PCB blind groove bonding pad repairing cutter

Abstract

The utility model provides a PCB blind slot pad repair cutter, which relates to the technical field of circuit board production, and comprises a blade and a fixed handle, one end of the blade is fixed on the fixed handle, the other end of the blade is provided with a horizontal cutter point, the horizontal cutter point is provided with a first cutting edge, the first cutting edge is perpendicular to the length direction of the blade, and the first cutting edge is provided with a second cutting edge. The first blade is used for cleaning a bonding pad; the fixing handle is further provided with an adjustable limiting assembly, the adjustable limiting assembly is connected with the fixing handle in a sliding mode, and the adjustable limiting assembly is used for controlling the depth, stretching into the PCB, of the blade. The first cutting edge perpendicular to the length direction of the blade can be attached to the surface of a PCB bonding pad, damage to the bonding pad is avoided, and the blade is particularly suitable for cleaning precise bonding pads on a miniaturized and high-density PCB. Through the arrangement of the adjustable limiting assembly, the depth of the blade stretching into the PCB can be accurately controlled, the blade is prevented from excessively stretching into the PCB to damage a bonding pad or the PCB, the operation safety is improved, and the risk caused by misoperation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board production, in particular to a PCB blind groove pad repair tool. Background Art

[0002] With the development of electronic products towards miniaturization, lightweight and multi-functionality, the requirements for the integration and refinement of printed circuit boards (PCBs) are getting higher and higher. In high-end electronic products, such as smart phones, tablet computers, etc., in order to meet the requirements of high-density packaging, a stepped blind hole structure is often used to design PCBs.

[0003] A stepped blind hole refers to a stepped structure with different diameters on the inner wall of the hole, which is usually used to connect circuits or components at different levels. A stepped blind groove board is a special PCB, and its surface is provided with stepped blind holes for placing and fixing electronic components such as chips. During the production process of the stepped blind groove board, in order to enhance the mechanical strength and reliability of the pads, reinforcing materials are usually filled under the pads to form a reinforced blind groove board.

[0004] However, when manufacturing a reinforced blind groove board for an ultra-small stepped bonding pad, due to the extremely small size of the blind groove, and during the PCB production process, auxiliary materials such as PP glue are used, and these materials may remain inside the blind groove, especially on the surface of the bonding pad, and it is difficult to completely remove them. The presence of foreign objects will seriously affect the subsequent bonding process, resulting in problems such as insufficient bonding strength and poor contact, ultimately affecting the yield and reliability of the product.

[0005] To solve the above problems, the existing solutions mainly use ordinary tools for cleaning. However, due to the extremely small size of the blind groove, ordinary tools are difficult to penetrate deep into the blind groove for effective cleaning. The size of ordinary tools is too large to penetrate into the narrow blind groove, and it is difficult to completely remove foreign objects on the pad surface. Secondly, ordinary tools are too sharp and are prone to scratching the pad surface during the cleaning process, causing problems such as pad deformation and detachment, affecting the product quality.

[0006] Therefore, it is necessary to improve the existing PCB blind groove pad repair tool to overcome the defects of the prior art. Summary of the Utility Model

[0007] To overcome the problems existing in the related art, the purpose of the utility model is to provide a PCB blind groove pad repair tool to solve the problem of being unable to penetrate deep into the blind groove for effective cleaning existing in the prior art.

[0008] A PCB blind groove pad repair tool includes a blade and a fixed handle. One end of the blade is fixed on the fixed handle, and the other end is provided with a horizontal tool tip. The horizontal tool tip is provided with a first cutting edge, and the first cutting edge is perpendicular to the length direction of the blade. The first cutting edge is used for cleaning the pad;

[0009] The fixed handle is further provided with an adjustable limiting component, which is slidably connected to the fixed handle and is used to control the depth of the blade inserted into the PCB board.

[0010] By setting a horizontal cutting tip with a first cutting edge perpendicular to the length direction of the blade, it can effectively extend into the blind groove to clean the surface of the PCB bonding pad. Especially for the narrow space of the blind groove pad, it can improve the accuracy of pad cleaning and effectively avoid causing additional damage to the pad. The setting of the adjustable limiting component can accurately control the depth of the blade inserted into the PCB board, avoid the blade from penetrating too deeply and damaging the pad or the PCB board, improve the safety of operation, and reduce the risk brought by misoperation.

[0011] Preferably, along the length direction of the blade to the horizontal cutting tip, the width of the blade gradually decreases to form an inclined surface, and a second cutting edge is provided on the inclined surface for cleaning the side wall of the blind groove.

[0012] By setting the inclined surface and the second cutting edge, it can effectively clean the residues on the side wall of the blind groove while cleaning the pad, achieving a comprehensive cleaning of the PCB blind groove pad and avoiding the influence of residues on the welding quality.

[0013] Preferably, the width of the horizontal cutting tip is 0.1 mm to 1 mm.

[0014] Limiting the width of the horizontal cutting tip within the range of 0.1 mm to 1 mm can better adapt to PCB blind groove pads of different sizes and improve the applicable range of the tool.

[0015] Preferably, the width of the horizontal cutting tip is 0.2 mm to 0.5 mm.

[0016] Further limiting the width of the horizontal cutting tip within the range of 0.2 mm to 0.5 mm is more suitable for cleaning the ultra-small blind groove pads commonly found in precision electronic components, improving the adaptability of the tool to miniaturized electronic products.

[0017] Preferably, the blade extends out of the fixed handle by at least 2 mm.

[0018] By setting the blade to extend out of the fixed handle by at least 2 mm, it can effectively ensure that the horizontal cutting tip of the blade can enter the blind groove to contact the pad and remove foreign matters on the pad, ensuring the normal progress of pad cleaning.

[0019] Preferably, the fixed handle is further provided with a sliding track, and the adjustable limiting component includes a limiting block and track plates arranged on both sides of the limiting block, and the track plates are slidably connected to the sliding track.

[0020] The design of the sliding track and the track plate makes the sliding of the adjustable limiting component smoother and more stable, improving the limiting accuracy and the overall stability of the tool, and ensuring the reliability of the operation.

[0021] Preferably, the limiting block is cylindrical, the limiting block is arranged along the width direction of the blade, a through hole is provided on the limiting block, and the blade passes through the through hole.

[0022] With the design of the cylindrical limiting block and the through hole, the limiting block can be erected above the blind groove. While restricting the length of the blade extending into the PCB board, the blade can rotate along the cylindrical limiting block, which can provide better flexibility while ensuring that the pads are not damaged, effectively ensuring the efficiency and flexibility of pad cleaning.

[0023] Preferably, the fixed handle is further provided with a threaded hole and a locking block. The threaded hole is arranged in the sliding track. The locking block includes a rotating part, a locking part and a threaded part. The threaded part meshes with the threaded hole. The locking part is used to abut against the track plate, and the rotating part is used to rotate the locking block.

[0024] Through the arrangement of the threaded hole, the locking block and the rotating part, the position of the adjustable limiting component can be conveniently adjusted and fixed, realizing fine adjustment and reliable locking of the depth of the blade extending in, and enhancing the flexibility and convenience of tool use.

[0025] Preferably, the track plate is further provided with a sliding groove, the sliding groove is arranged along the length direction of the track plate, and the threaded part of the locking block passes through the sliding groove.

[0026] When adjusting the track plate, the sliding groove can prevent the track plate from being misaligned or slipping off during the adjustment process, improving the reliability of locking and the overall stability of the tool, and extending the service life of the tool.

[0027] The beneficial effects of the present utility model are as follows:

[0028] The present utility model provides a PCB blind via pad repair tool, which includes a blade and a fixed handle. One end of the blade is fixed on the fixed handle, and the other end is provided with a horizontal tool tip. The horizontal tool tip is provided with a first cutting edge, and the first cutting edge is perpendicular to the length direction of the blade. The first cutting edge is used for cleaning the pad. The fixed handle is also provided with an adjustable limiting component, which is slidably connected to the fixed handle and is used to control the depth of the blade extending into the PCB board. The first cutting edge perpendicular to the length direction of the blade can better fit the surface of the PCB pad. Especially when cleaning the blind via pad in a narrow space, compared with the traditional inclined cutting edge, it can more effectively scrape off the foreign matters on the pad surface and improve the cleaning efficiency. The horizontal tool tip can more precisely control the contact area and angle between the cutting edge and the pad, avoiding damage to the pad, especially suitable for cleaning the precision pads on miniaturized and high-density PCBs. When scraping off foreign matters, it can generate a greater cutting force to completely remove the foreign matters and reduce the possibility of residues remaining on the pad surface, effectively avoiding the influence of residues on the subsequent soldering process. The setting of the adjustable limiting component can accurately control the depth of the blade extending into the PCB board, avoiding the blade from penetrating too deeply and damaging the pad or the PCB board, improving the safety of operation and reducing the risk brought by misoperation. Brief Description of the Drawings

[0029] Figure 1 is a perspective view of the PCB blind via pad repair tool provided in Embodiment 1 of the present application;

[0030] Figure 2 is a cross-sectional view of the PCB blind via pad repair tool provided in Embodiment 1 of the present application;

[0031] Figure 3 is a perspective view of the adjustable limiting component provided in Embodiment 1 of the present application;

[0032] Figure 4 is a comparison diagram of the PCB blind via pad repair tool provided in Embodiment 1 of the present application and the existing tool;

[0033] Figure 5 is a perspective view of the blade provided in the embodiment of the present application.

[0034] Reference Numerals:

[0035] 100, blade; 110, horizontal tool tip; 111, first cutting edge; 121, second cutting edge;

[0036] 200, fixed handle; 210, sliding track; 220, locking block;

[0037] 300, adjustable limiting component; 310, limiting block; 311, through hole; 320, track plate; 330, chute;

[0038] 400, foreign object. Detailed implementation mode

[0039] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0040] Embodiment 1

[0041] As Figures 1-5 shown, this embodiment provides a PCB blind via pad repair tool, which includes a blade 100. The blade 100 is provided with a horizontal tip 110. The horizontal tip 110 is provided with a first cutting edge 111. The first cutting edge 111 is perpendicular to the length direction of the blade 100, and the first cutting edge 111 is used to clean the pad.

[0042] The fixed handle 200 is further provided with an adjustable limit assembly 300. The adjustable limit assembly 300 is slidably connected to the fixed handle 200, and the adjustable limit assembly 300 is used to control the depth of the blade 100 extending into the PCB board.

[0043] Specifically, the width of the horizontal tip 110 is 0.5 mm.

[0044] Furthermore, along the length direction of the blade 100 to the horizontal tip 110, the width of the blade 100 gradually decreases to form an inclined surface. The inclined surface is provided with a second cutting edge 121, and the second cutting edge 121 is used to clean the side wall of the blind via.

[0045] It can be understood that the shape of the inclined surface can be a plane, a curved surface or other shapes suitable for cleaning the side wall of the blind via, and is not limited to a plane.

[0046] Furthermore, the blade 100 extends 10 mm out of the fixed handle 200.

[0047] Furthermore, the fixed handle 200 is further provided with a sliding track 210. The adjustable limit assembly 300 includes a limit block 310 and track plates 320 arranged on both sides of the limit block 310. The track plates 320 are slidably connected to the sliding track 210.

[0048] Specifically, the limit block 310 is cylindrical. The limit block 310 is arranged along the width direction of the blade 100. The limit block 310 is provided with a through hole 311, and the blade 100 passes through the through hole 311.

[0049] More specifically, the fixing handle 200 is also provided with a threaded hole and a locking block 220. The threaded hole is arranged in the sliding rail 210. The locking block 220 includes a rotating part, a locking part and a threaded part. The threaded part is engaged with the threaded hole. The locking part is used to abut the rail plate 320. The rotating part is used to rotate the locking block 220.

[0050] More specifically, a slide groove 330 is further provided on the track plate 320 . The slide groove 330 is arranged along the length direction of the track plate 320 , and the threaded portion of the locking block 220 passes through the slide groove 330 .

[0051] Furthermore, a receiving groove is provided at one end of the fixing handle 200 close to the blade 100 , and the receiving groove is used to accommodate the limiting block 310 .

[0052] When in use, rotate the locking block 220 to move the locking block 220 away from the fixed handle 200 and unlock the adjustable limit assembly 300. Adjust the distance from the end of the limit block 310 to the horizontal blade tip 110 to make it equal to the distance from the PCB surface to the pad, then rotate the locking block 220 to make the locking block 220 abut against the track plate 320 and lock the adjustable limit assembly 300. Extend the horizontal blade tip 110 into the blind groove, close to the foreign object 400, and set the limit block 310 above the blind groove. Shake the fixed handle 200 to make it rotate along the cylindrical limit block 310, and the first blade 111 moves accordingly to approach the foreign object 400 to remove the foreign object 400.

[0053] The beneficial effect of the PCB blind slot pad repair tool in this embodiment is that through the cooperation of the adjustable limit assembly 300, the cylindrical limit block 310, the slide groove 330 and the locking block 220, the blade 100 can be flexibly rotated in the horizontal direction while limiting the depth of the blade 100 extending into the PCB board, which not only ensures the safety of operation but also improves the cleaning efficiency. It is particularly suitable for cleaning blind slot pads that are difficult to reach and have tricky locations.

[0054] Example 2

[0055] like Figures 1-5 As shown, this embodiment provides a PCB blind slot pad repair tool, which acts on a blind hole with a diameter of 2.0 mm and a depth of 0.8 mm. The PCB blind slot pad repair tool includes a blade 100, and the blade 100 is provided with a horizontal tip 110. The horizontal tip 110 is provided with a first blade 111, and the first blade 111 is perpendicular to the length direction of the blade 100. The first blade 111 is used to clean the pad.

[0056] The fixing handle 200 is also provided with an adjustable limit assembly 300 , and the adjustable limit assembly 300 is slidably connected to the fixing handle 200 . The adjustable limit assembly 300 is used to control the depth of the blade 100 extending into the PCB board.

[0057] Specifically, the width of the horizontal blade tip 110 is 0.2 mm. This size design is particularly suitable for cleaning ultra-small blind slot pads commonly found in microelectronic components.

[0058] Furthermore, the blade 100 extends out of the fixing handle by 2002 mm. A shorter extension length of the blade 100 is beneficial to improving the operational stability of the tool and reducing the shaking of the blade 100 during operation, and is particularly suitable for occasions with high requirements for cleaning accuracy.

[0059] During operation, the horizontal knife tip 110 is inserted into the blind groove, so that the horizontal knife tip 110 is close to the foreign matter 400 on the pad, and the foreign matter 400 is scraped off.

[0060] The beneficial effects of the PCB blind slot pad repair tool in this embodiment are: simple structure, easy operation, and particularly suitable for cleaning blind slot pads of smaller sizes and where high operating accuracy is required.

[0061] Example 3

[0062] like Figures 1-5 As shown, this embodiment provides a PCB blind slot pad repair tool, which includes a blade 100, wherein the blade 100 is provided with a horizontal blade tip 110, wherein the horizontal blade tip 110 is provided with a first blade 111, wherein the first blade 111 is perpendicular to the length direction of the blade 100, and the first blade 111 is used for cleaning the pad.

[0063] The fixing handle 200 is also provided with an adjustable limit assembly 300 , and the adjustable limit assembly 300 is slidably connected to the fixing handle 200 . The adjustable limit assembly 300 is used to control the depth of the blade 100 extending into the PCB board.

[0064] Specifically, the width of the horizontal blade tip 110 is 1 mm. This size design can provide a larger contact area while ensuring cleaning accuracy, and is suitable for cleaning blind slot pads with larger sizes.

[0065] More specifically, along the length direction of the blade 100 to the horizontal blade tip 110, the width of the blade 100 gradually decreases to form an inclined surface, and a second blade 121 is provided on the inclined surface. The second blade 121 is used to clean the side wall of the blind groove.

[0066] The design of the inclined surface and the second cutting edge 121 can effectively clean the residues on the side wall of the blind via while cleaning the pad, achieving comprehensive cleaning of the PCB blind via pad and avoiding the influence of residues on the welding quality.

[0067] Furthermore, the blade 100 extends 5 mm out of the fixed handle 200. The longer extending length of the blade 100 can reach deeper blind vias for operation, improving the applicable range of the tool.

[0068] The beneficial effects of the PCB blind via pad repair tool in this embodiment are as follows: it can clean the pad and the side wall of the blind via simultaneously, achieving comprehensive cleaning of the PCB blind via pad, and is suitable for cleaning deeper blind vias.

[0069] Embodiment 4

[0070] As Figures 1-5 shown, this embodiment provides a PCB blind via pad repair tool, which includes a blade 100. The blade 100 is provided with a horizontal tool tip 110, and the horizontal tool tip 110 is provided with a first cutting edge 111. The first cutting edge 111 is perpendicular to the length direction of the blade 100, and the first cutting edge 111 is used to clean the pad.

[0071] The fixed handle 200 is further provided with an adjustable limit assembly 300. The adjustable limit assembly 300 is slidably connected to the fixed handle 200, and the adjustable limit assembly 300 is used to control the depth of the blade 100 inserted into the PCB board.

[0072] Specifically, the width of the horizontal tool tip 110 is 0.1 mm.

[0073] Furthermore, along the length direction of the blade 100 to the horizontal tool tip 110, the width of the blade 100 gradually decreases to form an inclined surface, and a second cutting edge 121 is provided on the inclined surface. The second cutting edge 121 is used to clean the side wall of the blind via.

[0074] Even further, the blade 100 extends 4 mm out of the fixed handle 200.

[0075] Even further, the fixed handle 200 is further provided with a sliding track 210. The adjustable limit assembly 300 includes a limit block 310 and track plates 320 provided on both sides of the limit block 310. The track plates 320 are slidably connected to the sliding track 210.

[0076] Specifically, the limit block 310 is elliptical cylindrical, the limit block 310 is arranged along the width direction of the blade 100, and a through hole 311 is provided on the limit block 310. The blade 100 passes through the through hole 311.

[0077] Further, a chute 330 is also provided on the track plate 320, and the chute 330 is arranged along the length direction of the track plate 320.

[0078] More specifically, a rack is provided on an inner side surface of the chute 330, and a rotation adjustment block is also rotatably connected to the fixed handle 200. A gear is provided on the rotation adjustment block, and the gear meshes with the rack. When the gear is rotated, the rack drives the track plate 320 to slide along the sliding track 210.

[0079] Further, a distance marking scale is provided on the track plate 320, and the extended distance marking scale is used to mark the distance from the horizontal tool tip 110 to the limiting block 310.

[0080] During use, obtain the distance from the pad to the surface of the PCB board, adjust the rotation adjustment block to make the distance marking scale equal to the distance from the pad to the surface of the PCB board, insert the horizontal tool tip 110 into the blind slot, approach the foreign object 400 on the pad, and shake the fixed handle 200 to make the horizontal tool tip 110 rotate along the elliptical cylindrical limiting block 310 to remove the foreign object 400 on the pad.

[0081] The beneficial effects of the PCB blind slot pad repair tool in this embodiment are as follows: Through the settings of the elliptical cylindrical limiting block 310, the gear-rack transmission mechanism, and the distance marking scale, precise positioning of the moving distance and cleaning range of the blade 100 is achieved, improving the precision and efficiency of cleaning, and it is especially suitable for cleaning extremely small blind slot pads and occasions with extremely high requirements for cleaning precision.

[0082] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present application. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0083] In addition, it should be noted that the use of terms such as "first" and "second" for limitation is only for the convenience of distinction. Without otherwise stating, the above terms have no special meaning and therefore cannot be construed as limiting the protection scope of the present application.

[0084] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A PCB blind via pad repair tool, characterized in that: It includes a blade (100) and a fixed handle (200). One end of the blade (100) is fixed on the fixed handle (200), and the other end is provided with a horizontal tool tip (110). The horizontal tool tip (110) is provided with a first cutting edge (111), and the first cutting edge (111) is perpendicular to the length direction of the blade (100). The first cutting edge (111) is used for cleaning the pad. The fixed handle (200) is also provided with an adjustable limit assembly (300). The adjustable limit assembly (300) is slidably connected to the fixed handle (200), and the adjustable limit assembly (300) is used to control the depth of the blade (100) extending into the PCB board.

2. The PCB blind via pad repair tool according to claim 1, characterized in that: Along the length direction of the blade (100) to the horizontal tool tip (110), the width of the blade (100) gradually decreases to form an inclined surface. The inclined surface is provided with a second cutting edge (121), and the second cutting edge (121) is used for cleaning the side wall of the blind via.

3. The PCB blind via pad repair tool according to claim 2, characterized in that: The width of the horizontal tool tip (110) is 0.1 mm to 1 mm.

4. The PCB blind via pad repair tool according to claim 3, characterized in that: The width of the horizontal tool tip (110) is 0.2 mm to 0.5 mm.

5. The PCB blind via pad repair tool according to any one of claims 1-4, characterized in that: The blade (100) extends out of the fixed handle (200) by at least 2 mm.

6. The PCB blind via pad repair tool according to claim 5, characterized in that: The fixed handle (200) is also provided with a sliding track (210). The adjustable limit assembly (300) includes a limit block (310) and track plates (320) provided on both sides of the limit block (310). The track plates (320) are slidably connected to the sliding track (210).

7. The PCB blind via pad repair tool according to claim 6, characterized in that: The limit block (310) is cylindrical. The limit block (310) is arranged along the width direction of the blade (100). The limit block (310) is provided with a through hole (311), and the blade (100) passes through the through hole (311).

8. The PCB blind via pad repair tool according to claim 7, characterized in that: The fixed handle (200) is also provided with a threaded hole and a locking block (220). The threaded hole is arranged in the sliding track (210). The locking block (220) includes a rotating part, a locking part and a threaded part. The threaded part is engaged with the threaded hole. The locking part is used to abut against the track plate (320), and the rotating part is used to rotate the locking block (220).

9. The PCB blind via pad repair tool according to claim 8, characterized in that: The track slab (320) is further provided with a chute (330), the chute (330) is arranged along the length direction of the track slab (320), and the threaded portion of the locking block (220) passes through the chute (330).

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