Metal-Plastic Composite Pipe Compounding Device for Large Diameters

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Solution Overview

Problem

The existing metal-plastic composite pipe compounding process faces difficulties with large pipe diameters, leading to increased compounding complexity and reduced efficiency due to the size constraints of the composite assembly line.

Innovation Solution

A compact metal-plastic composite pipe compounding device with a material conveying apparatus, clamping assembly, and heating and cooling apparatus, allowing for sequential feeding, clamping, heating, cooling, and discharging processes, enabling efficient handling of pipes with large diameters through automated feeding and precise sealing and pressurization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a conventional composite assembly line is used for metal-plastic composite pipes with large diameters, then the pipe can be compounded, but the compounding difficulty increases and compounding efficiency decreases due to the large size making it inconvenient to flow into and out of the assembly line

Engineering Contradiction:
Improvecompounding efficiencyVSAvoidcompounding difficulty
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The compounding process is divided into distinct functional modules: feeding apparatus for automatic feeding, clamping assembly for sealing and pressurization, and heating-cooling apparatus for the compounding process. This segmentation allows each module to be optimized independently and facilitates easy assembly and disassembly for large diameter pipes.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The feeding apparatus and clamping assembly are designed to be movable rather than fixed, allowing the system to adapt to large diameter pipes that need to be fed in and out dynamically. The clamping assembly can move along the pipe to position itself for sealing and pressurization operations.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the pipe diameter is increased, then larger pipes can be processed, but the compounding difficulty increases and the process becomes more complex

Engineering Contradiction:
Improvepipe size rangeVSAvoidcompounding complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The clamping assembly performs multiple functions: sealing the pipe ends to contain pressure, pressurizing the plastic layer to bond it to the metal pipe, and driving the pipe through the heating-cooling apparatus. This multi-functionality reduces the need for separate specialized equipment for each operation.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses the pipe's own plastic layer as the bonding medium - the plastic is heated and melted, then pressurized to bond the layers together. The material itself serves the bonding function without requiring additional bonding agents or complex joining mechanisms.

Inventive Principle:
Principle #25Self-service

3Extent of automation

If automatic feeding and discharging is implemented, then labor efficiency improves, but the device structure becomes more complex

Engineering Contradiction:
Improvefeeding and discharging automationVSAvoidapparatus structure complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The feeding apparatus acts as an intermediary between the external handling equipment and the compounding process. It automatically feeds pipes into the clamping assembly and receives completed pipes for discharge, eliminating the need for manual intervention while maintaining a relatively simple overall structure through functional integration.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 device achieves high compounding and machining efficiency, supports batch production, and ensures effective sealing and pressurization, enhancing the overall compounding performance for pipes with large diameters.

Implementation Method 1

the plastic pipe needs to be heated and melted so that the plastic pipe and the inner wall of the metal pipe can be bonded

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

the plastic pipe needs to be heated and melted

Methodology Applied
Scientific EffectMelting: Melting

Implementation Method 3

then cooling is carried out, and the bonded part is cooled and solidified

Methodology Applied
Scientific EffectCooling: Cooling

Implementation Method 4

the bonded part is cooled and solidified

Methodology Applied
Scientific EffectSolidification: Freezing

Implementation Method 5

the sealing of a plastic pipe and the pressurization inside the plastic pipe may be completed in the clamping process

Methodology Applied
Scientific EffectPressurization: Pressurisation

Data Source

PatentUS12076911B2Metal-plastic composite pipe compounding device and compounding process
Publication Date: 2024.09.03 HUNAN ZHENHUI PIPE IND
  • US12076911B2 patent drawing
  • US12076911B2 patent drawing
  • US12076911B2 patent drawing

AI summary

The present disclosure provides a metal-plastic composite pipe compounding device and a compounding process, the compounding device comprising a material conveying apparatus, a workbench, and a support apparatus, a clamping assembly and a heating and cooling apparatus which are mounted on the workbench. The clamping assembly may move on the workbench; the material conveying apparatus moves a pipe to be machined into or out of the support apparatus; the support apparatus supports the pipe to be machined and may drive same to ascend or descend; the clamping assembly clamps and seals two ends of a plastic pipe of the pipe to be machined; and the clamping assembly drives the pipe to be machined to pass through the heating and cooling apparatus. In the present disclosure, a feeding process, a clamping process, heating and cooling processes and a discharging process may be completed in sequence by means of the compounding device.