Electric Pipe Expander with Guided Mandrel for Precise Socket Forming
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Solution Overview
Problem
Existing pipe expanders, both manual and electric, suffer from inefficiencies in pipe socket processing due to complex structures, low positioning precision, and labor waste during clamping, leading to inconsistent quality and time consumption.
Innovation Solution
An electric pipe expander with a simple structure featuring a mandrel sliding cavity, a chuck body, and a worm gear mechanism that allows for precise pipe expansion using an elastic body to decelerate axial movement, ensuring uniform pipe socket shape and reducing labor through automated clamping and positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a threaded rotary rod clamp is used for pipe positioning, then the pipe can be clamped and positioned, but the positioning precision is low and time is wasted during clamping
Solution Approach 1:
The patent replaces the traditional threaded rotary rod mechanical clamping system with a positioning jaw that slides along guide rails. This substitution eliminates the need for threading operations and manual adjustment, achieving both high positioning precision and time savings through a streamlined mechanical system.
2Productivity
If an electric pipe expander with complex internal mechanical structure is used, then time and labor are saved in pipe expanding processing, but the device is inconvenient to carry and use due to large size
Solution Approach 1:
The patent employs a compact, integrated housing design that encloses all mechanical components in a streamlined structure. This allows the electric pipe expander to maintain high processing efficiency while reducing overall device size and improving portability, making it easier to carry and operate in various installation environments.
3Weight of moving object
If manual pipe expander is used, then the device is small in size and light in weight, but time and labor are wasted in pipe expanding processing
Solution Approach 1:
The patent replaces manual mechanical operation with an electric motor-driven system. The motor powers the mandrel to rotate and push the pipe expanding cone, automatically completing the expansion process. This substitution significantly improves processing efficiency while keeping the device compact and lightweight through optimized mechanical design.
4Reliability
If traditional clamp with threaded rotary rod is used for pipe clamping, then the pipe can be secured, but the structure is complicated and manufacturing cost is high
Solution Approach 1:
The patent divides the clamping function into separate components: a positioning jaw for precise positioning and guide rails for support. This segmentation simplifies the overall structure compared to the integrated threaded rotary rod system, reducing manufacturing complexity while maintaining reliable pipe clamping through the coordinated action of these simpler components.
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
The electric pipe expander achieves high positioning precision, saves time and labor, and guarantees consistent pipe socket quality with a compact design that reduces weight and cost, while incorporating intelligent control for automated operation.
Implementation Method 1
the elastic body decelerates the axial moving speed of the mandrel through self-deformation
Implementation Method 2
The mandrel configured to push the pipe expanding cone to perform pipe expanding processing is driven through the worm gear and worm mechanism
Implementation Method 3
the guide screw rod achieves a support positioning and guide effect on the mandrel
Data Source
AI summary
An electric pipe expander and intelligent control circuit for the electric pipe expander are provided. The electric pipe expander includes a pipe expander body and a mandrel sliding cavity disposed on the pipe expander body. A chuck body capable of clamping a pipe to be processed is disposed at an opening end of the mandrel sliding cavity. A mandrel is slidingly connected in the mandrel sliding cavity, an outer side end of the mandrel is provided with an obliquely disposed pipe expanding cone, an inner side end of the mandrel is provided with an elastic body accommodating cavity. Flat keys are disposed on the mandrel, and an elastic body is clamped and disposed between the flat keys and a bottom surface of the elastic body accommodating cavity.