Cylindrical Container Forming and Welding Apparatus
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Solution Overview
Problem
Current methods for manufacturing containers with a tubular side wall and removable base are inefficient, lacking precision in forming and welding processes, particularly for cylindrical shapes, which affects the integrity and usability of containers for perishable goods.
Innovation Solution
An apparatus comprising a tube forming unit for folding and welding a sheet into a cylindrical shape, a base attachment unit for positioning and welding the base, and a control system for precise alignment and interlocking, utilizing ultrasonic or thermal welding and guide rollers for accurate diameter adjustment and seam formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional container manufacturing methods are used, then production can proceed with simple equipment, but manufacturing precision and structural integrity of the container are poor
Solution Approach 1:
The manufacturing apparatus is divided into distinct functional modules: a tube forming unit for creating the cylindrical side wall, a base attachment unit for securing the base, and an end welding unit for joining components. This segmentation allows each module to be optimized for its specific function, improving overall manufacturing precision while maintaining manageable equipment complexity through modular design
Solution Approach 2:
The tube forming unit progressively folds a sheet of side wall material into an elongate tube shape before welding, and the base attachment unit positions the base on the forward end of the tube in advance of final welding. These preliminary forming and positioning actions ensure proper alignment and geometry are established before final joining operations, thereby improving manufacturing precision
2Manufacturing precision
If traditional welding methods are used, then welding can be performed with simple equipment, but welding precision and seal integrity are insufficient
Solution Approach 1:
The end welding unit employs ultrasonic welding technology, which replaces traditional mechanical welding methods with ultrasonic vibration-based welding. This substitution enables precise welding of the base to the forward end of the tube and sealing of the tube ends with high precision and reliable seal integrity, while the ultrasonic welding system remains relatively compact and controllable
Solution Approach 2:
The welding process parameters such as ultrasonic vibration frequency, amplitude, and duration are precisely controlled to achieve optimal welding precision and seal integrity. By adjusting these parameters, the system can adapt to different material types and thicknesses, ensuring consistent high-quality welds without requiring overly complex equipment
3Productivity
If manual container assembly is used, then assembly process is simple, but productivity and efficiency are low
Solution Approach 1:
The apparatus combines multiple operations into a single integrated system: the tube forming unit creates the cylindrical structure, the base attachment unit secures the base, and the end welding unit performs welding and sealing operations in sequence. This merging of operations into one automated apparatus significantly improves manufacturing efficiency by eliminating manual handling and setup between operations, while the integrated design manages overall system complexity
4Manufacturing precision
If simple tube forming is used, then equipment is simple, but tube shape precision and dimensional accuracy are poor
Solution Approach 1:
The tube forming unit employs dynamically adjustable guide rollers that can be positioned and pressed against the tube during formation. This dynamic adjustment capability allows the forming equipment to adapt to different tube diameters and shapes, ensuring high dimensional accuracy and circularity. The guide rollers can be moved radially inward to apply precise forming pressure, improving tube shape precision while keeping the equipment design flexible rather than overly complex
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 apparatus ensures precise formation and welding of cylindrical containers, enhancing their structural integrity and usability for packaging and transporting perishable goods by ensuring a secure and airtight seal.
Implementation Method 1
The end welding unit may be an ultrasonic welding unit
Implementation Method 2
The end welding unit may be a thermal welding unit
Implementation Method 3
The base loading head may be adapted to contact the base at the feed position and apply at least a partial vacuum to the base that retains the base to the head
Data Source
AI summary
An apparatus for manufacturing a container that includes a side wall (5) in the form of a tube and a base (7) at one end of the tube. The apparatus includes a tube forming unit (15) for progressively folding a length of a sheet (19) of a side wall material into an elongate tube shape (21) having a forward end (23) for receiving a base (7) of the container and welding together lengthwise extending sides of the sheet to form the tube. The apparatus also includes a base attachment unit (17) for positioning a base of the container on the forward end of the tube.