plate is in contact with the left side of the bottom of the mounting plate; the sponge plate is a right-angled triangle; the inclined surface of the sponge plate is attached to multiple grooves; the end of the inlet pipe away from the peristaltic pump extends into the interior of the storage tank; the end of the outlet pipe away from the peristaltic pump extends into the interior of the nozzle head; the circuit board holder is located directly below the nozzle head; two balance frames are fixedly connected to the outer surface of the moving column; two balance grooves are opened on the bottom surface of the lifting platform; the outer surface of the top of each balance frame is slidably connected to the interior of the balance groove.

[0009] The present invention is further configured such that two lifting grooves are provided on the front of the support, and each lifting groove is slidably connected to a stabilizing plate inside, and the front of both stabilizing plates is fixedly connected to the back of the lifting platform.

[0010] The present invention is further configured such that a controller is fixedly connected to the upper surface of the support, and the controller is electrically connected to the first electric telescopic rod, the second electric telescopic rod, the miniature electric push rod, the peristaltic pump and the solenoid valve respectively through wires.

[0011] The present invention is further configured such that two sliding grooves are provided on the left side of the mounting plate, and a sliding plate is slidably connected inside each sliding groove, and the left side of each sliding plate is fixedly connected to the right side of the scraping plate.

[0012] The present invention is further configured such that two locking plates are fixedly connected to the outer surface of the discharge pipe, and the left side of each locking plate is fixedly connected to the outer surface of the moving column.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The second electric telescopic rod extends and retracts to move the moving column, which in turn adjusts the left and right distance of the scraper plate. The miniature electric push rod extends and retracts to move the scraper plate up and down, allowing for precise adjustment of the relative position between the scraper plate and the circuit board. This ensures that the scraper plate fits the solder resist filling area. After the solder resist is filled, the scraper plate is first adjusted to the desired leveling position using the second electric telescopic rod. Then, the miniature electric push rod pushes the scraper plate down to contact the solder resist surface. Subsequently, the second electric telescopic rod moves the scraper plate left and right to complete the leveling. This avoids incomplete leveling due to positional deviations and solves the problem of uneven solder resist surface caused by the lack of leveling function in existing devices. It also prevents short circuits caused by protruding parts falling off and insufficient protection in recessed areas. After leveling, the miniature electric push rod moves the scraper plate up to reset it. The groove on its inclined surface contacts the sponge plate, which absorbs residual solder resist, preventing secondary contamination and ensuring the solder resist quality and production stability of the circuit board. Attached Figure Description

[0016] Figure 1 This is a three-dimensional overall structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the solenoid valve of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the arc-shaped groove of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the miniature electric actuator of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the sponge board of this utility model;

[0021] Figure 6 This is a three-dimensional structural diagram of the Velcro attachment of this utility model;

[0022] Figure 7 This is a three-dimensional structural diagram of the groove of this utility model.

[0023] In the diagram: 1. Support; 2. Lifting groove; 3. Second electric telescopic rod; 4. Controller; 5. Miniature electric push rod; 6. Circuit board holder; 7. Scraper plate; 8. Balance frame; 9. Lifting platform; 10. Inlet pipe; 11. Outlet pipe; 12. Peristaltic pump; 13. Storage tank; 14. First electric telescopic rod; 15. Moving column; 16. Nozzle head; 17. Clamping plate; 18. Solenoid valve; 19. Stabilizing plate; 20. Arc groove; 21. Balance groove; 22. Connector; 23. Mounting plate; 24. Sponge board; 25. Sliding groove; 26. Velcro; 27. Sliding plate; 28. Groove. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0027] Please see Figures 1-7 The system includes a support 1, to which two first electric telescopic rods 14 are fixedly connected. The telescopic ends of the two first electric telescopic rods 14 are jointly fixedly connected to a lifting platform 9. A second electric telescopic rod 3 is fixedly connected to the bottom side wall of the lifting platform 9. A connector 22 is fixedly connected to the telescopic end of the second electric telescopic rod 3. A moving column 15 is fixedly connected to the end of the connector 22 furthest from the second electric telescopic rod 3. A nozzle head 16 is fixedly connected to the bottom end of the moving column 15. A mounting plate 23 is fixedly connected to the outer left side of the nozzle head 16. A miniature electric push rod 5 is fixedly connected to the outer left side of the moving column 15. The telescopic end of the miniature electric push rod 5 is fixedly connected to a scraper plate 7. Multiple grooves 28 are provided on the lower right slope of the scraper plate 7. A sponge plate 24 is provided on the left side of the bottom end of the mounting plate 23. The inner wall of the lower left side of the mounting plate 23 and the right side of the sponge plate 24 are fixedly connected to Velcro 26. The upper surface of the lifting platform 9 is fixedly connected to a storage tank 13 and a peristaltic pump 12. The input end and output end of the peristaltic pump 12 are fixedly connected to an inlet pipe 10 and an outlet pipe 11, respectively. The outer surface of the outlet pipe 11 is fixedly connected to a solenoid valve 18. The upper surface of the support 1 is fixedly connected to a circuit board placement seat 6.

[0028] Specifically, when the two first electric telescopic rods 14 on the bottom surface of the support 1 extend and retract, they drive the lifting platform 9 to move up and down, adjusting the distance between the nozzle head 16 and the circuit board on the circuit board placement seat 6. The second electric telescopic rod 3 pushes the moving column 15 to move through the connector 22, so that the nozzle head 16 is aligned with the filling position. The peristaltic pump 12 draws solder resist oil from the storage tank 13 through the inlet pipe 10, and delivers it to the nozzle head 16 for filling through the outlet pipe 11 and the solenoid valve 18. After filling, the miniature electric push rod 5 pushes the scraper plate 7 to move down to contact the surface of the solder resist oil. The second electric telescopic rod 3 drives the moving column 15 to move to achieve leveling. After leveling, the scraper plate 7 returns to its original position, and its groove 28 contacts the sponge plate 24 fixed on the mounting plate 23 by Velcro 26, absorbing the residual solder resist oil. This solves the problem of uneven surface after the solder resist oil is filled and improves the filling quality.

[0029] Please see Figures 1-7 The bottom surface of the lifting platform 9 has an arc-shaped groove 20, and the interior of the arc-shaped groove 20 is slidably connected to the top of the moving column 15. The lower right side of the scraper plate 7 is inclined, and the two Velcro strips 26 are attached to each other on their close sides. The right side of the sponge plate 24 is in contact with the left side of the bottom of the mounting plate 23. The sponge plate 24 is a right-angled triangle, and the inclined side of the sponge plate 24 is attached to multiple grooves 28. The end of the inlet pipe 10 away from the peristaltic pump 12 passes through the interior of the storage tank 13, and the end of the outlet pipe 11 away from the peristaltic pump 12 passes through the interior of the nozzle head 16. The circuit board placement seat 6 is located directly below the nozzle head 16. Two balance frames 8 are fixedly connected to the outer surface of the moving column 15. The bottom surface of the lifting platform 9 has two balance grooves 21, and the outer surface of the top of each balance frame 8 is slidably connected to the interior of the balance groove 21.

[0030] Specifically, the top of the moving column 15 slides within the arc-shaped groove 20 of the lifting platform 9, while the balance frame 8 on its outer surface slides within the balance groove 21, making the moving column 15 move more smoothly and ensuring that the scraper plate 7 scrapes evenly. The inlet pipe 10 and outlet pipe 11 are respectively connected to the storage tank 13 and the nozzle head 16 to ensure stable delivery of solder resist oil. The circuit board placement seat 6 is located directly below the nozzle head 16 to ensure accurate filling position. The inclined surface of the sponge plate 24 is attached to the groove 28 of the scraper plate 7 to improve the adsorption effect of residual solder resist oil. The Velcro 26 facilitates the replacement of the sponge plate 24, further ensuring the flatness and cleanliness of the solder resist oil surface after scraping.

[0031] Please see Figures 1-7 The support 1 has two lifting slots 2 on its front side. The interior of each lifting slot 2 is slidably connected to the stabilizing plate 19. The front of both stabilizing plates 19 is fixedly connected to the back of the lifting platform 9.

[0032] Specifically, when the lifting platform 9 moves up and down, the stabilizing plate 19 on its back slides in the lifting groove 2 of the support 1, restricting the direction of movement of the lifting platform 9, preventing deviation or shaking during the lifting process, ensuring that the nozzle head 16 and the scraper plate 7 can be accurately aligned with the filling area of ​​the circuit board, avoiding filling position deviation and poor scraping effect caused by unstable lifting, and enhancing the overall stability of the device operation.

[0033] Please see Figures 1-7 A controller 4 is fixedly connected to the upper surface of the support 1. The controller 4 is electrically connected to the first electric telescopic rod 14, the second electric telescopic rod 3, the micro electric push rod 5, the peristaltic pump 12 and the solenoid valve 18 through wires.

[0034] Specifically, the controller 4 controls the first electric telescopic rod 14 via wires to adjust the height of the lifting platform 9, controls the second electric telescopic rod 3 and the micro electric push rod 5 to adjust the position and leveling action of the scraper plate 7, and simultaneously controls the start and stop of the peristaltic pump 12 and the opening and closing of the solenoid valve 18 to adjust the delivery volume and timing of the anti-welding oil. This achieves automated control of the filling and leveling process, reduces human error, improves production efficiency, ensures coordinated action of all components, and further solves the problem of unstable anti-welding oil filling quality.

[0035] Please see Figures 1-7 The left side of the mounting plate 23 has two sliding grooves 25, and a sliding plate 27 is slidably connected inside each sliding groove 25. The left side of each sliding plate 27 is fixedly connected to the right side of the scraper plate 7. The outer surface of the discharge pipe 11 is fixedly connected to two locking plates 17, and the left side of each locking plate 17 is fixedly connected to the outer surface of the moving column 15.

[0036] Specifically, when the scraper plate 7 moves, the sliding plate 27 on its right side slides in the sliding groove 25 of the mounting plate 23, which guides the movement of the scraper plate 7, ensuring accurate scraping direction and preventing the scraper plate 7 from deviating and affecting the scraping effect. The discharge pipe 11 is fixed to the moving column 15 by the locking plate 17 to prevent the pipe from shaking, which would cause unstable delivery of anti-welding oil or displacement of the filling position of the nozzle head 16. This ensures the stability of the anti-welding oil delivery and scraping action, and improves the reliability of the device.

[0037] Working principle:

[0038] During operation, the circuit board is placed on the circuit board placement seat 6. The controller 4 controls the extension and retraction of the two first electric telescopic rods 14 via wires, driving the lifting platform 9 to move up and down. At the same time, the stabilizing plate 19 on the back of the lifting platform 9 slides in the lifting groove 2 of the support 1 to ensure smooth lifting. The distance between the nozzle head 16 and the circuit board is adjusted. The controller 4 controls the peristaltic pump 12 to start, drawing solder resist oil from the storage tank 13 through the inlet pipe 10. The oil is then delivered to the nozzle head 16 through the outlet pipe 11 and the solenoid valve 18 to accurately fill the circuit board. The outlet pipe 11 is fixed to the moving column 15 by the locking plate 17 to ensure stable delivery. After filling is completed, the controller 4 controls the second electric telescopic rod. 3. The movable column 15 is moved by the connector 22. The top of the movable column 15 slides in the arc groove 20, and the balance frame 8 on its outer surface slides in the balance groove 21 to ensure smooth movement. At the same time, the micro electric push rod 5 pushes the scraper plate 7 down. The sliding plate 27 on the right side of the scraper plate 7 slides in the sliding groove 25 of the mounting plate 23 to ensure accurate scraping direction. The scraper plate 7 contacts the surface of the anti-weld oil and scrapes it to solve the problem of uneven surface. After scraping, the scraper plate 7 is reset. Its groove 28 contacts the sponge plate 24 fixed on the mounting plate 23 by Velcro 26 to absorb residual anti-weld oil. Velcro 26 makes it easy to replace the sponge plate 24 to ensure stable subsequent filling and scraping effects.

[0039] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A welding oil filling device with a scraping function, comprising a support (1), characterized in that: The bottom surface of the support (1) is fixedly connected to two first electric telescopic rods (14). The telescopic ends of the two first electric telescopic rods (14) are fixedly connected to a lifting platform (9). The bottom side wall of the lifting platform (9) is fixedly connected to a second electric telescopic rod (3). The telescopic end of the second electric telescopic rod (3) is fixedly connected to a connector (22). The end of the connector (22) away from the second electric telescopic rod (3) is fixedly connected to a moving column (15). The bottom end of the moving column (15) is fixedly connected to a nozzle head (16). The outer surface of the left side of the nozzle head (16) is fixedly connected to a mounting plate (23). The outer surface of the left side of the moving column (15) is fixedly connected to a miniature electric push rod (5). The telescopic end of the push rod (5) is fixedly connected to a scraper plate (7). The lower right side of the scraper plate (7) has multiple grooves (28). The bottom left side of the mounting plate (23) is provided with a sponge plate (24). The inner wall of the lower left side of the mounting plate (23) and the right side of the sponge plate (24) are fixedly connected with Velcro (26). The upper surface of the lifting platform (9) is fixedly connected to a storage tank (13) and a peristaltic pump (12). The input end and output end of the peristaltic pump (12) are fixedly connected to an inlet pipe (10) and an outlet pipe (11). The outer surface of the outlet pipe (11) is fixedly connected to a solenoid valve (18). The upper surface of the support (1) is fixedly connected to a circuit board placement seat (6).

2. The anti-welding oil filling device with a scraping function according to claim 1, characterized in that: The bottom surface of the lifting platform (9) is provided with an arc-shaped groove (20). The interior of the arc-shaped groove (20) is slidably connected to the top of the moving column (15). The lower right side of the scraper plate (7) is inclined. The two Velcro strips (26) are adhered to each other on their closest sides. The right side of the sponge board (24) is in contact with the left side of the bottom of the mounting plate (23). The sponge board (24) is a right triangle. The inclined surface of the sponge board (24) is attached to multiple grooves (28). The inlet pipe (10) The end of the discharge pipe (11) away from the peristaltic pump (12) extends into the interior of the storage tank (13). The end of the discharge pipe (11) away from the peristaltic pump (12) extends into the interior of the nozzle head (16). The circuit board placement seat (6) is located directly below the nozzle head (16). Two balance frames (8) are fixedly connected to the outer surface of the moving column (15). Two balance grooves (21) are opened on the bottom surface of the lifting platform (9). The outer surface of the top of each balance frame (8) is slidably connected to the interior of the balance groove (21).

3. The anti-welding oil filling device with a scraping function according to claim 1, characterized in that: The support (1) has two lifting slots (2) on its front side. Each lifting slot (2) is slidably connected to a stabilizing plate (19). The front sides of the two stabilizing plates (19) are fixedly connected to the back side of the lifting platform (9).

4. The anti-welding oil filling device with a scraping function according to claim 1, characterized in that: The upper surface of the support (1) is fixedly connected to a controller (4), which is electrically connected to the first electric telescopic rod (14), the second electric telescopic rod (3), the micro electric push rod (5), the peristaltic pump (12) and the solenoid valve (18) respectively via wires.

5. The anti-welding oil filling device with a scraping function according to claim 1, characterized in that: The mounting plate (23) has two sliding grooves (25) on its left side. Each sliding groove (25) is slidably connected to a sliding plate (27). The left side of each sliding plate (27) is fixedly connected to the right side of the scraper plate (7).

6. The anti-welding oil filling device with a scraping function according to claim 1, characterized in that: Two locking plates (17) are fixedly connected to the outer surface of the discharge pipe (11), and the left side of each locking plate (17) is fixedly connected to the outer surface of the moving column (15).

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