Socket Fusion Jig With Worm Gear Drive for Tight Spaces
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Solution Overview
Problem
Existing socket fusion jigs for heat-fusable plastic pipes are limited in their ability to operate in close quarters without deforming the pipe and require external power sources, making them unsuitable for tight spaces and efficient manual operation.
Innovation Solution
A manually operated socket fusion jig with a gear box and worm gear drive mechanism that allows for synchronized movement of pipe and coupling saddles, using roller chains for secure engagement and preventing deformation, and is designed for use with pipes and couplings of varying diameters without the need for external power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a socket fusion jig is designed to accommodate large pipe diameters, then the pipe can be securely clamped, but the device becomes too large to operate in tight spaces
Solution Approach 1:
The jig is divided into separate modular components including pipe support, coupling support, and clamping mechanisms that can be independently adjusted. This segmentation allows the device to adapt to different pipe diameters without requiring a completely larger structure, as only the necessary components are extended or adjusted to match the pipe size.
Solution Approach 2:
The jig incorporates dynamic adjustment mechanisms including telescopic arms, adjustable clamps, and movable supports that can be configured for different pipe diameters. These dynamic elements allow the device to maintain a compact base structure while expanding only the specific components needed to accommodate larger pipes, keeping the overall footprint manageable for tight spaces.
2Ease of operation
If the jaws are designed to unclamp far enough to clear the entire outer diameter of the pipe, then the pipe can be removed, but the device cannot be used in close quarters
Solution Approach 1:
The piping system is designed so that the pipe can be partially nested within the coupling during the fusion process, and the jaws are positioned to clamp only the exposed portions. This nesting arrangement allows sufficient jaw travel for secure clamping and controlled release without requiring the entire pipe diameter clearance, enabling operation in confined spaces while maintaining ease of pipe removal.
Solution Approach 2:
Instead of requiring linear jaw travel equal to the full pipe diameter, the mechanism uses angular rotation and multi-axis movement to achieve pipe release. The jaws can pivot and move along multiple dimensions, allowing them to clear the pipe through rotational motion rather than purely linear displacement, reducing the space required for operation.
3Extent of automation
If an external power source is integrated into the socket fusion jig, then automated operations are possible, but the device cannot be used without access to electricity
Solution Approach 1:
The jig is designed as a manual-operated device where the operator directly controls all clamping, positioning, and fusion operations through hand-operated mechanisms. This self-service approach eliminates the need for external power sources, generators, or batteries, making the device completely portable and adaptable to remote locations without electricity while still providing sufficient automation through well-engineered mechanical advantage systems.
Solution Approach 2:
The design replaces motorized actuators, hydraulic systems, or pneumatic mechanisms with purely mechanical operation systems. Hand cranks, levers, and cam mechanisms provide the necessary force multiplication to achieve automated-like operation without electronic power sources, maintaining ease of operation while ensuring portability to power-free locations.
4Manufacturing precision
If the pipe is clamped tightly to prevent movement during fusion, then alignment is maintained, but the pipe may deform under excessive clamping force
Solution Approach 1:
The clamping force is distributed across multiple localized contact points rather than concentrated at single points. The jaws feature contoured surfaces that match the pipe geometry, creating multiple small contact zones that collectively provide secure holding without excessive localized pressure. This local quality distribution maintains alignment precision while preventing deformation by spreading the mechanical load.
Solution Approach 2:
The clamping mechanism incorporates adjustable parameters including clamping force magnitude, contact point positioning, and jaw opening dimensions. These parameters can be optimized based on pipe diameter, wall thickness, and material properties to achieve the minimum necessary holding force for alignment without exceeding the threshold that would cause deformation. The system allows real-time parameter adjustment during operation.
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 efficient and deformation-free joining of heat-fusable plastic pipes in tight spaces with minimal operator effort, accommodating a range of pipe sizes and ensuring proper alignment and fusion without external power sources.
Implementation Method 1
The socket fusion jig described herein is a manually operated socket fusion jig (2) that includes a gear box (12). The gear box includes a worm gear drive (58) that is adapted to move a pipe support (14) and a coupling support (20) laterally relative to one another.
Implementation Method 2
using roller chains for secure engagement and preventing deformation
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A socket jig is provided. In one embodiment, the socket jig includes a pair of pipe clamp jaws and a pair of coupling clamp jaws. The pair of pipe clamp jaws can move towards and away from one another using a tightening mechanism that runs through one or more openings in each of the pipe clamp jaws. Similarly, the pair of coupling clamp jaws can move towards and away from another using a tightening mechanism that runs through one or more openings in each of the coupling clamp jaws. Finally, the pipe clamp jaws and the coupling clamp jaws can move towards each other by turning a handle which operates a gearbox that provides mechanical advantage to the operator as the pipe clamp jaws and coupling clamp jaws move towards or away from on another.