A presser foot cup for a circuit board drill

Abstract

The utility model discloses a kind of for line board drilling machine's presser foot cup, comprising: cup body, the outer wall upper end of cup body is equipped with the annular baffle extending outward, the upper surface of annular baffle is equipped with annular groove, annular groove is inlaid with sealing ring. The upper end surface of sealing ring is higher than the upper surface of annular baffle. Pressing device, pressing device includes pressing nut and pressing spring, pressing nut is threadedly connected at the lower end outside of cup body, pressing spring is sleeved in the outside of cup body, and the upper end of pressing spring is in abutment with the lower surface of annular baffle, the lower end of pressing spring is in abutment with the upper surface of pressing nut, for by rotating pressing nut, the compression of adjustable pressing spring, to change the pressing force of annular baffle, realize the adaptability pressing of different thickness and hardness of the workpiece to be processed, improve the stability and precision of drilling.

Description

Technical Field

[0001] This utility model relates to the field of drilling machine technology, and specifically to a pressure foot cup for a circuit board drilling machine. Background Technology

[0002] Presser foot cups are typically used in the PCB drilling process. By pressing down on the PCB board, the presser foot cup facilitates subsequent drilling positioning and improves the accuracy of the drilling process. PCB drilling is a key process in the entire printed circuit board production process. It mainly uses a PCB drilling machine equipped with a high-speed spindle and drill bit to drill holes in the circuit board. The presser foot switching device is the main execution component of the PCB drilling machine during drilling. The presser foot switching device is generally installed at the lower end of the spindle. During the drilling process, the presser foot switching device must not only hold the workpiece (i.e., the PCB board) and keep it stable and flat, but also frequently adjust the size of the presser foot hole during the frequent switching of drill bits of different diameters to match the corresponding diameter drill bit. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a pressure foot cup for a circuit board drilling machine, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts a pressure foot cup for a circuit board drilling machine, comprising: The cup body has an outwardly extending annular flange at its upper outer wall. An annular groove is provided on the upper surface of the flange, and a sealing ring is embedded within the groove. The upper surface of the sealing ring is higher than the upper surface of the annular flange.

[0005] A clamping device includes a clamping nut and a clamping spring. The clamping nut is threaded to the outer side of the lower end of the cup body, and the clamping spring is sleeved on the outer side of the cup body. The upper end of the clamping spring abuts against the lower surface of the annular retaining edge, and the lower end of the clamping spring abuts against the upper surface of the clamping nut. By rotating the clamping nut, the compression of the clamping spring can be adjusted, thereby changing the clamping force of the annular retaining edge. This allows for adaptive clamping of workpieces with different thicknesses and hardnesses, improving the stability and accuracy of drilling.

[0006] This invention provides a pressure foot cup for a circuit board drilling machine. Because the compression of the pressure spring can be adjusted by rotating the pressure nut, the clamping force of the annular retaining edge can be changed, allowing the pressure foot cup to adapt to workpieces of different thicknesses. In actual circuit board drilling, the thickness of the circuit board may vary. For example, circuit boards used in small electronic devices may be thinner, while those used in large industrial equipment may be relatively thicker. This adjustable clamping force design ensures that the circuit board is firmly clamped regardless of its thickness, avoiding unstable clamping caused by differences in workpiece thickness during drilling. The sealing ring is used to seal the pressure foot cup when it mates with the pressure foot seat of the drilling machine, preventing dust and debris from entering the pressure foot seat. It also provides a certain degree of cushioning, reducing hard impacts between the pressure foot cup and the pressure foot seat, and extending the service life of the pressure foot seat.

[0007] In some embodiments, the presser cup further includes a presser plate assembly, which includes a sliding base, a sliding plate, a telescopic cylinder, a first presser ring, and a second presser ring. The sliding base is located at the bottom of the cup body and has a guide hole corresponding to the cup body. The sliding plate is located within the guide hole. The telescopic cylinder is located at one end of the sliding base, and its driving end passes through the sliding base and connects to the sliding plate. The sliding plate has a first drilled hole and a second drilled hole. The first presser ring and the second presser ring are correspondingly fitted into the first drilled hole and the second drilled hole, respectively, for driving the sliding plate to slide along the guide hole via the telescopic cylinder, so that the first drilled hole or the second drilled hole corresponds to the cup body.

[0008] By employing the above technical solution, a telescopic cylinder drives a sliding plate along the guide hole, enabling rapid switching between the first and second drill holes and the pressure foot cup. This design allows the pressure foot cup to adapt to different drilling position requirements. For example, in some complex circuit board drilling tasks, drilling may need to be performed in different locations. Traditional pressure foot cups may require readjusting the entire pressure foot cup position or replacing the pressure foot cup to adapt to the new drilling position. However, this pressure foot cup with a pressure foot plate assembly can easily switch drilling positions simply by moving the sliding plate via a cylinder, greatly improving drilling flexibility. The first and second pressure foot rings are respectively fitted into the first and second drill holes, and can be selected according to different drilling modes. For example, for some high-precision drilling, the first pressure foot ring can be used, which may have a more refined clamping structure; while for some cases with relatively low precision requirements or larger drill hole sizes, the second pressure foot ring can be switched to. This design can meet the needs of multiple drilling modes, making the pressure foot cup more applicable and improving the versatility of the equipment.

[0009] In some embodiments, an annular limiting boss is provided on the upper end of the inner wall of the cup body. The inner diameter of the annular limiting boss is smaller than the inner diameter of the cup body. It is used to limit the insertion depth of the presser foot rod, prevent the presser foot rod from being over-inserted and causing the threaded fit between the presser foot cup and the presser foot rod to fail. At the same time, it can also prevent the presser foot rod from axially moving during drilling to a certain extent, thereby improving the stability of drilling.

[0010] By employing the above technical solution, the annular limiting boss restricts the insertion depth of the presser foot rod, preventing excessive insertion that could lead to failure of the threaded fit between the presser foot cup and the presser foot rod. By limiting the axial movement of the presser foot rod, it ensures that the drill bit can accurately drill along a predetermined trajectory during drilling, reducing problems such as drilling position deviation and uneven hole diameter, thereby improving drilling accuracy.

[0011] In some embodiments, the bottom of the sliding base is further provided with a plurality of mounting guide holes and a limiting piece. The plurality of mounting guide holes are provided on both sides of the guide waist hole, and the limiting piece is provided below the guide waist hole and is bolted to the plurality of mounting guide holes.

[0012] Using the above technical solution, the limiting plate is located below the guide hole and is connected and fixed to the mounting guide hole bolt, which can effectively limit the movement range of the skateboard. This design can prevent the skateboard from exceeding the predetermined range during movement, ensuring that the movement of the skateboard is always within the control range of the guide hole. Through the precise limiting of the limiting plate, the movement of the skateboard can be more accurate, thereby improving the accuracy of the drilling position.

[0013] In some embodiments, the sealing ring is a rubber sealing ring or a silicone sealing ring.

[0014] By adopting the above technical solutions, rubber or silicone sealing rings have good elasticity and sealing performance, can adapt to different working environments and temperature changes, and ensure the stability of the sealing effect.

[0015] In some embodiments, the outer side of the clamping nut is provided with anti-slip texture.

[0016] By adopting the above technical solution, the anti-slip texture is used to increase the friction force when the operator rotates the clamping nut, which facilitates quick and accurate adjustment of the compression amount of the clamping spring, thereby improving the convenience and efficiency of operation.

[0017] In some embodiments, the outer wall of the cup is also provided with scale markings.

[0018] Using the above technical solution, the scale markings are used to indicate the position of the presser foot cup on the presser foot rod, which makes it easy for operators to quickly and accurately adjust the position of the presser foot cup according to different drilling requirements and workpiece thickness, thereby improving the accuracy and consistency of drilling.

[0019] In some embodiments, the compression spring is a cylindrical helical spring.

[0020] By adopting the above technical solution, the cylindrical helical spring has good elasticity and stability, and can maintain a stable spring force output within a large compression range, ensuring the uniformity and reliability of the clamping force. Attached Figure Description

[0021] Figure 1 This is a three-dimensional embodiment of a pressure foot cup for a circuit board drilling machine according to the present invention. Figure 1 ; Figure 2 This is a three-dimensional embodiment of a pressure foot cup for a circuit board drilling machine according to the present invention. Figure 2 ; In the picture: 10. Cup body; 11. Annular flange; 12. Annular groove; 13. Sealing ring; 14. Pressing device; 15. Pressing nut; 16. Pressing spring; 20. Sliding base; 21. Guide hole; 22. Slide plate; 23. Telescopic cylinder; 24. First presser foot ring; 25. Second presser foot ring; 26. Mounting guide hole. Detailed Implementation

[0022] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0023] refer to Figure 1 and Figure 2 , Figure 1 This invention illustrates a three-dimensional representation of a pressure foot cup for a circuit board drilling machine according to an embodiment of the present invention. Figure 1 ; Figure 2 This invention illustrates a three-dimensional representation of a pressure foot cup for a circuit board drilling machine according to an embodiment of the present invention. Figure 2 .

[0024] like Figure 1 and Figure 2 As shown, the technical solution adopted by this utility model is a pressure foot cup for a circuit board drilling machine, comprising: The cup body 10 has an outwardly extending annular flange 11 on its upper outer wall. An annular groove 12 is provided on the upper surface of the annular flange 11, and a sealing ring 13 is embedded in the annular groove 12. The upper end surface of the sealing ring 13 is higher than the upper surface of the annular flange 11.

[0025] The clamping device 14 includes a clamping nut 15 and a clamping spring 16. The clamping nut 15 is threaded to the outer side of the lower end of the cup body 10. The clamping spring 16 is sleeved on the outer side of the cup body 10, with the upper end of the clamping spring 16 abutting against the lower surface of the annular retaining edge 11 and the lower end of the clamping spring 16 abutting against the upper surface of the clamping nut 15. By rotating the clamping nut 15, the compression of the clamping spring 16 can be adjusted, thereby changing the clamping force of the annular retaining edge 11. This allows for adaptive clamping of workpieces with different thicknesses and hardnesses, improving the stability and accuracy of drilling.

[0026] This utility model provides a pressure foot cup for a circuit board drilling machine. Because the compression of the pressure spring 16 can be adjusted by rotating the pressure nut 15, the clamping force of the annular flange 11 can be changed, allowing the pressure foot cup to adapt to workpieces of different thicknesses. In actual circuit board drilling, the thickness of the circuit board may vary. For example, circuit boards used in small electronic devices may be thinner, while those used in large industrial equipment may be relatively thicker. This adjustable clamping force design ensures that the circuit board is firmly clamped regardless of its thickness, avoiding unstable clamping due to differences in workpiece thickness during drilling. The sealing ring 13 acts as a seal when the pressure foot cup mates with the pressure foot seat of the drilling machine, preventing dust and debris from entering the pressure foot seat. It also provides a certain buffering effect, reducing hard impacts between the pressure foot cup and the pressure foot seat, and extending the service life of the pressure foot seat.

[0027] In some embodiments, reference Figure 1 and Figure 2 The presser cup also includes a presser plate assembly, which includes a sliding base 20, a sliding plate 22, a telescopic cylinder 23, a first presser ring 24, and a second presser ring 25. The sliding base 20 is located at the bottom of the cup body 10 and has a guide hole 21 corresponding to the cup body 10. The sliding plate 22 is located inside the guide hole 21. The telescopic cylinder 23 is located at one end of the sliding base 20, and its driving end passes through the sliding base 20 and connects to the sliding plate 22. The sliding plate 22 has a first drilled hole and a second drilled hole. The first presser ring 24 and the second presser ring 25 are correspondingly fitted into the first drilled hole and the second drilled hole, respectively, for driving the sliding plate 22 to slide along the guide hole 21 through the telescopic cylinder 23, so that the first drilled hole or the second drilled hole corresponds to the cup body 10.

[0028] Using the above technical solution, the sliding plate 22 is driven by the telescopic cylinder 23 to slide along the guide waist hole 21, which can quickly switch the correspondence between the first and second drill holes and the cup body 10. This design allows the pressure foot cup to adapt to different drilling position requirements. For example, in some complex circuit board drilling tasks, drilling may need to be performed in different positions. Traditional pressure foot cups may require readjusting the entire position of the pressure foot cup or replacing the pressure foot cup to adapt to the new drilling position. However, this pressure foot cup with a pressure foot plate assembly can easily switch drilling positions simply by moving the sliding plate 22 driven by the cylinder, greatly improving the flexibility of drilling. The first pressure foot ring 24 and the second pressure foot ring 25 are respectively fitted into the first and second drill holes and can be selected according to different drilling modes. For example, for some drilling with high precision requirements, the first pressure foot ring 24 can be used, which may have a more refined clamping structure; while for some cases with relatively low precision requirements or larger drill hole sizes, the second pressure foot ring 25 can be switched. This design can meet the needs of multiple drilling modes, making the pressure foot cup more applicable and improving the versatility of the equipment.

[0029] In some embodiments, an annular limiting boss is provided at the upper end of the inner wall of the cup body 10. The inner diameter of the annular limiting boss is smaller than the inner diameter of the cup body 10. It is used to limit the insertion depth of the presser foot rod, prevent the presser foot rod from being over-inserted and causing the threaded fit between the presser foot cup and the presser foot rod to fail. At the same time, it can also prevent the presser foot rod from axially moving during the drilling process to a certain extent, thereby improving the stability of the drilling.

[0030] For example, the annular limiting boss restricts the insertion depth of the presser foot rod, preventing excessive insertion that could lead to failure of the threaded fit between the presser foot cup and the presser foot rod. By limiting the axial movement of the presser foot rod, it ensures that the drill bit can accurately drill along a predetermined trajectory during drilling, reducing problems such as drilling position deviation and uneven hole diameter, thereby improving drilling accuracy.

[0031] In some embodiments, reference Figure 1 and Figure 2 The bottom of the sliding base 20 is also provided with multiple mounting guide holes 26 and limiting pieces. The multiple mounting guide holes 26 are located on both sides of the guide waist hole 21, and the limiting pieces are located below the guide waist hole 21 and are bolted to the multiple mounting guide holes 26 for fixation.

[0032] For example, a limiting piece is located below the guide hole 21 and is bolted to the mounting guide hole 26, effectively limiting the movement range of the slide plate 22. This design prevents the slide plate 22 from exceeding the predetermined range during movement, ensuring that the movement of the slide plate 22 is always within the control range of the guide hole 21. The precise limiting of the limiting piece ensures more accurate movement of the slide plate 22, thereby improving the accuracy of the drilling position.

[0033] In some embodiments, the sealing ring 13 is a rubber sealing ring 13 or a silicone sealing ring 13.

[0034] For example, the rubber sealing ring 13 or the silicone sealing ring 13 has good elasticity and sealing performance, and can adapt to different working environments and temperature changes, ensuring the stability of the sealing effect.

[0035] In some embodiments, the outer side of the clamping nut 15 is provided with anti-slip texture.

[0036] For example, the anti-slip texture is used to increase the friction when the operator rotates the clamping nut 15, which facilitates quick and accurate adjustment of the compression of the clamping spring 16, thereby improving the convenience and efficiency of operation.

[0037] In some embodiments, the outer wall of the cup body 10 is also provided with scale markings.

[0038] For example, the scale markings are used to indicate the position of the presser foot cup on the presser foot rod, so that the operator can quickly and accurately adjust the position of the presser foot cup according to different drilling requirements and workpiece thickness, thereby improving the accuracy and consistency of drilling.

[0039] In some embodiments, the compression spring 16 is a cylindrical helical spring.

[0040] For example, cylindrical helical springs have good elasticity and stability, and can maintain a stable spring force output over a large compression range, ensuring the uniformity and reliability of the clamping force.

[0041] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A pressure foot cup for a circuit board drilling machine, characterized in that, include: The cup body has an outwardly extending annular baffle at the upper end of its outer wall. The upper surface of the annular baffle has an annular groove, and a sealing ring is embedded in the annular groove. The upper end face of the sealing ring is higher than the upper surface of the annular baffle. A clamping device, comprising a clamping nut and a clamping spring, wherein the clamping nut is threadedly connected to the outer side of the lower end of the cup body, and the clamping spring is sleeved on the outer side of the cup body, with the upper end of the clamping spring abutting against the lower surface of the annular flange and the lower end of the clamping spring abutting against the upper surface of the clamping nut, for adjusting the compression amount of the clamping spring by rotating the clamping nut; It also includes a presser foot assembly, which includes a sliding base, a sliding plate, a telescopic cylinder, a first presser foot ring, and a second presser foot ring. The sliding base is located at the bottom of the cup body and has a guide waist hole corresponding to the cup body. The sliding plate is located in the guide waist hole. The telescopic cylinder is located at one end of the sliding base, and its driving end passes through the sliding base and connects to the sliding plate. The sliding plate has a first drilled hole and a second drilled hole. The first presser foot ring and the second presser foot ring are correspondingly fitted into the first drilled hole and the second drilled hole, respectively, for driving the sliding plate to slide along the guide waist hole through the telescopic cylinder, so that the first drilled hole or the second drilled hole corresponds to the cup body.

2. The presser cup according to claim 1, characterized in that, The upper end of the inner wall of the cup body is provided with an annular limiting boss. The inner diameter of the annular limiting boss is smaller than the inner diameter of the cup body, which is used to limit the insertion depth of the presser foot rod.

3. The presser cup according to claim 1, characterized in that, The bottom of the sliding base is also provided with multiple mounting guide holes and limiting plates. The multiple mounting guide holes are located on both sides of the guide waist hole, and the limiting plates are located below the guide waist hole and are bolted to the multiple mounting guide holes for fixation.

4. The presser cup according to claim 1, characterized in that, The sealing ring is a rubber sealing ring or a silicone sealing ring.

5. The presser foot cup according to claim 1, characterized in that, The outer side of the clamping nut is provided with anti-slip texture.

6. The presser cup according to claim 1, characterized in that, The outer wall of the cup is also marked with graduations.

7. The presser cup according to claim 1, characterized in that, The compression spring is a cylindrical helical spring.

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