CN215529449U

CN215529449U - PCB hinders and welds development unclean detection device

Info

Publication number: CN215529449U
Application number: CN202122017856.8U
Authority: CN
Inventors: 黄志刚; 柯勇; 赵宏静; 缪翀
Original assignee: Guangdong Tongyuan Precision Circuit Co ltd
Current assignee: Guangdong Tongyuan Precision Circuit Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-01-14
Anticipated expiration: 2031-08-25

Abstract

The utility model provides a PCB resistance welding development unclean detection device, which relates to the field of circuit board manufacturing and comprises an integral device, wherein the top of the integral device comprises a pickling section, a first washing section, a copper chloride solution section, a second washing section and a hot air drying section, a liquid pumping pipe is arranged on the side surface of the copper chloride solution section, a connecting pipe is arranged at the end part of the liquid pumping pipe and is connected with a flange of the liquid pumping pipe, a first water spray pipe and a second water spray pipe are respectively arranged at two ends of the connecting pipe, and the first water spray pipe and the second water spray pipe are both connected with the flange of the connecting pipe. Adopt the cupric chloride solution section, spray the horizontal line through the cupric chloride and hinder the printed circuit board after welding development and carry out the automation and spray the cupric chloride liquid medicine, under the condition that the copper face does not have the development unclean, will demonstrate even brown black, printed circuit board carries out the cupric chloride on the horizontal line and sprays the back of handling, uses automatic optical detection equipment to carry out optical scanning to printed circuit board, picks out the defective products, has not only improved the degree of accuracy that detects, has improved detection efficiency moreover.

Description

PCB hinders and welds development unclean detection device

Technical Field

The utility model relates to the technical field of circuit board manufacturing, in particular to a PCB solder mask development unclean detection device.

Background

The PCB is called a printed circuit board, also called a printed circuit board, and is an important electronic component, a support for electronic components, and a carrier for electrical connection of electronic components. It is called a "printed" circuit board because it is made using electronic printing.

The production of the PCB comprises the following procedures: opening the board → making the inner layer circuit → pressing → drilling the slot hole → copper deposition → plating the whole board → making the outer layer circuit → making the solder mask layer → surface treatment → molding. The solder mask layer is manufactured by coating a layer of solder mask ink on the PCB with the outer layer circuit except for the positions of a pad, a hole and the like for welding and curing the solder mask ink, so that the PCB is protected and prevented from being welded.

Chinese patent No. CN 201720687893.0's patent discloses a high-accuracy fine line way development production line of HDI, including the development section and the washing section that connect gradually, the development section is installed side by side on same production line roll table with the washing section, the washing section includes new liquid washing system, first overflow water washing system, second overflow water washing system, third overflow water washing system, fourth overflow water washing system, fifth overflow water washing system, sixth overflow water washing system, ultrasonic wave immersion cleaning system, seventh overflow water washing system, eighth overflow water washing system, ninth overflow water washing system, tenth overflow water washing system, eleventh overflow water washing system, twelfth overflow water washing system.

After the solder resist development of the printed circuit board, in order to prevent the problem of incomplete solder resist development, a copper chloride solution is manually coated on a pad to observe whether the copper surface of the pad is discolored, the method is greatly influenced by the operation of personnel, the coating uniformity of the copper chloride solution directly influences result judgment, the possibility of misjudgment exists, and the problems of uneven color, misjudgment and low detection efficiency exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides a PCB solder mask development unclean detection device.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a PCB hinders and welds development unclean detection device, includes whole device, whole device top includes pickling section, first washing section, copper chloride solution section, second washing section and hot-blast dry section, and pickling section, first washing section, copper chloride solution section, second washing section and hot-blast dry section adjacent fixed connection in proper order, copper chloride solution section side is equipped with the liquid suction pipe, the tip of liquid suction pipe is equipped with the connecting pipe, and connecting pipe and liquid suction pipe flange joint, the both ends of connecting pipe are equipped with first spray pipe and second spray pipe respectively, and first spray pipe and second spray pipe all with connecting pipe flange joint.

Preferably, the middle part of the whole device is provided with a transmission roller, the transmission roller array is arranged inside the whole device, two ends of the transmission roller are movably connected with the inner wall of the whole device, and the first water spraying pipe and the second water spraying pipe are respectively positioned under and above the transmission roller.

Preferably, the bottom surface of the first spray pipe and the top surface of the second spray pipe are both fixedly provided with nozzles in a threaded manner, and the nozzles are arrayed on the surfaces of the first spray pipe and the second spray pipe.

Preferably, both ends of the integral device are respectively provided with a plate inlet and a plate outlet, and the transmission rollers inside the plate inlet and the plate outlet are in movable transmission.

Preferably, the driving roller end part inside the plate inlet is provided with a driven wheel, the surface of the driven wheel is provided with a conveying belt, the bottom end of the conveying belt is provided with a driving wheel, the driving wheel is movably connected with the driven wheel through the conveying belt, the side face of the driving wheel is provided with a first motor, and an output shaft of the first motor is fixedly connected with the driving wheel.

Preferably, the inside fixed plate that is equipped with of hot-blast trunk, and fixed plate and integrated device inner wall fixed connection, the fan has been inlayed to the fixed plate inside, and the tip and the inside swing joint of fixed plate of fan.

Preferably, the fans in the two fixing plates are respectively positioned right above and right below the transmission rollers, the second motor is arranged right below the fans, an output shaft of the second motor is fixedly connected with the center of the fans, and the second motor is fixedly installed on the bottom surface inside the integral device.

Preferably, a transmission device is arranged between every two adjacent transmission rollers, and the adjacent transmission rollers are movably connected through the transmission device.

Preferably, the inside of the pickling section, the first washing section, the copper chloride solution section and the second washing section respectively comprise two first water spray pipes and two second water spray pipes, one ends of the first water spray pipes and one ends of the second water spray pipes are fixedly connected with the inner wall of the integral device, and the first water spray pipes and the second water spray pipes are in mirror symmetry.

Advantageous effects

In the utility model, a copper chloride solution section is adopted, the printed circuit board subjected to resistance welding development is automatically sprayed with copper chloride liquid medicine through a copper chloride spraying horizontal line, uniform brownish black is presented under the condition that the copper surface is not developed and is not clean, after the printed circuit board is subjected to copper chloride spraying treatment on the horizontal line, the printed circuit board is optically scanned by using automatic optical detection equipment, defective products are selected, the detection accuracy is improved, and the detection efficiency is improved.

Drawings

FIG. 1 is an isometric view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a partial cross-sectional view of the present invention;

fig. 4 is a top view of the present invention.

Illustration of the drawings:

1. an acid washing section; 2. a first water washing section; 3. a copper chloride solution section; 4. a second water washing section; 5. a hot air drying section; 6. a plate outlet; 7. an integral device; 8. a connecting pipe; 9. a first water spray pipe; 10. a transmission device; 11. a conveyor belt; 12. a driving wheel; 13. a first motor; 14. a driven wheel; 15. a drive roller; 16. a plate inlet; 17. a second water spray pipe; 18. a nozzle; 19. a second motor; 20. a fan; 21. a fixing plate; 22. a liquid pumping pipe.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

The specific embodiment is as follows:

referring to fig. 1-4, a PCB hinders and welds incomplete detection device of development, including integrated device 7, integrated device 7 top includes pickling section 1, first washing section 2, copper chloride solution section 3, second washing section 4 and hot-blast dry section 5, and pickling section 1, first washing section 2, copper chloride solution section 3, second washing section 4 and hot-blast dry section 5 are adjacent fixed connection in proper order, 3 sides in copper chloride solution section are equipped with liquid suction pipe 22, the tip of liquid suction pipe 22 is equipped with connecting pipe 8, and connecting pipe 8 and liquid suction pipe 22 flange joint, the both ends of connecting pipe 8 are equipped with first spray pipe 9 and second spray pipe 17 respectively, and first spray pipe 9 and second spray pipe 17 all with connecting pipe 8 flange joint.

The pickling section 1 is used for preparing a 1% -2% sulfuric acid solution, the copper chloride solution section 3 is used for preparing a 2% -4% copper chloride solution, the pickling section 1 comprises a filter pump, a liquid medicine cylinder, a first water spraying pipe 9 and a second water spraying pipe 17, the filter pump is arranged in the liquid medicine cylinder, and the filter pump is connected with the first water spraying pipe 9 and the second water spraying pipe 17 through a liquid pumping pipe 22 and a connecting pipe 8.

The device automatically sprays the copper chloride liquid medicine to the printed circuit board subjected to solder mask development through the copper chloride spraying horizontal line, and the printed circuit board can present uniform brownish black under the condition that the copper surface is not developed cleanly. After the copper chloride spraying treatment is carried out on the printed circuit board on the horizontal line, the AOI equipment is used for carrying out optical scanning on the printed circuit board, defective products are selected, the detection accuracy is improved, and the detection efficiency is improved.

The middle part of the integrated device 7 is provided with a transmission roller 15, the transmission rollers 15 are arrayed inside the integrated device 7, two ends of the transmission roller 15 are movably connected with the inner wall of the integrated device 7, and the first water spray pipe 9 and the second water spray pipe 17 are respectively positioned under and above the transmission roller 15.

The bottom surface of first spray pipe 9 and the equal thread fixed mounting of second spray pipe 17 top surface have nozzle 18, and nozzle 18 array is on first spray pipe 9 and second spray pipe 17 surface, pickling section 1, first washing section 2, copper chloride solution section 3, the inside two first spray pipes 9 and two second spray pipes 17 of all including of second washing section 4, and the one end of first spray pipe 9 and second spray pipe 17 all with 7 inner wall fixed connection of integrated device, and first spray pipe 9 and second spray pipe 17 are mirror symmetry.

The two ends of the integrated device 7 are respectively provided with a plate inlet 16 and a plate outlet 6, and the transmission rollers 15 in the plate inlet 16 and the plate outlet 6 are movably driven.

The end part of a transmission roller 15 inside the plate inlet 16 is provided with a driven wheel 14, the surface of the driven wheel 14 is provided with a transmission belt 11, the bottom end of the transmission belt 11 is provided with a driving wheel 12, the driving wheel 12 and the driven wheel 14 are movably connected through the transmission belt 11, the side surface of the driving wheel 12 is provided with a first motor 13, an output shaft of the first motor 13 is fixedly connected with the driving wheel 12, a transmission device 10 is arranged between every two adjacent transmission rollers 15, and the adjacent transmission rollers 15 are movably connected through the transmission device 10.

Inside fixed plate 21 that is equipped with of hot-blast main section 5, and fixed plate 21 and integrated device 7 inner wall fixed connection, fixed plate 21 is inside to be inlayed and is had fan 20, and the inside swing joint of tip and fixed plate 21 of fan 20, fan 20 in two fixed plates 21 is located transmission roller 15 directly over and directly under respectively, be equipped with second motor 19 under fan 20, and the output shaft of second motor 19 and fan 20 central point put fixed connection, and second motor 19 fixed mounting is in the inside bottom surface of integrated device 7.

Adding a copper chloride liquid medicine into a liquid medicine tank, starting the copper chloride liquid medicine spraying, conveying the plate to be tested subjected to solder mask development to a copper chloride solution section 3 through a horizontal line transmission roller 15 for spraying, and normally, the copper surface of the printed circuit board without incomplete development presents uniform brown black; the copper surface of the printed circuit board with incomplete development can generate mottling or copper surface brightening phenomena, gray level setting is carried out on automatic optical detection equipment according to the color of the copper surface tested to be normal by copper chloride before automatic optical detection scanning, and automatic scanning is carried out on a pad of the printed circuit board; when the AOI equipment detects that the printed circuit board has abnormality, a poor position can be displayed on a screen.

The circuit board enters the integrated device 7 through the transmission of the transmission roller 15 from the board inlet 16, then sequentially passes through the pickling section 1, the first washing section 2, the copper chloride solution section 3, the second washing section 4 and the hot air drying section 5, and finally comes out through the board outlet 6 for optical detection.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a PCB hinders and welds not clean detection device of development, includes whole device (7), its characterized in that: whole device (7) top is including pickling section (1), first washing section (2), copper chloride solution section (3), second washing section (4) and hot-blast dry section (5), and pickling section (1), first washing section (2), copper chloride solution section (3), second washing section (4) and hot-blast dry section (5) adjacent fixed connection in proper order, copper chloride solution section (3) side is equipped with liquid suction pipe (22), the tip of liquid suction pipe (22) is equipped with connecting pipe (8), and connecting pipe (8) and liquid suction pipe (22) flange joint, the both ends of connecting pipe (8) are equipped with first spray pipe (9) and second spray pipe (17) respectively, and first spray pipe (9) and second spray pipe (17) all with connecting pipe (8) flange joint.

2. The PCB solder mask development unclean detection device of claim 1, characterized in that: the middle part of the integral device (7) is provided with a transmission roller (15), the transmission rollers (15) are arrayed inside the integral device (7), two ends of the transmission roller (15) are movably connected with the inner wall of the integral device (7), and the first water spray pipe (9) and the second water spray pipe (17) are respectively positioned under and over the transmission roller (15).

3. The PCB solder mask development unclean detection device of claim 1, characterized in that: the bottom surface of the first water spray pipe (9) and the top surface of the second water spray pipe (17) are both fixedly provided with nozzles (18) in a threaded manner, and the nozzles (18) are arrayed on the surfaces of the first water spray pipe (9) and the second water spray pipe (17).

4. The PCB solder mask development unclean detection device of claim 1, characterized in that: and the two ends of the integral device (7) are respectively provided with a plate inlet (16) and a plate outlet (6), and the transmission rollers (15) in the plate inlet (16) and the plate outlet (6) are movably transmitted.

5. The PCB solder mask development unclean detection device of claim 4, characterized in that: the transmission roller (15) tip of advancing board mouth (16) inside is equipped with from driving wheel (14), from driving wheel (14) surface being equipped with conveyer belt (11), the bottom of conveyer belt (11) is equipped with action wheel (12), and action wheel (12) and follow driving wheel (14) pass through conveyer belt (11) swing joint, the side of action wheel (12) is equipped with first motor (13), and the output shaft and the action wheel (12) fixed connection of first motor (13).

6. The PCB solder mask development unclean detection device of claim 1, characterized in that: inside fixed plate (21) that is equipped with of hot-blast dry section (5), and fixed plate (21) and integrated device (7) inner wall fixed connection, fan (20) have been inlayed to fixed plate (21) inside, and the tip and the inside swing joint of fixed plate (21) of fan (20).

7. The PCB solder mask development unclean detection device of claim 6, characterized in that: fans (20) in the two fixing plates (21) are respectively positioned right above and right below the transmission rollers (15), a second motor (19) is arranged right below the fans (20), an output shaft of the second motor (19) is fixedly connected with the center of the fans (20), and the second motor (19) is fixedly installed on the inner bottom surface of the integral device (7).

8. The PCB solder mask development unclean detection device of claim 2, characterized in that: and transmission devices (10) are arranged between every two adjacent transmission rollers (15), and the adjacent transmission rollers (15) are movably connected through the transmission devices (10).

9. The PCB solder mask development unclean detection device of claim 1, characterized in that: pickling section (1), first washing section (2), copper chloride solution section (3), second washing section (4) are inside all including two first spray pipes (9) and two second spray pipes (17), and the one end of first spray pipe (9) and second spray pipe (17) all with integrated device (7) inner wall fixed connection, and first spray pipe (9) and second spray pipe (17) are mirror symmetry.