CN113119382B - Manufacturing method of safety helmet with honeycomb structure - Google Patents
Manufacturing method of safety helmet with honeycomb structure Download PDFInfo
- Publication number
- CN113119382B CN113119382B CN202110288413.4A CN202110288413A CN113119382B CN 113119382 B CN113119382 B CN 113119382B CN 202110288413 A CN202110288413 A CN 202110288413A CN 113119382 B CN113119382 B CN 113119382B
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- Prior art keywords
- safety helmet
- mold
- packaging box
- shielding piece
- manufacturing
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Classifications
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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
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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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Helmets And Other Head Coverings (AREA)
Abstract
The invention discloses a manufacturing method of 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 die; step 2, closing a mould, and injecting raw materials of the safety helmet body into the mould; step 3, heating the raw material in the die by steam to foam and shape 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 manufacturing method of the safety helmet with the honeycomb structure. The manufacturing method of the honeycomb structure safety helmet can ensure that the appearance of the safety helmet after injection molding is not affected, improve the production efficiency and reduce the labor cost.
Description
Technical Field
The invention relates to the field of safety protection, in particular to a manufacturing method of a honeycomb structure safety helmet.
Background
The safety helmet has wide application in the fields of construction, fire protection, sports and the like, and can protect the head of a person. In order to prevent the head of a wearer from feeling stuffy, the prior safety helmet is provided with a ventilation opening for ventilation, and a shielding piece with a honeycomb structure is arranged in the ventilation opening.
The injection molding process of the existing safety helmet is that the shielding piece with the honeycomb structure and the safety helmet body are integrally molded and molded, after injection molding, one part of the shielding piece is exposed out of the safety helmet body and is an exposed part, the other part of the shielding piece is embedded into the safety helmet body and is an embedded part, and for the honeycomb holes at the junction of the exposed part and the embedded part, raw materials of the safety helmet body can be filled into the honeycomb holes and influence the appearance of a product, a large amount of time is required to be spent for removing the raw materials of the safety helmet body in the honeycomb holes in the later period, the production efficiency is influenced, and the labor cost is high.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the manufacturing method of the safety helmet with the honeycomb structure, which can ensure that the appearance of the safety helmet after injection molding is not affected, improve the production efficiency and reduce the labor cost.
The manufacturing method of the honeycomb structure safety helmet according to the embodiment of the first aspect of the invention 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 die; step 2, closing a mould, and injecting raw materials of the safety helmet body into the mould; step 3, heating the raw material in the die by steam to foam and shape 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.
Has at least the following beneficial effects: in the injection molding process, as the raw material particles of the safety helmet body are smaller than the aperture of the honeycomb holes, after the raw materials are filled into the mold, the raw materials can enter the honeycomb holes of the shielding piece, and the appearance of the safety helmet can be influenced after the molding. 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 die, the sealed honeycomb holes on the shielding piece cannot enter the raw materials. In the subsequent steam heating process of the die, the raw materials are gradually expanded and finally foamed and molded, meanwhile, the water-soluble cloth is gradually dissolved under the action of steam, and when the water-soluble cloth is dissolved and exposes the honeycomb holes of the shielding piece, 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 injection molding method does not influence the appearance of the safety helmet, and the subsequent manual cleaning step is not needed. The manufacturing method of the honeycomb structure safety helmet can ensure that the appearance of the safety helmet after injection molding is not affected, 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/m 2 。
According to some embodiments of the invention, the heated foaming molding temperature in 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 minutes to 6 minutes.
The manufacturing method of the honeycomb structure safety helmet according to the embodiment of the second aspect of the invention comprises the following steps: step 1, preparing a packaging box and a shielding piece with a honeycomb structure, wherein the packaging box is sleeved outside the shielding piece and wraps the periphery of the shielding piece, the areas, which are not wrapped by the packaging box, of the middle parts of the two side surfaces of the shielding piece are exposed areas, and the shielding piece sleeved with the packaging box is placed in a die; step 2, closing the mould, and injecting raw materials of the safety helmet body into the mould, wherein the mould is provided with a sliding block capable of propping against the exposed area, and the contour of the end face of the sliding block is the same as that of the exposed area; step 3, heating the raw material in the die to foam and shape 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.
Has at least the following beneficial effects: the invention uses the packaging box to cover the outside of the shielding piece and wrap the periphery of the shielding piece, when the mould is closed, the sliding blocks in the mould can prop against the exposed area on the side surface of the shielding piece, so that after the mould is filled with raw materials, the raw materials can not enter the honeycomb holes of the exposed area from the corresponding positions of 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 summary, after the raw materials required by the safety helmet body are filled in the mould, the honeycomb holes in the exposed area of the shielding piece cannot enter the raw materials. The injection molding method of the invention does not affect the appearance of the safety helmet, and the subsequent step of manual cleaning is not needed. The manufacturing method of the honeycomb structure safety helmet can ensure that the appearance of the safety helmet after injection molding is not affected, improve the production efficiency and reduce the labor cost. In addition, the packaging box can give the shielding piece a certain support to prevent the shielding piece from being impacted and deformed in the injection molding process.
According to some embodiments of the invention, the edges of the end face of the package are arranged with a plurality of through holes, which pass through the package.
According to some embodiments of the invention, the packaging box comprises a packaging box body and a box cover capable of being buckled on the packaging box body.
According to some embodiments of the invention, the packaging box is made of plastic material.
According to some embodiments of the invention, the sliding block is provided with a plurality of positioning protrusions, and the positioning protrusions can be correspondingly inserted into part of the honeycomb holes of the exposed area.
According to some embodiments of the invention, the plurality of positioning projections are disposed along an edge of the exposed region.
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 foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of a 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 diagram of a package body according to an embodiment of the present 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 diagram of a mold structure according to one embodiment of the present invention;
FIG. 6 is a schematic diagram of a mold structure according to another embodiment of the present invention;
fig. 7 is an enlarged partial schematic view at a in fig. 6.
Reference numerals: the shielding member 100, the exposed area 110, the mold 200, the slider 210, the positioning protrusion 211, the packing box 300, the packing box body 310, the box cover 320, the helmet body 400, and the through hole 500.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, the meaning of several is one or more, greater than, less than, etc. is understood to not include the present number, and the above, below, in the inside, etc. are understood to include the present number.
In the description of the present invention, unless explicitly defined otherwise, terms such as disposing, wrapping, attaching, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by those skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1, the invention discloses a manufacturing method of a honeycomb structure safety helmet, which comprises the following steps:
step 1, preparing a 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 die 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 die 200 by steam to foam and shape 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.
It will be appreciated that during the injection molding process, since the particles of the raw material of the helmet body 400 are smaller than the diameters of the honeycomb holes, the raw material enters the honeycomb holes of the shield 100 after the raw material is filled into the mold 200, and the appearance of the helmet is affected after molding. In the invention, water soluble cloth is attached to both sides of the shielding member 100, the honeycomb holes on the shielding member 100 are sealed, and after the raw material is filled in the mold 200, the sealed honeycomb holes on the shielding member 100 do not enter the raw material. In the subsequent heating process of the mold 200 by steam, the raw materials are gradually expanded and finally foamed and formed, meanwhile, the water-soluble cloth is gradually dissolved under the action of steam, and when the water-soluble cloth is dissolved and the honeycomb holes of the shielding piece 100 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 injection molding method does not influence the appearance of the safety helmet, and the subsequent manual cleaning step is not needed. The manufacturing method of the honeycomb structure safety helmet can ensure that the appearance of the safety helmet after injection molding is not affected, improve the production efficiency and reduce the labor cost.
In particular, water-soluble cloths are soluble in water and find many applications in the field of apparel processing. Further, in some embodiments of the present invention, the water soluble cloth needs to cover at least the middle of both sides of the shielding member 100, that is, the water soluble cloth may completely cover the shielding member 100, or may cover only both sides of the shielding member 100 or cover only the middle of both sides of the shielding member 100, because the middle of both sides of the shielding member 100 is exposed after injection molding, and is an appearance surface. When the water-soluble cloth covers only the middle of the two sides of the shielding member 100, the area of the side of the shielding member 100 covered by the water-soluble cloth needs to be larger than the exposed area of the side of the shielding member 100 after injection molding, because the honeycomb holes at the junction of the exposed part and the embedded part of the shielding member 100 are not sealed, and the honeycomb holes enter raw materials after injection molding, so that the appearance is affected.
In some embodiments of the invention, the water-soluble cloth has a density of 40g/m 2 That is, the gram weight of the water-soluble cloth is 40g per square meter, and the gram weight refers to the thickness of the fabricAnd (3) marking, namely, the gram number of cloth per square meter. The water-soluble cloth is required to be dissolved to the extent that the honeycomb holes are exposed after the raw material of the helmet body 400 is heated and foamed until the outer diameter is larger than the diameter of the honeycomb holes of the shielding member 100, so that the diameter of the raw material is still smaller than the diameter of the honeycomb holes after the water-soluble cloth is dissolved and the honeycomb holes are exposed, and therefore, the dissolution speed of the water-soluble cloth is required to be matched with the foaming molding speed of the raw material of the helmet body 400, namely, the water-soluble cloth with proper density is required to be selected. EPS material is generally adopted as the raw material of the helmet body 400, and tests prove that the density of the water-soluble cloth is 40g/m 2 When the water-soluble cloth is used, the requirement that the dissolution speed of the water-soluble cloth is matched with the foaming molding speed of the raw material of the helmet body 400 can be met, and in addition, the density is 40g/m 2 After the water-soluble cloth is fully dissolved, the raw materials of the helmet body 400 are not excessively foamed or burnt.
Further, in some embodiments of the present invention, the heat foaming molding temperature in step 3 is 120 ℃ to 160 ℃. The heating foaming molding temperature is too low, so that the raw materials cannot be sufficiently foamed and molded; the over-high heating foaming forming temperature can cause the raw materials to be excessively foamed and even burnt. Further, the sum of the heating time in step 3 and the cooling time in step 4 is 5 minutes to 6 minutes.
Referring to fig. 2 to 5, the present invention further provides an embodiment, which specifically includes the following steps:
step 1, preparing a packaging box 300 and a shielding piece 100 with a honeycomb structure, sleeving the packaging box 300 outside the shielding piece 100 and wrapping the periphery of the shielding piece 100, wherein the areas, which are not wrapped by the packaging box 300, of the middle parts of the two side surfaces of the shielding piece 100 are exposed areas 110, and placing the shielding piece 100 sleeved with the packaging box 300 in a die 200;
step 2, closing the mold 200, and injecting raw materials of the safety helmet body 400 into the mold 200, wherein the mold 200 is provided with a sliding block 210 capable of propping against the exposed area 110, and the contour of the end surface of the sliding block 210 is the same as that of the exposed area 110;
step 3, heating the raw material in the die 200 to foam and shape 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.
It will be appreciated that the present invention is configured to cover the periphery of the shielding member 100 with the packaging box 300, and when the mold 200 is closed, the sliding blocks 210 in the mold 200 will abut against the exposed areas 110 on the sides of the shielding member 100, so that after the mold 200 is filled with raw materials, the raw materials will not enter the honeycomb holes of the exposed areas 110 from the corresponding positions of the exposed areas 110. For the portion of the cells at the edge of the bare area 110, one portion of the cells is covered by the slider 210 and the other portion is covered by the package 300. In summary, after the mold 200 is filled with the desired raw material for the helmet body 400, no honeycomb holes in the exposed region 110 of the shield 100 will enter the raw material. The injection molding method of the invention does not affect the appearance of the safety helmet, and the subsequent step of manual cleaning is not needed. The manufacturing method of the honeycomb structure safety helmet can ensure that the appearance of the safety helmet after injection molding is not affected, improve the production efficiency and reduce the labor cost. In addition, the enclosure 300 may provide some support to the shield 100 to prevent deformation of the shield 100 due to impact during injection molding.
Referring to fig. 4, in some embodiments of the present invention, a plurality of through holes 500 are arranged at the edge of the end surface of the package 300, and the through holes 500 penetrate the package 300. The through holes 500 penetrating the package can 300 can expose the honeycomb holes at the edge of the partial shielding member 100, and in the injection molding process, raw materials can enter the honeycomb holes corresponding to the through holes 500, so that after the injection molding of the helmet body 400, the combination of the shielding member 100 and the helmet body 400 is more stable.
Referring to fig. 2 to 4, in some embodiments of the present invention, the enclosure 300 includes an enclosure body 310 and a lid 320 that may be snapped onto the enclosure body 310. When in installation, the shielding piece 100 can be placed in the packaging box body 310, and then the closing cover 320 is buckled on the packaging box body 310. It is understood that the package body 310 and the lid 320 may be connected by a buckle or a fastener, or may be connected to each other by welding or the like. Further, the package box 300 is made of plastic material, which is light and low in cost.
Referring to fig. 6 and 7, in another embodiment of the present invention, a plurality of positioning protrusions 211 are provided on the slider 210, and the plurality of positioning protrusions 211 may be correspondingly inserted into a portion of the honeycomb holes of the exposed area 110. The plurality of positioning protrusions 211 may provide a certain supporting force to the shield 100, and may further prevent the shield 100 from being deformed during injection molding. Meanwhile, the positioning protrusions 211 can fix the position of the shielding member 100 relative to the mold 200, so as to prevent the shielding member 100 from moving during injection molding.
Further, in some embodiments of the present invention, a plurality of locating protrusions 211 are provided along the edge of the bare area 110. The positioning projections 211 can give a supporting force to the shield 110 of the inner region surrounded by themselves, and therefore, the closer the positioning projections 211 are distributed to the edge of the exposed region 110, the more advantageous.
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 one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (6)
1. The manufacturing method of the honeycomb structure safety helmet is characterized by comprising the following steps of:
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 area, which is not wrapped by the packaging box (300), in the middle of the two side surfaces of the shielding piece (100) is a bare area (110), and the shielding piece (100) sleeved with the packaging box (300) is placed in a die (200);
step 2, closing the mould (200), and injecting raw materials of a safety helmet body (400) into the mould (200), wherein the mould (200) is provided with a sliding block (210) capable of propping against the exposed area (110), and the contour of the end face of the sliding block (210) is the same as that of the exposed area (110);
step 3, heating the raw material in the mold (200) to foam and shape 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 safety helmet body (400) after the mold (200) is cooled.
2. The method for manufacturing the honeycomb structure helmet according to claim 1, wherein a plurality of through holes (500) are arranged at the edge of the end face of the packaging box (300), and the through holes (500) penetrate through the packaging box (300).
3. The method of manufacturing a helmet with a honeycomb structure according to claim 1, wherein the packaging box (300) comprises a packaging box body (310) and a box cover (320) capable of being buckled on the packaging box body (310).
4. The method of manufacturing a honeycomb safety helmet according to claim 1, wherein the package case (300) is made of a plastic material.
5. The method for manufacturing the honeycomb safety helmet according to claim 1, wherein the sliding block (210) is provided with a plurality of positioning protrusions (211), and the plurality of positioning protrusions (211) can be correspondingly inserted into a part of the honeycomb holes of the exposed area (110).
6. The method of manufacturing a honeycomb safety helmet according to claim 5, wherein a plurality of the positioning projections (211) are provided along the edge of the exposed region (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110288413.4A CN113119382B (en) | 2021-03-18 | 2021-03-18 | Manufacturing method of safety helmet with honeycomb structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110288413.4A CN113119382B (en) | 2021-03-18 | 2021-03-18 | Manufacturing method of safety helmet with honeycomb structure |
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| Publication Number | Publication Date |
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| CN113119382A CN113119382A (en) | 2021-07-16 |
| CN113119382B true CN113119382B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110288413.4A Active CN113119382B (en) | 2021-03-18 | 2021-03-18 | Manufacturing method of safety helmet with honeycomb structure |
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| CN (1) | CN113119382B (en) |
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| EP1491574A1 (en) * | 2003-06-25 | 2004-12-29 | Hyung Jun Park | Blown, foamed, crosslinked ethylene vinyl acetate based film, shoe components using the same, and method for manufacturing thereof |
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| 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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| Publication number | Publication date |
|---|---|
| CN113119382A (en) | 2021-07-16 |
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