Table of Contents
- 1 What is tonnage in injection molding machine?
- 2 How do you calculate the shot capacity of an injection molding machine?
- 3 How is tonnage of press calculated?
- 4 How do you calculate the weight of mold?
- 5 How do you calculate the tonnage of a hydraulic press?
- 6 What is the process of injection molding?
- 7 What is injection molding tooling?
What is tonnage in injection molding machine?
The “tonnage” is the measure of force that is required to keep the tool closed during the injection process. This force is the main factor in determining the injection molding machine size required for producing the part.
How do you calculate the shot capacity of an injection molding machine?
To calculate the injection stroke or shot size, we can put all values in the formula of shot volume, i.e., Shot Volume = π x r2 x Shot Size. Here, r=1.4 and shot volume is 26.71 cm^3.
What is the Mould tonnage?
The “tonnage” is the maximum of clamping force that a injection molding machine can offer to keep the the injection tool tightly closed during the injection process. This clamping force ensure the mold won`t apart or getting loose and having products with sharps.
What is the weight of injection molding machine?
Specifications:
| INJECTION UNIT | ||
|---|---|---|
| Screw Diameter | mm | 35 |
| Screw L/D Ratio | 20.1 | |
| Shot Size(Theoretical) | cm3 | 160 |
| Injection Weight(PS) | GMS | 146 |
How is tonnage of press calculated?
For a stamping operation, knowing the press tonnage required to produce a part is essential….Rule-of-Thumb Calculations.
| Equation 1 estimate | Tonnage = 1 * 0.06 * 80 = 4.8 tons |
|---|---|
| Equation 2 minimum | Tonnage = 3.14 * 0.06(20\%) * 0.6(40) = 0.9 tons |
| Equation 2 maximum | Tonnage = 3.14 * 0.06(50\%) * 0.6(55) = 3.1 tons |
How do you calculate the weight of mold?
To figure the weight, the next step is to divide the volume of the rubber needed to make the mold by the specific volume yield of the mold rubber: 37 in³ ÷ 27.7 in³/lb = 1.34 lbs. (606.31 cm³ ÷ 0.962 cm³/g = 630 g). 1.34 lbs. (630 g) is the total weight of rubber that you will need to make the mold (Part A + Part B).
How is press tonnage calculated?
What is injection Moulding?
What is Injection Moulding? Plastic injection moulding is the process of melting plastic pellets (thermosetting/ thermoplastic polymers) that once malleable enough, are injected at pressure into a mould cavity, which fills and solidifies to produce the final product.
How do you calculate the tonnage of a hydraulic press?
To calculate hydraulic press force, first find piston area from piston diameter. Then multiply the pressure in psi by cylinder area in inches. Divide force in pounds by 2,000 to get force in tons.
What is the process of injection molding?
What is Injection Molding: Injection Molding is a manufacturing process for producing parts in large volume. It is most typically used in mass-production processes where the same part is being created thousands or even millions of times in succession.
What is vertical injection molding?
Vertical Injection Molders . Vertical injection molders are used to create molded plastic pieces that have to be attached or inserted into other materials. An example of an end product where vertical injection molders are useful is for producing a screwdriver, a metal piece inserted into a plastic mold.
How does an injection molding machine function?
Hopper: Here we insert the ingredients of plastic material for the molding process.
What is injection molding tooling?
Injection molding tooling is a process for manufacturing parts from plastic materials. A barrel feeds liquid plastic into a mold, where it hardens into the shape of the mold cavity. A toolmaker makes the mold out of metal by using precision machining to create the desired features.