Step-by-Step Guide to Operating a Glue Dispensing Machine

Step-by-Step Guide to Operating a Glue Dispensing Machine

1. Pre-operation preparation: Equipment and material inspection
1.1 Equipment appearance inspection
Ensure that all components of the glue dispensing machine (such as the three-axis platform, glue gun, and control panel) are secure and undamaged, and that all cables are firmly connected.
Check the pressure gauge reading (typically stable at 0.4–0.6 MPa) and ensure there are no leaks in the air supply lines.

1.2Adhesive and Consumables Preparation
Select the appropriate adhesive (e.g., single-component/two-component adhesive) based on process requirements, and confirm that viscosity and curing conditions meet specifications.
Install suitable nozzles (e.g., stainless steel nozzles for standard adhesives, PTFE nozzles for corrosive adhesives), and verify that nozzle orifice size matches dispensing volume (smaller orifice size results in smaller adhesive dots).

1.3 Parameter presetting
Enter the basic parameters on the control panel: dispensing pressure, dispensing time, movement speed, and dispensing path (e.g., dot/line/circle).
For two-component adhesives, pre-set the mixing ratio of A and B components (e.g., 1:1, 10:1) and confirm that the mixing tubes are installed correctly.

2. Equipment commissioning: Calibration and test dispensing

2.1 Coordinate system calibration
Manually move the three-axis platform to position the nozzle at the workpiece reference point (e.g., the top-left corner) and set it as the origin of the coordinate system.
Enable the visual positioning function (if equipped with a CCD camera), capture the workpiece image, and mark the dispensing positions to ensure the software coordinates align with the actual positions.

2.2 Test Dotting Test
Perform test dotting on scrap parts and observe the adhesive dot morphology:
If the dot is too large or shows stringing: reduce air pressure or shorten dispensing time;
If the dot is too small or no adhesive is dispensed: increase air pressure or check if the needle is blocked (use a cleaning needle to clear it).
Test the consistency of repeated dotting and adjust parameters until the dot size and position deviation are ≤0.1mm.

3. Formal Production: Automated Operation Process

3.1 Loading and Positioning
Place the workpiece manually or via an automatic loading mechanism to ensure it is securely fixed to the fixture and prevent displacement (especially during high-speed dispensing).
Activate visual recognition (if available), and the software will automatically detect the workpiece position and adjust the dispensing path.

3.2 Start dispensing program
Select the pre-set dispensing program (e.g., “PCB board solder dispensing”) on the control panel, confirm the parameters are correct, then click “Start.”
The equipment moves along the set path while controlling dispensing based on parameters: Pneumatic dispensing machine: Dispenses adhesive by pushing the adhesive cartridge with air pressure;
Screw-type dispensing machine: Precisely controls adhesive volume via screw rotation;

3.3 Process monitoring
Observe the dispensing status: check if the glue line is continuous and the glue dots are uniform. If glue breaks or leaks occur, stop the equipment immediately.
For two-component adhesives, pay attention to the usage time of the mixing tube (typically replace every 4-8 hours to prevent adhesive curing and blockage).

4. Error handling: Common problems and solutions

5. Operation Completion: Equipment Maintenance and Cleaning