Slider spring hength and strength calculation

Processing size:

1. ØD2=ØD+2

2. Ll = total spring length (L) - preload value of spring (N) - slider core pulling distance (L2)


Spring length calculation: (refer to picture 1 for length calculation)

★L≥H/(36%(compression percentage)-10%(pre-compression percentage)

Assuming the core pulling distance (L2)=15m, the total length of the spring L≥15/(36%-10%)=15/0.26=57.7

As we can see that the total length of the spring (L) should be taken as 60mm

Spring hole depth L1=L-L*10%-L2=60-60*10%-15=39mm


Slider_spring_hength_and_strength_calculation_.jpg


Strength requirements of the slider spring:

1. When the spring is applied to the core pulling of the slider, the load strength must be checked;

2. The weight of the slider on the top side must be kept within 2/3 of the maximum load of the spring; the weight of other sliders must be kept within the maximum load of the spring;

3. When the same slider uses multiple springs, the maximum spring load of the slider is the sum of the loads of all springs;

4. When calculating the maximum load of the slider spring, the compression amount should be in the pull-out state of the slider;


The spring load is calculated as follows:


Picture 2:

1. The slider is in the extracted state, so the length of the spring after being compressed is L1;

2. Assume that the free length of the spring is L;

Calculation way of spring load: load = spring constant X compression

                   That is: load = spring constant X (L-L1)

The spring constant can be obtained from the standard parts data of the corresponding brand (such as MISUMI);



Slider_spring_hength_and_strength_calculation_03.jpg

Related News about USM Injection Mold
  • What is the side parting and core pulling mechanisms with their function?

    What is the side parting and core pulling mechanisms with their function?

    May 31, 2022When there are holes, cavities or cores on the inside or outside of the injection-molded plastic parts that are different from the opening and closing directions of the mold, the plastic parts cannot...view
  • The design principle of the exhaust slot

    The design principle of the exhaust slot

    Mar 6, 2022The exhaust system of plastic molds is also very important, if the product has air trapping or exhaust system is not suitable will have a big impact on injection molding production and product...view
  • The main reasons for air trapping of plastic injecton mold

    The main reasons for air trapping of plastic injecton mold

    Mar 1, 2022During the injection molding process, the front end of the slight ribs may be air trapped and plastic burnt, and also cause the molded part may become black and carbonized. The mechanism of air...view
  • Temperature system of injection mold

    Temperature system of injection mold

    Feb 8, 2022Hi everyone,the mold cooling time is the longest during injection, so the design of mold temperature system controlling is very important, we will talk about mold cooling, heating system in following...view
  • Design Tips of Vacuum Venting Mold

    Design Tips of Vacuum Venting Mold

    Mar 30, 2022There are some regular venting way which are parting surface venting, insert venting, insert pin venting and well-ventilated steel, but there is a special way is vacumm venting, it will need vacumm...view
  • Unique Solutions Mold Profile

    Unique Solutions Mold Profile

    Dec 27, 2021USM (UNIQUE SOLUTIONS MOLD LIMITED) was founded in 2012 and is located in Dongguan City, Guangdong Province, a famous mold manufacturing province in China, the plant covers an area of 3500 square...view