Shock disk quality appraisal

vibrating plate takes the core principle of directional vibration and material transportation as its core principle. By optimizing vibration frequency, amplitude accuracy and feeding speed, it achieves the coordination of directional sorting, stability and noise control of materials. It is widely used in the field of automated feeding of electronic components, medical capsules, hardware and food particles. In SMT patches, it is used for non-destructive sorting of tiny components; in the pharmaceutical industry, it meets the precise orientation requirements of capsules; in food packaging, it ensures high-speed continuous feeding of particulate matter. Compared with traditional vibration equipment, the vibration plate has the characteristics of multi-stage track design, intelligent adjustment and long wear-resistant life. It is the core feeding equipment of the automated production line.

Zhongke Testing is a product quality appraisal service organization registered with the court. It can provide vibration plate quality appraisal services. It has a professional appraisal team and advanced instruments and equipment to provide fair and accurate appraisal results for vibration plate quality appraisal.

As the demand for high-precision material supply increases, related quality dispute cases have increased significantly. The judicial dispute focuses on:

1, performance index dispute: feeding speed does not meet the standard, orientation failure rate;

2, material defects: vibration spring fatigue life, track surface roughness;

3, process problems: electromagnet coil temperature rise, multi-stage track connection gap;

4, contract performance dispute: core modules (such as imported electromagnetic drive system, acoustic noise reduction technology) are inconsistent with the technical agreement.

Vibration plate quality identification technical methods mainly include:

1. Visual inspection method: By directly observing the appearance, structure, operating status, etc. of the equipment, obvious problems with the equipment are found. For example, observe whether the parts of the equipment are loose, worn, deformed, etc., whether the equipment is running smoothly, whether there are abnormal noises, etc.

2. Performance testing method: Use professional testing equipment and instruments to test and measure various performance indicators of the equipment. For example, a speed sensor is used to measure the feeding speed of the vibration plate, a displacement sensor is used to measure the positioning accuracy of the equipment, etc.

3. Fault diagnosis method: When the equipment fails, analyze the fault phenomenon and find the cause of the fault. Fault diagnosis can be performed using methods such as fault tree analysis and expert systems. For example, based on the equipment failure phenomenon, possible causes of the failure are listed, and then troubleshooted and verified one by one.

4. Material analysis method: Analyze the material composition, hardness and other aspects of key parts of the equipment to determine whether the materials meet the requirements. Material analysis can be carried out using spectral analysis, hardness testing and other methods. For example, spectral analysis is used to determine the material composition of parts, and hardness testing is used to determine whether the hardness of the material meets the standards.

An electronic factory of the applicant signed a "Micro Component Vibration Disk Purchase Contract" with an equipment manufacturer of the respondent, and it was agreed that the material jam rate is ≤0.05%. After being put into production, the material jam rate reached 1.2%. The manufacturer argued that it was caused by material size deviation.

Identification analysis results:

The quality analysis expert group discussed and comprehensively analyzed the relevant information of the "vibration disk", contract technical agreement, on-site investigation case materials and other data, and made the following quality analysis opinions:

The track surface roughness Ra of the vibration disk involved in the case 1.2μm (protocol ≤0.4μm), the electromagnet driving force fluctuates ±15% (protocol ±5%); the spring cycle life is only 3×10⁷ times (protocol ≥5×10⁷times), resulting in amplitude attenuation.

The appraisal conclusion determined that defects in material technology and drive system were the main causes of material jamming.

vibration plate quality appraisal report should include:

1, appraisal purpose (such as production stagnation attribution, performance verification) and reference standards (GB/T 2423.10, ISO 10816, etc.);

2, equipment model involved, technical agreement, operation and maintenance records;

3, detection methods and equipment list (such as laser vibrometer, SEM);

4, test data and failure correlation analysis (such as the impact of roughness on friction resistance);