Automatic PCB screen printing machine is commonly used for solder mask, PCB legend/marking, and wet-film via plugging during PCB fabrication.
The machine places a bare PCB panel onto the printing table,
accurately aligns it with the screen, and uses a controlled squeegee printing system to transfer ink/material onto the PCB.
| Project | Specifications | Specifications |
|---|
| Substrate | 1 | Substrate thickness | 0.6–4.0 mm |
| 2 | Substrate range | Max. 650 × 750 mm |
| 3 | Min. 350 × 400 mm |
| Equipment Specifications | 4 | Dimensions | L3450 × W1675 × H1764 mm |
| 5 | Weight | 3500 kg |
| 6 | Maximum throughput | 6–8 sheets/min (subject to on-site process requirements) |
| 7 | Air supply pressure | 6–8 kg/cm² |
| 8 | Power supply | 380V, 3-phase 5-wire system |
| 9 | Power rating | 6 kW |
| Infeed mechanism | 10 | Infeed adjustment range | 350–650 mm |
| 11 | Initial positioning method | Automatic centering via ball screw mechanism |
| 12 | Infeed method | Belt conveyor |
| CCD Vision Alignment System | 13 | CCD field of view | 23 × 18 mm |
| 14 | Vision alignment accuracy | ±0.005 mm |
| 15 | Integration accuracy | ±0.02 mm |
| 16 | Lens working distance | 150 mm |
| 17 | Positioning time | Positioning completed in 0.8 sec (standard target) |
| 18 | CCD resolution | 16 μm |
| 19 | Light source | LED coaxial light source |
| 20 | Number of lenses | Two lenses |
| Central runner-track conveying mechanism | 21 | Worktable clamping method | One pair of clamps per table |
| 22 | Clamp adjustment range | 350–750 mm |
| 23 | Clamp adjustment method | Automatic positioning via ball screw |
| 24 | Stage drive mechanism | Linear motor |
| 25 | Stage reciprocating positioning accuracy | ±0.005 mm |
| 26 | Stage single-stroke travel time | 1.0 sec |
| Printing Facility | 27 | Printing drive method | Servo motor |
| 28 | Printing speed | 40 m/min |
| 29 | Printing direction | Rear-to-front |
| 30 | Maximum screen frame size | 1200 × 1200 mm |
| 31 | Maximum printing stroke | 0–960 mm |
| 32 | Squeegee drive method | FESTO pneumatic cylinder + proportional valve |
| 33 | Screen lift method | Servo motor + ball screw |
| 34 | Screen lift distance | 0–30 mm |
| 35 | Screen frame micro-adjustment direction | Manual 2-axis fine adjustment |
| 36 | Screen frame micro-adjustment distance | 0–10 mm |
| 37 | Squeegee tilt angle | 0–10° |
| 38 | Squeegee attack angle | 0–45° |
| 39 | Printing table clamping | Lead screw positioning, automatic clamping |
| 40 | Printing table dimensions | 1010 × 900 mm |
| 41 | Lifting guide mechanism | 4-axis synchronous lifting |
| 42 | Screen lifting method | Servo motor |
| Lifting Mechanism | 43 | Parallelism between screen frame and printing table | ±0.02 mm |
| 44 | Screen lifting height | 350 mm |
| 45 | Screen descent repeatability | ±0.02 mm |
| 46 | Printing control system | Industrial PC + high-speed control card |
| 47 | Parameter memory module | 3000 sets |
| Control System | 48 | Automated memory control items | 1. One-key positioning for all clamps, conveyors, and edge guides |
| 49 | 2. Screen lift height |
| 50 | 3. Screen-to-substrate gap |
| 51 | 4. Printing stroke |
| 52 | 5. Printing speed |
| 53 | 6. Squeegee pressure |
| 54 | 7. Job/part number editing, production statistics, etc. |
Advantages
1. High Printing Consistency
Automated motion and controlled printing parameters help maintain
consistency between PCB panels.
2. Reduced Labor Requirements
Automatic handling and printing reduce repetitive manual
operations.
3. Suitable for Mass Production
Automatic PCB screen printers are designed for continuous
production and can be integrated into automated manufacturing
lines.
4. Improved Registration
Where equipped with CCD/vision registration, the system can detect
PCB reference marks and automatically compensate positioning
errors. Industrial PCB screen printers use this approach for
precise registration.
5. Uniform Ink Application
Controlled squeegee pressure, speed and printing parameters help
achieve a more stable printed layer.
6. Flexible PCB Applications
Depending on the configuration, the same equipment platform can be
adapted for solder mask, legend, plug-via and other PCB
screen-printing processes.
7. Easy Process Control
Digital parameter control makes it easier to repeat established
printing recipes.
8. Production-Line Compatibility
Can be combined with PCB dryers, loaders, unloaders, buffers and
other PCB fabrication equipment.
9. Lower Human Error
Automated positioning and printing reduce variation caused by
manual operation.
10. Suitable for Different PCB Types
Potential applications include rigid single-sided, double-sided and
multilayer PCB panels, subject to the machine's actual
specifications.
Applications
A. PCB Solder Mask Printing
The primary application if this machine is configured as a
solder-mask printer.
Solder mask covers/protects selected PCB surfaces while leaving
required soldering areas exposed.
B. PCB Legend / Silkscreen Printing
Used to print:
- Component reference numbers
- Polarity symbols
- Logos
- Product identification
- Assembly markings
- Warning symbols
Automatic CCD-registration screen printers are specifically used
for PCB legend printing.
C. PCB Via Plugging
If equipped with the appropriate printing system and ink
configuration, it can be used for via plugging, filling PCB vias with solder mask or epoxy-based materials.
D. PCB Fabrication
Suitable for integration into:
- Bare PCB manufacturing lines
- Multilayer PCB production
- Double-sided PCB production
- PCB solder-mask production
- PCB surface finishing processes
E. Electronics PCB Manufacturing
Potential end-use sectors include:
- Consumer electronics
- Automotive electronics
- Industrial electronics
- Communication equipment
- Computer hardware
- Power electronics
- LED electronics
- Medical electronics
- Telecommunications
- High-performance computing
