阅读说明：本技术 一种pcba超声波清洗系统及其清洗方法 (PCBA ultrasonic cleaning system and cleaning method thereof ) 是由 杨毅 于 2019-11-08 设计创作，主要内容包括：本发明公开了一种PCBA超声波清洗系统,包括超声波引导清洗装置、智能设备和3D图像采集装置。超声波引导清洗装置和智能设备通过通信连接,3D图像采集装置和智能设备通过通信连接；智能设备内置有存储器和处理器,智能设备内的存储器上存有自动清洗程序,自动清洗程序通过智能设备内的处理器运行。本发明采用计算机视觉引导机械臂上面的超声波探头采用非接触式的方式来定点清洗PCBA上面的污点,不需要产品接触液体清洗剂,避免了二次污染的问题；本发明在清洗过程中不需要对整个产品进行清洗,只需要针对污染位置进行局部清洗,效率高。(The invention discloses a PCBA ultrasonic cleaning system, which comprises an ultrasonic guiding cleaning device, intelligent equipment and a 3D image acquisition device. The ultrasonic guiding and cleaning device is in communication connection with the intelligent equipment, and the 3D image acquisition device is in communication connection with the intelligent equipment; the intelligent device is internally provided with a memory and a processor, the memory in the intelligent device is provided with an automatic cleaning program, and the automatic cleaning program runs through the processor in the intelligent device. The invention adopts the computer vision to guide the ultrasonic probe on the mechanical arm to clean the stain on the PCBA at fixed points in a non-contact way, and the product does not need to contact the liquid cleaning agent, thereby avoiding the problem of secondary pollution; the invention does not need to clean the whole product in the cleaning process, only needs to locally clean the polluted position and has high efficiency.)

1. A PCBA ultrasonic cleaning system is characterized by comprising an ultrasonic guiding cleaning device (1), intelligent equipment (2) and a 3D image acquisition device (3);

the ultrasonic guiding and cleaning device (1) is in communication connection with the intelligent equipment (2), and the 3D image acquisition device (3) is in communication connection with the intelligent equipment (2);

the intelligent device (2) is internally provided with a memory and a processor, the memory in the intelligent device (2) is provided with an automatic cleaning program, and the automatic cleaning program runs through the processor in the intelligent device (2).

2. A PCBA ultrasonic cleaning system as claimed in claim 1,

the ultrasonic guiding and cleaning device (1) comprises an ultrasonic guiding device (11) and an ultrasonic cleaning head (12), wherein the ultrasonic cleaning head (12) is installed on the ultrasonic guiding device (11), and the ultrasonic guiding device (11) is in communication connection with the intelligent equipment (2).

3. A PCBA ultrasonic cleaning system as claimed in claim 2,

the ultrasonic cleaning head (12) comprises an ultrasonic generator (121) and a beam forming head (122), the ultrasonic generator (121) is installed on the ultrasonic guiding device (11), the ultrasonic generator (121) is in communication connection with the intelligent device (2), and the beam forming head (122) is in circuit connection with the ultrasonic generator (121).

4. A PCBA ultrasonic cleaning system as claimed in claim 3,

the ultrasonic guiding device (11) is a six-axis mechanical arm, and the six-axis mechanical arm is in communication connection with the intelligent equipment (2); the ultrasonic generator (121) is mounted on the wrist of the six-axis robot arm.

5. A PCBA ultrasonic cleaning system according to claim 4, characterised in that the 3D image capture device (3) is one or more 3D cameras.

6. The PCBA ultrasonic cleaning system according to claim 5, wherein a plurality of 3D cameras constitute a 3D camera array.

7. The PCBA ultrasonic cleaning system according to claim 6, wherein a learning module is further arranged in the intelligent device (2), and the learning module at least comprises a characteristic information identification unit, a characteristic information classification unit and a cleaning learning unit which are related to the PCBA; the characteristic information identification unit identifies characteristic information of the PCBA, the characteristic information classification unit classifies the identified characteristic information of the PCBA, the cleaning learning unit calls the classified cleaning characteristic information to learn and correct, and the optimized cleaning execution script replaces an original cleaning execution script.

8. A method of cleaning a PCBA ultrasonic cleaning system as claimed in claim 6 or claim 7, the method including the steps of:

s1, presetting PCBA image parameters in the intelligent equipment (2);

s2, positioning and identifying the PCBA to be cleaned through the 3D image acquisition device (3) to obtain the characteristic information of the PCBA to be cleaned;

s3, the intelligent equipment (2) compares the identified PCBA image with a preset PCBA image, finds out stains needing to be cleaned, and generates a corresponding control instruction packet;

and S4, controlling the cleaning work of the PCBA to be cleaned according to the control instruction packet.

9. A method of cleaning a PCBA ultrasonic cleaning system as claimed in claim 8,

in the step S4, the cleaning operation of the PCBA to be cleaned is controlled according to the control instruction packet, including:

s4-1, under the control of a control instruction packet, the intelligent equipment (2) and the 3D image acquisition device (3) cooperate to guide the six-axis mechanical arm to move, and the ultrasonic cleaning head (12) on the six-axis mechanical arm is ensured to be close to a stain to be cleaned and keep an effective distance;

s4-2, the intelligent device (2) controls the ultrasonic generator (121) to emit ultrasonic waves, and the beam forming head (122) is used for concentrating energy to clean the PCBA;

s4-3, the intelligent device (2) controls the power and the duration of the ultrasonic waves according to the identified stain type and the size on the PCBA;

s4-4, the 3D image acquisition device (3) captures the PCBA image in real time to judge whether the cleaning is finished.

10. A method of cleaning a PCBA ultrasonic cleaning system as claimed in claim 9,

after the step S4 is to control the cleaning operation of the PCBA to be cleaned according to the control command packet, the cleaning method further includes:

s5, recording the cleaning characteristic information of the PCBA cleaning work, and storing the cleaning characteristic information of the PCBA;

s6, calling the cleaning characteristic information of the PCBA to perform cleaning learning;

s7, optimizing and cleaning the control instruction packet of the corresponding PCBA according to the cleaning learning result;

and S8, replacing the optimized PCBA control instruction packet with the corresponding PCBA initial cleaning control instruction packet.

Technical Field

The invention belongs to the field of PCBA processing, relates to an automatic PCBA cleaning system, and particularly relates to an ultrasonic cleaning system and a cleaning method for PCBA welding spots.

Background

PCBA is short for Printed Circuit Board + Assembly, means PCB blank Board is through SMT upper part, pass through the whole process of DIP plug-in components, namely assemble various electronic devices on PCB blank Board through the surface packaging technology.

In the PCBA processing process, residual substances can be generated by the solder paste and the soldering flux, potential safety hazards can exist on PCBA boards by the residual substances, short-circuit faults are easy to cause, and in addition, the requirement of customers on product cleanliness is not met. Therefore, it is very necessary to clean the PCBA.

Currently, ultrasonic cleaning is commonly used in the industry to clean PCBA boards, but such methods have the following major disadvantages:

A) requiring the PCBA to contact water or cleaning fluids presents the potential for secondary contamination of the product.

B) The cleaning process is directed to the entire product, causing unnecessary time waste.

C) Needs manual work to participate in the cleaning process, increases the cost and has high effect control difficulty.

Disclosure of Invention

In order to solve the problems, the invention provides an ultrasonic cleaning system and a cleaning method of PCBA, and the technical scheme is as follows:

the utility model provides a PCBA ultrasonic cleaning system, includes ultrasonic wave guide belt cleaning device, smart machine and 3D image acquisition device. Ultrasonic wave guide belt cleaning device and smart machine pass through communication connection, and 3D image acquisition device and smart machine pass through communication connection.

The intelligent device is internally provided with a memory and a processor, the memory in the intelligent device is provided with an automatic cleaning program, and the automatic cleaning program runs through the processor in the intelligent device.

Ultrasonic wave guide belt cleaning device includes ultrasonic wave guiding device and ultrasonic cleaning head, and ultrasonic cleaning head installs on ultrasonic wave guiding device, ultrasonic wave guiding device and smart machine communication connection.

The ultrasonic cleaning head comprises an ultrasonic generator and a beam forming head, the ultrasonic generator is arranged on the ultrasonic guiding device and is in communication connection with the intelligent equipment, and the beam forming head is in circuit connection with the ultrasonic generator.

The ultrasonic guiding device is a six-axis mechanical arm, and the six-axis mechanical arm is in communication connection with the intelligent equipment; the ultrasonic generator is arranged at the wrist part of the six-axis mechanical arm.

The 3D image acquisition device is one or more 3D cameras; when the 3D image acquisition device is a plurality of 3D cameras, the plurality of 3D cameras form a 3D camera array.

The intelligent device is also internally provided with a learning module, and the learning module at least comprises a characteristic information identification unit, a characteristic information classification unit and a cleaning learning unit which are related to the PCBA; the characteristic information identification unit identifies characteristic information of the PCBA, the characteristic information classification unit classifies the identified characteristic information of the PCBA, the cleaning learning unit calls the classified cleaning characteristic information to learn and correct, and the optimized cleaning execution script replaces an original cleaning execution script.

The cleaning method of the PCBA ultrasonic cleaning system comprises the following steps:

s1, presetting PCBA image parameters in the intelligent equipment;

s2, positioning and identifying the PCBA to be cleaned through the 3D image acquisition device, and acquiring the characteristic information of the PCBA to be cleaned;

s3, the intelligent equipment compares the identified PCBA image with a preset PCBA image, finds out stains needing to be cleaned, and generates a corresponding control instruction packet;

and S4, controlling the cleaning work of the PCBA to be cleaned according to the control instruction packet.

In step S4, the cleaning operation of the PCBA to be cleaned is controlled according to the control command packet, which includes:

s4-1, under the control of a control instruction packet, the intelligent equipment and the 3D image acquisition device cooperate to guide the six-axis mechanical arm to move, so that an ultrasonic cleaning head on the six-axis mechanical arm is ensured to be close to a stain to be cleaned and an effective distance is kept;

s4-2, the intelligent equipment controls the ultrasonic generator to emit ultrasonic waves, and the beam forming head is utilized to concentrate energy so as to clean the PCBA;

s4-3, the intelligent equipment controls the power and the duration of the ultrasonic waves according to the identified stain type and the size on the PCBA;

and S4-4, capturing the PCBA image in real time through the 3D image acquisition device to judge whether the cleaning is finished.

After the step S4 is executed to control the cleaning operation of the PCBA to be cleaned according to the control command packet, the cleaning method further includes:

s5, recording the cleaning characteristic information of the PCBA cleaning work, and storing the cleaning characteristic information of the PCBA;

s6, calling the cleaning characteristic information of the PCBA to perform cleaning learning;

s7, optimizing and cleaning the control instruction packet of the corresponding PCBA according to the cleaning learning result;

and S8, replacing the optimized PCBA control instruction packet with the corresponding PCBA initial cleaning control instruction packet.

The invention has the beneficial effects that: 1) the invention adopts the computer vision to guide the ultrasonic probe on the mechanical arm to clean the stain on the PCBA at fixed points in a non-contact way, and the product does not need to contact the liquid cleaning agent, thereby avoiding the problem of secondary pollution;

2) the whole product is not required to be cleaned in the cleaning process, only partial cleaning is required to be carried out on the polluted position, and the efficiency is high;

3) the automatic cleaning machine disclosed by the invention is operated automatically in the cleaning process, manual intervention is not required, the cleaning time is saved, the labor cost is reduced, and the cleaning effect is ensured.

Drawings

FIG. 1 is a schematic view of the structure of example 2 of the present invention;

reference numerals: the ultrasonic guided cleaning device comprises an ultrasonic guided cleaning device 1, intelligent equipment 2 and a 3D image acquisition device 3; an ultrasonic guide device 11, an ultrasonic cleaning head 12; an ultrasonic generator 121 and a beam forming head 122.

Detailed Description