Paper Industry Cranes

The papermaking process is carried out continuously on a paper machine. Fibres are usually extracted from raw materials (e.g. wood, recycled paper, etc.), and pulp suitable for paper quality, diluted with water to a certain consistency, is initially dewatered in the web section of the paper machine to form a wet sheet of paper, which is then press dewatered and dried to form paper. The core process of papermaking can be divided into two main stages: the wet end and the dry end. Paper industry cranes contain a wide range of cranes.

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Gantry cranes are often used for stacking, handling and loading and unloading of timber. Gantry cranes are suitable for large-scale timber handling work, especially in yards, warehouses and production lines, due to their flexibility and strong load carrying capacity.

Gantry Cranes used in Paper Industry

• Timber unloading: gantry cranes can unload large quantities of logs or processed timber from trucks, trains or ships, and can quickly and efficiently move large quantities of timber to storage or processing areas.
• Timber stacking: In timber yards, gantry cranes can efficiently stack timber through their wide span. They can accurately control the height and position of stacked timber, maximising the use of warehouse or yard space.
• Handling before processing: In wood processing plants, gantry cranes can be used to handle wood from the storage area to the cutting, board cutting, compression and other processing equipment, thereby increasing productivity.
• Versatile loading: Gantry cranes can not only handle logs, but also finished timber, such as boards, plywood, dowels and so on. By configuring specialised spreaders or clamps, gantry cranes can adapt to a variety of different sizes and shapes of wood handling needs.

Χαρακτηριστικά:

• High load capacity: gantry cranes are capable of handling very heavy weights of timber, making them suitable for mass production and transport.
• Large span: Gantry cranes usually have a large span and are able to cover large areas, thus eliminating the need for frequent movement of timber stacks.
• Flexibility: Gantry cranes can be installed indoors and outdoors, adapting to different working environments, especially suitable for large timber yards.
• Efficient and safe: compared with traditional manual handling, gantry cranes not only greatly improve work efficiency, but also reduce the risk of personnel directly handling heavy timber, improving the safety of the workplace.

Dry End Crane/Winder Crane

It is the key equipment specially used for handling and transporting paper rolls in paper mills, which are respectively used for transporting paper after drying and material handling in the process of rewinding paper rolls. Generally equipped with double trolley or three trolleys, the hook below the configuration of the special spreader, for lifting paper rolls, replacement of paper rolls and other work.

Χαρακτηριστικά:

• Handling of large paper rolls: the main role of the dry end crane is to handle dried paper rolls. These rolls are often too large and heavy to be handled by hand or small equipment, and the crane ensures that they are moved quickly and safely to the appropriate area.
• Precise placement: Dry-end cranes are able to accurately place large rolls in storage or transfer them to the rewinder, reducing human error and ensuring line continuity.
• Increased productivity: automated handling by dry-end cranes reduces manual handling, greatly improves the efficiency of the paper production line, and ensures safety during operation.

Wed End Crane

It is used for maintenance and replacement of empty rolls, as a back-up for the dry end crane, and sometimes it is also needed to run to the wet end of the paper machine to assist in the replacement of parts, overhaul and maintenance of the paper machine equipment. Generally three independent trolleys are used.

Χαρακτηριστικά:

• Special Design: Wet end cranes are specially designed to operate in wet, heavy, and humid environments, featuring good corrosion resistance and waterproof performance to ensure long-term stable operation of the equipment.
• Pulp Handling: Wet end cranes are used for handling and processing wet pulp and related raw materials such as wood chips, waste paper, etc., which are usually very wet and heavy and difficult to be handled manually.
• Equipment maintenance and replacement: In paper mills, equipment often needs to be maintained or replaced, such as paper machines, drying cylinders, pumps, transmissions and so on. Maintenance cranes make it easier for crews to dismantle, move and install these heavy equipment components.
• Tools and materials handling: Maintenance cranes can also be used to move tools, parts and materials required for maintenance work, reducing the burden of manual handling and improving work efficiency.
• Emergency repairs: When the production line encounters a breakdown, maintenance cranes can be quickly put in place to help maintenance personnel to quickly replace the faulty equipment, shorten downtime and ensure that the production line is back in operation as soon as possible.

• Enhance efficiency: Using cranes to move heavy equipment or parts greatly reduces the time for maintenance work and improves the efficiency of repair and maintenance.

• Reduce downtime: the ability to quickly replace equipment helps to reduce production line downtime and minimise losses.

Sheet Cutters Roll Feeding Cranes

Lifting equipment specifically designed to handle material handling around paper cutters in paper mills. It is typically used to move, load, unload and position rolls of paper in the cutter area to ensure that the cutter works efficiently and safely. This type of crane is critical to paper mill production as it helps to quickly and safely transfer large rolls of paper to the cutter for cutting into smaller rolls or flats.

Usually hoist trolleys are used, with tonnages up to 5-10 tonnes.

Χαρακτηριστικά:

• Reduced Manual Handling: The handling of paper rolls is often time-consuming and hazardous, and cranes can replace heavy manual handling to improve work efficiency and ensure personnel safety.
• Precise manoeuvring: Many cutter-end cranes are equipped with automated control systems to precisely control the position of the paper roll, reducing errors and ensuring cut quality.
• High load capacity: Cranes at the cutter end usually have a high load capacity, and can easily handle rolls of various weights and adapt to the needs of different roll sizes.
• High safety: In the process of handling heavy paper rolls, the crane greatly reduces equipment damage or personnel injury caused by improper handling, and improves the overall safety of production.

Vacuum Lifter for Paper Rolls 

Once the production process is complete, the paper rolls are mechanically placed in an upright position. A vacuum paper roll lifter crane is then placed on top of the rolls to activate the vacuum, creating an airtight paper surface that makes the rolls ready for handling. The suction pads need to be placed on top of the rolls, which means that the rolls can be placed close together to maximise storage capacity.

Χαρακτηριστικά:

• Moving paper rolls: the paper roll vacuum lifter is mainly used to move all kinds of paper rolls, especially those with large diameter and heavy weight, which are difficult to handle manually. This equipment is able to move paper rolls from one position to another quickly and safely by means of vacuum adsorption.
• Precise placement: The vacuum lifter ensures that the paper rolls are accurately positioned during handling by means of a precise control system. This is particularly important when the rolls need to be placed on processing equipment (e.g. rewinders, cutters).
• Reduced damage: Thanks to the gentle adsorption of the vacuum lifter, no indentations or scratches are caused to the surface of the paper roll, making it particularly suitable for handling surface-sensitive or high-precision paper roll materials.
• Improved efficiency: vacuum lifters can significantly reduce the amount of work and time required for manual handling, especially in production environments where rolls need to be handled frequently.
• Adaptability to a wide range of sizes: the vacuum lifter can accommodate rolls of different diameters, lengths and weights, making it highly adaptable and eliminating the need for frequent adjustments to equipment configurations.

Mechanical Gripper for Paper Rolls

To be adapted to maritime transport, the paper rolls must be completely wrapped and can therefore no longer be lifted by vacuum technology, as the outer wrapping can easily be torn off. The mechanical paper gripper handles the paper rolls by means of a mechanical fixture that grips the rolls on both sides or on the outer diameter. It is highly adaptable and particularly suitable for handling paper rolls of different sizes and weights.

Χαρακτηριστικά

• Paper roll handling: Mechanical paper clamps are used to move large rolls of paper from production lines, warehouses or transport vehicles. These machines move heavy paper rolls quickly and safely from one place to another, for example from the warehouse to the printing press or rewinder. Stacking and storage: Mechanical paper clamps can be used to stack paper rolls in warehouses or yards.
• Stacking and storage: Mechanical paper clamping machines can be used to stack paper rolls in warehouses or yards. By means of a precise control system, it enables the rolls to be stacked securely, maximising the use of storage space.
• Loading, unloading and transport: in the logistics and transport of paper rolls, mechanical paper clamps can efficiently load paper rolls onto trucks, trains or containers, reducing manual loading and unloading and increasing transport efficiency.
• Adaptation to a wide range of specifications: Mechanical paper clamps are able to handle paper rolls of different sizes, from small rolls to large master rolls, and the mechanical fixtures can be adjusted according to requirements.
• Reduced roll damage: The clamping force of the mechanical clamping machine can be precisely controlled to prevent deformation or damage to the roll caused by over-clamping. This is particularly important for some high-quality paper products.

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