A line board drilling processing auxiliary fixture

Abstract

This invention belongs to the field of integrated circuit manufacturing technology and relates to an auxiliary fixture for drilling circuit boards. It includes circumferentially distributed sliders, each slider being fixedly connected to a telescopic sleeve, which in turn is fixedly connected to a sliding clamping block. A first elastic element is fixedly connected between the slider and the adjacent sliding clamping block. An electrically controlled push rod is installed inside the slider, and a base is provided on the side of the slider. This invention uses the first elastic element to flexibly support the sliding clamping block, reducing the probability of the circuit board being squeezed and damaged when it is displaced under force during drilling. After drilling is completed, the telescopic part of the electrically controlled push rod is used to align the sliding clamping block, thereby resetting and aligning the circuit board. This reduces the probability of damage to the circuit board under pressure and also reduces the probability of the circuit board being misaligned, thus ensuring the accuracy of drilling and ultimately guaranteeing the quality of the manufactured circuit board.

Description

Technical Field

[0001] This invention relates to the field of integrated circuit manufacturing technology, and in particular to an auxiliary fixture for drilling circuit boards. Background Technology

[0002] As a core component of modern electronic devices, the precision of the drilling process of printed circuit boards (PCBs) directly determines the accuracy of component placement and circuit connections. During the drilling process, the PCB needs to be stably clamped on the processing platform to prevent displacement of the PCB and its holes caused by vibrations generated by the high-speed rotation and downward pressure of the drill bit. In existing technologies, flexible fixing methods such as tape are generally used to fix the PCB. Although this fixing method can absorb the force generated by the movement of the PCB, once the PCB is displaced, it will cause subsequent drilling deviation, thus affecting the quality of the PCB after drilling. If a rigid clamp is used to clamp the PCB, although it can provide strong clamping force and reduce the probability of PCB damage, the force on the PCB cannot be released, which will cause direct damage to the PCB, thus affecting the quality of the PCB after drilling. Summary of the Invention

[0003] In order to overcome the shortcomings mentioned in the background art, the present invention provides an auxiliary fixture for drilling circuit boards.

[0004] The technical solution of the present invention is as follows: an auxiliary fixture for drilling circuit boards, comprising circumferentially distributed sliders, a telescopic sleeve fixedly connected to the sliders, a sliding clamping block fixedly connected to the telescopic sleeve, a first elastic element fixedly connected between the sliders and adjacent sliding clamping blocks, an electrically controlled push rod installed inside the sliders, the telescopic part of the electrically controlled push rod being used to press adjacent sliding clamping blocks to move, so that the sliding clamping blocks press against the edge of the circuit board, a base being provided on the side of the sliders, a sliding plate being slidably connected to the base, a flexible rod being fixedly connected to the sliding clamping block, and the flexible rod being slidably connected to the sliding plate.

[0005] Preferably, the sliding clamp is fixedly connected to a pressing plate, which is used to press the adjacent sliding plates to move.

[0006] Preferably, the sliding resistance of the sliding plate on the adjacent base is greater than the sliding resistance of the flexible rod on the adjacent sliding plate.

[0007] Preferably, the sliding clamp is slidably connected to a trigger rod, and a second elastic element is fixedly connected between the trigger rod and the adjacent sliding clamp. The trigger rod is fixedly connected to symmetrically distributed sliding pins, and the slider is provided with symmetrically distributed sliding grooves. The sliding pins slide within the adjacent sliding grooves.

[0008] Preferably, the lower side of the sliding clamp is roughened to increase the resistance encountered when the sliding clamp slides.

[0009] Preferably, the sliding clamp is slidably connected to a sliding pressure frame, the sliding clamp is threadedly connected to a threaded rod, the threaded rod is rotatably connected to an elastic plate, the threaded rod is located in the middle of adjacent elastic plates, and the elastic plate is used to compress the sliding pressure frame.

[0010] Preferably, the sliding pressure frame is rotatably connected to spaced rotating rollers.

[0011] Preferably, the sliding pressure frame is provided with a guide portion, which gradually curves upward from the point near the adjacent sliding clamp block to the point away from it.

[0012] Preferably, each of the two opposing sliding clamps in all the sliding clamps is provided with a sliding rod on its opposite side. The sliding rod is slidably connected to the adjacent base, and the opposite sides of the two sliding rods are fixed with linearly distributed support rods.

[0013] Preferably, the support rod is cylindrical, and all the support rods on different sliding rods are alternately staggered.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention uses a first elastic element to flexibly support the sliding clamping block, thereby reducing the probability of the circuit board being squeezed and damaged when it is displaced under force during drilling. After the circuit board is drilled, the sliding clamping block is aligned using the telescopic part of the electronically controlled push rod, thereby resetting and aligning the circuit board. This reduces the probability of the circuit board being damaged by pressure, and also reduces the probability of the circuit board being misaligned, thus ensuring the accuracy of the drilling and the quality of the circuit board after production. By sliding the sliding rod, the position of all support rods can be adjusted, changing the position of the support rods supporting the circuit board to adapt to drilling different types of circuit boards. Furthermore, by using the support rods to support the circuit board, the position of the required drilling position on the circuit board is suspended, reducing the supported area of ​​the circuit board, ensuring that the hole on the circuit board is drilled through, and reducing the probability of debris accumulation between the bottom of the circuit board and its supporting structure, ensuring the flatness of the circuit board during drilling, and thus improving the drilling effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the slider of the present invention; Figure 3 This is a three-dimensional structural diagram of the sliding clamping block of the present invention; Figure 4This is a three-dimensional structural diagram of the base, sliding plate, and flexible rod of the present invention; Figure 5 This is a three-dimensional structural diagram of the sliding pressure frame of the present invention; Figure 6 This is a three-dimensional structural diagram of the elastic sheet of the present invention.

[0016] Wherein: 1-slider, 2-telescopic sleeve, 3-sliding clamp, 4-first elastic element, 5-electrically controlled push rod, 6-base, 7-sliding plate, 8-flexible rod, 9-pressing plate, 10-trigger rod, 11-second elastic element, 12-sliding pin, 13-sliding groove, 14-sliding pressure frame, 1401-rotating roller, 17-elastic sheet, 18-threaded rod, 19-guide part, 20-sliding rod, 21-support rod. Detailed Implementation

[0017] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0018] In existing technologies, flexible fixing methods such as tape are generally used to fix circuit boards. Although this fixing method can absorb the force generated by the movement of the circuit board, once the circuit board is displaced, it will cause the subsequent drilling of the circuit board to be skewed, thus affecting the quality of the drilling.

[0019] Example 1: An auxiliary fixture for drilling circuit boards, such as Figures 1-4As shown, the circuit board includes four circumferentially distributed sliders 1, located around the perimeter. Each slider 1 has a control terminal (not shown in the figure). A telescopic sleeve 2 is fixedly connected to each slider 1, and a sliding clamp 3 is fixedly connected to each telescopic sleeve 2. A first elastic element 4, a compression spring, is fixedly connected between each slider 1 and the adjacent sliding clamp 3. When clamping the circuit board, the first elastic element 4 is compressed, and the sliding clamp 3 presses against the corresponding edge of the circuit board. An electrically controlled push rod 5 is installed inside each slider 1 and is electrically connected to the control terminal. When drilling holes in the circuit board, the telescopic part of the electric push rod 5 is retracted. After a hole is drilled, the telescopic part of the electric push rod 5 extends, pressing against the adjacent sliding clamp 3 to move it and press against the edge of the circuit board. The sliding clamp 3 is pressed by the first elastic element 4. After drilling, the sliding clamp 3 is pressed by the telescopic part of the electric control push rod 5. Taking the slider 1 on the left as an example, the slider 1 is provided with a base 6 in the front and back directions. The base 6 is slidably connected to the sliding plate 7. The sliding clamp 3 is fixedly connected to the flexible rod 8. The flexible rod 8 is slidably connected to the sliding plate 7. When the sliding clamp 3 is pressed, the flexible rod 8 slides relative to the sliding plate 7. A pressure sensor can be set on the flexible rod 8. When the flexible rod 8 moves (i.e. the circuit board squeezes the sliding clamp 3, causing the flexible rod 8 to move), the squeezing force between the pressure sensor and the sliding plate 7 changes. At this time, the pressure sensor triggers the electric control push rod 5 through the control terminal. The telescopic part of the electric control push rod 5 extends and squeezes the adjacent sliding clamp 3, so as to straighten the circuit board through the adjacent sliding clamp 3.

[0020] like Figure 3 and Figure 4 As shown, the sliding clamping block 3 is fixedly connected to the pressing plate 9. The pressing plate 9 is used to press the adjacent sliding plate 7 to move towards the circuit board. When the sliding clamping block 3 is pressed and the pressing plate 9 moves away from the circuit board, the pressing plate 9 no longer drives the sliding plate 7 to move. The sliding resistance of the sliding plate 7 on the adjacent base 6 is greater than the sliding resistance of the flexible rod 8 on the adjacent sliding plate 7. Taking the left flexible rod 8 as an example, when the flexible rod 8 slides to the left relative to the sliding plate 7 (initially, the flexible rod 8 is stuck into the sliding plate 7 by its own deformation), the sliding plate 7 is affected by the sliding resistance and cannot move relative to the base 6.

[0021] like Figures 3-5As shown, the sliding clamp 3 is slidably connected to a trigger rod 10. A second elastic element 11 is fixed between the trigger rod 10 and the adjacent sliding clamp 3. The second elastic element 11 is a tension spring. Taking the trigger rod 10 on the left as an example, the trigger rod 10 is fixedly connected to two sliding pins 12 that are symmetrically distributed front and back. The slider 1 is provided with two sliding grooves 13 that are symmetrically distributed front and back. The sliding grooves 13 are L-shaped. When the sliding pin 12 is located at the end of the sliding groove 13 away from the sliding clamp 3, the first elastic element 4 is in a compressed state and the second elastic element 11 is not stretched. When the sliding pin 12 is located at the end of the sliding groove 13 close to the sliding clamp 3, the trigger rod 10 is moved upward, the second elastic element 11 is stretched, and the sliding pin 12 slides in the adjacent sliding groove 13. The lower side of the sliding clamp 3 is a rough surface to increase the resistance encountered by the sliding clamp 3 when it slides.

[0022] The specific working principle is as follows: When the operator needs to use this device to clamp the circuit board, the operator installs the four sliders 1 and their parts around the processing position of the circuit board. At this time, the sliding pin 12 is located on the sliding groove 13 at the end away from the sliding clamp 3. Then the operator moves the trigger rod 10 upward, so that the second elastic element 11 is stretched, the first elastic element 4 pops out and drives the sliding clamp 3 to move, the telescopic sleeve 2 is stretched, and the four sliding clamps 3 clamp the circuit board.

[0023] During the process of moving the sliding clamp 3 to clamp the circuit board, the sliding clamp 3 drives the pressing plate 9 to move. The pressing plate 9 presses the sliding plate 7 to move to the right to adjust the position of the sliding plate 7, thereby adapting to the position of circuit boards of different sizes.

[0024] After the circuit board is clamped by the four sliding clamps 3, the operator drills holes in the circuit board. During the drilling process, the first elastic element 4 supports the sliding clamps 3, and the sliding clamps 3 clamp the edges of the circuit board. After drilling a hole, if the circuit board shifts after drilling, the circuit board will push the sliding clamps 3 to move (during the process of the circuit board shifting and pushing the sliding clamps 3 to move, the sliding clamps 3 move and drive the flexible rod 8 to move; taking the left sliding plate 7 as an example, the flexible rod 8 moves to the left relative to the sliding plate 7, and the flexible rod 8 deforms to increase the resistance of the sliding clamps 3 and increase the clamping force of the sliding clamps 3 on the circuit board). The operator activates the electrically controlled push rod 5 through the control terminal. The telescopic part of the push rod 5 extends and presses the sliding clamp 3 to move, thereby aligning the circuit board. Then, the telescopic part of the electrically controlled push rod 5 retracts and resets, and the sliding clamp 3 is flexibly supported by the first elastic element 4 to reduce the probability of the circuit board being squeezed and damaged when it is displaced by force during drilling. When the flexible rod 8 slides relative to the sliding plate 7 (i.e. when the circuit board is tilted), the telescopic part of the electrically controlled push rod 5 is used to align the sliding clamp 3, thereby resetting and aligning the circuit board. This reduces the probability of the circuit board being damaged by pressure and also reduces the probability of the circuit board being tilted, thus ensuring the accuracy of the circuit board drilling and the quality of the circuit board after production.

[0025] After all the holes on the circuit board are drilled, the operator moves the trigger rod 10 to reset, the second elastic element 11 springs back to reset, the trigger rod 10 moves the sliding clamp 3 to reset, so that the telescopic sleeve 2 and the first elastic element 4 are compressed, the operator collects the circuit board, and then turns off the electric control push rod 5 through the control terminal.

[0026] The edges of existing circuit boards are clamped together with tape. If displacement occurs during the drilling process, the tape will loosen, which will cause the circuit board to become loose and thus affect the stability of the circuit board during the drilling process.

[0027] Example 2: Based on Example 1 above, as follows Figures 4-6As shown, the sliding clamp 3 is slidably connected to a sliding pressure frame 14. The sliding pressure frame 14 is used to press the circuit board to reduce the probability of displacement of the circuit board during drilling. The sliding clamp 3 is threadedly connected to a threaded rod 18, and the threaded rod 18 is rotatably connected to an elastic sheet 17. The elastic sheet 17 gradually bends downward from the middle to both sides. The threaded rod 18 is located in the middle of adjacent elastic sheets 17. The elastic sheet 17 is used to press the sliding pressure frame 14. The sliding pressure frame 14 is rotatably connected to spaced rotating rollers 1401. When the circuit board moves, the rotating rollers 1401 rotate to reduce displacement. The sliding pressure frame 14 is equipped with a guide 19, which gradually bends upward from the adjacent sliding clamp 3 to the farthest point, so as to facilitate the insertion of the circuit board under the guide 19. After the circuit board is pressed under the sliding pressure frame 14, the operator rotates the threaded rod 18. The threaded rod 18 presses the middle of the elastic plate 17 downward, and the elastic plate 17 deforms and presses the sliding pressure frame 14 downward, so as to press the circuit boards of different models and improve the applicability of this device.

[0028] The existing circuit board bottom support workbench is large, and a lot of impurities will accumulate between the circuit board and the workbench, resulting in uneven placement of the circuit board. Furthermore, this makes it difficult to completely drill through the holes of different models of circuit boards, resulting in a large number of burrs accumulating on the lower edge of the drilled holes, which in turn affects the quality of the circuit board after drilling.

[0029] Example 3: Based on Example 2 above, as follows Figure 2 As shown, each of the two sliding clamps 3 has a sliding rod 20 on its opposite side. The sliding rod 20 is slidably connected to the adjacent base 6. A linearly distributed support rod 21 is fixed to the opposite side of each sliding rod 20. The support rod 21 supports the lower side of the circuit board, suspending the area where drilling is required, thus ensuring the hole can be drilled through. By sliding the sliding rod 20, the position of all the support rods 21 can be adjusted, changing the position of the support rods 21 supporting the circuit board. The support rod 21 is cylindrical. All the support rods 21 on the different sliding rods 20 are staggered and distributed alternately, which reduces the supported area of ​​the circuit board and reduces the probability of debris (drilling debris) accumulating between the bottom of the circuit board and its supporting structure, ensuring the flatness of the circuit board during drilling, and thus improving the drilling effect. A power component can be set on the sliding rod 20 to control the sliding rod 20 to slide automatically. During the drilling process of the circuit board, the position of the sliding rod 20 is automatically adjusted, thereby automatically adjusting the position of all the support rods 21 during the drilling process of the circuit board.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An auxiliary fixture for drilling circuit boards, characterized in that, The circuit includes a circumferentially distributed slider (1), a telescopic sleeve (2) fixedly connected to the slider (1), a sliding clamp (3) fixedly connected to the telescopic sleeve (2), a first elastic element (4) fixedly connected between the slider (1) and the adjacent sliding clamp (3), an electrically controlled push rod (5) installed inside the slider (1), the telescopic part of the electrically controlled push rod (5) is used to squeeze the adjacent sliding clamp (3) to move, so that the sliding clamp (3) presses the edge of the circuit board, a base (6) is provided on the side of the slider (1), a sliding plate (7) is slidably connected to the base (6), a flexible rod (8) is fixedly connected to the sliding clamp (3), and the flexible rod (8) is slidably connected to the sliding plate (7); The sliding clamp (3) is slidably connected to a trigger rod (10), and a second elastic element (11) is fixed between the trigger rod (10) and the adjacent sliding clamp (3). The trigger rod (10) is fixedly connected to symmetrically distributed sliding pins (12), and the slider (1) is provided with symmetrically distributed sliding grooves (13). The sliding pins (12) slide in the adjacent sliding grooves (13). The lower side of the sliding clamp (3) is rough to increase the resistance encountered when the sliding clamp (3) slides. The sliding clamp (3) is slidably connected to the sliding pressure frame (14), the sliding clamp (3) is threadedly connected to the threaded rod (18), the threaded rod (18) is rotatably connected to the elastic plate (17), the threaded rod (18) is located in the middle of the adjacent elastic plate (17), and the elastic plate (17) is used to squeeze the sliding pressure frame (14).

2. The circuit board drilling auxiliary fixture according to claim 1, characterized in that, The sliding clamp (3) is fixedly connected to a pressing plate (9), which is used to press the adjacent sliding plate (7) to move.

3. The circuit board drilling auxiliary fixture according to claim 2, characterized in that, The sliding resistance of the sliding plate (7) on the adjacent base (6) is greater than the sliding resistance of the flexible rod (8) on the adjacent sliding plate (7).

4. The circuit board drilling auxiliary fixture according to claim 1, characterized in that, The sliding pressure frame (14) is rotatably connected to a spaced rotating roller (1401).

5. The circuit board drilling auxiliary fixture according to claim 4, characterized in that, The sliding pressure frame (14) is provided with a guide portion (19), which gradually curves upward from the adjacent sliding clamp (3) to the distance away.

6. The circuit board drilling auxiliary fixture according to claim 5, characterized in that, All of the sliding clamps (3) have sliding rods (20) on opposite sides of the two opposite sliding clamps (3). The sliding rods (20) are slidably connected to the adjacent base (6). The opposite sides of the two sliding rods (20) are fixed with linearly distributed support rods (21).

7. The circuit board drilling auxiliary fixture according to claim 6, characterized in that, The support rod (21) is cylindrical, and all the support rods (21) on different sliding rods (20) are alternately staggered.

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