Production Process Sequence of Extrusion Molding Wire Mesh
DATE：2022/11/1 8:26:19 / READ： / SOURCE：This station
Production Process Sequence of Extrusion Molding Wire Mesh
Polyethylene resin pigment and some auxiliary materials → evenly mixed → extruded raw materials become molten → wire mesh is moldedBlank → mesh blank is stretched and shaped in water → traction → cylinder mesh is split into flat mesh (or not) → coiling
If the wire mesh needs to be stretched, the drawing hot water tank shall be added after the traction process, and the coiling process shall be opened after the sizing heat treatment.
The production process sequence of plastic round screen extrusion molding is shown in Figure 10-2.
Figure 10-2 Equipment for Plastic Round Mesh Extrusion Molding
1 - Extruder; 2 - Forming mould; 3 - Stretching cylinder; 4 - Water tank; 5, 7-traction roll;
6 - Sectional spreading device; 8 - Guide roller; 9 - Coiler
Figure 10-3 Equipment for Plastic Flat screen Extrusion Molding
1 - Extruder; 2 - Forming mould; 3 - Cold air cooling device; 4,6,8-traction roll;
5 - Water tank; 7 - Oven; 9 - Coiler
The equipment for flat screen extrusion molding is shown in Figure 10-3
Equipment conditions
① The extruder can be a universal single screw extruder for extruding polyethylene resin. L/D>20:1.
② The mold structure for forming cylindrical screen by forming mold is shown in Figure 10-4.
The mold structure for forming flat screen is shown in Figure 10-5.
When the cylindrical screen forming die is working, the inner die 10 and the outer die 9 are used to synthesize the screen at the discharge port
Fig. 10-4 Structure of round mesh forming die The die reverses each other to form the mesh,
1 - Connecting neck; 2 - Mold core; 3-Chain wheel; 4-Spindle;, 5-phantom; 6 - Inner core; 7 - Drive plate of internal die The internal die passes through the shaft 4 and the chain 8 - Drive ring of external die; 9 - Outer die; Exit 10 internal mold; 11 - Connector
Wheel 3 drives rotation; The outer die and the sprocket are integrated and fixed with the rotation ring 8, and rotate in the chute; The outer circle of the core mold 2 is provided with a conical spiral groove, which can evenly spread the molten materials into the mold.
The upper and lower templates in the flat screen forming mold are coat hanger type molten material flow channels. The upper and lower die is driven by the eccentric wheel shaft, which can move left and right on the rack to complete the forming of flat screen wire and the bonding of flat screen.
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