Automotive screw tightening and inspection machine

Whats/App: +86 156 1874 6768

Web: standard-groups.com

Application

This inspection line is primarily used in automotive interior manufacturing for the following applications:

Detecting screw installation in cargo covers, dashboards, and other interior panels

Verifying the presence, position, and stability of screws in mass production

Supporting automated assembly lines with integrated screw detection and quality assurance

Compatible with production setups where high-speed, repeatable inspection is required

Standards

The system aligns with or supports adherence to relevant international and industry standards, including:

ISO 9001 – Quality Management Systems

ISO/TS 16949 – Automotive Quality Management

IEC 61010 – Safety Requirements for Electrical Equipment

ISO 2768 – General Tolerances for Linear and Angular Dimensions

ISO 12100 – Safety of Machinery – Risk Assessment and Risk Reduction

JIS B 1160 – Automotive Fastener Standards

Accessories

Vision camera modules or optical sensors

PLC controller and HMI interface

Screw feeder hopper with low-stock sensor

Light barriers for detection and NG channel

Barcode scanner for material verification

Pneumatic blow tubes for screw placement

Alarm and signal lights for fault indication

Test Procedures

Closed-Loop Supply Control

Use PLC and ring-type photoelectric sensors at screw entry and exit points. Signal triggers the locking operation; otherwise, an alarm is issued.

The low-stock sensor in the hopper automatically triggers replenishment to prevent missed supply.

Accurate Detection and Error Prevention

Long/short screw detection uses paired through-beam fiber optics; screws passing through the defined optical zone are accepted, otherwise rejected to NG channel.

Barcode scanning ensures only the correct screw type is supplied.

Optimized Layout and Feed Rate

Adjust vibration frequency to maintain stable feed, achieving standard screw supply speeds of 40 pcs/min or higher.

Minimize the travel distance in blow-tube layout to avoid screw misrouting.

Test feed rhythm to match actual production line pace.

Maintenance Information

Regularly clean vision sensors, optical fibers, and camera lenses to prevent dust interference.

Inspect and lubricate moving parts and vibratory feeders monthly.

Check PLC signal integrity and HMI functionality periodically.

Ensure pneumatic blow tubes and air supply are free of obstruction.

Calibrate detection thresholds according to screw specifications to maintain accuracy.

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