The automatic screw locking machine is an industrial device that achieves precise and efficient screw locking through automation technology. Its core function is to replace manual labor to complete repetitive and high-precision screw locking operations. It is widely used in industries such as electronic manufacturing, automotive parts, home appliances, and medical devices. The following is an explanation from four dimensions: function, advantages, application scenarios, and technical principles

I. Core Function: Full coverage of the automated locking and payment process

Automatic screw feeding

By means of vibrating discs or air-blowing feeders, the loose screws are arranged in a fixed direction and conveyed to the locking mechanism, avoiding the time waste and direction errors of manual material taking.

In the assembly of mobile phones, the vibrating tray can simultaneously handle M1.0-M3.0 micro screws, with a feeding speed of 200-500 pieces per minute.

Precise positioning and locking

By integrating a visual system or mechanical positioning device, precisely align the screws with the threaded holes of the workpiece, and then complete the rotational locking through an electric or pneumatic screwdriver.

Technical details

Torque control: Torque is monitored in real time through servo motors or sensors to ensure that the locking force meets the standard (for example, the screws of car seat belts need to reach 10-15N·m).

Depth detection: The laser or displacement sensor measures the screw locking depth to prevent floating locking or over-locking (for example, the screws on the PCB board need to be controlled within an error range of ±0.1mm).

Multi-axis coordinated motion

The equipment is equipped with 2-6-axis mechanical arms or Cartesian coordinate system platforms, enabling the free movement of screws in three-dimensional space and adapting to complex workpiece structures.

Example: In the assembly of a laptop casing, a 6-axis robot can simultaneously lock 12 screws on parts such as the keyboard, screen hinges, and interfaces.

Ii. Significant Advantages: Triple improvements in efficiency, quality and cost

Efficiency improvement

Single-station efficiency: The average time for manual screw locking is 8 to 15 seconds per screw, while the automatic screw locking machine can shorten it to 1 to 3 seconds per screw, increasing efficiency by 300% to 800%.

Multi-station parallel operation: Through multi-head design (such as 4-head, 8-head), multiple screws can be locked simultaneously, further reducing the cycle time.

Case: After a certain home appliance manufacturer introduced an automatic screw locking machine, the production capacity of the outdoor air conditioner assembly line increased from 800 units per day to 1,500 units per day.

Stable quality

Torque consistency: The torque fluctuation of manual screw locking can reach ±20%, while that of automatic equipment can be controlled within ±5%, reducing loosening caused by insufficient locking force or stripped threads caused by excessive tightening.

Defect rate reduction: Through visual inspection and sensor feedback, automatic equipment can reduce the defect rate of screws such as missed locks and floating locks from 2% to 5% manually to below 0.1%.

Case: A medical equipment manufacturer introduced an automatic screw locking machine in the assembly of implants, and the product return rate dropped from 3% to 0.2%.

Cost optimization

Labor savings: One automated screw locking line can replace 3 to 5 operators. Calculated at an annual salary of 80,000 yuan per person, the annual cost savings range from 240,000 to 400,000 yuan.

Material waste reduction: The automatic feeding system can recycle unlocked screws, avoiding scattering and loss during manual material collection (for example, the screw waste rate in electronics factories has dropped from 5% to 0.5%).