Composite cold-punched plate for drilling PCB (printed circuit board)

Abstract

The utility model discloses a composite cold-punched plate for drilling a PCB (Printed Circuit Board), which relates to the field of composite cold-punched plates and comprises a cold-punched plate main body, a frame is fixed on the outer wall of the cold-punched plate main body, a plurality of groups of fixing grooves are formed in the end part of the frame, and a protective layer, a damp-proof layer, a log layer and a supporting layer are arranged in the cold-punched plate main body. A damp-proof layer is connected to the top of the log layer, a protection layer is installed at the top end of the damp-proof layer, and a supporting layer is arranged at the bottom end of the log layer. According to the utility model, the protective layer is made of silicon oxide material, so that the surface of the cold-punched plate main body has high-strength wear resistance and hardness, the protective layer cannot be locally sunken or deformed in the drilling operation of a PCB (Printed Circuit Board), and the damp-proof layer is arranged in the cold-punched plate main body, so that the service life of the cold-punched plate main body is prolonged. Deformation caused by the fact that water on the surface of the cold-punched plate body permeates into a log layer in the cold-punched plate body in long-term use is prevented, and the influence of the uneven surface of the PCB drilling operation table on the cold-punched plate body is reduced.

Description

Technical Field

[0001] The utility model relates to the field of composite cold punching plates, in particular to a composite cold punching plate used for drilling holes in PCB boards. Background Art

[0002] In modern electronics, PCBs (printed circuit boards) serve as carriers of electronic components. Their quality and performance directly impact the reliability and stability of electronic products. Drilling is a critical step in the PCB manufacturing process, primarily to create conductive pathways and holes for mounting electronic components. PCBs are typically drilled mechanically, using a high-speed rotating drill bit to create the desired holes. During the drilling process, the PCB must remain horizontal and stable to ensure accurate drilling. Therefore, a composite cold-punched plate is placed beneath the PCB to provide support and stability.

[0003] Composite cold punching plates have similar functions to traditional backing plates to a certain extent. The backing plate mainly plays a supporting role during the drilling process of the PCB board to prevent the PCB board from deformation or damage during drilling. Composite cold punching plates not only have the basic functions of a backing plate, but also have more advantages and special functions. Composite cold punching plates are usually composed of multiple layers of different materials, which makes the composite cold punching plates have high strength support and good wear resistance. They provide stable support for the PCB board and ensure the accuracy and quality of drilling.

[0004] Existing composite cold-punched panels are composed of high-strength alloy plates and original wood boards. When the composite cold-punched panels are exposed to the air for a long time, water molecules in the air penetrate into the original wood boards, causing the composite cold-punched panels to deform, which ultimately affects the accuracy of the PCB board drilling operation. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a composite cold punching plate for drilling holes in PCB boards, so as to solve the technical problem that the deformation of the surface of the traditional composite cold punching plate after long-term use will cause abnormal drilling operation of the PCB board.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a composite cold punching plate for drilling holes in PCB boards, comprising a cold punching plate body, a frame fixed to the outer wall of the cold punching plate body, and multiple sets of fixing grooves formed at the ends of the frame, the interior of the cold punching plate body being provided with a protective layer, a moisture-proof layer, a log layer, and a support layer, the top of the log layer being connected to the moisture-proof layer, the top of the moisture-proof layer being provided with a protective layer, and the bottom of the log layer being provided with a support layer.

[0007] By adopting the above technical solution, the technical problem that deformation of the surface of a traditional composite cold punching plate after long-term use may cause abnormal drilling operation of the PCB board is solved. The protective layer on the top of the cold punching plate body is made of silicon oxide material, which makes the surface of the cold punching plate body have high wear resistance and hardness. During the drilling operation of the PCB board, the protective layer will not be locally dented or deformed. In addition, a moisture-proof layer is provided inside the cold punching plate body to prevent moisture on the surface of the cold punching plate body from penetrating into the log layer inside the cold punching plate body and causing deformation during long-term use. In addition, a supporting layer made of aluminum alloy is installed at the bottom of the cold punching plate body to support the cold punching plate body and reduce the impact of the uneven surface of the PCB board drilling operation table on the cold punching plate body.

[0008] The utility model is further configured such that the protective layer is made of silicon oxide ceramic material, and the protective layer made of silicon oxide ceramic material has extremely high hardness and wear resistance.

[0009] By adopting the above technical solution, the protective layer made of silicon oxide ceramic material can effectively resist the wear and scraping of the drill bit during the drilling process of the PCB board. At the same time, the protective layer has extremely high hardness, so that the drill bit will not easily leave holes on the surface of the cold punched board body.

[0010] The present invention is further configured such that a reinforcement frame is provided at the bottom end of the interior of the protective layer, and the reinforcement frame is configured in a field shape.

[0011] By adopting the above technical solution, since the protective layer is made of silicon oxide ceramic material, the toughness of the protective layer is insufficient, and the reinforcing frame is made of carbon fiber material, the overall strength inside the protective layer is enhanced to prevent the protective layer from deformation.

[0012] The present invention is further configured such that a plurality of groups of conductive posts are installed inside the cold stamping plate body, and the conductive posts are made of metal copper.

[0013] By adopting the above technical solution, static electricity is easily generated on the PCB board during the drilling process. The conductive pillars can conduct the static electricity generated on the PCB board during the drilling process to the PCB board drilling operation table, thereby preventing static electricity from causing damage to electronic devices on the PCB board.

[0014] The present invention is further configured such that the outer wall of the conductive column is provided with a waterproof coating, which can prevent moisture from penetrating into the interior of the cold stamping plate body through the conductive column.

[0015] By adopting the above technical solution, since the end of the conductive column is exposed to the outside air, some moisture may penetrate into the interior of the cold punching plate body through the outer wall of the conductive column. Applying a waterproof coating on the outer wall of the conductive column can prevent moisture from penetrating into the interior of the cold punching plate body through the conductive column.

[0016] The present invention is further configured such that a heat conducting sheet is provided on the top of the cold punching plate body, and the heat conducting sheet is connected to the top of the conductive column.

[0017] By adopting the above technical solution, during the drilling process of the PCB board, the heat generated by the friction between the drill hole and the PCB board can burn the electronic components inside the PCB board. The thermal conductive sheet transfers the heat on the PCB board to the conductive pillars and the conductive sheet for heat dissipation, thereby reducing the damage to the PCB board components caused by the heat generated during the drilling process of the PCB board.

[0018] The present invention is further configured such that the bottom end of the conductive column is connected to a conductive sheet, and the bottom of the conductive sheet is at the same level as the bottom surface of the cold punching plate body.

[0019] By adopting the above technical solution, the conductive sheet is made of metal copper, which has good electrical and thermal conductivity. The heat and static electricity conducted from the inside of the conductive column are conducted to the operating table through the conductive sheet, thereby protecting the PCB board.

[0020] The present invention is further configured such that the corners of the cold punching plate body are configured to be arc-shaped, and the arc-shaped corners make it less likely for cracks to appear at the connection between the cold punching plate body and the frame.

[0021] By adopting the above technical solution, during the PCB board drilling process, the surface of the cold punching plate body will be subjected to a certain amount of pressure. The corners of the cold punching plate body are set to be arc-shaped, so that the frame can evenly share the pressure of the cold punching plate body.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. The utility model solves the technical problem that deformation of the surface of a traditional composite cold punching plate after long-term use may cause abnormal drilling operation of the PCB board by arranging a cold punching plate body, a protective layer, a moisture-proof layer, a log layer, a support layer and a frame. The protective layer on the top of the cold punching plate body is made of silicon oxide material, which makes the surface of the cold punching plate body have high wear resistance and hardness. During the drilling operation of the PCB board, the protective layer will not be locally dented or deformed. In addition, a moisture-proof layer is provided inside the cold punching plate body to prevent moisture on the surface of the cold punching plate body from penetrating into the log layer inside the cold punching plate body and causing deformation during long-term use. In addition, a support layer made of aluminum alloy is installed at the bottom of the cold punching plate body to support the cold punching plate body and reduce the impact of the uneven surface of the PCB board drilling operation table on the cold punching plate body.

[0024] 2. The utility model provides a heat conducting sheet, a conductive column and a conductive sheet. The heat generated by drilling a hole in the PCB board is transferred to the conductive column and the conductive sheet through the heat conducting sheet on the surface of the cold punching plate body for dissipation, thereby reducing damage to the PCB board caused by the heat generated by drilling. In addition, since the conductive column is made of copper metal with excellent conductive properties, the static electricity generated by the PCB board during the drilling process is transferred to the PCB board drilling operation table through the conductive column, thereby preventing static electricity from causing damage to electronic devices on the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an overall schematic diagram of the device of the present utility model;

[0026] Figure 2 This is the internal structure diagram of the cold stamping plate of the present utility model;

[0027] Figure 3 This is an internal cross-sectional view of the cold stamping plate of the present invention;

[0028] Figure 4 This is a diagram of the internal structure of the protective layer of the utility model;

[0029] Figure 5 This is a schematic diagram of the bolt fixing method of the present invention.

[0030] In the figure: 1. Cold stamping plate body; 11. Protective layer; 110. Reinforcement frame; 12. Moisture-proof layer; 13. Log layer; 14. Support layer; 2. Frame; 21. Fixing groove; 22. Groove; 3. Heat conducting plate; 4. Conductive column; 41. Waterproof coating; 5. Conductive plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] The following describes an embodiment of the present invention based on its overall structure. Example 1

[0033] A composite cold punching plate for drilling holes in PCB boards, such as Figure 1 - Figure 4 As shown, it includes a cold punching plate body 1, a frame 2 is fixed to the outer wall of the cold punching plate body 1, and a plurality of fixing grooves 21 are provided at the end of the frame 2. The interior of the cold punching plate body 1 is provided with a protective layer 11, a moisture-proof layer 12, a log layer 13 and a support layer 14. The top of the log layer 13 is connected to the moisture-proof layer 12, and the top of the moisture-proof layer 12 is installed with the protective layer 11. The bottom of the log layer 13 is provided with a support layer 14, which solves the technical problem that the deformation of the surface of the traditional composite cold punching plate after long-term use will cause abnormal drilling operation of the PCB board. The protective layer 11 on the top of the cold punching plate body 1 is made of silicon oxide material. The surface of the cold punching plate body 1 has high wear resistance and hardness. During the drilling operation of the PCB board, the protective layer 11 will not be locally dented or deformed. A moisture-proof layer 12 is provided inside the cold punching plate body 1 to prevent moisture on the surface of the cold punching plate body 1 from penetrating into the log layer 13 inside the cold punching plate body 1 and causing deformation during long-term use. A supporting layer 14 made of aluminum alloy is installed at the bottom of the cold punching plate body 1 to support the cold punching plate body 1 and reduce the impact of the uneven surface of the PCB board drilling operation table on the cold punching plate body 1.

[0034] See also Figure 2 The protective layer 11 is made of silicon oxide ceramic material. The protective layer 11 made of silicon oxide ceramic material has extremely high hardness and wear resistance. The protective layer 11 made of silicon oxide ceramic material can effectively resist the wear and scraping of the drill bit during the drilling process of the PCB board. At the same time, the protective layer 11 has extremely high hardness, so that the drill bit will not easily leave holes on the surface of the cold punching board body 1.

[0035] See also Figure 4 A reinforcing frame 110 is provided at the bottom end of the protective layer 11, and the reinforcing frame 110 is arranged in a field shape. Since the protective layer 11 is made of silicon oxide ceramic material, the toughness of the protective layer 11 is insufficient. The reinforcing frame 110 is made of carbon fiber material, which strengthens the overall strength of the protective layer 11 and prevents the protective layer 11 from deformation.

[0036] See also Figure 3Multiple groups of conductive columns 4 are installed inside the cold punching plate body 1, and the conductive columns 4 are made of metal copper. The PCB board is very prone to static electricity during the drilling process. The conductive columns 4 can conduct the static electricity generated by the PCB board during the drilling process to the PCB board drilling operation table, thereby preventing static electricity from damaging the electronic devices on the PCB board.

[0037] See also Figure 3 The outer wall of the conductive column 4 is provided with a waterproof coating 41, which can prevent moisture from penetrating into the interior of the cold punching plate body 1 through the conductive column 4. Since the end of the conductive column 4 is exposed to the outside air, some moisture may penetrate into the interior of the cold punching plate body 1 through the outer wall of the conductive column 4. Applying the waterproof coating 41 on the outer wall of the conductive column 4 can prevent moisture from penetrating into the interior of the cold punching plate body 1 through the conductive column 4.

[0038] See also Figure 3 A heat conducting sheet 3 is provided on the top of the cold punching plate body 1, and the heat conducting sheet 3 is connected to the top of the conductive column 4. During the drilling process of the PCB board, the heat generated by the friction between the drilling hole and the PCB board will burn the electronic components inside the PCB board. The heat conducting sheet 3 conducts the heat on the PCB board to the conductive column 4 and the conductive sheet 5 for heat dissipation, thereby reducing the damage to the PCB board components caused by the heat generated during the drilling process of the PCB board.

[0039] See also Figure 3 The bottom end of the conductive column 4 is connected to a conductive sheet 5, and the bottom of the conductive sheet 5 is at the same level as the bottom surface of the cold punching plate body 1. The conductive sheet 5 is made of metal copper, which has good electrical and thermal conductivity. The heat and static electricity conducted from the inside of the conductive column 4 are conducted to the operating table through the conductive sheet 5, thereby protecting the PCB board.

[0040] See also Figure 1 The corners of the cold punching plate body 1 are set to be arc-shaped. The arc-shaped corners make it less likely for cracks to appear at the connection between the cold punching plate body 1 and the frame 2. When drilling holes in the PCB board, the surface of the cold punching plate body 1 will be subjected to a certain amount of pressure. The corners of the cold punching plate body 1 are set to be arc-shaped, so that the frame 2 can evenly share the pressure of the cold punching plate body 1. Example 2

[0041] A composite cold punching plate for drilling holes in PCB boards, such as Figure 5As shown, the technical solutions and parts of this embodiment are basically the same as those of the first embodiment, and the technically identical parts will not be repeated here. The difference is that a fixing groove 21 is provided on the frame 2 to which the edge of the cold punching plate body 1 is fixedly connected, and a groove 22 is provided inside the fixing groove 21. When the cold punching plate body 1 is placed on the PCB board drilling operation table, the staff installs the bolt inside the fixing groove 21 to fix the cold punching plate body 1 on the PCB board drilling operation table. Since the groove 22 is provided inside the fixing groove 21, the top of the bolt is at the same level as the surface of the cold punching plate body 1, reducing the impact of the uneven surface of the cold punching plate body 1. The use of bolt fixation is more stable than the traditional snap assembly fixation method, preventing the PCB board from deflecting during the drilling process.

[0042] The working principle of the present invention is as follows: first, the cold punching plate body 1 is placed on the PCB board drilling operation table, and then the fixing ring is snapped into the fixing groove 21 on the edge of the frame 2 to fix the cold punching plate body 1 on the PCB board drilling operation table, and then the PCB board is placed on the surface of the cold punching plate body 1 for drilling operation. The protective layer 11 on the top of the cold punching plate body 1 is made of silicon oxide material, so that the surface of the cold punching plate body 1 has high wear resistance and hardness. During the drilling operation of the PCB board, the protective layer 11 will not be locally dented or deformed. At the same time, the heat generated by drilling is conducted to the conductive column 4 and the conductive sheet 5 through the heat conducting sheet 3 on the surface of the cold punching plate body 1 for heat dissipation. In addition, since the conductive column 4 is made of copper metal material with excellent conductive performance, the static electricity generated by the PCB board during the drilling process is conducted to the PCB board drilling operation table through the conductive column 4, thereby preventing static electricity from damaging the electronic devices on the PCB board.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A composite cold punching plate for drilling holes in PCB boards, comprising a cold punching plate body (1), characterized in that: A frame (2) is fixed to the outer wall of the cold punching plate body (1), and a plurality of fixing grooves (21) are provided at the end of the frame (2). A protective layer (11), a moisture-proof layer (12), a log layer (13) and a support layer (14) are provided inside the cold punching plate body (1). The top of the log layer (13) is connected to the moisture-proof layer (12), and the top of the moisture-proof layer (12) is installed with the protective layer (11), and the bottom of the log layer (13) is provided with a support layer (14).

2. The composite cold punching plate for drilling holes in PCB boards according to claim 1, characterized in that: The protective layer (11) is made of silicon oxide ceramic material. The protective layer (11) made of silicon oxide ceramic material has extremely high hardness and wear resistance.

3. The composite cold punching plate for drilling holes in PCB boards according to claim 1, characterized in that: A reinforcement frame (110) is provided at the bottom end inside the protective layer (11), and the reinforcement frame (110) is arranged in a field shape.

4. The composite cold punching plate for drilling holes in PCB boards according to claim 1, characterized in that: A plurality of groups of conductive columns (4) are installed inside the cold punching plate body (1), and the conductive columns (4) are made of metallic copper.

5. The composite cold punching plate for drilling holes in PCB boards according to claim 4, characterized in that: The outer wall of the conductive column (4) is provided with a waterproof coating (41), and the waterproof coating (41) can prevent moisture from penetrating into the interior of the cold punching plate body (1) through the conductive column (4).

6. The composite cold punching plate for drilling holes in PCB boards according to claim 1, characterized in that: A heat conducting sheet (3) is provided on the top of the cold punching plate body (1), and the heat conducting sheet (3) is connected to the top of the conductive column (4).

7. The composite cold punching plate for drilling holes in PCB boards according to claim 4, characterized in that: The bottom end of the conductive column (4) is connected to a conductive sheet (5), and the bottom of the conductive sheet (5) is at the same level as the bottom surface of the cold punching plate body (1).

8. The composite cold punching plate for drilling holes in PCB boards according to claim 1, characterized in that: The corners of the cold punching plate body (1) are arranged in an arc shape, and the arc-shaped corners make it difficult for cracks to appear at the connection between the cold punching plate body (1) and the frame (2).

9. The composite cold punching plate for drilling holes in PCB boards according to claim 1, characterized in that: One side of the frame (2) is provided with a plurality of fixing grooves (21), and bolts are installed in the fixing grooves (21), so that the cold stamping plate body (1) can be firmly fixed on the operating table.

10. The composite cold punching plate for drilling holes in PCB boards according to claim 9, characterized in that: A groove (22) is provided inside the fixing slot (21), and the groove (22) enables the top of the bolt to be level with the surface of the operating table.

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