Automatic Four Head Onion Skin Tube Filling & Sealing Machine
High-Efficiency Packaging for Biological Indicators
The Harsiddh Automatic Four Head Onion Skin Tube Filling & Sealing Machine (Model HFS-4 OST) is a high-speed solution designed for the specialized packaging of crushable glass ampoules and biological indicators. This machine integrates four independent heads to deliver a massive leap in productivity, handling volumes from 0.5ml to 10ml with superior volumetric accuracy of ±1%.
Operational Precision & High-Volume Workflow
Operating on the proven volumetric piston pump principle, the HFS-4 OST is optimized for industrial-scale manufacturing in the pharmaceutical, veterinary, and agro-chemical sectors.
Sequence of Operation:
- Rectangular Feeding: Sterilized tubes are indexed via a synchronized star wheel to prevent breakage.
- Nitrogen Flushing: Pre-filling nitrogen gassing clears the container environment.
- Four-Head Filling: Quad precision heads dispense liquid doses simultaneously with consistent accuracy.
- Heating & Sealing: After post-filling gassing, the tubes pass through a pre-warming station and are hermetically sealed using an LPG/Oxygen mixture.
- Automated Discharge: Sealed products are diverted into a collection tray, while glass waste is captured in an integrated collector.
Technical Specification
| Specification | Details (Model: HFS-4 OST) |
|---|---|
| Number of Heads | Four (Filling & Sealing) |
| Compatible Glassware | OST / Crushable Ampoules / Biological Indicators |
| Tube Size Range | Dia. 6mm to 15mm | Length 55mm to 100mm |
| Production Output | 60 to 100 Tubes / Minute |
| Filling Capacity | 0.5ml to 10ml (Single Dose) |
| Filling Accuracy | +/- 1% |
| Gases Required | LPG & Oxygen (for Sealing) |
| Power Requirements | 1.0 H.P., 3-Phase or 1-Phase Options |
| Net Weight | Approx. 285 Kgs |
Frequently Asked Questions
How does the machine handle such fragile glass without breakage?
Since onion skin tubes are prone to cracking under minimal pressure, the Harsiddh Four Head machine utilizes a Synchronized Walking Beam Transport System with custom-contoured grippers made of medical-grade engineering plastics. This "soft-touch" transport mechanism ensures that the tubes are moved through the filling and sealing stations with virtually zero mechanical stress, drastically reducing rejection rates.
What is the production capacity of the Four Head model?
The Four Head configuration is designed for medium-to-high speed production. Depending on the tube diameter (typically 5mm to 10mm) and the volume of the liquid, this machine can achieve a consistent output of 70 to 100 tubes per minute. It provides a significant upgrade in speed and sealing uniformity compared to manual or semi-automatic methods.
How does the machine ensure accurate liquid dosing for small volumes?
Precision is critical for diagnostic reagents. The machine is equipped with four high-precision SS 316L volumetric syringes or valveless ceramic pistons, capable of micro-dosing with an accuracy of ±1%. It also features a "No Tube – No Fill" sensor, which prevents the loss of expensive chemical reagents if a tube is missing from the transport rack.
What type of sealing technology is used for these thin-walled tubes?
The machine uses a precision Oxygen-LPG Flame Sealing system. After the filling process, the upper part of the onion skin tube is heated by specialized burners. Because the glass is so thin, the flame intensity and exposure time are finely controlled via the PLC interface to create a perfect "tip seal" or "dome seal" without charring the glass or overheating the chemical contents inside.
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