Tube Winding Device with Pivotable Bending Mechanism
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Solution Overview
Problem
In the production of precise metal tubes, particularly steel, the existing cold pilgering process requires the entire tube to exit the rolling installation before it can be wound into a transportable condition, leading to inefficiencies in time and space usage, and causing potential twisting distortion during winding.
Innovation Solution
A winding device with a pivotably mounted bending mechanism allows the tube to be curved and wound in a spiral shape around a first axis, synchronized with the tube's movements during rolling, using rollers driven by a motor to prevent distortion and enable continuous curvature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the tube is allowed to completely exit the rolling installation before winding, then the tube can be wound without interference from rolling operations, but the production time increases and space requirements increase
Solution Approach 1:
The patent combines the winding operation with the rolling operation by positioning the winding device downstream of the roll stand, allowing both operations to occur simultaneously on different portions of the tube. The winding device receives and curves the finished tube while other portions are still being shaped by the rolling installation, merging two previously sequential operations into a concurrent process.
Solution Approach 2:
The winding device begins curving the tube into a spiral shape as soon as the tube portion is finished by the rolling installation, performing the winding action in advance before the entire tube has completed rolling. This preliminary winding action on finished portions while rolling continues on other portions reduces total production time.
2Productivity
If the tube is wound while still in the rolling installation, then production time and space are saved, but the tube may experience twisting distortion during winding
Solution Approach 1:
The bending device is mounted pivotably about a second axis that is substantially perpendicular to the first axis (the tube's longitudinal axis). This pivotable mounting allows the bending device to dynamically follow the tube's movements during rolling, adapting to the tube's position and motion while curving it into the spiral shape, thereby preventing twisting distortion.
Solution Approach 2:
The patent introduces a holding frame as an intermediary structure that receives the finished tube from the rolling installation and transfers it to the winding device. The holding frame acts as a mediator between the rolling installation and the winding device, enabling the tube to be smoothly transitioned and curved without experiencing harmful forces or distortion.
3Manufacturing precision
If the entire tube must exit the rolling installation before winding, then winding can be performed without interference, but the space required for the rolling installation increases
Solution Approach 1:
The winding device is integrated downstream of the roll stand within the same production line, merging the winding operation space with the rolling installation space. This allows the tube to be wound in place without requiring a separate, extended area for the tube to completely exit the rolling installation before winding begins.
Data Source
AI summary
Winding device with which a tube produced in a rolling installation can be wound up outside the rolling installation. The tube which has already left the rolling installation is coiled or wound up in such a winding device for transport purposes. The disclosed device and method make it possible for the tube in the finished shaped condition to be put into a transportable state downstream of the roll stand while still other portions of the tube are at the stage of the tube shell or are just being shaped. For that purpose a winding device for a tube produced in a rolling installation has a bending device for curving the tube so that it can be wound in a spiral shape around a first axis, and a holding frame, wherein the bending device is mounted to the holding frame pivotably about a second axis substantially perpendicular to the first axis.