A composite ceramic plate for PCB fine line grinding

Abstract

The utility model provides a kind of composite ceramic plate of PCB fine line grinding, including connecting support mechanism, the front of connecting support mechanism is detachably equipped with several grinding mechanism, all grinding mechanism splices into a grinding surface, the back of connecting support mechanism is provided with locking mechanism, and the locking mechanism is fixed to all grinding mechanism;All grinding mechanism includes ceramic grinding plate, and the back of ceramic grinding plate is provided with pin shaft. When using, several grinding mechanism splicing formation grinding surface is set, and each grinding mechanism is separately inserted in middle layer substrate by setting pin shaft, and fixed by locking mechanism, in the use process, the worn grinding mechanism and the unworn grinding mechanism can be adjusted and installed position after reassembly, so that all grinding mechanism can be completely utilized, and the worn grinding mechanism can be replaced individually, to reach the effect of improving the use rate of grinding plate.

Description

Technical Field

[0001] This utility model relates to the field of grinding plate technology, and in particular to a composite ceramic plate for grinding fine lines on PCBs. Background Technology

[0002] A grinding plate is a type of grinding equipment that uses abrasive particles coated or embedded on a grinding plate to finish the workpiece surface by means of relative motion between the grinding plate and the workpiece under certain pressure, in order to ensure the precision and surface finish of the workpiece. Grinding plates can be made of various materials such as metal and ceramic.

[0003] Chinese Patent Announcement No. CN 222269865 U discloses a composite ceramic plate entitled "A Composite Ceramic Plate for Grinding Fine Lines in PCB". Although it has a sawtooth mechanism set on both the top and bottom of the composite ceramic plate, both sides of the composite ceramic plate can be used for grinding. After one side of the composite ceramic plate is damaged by grinding, the other side can be used for grinding, thereby improving the service life of the composite ceramic plate.

[0004] However, when polishing fine lines on a PCB, the polishing area is often concentrated off-center or, depending on the product, in specific areas. When these areas wear down, the entire polishing board becomes useless. Meanwhile, the surrounding areas remain relatively intact due to lower usage, resulting in low utilization of the polishing board.

[0005] Therefore, this application proposes a composite ceramic plate for PCB fine line grinding, which improves the utilization rate of the grinding plate. Utility Model Content

[0006] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a composite ceramic plate for PCB fine line grinding, which solves the problem of low utilization rate of grinding plates mentioned in the prior art.

[0007] To achieve the above and other related objectives, this utility model provides a composite ceramic plate for PCB fine line grinding, including a connecting support mechanism. Several grinding mechanisms are detachably mounted on the front side of the connecting support mechanism, and all grinding mechanisms are spliced ​​together to form a grinding surface. A locking mechanism is provided on the back side of the connecting support mechanism to fix all grinding mechanisms.

[0008] All grinding mechanisms include a ceramic grinding plate, and a pin is provided on the back of the ceramic grinding plate. The pin passes through the front of the connecting support mechanism and extends to the back of the connecting support mechanism. A locking groove is provided on the outer surface of the pin at the location of the connecting support mechanism. The locking mechanism cooperates with the locking groove to fix the ceramic grinding plate.

[0009] Preferably, the connecting support mechanism includes a middle substrate, on which the same number of insertion limiting holes as the grinding mechanism are equidistantly arranged, the cross-section of the insertion limiting hole is perfectly matched with the cross-section of the pin, and the pin passes through the insertion limiting hole from the front of the middle substrate to the bottom of the middle substrate.

[0010] A connecting screw hole is provided at the center of the back side of the middle layer substrate, and the locking mechanism is connected to the connecting screw hole by bolts.

[0011] Preferably, the locking mechanism includes a fixing plate, and the fixing plate is provided with locking holes of the same number and spacing as the insertion limiting holes;

[0012] The locking hole is offset from the insertion limiting hole, and the edge of the locking hole can extend into the interior of the locking groove.

[0013] Preferably, the misalignment distance between the locking hole and the insertion limiting hole is the same as the depth of the locking groove, and after the inner wall of the locking hole abuts against the inner wall of the locking groove, the fixing plate and the back of the middle layer substrate are completely attached, and the thickness of the fixing plate is equal to the height of the locking groove.

[0014] Preferably, a dust collection cavity is provided on the back side of the middle layer substrate, and a central support platform is provided at the center of the dust collection cavity, with the connecting screw hole opened on the central support platform.

[0015] Preferably, the ceramic grinding plate has a dust collection hole at its center, which extends into the interior of the pin. The outer surface of the portion of the pin located inside the dust collection chamber has a dust discharge hole, which communicates with the dust collection hole.

[0016] Preferably, the front of the fixing plate abuts against the back of the central support platform, and the fixing plate is provided with a through hole that matches the position of the connecting screw hole, and the through hole is a countersunk hole.

[0017] Preferably, a bridge platform is provided on the back of the fixing plate, and the bridge platform is in the shape of an arch bridge.

[0018] Preferably, the cable tray is provided with mounting holes, and straight grooves extending outward are provided on both sides of the mounting holes.

[0019] As described above, the composite ceramic plate for PCB fine line grinding of this utility model has the following beneficial effects:

[0020] 1. This utility model forms a grinding surface by splicing together several grinding mechanisms, and each grinding mechanism is equipped with a pin that is individually inserted into the middle layer substrate and fixed by a locking mechanism. During use, the worn grinding mechanism can be reassembled after adjusting the installation position with the unworn grinding mechanism, so that all grinding mechanisms can be fully utilized and the worn grinding mechanism can be replaced individually, thereby improving the utilization rate of the grinding plate.

[0021] 2. This utility model achieves the positioning of all ceramic grinding plates by setting a locking hole that is misaligned with the insertion limiting hole on the fixed plate and opening a locking groove on the pin. After the ceramic grinding plate is inserted into the insertion limiting hole through the pin, the fixed plate is sleeved on the pin through the locking hole and moves horizontally so that the edge of the locking hole abuts against the inner wall of the locking hole. At the same time, the position of the fixed plate is fixed by bolts, thus achieving the effect of convenient fixing.

[0022] 3. This utility model provides a dust collection chamber on the back of the middle layer substrate, and simultaneously opens dust collection holes on the ceramic grinding plate and dust discharge holes on the pin shaft, so that the dust collection holes and dust discharge holes are connected. During the grinding process, the debris will fall into the dust collection chamber through the dust collection holes and dust discharge holes, thereby avoiding the repeated friction between the PCB board and the ceramic grinding plate, which would scratch and damage the outer surface of the PCB board, thus achieving the effect of improving the grinding precision.

[0023] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. Attached Figure Description

[0024] Figure 1 The diagram shown is a structural schematic of this utility model.

[0025] Figure 2 The diagram shown is an exploded view of this utility model.

[0026] Figure 3 The image shown is a cross-sectional view of the connection between the locking mechanism and the grinding mechanism of this utility model.

[0027] Figure 4 This utility model is shown. Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0028] Figure 5 The diagram shown is a structural schematic of the grinding mechanism of this utility model.

[0029] Figure 6 The image shown is a cross-sectional view of the grinding mechanism of this utility model.

[0030] Figure 7 The diagram shown is a structural schematic of the connecting support mechanism of this utility model.

[0031] Figure 8 The diagram shown is a structural schematic of the locking mechanism of this utility model.

[0032] Component designation explanation:

[0033] 1. Connecting support mechanism; 11. Middle layer substrate; 12. Insertion limiting hole; 13. Ash collection cavity; 14. Central support platform; 15. Connecting screw hole;

[0034] 2. Grinding mechanism; 21. Ceramic grinding plate; 22. Pin; 23. Locking groove; 24. Ash collection hole; 25. Ash discharge hole;

[0035] 3. Locking mechanism; 31. Fixing plate; 32. Locking hole; 33. Through hole; 34. Cable tray platform. Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0037] Please see Figures 1 to 8 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0038] like Figures 1-3 and Figure 5 As shown, this utility model provides a composite ceramic plate for grinding fine lines on PCBs, including a connecting support mechanism 1. Several grinding mechanisms 2 are detachably mounted on the front of the connecting support mechanism 1. Each grinding mechanism 2 is approximately the same size, and all grinding mechanisms 2 are assembled to form a grinding surface. A locking mechanism 3 is provided on the back of the connecting support mechanism 1 to fix all grinding mechanisms 2. When the locking mechanism 3 releases its restraint on the grinding mechanisms 2, worn and unworn grinding mechanisms 2 can be interchanged and reassembled, thereby improving the utilization rate of the grinding plate and avoiding waste due to incomplete use.

[0039] All grinding mechanisms 2 include a ceramic grinding plate 21. The front of the ceramic grinding plate 21 has a frosted surface for fine grinding of the PCB board. A pin 22 is provided on the back of the ceramic grinding plate 21. The pin 22 passes through the front of the connecting support mechanism 1 and extends to the back of the connecting support mechanism 1. The ceramic grinding plate 21 is limited by the pin 22 in cooperation with the connecting support mechanism 1, which can prevent the ceramic grinding plate 21 from shifting position under force during the grinding process. A locking groove 23 is provided on the outer surface of the pin 22 at the position of the connecting support mechanism 1. The locking mechanism 3 cooperates with the locking groove 23 to fix the ceramic grinding plate 21 to prevent the pin 22 from disengaging from the inside of the connecting support mechanism 1.

[0040] like Figure 7 As shown, in some embodiments, the connecting support mechanism 1 of this utility model includes a middle substrate 11. The middle substrate 11 has the same number of insertion limiting holes 12 as the grinding mechanism 2, evenly spaced. The cross-section of the insertion limiting holes 12 is perfectly matched with the cross-section of the pin 22. The pin 22 passes through the insertion limiting holes 12 from the front of the middle substrate 11 to the bottom of the middle substrate 11. When the pin 22 is inserted into the insertion limiting hole 12, the insertion limiting hole 12 covers the outer surface of the pin 22, thereby preventing the ceramic grinding plate 21 from shaking during the grinding process and improving the stability of the grinding process.

[0041] A connecting screw hole 15 is provided at the center of the back side of the middle layer substrate 11. The locking mechanism 3 is connected to the connecting screw hole 15 by bolts, so that the locking mechanism 3 can be stably fixed on the back side of the middle layer substrate 11 to further fix the grinding mechanism 2 and prevent the pin 22 from coming out of the insertion limiting hole 12.

[0042] like Figures 2-4 and Figure 8 As shown, in some embodiments, the locking mechanism 3 of this utility model includes a fixing plate 31. The fixing plate 31 is provided with locking holes 32, which are the same in number and spacing as the insertion limiting holes 12. When the fixing plate 31 is installed, the locking holes 32 are also penetrated by the pin 22.

[0043] The locking hole 32 is offset from the insertion limiting hole 12. When all the pins 22 pass through the locking hole 32, the fixing plate 31 is pushed horizontally. At this time, the edge of the locking hole 32 can extend into the interior of the locking groove 23 to lock the position of the pins 22, thereby preventing the pins 22 from coming out of the interior of the locking hole 32.

[0044] like Figure 4As shown, in some embodiments, the misalignment distance between the locking hole 32 and the insertion limiting hole 12 is the same as the depth of the locking groove 23. After the inner wall of the locking hole 32 abuts against the inner wall of the locking groove 23, the fixing plate 31 is completely attached to the back of the middle substrate 11. Thus, after the pin 22 is locked through the locking hole 32, the outer surface of the fixing plate 31 is flush with the outer surface of the middle substrate 11. The thickness of the fixing plate 31 is equal to the height of the locking groove 23, so that the edge of the locking hole 32 is completely abutted after extending into the locking groove 23, thereby improving the stability of the pin 22 and further preventing the ceramic grinding plate 21 from shaking and expanding during the grinding process.

[0045] like Figure 2 and Figure 7 As shown, in some embodiments, a dust collection cavity 13 is provided on the back side of the intermediate layer substrate 11 of this invention to reduce the weight of the intermediate layer substrate 11. A central support platform 14 is provided at the center of the dust collection cavity 13, and connecting screw holes 15 are formed on the central support platform 14 to reduce the length of the bolts used to install the fixing plate 31.

[0046] like Figure 1 , Figure 5 and Figure 6 As shown, in some embodiments, the ceramic grinding plate 21 of this invention has a dust collection hole 24 at its center, which extends into the interior of the pin 22. The outer surface of the portion of the pin 22 located inside the dust collection chamber 13 has a dust discharge hole 25, which communicates with the dust collection hole 24. During the grinding process, the generated debris is gradually driven into the dust collection hole 24 by the friction during grinding, and then discharged into the interior of the dust collection chamber 13 through the dust discharge hole 25. This avoids repeated friction between the debris and the ceramic grinding plate 21, preventing scratches on the PCB board. The number of dust collection holes 24 on a single ceramic grinding plate 21 is set as needed to improve the efficiency of chip removal.

[0047] like Figure 2 and Figure 8 As shown, in some embodiments, the front of the fixing plate 31 of this utility model abuts against the back of the central support platform 14 to improve the support of the fixing plate 31, prevent the middle of the fixing plate 31 from sinking downward after being subjected to force, and improve the strength of the fixing plate 31. The fixing plate 31 is provided with a through hole 33 that matches the position of the connecting screw hole 15. The through hole 33 is a countersunk hole. By setting the through hole 33 as a countersunk hole, the bolt protrusion can be avoided.

[0048] like Figure 2 and Figure 8 As shown, in some embodiments, a cable tray 34 is provided on the back of the fixing plate 31 of this utility model. The cable tray 34 is in the shape of an arch bridge. The cable tray 34 is used to facilitate handheld operation or connection to mechanical equipment.

[0049] like Figure 8 As shown, in some embodiments, the cable tray platform 34 of this utility model has mounting holes, and straight grooves extending outward are provided on both sides of the mounting holes. The central mounting hole is used to install and remove bolts installed in the through hole 33 using tools, and to facilitate the connection of the cable tray platform 34 to mechanical equipment via threads. The straight grooves extending outward from the sides of the mounting holes are used to adjust the installation position and angle when the cable tray platform 34 is connected to the mechanical equipment, improving the ease of installation.

[0050] In summary, the composite ceramic plate for PCB fine line grinding of this utility model forms a grinding surface by splicing together several grinding mechanisms 2, and each grinding mechanism 2 is provided with a pin 22 that is individually inserted into the middle layer substrate 11 and fixed by a locking mechanism 3. During use, the worn grinding mechanism 2 and the unworn grinding mechanism 2 can be adjusted and reassembled, so that all grinding mechanisms 2 can be fully utilized, and the worn grinding mechanism 2 can be replaced individually, thereby improving the utilization rate of the grinding board.

[0051] This utility model provides a locking hole 32 on the fixed plate 31 that is misaligned with the insertion limiting hole 12, and a locking groove 23 on the pin 22. After the ceramic grinding plate 21 is inserted into the insertion limiting hole 12 through the pin 22, the fixed plate 31 is sleeved on the pin 22 through the locking hole 32 and moves horizontally so that the edge of the locking hole 32 abuts against the inner wall of the locking hole 32. At the same time, the position of the fixed plate 31 is fixed by bolts, which can achieve the positioning of all ceramic grinding plates 21 and achieve the effect of convenient fixing.

[0052] This invention provides a dust collection chamber 13 on the back of the middle layer substrate 11, and provides dust collection holes 24 on the ceramic grinding plate 21 and dust discharge holes 25 on the pin 22. The dust collection holes 24 and 25 are connected, and during the grinding process, the debris will fall into the dust collection chamber 13 through the dust collection holes 24 and 25. This avoids the debris from repeatedly rubbing between the PCB board and the ceramic grinding plate 21, which would scratch or damage the outer surface of the PCB board, thus improving the grinding precision.

[0053] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0054] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A composite ceramic plate for PCB fine line grinding, characterized in that, It includes a connecting support mechanism (1), on the front of which several grinding mechanisms (2) are detachably mounted, and all grinding mechanisms (2) are spliced ​​together to form a grinding surface. A locking mechanism (3) is provided on the back of the connecting support mechanism (1), and the locking mechanism (3) fixes all grinding mechanisms (2). All grinding mechanisms (2) include a ceramic grinding plate (21). A pin (22) is provided on the back of the ceramic grinding plate (21). The pin (22) passes through the front of the connecting support mechanism (1) and extends to the back of the connecting support mechanism (1). A locking groove (23) is provided on the outer surface of the pin (22) at the position of the connecting support mechanism (1). The locking mechanism (3) cooperates with the locking groove (23) to fix the ceramic grinding plate (21).

2. The composite ceramic plate for PCB fine line grinding according to claim 1, characterized in that: The connecting support mechanism (1) includes a middle substrate (11). The middle substrate (11) is provided with the same number of insertion limiting holes (12) as the grinding mechanism (2) at equal intervals. The cross section of the insertion limiting hole (12) is completely adapted to the cross section of the pin (22). The pin (22) passes through the insertion limiting hole (12) from the front of the middle substrate (11) to the bottom of the middle substrate (11). The back center of the middle substrate (11) is provided with a connecting screw hole (15), and the locking mechanism (3) is connected to the connecting screw hole (15) by bolts.

3. The composite ceramic plate for PCB fine line grinding according to claim 2, characterized in that: The locking mechanism (3) includes a fixing plate (31), and the fixing plate (31) is provided with locking holes (32) in the same number and spacing as the insertion limiting holes (12). The locking hole (32) is offset from the insertion limiting hole (12), and the edge of the locking hole (32) can extend into the interior of the locking groove (23).

4. The composite ceramic plate for PCB fine line grinding according to claim 3, characterized in that: The misalignment distance between the locking hole (32) and the insertion limiting hole (12) is the same as the depth of the locking groove (23). After the inner wall of the locking hole (32) abuts against the inner wall of the locking groove (23), the fixing plate (31) and the back of the middle substrate (11) are completely attached. The thickness of the fixing plate (31) is equal to the height of the locking groove (23).

5. The composite ceramic plate for PCB fine line grinding according to claim 4, characterized in that: The back of the middle substrate (11) is provided with a dust collection cavity (13), and a central support platform (14) is provided in the center of the dust collection cavity (13). The connecting screw hole (15) is opened on the central support platform (14).

6. The composite ceramic plate for PCB fine line grinding according to claim 5, characterized in that: The ceramic grinding plate (21) has a dust collection hole (24) in the center, which extends into the interior of the pin (22). The outer surface of the part of the pin (22) located inside the dust collection chamber (13) has a dust discharge hole (25), which is connected to the dust collection hole (24).

7. The composite ceramic plate for PCB fine line grinding according to claim 4, characterized in that: The front of the fixing plate (31) abuts against the back of the central support platform (14). The fixing plate (31) has a through hole (33) that matches the position of the connecting screw hole (15). The through hole (33) is a countersunk hole.

8. The composite ceramic plate for PCB fine line grinding according to claim 7, characterized in that: The back of the fixing plate (31) is provided with a bridge platform (34), which is in the shape of an arch bridge.

9. The composite ceramic plate for PCB fine line grinding according to claim 8, characterized in that: The bridge platform (34) is provided with mounting holes, and straight grooves extending outward are provided on both sides of the mounting holes.

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