Guide structure for guiding drill bit

Abstract

The utility model relates to the technical field of PCB (Printed Circuit Board) processing, and provides a guide structure for guiding a drill bit, which is suitable for a PCB drilling machine, the PCB drilling machine comprises a sliding block, the drill bit and a driving mechanism, the drill bit is arranged on the sliding block, the driving mechanism is used for driving the sliding block to move along the vertical direction, and the guide structure for guiding the drill bit comprises a mounting seat and a guide piece, the driving mechanism is mounted on the mounting base, a guide column is fixedly connected to the mounting base, the sliding block is slidably connected with the guide column, the guide part is detachably connected to the lower end of the mounting base, a sliding groove is formed in the guide part and penetrates through the upper surface and the lower surface of the guide part, and the drill bit is slidably connected with the sliding groove. Firstly, the movement precision of the sliding block and the drill bit can be improved through the arrangement of the guide column; and secondly, due to the arrangement of the guide piece, the movement precision of the drill bit can be further improved, and therefore the yield of the PCBs is improved. The guide piece directly acts on the drill bit, namely is directly used for guiding the drill bit, so that the influence caused by lower assembly precision of the drill bit and the sliding block can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board processing, in particular to a guide structure for guiding a drill bit. Background Art

[0002] PCB board, also known as printed circuit board, is the support body of electronic components and the carrier of electrical connection of electronic components. It is widely used in almost all electronic devices. It has the dual function of conductive lines and insulating base plate, which can replace complex wiring and realize electrical connection between various components in the circuit.

[0003] During the production of PCBs, a PCB drilling machine is typically used to drill holes in the PCBs. In the prior art, a PCB drilling machine includes a slider, a drill bit, a drive mechanism, guide posts, and a mounting base. The drill bit is mounted on the slider, the drive mechanism is mounted on the mounting base, and is used to drive the slider to move the slider and the drill bit in an upward and downward direction. The guide posts are mounted on the mounting base, and the slider is slidably connected to the guide posts. The provision of the guide posts improves the movement accuracy of the drill bit in existing PCB drilling machines, thereby improving the drilling quality and, in turn, the yield rate of the PCBs. However, the yield rate of PCBs produced by existing PCB drilling machines remains relatively low. Utility Model Content

[0004] The purpose of the utility model is to provide a guide structure for guiding a drill bit, aiming to solve the technical problem that the movement accuracy of the drill bit of the existing PCB board drilling machine is low, resulting in a low yield rate of PCB boards.

[0005] The present application provides a guide structure for guiding a drill bit, which is suitable for a PCB board drilling machine. The PCB board drilling machine includes a slider, a drill bit and a driving mechanism. The drill bit is installed on the slider. The driving mechanism is used to drive the slider to move in the up and down directions. The guide structure for guiding the drill bit includes a mounting seat and a guide member. The driving mechanism is installed on the mounting seat. A guide column is fixedly connected to the mounting seat. The slider is slidably connected to the guide column. The guide member is detachably connected to the lower end of the mounting seat. The guide member is provided with a slide groove. The slide groove runs through the upper and lower surfaces of the guide member. The drill bit is slidably connected to the slide groove.

[0006] The beneficial effects of the guide structure for guiding a drill bit provided by the present invention are as follows: during operation, the drive mechanism drives the slider to move downward, thereby driving the drill bit to move downward. At the same time, the slider slides along the surface of the guide rod, and the drill bit slides along the wall surface of the slide groove inside the guide member. After the PCB board drilling machine completes the hole processing operation on the PCB board, the drive mechanism drives the slider to move upward, thereby driving the drill bit to move upward, thus achieving reset. First, the provision of the guide post can improve the movement accuracy of the slider and the drill bit. Second, the provision of the guide member can further improve the movement accuracy of the drill bit, thereby improving the yield rate of the PCB board. This is because the guide member directly acts on the drill bit, that is, it is directly used to guide the drill bit, which can reduce the impact caused by the low assembly accuracy of the drill bit and the slider. If the drill bit is not installed properly, for example, the drill bit is slightly tilted in the vertical direction, it is easy to drill the hole off-center. In serious cases, it can also cause cracks in the PCB board, affecting the use of the PCB board.

[0007] In addition, by configuring the guide member to be detachably connected to the mounting base, when the guide member can no longer be used, only the guide member needs to be replaced without replacing the entire mounting base. This reduces costs and shortens the maintenance time of the PCB board drilling machine to ensure production efficiency.

[0008] Optionally, the guide structure for guiding the drill bit also includes a fastener, the mounting seat is provided with a threaded hole, the guide piece is provided with a mounting hole, the mounting hole is a through hole structure, and the fastener passes through the mounting hole and is threadedly connected to the threaded hole.

[0009] Optionally, the guide member includes a guide portion and a connecting portion, the mounting hole is provided in the connecting portion, the connecting portion is detachably connected to the mounting seat, the guide portion is fixedly connected to the surface of the connecting portion away from the threaded hole, and the guide portion is provided with a sliding groove.

[0010] Optionally, two threaded holes and two mounting holes are provided, and they correspond one to one, and the two mounting holes are respectively located on the left and right sides of the guide portion.

[0011] Optionally, the connecting portion is provided with two positioning holes, which are respectively located on the left and right sides of the guide portion. Two positioning pins are embedded in the mounting seat, and the two positioning pins correspond one-to-one to the two positioning holes. The positioning pins are used to position the positioning holes.

[0012] Optionally, the connecting portion is provided with an anti-fool hole, and the mounting seat is embedded with an anti-fool pin, and the anti-fool hole is used for inserting the anti-fool pin.

[0013] Optionally, the diameter of the fool-proof hole is 1 to 2 mm larger than the diameter of the fool-proof pin.

[0014] Optionally, a groove is formed on the surface of the guide member close to the mounting seat.

[0015] Optionally, the upper end of the slide groove is provided with a chamfer.

[0016] Optionally, a buffer pad is installed on the surface of the guide member close to the slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 A schematic structural diagram of a PCB drilling machine provided in an embodiment of the present utility model;

[0019] Figure 2 A front view of a guide structure for guiding a drill bit provided in an embodiment of the present utility model;

[0020] Figure 3 A schematic structural diagram of a guide structure for guiding a drill bit provided in an embodiment of the present utility model;

[0021] Figure 4 A schematic structural diagram of a guide member provided in an embodiment of the present utility model;

[0022] Figure 5 A cross-sectional view of a guide member provided in an embodiment of the present utility model.

[0023] Among them, the reference numerals in the figures are:

[0024] 100. PCB board drilling machine; 10. Guide piece; 20. Mounting seat;

[0025] 30. Slider; 40. Drill bit; 50. Driving mechanism;

[0026] 11. Connecting portion; 12. Guide portion; 111. Mounting hole;

[0027] 112. Positioning hole; 113. Anti-fouling hole; 114. Groove;

[0028] 121. chute; 122. buffer pad; 1211. chamfer;

[0029] 21. Guide pin; 22. Threaded hole; 23. Positioning pin;

[0030] 24. Anti-fouling pins. DETAILED DESCRIPTION

[0031] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout this specification, not all references are to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0033] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0035] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0036] Please refer to Figures 1 to 5 Now, the guide structure for guiding the drill bit in the embodiment of the present invention is described.

[0037] Please refer to Figures 1 to 3, a guide structure for guiding a drill bit provided in the present application is suitable for a PCB board drilling machine 100, the PCB board drilling machine 100 includes a slider 30, a drill bit 40 and a driving mechanism 50, the drill bit 40 is installed on the slider 30, the driving mechanism 50 is used to drive the slider 30 to move in the up and down directions, the guide structure for guiding the drill bit includes a mounting seat 20 and a guide member 10, the driving mechanism 50 is installed on the mounting seat 20, a guide column 21 is fixedly connected to the mounting seat 20, the guide column 21 extends in the up and down directions, the slider 30 is slidably connected to the guide column 21, the guide member 10 is detachably connected to the lower end of the mounting seat 20, the guide member 10 is provided with a slide groove 121, the slide groove 121 passes through the upper and lower surfaces of the guide member 10, and the drill bit 40 is slidably connected to the slide groove 121.

[0038] During operation, the drive mechanism 50 drives the slider 30 downward, thereby driving the drill bit 40 downward. Simultaneously, the slider 30 slides along the surface of the guide rod, and the drill bit 40 slides along the wall of the guide slot 121 within the guide member 10. After the PCB drilling machine 100 completes drilling a hole in the PCB, the drive mechanism 50 drives the slider 30 upward, thereby driving the drill bit 40 upward, thus achieving a reset. First, the provision of the guide post 21 improves the motion accuracy of the slider 30 and drill bit 40. Second, the provision of the guide member 10 further improves the motion accuracy of the drill bit 40, thereby improving the yield rate of PCB boards. This is because the guide member 10 directly acts on the drill bit 40, directly guiding it. This reduces the impact of low assembly precision between the drill bit 40 and the slider 30. If the drill bit 40 is not properly installed, for example, if it is slightly tilted vertically, the hole can easily be drilled off-center. In severe cases, this can cause cracks in the PCB board, affecting its usability.

[0039] In addition, by configuring the guide member 10 to be detachably connected to the mounting base 20, when the guide member 10 can no longer be used, only the guide member 10 needs to be replaced without replacing the entire mounting base 20. This reduces costs and shortens the maintenance time of the PCB board drilling machine 100 to ensure production efficiency.

[0040] It is understandable that the drill bit 40 includes a mounting portion and a rotating portion that are connected to each other. The mounting portion is fixedly connected to the slider 30 and slidably connected to the slide groove 121. The rotating portion can rotate to drill a hole on the PCB board.

[0041] In another embodiment of this application, please refer to Figures 2 to 4The guide structure for guiding the drill bit also includes a fastener (not shown). The mounting seat 20 is provided with a threaded hole 22, and the guide member 10 is provided with a mounting hole 111. The mounting hole 111 is a through-hole structure. The fastener passes through the mounting hole 111 and is threadedly connected to the threaded hole 22. Specifically, the threaded hole 22 is provided on the rear surface of the mounting seat 20, and the mounting hole 111 is provided on the front surface of the guide member 10. The fastener passes through the rear surface of the guide member 10 in the front-to-back direction, so that the mounting hole 111 is constructed as a through-hole structure. In this embodiment, the guide member 10 and the mounting seat 20 are detachably connected by fastener locking. Compared with methods such as clipping and bonding, this embodiment can provide the guide member 10 and the mounting seat 20 with a higher connection strength.

[0042] It is understandable that the fasteners may be screws, bolts or other connectors with external thread structures, as long as they can connect the guide member 10 and the mounting seat 20 together, and are not limited here.

[0043] In another embodiment of this application, please refer to Figures 1 to 4 The guide member 10 includes a guide portion 12 and a connecting portion 11. A mounting hole 111 is provided in the connecting portion 11. The connecting portion 11 is detachably connected to the mounting seat 20. The guide portion 12 is fixedly connected to the surface of the connecting portion 11 facing away from the threaded hole 22. The guide portion 12 is provided with a slide groove 121. Specifically, the mounting hole 111 is provided on the front surface of the connecting portion 11 and passes through the rear surface of the connecting portion 11 in the front-to-back direction. The guide portion 12 is fixedly connected to the rear surface of the connecting portion 11. The left surface of the connecting portion 11 protrudes from the left surface of the guide portion 12, and the right surface of the connecting portion 11 protrudes from the right surface of the guide portion 12. The slide groove 121 passes through the upper and lower surfaces of the guide portion 12 in the up-down direction. In this embodiment, the mounting hole 111 only needs to pass through the front and back surfaces of the connecting portion 11, and does not need to pass through the front and back surfaces of the entire guide member 10, which can shorten the processing time and thus improve production efficiency.

[0044] It is understood that the connecting portion 11 and the guide portion 12 can be an integral structure or a split structure, which is not limited here. In this embodiment, the connecting portion 11 and the guide portion 12 are an integral structure to improve the connection strength between the two and at the same time, reduce the difficulty of assembling the guide member 10.

[0045] In another embodiment of this application, please refer to Figure 3 There are two threaded holes 22 and two mounting holes 111, each corresponding to the other. The two mounting holes 111 are located on the left and right sides of the guide portion 12, respectively. There are two fasteners, each passing through the two mounting holes 111 and threadedly engaged with the corresponding threaded holes 22. This arrangement ensures that the guide member 10 is subjected to uniform force, ensuring the guiding function of the guide portion 12 and, therefore, the movement accuracy of the drill bit 40.

[0046] In another embodiment of this application, please refer to Figure 3 The connecting part 11 is provided with two positioning holes 112, and the two positioning holes are respectively located on the left and right sides of the guide part 12. Two positioning pins 23 are embedded in the mounting seat 20. The two positioning pins 23 correspond to the two positioning holes 112 one by one, and the positioning pins 23 are used to position the positioning holes 112. Specifically, the positioning holes 112 are provided on the front surface of the connecting part 11 and pass through the rear surface of the connecting part 11. Both positioning pins 23 protrude from the rear surface of the mounting seat 20. When the connecting part 11 is connected to the mounting seat 20, the two positioning pins 23 are respectively inserted into the two positioning holes 112. The provision of the positioning pins 23 and the positioning holes 112 greatly improves the installation accuracy of the connecting part 11 and the mounting seat 20, thereby ensuring the guiding function of the guide part 12, and further ensuring the movement accuracy of the drill bit 40.

[0047] In some embodiments, a chamfer 1211 is provided at the front end of the positioning hole 112 to facilitate the insertion of the positioning pin 23 into the positioning hole 112 .

[0048] In another embodiment of this application, please refer to Figure 3 The connecting portion 11 is provided with an anti-fouling hole 113, and the mounting base 20 is embedded with an anti-fouling pin 24. The anti-fouling hole 113 is used to insert the anti-fouling pin 24. Specifically, the anti-fouling hole 113 is provided on the front surface of the connecting portion 11 and passes through the rear surface of the connecting portion 11. When the connecting portion 11 is connected to the mounting base 20, the anti-fouling pin 24 is inserted into the anti-fouling hole 113. The provision of the anti-fouling pin 24 and the anti-fouling hole 113 can ensure that the connecting portion 11 is installed in place and prevent the connecting portion 11 from being installed upside down, which would cause the guide portion 12 to fail to guide the drill bit 40.

[0049] It is understandable that the fool-proof hole 113 can be located on the left side of the guide portion 12 or on the right side of the guide portion 12, which is not limited here. In this embodiment, the fool-proof hole 113 is located on the left side of the guide portion 12.

[0050] In another embodiment of the present application, the diameter of the foolproof hole 113 is 1 to 2 mm larger than the diameter of the foolproof pin 24. This configuration allows the foolproof pin 24 to be smoothly inserted into the foolproof hole 113, thereby reducing the difficulty of assembling the connecting portion 11 and the mounting seat 20, thereby improving the efficiency of their assembly and disassembly.

[0051] In another embodiment of this application, please refer to Figure 5The guide member 10 has a groove 114 formed on its surface adjacent to the mounting seat 20. Specifically, the groove 114 is formed on the front surface of the connecting portion 11. The provision of the groove 114 reduces the contact area between the connecting portion 11 and the mounting seat 20, thereby reducing the possibility of improper assembly of the connecting portion 11 and the mounting seat 20 due to particles and other debris adhering to the front surface of the connecting portion 11, thereby ensuring the movement accuracy of the drill bit 40.

[0052] Furthermore, the groove 114 passes through the upper and lower surfaces of the connecting portion 11 in the up-down direction, so as to further reduce the contact area between the connecting portion 11 and the mounting seat 20 .

[0053] In another embodiment of this application, please refer to Figure 5 The upper end of the chute 121 is provided with a chamfer 1211. Such arrangement facilitates the insertion of the drill bit 40 into the chute 121.

[0054] In another embodiment of this application, please refer to Figures 1 to 5 A buffer pad 122 is mounted on the surface of the guide member 10 near the slider 30. Specifically, a groove is defined on the upper surface of the guide portion 12, into which the buffer pad 122 is mounted. The upper surface of the buffer pad 122 protrudes beyond the upper surfaces of the guide portion 12 and the connecting portion 11. The provision of the buffer pad 122 prevents hard collisions between the slider 30 and the guide member 10, thereby extending the service life of the guide member 10 and protecting the drill bit 40.

[0055] It is understandable that the material of the buffer pad 122 can be silicone or rubber, etc., as long as the buffer pad 122 can play a buffering role, and is not limited here.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A guide structure for guiding a drill bit, suitable for a PCB board drilling machine (100), wherein the PCB board drilling machine (100) comprises a slider (30), a drill bit (40) and a driving mechanism (50), wherein the drill bit (40) is mounted on the slider (30), and the driving mechanism (50) is used to drive the slider (30) to move in an up-down direction, characterized in that: The guide structure for guiding the drill bit (40) comprises: A mounting seat (20), the driving mechanism (50) is mounted on the mounting seat (20), a guide post (21) is fixedly connected to the mounting seat (20), and the slider (30) is slidably connected to the guide post (21); The guide member (10) is detachably connected to the lower end of the mounting seat (20), and the guide member (10) is provided with a slide groove (121). The slide groove (121) runs through the upper and lower surfaces of the guide member (10), and the drill bit (40) is slidably connected to the slide groove (121).

2. The guide structure for guiding a drill bit according to claim 1, characterized in that: It also includes a fastener, the mounting seat (20) is provided with a threaded hole (22), the guide member (10) is provided with a mounting hole (111), the mounting hole (111) is a through-hole structure, and the fastener passes through the mounting hole (111) and is threadedly connected to the threaded hole (22).

3. The guide structure for guiding a drill bit according to claim 2, characterized in that: The guide member (10) comprises a guide portion (12) and a connecting portion (11); the mounting hole (111) is provided in the connecting portion (11); the connecting portion (11) is detachably connected to the mounting seat (20); the guide portion (12) is fixedly connected to a surface of the connecting portion (11) facing away from the threaded hole (22); and the guide portion (12) is provided with the sliding groove (121).

4. The guide structure for guiding a drill bit according to claim 3, characterized in that: There are two threaded holes (22) and two mounting holes (111), which correspond to each other one by one. The two mounting holes (111) are respectively located on the left and right sides of the guide portion (12).

5. The guide structure for guiding a drill bit according to claim 4, characterized in that: The connecting portion (11) is provided with two positioning holes (112), the two positioning holes being located on the left and right sides of the guide portion (12), respectively. Two positioning pins (23) are embedded on the mounting seat (20), the two positioning pins (23) are in one-to-one correspondence with the two positioning holes (112), and the positioning pins (23) are used to position the positioning holes (112).

6. The guide structure for guiding a drill bit according to claim 4, characterized in that: The connecting portion (11) is provided with an anti-fouling hole (113), and the mounting seat (20) is embedded with an anti-fouling pin (24), and the anti-fouling hole (113) is used for inserting the anti-fouling pin (24).

7. The guide structure for guiding a drill bit according to claim 6, characterized in that: The diameter of the fool-proof hole (113) is 1 to 2 mm larger than the diameter of the fool-proof pin (24).

8. The guide structure for guiding a drill bit according to claim 1, characterized in that: A groove (114) is provided on the surface of the guide member (10) close to the mounting seat (20).

9. The guide structure for guiding a drill bit according to claim 1, characterized in that: The upper end of the slide groove (121) is provided with a chamfer (1211).

10. The guide structure for guiding a drill bit according to claim 1, characterized in that: A buffer pad (122) is installed on the surface of the guide member (10) close to the slider (30).

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