CN1676299A - Foaming-formed product and method for producing same - Google Patents

Foaming-formed product and method for producing same Download PDF

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Publication number
CN1676299A
CN1676299A CNA2005100596970A CN200510059697A CN1676299A CN 1676299 A CN1676299 A CN 1676299A CN A2005100596970 A CNA2005100596970 A CN A2005100596970A CN 200510059697 A CN200510059697 A CN 200510059697A CN 1676299 A CN1676299 A CN 1676299A
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CN
China
Prior art keywords
mentioned
molded product
foam molded
mould
even surface
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CNA2005100596970A
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Chinese (zh)
Inventor
竹田和生
川岛大一郎
矢野正信
佐藤宏一
中尾耕司
长田佳美
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Toyoda Gosei Co Ltd
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Toyoda Gosei Co Ltd
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Filing date
Publication date
Priority claimed from JP2004144088A external-priority patent/JP4412053B2/en
Priority claimed from JP2004144089A external-priority patent/JP2005324424A/en
Priority claimed from JP2004144087A external-priority patent/JP4311275B2/en
Priority claimed from JP2004286292A external-priority patent/JP4222281B2/en
Application filed by Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Publication of CN1676299A publication Critical patent/CN1676299A/en
Pending legal-status Critical Current

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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
    • B29C44/58—Moulds
    • B29C44/586—Moulds with a cavity increasing in size during foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/04—External Ornamental or guard strips; Ornamental inscriptive devices thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B60R13/0206—Arrangements of fasteners and clips specially adapted for attaching inner vehicle liners or mouldings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

A foamed molded product having joining flat surfaces to be joined to a joining object, in which the foaming ratio of an ordinary portion is higher than the foaming ratio of joining flat surface forming portions provided with the joining flat surfaces. Preferably, the foamed molded product has the joining flat surface forming portions on an end or both ends of the ordinary portion. Preferably, the foamed molded product has an arch portion whose sectional shape is substantially arcuate and the joining flat surfaces are provided on both ends of a concave side face of the arch portion. Preferably, when the foaming ratio of the joining flat surface forming portion is assumed to be A and the foaming ratio of the ordinary portion is assumed to be B, B/A=1.01-2.5.

Description

Foam molded product and manufacture method thereof
Technical field
The present invention relates to have and be engaged to foam molded product and the manufacture method thereof that for example for motor vehicle side ornamental strip etc. is engaged the joint even surface on the thing.
Background technology
For example, as for motor vehicle side ornamental strip, be extensive use of and do not make its foaming, with the moulding product of solid state moulding.That is, existing solid side ornamental strip 9 for example, has the roughly arc arch of section 90 as shown in figure 45, and the face of its recessed side is used as the back side.In addition, side ornamental strip 9 its 90 two ends, arch the rear side of composition surface formation portion 91 a plurality of flanges 915 are set, adhesive tape 99 grades in two sides are attached on its end face 911, thereby are engaged on the car body.
But in order to improve the zygosity to car body of above-mentioned side ornamental strip, it is thicker flange 915 must to be made thickness, perhaps makes flangeless solid thickness than thickness portion, to increase the contact area with two sides adhesive tape 99.
But under the whichever situation, the decorative cover that all can be created in arch 90 is easy to generate shrinkage cavity, and reduces the problem of appearance characteristics.
In addition, in this synthetic resin of above-mentioned side ornamental strip,, require to change into foam molded product in order to realize purpose such as lightweight.But, only change foam molded product into, have the shape instability, can not get the situation of enough rigidity.Particularly, for this moulding product that the composition surface is arranged of side ornamental strip, the structure of optimum foam molded product and manufacture method, also not research fully so far.In addition, as the method for foaming, various motions (with reference to patent documentation 1,2) are arranged so far.
Patent documentation 1: the spy opens flat 8-244066 communique
Patent documentation 2: the spy opens flat 10-180825 communique
Summary of the invention
An order of the present invention is, the existing issue point in view of relevant provides appearance characteristics good, and has the foam molded product and the manufacture method thereof of the structure that is suitable for having the moulding product that engage even surface.
The 1st aspect of the present invention is to have and the foam molded product that is engaged the composition plane that thing engages, it is characterized in that,
The expansion ratio of general portion is than the expansion ratio height of the joint even surface formation portion that is provided with above-mentioned joint even surface.
Above-mentioned foam molded product, as mentioned above, the expansion ratio that engages even surface formation portion is lower than the expansion ratio of general portion, keeps low range or approaching solid state.Thus, the above-mentioned joint even surface formation portion rigidity height of above-mentioned joint even surface is arranged, shape stability is good.So, can obtain stable engagement state when being engaged thing and engaging.In addition, the flatness of above-mentioned joint even surface is improved, its adherence with adhesion parts such as two sides adhesive tapes be strengthened, thereby improve adherence.
In addition, because improved the expansion ratio of above-mentioned general portion, so when it is made, can prevent bad orders such as shrinkage cavity.This is to consider, because be used to make the blow pressure of the high foaming of above-mentioned general portion, also work not only to general portion, and to the boundary member that engages between even surface formation portion and joint even surface formation portion and the general portion, can prevent shrinkage cavity and make the whole raising of appearance characteristics.
And, replace with foam molded product of the present invention by having solid product now, can improve as mentioned above with by the zygosity of adhesion, and by lightweight and reduce to use material and reduce cost.
The 2nd aspect of the present invention is the manufacture method of foam molded product, and this foam molded product has and is engaged the joint even surface that thing engages, and generally the expansion ratio of portion is characterized in that than the expansion ratio height of the joint even surface formation portion that is provided with this joint even surface,
Use is with bed die, this mould has fixed die at least and this fixed die is moved mould relative to advance and retreat, possesses the cavity that is used to form above-mentioned foam molded product, with with this cavity in the mode that forms with the cavity face adjacency of the above-mentioned composition surface that engages even surface of formation dispose above-mentioned mobile mould, make this move die face to above-mentioned general portion
In above-mentioned cavity, spray and to contain the synthetic resin material of blowing agent or to contain the synthetic resin material of foaming with gas, then, above-mentioned mobile mould is retreated and increase the volume of above-mentioned general portion, thereby impel foaming.
In manufacture method of the present invention, use the mould that possesses said fixing mould and mobile mould, will contain aforesaid blowing agent or foaming and use the synthetic resin injection of material of gas to above-mentioned cavity.At this moment, with above-mentioned general portion above-mentioned mobile mould in opposite directions be forward travel state, the volume of cavity is minimum.
Then, after the injection of above-mentioned synthetic resin material was finished, above-mentioned mobile mould retreated, so that the volume of above-mentioned general portion increases in the cavity.Accompany with it, contain blowing agent or foaming above-mentioned synthetic resin material, foam in above-mentioned general portion concentrated area with the pressure of gas expansion by above-mentioned blowing agent or foaming with gas.And the material that is positioned at above-mentioned joint even surface formation portion also produces some foaming to general portion release pressure.By the pressure of this foaming, produce shrinkage cavity in the time of can suppressing moulding, the appearance characteristics that obtains is improved.
In addition, the foam molded product that obtains, the joint even surface formation portion that above-mentioned joint even surface is arranged forms under the low foamed state of the constancy of volumeization when moulding.So, can fully obtain engaging the flatness of even surface, to improve and to be engaged the adherence of thing.
The 3rd aspect of the present invention is to have and the foam molded product that is engaged the joint even surface that thing engages, it is characterized in that,
The expansion ratio that is provided with the expansion ratio of joint even surface formation portion of above-mentioned joint even surface and general portion about equally.
Foam molded product of the present invention, as mentioned above, the expansion ratio of the expansion ratio of general portion and joint even surface formation portion about equally.Thus, when making its foaming, can obtain the blow pressure of ensemble average during manufacturing.Thus, can prevent that with shrinkage cavity etc. be the bad order in source, obtain having the foam molded product of very good appearance characteristics.
And, because above-mentioned joint even surface formation portion also forms by foaming, compare the area that can increase above-mentioned joint even surface with the situation of existing flange, improve the zygosity of having used two sides adhesive tape etc.
And, replace with foam molded product of the present invention by having solid product now, can improve as mentioned above with by the zygosity of adhesion, and by lightweight and reduce to use material and reduce cost.
The 4th aspect of the present invention is the manufacture method of foam molded product, this foam molded product has and is engaged the joint even surface that thing engages, and is provided with the expansion ratio of the joint even surface formation portion of this joint even surface, with the expansion ratio of general portion about equally, it is characterized in that
Use is with bed die, this mould has fixed die and reaches the move mould of this fixed die relative to advance and retreat, possesses the cavity that is used to form above-mentioned foam molded product, form the mode that is clipped in the middle with cavity face with the composition surface that is formed above-mentioned joint even surface in this cavity and dispose above-mentioned mobile mould, make this move die face to above-mentioned general portion
At above-mentioned mobile mould with it between the mould part of adjacency, be provided for reducing the thermal insulation structure that heat is between the two transmitted,
The formation of above-mentioned composition surface is being maintained than above-mentioned mobile mould high temperature with cavity face, and this mobile mould is maintained than under the state of above-mentioned composition surface formation with cavity face low temperature, in above-mentioned cavity, spray and contain the synthetic resin material of blowing agent or contain the synthetic resin material of foaming with gas, then, above-mentioned mobile mould is retreated increasing the volume of above-mentioned general portion, thereby impel foaming.
In manufacture method of the present invention, use the mould that possesses said fixing mould and mobile mould, make the synthetic resin injection of material that contains blowing agent or foaming usefulness gas as mentioned above to above-mentioned cavity.At this moment, with above-mentioned general portion above-mentioned mobile mould in opposite directions be forward travel state, the volume of cavity is minimum.
Then, after the injection of above-mentioned synthetic resin material was finished, above-mentioned mobile mould retreated, so that the volume of above-mentioned general portion increases in the cavity.Accompany with it, contain the above-mentioned synthetic resin material of blowing agent or foamed gas, begin foaming with the pressure of gas expansion in above-mentioned general portion by above-mentioned blowing agent or foaming., in the present invention, be maintained than above-mentioned mobile mould high temperature with the mould part of above-mentioned mobile mould adjacency.Thus, for the foaming easness of the material that contacts with mould itself, the material of the joint even surface formation portion in the condition of high temperature foams easily.So, being accompanied by material and flowing, the foaming that engages even surface formation portion is also promoted simultaneously.
So, finally, increase the foaming cause and the easness of the foaming that caused by the condition of high temperature combines by volume, and can obtain whole foamed state on a rough average.
So, by blow pressure on a rough average like this, produce shrinkage cavity in the time of can suppressing moulding, the appearance characteristics that obtains is improved.
In addition, the foam molded product that obtains, the joint even surface formation portion with above-mentioned joint even surface does not make volume-variation form when moulding.So, can fully obtain engaging the flatness of even surface, and improve and be engaged the adherence of thing.
Description of drawings
Fig. 1 is among the embodiment 1, the biopsy cavity marker devices oblique view of foam molded product.
Fig. 2 is among the embodiment 1, the key diagram of the formation of expression injection apparatus and mould.
Fig. 3 is among the embodiment 1, and expression is filled to the synthetic resin material key diagram of the state in the mould.
Fig. 4 is among the embodiment 1, and expression makes the key diagram of the state that the mobile mould of mould retreats.
Fig. 5 is among the embodiment 1, and expression makes the key diagram of foam molded product from the state of mold releasability.
Fig. 6 is among the embodiment 1, and expression makes mould close the key diagram of the state of mould.
Fig. 7 is among the embodiment 2, the biopsy cavity marker devices oblique view of foam molded product.
Fig. 8 is among the embodiment 2, and expression is filled to the synthetic resin material key diagram of the state in the mould.
Fig. 9 is among the embodiment 2, and expression makes the key diagram of the state that the mobile mould of mould retreats.
Figure 10 is among the embodiment 2, and expression makes the key diagram of foam molded product from the state of mold releasability.
Figure 11 is among the embodiment 2, and expression makes mould close the key diagram of the state of mould.
Figure 12 is among the embodiment 3, the biopsy cavity marker devices oblique view of foam molded product.
Figure 13 is among the embodiment 4, the biopsy cavity marker devices oblique view of foam molded product.
Figure 14 is among the embodiment 5, the biopsy cavity marker devices oblique view of foam molded product.
Figure 15 is among the embodiment 5, the key diagram of the formation of expression ejecting device and mould.
Figure 16 is among the embodiment 5, and expression is filled to the synthetic resin material key diagram of the state in the mould.
Figure 17 is among the embodiment 5, and expression makes the key diagram of the state that the mobile mould of mould retreats.
Figure 18 is among the embodiment 5, and expression makes the key diagram of foam molded product from the state of mold releasability.
Figure 19 is among the embodiment 5, and expression makes mould close the key diagram of the state of mould.
Figure 20 is among the embodiment 6, and expression is filled to the synthetic resin material key diagram of the state in the mould.
Figure 21 is among the embodiment 6, and expression makes the key diagram of the state that the mobile mould of mould retreats.
Figure 22 is among the embodiment 6, and expression makes the key diagram of foam molded product from the state of mold releasability.
Figure 23 is among the embodiment 6, and expression makes mould close the key diagram of the state of mould.
Figure 24 is among the embodiment 7, the key diagram of the formation of expression ejecting device and mould.
Figure 25 is among the embodiment 7, and expression is filled to the synthetic resin material key diagram of the state in the mould.
Figure 26 is among the embodiment 7, and expression makes the key diagram of the state that the mobile mould of mould retreats.
Figure 27 is among the embodiment 7, and expression makes the key diagram of foam molded product from the state of mold releasability.
Figure 28 is among the embodiment 7, and expression makes mould close the key diagram of the state of mould.
Figure 29 is among the embodiment 8, and expression is filled to the synthetic resin material key diagram of the state in the mould.
Figure 30 is among the embodiment 8, and expression makes the key diagram of the state that the mobile mould of mould retreats.
Figure 31 is among the embodiment 8, and expression makes the key diagram of foam molded product from the state of mold releasability.
Figure 32 is among the embodiment 8, and expression makes mould close the key diagram of the state of mould.
Figure 33 is among the embodiment 9, the biopsy cavity marker devices oblique view of foam molded product.
Figure 34 is among the embodiment 9, the key diagram of the formation of expression ejecting device and mould.
Figure 35 is among the embodiment 9, and expression is filled to the synthetic resin material key diagram of the state in the mould.
Figure 36 is among the embodiment 9, and expression makes the key diagram of the state that the mobile mould of mould retreats.
Figure 37 is among the embodiment 9, and expression makes the key diagram of foam molded product from the state of mold releasability.
Figure 38 is among the embodiment 9, and expression makes mould close the key diagram of the state of mould.
Figure 39 is among the embodiment 10, and expression is filled to the synthetic resin material key diagram of the state of mould.
Figure 40 is among the embodiment 10, and expression makes the key diagram of the state that the mobile mould of mould retreats.
Figure 41 is among the embodiment 10, and expression makes the key diagram of foam molded product from the state of mold releasability.
Figure 42 is among the embodiment 10, and expression makes mould close the key diagram of the state of mould.
Figure 43 is among the embodiment 11, the biopsy cavity marker devices oblique view of foam molded product.
Figure 44 is among the embodiment 12, the biopsy cavity marker devices oblique view of foam molded product.
Figure 45 is in the conventional example, the biopsy cavity marker devices oblique view of foam molded product
The specific embodiment
The foam molded product of the 1st aspect of the present invention as mentioned above, makes the expansion ratio that engages even surface formation portion and general portion have tangible different.Here, above-mentioned joint even surface formation portion is equivalent to be provided with the position of aforesaid joint even surface.Specifically, for example, can be with the part that engages even surface projection on thickness direction as above-mentioned joint even surface formation portion.At this moment, for example,, be provided for retraining under the situation of flange of allocation position of grafting material such as two sides adhesive tape, can think that this flange etc. also is the part of above-mentioned joint even surface formation portion in the one or both ends that engage even surface.
In addition, above-mentioned general portion is meant above-mentioned joint even surface formation portion part in addition.
In addition, under the indefinite situation of boundary member that engages between even surface formation portion and the general portion, can be with the part that really can be defined as engaging even surface formation portion or general portion, for example, engage the expansion ratio in the face of part partly of the middle body of even surface, represent the expansion ratio of above-mentioned joint even surface formation portion, with the expansion ratio of representing very much above-mentioned general portion away from the partial foaming multiplying power of the part that engages even surface.
In addition, above-mentioned foam molded product can adopt the structure that above-mentioned joint even surface formation portion is set in the one or both ends of above-mentioned general portion.For example, the structure that engages partes glabra is set as two ends in general portion, as described later, can be for making general portion from engaging the roughly arc of even surface projection.The notion of said here roughly arc (arch) comprises roughly コ font, chevron shape roughly, comprises the different shape of the arbitrary portion projection between the two ends.In addition, also can general portion be set to not protruding and engage even surface together be roughly same plane.In addition, also can be only the joint even surface be set at an end of general portion.This situation can make general portion make global shape be L font roughly from engaging the even surface projection, also can not make general portion protruding and be roughly same plane with engaging even surface.
Especially, above-mentioned foam molded product preferably has section shape and is roughly arc arch, and above-mentioned joint even surface is arranged at the lip-deep two ends of the recessed side in above-mentioned arch.In this case, it is effective especially to set the difference of above-mentioned expansion ratio.Here said roughly arc arch is aforesaid, comprises コ font roughly, chevron shape roughly, comprises the different shape of the arbitrary portion projection between the two ends.
In addition, in above-mentioned foam molded product, the expansion ratio of above-mentioned joint even surface formation portion is designated as A, the expansion ratio of above-mentioned general portion is designated as under the situation of B, preferred B/A=1.01～2.5.Under the situation of above-mentioned B/A less than 1.01, the problem of generation is can not fully obtain forming portion's height and the above-mentioned effect of generation by the expansion ratio of above-mentioned general portion than above-mentioned joint even surface.On the other hand, above-mentioned B/A surpasses under 2.5 the situation, and the problem of generation is, can not get the intensity as product, and foaming layer appears in the surface, can not satisfy appearance characteristics.
As the assay method of this expansion ratio, for example, can calculate by the density of measuring above-mentioned joint even surface formation portion and general portion.In addition, in this case, if it is very clear to engage the boundary member of even surface formation portion and general portion, then can be respectively calculate with the integral body of these parts, but under the indefinite situation of boundary member, can engage the part in the even surface formation portion with being included in really and be included in part in the general portion really, compare by the expansion ratio of obtaining these parts as separately representative part.
In addition, preferably between above-mentioned joint even surface formation portion and above-mentioned general portion, form slot part, this slot part from be provided with the above-mentioned surface depression that engages the face homonymy of even surface.
In this case, owing between above-mentioned general portion and above-mentioned joint even surface formation portion, adopt the structure that forms above-mentioned slot part, so can stably carry out the control of above-mentioned expansion ratio during fabrication.
In addition, above-mentioned foam molded product is preferably as the side ornamental strip on the car body that is engaged to vehicle.The side ornamental strip, the shape that is suitable for that the arch is arranged and above-mentioned joint even surface is arranged overleaf is by adopting the effect of the formation generation of controlling expansion ratio as mentioned above, very effective.
In addition, aspect the of the present invention the 2nd in, above-mentioned mould also can adopt following structure, be set to move the dynamic model that mould can be advanced and retreat but promptly have relative to above-mentioned, but be provided with should dynamic model and the said fixing mould can relatively advance and retreat.In this case, can adopt following structure, use by the mold structure of general fixed die, but above-mentioned mobile module is filled on the above-mentioned dynamic model with movable die combination.In addition; but also can adopt above-mentioned dynamic model and the integrated formation of mobile mould (with reference to embodiment 2); but in this case; but integral body is called dynamic model or mobile mould, and which is all right; at least; be the part that can advance and retreat with respect to fixed die when moulding, promote the part of above-mentioned general portion foaming to be equivalent to above-mentioned mobile mould, this point does not change.
In addition, above-mentioned mould preferably has the ejector die that is used to make the foam molded product demoulding after the moulding, above-mentioned composition surface is formed the end face that is arranged at this ejector die with cavity face.In this case, effect and composition surface that above-mentioned ejector die can have so-called jemmy concurrently form the effect of using cavity face, make the formation of above-mentioned mould reasonable.
In addition, above-mentioned foam molded product, preferably have section shape and be arc arch roughly, and above-mentioned joint even surface is arranged on the lip-deep two ends of the recessed side in above-mentioned arch, form on 2 above-mentioned composition surfaces with above-mentioned mobile die clamp and dispose with the mode between the cavity face.In this case, the action effect of above-mentioned manufacture method is effective especially.
In addition, preferably in above-mentioned cavity, be pre-charged with precompressed and give precompressed with gas, carry out above-mentioned injection then.In this case, when above-mentioned synthetic resin injection of material is to the above-mentioned cavity,, can give the synthetic resin material to be called as the pressure of counter-pressure by the precompressed that above-mentioned precompressed provides with gas.Thus, even with than low-pressure fuel injection, the synthetic resin material that is ejected also can be moderately pressurized.Thus, near the outer peripheral face of moulding product, harden with solid state, can improve appearance characteristics as final so-called epidermal area.
In addition, as above-mentioned foam molded product, under the manufacture method situation of foam molded product as described below, preferably use mould as described below.This foam molded product forms slot part between above-mentioned joint even surface formation portion and above-mentioned general portion, this slot part from the surface depression that is provided with the above-mentioned face homonymy that engages even surface.This mould forms on above-mentioned composition surface with on the cavity face and boundary member above-mentioned mobile mould, is formed for forming the jut of above-mentioned slot part.
In this case, on above-mentioned composition surface forms with cavity face, above-mentioned jut is set at boundary member with above-mentioned mobile mould.Thus, after above-mentioned mobile mould retreated, above-mentioned jut was realized the effect on so-called weir, suppressed to be positioned at the material that engages even surface formation portion and easily moved to general portion.Thus, the position that produces foaming is concentrated to general portion, the difference of above-mentioned expansion ratio is embodied more clearly.
In addition, be positioned at the material of above-mentioned joint even surface formation portion, also the part on never above-mentioned weir produces some foaming to general portion release pressure.By the pressure of these foaming, produce shrinkage cavity in the time of can suppressing to be shaped, the appearance characteristics that obtains is improved.
And the joint of the foam molded product that obtains is formation portion smoothly, and the low foamed state of the constancy of volumeization forms in the time of can be with moulding.Thus, can fully obtain being located at the flatness of the joint even surface that engages even surface formation portion, in the hope of improving and the adherence that is engaged thing.
In addition, the blowing agent as above-mentioned synthetic resin material is contained can use NaHCO 3(sodium acid carbonate) or other various materials.
In addition, as the foaming gas that above-mentioned synthetic resin material is contained, can use for example carbon dioxide (CO 2), nitrogen (N 2) or other non-active gas.
In addition, as the above-mentioned precompressed gas that is used to give above-mentioned counter-pressure, can use air or with above-mentioned foaming with the identical gas of gas.
In addition, with the precompressed that gas gives, be preferably the scope of 0.1～1.0MPa by above-mentioned precompressed.Under the situation of the not enough 0.1MPa of precompressed, can not give sufficient counter-pressure, on the other hand, exceed under the situation of 1.0MPa, produce the problem that suppresses foaming.
In addition, as above-mentioned synthetic resin material, for example, can use various synthetic resin such as polypropylene thermoplastic olefin resins such as (PP) (TPO), polyolefins thermoplastic elastomer.In addition, can be to wherein adding Na 2CO 3Deng a kernel foaming agent.
In addition, above-mentioned mobile mould, the preferred maintenance at least than above-mentioned composition surface formation portion with cavity face temperature height.In this case because can make with the material of the right general portion of above-mentioned mobile die face than engaging even surface formation portion temperature height, and become the state of easier foaming, so can make the high foaming in general portion concentrated area more.
The optimum range of the temperature of above-mentioned mobile mould, different because of the kind of synthetic resin material, but probably be 20～60 ℃ scope.On the other hand, the part beyond the mobile mould preferably remains on 30～80 ℃ scope.
In addition, preferably at above-mentioned mobile mould with it between the mould part of adjacency, be provided for reducing the thermal insulation structure of heat transmission between the two, under the state that above-mentioned mobile mould maintenance is higher than other parts temperature, in above-mentioned cavity, spray and contain the synthetic resin material of blowing agent or contain the synthetic resin material of foaming with gas, then, above-mentioned mobile mould is retreated and increase the volume of above-mentioned general portion, thereby impel foaming.In this case, at above-mentioned mobile mould with above-mentioned adiabatic structure is set between the mould part of adjacency with it,, keep mobile mould than other mould part temperature height in the hope of reducing heat transmission between the two.And this condition of high temperature is because the effect of above-mentioned adiabatic structure, can keep and has bigger temperature difference in abutting connection with mould part.Thus, because can make the material of general portion, become the high state of material temperature, thereby become the state of easy foaming, so can impel the foaming of above-mentioned concentrated area more than joint even surface formation portion.
In addition, as the above-mentioned adiabatic structure that can adopt, for example be following structure, promptly above-mentioned mobile mould and with it the sliding friction surface between the mould part of adjacency heat-insulating material is set.
As the heat-insulating material of this situation, can utilize well-known heat-insulating material, for example, the material that constitutes by thermosetting resins such as phenolic resins.
As the foam molded product of the 3rd aspect of the present invention, above-mentioned foam molded product can adopt the structure that above-mentioned joint even surface formation portion is set in the one or both ends of above-mentioned general portion.For example, the structure that engages even surface is set as two ends in general portion, as described later, can be for making general portion from engaging roughly arc that even surface retreats.Here said roughly arc (arch) comprises roughly コ font, chevron shape roughly, comprises the different shape of the arbitrary portion projection between the two ends.In addition, also can be only the joint even surface be set at an end of general portion.This situation also can make general portion make global shape be L font roughly from engaging even surface and retreating.
Especially, above-mentioned foam molded product preferably has section shape and is roughly arc arch, and above-mentioned joint even surface is arranged at the lip-deep two ends of the recessed side in above-mentioned arch.In this case, it is effective especially to set the difference of above-mentioned expansion ratio.Here said roughly arc arch is aforesaid, comprises コ font roughly, chevron shape roughly, comprises the different shape of the arbitrary portion projection (retreating) between the two ends.
In addition, in the above-mentioned foam molded product, the expansion ratio of above-mentioned joint even surface formation portion is designated as A, the expansion ratio of above-mentioned general portion is designated as under the situation of B, preferred B/A=0.90～1.10.Above-mentioned B/A is departed under the situation of this scope, can produce defective owing to the difference of the above-mentioned joint even surface formation portion and the expansion ratio of general portion.And owing to be in this scope, for example, A, B can easily obtain the expansion ratio more than 1.2 times simultaneously.Thus, produce shrinkage cavity in the time of can suppressing moulding reliably.And, can easily obtain the foam molded product of average and high expansion ratio.
As the method for measuring of this expansion ratio, for example, can calculate by the density of measuring above-mentioned joint even surface formation portion and general portion.
In addition, above-mentioned foam molded product is preferably as the side ornamental strip on the car body that is engaged to vehicle.The side ornamental strip is suitable for having the arch and above-mentioned joint even surface shape is arranged overleaf, and by adopting the formation of controlling expansion ratio as mentioned above, the effect of generation is very effective.
In addition, aspect the of the present invention the 4th in, above-mentioned mould preferably adopts following structure, be provided with can be relative to the above-mentioned dynamic model that moves mould of advancing and retreat but promptly have, but be provided with should dynamic model and the said fixing mould can relatively advance and retreat.In this case, can adopt following structure, promptly use mold structure, but above-mentioned mobile module is filled on the above-mentioned dynamic model by general fixed die and movable die combination.In addition; but also can adopt above-mentioned dynamic model and the integrated formation of mobile mould; but in this case; but integral body is called dynamic model or mobile mould, and which is all right; at least; be the part that can advance and retreat with respect to fixed die when moulding, promote the part of the foaming of above-mentioned general portion to be equivalent to above-mentioned mobile mould, this point does not change.
In addition, above-mentioned mould preferably has the ejector die that is used to make the foam molded product demoulding after the moulding, above-mentioned composition surface is formed the end face that is arranged at this ejector die with cavity face.In this case, effect and composition surface that above-mentioned ejector die can have so-called jemmy concurrently form the effect of using cavity face, make the formation of above-mentioned mould reasonable.
In addition, preferably in above-mentioned cavity, be pre-charged with precompressed and give precompressed with gas, carry out above-mentioned injection then.In this case, when above-mentioned synthetic resin injection of material is to the above-mentioned cavity,, can give the synthetic resin material to be called as the pressure of counter-pressure by the precompressed that above-mentioned precompressed provides with gas.Thus, even with than low-pressure fuel injection, the synthetic resin material that is ejected also can be moderately pressurized.Thus, near the outer peripheral face of moulding product,,, can improve appearance characteristics with the solid state sclerosis as final so-called epidermal area.
In addition, the blowing agent as above-mentioned synthetic resin material is contained can use NaHCO 3(sodium acid carbonate), azodicarbonamide or other various materials.
In addition, as the foaming gas that above-mentioned synthetic resin material is contained, can use for example carbon dioxide (CO 2), nitrogen (N 2) or other non-active gas.
In addition, as the above-mentioned precompressed gas that is used to give above-mentioned counter-pressure, can use air or with above-mentioned foaming with the same gas of gas.
In addition, with the precompressed that gas gives, be preferably the scope of 0.1～1.0MPa by above-mentioned precompressed.Under the situation of the not enough 0.1MPa of precompressed, can not give sufficient counter-pressure, on the other hand, exceed under the situation of 1.0MPa, produce the problem that suppresses foaming.
In addition, as above-mentioned synthetic resin material, for example, can use various synthetic resin such as polypropylene thermoplastic olefin resins such as (PP) (TPO), polyolefins thermoplastic elastomer.In addition, can be to wherein adding Na 2CO 3Deng a kernel foaming agent.
In addition, the above-mentioned adiabatic structure as adopting in the manufacture method of above-mentioned the 4th aspect for example, is following structure, above-mentioned mobile mould and with it the sliding friction surface between the mould part of adjacency heat-insulating material is set.
As the heat-insulating material of this situation, can utilize well-known heat-insulating material, for example, form by thermosetting resins such as phenolic resins.
Embodiment
(embodiment 1)
With regard to embodiments of the invention related foam molded product and manufacture method thereof, use Fig. 1～Fig. 6 to describe.
The foam molded product 1 of present embodiment is to have and the foam molded product that is engaged the joint even surface 15 that thing engages as shown in Figure 1.
The expansion ratio of general portion 11 is than the expansion ratio height of the joint even surface formation portion 12 of the part that is provided with above-mentioned joint even surface 15.
Below, further describe.
Foam molded product 1 has section shape and is roughly arc arch 10, and above-mentioned joint even surface 15 is arranged at the lip-deep two ends of arch 10 recessed sides.And, compare with the expansion ratio that engages even surface formation portion 12, be clipped in the expansion ratio height of the general portion 11 between this joint even surface formation portion 12, this joint even surface formation portion 12 be 10 two ends, above-mentioned arch joint even surface 15 in the part of thickness direction projection.
As concrete expansion ratio, the expansion ratio of above-mentioned joint even surface formation portion is designated as A, the expansion ratio of above-mentioned general portion is designated as under the situation of B, be adjusted into the scope of B/A=1.01～2.5.
In addition, as shown in Figure 1, above-mentioned arch 10 is spreading all over outer peripheral face forms the thin skin shape that foams hardly on full week epidermal area 19.
In addition, the foam molded product 1 of present embodiment is the side ornamental strip that is engaged on the car body of vehicle, and constituted mode is for to be labelled to the two sides adhesive tape on the above-mentioned joint even surface 15, and joins to thus on the car body of the vehicle that is engaged thing.
Below, the method for making above-mentioned foam molded product 1 is described.
In the present embodiment, as shown in Figure 2,, use built-in screw rod 51, and the device of the blowing agent introduction part 54 that imports blowing agent is arranged as injection apparatus 5.
In the end of above-mentioned injection apparatus 5, connect mould 6.
The mould 6 of present embodiment has fixed die 62 as shown in Figure 2, and fixed die 62 is moved mould 615 relative to advance and retreat.And, but mould 6 has the dynamic model 61 that can advance and retreat relatively to mobile mould 615, but dynamic model 61 is set to and can advances and retreat relatively with fixed die 62.
And mould 6 has a pair of ejector die 612 that is used to make foam molded product 1 demoulding after the moulding, in the end face of ejector die 612 composition surface is set and forms with cavity face 82.This ejector die 612 is set to can advance and retreat relatively to mobile mould 615.
In a word, but above-mentioned dynamic model 61 is as shown in the drawing, by main part 610, pair of right and left ejector die 612 be clipped between a pair of ejector die 612 and mobile mould 615 combinations of configuration and constituting.This ejector die 612 has the composition surfaces that form above-mentioned 2 joint even surfaces 15 and forms with cavity face 82.
Mobile mould 615 only engage with arch 10 recessed sides lip-deep even surface formation portion 12 in the face of and dispose, can advance and retreat with respect to main part 610 by not shown actuator constitutes.
So, in the present embodiment, be formed for forming the cavity 8 of foam molded product 1 by fixed die 62, mobile mould 615 and ejector die 612.
Above-mentioned ejector die 612 also can be advanced and retreat with respect to main part 610 by not shown actuator.But as described later, it also is the parts that work when the demoulding of moulding product, keeps and main part 610 incorporate states when moulding.
Said fixing mould 62 is the mould of surperficial all cavity face 81 of being provided with corresponding arch 10 protruding sides, but but constituted mode for when the die sinking by the relatively moving of dynamic model 61 away from this dynamic model 61, but but when closing mould by moving of dynamic model 61 approaching dynamic model 61.
When making above-mentioned foam molded product 1 with the mould 6 of above-mentioned formation and injection apparatus 5, at first, as shown in Figure 2, but dynamic model 61 and fixed die 62 are cooperated and close mould, and, thereby the volume that mobile mould 615 is advanced make cavity 8 is for minimum.In addition, in the cavity 8,, be pre-charged with as precompressed and give precompressed with the air of gas by not shown approach.
In the injection apparatus 5, the limit will be as the NaHCO of blowing agent 3Importing synthetic resin material inner edge advances with its mixing and along screw rod 51.In addition, in the present embodiment, use PP, use by NaHCO in addition as the synthetic resin material 3The Na that thermal decomposition produces 2CO 3(sodium carbonate) is as sending out kernel foaming agent.
Then, when cavity 8 sprays,, the synthetic resin material that ejects is given the counter-pressure of appropriateness from injection apparatus 5 by the precompressed gas that is filled in the cavity 8.Thus, the limit forms so-called epidermal area 19 (Fig. 1) at the outer surface of moulding product, and the limit is filled in the cavity 8.
Next, as shown in Figure 3, after cavity 8 injected synthetic resin materials 100 fill up, as shown in Figure 4, mobile mould 615 is retreated.Thus, the volume of general portion significantly increases in the cavity 8.So, contain the above-mentioned synthetic resin material 100 of blowing agent, pressure concentrated area foaming in general portion 11 of expanding by means of blowing agent.In addition, be positioned at the material that engages in the even surface formation portion 12 and also produce some foaming to general portion 11 release pressures.
By these foaming, shown in Figure 1 as described above, obtain following structure, this is configured to compare with the expansion ratio that engages even surface formation portion 12, is clipped in the expansion ratio height of the general portion 11 between this joint even surface formation portion 12.In addition, arch 10 be configured to cover outer peripheral faces week entirely by the epidermal area 19 of the thin skin shape of foaming hardly.
So the pressure during by such foaming produces shrinkage cavity in the time of can suppressing moulding, the appearance characteristics that obtains is also good.
In addition, possess the above-mentioned ejector die 612 that the composition surface that forms above-mentioned joint even surface 15 forms with cavity face 82 and in moulding, be maintained fixed the position.Therefore, the joint even surface formation portion 12 that faces with it forms with the state of low foaming.So, engage even surface 15 and obtain so that above-mentioned composition surface is formed the state and the very smooth state that verily duplicate with the flatness of cavity face 82.So, engage at this and to paste two sides adhesive tape etc. on even surface 15 and join under the situation on the car body, can obtain its zygosity fully.
In addition, after moulding finished, as shown in Figure 5, the die sinking but dynamic model 61 and fixed die 62 are disconnected from each other made above-mentioned ejector die 612 before main part 610 and then make foam molded product 1 demoulding simultaneously.
After this, as shown in Figure 6,, when ejector die 612 is reset into original position, but dynamic model 61 and fixed die 62 are cooperated and the pass mould for the next foam molded product of moulding.Then, return the state of the Fig. 2 that makes mobile mould 615 move to progressive position once more after, by carrying out above-mentioned series of formed repeatedly, the above-mentioned foam molded product 1 of moulding continuously.
As mentioned above, in the present embodiment, use the mould 6 only possess the mobile mould of facing with the back side of general portion 11 615, make and contain as mentioned above that the synthetic resin material 100 of blowing agent retreats it after being injected in the cavity 8.Then, can move retreating of mould 615, promote with general portion 11 to be the foaming at center, easily obtain the foam molded product 1 of above-mentioned structure by means of this.
And the foam molded product 1 that obtains in the present embodiment as above-mentioned, engages the expansion ratio of even surface formation portion 12, and is lower than the expansion ratio of general portion 11, and keeps low range or be bordering on solid state.Thus, have the rigidity height of the joint even surface formation portion 12 that engages even surface 15, shape stability is good.So, can obtain stable engagement state when thing engages with being engaged.In addition, the flatness that engages even surface 15 is improved, the cohesive of the adhesion parts of raising and two sides adhesive tape etc., and adherence is improved.
In addition, because improved the expansion ratio of general portion 11, so during fabrication as mentioned above, also can prevent the bad order of shrinkage cavity etc.
In addition, by having the foam molded product 1 that solid product replace with present embodiment now, can improve as mentioned above with by the zygosity of adhesion, and can and reduce use material and reduce cost by lightweight.
In addition, in the present embodiment, adopt to make in the synthetic resin material and contain blowing agent, thus blowing agent foam (so-called chemical blowing).Also can the adopting of generation makes to be contained in the synthetic resin material as foaming with the carbon dioxide of gas etc., by this foaming with gas foaming (so-called physical blowing).This point is all the same in all following embodiment.
(embodiment 2)
Present embodiment such as Fig. 8～shown in Figure 11, replace the mould 6 among the embodiment 1, use the mould 7 that some structural differences are arranged with it.And in the present embodiment, as shown in Figure 7, the shape of the foam molded product 102 of moulding object be not the arch shape that is provided with recess, but rear side is almost the shape on plane.And, engaging even surface 152 and engage the two ends that even surface formation portion 122 is located at width, the part that is clipped between it is general portion 112.
In addition, the mould 7 of Shi Yonging in the present embodiment as Fig. 8～shown in Figure 11, but has fixed die 72 and dynamic model 71, move mould 715 but possess integratedly on should dynamic model 71 to what fixed die 72 was advanced and retreat relatively, but between fixed die 72 and dynamic model 71, be provided for forming the cavity 8 of foam molded product.
But above-mentioned dynamic model 71 as shown in Figure 8, and main part 710 and pair of right and left ejector die 712 are arranged.This ejector die 712 has the composition surfaces that form above-mentioned 2 joint even surfaces 15 to form with cavity face 82.And, in the central authorities of main part 710, form the outstanding mobile mould 715 of mode only to face with general portion 112.That is, in the present embodiment, constituted mode is the main part 710 whole advance and retreat relatively that contain mobile mould 715, to realize moving of mobile mould 715.
In addition, end face (cavity face) at mobile mould 715 is provided with smooth surface, and constituted mode is, when mobile mould 715 is outstanding, form with cavity face 82 outstandingly forward, when mobile mould 715 retreats, become with the composition surface and form with cavity face 82 in one plane state roughly than the composition surface.
Above-mentioned ejector die 712 as shown in Figure 8, and is identical with the ejector die 612 of embodiment 1.
Other structures on the mould 7 are identical with embodiment 1.
When making above-mentioned foam molded product 102 with the mould 7 of above-mentioned formation and injection apparatus 5, at first, as shown in Figure 8, but dynamic model 71 and fixed die 72 are cooperated and the pass mould, and, thereby the volume that the main part 710 that comprises mobile mould 715 is advanced make cavity 8 is for minimum.In addition, in the cavity 8,, be pre-charged with as precompressed and give precompressed with the air of gas by not shown approach.Then, with embodiment 1 in the same manner, filled synthetic resin material 100 in cavity 8.
After this, as shown in Figure 9, keep ejector die 712 and the main part 710 that comprises mobile mould 715 is retreated.Thus, the volume of general portion significantly increases in the cavity 8.So the concentrated area produces foaming in general portion 112.
In addition, be positioned at the material that engages in the even surface formation portion 122 and also produce some foaming, but to compare expansion ratio very low with general portion 112 to general portion 112 release pressures.
In addition, in the present embodiment, the back side of foam molded product 102 is the smooth surface of no recess, and the back side of general portion 112 and joint even surface 152 are in roughly state (with reference to figure 7) in one plane.
Next, after moulding finishes, as shown in figure 10, the die sinking but dynamic model 71 and fixed die 72 are disconnected from each other, make simultaneously above-mentioned ejector die 712 from main part 710 significantly before so that make foam molded product 102 demouldings.
After this, as shown in figure 11,, when ejector die 712 is reset into original position, but dynamic model 71 and fixed die 72 are cooperated and the pass mould for the next foam molded product of moulding.Then, return the state of Fig. 8 once more after, by carrying out above-mentioned series of formed repeatedly, the above-mentioned foam molded product 102 of moulding continuously.
Other can obtain action effect similarly to Example 1.
(embodiment 3)
In the present embodiment, represented to make the 1st variation of the shape change of foam molded product of the present invention.
The foam molded product 2 of the 1st variation as shown in figure 12, have arch 20 and with the ornamental portion 28 of one end adjacency.
The arch 20 of this foam molded product 2, two ends have and are engaged the joint even surface 25 that thing engages on the surface of above-mentioned arch 20 recessed sides.And, compare with the expansion ratio that engages even surface formation portion 22, be clipped in the expansion ratio height of the general portion 21 between this joint even surface formation portion 22.The part that the joint even surface 25 that this joint even surface formation portion 22 is 20 two ends from the arch is upwards set up.
When making foam molded product 2, use to have the cavity that is used for moulding arch 20 and be used for the mould (diagram omit) of the ornamental portion of moulding ornamental portion 28 with cavity, its cavity is partly carried out similarly to Example 1 operation.Thus, can similarly control general portion and the expansion ratio that engages even surface formation portion with the situation of embodiment 1.Other are identical with embodiment 1.
(embodiment 4)
In the present embodiment, represented to make the 2nd variation of the shape change of foam molded product of the present invention.
The foam molded product 3 of the 2nd variation has the 310, the 2nd arch 320, the 1st arch and the ornamental portion 38 of adjacency between them as shown in figure 13.
The 1st arch 310 of this foam molded product 3 at the lip-deep two ends of the 1st arch 310 recessed sides, has and is engaged the joint even surface 351,352 that thing engages.And, compare with the expansion ratio that engages even surface formation portion 312,313, be clipped in the expansion ratio height of the general portion 311 between this joint even surface formation portion 312,313.This joint even surface formation portion the 312, the 313rd, the part of upwards setting up from the joint even surface 351,352 at 310 two ends, the 1st arch.
In addition, above-mentioned joint even surface 351 correspondences are engaged thing (diagram slightly) shape and are obliquely installed, and, the outstanding flange 36 that is formed for limiting the position of two sides adhesive tape 99 in its both sides.
In addition, about engaging even surface 352, also can change to not and be engaged the simple even surface that thing engages or the general part of portion.
Similarly, the 2nd arch 320 is at the lip-deep two ends of the 2nd arch 320 recessed sides, has and is engaged the joint even surface 353,354 that thing engages.And, compare with the expansion ratio that engages even surface formation portion 322,323, be clipped in the expansion ratio height of the general portion 311 between this joint even surface formation portion 322,323.This joint even surface formation portion the 322, the 323rd, the part of upwards setting up from the joint even surface 353,354 at 310 two ends, the 1st arch.
In addition, above-mentioned in conjunction with even surface 354 the also outstanding flange 36 that is formed for limiting the position of two sides adhesive tape 99 in its both sides.
In addition, about engaging even surface 353, also can change to not and be engaged the simple even surface that thing engages or the general part of portion.
When making foam molded product 3, use with bed die (diagram is omitted), its 2 cavitys are partly carried out similarly to Example 1 operation.This mould has, have following composition surface and form the ejector die of using cavity face, and be useful on 2 cavitys of the 1st arch 310 of moulding respectively and the 2nd arch 320 and be used for the ornamental portion cavity of moulding ornamental portion 38, the formation of described composition surface has the shape that comprises the recess that forms flange 36 with cavity face.Thus, can similarly control general portion and the expansion ratio that engages even surface formation portion with the situation of embodiment 1.
Other are identical with embodiment 1.
In addition, among above-mentioned all embodiment, method as the expansion ratio of adjusting general portion and joint even surface formation portion, can adopt and carry out following method, this method carries out in cavity spraying the adjustment of the amount of retreating (amount of retreating) that makes opportunity (retreating opportunity) that above-mentioned mobile mould retreats or mobile mould behind the filled synthetic resin material, perhaps, constitute the temperature adjustment of each mold of mould.
(embodiment 5)
With regard to embodiments of the invention related foam molded product and manufacture method thereof, use Figure 14～Figure 19 to describe.
The foam molded product 105 of present embodiment is to have and the foam molded product that is engaged the joint even surface 15 that thing engages as shown in figure 14.
Compare with the expansion ratio that engages even surface formation portion 12, with the expansion ratio height of the general portion 11 that engages even surface formation portion 12 adjacent parts, this joint even surface formation portion 12 is the parts with the zone after the above-mentioned joint even surface 15 approximate vertical projections.And, engaging formation slot part 18 between even surface formation portion 12 and the general portion 11, this slot part 18 is from caving in the surface that is provided with the face homonymy that engages even surface 15.
Below, further describe.
It is roughly arc arch 10 that foam molded product 105 has section shape, and above-mentioned joint even surface 15 is arranged at the lip-deep two ends of arch 10 recessed sides.And, compare with the expansion ratio that engages even surface formation portion 12, be clipped in the expansion ratio height of the general portion 11 between this joint even surface formation portion 12.This joint even surface formation portion 12 be from 10 two ends, above-mentioned arch the part that upwards is provided with of joint even surface 15.
As concrete expansion ratio, the expansion ratio of above-mentioned joint even surface formation portion is designated as A, the expansion ratio of above-mentioned general portion is designated as under the situation of B, is adjusted into the scope of B/A=1.01～2.5.
In addition, between general portion 11 and joint even surface formation portion 12, form the slot part 18 of surface (back side) depression of 10 recessed sides from the arch.
In addition, the foam molded product 105 of present embodiment is as shown in the drawing, and part relative with slot part 18 on the surface of arch 10 is provided with decorative thread 19.Thus, suppose also can make out of question in appearance by decorative thread 19 just in case produce small shrinkage cavity.
In addition, as shown in figure 14, above-mentioned arch 10 is spreading all over outer peripheral face forms the thin skin shape that foams hardly on full week epidermal area 19.
In addition, the foam molded product 105 of present embodiment is the side ornamental strip that is engaged on the car body of vehicle, and so that the two sides adhesive tape is labelled on the above-mentioned joint even surface 15, and the mode that joins to thus on the car body of the vehicle that is engaged thing constitutes.
Below, the method for making above-mentioned foam molded product 105 is described.
In the present embodiment, as shown in figure 15,, use built-in screw rod 51, and the device of the blowing agent introduction part 54 that imports blowing agent is arranged as injection apparatus 5.
In the end of above-mentioned injection apparatus 5, connect mould 605.
The mould 605 of present embodiment as shown in figure 15, but have dynamic model 61 and fixed die 62, between them, be provided with the cavity 8 that is used to form foam molded product 105.
But above-mentioned dynamic model 61 is as shown in the drawing, by main part 610, pair of right and left ejector die 612 be clipped between a pair of ejector die 612 and mobile mould 615 combinations of configuration and constituting.This ejector die 612 has the composition surfaces that form above-mentioned 2 joint even surfaces 15 and forms with cavity face 82.
Mobile mould 615 only with the lip-deep general portion 11 of arch 10 recessed sides in the face of and dispose, can advance and retreat with respect to main part 610 by not shown actuator constitutes.
So, in the present embodiment, be formed for forming the cavity 8 of foam molded product 105 by fixed die 62, mobile mould 615 and ejector die 612.
Above-mentioned ejector die 612 is as shown in the drawing, forms with cavity face 82 and boundary member mobile mould 615 forming the composition surface that engages even surface 15, is formed for forming the jut 825 of above-mentioned slot part 18.
Above-mentioned ejector die 612 also can be advanced and retreat with respect to main part 610 by not shown actuator.But as described later, it also is the parts that work when the demoulding of moulding product, keeps and main part 610 incorporate states when moulding.
Said fixing mould 62 is the mould of surperficial all cavity face 81 of being provided with corresponding arch 10 protruding sides, but but constituted mode for when the die sinking by the moving of dynamic model 61 away from this dynamic model 61, but when closing mould approaching dynamic model 61.
In addition, in the present embodiment, not shown heater is built in the mobile mould 615, always to keep heating temperature adjustment more than or equal to the mode of 50 ℃ temperature.On the other hand, the part beyond the mobile mould 615 does not heat temperature adjustment, especially always to constitute than mobile mould 615 low temperature.
When making above-mentioned foam molded product 105 with the mould 605 of above-mentioned formation and injection apparatus 5, at first, as shown in figure 15, but dynamic model 61 and fixed die 62 are cooperated and close mould, and, thereby the volume that mobile mould 615 is advanced make cavity 8 is for minimum.In addition, in the cavity 8,, be pre-charged with as precompressed and give precompressed with the air of gas by not shown approach.
In the injection apparatus 5, the limit will be as the NaHCO of blowing agent 3Importing synthetic resin material inner edge advances with its mixing and along screw rod 51.In addition, in the present embodiment, use PP, use by NaHCO in addition as the synthetic resin material 3The Na that thermal decomposition produces 2CO 3(sodium carbonate) is as sending out kernel foaming agent.
Then, when cavity 8 sprays,, the synthetic resin material that ejects is given the counter-pressure of appropriateness from injection apparatus 5 by the precompressed gas that is filled in the cavity 8.Thus, the limit forms so-called epidermal area 19 (Figure 14) at the outer surface of moulding product, and the limit is filled in the cavity 8.
Next, as shown in figure 16, after cavity 8 injected synthetic resin materials 100 fill up, as shown in figure 17, mobile mould 615 is retreated.Thus, the volume of general portion significantly increases in the cavity 8.
The mould 605 of present embodiment here as above-mentioned, forms on the composition surface with cavity face 82 and boundary member mobile mould 615, and above-mentioned jut 825 is set.So after above-mentioned mobile mould 615 retreated, jut 825 also can be realized the effect on so-called weir, suppress to be positioned at the material that engages even surface formation portion 12 and easily move to general portion 11.So, the position of foaming can be concentrated on general portion 11.
In addition, mobile mould 615 keeps than other portion temperature height.So, can make the material ratio of general portion 11 engage even surface formation portion 12 temperature height, and foaming is carried out easily.So, the position of above-mentioned foaming is concentrated.
In addition, be positioned at the material that engages even surface formation portion 12, also the part on never above-mentioned weir produces some foaming to general portion 11 release pressures, but to compare expansion ratio very low with general portion 11.
By these foaming,, obtain following structure as above-mentioned shown in Figure 14.This is configured to compare with the expansion ratio that engages even surface formation portion 12, is clipped in the expansion ratio height of the general portion 11 between this joint even surface formation portion 12.In addition, the epidermal area 19 by the thin skin shape that does not roughly foam of being configured to of arch 10 covers outer peripheral faces week entirely.
In addition, the pressure during by such foaming produces shrinkage cavity in the time of can suppressing moulding, and the appearance characteristics that obtains is also good.
In addition, possess the above-mentioned ejector die 612 that the composition surface that forms above-mentioned joint even surface 15 forms with cavity face 82 and in moulding, be maintained fixed the position.The joint even surface formation portion 12 that faces with it forms with the state of low foaming.So, engage even surface 15 and obtain so that above-mentioned composition surface is formed the state and the very smooth state that verily duplicate with the flatness of cavity face 82.So, engage at this and to paste two sides adhesive tape etc. on even surface 15 and be engaged under the situation on the car body, can obtain its zygosity fully.
Next, after moulding finished, as shown in figure 18, the die sinking but dynamic model 61 and fixed die 62 are disconnected from each other made above-mentioned ejector die 612 before main part 610 and then make foam molded product 1 demoulding simultaneously.
After this, as shown in figure 19,, when ejector die 612 is reset into original position, but dynamic model 61 and fixed die 62 are cooperated and the pass mould for the next foam molded product of moulding.Then, return the state of the Figure 15 that makes mobile mould 615 move to progressive position once more after, by carrying out above-mentioned series of formed repeatedly, the above-mentioned foam molded product 105 of moulding continuously.
As above, in the present embodiment, when suppressing bad order, can be controlled general portion 11 and engage the foam molded product 105 of the expansion ratio of even surface formation portion 12.And in this foam molded product 105, because the general portion 11 rigidity height that engage even surface 15 are arranged, shape stability is good, and has improved the flatness that engages even surface 15, so can improve adherence as mentioned above.
In addition, by existing solid product being replaced with the foam molded product 105 of present embodiment, can and reduce cost by lightweight and minimizing use material.
(embodiment 6)
Present embodiment is the mould 605 that replaces among the embodiment 1, uses the example of the mould 706 that some structural differences are arranged with it.
The mould 706 that uses in the present embodiment as Figure 20～shown in Figure 23, but has dynamic model 71 and fixed die 72, is provided with the cavity 8 that is used to form foam molded product between this.
But above-mentioned dynamic model 71 as shown in figure 20, and main part 710 and pair of right and left ejector die 712 are arranged.This ejector die 712 has the composition surfaces that form above-mentioned 2 joint even surfaces 15 to form with cavity face 82.And, in the central authorities of main part 710, form the outstanding mobile mould 715 of mode only to face with general portion 11.That is, in the present embodiment, constituted mode is the main part 710 whole advance and retreat that contain mobile mould 715, to realize moving of mobile mould 715.
Above-mentioned ejector die 712 is as shown in the drawing, and is identical with ejector die 612 among the embodiment 1.And, form on the composition surface that form to engage even surface 15 with cavity face 82 and boundary member mobile mould 715, be formed for forming the jut 825 of above-mentioned slot part 18.
Other structure on the mould 706 is identical with the situation of embodiment 1.
When making above-mentioned foam molded product 1 with the mould 705 of above-mentioned formation and injection apparatus 5, at first, as shown in figure 20, but dynamic model 71 and fixed die 72 are cooperated and close mould, and, thereby the volume that mobile mould 715 is advanced make cavity 8 is for minimum.In addition, in the cavity 8,, be pre-charged with as precompressed and give precompressed with the air of gas by not shown approach.And, with embodiment 5 in the same manner, filled synthetic resin material 100 in cavity 8.
After this, as shown in figure 21, keep ejector die 712 and the main part 710 that comprises mobile mould 715 is retreated.Thus, the volume of general portion significantly increases in the cavity 8.The mould 706 of present embodiment here as above-mentioned, forms on the composition surface with cavity face 82 and boundary member mobile mould 715, and above-mentioned jut 825 also is set.So after above-mentioned mobile mould 715 retreated, jut 825 can be realized the effect on so-called weir, suppress to be positioned at the material that engages even surface formation portion 12 and easily move to general portion 11.So, the position of foaming can be concentrated on general portion 11.
In addition, mobile mould 715 keeps the temperature higher than other parts.So, identical with the situation of embodiment 1, can make the material ratio of general portion 11 engage even surface formation portion 12 temperature height, and foaming is carried out easily.So, the position of above-mentioned foaming is concentrated.
Next, after moulding finished, as shown in figure 22, the die sinking but dynamic model 71 and fixed die 72 are disconnected from each other made above-mentioned ejector die 712 before main part 710 and then make foam molded product 1 demoulding simultaneously.
After this, as shown in figure 23,, when ejector die 712 is reset into original position, but dynamic model 71 and fixed die 72 are cooperated and the pass mould for the next foam molded product of moulding.Then, turn back to the state of Figure 20 once more after, by carrying out above-mentioned series of formed repeatedly, the above-mentioned foam molded product 105 of moulding continuously.
Other obtains effect similarly to Example 5.
(embodiment 7)
With regard to the manufacture method of the related foam molded product of embodiments of the invention, use Figure 24～Figure 28 to describe.
The foam molded product of making in the present embodiment 1, shown in Figure 1 as described above, be identical with the situation of embodiment 1, have and the foam molded product that is engaged the joint even surface 15 that thing engages.In this foam molded product, compare with the expansion ratio that engages even surface formation portion 12, with the expansion ratio height of the general portion 11 that engages even surface formation portion 12 adjacent parts, this joint even surface formation portion 12 is the parts with the zone after the above-mentioned joint even surface 15 approximate vertical projections.In addition, the foam molded product 1 of present embodiment has section shape and is roughly arc arch 10, and above-mentioned joint even surface 15 is arranged at the lip-deep two ends of arch 10 recessed sides.
As concrete expansion ratio, the expansion ratio of above-mentioned joint even surface formation portion is designated as A, the expansion ratio of above-mentioned general portion is designated as under the situation of B, be adjusted into the scope of B/A=1.01～2.5.
In addition, as shown in Figure 1, above-mentioned arch 10 is spreading all over outer peripheral face forms the thin skin shape that foams hardly on full week epidermal area 19.
In addition, the foam molded product 1 of present embodiment is the side ornamental strip that is engaged on the car body of vehicle, and so that the two sides adhesive tape is labelled on the above-mentioned joint even surface 15, and the mode that joins to thus on the car body of the vehicle that is engaged thing constitutes.
Below, the method for making above-mentioned foam molded product 1 is described.
In the present embodiment, as shown in figure 24,, use built-in screw rod 51, and the device of the blowing agent introduction part 54 that imports blowing agent is arranged as injection apparatus 5.
In the end of above-mentioned injection apparatus 5, connect mould 607.
The mould 607 of present embodiment as shown in figure 24, but dynamic model 61 and fixed die 62 are arranged, between them, be provided with the cavity 8 that is used to form foam molded product 1.
But above-mentioned dynamic model 61 is as shown in the drawing, by main part 610, pair of right and left ejector die 612 be clipped between a pair of ejector die 612 and mobile mould 615 combinations of configuration and constituting.This ejector die 612 has the composition surfaces that form above-mentioned 2 joint even surfaces 15 and forms with cavity face 82.
Mobile mould 615 only engage with arch 10 recessed sides lip-deep even surface formation portion 12 in the face of and dispose, can advance and retreat with respect to main part 610 by not shown actuator constitutes.
So, in the present embodiment, be formed for forming the cavity 8 of foam molded product 1 by fixed die 62, mobile mould 615 and ejector die 612.
Above-mentioned ejector die 612 also can be advanced and retreat with respect to main part 610 by not shown actuator.But as described later, it also is the parts that work when the demoulding of moulding product, keeps and main part 610 incorporate states when moulding.
Said fixing mould 62 is the mould of surperficial all cavity face 81 of being provided with corresponding arch 10 protruding sides, but but constituted mode for when the die sinking by the moving of dynamic model 61 away from this dynamic model 61, but when closing mould approaching dynamic model 61.
In addition, in the present embodiment, not shown heater is built in the mobile mould 615, always to keep heating temperature adjustment more than or equal to the mode of 50 ℃ temperature.On the other hand, the part beyond the mobile mould 615 does not heat temperature adjustment especially, with always low and constitute than mobile mould 615 temperature.And, in the sliding friction surface of mobile mould 615 and ejector die 612, on the surface of mobile mould 615 sides, the heat-insulating material 69 that is sticked and constitutes by phenolic resins.
When making above-mentioned foam molded product 1 with the mould 607 of above-mentioned formation and injection apparatus 5, at first, as shown in figure 24, but dynamic model 61 and fixed die 62 are cooperated and close mould, and, thereby the volume that mobile mould 615 is advanced make cavity 8 is for minimum.In addition, in the cavity 8,, be pre-charged with as precompressed and give precompressed with the air of gas by not shown approach.
In the injection apparatus 5, the limit will be as the NaHCO of blowing agent 3Importing synthetic resin material inner edge advances with its mixing and along screw rod 51.In addition, in the present embodiment, use PP, use by NaHCO in addition as the synthetic resin material 3The Na that thermal decomposition produces 2CO 3(sodium carbonate) is as sending out kernel foaming agent.
Then, when cavity 8 sprays,, the synthetic resin material that ejects is given the counter-pressure of appropriateness from injection apparatus 5 by the precompressed gas in the cavity filling 8.Thus, the limit forms so-called epidermal area 19 (Fig. 1) on the outer surface of moulding product, and the limit is filled in the cavity 8.
Next, as shown in figure 25, after cavity 8 injected synthetic resin materials 100 fill up, as shown in figure 26, mobile mould 615 is retreated.Thus, the volume of general portion significantly increases in the cavity 8.
The mould 607 of present embodiment here, as mentioned above, employing be provided with the composition surface form with the sliding friction surface of 615 of the ejector die 612 of cavity face 82 and mobile moulds on the thermal insulation structure of the above-mentioned heat-insulating material 69 of configuration, and keep the temperature height of the temperature of mobile mould 615 than other mould parts.
So, because the material of general portion 11 becomes the state of easy foaming than the material temperature height that engages even surface formation portion 12, and the volume increase, so the concentrated area produces foaming in this general portion 11.
In addition, be positioned at the material that engages even surface formation portion 12, also produce some foaming, but to compare expansion ratio very low with general portion 11 to general portion 11 release pressures.
By this foaming, shown in Figure 1 as described above, obtain following structure, this is configured to compare with the expansion ratio that engages even surface formation portion 12, is clipped in the expansion ratio height of the general portion 11 between this joint even surface formation portion 12.In addition, arch 10 be configured to cover outer peripheral faces week entirely by the epidermal area 19 of the thin skin shape of foaming hardly.
In addition, the pressure during by means of such foaming produces shrinkage cavity in the time of can suppressing moulding, and the appearance characteristics that obtains is also good.
In addition, possess the above-mentioned ejector die 612 that the composition surface that forms above-mentioned joint even surface 15 forms with cavity face 82 and in moulding, be maintained fixed the position.Therefore, the joint even surface formation portion 12 that faces with it forms with the state of low foaming.So, engage even surface 15 and obtain so that above-mentioned composition surface is formed the state and the very smooth state that verily duplicate with the flatness of cavity face 82.So, engage at this and to paste two sides adhesive tape etc. on even surface 15 and join under the situation on the car body, can obtain its zygosity fully.
After moulding finishes, as shown in figure 27, but make dynamic model 61 and fixed die 62 mutually away from and die sinking makes above-mentioned ejector die 612 advance from main part 610 simultaneously, make the foam molded product demoulding.
After this, as shown in figure 28,, when ejector die 612 is reset into original position, but dynamic model 61 and fixed die 62 are cooperated and the pass mould for the next foam molded product of moulding.Then, return the state of the Figure 24 that makes mobile mould 615 move to progressive position once more after, by carrying out above-mentioned series of formed repeatedly, the above-mentioned foam molded product 1 of moulding continuously.
As above, in the present embodiment, when suppressing bad order, can be controlled general portion 11 and engage the foam molded product 1 of the expansion ratio of even surface formation portion 12.And in this foam molded product 1, because the general portion 11 rigidity height that engage even surface 15 are arranged, shape stability is good, and has improved the flatness that engages even surface 15, so can be as above-mentioned raising adherence.
In addition, by existing solid product being replaced with the foam molded product 1 of present embodiment, can and reduce cost by lightweight and minimizing use material.
(embodiment 8)
Present embodiment is the mould 607 that replaces among the embodiment 7, uses the example of the mould 708 that some structural differences are arranged with it.
The mould 708 that uses in the present embodiment as Figure 29～shown in Figure 32, but has dynamic model 71 and fixed die 72, is provided with the cavity 8 that is used to form foam molded product between the demoulding.
But above-mentioned dynamic model 71 as shown in figure 29, and main part 710 and pair of right and left ejector die 712 are arranged, and this ejector die 712 has the composition surfaces that form above-mentioned 2 joint even surfaces 15 to form with cavity face 82.And, in the central authorities of main part 710, form the outstanding mobile mould 715 of mode only to face with general portion 11.That is, in the present embodiment, constituted mode is the main part 710 whole advance and retreat that contain mobile mould 715, to realize moving of mobile mould 715.
Above-mentioned ejector die 712 as shown in figure 29, and is identical with ejector die 612 among the embodiment 1.
In addition, in the present embodiment, not shown heater is built in the mobile mould 715, always to keep heating temperature adjustment more than or equal to the mode of 50 ℃ temperature.On the other hand, the part beyond the mobile mould 715 does not heat temperature adjustment especially, with always low and constitute than mobile mould 715 temperature.And, in the sliding friction surface of mobile mould 715 and ejector die 712, on the surface of mobile mould 715 sides, the heat-insulating material 69 that is sticked and constitutes by phenolic resins.
Other structure on the mould 708 is identical with embodiment 1.
When making above-mentioned foam molded product 1 with the mould 708 of above-mentioned formation and injection apparatus 5, at first, as shown in figure 29, but dynamic model 71 and fixed die 72 cooperated and close mould, and, make before the main part 710 that comprises mobile mould 715 so the volume that makes cavity 8 for minimum.In addition, in the cavity 8,, be pre-charged with as precompressed and give precompressed with the air of gas by not shown approach.Then, with embodiment 1 in the same manner, filled synthetic resin material 100 in cavity 8.
After this, as shown in figure 30, keep ejector die 712 and the main part 710 that comprises mobile mould 715 is retreated.Thus, the volume of general portion significantly increases on the cavity 8.Here in the mould 708 of present embodiment, also as above-mentioned, employing be provided with the composition surface form with the sliding friction surface of 715 of the ejector die 712 of cavity face 82 and mobile moulds on the thermal insulation structure of the above-mentioned heat-insulating material 69 of configuration, and keep the temperature height of the temperature of mobile mould 715 than other mould parts.
So, because the material of general portion 11 becomes the state of easy foaming than the material temperature height that engages even surface formation portion 12, and the volume increase, so the concentrated area produces foaming in this general portion 11.
In addition, be positioned at the material that engages even surface formation portion 12, also produce some foaming, but to compare expansion ratio very low with general portion 11 to general portion 11 release pressures.
Next; After moulding finishes, as shown in figure 31, the die sinking but dynamic model 71 and fixed die 72 are disconnected from each other, make simultaneously above-mentioned ejector die 712 from main part 710 significantly before so that make foam molded product 1 demoulding.
After this, shown in figure 32,, when ejector die 712 is reset into original position, but dynamic model 71 and fixed die 72 are cooperated and the pass mould for the next foam molded product of moulding.Then, return the state of Figure 29 once more after, by carrying out above-mentioned series of formed repeatedly, the above-mentioned foam molded product 1 of moulding continuously.
Other suspiciously obtain the effect identical with embodiment 7.
In addition, also can make the foam molded product 2,3 of record in the above embodiments 3,4 by using the method same with the foregoing description 7,8.
(embodiment 9)
With regard to embodiments of the invention related foam molded product and manufacture method thereof, use Figure 33～Figure 38 to describe.
The foam molded product 109 of present embodiment as shown in figure 33, it is roughly arc arch 10 that section shape is arranged, and will be engaged the lip-deep two ends that joint even surface 15 that thing engages is arranged at above-mentioned arch 10 recessed sides.
Engage the expansion ratio of even surface formation portion 12, and be clipped in this expansion ratio that engages the general portion 11 between the even surface formation portion 12 about equally, this joint even surface formation portion 12 is part of upwards setting up from the joint even surface 15 at 10 two ends, above-mentioned arch.
As concrete expansion ratio, the expansion ratio of above-mentioned joint even surface formation portion is designated as A, the expansion ratio of above-mentioned general portion is designated as under the situation of B, be adjusted into the scope of B/A=0.90～1.10.
In addition, as shown in figure 33, above-mentioned arch 10 is spreading all over outer peripheral face forms the thin skin shape that foams hardly on full week epidermal area 19.
In addition, the foam molded product 1 of present embodiment is the side ornamental strip that is engaged on the car body of vehicle, and so that the two sides adhesive tape is labelled on the above-mentioned joint even surface 15, and the mode that joins to thus on the car body of the vehicle that is engaged thing constitutes.
Below, the method for making above-mentioned foam molded product 1 is described.
In the present embodiment, as shown in figure 34,, use built-in screw rod 51, and the device of the blowing agent introduction part 54 that imports blowing agent is arranged as injection apparatus 5.
In the end of above-mentioned injection apparatus 5, connect mould 609.
The mould 609 of present embodiment as shown in figure 34, but have dynamic model 61 and fixed die 62, between them, be provided with the cavity 8 that is used to form foam molded product 109.
But above-mentioned dynamic model 61 is as shown in the drawing, by main part 610, pair of right and left ejector die 612 be clipped between a pair of ejector die 612 and mobile mould 615 combinations of configuration and constituting.This ejector die 612 has the composition surfaces that form above-mentioned 2 joint even surfaces 15 and forms with cavity face 82.
Mobile mould 615 only with the lip-deep general portion 11 of arch 10 recessed sides in the face of and dispose, can advance and retreat with respect to main part 610 by not shown actuator constitutes.
In addition, but dynamic model 61 and fixed die 62 use that is fixed when moulding in the present embodiment all is comprised in the notion of fixed die in the 2nd invention of this specification.
Above-mentioned ejector die 612 also can be advanced and retreat with respect to main part 610 by not shown actuator.But as described later, it also is the parts that work when the demoulding of moulding product, keeps and main part 610 incorporate states when moulding.
Said fixing mould 62 is the mould of surperficial all cavity face 81 of being provided with corresponding arch 10 protruding sides, but constituted mode for relatively moving away from dynamic model 61 when the die sinking, but when closing mould approaching dynamic model 61 and relatively moving.
In addition, in the present embodiment, not shown heater is built in the ejector die 612, the composition surface is formed with the temperature maintenance of cavity face 82 always heat temperature adjustment more than or equal to the mode of 50 ℃ temperature.On the other hand, mobile mould 615 does not heat temperature adjustment especially, constitutes with cavity face 82 low temperature always to form than the composition surface.And, on the sliding friction surface of mobile mould 615 and ejector die 612, the heat-insulating material 69 that is sticked and constitutes on the surface of mobile mould 615 sides by phenolic resins.
When making above-mentioned foam molded product 109 with the mould 609 of above-mentioned formation and injection apparatus 5, at first, as shown in figure 34, but dynamic model 61 and fixed die 62 are cooperated and close mould, and, thereby the volume that mobile mould 615 is advanced make cavity 8 is for minimum.In addition, in the cavity 8,, be pre-charged with as pressure and give precompressed with the air of gas by not shown approach.
In the injection apparatus 5, the limit will be as the NaHCO of blowing agent 3Importing synthetic resin material inner edge advances with its mixing and along screw rod 51.In addition, in the present embodiment, use PP, use by NaHCO in addition as the synthetic resin material 3The Na that thermal decomposition produces 2CO 3(sodium carbonate) is as sending out kernel foaming agent.
Then, when cavity 8 sprays,, the synthetic resin material that ejects is given the counter-pressure of appropriateness from injection apparatus 5 by the precompressed gas in the cavity filling 8.Thus, the limit forms so-called epidermal area 19 (Figure 33) on the outer surface of moulding product, and the limit is filled in the cavity 8.
Next, as shown in figure 35, after cavity 8 injected synthetic resin materials 100 fill up, as shown in figure 36, mobile mould 615 is retreated.Thus, the volume of general portion 11 significantly increases in the cavity 8, and this part begins foaming.
The mould 609 of present embodiment here, as mentioned above, employing be provided with the composition surface form with the sliding friction surface of 615 of the ejector die 612 of cavity face 82 and mobile moulds on the thermal insulation structure of the above-mentioned heat-insulating material 69 of configuration, so keep making the composition surface to form with the temperature of cavity face 82 temperature height than other mobile mould 615 grades.
So concerning the foaming easness of the material that contacts with mould itself, the material of the joint even surface formation portion 12 of the condition of high temperature foams easily than the material of general portion 11.So, being accompanied by material and flowing, the foaming that engages even surface formation portion 12 is also promoted simultaneously.
So, finally, increase the foaming cause and the foaming easness of the foaming that caused by the condition of high temperature combines by volume, and obtain whole foamed state on a rough average.
By these foaming, shown in Figure 33 as described above, being configured to of obtaining engages the expansion ratio of even surface formation portion 12 and is clipped in the roughly the same structure of expansion ratio that engages the general portion 11 between the even surface formation portion 12.In addition, arch 10 be configured to cover outer peripheral faces week entirely by the epidermal area 19 of the thin skin shape of foaming hardly.
In addition, the pressure during by such foaming produces shrinkage cavity in the time of can suppressing moulding, and the appearance characteristics that obtains is also good.
In addition, possess the above-mentioned ejector die 612 that the composition surface that forms above-mentioned joint even surface 15 forms with cavity face 82 and in moulding, be maintained fixed the position.So, engage even surface 15 and obtain so that above-mentioned composition surface is formed the state and the very smooth state that verily duplicate with the flatness of cavity face 82.So, engage at this and to paste two sides adhesive tape etc. on even surface 15 and join under the situation on the car body, can obtain its zygosity fully.
After moulding finished, as shown in figure 37, the die sinking but dynamic model 61 and fixed die 62 are disconnected from each other made above-mentioned ejector die 612 before main part 610 and then make foam molded product 1 demoulding simultaneously.
After this, as shown in figure 38,, when ejector die 612 is reset into original position, but dynamic model 61 and fixed die 62 are cooperated and the pass mould for the next foam molded product of moulding.Then, return the state of the Figure 34 that makes mobile mould 615 move to progressive position once more after, by carrying out above-mentioned series of formed repeatedly, the above-mentioned foam molded product 109 of moulding continuously.
As above, in the present embodiment, the bad order that can be inhibited, and controlled general portion 11 and the expansion ratio foam molded product 109 about equally that engages even surface formation portion 12.And, in this foam molded product 109, because improved the flatness that engages even surface 15, so can be as above-mentioned raising adherence.
In addition, by existing solid product being replaced with the foam molded product 109 of present embodiment, can and reduce cost by lightweight and minimizing use material.
(embodiment 10)
Present embodiment is the mould 609 that replaces among the embodiment 9, uses the example of the mould 709 that some structural differences are arranged with it.
The mould 709 that uses in the present embodiment as Figure 39～shown in Figure 42, but has dynamic model 71 and fixed die 72, is provided with the cavity 8 that is used to form arch 10 between them.
But shown in above-mentioned dynamic model 71 these figure, main part 710 and pair of right and left ejector die 712 are arranged, this ejector die 712 has the composition surfaces that form above-mentioned 2 joint even surfaces 15 to form with cavity face 82.And, in the central authorities of main part 710, form the outstanding mobile mould 715 of mode only to face with general portion 11.That is, in the present embodiment, constituted mode is the main part 710 whole advance and retreat that contain mobile mould 715, to realize moving of mobile mould 715.
Not shown heater is built in the above-mentioned ejector die 712, the composition surface is formed with the temperature maintenance of cavity face 82 always heat temperature adjustment more than or equal to the mode of 50 ℃ temperature.On the other hand, mobile mould 715 does not heat temperature adjustment especially, constitutes with cavity face 82 low temperature always to form than the composition surface.And, on the sliding friction surface of mobile mould 715 and ejector die 712, the heat-insulating material 69 that is sticked and constitutes on the surface of mobile mould 715 sides by phenolic resins.
Other structures of mould 709 are identical with the situation of embodiment 1.
When making above-mentioned foam molded product 1 with the mould 709 of above-mentioned formation and injection apparatus 5, at first, as shown in figure 39, but dynamic model 71 and fixed die 72 are cooperated and the pass mould, and, thereby the volume that the main part 710 that comprises mobile mould 715 is advanced make cavity 8 is for minimum.In addition, in the cavity 8,, be pre-charged with as pressure and give precompressed with the air of gas by not shown approach.Then, with embodiment 1 in the same manner, filled synthetic resin material 100 in cavity 8.
After this, as shown in figure 40, keep ejector die 712 and the main part 710 that comprises mobile mould 715 is retreated.Thus, the volume of general portion 11 significantly increases in the cavity 8, and this part begins foaming.Here in the mould 709 of present embodiment, as mentioned above, employing be provided with the composition surface form with the sliding friction surface of 715 of the ejector die 712 of cavity face 82 and mobile moulds on the thermal insulation structure of the above-mentioned heat-insulating material 69 of configuration, form with the temperature of cavity face 82 temperature height to keep the composition surface than other mobile mould 715 grades.
So concerning the foaming easness of the material that contacts with mould itself, the material of the joint even surface formation portion 12 of the condition of high temperature foams easily than the material of general portion 11.So, being accompanied by material and flowing, the foaming that engages even surface formation portion 12 is also promoted simultaneously.
So, finally, increase the foaming cause and the foaming easness of the foaming that caused by the condition of high temperature combines by volume, and obtain whole foamed state on a rough average.
Next, after moulding finished, as shown in figure 41, the die sinking but dynamic model 71 and fixed die 72 are disconnected from each other made above-mentioned ejector die 712 before main part 710 and then make foam molded product 109 demouldings simultaneously.
After this, as shown in figure 42,, when ejector die 712 is reset into original position, but dynamic model 71 and fixed die 72 are cooperated and the pass mould for the next foam molded product of moulding.Then, return the state of Figure 39 once more after, by carrying out above-mentioned series of formed repeatedly, the above-mentioned foam molded product 109 of moulding continuously.
Other can obtain the same effect with embodiment 9.
(embodiment 11)
In the present embodiment, represented to make the variation of shape change of the foam molded product of embodiment 9.
The foam molded product 202 of present embodiment as shown in figure 43, have arch 20 and with the ornamental portion 28 of one end adjacency.
The arch 20 of this foam molded product 202, two ends have and are engaged the joint even surface 25 that thing engages on the surface of above-mentioned arch 20 recessed sides.And, the expansion ratio that engages the expansion ratio of even surface formation portion 22 and be clipped in the general portion 21 between this joint even surface formation portion 22 about equally, the part that the joint even surface 25 that this joint even surface formation portion 22 is 20 two ends from the arch is upwards set up.
When making foam molded product 202, use to have the cavity that is used for moulding arch 20 and be used for the mould (diagram omit) of the ornamental portion of moulding ornamental portion 28 with cavity, its cavity is partly carried out the same operation with embodiment 9.Thus, can similarly control general portion and the expansion ratio that engages even surface formation portion with the situation of embodiment 9.Other are identical with embodiment 9.
(embodiment 12)
Also represented to make the variation of shape change of the foam molded product of embodiment 9 in the present embodiment.
The foam molded product 302 of present embodiment has the 310, the 2nd arch 320, the 1st arch and and the ornamental portion 38 of adjacency between them as shown in figure 44.
The 1st arch 310 of this foam molded product 302 at the lip-deep two ends of the 1st arch 310 recessed sides, has and is engaged the joint even surface 351,352 that thing engages.And the expansion ratio that engages the expansion ratio of even surface formation portion 312 and be clipped in the general portion 311 between this joint even surface formation portion 312 about equally.This joint even surface formation portion 312 is parts of upwards setting up from the joint even surface 351,352 at 310 two ends, the 1st arch.
Similarly, the 2nd arch 320 is at the lip-deep two ends of the 2nd arch 320 recessed sides, has and is engaged the joint even surface 353,354 that thing engages.And, the expansion ratio that engages the expansion ratio of even surface formation portion 322 and be clipped in the general portion 321 between this joint even surface formation portion 322 about equally, this joint even surface formation portion 322 is parts of upwards setting up from the joint even surface 351,352 at 320 two ends, the 2nd arch.
When making foam molded product 302, use is with bed die (diagram is omitted), its 2 cavitys are partly carried out similarly to Example 9 operation, and this mould is useful on 2 cavitys of the 1st arch 310 of moulding respectively and the 2nd arch 320 and is used for the ornamental portion cavity of moulding ornamental portion 38.Thus, can similarly control general portion and the expansion ratio that engages even surface formation portion with the situation of embodiment 9.
Other are identical with embodiment 9.

Claims (23)

1. foam molded product has and is engaged the joint even surface that thing engages, it is characterized in that,
The expansion ratio of general portion is than the expansion ratio height of the joint even surface formation portion that is provided with above-mentioned joint even surface.
2. foam molded product as claimed in claim 1 is characterized in that,
Above-mentioned foam molded product is provided with above-mentioned joint even surface formation portion in the one or both ends of above-mentioned general portion.
3. foam molded product as claimed in claim 1 is characterized in that,
Above-mentioned foam molded product has section shape and is roughly arc arch, and above-mentioned joint even surface is arranged at the two ends on the surface of the recessed side in above-mentioned arch.
4. foam molded product as claimed in claim 1 is characterized in that,
The expansion ratio of above-mentioned composition surface formation portion is designated as A, and the expansion ratio of above-mentioned general portion is designated as under the situation of B, B/A=1.01～2.5.
5. foam molded product as claimed in claim 1 is characterized in that,
Between above-mentioned joint even surface formation portion and above-mentioned general portion, form slot part, this slot part from the surface depression that is provided with the above-mentioned surperficial homonymy that engages even surface.
6. as each described foam molded product of claim 1 to 5, it is characterized in that,
Above-mentioned foam molded product is the side ornamental strip that is engaged on the car body of vehicle.
7. the manufacture method of a foam molded product, this foam molded product has and is engaged the joint even surface that thing engages, and the expansion ratio of general portion is than the expansion ratio height of the joint even surface formation portion that is provided with this joint even surface,
It is characterized in that,
Use is with bed die, this mould have at least fixed die with this fixed die is moved mould relative to advance and retreat, possesses the cavity that is used to form above-mentioned foam molded product, with with this cavity in the mode that forms with the cavity face adjacency of the above-mentioned composition surface that engages even surface of formation dispose above-mentioned mobile mould, make this move die face to above-mentioned general portion
In above-mentioned cavity, spray and to contain the synthetic resin material of blowing agent or to contain the synthetic resin material of foaming with gas, then, above-mentioned mobile mould is retreated and increase the volume of above-mentioned general portion, thereby impel foaming.
8. the manufacture method of foam molded product as claimed in claim 7 is characterized in that,
Above-mentioned mould has that but be provided with can be relative to the above-mentioned dynamic model that moves mould of advancing and retreat, and should can advance and retreat relatively with the said fixing mould by dynamic model but be provided with.
9. the manufacture method of foam molded product as claimed in claim 7 is characterized in that,
Above-mentioned mould has the ejector die that is used for the foam molded product demoulding after the moulding, above-mentioned composition surface is set on the end face of this ejector die forms and use cavity face.
10. the manufacture method of foam molded product as claimed in claim 7 is characterized in that,
Above-mentioned foam molded product has section shape and is arc arch roughly, and above-mentioned joint even surface is arranged on the two ends on the surface of the recessed side in above-mentioned arch, and above-mentioned mobile mould disposes to be formed the mode that is clipped in the middle with cavity face by 2 above-mentioned composition surfaces.
11. the manufacture method of foam molded product as claimed in claim 7 is characterized in that,
In above-mentioned cavity, be pre-charged with precompressed and give precompressed with gas, carry out above-mentioned injection then.
12. the manufacture method of foam molded product as claimed in claim 7 is characterized in that,
As above-mentioned foam molded product, between above-mentioned joint even surface formation portion and above-mentioned general portion, form slot part, this slot part from the surface depression that is provided with the above-mentioned surperficial homonymy that engages even surface,
Use is with bed die, and this mould forms on above-mentioned composition surface with cavity face and boundary member above-mentioned mobile mould, is formed for forming the jut of above-mentioned slot part.
13. the manufacture method of foam molded product as claimed in claim 7 is characterized in that,
Above-mentioned mobile mould is maintained to form than above-mentioned composition surface at least uses cavity face high temperature.
14. the manufacture method of foam molded product as claimed in claim 7 is characterized in that,
At above-mentioned mobile mould with it between the mould part of adjacency, set in advance and be used to reduce the thermal insulation structure that heat is between the two transmitted,
Under the state that above-mentioned mobile mould is maintained than other part high temperature, in above-mentioned cavity, spray and contain the synthetic resin material of blowing agent or contain the synthetic resin material of foaming with gas, then, above-mentioned mobile mould is retreated and increase the volume of above-mentioned general portion, thereby impel foaming.
15. a foam molded product has and is engaged the joint even surface that thing engages, it is characterized in that,
Be provided with above-mentioned joint even surface joint even surface formation portion expansion ratio and general portion expansion ratio about equally.
16. foam molded product as claimed in claim 15 is characterized in that,
Above-mentioned foam molded product is provided with above-mentioned joint even surface formation portion in the one or both ends of above-mentioned general portion.
17. foam molded product as claimed in claim 15 is characterized in that,
Above-mentioned foam molded product has section shape and is roughly arc arch, and above-mentioned joint even surface is arranged on the two ends on the surface of the recessed side in above-mentioned arch.
18. foam molded product as claimed in claim 15 is characterized in that,
The expansion ratio of above-mentioned composition surface formation portion is designated as A, and the expansion ratio of above-mentioned general portion is designated as under the situation of B, B/A=0.90～1.10.
19. foam molded product as claimed in claim 15 is characterized in that,
Above-mentioned foam molded product is the side ornamental strip that is engaged with on the car body of vehicle.
20. the manufacture method of a foam molded product, this foam molded product have and are engaged the joint even surface that thing engages, be provided with this joint even surface joint even surface formation portion expansion ratio and general portion expansion ratio about equally,
It is characterized in that,
Use is with bed die, this mould has fixed die and reaches the move mould of this fixed die relative to advance and retreat, possesses the cavity that is used to form above-mentioned foam molded product, form the mode that is clipped in the middle with cavity face with the composition surface that is formed above-mentioned joint even surface in this cavity and dispose above-mentioned mobile mould, make this move die face to above-mentioned general portion
At above-mentioned mobile mould with it between the mould part of adjacency, be provided for reducing the thermal insulation structure that heat is between the two transmitted,
The formation of above-mentioned composition surface is being maintained than above-mentioned mobile mould high temperature with cavity face, and this mobile mould is maintained than under the state of above-mentioned composition surface formation with cavity face low temperature, in above-mentioned cavity, spray and contain the synthetic resin material of blowing agent or contain the synthetic resin material of foaming with gas, then, make this move that mould retreats and the volume that increases above-mentioned general portion, thereby impel foaming.
21. the manufacture method of foam molded product as claimed in claim 20 is characterized in that,
Above-mentioned mould has that but be provided with can be relative to the above-mentioned dynamic model that moves mould of advancing and retreat, and should can advance and retreat relatively with the said fixing mould by dynamic model but be provided with.
22. the manufacture method of foam molded product as claimed in claim 20 is characterized in that,
Above-mentioned mould has the ejector die that is used for the foam molded product demoulding after the moulding, above-mentioned composition surface is set on the end face of this ejector die forms and use cavity face.
23. the manufacture method of foam molded product as claimed in claim 20 is characterized in that,
In above-mentioned cavity, be pre-charged with precompressed and give precompressed with gas, carry out above-mentioned injection then.
CNA2005100596970A 2004-03-31 2005-03-31 Foaming-formed product and method for producing same Pending CN1676299A (en)

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JP2004102182 2004-03-31
JP2004102182 2004-03-31
JP2004144088A JP4412053B2 (en) 2004-05-13 2004-05-13 Manufacturing method of foam molded product
JP2004144089A JP2005324424A (en) 2004-05-13 2004-05-13 Foamed molded product and its manufacturing method
JP2004144089 2004-05-13
JP2004144088 2004-05-13
JP2004144087 2004-05-13
JP2004144087A JP4311275B2 (en) 2004-05-13 2004-05-13 Foam molded product and method for producing the same
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JP2004286292A JP4222281B2 (en) 2004-03-31 2004-09-30 Manufacturing method of foam molded article

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CN102240896A (en) * 2010-05-12 2011-11-16 南通超达机械科技有限公司 Processing technology of parting face of foaming mould for automobile interiors
CN101486239B (en) * 2008-11-14 2012-01-04 联塑(杭州)机械有限公司 Method for manufacturing locomotive component and product produced thereby
CN111605117A (en) * 2019-12-23 2020-09-01 东莞市松裕塑胶皮具制品有限公司 Process for molding E-TPU mobile phone protective shell through secondary compression molding

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101486239B (en) * 2008-11-14 2012-01-04 联塑(杭州)机械有限公司 Method for manufacturing locomotive component and product produced thereby
CN102240896A (en) * 2010-05-12 2011-11-16 南通超达机械科技有限公司 Processing technology of parting face of foaming mould for automobile interiors
CN111605117A (en) * 2019-12-23 2020-09-01 东莞市松裕塑胶皮具制品有限公司 Process for molding E-TPU mobile phone protective shell through secondary compression molding

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