Firstly, the composition and maintenance knowledge of the paraffin forming machine
Paraffin forming machine is a common mechanical processing equipment with the characteristics of easy operation and easy cleaning. What are the components and structures of a paraffin forming machine, and how are they maintained? Now let's introduce it.
1. The paraffin forming machine mainly consists of a drum crushing and drying machine, a combustion furnace, a feeding spiral, a discharging spiral, a conveying pipeline, a dust collector, a shut-off fan, an induced draft fan, a control cabinet, etc.
2. Bearings bear all the load of the machine, so good lubrication has a great relationship with the service life of bearings, which directly affects the service life and operating rate of the machine. Therefore, it is required to inject clean lubricating oil and good sealing.
3. Newly installed wheels are prone to loosening and should be checked regularly.
4. Pay attention to whether all parts of the machine are working properly.
5. Pay attention to checking the degree of wear on the easily worn parts of the paraffin forming machine, and always pay attention to replacing the worn parts.
6. The bottom frame surface of the movable device should be cleaned of dust and other objects to prevent the movable bearings from moving on the frame when the machine encounters unbreakable materials, in order to prevent danger.
7. If there is any impact sound from the rotating gear of the paraffin forming machine during operation, it should be stopped immediately for inspection.
Secondly, analysis of the causes of problems with fully automatic paraffin forming machines
After the fully automatic paraffin forming machine malfunctions, it will stop working and resume production only after the equipment maintenance is completed. So the longer the downtime of the molding machine due to malfunction, the smaller the output of the device. The transmission system of the molding machine has multiple transmission points and a high failure rate; The feeding temperature of the injection system exceeds the standard, there is too much wax foam, which affects the stable operation of the molding machine and product quality; The inaccurate photoelectric control and high failure rate of the packaging system seriously affect the long-term operation of the molding machine.
1. Problems with the Forming Machine Equipment
1.1 Packaging system malfunction:
At the beginning of the installation of the molding machine packaging line, the GK-20 sewing and packaging machine was used. With the continuous improvement of production tasks, the original sewing and packaging machine frequently malfunctioned in production, making it unsuitable for the current operating conditions of continuous production of block shaped paraffin products, and waiting for a sewing and packaging machine suitable for continuous operation.
1.2 Fault of cold chamber tensioning transmission system
The paraffin forming machine surveyed the worn transmission sprocket and found that the diameter of the inner hole had increased to about 2mm, which is 30 times the standard, causing the transmission chain to jump and form torsional force with the chain, resulting in jamming. The reason for its severe wear is that the inner holes of the left and right drive sprockets rotate in a sliding fit with the shaft. Due to poor lubrication, they wear quickly and the clearance exceeds the standard.
1.3 Wax injection system malfunction
Due to the continuous operation of the molding machine for nearly 18 years, although it has undergone three major repairs, some accessories can no longer be purchased due to design defects in the original factory and model obsolescence. The actual operating condition is poor, and the wax injection volume fluctuates frequently, resulting in a high failure rate. Through operation observation and waiting for improvement of the wax injection system to adapt to the current operating conditions.
2. Management issues
2.1 Inadequate inspection of the cold room by the team
Due to the temperature inside the cold room being around -15 ℃, the team's inspection enthusiasm is not high. Most of the circular arc tracks, chains, sprockets, and tension sensors of the forming machine are located in the cold chamber, so there is a situation where small faults cannot be detected in a timely manner, leading to plate jamming.
2.2 Poor night maintenance and operation of the molding machine
