TWM642014U - Printed circuit board automatic line width measurement equipment - Google Patents

Abstract

The invention discloses a printed circuit board automatic line width measurement equipment, which includes: a frame, the frame has a base, and a mounting frame, the top surface of the base has a reference plane; A measurement module, the measurement module includes a camera device and a light source device; a mobile module, arranged between the measurement module and the frame, used to control the relative displacement of the measurement module and the base; and a The control module is coupled to the mobile module and the measurement module, and the control module is configured to drive the relative displacement between the measurement module and the base through the mobile module, so that the measurement module can pick up the printed circuit board Images of multiple measurement positions on the PCB, and through the images captured by the measurement module, measure the line width and line spacing of the printed circuit board at multiple measurement positions.

Description

Printed circuit board automatic line width measurement equipment

The invention relates to an automatic line width measurement device for a printed circuit board, in particular to an automatic line width measurement device for a printed circuit board used to manufacture multilayer printed circuit boards.

The multi-layer printed circuit board is composed of multiple layers of substrates. Each layer of the substrate is provided with lines etched by copper foil. As the density of printed circuit board lines increases day by day, the size of printed circuit board lines is miniaturized. , so the circuit inspection of the printed circuit board needs to rely on optical equipment (such as: microscope) to measure the circuit.

However, the existing printed circuit board line width measurement equipment usually must be operated manually, and the microscope or camera lens must be manually operated to measure the line width, line distance or circuit pattern of the printed circuit board to various measurement positions. The shape of the outline, so it is quite labor-intensive and easy to miss.

Due to the above factors, the existing automatic line width measurement technology for printed circuit boards has defects. Therefore, how to overcome the above-mentioned defects through technical improvement has become one of the important issues to be solved by this project.

The technical problem to be solved in this creation is to provide an automatic line width measurement device for printed circuit boards in view of the deficiency of existing printed circuit board line width measurement technology.

In order to solve the above-mentioned technical problems, one of the technical solutions adopted in this creation is A printed circuit board automatic line width measurement device is provided, which includes: a frame, the frame has a base, and a mounting frame arranged on the base; the top surface of the base has a A reference plane, used to place a printed circuit board to be measured; a measurement module, the measurement module is arranged on the mounting frame, the measurement module includes a camera, the camera It has a lens for capturing an image of one of the printed circuit boards placed on the reference plane; and a light source device for illuminating light on one of the printed circuit boards placed on the reference plane. The surface of the printed circuit board; a mobile module, the mobile module is arranged between the measurement module and the frame, used to control the relative displacement of the measurement module and the base; and A control module, the control module is coupled to the mobile module and the measurement module, and the control module is configured to control the measurement module and the measurement module through the mobile module The base is relatively displaced, so that the measurement module can capture images of multiple measurement positions on the printed circuit board, and measure the printed circuit through the images captured by the measurement module The line width of the plate at a plurality of said measurement positions.

One of the beneficial effects of this invention is that the printed circuit board automatic line width measurement equipment provided by this invention can control the mobile module to drive the measurement module and the base through the control module Relative displacement, so that the mobile module can be displaced relative to the printed circuit board placed on the base to a plurality of the measurement positions, and through the measurement module to capture the The image of the printed circuit board at the position is measured, and the measurement operation of the line width and line distance of the circuit of the printed circuit board is automatically completed, thereby achieving a high degree of automation and saving manpower.

In order to further understand the characteristics and technical content of this creation, please refer to the following detailed description and drawings about this creation. However, the provided drawings are only for reference and explanation, and are not used to limit this creation.

1: Printed circuit board automatic line width measurement equipment

100: Rack

110: Base

111: datum plane

112: suction hole

120: Mounting frame

130: Positioning fixture

200: Measurement module

210: camera device

211: Lens

220: light source device

221: The first light emitting unit

222: The second light emitting unit

300: Mobile Module

310: the first slide rail

320: the second slide rail

330: sliding seat

400:Move board module

410: Load device

411: The first mobile mechanism

412: The first plate removal bracket

413: The first suction nozzle

420: Uninstall device

421: Second mobile mechanism

422: The second plate taking bracket

423:Second suction nozzle

500: Control module

600: printed circuit board

610: Substrate

620: line

621: up

622: next frame

C: optical axis

FIG. 1 is a three-dimensional schematic diagram of an automatic line width measurement device for printed circuit boards of the present invention.

Figure 2 is a schematic cross-sectional view of the measurement module used in this creation.

FIG. 3 is a schematic diagram of measuring printed circuit board circuits by the measurement module of the invention.

The following is a description of the implementation of the "Automatic Line Width Measuring Equipment for Printed Circuit Boards" disclosed in this creation through specific specific examples. Those skilled in the art can understand the advantages and effects of this creation from the content disclosed in this specification. This creation can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without departing from the idea of this creation. In addition, the drawings of this creation are only for simple illustration, not according to the actual size of the depiction, prior statement. The following embodiments will further describe the relevant technical content of this creation in detail, but the disclosed content is not intended to limit the protection scope of this creation. In addition, the term "or" used herein may include any one or a combination of more of the associated listed items depending on the actual situation.

Referring to Figures 1 to 3, the present invention provides an automatic line width measurement device 1 for printed circuit boards, which mainly includes: a frame 100, a measurement module 200, a mobile module 300, and a control module Group 500, and a module 400 for moving boards.

Wherein, the frame 100 has a base 110 and an installation frame 120 disposed above the base 110 . In this embodiment, the base 110 is a large-area flat plate, and the top surface of the base 110 has a reference plane 111 for placing a printed circuit board 600 to be measured. The base 110 is provided with a plurality of suction holes 112, which are connected to a suction device not shown in the figure, so that the plurality of suction holes 112 can generate vacuum suction for The printed circuit board 600 is positioned on the reference plane 111 of the base 110 .

In addition, in this embodiment, a positioning jig 130 is also provided on the reference plane 111 of the base 110 for positioning the position of the printed circuit board 600 placed on the base 110 . place. The positioning jig 130 is L-shaped, and is arranged on the edge of a placement position of the printed circuit board 600 , so that when the printed circuit board 600 is placed on the reference plane 111 of the base 110 , The printed circuit board 600 can be positioned at the board placement position by abutting the edge of the printed circuit board 600 against the positioning jig 130 .

The measurement module 200 is disposed on the mounting frame 120 of the base 110, and the measurement module 200 is used to measure the line width of the circuit on the printed circuit board 600 through an optical measurement method. or line spacing. In this embodiment, the measurement module 200 includes a single camera device 210 and a light source device 220 . The imaging device 210 has a lens 211 and an image sensor not shown in the figure, which is used to capture an image of the printed circuit board 600 placed on the reference plane 111, and can be identified through image recognition means Parameters such as line width and line spacing of the circuit 620 of the printed circuit board 600 are measured.

The light source device 220 is used for irradiating light on the surface of the printed circuit board 600 to provide illumination light for the camera device 210 . In this embodiment, the light source device 220 includes a plurality of first light emitting units 221 and a plurality of second light emitting units 222 . Wherein, a plurality of the first light-emitting units 221 are disposed close to the lens 211, and are arranged on a virtual circle centered on the optical axis C of the lens 211; a plurality of the second light-emitting units 222 are arranged At a position close to the reference plane 111 of the base 110, a plurality of the second light emitting units 222 are located on a virtual circle centered on the optical axis C of the lens 211, and a plurality of the second light emitting units 222 The diameter of the virtual circle where the light emitting units 222 are arranged is larger than the virtual circle where the plurality of first light emitting units 221 are arranged.

As shown in FIG. 3 , it is a schematic diagram of the measurement module 200 of this invention measuring the line width and line distance of a printed circuit board 600 . Wherein, the printed circuit board 600 has a substrate 610 and a circuit 620 disposed on the surface of the substrate 610 . In the light source device 220, since the positions of the plurality of second light emitting units 222 are lower than the heights of the plurality of first light emitting units 221, and viewed from the direction of the orthographic projection of the reference plane 111, the plurality of the second light emitting units The position of a light emitting unit 221 is close to the lens 211, and the positions of the plurality of second light emitting units 222 in the direction of the orthographic projection of the reference plane 111 Located outside the plurality of first light-emitting units 221, so that the light emitted by the plurality of first light-emitting units 221 can be irradiated on the surface of a substrate 610 of the printed circuit board 600 at an angle close to vertical, and set on the circuit 620 on the surface of the substrate 610 , and the light generated by the plurality of second light emitting units 222 is irradiated on the surface of the substrate 610 and the circuit 620 in an oblique direction from outside to inside.

Through the above arrangement, the light rays directly irradiated on the surface of the printed circuit board 600 by the plurality of first light emitting units 221 of the light source device 220 can evenly illuminate the top surface of the substrate 610 and the circuit 620, while The oblique rays produced by the plurality of second light emitting units 222 can make the side of the outer periphery of the line 620 different from the illuminance of the line 620 , thus making the upper end of the outer periphery of the line 620 and the side of the line 620 The junction of the top surface, the bottom of the side of the outer periphery of the circuit 620 and the junction of the substrate 610 can produce a significant contrast with the image of the top surface of the circuit 620 and the substrate 610, thus making the measurement The module 200 can distinguish the outline of the upper panel 621 of the circuit 620 (i.e. the outline of the outer periphery of the top surface of the circuit 620), and the outline of the lower panel 622 of the circuit (i.e. the outline of the outer periphery of the circuit 620 at the bottom). edge contour).

The moving module 300 is disposed between the measuring module 200 and the base 110 of the frame 100 for controlling the relative displacement of the measuring module 200 and the base 110 . In this embodiment, the mobile module 300 includes: a plurality of first sliding rails 310 arranged between the base 110 and the frame 100 along a longitudinal axis direction parallel to the reference plane 111 , and a plurality of second slide rails 320 arranged on the mounting bracket 120 of the rack 100 along a horizontal axis direction parallel to the reference plane 111 and perpendicular to the longitudinal axis direction, and arranged on A slide seat 330 on the plurality of second slide rails 320 . The measurement module 200 is arranged on the sliding seat 330, so the measurement module 200 can be connected with the base through a plurality of the first slide rails 310 and a plurality of the second slide rails 320. The seat 110 is relatively displaced along the direction of the longitudinal axis and the direction of the transverse axis.

The control module 500 is coupled to the mobile module 300 and the measurement module 200, so The control module 500 is configured to control the moving module 300 to drive the relative displacement between the measurement module 200 and the base 110, so that the measurement module 200 can pick up the printed circuit board 600, and through the images captured by the measurement module 200, measure the line width and line width of the circuit 620 on the printed circuit board 600 at the multiple measurement positions. distance.

In this embodiment, the control module 500 is configured to be able to pre-set a movement path according to the operator's setting or internal program control, and the movement path is composed of a plurality of corresponding to the printed circuit board 600 The mobile node that measures the position, and the control module 500 can control the mobile module 300 to drive the relative displacement of the measurement module 200 and the base 110 according to the movement path, so that the quantity The measuring module 200 moves relative to the printed circuit board 600 to a plurality of measuring positions along the moving path to measure the printed circuit board 600 . Through the above method, the printed circuit board automatic line width measurement device 1 of the present invention can automatically complete a measurement operation of the printed circuit board 600 through the control of the control module 500 .

In order to achieve the purpose of automatically loading and unloading boards, this invention is also provided with the board moving module 400, which is used to move the printed circuit board 600 to be measured from a board entry area not shown in the figure to the base 110 , and move a measured printed circuit board 600 from the base 110 to a receiving area not shown in the figure. In this embodiment, the board moving module 400 includes a loading device 410 and an unloading device 420 .

Wherein, the loading device 410 is used to move a printed circuit board 600 to be measured from the board loading area to the board placement position on the base 110 . The loading device 410 includes a first moving mechanism 411, a first plate-removing support 412 connected to the first moving mechanism 411, and a plurality of first suction nozzles arranged on the first plate-removing support 412 413. The first moving mechanism 411 can drive the displacement of the first board-removing bracket 412, and suck a printed circuit from the board-in area through a plurality of first suction nozzles 413 on the first board-removing bracket 412. board 600 , and move one of the printed circuit boards 600 from the board feeding area to the board placement position on the base 110 .

The unloading device 420 includes a second moving mechanism 421, a second plate-taking support 422 connected to the second moving mechanism 421, and a plurality of second suction nozzles 423 arranged on the bottom surface of the second plate-taking support 422 . The unloading device 420 is used to move a measured printed circuit board 600 from the board placement position of the base 110 to a receiving area not shown in the figure. The structure and action principle of the second moving mechanism 421 , the second board-removing support 422 and the plurality of second suction nozzles 423 of the unloading device 420 are similar to the first moving mechanism of the loading device 410 411 , the first board-removing support 412 and the plurality of first suction nozzles 413 , so this description will not repeat them here.

When the printed circuit board automatic line width measurement equipment 1 is in operation, a printed circuit board 600 to be measured can be moved to the board placement position on the base 110 by the board moving module 400, and then Executing the measurement schedule through the control module 500, and controlling the moving module 300 to drive the relative displacement of the measurement module 200 and the base 110 to a plurality of measurement positions, through the The measurement module 200 captures images of the printed circuit board 600 at a plurality of measurement positions, and then uses the images captured by the measurement module 200 to measure the printed circuit board 600 through the control module 500 Measured values such as line width and line spacing of the circuit 620 of the circuit board 600 . After the measurement module 200 completes the measurement operation of the printed circuit board, the printed circuit board 600 that has been measured is moved to the receiving area through the unloading device 420 .

[Advantageous Effects of Embodiment]

One of the beneficial effects of this invention is that the printed circuit board automatic line width measurement equipment 1 provided by this invention can set the mobile module 300 between the measurement module 200 and the base 110, And through the control module 500 to control the mobile module 300 to drive the relative displacement of the measurement module 200 and the base 110, so that the mobile module 300 can be placed on the base 110 The printed circuit board 600 is relatively displaced to a plurality of the measurement positions, and the images of the printed circuit board 600 in the plurality of measurement positions are captured by the measurement module 200, and the automatic completion of the The measurement operation of the line width and line distance of the line 620 of the printed circuit board 600, thus achieving a highly automatic Automated and save manpower.

Furthermore, the printed circuit board automatic line width measurement equipment 1 provided by this invention can set a plurality of the first light-emitting units 221 and a plurality of the second light-emitting units 221 in the measurement module 200. Light-emitting unit 222, a plurality of first light-emitting units 221 are arranged at a higher position, and a virtual circle centered on the optical axis C of the lens 211, and a plurality of second light-emitting units 222 are arranged at a lower position , and another virtual circle with the optical axis C of the lens 211 as the center, and the diameter of the virtual circle in which the multiple second light emitting units 222 are arranged is larger than the virtual circle in which the multiple first light emitting units 221 are arranged, Therefore, the light source device 220 can simultaneously provide direct light and low-angle oblique light to illuminate the surface of the printed circuit board 600 , thus enabling the measurement module 200 to further identify the lines 620 of the printed circuit board 600 The contours of the upper panel 621 and the lower panel 622 can be measured, and the width of the upper panel 621 and the width of the lower panel 622 of the line 620 can be measured.

Furthermore, the printed circuit board automatic line width measurement equipment 1 provided in this invention can pass the printed circuit board to be measured through the loading device 410 of the board moving module 400 600 is moved to the board placement position of the base 110, and a printed circuit board 600 that has been measured is moved to the board placement area through the unloading device 420, so that fully automated board removal can be achieved And put the board operation, and can improve the automation degree of the printed circuit board measurement operation.

The content disclosed above is only the preferred feasible embodiment of this creation, and does not limit the scope of patent application for this creation. Therefore, all equivalent technical changes made by using the instructions and drawings of this creation are included in the application of this creation. within the scope of the patent.

1: Printed circuit board automatic line width measurement equipment

100: Rack

110: base

111: datum plane

112: suction hole

120: Mounting frame

130: Positioning fixture

200: Measurement module

300: Mobile Module

310: the first slide rail

320: the second slide rail

330: sliding seat

400:Move board module

410: Load device

411: The first mobile mechanism

412: The first plate removal bracket

413: The first suction nozzle

420: Uninstall device

421: Second mobile mechanism

422: The second plate taking bracket

423:Second suction nozzle

500: Control module

600: printed circuit board

Claims (7)

An automatic line width measurement device for a printed circuit board, comprising: A frame, the frame has a base, and a mounting frame arranged on the base; the top surface of the base has a reference plane for placing a printed circuit board to be measured; A measurement module, the measurement module is arranged on the installation frame, the measurement module includes a camera device, the camera device has a lens, used to capture the image placed on the reference plane an image of said printed circuit board; and a light source device for illuminating light onto a surface of said printed circuit board placed on said reference plane; and A mobile module, the mobile module is arranged between the measurement module and the frame, and is used to control the relative displacement between the measurement module and the base; A control module, the control module is coupled to the mobile module and the measurement module, and the control module is configured to control the measurement module and the measurement module through the mobile module The base is relatively displaced, so that the measurement module can capture images of multiple measurement positions on the printed circuit board, and measure the printed circuit through the images captured by the measurement module The line width of the plate at a plurality of said measurement positions. The printed circuit board automatic line width measurement equipment according to claim 1, wherein the light source device includes a plurality of first light-emitting units arranged close to the lens, and a plurality of first light-emitting units arranged close to the base Two light-emitting units, a plurality of the first light-emitting units and a plurality of the second light-emitting units are respectively arranged on two virtual circles centered on the optical axis of the lens; a plurality of the second light-emitting units are arranged The diameter of the virtual circle is larger than the diameter of the virtual circle in which the plurality of first light emitting units are arranged. The printed circuit board automatic line width measurement equipment as described in request item 2, wherein it also includes a board moving module; The circuit board is moved from a board-in area to the reference plane of the base, and an unloading device is used to move a measured printed circuit board from the base to a board-out area. The printed circuit board automatic line width measurement equipment according to claim 3, wherein the control module is configured to control the movement module to drive the measurement module and the measurement module according to a preset movement path. The relative displacement of the base makes the measurement module move to a plurality of measurement positions of the printed circuit board for measurement. The printed circuit board automatic line width measurement equipment according to claim 4, wherein, the mobile module includes a plurality of first slide rails and a plurality of second slide rails, and the plurality of first slide rails are parallel to one A longitudinal axis direction, the longitudinal axis direction is parallel to the reference plane; multiple second slide rails are parallel to a transverse axis direction, the transverse axis direction is parallel to the reference plane and perpendicular to the longitudinal axis direction , so that the measurement module and the base can be displaced relative to each other along the longitudinal axis and the transverse axis. The printed circuit board automatic line width measurement equipment according to claim 5, wherein, the first slide rail is arranged between the base and the frame, so that the base can The axial direction moves back; the second slide rail is set on the mounting frame, the measurement module is set on a slide seat, and is connected to the second slide rail through the slide seat, so that The measurement module can move back and forth along the horizontal axis. The printed circuit board automatic line width measurement equipment as described in claim 6, wherein the base is provided with a plurality of suction holes, and the plurality of suction holes can be connected to a suction device to generate a vacuum The suction force is used to absorb the printed circuit board on the reference plane of the base.

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