CN113119382A - Method for manufacturing safety helmet with honeycomb structure - Google Patents

Method for manufacturing safety helmet with honeycomb structure Download PDF

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Publication number
CN113119382A
CN113119382A CN202110288413.4A CN202110288413A CN113119382A CN 113119382 A CN113119382 A CN 113119382A CN 202110288413 A CN202110288413 A CN 202110288413A CN 113119382 A CN113119382 A CN 113119382A
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CN
China
Prior art keywords
mold
safety helmet
shielding piece
honeycomb structure
raw material
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Granted
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CN202110288413.4A
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Chinese (zh)
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CN113119382B (en
Inventor
邝红根
何军
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Zhuhai Cylum Sports Co ltd
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Zhuhai Cylum Sports Co ltd
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Priority to CN202110288413.4A priority Critical patent/CN113119382B/en
Publication of CN113119382A publication Critical patent/CN113119382A/en
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Publication of CN113119382B publication Critical patent/CN113119382B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3415—Heating or cooling
    • B29C44/3426—Heating by introducing steam in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3415—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4807—Headwear
    • B29L2031/4814—Hats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
    • B29L2031/608—Honeycomb structures

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Helmets And Other Head Coverings (AREA)

Abstract

The invention discloses a method for manufacturing a safety helmet with a honeycomb structure, which comprises the following steps: step 1, preparing water-soluble cloth and a shielding piece with a honeycomb structure, attaching the water-soluble cloth to two side surfaces of the shielding piece, and placing the shielding piece in a mold; step 2, closing the mold, and injecting the raw material of the helmet body into the mold; step 3, heating the raw material in the mold by water vapor to foam and mold the raw material; and 4, injecting cooling water into the mold to cool the mold, and opening the mold and taking out the safety helmet body after the mold is cooled. The invention also discloses another method for manufacturing the safety helmet with the honeycomb structure. The manufacturing method of the safety helmet with the honeycomb structure can ensure that the appearance of the safety helmet after injection molding is not influenced, can improve the production efficiency and reduce the labor cost.

Description

Method for manufacturing safety helmet with honeycomb structure
Technical Field
The invention relates to the field of safety protection, in particular to a manufacturing method of a safety helmet with a honeycomb structure.
Background
The safety helmet is widely applied to the fields of buildings, fire fighting, sports and the like, and can protect the head of a person. The current safety helmet can set up ventilative mouthful on the safety helmet and ventilate in order to prevent that the person of wearing head from feeling sultry, can set up honeycomb's shielding piece in the ventilative mouth, above ventilative structure can improve the person of wearing comfort level, increase the gas permeability and can make the safety helmet more light, simultaneously, the shielding piece can prevent to wear in-process have small-size objects such as mosquito or little stone from ventilating mouthful entering the safety helmet.
The process of moulding plastics of current safety helmet is to be honeycomb shielding piece and safety helmet body integrated into one piece and mould plastics and form, the back of moulding plastics, shielding piece partly exposes outside the safety helmet body, for naked part, another part inlays inside the safety helmet body, for embedding part, to those honeycomb holes of naked part and embedding part juncture, owing to can not be covered by the mould is complete, the raw and other materials of safety helmet body can fill into these honeycomb holes downthehole, influence the product appearance, it spends the artifical safety helmet body raw and other materials of spending a large amount of time in later stage in these honeycomb holes to get rid of, influence production efficiency and cost of labor are higher.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a method for manufacturing a safety helmet with a honeycomb structure, which can ensure that the appearance of the safety helmet after injection molding is not influenced, improve the production efficiency and reduce the labor cost.
According to the first aspect of the invention, the method for manufacturing the honeycomb structure safety helmet comprises the following steps: step 1, preparing water-soluble cloth and a shielding piece with a honeycomb structure, attaching the water-soluble cloth to two side surfaces of the shielding piece, and placing the shielding piece in a mold; step 2, closing the mold, and injecting the raw material of the helmet body into the mold; step 3, heating the raw material in the mold by water vapor to foam and mold the raw material; and 4, injecting cooling water into the mold to cool the mold, and opening the mold and taking out the safety helmet body after the mold is cooled.
The method has the following beneficial effects: in the process of moulding plastics, because the raw and other materials granule of safety helmet body is less than the aperture of honeycomb holes, after above-mentioned raw and other materials fill into the mould, raw and other materials can get into in the honeycomb holes of shielding piece, can influence the safety helmet outward appearance after the shaping. According to the invention, the water-soluble cloth is attached to the two side surfaces of the shielding piece, the honeycomb holes on the shielding piece can be sealed, and after the raw materials are filled in the mold, the sealed honeycomb holes on the shielding piece cannot enter the raw materials. In the subsequent steam heating process of the mold, the raw materials are gradually expanded and finally foamed and molded, meanwhile, the water-soluble cloth is gradually dissolved under the action of the steam, and when the water-soluble cloth is dissolved and the honeycomb holes of the shielding piece are exposed, the raw material particles are expanded to be larger than the diameters of the honeycomb holes and cannot enter the honeycomb holes, so that the appearance of the safety helmet is not influenced by adopting the injection molding method disclosed by the invention, and the subsequent manual cleaning step is not required. The manufacturing method of the safety helmet with the honeycomb structure can ensure that the appearance of the safety helmet after injection molding is not influenced, can improve the production efficiency and reduce the labor cost.
According to some embodiments of the invention, the water-soluble cloth has a density of 40g/m2。
According to some embodiments of the invention, the heating foaming temperature in the step 3 is 120 ℃ to 160 ℃.
According to some embodiments of the invention, the sum of the heating time in step 3 and the cooling time in step 4 is 5 to 6 minutes.
According to the second aspect of the invention, the method for manufacturing the safety helmet with the honeycomb structure comprises the following steps: step 1, preparing an encapsulation box and a shielding piece with a honeycomb structure, wherein the encapsulation box is sleeved outside the shielding piece and wraps the periphery of the shielding piece, the areas, which are not wrapped by the encapsulation box, of the middle parts of two side surfaces of the shielding piece are exposed areas, and the shielding piece sleeved with the encapsulation box is placed in a mold; step 2, closing the mold, and injecting raw materials of a helmet body into the mold, wherein the mold is provided with a slide block capable of abutting against the exposed area, and the outline of the end face of the slide block is the same as that of the exposed area; step 3, heating the raw material in the mold to foam and mold the raw material; and 4, injecting cooling water into the mold to cool the mold, and opening the mold and taking out the safety helmet body after the mold is cooled.
The method has the following beneficial effects: according to the invention, the packaging box is sleeved outside the shielding piece and wraps the periphery of the shielding piece, and when the mold is closed, the sliding block in the mold can be abutted against the exposed area on the side surface of the shielding piece, so that after raw materials are filled in the mold, the raw materials cannot enter the honeycomb holes of the exposed area from the position corresponding to the exposed area. For the part of the honeycomb holes at the edge of the exposed area, one part of the honeycomb holes is covered by the sliding block, and the other part of the honeycomb holes is covered by the packaging box. In conclusion, after the raw materials required by the helmet body are filled in the mold, the honeycomb holes in the exposed area of the shielding piece cannot enter the raw materials. The appearance of the safety helmet is not affected by adopting the injection molding method, and the subsequent manual cleaning step is not required to be added. The manufacturing method of the safety helmet with the honeycomb structure can ensure that the appearance of the safety helmet after injection molding is not influenced, can improve the production efficiency and reduce the labor cost. In addition, the packaging box can provide certain support for the shielding piece, and the shielding piece is prevented from being deformed due to impact in the injection molding process.
According to some embodiments of the invention, the edge of the end face of the packaging box is provided with a plurality of through holes, and the through holes penetrate through the packaging box.
According to some embodiments of the present invention, the enclosure includes an enclosure body and a cover that can be fastened to the enclosure body.
According to some embodiments of the invention, the enclosure is made of a plastic material.
According to some embodiments of the present invention, the sliding block is provided with a plurality of positioning protrusions, and the plurality of positioning protrusions can be inserted into part of the honeycomb holes of the exposed area correspondingly.
According to some embodiments of the invention, a plurality of the positioning protrusions are arranged along an edge of the exposed area.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a safety helmet according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a lid structure according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a package body according to an embodiment of the invention;
FIG. 4 is a schematic view of the assembled shield and enclosure of an embodiment of the present invention;
FIG. 5 is a schematic view of a mold structure according to one embodiment of the present invention;
FIG. 6 is a schematic view of a mold structure according to another embodiment of the present invention;
fig. 7 is a partially enlarged schematic view of a portion a of fig. 6.
Reference numerals: the shielding piece 100, the exposed area 110, the mold 200, the sliding block 210, the positioning protrusion 211, the packaging box 300, the packaging box body 310, the box cover 320, the safety helmet body 400 and the through hole 500.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, and more, less, etc. are understood as excluding the present number, and more, less, etc. are understood as including the present number.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, packaging, attachment and the like should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the detailed contents of the technical solutions.
Referring to fig. 1, the invention discloses a method for manufacturing a safety helmet with a honeycomb structure, which comprises the following steps:
step 1, preparing water-soluble cloth and a shielding piece 100 with a honeycomb structure, attaching the water-soluble cloth to two side surfaces of the shielding piece 100, and placing the shielding piece 100 in a mold 200;
step 2, closing the mold 200, and injecting the raw material of the helmet body 400 into the mold 200;
step 3, heating the raw material in the mold 200 by water vapor to foam the raw material;
and 4, injecting cooling water into the mold 200 to cool the mold 200, and after the mold 200 is cooled, opening the mold 200 and taking out the helmet body 400.
It can be understood that, during the injection molding process, since the raw material particles of the helmet body 400 are smaller than the pore size of the honeycomb holes, when the raw material is filled into the mold 200, the raw material enters the honeycomb holes of the shielding member 100, and the appearance of the helmet is affected after the molding. According to the invention, the water-soluble cloth is attached to two side surfaces of the shielding piece 100, the honeycomb holes on the shielding piece 100 can be sealed, and after the raw materials are filled in the mold 200, the sealed honeycomb holes on the shielding piece 100 can not enter the raw materials. In the subsequent steam heating process of the mold 200, the raw materials are gradually expanded and finally foamed and molded, meanwhile, the water-soluble cloth is gradually dissolved under the action of the steam, and when the water-soluble cloth is dissolved and exposes out of the honeycomb holes of the shielding piece 100, the raw material particles are expanded to be larger than the diameters of the honeycomb holes and cannot enter the honeycomb holes, so that the appearance of the safety helmet is not affected by adopting the injection molding method disclosed by the invention, and the subsequent manual cleaning step is not needed. The manufacturing method of the safety helmet with the honeycomb structure can ensure that the appearance of the safety helmet after injection molding is not influenced, can improve the production efficiency and reduce the labor cost.
In particular, the water-soluble cloth can be dissolved in water and is widely applied to the field of garment processing. Further, in some embodiments of the present invention, the water-soluble cloth is required to cover at least the middle portions of the two sides of the shielding element 100, i.e. the water-soluble cloth can completely wrap the shielding element 100, and can also cover only the two sides of the shielding element 100 or only the middle portions of the two sides of the shielding element 100, because the middle portions of the two sides of the shielding element 100 are exposed after injection molding and are appearance surfaces. It should be noted that, when the water-soluble cloth covers only the middle of the two sides of the shielding element 100, the area of the side of the shielding element 100 covered by the water-soluble cloth needs to be larger than the area of the side of the shielding element 100 exposed after injection molding, because if the honeycomb holes at the junction of the exposed part and the embedded part of the shielding element 100 are not sealed, the honeycomb holes will enter the raw material after injection molding, which affects the appearance.
In some embodiments of the invention, the water-soluble cloth has a density of 40g/m2Namely, the gram weight of the water-soluble cloth per square meter is 40g, the gram weight is an index representing the thickness degree of the fabric, and the gram weight represents the gram number of the cloth per square meter. Because water-soluble cloth need be heated the foaming shaping to the external diameter at the raw and other materials of safety helmet body 400 and be greater than the degree that the honeycomb hole was just dissolvable to exposing after the 100 honeycomb hole diameters of shielding piece to the diameter that water-soluble cloth dissolved and exposed raw and other materials behind the honeycomb hole still is less than the honeycomb hole diameter, consequently, the dissolving speed of water-soluble cloth need with the foaming shaping speed phase-match of safety helmet body 400 raw and other materials, need select the water-soluble cloth of suitable density promptly. The safety helmet body 400 is made of EPS materials, and the density of the water-soluble cloth is 40g/m through tests2The requirement that the dissolution speed of the water-soluble cloth is matched with the foaming forming speed of the raw material of the safety helmet body 400 can be met, and the density is 40g/m2After the water-soluble cloth is fully dissolved, the raw material of the safety helmet body 400 can not be excessively foamed or burnt.
Further, in some embodiments of the present invention, the thermal foam molding temperature in step 3 is 120 ℃ to 160 ℃. The heating foaming forming temperature is too low, so that the raw materials cannot be fully foamed and formed; when the heating foaming temperature is too high, the raw materials are excessively foamed and even scorched. Further, the sum of the heating time in step 3 and the cooling time in step 4 is 5 to 6 minutes.
Referring to fig. 2 to 5, the present invention further provides an embodiment, which includes the following specific steps:
step 1, preparing a packaging box 300 and a shielding piece 100 with a honeycomb structure, wherein the packaging box 300 is sleeved outside the shielding piece 100 and wraps the periphery of the shielding piece 100, the middle parts of two side surfaces of the shielding piece 100, which are not wrapped by the packaging box 300, are exposed areas 110, and the shielding piece 100 sleeved with the packaging box 300 is placed in a mold 200;
step 2, closing the mold 200, and injecting the raw material of the helmet body 400 into the mold 200, wherein the mold 200 is provided with a slide block 210 capable of abutting against the exposed area 110, and the outline of the end surface of the slide block 210 is the same as that of the exposed area 110;
step 3, heating the raw material inside the mold 200 to foam and mold the raw material;
and 4, injecting cooling water into the mold 200 to cool the mold 200, and after the mold 200 is cooled, opening the mold 200 and taking out the helmet body 400.
It can be understood that, in the present invention, the enclosure box 300 is sleeved outside the shielding member 100 and wraps the periphery of the shielding member 100, when the mold 200 is closed, the slider 210 in the mold 200 will abut against the exposed area 110 on the side of the shielding member 100, so that the raw material will not enter the honeycomb hole of the exposed area 110 from the position corresponding to the exposed area 110 after the mold 200 is filled with the raw material. For the part of the honeycomb holes at the edge of the exposed area 110, one part of the honeycomb holes is covered by the slider 210, and the other part is covered by the packing box 300. In summary, after the mold 200 is filled with the raw material required by the helmet body 400, the honeycomb holes in the exposed region 110 of the shield 100 do not enter the raw material. The appearance of the safety helmet is not affected by adopting the injection molding method, and the subsequent manual cleaning step is not required to be added. The manufacturing method of the safety helmet with the honeycomb structure can ensure that the appearance of the safety helmet after injection molding is not influenced, can improve the production efficiency and reduce the labor cost. In addition, the enclosure 300 can give the shield 100 some support to prevent the shield 100 from deforming due to impact during the injection molding process.
Referring to fig. 4, in some embodiments of the present invention, a plurality of through holes 500 are arranged on the edge of the end face of the enclosure 300, and the through holes 500 penetrate through the enclosure 300. The through hole 500 penetrating the packaging box 300 can expose a part of the honeycomb holes on the edge of the shielding piece 100, in the injection molding process, raw materials can enter the honeycomb holes corresponding to the through hole 500, and after the safety helmet body 400 is injection molded, the shielding piece 100 and the safety helmet body 400 can be combined more stably.
Referring to fig. 2 to 4, in some embodiments of the invention, the enclosure 300 includes an enclosure body 310 and a cover 320 that can be fastened to the enclosure body 310. During installation, the shielding member 100 can be placed in the enclosure body 310, and the cover 320 can be fastened to the enclosure body 310. It is understood that the enclosure body 310 and the cover 320 can be connected by a snap or a fastener, or can be connected by welding or the like. Further, the enclosure 300 is made of a plastic material, which is light in weight and low in cost.
Referring to fig. 6 and 7, in another embodiment of the present invention, a plurality of positioning protrusions 211 are disposed on the slider 210, and the plurality of positioning protrusions 211 can be inserted into a portion of the honeycomb holes of the exposed region 110. The positioning protrusions 211 can provide a certain supporting force to the shield 100, and can further prevent the shield 100 from being deformed during the injection molding process. Meanwhile, the positioning protrusion 211 can fix the position of the shield 100 relative to the mold 200, and prevent the shield 100 from moving during the injection molding process.
Further, in some embodiments of the present invention, a plurality of positioning protrusions 211 are disposed along an edge of the exposed area 110. The positioning protrusions 211 can support the shield 110 in the inner region enclosed by the positioning protrusions 211, and therefore, the positioning protrusions 211 are more advantageously distributed closer to the edge of the exposed region 110.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. The manufacturing method of the safety helmet with the honeycomb structure is characterized by comprising the following steps of:
step 1, preparing water-soluble cloth and a shielding piece (100) with a honeycomb structure, attaching the water-soluble cloth to two side surfaces of the shielding piece (100), and placing the shielding piece (100) in a mold (200);
step 2, closing the mold (200), and injecting the raw material of the helmet body (400) into the mold (200);
step 3, heating the raw material in the mold (200) by water vapor to foam and mold the raw material;
and 4, injecting cooling water into the mold (200) to cool the mold (200), and opening the mold (200) and taking out the helmet body (400) after the mold (200) is cooled.
2. The method of claim 1, wherein the water-soluble cloth has a density of 40g/m2。
3. The method for manufacturing a safety helmet with a honeycomb structure according to claim 1, wherein the heating foaming temperature in the step 3 is 120 ℃ to 160 ℃.
4. The method of making a cellular helmet according to claim 1, wherein the sum of the heating time in step 3 and the cooling time in step 4 is 5 to 6 minutes.
5. The manufacturing method of the safety helmet with the honeycomb structure is characterized by comprising the following steps of:
step 1, preparing an encapsulating box (300) and a shielding piece (100) with a honeycomb structure, wherein the encapsulating box (300) is sleeved outside the shielding piece (100) and wraps the periphery of the shielding piece (100), the middle parts of two side surfaces of the shielding piece (100) are not wrapped by the encapsulating box (300) and are exposed areas (110), and the shielding piece (100) sleeved with the encapsulating box (300) is placed in a mold (200);
step 2, closing the mold (200), and injecting raw materials of a helmet body (400) into the mold (200), wherein the mold (200) is provided with a slide block (210) capable of abutting against the exposed area (110), and the outline of the end face of the slide block (210) is the same as that of the exposed area (110);
step 3, heating the raw material inside the mold (200) to foam and mold the raw material;
and 4, injecting cooling water into the mold (200) to cool the mold (200), and opening the mold (200) and taking out the helmet body (400) after the mold (200) is cooled.
6. The method for manufacturing safety helmet with honeycomb structure according to claim 5, wherein a plurality of through holes (500) are arranged on the edge of the end face of the packaging box (300), and the through holes (500) penetrate through the packaging box (300).
7. The method for manufacturing safety helmet with honeycomb structure according to claim 5, wherein the enclosure (300) comprises an enclosure body (310) and a cover (320) capable of being buckled on the enclosure body (310).
8. Method for making a crash helmet with a cellular structure according to claim 5, characterized in that said enclosure (300) is made of plastic material.
9. The method for manufacturing safety helmet with honeycomb structure according to claim 5, wherein a plurality of positioning protrusions (211) are arranged on the sliding block (210), and the plurality of positioning protrusions (211) can be correspondingly inserted into partial honeycomb holes of the exposed area (110).
10. The method of making a cellular structure headgear of claim 9, wherein a plurality of the positioning protrusions (211) are provided along an edge of the exposed region (110).
CN202110288413.4A 2021-03-18 2021-03-18 Manufacturing method of safety helmet with honeycomb structure Active CN113119382B (en)

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US20070220662A1 (en) * 2006-03-22 2007-09-27 Fox Racing, Inc. Molded articles and molding methods particularly for a protective helmet
US20110167541A1 (en) * 2010-01-14 2011-07-14 Smith Optics, Inc. Helmet comprising surface reinforcing component with embedded anchors
US20140259321A1 (en) * 2011-10-11 2014-09-18 Hd Inspiration Holding B.V. Visor and method of manufacture
CN105522676A (en) * 2015-11-26 2016-04-27 徐建昇 Forming method of carbon fibers or glass fibers
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DE202015105471U1 (en) * 2015-10-15 2017-01-17 Martin Drechsel Protective device, in particular helmet, with shock-absorbing, homogeneously ventilating structure
CN106426712A (en) * 2016-04-07 2017-02-22 陈昊 Forming and water-proofing technique for box inside helmet
CN207373624U (en) * 2017-09-27 2018-05-18 苏州城时实业有限公司 Air-conditioning guard mould structure
CN108327166A (en) * 2018-02-01 2018-07-27 中国人民解放军62023部队 Injection-molding edge mold, molding bound edge production method and the bulletproof halmet of bulletproof halmet

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1074854A (en) * 1992-01-30 1993-08-04 陈耀东 The closely connected moulding manufacture method of helmet shell and inner buffer layer
CA2090347A1 (en) * 1993-02-25 1994-08-26 Louis Garneau Protective headgear with a hard, flexible outer shell, a soft insert anda hard, flexible inner shell embedded in the insert
US20040261297A1 (en) * 2003-06-25 2004-12-30 Park Hyung Jun Ethylene vinyl acetate based film for crosslinked blown eva foam, shoe components using the same, and method for manufacturing thereof
US20070220662A1 (en) * 2006-03-22 2007-09-27 Fox Racing, Inc. Molded articles and molding methods particularly for a protective helmet
US20110167541A1 (en) * 2010-01-14 2011-07-14 Smith Optics, Inc. Helmet comprising surface reinforcing component with embedded anchors
US20140259321A1 (en) * 2011-10-11 2014-09-18 Hd Inspiration Holding B.V. Visor and method of manufacture
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