Quality inspection method for plywood production machinery
In the plywood production industry, the quality of production machinery is directly related to the quality of products and production efficiency. Therefore, it is crucial to master the scientific and reasonable quality inspection methods for plywood production machinery.
1、 Appearance inspection
Overall appearance
Firstly, conduct an overall visual inspection of the plywood production machinery. Observe whether there are obvious deformations, cracks, or rusting on the casing of the device. A good appearance not only enhances the aesthetics of the equipment, but also reflects to some extent the manufacturing process and quality level of the equipment.
Welding position
Carefully inspect the welding parts of the equipment. The weld seam should be uniform, firm, and free of welding defects such as porosity and slag inclusion. The quality of welding directly affects the structural strength and stability of the equipment.
surface treatment
Check the surface treatment of the equipment. The surface should be flat and smooth, the coating should be uniform, and there should be no peeling, blistering, or other phenomena. Good surface treatment can prevent equipment from rusting and corrosion, and extend the service life of the equipment.
2、 Functional testing
drive system
Start the equipment and check the operation of the transmission system. The transmission components should run smoothly without any abnormal noise or vibration. The transmission devices such as belts and chains should be tensioned moderately without slipping. At the same time, check whether the speed regulation function of the transmission system is normal and whether it can meet the requirements of different production processes.
heating system
For plywood production machinery that requires heating, such as hot press machines, the performance of the heating system should be checked. Observe whether the heating element heats uniformly and whether the temperature control is accurate. You can use tools such as thermometers to measure the heating temperature, ensuring that the temperature error is within the allowable range.
Hydraulic system
If the equipment is equipped with a hydraulic system, check the working condition of the hydraulic system. The hydraulic pump should operate smoothly, without noise or leakage. The action of the hydraulic cylinder should be sensitive, accurate, and free of jamming. At the same time, check whether the pressure of the hydraulic system is stable and can meet the working requirements of the equipment.
Control system
Control system for testing equipment. The control system should be easy to operate, sensitive and reliable, and able to accurately control various parameters of the equipment. Check whether the display screen, buttons, switches and other control components are working properly and whether there is any fault alarm function.
3、 Accuracy testing
dimensional accuracy
For components in plywood production machinery that involve dimensional accuracy, such as saw blades, cutting tools, molds, etc., dimensional accuracy testing should be conducted. Measure the dimensions of these components using measuring tools to ensure that their dimensional errors are within the allowable range. For example, the diameter, thickness, tooth pitch, and other dimensions of the saw blade should meet the design requirements to ensure accurate size cutting of the plywood.
Parallelism and perpendicularity
For some components that require parallelism and perpendicularity, such as the hot press plate of a hot press machine and the glue roller of a glue coating machine, measuring tools should be used for inspection. Ensure that the parallelism and perpendicularity errors of these components are within the allowable range to ensure the flatness and bonding quality of the plywood.
Motion accuracy
For components that require precise motion, such as the worktable and feed mechanism of CNC machine tools, motion accuracy testing should be performed. Precision measuring tools such as laser interferometers can be used to measure the motion accuracy of these components, ensuring that their motion errors are within the allowable range. For example, the linear and rotational motion accuracy of the workbench should meet the design requirements to ensure high precision and good quality of the processed plywood.
4、 Security performance check
Protective device
Check if the protective devices of the equipment are complete and effective. The protective device should be able to effectively prevent operators from coming into contact with hazardous areas such as rotating parts, cutting parts, etc. At the same time, the protective device should be firm and reliable, not easily damaged or detached.
Emergency braking device
Emergency braking device for testing equipment. During the operation of the equipment, pressing the emergency brake button should enable the equipment to quickly stop running. The emergency braking device should be sensitive and reliable, capable of ensuring the safety of operators in emergency situations.
Electrical safety
Check the electrical safety performance of the equipment. The electrical system should be well grounded and the insulation resistance should meet the requirements. The wires and cables should be arranged neatly, without any damage, aging, or other phenomena. At the same time, check whether the leakage protection device and overload protection device of the equipment are working properly.
5、 Reliability testing
Continuous running test
Conduct continuous operation testing on the equipment to observe its stability and reliability during long-term operation. The continuous operation time can be determined according to the type of equipment and usage requirements, generally not less than 24 hours. During continuous operation, record the operating status, fault conditions, and other information of the equipment in order to evaluate its reliability.
Load testing
Gradually increase the load on the equipment while it is in normal working condition, and observe the operation of the equipment under different loads. Load testing can verify the load-bearing capacity and stability of equipment, ensuring that it can meet different production needs in actual production.
6、 Acceptance and recording
Acceptance criteria
Develop acceptance standards based on the technical specifications and contract requirements of the equipment. The acceptance criteria should specify the various performance indicators and quality requirements of the equipment, so that there is evidence to rely on during the inspection process.
Acceptance Record
During the inspection process, detailed acceptance records should be kept. The recorded content includes the inspection results of the appearance, function, accuracy, safety performance, and other aspects of the equipment, as well as the problems found and the rectification situation. The acceptance record should serve as an important basis for equipment acceptance and be archived for future reference.
The quality inspection of plywood production machinery is a systematic and complex task that requires comprehensive consideration of equipment appearance, function, accuracy, safety performance, and reliability. Through scientific and reasonable quality inspection methods, the quality of plywood production machinery can be ensured to meet the requirements, providing reliable equipment guarantee for plywood production enterprises.
