Two-Handed Pneumatic Hole-Making System for Cylinder Collars
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Solution Overview
Problem
Existing hole-making systems for pressurized cylinders, such as LPG cylinders, are not suitable for creating holes on combustible gas cylinders due to the risk of sparks, and prior methods do not effectively address the need for attaching external labels on these cylinders.
Innovation Solution
A hole-making system comprising a hand unit controlled with two hands and a pedal, which minimizes user-related errors by allowing reliable and fast hole creation on cylinder collars, featuring a hook-shaped drilling head, power connection, and safety features like sensors and a safety cover to ensure safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a drill is used to make holes on the collar, then holes can be made, but sparkles occur which are not suitable for combustible gas cylinders
Solution Approach 1:
The patent replaces the traditional drill (mechanical rotating cutting tool) with a punching mechanism that uses a punch and die arrangement. This mechanical substitution eliminates the rotating motion that generates sparks, replacing it with a direct impact punching action that is inherently spark-free, thus resolving the contradiction between hole-making capability and spark generation in combustible environments.
Solution Approach 2:
The patent employs a pneumatic system with a compressor, air tank, and pneumatic motor to drive the punching mechanism. This pneumatic actuation replaces traditional electrical or manual drilling methods, providing a controlled, spark-free means of creating holes in the collar while maintaining operational reliability for combustible gas cylinder applications.
2Adaptability or versatility
If a permanent label is formed directly on the collar, then labeling is achieved, but holes cannot be made for attaching external labels
Solution Approach 1:
The patent separates the labeling function from the hole-making function. Instead of integrating label formation into the hole-making process (as in FR 2 762 241 A1), the system provides dedicated hole-making capability that can be used independently. This segmentation allows users to choose between permanent direct labeling or external label attachment with holes, thereby improving adaptability without compromising manufacturing simplicity.
3Reliability
If the hand unit is controlled with one hand, then operation is simpler, but user-related errors increase
Solution Approach 1:
The patent implements a dynamic control system where the punching operation requires coordinated action of both hands on the trigger mechanism. This dynamic requirement ensures that the operator maintains proper control and awareness during the punching process, reducing user-related errors while preserving ease of operation through intuitive two-handed control that becomes automatic with practice.
Solution Approach 2:
The system incorporates feedback mechanisms including sensors that detect the presence of the collar, the position of the punch, and the state of the safety interlocks. This feedback provides the operator with real-time information about the system state, enabling informed control decisions and reducing errors while maintaining operational simplicity through clear visual and tactile signals.
4Productivity
If the drilling process is automated completely, then productivity increases, but adaptability to different collar positions decreases
Solution Approach 1:
The hand-held punching unit is designed as a universal tool that can be manually positioned and oriented to accommodate various collar shapes, sizes, and positions on different cylinder types. The pneumatic power system provides automated punching force while the manual positioning provides adaptability, combining the benefits of both automation and flexibility in a single multi-functional device.
Data Source
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AI summary
With the present invention, there is provided a hole-making system for making holes on the collar (7) of a cylinder (T) The said hole making system comprises at least one hand unit (1) for making holes on the collar (7) of the said cylinder (T) and used with two hands, at least one control unit (2) controlling operation of the said hand unit (1), and at least one pedal (3) enabling the user to control the operation of the hand unit with his foot. In the cylinder hole-making system according to the present invention, the hand unit (1) is held and controlled with two hands and a drilling command is provided by means of a pedal (3) and thus the users are allowed to control the hand unit (1) in a more reliable manner. Hence, user-related errors are minimized in the drilling process.