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How to Cal cu cul at ate C la lampi ng ng fo for ce ce ~ In Inj ec ecti on on M ol ol d D es esi gn gn Tutor ia ial , Technol og og y and Eng in ineer in ing
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How to Calculate Clamping Clamping f orce orce 11:32 PM
calculator , Clamping force, force, mold design design
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15 comments
basic
as we know clamping unit purpose is to keep mold closed against force when part
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injected with plastic material, becaus e of that clampi clamping ng force at least more than injection force, we can applied this clamp pressure both both in in j jection ection machine with with
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Injection molding machines are machines are usual ly characterize characterized d by the tonnage of the
6 1 0 9 2 0
clamping force that they provide. The clamping force, indicates the amoun t of force that the clamping uni t can apply to the the mo ld to keep it securely closed d uring the injection inje ction of the the molten pl astic, picture below shown i njection machine from Nissei
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How to Calculate Clamping force as we know clamping unit purpose is to keep mold closed against force when part injected with plastic material, because of that clamping for... Construction Injection Molds Classification classification or types of mold injection very depend on what we need to make the plastic parts, because every parts have specific and uniqu... or mula mula the clamping the clamping force is prop ortional to the projected projected area of the moulding and runner, and an d must be b e oppos ed by the the clampin clampin g force. although although a proportion of the pressure produced by the injection cylinder is transmitted to the cavity, cavity, various various loss es occurring in the he ating cylinder, nozz nozzle and gate we can consider that force acts acts on
Basic Functions of Mold Base Parts A mold plate i s any plate require required d to built a complete mold, in all plate use for molds have the main requirements, they are : 1. Good corro...
the mold to make it open can be calculated from the following formula:
Plastic Processing Methode Types
Force (lb.) = Pressure (lb/in2) x Projected Area Area (in2)
what is projected area ? projected area is area that one line with mold base parting line, for complete calculation, calculate the runner projected area and part projected area is more precision. see picture below to get the imagine og projected area
gate dimension
Today, they are various plastic Today, processing method av available ailable in industrial process, from the method of processing plastic we can divided divided into... shringkage of mold calculation, mold calculator as the request, lot of people need engineering enginee ring and calc ulation of injection mold and mold design, so i try to make little software, the name...
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Opening Construction of 3 Plate Mold Type previous post http://mould-
technology.blogspot.com/2008/08/mainconstruction-pin-at-3plate-mold.html we can see closed condition of three ... Already Alread y a member? Sign in
Runner system, flowing part of plastic injection After material injected by nozzle, runner systems will convey the molten material from the sprue to the gate. basic runner system consist of...
http://moul d- technol og y.bl og spot.com/2008/10/how- to- cal cul ate- cl ampi ng - for ce.html
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How to Cal cul ate C lampi ng for ce ~ Inj ecti on M ol d D esi gn Tutor ial , Technol og y and Eng ineer ing Loose core for ejecting undercut at inje ction mold
Clamping force calculator below are clam ping force calculator using java script, the script i get from http://www.custompartnet.com , with little mod ification so it's more su itable with blogger post page.
Clamping Force Number of cavities:
Pict ure above shows t he loose core, or often also called slope ejectors or inclined pin, loose cores is one method to overcome the undercu... wall thickness and sink mark estimation Uniform wall thickness in plastic part design is critical.Non-uniform wall thickness can cause serious warpage and dimensional control probl...
Top 6 Inje ction Molding Company it's difficult to list all company that provide any solution about injection machine, include manufacturer, injection molder, machine ma...
Part projected area (in²): Runner projected area (in²): Shot projected area (in²): Cavity pressure (psi): Separating force (tons):
Factor of safety:
0.8
Clamping force (tons):
this picture below als o have good visual ization to explain projected area, clamping force and injection pressure
if you prefer see origin al calculator go to this webpage Clamping force calculator but why i set s afety factor 0.8, the resul t will m ore lower than without safety factor, in clamping force those formul a is before correction for pressure drop and o ther, so the injection pressure always more lower than those manual calculation.
or we can use graph or table to define clamping pressure, like this one from niir.org
http://mould-technology.blogspot.com/2008/10/how-to-calculate-clamping-force.html
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15 comments: sherin ne auman says: May 6, 2010 at 12:44 AM
thank u very much for your information. expecting m ore details and specifications. Reply
Arun Kumar says: February 5, 2011 at 6:47 PM
how to calculate runner projection area in 3 plate mo uld!!! Reply
rukesh says: March 9, 2011 at 12:50 PM
Hi Thanks for the informa tion ,but how to calculate the cavity presure Reply
saduddin says: May 6, 2011 at 4:30 AM
Hello all, Could you please he lp to determine the clamp ing force generated by the clips which is being bol ted with 2 bolts on each si de. I have used M27x2 with the torque of 959 Nm. the diameter which had to clampe d is 364 . Kindly give valuable s ugges tion on how to proceed on this type of problem. Reply
Kunal says: May 24, 2011 at 11:11 PM
Hi there. Nice blog. You have shared us eful information. Keep up the good work! This blo g is reall y interesting and gives good d etails.Pressure Die Casting Machines, pressure die casting components. Reply
M.A.J says: June 30, 2011 at 7:24 AM
http://mould-technology.blogspot.com/2008/10/how-to-calculate-clamping-force.html
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Why the mold s hould clos e first then the injection unit close forword Reply
Pranaya Be hera says: Augu st 30, 201 1 at 5 :33 A M
How to calculate mould parting s urface matching area by consid ering the moulding machine Reply
Chandra says: October 11, 2011 at 11:44 PM
How to calculate tonnage of injection molding machine Reply
shashi says: November 29, 2011 at 10:01 PM
Thank you very much for the information, could you plea se m e to calculate the cycle time in pres sure die cas ting. Reply
Devendra Bhanage says: June 18, 2012 at 4:39 AM
We have 250 Tons machine.Injection pressure is 1067 Kgs/Cm2. holdon pressure is 800 kgs/cm2.what is cavity pressure & what is clamping pressure.Pls.guide. Reply
Injection Molding says: Augu st 4, 2012 at 4:5 3 AM
Dear hasnan Its nice to recall old days of measurements the most im portant part ofplastic injection molding thanks for reminding measurements Reply
topworks says: March 30, 2013 at 4:37 AM
Thanks for our information,also on my website has some information for that:http://www.myplasticmold.com/widget-for-injection-moldingcalculation.html Reply
AcmeDisys says: July 15, 2013 at 1:55 AM
I really appreciated with it, This i s fine to read a nd valuable pro potential, I really bookmark it, pro broaden read. Appreciation pro sharing. I like it. This gives Acme Dis ys un conventionality in manu facturing un it. The company has made sure of deploying high end CNC machines & Vertical Milling Centres from Mazak, Makino an d MoriSeiki for producing precision mold inserts and superior quality mold bases . injection mold equipments | Plastic Injection Mould |
http://mould-technology.blogspot.com/2008/10/how-to-calculate-clamping-force.html
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whz says: Augu st 13, 201 3 at 1 1:32 PM
Great idea. I enjoyed it. You have done a great job . Thanks for sha ring. It help m e a lot to get advanced information.
Nissei Machines Reply
Chaitanya Joshi says: September 2, 2013 at 8:03 AM
Very useful in formation in very fluid words . Could you pleas e tell, can we approximately tell clamping force from machine motor power and average daylight? Thanks in ad vance. Reply
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