Calculation for injection molding

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SUMMARY

This discussion focuses on essential calculations for injection molding, specifically how to determine total mold volume, production capacity, and clamping force. Key formulas include using density multiplied by volume for mass calculations and surface area multiplied by pressure for force assessments. Participants emphasize the importance of understanding basic geometric principles to avoid overcomplicating these calculations. The conversation highlights the foundational knowledge necessary for effective injection molding practices.

PREREQUISITES
  • Understanding of injection molding processes
  • Basic geometry and volume calculations
  • Knowledge of density and pressure concepts
  • Familiarity with clamping force calculations
NEXT STEPS
  • Research methods for calculating total mold volume in injection molding
  • Learn about production capacity estimation techniques for injection molded parts
  • Explore clamping force calculation formulas and their applications
  • Study the relationship between density, volume, and mass in material science
USEFUL FOR

This discussion is beneficial for engineers, manufacturing professionals, and students involved in injection molding, as well as anyone seeking to enhance their understanding of the fundamental calculations necessary for effective mold design and production.

wan2juice
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Hi all,

Here are some questions for injection molding:
1. How to calculate total mold volume?
2. How to calculate how many parts can be produced?
2. How to calculate clamping force?

Further details of the question is in the attachment.

Thx for any answers might given. ^^
 

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1. How can you be in that class if you don't know how to calculate volume?

2. What does density times volume equal?

3. What does surface area times pressure equal?
 
Skrambles said:
1. How can you be in that class if you don't know how to calculate volume?

2. What does density times volume equal?

3. What does surface area times pressure equal?

Just a note of this, when you are learning something new you can tend to overthink the problem. This has happenend to me before, I have been thinking so hard about a problem that the very basics escape me.

On saying that, I did expect the geometry to be slightly more complicated when I read the title.
 
I have encountered a vertically oriented hydraulic cylinder that is designed to actuate and slice heavy cabling into sections with a blade. The cylinder is quite small (around 1.5 inches in diameter) and has an equally small stroke. The cylinder is single acting (i.e. it is pressurized from the bottom, and vented to atmosphere with a spring return, roughly 200lbs of force on the spring). The system operates at roughly 2500 psi. Interestingly, the cylinder has a pin that passes through its...

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