The order of the first run of the extruder is as follows.
(1) clean up the equipment on the production line of environmental hygiene.
(2) cleaning equipment on the dust, cleaning equipment.
(3) Check the quality of the lubricating oil in the lubricating tank and carry out proper treatment (filter or replace according to the quality of the lubricating oil).
(4) cleaning the lubrication parts and delivery pipeline, in addition to clean oil cups dirt.
(5) inventory, cleaning extruder production tools, placed neatly.
(6) check the barrel of the inlet and outlet oil seal is intact; clear the dirt inside the hopper, do health work.
(7) Check the tightening connection screws for loosening and, if appropriate, tightening.
(8) clear the control box and the instrument box dust; check the line connection is tight; transmission test, detection motor, electric heating device and electronic control parts of the insulation resistance, should comply with the relevant provisions.
(9) test water, gas and oil pipeline is smooth, check for leaks.
(10) pull the V pulley, screw rotation should be flexible, no block phenomenon.
(11) to clear the mold on the mold, check the mold parts should be smooth without rust phenomenon. And then assembled on the barrel (if you need to add filters and manifold, the first two parts should be installed in the barrel, and then loaded mold).
(12) After the mold is installed, adjust the gap between the die and the mandrel to be evenly.
(13) Check the quality of raw materials for production (check whether the grade of the material is consistent with the process requirements, whether the material is uniform, whether the material is wet, whether there is impurities, etc.).
(14) air transfer point car test run. Start the lubricating oil pump, work 3min and then low-speed jog screw rotation, check whether there is an exception, everything is normal after the closure of the oil pump.
(15) barrel, forming mold heating heating. To meet the requirements of the temperature after heating temperature of not less than 1h.
(16) with a mercury thermometer to detect the barrel and mold parts of the mold temperature, calibration control box on the instrument display temperature and mercury thermometer measured temperature.
(17) check the test feeding device, hopper filled with raw materials.
(18) once again pull V pulley rotation, should be easy and flexible, no block phenomenon.
(19) start the lubricating oil pump, work 3min, check the lubricating oil spray lubricants are in place.
(20) low-speed drive screw rotation motor, observe the voltmeter, ammeter pointer swing is normal, everything is normal after the start feeding.
(21) to the barrel of the material, the initial production of feeding to be less and uniform, at any time to observe the ammeter pointer swing, should be within the allowable rating (allowing instantaneous overload).
(22) mold mouth discharge, the first out of the extruded incomplete plasticizer and dirt, check the quality of raw materials, plastic, as appropriate appropriate to adjust the barrel and mold mold temperature, according to the operation of the extruded tube, Adjust the gap between the die and the mandrel as long as the tube runs straight.
(23) Extruder production line on the auxiliary drive (referring to the tractor and cutting machine).
(24) Stop the screw rotation, install the sizing sleeve, air plug, connect the compressed air (used when the internal pressure method is sizing) or turn on the vacuum pump pipe (vacuum sizing).
(25) low-speed drive screw rotation motor, extruded tube into the cooling cooling tank.
(26) extruded tube by the tank cooling stereotypes, tube samples, the detection of pipe production quality.
(27) According to the results of pipe inspection, the process temperature, air pressure, vacuum degree, cooling water and traction speed of the barrel and the mold can be adjusted appropriately to affect the quality of the pipe forming quality so as to meet the molding requirements.
(28) pipe quality to meet the requirements should be gradually increased after the screw speed, until the normal operation of the production of pipe products.
(29) pipe production extrusion work into the normal operation, the operator should often inspect the bearing parts of the temperature, should not exceed 45 ℃; see the power supply equipment changes in the current; the transmission parts of the sound is running; pipe operation is smooth ; The air supply, water pipeline whether the leakage phenomenon.