General operation guide and advanced operation skills for desktop dispensing machine
Publisher: Administrator Date: 2025-06-30
1、 General Operation Guide for Desktop Glue Dispensing Machine
1. Safety operation standards
Personal protection requirements
Protective gloves, goggles, and masks must be worn to prevent glue from coming into contact with the skin or splashing into the eyes
If glue comes into contact with the skin, immediately rinse with plenty of water for at least 15 minutes
When glue splashes into the eyes, it is necessary to rinse continuously and seek medical attention promptly
Equipment safety precautions
Ensure good grounding of equipment to prevent leakage risk
It is strictly prohibited to insert hands or other objects into the movement area during equipment operation
Unauthorized changes to equipment parameters or disassembly of key components are prohibited
The equipment should be placed in a stable, dry, and well ventilated environment, away from sources of fire
Environmental requirements
The work area should be kept clean to avoid debris affecting operations
Adhesive storage should be kept away from light and moisture, and the temperature should be controlled between 15-25 ℃
Ensure that the work area has a good exhaust system, especially when using volatile adhesives.
2. Equipment structure and functional cognition
Introduction to Core Components
Glue dispensing valve system:
Needle valve: suitable for low viscosity adhesives (such as UV glue)
Screw valve: specially designed for high viscosity adhesives (such as silicone)
Hot melt adhesive valve: used for hot melt adhesive dispensing, requiring a heating device
Glue supply system:
Rubber cylinder/bottle: capacity ranging from 30ml to 1L
Pressure bucket: used for supplying large capacity adhesive
Transportation pipeline: Regular inspection is required to prevent aging and cracking
Motion control system:
X/Y/Z three-axis guide rail: repeated positioning accuracy can reach ± 0.02mm
Servo motor: controls motion speed and acceleration
Limit switch: Ensure safe range of motion
interface:
Touch screen: used for parameter settings and program editing
Physical buttons: emergency stop, reset and other function keys
Status indicator light: displays the operating status of the device.
3. Standard operating procedures
Preparation before operation
Equipment inspection:
Check whether the connections of each component are firm
Confirm that the gas source pressure is within the range of 0.4-0.6MPa
Test whether the dispensing valve opens and closes smoothly
Material preparation:
Select the adhesive type that matches the product requirements
Prepare dispensing needles of appropriate specifications (commonly 18G-25G)
Prepare cleaning solvents (such as alcohol, acetone)
Parameter preset:
Set the air pressure and dispensing time based on the characteristics of the adhesive
Set dispensing path and motion speed
Enter the product size and dispensing position coordinates.
Glue dispensing operation steps
Startup:
Connect the power and wait for the system self-test to complete
Return to the mechanical origin to ensure the accuracy of the coordinate system
Program call:
Select the dispensing program for the corresponding product from the memory
Check if the program parameters meet the current requirements
Glue filling:
Put the glue into the glue cylinder to avoid mixing bubbles
Perform adhesive dispensing operation until the adhesive flows out stably
Trial operation:
Run the program without releasing the product
Observe whether the dispensing trajectory and dispensing volume are accurate
Formal production:
Place the workpiece to ensure accurate positioning
Start automatic dispensing cycle
Batch production will be carried out after the first article inspection is qualified.
4. Daily maintenance and troubleshooting
Routine maintenance projects
Daily maintenance:
Clean equipment surfaces and workbenches
Check for air leaks in the air circuit
Check if the glue needle is blocked
Weekly maintenance:
Lubricate the guide rail and transmission components
Check the tension of the belt
Calibrate the accuracy of the motion platform
Monthly maintenance:
Thoroughly inspect the electrical connections
Replace worn seals
Backup system parameters and programs.
Common troubleshooting
Uneven glue dispensing:
Possible reasons: clogged needle, glue bubbles, unstable air pressure
Solution: Replace the needle, vacuum defoam, check the pressure reducing valve
Glue dispensing position offset:
Possible reasons: mechanical vibration, program errors, inaccurate workpiece positioning
Solution: Strengthen equipment, inspect procedures, improve fixtures
Glue drawing:
Possible reasons: high adhesive viscosity, ineffective suction function, excessive needle size
Solution: Adjust the glue temperature, check the suction valve, and replace the small needle.
2、 Advanced operational skills
1. Complex trajectory programming method
Path planning principles
The continuous dispensing path should avoid sharp turns and maintain stable speed
For complex graphics, a segmented programming and recombination approach is adopted
Reduce the speed appropriately at corners to ensure even glue lines
Special function applications
3D dispensing:
Utilizing Z-axis height variation to achieve three-dimensional dispensing
Suitable for surfaces of workpieces with height differences
Spiral dispensing:
Realize spiral glue line through X/Y axis linkage
Commonly used in situations with high requirements for circular sealing
Dot matrix dispensing:
Programmed arrangement of dispensing positions
Suitable for applications that require dispersed bonding.
2. Process adjustment of different adhesives
Key points of UV glue dispensing
Store and use in the dark to prevent premature curing
UV curing is required immediately after dispensing
Suggest using black opaque rubber hose
Silicone processing techniques
High viscosity silicone requires the use of screw valves for dispensing
Properly increase the air pressure and dispensing time
Maintain a constant temperature and humidity in the working environment
Two component adhesive mixture
Strictly control the mixing ratio (such as 10:1 or 1:1)
After mixing, the dispensing must be completed within the applicable period
Regularly check whether the static mixing pipe is blocked.
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