CN114061517A - Automatic PCB thickness measuring equipment and measuring method thereof - Google Patents
Automatic PCB thickness measuring equipment and measuring method thereof Download PDFInfo
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- CN114061517A CN114061517A CN202111384755.2A CN202111384755A CN114061517A CN 114061517 A CN114061517 A CN 114061517A CN 202111384755 A CN202111384755 A CN 202111384755A CN 114061517 A CN114061517 A CN 114061517A
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- 238000005259 measurement Methods 0.000 claims abstract description 48
- 239000000523 sample Substances 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 6
- 239000003086 colorant Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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Abstract
The invention discloses an automatic measuring device for the thickness of a PCB (printed circuit board), which comprises a machine table, wherein the machine table is provided with a circuit board placing area and a three-dimensional moving device capable of moving in the circuit board placing area, a measuring probe for detecting the thickness of the circuit board is arranged at the movable end of the three-dimensional moving device moving up and down relative to the circuit board placing area, a display screen and a keyboard are arranged on the machine table, and a control host machine respectively connected with the three-dimensional mobile device, the measuring probe, the display screen and the keyboard, the three-dimensional movement of the measuring probe is realized by controlling the movement of the X-axis and the Y-axis directions through the stepping motor and controlling the movement of the Z-axis direction through the air cylinder, the thickness of the circuit board is measured point by moving the measuring probe according to the parameters set by the keyboard through the control host, and the display screen displays the thickness of the circuit board, so that the automatic measurement of the thickness of the circuit board is realized, and the measurement accuracy is improved.
Description
[ technical field ]
The invention relates to the technical field of circuit board thickness measurement, in particular to automatic PCB thickness measurement equipment and a measurement method thereof.
[ background art ]
With the continuous development of scientific technology, the PCB industry is also in vigorous development, the popularization degree of automation technology in the PCB industry is higher and higher, but at the present stage, a plurality of PCB factories still use manual measurement to measure the thickness of the PCB, the manual measurement is easy to have errors or missing measurement, and meanwhile, the labor cost is high, so that a large amount of manpower resources are wasted, and the product quality is also badly influenced due to the low precision of the manual measurement.
[ summary of the invention ]
The invention overcomes the defects of the technology and provides the PCB thickness automatic measuring equipment and the PCB thickness automatic measuring method which can quickly and accurately measure the PCB.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an automatic measuring equipment of PCB circuit board thickness which characterized in that: the device comprises a machine table, wherein a circuit board placing area and a three-dimensional moving device capable of moving in the circuit board placing area are arranged on the machine table, a measuring probe used for detecting the thickness of a circuit board is arranged at a movable end of the three-dimensional moving device, which moves up and down relative to the circuit board placing area, a display screen and a keyboard are arranged on the machine table, and a control host machine is respectively connected with the three-dimensional moving device, the measuring probe, the display screen and the keyboard.
The automatic PCB circuit board thickness measuring equipment is characterized in that: the machine table is provided with a measuring cavity, the circuit board placing area and the three-dimensional moving device are respectively arranged in the measuring cavity, and one side of the measuring cavity is hinged with a transparent dust cover which covers and seals the measuring cavity.
The automatic PCB circuit board thickness measuring equipment is characterized in that: three-dimensional mobile device is including placing the Y axle guide rail that regional both sides vertical limit set up along the circuit board, be equipped with Y axle guide rail slider on the Y axle guide rail and drive the Y axle slider of both sides Y axle guide rail slider synchronous slip, be equipped with the X axle guide rail between the Y axle guide rail slider of both sides, be equipped with X axle guide rail slider on the X axle guide rail and drive the gliding X axle slider of X axle guide rail slider, be equipped with the Z axle cylinder that flexible end set up downwards and be connected with the main control system on the X axle guide rail slider, measuring probe sets up on the flexible movable end of Z axle cylinder.
The automatic PCB circuit board thickness measuring equipment is characterized in that: the Y-axis sliding device comprises drivers arranged on a Y-axis guide rail, the two drivers are connected through a transmission rod, the drivers drive a Y-axis guide rail sliding block to slide on the Y-axis guide rail through a transmission belt arranged on the Y-axis guide rail, and one of the drivers is connected with a rotating shaft of a Y-axis motor; the X-axis sliding device comprises an X-axis motor arranged at one end of an X-axis guide rail, and a rotating shaft of the X-axis motor is connected with a transmission belt which is arranged in the X-axis guide rail and drives an X-axis guide rail sliding block to slide on the X-axis guide rail.
The measuring method of the automatic PCB thickness measuring equipment comprises the following steps:
a. setting circuit board parameters and measurement parameters to a control host through a keyboard, and storing and controlling the circuit board parameters and the measurement parameters in the control host;
b. a rectangular coordinate system is arranged in the circuit board placement area, a reset instruction is input to the control host through a keyboard, and the control host respectively controls the X-axis motor, the Y-axis motor and the Z-axis cylinder to work so that the measuring probe is reset and moves to a position above the origin of the rectangular coordinate system for standby;
c. placing the circuit board in a rectangular coordinate system and placing one corner of the circuit board on an original point;
d. inputting a thickness measurement instruction to a control host through a keyboard, moving a measurement probe to measure the thickness of the circuit board point by point according to the set circuit board parameters and the measurement parameters by the control host, and displaying the thickness in a display screen (3);
e. after the measurement is finished, the measuring probe is reset and moved to the position above the original point for standby, the control host saves the thickness data of the measuring point into an Excel data packet for storage, and the thickness data of the measuring point is exported to a Word file or an Excel file to be displayed on a display screen.
The measuring method of the automatic PCB thickness measuring equipment is characterized in that: the circuit board parameters are the length and width size, the standard thickness value, the minimum thickness value and the maximum thickness value of the circuit board; the measurement parameter is the number of measurement points.
The measuring method of the automatic PCB thickness measuring equipment is characterized in that:
step a also includes that the control host divides the circuit board into a plurality of measuring areas according to the set length and width dimensions of the circuit board and the number of measuring points, and one measuring point corresponds to one measuring area and is displayed in the display screen;
and step d, comparing the measured value of the circuit board measuring point with the standard thickness value, the minimum thickness value and the maximum thickness value of the circuit board, and displaying different colors on corresponding measuring areas in the display screen according to the comparison result.
The measuring method of the automatic PCB thickness measuring equipment is characterized in that: in the step d, when the measured value is within the range of 10% -90% of the standard thickness value, displaying the measured value as a gray frame on the corresponding measured area in the display screen;
when the measured value is within 10% of the standard thickness value, displaying the measured value as a white background blue edge on a corresponding measured area in the display screen;
when the measured value is within 90-100% of the standard thickness value, displaying the measured value as a white bottom red edge on a corresponding measuring area in the display screen;
when the measured value is within 90-100% of the standard thickness value, displaying the measured value as a white bottom red edge on a corresponding measuring area in the display screen;
when the measured value is smaller than the set minimum thickness value, displaying the measured value as red in the corresponding measured area in the display screen;
when the measured value is larger than the set maximum thickness value, the corresponding measured area in the display screen is displayed as blue.
The measuring method of the automatic PCB thickness measuring equipment is characterized in that: in the step a, circuit board parameters and measurement parameters stored in a control host are directly selected through a keyboard;
in the step a, the operation parameters of the X-axis motor, the Y-axis motor and the Z-axis cylinder which are reset and actuated to the original point can be set through a keyboard.
The measuring method of the automatic PCB thickness measuring equipment is characterized in that: the circuit board placing area is provided with a cross axis scale and a longitudinal axis scale corresponding to the positions of the cross axis and the longitudinal axis of the rectangular coordinate system respectively.
The invention has the beneficial effects that:
1. in the measuring equipment, the X-axis and Y-axis movement is controlled by the stepping motor, the Z-axis movement is controlled by the air cylinder, so that the three-dimensional movement of the measuring probe is realized, the control host moves the measuring probe to measure the thickness of the circuit board point by point according to the parameters set by the keyboard, and the thickness is displayed by the display screen, so that the automatic measurement of the thickness of the circuit board is realized, and the measurement accuracy is improved.
2. The invention stores and analyzes the thickness measurement data of the circuit board through the control host, more accurately evaluates the quality of the circuit board and is convenient for analyzing the data to improve the post processing of the circuit board.
[ description of the drawings ]
FIG. 1 is a structural diagram of an automatic circuit board thickness measuring apparatus according to the present invention;
FIG. 2 is a structural diagram of a measuring component of the automatic circuit board thickness measuring device of the present invention.
[ detailed description of the invention ]
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. In addition, the descriptions related to "preferred", "less preferred", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "preferred" or "less preferred" may explicitly or implicitly include at least one such feature.
As shown in fig. 1-2, an automatic PCB thickness measuring apparatus includes a machine table 1, a circuit board placement area and a three-dimensional moving device capable of moving in the circuit board placement area are disposed on the machine table 1, a measuring probe 2 for detecting the thickness of the circuit board is disposed on a movable end of the three-dimensional moving device moving up and down relative to the circuit board placement area, a display screen 3 and a keyboard 4 are disposed on the machine table 1, and a control host is connected to the three-dimensional moving device, the measuring probe 2, the display screen 3 and the keyboard 4. The measuring probe 2 is provided with a pressure sensor for protecting the circuit board from being damaged when the circuit board is pressed for measurement. When in measurement, the circuit board is placed in a circuit board placing area, circuit board parameters and measurement data are input into the control host through the keyboard 4, and the host controls the three-dimensional mobile device to move the measurement probe 2 to measure the thickness of the circuit board point by point according to the input data and displays the thickness on the display screen 3.
As shown in fig. 1, a measuring cavity is arranged on a machine table 1, a circuit board placing area and a three-dimensional moving device are respectively arranged in the measuring cavity, and a transparent dust cover covering and closing the measuring cavity is hinged to one side of the measuring cavity to prevent dust from entering and influencing the operation and measurement accuracy of the three-dimensional moving device and a measuring probe; the machine table 1 is connected with a rotating rod, the other end of the rotating rod is connected with an installation seat, and the display screen 3 and the keyboard 4 are respectively arranged on the installation seat.
As shown in fig. 1-2, a rectangular coordinate system is arranged on the circuit board placement region, a cross axis scale and a longitudinal axis scale are respectively arranged on the circuit board placement region corresponding to the cross axis and the longitudinal axis of the rectangular coordinate system, the circuit board is positioned and placed on the original point where the cross axis scale and the longitudinal axis scale intersect, and the length and the width of the placed circuit board can be rapidly measured through the scales; as shown in figure 2, the position close to the origin in the measuring cavity is provided with a device for limiting the movement reset of the measuring probe 2 and preventing the measuring probe from being damaged by collision.
As shown in fig. 2, the three-dimensional moving device includes Y-axis guide rails 61 disposed along longitudinal sides of two sides of a circuit board placement area, Y-axis guide rails 62 and Y-axis sliding devices for driving the Y-axis guide rails 62 to slide synchronously are disposed on the Y-axis guide rails 61, X-axis guide rails 71 are disposed between the Y-axis guide rails 62 on two sides, X-axis guide rails 71 are disposed with X-axis guide rails 72 and X-axis sliding devices for driving the X-axis guide rails 72 to slide, Z-axis cylinders 5 having telescopic ends disposed downward and connected with a control host are disposed on the X-axis guide rails 72, and the measuring probes 2 are disposed on telescopic movable ends of the Z-axis cylinders 5.
As shown in fig. 2, the Y-axis sliding device includes two drivers 63 disposed on a Y-axis guide rail 61, the two drivers 63 are connected through a transmission rod 64, the drivers 63 drive a Y-axis guide rail slider 62 to slide on the Y-axis guide rail 61 through a transmission belt disposed on the Y-axis guide rail 61, one of the drivers 63 is connected with a Y-axis motor 65 through a rotating shaft; the X-axis sliding device comprises an X-axis motor 73 arranged at one end of the X-axis guide rail 71, and a transmission belt arranged in the X-axis guide rail 71 and used for driving the X-axis guide rail sliding block 72 to slide on the X-axis guide rail 71 is connected to the rotating shaft of the X-axis motor 73. Wherein a coupler 66 for driving the two side drivers to drive the Y-axis guide rail slide block 62 to synchronously move through a belt is arranged between the driver 63 and the transmission rod 63.
The measuring method of the PCB circuit board thickness automatic measuring equipment comprises the following steps:
a. before measurement, SCHMID Panel audio software loaded by a control host is opened, circuit board parameters and measurement parameters are set for the control host through a keyboard 4 and are stored in the control host, wherein the circuit board parameters are the length and width size, the standard thickness value, the minimum thickness value and the maximum thickness value of a circuit board, and the measurement parameters are the number of measurement points;
the control host divides the circuit board into a plurality of measuring areas according to the set length and width dimensions of the circuit board and the number of the measuring points, one measuring point corresponds to one measuring area and is displayed in the display screen 3;
b. a rectangular coordinate system is arranged in the circuit board placement area, a Move home button of the control interface is clicked through the keyboard 4, a reset instruction is input to the control host, and the control host respectively controls the X-axis motor 73, the Y-axis motor 65 and the Z-axis cylinder 5 to work so that the measuring probe 2 is reset and moves to be above the origin of the rectangular coordinate system for standby;
c. opening the transparent dust cover, placing the circuit board in a rectangular coordinate system and placing one corner of the circuit board on an original point;
d. after the transparent dust cover is covered, a Start automatic button of the control interface is clicked through the keyboard 4, a thickness measurement instruction is input into the control host, the control host moves the measuring probe 2 to measure the thickness of the circuit board point by point according to the set circuit board parameters and the measurement parameters, and the thickness is displayed in the display screen 3;
meanwhile, the control host compares the measured value of the circuit board measuring point with the standard thickness value, the minimum thickness value and the maximum thickness value of the circuit board, and displays different colors on corresponding measuring areas in the display screen 3 according to the comparison result, so that the thickness of each measuring area of the circuit board can be conveniently and visually checked;
e. after the measurement is finished, the measuring probe 2 is reset and moved to the position above the original point for standby, the control host saves the thickness data of the measuring point into an Excel data packet for storage, the loss of the measuring data is prevented, the thickness data of the measuring point is exported to a Word file or an Excel file to be displayed on the display screen 3, and the comprehensive analysis of the surface of the circuit board is facilitated.
In step d of the scheme, when the measurement is interrupted due to various reasons during the measurement, the automatic measurement is activated, a window pops up on the control interface of the display screen 3, and three choices are displayed in the window: 1, restarting: starting measurement; 2, continuing: continuing to take the already started measurements; and 3, canceling: no function is activated. The user can select and process according to actual requirements.
In the step d, when the measured value is within the range of 10% -90% of the standard thickness value, displaying the measured value as a gray frame on the corresponding measurement area in the display screen 3; when the measured value is within 10% of the standard thickness value, displaying the measured value as a white background blue edge on the corresponding measured area in the display screen 3; when the measured value is within 90-100% of the standard thickness value, displaying the measured value as a white bottom red edge on the corresponding measured area in the display screen 3; when the measured value is within 90-100% of the standard thickness value, displaying the measured value as a white bottom red edge on the corresponding measured area in the display screen 3; when the measured value is smaller than the set minimum thickness value, the red color is displayed on the corresponding measuring area in the display screen 3; when the measured value is greater than the set maximum thickness value, it is displayed as blue on the corresponding measured area in the display screen 3.
In the step a of the scheme, the circuit board parameters and the measurement parameters stored in the control host are directly selected through the keyboard 4, a user can directly load data which are input and stored in the past, and an 'old' circuit board and data thereof are directly loaded from an SQL database of the control host.
In the step a of the scheme, the operation parameters of the X-axis motor 73, the Y-axis motor 65 and the Z-axis cylinder 5 which are reset and actuated to the original point can be respectively set through the keyboard 4, and the standby position of the original point of the measuring probe 2 is adjusted, so that the accuracy of moving to a measuring point is improved.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which can be directly or indirectly applied to other related technical fields without departing from the spirit of the present invention, are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides an automatic measuring equipment of PCB circuit board thickness which characterized in that: including board (1), be equipped with the circuit board on board (1) and place the region and can place the three-dimensional mobile device that the region removed at the circuit board, three-dimensional mobile device is equipped with measuring probe (2) that are used for detecting circuit board thickness for the regional movable end that reciprocates of circuit board placement, is equipped with display screen (3) and keyboard (4) on board (1) to and the main control system who is connected with three-dimensional mobile device, measuring probe (2), display screen (3), keyboard (4) respectively.
2. The automatic PCB circuit board thickness measuring device of claim 1, wherein: the machine table (1) is provided with a measuring cavity, the circuit board placing area and the three-dimensional moving device are respectively arranged in the measuring cavity, and one side of the measuring cavity is hinged with a transparent dust cover which covers and seals the measuring cavity.
3. The automatic PCB circuit board thickness measuring device of claim 1, wherein: three-dimensional mobile device is including Y axle guide rail (61) along the regional both sides longitudinal edge setting of circuit board placement, be equipped with Y axle guide rail slider (62) on Y axle guide rail (61) and drive the Y axle slider of both sides Y axle guide rail slider (62) synchronous slip, be equipped with X axle guide rail (71) between both sides Y axle guide rail slider (62), be equipped with X axle guide rail slider (72) on X axle guide rail (71) and drive the gliding X axle slider of X axle guide rail slider (72), be equipped with Z axle motor cylinder (5) that flexible end set up downwards and be connected with the main control system on X axle guide rail slider (72), measuring probe (2) set up on the flexible movable end of Z axle cylinder (5).
4. The automatic PCB circuit board thickness measuring device of claim 3, wherein: the Y-axis sliding device comprises drivers (63) arranged on a Y-axis guide rail (61), the two drivers (63) are connected through a transmission rod (64), the drivers (63) drive a Y-axis guide rail sliding block (62) to slide on the Y-axis guide rail (61) through a transmission belt arranged on the Y-axis guide rail (61), and one driver (63) is connected with a Y-axis motor (65) through a rotating shaft; the X-axis sliding device comprises an X-axis motor (73) arranged at one end of an X-axis guide rail (71), and a rotating shaft of the X-axis motor (73) is connected with a transmission belt which is arranged in the X-axis guide rail (71) and drives an X-axis guide rail sliding block (72) to slide on the X-axis guide rail (71).
5. A measuring method using the PCB circuit board thickness automatic measuring device of claim 4, comprising the following steps:
a. circuit board parameters and measurement parameters are set for the control host through a keyboard (4) and are stored and controlled in the host;
b. a rectangular coordinate system is arranged in the circuit board placement area, a reset instruction is input to the control host through the keyboard (4), and the control host respectively controls the X-axis motor (73), the Y-axis motor (65) and the Z-axis cylinder (5) to work so that the measuring probe (2) is reset and moves to a position above the origin of the rectangular coordinate system to be in standby;
c. placing the circuit board in a rectangular coordinate system and placing one corner of the circuit board on an original point;
d. inputting a thickness measurement instruction to a control host machine through a keyboard (4), and moving a measurement probe (2) by the control host machine to measure the thickness of the circuit board point by point according to the set circuit board parameters and the measurement parameters, and displaying the thickness in a display screen (3);
e. after the measurement is finished, the measuring probe (2) is reset and moved to the position above the original point for standby, the control host saves the thickness data of the measuring point into an Excel data packet for storage, and the thickness data of the measuring point is exported to a Word file or an Excel file to be displayed on the display screen (3).
6. The measuring method of the PCB circuit board thickness automatic measuring equipment according to claim 5, wherein the measuring method comprises the following steps: the circuit board parameters are the length and width size, the standard thickness value, the minimum thickness value and the maximum thickness value of the circuit board; the measurement parameter is the number of measurement points.
7. The measuring method of the automatic measuring equipment for the thickness of the PCB circuit board according to claim 6, wherein the measuring method comprises the following steps:
step a also comprises that the control host divides the circuit board into a plurality of measuring areas according to the set length and width dimensions of the circuit board and the number of measuring points, one measuring point corresponds to one measuring area and is displayed in the display screen (3);
and the step d also comprises the steps of comparing the measured value of the circuit board measuring point with the standard thickness value, the minimum thickness value and the maximum thickness value of the circuit board, and displaying different colors on corresponding measuring areas in the display screen (3) according to the comparison result.
8. The measuring method of the automatic measuring equipment for the thickness of the PCB circuit board according to claim 7, wherein the measuring method comprises the following steps: in the step d, when the measured value is within the range of 10% -90% of the standard thickness value, displaying the measured value as a gray frame on the corresponding measurement area in the display screen (3);
when the measured value is within 10% of the standard thickness value, displaying the measured value as a white background blue edge on a corresponding measured area in the display screen (3);
when the measured value is within 90-100% of the standard thickness value, displaying the measured value as a white bottom red edge on a corresponding measuring area in the display screen (3);
when the measured value is within 90-100% of the standard thickness value, displaying the measured value as a white bottom red edge on a corresponding measuring area in the display screen (3);
when the measured value is smaller than the set minimum thickness value, displaying the measured value as red in a corresponding measuring area in the display screen (3);
when the measured value is larger than the set maximum thickness value, the corresponding measured area in the display screen (3) is displayed as blue.
9. The measuring method of the PCB circuit board thickness automatic measuring equipment according to claim 5, wherein the measuring method comprises the following steps: in the step a, circuit board parameters and measurement parameters stored in a control host are directly selected through a keyboard (4);
in the step a, the operation parameters of resetting and actuating to the original point of the X-axis motor (73), the Y-axis motor (65) and the Z-axis cylinder (5) can be set through the keyboard (4) respectively.
10. The measuring method of the PCB circuit board thickness automatic measuring equipment according to claim 5, wherein the measuring method comprises the following steps: the circuit board placing area is provided with a cross axis scale and a longitudinal axis scale corresponding to the positions of the cross axis and the longitudinal axis of the rectangular coordinate system respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111384755.2A CN114061517A (en) | 2021-11-22 | 2021-11-22 | Automatic PCB thickness measuring equipment and measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111384755.2A CN114061517A (en) | 2021-11-22 | 2021-11-22 | Automatic PCB thickness measuring equipment and measuring method thereof |
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| CN114061517A true CN114061517A (en) | 2022-02-18 |
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| CN202111384755.2A Pending CN114061517A (en) | 2021-11-22 | 2021-11-22 | Automatic PCB thickness measuring equipment and measuring method thereof |
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