Gas-Filled Filling Body Drive Unit and Welding Tool
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Solution Overview
Problem
Existing apparatuses for producing gas-filled filling bodies are complex, require substantial maintenance, and have high power consumption due to the need for precise synchronization of drive elements and large installation space, leading to inefficiencies in air-tight welding and increased waste.
Innovation Solution
A simplified apparatus with a drive unit positioned downstream of the gas filling device, eliminating the need for transport belts and reducing power requirements, using a braking mechanism to prevent air escape and angular guidance to prevent film warping, with two offset rollers for reliable transport and minimized leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If transport belts and complex drive mechanisms are used to move the plastic film, then the film can be transported through the apparatus, but the device complexity increases and power consumption rises
Solution Approach 1:
The patent removes the complex transport belts and multiple synchronized drive elements from the system. Instead, it uses a simple drive unit with rollers positioned downstream of the gas filling device to move the film through the apparatus, dramatically reducing mechanical complexity while maintaining transport functionality.
Solution Approach 2:
The patent replaces the mechanical belt-driven transport system with a roller-based friction drive system. The drive unit uses rotational rollers to grip and move the film through the apparatus, eliminating the need for complex gear mechanisms and synchronized belt drives.
2Reliability
If Teflon-coated steel welding runners are used for welding, then air-tight welding can be achieved, but substantial maintenance work is required
Solution Approach 1:
The patent employs a welding tool with a welding edge that can be easily replaced or renewed. Instead of using expensive Teflon-coated steel runners that require substantial maintenance, the invention uses a simpler welding edge design that can be quickly changed when worn, reducing maintenance time and cost while maintaining welding quality.
3Manufacturing precision
If multiple drive elements are used for film transport, then precise synchronization is needed to prevent film escape and crease formation, but the power consumption increases due to friction and gear losses
Solution Approach 1:
The patent eliminates multiple synchronized drive elements and their associated gear mechanisms. A single drive unit with rollers positioned downstream provides sufficient control for film transport, removing the need for complex synchronization systems and reducing power consumption from friction and gear losses.
Solution Approach 2:
The drive rollers are positioned to engage the film after the gas filling device, allowing the film to be pulled through the apparatus by the drive unit alone. The film's own tension and the rollers' friction grip provide the necessary control without requiring additional synchronized drive elements.
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 solution reduces operational complexity, minimizes air losses, and achieves reliable air-tight welding with reduced power consumption and simplified maintenance, enhancing the efficiency of gas-filled filling body production.
Implementation Method 1
a gas filling device positioned downstream of the supply reel and receiving the plastic film from the supply reel for blowing air into the pockets
Implementation Method 2
a welding tool positioned downstream of the gas filling device and receiving the plastic film from the gas filling device for welding the open border side of the plastic film
Implementation Method 3
a drive unit for moving the plastic film in the transport direction, with the drive unit applying a force upon the plastic film essentially downstream of the gas filling device
Data Source
AI summary
Apparatus for making gas-filled filling bodies includes a supply reel for storing a pre-fabricated half-tubular plastic film having an at least partially open border side and being divided into individual pockets by weld seams which extend transversally with respect to a transport direction of the plastic film. Positioned downstream of the reel and receiving the plastic film from the reel is a gas filling device for blowing air into the pockets. Positioned downstream of the gas filling device and receiving the plastic film from the gas filling device is a welding tool for welding the open border side of the plastic film for formation of closed filling bodies. The transport of the film through the apparatus is realized by a drive unit which applies a force upon the plastic film essentially downstream of the gas filling device, as viewed in the transport direction.