Obtain the conductor (core wire) PVC compound according to the requirements of the process card, and conduct self-inspection on it, so that every head must be counted and every root must be carded to ensure that the process card and other related requirements are met.
In accordance with the requirements of the process card, production order and related process documents, put the shaft conductor (core wire) on the pay-off rack, and adjust the tension to make it meet the relevant requirements. Pour the PVC material into the hopper, and preheat and heat, exhaust and dehumidify. The specific heating temperature is 50-70℃ for PVC and 60-80℃ for PE.
Install the printing wheel, ink for spray ring and color wheel that meet the requirements of the process card according to the regulations.
Put the take-up traction rope into the wire storage rack and wind it, and open the top cover of the spark machine to prepare for the take-up.
Clean the inside of the machine head, add the filter net, close the flange of the machine head, and match the mold that meets the requirements of the mold fixture configuration or other requirements that can be referred to, and install the selected mold fixture into the machine head ( The specific requirements shall be implemented according to the operating requirements of the mold jig) to ensure that the machine head does not leak glue.
Disassemble the outer mold cover and clean it up (turn off the temperature of the eye mold first).
Disassemble and clean the guide tube and inner mold tube.
Install the guide tube and the inner mold tube and add lubricating oil.
Install the inner and outer molds and open the eye mold temperature.
Replace the printing wheel, pressing wheel, ink and install the wiper.
Adjust the ink to a moderate degree, and there should be no black in the white ink. Disassemble the head to clean up the old filter.
Open the hopper feed door, start the main engine, slowly extrude the rubber, observe the hardness and melting state of the extruded rubber, and adjust the temperature appropriately.
When the temperature is right, observe whether there are particles or impurities in the rubber compound and discharge the mixed color material.
Put a new filter into the honeycomb panel and lock the machine head.
Modulation
Naked eye adjustment (coarse adjustment): Use your eyes to see the concentricity of the inner and outer molds to adjust the mold.
Fine adjustment of the mold: Turn on the extruder to make it out of glue, and adjust the mold according to the direction of the flow of the rubber.
Fine adjustment of the mold: try to set the line to mark the production and adjust the mold, and adjust the mold according to the inconsistency of the insulation and the conductor.
The attaching force of the encapsulation, if the encapsulation is too tight or too loose, the distance between the inner and outer molds must be adjusted appropriately.
Trial pay-off, before the spool (splint, shaft), cut a section for the first roll inspection, and proceed to the normal extrusion stage after passing the test. Matters needing attention during normal pay-off: printing wheel, spray ring machine, spark machine, pay-off shaft, hopper, insulation concentricity, wire storage rack, and other equipment are operating normally, whether the outer diameter of the wire rod meets the relevant process and others Claim. When the wire is extruded, it must be fully cooled, and the surface of the wire must not be scratched or flattened. When the wire is taken up, it must be inspected by a spark machine, and the voltage level must be set according to the process regulations. The broken wire must be pulled out or marked in time.
The splint and shaft core must be selected according to the specified requirements for winding and axis, and packed with polyester tape. When changing rolls, check whether there are hidden quality hazards in eccentricity, appearance, printing, spray ring, outer diameter, etc.
Take up the wire into a roll: The number of the meter counter is set according to the standard length of each tie, and the special words should be marked on the label.
The cable tie must be tight, not too loose or too tight, and be packaged in a complete package with a yuli tape, and attached with a label with the operator, the operator’s seal and the date of manufacture.
The packaged wires are neatly placed on a pallet or packaged in a box.
The reel-mounted thread is attached with a label and wrapped with Youli tape after the reel.
