Method for manufacturing a peek insulated wire

A method for manufacturing a PEEK insulated wire, comprising the steps of:

• preparing a PEEK material by drying the PEEK material for a period of time to completely remove moisture therefrom;
• paying off a core wire by controlling the core wire to run at a predetermined tension value;
• pre-heating the core wire before the core wire comes into contact with the PEEK material;
• plasma cleaning the core wire;
• extrusion coating the core wire by installing a matching pressure extrusion die on a head of an extruder according to specifications of the PEEK insulated wire to be produced, and extruding the PEEK material using vacuum extrusion to form the PEEK insulated wire;
• cooling the PEEK insulated wire;
• online inspecting, by an eccentricity detection device (2), an eccentricity of a coating film on the PEEK insulated wire;
• and
• taking up the PEEK insulated wire;
• wherein the eccentricity detection device (2) comprises a fixed frame (21) through which the PEEK insulated wire is configured to pass, wherein an inner circumferential surface of the fixed frame (21) is provided with an upper coating thickness gauge (22), a lower coating thickness gauge (23), a left coating thickness gauge (24), and a right coating thickness gauge (25) on top, bottom, left, and right sides thereof, respectively, and wherein the upper (22), lower (23), left (24), and right (25) coating thickness gauges are located on a same vertical plane and are respectively configured to measure coating thicknesses on the top, bottom, left, and right sides of a same cross-section of the PEEK insulated wire;
• wherein, in the extrusion coating step, before the core wire enters the extruder, a running position of the core wire is adjusted by an eccentricity adjustment device (1) to ensure that the core wire remains at an extrusion center of the pressure extrusion die;
• wherein the eccentricity adjustment device (1) comprises a base frame (11), a left limit roller (111) and a right limit roller (112) configured to laterally limit the core wire, and an upper limit roller (113) and a lower limit roller (114) configured to vertically limit the core wire, wherein a distance between the left limit roller (111) and the right limit roller (112) is adjustable, and a distance between the upper limit roller (113) and the lower limit roller (114) is adjustable;
• wherein the base frame (11) is provided with a horizontal movement unit (12) and a first driving member (121) configured to drive the horizontal movement unit (12) to move along a width direction of the base frame (11), and wherein the left limit roller (111) and the right limit roller (112) are arranged on the horizontal movement unit (12);
• and
• wherein the base frame (11) is provided with a vertical movement unit (13) and a second driving member (131) configured to drive the vertical movement unit (13) to move up and down, and wherein the upper limit roller (113) and the lower limit roller (114) are arranged on the vertical movement unit (13).