Deep Drawing Press for Rice Cooker Inner Pot One-time Forming refers to a specialized hydraulic press machine used to manufacture the inner pot of a rice cooker by drawing a single sheet of metal into the desired shape in one continuous process, eliminating the need for multiple forming steps and minimizing material waste.
Deep drawing press for rice cooker inner pot One-time forming, is a common production process. The main steps are as follows:
● Material Preparation
Choose suitable plates
Aluminum alloy, stainless steel and other metal materials are usually used as raw materials. Different materials have different characteristics. For example, aluminum alloy has good thermal conductivity, light weight and is easy to process, while stainless steel has good corrosion resistance and strength.
Inspect material quality
Carry out quality inspection on the purchased plates to ensure that their thickness is uniform, without cracks, sand holes and other defects, so as to ensure the quality of subsequent stretching.
● Mold Design and Manufacturing
Mold design
Design the corresponding stretching mold according to the shape, size and stretching process requirements of the inner pot of the rice cooker. The mold is generally composed of a punch, a die, a pressure ring and other parts. The rationality of its design directly affects the molding quality and production efficiency of the inner pot.
Mold manufacturing
Use high-precision processing equipment, such as CNC machine tools, EDM machines, etc., to process and manufacture the mold. The manufacturing precision requirements of the mold are very high, and the dimensional accuracy, surface roughness and assembly accuracy of each component need to be guaranteed.
● Pre-drawing Treatment
Sheet cutting
Cut the raw material sheet according to the design requirements so that its size is suitable for placing in the stretching die.
Sheet cleaning: Use a cleaning agent to clean the cut sheet to remove impurities such as oil, dust, rust, etc. on the surface to ensure good contact between the sheet and the die and prevent surface defects during the stretching process.
Apply lubricant: Apply an appropriate amount of lubricant, such as stretching oil, on the surface of the sheet to reduce the friction between the sheet and the die, reduce the stretching force, and prevent the sheet from breaking or scratching during the stretching process.
● Drawing Forming
Put the sheet into the die
Accurately place the pre-treated sheet into the concave die of the stretching die and ensure that the sheet is in the correct position.
Start the stretching equipment: Generally, a hydraulic press or a mechanical press is used as the stretching equipment. After starting the equipment, the punch starts to move downward to stretch the sheet.
Control drawing parameters
During the stretching process, parameters such as stretching speed, stretching force, and blanking force need to be strictly controlled. Too fast a stretching speed will cause the sheet to break, and too large or too small a stretching force and blanking force will affect the forming quality of the liner.
● Demolding and Subsequent Processing
Demolding
When the inner pot is stretched and formed, the punch moves upward to remove the formed inner pot from the mold. During the demolding process, care should be taken to avoid scratching or deforming the inner pot.
Trimming and shaping: The inner pot after demolding is trimmed to remove excess edge material to make the size of the inner pot more accurate. At the same time, the inner pot is shaped to eliminate deformation and stress that may occur during the stretching process.
Surface treatment
If needed, the inner pot of the rice cooker is surface treated, such as spraying non-stick coating, polishing, etc., to improve the surface quality and performance of the inner pot.
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