500T Four Column Hydraulic Press for Deep Drawing SS Food Containers

Complete Technical Data

Capacity

• Nominal Force: 500 Tons (5000kN) of primary downward ram force to overcome the high tensile strength and work-hardening of stainless steel.
• Hydraulic Cushion Force: 200–250 Tons of adjustable blank-holder force to precisely regulate material flow and prevent wrinkling during deep draws.

Structural Design

• Heavy-Duty Four-Pillar Architecture: Utilizes four ultra-rigid, precision-ground columns to maintain perfect parallelism between the upper punch and lower die.
• Extended Guide Bushings: Long, self-lubricating slider guides counteract severe off-center forces generated during asymmetrical drawing phases.

Frame Type

• Four-Column Open Style: Provides unrestricted 360-degree visual and physical access to the die workspace, streamlining manual setups and robotic automation.
• Finite Element Analysis (FEA) Optimized Frame: Heavy steel plates are welded, stress-relieved, and machined to ensure negligible structural deflection under full tonnage.

Hydraulic System

• High-Pressure Servo-Driven Hydraulics: Integrates high-efficiency variable displacement pumps paired with servo motors for energy savings and highly responsive pressure adjustments.
• Dedicated Cushion Circuit: Separate independent hydraulic loop controls the blank holder cushion to maintain stable pressure profiles throughout the entire stroke.

Main Ram Stroke

• Maximum Travel: Long stroke capability (typically 800mm–1000mm) designed specifically to accommodate tall cylindrical containers and deep-drawn keg preforms.
• Digital Stroke Control: Employs high-resolution linear scales providing 0.05 mm position tracking for precise bottom dead center (BDC) repeatability.

Working Hydraulic Pressure

• Max Operating Pressure: Rated at a robust 25–31.5 MPa (250-315 bar) to generate massive forming forces within a compact cylinder footprint.
• Closed-Loop Pressure Regulation: Proportional pressure transducers continuously adjust system pressure via the main PLC controller.

Daylight Gap

• Maximum Open Height: Large vertical clearance (typically 1200mm–1500mm) providing the required space for deep drawing punches, blank holders, and deep part extraction.
• Minimum Shut Height: Configured to match standard multi-stage deep drawing and ironing mold dimensions.

Approach Speed

• Fast Downward Velocity: Rapid approach speed up to 150–200 mm/s to dramatically minimize non-productive open cycle times.
• Proportional Deceleration: Smooth, automated deceleration curves right before punch-to-blank contact to eliminate material impact shock.

Pressing / Drawing Speed

• Multi-Stage Drawing Velocity: Micro-adjustable range (typically 4–12 mm/s) engineered to match the plastic flow limits of stainless steel.
• Constant Variable Flow Control: Maintains steady tonnage delivery at precise speeds to prevent localized thinning, tearing, or necking.

Return Speed

• Fast Retraction Velocity: High-speed upward stroke (up to 120–160 mm/s) to quickly clear the working envelope for part extraction.
• Pre-Return Decompression: Programmable decompression control dampens the release of high-pressure oil, protecting valves and pipes from hydraulic shock.

Bed / Platen Size

• Bolster Dimensions: Large working table area (e.g., $1400\text{mm} \times 1200\text{mm}$) sized perfectly for multi-stage progressive drawing or concentric circular dies.
• Machined Concentric Rings & T-Slots: Features precise T-slots and center bore options for seamless integration and alignment of lower cushion pins.

Columns

• Pillar Construction: High-alloy forged steel columns, induction-hardened and coated with hard chrome for a wear-resistant, low-friction surface.
• Threaded Locking Nuts: Heavy-duty tie-rod style pre-stressed locking nuts ensure the frame remains geometrically square over decades of continuous operation.

Working Envelope

• Clearance Dimensions: Maximized spacing between pillars to easily accommodate automated pick-and-place blank feeders and finished container extractors.
• Optimized Ergonomics: Lower bolster height configured for smooth conveyor-line integration, allowing clean inline parts transport.

Control System

• Advanced PLC Integration: Industrial-grade central processing unit (e.g., Siemens S7-1500) executing real-time logic control for all hydraulic actions.
• Intelligent HMI Display: Multi-touch screen interface featuring pressure/stroke curve graphing, storage for hundreds of die recipes, and advanced fault diagnostics.

Main Motor Power

• High-Capacity Power Pack: Driven by high-efficiency dual or triple motor setups (typically totaling 45kW–75kW) optimized for heavy continuous operation.
• Energy-Saving Servo Setup: Power consumption scales dynamically with the demand of the cycle stage, reducing electricity usage up to 30–50% during idle times.

Valves & Hydraulics

• Logic Cartridge Block Manifolds: Manifold blocks minimize pipe connections, significantly lowering the risk of oil leaks while ensuring instantaneous valve response.
• Premium Global Brands: Utilizes top-tier valves (such as Rexroth, Vickers, or Parker) to guarantee long-term component availability and reliable sealing.

Automation

• Robot & Destacker Ready: Pre-installed Profinet/Ethernet communication interfaces for seamless integration with blank destackers and robotic transfer arms.
• Pneumatic Part Ejectors: Auxiliary air blast and mechanical stripping control circuits integrated directly into the press cycle logic.

Safety Features

• Type 4 Safety Light Curtains: Dual-sided light barriers guard the loading area, instantly halting all machine movements if the perimeter is breached.
• Dual-Channel Interlocking Valves: Redundant hydraulic safety valves prevent unauthorized ram descent in the event of an electrical failure.
• Anti-Drop Mechanical Lock: Features a robust locking bar or slide safety catcher that mechanically blocks the main slide from descending during maintenance.

SM 500 HP — Model Specifications

• Nominal Force: 5000 KN
• Maximum Hydraulic Pressure: 25 MPa
• Max Opening Height of the Slider: 1500 mm
• Max Stroke of the Slider: 900 mm
• Effective Bed Size: 1400 × 1400 mm
• Slider Down Speed: 150 mm/s
• Slider Pressing Speed: 10–18 mm/s
• Slider Return Speed: 180 mm/s
• Ejector Cylinder Nominal Force: 500 KN
• Stroke of the Ejection Cylinder: 300 mm