In the precision PCB depaneling process, the stability of the fixturing method directly determines the cutting quality. Based on 32 years of experience in router depaneling applications, Seprays/Genitec has independently optimized the vacuum hold-down structure and control logic, ensuring the suction force consistently operates within the range most suitable for cutting—rather than blindly pursuing extreme negative pressure.
I. Seprays/Genitec’s Understanding of “Appropriate Suction Force”
We believe the vacuum hold-down force for a router depaneling machine should meet three core principles:
Hold Firm: No displacement or warping of the PCB during high-speed cutting.
Hold Flat: Avoid local depression, which introduces additional board stress.
Hold Stable: Maintain consistent negative pressure during prolonged continuous operation.
Therefore, Seprays/Genitec router depaneling machines maintain the working vacuum negative pressure within:
–70 kPa to –85 kPa (Optimal Engineering Range)
This range covers the vast majority of application scenarios, including FR4, multi-layer boards, and thin laminates.
II. Why Seprays/Genitec Does Not Blindly Pursue Higher Negative Pressure
In actual production, excessively high vacuum negative pressure does not improve depaneling results. Instead, it may lead to:
Local deformation of the PCB, increasing cutting stress.
Potential risks to solder joints and BGA areas.
Increased burrs at cut edges and reduced tool life.
Through extensive process validation, Seprays/Genitec has found that stable, uniform, and controllable hold-down is more important than simply “holding very tightly.”
III. Core Advantages of the Seprays/Genitec Vacuum Hold-down System
1️⃣ Stable Negative Pressure Control
Industrial-grade vacuum pump configuration.
Negative pressure fluctuation during continuous operation ≤ ±3 kPa.
Suitable for 24/7 inline production.
2️⃣ High-Coverage Hold-down Platform Design
Multi-hole array suction structure.
Suction zones positioned close to the cutting path.
Effective suction area covers 60–80% of the PCB, ensuring uniform force distribution and no shifting during cutting.
3️⃣ Precise Matching Between Vacuum System and Cutting Force
During the equipment design phase, Seprays/Genitec systematically matches:
Spindle speed
Cutter diameter
Feed rate
with the vacuum hold-down capability to achieve dynamic balance between cutting force and holding force.
IV. Typical Application Scenarios
Multi-panel and breakaway tab depaneling.
Precision cutting of thin and small-sized PCBs.
Electronics with high requirements for stress management and cut-edge quality.
In these applications, Seprays/Genitec router depaneling machines deliver stable, highly consistent results without introducing additional stress.
V. Common Customer Questions (Seprays/Genitec Standard Responses)
Q: What is the vacuum hold-down force of your equipment?
A: Seprays/Genitec router depaneling machines employ a stable vacuum hold-down system, with working negative pressure controlled within the optimal engineering range of –70 to –85 kPa. This ensures secure PCB fixation without introducing extra stress from excessive suction, making it particularly suitable for high-precision depaneling of thin and multi-layer boards.
VI. Seprays/Genitec Technical Philosophy Summary
Vacuum hold-down is not about “who can suck harder,” but rather “who can hold more steadily.”
Through rational negative pressure range design and high-coverage suction structure, Seprays/Genitec provides truly reliable foundational support for router depaneling.
Seprays/Genitec｜32 Years Dedicated to PCB Depaneling Technology, Pursuing Stability, Precision, and Long-term Reliability.
