Circular-Arc Rotary Member Welding Device for Small Pitch Tubes
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Solution Overview
Problem
Conventional welding devices for butt welding of tubes require a wide rotary member to move the welding torch in the radial direction, making them unsuitable for installations with tubes arranged at small pitches, and struggle with positioning on bent or protruding tubes.
Innovation Solution
A welding device with a rotary member of circular-arc shape and external teeth, supported by a table and gear train, and equipped with movement mechanisms to move the table in multiple directions, allowing the welding torch to be positioned radially, circumferentially, and axially without the need for a wide rotary member, and utilizing a support plate and positioning members for flexible installation on bent or protruding tubes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rotary member incorporates a mechanism for moving the welding torch in the radial direction, then the welding torch can be adjusted radially, but the width of the rotary member becomes great
Solution Approach 1:
The invention divides the movement mechanisms into separate components: the rotary member remains simple and narrow, while independent movement mechanisms are provided outside the rotary member to achieve radial, circumferential, and axial movements. This segmentation allows the rotary member to focus solely on rotation without incorporating complex movement mechanisms, thereby reducing its width while maintaining full adjustment capability.
2Length of stationary object
If the rotary member is made narrow to accommodate small pitch tube arrangements, then the device can be used in compact installations, but the mechanism for moving the welding torch radially cannot be incorporated into the rotary member
Solution Approach 1:
The invention moves the movement mechanisms from within the rotary member to external positions, utilizing spatial dimensions outside the rotary member's width. The first movement mechanism is positioned to move the table radially, the second movement mechanism moves circumferentially, and the third movement mechanism moves axially, thereby achieving full three-dimensional adjustment capability without increasing the rotary member's width.
3Ease of operation
If the welding device uses a wide rotary member with integrated movement mechanisms, then radial adjustment is achieved, but the device cannot be quickly installed or positioned on bent or protruding tubes
Solution Approach 1:
The invention employs dynamic, adjustable movement mechanisms that can adapt to various tube positions and shapes. The three movement mechanisms allow the welding torch to reach any position around the tube, including bent or protruding sections, without requiring a fixed, wide rotary member structure. This dynamic adjustment capability enables quick positioning and installation on diverse tube configurations.
Data Source
AI summary
A welding device which performs butt welding of tubes includes a table. The table supports a rotary member of a circular-arc shape to which a welding torch is mounted, and a gear train that rotates the rotary member around a center axis of the tubes. The welding device includes a first movement mechanism that moves the table in a first direction perpendicular to the center axis of the tubes, and a second movement mechanism that moves the first movement mechanism in a second direction perpendicular to the center axis of the tubes and the first direction.