CN107322861A - A kind of automobile rear side mat structure and its forming method - Google Patents
A kind of automobile rear side mat structure and its forming method Download PDFInfo
- Publication number
- CN107322861A CN107322861A CN201710525151.2A CN201710525151A CN107322861A CN 107322861 A CN107322861 A CN 107322861A CN 201710525151 A CN201710525151 A CN 201710525151A CN 107322861 A CN107322861 A CN 107322861A
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- Prior art keywords
- epp
- density
- skeletons
- foaming
- rear side
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005187 foaming Methods 0.000 claims abstract description 34
- 239000004814 polyurethane Substances 0.000 claims abstract description 27
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 15
- 229920002635 polyurethane Polymers 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims description 15
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 3
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 1
- 238000010030 laminating Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002513 isocyanates Chemical group 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/0407—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by regulating the temperature of the mould or parts thereof, e.g. cold mould walls inhibiting foaming of an outer layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/0415—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by regulating the pressure of the material during or after filling of the mould, e.g. by local venting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/1285—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being foamed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
- B60N2/7023—Coach-like constructions
- B60N2/7035—Cushions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of automobile rear side mat structure and its forming method, described automobile rear side mat structure is made up of following steps：(1) first injection buckle is embedded in EPP foaming moulds, then toward being stripped in die cavity after injection high density EPP and low-density EPP, steam molding, water cooling, obtains EPP skeletons；(2) the EPP skeletons of forming are embedded in PU foaming moulds again, inject polyurethane group material, foamed, curing forms the surface formation being attached on EPP skeletons from the PU foaming layers of skinning cortex, that is, obtains automobile rear side mat structure.Compared with prior art, the present invention uses EPP skeletons and polyurethane monolithic molding, and surface need not be coated, and cancels the assembly process of part, improves overall intensity, stability of quality etc..
Description
Technical field
The present invention relates to auto parts and components manufacture, more particularly, to a kind of automobile rear side mat structure and its forming method.
Background technology
The structure of the automobile rear side pad of prior art is：Agglomeration urethane soft formation above skeleton is molded, then coats epidermis.Note
Metal buckle is installed on modeling skeleton, using manually the polyurethane soft formation after shaping is attached on injection skeleton, then using cutting,
The epidermis sewed is coated on above, is reused rifle and is ordered in injection.Weight weight, Surface coating difficulty is big, and molding procedure is more,
Cost is high.
Chinese patent ZL201621356495.2 discloses a kind of back seat cushion skeleton of automobile 60%, including front-axle beam,
Curb girder and the back rest, by round steel pipe, integrally bending is formed front-axle beam with curb girder, and the back rest is strip rectangular steel tube, it is characterised in that：Afterwards
Installation foot is provided with below beam, the installation foot includes the support for being close to be fixed on the installation portion of back rest lower surface and tiltedly stretch out
Portion, supporting part is provided with reinforcing plate, and reinforcing plate includes the butting section for being fixed on the fixed part of abutment surfaces and tilting obliquely,
Butting section has the abutment face parallel with surface after the back rest, and abutment face is close to surface after the back rest.Although above-mentioned cushion skeleton tool
There is higher mechanical strength, but shock-absorbing capacity is poor, comfort level is not high.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of automobile rear side pad
Structure and its forming method.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of automobile rear side mat structure, including EPP skeletons and PU foaming layers on EPP skeletons are combined, in EPP skeletons
Inside also be embedded with the injection buckle that same vehicle body is installed, the surface of described PU foaming layers be also formed with after foaming curing from tying
Cortex；
Described EPP skeletons are the dual density construction being made up of high density EPP and low-density EPP, wherein, on EPP skeletons
On with the part that vehicle body is fitted be the EPP skeleton high-density regions that are made using high density EPP, remainder is uses low-density
The EPP skeleton density regions that EPP is made.
Described high density EPP density is 80-100kg/m3, low-density EPP density is 30-40kg/m3.Use height
Metal or moulding are cancelled in the mainly consideration of density, play snap action.The PU structures of part are replaced using low-density, mainly
It is the shock-absorbing capacity and sound insulation value when playing lifting side crash.Reach the simplification of overall optimum structure and assembling.
The forming method of automobile rear side mat structure, comprises the following steps：
(1) first injection buckle is embedded in EPP foaming moulds, then toward injection high density EPP and low-density in die cavity
It is stripped after EPP, steam molding, water cooling, obtains EPP skeletons；
(2) the EPP skeletons of forming are embedded in PU foaming moulds again, inject polyurethane group material, foamed, curing, shape
The PU foaming layers from skinning cortex are formed into the surface being attached on EPP skeletons, that is, obtain automobile rear side mat structure.
In step (1)：High density EPP and low-density EPP injection technology is：First by high density EPP raw materials and low-density
EPP raw materials are injected in two precompressed tanks, after the completion of injecting compressed air precompressed, are connected on two material cylinders of foaming machine, are closed
After mould, while high density EPP and low-density EPP raw materials are injected into the die cavity of EPP foaming moulds and shaping is controlled, wherein,
The forming temperature of high density EPP raw materials is controlled at 135 DEG C -145 DEG C, and steam pressure is set in 4.5bar, low-density EPP raw materials
Forming temperature is controlled at 125 DEG C -135 DEG C, and steam pressure is set in 4bar.
In step (2)：Polyurethane group material is made up of isocyanates group material and PPG；Isocyanates group material and polyethers
Polyalcohol uses conventional commercial product.
Foaming curing concrete technology condition be：The temperature on PU foaming moulds surface is 40-65 DEG C, and the curing time is 30-
40s。
Compared with prior art, the present invention has advantages below：
(1) the handwork processes such as assembling, sewing, burden are cancelled.
(2) integrated formed structure, improves overall intensity, the stability of quality.
(3) pts wt is reduced.
(4) part process time and cost are effectively reduced.
(5) effectively part own material cost is processed in reduction.
(6) injection skeleton is replaced using EPP, lifts the comfortableness of passenger.Strengthen buffer capacity during side crash.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
In figure, 1-EPP skeletons, 11-EPP skeleton density regions, 12-EPP skeleton high-density regions, 2-PU foaming layers,
3- is molded buckle.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of automobile rear side mat structure, its structure are as shown in figure 1, including EPP skeletons 1 and combination on EPP skeletons 1
PU foaming layers 2, are also embedded with the injection buckle 3 that same vehicle body is installed in EPP skeletons 1, the surface of described PU foaming layers 2 also
Be formed with after foaming curing from skinning cortex；
Described EPP skeletons 1 are the dual density construction being made up of high density EPP and low-density EPP, wherein, on EPP skeletons
On with the part that vehicle body is fitted be the EPP skeletons high-density region 12 that is made using high density EPP, remainder is using low close
The EPP skeletons density regions 11 that degree EPP is made.Described high density EPP density is 80-100kg/m3, low-density EPP's
Density is 30-40kg/m3。
The forming method of above-mentioned automobile rear side mat structure, comprises the following steps：
(1) first injection buckle 3 is embedded in EPP foaming moulds, then toward injection high density EPP and low-density in die cavity
It is stripped after EPP, steam molding, water cooling, obtains EPP skeletons；
(2) the EPP skeletons 1 of forming are embedded in PU foaming moulds again, inject polyurethane group material, foamed, curing, shape
The PU foaming layers 2 from skinning cortex are formed into the surface being attached on EPP skeletons, that is, obtain automobile rear side mat structure.
In step (1)：High density EPP and low-density EPP injection technology is：First by high density EPP raw materials and low-density
EPP raw materials are injected in two precompressed tanks, after the completion of injecting compressed air precompressed, are connected on two material cylinders of foaming machine, are closed
After mould, while high density EPP and low-density EPP raw materials are injected into the die cavity of EPP foaming moulds and shaping is controlled, wherein,
The forming temperature of high density EPP raw materials is controlled at 135 DEG C -145 DEG C, and steam pressure is set in 4.5bar, low-density EPP raw materials
Forming temperature is controlled at 125 DEG C -135 DEG C, and steam pressure is set in 4bar.
In step (2)：Polyurethane group material is made up of isocyanates group material and PPG；
Foaming curing concrete technology condition be：The temperature on PU foaming moulds surface is 40-65 DEG C, and the curing time is 30-
40s。
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using invention.
Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without passing through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
Field technique personnel are according to the announcement of the present invention, and not departing from improvement and modification that scope made all should be the present invention's
Within protection domain.
Claims (6)
1. a kind of automobile rear side mat structure, it is characterised in that including EPP skeletons and with reference to the PU foaming layers on EPP skeletons,
Also be embedded with the injection buckle that same vehicle body is installed in EPP skeletons, the surface of described PU foaming layers to be also formed with foaming ripe
After change from skinning cortex；
Described EPP skeletons are the dual density construction being made up of high density EPP and low-density EPP, wherein, it is upper same on EPP skeletons
The part of vehicle body laminating is the EPP skeleton high-density regions being made using high density EPP, and remainder is using low-density EPP
The EPP skeleton density regions being made.
2. a kind of automobile rear side mat structure according to claim 1, it is characterised in that described high density EPP's is close
Spend for 80-100kg/m3, low-density EPP density is 30-40kg/m3。
3. the forming method of the automobile rear side mat structure as described in claim 1 or 2 is any, it is characterised in that including following
Step：
(1) first injection buckle is embedded in EPP foaming moulds, then toward injection high density EPP and low-density EPP in die cavity,
It is stripped after steam molding, water cooling, obtains EPP skeletons；
(2) the EPP skeletons of forming are embedded in PU foaming moulds again, inject polyurethane group material, foamed, curing is formed attached
The surface formation on EPP skeletons from the PU foaming layers of skinning cortex, that is, obtains automobile rear side mat structure.
4. the forming method of automobile rear side according to claim 3 mat structure, it is characterised in that in step (1)：It is highly dense
Degree EPP and low-density EPP injection technology be：High density EPP raw materials and low-density EPP raw materials are first injected into two precompressed tanks
It is interior, after the completion of injecting compressed air precompressed, be connected on two of foaming machine material cylinders, after matched moulds, at the same high density EPP and
Low-density EPP raw materials are injected into the die cavity of EPP foaming moulds and control shaping, wherein, the forming temperature of high density EPP raw materials
Control is at 135 DEG C -145 DEG C, and steam pressure is set in 4.5bar, and the forming temperature of low-density EPP raw materials is controlled at 125 DEG C -135
DEG C, steam pressure is set in 4bar.
5. the forming method of automobile rear side according to claim 3 mat structure, it is characterised in that in step (2)：Poly- ammonia
Ester group material is made up of isocyanates group material and PPG.
6. the forming method of automobile rear side according to claim 3 mat structure, it is characterised in that in step (2)：Foaming
The concrete technology condition of curing is：The temperature on PU foaming moulds surface is 40-65 DEG C, and the curing time is 30-40s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710525151.2A CN107322861A (en) | 2017-06-30 | 2017-06-30 | A kind of automobile rear side mat structure and its forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710525151.2A CN107322861A (en) | 2017-06-30 | 2017-06-30 | A kind of automobile rear side mat structure and its forming method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107322861A true CN107322861A (en) | 2017-11-07 |
Family
ID=60198761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710525151.2A Pending CN107322861A (en) | 2017-06-30 | 2017-06-30 | A kind of automobile rear side mat structure and its forming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107322861A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515663A (en) * | 2018-04-16 | 2018-09-11 | 安吉富诺家具有限公司 | A kind of chair back filling integral molding method of the competing chair of electricity |
| CN111231201A (en) * | 2020-01-16 | 2020-06-05 | 辽宁金兴汽车内饰有限公司 | Self-skinning foaming process for automotive upholstery |
| CN111660903A (en) * | 2020-06-18 | 2020-09-15 | 安徽永锋防护科技股份有限公司 | Light sleeper of automobile and forming process thereof |
| CN114770844A (en) * | 2022-05-11 | 2022-07-22 | 广州东邦怡丰汽车配件科技有限公司 | Integrated forming process for lightweight automobile seat |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515663A (en) * | 2018-04-16 | 2018-09-11 | 安吉富诺家具有限公司 | A kind of chair back filling integral molding method of the competing chair of electricity |
| CN111231201A (en) * | 2020-01-16 | 2020-06-05 | 辽宁金兴汽车内饰有限公司 | Self-skinning foaming process for automotive upholstery |
| CN111660903A (en) * | 2020-06-18 | 2020-09-15 | 安徽永锋防护科技股份有限公司 | Light sleeper of automobile and forming process thereof |
| CN111660903B (en) * | 2020-06-18 | 2022-10-18 | 安徽永锋防护科技股份有限公司 | A lightweight sleeper for automobile and its forming process |
| CN114770844A (en) * | 2022-05-11 | 2022-07-22 | 广州东邦怡丰汽车配件科技有限公司 | Integrated forming process for lightweight automobile seat |
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Application publication date: 20171107 |
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