Splicing Device Movable Cutting Members Web Material
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Solution Overview
Problem
Existing unwinding and splicing systems for continuous web materials, particularly in corrugated board manufacturing, face challenges due to complex and costly designs when space constraints are present, limiting the ability to splice web materials efficiently and continuously.
Innovation Solution
A splicing device with movable cutting members that can withdraw transversely from the feed path, allowing for a staggered position to facilitate splicing between two web materials using a single splicing device, enabling efficient cutting and splicing without the need for extensive machine reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If unwinders with three positions are used to allow insertion and removal of rolls from the same side of the line, then the space constraint is accommodated, but the overall dimensions and complexity of the machine increase
Solution Approach 1:
The cutting members are made movable between an operating position (in front of each other for cutting) and an idle position (removed from the feed path). This dynamic reconfiguration allows a single splicing device to perform functions that traditionally required multiple stationary devices, reducing overall machine complexity while maintaining space efficiency
Solution Approach 2:
A single splicing device with movable cutting members is designed to handle splicing operations that would traditionally require multiple separate splicing devices or three-position unwinders. The cutting members can serve multiple functions: cutting the first web material, positioning for the second web material, and facilitating splicing, thereby reducing device complexity while accommodating space constraints
2Area of stationary object
If unwinders with three positions are used to allow insertion and removal of rolls from the same side of the line, then the space constraint is accommodated, but the overall length of the processing line increases
Solution Approach 1:
The movable cutting members allow the splicing device to reconfigure its structure dynamically, enabling it to perform multiple splicing operations in a compact arrangement. This reduces the need for extended processing lines with multiple stationary splicing positions, thereby shortening the overall processing line length while maintaining efficient space utilization
3Device complexity
If a single splicing device is used with movable cutting members, then the device complexity is reduced, but the precision of splicing must be maintained
Solution Approach 1:
The cutting members are designed with precise movement mechanisms that allow them to transition between operating and idle positions while maintaining accurate positioning. This dynamic capability enables a single, less complex splicing device to achieve the same splicing precision as more complex multi-position systems, thereby reducing device complexity without sacrificing manufacturing precision
Data Source
AI summary
The splicing device for splicing a trailing edge of a first web material to a leading edge of a second web material includes members defining a feed path of the web material. The device also includes a first cutting member and a second cutting member, cooperating with the first cutting member. One of the two cutting members is provided with a movement transverse to the feed path of the web material, to move the cutting member from an operating position, in which it is in front of the other cutting member, to an idle position, withdrawn with respect to the feed path of the web material.