We specialize in building plastic injection mold,
2K mold for automotive lighting, Exterior Mirror, Air induction, Interior, Exterior and others.
Zimbabwe Auto Interior
Category:
ZimbabweAuto Interior
Product Description
Five elements of injection molding process:
1. Temperature:
A, oil temperature: for the hydraulic press is due to the continuous operation of the machine hydraulic oil friction generated heat, it is controlled by the cooling water, when the boot to confirm the oil temperature at about 45 ° C, if the oil temperature is too high or too low will affect the transfer of pressure.
B, material temperature: that is, the temperature of the barrel, this temperature should be set according to the shape and function of the material and product, if there is a file, it should be set according to the file.
C, mold temperature: This temperature is also an important parameter, its level has a great impact on the performance of the product, so the setting must consider the function and structure of the product, but also take into account the material and cycle.
2. Speed:
A, the speed setting of the opening and closing die, the setting of the opening and closing die is generally according to the principle of slow-fast-slow, so the setting mainly considers the machine, the mold, and the cycle.
B, ejection setting: can be set according to the structure of the product, the structure is complex, it is best to use slow ejection some and then use fast demoulding, shorten the cycle.
C, rate of fire: according to the size of the product, the structure is set, if the structure is complex, the wall can be fast, if the structure is simple, the wall thickness can be slow, but also according to the performance of the material, from slow to fast setting.
3. Pressure:
A, injection pressure: according to the size of the product, the thickness of the wall, from low to high, commissioning to consider other factors.
B, holding pressure: holding pressure is mainly to ensure the shape of the product, stable size, its setting should also be set according to the structure and shape of the product.
C, low pressure protection pressure: This pressure is mainly for the protection of the mold, so that the mold damage to a minimum.
D, clamping force: refers to the pressure required by the mold to close the mold, some machines can adjust the clamping force, some can not.
4. Time:
A, shooting time: this time setting must be longer than the actual time, can also play the role of shooting protection, in the shooting time setting value is about 0.2 seconds larger than the actual value, the setting should be considered with the pressure, speed, temperature.
B, low voltage protection time: This time in the manual state, first set the time to 2 seconds, and then add about 0.02 seconds according to the actual time.
C, cooling time: This time is generally set according to the size and thickness of the product, but the melting time should not be greater than the cooling time, so that the product can be fully shaped.
D, pressure holding time: This time is after the injection is completed in order to ensure the size of the product, in the pressure holding pressure to let the melt back flow before the gate cooling time, can be set according to the size of the gate.
5. Location:
A. The position of the opening and closing die can be set according to the speed of the opening and closing die, and the key is to set the starting position of the low pressure protection, that is, the beginning position of the low pressure protection should be the point that is most likely to protect the die and does not affect the cycle, and the termination position should be the position that the front and back of the die contact when the slow closing die.
B, ejection position: This position can meet the complete demoulding of the product, first from small to large incrementation to set, pay attention to the installation of mold must be set to "0", otherwise easy to damage the mold.
C, glue position: according to the size of the product and the size of the screw to calculate the amount of its material, and then set the corresponding position.
D, V-P position should be from large to small, that is, short-short method to find the V-P position (that is, V-P switching point).
