Structure for improving depth control precision of PCB
The PCB board control depth structure addresses the issue of fixed dimensions and limited flexibility by using a depth adjustment mechanism with interchangeable components, achieving precise and adaptable control of drilling depth.
Patent Information
- Application Number
- CN202421178674.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-05-28
AI Technical Summary
The data obtained by the existing deep-control structure by changing the thickness by stacking the pads is not accurate enough, and the position of the deep-control structure above the PCB board is fixed, resulting in insufficient use range and low flexibility.
The support plate and depth control adjustment components are adopted, including depth adjustment parts, transposition parts and anti-disengagement parts. Through the combination of the internal threaded barrel and the depth control external thread sleeve, combined with the design of the limit frame, support rod and clamping head, the precise adjustment of the depth control dimension and flexible adjustment of position are achieved.
It realizes precise control of depth control dimensions and flexible position adjustment, improves the scope and flexibility of the structure, and ensures the accuracy of the opening depth.
Smart Images
Figure CN223110257U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of PCB boards, and particularly relates to a structure for improving the depth control precision of PCB boards. Background Art
[0002] A PCB board is a plastic board used to support and connect electronic components, with circuit patterns printed on it. It is an essential part of modern electronic devices. It can provide electrical connections and avoid short circuits, and can also play a role in mechanical support and heat dissipation. It is usually made of insulating materials (such as glass fiber-reinforced epoxy resin), with a layer of conductive material (such as copper) covering it to form circuit connections. When a PCB board is processed, holes are drilled on its surface. In order to prevent large deviations in the hole depth from affecting the production quality, a depth control structure is used to control the hole depth.
[0003] For most existing depth control structures, the depth control dimensions are fixed and non-adjustable. In order to change the depth control dimensions, a certain number of cushion plates are added between the PCB board and the depth control structure later to change the depth control dimensions. However, the data obtained by the method of stacking cushion plates to change the thickness is not accurate enough, resulting in inaccurate depth control dimensions. Moreover, the position of the depth control structure above the PCB board is fixed, making it inconvenient to move the depth control structure to different positions for use, resulting in insufficient use range and low flexibility of the structure. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a structure for improving the depth control precision of PCB boards, which solves the problems that the data obtained by the method of stacking cushion plates to change the thickness of the existing depth control structure is not accurate enough, resulting in inaccurate depth control dimensions, and the position of the depth control structure above the PCB board is fixed, making it inconvenient to move the depth control structure to different positions for use, resulting in insufficient use range and low flexibility of the structure.
[0005] The utility model solves the above technical problems through the following technical solutions. The utility model includes:
[0006] A support plate, and the PCB board is arranged above the support plate;
[0007] A depth control adjustment component, which is arranged above the support plate. The depth control adjustment component includes a depth adjustment part, a position change part, and an anti-disengagement part. The depth adjustment part is used to change the depth control dimension, the position change part is used to change the position of the depth adjustment part, and the anti-disengagement part is used to limit the position of the position change part;
[0008] The depth adjustment part includes an internal thread cylinder and a depth control external thread sleeve, and the depth control external thread sleeve is threadedly connected to the inside of the internal thread cylinder.
[0009] Preferably, the transposition member includes two limiting frames, two support rods, a plurality of positioning springs, and a plurality of clamping heads. A plurality of clamping holes are formed in the inner sides of the two limiting frames. One end of each of the two support rods is fixed to the outer surface of the internal thread cylinder. A plurality of inner grooves are formed in each of the two support rods. The plurality of positioning springs are respectively arranged inside the plurality of inner grooves. The plurality of clamping heads are all slidably installed inside the plurality of inner grooves. One end of the clamping head penetrates through the support rod and is inserted and fixed in the corresponding clamping hole.
[0010] Preferably, the anti-detachment member includes an anti-detachment plate, a lifting buckle, a positive magnetic plate, and a negative magnetic plate. The anti-detachment plate slides inside the limiting frame. The lifting buckle is fixed above the anti-detachment plate. The positive magnetic plate is fixed below the anti-detachment plate.
[0011] Preferably, two symmetrically arranged anti-shift and distance-fixing components are installed above the support plate. The anti-shift and distance-fixing components are used to fix the positions of PCB boards with different thicknesses.
[0012] Preferably, the anti-shift and distance-fixing component includes two vertical rods fixed above the support plate. An installation plate is slidably installed between the outer surfaces of the two vertical rods. Limiting springs are sleeved on the outer surfaces of the two vertical rods. A plurality of pressing wheels are rotatably arranged below each of the two installation plates.
[0013] Preferably, the limiting frame is fixed above the installation plate.
[0014] Preferably, the negative magnetic plate is fixed above the installation plate.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0016] 1. According to the data obtained by adding the dimension of the depth-control external thread sleeve extending into the internal thread cylinder, the thickness of the internal thread cylinder, and the fixed dimension, and subtracting the length of the drill head, the accurate opening depth dimension is obtained. The drill head is restricted by the top of the depth-control external thread sleeve and can only move down to a certain depth. Therefore, the effect of controlling the opening depth of the PCB board is achieved. By rotating the depth-control external thread sleeve to change the upward extending dimension, the depth-control dimension can be changed. It has a wide range of applications and high flexibility.
[0017] 2. The present invention changes the positions of the internal thread cylinder and the depth-control external thread sleeve by moving the support rods left, right, front, and back in the limiting frame. When moving, the clamping heads at different positions will sequentially enter the limiting frame and change their positions in the limiting frame to find the clamping holes at different positions. The positioning springs push the clamping heads into the clamping holes to fix the support rods, thereby flexibly adjusting and fixing the positions of the internal thread cylinder and the depth-control external thread sleeve. The depth can be controlled at different positions on the PCB board, improving the application range and flexibility of the structure. Description of the Drawings
[0018] Figure 1 is the front view structure schematic diagram of the present utility model;
[0019] Figure 2 is the split cross-sectional view of the central control depth adjustment component of the present utility model;
[0020] Figure 3 is Figure 2 the enlarged structure schematic diagram of part A in
[0021] Figure 4 is Figure 2 the enlarged structure schematic diagram of part B in
[0022] Figure 5 is the bottom view of the mounting plate in the present utility model.
[0023] The numbers in the figure represent:
[0024] 1, support plate; 2, PCB board; 3, depth adjustment component; 31, internal thread cylinder; 32, depth control external thread sleeve; 33, limit frame; 34, support rod; 35, positioning spring; 36, clamping head; 37, clamping hole; 38, inner groove; 39, anti-displacement plate; 310, lifting buckle; 311, positive magnetic plate; 312, negative magnetic plate; 4, anti-shift and distance-fixing component; 41, vertical rod; 42, mounting plate; 43, limit spring; 44, pressing wheel. Specific Embodiment
[0025] The following further elaborates on the above and other technical features and advantages of the present utility model with reference to the accompanying drawings.
[0026] This embodiment provides a technical solution: a structure for improving the depth control accuracy of a PCB board, as shown in Figure 1 and Figure 2 , which includes a support plate 1 and a depth adjustment component 3. The PCB board 2 is arranged above the support plate 1. A spacer is arranged between the PCB board 2 and the support plate 1, and the spacer can protect the lower part of the PCB board 2 and the upper part of the support plate 1. The depth adjustment component 3 is arranged above the support plate 1. The depth adjustment component 3 includes a depth adjustment part, a position conversion part, and an anti-displacement part. The depth adjustment part is used to change the depth control dimension, and the depth control dimension can be flexibly adjusted according to different drilling depth requirements, improving the applicable range and flexibility of the equipment. The position conversion part is used to change the position of the depth adjustment part, changing the corresponding position of the depth control external thread sleeve 32 above the PCB board 2, making the depth adjustment part more flexible to use. The anti-displacement part is used to limit the position of the position conversion part, facilitating the replacement and use of depth adjustment parts of different sizes;
[0027] As shown in Figure 1 and Figure 5As shown, the depth adjustment member includes an internally threaded cylinder 31 and a depth control externally threaded sleeve 32. The depth control externally threaded sleeve 32 is threadedly connected to the inside of the internally threaded cylinder 31. The distance from the bottom of the pressing wheel 44 to the bottom of the internally threaded cylinder 31 is fixed, and this distance is marked on one of the mounting plates 42. Moreover, scale lines are provided on the outer surfaces of the internally threaded cylinder 31 and the depth control externally threaded sleeve 32. By rotating the depth control externally threaded sleeve 32, the size that the depth control externally threaded sleeve 32 extends above the internally threaded cylinder 31, plus the fixed distance marked on the mounting plate 42 and the size of the internally threaded cylinder 31, is the depth control size. Adjusting the size that the depth control externally threaded sleeve 32 extends above the internally threaded cylinder 31 can flexibly change the depth control size.
[0028] As Figure 2 , Figure 3 and Figure 5 shown, the position changing member includes two limiting frames 33, two support rods 34, a plurality of positioning springs 35 and a plurality of clamping heads 36. Both of the two limiting frames 33 are L-shaped and are respectively arranged above the two mounting plates 42, and the limiting frames 33 are fixed above the mounting plates 42. The distance between the L-shaped limiting frame 33 and the top of the mounting plate 42 is adapted to the size of the support rod 34. A plurality of clamping holes 37 are formed on the inner sides of both of the two limiting frames 33, and the size of the clamping holes 37 is adapted to the size of the clamping heads 36. One end of each of the two support rods 34 is fixed to the outer surface of the internally threaded cylinder 31. A plurality of inner grooves 38 are formed inside both of the two support rods 34. A plurality of positioning springs 35 are respectively arranged inside the plurality of inner grooves 38. A plurality of clamping heads 36 are all slidably installed inside the plurality of inner grooves 38. One end of the clamping head 36 penetrates through the support rod 34 and is inserted and fixed to the corresponding clamping hole 37. When the positioning spring 35 is in its original state, the clamping head 36 is outside the support rod 34. After the positioning spring 35 contracts under a thrust force, it can push the clamping head 36 out to reset through its own elastic force.
[0029] As Figure 2 and Figure 4 shown, the anti-disengagement member includes an anti-disengagement plate 39, a lifting buckle 310, a positive magnetic plate 311 and a negative magnetic plate 312. The anti-disengagement plate 39 slides inside the limiting frame 33. As Figure 2 shown, the anti-disengagement plate 39 is close to the open end of the limiting frame 33. The lifting buckle 310 is fixed above the anti-disengagement plate 39. The positive magnetic plate 311 is fixed below the anti-disengagement plate 39. The negative magnetic plate 312 is fixed above the mounting plate 42. As Figure 4 shown, the negative magnetic plate 312 is embedded in the mounting plate 42, and the top of the negative magnetic plate 312 is flush with the top of the mounting plate 42 to avoid interfering with the passing of the support rod 34.
[0030] As Figure 1 and Figure 5As shown in the figure, two symmetrically arranged anti-shift and fixed-distance components 4 are installed above the support plate 1. The anti-shift and fixed-distance components 4 are used to fix the positions of PCB boards 2 with different thicknesses. The PCB boards 2 with different thicknesses are placed on the support plate 1. The fixed dimension from the PCB board 2 to the lower part of the internal thread cylinder 31 is the same, and it will not change or affect the fixed distance, resulting in frequent adjustment in the later stage. The anti-shift and fixed-distance components 4 include two vertical rods 41 fixed above the support plate 1. An installation plate 42 is slidably installed between the outer surfaces of the two vertical rods 41. The outer surfaces of the two vertical rods 41 are both sleeved with limiting springs 43. One end of the limiting spring 43 is fixed below the installation plate 42, and it can pull the installation plate 42 when the installation plate 42 moves upward, facilitating the height limitation of the installation plate 42 by the limiting spring 43. A plurality of pressing wheels 44 are rotatably arranged below the two installation plates 42. A soft pad is arranged on the outer surface of the pressing wheel 44 to prevent damage to the surface of the PCB board 2 when the PCB board 2 moves below the pressing wheel 44.
[0031] During use, the PCB board 2 is pushed in from below the pressing wheel 44 until the PCB board 2 is between the two installation plates 42. For PCB boards 2 with different thicknesses, when being squeezed between the pressing wheel 44 and the support plate 1, the degree of upward movement of the installation plate 42 is different. Due to the pulling of the limiting spring 43, the installation plate 42 will always fit on the upper surface of the PCB board 2 with different thicknesses to fix its position. According to the requirements of the opening depth and the length of the drill bit, rotate the depth-control external thread sleeve 32. Subtract the length of the drill bit from the data obtained by adding the dimension of the depth-control external thread sleeve 32 extending into the internal thread cylinder 31, the thickness of the internal thread cylinder 31, and the fixed dimension on the installation plate 42. The subtracted dimension is the accurate opening dimension. When the drill bit moves downward for opening, it is restricted by the top of the depth-control external thread sleeve 32 and can only move downward to a certain position. Therefore, the opening depth of the PCB board 2 is controlled. For different thicknesses and different hole depth requirements, only need to rotate the depth-control external thread sleeve 32 to change the dimension of the depth-control external thread sleeve 32 extending upward, so as to change the depth-control dimension. It has a wide range of uses and high flexibility.
[0032] For the opening requirements at different positions, the support rod 34 can be pulled out and moved. Moving the support rod 34 left and right will change the positions of the internal thread cylinder 31 and the depth-control external thread sleeve 32 in the horizontal direction, and moving it forward and backward will change the positions of the internal thread cylinder 31 and the depth-control external thread sleeve 32 in the front and back horizontal directions. When moving the support rod 34, the positioning heads 36 at different positions will successively enter the limiting frame 33 and change their positions in the limiting frame 33 to find the card holes 37 at different positions. After the positioning head 36 moves to the corresponding card hole 37, the positioning spring 35 will push the positioning head 36 into the card hole 37 to fix the position of the support rod 34, thereby flexibly adjusting and fixing the positions of the internal thread cylinder 31 and the depth-control external thread sleeve 32, improving the use range and flexibility of the structure.
[0033] The above are only the preferred embodiments of the present utility model, which are illustrative rather than restrictive to the present utility model. Those skilled in the art understand that many changes, modifications, or even equivalents can be made within the spirit and scope defined by the claims of the present utility model, but all will fall within the protection scope of the present utility model.
Claims
1. A structure for improving the control depth accuracy of a PCB board, characterized in that, Including: A support plate (1), and a PCB board (2) is disposed above the support plate (1); A depth control adjustment component (3), the depth control adjustment component (3) is disposed above the support plate (1), the depth control adjustment component (3) includes a depth adjustment member, a position conversion member, and an anti - detachment member, the depth adjustment member is used to change the depth control dimension, the position conversion member is used to change the position of the depth adjustment member, and the anti - detachment member is used to limit the position of the position conversion member; The depth adjustment member includes an internal - thread cylinder (31) and a depth - control external - thread sleeve (32), and the depth - control external - thread sleeve (32) is threadedly connected to the inside of the internal - thread cylinder (31).
2. The structure for improving the depth control accuracy of the PCB board according to claim 1, characterized in that, The position conversion member includes two limit frames (33), two support rods (34), a plurality of positioning springs (35), and a plurality of clamping heads (36). A plurality of clamping holes (37) are formed on the inner sides of the two limit frames (33). One ends of the two support rods (34) are respectively fixed to the outer surface of the internal - thread cylinder (31). A plurality of inner grooves (38) are formed inside the two support rods (34). The plurality of positioning springs (35) are respectively disposed inside the plurality of inner grooves (38). The plurality of clamping heads (36) are all slidably installed inside the plurality of inner grooves (38). One end of the clamping head (36) penetrates through the support rod (34) and is inserted and fixed to the corresponding clamping hole (37).
3. The structure for improving the depth control precision of the PCB board according to claim 2, characterized in that, The anti - detachment member includes an anti - detachment plate (39), a lifting buckle (310), a positive magnetic plate (311), and a negative magnetic plate (312). The anti - detachment plate (39) slides inside the limit frame (33). The lifting buckle (310) is fixed above the anti - detachment plate (39). The positive magnetic plate (311) is fixed below the anti - detachment plate (39).
4. The structure for improving the depth control accuracy of the PCB board according to claim 3, characterized in that, Two symmetrically - arranged anti - displacement and distance - fixing components (4) are installed above the support plate (1), and the anti - displacement and distance - fixing components (4) are used to fix the positions of PCB boards (2) with different thicknesses.
5. The structure for improving the control depth accuracy of the PCB board according to claim 4, characterized in that, The anti - displacement and distance - fixing component (4) includes two vertical rods (41) fixed above the support plate (1). An installation plate (42) is slidably installed between the outer surfaces of the two vertical rods (41). Limiting springs (43) are sleeved on the outer surfaces of the two vertical rods (41). A plurality of pressing wheels (44) are rotatably arranged below the two installation plates (42).
6. The structure for improving the control depth accuracy of the PCB board according to claim 5, characterized in that, The limit frame (33) is fixed above the installation plate (42).
7. The structure for improving the control depth accuracy of the PCB board according to claim 5, characterized in that, The negative magnetic plate (312) is fixed above the installation plate (42).