Blackboard Shaker

The Blackboard Shaker is a precision instrument designed for evaluating the appearance quality of yarns. It shakes yarns of specified density across a blackboard surface, allowing standardized visual assessment and comparison. It is widely used in textile laboratories and quality control departments for yarn inspection.

Application

The Blackboard Shaker is suitable for:

Quality control in textile manufacturing

Laboratory testing of yarn uniformity and appearance

Inspection of spun yarns before weaving or knitting

Comparative evaluation of yarn density, thickness, and consistency

Educational and research purposes in textile studies

Supporting textile standard compliance testing

It is compatible with various yarn types, including cotton, wool, synthetic, and blended fibers.

Standards

GB/T 999 – Test methods for textile yarn

GB/T 398 – General rules for textile testing

GB/T 5324 – Test method for yarn appearance

FZ/T 32004 – Test methods for yarn twist and density

FZ/T 32005 – Yarn appearance quality evaluation

Features

(1) Adjustable blackboard for different yarn densities.

(2) Precise shaking mechanism to ensure consistent yarn movement.

(3) Compact, stable structure for reliable operation.

(4) Easy-to-read blackboard surface for visual inspection.

(5) Low power consumption, suitable for laboratory use.

Parameters

Accessories

Spare fuses

Instruction manual

Yarn density templates (optional)

Test Procedures

(1) Place the blackboard on a flat, stable surface.

(2) Mount the yarn samples according to the required density.

(3) Turn on the shaker to start the yarn oscillation.

(4) Observe the yarn appearance on the blackboard during shaking.

(5) Record deviations, irregularities, or defects according to the standard evaluation method.

(6) Turn off the machine and clean the blackboard surface.

Maintenance

Regularly check the shaker motor and connections.

Clean the blackboard surface with a soft cloth; avoid abrasive cleaners.

Ensure yarn density templates remain in good condition.

Store the device in a dry, dust-free environment.

Inspect the power cable and replace if damaged.