CN110030778A - The producing device and method of multilayer ice hockey - Google Patents
The producing device and method of multilayer ice hockey Download PDFInfo
- Publication number
- CN110030778A CN110030778A CN201910406956.4A CN201910406956A CN110030778A CN 110030778 A CN110030778 A CN 110030778A CN 201910406956 A CN201910406956 A CN 201910406956A CN 110030778 A CN110030778 A CN 110030778A
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- mold
- ice hockey
- groove
- multilayer
- upper mold
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- 238000000034 method Methods 0.000 title abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000003292 glue Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000002390 adhesive tape Substances 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010429 evolutionary process Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000001161 mammalian embryo Anatomy 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C1/00—Producing ice
- F25C1/22—Construction of moulds; Filling devices for moulds
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses the producing device of multilayer ice hockey and methods, and the submodule tool including multiple and different sizes, each submodule tool includes upper mold, lower mold, position line；The production method of multilayer ice hockey includes preparing internal ice hockey and the external ice hockey of preparation.The producing device and method of multilayer ice hockey of the invention；Wherein the producing device structure design of multilayer ice hockey is simple, and production is simple, and the ice hockey dimensional standard made；The step of production method of multilayer ice hockey, what predominantly a variety of different size submodules had is used cooperatively, and ice hockey makes is relatively simple, and can be realized the concentric of multilayer ice hockey, it is not easy to faulty materials occurs.
Description
Technical field
The invention belongs to aircraft anti-ice hail surge guard technical fields, and in particular to the producing device of multilayer ice hockey and side
Method.
Background technique
In recent years, the accident that aircraft is damaged by hail impact is in increasing trend.Hail impact can make aircraft knot
Structure damages, and may finally cause body breaks down, larger to the harm of aircraft.Therefore, it is needed in Aircraft structural design
Want its reliability and safety under the conditions of hail impact of accurate evaluation.
For hail impact aircraft problem, using the load means transmitting such as the pressure projector, air bubble or light-gas gun
Equivalent hail impact waits for objectives of examination, with evaluation structure reliability and safety.Wherein, hail injures effect as member is injured
It should be affected by self structure.Hail forming process in nature is that solid precipitation object hail embryo is gone up and down repeatedly in cloud,
0 DEG C of layer height of multipass, experience condensation are melted, then the multilayer icing body formed after condensing, especially heavy hail generally have 4 layers
Or more layer.Existing research shows that failure mode of the ice under high-speed impact can influence it to target target plate to a certain degree
Degree of injury.And the presence of interface layer will affect the evolutionary process of ice test specimen internal fissure, and then to its macroscopical breaking patterns
It has an impact.
Current research mainly prepares the solid ice hockey of single layer by mold to carry out bump test, true there has been no hail is met
The stratiform ice preparation facilities and method of true property.Therefore, for can accurate evaluation hail to the impact damage effect of aircraft, have
Necessity carries out the stratiform ice hockey preparation facilities and technique study for meeting hail architectural characteristic.
We has developed the producing device and method of multilayer ice hockey in order to solve problem above.
Summary of the invention
The object of the invention is that providing the producing device and method of multilayer ice hockey to solve the above-mentioned problems.
The present invention through the following technical solutions to achieve the above objectives:
The producing device of multilayer ice hockey, the submodule tool including multiple and different sizes, each submodule tool include:
Upper mold；Hemispheric upper groove is formed on upper mold；The bottom of upper groove is provided with through the upper of upper mold
Hole；
Lower mold；Hemispheric lower groove is formed on lower mold；The bottom of lower groove is provided under lower mold
Hole；Upper mold is connected with lower mold, and upper groove and lower groove combine to form spherical groove；
Position line；Position line passes through upper hole and lower opening is arranged；When making ice hockey, lower opening is sealed, injects water from upper hole.
The production method of multilayer ice hockey, comprising the following steps:
S1；Prepare internal ice hockey；
Small size submodule tool is chosen, position line is carried out after telltale mark from the upper hole of upper mold and the lower opening of lower mold
In be pierced by and fixed with paper self-adhesive tape, guarantee that upper groove and lower groove combine and to form spherical groove by spacer pin, utilize bolt will
Upper mold and the fastening of lower mold；Upper mold and lower die tool faying face daub sealing, lower opening is sealed with glue, is filled the water from upper hole, complete
Mold is placed in household freezer after, household freezer selects a cryogenic temperature；After water congeals into ice completely, it is by ice hockey taking-up
It can；
S2；Prepare external ice hockey；
Large scale submodule tool is chosen, according to position line predeterminated position, the ice hockey with position line is placed in large scale submodule
In tool, the both ends with position line are pierced by from the lower opening of the upper hole of upper mold and lower mold respectively and are fixed with paper self-adhesive tape, led to
It crosses spacer pin and guarantees that upper groove and lower groove combine to form spherical groove, fastened upper mold and lower mold using bolt；Upper mold
Tool and lower die tool faying face daub sealing, lower opening is sealed with glue, fills the water from upper hole, mold is placed in household freezer after the completion,
Household freezer selects another cryogenic temperature；After water congeals into ice completely, multilayer ice hockey is taken out.
The beneficial effects of the present invention are:
The producing device and method of multilayer ice hockey of the invention；
1, wherein the producing device structure design of multilayer ice hockey is simple, and production is simple, and the ice hockey dimensional standard made；
2, the production method of multilayer ice hockey, what predominantly a variety of different size submodules had is used cooperatively, the step of ice hockey production
It is rapid relatively simple, and can be realized the concentric of multilayer ice hockey, it is not easy to there are faulty materials.
Detailed description of the invention
Fig. 1 is the perspective view of neutron mold of the present invention；
Fig. 2 is the longitudinal sectional view of neutron mold of the present invention；
Fig. 3 is that multilayer ice hockey prepares schematic diagram in the present invention；
Fig. 4 is structural schematic diagram of the invention.
In figure: 1- upper mold；The upper hole 11-；12- upper groove；Mold under 2-；21- lower opening；22- lower groove；3- positioning pin；
4- position line；5- ice pellet；The big ice hockey of 6-.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
Embodiment 1, as Figure 1-Figure 4；
The producing device of multilayer ice hockey, the submodule tool including multiple and different sizes, multiple sub- arrangement of molds of same size
It combines and constitutes the present apparatus, can once prepare multiple ice hockeys simultaneously, take into account efficiency；Each submodule has
Upper mold 1；Hemispheric upper groove 12 is formed on upper mold 1；The bottom of upper groove 12 is provided with through upper mold
The upper hole 11 of tool 1；
Lower mold 2；Hemispheric lower groove 22 is formed on lower mold 2；The bottom of lower groove 22 is provided with through lower die
The lower opening 21 of tool 2；Upper mold 1 and the connection of lower mold 2, upper groove 12 and the combination of lower groove 22 form spherical groove (different sizes
Submodule tool be mainly reflected in spherical groove size it is different)；
Position line 4；Position line 4 passes through upper hole 11 and lower opening 21 is arranged；When making ice hockey, lower opening 21, Cong Shangkong 11 are sealed
Inject water.
Embodiment 2, as Figure 1-Figure 4；
The present embodiment the difference from embodiment 1 is that: accordingly pin hole, logical is provided on upper mold 1 and lower mold 2
Hole is inserted into pin hole positioning by positioning pin 3 between upper mold 1 and lower mold 2, and passes through upper mold 1 and lower mold 2 by bolt
On through-hole after fasten.
Embodiment 3；
The present embodiment the difference from embodiment 1 is that: the faying face of upper mold 1 and lower mold 2 pass through daub seal.
Embodiment 4；As shown in Figure 3；
The production method of multilayer ice hockey, which comprises the following steps:
S1；Prepare internal ice hockey；
Small size submodule tool is chosen, position line 4 is carried out to upper hole 11 and lower mold 2 after telltale mark from upper mold 1
Lower opening 21 in be pierced by and fixed with paper self-adhesive tape, guarantee that upper groove 12 and the combination of lower groove 22 form spherical female by spacer pin
Slot is fastened upper mold 1 and lower mold 2 using bolt；Upper mold 1 and the sealing of 2 faying face daub of lower mold, use glue for lower opening 21
Sealing, Cong Shangkong 11 are filled the water, mold are placed in household freezer after the completion, and household freezer selects a cryogenic temperature；It is condensed completely to water
Cheng Binghou takes out ice hockey；
S2；Prepare external ice hockey；
Large scale submodule tool is chosen, it, will be with the ice hockey of position line 4 merging large scale according to 4 predeterminated position of position line
In mold, the both ends with position line 4 are pierced by from the lower opening 21 of the upper hole 11 of upper mold 1 and lower mold 2 respectively and with paper glue
Band is fixed, guarantees that upper groove 12 and the combination of lower groove 22 form spherical groove by spacer pin, using bolt by upper mold 1 and under
Mold 2 fastens；Upper mold 1 and the sealing of 2 faying face daub of lower mold, lower opening 21 are sealed with glue, Cong Shangkong 11 is filled the water, after the completion
Mold is placed in household freezer, household freezer selects another cryogenic temperature；After water congeals into ice completely, it is by the taking-up of multilayer ice hockey
It can.
The application is to undergo phase transition the physical property feature for being converted to ice in subzero according to water, designs the ice hockey of different-diameter
Submodule tool；Minimum diameter ice hockey is freezed first, and preparation is completed to be fixed in major diameter ice hockey mold by location technology
The heart, and then filled the water into major diameter ice hockey mold, then it is frozen into layer structure ice hockey.In this approach, the different numbers of plies be can get
Ice hockey.
Embodiment 5；
In the present embodiment, to take into account efficiency and operability, four submodule tools with size is selected to be combined into the application, this
Application preferably can once prepare four ice hockeys simultaneously.Big ice hockey mold overall dimensions are as follows: 170mm × 170mm × 80mm is (long × wide
× high), ice pellet mold overall dimensions are as follows: 130mm × 130mm × 60mm (length × width × height).5 diameter of ice pellet is chosen
30mm, big 6 diameter of ice hockey choose 60mm.Preparation facilities includes a set of Φ 30mm ice hockey preparation submodule tool, a set of Φ 60mm ice hockey
Prepare submodule tool, sealant, position line used for positioning 4, household freezer and distilled water.Producing device is using aluminium alloy as system
Standby material.Upper mold 1 and lower 2 faying face of mold are sealed by sealant.By making marks on filament and being frozen in ice
Realize that bead positions in big ball mould tool in ball.
Apparent layering ice hockey can be prepared by this method, the position of internal ice pellet 5 can by positioning filament
Guarantee it at the center of big ice hockey 6, and during the preparation process there is no significantly melting, interface layer is than more visible, energy
Enough reflect the layered structure characteristic of true hail.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appending claims and equivalents circle
It is fixed.
Claims (4)
1. the producing device of multilayer ice hockey, which is characterized in that the submodule tool including multiple and different sizes, each submodule tool wrap
It includes:
Upper mold；Hemispheric upper groove is formed on upper mold；The bottom of upper groove is provided with through the upper hole of upper mold；
Lower mold；Hemispheric lower groove is formed on lower mold；The bottom of lower groove is provided with the lower opening through lower mold；On
Mold is connected with lower mold, and upper groove and lower groove combine to form spherical groove；
Position line；Position line passes through upper hole and lower opening is arranged；When making ice hockey, lower opening is sealed, injects water from upper hole.
2. the producing device of multilayer ice hockey according to claim 1, which is characterized in that pass through between upper mold and lower mold
Finger setting is positioned, and is fastened by bolts.
3. the producing device of multilayer ice hockey according to claim 1, which is characterized in that the faying face of upper mold and lower mold
It is sealed by daub.
4. the production method of multilayer ice hockey, which comprises the following steps:
S1；Prepare internal ice hockey；
Small size submodule tool is chosen, position line is carried out and is worn from the lower opening of the upper hole of upper mold and lower mold after telltale mark
It fixes out and with paper self-adhesive tape, guarantees that upper groove and lower groove combine and to form spherical groove by spacer pin, using bolt by upper mold
Tool and the fastening of lower mold；Upper mold and lower die tool faying face daub sealing, lower opening is sealed with glue, is filled the water from upper hole, after the completion
Mold is placed in household freezer, household freezer selects a cryogenic temperature；After water congeals into ice completely, ice hockey is taken out；
S2；Prepare external ice hockey；
Large scale submodule tool is chosen, according to position line predeterminated position, the ice hockey with position line is placed in large scale submodule tool,
Both ends with position line are pierced by from the lower opening of the upper hole of upper mold and lower mold respectively and are fixed with paper self-adhesive tape, limit is passed through
Pin guarantees that upper groove and lower groove combine to form spherical groove, is fastened upper mold and lower mold using bolt；Upper mold is under
The sealing of mold faying face daub, lower opening is sealed with glue, is filled the water, mold is placed in household freezer after the completion, household freezer from upper hole
Select another cryogenic temperature；After water congeals into ice completely, multilayer ice hockey is taken out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910406956.4A CN110030778B (en) | 2019-05-16 | 2019-05-16 | Device and method for manufacturing multi-layer ice ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910406956.4A CN110030778B (en) | 2019-05-16 | 2019-05-16 | Device and method for manufacturing multi-layer ice ball |
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| Publication Number | Publication Date |
|---|---|
| CN110030778A true CN110030778A (en) | 2019-07-19 |
| CN110030778B CN110030778B (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910406956.4A Active CN110030778B (en) | 2019-05-16 | 2019-05-16 | Device and method for manufacturing multi-layer ice ball |
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| Country | Link |
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| CN (1) | CN110030778B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112013590A (en) * | 2020-08-21 | 2020-12-01 | 南京航空航天大学 | Density-controllable artificial ice hockey preparation device and preparation method |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5841375A (en) * | 1981-09-04 | 1983-03-10 | Hitachi Cable Ltd | Manufacture of honey comb construction with unidirectional focus |
| CN1455856A (en) * | 2000-09-01 | 2003-11-12 | 素村胜三 | Method and apparatus for producing stereoscopic ice of transparent sphere or the like |
| CN2731367Y (en) * | 2004-09-23 | 2005-10-05 | 龚志勇 | Ice block bag |
| TWM373120U (en) * | 2009-06-25 | 2010-02-01 | min-xiong Zhang | Egg-shaped ice bar |
| CN102316749A (en) * | 2009-01-16 | 2012-01-11 | 螺旋桨股份有限公司 | Method and apparatus for making frozen comestibles |
| CN102878744A (en) * | 2011-07-15 | 2013-01-16 | Lg电子株式会社 | Ice maker |
| TW201446148A (en) * | 2014-06-25 | 2014-12-16 | Min-Siung Chang | Method for making multi-layer ice substance |
| CN204027112U (en) * | 2014-06-03 | 2014-12-17 | 肖艳 | Silica gel ball-type ice mould |
| CN205027018U (en) * | 2015-09-18 | 2016-02-10 | 甄世华 | A modularization mould for making cavity ice -cream |
| CN106076981A (en) * | 2016-06-30 | 2016-11-09 | 兰荣 | Body surface cleans device, method and cleans the preparation method of ice hockey |
| CN106687758A (en) * | 2014-06-12 | 2017-05-17 | E·莫尔 | Methods and apparatus for creating photonic structured ice cube |
| CN107206269A (en) * | 2015-01-22 | 2017-09-26 | 斯瓦克斯拉克斯有限公司 | Training ball and the method for manufacturing training ball |
| CN209840478U (en) * | 2019-05-16 | 2019-12-24 | 中国工程物理研究院总体工程研究所 | Device for making multilayer ice hockey |
-
2019
- 2019-05-16 CN CN201910406956.4A patent/CN110030778B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5841375A (en) * | 1981-09-04 | 1983-03-10 | Hitachi Cable Ltd | Manufacture of honey comb construction with unidirectional focus |
| CN1455856A (en) * | 2000-09-01 | 2003-11-12 | 素村胜三 | Method and apparatus for producing stereoscopic ice of transparent sphere or the like |
| CN2731367Y (en) * | 2004-09-23 | 2005-10-05 | 龚志勇 | Ice block bag |
| CN102316749A (en) * | 2009-01-16 | 2012-01-11 | 螺旋桨股份有限公司 | Method and apparatus for making frozen comestibles |
| TWM373120U (en) * | 2009-06-25 | 2010-02-01 | min-xiong Zhang | Egg-shaped ice bar |
| CN102878744A (en) * | 2011-07-15 | 2013-01-16 | Lg电子株式会社 | Ice maker |
| CN204027112U (en) * | 2014-06-03 | 2014-12-17 | 肖艳 | Silica gel ball-type ice mould |
| CN106687758A (en) * | 2014-06-12 | 2017-05-17 | E·莫尔 | Methods and apparatus for creating photonic structured ice cube |
| TW201446148A (en) * | 2014-06-25 | 2014-12-16 | Min-Siung Chang | Method for making multi-layer ice substance |
| CN107206269A (en) * | 2015-01-22 | 2017-09-26 | 斯瓦克斯拉克斯有限公司 | Training ball and the method for manufacturing training ball |
| CN205027018U (en) * | 2015-09-18 | 2016-02-10 | 甄世华 | A modularization mould for making cavity ice -cream |
| CN106076981A (en) * | 2016-06-30 | 2016-11-09 | 兰荣 | Body surface cleans device, method and cleans the preparation method of ice hockey |
| CN209840478U (en) * | 2019-05-16 | 2019-12-24 | 中国工程物理研究院总体工程研究所 | Device for making multilayer ice hockey |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112013590A (en) * | 2020-08-21 | 2020-12-01 | 南京航空航天大学 | Density-controllable artificial ice hockey preparation device and preparation method |
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| CN110030778B (en) | 2023-10-31 |
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