Auxiliary jig for electronic control unit (ECU) printed circuit board

Abstract

The utility model relates to the technical field of electronic equipment manufacturing, in particular to an auxiliary jig for an ECU (Electronic Control Unit) printed circuit board, and solves the problems that the positions of a front air knife and a rear air knife of the existing auxiliary jig for the ECU printed circuit board in the prior art are relatively fixed, and the distance and the overall position of the front air knife and the rear air knife cannot be flexibly adjusted. An ECU printed circuit board auxiliary jig comprises a bottom plate and a rail connected to the center of the top of the bottom plate, and the top of the rail is slidably connected with a placement plate; moving plates are slidably connected to the two sides of the top of the bottom plate, lifting air cylinders are arranged on the tops of the moving plates, the output ends of the lifting air cylinders are connected with rotating bases, and air knives are rotationally connected into the rotating bases. Through the cooperation of the moving plate and the lifting air cylinder, flexible adjustment of the positions of the air knives is achieved, the problem that the distance between the air knives and the overall position are fixed is solved, and the adaptability and the machining flexibility of the jig are improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment manufacturing technology, and in particular to an auxiliary fixture for ECU printed circuit boards. Background Technology

[0002] The ECU (Electronic Control Unit) printed circuit board is the core component of electronic control units, widely used in automobiles, industrial control, and various electronic devices. As a key link in the control logic and signal processing of the equipment, its processing quality and precision have a decisive impact on the overall performance and stability of the equipment. During the processing of ECU printed circuit boards, the use of auxiliary fixtures is crucial to ensuring processing efficiency and quality.

[0003] Especially in the core process of lead-free solder plating, existing auxiliary fixtures for ECU printed circuit boards, such as the one disclosed in utility model patent CN 215121346 U, include a guide rail, a front air knife, and a rear air knife. Through a specific structural design, they ensure the distance between the rear air knife and the guide rail, thereby improving the quality of lead-free solder plating to a certain extent. However, in practical applications, this auxiliary fixture has gradually revealed obvious limitations.

[0004] Specifically, existing ECU printed circuit board auxiliary fixtures have relatively fixed positions for the front and rear air blades, and their spacing and overall position cannot be flexibly adjusted. This deficiency prevents the fixture from being adaptable to the processing of circuit boards of different sizes, greatly limiting its versatility and flexibility. When processing circuit boards of different specifications, operators may need to change different fixtures or make cumbersome adjustments, which not only increases the complexity of the operation but also reduces processing efficiency. More seriously, because the fixture cannot adapt to circuit boards of different sizes, it may lead to inaccurate positioning during processing, which in turn affects the uniformity and quality of solder plating, ultimately posing a potential risk to the overall performance and reliability of the ECU printed circuit board.

[0005] Therefore, to address the shortcomings of existing technologies, we urgently need an auxiliary fixture for ECU printed circuit boards. This new auxiliary fixture should be flexibly adjustable to accommodate the processing of circuit boards with different size requirements, while maintaining or improving the quality and efficiency of lead-free solder plating, providing strong support for the ECU printed circuit board processing industry. Utility Model Content

[0006] The purpose of this invention is to provide an auxiliary fixture for ECU printed circuit boards, which solves the problem that the positions of the front and rear air blades in existing ECU printed circuit board auxiliary fixtures are relatively fixed, and their spacing and overall position cannot be flexibly adjusted.

[0007] To achieve the above objectives, this utility model provides an auxiliary fixture for ECU printed circuit boards, including a base plate and a track connected to the top center of the base plate, wherein a placement plate is slidably connected to the top of the track;

[0008] The base plate is slidably connected to both sides of the top, and a lifting cylinder is provided on the top of the moving plate. The output end of the lifting cylinder is connected to a rotating seat, and an air knife is rotatably connected inside the rotating seat.

[0009] The lifting cylinder is slidably connected to the top of the moving plate, and a positioning structure that is detachably connected to the top of the moving plate is connected to one side of the lifting cylinder.

[0010] Both sides of the air knife are connected to the inner wall of the rotating seat through damping shafts, and the output end of the lifting cylinder is fixedly connected to a mounting plate that is bolted to the bottom of the rotating seat.

[0011] The top of the movable plate is provided with a movable groove, and the bottom of the lifting cylinder is connected to a movable block that slides in cooperation with the movable groove.

[0012] The movable plate has two symmetrical mounting seats at one end. The mounting seats are rotatably connected to rollers. One end of the mounting seat is connected to the end of the movable plate through an inclined connecting rod. The outer ring of the roller is in contact with the side wall of the track.

[0013] The base plate has grooves on both sides of its top, and the bottom of the movable plate is connected to a slider that matches the grooves.

[0014] The positioning structure includes a side plate connected to one side of the moving block. A positioning rod with one end sliding through the side plate is provided on the top side of the side plate. The top of the moving groove is provided with a number of positioning holes that are adapted to the positioning rod.

[0015] This utility model discloses an auxiliary fixture for ECU printed circuit boards. Through a sliding connection design between a movable plate and the top of a base plate, and a sliding connection between a lifting cylinder and the movable plate, the position and height of the air knife can be flexibly adjusted. This allows the fixture to adapt to the processing needs of circuit boards of different sizes and shapes without requiring fixture replacement or cumbersome adjustments, greatly improving the fixture's versatility and flexibility.

[0016] Improving processing efficiency and quality: The air knife, through the rotation function of the rotating base, can adjust its blowing angle to ensure that the molten solder is evenly covered on the circuit board. This flexible air knife adjustment mechanism, combined with the sliding function of the placement board on the track, enables the circuit board to maintain stable and accurate positioning during processing, thereby improving the quality and efficiency of lead-free soldering. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of the structure of an embodiment of the present utility model.

[0021] Figure 4 This is a schematic diagram of the structure of an embodiment of the present utility model.

[0022] Figure 5 This is a schematic diagram of the structure of an embodiment of the present utility model.

[0023] In the diagram: 1. Moving plate; 2. Air knife; 3. Base plate; 4. Track; 5. Slide groove; 6. Placement plate; 7. Moving groove; 8. Positioning hole; 9. Slider; 10. Connecting rod; 11. Mounting base; 12. Roller; 13. Positioning rod; 14. Side plate; 15. Lifting cylinder; 16. Rotating groove; 17. Rotating seat. Detailed Implementation

[0024] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0025] Example 1

[0026] Please see Figure 1-5 As shown, an auxiliary fixture for ECU printed circuit boards in this embodiment includes a base plate 3 and a track 4 connected to the top center of the base plate 3. A placement plate 6 is slidably connected to the top of the track 4.

[0027] The top two sides of the base plate 3 are slidably connected to the movable plate 1. The top of the movable plate 1 is provided with a lifting cylinder 15. The output end of the lifting cylinder 15 is connected to the rotating seat 17. The air knife 2 is rotatably connected inside the rotating seat 17.

[0028] The lifting cylinder 15 is slidably connected to the top of the moving plate 1, and a positioning structure that is detachably connected to the top of the moving plate 1 is connected to one side of the lifting cylinder 15.

[0029] First, the ECU printed circuit board to be processed is placed on the placement plate 6. The placement plate 6 is slidably connected to the top of the track 4, which facilitates the adjustment of the circuit board's position according to processing requirements. The base plate 3 serves as the basic support structure of the entire fixture, stably supporting the track 4 and the placement plate 6.

[0030] Next, the positions of the two movable plates 1 are adjusted according to the size and processing requirements of the circuit board. The movable plates 1 are slidably connected to the top of the base plate 3, and their positions can be easily adjusted manually or mechanically to accommodate circuit boards of different widths. After adjustment, the movable plates 1 are fixed to the base plate 3 using a positioning structure to ensure stability during processing.

[0031] Then, the lifting cylinder 15 is activated. The lifting cylinder 15 is slidably connected to the top of the moving plate 1, and the rotating seat 17 connected to its output end begins to rise. An air knife 2 is rotatably connected inside the rotating seat 17. As the lifting cylinder 15 rises, the air knife 2 approaches the circuit board, preparing for blowing or cleaning before lead-free soldering. Due to the sliding connection design between the lifting cylinder 15 and the moving plate 1, the height of the air knife 2 can also be adjusted according to actual needs, further improving the flexibility of the fixture.

[0032] During lead-free soldering, the air knife 2 can adjust its blowing angle via the rotation function of the rotating base 17, ensuring that the molten solder is evenly covered on the circuit board while preventing molten solder from splashing or accumulating. This flexible air knife adjustment mechanism, combined with the position adjustment function of the moving plate 1, allows the fixture to adapt to the processing needs of circuit boards of different sizes and shapes.

[0033] After processing is completed, the lifting cylinder 15 descends, the air knife 2 moves away from the circuit board, and the placement plate 6 can slide along the track 4 to remove the processed circuit board, ready for the next round of processing.

[0034] Example 2

[0035] Please see Figure 1-5 As shown in this embodiment, an auxiliary fixture for ECU printed circuit boards has an air knife 2 connected to the inner wall of a rotating base 17 on both sides via damping shafts. A mounting plate, bolted to the bottom of the rotating base 17, is fixedly connected to the output end of a lifting cylinder 15. Specifically, the air knife 2 is connected to the inner wall of the rotating base 17 on both sides via damping shafts, and the mounting plate, bolted to the bottom of the rotating base 17, is fixedly connected to the output end of the lifting cylinder 15. The working process is as follows: the air knife 2 rises or falls under the drive of the lifting cylinder 15, and its angle can be finely adjusted within the rotating base 17 via the damping shafts. This achieves the effect of stable lifting and lowering of the air knife 2 while flexibly adjusting the blowing angle, ensuring uniform coverage of the circuit board with solder and improving the quality of lead-free solder plating.

[0036] Two mounting seats 11 are symmetrically arranged at one end of the movable plate 1. Rollers 12 are rotatably connected inside the mounting seats 11. One end of the mounting seat 11 is connected to the end of the movable plate 1 via an inclined connecting rod 10. The outer ring of the roller 12 is in contact with the side wall of the track 4. Specifically, the working process is as follows: when the movable plate 1 slides on the base plate 3, the roller 12 rolls along the side wall of the track 4, reducing frictional resistance. This achieves smoother sliding and more accurate positioning of the movable plate 1, improving the ease of use and machining accuracy of the fixture.

[0037] Example 3

[0038] Please see Figure 1-5 As shown in this embodiment, an auxiliary fixture for ECU printed circuit boards has a movable plate 1 with a movable groove 7 on its top. A movable block that slides and engages with the movable groove 7 is connected to the bottom of a lifting cylinder 15. Specifically, by providing the movable groove 7 on the top of the movable plate 1 and the movable block that slides and engages with the movable groove 7 on the bottom of the lifting cylinder 15, the working process is as follows: the lifting cylinder 15 can slide within the movable groove 7 via the movable block, thereby adjusting its position on the movable plate 1. This achieves the effect of flexible adjustment of the positions of the lifting cylinder 15 and the air knife 2, adapting to the processing requirements of circuit boards of different sizes and improving the versatility of the fixture.

[0039] The base plate 3 has sliding grooves 5 on both sides of its top. The bottom of the movable plate 1 is connected to a slider 9 that matches the sliding grooves 5. Specifically, with the sliding grooves 5 on both sides of the top of the base plate 3 and the slider 9 connected to the bottom of the movable plate 1, the working process is as follows: the movable plate 1 slides within the sliding grooves 5 via the slider 9, thus adjusting its position. This achieves a more stable and reliable position adjustment for the movable plate 1, ensuring the structural stability of the fixture during processing.

[0040] The positioning structure includes a side plate 14 connected to one side of the moving block. A positioning rod 13, with one end sliding through the side plate 14, is provided on the top side of the side plate 14. Several positioning holes 8, adapted to the positioning rod 13, are provided on the top of the moving groove 7. Specifically, the positioning structure includes a side plate 14 connected to one side of the moving block, a positioning rod 13, with one end sliding through the side plate 14, and several positioning holes 8, adapted to the positioning rod 13, are provided on the top of the moving groove 7. The workflow is as follows: after adjusting the position of the moving plate 1, the positioning rod 13 is inserted into the corresponding positioning hole 8 to fix the position of the moving plate 1. This achieves a more secure fixation of the moving plate 1 and simplifies operation, improving the stability and safety of the fixture during processing.

[0041] This solution includes the following workflow:

[0042] The overall structure includes a base plate 3 and a track 4 connected to the top center of the base plate 3. A placement plate 6 is slidably connected to the top of the track 4. The base plate 3 serves as the basic support structure for the entire fixture, stably supporting the track 4 and the placement plate 6. First, the ECU printed circuit board to be processed is placed on the placement plate 6. The placement plate 6 can slide along the top of the track 4, making it easy to adjust the position of the circuit board according to processing requirements.

[0043] Next, the positions of the two movable plates 1 are adjusted according to the size and processing requirements of the circuit board. A slider 9, which matches the top groove 5 of the base plate 3, is connected to the bottom of the movable plate 1. The slider 9 slides within the groove 5, achieving stable adjustment of the movable plate 1's position. To further reduce frictional resistance, two mounting seats 11 are symmetrically arranged at one end of the movable plate 1. Rollers 12 are rotatably connected inside the mounting seats 11, and the outer rings of the rollers 12 are in contact with the sidewall of the track 4. When the movable plate 1 slides on the base plate 3, the rollers 12 roll along the sidewall of the track 4, making the sliding of the movable plate 1 smoother and the positioning more accurate.

[0044] The top of the movable plate 1 has a movable groove 7, and the bottom of the lifting cylinder 15 is connected to a movable block that slides in conjunction with the movable groove 7. The lifting cylinder 15 can slide within the movable groove 7 via the movable block, thereby adjusting its position on the movable plate 1 to accommodate the processing requirements of circuit boards of different sizes. A mounting plate is fixedly connected to the output end of the lifting cylinder 15, and the mounting plate is fixedly connected to the bottom of the rotating seat 17 by bolts. An air knife 2 is rotatably connected inside the rotating seat 17, and both sides of the air knife 2 are connected to the inner wall of the rotating seat 17 via damping shafts. After the lifting cylinder 15 is activated, the rotating seat 17 connected to its output end begins to rise, and the air knife 2 approaches the circuit board as the lifting cylinder 15 rises. At the same time, the angle of the air knife 2 can be finely adjusted within the rotating seat 17 via the damping shafts to prepare for blowing or cleaning work before lead-free soldering.

[0045] During lead-free solder plating, the air knife 2 can flexibly adjust its blowing angle through the rotation function of the rotating base 17, ensuring that the molten solder is evenly covered on the circuit board while preventing molten solder from splashing or accumulating. This flexible air knife adjustment mechanism, combined with the position adjustment function of the moving plate 1, allows the fixture to adapt to the processing needs of circuit boards of different sizes and shapes.

[0046] After processing, the lifting cylinder 15 descends, and the air knife 2 moves away from the circuit board. At this time, the positioning rod 13 can be inserted into the corresponding positioning hole 8 to fix the position of the moving plate 1. The positioning structure includes a side plate 14 connected to one side of the moving block. A positioning rod 13 with one end sliding through the side plate 14 is provided on the top side of the side plate 14. Several positioning holes 8 that are adapted to the positioning rod 13 are opened on the top of the moving groove 7. Through the cooperation of the positioning rod 13 and the positioning holes 8, the position of the moving plate 1 is more firmly fixed and the operation is simpler. Finally, the placement plate 6 can slide along the track 4 to remove the processed circuit board, ready for the next round of processing.

[0047] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An auxiliary fixture for ECU printed circuit boards, characterized in that, include: A base plate and a track connected to the top center of the base plate, wherein a placement plate is slidably connected to the top of the track; The base plate is slidably connected to both sides of the top, and a lifting cylinder is provided on the top of the moving plate. The output end of the lifting cylinder is connected to a rotating seat, and an air knife is rotatably connected inside the rotating seat. The lifting cylinder is slidably connected to the top of the moving plate, and a positioning structure that is detachably connected to the top of the moving plate is connected to one side of the lifting cylinder.

2. The auxiliary fixture for ECU printed circuit boards according to claim 1, characterized in that, Both sides of the air knife are connected to the inner wall of the rotating seat through damping shafts, and the output end of the lifting cylinder is fixedly connected to a mounting plate that is bolted to the bottom of the rotating seat.

3. The auxiliary fixture for ECU printed circuit boards according to claim 1, characterized in that, The top of the movable plate is provided with a movable groove, and the bottom of the lifting cylinder is connected to a movable block that slides in cooperation with the movable groove.

4. The auxiliary fixture for ECU printed circuit boards according to claim 2, characterized in that, Two mounting seats are symmetrically arranged at one end of the movable plate. Rollers are rotatably connected inside the mounting seats. One end of the mounting seat is connected to the end of the movable plate through an inclined connecting rod. The outer ring of the roller is in contact with the side wall of the track.

5. An auxiliary fixture for ECU printed circuit boards according to claim 3, characterized in that, The bottom plate has sliding grooves on both sides of its top, and the bottom of the movable plate is connected to a slider that matches the sliding groove.

6. An auxiliary fixture for ECU printed circuit boards according to claim 5, characterized in that, The positioning structure includes a side plate connected to one side of the moving block. A positioning rod with one end sliding through the side plate is provided on the top side of the side plate. Several positioning holes adapted to the positioning rod are opened on the top of the moving groove.

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