১. মৌলিক পণ্য তথ্য

Q1: What is AFC‑780 Four‑Column Hydraulic Cutting Machine?

A1: AFC‑780 Four‑Column Hydraulic Cutting Machine is 80‑ton heavy‑duty hydraulic die‑cutting machine. It adopts double‑cylinder & double‑crank‑connecting‑rod automatic balance mechanism and four‑column rigid guide frame. The upper platen switches to slow‑cut automatically when touching die‑cutter. Equipped with central automatic lubrication system, optional PLC micro‑computer control. It performs multi‑layer punching for various flexible materials with die‑cutting tools, widely used in shoe‑material, luggage and handbag industries as downstream cutting process after laminating, fabric‑inspection and rewinding.
Extension: Compared with ordinary gantry cutting machine, this four‑column model has higher rigidity and 80‑ton large pressure, better for thick‑material and multi‑layer stack cutting. Heavy machine weight requires load‑bearing floor.

Q2: What are the core technical parameters of AFC‑780 Four‑Column Hydraulic Cutting Machine?

A2:

1.Model No.: AFC‑780
2.Max cutting force: 80T
3.Cutting stroke: 50‑180mm
4.Motor power:5HP / 3.75KW
5.Hydraulic oil filling quantity:120kg
6.Worktable dimension:700×1600mm
7.Machine dimension:2330×1150×1510mm
8.Packing size:2360×1200×1650mm
9.N.W:3200kg；G.W:3400kg
Extension: Avoid continuous full‑80T operation which accelerates cylinder seal aging. Stroke setting rule: platen lifting height shall be slightly larger than total thickness of die‑cutter plus stacked materials.

Q3:What are the main features of AFC‑780 Four‑Column Hydraulic Cutting Machine?

A3:

1.Double‑cylinder plus precise double‑crank‑connecting‑rod automatic balance mechanism ensures even force distribution, stable powerful cutting force, reduces shaking & deformation and improves finished‑product yield.
2.Four‑column rigid frame sustains long‑time heavy‑duty production, minimizes cutting offset error and extends service life.
3.Auto slow‑cut when platen touches die‑cutter. Consistent dimension between top‑layer and bottom‑layer workpieces during multi‑layer stacking cutting, reduce dimension‑offset defects.
4.Max 80‑ton hydraulic output, suitable for multi‑layer punching of flexible materials with various thickness and hardness.
5.Central automatic lubrication system maintains moving pairs, preserves machine precision and reduces component wear.
6.Optional PLC integrated control; parameters such as cutting pressure and stroke can be adjusted according to process.
7.Safety operation logic: cutting action triggered only by pressing two‑hand buttons simultaneously; equipped with counter, cutting‑depth controller, lifting‑height controller; dual‑protection of brake die‑lifting and emergency stop.
Extension: Die‑cutter sharpness directly affects cutting quality and machine load. Blunt die causes insufficient pressure and abnormal noise. For heavy‑duty hydraulic machine, wait for full hydraulic‑system cooling before maintenance.

২. প্রযোজ্য শিল্প ও উপকরণ

Q4:What products and materials can AFC‑780 Four‑Column Hydraulic Cutting Machine process?

A4:Suitable for punching various flexible synthetic materials, including bag fabrics & linings, shoe soles, shoe uppers, leather, handbags and golf‑bag accessories, cut by customized die‑cutting tools.
Extension: Only for flexible die‑cuttable materials. Not for metal or rigid hard‑plastic workpieces. Do not stack unlimited layers; excessive layers may cause incomplete cutting on bottom layer.

Q5:What production scenarios is AFC‑780 Four‑Column Hydraulic Cutting Machine mainly used for?

A5:Applied in shoe factories, handbag & luggage factories and sports‑goods processors for flexible‑material die‑cutting procedure. Up‑stream can connect laminator, AM‑635 inspection rewinder, AM‑170BD rewinder. Punched parts go to sewing & assembly process.
Extension: Suitable for medium‑large‑batch multi‑layer stacking die‑cutting; also support small‑batch sampling. Not for single thin‑material high‑precision engraving processing.

三. Utility, Installation & Commissioning

Q6: What utility conditions are required for AFC‑780 Four‑Column Hydraulic Cutting Machine?

A6:Power supply: three‑phase power, reliable protective earthing is mandatory. No compressed‑air source required. Floor shall bear load up to 3.4 tons. Keep workshop well‑ventilated; keep hydraulic oil away from open fire. Reserve space for operation, die‑cutter handling and maintenance.
Extension: Heavy‑weight machine, verify doorway dimension and floor load‑bearing before delivery. Hydraulic oil is flammable; basic fire‑fighting equipment shall be equipped in workshop.

Q7: What are requirements for installation & placement of AFC‑780 Four‑Column Hydraulic Cutting Machine?

A7:Place machine on flat hard load‑bearing floor and level whole unit. Reserve surrounding clearance for die‑cutter lifting‑handling and maintenance. Keep away from high‑temperature & open‑fire; no obstacles above worktable.
Extension: Do not place tight against wall for maintenance access. Reserve space for heavy die‑cutter handling.

Q8:What is complete test‑running operating procedure for AFC‑780 Four‑Column Hydraulic Cutting Machine?

A8:

1.Confirm reliable power earthing; clean impurities inside oil tank, fill hydraulic oil up to about 80% tank volume. Make motor rotation direction consistent with arrow mark on oil‑pump housing; level whole machine.
2.Clean worktable surface, place die‑cutter at center position of worktable.
3.Enter setting mode, platen moves slowly down close to die‑cutter; operate stroke‑setting handle for 2 reciprocating cycles, lock handle and exit setting mode.
Extension: Do NOT place hands between platen and die‑cutter during die‑setting.
4.Adjust cutting‑depth controller and lifting‑height controller. Platen lifting height shall be slightly larger than total thickness of die‑cutter plus stacked material.
5.Load stacked test material, press two‑hand operation buttons simultaneously for trial cutting. Check whether parts are fully cut‑through; fine‑tune cutting depth. Start mass‑production only after sample acceptance.
6.Counter counts automatically during mass‑production. Press brake button for instant platen lifting when material is jammed; press main emergency‑stop for severe abnormality.
7.Shutdown for maintenance: cut off main power; wait until hydraulic cylinder system fully cools down; place support block between platen and worktable before repairing.

Q9: What precautions for stroke and cutting‑depth adjustment?

A9:Lifting height only needs to be slightly higher than total thickness of die‑cutter plus material. Excessive stroke shall be avoided to reduce idle‑run loss. Set cutting‑depth just for full material penetration; do not over‑press to prevent over‑impact on die‑cutter and machine. Re‑perform die‑setting procedure after die‑cutter replacement.
Extension: Re‑check depth and stroke parameters when stacked‑material thickness changes; do not reuse old parameters directly.

৪. মেশিনের গঠন ও উপাদানসমূহ

Q10:What are the 5 core assemblies of AFC‑780 Four‑Column Hydraulic Cutting Machine?

A10:5 modular core assemblies:
1.Four‑column frame & worktable assembly; 2.Double‑cylinder crank‑connecting‑rod actuator unit; 3.Hydraulic pump & oil‑circuit assembly; 4.Central automatic lubrication assembly; 5.Electrical control & operation system.
‑Four‑column frame & worktable assembly: heavy‑duty four‑column frame, worktable, upper platen.
‑Double‑cylinder crank‑connecting‑rod actuator unit: double‑cylinder assembly, double‑crank‑connecting‑rod balance mechanism, guide‑rod components.
‑Hydraulic pump & oil‑circuit assembly: oil pump, oil tank, solenoid‑valve group, pressure‑regulating valve, pipe joints, oil‑seal sealing parts.
‑Central automatic lubrication assembly: auto‑lubrication oil supply pipeline and lubrication points.
‑Electrical control & operation system: electric‑control box, two‑hand operation buttons, brake / emergency‑stop button, counter, depth / stroke controller, optional PLC module.
Extension: Wearing‑parts list: cylinder oil‑seal & O‑ring, high‑pressure oil pipe, solenoid‑valve coil, relay. Spare‑part stock is recommended for less downtime.

Q11: What is the function of double‑crank‑connecting‑rod automatic balance mechanism?

A11:Cooperate with double cylinders to balance force on upper platen and eliminate platen tilt & offset. Ensure dimension consistency for multi‑layer cutting, reduce machine shaking‑deformation and protect frame and oil cylinders.

Q12: What are functions of two‑hand synchronous cutting buttons?

A12:Safety‑protection mechanism. Cutting action is triggered ONLY when both buttons are pressed simultaneously, to prevent hand‑crush injury caused by single‑hand mis‑operation and improve operation safety.

五.Safety, Maintenance & Troubleshooting

Q13: What safety notes for AFC‑780 Four‑Column Hydraulic Cutting Machine?

A13:

1.Machine must be reliably earthed for three‑phase power supply against electric‑shock hazard.
2.Never put hands between platen and worktable while platen moves down, to avoid crush injury.
3.For maintenance & disassembly: cut off main power; wait for full hydraulic‑cylinder cooling; place solid support block between platen and worktable.
4.Do not remove protective covers. Machine shall be operated by trained personnel. Do NOT operate under fatigue or alcohol influence.
5.Keep hydraulic oil away from open fire. Stop machine for troubleshooting when oil leakage occurs; do not run with oil‑leak fault.
6.Press brake button first to lift platen for jam‑up; use main emergency‑stop under critical situation.
Extension: Keep body parts away from under‑platen area during die‑setting. Operators shall not wear loose sleeves or gloves.

Q14: What is maintenance schedule for AFC‑780 Four‑Column Hydraulic Cutting Machine?

A14:Per shift: Check status of central automatic lubrication system; clean debris on worktable; test two‑hand button, brake and emergency‑stop safety functions; inspect hydraulic oil leakage. Weekly: Inspect oil‑pipe joints and cylinder oil‑seal for leakage; check die‑cutter sharpness; check all fasteners. Every half‑year: Fasten all electrical terminals; inspect solenoid‑valve and relay performance; check wear of guide moving pairs. Yearly: Completely replace hydraulic oil and clean oil‑tank & filter; perform full machine overhaul. Evaluate wear of oil cylinder, oil pump and sealing parts; replace aged & worn spare‑parts. Extension: For long‑term shutdown, lower platen to low position and apply dust‑proof protection.

Q15: : Common faults and troubleshooting guidelines?

A15:

1. No power & indicator lamp off: burnt transformer fuse; emergency‑stop locked. Replace fuse and reset emergency‑stop.
2. Indicator lamp on but motor fails to start: tripped protection switch; burnt main‑control contactor contacts; damaged motor. Troubleshoot item‑by‑item.
3. Motor runs but no cutting action: wrong die‑setting‑switch position; reversed oil‑pump rotation; loose wire terminals; burnt solenoid‑valve coil or stuck valve‑core; loose stroke handle. Reset and check each item.
4. Insufficient cutting pressure, incomplete penetration: excessive stacked layers; insufficient cutting‑depth setting; clogged oil filter; worn oil pump. Reduce stacking layers, adjust parameters, clean or replace spare‑parts.
5. Oil leakage: aged cylinder oil‑seal; loose high‑pressure pipe joints. Replace oil‑seal and tighten joints.
6. Abnormal loud oil‑pump noise: worn internal pump parts; clogged filter leading to insufficient oil suction; damaged bearing or oil‑seal. Replace worn components.
7. Slow cutting speed & continuous pressure drop: defective solenoid valve; burnt‑out relay; aged cylinder seals; deteriorated hydraulic‑oil viscosity. Repair electric parts or replace hydraulic oil & seals. Extension‑added frequent site faults:
8. Big dimension deviation between top‑bottom layers in multi‑layer cutting: inspect double‑crank‑connecting‑rod balance mechanism; check four‑column guide clearance; verify auto slow‑cut function is active.
9. Counter does not count: Inspect counter‑sensor wiring; clean oil stain on sensor surface.

六.Model Selection

Q16:Which customers are suitable for AFC‑780 Four‑Column Hydraulic Cutting Machine? 

A16:Recommended for shoe‑making factories, handbag‑luggage factories and sports‑goods processors. Require 80‑ton large pressure for multi‑layer die‑cutting of leather, shoe‑material and luggage flexible materials. Can be matched upstream with laminator, fabric‑inspection rewinder and rewinding machine.
Extension:
✅ Suitable scenarios: die‑cutting for thick‑material & multi‑layer stacking; require high machine rigidity to reduce cutting deviation; medium‑large‑batch die‑cutting production.
❌ Unsuitable scenarios: processing metal or rigid hard plastic; only low‑pressure single thin‑sheet cutting; workshop floor cannot bear 3.4‑ton load.
Alternative suggestion: Choose ordinary gantry‑type cutting‑machine for small thin‑part processing to reduce investment.