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注塑模的排氣系統是由模腔和注塑體系的廢氣組成，它的組成成分是：模腔內的氣流、通道內的氣流、溫度較高的塑料中的濕氣。

濟南注塑模具的放氣模式有：

①分模面（含開式通風孔）
Parting surface (including open vent)

②鑲嵌表面；
② Mosaic surface;

③推桿或推管與內模具嵌件之間的接觸面；
(3) the contact surface between the push rod or push tube and the internal mold insert;

④側向抽心裝置的排氣；
(4) lateral core pumping device exhaust;

⑤在困氣點增加一根排氣管或插頭；
⑤ Add a exhaust pipe or plug at the trapped gas point;

⑥通風的鋼質廢氣；
⑥ Ventilated steel exhaust gas;

⑦閥門的排放。
⑦ Valve discharge.

1.排氣口僅允許氣體排放，不允許塑膠溶解物外泄。
1. The exhaust port only allows gas discharge, not plastic dissolute leakage.

2.由于不同的塑料，其排氣孔的深度會因其粘性而變化。
2. Due to different plastics, the depth of the vent will vary due to its viscosity.

3.在型腔中應設置排氣孔，在流道、冷液室中也應設置排氣孔，以減少在澆鑄體系中的氣體流入模腔。

3. Exhaust holes should be set in the cavity, and exhaust holes should also be set in the flow passage and cold liquid chamber to reduce the gas inflow into the mold cavity in the casting system.

4.排氣口必須與模具框架相連通，特別是在經過插頭、排氣插頭或排氣插頭時，必須要小心。
4. The exhaust port must be connected to the mold frame, especially when passing a plug, exhaust plug or exhaust plug, care must be taken.

5.盡可能采用銑床，處理后用320號砂紙進行打磨，以消除刃痕，盡可能不要用研磨機來處理，研磨機的表面太平坦、太平滑。
5. Use milling machine as far as possible, grind with no.320 sandpaper after treatment to eliminate edge marks, do not use grinding machine as far as possible, the surface of grinding machine is too flat, too smooth.

6.在分型面上，通常在固定模嵌件上，應在型腔的一邊。

6. On the parting surface, usually on the fixed die insert, should be on the side of the cavity.

7.在通風管道的兩邊都要進行45度的切削。
7. 45 degree cutting should be made on both sides of the ventilation duct.