
1. Brief Introduction
This automatic assembly machine is specially designed for cosmetic serum dropper assembly. It automatically completes feeding, positioning, precise pressing and finished product discharging for rubber/silicone bulb + glass/plastic dropper.
Widely applied in essence bottles, essential oil bottles, skincare liquid bottles and cosmetic packaging industry.
2. Working Process

Automatic feeding of rubber bulb → Automatic feeding & positioning of dropper → Precise alignment → Servo constant pressure pressing → Air tightness inspection (optional) → Defective parts rejection → Finished product collection
3. Applicable Range
- Parts: Silicone / rubber bulb, glass dropper, plastic PP dropper
- Caliber: 18/20/24 thread standard size, support non-standard customization
- Feature: No cracking, no loose connection, good air tightness after assembly
4. Machine Type & Capacity
Full Automatic Rotary Type

- Capacity: 2200–3000 pcs/h
- Replace 5–7 workers
- Fast mold change, compatible with multiple sizes
- No damage to glass dropper and rubber bulb
Semi-Automatic Type
- Capacity: 500–800 pcs/h
- Manual loading, machine pressing
- Suitable for small batch and sample production
5. Core Advantages

- Flexible feeding design, avoid scratch and glass edge chipping
- Servo precise pressure control, stable pressing without falling off
- Optional air tightness testing to ensure no leakage
- PLC & touch screen control, parameter preset and one-key recall
- Stainless steel frame, meet cosmetic dust-free workshop standard
6. Main Technical Parameters
- Positioning accuracy: ±0.02mm
- Air pressure: 0.4–0.6MPa
- Power supply: 220V / 380V
- Qualified rate: ≥99.2%
- Suitable dropper diameter: 3–12mm
7. Why Choose Us
As a trusted AutomaticAssemblyMachine provider and AssemblyMachineManufacturer, we focus on high-precision, damage-free assembly for cosmetic droppers. Our machines are widely recognized by global clients for stable performance and long service life. Whether you need a AssemblyMachineSourceManufacturer for bulk orders or a reliable AssemblyMachineSupplier for customized solutions, we are your ideal partner. With our AssemblyMachineManufacturer expertise, every detail—from feeding to pressing—is optimized for zero-defect output.
📞 Tel/Whatsapp: +86 15860091967
📧 Email:644349350@qq.com
🌐 Web:https://www.rzautoassembly.com
We offer OEM/ODM, free technical consultation, and on-site training. Send your drawings or samples for a fast quote!
