A circuit board patching auxiliary tool

Abstract

The utility model discloses a kind of circuit board patching auxiliary tool, by being provided with the adjusting mechanism being constituted by knob, transverse stud, stepper motor and screw rod etc., the precision, flexible movement of circuit board and its fixed on work type plate in front and back, left and right direction is driven, to position any to be pasted on the circuit board welding position to the just above of heat dissipation part quickly, realizes pertinence local heat dissipation, effectively avoid the damage caused by welding overheating to component, simultaneously, by the design of V-shaped plate, mounting hole and blower fan, high-efficiency directional air duct is built, and local heat dissipation efficiency is improved;And the cooperation of U-shaped baffle and jacking stud, the stable clamping of circuit board in processing process is ensured.The overall structure is reasonable, convenient to operate, while guaranteeing the heat dissipation effect, positioning precision and operation efficiency of circuit board patching processing are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit board surface mount technology, specifically to an auxiliary tooling for circuit board surface mount. Background Technology

[0002] During the surface mount technology (SMT) assembly of circuit boards, the soldering process generates a significant amount of heat. If heat dissipation is insufficient, localized overheating of the circuit board can easily occur, affecting the performance and lifespan of electronic components. Current technologies often employ fixed cooling fans for overall cooling of the working area, but this is insufficient for precise and effective localized cooling of circuit boards of different sizes or with different mounting positions. Furthermore, conventional circuit board fixtures often use simple clamping structures lacking flexible position adjustment capabilities. When soldering at different mounting points on the circuit board, manual and repeated adjustments to the board position are often required, which is not only cumbersome and inaccurate but also increases processing time and operational difficulty, impacting the efficiency and quality of SMT assembly. Therefore, there is an urgent need for an auxiliary fixture capable of rapid positioning and precise movement of circuit boards with targeted heat dissipation functions to meet the demands of efficient and high-precision SMT assembly. Utility Model Content

[0003] In view of the problems existing in the prior art, this utility model discloses an auxiliary tooling for circuit board surface mount technology (SMT). The technical solution adopted includes a fixed frame, an L-shaped fixed plate, fixing bolts, a V-shaped plate, a heat dissipation section, a mounting groove, a horizontal stud, a knob, a mounting rod, a U-shaped rod, a stepper motor, a lead screw, a mounting ring, a movable sleeve, a vertical column, an I-shaped plate, a U-shaped baffle, and a tightening stud. The L-shaped fixed plate is integrally formed at the four corners of the bottom of the fixed frame. The horizontal part of the L-shaped fixed plate is fixed in position by fixing bolts and pre-drilled screw holes on the worktable. A V-shaped plate is fixed in the fixed frame, and a heat dissipation section is provided on the V-shaped plate. The heat dissipation section corresponds to the welding head position of the SMT soldering machine, providing targeted heat dissipation at the welding position. A mounting slot is cut at the front of the frame. The right end of the transverse stud is rotatably connected to the inner wall of the right side of the mounting slot. (A blind-hole stepped hole is machined on the inner wall of the right side of the mounting slot. This stepped hole consists of a large-diameter section and a small-diameter section from the inside out, forming a stepped surface. A set of combined bearings is installed in the stepped hole, preferably a "deep groove ball bearing with a dust cover on one side". The outer ring of the bearing is fixed to the large-diameter section with an interference fit. A corresponding journal is machined on the right end of the transverse stud. This journal is fixed to the inner ring of the bearing with an interference fit, so that the right end of the transverse stud is reliably supported in the stepped hole. The bearing is axially positioned internally by the stepped surface of the stepped hole, and externally fixed by a shaft retaining ring embedded in the stepped hole.) This design effectively prevents axial movement of the transverse stud during rotation. The left end extends from the through hole (slightly larger than the stud diameter) on the left side wall of the mounting groove, and a knob is fixed at the extended end. Rotating the knob rotates the transverse stud. The lower end of the mounting rod fits into the mounting groove and engages with the transverse stud, moving along the mounting groove as the transverse stud rotates. The upper end of the mounting rod is integrally formed into a U-shaped rod, with a lead screw mounted in the U-shaped rod rotating in the front-to-back direction. The lead screw is driven by a stepper motor powered by a battery. (Bearing mounting holes are machined on the inner walls of the front and rear horizontal sections of the U-shaped rod, and roller bearings are installed within them. The stepper motor is fixed to the outer wall of the right side plate of the U-shaped rod via a motor mounting plate. Its output shaft...) (Connected to the front end of the lead screw via a flexible coupling), the opening and closing are controlled by a remote control. The fitting ring is installed in conjunction with the lead screw. The movable sleeve and the U-shaped rod are movably fitted together in the front and rear directions. The fitting ring and the movable sleeve are connected by a plate. The plate is fixedly connected to the I-shaped plate by a vertical column. The front and rear ends of the upper surface of the I-shaped plate are fixed with U-shaped baffles. The tightening studs are installed on the U-shaped baffles to tighten the workpiece placed in the U-shaped baffles on the I-shaped plate. Since the position of the heat dissipation part is fixed, while the position of the patch is different on the circuit board, the circuit board can be moved in the front, back, left and right directions by rotating the knob and starting the stepper motor, so that the patch position is above the heat dissipation part, providing targeted heat dissipation for the processing process.

[0004] As a preferred technical solution of this utility model, the heat dissipation part includes a mounting hole and a fan. The middle of the V-shaped plate is horizontal, and the horizontal part has a mounting hole. A frame is fixed in the mounting hole, and a fan is installed on the frame. The fan is powered by a battery and controlled by a separate remote control switch.

[0005] As a preferred technical solution of this utility model, an arc frame is fixed on the horizontal part of the V-shaped plate, and the arc frame is connected with the mounting hole to form an air duct.

[0006] As a preferred technical solution of this utility model, anti-slip grooves are distributed on the outer side of the knob, and several through slots are distributed on the I-shaped plate.

[0007] As a preferred technical solution of this utility model, a shaft is fixed on the rear side of the U-shaped rod, and a roller is rotatably installed on the shaft. The roller contacts the upper surface of the fixing frame to support the rear side of the U-shaped rod.

[0008] The beneficial effects of this utility model are as follows: By setting an adjustment mechanism composed of knobs, horizontal studs, stepper motors, and lead screws, the I-beam plate and the circuit board fixed on it can be driven to move precisely and flexibly in the front-back and left-right directions. This allows any position on the circuit board to be soldered to be quickly positioned directly above the heat sink, achieving targeted local heat dissipation and effectively avoiding damage to components caused by overheating during soldering. Simultaneously, the design of the V-shaped plate, mounting holes, and fan creates an efficient directional airflow, improving local heat dissipation efficiency. The cooperation between the U-shaped baffle and the tightening stud ensures the stable clamping of the circuit board during processing. The overall structure is reasonable and easy to operate, significantly improving the positioning accuracy and work efficiency of circuit board soldering while ensuring heat dissipation. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is a schematic diagram of the rear structure of this utility model;

[0011] Figure 3 This is a schematic diagram of the structure of this utility model from a bottom view.

[0012] In the diagram: 1. Fixed frame; 2. L-shaped fixed plate; 3. Fixed bolt; 4. V-shaped plate; 41. Mounting hole; 42. Fan; 6. Mounting groove; 7. Horizontal stud; 8. Knob; 9. Mounting rod; 10. U-shaped rod; 11. Stepper motor; 12. Lead screw; 13. Mounting ring; 14. Movable sleeve; 15. Vertical column; 16. I-shaped plate; 17. U-shaped baffle; 19. Tightening stud. Detailed Implementation

[0013] Example 1

[0014] like Figures 1 to 3As shown, this utility model discloses an auxiliary tooling for circuit board mounting. The technical solution adopted includes a fixed frame 1, an L-shaped fixed plate 2, fixed bolts 3, a V-shaped plate 4, a heat dissipation part, a mounting groove 6, a horizontal stud 7, a knob 8, a mounting rod 9, a U-shaped rod 10, a stepper motor 11, a lead screw 12, a mounting ring 13, a movable sleeve 14, a vertical column 15, an I-shaped plate 16, a U-shaped baffle 17, and a tightening stud 19. The L-shaped fixed plate 2 is integrally formed at the four corners of the bottom of the fixed frame 1. The horizontal part of the L-shaped fixed plate 2 is fixed in position by fitting with the pre-drilled screw holes of the worktable through the fixed bolts 3. The V-shaped plate 4 is fixed in the fixed frame 1. The V-shaped plate 4 is provided with a heat dissipation part. The mounting groove 6 is opened at the front of the fixed frame 1. The horizontal stud The right end of the mounting rod 7 is rotatably connected to the inner wall of the right side of the mounting groove 6, and the left end extends out from the through hole on the left side wall of the mounting groove 6 and a knob 8 is fixed at the extended end. The lower end of the mounting rod 9 is fitted into the mounting groove 6 and is installed in conjunction with the horizontal stud 7. The upper end of the mounting rod 9 is integrally formed into a U-shaped rod 10. A lead screw 12 is rotatably installed in the U-shaped rod 10 in the front and back direction. The lead screw 12 is driven by a stepper motor 11. The mounting ring 13 is installed in conjunction with the lead screw 12. The movable sleeve 14 is movably fitted with the rod part of the U-shaped rod 10 in the front and back direction. The mounting ring 13 and the movable sleeve 14 are connected by a plate. The plate is fixedly connected to the I-shaped plate 16 by a vertical column 15. The front and rear ends of the upper surface of the I-shaped plate 16 are fixed with U-shaped baffles 17. The tightening studs 19 are fitted on the U-shaped baffles 17.

[0015] As a preferred technical solution of this utility model, the heat dissipation part includes a mounting hole 41 and a blower 42. The middle of the V-shaped plate 4 is horizontal, and the mounting hole 41 is opened in the horizontal part. A frame is fixed in the mounting hole 41, and the blower 42 is installed on the frame. The blower 42 is powered by a storage battery and controlled by a separate remote control switch.

[0016] As a preferred technical solution of this utility model, an arc frame 5 is fixed on the horizontal part of the V-shaped plate 4, and the arc frame 5 is connected to the mounting hole 41.

[0017] As a preferred technical solution of this utility model, the outer side of the knob 8 is provided with anti-slip grooves, and the I-shaped plate 16 is provided with several through slots 18.

[0018] As a preferred technical solution of this utility model, a shaft is fixed on the rear side of the U-shaped rod 10, and a roller 101 is rotatably mounted on the shaft. The roller 101 contacts the upper surface of the fixing frame 1 to support the rear side of the U-shaped rod 10.

[0019] The working principle of this utility model is as follows: In use, the L-shaped fixing plate is fixed to the worktable using fixing bolts, completing the overall positioning of the fixture. Then, the circuit board to be surface-mounted is placed on the I-beam, with its sides initially limited by the U-shaped baffles at the front and rear ends. Rotating the clamping studs on the U-shaped baffles causes their ends to press against the edge of the circuit board, thus achieving reliable clamping and fixing of the circuit board. When surface-mount soldering is required at a specific location on the circuit board, since the positions of the solder head and the heat sink are fixed, the position of the circuit board needs to be adjusted to ensure the solder point is precisely aligned with the top of the heat sink. Specifically, rotating the knob drives the horizontal stud to rotate. Because the lower end of the mounting rod is threaded into the horizontal stud, the rotation of the knob drives the entire mounting rod, U-shaped rod, and all components on it to move left and right along the mounting groove, thereby adjusting the lateral position of the clamped circuit board. The remote control starts the stepper motor, driving the lead screw to rotate. The fitting ring, which mates with the lead screw thread, drives the movable sleeve, vertical column, I-beam plate, and circuit board connected to it via the board body to move back and forth along the U-shaped rod, achieving fine-tuning of the circuit board's longitudinal position. Through this combination of manual and electric adjustment, any point on the circuit board to be soldered can be quickly and accurately moved directly below the solder head and above the heat dissipation section on the V-shaped plate. While the surface mount soldering machine is performing soldering operations, a separate blower fan can be activated via remote control. Airflow is concentrated through the mounting holes and the arc frame, directed towards the just-soldered area for targeted forced cooling, effectively preventing damage to components and solder joints due to overheating, thus ensuring the quality and efficiency of surface mount processing.

[0020] Components not described in detail in this article are existing technologies.

[0021] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A circuit board surface mount auxiliary fixture, characterized in that: The system includes a fixed frame (1), an L-shaped fixed plate (2), fixed bolts (3), a V-shaped plate (4), a heat dissipation part, a mounting groove (6), a horizontal stud (7), a knob (8), a mounting rod (9), a U-shaped rod (10), a stepper motor (11), a lead screw (12), a mounting ring (13), a movable sleeve (14), a vertical column (15), an I-shaped plate (16), a U-shaped baffle (17), and a tightening stud (19). The fixed frame (1) has an L-shaped fixed plate (2) integrally formed at its four bottom corners. The horizontal part of the L-shaped fixed plate (2) is fixed in position by the fixed bolts (3) and pre-drilled screw holes on the worktable. A V-shaped plate (4) is fixed in the fixed frame (1), and a heat dissipation part is provided on the V-shaped plate (4). A mounting groove (6) is opened at the front of the fixed frame (1), and the right end of the horizontal stud (7) rotates with the inner wall of the right side of the mounting groove (6). The left end of the mounting rod (9) extends from the hole on the left side wall of the mounting groove (6) and a knob (8) is fixed at the extended end; the lower end of the mounting rod (9) is fitted in the mounting groove (6) and installed with the horizontal stud (7); the upper end of the mounting rod (9) is integrally formed with a U-shaped rod (10), and a screw (12) is installed in the U-shaped rod (10) in the front and back direction. The screw (12) is driven by a stepper motor (11); the mounting ring (13) is installed with the screw (12), and the movable sleeve (14) is movably fitted with the rod part of the U-shaped rod (10) in the front and back direction. The mounting ring (13) and the movable sleeve (14) are connected by a plate, and the plate is fixedly connected to the I-shaped plate (16) by a vertical column (15); the front and rear ends of the upper surface of the I-shaped plate (16) are fixed with U-shaped baffles (17); the U-shaped baffles (17) are fitted with tightening studs (19).

2. The circuit board surface mount auxiliary fixture according to claim 1, characterized in that: The heat dissipation part includes a mounting hole (41) and a blower (42); the middle of the V-shaped plate (4) is horizontal, and the mounting hole (41) is opened in the horizontal part. A frame is fixed in the mounting hole (41), and a blower (42) is installed on the frame. The blower (42) is powered by a battery and controlled by a separate remote control switch.

3. The circuit board mounting auxiliary fixture according to claim 2, characterized in that: A circular arc frame (5) is fixed on the horizontal part of the V-shaped plate (4), and the circular arc frame (5) is connected to the mounting hole (41).

4. The circuit board mounting auxiliary fixture according to claim 1, characterized in that: The outer side of the knob (8) is provided with anti-slip grooves.

5. The circuit board surface mount auxiliary fixture according to claim 1, characterized in that: The I-shaped plate (16) has several through slots (18) distributed on it.

6. The circuit board surface mount auxiliary fixture according to claim 1, characterized in that: The rear side of the U-shaped rod (10) is fixed with a shaft, and a roller (101) is rotatably mounted on the shaft. The roller (101) contacts the upper surface of the fixed frame (1) to support the rear side of the U-shaped rod (10).

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