The exhaust grooves of plastic molds are often set in two stages. The first-level exhaust slots are mainly airtight plastics that only discharge air, while the second-level exhaust slots are often deeper to facilitate rapid exhaust of gas. The most difficult to clean the exhaust groove and the most easily overlooked is the exhaust groove between the inserts and other immovable parts. This must be removed regularly for cleaning.
The parting surface of the plastic mold is where the mold gas is discharged. If the parting surface is flat, grinding is used. The parting surface after grinding is well bonded. The gas in the cavity should not be exhausted. An exhaust groove must be opened on the side of the cavity.
If the parting surface is a curved surface or a slanted surface, due to the accuracy of processing, it can be directly exhausted without processing an exhaust groove on the parting surface of the plastic mold.
After injection molding, many plastics tend to leave a small amount of residue on the surface of the exhaust groove of the plastic mold, similar to plastic powder. When the time is long, after a long period of time, these residues will block the mold exhaust groove, making it difficult to exhaust the gas. Therefore, the exhaust groove of the plastic mold should be cleaned in time.
The exhaust groove of the mold is relatively easy to clean on the parting surface and can be wiped off directly. The exhaust grooves on the surface of the push rod or the slanted top are also relatively easy to clean. They tend to be cleaned up due to their own movement.
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