Firework Rocket Sleeve Segmentation for Filling Access
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Solution Overview
Problem
The existing method for producing fireworks rockets makes it difficult to fill the pyrotechnic effect set due to a reduction in the inner diameter of the opening at the open end of the sleeve, which restricts the size of the effect set that can be inserted.
Innovation Solution
The method involves producing a fireworks rocket with a sleeve that has two openings, one of which maintains its original wide inner diameter before forming the base area, allowing for easier filling, and the other maintains its wide inner diameter before forming the cap area, enabling larger effect sets to be filled through these openings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the edge of the sleeve is crimped inwards to form a flanged edge for mounting on the propellant tube, then the sleeve can be tightly mounted on the propellant tube, but the inner diameter of the opening at the open end of the sleeve is reduced making filling of the effect set more difficult
Solution Approach 1:
The invention divides the sleeve into two distinct end regions: a first end region that forms a flanged edge for mounting on the propellant tube, and a second end region that remains open without crimping to serve as the filling opening. This segmentation allows each end to have different functional characteristics - the first end provides secure mounting while the second end maintains easy access for filling effect sets.
2Strength
If the opening at the open end of the sleeve is narrowed by crimping to improve mounting security, then the sleeve mounts more securely on the propellant tube, but larger effect sets cannot be inserted
Solution Approach 1:
The sleeve is segmented into two functional ends: the first end region is crimped to form a flanged edge that provides secure mounting on the propellant tube, while the second end region is left open and uncrimped to accommodate larger effect sets for filling. This segmentation resolves the contradiction by allowing each end to optimize for its specific function.
3Ease of manufacture
If the sleeve is formed with a single open end requiring crimping, then the manufacturing process is simplified, but the filling operation becomes more difficult
Solution Approach 1:
The sleeve is manufactured as a single piece but is segmented into two end regions with different configurations: the first end region is crimped to form a flanged edge for mounting, while the second end region remains open to facilitate efficient filling operations. This approach maintains manufacturing simplicity while improving filling efficiency.
Data Source
Figure 1~3
Figure 4~9
Figure 10~12
AI summary
The invention relates to a method for producing a firework rocket (10), which comprises - a housing (11) having - a bottom region (11b); - a cap region (11k); - a main region (11h) which connects the bottom region to the cap region and surrounds an interior (11i) of the housing; - an effect charge (12) which is arranged in the housing interior; wherein - a case (14) is provided, having - a first end region (14b) which surrounds a first opening (141) of the case; - a second end region (14k) which surrounds a second opening (142) of the case; - a main region (14h) which connects the first end region to be second end region and surrounds an interior (14i) of the case; - the effect charge is filled into the case interior through the first opening and/or the second opening; - the bottom region is formed from the first end region; - the cap region is formed from the second end region; - the filling operation takes place prior to forming the bottom region and/or prior to forming the cap region. This makes it possible for the effect charge to be filled more simply. The invention also relates to a firework rocket which is produced by the method, comprising - a housing having - a bottom region; - a cap region; - a main region which connects the bottom region to the cap region and surrounds an interior of the housing; - an effect charge which is arranged in the housing interior.