7results about "Fuse detonation" patented technology

A coreless-coil shock tube package system includes a "coreless" bundle of shock tubing, meaning that the tubing is not wrapped around a spool. The bundle may be a generally cylindrical coil of shock tubing. Optionally, two washer-like end plates abut the ends of the tubing coil for axial support. A self-adhesive tape covering partially covers the coil and end plates. A detonator is attached to one end of the tubing and lies tucked into the coil, through an end plate, for storage and transport. An igniter is attached to the tubing's other end. In use, the detonator is removed from the coil and attached to an explosive device. Then, the package is pulled away from the detonator and explosive, thereby uncoiling the tubing through the end plate for deployment. The igniter is actuated for igniting the shock tubing and activating the detonator and explosive.

The application relates to the production technology field of detonating cord, and particularly discloses a multi-stage explosion-proof and precise temperature control wrapping structure of a detonating cord manufacturing machine, which comprises a medicine bucket unit, an explosion-proof unit, an inner layer wrapping unit, a middle layer wrapping unit, an outer layer wrapping unit, a detonating cord steering and wire diameter detection unit and a PLC control module; the explosion-proof unit is installed below the medicine bucket unit and is used for clamping the rubber tube of the medicine bucket unit; the inner layer wrapping unit, the middle layer wrapping unit and the outer layer wrapping unit are all provided with temperature sensors for detecting the temperature during wire wrapping; the detonating cord steering and wire diameter detection unit comprises a wire diameter detector; the explosion-proof unit, the temperature sensors and the wire diameter detector are all connected with the PLC control module; the wire wrapping temperature is detected in real time; the wire wrapping temperature is alarmed and stopped when exceeding the safety range; the diameter of the detonating cord is monitored in real time; the diameter is alarmed and stopped when exceeding the safety value, and the temperature sensors are activated for secondary checking; if the temperature is abnormal, the explosion-proof unit is started, continuous explosion is effectively avoided, and the safety protection performance is good.

Enhanced combustion ignition cord: An ignition cord for the combustion of a propellant charge contained within a cartridge case, said cord consisting of a core comprising a pyrotechnical material and surrounded by a sheath, characterized in that the sheath consists of two concentric cylindrical tubes between which is arranged a free-flowing powdered energy material. The two tubes are made of an inert polymer material or are based on an extruded powdered energy material, or alternatively, one of the tubes may be made of an inert polymer material and the other of an extruded powdered energy material.

The utility model discloses a detonating cord manufacturing cord package winding device, and relates to detonating cord technical field, including the winding line disc, the top of winding line disc is fixed with a plurality of steel drill in round array, the outer surface rotationally connected with rotating seat of steel drill, the surface of rotating seat is equipped with the wire drum, the top insertion of steel drill has the fixed disc, the bottom of fixed disc is provided with the friction disc of wire drum resistance, the utility model discloses in the process of winding, the friction between friction disc and wire drum ensures wire drum steady rotation, avoids the problem of uneven winding caused by wire drum skidding or rotation not smooth, thereby guarantee the compactness and stability of detonating cord winding, effectively promoted the detonation performance of detonating cord.

The invention discloses a flexible detonating cord 3D printing formula and a preparation method. A cladding formula of a flexible detonating cord comprises 85-90 parts by mass of modified acrylate, 3-5 parts by mass of 1, 6-hexanediol diacrylate and 5-8 parts by mass of diphenyl phosphine oxide; the core material formula comprises 86 to 94 parts by mass of a basic explosive, 4.5 to 11 parts by mass of hydroxyl-terminated polybutadiene, 1 to 2.5 parts by mass of triphenyl bismuth, 0.5 to 1 part by mass of toluene-2, 4-diisocyanate and 30 to 70 parts by mass of a bonding pore-foaming agent. The detonating cord is further prepared by taking the formula as raw materials and adopting photocuring 3D coaxial printing. Core medicine pores are effectively eliminated through a physical synergistic volatilization mechanism, and a firm interpenetrating network structure is formed on a core-shell interface through a chemical copolymerization reaction, so that the technical problems of poor compactness of the core medicine, weak interface bonding and insufficient shell mechanical strength are synchronously solved.

This application relates to the field of detonating cord technology, specifically disclosing a detonating cord making machine. It includes: a modular main frame, an automatic detonation system, a multi-layer wrapping structure, a wire diameter detection module, and an automated control module. The inner, middle, and outer wrapping units, configured using the multi-layer wrapping structure, are each driven by an independent servo motor and a synchronous pulley assembly for independent wrapping operations. Each of the inner, middle, and outer wrapping units is equipped with a tension controller and a temperature sensor. The servo motors, tension controllers, and temperature sensors are connected to a PLC control module to achieve independent automatic control. This solution addresses the technical problem that existing detonating cord making machines, with their high integration, cannot meet the production demands of modern intelligent manufacturing for "continuous, modular, and information-based high-risk processes."