Front-Back Paper Reel System for Live-Fire Training
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Solution Overview
Problem
Current target paper changing systems for military and police live-fire training are inefficient, laborious, and lack remote control capabilities, with issues in paper collection and release accuracy and management efficiency.
Innovation Solution
A target paper changing machine with front-back arranged paper releasing and collecting boxes, equipped with adjustable speed motors, steering drums, and an accurate paper feeding mechanism using rivets, counting disks, and through-beam laser sensors for precise control, along with a bulletproof structure for safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If devices for collecting and releasing target paper are arranged at the back on the same side, then the structure is simplified, but the target paper tends to become entangled at the collecting end and releasing end
Solution Approach 1:
The patent divides the paper feed path into separate front and back sections with dedicated releasing and collecting boxes positioned at opposite ends. This segmentation prevents the paper from crossing itself and becoming entangled, while maintaining structural organization through modular box designs.
Solution Approach 2:
The patent transitions from a single-sided back arrangement to a front-back dimensional arrangement, positioning the releasing box at the front and collecting box at the back. This spatial reconfiguration eliminates paper entanglement by creating a linear feed path that avoids self-intersection.
2Device complexity
If target paper is directly wound around the reel, then the structure is simple, but there is no positioning and accuracy control over paper feeding
Solution Approach 1:
The patent incorporates a positioning tooth array on the reel that engages with corresponding positioning holes in the target paper before winding begins. This preliminary positioning action ensures accurate paper alignment and feeding control, preventing cumulative positioning errors during the winding process.
Solution Approach 2:
The patent introduces positioning teeth and positioning holes as intermediary elements between the reel and target paper. These intermediaries provide precise mechanical engagement and positioning, enabling accurate paper feeding control without complicating the overall reel structure.
3Ease of operation
If manual target paper changing is used, then operational flexibility is maintained, but trainees must leave and unload magazines ensuring environmental safety, and management efficiency is extremely low
Solution Approach 1:
The patent implements an automated target paper changing system where the motor-driven reel automatically feeds and collects target paper without human intervention. Trainees remain at their stations throughout the process, and the system autonomously manages paper replacement, dramatically improving management efficiency and safety.
Solution Approach 2:
The patent replaces the manual mechanical paper changing process with an automated motor-driven reel system. This substitution eliminates the need for trainees to leave their positions or handle magazines manually, while the system maintains operational flexibility through automated control mechanisms.
4Ease of operation
If upright or slide-rail target paper changing is used, then target presentation is improved, but the changing operation is tedious and changing time is long
Solution Approach 1:
The patent enables continuous target paper feeding through the motor-driven reel system that automatically winds and unwinds paper without interruption. The seamless paper supply eliminates the stopping and manual changing operations required by upright or slide-rail systems, significantly reducing changing time while maintaining target presentation quality.
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 machine ensures accurate and efficient paper feeding, reduces entanglement, and provides remote control capabilities, enhancing training efficiency and safety with adjustable tension and adaptable roll changing mechanisms.
Implementation Method 1
through-beam laser sensors for precise control
Data Source
AI summary
A target paper changing machine includes a paper releasing box, a paper collecting box, paper releasing equipment, paper collecting equipment, a backing plate assembly, target paper, an accurate paper feeding mechanism and a system control unit. The paper releasing box and the paper collecting box are arranged in parallel front and back. The backing plate assembly is arranged between the paper releasing box and the paper collecting box and are fixedly arranged above the two boxes. The paper releasing equipment is arranged in the paper releasing box, and the paper collecting equipment is arranged in the paper collecting box. One end of the target paper is connected with the paper releasing equipment, and the other end bypasses the backing plate assembly and is connected with the paper collecting equipment. The accurate paper feeding mechanism is arranged on the paper releasing equipment and/or the paper collecting equipment.