CN108469205B - A kind of infuse draws the filling flow production line of firecrackers drying - Google Patents
A kind of infuse draws the filling flow production line of firecrackers drying Download PDFInfo
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- CN108469205B CN108469205B CN201810286188.9A CN201810286188A CN108469205B CN 108469205 B CN108469205 B CN 108469205B CN 201810286188 A CN201810286188 A CN 201810286188A CN 108469205 B CN108469205 B CN 108469205B
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- filling
- firecrackers
- container
- firecracker cake
- production line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B4/00—Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes
- F42B4/30—Manufacture
Abstract
Draw firecrackers the invention discloses a kind of note and dries filling flow production line, the assembly line constituted including the conveyer belt and synchronous conveying system linking that transport firecracker cake, online drying mechanism and filling mechanism are sequentially distributed along assembly line, the opposite two sides of the framework for tying up frame of firecracker cake are respectively equipped with the hooking part for deviateing firecracker cake center line；The synchronous conveying system of online drying mechanism, which does rotary motion and hooks hook taking pendant firecracker cake is made to be converted to vertical state, passes through rapid draing in oven cavity；Sieve area is set on the container of filling mechanism；Material extrusion piece is scraped in the rotation of device matrix and scraping blade composition in container, and matrix is the frame structure with hollow portion.Rotation scrape material extrusion piece by material from sieve extrusion fall into lower section firecracker cake in complete it is filling.Firecrackers assembly line automatic production device can be completed by providing one kind, and the efficient production of drying, filling process is realized on the basis of ensuring safety.
Description
Technical field
The present invention relates to a kind of notes of completing to draw the assembly line that firecrackers produce automatically.
Background technique
In firecrackers production, need a certain number of single firecracker cylinders being bundled into hexagon, parallel four according to manufacture craft
The aggregate of side shape or other shapes, referred to as firecracker cake.It is all to be carried out as unit of a firecracker cake in subsequent production process
Relevant working process, for example plant to draw or infuse and draw (drying), back cover mud is filling, powder of firecracker is filling, sealing compound is filling etc..
But in the prior art, these processes are difficult to form efficient flow line production mode:
Such as in lead process, the lead of firecrackers is divided into that cultivation is drawn and note draws two ways.It is that cut out finished product lead be small that cultivation, which is drawn,
Section is planted in firecracker cylinder.Note, which draws firecrackers, to be made of wet process, and the medicinal solvent adjustment that will ignite is slurry, and injecting slurry is allowed to
Linear biography fire lead is formed on firecracker cylinder inner wall.Firecrackers note needs to be dried after drawing, in the prior art, since drying is time-consuming
Too long (at least 4 hours), it is difficult to realize online drying, it can only be using baking room drying mode under line.It not only needs to come firecracker cake
Backhaul it is defeated take time and effort, and it is also possible to because carry lead to quality problems.
For another example the filling process of powder of firecracker, the filling gunpowder of firecrackers is breakneck process.It is main it is dangerous from
The sensibility of gunpowder and filling caused gunpowder dust, these factors cause flow line production security risk more, dangerous very big.
In addition, the existing of firecracker cake ties up mode such as rope, rubber band or Plastic Bandage etc., although can complete to tie up sizing
Work, but in subsequent automation, in mechanization production process, be tied molding firecracker cake and lack grabbing for operation
Hand causes as following drawbacks: can only transport by single conveyer belt, limit the development of relevant device；It is needing to firecracker cake
Posture when being adjusted, some automated machine operations can only can not be carried out to firecracker cake as needed by having been manually done,
Influence production efficiency.
Summary of the invention
In order to solve above-mentioned drawback, the technical problem to be solved by the invention is to provide one kind can complete firecrackers flowing water
Line automatic production device.Efficiently production is realized on the basis of ensuring safety.In order to solve the above-mentioned technical problem, the present invention adopts
Technical solution is, a kind of to infuse the filling flow production line of drying for drawing firecrackers, which is characterized in that the biography including transporting firecracker cake
It send band and synchronous conveying system to be connected the assembly line constituted, online drying mechanism and filling mechanism is sequentially distributed along assembly line,
In,
The online drying mechanism includes the conveyer belt for transporting firecracker cake, further includes two for being located at conveyor belt two sides
Synchronous conveying system, synchronous conveying system are connected with conveyer belt, and synchronous conveying system is located in oven cavity；The whip is tied up in sizing
The opposite two sides of the framework for tying up frame of big gun cake are respectively equipped with hooking part, and the hooking part is in the position for deviateing firecracker cake center line
It is oppositely arranged；At synchronous conveying system beginning, the hooking part is hooked on synchronous conveying system, at the end of synchronous conveying system
End, hooking part and synchronous conveying system are detached from.
Preferably, the synchronous conveying system is selected from sprocket wheel chain mechanism or synchronous conveyer band.
By adopting the above technical scheme, two hooking parts are hooked on two synchronous conveying systems simultaneously, thus synchronous transport
Mechanism takes away firecracker cake and integrally does rotary motion, after firecracker cake rises vacantly, sets because two hooking part disalignments are opposite
It sets, firecracker cake is based on self weight and rotates around two hook points, realizes horizontal (firecracker cylinder bottom end mouth down) to vertical (firecrackers automatically
Cylinder side wall downward) posture changing.Drying hot wind in oven cavity can pass through two port convection drying cylinders of firecrackers cylinder
Interior note lead, greatlys improve drying efficiency.After firecracker cake passes through oven cavity, with two synchronous conveying system ends
Revolution, hooking part and two synchronous conveying systems break off relations (disengaging) put down dry firecracker cake, dry firecracker cake can be placed in biography
It send to take and send to subsequent processing.Two synchronous conveying systems hook that remains in operation takes next firecracker cake after unhook.Such circulation industrial
Make.The device realizes the posture conversion of firecracker cake automatically；Drying efficiency is greatly improved, so that note draws the drying time of firecrackers
It shortens within 1 hour, to realize online dry, improves production efficiency and the quality of production, reduce production cost.Also have simultaneously
Have the advantages that occupied area is few, safe and reliable.
Preferably, which includes the Liang Tiao sprocket wheel chain mechanism that horizontal position is higher than transmission belt, two sprocket wheel chain machines
Structure is located at the two sides of conveyer belt, and the beginning of sprocket wheel chain mechanism is Chong Die with transmission end of tape, and sprocket wheel chain mechanism is located at length
In the oven cavity of strip, the chain of sprocket wheel chain mechanism is circumferentially uniformly distributed several hook A parts；The firecracker cake is tied up in sizing
The opposite two sides of framework for tying up frame, which are respectively equipped with, hooks B part, and described to hook B part opposite in the position for deviateing firecracker cake center line
Setting；The hook A part is correspondingly arranged with B part is hooked, and chain and its hook A part do rotary motion, in sprocket wheel chain mechanism
Beginning hooks A part and hooks hook taking extension B part, hooks A part in the end of sprocket wheel chain mechanism and hooks B part and breaks off relations.
The oven can heat light bulb (i.e. super bath lamp as heat source, such as quartz infrared cooker using arbitrary heating method
Bubble).Preferably, the oven is using circulating heat conduction liquid as heat source, and the conductive fluid (such as water or conduction oil) is by high-frequency heating
Device heating.It is efficient dry to ensure safety.Preferably, blower is arranged in the oven.To accelerate drying efficiency.Preferably, institute
Stating and tying up frame includes the framework being formed according to preset shape, and the framework is provided with the closed circular of fracture, and incision position, which is equipped with, to be connected
Connection mechanism.The preset shape can be hexagon, parallelogram, circle or other shapes.Fracture and its bindiny mechanism
Effect is, fracture framework to open expansion to make it possible to cover in firecracker cake surrounding, then connected and locked by bindiny mechanism
Tight fracture, so that framework tightly covers the realization on firecracker cake and ties up shapping function.The bindiny mechanism can select band, such as
Common band, reversible band, label band, fixed locking-type band, bolt-type band, weight pulling force band etc..It can also adopt
With following mechanism: the fracture both sides of binding piece are equipped with connecting column, and two connecting columns are connected by elastic component.The elastic component such as rubber band
With spring etc..After firecracker cake is inserted in binding piece, two connecting columns are locked by elastic component.The hooking part can be any satisfaction and hook
The known shape of function.Such as coupler body or hangers.Its role is to constitute to hook the handgrip of extract operation.
The filling mechanism includes the container of the filling object of device, and sieve area is arranged on container, and the distribution of sieve area is several to be penetrated
The sieve pore of container；Material extrusion piece is scraped in device rotation in container, described to revolve the section shape for scraping the shape and container intracavity sieve area of material extrusion piece
Shape is correspondingly arranged；The scraping blade that material extrusion piece includes matrix and is packed in matrix outer rim around working face is scraped in rotation, described matrix be with
The frame structure of hollow portion.
The filling mechanism is referred to as back cover mud filling mechanism for filling back cover mud, and the filling mechanism is used for filling envelope
Mouth agent is referred to as sealing compound filling mechanism, and the filling mechanism is referred to as gunpowder slurry filling mechanism for filling gunpowder slurry.
The wet process that gunpowder slurry filling mechanism is also referred to as powder of firecracker is filling: in half after powder of firecracker and suitable quantity of water mixing
The slurry of dry shape, after being packed into container, rotation is scraped material extrusion piece and is rotated under the action of the drive mechanism, and scraping blade is by gunpowder from sieve pore in rotation
It squeezes out, in the firecrackers for dropping down onto lower section, that is, the gunpowder for completing firecrackers is filling.The wet process that the mechanism realizes powder of firecracker is filling,
The sensitivity for greatly reducing gunpowder avoids the appearance of filling dust, it is ensured that the filling safety of powder of firecracker.Preferably,
Splash guard is equipped with above the upper opening of the container, splash guard is equipped with mesoporous.Preferably, the top of the container is equipped with feed
Bucket.Preferably, the lower section of the container is equipped with and leads medicine chute.
The beneficial effects of the present invention are firecrackers assembly line automatic production device can be completed by providing one kind, true
The efficient production of drying, filling process is realized on the basis of ensuring safety.
Preferably, the filling mechanism includes that the back cover mud filling mechanism, the gunpowder slurry that are sequentially distributed along assembly line are filling
Mechanism and sealing compound filling mechanism.One line completes the filling of the built-in material of all firecrackers.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Detailed description of the invention
Fig. 1 is that the system of 1 flow production line of embodiment is integrally formed schematic illustration；
Fig. 2 is that (horizontal, view direction is for the structural schematic diagram of firecracker cake posture changing in the online drying mechanism of embodiment 1
The left view direction of Fig. 1)；
Fig. 3 be the online drying mechanism of embodiment 1 in firecracker cake posture changing structural schematic diagram (it is vertical, view direction with
Fig. 2 is consistent)；
Fig. 4 is the structural schematic diagram of 1 gunpowder slurry filling mechanism 4 of embodiment；
Fig. 5 is the overlooking structure diagram of 1 gunpowder slurry filling mechanism 4 of embodiment；
Fig. 6 is that embodiment 1 revolves the structural schematic diagram for scraping material extrusion piece；
Fig. 7 is the online drying mechanism operation principle schematic diagram of embodiment 2；
Fig. 8 is the online drying mechanism operation principle schematic diagram of embodiment 3.
Specific embodiment
Embodiment 1: referring to attached drawing 1-6, reflecting a kind of specific structure of the invention, described to infuse the filling stream of drying for drawing firecrackers
Aquatic producing line, the stream that conveyer belt 307, conveyer belt 311 and 302 chain of sprocket wheel, 303 the mechanism linking including transporting firecracker cake are constituted
Waterline is sequentially distributed online drying mechanism and back cover mud filling mechanism 5, gunpowder slurry filling mechanism 4 and sealing compound along assembly line
Filling mechanism 6.One line completes the filling of the built-in material of all firecrackers.Wherein,
For the online drying mechanism referring to attached drawing 1-3, the conveyer belt 307 including transporting firecracker cake 301, further includes horizontal position
Two 302 chain of sprocket wheel, 303 mechanisms higher than transmission belt 307 are set, Liang Tiao sprocket wheel chain mechanism is located at the two of conveyer belt 307
The beginning of side, sprocket wheel chain mechanism is Chong Die with the end of conveyer belt 307, and sprocket wheel chain mechanism is located at the oven 306 of strip
Intracavitary, chain 303 is circumferential to be uniformly distributed several hooks 304.The framework phase for tying up frame 305 of the firecracker cake 301 is tied up in sizing
Pair two sides be respectively equipped with hangers 308, the hangers 308 is oppositely arranged in the position for deviateing 301 center line of firecracker cake.This example
In, it is described to tie up the hexagon framework that frame 305 is sizing, the closed circular that frame 305 is equipped with fracture 104 is tied up, is set at fracture 104
There is bindiny mechanism, the bindiny mechanism can select band, and following mechanism is used in this example: 104 both sides of fracture are equipped with connecting column
102, two connecting columns 102 are by elastic component --- and rubber band 103 connects.Firecracker cake 3 is inserted in tie up frame 305 after, locked by rubber band 103
Tight two connecting column 102.The hook 304 is correspondingly arranged with hangers 308, and chain 303 and its hook 304 do rotary motion, in chain
The beginning hook 304 for taking turns link chain mechanism hooks getting ear 308, and in the end of sprocket wheel chain mechanism, hook 304 breaks off relations with hangers 308.
For the oven 306 using conductive fluid as heat source, conductive fluid circulates heat dissipation in circulating line 310.The conductive fluid by
Heating generator 309 heats.It is efficient dry to ensure safety.Blower is arranged to accelerate drying efficiency in oven 306.
In said mechanism, after completion note draws in each firecracker cylinder in firecracker cake 301, with horizontal posture (301 bottom of firecracker cylinder
Port is downward) beginning of sprocket wheel chain mechanism is sent to by conveyer belt 307, the overlapping above and below the two, two hooks 304 are simultaneously
Hook takes two hangers 308, to take away, firecracker cake 301 is whole to do rotary motion, after firecracker cake 301 rises vacantly, because two
It hooks B part disalignment to be oppositely arranged, firecracker cake is based on self weight and rotates around two hook points, since two hangers 308 exist
The position for deviateing diagonal line 309 is oppositely arranged, and firecracker cake 301 is based on self weight and rotates around hook point, is realized automatically horizontal to vertical
The posture changing of formula (firecracker cylinder side wall is downward).The intracavitary drying hot wind of oven 306 can pass through two ports of firecrackers cylinder
Note lead in convection drying cylinder, greatlys improve drying efficiency.Behind 306 inner cavity of oven that firecracker cake 301 passes through strip,
With the revolution of end chain 303, hook 304 puts down the firecracker cake 301 dried with the unhook of hangers 308 and is placed in conveyer belt 311
On send to subsequent processing.Hook 304 after unhook, which continues to be turned back to beginning with chain 303 to hook again, takes next firecracker cake.Such as
This cycle operation.
The back cover mud filling mechanism 5, gunpowder slurry filling mechanism 4 are identical with the structure of sealing compound filling mechanism 6, same
Filling mechanism for filling material be back cover mud (soil) be exactly back cover mud filling mechanism 5, for filling and sealing agent (admittedly draw
Agent, soil or glue sawdust etc.) it is exactly sealing compound filling mechanism 6, it is exactly gunpowder slurry filling mechanism for filling gunpowder slurry
4.Illustrate its structure and working principle, process by taking gunpowder slurry filling mechanism 4 as an example below.
As shown in Figure 4,5, 6, gunpowder slurry filling mechanism 4 includes the container 404 of device gunpowder slurry, is set on container 404
Sieve area is set, sieve area is distributed several sieve pores 405 for penetrating container 404, and container 404 is in hemisphere in this example, and sieve pore 405 is abound with
On hemisphere.Material extrusion piece is scraped in device rotation in container 404, described to revolve the shape for scraping material extrusion piece and 404 inner cavity sieve area of container
Cross sectional shape is correspondingly arranged；Since the region of setting sieve pore is entire hemisphere in this example, so rotation scrapes material extrusion piece and corresponds to half
It is round --- i.e. hemispheroidal cross sectional shape.Rotation scrapes material extrusion piece and includes matrix 409 and be packed in 409 outer rim of matrix around working face
Scraping blade 410, scraping blade is using the production of more material flexible, such as silica gel.Motor and its reduction gearing mechanism connect 407 band of shaft
The rotation of material extrusion piece is scraped in dynamic rotation, and scraping blade 410 sweeps the sieve area of 404 internal chamber wall of container in rotary course, by gunpowder slurry from sieve pore
405 squeeze out, in the two-way firecracker cylinder for leading the firecracker cake 402 that medicine chute 403 is fallen on conveyer belt 401 by 404 lower section of container.
Described matrix 409 is the frame structure with hollow portion 411 so that the rotation that gunpowder slurry will not be rotated scrape material extrusion piece scan out to
Except container 401, guarantee that device high-efficiency continuous can be run.Splash guard 406 is equipped with above the upper opening of the container 404.
Splash guard 406 is equipped with mesoporous 408 convenient for shaft 407 by persistently supplying fire into container 404 with feed hopper (not shown)
Medicine slurry material.
The back cover mud filling mechanism 5 and sealing compound filling mechanism 6 is different from gunpowder slurry filling mechanism 4 is only in that
Its filling material is different, repeats no more.
Embodiment 2: referring to attached drawing 7, the firecracker cake 701 on transmission belt 706 is equipped with hangers 702 (i.e. hooking part), is passing
Distinguish 705 chain of device sprocket wheel, 704 mechanism in dynamic 706 two sides of band.Difference from example 1 is that no setting is required for chain 704
Hook, hangers 702 are directly hooked on the coupling recess portion 703 of chain 704.Then disengaging is slid after arriving 704 end of chain.
Embodiment 3: referring to attached drawing 8, the firecracker cake 801 on transmission belt 807 is equipped with hangers 802 (i.e. hooking part), with reality
Apply example 1 the difference is that, using synchronous belt replace sprocket wheel chain mechanism, 807 two sides of transmission belt distinguish device synchronous belt
805 and synchronizing wheel 806.Synchronous belt 805 is equipped with internal tooth 804 and external tooth 803, and no setting is required links up with, and hangers 802 is directly hooked on together
In 803 slots of external tooth for walking band 805.Then disengaging is slid after arriving 805 end of synchronous belt.
Above-mentioned implementation is merely to clearly illustrate technical solution of the present invention, and should not be understood as to the present invention
Make any restrictions.The present invention has well known a variety of substitutions or deformation in the art, is not departing from essence of the invention
Under the premise of meaning, protection scope of the present invention is each fallen within.
Claims (8)
1. a kind of note, which draws firecrackers, dries filling flow production line, which is characterized in that be sequentially distributed online drying along flow production line
Mechanism and filling mechanism, wherein
The online drying mechanism includes the conveyer belt for transporting firecracker cake, further includes two synchronizations for being located at conveyor belt two sides
Conveying mechanism, synchronous conveying system are connected with conveyer belt, and synchronous conveying system is located in oven cavity；The firecracker cake is tied up in sizing
The opposite two sides of the framework for tying up frame be respectively equipped with hooking part, the hooking part is opposite in the position for deviateing firecracker cake center line
Setting；At synchronous conveying system beginning, the hooking part is hooked on synchronous conveying system, in the end of synchronous conveying system,
Hooking part and synchronous conveying system are detached from；
The filling mechanism includes the container of the filling object of device, and sieve area is arranged on container, and the distribution of sieve area is several to penetrate container
Sieve pore；Material extrusion piece is scraped in device rotation in container, described to revolve the cross sectional shape pair for scraping the shape and container intracavity sieve area of material extrusion piece
It should be arranged；The scraping blade that material extrusion piece includes matrix and is packed in matrix outer rim around working face is scraped in rotation, and described matrix is with hollow
The frame structure in portion.
2. a kind of note as described in claim 1, which draws firecrackers, dries filling flow production line, which is characterized in that described to tie up frame packet
The framework being formed according to preset shape is included, the framework is provided with the closed circular of fracture, and incision position is equipped with bindiny mechanism.
3. a kind of note as described in claim 1, which draws firecrackers, dries filling flow production line, which is characterized in that the synchronous transport
Mechanism is the Liang Tiao sprocket wheel chain mechanism that horizontal position is higher than transmission belt, and Liang Tiao sprocket wheel chain mechanism is located at the two of conveyer belt
The beginning of side, sprocket wheel chain mechanism is Chong Die with transmission end of tape, and sprocket wheel chain mechanism is located in the oven cavity of strip, sprocket chain
The chain of mechanism is circumferentially uniformly distributed several hook A parts；Sizing tie up the firecracker cake the framework for tying up frame it is opposite two
Side, which is respectively equipped with, hooks B part, and the B part that hooks is oppositely arranged in the position for deviateing firecracker cake center line；The hook A part and hook
It hangs B part to be correspondingly arranged, chain and its hook A part do rotary motion, hook A part at the beginning of sprocket wheel chain mechanism and hook hook taking extension B
Part hooks A part and hooks B part and breaks off relations in the end of sprocket wheel chain mechanism.
4. a kind of note as described in any one of claims 1-3, which draws firecrackers, dries filling flow production line, which is characterized in that described
Filling mechanism includes back cover mud filling mechanism, gunpowder slurry filling mechanism and the sealing compound bottle placer being sequentially distributed along assembly line
Structure.
5. a kind of note as described in any one of claims 1-3, which draws firecrackers, dries filling flow production line, which is characterized in that described
Splash guard is equipped with above the upper opening of container, splash guard is equipped with mesoporous.
6. a kind of note as described in any one of claims 1-3, which draws firecrackers, dries filling flow production line, which is characterized in that described
The top of container is equipped with feed hopper.
7. a kind of note as described in any one of claims 1-3, which draws firecrackers, dries filling flow production line, which is characterized in that described
The lower section of container is equipped with and leads medicine chute.
8. a kind of note as claimed in claim 4, which draws firecrackers, dries filling flow production line, which is characterized in that under the container
Side is equipped with and leads medicine chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810286188.9A CN108469205B (en) | 2018-04-03 | 2018-04-03 | A kind of infuse draws the filling flow production line of firecrackers drying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810286188.9A CN108469205B (en) | 2018-04-03 | 2018-04-03 | A kind of infuse draws the filling flow production line of firecrackers drying |
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| Publication Number | Publication Date |
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| CN108469205A CN108469205A (en) | 2018-08-31 |
| CN108469205B true CN108469205B (en) | 2019-10-29 |
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| CN201810286188.9A Active CN108469205B (en) | 2018-04-03 | 2018-04-03 | A kind of infuse draws the filling flow production line of firecrackers drying |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272022B (en) * | 2020-02-06 | 2022-06-17 | 雍和平 | Water method production process of fireworks |
| CN113295053A (en) * | 2021-06-17 | 2021-08-24 | 费晓凯 | Wet production method of firecrackers |
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| CN103884242A (en) * | 2012-12-20 | 2014-06-25 | 衡阳市多通数码办公用品有限公司 | Production method of automatic combination-fireworks and production device thereof |
| CN203908421U (en) * | 2014-03-12 | 2014-10-29 | 刘家敏 | Auxiliary processing fixer for firecrackers |
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| CN106440964A (en) * | 2016-08-09 | 2017-02-22 | 醴陵市赖氏烟花有限公司 | Method for manufacturing firecrackers |
| CN107063002A (en) * | 2017-06-10 | 2017-08-18 | 杨帆 | A kind of filling mechanism of fireworks powder-filling production line |
| CN107356160A (en) * | 2017-07-31 | 2017-11-17 | 赵光荣 | A kind of combined firework firework gunpowder auto-filling equipment |
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2018
- 2018-04-03 CN CN201810286188.9A patent/CN108469205B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884242A (en) * | 2012-12-20 | 2014-06-25 | 衡阳市多通数码办公用品有限公司 | Production method of automatic combination-fireworks and production device thereof |
| CN203908421U (en) * | 2014-03-12 | 2014-10-29 | 刘家敏 | Auxiliary processing fixer for firecrackers |
| CN204064132U (en) * | 2014-07-01 | 2014-12-31 | 上栗县荷花精工机械有限公司 | A kind of firecrackers firework gunpowder filling mechanism |
| CN106440964A (en) * | 2016-08-09 | 2017-02-22 | 醴陵市赖氏烟花有限公司 | Method for manufacturing firecrackers |
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