Bend Pipe Identification Structure for Accurate End Treatment
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Solution Overview
Problem
Existing methods for manufacturing bend pipes for heat exchangers face challenges in distinguishing between the bending-start and bending-end sides due to differences in diameter and thickness at the ends, making appropriate terminal treatment difficult during assembly.
Innovation Solution
Incorporating an identification part as a protruding and/or recessed three-dimensional region on the bend pipe to differentiate between the bending-start and bending-end sides, which is formed during the manufacturing process using clamp members and a pipe bender with asymmetrical recessed parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If pipe expanding processing is performed on both end portions of the bend pipe, then dimensional accuracy is improved, but it becomes difficult to perform appropriate terminal treatment when diameters or thicknesses of both end portions are different
Solution Approach 1:
The invention applies asymmetry by providing an identification part that creates a visible difference between the two end portions of the bend pipe. This allows operators to easily distinguish which end has smaller diameter/thickness, enabling appropriate selection of pipe expanding punches and correct performance of terminal treatment, thereby resolving the contradiction between achieving dimensional accuracy and maintaining ease of operation.
Solution Approach 2:
The identification part serves as an intermediary element that mediates between the asymmetric dimensions of the bend pipe ends and the operator's decision-making process. By providing visual cues about which end requires which treatment, the identification part facilitates correct terminal treatment without requiring complex measurement or detection procedures.
2Ease of manufacture
If no measures are taken to determine bending-start or bending-end side, then manufacturing process is simplified, but it becomes difficult to perform appropriate terminal treatment
Solution Approach 1:
The invention applies preliminary action by forming the identification part during the bending process itself, before terminal treatment is performed. This preliminary formation of the identification feature allows subsequent terminal treatment to be performed accurately without adding significant complexity to the manufacturing process, as the identification part is created in advance as part of the normal bending operation.
3Ease of manufacture
If diameter or thickness difference between two ends is almost indistinguishable by visual observation, then manufacturing process is simpler, but detection of bending-start or bending-end side becomes difficult
Solution Approach 1:
The invention applies asymmetry by creating a distinct identification part that provides visual asymmetry between the two ends of the bend pipe. This visual asymmetry makes it easy to detect which end is the bending-start side or bending-end side, even when the actual dimensional differences in diameter or thickness are subtle and hard to detect by observation alone.
Solution Approach 2:
The invention applies the principle of visual changes by forming the identification part as a protruding or recessed three-dimensional region that creates visible contrast between the two ends. This visual differentiation allows operators to easily distinguish between bending-start and bending-end sides without requiring precise measurement tools or complex detection procedures.
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
Enables accurate identification and appropriate terminal treatment of the end portions, improving dimensional control and assembly precision by clearly distinguishing between the bending-start and bending-end sides, thus enhancing the manufacturing process and product quality.
Implementation Method 1
the metal pipe is generally bent along a circumferential surface of a roll block of the pipe bender while pulling the metal pipe
Implementation Method 2
the identification part being integrally formed as a protruding and/or recessed three-dimensional region
Data Source
AI summary
A metal bend pipe having a bend portion bent in a semi-circular arc shape is provided, in which an identification part that enables one of the two end portions of the bend portion to be identified as the bending-start side or the bending-end side is provided, and the identification part is integrally formed as a protruding and/or recessed three-dimensional region. Thus, it is possible to easily and reliably identify which of the two end portions of the bend portion is the bending-start side or the bending-end side.