Numerical control cutting seat for PCB board and cutting equipment

Abstract

The utility model discloses a numerical control cutting seat and cutting equipment for PCB board relates to the processing cutting equipment technical field of PCB board. The numerical control cutting seat for PCB board includes: fixed base, cutting knife seat, rubber pressure strip and lifting column. The fixed base includes base and the pressing plate of support on the base upper end, a plurality of cutting knife seat array arrangement in the pressing plate one side to the base, the rubber pressure strip is along horizontal defense line interval arrangement in the pressing plate one side to the base, and with cutting knife seat is interval setting, one end of lifting column is connected with fixed base, and the other end is connected with the pressing plate. By adopting the technology that the utility model provides, can avoid the partial excessive pressure to PCB board, thereby reduces the possible damage of PCB board in the cutting process.

Description

Technical Field

[0001] This utility model relates to the technical field of PCB board processing and cutting equipment, specifically to a CNC cutting stand and cutting equipment for PCB boards. Background Technology

[0002] The main CNC cutting equipment for PCB boards is the CNC milling machine. Its working principle is as follows: an Excellon file is imported into the machine's control software to identify the board outline and slot positions, thus cutting according to the set tool path. The primary fixing method for this CNC cutting equipment is based on vacuum adsorption or direct pressing of large or multiple cover plates onto the product to be cut. However, this fixing method is more suitable for large boards; when applied to PCB boards, it can easily damage the PCB. As shown in the intelligent CNC cutting machine disclosed in Chinese utility model patent document (CN209257068U), its design involves a fixed platform installed on the machine housing below the cutting blade, used to support the PCB board being cut. Therefore, some manufacturers also use laser cutting equipment, which achieves non-contact cutting through a high-energy laser beam, effectively avoiding damage to the PCB board. However, for some PCB boards with low precision requirements, laser cutting is too expensive. Utility Model Content

[0003] This invention provides a CNC cutting stand and cutting equipment for PCB boards to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides a CNC cutting stand for PCB boards, which includes: a fixed base, a cutting blade holder, a rubber pressure strip, and a lifting column.

[0005] The fixed base includes a base and a pressure plate supported on the upper end of the base; multiple cutting blade holders are arranged in an array on the side of the pressure plate facing the base; rubber pressure strips are arranged at intervals along a horizontal line on the side of the pressure plate facing the base, and are alternately arranged with the cutting blade holders; one end of the lifting column is connected to the fixed base, and the other end is connected to the pressure plate.

[0006] The beneficial effects of the technical solution provided by this utility model compared to the prior art are as follows: By adding rubber strips to press and fix the PCB board, the elastic properties of rubber can be effectively utilized, and pressure can be applied to the PCB board evenly in strip shape to avoid excessive local pressure on the PCB board, thereby reducing the possible damage to the PCB board during the cutting process.

[0007] A lifting column is installed between the fixing plate and the pressure plate, allowing the pressure plate to move downwards under the drive of the lifting column. This causes the cutting blade holder located inside the pressure plate to move towards the PCB board and perform a cutting action. The alternating arrangement of the rubber pressure strip and the cutting blade holder ensures the uniformity of the cutting force of the cutting blade holder. In other words, the fixing method of the rubber pressure strip, compared with vacuum adsorption or rigid pressing, can effectively fix the PCB board, prevent its displacement and vibration, and ensure the uniformity of the cut.

[0008] In some embodiments, the rubber pressure strip includes a rubber strip and a plurality of telescopic rods, one end of which is connected to the rubber strip and the other end of which is connected to the pressure plate.

[0009] By employing the above technical solution, the rubber strip and telescopic rod work together to automatically adjust the pressure applied to the PCB board by the telescopic rod. Specifically, when the pressure is too high, the telescopic rod retracts upwards, and the rubber strip moves upwards to reduce the pressure; when the pressure is too low, the telescopic rod moves downwards, and the rubber strip moves downwards to increase the pressure. This automatically adjusts the pressure magnitude and distribution according to the thickness and shape of the PCB board, maintaining a stable pressure state and further improving the fixation effect on the PCB board, reducing damage caused by uneven pressure.

[0010] In some embodiments, a spring is wound around the outer ring of the telescopic rod. The spring provides additional elastic support, further enhancing the cushioning performance of the telescopic rod.

[0011] In some embodiments, the mounting base further includes a movable plate that slides with the base and has an array of cutting grooves that cooperate with the cutting blade holder, wherein the PCB board can be placed between the movable plate and the rubber strip.

[0012] Using the above technical solution, the gap between the pressure plate and the base should not be too large, as an excessively large gap will increase the movement path of the pressure plate, resulting in low cutting efficiency. Therefore, a moving plate is added to allow the PCB board to be pushed into and pushed out of the cutting space to improve cutting efficiency.

[0013] In some implementations, the base is provided with a guide rail for sliding engagement with the movable board. By employing the above technical solution, the guide rail guides the movable board, ensuring the stability of PCB board assembly and movement, and the guide rail sliding method is more labor-saving.

[0014] In some implementations, a limiting seat is provided at one end of the guide rail. By adopting the above technical solution, the limiting seat is added to prevent the moving plate from carving out a cutting space along the guide rail, and the limiting seat can also serve as a positioning element for the PCB board to ensure accurate cutting.

[0015] In some embodiments, a shim plate is also provided on the side of the movable plate facing the base. By employing the above technical solution, the shim plate ensures that the left, right, and center of the movable plate remain on the same horizontal line, thereby avoiding cutting errors caused by the concavity of the PCB board during cutting.

[0016] In some embodiments, the cutting blade holder is provided with multiple cutting blades protruding circumferentially. Using the above technical solution, the circumferential arrangement of multiple cutting blades ensures that PCB board waste is removed from the PCB board, and the simultaneous cutting by multiple cutting blades improves cutting efficiency and maintains uniform force on the PCB board during cutting.

[0017] In some embodiments, this application also provides a cutting device, including the above-described CNC cutting stand for PCB boards.

[0018] Using the above technical solution, one or more CNC cutting seats for PCB boards can be installed in the frame of a cutting equipment. This cutting equipment integrates all the technical effects of the above-mentioned CNC cutting seats for PCB boards, which will not be elaborated here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a CNC cutting stand for PCB boards provided by this utility model; Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of a pressure plate for a CNC cutting seat for PCB boards provided by this utility model; Figure 3 This is a three-dimensional structural schematic diagram of an embodiment of a rubber pressure strip for a CNC cutting seat of a PCB board provided by this utility model; Figure 4 This is a three-dimensional structural schematic diagram of an embodiment of a base for a CNC cutting seat for PCB boards provided by this utility model; Figure 5 This is a three-dimensional structural schematic diagram of an embodiment of a cutting blade holder for a CNC cutting base for PCB boards provided by this utility model.

[0020] In the picture: 1. Fixed seat; 11. Base; 111. Moving plate; 112. Cutting groove; 113. Guide rail; 114. Limit seat; 115. Elevating plate; 12. Pressure plate; 2. Cutting knife holder; 21. Cutting knife; 3. Rubber pressure strip; 31. Rubber strip; 32. Telescopic rod; 321. Spring; 4. Lifting column. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] See Figures 1 to 2 As shown, Figure 1 This paper shows a three-dimensional structural schematic diagram of an embodiment of a CNC cutting fixture for PCB boards provided in this application; Figure 2 This paper shows a three-dimensional structural schematic diagram of an embodiment of a pressure plate 12 for a CNC cutting seat for a PCB board provided in this application.

[0023] In some implementations, the CNC cutting stand for PCB boards includes: a fixed base 1, a cutting blade holder 2, a rubber pressure strip 3, and a lifting column 4.

[0024] See Figure 1 As shown, the fixed base 1 includes a base 11 and a pressure plate 12 supported on the upper end of the base 11; multiple cutting blade holders 2 are arranged in an array on the side of the pressure plate 12 facing the base 11; rubber pressure strips 3 are arranged at intervals along the horizontal line on the side of the pressure plate 12 facing the base 11, and are alternately arranged with the cutting blade holders 2; one end of the lifting column 4 is connected to the fixed base 1, and the other end is connected to the pressure plate 12.

[0025] In this embodiment of the application, a lifting column 4 is connected between the pressure plate 12 and the base 11, wherein, as shown in the example... Figure 1 As shown, the lifting columns 4 are arranged at the four corners of the base 11 to support the pressure plate 12 and can drive the pressure plate 12 to move vertically. The addition of rubber strips 3 to press and fix the PCB board effectively utilizes the elastic properties of rubber, and achieves a... Figure 2 As shown, the surface of the rubber strip 3 that contacts the PCB board is strip-shaped. That is, the rubber strip 3 can apply pressure to the PCB board evenly to avoid causing excessive local pressure on the PCB board, thereby reducing the possible damage to the PCB board during the cutting process.

[0026] For example, such as Figure 2As shown, three rubber pressure strips 3 are arranged horizontally, used to press the left, right, and middle ends of the PCB board, respectively. The lifting column 4 can drive the pressure plate 12 downwards to move the cutting blade holder 2 located inside the pressure plate 12 towards the PCB board to perform a cutting action, and as shown... Figure 2 As shown, the rubber pressure strip 3 and the cutting blade holder 2 are arranged alternately to ensure the uniformity of the cutting force of the cutting blade holder 2. That is, the fixing method of the rubber pressure strip 3 can effectively fix the PCB board and prevent its displacement and vibration, while ensuring the uniformity of the cut, compared with vacuum adsorption or rigid pressing.

[0027] In some implementation schemes, see Figure 3 As shown, Figure 3 This illustration shows a perspective structural diagram of an embodiment of a rubber pressure strip 3 for a CNC cutting seat of a PCB board provided in this application. The rubber pressure strip 3 includes a rubber strip 31 and a plurality of telescopic rods 32, one end of which is connected to the rubber strip 31 and the other end of which is connected to the pressure plate 12.

[0028] In this embodiment, the rubber strip 31 and the telescopic rod 32 work together to automatically adjust the pressure applied to the PCB board by the rubber strip 31. Specifically, when the pressure is too high, the telescopic rod 32 retracts upwards, and the rubber strip 31 moves upwards to reduce the pressure; when the pressure is too low, the telescopic rod 32 moves downwards, and the rubber strip 31 moves downwards to increase the pressure. This automatically adjusts the pressure and distribution according to the thickness and shape of the PCB board, maintaining the pressure state of the PCB board, further improving the fixing effect on the PCB board, and reducing damage to the PCB board caused by uneven pressure.

[0029] In some embodiments, a spring 321 is wound around the outer ring of the telescopic rod 32. The spring 321 provides additional elastic support, further enhancing the cushioning performance of the telescopic rod 32. Exemplarily, combined with... Figure 1 As shown, the telescopic rod 32 passes through the pressure plate 12 in a vertical direction, and the part of it fitted with the spring 321 is located between the pressure plate 12 and the base 11 to ensure the buffering capacity of the telescopic rod 32 for pressing the PCB board.

[0030] In some implementation schemes, combined Figure 4 As shown, Figure 4 This paper shows a perspective structural schematic diagram of an embodiment of a base 11 for a CNC cutting stand for PCB boards provided in this application. The fixed base 1 also includes a movable plate 111, which is slidably engaged with the base 11 and has an array of cutting grooves 112 that cooperate with the cutting blade holder 2. In actual operation, the operator places the PCB board on the movable plate 111 to perform cutting.

[0031] In some applications, the base 11 is equipped with a guide rail 113, which is used to cooperate with the sliding mechanism. The guide rail 113 guides the movable board 111, ensuring the stability of the PCB assembly and movement, and the sliding method of the guide rail 113 is more labor-saving. This allows workers to place the PCB in an open space and then slide the movable board 111 to the cutting space via the guide rail 113.

[0032] Since the gap between the pressure plate 12 and the base 11 should not be too large, because an excessively large gap will also increase the moving path of the pressure plate 12, resulting in low cutting efficiency, a moving plate 111 and a guide rail 113 are added to allow the PCB board to be pushed into and pushed out of the cutting space in order to improve cutting efficiency.

[0033] In some implementations, a limiting seat 114 is provided at one end of the guide rail 113. In this embodiment, the limiting seat 114 is added to prevent the moving plate 111 from carving out a cutting space along the guide rail 113. The limiting seat 114 also serves as a positioning element for the PCB board; that is, when the PCB board is placed on the moving plate 111, it abuts against the limiting block, thereby limiting one side of the PCB board and ensuring accurate cutting. For example, as shown... Figure 4 As shown, the limiting block corresponds to the guide rail 113, and the limiting block is higher than the moving plate 111.

[0034] In some embodiments, a raised plate 115 is also provided on the side of the movable plate 111 facing the base 11. In this embodiment, the raised plate 115 ensures that the left, right and middle parts of the movable plate 111 are kept on the same horizontal line, thereby avoiding cutting errors caused by the concavity of the PCB board during cutting.

[0035] In some implementation schemes, see Figure 5 As shown, Figure 5 This illustration shows a perspective structural diagram of a cutting blade holder 2 for a CNC cutting stand for PCB boards according to an embodiment of this application. The cutting blade holder 2 has a plurality of cutting blades 21 protruding circumferentially. In this embodiment, the circumferential arrangement of the plurality of cutting blades 21 ensures that PCB board waste is removed from the PCB board, and the simultaneous cutting by the plurality of cutting blades 21 improves cutting efficiency and maintains uniform force on the PCB board during cutting. For example, in conjunction with... Figure 4 As shown, the shape of the cutting blade holder 2 corresponds to the cutting groove 112.

[0036] In some embodiments, this application also provides a cutting device, including the above-described CNC cutting stand for PCB boards.

[0037] In this embodiment of the application, one or more CNC cutting seats for PCB boards can be installed in the frame of a cutting equipment. This cutting equipment integrates all the technical effects of the aforementioned CNC cutting seats for PCB boards, which will not be described in detail here.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, should be included within the protection scope of this utility model.

Claims

1. A CNC cutting stand for PCB boards, characterized in that, include: The fixed base (1) includes a base (11) and a pressure plate (12) supported on the upper end of the base (11). Cutting blade holders (2), multiple cutting blade holders (2) are arranged in an array on the side of the pressure plate (12) facing the base (11); Rubber strips (3) are arranged at intervals along the horizontal line on the side of the pressure plate (12) facing the base (11), and are alternately arranged with the cutting blade holder (2); The lifting column (4) is connected at one end to the fixed seat (1) and at the other end to the pressure plate (12).

2. The CNC cutting stand for PCB boards according to claim 1, characterized in that, The rubber pressure strip (3) includes a rubber strip (31) and a plurality of telescopic rods (32). One end of the telescopic rod (32) is connected to the rubber strip (31), and the other end is connected to the pressure plate (12).

3. The CNC cutting stand for PCB boards according to claim 2, characterized in that, A spring (321) is wound around the outer ring of the telescopic rod (32).

4. The CNC cutting stand for PCB boards according to claim 1, characterized in that, The fixed base (1) also includes a movable plate (111), which is slidably engaged with the base (11) and has an array of cutting grooves (112) that engage with the cutting blade holder (2). The PCB board can be placed between the movable plate (111) and the rubber strip (3).

5. The CNC cutting stand for PCB boards according to claim 4, characterized in that, The base (11) is provided with a guide rail (113), which is used to slide with the movable part.

6. The CNC cutting stand for PCB boards according to claim 5, characterized in that, A limiting seat (114) is provided at one end of the guide rail (113).

7. The CNC cutting stand for PCB boards according to claim 4, characterized in that, A raised plate (115) is also provided on the side of the movable plate (111) facing the base (11).

8. The CNC cutting stand for PCB boards according to claim 1, characterized in that, The cutting blade holder (2) is provided with a plurality of cutting blades (21) protruding in the circumferential direction.

9. A cutting device, characterized in that, Includes the CNC cutting stand for PCB boards as described in any one of claims 1 to 8.

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