Weld Tip Removal Mechanism Using Guided Rotary Extraction
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Solution Overview
Problem
Existing weld tip removers are inefficient in removing weld tips from shanks without causing bending or damage to the shank and weld tip during the removal process.
Innovation Solution
A weld tip remover design featuring a cylindrical tubular case with an inclined guide groove, a rotating plate, and a hinge bar driven by a translational actuator, which ensures the weld tip is securely gripped and removed without applying force that would bend the shank or weld tip, utilizing a block piece to prevent axial movement and a ball plunger for smooth removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional weld tip remover is used, then the weld tip can be removed from the shank, but the shank and weld tip may be bent during the removal process
Solution Approach 1:
The removal process is segmented into distinct phases: gripping phase (jaws closed), rotation phase (plate rotates), and extraction phase (block piece blocks axial movement). This segmentation allows each phase to be optimized independently, preventing bending while maintaining efficiency.
Solution Approach 2:
The block piece is positioned in advance to block the axial movement path before extraction begins. The guide groove is pre-formed to guide the rotation path. These preliminary arrangements ensure that bending forces are prevented from the start of the removal process.
2Productivity
If force is applied to remove the weld tip quickly, then productivity improves, but the shank and weld tip are likely to bend
Solution Approach 1:
The inclined guide groove provides a curved rotational path for the rotating plate, allowing the weld tip to be extracted along a smooth arc rather than a straight line. This curvature distributes the extraction force over a longer path, reducing peak bending forces while maintaining removal speed.
Solution Approach 2:
The inclined guide groove acts as an intermediary mechanism between the rotational motion and the extraction force. It converts the rotational movement into a controlled extraction path that prevents direct application of bending forces to the weld tip and shank.
3Device complexity
If a simple removal mechanism is used, then device complexity is reduced, but the ability to prevent bending is compromised
Solution Approach 1:
The rotating plate serves multiple functions: it grips the weld tip, rotates to extract it, and its guide bar interacts with the inclined guide groove to control the extraction path. The block piece also serves dual purposes by blocking axial movement and guiding the extraction. This multi-functionality reduces the number of separate components needed while maintaining protection capabilities.
Solution Approach 2:
The inclined guide groove and guide bar work together in a self-regulating manner. As the rotating plate turns, the guide bar naturally follows the inclined groove, automatically controlling the extraction path and preventing bending without requiring additional control mechanisms.
Data Source
AI summary
A weld tip remover includes a cylindrical tubular case with an inclined guide groove formed therein along a circumference of a tube wall, a rotating plate axially rotatably mounted inside the cylindrical tubular case by a guide bar provided on an outer circumferential surface thereof and inserted into the inclined guide groove, and defining a tip receiving hole formed through an inner circumferential surface thereof, and a hinge bar having one end hinged to a translational actuator and a body portion hinged to one side of the rotating plate, and another end at which a driving jaw exposed to one side of an inner circumferential surface of the rotating plate is provided.