CN207797887U - A kind of firework external cylinder of papery plane back cover - Google Patents
A kind of firework external cylinder of papery plane back cover Download PDFInfo
- Publication number
- CN207797887U CN207797887U CN201820107877.4U CN201820107877U CN207797887U CN 207797887 U CN207797887 U CN 207797887U CN 201820107877 U CN201820107877 U CN 201820107877U CN 207797887 U CN207797887 U CN 207797887U
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- CN
- China
- Prior art keywords
- firework external
- cylinder
- external cylinder
- papery
- back cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of firework external cylinders of papery plane back cover, include the firework external cylinder ontology of the papery of roll-forming, and the circumference barrel at firework external cylinder ontology port is whole to be bent to cylinder lumen；The bending part is pressed into plane body structure, the port of the plane body closing firework external cylinder ontology；Device is glued in the circle cardboard covering of cylinder lumen on the plane body.The generally full paper construction of the firework external cylinder, it is light-weight, it is easy recycling；Good leak tightness and structural strength height；Effectively prevent the generation of string fire phenomenon；It is easy to process simultaneously, it is widely applicable, traditional shale back cover firework external cylinder can be substituted comprehensively.
Description
Technical field
Firework external cylinder made of being rolled the utility model is related to a kind of fireworks component, especially paper.
Background technology
Notification number is that the Chinese utility model patent document of CN206540475U discloses " outside a kind of fireworks of papery back cover
Cylinder ", day for announcing 2017-10-03, Patent No. CN201720212770.1, applying date 2017-03-07.
The firework external cylinder for the papery back cover that the document provides includes the firework external cylinder ontology of the papery of roll-forming, the cigarette
Circumference barrel at flower outer barrel ontology port is whole to cylinder lumen bending；Device is glued in the circle cardboard covering of cylinder lumen
In the bending, the mesoporous of circle cardboard closing bending part.But in above-mentioned technical proposal, mesoporous existing for bending part is entirely by circle
Cardboard seals, and is possible to leak when pyrotechnic composition fires；The outer wall of the engaging portion of cylinder lateral wall and bottom face is arc-shaped, more
There are the gas passages that the arc-shaped engaging portion is formed between each cylinder when cylinder combination；The combination of above-mentioned leakage and gas passage
It is caused to have the possibility that string fire phenomenon occurs.
Utility model content
In order to solve above-mentioned drawback, technical problem to be solved by the utility model is to provide one kind being suitable for paper roll
The papery port closed mechanism of the firework external cylinder of system, structural strength height will not string fire.In order to solve the above-mentioned technical problem, this practicality
It is novel the technical solution adopted is that, a kind of firework external cylinder of papery plane back cover includes the firework external cylinder of the papery of roll-forming
Ontology, circumference barrel at firework external cylinder ontology port is whole to be bent to cylinder lumen；It is characterized in that, the bending part
It is pressed into plane body structure, the port of the plane body closing firework external cylinder ontology；Device is covered in the circle cardboard of cylinder lumen
It is glued on the plane body.
Using above-mentioned technical proposal, the plane back cover is molded in two steps, the first step, under the rotary squeezing of outer mold, cylinder
Circumference barrel at body end mouth is all whole to inner cavity bending；Second step, inside, under the cooperation rotary squeezing of outer mold, bending part
It is pressed into plane body structure and closed cylinder port.Circle cardboard covers out of cylinder lumen and is glued on the plane body.By
It is integrated structure in the bending part and barrel itself, bonding strength is high；Meanwhile the centre of the plane body of bending part compacting
Although position is more weak, since circle cardboard covering is glued on plane body, enhances integrally-built intensity and structure is steady
It is qualitative.Plane body and paper bar bar constitute pyrotechnic composition leakage of the double-deck barrier to thoroughly prevent to fire when so that the papery plane
Back cover closed barrel port and can bear the percussions of high pressure powder gases.
Preferably, the cylinder lateral wall and the outer wall of the engaging portion of bottom end plane body are rectangular.Each cylinder when more combinations
It is in close contact between bottom, gas passage is not present.
From the foregoing, it will be observed that the beneficial effects of the utility model are, the generally full paper construction of the firework external cylinder is light-weight,
It is easy recycling；Good leak tightness and structural strength height；Effectively prevent the generation of string fire phenomenon；It is easy to process simultaneously, it is widely applicable, it can be complete
Face substitutes traditional shale back cover firework external cylinder.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Description of the drawings
Fig. 1 is the vertical profile internal structure schematic diagram of firework external cylinder after the first one-step forming；
Fig. 2 is the surface structure schematic diagram of firework external cylinder after the first one-step forming；
Fig. 3 is the vertical profile internal structure schematic diagram of first step molding die；
Fig. 4 is the vertical profile internal structure schematic diagram of firework external cylinder after the second one-step forming；
Fig. 5 is the surface structure schematic diagram of firework external cylinder after the second one-step forming；
Fig. 6 is the vertical profile internal structure schematic diagram of second step molding die.
Specific implementation mode
Referring to attached drawing, reflect that a kind of concrete structure of the utility model, the firework external cylinder of the papery plane back cover include
The firework external cylinder ontology 1 of the papery of roll-forming, the circumference barrel at 1 port of firework external cylinder ontology are whole to cylinder lumen
Bending；The bending part 101 is pressed into plane body structure, the port of the plane body closing firework external cylinder ontology 1；Device is in cylinder
The covering of circle cardboard 2 of intracoelomic cavity is glued on the plane body.The outer wall of the cylinder lateral wall and the engaging portion of bottom end plane body
At right angles.
Using above-mentioned technical proposal, the plane back cover is molded in two steps, the first step, and glue infiltration needs the cylinder bent
Circumference barrel at 1 port；The arcwall 301 of first step molding die 3 shown in Fig. 3 is sleeved on outside the barrel port portion after infiltration
On wall, the round bar inner core 302 of mold is inserted into the cylinder lumen of firework external cylinder；One side revolving fireworks outer barrel or mold, impose on one side
Opposite pressure completes bending process, and the circumference barrel at barrel port is all whole to be bent to inner cavity, as shown in Figure 1, 2；
Second step, using second step molding die 4 as shown in Figure 6, interior mold 401 is inserted into fireworks from the another port of cylinder
The cylinder lumen of outer barrel；The cylindrical mold cavities of outer mold 402 are sleeved on rotary squeezing, the two on the barrel port portion outer wall after bending
Cooperation, bending part are pressed into plane body structure and closed cylinder port.Interior mold 401 pushes the circle paper in cylinder lumen simultaneously
Plate 2 covers and is glued on the plane body.It is got product after drying as shown in Figure 4,5.
Above-mentioned realization method is merely to clearly illustrate the technical solution of the utility model, and should not be understood as to this
Utility model makes any restrictions.The utility model has well known a variety of replacements or deformation in the art, is not taking off
Under the premise of from the utility model in essence meaning, the scope of protection of the utility model is each fallen within.
Claims (2)
1. a kind of firework external cylinder of papery plane back cover, include the firework external cylinder ontology of the papery of roll-forming, outside the fireworks
Circumference barrel at cylinder ontology port is whole to cylinder lumen bending；It is characterized in that, the bending part is pressed into plane body knot
Structure, the port of the plane body closing firework external cylinder ontology；Device is glued to the plane in the circle cardboard covering of cylinder lumen
On body.
2. a kind of firework external cylinder of papery plane back cover as described in claim 1, which is characterized in that the cylinder lateral wall and bottom
The outer wall of the engaging portion of transverse plane body is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820107877.4U CN207797887U (en) | 2018-01-23 | 2018-01-23 | A kind of firework external cylinder of papery plane back cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820107877.4U CN207797887U (en) | 2018-01-23 | 2018-01-23 | A kind of firework external cylinder of papery plane back cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207797887U true CN207797887U (en) | 2018-08-31 |
Family
ID=63269983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820107877.4U Expired - Fee Related CN207797887U (en) | 2018-01-23 | 2018-01-23 | A kind of firework external cylinder of papery plane back cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207797887U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443107A (en) * | 2018-12-31 | 2019-03-08 | 湖南新鹏环保科技有限公司 | Self-styled base stock cylinder and its manufacturing method with lead |
-
2018
- 2018-01-23 CN CN201820107877.4U patent/CN207797887U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443107A (en) * | 2018-12-31 | 2019-03-08 | 湖南新鹏环保科技有限公司 | Self-styled base stock cylinder and its manufacturing method with lead |
| CN109443107B (en) * | 2018-12-31 | 2024-03-05 | 湖南新鹏环保科技有限公司 | Self-sealing bottom paper tube with lead wire and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20200123 |