How to calculate Clamping tonnage of injection mould (PART -1)
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- Опубликовано: 20 авг 2024
- Designers In this video we learn
How to calculate injection mould clamping tonnage with easy and simpler way..
#mouldtonnage #howtocalculateinjectionmouldingtonnage
Very good teaching ...well done
Great work sir👍👍👍
Very Helpfull. I like the way you explain.
Please make one video on runner and gate calculation I am not able to define it. Please explain what is the material constant I will be very thankful to you.
Sir I like your videos & I want some info about runner and gate calculation
Good sir
Thank you
Very good
Thank you
'Thalaiva' Thank for all the videos you made
Nandri🙏
@@VindyCAD நீ இதற்கு தகுதியானவன் Bro
Great teaching sir, Can easily understand it. Please can you make the second video for the same for thin wall and thumb rule method
I will be awaiting for your video sir...
This video is very helpful..and please share cavity pressure for some more plastic materials.
Thank you...🙂
Pls make video on how to calculate loading well depth
Loading well?means
Thanks , very good
How to measure toygol system parlizam...?
By fixing dail gauges
Dear sir please make a video on Lifter mechanism using & calculation of lifter .
Already available bro check
Pls make vedio for plastic pressure (cavity pressure) calculation and hydrolic cylinder calculation for slide
Sure brother..
Please make video on spring selection for slider,ejection plates.
It's already available check videos and description
@vindycad how to calculate tonnage required for bumper mold
Pls upload 2nd method for thin wall thickness
Sir does injection pressure depends on resin material or size of part ??
So opening pressure of resin will be independent of size of the component ??
What is the relation between injection pressure and opening pressure of resin ??
I tried to explain the same..
Injection pressure is fully depend on
volume of passage from nozzle to cavity impression.
Here in cavity impression,if there is less thin wall than injection pressure and opening pressure both raises.
always Opening pressure is the pressure started acting once the impression is full and still plastic tring to enter impression. So always moul impression filled 90% with injection pressure remaining will be filled with hold on pressure so that to avoid mould opening and sharp edges on parting line.
I hope my answer satisfied you.
Injection pressure depends on
Material type
Material MFI
Material temperature
Mould temperature
RPM of screw
Runner gate size.
Wall thickness of impression.
Etc.
Great video Sir. My question how can we get opening pressure chart of the materials?
Hi, you mean mould opening??
Whatever less than clamp pressure is result mould opening.
150 bar usually considered as injection pressure material which are not hard..
Am unable to understand Your question..
@@VindyCAD my question is, how can we determine mold opening pressure or injection pressure?
Ok i got it..
Injection pressure thing it's usually can't be calculated because it varies part to part..
It increases when..
Wall thickness reduced.
Using hard material.
Low melt temp
Low mould temp
Low MFi
No air vent.
Small cross section / gate
It reduces when
Wall thickness is optimum.
Temp of melt and mould is high
Using Dia of reciprocating screw.
RPM of screw is more(material shearing is more)
Good air vent.
So it can't be calculated by formula refer this chart
drive.google.com/file/d/1u8WpQX57zaGnoM_zTB0z_KxQMIC5wUfl/view?usp=drivesdk
Good to answer your questions.
@@VindyCAD Great! thanks, then how can we get the "Resin Opening Pressure Chart" to calculate exactly the tonnage?
@@saibalbiswas7884 watch latest upload..made video to clear all doubts.
Hello Sir I have few questions to you please reply.
1. If give same heat to amorphous plastic material and semi crystalline material then which one have higher viscosity and lower viscosity . For example if give 200°c temperature for both of them which one has low viscosity.
2 Generally which one is more viscous because A very important property for choosing a particular thermoplastic is the melt flow index, especially in the case of polyolefins and styrene. The higher the flow rate, the lower the viscosity of the polymer and vice versa.
Its all depends on MFI Nowadays raw material specification are available at both end and uniq material available.,
Like clear ABS available.. crystallization of material has been improved to reduce cycle time..,
And MFI available wide range..so it's difficult to answer.
Both amorphous and semi crystalline and crystalline available with different MFI..as per you application you can choose.. nowadays there is minimum restrictions over raw material
@@VindyCAD okk sir make detail video of plastics.
Ok share channel among with friends..my channel vdint have good view rate
@@VindyCAD sure
Sir , I have a question on FOS ...at last minute of Ur video I got some confusion. That 32-125 tonnage is machine minimum and maximum tonnage right ? Or we can set from 32 ton to 125 ton for that mould in any machine ? I need ur explanation
Thank you satish kumar for asking question.
The third stage of calculation sets limit -/+
You can't go below 32T (least required tonnage)
You can't go beyond 125T ( maximum tonnage)
Choose any machine between 33-125
In this condition you Can choose mean value for better function.( Not more not less)
Mean value= 32+125=157T / 2
= 78.5 T
So go for 80T
So the actual tonnage for that mould is 25T ..we can set the mould in the machine in the range between 32- 125T .am I right?
Without FOS tonnage is 25 T .( Not to say tonnage without FOS)
Always consider machine tonnage with FOS..
Choose machine Tonnage is in between 32-125T. ( Best is considering mean value 80 T)
Ok thank u 😊😊😊....I am expecting thin wall products tonnage calculation from u
Please find ruclips.net/video/pM-YsDLzwgo/видео.html
Sir, if it is separate cavity and separate projection area then how to calculate.?
What mean by saparate cavity??
Can you tell me about selecting the right 'psi'?
You have taken 300, because it is passed until the end of the component,but can you give a more clear explanation
I have taken kgf/cm2 if you have your value in psi convert it into kgf..psi to kgf (1 kgf =14.22 psi)
How to calculate required plastic pressure to fill cavity and required cylinder size for slide plz. Urgently tell me thanks
Brother usually it don't calculated.
It depends on below factors.
1) Raw material
2) MFi
3 ) wall thickness
4) part geometry
5) runner @ & gate size
6) temperature
7) mould design
If there is deviations above factors you cant calculate.
So some standards chart prepared mean injection pressure follow that only
But hydrolic cylinder should calculated by max plastic pressure to withstand slide
Brother there no relationship between injection pressure and slides cylinders..as wedge will protect slides in closed condition while injection..
Make slide element strong that's it..
Could you please share with us this powerpoint file ?
I don't hv it now
How to get 20% value of 24.9
It's 20% or more so you need to add 20% to 24.9
Than you should multiply 24.9 to 1.20 or 1.25
I hope you understood
@@VindyCAD 20% means it comes around 4.98 .... Not 1.25.
No no you are miss interpretating it..add 20 to 25 % of 24.9 means multiply 24.9x 1.25(25%here)..
Thank you for watching video.
@@VindyCAD sir I m still confusion. How do we get those 1.25,??
Simple 25 % means 25/100 = .25 correct now you have to add this so generally we should multiply 1 times with .25 so 1.25 ..try if it's 75 % you should multiply 1.75 ..easy
Sir if the mould is hot runner then how to calculate clamping force?
Same no change
@@VindyCAD sir I have tried but not getting the results.can you make a another video based on hot runner mould.
Or try to explain me on this my example..
A square container bottom mould having product dimension 151.95 mm and height 77.50 mm.
No. Of cavity - 02 no. And
Raw material used - random 100%
Sir can you make video to calculate thin wall container clamping force
Very good sir
Tq keep learning
@@VindyCAD my english is not gud but I will try to understand
Good