Working Principle Of Dispensing Machine

1. Working principle: Compressed air is fed into the rubber bottle (syringe) to press the glue into the feed pipe connected to the piston chamber. When the piston is on the up stroke, the piston chamber is filled with glue. When the piston pushes down on the dripping needle, the glue is pressed out from the needle tip. The amount of glue that drips out is determined by the distance of the piston's downward stroke, which can be manually adjusted or automatically controlled in the software.
2. Features: High speed, low sensitivity to adhesive viscosity.
3. Advantages: It can increase the dispensing speed, improve the dispensing environment, and improve the dispensing quality.
Drip pump
1. Working principle: Compressed air is fed into the rubber bottle (syringe), and the glue is pressed into the feed pipe. The glue flows through a screw that rotates at a fixed time and a specific speed. The rotation of the screw creates a shear force on the adhesive, causing the adhesive to flow down the thread. The rotation of the screw continuously pressurizes the adhesive, causing it to flow out of the dripping needle.
2. Features: Flexibility with no fixed limit on the diameter of the adhesive dots. Adjustments can be made through software. However, when there is a large drop of glue, the long rotation time of the screw will reduce the output of the entire machine. In addition, the viscosity and flow characteristics of the adhesive can affect its stability.
Contactless drip pump
1. Working principle: Compressed air is fed into the rubber bottle (syringe) to press the rubber into the feed tube connected to the piston chamber, where it is heated and the temperature is controlled to achieve the best consistent viscosity. Using a ball socket structure, the adhesive fills the gap left by the ball retracting from the socket. When the ball returns, the force generated by acceleration interrupts the flow of adhesive, causing it to spray out of the glue needle and drip onto the board to form a glue dot effect.
2. Features:
(1) Eliminates the glue tail caused by traditional methods.
(2) There is no issue of wear or interference with other parts of the adhesive needle.
(3) No needle tip damage.
(4) No scrapping due to bending of the substrate and damage by the needle tip.
The executing mechanism of the dispensing machine is mainly responsible for executing dispensing operations, and the driving mechanism can help the executing mechanism achieve more precise and high-quality dispensing, which of course also depends on a scientific and reasonable control system.
The actuator consists of two parts: a robotic arm and a torso. The robotic arm operates in a straight line during the operation process. In order to cooperate with the operation of the robotic arm, actuators such as linear hydraulic cylinders, swinging hydraulic cylinders, electro-hydraulic pulse motors, servo hydraulic motors, AC servo motors, DC servo motors, and stepper motors are generally selected. The trunk of the dispensing machine is the main part of the dispensing machine, including the installation of arms, power sources, and various actuator brackets, all of which belong to the category of the trunk of the dispensing machine.
Next, we will talk about the second major component of the dispensing machine: the driving device. There are four main types of driving mechanisms: hydraulic drive, pneumatic drive, electrical drive, and mechanical drive. Among them, only electrical and pneumatic drives account for 90% of the total application due to their relatively small amount of glue, convenient air supply, simple and convenient maintenance, and relatively low cost advantages.
Control the system now. In order to ensure simple and precise dispensing operation, high speed and precision. The control system of the dispensing machine is equipped with a motion control card, offline conversion board, handheld teaching box, serial port cable, interface cable, software dog, offline liquid product, offline keyboard, and thin code switch dispensing program. The advantage of this assembly is that files are easy to download and data management is convenient.
After understanding the composition of the dispensing machine, it is also important to understand the working principle of the dispensing machine. The dispensing machine sends compressed air into a syringe or rubber bottle, presses the glue into the feed pipe connected to the piston chamber, and uses pressure for dispensing operations. When the piston is on the upstroke, the piston chamber will be filled with glue; When the piston pushes down on the dripping needle, the glue will be pressed out of the needle under pressure. The amount of glue that drips out is determined by the distance the piston descends, and can be manually adjusted or controlled through programming.
The dispensing machine is a significant transformation from manual to automated. It includes the writing of mechanical, electrical, and PLC programs. It well illustrates the extraordinary application of mechatronics technology. It is the best embodiment of mechatronics integration towards intelligence, modularity, and greenery.