PCB contact surface oiling device

Abstract

The utility model relates to the technical field of PCB (Printed Circuit Board) oiling, in particular to a PCB contact surface oiling device, which comprises a conveying track for conveying a PCB, a detection mechanism for detecting the feeding of the PCB, a positioning mechanism for positioning the PCB and a transfer printing mechanism for oiling the PCB, the pad printing mechanism comprises a pad printing base plate, an oil cup, an oil cup driving mechanism and a slicking mechanism, wherein a groove is carved in the pad printing base plate corresponding to a to-be-oiled area of the PCB, the oil cup is used for containing pad printing oil, the oil cup driving mechanism is used for driving the oil cup to fill the pad printing oil into the groove of the pad printing base plate, and the slicking mechanism is used for slicking the pad printing oil in the groove of the pad printing base plate. And the pad printing rubber head is used for sucking the pad printing oil in the groove of the pad printing base plate and transferring the pad printing oil to a to-be-oiled area on the PCB. According to the PCB contact surface oiling device, by adopting a transfer printing oiling mode, the oiling uniformity, the oiling accuracy and the oil film thickness of a metal contact surface or a carbon film contact surface of the PCB can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB oiling, in particular to a PCB board contact surface oiling device. Background Art

[0002] In the field of electronic product manufacturing, the uniformity and accuracy of oiling the metal contact surface or carbon film contact surface of the PCB board plays a vital role in the contact reliability, durability and safety of the metal surface and other metal contacts. Good uniformity and accuracy of oiling can effectively reduce arc damage, circuit carbonization, malfunction or product failure caused by poor contact.

[0003] There are already some technical solutions to solve the problem of uniformity and accuracy of oiling the metal contact surface or carbon film contact surface of PCB. The traditional oiling method mainly adopts manual oiling or spraying, but this method has the problem of difficulty in ensuring uniformity and accuracy of oiling. In addition, due to the instability and error of manual operation, it is easy to cause too much or too little oiling, which in turn affects the contact reliability and life durability of the metal surface and other metal contacts.

[0004] In order to solve the problem of oiling uniformity and accuracy, some existing technologies use steel screen printing oiling. This method uses a special steel screen to print ink evenly on the metal contact surface or carbon film contact surface of the PCB board, thereby improving the uniformity and accuracy of oiling. However, the screen printing oiling method still has some problems, such as the inaccurate control of ink flow during the printing process, and the oiling thickness is subject to certain restrictions, which easily leads to uneven oiling.

[0005] Although the steel screen printing oiling method has been improved to a certain extent compared to the traditional oiling method, there are still some problems and limitations. First, the existing steel screen printing oiling method has certain inaccuracies in ink flow control and cannot fully guarantee the uniformity of the oiling and the thickness of the oil film. Secondly, since the screen printing oiling method requires control and adjustment of the ink during the oiling process, the operation process is relatively cumbersome and requires high technical requirements as well as labor and production costs. In addition, the existing steel screen printing oiling method cannot effectively solve the problem of too much or too little oiling, and there is still a lack of uniformity and accuracy in the oiling. Utility Model Content

[0006] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide a PCB board contact surface oiling device.

[0007] The purpose of the utility model is achieved through the following technical solutions: a PCB contact surface oiling device, comprising a conveying track for conveying PCB boards, a detection mechanism for detecting PCB board materials, a positioning mechanism for positioning PCB boards and a pad printing mechanism for oiling the PCB boards, the pad printing mechanism comprising a pad printing pad with grooves engraved corresponding to the areas to be oiled on the PCB boards, an oil cup for holding pad printing oil, an oil cup driving mechanism for driving the oil cup to load the pad printing oil into the pad printing pad groove, a scraping mechanism for scraping the pad printing oil in the pad printing pad groove, a pad printing rubber head for absorbing the pad printing oil in the pad printing pad groove and transferring it to the areas to be oiled on the PCB boards, and a rubber head driving mechanism for driving the pad printing rubber head to move from the pad printing pad groove to the areas to be oiled on the PCB boards.

[0008] Furthermore, the detection mechanism is installed at the front end of the positioning mechanism, and the pad printing mechanism is arranged opposite to the positioning mechanism.

[0009] Furthermore, the detection mechanism includes an infrared sensor, and the infrared sensor is electrically connected to the control device.

[0010] Furthermore, the positioning mechanism includes a U-shaped positioning block.

[0011] Furthermore, the groove depth of the pad printing plate is 0.1-1.0 mm.

[0012] Furthermore, an oil filling port is provided at the bottom of the oil cup, and a control valve is provided at the oil filling port.

[0013] Furthermore, the oil cup driving mechanism includes a first driving mechanism for driving the oil cup to move forward and backward and a second driving mechanism for driving the oil cup to move up and down.

[0014] Furthermore, the scraping mechanism includes a scraper and a third driving mechanism for driving the scraper to move left and right.

[0015] Furthermore, the pad printing rubber head is hemispherical.

[0016] Furthermore, the pad driving mechanism includes a fourth driving mechanism for driving the pad printing pad to move forward and backward and a fifth driving mechanism for driving the pad printing pad to move up and down.

[0017] The beneficial effect of the utility model is that the PCB board contact surface oiling device of the utility model can improve the oiling uniformity, accuracy and oil film thickness of the metal contact surface or carbon film contact surface of the PCB board by adopting the pad printing oiling method, further improve product reliability, and reduce the occurrence of arc damage, circuit carbonization, malfunction or product failure.

[0018] The PCB contact surface oiling device of the utility model effectively solves the problems of insufficient oiling uniformity and accuracy and oil film thickness in the prior art, improves the reliability and durability of the product, and the pad printing oiling method is suitable for mass production, has high production efficiency, and is easy to realize automated production and control; it has important practical value and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0020] The reference numerals in the drawings are: conveying track 1, pad printing plate 2, groove 21, oil cup 3, pad printing rubber head 4, infrared sensor 5, control device 6, U-shaped positioning block 7, scraper 8. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of those skilled in the art, the following embodiments and attached Figure 1 To further illustrate the present invention, the contents mentioned in the implementation mode are not intended to limit the present invention.

[0022] See Figure 1 , a PCB contact surface oiling device, comprising a conveying track 1 for conveying PCB boards, a detection mechanism for detecting PCB board materials, a positioning mechanism for positioning PCB boards, and a pad printing mechanism for oiling the PCB boards, the pad printing mechanism comprising a pad printing pad 2 with grooves 21 engraved corresponding to the area to be oiled of the PCB board, an oil cup 3 for holding pad printing oil, an oil cup driving mechanism for driving the oil cup 3 to load the pad printing oil into the groove 21 of the pad printing pad 2, a scraping mechanism for scraping the pad printing oil in the groove 21 of the pad printing pad 2, a pad printing rubber head 4 for absorbing the pad printing oil in the groove 21 of the pad printing pad 2 and transferring it to the area to be oiled on the PCB board, and a rubber head driving mechanism for driving the pad printing rubber head 4 to move from the groove 21 of the pad printing pad 2 to the area to be oiled on the PCB board.

[0023] When the PCB contact surface oiling device of the utility model is used, the detection mechanism is used to detect the PCB board feed material to ensure that the parts are loaded into the conveying channel, and information is fed back to the feeding system, the PCB board moves to the positioning mechanism for positioning, the pad printing oil in the oil cup 3 is injected into the groove 21 of the pad printing pad 2, the scraping mechanism scrapes the pad printing oil in the groove 21 of the pad printing pad 2, the pad printing rubber head 4 moves to the groove 21 of the pad printing pad 2, absorbs the pad printing oil in the groove 21 of the pad printing pad 2, and then moves to the PCB board to be oiled area, transfers the absorbed pad printing oil to the PCB board to be oiled area, the pad printed PCB board enters the next process, and the subsequent PCB boards are moved to the positioning mechanism in turn for oiling operation.

[0024] The PCB board contact surface oiling device of the utility model can improve the oiling uniformity, accuracy and oil film thickness of the metal contact surface or carbon film contact surface of the PCB board by adopting the pad printing oiling method, further improve product reliability, and reduce the occurrence of arc damage, circuit carbonization, malfunction or product failure.

[0025] In this embodiment, the detection mechanism is installed at the front end of the positioning mechanism, and the pad printing mechanism is arranged opposite to the positioning mechanism. The arrangement of the above structure facilitates pad printing operation.

[0026] In this embodiment, the detection mechanism includes an infrared sensor 5, and the infrared sensor 5 is electrically connected to a control device 6. The infrared sensor 5 can detect whether the PCB board is loaded, and feed back the information to the feeding system through the control device 6.

[0027] In this embodiment, the positioning mechanism includes a U-shaped positioning block 7. The U-shaped positioning block 7 cooperates with the PCB board to position the PCB board.

[0028] In this embodiment, the depth of the groove 21 of the pad printing plate 2 is 0.1-1.0 mm. The depth of the groove 21 of the pad printing plate 2 can be reasonably selected according to the required thickness of the oil.

[0029] In this embodiment, the oil cup 3 has an oil filling port at the bottom thereof, and a control valve is provided at the oil filling port. The control valve is electrically connected to the control device 6, and the oil in the oil cup 3 can be injected into the groove 21 of the pad 2 through the oil filling port at the bottom of the oil cup 3 and the control valve.

[0030] In this embodiment, the oil cup driving mechanism includes a first driving mechanism (not shown in the figure) for driving the oil cup 3 to move forward and backward and a second driving mechanism (not shown in the figure) for driving the oil cup 3 to move up and down. The first driving mechanism can be driven by a motor and a lead screw, and the second driving mechanism can be driven by a cylinder. When oil filling is required, the first driving mechanism drives the oil cup 3 to move forward to above the groove 21 of the pad 2, and the second driving mechanism drives the oil cup 3 to move downward to fill the oil. After the oil filling is completed, the second driving mechanism drives the oil cup 3 to move upward, and then the first driving mechanism drives the oil cup 3 to move backward to the original position.

[0031] In this embodiment, the scraping mechanism includes a scraper 8 and a third driving mechanism (not shown) for driving the scraper 8 to move left and right. The third driving mechanism can be driven by a cylinder to drive the scraper 8 to scrape the pad printing oil in the groove 21 of the pad printing plate 2.

[0032] In this embodiment, the pad printing rubber head 4 is hemispherical and can be made of soft rubber material, and can absorb the pad printing oil in the groove 21 of the pad printing pad 2 and transfer it to the area to be oiled on the PCB board.

[0033] In this embodiment, the pad drive mechanism includes a fourth drive mechanism (not shown in the figure) for driving the pad printing pad 4 to move forward and backward and a fifth drive mechanism (not shown in the figure) for driving the pad printing pad 4 to move up and down. The fourth drive mechanism can be driven by a motor and a lead screw, and the fifth drive mechanism can be driven by a cylinder. When printing oil is required, the fifth drive mechanism drives the oil cup 3 to move downward to absorb the pad printing oil in the groove 21 of the pad printing pad 2, and then the fifth drive mechanism drives the oil cup 3 to move upward, and then the fourth drive mechanism drives the oil cup 3 to move forward to the top of the positioned PCB board, and the fifth drive mechanism drives the oil cup 3 to move downward to transfer the absorbed pad printing oil to the PCB board. After the pad printing is completed, the fifth drive mechanism drives the oil cup 3 to move upward, and then the fourth drive mechanism drives the oil cup 3 to move backward to the original position.

[0034] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the protection scope of the present invention.

Claims

1. A PCB contact surface oiling device, characterized in that: The invention comprises a conveying track for conveying PCB boards, a detection mechanism for detecting the raw materials of PCB boards, a positioning mechanism for positioning PCB boards and a pad printing mechanism for applying oil to the PCB boards. The pad printing mechanism comprises a pad printing plate with grooves engraved corresponding to the areas to be oiled on the PCB boards, an oil cup for containing pad printing oil, an oil cup driving mechanism for driving the oil cup to load the pad printing oil into the grooves of the pad printing plate, a scraping mechanism for scraping the pad printing oil in the grooves of the pad printing plate, a pad printing rubber head for absorbing the pad printing oil in the grooves of the pad printing plate and transferring it to the areas to be oiled on the PCB boards and a rubber head driving mechanism for driving the pad printing rubber head to move from the grooves of the pad printing plate to the areas to be oiled on the PCB boards.

2. A PCB contact surface oiling device according to claim 1, characterized in that: The detection mechanism is installed at the front end of the positioning mechanism, and the pad printing mechanism is arranged opposite to the positioning mechanism.

3. A PCB contact surface oiling device according to claim 1, characterized in that: The detection mechanism comprises an infrared sensor, and the infrared sensor is electrically connected to a control device.

4. A PCB contact surface oiling device according to claim 1, characterized in that: The positioning mechanism comprises a U-shaped positioning block.

5. The PCB contact surface oiling device according to claim 1, characterized in that: The groove depth of the pad printing plate is 0.1-1.0 mm.

6. The PCB contact surface oiling device according to claim 1, characterized in that: An oil filling port is provided at the bottom of the oil cup, and a control valve is provided at the oil filling port.

7. The PCB contact surface oiling device according to claim 1, characterized in that: The oil cup driving mechanism includes a first driving mechanism for driving the oil cup to move forward and backward and a second driving mechanism for driving the oil cup to move up and down.

8. The PCB contact surface oiling device according to claim 1, characterized in that: The scraping mechanism comprises a scraper and a third driving mechanism for driving the scraper to move left and right.

9. The PCB contact surface oiling device according to claim 1, characterized in that: The pad printing rubber head is hemispherical.

10. The PCB contact surface oiling device according to claim 1, characterized in that: The pad driving mechanism comprises a fourth driving mechanism for driving the pad printing pad to move forward and backward and a fifth driving mechanism for driving the pad printing pad to move up and down.

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