Circuit board back drilling depth measuring device

Abstract

The utility model relates to the technical field of circuit board processing, in particular to a circuit board back drill depth measuring device, which comprises a handheld seat, the whole handheld seat is in a straight plate shape, one end of the handheld seat is provided with a vertically upward fixing frame, the other end of the handheld seat is provided with a propping plate in a sliding manner, and the fixing frame is internally provided with a lifting plate capable of reciprocating up and down; and a telescopic plate is slidably mounted at the outer end of the lifting plate. The utility model has the advantages that one end of the handheld seat is slidably provided with the abutting plate, the vertically upward fixing frame is arranged above the other end of the handheld seat, the lifting plate capable of reciprocating up and down is arranged in the handheld seat, one end of the lifting plate is slidably provided with the telescopic plate, and the front end of the lifting plate is provided with the mounting holes in a circumferential array; probes are installed in the multiple installation holes in a sliding mode, the positions of the abutting plate and the telescopic plate are adjusted, the probes stretch out by a certain distance and stretch into the formed hole positions, and through vertical movement of the lifting plate, mechanical measurement can be conducted on the hole depth through the probes.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a circuit board back drill depth measuring device. Background Art

[0002] In the production and manufacturing process of a PCB board, through holes are required to achieve electrical connection between layers of circuits. The through holes are usually processed by a drilling machine, and then through processes such as copper deposition and electroplating, a conductive layer is formed in the through holes to achieve electrical connection between different layers. However, the ends of some electroplated through holes are not connected, which will cause signal reflection, resulting in signal reflection, scattering, delay and other phenomena, thus bringing signal distortion problems. To solve this problem, further processing of the through holes is required, that is, back drilling. The function of back drilling is to drill off the through hole segments that do not play any connection or transmission role, avoiding signal transmission reflection, scattering, delay, etc.

[0003] Back drilling has a great influence on signal transmission, that is, the back drill depth has a great influence on the signal. Therefore, it is crucial to accurately control the back drill depth. At present, the back drill depth is mainly achieved through the CBD depth control function of the drilling machine. However, affected by the depth control accuracy of the drilling machine (±4 mil) and the board thickness uniformity, it is difficult to control the depth of the back drilled holes. Therefore, the detection of the back drilled hole depth in the production process is very important. At present, the method for detecting the back drilled hole depth is mainly to observe the depth of the back drilled hole by using a metallographic microscope after manually taking slices, and then adjust the processing parameters of the drilling machine in a timely manner according to the slice data. However, the existing back drill depth confirmation method is inefficient, requires a large number of slices to be made, has a high processing cost, and will cause certain damage to the PCB board when making slices. Based on this, this application proposes a circuit board back drill depth measuring device to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a circuit board back drill depth measuring device.

[0005] The purpose of the utility model is achieved by the following technical solutions: A circuit board back drill depth measuring device includes a hand-held seat, which is integrally in a straight plate shape. One end of the hand-held seat is provided with a vertically upward fixed frame, and the other end is slidably installed with a pressing plate. The inside of the fixed frame is installed with a lifting plate that can reciprocate up and down. The outer end of the lifting plate is slidably installed with a telescopic plate. A plurality of mounting holes with different sizes and arranged in a circumferential array are opened on the outer side of the outer surface of the telescopic plate. Probes are slidably installed inside them, and there is a sliding damping between the two. Scale grooves are opened on the outer surfaces of the plurality of probes. A first mounting groove is opened above the fixed frame, and a second mounting groove is opened at the other end of the lifting plate away from the top surface of the telescopic plate. Laser ranging devices are installed inside the first mounting groove and the second mounting groove.

[0006] Optionally, a vertically upward grip is installed at one end of the hand-held seat away from the top surface of the abutting plate.

[0007] Optionally, a motor is installed on the top surface of the fixing frame, and a threaded rod is installed at its output end. One end of the lifting plate is installed in the fixing frame and is in threaded cooperation with the threaded rod.

[0008] Optionally, a first sliding groove is formed at one end of the outer part of the hand-held seat, and a first damping rod is installed on its inner wall. The abutting plate is located in the first sliding groove and is in sliding cooperation with the first damping rod, and there is a sliding damping between the two.

[0009] Optionally, a second sliding groove is formed at one end of the outer part of the lifting plate, and a second damping rod is installed on its inner wall. The telescopic plate is located in the second sliding groove and is in sliding cooperation with the second damping rod, and there is a sliding damping between the two.

[0010] The utility model has the following advantages:

[0011] For the back drill depth measuring device of the circuit board, the hand-held seat is used as the main body of the device, which is a straight plate type. An abutting plate is slidably installed at one end of the hand-held seat, and a vertically upward fixing frame is installed above the other end. An internally installed lifting plate that can reciprocate up and down is provided. One end of the lifting plate is slidably installed with a telescopic plate, and a plurality of mounting holes are formed in a circumferential array at its front end. Probes are slidably installed in the plurality of mounting holes. By adjusting the positions of the abutting plate and the telescopic plate, the probes are extended a certain distance and inserted into the opened hole positions. Through the up and down movement of the lifting plate, the mechanical measurement of the hole depth by the probes can be carried out.

[0012] Among them, the sizes of the plurality of probes are different, so that they can be inserted into different specifications of hole positions, improving the practicability of the device.

[0013] Among them, laser ranging devices are installed above the fixing frame and on one side of the top surface of the lifting plate, and the moving distance of the lifting plate can be measured by them to improve the ranging accuracy of the hole depth. Description of the Drawings

[0014] Figure 1 is the overall structural schematic diagram of the utility model;

[0015] Figure 2 is the Figure 1 internal structural schematic diagram of the utility model;

[0016] Figure 3 is the overall structural schematic diagram of the hand-held seat in the utility model;

[0017] Figure 4 is the overall structural schematic diagram of the lifting plate in the utility model.

[0018] In the figure: 1 - Hand - holding seat, 2 - Lifting plate, 3 - Supporting plate, 4 - Telescopic plate, 5 - Probe, 6 - Laser distance - measuring device, 7 - Motor, 8 - Threaded rod, 9 - Handle, 10 - Fixed frame, 11 - First installation groove, 12 - First sliding groove, 13 - First damping rod, 14 - Scale groove, 15 - Installation hole, 16 - Second sliding groove, 17 - Second damping rod, 18 - Second installation groove. Detailed implementation mode

[0019] The following further describes the present utility model in conjunction with the attached drawings, but the protection scope of the present utility model is not limited to the following.

[0020] As Figures 1 to 4 As shown, a back - drilling depth measuring device for a circuit board includes a hand - holding seat 1, which is integrally in a straight - plate shape. A vertically upward fixed frame 10 is installed at one end of the hand - holding seat 1, and a supporting plate 3 is slidably installed at the other end. An internally installed lifting plate 2 that can reciprocate up and down is installed inside the fixed frame 10. A telescopic plate 4 is slidably installed at the outer end of the lifting plate 2. A plurality of installation holes 15 with different sizes and arranged in a circumferential array are opened on the outer side of the outer surface of the telescopic plate 4. Probes 5 are slidably installed inside them, and there is a sliding damping between the two. Scale grooves 14 are opened on the outer surfaces of the plurality of probes 5. A first installation groove 11 is opened above the fixed frame 10, and a second installation groove 18 is opened at the other end of the lifting plate 2 away from the top surface of the telescopic plate 4. Laser distance - measuring devices 6 are installed inside both the first installation groove 11 and the second installation groove 18.

[0021] As an alternative technical solution of the present utility model, a vertically upward handle 9 is installed at one end of the hand - holding seat 1 away from the top surface of the supporting plate 3, which is convenient for the user to hold the hand - holding seat 1.

[0022] As an alternative technical solution of the present utility model, a motor 7 is installed on the top surface of the fixed frame 10, and a threaded rod 8 is installed at its output end. One end of the lifting plate 2 is installed inside the fixed frame 10 and is in threaded cooperation with the threaded rod 8. The size of the lifting plate 2 is adapted to the size inside the fixed frame 10 to play a role in limiting the lifting plate 2, so that it can only move up and down and will not shake.

[0023] As an alternative technical solution of the present utility model, a first sliding groove 12 is opened at one end outside the hand - holding seat 1, and a first damping rod 13 is installed on its inner wall. The supporting plate 3 is located inside the first sliding groove 12 and is in sliding cooperation with the first damping rod 13, and there is a sliding damping between the two. A second sliding groove 16 is opened at one end outside the lifting plate 2, and a second damping rod 17 is installed on its inner wall. The telescopic plate 4 is located inside the second sliding groove 16 and is in sliding cooperation with the second damping rod 17, and there is a sliding damping between the two. This is convenient for adjusting the positions of the supporting plate 3 and the telescopic plate 4, and the two will not accidentally slide.

[0024] In summary, the features, assembly methods, usage processes, and functions achieved by the various components in the present utility model are as follows: Taking the hand-held seat 1 as the main body of the device, which is a straight plate type. A pressing plate 3 is slidably installed at one end of the hand-held seat 1, and a vertically upward fixed frame 10 is installed above the other end. An elevating plate 2 that can reciprocate up and down is installed inside it. One end of the elevating plate 2 is slidably installed with a telescopic plate 4, and a plurality of mounting holes 15 arranged in a circular array are provided at its front end. Probes 5 are slidably installed inside the plurality of mounting holes 15. By adjusting the positions of the pressing plate 3 and the telescopic plate 4, the probes 5 are extended a certain distance and inserted into the opened hole positions. Through the up and down movement of the elevating plate 2, the mechanical measurement of the hole depth can be performed by the probes 5. The sizes of the plurality of probes 5 are different, enabling them to be inserted into hole positions of different specifications, improving the practicability of the device. Laser ranging devices 6 are installed above the fixed frame 10 and on one side of the top surface of the elevating plate 2, which can measure the moving distance of the elevating plate 2 to improve the ranging accuracy of the hole depth.

[0025] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A circuit board back drilling depth measuring device, characterized in that: The invention comprises a hand grip seat (1), which is in the shape of a straight plate as a whole. A fixing frame (10) is installed vertically upward at one end of the hand grip seat (1), and a stop plate (3) is slidably installed at the other end. A lifting plate (2) capable of reciprocating up and down is installed inside the fixing frame (10), and a telescopic plate (4) is slidably installed at the outer end of the lifting plate (2). The outer side of the outer surface of the telescopic plate (4) is provided with a plurality of mounting holes (15) of different sizes and arranged in a circumferential array, and probes (5) are slidably installed inside the telescopic plate (4), and there is sliding damping between the two. The outer surfaces of the plurality of probes (5) are provided with graduated grooves (14), a first mounting groove (11) is provided above the fixing frame (10), and a second mounting groove (18) is provided at the other end of the lifting plate (2) away from the top surface of the telescopic plate (4), and laser distance measuring devices (6) are installed inside the first mounting groove (11) and the second mounting groove (18).

2. The circuit board back drilling depth measuring device according to claim 1, characterized in that: A handle (9) pointing vertically upward is installed at one end of the hand grip seat (1) away from the top surface of the abutment plate (3).

3. The circuit board back drilling depth measuring device according to claim 1, characterized in that: A motor (7) is installed on the top surface of the fixing frame (10), and a threaded rod (8) is installed on the output end of the motor (7). One end of the lifting plate (2) is installed in the fixing frame (10) and is threadably matched with the threaded rod (8).

4. The circuit board back drilling depth measuring device according to claim 1, characterized in that: A first sliding groove (12) is provided at one end of the outside of the hand grip seat (1), and a first damping rod (13) is installed on the inner wall thereof; the abutment plate (3) is located in the first sliding groove (12) and is slidably matched with the first damping rod (13), and sliding damping is provided between the two.

5. The circuit board back drilling depth measuring device according to claim 1, characterized in that: A second sliding groove (16) is provided at one end of the outside of the lifting plate (2), and a second damping rod (17) is installed on the inner wall thereof. The telescopic plate (4) is located in the second sliding groove (16) and is slidably matched with the second damping rod (17), and there is sliding damping between the two.

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