Design Tips of Vacuum Venting Mold

There 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 machine and radiotube, the mold design and manufacturing way will be different comparing with the regular mold;


图片1.png


There are many advantages of vacuuming venting, but there are some tips should be paid attention:

  1. The vacuuming mold ill e e nin ot which can not connect w the air, all venting slot will be sealed by sealing ring to isolate from outside;
  2. There will be a sealing ring on the parting surface of the vacuuming mold ( as shown in pictur 1 ), its function is to isolate the connection between the cavitynd the outsid;
  3. Except for the connecton between the gate an the cavity the rest of the mold is sealed to prevent air from being carried out during vacuuming;
  4. All ejector pin and ejector rod should be sealed by sealing ring ( as shown in picture 2 );
  5. All the inserts and the bottom of the insertneed to be sealed by sealing ring;
  6. A vacuum solenoid valve control switch should be added to the mold;
  7. After the mold is closed, the vacuum system starts to pumping function before mold injection.

图片2.png


Tags: Injection Mold | Injection Mold Supplier | Injection Mold Factory | Mold Factory | Mold Supplier | Injection Molding |
Related News about USM Injection Mold
  • The air trapping position in cavity and exhaust method

    The air trapping position in cavity and exhaust method

    Mar 2, 2022The air trapping in cavity is usually in the following places: 1. Thin-wall structure cavity, the end of melt flow; 2. The junction of two or more melts; 3. The last area where the melt in the cavity...view
  • The difference between full shot and short shot of gas-assisted injection molding

    The difference between full shot and short shot of gas-assisted injection molding

    Apr 13, 2022Gas-assisted injection molding can be divided into short shot and full shot. Short shot The short shot method is shown in picture 1, it is suitable for thick-walled plastic parts with low mold filling...view
  • Plastic injection mold cooling system design notice

    Plastic injection mold cooling system design notice

    Feb 14, 2022Design notice of designing the cooling system: 1. Normal molds can be quickly cooled to obtain a shorter molding cycle, and precision molds can be slowly cooled with a mold temperature thermometer; 2....view
  • USM Blogo Opening

    USM Blogo Opening

    Oct 27, 2021Hello everyone! Our blog is open today, it is very glad to have the opportunity to meet you here, welcome to visit us whenever you need. USM is a professional plastic injection mold and molding...view
  • Venting insert design of molded parts

    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
  • Insert pin of vengting design for molded parts

    Insert pin of vengting design for molded parts

    Mar 20, 2022Insert 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...view