Servo Two-head Pump Filling & Capping Machine for Liquid Pharmaceutical Production

The machine operates on a continuous intermittent rotary conveying system, completing all processing steps in a fully automated cycle without frequent manual intervention.

Bottle Conveying & Positioning
Empty bottles are fed into the equipment via a matched bottle feeding conveyor. Photoelectric sensors detect incoming bottles; the system pauses all filling and capping actions when no bottle is detected, or automatically halts operation if bottle jamming occurs, eliminating waste of liquid materials.

Servo Precision Filling Station
Two sets of 316L stainless steel servo piston metering pumps serve as the filling core. Controlled by servo motors, the filling volume can be directly adjusted on the touchscreen interface with high flexibility for different product dosages. The submersible lifting filling design prevents dripping, foaming and liquid overflow at bottle mouths, delivering a filling accuracy of ±1%. All liquid-contact components adopt quick-release structures, allowing bare-hand disassembly for convenient cleaning and sterilization to meet hygienic production standards.

Electromagnetic Cap Sorting Unit
Caps are placed into the vibration hopper. Electromagnetic oscillation arranges disordered caps into uniform downward orientation, then transports caps through dedicated tracks to the capping station above bottles automatically.

Constant-torque Capping Station
A cam-driven lifting mechanism controls the up-and-down movement of capping heads, while synchronous pulley motors drive high-speed screw rotation. The capping head features adjustable constant torque and automatic slipping protection once caps are fully tightened, avoiding damage to plastic caps or bottle threads from over-tightening. After capping, bottle clamping blocks release finished bottles to the next production link.

Core Structural & Control Configuration
1. Control System
The whole machine is managed by industrial PLC paired with a human-machine touch screen, supporting two operation modes: manual and automatic. In automatic mode, all production functions run synchronously; manual mode is reserved for equipment inspection, testing and fault troubleshooting. All operational data, fault alarms and production counts are displayed visually on the touch panel for easy monitoring.
2. High-standard Material Selection
All parts directly contacting liquid products and bottles: 316L stainless steel and FDA-certified non-metallic materials, resistant to chloride ion corrosion and compliant with GMP manufacturing requirements.
Machine frame, protective covers and conveying tracks: 304 stainless steel, resistant to regular disinfection with 75% alcohol.
Wear-resistant transmission parts: Oil-free linear bearings are used to avoid secondary contamination of liquid products.
3. International Brand Electrical Components
Key electrical parts are sourced from globally recognized brands to guarantee long-term stable operation:
PLC, touch screen, frequency converters: Siemens
Circuit breakers, contactors, relays: Schneider
Fiber optic & bottle detection sensors: Autonics
Servo motors: Panasonic
Main drive motor: ABB
Built-in Safety & Protection Functions
Multiple interlock protection mechanisms are pre-installed to reduce operational risks and material loss:
Safety transparent protective cover for the entire production zone; the machine stops immediately once the cover door is opened.
No bottle, no filling logic: The filling pump stops automatically when no bottle passes the sensor.
Blockage protection: Equipment suspends filling and capping if bottles get stuck on the conveyor and resumes operation after blockage removal.
Missing cap alarm: The system triggers sound and light alerts and halts production when caps run out in the vibration hopper.
Comprehensive fault self-diagnosis: All abnormal states are recorded and displayed on the touch screen for quick maintenance.

Application Scenarios
This integrated filling and capping machine is the core equipment of automatic bottle processing lines, perfectly matched with upstream rotary bottle unscramblers and downstream self-adhesive labeling machines. It is widely applied in mass production of oral syrup, herbal liquid, nutritional oral solutions, disinfectant liquids and other bottled liquid products across pharmaceutical, healthcare and daily chemical sectors. The complete line can achieve a synchronized output of over 500 bottles per hour to satisfy medium and large-scale factory production demands.