English
русский
Insert pin of vengting design for molded parts
Insert pin of venting:
It is difficult to make exhaust slot when end runner is not in parting surface during injection, and there is no matching gap available, but we could make the venting pin at end of runner side, and also the exhasut slot will be connected with the air in outside as the venting system, there are some tips for making the insert pin as following:
1. The venting pin should fixed with the mold by H7/g6;
2. There should be an exhaust slot on the side of the venting pin and connect with the air (as shown in picture 1);
3. It will be used venting pin when air trapping position is fixed, but it will be better to use venting insert if the air trapping position is changing in local;
4. The sealing area of insert pin will be made according to the size of insert pin, and the length of sealing is 10-20mm, then it can clearance later;
5. The top of insert pin will make 3 snaps to make venting, and the depth is 0.02~0.05mm;
6. Insert pin is changed by injector pin.
Venting insert design of molded parts
Mar 13, 2022In the thin-walled cavity, the end of the melt flow, the bottom of the blind hole of the mold cavity, the end of the solid column of the plastic part, the bottom of the plastic part rib and screw...view
Plastic injection mold runner system design points
Jan 9, 2022When designing the gating system, Firstly, we should consider making the plastic melt fill the cavity with core side quickly to reduce pressure and heat loss; secondly, it should be economically...view
Controling method of plastic injection mold temperature
Feb 15, 2022Except for heat radiation and heat convection from the mold, most of the heat bring into the mold by the plastic needs to be taken out of the mold by the circulating heat transfer medium by heat...view
Comparison of water-assisted and gas-assisted injection molding
May 19, 2022Comparing with water-assisted injection molding technology and gas-assisted injection molding technology, the fundamental difference is the nature of the auxiliary molding media used. One is liquid...view
Plastic molding shrinkage rate
Dec 30, 2021Plastic parts getting smaller by shrink, due to the temperature decrease during the molding process, and the shrinkage is expressed by the shrinkage rate, it is common plastic shrinkage rates are...view
The common fixing method of angle pin
May 10, 2024The angle pin is a common part of the drive slider, and the fixing and installation methods as following: 1. Pass through the mold plate directly and press the angle pin with the top plate to fix it,...view