Unwinding Section Slabbing Device for Fiber Web Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fiber web production lines require a separate slabbing station for removing slab fiber web from reeling shafts, which interferes with the production process, increases operator workload, and poses safety risks due to manual handling.
Innovation Solution
An unwinding section with two positions and a slabbing device that includes a suction roll and pivot arms to pick up and empty the slab fiber web directly through a broke opening, eliminating the need for a separate slabbing station and reducing manual handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate slabbing station is used to remove slab fiber web from reeling shafts, then the slabbing function is provided, but the production process is interfered with and operator workload increases
Solution Approach 1:
The patent combines the slabbing device with the unwinding section, integrating two previously separate functions (slabbing and unwinding) into a single operational unit. This eliminates the need for a separate slabbing station and allows slabbing operations to occur concurrently with unwinding operations, thereby reducing operator workload and simplifying the production process structure.
2Adaptability or versatility
If manual handling is used for slab fiber web removal, then flexibility is maintained, but safety risks increase
Solution Approach 1:
The slabbing device is designed to automatically pick up and remove slab fiber web from the reeling shaft without requiring manual handling. The device serves itself by mechanically performing the slabbing operation, thereby eliminating safety risks associated with operator exposure to moving machinery and heavy materials while maintaining operational flexibility.
3Productivity
If a separate slabbing station is implemented, then slabbing capability is provided, but production continuity is disrupted
Solution Approach 1:
By integrating the slabbing device into the unwinding section, the system enables continuous operation where slabbing and unwinding occur simultaneously without requiring separate processing steps. This eliminates production interruptions that would occur with a separate slabbing station, maintaining continuous useful action while managing device complexity through functional integration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution streamlines the process by integrating slabbing into the unwinding section, reducing operator workload, enhancing safety, and maintaining production continuity without interfering with other operations.
Implementation Method 1
a suction roll configured to pick up a slab fiber web from a reject roll
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to an unwinding section for unwinding a fiber web (W) from a parent roll (12) wound around a reeling shaft (10), which unwinding section (15) comprises two unwinding positions (I, II) consisting of a first unwinding position (I) and a second unwinding position (II), in which unwinding section (15) the unwinding of the parent roll (12) is configured to be begun at the first unwinding position (I) and in which unwinding section (15) towards end of the unwinding the parent roll (12) is configured to be transferred to the second unwinding position (II), which unwinding section (15) comprises a broke opening (26). The unwinding section (15) comprises a slabbing device (35) configured to operate in area of the first and second unwinding positions (I, II). The slabbing device (35) is configured to pick up a slab fiber web (RW) from a reject roll (13) formed of a fiber web remaining on the reeling shaft (10) after the unwinding of the parent roll (12) is finished in the second unwinding position (II) and the slabbing device (35) is configured to empty the slab fiber web (RW) through the broke opening (26). The invention also relates to a method for removing slab fiber web from a reeling shaft for removing slab fiber web from a reeling shaft (10) in an unwinding section (15) comprising two unwinding positions (I, II) consisting of a first unwinding position (I) and a second unwinding position (II) and comprising a broke opening (26), in which method in the unwinding section (15) the unwinding of the parent roll (12) is begun at the first unwinding position (I) and towards end of the unwinding the parent roll (12) is transferred to the second unwinding position (II). In the method the slab fiber web (RW) is removed by a slabbing device (35) operating in area of the first and second unwinding positions (I, II), the slab fiber web (RW) from a reject roll (13) formed of a fiber web remaining on the reeling shaft (10) after the unwinding of the parent roll (12) is finished in the second unwinding position (II) is picked up by the slabbing device (35) and the slab fiber web (RW) is emptied from the slabbing device (35) through the broke opening (26).