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.
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
Parting surface venting of runner system
Mar 10, 2022There are a large amount of gas in the main and sub channel, these gas are discharged through the pull rod (push rod) during injection processing, a part of gas come out from exhaust slot on parting...view
Side gate of plastic injection mold runner system design
Jan 23, 2022In order to get the best injection quality, the gate type must be selected carefully, the coommon gate tyeps are: direct gate, side gate, pin-point gate, sub gate,valve gate of hot runner etc. Among...view
Key points of plastic injection mold runner system
Jan 12, 2022The sub-runner is a transitional channel between the main runner and the gate, as the sub-runner is the longgest part of gating system, so it is very important to enhance the parts quality and improve...view
Design principles for wall thickness of plastic products
Jan 3, 2022The principles of wall thickness design for plastic parts are as follows: 1. Making the wall thickness even is the first principle of plastic part design, it can make filling, cooling and shrinking...view
The main design points of the design of the plastic mold pouring system
Jan 11, 2022The main runner is the part where the molten plastic first passes when it is sprayed from the injection nozzle, and it is coaxial with the injection nozzle, because of repeated contact and collision...view