CN1043726C - Safety helmet and its manufacture method - Google Patents
Safety helmet and its manufacture method Download PDFInfo
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- CN1043726C CN1043726C CN 95115447 CN95115447A CN1043726C CN 1043726 C CN1043726 C CN 1043726C CN 95115447 CN95115447 CN 95115447 CN 95115447 A CN95115447 A CN 95115447A CN 1043726 C CN1043726 C CN 1043726C
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Abstract
The present invention provides a safety helmet and a making method thereof. The making method comprises: preheating a mould, spraying a release agent on the surface of an upper mould, putting a shaped shell on a lower mould, filling foaming material in an upward inner cavity of the outer shell, closing the moulds, heating, foaming and demoulding. The making method is characterized in that before mould closing, a hollow side shell is sheathed around the upper mould and a PU layer is sprayed on the release agent, so that the PU layer can be combined a heated foaming buffering layer into integration and forms a smooth thin layer on the surface layer of the buffering layer; in foaming for filling, the foaming material enters the hollow side shell through a periphery circular opening perforating the inner circumference of the hollow side shell and the inner cavity of a plastic outer shell and forms a foaming body buffering layer for firmly joining the side shell with the outer shell.
Description
The present invention relates to a kind of helmet and manufacture method thereof, particularly a kind of bicyclist wears the crash helmet and the manufacture method thereof of usefulness.
The structure of present crash helmet is similar, is a hard slightly plastic casing at its skin, fills out with light weight and for soft material layer in enclosure interior to contact with head, when bumping, relies on soft layer shock-absorbing buffering.The machining manufacture of the present above-mentioned helmet can be divided into following two kinds.
A kind of is to fill in Poly Foam in the plastic colloid enclosure; be about to the Poly Foam particle and be molded into shelly with the heating pressing mode; be nested with the hard plastic shell again; and be nested with soft cotton in the endosexine of Poly Foam; so that head does not contact with more coarse Poly Foam layer and can protect Poly Foam not to be damaged, because this process is comparatively loaded down with trivial details, cost is also higher; therefore, be usually used in the production of motorcycle helmet.
Another kind is to fill in foaming body in plastic shell inside, the raw material that is about to be used to foam injects in the glue shell of counterdie, again patrix and counterdie are carried out matched moulds, then mould is sent in the heater that heating makes the foaming raw material foaming and at the inner cushion that forms of plastic cement shell, this processing method is simple than first kind of processing method.But the foaming body top layer that has only after the demoulding can produce suitable smart rough top layer, give the not good enough sense that brings sense of discomfort and outward appearance when wearing for fear of this rough surface, therefore, must make a soft cotton-padded covering layer again and be nested with rough surface skin in foaming layer, so, anti-ballisticly the increase of production process and the raising of cost have been caused.The generation on the coarse top layer of foaming layer forms naturally with existing manufacturing procedure and mould, because, behind the upper and lower mould matched moulds, protruding patrix surface is exactly the outer surface of foaming layer moulding in the helmet down, and foaming raw material the time is from the moulding of swelling from bottom to top of the recessed inner surface of plastic casing in foaming, and its foaming body can't fully cling to the following nonreentrant surface of patrix; Just can't form more smooth closely knit can be directly and the head surface of wearing usefulness, so, must set up the soft cotton-padded covering layer of one deck.
In addition, the following peripheral of existing crash helmet generally is with a circle rubber surrounding edge, to reach fixing cotton-padded covering layer and the purpose of the plastic casing that prevents to wear and tear, interim cover is embedded into the plastic casing periphery because the rubber surrounding edge is the back, thereby its both insecure, also coordination not attractive in appearance, because it is different that the quality on glue limit, color and mould-injection duricrust belong to two kinds of materials, the separate component that color is different.And cotton layer Chang Yinyu cushion is not easy to fixing and normal delamination, the comfort when influence is worn, and also also inconvenience is carried out the wiping cleaning to helmet inner surface.Soak sweat stain and shelter evil people and countenance evil practices so very easily glue, often distribute smell, be unfavorable for the sanitation and hygiene of head in summer.
One of purpose of the present invention just is to overcome the above-mentioned shortcoming and defect of prior art, and the crash helmet manufacture method that provides a kind of cushion outer surface that utilizes the foaming of the layer of polyurethane that sprayed before the Ccope closing machine, the shell body internal layer behind matched moulds to form the whole smooth thin layer and limit shell and shell body filling are held together, be convenient to clean the purpose that directly to wear and can reduce cost to reach.
Two of purpose of the present invention just is to overcome the above-mentioned shortcoming and defect of prior art, and a kind of formed hardened layer on patrix surface and hollow limit shell that is nested with of investing of the layer of polyurethane that is sprayed before the Ccope closing machine that utilize be provided, the cushion outer shell of the foaming of the foaming shell body internal layer behind matched moulds forms whole smooth film layer, is filled in the crash helmet that the expanded moldings in inner housing and the hollow limit shell is combined as a whole limit shell and shell body by flowing.
The objective of the invention is to realize by following technical scheme:
With mould and die preheating and after patrix surface spraying releasing agent, be nested with molded good shell body on the counterdie, inject the foaming raw material at shell body inner cavity up, carry out the matched moulds of upper and lower mould then in regular turn, heating, foaming, and the demoulding, it is characterized in that: the patrix periphery before matched moulds is nested with the limit shell of hollow, the patrix top layer that sprayed releasing agent before matched moulds sprays the last layer layer of polyurethane again, layer of polyurethane can be combined into one with the foamed damping layer behind the foamable and form smooth thin layer at the cushion extexine, in foam filling, the circumferential annular opening that expanded material also connects by all sides and plastic shell inner chamber in the shell of hollow limit enters shell inside, hollow limit and constitutes one with limit shell and shell strong bonded foaming body cushion together.
Therefore: remarkable result of the present invention is as follows:
The 1st: because the formation of polyurethane smooth film layer, make the helmet inner surface after the moulding smooth smooth, both can directly wear usefulness with head, saved again add cotton top layer and taking a lot of work of causing, take a lot of trouble, inconvenient cleaning wiping and antihygienic many defectives.
The the 2nd:, and when the foaming heating, formed a reliable protection layer before closing film with sticking the melting of foamed damping layer because layer of polyurethane is the hardened layer that forms together.
The 3rd: because the limit shell of hollow is the foaming body that material flows, filling forms during by foaming and limit shell and shell are combined, thereby not only firmly but also attractive in appearance, and its combination is easy and easy to be capable.
Concrete structure of the present invention and manufacture method realize by the following examples and accompanying drawing thereof:
Fig. 1 is a manufacturing flow chart of the present invention.
Fig. 2 is the action schematic diagram during flow process first step mold heated among Fig. 1.
Fig. 3 is the action schematic diagram that second step of flow process sprays releasing agent among Fig. 1.
Fig. 4 is the action schematic diagram that the 3rd step of flow process is nested with hollow limit shell among Fig. 1.
Fig. 5 is the action schematic diagram of the 4th step of flow process when the patrix spraying polyurethane coats with lacquer among Fig. 1.
Fig. 6 is the action schematic diagram during injecting frothing material in the shell body of flow process the 5th step in counterdie among Fig. 1.
Fig. 7 is the schematic diagram when flow process the 6th goes on foot the upper and lower mould fastening among Fig. 1.
Fig. 8 is the semi-finished product outline drawing after flow process the 7th step demoulding among Fig. 1.
Fig. 9 is the three-dimensional structure diagram of finished product of the present invention.
Figure 10 is the partial sectional view of Fig. 9.
The corresponding component name of numbering in each accompanying drawing of the present invention is called:
10 moulds, 101 counterdies, 102 patrixes, 11 heating furnaces, 12 plastic shells, 13 hollow limit shells, 131 peripheral openings, 132 lower open mouths, 14 thin polyurethane retes, 15 foaming raw materials, 16 foamed damping layers, 161 filling embedding limits.
Below in conjunction with accompanying drawing 1-10 concrete structure of the present invention is described in detail:
The concrete structure of the helmet is as follows among the present invention:
A kind of crash helmet, a preformed plastic shell 12 is arranged, one foamed damping layer 16 is arranged in the recessed chamber of plastic shell 12, it is characterized in that: before the indent skin of foamed damping layer 16 is combined with a foaming, form, the smooth thin polyurethane rete 14 that combines at when foaming and cushion, be equipped with the limit shell 13 of a hollow at plastic shell 12 following peripheral outer ring surfaces, the limit shell 13 of hollow has a peripheral openings 131 towards the lumen side of plastic shell 12, and the filling embedding limit 161 of foamed damping layer 16 is filled out limit shell 13 inside and the peripheral openings place that is embedded in hollow and formed one with the monoblock type foamed damping layer 16 of hollow limit shell 13 with the filling embedding limit 161 of plastic shell 12 strong bonded band evagination together.Referring to Fig. 9 and Figure 10.
The manufacture method of the helmet is as follows among the present invention:
Elder generation is with mould 10 preheatings and spray releasing agent, in counterdie 101, be nested with the plastic shell 12 of forming in advance, in moulding system shell 12 inner cavity up, inject foaming raw material 15, carry out the matched moulds of upper and lower mould 102 and 101 then in regular turn, foamable, the demoulding, it is characterized in that: the patrix that sprayed releasing agent 102 surfaces before matched moulds spray last layer polyurethane enamelled coating again, the sixth of the twelve Earthly Branches preheating sclerosis before matched moulds of polyurethane enamelled coating becomes a thin layer that invests the patrix surface, the periphery of the patrix 102 before matched moulds is nested with hollow and peripheral openings 131 towards the hollow limit of inboard shell 13, formed in the foamable process of polyurethane enamelled coating behind matched moulds one with foamed damping layer 16 clinkering smooth thin polyurethane rete 14 together, foaming raw material 15 is filled into hollow limit shell 13 in by peripheral openings 131 when foamable and hollow limit shell 13 and plastic shell 12 is combined.Referring to Fig. 1 to Fig. 9.
The temperature of mould 10 preheatings is 60 ℃-80 ℃, the mould that sprayed the polyurethane enamelled coating must be moved into to shift out after the heat hardening in the heating furnace 11 when mould 10 ends reach preheat temperature again and be nested with hollow limit shell 13, hollow limit shell 13 and being nested with before or after the spraying polyurethane enamelled coating of patrix 102 are carried out.
Below in conjunction with accompanying drawing operating procedure of the present invention is described in detail:
The present invention adopts the continuous mode of production to carry out, its array mould system places on the transportation machine earlier, the mould 10 that at first will have a upper and lower mould 101,102 is sent into and is preheated to 60 ℃-80 ℃ in the heating furnace 11, because preheating is primarily aimed at patrix 101 and carries out, so heating tube places the top in the heating furnace.See also the 1st, 3 figure, send that heating furnace 11 has heated program that the mould 10 finished promptly cleans and spraying one deck remover on patrix 101.Saw also for the 1st, 4 weeks, after mould 10 entered the spraying position, counterdie 102 was nested with in type relatively plastic shell 12, and 101 of patrixes are nested with in type hollow limit shell 13, and made and wherein eat dishes without rice or wine 132 the plastic shell 12 with counterdie 102 is relative down.See also the 1st, 5 figure explanations, after being nested with the limit shell, in the evagination die face sprayed coating polyurethane paint of patrix 101, because mould 10 is promptly giving preheating in advance, therefore polyurethane paint is subjected to the adding thermal effect of mould waste heat and hardens into thin film 14 in last die face, and sticks on the die face of patrix 101.See also the 1st, 6,7 figure, the liquid foaming raw material 15 that will be prepared in advance (polyurethane ester admixture) injects in the plastic shell 12 of counterdie, promptly with patrix 101 and counterdie 102 matched moulds and clear up the flash of flash mouth, at this moment, 12 foaming of plastic shell that the heat energy that the i.e. utilization of foaming raw material 15 itself produces crouches and puts in patrix and counterdie rapidly, and be filled to the inside of limit shell 13 by the peripheral openings 131 of hollow limit shell 13, and hollow limit shell 13 and plastic shell 12 are combined as a whole, promptly finished foaming in about 5-6 minute.See also the 8th figure, crash helmet after the demoulding, the inner face of its plastic shell 12 is to form shock-absorbing cushion 16 and its top layer by foaming body to be combined with one deck and to form thin polyurethane rete 14 by the polyurethane paint sclerosis, because thin polyurethane rete 14 is the smooth die face moulding according to patrix 101, therefore the top layer of demoulding rear film layer 14 also is a shiny surface, after adhering to the interior foaming body cushion 16 of shell, make the inner face of crash helmet have smooth even curface, the comfort of wearer's head cushion is provided, and also be full of both foaming bodies in the limit shell 13, both reached the purpose that integrally combines with shell 12, utilize limit shell 13 to be material again than hard, wear-resistant surface preferable when inserting is provided, and increases the attractive in appearance of the helmet.See also the 9th figure, the helmet after the moulding is rebuild the corner and cut the moulding that open-work can be finished the helmet.Polyurethane paint is polyurethane or polyurethanes lacquer.
Claims (3)
1, a kind of crash helmet, a preformed plastic shell (12) is arranged, one foamed damping layer (16) is arranged in the recessed chamber of plastic shell (12), it is characterized in that: before the indent skin of foamed damping layer (16) has a foaming, form, the smooth thin polyurethane rete (14) that combines at when foaming and cushion, be equipped with the limit shell (13) of a hollow at plastic shell (12) following peripheral outer ring surface, the limit shell (13) of hollow has a peripheral openings (131) towards the lumen side of plastic shell (12), and the filling embedding limit (161) of foamed damping layer (16) is filled out limit shell (13) inside and the peripheral openings place that is embedded in hollow and formed one with the monoblock type foamed damping layer (16) of hollow limit shell (13) with the filling embedding limit (161) of plastic shell (12) strong bonded band evagination together.
2, manufacture method by the described crash helmet of claim 1, elder generation is with mould (10) preheating and spray releasing agent, in counterdie (101), be nested with the plastic shell (12) of forming in advance, in plastic shell (12) inner cavity up, inject foaming raw material (15), carry out the matched moulds of upper and lower mould (102) and (101) then in regular turn, foamable, the demoulding, it is characterized in that: the patrix that sprayed remover (102) surface before matched moulds sprays a last polyurethane enamelled coating again, the polyurethane enamelled coating before matched moulds preheating sclerosis become a thin layer that invests the patrix surface, the periphery of the patrix before matched moulds (102) is nested with hollow and peripheral openings (131) towards the hollow limit of inboard shell (13), formed in the foamable process of polyurethane enamelled coating behind matched moulds one with foamed damping layer (16) clinkering smooth thin polyurethane rete (14) together, foaming raw material (15) is filled into hollow limit shell (13) in by peripheral openings (131) when foamable and hollow limit shell (13) and plastic shell (12) is combined.
3, press the manufacture method of the described crash helmet of claim 2, it is characterized in that: the temperature of mould (10) preheating is 60 ℃-80 ℃, the mould that sprayed the polyurethane enamelled coating must be moved into when the end reaches preheat temperature to shift out after the heat hardening in the heating furnace (11) at mould (10) again and be nested with hollow limit shell (13), hollow limit shell (13) and being nested with before or after the spraying polyurethane enamelled coating of patrix (102) are carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95115447 CN1043726C (en) | 1995-09-19 | 1995-09-19 | Safety helmet and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95115447 CN1043726C (en) | 1995-09-19 | 1995-09-19 | Safety helmet and its manufacture method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1131524A CN1131524A (en) | 1996-09-25 |
| CN1043726C true CN1043726C (en) | 1999-06-23 |
Family
ID=5080489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95115447 Expired - Fee Related CN1043726C (en) | 1995-09-19 | 1995-09-19 | Safety helmet and its manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1043726C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434004C (en) * | 2006-04-15 | 2008-11-19 | 黄正和 | Safe helmet and its production process |
| TWI501736B (en) * | 2013-08-30 | 2015-10-01 | ||
| CN110776614A (en) * | 2019-10-28 | 2020-02-11 | 肇庆博涵体育用品有限公司 | Soft-hard foam combination process for PU safety helmet |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6292952B1 (en) | 1998-09-25 | 2001-09-25 | Sportscope, Inc. | Insert-molded helmet |
| GB0314934D0 (en) * | 2003-06-26 | 2003-07-30 | Qinetiq Ltd | Safety helmets |
| TW200927009A (en) | 2007-12-25 | 2009-07-01 | Tze-Ping Wang | Integrally safety helmet and manufacturing method thereof |
| CN101485502A (en) * | 2008-01-14 | 2009-07-22 | 王泽平 | Integrated molding safety helmet and method for producing the same |
| CN101417489B (en) * | 2008-11-14 | 2014-07-30 | 联塑(杭州)机械有限公司 | Helmet manufacture method and products thereof |
| CN101954699A (en) * | 2010-09-29 | 2011-01-26 | 陈尚文 | Manufacture method of integral filming foaming profile |
| CN104492067A (en) * | 2015-01-14 | 2015-04-08 | 飞虎(厦门)聚氨酯制品有限公司 | PU (polyurethane) protective helmet for taekwondo and preparation process thereof |
| CN104924823A (en) * | 2015-06-15 | 2015-09-23 | 王健 | Technology for decorating strippable coating on helmet |
| WO2018094603A1 (en) * | 2016-11-23 | 2018-05-31 | 广州艾科新材料股份有限公司 | Surface-treatment-free die for polyurethane product |
| CN106723575A (en) * | 2016-11-29 | 2017-05-31 | 昆山顶牛市政建设有限公司 | A kind of cap shell of construction safety cap |
| CN106799852A (en) * | 2016-12-08 | 2017-06-06 | 佛山林至高分子材料科技有限公司 | A kind of light-high-strength buffering composite material and preparation method and application |
| CN108433228A (en) * | 2018-02-09 | 2018-08-24 | 厦门新凯复材科技有限公司 | A kind of safety cap and its production method |
| CN111067182A (en) * | 2018-10-22 | 2020-04-28 | 上海杰事杰新材料(集团)股份有限公司 | Safety helmet and preparation method thereof |
| CN114750438B (en) * | 2022-03-28 | 2024-03-19 | 深圳安迪上科新材料科技有限公司 | Air bag manufacturing process and air bag |
-
1995
- 1995-09-19 CN CN 95115447 patent/CN1043726C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434004C (en) * | 2006-04-15 | 2008-11-19 | 黄正和 | Safe helmet and its production process |
| TWI501736B (en) * | 2013-08-30 | 2015-10-01 | ||
| CN110776614A (en) * | 2019-10-28 | 2020-02-11 | 肇庆博涵体育用品有限公司 | Soft-hard foam combination process for PU safety helmet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1131524A (en) | 1996-09-25 |
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