CN111941887A - Manufacturing process of culture floater and culture floater obtained by process - Google Patents
Manufacturing process of culture floater and culture floater obtained by process Download PDFInfo
- Publication number
- CN111941887A CN111941887A CN202010734621.8A CN202010734621A CN111941887A CN 111941887 A CN111941887 A CN 111941887A CN 202010734621 A CN202010734621 A CN 202010734621A CN 111941887 A CN111941887 A CN 111941887A
- Authority
- CN
- China
- Prior art keywords
- bottle
- sealing cover
- culture
- bottle body
- floater
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- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims description 21
- 230000008569 process Effects 0.000 title claims description 18
- 238000007789 sealing Methods 0.000 claims abstract description 86
- 238000007664 blowing Methods 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 210000001161 mammalian embryo Anatomy 0.000 claims abstract description 3
- 238000009360 aquaculture Methods 0.000 claims description 6
- 244000144974 aquaculture Species 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 208000034699 Vitreous floaters Diseases 0.000 description 26
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009364 mariculture Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000237502 Ostreidae Species 0.000 description 1
- 241000206607 Porphyra umbilicalis Species 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 235000020636 oyster Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D22/00—Producing hollow articles
- B29D22/02—Inflatable articles
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
- A01K61/65—Connecting or mooring devices therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
Abstract
The invention discloses a manufacturing process of a culture floater, which is used for keeping a certain air pressure in the floater to adapt to water, and comprises the following steps: placing the bottle blank in a heating device for heating; when the bottle blank reaches the temperature required by bottle blowing, placing the bottle blank in a bottle blowing device, and closing the mold by the mold; filling compressed air into the bottle embryo; opening the mold after the bottle body is formed, and separating the mold from the bottle body; placing the bottle body in a welding device, placing a sealing cover on the bottle opening of the bottle body when the air pressure in the bottle body is still greater than 1 atmosphere, and covering the bottle opening of the bottle body by the sealing cover; the rotary disc is covered on the sealing cover, the sealing cover is driven to rotate by the rotary disc, and the sealing cover and the bottle mouth of the bottle body are welded together.
Description
Technical Field
The invention belongs to aquatic culture articles, and relates to a method for manufacturing a floater, in particular to a method for keeping air pressure in the floater, so that the floater has stronger pressure resistance and can be adapted to water without being flattened.
Background
At present, shallow sea beach culture is widely promoted, and products such as oysters, laver, fishes and the like are cultured in seawater in many ways. In mariculture, people need to prevent the aquaculture net cage from losing along with the drifting of sea waves or sinking into the sea bottom to cause incapability of fishing, and often need to fix the aquaculture net cage by adopting a floater, wherein the floater can enable the aquaculture net cage to float in the sea water and is convenient to fix.
In the past, most floaters are made of foam materials, but the foam has the problem that the foam is easy to crush and becomes small particles, many foams can generate a plurality of small particles after being discarded and float in seawater, so that marine organisms can be damaged to a certain extent, and even the survival of fishes can be influenced.
Several relevant documents are given below to reveal the current state of development of the float.
The Chinese patent application 200610164372.3 discloses a float with automatic buoyancy compensation, which comprises a hollow cavity 9, wherein the hollow cavity 9 is provided with an openable hole for convenient inflation and deflation, a connecting sealing element 10 is used for sealing the hole, and the hollow cavity 9 can play a role of enabling the float tail 2 to be positioned above and below the water surface.
Chinese utility model patent 201520833580.2 discloses an inflatable floating ball, which is used as an aquaculture product and comprises a floating body 10 and a sealing cover 13, wherein the floating body 10 is provided with an inner plug 12 on a sealing port 11, the inner plug 12 is provided with an inflating nozzle 14, and the floating body 10 can be inflated by the inflating nozzle 14.
Chinese utility model patent 201720655849.1 discloses an aerify reinforcing structure that seals of floater again, it is equipped with interior stopper 2 on sealing port 1, is equipped with charging connector 3 in the interior stopper 2, and the top of interior stopper 2 forms shoulder hole 24 in charging connector 3's top, can set up sealed plug 5 in the shoulder hole 24 to form resealing to charging connector 3.
In addition, the applicant also proposed an application to the national intellectual property office, the application number 202020953404.3, entitled float for mariculture, which proposes to put a gas releaser into the air bag during the manufacturing process and to weld the air bag and the air bag together by a sealing cover.
Therefore, in the prior art, people firstly manufacture the floating body, open a hole on the floating body, then fill gas into the floating body from the hole, and seal the hole by an inner plug, or install a valve at the position of the open hole, then fill gas into the floating body by the valve, or place a gas release object in the floating body, and then weld the sealing cover and the floating body into a whole.
At present, the defects are that the manufacturing process of the floater is complicated, the manufacturing period is long, the manufacturing cost is high, and the defect that gas leakage is easy to occur frequently exists due to an inner plug or a valve.
Disclosure of Invention
The invention aims to provide a manufacturing process of a culture floater, which has simpler and more convenient process and has the characteristics of no need of installing a valve for filling gas later, no need of filling the gas into a bottle body and closing the bottle body by a plug, no need of adding a gas release object into the bottle body and no need of adding the gas release object into the bottle body, and the culture floater manufactured by the process.
The manufacturing process of the culture floater is realized by the following scheme:
a manufacturing process of a culture floater is characterized by comprising the following steps:
placing the bottle blank in a heating device for heating;
when the bottle blank reaches the temperature required by bottle blowing, placing the bottle blank in a bottle blowing device, and closing the mold by the mold;
filling compressed air into the bottle embryo;
opening the mold after the bottle body is formed, and separating the mold from the bottle body;
placing the bottle body in a welding device, placing a sealing cover on the bottle opening of the bottle body when the air pressure in the bottle body is still greater than 1 atmosphere, and covering the bottle opening of the bottle body by the sealing cover;
the rotary disc is covered on the sealing cover, the sealing cover is driven to rotate by the rotary disc, and the sealing cover and the bottle mouth of the bottle body are welded together.
Preferably, in the above manufacturing process, the sealing cap is placed on the opening of the bottle body, and the first pressing rod is adopted to reach the sealing cap in a moving manner and act on the sealing cap. Therefore, the first pressure lever can reach the sealing cover in a moving or rotating mode and the like and press the sealing cover, and the effect of preventing the sealing cover from being possibly lifted due to high air pressure in the bottle before welding can be better achieved.
Preferably, in the above manufacturing process, the sealing cover is covered by the rotary plate, and the second pressing rod with elasticity extends downwards from the rotary plate and acts on the sealing cover. Therefore, due to the action of the second pressure lever, the effect of preventing the air pressure in the bottle from being large and possibly lifting the seal cover in the welding process can be better achieved.
In the scheme, the second pressure lever can be arranged in the main shaft, extends out of the main shaft, enters the turntable and acts on the sealing cover; or the rotary disc can be arranged in the rotary disc and directly acts on the sealing cover.
Furthermore, the first pressure lever is matched with the second pressure lever, and when the turntable is not covered, the first pressure lever presses the sealing cover; after the turntable is covered, the second pressure lever can press the sealing cover, and the first pressure lever can withdraw. Not only is preparation for the rotation of the turntable, but also provides more time for welding.
Preferably, in the above manufacturing process, the sealing cap has a handle, the turntable has a groove formed therein for the handle to enter, and the turntable drives the sealing cap to rotate via the handle.
Preferably, in the manufacturing process, the handle adopts a lifting bow, the groove is suitable for the lifting bow to enter, and the sealing cover can be driven to be in a correct position through the lifting bow when the first pressure lever is pressed on the sealing cover. Therefore, the lifting bow can be used as a fixed part of the culture floater, and the rotary disc covers the sealing cover, so that the lifting bow can accurately enter the groove to be prepared in advance.
Preferably, in the above manufacturing process, the main shaft of the welding device is provided with an orientation detection mechanism. Therefore, the orientation of the groove can be detected by the orientation detection mechanism so as to adjust the orientation of the groove in the turntable, and the turntable covers the sealing cover to ensure that the lifting bow can accurately enter the groove.
The culture floater is realized by the following scheme:
a culture floater prepared by the process.
In the above, the heating device, the bottle blowing device and the welding device can be respectively arranged in the independent heating machine, the bottle blowing machine and the welding machine, or the heating device and the bottle blowing device, or the bottle blowing device and the welding device, or the heating device, the bottle blowing device and the welding device can be arranged in the same machine, and the above purposes can be achieved.
Therefore, compressed air needs to be filled in the bottle blowing process, and when the bottle opening is covered by the sealing cover, a certain amount of compressed air can still remain in the bottle body, and the remaining air can be sealed in the bottle body by the sealing cover, so that the cultivation floater has certain air pressure which is greater than atmospheric pressure, and the floater has certain pressure resistance in water.
The invention creates the manufacturing process of the culture floater, the bottle mouth is directly sealed by the sealing cover when bottle blowing is adopted, partial compressed gas can be reserved in the floater to obtain the pressure resistance, compared with the prior art, the step of filling gas or the step of adding gas releaser in the manufacturing process can be omitted, and therefore, the process manufacturing flow is simplified.
According to the manufacturing process of the culture floater, the gas reserved in the floater is only the residual compressed gas left during bottle blowing, and the special spare extra compressed gas is not needed for inflation, so that the compressed gas material is saved compared with the prior art.
The manufacturing process of the culture floater not only saves compressed gas materials and reduces the subsequent inflation process steps, but also directly seals the sealing cover on the bottle body which is just blow molded, the bottle body has higher temperature than normal temperature, when the bottle body is at normal temperature, the bottle body can be further contracted, and then the air pressure in the floater can be enhanced by taking the contraction as a means.
In addition, the float obtained by the process, the sealing cover and the bottle mouth are welded into a whole, so the sealing performance of the float is better.
Drawings
FIG. 1 is a schematic view of a production line employing the fabrication process of the present invention;
FIG. 2 is a schematic view of the cap sorter of the manufacturing line of FIG. 1;
FIG. 3 is a schematic view of the heating apparatus in the production line of FIG. 1;
FIG. 4 is a schematic structural diagram of a bottle blowing device in the production line of FIG. 1;
FIG. 5 is a schematic view of the welding apparatus of the manufacturing line of FIG. 1;
FIG. 6 is a schematic view of the structure of the handling apparatus in the manufacturing line of FIG. 1;
FIG. 7 is a schematic view of the pinch head of the handler of FIG. 6;
fig. 8 is a schematic view of the welding device of fig. 5 without the turntable cover.
Detailed Description
The manufacturing process of the culture floater is described in detail below with reference to the attached drawings:
referring to fig. 2, 3, 4, 5, 6, 7, 8 and 1, the heating device B, the bottle blowing device C, the cap arranging device a and the welding device D are connected together by the suspension rail E, the bottle blank is heated by the heating device B and then sent to the bottle blowing device C through the suspension rail E, bottle blowing is carried out in the bottle blowing device C, after the bottle C is formed, the bottle C is sent to the welding device D from one side through the suspension rail E, meanwhile, the cap arranging device a sends the sealing cap a to the welding device D from the other side, and the sealing cap a is placed on the opening of the bottle C by the carrying device F.
Referring to fig. 5 and 8, the welding device D includes a first servo motor D1, a gear reduction box D2, a lower screw rod D3, a lifting pressure plate D4, a second servo motor D5, a rotary connector D6, a main shaft D7, a turntable D8, a first pressure rod D14, a cylinder D15 and a conveying device F, wherein, the middle of the main shaft d7 is provided with a second pressure lever d9, the second pressure lever d9 is sleeved with a compression spring d10, so that the second pressure lever d9 can move up and down, and the second pressure lever d9 has the largest downward extension in the free state, a hole is opened in the middle of the rotary disc d8, the second pressure lever d9 can extend downward from the hole, the second pressure lever d9 can enter the rotary disc d8, a groove d11 is formed on the end face of the rotary disc d8, the groove d11 is suitable for the lifting bow a1 of the sealing cover a to enter, a touch lever d12 is further mounted on the main shaft d7, a photoelectric eye d13 is mounted on the periphery of the touch lever d12, and in addition, the air cylinder d15 can drive the first pressure lever d14 to move.
Thus, when the sealing cover a covers the mouth of the bottle body c, the first pressure lever 14 can move and extend under the action of the air cylinder d15, the lifting bow a1 can be acted to correct the lifting bow a1, so that the sealing cover a rotates and is firstly corrected, and the first pressure lever d14 can press on the sealing cover a.
When the rotating main shaft d7 rotates, the position of the groove d11 can be adjusted through the detection of the touch rod d12 and the photoelectric eye d13, and the lifting bow a1 can accurately enter the groove d11 when the turntable d8 covers the sealing cover a;
when the rotary disc d8 covers the sealing cover a, the second pressure lever d9 can be pressed against the lifting bow a1 under the action of the compression spring d10, and the first pressure lever 14 can move and withdraw under the action of the air cylinder d15 and can not act on the sealing cover any more;
finally, the first servomotor d1 can drive the screw rod d3 to rotate through the gear reduction box d2, the screw rod d3 drives the pressure-increasing and-reducing plate d4 to move downwards, meanwhile, the second servomotor d5 drives the main shaft d7 through the rotary connector d6 and drives the turntable d8 to rotate at high speed, and the sealing cover a is pressed downwards and welded on the mouth of the bottle body c.
Referring to fig. 6 and 7, the conveying device F can move up and down or left and right, and conveys the closure a to the mouth of the bottle c by the pinch head.
The following describes a specific step of the manufacturing process of this embodiment:
placing the bottle blank in a heating device B for heating;
conveying and transporting the bottle blanks to a bottle blowing device C when the bottle blanks reach the temperature required by bottle blowing;
closing the mold by a mold C1, and filling compressed air into the bottle blank;
opening the die C1 after the bottle C is formed, and separating from the bottle C;
conveying and transporting the bottle bodies C from the bottle blowing device C to a welding device D;
conveying the sealing cover a from the arranging mechanism A to a welding device D;
when the air pressure in the bottle body c is still larger than 1 atmosphere, the carrying device F is used for placing the sealing cover a on the bottle opening of the bottle body c, and the sealing cover a covers the bottle opening of the bottle body c;
the first pressure lever d14 presses the sealing cover a, and the lifting bow a1 drives the sealing cover a to rotate and to be aligned;
the direction of the groove d11 is adjusted through the detection of a touch rod d12 on the main shaft d7 and a photoelectric eye d 13;
the rotary disc d8 covers the sealing cover a, and the lifting bow a1 enters the groove d 11;
a second pressure lever d9 is adopted to extend out of the rotary disc d8 and act on the lifting bow a 1;
the first pressure lever d14 is driven by the cylinder d15 to withdraw, and the sealing cover a is not acted any more;
the rotary disc d8 drives the sealing cover a to rotate at high speed through the lifting bow a1, and the sealing cover a is welded at the bottle mouth of the bottle body c;
the rotary disk d8 moves upwards and is separated from the sealing cover a;
the bottle body c with the sealing cover a is taken out.
Thus, the culture float of the present invention was obtained.
As can be seen from the above, when the rotating disc d8 covers the sealing cover a, the second pressing rod d9 extends from the rotating disc d8 and acts on the lifting bow a1, when the rotating disc d8 rotates, the sealing cover a presses down to weld with the mouth of the bottle c, the second pressing rod d9 can meet the requirement that the sealing cover a rotates and descends along with the sealing cover a, the acting force on the sealing cover a is always kept, and therefore, the effect of preventing the sealing cover a from being lifted in the rotation welding process can be better achieved.
Claims (10)
1. A manufacturing process of a culture floater is characterized by comprising the following steps:
placing the bottle blank in a heating device for heating;
when the bottle blank reaches the temperature required by bottle blowing, placing the bottle blank in a bottle blowing device, and closing the mold by the mold;
filling compressed air into the bottle embryo;
opening the mold after the bottle body is formed, and separating the mold from the bottle body;
placing the bottle body in a welding device, placing a sealing cover on the bottle opening of the bottle body when the air pressure in the bottle body is still greater than 1 atmosphere, and covering the bottle opening of the bottle body by the sealing cover;
the rotary disc is covered on the sealing cover, the sealing cover is driven to rotate by the rotary disc, and the sealing cover and the bottle mouth of the bottle body are welded together.
2. The process for manufacturing the culture float according to claim 1, wherein the sealing cap is placed on the opening of the bottle body, and the first pressing rod is used for reaching the sealing cap in a moving manner and acting on the sealing cap.
3. A process for manufacturing a float for aquaculture as claimed in claim 1 or 2, wherein the cover is covered by a rotary plate and a second resilient pressure bar is provided to extend downwardly from the rotary plate and act on the cover.
4. The process for manufacturing the culture floater according to the claim 1 or 2, wherein the first pressure rod is matched with the second pressure rod; when the turntable is not covered, the first pressure lever presses the sealing cover; after the turntable is covered, the second pressure lever can press the sealing cover, and the first pressure lever can withdraw.
5. The process for manufacturing the culture float according to the claim 1 or 2, wherein the sealing cover is provided with a handle, a groove for the handle to enter is formed in the rotary disc, and the rotary disc drives the sealing cover to rotate through the handle.
6. The manufacturing process of the culture floater according to claim 5, wherein the handle is a lifting bow, the groove is suitable for the lifting bow to enter, and the sealing cover can be driven to be in a correct position through the lifting bow while the pressure rod presses on the sealing cover.
7. The process for manufacturing the float for aquaculture as claimed in claim 4, wherein the sealing cover is provided with a handle, the rotary plate is provided with a groove for the handle to enter, and the rotary plate drives the sealing cover to rotate through the handle.
8. The manufacturing process of the culture floater according to claim 7, wherein the handle is a lifting bow, the groove is suitable for the lifting bow to enter, and the sealing cover can be driven to be in a correct position through the lifting bow while the pressure rod presses on the sealing cover.
9. The process for manufacturing the culture floater according to claim 8, wherein an orientation detection mechanism is arranged on a main shaft of the welding device.
10. A culture float made by the process of any one of claims 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010734621.8A CN111941887B (en) | 2020-07-28 | 2020-07-28 | Manufacturing process of culture floater |
| PCT/CN2020/000195 WO2022020977A1 (en) | 2020-07-28 | 2020-08-28 | Manufacturing process for culture buoy, and culture buoy obtained by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010734621.8A CN111941887B (en) | 2020-07-28 | 2020-07-28 | Manufacturing process of culture floater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111941887A true CN111941887A (en) | 2020-11-17 |
| CN111941887B CN111941887B (en) | 2022-08-26 |
Family
ID=73339654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010734621.8A Active CN111941887B (en) | 2020-07-28 | 2020-07-28 | Manufacturing process of culture floater |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111941887B (en) |
| WO (1) | WO2022020977A1 (en) |
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| CN102027882A (en) * | 2009-09-29 | 2011-04-27 | 张心周 | Buoy for aquaculture and manufacturing method |
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| CN208361854U (en) * | 2018-05-29 | 2019-01-11 | 湖南三德科技股份有限公司 | A kind of sample bottle automatic cap-rotating device |
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2020
- 2020-07-28 CN CN202010734621.8A patent/CN111941887B/en active Active
- 2020-08-28 WO PCT/CN2020/000195 patent/WO2022020977A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890927A (en) * | 1981-11-26 | 1983-05-30 | Kyoraku Co Ltd | Manufacture of closed hollow body |
| JPS6061241A (en) * | 1983-09-14 | 1985-04-09 | Sasaki Seikou Kk | Manufacture of float |
| CN1298341A (en) * | 1998-02-04 | 2001-06-06 | M管理-得克萨斯州有限公司 | Blow-nolded pressure tank with spin-welded connector |
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| CN102027882A (en) * | 2009-09-29 | 2011-04-27 | 张心周 | Buoy for aquaculture and manufacturing method |
| KR101822493B1 (en) * | 2017-06-16 | 2018-01-26 | 이재준 | Friction splicer of float for fisherywork |
| CN110253911A (en) * | 2019-06-21 | 2019-09-20 | 台州市易洋环保科技有限公司 | A kind of ecologic breeding inflation floating ball manufacturing process and structure |
| CN110667084A (en) * | 2019-10-14 | 2020-01-10 | 青岛科技大学 | Blow molding mold for hollow product with internal sealing |
| CN111469986A (en) * | 2020-04-24 | 2020-07-31 | 开平雅琪塑胶机械模具厂 | One-step sealing formed ocean floating ball and forming device thereof and floating ball preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022020977A1 (en) | 2022-02-03 |
| CN111941887B (en) | 2022-08-26 |
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