CN113074592A - Copper core lead wire for fireworks and preparation method thereof - Google Patents

Abstract

The invention discloses a copper core lead for fireworks and a preparation method thereof. Including copper core, several cotton yarn and the dampproofing priming of self-control, this copper core lead wire adopts wet process production shaping, pass through between several cotton yarn the dampproofing priming of self-control bonds to arrange and connect as an organic whole to along copper core winding parcel structure, the diameter of its shaping product is 1.6-3mm, and its production step is: mixing and grinding raw material medicines, preparing a special lead moisture-proof agent, preparing a special moisture-proof guiding agent and processing a formed copper core lead. The copper core lead wire has the advantages of oxidation resistance, static electricity prevention, good stability, good flexibility of the copper core, small allowable bending radius, convenience in winding and bending, repeated bending without fracture and good tensile strength, can be fixed by a knob when being used for being connected with N firework products in series, does not fracture the copper core and fracture the wrapped fuse, and solves the potential safety hazard caused by the problems of wire scattering, explosive leakage, fire breaking and the like caused by the fact that the copper core is poor in folding resistance and is repeatedly folded for several times in the prior art.

Description

Copper core lead wire for fireworks and preparation method thereof

Technical Field

The invention relates to a copper core lead for fireworks and a preparation method thereof, belonging to the technical field of lead processing.

Background

In the prior art, the safety lead is made by taking pyrotechnic composition as a medicine core and cotton paper as a wrapping object, an outer weaving layer is woven, a varnish coating is arranged outside the outer weaving layer, a film coating layer is coated outside the varnish coating, or a waterproof film pipe is sleeved outside a lead body, or an outer layer is a thin pipe formed by plasticized double-base gunpowder to form the lead, and the safety lead has the following defects that: 1. the lead varnish coating is coated with a film coating layer or a waterproof film tube, when the lead is connected with the firework paper tube, lead paper and paint attached to the outside can be extruded, the strength of the lead is reduced, the reliability of the lead inserted into the paper tube is influenced, the lead has poor folding resistance, and the phenomena of wire scattering, medicine leakage, fire breaking and the like can occur after the lead is repeatedly folded; 2. adopt the lead wire that plasticized double-base powder constitutes the thin tube and constitutes, can extrude the graininess powder in the bad lead wire, influence the change of lead wire inner structure, compress tightly the compaction with the medicine in the lead wire, some original characteristic factors of lead wire have been changed, the effect that the lead wire was touched off has been influenced, especially to some timing lead wires, thereby the time that the inside graininess powder of pressure damage lead wire can change the lead wire burning loses regularly effect, directly influence the effect of touching off regularly, probably cause the incident, there is the potential safety hazard. 3. The varnish coating on the surface of the lead is easily dissolved by an organic solvent, so that the cotton thread wrapping gunpowder is loosened until the powder leaks, the phenomenon of fire cutoff occurs, and the safe setting off and storage and transportation are not facilitated.

Disclosure of Invention

The invention aims to provide a copper core lead for fireworks, which is not broken after being repeatedly bent, has good tensile strength, convenient ignition and good safety, and a preparation method thereof.

In order to achieve the purpose, the invention is realized by the following technical solutions:

the utility model provides a copper core lead wire for fireworks, mainly used all kinds of fireworks display, cold light fireworks, shelf fireworks are touched off and are used which characterized in that: the copper core lead wire is produced and formed by a wet method, the cotton yarns are integrally connected by bonding and arranging the self-made moisture-proof guiding agent, the copper core is wound and wrapped along the copper core, and the diameter of a formed product is 1.6-3 mm.

Further, the moisture-proof primer comprises potassium nitrate, sulfur, charcoal and a self-made special lead moisture-proof agent, and the moisture-proof primer comprises the following components in parts by weight: 50-75 parts of potassium nitrate, 5-20 parts of sulfur, 5-15 parts of charcoal and a proper amount of self-made special lead moisture-proof agent.

Further, the self-made special lead wire moisture-proof agent is prepared from nitrocotton, a double-base pipe, copper propionate and ethanol, and the self-made special lead wire moisture-proof agent comprises the following components in parts by weight: 5-10 parts of nitrocotton, 10-20 parts of double-base pipe, 15-25 parts of copper propionate and 45-60 parts of ethanol.

Further, the diameter of the copper core is 0.3-0.5 mm.

Further, the cotton yarn is in a structure that at least 10 cotton yarns wrapped with the medicine are wound and wrapped with the copper core.

Compared with the leather paper lead and the yarn safety lead in the prior art, the copper core lead has better oxidation resistance, static resistance and stability, and has the advantages of quick, convenient and firm insertion connection with firework products, no breakage and explosive scattering due to good flexibility, small allowable bending radius, convenient winding and bending, good tensile strength after repeated bending and certain hardness of the copper core lead, particularly 360-degree rotary twisting fixation when being used for being connected with N firework products in series, no breakage of the copper core and no explosive wrapping by breakage, thereby solving the potential safety hazards caused by the problems of wire scattering, explosive leakage, fire breaking and the like caused by poor folding resistance, no rigidity, repeated folding and the like of the lead in the prior art.

The double-base tube or double-base sheet in the self-made special lead moisture-proof agent is a novel colloidal agent which is formed by reprocessing recycled retired double-base tube-shaped or sheet-shaped propellant powder, has the functional characteristics of high explosion power, strong water resistance, high density, easy charging, no crystal precipitation, long quality guarantee period and the like, and also has the advantages of stable physicochemical properties, high safety performance of combination and compatibility with other medicaments for fireworks, wide application range of processed products and the like.

A preparation method of copper core lead wire for fireworks is mainly used for setting off various fireworks, cold light fireworks and frame fireworks, and comprises a copper core and a plurality of cotton yarns wrapped with moisture-proof priming, wherein the copper core lead wire is produced and formed by a wet method, and the diameter of a formed product is 1.6-3 mm; the moisture-proof lead medicine comprises potassium nitrate, sulfur, charcoal and a self-made special lead moisture-proof agent, wherein the mixture of the components is mixed and processed according to the proportion, and the specific method comprises the following steps:

step 1, mixing and grinding raw material medicines: according to 75 parts by weight of potassium nitrate, 15 parts by weight of sulfur and 10 parts by weight of charcoal, the potassium nitrate is fully mixed and ground into powder, wherein the potassium nitrate can be replaced by potassium perchlorate according to the needs of users;

step 2, preparing a special lead moisture-proof agent: preparing 7 parts by weight of nitrocotton, 15 parts by weight of double-base pipe, 20 parts by weight of copper propionate and 58 parts by weight of ethanol into liquid paste according to the component proportion of the special lead wire moisture-proof agent to obtain the special lead wire moisture-proof agent, wherein the double-base pipe or double-base plate is used for substitution, and the self-made special lead wire moisture-proof agent has multiple functions of moisture resistance, water resistance, stability, adhesion and the like after mixing the components of the raw materials of the lead wire;

step 3, preparing a special moisture-proof primer: manually or mechanically stirring the mixed powder ground in the step 1 and the special lead moisture-proof agent prepared in the step 2 to prepare pasty wet powder, namely the self-made special moisture-proof lead moisture-proof agent;

step 4, forming the copper core lead: the specific process flow of the molding is as follows:

a. adding a cotton yarn medicine wrapping device in front of the existing production line equipment, putting a self-made special moisture-proof guiding medicine into the cotton yarn medicine wrapping device, respectively penetrating 16 cotton yarns into the medicine wrapping device individually, and then penetrating 1 copper core into the middle of 16 cotton yarns wrapped with the special moisture-proof guiding medicine, so that the 16 cotton yarns wrapped with the special moisture-proof guiding medicine are arrayed to wrap the copper cores, and particularly paying attention to the fact that a pasty special moisture-proof guiding medicine structure must be uniformly adhered between the cotton yarns;

b. the cotton yarn stuck with the pasty special moisture-proof guiding agent and the copper core are axially wound in a traction winding mode to enable 16 cotton yarn coated with the agent to be wound around the copper core with the diameter of 0.35mm to be coated into a copper core lead rudiment, and the rudiment of the copper core lead is prepared into a copper core lead semi-finished product with the diameter of 1.6-3mm by a traction, stretching and winding processing method by using an extrusion forming mould in the existing production line equipment;

c. drying the processed copper core lead semi-finished product to a certain degree to ensure that the copper core lead semi-finished product is not deformed;

d. unfolding the formed copper core lead, airing, drying to obtain a finished product, and packaging and forming;

e. cutting the raw materials into a single copper core lead finished product with a certain size or a rolled copper core lead finished product for fireworks according to the requirements of customers;

f. packaging a finished product: and finally, classifying, packaging and warehousing the qualified finished copper core lead wires according to different specifications.

Advantageous effects

The invention has the main advantages and beneficial effects that:

1. due to the adoption of the technical scheme, compared with a paper-covered lead and a yarn safety lead in the prior art, the copper core lead has better oxidation resistance, static resistance and stability, and has the advantages of high flexibility, small allowable bending radius, convenience in winding and bending, no fracture after repeated bending, high tensile strength and certain hardness, so that the copper core lead is quickly, conveniently and firmly inserted and connected with firework products, is not easy to break and scatter chemicals, can be particularly fixed by being twisted at 360 degrees when being connected with N firework products in series, does not break the copper core and the broken and wrapped chemicals, and solves the potential safety hazards caused by the problems of poor breaking resistance, no rigidity, wire scattering, chemical leakage, fire breaking and the like of the lead in the prior art due to repeated folding.

2. The copper core lead prepared by the technical scheme of the invention adopts the copper core as the lead carrier, so that the copper core lead has the advantages of fast heat transfer, large spark, good ignition, good waterproof and moisture-proof performance, stable storage performance of a finished product, lower production cost, good environmental protection and high safety performance when being matched and connected with a firework product in the combustion process.

3. The copper core lead wire used in the invention is proved by practical use to be made of copper material, the copper core has high mechanical strength, can bear larger mechanical tension, brings great convenience in mechanical production, and creates conditions for mechanical processing.

4. According to the copper core lead prepared by the technical scheme, as the double base tubes or the double substrates used by the special lead moisture-proof agent are used as novel colloidal gunpowder, the copper core lead has the characteristics of good firepower, strong water resistance, convenience in charging and long quality guarantee period, the product quality is stable, the production process is safe, and the potential safety hazard brought in the production process is reduced.

Drawings

Fig. 1 is a front view of a structure provided by an embodiment of the present invention.

Reference is made to the accompanying drawings in which:

in fig. 1: 1-copper core, 2-cotton yarn and 3-self-made moisture-proof primer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention is implemented by the following preferred embodiments, and the specific structural characteristics are as follows:

the utility model provides a copper core lead wire for fireworks, mainly used all kinds of fireworks display, cold light fireworks, shelf fireworks are touched off and are used which characterized in that: the copper core lead wire is produced and formed by a wet method, the cotton yarns are integrally connected by bonding and arranging the self-made moisture-proof guiding agent, the copper core is wound and wrapped along the copper core, and the diameter of a formed product is 1.6-3 mm.

Preferably, the moisture-proof primer comprises potassium nitrate, sulfur, charcoal and a self-made special lead moisture-proof agent, and the moisture-proof primer comprises the following components in parts by weight: 50-75 parts of potassium nitrate, 5-20 parts of sulfur, 5-15 parts of charcoal and a proper amount of self-made special lead moisture-proof agent.

Preferably, the homemade special lead wire moisture-proof agent is prepared from nitrocotton, a double-base pipe, copper propionate and ethanol, and the components are prepared according to the following weight parts: 5-10 parts of nitrocotton, 10-20 parts of double-base pipe, 15-25 parts of copper propionate and 45-60 parts of ethanol.

More preferably, the diameter of the copper core is 0.3-0.5 mm.

More preferably, the cotton yarn is in a structure that at least 10 cotton yarns wrapped with the medicine are wound and wrapped with the copper core.

Compared with the leather paper lead and the yarn safety lead in the prior art, the copper core lead has better oxidation resistance, static resistance and stability, and has the advantages of quick, convenient and firm insertion connection with firework products, no breakage and explosive scattering due to good flexibility, small allowable bending radius, convenient winding and bending, good tensile strength after repeated bending and certain hardness of the copper core lead, particularly 360-degree rotary twisting fixation when being used for being connected with N firework products in series, no breakage of the copper core and no explosive wrapping by breakage, thereby solving the potential safety hazards caused by the problems of wire scattering, explosive leakage, fire breaking and the like caused by poor folding resistance, no rigidity, repeated folding and the like of the lead in the prior art.

The double-base tube or double-base sheet in the self-made special lead moisture-proof agent is a novel colloidal agent which is formed by reprocessing recycled retired double-base tube-shaped or sheet-shaped propellant powder, has the functional characteristics of high explosion power, strong water resistance, high density, easy charging, no crystal precipitation, long quality guarantee period and the like, and also has the advantages of stable physicochemical properties, high safety performance of combination and compatibility with other medicaments for fireworks, wide application range of processed products and the like.

A preparation method of copper core lead wire for fireworks is mainly used for setting off various fireworks, cold light fireworks and frame fireworks, and comprises a copper core and a plurality of cotton yarns wrapped with moisture-proof priming, wherein the copper core lead wire is produced and formed by a wet method, and the diameter of a formed product is 1.6-3 mm; the moisture-proof lead medicine comprises potassium nitrate, sulfur, charcoal and a self-made special lead moisture-proof agent, wherein the mixture of the components is mixed and processed according to the proportion, and the specific method comprises the following steps:

step 1, mixing and grinding raw material medicines: according to 75 parts by weight of potassium nitrate, 15 parts by weight of sulfur and 10 parts by weight of charcoal, the potassium nitrate is fully mixed and ground into powder, wherein the potassium nitrate can be replaced by potassium perchlorate according to the needs of users;

step 2, preparing a special lead moisture-proof agent: preparing 7 parts by weight of nitrocotton, 15 parts by weight of double-base pipe, 20 parts by weight of copper propionate and 58 parts by weight of ethanol into liquid paste according to the component proportion of the special lead wire moisture-proof agent to obtain the special lead wire moisture-proof agent, wherein the double-base pipe or double-base plate is used for substitution, and the self-made special lead wire moisture-proof agent has multiple functions of moisture resistance, water resistance, stability, adhesion and the like after mixing the components of the raw materials of the lead wire;

step 3, preparing a special moisture-proof primer: manually or mechanically stirring the mixed powder ground in the step 1 and the special lead moisture-proof agent prepared in the step 2 to prepare pasty wet powder, namely the self-made special moisture-proof lead moisture-proof agent;

step 4, forming the copper core lead: the specific process flow of the molding is as follows:

a. adding a cotton yarn medicine wrapping device in front of the existing production line equipment, putting a self-made special moisture-proof guiding medicine into the cotton yarn medicine wrapping device, respectively penetrating 16 cotton yarns into the medicine wrapping device individually, and then penetrating 1 copper core into the middle of 16 cotton yarns wrapped with the special moisture-proof guiding medicine, so that the 16 cotton yarns wrapped with the special moisture-proof guiding medicine are arrayed to wrap the copper cores, and particularly paying attention to the fact that a pasty special moisture-proof guiding medicine structure must be uniformly adhered between the cotton yarns;

b. the cotton yarn stuck with the pasty special moisture-proof guiding agent and the copper core are axially wound in a traction winding mode to enable 16 cotton yarn coated with the agent to be wound around the copper core with the diameter of 0.35mm to be coated into a copper core lead rudiment, and the rudiment of the copper core lead is prepared into a copper core lead semi-finished product with the diameter of 1.6-3mm by a traction, stretching and winding processing method by using an extrusion forming mould in the existing production line equipment;

c. drying the processed copper core lead semi-finished product to a certain degree to ensure that the copper core lead semi-finished product is not deformed;

d. unfolding the formed copper core lead, airing, drying to obtain a finished product, and packaging and forming;

e. cutting the raw materials into a single copper core lead finished product with a certain size or a rolled copper core lead finished product for fireworks according to the requirements of customers;

f. packaging a finished product: and finally, classifying, packaging and warehousing the qualified finished copper core lead wires according to different specifications.

After being used for a plurality of times, the result is that obvious guiding powder can be seen to leak after the paper lead and the safety lead which are not wrapped by the copper core are continuously bent for 4 times in 360 degrees, and the lead which is wrapped by the copper core is repeatedly and continuously bent for two hundred times in 360 degrees, no external crack of the copper core lead is seen, no medicine powder leaks, and the copper core lead is intact. And a waterproof example is verified, a small section of the copper core lead wire is soaked in water for ten minutes, then inserted into a firework effect tube to ignite, and after the lead wire is ignited, the spark is normal, the effect medicine in the effect tube is ignited rapidly, and the firework is ignited normally.

The above-described embodiments of the present invention are only for illustrating the technical solutions of the present invention and should not be construed as limiting the present invention in any way. It will be understood by those skilled in the art that the present invention has various known material substitutions and alterations without departing from the spirit of the invention, and all such substitutions and alterations are intended to be encompassed within the scope of the invention.

Claims (6)

1. The utility model provides a copper core lead wire for fireworks, mainly used all kinds of fireworks display, cold light fireworks, shelf fireworks are touched off and are used which characterized in that: including copper core (1), several cotton yarn (2) and self-control dampproofing primer (3), this copper core lead wire adopts wet process production shaping, pass through between several cotton yarn (2) self-control dampproofing primer (3) bonding arrangement is connected as an organic whole to along copper core (1) winding parcel structure, the diameter of its shaping product is 1.6-3 mm.

2. The copper core lead for fireworks according to claim 1, characterized in that: the moisture-proof primer (3) comprises potassium nitrate, sulfur, charcoal and a self-made special lead moisture-proof agent, and the moisture-proof primer comprises the following components in parts by weight: 50-75 parts of potassium nitrate, 5-20 parts of sulfur, 5-15 parts of charcoal and a proper amount of self-made special lead moisture-proof agent.

3. The copper core lead for fireworks according to claim 2, characterized in that: the self-made special lead wire moisture-proof agent is prepared from nitrocotton, a double-base pipe, copper propionate and ethanol, and the self-made special lead wire moisture-proof agent comprises the following components in parts by weight: 5-10 parts of nitrocotton, 10-20 parts of double-base pipe, 15-25 parts of copper propionate and 45-60 parts of ethanol.

4. The copper core lead for fireworks according to claim 1, characterized in that: the diameter of the copper core (1) is 0.3-0.5 mm.

5. The copper core lead for fireworks according to claim 1, characterized in that: the cotton yarn (2) is in a structure that at least 10 cotton yarns wrapped with the medicine are wound and wrapped with the copper core.

6. A method for preparing copper core lead wire for fireworks is mainly used for setting off various display shells, cold light fireworks and frame fireworks, and is characterized in that: the anti-moisture cotton yarn comprises a copper core (1) and a plurality of cotton yarns (2) wrapped with moisture-proof guiding agents (3), wherein the copper core guiding wires are produced and formed by a wet method, and the diameter of a formed product is 1.6-3 mm; the moisture-proof lead wire medicament (3) comprises potassium nitrate, sulfur, charcoal and a self-made special lead wire moisture-proof agent, wherein the mixture of the components is formed by mixing and processing according to the proportion, and the specific method comprises the following steps:

step 1, mixing and grinding raw material medicines: according to 75 parts by weight of potassium nitrate, 15 parts by weight of sulfur and 10 parts by weight of charcoal, the potassium nitrate is fully mixed and ground into powder, wherein the potassium nitrate can be replaced by potassium perchlorate according to the needs of users;

step 2, preparing a special lead moisture-proof agent: preparing 7 parts by weight of nitrocotton, 15 parts by weight of double-base pipe, 20 parts by weight of copper propionate and 58 parts by weight of ethanol into liquid paste according to the component proportion of the special lead wire moisture-proof agent to obtain the special lead wire moisture-proof agent, wherein the double-base pipe or double-base plate is used for substitution, and the self-made special lead wire moisture-proof agent has multiple functions of moisture resistance, water resistance, stability, adhesion and the like after mixing the components of the raw materials of the lead wire;

step 3, preparing a special moisture-proof primer: manually or mechanically stirring the mixed powder ground in the step 1 and the special lead moisture-proof agent prepared in the step 2 to prepare pasty wet powder, namely the self-made special moisture-proof lead moisture-proof agent;

step 4, forming the copper core lead: the specific process flow of the molding is as follows:

a. adding a cotton yarn medicine wrapping device in front of the existing production line equipment, putting a self-made special moisture-proof guiding medicine into the cotton yarn medicine wrapping device, respectively penetrating 16 cotton yarns into the medicine wrapping device individually, and then penetrating 1 copper core into the middle of 16 cotton yarns wrapped with the special moisture-proof guiding medicine, so that the 16 cotton yarns wrapped with the special moisture-proof guiding medicine are arrayed to wrap the copper cores, and particularly paying attention to the fact that a pasty special moisture-proof guiding medicine structure must be uniformly adhered between the cotton yarns;

b. the cotton yarn stuck with the pasty special moisture-proof guiding agent and the copper core are axially wound in a traction winding mode to enable 16 cotton yarn coated with the agent to be wound around the copper core with the diameter of 0.35mm to be coated into a copper core lead rudiment, and the rudiment of the copper core lead is prepared into a copper core lead semi-finished product with the diameter of 1.6-3mm by a traction, stretching and winding processing method by using an extrusion forming mould in the existing production line equipment;

c. drying the processed copper core lead semi-finished product to a certain degree to ensure that the copper core lead semi-finished product is not deformed;

d. unfolding the formed copper core lead, airing, drying to obtain a finished product, and packaging and forming;

e. cutting the raw materials into a single copper core lead finished product with a certain size or a rolled copper core lead finished product for fireworks according to the requirements of customers;

f. packaging a finished product: and finally, classifying, packaging and warehousing the qualified finished copper core lead wires according to different specifications.

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