PCB online double-sided automatic optical scanning device

Abstract

The utility model discloses a PCB on-line double-sided automatic optical scanning device which comprises a scanning machine body, a first conveying mechanism is installed at the position of an inlet of the scanning machine body, a limiting mechanism is installed on the first conveying mechanism, and a second conveying mechanism is installed on the lower portion of an outlet of the scanning machine body. A pressing guiding and conveying mechanism is installed on the scanning machine body and located above the second conveying mechanism, and an upper CCD image collecting mechanism is installed in the scanning machine body and located on the upper portion of the gap between the first conveying mechanism and the second conveying mechanism. The beneficial effects of the utility model are that when optical scanning is carried out on the PCB, on one hand, the PCB before scanning can be effectively clamped and limited under the action of the limiting mechanism, and on the other hand, the pressing and guiding of the PCB after optical scanning can be realized under the action of the pressing and guiding mechanism and the second conveying mechanism; the offset and dislocation of the PCB in the optical scanning process are effectively avoided, so that the accuracy of the optical scanning detection result of the PCB is improved.

Description

Technical Field

[0001] The utility model relates to the field of optical scanning equipment, in particular to an online double-sided automatic optical scanning device for PCB. Background Art

[0002] In the PCB production process, the electrical performance must be intact. After the outer layer etching is completed, the PCB board needs to be inspected to screen out open circuits, short circuits, gaps, offset holes, thin lines and other defects. The traditional inspection method is manual inspection, which has a high miss rate, cannot guarantee accuracy, and has low production efficiency. In order to improve production efficiency and product yield, automation and intelligent requirements are put forward for the PCB outer layer inspection method.

[0003] The Chinese patent with patent number CN215640922U discloses an online double-sided automatic optical scanning device for PCB, including a housing, a mounting mechanism, a feeding mechanism, an optical scanning mechanism and a discharging mechanism; the feeding mechanism includes a feeding motor and a feeding transmission roller connected to the feeding motor, the discharging mechanism includes a discharging motor and a discharging transmission roller connected to the discharging transmission roller, the optical scanning mechanism is arranged in the housing, and includes an upper CCD image acquisition mechanism, a lower CCD image acquisition mechanism and a detection platform, the upper CCD image acquisition mechanism and the lower CCD image acquisition mechanism are respectively located on the upper and lower sides of the detection platform; the feeding transmission roller and the discharging transmission roller are both arranged in the horizontal direction, and the detection platform is located between the feeding transmission roller and the discharging transmission roller, and the three are connected and transmitted to form a PCB board transmission line.

[0004] When the PCB online double-sided automatic optical scanning device described in the above patent is used, although it can improve the optical scanning efficiency of the PCB board by double-sided scanning, since the PCB board is directly placed on the conveying mechanism during the optical scanning process without limiting, it is easy for the PCB board to be offset and misaligned during the conveying process during the optical scanning process, resulting in inaccurate final optical scanning detection results. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a PCB online double-sided automatic optical scanning device which can effectively limit the position of the PCB board during the optical scanning process and avoid the deviation of the PCB board during the optical scanning process in view of the current status of the prior art.

[0006] The utility model is realized through the following technical scheme: the utility model proposes an online double-sided automatic optical scanning device for PCB, comprising a scanning body, a conveying mechanism 1 is installed at the inlet of the scanning body, a limiting mechanism is installed on the conveying mechanism 1, a conveying mechanism 2 is installed at the lower part of the outlet of the scanning body, a pressing and guiding mechanism is installed on the scanning body above the conveying mechanism 2, an upper CCD image acquisition mechanism is installed at the upper part of the scanning body at the gap between the conveying mechanism 1 and the conveying mechanism 2, and a lower CCD image acquisition mechanism is installed at the lower part of the scanning body at the gap between the conveying mechanism 1 and the conveying mechanism 2.

[0007] By adopting the above technical solution, when the PCB board is optically scanned, the limiting mechanism can be used to effectively clamp and limit the PCB board before scanning, and the pressing and guiding mechanism and the second conveying mechanism can be used to achieve pressing and guiding of the PCB board after optical scanning, effectively avoiding offset and misalignment of the PCB board during the optical scanning process, thereby improving the accuracy of the optical scanning detection result of the PCB board.

[0008] Furthermore, the conveying mechanism 2 has the same structure as the conveying mechanism 1, and the conveying mechanism 1 includes a conveying frame connected to the scanning body by bolts, two symmetrically distributed rollers rotatably installed in the conveying frame, a conveyor belt nested outside the roller 1, and a motor 1 installed on the outside side of the conveying frame.

[0009] By adopting the above technical solution, when a PCB is placed on the conveying mechanism 1, the PCB can be conveyed into the scanning body under the action of the conveying mechanism 1.

[0010] Furthermore, the motor 1 is connected to the conveying frame by bolts, and the motor 1 is connected to the roller of one of the rollers 1 through a coupling.

[0011] By adopting the above technical solution, the motor drives the roller to rotate, which can realize the rotation of the conveyor belt to achieve the feeding and conveying of the PCB board.

[0012] Furthermore, the limiting mechanism includes a slide rail bonded to the conveyor belt, a slide rod installed in the slide rail, a slider symmetrically installed on both sides of the slide rod, a clamping column rotatably installed on the top of the slider, and a spring fixed between the slider and the slide rail.

[0013] By adopting the above technical solution, when the PCB board to be scanned is placed between the clamping columns that have been pulled apart, the clamping columns only need to be loosened so that the clamping columns can be automatically moved closer to the PCB board under the action of the spring, thereby achieving clamping and limiting of the PCB board when it is transported before optical scanning.

[0014] Furthermore, the slider is slidably connected to the slide rod, the slide rod passes through the spring, and the slider is slidably connected to the slide rod.

[0015] By adopting the above technical solution, the spring is mainly used for automatically resetting the slider after being pushed apart, thereby realizing convenient transportation of the PCB board.

[0016] Furthermore, the clamping and guiding mechanism includes an electric push rod connected to the scanning body by bolts, a U-shaped frame fixed to the telescopic part of the electric push rod, two rollers symmetrically installed in the U-shaped frame, a guide belt nested on the outside of the rollers, and a motor 2 fixed on the outside of the U-shaped frame.

[0017] By adopting the above technical solution, when the conveying mechanism 1 conveys the PCB board to between the upper CCD image acquisition mechanism and the lower CCD image acquisition mechanism, the conveying mechanism 1 stops. At this time, the scanned part of the PCB board can be clamped and clamped under the conveying mechanism 2 and the clamping and guiding mechanism. Then, with the operation of the conveying mechanism 2 and the clamping and guiding mechanism, the inspected PCB board will be pulled out from the limiting mechanism, thereby realizing the clamping and guiding of the PCB board after optical inspection.

[0018] Furthermore, the motor 2 is connected to the U-shaped frame by bolts, and the motor 2 is connected to the roller of one of the rollers 2 through a coupling.

[0019] By adopting the above technical solution, the second motor is mainly used to realize the rotation of the second roller, so as to realize the rotation of the guide belt, and the PCB board is pressed and guided by means of the guide belt and the belt body on the second conveying mechanism.

[0020] Furthermore, a support leg is welded at each of the four corners of the bottom end of the scanning body, and a touch panel is fixed to the middle of the outer side wall of the scanning body by bolts. The touch panel is electrically connected to the conveying mechanism 1, the conveying mechanism 2, the clamping and guiding mechanism, and the scanning body.

[0021] By adopting the above technical solution, under the action of the touch panel, the first conveying mechanism, the second conveying mechanism, the pressing and guiding mechanism and the scanning body can all work in coordination to ensure efficient and accurate detection of PCB boards.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] When the PCB board is optically scanned, the utility model can, on the one hand, effectively clamp and limit the PCB board before scanning under the action of the limiting mechanism, and on the other hand, can realize the pressing and guiding of the PCB board after optical scanning under the action of the pressing and guiding mechanism and the conveying mechanism, effectively avoiding the deviation and dislocation of the PCB board during the optical scanning process, thereby improving the accuracy of the optical scanning detection result of the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a PCB online double-sided automatic optical scanning device described in the utility model;

[0025] Figure 2 It is a main cross-sectional view of a PCB online double-sided automatic optical scanning device described in the utility model;

[0026] Figure 3 This is a PCB online double-sided automatic optical scanning device described in the utility model. Figure 1 The enlarged view of point A in the middle;

[0027] Figure 4 It is a left sectional view of a limiting mechanism in a PCB online double-sided automatic optical scanning device described in the utility model;

[0028] Figure 5 It is a structural schematic diagram of a pressing and guiding mechanism in a PCB online double-sided automatic optical scanning device described in the utility model.

[0029] The following are the descriptions of the reference numerals:

[0030] 1. Scanning body; 2. Limiting mechanism; 201. Slide rail; 202. Slide rod; 203. Spring; 204. Clamping column; 205. Slider; 3. Conveying mechanism 1; 301. Conveying frame; 302. Motor 1; 303. Conveying belt; 304. Roller 1; 4. Support legs; 5. Conveying mechanism 2; 6. Pressing and guiding mechanism; 601. U-shaped frame; 602. Electric push rod; 603. Conveying belt; 604. Roller 2; 605. Motor 2; 7. Upper CCD image acquisition mechanism; 8. Lower CCD image acquisition mechanism; 9. Touch panel. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] like Figure 1-Figure 3As shown, a PCB online double-sided automatic optical scanning device in this embodiment includes a scanning body 1, a conveying mechanism 1 3 is installed at the inlet of the scanning body 1, a limiting mechanism 2 is installed on the conveying mechanism 1 3, a conveying mechanism 2 5 is installed at the lower part of the outlet of the scanning body 1, a pressing and guiding mechanism 6 is installed on the scanning body 1 above the conveying mechanism 2 5, an upper CCD image acquisition mechanism 7 is installed at the upper part of the gap between the conveying mechanism 1 3 and the conveying mechanism 2 5 in the scanning body 1, and a lower CCD image acquisition mechanism 8 is installed at the lower part of the gap between the conveying mechanism 1 3 and the conveying mechanism 2 5 in the scanning body 1. Among them, when the PCB board is optically scanned, the PCB board before scanning can be effectively clamped and limited by the limiting mechanism 2, and the pressing and guiding mechanism 6 and the conveying mechanism 2 5 can realize the pressing and guiding of the PCB board after optical scanning, which effectively avoids the offset and dislocation of the PCB board during the optical scanning process, thereby improving the accuracy of the optical scanning detection result of the PCB board.

[0033] like Figure 1-Figure 2 As shown, in this embodiment, the conveying mechanism 25 has the same structure as the conveying mechanism 13. The conveying mechanism 13 includes a conveying frame 301 connected to the scanning body 1 by bolts, two symmetrically distributed rollers 1304 rotatably installed in the conveying frame 301, a conveying belt 303 nested on the outside of the roller 1304, and a motor 1302 installed on the outside of the conveying frame 301. When the PCB board is placed on the conveying mechanism 13, the PCB can be conveyed to the scanning body 1 under the action of the conveying mechanism 13. The motor 1302 is bolted to the conveying frame 301, and the motor 1302 is connected to the roller shaft of one of the rollers 1304 through a coupling. The motor 1302 drives the roller 1304 to rotate to realize the rotation of the conveying belt 303, so as to realize the feeding and conveying of the PCB board.

[0034] like Figure 1 , Figure 3 and Figure 4 As shown, in this embodiment, the limiting mechanism 2 includes a slide rail 201 bonded to the conveyor belt 303, a slide bar 202 installed in the slide rail 201, a slider 205 symmetrically installed on both sides of the slide bar 202, a clamping column 204 rotatably installed on the top of the slider 205, and a spring 203 fixed between the slider 205 and the slide rail 201. When the PCB board to be scanned is placed between the clamping columns 204 that are pulled apart, the clamping columns 204 only need to be loosened so that the clamping columns 204 can be automatically moved toward the PCB board under the action of the spring 203, so as to achieve clamping and limiting of the PCB board when it is transported before optical scanning. The slider 205 is slidably connected to the slide bar 202, the slide bar 202 passes through the spring 203, and the slider 205 is slidably connected to the slide bar 202. The spring 203 is mainly used for the automatic resetting of the slider 205 after it is pulled apart, so as to achieve convenient transportation of the PCB board.

[0035] like Figure 1 Figure 2 and Figure 5 As shown, in this embodiment, the clamping and guiding mechanism 6 includes an electric push rod 602 connected to the scanning body 1 by bolts, a U-shaped frame 601 fixed to the telescopic part of the electric push rod 602, two rollers 604 symmetrically installed in the U-shaped frame 601, a guiding belt 603 nested on the outside of the roller 604, and a motor 605 fixed on the outside of the U-shaped frame 601.

[0036] When the conveying mechanism 1 3 conveys the PCB board to between the upper CCD image acquisition mechanism 7 and the lower CCD image acquisition mechanism 8, the conveying mechanism 1 3 stops. At this time, the scanned part of the PCB board can be clamped and clamped under the conveying mechanism 2 5 and the clamping and guiding mechanism 6. Then, with the operation of the conveying mechanism 2 5 and the clamping and guiding mechanism 6, the inspected PCB board will be pulled out from the limiting mechanism 2, thereby realizing the clamping and guiding of the PCB board after optical inspection.

[0037] Among them, the motor 2 605 is bolted to the U-shaped frame 601, and the motor 2 605 is connected to the roller of one of the rollers 2 604 through a coupling. The motor 2 605 is mainly used to realize the rotation of the roller 2 604, so as to realize the rotation of the guide belt 603. The PCB board is pressed and guided by the guide belt 603 and the belt body on the conveying mechanism 2 5. A support leg 4 is welded at the four corners of the bottom end of the scanning body 1 respectively. A touch panel 9 is also fixed to the middle of the outer side wall of the scanning body 1 by bolts. The touch panel 9 is electrically connected to the conveying mechanism 1 3, the conveying mechanism 2 5, the pressing and guiding mechanism 6 and the scanning body 1. Under the action of the touch panel 9, the conveying mechanism 1 3, the conveying mechanism 2 5, the pressing and guiding mechanism 6 and the scanning body 1 can work in coordination to ensure efficient and accurate detection of the PCB board.

[0038] The specific implementation process of this embodiment is as follows: when it is necessary to perform optical scanning and detection on the PCB board, firstly, the device is connected to the external power supply, and the PCB board to be detected is fixed under the action of the limit mechanism 2, and then the PCB board is transported to the scanning body 1 with the help of the conveying mechanism 1 3. When the end of the PCB board is transported between the upper CCD image acquisition mechanism 7 and the lower CCD image acquisition mechanism 8, the PCB board will be scanned and detected on both sides under the action of the CCD image acquisition mechanism and the lower CCD image acquisition mechanism 8. The detection structure is finally displayed on the touch panel 9. At this time, the conveying mechanism 1 3 stops running, and the end of the PCB board after detection contacts the belt body on the conveying mechanism 2 5, and then the pressing and guiding mechanism 6 is lowered, so that the scanned PCB board can be transported under the action of the pressing and guiding mechanism 6 and the conveying mechanism 2 5 to avoid the PCB board from being offset and misaligned after scanning. Since the clamping column 204 is rotating during the pressing and guiding process, the normal conveying of the scanned PCB board can be achieved under the cooperation of the pressing and guiding mechanism 6 and the conveying mechanism 2 5.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A PCB online double-sided automatic optical scanning device, characterized in that: The invention comprises a scanning body (1), wherein a conveying mechanism 1 (3) is installed at the inlet of the scanning body (1), a limiting mechanism (2) is installed on the conveying mechanism 1 (3), a conveying mechanism 2 (5) is installed at the lower part of the outlet of the scanning body (1), a pressing and guiding mechanism (6) is installed on the scanning body (1) above the conveying mechanism 2 (5), an upper CCD image acquisition mechanism (7) is installed at the upper part of the gap between the conveying mechanism 1 (3) and the conveying mechanism 2 (5) in the scanning body (1), and a lower CCD image acquisition mechanism (8) is installed at the lower part of the gap between the conveying mechanism 1 (3) and the conveying mechanism 2 (5) in the scanning body (1).

2. The PCB online double-sided automatic optical scanning device according to claim 1, characterized in that: The conveying mechanism 2 (5) has the same structure as the conveying mechanism 1 (3), and the conveying mechanism 1 (3) comprises a conveying frame (301) connected to the scanning body (1) by bolts, two symmetrically distributed rollers 1 (304) rotatably mounted in the conveying frame (301), a conveying belt (303) nested outside the rollers 1 (304), and a motor 1 (302) mounted on one side outside the conveying frame (301).

3. The PCB online double-sided automatic optical scanning device according to claim 2, characterized in that: The motor one (302) is bolted to the conveying frame (301), and the motor one (302) is connected to the roller shaft of one of the rollers one (304) via a coupling.

4. The PCB online double-sided automatic optical scanning device according to claim 3, characterized in that: The limiting mechanism (2) comprises a slide rail (201) bonded to the conveyor belt (303), a slide rod (202) installed in the slide rail (201), a slider (205) symmetrically installed on both sides of the slide rod (202), a clamping column (204) rotatably installed on the top of the slider (205), and a spring (203) fixed between the slider (205) and the slide rail (201).

5. The PCB online double-sided automatic optical scanning device according to claim 4, characterized in that: The slider (205) is slidably connected to the slide bar (202); the slide bar (202) passes through the spring (203); and the slider (205) is slidably connected to the slide bar (202).

6. The PCB online double-sided automatic optical scanning device according to claim 1, characterized in that: The pressing and guiding mechanism (6) comprises an electric push rod (602) connected to the scanning body (1) by bolts, a U-shaped frame (601) fixed to the telescopic part of the electric push rod (602), two rollers (604) symmetrically installed in the U-shaped frame (601), a guiding belt (603) nested outside the rollers (604), and a motor (605) fixed outside the U-shaped frame (601).

7. The PCB online double-sided automatic optical scanning device according to claim 6, characterized in that: The second motor (605) is bolted to the U-shaped frame (601), and the second motor (605) is connected to the roller of one of the second rollers (604) via a coupling.

8. The PCB online double-sided automatic optical scanning device according to claim 1, characterized in that: A support leg (4) is welded to each of the four corners of the bottom end of the scanning body (1); a touch panel (9) is also fixed to the middle of an outer side wall of the scanning body (1) by bolts; the touch panel (9) is electrically connected to the first conveying mechanism (3), the second conveying mechanism (5), the pressing and guiding mechanism (6) and the scanning body (1).

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