Multi-Roll Mill Roll Changer With Dual Clamping Heads
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Solution Overview
Problem
Existing multi-roll mills have low roll changing efficiency due to the need for the roll changing device to enter and exit the mill house multiple times, resulting in prolonged operation times and reduced operability.
Innovation Solution
A roll changing device with two rows of clamping heads, one for the inlet and one for the outlet, allows for simultaneous lateral movement of used rolls out and new rolls in, enabling the roll changing process to be completed with the device entering and exiting the mill house only once, utilizing the lateral movement space of work rolls without bearing chocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the roll changing device enters and exits the mill house multiple times following the traditional process, then the roll changing process can be completed step by step, but the roll changing time is prolonged and operational efficiency is reduced
Solution Approach 1:
The patent merges the functions of clamping used rolls and clamping new rolls into a single roll changing device with two rows of clamping heads. The device simultaneously performs both clamping actions during one entry into the mill house, eliminating the need for separate entry and exit operations for each clamping action. This combining of functions directly reduces the number of times the device must enter and exit the mill house, thereby reducing roll changing time and improving efficiency.
Solution Approach 2:
The roll changing device is segmented into two independent rows of clamping heads: a first row for clamping used rolls and a second row for clamping new rolls. Each row can independently clamp its respective rolls simultaneously. This segmentation allows the device to handle both used and new rolls in parallel during a single entry, eliminating sequential operations and reducing overall roll changing time.
2Ease of operation
If the roll changing device is equipped with only one row of clamping heads for sequential operation, then the device structure remains simple, but the roll changing process requires multiple entries and exits increasing operational complexity
Solution Approach 1:
The roll changing device is designed with multi-functionality by incorporating two rows of clamping heads that can simultaneously clamp both used rolls and new rolls. This universal design allows the single device to perform multiple clamping operations without requiring separate specialized devices for each function, thereby simplifying the overall operational process while managing device complexity through integrated design.
Data Source
AI summary
A roll changing device is applicable to a multi-roll mill. Under a roll changing state, assembly parts of the work rolls and the bearing chocks have a lateral movement space with the internal width not less than the assembly width of the work rolls and the bearing chocks in a lateral direction of the assembly parts moving along a rolling strip in a mill house, and the movement space allows another work rolls to coexist with used work rolls in the mill house before the used work rolls are pulled out. The roll changing device is provided with at least two rows of clamping heads, one row of clamping heads corresponding to an inlet side are inlet clamping heads, another row of clamping heads close to an outlet side are outlet clamping heads, each row of clamping heads comprises a pair of upper and lower clamping heads arranged in parallel.