CN216500800U - Detection apparatus for detect unetched copper layer in PCB board - Google Patents

Abstract

The utility model discloses a detection device for detecting an unetched copper layer in a PCB (printed circuit board). A positioning seat (4) is fixedly arranged on the extending end of a piston rod of a lifting cylinder (3), and a plurality of detection mechanisms (7) corresponding to through holes (20) in the PCB are arranged on a cross beam (6) of a portal frame (2); detection mechanism (7) are including high power electron magnification (8), set firmly in guide holder (9) of crossbeam (6) bottom and set up logical groove (10) on crossbeam (6), slidable mounting has guide post (11) in guide holder (9), crossbeam (6) setting is run through on the top of guide post (11), and the extension is served and has set firmly backup pad (12), the bottom of guide post (11) is run through guide holder (9) setting downwards, and the extension is served and has set firmly disc (13), mounting panel (14) have set firmly on the lateral wall that leads to groove (10). The beneficial effects of the utility model are: compact structure, alleviate workman working strength, improve and detect precision, easy operation.

Description

Detection apparatus for detect unetched copper layer in PCB board

Technical Field

The utility model relates to the technical field of detection of residual copper in a PCB (printed Circuit Board), in particular to a detection device for detecting an unetched copper layer in the PCB.

Background

With the continuous updating of electronic products, the PCBs installed in the electronic products are also continuously updated, wherein a certain PCB has a structure as shown in fig. 8 to 9, and includes a substrate (18) and a copper plate (19) formed on the substrate (18), a through hole (20) is required to be etched in the copper plate (19) in the process, and the through hole (20) is ensured to penetrate through the copper plate (19), wherein the through hole (20) is used for installing an electronic component. In the process of mounting electronic components, customers often find that the top surface of the electronic component is not flat after the electronic component is mounted in the through hole (20), mainly because: the copper plate (19) is not completely etched through, i.e., residual copper (21) remains at the bottom of the through hole (20), and thus the top surface of the mounted electronic component is not flat, and customer complaints are often encountered. Before the PCB leaves factory, the condition in the through hole needs to be observed manually by naked eyes to judge whether residual copper (21) exists at the bottom of the through hole, but the following technical defects exist in the manual detection: 1. the number of the PCB boards produced every day reaches hundreds, the number of the through holes (20) on each PCB board is large, and the working strength of workers is undoubtedly increased through manual detection. 2. The residual copper (21) on the edge of the through hole (20) is hidden and cannot be observed, and the technical defect of low detection precision exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide the detection device for detecting the unetched copper layer in the PCB, which has the advantages of compact structure, reduced working strength of workers, improved detection precision and simple operation.

The purpose of the utility model is realized by the following technical scheme: a detection device for detecting an unetched copper layer in a PCB comprises a workbench and a portal frame fixedly arranged on the surface of the workbench, wherein a lifting cylinder is fixedly arranged at the bottom of the workbench, a piston rod of the lifting cylinder penetrates through the workbench, a positioning seat is fixedly arranged at the extending end of the piston rod of the lifting cylinder, a sink is arranged on the top surface of the positioning seat, the outline of the sink is consistent with the outline of the PCB, and a plurality of detection mechanisms corresponding to through holes in the PCB are arranged on a cross beam of the portal frame; detection mechanism includes high power electron magnifying glass, set firmly in the guide holder of crossbeam bottom and set up the logical groove on the crossbeam, slidable mounting has the guide post in the guide holder, the crossbeam setting is run through on the top of guide post, and extend to serve and have set firmly the backup pad, the basal surface of backup pad supports on the crossbeam, the guide holder setting is run through downwards to the bottom of guide post, and extend to serve and have set firmly the disc, the mounting panel has set firmly on the lateral wall that leads to the groove, high power electron magnifying glass sets firmly on the terminal surface of mounting panel, the camera lens of high power electron magnifying glass is towards the contact zone of backup pad and crossbeam.

The beam is provided with a groove body, the groove body is communicated with an inner hole of the guide seat, and the guide column penetrates through the groove body.

The device also comprises a controller, wherein the output joint of the high-power electronic magnifier is connected with the input end of the controller through a signal wire, and the electromagnetic valve of the lifting cylinder is electrically connected with the controller.

The diameter of the disc is equal to that of the through hole in the PCB.

The disc, the guide post and the support plate are coaxially arranged.

And a plurality of guide rods are fixedly arranged on the bottom surface of the positioning seat and penetrate through the workbench in a sliding manner.

The utility model has the following advantages: compact structure, alleviate workman working strength, improve and detect precision, easy operation. This detection device is once only to a plurality of through-holes on the PCB board simultaneous detection, compares artifical with the visual detection, very big improvement detection efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion I of FIG. 1;

FIG. 3 is a schematic view of a tooling positioning PCB;

FIG. 4 is a schematic diagram of a PCB being inspected as a defective product;

FIG. 5 is an enlarged view of a portion II of FIG. 4;

FIG. 6 is a schematic diagram of a PCB being inspected as a good product;

FIG. 7 is an enlarged view of a portion III of FIG. 6;

FIG. 8 is a schematic structural diagram of a PCB board;

FIG. 9 is an enlarged partial view of the portion IV of FIG. 8;

in the figure, 1-workbench, 2-portal frame, 3-lifting cylinder, 4-positioning seat, 5-sink, 6-beam, 7-detection mechanism, 8-high power electronic magnifier, 9-guide seat, 10-through groove, 11-guide post, 12-support plate, 13-disc, 14-mounting plate, 16-groove body, 17-guide rod, 18-base plate, 19-copper plate, 20-through hole, 21-residual copper.

Detailed Description

The utility model will be further described with reference to the accompanying drawings, without limiting the scope of the utility model to the following:

as shown in fig. 1-2, a detection device for detecting an unetched copper layer in a PCB comprises a workbench 1 and a portal frame 2 fixedly arranged on a table top of the workbench 1, wherein a lifting cylinder 3 is fixedly arranged at the bottom of the workbench 1, a piston rod of the lifting cylinder 3 penetrates through the workbench 1, a positioning seat 4 is fixedly arranged on an extension end of the piston rod of the lifting cylinder 3, a sinking groove 5 is arranged on the top surface of the positioning seat 4, the outer contour of the sinking groove 5 is consistent with that of the PCB, and a plurality of detection mechanisms 7 corresponding to through holes 20 on the PCB are arranged on a cross beam 6 of the portal frame 2; detection mechanism 7 includes high power electron magnifying glass 8, set firmly guide holder 9 in crossbeam 6 bottom and set up logical groove 10 on crossbeam 6, slidable mounting has guide post 11 in guide holder 9, the top of guide post 11 runs through crossbeam 6 and sets up, and extend and serve and set firmly backup pad 12, the basal surface of backup pad 12 supports on crossbeam 6, guide post 11's bottom runs through guide holder 9 downwards and sets up, and extend and serve and set firmly disc 13, the diameter of disc 13 and the diameter of through-hole 20 on the PCB board equal, disc 13, guide post 11 and the coaxial setting of backup pad 12, mounting panel 14 has set firmly on the lateral wall that leads to groove 10, high power electron magnifying glass 8 sets firmly on the terminal surface of mounting panel 14, high power electron magnifying glass 8's camera lens is towards the contact zone of backup pad 12 and crossbeam 6.

A groove body 16 is formed in the cross beam 6, the groove body 16 is communicated with an inner hole of the guide seat 9, and the guide column 11 penetrates through the groove body 16. The device also comprises a controller, wherein the output joint of the high power electronic magnifier 8 is connected with the input end of the controller through a signal wire, and the electromagnetic valve of the lifting cylinder 3 is electrically connected with the controller. A plurality of guide rods 17 are fixedly arranged on the bottom surface of the positioning seat 4, and the guide rods 17 penetrate through the workbench 1 in a sliding manner.

The working process of the utility model is as follows:

s1, connecting the high-power electronic magnifier 8 of each detection mechanism 7 to a power supply, shooting the image of the contact seam between the cross beam 6 and the support plate 12 in the corresponding detection mechanism 7 by the high-power electronic magnifier 8 at the moment, magnifying the image, and transmitting the magnified image to the display screen of the controller by the high-power electronic magnifier 8;

s2, a worker faces the through hole 20 of the PCB upwards, and places the substrate 18 of the PCB into the sinking groove 5 of the positioning seat 4, so that the tooling positioning of the PCB is realized as shown in FIG. 3, at this time, each through hole 20 is respectively positioned under the disc 13 in each detection mechanism 7, and the axis of each through hole 20 is coaxial with the axis of the disc 13;

s3, controlling the piston rod of the lifting cylinder 3 to move upwards by a worker, driving the positioning seat 4 to move upwards by the piston rod, driving the PCB to move upwards by the positioning seat 4, enabling each disc 13 to correspondingly enter each through hole 20 in the upward movement process of the PCB, enabling the disc 13 to abut against the bottom of the through hole 20 after the piston rod of the lifting cylinder 3 is completely extended, observing whether the gap between the supporting plate 12 and the cross beam 6 in each detection mechanism 7 is increased or not by the worker on a display screen of the controller, if the gap between the supporting plate 12 and the cross beam 6 in one detection mechanism 7 is increased as shown in figures 4-5, indicating that the bottom of the through hole 20 corresponding to the detection mechanism 7 has residual copper 21, enabling the disc 13 to be jacked upwards by the residual copper 21, enabling the disc 13 to synchronously jack the guide column 11 and the supporting plate 12 upwards, so that the whole PCB is an unqualified product, controlling the piston rod of the lifting cylinder 3 to retract by the worker, a worker takes the unqualified PCB out of the sink 5 and conveys the unqualified PCB to an etching process; if the gaps between the supporting plates 12 and the cross beams 6 in all the detection mechanisms 7 are not changed as shown in fig. 6-7, it is indicated that no copper 21 is left at the bottoms of all the through holes 20, the whole PCB is qualified, and at this time, the worker controls the piston rod of the lifting cylinder 3 to reset and conveys the qualified PCB to a finished product area. Therefore, in the whole detection process, the through hole 20 is not required to be observed manually, the working strength of workers is greatly reduced, in addition, the residual copper 21 at each position of the through hole 20 can be completely detected, the phenomenon of leakage detection is avoided, and the detection precision of the residual copper is greatly improved.

S4, repeating the operations of the steps S2-S3, and continuously detecting the through holes in the PCB. Therefore, this detection device is once only to a plurality of through-holes 20 simultaneous detection on a PCB board, compares artifical with the visual detection, very big improvement detection efficiency.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a detection apparatus for detect not etching copper layer in PCB board, it includes workstation (1), sets firmly portal frame (2) on workstation (1) mesa, the bottom of workstation (1) has set firmly lift cylinder (3), and the piston rod of lift cylinder (3) runs through workstation (1) setting, its characterized in that: a positioning seat (4) is fixedly arranged at the extending end of a piston rod of the lifting cylinder (3), a sinking groove (5) is formed in the top surface of the positioning seat (4), the outer contour of the sinking groove (5) is consistent with that of the PCB, and a plurality of detection mechanisms (7) corresponding to through holes (20) in the PCB are arranged on a cross beam (6) of the portal frame (2); detection mechanism (7) are including high power electron magnifying glass (8), set firmly guide holder (9) in crossbeam (6) bottom and set up logical groove (10) on crossbeam (6), slidable mounting has guide post (11) in guide holder (9), crossbeam (6) setting is run through on the top of guide post (11), and extend and serve and set firmly backup pad (12), the basal surface of backup pad (12) supports on crossbeam (6), the bottom of guide post (11) is run through guide holder (9) setting downwards, and extend and serve and set firmly disc (13), mounting panel (14) have set firmly on the lateral wall that leads to groove (10), high power electron magnifying glass (8) set firmly on the terminal surface of mounting panel (14), the camera lens of high power electron magnifying glass (8) is towards the contact zone of backup pad (12) and crossbeam (6).

2. The inspection apparatus for inspecting an unetched copper layer of a PCB as claimed in claim 1, wherein: a groove body (16) is formed in the cross beam (6), the groove body (16) is communicated with an inner hole of the guide seat (9), and the guide column (11) penetrates through the groove body (16).

3. The inspection apparatus for inspecting an unetched copper layer of a PCB as claimed in claim 1, wherein: the device also comprises a controller, wherein the output joint of the high power electronic magnifier (8) is connected with the input end of the controller through a signal wire, and the electromagnetic valve of the lifting cylinder (3) is electrically connected with the controller.

4. The inspection apparatus for inspecting an unetched copper layer of a PCB as claimed in claim 1, wherein: the diameter of the disc (13) is equal to that of the through hole (20) on the PCB.

5. The inspection apparatus for inspecting an unetched copper layer of a PCB as claimed in claim 1, wherein: the disc (13), the guide post (11) and the support plate (12) are coaxially arranged.

6. The inspection apparatus for inspecting an unetched copper layer of a PCB as claimed in claim 1, wherein: the bottom surface of the positioning seat (4) is fixedly provided with a plurality of guide rods (17), and the guide rods (17) penetrate through the workbench (1) in a sliding mode.

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