Linear Transfer Mechanism for Necking Cans
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Solution Overview
Problem
Conventional apparatuses for manufacturing necking cans face issues with low productivity due to shaking holders during rotational transfer, requiring speed limitations and frequent replacement of molds and holders, making it difficult to process cans of various sizes efficiently.
Innovation Solution
An apparatus with a linear transfer mechanism using multiple cylinders and a guide system to stabilize holders, combined with a modular mold pocket for rapid replacement and separate molding units for processing different sizes, enabling high-speed processing and efficient handling of various can sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If rotational transfer is used to transfer cans, then the transfer operation can be continuous, but the holders are shaken by inertia which reduces productivity and requires speed limitation
Solution Approach 1:
The patent inverts the conventional rotational transfer mechanism by using linear reciprocating motion instead. The lower press plate moves linearly back and forth to transfer holders between molds, eliminating the rotational inertia that causes holder shaking. This allows higher transfer speeds without compromising holder stability.
Solution Approach 2:
The patent replaces the rotational mechanical system with a linear reciprocating system. The motor drives the lower press plate in linear motion through connecting rods and guides, substituting the rotational mechanism that caused inertial shaking. This mechanical substitution enables stable high-speed transfer.
2Adaptability or versatility
If multiple molds and holders are used for various can sizes, then different sizes can be processed, but they must be replaced and set one by one which reduces productivity
Solution Approach 1:
The patent merges multiple molds and holders of different sizes into a single movable assembly. The mold assembly includes multiple molds arranged in sequence, and the holder assembly includes multiple holders that can be replaced as a unit. This combining allows quick switching between different can sizes by replacing the entire assembly rather than individual components.
Solution Approach 2:
The patent makes the mold and holder assemblies dynamic and interchangeable. The mold assembly can be quickly removed and replaced with another assembly configured for different can sizes. This dynamic reconfigurability enables rapid adaptation to various product specifications without lengthy setup times.
3Ease of operation
If rotational transfer is used, then the lower press plate can transfer cans to the next process, but the shaking requires soft strengthening material which causes wear and requires frequent replacement
Solution Approach 1:
The patent inverts the transfer mechanism from rotational to linear reciprocating motion. This eliminates the inertial shaking that necessitated soft strengthening materials like leather or synthetic resin between holders and guides. The linear motion through guides and connecting rods provides stable transfer without wear-prone cushioning materials.
4Stability of the object's composition
If the lower press plate rotates slowly to prevent holder shaking, then holder stability is maintained, but productivity is reduced
Solution Approach 1:
The patent completely inverts the transfer mechanism from rotational to linear reciprocating motion. This fundamental change eliminates inertial shaking regardless of speed, allowing the lower press plate to move quickly in straight lines during transfer. The guides and connecting rods constrain the motion to prevent shaking, enabling high-speed operation while maintaining holder stability.
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 achieves high-speed processing of necking cans with reduced holder movement and rapid mold replacement, allowing for simultaneous production of cans in different sizes, thereby enhancing productivity and equipment management efficiency.
Implementation Method 1
a first cylinder for transferring the holder along the first guide, a second cylinder for transferring the holder along the second guide
Implementation Method 2
third and fourth cylinders for transferring the holder at both ends of the first and second guides
Data Source
AI summary
According to the present invention, an apparatus for manufacturing necking cans processes inlets of cans for which drawing processes are completed, wherein the apparatus comprises: a lower press plate; an upper press plate arranged so as to move linearly in the upward and downward directions relative to the lower press plate; a molding unit including a guide formed on the lower press plate, a plurality of holders arranged on the guide such that the holders can be transferred, and a plurality of molds arranged on the upper press plate; transferring means for transferring the holders along the guide; and driving means for driving the upper press plate. The apparatus of the present invention is advantageous in that cans for which the drawing processes are completed are linearly transferred by a plurality of cylinders and processed at a high speed.