Narrow Jetting Valve for Lens and UV Glue Precision Dispensing

Product Specification

Product Overview

This narrow jetting valve is designed for precise placement of UV curable adhesives and small-volume deposits in lens assembly and compact optical modules. It fits into tight tool heads and delivers repeatable dots and short lines with low variation. Use it when you must avoid overflow, control glue amount, and keep cycle times short.

Problem

In lens assembly and optical modules, excess glue or poor placement causes optical defects, extra polishing, or rework that reduce yield and increase cost.

Cause

Large valve bodies, inconsistent droplet control, or poor nozzle access make accurate glue placement difficult. UV glue needs precise dose and position; if the valve cannot form small stable drops in narrow spaces, glue spreads or bridges parts.

Solution

This narrow jetting valve combines a slim profile with controlled pulse ejection to place small droplets and short beads precisely. It reduces overflow and improves first-pass yield for lens bonding tasks.

Typical advantages:

• Accurate dots and short lines for lens edges and gaps
• Compact size to clear nearby parts and fit small fixtures
• Stable output with UV-curable adhesives after simple tuning
• Easier nozzle access for cleaning or replacement

 
Technical specifications

Application

• Lens assembly: accurate adhesive dots at lens edges and spacer joints.
• Camera modules: small glue spots for lens retainers and tiny housings.
• Optical sensors: precise sealing and bonding in tight layouts.
• Small optics R&D: trials of UV glue formulations with minimal material use.

How It Works 

Conclusion: small droplets are formed by short, fast pulses and a stable fluid feed. The valve uses a rapid actuator stroke to push a controlled amount of fluid through a narrow nozzle. Pulse width and amplitude set droplet size while steady inlet pressure keeps the fluid meniscus steady. For UV glues, keep light exposure controlled until after placement.

How To Choose

Conclusion: choose the valve based on droplet size, glue viscosity, and space constraints.

Steps:

1. Confirm target droplet or bead size and select a nozzle closest to that range.
2. Provide glue viscosity at your process temperature; request a sample test if viscosity is high.
3. Check required cycle rate and pick a valve rated for that frequency.
4. Match wetted material to glue chemistry (316L for general use; PTFE or ceramic if needed).
5. Verify mounting flange and clearance for your tool head to avoid collisions.
6. Plan a short tuning run to set pulse and pressure for best placement before full production.

FAQ 

Q1: Can this valve handle UV-curable adhesives reliably? 

A1: Yes. With proper wetted material choice and tuning, it handles common UV glues. We recommend a sample test for your specific glue.

Q2: What is the smallest dot I can expect in production?

A2: Typical stable dots start around 0.8 nL with the right nozzle and drive settings. Production tuning is necessary for consistent output.

Q3: How do I avoid premature curing during dispensing?

A3: Keep UV exposure off the work area until after placement, use UV-safe lighting, and limit stray light near the nozzle. We can advise on best practices.

Q4: How often should the nozzle be cleaned or changed?

A4: Cleaning frequency depends on glue solids and use. For clear UV glues, routine inspection and cleaning every shift or as needed is common; filled glues require more frequent attention.

Q5: Do you provide sample testing with our adhesive?

A5: Yes. Send your glue spec and process temperature and we can run a short trial and return results.

 
About Mingseal

Founded in 2008, Changzhou Mingseal Robot Technology Co., Ltd. is a technology-driven manufacturer of high-end equipment, specializing in connection, assembly, inspection systems, and key components for advanced semiconductor packaging and precision electronics. Our solutions are widely adopted by leading customers in sectors such as semiconductor packaging, consumer electronics, and automotive electronics. With a strong presence across Asia and the America, we deliver reliable support and innovation globally.

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