The sorting machine is responsible for automatically sorting the tested chips into different silos based on the test results (such as good/bad products,
different performance levels).

Core requirements: high speed, high precision, high stability, low vibration.

Crystal disk/wafer holder positioning

Function: Carry wafers or cut chips and accurately move each chip on them to the picking position.

Servo driven role: Control the X-Y axis movement of the wafer stage to achieve precise positioning at the micrometer level. When the camera or sensor
recognizes a chip, the servo system needs to quickly and smoothly move the next chip to the target position. Its high repeatability positioning accuracy
ensures that the picking mechanism can find the correct position every time.

Picking arm/picking head motion control

Z-axis lifting: Control the vertical movement of the suction nozzle to achieve a fast and smooth "descent suction ascent" action. The 'soft landing'
function is crucial, with precise control of torque and position through servo drive to prevent mechanical stress damage to fragile chips.

Rotation: Control the angle of the pickup head and correct the direction of the chip.

Function: Use a vacuum nozzle or gripper to pick up the chip from the wafer film or wafer stage.

Servo driven role:

Longmen frame or linear motor drive

Function: In high-speed sorting machines, the pickup head is usually installed on a gantry or linear motor driven by a servo motor to achieve high-speed
long-distance movement in the X-Y plane.

Servo driven role: Provides high-speed, high acceleration motion. DC low-voltage servo has fast response, can quickly reach the specified speed and
accurately locate, thereby minimizing the time it takes for the chip to move from one position to another and improving the output per unit time.

Sorting arm and silo positioning

Function: Transport the tested chips to the corresponding classification bin.

Servo driven role: Control the multi joint motion SCARA robot of the sorting arm to move chips above different silos. The servo drive needs to be linked
in real-time with the test result signal to ensure that good and defective products are accurately placed in the designated material position.

Advantage:

High speed and high throughput: The fast response and motion cycle ensure the high UPH (unit hourly output) of the sorting machine.

High precision and low damage rate: Accurate position and torque control avoid physical damage to the chip during picking and placing.

High reliability: 7x24 hour continuous operation, low failure rate is crucial for maintaining production line capacity.

Safety: Low voltage drive avoids potential risks of high voltage and is more suitable for use on automation equipment with frequent contact.