Carousel Handle-Forming Machine Cradle Mechanism
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Solution Overview
Problem
Existing handle-forming machines for paper bags are mechanically complex, prone to jamming, and limited in production speed due to the use of rollers, drive belts, and suction devices, leading to reduced efficiency and increased risk of machine downtime and damage.
Innovation Solution
A carousel handle-forming machine with radial cradles and arms that grip and fold straps in a continuous motion, eliminating the need for rollers and suction devices, and ensuring synchronized operation with numerically controlled motors for precise handling and attachment of strap handles to paper rolls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional rollers, drive belts, and suction devices are used to handle straps, then the machine can perform handle-forming operations, but the production speed is limited and jamming risks increase
Solution Approach 1:
The patent removes the problematic components (rollers, drive belts, suction devices) from the system and replaces them with a novel cradle-based gripping mechanism. This extraction eliminates the sources of jamming while enabling continuous high-speed operation, directly resolving the contradiction between productivity and reliability.
Solution Approach 2:
The patent replaces the traditional mechanical transmission system (rollers and belts) with a direct gripping and folding mechanism using cradles. This substitution eliminates the need for complex mechanical transmissions that cause jamming, allowing the machine to operate at higher speeds with improved reliability.
2Manufacturing precision
If multiple rollers and suction devices are used to position and attach straps, then the handling can be precise, but the device complexity increases
Solution Approach 1:
The patent extracts and removes the complex subsystem of multiple rollers and suction devices, replacing them with a simplified cradle-based mechanism. This reduction in components directly lowers device complexity while maintaining positioning precision through the innovative single-cradle gripping and folding approach.
Solution Approach 2:
The patent combines multiple functions (gripping, positioning, and folding) into a single integrated cradle mechanism. By merging these functions that were previously performed by separate rollers and suction devices, the system achieves the same precision with significantly reduced mechanical complexity.
3Productivity
If the production speed is increased in traditional handle-forming machines, then more bags can be produced, but the risk of handle detachment and jamming increases exponentially
Solution Approach 1:
The patent removes the traditional roller-based handling system that causes handles to detach at high speeds and replaces it with a cradle mechanism that securely grips and folds handles throughout the entire process. This extraction eliminates the detachment problem while enabling increased production speed.
Solution Approach 2:
The patent employs a cradle mechanism that maintains continuous, secure contact with the handle from gripping through folding to attachment. This beforehand cushioning ensures the handle remains firmly positioned throughout the high-speed process, preventing detachment before it can occur.
Data Source
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AI summary
Handle-forming machine for shaping and attaching strap handles (M') to bags or carrier bags, and/or to continuous rolls of paper (N) to make bags or carrier bags, said strap handles (M') being formed by folding substantially into a U shape at least one strip or strap (M). The handle-forming machine comprises at least one carousel (G) rotating around a main shaft (Gx), said carousel (G) in turn comprising one or more cradles (C) for gripping and folding the straps (M). Advantageously each cradle (C) rotates around a main shaft (Gx) at least from a feed station (1) of said strap/s (M), to a folding station (4) into a U shape of each strap (M) and to a loading station (6) of the folded strap (M'), for attachment to the bag or to the continuous roll of paper (N) which the bag will be made from. Moreover the cradle also rotates around its own axis (Cx) radial to the main shaft (Gx), to rotate the position of the relative strap (M) between the folding (4) and loading (6) feed stations (1).