Product

Valve Automatic Assembly Machine

Valve automatic assembly machine is dedicated equipment for automated valve assembly. It integrates feeding, seal ring fitting, valve core press-fitting, torque tightening and air-tightness testing, delivering fast cycle time, high precision and stable pass rate for ball valves, gate valves, globe valves and angle valves.

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Automatic Valve Assembly Machine

kouteng@lonturn.com

Hotline:15828477070

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Product Overview

The valve automatic assembly machine is dedicated equipment for the automated assembly of valve products. Built around a servo motor and cam indexer as its motion core, it uses a multi-station rotary table or linear transfer mechanism to complete, in sequence, valve body feeding, seal ring and O-ring fitting, valve core and stem press-fitting, spring assembly, torque tightening, air-tightness testing and finished-product discharge, achieving continuous automatic assembly of valves from loose parts to finished products.

Compared with manual assembly, the valve automatic assembly machine offers a stable cycle time, controllable torque and press force, and consistent quality, effectively eliminating missing parts, wrong parts and insufficient tightening. Its assembly pass rate is maintained above 99.5%. It can run as a stand-alone unit or be linked with feeders such as the electric vibratory bowl feeder and the motor-driven belt elevator to form an automatic valve assembly line. It is widely used for batch valve assembly in plumbing and sanitary ware, pneumatic and hydraulic, and industrial pipeline industries.

⚙️ 1. Drive and Motion System Specifications

Parameter	Typical Range / Description
Drive type	Servo motor + precision ball screw / cam indexer; multi-station rotary table or linear transfer
Rated voltage	Standard 220V; 110V / 380V available on request
Controlled axes	4–12 axes, configured by process count and synchronization needs
Stations	Standard 8–24 stations, expandable or reducible by assembly process
Positioning accuracy	Repeat positioning accuracy ±0.01 mm; overall positioning accuracy ±0.02 mm
Transmission protection	Fully enclosed sheet-metal guards + safety light curtain, suitable for continuous operation

🔩 2. Assembly Process and Precision

Parameter	Typical Range / Description
Assembly processes	Valve body feeding, seal ring / O-ring fitting, valve core and stem assembly, spring assembly, press-fitting, torque tightening, air-tightness testing, finished-product discharge
Tightening torque	0.5–50 N·m, torque accuracy ±3%, with real-time monitoring and logging
Press-fitting force	0.5–30 kN, servo force control with traceable press curves
Air-tightness testing	Test pressure 0.1–1.0 MPa, leak rate resolution 0.1 mL/min, automatic rejection of NG parts
Vision inspection	Optional CCD vision system for missing-part, wrong-part, orientation and appearance inspection
Assembly pass rate	≥ 99.5% (with qualified incoming parts)

🏋️ 3. Workpiece Compatibility and Throughput

Parameter	Typical Range / Description
Valve types	Ball valves, gate valves, globe valves, angle valves, solenoid valves, check valves, etc.
Valve body size	Nominal bore DN8–DN100, body outer size Φ15–Φ150 mm
Body material	Brass, stainless steel, zinc alloy, PVC / PPR plastic, etc.
Cycle time per part	1.5–6 s / part, depending on process count and feeding method
Throughput	Approx. 600–2400 parts/h, configurable by cycle time and shift
Feeding method	Vibratory bowl feeding, belt elevator feeding, or automatic hopper refill; can be linked in line
Machine weight	Approx. 300–2000 kg, depending on station count and configuration

🔌 4. Electrical and Control Specifications

Parameter	Typical Range / Description
Control method	PLC + servo drive, touch-screen HMI, with recipe-based parameter saving and recall
Control interface	Supports PLC / PC / MES interfaces; can be linked with feeding, inspection and packing equipment
Monitoring and protection	Torque monitoring, force monitoring, material-shortage alarm, automatic NG rejection, safety light-curtain e-stop
Working air pressure	0.5–0.7 MPa (for pneumatic actuation); clean, dry air supply required
Data traceability	Optional assembly data logging and traceability, with barcode / QR-code binding to each product
Operating temperature	Standard 0–40°C, humidity ≤85%RH (non-condensing)

📋 5. Quick Selection Guide by Valve Size

Valve Size	Recommended Stations	Reference Cycle Time	Reference Throughput
Small valves (DN8–DN20)	8–12 stations	1.5–2.5 s	1400–2400 parts/h
Medium valves (DN25–DN50)	12–18 stations	2.5–4 s	900–1400 parts/h
Large valves (DN65–DN100)	18–24 stations	4–6 s	600–900 parts/h

Note: The cycle times and throughput above are reference values for standard configurations. Actual figures depend on workpiece structure, process count, feeding method and inspection requirements. Custom non-standard solutions are available on request.

Customization and Service

Beyond standard models, we offer custom-built solutions tailored to your valve structure, assembly process and throughput requirements, including multi-model mixed-line assembly, vision inspection, air-tightness testing, servo press-fitting and data traceability, with matching feeders such as vibratory bowl feeders and belt elevators. We provide one-stop service from solution design and equipment manufacturing to installation and commissioning. Send us your valve samples and assembly process requirements, and our engineers will recommend the right machine and provide a quotation.

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