Wire Bond Encapsulation Dispenser — ±0.05 mm Placement Accuracy

Product Overview

This electronic dispensing machine is designed for accurate application of encapsulants and protective adhesives in wire bonding and micro‑assembly. With a controlled pressure range of 5.0~7.0kg/cm² the unit produces consistent bead shape and coverage for gold wire encapsulation, preventing wire movement and improving yield. The system supports syringe and valve heads, mounts to robot end effectors, and offers easy access for cleaning and nozzle change.

Problem 

Encapsulation failures and wire pull or shift occur when adhesive placement is uneven or pressure control is poor, leading to rework and reduced yield.

Cause 

Inconsistent pressure or irregular feed causes beads to overflow, miss the target area, or leave gaps. Inadequate control during short cycle times makes small assemblies especially vulnerable to variation.

Solution 

This machine provides stable pressure control within the 5.0~7.0 kg/cm² window and precise motion control to place the right amount of material every cycle. The short fluid path and recommended nozzle options reduce stringing and improve surface finish, while recipe storage and repeatable motion make transfer from setup to production fast and reliable.

Key Specifications

Application

• Gold wire encapsulation in IC and sensor modules.
• Wire bond protection on PCBA and small modules.
• Local sealing and small bead application around connectors and leads.
• Pilot and production lines requiring stable pressure control and repeatable deposits.

How It Works 

The system keeps material under controlled pressure and uses a timed dispense or motion‑synchronized pulse to place the deposit. The controller sets pressure in the 5.0~7.0 kg/cm² range and coordinates head movement so each bead sits correctly around wire bonds. A short fluid path and suitable nozzle reduce material residence time and lower stringing risk.

How To Choose

1. Confirm your desired deposit size, part footprint and available stroke to ensure full coverage without re‑indexing.
2. Provide adhesive type and viscosity at working temperature; we will recommend syringe/valve head and nozzle diameter.
3. State required cycle time and throughput so motion and pressure profiles can be matched.
4. Share robot/fixture mounting details for a smooth mechanical and electrical integration.
5. Request a bench trial with sample parts to finalize pressure, pulse and nozzle settings.
    

FAQ

Q1: Why is the 5.0~7.0 kg/cm² pressure range important?
A1: That pressure window gives stable extrusion for common encapsulants used in wire bonding, balancing flow with control to avoid overrun or voids.

Q2: What nozzle should I use for gold wire encapsulation?
A2: Use a fine nozzle matched to your wire geometry and deposit size; provide part photos and desired bead width and we will recommend a nozzle size.

Q3: Can this machine run on a robot arm?
A3: Yes. It has a compact mounting flange and standard electrical interface; provide robot flange and control details to confirm compatibility.

Q4: How often does the head need cleaning?
A4: Cleaning frequency depends on material and duty cycle. The unit is designed for quick nozzle swap and simple purge routines to minimize downtime.

Q5: Do you offer sample testing?
A5: Yes. Send adhesive data and sample parts; we run a bench test and return a report with recommended pressure, nozzle and motion settings.