Product Overview
The Industrial Paper Unloader (also referred to as a hydraulic paper lift table or paper stack unloader) is a heavy-duty material handling machine engineered for paper mills, commercial printing plants, and packaging converting facilities. It automates the transfer, lifting, and alignment of heavy paper stacks—weighing up to 3,000 kg—between pallets and processing equipment such as guillotine cutters and printing presses.
By replacing manual palletizing and feeding, this unit eliminates heavy lifting injuries, prevents edge damage to sensitive paper stocks, and maintains a continuous production tempo. Built with a rigid structural steel frame and precision hydraulic actuation, it is engineered for continuous multi-shift operation in demanding industrial environments.
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![LD-2 Paper Unloader]()
LD-2 Paper UnloaderDifferent cutting systems are suitable for production lines with various combinations of cutting processes.Featuring diverse configurations and centered around programmable paper cutters, these -
![LD-4 Paper Unloader]()
LD-4 Paper UnloaderThese systems come in diverse configurations, mainly consisting of programmable paper cutters equipped with auxiliary equipment such as elevators, paper joggers and paper unloaders. They can
Rigid Scissor Lift Architecture:
Constructed from heavy-gauge structural steel profiles, preventing structural deflection under eccentric loads up to 3,000 kg.
Contamination-Free Hydraulics:
Equipped with chrome-plated ground piston rods and high-integrity multi-lip oil seals, preventing hydraulic fluid leaks that can ruin sensitive paper stocks.
Precise Leveling Control:
Closed-loop hydraulic or PLC-controlled positioning ensures the platform stops flush with cutter tables within a +/-1 mm tolerance.
Integrated Safety Systems:
Features mechanical safety maintenance struts, emergency stop pushbuttons, and electro-sensitive perimeter safety edges compliant with industrial safety directives.
Modular Roller / Flat Table Tops:
Available with motorized/idle roller beds or smooth steel plate tops to match existing facility conveyor integration.
Technical Specifications
|
Parameter |
Standard Model (PU-2000) |
Heavy-Duty Model (PU-3000) |
|
Max. Load Capacity |
2,000 kg |
3,000 kg |
|
Platform Dimensions |
1400 x 1600 mm (Customizable) |
1600 x 2000 mm (Customizable) |
|
Max. Lifting Height |
1,200 mm |
1,500 mm |
|
Min. Height (Closed) |
220 mm |
260 mm |
|
Lifting Speed |
Approx. 40 - 50 mm/s |
Approx. 30 - 40 mm/s |
|
Tilting Angle (Optional) |
0 to 90 degrees hydraulic tilt |
0 to 90 degrees hydraulic tilt |
|
Power Unit Rating |
3.0 kW, 380V, 50/60Hz, 3-Phase |
4.0 kW, 380V, 50/60Hz, 3-Phase |
|
Hydraulic Working Pressure |
16 MPa |
18 MPa |
|
Control Interface |
Siemens PLC + Pendant Control / Foot Switch |
Siemens PLC + Pendant Control / Foot Switch |
|
Operating Weight |
1,450 kg |
1,980 kg |
Machine Configuration
Hydraulic Power Unit:
Utilizes high-efficiency gear pumps and solenoid valves (Rexroth or Yuken equivalents) mounted with vibration-dampening brackets to reduce noise and thermal buildup.
Electrical Enclosure:
IP55-rated control cabinet housing Siemens/Schneider low-voltage switchgear, thermal overload protection, and standardized terminal blocks.
Cylinder Assembly:
Honed steel cylinder barrels with induction-hardened, hard-chrome plated piston rods designed for high cycle rates without seal degradation.
Surface Treatment:
Shot-blasted steel framework finished with industrial-grade epoxy primer and two-part polyurethane topcoat, resistant to wear and chemical cleaning agents.
Applications
Guillotine Paper Cutter Infeed / Outfeed:
Positions paper stacks precisely at table level before and after cutting operations, reducing operator fatigue.
Offset Printing & Packaging Lines:
Feeds unprinted paper sheets into high-speed presses or unloads finished corrugated board stacks from die-cutters.
Paper Converting & Ream Packaging:
Integrates with wrapping and bundling machinery for automated paper ream transfer.
Customization & OEM Solutions
We engineer custom paper lift tables to match specific factory layouts, integration constraints, and unique material dimensions. Engineering modifications include:
Non-Standard Platform Dimensions:
Custom widths and lengths to accommodate oversize paper formats (e.g., B0, B1 or custom jumbo rolls).
Conveyor Integration:
Integration of driven roller conveyors, chain conveyors, or air-float tables for automated line transfer.
Pit-Mounted vs. Surface-Mounted:
Low-profile designs for surface placement without floor trenching, or deep-pit configurations for zero-height roll-on loading.
Voltage & Control Customization:
Electrical systems built to local industrial standards (e.g., 480V/60Hz/3Ph or specific local safety control logic).
Quality Control
Every paper unloader undergoes strict factory testing before packaging:
Dimensional & Weld Inspection:
Ultrasonic and visual inspection of load-bearing structural welds according to AWS/ISO standards.
01
Load Testing:
Each unit is tested at 125% of rated capacity dynamically and 150% statically to verify structural integrity and safety factor margins.
02
Hydraulic Pressure Testing:
4-hour pressure holding test to confirm zero internal/external leakage in valves, hoses, and cylinders.
03
Electrical Functional Run:
Continuous 50-cycle burn-in test of PLC logic, limit switches, and safety interlocks.
04
Packaging & Shipping
Corrosion Protection:
Critical machined surfaces and exposed rods are coated with anti-rust compound; entire unit is sealed in heavy-duty moisture barrier film with desiccants.
Crate Engineering:
Secured to reinforced fumigated wooden skids using heavy-duty bolted bracing, preventing shifting during container transit.
Container Loading:
Handled by certified rigging staff, securing units via heavy-duty lashing straps inside 20ft or 40ft standard open-top or dry containers depending on dimensions.
Technical Support, Delivery & After-Sales Service
Standard Lead Time:
30–45 days for standard models; 55–70 days for custom-engineered configurations.
Installation Support:
Detailed remote installation guidance via video/documentation; on-site engineering supervision available upon request.
Documentation Package:
Comprehensive English manuals supplied, including electrical schematics, hydraulic piping diagrams, PLC ladder logic backup, and an illustrated spare parts catalog.
Spare Parts Availability:
Critical wear items (seals, limit switches, solenoid coils) stocked for immediate dispatch to minimize facility downtime.
FAQ
Request a Quote
To receive a precise technical proposal, shipping schedule, and commercial quotation for your project, please provide our engineering team with the following parameters:
Max. paper stack dimensions (L x W x H) and weight.
Target application (e.g., matching a specific guillotine cutter brand and model).
Installation preference (surface-mounted with ramp or pit-mounted).
Zhejiang Dai's Printing Machine Co., Ltd. is one of the most experienced paper unloader manufacturers and suppliers in China, also supports customized service. Please rest assured to buy bulk durable paper unloader at low price from our factory. For pricelist, contact us now.
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