阅读说明：本技术 一种印制电路v形分隔槽的测量装置及方法 (Measuring device and method for V-shaped separation groove of printed circuit ) 是由 王晶 张丽丽 李凯 李�真 夏晨露 李鹏 许淼 陈银凤 王旋 蔡鹏� 刘娟利 于 2020-12-31 设计创作，主要内容包括：本发明属于电子信息技术领域,具体提供了一种印制电路V形分隔槽的测量装置及方法,包括探测头、刀片、移动杆、直线位移传感器和支架,支架右连接直线位移传感器,直线位移传感器、移动杆、探测头和刀片自上向下依次连接,解决了现有技术中不能高效、精确、直观的测量V形分隔槽深度的问题,可以快速地、精确地、直观地测量出V形分隔槽的深度,本发明选用的直线位移传感器适用工业生产,具有高可靠性、高精度等特点。(The invention belongs to the technical field of electronic information, and particularly provides a measuring device and a measuring method for a V-shaped separation groove of a printed circuit, which comprises a detecting head, a blade, a moving rod, a linear displacement sensor and a bracket, wherein the bracket is connected with the linear displacement sensor at the right side, and the linear displacement sensor, the moving rod, the detecting head and the blade are sequentially connected from top to bottom.)

1. The utility model provides a measuring device of printed circuit V-arrangement separating groove which characterized in that: the device comprises a blade (2), a moving rod (3), a linear displacement sensor (4) and a support (5), wherein the linear displacement sensor (4) comprises a linear displacement processor (14) and a detecting head (1), the support (5) is connected with the linear displacement processor (14) at the right side, the linear displacement processor (14), the moving rod (3) and the blade (2) are sequentially connected from top to bottom, and the blade (2) is connected with the detecting head (1); the detecting head (1) is electrically connected with the linear displacement processor (14).

2. A printed circuit V-shaped partition tank measuring device according to claim 1, wherein: the blade (2) is made of tungsten steel.

3. A printed circuit V-shaped partition tank measuring device according to claim 1, wherein: the lower end of the blade is wedge-shaped.

4. A printed circuit V-shaped partition tank measuring device according to claim 1, wherein: the linear displacement processor (14) comprises a power supply management module (7), an isolation power supply module (8), a current input interface (9), a current-voltage conversion circuit (10), a digital-to-analog conversion chip (11), a digital isolation chip (12), a digital signal processor (13) and a display circuit (6), wherein the current input interface (9), the current-voltage conversion circuit (10), the digital-to-analog conversion chip (11), the digital isolation chip (12), the digital signal processor (13) and the display circuit (6) are sequentially electrically connected, the isolation power supply module (8), the current input interface (9), the digital-to-analog conversion chip (11), the digital isolation chip (12) and the digital signal processor (13) are respectively and electrically connected with the power supply management module (7), and the isolation power supply module (8) is respectively and electrically connected with the current input interface (9), the digital-to-analog conversion chip (11) and, A digital isolation chip (12) and a digital signal processor (13).

5. A printed circuit V-shaped separation tank measuring device according to claim 4, characterized in that: the current input interface (9) is an anti-reverse connection 4-20mA signal input interface.

6. A printed circuit V-shaped divided slot measuring device according to claim 5, wherein: the current input interface (9) is a two-wire system power distribution type interface, and the power distribution is direct current 24V and the maximum power is 30 mA.

7. A printed circuit V-shaped separation tank measuring device according to claim 4, characterized in that: the current-voltage conversion circuit (10) adopts a 1w power resistor with 24.9 ohms and a temperature drift coefficient of 5 ppm/DEG C as current sampling.

8. A printed circuit V-shaped divided slot measuring device according to claim 5, wherein: the current-voltage conversion circuit (10) adopts a switching diode as an anti-reverse connection protection device.

9. A printed circuit V-shaped separation tank measuring device according to claim 4, characterized in that: the display circuit (6) is a code breaking screen driving circuit which comprises an 8-bit digital code breaking screen driving interface and a 4-bit code breaking screen public interface.

10. A measuring method of a V-shaped separation groove of a printed circuit is characterized by comprising the following steps: the method comprises the following steps: the moving rod (3) controls the blade (2) to be inserted into the V-shaped separation groove, the detecting head (1) moves along with the blade (2), and the linear displacement sensor (4) measures the depth of the V-shaped separation groove through the displacement of the detecting head (1).

Technical Field

The invention belongs to the technical field of electronic information, and particularly relates to a measuring device and method for a V-shaped separation groove of a printed circuit.

Background

In the printed circuit board production industry, when the printed circuit board is produced, a V-Cut process, namely a V-shaped separation groove, is often required to be added when the edgings for the auxiliary electric devices are spliced in batches or added at the edge of the printed circuit board. The V-shaped separation groove is used for facilitating a user to easily separate the spliced circuit boards after the electric fitting is completed, and the depth of the V-shaped separation groove influences the separation difficulty or splicing quality of the printed circuit boards. The V-shaped separation groove is too deep, so that the connection failure of the spliced printed circuit board is caused, and the welding is influenced; the V-shaped separation groove is too shallow, which makes the printed circuit board difficult to separate after soldering is completed. Although the depth of the V-shaped separation groove can be measured in the prior art, the accuracy is not high, and how to accurately measure the depth of the V-shaped separation groove is a technical problem which needs to be solved urgently, so that a user can easily separate spliced circuit boards after completing electric fitting.

Disclosure of Invention

The invention provides a measuring device and a measuring method for a V-shaped separating groove of a printed circuit, and aims to solve the problem that the depth of the V-shaped separating groove cannot be efficiently, accurately and intuitively measured in the prior art.

Therefore, the invention provides a measuring device for a V-shaped separation groove of a printed circuit, which comprises a blade, a moving rod, a linear displacement sensor and a bracket, wherein the linear displacement sensor comprises a linear displacement processor and a detecting head; the probe is electrically connected with the linear displacement processor.

Furthermore, the blade is made of tungsten steel.

Further, the shape of the lower end of the blade is wedge-shaped.

Further, the linear displacement processor comprises a power management module, an isolation power module, a current input interface, a current-voltage conversion circuit, a digital-to-analog conversion chip, a digital isolation chip, a digital signal processor and a display circuit, wherein the current input interface, the current-voltage conversion circuit, the digital-to-analog conversion chip, the digital isolation chip, the digital signal processor and the display circuit are sequentially electrically connected, the isolation power module is respectively and electrically connected with the isolation power module, the current input interface, the digital-to-analog conversion chip, the digital isolation chip and the digital signal processor, and the isolation power module is respectively and electrically connected with the current input interface, the digital-to-analog conversion chip, the digital isolation chip and the digital signal processor.

Further, the current input interface is an anti-reverse connection 4-20mA signal input interface.

Furthermore, the current input interface is a two-wire system power distribution type interface, and the power distribution is direct current 24V and the maximum power is 30 mA.

Furthermore, the current-voltage conversion circuit adopts a 1w power resistor with 24.9 ohms and a temperature drift coefficient of 5 ppm/DEG C as a current sample.

Further, the current-voltage conversion circuit adopts a switching diode as an anti-reverse connection protection device.

Furthermore, the display circuit is a code breaking screen driving circuit which comprises an 8-bit digital code breaking screen driving interface and a 4-bit code breaking screen public interface.

A measuring method of a V-shaped separation groove of a printed circuit comprises the following steps: the moving rod controls the blade to be inserted into the V-shaped separation groove, the detecting head moves along with the blade, and the linear displacement sensor measures the depth of the V-shaped separation groove through the displacement of the moving detecting head.

The invention has the beneficial effects that: the measuring device and the measuring method for the V-shaped separation groove of the printed circuit comprise a detecting head, a blade, a moving rod, a linear displacement sensor and a bracket, wherein the moving rod controls the blade to be inserted into the V-shaped separation groove, the detecting head moves along with the blade, the linear displacement sensor measures the depth of the V-shaped separation groove through the moving displacement of the detecting head, the automation degree is high, and the depth of the V-shaped separation groove is efficiently, accurately and visually measured.

Drawings

The present invention will be described in further detail below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a measuring device for a V-shaped separation groove of a printed circuit;

FIG. 2 is a schematic view of the probe head with the blade attached;

fig. 3 is a schematic diagram of the structure of the linear displacement sensor.

Description of reference numerals: 1. a probe head; 2. a blade; 3. a travel bar; 4. a linear displacement sensor; 5. a support; 6. a display circuit; 7. a power management module; 8. an isolated power supply module; 9. a current input interface; 10. a current-voltage conversion circuit; 11. a digital-to-analog conversion chip; 12. a digital isolation chip; 13. a digital signal processor; 14. and a linear displacement processor.

Detailed Description

Example 1:

as shown in fig. 1 and 2, a measuring device for a V-shaped separation groove of a printed circuit comprises a blade 2, a moving rod 3, a linear displacement sensor 4 and a bracket 5, wherein the linear displacement sensor 4 comprises a linear displacement processor 14 and a detection head 1, the bracket 5 is connected with the linear displacement processor 14 at the right, the linear displacement processor 14, the moving rod 3 and the blade 2 are sequentially connected from top to bottom, and the blade 2 is connected with the detection head 1; the probe head 1 is electrically connected to a linear displacement processor 14.

In actual operation, the lower end of the bracket 5 is horizontal to the lower end of the blade 2, the lower end of the bracket 5 is tightly attached to the surface of the printed circuit board in measurement, the moving rod 3 controls the blade 2 to be inserted into the V-shaped separation groove, the detecting head 1 moves along with the blade 2, the linear displacement processor 14 analyzes and processes the moving displacement of the detecting head 1 to measure the depth of the V-shaped separation groove, the result is visually displayed, the automation degree is high, and the efficient, accurate and visual measurement of the depth of the V-shaped separation groove is realized; the measuring precision of the linear displacement sensor 4 is 1um, and the output signal is a current signal of 4-20 mA. The probing tip 1 is fixed on the blade to determine the position of the blade, and the probing tip 1 is of a conventional structure and is not specifically described herein.

Furthermore, the support 5 is a rigid metal support, and the rigid metal support is not easy to deform during measurement and use, has good stability and improves the measurement precision.

Example 2:

in addition to the embodiment 1, the blade 2 is made of tungsten steel. The tungsten steel material has a series of excellent performances of high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and the like, particularly high hardness and wear resistance, the tungsten steel material is basically kept unchanged even at the temperature of 500 ℃, the tungsten steel material still has very high hardness at the temperature of 1000 ℃, and the tungsten steel material blade avoids the problems that the blade is frequently inserted into the blade to cause wear, the measurement error is increased and the measurement precision is reduced during measurement.

Further, the shape of the lower end of the blade is wedge-shaped. The wedge-shaped structure is simple, the depth of the V-shaped separation groove is convenient to insert, the self weight of the blade 2 is reduced, and the wedge-shaped structure is attractive, simple in structure and high in applicability.

Further, the blade oblique angle is 10 degrees, and the wedge depth is 5 mm. In actual operation, the blade with the bevel angle of 10 degrees is easier to insert into the V-shaped separation groove; the wedge depth is 5mm, and the requirement of measuring the V-shaped separation groove of the printed circuit board with the depth of 5mm is met; the wedge depth can be adjusted according to actual conditions to satisfy the measurement of the printed circuit board V-arrangement separating tank of multiple degree of depth, alternative and suitability are strong.

Example 3:

on the basis of embodiment 2, as shown in fig. 3, the linear displacement processor 14 includes a power management module 7, an isolation power module 8, a current input interface 9, a current-voltage conversion circuit 10, a digital-to-analog conversion chip 11, a digital isolation chip 12, a digital signal processor 13, and a display circuit 6, where the current input interface 9, the current-voltage conversion circuit 10, the digital-to-analog conversion chip 11, the digital isolation chip 12, the digital signal processor 13, and the display circuit 6 are electrically connected in sequence, the power management module 7 is electrically connected to the isolation power module 8, the current input interface 9, the digital-to-analog conversion chip 11, the digital isolation chip 12, and the digital signal processor 13, and the isolation power module 8 is electrically connected to the current input interface 9, the digital-to-analog conversion chip 11, the digital isolation chip 12, and the digital signal processor 13.

The measuring method of the linear displacement sensor 4 comprises the following steps: the power management module 7 respectively supplies power to the isolation power module 8, the current input interface 9, the digital-to-analog conversion chip 11, the digital isolation chip 12 and the digital signal processor 13; the current input interface 9 receives a current signal and transmits the current signal to the current-voltage conversion circuit 10, and the current-voltage conversion circuit 10 collects the current signal and converts the collected current signal into a voltage signal; the digital-to-analog conversion chip 11 collects the voltage signal converted by the current-to-voltage conversion circuit 10 and converts the collected voltage signal into a digital signal, the digital-to-analog conversion chip 11 transmits the digital signal to the digital isolation chip 12 in an SPI signal communication mode for denoising, the digital signal denoised by the digital isolation chip 12 is output to the digital signal processor 13 in an SPI signal communication mode, and the digital signal processor 13 operates the denoised digital signal and converts the denoised digital signal into a measured depth value; the digital signal processor 13 transmits the measured depth value to the display circuit 6, and the display circuit 6 displays the depth value visually; the high-efficiency, accurate and visual measurement of the linear displacement sensor 4 is realized.

The digital-to-analog conversion chip 11 adopts a voltage acquisition circuit, the sampling precision is 24 bits, the measurement precision of the voltage less than 2uV is realized, and the signal acquisition higher than the output precision of the linear displacement sensor is realized.

The digital isolation chip 12 adopts a digital isolation circuit to isolate noise caused by the digital processing circuit and power frequency, and the circuit improves the precision of the measuring circuit.

The digital signal processor 13 adopts a low-power consumption digital processing circuit with an SPI interface and driving a liquid crystal display screen to realize the operation of the signals acquired by the digital-to-analog conversion chip and convert the signals into measured depth values.

The power management module 7 adopts a low-noise power management circuit to supply power to the isolation power module 8, the current input interface 9, the digital-to-analog conversion chip 11, the digital isolation chip 12 and the digital signal processor 13.

The isolation power supply module 8 respectively processes digital noises of the digital-to-analog conversion chip 11, the digital isolation chip 12 and the digital signal processor 13, and low-noise and high-precision measurement of the end 4 of the linear displacement sensor is realized.

The structures and the circuits of the power management module 7, the isolation power module 8, the current input interface 9, the current-voltage conversion circuit 10, the digital-to-analog conversion chip 11, the digital isolation chip 12, the digital signal processor 13 and the display circuit 6 are all the prior art, and will not be described in detail herein.

Example 4:

on the basis of the embodiment 3, the current input interface 9 is an anti-reverse connection 4-20mA signal input interface. The reverse connection prevention 4-20mA signal input interface is simple in structure and prevents the linear displacement sensor from being damaged during false connection.

Further, the current input interface 9 is a two-wire system live line power distribution type interface, and the power distribution is direct current 24V and the maximum power is 30 mA. The two-wire system electrified distribution type interface is adopted, so that a 24V distribution power supply is provided for the current-voltage conversion circuit 10, and meanwhile, after the input current signals are collected, amplified, operated and subjected to anti-interference processing, isolated current and voltage signals are output for the use of a subsequent secondary instrument or other instruments.

Example 5:

on the basis of embodiment 4, the current-voltage conversion circuit 10 adopts a 1w power resistor with 24.9 ohms and a temperature drift coefficient of 5 ppm/DEG C as a current sample. The current signal can be maximally sampled while the power consumption is reduced, and the sampling precision is improved.

Further, the current-voltage conversion circuit 10 uses a switching diode as an anti-reverse connection protection device. The switch diode is used as an anti-reverse connection protection device to prevent the sensor of the linear displacement sensor from being damaged due to misconnection in use.

Further, the switch diode is a low temperature drift RB751S40 switch diode; the resistance value of the switch diode with the low temperature drift RB751S40 is small along with the temperature change, and the measurement precision is high.

Example 6:

on the basis of the embodiment 5, further, the display circuit 6 is a code breaking screen driving circuit, and the code breaking screen driving circuit includes an 8-bit digital code breaking screen driving interface and a 4-bit code breaking screen common interface. The digital code breaking screen drive of 32 sections is realized, the numerical value display of 0-9999 is realized, the maximum display value is 9999um, and the minimum display value is 0 um.

Example 7:

a measuring method of a V-shaped separation groove of a printed circuit comprises the following steps: the moving rod 3 controls the blade 2 to be inserted into the V-shaped separation groove, the detecting head 1 moves along with the blade 2, and the linear displacement sensor 4 measures the depth of the V-shaped separation groove through the displacement amount of the moving detecting head 1.

The depth of the V-shaped separation groove can be rapidly, accurately and visually measured by using the method, and the linear displacement sensor selected by the method is suitable for industrial production and has the characteristics of high reliability, high precision and the like. The method can improve the efficiency of the production process, reduce the output of defective products of the printed circuit board and has obvious advantages in both technology and economic benefit compared with the same industry.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "right", and the like, if any, refer to an orientation or positional relationship based on that shown in the drawings, and do not refer to or imply that the referenced devices or elements must have a particular orientation, configuration, and operation in a particular orientation, and thus, the terms describing a positional relationship in the drawings are used for illustrative purposes only and are not to be construed as limiting the present patent.

The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.