Locking Vise Pipe Adapter Quick-Release Mechanism
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Solution Overview
Problem
Existing locking vises for pipes in welding machines are inefficient due to the time-consuming and tool-dependent process of fixing and removing reduction adapters, often made difficult by dirt and mechanical complexity.
Innovation Solution
A locking vise design featuring C-shaped reduction bodies with a T-shaped cross-section and a locking pin system, including an elastic element and a pushbutton mechanism, allows for quick and tool-free application and removal of adapters by using a locking pin with eccentric parts and an elastic element to secure and release the adapter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screw system is used to fix the reduction adapter to the jaw, then the adapter can be securely fixed, but the process becomes time-consuming and requires special tools
Solution Approach 1:
The fixing mechanism is segmented into a locking lever with notches that engage with corresponding protrusions on the adapter, replacing the monolithic screw system. This allows the adapter to be fixed through simple lever movement rather than threaded fastening, reducing time and tool requirements while maintaining secure attachment
Solution Approach 2:
Instead of using a screw that threads into the jaw to pull the adapter in, the invention uses a locking lever that pushes the adapter against a stop surface. The fixing action is inverted from a threading/pulling mechanism to a pushing/leveraging mechanism, enabling tool-free operation and faster attachment
2Reliability
If a screw system is used to fix the reduction adapter, then the adapter can be secured, but the process becomes complex and difficult to operate
Solution Approach 1:
The fixing mechanism inverts the traditional screw approach by using a lever that pushes the adapter against a stop rather than a screw pulling it in. This inversion transforms a complex threading operation into a simple lever-pushing motion, greatly improving ease of operation while maintaining secure fixation
Solution Approach 2:
The locking lever system is designed to be self-operating through simple manual manipulation. The lever's movement automatically engages the notches with protrusions and secures the adapter without requiring external tools or complex adjustment procedures, making the system self-service and easy to operate
3Reliability
If a radial through whole screw system is used, then the adapter can be fixed to the jaw, but dirt accumulation makes tightening difficult
Solution Approach 1:
The invention extracts the fastening function from the traditional screw system and relocates it to a locking lever mechanism. By taking out the screw entirely and replacing it with a lever that engages through notches and protrusions, the system eliminates the threaded holes where dirt accumulates, making the fixation process resistant to dirty environments
Solution Approach 2:
The locking lever acts as an intermediary between the operator and the adapter fixation. Instead of directly threading a screw into the jaw (which creates dirt-trap holes), the lever mediates the fixing process through surface engagement and notch-protrusion interaction, preventing dirt accumulation while achieving reliable attachment
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 rapid and convenient installation and removal of reduction adapters without specialized tools, improving operational efficiency and reducing the risk of mechanical jamming due to dirt or complexity.
Implementation Method 1
a locking pin (21) inserted through said slot (16) substantially perpendicularly with respect to the longitudinal direction of said reduction body (17), said locking pin (21) having a first part (22) and a second part (23) whose transverse dimensions with respect to the pivot axis are mutually different, the first part (22) forming, when positioned in the slot (16), an undercut (24) for preventing extraction of the reduction body (17), the second part (23) being recessed with respect to the first part (22) and forming, when arranged in the slot (16), a disengagement configuration for the reduction body (17)
Data Source
Figure 1~3
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Figure 7~8
AI summary
A locking vise for pipes, useful particularly but not exclusively in operations for welding portions of plastic pipe by polywelding of the head portion. The vise comprises two mutually opposite jaws (11, 12) which form, when clamped, a circular locking seat (13) for a portion of pipe. A slot (16) is formed on the grip surface (15) of each jaw (11, 12) in order to accommodate a corresponding portion of a body (17) for reducing the diameter of the circular locking seat (13) of the pipes. Means (20) for fixing to the corresponding jaw (11, 12) are further associated with each reduction body (17). The fixing means (20) comprise at least one locking pin (21), which can perform an axial translational motion and is inserted through the slot (16) transversely to the slot (16). The locking pin (21) has, in the axial direction, a first part (22), which forms, when arranged in the slot (16), an undercut (24) for preventing extraction for the reduction body (17), and a second part (23), which is recessed with respect to the first part (22) and forms, when arranged in the slot (16), a disengagement configuration for the reduction body (17).