1.Use:
This unit is suitable forcovering wire and cable sheath with PVC, PE, XLPE, LSZH and other thermoplasticcable materials by hot extrusion. It is designed and manufactured by the latestdouble-layer coextrusion and single / double-color extrusion process. It can beused for insulation coating of single / double-layer, single color and doublecolor wire and cable products. It is easy to operate and maintain.
2. The main technical parameters:
3.Main Component:
4. Structural description and technicalparameters of each main component:
4.1 PN630 Shaftless passivepay-off:
Model: Shaftless single-head passive feeding.
Applicable spool size: outer diameter 400mm～630mm Frame type: desktop, electric lifting andmanual clamping, with 5kg magnetic powder controller adjustable tension.
4.2 tension device:
Applicable wire diameter:φ0.5-φ10mm.
Structure: It is composed of two sets of guidewheels in the horizontal direction, which has the effect of straightening andtightening the core conductor.
4.3 50/25 extruder:
4.3.1 Screw rod diameter :Φ50mm
4.3.2 Screw rod length and diameter rate 25:1
4.3.3 Screw rod form High efficiency BM screw
4.3.4 Screwrod rotation speed 110r/min
4.3.5 Max glue amount PVC：70kg/h
4.3.6 Main motor powe 15kw（AC）motor
4.3.7 Screw rod material: 38CrMoALA, Surface nitriding treatment, nitriding depth 0.5-0.8mm, Surface hardness≥HV840
4.3.8 Machine barrel material: 38CrMoALA，Surface nitriding treatment, nitriding depth 0.5-0.8mm, Surface hardness≥HV940
4.3.9 The main motor is15kw AC motor and controlled by frequency control system control
4.3.10 Temperature Controller
The temperature controller adopts intelligent electronic display calculus temperature controller, the temperature can be automatically adjusted between 0-399 ℃, and the temperature control accuracy is ± 2 ℃
--The temperature controller adopts intelligent electronic display calculus temperature controller, the temperature can be automatically adjusted between 0-399 ℃, and the temperature control accuracy is high ± 2℃
---Number of temperature control sections: one section of machine head, one section of machine head lock, three sections of material barrel, cast aluminum heating ring and three DF series axial cooling fans
--- The fuselage is heated by electricity and cooled by fans.
--- The machine head adopts Haff type clamping, which is easy to operate.
--- The gear box is processed by hard tooth surface grinding process. The gears are quenched and tempered with 40Cr, the tooth surface is quenched and tempered with high frequency, and the surface hardness is hrc50-55. The shaft is quenched and tempered with 45? Steel, hb133.
4.4 35/20 extruder:
4.4.1 Screw rod diameter Φ35mm
4.4.2 Screw rod length and diameter rate 25:1
4.4.3 Screw rod form High efficiency BM screw
4.4.4 Screwrod rotation speed 120r/min
4.4.5 Max glue amount PVC：40kg/h
4.4.6 Main motor powe 7.5kw（AC）motor
---The screw material is 38CrMoAlA, with surface nitriding treatment, nitriding depth of 0.5-0.8mm, and surface hardness ≥ hv840
----The barrel material is 38CrMoAlA, with surface nitriding treatment, nitriding depth of 0.5-0.8mm, and surface hardness ≥ hv940
----The main motor is 7.5kW AC motor, which is controlled by Shenzhen sine frequency conversion speed regulation system.
---Temperature adjustment and heating
---- The temperature controller adopts intelligent electronic display calculus temperature controller, the temperature can be automatically adjusted between 0-399 ℃, and the temperature control accuracy is high ± 2℃
----Number of temperature control sections: one section of machine head, one section of machine head lock, three sections of material barrel, cast aluminum heating ring and three DF series axial cooling fans.
---- The fuselage is heated by electricity and cooled by fans.
---- The machine head adopts Haff type clamping, which is easy to operate.
-----The gear box is processed with hard tooth surface grinding technology. The gears are quenched and tempered with 40Cr, the tooth surface is quenched and tempered with high frequency, and the surface hardness is hrc50-55. The shaft is quenched and tempered with 45 # steel.
4.5 U7 free adjustable crosshead, (Double layer / double color /single-layer multifunctional machine head:
-----Wire diameter range: φ 0.2～5mm；
----The die is designed and manufactured by thelatest double-layer coextrusion and single / double-color extrusion process. Itcan be used for the insulation coating of single / double-layer, single color,double color and other wire and cable products with simple operation.
-----No adjustment, the head is made of high qualitydie steel skd136, and the surface is heat treated
----High temperature resistance, corrosionresistance, small coefficient of thermal expansion, high red hardness, wireconcentricity of more than 95% .
----The neck and head are heated by cast aluminumheater, cooled naturally, and regulated by thermocouple temperature controlfeedback
-----The front and back teeth trapezoidal threadadjustable Hafu clamp, the outside of Hafu is heated by cast aluminum heater,and the thermocouple temperature control feedback adjustment.
---- Equipped with a set of debugging mold (moldcore, mold sleeve) ---- Features: it is notnecessary to remove the core rod when replacing the mold core and mold sleeve.After adjusting the eccentricity at low speed, the concentricity will not change when increasing to the normal production speed, and the eccentricity is required to be less than 15%. After adjusting the machine at low speed and increasing the speed synchronously, the outer diameter deviation is within thestandard tolerance range of cable products.
4.6 Automatic feeding anddrying system:
--Applicationscope: 50kg drying, 100kg / h feeding, equipped with cable overload protectiondevice.
--The hopper seat is made ofstainless steel with beautiful appearance and compact structure.
4.7 Outerdiameter tester:
--Model:ddm3020 automatic tracking feedback control type.
--Measuringrange of wire diameter: φ0.2 ～φ25mm.
--Controller:in type (fixed to the main electrical control box).
--Thestand-alone detector holder is attached. --Features: with automaticfeedback function, remote display.
4.8 1.5+8 meter stainless steelcooling water tank:
--Front water tank:
--Model: child mother slot type.
--Structure: the mother tank is of water tank type, and the sub tank is retractable, with a total length of about 1.5m.
--Material of tank body and water tank: 1.5mmt stainless steel plate
--Cooling mode: room temperature water immersion
--8m main cooling water tank:
--Model: single layer.
--Total length: about 8m.
--Tank body size and material: stainless steel
--Structure: 2x 3-meter connection.
--Cooling mode: room temperature water immersion.
--The outlet end is equipped with an efficient blowing and wiping device.
4.9 500 mm double wheel capstan:
--Model: double wheel U-shaped 4-groove.
--Leading wheel: φ500mm, aluminum alloy material, anode hardening treatment of wheel surface.
--Drive: motor is 4kw, AC motor + frequency converter. --Drive: timing belt drive,stepless speed change.
4.10 12m coiling storage rack:
--Model:horizontal.
--Materialof track: cold drawn square steel, hard chrome after quenching and tempering,double track up and down.
--Thestorage capacity: About 210m.
--Thetrack length is about 12m.
--Itis made of aluminum alloy with a diameter of 250 mm, and the aluminum groove ismade of 10 mm.
--Drive:2HP × 4P AC motor + reducer + 10kg-m magnetic powder tension controller. --The displacement detectionsignal: the whole process signal detection of precision angle detector
4.11 High frequency sparktesting machine:
-Model:st-15a.
--Themaximum wire diameter:φ 0.2 ～φ10mm.
--Themaximum line speed: 300m / max.
--Voltagetest: 15kV / max. --Length of electrode: 280mm.
4.12 PN630 double reel take-up and arrange line frame:
4.12.1 Take-up bobbin size PN400-630
4.12.3 Traverse max diameter Φ15mm
4.12.4 Max take-up speed 330m/min
The take-up motor: 4kw variable frequency torque motor control, dual motor free switching control, automatic wire arrangement, and manual adjustment of winding pitch.
4.13 Electronic control system:
--Power supply: three phase five wire system, 380 V(± 10%), 50 Hz, single phase control voltage 220v.
--The operation system of the whole machine iscontrolled by Schneider PLC, which can be controlled by single action orlinkage speed regulation. And through the Schneider 10.1 inch touch screenvisual operation.
--The communication control is adopted between PLCand frequency converter, which has higher precision and faster responsecompared with analog speed control; meanwhile, PLC has Ethernet interface,which enables users to monitor and control remotely.
--The whole machine is a dual control system: thetouch screen sets analog speed regulation and manual self reset knob speedregulation. The parameters can be freely set and adjusted through the touchscreen, and can also be controlled by the self reset knob.
--The main machine and traction motor of theextruder adopt domestic high-quality brand AC motor, which is controlled bysinusoidal frequency conversion speed regulation system in Shenzhen. Thetemperature control instrument adopts the latest generation of intelligentelectronic display calculus temperature controller with temperature controlaccuracy of ± 2 ℃.
--The panel is equipped with various necessarycomponents such as instruments, indicators, switches, etc., with completeprotection functions for overload, overheating and over-current,
--The low-voltage components of the whole machineare made of top domestic brands (Chint or Schneider), with advantages of stablestart-up, operation and stop, energy saving and consumption reduction.
--The control box is made of high-quality anodizedaluminum profile and aluminum die-casting corner parts, with simple and stableappearance and easy operation. Dust filter device is installed in the maincontrol box to prevent dust from affecting the service life of electrical componentsin the cabinet. --The safety protection ofthe production line meets the national requirements.
